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vcpkg/ports/lmdb/lmdb_45a88275d2a410e683bae4ef44881e0f55fa3c4d.patch

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LMDB port
2016-12-20 09:51:53 +08:00
diff --git a/libraries/liblmdb/Makefile b/libraries/liblmdb/Makefile
index 0940c49..72d0984 100644
--- a/libraries/liblmdb/Makefile
+++ b/libraries/liblmdb/Makefile
@@ -8,7 +8,7 @@
# platforms; you should not need to change any of these.
# Read their descriptions in mdb.c if you do:
#
-# - MDB_USE_POSIX_SEM
+# - MDB_USE_POSIX_MUTEX, MDB_USE_POSIX_SEM, MDB_USE_SYSV_SEM
# - MDB_DSYNC
# - MDB_FDATASYNC
# - MDB_FDATASYNC_WORKS
@@ -24,8 +24,9 @@ W = -W -Wall -Wno-unused-parameter -Wbad-function-cast -Wuninitialized
THREADS = -pthread
OPT = -O2 -g
CFLAGS = $(THREADS) $(OPT) $(W) $(XCFLAGS)
-LDLIBS =
-SOLIBS =
+LDLIBS = # -lntdll # Windows needs ntdll
+SOLIBS = # -lntdll
+SOEXT = .so
prefix = /usr/local
exec_prefix = $(prefix)
bindir = $(exec_prefix)/bin
@@ -37,7 +38,7 @@ mandir = $(datarootdir)/man
########################################################################
IHDRS = lmdb.h
-ILIBS = liblmdb.a liblmdb.so
+ILIBS = liblmdb.a liblmdb$(SOEXT)
IPROGS = mdb_stat mdb_copy mdb_dump mdb_load
IDOCS = mdb_stat.1 mdb_copy.1 mdb_dump.1 mdb_load.1
PROGS = $(IPROGS) mtest mtest2 mtest3 mtest4 mtest5
@@ -63,7 +64,7 @@ test: all
liblmdb.a: mdb.o midl.o
$(AR) rs $@ mdb.o midl.o
-liblmdb.so: mdb.lo midl.lo
+liblmdb$(SOEXT): mdb.lo midl.lo
# $(CC) $(LDFLAGS) -pthread -shared -Wl,-Bsymbolic -o $@ mdb.o midl.o $(SOLIBS)
$(CC) $(LDFLAGS) -pthread -shared -o $@ mdb.lo midl.lo $(SOLIBS)
diff --git a/libraries/liblmdb/lmdb.h b/libraries/liblmdb/lmdb.h
index c4d05d1..30d5862 100644
--- a/libraries/liblmdb/lmdb.h
+++ b/libraries/liblmdb/lmdb.h
@@ -53,14 +53,15 @@
*
* Fix: Check for stale readers periodically, using the
* #mdb_reader_check function or the \ref mdb_stat_1 "mdb_stat" tool.
- * Stale writers will be cleared automatically on some systems:
+ * Stale writers will be cleared automatically on most systems:
* - Windows - automatic
+ * - BSD, systems using SysV semaphores - automatic
* - Linux, systems using POSIX mutexes with Robust option - automatic
- * - not on BSD, systems using POSIX semaphores.
* Otherwise just make all programs using the database close it;
* the lockfile is always reset on first open of the environment.
*
- * - On BSD systems or others configured with MDB_USE_POSIX_SEM,
+ * - On BSD systems or others configured with MDB_USE_SYSV_SEM or
+ * MDB_USE_POSIX_SEM,
* startup can fail due to semaphores owned by another userid.
*
* Fix: Open and close the database as the user which owns the
@@ -77,6 +78,11 @@
* access to locks and lock file. Exceptions: On read-only filesystems
* or with the #MDB_NOLOCK flag described under #mdb_env_open().
*
+ * - An LMDB configuration will often reserve considerable \b unused
+ * memory address space and maybe file size for future growth.
+ * This does not use actual memory or disk space, but users may need
+ * to understand the difference so they won't be scared off.
+ *
* - By default, in versions before 0.9.10, unused portions of the data
* file might receive garbage data from memory freed by other code.
* (This does not happen when using the #MDB_WRITEMAP flag.) As of
@@ -160,6 +166,8 @@
#define _LMDB_H_
#include <sys/types.h>
+#include <inttypes.h>
+#include <limits.h>
#ifdef __cplusplus
extern "C" {
@@ -172,6 +180,32 @@ typedef int mdb_mode_t;
typedef mode_t mdb_mode_t;
#endif
+#ifdef _WIN32
+# define MDB_FMT_Z "I"
+#else
+# define MDB_FMT_Z "z" /**< printf/scanf format modifier for size_t */
+#endif
+
+#ifndef MDB_VL32
+/** Unsigned type used for mapsize, entry counts and page/transaction IDs.
+ *
+ * It is normally size_t, hence the name. Defining MDB_VL32 makes it
+ * uint64_t, but do not try this unless you know what you are doing.
+ */
+typedef size_t mdb_size_t;
+# define MDB_SIZE_MAX SIZE_MAX /**< max #mdb_size_t */
+/** #mdb_size_t printf formats, \b t = one of [diouxX] without quotes */
+# define MDB_PRIy(t) MDB_FMT_Z #t
+/** #mdb_size_t scanf formats, \b t = one of [dioux] without quotes */
+# define MDB_SCNy(t) MDB_FMT_Z #t
+#else
+typedef uint64_t mdb_size_t;
+# define MDB_SIZE_MAX UINT64_MAX
+# define MDB_PRIy(t) PRI##t##64
+# define MDB_SCNy(t) SCN##t##64
+# define mdb_env_create mdb_env_create_vl32 /**< Prevent mixing with non-VL32 builds */
+#endif
+
/** An abstraction for a file handle.
* On POSIX systems file handles are small integers. On Windows
* they're opaque pointers.
@@ -194,7 +228,7 @@ typedef int mdb_filehandle_t;
/** Library minor version */
#define MDB_VERSION_MINOR 9
/** Library patch version */
-#define MDB_VERSION_PATCH 18
+#define MDB_VERSION_PATCH 70
/** Combine args a,b,c into a single integer for easy version comparisons */
#define MDB_VERINT(a,b,c) (((a) << 24) | ((b) << 16) | (c))
@@ -204,7 +238,7 @@ typedef int mdb_filehandle_t;
MDB_VERINT(MDB_VERSION_MAJOR,MDB_VERSION_MINOR,MDB_VERSION_PATCH)
/** The release date of this library version */
-#define MDB_VERSION_DATE "February 5, 2016"
+#define MDB_VERSION_DATE "December 19, 2015"
/** A stringifier for the version info */
#define MDB_VERSTR(a,b,c,d) "LMDB " #a "." #b "." #c ": (" d ")"
@@ -306,7 +340,8 @@ typedef void (MDB_rel_func)(MDB_val *item, void *oldptr, void *newptr, void *rel
#define MDB_REVERSEKEY 0x02
/** use sorted duplicates */
#define MDB_DUPSORT 0x04
- /** numeric keys in native byte order: either unsigned int or size_t.
+ /** numeric keys in native byte order, either unsigned int or #mdb_size_t.
+ * (lmdb expects 32-bit int <= size_t <= 32/64-bit mdb_size_t.)
* The keys must all be of the same size. */
#define MDB_INTEGERKEY 0x08
/** with #MDB_DUPSORT, sorted dup items have fixed size */
@@ -383,7 +418,9 @@ typedef enum MDB_cursor_op {
MDB_PREV_NODUP, /**< Position at last data item of previous key */
MDB_SET, /**< Position at specified key */
MDB_SET_KEY, /**< Position at specified key, return key + data */
- MDB_SET_RANGE /**< Position at first key greater than or equal to specified key. */
+ MDB_SET_RANGE, /**< Position at first key greater than or equal to specified key. */
+ MDB_PREV_MULTIPLE /**< Position at previous page and return key and up to
+ a page of duplicate data items. Only for #MDB_DUPFIXED */
} MDB_cursor_op;
/** @defgroup errors Return Codes
@@ -440,8 +477,10 @@ typedef enum MDB_cursor_op {
#define MDB_BAD_VALSIZE (-30781)
/** The specified DBI was changed unexpectedly */
#define MDB_BAD_DBI (-30780)
+ /** Unexpected problem - txn should abort */
+#define MDB_PROBLEM (-30779)
/** The last defined error code */
-#define MDB_LAST_ERRCODE MDB_BAD_DBI
+#define MDB_LAST_ERRCODE MDB_PROBLEM
/** @} */
/** @brief Statistics for a database in the environment */
@@ -449,18 +488,18 @@ typedef struct MDB_stat {
unsigned int ms_psize; /**< Size of a database page.
This is currently the same for all databases. */
unsigned int ms_depth; /**< Depth (height) of the B-tree */
- size_t ms_branch_pages; /**< Number of internal (non-leaf) pages */
- size_t ms_leaf_pages; /**< Number of leaf pages */
- size_t ms_overflow_pages; /**< Number of overflow pages */
- size_t ms_entries; /**< Number of data items */
+ mdb_size_t ms_branch_pages; /**< Number of internal (non-leaf) pages */
+ mdb_size_t ms_leaf_pages; /**< Number of leaf pages */
+ mdb_size_t ms_overflow_pages; /**< Number of overflow pages */
+ mdb_size_t ms_entries; /**< Number of data items */
} MDB_stat;
/** @brief Information about the environment */
typedef struct MDB_envinfo {
void *me_mapaddr; /**< Address of map, if fixed */
- size_t me_mapsize; /**< Size of the data memory map */
- size_t me_last_pgno; /**< ID of the last used page */
- size_t me_last_txnid; /**< ID of the last committed transaction */
+ mdb_size_t me_mapsize; /**< Size of the data memory map */
+ mdb_size_t me_last_pgno; /**< ID of the last used page */
+ mdb_size_t me_last_txnid; /**< ID of the last committed transaction */
unsigned int me_maxreaders; /**< max reader slots in the environment */
unsigned int me_numreaders; /**< max reader slots used in the environment */
} MDB_envinfo;
@@ -672,6 +711,7 @@ int mdb_env_copyfd(MDB_env *env, mdb_filehandle_t fd);
* <li>#MDB_CP_COMPACT - Perform compaction while copying: omit free
* pages and sequentially renumber all pages in output. This option
* consumes more CPU and runs more slowly than the default.
+ * Currently it fails if the environment has suffered a page leak.
* </ul>
* @return A non-zero error value on failure and 0 on success.
*/
@@ -829,7 +869,7 @@ int mdb_env_get_fd(MDB_env *env, mdb_filehandle_t *fd);
* an active write transaction.
* </ul>
*/
-int mdb_env_set_mapsize(MDB_env *env, size_t size);
+int mdb_env_set_mapsize(MDB_env *env, mdb_size_t size);
/** @brief Set the maximum number of threads/reader slots for the environment.
*
@@ -942,6 +982,10 @@ int mdb_env_set_assert(MDB_env *env, MDB_assert_func *func);
* <ul>
* <li>#MDB_RDONLY
* This transaction will not perform any write operations.
+ * <li>#MDB_NOSYNC
+ * Don't flush system buffers to disk when committing this transaction.
+ * <li>#MDB_NOMETASYNC
+ * Flush system buffers but omit metadata flush when committing this transaction.
* </ul>
* @param[out] txn Address where the new #MDB_txn handle will be stored
* @return A non-zero error value on failure and 0 on success. Some possible
@@ -974,7 +1018,7 @@ MDB_env *mdb_txn_env(MDB_txn *txn);
* @param[in] txn A transaction handle returned by #mdb_txn_begin()
* @return A transaction ID, valid if input is an active transaction.
*/
-size_t mdb_txn_id(MDB_txn *txn);
+mdb_size_t mdb_txn_id(MDB_txn *txn);
/** @brief Commit all the operations of a transaction into the database.
*
@@ -1084,7 +1128,8 @@ int mdb_txn_renew(MDB_txn *txn);
* keys must be unique and may have only a single data item.
* <li>#MDB_INTEGERKEY
* Keys are binary integers in native byte order, either unsigned int
- * or size_t, and will be sorted as such.
+ * or #mdb_size_t, and will be sorted as such.
+ * (lmdb expects 32-bit int <= size_t <= 32/64-bit mdb_size_t.)
* The keys must all be of the same size.
* <li>#MDB_DUPFIXED
* This flag may only be used in combination with #MDB_DUPSORT. This option
@@ -1524,7 +1569,7 @@ int mdb_cursor_del(MDB_cursor *cursor, unsigned int flags);
* <li>EINVAL - cursor is not initialized, or an invalid parameter was specified.
* </ul>
*/
-int mdb_cursor_count(MDB_cursor *cursor, size_t *countp);
+int mdb_cursor_count(MDB_cursor *cursor, mdb_size_t *countp);
/** @brief Compare two data items according to a particular database.
*
diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index d2e81e4..0110402 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -35,9 +35,42 @@
#ifndef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
+#if defined(MDB_VL32) || defined(__WIN64__)
+#define _FILE_OFFSET_BITS 64
+#endif
#ifdef _WIN32
#include <malloc.h>
#include <windows.h>
+
+/* We use native NT APIs to setup the memory map, so that we can
+ * let the DB file grow incrementally instead of always preallocating
+ * the full size. These APIs are defined in <wdm.h> and <ntifs.h>
+ * but those headers are meant for driver-level development and
+ * conflict with the regular user-level headers, so we explicitly
+ * declare them here. Using these APIs also means we must link to
+ * ntdll.dll, which is not linked by default in user code.
+ */
+NTSTATUS WINAPI
+NtCreateSection(OUT PHANDLE sh, IN ACCESS_MASK acc,
+ IN void * oa OPTIONAL,
+ IN PLARGE_INTEGER ms OPTIONAL,
+ IN ULONG pp, IN ULONG aa, IN HANDLE fh OPTIONAL);
+
+typedef enum _SECTION_INHERIT {
+ ViewShare = 1,
+ ViewUnmap = 2
+} SECTION_INHERIT;
+
+NTSTATUS WINAPI
+NtMapViewOfSection(IN PHANDLE sh, IN HANDLE ph,
+ IN OUT PVOID *addr, IN ULONG_PTR zbits,
+ IN SIZE_T cs, IN OUT PLARGE_INTEGER off OPTIONAL,
+ IN OUT PSIZE_T vs, IN SECTION_INHERIT ih,
+ IN ULONG at, IN ULONG pp);
+
+NTSTATUS WINAPI
+NtClose(HANDLE h);
+
/** getpid() returns int; MinGW defines pid_t but MinGW64 typedefs it
* as int64 which is wrong. MSVC doesn't define it at all, so just
* don't use it.
@@ -116,7 +149,9 @@ typedef SSIZE_T ssize_t;
#endif
#if defined(__APPLE__) || defined (BSD)
-# define MDB_USE_POSIX_SEM 1
+# if !(defined(MDB_USE_POSIX_MUTEX) || defined(MDB_USE_POSIX_SEM))
+# define MDB_USE_SYSV_SEM 1
+# endif
# define MDB_FDATASYNC fsync
#elif defined(ANDROID)
# define MDB_FDATASYNC fsync
@@ -127,12 +162,22 @@ typedef SSIZE_T ssize_t;
#ifdef MDB_USE_POSIX_SEM
# define MDB_USE_HASH 1
#include <semaphore.h>
+#elif defined(MDB_USE_SYSV_SEM)
+#include <sys/ipc.h>
+#include <sys/sem.h>
+#ifdef _SEM_SEMUN_UNDEFINED
+union semun {
+ int val;
+ struct semid_ds *buf;
+ unsigned short *array;
+};
+#endif /* _SEM_SEMUN_UNDEFINED */
#else
#define MDB_USE_POSIX_MUTEX 1
-#endif
-#endif
+#endif /* MDB_USE_POSIX_SEM */
+#endif /* !_WIN32 */
-#if defined(_WIN32) + defined(MDB_USE_POSIX_SEM) \
+#if defined(_WIN32) + defined(MDB_USE_POSIX_SEM) + defined(MDB_USE_SYSV_SEM) \
+ defined(MDB_USE_POSIX_MUTEX) != 1
# error "Ambiguous shared-lock implementation"
#endif
@@ -183,7 +228,7 @@ typedef SSIZE_T ssize_t;
#if (BYTE_ORDER == LITTLE_ENDIAN) == (BYTE_ORDER == BIG_ENDIAN)
# error "Unknown or unsupported endianness (BYTE_ORDER)"
-#elif (-6 & 5) || CHAR_BIT != 8 || UINT_MAX < 0xffffffff || ULONG_MAX % 0xFFFF
+#elif (-6 & 5) || CHAR_BIT!=8 || UINT_MAX!=0xffffffff || MDB_SIZE_MAX%UINT_MAX
# error "Two's complement, reasonably sized integer types, please"
#endif
@@ -234,6 +279,8 @@ typedef SSIZE_T ssize_t;
#define MDB_NO_ROOT (MDB_LAST_ERRCODE + 10)
#ifdef _WIN32
#define MDB_OWNERDEAD ((int) WAIT_ABANDONED)
+#elif defined MDB_USE_SYSV_SEM
+#define MDB_OWNERDEAD (MDB_LAST_ERRCODE + 11)
#elif defined(MDB_USE_POSIX_MUTEX) && defined(EOWNERDEAD)
#define MDB_OWNERDEAD EOWNERDEAD /**< #LOCK_MUTEX0() result if dead owner */
#endif
@@ -256,16 +303,20 @@ typedef SSIZE_T ssize_t;
# define MDB_USE_ROBUST 0
# else
# define MDB_USE_ROBUST 1
+# endif
+#endif /* !MDB_USE_ROBUST */
+
+#if defined(MDB_USE_POSIX_MUTEX) && (MDB_USE_ROBUST)
/* glibc < 2.12 only provided _np API */
-# if defined(__GLIBC__) && GLIBC_VER < 0x02000c
+# if (defined(__GLIBC__) && GLIBC_VER < 0x02000c) || \
+ (defined(PTHREAD_MUTEX_ROBUST_NP) && !defined(PTHREAD_MUTEX_ROBUST))
# define PTHREAD_MUTEX_ROBUST PTHREAD_MUTEX_ROBUST_NP
# define pthread_mutexattr_setrobust(attr, flag) pthread_mutexattr_setrobust_np(attr, flag)
# define pthread_mutex_consistent(mutex) pthread_mutex_consistent_np(mutex)
# endif
-# endif
-#endif /* MDB_USE_ROBUST */
+#endif /* MDB_USE_POSIX_MUTEX && MDB_USE_ROBUST */
-#if defined(MDB_OWNERDEAD) && MDB_USE_ROBUST
+#if defined(MDB_OWNERDEAD) && (MDB_USE_ROBUST)
#define MDB_ROBUST_SUPPORTED 1
#endif
@@ -288,8 +339,10 @@ typedef HANDLE mdb_mutex_t, mdb_mutexref_t;
#define pthread_mutex_lock(x) WaitForSingleObject(*x, INFINITE)
#define pthread_cond_signal(x) SetEvent(*x)
#define pthread_cond_wait(cond,mutex) do{SignalObjectAndWait(*mutex, *cond, INFINITE, FALSE); WaitForSingleObject(*mutex, INFINITE);}while(0)
-#define THREAD_CREATE(thr,start,arg) thr=CreateThread(NULL,0,start,arg,0,NULL)
-#define THREAD_FINISH(thr) WaitForSingleObject(thr, INFINITE)
+#define THREAD_CREATE(thr,start,arg) \
+ (((thr) = CreateThread(NULL, 0, start, arg, 0, NULL)) ? 0 : ErrCode())
+#define THREAD_FINISH(thr) \
+ (WaitForSingleObject(thr, INFINITE) ? ErrCode() : 0)
#define LOCK_MUTEX0(mutex) WaitForSingleObject(mutex, INFINITE)
#define UNLOCK_MUTEX(mutex) ReleaseMutex(mutex)
#define mdb_mutex_consistent(mutex) 0
@@ -305,12 +358,10 @@ typedef HANDLE mdb_mutex_t, mdb_mutexref_t;
#else
#define MDB_PROCESS_QUERY_LIMITED_INFORMATION 0x1000
#endif
-#define Z "I"
#else
#define THREAD_RET void *
#define THREAD_CREATE(thr,start,arg) pthread_create(&thr,NULL,start,arg)
#define THREAD_FINISH(thr) pthread_join(thr,NULL)
-#define Z "z" /**< printf format modifier for size_t */
/** For MDB_LOCK_FORMAT: True if readers take a pid lock in the lockfile */
#define MDB_PIDLOCK 1
@@ -329,12 +380,46 @@ mdb_sem_wait(sem_t *sem)
return rc;
}
+#elif defined MDB_USE_SYSV_SEM
+
+typedef struct mdb_mutex {
+ int semid;
+ int semnum;
+ int *locked;
+} mdb_mutex_t[1], *mdb_mutexref_t;
+
+#define LOCK_MUTEX0(mutex) mdb_sem_wait(mutex)
+#define UNLOCK_MUTEX(mutex) do { \
+ struct sembuf sb = { 0, 1, SEM_UNDO }; \
+ sb.sem_num = (mutex)->semnum; \
+ *(mutex)->locked = 0; \
+ semop((mutex)->semid, &sb, 1); \
+} while(0)
+
+static int
+mdb_sem_wait(mdb_mutexref_t sem)
+{
+ int rc, *locked = sem->locked;
+ struct sembuf sb = { 0, -1, SEM_UNDO };
+ sb.sem_num = sem->semnum;
+ do {
+ if (!semop(sem->semid, &sb, 1)) {
+ rc = *locked ? MDB_OWNERDEAD : MDB_SUCCESS;
+ *locked = 1;
+ break;
+ }
+ } while ((rc = errno) == EINTR);
+ return rc;
+}
+
+#define mdb_mutex_consistent(mutex) 0
+
#else /* MDB_USE_POSIX_MUTEX: */
/** Shared mutex/semaphore as it is stored (mdb_mutex_t), and as
* local variables keep it (mdb_mutexref_t).
*
- * When #mdb_mutexref_t is a pointer declaration and #mdb_mutex_t is
- * not, then it is array[size 1] so it can be assigned to a pointer.
+ * An mdb_mutex_t can be assigned to an mdb_mutexref_t. They can
+ * be the same, or an array[size 1] and a pointer.
* @{
*/
typedef pthread_mutex_t mdb_mutex_t[1], *mdb_mutexref_t;
@@ -349,7 +434,7 @@ typedef pthread_mutex_t mdb_mutex_t[1], *mdb_mutexref_t;
/** Mark mutex-protected data as repaired, after death of previous owner.
*/
#define mdb_mutex_consistent(mutex) pthread_mutex_consistent(mutex)
-#endif /* MDB_USE_POSIX_SEM */
+#endif /* MDB_USE_POSIX_SEM || MDB_USE_SYSV_SEM */
/** Get the error code for the last failed system function.
*/
@@ -374,12 +459,24 @@ typedef pthread_mutex_t mdb_mutex_t[1], *mdb_mutexref_t;
#define GET_PAGESIZE(x) ((x) = sysconf(_SC_PAGE_SIZE))
#endif
+#define Z MDB_FMT_Z /**< printf/scanf format modifier for size_t */
+#define Yu MDB_PRIy(u) /**< printf format for #mdb_size_t */
+#define Yd MDB_PRIy(d) /**< printf format for "signed #mdb_size_t" */
+
#if defined(_WIN32) || defined(MDB_USE_POSIX_SEM)
#define MNAME_LEN 32
+#elif defined(MDB_USE_SYSV_SEM)
+#define MNAME_LEN (sizeof(int))
#else
#define MNAME_LEN (sizeof(pthread_mutex_t))
#endif
+#ifdef MDB_USE_SYSV_SEM
+#define SYSV_SEM_FLAG 1 /**< SysV sems in lockfile format */
+#else
+#define SYSV_SEM_FLAG 0
+#endif
+
/** @} */
#ifdef MDB_ROBUST_SUPPORTED
@@ -521,7 +618,7 @@ static txnid_t mdb_debug_start;
/** The version number for a database's datafile format. */
#define MDB_DATA_VERSION ((MDB_DEVEL) ? 999 : 1)
/** The version number for a database's lockfile format. */
-#define MDB_LOCK_VERSION 1
+#define MDB_LOCK_VERSION ((MDB_DEVEL) ? 999 : 1)
/** @brief The max size of a key we can write, or 0 for computed max.
*
@@ -712,6 +809,9 @@ typedef struct MDB_txbody {
uint32_t mtb_format;
#if defined(_WIN32) || defined(MDB_USE_POSIX_SEM)
char mtb_rmname[MNAME_LEN];
+#elif defined(MDB_USE_SYSV_SEM)
+ int mtb_semid;
+ int mtb_rlocked;
#else
/** Mutex protecting access to this table.
* This is the reader table lock used with LOCK_MUTEX().
@@ -740,12 +840,19 @@ typedef struct MDB_txninfo {
#define mti_rmname mt1.mtb.mtb_rmname
#define mti_txnid mt1.mtb.mtb_txnid
#define mti_numreaders mt1.mtb.mtb_numreaders
+#ifdef MDB_USE_SYSV_SEM
+#define mti_semid mt1.mtb.mtb_semid
+#define mti_rlocked mt1.mtb.mtb_rlocked
+#endif
char pad[(sizeof(MDB_txbody)+CACHELINE-1) & ~(CACHELINE-1)];
} mt1;
union {
#if defined(_WIN32) || defined(MDB_USE_POSIX_SEM)
char mt2_wmname[MNAME_LEN];
#define mti_wmname mt2.mt2_wmname
+#elif defined MDB_USE_SYSV_SEM
+ int mt2_wlocked;
+#define mti_wlocked mt2.mt2_wlocked
#else
mdb_mutex_t mt2_wmutex;
#define mti_wmutex mt2.mt2_wmutex
@@ -760,12 +867,27 @@ typedef struct MDB_txninfo {
((uint32_t) \
((MDB_LOCK_VERSION) \
/* Flags which describe functionality */ \
+ + (SYSV_SEM_FLAG << 18) \
+ (((MDB_PIDLOCK) != 0) << 16)))
/** @} */
-/** Common header for all page types.
- * Overflow records occupy a number of contiguous pages with no
- * headers on any page after the first.
+/** Common header for all page types. The page type depends on #mp_flags.
+ *
+ * #P_BRANCH and #P_LEAF pages have unsorted '#MDB_node's at the end, with
+ * sorted #mp_ptrs[] entries referring to them. Exception: #P_LEAF2 pages
+ * omit mp_ptrs and pack sorted #MDB_DUPFIXED values after the page header.
+ *
+ * #P_OVERFLOW records occupy one or more contiguous pages where only the
+ * first has a page header. They hold the real data of #F_BIGDATA nodes.
+ *
+ * #P_SUBP sub-pages are small leaf "pages" with duplicate data.
+ * A node with flag #F_DUPDATA but not #F_SUBDATA contains a sub-page.
+ * (Duplicate data can also go in sub-databases, which use normal pages.)
+ *
+ * #P_META pages contain #MDB_meta, the start point of an LMDB snapshot.
+ *
+ * Each non-metapage up to #MDB_meta.%mm_last_pg is reachable exactly once
+ * in the snapshot: Either used by a database or listed in a freeDB record.
*/
typedef struct MDB_page {
#define mp_pgno mp_p.p_pgno
@@ -774,7 +896,7 @@ typedef struct MDB_page {
pgno_t p_pgno; /**< page number */
struct MDB_page *p_next; /**< for in-memory list of freed pages */
} mp_p;
- uint16_t mp_pad;
+ uint16_t mp_pad; /**< key size if this is a LEAF2 page */
/** @defgroup mdb_page Page Flags
* @ingroup internal
* Flags for the page headers.
@@ -841,7 +963,9 @@ typedef struct MDB_page {
/** The number of overflow pages needed to store the given size. */
#define OVPAGES(size, psize) ((PAGEHDRSZ-1 + (size)) / (psize) + 1)
- /** Link in #MDB_txn.%mt_loose_pgs list */
+ /** Link in #MDB_txn.%mt_loose_pgs list.
+ * Kept outside the page header, which is needed when reusing the page.
+ */
#define NEXT_LOOSE_PAGE(p) (*(MDB_page **)((p) + 2))
/** Header for a single key/data pair within a page.
@@ -924,7 +1048,7 @@ typedef struct MDB_node {
#ifdef MISALIGNED_OK
#define COPY_PGNO(dst,src) dst = src
#else
-#if SIZE_MAX > 4294967295UL
+#if MDB_SIZE_MAX > 0xffffffffU
#define COPY_PGNO(dst,src) do { \
unsigned short *s, *d; \
s = (unsigned short *)&(src); \
@@ -965,13 +1089,13 @@ typedef struct MDB_db {
pgno_t md_branch_pages; /**< number of internal pages */
pgno_t md_leaf_pages; /**< number of leaf pages */
pgno_t md_overflow_pages; /**< number of overflow pages */
- size_t md_entries; /**< number of data items */
+ mdb_size_t md_entries; /**< number of data items */
pgno_t md_root; /**< the root page of this tree */
} MDB_db;
- /** mdb_dbi_open flags */
#define MDB_VALID 0x8000 /**< DB handle is valid, for me_dbflags */
#define PERSISTENT_FLAGS (0xffff & ~(MDB_VALID))
+ /** #mdb_dbi_open() flags */
#define VALID_FLAGS (MDB_REVERSEKEY|MDB_DUPSORT|MDB_INTEGERKEY|MDB_DUPFIXED|\
MDB_INTEGERDUP|MDB_REVERSEDUP|MDB_CREATE)
@@ -995,14 +1119,25 @@ typedef struct MDB_meta {
uint32_t mm_magic;
/** Version number of this file. Must be set to #MDB_DATA_VERSION. */
uint32_t mm_version;
+#ifdef MDB_VL32
+ union { /* always zero since we don't support fixed mapping in MDB_VL32 */
+ MDB_ID mmun_ull;
+ void *mmun_address;
+ } mm_un;
+#define mm_address mm_un.mmun_address
+#else
void *mm_address; /**< address for fixed mapping */
- size_t mm_mapsize; /**< size of mmap region */
+#endif
+ pgno_t mm_mapsize; /**< size of mmap region */
MDB_db mm_dbs[CORE_DBS]; /**< first is free space, 2nd is main db */
/** The size of pages used in this DB */
#define mm_psize mm_dbs[FREE_DBI].md_pad
/** Any persistent environment flags. @ref mdb_env */
#define mm_flags mm_dbs[FREE_DBI].md_flags
- pgno_t mm_last_pg; /**< last used page in file */
+ /** Last used page in the datafile.
+ * Actually the file may be shorter if the freeDB lists the final pages.
+ */
+ pgno_t mm_last_pg;
volatile txnid_t mm_txnid; /**< txnid that committed this page */
} MDB_meta;
@@ -1039,6 +1174,9 @@ struct MDB_txn {
/** Nested txn under this txn, set together with flag #MDB_TXN_HAS_CHILD */
MDB_txn *mt_child;
pgno_t mt_next_pgno; /**< next unallocated page */
+#ifdef MDB_VL32
+ pgno_t mt_last_pgno; /**< last written page */
+#endif
/** The ID of this transaction. IDs are integers incrementing from 1.
* Only committed write transactions increment the ID. If a transaction
* aborts, the ID may be re-used by the next writer.
@@ -1052,7 +1190,7 @@ struct MDB_txn {
* in this transaction, linked through #NEXT_LOOSE_PAGE(page).
*/
MDB_page *mt_loose_pgs;
- /* #Number of loose pages (#mt_loose_pgs) */
+ /** Number of loose pages (#mt_loose_pgs) */
int mt_loose_count;
/** The sorted list of dirty pages we temporarily wrote to disk
* because the dirty list was full. page numbers in here are
@@ -1085,6 +1223,19 @@ struct MDB_txn {
MDB_cursor **mt_cursors;
/** Array of flags for each DB */
unsigned char *mt_dbflags;
+#ifdef MDB_VL32
+ /** List of read-only pages (actually chunks) */
+ MDB_ID3L mt_rpages;
+ /** We map chunks of 16 pages. Even though Windows uses 4KB pages, all
+ * mappings must begin on 64KB boundaries. So we round off all pgnos to
+ * a chunk boundary. We do the same on Linux for symmetry, and also to
+ * reduce the frequency of mmap/munmap calls.
+ */
+#define MDB_RPAGE_CHUNK 16
+#define MDB_TRPAGE_SIZE 4096 /**< size of #mt_rpages array of chunks */
+#define MDB_TRPAGE_MAX (MDB_TRPAGE_SIZE-1) /**< maximum chunk index */
+ unsigned int mt_rpcheck; /**< threshold for reclaiming unref'd chunks */
+#endif
/** Number of DB records in use, or 0 when the txn is finished.
* This number only ever increments until the txn finishes; we
* don't decrement it when individual DB handles are closed.
@@ -1096,7 +1247,9 @@ struct MDB_txn {
* @{
*/
/** #mdb_txn_begin() flags */
-#define MDB_TXN_BEGIN_FLAGS MDB_RDONLY
+#define MDB_TXN_BEGIN_FLAGS (MDB_NOMETASYNC|MDB_NOSYNC|MDB_RDONLY)
+#define MDB_TXN_NOMETASYNC MDB_NOMETASYNC /**< don't sync meta for this txn on commit */
+#define MDB_TXN_NOSYNC MDB_NOSYNC /**< don't sync this txn on commit */
#define MDB_TXN_RDONLY MDB_RDONLY /**< read-only transaction */
/* internal txn flags */
#define MDB_TXN_WRITEMAP MDB_WRITEMAP /**< copy of #MDB_env flag in writers */
@@ -1162,10 +1315,24 @@ struct MDB_cursor {
#define C_SUB 0x04 /**< Cursor is a sub-cursor */
#define C_DEL 0x08 /**< last op was a cursor_del */
#define C_UNTRACK 0x40 /**< Un-track cursor when closing */
+#define C_WRITEMAP MDB_TXN_WRITEMAP /**< Copy of txn flag */
+/** Read-only cursor into the txn's original snapshot in the map.
+ * Set for read-only txns, and in #mdb_page_alloc() for #FREE_DBI when
+ * #MDB_DEVEL & 2. Only implements code which is necessary for this.
+ */
+#define C_ORIG_RDONLY MDB_TXN_RDONLY
/** @} */
unsigned int mc_flags; /**< @ref mdb_cursor */
MDB_page *mc_pg[CURSOR_STACK]; /**< stack of pushed pages */
indx_t mc_ki[CURSOR_STACK]; /**< stack of page indices */
+#ifdef MDB_VL32
+ MDB_page *mc_ovpg; /**< a referenced overflow page */
+# define MC_OVPG(mc) ((mc)->mc_ovpg)
+# define MC_SET_OVPG(mc, pg) ((mc)->mc_ovpg = (pg))
+#else
+# define MC_OVPG(mc) ((MDB_page *)0)
+# define MC_SET_OVPG(mc, pg) ((void)0)
+#endif
};
/** Context for sorted-dup records.
@@ -1195,6 +1362,9 @@ struct MDB_env {
HANDLE me_fd; /**< The main data file */
HANDLE me_lfd; /**< The lock file */
HANDLE me_mfd; /**< just for writing the meta pages */
+#if defined(MDB_VL32) && defined(_WIN32)
+ HANDLE me_fmh; /**< File Mapping handle */
+#endif
/** Failed to update the meta page. Probably an I/O error. */
#define MDB_FATAL_ERROR 0x80000000U
/** Some fields are initialized. */
@@ -1219,7 +1389,7 @@ struct MDB_env {
void *me_pbuf; /**< scratch area for DUPSORT put() */
MDB_txn *me_txn; /**< current write transaction */
MDB_txn *me_txn0; /**< prealloc'd write transaction */
- size_t me_mapsize; /**< size of the data memory map */
+ mdb_size_t me_mapsize; /**< size of the data memory map */
off_t me_size; /**< current file size */
pgno_t me_maxpg; /**< me_mapsize / me_psize */
MDB_dbx *me_dbxs; /**< array of static DB info */
@@ -1253,6 +1423,13 @@ struct MDB_env {
mdb_mutex_t me_rmutex;
mdb_mutex_t me_wmutex;
#endif
+#ifdef MDB_VL32
+ MDB_ID3L me_rpages; /**< like #mt_rpages, but global to env */
+ pthread_mutex_t me_rpmutex; /**< control access to #me_rpages */
+#define MDB_ERPAGE_SIZE 16384
+#define MDB_ERPAGE_MAX (MDB_ERPAGE_SIZE-1)
+ unsigned int me_rpcheck;
+#endif
void *me_userctx; /**< User-settable context */
MDB_assert_func *me_assert_func; /**< Callback for assertion failures */
};
@@ -1298,7 +1475,7 @@ enum {
#define MDB_END_SLOT MDB_NOTLS /**< release any reader slot if #MDB_NOTLS */
static void mdb_txn_end(MDB_txn *txn, unsigned mode);
-static int mdb_page_get(MDB_txn *txn, pgno_t pgno, MDB_page **mp, int *lvl);
+static int mdb_page_get(MDB_cursor *mc, pgno_t pgno, MDB_page **mp, int *lvl);
static int mdb_page_search_root(MDB_cursor *mc,
MDB_val *key, int modify);
#define MDB_PS_MODIFY 1
@@ -1327,7 +1504,7 @@ static int mdb_node_add(MDB_cursor *mc, indx_t indx,
static void mdb_node_del(MDB_cursor *mc, int ksize);
static void mdb_node_shrink(MDB_page *mp, indx_t indx);
static int mdb_node_move(MDB_cursor *csrc, MDB_cursor *cdst, int fromleft);
-static int mdb_node_read(MDB_txn *txn, MDB_node *leaf, MDB_val *data);
+static int mdb_node_read(MDB_cursor *mc, MDB_node *leaf, MDB_val *data);
static size_t mdb_leaf_size(MDB_env *env, MDB_val *key, MDB_val *data);
static size_t mdb_branch_size(MDB_env *env, MDB_val *key);
@@ -1360,13 +1537,18 @@ static int mdb_reader_check0(MDB_env *env, int rlocked, int *dead);
static MDB_cmp_func mdb_cmp_memn, mdb_cmp_memnr, mdb_cmp_int, mdb_cmp_cint, mdb_cmp_long;
/** @endcond */
-/** Compare two items pointing at size_t's of unknown alignment. */
+/** Compare two items pointing at '#mdb_size_t's of unknown alignment. */
#ifdef MISALIGNED_OK
# define mdb_cmp_clong mdb_cmp_long
#else
# define mdb_cmp_clong mdb_cmp_cint
#endif
+/** True if we need #mdb_cmp_clong() instead of \b cmp for #MDB_INTEGERDUP */
+#define NEED_CMP_CLONG(cmp, ksize) \
+ (UINT_MAX < MDB_SIZE_MAX && \
+ (cmp) == mdb_cmp_int && (ksize) == sizeof(mdb_size_t))
+
#ifdef _WIN32
static SECURITY_DESCRIPTOR mdb_null_sd;
static SECURITY_ATTRIBUTES mdb_all_sa;
@@ -1407,6 +1589,7 @@ static char *const mdb_errstr[] = {
"MDB_BAD_TXN: Transaction must abort, has a child, or is invalid",
"MDB_BAD_VALSIZE: Unsupported size of key/DB name/data, or wrong DUPFIXED size",
"MDB_BAD_DBI: The specified DBI handle was closed/changed unexpectedly",
+ "MDB_PROBLEM: Unexpected problem - txn should abort",
};
char *
@@ -1417,8 +1600,9 @@ mdb_strerror(int err)
* This works as long as no function between the call to mdb_strerror
* and the actual use of the message uses more than 4K of stack.
*/
- char pad[4096];
- char buf[1024], *ptr = buf;
+#define MSGSIZE 1024
+#define PADSIZE 4096
+ char buf[MSGSIZE+PADSIZE], *ptr = buf;
#endif
int i;
if (!err)
@@ -1450,7 +1634,7 @@ mdb_strerror(int err)
buf[0] = 0;
FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
- NULL, err, 0, ptr, sizeof(buf), (va_list *)pad);
+ NULL, err, 0, ptr, MSGSIZE, (va_list *)buf+MSGSIZE);
return ptr;
#else
return strerror(err);
@@ -1550,20 +1734,20 @@ mdb_page_list(MDB_page *mp)
case P_LEAF|P_LEAF2: type = "LEAF2 page"; break;
case P_LEAF|P_LEAF2|P_SUBP: type = "LEAF2 sub-page"; break;
case P_OVERFLOW:
- fprintf(stderr, "Overflow page %"Z"u pages %u%s\n",
+ fprintf(stderr, "Overflow page %"Yu" pages %u%s\n",
pgno, mp->mp_pages, state);
return;
case P_META:
- fprintf(stderr, "Meta-page %"Z"u txnid %"Z"u\n",
+ fprintf(stderr, "Meta-page %"Yu" txnid %"Yu"\n",
pgno, ((MDB_meta *)METADATA(mp))->mm_txnid);
return;
default:
- fprintf(stderr, "Bad page %"Z"u flags 0x%u\n", pgno, mp->mp_flags);
+ fprintf(stderr, "Bad page %"Yu" flags 0x%X\n", pgno, mp->mp_flags);
return;
}
nkeys = NUMKEYS(mp);
- fprintf(stderr, "%s %"Z"u numkeys %d%s\n", type, pgno, nkeys, state);
+ fprintf(stderr, "%s %"Yu" numkeys %d%s\n", type, pgno, nkeys, state);
for (i=0; i<nkeys; i++) {
if (IS_LEAF2(mp)) { /* LEAF2 pages have no mp_ptrs[] or node headers */
@@ -1578,7 +1762,7 @@ mdb_page_list(MDB_page *mp)
key.mv_data = node->mn_data;
nsize = NODESIZE + key.mv_size;
if (IS_BRANCH(mp)) {
- fprintf(stderr, "key %d: page %"Z"u, %s\n", i, NODEPGNO(node),
+ fprintf(stderr, "key %d: page %"Yu", %s\n", i, NODEPGNO(node),
DKEY(&key));
total += nsize;
} else {
@@ -1674,7 +1858,7 @@ static void mdb_audit(MDB_txn *txn)
}
}
if (freecount + count + NUM_METAS != txn->mt_next_pgno) {
- fprintf(stderr, "audit: %lu freecount: %lu count: %lu total: %lu next_pgno: %lu\n",
+ fprintf(stderr, "audit: %"Yu" freecount: %"Yu" count: %"Yu" total: %"Yu" next_pgno: %"Yu"\n",
txn->mt_txnid, freecount, count+NUM_METAS,
freecount+count+NUM_METAS, txn->mt_next_pgno);
}
@@ -1691,10 +1875,8 @@ int
mdb_dcmp(MDB_txn *txn, MDB_dbi dbi, const MDB_val *a, const MDB_val *b)
{
MDB_cmp_func *dcmp = txn->mt_dbxs[dbi].md_dcmp;
-#if UINT_MAX < SIZE_MAX
- if (dcmp == mdb_cmp_int && a->mv_size == sizeof(size_t))
+ if (NEED_CMP_CLONG(dcmp, a->mv_size))
dcmp = mdb_cmp_clong;
-#endif
return dcmp(a, b);
}
@@ -1774,6 +1956,51 @@ mdb_dlist_free(MDB_txn *txn)
dl[0].mid = 0;
}
+#ifdef MDB_VL32
+static void
+mdb_page_unref(MDB_txn *txn, MDB_page *mp)
+{
+ pgno_t pgno;
+ MDB_ID3L tl = txn->mt_rpages;
+ unsigned x, rem;
+ if (mp->mp_flags & (P_SUBP|P_DIRTY))
+ return;
+ rem = mp->mp_pgno & (MDB_RPAGE_CHUNK-1);
+ pgno = mp->mp_pgno ^ rem;
+ x = mdb_mid3l_search(tl, pgno);
+ if (x != tl[0].mid && tl[x+1].mid == mp->mp_pgno)
+ x++;
+ if (tl[x].mref)
+ tl[x].mref--;
+}
+#define MDB_PAGE_UNREF(txn, mp) mdb_page_unref(txn, mp)
+
+static void
+mdb_cursor_unref(MDB_cursor *mc)
+{
+ int i;
+ if (!mc->mc_snum || !mc->mc_pg[0] || IS_SUBP(mc->mc_pg[0]))
+ return;
+ for (i=0; i<mc->mc_snum; i++)
+ mdb_page_unref(mc->mc_txn, mc->mc_pg[i]);
+ if (mc->mc_ovpg) {
+ mdb_page_unref(mc->mc_txn, mc->mc_ovpg);
+ mc->mc_ovpg = 0;
+ }
+ mc->mc_snum = mc->mc_top = 0;
+ mc->mc_pg[0] = NULL;
+ mc->mc_flags &= ~C_INITIALIZED;
+}
+#define MDB_CURSOR_UNREF(mc, force) \
+ (((force) || ((mc)->mc_flags & C_INITIALIZED)) \
+ ? mdb_cursor_unref(mc) \
+ : (void)0)
+
+#else
+#define MDB_PAGE_UNREF(txn, mp)
+#define MDB_CURSOR_UNREF(mc, force) ((void)0)
+#endif /* MDB_VL32 */
+
/** Loosen or free a single page.
* Saves single pages to a list for future reuse
* in this same txn. It has been pulled from the freeDB
@@ -1803,7 +2030,7 @@ mdb_page_loose(MDB_cursor *mc, MDB_page *mp)
if (mp != dl[x].mptr) { /* bad cursor? */
mc->mc_flags &= ~(C_INITIALIZED|C_EOF);
txn->mt_flags |= MDB_TXN_ERROR;
- return MDB_CORRUPTED;
+ return MDB_PROBLEM;
}
/* ok, it's ours */
loose = 1;
@@ -1815,8 +2042,7 @@ mdb_page_loose(MDB_cursor *mc, MDB_page *mp)
}
}
if (loose) {
- DPRINTF(("loosen db %d page %"Z"u", DDBI(mc),
- mp->mp_pgno));
+ DPRINTF(("loosen db %d page %"Yu, DDBI(mc), mp->mp_pgno));
NEXT_LOOSE_PAGE(mp) = txn->mt_loose_pgs;
txn->mt_loose_pgs = mp;
txn->mt_loose_count++;
@@ -1842,7 +2068,7 @@ mdb_pages_xkeep(MDB_cursor *mc, unsigned pflags, int all)
{
enum { Mask = P_SUBP|P_DIRTY|P_LOOSE|P_KEEP };
MDB_txn *txn = mc->mc_txn;
- MDB_cursor *m3;
+ MDB_cursor *m3, *m0 = mc;
MDB_xcursor *mx;
MDB_page *dp, *mp;
MDB_node *leaf;
@@ -1885,7 +2111,7 @@ mdb_pages_xkeep(MDB_cursor *mc, unsigned pflags, int all)
pgno_t pgno = txn->mt_dbs[i].md_root;
if (pgno == P_INVALID)
continue;
- if ((rc = mdb_page_get(txn, pgno, &dp, &level)) != MDB_SUCCESS)
+ if ((rc = mdb_page_get(m0, pgno, &dp, &level)) != MDB_SUCCESS)
break;
if ((dp->mp_flags & Mask) == pflags && level <= 1)
dp->mp_flags ^= P_KEEP;
@@ -2074,6 +2300,8 @@ mdb_page_dirty(MDB_txn *txn, MDB_page *mp)
* Do not modify the freedB, just merge freeDB records into me_pghead[]
* and move me_pglast to say which records were consumed. Only this
* function can create me_pghead and move me_pglast/mt_next_pgno.
+ * When #MDB_DEVEL & 2, it is not affected by #mdb_freelist_save(): it
+ * then uses the transaction's original snapshot of the freeDB.
* @param[in] mc cursor A cursor handle identifying the transaction and
* database for which we are allocating.
* @param[in] num the number of pages to allocate.
@@ -2111,8 +2339,7 @@ mdb_page_alloc(MDB_cursor *mc, int num, MDB_page **mp)
np = txn->mt_loose_pgs;
txn->mt_loose_pgs = NEXT_LOOSE_PAGE(np);
txn->mt_loose_count--;
- DPRINTF(("db %d use loose page %"Z"u", DDBI(mc),
- np->mp_pgno));
+ DPRINTF(("db %d use loose page %"Yu, DDBI(mc), np->mp_pgno));
*mp = np;
return MDB_SUCCESS;
}
@@ -2149,6 +2376,14 @@ mdb_page_alloc(MDB_cursor *mc, int num, MDB_page **mp)
last = env->me_pglast;
oldest = env->me_pgoldest;
mdb_cursor_init(&m2, txn, FREE_DBI, NULL);
+#if (MDB_DEVEL) & 2 /* "& 2" so MDB_DEVEL=1 won't hide bugs breaking freeDB */
+ /* Use original snapshot. TODO: Should need less care in code
+ * which modifies the database. Maybe we can delete some code?
+ */
+ m2.mc_flags |= C_ORIG_RDONLY;
+ m2.mc_db = &env->me_metas[(txn->mt_txnid-1) & 1]->mm_dbs[FREE_DBI];
+ m2.mc_dbflag = (unsigned char *)""; /* probably unnecessary */
+#endif
if (last) {
op = MDB_SET_RANGE;
key.mv_data = &last; /* will look up last+1 */
@@ -2189,7 +2424,7 @@ mdb_page_alloc(MDB_cursor *mc, int num, MDB_page **mp)
}
np = m2.mc_pg[m2.mc_top];
leaf = NODEPTR(np, m2.mc_ki[m2.mc_top]);
- if ((rc = mdb_node_read(txn, leaf, &data)) != MDB_SUCCESS)
+ if ((rc = mdb_node_read(&m2, leaf, &data)) != MDB_SUCCESS)
return rc;
idl = (MDB_ID *) data.mv_data;
@@ -2206,10 +2441,10 @@ mdb_page_alloc(MDB_cursor *mc, int num, MDB_page **mp)
}
env->me_pglast = last;
#if (MDB_DEBUG) > 1
- DPRINTF(("IDL read txn %"Z"u root %"Z"u num %u",
+ DPRINTF(("IDL read txn %"Yu" root %"Yu" num %u",
last, txn->mt_dbs[FREE_DBI].md_root, i));
for (j = i; j; j--)
- DPRINTF(("IDL %"Z"u", idl[j]));
+ DPRINTF(("IDL %"Yu, idl[j]));
#endif
/* Merge in descending sorted order */
mdb_midl_xmerge(mop, idl);
@@ -2224,6 +2459,20 @@ mdb_page_alloc(MDB_cursor *mc, int num, MDB_page **mp)
rc = MDB_MAP_FULL;
goto fail;
}
+#if defined(_WIN32) && !defined(MDB_VL32)
+ if (!(env->me_flags & MDB_RDONLY)) {
+ void *p;
+ p = (MDB_page *)(env->me_map + env->me_psize * pgno);
+ p = VirtualAlloc(p, env->me_psize * num, MEM_COMMIT,
+ (env->me_flags & MDB_WRITEMAP) ? PAGE_READWRITE:
+ PAGE_READONLY);
+ if (!p) {
+ DPUTS("VirtualAlloc failed");
+ rc = ErrCode();
+ goto fail;
+ }
+ }
+#endif
search_done:
if (env->me_flags & MDB_WRITEMAP) {
@@ -2365,7 +2614,7 @@ mdb_page_touch(MDB_cursor *mc)
(rc = mdb_page_alloc(mc, 1, &np)))
goto fail;
pgno = np->mp_pgno;
- DPRINTF(("touched db %d page %"Z"u -> %"Z"u", DDBI(mc),
+ DPRINTF(("touched db %d page %"Yu" -> %"Yu, DDBI(mc),
mp->mp_pgno, pgno));
mdb_cassert(mc, mp->mp_pgno != pgno);
mdb_midl_xappend(txn->mt_free_pgs, mp->mp_pgno);
@@ -2389,7 +2638,7 @@ mdb_page_touch(MDB_cursor *mc)
if (mp != dl[x].mptr) { /* bad cursor? */
mc->mc_flags &= ~(C_INITIALIZED|C_EOF);
txn->mt_flags |= MDB_TXN_ERROR;
- return MDB_CORRUPTED;
+ return MDB_PROBLEM;
}
return 0;
}
@@ -2439,6 +2688,7 @@ done:
}
}
}
+ MDB_PAGE_UNREF(mc->mc_txn, mp);
return 0;
fail:
@@ -2447,7 +2697,7 @@ fail:
}
int
-mdb_env_sync(MDB_env *env, int force)
+mdb_env_sync0(MDB_env *env, int force, pgno_t numpgs)
{
int rc = 0;
if (env->me_flags & MDB_RDONLY)
@@ -2456,7 +2706,7 @@ mdb_env_sync(MDB_env *env, int force)
if (env->me_flags & MDB_WRITEMAP) {
int flags = ((env->me_flags & MDB_MAPASYNC) && !force)
? MS_ASYNC : MS_SYNC;
- if (MDB_MSYNC(env->me_map, env->me_mapsize, flags))
+ if (MDB_MSYNC(env->me_map, env->me_psize * numpgs, flags))
rc = ErrCode();
#ifdef _WIN32
else if (flags == MS_SYNC && MDB_FDATASYNC(env->me_fd))
@@ -2476,6 +2726,13 @@ mdb_env_sync(MDB_env *env, int force)
return rc;
}
+int
+mdb_env_sync(MDB_env *env, int force)
+{
+ MDB_meta *m = mdb_env_pick_meta(env);
+ return mdb_env_sync0(env, force, m->mm_last_pg+1);
+}
+
/** Back up parent txn's cursors, then grab the originals for tracking */
static int
mdb_cursor_shadow(MDB_txn *src, MDB_txn *dst)
@@ -2720,6 +2977,9 @@ mdb_txn_renew0(MDB_txn *txn)
/* Moved to here to avoid a data race in read TXNs */
txn->mt_next_pgno = meta->mm_last_pg+1;
+#ifdef MDB_VL32
+ txn->mt_last_pgno = txn->mt_next_pgno - 1;
+#endif
txn->mt_flags = flags;
@@ -2755,7 +3015,7 @@ mdb_txn_renew(MDB_txn *txn)
rc = mdb_txn_renew0(txn);
if (rc == MDB_SUCCESS) {
- DPRINTF(("renew txn %"Z"u%c %p on mdbenv %p, root page %"Z"u",
+ DPRINTF(("renew txn %"Yu"%c %p on mdbenv %p, root page %"Yu,
txn->mt_txnid, (txn->mt_flags & MDB_TXN_RDONLY) ? 'r' : 'w',
(void *)txn, (void *)txn->mt_env, txn->mt_dbs[MAIN_DBI].md_root));
}
@@ -2798,6 +3058,17 @@ mdb_txn_begin(MDB_env *env, MDB_txn *parent, unsigned int flags, MDB_txn **ret)
DPRINTF(("calloc: %s", strerror(errno)));
return ENOMEM;
}
+#ifdef MDB_VL32
+ if (!parent) {
+ txn->mt_rpages = malloc(MDB_TRPAGE_SIZE * sizeof(MDB_ID3));
+ if (!txn->mt_rpages) {
+ free(txn);
+ return ENOMEM;
+ }
+ txn->mt_rpages[0].mid = 0;
+ txn->mt_rpcheck = MDB_TRPAGE_SIZE/2;
+ }
+#endif
txn->mt_dbxs = env->me_dbxs; /* static */
txn->mt_dbs = (MDB_db *) ((char *)txn + tsize);
txn->mt_dbflags = (unsigned char *)txn + size - env->me_maxdbs;
@@ -2825,6 +3096,9 @@ mdb_txn_begin(MDB_env *env, MDB_txn *parent, unsigned int flags, MDB_txn **ret)
parent->mt_child = txn;
txn->mt_parent = parent;
txn->mt_numdbs = parent->mt_numdbs;
+#ifdef MDB_VL32
+ txn->mt_rpages = parent->mt_rpages;
+#endif
memcpy(txn->mt_dbs, parent->mt_dbs, txn->mt_numdbs * sizeof(MDB_db));
/* Copy parent's mt_dbflags, but clear DB_NEW */
for (i=0; i<txn->mt_numdbs; i++)
@@ -2850,12 +3124,16 @@ renew:
rc = mdb_txn_renew0(txn);
}
if (rc) {
- if (txn != env->me_txn0)
+ if (txn != env->me_txn0) {
+#ifdef MDB_VL32
+ free(txn->mt_rpages);
+#endif
free(txn);
+ }
} else {
txn->mt_flags |= flags; /* could not change txn=me_txn0 earlier */
*ret = txn;
- DPRINTF(("begin txn %"Z"u%c %p on mdbenv %p, root page %"Z"u",
+ DPRINTF(("begin txn %"Yu"%c %p on mdbenv %p, root page %"Yu,
txn->mt_txnid, (flags & MDB_RDONLY) ? 'r' : 'w',
(void *) txn, (void *) env, txn->mt_dbs[MAIN_DBI].md_root));
}
@@ -2870,7 +3148,7 @@ mdb_txn_env(MDB_txn *txn)
return txn->mt_env;
}
-size_t
+mdb_size_t
mdb_txn_id(MDB_txn *txn)
{
if(!txn) return 0;
@@ -2922,7 +3200,7 @@ mdb_txn_end(MDB_txn *txn, unsigned mode)
/* Export or close DBI handles opened in this txn */
mdb_dbis_update(txn, mode & MDB_END_UPDATE);
- DPRINTF(("%s txn %"Z"u%c %p on mdbenv %p, root page %"Z"u",
+ DPRINTF(("%s txn %"Yu"%c %p on mdbenv %p, root page %"Yu,
names[mode & MDB_END_OPMASK],
txn->mt_txnid, (txn->mt_flags & MDB_TXN_RDONLY) ? 'r' : 'w',
(void *) txn, (void *)env, txn->mt_dbs[MAIN_DBI].md_root));
@@ -2976,7 +3254,31 @@ mdb_txn_end(MDB_txn *txn, unsigned mode)
mdb_midl_free(pghead);
}
-
+#ifdef MDB_VL32
+ if (!txn->mt_parent) {
+ MDB_ID3L el = env->me_rpages, tl = txn->mt_rpages;
+ unsigned i, x, n = tl[0].mid;
+ pthread_mutex_lock(&env->me_rpmutex);
+ for (i = 1; i <= n; i++) {
+ if (tl[i].mid & (MDB_RPAGE_CHUNK-1)) {
+ /* tmp overflow pages that we didn't share in env */
+ munmap(tl[i].mptr, tl[i].mcnt * env->me_psize);
+ } else {
+ x = mdb_mid3l_search(el, tl[i].mid);
+ if (tl[i].mptr == el[x].mptr) {
+ el[x].mref--;
+ } else {
+ /* another tmp overflow page */
+ munmap(tl[i].mptr, tl[i].mcnt * env->me_psize);
+ }
+ }
+ }
+ pthread_mutex_unlock(&env->me_rpmutex);
+ tl[0].mid = 0;
+ if (mode & MDB_END_FREE)
+ free(tl);
+ }
+#endif
if (mode & MDB_END_FREE)
free(txn);
}
@@ -3008,6 +3310,9 @@ mdb_txn_abort(MDB_txn *txn)
/** Save the freelist as of this transaction to the freeDB.
* This changes the freelist. Keep trying until it stabilizes.
+ *
+ * When (MDB_DEVEL) & 2, the changes do not affect #mdb_page_alloc(),
+ * it then uses the transaction's original snapshot of the freeDB.
*/
static int
mdb_freelist_save(MDB_txn *txn)
@@ -3096,10 +3401,10 @@ mdb_freelist_save(MDB_txn *txn)
#if (MDB_DEBUG) > 1
{
unsigned int i = free_pgs[0];
- DPRINTF(("IDL write txn %"Z"u root %"Z"u num %u",
+ DPRINTF(("IDL write txn %"Yu" root %"Yu" num %u",
txn->mt_txnid, txn->mt_dbs[FREE_DBI].md_root, i));
for (; i; i--)
- DPRINTF(("IDL %"Z"u", free_pgs[i]));
+ DPRINTF(("IDL %"Yu, free_pgs[i]));
}
#endif
continue;
@@ -3210,15 +3515,16 @@ mdb_page_flush(MDB_txn *txn, int keep)
MDB_ID2L dl = txn->mt_u.dirty_list;
unsigned psize = env->me_psize, j;
int i, pagecount = dl[0].mid, rc;
- size_t size = 0, pos = 0;
+ size_t size = 0;
+ off_t pos = 0;
pgno_t pgno = 0;
MDB_page *dp = NULL;
#ifdef _WIN32
OVERLAPPED ov;
#else
struct iovec iov[MDB_COMMIT_PAGES];
- ssize_t wpos = 0, wsize = 0, wres;
- size_t next_pos = 1; /* impossible pos, so pos != next_pos */
+ ssize_t wsize = 0, wres;
+ off_t wpos = 0, next_pos = 1; /* impossible pos, so pos != next_pos */
int n = 0;
#endif
@@ -3266,7 +3572,7 @@ mdb_page_flush(MDB_txn *txn, int keep)
* the write offset, to at least save the overhead of a Seek
* system call.
*/
- DPRINTF(("committing page %"Z"u", pgno));
+ DPRINTF(("committing page %"Yu, pgno));
memset(&ov, 0, sizeof(ov));
ov.Offset = pos & 0xffffffff;
ov.OffsetHigh = pos >> 16 >> 16;
@@ -3317,7 +3623,7 @@ retry_seek:
wpos = pos;
wsize = 0;
}
- DPRINTF(("committing page %"Z"u", pgno));
+ DPRINTF(("committing page %"Yu, pgno));
next_pos = pos + size;
iov[n].iov_len = size;
iov[n].iov_base = (char *)dp;
@@ -3325,6 +3631,10 @@ retry_seek:
n++;
#endif /* _WIN32 */
}
+#ifdef MDB_VL32
+ if (pgno > txn->mt_last_pgno)
+ txn->mt_last_pgno = pgno;
+#endif
/* MIPS has cache coherency issues, this is a no-op everywhere else
* Note: for any size >= on-chip cache size, entire on-chip cache is
@@ -3526,7 +3836,7 @@ mdb_txn_commit(MDB_txn *txn)
!(txn->mt_flags & (MDB_TXN_DIRTY|MDB_TXN_SPILLS)))
goto done;
- DPRINTF(("committing txn %"Z"u %p on mdbenv %p, root page %"Z"u",
+ DPRINTF(("committing txn %"Yu" %p on mdbenv %p, root page %"Yu,
txn->mt_txnid, (void*)txn, (void*)env, txn->mt_dbs[MAIN_DBI].md_root));
/* Update DB root pointers */
@@ -3564,9 +3874,12 @@ mdb_txn_commit(MDB_txn *txn)
mdb_audit(txn);
#endif
- if ((rc = mdb_page_flush(txn, 0)) ||
- (rc = mdb_env_sync(env, 0)) ||
- (rc = mdb_env_write_meta(txn)))
+ if ((rc = mdb_page_flush(txn, 0)))
+ goto fail;
+ if (!F_ISSET(txn->mt_flags, MDB_TXN_NOSYNC) &&
+ (rc = mdb_env_sync0(env, 0, txn->mt_next_pgno)))
+ goto fail;
+ if ((rc = mdb_env_write_meta(txn)))
goto fail;
end_mode = MDB_END_COMMITTED|MDB_END_UPDATE;
@@ -3621,7 +3934,7 @@ mdb_env_read_header(MDB_env *env, MDB_meta *meta)
p = (MDB_page *)&pbuf;
if (!F_ISSET(p->mp_flags, P_META)) {
- DPRINTF(("page %"Z"u not a meta page", p->mp_pgno));
+ DPRINTF(("page %"Yu" not a meta page", p->mp_pgno));
return MDB_INVALID;
}
@@ -3691,7 +4004,6 @@ mdb_env_init_meta(MDB_env *env, MDB_meta *meta)
p = calloc(NUM_METAS, psize);
if (!p)
return ENOMEM;
-
p->mp_pgno = 0;
p->mp_flags = P_META;
*(MDB_meta *)METADATA(p) = *meta;
@@ -3722,7 +4034,7 @@ mdb_env_write_meta(MDB_txn *txn)
MDB_env *env;
MDB_meta meta, metab, *mp;
unsigned flags;
- size_t mapsize;
+ mdb_size_t mapsize;
off_t off;
int rc, len, toggle;
char *ptr;
@@ -3734,11 +4046,11 @@ mdb_env_write_meta(MDB_txn *txn)
#endif
toggle = txn->mt_txnid & 1;
- DPRINTF(("writing meta page %d for root page %"Z"u",
+ DPRINTF(("writing meta page %d for root page %"Yu,
toggle, txn->mt_dbs[MAIN_DBI].md_root));
env = txn->mt_env;
- flags = env->me_flags;
+ flags = txn->mt_flags | env->me_flags;
mp = env->me_metas[toggle];
mapsize = env->me_metas[toggle ^ 1]->mm_mapsize;
/* Persist any increases of mapsize config */
@@ -3867,6 +4179,9 @@ mdb_env_create(MDB_env **env)
#ifdef MDB_USE_POSIX_SEM
e->me_rmutex = SEM_FAILED;
e->me_wmutex = SEM_FAILED;
+#elif defined MDB_USE_SYSV_SEM
+ e->me_rmutex->semid = -1;
+ e->me_wmutex->semid = -1;
#endif
e->me_pid = getpid();
GET_PAGESIZE(e->me_os_psize);
@@ -3875,6 +4190,19 @@ mdb_env_create(MDB_env **env)
return MDB_SUCCESS;
}
+#ifdef _WIN32
+/** @brief Map a result from an NTAPI call to WIN32. */
+static DWORD
+mdb_nt2win32(NTSTATUS st)
+{
+ OVERLAPPED o = {0};
+ DWORD br;
+ o.Internal = st;
+ GetOverlappedResult(NULL, &o, &br, FALSE);
+ return GetLastError();
+}
+#endif
+
static int ESECT
mdb_env_map(MDB_env *env, void *addr)
{
@@ -3882,42 +4210,51 @@ mdb_env_map(MDB_env *env, void *addr)
unsigned int flags = env->me_flags;
#ifdef _WIN32
int rc;
+ int access = SECTION_MAP_READ;
HANDLE mh;
- LONG sizelo, sizehi;
- size_t msize;
+ void *map;
+ SIZE_T msize;
+ ULONG pageprot = PAGE_READONLY, secprot, alloctype;
+ if (flags & MDB_WRITEMAP) {
+ access |= SECTION_MAP_WRITE;
+ pageprot = PAGE_READWRITE;
+ }
if (flags & MDB_RDONLY) {
- /* Don't set explicit map size, use whatever exists */
+ secprot = PAGE_READONLY;
msize = 0;
- sizelo = 0;
- sizehi = 0;
+ alloctype = 0;
} else {
+ secprot = PAGE_READWRITE;
msize = env->me_mapsize;
- sizelo = msize & 0xffffffff;
- sizehi = msize >> 16 >> 16; /* only needed on Win64 */
-
- /* Windows won't create mappings for zero length files.
- * and won't map more than the file size.
- * Just set the maxsize right now.
- */
- if (SetFilePointer(env->me_fd, sizelo, &sizehi, 0) != (DWORD)sizelo
- || !SetEndOfFile(env->me_fd)
- || SetFilePointer(env->me_fd, 0, NULL, 0) != 0)
- return ErrCode();
+ alloctype = MEM_RESERVE;
}
- mh = CreateFileMapping(env->me_fd, NULL, flags & MDB_WRITEMAP ?
- PAGE_READWRITE : PAGE_READONLY,
- sizehi, sizelo, NULL);
- if (!mh)
- return ErrCode();
- env->me_map = MapViewOfFileEx(mh, flags & MDB_WRITEMAP ?
- FILE_MAP_WRITE : FILE_MAP_READ,
- 0, 0, msize, addr);
- rc = env->me_map ? 0 : ErrCode();
- CloseHandle(mh);
+ rc = NtCreateSection(&mh, access, NULL, NULL, secprot, SEC_RESERVE, env->me_fd);
if (rc)
- return rc;
+ return mdb_nt2win32(rc);
+ map = addr;
+#ifdef MDB_VL32
+ msize = NUM_METAS * env->me_psize;
+#endif
+ rc = NtMapViewOfSection(mh, GetCurrentProcess(), &map, 0, 0, NULL, &msize, ViewUnmap, alloctype, pageprot);
+#ifdef MDB_VL32
+ env->me_fmh = mh;
+#else
+ NtClose(mh);
+#endif
+ if (rc)
+ return mdb_nt2win32(rc);
+ env->me_map = map;
+#else
+#ifdef MDB_VL32
+ (void) flags;
+ env->me_map = mmap(addr, NUM_METAS * env->me_psize, PROT_READ, MAP_SHARED,
+ env->me_fd, 0);
+ if (env->me_map == MAP_FAILED) {
+ env->me_map = NULL;
+ return ErrCode();
+ }
#else
int prot = PROT_READ;
if (flags & MDB_WRITEMAP) {
@@ -3951,6 +4288,7 @@ mdb_env_map(MDB_env *env, void *addr)
*/
if (addr && env->me_map != addr)
return EBUSY; /* TODO: Make a new MDB_* error code? */
+#endif
p = (MDB_page *)env->me_map;
env->me_metas[0] = METADATA(p);
@@ -3960,15 +4298,17 @@ mdb_env_map(MDB_env *env, void *addr)
}
int ESECT
-mdb_env_set_mapsize(MDB_env *env, size_t size)
+mdb_env_set_mapsize(MDB_env *env, mdb_size_t size)
{
/* If env is already open, caller is responsible for making
* sure there are no active txns.
*/
if (env->me_map) {
- int rc;
MDB_meta *meta;
+#ifndef MDB_VL32
void *old;
+ int rc;
+#endif
if (env->me_txn)
return EINVAL;
meta = mdb_env_pick_meta(env);
@@ -3976,16 +4316,21 @@ mdb_env_set_mapsize(MDB_env *env, size_t size)
size = meta->mm_mapsize;
{
/* Silently round up to minimum if the size is too small */
- size_t minsize = (meta->mm_last_pg + 1) * env->me_psize;
+ mdb_size_t minsize = (meta->mm_last_pg + 1) * env->me_psize;
if (size < minsize)
size = minsize;
}
+#ifndef MDB_VL32
+ /* For MDB_VL32 this bit is a noop since we dynamically remap
+ * chunks of the DB anyway.
+ */
munmap(env->me_map, env->me_mapsize);
env->me_mapsize = size;
old = (env->me_flags & MDB_FIXEDMAP) ? env->me_map : NULL;
rc = mdb_env_map(env, old);
if (rc)
return rc;
+#endif /* !MDB_VL32 */
}
env->me_mapsize = size;
if (env->me_psize)
@@ -4021,7 +4366,7 @@ mdb_env_get_maxreaders(MDB_env *env, unsigned int *readers)
}
static int ESECT
-mdb_fsize(HANDLE fd, size_t *size)
+mdb_fsize(HANDLE fd, mdb_size_t *size)
{
#ifdef _WIN32
LARGE_INTEGER fsize;
@@ -4135,7 +4480,7 @@ mdb_env_open2(MDB_env *env)
/* Make sure mapsize >= committed data size. Even when using
* mm_mapsize, which could be broken in old files (ITS#7789).
*/
- size_t minsize = (meta.mm_last_pg + 1) * meta.mm_psize;
+ mdb_size_t minsize = (meta.mm_last_pg + 1) * meta.mm_psize;
if (env->me_mapsize < minsize)
env->me_mapsize = minsize;
}
@@ -4154,6 +4499,18 @@ mdb_env_open2(MDB_env *env)
return rc;
newenv = 0;
}
+#ifdef _WIN32
+ /* For FIXEDMAP, make sure the file is non-empty before we attempt to map it */
+ if (newenv) {
+ char dummy = 0;
+ DWORD len;
+ rc = WriteFile(env->me_fd, &dummy, 1, &len, NULL);
+ if (!rc) {
+ rc = ErrCode();
+ return rc;
+ }
+ }
+#endif
rc = mdb_env_map(env, (flags & MDB_FIXEDMAP) ? meta.mm_address : NULL);
if (rc)
@@ -4183,13 +4540,13 @@ mdb_env_open2(MDB_env *env)
DPRINTF(("opened database version %u, pagesize %u",
meta->mm_version, env->me_psize));
- DPRINTF(("using meta page %d", (int) (meta->mm_txnid & 1)));
- DPRINTF(("depth: %u", db->md_depth));
- DPRINTF(("entries: %"Z"u", db->md_entries));
- DPRINTF(("branch pages: %"Z"u", db->md_branch_pages));
- DPRINTF(("leaf pages: %"Z"u", db->md_leaf_pages));
- DPRINTF(("overflow pages: %"Z"u", db->md_overflow_pages));
- DPRINTF(("root: %"Z"u", db->md_root));
+ DPRINTF(("using meta page %d", (int) (meta->mm_txnid & 1)));
+ DPRINTF(("depth: %u", db->md_depth));
+ DPRINTF(("entries: %"Yu, db->md_entries));
+ DPRINTF(("branch pages: %"Yu, db->md_branch_pages));
+ DPRINTF(("leaf pages: %"Yu, db->md_leaf_pages));
+ DPRINTF(("overflow pages: %"Yu, db->md_overflow_pages));
+ DPRINTF(("root: %"Yu, db->md_root));
}
#endif
@@ -4465,6 +4822,10 @@ mdb_env_setup_locks(MDB_env *env, char *lpath, int mode, int *excl)
# define MDB_CLOEXEC 0
#endif
#endif
+#ifdef MDB_USE_SYSV_SEM
+ int semid;
+ union semun semu;
+#endif
int rc;
off_t size, rsize;
@@ -4616,19 +4977,42 @@ mdb_env_setup_locks(MDB_env *env, char *lpath, int mode, int *excl)
env->me_wmutex = sem_open(env->me_txns->mti_wmname,
O_CREAT|O_EXCL, mode, 1);
if (env->me_wmutex == SEM_FAILED) goto fail_errno;
+#elif defined(MDB_USE_SYSV_SEM)
+ unsigned short vals[2] = {1, 1};
+ key_t key = ftok(lpath, 'M');
+ if (key == -1)
+ goto fail_errno;
+ semid = semget(key, 2, (mode & 0777) | IPC_CREAT);
+ if (semid < 0)
+ goto fail_errno;
+ semu.array = vals;
+ if (semctl(semid, 0, SETALL, semu) < 0)
+ goto fail_errno;
+ env->me_txns->mti_semid = semid;
+ env->me_txns->mti_rlocked = 0;
+ env->me_txns->mti_wlocked = 0;
#else /* MDB_USE_POSIX_MUTEX: */
pthread_mutexattr_t mattr;
- if ((rc = pthread_mutexattr_init(&mattr))
- || (rc = pthread_mutexattr_setpshared(&mattr, PTHREAD_PROCESS_SHARED))
+ /* Solaris needs this before initing a robust mutex. Otherwise
+ * it may skip the init and return EBUSY "seems someone already
+ * inited" or EINVAL "it was inited differently".
+ */
+ memset(env->me_txns->mti_rmutex, 0, sizeof(*env->me_txns->mti_rmutex));
+ memset(env->me_txns->mti_wmutex, 0, sizeof(*env->me_txns->mti_wmutex));
+
+ if ((rc = pthread_mutexattr_init(&mattr)) != 0)
+ goto fail;
+ rc = pthread_mutexattr_setpshared(&mattr, PTHREAD_PROCESS_SHARED);
#ifdef MDB_ROBUST_SUPPORTED
- || (rc = pthread_mutexattr_setrobust(&mattr, PTHREAD_MUTEX_ROBUST))
+ if (!rc) rc = pthread_mutexattr_setrobust(&mattr, PTHREAD_MUTEX_ROBUST);
#endif
- || (rc = pthread_mutex_init(env->me_txns->mti_rmutex, &mattr))
- || (rc = pthread_mutex_init(env->me_txns->mti_wmutex, &mattr)))
- goto fail;
+ if (!rc) rc = pthread_mutex_init(env->me_txns->mti_rmutex, &mattr);
+ if (!rc) rc = pthread_mutex_init(env->me_txns->mti_wmutex, &mattr);
pthread_mutexattr_destroy(&mattr);
-#endif /* _WIN32 || MDB_USE_POSIX_SEM */
+ if (rc)
+ goto fail;
+#endif /* _WIN32 || ... */
env->me_txns->mti_magic = MDB_MAGIC;
env->me_txns->mti_format = MDB_LOCK_FORMAT;
@@ -4636,6 +5020,9 @@ mdb_env_setup_locks(MDB_env *env, char *lpath, int mode, int *excl)
env->me_txns->mti_numreaders = 0;
} else {
+#ifdef MDB_USE_SYSV_SEM
+ struct semid_ds buf;
+#endif
if (env->me_txns->mti_magic != MDB_MAGIC) {
DPUTS("lock region has invalid magic");
rc = MDB_INVALID;
@@ -4661,8 +5048,33 @@ mdb_env_setup_locks(MDB_env *env, char *lpath, int mode, int *excl)
if (env->me_rmutex == SEM_FAILED) goto fail_errno;
env->me_wmutex = sem_open(env->me_txns->mti_wmname, 0);
if (env->me_wmutex == SEM_FAILED) goto fail_errno;
+#elif defined(MDB_USE_SYSV_SEM)
+ semid = env->me_txns->mti_semid;
+ semu.buf = &buf;
+ /* check for read access */
+ if (semctl(semid, 0, IPC_STAT, semu) < 0)
+ goto fail_errno;
+ /* check for write access */
+ if (semctl(semid, 0, IPC_SET, semu) < 0)
+ goto fail_errno;
#endif
}
+#ifdef MDB_USE_SYSV_SEM
+ env->me_rmutex->semid = semid;
+ env->me_wmutex->semid = semid;
+ env->me_rmutex->semnum = 0;
+ env->me_wmutex->semnum = 1;
+ env->me_rmutex->locked = &env->me_txns->mti_rlocked;
+ env->me_wmutex->locked = &env->me_txns->mti_wlocked;
+#endif
+#ifdef MDB_VL32
+#ifdef _WIN32
+ env->me_rpmutex = CreateMutex(NULL, FALSE, NULL);
+#else
+ pthread_mutex_init(&env->me_rpmutex, NULL);
+#endif
+#endif
+
return MDB_SUCCESS;
fail_errno:
@@ -4701,6 +5113,17 @@ mdb_env_open(MDB_env *env, const char *path, unsigned int flags, mdb_mode_t mode
if (env->me_fd!=INVALID_HANDLE_VALUE || (flags & ~(CHANGEABLE|CHANGELESS)))
return EINVAL;
+#ifdef MDB_VL32
+ if (flags & MDB_WRITEMAP) {
+ /* silently ignore WRITEMAP in 32 bit mode */
+ flags ^= MDB_WRITEMAP;
+ }
+ if (flags & MDB_FIXEDMAP) {
+ /* cannot support FIXEDMAP */
+ return EINVAL;
+ }
+#endif
+
len = strlen(path);
if (flags & MDB_NOSUBDIR) {
rc = len + sizeof(LOCKSUFF) + len + 1;
@@ -4730,6 +5153,17 @@ mdb_env_open(MDB_env *env, const char *path, unsigned int flags, mdb_mode_t mode
(env->me_dirty_list = calloc(MDB_IDL_UM_SIZE, sizeof(MDB_ID2)))))
rc = ENOMEM;
}
+#ifdef MDB_VL32
+ if (!rc) {
+ env->me_rpages = malloc(MDB_ERPAGE_SIZE * sizeof(MDB_ID3));
+ if (!env->me_rpages) {
+ rc = ENOMEM;
+ goto leave;
+ }
+ env->me_rpages[0].mid = 0;
+ env->me_rpcheck = MDB_ERPAGE_SIZE/2;
+ }
+#endif
env->me_flags = flags |= MDB_ENV_ACTIVE;
if (rc)
goto leave;
@@ -4828,6 +5262,16 @@ mdb_env_open(MDB_env *env, const char *path, unsigned int flags, mdb_mode_t mode
txn->mt_dbiseqs = (unsigned int *)(txn->mt_cursors + env->me_maxdbs);
txn->mt_dbflags = (unsigned char *)(txn->mt_dbiseqs + env->me_maxdbs);
txn->mt_env = env;
+#ifdef MDB_VL32
+ txn->mt_rpages = malloc(MDB_TRPAGE_SIZE * sizeof(MDB_ID3));
+ if (!txn->mt_rpages) {
+ free(txn);
+ rc = ENOMEM;
+ goto leave;
+ }
+ txn->mt_rpages[0].mid = 0;
+ txn->mt_rpcheck = MDB_TRPAGE_SIZE/2;
+#endif
txn->mt_dbxs = env->me_dbxs;
txn->mt_flags = MDB_TXN_FINISHED;
env->me_txn0 = txn;
@@ -4866,6 +5310,15 @@ mdb_env_close0(MDB_env *env, int excl)
free(env->me_dbflags);
free(env->me_path);
free(env->me_dirty_list);
+#ifdef MDB_VL32
+ if (env->me_txn0 && env->me_txn0->mt_rpages)
+ free(env->me_txn0->mt_rpages);
+ { unsigned int x;
+ for (x=1; x<=env->me_rpages[0].mid; x++)
+ munmap(env->me_rpages[x].mptr, env->me_rpages[x].mcnt * env->me_psize);
+ }
+ free(env->me_rpages);
+#endif
free(env->me_txn0);
mdb_midl_free(env->me_free_pgs);
@@ -4883,7 +5336,11 @@ mdb_env_close0(MDB_env *env, int excl)
}
if (env->me_map) {
+#ifdef MDB_VL32
+ munmap(env->me_map, NUM_METAS*env->me_psize);
+#else
munmap(env->me_map, env->me_mapsize);
+#endif
}
if (env->me_mfd != env->me_fd && env->me_mfd != INVALID_HANDLE_VALUE)
(void) close(env->me_mfd);
@@ -4924,6 +5381,16 @@ mdb_env_close0(MDB_env *env, int excl)
sem_unlink(env->me_txns->mti_wmname);
}
}
+#elif defined(MDB_USE_SYSV_SEM)
+ if (env->me_rmutex->semid != -1) {
+ /* If we have the filelock: If we are the
+ * only remaining user, clean up semaphores.
+ */
+ if (excl == 0)
+ mdb_env_excl_lock(env, &excl);
+ if (excl > 0)
+ semctl(env->me_rmutex->semid, 0, IPC_RMID);
+ }
#endif
munmap((void *)env->me_txns, (env->me_maxreaders-1)*sizeof(MDB_reader)+sizeof(MDB_txninfo));
}
@@ -4938,6 +5405,14 @@ mdb_env_close0(MDB_env *env, int excl)
#endif
(void) close(env->me_lfd);
}
+#ifdef MDB_VL32
+#ifdef _WIN32
+ if (env->me_fmh) CloseHandle(env->me_fmh);
+ if (env->me_rpmutex) CloseHandle(env->me_rpmutex);
+#else
+ pthread_mutex_destroy(&env->me_rpmutex);
+#endif
+#endif
env->me_flags &= ~(MDB_ENV_ACTIVE|MDB_ENV_TXKEY);
}
@@ -4961,18 +5436,18 @@ mdb_env_close(MDB_env *env)
free(env);
}
-/** Compare two items pointing at aligned size_t's */
+/** Compare two items pointing at aligned #mdb_size_t's */
static int
mdb_cmp_long(const MDB_val *a, const MDB_val *b)
{
- return (*(size_t *)a->mv_data < *(size_t *)b->mv_data) ? -1 :
- *(size_t *)a->mv_data > *(size_t *)b->mv_data;
+ return (*(mdb_size_t *)a->mv_data < *(mdb_size_t *)b->mv_data) ? -1 :
+ *(mdb_size_t *)a->mv_data > *(mdb_size_t *)b->mv_data;
}
/** Compare two items pointing at aligned unsigned int's.
*
* This is also set as #MDB_INTEGERDUP|#MDB_DUPFIXED's #MDB_dbx.%md_dcmp,
- * but #mdb_cmp_clong() is called instead if the data type is size_t.
+ * but #mdb_cmp_clong() is called instead if the data type is #mdb_size_t.
*/
static int
mdb_cmp_int(const MDB_val *a, const MDB_val *b)
@@ -5077,7 +5552,7 @@ mdb_node_search(MDB_cursor *mc, MDB_val *key, int *exactp)
nkeys = NUMKEYS(mp);
- DPRINTF(("searching %u keys in %s %spage %"Z"u",
+ DPRINTF(("searching %u keys in %s %spage %"Yu,
nkeys, IS_LEAF(mp) ? "leaf" : "branch", IS_SUBP(mp) ? "sub-" : "",
mdb_dbg_pgno(mp)));
@@ -5089,7 +5564,7 @@ mdb_node_search(MDB_cursor *mc, MDB_val *key, int *exactp)
* alignment is guaranteed. Use faster mdb_cmp_int.
*/
if (cmp == mdb_cmp_cint && IS_BRANCH(mp)) {
- if (NODEPTR(mp, 1)->mn_ksize == sizeof(size_t))
+ if (NODEPTR(mp, 1)->mn_ksize == sizeof(mdb_size_t))
cmp = mdb_cmp_long;
else
cmp = mdb_cmp_int;
@@ -5125,7 +5600,7 @@ mdb_node_search(MDB_cursor *mc, MDB_val *key, int *exactp)
DPRINTF(("found leaf index %u [%s], rc = %i",
i, DKEY(&nodekey), rc));
else
- DPRINTF(("found branch index %u [%s -> %"Z"u], rc = %i",
+ DPRINTF(("found branch index %u [%s -> %"Yu"], rc = %i",
i, DKEY(&nodekey), NODEPGNO(node), rc));
#endif
if (rc == 0)
@@ -5173,7 +5648,7 @@ static void
mdb_cursor_pop(MDB_cursor *mc)
{
if (mc->mc_snum) {
- DPRINTF(("popping page %"Z"u off db %d cursor %p",
+ DPRINTF(("popping page %"Yu" off db %d cursor %p",
mc->mc_pg[mc->mc_top]->mp_pgno, DDBI(mc), (void *) mc));
mc->mc_snum--;
@@ -5189,7 +5664,7 @@ mdb_cursor_pop(MDB_cursor *mc)
static int
mdb_cursor_push(MDB_cursor *mc, MDB_page *mp)
{
- DPRINTF(("pushing page %"Z"u on db %d cursor %p", mp->mp_pgno,
+ DPRINTF(("pushing page %"Yu" on db %d cursor %p", mp->mp_pgno,
DDBI(mc), (void *) mc));
if (mc->mc_snum >= CURSOR_STACK) {
@@ -5204,21 +5679,309 @@ mdb_cursor_push(MDB_cursor *mc, MDB_page *mp)
return MDB_SUCCESS;
}
-/** Find the address of the page corresponding to a given page number.
+#ifdef MDB_VL32
+/** Map a read-only page.
+ * There are two levels of tracking in use, a per-txn list and a per-env list.
+ * ref'ing and unref'ing the per-txn list is faster since it requires no
+ * locking. Pages are cached in the per-env list for global reuse, and a lock
+ * is required. Pages are not immediately unmapped when their refcnt goes to
+ * zero; they hang around in case they will be reused again soon.
+ *
+ * When the per-txn list gets full, all pages with refcnt=0 are purged from the
+ * list and their refcnts in the per-env list are decremented.
+ *
+ * When the per-env list gets full, all pages with refcnt=0 are purged from the
+ * list and their pages are unmapped.
+ *
+ * @note "full" means the list has reached its respective rpcheck threshold.
+ * This threshold slowly raises if no pages could be purged on a given check,
+ * and returns to its original value when enough pages were purged.
+ *
+ * If purging doesn't free any slots, filling the per-txn list will return
+ * MDB_TXN_FULL, and filling the per-env list returns MDB_MAP_FULL.
+ *
+ * Reference tracking in a txn is imperfect, pages can linger with non-zero
+ * refcnt even without active references. It was deemed to be too invasive
+ * to add unrefs in every required location. However, all pages are unref'd
+ * at the end of the transaction. This guarantees that no stale references
+ * linger in the per-env list.
+ *
+ * Usually we map chunks of 16 pages at a time, but if an overflow page begins
+ * at the tail of the chunk we extend the chunk to include the entire overflow
+ * page. Unfortunately, pages can be turned into overflow pages after their
+ * chunk was already mapped. In that case we must remap the chunk if the
+ * overflow page is referenced. If the chunk's refcnt is 0 we can just remap
+ * it, otherwise we temporarily map a new chunk just for the overflow page.
+ *
+ * @note this chunk handling means we cannot guarantee that a data item
+ * returned from the DB will stay alive for the duration of the transaction:
+ * We unref pages as soon as a cursor moves away from the page
+ * A subsequent op may cause a purge, which may unmap any unref'd chunks
+ * The caller must copy the data if it must be used later in the same txn.
+ *
+ * Also - our reference counting revolves around cursors, but overflow pages
+ * aren't pointed to by a cursor's page stack. We have to remember them
+ * explicitly, in the added mc_ovpg field. A single cursor can only hold a
+ * reference to one overflow page at a time.
+ *
* @param[in] txn the transaction for this access.
* @param[in] pgno the page number for the page to retrieve.
* @param[out] ret address of a pointer where the page's address will be stored.
- * @param[out] lvl dirty_list inheritance level of found page. 1=current txn, 0=mapped page.
* @return 0 on success, non-zero on failure.
*/
static int
-mdb_page_get(MDB_txn *txn, pgno_t pgno, MDB_page **ret, int *lvl)
+mdb_rpage_get(MDB_txn *txn, pgno_t pg0, MDB_page **ret)
{
MDB_env *env = txn->mt_env;
+ MDB_page *p;
+ MDB_ID3L tl = txn->mt_rpages;
+ MDB_ID3L el = env->me_rpages;
+ MDB_ID3 id3;
+ unsigned x, rem;
+ pgno_t pgno;
+ int rc, retries = 1;
+#ifdef _WIN32
+ LARGE_INTEGER off;
+ SIZE_T len;
+#define SET_OFF(off,val) off.QuadPart = val
+#define MAP(rc,env,addr,len,off) \
+ addr = NULL; \
+ rc = NtMapViewOfSection(env->me_fmh, GetCurrentProcess(), &addr, 0, \
+ len, &off, &len, ViewUnmap, (env->me_flags & MDB_RDONLY) ? 0 : MEM_RESERVE, PAGE_READONLY); \
+ if (rc) rc = mdb_nt2win32(rc)
+#else
+ off_t off;
+ size_t len;
+#define SET_OFF(off,val) off = val
+#define MAP(rc,env,addr,len,off) \
+ addr = mmap(NULL, len, PROT_READ, MAP_SHARED, env->me_fd, off); \
+ rc = (addr == MAP_FAILED) ? errno : 0
+#endif
+
+ /* remember the offset of the actual page number, so we can
+ * return the correct pointer at the end.
+ */
+ rem = pg0 & (MDB_RPAGE_CHUNK-1);
+ pgno = pg0 ^ rem;
+
+ id3.mid = 0;
+ x = mdb_mid3l_search(tl, pgno);
+ if (x <= tl[0].mid && tl[x].mid == pgno) {
+ if (x != tl[0].mid && tl[x+1].mid == pg0)
+ x++;
+ /* check for overflow size */
+ p = (MDB_page *)((char *)tl[x].mptr + rem * env->me_psize);
+ if (IS_OVERFLOW(p) && p->mp_pages + rem > tl[x].mcnt) {
+ id3.mcnt = p->mp_pages + rem;
+ len = id3.mcnt * env->me_psize;
+ SET_OFF(off, pgno * env->me_psize);
+ MAP(rc, env, id3.mptr, len, off);
+ if (rc)
+ return rc;
+ /* check for local-only page */
+ if (rem) {
+ mdb_tassert(txn, tl[x].mid != pg0);
+ /* hope there's room to insert this locally.
+ * setting mid here tells later code to just insert
+ * this id3 instead of searching for a match.
+ */
+ id3.mid = pg0;
+ goto notlocal;
+ } else {
+ /* ignore the mapping we got from env, use new one */
+ tl[x].mptr = id3.mptr;
+ tl[x].mcnt = id3.mcnt;
+ /* if no active ref, see if we can replace in env */
+ if (!tl[x].mref) {
+ unsigned i;
+ pthread_mutex_lock(&env->me_rpmutex);
+ i = mdb_mid3l_search(el, tl[x].mid);
+ if (el[i].mref == 1) {
+ /* just us, replace it */
+ munmap(el[i].mptr, el[i].mcnt * env->me_psize);
+ el[i].mptr = tl[x].mptr;
+ el[i].mcnt = tl[x].mcnt;
+ } else {
+ /* there are others, remove ourself */
+ el[i].mref--;
+ }
+ pthread_mutex_unlock(&env->me_rpmutex);
+ }
+ }
+ }
+ id3.mptr = tl[x].mptr;
+ id3.mcnt = tl[x].mcnt;
+ tl[x].mref++;
+ goto ok;
+ }
+
+notlocal:
+ if (tl[0].mid >= MDB_TRPAGE_MAX - txn->mt_rpcheck) {
+ unsigned i, y;
+ /* purge unref'd pages from our list and unref in env */
+ pthread_mutex_lock(&env->me_rpmutex);
+retry:
+ y = 0;
+ for (i=1; i<=tl[0].mid; i++) {
+ if (!tl[i].mref) {
+ if (!y) y = i;
+ /* tmp overflow pages don't go to env */
+ if (tl[i].mid & (MDB_RPAGE_CHUNK-1)) {
+ munmap(tl[i].mptr, tl[i].mcnt * env->me_psize);
+ continue;
+ }
+ x = mdb_mid3l_search(el, tl[i].mid);
+ el[x].mref--;
+ }
+ }
+ pthread_mutex_unlock(&env->me_rpmutex);
+ if (!y) {
+ /* we didn't find any unref'd chunks.
+ * if we're out of room, fail.
+ */
+ if (tl[0].mid >= MDB_TRPAGE_MAX)
+ return MDB_TXN_FULL;
+ /* otherwise, raise threshold for next time around
+ * and let this go.
+ */
+ txn->mt_rpcheck /= 2;
+ } else {
+ /* we found some unused; consolidate the list */
+ for (i=y+1; i<= tl[0].mid; i++)
+ if (tl[i].mref)
+ tl[y++] = tl[i];
+ tl[0].mid = y-1;
+ /* decrease the check threshold toward its original value */
+ if (!txn->mt_rpcheck)
+ txn->mt_rpcheck = 1;
+ while (txn->mt_rpcheck < tl[0].mid && txn->mt_rpcheck < MDB_TRPAGE_SIZE/2)
+ txn->mt_rpcheck *= 2;
+ }
+ }
+ if (tl[0].mid < MDB_TRPAGE_SIZE) {
+ id3.mref = 1;
+ if (id3.mid)
+ goto found;
+ /* don't map past last written page in read-only envs */
+ if ((env->me_flags & MDB_RDONLY) && pgno + MDB_RPAGE_CHUNK-1 > txn->mt_last_pgno)
+ id3.mcnt = txn->mt_last_pgno + 1 - pgno;
+ else
+ id3.mcnt = MDB_RPAGE_CHUNK;
+ len = id3.mcnt * env->me_psize;
+ id3.mid = pgno;
+
+ /* search for page in env */
+ pthread_mutex_lock(&env->me_rpmutex);
+ x = mdb_mid3l_search(el, pgno);
+ if (x <= el[0].mid && el[x].mid == pgno) {
+ id3.mptr = el[x].mptr;
+ id3.mcnt = el[x].mcnt;
+ /* check for overflow size */
+ p = (MDB_page *)((char *)id3.mptr + rem * env->me_psize);
+ if (IS_OVERFLOW(p) && p->mp_pages + rem > id3.mcnt) {
+ id3.mcnt = p->mp_pages + rem;
+ len = id3.mcnt * env->me_psize;
+ SET_OFF(off, pgno * env->me_psize);
+ MAP(rc, env, id3.mptr, len, off);
+ if (rc)
+ goto fail;
+ if (!el[x].mref) {
+ munmap(el[x].mptr, env->me_psize * el[x].mcnt);
+ el[x].mptr = id3.mptr;
+ el[x].mcnt = id3.mcnt;
+ } else {
+ id3.mid = pg0;
+ pthread_mutex_unlock(&env->me_rpmutex);
+ goto found;
+ }
+ }
+ el[x].mref++;
+ pthread_mutex_unlock(&env->me_rpmutex);
+ goto found;
+ }
+ if (el[0].mid >= MDB_ERPAGE_MAX - env->me_rpcheck) {
+ /* purge unref'd pages */
+ unsigned i, y = 0;
+ for (i=1; i<=el[0].mid; i++) {
+ if (!el[i].mref) {
+ if (!y) y = i;
+ munmap(el[i].mptr, env->me_psize * el[i].mcnt);
+ }
+ }
+ if (!y) {
+ if (retries) {
+ /* see if we can unref some local pages */
+ retries--;
+ id3.mid = 0;
+ goto retry;
+ }
+ if (el[0].mid >= MDB_ERPAGE_MAX) {
+ pthread_mutex_unlock(&env->me_rpmutex);
+ return MDB_MAP_FULL;
+ }
+ env->me_rpcheck /= 2;
+ } else {
+ for (i=y+1; i<= el[0].mid; i++)
+ if (el[i].mref)
+ el[y++] = el[i];
+ el[0].mid = y-1;
+ if (!env->me_rpcheck)
+ env->me_rpcheck = 1;
+ while (env->me_rpcheck < el[0].mid && env->me_rpcheck < MDB_ERPAGE_SIZE/2)
+ env->me_rpcheck *= 2;
+ }
+ }
+ SET_OFF(off, pgno * env->me_psize);
+ MAP(rc, env, id3.mptr, len, off);
+ if (rc) {
+fail:
+ pthread_mutex_unlock(&env->me_rpmutex);
+ return rc;
+ }
+ /* check for overflow size */
+ p = (MDB_page *)((char *)id3.mptr + rem * env->me_psize);
+ if (IS_OVERFLOW(p) && p->mp_pages + rem > id3.mcnt) {
+ id3.mcnt = p->mp_pages + rem;
+ munmap(id3.mptr, len);
+ len = id3.mcnt * env->me_psize;
+ MAP(rc, env, id3.mptr, len, off);
+ if (rc)
+ goto fail;
+ }
+ mdb_mid3l_insert(el, &id3);
+ pthread_mutex_unlock(&env->me_rpmutex);
+found:
+ mdb_mid3l_insert(tl, &id3);
+ } else {
+ return MDB_TXN_FULL;
+ }
+ok:
+ p = (MDB_page *)((char *)id3.mptr + rem * env->me_psize);
+#if MDB_DEBUG /* we don't need this check any more */
+ if (IS_OVERFLOW(p)) {
+ mdb_tassert(txn, p->mp_pages + rem <= id3.mcnt);
+ }
+#endif
+ *ret = p;
+ return MDB_SUCCESS;
+}
+#endif
+
+/** Find the address of the page corresponding to a given page number.
+ * @param[in] mc the cursor accessing the page.
+ * @param[in] pgno the page number for the page to retrieve.
+ * @param[out] ret address of a pointer where the page's address will be stored.
+ * @param[out] lvl dirty_list inheritance level of found page. 1=current txn, 0=mapped page.
+ * @return 0 on success, non-zero on failure.
+ */
+static int
+mdb_page_get(MDB_cursor *mc, pgno_t pgno, MDB_page **ret, int *lvl)
+{
+ MDB_txn *txn = mc->mc_txn;
MDB_page *p = NULL;
int level;
- if (! (txn->mt_flags & (MDB_TXN_RDONLY|MDB_TXN_WRITEMAP))) {
+ if (! (mc->mc_flags & (C_ORIG_RDONLY|C_WRITEMAP))) {
MDB_txn *tx2 = txn;
level = 1;
do {
@@ -5233,8 +5996,7 @@ mdb_page_get(MDB_txn *txn, pgno_t pgno, MDB_page **ret, int *lvl)
MDB_ID pn = pgno << 1;
x = mdb_midl_search(tx2->mt_spill_pgs, pn);
if (x <= tx2->mt_spill_pgs[0] && tx2->mt_spill_pgs[x] == pn) {
- p = (MDB_page *)(env->me_map + env->me_psize * pgno);
- goto done;
+ goto mapped;
}
}
if (dl[0].mid) {
@@ -5248,15 +6010,26 @@ mdb_page_get(MDB_txn *txn, pgno_t pgno, MDB_page **ret, int *lvl)
} while ((tx2 = tx2->mt_parent) != NULL);
}
- if (pgno < txn->mt_next_pgno) {
- level = 0;
- p = (MDB_page *)(env->me_map + env->me_psize * pgno);
- } else {
- DPRINTF(("page %"Z"u not found", pgno));
+ if (pgno >= txn->mt_next_pgno) {
+ DPRINTF(("page %"Yu" not found", pgno));
txn->mt_flags |= MDB_TXN_ERROR;
return MDB_PAGE_NOTFOUND;
}
+ level = 0;
+
+mapped:
+ {
+#ifdef MDB_VL32
+ int rc = mdb_rpage_get(txn, pgno, &p);
+ if (rc)
+ return rc;
+#else
+ MDB_env *env = txn->mt_env;
+ p = (MDB_page *)(env->me_map + env->me_psize * pgno);
+#endif
+ }
+
done:
*ret = p;
if (lvl)
@@ -5278,13 +6051,13 @@ mdb_page_search_root(MDB_cursor *mc, MDB_val *key, int flags)
MDB_node *node;
indx_t i;
- DPRINTF(("branch page %"Z"u has %u keys", mp->mp_pgno, NUMKEYS(mp)));
+ DPRINTF(("branch page %"Yu" has %u keys", mp->mp_pgno, NUMKEYS(mp)));
/* Don't assert on branch pages in the FreeDB. We can get here
* while in the process of rebalancing a FreeDB branch page; we must
* let that proceed. ITS#8336
*/
mdb_cassert(mc, !mc->mc_dbi || NUMKEYS(mp) > 1);
- DPRINTF(("found index 0 to page %"Z"u", NODEPGNO(NODEPTR(mp, 0))));
+ DPRINTF(("found index 0 to page %"Yu, NODEPGNO(NODEPTR(mp, 0))));
if (flags & (MDB_PS_FIRST|MDB_PS_LAST)) {
i = 0;
@@ -5308,7 +6081,7 @@ mdb_page_search_root(MDB_cursor *mc, MDB_val *key, int flags)
mdb_cassert(mc, i < NUMKEYS(mp));
node = NODEPTR(mp, i);
- if ((rc = mdb_page_get(mc->mc_txn, NODEPGNO(node), &mp, NULL)) != 0)
+ if ((rc = mdb_page_get(mc, NODEPGNO(node), &mp, NULL)) != 0)
return rc;
mc->mc_ki[mc->mc_top] = i;
@@ -5329,7 +6102,7 @@ mdb_page_search_root(MDB_cursor *mc, MDB_val *key, int flags)
return MDB_CORRUPTED;
}
- DPRINTF(("found leaf page %"Z"u for key [%s]", mp->mp_pgno,
+ DPRINTF(("found leaf page %"Yu" for key [%s]", mp->mp_pgno,
key ? DKEY(key) : "null"));
mc->mc_flags |= C_INITIALIZED;
mc->mc_flags &= ~C_EOF;
@@ -5350,7 +6123,7 @@ mdb_page_search_lowest(MDB_cursor *mc)
MDB_node *node = NODEPTR(mp, 0);
int rc;
- if ((rc = mdb_page_get(mc->mc_txn, NODEPGNO(node), &mp, NULL)) != 0)
+ if ((rc = mdb_page_get(mc, NODEPGNO(node), &mp, NULL)) != 0)
return rc;
mc->mc_ki[mc->mc_top] = 0;
@@ -5402,7 +6175,7 @@ mdb_page_search(MDB_cursor *mc, MDB_val *key, int flags)
return MDB_NOTFOUND;
if ((leaf->mn_flags & (F_DUPDATA|F_SUBDATA)) != F_SUBDATA)
return MDB_INCOMPATIBLE; /* not a named DB */
- rc = mdb_node_read(mc->mc_txn, leaf, &data);
+ rc = mdb_node_read(&mc2, leaf, &data);
if (rc)
return rc;
memcpy(&flags, ((char *) data.mv_data + offsetof(MDB_db, md_flags)),
@@ -5425,14 +6198,26 @@ mdb_page_search(MDB_cursor *mc, MDB_val *key, int flags)
}
mdb_cassert(mc, root > 1);
- if (!mc->mc_pg[0] || mc->mc_pg[0]->mp_pgno != root)
- if ((rc = mdb_page_get(mc->mc_txn, root, &mc->mc_pg[0], NULL)) != 0)
+ if (!mc->mc_pg[0] || mc->mc_pg[0]->mp_pgno != root) {
+#ifdef MDB_VL32
+ if (mc->mc_pg[0])
+ MDB_PAGE_UNREF(mc->mc_txn, mc->mc_pg[0]);
+#endif
+ if ((rc = mdb_page_get(mc, root, &mc->mc_pg[0], NULL)) != 0)
return rc;
+ }
+#ifdef MDB_VL32
+ {
+ int i;
+ for (i=1; i<mc->mc_snum; i++)
+ MDB_PAGE_UNREF(mc->mc_txn, mc->mc_pg[i]);
+ }
+#endif
mc->mc_snum = 1;
mc->mc_top = 0;
- DPRINTF(("db %d root page %"Z"u has flags 0x%X",
+ DPRINTF(("db %d root page %"Yu" has flags 0x%X",
DDBI(mc), root, mc->mc_pg[0]->mp_flags));
if (flags & MDB_PS_MODIFY) {
@@ -5457,7 +6242,7 @@ mdb_ovpage_free(MDB_cursor *mc, MDB_page *mp)
MDB_ID pn = pg << 1;
int rc;
- DPRINTF(("free ov page %"Z"u (%d)", pg, ovpages));
+ DPRINTF(("free ov page %"Yu" (%d)", pg, ovpages));
/* If the page is dirty or on the spill list we just acquired it,
* so we should give it back to our current free list, if any.
* Otherwise put it onto the list of pages we freed in this txn.
@@ -5498,7 +6283,7 @@ mdb_ovpage_free(MDB_cursor *mc, MDB_page *mp)
j = ++(dl[0].mid);
dl[j] = ix; /* Unsorted. OK when MDB_TXN_ERROR. */
txn->mt_flags |= MDB_TXN_ERROR;
- return MDB_CORRUPTED;
+ return MDB_PROBLEM;
}
}
txn->mt_dirty_room++;
@@ -5523,18 +6308,22 @@ release:
}
/** Return the data associated with a given node.
- * @param[in] txn The transaction for this operation.
+ * @param[in] mc The cursor for this operation.
* @param[in] leaf The node being read.
* @param[out] data Updated to point to the node's data.
* @return 0 on success, non-zero on failure.
*/
static int
-mdb_node_read(MDB_txn *txn, MDB_node *leaf, MDB_val *data)
+mdb_node_read(MDB_cursor *mc, MDB_node *leaf, MDB_val *data)
{
MDB_page *omp; /* overflow page */
pgno_t pgno;
int rc;
+ if (MC_OVPG(mc)) {
+ MDB_PAGE_UNREF(mc->mc_txn, MC_OVPG(mc));
+ MC_SET_OVPG(mc, NULL);
+ }
if (!F_ISSET(leaf->mn_flags, F_BIGDATA)) {
data->mv_size = NODEDSZ(leaf);
data->mv_data = NODEDATA(leaf);
@@ -5545,11 +6334,12 @@ mdb_node_read(MDB_txn *txn, MDB_node *leaf, MDB_val *data)
*/
data->mv_size = NODEDSZ(leaf);
memcpy(&pgno, NODEDATA(leaf), sizeof(pgno));
- if ((rc = mdb_page_get(txn, pgno, &omp, NULL)) != 0) {
- DPRINTF(("read overflow page %"Z"u failed", pgno));
+ if ((rc = mdb_page_get(mc, pgno, &omp, NULL)) != 0) {
+ DPRINTF(("read overflow page %"Yu" failed", pgno));
return rc;
}
data->mv_data = METADATA(omp);
+ MC_SET_OVPG(mc, omp);
return MDB_SUCCESS;
}
@@ -5560,7 +6350,7 @@ mdb_get(MDB_txn *txn, MDB_dbi dbi,
{
MDB_cursor mc;
MDB_xcursor mx;
- int exact = 0;
+ int exact = 0, rc;
DKBUF;
DPRINTF(("===> get db %u key [%s]", dbi, DKEY(key)));
@@ -5572,7 +6362,12 @@ mdb_get(MDB_txn *txn, MDB_dbi dbi,
return MDB_BAD_TXN;
mdb_cursor_init(&mc, txn, dbi, &mx);
- return mdb_cursor_set(&mc, key, data, MDB_SET, &exact);
+ rc = mdb_cursor_set(&mc, key, data, MDB_SET, &exact);
+ /* unref all the pages when MDB_VL32 - caller must copy the data
+ * before doing anything else
+ */
+ MDB_CURSOR_UNREF(&mc, 1);
+ return rc;
}
/** Find a sibling for a page.
@@ -5589,13 +6384,19 @@ mdb_cursor_sibling(MDB_cursor *mc, int move_right)
int rc;
MDB_node *indx;
MDB_page *mp;
+#ifdef MDB_VL32
+ MDB_page *op;
+#endif
if (mc->mc_snum < 2) {
return MDB_NOTFOUND; /* root has no siblings */
}
+#ifdef MDB_VL32
+ op = mc->mc_pg[mc->mc_top];
+#endif
mdb_cursor_pop(mc);
- DPRINTF(("parent page is page %"Z"u, index %u",
+ DPRINTF(("parent page is page %"Yu", index %u",
mc->mc_pg[mc->mc_top]->mp_pgno, mc->mc_ki[mc->mc_top]));
if (move_right ? (mc->mc_ki[mc->mc_top] + 1u >= NUMKEYS(mc->mc_pg[mc->mc_top]))
@@ -5618,8 +6419,10 @@ mdb_cursor_sibling(MDB_cursor *mc, int move_right)
}
mdb_cassert(mc, IS_BRANCH(mc->mc_pg[mc->mc_top]));
+ MDB_PAGE_UNREF(mc->mc_txn, op);
+
indx = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]);
- if ((rc = mdb_page_get(mc->mc_txn, NODEPGNO(indx), &mp, NULL)) != 0) {
+ if ((rc = mdb_page_get(mc, NODEPGNO(indx), &mp, NULL)) != 0) {
/* mc will be inconsistent if caller does mc_snum++ as above */
mc->mc_flags &= ~(C_INITIALIZED|C_EOF);
return rc;
@@ -5640,11 +6443,12 @@ mdb_cursor_next(MDB_cursor *mc, MDB_val *key, MDB_val *data, MDB_cursor_op op)
MDB_node *leaf;
int rc;
- if (mc->mc_flags & C_EOF) {
+ if ((mc->mc_flags & C_EOF) ||
+ ((mc->mc_flags & C_DEL) && op == MDB_NEXT_DUP)) {
return MDB_NOTFOUND;
}
-
- mdb_cassert(mc, mc->mc_flags & C_INITIALIZED);
+ if (!(mc->mc_flags & C_INITIALIZED))
+ return mdb_cursor_first(mc, key, data);
mp = mc->mc_pg[mc->mc_top];
@@ -5659,6 +6463,9 @@ mdb_cursor_next(MDB_cursor *mc, MDB_val *key, MDB_val *data, MDB_cursor_op op)
return rc;
}
}
+ else {
+ MDB_CURSOR_UNREF(&mc->mc_xcursor->mx_cursor, 0);
+ }
} else {
mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED|C_EOF);
if (op == MDB_NEXT_DUP)
@@ -5666,7 +6473,7 @@ mdb_cursor_next(MDB_cursor *mc, MDB_val *key, MDB_val *data, MDB_cursor_op op)
}
}
- DPRINTF(("cursor_next: top page is %"Z"u in cursor %p",
+ DPRINTF(("cursor_next: top page is %"Yu" in cursor %p",
mdb_dbg_pgno(mp), (void *) mc));
if (mc->mc_flags & C_DEL) {
mc->mc_flags ^= C_DEL;
@@ -5680,12 +6487,12 @@ mdb_cursor_next(MDB_cursor *mc, MDB_val *key, MDB_val *data, MDB_cursor_op op)
return rc;
}
mp = mc->mc_pg[mc->mc_top];
- DPRINTF(("next page is %"Z"u, key index %u", mp->mp_pgno, mc->mc_ki[mc->mc_top]));
+ DPRINTF(("next page is %"Yu", key index %u", mp->mp_pgno, mc->mc_ki[mc->mc_top]));
} else
mc->mc_ki[mc->mc_top]++;
skip:
- DPRINTF(("==> cursor points to page %"Z"u with %u keys, key index %u",
+ DPRINTF(("==> cursor points to page %"Yu" with %u keys, key index %u",
mdb_dbg_pgno(mp), NUMKEYS(mp), mc->mc_ki[mc->mc_top]));
if (IS_LEAF2(mp)) {
@@ -5701,7 +6508,7 @@ skip:
mdb_xcursor_init1(mc, leaf);
}
if (data) {
- if ((rc = mdb_node_read(mc->mc_txn, leaf, data)) != MDB_SUCCESS)
+ if ((rc = mdb_node_read(mc, leaf, data)) != MDB_SUCCESS)
return rc;
if (F_ISSET(leaf->mn_flags, F_DUPDATA)) {
@@ -5723,7 +6530,12 @@ mdb_cursor_prev(MDB_cursor *mc, MDB_val *key, MDB_val *data, MDB_cursor_op op)
MDB_node *leaf;
int rc;
- mdb_cassert(mc, mc->mc_flags & C_INITIALIZED);
+ if (!(mc->mc_flags & C_INITIALIZED)) {
+ rc = mdb_cursor_last(mc, key, data);
+ if (rc)
+ return rc;
+ mc->mc_ki[mc->mc_top]++;
+ }
mp = mc->mc_pg[mc->mc_top];
@@ -5740,6 +6552,9 @@ mdb_cursor_prev(MDB_cursor *mc, MDB_val *key, MDB_val *data, MDB_cursor_op op)
return rc;
}
}
+ else {
+ MDB_CURSOR_UNREF(&mc->mc_xcursor->mx_cursor, 0);
+ }
} else {
mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED|C_EOF);
if (op == MDB_PREV_DUP)
@@ -5747,7 +6562,7 @@ mdb_cursor_prev(MDB_cursor *mc, MDB_val *key, MDB_val *data, MDB_cursor_op op)
}
}
- DPRINTF(("cursor_prev: top page is %"Z"u in cursor %p",
+ DPRINTF(("cursor_prev: top page is %"Yu" in cursor %p",
mdb_dbg_pgno(mp), (void *) mc));
mc->mc_flags &= ~(C_EOF|C_DEL);
@@ -5759,11 +6574,13 @@ mdb_cursor_prev(MDB_cursor *mc, MDB_val *key, MDB_val *data, MDB_cursor_op op)
}
mp = mc->mc_pg[mc->mc_top];
mc->mc_ki[mc->mc_top] = NUMKEYS(mp) - 1;
- DPRINTF(("prev page is %"Z"u, key index %u", mp->mp_pgno, mc->mc_ki[mc->mc_top]));
+ DPRINTF(("prev page is %"Yu", key index %u", mp->mp_pgno, mc->mc_ki[mc->mc_top]));
} else
mc->mc_ki[mc->mc_top]--;
- DPRINTF(("==> cursor points to page %"Z"u with %u keys, key index %u",
+ mc->mc_flags &= ~C_EOF;
+
+ DPRINTF(("==> cursor points to page %"Yu" with %u keys, key index %u",
mdb_dbg_pgno(mp), NUMKEYS(mp), mc->mc_ki[mc->mc_top]));
if (IS_LEAF2(mp)) {
@@ -5779,7 +6596,7 @@ mdb_cursor_prev(MDB_cursor *mc, MDB_val *key, MDB_val *data, MDB_cursor_op op)
mdb_xcursor_init1(mc, leaf);
}
if (data) {
- if ((rc = mdb_node_read(mc->mc_txn, leaf, data)) != MDB_SUCCESS)
+ if ((rc = mdb_node_read(mc, leaf, data)) != MDB_SUCCESS)
return rc;
if (F_ISSET(leaf->mn_flags, F_DUPDATA)) {
@@ -5806,8 +6623,10 @@ mdb_cursor_set(MDB_cursor *mc, MDB_val *key, MDB_val *data,
if (key->mv_size == 0)
return MDB_BAD_VALSIZE;
- if (mc->mc_xcursor)
+ if (mc->mc_xcursor) {
+ MDB_CURSOR_UNREF(&mc->mc_xcursor->mx_cursor, 0);
mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED|C_EOF);
+ }
/* See if we're already on the right page */
if (mc->mc_flags & C_INITIALIZED) {
@@ -5873,6 +6692,7 @@ mdb_cursor_set(MDB_cursor *mc, MDB_val *key, MDB_val *data,
}
}
rc = 0;
+ mc->mc_flags &= ~C_EOF;
goto set2;
}
}
@@ -5961,25 +6781,23 @@ set1:
} else if (op == MDB_GET_BOTH || op == MDB_GET_BOTH_RANGE) {
MDB_val olddata;
MDB_cmp_func *dcmp;
- if ((rc = mdb_node_read(mc->mc_txn, leaf, &olddata)) != MDB_SUCCESS)
+ if ((rc = mdb_node_read(mc, leaf, &olddata)) != MDB_SUCCESS)
return rc;
dcmp = mc->mc_dbx->md_dcmp;
-#if UINT_MAX < SIZE_MAX
- if (dcmp == mdb_cmp_int && olddata.mv_size == sizeof(size_t))
+ if (NEED_CMP_CLONG(dcmp, olddata.mv_size))
dcmp = mdb_cmp_clong;
-#endif
rc = dcmp(data, &olddata);
if (rc) {
if (op == MDB_GET_BOTH || rc > 0)
return MDB_NOTFOUND;
rc = 0;
- *data = olddata;
}
+ *data = olddata;
} else {
if (mc->mc_xcursor)
mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED|C_EOF);
- if ((rc = mdb_node_read(mc->mc_txn, leaf, data)) != MDB_SUCCESS)
+ if ((rc = mdb_node_read(mc, leaf, data)) != MDB_SUCCESS)
return rc;
}
}
@@ -5999,8 +6817,10 @@ mdb_cursor_first(MDB_cursor *mc, MDB_val *key, MDB_val *data)
int rc;
MDB_node *leaf;
- if (mc->mc_xcursor)
+ if (mc->mc_xcursor) {
+ MDB_CURSOR_UNREF(&mc->mc_xcursor->mx_cursor, 0);
mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED|C_EOF);
+ }
if (!(mc->mc_flags & C_INITIALIZED) || mc->mc_top) {
rc = mdb_page_search(mc, NULL, MDB_PS_FIRST);
@@ -6028,7 +6848,7 @@ mdb_cursor_first(MDB_cursor *mc, MDB_val *key, MDB_val *data)
if (rc)
return rc;
} else {
- if ((rc = mdb_node_read(mc->mc_txn, leaf, data)) != MDB_SUCCESS)
+ if ((rc = mdb_node_read(mc, leaf, data)) != MDB_SUCCESS)
return rc;
}
}
@@ -6043,8 +6863,10 @@ mdb_cursor_last(MDB_cursor *mc, MDB_val *key, MDB_val *data)
int rc;
MDB_node *leaf;
- if (mc->mc_xcursor)
+ if (mc->mc_xcursor) {
+ MDB_CURSOR_UNREF(&mc->mc_xcursor->mx_cursor, 0);
mc->mc_xcursor->mx_cursor.mc_flags &= ~(C_INITIALIZED|C_EOF);
+ }
if (!(mc->mc_flags & C_EOF)) {
@@ -6073,7 +6895,7 @@ mdb_cursor_last(MDB_cursor *mc, MDB_val *key, MDB_val *data)
if (rc)
return rc;
} else {
- if ((rc = mdb_node_read(mc->mc_txn, leaf, data)) != MDB_SUCCESS)
+ if ((rc = mdb_node_read(mc, leaf, data)) != MDB_SUCCESS)
return rc;
}
}
@@ -6119,7 +6941,7 @@ mdb_cursor_get(MDB_cursor *mc, MDB_val *key, MDB_val *data,
if (F_ISSET(leaf->mn_flags, F_DUPDATA)) {
rc = mdb_cursor_get(&mc->mc_xcursor->mx_cursor, data, NULL, MDB_GET_CURRENT);
} else {
- rc = mdb_node_read(mc->mc_txn, leaf, data);
+ rc = mdb_node_read(mc, leaf, data);
}
}
}
@@ -6169,10 +6991,7 @@ mdb_cursor_get(MDB_cursor *mc, MDB_val *key, MDB_val *data,
rc = MDB_INCOMPATIBLE;
break;
}
- if (!(mc->mc_flags & C_INITIALIZED))
- rc = mdb_cursor_first(mc, key, data);
- else
- rc = mdb_cursor_next(mc, key, data, MDB_NEXT_DUP);
+ rc = mdb_cursor_next(mc, key, data, MDB_NEXT_DUP);
if (rc == MDB_SUCCESS) {
if (mc->mc_xcursor->mx_cursor.mc_flags & C_INITIALIZED) {
MDB_cursor *mx;
@@ -6187,24 +7006,38 @@ fetchm:
}
}
break;
+ case MDB_PREV_MULTIPLE:
+ if (data == NULL) {
+ rc = EINVAL;
+ break;
+ }
+ if (!(mc->mc_db->md_flags & MDB_DUPFIXED)) {
+ rc = MDB_INCOMPATIBLE;
+ break;
+ }
+ if (!(mc->mc_flags & C_INITIALIZED))
+ rc = mdb_cursor_last(mc, key, data);
+ else
+ rc = MDB_SUCCESS;
+ if (rc == MDB_SUCCESS) {
+ MDB_cursor *mx = &mc->mc_xcursor->mx_cursor;
+ if (mx->mc_flags & C_INITIALIZED) {
+ rc = mdb_cursor_sibling(mx, 0);
+ if (rc == MDB_SUCCESS)
+ goto fetchm;
+ } else {
+ rc = MDB_NOTFOUND;
+ }
+ }
+ break;
case MDB_NEXT:
case MDB_NEXT_DUP:
case MDB_NEXT_NODUP:
- if (!(mc->mc_flags & C_INITIALIZED))
- rc = mdb_cursor_first(mc, key, data);
- else
- rc = mdb_cursor_next(mc, key, data, op);
+ rc = mdb_cursor_next(mc, key, data, op);
break;
case MDB_PREV:
case MDB_PREV_DUP:
case MDB_PREV_NODUP:
- if (!(mc->mc_flags & C_INITIALIZED)) {
- rc = mdb_cursor_last(mc, key, data);
- if (rc)
- break;
- mc->mc_flags |= C_INITIALIZED;
- mc->mc_ki[mc->mc_top]++;
- }
rc = mdb_cursor_prev(mc, key, data, op);
break;
case MDB_FIRST:
@@ -6225,7 +7058,7 @@ fetchm:
MDB_node *leaf = NODEPTR(mc->mc_pg[mc->mc_top], mc->mc_ki[mc->mc_top]);
if (!F_ISSET(leaf->mn_flags, F_DUPDATA)) {
MDB_GET_KEY(leaf, key);
- rc = mdb_node_read(mc->mc_txn, leaf, data);
+ rc = mdb_node_read(mc, leaf, data);
break;
}
}
@@ -6487,10 +7320,8 @@ more:
if (flags == MDB_CURRENT)
goto current;
dcmp = mc->mc_dbx->md_dcmp;
-#if UINT_MAX < SIZE_MAX
- if (dcmp == mdb_cmp_int && olddata.mv_size == sizeof(size_t))
+ if (NEED_CMP_CLONG(dcmp, olddata.mv_size))
dcmp = mdb_cmp_clong;
-#endif
/* does data match? */
if (!dcmp(data, &olddata)) {
if (flags & (MDB_NODUPDATA|MDB_APPENDDUP))
@@ -6609,7 +7440,7 @@ current:
int level, ovpages, dpages = OVPAGES(data->mv_size, env->me_psize);
memcpy(&pg, olddata.mv_data, sizeof(pg));
- if ((rc2 = mdb_page_get(mc->mc_txn, pg, &omp, &level)) != 0)
+ if ((rc2 = mdb_page_get(mc, pg, &omp, &level)) != 0)
return rc2;
ovpages = omp->mp_pages;
@@ -6641,8 +7472,13 @@ current:
/* Note - this page is already counted in parent's dirty_room */
rc2 = mdb_mid2l_insert(mc->mc_txn->mt_u.dirty_list, &id2);
mdb_cassert(mc, rc2 == 0);
+ /* Currently we make the page look as with put() in the
+ * parent txn, in case the user peeks at MDB_RESERVEd
+ * or unused parts. Some users treat ovpages specially.
+ */
if (!(flags & MDB_RESERVE)) {
- /* Copy end of page, adjusting alignment so
+ /* Skip the part where LMDB will put *data.
+ * Copy end of page, adjusting alignment so
* compiler may copy words instead of bytes.
*/
off = (PAGEHDRSZ + data->mv_size) & -sizeof(size_t);
@@ -6728,7 +7564,7 @@ new_sub:
*/
if (do_sub) {
int xflags, new_dupdata;
- size_t ecount;
+ mdb_size_t ecount;
put_sub:
xdata.mv_size = 0;
xdata.mv_data = "";
@@ -6810,7 +7646,7 @@ put_sub:
return rc;
bad_sub:
if (rc == MDB_KEYEXIST) /* should not happen, we deleted that item */
- rc = MDB_CORRUPTED;
+ rc = MDB_PROBLEM;
}
mc->mc_txn->mt_flags |= MDB_TXN_ERROR;
return rc;
@@ -6910,7 +7746,7 @@ mdb_cursor_del(MDB_cursor *mc, unsigned int flags)
pgno_t pg;
memcpy(&pg, NODEDATA(leaf), sizeof(pg));
- if ((rc = mdb_page_get(mc->mc_txn, pg, &omp, NULL)) ||
+ if ((rc = mdb_page_get(mc, pg, &omp, NULL)) ||
(rc = mdb_ovpage_free(mc, omp)))
goto fail;
}
@@ -6939,7 +7775,7 @@ mdb_page_new(MDB_cursor *mc, uint32_t flags, int num, MDB_page **mp)
if ((rc = mdb_page_alloc(mc, num, &np)))
return rc;
- DPRINTF(("allocated new mpage %"Z"u, page size %u",
+ DPRINTF(("allocated new mpage %"Yu", page size %u",
np->mp_pgno, mc->mc_txn->mt_env->me_psize));
np->mp_flags = flags | P_DIRTY;
np->mp_lower = (PAGEHDRSZ-PAGEBASE);
@@ -7039,7 +7875,7 @@ mdb_node_add(MDB_cursor *mc, indx_t indx,
mdb_cassert(mc, mp->mp_upper >= mp->mp_lower);
- DPRINTF(("add to %s %spage %"Z"u index %i, data size %"Z"u key size %"Z"u [%s]",
+ DPRINTF(("add to %s %spage %"Yu" index %i, data size %"Z"u key size %"Z"u [%s]",
IS_LEAF(mp) ? "leaf" : "branch",
IS_SUBP(mp) ? "sub-" : "",
mdb_dbg_pgno(mp), indx, data ? data->mv_size : 0,
@@ -7080,7 +7916,7 @@ mdb_node_add(MDB_cursor *mc, indx_t indx,
goto full;
if ((rc = mdb_page_new(mc, P_OVERFLOW, ovpages, &ofp)))
return rc;
- DPRINTF(("allocated overflow page %"Z"u", ofp->mp_pgno));
+ DPRINTF(("allocated overflow page %"Yu, ofp->mp_pgno));
flags |= F_BIGDATA;
goto update;
} else {
@@ -7137,7 +7973,7 @@ update:
return MDB_SUCCESS;
full:
- DPRINTF(("not enough room in page %"Z"u, got %u ptrs",
+ DPRINTF(("not enough room in page %"Yu", got %u ptrs",
mdb_dbg_pgno(mp), NUMKEYS(mp)));
DPRINTF(("upper-lower = %u - %u = %"Z"d", mp->mp_upper,mp->mp_lower,room));
DPRINTF(("node size = %"Z"u", node_size));
@@ -7160,7 +7996,7 @@ mdb_node_del(MDB_cursor *mc, int ksize)
MDB_node *node;
char *base;
- DPRINTF(("delete node %u on %s page %"Z"u", indx,
+ DPRINTF(("delete node %u on %s page %"Yu, indx,
IS_LEAF(mp) ? "leaf" : "branch", mdb_dbg_pgno(mp)));
numkeys = NUMKEYS(mp);
mdb_cassert(mc, indx < numkeys);
@@ -7269,7 +8105,8 @@ mdb_xcursor_init0(MDB_cursor *mc)
mx->mx_cursor.mc_dbflag = &mx->mx_dbflag;
mx->mx_cursor.mc_snum = 0;
mx->mx_cursor.mc_top = 0;
- mx->mx_cursor.mc_flags = C_SUB;
+ MC_SET_OVPG(&mx->mx_cursor, NULL);
+ mx->mx_cursor.mc_flags = C_SUB | (mc->mc_flags & (C_ORIG_RDONLY|C_WRITEMAP));
mx->mx_dbx.md_name.mv_size = 0;
mx->mx_dbx.md_name.mv_data = NULL;
mx->mx_dbx.md_cmp = mc->mc_dbx->md_dcmp;
@@ -7288,12 +8125,12 @@ mdb_xcursor_init1(MDB_cursor *mc, MDB_node *node)
{
MDB_xcursor *mx = mc->mc_xcursor;
+ mx->mx_cursor.mc_flags &= C_SUB|C_ORIG_RDONLY|C_WRITEMAP;
if (node->mn_flags & F_SUBDATA) {
memcpy(&mx->mx_db, NODEDATA(node), sizeof(MDB_db));
mx->mx_cursor.mc_pg[0] = 0;
mx->mx_cursor.mc_snum = 0;
mx->mx_cursor.mc_top = 0;
- mx->mx_cursor.mc_flags = C_SUB;
} else {
MDB_page *fp = NODEDATA(node);
mx->mx_db.md_pad = 0;
@@ -7306,7 +8143,7 @@ mdb_xcursor_init1(MDB_cursor *mc, MDB_node *node)
COPY_PGNO(mx->mx_db.md_root, fp->mp_pgno);
mx->mx_cursor.mc_snum = 1;
mx->mx_cursor.mc_top = 0;
- mx->mx_cursor.mc_flags = C_INITIALIZED|C_SUB;
+ mx->mx_cursor.mc_flags |= C_INITIALIZED;
mx->mx_cursor.mc_pg[0] = fp;
mx->mx_cursor.mc_ki[0] = 0;
if (mc->mc_db->md_flags & MDB_DUPFIXED) {
@@ -7316,13 +8153,11 @@ mdb_xcursor_init1(MDB_cursor *mc, MDB_node *node)
mx->mx_db.md_flags |= MDB_INTEGERKEY;
}
}
- DPRINTF(("Sub-db -%u root page %"Z"u", mx->mx_cursor.mc_dbi,
+ DPRINTF(("Sub-db -%u root page %"Yu, mx->mx_cursor.mc_dbi,
mx->mx_db.md_root));
mx->mx_dbflag = DB_VALID|DB_USRVALID|DB_DIRTY; /* DB_DIRTY guides mdb_cursor_touch */
-#if UINT_MAX < SIZE_MAX
- if (mx->mx_dbx.md_cmp == mdb_cmp_int && mx->mx_db.md_pad == sizeof(size_t))
+ if (NEED_CMP_CLONG(mx->mx_dbx.md_cmp, mx->mx_db.md_pad))
mx->mx_dbx.md_cmp = mdb_cmp_clong;
-#endif
}
@@ -7345,7 +8180,7 @@ mdb_xcursor_init2(MDB_cursor *mc, MDB_xcursor *src_mx, int new_dupdata)
mx->mx_cursor.mc_flags |= C_INITIALIZED;
mx->mx_cursor.mc_ki[0] = 0;
mx->mx_dbflag = DB_VALID|DB_USRVALID|DB_DIRTY; /* DB_DIRTY guides mdb_cursor_touch */
-#if UINT_MAX < SIZE_MAX
+#if UINT_MAX < MDB_SIZE_MAX /* matches mdb_xcursor_init1:NEED_CMP_CLONG() */
mx->mx_dbx.md_cmp = src_mx->mx_dbx.md_cmp;
#endif
} else if (!(mx->mx_cursor.mc_flags & C_INITIALIZED)) {
@@ -7353,7 +8188,7 @@ mdb_xcursor_init2(MDB_cursor *mc, MDB_xcursor *src_mx, int new_dupdata)
}
mx->mx_db = src_mx->mx_db;
mx->mx_cursor.mc_pg[0] = src_mx->mx_cursor.mc_pg[0];
- DPRINTF(("Sub-db -%u root page %"Z"u", mx->mx_cursor.mc_dbi,
+ DPRINTF(("Sub-db -%u root page %"Yu, mx->mx_cursor.mc_dbi,
mx->mx_db.md_root));
}
@@ -7372,7 +8207,8 @@ mdb_cursor_init(MDB_cursor *mc, MDB_txn *txn, MDB_dbi dbi, MDB_xcursor *mx)
mc->mc_top = 0;
mc->mc_pg[0] = 0;
mc->mc_ki[0] = 0;
- mc->mc_flags = 0;
+ MC_SET_OVPG(mc, NULL);
+ mc->mc_flags = txn->mt_flags & (C_ORIG_RDONLY|C_WRITEMAP);
if (txn->mt_dbs[dbi].md_flags & MDB_DUPSORT) {
mdb_tassert(txn, mx != NULL);
mc->mc_xcursor = mx;
@@ -7437,7 +8273,7 @@ mdb_cursor_renew(MDB_txn *txn, MDB_cursor *mc)
/* Return the count of duplicate data items for the current key */
int
-mdb_cursor_count(MDB_cursor *mc, size_t *countp)
+mdb_cursor_count(MDB_cursor *mc, mdb_size_t *countp)
{
MDB_node *leaf;
@@ -7471,6 +8307,9 @@ mdb_cursor_count(MDB_cursor *mc, size_t *countp)
void
mdb_cursor_close(MDB_cursor *mc)
{
+ if (mc) {
+ MDB_CURSOR_UNREF(mc, 0);
+ }
if (mc && !mc->mc_backup) {
/* remove from txn, if tracked */
if ((mc->mc_flags & C_UNTRACK) && mc->mc_txn->mt_cursors) {
@@ -7522,7 +8361,7 @@ mdb_update_key(MDB_cursor *mc, MDB_val *key)
char kbuf2[DKBUF_MAXKEYSIZE*2+1];
k2.mv_data = NODEKEY(node);
k2.mv_size = node->mn_ksize;
- DPRINTF(("update key %u (ofs %u) [%s] to [%s] on page %"Z"u",
+ DPRINTF(("update key %u (ofs %u) [%s] to [%s] on page %"Yu,
indx, ptr,
mdb_dkey(&k2, kbuf2),
DKEY(key),
@@ -7670,7 +8509,7 @@ mdb_node_move(MDB_cursor *csrc, MDB_cursor *cdst, int fromleft)
return rc;
}
- DPRINTF(("moving %s node %u [%s] on page %"Z"u to node %u on page %"Z"u",
+ DPRINTF(("moving %s node %u [%s] on page %"Yu" to node %u on page %"Yu,
IS_LEAF(csrc->mc_pg[csrc->mc_top]) ? "leaf" : "branch",
csrc->mc_ki[csrc->mc_top],
DKEY(&key),
@@ -7764,7 +8603,7 @@ mdb_node_move(MDB_cursor *csrc, MDB_cursor *cdst, int fromleft)
key.mv_size = NODEKSZ(srcnode);
key.mv_data = NODEKEY(srcnode);
}
- DPRINTF(("update separator for source page %"Z"u to [%s]",
+ DPRINTF(("update separator for source page %"Yu" to [%s]",
csrc->mc_pg[csrc->mc_top]->mp_pgno, DKEY(&key)));
mdb_cursor_copy(csrc, &mn);
mn.mc_snum--;
@@ -7795,7 +8634,7 @@ mdb_node_move(MDB_cursor *csrc, MDB_cursor *cdst, int fromleft)
key.mv_size = NODEKSZ(srcnode);
key.mv_data = NODEKEY(srcnode);
}
- DPRINTF(("update separator for destination page %"Z"u to [%s]",
+ DPRINTF(("update separator for destination page %"Yu" to [%s]",
cdst->mc_pg[cdst->mc_top]->mp_pgno, DKEY(&key)));
mdb_cursor_copy(cdst, &mn);
mn.mc_snum--;
@@ -7841,7 +8680,7 @@ mdb_page_merge(MDB_cursor *csrc, MDB_cursor *cdst)
psrc = csrc->mc_pg[csrc->mc_top];
pdst = cdst->mc_pg[cdst->mc_top];
- DPRINTF(("merging page %"Z"u into %"Z"u", psrc->mp_pgno, pdst->mp_pgno));
+ DPRINTF(("merging page %"Yu" into %"Yu, psrc->mp_pgno, pdst->mp_pgno));
mdb_cassert(csrc, csrc->mc_snum > 1); /* can't merge root page */
mdb_cassert(csrc, cdst->mc_snum > 1);
@@ -7898,7 +8737,7 @@ mdb_page_merge(MDB_cursor *csrc, MDB_cursor *cdst)
}
}
- DPRINTF(("dst page %"Z"u now has %u keys (%.1f%% filled)",
+ DPRINTF(("dst page %"Yu" now has %u keys (%.1f%% filled)",
pdst->mp_pgno, NUMKEYS(pdst),
(float)PAGEFILL(cdst->mc_txn->mt_env, pdst) / 10));
@@ -7986,6 +8825,7 @@ mdb_cursor_copy(const MDB_cursor *csrc, MDB_cursor *cdst)
cdst->mc_snum = csrc->mc_snum;
cdst->mc_top = csrc->mc_top;
cdst->mc_flags = csrc->mc_flags;
+ MC_SET_OVPG(cdst, MC_OVPG(csrc));
for (i=0; i<csrc->mc_snum; i++) {
cdst->mc_pg[i] = csrc->mc_pg[i];
@@ -8014,14 +8854,14 @@ mdb_rebalance(MDB_cursor *mc)
minkeys = 1;
thresh = FILL_THRESHOLD;
}
- DPRINTF(("rebalancing %s page %"Z"u (has %u keys, %.1f%% full)",
+ DPRINTF(("rebalancing %s page %"Yu" (has %u keys, %.1f%% full)",
IS_LEAF(mc->mc_pg[mc->mc_top]) ? "leaf" : "branch",
mdb_dbg_pgno(mc->mc_pg[mc->mc_top]), NUMKEYS(mc->mc_pg[mc->mc_top]),
(float)PAGEFILL(mc->mc_txn->mt_env, mc->mc_pg[mc->mc_top]) / 10));
if (PAGEFILL(mc->mc_txn->mt_env, mc->mc_pg[mc->mc_top]) >= thresh &&
NUMKEYS(mc->mc_pg[mc->mc_top]) >= minkeys) {
- DPRINTF(("no need to rebalance page %"Z"u, above fill threshold",
+ DPRINTF(("no need to rebalance page %"Yu", above fill threshold",
mdb_dbg_pgno(mc->mc_pg[mc->mc_top])));
return MDB_SUCCESS;
}
@@ -8069,7 +8909,7 @@ mdb_rebalance(MDB_cursor *mc)
if (rc)
return rc;
mc->mc_db->md_root = NODEPGNO(NODEPTR(mp, 0));
- rc = mdb_page_get(mc->mc_txn,mc->mc_db->md_root,&mc->mc_pg[0],NULL);
+ rc = mdb_page_get(mc, mc->mc_db->md_root, &mc->mc_pg[0], NULL);
if (rc)
return rc;
mc->mc_db->md_depth--;
@@ -8130,7 +8970,7 @@ mdb_rebalance(MDB_cursor *mc)
DPUTS("reading right neighbor");
mn.mc_ki[ptop]++;
node = NODEPTR(mc->mc_pg[ptop], mn.mc_ki[ptop]);
- rc = mdb_page_get(mc->mc_txn,NODEPGNO(node),&mn.mc_pg[mn.mc_top],NULL);
+ rc = mdb_page_get(mc, NODEPGNO(node), &mn.mc_pg[mn.mc_top], NULL);
if (rc)
return rc;
mn.mc_ki[mn.mc_top] = 0;
@@ -8142,7 +8982,7 @@ mdb_rebalance(MDB_cursor *mc)
DPUTS("reading left neighbor");
mn.mc_ki[ptop]--;
node = NODEPTR(mc->mc_pg[ptop], mn.mc_ki[ptop]);
- rc = mdb_page_get(mc->mc_txn,NODEPGNO(node),&mn.mc_pg[mn.mc_top],NULL);
+ rc = mdb_page_get(mc, NODEPGNO(node), &mn.mc_pg[mn.mc_top], NULL);
if (rc)
return rc;
mn.mc_ki[mn.mc_top] = NUMKEYS(mn.mc_pg[mn.mc_top]) - 1;
@@ -8150,7 +8990,7 @@ mdb_rebalance(MDB_cursor *mc)
fromleft = 1;
}
- DPRINTF(("found neighbor page %"Z"u (%u keys, %.1f%% full)",
+ DPRINTF(("found neighbor page %"Yu" (%u keys, %.1f%% full)",
mn.mc_pg[mn.mc_top]->mp_pgno, NUMKEYS(mn.mc_pg[mn.mc_top]),
(float)PAGEFILL(mc->mc_txn->mt_env, mn.mc_pg[mn.mc_top]) / 10));
@@ -8207,8 +9047,6 @@ mdb_cursor_del0(MDB_cursor *mc)
if (m3->mc_pg[mc->mc_top] == mp) {
if (m3->mc_ki[mc->mc_top] == ki) {
m3->mc_flags |= C_DEL;
- if (mc->mc_db->md_flags & MDB_DUPSORT)
- m3->mc_xcursor->mx_cursor.mc_flags &= ~C_INITIALIZED;
} else if (m3->mc_ki[mc->mc_top] > ki) {
m3->mc_ki[mc->mc_top]--;
}
@@ -8242,11 +9080,21 @@ mdb_cursor_del0(MDB_cursor *mc)
continue;
if (m3->mc_pg[mc->mc_top] == mp) {
/* if m3 points past last node in page, find next sibling */
- if (m3->mc_ki[mc->mc_top] >= nkeys) {
- rc = mdb_cursor_sibling(m3, 1);
- if (rc == MDB_NOTFOUND) {
- m3->mc_flags |= C_EOF;
- rc = MDB_SUCCESS;
+ if (m3->mc_ki[mc->mc_top] >= mc->mc_ki[mc->mc_top]) {
+ if (m3->mc_ki[mc->mc_top] >= nkeys) {
+ rc = mdb_cursor_sibling(m3, 1);
+ if (rc == MDB_NOTFOUND) {
+ m3->mc_flags |= C_EOF;
+ rc = MDB_SUCCESS;
+ continue;
+ }
+ }
+ if (mc->mc_db->md_flags & MDB_DUPSORT) {
+ MDB_node *node = NODEPTR(m3->mc_pg[m3->mc_top], m3->mc_ki[m3->mc_top]);
+ if (node->mn_flags & F_DUPDATA) {
+ mdb_xcursor_init1(m3, node);
+ m3->mc_xcursor->mx_cursor.mc_flags |= C_DEL;
+ }
}
}
}
@@ -8352,7 +9200,7 @@ mdb_page_split(MDB_cursor *mc, MDB_val *newkey, MDB_val *newdata, pgno_t newpgno
newindx = mc->mc_ki[mc->mc_top];
nkeys = NUMKEYS(mp);
- DPRINTF(("-----> splitting %s page %"Z"u and adding [%s] at index %i/%i",
+ DPRINTF(("-----> splitting %s page %"Yu" and adding [%s] at index %i/%i",
IS_LEAF(mp) ? "leaf" : "branch", mp->mp_pgno,
DKEY(newkey), mc->mc_ki[mc->mc_top], nkeys));
@@ -8360,7 +9208,7 @@ mdb_page_split(MDB_cursor *mc, MDB_val *newkey, MDB_val *newdata, pgno_t newpgno
if ((rc = mdb_page_new(mc, mp->mp_flags, 1, &rp)))
return rc;
rp->mp_pad = mp->mp_pad;
- DPRINTF(("new right sibling: page %"Z"u", rp->mp_pgno));
+ DPRINTF(("new right sibling: page %"Yu, rp->mp_pgno));
/* Usually when splitting the root page, the cursor
* height is 1. But when called from mdb_update_key,
@@ -8378,7 +9226,7 @@ mdb_page_split(MDB_cursor *mc, MDB_val *newkey, MDB_val *newdata, pgno_t newpgno
mc->mc_pg[0] = pp;
mc->mc_ki[0] = 0;
mc->mc_db->md_root = pp->mp_pgno;
- DPRINTF(("root split! new root = %"Z"u", pp->mp_pgno));
+ DPRINTF(("root split! new root = %"Yu, pp->mp_pgno));
new_root = mc->mc_db->md_depth++;
/* Add left (implicit) pointer. */
@@ -8395,7 +9243,7 @@ mdb_page_split(MDB_cursor *mc, MDB_val *newkey, MDB_val *newdata, pgno_t newpgno
ptop = 0;
} else {
ptop = mc->mc_top-1;
- DPRINTF(("parent branch page is %"Z"u", mc->mc_pg[ptop]->mp_pgno));
+ DPRINTF(("parent branch page is %"Yu, mc->mc_pg[ptop]->mp_pgno));
}
mdb_cursor_copy(mc, &mn);
@@ -8776,11 +9624,12 @@ mdb_put(MDB_txn *txn, MDB_dbi dbi,
#ifndef MDB_WBUF
#define MDB_WBUF (1024*1024)
#endif
+#define MDB_EOF 0x10 /**< #mdb_env_copyfd1() is done reading */
- /** State needed for a compacting copy. */
+ /** State needed for a double-buffering compacting copy. */
typedef struct mdb_copy {
pthread_mutex_t mc_mutex;
- pthread_cond_t mc_cond;
+ pthread_cond_t mc_cond; /**< Condition variable for #mc_new */
char *mc_wbuf[2];
char *mc_over[2];
MDB_env *mc_env;
@@ -8789,10 +9638,9 @@ typedef struct mdb_copy {
int mc_olen[2];
pgno_t mc_next_pgno;
HANDLE mc_fd;
- int mc_status;
- volatile int mc_new;
- int mc_toggle;
-
+ int mc_toggle; /**< Buffer number in provider */
+ int mc_new; /**< (0-2 buffers to write) | (#MDB_EOF at end) */
+ volatile int mc_error; /**< Error code, never cleared if set */
} mdb_copy;
/** Dedicated writer thread for compacting copy. */
@@ -8811,20 +9659,16 @@ mdb_env_copythr(void *arg)
#endif
pthread_mutex_lock(&my->mc_mutex);
- my->mc_new = 0;
- pthread_cond_signal(&my->mc_cond);
for(;;) {
while (!my->mc_new)
pthread_cond_wait(&my->mc_cond, &my->mc_mutex);
- if (my->mc_new < 0) {
- my->mc_new = 0;
+ if (my->mc_new == 0 + MDB_EOF) /* 0 buffers, just EOF */
break;
- }
- my->mc_new = 0;
wsize = my->mc_wlen[toggle];
ptr = my->mc_wbuf[toggle];
again:
- while (wsize > 0) {
+ rc = MDB_SUCCESS;
+ while (wsize > 0 && !my->mc_error) {
DO_WRITE(rc, my->mc_fd, ptr, wsize, len);
if (!rc) {
rc = ErrCode();
@@ -8840,8 +9684,7 @@ again:
}
}
if (rc) {
- my->mc_status = rc;
- break;
+ my->mc_error = rc;
}
/* If there's an overflow page tail, write it too */
if (my->mc_olen[toggle]) {
@@ -8852,39 +9695,41 @@ again:
}
my->mc_wlen[toggle] = 0;
toggle ^= 1;
+ /* Return the empty buffer to provider */
+ my->mc_new--;
pthread_cond_signal(&my->mc_cond);
}
- pthread_cond_signal(&my->mc_cond);
pthread_mutex_unlock(&my->mc_mutex);
return (THREAD_RET)0;
#undef DO_WRITE
}
- /** Tell the writer thread there's a buffer ready to write */
+ /** Give buffer and/or #MDB_EOF to writer thread, await unused buffer.
+ *
+ * @param[in] my control structure.
+ * @param[in] adjust (1 to hand off 1 buffer) | (MDB_EOF when ending).
+ */
static int ESECT
-mdb_env_cthr_toggle(mdb_copy *my, int st)
+mdb_env_cthr_toggle(mdb_copy *my, int adjust)
{
- int toggle = my->mc_toggle ^ 1;
pthread_mutex_lock(&my->mc_mutex);
- if (my->mc_status) {
- pthread_mutex_unlock(&my->mc_mutex);
- return my->mc_status;
- }
- while (my->mc_new == 1)
- pthread_cond_wait(&my->mc_cond, &my->mc_mutex);
- my->mc_new = st;
- my->mc_toggle = toggle;
+ my->mc_new += adjust;
pthread_cond_signal(&my->mc_cond);
+ while (my->mc_new & 2) /* both buffers in use */
+ pthread_cond_wait(&my->mc_cond, &my->mc_mutex);
pthread_mutex_unlock(&my->mc_mutex);
- return 0;
+
+ my->mc_toggle ^= (adjust & 1);
+ /* Both threads reset mc_wlen, to be safe from threading errors */
+ my->mc_wlen[my->mc_toggle] = 0;
+ return my->mc_error;
}
/** Depth-first tree traversal for compacting copy. */
static int ESECT
mdb_env_cwalk(mdb_copy *my, pgno_t *pg, int flags)
{
- MDB_cursor mc;
- MDB_txn *txn = my->mc_txn;
+ MDB_cursor mc = {0};
MDB_node *ni;
MDB_page *mo, *mp, *leaf;
char *buf, *ptr;
@@ -8896,10 +9741,10 @@ mdb_env_cwalk(mdb_copy *my, pgno_t *pg, int flags)
return MDB_SUCCESS;
mc.mc_snum = 1;
- mc.mc_top = 0;
- mc.mc_txn = txn;
+ mc.mc_txn = my->mc_txn;
+ mc.mc_flags = my->mc_txn->mt_flags & (C_ORIG_RDONLY|C_WRITEMAP);
- rc = mdb_page_get(my->mc_txn, *pg, &mc.mc_pg[0], NULL);
+ rc = mdb_page_get(&mc, *pg, &mc.mc_pg[0], NULL);
if (rc)
return rc;
rc = mdb_page_search_root(&mc, NULL, MDB_PS_FIRST);
@@ -8943,7 +9788,8 @@ mdb_env_cwalk(mdb_copy *my, pgno_t *pg, int flags)
}
memcpy(&pg, NODEDATA(ni), sizeof(pg));
- rc = mdb_page_get(txn, pg, &omp, NULL);
+ memcpy(NODEDATA(ni), &my->mc_next_pgno, sizeof(pgno_t));
+ rc = mdb_page_get(&mc, pg, &omp, NULL);
if (rc)
goto done;
if (my->mc_wlen[toggle] >= MDB_WBUF) {
@@ -8965,7 +9811,6 @@ mdb_env_cwalk(mdb_copy *my, pgno_t *pg, int flags)
goto done;
toggle = my->mc_toggle;
}
- memcpy(NODEDATA(ni), &mo->mp_pgno, sizeof(pgno_t));
} else if (ni->mn_flags & F_SUBDATA) {
MDB_db db;
@@ -8994,7 +9839,7 @@ mdb_env_cwalk(mdb_copy *my, pgno_t *pg, int flags)
again:
ni = NODEPTR(mp, mc.mc_ki[mc.mc_top]);
pg = NODEPGNO(ni);
- rc = mdb_page_get(txn, pg, &mp, NULL);
+ rc = mdb_page_get(&mc, pg, &mp, NULL);
if (rc)
goto done;
mc.mc_top++;
@@ -9043,47 +9888,56 @@ mdb_env_copyfd1(MDB_env *env, HANDLE fd)
{
MDB_meta *mm;
MDB_page *mp;
- mdb_copy my;
+ mdb_copy my = {0};
MDB_txn *txn = NULL;
pthread_t thr;
- int rc;
+ pgno_t root, new_root;
+ int rc = MDB_SUCCESS;
#ifdef _WIN32
- my.mc_mutex = CreateMutex(NULL, FALSE, NULL);
- my.mc_cond = CreateEvent(NULL, FALSE, FALSE, NULL);
+ if (!(my.mc_mutex = CreateMutex(NULL, FALSE, NULL)) ||
+ !(my.mc_cond = CreateEvent(NULL, FALSE, FALSE, NULL))) {
+ rc = ErrCode();
+ goto done;
+ }
my.mc_wbuf[0] = _aligned_malloc(MDB_WBUF*2, env->me_os_psize);
- if (my.mc_wbuf[0] == NULL)
- return errno;
+ if (my.mc_wbuf[0] == NULL) {
+ /* _aligned_malloc() sets errno, but we use Windows error codes */
+ rc = ERROR_NOT_ENOUGH_MEMORY;
+ goto done;
+ }
#else
- pthread_mutex_init(&my.mc_mutex, NULL);
- pthread_cond_init(&my.mc_cond, NULL);
+ if ((rc = pthread_mutex_init(&my.mc_mutex, NULL)) != 0)
+ return rc;
+ if ((rc = pthread_cond_init(&my.mc_cond, NULL)) != 0)
+ goto done2;
#ifdef HAVE_MEMALIGN
my.mc_wbuf[0] = memalign(env->me_os_psize, MDB_WBUF*2);
- if (my.mc_wbuf[0] == NULL)
- return errno;
+ if (my.mc_wbuf[0] == NULL) {
+ rc = errno;
+ goto done;
+ }
#else
- rc = posix_memalign((void **)&my.mc_wbuf[0], env->me_os_psize, MDB_WBUF*2);
- if (rc)
- return rc;
+ {
+ void *p;
+ if ((rc = posix_memalign(&p, env->me_os_psize, MDB_WBUF*2)) != 0)
+ goto done;
+ my.mc_wbuf[0] = p;
+ }
#endif
#endif
memset(my.mc_wbuf[0], 0, MDB_WBUF*2);
my.mc_wbuf[1] = my.mc_wbuf[0] + MDB_WBUF;
- my.mc_wlen[0] = 0;
- my.mc_wlen[1] = 0;
- my.mc_olen[0] = 0;
- my.mc_olen[1] = 0;
my.mc_next_pgno = NUM_METAS;
- my.mc_status = 0;
- my.mc_new = 1;
- my.mc_toggle = 0;
my.mc_env = env;
my.mc_fd = fd;
- THREAD_CREATE(thr, mdb_env_copythr, &my);
+ rc = THREAD_CREATE(thr, mdb_env_copythr, &my);
+ if (rc)
+ goto done;
rc = mdb_txn_begin(env, NULL, MDB_RDONLY, &txn);
if (rc)
- return rc;
+ goto finish;
mp = (MDB_page *)my.mc_wbuf[0];
memset(mp, 0, NUM_METAS * env->me_psize);
@@ -9099,57 +9953,64 @@ mdb_env_copyfd1(MDB_env *env, HANDLE fd)
*(MDB_meta *)METADATA(mp) = *mm;
mm = (MDB_meta *)METADATA(mp);
- /* Count the number of free pages, subtract from lastpg to find
- * number of active pages
- */
- {
+ /* Set metapage 1 with current main DB */
+ root = new_root = txn->mt_dbs[MAIN_DBI].md_root;
+ if (root != P_INVALID) {
+ /* Count free pages + freeDB pages. Subtract from last_pg
+ * to find the new last_pg, which also becomes the new root.
+ */
MDB_ID freecount = 0;
MDB_cursor mc;
MDB_val key, data;
mdb_cursor_init(&mc, txn, FREE_DBI, NULL);
while ((rc = mdb_cursor_get(&mc, &key, &data, MDB_NEXT)) == 0)
freecount += *(MDB_ID *)data.mv_data;
+ if (rc != MDB_NOTFOUND)
+ goto finish;
freecount += txn->mt_dbs[FREE_DBI].md_branch_pages +
txn->mt_dbs[FREE_DBI].md_leaf_pages +
txn->mt_dbs[FREE_DBI].md_overflow_pages;
- /* Set metapage 1 */
- mm->mm_last_pg = txn->mt_next_pgno - freecount - 1;
+ new_root = txn->mt_next_pgno - 1 - freecount;
+ mm->mm_last_pg = new_root;
mm->mm_dbs[MAIN_DBI] = txn->mt_dbs[MAIN_DBI];
- if (mm->mm_last_pg > NUM_METAS-1) {
- mm->mm_dbs[MAIN_DBI].md_root = mm->mm_last_pg;
- mm->mm_txnid = 1;
- } else {
- mm->mm_dbs[MAIN_DBI].md_root = P_INVALID;
- }
+ mm->mm_dbs[MAIN_DBI].md_root = new_root;
+ } else {
+ /* When the DB is empty, handle it specially to
+ * fix any breakage like page leaks from ITS#8174.
+ */
+ mm->mm_dbs[MAIN_DBI].md_flags = txn->mt_dbs[MAIN_DBI].md_flags;
+ }
+ if (root != P_INVALID || mm->mm_dbs[MAIN_DBI].md_flags) {
+ mm->mm_txnid = 1; /* use metapage 1 */
}
+
my.mc_wlen[0] = env->me_psize * NUM_METAS;
my.mc_txn = txn;
- pthread_mutex_lock(&my.mc_mutex);
- while(my.mc_new)
- pthread_cond_wait(&my.mc_cond, &my.mc_mutex);
- pthread_mutex_unlock(&my.mc_mutex);
- rc = mdb_env_cwalk(&my, &txn->mt_dbs[MAIN_DBI].md_root, 0);
- if (rc == MDB_SUCCESS && my.mc_wlen[my.mc_toggle])
- rc = mdb_env_cthr_toggle(&my, 1);
- mdb_env_cthr_toggle(&my, -1);
- pthread_mutex_lock(&my.mc_mutex);
- while(my.mc_new)
- pthread_cond_wait(&my.mc_cond, &my.mc_mutex);
- pthread_mutex_unlock(&my.mc_mutex);
- THREAD_FINISH(thr);
+ rc = mdb_env_cwalk(&my, &root, 0);
+ if (rc == MDB_SUCCESS && root != new_root) {
+ rc = MDB_INCOMPATIBLE; /* page leak or corrupt DB */
+ }
+finish:
+ if (rc)
+ my.mc_error = rc;
+ mdb_env_cthr_toggle(&my, 1 | MDB_EOF);
+ rc = THREAD_FINISH(thr);
mdb_txn_abort(txn);
+
+done:
#ifdef _WIN32
- CloseHandle(my.mc_cond);
- CloseHandle(my.mc_mutex);
- _aligned_free(my.mc_wbuf[0]);
+ if (my.mc_wbuf[0]) _aligned_free(my.mc_wbuf[0]);
+ if (my.mc_cond) CloseHandle(my.mc_cond);
+ if (my.mc_mutex) CloseHandle(my.mc_mutex);
#else
+ free(my.mc_wbuf[0]);
pthread_cond_destroy(&my.mc_cond);
+done2:
pthread_mutex_destroy(&my.mc_mutex);
- free(my.mc_wbuf[0]);
#endif
- return rc;
+ return rc ? rc : my.mc_error;
}
/** Copy environment as-is. */
@@ -9159,7 +10020,7 @@ mdb_env_copyfd0(MDB_env *env, HANDLE fd)
MDB_txn *txn = NULL;
mdb_mutexref_t wmutex = NULL;
int rc;
- size_t wsize, w3;
+ mdb_size_t wsize, w3;
char *ptr;
#ifdef _WIN32
DWORD len, w2;
@@ -9220,7 +10081,7 @@ mdb_env_copyfd0(MDB_env *env, HANDLE fd)
w3 = txn->mt_next_pgno * env->me_psize;
{
- size_t fsize = 0;
+ mdb_size_t fsize = 0;
if ((rc = mdb_fsize(env->me_fd, &fsize)))
goto leave;
if (w3 > fsize)
@@ -9659,11 +10520,19 @@ mdb_drop0(MDB_cursor *mc, int subs)
/* DUPSORT sub-DBs have no ovpages/DBs. Omit scanning leaves.
* This also avoids any P_LEAF2 pages, which have no nodes.
+ * Also if the DB doesn't have sub-DBs and has no overflow
+ * pages, omit scanning leaves.
*/
- if (mc->mc_flags & C_SUB)
+ if ((mc->mc_flags & C_SUB) ||
+ (!subs && !mc->mc_db->md_overflow_pages))
mdb_cursor_pop(mc);
mdb_cursor_copy(mc, &mx);
+#ifdef MDB_VL32
+ /* bump refcount for mx's pages */
+ for (i=0; i<mc->mc_snum; i++)
+ mdb_page_get(&mx, mc->mc_pg[i]->mp_pgno, &mx.mc_pg[i], NULL);
+#endif
while (mc->mc_snum > 0) {
MDB_page *mp = mc->mc_pg[mc->mc_top];
unsigned n = NUMKEYS(mp);
@@ -9674,7 +10543,7 @@ mdb_drop0(MDB_cursor *mc, int subs)
MDB_page *omp;
pgno_t pg;
memcpy(&pg, NODEDATA(ni), sizeof(pg));
- rc = mdb_page_get(txn, pg, &omp, NULL);
+ rc = mdb_page_get(mc, pg, &omp, NULL);
if (rc != 0)
goto done;
mdb_cassert(mc, IS_OVERFLOW(omp));
@@ -9682,6 +10551,9 @@ mdb_drop0(MDB_cursor *mc, int subs)
pg, omp->mp_pages);
if (rc)
goto done;
+ mc->mc_db->md_overflow_pages -= omp->mp_pages;
+ if (!mc->mc_db->md_overflow_pages && !subs)
+ break;
} else if (subs && (ni->mn_flags & F_SUBDATA)) {
mdb_xcursor_init1(mc, ni);
rc = mdb_drop0(&mc->mc_xcursor->mx_cursor, 0);
@@ -9689,6 +10561,8 @@ mdb_drop0(MDB_cursor *mc, int subs)
goto done;
}
}
+ if (!subs && !mc->mc_db->md_overflow_pages)
+ goto pop;
} else {
if ((rc = mdb_midl_need(&txn->mt_free_pgs, n)) != 0)
goto done;
@@ -9710,6 +10584,7 @@ mdb_drop0(MDB_cursor *mc, int subs)
/* no more siblings, go back to beginning
* of previous level.
*/
+pop:
mdb_cursor_pop(mc);
mc->mc_ki[0] = 0;
for (i=1; i<mc->mc_snum; i++) {
@@ -9723,6 +10598,8 @@ mdb_drop0(MDB_cursor *mc, int subs)
done:
if (rc)
txn->mt_flags |= MDB_TXN_ERROR;
+ /* drop refcount for mx's pages */
+ MDB_CURSOR_UNREF(&mx, 0);
} else if (rc == MDB_NOTFOUND) {
rc = MDB_SUCCESS;
}
@@ -9842,7 +10719,7 @@ mdb_reader_list(MDB_env *env, MDB_msg_func *func, void *ctx)
if (mr[i].mr_pid) {
txnid_t txnid = mr[i].mr_txnid;
sprintf(buf, txnid == (txnid_t)-1 ?
- "%10d %"Z"x -\n" : "%10d %"Z"x %"Z"u\n",
+ "%10d %"Z"x -\n" : "%10d %"Z"x %"Yu"\n",
(int)mr[i].mr_pid, (size_t)mr[i].mr_tid, txnid);
if (first) {
first = 0;
@@ -9947,7 +10824,7 @@ mdb_reader_check0(MDB_env *env, int rlocked, int *dead)
}
for (; j<rdrs; j++)
if (mr[j].mr_pid == pid) {
- DPRINTF(("clear stale reader pid %u txn %"Z"d",
+ DPRINTF(("clear stale reader pid %u txn %"Yd,
(unsigned) pid, mr[j].mr_txnid));
mr[j].mr_pid = 0;
count++;
diff --git a/libraries/liblmdb/mdb_copy.1 b/libraries/liblmdb/mdb_copy.1
index 258affb..4387ac3 100644
--- a/libraries/liblmdb/mdb_copy.1
+++ b/libraries/liblmdb/mdb_copy.1
@@ -36,6 +36,7 @@ Write the library version number to the standard output, and exit.
Compact while copying. Only current data pages will be copied; freed
or unused pages will be omitted from the copy. This option will
slow down the backup process as it is more CPU-intensive.
+Currently it fails if the environment has suffered a page leak.
.TP
.BR \-n
Open LDMB environment(s) which do not use subdirectories.
diff --git a/libraries/liblmdb/mdb_dump.c b/libraries/liblmdb/mdb_dump.c
index 17def6b..13084a2 100644
--- a/libraries/liblmdb/mdb_dump.c
+++ b/libraries/liblmdb/mdb_dump.c
@@ -20,11 +20,7 @@
#include <signal.h>
#include "lmdb.h"
-#ifdef _WIN32
-#define Z "I"
-#else
-#define Z "z"
-#endif
+#define Yu MDB_PRIy(u)
#define PRINT 1
static int mode;
@@ -115,7 +111,7 @@ static int dumpit(MDB_txn *txn, MDB_dbi dbi, char *name)
if (name)
printf("database=%s\n", name);
printf("type=btree\n");
- printf("mapsize=%" Z "u\n", info.me_mapsize);
+ printf("mapsize=%"Yu"\n", info.me_mapsize);
if (info.me_mapaddr)
printf("mapaddr=%p\n", info.me_mapaddr);
printf("maxreaders=%u\n", info.me_maxreaders);
diff --git a/libraries/liblmdb/mdb_load.c b/libraries/liblmdb/mdb_load.c
index 053cc88..73dfe8c 100644
--- a/libraries/liblmdb/mdb_load.c
+++ b/libraries/liblmdb/mdb_load.c
@@ -25,7 +25,7 @@ static int mode;
static char *subname = NULL;
-static size_t lineno;
+static mdb_size_t lineno;
static int version;
static int flags;
@@ -38,11 +38,7 @@ static MDB_envinfo info;
static MDB_val kbuf, dbuf;
-#ifdef _WIN32
-#define Z "I"
-#else
-#define Z "z"
-#endif
+#define Yu MDB_PRIy(u)
#define STRLENOF(s) (sizeof(s)-1)
@@ -73,7 +69,7 @@ static void readhdr(void)
if (!strncmp(dbuf.mv_data, "VERSION=", STRLENOF("VERSION="))) {
version=atoi((char *)dbuf.mv_data+STRLENOF("VERSION="));
if (version > 3) {
- fprintf(stderr, "%s: line %" Z "d: unsupported VERSION %d\n",
+ fprintf(stderr, "%s: line %"Yu": unsupported VERSION %d\n",
prog, lineno, version);
exit(EXIT_FAILURE);
}
@@ -83,7 +79,7 @@ static void readhdr(void)
if (!strncmp((char *)dbuf.mv_data+STRLENOF("FORMAT="), "print", STRLENOF("print")))
mode |= PRINT;
else if (strncmp((char *)dbuf.mv_data+STRLENOF("FORMAT="), "bytevalue", STRLENOF("bytevalue"))) {
- fprintf(stderr, "%s: line %" Z "d: unsupported FORMAT %s\n",
+ fprintf(stderr, "%s: line %"Yu": unsupported FORMAT %s\n",
prog, lineno, (char *)dbuf.mv_data+STRLENOF("FORMAT="));
exit(EXIT_FAILURE);
}
@@ -94,7 +90,7 @@ static void readhdr(void)
subname = strdup((char *)dbuf.mv_data+STRLENOF("database="));
} else if (!strncmp(dbuf.mv_data, "type=", STRLENOF("type="))) {
if (strncmp((char *)dbuf.mv_data+STRLENOF("type="), "btree", STRLENOF("btree"))) {
- fprintf(stderr, "%s: line %" Z "d: unsupported type %s\n",
+ fprintf(stderr, "%s: line %"Yu": unsupported type %s\n",
prog, lineno, (char *)dbuf.mv_data+STRLENOF("type="));
exit(EXIT_FAILURE);
}
@@ -104,7 +100,7 @@ static void readhdr(void)
if (ptr) *ptr = '\0';
i = sscanf((char *)dbuf.mv_data+STRLENOF("mapaddr="), "%p", &info.me_mapaddr);
if (i != 1) {
- fprintf(stderr, "%s: line %" Z "d: invalid mapaddr %s\n",
+ fprintf(stderr, "%s: line %"Yu": invalid mapaddr %s\n",
prog, lineno, (char *)dbuf.mv_data+STRLENOF("mapaddr="));
exit(EXIT_FAILURE);
}
@@ -112,9 +108,10 @@ static void readhdr(void)
int i;
ptr = memchr(dbuf.mv_data, '\n', dbuf.mv_size);
if (ptr) *ptr = '\0';
- i = sscanf((char *)dbuf.mv_data+STRLENOF("mapsize="), "%" Z "u", &info.me_mapsize);
+ i = sscanf((char *)dbuf.mv_data+STRLENOF("mapsize="),
+ "%" MDB_SCNy(u), &info.me_mapsize);
if (i != 1) {
- fprintf(stderr, "%s: line %" Z "d: invalid mapsize %s\n",
+ fprintf(stderr, "%s: line %"Yu": invalid mapsize %s\n",
prog, lineno, (char *)dbuf.mv_data+STRLENOF("mapsize="));
exit(EXIT_FAILURE);
}
@@ -124,7 +121,7 @@ static void readhdr(void)
if (ptr) *ptr = '\0';
i = sscanf((char *)dbuf.mv_data+STRLENOF("maxreaders="), "%u", &info.me_maxreaders);
if (i != 1) {
- fprintf(stderr, "%s: line %" Z "d: invalid maxreaders %s\n",
+ fprintf(stderr, "%s: line %"Yu": invalid maxreaders %s\n",
prog, lineno, (char *)dbuf.mv_data+STRLENOF("maxreaders="));
exit(EXIT_FAILURE);
}
@@ -140,12 +137,12 @@ static void readhdr(void)
if (!dbflags[i].bit) {
ptr = memchr(dbuf.mv_data, '=', dbuf.mv_size);
if (!ptr) {
- fprintf(stderr, "%s: line %" Z "d: unexpected format\n",
+ fprintf(stderr, "%s: line %"Yu": unexpected format\n",
prog, lineno);
exit(EXIT_FAILURE);
} else {
*ptr = '\0';
- fprintf(stderr, "%s: line %" Z "d: unrecognized keyword ignored: %s\n",
+ fprintf(stderr, "%s: line %"Yu": unrecognized keyword ignored: %s\n",
prog, lineno, (char *)dbuf.mv_data);
}
}
@@ -155,7 +152,7 @@ static void readhdr(void)
static void badend(void)
{
- fprintf(stderr, "%s: line %" Z "d: unexpected end of input\n",
+ fprintf(stderr, "%s: line %"Yu": unexpected end of input\n",
prog, lineno);
}
@@ -213,7 +210,7 @@ badend:
buf->mv_data = realloc(buf->mv_data, buf->mv_size*2);
if (!buf->mv_data) {
Eof = 1;
- fprintf(stderr, "%s: line %" Z "d: out of memory, line too long\n",
+ fprintf(stderr, "%s: line %"Yu": out of memory, line too long\n",
prog, lineno);
return EOF;
}
@@ -405,7 +402,7 @@ int main(int argc, char *argv[])
rc = readline(&data, &dbuf);
if (rc) {
- fprintf(stderr, "%s: line %" Z "d: failed to read key value\n", prog, lineno);
+ fprintf(stderr, "%s: line %"Yu": failed to read key value\n", prog, lineno);
goto txn_abort;
}
@@ -420,7 +417,7 @@ int main(int argc, char *argv[])
if (batch == 100) {
rc = mdb_txn_commit(txn);
if (rc) {
- fprintf(stderr, "%s: line %" Z "d: txn_commit: %s\n",
+ fprintf(stderr, "%s: line %"Yu": txn_commit: %s\n",
prog, lineno, mdb_strerror(rc));
goto env_close;
}
@@ -440,7 +437,7 @@ int main(int argc, char *argv[])
rc = mdb_txn_commit(txn);
txn = NULL;
if (rc) {
- fprintf(stderr, "%s: line %" Z "d: txn_commit: %s\n",
+ fprintf(stderr, "%s: line %"Yu": txn_commit: %s\n",
prog, lineno, mdb_strerror(rc));
goto env_close;
}
diff --git a/libraries/liblmdb/mdb_stat.c b/libraries/liblmdb/mdb_stat.c
index a5cda2f..0343a65 100644
--- a/libraries/liblmdb/mdb_stat.c
+++ b/libraries/liblmdb/mdb_stat.c
@@ -17,11 +17,8 @@
#include <unistd.h>
#include "lmdb.h"
-#ifdef _WIN32
-#define Z "I"
-#else
-#define Z "z"
-#endif
+#define Z MDB_FMT_Z
+#define Yu MDB_PRIy(u)
static void prstat(MDB_stat *ms)
{
@@ -29,10 +26,10 @@ static void prstat(MDB_stat *ms)
printf(" Page size: %u\n", ms->ms_psize);
#endif
printf(" Tree depth: %u\n", ms->ms_depth);
- printf(" Branch pages: %"Z"u\n", ms->ms_branch_pages);
- printf(" Leaf pages: %"Z"u\n", ms->ms_leaf_pages);
- printf(" Overflow pages: %"Z"u\n", ms->ms_overflow_pages);
- printf(" Entries: %"Z"u\n", ms->ms_entries);
+ printf(" Branch pages: %"Yu"\n", ms->ms_branch_pages);
+ printf(" Leaf pages: %"Yu"\n", ms->ms_leaf_pages);
+ printf(" Overflow pages: %"Yu"\n", ms->ms_overflow_pages);
+ printf(" Entries: %"Yu"\n", ms->ms_entries);
}
static void usage(char *prog)
@@ -125,11 +122,11 @@ int main(int argc, char *argv[])
(void)mdb_env_info(env, &mei);
printf("Environment Info\n");
printf(" Map address: %p\n", mei.me_mapaddr);
- printf(" Map size: %"Z"u\n", mei.me_mapsize);
+ printf(" Map size: %"Yu"\n", mei.me_mapsize);
printf(" Page size: %u\n", mst.ms_psize);
- printf(" Max pages: %"Z"u\n", mei.me_mapsize / mst.ms_psize);
- printf(" Number of pages used: %"Z"u\n", mei.me_last_pgno+1);
- printf(" Last transaction ID: %"Z"u\n", mei.me_last_txnid);
+ printf(" Max pages: %"Yu"\n", mei.me_mapsize / mst.ms_psize);
+ printf(" Number of pages used: %"Yu"\n", mei.me_last_pgno+1);
+ printf(" Last transaction ID: %"Yu"\n", mei.me_last_txnid);
printf(" Max readers: %u\n", mei.me_maxreaders);
printf(" Number of readers used: %u\n", mei.me_numreaders);
}
@@ -156,7 +153,7 @@ int main(int argc, char *argv[])
if (freinfo) {
MDB_cursor *cursor;
MDB_val key, data;
- size_t pages = 0, *iptr;
+ mdb_size_t pages = 0, *iptr;
printf("Freelist Status\n");
dbi = 0;
@@ -176,7 +173,7 @@ int main(int argc, char *argv[])
pages += *iptr;
if (freinfo > 1) {
char *bad = "";
- size_t pg, prev;
+ mdb_size_t pg, prev;
ssize_t i, j, span = 0;
j = *iptr++;
for (i = j, prev = 1; --i >= 0; ) {
@@ -187,20 +184,20 @@ int main(int argc, char *argv[])
pg += span;
for (; i >= span && iptr[i-span] == pg; span++, pg++) ;
}
- printf(" Transaction %"Z"u, %"Z"d pages, maxspan %"Z"d%s\n",
- *(size_t *)key.mv_data, j, span, bad);
+ printf(" Transaction %"Yu", %"Z"d pages, maxspan %"Z"d%s\n",
+ *(mdb_size_t *)key.mv_data, j, span, bad);
if (freinfo > 2) {
for (--j; j >= 0; ) {
pg = iptr[j];
for (span=1; --j >= 0 && iptr[j] == pg+span; span++) ;
- printf(span>1 ? " %9"Z"u[%"Z"d]\n" : " %9"Z"u\n",
+ printf(span>1 ? " %9"Yu"[%"Z"d]\n" : " %9"Yu"\n",
pg, span);
}
}
}
}
mdb_cursor_close(cursor);
- printf(" Free pages: %"Z"u\n", pages);
+ printf(" Free pages: %"Yu"\n", pages);
}
rc = mdb_open(txn, subname, 0, &dbi);
diff --git a/libraries/liblmdb/midl.c b/libraries/liblmdb/midl.c
index 5c6d841..9748d8d 100644
--- a/libraries/liblmdb/midl.c
+++ b/libraries/liblmdb/midl.c
@@ -3,7 +3,7 @@
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
- * Copyright 2000-2015 The OpenLDAP Foundation.
+ * Copyright 2000-2016 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -354,5 +354,67 @@ int mdb_mid2l_append( MDB_ID2L ids, MDB_ID2 *id )
return 0;
}
+#ifdef MDB_VL32
+unsigned mdb_mid3l_search( MDB_ID3L ids, MDB_ID id )
+{
+ /*
+ * binary search of id in ids
+ * if found, returns position of id
+ * if not found, returns first position greater than id
+ */
+ unsigned base = 0;
+ unsigned cursor = 1;
+ int val = 0;
+ unsigned n = (unsigned)ids[0].mid;
+
+ while( 0 < n ) {
+ unsigned pivot = n >> 1;
+ cursor = base + pivot + 1;
+ val = CMP( id, ids[cursor].mid );
+
+ if( val < 0 ) {
+ n = pivot;
+
+ } else if ( val > 0 ) {
+ base = cursor;
+ n -= pivot + 1;
+
+ } else {
+ return cursor;
+ }
+ }
+
+ if( val > 0 ) {
+ ++cursor;
+ }
+ return cursor;
+}
+
+int mdb_mid3l_insert( MDB_ID3L ids, MDB_ID3 *id )
+{
+ unsigned x, i;
+
+ x = mdb_mid3l_search( ids, id->mid );
+
+ if( x < 1 ) {
+ /* internal error */
+ return -2;
+ }
+
+ if ( x <= ids[0].mid && ids[x].mid == id->mid ) {
+ /* duplicate */
+ return -1;
+ }
+
+ /* insert id */
+ ids[0].mid++;
+ for (i=(unsigned)ids[0].mid; i>x; i--)
+ ids[i] = ids[i-1];
+ ids[x] = *id;
+
+ return 0;
+}
+#endif /* MDB_VL32 */
+
/** @} */
/** @} */
diff --git a/libraries/liblmdb/midl.h b/libraries/liblmdb/midl.h
index 2331e78..dc532c4 100644
--- a/libraries/liblmdb/midl.h
+++ b/libraries/liblmdb/midl.h
@@ -11,7 +11,7 @@
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
- * Copyright 2000-2015 The OpenLDAP Foundation.
+ * Copyright 2000-2016 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -26,7 +26,7 @@
#ifndef _MDB_MIDL_H_
#define _MDB_MIDL_H_
-#include <stddef.h>
+#include "lmdb.h"
#ifdef __cplusplus
extern "C" {
@@ -42,7 +42,7 @@ extern "C" {
/** A generic unsigned ID number. These were entryIDs in back-bdb.
* Preferably it should have the same size as a pointer.
*/
-typedef size_t MDB_ID;
+typedef mdb_size_t MDB_ID;
/** An IDL is an ID List, a sorted array of IDs. The first
* element of the array is a counter for how many actual
@@ -55,7 +55,11 @@ typedef MDB_ID *MDB_IDL;
/* IDL sizes - likely should be even bigger
* limiting factors: sizeof(ID), thread stack size
*/
+#ifdef MDB_VL32
+#define MDB_IDL_LOGN 14 /* DB_SIZE is 2^14, UM_SIZE is 2^15 */
+#else
#define MDB_IDL_LOGN 16 /* DB_SIZE is 2^16, UM_SIZE is 2^17 */
+#endif
#define MDB_IDL_DB_SIZE (1<<MDB_IDL_LOGN)
#define MDB_IDL_UM_SIZE (1<<(MDB_IDL_LOGN+1))
@@ -177,6 +181,20 @@ int mdb_mid2l_insert( MDB_ID2L ids, MDB_ID2 *id );
*/
int mdb_mid2l_append( MDB_ID2L ids, MDB_ID2 *id );
+#ifdef MDB_VL32
+typedef struct MDB_ID3 {
+ MDB_ID mid; /**< The ID */
+ void *mptr; /**< The pointer */
+ unsigned int mcnt; /**< Number of pages */
+ unsigned int mref; /**< Refcounter */
+} MDB_ID3;
+
+typedef MDB_ID3 *MDB_ID3L;
+
+unsigned mdb_mid3l_search( MDB_ID3L ids, MDB_ID id );
+int mdb_mid3l_insert( MDB_ID3L ids, MDB_ID3 *id );
+
+#endif /* MDB_VL32 */
/** @} */
/** @} */
#ifdef __cplusplus
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