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GCC 4.1 builtin atomic operations

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This commit is contained in:
Igor Sysoev 2009-11-25 17:34:35 +00:00
parent f215028477
commit 89d635fa5d
3 changed files with 46 additions and 9 deletions
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14
auto/cc/conf
View File

@ -105,7 +105,6 @@ fi
CFLAGS="$CFLAGS $NGX_CC_OPT"
if [ "$NGX_PLATFORM" != win32 ]; then
if test -n "$NGX_LD_OPT"; then
@ -125,6 +124,19 @@ if [ "$NGX_PLATFORM" != win32 ]; then
fi
fi
ngx_feature="gcc builtin atomic operations"
ngx_feature_name=NGX_HAVE_GCC_ATOMIC
ngx_feature_run=no
ngx_feature_incs=
ngx_feature_path=
ngx_feature_libs=
ngx_feature_test="long n;
__sync_bool_compare_and_swap(&n, 0, 1);
__sync_fetch_and_add(&n, 1);"
. auto/feature
ngx_feature="gcc variadic macros"
ngx_feature_name="NGX_HAVE_GCC_VARIADIC_MACROS"
ngx_feature_run=yes

4
auto/cc/gcc
View File

@ -90,7 +90,6 @@ case $CPU in
# build 32-bit UltraSparc binary
CPU_OPT="-m32"
CORE_LINK="$CORE_LINK -m32"
CC_AUX_FLAGS="$CC_AUX_FLAGS -m32"
NGX_CPU_CACHE_LINE=64
;;
@ -98,7 +97,6 @@ case $CPU in
# build 64-bit UltraSparc binary
CPU_OPT="-m64"
CORE_LINK="$CORE_LINK -m64"
CC_AUX_FLAGS="$CC_AUX_FLAGS -m64"
NGX_CPU_CACHE_LINE=64
;;
@ -108,12 +106,12 @@ case $CPU in
CPU_OPT="$CPU_OPT -falign-functions=32 -falign-labels=32"
CPU_OPT="$CPU_OPT -falign-loops=32 -falign-jumps=32"
CORE_LINK="$CORE_LINK -m64"
CC_AUX_FLAGS="$CC_AUX_FLAGS -m64"
NGX_CPU_CACHE_LINE=128
;;
esac
CC_AUX_FLAGS="$CC_AUX_FLAGS $CPU_OPT"
case "$NGX_GCC_VER" in
2.7*)

37
src/os/unix/ngx_atomic.h
View File

@ -60,10 +60,40 @@ typedef uint32_t ngx_atomic_uint_t;
typedef volatile ngx_atomic_uint_t ngx_atomic_t;
#else /* !(NGX_DARWIN) */
#elif (NGX_HAVE_GCC_ATOMIC)
/* GCC 4.1 builtin atomic operations */
#define NGX_HAVE_ATOMIC_OPS 1
typedef long ngx_atomic_int_t;
typedef unsigned long ngx_atomic_uint_t;
#if (NGX_PTR_SIZE == 8)
#define NGX_ATOMIC_T_LEN (sizeof("-9223372036854775808") - 1)
#else
#define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
#endif
typedef volatile ngx_atomic_uint_t ngx_atomic_t;
#if ( __i386__ || __i386 )
#define ngx_atomic_cmp_set(lock, old, set) \
__sync_bool_compare_and_swap(lock, old, set)
#define ngx_atomic_fetch_add(value, add) \
__sync_fetch_and_add(value, add)
#define ngx_memory_barrier() __sync_synchronize()
#if ( __i386__ || __i386 || __amd64__ || __amd64 )
#define ngx_cpu_pause() __asm__ ("pause")
#else
#define ngx_cpu_pause()
#endif
#elif ( __i386__ || __i386 )
typedef int32_t ngx_atomic_int_t;
typedef uint32_t ngx_atomic_uint_t;
@ -203,9 +233,6 @@ typedef volatile ngx_atomic_uint_t ngx_atomic_t;
#include "ngx_gcc_atomic_ppc.h"
#endif
#endif