nginx/src/os/win32/ngx_atomic.h


/*
 * Copyright (C) Igor Sysoev
 */


#ifndef _NGX_ATOMIC_H_INCLUDED_
#define _NGX_ATOMIC_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>


#define NGX_HAVE_ATOMIC_OPS   1


#define ngx_atomic_inc(p)       InterlockedIncrement((long *) p)


#if defined( __WATCOMC__ ) || defined( __BORLANDC__ ) || ( _MSC_VER >= 1300 )

/* the new SDK headers */

#define ngx_atomic_cmp_set(lock, old, set)                                    \
     (InterlockedCompareExchange((long *) lock, set, old) == old)

#else

/* the old MS VC6.0SP2 SDK headers */

#define ngx_atomic_cmp_set(lock, old, set)                                    \
     (InterlockedCompareExchange((void **) lock, (void *) set, (void *) old)  \
      == (void *) old)

#endif


void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin);

#define ngx_trylock(lock)  (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1))
#define ngx_unlock(lock)    *(lock) = 0


#endif /* _NGX_ATOMIC_H_INCLUDED_ */
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files 2004-09-28 16:34:51 +08:00
			`/*`
nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright 2004-09-30 00:00:49 +08:00			`* Copyright (C) Igor Sysoev`
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files 2004-09-28 16:34:51 +08:00			`*/`


nginx-0.0.7-2004-06-30-19:30:41 import 2004-06-30 23:30:41 +08:00			`#ifndef _NGX_ATOMIC_H_INCLUDED_`
			`#define _NGX_ATOMIC_H_INCLUDED_`


			`#include <ngx_config.h>`
			`#include <ngx_core.h>`


nginx-0.0.11-2004-09-22-20:18:21 import 2004-09-23 00:18:21 +08:00			`#define NGX_HAVE_ATOMIC_OPS 1`


nginx-0.0.7-2004-06-30-19:30:41 import 2004-06-30 23:30:41 +08:00			`#define ngx_atomic_inc(p) InterlockedIncrement((long *) p)`


nginx-0.1.5-RELEASE import ) Bugfix: on Solaris and Linux there may be too many "recvmsg() returned not enough data" alerts. ) Bugfix: there were the "writev() failed (22: Invalid argument)" errors on Solaris in proxy mode without sendfile. On other platforms that do not support sendfile at all the process got caught in an endless loop. ) Bugfix: segmentation fault on Solaris in proxy mode and using sendfile. ) Bugfix: segmentation fault on Solaris. ) Bugfix: on-line upgrade did not work on Linux. ) Bugfix: the ngx_http_autoindex_module module did not escape the spaces, the quotes, and the percent signs in the directory listing. ) Change: the decrease of the copy operations. ) Feature: the userid_p3p directive. 2004-11-11 22:07:14 +08:00			`#if defined( __WATCOMC__ ) \|\| defined( __BORLANDC__ ) \|\| ( _MSC_VER >= 1300 )`
nginx-0.0.7-2004-06-30-19:30:41 import 2004-06-30 23:30:41 +08:00
nginx-0.0.11-2004-09-22-20:18:21 import 2004-09-23 00:18:21 +08:00			`/* the new SDK headers */`

nginx-0.0.7-2004-06-30-19:30:41 import 2004-06-30 23:30:41 +08:00			`#define ngx_atomic_cmp_set(lock, old, set) \`
			`(InterlockedCompareExchange((long *) lock, set, old) == old)`

			`#else`

nginx-0.0.11-2004-09-22-20:18:21 import 2004-09-23 00:18:21 +08:00			`/* the old MS VC6.0SP2 SDK headers */`

nginx-0.0.7-2004-06-30-19:30:41 import 2004-06-30 23:30:41 +08:00			`#define ngx_atomic_cmp_set(lock, old, set) \`
			`(InterlockedCompareExchange((void *) lock, (void ) set, (void *) old) \`
			`== (void *) old)`

			`#endif`


			`void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin);`

			`#define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1))`
			`#define ngx_unlock(lock) *(lock) = 0`


			`#endif /* _NGX_ATOMIC_H_INCLUDED_ */`