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annotate src/os/win32/ngx_atomic.h @ 497:d7c90bb5ce83 release-0.1.23

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nginx-0.1.23-RELEASE import *) Feature: the ngx_http_ssi_filter_module and the ssi, ssi_silent_errors, and ssi_min_file_chunk directives. The 'echo var="HTTP_..." default=""' and 'echo var="REMOTE_ADDR"' commands are supported. *) Feature: the %request_time log parameter. *) Feature: if the request has no the "Host" header line, then the "proxy_preserve_host" directive set this header line to the first server name of the "server_name" directive. *) Bugfix: nginx could not be built on platforms different from i386, amd64, sparc, and ppc; the bug had appeared in 0.1.22. *) Bugfix: the ngx_http_autoindex_module now shows the information not about the symlink, but about file or directory it points to. *) Bugfix: the %apache_length parameter logged the negative length of the response header if the no response was transferred to a client.
author Igor Sysoev <igor@sysoev.ru>
date Tue, 01 Mar 2005 15:20:36 +0000
parents 975f62e77f02
children e48ebafc6939
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 #ifndef _NGX_ATOMIC_H_INCLUDED_
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8 #define _NGX_ATOMIC_H_INCLUDED_
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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15 #define NGX_HAVE_ATOMIC_OPS 1
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17 typedef int32_t ngx_atomic_int_t;
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18 typedef uint32_t ngx_atomic_uint_t;
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19 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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20 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1
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23 #define ngx_atomic_inc(p) InterlockedIncrement((long *) p)
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24 #define ngx_atomic_dec(p) InterlockedDecrement((long *) p)
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27 #if defined( __WATCOMC__ ) || defined( __BORLANDC__ ) || ( _MSC_VER >= 1300 )
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29 /* the new SDK headers */
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31 #define ngx_atomic_cmp_set(lock, old, set) \
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32 (InterlockedCompareExchange((long *) lock, set, old) == old)
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34 #else
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36 /* the old MS VC6.0SP2 SDK headers */
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38 #define ngx_atomic_cmp_set(lock, old, set) \
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39 (InterlockedCompareExchange((void **) lock, (void *) set, (void *) old) \
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40 == (void *) old)
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42 #endif
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45 void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin);
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47 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1))
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48 #define ngx_unlock(lock) *(lock) = 0
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51 #endif /* _NGX_ATOMIC_H_INCLUDED_ */