annotate src/core/ngx_shmtx.h @ 644:ad25218fd14b NGINX_1_0_12

nginx 1.0.12 *) Feature: the "TLSv1.1" and "TLSv1.2" parameters of the "ssl_protocols" directive. *) Feature: the "if" SSI command supports captures in regular expressions. *) Bugfix: the "if" SSI command did not work inside the "block" command. *) Bugfix: in AIO error handling on FreeBSD. *) Bugfix: in the OpenSSL library initialization. *) Bugfix: the "worker_cpu_affinity" directive might not work. *) Bugfix: the "limit_conn_log_level" and "limit_req_log_level" directives might not work. *) Bugfix: the "read_ahead" directive might not work combined with "try_files" and "open_file_cache". *) Bugfix: the "proxy_cache_use_stale" directive with "error" parameter did not return answer from cache if there were no live upstreams. *) Bugfix: a segmentation fault might occur in a worker process if small time was used in the "inactive" parameter of the "proxy_cache_path" directive. *) Bugfix: responses from cache might hang. *) Bugfix: in error handling while connecting to a backend. Thanks to Piotr Sikora. *) Bugfix: in the "epoll" event method. Thanks to Yichun Zhang. *) Bugfix: the $sent_http_cache_control variable might contain a wrong value if the "expires" directive was used. Thanks to Yichun Zhang. *) Bugfix: the "limit_rate" directive did not allow to use full throughput, even if limit value was very high. *) Bugfix: the "sendfile_max_chunk" directive did not work, if the "limit_rate" directive was used. *) Bugfix: nginx could not be built on Solaris; the bug had appeared in 1.0.11. *) Bugfix: in the ngx_http_scgi_module. *) Bugfix: in the ngx_http_mp4_module.
author Igor Sysoev <http://sysoev.ru>
date Mon, 06 Feb 2012 00:00:00 +0400
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #ifndef _NGX_SHMTX_H_INCLUDED_
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9 #define _NGX_SHMTX_H_INCLUDED_
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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16 typedef struct {
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17 #if (NGX_HAVE_ATOMIC_OPS)
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18 ngx_atomic_t *lock;
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19 #if (NGX_HAVE_POSIX_SEM)
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20 ngx_uint_t semaphore;
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21 sem_t sem;
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22 #endif
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23 #else
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24 ngx_fd_t fd;
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25 u_char *name;
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26 #endif
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27 ngx_uint_t spin;
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28 } ngx_shmtx_t;
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31 ngx_int_t ngx_shmtx_create(ngx_shmtx_t *mtx, void *addr, u_char *name);
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32 void ngx_shmtx_destory(ngx_shmtx_t *mtx);
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33 ngx_uint_t ngx_shmtx_trylock(ngx_shmtx_t *mtx);
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34 void ngx_shmtx_lock(ngx_shmtx_t *mtx);
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35 void ngx_shmtx_unlock(ngx_shmtx_t *mtx);
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38 #endif /* _NGX_SHMTX_H_INCLUDED_ */