Mercurial > hg > nginx
view src/core/ngx_times.h @ 6517:657e029bac28
Thread pools: memory barriers in task completion notifications.
The ngx_thread_pool_done object isn't volatile, and at least some
compilers assume that it is permitted to reorder modifications of
volatile and non-volatile objects. Added appropriate ngx_memory_barrier()
calls to make sure all modifications will happen before the lock is released.
Reported by Mindaugas Rasiukevicius,
http://mailman.nginx.org/pipermail/nginx-devel/2016-April/008160.html.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Tue, 19 Apr 2016 17:18:28 +0300 |
parents | 777202558122 |
children | 76e7e20cda05 |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_TIMES_H_INCLUDED_ #define _NGX_TIMES_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> typedef struct { time_t sec; ngx_uint_t msec; ngx_int_t gmtoff; } ngx_time_t; void ngx_time_init(void); void ngx_time_update(void); void ngx_time_sigsafe_update(void); u_char *ngx_http_time(u_char *buf, time_t t); u_char *ngx_http_cookie_time(u_char *buf, time_t t); void ngx_gmtime(time_t t, ngx_tm_t *tp); time_t ngx_next_time(time_t when); #define ngx_next_time_n "mktime()" extern volatile ngx_time_t *ngx_cached_time; #define ngx_time() ngx_cached_time->sec #define ngx_timeofday() (ngx_time_t *) ngx_cached_time extern volatile ngx_str_t ngx_cached_err_log_time; extern volatile ngx_str_t ngx_cached_http_time; extern volatile ngx_str_t ngx_cached_http_log_time; extern volatile ngx_str_t ngx_cached_http_log_iso8601; extern volatile ngx_str_t ngx_cached_syslog_time; /* * milliseconds elapsed since epoch and truncated to ngx_msec_t, * used in event timers */ extern volatile ngx_msec_t ngx_current_msec; #endif /* _NGX_TIMES_H_INCLUDED_ */