diff options
Diffstat (limited to 'src/core')
| -rw-r--r-- | src/core/ngx_cycle.c | 2 | ||||
| -rw-r--r-- | src/core/ngx_times.c | 82 | ||||
| -rw-r--r-- | src/core/ngx_times.h | 3 |
3 files changed, 76 insertions, 11 deletions
diff --git a/src/core/ngx_cycle.c b/src/core/ngx_cycle.c index cd9efbee7..cb551e945 100644 --- a/src/core/ngx_cycle.c +++ b/src/core/ngx_cycle.c @@ -63,7 +63,7 @@ ngx_init_cycle(ngx_cycle_t *old_cycle) tp = ngx_timeofday(); tp->sec = 0; - ngx_time_update(0, 0); + ngx_time_update(); log = old_cycle->log; diff --git a/src/core/ngx_times.c b/src/core/ngx_times.c index 3105beb47..50501246a 100644 --- a/src/core/ngx_times.c +++ b/src/core/ngx_times.c @@ -28,6 +28,17 @@ volatile ngx_str_t ngx_cached_err_log_time; volatile ngx_str_t ngx_cached_http_time; volatile ngx_str_t ngx_cached_http_log_time; +#if !(NGX_WIN32) + +/* + * locatime() and localtime_r() are not Async-Signal-Safe functions, therefore, + * they must not be called by a signal handler, so we use the cached + * GMT offset value. Fortunately the value is changed only two times a year. + */ + +static ngx_int_t cached_gmtoff; +#endif + static ngx_time_t cached_time[NGX_TIME_SLOTS]; static u_char cached_err_log_time[NGX_TIME_SLOTS] [sizeof("1970/09/28 12:00:00")]; @@ -50,15 +61,17 @@ ngx_time_init(void) ngx_cached_time = &cached_time[0]; - ngx_time_update(0, 0); + ngx_time_update(); } void -ngx_time_update(time_t sec, ngx_uint_t msec) +ngx_time_update(void) { u_char *p0, *p1, *p2; ngx_tm_t tm, gmt; + time_t sec; + ngx_uint_t msec; ngx_time_t *tp; struct timeval tv; @@ -66,12 +79,10 @@ ngx_time_update(time_t sec, ngx_uint_t msec) return; } - if (sec == 0) { - ngx_gettimeofday(&tv); + ngx_gettimeofday(&tv); - sec = tv.tv_sec; - msec = tv.tv_usec / 1000; - } + sec = tv.tv_sec; + msec = tv.tv_usec / 1000; ngx_current_msec = (ngx_msec_t) sec * 1000 + msec; @@ -112,12 +123,14 @@ ngx_time_update(time_t sec, ngx_uint_t msec) #elif (NGX_HAVE_GMTOFF) ngx_localtime(sec, &tm); - tp->gmtoff = (ngx_int_t) (tm.ngx_tm_gmtoff / 60); + cached_gmtoff = (ngx_int_t) (tm.ngx_tm_gmtoff / 60); + tp->gmtoff = cached_gmtoff; #else ngx_localtime(sec, &tm); - tp->gmtoff = ngx_timezone(tm.ngx_tm_isdst); + cached_gmtoff = ngx_timezone(tm.ngx_tm_isdst); + tp->gmtoff = cached_gmtoff; #endif @@ -151,6 +164,57 @@ ngx_time_update(time_t sec, ngx_uint_t msec) } +#if !(NGX_WIN32) + +void +ngx_time_sigsafe_update(void) +{ + u_char *p; + ngx_tm_t tm; + time_t sec; + ngx_time_t *tp; + struct timeval tv; + + if (!ngx_trylock(&ngx_time_lock)) { + return; + } + + ngx_gettimeofday(&tv); + + sec = tv.tv_sec; + + tp = &cached_time[slot]; + + if (tp->sec == sec) { + ngx_unlock(&ngx_time_lock); + return; + } + + if (slot == NGX_TIME_SLOTS - 1) { + slot = 0; + } else { + slot++; + } + + ngx_gmtime(sec + cached_gmtoff * 60, &tm); + + p = &cached_err_log_time[slot][0]; + + (void) ngx_sprintf(p, "%4d/%02d/%02d %02d:%02d:%02d", + tm.ngx_tm_year, tm.ngx_tm_mon, + tm.ngx_tm_mday, tm.ngx_tm_hour, + tm.ngx_tm_min, tm.ngx_tm_sec); + + ngx_memory_barrier(); + + ngx_cached_err_log_time.data = p; + + ngx_unlock(&ngx_time_lock); +} + +#endif + + u_char * ngx_http_time(u_char *buf, time_t t) { diff --git a/src/core/ngx_times.h b/src/core/ngx_times.h index 8363ca136..4e31f00a0 100644 --- a/src/core/ngx_times.h +++ b/src/core/ngx_times.h @@ -20,7 +20,8 @@ typedef struct { void ngx_time_init(void); -void ngx_time_update(time_t sec, ngx_uint_t msec); +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); |