Mercurial > hg > nginx
annotate src/misc/ngx_google_perftools_module.c @ 7682:2ab0ecfe5a5f
release-1.19.1 tag
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Tue, 07 Jul 2020 18:56:06 +0300 |
| parents | a27e0c7e198c |
| children |
| rev | line source |
|---|---|
| 1949 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
| 1949 | 5 */ |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 | |
| 11 /* | |
|
3478
eb8660fecc12
fix a comment and a style fix
Igor Sysoev <igor@sysoev.ru>
parents:
1949
diff
changeset
|
12 * declare Profiler interface here because |
| 1949 | 13 * <google/profiler.h> is C++ header file |
| 14 */ | |
| 15 | |
| 16 int ProfilerStart(u_char* fname); | |
| 17 void ProfilerStop(void); | |
| 18 void ProfilerRegisterThread(void); | |
| 19 | |
| 20 | |
| 21 static void *ngx_google_perftools_create_conf(ngx_cycle_t *cycle); | |
| 22 static ngx_int_t ngx_google_perftools_worker(ngx_cycle_t *cycle); | |
| 23 | |
| 24 | |
| 25 typedef struct { | |
| 26 ngx_str_t profiles; | |
| 27 } ngx_google_perftools_conf_t; | |
| 28 | |
| 29 | |
| 30 static ngx_command_t ngx_google_perftools_commands[] = { | |
| 31 | |
| 32 { ngx_string("google_perftools_profiles"), | |
| 33 NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1, | |
| 34 ngx_conf_set_str_slot, | |
| 35 0, | |
| 36 offsetof(ngx_google_perftools_conf_t, profiles), | |
| 37 NULL }, | |
| 38 | |
|
7066
a27e0c7e198c
Style: aligned ngx_null_command.
Ruslan Ermilov <ru@nginx.com>
parents:
4412
diff
changeset
|
39 ngx_null_command |
| 1949 | 40 }; |
| 41 | |
| 42 | |
| 43 static ngx_core_module_t ngx_google_perftools_module_ctx = { | |
| 44 ngx_string("google_perftools"), | |
| 45 ngx_google_perftools_create_conf, | |
| 46 NULL | |
| 47 }; | |
| 48 | |
| 49 | |
| 50 ngx_module_t ngx_google_perftools_module = { | |
| 51 NGX_MODULE_V1, | |
| 52 &ngx_google_perftools_module_ctx, /* module context */ | |
| 53 ngx_google_perftools_commands, /* module directives */ | |
| 54 NGX_CORE_MODULE, /* module type */ | |
| 55 NULL, /* init master */ | |
| 56 NULL, /* init module */ | |
| 57 ngx_google_perftools_worker, /* init process */ | |
| 58 NULL, /* init thread */ | |
| 59 NULL, /* exit thread */ | |
| 60 NULL, /* exit process */ | |
| 61 NULL, /* exit master */ | |
| 62 NGX_MODULE_V1_PADDING | |
| 63 }; | |
| 64 | |
| 65 | |
| 66 static void * | |
| 67 ngx_google_perftools_create_conf(ngx_cycle_t *cycle) | |
| 68 { | |
| 69 ngx_google_perftools_conf_t *gptcf; | |
| 70 | |
| 71 gptcf = ngx_pcalloc(cycle->pool, sizeof(ngx_google_perftools_conf_t)); | |
| 72 if (gptcf == NULL) { | |
| 73 return NULL; | |
| 74 } | |
| 75 | |
| 76 /* | |
| 3480 | 77 * set by ngx_pcalloc() |
| 1949 | 78 * |
| 79 * gptcf->profiles = { 0, NULL }; | |
| 80 */ | |
| 81 | |
| 82 return gptcf; | |
| 83 } | |
| 84 | |
| 85 | |
| 86 static ngx_int_t | |
| 87 ngx_google_perftools_worker(ngx_cycle_t *cycle) | |
| 88 { | |
| 89 u_char *profile; | |
| 90 ngx_google_perftools_conf_t *gptcf; | |
| 91 | |
| 92 gptcf = (ngx_google_perftools_conf_t *) | |
| 93 ngx_get_conf(cycle->conf_ctx, ngx_google_perftools_module); | |
| 94 | |
| 95 if (gptcf->profiles.len == 0) { | |
| 96 return NGX_OK; | |
| 97 } | |
| 98 | |
| 99 profile = ngx_alloc(gptcf->profiles.len + NGX_INT_T_LEN + 2, cycle->log); | |
| 100 if (profile == NULL) { | |
| 101 return NGX_OK; | |
| 102 } | |
| 103 | |
| 104 if (getenv("CPUPROFILE")) { | |
| 105 /* disable inherited Profiler enabled in master process */ | |
| 106 ProfilerStop(); | |
| 107 } | |
| 108 | |
| 109 ngx_sprintf(profile, "%V.%d%Z", &gptcf->profiles, ngx_pid); | |
| 110 | |
| 111 if (ProfilerStart(profile)) { | |
| 112 /* start ITIMER_PROF timer */ | |
| 113 ProfilerRegisterThread(); | |
| 114 | |
| 115 } else { | |
| 116 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_errno, | |
| 117 "ProfilerStart(%s) failed", profile); | |
| 118 } | |
| 119 | |
| 120 ngx_free(profile); | |
| 121 | |
| 122 return NGX_OK; | |
| 123 } | |
| 124 | |
| 125 | |
| 126 /* ProfilerStop() is called on Profiler destruction */ |