| Igor Sysoev | 85dd8fc | 2008-03-18 10:36:27 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright (C) Igor Sysoev |
| 4 | */ |
| 5 | |
| 6 | |
| 7 | #include <ngx_config.h> |
| 8 | #include <ngx_core.h> |
| 9 | |
| 10 | /* |
| Igor Sysoev | b45498c | 2010-03-26 11:27:32 +0000 | [diff] [blame] | 11 | * declare Profiler interface here because |
| Igor Sysoev | 85dd8fc | 2008-03-18 10:36:27 +0000 | [diff] [blame] | 12 | * <google/profiler.h> is C++ header file |
| 13 | */ |
| 14 | |
| 15 | int ProfilerStart(u_char* fname); |
| 16 | void ProfilerStop(void); |
| 17 | void ProfilerRegisterThread(void); |
| 18 | |
| 19 | |
| 20 | static void *ngx_google_perftools_create_conf(ngx_cycle_t *cycle); |
| 21 | static ngx_int_t ngx_google_perftools_worker(ngx_cycle_t *cycle); |
| 22 | |
| 23 | |
| 24 | typedef struct { |
| 25 | ngx_str_t profiles; |
| 26 | } ngx_google_perftools_conf_t; |
| 27 | |
| 28 | |
| 29 | static ngx_command_t ngx_google_perftools_commands[] = { |
| 30 | |
| 31 | { ngx_string("google_perftools_profiles"), |
| 32 | NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1, |
| 33 | ngx_conf_set_str_slot, |
| 34 | 0, |
| 35 | offsetof(ngx_google_perftools_conf_t, profiles), |
| 36 | NULL }, |
| 37 | |
| 38 | ngx_null_command |
| 39 | }; |
| 40 | |
| 41 | |
| 42 | static ngx_core_module_t ngx_google_perftools_module_ctx = { |
| 43 | ngx_string("google_perftools"), |
| 44 | ngx_google_perftools_create_conf, |
| 45 | NULL |
| 46 | }; |
| 47 | |
| 48 | |
| 49 | ngx_module_t ngx_google_perftools_module = { |
| 50 | NGX_MODULE_V1, |
| 51 | &ngx_google_perftools_module_ctx, /* module context */ |
| 52 | ngx_google_perftools_commands, /* module directives */ |
| 53 | NGX_CORE_MODULE, /* module type */ |
| 54 | NULL, /* init master */ |
| 55 | NULL, /* init module */ |
| 56 | ngx_google_perftools_worker, /* init process */ |
| 57 | NULL, /* init thread */ |
| 58 | NULL, /* exit thread */ |
| 59 | NULL, /* exit process */ |
| 60 | NULL, /* exit master */ |
| 61 | NGX_MODULE_V1_PADDING |
| 62 | }; |
| 63 | |
| 64 | |
| 65 | static void * |
| 66 | ngx_google_perftools_create_conf(ngx_cycle_t *cycle) |
| 67 | { |
| 68 | ngx_google_perftools_conf_t *gptcf; |
| 69 | |
| 70 | gptcf = ngx_pcalloc(cycle->pool, sizeof(ngx_google_perftools_conf_t)); |
| 71 | if (gptcf == NULL) { |
| 72 | return NULL; |
| 73 | } |
| 74 | |
| 75 | /* |
| Igor Sysoev | 86f791e | 2010-03-26 21:17:26 +0000 | [diff] [blame] | 76 | * set by ngx_pcalloc() |
| Igor Sysoev | 85dd8fc | 2008-03-18 10:36:27 +0000 | [diff] [blame] | 77 | * |
| 78 | * gptcf->profiles = { 0, NULL }; |
| 79 | */ |
| 80 | |
| 81 | return gptcf; |
| 82 | } |
| 83 | |
| 84 | |
| 85 | static ngx_int_t |
| 86 | ngx_google_perftools_worker(ngx_cycle_t *cycle) |
| 87 | { |
| 88 | u_char *profile; |
| 89 | ngx_google_perftools_conf_t *gptcf; |
| 90 | |
| 91 | gptcf = (ngx_google_perftools_conf_t *) |
| 92 | ngx_get_conf(cycle->conf_ctx, ngx_google_perftools_module); |
| 93 | |
| 94 | if (gptcf->profiles.len == 0) { |
| 95 | return NGX_OK; |
| 96 | } |
| 97 | |
| 98 | profile = ngx_alloc(gptcf->profiles.len + NGX_INT_T_LEN + 2, cycle->log); |
| 99 | if (profile == NULL) { |
| 100 | return NGX_OK; |
| 101 | } |
| 102 | |
| 103 | if (getenv("CPUPROFILE")) { |
| Igor Sysoev | 85dd8fc | 2008-03-18 10:36:27 +0000 | [diff] [blame] | 104 | /* disable inherited Profiler enabled in master process */ |
| 105 | ProfilerStop(); |
| 106 | } |
| 107 | |
| 108 | ngx_sprintf(profile, "%V.%d%Z", &gptcf->profiles, ngx_pid); |
| 109 | |
| 110 | if (ProfilerStart(profile)) { |
| Igor Sysoev | 85dd8fc | 2008-03-18 10:36:27 +0000 | [diff] [blame] | 111 | /* start ITIMER_PROF timer */ |
| 112 | ProfilerRegisterThread(); |
| 113 | |
| 114 | } else { |
| 115 | ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_errno, |
| 116 | "ProfilerStart(%s) failed", profile); |
| 117 | } |
| 118 | |
| 119 | ngx_free(profile); |
| 120 | |
| 121 | return NGX_OK; |
| 122 | } |
| 123 | |
| 124 | |
| 125 | /* ProfilerStop() is called on Profiler destruction */ |
