Mercurial > hg > nginx-vendor-0-8
comparison src/misc/ngx_google_perftools_module.c @ 370:9a242235a80a NGINX_0_6_29
nginx 0.6.29
*) Feature: the ngx_google_perftools_module.
*) Bugfix: the ngx_http_perl_module could be not built on 64-bit
platforms; bug appeared in 0.6.27.
author | Igor Sysoev <http://sysoev.ru> |
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date | Tue, 18 Mar 2008 00:00:00 +0300 |
parents | |
children | be4f34123024 |
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369:5906b8639a07 | 370:9a242235a80a |
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1 | |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #include <ngx_config.h> | |
8 #include <ngx_core.h> | |
9 | |
10 /* | |
11 * declare Profiler here interface because | |
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 /* | |
76 * set by pcalloc() | |
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")) { | |
104 | |
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 | |
113 /* start ITIMER_PROF timer */ | |
114 ProfilerRegisterThread(); | |
115 | |
116 } else { | |
117 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_errno, | |
118 "ProfilerStart(%s) failed", profile); | |
119 } | |
120 | |
121 ngx_free(profile); | |
122 | |
123 return NGX_OK; | |
124 } | |
125 | |
126 | |
127 /* ProfilerStop() is called on Profiler destruction */ |