Mercurial > hg > nginx-quic
annotate src/misc/ngx_google_perftools_module.c @ 8935:38c71f9b2293
SSL: reduced logging of session cache failures (ticket #621).
Session cache allocations might fail as long as the new session is different
in size from the one least recently used (and freed when the first allocation
fails). In particular, it might not be possible to allocate space for
sessions with client certificates, since they are noticeably bigger than
normal sessions.
To ensure such allocation failures won't clutter logs, logging level changed
to "warn", and logging is now limited to at most one warning per second.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Wed, 12 Oct 2022 20:14:36 +0300 |
parents | a27e0c7e198c |
children |
rev | line source |
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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 */ |