Mercurial > hg > nginx-vendor-current
comparison src/core/ngx_garbage_collector.c @ 0:f0b350454894 NGINX_0_1_0
nginx 0.1.0
*) The first public version.
author | Igor Sysoev <http://sysoev.ru> |
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date | Mon, 04 Oct 2004 00:00:00 +0400 |
parents | |
children | 80ba094c6b3e |
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-1:000000000000 | 0:f0b350454894 |
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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 #include <ngx_garbage_collector.h> | |
10 | |
11 | |
12 int ngx_garbage_collector_temp_handler(ngx_gc_t *ctx, ngx_str_t *name, | |
13 ngx_dir_t *dir); | |
14 | |
15 | |
16 static int ngx_collect_garbage(ngx_gc_t *ctx, ngx_str_t *dname, int level); | |
17 | |
18 | |
19 | |
20 #if 0 | |
21 | |
22 { | |
23 ngx_test_null(cycle->timer_events, | |
24 ngx_alloc(sizeof(ngx_event_t) * TIMERS, cycle->log), | |
25 NGX_ERROR); | |
26 | |
27 ngx_event_timer_init(cycle); | |
28 } | |
29 | |
30 | |
31 void garbage_collector() | |
32 { | |
33 ngx_msec_t timer; | |
34 struct timeval tv; | |
35 ngx_epoch_msec_t delta; | |
36 | |
37 for ( ;; ) { | |
38 timer = ngx_event_find_timer(); | |
39 | |
40 ngx_gettimeofday(&tv); | |
41 delta = tv.tv_sec * 1000 + tv.tv_usec / 1000; | |
42 | |
43 msleep(timer); | |
44 | |
45 ngx_gettimeofday(&tv); | |
46 | |
47 ngx_cached_time = tv.tv_sec; | |
48 ngx_time_update(); | |
49 | |
50 delta = tv.tv_sec * 1000 + tv.tv_usec / 1000 - delta; | |
51 | |
52 ngx_event_expire_timers((ngx_msec_t) delta); | |
53 } | |
54 } | |
55 | |
56 #endif | |
57 | |
58 | |
59 void stub_init(ngx_cycle_t *cycle) | |
60 { | |
61 ngx_uint_t i; | |
62 ngx_gc_t ctx; | |
63 ngx_path_t **path; | |
64 | |
65 path = cycle->pathes.elts; | |
66 for (i = 0; i < cycle->pathes.nelts; i++) { | |
67 ctx.path = path[i]; | |
68 ctx.log = cycle->log; | |
69 ctx.handler = path[i]->gc_handler; | |
70 | |
71 ngx_collect_garbage(&ctx, &path[i]->name, 0); | |
72 } | |
73 } | |
74 | |
75 | |
76 static int ngx_collect_garbage(ngx_gc_t *ctx, ngx_str_t *dname, int level) | |
77 { | |
78 int rc; | |
79 u_char *last; | |
80 size_t len; | |
81 ngx_err_t err; | |
82 ngx_str_t fname, buf; | |
83 ngx_dir_t dir; | |
84 | |
85 buf.len = 0; | |
86 #if (NGX_SUPPRESS_WARN) | |
87 buf.data = NULL; | |
88 fname.data = NULL; | |
89 #endif | |
90 | |
91 ngx_log_debug2(NGX_LOG_DEBUG_CORE, ctx->log, 0, | |
92 "gc dir \"%s\":%d", dname->data, dname->len); | |
93 | |
94 if (ngx_open_dir(dname, &dir) == NGX_ERROR) { | |
95 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, | |
96 ngx_open_dir_n " \"%s\" failed", dname->data); | |
97 return NGX_ERROR; | |
98 } | |
99 | |
100 for ( ;; ) { | |
101 ngx_set_errno(0); | |
102 if (ngx_read_dir(&dir) == NGX_ERROR) { | |
103 err = ngx_errno; | |
104 | |
105 if (err != NGX_ENOMOREFILES) { | |
106 ngx_log_error(NGX_LOG_CRIT, ctx->log, err, | |
107 ngx_read_dir_n " \"%s\" failed", dname->data); | |
108 rc = NGX_ERROR; | |
109 | |
110 } else { | |
111 rc = NGX_OK; | |
112 } | |
113 | |
114 break; | |
115 } | |
116 | |
117 len = ngx_de_namelen(&dir); | |
118 | |
119 ngx_log_debug2(NGX_LOG_DEBUG_CORE, ctx->log, 0, | |
120 "gc name \"%s\":%d", ngx_de_name(&dir), len); | |
121 | |
122 if (len == 1 && ngx_de_name(&dir)[0] == '.') { | |
123 continue; | |
124 } | |
125 | |
126 if (len == 2 | |
127 && ngx_de_name(&dir)[0] == '.' | |
128 && ngx_de_name(&dir)[1] == '.') | |
129 { | |
130 continue; | |
131 } | |
132 | |
133 fname.len = dname->len + 1+ len; | |
134 | |
135 if (fname.len + NGX_DIR_MASK_LEN > buf.len) { | |
136 | |
137 if (buf.len) { | |
138 ngx_free(buf.data); | |
139 } | |
140 | |
141 buf.len = dname->len + 1 + len + NGX_DIR_MASK_LEN; | |
142 | |
143 if (!(buf.data = ngx_alloc(buf.len + 1, ctx->log))) { | |
144 return NGX_ABORT; | |
145 } | |
146 } | |
147 | |
148 last = ngx_cpymem(buf.data, dname->data, dname->len); | |
149 *last++ = '/'; | |
150 ngx_memcpy(last, ngx_de_name(&dir), len + 1); | |
151 fname.data = buf.data; | |
152 | |
153 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0, | |
154 "gc path: \"%s\"", fname.data); | |
155 | |
156 if (!dir.info_valid) { | |
157 if (ngx_de_info(fname.data, &dir) == NGX_FILE_ERROR) { | |
158 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, | |
159 ngx_de_info_n " \"%s\" failed", fname.data); | |
160 continue; | |
161 } | |
162 } | |
163 | |
164 if (ngx_de_is_dir(&dir)) { | |
165 | |
166 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0, | |
167 "gc enter dir \"%s\"", fname.data); | |
168 | |
169 if (level == -1 | |
170 /* there can not be directory on the last level */ | |
171 || level == NGX_MAX_PATH_LEVEL | |
172 /* an directory from the old path hierarchy */ | |
173 || len != ctx->path->level[level]) | |
174 { | |
175 if (ngx_collect_garbage(ctx, &fname, -1) == NGX_ABORT) { | |
176 return NGX_ABORT; | |
177 } | |
178 | |
179 fname.data[fname.len] = '\0'; | |
180 | |
181 ngx_log_error(NGX_LOG_NOTICE, ctx->log, 0, | |
182 "delete old hierachy directory \"%s\"", | |
183 fname.data); | |
184 | |
185 if (ngx_delete_dir(fname.data) == NGX_FILE_ERROR) { | |
186 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, | |
187 ngx_delete_dir_n " \"%s\" failed", | |
188 fname.data); | |
189 } else { | |
190 ctx->deleted++; | |
191 ctx->freed += ngx_de_size(&dir); | |
192 } | |
193 | |
194 continue; | |
195 } | |
196 | |
197 if (ngx_collect_garbage(ctx, &fname, level + 1) == NGX_ABORT) { | |
198 return NGX_ABORT; | |
199 } | |
200 | |
201 } else if (ngx_de_is_file(&dir)) { | |
202 | |
203 ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0, | |
204 "gc file \"%s\"", fname.data); | |
205 | |
206 if (level == -1 | |
207 || (level < NGX_MAX_PATH_LEVEL && ctx->path->level[level] != 0)) | |
208 { | |
209 if (ngx_delete_file(fname.data) == NGX_FILE_ERROR) { | |
210 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, | |
211 ngx_delete_file_n " \"%s\" failed", | |
212 fname.data); | |
213 } else { | |
214 ctx->deleted++; | |
215 ctx->freed += ngx_de_size(&dir); | |
216 } | |
217 | |
218 continue; | |
219 } | |
220 | |
221 if (ctx->handler(ctx, &fname, &dir) == NGX_ABORT) { | |
222 return NGX_ABORT; | |
223 } | |
224 | |
225 } else { | |
226 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, | |
227 "\"%s\" has unknown file type, deleting", fname.data); | |
228 | |
229 if (ngx_delete_file(fname.data) == NGX_FILE_ERROR) { | |
230 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, | |
231 ngx_delete_file_n " \"%s\" failed", fname.data); | |
232 } else { | |
233 ctx->deleted++; | |
234 ctx->freed += ngx_de_size(&dir); | |
235 } | |
236 } | |
237 } | |
238 | |
239 if (buf.len) { | |
240 ngx_free(buf.data); | |
241 } | |
242 | |
243 if (ngx_close_dir(&dir) == NGX_ERROR) { | |
244 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, | |
245 ngx_close_dir_n " \"%s\" failed", fname.data); | |
246 } | |
247 | |
248 return rc; | |
249 } | |
250 | |
251 | |
252 int ngx_garbage_collector_temp_handler(ngx_gc_t *ctx, ngx_str_t *name, | |
253 ngx_dir_t *dir) | |
254 { | |
255 /* | |
256 * We use mtime only and do not use atime because: | |
257 * on NTFS access time has a resolution of 1 hour, | |
258 * on NT FAT access time has a resolution of 1 day, | |
259 * Unices have the mount option "noatime". | |
260 */ | |
261 | |
262 if (ngx_time() - ngx_de_mtime(dir) < 3600) { | |
263 return NGX_OK; | |
264 } | |
265 | |
266 ngx_log_error(NGX_LOG_NOTICE, ctx->log, 0, | |
267 "delete stale temporary \"%s\"", name->data); | |
268 | |
269 if (ngx_delete_file(name->data) == NGX_FILE_ERROR) { | |
270 ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, | |
271 ngx_delete_file_n " \"%s\" failed", name->data); | |
272 return NGX_ERROR; | |
273 } | |
274 | |
275 ctx->deleted++; | |
276 ctx->freed += ngx_de_size(dir); | |
277 | |
278 return NGX_OK; | |
279 } |