Mercurial > hg > nginx

annotate src/os/unix/ngx_shmem.c @ 7660:d33e17499088

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Version bump.
author Maxim Dounin <mdounin@mdounin.ru>
date Tue, 26 May 2020 22:03:00 +0300
parents d620f497c50f
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
441
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 358
diff changeset
1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 358
diff changeset
2 /*
444
42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
Igor Sysoev <igor@sysoev.ru>
parents: 441
diff changeset
3 * Copyright (C) Igor Sysoev
4412
d620f497c50f Copyright updated.
Maxim Konovalov <maxim@nginx.com>
parents: 639
diff changeset
4 * Copyright (C) Nginx, Inc.
441
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 358
diff changeset
5 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 358
diff changeset
6
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
7
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
8 #include <ngx_config.h>
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
9 #include <ngx_core.h>
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
10
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
11
469
2ff194b74f1e nginx-0.1.9-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 467
diff changeset
12 #if (NGX_HAVE_MAP_ANON)
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
13
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
14 ngx_int_t
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
15 ngx_shm_alloc(ngx_shm_t *shm)
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
16 {
639
715d24327080 nginx-0.3.41-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 605
diff changeset
17 shm->addr = (u_char *) mmap(NULL, shm->size,
715d24327080 nginx-0.3.41-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 605
diff changeset
18 PROT_READ|PROT_WRITE,
715d24327080 nginx-0.3.41-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 605
diff changeset
19 MAP_ANON|MAP_SHARED, -1, 0);
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
20
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
21 if (shm->addr == MAP_FAILED) {
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
22 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
23 "mmap(MAP_ANON|MAP_SHARED, %uz) failed", shm->size);
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
24 return NGX_ERROR;
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
25 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
26
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
27 return NGX_OK;
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
28 }
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
29
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
30
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
31 void
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
32 ngx_shm_free(ngx_shm_t *shm)
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
33 {
639
715d24327080 nginx-0.3.41-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 605
diff changeset
34 if (munmap((void *) shm->addr, shm->size) == -1) {
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
35 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
36 "munmap(%p, %uz) failed", shm->addr, shm->size);
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
37 }
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
38 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
39
469
2ff194b74f1e nginx-0.1.9-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 467
diff changeset
40 #elif (NGX_HAVE_MAP_DEVZERO)
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
41
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
42 ngx_int_t
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
43 ngx_shm_alloc(ngx_shm_t *shm)
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
44 {
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
45 ngx_fd_t fd;
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
46
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
47 fd = open("/dev/zero", O_RDWR);
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
48
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
49 if (fd == -1) {
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
50 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
467
bbd6b0b4a2b1 nginx-0.1.8-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 461
diff changeset
51 "open(\"/dev/zero\") failed");
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
52 return NGX_ERROR;
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
53 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
54
639
715d24327080 nginx-0.3.41-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 605
diff changeset
55 shm->addr = (u_char *) mmap(NULL, shm->size, PROT_READ|PROT_WRITE,
715d24327080 nginx-0.3.41-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 605
diff changeset
56 MAP_SHARED, fd, 0);
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
57
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
58 if (shm->addr == MAP_FAILED) {
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
59 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
60 "mmap(/dev/zero, MAP_SHARED, %uz) failed", shm->size);
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
61 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
62
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
63 if (close(fd) == -1) {
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
64 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
467
bbd6b0b4a2b1 nginx-0.1.8-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 461
diff changeset
65 "close(\"/dev/zero\") failed");
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
66 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
67
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
68 return (shm->addr == MAP_FAILED) ? NGX_ERROR : NGX_OK;
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
69 }
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
70
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
71
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
72 void
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
73 ngx_shm_free(ngx_shm_t *shm)
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
74 {
639
715d24327080 nginx-0.3.41-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 605
diff changeset
75 if (munmap((void *) shm->addr, shm->size) == -1) {
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
76 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
77 "munmap(%p, %uz) failed", shm->addr, shm->size);
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
78 }
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
79 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
80
469
2ff194b74f1e nginx-0.1.9-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 467
diff changeset
81 #elif (NGX_HAVE_SYSVSHM)
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
82
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
83 #include <sys/ipc.h>
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
84 #include <sys/shm.h>
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
85
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
86
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
87 ngx_int_t
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
88 ngx_shm_alloc(ngx_shm_t *shm)
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
89 {
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
90 int id;
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
91
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
92 id = shmget(IPC_PRIVATE, shm->size, (SHM_R|SHM_W|IPC_CREAT));
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
93
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
94 if (id == -1) {
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
95 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
96 "shmget(%uz) failed", shm->size);
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
97 return NGX_ERROR;
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
98 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
99
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
100 ngx_log_debug1(NGX_LOG_DEBUG_CORE, shm->log, 0, "shmget id: %d", id);
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
101
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
102 shm->addr = shmat(id, NULL, 0);
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
103
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
104 if (shm->addr == (void *) -1) {
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
105 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, "shmat() failed");
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
106 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
107
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
108 if (shmctl(id, IPC_RMID, NULL) == -1) {
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
109 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
110 "shmctl(IPC_RMID) failed");
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
111 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
112
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
113 return (shm->addr == (void *) -1) ? NGX_ERROR : NGX_OK;
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
114 }
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
115
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
116
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
117 void
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
118 ngx_shm_free(ngx_shm_t *shm)
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
119 {
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
120 if (shmdt(shm->addr) == -1) {
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
121 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
122 "shmdt(%p) failed", shm->addr);
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 469
diff changeset
123 }
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
124 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
125
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
126 #endif