Mercurial > hg > nginx

annotate src/os/unix/ngx_shared.c @ 358:0a03c921c81d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.0.7-2004-06-17-21:18:53 import
author Igor Sysoev <igor@sysoev.ru>
date Thu, 17 Jun 2004 17:18:53 +0000
parents
children da8c5707af39
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
358
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
1
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
2 #include <ngx_config.h>
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
3 #include <ngx_core.h>
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
4
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
5
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
6 #if (HAVE_MAP_ANON)
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 void *ngx_create_shared_memory(size_t size, ngx_log_t *log)
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
9 {
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
10 void *p;
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
11
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
12 p = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED, -1, 0);
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
13
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
14 if (p == MAP_FAILED) {
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
15 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
16 "mmap(MAP_ANON|MAP_SHARED, " SIZE_T_FMT ") failed",
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
17 size);
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
18 return NULL;
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
19 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
20
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
21 return p;
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
22 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
23
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
24 #elif (HAVE_MAP_DEVZERO)
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 void *ngx_create_shared_memory(size_t size, ngx_log_t *log)
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
27 {
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
28 void *p;
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
29 ngx_fd_t fd;
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
30
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
31 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
32
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
33 if (fd == -1) {
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
34 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
35 "open(/dev/zero) failed");
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
36 return NULL;
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
37 }
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 p = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
40
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
41 if (p == MAP_FAILED) {
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
42 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
43 "mmap(/dev/zero, MAP_SHARED, " SIZE_T_FMT ") failed",
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
44 size);
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
45 p = NULL;
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
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
48 if (close(fd) == -1) {
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
49 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "close() failed");
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
50 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
51
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
52 return p;
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
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
55 #elif (HAVE_SYSVSHM)
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
56
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
57 #include <sys/ipc.h>
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
58 #include <sys/shm.h>
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
59
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
60
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
61 void *ngx_create_shared_memory(size_t size, ngx_log_t *log)
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 int id;
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
64 void *p;
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
65
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
66 id = shmget(IPC_PRIVATE, size, (SHM_R|SHM_W|IPC_CREAT));
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
67
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
68 if (id == -1) {
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
69 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
70 "shmget(" SIZE_T_FMT ") failed", size);
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
71 return NULL;
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
72 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
73
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
74 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "shmget id: %d", id);
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
75
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
76 p = shmat(id, NULL, 0);
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
77
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
78 if (p == (void *) -1) {
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
79 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "shmat() failed");
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
80 p = NULL;
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
81 }
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 if (shmctl(id, IPC_RMID, NULL) == -1) {
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
84 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "shmctl(IPC_RMID) failed");
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
85 p = NULL;
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
86 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
87
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
88 return p;
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
89 }
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
90
0a03c921c81d nginx-0.0.7-2004-06-17-21:18:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
91 #endif