Mercurial > hg > nginx
annotate src/os/unix/ngx_shmem.c @ 605:5dac8c7fb71b release-0.3.24
nginx-0.3.24-RELEASE import
*) Workaround: for bug in FreeBSD kqueue.
*) Bugfix: now a response generated by the "post_action" directive is
not transferred to a client.
*) Bugfix: the memory leaks were occurring if many log files were used.
*) Bugfix: the first "proxy_redirect" directive was working inside one
location.
*) Bugfix: on 64-bit platforms segmentation fault may occurred on start
if the many names were used in the "server_name" directives; the bug
had appeared in 0.3.18.
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Wed, 01 Feb 2006 18:22:15 +0000 |
| parents | src/os/unix/ngx_shared.c@2ff194b74f1e |
| children | 715d24327080 |
| rev | line source |
|---|---|
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 |
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10 |
| 469 | 11 #if (NGX_HAVE_MAP_ANON) |
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12 |
| 605 | 13 ngx_int_t |
| 14 ngx_shm_alloc(ngx_shm_t *shm) | |
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15 { |
| 605 | 16 shm->addr = mmap(NULL, shm->size, |
| 17 PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED, -1, 0); | |
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18 |
| 605 | 19 if (shm->addr == MAP_FAILED) { |
| 20 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, | |
| 21 "mmap(MAP_ANON|MAP_SHARED, %uz) failed", shm->size); | |
| 22 return NGX_ERROR; | |
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23 } |
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24 |
| 605 | 25 return NGX_OK; |
| 26 } | |
| 27 | |
| 28 | |
| 29 void | |
| 30 ngx_shm_free(ngx_shm_t *shm) | |
| 31 { | |
| 32 if (munmap(shm->addr, shm->size) == -1) { | |
| 33 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, | |
| 34 "munmap(%p, %uz) failed", shm->addr, shm->size); | |
| 35 } | |
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36 } |
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37 |
| 469 | 38 #elif (NGX_HAVE_MAP_DEVZERO) |
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39 |
| 605 | 40 ngx_int_t |
| 41 ngx_shm_alloc(ngx_shm_t *shm) | |
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42 { |
| 605 | 43 ngx_fd_t fd; |
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44 |
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45 fd = open("/dev/zero", O_RDWR); |
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46 |
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47 if (fd == -1) { |
| 605 | 48 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, |
| 467 | 49 "open(\"/dev/zero\") failed"); |
| 605 | 50 return NGX_ERROR; |
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51 } |
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52 |
| 605 | 53 shm->addr = mmap(NULL, shm->size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); |
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54 |
| 605 | 55 if (shm->addr == MAP_FAILED) { |
| 56 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, | |
| 57 "mmap(/dev/zero, MAP_SHARED, %uz) failed", shm->size); | |
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58 } |
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59 |
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60 if (close(fd) == -1) { |
| 605 | 61 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, |
| 467 | 62 "close(\"/dev/zero\") failed"); |
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63 } |
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64 |
| 605 | 65 return (shm->addr == MAP_FAILED) ? NGX_ERROR : NGX_OK; |
| 66 } | |
| 67 | |
| 68 | |
| 69 void | |
| 70 ngx_shm_free(ngx_shm_t *shm) | |
| 71 { | |
| 72 if (munmap(shm->addr, shm->size) == -1) { | |
| 73 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, | |
| 74 "munmap(%p, %uz) failed", shm->addr, shm->size); | |
| 75 } | |
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76 } |
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77 |
| 469 | 78 #elif (NGX_HAVE_SYSVSHM) |
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79 |
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80 #include <sys/ipc.h> |
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81 #include <sys/shm.h> |
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82 |
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83 |
| 605 | 84 ngx_int_t |
| 85 ngx_shm_alloc(ngx_shm_t *shm) | |
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86 { |
| 605 | 87 int id; |
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88 |
| 605 | 89 id = shmget(IPC_PRIVATE, shm->size, (SHM_R|SHM_W|IPC_CREAT)); |
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90 |
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91 if (id == -1) { |
| 605 | 92 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, |
| 93 "shmget(%uz) failed", shm->size); | |
| 94 return NGX_ERROR; | |
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95 } |
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96 |
| 605 | 97 ngx_log_debug1(NGX_LOG_DEBUG_CORE, shm->log, 0, "shmget id: %d", id); |
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98 |
| 605 | 99 shm->addr = shmat(id, NULL, 0); |
| 100 | |
| 101 if (shm->addr == (void *) -1) { | |
| 102 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, "shmat() failed"); | |
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103 } |
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104 |
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105 if (shmctl(id, IPC_RMID, NULL) == -1) { |
| 605 | 106 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, |
| 107 "shmctl(IPC_RMID) failed"); | |
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108 } |
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109 |
| 605 | 110 return (shm->addr == (void *) -1) ? NGX_ERROR : NGX_OK; |
| 111 } | |
| 112 | |
| 113 | |
| 114 void | |
| 115 ngx_shm_free(ngx_shm_t *shm) | |
| 116 { | |
| 117 if (shmdt(shm->addr) == -1) { | |
| 118 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, | |
| 119 "shmdt(%p) failed", shm->addr); | |
| 120 } | |
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121 } |
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122 |
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123 #endif |