Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_shared.c @ 565:7c1369d37c7e release-0.3.4
nginx-0.3.4-RELEASE import
*) Bugfix: nginx could not be built on Linux 2.4+ and MacOS X; the bug
had appeared in 0.3.3.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 19 Oct 2005 13:34:28 +0000 |
parents | 2ff194b74f1e |
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rev | line source |
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441
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1 |
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2 /* |
444
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3 * Copyright (C) Igor Sysoev |
441
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4 */ |
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5 |
358
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6 |
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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) |
358
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12 |
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13 void *ngx_create_shared_memory(size_t size, ngx_log_t *log) |
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14 { |
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15 void *p; |
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16 |
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17 p = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED, -1, 0); |
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18 |
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19 if (p == MAP_FAILED) { |
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20 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
461 | 21 "mmap(MAP_ANON|MAP_SHARED, %uz) failed", size); |
358
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22 return NULL; |
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23 } |
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24 |
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25 return p; |
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26 } |
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27 |
469 | 28 #elif (NGX_HAVE_MAP_DEVZERO) |
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29 |
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30 void *ngx_create_shared_memory(size_t size, ngx_log_t *log) |
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31 { |
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32 void *p; |
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33 ngx_fd_t fd; |
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34 |
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35 fd = open("/dev/zero", O_RDWR); |
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36 |
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37 if (fd == -1) { |
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38 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
467 | 39 "open(\"/dev/zero\") failed"); |
358
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40 return NULL; |
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41 } |
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42 |
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43 p = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); |
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44 |
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45 if (p == MAP_FAILED) { |
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46 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
461 | 47 "mmap(/dev/zero, MAP_SHARED, %uz) failed", size); |
358
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48 p = NULL; |
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49 } |
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50 |
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51 if (close(fd) == -1) { |
467 | 52 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
53 "close(\"/dev/zero\") failed"); | |
358
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54 } |
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55 |
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56 return p; |
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57 } |
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58 |
469 | 59 #elif (NGX_HAVE_SYSVSHM) |
358
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60 |
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61 #include <sys/ipc.h> |
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62 #include <sys/shm.h> |
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63 |
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64 |
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65 void *ngx_create_shared_memory(size_t size, ngx_log_t *log) |
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66 { |
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67 int id; |
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68 void *p; |
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69 |
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70 id = shmget(IPC_PRIVATE, size, (SHM_R|SHM_W|IPC_CREAT)); |
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71 |
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72 if (id == -1) { |
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73 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
461 | 74 "shmget(%uz) failed", size); |
358
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75 return NULL; |
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76 } |
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77 |
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78 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "shmget id: %d", id); |
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79 |
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80 p = shmat(id, NULL, 0); |
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81 |
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82 if (p == (void *) -1) { |
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83 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "shmat() failed"); |
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84 p = NULL; |
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85 } |
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86 |
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87 if (shmctl(id, IPC_RMID, NULL) == -1) { |
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88 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "shmctl(IPC_RMID) failed"); |
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89 p = NULL; |
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90 } |
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91 |
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92 return p; |
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93 } |
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94 |
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95 #endif |