Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_shared.c @ 358:0a03c921c81d
nginx-0.0.7-2004-06-17-21:18:53 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 17 Jun 2004 17:18:53 +0000 |
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children | da8c5707af39 |
rev | line source |
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358
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nginx-0.0.7-2004-06-17-21:18:53 import
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1 |
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nginx-0.0.7-2004-06-17-21:18:53 import
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2 #include <ngx_config.h> |
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nginx-0.0.7-2004-06-17-21:18:53 import
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3 #include <ngx_core.h> |
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4 |
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5 |
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nginx-0.0.7-2004-06-17-21:18:53 import
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6 #if (HAVE_MAP_ANON) |
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7 |
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nginx-0.0.7-2004-06-17-21:18:53 import
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8 void *ngx_create_shared_memory(size_t size, ngx_log_t *log) |
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nginx-0.0.7-2004-06-17-21:18:53 import
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9 { |
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nginx-0.0.7-2004-06-17-21:18:53 import
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10 void *p; |
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nginx-0.0.7-2004-06-17-21:18:53 import
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11 |
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nginx-0.0.7-2004-06-17-21:18:53 import
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12 p = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED, -1, 0); |
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nginx-0.0.7-2004-06-17-21:18:53 import
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13 |
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nginx-0.0.7-2004-06-17-21:18:53 import
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14 if (p == MAP_FAILED) { |
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nginx-0.0.7-2004-06-17-21:18:53 import
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15 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
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16 "mmap(MAP_ANON|MAP_SHARED, " SIZE_T_FMT ") failed", |
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nginx-0.0.7-2004-06-17-21:18:53 import
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17 size); |
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18 return NULL; |
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19 } |
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20 |
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21 return p; |
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22 } |
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23 |
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nginx-0.0.7-2004-06-17-21:18:53 import
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24 #elif (HAVE_MAP_DEVZERO) |
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25 |
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nginx-0.0.7-2004-06-17-21:18:53 import
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26 void *ngx_create_shared_memory(size_t size, ngx_log_t *log) |
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27 { |
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28 void *p; |
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nginx-0.0.7-2004-06-17-21:18:53 import
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29 ngx_fd_t fd; |
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30 |
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nginx-0.0.7-2004-06-17-21:18:53 import
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31 fd = open("/dev/zero", O_RDWR); |
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32 |
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nginx-0.0.7-2004-06-17-21:18:53 import
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33 if (fd == -1) { |
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34 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
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35 "open(/dev/zero) failed"); |
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36 return NULL; |
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nginx-0.0.7-2004-06-17-21:18:53 import
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37 } |
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nginx-0.0.7-2004-06-17-21:18:53 import
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38 |
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nginx-0.0.7-2004-06-17-21:18:53 import
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39 p = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); |
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40 |
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nginx-0.0.7-2004-06-17-21:18:53 import
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41 if (p == MAP_FAILED) { |
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nginx-0.0.7-2004-06-17-21:18:53 import
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42 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
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nginx-0.0.7-2004-06-17-21:18:53 import
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43 "mmap(/dev/zero, MAP_SHARED, " SIZE_T_FMT ") failed", |
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nginx-0.0.7-2004-06-17-21:18:53 import
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44 size); |
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nginx-0.0.7-2004-06-17-21:18:53 import
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45 p = NULL; |
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nginx-0.0.7-2004-06-17-21:18:53 import
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46 } |
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nginx-0.0.7-2004-06-17-21:18:53 import
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47 |
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nginx-0.0.7-2004-06-17-21:18:53 import
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48 if (close(fd) == -1) { |
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49 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "close() failed"); |
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50 } |
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51 |
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52 return p; |
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nginx-0.0.7-2004-06-17-21:18:53 import
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53 } |
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54 |
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nginx-0.0.7-2004-06-17-21:18:53 import
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55 #elif (HAVE_SYSVSHM) |
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56 |
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nginx-0.0.7-2004-06-17-21:18:53 import
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57 #include <sys/ipc.h> |
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58 #include <sys/shm.h> |
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59 |
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60 |
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61 void *ngx_create_shared_memory(size_t size, ngx_log_t *log) |
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62 { |
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63 int id; |
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64 void *p; |
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65 |
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66 id = shmget(IPC_PRIVATE, size, (SHM_R|SHM_W|IPC_CREAT)); |
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67 |
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68 if (id == -1) { |
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69 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
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70 "shmget(" SIZE_T_FMT ") failed", size); |
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71 return NULL; |
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72 } |
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73 |
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74 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "shmget id: %d", id); |
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75 |
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76 p = shmat(id, NULL, 0); |
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77 |
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78 if (p == (void *) -1) { |
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79 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "shmat() failed"); |
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80 p = NULL; |
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81 } |
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82 |
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83 if (shmctl(id, IPC_RMID, NULL) == -1) { |
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84 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "shmctl(IPC_RMID) failed"); |
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85 p = NULL; |
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86 } |
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87 |
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88 return p; |
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89 } |
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90 |
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91 #endif |