Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_freebsd_rfork_thread.c @ 484:60452f1c0c62
release-0.1.16 tag
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 25 Jan 2005 12:27:35 +0000 |
parents | 2ff194b74f1e |
children | d4ea69372b94 |
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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5 |
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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 /* |
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11 * The threads implementation uses the rfork(RFPROC|RFTHREAD|RFMEM) syscall |
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12 * to create threads. All threads use the stacks of the same size mmap()ed |
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13 * below the main stack. Thus the current thread id is determinated via |
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14 * the stack pointer value. |
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15 * |
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16 * The mutex implementation uses the ngx_atomic_cmp_set() operation |
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17 * to acquire a mutex and the SysV semaphore to wait on a mutex and to wake up |
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18 * the waiting threads. The light mutex does not use semaphore, so after |
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19 * spinning in the lock the thread calls sched_yield(). However the light |
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20 * mutecies are intended to be used with the "trylock" operation only. |
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21 * The SysV semop() is a cheap syscall, particularly if it has little sembuf's |
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22 * and does not use SEM_UNDO. |
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23 * |
461 | 24 * The condition variable implementation uses the signal #64. |
25 * The signal handler is SIG_IGN so the kill() is a cheap syscall. | |
26 * The thread waits a signal in kevent(). The use of the EVFILT_SIGNAL | |
27 * is safe since FreeBSD 4.10-STABLE. | |
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28 * |
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29 * This threads implementation currently works on i386 (486+) and amd64 |
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30 * platforms only. |
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31 */ |
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32 |
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33 |
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34 char *ngx_freebsd_kern_usrstack; |
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35 size_t ngx_thread_stack_size; |
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36 |
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37 |
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38 static size_t rz_size; |
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39 static size_t usable_stack_size; |
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40 static char *last_stack; |
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41 |
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42 static ngx_uint_t nthreads; |
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43 static ngx_uint_t max_threads; |
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44 |
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45 static ngx_uint_t nkeys; |
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46 static ngx_tid_t *tids; /* the threads tids array */ |
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47 void **ngx_tls; /* the threads tls's array */ |
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48 |
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49 /* the thread-safe libc errno */ |
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50 |
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51 static int errno0; /* the main thread's errno */ |
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52 static int *errnos; /* the threads errno's array */ |
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53 |
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54 int *__error() |
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55 { |
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56 int tid; |
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57 |
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58 tid = ngx_gettid(); |
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59 |
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60 return tid ? &errnos[tid - 1] : &errno0; |
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61 } |
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62 |
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63 |
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64 /* |
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65 * __isthreaded enables the spinlocks in some libc functions, i.e. in malloc() |
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66 * and some other places. Nevertheless we protect our malloc()/free() calls |
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67 * by own mutex that is more efficient than the spinlock. |
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68 * |
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69 * _spinlock() is a weak referenced stub in src/lib/libc/gen/_spinlock_stub.c |
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70 * that does nothing. |
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71 */ |
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72 |
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73 extern int __isthreaded; |
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74 |
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75 void _spinlock(ngx_atomic_t *lock) |
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76 { |
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77 ngx_int_t tries; |
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78 |
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79 tries = 0; |
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80 |
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81 for ( ;; ) { |
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82 |
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83 if (*lock) { |
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84 if (ngx_ncpu > 1 && tries++ < 1000) { |
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85 continue; |
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86 } |
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87 |
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88 sched_yield(); |
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89 tries = 0; |
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90 |
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91 } else { |
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92 if (ngx_atomic_cmp_set(lock, 0, 1)) { |
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93 return; |
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94 } |
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95 } |
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96 } |
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97 } |
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98 |
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99 |
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100 /* |
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101 * Before FreeBSD 5.1 _spinunlock() is a simple #define in |
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102 * src/lib/libc/include/spinlock.h that zeroes lock. |
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103 * |
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104 * Since FreeBSD 5.1 _spinunlock() is a weak referenced stub in |
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105 * src/lib/libc/gen/_spinlock_stub.c that does nothing. |
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106 */ |
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107 |
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108 #ifndef _spinunlock |
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109 |
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110 void _spinunlock(ngx_atomic_t *lock) |
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111 { |
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112 *lock = 0; |
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113 } |
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114 |
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115 #endif |
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116 |
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117 |
461 | 118 ngx_err_t ngx_create_thread(ngx_tid_t *tid, void* (*func)(void *arg), void *arg, |
119 ngx_log_t *log) | |
3
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120 { |
461 | 121 ngx_pid_t id; |
122 ngx_err_t err; | |
123 char *stack, *stack_top; | |
84
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124 |
266
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125 if (nthreads >= max_threads) { |
86
3973260705cc
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126 ngx_log_error(NGX_LOG_CRIT, log, 0, |
461 | 127 "no more than %ui threads can be created", max_threads); |
84
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128 return NGX_ERROR; |
fab4cb00fe5b
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129 } |
3
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130 |
272
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131 last_stack -= ngx_thread_stack_size; |
266
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132 |
86
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133 stack = mmap(last_stack, usable_stack_size, PROT_READ|PROT_WRITE, |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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134 MAP_STACK, -1, 0); |
266
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135 |
86
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nginx-0.0.1-2003-05-12-19:52:24 import
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136 if (stack == MAP_FAILED) { |
266
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137 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
461 | 138 "mmap(%p:%uz, MAP_STACK) thread stack failed", |
86
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139 last_stack, usable_stack_size); |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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140 return NGX_ERROR; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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141 } |
3973260705cc
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142 |
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143 if (stack != last_stack) { |
461 | 144 ngx_log_error(NGX_LOG_ALERT, log, 0, |
145 "stack %p address was changed to %p", last_stack, stack); | |
146 return NGX_ERROR; | |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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147 } |
3973260705cc
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|
148 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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149 stack_top = stack + usable_stack_size; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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parents:
85
diff
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|
150 |
266
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parents:
208
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|
151 ngx_log_debug2(NGX_LOG_DEBUG_CORE, log, 0, |
461 | 152 "thread stack: %p-%p", stack, stack_top); |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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parents:
85
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153 |
376
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diff
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154 ngx_set_errno(0); |
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155 |
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156 id = rfork_thread(RFPROC|RFTHREAD|RFMEM, stack_top, |
d0451e402e27
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157 (ngx_rfork_thread_func_pt) func, arg); |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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parents:
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diff
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|
158 |
266
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parents:
208
diff
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159 err = ngx_errno; |
3
34a521b1a148
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
160 |
84
fab4cb00fe5b
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Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
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|
161 if (id == -1) { |
fab4cb00fe5b
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parents:
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diff
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|
162 ngx_log_error(NGX_LOG_ALERT, log, err, "rfork() failed"); |
fab4cb00fe5b
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parents:
3
diff
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|
163 |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
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3
diff
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|
164 } else { |
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
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parents:
diff
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165 *tid = id; |
272
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parents:
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166 nthreads = (ngx_freebsd_kern_usrstack - stack_top) |
d4e65d74db9f
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parents:
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|
167 / ngx_thread_stack_size; |
266
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parents:
208
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|
168 tids[nthreads] = id; |
84
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parents:
3
diff
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|
169 |
461 | 170 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "rfork()ed thread: %P", id); |
84
fab4cb00fe5b
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parents:
3
diff
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|
171 } |
3
34a521b1a148
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parents:
diff
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|
172 |
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173 return err; |
34a521b1a148
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
174 } |
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
175 |
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parents:
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|
176 |
270
7bb9562216ce
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parents:
267
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|
177 ngx_int_t ngx_init_threads(int n, size_t size, ngx_cycle_t *cycle) |
3
34a521b1a148
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parents:
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|
178 { |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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375
diff
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|
179 char *red_zone, *zone; |
d0451e402e27
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375
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|
180 size_t len; |
d0451e402e27
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375
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|
181 ngx_int_t i; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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|
182 struct sigaction sa; |
d0451e402e27
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375
diff
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|
183 |
d0451e402e27
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parents:
375
diff
changeset
|
184 max_threads = n + 1; |
84
fab4cb00fe5b
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Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
185 |
376
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parents:
375
diff
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|
186 for (i = 0; i < n; i++) { |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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parents:
375
diff
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|
187 ngx_memzero(&sa, sizeof(struct sigaction)); |
d0451e402e27
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|
188 sa.sa_handler = SIG_IGN; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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parents:
375
diff
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|
189 sigemptyset(&sa.sa_mask); |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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parents:
375
diff
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|
190 if (sigaction(NGX_CV_SIGNAL, &sa, NULL) == -1) { |
d0451e402e27
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parents:
375
diff
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|
191 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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parents:
375
diff
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|
192 "sigaction(%d, SIG_IGN) failed", NGX_CV_SIGNAL); |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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375
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|
193 return NGX_ERROR; |
d0451e402e27
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375
diff
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|
194 } |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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parents:
375
diff
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|
195 } |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
196 |
272
d4e65d74db9f
nginx-0.0.2-2004-03-01-00:03:02 import
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parents:
271
diff
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|
197 len = sizeof(ngx_freebsd_kern_usrstack); |
d4e65d74db9f
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271
diff
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198 if (sysctlbyname("kern.usrstack", &ngx_freebsd_kern_usrstack, &len, |
d4e65d74db9f
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parents:
271
diff
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|
199 NULL, 0) == -1) |
d4e65d74db9f
nginx-0.0.2-2004-03-01-00:03:02 import
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parents:
271
diff
changeset
|
200 { |
270
7bb9562216ce
nginx-0.0.2-2004-02-25-23:16:15 import
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parents:
267
diff
changeset
|
201 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
202 "sysctlbyname(kern.usrstack) failed"); |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
203 return NGX_ERROR; |
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
204 } |
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
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parents:
diff
changeset
|
205 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
206 /* the main thread stack red zone */ |
346
55e496a8ece3
nginx-0.0.3-2004-06-06-23:49:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
305
diff
changeset
|
207 rz_size = ngx_pagesize; |
272
d4e65d74db9f
nginx-0.0.2-2004-03-01-00:03:02 import
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parents:
271
diff
changeset
|
208 red_zone = ngx_freebsd_kern_usrstack - (size + rz_size); |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
209 |
270
7bb9562216ce
nginx-0.0.2-2004-02-25-23:16:15 import
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parents:
267
diff
changeset
|
210 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0, |
461 | 211 "usrstack: %p red zone: %p", |
272
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nginx-0.0.2-2004-03-01-00:03:02 import
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parents:
271
diff
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|
212 ngx_freebsd_kern_usrstack, red_zone); |
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
213 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
214 zone = mmap(red_zone, rz_size, PROT_NONE, MAP_ANON, -1, 0); |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
215 if (zone == MAP_FAILED) { |
270
7bb9562216ce
nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
267
diff
changeset
|
216 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
461 | 217 "mmap(%p:%uz, PROT_NONE, MAP_ANON) red zone failed", |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
218 red_zone, rz_size); |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
219 return NGX_ERROR; |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
220 } |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
221 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
222 if (zone != red_zone) { |
270
7bb9562216ce
nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
267
diff
changeset
|
223 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, |
461 | 224 "red zone %p address was changed to %p", red_zone, zone); |
225 return NGX_ERROR; | |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
226 } |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
227 |
461 | 228 /* create the thread errno' array */ |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
229 |
270
7bb9562216ce
nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
267
diff
changeset
|
230 if (!(errnos = ngx_calloc(n * sizeof(int), cycle->log))) { |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
231 return NGX_ERROR; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
232 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
233 |
461 | 234 /* create the thread tids array */ |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
235 |
270
7bb9562216ce
nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
267
diff
changeset
|
236 if (!(tids = ngx_calloc((n + 1) * sizeof(ngx_tid_t), cycle->log))) { |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
237 return NGX_ERROR; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
238 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
239 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
240 tids[0] = ngx_pid; |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
241 |
461 | 242 /* create the thread tls' array */ |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
243 |
381
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
244 ngx_tls = ngx_calloc(NGX_THREAD_KEYS_MAX * (n + 1) * sizeof(void *), |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
245 cycle->log); |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
246 if (ngx_tls == NULL) { |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
247 return NGX_ERROR; |
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
248 } |
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
249 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
250 nthreads = 1; |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
251 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
252 last_stack = zone + rz_size; |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
253 usable_stack_size = size; |
272
d4e65d74db9f
nginx-0.0.2-2004-03-01-00:03:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
271
diff
changeset
|
254 ngx_thread_stack_size = size + rz_size; |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
255 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
256 /* allow the spinlock in libc malloc() */ |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
257 __isthreaded = 1; |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
258 |
271
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
259 ngx_threaded = 1; |
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
260 |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
261 return NGX_OK; |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
262 } |
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
263 |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
264 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
265 ngx_tid_t ngx_thread_self() |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
266 { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
267 int tid; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
268 ngx_tid_t pid; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
269 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
270 tid = ngx_gettid(); |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
271 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
272 if (tids == NULL) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
273 return ngx_pid; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
274 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
275 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
276 return tids[tid]; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
277 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
278 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
279 |
461 | 280 ngx_err_t ngx_thread_key_create(ngx_tls_key_t *key) |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
281 { |
381
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
282 if (nkeys >= NGX_THREAD_KEYS_MAX) { |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
283 return NGX_ENOMEM; |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
284 } |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
285 |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
286 *key = nkeys++; |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
287 |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
288 return 0; |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
289 } |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
290 |
381
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
291 |
461 | 292 ngx_err_t ngx_thread_set_tls(ngx_tls_key_t key, void *value) |
381
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
293 { |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
294 if (key >= NGX_THREAD_KEYS_MAX) { |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
295 return NGX_EINVAL; |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
296 } |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
297 |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
298 ngx_tls[key * NGX_THREAD_KEYS_MAX + ngx_gettid()] = value; |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
299 return 0; |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
300 } |
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
301 |
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
302 |
461 | 303 ngx_mutex_t *ngx_mutex_init(ngx_log_t *log, ngx_uint_t flags) |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
304 { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
305 ngx_mutex_t *m; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
306 union semun op; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
307 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
308 if (!(m = ngx_alloc(sizeof(ngx_mutex_t), log))) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
309 return NULL; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
310 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
311 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
312 m->lock = 0; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
313 m->log = log; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
314 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
315 if (flags & NGX_MUTEX_LIGHT) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
316 m->semid = -1; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
317 return m; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
318 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
319 |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
320 m->semid = semget(IPC_PRIVATE, 1, SEM_R|SEM_A); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
321 if (m->semid == -1) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
322 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "semget() failed"); |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
323 return NULL; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
324 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
325 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
326 op.val = 0; |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
327 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
328 if (semctl(m->semid, 0, SETVAL, op) == -1) { |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
329 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "semctl(SETVAL) failed"); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
330 |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
331 if (semctl(m->semid, 0, IPC_RMID) == -1) { |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
332 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
333 "semctl(IPC_RMID) failed"); |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
334 } |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
335 |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
336 return NULL; |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
337 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
338 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
339 return m; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
340 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
341 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
342 |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
343 void ngx_mutex_destroy(ngx_mutex_t *m) |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
344 { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
345 if (semctl(m->semid, 0, IPC_RMID) == -1) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
346 ngx_log_error(NGX_LOG_ALERT, m->log, ngx_errno, |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
347 "semctl(IPC_RMID) failed"); |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
348 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
349 |
267
83205e0b5522
nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
266
diff
changeset
|
350 ngx_free((void *) m); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
351 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
352 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
353 |
272
d4e65d74db9f
nginx-0.0.2-2004-03-01-00:03:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
271
diff
changeset
|
354 ngx_int_t ngx_mutex_dolock(ngx_mutex_t *m, ngx_int_t try) |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
355 { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
356 uint32_t lock, new, old; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
357 ngx_uint_t tries; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
358 struct sembuf op; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
359 |
271
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
360 if (!ngx_threaded) { |
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
361 return NGX_OK; |
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
362 } |
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
363 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
364 #if (NGX_DEBUG) |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
365 if (try) { |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
366 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 367 "try lock mutex %p lock:%XD", m, m->lock); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
368 } else { |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
369 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 370 "lock mutex %p lock:%XD", m, m->lock); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
371 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
372 #endif |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
373 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
374 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
375 tries = 0; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
376 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
377 for ( ;; ) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
378 if (old & NGX_MUTEX_LOCK_BUSY) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
379 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
380 if (try) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
381 return NGX_AGAIN; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
382 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
383 |
469 | 384 if (ngx_ncpu > 1 && tries++ < 1000) { |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
385 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
386 /* the spinlock is used only on the SMP system */ |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
387 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
388 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
389 continue; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
390 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
391 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
392 if (m->semid == -1) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
393 sched_yield(); |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
394 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
395 tries = 0; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
396 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
397 continue; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
398 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
399 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
400 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 401 "mutex %p lock:%XD", m, m->lock); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
402 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
403 /* |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
404 * The mutex is locked so we increase a number |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
405 * of the threads that are waiting on the mutex |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
406 */ |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
407 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
408 lock = old + 1; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
409 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
410 if ((lock & ~NGX_MUTEX_LOCK_BUSY) > nthreads) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
411 ngx_log_error(NGX_LOG_ALERT, m->log, ngx_errno, |
461 | 412 "%D threads wait for mutex %p, " |
413 "while only %ui threads are available", | |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
414 lock & ~NGX_MUTEX_LOCK_BUSY, m, nthreads); |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
415 return NGX_ERROR; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
416 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
417 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
418 if (ngx_atomic_cmp_set(&m->lock, old, lock)) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
419 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
420 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 421 "wait mutex %p lock:%XD", m, m->lock); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
422 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
423 /* |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
424 * The number of the waiting threads has been increased |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
425 * and we would wait on the SysV semaphore. |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
426 * A semaphore should wake up us more efficiently than |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
427 * a simple sched_yield() or usleep(). |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
428 */ |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
429 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
430 op.sem_num = 0; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
431 op.sem_op = -1; |
375
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
372
diff
changeset
|
432 op.sem_flg = 0; |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
433 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
434 if (semop(m->semid, &op, 1) == -1) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
435 ngx_log_error(NGX_LOG_ALERT, m->log, ngx_errno, |
461 | 436 "semop() failed while waiting on mutex %p", m); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
437 return NGX_ERROR; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
438 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
439 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
440 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 441 "mutex waked up %p lock:%XD", m, m->lock); |
372
c9fdfccebc49
nginx-0.0.7-2004-06-29-01:03:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
371
diff
changeset
|
442 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
443 tries = 0; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
444 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
445 continue; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
446 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
447 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
448 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
449 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
450 } else { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
451 lock = old | NGX_MUTEX_LOCK_BUSY; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
452 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
453 if (ngx_atomic_cmp_set(&m->lock, old, lock)) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
454 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
455 /* we locked the mutex */ |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
456 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
457 break; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
458 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
459 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
460 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
461 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
462 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
463 if (tries++ > 1000) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
464 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
465 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 466 "mutex %p is contested", m); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
467 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
468 /* the mutex is probably contested so we are giving up now */ |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
469 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
470 sched_yield(); |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
471 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
472 tries = 0; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
473 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
474 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
475 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
476 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
477 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 478 "mutex %p is locked, lock:%XD", m, m->lock); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
479 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
480 return NGX_OK; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
481 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
482 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
483 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
484 ngx_int_t ngx_mutex_unlock(ngx_mutex_t *m) |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
485 { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
486 uint32_t lock, new, old; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
487 struct sembuf op; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
488 |
271
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
489 if (!ngx_threaded) { |
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
490 return NGX_OK; |
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
491 } |
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
492 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
493 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
494 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
495 if (!(old & NGX_MUTEX_LOCK_BUSY)) { |
272
d4e65d74db9f
nginx-0.0.2-2004-03-01-00:03:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
271
diff
changeset
|
496 ngx_log_error(NGX_LOG_ALERT, m->log, 0, |
461 | 497 "trying to unlock the free mutex %p", m); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
498 return NGX_ERROR; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
499 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
500 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
501 /* free the mutex */ |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
502 |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
503 #if 0 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
504 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 505 "unlock mutex %p lock:%XD", m, old); |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
506 #endif |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
507 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
508 for ( ;; ) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
509 lock = old & ~NGX_MUTEX_LOCK_BUSY; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
510 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
511 if (ngx_atomic_cmp_set(&m->lock, old, lock)) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
512 break; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
513 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
514 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
515 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
516 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
517 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
518 if (m->semid == -1) { |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
519 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 520 "mutex %p is unlocked", m); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
521 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
522 return NGX_OK; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
523 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
524 |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
525 /* check whether we need to wake up a waiting thread */ |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
526 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
527 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
528 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
529 for ( ;; ) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
530 if (old & NGX_MUTEX_LOCK_BUSY) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
531 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
532 /* the mutex is just locked by another thread */ |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
533 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
534 break; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
535 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
536 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
537 if (old == 0) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
538 break; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
539 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
540 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
541 /* there are the waiting threads */ |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
542 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
543 lock = old - 1; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
544 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
545 if (ngx_atomic_cmp_set(&m->lock, old, lock)) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
546 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
547 /* wake up the thread that waits on semaphore */ |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
548 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
549 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 550 "wake up mutex %p", m); |
372
c9fdfccebc49
nginx-0.0.7-2004-06-29-01:03:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
371
diff
changeset
|
551 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
552 op.sem_num = 0; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
553 op.sem_op = 1; |
375
744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
372
diff
changeset
|
554 op.sem_flg = 0; |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
555 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
556 if (semop(m->semid, &op, 1) == -1) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
557 ngx_log_error(NGX_LOG_ALERT, m->log, ngx_errno, |
461 | 558 "semop() failed while waking up on mutex %p", m); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
559 return NGX_ERROR; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
560 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
561 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
562 break; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
563 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
564 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
565 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
566 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
567 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
568 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 569 "mutex %p is unlocked", m); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
570 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
571 return NGX_OK; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
572 } |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
573 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
574 |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
575 ngx_cond_t *ngx_cond_init(ngx_log_t *log) |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
576 { |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
577 ngx_cond_t *cv; |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
578 |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
579 if (!(cv = ngx_alloc(sizeof(ngx_cond_t), log))) { |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
580 return NULL; |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
581 } |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
582 |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
583 cv->signo = NGX_CV_SIGNAL; |
469 | 584 cv->tid = -1; |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
585 cv->log = log; |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
586 cv->kq = -1; |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
587 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
588 return cv; |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
589 } |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
590 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
591 |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
592 void ngx_cond_destroy(ngx_cond_t *cv) |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
593 { |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
594 if (close(cv->kq) == -1) { |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
595 ngx_log_error(NGX_LOG_ALERT, cv->log, ngx_errno, |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
596 "kqueue close() failed"); |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
597 } |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
598 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
599 ngx_free(cv); |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
600 } |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
601 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
602 |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
603 ngx_int_t ngx_cond_wait(ngx_cond_t *cv, ngx_mutex_t *m) |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
604 { |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
605 int n; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
606 ngx_err_t err; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
607 struct kevent kev; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
608 struct timespec ts; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
609 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
610 if (cv->kq == -1) { |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
611 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
612 /* |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
613 * We have to add the EVFILT_SIGNAL filter in the rfork()ed thread. |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
614 * Otherwise the thread would not get a signal event. |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
615 * |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
616 * However, we have not to open the kqueue in the thread, |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
617 * it is simply handy do it together. |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
618 */ |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
619 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
620 cv->kq = kqueue(); |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
621 if (cv->kq == -1) { |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
622 ngx_log_error(NGX_LOG_ALERT, cv->log, ngx_errno, "kqueue() failed"); |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
623 return NGX_ERROR; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
624 } |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
625 |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
626 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cv->log, 0, |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
627 "cv kq:%d signo:%d", cv->kq, cv->signo); |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
628 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
629 kev.ident = cv->signo; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
630 kev.filter = EVFILT_SIGNAL; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
631 kev.flags = EV_ADD; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
632 kev.fflags = 0; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
633 kev.data = 0; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
634 kev.udata = NULL; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
635 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
636 ts.tv_sec = 0; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
637 ts.tv_nsec = 0; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
638 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
639 if (kevent(cv->kq, &kev, 1, NULL, 0, &ts) == -1) { |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
640 ngx_log_error(NGX_LOG_ALERT, cv->log, ngx_errno, "kevent() failed"); |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
641 return NGX_ERROR; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
642 } |
469 | 643 |
644 cv->tid = ngx_thread_self(); | |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
645 } |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
646 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
647 if (ngx_mutex_unlock(m) == NGX_ERROR) { |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
648 return NGX_ERROR; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
649 } |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
650 |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
651 ngx_log_debug3(NGX_LOG_DEBUG_CORE, cv->log, 0, |
461 | 652 "cv %p wait, kq:%d, signo:%d", cv, cv->kq, cv->signo); |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
653 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
654 for ( ;; ) { |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
655 n = kevent(cv->kq, NULL, 0, &kev, 1, NULL); |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
656 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
657 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cv->log, 0, |
461 | 658 "cv %p kevent: %d", cv, n); |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
659 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
660 if (n == -1) { |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
661 err = ngx_errno; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
662 ngx_log_error((err == NGX_EINTR) ? NGX_LOG_INFO : NGX_LOG_ALERT, |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
663 cv->log, ngx_errno, |
461 | 664 "kevent() failed while waiting condition variable %p", |
665 cv); | |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
666 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
667 if (err == NGX_EINTR) { |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
668 break; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
669 } |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
670 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
671 return NGX_ERROR; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
672 } |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
673 |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
674 if (n == 0) { |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
675 ngx_log_error(NGX_LOG_ALERT, cv->log, 0, |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
676 "kevent() returned no events " |
461 | 677 "while waiting condition variable %p", |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
678 cv); |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
679 continue; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
680 } |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
681 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
682 if (kev.filter != EVFILT_SIGNAL) { |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
683 ngx_log_error(NGX_LOG_ALERT, cv->log, 0, |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
684 "kevent() returned unexpected events: %d " |
461 | 685 "while waiting condition variable %p", |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
686 kev.filter, cv); |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
687 continue; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
688 } |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
689 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
690 if (kev.ident != (uintptr_t) cv->signo) { |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
691 ngx_log_error(NGX_LOG_ALERT, cv->log, 0, |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
692 "kevent() returned unexpected signal: %d ", |
461 | 693 "while waiting condition variable %p", |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
694 kev.ident, cv); |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
695 continue; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
696 } |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
697 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
698 break; |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
699 } |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
700 |
461 | 701 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cv->log, 0, "cv %p is waked up", cv); |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
702 |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
703 if (ngx_mutex_lock(m) == NGX_ERROR) { |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
704 return NGX_ERROR; |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
705 } |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
706 |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
707 return NGX_OK; |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
708 } |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
709 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
710 |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
711 ngx_int_t ngx_cond_signal(ngx_cond_t *cv) |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
712 { |
377
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
713 ngx_err_t err; |
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
714 |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
715 ngx_log_debug3(NGX_LOG_DEBUG_CORE, cv->log, 0, |
461 | 716 "cv %p to signal %P %d", |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
717 cv, cv->tid, cv->signo); |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
718 |
469 | 719 if (cv->tid == -1) { |
720 return NGX_OK; | |
721 } | |
722 | |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
723 if (kill(cv->tid, cv->signo) == -1) { |
377
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
724 |
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
725 err = ngx_errno; |
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
726 |
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
727 ngx_log_error(NGX_LOG_ALERT, cv->log, err, |
461 | 728 "kill() failed while signaling condition variable %p", cv); |
377
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
729 |
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
730 if (err == NGX_ESRCH) { |
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
731 cv->tid = -1; |
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
732 } |
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
733 |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
734 return NGX_ERROR; |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
735 } |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
736 |
461 | 737 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cv->log, 0, "cv %p is signaled", cv); |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
738 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
739 return NGX_OK; |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
740 } |