Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_freebsd_rfork_thread.c @ 627:387450de0b4d release-0.3.35
nginx-0.3.35-RELEASE import
*) Bugfix: the accept-filter and the TCP_DEFER_ACCEPT option were set
for first "listen" directive only; the bug had appeared in 0.3.31.
*) Bugfix: in the "proxy_pass" directive without the URI part in a
subrequest.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 28 Mar 2006 12:24:47 +0000 |
parents | 9c2f3ed7a247 |
children | d620f497c50f |
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 |
563 | 54 int * |
55 __error() | |
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56 { |
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57 int tid; |
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58 |
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59 tid = ngx_gettid(); |
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60 |
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61 return tid ? &errnos[tid - 1] : &errno0; |
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62 } |
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63 |
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64 |
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65 /* |
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66 * __isthreaded enables the spinlocks in some libc functions, i.e. in malloc() |
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67 * and some other places. Nevertheless we protect our malloc()/free() calls |
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68 * by own mutex that is more efficient than the spinlock. |
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69 * |
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70 * _spinlock() is a weak referenced stub in src/lib/libc/gen/_spinlock_stub.c |
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71 * that does nothing. |
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72 */ |
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73 |
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74 extern int __isthreaded; |
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75 |
563 | 76 void |
77 _spinlock(ngx_atomic_t *lock) | |
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78 { |
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79 ngx_int_t tries; |
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80 |
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81 tries = 0; |
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82 |
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83 for ( ;; ) { |
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84 |
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85 if (*lock) { |
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86 if (ngx_ncpu > 1 && tries++ < 1000) { |
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87 continue; |
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88 } |
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89 |
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90 sched_yield(); |
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91 tries = 0; |
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92 |
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93 } else { |
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94 if (ngx_atomic_cmp_set(lock, 0, 1)) { |
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95 return; |
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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 |
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102 /* |
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103 * Before FreeBSD 5.1 _spinunlock() is a simple #define in |
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104 * src/lib/libc/include/spinlock.h that zeroes lock. |
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105 * |
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106 * Since FreeBSD 5.1 _spinunlock() is a weak referenced stub in |
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107 * src/lib/libc/gen/_spinlock_stub.c that does nothing. |
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108 */ |
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109 |
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110 #ifndef _spinunlock |
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111 |
563 | 112 void |
113 _spinunlock(ngx_atomic_t *lock) | |
272
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114 { |
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115 *lock = 0; |
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116 } |
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117 |
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118 #endif |
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119 |
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120 |
563 | 121 ngx_err_t |
122 ngx_create_thread(ngx_tid_t *tid, ngx_thread_value_t (*func)(void *arg), | |
123 void *arg, ngx_log_t *log) | |
3
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124 { |
461 | 125 ngx_pid_t id; |
126 ngx_err_t err; | |
127 char *stack, *stack_top; | |
84
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128 |
266
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129 if (nthreads >= max_threads) { |
86
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130 ngx_log_error(NGX_LOG_CRIT, log, 0, |
461 | 131 "no more than %ui threads can be created", max_threads); |
84
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132 return NGX_ERROR; |
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133 } |
3
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134 |
272
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135 last_stack -= ngx_thread_stack_size; |
266
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136 |
86
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137 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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138 MAP_STACK, -1, 0); |
266
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139 |
86
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140 if (stack == MAP_FAILED) { |
266
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141 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, |
461 | 142 "mmap(%p:%uz, MAP_STACK) thread stack failed", |
86
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143 last_stack, usable_stack_size); |
3973260705cc
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144 return NGX_ERROR; |
3973260705cc
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145 } |
3973260705cc
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146 |
3973260705cc
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147 if (stack != last_stack) { |
461 | 148 ngx_log_error(NGX_LOG_ALERT, log, 0, |
149 "stack %p address was changed to %p", last_stack, stack); | |
150 return NGX_ERROR; | |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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151 } |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
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|
152 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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153 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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154 |
266
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parents:
208
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|
155 ngx_log_debug2(NGX_LOG_DEBUG_CORE, log, 0, |
461 | 156 "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
diff
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|
157 |
376
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parents:
375
diff
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158 ngx_set_errno(0); |
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parents:
375
diff
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|
159 |
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160 id = rfork_thread(RFPROC|RFTHREAD|RFMEM, stack_top, |
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161 (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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162 |
266
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diff
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163 err = ngx_errno; |
3
34a521b1a148
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parents:
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164 |
84
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parents:
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diff
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|
165 if (id == -1) { |
fab4cb00fe5b
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parents:
3
diff
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|
166 ngx_log_error(NGX_LOG_ALERT, log, err, "rfork() failed"); |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
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parents:
3
diff
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|
167 |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
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parents:
3
diff
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|
168 } else { |
3
34a521b1a148
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parents:
diff
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|
169 *tid = id; |
272
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parents:
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170 nthreads = (ngx_freebsd_kern_usrstack - stack_top) |
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diff
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|
171 / ngx_thread_stack_size; |
266
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parents:
208
diff
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|
172 tids[nthreads] = id; |
84
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parents:
3
diff
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|
173 |
461 | 174 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "rfork()ed thread: %P", id); |
84
fab4cb00fe5b
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Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
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|
175 } |
3
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
176 |
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177 return err; |
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parents:
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|
178 } |
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parents:
diff
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|
179 |
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parents:
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|
180 |
563 | 181 ngx_int_t |
182 ngx_init_threads(int n, size_t size, ngx_cycle_t *cycle) | |
3
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
183 { |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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375
diff
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|
184 char *red_zone, *zone; |
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parents:
375
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|
185 size_t len; |
d0451e402e27
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parents:
375
diff
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|
186 ngx_int_t i; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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parents:
375
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|
187 struct sigaction sa; |
d0451e402e27
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parents:
375
diff
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|
188 |
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parents:
375
diff
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|
189 max_threads = n + 1; |
84
fab4cb00fe5b
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Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
190 |
376
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nginx-0.0.7-2004-07-05-10:55:54 import
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parents:
375
diff
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|
191 for (i = 0; i < n; i++) { |
d0451e402e27
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parents:
375
diff
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|
192 ngx_memzero(&sa, sizeof(struct sigaction)); |
d0451e402e27
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375
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193 sa.sa_handler = SIG_IGN; |
d0451e402e27
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parents:
375
diff
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|
194 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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195 if (sigaction(NGX_CV_SIGNAL, &sa, NULL) == -1) { |
d0451e402e27
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parents:
375
diff
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|
196 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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|
197 "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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198 return NGX_ERROR; |
d0451e402e27
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parents:
375
diff
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|
199 } |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
200 } |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
201 |
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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|
202 len = sizeof(ngx_freebsd_kern_usrstack); |
d4e65d74db9f
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271
diff
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203 if (sysctlbyname("kern.usrstack", &ngx_freebsd_kern_usrstack, &len, |
d4e65d74db9f
nginx-0.0.2-2004-03-01-00:03:02 import
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parents:
271
diff
changeset
|
204 NULL, 0) == -1) |
d4e65d74db9f
nginx-0.0.2-2004-03-01-00:03:02 import
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parents:
271
diff
changeset
|
205 { |
270
7bb9562216ce
nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
267
diff
changeset
|
206 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
|
207 "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
|
208 return NGX_ERROR; |
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
209 } |
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
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parents:
diff
changeset
|
210 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
211 /* 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
|
212 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
|
213 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
|
214 |
270
7bb9562216ce
nginx-0.0.2-2004-02-25-23:16:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
267
diff
changeset
|
215 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0, |
461 | 216 "usrstack: %p red zone: %p", |
272
d4e65d74db9f
nginx-0.0.2-2004-03-01-00:03:02 import
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parents:
271
diff
changeset
|
217 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
|
218 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
219 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
|
220 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
|
221 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
461 | 222 "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
|
223 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
|
224 return NGX_ERROR; |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
225 } |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
226 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
227 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
|
228 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, |
461 | 229 "red zone %p address was changed to %p", red_zone, zone); |
230 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
|
231 } |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
232 |
461 | 233 /* 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
|
234 |
501 | 235 errnos = ngx_calloc(n * sizeof(int), cycle->log); |
236 if (errnos == NULL) { | |
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 |
461 | 240 /* 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
|
241 |
501 | 242 tids = ngx_calloc((n + 1) * sizeof(ngx_tid_t), cycle->log); |
243 if (tids == NULL) { | |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
244 return NGX_ERROR; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
245 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
246 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
247 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
|
248 |
461 | 249 /* 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
|
250 |
381
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
251 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
|
252 cycle->log); |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
253 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
|
254 return NGX_ERROR; |
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
255 } |
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
256 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
257 nthreads = 1; |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
258 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
259 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
|
260 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
|
261 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
|
262 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
263 /* 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
|
264 __isthreaded = 1; |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
265 |
271
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
266 ngx_threaded = 1; |
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
267 |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
268 return NGX_OK; |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
269 } |
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
270 |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
271 |
563 | 272 ngx_tid_t |
273 ngx_thread_self() | |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
274 { |
501 | 275 ngx_int_t tid; |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
276 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
277 tid = ngx_gettid(); |
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 if (tids == NULL) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
280 return ngx_pid; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
281 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
282 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
283 return tids[tid]; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
284 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
285 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
286 |
563 | 287 ngx_err_t |
288 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
|
289 { |
381
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
290 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
|
291 return NGX_ENOMEM; |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
292 } |
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 *key = nkeys++; |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
295 |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
296 return 0; |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
297 } |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
298 |
381
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
299 |
563 | 300 ngx_err_t |
301 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
|
302 { |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
303 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
|
304 return NGX_EINVAL; |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
305 } |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
306 |
02a511569afb
nginx-0.0.7-2004-07-07-19:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
changeset
|
307 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
|
308 return 0; |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
309 } |
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
310 |
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
311 |
563 | 312 ngx_mutex_t * |
313 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
|
314 { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
315 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
|
316 union semun op; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
317 |
501 | 318 m = ngx_alloc(sizeof(ngx_mutex_t), log); |
319 if (m == NULL) { | |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
320 return NULL; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
321 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
322 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
323 m->lock = 0; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
324 m->log = log; |
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 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
|
327 m->semid = -1; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
328 return m; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
329 } |
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 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
|
332 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
|
333 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
|
334 return NULL; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
335 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
336 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
337 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
|
338 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
339 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
|
340 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
|
341 |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
342 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
|
343 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
|
344 "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
|
345 } |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
346 |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
347 return NULL; |
266
5238e93961a1
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|
348 } |
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parents:
208
diff
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|
349 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
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350 return m; |
5238e93961a1
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208
diff
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351 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
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parents:
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diff
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|
352 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
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353 |
563 | 354 void |
355 ngx_mutex_destroy(ngx_mutex_t *m) | |
266
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nginx-0.0.2-2004-02-23-23:57:12 import
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diff
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|
356 { |
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nginx-0.0.2-2004-02-23-23:57:12 import
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parents:
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357 if (semctl(m->semid, 0, IPC_RMID) == -1) { |
5238e93961a1
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parents:
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358 ngx_log_error(NGX_LOG_ALERT, m->log, ngx_errno, |
5238e93961a1
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parents:
208
diff
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|
359 "semctl(IPC_RMID) failed"); |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
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parents:
208
diff
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|
360 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
361 |
267
83205e0b5522
nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
266
diff
changeset
|
362 ngx_free((void *) m); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
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parents:
208
diff
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|
363 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
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parents:
208
diff
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|
364 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
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365 |
563 | 366 ngx_int_t |
367 ngx_mutex_dolock(ngx_mutex_t *m, ngx_int_t try) | |
266
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parents:
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diff
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|
368 { |
501 | 369 uint32_t lock, old; |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
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diff
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|
370 ngx_uint_t tries; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
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parents:
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371 struct sembuf op; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
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parents:
208
diff
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|
372 |
271
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
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parents:
270
diff
changeset
|
373 if (!ngx_threaded) { |
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
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diff
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|
374 return NGX_OK; |
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
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|
375 } |
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
376 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
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|
377 #if (NGX_DEBUG) |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
378 if (try) { |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
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|
379 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 380 "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
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|
381 } else { |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
382 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 383 "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
|
384 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
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parents:
208
diff
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|
385 #endif |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
386 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
387 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
388 tries = 0; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
389 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
390 for ( ;; ) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
391 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
|
392 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
393 if (try) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
394 return NGX_AGAIN; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
395 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
396 |
469 | 397 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
|
398 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
399 /* 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
|
400 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
401 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
402 continue; |
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 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
405 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
|
406 sched_yield(); |
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 tries = 0; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
409 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
410 continue; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
411 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
412 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
413 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 414 "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
|
415 |
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 * 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
|
418 * 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
|
419 */ |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
420 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
421 lock = old + 1; |
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 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
|
424 ngx_log_error(NGX_LOG_ALERT, m->log, ngx_errno, |
461 | 425 "%D threads wait for mutex %p, " |
426 "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
|
427 lock & ~NGX_MUTEX_LOCK_BUSY, m, nthreads); |
563 | 428 ngx_abort(); |
266
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 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
431 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
|
432 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
433 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 434 "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
|
435 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
436 /* |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
437 * 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
|
438 * 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
|
439 * 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
|
440 * 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
|
441 */ |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
442 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
443 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
|
444 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
|
445 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
|
446 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
447 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
|
448 ngx_log_error(NGX_LOG_ALERT, m->log, ngx_errno, |
461 | 449 "semop() failed while waiting on mutex %p", m); |
563 | 450 ngx_abort(); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
451 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
452 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
453 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 454 "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
|
455 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
456 tries = 0; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
457 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
458 continue; |
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 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
461 old = m->lock; |
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 } else { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
464 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
|
465 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
466 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
|
467 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
468 /* 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
|
469 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
470 break; |
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 |
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 if (tries++ > 1000) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
477 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
478 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 479 "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
|
480 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
481 /* 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
|
482 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
483 sched_yield(); |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
484 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
485 tries = 0; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
486 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
487 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
488 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
489 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
490 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 491 "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
|
492 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
493 return NGX_OK; |
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 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
496 |
563 | 497 void |
498 ngx_mutex_unlock(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
|
499 { |
501 | 500 uint32_t lock, old; |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
501 struct sembuf op; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
502 |
271
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
503 if (!ngx_threaded) { |
563 | 504 return; |
271
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
505 } |
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
506 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
507 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
508 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
509 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
|
510 ngx_log_error(NGX_LOG_ALERT, m->log, 0, |
461 | 511 "trying to unlock the free mutex %p", m); |
563 | 512 ngx_abort(); |
266
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 /* free the mutex */ |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
516 |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
517 #if 0 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
518 ngx_log_debug2(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 519 "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
|
520 #endif |
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
521 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
522 for ( ;; ) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
523 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
|
524 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
525 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
|
526 break; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
527 } |
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 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
530 } |
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 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
|
533 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 534 "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
|
535 |
563 | 536 return; |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
537 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
538 |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
539 /* 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
|
540 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
541 old = m->lock; |
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 for ( ;; ) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
544 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
|
545 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
546 /* 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
|
547 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
548 break; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
549 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
550 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
551 if (old == 0) { |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
552 break; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
553 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
554 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
555 /* 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
|
556 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
557 lock = old - 1; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
558 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
559 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
|
560 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
561 /* 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
|
562 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
563 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 564 "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
|
565 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
566 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
|
567 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
|
568 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
|
569 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
570 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
|
571 ngx_log_error(NGX_LOG_ALERT, m->log, ngx_errno, |
461 | 572 "semop() failed while waking up on mutex %p", m); |
563 | 573 ngx_abort(); |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
574 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
575 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
576 break; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
577 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
578 |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
579 old = m->lock; |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
580 } |
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
581 |
379
73688d5d7fc3
nginx-0.0.7-2004-07-06-20:12:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
377
diff
changeset
|
582 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, |
461 | 583 "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
|
584 |
563 | 585 return; |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
586 } |
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 |
563 | 589 ngx_cond_t * |
590 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
|
591 { |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
592 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 |
501 | 594 cv = ngx_alloc(sizeof(ngx_cond_t), log); |
595 if (cv == NULL) { | |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
596 return NULL; |
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 |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
599 cv->signo = NGX_CV_SIGNAL; |
469 | 600 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
|
601 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
|
602 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
|
603 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
604 return cv; |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
605 } |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
606 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
607 |
563 | 608 void |
609 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
|
610 { |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
611 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
|
612 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
|
613 "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
|
614 } |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
615 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
616 ngx_free(cv); |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
617 } |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
618 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
619 |
563 | 620 ngx_int_t |
621 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
|
622 { |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
623 int n; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
624 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
|
625 struct kevent kev; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
626 struct timespec ts; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
627 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
628 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
|
629 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
630 /* |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
631 * 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
|
632 * 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
|
633 * |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
634 * 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
|
635 * 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
|
636 */ |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
637 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
638 cv->kq = kqueue(); |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
639 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
|
640 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
|
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 } |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
643 |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
644 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
|
645 "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
|
646 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
647 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
|
648 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
|
649 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
|
650 kev.fflags = 0; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
651 kev.data = 0; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
652 kev.udata = NULL; |
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 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
|
655 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
|
656 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
657 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
|
658 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
|
659 return NGX_ERROR; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
660 } |
469 | 661 |
662 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
|
663 } |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
664 |
563 | 665 ngx_mutex_unlock(m); |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
666 |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
667 ngx_log_debug3(NGX_LOG_DEBUG_CORE, cv->log, 0, |
461 | 668 "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
|
669 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
670 for ( ;; ) { |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
671 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
|
672 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
673 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cv->log, 0, |
461 | 674 "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
|
675 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
676 if (n == -1) { |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
677 err = ngx_errno; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
678 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
|
679 cv->log, ngx_errno, |
461 | 680 "kevent() failed while waiting condition variable %p", |
681 cv); | |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
682 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
683 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
|
684 break; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
685 } |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
686 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
687 return NGX_ERROR; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
688 } |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
689 |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
690 if (n == 0) { |
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 no events " |
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 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 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
|
699 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
|
700 "kevent() returned unexpected events: %d " |
461 | 701 "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
|
702 kev.filter, cv); |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
703 continue; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
704 } |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
705 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
706 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
|
707 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
|
708 "kevent() returned unexpected signal: %d ", |
461 | 709 "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
|
710 kev.ident, cv); |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
711 continue; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
712 } |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
713 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
714 break; |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
715 } |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
716 |
461 | 717 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
|
718 |
563 | 719 ngx_mutex_lock(m); |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
370
diff
changeset
|
720 |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
721 return NGX_OK; |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
722 } |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
723 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
724 |
563 | 725 ngx_int_t |
726 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
|
727 { |
377
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
728 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
|
729 |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
730 ngx_log_debug3(NGX_LOG_DEBUG_CORE, cv->log, 0, |
461 | 731 "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
|
732 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
|
733 |
469 | 734 if (cv->tid == -1) { |
735 return NGX_OK; | |
736 } | |
737 | |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
738 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
|
739 |
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
740 err = ngx_errno; |
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
741 |
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
742 ngx_log_error(NGX_LOG_ALERT, cv->log, err, |
461 | 743 "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
|
744 |
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
745 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
|
746 cv->tid = -1; |
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
747 } |
41437e4fd9b4
nginx-0.0.7-2004-07-05-19:08:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
376
diff
changeset
|
748 |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
749 return NGX_ERROR; |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
750 } |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
751 |
461 | 752 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
|
753 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
754 return NGX_OK; |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
346
diff
changeset
|
755 } |