Mercurial > hg > nginx
annotate src/os/unix/ngx_freebsd_rfork_thread.c @ 4244:df9d3dd8cfc0 stable-1.0
Merging r4020:
SIGWINCH/NOACCEPT signal is disabled now in non-daemon mode.
Non-daemon mode is currently used by supervisord, daemontools and so on
or during debugging. The NOACCEPT signal is only used for online upgrade
which is not supported when nginx is run under supervisord, etc.,
so this change should not break existant setups.
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Tue, 01 Nov 2011 11:26:56 +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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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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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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271
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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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parents:
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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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diff
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|
128 |
|
266
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parents:
208
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129 if (nthreads >= max_threads) { |
|
86
3973260705cc
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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; |
|
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
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parents:
3
diff
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|
133 } |
|
3
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parents:
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134 |
|
272
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135 last_stack -= ngx_thread_stack_size; |
|
266
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parents:
208
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136 |
|
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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diff
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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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parents:
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138 MAP_STACK, -1, 0); |
|
266
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parents:
208
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|
139 |
|
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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140 if (stack == MAP_FAILED) { |
|
266
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parents:
208
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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
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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|
143 last_stack, usable_stack_size); |
|
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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144 return NGX_ERROR; |
|
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
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145 } |
|
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
146 |
|
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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parents:
85
diff
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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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parents:
85
diff
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|
151 } |
|
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
152 |
|
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
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parents:
85
diff
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153 stack_top = stack + usable_stack_size; |
|
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
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|
154 |
|
266
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Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
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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
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
157 |
|
376
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
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|
158 ngx_set_errno(0); |
|
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
159 |
|
d0451e402e27
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parents:
375
diff
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160 id = rfork_thread(RFPROC|RFTHREAD|RFMEM, stack_top, |
|
d0451e402e27
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375
diff
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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
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
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|
162 |
|
266
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parents:
208
diff
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|
163 err = ngx_errno; |
|
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
164 |
|
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
165 if (id == -1) { |
|
fab4cb00fe5b
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Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
166 ngx_log_error(NGX_LOG_ALERT, log, err, "rfork() failed"); |
|
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
167 |
|
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
168 } else { |
|
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
169 *tid = id; |
|
272
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parents:
271
diff
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|
170 nthreads = (ngx_freebsd_kern_usrstack - stack_top) |
|
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parents:
271
diff
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|
171 / ngx_thread_stack_size; |
|
266
5238e93961a1
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parents:
208
diff
changeset
|
172 tids[nthreads] = id; |
|
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
173 |
| 461 | 174 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, "rfork()ed thread: %P", id); |
|
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
175 } |
|
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
176 |
|
34a521b1a148
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
177 return err; |
|
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
178 } |
|
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
179 |
|
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
180 |
| 563 | 181 ngx_int_t |
| 182 ngx_init_threads(int n, size_t size, ngx_cycle_t *cycle) | |
|
3
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nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
183 { |
|
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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parents:
375
diff
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|
184 char *red_zone, *zone; |
|
d0451e402e27
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parents:
375
diff
changeset
|
185 size_t len; |
|
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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parents:
375
diff
changeset
|
186 ngx_int_t i; |
|
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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parents:
375
diff
changeset
|
187 struct sigaction sa; |
|
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
188 |
|
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
189 max_threads = n + 1; |
|
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
190 |
|
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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parents:
375
diff
changeset
|
191 for (i = 0; i < n; i++) { |
|
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
192 ngx_memzero(&sa, sizeof(struct sigaction)); |
|
d0451e402e27
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parents:
375
diff
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|
193 sa.sa_handler = SIG_IGN; |
|
d0451e402e27
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parents:
375
diff
changeset
|
194 sigemptyset(&sa.sa_mask); |
|
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
195 if (sigaction(NGX_CV_SIGNAL, &sa, NULL) == -1) { |
|
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
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parents:
375
diff
changeset
|
196 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, |
|
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
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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parents:
375
diff
changeset
|
198 return NGX_ERROR; |
|
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
375
diff
changeset
|
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
d4e65d74db9f
nginx-0.0.2-2004-03-01-00:03:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
271
diff
changeset
|
202 len = sizeof(ngx_freebsd_kern_usrstack); |
|
d4e65d74db9f
nginx-0.0.2-2004-03-01-00:03:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
271
diff
changeset
|
203 if (sysctlbyname("kern.usrstack", &ngx_freebsd_kern_usrstack, &len, |
|
d4e65d74db9f
nginx-0.0.2-2004-03-01-00:03:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
271
diff
changeset
|
204 NULL, 0) == -1) |
|
d4e65d74db9f
nginx-0.0.2-2004-03-01-00:03:02 import
Igor Sysoev <igor@sysoev.ru>
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
Igor Sysoev <igor@sysoev.ru>
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
Igor Sysoev <igor@sysoev.ru>
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
Igor Sysoev <igor@sysoev.ru>
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
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 |
|
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
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|
350 return m; |
|
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 |
| 563 | 354 void |
| 355 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
|
356 { |
|
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
357 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
|
358 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
|
359 "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
|
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
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
363 } |
|
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
364 |
|
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
365 |
| 563 | 366 ngx_int_t |
| 367 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
|
368 { |
| 501 | 369 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
|
370 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
|
371 struct sembuf op; |
|
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
372 |
|
271
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
373 if (!ngx_threaded) { |
|
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
374 return NGX_OK; |
|
e16dfb9b9afa
nginx-0.0.2-2004-02-26-20:10:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
270
diff
changeset
|
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
changeset
|
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
changeset
|
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
changeset
|
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
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
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 } |