Mercurial > hg > nginx

annotate src/os/unix/ngx_atomic.h @ 435:5cdc4838d4e8

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.0.11-2004-09-22-20:18:21 import
author Igor Sysoev <igor@sysoev.ru>
date Wed, 22 Sep 2004 16:18:21 +0000
parents 9a97dcdd2421
children da8c5707af39
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
1 #ifndef _NGX_ATOMIC_H_INCLUDED_
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
2 #define _NGX_ATOMIC_H_INCLUDED_
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
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3
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
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4
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
5 #include <ngx_config.h>
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
6 #include <ngx_core.h>
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
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7
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
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8
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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9 #if ( __i386__ || __amd64__ )
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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10
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
11 #define NGX_HAVE_ATOMIC_OPS 1
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
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12
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83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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13 typedef volatile uint32_t ngx_atomic_t;
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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14
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
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15 #if (NGX_SMP)
300
502b03d9d2a3 nginx-0.0.3-2004-03-31-00:31:58 import
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diff changeset
16 #define NGX_SMP_LOCK "lock;"
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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17 #else
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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18 #define NGX_SMP_LOCK
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
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19 #endif
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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20
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
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21
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
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22 static ngx_inline uint32_t ngx_atomic_inc(ngx_atomic_t *value)
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
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23 {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
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24 uint32_t old;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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25
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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26 __asm__ volatile (
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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27
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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diff changeset
28 NGX_SMP_LOCK
300
502b03d9d2a3 nginx-0.0.3-2004-03-31-00:31:58 import
Igor Sysoev <igor@sysoev.ru>
parents: 299
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29 " xaddl %0, %2; "
301
744965ec6275 nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 300
diff changeset
30 " incl %0; "
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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31
300
502b03d9d2a3 nginx-0.0.3-2004-03-31-00:31:58 import
Igor Sysoev <igor@sysoev.ru>
parents: 299
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32 : "=q" (old) : "0" (1), "m" (*value));
266
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33
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
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34 return old;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
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35 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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parents: 213
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36
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
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37
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
38 #if 0
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
39
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
40 static ngx_inline uint32_t ngx_atomic_dec(ngx_atomic_t *value)
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
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41 {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
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42 uint32_t old;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
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43
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
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44 __asm__ volatile (
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
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45
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
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46 NGX_SMP_LOCK
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
47 " xaddl %0, %1; "
301
744965ec6275 nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 300
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48 " decl %0; "
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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49
300
502b03d9d2a3 nginx-0.0.3-2004-03-31-00:31:58 import
Igor Sysoev <igor@sysoev.ru>
parents: 299
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50 : "=q" (old) : "0" (-1), "m" (*value));
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
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51
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
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52 return old;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
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53 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
54
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
55 #endif
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
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56
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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57
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
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58 static ngx_inline uint32_t ngx_atomic_cmp_set(ngx_atomic_t *lock,
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
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59 ngx_atomic_t old,
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
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60 ngx_atomic_t set)
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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parents: 213
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61 {
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
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62 uint32_t res;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
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63
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
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64 __asm__ volatile (
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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65
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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66 NGX_SMP_LOCK
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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67 " cmpxchgl %3, %1; "
272
d4e65d74db9f nginx-0.0.2-2004-03-01-00:03:02 import
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68 " setz %%al; "
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
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69 " movzbl %%al, %0; "
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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70
298
4a3f18406832 nginx-0.0.3-2004-03-30-10:27:36 import
Igor Sysoev <igor@sysoev.ru>
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71 : "=a" (res) : "m" (*lock), "a" (old), "q" (set));
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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72
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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73 return res;
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
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74 }
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
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75
301
744965ec6275 nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
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76
425
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
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77 #elif ( __sparc__ )
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
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78
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
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79 #define NGX_HAVE_ATOMIC_OPS 1
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80
425
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
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81 typedef volatile uint32_t ngx_atomic_t;
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
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82
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
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83
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
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parents: 373
diff changeset
84 static ngx_inline uint32_t ngx_atomic_inc(ngx_atomic_t *value)
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
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85 {
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
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86 uint32_t old, new, res;
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
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87
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
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88 old = *value;
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
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89
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
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diff changeset
90 for ( ;; ) {
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
91
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
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92 new = old + 1;
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
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93 res = new;
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
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94
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
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diff changeset
95 __asm__ volatile (
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
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96
433
9a97dcdd2421 nginx-0.0.11-2004-09-21-19:47:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 428
diff changeset
97 "casa [%1] 0x80, %2, %0"
425
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
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parents: 373
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98
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
99 : "+r" (res) : "r" (value), "r" (old));
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
100
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
101 if (res == old) {
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
102 return new;
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
103 }
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
104
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
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diff changeset
105 old = res;
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
106 }
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
107 }
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
108
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
109
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
110 static ngx_inline uint32_t ngx_atomic_cmp_set(ngx_atomic_t *lock,
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
111 ngx_atomic_t old,
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
112 ngx_atomic_t set)
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
113 {
428
5e73d0ea4dab nginx-0.0.11-2004-09-16-20:10:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 425
diff changeset
114 uint32_t res = (uint32_t) set;
425
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
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parents: 373
diff changeset
115
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
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diff changeset
116 __asm__ volatile (
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
117
433
9a97dcdd2421 nginx-0.0.11-2004-09-21-19:47:05 import
Igor Sysoev <igor@sysoev.ru>
parents: 428
diff changeset
118 "casa [%1] 0x80, %2, %0"
425
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
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parents: 373
diff changeset
119
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
120 : "+r" (res) : "r" (lock), "r" (old));
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
121
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
122 return (res == old);
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
123 }
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
124
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
125 #else
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
126
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
127 #define NGX_HAVE_ATOMIC_OPS 0
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
128
267
83205e0b5522 nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 266
diff changeset
129 typedef volatile uint32_t ngx_atomic_t;
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
130
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
131 #define ngx_atomic_inc(x) ++(*(x));
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
132
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
133 static ngx_inline uint32_t ngx_atomic_cmp_set(ngx_atomic_t *lock,
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
134 ngx_atomic_t old,
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
135 ngx_atomic_t set)
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
136 {
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
137 return 1;
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
138 }
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
139
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
140 #endif
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
141
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
142
373
018569a8f09c nginx-0.0.7-2004-06-30-19:30:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 371
diff changeset
143 void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin);
018569a8f09c nginx-0.0.7-2004-06-30-19:30:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 371
diff changeset
144
371
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 370
diff changeset
145 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1))
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 370
diff changeset
146 #define ngx_unlock(lock) *(lock) = 0
370
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 302
diff changeset
147
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 302
diff changeset
148
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
149 #endif /* _NGX_ATOMIC_H_INCLUDED_ */