Mercurial > hg > nginx
annotate src/os/unix/ngx_sunpro_atomic_sparc64.h @ 7690:8253424d1aff
Added size check to ngx_http_alloc_large_header_buffer().
This ensures that copying won't write more than the buffer size
even if the buffer comes from hc->free and it is smaller than the large
client header buffer size in the virtual host configuration. This might
happen if size of large client header buffers is different in name-based
virtual hosts, similarly to the problem with number of buffers fixed
in 6926:e662cbf1b932.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Thu, 06 Aug 2020 05:02:22 +0300 |
| parents | d620f497c50f |
| children |
| rev | line source |
|---|---|
| 561 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
| 561 | 5 */ |
| 6 | |
| 7 | |
| 8 #if (NGX_PTR_SIZE == 4) | |
| 9 #define NGX_CASA ngx_casa | |
| 10 #else | |
| 11 #define NGX_CASA ngx_casxa | |
| 12 #endif | |
| 13 | |
| 14 | |
| 15 ngx_atomic_uint_t | |
| 16 ngx_casa(ngx_atomic_uint_t set, ngx_atomic_uint_t old, ngx_atomic_t *lock); | |
| 17 | |
| 18 ngx_atomic_uint_t | |
| 19 ngx_casxa(ngx_atomic_uint_t set, ngx_atomic_uint_t old, ngx_atomic_t *lock); | |
| 20 | |
| 21 /* the code in src/os/unix/ngx_sunpro_sparc64.il */ | |
| 22 | |
| 23 | |
| 24 static ngx_inline ngx_atomic_uint_t | |
| 25 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old, | |
| 26 ngx_atomic_uint_t set) | |
| 27 { | |
|
1186
c114defa4518
fix atomic operations on sparc64 built by SunPro C
Igor Sysoev <igor@sysoev.ru>
parents:
611
diff
changeset
|
28 set = NGX_CASA(set, old, lock); |
| 561 | 29 |
| 30 return (set == old); | |
| 577 | 31 } |
| 561 | 32 |
| 33 | |
| 34 static ngx_inline ngx_atomic_int_t | |
| 35 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add) | |
| 36 { | |
| 37 ngx_atomic_uint_t old, res; | |
| 38 | |
| 39 old = *value; | |
| 40 | |
| 41 for ( ;; ) { | |
| 42 | |
| 43 res = old + add; | |
| 44 | |
|
1186
c114defa4518
fix atomic operations on sparc64 built by SunPro C
Igor Sysoev <igor@sysoev.ru>
parents:
611
diff
changeset
|
45 res = NGX_CASA(res, old, value); |
| 561 | 46 |
| 47 if (res == old) { | |
| 48 return res; | |
| 49 } | |
| 50 | |
| 51 old = res; | |
| 52 } | |
| 53 } | |
| 563 | 54 |
| 55 | |
| 56 #define ngx_memory_barrier() \ | |
| 57 __asm (".volatile"); \ | |
| 58 __asm ("membar #LoadLoad | #LoadStore | #StoreStore | #StoreLoad"); \ | |
| 59 __asm (".nonvolatile") | |
| 611 | 60 |
| 61 #define ngx_cpu_pause() |