Mercurial > hg > nginx
annotate src/os/unix/ngx_sunpro_x86.il @ 4340:4533d7684e14
Cache: only complain on long locked entries.
There have been multiple reports of cases where a real locked entry was
removed, resulting in a segmentation fault later in a worker which locked
the entry. It looks like default inactive timeout isn't enough in real
life.
For now just ignore such locked entries, and move them to the top of the
inactive queue to allow processing of other entries.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Mon, 12 Dec 2011 10:49:14 +0000 |
| parents | 7e02df612521 |
| children | d620f497c50f |
| rev | line source |
|---|---|
| 561 | 1 / |
| 2 / Copyright (C) Igor Sysoev | |
| 3 / | |
| 4 | |
| 5 / ngx_atomic_uint_t ngx_atomic_cmp_set(ngx_atomic_t *lock, | |
| 6 / ngx_atomic_uint_t old, ngx_atomic_uint_t set); | |
| 7 / | |
|
2818
7e02df612521
preserve Solaris binary hardware capabilities
Igor Sysoev <igor@sysoev.ru>
parents:
1309
diff
changeset
|
8 / the arguments are passed on stack (%esp), 4(%esp), 8(%esp) |
| 561 | 9 |
| 10 .inline ngx_atomic_cmp_set,0 | |
| 11 movl (%esp), %ecx | |
| 12 movl 4(%esp), %eax | |
| 13 movl 8(%esp), %edx | |
| 14 lock | |
| 15 cmpxchgl %edx, (%ecx) | |
| 16 setz %al | |
| 17 movzbl %al, %eax | |
| 18 .end | |
| 19 | |
| 20 | |
| 21 / ngx_atomic_int_t ngx_atomic_fetch_add(ngx_atomic_t *value, | |
| 22 / ngx_atomic_int_t add); | |
| 23 / | |
|
2818
7e02df612521
preserve Solaris binary hardware capabilities
Igor Sysoev <igor@sysoev.ru>
parents:
1309
diff
changeset
|
24 / the arguments are passed on stack (%esp), 4(%esp) |
| 561 | 25 |
| 26 .inline ngx_atomic_fetch_add,0 | |
| 27 movl (%esp), %ecx | |
| 28 movl 4(%esp), %eax | |
| 29 lock | |
| 30 xaddl %eax, (%ecx) | |
| 31 .end | |
| 1309 | 32 |
| 33 | |
| 34 / ngx_cpu_pause() | |
|
2818
7e02df612521
preserve Solaris binary hardware capabilities
Igor Sysoev <igor@sysoev.ru>
parents:
1309
diff
changeset
|
35 / |
|
7e02df612521
preserve Solaris binary hardware capabilities
Igor Sysoev <igor@sysoev.ru>
parents:
1309
diff
changeset
|
36 / the "rep; nop" is used instead of "pause" to avoid the "[ PAUSE ]" hardware |
|
7e02df612521
preserve Solaris binary hardware capabilities
Igor Sysoev <igor@sysoev.ru>
parents:
1309
diff
changeset
|
37 / capability added by linker because Solaris/i386 does not know about it: |
|
7e02df612521
preserve Solaris binary hardware capabilities
Igor Sysoev <igor@sysoev.ru>
parents:
1309
diff
changeset
|
38 / |
|
7e02df612521
preserve Solaris binary hardware capabilities
Igor Sysoev <igor@sysoev.ru>
parents:
1309
diff
changeset
|
39 / ld.so.1: nginx: fatal: hardware capability unsupported: 0x2000 [ PAUSE ] |
| 1309 | 40 |
| 41 .inline ngx_cpu_pause,0 | |
|
2818
7e02df612521
preserve Solaris binary hardware capabilities
Igor Sysoev <igor@sysoev.ru>
parents:
1309
diff
changeset
|
42 rep; nop |
| 1309 | 43 .end |