Mercurial > hg > nginx
annotate src/os/unix/ngx_sunpro_amd64.il @ 9139:d7dec2970161
QUIC: always add ACK frame to the queue head.
Previously it was added to the tail as all other frames. However, if the
amount of queued data is large, it could delay the delivery of ACK, which
could trigger frames retransmissions and slow down the connection.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Thu, 10 Aug 2023 20:11:29 +0400 |
parents | 2cd019520210 |
children |
rev | line source |
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561 | 1 / |
2 / Copyright (C) Igor Sysoev | |
4412 | 3 / Copyright (C) Nginx, Inc. |
561 | 4 / |
5 | |
6 / ngx_atomic_uint_t ngx_atomic_cmp_set(ngx_atomic_t *lock, | |
7 / ngx_atomic_uint_t old, ngx_atomic_uint_t set); | |
8 / | |
9 / the arguments are passed in %rdi, %rsi, %rdx | |
10 / the result is returned in the %rax | |
11 | |
12 .inline ngx_atomic_cmp_set,0 | |
13 movq %rsi, %rax | |
14 lock | |
15 cmpxchgq %rdx, (%rdi) | |
16 setz %al | |
17 movzbq %al, %rax | |
18 .end | |
19 | |
20 | |
21 / ngx_atomic_int_t ngx_atomic_fetch_add(ngx_atomic_t *value, | |
22 / ngx_atomic_int_t add); | |
23 / | |
24 / the arguments are passed in %rdi, %rsi | |
25 / the result is returned in the %rax | |
26 | |
27 .inline ngx_atomic_fetch_add,0 | |
28 movq %rsi, %rax | |
29 lock | |
30 xaddq %rax, (%rdi) | |
31 .end | |
1309 | 32 |
33 | |
34 / ngx_cpu_pause() | |
3479
bfd1912e55a9
use "rep; nop" instead of "pause" on Solaris/amd64
Igor Sysoev <igor@sysoev.ru>
parents:
1309
diff
changeset
|
35 / |
bfd1912e55a9
use "rep; nop" instead of "pause" on Solaris/amd64
Igor Sysoev <igor@sysoev.ru>
parents:
1309
diff
changeset
|
36 / the "rep; nop" is used instead of "pause" to avoid the "[ PAUSE ]" hardware |
bfd1912e55a9
use "rep; nop" instead of "pause" on Solaris/amd64
Igor Sysoev <igor@sysoev.ru>
parents:
1309
diff
changeset
|
37 / capability added by linker because Solaris/amd64 does not know about it: |
bfd1912e55a9
use "rep; nop" instead of "pause" on Solaris/amd64
Igor Sysoev <igor@sysoev.ru>
parents:
1309
diff
changeset
|
38 / |
bfd1912e55a9
use "rep; nop" instead of "pause" on Solaris/amd64
Igor Sysoev <igor@sysoev.ru>
parents:
1309
diff
changeset
|
39 / ld.so.1: nginx: fatal: hardware capability unsupported: 0x2000 [ PAUSE ] |
1309 | 40 |
6474 | 41 .inline ngx_cpu_pause,0 |
42 rep; nop | |
43 .end |