Mercurial > hg > nginx-quic
annotate src/core/ngx_spinlock.c @ 8519:5f765427c17a
Fixed SSL logging with lingering close.
Recent fixes to SSL shutdown with lingering close (554c6ae25ffc, 1.19.5)
broke logging of SSL variables. To make sure logging of SSL variables
works properly, avoid freeing c->ssl when doing an SSL shutdown before
lingering close.
Reported by Reinis Rozitis
(http://mailman.nginx.org/pipermail/nginx/2021-May/060670.html).
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 01 Jun 2021 17:37:51 +0300 |
parents | f737e406aa68 |
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rev | line source |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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11 |
563 | 12 void |
611 | 13 ngx_spinlock(ngx_atomic_t *lock, ngx_atomic_int_t value, ngx_uint_t spin) |
363
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14 { |
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16 #if (NGX_HAVE_ATOMIC_OPS) |
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611 | 18 ngx_uint_t i, n; |
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19 |
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20 for ( ;; ) { |
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21 |
611 | 22 if (*lock == 0 && ngx_atomic_cmp_set(lock, 0, value)) { |
23 return; | |
24 } | |
25 | |
26 if (ngx_ncpu > 1) { | |
27 | |
28 for (n = 1; n < spin; n <<= 1) { | |
363
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29 |
611 | 30 for (i = 0; i < n; i++) { |
31 ngx_cpu_pause(); | |
32 } | |
363
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33 |
611 | 34 if (*lock == 0 && ngx_atomic_cmp_set(lock, 0, value)) { |
35 return; | |
36 } | |
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37 } |
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38 } |
611 | 39 |
40 ngx_sched_yield(); | |
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41 } |
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42 |
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43 #else |
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44 |
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45 #if (NGX_THREADS) |
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47 #error ngx_spinlock() or ngx_atomic_cmp_set() are not defined ! |
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48 |
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49 #endif |
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51 #endif |
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53 } |