Mercurial > hg > nginx-quic
view src/core/ngx_spinlock.c @ 375:744ccb59062d
nginx-0.0.7-2004-07-02-19:54:34 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Fri, 02 Jul 2004 15:54:34 +0000 |
parents | 018569a8f09c |
children | 5cdc4838d4e8 |
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#include <ngx_config.h> #include <ngx_core.h> void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin) { ngx_uint_t tries; tries = 0; for ( ;; ) { if (*lock) { if (ngx_ncpu > 1 && tries++ < spin) { continue; } ngx_sched_yield(); tries = 0; } else { if (ngx_atomic_cmp_set(lock, 0, 1)) { return; } } } }