Mercurial > hg > nginx-quic
view src/os/unix/ngx_gcc_atomic_sparc64.h @ 7247:b329c0ab1a48
Configure: restored "no-threads" in OpenSSL builds.
This was previously used, but was incorrectly removed in 83d54192e97b
while removing old threads remnants. Instead of using it conditionally
when threads are not used, we now set in unconditionally, as even with
thread pools enabled we never call OpenSSL functions in threads.
This fixes resulting binary when using --with-openssl with OpenSSL 1.1.0+
and without -lpthread linked (notably on FreeBSD without PCRE).
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 22 Mar 2018 15:56:07 +0300 |
parents | 67653855682e |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ /* * "casa [r1] 0x80, r2, r0" and * "casxa [r1] 0x80, r2, r0" do the following: * * if ([r1] == r2) { * swap(r0, [r1]); * } else { * r0 = [r1]; * } * * so "r0 == r2" means that the operation was successful. * * * The "r" means the general register. * The "+r" means the general register used for both input and output. */ #if (NGX_PTR_SIZE == 4) #define NGX_CASA "casa" #else #define NGX_CASA "casxa" #endif static ngx_inline ngx_atomic_uint_t ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old, ngx_atomic_uint_t set) { __asm__ volatile ( NGX_CASA " [%1] 0x80, %2, %0" : "+r" (set) : "r" (lock), "r" (old) : "memory"); return (set == old); } static ngx_inline ngx_atomic_int_t ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add) { ngx_atomic_uint_t old, res; old = *value; for ( ;; ) { res = old + add; __asm__ volatile ( NGX_CASA " [%1] 0x80, %2, %0" : "+r" (res) : "r" (value), "r" (old) : "memory"); if (res == old) { return res; } old = res; } } #if (NGX_SMP) #define ngx_memory_barrier() \ __asm__ volatile ( \ "membar #LoadLoad | #LoadStore | #StoreStore | #StoreLoad" \ ::: "memory") #else #define ngx_memory_barrier() __asm__ volatile ("" ::: "memory") #endif #define ngx_cpu_pause()