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view src/os/unix/ngx_sunpro_atomic_sparc64.h @ 140:55a211e5eeb7 NGINX_0_3_17

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nginx 0.3.17 *) Change: now on Linux configure checks the presence of epoll and sendfile64() in kernel. *) Feature: the "map" directive supports domain names in the ".domain.tld" form. *) Bugfix: the timeouts were not used in SSL handshake; bug appeared in 0.2.4. *) Bugfix: in the HTTPS protocol in the "proxy_pass" directive. *) Bugfix: when the HTTPS protocol was used in the "proxy_pass" directive the port 80 was used by default.
author Igor Sysoev <http://sysoev.ru>
date Sun, 18 Dec 2005 00:00:00 +0300
parents df17fbafec8f
children 73e8476f9142
line wrap: on
line source


/*
 * Copyright (C) Igor Sysoev
 */


#if (NGX_PTR_SIZE == 4)
#define NGX_CASA  ngx_casa
#else
#define NGX_CASA  ngx_casxa
#endif


ngx_atomic_uint_t
ngx_casa(ngx_atomic_uint_t set, ngx_atomic_uint_t old, ngx_atomic_t *lock);

ngx_atomic_uint_t
ngx_casxa(ngx_atomic_uint_t set, ngx_atomic_uint_t old, ngx_atomic_t *lock);

/* the code in src/os/unix/ngx_sunpro_sparc64.il */


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)
{
    NGX_CASA(set, old, lock);

    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;

        NGX_CASA(res, old, value);

        if (res == old) {
            return res;
        }

        old = res;
    }
}


#define ngx_memory_barrier()                                                  \
        __asm (".volatile");                                                  \
        __asm ("membar #LoadLoad | #LoadStore | #StoreStore | #StoreLoad");   \
        __asm (".nonvolatile")