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|
/*
+-----------------------------------------------------------------------------------+
| ZMQ extension for PHP |
| Copyright (c) 2010-2016, Mikko Koppanen <mkoppanen@php.net> |
| All rights reserved. |
+-----------------------------------------------------------------------------------+
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are met: |
| * Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| * Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in the |
| documentation and/or other materials provided with the distribution. |
| * Neither the name of the copyright holder nor the |
| names of its contributors may be used to endorse or promote products |
| derived from this software without specific prior written permission. |
+-----------------------------------------------------------------------------------+
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| DISCLAIMED. IN NO EVENT SHALL MIKKO KOPPANEN BE LIABLE FOR ANY |
| DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
+-----------------------------------------------------------------------------------+
*/
#include "php_zmq.h"
#include "php_zmq_private.h"
#ifndef PHP_ZMQ_SHARED_CONTEXT_THREADS
# define PHP_ZMQ_SHARED_CONTEXT_THREADS 1
#endif
static
void *s_ctx;
static
int s_ctx_socket_count = 0;
static
int s_ctx_pid = 0;
#ifdef ZTS
static
MUTEX_T s_ctx_mutex;
static
zend_bool s_shared_ctx_init()
{
if (!s_ctx) {
s_ctx_mutex = tsrm_mutex_alloc();
s_ctx_pid = getpid();
s_ctx = zmq_init(PHP_ZMQ_SHARED_CONTEXT_THREADS);
}
return (s_ctx != NULL);
}
static
zend_bool s_shared_ctx_lock()
{
if (!s_ctx_mutex) {
return 0;
}
return tsrm_mutex_lock(s_ctx_mutex) == 0;
}
static
zend_bool s_shared_ctx_unlock()
{
if (!s_ctx_mutex) {
return 0;
}
return tsrm_mutex_unlock(s_ctx_mutex) == 0;
}
static
void s_shared_ctx_destroy()
{
if (s_shared_ctx_lock()) {
if (s_ctx && s_ctx_pid == getpid()) {
MUTEX_T tmp_mutex = s_ctx_mutex;
s_ctx_mutex = NULL;
zmq_term(s_ctx);
s_ctx = NULL;
s_ctx_pid = -1;
tsrm_mutex_unlock(tmp_mutex);
tsrm_mutex_free(tmp_mutex);
s_ctx_mutex = NULL;
s_ctx_pid = -1;
return;
}
else {
s_shared_ctx_unlock();
}
}
}
#else
static
zend_bool s_shared_ctx_init()
{
s_ctx = zmq_init(PHP_ZMQ_SHARED_CONTEXT_THREADS);
s_ctx_pid = getpid();
return (s_ctx != NULL);
}
static
zend_bool s_shared_ctx_lock()
{
return 1;
}
static
zend_bool s_shared_ctx_unlock()
{
return 1;
}
static
void s_shared_ctx_destroy()
{
if (s_ctx && s_ctx_pid == getpid()) {
zmq_term(s_ctx);
s_ctx = NULL;
s_ctx_pid = -1;
}
}
#endif
zend_bool php_zmq_shared_ctx_init()
{
return
s_shared_ctx_init();
}
void php_zmq_shared_ctx_assign_to(php_zmq_context *context)
{
if (s_shared_ctx_lock()) {
context->z_ctx = s_ctx;
s_shared_ctx_unlock();
}
}
void php_zmq_shared_ctx_destroy()
{
if (php_zmq_shared_ctx_socket_count() > 0) {
php_error_docref(NULL, E_WARNING, "php_zmq_shared_ctx_socket_count() > 0, please report a bug");
}
s_shared_ctx_destroy();
}
int php_zmq_shared_ctx_socket_count()
{
int value = 0;
if (s_shared_ctx_lock()) {
value = s_ctx_socket_count;
s_shared_ctx_unlock();
}
return value;
}
void php_zmq_shared_ctx_socket_count_incr()
{
if (s_shared_ctx_lock()) {
s_ctx_socket_count++;
s_shared_ctx_unlock();
}
}
void php_zmq_shared_ctx_socket_count_decr()
{
if (s_shared_ctx_lock()) {
s_ctx_socket_count--;
s_shared_ctx_unlock();
}
}
|
