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freeswitch_rs/include/switch_core_rwlock.c

182 lines
6.2 KiB
C

/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthm@freeswitch.org>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Anthony Minessale II <anthm@freeswitch.org>
* Michael Jerris <mike@jerris.com>
* Paul D. Tinsley <pdt at jackhammer.org>
*
*
* switch_core_rwlock.c -- Main Core Library (read / write locks)
*
*/
#include <switch.h>
#include "private/switch_core_pvt.h"
SWITCH_DECLARE(switch_status_t) switch_core_session_io_read_lock(switch_core_session_t *session)
{
switch_status_t status = SWITCH_STATUS_FALSE;
if (session->io_rwlock) {
if (switch_thread_rwlock_tryrdlock(session->io_rwlock) == SWITCH_STATUS_SUCCESS) {
status = SWITCH_STATUS_SUCCESS;
}
}
return status;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_io_write_lock(switch_core_session_t *session)
{
switch_status_t status = SWITCH_STATUS_FALSE;
if (session->io_rwlock) {
switch_thread_rwlock_wrlock(session->io_rwlock);
status = SWITCH_STATUS_SUCCESS;
}
return status;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_io_rwunlock(switch_core_session_t *session)
{
switch_status_t status = SWITCH_STATUS_FALSE;
if (session->io_rwlock) {
switch_thread_rwlock_unlock(session->io_rwlock);
status = SWITCH_STATUS_SUCCESS;
}
return status;
}
#ifdef SWITCH_DEBUG_RWLOCKS
SWITCH_DECLARE(switch_status_t) switch_core_session_perform_read_lock(switch_core_session_t *session, const char *file, const char *func, int line)
#else
SWITCH_DECLARE(switch_status_t) switch_core_session_read_lock(switch_core_session_t *session)
#endif
{
switch_status_t status = SWITCH_STATUS_FALSE;
if (session->rwlock) {
if ((status = switch_thread_rwlock_tryrdlock(session->rwlock)) == SWITCH_STATUS_SUCCESS) {
if (switch_test_flag(session, SSF_DESTROYED) || switch_channel_down_nosig(session->channel)) {
status = SWITCH_STATUS_FALSE;
if (switch_channel_test_flag(session->channel, CF_THREAD_SLEEPING)) {
#ifdef SWITCH_DEBUG_RWLOCKS
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, switch_core_session_get_uuid(session), SWITCH_LOG_ERROR, "%s %s Ping thread\n",
switch_core_session_get_uuid(session), switch_channel_get_name(session->channel));
#endif
switch_core_session_wake_session_thread(session);
}
#ifdef SWITCH_DEBUG_RWLOCKS
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, switch_core_session_get_uuid(session), SWITCH_LOG_ERROR, "%s %s Read lock FAIL\n",
switch_core_session_get_uuid(session), switch_channel_get_name(session->channel));
#endif
switch_thread_rwlock_unlock(session->rwlock);
} else {
#ifdef SWITCH_DEBUG_RWLOCKS
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, switch_core_session_get_uuid(session), SWITCH_LOG_ERROR, "%s %s Read lock ACQUIRED\n",
switch_core_session_get_uuid(session), switch_channel_get_name(session->channel));
#endif
}
}
}
return status;
}
#ifdef SWITCH_DEBUG_RWLOCKS
SWITCH_DECLARE(switch_status_t) switch_core_session_perform_read_lock_hangup(switch_core_session_t *session, const char *file, const char *func, int line)
#else
SWITCH_DECLARE(switch_status_t) switch_core_session_read_lock_hangup(switch_core_session_t *session)
#endif
{
switch_status_t status = SWITCH_STATUS_FALSE;
if (session->rwlock) {
if ((status = switch_thread_rwlock_tryrdlock(session->rwlock)) == SWITCH_STATUS_SUCCESS) {
if (switch_test_flag(session, SSF_DESTROYED) || switch_channel_get_state(session->channel) >= CS_DESTROY) {
status = SWITCH_STATUS_FALSE;
#ifdef SWITCH_DEBUG_RWLOCKS
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, switch_core_session_get_uuid(session), SWITCH_LOG_ERROR, "%s %s Read lock FAIL\n",
switch_core_session_get_uuid(session), switch_channel_get_name(session->channel));
#endif
switch_thread_rwlock_unlock(session->rwlock);
} else {
#ifdef SWITCH_DEBUG_RWLOCKS
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, switch_core_session_get_uuid(session), SWITCH_LOG_ERROR, "%s %s Read lock ACQUIRED\n",
switch_core_session_get_uuid(session), switch_channel_get_name(session->channel));
#endif
}
}
}
return status;
}
#ifdef SWITCH_DEBUG_RWLOCKS
SWITCH_DECLARE(void) switch_core_session_perform_write_lock(switch_core_session_t *session, const char *file, const char *func, int line)
{
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, switch_core_session_get_uuid(session), SWITCH_LOG_ERROR, "%s %s Write lock ACQUIRED\n",
switch_core_session_get_uuid(session), switch_channel_get_name(session->channel));
#else
SWITCH_DECLARE(void) switch_core_session_write_lock(switch_core_session_t *session)
{
#endif
switch_thread_rwlock_wrlock(session->rwlock);
}
#ifdef SWITCH_DEBUG_RWLOCKS
SWITCH_DECLARE(void) switch_core_session_perform_rwunlock(switch_core_session_t *session, const char *file, const char *func, int line)
{
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, switch_core_session_get_uuid(session), SWITCH_LOG_ERROR, "%s %s Read/Write lock CLEARED\n",
switch_core_session_get_uuid(session), switch_channel_get_name(session->channel));
#else
SWITCH_DECLARE(void) switch_core_session_rwunlock(switch_core_session_t *session)
{
#endif
switch_thread_rwlock_unlock(session->rwlock);
}
/* For Emacs:
* Local Variables:
* mode:c
* indent-tabs-mode:t
* tab-width:4
* c-basic-offset:4
* End:
* For VIM:
* vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
*/