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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <axutil_thread.h>
#include <platforms/windows/axutil_thread_mutex_windows.h>
static axis2_status_t
thread_mutex_cleanup(
void *data)
{
axutil_thread_mutex_t *lock = NULL;
axutil_allocator_t *allocator = NULL;
if(!data)
return AXIS2_FAILURE;
lock = (axutil_thread_mutex_t *)data;
allocator = lock->allocator;
if(lock->type == thread_mutex_critical_section)
{
DeleteCriticalSection(&lock->section);
}
else
{
if(!CloseHandle(lock->handle))
{
return AXIS2_FAILURE;
}
}
AXIS2_FREE(allocator, lock);
return AXIS2_SUCCESS;
}
AXIS2_EXTERN axutil_thread_mutex_t *AXIS2_CALL
axutil_thread_mutex_create(
axutil_allocator_t * allocator,
unsigned int flags)
{
axutil_thread_mutex_t *mutex = NULL;
mutex = (axutil_thread_mutex_t *)AXIS2_MALLOC(allocator, sizeof(axutil_thread_mutex_t));
mutex->allocator = allocator;
if(flags == AXIS2_THREAD_MUTEX_DEFAULT) /*unnested */
{
/* Use an auto-reset signaled event, ready to accept one
* waiting thread.
*/
mutex->type = thread_mutex_unnested_event;
mutex->handle = CreateEvent(NULL, FALSE, TRUE, NULL);
}
else
{
/* TODO :support critical_section and nested_mutex */
}
return mutex;
}
AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_thread_mutex_lock(
axutil_thread_mutex_t * mutex)
{
if(mutex->type == thread_mutex_critical_section)
{
EnterCriticalSection(&mutex->section);
}
else
{
DWORD rv = WaitForSingleObject(mutex->handle, INFINITE);
if((rv != WAIT_OBJECT_0) && (rv != WAIT_ABANDONED))
{
return AXIS2_FAILURE;
/*can be either BUSY or an os specific error */
}
}
return AXIS2_SUCCESS;
}
AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_thread_mutex_trylock(
axutil_thread_mutex_t * mutex)
{
if(mutex->type == thread_mutex_critical_section)
{
/* TODO :implement trylock for critical section */
}
else
{
DWORD rv = WaitForSingleObject(mutex->handle, 0);
if((rv != WAIT_OBJECT_0) && (rv != WAIT_ABANDONED))
{
/*can be either BUSY or an os specific error */
return AXIS2_FAILURE;
}
}
return AXIS2_SUCCESS;
}
AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_thread_mutex_unlock(
axutil_thread_mutex_t * mutex)
{
if(mutex->type == thread_mutex_critical_section)
{
LeaveCriticalSection(&mutex->section);
}
else if(mutex->type == thread_mutex_unnested_event)
{
if(!SetEvent(mutex->handle))
{
/*os specific error */
return AXIS2_FAILURE;
}
}
else if(mutex->type == thread_mutex_nested_mutex)
{
if(!ReleaseMutex(mutex->handle))
{
/*os specific error */
return AXIS2_FAILURE;
}
}
return AXIS2_SUCCESS;
}
AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_thread_mutex_destroy(
axutil_thread_mutex_t * mutex)
{
return thread_mutex_cleanup((void *)mutex);
}
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