/*
**==============================================================================
**
** Open Management Infrastructure (OMI)
**
** Copyright (c) Microsoft Corporation
**
** Licensed 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
**
** THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
** KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
** WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
** MERCHANTABLITY OR NON-INFRINGEMENT.
**
** See the Apache 2 License for the specific language governing permissions
** and limitations under the License.
**
**==============================================================================
*/
#include <common.h>
#include "atomic.h"
#if defined(MI_DEFAULT_ATOMIC_REQUIRED)
#include <pthread.h>
static pthread_mutex_t s_mutex = PTHREAD_MUTEX_INITIALIZER;
// Atomically increment x.
EXTERNC void AtomicInc(AtomicInt* x)
{
pthread_mutex_lock(&s_mutex);
(*x) ++;
pthread_mutex_unlock(&s_mutex);
}
// AtomicType decrement x and return true if it becomes zero.
EXTERNC unsigned char AtomicDec(AtomicInt* x)
{
MI_Boolean res;
pthread_mutex_lock(&s_mutex);
(*x) --;
res = (*x) == 0;
pthread_mutex_unlock(&s_mutex);
return res;
}
#endif