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/*
* Copyright (C) Texas Instruments - http://www.ti.com/
*
* 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
*
* 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.
*/
#ifndef __MESSAGEQUEUE_H__
#define __MESSAGEQUEUE_H__
#include "DebugUtils.h"
#include <stdint.h>
#ifdef MSGQ_DEBUG
# define MSGQ_LOGDA DBGUTILS_LOGDA
# define MSGQ_LOGDB DBGUTILS_LOGDB
#else
# define MSGQ_LOGDA(str)
# define MSGQ_LOGDB(str, ...)
#endif
#define MSGQ_LOGEA DBGUTILS_LOGEA
#define MSGQ_LOGEB DBGUTILS_LOGEB
namespace Ti {
namespace Utils {
///Message type
struct Message
{
unsigned int command;
void* arg1;
void* arg2;
void* arg3;
void* arg4;
int64_t id;
};
///Message queue implementation
class MessageQueue
{
public:
MessageQueue();
~MessageQueue();
///Get a message from the queue
android::status_t get(Message*);
///Get the input file descriptor of the message queue
int getInFd();
///Set the input file descriptor for the message queue
void setInFd(int fd);
///Queue a message
android::status_t put(Message*);
///Returns if the message queue is empty or not
bool isEmpty();
void clear();
///Force whether the message queue has message or not
void setMsg(bool hasMsg=false);
///Wait for message in maximum three different queues with a timeout
static int waitForMsg(MessageQueue *queue1, MessageQueue *queue2=0, MessageQueue *queue3=0, int timeout = 0);
bool hasMsg()
{
return mHasMsg;
}
private:
int fd_read;
int fd_write;
bool mHasMsg;
};
} // namespace Utils
} // namespace Ti
#endif
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