ACE大牛们过来看看

[Gengoo]

MQ.h文件：
#ifndef MQ_H_
#define MQ_H_

#include "ace/Message_Queue.h"
#include "ace/Task.h"
#include "ace/INET_Addr.h"
#include "ace/SOCK_Stream.h"
#include "ace/SOCK_Connector.h"
#include "ace/Log_Msg.h"
#include "ace/Os.h"
#include "ace/Thread_Mutex.h"
#include "ace/Mutex.h"
#include "ace/Lock.h"
#include "ace/Addr.cpp"
#include "ace/Time_Value.cpp"
#include "ace/String_Base_Const.cpp"
#include "ace/OS_String.cpp"

class QTest
{
public:
	QTest(int num_msgs);

	int enq_msgs();

	int deq_msgs();

private:

	//定义消息队列
	ACE_Message_Queue <ACE_NULL_SYNCH> *mq_;

	//消息队列个数
	int no_msgs_;
};

#endif 


MQ.cpp文件：
#include "MQ.h"

QTest::QTest(int num_msgs) : no_msgs_(num_msgs)
{
	ACE_TRACE("QTest::QTest");

	//第一次创建消息队列定义大小
	if (! (this->mq_ = (new ACE_Message_Queue <ACE_NULL_SYNCH>() )))
	{
		ACE_DEBUG ((LM_ERROR, "Error in message queue initialization\n"));
	}
}

int QTest::enq_msgs()
{
	ACE_TRACE ("QTest::enq_msgs");

	for (int i=0; i<no_msgs_; i++)
	{
		//为每个消息创建一个消息块
		ACE_Message_Block *mb;

		//初始化消息块大小
		ACE_NEW_RETURN (mb, ACE_Message_Block (ACE_OS::strlen("This is message 1\n")), -1);

		//把数据插入到消息块
		ACE_OS::sprintf (mb->wr_ptr(), "This is message %d\n", i);

		//移动消息块的指针
		mb->wr_ptr (ACE_OS::strlen("This is message 1\n"));

		//把消息块入队
		if (this->mq_->enqueue_prio(mb) == -1)
		{
			ACE_DEBUG ((LM_ERROR, "\nCould not enqueue on to mq!!\n"));

			return -1;
		}

		ACE_DEBUG ((LM_INFO, "EQ'd data: %s\n", mb->rd_ptr() ));
	}

	//现在打印所有的消息
	this->deq_msgs();

	return 0;
}

int QTest::deq_msgs()
{
	ACE_TRACE ("QTest::dequeue_all");

	ACE_DEBUG ((LM_INFO, "No. of Messages on Q: %d Bytes on Q: %d\n", 
		mq_->message_count(), mq_->message_bytes()));

	ACE_Message_Block *mb;

	for (int i=0; i<no_msgs_; ++i)
	{
		mq_->dequeue_head(mb);

		ACE_DEBUG ((LM_INFO, "DQ'd data %s\n", mb->rd_ptr() ));

	//	mb->rd_ptr(ACE_OS::strlen(mb->rd_ptr()) + 1);

		mb->release();//每次程序运行到这里后就崩溃了。如果把此句注销， 则程序能正确输出结果
	}

	return 0;
}

int main(int argc, char *argv[])
{
	if (argc < 2)
	{
		ACE_ERROR_RETURN ((LM_ERROR, "Usage %s num_msgs", argv[0]), -1);
	}
	
	QTest test (ACE_OS::atoi(argv[1]));

	if (test.enq_msgs() == -1)
	{
		ACE_ERROR_RETURN ((LM_ERROR, "Program failure\n"), -1);
	}

	return 0;
}

很奇怪， 我在往消息队列里面插入5条数据后， 然后从消息队列里面取出并打印。但每次执行到mb->release()时就崩溃了，
查看内存， mb的内存信息是0x00982c30，同时存在内容。
EQ'd data: This is message 0

EQ'd data: This is message 1

EQ'd data: This is message 2

EQ'd data: This is message 3

EQ'd data: This is message 4

No. of Messages on Q: 5 Bytes on Q: 90
DQ'd data This is message 0

但是如果把mb->release()注释， 则程序能正常输出。
EQ'd data: This is message 0

EQ'd data: This is message 1

EQ'd data: This is message 2

EQ'd data: This is message 3

EQ'd data: This is message 4

No. of Messages on Q: 5 Bytes on Q: 90
DQ'd data This is message 0

DQ'd data This is message 1

DQ'd data This is message 2

DQ'd data This is message 3

DQ'd data This is message 4

Press any key to continue

难道这里不能用mb->release()释放掉这个消息块的内存， 如果不释放， 那岂不造成内存泄露。

请大牛们帮我看看这应该怎么处理

[Gengoo]

靠, 居然没人给我回复, 还得自己解决. 又不能给自己分

[Paradin]

忘了。帮顶。

[品茶]

Mark
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