对于Block类的使用，需要在两个线程中配合使用：
1.线程1 中 调用block，进入等待，
2. 线程2 中调用release 进行释放
3.同时必须在 线程1执行block结束，或线程2 release结束后，调用reset ,重置阻塞器状态。
实例代码如下：
#include <iostream>
#include <string>
#include <sstream>
#include <OpenThreads/Block>
#include <OpenThreads/ScopedLock>
#include <OpenThreads/Mutex>
#include <OpenThreads/Thread>
// 线程安全输出
class SafePrint
{
public:
void print(std::string& info)
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
std::cout<< info << std::endl;
}
private:
OpenThreads::Mutex _mutex;
};
SafePrint g_print;
// block线程测试
class TestBlockThread :public OpenThreads::Thread
{
public:
TestBlockThread():_num(0) {}
virtual void run()
{
while(!testCancel())
{
_block.block();
_block.reset();
std::ostringstream info ;
info << "blockThread: waited the block release,block number:" << _num;
g_print.print(info.str());
}
}
public:
OpenThreads::Block _block;
int _num;
};
void main()
{
std::cout<< "start test Block" << std::endl;
TestBlockThread blockThread;
blockThread.start();
OpenThreads::Thread::microSleep(1000);
while(1)
{
blockThread._num +=1;
std::ostringstream info ;
info <<"main Thread release block,set block number:"<< blockThread._num;
g_print.print(info.str());
blockThread._block.release();
OpenThreads::Thread::microSleep(0);
}
}