我正在尝试使用C++ 11中的线程库编写多线程软件。在Internet上找到的一些基本教程可以按预期进行编译和运行。但是我自己的应用程序分成多个类总是会引发异常。
有人可以告诉我应修复代码的哪一部分吗?
$ clang++ -std=c++11 -stdlib=libc++ BaseInterface.cxx -c -o BaseInterface.o
$ clang++ -std=c++11 -stdlib=libc++ SocketReceiver.cxx -c -o SocketReceiver.o
$ clang++ -std=c++11 -stdlib=libc++ main.cxx -c -o main.o
$ clang++ -std=c++11 -stdlib=libc++ main.o BaseInterface.o SocketReceiver.o -o main
$ gdb main
(gdb) run
Starting program: /Users/oxon/test/main
Reading symbols for shared libraries ++............................ done
libc++abi.dylib: terminate called throwing an exception
Program received signal SIGABRT, Aborted.
[Switching to process 859 thread 0x40b]
0x00007fff88df8212 in __pthread_kill ()
(gdb) bt
#0 0x00007fff88df8212 in __pthread_kill ()
#1 0x00007fff8bc85af4 in pthread_kill ()
#2 0x00007fff8bcc9dce in abort ()
#3 0x00007fff894d3a17 in abort_message ()
#4 0x00007fff894d13c6 in default_terminate ()
#5 0x00007fff89874887 in _objc_terminate ()
#6 0x00007fff894d13f5 in safe_handler_caller ()
#7 0x00007fff894d1450 in std::terminate ()
#8 0x00007fff894d25b7 in __cxa_throw ()
#9 0x00007fff8a9ba3b9 in std::__1::thread::join ()
#10 0x0000000100000cf0 in SocketReceiver::Receive ()
#11 0x0000000100000c6d in SocketReceiver::DoReceive ()
#12 0x0000000100001593 in _ZNSt3__114__thread_proxyINS_5tupleIJPFPvS2_ES2_EEEEES2_S2_ ()
#13 0x00007fff8bc84742 in _pthread_start ()
#14 0x00007fff8bc71181 in thread_start ()
这是OS X 10.8上的结果。带有GCC 4.4的Scientific Linux 6也提供了类似的结果。
= BaseInterface.h =
#ifndef BASE_INTERFACE_H
#define BASE_INTERFACE_H
#include "SocketReceiver.h"
class BaseInterface
{
private:
SocketReceiver* fReceiver;
public:
BaseInterface();
virtual ~BaseInterface();
virtual void Close();
virtual void Open();
;
#endif
= BaseInterface.cxx =
#include <iostream>
#include <string.h>
#include <unistd.h>
#include "BaseInterface.h"
BaseInterface::BaseInterface()
{
fReceiver = new SocketReceiver(this);
}
//______________________________________________________________________________
BaseInterface::~BaseInterface()
{
Close();
delete fReceiver;
fReceiver = 0;
}
//______________________________________________________________________________
void BaseInterface::Close()
{
fReceiver->Stop();
usleep(10000);
while(fReceiver->IsRunning()){
usleep(10000);
} // while
}
//______________________________________________________________________________
void BaseInterface::Open()
{
fReceiver->Start();
}
= SocketReceiver.h =
#ifndef SOCKET_RECEIVER_H
#define SOCKET_RECEIVER_H
#include <thread>
#include <mutex>
class BaseInterface;
class SocketReceiver
{
private:
BaseInterface* fInterface;
bool fIsRunning;
std::mutex fMutex;
bool fStop;
std::thread* fThread;
public:
SocketReceiver(BaseInterface* interface = 0);
virtual ~SocketReceiver();
bool IsRunning() const {return fThread ? true : false;}
static void* DoReceive(void* arg);
void Receive();
void Start();
void Stop();
};
#endif
= SocketReceiver.cxx =
#include <iostream>
#include <thread>
#include <unistd.h>
#include "BaseInterface.h"
#include "SocketReceiver.h"
SocketReceiver::SocketReceiver(BaseInterface* interface)
{
fInterface = interface;
fStop = true;
fThread = 0;
}
//______________________________________________________________________________
SocketReceiver::~SocketReceiver()
{
}
//______________________________________________________________________________
void* SocketReceiver::DoReceive(void* arg)
{
SocketReceiver* receiver = (SocketReceiver*)arg;
receiver->Receive();
return 0;
}
//______________________________________________________________________________
void SocketReceiver::Receive()
{
while(not fStop){
fMutex.lock();
usleep(10000);
fMutex.unlock();
} // while
fThread->join();
delete fThread;
fThread = 0;
}
//______________________________________________________________________________
void SocketReceiver::Start()
{
fStop = false;
fThread = new std::thread(DoReceive, (void*)this);
}
//______________________________________________________________________________
void SocketReceiver::Stop()
{
fStop = true;
}
= main.cxx =
#include "BaseInterface.h"
int main()
{
BaseInterface interface;
interface.Open();
interface.Close();
return 0;
}
最佳答案
您正在自己加入线程。在父线程中调用join
,就像SocketReceiver::Stop
一样。
调用join
时,它将清除基础数据。而且,如果您在正在运行的线程中调用它,那么该数据将在线程仍需要时被删除。
关于c++ - 如何避免C++ 11中<thread>引发异常?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/15267131/