我在 Visual Studio 11 Developer Preview 中遇到了一个错误,至少我认为这是一个错误并报告了它,但我很感兴趣是否有人知道解决方法。
当我使用std::thread
类创建多个线程时,它会导致应用程序崩溃。有时它会抛出异常,有时它会导致访问冲突,有时它会起作用。重现该错误的代码如下所示:
#include <iostream>
#include <thread>
#include <vector>
#include <Windows.h>
int _tmain(int argc, _TCHAR* argv[])
{
std::vector<std::thread*> threads;
for(int i = 0; i < 10; i++)
{
threads.push_back(new std::thread([i]
{
/*std::cout << "thread " << i << std::endl;*/
/* whatever else that is thread safe, or even an empty lambda */
}));
}
for(int i = 0; i < 10; i++)
{
threads[i]->join();
delete threads[i];
}
return 0;
}
使用静态或动态 CRT 库都没有关系(它们都是多线程的)..
错误报告
Stacktrace(抛出异常,解锁无主互斥体):
test.exe!_NMSG_WRITE(int rterrnum) Line 217 C
test.exe!abort() Line 62 C
test.exe!_Thrd_abort(const char * msg) Line 111 C
test.exe!_Mtx_unlock(_Mtx_internal_imp_t * * mtx) Line 206 C++
test.exe!_Save_state(_Mtx_internal_imp_t * * mtx, _Mtx_state * state) Line 266 C++
test.exe!do_wait(_Cnd_internal_imp_t * * cond, _Mtx_internal_imp_t * * mtx, const xtime * target) Line 103 C
test.exe!_Cnd_wait(_Cnd_internal_imp_t * * cond, _Mtx_internal_imp_t * * mtx) Line 198 C
test.exe!std::_Cnd_waitX(_Cnd_internal_imp_t * * _Cnd, _Mtx_internal_imp_t * * _Mtx) Line 94 C++
test.exe!std::_Pad::_Launch(_Thrd_imp_t * _Thr) Line 97 C++
test.exe!??$_Launch@V?$_Bind@$0A@XV<lambda_1B7F0477D0C0EDFD>@?4?wmain@U_Nil@std@@U23@U23@U23@U23@U23@U23@@std@@@std@@YAXPAU_Thrd_imp_t@@ABV?$_Bind@$0A@XV<lambda_1B7F0477D0C0EDFD>@?4?wmain@U_Nil@std@@U23@U23@U23@U23@U23@U23@@0@@Z(_Thrd_imp_t * _Thr, const std::?$_Bind@$0A@XV<lambda_1B7F0477D0C0EDFD>@?4?wmain@U_Nil@std@@U23@U23@U23@U23@U23@U23@ & _Tg) Line 207 C++
test.exe!main::main(wmain::__l5::<lambda_1B7F0477D0C0EDFD> _Fx) Line 47 C++
test.exe!wmain(int argc, wchar_t * * argv) Line 17 C++
test.exe!__tmainCRTStartup() Line 238 C
test.exe!wmainCRTStartup() Line 168 C
kernel32.dll!76d7339a() Unknown
[Frames below may be incorrect and/or missing, no symbols loaded for kernel32.dll]
ntdll.dll!77cc9ef2() Unknown
ntdll.dll!77cc9ec5() Unknown
Stacktrace(访问冲突):
test.exe!_Mtx_unlock(_Mtx_internal_imp_t * * mtx) Line 218 C++
test.exe!std::_Mtx_unlockX(_Mtx_internal_imp_t * * _Mtx) Line 84 C++
test.exe!std::_Pad::_Release() Line 105 C++
test.exe!?_Run@?$_LaunchPad@V?$_Bind@$0A@XV<lambda_1B7F0477D0C0EDFD>@?4?wmain@U_Nil@std@@U23@U23@U23@U23@U23@U23@@std@@@std@@CAIPAV12@@Z(std::?$_LaunchPad@V?$_Bind@$0A@XV<lambda_1B7F0477D0C0EDFD>@?4?wmain@U_Nil@std@@U23@U23@U23@U23@U23@U23@@std@@ * _Ln) Line 195 C++
test.exe!?_Go@?$_LaunchPad@V?$_Bind@$0A@XV<lambda_1B7F0477D0C0EDFD>@?4?wmain@U_Nil@std@@U23@U23@U23@U23@U23@U23@@std@@@std@@UAEIXZ() Line 187 C++
test.exe!_Call_func(void * _Data) Line 52 C++
test.exe!_callthreadstartex() Line 308 C
test.exe!_threadstartex(void * ptd) Line 291 C
kernel32.dll!76d7339a() Unknown
[Frames below may be incorrect and/or missing, no symbols loaded for kernel32.dll]
ntdll.dll!77cc9ef2() Unknown
ntdll.dll!77cc9ec5() Unknown
谢谢!