我不知道为什么,但是在将我的项目中包含c ++ 11并使用std :: array<>这样的新功能之后,当我使用std :: thread时,它突然无法工作。
以下是我尝试运行的示例:
#include <iostream>
#include <string>
#include <thread>
void print_message_function(const std::string& msg);
int main()
{
std::string message1 = "Thread 1";
std::string message2 = "Thread 2";
std::thread thread1(print_message_function, message1);
std::thread thread2(print_message_function, message2);
thread1.join();
thread2.join();
}
void print_message_function(const std::string& msg)
{
std::cout << msg << std::endl;
}
编译时没有错误,运行时没有错误(也没有输出..),但是当使用调试工具时,它会在此行崩溃:
std::thread thread1(print_message_function, message1);
这是崩溃时的堆栈:
Thread [1] (Suspended: Signal 'SIGSEGV' received. Description: Segmentation fault.)
5 _dl_fixup() 0x0000003d6920df7c
4 _dl_runtime_resolve() 0x0000003d69214625
3 std::thread::_M_start_thread() 0x0000003d762b65a7
2 std::thread::thread<void (&)(std::string const&), std::string&>() /usr/include/c++/4.4.4/thread:133 0x0000000000402268
1 main() /.../Main.cpp:12 0x0000000000401e8d
为什么会这样?
答案 0 :(得分:5)
您需要在编译命令中使用-pthread
链接pthreads库。