T.N*_*.N. 1 c++ multithreading callback
我有一个方法,它在另一个线程上执行,然后在主线程上执行。如果完成,它会调用回调。但主线程必须等待,否则它会销毁回调想要返回的对象。
现在,为了简单起见,我有以下代码:
int main()
{
Something* s = new Something();
s.DoStuff(); // Executed on another thread
delete (s); // Has to wait for DoStuffCallback() to be executed
}
void Something::DoStuff()
{
// Does stuff
// If done, calls its callback
}
void Something::DoStuffCallback()
{
// DoStuff has finished work
}
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我怎样才能等到 DoStuffCallback() 执行然后继续主线程?
多谢!
编辑:
这对我不起作用,因为我无法访问正确的编译器。(我已经提到VS2010)
使用 Win32 事件
#include <windows.h>
int main()
{
HANDLE handle = ::CreateEvent(NULL, TRUE, FALSE, NULL);
Something s;
s.DoStuff(handle); // Store the event handle and run tasks on another thread
// Wait for the event on the main thread
::WaitForSingleObject(handle, INFINITE);
}
void Something::DoStuffCallback()
{
// DoStuff has finished work
::SetEvent(m_handle);
}
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