Closing thread using ExitThread - C
- by Jamie Keeling
I have a simple program that creates a thread, loops twenty times and then makes a call to close itself and perform the necessary cleanup.
When I debug the program it reaches the ExitThread(); method and pauses, ignoring the printf(); I have set up after it to signal to me it's closed.
Is this normal or am I forgetting to do something? I'm new to threading using C.
Main()
void main()
{
Time t;
int i = 0;
StartTimer();
for(i = 0; i < 20; i++)
{
t = GetTime();
printf("%d.%.3d\n", t.seconds, t.milliseconds);
Sleep(100);
}
StopTimer();
}
Thread Creation
void StartTimer()
{
DWORD threadId;
seconds = 0;
milliseconds = 0;
// Create child thread
hThread = CreateThread(
NULL, // lpThreadAttributes (default)
0, // dwStackSize (default)
ThreadFunc, // lpStartAddress
NULL, // lpParameter
0, // dwCreationFlags
&threadId // lpThreadId (returned by function)
);
// Check child thread was created successfully
if(hThread == NULL)
{
printf("Error creating thread\n");
}
}
Thread Close
void StopTimer()
{
DWORD exitCode;
if(GetExitCodeThread(hThread,&exitCode) != 0)
{
ExitThread(exitCode);
printf("Thread closed");
if(CloseHandle(hThread))
{
printf("Handle closed");
}
}
}
