Win32 function for scheduled tasks in C++ - c++

Question

I have a function in C++ that needs to be called after a period of time and this task is repeated. Do you know any built-in function or sample code in Win32 or pthread?
Thanks,
Julian

Answer 1

How about SetTimer.
Create a wrapper function to use as the callback for set timer.
Wrapper function calls your function.
After your function finishes, wrapper function calls SetTimer again to re-set the timer.

Answer 2

Just as a side note, I hope that you aren't doing something in code which could be done via the OS. (I don't know enough about your requirements to say, but I thought I'd point it out).
Things such as task-scheduler (windows) are made for scheduling recurring tasks, and they often do a better job than hand-rolled solutions.

Answer 3

SetTimer!
An example:
#include <windows.h>
#include <stdio.h>
void CALLBACK scheduled_task_1 (HWND hwnd, UINT msg, UINT id, DWORD time)
{
puts("Executing scheduled_task_1 every half-second event");
}
void CALLBACK scheduled_task_2 (HWND hwnd, UINT msg, UINT id, DWORD time)
{
puts("Executing scheduled_task_2 every two seconds event");
}
void CALLBACK scheduled_task_3 (HWND hwnd, UINT msg, UINT id, DWORD time)
{
puts("Executing scheduled_task_3 24 hours event");
}
void messageLoop(void) {
MSG msg;
while (GetMessage(&msg, NULL, 0, 0) > 0)
DispatchMessage( &msg );
}
int main(void)
{
while(true)
{
SetTimer (NULL, 0, 500, scheduled_task_1); /* every half-second */
SetTimer (NULL, 0, 2000, scheduled_task_2); /* every two seconds */
SetTimer (NULL, 0, 60*60*24*1000, scheduled_task_3); /* after 24 hours or 86400000 milliseconds */
messageLoop();
}
return 0;
}