// Main message loop
while (true) {
if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
if (msg.message == WM_QUIT)
break;
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
return msg.message;
CPU time in very basic win32 code
Author
Why does the code below use 99% of the CPUs time in the task manager when an application like the first tutorial in the Direct3D section on two-kings.de simply runs idle taking up 0%? They are both simple applications that create a window and have a window procedure and message loop. I can''t pick out what is causing the difference. Thanks for any help.
Sleep(1); will reduce the cpu usage... though its not really recommended. 99% cpu usage is fine for a game.
Well, after an admittedly quick glance at the tutorial, their main loop uses GetMessage instead of PeekMessage. GetMessage blocks until there is a message to process, so your not really eating much processor time. PeekMessage returns immediately whether there was a message or not, so your loop is running continuously. But as the AP already noted, 99% for a game really isn't a big deal...
[edited by - rimtgd on July 27, 2003 2:04:09 AM]
[edited by - rimtgd on July 27, 2003 2:04:09 AM]
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