OpenEuphoria

Multitasking in Mac OS Gets 100% CPU

• Posted by bryanso Nov 05, 2012
• 1603 views

The following naive implementation of get_key with multitasking support causes 100% CPU in Mac OS (Mountain Lion, Eu 4.0.4). Is there a better practice? This does not cause high CPU usage in Windows 7.

Is there something I can do in Mac OS to reduce the CPU consumption?

    function editor_wait_key() 
        atom c = -1 
        while c = -1 do 
            c = get_key() 
            task_yield() 
        end while 
        return c 
    end function 

Changing task_yield to task_delay or even sleep still has the same problem:

    function editor_wait_key() 
        atom c = -1 
        while c = -1 do 
            c = get_key() 
            task_delay(0.05) 
            -- sleep(0.01) 
        end while 
        return c 
    end function 

Thanks