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Full Discussion: while loop and CPU ..
Top Forums Programming while loop and CPU .. Post 302229414 by nivea_jmd on Wednesday 27th of August 2008 12:50:07 AM
Old 08-27-2008
while loop and CPU ..

Hello frnds..

i m using while loops in my code.. bec of that my application uses almost 90% of CPU resources.. its not lettin others applications to run..

actually i have to read some signal from serial port... n till i dont get it high or low..
i have to read that signal continuously... its for this reason i m using while loops.


while(1)
{
status=read_CTS();
if(status==1)
continue;
else if(status==0)
{

---------
some code
--------

break;
}
}


someone suggested me to use sleep in the while loop..
i cant use it bec we are workin on realtime systems...
so we usually avoid using delay n sleep....

can anyone help me on this ???

my application is on C++/fedora
 

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voice_set_playmode(3alleg4)					  Allegro manual				       voice_set_playmode(3alleg4)

NAME
voice_set_playmode - Adjusts the loop status of the specified voice. Allegro game programming library. SYNOPSIS
#include <allegro.h> void voice_set_playmode(int voice, int playmode); DESCRIPTION
Adjusts the loop status of the specified voice. This can be done while the voice is playing, so you can start a sample in looped mode (hav- ing set the loop start and end positions to the appropriate values), and then clear the loop flag when you want to end the sound, which will cause it to continue past the loop end, play the subsequent part of the sample, and finish in the normal way. The mode parameter is a bitfield containing the following values: PLAYMODE_PLAY Plays the sample a single time. This is the default if you don't set the loop flag. PLAYMODE_LOOP Loops repeatedly through the sample, jumping back to the loop start position upon reaching the loop end. PLAYMODE_FORWARD Plays the sample from beginning to end. This is the default if you don't set the backward flag. PLAYMODE_BACKWARD Reverses the direction of the sample. If you combine this with the loop flag, the sample jumps to the loop end position upon reaching the loop start (ie. you do not need to reverse the loop start and end values when you play the sample in reverse). PLAYMODE_BIDIR When used in combination with the loop flag, causes the sample to change direction each time it reaches one of the loop points, so it alternates between playing forwards and in reverse. SEE ALSO
Allegro version 4.4.2 voice_set_playmode(3alleg4)
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