Which is more expensive ? Post: 302131717

Sponsored Content

Top Forums Programming Which is more expensive ? Post 302131717 by vino on Monday 13th of August 2007 10:24:55 AM

08-13-2007

Registered User

Quote:

Originally Posted by cbkihong

But isn't that this will only close fd up to 135? Smilie

My very bad.

I actually meant a loop which runs for 1024 against another loop which runs for 128 times in which 8 fd's are closed each time.

Code:

        for (int fd = 0; fd <= 1024; fd += 8)
        {
            close(fd);
            close(fd+1);
            close(fd+2);
            close(fd+3);
            close(fd+4);
            close(fd+5);
            close(fd+6);
            close(fd+7);
        }

I know the close call gets called 1024 times. But what about the looping part ? Is there any benefit at all ?

vino

View Public Profile for vino

Find all posts by vino

2 More Discussions You Might Find Interesting

1. Programming

calling pthread_self (on ubuntu), expensive?

Hi all, Is anyone aware of what operations are involved when a call to pthread_self() is made, obtaining the unique thread ID on a Ubuntu system (or even any Linux flavour)? Specifically, to retrieve the thread id, is there any locking required or atomic operations? I'm building an...

2. What is on Your Mind?

Very Expensive Running Shoes

You really should not need one third of the entire US budget to buy a pair of running shoes... even if they are name brand. What have these guys been smoking? It reminds me of the old joke... Customer: At those prices you aren't going to sell many shoes. Salesman: Ah, but all we need to do is...

LEARN ABOUT DEBIAN

voice_set_playmode

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)