Thread: Portable nonbusy hold?

  1. #1
    Evil Member
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    Jan 2002
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    Portable nonbusy hold?

    Can it be done?

    Background:

    As we all know, there are a gajillion ways of inserting delay into a program, from superfluous for loops that do nothing, to the more sophisticated time(NULL)-split>howLong method, and then there are nonportables such as windows.h's Sleep(), and the myriad of sleep()'s, delay()'s and _delay()'s found in compilers.

    My question:

    Is there any way to make a portable, nonbusy hold?

    My current code does this:

    Code:
    void holdOnThere(int howLongToWait) { 
    
    time_t split = time(NULL); 
    
    while (time(NULL) - split < howLongToWait) { } 
    
    return; 
    
    }
    Which is a portable(mostly) but busy wait. I think windows.h's Sleep() is nonbusy, but it isn't portable.

    Is there any way to get both in one construct, and if so, how?

  2. #2
    Skunkmeister Stoned_Coder's Avatar
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    AFAIK its not possible to do this in a portable way. You will always need to use the features of your chosen operating system to do this.
    Free the weed!! Class B to class C is not good enough!!
    And the FAQ is here :- http://faq.cprogramming.com/cgi-bin/smartfaq.cgi

  3. #3
    Evil Member
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    That was my interpretation as well

    But the only dumb question is the one not asked...

    I was considering maybe using a wrapper function and conditional compilation directives to simulate portability, but I'd still need the appropriate calls for each OS.

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