Re: [Dev-C++] sleep() for Windows XP

My information is not incorrect. Sleep does indeed sleeps, being waked
by an interrupt. Its not a busy wait loop. You can check that by
making your function call and using Sleep call.

Check processor usage and tell us your results.

2007/7/24, Adam Jones <aj...@i-...>:
> >> You Wrote:
> >>But it also eats your cpu cycles... Sleep doest consume CPU.
>
> Please reserve your comments to information that is accurate. You are giving
> the wrong information. I don't know any CPU Instruction that does not
> require cpu cycles.
> Sleep() is not some magical command, nor a cpu instruction. It is a function
> call just like any other function call. It takes a value (DWORD) and returns
> VOID. It's prototype declaration is in windows.h.
>
> If you take the time to investigate you will notice the assembler code that
> gets produced when you make this call. Better yet you could have just read
> the MSDN entry on microsoft's website and it would have told you how this
> function works. Functionally it works the same way as the function I wrote.
> It checks the clock ticks and compares them to see if the require time has
> lapse.
>
> The major difference is that my function is platform independent, and it
> does not require preprocessor commands. As you know, windows.h is only
> available on a windows platform. The function I wrote, requires only time.h
> which is a c++ library.
>
> I will even take this one step further. If you compile these two programs,
> the sizes of the files are the same (16k), and the assembler code that is
> produced is almost Identical.
>
> Program 1:
> //Source code headers
> #include <time.h>
>
> //Main program function
> int main()
> {
>     //sleep command
>     unsigned int clockTicks;
>     clock_t ticksReached;
>
>     clockTicks = 3000;
>     ticksReached = clockTicks + clock();
>     while (ticksReached > clock());
>
>
>     //Exit program
>     return 0;
> }
>
> Program 2:
>
> //Source code headers
> #include <windows.h>
>
> //Main program function
> int main()
> {
>     //sleep command
>    Sleep(300);
>
>     //Exit program
>     return 0;
> }
>
> - Adam Jones
>
>
>
> -----Original Message-----
> From: matheus ribeiro [mailto:mfr...@gm...]
> Sent: Tuesday, July 24, 2007 12:32 AM
> To: Adam Jones
> Cc: Jamiil Abduqadir; Dev Cpp MailingLinst
> Subject: Re: [Dev-C++] sleep() for Windows XP
>
> But it also eats your cpu cycles... Sleep doest consume CPU.
>
> 2007/7/23, Adam Jones <aj...@i-...>:
> > Just in case you are interested, here is a platfrom independent way to
> cause
> > your program to sleep without using sleep() or MS version Sleep(). It also
> > avoids preprocessors commands.
> >
> > #include <time.h>
> >
> > Int main()
> > {
> >
> >     unsigned int clockTicks;                            //Stores the
> amount
> > of time you want to pause execution in clock ticks
> >     clock_t ticksReached;                               //Stores the
> amount
> > of clock ticks
> >
> >     clockTicks = 3000;                          //set pause to 3 seconds
> >     ticksReached = clockTicks + clock();                //get number of
> > clocks tick since program started then add the addition wait time
> >     while (ticksReached > clock());             //loop until current clock
> > ticks equal the ticks needed to wait
> >
> >    return 0;
> > }
> >
> > It is more code, but it is platfrom independent and free of preprocessor
> > commands.....
> >
> > -Adam Jones
> >
> >
> > -----Original Message-----
> > From: dev...@li...
> > [mailto:dev...@li...] On Behalf Of Adam
> Jones
> > Sent: Monday, July 23, 2007 10:24 PM
> > To: 'Jamiil Abduqadir'; 'Dev Cpp MailingLinst'
> > Subject: Re: [Dev-C++] sleep() for Windows XP
> >
> > >>You wrote:
> > >> Does anyone know where I can find a source code for such service, so
> that
> > it is a portable sleep() function?
> >
> > Why do you feel the need to cause your program to sleep(). There may be
> > other ways of pausing executive without using a platform dependent
> command.
> > Or using #defines. If you could provide more details, that may be helpful.
> >
> > -Adam Jones
> >
> > From: dev...@li...
> > [mailto:dev...@li...] On Behalf Of Jamiil
> > Abduqadir
> > Sent: Monday, July 23, 2007 3:37 PM
> > To: Dev Cpp MailingLinst
> > Subject: [Dev-C++] sleep() for Windows XP
> >
> > Using GCC, I developed some small apps under Linux, now I am trying to
> port
> > this apps to MSWinXP, but there are some Unix functions that are not
> > availableunder MS, sleep() is one of them. Does anyone know where I can
> > find a source code for such service, so that it isa portable sleep()
> > function?
> >
> >
> >
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