millisecond sleep function ?

[ih8censorship]

I'm wanting a cross platform function that will stop the calling thread's execution for a given amount of time. I know Windows has the Sleep() function and that Linux has the usleep() function. The problem comes when trying to make them both behave in similar ways- Sleep deals in milliseconds, usleep deals in microseconds. So that pretty much limits me to using a function with a minimum of a millisecond of sleep time . So what I'm wondering is, is there a function in Linux which allready has a millisecond resolution? or do i have to just do like

Code:

usleep(amount_of_milliseconds*1000);

[ih8censorship]

here is what i did:

http://steppingstone.svn.sourceforge.net/viewvc/steppingstone/src/sleep.cpp?revision=5&view=markup

Now about putting the headers in the namespace too- was that necessary or could i have just prefixed calls to the Sleep and usleep with :: and gotten away with it? remember unistd.h has a function called "sleep" in it, so i wasn't sure if that would screw up my class's name or what.

[JoeImp]

I use wxwidgets a lot which can be used cross platform and has a Sleep() function.

http://docs.wxwidgets.org/2.8.6/wx_wxthread.html#wxthreadsleep

Takes milliseconds as an argument.

[oldneuro]

this is so easy

#ifdef _WIN32
#define SLEEP(x)   Sleep(x)
#else // _WIN32
#define SLEEP(x)   usleep(x*1000)
#endif // _WIN32

[ih8censorship]

You could, but I have two problems for that-

1. no type checking
2. bounds checking is needed for usleep there

[michaelp]

http://www.cplusplus.com/reference/clibrary/ctime/clock.html

[mleveill]

http://www.cplusplus.com/reference/clibrary/ctime/clock.html

probably unreliable if running on a multicore machine

[ih8censorship]

michaelp - Also that won't do what i intend. I wanted to halt execution of my code for a short time, rather than just having my code run a loop. Nice try anyway though 

[oldneuro]

Do I really have to spell it out?  You want type and bounds checking?

#ifdef _WIN32
#define SLEEP(x)   Sleep(x)
#else // _WIN32
#define SLEEP(x)   usleep(x*1000)
#endif // _WIN32

void mysleep (unsigned x)
{
        if (x > UPPER_LIMIT) { error(); }
        SLEEP(x);
}

[ih8censorship]

*shrug* to me, if i wrote that, it seems more like a hack I'd hope no other programmer ever touched because it seems like a violation of OO encapsulation principles. Its probably fine for C ( ), it just seems very out of place as C++. I guess those are some more reasons I prefer my way Though I fully admit i could be wrong. What does everyone else think?

[oldneuro]

right, in my mind, your answer and mine are the same.  The point is, you just make it use usleep(x*1000) on *nix and Sleep(x) on win32.  The rest is just filler, and important though it may be, the underlying solution is the same.  So, we agree.

[Joel]

I use wxwidgets a lot which can be used cross platform and has a Sleep() function.

http://docs.wxwidgets.org/2.8.6/wx_wxthread.html#wxthreadsleep

Takes milliseconds as an argument.

Also my #1 option in cross platform

[Neken]

yeah, this code should be

Code:

#include "sleep.h"

#if defined _WIN32
#include <windows.h>
#elif defined __linux__
#include <unistd.h>
#endif

void ih8sleep::sleep::milliseconds(uint32_t milsecs)
{
  #if defined _WIN32
  ::Sleep(milsecs);
  #elif defined __linux__
  ::usleep(milsecs*1000);
  #endif
}