[Mingw-users] sleep, usleep or nanosleep ???

[Ryan M. <ry...@pe...>]

Hi all

I am a Cygwin user and have recently needed to start using threads. I
obtained the Win32 POSIX thread library from
ftp://sources.redhat.com/pub/pthreads-win32/ and started using it fairly
successfully.

I am using the -mno-cygwin compilation option, and am currently linking only
against the mingw32/2.95.3-5 stdc++ and pthreadGC libraries.

For some of my threads I want to use sleep, usleep or nanosleep functions. I
don't really care which at the moment. If I use the function "sleep" (with
no additional headers), everything works, except the compiler complains
about implicit declaration, although linking is successful. "sleep" doesn't
appear to be defined in the mingw32 libraries (only in Cygwin libraries,
which I don't want to use).

If I declare "sleep" as unsigned int __cdecl sleep(unsigned int); the linker
gives an undefined reference error.

"usleep" seems to be mentioned in SYSCALLS.c.X under the mingw32 folders,
but it doesn't seem to be in any of the mingw32 libraries.

"nanosleep" is in the standard Cygwin <time.h>, but doesn't appear to be in
mingw32.

I'm probably doing something stupid, but I'd really need to be able to sleep
in my threads, and I'd like to know the correct way of going about it using
the mingw32 and pthread libraries.

Thanks for any replies!

Ryan Mitchley





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