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/*
-- MAGMA (version 2.9.0) --
Univ. of Tennessee, Knoxville
Univ. of California, Berkeley
Univ. of Colorado, Denver
@date January 2025
@author Azzam Haidar
*/
#include "magma_internal.h"
#if defined(linux) || defined(__linux) || defined(__linux__)
#define MAGMA_OS_LINUX 1
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <unistd.h>
#include <sched.h>
#elif defined(__FreeBSD__)
#define MAGMA_OS_FREEBSD 1
#include <unistd.h>
#include <inttypes.h>
#include <sys/param.h>
#include <sys/cpuset.h>
#include <sched.h>
#elif defined( _WIN32 ) || defined( _WIN64 )
#define MAGMA_OS_WINDOWS 1
#include <Windows.h>
#elif (defined __APPLE__) || (defined macintosh) || (defined __MACOSX__)
#define MAGMA_OS_MACOS 1
#include <sys/param.h>
#include <sys/sysctl.h>
#include <mach/mach_init.h>
#include <mach/thread_policy.h>
#elif (defined _AIX)
#define MAGMA_OS_AIX 1
#else
#error "Cannot determine the OS, or OS not supported. Supported systems are: Linux, FreeBSD, Windows, MacOS X, AIX."
#endif
/***************************************************************************//**
Yield the CPU to let another thread of lower priority run,
for example, for I/O.
@ingroup magma_thread
*******************************************************************************/
magma_int_t magma_yield()
{
#if (defined MAGMA_OS_LINUX) || (defined MAGMA_OS_FREEBSD) || (defined MAGMA_OS_MACOS) || (defined MAGMA_OS_AIX)
return sched_yield();
#elif MAGMA_OS_WINDOWS
return SleepEx(0,0);
#else
return MAGMA_ERR_NOT_SUPPORTED;
#endif
}
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