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/*
* affinity4.c
*
*
* --------------------------------------------------------------------------
*
* Pthreads-win32 - POSIX Threads Library for Win32
* Copyright(C) 1998 John E. Bossom
* Copyright(C) 1999,2012 Pthreads-win32 contributors
*
* Homepage1: http://sourceware.org/pthreads-win32/
* Homepage2: http://sourceforge.net/projects/pthreads4w/
*
* The current list of contributors is contained
* in the file CONTRIBUTORS included with the source
* code distribution. The list can also be seen at the
* following World Wide Web location:
* http://sources.redhat.com/pthreads-win32/contributors.html
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library in the file COPYING.LIB;
* if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* --------------------------------------------------------------------------
*
* Test thread CPU affinity setting.
*
*/
#include "test.h"
int
main()
{
unsigned int cpu;
cpu_set_t threadCpus;
DWORD_PTR vThreadMask;
cpu_set_t keepCpus;
pthread_t self = pthread_self();
CPU_ZERO(&keepCpus);
for (cpu = 1; cpu < sizeof(cpu_set_t)*8; cpu += 2)
{
CPU_SET(cpu, &keepCpus); /* 0b10101010101010101010101010101010 */
}
assert(pthread_getaffinity_np(self, sizeof(cpu_set_t), &threadCpus) == 0);
if (CPU_COUNT(&threadCpus) > 1)
{
CPU_AND(&threadCpus, &threadCpus, &keepCpus);
vThreadMask = SetThreadAffinityMask(GetCurrentThread(), (*(PDWORD_PTR)&threadCpus) /* Violating Opacity */);
assert(pthread_setaffinity_np(self, sizeof(cpu_set_t), &threadCpus) == 0);
vThreadMask = SetThreadAffinityMask(GetCurrentThread(), vThreadMask);
assert(vThreadMask != 0);
assert(memcmp(&vThreadMask, &threadCpus, sizeof(DWORD_PTR)) == 0);
}
return 0;
}
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