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/* -*- c++ -*- */
/*
* Copyright 2012 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gruel/thread.h>
#if defined(_WIN32) || defined(__WIN32__) || defined(WIN32)
#include <Windows.h>
namespace gruel {
gr_thread_t
get_current_thread_id()
{
return GetCurrentThread();
}
void
thread_bind_to_processor(unsigned int n)
{
std::vector<unsigned int> mask(1, n);
thread_bind_to_processor(get_current_thread_id(), mask);
}
void
thread_bind_to_processor(const std::vector<unsigned int> &mask)
{
thread_bind_to_processor(get_current_thread_id(), mask);
}
void
thread_bind_to_processor(gr_thread_t thread, unsigned int n)
{
std::vector<unsigned int> mask(1, n);
thread_bind_to_processor(thread, mask);
}
void
thread_bind_to_processor(gr_thread_t thread, const std::vector<unsigned int> &mask)
{
//DWORD_PTR mask = (1 << n);
DWORD_PTR dword_mask = 0;
std::vector<unsigned int> _mask = mask;
std::vector<unsigned int>::iterator itr;
for(itr = _mask.begin(); itr != _mask.end(); itr++)
dword_mask |= (1 << (*itr));
DWORD_PTR ret = SetThreadAffinityMask(thread, dword_mask);
if(ret == 0) {
std::stringstream s;
s << "thread_bind_to_processor failed with error: " << GetLastError() << std::endl;
throw std::runtime_error(s.str());
}
}
void
thread_unbind()
{
thread_unbind(get_current_thread_id());
}
void
thread_unbind(gr_thread_t thread)
{
DWORD_PTR dword_mask = sizeof(DWORD_PTR) - 1;
DWORD_PTR ret = SetThreadAffinityMask(thread, dword_mask);
if(ret == 0) {
std::stringstream s;
s << "thread_unbind failed with error: " << GetLastError() << std::endl;
throw std::runtime_error(s.str());
}
}
} /* namespace gruel */
#elif defined(macintosh) || defined(__APPLE__) || defined(__APPLE_CC__)
namespace gruel {
gr_thread_t
get_current_thread_id()
{
// Not implemented on OSX
}
void
thread_bind_to_processor(unsigned int n)
{
// Not implemented on OSX
}
void
thread_bind_to_processor(gr_thread_t thread, unsigned int n)
{
// Not implemented on OSX
}
void
thread_bind_to_processor(const std::vector<unsigned int> &mask)
{
// Not implemented on OSX
}
void
thread_bind_to_processor(gr_thread_t thread, const std::vector<unsigned int> &mask)
{
// Not implemented on OSX
}
void
thread_unbind()
{
// Not implemented on OSX
}
void
thread_unbind(gr_thread_t thread)
{
// Not implemented on OSX
}
} /* namespace gruel */
#else
#include <sstream>
#include <stdexcept>
#include <pthread.h>
namespace gruel {
gr_thread_t
get_current_thread_id()
{
return pthread_self();
}
void
thread_bind_to_processor(unsigned int n)
{
std::vector<unsigned int> mask(1, n);
thread_bind_to_processor(get_current_thread_id(), mask);
}
void
thread_bind_to_processor(const std::vector<unsigned int> &mask)
{
thread_bind_to_processor(get_current_thread_id(), mask);
}
void
thread_bind_to_processor(gr_thread_t thread, unsigned int n)
{
std::vector<unsigned int> mask(1, n);
thread_bind_to_processor(thread, mask);
}
void
thread_bind_to_processor(gr_thread_t thread, const std::vector<unsigned int> &mask)
{
cpu_set_t set;
size_t len = sizeof(cpu_set_t);
std::vector<unsigned int> _mask = mask;
std::vector<unsigned int>::iterator itr;
CPU_ZERO(&set);
for(itr = _mask.begin(); itr != _mask.end(); itr++)
CPU_SET(*itr, &set);
int ret = pthread_setaffinity_np(thread, len, &set);
if(ret != 0) {
std::stringstream s;
s << "thread_bind_to_processor failed with error: " << ret << std::endl;
throw std::runtime_error(s.str());
}
}
void
thread_unbind()
{
thread_unbind(get_current_thread_id());
}
void
thread_unbind(gr_thread_t thread)
{
cpu_set_t set;
size_t len = sizeof(cpu_set_t);
CPU_ZERO(&set);
long ncpus = sysconf(_SC_NPROCESSORS_ONLN);
for(long n = 0; n < ncpus; n++) {
CPU_SET(n, &set);
}
int ret = pthread_setaffinity_np(thread, len, &set);
if(ret != 0) {
std::stringstream s;
s << "thread_unbind failed with error: " << ret << std::endl;
throw std::runtime_error(s.str());
}
}
} /* namespace gruel */
#endif
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