105 lines
2.3 KiB
C++
105 lines
2.3 KiB
C++
/* This file is part of Ingen. Copyright (C) 2006 Dave Robillard.
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*
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* Om is free software; you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* Om is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "Thread.h"
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#include <cassert>
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#include <iostream>
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#include <pthread.h>
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using std::cerr; using std::cout; using std::endl;
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namespace Om {
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Thread::Thread()
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: _pthread_exists(false)
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{
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}
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Thread::~Thread()
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{
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stop();
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}
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/** Start the process thread.
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*/
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void
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Thread::start()
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{
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cout << "[" << _name << " Thread] Starting." << endl;
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pthread_attr_t attr;
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pthread_attr_init(&attr);
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pthread_attr_setstacksize(&attr, 1500000);
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pthread_create(&_pthread, &attr, _static_run, this);
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_pthread_exists = true;
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}
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/** Stop the process thread.
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*/
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void
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Thread::stop()
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{
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if (_pthread_exists) {
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pthread_cancel(_pthread);
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pthread_join(_pthread, NULL);
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_pthread_exists = false;
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}
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}
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/** Set the scheduling policy for this thread.
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*
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* @param must be one of SCHED_FIFO, SCHED_RR, or SCHED_OTHER.
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*/
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void
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Thread::set_scheduling(int policy, unsigned int priority)
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{
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sched_param sp;
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sp.sched_priority = priority;
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int result = pthread_setschedparam(_pthread, SCHED_FIFO, &sp);
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if (!result) {
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cout << "[" << _name << " Thread] Set scheduling policy to ";
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switch (policy) {
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case SCHED_FIFO: cout << "SCHED_FIFO"; break;
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case SCHED_RR: cout << "SCHED_RR"; break;
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case SCHED_OTHER: cout << "SCHED_OTHER"; break;
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default: cout << "UNKNOWN"; break;
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}
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cout << ", priority " << sp.sched_priority << endl;
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} else {
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cout << "[" << _name << " Thread] Unable to set scheduling policy ("
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<< strerror(result) << ")" << endl;
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}
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}
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void*
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Thread::_static_run(void* me)
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{
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Thread* myself = (Thread*)me;
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myself->_run();
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// and I
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return NULL;
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}
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} // namespace Om
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