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/*
Copyright (C) 2005-2009 Michel de Boer <michel@twinklephone.com>
This program 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 2 of the License, or
(at your option) any later version.
This program 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, see <https://www.gnu.org/licenses/>.
*/
#include <signal.h>
#include <cstdio>
#include <cstdlib>
#include <sys/types.h>
#include <unistd.h>
#include "thread.h"
// Scratch variables for checking LinuxThreads vs NPTL
static pid_t pid_thread;
t_thread::t_thread(void *(*start_routine)(void *), void *arg) {
int ret;
ret = pthread_create(&tid, NULL, start_routine, arg);
if (ret != 0) throw ret;
}
void t_thread::join(void) {
int ret = pthread_join(tid, NULL);
if (ret != 0) throw ret;
}
void t_thread::detach(void) {
int ret = pthread_detach(tid);
if (ret != 0) throw ret;
}
void t_thread::kill(void) {
int ret = pthread_kill(tid, SIGKILL);
if (ret != 0) throw ret;
}
void t_thread::cancel(void) {
int ret = pthread_cancel(tid);
if (ret != 0) throw ret;
}
void t_thread::set_sched_fifo(int priority) {
struct sched_param sp;
sp.sched_priority = priority;
int ret = pthread_setschedparam(tid, SCHED_FIFO, &sp);
if (ret != 0) throw ret;
}
pthread_t t_thread::get_tid(void) const {
return tid;
}
pthread_t t_thread::self(void) {
return pthread_self();
}
bool t_thread::is_equal(const t_thread &thr) const {
return pthread_equal(tid, thr.get_tid());
}
bool t_thread::is_equal(const pthread_t &_tid) const {
return pthread_equal(tid, _tid);
}
bool t_thread::is_self(void) const {
return pthread_equal(tid, pthread_self());
}
bool t_thread::is_self(const pthread_t &_tid) {
return pthread_equal(_tid, pthread_self());
}
void *check_threading_impl(void *arg) {
pid_thread = getpid();
pthread_exit(NULL);
}
bool t_thread::is_LinuxThreads(void) {
t_thread *thr = new t_thread(check_threading_impl, NULL);
try {
thr->join();
} catch (int) {
// Thread is already terminated.
}
delete thr;
// In LinuxThreads each thread has a different pid.
// In NPTL all threads have the same pid.
return (getpid() != pid_thread);
}
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