178 lines
5.4 KiB
C++
178 lines
5.4 KiB
C++
/*
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Copyright (C) 2004-2008 Grame
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "JackPosixProcessSync.h"
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#include "JackError.h"
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namespace Jack
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{
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void JackPosixProcessSync::Signal()
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{
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int res = pthread_cond_signal(&fCond);
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if (res != 0) {
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jack_error("JackPosixProcessSync::Signal error err = %s", strerror(res));
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}
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}
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// TO DO : check thread consistency?
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void JackPosixProcessSync::LockedSignal()
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{
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int res = pthread_mutex_lock(&fMutex);
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if (res != 0) {
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jack_error("JackPosixProcessSync::LockedSignal error err = %s", strerror(res));
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}
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res = pthread_cond_signal(&fCond);
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if (res != 0) {
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jack_error("JackPosixProcessSync::LockedSignal error err = %s", strerror(res));
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}
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res = pthread_mutex_unlock(&fMutex);
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if (res != 0) {
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jack_error("JackPosixProcessSync::LockedSignal error err = %s", strerror(res));
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}
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}
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void JackPosixProcessSync::SignalAll()
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{
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int res = pthread_cond_broadcast(&fCond);
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if (res != 0) {
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jack_error("JackPosixProcessSync::SignalAll error err = %s", strerror(res));
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}
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}
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// TO DO : check thread consistency?
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void JackPosixProcessSync::LockedSignalAll()
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{
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int res = pthread_mutex_lock(&fMutex);
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if (res != 0) {
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jack_error("JackPosixProcessSync::LockedSignalAll error err = %s", strerror(res));
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}
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res = pthread_cond_broadcast(&fCond);
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if (res != 0) {
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jack_error("JackPosixProcessSync::LockedSignalAll error err = %s", strerror(res));
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}
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res = pthread_mutex_unlock(&fMutex);
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if (res != 0) {
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jack_error("JackPosixProcessSync::LockedSignalAll error err = %s", strerror(res));
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}
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}
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void JackPosixProcessSync::Wait()
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{
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ThrowIf(!pthread_equal(pthread_self(), fOwner), JackException("JackPosixProcessSync::Wait: a thread has to have locked a mutex before it can wait"));
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fOwner = 0;
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int res = pthread_cond_wait(&fCond, &fMutex);
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if (res != 0) {
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jack_error("JackPosixProcessSync::Wait error err = %s", strerror(res));
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} else {
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fOwner = pthread_self();
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}
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}
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// TO DO : check thread consistency?
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void JackPosixProcessSync::LockedWait()
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{
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int res;
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res = pthread_mutex_lock(&fMutex);
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if (res != 0) {
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jack_error("JackPosixProcessSync::LockedWait error err = %s", strerror(res));
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}
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if ((res = pthread_cond_wait(&fCond, &fMutex)) != 0) {
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jack_error("JackPosixProcessSync::LockedWait error err = %s", strerror(res));
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}
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res = pthread_mutex_unlock(&fMutex);
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if (res != 0) {
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jack_error("JackPosixProcessSync::LockedWait error err = %s", strerror(res));
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}
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}
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bool JackPosixProcessSync::TimedWait(long usec)
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{
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ThrowIf(!pthread_equal(pthread_self(), fOwner), JackException("JackPosixProcessSync::TimedWait: a thread has to have locked a mutex before it can wait"));
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fOwner = 0;
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struct timeval T0, T1;
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timespec time;
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struct timeval now;
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int res;
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jack_log("JackPosixProcessSync::TimedWait time out = %ld", usec);
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gettimeofday(&T0, 0);
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gettimeofday(&now, 0);
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unsigned int next_date_usec = now.tv_usec + usec;
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time.tv_sec = now.tv_sec + (next_date_usec / 1000000);
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time.tv_nsec = (next_date_usec % 1000000) * 1000;
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res = pthread_cond_timedwait(&fCond, &fMutex, &time);
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if (res != 0 && res != ETIMEDOUT) {
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jack_error("JackPosixProcessSync::TimedWait error usec = %ld err = %s", usec, strerror(res));
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} else {
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fOwner = pthread_self();
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}
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gettimeofday(&T1, 0);
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jack_log("JackPosixProcessSync::TimedWait finished delta = %5.1lf",
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(1e6 * T1.tv_sec - 1e6 * T0.tv_sec + T1.tv_usec - T0.tv_usec));
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return (res == 0);
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}
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// TO DO : check thread consistency?
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bool JackPosixProcessSync::LockedTimedWait(long usec)
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{
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struct timeval T0, T1;
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timespec time;
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struct timeval now;
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int res1, res2;
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res1 = pthread_mutex_lock(&fMutex);
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if (res1 != 0) {
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jack_error("JackPosixProcessSync::LockedTimedWait error err = %s", usec, strerror(res1));
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}
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jack_log("JackPosixProcessSync::TimedWait time out = %ld", usec);
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gettimeofday(&T0, 0);
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gettimeofday(&now, 0);
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unsigned int next_date_usec = now.tv_usec + usec;
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time.tv_sec = now.tv_sec + (next_date_usec / 1000000);
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time.tv_nsec = (next_date_usec % 1000000) * 1000;
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res2 = pthread_cond_timedwait(&fCond, &fMutex, &time);
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if (res2 != 0) {
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jack_error("JackPosixProcessSync::LockedTimedWait error usec = %ld err = %s", usec, strerror(res2));
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}
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gettimeofday(&T1, 0);
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res1 = pthread_mutex_unlock(&fMutex);
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if (res1 != 0) {
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jack_error("JackPosixProcessSync::LockedTimedWait error err = %s", usec, strerror(res1));
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}
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jack_log("JackPosixProcessSync::TimedWait finished delta = %5.1lf",
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(1e6 * T1.tv_sec - 1e6 * T0.tv_sec + T1.tv_usec - T0.tv_usec));
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return (res2 == 0);
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}
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} // end of namespace
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