JackPosixProcessSync.cpp
/*
Copyright (C) 2004-2008 Grame
This program 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 2.1 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "JackPosixProcessSync.h"
#include "JackError.h"
namespace Jack
{
void JackPosixProcessSync::Signal()
{
int res = pthread_cond_signal(&fCond);
if (res != 0) {
jack_error("JackPosixProcessSync::Signal error err = %s", strerror(res));
}
}
// TO DO : check thread consistency?
void JackPosixProcessSync::LockedSignal()
{
int res = pthread_mutex_lock(&fMutex);
if (res != 0) {
jack_error("JackPosixProcessSync::LockedSignal error err = %s", strerror(res));
}
res = pthread_cond_signal(&fCond);
if (res != 0) {
jack_error("JackPosixProcessSync::LockedSignal error err = %s", strerror(res));
}
res = pthread_mutex_unlock(&fMutex);
if (res != 0) {
jack_error("JackPosixProcessSync::LockedSignal error err = %s", strerror(res));
}
}
void JackPosixProcessSync::SignalAll()
{
int res = pthread_cond_broadcast(&fCond);
if (res != 0) {
jack_error("JackPosixProcessSync::SignalAll error err = %s", strerror(res));
}
}
// TO DO : check thread consistency?
void JackPosixProcessSync::LockedSignalAll()
{
int res = pthread_mutex_lock(&fMutex);
if (res != 0) {
jack_error("JackPosixProcessSync::LockedSignalAll error err = %s", strerror(res));
}
res = pthread_cond_broadcast(&fCond);
if (res != 0) {
jack_error("JackPosixProcessSync::LockedSignalAll error err = %s", strerror(res));
}
res = pthread_mutex_unlock(&fMutex);
if (res != 0) {
jack_error("JackPosixProcessSync::LockedSignalAll error err = %s", strerror(res));
}
}
void JackPosixProcessSync::Wait()
{
ThrowIf(!pthread_equal(pthread_self(), fOwner), JackException("JackPosixProcessSync::Wait: a thread has to have locked a mutex before it can wait"));
fOwner = 0;
int res = pthread_cond_wait(&fCond, &fMutex);
if (res != 0) {
jack_error("JackPosixProcessSync::Wait error err = %s", strerror(res));
} else {
fOwner = pthread_self();
}
}
// TO DO : check thread consistency?
void JackPosixProcessSync::LockedWait()
{
int res;
res = pthread_mutex_lock(&fMutex);
if (res != 0) {
jack_error("JackPosixProcessSync::LockedWait error err = %s", strerror(res));
}
if ((res = pthread_cond_wait(&fCond, &fMutex)) != 0) {
jack_error("JackPosixProcessSync::LockedWait error err = %s", strerror(res));
}
res = pthread_mutex_unlock(&fMutex);
if (res != 0) {
jack_error("JackPosixProcessSync::LockedWait error err = %s", strerror(res));
}
}
bool JackPosixProcessSync::TimedWait(long usec)
{
ThrowIf(!pthread_equal(pthread_self(), fOwner), JackException("JackPosixProcessSync::TimedWait: a thread has to have locked a mutex before it can wait"));
fOwner = 0;
struct timeval T0, T1;
timespec time;
struct timeval now;
int res;
jack_log("JackPosixProcessSync::TimedWait time out = %ld", usec);
gettimeofday(&T0, 0);
gettimeofday(&now, 0);
unsigned int next_date_usec = now.tv_usec + usec;
time.tv_sec = now.tv_sec + (next_date_usec / 1000000);
time.tv_nsec = (next_date_usec % 1000000) * 1000;
res = pthread_cond_timedwait(&fCond, &fMutex, &time);
if (res != 0) {
jack_error("JackPosixProcessSync::TimedWait error usec = %ld err = %s", usec, strerror(res));
} else {
fOwner = pthread_self();
}
gettimeofday(&T1, 0);
jack_log("JackPosixProcessSync::TimedWait finished delta = %5.1lf",
(1e6 * T1.tv_sec - 1e6 * T0.tv_sec + T1.tv_usec - T0.tv_usec));
return (res == 0);
}
// TO DO : check thread consistency?
bool JackPosixProcessSync::LockedTimedWait(long usec)
{
struct timeval T0, T1;
timespec time;
struct timeval now;
int res1, res2;
res1 = pthread_mutex_lock(&fMutex);
if (res1 != 0) {
jack_error("JackPosixProcessSync::LockedTimedWait error err = %s", usec, strerror(res1));
}
jack_log("JackPosixProcessSync::TimedWait time out = %ld", usec);
gettimeofday(&T0, 0);
gettimeofday(&now, 0);
unsigned int next_date_usec = now.tv_usec + usec;
time.tv_sec = now.tv_sec + (next_date_usec / 1000000);
time.tv_nsec = (next_date_usec % 1000000) * 1000;
res2 = pthread_cond_timedwait(&fCond, &fMutex, &time);
if (res2 != 0) {
jack_error("JackPosixProcessSync::LockedTimedWait error usec = %ld err = %s", usec, strerror(res2));
}
gettimeofday(&T1, 0);
res1 = pthread_mutex_unlock(&fMutex);
if (res1 != 0) {
jack_error("JackPosixProcessSync::LockedTimedWait error err = %s", usec, strerror(res1));
}
jack_log("JackPosixProcessSync::TimedWait finished delta = %5.1lf",
(1e6 * T1.tv_sec - 1e6 * T0.tv_sec + T1.tv_usec - T0.tv_usec));
return (res2 == 0);
}
} // end of namespace
Jack
Definition: JackAC3Encoder.cpp:30
jack_error
SERVER_EXPORT void jack_error(const char *fmt,...)
Definition: JackError.cpp:92
jack_log
SERVER_EXPORT void jack_log(const char *fmt,...)
Definition: JackError.cpp:108