LADI
/
jack2
1
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

If pthread_setschedparam() in JackPosixThread::AcquireRealTimeImp() fails 

try again with the SCHED_RESET_ON_FORK flag before giving up. This fixes
PulseAudio's JACK modules not being granted real-time scheduling.

Signed-off-by: Juuso Alasuutari <juuso.alasuutari@gmail.com>
This commit is contained in:
Juuso Alasuutari 2019-09-18 22:56:22 +03:00 committed by Filipe Coelho
parent 4341f8086f
commit 0ee218826b
1 changed files with 17 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
posix/JackPosixThread.cpp
View File

@ -28,6 +28,10 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//#define JACK_SCHED_POLICY SCHED_RR
#define JACK_SCHED_POLICY SCHED_FIFO
#if defined(__linux__) && !defined(SCHED_RESET_ON_FORK)
# define SCHED_RESET_ON_FORK 0x40000000
#endif
namespace Jack
{
@ -237,13 +241,19 @@ int JackPosixThread::AcquireRealTimeImp(jack_native_thread_t thread, int priorit
jack_log("JackPosixThread::AcquireRealTimeImp priority = %d", priority);
if ((res = pthread_setschedparam(thread, JACK_SCHED_POLICY, &rtparam)) != 0) {
jack_error("Cannot use real-time scheduling (RR/%d)"
"(%d: %s)", rtparam.sched_priority, res,
strerror(res));
return -1;
}
return 0;
if ((res = pthread_setschedparam(thread, JACK_SCHED_POLICY, &rtparam)) == 0)
return 0;
#ifdef SCHED_RESET_ON_FORK
jack_log("pthread_setschedparam() failed (%d), trying with SCHED_RESET_ON_FORK.", res);
if ((res = pthread_setschedparam(thread, JACK_SCHED_POLICY|SCHED_RESET_ON_FORK, &rtparam)) == 0)
return 0;
#endif
jack_error("Cannot use real-time scheduling (RR/%d)"
" (%d: %s)", rtparam.sched_priority, res,
strerror(res));
return -1;
}
int JackPosixThread::DropRealTime()