jack2/posix/JackPosixTime.c

79 lines
1.9 KiB
C

/*
Copyright (C) 2001-2003 Paul Davis
Copyright (C) 2005 Jussi Laako
Copyright (C) 2004-2008 Grame
Copyright (C) 2018 Greg V
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 "JackConstants.h"
#include "JackTime.h"
#include "JackTypes.h"
#include "JackError.h"
#include <time.h>
#include <unistd.h>
jack_time_t (*_jack_get_microseconds)(void) = 0;
static jack_time_t jack_get_microseconds_from_system (void)
{
jack_time_t jackTime;
struct timespec time;
clock_gettime(CLOCK_MONOTONIC, &time);
jackTime = (jack_time_t) time.tv_sec * 1e6 +
(jack_time_t) time.tv_nsec / 1e3;
return jackTime;
}
SERVER_EXPORT void JackSleep(long usec)
{
usleep(usec);
}
SERVER_EXPORT void InitTime()
{
/* nothing to do on a generic system - we use the system clock */
}
SERVER_EXPORT void EndTime()
{}
void SetClockSource(jack_timer_type_t source)
{
jack_log("Clock source : %s", ClockSourceName(source));
_jack_get_microseconds = jack_get_microseconds_from_system;
}
const char* ClockSourceName(jack_timer_type_t source)
{
return "system clock via clock_gettime";
}
SERVER_EXPORT jack_time_t GetMicroSeconds()
{
return _jack_get_microseconds();
}
SERVER_EXPORT jack_time_t jack_get_microseconds()
{
return _jack_get_microseconds();
}