/*
* Copyright (C) 2005-2008 by Pieter Palmers
*
* This file is part of FFADO
* FFADO = Free Firewire (pro-)audio drivers for linux
*
* FFADO is based upon FreeBoB.
*
* 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) version 3 of the License.
*
* 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 .
*
*/
#ifdef HAVE_CONFIG_H
#include
#endif
#include
#include
#include
#include
#include
#include
#include "src/debugmodule/debugmodule.h"
#include "libutil/PosixThread.h"
#include "libutil/Watchdog.h"
#include "libutil/SystemTimeSource.h"
#include
using namespace Util;
DECLARE_GLOBAL_DEBUG_MODULE;
class HangTask : public Util::RunnableInterface
{
public:
HangTask(unsigned int time_usecs, unsigned int nb_hangs)
: m_time( time_usecs )
, m_nb_hangs(nb_hangs) {};
virtual ~HangTask() {};
bool Init() {return true;};
bool Execute() {
debugOutput(DEBUG_LEVEL_VERBOSE, "execute\n");
ffado_microsecs_t start = Util::SystemTimeSource::getCurrentTimeAsUsecs();
ffado_microsecs_t stop_at = start + m_time;
int cnt;
int dummyvar = 0;
while(Util::SystemTimeSource::getCurrentTimeAsUsecs() < stop_at) {
cnt=1000;
while(cnt--) { dummyvar++; }
}
// ensure that dummyvar doesn't get optimized away
bool always_true = (dummyvar + Util::SystemTimeSource::getCurrentTimeAsUsecs() != 0);
bool stop = (m_nb_hangs == 0);
m_nb_hangs--;
// we sleep for 100ms after a 'hang'
Util::SystemTimeSource::SleepUsecRelative(1000*100);
// we want the thread to exit after m_nb_hangs 'hangs'
return always_true && !stop;
};
unsigned int m_time;
unsigned int m_nb_hangs;
};
int run;
// Program documentation.
static char doc[] = "FFADO -- Watchdog test\n\n";
// A description of the arguments we accept.
static char args_doc[] = "";
struct arguments
{
short verbose;
};
// The options we understand.
static struct argp_option options[] = {
{"verbose", 'v', "n", 0, "Verbose level" },
{ 0 }
};
//-------------------------------------------------------------
// Parse a single option.
static error_t
parse_opt( int key, char* arg, struct argp_state* state )
{
// Get the input argument from `argp_parse', which we
// know is a pointer to our arguments structure.
struct arguments* arguments = ( struct arguments* ) state->input;
char* tail;
errno = 0;
switch (key) {
case 'v':
if (arg) {
arguments->verbose = strtoll( arg, &tail, 0 );
if ( errno ) {
fprintf( stderr, "Could not parse 'verbose' argument\n" );
return ARGP_ERR_UNKNOWN;
}
} else {
if ( errno ) {
fprintf( stderr, "Could not parse 'verbose' argument\n" );
return ARGP_ERR_UNKNOWN;
}
}
break;
default:
return ARGP_ERR_UNKNOWN;
}
return 0;
}
// Our argp parser.
static struct argp argp = { options, parse_opt, args_doc, doc };
static void sighandler (int sig)
{
run = 0;
}
int main(int argc, char *argv[])
{
Watchdog *w=NULL;
struct arguments arguments;
// Default values.
arguments.verbose = DEBUG_LEVEL_VERY_VERBOSE;
// Parse our arguments; every option seen by `parse_opt' will
// be reflected in `arguments'.
if ( argp_parse ( &argp, argc, argv, 0, 0, &arguments ) ) {
fprintf( stderr, "Could not parse command line\n" );
exit(1);
}
setDebugLevel(arguments.verbose);
run=1;
signal (SIGINT, sighandler);
signal (SIGPIPE, sighandler);
w=new Watchdog(1000*1000*1, true, 99); // check time is one second
w->setVerboseLevel(arguments.verbose);
HangTask *task1=new HangTask(1000*10, 10); // ten millisecond, 10 hangs
PosixThread *thread1 = new Util::PosixThread(task1, true, 10, PTHREAD_CANCEL_DEFERRED);
thread1->setVerboseLevel(arguments.verbose);
HangTask *task2=new HangTask(1000*1000*2, 10); // two seconds, 10 hangs
PosixThread *thread2 = new Util::PosixThread(task2, true, 10, PTHREAD_CANCEL_DEFERRED);
thread2->setVerboseLevel(arguments.verbose);
w->registerThread(thread1);
w->registerThread(thread2);
// start the watchdog
w->start();
Util::SystemTimeSource::SleepUsecRelative(1000*1000*1);
// start the first thread, should be harmless since it's hang time is too low
thread1->Start();
Util::SystemTimeSource::SleepUsecRelative(1000*1000*1);
// start the second thread, should be rescheduled since it hangs too long
thread2->Start();
// wait for a while
Util::SystemTimeSource::SleepUsecRelative(1000*1000*5);
thread1->Stop();
thread2->Stop();
w->unregisterThread(thread1);
w->unregisterThread(thread2);
delete thread1;
delete thread2;
delete task1;
delete task2;
delete w;
return EXIT_SUCCESS;
}