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