tPthreadSignals.cxx
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上传日期:2013-07-25
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- /* ====================================================================
- * The Vovida Software License, Version 1.0
- *
- * Copyright (c) 2000 Vovida Networks, Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The names "VOCAL", "Vovida Open Communication Application Library",
- * and "Vovida Open Communication Application Library (VOCAL)" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact vocal@vovida.org.
- *
- * 4. Products derived from this software may not be called "VOCAL", nor
- * may "VOCAL" appear in their name, without prior written
- * permission of Vovida Networks, Inc.
- *
- * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
- * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL VOVIDA
- * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
- * IN EXCESS OF $1,000, NOR FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
- * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
- * DAMAGE.
- *
- * ====================================================================
- *
- * This software consists of voluntary contributions made by Vovida
- * Networks, Inc. and many individuals on behalf of Vovida Networks,
- * Inc. For more information on Vovida Networks, Inc., please see
- * <http://www.vovida.org/>.
- *
- */
- static const char* const tPthreadSignals_cxx_Version =
- "$Id$";
- #include <cassert>
- #include <cerrno>
- #include <string>
- #include <iostream>
- #include <unistd.h>
- #include <signal.h>
- #include <pthread.h>
- #include <sys/poll.h>
- #include <values.h>
- #include <sys/time.h>
- #include "Application.hxx"
- #include "Thread.hxx"
- #include "VCondition.h"
- #include "VMutex.h"
- using namespace Vocal;
- using namespace Vocal::Threads;
- extern "C"
- {
- void handle_sig(int sig, siginfo_t *, void *)
- {
- static int count = 0;
- cout << "Interrupt: thread = " << Thread::selfId()
- << ", signal = " << sig << endl;
- if ( count++ > 30 )
- {
- exit(1);
- }
- }
- }
- class ThreadSignalTester : public Runnable
- {
- public:
- ThreadSignalTester() {}
- ~ThreadSignalTester() {}
- ReturnCode run();
- };
- class tSignal : public Application
- {
- public:
- tSignal();
- ~tSignal();
- ReturnCode run();
- };
- tSignal::tSignal() {}
- tSignal::~tSignal() {}
- ReturnCode
- ThreadSignalTester::run()
- {
- cout << "pid: " << getpid() << endl;
- ReturnCode rc = SUCCESS;
- sigset_t hup_mask;
- rc = sigaddset(&hup_mask, SIGHUP);
- assert( rc == 0 );
- rc = pthread_sigmask(SIG_BLOCK, &hup_mask, 0);
- assert( rc == 0 );
- VMutex mutex;
- VCondition condition;
-
- while ( 1 )
- {
- rc = pthread_sigmask(SIG_UNBLOCK, &hup_mask, 0);
- assert( rc == 0 );
-
- rc = poll(0, 0, -1);
- assert( rc == -1 && errno == EINTR );
-
- /*
- NOTE: pthread_cond_timedwait does not come back return
- when a signal is raised. despite what the man page
- says.
- int relativeTime = 5000; // MAXINT;
- // Relative time is specified, so create the absolute time
- // of expiration.
- //
- timeval expiresTV;
- int rc = gettimeofday(&expiresTV, 0);
- assert( rc == 0 );
- expiresTV.tv_sec += (relativeTime / 1000);
- expiresTV.tv_usec += ((relativeTime % 1000) * 1000);
- timespec expiresTS;
- expiresTS.tv_sec = expiresTV.tv_sec + ( expiresTV.tv_usec / 1000000 );
- expiresTS.tv_nsec = (expiresTV.tv_usec % 1000000 ) * 1000;
- vcondition_t * myId = condition.getId();
- rc = pthread_cond_timedwait(myId, mutex.getId(), &expiresTS);
- cout << "pthread_cond_timedwait returned: rc = " << rc
- << ", " << strerror(rc) << endl;
-
- assert( rc == ETIMEDOUT || rc == EINTR );
- */
-
- rc = pthread_sigmask(SIG_BLOCK, &hup_mask, 0);
- assert( rc == 0 );
- }
- return ( rc );
- }
- Application * Application::create()
- {
- return ( new tSignal );
- }
- ReturnCode
- tSignal::run()
- {
- cout << "pid: " << getpid() << endl;
-
- ThreadSignalTester signalTester1;
- Thread signalTesterThread1(signalTester1, "signalTester");
- ThreadSignalTester signalTester2;
- Thread signalTesterThread2(signalTester2, "signalTester");
- int rc;
-
- sigset_t hup_mask;
- rc = sigaddset(&hup_mask, SIGHUP);
- assert( rc == 0 );
- rc = pthread_sigmask(SIG_UNBLOCK, &hup_mask, 0);
- assert( rc == 0 );
-
- sigset_t sa_mask;
- rc = sigemptyset(&sa_mask);
- assert( rc == 0 );
-
- struct sigaction sa;
-
- sa.sa_handler = 0;
- sa.sa_sigaction = handle_sig;
- sa.sa_mask = sa_mask;
- sa.sa_flags = SA_SIGINFO;
-
- rc = sigaction(SIGHUP, &sa, 0);
- assert( rc == 0 );
-
- raise(SIGHUP);
-
- while ( 1 )
- {
- poll(0, 0, -1);
- }
- return ( signalTesterThread1.join() || signalTesterThread2.join() );
- }
- int main(int argc, char ** argv, char ** arge)
- {
- return ( Application::main(argc, argv, arge) );
- }
-