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// $Id$
// Exercise more tests for the ACE Tasks. This also shows off some
// Interesting uses of the ACE Log_Msg's ability to print to ostreams.
// BTW, make sure that you set the out_stream in *every* thread that
// you want to have write to the output file, i.e.:
//
//
// if (out_stream)
// {
// ACE_LOG_MSG->set_flags (ACE_Log_Msg::OSTREAM);
// ACE_LOG_MSG->msg_ostream (out_stream);
// }
#include "ace/Reactor.h"
#include "ace/Service_Config.h"
#include "ace/Task.h"
#include "ace/stdcpp.h"
#if defined (ACE_HAS_MINIMUM_IOSTREAMH_INCLUSION)
# include <fstream.h>
# include <iostream.h>
#endif /* ACE_HAS_MINIMUM_IOSTREAMH_INCLUSION */
#if defined (ACE_HAS_THREADS)
static ofstream *out_stream = 0;
static const size_t NUM_INVOCATIONS = 100;
static const size_t TASK_COUNT = 130;
class Test_Task : public ACE_Task<ACE_MT_SYNCH>
{
public:
Test_Task (void);
~Test_Task (void);
virtual int open (void *args = 0);
virtual int close (u_long flags = 0);
virtual int svc (void);
virtual int handle_input (ACE_HANDLE fd);
ACE_Reactor *r_;
size_t handled_;
static size_t current_count_;
static size_t done_cnt_;
};
size_t Test_Task::current_count_ = 0;
size_t Test_Task::done_cnt_ = 0;
static ACE_Thread_Mutex lock_;
Test_Task::Test_Task (void)
{
ACE_GUARD (ACE_Thread_Mutex, ace_mon, lock_);
this->handled_ = 0;
Test_Task::current_count_++;
ACE_DEBUG ((LM_DEBUG,
"Test_Task constructed, current_count_ = %d\n",
Test_Task::current_count_));
}
Test_Task::~Test_Task (void)
{
ACE_GUARD (ACE_Thread_Mutex, ace_mon, lock_);
ACE_DEBUG ((LM_DEBUG, "Test_Task destroyed, current_count_ = %d\n",
Test_Task::current_count_));
}
int
Test_Task::open (void *args)
{
r_ = (ACE_Reactor *) args;
return ACE_Task<ACE_MT_SYNCH>::activate (THR_NEW_LWP);
}
int
Test_Task::close (u_long)
{
ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, lock_, -1);
Test_Task::current_count_--;
ACE_DEBUG ((LM_DEBUG, "Test_Task::close () current_count_ = %d.\n",
Test_Task::current_count_));
return 0;
}
int
Test_Task::svc (void)
{
// Every thread must register the same stream to write to file.
if (out_stream)
{
ACE_LOG_MSG->set_flags (ACE_Log_Msg::OSTREAM);
ACE_LOG_MSG->msg_ostream (out_stream);
}
for (size_t index = 0; index < NUM_INVOCATIONS; index++)
{
ACE_OS::thr_yield ();
if (r_->notify (this, ACE_Event_Handler::READ_MASK))
{
ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, lock_, -1);
ACE_DEBUG ((LM_DEBUG, "Test_Task: error notifying reactor!\n"));
}
}
ACE_DEBUG ((LM_DEBUG, " (%t) returning from svc ()\n"));
return 0;
}
int
Test_Task::handle_input (ACE_HANDLE)
{
this->handled_++;
if (this->handled_ == NUM_INVOCATIONS)
{
ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, lock_, -1);
Test_Task::done_cnt_++;
ACE_DEBUG ((LM_DEBUG,
" (%t) Test_Task: handle_input! done_cnt_ = %d.\n",
Test_Task::done_cnt_));
}
ACE_OS::thr_yield ();
return -1;
}
static void *
dispatch (void *arg)
{
// every thread must register the same stream to write to file
if (out_stream)
{
ACE_LOG_MSG->set_flags (ACE_Log_Msg::OSTREAM);
ACE_LOG_MSG->msg_ostream (out_stream);
}
ACE_DEBUG ((LM_DEBUG, " (%t) Dispatcher Thread started!\n"));
ACE_Reactor *r = (ACE_Reactor *) arg;
int result;
r->owner (ACE_OS::thr_self ());
while (1)
{
result = r->handle_events ();
if (result <= 0)
ACE_DEBUG ((LM_DEBUG, "Dispatch: handle_events (): %d", result));
}
ACE_NOTREACHED(return 0);
}
extern "C" void
handler (int)
{
*out_stream << flush;
out_stream->close ();
ACE_OS::exit (42);
}
int
main (int argc, char **)
{
if (argc > 1)
{
// Send output to file.
ACE_NEW_RETURN (out_stream, ofstream ("test_task_three.out", ios::trunc|ios::out), -1);
ACE_LOG_MSG->set_flags (ACE_Log_Msg::OSTREAM);
ACE_LOG_MSG->msg_ostream (out_stream);
}
// Register a signal handler.
ACE_Sig_Action sa ((ACE_SignalHandler) handler, SIGINT);
ACE_UNUSED_ARG (sa);
ACE_Reactor *reactor1 = ACE_Reactor::instance ();
ACE_Reactor *reactor2 = new ACE_Reactor ();
Test_Task t1[TASK_COUNT];
Test_Task t2[TASK_COUNT];
ACE_Thread::spawn (ACE_THR_FUNC (dispatch), reactor2);
reactor1->owner (ACE_OS::thr_self ());
for (size_t index = 0; index < TASK_COUNT; index++)
{
t1[index].open (reactor1);
t2[index].open (reactor2);
}
ACE_OS::sleep (3);
for (;;)
{
ACE_Time_Value timeout (2);
if (reactor1->handle_events (timeout) <= 0)
{
if (errno == ETIME)
{
ACE_DEBUG ((LM_DEBUG, "no activity within 2 seconds, shutting down\n"));
break;
}
else
ACE_ERROR ((LM_ERROR, "%p error handling events\n", "main"));
}
}
return 0;
}
#else
int
main (int, char *[])
{
ACE_ERROR ((LM_ERROR, "threads not supported on this platform\n"));
return 0;
}
#endif /* ACE_HAS_THREADS */
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