/* -------------------------------------------------------------------
* Stop the specified object's thread execution (if any) immediately.
* Decrements thread count and resets the thread ID.
* ------------------------------------------------------------------- */
void thread_stop( struct thread_Settings* thread ) {
#ifdef HAVE_THREAD
// Make sure we have been started
if ( ! thread_equalid( thread->mTID, thread_zeroid() ) ) {
// decrement thread count
Condition_Lock( thread_sNum_cond );
IPERF_DEBUGF( THREAD_DEBUG | IPERF_DBG_TRACE, ( "Decrementing thread count from %d to %d.\r\n", thread_sNum, (thread_sNum - 1) ) );
thread_sNum--;
IPERF_DEBUGF( CONDITION_DEBUG | IPERF_DBG_TRACE, ( "Signaling thread_sNum_cond condition.\r\n" ) );
Condition_Signal( &thread_sNum_cond );
Condition_Unlock( thread_sNum_cond );
// use exit() if called from within this thread
// use cancel() if called from a different thread
if ( thread_equalid( thread_getid(), thread->mTID ) ) {
// Destroy the object
Settings_Destroy( thread );
// Exit
#if defined( HAVE_POSIX_THREAD )
IPERF_DEBUGF( THREAD_DEBUG | IPERF_DBG_TRACE, ( "Exiting %s thread.\r\n", thread_names[thread->mThreadMode] ) );
pthread_exit( NULL );
#elif defined( HAVE_WIN32_THREAD )
IPERF_DEBUGF( THREAD_DEBUG | IPERF_DBG_TRACE, ( "Exiting %s thread.\r\n", thread_names[thread->mThreadMode] ) );
CloseHandle( thread->mHandle );
ExitThread( 0 );
#endif /* HAVE_POSIX_THREAD */
} else {
// Cancel
#if defined( HAVE_POSIX_THREAD )
// Cray J90 doesn't have pthread_cancel; Iperf works okay without
#ifdef HAVE_PTHREAD_CANCEL
IPERF_DEBUGF( THREAD_DEBUG | IPERF_DBG_TRACE, ( "Canceling %s thread.\r\n", thread_names[thread->mThreadMode] ) );
pthread_cancel( thread->mTID );
#endif /* HAVE_PTHREAD_CANCEL */
#elif defined(HAVE_WIN32_THREAD)
// this is a somewhat dangerous function; it's not
// suggested to Stop() threads a lot.
IPERF_DEBUGF( THREAD_DEBUG | IPERF_DBG_TRACE, ( "Terminating %s thread.\r\n", thread_names[thread->mThreadMode] ) );
TerminateThread( thread->mHandle, 0 );
#endif /* HAVE_POSIX_THREAD */
// Destroy the object only after killing the thread
Settings_Destroy( thread );
}
}
#endif /* HAVE_THREAD */
} // end thread_stop
/* -------------------------------------------------------------------
* Stop the specified object's thread execution (if any) immediately.
* Decrements thread count and resets the thread ID.
* ------------------------------------------------------------------- */
void thread_stop( struct thread_Settings* thread ) {
#ifdef HAVE_THREAD
// Make sure we have been started
if ( ! thread_equalid( thread->mTID, thread_zeroid() ) ) {
// decrement thread count
Condition_Lock( thread_sNum_cond );
thread_sNum--;
Condition_Signal( &thread_sNum_cond );
Condition_Unlock( thread_sNum_cond );
// use exit() if called from within this thread
// use cancel() if called from a different thread
if ( thread_equalid( thread_getid(), thread->mTID ) ) {
// Destroy the object
Settings_Destroy( thread );
// Exit
#if defined( HAVE_POSIX_THREAD )
pthread_exit( NULL );
#else // Win32
CloseHandle( thread->mHandle );
ExitThread( 0 );
#endif
} else {
// Cancel
#if defined( HAVE_POSIX_THREAD )
// Cray J90 doesn't have pthread_cancel; Iperf works okay without
#ifdef HAVE_PTHREAD_CANCEL
pthread_cancel( thread->mTID );
#endif
#else // Win32
// this is a somewhat dangerous function; it's not
// suggested to Stop() threads a lot.
TerminateThread( thread->mHandle, 0 );
#endif
// Destroy the object only after killing the thread
Settings_Destroy( thread );
}
}
#endif
} // end Stop
/* -------------------------------------------------------------------
* Signal handler sets the sInterupted flag, so the object can
* respond appropriately.. [static]
* ------------------------------------------------------------------- */
void Sig_Interupt( int inSigno ) {
#ifdef HAVE_THREAD
// We try to not allow a single interrupt handled by multiple threads
// to completely kill the app so we save off the first thread ID
// then that is the only thread that can supply the next interrupt
if ( thread_equalid( sThread, thread_zeroid() ) ) {
sThread = thread_getid();
} else if ( thread_equalid( sThread, thread_getid() ) ) {
sig_exit( inSigno );
}
// global variable used by threads to see if they were interrupted
sInterupted = 1;
// with threads, stop waiting for non-terminating threads
// (ie Listener Thread)
thread_release_nonterm( 1 );
#else
// without threads, just exit quietly, same as sig_exit()
sig_exit( inSigno );
#endif /* HAVE_THREAD */
} // end Sig_Interupt
/* -------------------------------------------------------------------
* Start the specified object's thread execution. Increments thread
* count, spawns new thread, and stores thread ID.
* ------------------------------------------------------------------- */
void thread_start( struct thread_Settings* thread ) {
// Make sure this object has not been started already
if ( thread_equalid( thread->mTID, thread_zeroid() ) ) {
// Check if we need to start another thread before this one
if ( thread->runNow != NULL ) {
thread_start( thread->runNow );
}
// increment thread count
Condition_Lock( thread_sNum_cond );
thread_sNum++;
Condition_Unlock( thread_sNum_cond );
#if defined( HAVE_POSIX_THREAD )
// pthreads -- spawn new thread
if ( pthread_create( &thread->mTID, NULL, thread_run_wrapper, thread ) != 0 ) {
WARN( 1, "pthread_create" );
// decrement thread count
Condition_Lock( thread_sNum_cond );
thread_sNum--;
Condition_Unlock( thread_sNum_cond );
}
#elif defined( HAVE_WIN32_THREAD )
// Win32 threads -- spawn new thread
// Win32 has a thread handle in addition to the thread ID
thread->mHandle = CreateThread( NULL, 0, thread_run_wrapper, thread, 0, &thread->mTID );
if ( thread->mHandle == NULL ) {
WARN( 1, "CreateThread" );
// decrement thread count
Condition_Lock( thread_sNum_cond );
thread_sNum--;
Condition_Unlock( thread_sNum_cond );
}
#else
// single-threaded -- call Run_Wrapper in this thread
thread_run_wrapper( thread );
#endif
}
} // end thread_start
/* -------------------------------------------------------------------
* Start the specified object's thread execution. Increments thread
* count, spawns new thread, and stores thread ID.
* ------------------------------------------------------------------- */
void thread_start( struct thread_Settings* thread ) {
// Make sure this object has not been started already
if ( thread_equalid( thread->mTID, thread_zeroid() ) ) {
// Check if we need to start another thread before this one
if ( thread->runNow != NULL ) {
thread_start( thread->runNow );
}
// increment thread count
Condition_Lock( thread_sNum_cond );
IPERF_DEBUGF( THREAD_DEBUG | IPERF_DBG_TRACE, ( "Incrementing thread count from %d to %d.\r\n", thread_sNum, (thread_sNum + 1) ) );
thread_sNum++;
Condition_Unlock( thread_sNum_cond );
IPERF_DEBUGF( THREAD_DEBUG | IPERF_DBG_TRACE | IPERF_DBG_STATE, ( "Spawning %s thread.\r\n", thread_names[thread->mThreadMode] ) );
#if defined( HAVE_POSIX_THREAD )
// pthreads -- spawn new thread
if ( pthread_create( &thread->mTID, NULL, thread_run_wrapper, thread ) != 0 ) {
WARN( 1, ( "pthread_create failed!\r\n" ) );
// decrement thread count
Condition_Lock( thread_sNum_cond );
IPERF_DEBUGF( THREAD_DEBUG | IPERF_DBG_TRACE, ( "Decrementing thread count from %d to %d.\r\n", thread_sNum, (thread_sNum - 1) ) );
thread_sNum--;
Condition_Unlock( thread_sNum_cond );
}
#elif defined( HAVE_WIN32_THREAD )
// Win32 threads -- spawn new thread
// Win32 has a thread handle in addition to the thread ID
thread->mHandle = CreateThread( NULL, 0, thread_run_wrapper, thread, 0, &thread->mTID );
if ( thread->mHandle == NULL ) {
WARN( 1, ( "CreateThread failed!\r\n" ) );
// decrement thread count
Condition_Lock( thread_sNum_cond );
IPERF_DEBUGF( THREAD_DEBUG | IPERF_DBG_TRACE, ( "Decrementing thread count from %d to %d.\r\n", thread_sNum, (thread_sNum - 1) ) );
thread_sNum--;
Condition_Unlock( thread_sNum_cond );
}
#else
// single-threaded -- call Run_Wrapper in this thread
thread_run_wrapper( thread );
#endif /* HAVE_POSIX_THREAD */
}
} // end thread_start