C++ sendSignal函数代码示例

void
Dbtup::buildIndexReply(Signal* signal, const BuildIndexRec* buildPtrP)
{
  const BuildIndxImplReq* buildReq = &buildPtrP->m_request;

  AlterIndxImplReq* req = (AlterIndxImplReq*)signal->getDataPtrSend();
  req->indexId = buildReq->indexId;
  req->senderRef = 0; //
  if (buildPtrP->m_errorCode == BuildIndxImplRef::NoError)
  {
    jam();
    req->requestType = AlterIndxImplReq::AlterIndexOnline;
  }
  else
  {
    jam();
    req->requestType = AlterIndxImplReq::AlterIndexOffline;
  }
  EXECUTE_DIRECT(DBTUX, GSN_ALTER_INDX_IMPL_REQ, signal, 
                 AlterIndxImplReq::SignalLength);

  if (buildPtrP->m_errorCode == BuildIndxImplRef::NoError) {
    jam();
    BuildIndxImplConf* conf =
      (BuildIndxImplConf*)signal->getDataPtrSend();
    conf->senderRef = reference();
    conf->senderData = buildReq->senderData;

    sendSignal(buildReq->senderRef, GSN_BUILD_INDX_IMPL_CONF,
               signal, BuildIndxImplConf::SignalLength, JBB);
  } else {
    jam();
    BuildIndxImplRef* ref =
      (BuildIndxImplRef*)signal->getDataPtrSend();
    ref->senderRef = reference();
    ref->senderData = buildReq->senderData;
    ref->errorCode = buildPtrP->m_errorCode;

    sendSignal(buildReq->senderRef, GSN_BUILD_INDX_IMPL_REF,
               signal, BuildIndxImplRef::SignalLength, JBB);
  }
}

void
Dbtup::execDROP_TRIG_REQ(Signal* signal)
{
  jamEntry();
  BlockReference senderRef = signal->getSendersBlockRef();
  const DropTrigReq reqCopy = *(const DropTrigReq*)signal->getDataPtr();
  const DropTrigReq* const req = &reqCopy;

  // Find table
  TablerecPtr tabPtr;
  tabPtr.i = req->getTableId();
  ptrCheckGuard(tabPtr, cnoOfTablerec, tablerec);

  // Drop trigger
  Uint32 r = dropTrigger(tabPtr.p, req, refToBlock(senderRef));
  if (r == 0){
    // Send conf
    DropTrigConf* const conf = (DropTrigConf*)signal->getDataPtrSend();
    conf->setUserRef(senderRef);
    conf->setConnectionPtr(req->getConnectionPtr());
    conf->setRequestType(req->getRequestType());
    conf->setTableId(req->getTableId());
    conf->setIndexId(req->getIndexId());
    conf->setTriggerId(req->getTriggerId());
    sendSignal(senderRef, GSN_DROP_TRIG_CONF, 
	       signal, DropTrigConf::SignalLength, JBB);
  } else {
    // Send ref
    DropTrigRef* const ref = (DropTrigRef*)signal->getDataPtrSend();
    ref->setUserRef(senderRef);
    ref->setConnectionPtr(req->getConnectionPtr());
    ref->setRequestType(req->getRequestType());
    ref->setTableId(req->getTableId());
    ref->setIndexId(req->getIndexId());
    ref->setTriggerId(req->getTriggerId());
    ref->setErrorCode((DropTrigRef::ErrorCode)r);
    ref->setErrorLine(__LINE__);
    ref->setErrorNode(refToNode(reference()));
    sendSignal(senderRef, GSN_DROP_TRIG_REF, 
	       signal, DropTrigRef::SignalLength, JBB);
  }
}//Dbtup::DROP_TRIG_REQ()

void SensorFileSysWalker::sendNewDirectoryInfo() {
	logger.logInfo( "sendNewDirectoryInfo: execute..." );

	// send current directory list
	StringList files;
	getDirList( curDir , files );
	for( int k = 0; k < files.count(); k++ ) {
		String file = files.get( k );
		sendSignal( SIGNAL_DIR_LISTITEM , file );
	}
}

/*
 * sigtstp_handler - The kernel sends a SIGTSTP to the shell whenever
 *     the user types ctrl-z at the keyboard. Catch it and suspend the
 *     foreground job by sending it a SIGTSTP.  
 */
void sigtstp_handler(int sig) 
{
	pid_t pid;
	pid = fgpid(job_list);
	if(pid != 0){
		sendSignal(sig, -pid);
	}else{
		printf("SIGINT misses\n");
	}
    return;
}

/* 
 * sigint_handler - The kernel sends a SIGINT to the shell whenver the
 *    user types ctrl-c at the keyboard.  Catch it and send it along
 *    to the foreground job.  
 */
void sigint_handler(int sig) 
{
	pid_t pid;
	pid = fgpid(job_list);
	if(pid != 0){
		sendSignal(sig, -pid);		
	}else{
		printf("heihei");
	}
    return;
}

bool TESession::closeSession()
{
  autoClose = true;
  wantedClose = true;
  if (!sh->isRunning() || !sendSignal(SIGHUP))
  {
     // Forced close.
     TQTimer::singleShot(1, this, TQT_SLOT(done()));
  }
  return true;
}

void
Restore::open_file(Signal* signal, FilePtr file_ptr)
{
  signal->theData[0] = NDB_LE_StartReadLCP;
  signal->theData[1] = file_ptr.p->m_table_id;
  signal->theData[2] = file_ptr.p->m_fragment_id;
  sendSignal(CMVMI_REF, GSN_EVENT_REP, signal, 3, JBB);

  FsOpenReq * req = (FsOpenReq *)signal->getDataPtrSend();
  req->userReference = reference();
  req->fileFlags = FsOpenReq::OM_READONLY | FsOpenReq::OM_GZ;
  req->userPointer = file_ptr.i;
  
  FsOpenReq::setVersion(req->fileNumber, 5);
  FsOpenReq::setSuffix(req->fileNumber, FsOpenReq::S_DATA);
  FsOpenReq::v5_setLcpNo(req->fileNumber, file_ptr.p->m_lcp_no);
  FsOpenReq::v5_setTableId(req->fileNumber, file_ptr.p->m_table_id);
  FsOpenReq::v5_setFragmentId(req->fileNumber, file_ptr.p->m_fragment_id);
  sendSignal(NDBFS_REF, GSN_FSOPENREQ, signal, FsOpenReq::SignalLength, JBA);
}

void eFilePushThread::stop()
{
	/* if we aren't running, don't bother stopping. */
	if (m_stop == 1)
		return;
	m_stop = 1;
	eDebug("eFilePushThread stopping thread");
	m_run_cond.signal(); /* Break out of pause if needed */
	sendSignal(SIGUSR1);
	kill(); /* Kill means join actually */
}

void Dbinfo::execINCL_NODEREQ(Signal* signal)
{
  jamEntry();

  const Uint32 senderRef = signal->theData[0];
  const Uint32 inclNode  = signal->theData[1];

  signal->theData[0] = inclNode;
  signal->theData[1] = reference();
  sendSignal(senderRef, GSN_INCL_NODECONF, signal, 2, JBB);
}

	void Program::signal(int sig)
	{
		#ifndef YUNI_OS_MSVC
		auto envptr = pEnv;
		if (!!envptr)
			envptr->sendSignal(true, sig);
		#else
		// Signals are not supported on Windows. Silently ignoring it.
		(void) sig;
		#endif
	}

/*!
 * Main function.
 *
 * Creates a RedshiftEnabler object and connects it to the readyCheck dbus signal, so that if a new redshift plasmoid
 * is created (this sends the readyCheck signal) this is enabled by this program. Moreover this program sends the
 * readyForStart signal once launched to enable already existent redshift plasmoids during the login phase.
 */
int main(int argc, char *argv[])
{
    QCoreApplication app(argc, argv);
    RedshiftEnabler *enabler = new RedshiftEnabler();
    //Responds to the readyCheck signal with a readyForStart signal
    QDBusConnection dbus = QDBusConnection::sessionBus();
    dbus.connect("", "/", "org.kde.redshift", "readyCheck",
                 enabler, SLOT(sendSignal()));
    //Sends the signal once started to enable already possibly running instances of redshift data engine
    enabler->sendSignal();
    return app.exec();
}

void
PgmanProxy::send_data_file_ord(Signal* signal, Uint32 i, Uint32 ret,
                               Uint32 cmd, Uint32 file_no, Uint32 fd)
{
  DataFileOrd* ord = (DataFileOrd*)signal->getDataPtrSend();
  ord->ret = ret;
  ord->cmd = cmd;
  ord->file_no = file_no;
  ord->fd = fd;
  sendSignal(workerRef(i), GSN_DATA_FILE_ORD,
             signal, DataFileOrd::SignalLength, JBB);
}

void
DbgdmProxy::sendTC_SCHVERREQ(Signal* signal, Uint32 ssId, SectionHandle*)
{
  Ss_TC_SCHVERREQ& ss = ssFind<Ss_TC_SCHVERREQ>(ssId);

  TcSchVerReq* req = (TcSchVerReq*)signal->getDataPtrSend();
  *req = ss.m_req;
  req->senderRef = reference();
  req->senderData = ssId;
  sendSignal(workerRef(ss.m_worker), GSN_TC_SCHVERREQ,
             signal, TcSchVerReq::SignalLength, JBB);
}

void eFilePushThread::stop()
{
		/* if we aren't running, don't bother stopping. */
	if (!sync())
		return;

	m_stop = 1;

	eDebug("eFilePushThread stopping thread");
	sendSignal(SIGUSR1);
	kill(0);
}

void eFilePushThread::stop()
{
		/* if we aren't running, don't bother stopping. */
	if (!sync())
		return;

	m_stop = 1;

	eDebug("stopping thread."); /* just do it ONCE. it won't help to do this more than once. */
	sendSignal(SIGUSR1);
	kill(0);
}