Приветствую! Столкнулся с периодическими вылетами проги, выполняющей прием данных с RS-232, их обработку, и выдачу пользовательских данных через RS-232 в два канала («передатчика»). Вылет может произойти и через 5 минут, и через пару часов.
Версия ОС:
Linux B7v5 3.2.0-27-generic #43astra9 SMP Fri Nov 2 01:34:28 MSK 2012 x86_64 GNU/Linux
Вкратце прога:
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
R913V Apd_r913v;
//threads
PRD Prd1(1,&Apd_r913v);
PRD Prd2(2,&Apd_r913v);
ReadFromRS232 ReadFromCom(&Apd_r913v);
ReadFromCom.start();
Prd1.start();
Prd2.start();
return a.exec();
}
class R913V : public QObject
{
Q_OBJECT
public:
R913V();
~R913V();
ClientSocket *MS_WR_REG;
QMutex fkMutex, prdMutex, regMutex;
QByteArray arrayBPU;
qint16 out_COM_port(quint8*,qint32);
void control_BPU(quint8);
void write_BPU(bool);
signals:
void toPRD1();
void toPRD2();
};
class PRD : public QThread
{
Q_OBJECT
public:
PRD(quint8 channelNum,R913V *r913v);
~PRD();
void run();
private:
ServerSocket *MS_prd;
ClientSocket *MS_ready_PRD;
quint8 chanNum;
R913V *r913v_apd;
MesT_DRV DRV;
OUT_KDGR OutKdgr;
MesT_OUT_KDGR p_KDGR[8];
T_Mess913v Message;
OUT_KDGR RegOutKdgr[8];
int result;
quint8 out_KDG[sizeof(MesT_OUT_KDGR)*8];
T_OUT_KDGR_MESSAGE out_kdgr_message;
QByteArray bytesForTrm;
void readyPRD();
public slots:
void sendDrv();
};
PRD::PRD(quint8 channelNum,R913V *r913v):chanNum(channelNum),r913v_apd(r913v)
{
switch (chanNum)
{
case 1:
MS_prd = new ServerSocket("MS_RS_OUT22");
MS_ready_PRD = new ClientSocket("MS_RS_DRV22",".");
connect(r913v_apd, SIGNAL(toPRD1()), this, SLOT(sendDrv()));
break;
case 2:
MS_prd = new ServerSocket("MS_RS_OUT23");
MS_ready_PRD = new ClientSocket("MS_RS_DRV23",".");
connect(r913v_apd, SIGNAL(toPRD2()), this, SLOT(sendDrv()));
break;
}
}
void PRD::run()
{
while(1) readyPRD();
}
//chanNum=1 для ПРД1, chanNum=2 для ПРД2
void PRD::readyPRD()
{
memset(&out_KDG[0],0,sizeof(out_KDG));
memset(&p_KDGR[0],0,sizeof(p_KDGR));
memset(&Message,0,sizeof(T_Mess913v));
bytesForTrm.clear();
result = MS_prd->recData(&bytesForTrm);
Q_ASSERT(bytesForTrm.size()>0 && bytesForTrm.size()<=(sizeof(MesT_OUT_KDGR)*8));
if(bytesForTrm.size()>0 && bytesForTrm.size()<=(sizeof(MesT_OUT_KDGR)*8))
{
for(qint32 i=0;i<bytesForTrm.size();i++) out_KDG[i] = bytesForTrm.at(i);
//тут фрагмент с обработкой полученных данных
//......
//тут фрагмент с обработкой полученных данных
quint16 rs = r913v_apd->out_COM_port(&Message.un_mes.outbuf[0],Num_bytes);
Q_ASSERT(rs==0);
for (quint32 i=0;i<NumKdg-1;i++)
{
memset(&out_kdgr_message,0,sizeof(T_OUT_KDGR_MESSAGE));
out_kdgr_message.TypeMessage = MES_KDGR_OUT;
out_kdgr_message.inform.DriverAndTransmitter =
RegOutKdgr[i].Transmitter;
out_kdgr_message.inform.kdgr.WorkPart = RegOutKdgr[i].Kdgr.WorkPart;
out_kdgr_message.inform.kdgr.InfPart[0] = RegOutKdgr[i].Kdgr.InfPart[0];
out_kdgr_message.inform.kdgr.InfPart[1] = RegOutKdgr[i].Kdgr.InfPart[1];
out_kdgr_message.inform.kdgr.InfPart[2] = RegOutKdgr[i].Kdgr.InfPart[2];
//здесь запись в UDP-сокет (writeData), о котором речь в core-файлах
r913v_apd->regMutex.lock();
r913v_apd->MS_WR_REG->writeData((char*)&out_kdgr_message,sizeof(T_OUT_KDGR_MESSAGE));
r913v_apd->regMutex.unlock();
}
} //if(bytesForTrm.size()>0 && bytesForTrm.size()<=(sizeof(MesT_OUT_KDGR)*8))
}
Получаю вот такие стеки в core-файлах:
Program terminated with signal 11, Segmentation fault.
#0 0x00007f6125347106 in QUdpSocket::writeDatagram(char const*, long long, QHostAddress const&, unsigned short) ()
from /usr/lib/qt4.8.6/lib/libQtNetwork.so.4
(gdb) bt
#0 0x00007f6125347106 in QUdpSocket::writeDatagram(char const*, long long, QHostAddress const&, unsigned short) ()
from /usr/lib/qt4.8.6/lib/libQtNetwork.so.4
#1 0x00007f6126244117 in ClientSocket::writeData (this=0x205ba00, data=0x7f611c5b3df0 "\264\004", size=16)
at /home/user/work/common/trunk/SRC_COMMON/projects/base/rs_udpsocket/rs_udpsocket.cpp:210
#2 0x0000000000406983 in PRD::readyPRD (this=0x7fff0ab9d3a0)
at /home/user/work/common/trunk/SRC_BM/projects/conf/rs_r913v/r913v.cpp:1825
#3 0x0000000000405cfa in PRD::run (this=0x7fff0ab9d3a0)
at /home/user/work/common/trunk/SRC_BM/projects/conf/rs_r913v/r913v.cpp:1581
#4 0x00007f6124e1673c in ?? () from /usr/lib/qt4.8.6/lib/libQtCore.so.4
#5 0x00007f6124b6ddb4 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#6 0x00007f61241124fd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#7 0x0000000000000000 in ?? ()
(gdb)
Program terminated with signal 11, Segmentation fault.
#0 0x00007f6e738b25c7 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) bt
#0 0x00007f6e738b25c7 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007f6e738b4878 in malloc () from /lib/x86_64-linux-gnu/libc.so.6
#2 0x00007f6e74659285 in QString::QString(int, Qt::Initialization) () from /usr/lib/qt4.8.6/lib/libQtCore.so.4
#3 0x00007f6e7474aad1 in ?? () from /usr/lib/qt4.8.6/lib/libQtCore.so.4
#4 0x00007f6e7474ae91 in ?? () from /usr/lib/qt4.8.6/lib/libQtCore.so.4
#5 0x00007f6e7465ef8d in QString::fromAscii_helper(char const*, int) () from /usr/lib/qt4.8.6/lib/libQtCore.so.4
#6 0x00007f6e7465f00e in QString::fromAscii(char const*, int) () from /usr/lib/qt4.8.6/lib/libQtCore.so.4
#7 0x00007f6e75a44ed3 in QDebug::operator<< (this=0x7f6e6bdb1cb0, t=0x7f6e75a4bdeb "Send to ")
at /usr/lib/qt4.8.6/include/QtCore/qdebug.h:111
#8 0x00007f6e75a41ef4 in ClientSocket::writeData (this=0x2347a20, data=0x7fff8830c9ec "\264\004", size=16)
at /home/user/work/common/trunk/SRC_COMMON/projects/base/rs_udpsocket/rs_udpsocket.cpp:208
#9 0x0000000000406940 in PRD::readyPRD (this=0x7fff8830c810)
at /home/user/work/common/trunk/SRC_BM/projects/conf/rs_r913v/r913v.cpp:1825
#10 0x0000000000405c4a in PRD::run (this=0x7fff8830c810)
at /home/user/work/common/trunk/SRC_BM/projects/conf/rs_r913v/r913v.cpp:1581
#11 0x00007f6e7461473c in ?? () from /usr/lib/qt4.8.6/lib/libQtCore.so.4
#12 0x00007f6e7436bdb4 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#13 0x00007f6e739104fd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#14 0x0000000000000000 in ?? ()
(gdb)
Верхушка стека разнится, хотя ситуация возникает в потоке PRD, в функции writeData (написана на базе QUdpSocket, используется всеми разработчиками, у всех всё ОК). Прогонял свою прогу через valgrind, исправил выданные замечания – не помогло. Выставил в отладочной версии Q_ASSERTы, ни один при вылетах не срабатывает. Выставил mutex`ы на ресурсы, используемые в разных потоках. Просто наблюдал использование памяти в менеджере процессов – данные неизменны на протяжении всего выполнения программы. Исключил writeData из потока PRD – получил такой стек в core:
Program terminated with signal 11, Segmentation fault.
#0 0x00007f839a9a305d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
from /usr/lib/qt4.8.6/lib/libQtCore.so.4
(gdb) bt
#0 0x00007f839a9a305d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
from /usr/lib/qt4.8.6/lib/libQtCore.so.4
#1 0x00007f839a9cda13 in ?? () from /usr/lib/qt4.8.6/lib/libQtCore.so.4
#2 0x00007f83980a1205 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007f83980a1538 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007f83980a15f4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007f839a9cdbc6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/qt4.8.6/lib/libQtCore.so.4
#6 0x00007f839a99e23f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/qt4.8.6/lib/libQtCore.so.4
#7 0x00007f839a99e4c8 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/qt4.8.6/lib/libQtCore.so.4
#8 0x00007f839a9a33a8 in QCoreApplication::exec() () from /usr/lib/qt4.8.6/lib/libQtCore.so.4
#9 0x0000000000406a9a in main (argc=2, argv=0x7fff93dfb418)
at /home/user/work/common/trunk/SRC_BM/projects/conf/rs_r913v/r913v.cpp:1872
(gdb)
Думается, что в какой-то момент происходит выход за пределы массива, но не догоняю, где..(((
