As far as I remember, you cannot pass class-methods into pthreads. Consider: this and that. You should use static methods.
Exit Code -11 'Segmentation Fault' executing pthread_create
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06-03-2022 - |
题
I'm trying to create a new thread by executing pthread_create with a single argument.
void P2FPanel::startRecording()
{
qDebug() << "Start recording...";
qDebug() << "_bag_list: " << _bag_list->size();
pthread_create(&_playBags_t, NULL, playBags, _bag_list);
qDebug() << ".... Started";
}
This method is triggered by a button and creates the pthread. Here the code already exits with error -11 (I think it's segmentation fault). The debug lines show that _bag_list is not empty.
void* P2FPanel::*playBags(void* arg0)
{
qDebug() << "Play Bags from _bag_list...";
QList<BagRef*> *bag_list = (QList<BagRef*>*) arg0;
qDebug() << "Play " << QString("%1").arg(bag_list->size()) << " Bags";
//Do stuff
qDebug() << "Finished playing";
return 0;
}
This method should run in a new thread.
class P2FPanel: public rviz::Panel
{
private Q_SLOTS:
void startRecording();
private:
QList<BagRef*> *_bag_list;
void* (*playBags)(void* arg0);
pthread_t _playBags_t;
};
The header file.
Where is the error coming from? Is the declaration of the threaded method correct?
Thanks in advance, best regards, Josch
解决方案
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