QT 共享内存

//写内存

QSharedMemory shared("xxxx");    //shared.setKey("du");    if(shared.create(1))    {        qDebug()<<"create succ";    }    else {        qDebug()<<"create fail!!!!!";    }    char *p=nullptr;    p = (char *)shared.data();    *p = 'd';

//读区内存

QSharedMemory shared("xxxx");    if(shared.create(1))    {        qDebug()<<"create succ";    }    else {        qDebug()<<"create fail!!!!!";    }    shared.attach();    char *p = (char *)shared.data();    shared.detach();