What is the maximal default stack size when using QThread in QT5 and C++? I have a QVector in my thread and I am calling myvector.append() method, and I`m interested how big my vector can be. I found uint QThread::stackSize() const method which returns Stack size, but only if it was previously changed by method setStackSize(), but what is the default Stack Size?
The stack size only plays are role if you are compiling a 32 bit application and you're allocating the storage for your buffer explicitly on the stack. Just using an automatic QVector or std::vector instance doesn't allocate any large buffers on the stack - you'd need to use a custom allocator for that.
IIRC in 64 bit applications, the memory is laid out such that you won't ever run out of stack space for any reasonable number of threads.