Function AttachCallback

pydevd_attach_to_process/windows/attach.cpp:116–131

int AttachCallback(void *voidInitializeThreadingInfo) {
    // initialize us for threading, this will acquire the GIL if not already created, and is a nop if the GIL is created.
    // This leaves us in the proper state when we return back to the runtime whether the GIL was created or not before
    // we were called.
    InitializeThreadingInfo* initializeThreadingInfo = reinterpret_cast<InitializeThreadingInfo*>(voidInitializeThreadingInfo);
    initializeThreadingInfo->initThreads(); // Note: calling multiple times is ok.
    initializeThreadingInfo->pyImportMod("threading");

    EnterCriticalSection(&initializeThreadingInfo->cs);
    initializeThreadingInfo->completed = true;
    if(initializeThreadingInfo->initedEvent != nullptr) {
        SetEvent(initializeThreadingInfo->initedEvent);
    }
    LeaveCriticalSection(&initializeThreadingInfo->cs);
    return 0;
}


// create a custom heap for our unordered map.  This is necessary because if we suspend a thread while in a heap function