Function DetourDetach

lib_fiber/cpp/src/detours/detours.cpp:2352–2489

}

LONG WINAPI DetourDetach(_Inout_ PVOID *ppPointer,
                         _In_ PVOID pDetour)
{
    LONG error = NO_ERROR;

    if (s_nPendingThreadId != (LONG)GetCurrentThreadId()) {
        return ERROR_INVALID_OPERATION;
    }

    // If any of the pending operations failed, then we don't need to do this.
    if (s_nPendingError != NO_ERROR) {
        return s_nPendingError;
    }

    if (pDetour == NULL) {
        return ERROR_INVALID_PARAMETER;
    }
    if (ppPointer == NULL) {
        return ERROR_INVALID_HANDLE;
    }
    if (*ppPointer == NULL) {
        error = ERROR_INVALID_HANDLE;
        s_nPendingError = error;
        s_ppPendingError = ppPointer;
        DETOUR_BREAK();
        return error;
    }

    DetourOperation *o = new NOTHROW DetourOperation;
    if (o == NULL) {
        error = ERROR_NOT_ENOUGH_MEMORY;
      fail:
        s_nPendingError = error;
        DETOUR_BREAK();
      stop:
        if (o != NULL) {
            delete o;
            o = NULL;
        }
        s_ppPendingError = ppPointer;
        return error;
    }


#ifdef DETOURS_IA64
    PPLABEL_DESCRIPTOR ppldTrampo = (PPLABEL_DESCRIPTOR)*ppPointer;
    PPLABEL_DESCRIPTOR ppldDetour = (PPLABEL_DESCRIPTOR)pDetour;
    PVOID pDetourGlobals = NULL;
    PVOID pTrampoGlobals = NULL;

    pDetour = (PBYTE)DetourCodeFromPointer(ppldDetour, &pDetourGlobals);
    PDETOUR_TRAMPOLINE pTrampoline = (PDETOUR_TRAMPOLINE)
        DetourCodeFromPointer(ppldTrampo, &pTrampoGlobals);
    DETOUR_TRACE(("  ppldDetour=%p, code=%p [gp=%p]\n",
                  ppldDetour, pDetour, pDetourGlobals));
    DETOUR_TRACE(("  ppldTrampo=%p, code=%p [gp=%p]\n",
                  ppldTrampo, pTrampoline, pTrampoGlobals));