示例#1
0
static BOOLEAN PhpWaitUntilThreadIsWaiting(
    _In_ HANDLE ThreadHandle
    )
{
    ULONG attempts;
    BOOLEAN isWaiting = FALSE;
    THREAD_BASIC_INFORMATION basicInfo;

    if (!NT_SUCCESS(PhGetThreadBasicInformation(ThreadHandle, &basicInfo)))
        return FALSE;

    for (attempts = 0; attempts < 20; attempts++)
    {
        PVOID processes;
        PSYSTEM_PROCESS_INFORMATION processInfo;
        ULONG i;

        PhDelayExecution(100);

        if (!NT_SUCCESS(PhEnumProcesses(&processes)))
            break;

        processInfo = PhFindProcessInformation(processes, basicInfo.ClientId.UniqueProcess);

        if (processInfo)
        {
            for (i = 0; i < processInfo->NumberOfThreads; i++)
            {
                if (
                    processInfo->Threads[i].ClientId.UniqueThread == basicInfo.ClientId.UniqueThread &&
                    processInfo->Threads[i].ThreadState == Waiting &&
                    (processInfo->Threads[i].WaitReason == UserRequest ||
                    processInfo->Threads[i].WaitReason == Executive)
                    )
                {
                    isWaiting = TRUE;
                    break;
                }
            }
        }

        PhFree(processes);

        if (isWaiting)
            break;

        PhDelayExecution(500);
    }

    return isWaiting;
}
示例#2
0
static NTSTATUS DnsCacheUpdateThread(
    _In_ PVOID Parameter
    )
{
    PhAcquireFastLockExclusive(&CacheListLock);
    DnsCacheList = TraverseDnsCacheTable(DnsCacheList);
    PhReleaseFastLockExclusive(&CacheListLock);

    PhDelayExecution(2 * 1000); // don't update quicker than 2 seconds

    return STATUS_SUCCESS;
}