Merge "libbinder: log when threads requested, not started" into main

{

    LOG_THREADPOOL("**** THREAD %p (PID %d) IS JOINING THE THREAD POOL\n", (void*)pthread_self(),

                   getpid());

    mProcess->checkExpectingThreadPoolStart();

    mProcess->mCurrentThreads++;

    mOut.writeInt32(isMain ? BC_ENTER_LOOPER : BC_REGISTER_LOOPER);

    return mThreadPoolStarted;

}

void ProcessState::checkExpectingThreadPoolStart() const {

    if (mThreadPoolStarted) return;

    // this is also racey, but you should setup the threadpool in the main thread. If that is an

    // issue, we can check if we are the process leader, but haven't seen the issue in practice.

    size_t requestedThreads = mMaxThreads.load();

    // if it's manually set to the default, we do ignore it here...

    if (requestedThreads == DEFAULT_MAX_BINDER_THREADS) return;

    if (requestedThreads == 0) return;

    ALOGW("Thread pool configuration of size %zu requested, but startThreadPool was not called.",

          requestedThreads);

}

#define DRIVER_FEATURES_PATH "/dev/binderfs/features/"

bool ProcessState::isDriverFeatureEnabled(const DriverFeature feature) {

    // Use static variable to cache the results.

private:

    static sp<ProcessState> init(const char* defaultDriver, bool requireDefault);

    void checkExpectingThreadPoolStart() const;

    static void onFork();

    static void parentPostFork();

    static void childPostFork();