Merge "reduce flunctuation in boot animation start / stopping time" into oc-dev

#define LOG_TAG "BootAnimation"

#include <stdint.h>

#include <inttypes.h>

#include <binder/IPCThreadState.h>

#include <binder/ProcessState.h>

#include <binder/IServiceManager.h>

#include <cutils/properties.h>

#include <sys/resource.h>

#include <utils/Log.h>

#include <utils/SystemClock.h>

#include <utils/threads.h>

#include "BootAnimation.h"

        sp<ProcessState> proc(ProcessState::self());

        ProcessState::self()->startThreadPool();

        // TODO: replace this with better waiting logic in future, b/35253872

        int64_t waitStartTime = elapsedRealtime();

        sp<IServiceManager> sm = defaultServiceManager();

        const String16 name("SurfaceFlinger");

        const int SERVICE_WAIT_SLEEP_MS = 100;

        const int LOG_PER_RETRIES = 10;

        int retry = 0;

        while (sm->checkService(name) == nullptr) {

            retry++;

            if ((retry % LOG_PER_RETRIES) == 0) {

                ALOGW("Waiting for SurfaceFlinger, waited for %" PRId64 " ms",

                      elapsedRealtime() - waitStartTime);

            }

            usleep(SERVICE_WAIT_SLEEP_MS * 1000);

        };

        int64_t totalWaited = elapsedRealtime() - waitStartTime;

        if (totalWaited > SERVICE_WAIT_SLEEP_MS) {

            ALOGI("Waiting for SurfaceFlinger took %" PRId64 " ms", totalWaited);

        }

        // create the boot animation object

        sp<BootAnimation> boot = new BootAnimation();