unplugged-system/frameworks/native/services/surfaceflinger/main_surfaceflinger.cpp

/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// TODO(b/129481165): remove the #pragma below and fix conversion issues
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wconversion"

#include <sys/resource.h>

#include <sched.h>

#include <android/frameworks/displayservice/1.0/IDisplayService.h>
#include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
#include <android/hardware/graphics/allocator/2.0/IAllocator.h>
#include <android/hardware/graphics/allocator/3.0/IAllocator.h>
#include <binder/IPCThreadState.h>
#include <binder/IServiceManager.h>
#include <binder/ProcessState.h>
#include <configstore/Utils.h>
#include <displayservice/DisplayService.h>
#include <errno.h>
#include <hidl/LegacySupport.h>
#include <processgroup/sched_policy.h>
#include "SurfaceFlinger.h"
#include "SurfaceFlingerFactory.h"
#include "SurfaceFlingerProperties.h"
#include <cutils/properties.h>
#ifdef MTK_SF_DEBUG_SUPPORT
#include "mediatek/CoreDump.h"
#endif

#ifdef MTK_SF_CPU_POLICY
#include "mediatek/SfCpuPolicyAdapter/SfCpuPolicyAdapter.h"
#endif

#ifdef MTK_SF_AIDL
#include "mediatek/aidl/MtkSF_ext.h"
using ::aidl::vendor::mediatek::framework::mtksf_ext::MtkSF_ext;
#endif

using namespace android;

static status_t startGraphicsAllocatorService() {
    using android::hardware::configstore::getBool;
    using android::hardware::configstore::V1_0::ISurfaceFlingerConfigs;
    if (!android::sysprop::start_graphics_allocator_service(false)) {
        return OK;
    }

    status_t result = hardware::registerPassthroughServiceImplementation<
            android::hardware::graphics::allocator::V3_0::IAllocator>();
    if (result == OK) {
        return OK;
    }

    result = hardware::registerPassthroughServiceImplementation<
            android::hardware::graphics::allocator::V2_0::IAllocator>();
    if (result != OK) {
        ALOGE("could not start graphics allocator service");
        return result;
    }

    return OK;
}

static void startDisplayService() {
    using android::frameworks::displayservice::V1_0::implementation::DisplayService;
    using android::frameworks::displayservice::V1_0::IDisplayService;

    sp<IDisplayService> displayservice = sp<DisplayService>::make();
    status_t err = displayservice->registerAsService();

    // b/141930622
    if (err != OK) {
        ALOGE("Did not register (deprecated) IDisplayService service.");
    }
}

int main(int, char**) {
    signal(SIGPIPE, SIG_IGN);
#ifdef MTK_SF_DEBUG_SUPPORT
    directcoredump_init();
#endif

    hardware::configureRpcThreadpool(1 /* maxThreads */,
            false /* callerWillJoin */);

    startGraphicsAllocatorService();

#ifdef MTK_AOSP_DISPLAY_BUGFIX
    //when open feature option, still can be controlled by property
    char value[PROPERTY_VALUE_MAX];
    property_get("debug.sf.set_binder_thread_rt", value, "0");
    int setBinderRT = atoi(value);
    ALOGD("setBinderRT %d",setBinderRT);
    if (setBinderRT != 1) {
        ProcessState::self()->setThreadPoolMaxThreadCount(4);
    }
#else
    // When SF is launched in its own process, limit the number of
    // binder threads to 4.
    ProcessState::self()->setThreadPoolMaxThreadCount(4);
#endif

    // Set uclamp.min setting on all threads, maybe an overkill but we want
    // to cover important threads like RenderEngine.
    if (SurfaceFlinger::setSchedAttr(true) != NO_ERROR) {
        ALOGW("Failed to set uclamp.min during boot: %s", strerror(errno));
    }

    // The binder threadpool we start will inherit sched policy and priority
    // of (this) creating thread. We want the binder thread pool to have
    // SCHED_FIFO policy and priority 1 (lowest RT priority)
    // Once the pool is created we reset this thread's priority back to
    // original.
    int newPriority = 0;
    int origPolicy = sched_getscheduler(0);
    struct sched_param origSchedParam;

    int errorInPriorityModification = sched_getparam(0, &origSchedParam);
    if (errorInPriorityModification == 0) {
        int policy = SCHED_FIFO;
        newPriority = sched_get_priority_min(policy);

        struct sched_param param;
        param.sched_priority = newPriority;

        errorInPriorityModification = sched_setscheduler(0, policy, &param);
    }

    // start the thread pool
    sp<ProcessState> ps(ProcessState::self());
#ifdef MTK_AOSP_DISPLAY_BUGFIX
    if (setBinderRT == 1) {
       ps->setThreadPoolMaxThreadCount(4);
    }
#endif
    ps->startThreadPool();

    // Reset current thread's policy and priority
    if (errorInPriorityModification == 0) {
        errorInPriorityModification = sched_setscheduler(0, origPolicy, &origSchedParam);
    } else {
        ALOGE("Failed to set SurfaceFlinger binder threadpool priority to SCHED_FIFO");
    }

    // instantiate surfaceflinger
    sp<SurfaceFlinger> flinger = surfaceflinger::createSurfaceFlinger();

    // Set the minimum policy of surfaceflinger node to be SCHED_FIFO.
    // So any thread with policy/priority lower than {SCHED_FIFO, 1}, will run
    // at least with SCHED_FIFO policy and priority 1.
    if (errorInPriorityModification == 0) {
        flinger->setMinSchedulerPolicy(SCHED_FIFO, newPriority);
    }

    setpriority(PRIO_PROCESS, 0, PRIORITY_URGENT_DISPLAY);

    set_sched_policy(0, SP_FOREGROUND);

#ifdef MTK_SF_CPU_POLICY
    if (SfCpuPolicyAdapter::isEnabled()
            && SfCpuPolicyAdapter::foregroundEnabled()){
        // doing nothing
    }
#endif

    // initialize before clients can connect
    flinger->init();

    // publish surface flinger
    sp<IServiceManager> sm(defaultServiceManager());
    sm->addService(String16(SurfaceFlinger::getServiceName()), flinger, false,
                   IServiceManager::DUMP_FLAG_PRIORITY_CRITICAL | IServiceManager::DUMP_FLAG_PROTO);

    // publish gui::ISurfaceComposer, the new AIDL interface
    sp<SurfaceComposerAIDL> composerAIDL = sp<SurfaceComposerAIDL>::make(flinger);
    sm->addService(String16("SurfaceFlingerAIDL"), composerAIDL, false,
                   IServiceManager::DUMP_FLAG_PRIORITY_CRITICAL | IServiceManager::DUMP_FLAG_PROTO);

#ifdef MTK_SF_AIDL
    if (MtkSF_ext::descriptor) {
        std::shared_ptr<MtkSF_ext> mtksf_ext = ndk::SharedRefBase::make<MtkSF_ext>();
        const std::string instance = std::string() + MtkSF_ext::descriptor + "/default";
        binder_status_t status = AServiceManager_addService(mtksf_ext->asBinder().get(), instance.c_str());
        CHECK(status == STATUS_OK);
        mtksf_ext->setFlinger(flinger.get());
    } else {
        ALOGE("invalid descriptor, can't start MtkSF_ext");
    }
#endif

    startDisplayService(); // dependency on SF getting registered above

    if (SurfaceFlinger::setSchedFifo(true) != NO_ERROR) {
        ALOGW("Failed to set SCHED_FIFO during boot: %s", strerror(errno));
    }

    // run surface flinger in this thread
    flinger->run();

    return 0;
}

// TODO(b/129481165): remove the #pragma below and fix conversion issues
#pragma clang diagnostic pop // ignored "-Wconversion"