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/*
* 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 <common/FlagManager.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"
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);
hardware::configureRpcThreadpool(1 /* maxThreads */,
false /* callerWillJoin */);
startGraphicsAllocatorService();
// When SF is launched in its own process, limit the number of
// binder threads to 4.
ProcessState::self()->setThreadPoolMaxThreadCount(4);
// 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, ¶m);
}
// start the thread pool
sp<ProcessState> ps(ProcessState::self());
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);
// 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);
if (FlagManager::getInstance().misc1()) {
composerAIDL->setMinSchedulerPolicy(SCHED_FIFO, newPriority);
}
sm->addService(String16("SurfaceFlingerAIDL"), composerAIDL, false,
IServiceManager::DUMP_FLAG_PRIORITY_CRITICAL | IServiceManager::DUMP_FLAG_PROTO);
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"
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