main_surfaceflinger.cpp revision 391ab069b114d5012b1fa0a48c9bc2b841974970 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <sys/resource.h>
18
19#include <sched.h>
20
21#include <cutils/sched_policy.h>
22#include <binder/IServiceManager.h>
23#include <binder/IPCThreadState.h>
24#include <binder/ProcessState.h>
25#include <binder/IServiceManager.h>
26#include "GpuService.h"
27#include "SurfaceFlinger.h"
28
29using namespace android;
30
31int main(int, char**) {
32    signal(SIGPIPE, SIG_IGN);
33    // When SF is launched in its own process, limit the number of
34    // binder threads to 4.
35    ProcessState::self()->setThreadPoolMaxThreadCount(4);
36
37    // start the thread pool
38    sp<ProcessState> ps(ProcessState::self());
39    ps->startThreadPool();
40
41    // instantiate surfaceflinger
42    sp<SurfaceFlinger> flinger = new SurfaceFlinger();
43
44    setpriority(PRIO_PROCESS, 0, PRIORITY_URGENT_DISPLAY);
45
46    set_sched_policy(0, SP_FOREGROUND);
47
48    // Put most SurfaceFlinger threads in the system-background cpuset
49    // Keeps us from unnecessarily using big cores
50    // Do this after the binder thread pool init
51    if (cpusets_enabled()) set_cpuset_policy(0, SP_SYSTEM);
52
53    // initialize before clients can connect
54    flinger->init();
55
56    // publish surface flinger
57    sp<IServiceManager> sm(defaultServiceManager());
58    sm->addService(String16(SurfaceFlinger::getServiceName()), flinger, false);
59
60    // publish GpuService
61    sp<GpuService> gpuservice = new GpuService();
62    sm->addService(String16(GpuService::SERVICE_NAME), gpuservice, false);
63
64    struct sched_param param = {0};
65    param.sched_priority = 2;
66    if (sched_setscheduler(0, SCHED_FIFO, &param) != 0) {
67        ALOGE("Couldn't set SCHED_FIFO");
68    }
69
70    // run surface flinger in this thread
71    flinger->run();
72
73    return 0;
74}
75