1 /*
2  * Copyright 2018 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 <sched.h>
18 
19 #include <android/hardware/graphics/composer/2.2/IComposer.h>
20 #include <binder/ProcessState.h>
21 #include <composer-passthrough/2.2/HwcLoader.h>
22 #include <hidl/HidlTransportSupport.h>
23 
24 using android::hardware::graphics::composer::V2_2::IComposer;
25 using android::hardware::graphics::composer::V2_2::passthrough::HwcLoader;
26 
main()27 int main() {
28     // the conventional HAL might start binder services
29     android::ProcessState::initWithDriver("/dev/vndbinder");
30     android::ProcessState::self()->setThreadPoolMaxThreadCount(4);
31     android::ProcessState::self()->startThreadPool();
32 
33     // same as SF main thread
34     struct sched_param param = {0};
35     param.sched_priority = 2;
36     if (sched_setscheduler(0, SCHED_FIFO | SCHED_RESET_ON_FORK, &param) != 0) {
37         ALOGE("Couldn't set SCHED_FIFO: %d", errno);
38     }
39 
40     android::hardware::configureRpcThreadpool(4, true /* will join */);
41 
42     android::sp<IComposer> composer = HwcLoader::load();
43     if (composer == nullptr) {
44         return 1;
45     }
46     if (composer->registerAsService() != android::NO_ERROR) {
47         ALOGE("failed to register service");
48         return 1;
49     }
50 
51     android::hardware::joinRpcThreadpool();
52 
53     ALOGE("service is terminating");
54     return 1;
55 }
56