1 /*
2 * Copyright 2022, 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 <android-base/logging.h>
18 #include <android/binder_manager.h>
19 #include <android/binder_process.h>
20 #include <sched.h>
21
22 #include "Composer.h"
23
24 using aidl::android::hardware::graphics::composer3::impl::Composer;
25
main(int,char **)26 int main(int /*argc*/, char** /*argv*/) {
27 ALOGI("RanchuHWC (HWComposer3/HWC3) starting up...");
28
29 // same as SF main thread
30 struct sched_param param = {0};
31 param.sched_priority = 2;
32 if (sched_setscheduler(0, SCHED_FIFO | SCHED_RESET_ON_FORK, ¶m) != 0) {
33 ALOGE("%s: failed to set priority: %s", __FUNCTION__, strerror(errno));
34 }
35
36 auto composer = ndk::SharedRefBase::make<Composer>();
37 CHECK(composer != nullptr);
38
39 const std::string instance = std::string() + Composer::descriptor + "/default";
40 binder_status_t status =
41 AServiceManager_addService(composer->asBinder().get(), instance.c_str());
42 CHECK(status == STATUS_OK);
43
44 // Thread pool for system libbinder (via libbinder_ndk) for aidl services
45 // IComposer and IDisplay
46 ABinderProcess_setThreadPoolMaxThreadCount(5);
47 ABinderProcess_startThreadPool();
48 ABinderProcess_joinThreadPool();
49
50 return EXIT_FAILURE;
51 }
52