1 /*
2  * Copyright (C) 2017 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 #ifndef ANDROID_STARTBOOTANIMTHREAD_H
18 #define ANDROID_STARTBOOTANIMTHREAD_H
19 
20 #include <stddef.h>
21 
22 #include <utils/Mutex.h>
23 #include <utils/Thread.h>
24 
25 namespace android {
26 
27 class StartPropertySetThread : public Thread {
28 // Boot animation is triggered via calls to "property_set()" which can block
29 // if init's executing slow operation such as 'mount_all --late' (currently
30 // happening 1/10th with fsck)  concurrently. Running in a separate thread
31 // allows to pursue the SurfaceFlinger's init process without blocking.
32 // see b/34499826.
33 // Any property_set() will block during init stage so need to be offloaded
34 // to this thread. see b/63844978.
35 public:
36     explicit StartPropertySetThread(bool timestampPropertyValue);
37     status_t Start();
38 private:
39     virtual bool threadLoop();
40     static constexpr const char* kTimestampProperty = "service.sf.present_timestamp";
41     const bool mTimestampPropertyValue;
42 };
43 
44 }
45 
46 #endif // ANDROID_STARTBOOTANIMTHREAD_H
47