1 /*
2  * Copyright (C) 2016 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 "chre/core/event_loop_manager.h"
18 
19 #include "chre/platform/fatal_error.h"
20 #include "chre/platform/memory.h"
21 #include "chre/util/lock_guard.h"
22 
23 namespace chre {
24 
freeEventDataCallback(uint16_t,void * eventData)25 void freeEventDataCallback(uint16_t /*eventType*/, void *eventData) {
26   memoryFree(eventData);
27 }
28 
validateChreApiCall(const char * functionName)29 Nanoapp *EventLoopManager::validateChreApiCall(const char *functionName) {
30   chre::Nanoapp *currentNanoapp =
31       EventLoopManagerSingleton::get()->getEventLoop().getCurrentNanoapp();
32   CHRE_ASSERT_LOG(currentNanoapp, "%s called with no CHRE app context",
33                   functionName);
34   return currentNanoapp;
35 }
36 
getNextInstanceId()37 uint32_t EventLoopManager::getNextInstanceId() {
38   ++mLastInstanceId;
39 
40   // ~4 billion instance IDs should be enough for anyone... if we need to
41   // support wraparound for stress testing load/unload, then we can set a flag
42   // when wraparound occurs and use EventLoop::findNanoappByInstanceId to ensure
43   // we avoid conflicts
44   if (mLastInstanceId == kBroadcastInstanceId ||
45       mLastInstanceId == kSystemInstanceId) {
46     FATAL_ERROR("Exhausted instance IDs!");
47   }
48 
49   return mLastInstanceId;
50 }
51 
lateInit()52 void EventLoopManager::lateInit() {
53 #ifdef CHRE_SENSORS_SUPPORT_ENABLED
54   mSensorRequestManager.init();
55 #endif  // CHRE_SENSORS_SUPPORT_ENABLED
56 
57 #ifdef CHRE_GNSS_SUPPORT_ENABLED
58   mGnssManager.init();
59 #endif  // CHRE_GNSS_SUPPORT_ENABLED
60 
61 #ifdef CHRE_WIFI_SUPPORT_ENABLED
62   mWifiRequestManager.init();
63 #endif  // CHRE_WIFI_SUPPORT_ENABLED
64 
65 #ifdef CHRE_WWAN_SUPPORT_ENABLED
66   mWwanRequestManager.init();
67 #endif  // CHRE_WWAN_SUPPORT_ENABLED
68 
69 #ifdef CHRE_AUDIO_SUPPORT_ENABLED
70   mAudioRequestManager.init();
71 #endif  // CHRE_AUDIO_SUPPORT_ENABLED
72 }
73 
74 // Explicitly instantiate the EventLoopManagerSingleton to reduce codesize.
75 template class Singleton<EventLoopManager>;
76 
77 }  // namespace chre
78