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 = EventLoopManagerSingleton::get()
31 ->getEventLoop().getCurrentNanoapp();
32 CHRE_ASSERT_LOG(currentNanoapp, "%s called with no CHRE app context",
33 functionName);
34 return currentNanoapp;
35 }
36
debugDump()37 UniquePtr<char> EventLoopManager::debugDump() {
38 constexpr size_t kDebugStringSize = 4096;
39 char *debugStr = static_cast<char *>(memoryAlloc(kDebugStringSize));
40 if (debugStr == nullptr) {
41 LOG_OOM();
42 } else {
43 size_t debugStrPos = 0;
44 mMemoryManager.logStateToBuffer(debugStr, &debugStrPos, kDebugStringSize);
45 mEventLoop.logStateToBuffer(debugStr, &debugStrPos, kDebugStringSize);
46 mSensorRequestManager.logStateToBuffer(debugStr, &debugStrPos,
47 kDebugStringSize);
48 #ifdef CHRE_GNSS_SUPPORT_ENABLED
49 mGnssManager.logStateToBuffer(debugStr, &debugStrPos, kDebugStringSize);
50 #endif // CHRE_GNSS_SUPPORT_ENABLED
51 #ifdef CHRE_WIFI_SUPPORT_ENABLED
52 mWifiRequestManager.logStateToBuffer(debugStr, &debugStrPos,
53 kDebugStringSize);
54 #endif // CHRE_WIFI_SUPPORT_ENABLED
55 #ifdef CHRE_WWAN_SUPPORT_ENABLED
56 mWwanRequestManager.logStateToBuffer(debugStr, &debugStrPos,
57 kDebugStringSize);
58 #endif // CHRE_WWAN_SUPPORT_ENABLED
59 #ifdef CHRE_AUDIO_SUPPORT_ENABLED
60 mAudioRequestManager.logStateToBuffer(debugStr, &debugStrPos,
61 kDebugStringSize);
62 #endif // CHRE_AUDIO_SUPPORT_ENABLED
63
64 LOGD("Debug dump used %zu bytes of log buffer", debugStrPos);
65 }
66
67 return UniquePtr<char>(debugStr);
68 }
69
getNextInstanceId()70 uint32_t EventLoopManager::getNextInstanceId() {
71 ++mLastInstanceId;
72
73 // ~4 billion instance IDs should be enough for anyone... if we need to
74 // support wraparound for stress testing load/unload, then we can set a flag
75 // when wraparound occurs and use EventLoop::findNanoappByInstanceId to ensure
76 // we avoid conflicts
77 if (mLastInstanceId == kBroadcastInstanceId
78 || mLastInstanceId == kSystemInstanceId) {
79 FATAL_ERROR("Exhausted instance IDs!");
80 }
81
82 return mLastInstanceId;
83 }
84
lateInit()85 void EventLoopManager::lateInit() {
86 #ifdef CHRE_GNSS_SUPPORT_ENABLED
87 mGnssManager.init();
88 #endif // CHRE_GNSS_SUPPORT_ENABLED
89
90 #ifdef CHRE_WIFI_SUPPORT_ENABLED
91 mWifiRequestManager.init();
92 #endif // CHRE_WIFI_SUPPORT_ENABLED
93
94 #ifdef CHRE_WWAN_SUPPORT_ENABLED
95 mWwanRequestManager.init();
96 #endif // CHRE_WWAN_SUPPORT_ENABLED
97
98 #ifdef CHRE_AUDIO_SUPPORT_ENABLED
99 mAudioRequestManager.init();
100 #endif // CHRE_AUDIO_SUPPORT_ENABLED
101 }
102
103 // Explicitly instantiate the EventLoopManagerSingleton to reduce codesize.
104 template class Singleton<EventLoopManager>;
105
106 } // namespace chre
107