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 size_t debugStrPos = 0;
42 if (!mMemoryManager.logStateToBuffer(debugStr, &debugStrPos,
43 kDebugStringSize)) {
44 LOGE("Memory manager debug dump failed.");
45 } else if (!mEventLoop.logStateToBuffer(debugStr, &debugStrPos,
46 kDebugStringSize)) {
47 LOGE("Event loop debug dump failed.");
48 } else if (!mSensorRequestManager.logStateToBuffer(debugStr, &debugStrPos,
49 kDebugStringSize)) {
50 LOGE("Sensor request manager debug dump failed.");
51 } else if (!mGnssManager.logStateToBuffer(debugStr, &debugStrPos,
52 kDebugStringSize)) {
53 LOGE("GNSS manager debug dump failed.");
54 } else if (!mWifiRequestManager.logStateToBuffer(debugStr, &debugStrPos,
55 kDebugStringSize)) {
56 LOGE("Wifi request manager debug dump failed.");
57 } else if (!mWwanRequestManager.logStateToBuffer(debugStr, &debugStrPos,
58 kDebugStringSize)) {
59 LOGE("WWAN request manager debug dump failed.");
60 }
61 LOGD("Debug dump used %zu bytes of log buffer", debugStrPos);
62 }
63
64 return UniquePtr<char>(debugStr);
65 }
66
getNextInstanceId()67 uint32_t EventLoopManager::getNextInstanceId() {
68 ++mLastInstanceId;
69
70 // ~4 billion instance IDs should be enough for anyone... if we need to
71 // support wraparound for stress testing load/unload, then we can set a flag
72 // when wraparound occurs and use EventLoop::findNanoappByInstanceId to ensure
73 // we avoid conflicts
74 if (mLastInstanceId == kBroadcastInstanceId
75 || mLastInstanceId == kSystemInstanceId) {
76 FATAL_ERROR("Exhausted instance IDs!");
77 }
78
79 return mLastInstanceId;
80 }
81
lateInit()82 void EventLoopManager::lateInit() {
83 mGnssManager.init();
84 mWifiRequestManager.init();
85 mWwanRequestManager.init();
86
87 #ifdef CHRE_AUDIO_SUPPORT_ENABLED
88 mAudioRequestManager.init();
89 #endif // CHRE_AUDIO_SUPPORT_ENABLED
90 }
91
92 // Explicitly instantiate the EventLoopManagerSingleton to reduce codesize.
93 template class Singleton<EventLoopManager>;
94
95 } // namespace chre
96