1 /*
2 * Copyright (C) 2020 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 <cinttypes>
18
19 #include <chre.h>
20
21 #include "chre/util/nanoapp/log.h"
22 #include "chre/util/time.h"
23
24 #define LOG_TAG "[DebugDumpWorld]"
25
26 /**
27 * A nanoapp that log debug data on receiving CHRE_EVENT_DEBUG_DUMP.
28 */
29
30 #ifdef CHRE_NANOAPP_INTERNAL
31 namespace chre {
32 namespace {
33 #endif // CHRE_NANOAPP_INTERNAL
34
35 namespace {
36
37 uint32_t gEventCount = 0;
38 uint64_t gDwellTimeNs = 0;
39
40 } // namespace
41
nanoappStart()42 bool nanoappStart() {
43 LOGI("Debug dump world start");
44 chreConfigureDebugDumpEvent(true /* enable */);
45 return true;
46 }
47
nanoappEnd()48 void nanoappEnd() {
49 LOGI("Debug dump world end");
50
51 // No need to disable debug dump event delivery since nanoapps can't receive
52 // events after nanoappEnd anyway.
53 }
54
handleDebugDumpEvent()55 void handleDebugDumpEvent() {
56 // CHRE adds the nanoapp name / ID to the debug dump automatically.
57 chreDebugDumpLog(" Debug event count: %" PRIu32 "\n", ++gEventCount);
58 chreDebugDumpLog(" Total dwell time: %" PRIu64 " us\n",
59 gDwellTimeNs / chre::kOneMicrosecondInNanoseconds);
60 }
61
nanoappHandleEvent(uint32_t senderInstanceId,uint16_t eventType,const void * eventData)62 void nanoappHandleEvent(uint32_t senderInstanceId, uint16_t eventType,
63 const void *eventData) {
64 uint64_t tic = chreGetTime();
65 switch (eventType) {
66 case CHRE_EVENT_DEBUG_DUMP:
67 LOGI("Receiving debug dump event");
68 handleDebugDumpEvent();
69 break;
70 default:
71 LOGW("Unknown event type %" PRIu16 " received from sender %" PRIu32,
72 eventType, senderInstanceId);
73 break;
74 }
75 gDwellTimeNs += chreGetTime() - tic;
76 }
77
78 #ifdef CHRE_NANOAPP_INTERNAL
79 } // anonymous namespace
80 } // namespace chre
81
82 #include "chre/platform/static_nanoapp_init.h"
83 #include "chre/util/nanoapp/app_id.h"
84 #include "chre/util/system/napp_permissions.h"
85
86 CHRE_STATIC_NANOAPP_INIT(DebugDumpWorld, chre::kDebugDumpWorldAppId, 0,
87 chre::NanoappPermissions::CHRE_PERMS_NONE);
88 #endif // CHRE_NANOAPP_INTERNAL
89