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 #define LOG_TAG "thermalserviced"
18 #include <log/log.h>
19
20 #include "thermalserviced.h"
21 #include "ThermalService.h"
22 #include "libthermalcallback/ThermalCallback.h"
23
24 #include <android/hardware/thermal/1.1/IThermal.h>
25 #include <binder/IPCThreadState.h>
26 #include <binder/IServiceManager.h>
27 #include <hidl/HidlTransportSupport.h>
28
29 using namespace android;
30 using ::android::hardware::thermal::V1_1::IThermal;
31 using ::android::hardware::thermal::V1_0::Temperature;
32 using ::android::hardware::thermal::V1_1::IThermalCallback;
33 using ::android::hardware::thermal::V1_1::implementation::ThermalCallback;
34 using ::android::hardware::configureRpcThreadpool;
35 using ::android::hardware::hidl_death_recipient;
36 using ::android::hidl::base::V1_0::IBase;
37 using ::android::os::ThermalService;
38
39 template<typename T>
40 using Return = hardware::Return<T>;
41
42 namespace {
43
44 // Our thermalserviced main object
45 ThermalServiceDaemon* gThermalServiceDaemon;
46
47 // Thermal HAL client
48 sp<IThermal> gThermalHal = nullptr;
49
50 // Binder death notifier informing of Thermal HAL death.
51 struct ThermalServiceDeathRecipient : hidl_death_recipient {
serviceDied__anon1d9854770111::ThermalServiceDeathRecipient52 virtual void serviceDied(
53 uint64_t cookie __unused, const wp<IBase>& who __unused) {
54 gThermalHal = nullptr;
55 ALOGE("IThermal HAL died");
56 gThermalServiceDaemon->getThermalHal();
57 }
58 };
59
60 sp<ThermalServiceDeathRecipient> gThermalHalDied = nullptr;
61
62 } // anonymous namespace
63
thermalServiceStartup()64 void ThermalServiceDaemon::thermalServiceStartup() {
65 // Binder IThermalService startup
66 mThermalService = new android::os::ThermalService;
67 mThermalService->publish(mThermalService);
68 // Register IThermalService object with IThermalCallback
69 if (mThermalCallback != nullptr)
70 mThermalCallback->registerThermalService(mThermalService);
71 IPCThreadState::self()->joinThreadPool();
72 }
73
74 // Lookup Thermal HAL, register death notifier, register our
75 // ThermalCallback with the Thermal HAL.
getThermalHal()76 void ThermalServiceDaemon::getThermalHal() {
77 gThermalHal = IThermal::getService();
78 if (gThermalHal == nullptr) {
79 ALOGW("Unable to get Thermal HAL V1.1, vendor thermal event notification not available");
80 return;
81 }
82
83 // Binder death notifier for Thermal HAL
84 if (gThermalHalDied == nullptr)
85 gThermalHalDied = new ThermalServiceDeathRecipient();
86
87 if (gThermalHalDied != nullptr)
88 gThermalHal->linkToDeath(gThermalHalDied, 0x451F /* cookie */);
89
90 if (mThermalCallback != nullptr) {
91 Return<void> ret = gThermalHal->registerThermalCallback(
92 mThermalCallback);
93 if (!ret.isOk())
94 ALOGE("registerThermalCallback failed, status: %s",
95 ret.description().c_str());
96 }
97 }
98
thermalCallbackStartup()99 void ThermalServiceDaemon::thermalCallbackStartup() {
100 // HIDL IThermalCallback startup
101 // Need at least 2 threads in thread pool since we wait for dead HAL
102 // to come back on the binder death notification thread and we need
103 // another thread for the incoming service now available call.
104 configureRpcThreadpool(2, false /* callerWillJoin */);
105 mThermalCallback = new ThermalCallback();
106 // Lookup Thermal HAL and register our ThermalCallback.
107 getThermalHal();
108 }
109
main(int,char **)110 int main(int /*argc*/, char** /*argv*/) {
111 gThermalServiceDaemon = new ThermalServiceDaemon();
112 gThermalServiceDaemon->thermalCallbackStartup();
113 gThermalServiceDaemon->thermalServiceStartup();
114 /* NOTREACHED */
115 }
116