1 /*
2 * Copyright (C) 2024 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 <powermanager/PowerHintSessionWrapper.h>
18
19 using namespace aidl::android::hardware::power;
20
21 namespace android::power {
22
23 // Caches support for a given call in a static variable, checking both
24 // the return value and interface version.
25 #define CACHE_SUPPORT(version, method) \
26 ({ \
27 static bool support = mInterfaceVersion >= version; \
28 !support ? decltype(method)::unsupported() : ({ \
29 auto result = method; \
30 if (result.isUnsupported()) { \
31 support = false; \
32 } \
33 std::move(result); \
34 }); \
35 })
36
37 #define CHECK_SESSION(resultType) \
38 if (mSession == nullptr) { \
39 return HalResult<resultType>::failed("Session not running"); \
40 }
41
42 // FWD_CALL just forwards calls from the wrapper to the session object.
43 // It only works if the call has no return object, as is the case with all calls
44 // except getSessionConfig.
45 #define FWD_CALL(version, name, args, untypedArgs) \
46 HalResult<void> PowerHintSessionWrapper::name args { \
47 CHECK_SESSION(void) \
48 return CACHE_SUPPORT(version, HalResult<void>::fromStatus(mSession->name untypedArgs)); \
49 }
50
PowerHintSessionWrapper(std::shared_ptr<IPowerHintSession> && session)51 PowerHintSessionWrapper::PowerHintSessionWrapper(std::shared_ptr<IPowerHintSession>&& session)
52 : mSession(session) {
53 if (mSession != nullptr) {
54 mSession->getInterfaceVersion(&mInterfaceVersion);
55 }
56 }
57
58 // Support for individual hints/modes is not really handled here since there
59 // is no way to check for it, so in the future if a way to check that is added,
60 // this will need to be updated.
61
62 FWD_CALL(2, updateTargetWorkDuration, (int64_t in_targetDurationNanos), (in_targetDurationNanos));
63 FWD_CALL(2, reportActualWorkDuration, (const std::vector<WorkDuration>& in_durations),
64 (in_durations));
65 FWD_CALL(2, pause, (), ());
66 FWD_CALL(2, resume, (), ());
67 FWD_CALL(2, close, (), ());
68 FWD_CALL(4, sendHint, (SessionHint in_hint), (in_hint));
69 FWD_CALL(4, setThreads, (const std::vector<int32_t>& in_threadIds), (in_threadIds));
70 FWD_CALL(5, setMode, (SessionMode in_type, bool in_enabled), (in_type, in_enabled));
71
getSessionConfig()72 HalResult<SessionConfig> PowerHintSessionWrapper::getSessionConfig() {
73 CHECK_SESSION(SessionConfig);
74 SessionConfig config;
75 return CACHE_SUPPORT(5,
76 HalResult<SessionConfig>::fromStatus(mSession->getSessionConfig(&config),
77 std::move(config)));
78 }
79
80 } // namespace android::power
81