powerstats: Introduce CpupmStateResidencyDataProvider
Bug: 263276734
Bug: 264728626
Test: dumpsys android.hardware.power.stats.IPowerStats/default
Change-Id: I0887dde159d6f6ed1f5c470464eaf817ecc7b4eb
Signed-off-by: Darren Hsu <darrenhsu@google.com>
diff --git a/powerstats/include/CpupmStateResidencyDataProvider.h b/powerstats/include/CpupmStateResidencyDataProvider.h
new file mode 100644
index 0000000..c04e11e
--- /dev/null
+++ b/powerstats/include/CpupmStateResidencyDataProvider.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <PowerStatsAidl.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace power {
+namespace stats {
+
+class CpupmStateResidencyDataProvider : public PowerStats::IStateResidencyDataProvider {
+ public:
+ class Config {
+ public:
+ // List of power entity name pairs (name to display, name to parse)
+ std::vector<std::pair<std::string, std::string>> entities;
+
+ // List of state pairs (state to display, state to parse).
+ std::vector<std::pair<std::string, std::string>> states;
+ };
+
+ /*
+ * path - path to cpupm sysfs node.
+ */
+ CpupmStateResidencyDataProvider(const std::string &path, const Config &config);
+ ~CpupmStateResidencyDataProvider() = default;
+
+ /*
+ * See IStateResidencyDataProvider::getStateResidencies
+ */
+ bool getStateResidencies(
+ std::unordered_map<std::string, std::vector<StateResidency>> *residencies) override;
+
+ /*
+ * See IStateResidencyDataProvider::getInfo
+ */
+ std::unordered_map<std::string, std::vector<State>> getInfo() override;
+
+ private:
+ int32_t matchEntity(char const *line);
+ int32_t matchState(char const *line);
+ bool parseState(char const *line, uint64_t *duration, uint64_t *count);
+
+ // A constant to represent the number of microseconds in one millisecond.
+ const uint64_t US_TO_MS = 1000;
+
+ const std::string mPath;
+ const Config mConfig;
+};
+
+} // namespace stats
+} // namespace power
+} // namespace hardware
+} // namespace android
+} // namespace aidl