Add atrace HAL 1.0 (db895ad8) · Commits · e / os / android_hardware_interfaces

atrace/1.0/Android.bp

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		// This file is autogenerated by hidl-gen -Landroidbp.

		hidl_interface {
		name: "android.hardware.atrace@1.0",
		root: "android.hardware",
		vndk: {
		enabled: true,
		},
		srcs: [
		"types.hal",
		"IAtraceDevice.hal",
		],
		interfaces: [
		"android.hidl.base@1.0",
		],
		types: [
		"Status",
		"TracingCategory",
		],
		gen_java: true,
		}

atrace/1.0/IAtraceDevice.hal

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		/*
		* Copyright (C) 2018 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.
		*/

		package android.hardware.atrace@1.0;

		interface IAtraceDevice {
		/**
		* Get vendor extended atrace points.
		*
		*
		* @return categories of tracing points the device extended.
		*/
		listCategories() generates (vec<TracingCategory> categories);

		/**
		* A hook when atrace set to enable specific categories, so HAL
		* can enable kernel tracing points and/or notify other things
		* for userspace tracing turning on.
		*
		* @param categories A vector of strings of categories (corresponding to
		* TracingCategory.name) atrace needs to be enabled.
		*
		* @return status SUCCESS on success,
		* ERROR_TRACING_POINT on error with enabling categories,
		* ERROR_INVALID_ARGUMENT on invalid argument passed.
		*/
		enableCategories(vec<string> categories) generates (Status status);

		/**
		* A hook when atrace set to clean up tracing categories, so HAL
		* can disable all kernel tracing points and/or notify other things
		* for userspace tracing turning off.
		*
		* @return status SUCCESS on success,
		* ERROR_TRACING_POINT on error with disabling categories.
		*/
		disableAllCategories() generates (Status status);
		};

atrace/1.0/default/Android.bp

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		//
		// Copyright (C) 2018 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.

		cc_binary {
		name: "android.hardware.atrace@1.0-service",
		defaults: ["hidl_defaults"],
		relative_install_path: "hw",
		vendor: true,
		init_rc: ["android.hardware.atrace@1.0-service.rc"],
		vintf_fragments: ["android.hardware.atrace@1.0-service.xml"],
		srcs: [
		"AtraceDevice.cpp",
		"service.cpp",
		],
		shared_libs: [
		"liblog",
		"libbase",
		"libutils",
		"libhidlbase",
		"libhidltransport",
		"android.hardware.atrace@1.0",
		],
		}

atrace/1.0/default/AtraceDevice.cpp

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		/*
		* Copyright (C) 2018 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.
		*/

		#include <android-base/file.h>
		#include <android-base/logging.h>

		#include "AtraceDevice.h"

		namespace android {
		namespace hardware {
		namespace atrace {
		namespace V1_0 {
		namespace implementation {

		using ::android::hardware::atrace::V1_0::Status;
		using ::android::hardware::atrace::V1_0::TracingCategory;

		struct TracingConfig {
		std::string description;
		std::vector<std::pair<std::string, bool>> paths;
		};

		// This is a map stores categories and their sysfs paths with required flags
		const std::map<std::string, TracingConfig> kTracingMap = {
		// gfx
		{
		"gfx",
		{"Graphics",
		{{"/sys/kernel/debug/tracing/events/mdss/enable", false},
		{"/sys/kernel/debug/tracing/events/sde/enable", false},
		{"/sys/kernel/debug/tracing/events/mali_systrace/enable", false}}},
		},
		{
		"ion",
		{"ION allocation",
		{{"/sys/kernel/debug/tracing/events/kmem/ion_alloc_buffer_start/enable", true}}},
		},
		};

		// Methods from ::android::hardware::atrace::V1_0::IAtraceDevice follow.
		Return<void> AtraceDevice::listCategories(listCategories_cb _hidl_cb) {
		hidl_vec<TracingCategory> categories;
		categories.resize(kTracingMap.size());
		std::size_t i = 0;
		for (auto& c : kTracingMap) {
		categories[i].name = c.first;
		categories[i].description = c.second.description;
		i++;
		}
		_hidl_cb(categories);
		return Void();
		}

		Return<::android::hardware::atrace::V1_0::Status> AtraceDevice::enableCategories(
		const hidl_vec<hidl_string>& categories) {
		if (!categories.size()) {
		return Status::ERROR_INVALID_ARGUMENT;
		}
		for (auto& c : categories) {
		if (kTracingMap.count(c)) {
		for (auto& p : kTracingMap.at(c).paths) {
		if (!android::base::WriteStringToFile("1", p.first)) {
		LOG(ERROR) << "Failed to enable tracing on: " << p.first;
		if (p.second) {
		// disable before return
		disableAllCategories();
		return Status::ERROR_TRACING_POINT;
		}
		}
		}
		} else {
		return Status::ERROR_INVALID_ARGUMENT;
		}
		}
		return Status::SUCCESS;
		}

		Return<::android::hardware::atrace::V1_0::Status> AtraceDevice::disableAllCategories() {
		auto ret = Status::SUCCESS;
		for (auto& c : kTracingMap) {
		for (auto& p : c.second.paths) {
		if (!android::base::WriteStringToFile("0", p.first)) {
		LOG(ERROR) << "Failed to enable tracing on: " << p.first;
		if (p.second) {
		ret = Status::ERROR_TRACING_POINT;
		}
		}
		}
		}
		return ret;
		}

		} // namespace implementation
		} // namespace V1_0
		} // namespace atrace
		} // namespace hardware
		} // namespace android

atrace/1.0/default/AtraceDevice.h

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		/*
		* Copyright (C) 2018 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.
		*/

		#ifndef ANDROID_HARDWARE_ATRACE_V1_0_ATRACEDEVICE_H
		#define ANDROID_HARDWARE_ATRACE_V1_0_ATRACEDEVICE_H

		#include <android/hardware/atrace/1.0/IAtraceDevice.h>
		#include <hidl/MQDescriptor.h>
		#include <hidl/Status.h>

		namespace android {
		namespace hardware {
		namespace atrace {
		namespace V1_0 {
		namespace implementation {

		using ::android::sp;
		using ::android::hardware::hidl_array;
		using ::android::hardware::hidl_memory;
		using ::android::hardware::hidl_string;
		using ::android::hardware::hidl_vec;
		using ::android::hardware::Return;
		using ::android::hardware::Void;

		struct AtraceDevice : public IAtraceDevice {
		// Methods from ::android::hardware::atrace::V1_0::IAtraceDevice follow.
		Return<void> listCategories(listCategories_cb _hidl_cb) override;
		Return<::android::hardware::atrace::V1_0::Status> enableCategories(
		const hidl_vec<hidl_string>& categories) override;
		Return<::android::hardware::atrace::V1_0::Status> disableAllCategories() override;

		// Methods from ::android::hidl::base::V1_0::IBase follow.
		};

		} // namespace implementation
		} // namespace V1_0
		} // namespace atrace
		} // namespace hardware
		} // namespace android

		#endif // ANDROID_HARDWARE_ATRACE_V1_0_ATRACEDEVICE_H