Merge "Check CPU time_in_state from one place" into sc-dev (e2d93d3e) · Commits · e / os / android_frameworks_base

core/java/com/android/internal/os/KernelCpuBpfTracking.java

0 → 100644

+26 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2021 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 com.android.internal.os;

		/** CPU tracking using eBPF. */
		public final class KernelCpuBpfTracking {
		private KernelCpuBpfTracking() {
		}

		/** Returns whether CPU tracking using eBPF is supported. */
		public static native boolean isSupported();
		}

+0 −3

Original line number	Diff line number	Diff line
		@@ -23,9 +23,6 @@ public final class KernelCpuTotalBpfMapReader {
		private KernelCpuTotalBpfMapReader() {
		}

		/** Returns whether total CPU time is measured. */
		public static native boolean isSupported();

		/** Reads total CPU time from bpf map. */
		public static native boolean read(Callback callback);

+1 −0

Original line number	Diff line number	Diff line
		@@ -184,6 +184,7 @@ cc_library_shared {
		"com_android_internal_net_NetworkUtilsInternal.cpp",
		"com_android_internal_os_ClassLoaderFactory.cpp",
		"com_android_internal_os_FuseAppLoop.cpp",
		"com_android_internal_os_KernelCpuBpfTracking.cpp",
		"com_android_internal_os_KernelCpuTotalBpfMapReader.cpp",
		"com_android_internal_os_KernelCpuUidBpfMapReader.cpp",
		"com_android_internal_os_KernelSingleProcessCpuThreadReader.cpp",

+2 −0

Original line number	Diff line number	Diff line
		@@ -190,6 +190,7 @@ extern int register_com_android_internal_content_om_OverlayConfig(JNIEnv *env);
		extern int register_com_android_internal_net_NetworkUtilsInternal(JNIEnv* env);
		extern int register_com_android_internal_os_ClassLoaderFactory(JNIEnv* env);
		extern int register_com_android_internal_os_FuseAppLoop(JNIEnv* env);
		extern int register_com_android_internal_os_KernelCpuBpfTracking(JNIEnv* env);
		extern int register_com_android_internal_os_KernelCpuTotalBpfMapReader(JNIEnv* env);
		extern int register_com_android_internal_os_KernelCpuUidBpfMapReader(JNIEnv *env);
		extern int register_com_android_internal_os_KernelSingleProcessCpuThreadReader(JNIEnv* env);
		@@ -1586,6 +1587,7 @@ static const RegJNIRec gRegJNI[] = {
		REG_JNI(register_android_security_Scrypt),
		REG_JNI(register_com_android_internal_content_NativeLibraryHelper),
		REG_JNI(register_com_android_internal_os_FuseAppLoop),
		REG_JNI(register_com_android_internal_os_KernelCpuBpfTracking),
		REG_JNI(register_com_android_internal_os_KernelCpuTotalBpfMapReader),
		REG_JNI(register_com_android_internal_os_KernelCpuUidBpfMapReader),
		REG_JNI(register_com_android_internal_os_KernelSingleProcessCpuThreadReader),

0 → 100644

+36 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2021 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 "core_jni_helpers.h"

		#include <cputimeinstate.h>

		namespace android {

		static jboolean KernelCpuBpfTracking_isSupported(JNIEnv *, jobject) {
		return android::bpf::isTrackingUidTimesSupported() ? JNI_TRUE : JNI_FALSE;
		}

		static const JNINativeMethod methods[] = {
		{"isSupported", "()Z", (void *)KernelCpuBpfTracking_isSupported},
		};

		int register_com_android_internal_os_KernelCpuBpfTracking(JNIEnv *env) {
		return RegisterMethodsOrDie(env, "com/android/internal/os/KernelCpuBpfTracking", methods,
		NELEM(methods));
		}

		} // namespace android