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/*
* 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;
import android.annotation.Nullable;
/** JNI wrapper around libmeminfo for kernel memory allocation stats (dmabufs, gpu driver). */
public final class KernelAllocationStats {
private KernelAllocationStats() {}
/** Process dma-buf stats. */
public static final class ProcessDmabuf {
public final int uid;
public final String processName;
public final int oomScore;
/** Size of buffers retained by the process. */
public final int retainedSizeKb;
/** Number of buffers retained by the process. */
public final int retainedBuffersCount;
/** Size of buffers shared with Surface Flinger. */
public final int surfaceFlingerSizeKb;
/** Count of buffers shared with Surface Flinger. */
public final int surfaceFlingerCount;
ProcessDmabuf(int uid, String processName, int oomScore, int retainedSizeKb,
int retainedBuffersCount, int surfaceFlingerSizeKb,
int surfaceFlingerCount) {
this.uid = uid;
this.processName = processName;
this.oomScore = oomScore;
this.retainedSizeKb = retainedSizeKb;
this.retainedBuffersCount = retainedBuffersCount;
this.surfaceFlingerSizeKb = surfaceFlingerSizeKb;
this.surfaceFlingerCount = surfaceFlingerCount;
}
}
/**
* Return stats for DMA-BUFs retained by process pid or null if the DMA-BUF
* stats could not be read.
*/
@Nullable
public static native ProcessDmabuf[] getDmabufAllocations();
/** Pid to gpu memory size. */
public static final class ProcessGpuMem {
public final int pid;
public final int gpuMemoryKb;
ProcessGpuMem(int pid, int gpuMemoryKb) {
this.pid = pid;
this.gpuMemoryKb = gpuMemoryKb;
}
}
/** Return list of pid to gpu memory size. */
public static native ProcessGpuMem[] getGpuAllocations();
}
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