| /* |
| * 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; |
| |
| /** Wrapper around libdmabufinfo. */ |
| public final class DmabufInfoReader { |
| private DmabufInfoReader() {} |
| |
| /** Process dma-buf stats. */ |
| public static final class ProcessDmabuf { |
| /** 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 mapped to the address space. */ |
| public final int mappedSizeKb; |
| /** Count of buffers mapped to the address space. */ |
| public final int mappedBuffersCount; |
| |
| ProcessDmabuf(int retainedSizeKb, int retainedBuffersCount, |
| int mappedSizeKb, int mappedBuffersCount) { |
| this.retainedSizeKb = retainedSizeKb; |
| this.retainedBuffersCount = retainedBuffersCount; |
| this.mappedSizeKb = mappedSizeKb; |
| this.mappedBuffersCount = mappedBuffersCount; |
| } |
| } |
| |
| /** |
| * 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 getProcessStats(int pid); |
| } |