/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.server.am;
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import android.content.ContentProvider;
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import android.content.ContentValues;
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import android.database.Cursor;
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import android.net.Uri;
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import android.os.Environment;
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import android.os.ParcelFileDescriptor;
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import java.io.File;
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import java.io.FileNotFoundException;
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public class DumpHeapProvider extends ContentProvider {
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static final Object sLock = new Object();
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static File sHeapDumpJavaFile;
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static public File getJavaFile() {
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synchronized (sLock) {
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return sHeapDumpJavaFile;
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}
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}
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@Override
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public boolean onCreate() {
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synchronized (sLock) {
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File dataDir = Environment.getDataDirectory();
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File systemDir = new File(dataDir, "system");
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File heapdumpDir = new File(systemDir, "heapdump");
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heapdumpDir.mkdir();
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sHeapDumpJavaFile = new File(heapdumpDir, "javaheap.bin");
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}
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return true;
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}
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@Override
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public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
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return null;
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}
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@Override
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public String getType(Uri uri) {
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return "application/octet-stream";
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}
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@Override
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public Uri insert(Uri uri, ContentValues values) {
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return null;
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}
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@Override
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public int delete(Uri uri, String selection, String[] selectionArgs) {
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return 0;
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}
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@Override
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public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
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return 0;
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}
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@Override
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public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException {
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synchronized (sLock) {
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String path = uri.getEncodedPath();
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final String tag = Uri.decode(path);
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if (tag.equals("/java")) {
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return ParcelFileDescriptor.open(sHeapDumpJavaFile,
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ParcelFileDescriptor.MODE_READ_ONLY);
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} else {
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throw new FileNotFoundException("Invalid path for " + uri);
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}
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}
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}
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}
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