--- /dev/null 2019-02-07 20:54:51.336000000 +0300 +++ new/test/lib/jdk/test/lib/hprof/HprofParser.java 2019-02-08 18:34:04.871068526 +0300 @@ -0,0 +1,97 @@ +/* + * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +package jdk.test.lib.hprof; + +import java.io.BufferedOutputStream; +import java.io.File; +import java.io.FileOutputStream; +import java.io.PrintStream; + +import jdk.test.lib.hprof.model.Snapshot; +import jdk.test.lib.hprof.parser.Reader; + +/** + * Helper class to parse a java heap dump file. + */ +public class HprofParser { + + public static void main(String[] args) throws Exception { + if (args.length < 1) { + System.out.println("No arguments supplied"); + } + File dump = new File(args[0]); + if (!dump.exists() || !dump.isFile()) { + throw new RuntimeException("The dump file does not exist or not a file"); + } + parse(dump); + } + + /** + * @see #parse(File, boolean, boolean, boolean) + */ + public static File parse(File dump) throws Exception { + return parse(dump, false, true, true); + } + + /** + * @see #parse(File, boolean, boolean, boolean) + */ + public static File parseWithDebugInfo(File dump) throws Exception { + return parse(dump, true, true, true); + } + + /** + * Parse a java heap dump file + * + * @param dump Heap dump file to parse + * @param debug Turn on/off debug file parsing + * @param callStack Turn on/off tracking of object allocation call stack + * @param calculateRefs Turn on/off tracking object allocation call stack + * @throws Exception + * @return File containing output from the parser + */ + public static File parse(File dump, boolean debug, boolean callStack, boolean calculateRefs) throws Exception { + File out = new File("hprof." + System.currentTimeMillis() + ".out"); + if (out.exists()) { + out.delete(); + } + + PrintStream psSystemOut = System.out; + try (PrintStream psHprof = new PrintStream(new BufferedOutputStream(new FileOutputStream(out.getAbsolutePath())))) { + System.setOut(psHprof); + + int debugLevel = debug ? 2 : 0; + try (Snapshot snapshot = Reader.readFile(dump.getAbsolutePath(), callStack, debugLevel)) { + System.out.println("Snapshot read, resolving..."); + snapshot.resolve(calculateRefs); + System.out.println("Snapshot resolved."); + } + } finally { + System.setOut(psSystemOut); + } + + return out; + } + +}