gecko-dev/gc/boehm/leaksoup/Addr2Line.java

/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (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.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is Mozilla Communicator client code, released
 * March 31, 1998.
 *
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s):
 *
 * Patrick C. Beard <beard@netscape.com>
 *
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU Public License (the "GPL"), in which case the
 * provisions of the GPL are applicable instead of those above.
 * If you wish to allow use of your version of this file only
 * under the terms of the GPL and not to allow others to use your
 * version of this file under the NPL, indicate your decision by
 * deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL.  If you do not delete
 * the provisions above, a recipient may use your version of this
 * file under either the NPL or the GPL.
 */

/*
  Addr2Line.java

  Invokes the addr2line process to convert library +offset pairs into
  filepath:line values.

  by Patrick C. Beard.
 */

import java.util.*;
import java.io.*;

public class Addr2Line {
    private Process addr2line;
    private BufferedWriter stdin;
    private BufferedReader stdout;
    private BufferedReader stderr;

    public Addr2Line(String library) throws IOException {
	String[] args = { "addr2line", "-C", "-f", "-e", library };
	addr2line = Runtime.getRuntime().exec(args);
	stdin = new BufferedWriter(new OutputStreamWriter(addr2line.getOutputStream()));
	stdout = new BufferedReader(new InputStreamReader(addr2line.getInputStream()));
	stderr = new BufferedReader(new InputStreamReader(addr2line.getErrorStream()));
    }

    public String getLine(String address) throws IOException {
	stdin.write(address + "\n"); stdin.flush();
	String symbol = stdout.readLine();
	String source = stdout.readLine();
	return symbol + "[" + source + "]";
    }
}