1 /*
2 * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
64 */
65 public static Snapshot readFile(String heapFile, boolean callStack,
66 int debugLevel)
67 throws IOException {
68 int dumpNumber = 1;
69 int pos = heapFile.lastIndexOf('#');
70 if (pos > -1) {
71 String num = heapFile.substring(pos+1, heapFile.length());
72 try {
73 dumpNumber = Integer.parseInt(num, 10);
74 } catch (java.lang.NumberFormatException ex) {
75 String msg = "In file name \"" + heapFile
76 + "\", a dump number was "
77 + "expected after the :, but \""
78 + num + "\" was found instead.";
79 System.err.println(msg);
80 throw new IOException(msg);
81 }
82 heapFile = heapFile.substring(0, pos);
83 }
84 try (PositionDataInputStream in = new PositionDataInputStream(
85 new BufferedInputStream(new FileInputStream(heapFile)))) {
86 int i = in.readInt();
87 if (i == HprofReader.MAGIC_NUMBER) {
88 Reader r
89 = new HprofReader(heapFile, in, dumpNumber,
90 callStack, debugLevel);
91 return r.read();
92 } else {
93 throw new IOException("Unrecognized magic number: " + i);
94 }
95 }
96 }
97
98 /**
99 * Get Stack Traces from a Hprof file.
100 *
101 * @param heapFile The name of a file containing a heap dump
102 */
103 public static String getStack(String heapFile, int debugLevel)
104 throws IOException {
105 int dumpNumber = 1;
106 int pos = heapFile.lastIndexOf('#');
107 if (pos > -1) {
108 String num = heapFile.substring(pos+1, heapFile.length());
109 try {
110 dumpNumber = Integer.parseInt(num, 10);
111 } catch (java.lang.NumberFormatException ex) {
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1 /*
2 * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
64 */
65 public static Snapshot readFile(String heapFile, boolean callStack,
66 int debugLevel)
67 throws IOException {
68 int dumpNumber = 1;
69 int pos = heapFile.lastIndexOf('#');
70 if (pos > -1) {
71 String num = heapFile.substring(pos+1, heapFile.length());
72 try {
73 dumpNumber = Integer.parseInt(num, 10);
74 } catch (java.lang.NumberFormatException ex) {
75 String msg = "In file name \"" + heapFile
76 + "\", a dump number was "
77 + "expected after the :, but \""
78 + num + "\" was found instead.";
79 System.err.println(msg);
80 throw new IOException(msg);
81 }
82 heapFile = heapFile.substring(0, pos);
83 }
84 GzipRandomAccess access = null;
85 try (PositionDataInputStream in = new PositionDataInputStream(
86 new BufferedInputStream(new FileInputStream(heapFile)))) {
87 int i = in.readInt();
88 if (i == HprofReader.MAGIC_NUMBER) {
89 Reader r
90 = new HprofReader(heapFile, in, dumpNumber,
91 callStack, debugLevel);
92 return r.read();
93 } else if ((access = GzipRandomAccess.getAccess(heapFile, 16)) != null) {
94 in.close();
95 try (PositionDataInputStream in2 = new PositionDataInputStream(
96 new BufferedInputStream(access.asStream(0)))) {
97 i = in2.readInt();
98 if (i == HprofReader.MAGIC_NUMBER) {
99 Reader r
100 = new HprofReader(access.asFileBuffer(), in2, dumpNumber,
101 callStack, debugLevel);
102 return r.read();
103 } else {
104 throw new IOException("Unrecognized magic number in gzipped file: " + i);
105 }
106 }
107 } else {
108 throw new IOException("Unrecognized magic number: " + i);
109 }
110 }
111 }
112
113 /**
114 * Get Stack Traces from a Hprof file.
115 *
116 * @param heapFile The name of a file containing a heap dump
117 */
118 public static String getStack(String heapFile, int debugLevel)
119 throws IOException {
120 int dumpNumber = 1;
121 int pos = heapFile.lastIndexOf('#');
122 if (pos > -1) {
123 String num = heapFile.substring(pos+1, heapFile.length());
124 try {
125 dumpNumber = Integer.parseInt(num, 10);
126 } catch (java.lang.NumberFormatException ex) {
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