1 /*
2 * Copyright (c) 2003, 2015, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
40 * 2. Find your process, and look in the "SZ" column. Reported in Kbytes.
41 * Windows NT/XP/2000:
42 * 1. Hit Ctrl-Alt-Delete, select Task Manager, go to Processes tab.
43 * 2. Find your process and look in the "Mem Usage" column. Reported in
44 * Kbytes.
45 * Windows 98/ME:
46 * Not supported.
47 */
48
49 import com.sun.management.OperatingSystemMXBean;
50 import java.lang.management.*;
51
52 public class GetCommittedVirtualMemorySize {
53
54 private static OperatingSystemMXBean mbean =
55 (com.sun.management.OperatingSystemMXBean)
56 ManagementFactory.getOperatingSystemMXBean();
57
58 // Careful with these values.
59 private static final long MIN_SIZE_FOR_PASS = 1;
60 // Max size for pass dynamically determined below
61 private static long max_size_for_pass = Long.MAX_VALUE;
62
63 private static boolean trace = false;
64
65 public static void main(String args[]) throws Exception {
66 if (args.length > 0 && args[0].equals("trace")) {
67 trace = true;
68 }
69
70 // 4934082: On Linux, VM size *can* be larger than total swap
71 // size. Linux might not reserve swap memory immediately when
72 // a page is mmaped. This means that the reported committed
73 // memory size can grow beyond the swap limit.
74 long max_size = mbean.getTotalSwapSpaceSize() +
75 mbean.getTotalPhysicalMemorySize();
76
77 if (max_size > 0) {
78 max_size_for_pass = max_size;
79 }
80 long size = mbean.getCommittedVirtualMemorySize();
81 if (size == -1) {
82 System.out.println("getCommittedVirtualMemorySize() is not supported");
83 return;
84 }
85
86 if (trace) {
87 System.out.println("Committed virtual memory size in bytes: " +
88 size);
89 }
90
91 if (size < MIN_SIZE_FOR_PASS || size > max_size_for_pass) {
92 throw new RuntimeException("Committed virtual memory size " +
93 "illegal value: " + size + " bytes " +
94 "(MIN = " + MIN_SIZE_FOR_PASS + "; " +
95 "MAX = " + max_size_for_pass + ")");
96 }
97
98 System.out.println("Test passed.");
99 }
100 }
|
1 /*
2 * Copyright (c) 2003, 2019, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
40 * 2. Find your process, and look in the "SZ" column. Reported in Kbytes.
41 * Windows NT/XP/2000:
42 * 1. Hit Ctrl-Alt-Delete, select Task Manager, go to Processes tab.
43 * 2. Find your process and look in the "Mem Usage" column. Reported in
44 * Kbytes.
45 * Windows 98/ME:
46 * Not supported.
47 */
48
49 import com.sun.management.OperatingSystemMXBean;
50 import java.lang.management.*;
51
52 public class GetCommittedVirtualMemorySize {
53
54 private static OperatingSystemMXBean mbean =
55 (com.sun.management.OperatingSystemMXBean)
56 ManagementFactory.getOperatingSystemMXBean();
57
58 // Careful with these values.
59 private static final long MIN_SIZE_FOR_PASS = 1;
60 private static long MAX_SIZE_FOR_PASS = Long.MAX_VALUE;
61
62 private static boolean trace = false;
63
64 public static void main(String args[]) throws Exception {
65 if (args.length > 0 && args[0].equals("trace")) {
66 trace = true;
67 }
68
69 long size = mbean.getCommittedVirtualMemorySize();
70 if (size == -1) {
71 System.out.println("getCommittedVirtualMemorySize() is not supported");
72 return;
73 }
74
75 if (trace) {
76 System.out.println("Committed virtual memory size in bytes: " +
77 size);
78 }
79
80 if (size < MIN_SIZE_FOR_PASS || size > MAX_SIZE_FOR_PASS) {
81 throw new RuntimeException("Committed virtual memory size " +
82 "illegal value: " + size + " bytes " +
83 "(MIN = " + MIN_SIZE_FOR_PASS + "; " +
84 "MAX = " + MAX_SIZE_FOR_PASS + ")");
85 }
86
87 System.out.println("Test passed.");
88 }
89 }
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