1 /*
2 * Copyright (c) 2014, 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 */
23
24 /*
25 * @test
26 * @summary Test reserve/commit/uncommit/release of virtual memory and that we track it correctly
27 * @key nmt jcmd
28 * @library /testlibrary /../../test/lib
29 * @modules java.base/sun.misc
30 * java.management
31 * @build VirtualAllocCommitUncommitRecommit
32 * @run main ClassFileInstaller sun.hotspot.WhiteBox
33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail VirtualAllocCommitUncommitRecommit
34 *
35 */
36
37 import jdk.test.lib.*;
38
39 import sun.hotspot.WhiteBox;
40
41 public class VirtualAllocCommitUncommitRecommit {
42
43 public static WhiteBox wb = WhiteBox.getWhiteBox();
44
45 public static void main(String args[]) throws Exception {
46 OutputAnalyzer output;
47 long commitSize = 128 * 1024; // 128KB
48 long reserveSize = 4 * 1024 * 1024; // 4096KB
49 long addr;
50
51 String pid = Integer.toString(ProcessTools.getProcessId());
52 ProcessBuilder pb = new ProcessBuilder();
53
54 // reserve
55 addr = wb.NMTReserveMemory(reserveSize);
56 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid,
57 "VM.native_memory", "detail" });
58
59 output = new OutputAnalyzer(pb.start());
60 output.shouldContain("Test (reserved=4096KB, committed=0KB)");
61 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
62 + Long.toHexString(addr + reserveSize)
63 + "\\] reserved 4096KB for Test");
64
65 long addrA = addr;
66 long addrB = addr + commitSize;
67 long addrC = addr + (2 * commitSize);
68 long addrD = addr + (3 * commitSize);
69 long addrE = addr + (4 * commitSize);
70 long addrF = addr + (5 * commitSize);
71
72 // commit ABCD
73 wb.NMTCommitMemory(addrA, commitSize);
74 wb.NMTCommitMemory(addrB, commitSize);
75 wb.NMTCommitMemory(addrC, commitSize);
76 wb.NMTCommitMemory(addrD, commitSize);
77
78 output = new OutputAnalyzer(pb.start());
79 output.shouldContain("Test (reserved=4096KB, committed=512KB)");
80
81 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
82 + Long.toHexString(addr + reserveSize)
83 + "\\] reserved 4096KB for Test");
84 // uncommit BC
85 wb.NMTUncommitMemory(addrB, commitSize);
86 wb.NMTUncommitMemory(addrC, commitSize);
87
88 output = new OutputAnalyzer(pb.start());
89 output.shouldContain("Test (reserved=4096KB, committed=256KB)");
90
91 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
92 + Long.toHexString(addr + reserveSize)
93 + "\\] reserved 4096KB for Test");
94
95 // commit EF
96 wb.NMTCommitMemory(addrE, commitSize);
97 wb.NMTCommitMemory(addrF, commitSize);
98
99 output = new OutputAnalyzer(pb.start());
100 output.shouldContain("Test (reserved=4096KB, committed=512KB)");
101 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
102 + Long.toHexString(addr + reserveSize)
103 + "\\] reserved 4096KB for Test");
104
105 // uncommit A
106 wb.NMTUncommitMemory(addrA, commitSize);
107
108 output = new OutputAnalyzer(pb.start());
109 output.shouldContain("Test (reserved=4096KB, committed=384KB)");
110 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
111 + Long.toHexString(addr + reserveSize)
112 + "\\] reserved 4096KB for Test");
113
114 // commit ABC
115 wb.NMTCommitMemory(addrA, commitSize);
116 wb.NMTCommitMemory(addrB, commitSize);
117 wb.NMTCommitMemory(addrC, commitSize);
118
119 output = new OutputAnalyzer(pb.start());
120 output.shouldContain("Test (reserved=4096KB, committed=768KB)");
121 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
122 + Long.toHexString(addr + reserveSize)
123 + "\\] reserved 4096KB for Test");
124
125 // uncommit ABCDEF
126 wb.NMTUncommitMemory(addrA, commitSize);
127 wb.NMTUncommitMemory(addrB, commitSize);
128 wb.NMTUncommitMemory(addrC, commitSize);
129 wb.NMTUncommitMemory(addrD, commitSize);
130 wb.NMTUncommitMemory(addrE, commitSize);
131 wb.NMTUncommitMemory(addrF, commitSize);
132
133 output = new OutputAnalyzer(pb.start());
134 output.shouldContain("Test (reserved=4096KB, committed=0KB)");
135 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
136 + Long.toHexString(addr + reserveSize)
137 + "\\] reserved 4096KB for Test");
138
139 // release
140 wb.NMTReleaseMemory(addr, reserveSize);
141 output = new OutputAnalyzer(pb.start());
142 output.shouldNotContain("Test (reserved=");
143 output.shouldNotMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
144 + Long.toHexString(addr + reserveSize) + "\\] reserved 4096KB for Test");
145 }
146 }