1 /*
2 * Copyright (c) 2014, 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 /testlibrary/whitebox
29 * @ignore
30 * @build VirtualAllocCommitUncommitRecommit
31 * @run main ClassFileInstaller sun.hotspot.WhiteBox
32 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail VirtualAllocCommitUncommitRecommit
33 *
34 */
35
36 import com.oracle.java.testlibrary.*;
37
38 import sun.hotspot.WhiteBox;
39
40 public class VirtualAllocCommitUncommitRecommit {
41
42 public static WhiteBox wb = WhiteBox.getWhiteBox();
43
44 public static void main(String args[]) throws Exception {
45 OutputAnalyzer output;
46 long commitSize = 4 * 1024; // 4KB
47 long reserveSize = 1024 * 1024; // 1024KB
48 long addr;
49
50 String pid = Integer.toString(ProcessTools.getProcessId());
51 ProcessBuilder pb = new ProcessBuilder();
52
53 boolean has_nmt_detail = wb.NMTIsDetailSupported();
54 if (has_nmt_detail) {
55 System.out.println("NMT detail support detected.");
56 } else {
57 System.out.println("NMT detail support not detected.");
58 }
59
60 // reserve
61 addr = wb.NMTReserveMemory(reserveSize);
62 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid,
63 "VM.native_memory", "detail" });
64
65 output = new OutputAnalyzer(pb.start());
66 output.shouldContain("Test (reserved=1024KB, committed=0KB)");
67 if (has_nmt_detail) {
68 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
69 + Long.toHexString(addr + reserveSize)
70 + "\\] reserved 1024KB for Test");
71 }
72
73 long addrA = addr;
74 long addrB = addr + commitSize;
75 long addrC = addr + (2 * commitSize);
76 long addrD = addr + (3 * commitSize);
77 long addrE = addr + (4 * commitSize);
78 long addrF = addr + (5 * commitSize);
79
80 // commit ABCD
81 wb.NMTCommitMemory(addrA, commitSize);
82 wb.NMTCommitMemory(addrB, commitSize);
83 wb.NMTCommitMemory(addrC, commitSize);
84 wb.NMTCommitMemory(addrD, commitSize);
85
86 output = new OutputAnalyzer(pb.start());
87 output.shouldContain("Test (reserved=1024KB, committed=16KB)");
88
89 if (has_nmt_detail) {
90 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
91 + Long.toHexString(addr + reserveSize)
92 + "\\] reserved 1024KB for Test");
93 }
94 // uncommit BC
95 wb.NMTUncommitMemory(addrB, commitSize);
96 wb.NMTUncommitMemory(addrC, commitSize);
97
98 output = new OutputAnalyzer(pb.start());
99 output.shouldContain("Test (reserved=1024KB, committed=8KB)");
100
101 if (has_nmt_detail) {
102 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
103 + Long.toHexString(addr + reserveSize)
104 + "\\] reserved 1024KB for Test");
105 }
106
107 // commit EF
108 wb.NMTCommitMemory(addrE, commitSize);
109 wb.NMTCommitMemory(addrF, commitSize);
110
111 output = new OutputAnalyzer(pb.start());
112 output.shouldContain("Test (reserved=1024KB, committed=16KB)");
113 if (has_nmt_detail) {
114 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
115 + Long.toHexString(addr + reserveSize)
116 + "\\] reserved 1024KB for Test");
117 }
118
119 // uncommit A
120 wb.NMTUncommitMemory(addrA, commitSize);
121
122 output = new OutputAnalyzer(pb.start());
123 output.shouldContain("Test (reserved=1024KB, committed=12KB)");
124 if (has_nmt_detail) {
125 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
126 + Long.toHexString(addr + reserveSize)
127 + "\\] reserved 1024KB for Test");
128 }
129
130 // commit ABC
131 wb.NMTCommitMemory(addrA, commitSize);
132 wb.NMTCommitMemory(addrB, commitSize);
133 wb.NMTCommitMemory(addrC, commitSize);
134
135 output = new OutputAnalyzer(pb.start());
136 output.shouldContain("Test (reserved=1024KB, committed=24KB)");
137 if (has_nmt_detail) {
138 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
139 + Long.toHexString(addr + reserveSize)
140 + "\\] reserved 1024KB for Test");
141 }
142
143 // uncommit ABCDEF
144 wb.NMTUncommitMemory(addrA, commitSize);
145 wb.NMTUncommitMemory(addrB, commitSize);
146 wb.NMTUncommitMemory(addrC, commitSize);
147 wb.NMTUncommitMemory(addrD, commitSize);
148 wb.NMTUncommitMemory(addrE, commitSize);
149 wb.NMTUncommitMemory(addrF, commitSize);
150
151 output = new OutputAnalyzer(pb.start());
152 output.shouldContain("Test (reserved=1024KB, committed=0KB)");
153 if (has_nmt_detail) {
154 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
155 + Long.toHexString(addr + reserveSize)
156 + "\\] reserved 1024KB for Test");
157 }
158
159 // release
160 wb.NMTReleaseMemory(addr, reserveSize);
161 output = new OutputAnalyzer(pb.start());
162 output.shouldNotContain("Test (reserved=");
163 output.shouldNotMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
164 + Long.toHexString(addr + reserveSize) + "\\] reserved");
165 }
166 }