1 /*
2 * Copyright (c) 2018, 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 merging of committed virtual memory and that we track it correctly
27 * @key nmt jcmd
28 * @library /test/lib
29 * @modules java.base/jdk.internal.misc
30 * java.management
31 * @build sun.hotspot.WhiteBox
32 * @run main ClassFileInstaller sun.hotspot.WhiteBox
33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail VirtualAllocCommitMerge
34 *
35 */
36
37 import jdk.test.lib.process.ProcessTools;
38 import jdk.test.lib.process.OutputAnalyzer;
39 import jdk.test.lib.JDKToolFinder;
40
41 import sun.hotspot.WhiteBox;
42
43 public class VirtualAllocCommitMerge {
44
45 public static WhiteBox wb = WhiteBox.getWhiteBox();
46
47 public static void main(String args[]) throws Exception {
48 OutputAnalyzer output;
49 long commitSize = 128 * 1024; // 128KB
50 long reserveSize = 4 * 1024 * 1024; // 4096KB
51 long addr;
52
53 String pid = Long.toString(ProcessTools.getProcessId());
54 ProcessBuilder pb = new ProcessBuilder();
55
56 // reserve
57 addr = wb.NMTReserveMemory(reserveSize);
58 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid,
59 "VM.native_memory", "detail" });
60
61 output = new OutputAnalyzer(pb.start());
62 checkReservedCommittedSummary(output, "4096KB", "0KB");
63 checkReserved(output, addr, reserveSize, "4096KB");
64
65 long addrA = addr + (0 * commitSize);
66 long addrB = addr + (1 * commitSize);
67 long addrC = addr + (2 * commitSize);
68 long addrD = addr + (3 * commitSize);
69 long addrE = addr + (4 * commitSize);
70
71 {
72 // commit overlapping ABC, A, B, C
73 wb.NMTCommitMemory(addrA, 3 * commitSize);
74
75 output = new OutputAnalyzer(pb.start());
76 checkReservedCommittedSummary(output, "4096KB", "384KB");
77 checkReserved(output, addr, reserveSize, "4096KB");
78
79 checkCommitted(output, addrA, 3 * commitSize, "384KB");
80
81
82 wb.NMTCommitMemory(addrA, commitSize);
83
84 output = new OutputAnalyzer(pb.start());
85 checkReservedCommittedSummary(output, "4096KB", "384KB");
86 checkReserved(output, addr, reserveSize, "4096KB");
87
88 checkCommitted(output, addrA, 3 * commitSize, "384KB");
89
90
91 wb.NMTCommitMemory(addrB, commitSize);
92
93 output = new OutputAnalyzer(pb.start());
94 checkReservedCommittedSummary(output, "4096KB", "384KB");
95 checkReserved(output, addr, reserveSize, "4096KB");
96
97 checkCommitted(output, addrA, 3 * commitSize, "384KB");
98
99 wb.NMTCommitMemory(addrC, commitSize);
100
101 output = new OutputAnalyzer(pb.start());
102 checkReservedCommittedSummary(output, "4096KB", "384KB");
103 checkReserved(output, addr, reserveSize, "4096KB");
104
105 checkCommitted(output, addrA, 3 * commitSize, "384KB");
106
107 // uncommit
108 wb.NMTUncommitMemory(addrA, 3 * commitSize);
109
110 output = new OutputAnalyzer(pb.start());
111 checkReservedCommittedSummary(output, "4096KB", "0KB");
112 }
113
114 // Test discontigous areas
115 {
116 // commit ACE
117 wb.NMTCommitMemory(addrA, commitSize);
118 wb.NMTCommitMemory(addrC, commitSize);
119 wb.NMTCommitMemory(addrE, commitSize);
120
121 output = new OutputAnalyzer(pb.start());
122 checkReservedCommittedSummary(output, "4096KB", "384KB");
123 checkReserved(output, addr, reserveSize, "4096KB");
124
125 checkCommitted(output, addrA, commitSize, "128KB");
126 checkCommitted(output, addrC, commitSize, "128KB");
127 checkCommitted(output, addrE, commitSize, "128KB");
128
129 // uncommit ACE
130 wb.NMTUncommitMemory(addrA, commitSize);
131 wb.NMTUncommitMemory(addrC, commitSize);
132 wb.NMTUncommitMemory(addrE, commitSize);
133
134 output = new OutputAnalyzer(pb.start());
135 checkReservedCommittedSummary(output, "4096KB", "0KB");
136 }
137
138 // Test contiguous areas
139 {
140 // commit AB
141 wb.NMTCommitMemory(addrA, commitSize);
142 wb.NMTCommitMemory(addrB, commitSize);
143
144 output = new OutputAnalyzer(pb.start());
145 checkReservedCommittedSummary(output, "4096KB", "256KB");
146 checkReserved(output, addr, reserveSize, "4096KB");
147
148 checkCommitted(output, addrA, 2 * commitSize, "256KB");
149
150 // uncommit AB
151 wb.NMTUncommitMemory(addrA, commitSize);
152 wb.NMTUncommitMemory(addrB, commitSize);
153
154 output = new OutputAnalyzer(pb.start());
155 checkReservedCommittedSummary(output, "4096KB", "0KB");
156 }
157
158 {
159 // commit BA
160 wb.NMTCommitMemory(addrB, commitSize);
161 wb.NMTCommitMemory(addrA, commitSize);
162
163 output = new OutputAnalyzer(pb.start());
164 checkReservedCommittedSummary(output, "4096KB", "256KB");
165 checkReserved(output, addr, reserveSize, "4096KB");
166
167 checkCommitted(output, addrA, 2 * commitSize, "256KB");
168
169 // uncommit AB
170 wb.NMTUncommitMemory(addrB, commitSize);
171 wb.NMTUncommitMemory(addrA, commitSize);
172
173 output = new OutputAnalyzer(pb.start());
174 checkReservedCommittedSummary(output, "4096KB", "0KB");
175 }
176
177 {
178 // commit ABC
179 wb.NMTCommitMemory(addrA, commitSize);
180 wb.NMTCommitMemory(addrB, commitSize);
181 wb.NMTCommitMemory(addrC, commitSize);
182
183 output = new OutputAnalyzer(pb.start());
184 checkReservedCommittedSummary(output, "4096KB", "384KB");
185 checkReserved(output, addr, reserveSize, "4096KB");
186
187 checkCommitted(output, addrA, 3 * commitSize, "384KB");
188
189 // uncommit
190 wb.NMTUncommitMemory(addrA, commitSize);
191 wb.NMTUncommitMemory(addrB, commitSize);
192 wb.NMTUncommitMemory(addrC, commitSize);
193
194 output = new OutputAnalyzer(pb.start());
195 checkReservedCommittedSummary(output, "4096KB", "0KB");
196 }
197
198 {
199 // commit ACB
200 wb.NMTCommitMemory(addrA, commitSize);
201 wb.NMTCommitMemory(addrC, commitSize);
202 wb.NMTCommitMemory(addrB, commitSize);
203
204 output = new OutputAnalyzer(pb.start());
205 checkReservedCommittedSummary(output, "4096KB", "384KB");
206 checkReserved(output, addr, reserveSize, "4096KB");
207
208 checkCommitted(output, addrA, 3 * commitSize, "384KB");
209
210 // uncommit
211 wb.NMTUncommitMemory(addrA, commitSize);
212 wb.NMTUncommitMemory(addrC, commitSize);
213 wb.NMTUncommitMemory(addrB, commitSize);
214
215 output = new OutputAnalyzer(pb.start());
216 checkReservedCommittedSummary(output, "4096KB", "0KB");
217 }
218
219 {
220 // commit BAC
221 wb.NMTCommitMemory(addrB, commitSize);
222 wb.NMTCommitMemory(addrA, commitSize);
223 wb.NMTCommitMemory(addrC, commitSize);
224
225 output = new OutputAnalyzer(pb.start());
226 checkReservedCommittedSummary(output, "4096KB", "384KB");
227 checkReserved(output, addr, reserveSize, "4096KB");
228
229 checkCommitted(output, addrA, 3 * commitSize, "384KB");
230
231 // uncommit
232 wb.NMTUncommitMemory(addrB, commitSize);
233 wb.NMTUncommitMemory(addrA, commitSize);
234 wb.NMTUncommitMemory(addrC, commitSize);
235
236 output = new OutputAnalyzer(pb.start());
237 checkReservedCommittedSummary(output, "4096KB", "0KB");
238 }
239
240 {
241 // commit BCA
242 wb.NMTCommitMemory(addrB, commitSize);
243 wb.NMTCommitMemory(addrC, commitSize);
244 wb.NMTCommitMemory(addrA, commitSize);
245
246 output = new OutputAnalyzer(pb.start());
247 checkReservedCommittedSummary(output, "4096KB", "384KB");
248 checkReserved(output, addr, reserveSize, "4096KB");
249
250 checkCommitted(output, addrA, 3 * commitSize, "384KB");
251
252 // uncommit
253 wb.NMTUncommitMemory(addrB, commitSize);
254 wb.NMTUncommitMemory(addrC, commitSize);
255 wb.NMTUncommitMemory(addrA, commitSize);
256
257 output = new OutputAnalyzer(pb.start());
258 checkReservedCommittedSummary(output, "4096KB", "0KB");
259 }
260
261 {
262 // commit CAB
263 wb.NMTCommitMemory(addrC, commitSize);
264 wb.NMTCommitMemory(addrA, commitSize);
265 wb.NMTCommitMemory(addrB, commitSize);
266
267 output = new OutputAnalyzer(pb.start());
268 checkReservedCommittedSummary(output, "4096KB", "384KB");
269 checkReserved(output, addr, reserveSize, "4096KB");
270
271 checkCommitted(output, addrA, 3 * commitSize, "384KB");
272
273 // uncommit
274 wb.NMTUncommitMemory(addrC, commitSize);
275 wb.NMTUncommitMemory(addrA, commitSize);
276 wb.NMTUncommitMemory(addrB, commitSize);
277
278 output = new OutputAnalyzer(pb.start());
279 checkReservedCommittedSummary(output, "4096KB", "0KB");
280 }
281
282 {
283 // commit CBA
284 wb.NMTCommitMemory(addrC, commitSize);
285 wb.NMTCommitMemory(addrB, commitSize);
286 wb.NMTCommitMemory(addrA, commitSize);
287
288 output = new OutputAnalyzer(pb.start());
289 checkReservedCommittedSummary(output, "4096KB", "384KB");
290 checkReserved(output, addr, reserveSize, "4096KB");
291
292 checkCommitted(output, addrA, 3 * commitSize, "384KB");
293
294 // uncommit
295 wb.NMTUncommitMemory(addrC, commitSize);
296 wb.NMTUncommitMemory(addrB, commitSize);
297 wb.NMTUncommitMemory(addrA, commitSize);
298
299 output = new OutputAnalyzer(pb.start());
300 checkReservedCommittedSummary(output, "4096KB", "0KB");
301 }
302
303 // release
304 wb.NMTReleaseMemory(addr, reserveSize);
305 output = new OutputAnalyzer(pb.start());
306 output.shouldNotContain("Test (reserved=");
307 output.shouldNotMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
308 + Long.toHexString(addr + reserveSize) + "\\] reserved 4096KB for Test");
309 }
310
311 public static void checkReservedCommittedSummary(OutputAnalyzer output, String reservedString, String committedString) {
312 output.shouldContain("Test (reserved=" + reservedString + ", committed=" + committedString + ")");
313 }
314
315 public static void checkReserved(OutputAnalyzer output, long addr, long size, String sizeString) {
316 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
317 + Long.toHexString(addr + size)
318 + "\\] reserved 4096KB for Test");
319 }
320
321 public static void checkCommitted(OutputAnalyzer output, long addr, long size, String sizeString) {
322 output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
323 + Long.toHexString(addr + size)
324 + "\\] committed " + sizeString + " from.*");
325 }
326 }