Mercurial > hg > truffle
annotate test/runtime/NMT/MallocTestType.java @ 12986:1b422ef5288a
8025728: Missing volatile specifier for field G1AllocRegion::_alloc_region
Summary: The field G1AllocRegion::_alloc_region needs to be declared volatile as it is used with that intention. Otherwise the compiler may generate the code that reloads the value which might have changed in the meantime, leading to spurious crashes.
Reviewed-by: iveresov, simonis, tschatzl
Contributed-by: Axel Siebenborn <axel.siebenborn@sap.com>
| author | tschatzl |
|---|---|
| date | Wed, 23 Oct 2013 10:23:06 +0200 |
| parents | 3b890cd4da64 |
| children | ac12996df59b |
| rev | line source |
|---|---|
| 7977 | 1 /* |
| 2 * Copyright (c) 2013, 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 consistency of NMT by leaking a few select allocations of the Test type and then verify visibility with jcmd | |
| 27 * @key nmt jcmd | |
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28 * @library /testlibrary /testlibrary/whitebox |
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29 * @build MallocTestType |
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30 * @run main ClassFileInstaller sun.hotspot.WhiteBox |
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31 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail MallocTestType |
| 7977 | 32 */ |
| 33 | |
| 34 import com.oracle.java.testlibrary.*; | |
| 35 import sun.hotspot.WhiteBox; | |
| 36 | |
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37 public class MallocTestType { |
| 7977 | 38 |
| 39 public static void main(String args[]) throws Exception { | |
| 40 OutputAnalyzer output; | |
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41 WhiteBox wb = WhiteBox.getWhiteBox(); |
| 7977 | 42 |
| 43 // Grab my own PID | |
| 44 String pid = Integer.toString(ProcessTools.getProcessId()); | |
| 45 ProcessBuilder pb = new ProcessBuilder(); | |
| 46 | |
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47 // Use WB API to alloc and free with the mtTest type |
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48 long memAlloc3 = wb.NMTMalloc(128 * 1024); |
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49 long memAlloc2 = wb.NMTMalloc(256 * 1024); |
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50 wb.NMTFree(memAlloc3); |
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51 long memAlloc1 = wb.NMTMalloc(512 * 1024); |
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52 wb.NMTFree(memAlloc2); |
| 7977 | 53 |
| 54 // Use WB API to ensure that all data has been merged before we continue | |
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55 if (!wb.NMTWaitForDataMerge()) { |
| 7977 | 56 throw new Exception("Call to WB API NMTWaitForDataMerge() failed"); |
| 57 } | |
| 58 | |
| 59 // Run 'jcmd <pid> VM.native_memory summary' | |
| 60 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary"}); | |
| 61 output = new OutputAnalyzer(pb.start()); | |
| 62 output.shouldContain("Test (reserved=512KB, committed=512KB)"); | |
| 63 | |
| 64 // Free the memory allocated by NMTAllocTest | |
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65 wb.NMTFree(memAlloc1); |
| 7977 | 66 |
| 67 // Use WB API to ensure that all data has been merged before we continue | |
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68 if (!wb.NMTWaitForDataMerge()) { |
| 7977 | 69 throw new Exception("Call to WB API NMTWaitForDataMerge() failed"); |
| 70 } | |
| 71 output = new OutputAnalyzer(pb.start()); | |
| 72 output.shouldNotContain("Test (reserved="); | |
| 73 } | |
| 74 } |