332 lines
12 KiB
Java
332 lines
12 KiB
Java
/*
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* Copyright (c) 2018, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @summary Test merging of committed virtual memory and that we track it correctly
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* @comment needs to be executed with -Xint (or, alternatively, -Xcomp -Xbatch) since it relies on comparing
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* NMT call stacks, and we must make sure that all functions on the stack that NMT sees are either compiled
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* from the get-go or stay always interpreted.
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* java.management
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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run main/othervm -Xbootclasspath/a:. -Xint -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail VirtualAllocCommitMerge
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*
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*/
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.Platform;
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import jdk.test.whitebox.WhiteBox;
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public class VirtualAllocCommitMerge {
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public static WhiteBox wb = WhiteBox.getWhiteBox();
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public static void main(String args[]) throws Exception {
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OutputAnalyzer output;
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long commitSize = 128 * 1024; // 128KB
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long reserveSize = 4 * 1024 * 1024; // 4096KB
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long addr;
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// reserve
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addr = wb.NMTReserveMemory(reserveSize);
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output = NMTTestUtils.startJcmdVMNativeMemory("detail");
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checkReservedCommittedSummary(output, 4096, 0);
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checkReserved(output, addr, reserveSize, "4096KB");
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long addrA = addr + (0 * commitSize);
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long addrB = addr + (1 * commitSize);
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long addrC = addr + (2 * commitSize);
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long addrD = addr + (3 * commitSize);
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long addrE = addr + (4 * commitSize);
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{
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// commit overlapping ABC, A, B, C
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wb.NMTCommitMemory(addrA, 3 * commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 384);
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checkReserved(output, addr, reserveSize, "4096KB");
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checkCommitted(output, addrA, 3 * commitSize, "384KB");
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wb.NMTCommitMemory(addrA, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 384);
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checkReserved(output, addr, reserveSize, "4096KB");
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checkCommitted(output, addrA, 3 * commitSize, "384KB");
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wb.NMTCommitMemory(addrB, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 384);
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checkReserved(output, addr, reserveSize, "4096KB");
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checkCommitted(output, addrA, 3 * commitSize, "384KB");
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wb.NMTCommitMemory(addrC, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 384);
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checkReserved(output, addr, reserveSize, "4096KB");
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checkCommitted(output, addrA, 3 * commitSize, "384KB");
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// uncommit
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wb.NMTUncommitMemory(addrA, 3 * commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 0);
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}
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// Test discontigous areas
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{
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// commit ACE
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wb.NMTCommitMemory(addrA, commitSize);
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wb.NMTCommitMemory(addrC, commitSize);
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wb.NMTCommitMemory(addrE, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 384);
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checkReserved(output, addr, reserveSize, "4096KB");
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checkCommitted(output, addrA, commitSize, "128KB");
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checkCommitted(output, addrC, commitSize, "128KB");
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checkCommitted(output, addrE, commitSize, "128KB");
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// uncommit ACE
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wb.NMTUncommitMemory(addrA, commitSize);
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wb.NMTUncommitMemory(addrC, commitSize);
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wb.NMTUncommitMemory(addrE, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 0);
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}
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// Test contiguous areas
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{
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// commit AB
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wb.NMTCommitMemory(addrA, commitSize);
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wb.NMTCommitMemory(addrB, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 256);
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checkReserved(output, addr, reserveSize, "4096KB");
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checkCommitted(output, addrA, 2 * commitSize, "256KB");
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// uncommit AB
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wb.NMTUncommitMemory(addrA, commitSize);
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wb.NMTUncommitMemory(addrB, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 0);
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}
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{
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// commit BA
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wb.NMTCommitMemory(addrB, commitSize);
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wb.NMTCommitMemory(addrA, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 256);
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checkReserved(output, addr, reserveSize, "4096KB");
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checkCommitted(output, addrA, 2 * commitSize, "256KB");
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// uncommit AB
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wb.NMTUncommitMemory(addrB, commitSize);
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wb.NMTUncommitMemory(addrA, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 0);
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}
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{
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// commit ABC
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wb.NMTCommitMemory(addrA, commitSize);
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wb.NMTCommitMemory(addrB, commitSize);
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wb.NMTCommitMemory(addrC, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 384);
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checkReserved(output, addr, reserveSize, "4096KB");
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checkCommitted(output, addrA, 3 * commitSize, "384KB");
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// uncommit
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wb.NMTUncommitMemory(addrA, commitSize);
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wb.NMTUncommitMemory(addrB, commitSize);
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wb.NMTUncommitMemory(addrC, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 0);
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}
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{
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// commit ACB
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wb.NMTCommitMemory(addrA, commitSize);
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wb.NMTCommitMemory(addrC, commitSize);
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wb.NMTCommitMemory(addrB, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 384);
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checkReserved(output, addr, reserveSize, "4096KB");
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checkCommitted(output, addrA, 3 * commitSize, "384KB");
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// uncommit
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wb.NMTUncommitMemory(addrA, commitSize);
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wb.NMTUncommitMemory(addrC, commitSize);
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wb.NMTUncommitMemory(addrB, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 0);
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}
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{
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// commit BAC
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wb.NMTCommitMemory(addrB, commitSize);
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wb.NMTCommitMemory(addrA, commitSize);
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wb.NMTCommitMemory(addrC, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 384);
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checkReserved(output, addr, reserveSize, "4096KB");
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checkCommitted(output, addrA, 3 * commitSize, "384KB");
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// uncommit
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wb.NMTUncommitMemory(addrB, commitSize);
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wb.NMTUncommitMemory(addrA, commitSize);
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wb.NMTUncommitMemory(addrC, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 0);
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}
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{
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// commit BCA
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wb.NMTCommitMemory(addrB, commitSize);
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wb.NMTCommitMemory(addrC, commitSize);
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wb.NMTCommitMemory(addrA, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 384);
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checkReserved(output, addr, reserveSize, "4096KB");
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checkCommitted(output, addrA, 3 * commitSize, "384KB");
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// uncommit
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wb.NMTUncommitMemory(addrB, commitSize);
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wb.NMTUncommitMemory(addrC, commitSize);
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wb.NMTUncommitMemory(addrA, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 0);
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}
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{
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// commit CAB
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wb.NMTCommitMemory(addrC, commitSize);
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wb.NMTCommitMemory(addrA, commitSize);
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wb.NMTCommitMemory(addrB, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 384);
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checkReserved(output, addr, reserveSize, "4096KB");
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checkCommitted(output, addrA, 3 * commitSize, "384KB");
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// uncommit
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wb.NMTUncommitMemory(addrC, commitSize);
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wb.NMTUncommitMemory(addrA, commitSize);
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wb.NMTUncommitMemory(addrB, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 0);
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}
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{
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// commit CBA
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wb.NMTCommitMemory(addrC, commitSize);
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wb.NMTCommitMemory(addrB, commitSize);
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wb.NMTCommitMemory(addrA, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 384);
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checkReserved(output, addr, reserveSize, "4096KB");
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checkCommitted(output, addrA, 3 * commitSize, "384KB");
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// uncommit
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wb.NMTUncommitMemory(addrC, commitSize);
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wb.NMTUncommitMemory(addrB, commitSize);
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wb.NMTUncommitMemory(addrA, commitSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 4096, 0);
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}
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// release
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wb.NMTReleaseMemory(addr, reserveSize);
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output = NMTTestUtils.startJcmdVMNativeMemoryDetail();
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checkReservedCommittedSummary(output, 0, 0);
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output.shouldNotMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
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+ Long.toHexString(addr + reserveSize) + "\\] reserved 4096KB for Test");
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}
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// running peak counter
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static long peakKB = 0;
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public static void checkReservedCommittedSummary(OutputAnalyzer output, long reservedKB, long committedKB) {
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if (committedKB > peakKB) {
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peakKB = committedKB;
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}
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NMTTestUtils.checkReservedCommittedSummary(output, reservedKB, committedKB, peakKB);
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}
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public static void checkReserved(OutputAnalyzer output, long addr, long size, String sizeString) {
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output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
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+ Long.toHexString(addr + size)
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+ "\\] reserved 4096KB for Test");
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}
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public static void checkCommitted(OutputAnalyzer output, long addr, long size, String sizeString) {
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// On ARM Thumb the stack is not walkable, so the location is not available and
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// "from" string will not be present in the output.
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// Disable assertion for ARM32.
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String fromString = Platform.isARM() ? "" : "from.*";
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output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
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+ Long.toHexString(addr + size)
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+ "\\] committed " + sizeString + " " + fromString);
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}
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}
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