--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/NMT/VirtualAllocCommitMerge.java Wed Feb 21 12:40:05 2018 +0100
@@ -0,0 +1,326 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @summary Test merging of committed virtual memory and that we track it correctly
+ * @key nmt jcmd
+ * @library /test/lib
+ * @modules java.base/jdk.internal.misc
+ * java.management
+ * @build sun.hotspot.WhiteBox
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail VirtualAllocCommitMerge
+ *
+ */
+
+import jdk.test.lib.process.ProcessTools;
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.JDKToolFinder;
+
+import sun.hotspot.WhiteBox;
+
+public class VirtualAllocCommitMerge {
+
+ public static WhiteBox wb = WhiteBox.getWhiteBox();
+
+ public static void main(String args[]) throws Exception {
+ OutputAnalyzer output;
+ long commitSize = 128 * 1024; // 128KB
+ long reserveSize = 4 * 1024 * 1024; // 4096KB
+ long addr;
+
+ String pid = Long.toString(ProcessTools.getProcessId());
+ ProcessBuilder pb = new ProcessBuilder();
+
+ // reserve
+ addr = wb.NMTReserveMemory(reserveSize);
+ pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid,
+ "VM.native_memory", "detail" });
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "0KB");
+ checkReserved(output, addr, reserveSize, "4096KB");
+
+ long addrA = addr + (0 * commitSize);
+ long addrB = addr + (1 * commitSize);
+ long addrC = addr + (2 * commitSize);
+ long addrD = addr + (3 * commitSize);
+ long addrE = addr + (4 * commitSize);
+
+ {
+ // commit overlapping ABC, A, B, C
+ wb.NMTCommitMemory(addrA, 3 * commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "384KB");
+ checkReserved(output, addr, reserveSize, "4096KB");
+
+ checkCommitted(output, addrA, 3 * commitSize, "384KB");
+
+
+ wb.NMTCommitMemory(addrA, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "384KB");
+ checkReserved(output, addr, reserveSize, "4096KB");
+
+ checkCommitted(output, addrA, 3 * commitSize, "384KB");
+
+
+ wb.NMTCommitMemory(addrB, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "384KB");
+ checkReserved(output, addr, reserveSize, "4096KB");
+
+ checkCommitted(output, addrA, 3 * commitSize, "384KB");
+
+ wb.NMTCommitMemory(addrC, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "384KB");
+ checkReserved(output, addr, reserveSize, "4096KB");
+
+ checkCommitted(output, addrA, 3 * commitSize, "384KB");
+
+ // uncommit
+ wb.NMTUncommitMemory(addrA, 3 * commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "0KB");
+ }
+
+ // Test discontigous areas
+ {
+ // commit ACE
+ wb.NMTCommitMemory(addrA, commitSize);
+ wb.NMTCommitMemory(addrC, commitSize);
+ wb.NMTCommitMemory(addrE, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "384KB");
+ checkReserved(output, addr, reserveSize, "4096KB");
+
+ checkCommitted(output, addrA, commitSize, "128KB");
+ checkCommitted(output, addrC, commitSize, "128KB");
+ checkCommitted(output, addrE, commitSize, "128KB");
+
+ // uncommit ACE
+ wb.NMTUncommitMemory(addrA, commitSize);
+ wb.NMTUncommitMemory(addrC, commitSize);
+ wb.NMTUncommitMemory(addrE, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "0KB");
+ }
+
+ // Test contiguous areas
+ {
+ // commit AB
+ wb.NMTCommitMemory(addrA, commitSize);
+ wb.NMTCommitMemory(addrB, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "256KB");
+ checkReserved(output, addr, reserveSize, "4096KB");
+
+ checkCommitted(output, addrA, 2 * commitSize, "256KB");
+
+ // uncommit AB
+ wb.NMTUncommitMemory(addrA, commitSize);
+ wb.NMTUncommitMemory(addrB, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "0KB");
+ }
+
+ {
+ // commit BA
+ wb.NMTCommitMemory(addrB, commitSize);
+ wb.NMTCommitMemory(addrA, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "256KB");
+ checkReserved(output, addr, reserveSize, "4096KB");
+
+ checkCommitted(output, addrA, 2 * commitSize, "256KB");
+
+ // uncommit AB
+ wb.NMTUncommitMemory(addrB, commitSize);
+ wb.NMTUncommitMemory(addrA, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "0KB");
+ }
+
+ {
+ // commit ABC
+ wb.NMTCommitMemory(addrA, commitSize);
+ wb.NMTCommitMemory(addrB, commitSize);
+ wb.NMTCommitMemory(addrC, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "384KB");
+ checkReserved(output, addr, reserveSize, "4096KB");
+
+ checkCommitted(output, addrA, 3 * commitSize, "384KB");
+
+ // uncommit
+ wb.NMTUncommitMemory(addrA, commitSize);
+ wb.NMTUncommitMemory(addrB, commitSize);
+ wb.NMTUncommitMemory(addrC, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "0KB");
+ }
+
+ {
+ // commit ACB
+ wb.NMTCommitMemory(addrA, commitSize);
+ wb.NMTCommitMemory(addrC, commitSize);
+ wb.NMTCommitMemory(addrB, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "384KB");
+ checkReserved(output, addr, reserveSize, "4096KB");
+
+ checkCommitted(output, addrA, 3 * commitSize, "384KB");
+
+ // uncommit
+ wb.NMTUncommitMemory(addrA, commitSize);
+ wb.NMTUncommitMemory(addrC, commitSize);
+ wb.NMTUncommitMemory(addrB, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "0KB");
+ }
+
+ {
+ // commit BAC
+ wb.NMTCommitMemory(addrB, commitSize);
+ wb.NMTCommitMemory(addrA, commitSize);
+ wb.NMTCommitMemory(addrC, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "384KB");
+ checkReserved(output, addr, reserveSize, "4096KB");
+
+ checkCommitted(output, addrA, 3 * commitSize, "384KB");
+
+ // uncommit
+ wb.NMTUncommitMemory(addrB, commitSize);
+ wb.NMTUncommitMemory(addrA, commitSize);
+ wb.NMTUncommitMemory(addrC, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "0KB");
+ }
+
+ {
+ // commit BCA
+ wb.NMTCommitMemory(addrB, commitSize);
+ wb.NMTCommitMemory(addrC, commitSize);
+ wb.NMTCommitMemory(addrA, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "384KB");
+ checkReserved(output, addr, reserveSize, "4096KB");
+
+ checkCommitted(output, addrA, 3 * commitSize, "384KB");
+
+ // uncommit
+ wb.NMTUncommitMemory(addrB, commitSize);
+ wb.NMTUncommitMemory(addrC, commitSize);
+ wb.NMTUncommitMemory(addrA, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "0KB");
+ }
+
+ {
+ // commit CAB
+ wb.NMTCommitMemory(addrC, commitSize);
+ wb.NMTCommitMemory(addrA, commitSize);
+ wb.NMTCommitMemory(addrB, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "384KB");
+ checkReserved(output, addr, reserveSize, "4096KB");
+
+ checkCommitted(output, addrA, 3 * commitSize, "384KB");
+
+ // uncommit
+ wb.NMTUncommitMemory(addrC, commitSize);
+ wb.NMTUncommitMemory(addrA, commitSize);
+ wb.NMTUncommitMemory(addrB, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "0KB");
+ }
+
+ {
+ // commit CBA
+ wb.NMTCommitMemory(addrC, commitSize);
+ wb.NMTCommitMemory(addrB, commitSize);
+ wb.NMTCommitMemory(addrA, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "384KB");
+ checkReserved(output, addr, reserveSize, "4096KB");
+
+ checkCommitted(output, addrA, 3 * commitSize, "384KB");
+
+ // uncommit
+ wb.NMTUncommitMemory(addrC, commitSize);
+ wb.NMTUncommitMemory(addrB, commitSize);
+ wb.NMTUncommitMemory(addrA, commitSize);
+
+ output = new OutputAnalyzer(pb.start());
+ checkReservedCommittedSummary(output, "4096KB", "0KB");
+ }
+
+ // release
+ wb.NMTReleaseMemory(addr, reserveSize);
+ output = new OutputAnalyzer(pb.start());
+ output.shouldNotContain("Test (reserved=");
+ output.shouldNotMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
+ + Long.toHexString(addr + reserveSize) + "\\] reserved 4096KB for Test");
+ }
+
+ public static void checkReservedCommittedSummary(OutputAnalyzer output, String reservedString, String committedString) {
+ output.shouldContain("Test (reserved=" + reservedString + ", committed=" + committedString + ")");
+ }
+
+ public static void checkReserved(OutputAnalyzer output, long addr, long size, String sizeString) {
+ output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
+ + Long.toHexString(addr + size)
+ + "\\] reserved 4096KB for Test");
+ }
+
+ public static void checkCommitted(OutputAnalyzer output, long addr, long size, String sizeString) {
+ output.shouldMatch("\\[0x[0]*" + Long.toHexString(addr) + " - 0x[0]*"
+ + Long.toHexString(addr + size)
+ + "\\] committed " + sizeString + " from.*");
+ }
+}