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test/runtime/NMT/MallocSiteHashOverflow.java@6640f982c1be (annotated)

test/runtime/NMT/MallocSiteHashOverflow.java

Thu, 04 Sep 2014 10:14:37 -0400

author

gtriantafill

date

Thu, 04 Sep 2014 10:14:37 -0400

changeset 7110

6640f982c1be

parent 7108

017b0145f20c

child 7115

3f9ff5e261c6

permissions

-rw-r--r--

8054711: [TESTBUG] Enable NMT2 tests after NMT2 is integrated
Summary: enable tests for NMT2
Reviewed-by: ctornqvi, zgu

gtriantafill@7108	1	/*
gtriantafill@7108	2	* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
gtriantafill@7108	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
gtriantafill@7108	4	*
gtriantafill@7108	5	* This code is free software; you can redistribute it and/or modify it
gtriantafill@7108	6	* under the terms of the GNU General Public License version 2 only, as
gtriantafill@7108	7	* published by the Free Software Foundation.
gtriantafill@7108	8	*
gtriantafill@7108	9	* This code is distributed in the hope that it will be useful, but WITHOUT
gtriantafill@7108	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
gtriantafill@7108	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
gtriantafill@7108	12	* version 2 for more details (a copy is included in the LICENSE file that
gtriantafill@7108	13	* accompanied this code).
gtriantafill@7108	14	*
gtriantafill@7108	15	* You should have received a copy of the GNU General Public License version
gtriantafill@7108	16	* 2 along with this work; if not, write to the Free Software Foundation,
gtriantafill@7108	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
gtriantafill@7108	18	*
gtriantafill@7108	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
gtriantafill@7108	20	* or visit www.oracle.com if you need additional information or have any
gtriantafill@7108	21	* questions.
gtriantafill@7108	22	*/
gtriantafill@7108	23
gtriantafill@7108	24	/*
gtriantafill@7108	25	* @key stress
gtriantafill@7108	26	* @test
gtriantafill@7108	27	* @summary Test corner case that overflows malloc site hashtable bucket
gtriantafill@7108	28	* @key nmt jcmd
gtriantafill@7108	29	* @library /testlibrary /testlibrary/whitebox
gtriantafill@7108	30	* @ignore - This test is disabled since it will stress NMT and timeout during normal testing
gtriantafill@7108	31	* @build MallocSiteHashOverflow
gtriantafill@7108	32	* @run main ClassFileInstaller sun.hotspot.WhiteBox
gtriantafill@7108	33	* @run main/othervm/timeout=480 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail MallocSiteHashOverflow
gtriantafill@7108	34	*/
gtriantafill@7108	35
gtriantafill@7108	36	import com.oracle.java.testlibrary.*;
gtriantafill@7108	37	import sun.hotspot.WhiteBox;
gtriantafill@7108	38
gtriantafill@7108	39	public class MallocSiteHashOverflow {
gtriantafill@7108	40	private static long K = 1024;
gtriantafill@7108	41	public static void main(String args[]) throws Exception {
gtriantafill@7108	42	String vm_name = System.getProperty("java.vm.name");
gtriantafill@7108	43
gtriantafill@7108	44	// For 32-bit systems, create 257 malloc sites with the same hash bucket to overflow a hash bucket
gtriantafill@7108	45	// For 64-bit systems, create 64K + 1 malloc sites with the same hash bucket to overflow a hash bucket
gtriantafill@7108	46	long entries = 257;
gtriantafill@7108	47	if (Platform.is64bit()) {
gtriantafill@7108	48	entries = 64 * K + 1;
gtriantafill@7108	49	}
gtriantafill@7108	50
gtriantafill@7108	51	OutputAnalyzer output;
gtriantafill@7108	52	WhiteBox wb = WhiteBox.getWhiteBox();
gtriantafill@7108	53
gtriantafill@7108	54	// Grab my own PID
gtriantafill@7108	55	String pid = Integer.toString(ProcessTools.getProcessId());
gtriantafill@7108	56	ProcessBuilder pb = new ProcessBuilder();
gtriantafill@7108	57
gtriantafill@7108	58	wb.NMTOverflowHashBucket(entries);
gtriantafill@7108	59
gtriantafill@7108	60	// Run 'jcmd <pid> VM.native_memory summary'
gtriantafill@7108	61	pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "statistics"});
gtriantafill@7108	62	output = new OutputAnalyzer(pb.start());
gtriantafill@7108	63	output.shouldContain("Tracking level has been downgraded due to lack of resources");
gtriantafill@7108	64	}
gtriantafill@7108	65	}