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test/compiler/whitebox/IsMethodCompilableTest.java@f90c822e73f8 (annotated)

test/compiler/whitebox/IsMethodCompilableTest.java

Wed, 27 Apr 2016 01:25:04 +0800

author

aoqi

date

Wed, 27 Apr 2016 01:25:04 +0800

changeset 0

f90c822e73f8

child 6876

710a3c8b516e

permissions

-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/*
aoqi@0	25	* @test IsMethodCompilableTest
aoqi@0	26	* @bug 8007270 8006683 8007288 8022832
aoqi@0	27	* @library /testlibrary /testlibrary/whitebox /testlibrary/com/oracle/java/testlibrary
aoqi@0	28	* @build IsMethodCompilableTest
aoqi@0	29	* @run main ClassFileInstaller sun.hotspot.WhiteBox
aoqi@0	30	* @run main ClassFileInstaller com.oracle.java.testlibrary.Platform
aoqi@0	31	* @run main/othervm/timeout=2400 -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:PerMethodRecompilationCutoff=3 -XX:CompileCommand=compileonly,SimpleTestCase$Helper::* IsMethodCompilableTest
aoqi@0	32	* @summary testing of WB::isMethodCompilable()
aoqi@0	33	* @author igor.ignatyev@oracle.com
aoqi@0	34	*/
aoqi@0	35
aoqi@0	36	import com.oracle.java.testlibrary.Platform;
aoqi@0	37
aoqi@0	38	public class IsMethodCompilableTest extends CompilerWhiteBoxTest {
aoqi@0	39	/**
aoqi@0	40	* Value of {@code -XX:PerMethodRecompilationCutoff}
aoqi@0	41	*/
aoqi@0	42	protected static final long PER_METHOD_RECOMPILATION_CUTOFF;
aoqi@0	43
aoqi@0	44	static {
aoqi@0	45	long tmp = Long.parseLong(
aoqi@0	46	getVMOption("PerMethodRecompilationCutoff", "400"));
aoqi@0	47	if (tmp == -1) {
aoqi@0	48	PER_METHOD_RECOMPILATION_CUTOFF = -1 /* Inf */;
aoqi@0	49	} else {
aoqi@0	50	PER_METHOD_RECOMPILATION_CUTOFF = (0xFFFFFFFFL & tmp);
aoqi@0	51	}
aoqi@0	52	}
aoqi@0	53
aoqi@0	54	public static void main(String[] args) throws Exception {
aoqi@0	55	CompilerWhiteBoxTest.main(IsMethodCompilableTest::new, args);
aoqi@0	56	}
aoqi@0	57
aoqi@0	58	private IsMethodCompilableTest(TestCase testCase) {
aoqi@0	59	super(testCase);
aoqi@0	60	// to prevent inlining of #method
aoqi@0	61	WHITE_BOX.testSetDontInlineMethod(method, true);
aoqi@0	62	}
aoqi@0	63
aoqi@0	64	/**
aoqi@0	65	* Tests {@code WB::isMethodCompilable()} by recompilation of tested method
aoqi@0	66	* 'PerMethodRecompilationCutoff' times and checks compilation status. Also
aoqi@0	67	* checks that WB::clearMethodState() clears no-compilable flags. Only
aoqi@0	68	* applicable to c2 compiled methods.
aoqi@0	69	*
aoqi@0	70	* @throws Exception if one of the checks fails.
aoqi@0	71	*/
aoqi@0	72	@Override
aoqi@0	73	protected void test() throws Exception {
aoqi@0	74	// Only c2 compilations can be disabled through PerMethodRecompilationCutoff
aoqi@0	75	if (!Platform.isServer()) {
aoqi@0	76	return;
aoqi@0	77	}
aoqi@0	78
aoqi@0	79	if (skipXcompOSR()) {
aoqi@0	80	return;
aoqi@0	81	}
aoqi@0	82	if (!isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) {
aoqi@0	83	throw new RuntimeException(method + " must be compilable");
aoqi@0	84	}
aoqi@0	85	System.out.println("PerMethodRecompilationCutoff = "
aoqi@0	86	+ PER_METHOD_RECOMPILATION_CUTOFF);
aoqi@0	87	if (PER_METHOD_RECOMPILATION_CUTOFF == -1) {
aoqi@0	88	System.err.println(
aoqi@0	89	"Warning: test is not applicable if PerMethodRecompilationCutoff == Inf");
aoqi@0	90	return;
aoqi@0	91	}
aoqi@0	92
aoqi@0	93	// deoptimize 'PerMethodRecompilationCutoff' times
aoqi@0	94	for (long attempts = 0, successes = 0;
aoqi@0	95	(successes < PER_METHOD_RECOMPILATION_CUTOFF) &&
aoqi@0	96	(attempts < PER_METHOD_RECOMPILATION_CUTOFF*2) &&
aoqi@0	97	isCompilable(COMP_LEVEL_FULL_OPTIMIZATION); attempts++) {
aoqi@0	98	if (compileAndDeoptimize() == COMP_LEVEL_FULL_OPTIMIZATION) {
aoqi@0	99	successes++;
aoqi@0	100	}
aoqi@0	101	}
aoqi@0	102
aoqi@0	103	if (!testCase.isOsr() && !isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) {
aoqi@0	104	// in osr test case count of deopt maybe more than iterations
aoqi@0	105	throw new RuntimeException(method + " is not compilable after "
aoqi@0	106	+ PER_METHOD_RECOMPILATION_CUTOFF + " iterations");
aoqi@0	107	}
aoqi@0	108
aoqi@0	109	// Now compile once more
aoqi@0	110	compileAndDeoptimize();
aoqi@0	111
aoqi@0	112	if (isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) {
aoqi@0	113	throw new RuntimeException(method + " is still compilable after "
aoqi@0	114	+ PER_METHOD_RECOMPILATION_CUTOFF + " iterations");
aoqi@0	115	}
aoqi@0	116	checkNotCompiled();
aoqi@0	117	compile();
aoqi@0	118	waitBackgroundCompilation();
aoqi@0	119	checkNotCompiled(COMP_LEVEL_FULL_OPTIMIZATION);
aoqi@0	120
aoqi@0	121	// WB.clearMethodState() must reset no-compilable flags
aoqi@0	122	WHITE_BOX.clearMethodState(method);
aoqi@0	123	if (!isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) {
aoqi@0	124	throw new RuntimeException(method
aoqi@0	125	+ " is not compilable after clearMethodState()");
aoqi@0	126	}
aoqi@0	127	compile();
aoqi@0	128	checkCompiled();
aoqi@0	129	}
aoqi@0	130
aoqi@0	131	private int compileAndDeoptimize() throws Exception {
aoqi@0	132	compile();
aoqi@0	133	waitBackgroundCompilation();
aoqi@0	134	int compLevel = getCompLevel();
aoqi@0	135	deoptimize();
aoqi@0	136	return compLevel;
aoqi@0	137	}
aoqi@0	138	}