truffle: test/compiler/6695810/Test.java annotate

annotate test/compiler/6695810/Test.java @ 20543:e7d0505c8a30

8059758: Footprint regressions with JDK-8038423 Summary: Changes in JDK-8038423 always initialize (zero out) virtual memory used for auxiliary data structures. This causes a footprint regression for G1 in startup benchmarks. This is because they do not touch that memory at all, so the operating system does not actually commit these pages. The fix is to, if the initialization value of the data structures matches the default value of just committed memory (=0), do not do anything. Reviewed-by: jwilhelm, brutisso

author	tschatzl
date	Fri, 10 Oct 2014 15:51:58 +0200
parents	c18cbe5936b8
children

rev	line source
163 885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	1 /*
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 386 diff changeset	2 * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 163 diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
163 885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	4 *
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 163 diff changeset	5 * This code is free software; you can redistribute it and/or modify it
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 163 diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 163 diff changeset	7 * published by the Free Software Foundation.
163 885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	8 *
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 163 diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 163 diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 163 diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 163 diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 163 diff changeset	13 * accompanied this code).
163 885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	14 *
253 b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 163 diff changeset	15 * You should have received a copy of the GNU General Public License version
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 163 diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
b0fe4deeb9fb 6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.") kvn parents: 163 diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
163 885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 386 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 386 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 386 diff changeset	21 * questions.
163 885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	22 */
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	23
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	24 /*
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	25 * @test
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	26 * @bug 6695810
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	27 * @summary null oop passed to encode_heap_oop_not_null
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	28 * @run main/othervm -Xbatch Test
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	29 */
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	30
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	31 public class Test {
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	32 Test _t;
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	33
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	34 static void test(Test t1, Test t2) {
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	35 if (t2 != null)
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	36 t1._t = t2;
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	37
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	38 if (t2 != null)
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	39 t1._t = t2;
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	40 }
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	41
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	42 public static void main(String[] args) {
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	43 Test t = new Test();
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	44 for (int i = 0; i < 50; i++) {
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	45 for (int j = 0; j < 100; j++) {
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	46 test(t, t);
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	47 }
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	48 test(t, null);
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	49 }
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	50 for (int i = 0; i < 10000; i++) {
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	51 test(t, t);
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	52 }
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	53 test(t, null);
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	54 }
885ed790ecf0 6695810: null oop passed to encode_heap_oop_not_null kvn parents: diff changeset	55 }

Mercurial > hg > truffle

annotate test/compiler/6695810/Test.java @ 20543:e7d0505c8a30