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comparison src/share/vm/compiler/compileBroker.cpp @ 2187:986b2844f7a2

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6789220: CMS: intermittent timeout running nsk/regression/b4796926 Summary: The reference handler java thread and the GC could dead lock Reviewed-by: never, johnc, jcoomes
author brutisso
date Tue, 01 Feb 2011 14:05:46 +0100
parents 3582bf76420e
children 0cd39a385a72 850b2295a494
comparison
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2186:e49cfa28f585 2187:986b2844f7a2
1 /* 1 /*
2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
1208 // CompileBroker::is_compile_blocking 1208 // CompileBroker::is_compile_blocking
1209 // 1209 //
1210 // Should the current thread be blocked until this compilation request 1210 // Should the current thread be blocked until this compilation request
1211 // has been fulfilled? 1211 // has been fulfilled?
1212 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) { 1212 bool CompileBroker::is_compile_blocking(methodHandle method, int osr_bci) {
1213 return !BackgroundCompilation; 1213 if (!BackgroundCompilation) {
1214 Symbol* class_name = method->method_holder()->klass_part()->name();
1215 if (class_name->starts_with("java/lang/ref/Reference", 23)) {
1216 // The reference handler thread can dead lock with the GC if compilation is blocking,
1217 // so we avoid blocking compiles for anything in the java.lang.ref.Reference class,
1218 // including inner classes such as ReferenceHandler.
1219 return false;
1220 }
1221 return true;
1222 }
1223 return false;
1214 } 1224 }
1215 1225
1216 1226
1217 // ------------------------------------------------------------------ 1227 // ------------------------------------------------------------------
1218 // CompileBroker::preload_classes 1228 // CompileBroker::preload_classes