Mercurial > hg > graal-jvmci-8
view src/share/vm/gc_interface/gcCause.hpp @ 2226:c5a923563727
6912621: iCMS: Error: assert(_markBitMap.isMarked(addr + 1),"Missing Printezis bit?")
Summary: Fix block_size_if_printezis_bits() so it does not expect the bits, only uses them when available. Fix block_size_no_stall() so it does not stall when the bits are missing such cases, letting the caller deal with zero size returns. Constant pool cache oops do not need to be unparsable or conc_unsafe after their klass pointer is installed. Some cosmetic clean-ups and some assertion checking for conc-usafety which, in the presence of class file redefinition, has no a-priori time boundedness, so all GCs must be able to safely deal with putatively conc-unsafe objects in a stop-world pause.
Reviewed-by: jmasa, johnc
author | ysr |
---|---|
date | Mon, 07 Feb 2011 22:19:57 -0800 |
parents | c798c277ddd1 |
children | 9509c20bba28 |
line wrap: on
line source
/* * Copyright (c) 2002, 2011, 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. * */ #ifndef SHARE_VM_GC_INTERFACE_GCCAUSE_HPP #define SHARE_VM_GC_INTERFACE_GCCAUSE_HPP #include "memory/allocation.hpp" // // This class exposes implementation details of the various // collector(s), and we need to be very careful with it. If // use of this class grows, we should split it into public // and implemenation-private "causes". // class GCCause : public AllStatic { public: enum Cause { /* public */ _java_lang_system_gc, _full_gc_alot, _scavenge_alot, _allocation_profiler, _jvmti_force_gc, _gc_locker, _heap_inspection, _heap_dump, /* implementation independent, but reserved for GC use */ _no_gc, _no_cause_specified, _allocation_failure, /* implementation specific */ _tenured_generation_full, _permanent_generation_full, _cms_generation_full, _cms_initial_mark, _cms_final_remark, _old_generation_expanded_on_last_scavenge, _old_generation_too_full_to_scavenge, _adaptive_size_policy, _g1_inc_collection_pause, _last_ditch_collection, _last_gc_cause }; inline static bool is_user_requested_gc(GCCause::Cause cause) { return (cause == GCCause::_java_lang_system_gc || cause == GCCause::_jvmti_force_gc); } inline static bool is_serviceability_requested_gc(GCCause::Cause cause) { return (cause == GCCause::_jvmti_force_gc || cause == GCCause::_heap_inspection || cause == GCCause::_heap_dump); } // Return a string describing the GCCause. static const char* to_string(GCCause::Cause cause); }; #endif // SHARE_VM_GC_INTERFACE_GCCAUSE_HPP