Mercurial > hg > graal-compiler
view src/share/vm/gc_implementation/parallelScavenge/psScavenge.hpp @ 1751:2528b5bd749c
6980262: Memory leak when exception is thrown in static initializer
Summary: Use resource memory instead of c-heap for the exception message
Reviewed-by: phh, jmasa
author | kamg |
---|---|
date | Fri, 27 Aug 2010 15:05:28 -0400 |
parents | c18cbe5936b8 |
children | 894b1d7c7e01 |
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/* * Copyright (c) 2002, 2008, 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. * */ class GCTaskManager; class GCTaskQueue; class OopStack; class ReferenceProcessor; class ParallelScavengeHeap; class PSIsAliveClosure; class PSRefProcTaskExecutor; class PSScavenge: AllStatic { friend class PSIsAliveClosure; friend class PSKeepAliveClosure; friend class PSPromotionManager; enum ScavengeSkippedCause { not_skipped = 0, to_space_not_empty, promoted_too_large, full_follows_scavenge }; // Saved value of to_space->top(), used to prevent objects in to_space from // being rescanned. static HeapWord* _to_space_top_before_gc; // Number of consecutive attempts to scavenge that were skipped static int _consecutive_skipped_scavenges; protected: // Flags/counters static ReferenceProcessor* _ref_processor; // Reference processor for scavenging. static PSIsAliveClosure _is_alive_closure; // Closure used for reference processing static CardTableExtension* _card_table; // We cache the card table for fast access. static bool _survivor_overflow; // Overflow this collection static int _tenuring_threshold; // tenuring threshold for next scavenge static elapsedTimer _accumulated_time; // total time spent on scavenge static HeapWord* _young_generation_boundary; // The lowest address possible for the young_gen. // This is used to decide if an oop should be scavenged, // cards should be marked, etc. static GrowableArray<markOop>* _preserved_mark_stack; // List of marks to be restored after failed promotion static GrowableArray<oop>* _preserved_oop_stack; // List of oops that need their mark restored. static CollectorCounters* _counters; // collector performance counters static void clean_up_failed_promotion(); static bool should_attempt_scavenge(); static HeapWord* to_space_top_before_gc() { return _to_space_top_before_gc; } static inline void save_to_space_top_before_gc(); // Private accessors static CardTableExtension* const card_table() { assert(_card_table != NULL, "Sanity"); return _card_table; } public: // Accessors static int tenuring_threshold() { return _tenuring_threshold; } static elapsedTimer* accumulated_time() { return &_accumulated_time; } static bool promotion_failed() { return _preserved_mark_stack != NULL; } static int consecutive_skipped_scavenges() { return _consecutive_skipped_scavenges; } // Performance Counters static CollectorCounters* counters() { return _counters; } // Used by scavenge_contents && psMarkSweep static ReferenceProcessor* const reference_processor() { assert(_ref_processor != NULL, "Sanity"); return _ref_processor; } // Used to add tasks static GCTaskManager* const gc_task_manager(); // The promotion managers tell us if they encountered overflow static void set_survivor_overflow(bool state) { _survivor_overflow = state; } // Adaptive size policy support. When the young generation/old generation // boundary moves, _young_generation_boundary must be reset static void set_young_generation_boundary(HeapWord* v) { _young_generation_boundary = v; } // Called by parallelScavengeHeap to init the tenuring threshold static void initialize(); // Scavenge entry point static void invoke(); // Return true is a collection was done. Return // false if the collection was skipped. static bool invoke_no_policy(); // If an attempt to promote fails, this method is invoked static void oop_promotion_failed(oop obj, markOop obj_mark); template <class T> static inline bool should_scavenge(T* p); // These call should_scavenge() above and, if it returns true, also check that // the object was not newly copied into to_space. The version with the bool // argument is a convenience wrapper that fetches the to_space pointer from // the heap and calls the other version (if the arg is true). template <class T> static inline bool should_scavenge(T* p, MutableSpace* to_space); template <class T> static inline bool should_scavenge(T* p, bool check_to_space); template <class T> inline static void copy_and_push_safe_barrier(PSPromotionManager* pm, T* p); // Is an object in the young generation // This assumes that the HeapWord argument is in the heap, // so it only checks one side of the complete predicate. inline static bool is_obj_in_young(HeapWord* o) { const bool result = (o >= _young_generation_boundary); return result; } };