author | rkennke |
Tue, 02 Apr 2019 18:13:42 +0200 | |
changeset 54383 | cdc3bb0983a6 |
parent 54361 | 879051d3772a |
child 54388 | a1acc800c87a |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2013, 2019, Red Hat, Inc. All rights reserved. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef SHARE_GC_SHENANDOAH_SHENANDOAHHEAP_HPP |
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#define SHARE_GC_SHENANDOAH_SHENANDOAHHEAP_HPP |
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#include "gc/shared/markBitMap.hpp" |
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#include "gc/shared/softRefPolicy.hpp" |
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#include "gc/shared/collectedHeap.hpp" |
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#include "gc/shenandoah/shenandoahAsserts.hpp" |
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#include "gc/shenandoah/shenandoahAllocRequest.hpp" |
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#include "gc/shenandoah/shenandoahHeapLock.hpp" |
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#include "gc/shenandoah/shenandoahEvacOOMHandler.hpp" |
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#include "gc/shenandoah/shenandoahSharedVariables.hpp" |
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#include "services/memoryManager.hpp" |
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class ConcurrentGCTimer; |
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class ReferenceProcessor; |
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class ShenandoahAllocTracker; |
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class ShenandoahCollectorPolicy; |
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class ShenandoahControlThread; |
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class ShenandoahGCSession; |
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class ShenandoahHeuristics; |
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class ShenandoahMarkingContext; |
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class ShenandoahPhaseTimings; |
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class ShenandoahHeap; |
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class ShenandoahHeapRegion; |
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class ShenandoahHeapRegionClosure; |
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class ShenandoahCollectionSet; |
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class ShenandoahFreeSet; |
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class ShenandoahConcurrentMark; |
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class ShenandoahMarkCompact; |
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class ShenandoahMonitoringSupport; |
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class ShenandoahPacer; |
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class ShenandoahTraversalGC; |
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class ShenandoahVerifier; |
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class ShenandoahWorkGang; |
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class VMStructs; |
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class ShenandoahRegionIterator : public StackObj { |
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private: |
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ShenandoahHeap* _heap; |
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DEFINE_PAD_MINUS_SIZE(0, DEFAULT_CACHE_LINE_SIZE, sizeof(volatile size_t)); |
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volatile size_t _index; |
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DEFINE_PAD_MINUS_SIZE(1, DEFAULT_CACHE_LINE_SIZE, 0); |
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// No implicit copying: iterators should be passed by reference to capture the state |
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ShenandoahRegionIterator(const ShenandoahRegionIterator& that); |
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ShenandoahRegionIterator& operator=(const ShenandoahRegionIterator& o); |
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public: |
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ShenandoahRegionIterator(); |
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ShenandoahRegionIterator(ShenandoahHeap* heap); |
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// Reset iterator to default state |
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void reset(); |
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// Returns next region, or NULL if there are no more regions. |
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// This is multi-thread-safe. |
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inline ShenandoahHeapRegion* next(); |
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// This is *not* MT safe. However, in the absence of multithreaded access, it |
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// can be used to determine if there is more work to do. |
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bool has_next() const; |
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}; |
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class ShenandoahHeapRegionClosure : public StackObj { |
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public: |
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virtual void heap_region_do(ShenandoahHeapRegion* r) = 0; |
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virtual bool is_thread_safe() { return false; } |
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}; |
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class ShenandoahUpdateRefsClosure: public OopClosure { |
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private: |
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ShenandoahHeap* _heap; |
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template <class T> |
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inline void do_oop_work(T* p); |
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public: |
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ShenandoahUpdateRefsClosure(); |
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inline void do_oop(oop* p); |
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inline void do_oop(narrowOop* p); |
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}; |
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#ifdef ASSERT |
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class ShenandoahAssertToSpaceClosure : public OopClosure { |
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private: |
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template <class T> |
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void do_oop_work(T* p); |
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public: |
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void do_oop(narrowOop* p); |
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void do_oop(oop* p); |
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}; |
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#endif |
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|
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class ShenandoahAlwaysTrueClosure : public BoolObjectClosure { |
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public: |
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bool do_object_b(oop p) { return true; } |
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121 |
}; |
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122 |
|
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class ShenandoahForwardedIsAliveClosure: public BoolObjectClosure { |
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private: |
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ShenandoahMarkingContext* const _mark_context; |
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126 |
public: |
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ShenandoahForwardedIsAliveClosure(); |
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bool do_object_b(oop obj); |
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}; |
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130 |
|
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class ShenandoahIsAliveClosure: public BoolObjectClosure { |
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private: |
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ShenandoahMarkingContext* const _mark_context; |
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134 |
public: |
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ShenandoahIsAliveClosure(); |
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bool do_object_b(oop obj); |
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137 |
}; |
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138 |
|
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class ShenandoahIsAliveSelector : public StackObj { |
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private: |
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ShenandoahIsAliveClosure _alive_cl; |
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ShenandoahForwardedIsAliveClosure _fwd_alive_cl; |
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143 |
public: |
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BoolObjectClosure* is_alive_closure(); |
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145 |
}; |
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146 |
|
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// Shenandoah GC is low-pause concurrent GC that uses Brooks forwarding pointers |
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// to encode forwarding data. See BrooksPointer for details on forwarding data encoding. |
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// See ShenandoahControlThread for GC cycle structure. |
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// |
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class ShenandoahHeap : public CollectedHeap { |
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friend class ShenandoahAsserts; |
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friend class VMStructs; |
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friend class ShenandoahGCSession; |
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155 |
|
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// ---------- Locks that guard important data structures in Heap |
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// |
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158 |
private: |
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ShenandoahHeapLock _lock; |
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160 |
|
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161 |
public: |
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162 |
ShenandoahHeapLock* lock() { |
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return &_lock; |
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164 |
} |
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165 |
|
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void assert_heaplock_owned_by_current_thread() NOT_DEBUG_RETURN; |
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void assert_heaplock_not_owned_by_current_thread() NOT_DEBUG_RETURN; |
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void assert_heaplock_or_safepoint() NOT_DEBUG_RETURN; |
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169 |
|
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// ---------- Initialization, termination, identification, printing routines |
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// |
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172 |
public: |
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173 |
static ShenandoahHeap* heap(); |
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static ShenandoahHeap* heap_no_check(); |
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175 |
|
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176 |
const char* name() const { return "Shenandoah"; } |
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ShenandoahHeap::Name kind() const { return CollectedHeap::Shenandoah; } |
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178 |
|
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179 |
ShenandoahHeap(ShenandoahCollectorPolicy* policy); |
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180 |
jint initialize(); |
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void post_initialize(); |
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void initialize_heuristics(); |
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183 |
|
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void initialize_serviceability(); |
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185 |
|
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void print_on(outputStream* st) const; |
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void print_extended_on(outputStream *st) const; |
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188 |
void print_tracing_info() const; |
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189 |
void print_gc_threads_on(outputStream* st) const; |
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190 |
void print_heap_regions_on(outputStream* st) const; |
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191 |
|
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void stop(); |
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193 |
|
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194 |
void prepare_for_verify(); |
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void verify(VerifyOption vo); |
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196 |
|
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// ---------- Heap counters and metrics |
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198 |
// |
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199 |
private: |
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size_t _initial_size; |
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201 |
DEFINE_PAD_MINUS_SIZE(0, DEFAULT_CACHE_LINE_SIZE, sizeof(volatile size_t)); |
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volatile size_t _used; |
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volatile size_t _committed; |
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volatile size_t _bytes_allocated_since_gc_start; |
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DEFINE_PAD_MINUS_SIZE(1, DEFAULT_CACHE_LINE_SIZE, 0); |
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206 |
|
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public: |
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void increase_used(size_t bytes); |
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void decrease_used(size_t bytes); |
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void set_used(size_t bytes); |
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211 |
|
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void increase_committed(size_t bytes); |
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void decrease_committed(size_t bytes); |
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void increase_allocated(size_t bytes); |
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size_t bytes_allocated_since_gc_start(); |
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void reset_bytes_allocated_since_gc_start(); |
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size_t max_capacity() const; |
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size_t initial_capacity() const; |
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size_t capacity() const; |
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size_t used() const; |
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size_t committed() const; |
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// ---------- Workers handling |
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// |
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private: |
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uint _max_workers; |
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ShenandoahWorkGang* _workers; |
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ShenandoahWorkGang* _safepoint_workers; |
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public: |
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uint max_workers(); |
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void assert_gc_workers(uint nworker) NOT_DEBUG_RETURN; |
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WorkGang* workers() const; |
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WorkGang* get_safepoint_workers(); |
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void gc_threads_do(ThreadClosure* tcl) const; |
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// ---------- Heap regions handling machinery |
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// |
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private: |
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MemRegion _heap_region; |
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bool _heap_region_special; |
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size_t _num_regions; |
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ShenandoahHeapRegion** _regions; |
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ShenandoahRegionIterator _update_refs_iterator; |
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public: |
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inline size_t num_regions() const { return _num_regions; } |
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inline bool is_heap_region_special() { return _heap_region_special; } |
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inline ShenandoahHeapRegion* const heap_region_containing(const void* addr) const; |
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inline size_t heap_region_index_containing(const void* addr) const; |
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inline ShenandoahHeapRegion* const get_region(size_t region_idx) const; |
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void heap_region_iterate(ShenandoahHeapRegionClosure* blk) const; |
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void parallel_heap_region_iterate(ShenandoahHeapRegionClosure* blk) const; |
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// ---------- GC state machinery |
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// |
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// GC state describes the important parts of collector state, that may be |
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// used to make barrier selection decisions in the native and generated code. |
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// Multiple bits can be set at once. |
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// |
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// Important invariant: when GC state is zero, the heap is stable, and no barriers |
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// are required. |
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// |
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public: |
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enum GCStateBitPos { |
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// Heap has forwarded objects: need RB, ACMP, CAS barriers. |
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HAS_FORWARDED_BITPOS = 0, |
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// Heap is under marking: needs SATB barriers. |
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MARKING_BITPOS = 1, |
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// Heap is under evacuation: needs WB barriers. (Set together with UNSTABLE) |
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EVACUATION_BITPOS = 2, |
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// Heap is under updating: needs SVRB/SVWB barriers. |
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UPDATEREFS_BITPOS = 3, |
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// Heap is under traversal collection |
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TRAVERSAL_BITPOS = 4, |
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}; |
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enum GCState { |
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STABLE = 0, |
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HAS_FORWARDED = 1 << HAS_FORWARDED_BITPOS, |
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MARKING = 1 << MARKING_BITPOS, |
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EVACUATION = 1 << EVACUATION_BITPOS, |
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UPDATEREFS = 1 << UPDATEREFS_BITPOS, |
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TRAVERSAL = 1 << TRAVERSAL_BITPOS, |
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}; |
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private: |
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ShenandoahSharedBitmap _gc_state; |
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ShenandoahSharedFlag _degenerated_gc_in_progress; |
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ShenandoahSharedFlag _full_gc_in_progress; |
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ShenandoahSharedFlag _full_gc_move_in_progress; |
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ShenandoahSharedFlag _progress_last_gc; |
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void set_gc_state_all_threads(char state); |
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void set_gc_state_mask(uint mask, bool value); |
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public: |
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char gc_state() const; |
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static address gc_state_addr(); |
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void set_concurrent_mark_in_progress(bool in_progress); |
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void set_evacuation_in_progress(bool in_progress); |
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void set_update_refs_in_progress(bool in_progress); |
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void set_degenerated_gc_in_progress(bool in_progress); |
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void set_full_gc_in_progress(bool in_progress); |
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void set_full_gc_move_in_progress(bool in_progress); |
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void set_concurrent_traversal_in_progress(bool in_progress); |
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void set_has_forwarded_objects(bool cond); |
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inline bool is_stable() const; |
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322 |
inline bool is_idle() const; |
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323 |
inline bool is_concurrent_mark_in_progress() const; |
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324 |
inline bool is_update_refs_in_progress() const; |
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325 |
inline bool is_evacuation_in_progress() const; |
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326 |
inline bool is_degenerated_gc_in_progress() const; |
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327 |
inline bool is_full_gc_in_progress() const; |
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328 |
inline bool is_full_gc_move_in_progress() const; |
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329 |
inline bool is_concurrent_traversal_in_progress() const; |
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330 |
inline bool has_forwarded_objects() const; |
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331 |
inline bool is_gc_in_progress_mask(uint mask) const; |
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332 |
|
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333 |
// ---------- GC cancellation and degeneration machinery |
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334 |
// |
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335 |
// Cancelled GC flag is used to notify concurrent phases that they should terminate. |
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336 |
// |
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337 |
public: |
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|
338 |
enum ShenandoahDegenPoint { |
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339 |
_degenerated_unset, |
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340 |
_degenerated_traversal, |
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341 |
_degenerated_outside_cycle, |
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342 |
_degenerated_mark, |
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343 |
_degenerated_evac, |
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344 |
_degenerated_updaterefs, |
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345 |
_DEGENERATED_LIMIT, |
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346 |
}; |
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|
347 |
|
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348 |
static const char* degen_point_to_string(ShenandoahDegenPoint point) { |
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349 |
switch (point) { |
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|
350 |
case _degenerated_unset: |
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351 |
return "<UNSET>"; |
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|
352 |
case _degenerated_traversal: |
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353 |
return "Traversal"; |
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|
354 |
case _degenerated_outside_cycle: |
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355 |
return "Outside of Cycle"; |
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|
356 |
case _degenerated_mark: |
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357 |
return "Mark"; |
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|
358 |
case _degenerated_evac: |
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|
359 |
return "Evacuation"; |
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|
360 |
case _degenerated_updaterefs: |
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|
361 |
return "Update Refs"; |
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|
362 |
default: |
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|
363 |
ShouldNotReachHere(); |
9c18c9d839d3
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|
364 |
return "ERROR"; |
9c18c9d839d3
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|
365 |
} |
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|
366 |
}; |
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|
367 |
|
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|
368 |
private: |
9c18c9d839d3
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|
369 |
enum CancelState { |
9c18c9d839d3
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|
370 |
// Normal state. GC has not been cancelled and is open for cancellation. |
9c18c9d839d3
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|
371 |
// Worker threads can suspend for safepoint. |
9c18c9d839d3
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|
372 |
CANCELLABLE, |
9c18c9d839d3
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|
373 |
|
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|
374 |
// GC has been cancelled. Worker threads can not suspend for |
9c18c9d839d3
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|
375 |
// safepoint but must finish their work as soon as possible. |
9c18c9d839d3
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|
376 |
CANCELLED, |
9c18c9d839d3
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|
377 |
|
9c18c9d839d3
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|
378 |
// GC has not been cancelled and must not be cancelled. At least |
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|
379 |
// one worker thread checks for pending safepoint and may suspend |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
380 |
// if a safepoint is pending. |
9c18c9d839d3
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381 |
NOT_CANCELLED |
9c18c9d839d3
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|
382 |
}; |
9c18c9d839d3
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changeset
|
383 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
384 |
ShenandoahSharedEnumFlag<CancelState> _cancelled_gc; |
53582 | 385 |
bool try_cancel_gc(); |
52925
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
386 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
387 |
public: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
388 |
static address cancelled_gc_addr(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
389 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
390 |
inline bool cancelled_gc() const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
391 |
inline bool check_cancelled_gc_and_yield(bool sts_active = true); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
392 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
393 |
inline void clear_cancelled_gc(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
394 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
395 |
void cancel_gc(GCCause::Cause cause); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
396 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
397 |
// ---------- GC operations entry points |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
398 |
// |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
399 |
public: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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diff
changeset
|
400 |
// Entry points to STW GC operations, these cause a related safepoint, that then |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
401 |
// call the entry method below |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
402 |
void vmop_entry_init_mark(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
403 |
void vmop_entry_final_mark(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
404 |
void vmop_entry_final_evac(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
405 |
void vmop_entry_init_updaterefs(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
406 |
void vmop_entry_final_updaterefs(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
407 |
void vmop_entry_init_traversal(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
408 |
void vmop_entry_final_traversal(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
409 |
void vmop_entry_full(GCCause::Cause cause); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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|
410 |
void vmop_degenerated(ShenandoahDegenPoint point); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
411 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
412 |
// Entry methods to normally STW GC operations. These set up logging, monitoring |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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|
413 |
// and workers for net VM operation |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
414 |
void entry_init_mark(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
415 |
void entry_final_mark(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
416 |
void entry_final_evac(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
417 |
void entry_init_updaterefs(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
418 |
void entry_final_updaterefs(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
419 |
void entry_init_traversal(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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|
420 |
void entry_final_traversal(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
421 |
void entry_full(GCCause::Cause cause); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
422 |
void entry_degenerated(int point); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
423 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
424 |
// Entry methods to normally concurrent GC operations. These set up logging, monitoring |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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|
425 |
// for concurrent operation. |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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|
426 |
void entry_reset(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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|
427 |
void entry_mark(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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|
428 |
void entry_preclean(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
429 |
void entry_cleanup(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
430 |
void entry_evac(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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diff
changeset
|
431 |
void entry_updaterefs(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
432 |
void entry_traversal(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
433 |
void entry_uncommit(double shrink_before); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
434 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
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changeset
|
435 |
private: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
diff
changeset
|
436 |
// Actual work for the phases |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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diff
changeset
|
437 |
void op_init_mark(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
438 |
void op_final_mark(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
439 |
void op_final_evac(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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diff
changeset
|
440 |
void op_init_updaterefs(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
441 |
void op_final_updaterefs(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
442 |
void op_init_traversal(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
diff
changeset
|
443 |
void op_final_traversal(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
444 |
void op_full(GCCause::Cause cause); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
diff
changeset
|
445 |
void op_degenerated(ShenandoahDegenPoint point); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
446 |
void op_degenerated_fail(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
447 |
void op_degenerated_futile(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
448 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
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changeset
|
449 |
void op_reset(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
450 |
void op_mark(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
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changeset
|
451 |
void op_preclean(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
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changeset
|
452 |
void op_cleanup(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
453 |
void op_conc_evac(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
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changeset
|
454 |
void op_stw_evac(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
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changeset
|
455 |
void op_updaterefs(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
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changeset
|
456 |
void op_traversal(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
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|
457 |
void op_uncommit(double shrink_before); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
458 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
459 |
// Messages for GC trace events, they have to be immortal for |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
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|
460 |
// passing around the logging/tracing systems |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
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|
461 |
const char* init_mark_event_message() const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
462 |
const char* final_mark_event_message() const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
463 |
const char* conc_mark_event_message() const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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diff
changeset
|
464 |
const char* degen_event_message(ShenandoahDegenPoint point) const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
465 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
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changeset
|
466 |
// ---------- GC subsystems |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
467 |
// |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
468 |
private: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
469 |
ShenandoahControlThread* _control_thread; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
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changeset
|
470 |
ShenandoahCollectorPolicy* _shenandoah_policy; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
471 |
ShenandoahHeuristics* _heuristics; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
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changeset
|
472 |
ShenandoahFreeSet* _free_set; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
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changeset
|
473 |
ShenandoahConcurrentMark* _scm; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
474 |
ShenandoahTraversalGC* _traversal_gc; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
475 |
ShenandoahMarkCompact* _full_gc; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
476 |
ShenandoahPacer* _pacer; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
477 |
ShenandoahVerifier* _verifier; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
478 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
479 |
ShenandoahAllocTracker* _alloc_tracker; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
480 |
ShenandoahPhaseTimings* _phase_timings; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
481 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
482 |
ShenandoahControlThread* control_thread() { return _control_thread; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
483 |
ShenandoahMarkCompact* full_gc() { return _full_gc; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
484 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
485 |
public: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
486 |
ShenandoahCollectorPolicy* shenandoah_policy() const { return _shenandoah_policy; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
487 |
ShenandoahHeuristics* heuristics() const { return _heuristics; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
488 |
ShenandoahFreeSet* free_set() const { return _free_set; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
489 |
ShenandoahConcurrentMark* concurrent_mark() { return _scm; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
490 |
ShenandoahTraversalGC* traversal_gc() { return _traversal_gc; } |
54045 | 491 |
ShenandoahPacer* pacer() const { return _pacer; } |
52925
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
492 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
493 |
ShenandoahPhaseTimings* phase_timings() const { return _phase_timings; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
494 |
ShenandoahAllocTracker* alloc_tracker() const { return _alloc_tracker; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
495 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
496 |
ShenandoahVerifier* verifier(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
497 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
498 |
// ---------- VM subsystem bindings |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
499 |
// |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
500 |
private: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
501 |
ShenandoahMonitoringSupport* _monitoring_support; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
502 |
MemoryPool* _memory_pool; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
503 |
GCMemoryManager _stw_memory_manager; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
504 |
GCMemoryManager _cycle_memory_manager; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
505 |
ConcurrentGCTimer* _gc_timer; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
506 |
SoftRefPolicy _soft_ref_policy; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
507 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
508 |
public: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
509 |
ShenandoahMonitoringSupport* monitoring_support() { return _monitoring_support; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
510 |
GCMemoryManager* cycle_memory_manager() { return &_cycle_memory_manager; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
511 |
GCMemoryManager* stw_memory_manager() { return &_stw_memory_manager; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
512 |
SoftRefPolicy* soft_ref_policy() { return &_soft_ref_policy; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
513 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
514 |
GrowableArray<GCMemoryManager*> memory_managers(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
515 |
GrowableArray<MemoryPool*> memory_pools(); |
53873
5cf6623b1283
8219524: Shenandoah misreports "committed" size in MemoryMXBean
shade
parents:
53850
diff
changeset
|
516 |
MemoryUsage memory_usage(); |
52925
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
517 |
GCTracer* tracer(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
518 |
GCTimer* gc_timer() const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
519 |
CollectorPolicy* collector_policy() const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
520 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
521 |
// ---------- Reference processing |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
522 |
// |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
523 |
private: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
524 |
AlwaysTrueClosure _subject_to_discovery; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
525 |
ReferenceProcessor* _ref_processor; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
526 |
ShenandoahSharedFlag _process_references; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
527 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
528 |
void ref_processing_init(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
529 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
530 |
public: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
531 |
ReferenceProcessor* ref_processor() { return _ref_processor; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
532 |
void set_process_references(bool pr); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
533 |
bool process_references() const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
534 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
535 |
// ---------- Class Unloading |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
536 |
// |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
537 |
private: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
538 |
ShenandoahSharedFlag _unload_classes; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
539 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
540 |
public: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
541 |
void set_unload_classes(bool uc); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
542 |
bool unload_classes() const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
543 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
544 |
// Delete entries for dead interned string and clean up unreferenced symbols |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
545 |
// in symbol table, possibly in parallel. |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
546 |
void unload_classes_and_cleanup_tables(bool full_gc); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
547 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
548 |
// ---------- Generic interface hooks |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
549 |
// Minor things that super-interface expects us to implement to play nice with |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
550 |
// the rest of runtime. Some of the things here are not required to be implemented, |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
551 |
// and can be stubbed out. |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
552 |
// |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
553 |
public: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
554 |
AdaptiveSizePolicy* size_policy() shenandoah_not_implemented_return(NULL); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
555 |
bool is_maximal_no_gc() const shenandoah_not_implemented_return(false); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
556 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
557 |
bool is_in(const void* p) const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
558 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
559 |
size_t obj_size(oop obj) const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
560 |
virtual ptrdiff_t cell_header_size() const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
561 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
562 |
void collect(GCCause::Cause cause); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
563 |
void do_full_collection(bool clear_all_soft_refs); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
564 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
565 |
// Used for parsing heap during error printing |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
566 |
HeapWord* block_start(const void* addr) const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
567 |
bool block_is_obj(const HeapWord* addr) const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
568 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
569 |
// Used for native heap walkers: heap dumpers, mostly |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
570 |
void object_iterate(ObjectClosure* cl); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
571 |
void safe_object_iterate(ObjectClosure* cl); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
572 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
573 |
// Used by RMI |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
574 |
jlong millis_since_last_gc(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
575 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
576 |
// ---------- Safepoint interface hooks |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
577 |
// |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
578 |
public: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
579 |
void safepoint_synchronize_begin(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
580 |
void safepoint_synchronize_end(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
581 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
582 |
// ---------- Code roots handling hooks |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
583 |
// |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
584 |
public: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
585 |
void register_nmethod(nmethod* nm); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
586 |
void unregister_nmethod(nmethod* nm); |
54361
879051d3772a
8220610: Make CollectedHeap nmethod functions pure virtual
stefank
parents:
54338
diff
changeset
|
587 |
void flush_nmethod(nmethod* nm) {} |
879051d3772a
8220610: Make CollectedHeap nmethod functions pure virtual
stefank
parents:
54338
diff
changeset
|
588 |
void verify_nmethod(nmethod* nm) {} |
52925
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
589 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
590 |
// ---------- Pinning hooks |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
591 |
// |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
592 |
public: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
593 |
// Shenandoah supports per-object (per-region) pinning |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
594 |
bool supports_object_pinning() const { return true; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
595 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
596 |
oop pin_object(JavaThread* thread, oop obj); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
597 |
void unpin_object(JavaThread* thread, oop obj); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
598 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
599 |
// ---------- Allocation support |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
600 |
// |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
601 |
private: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
602 |
HeapWord* allocate_memory_under_lock(ShenandoahAllocRequest& request, bool& in_new_region); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
603 |
inline HeapWord* allocate_from_gclab(Thread* thread, size_t size); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
604 |
HeapWord* allocate_from_gclab_slow(Thread* thread, size_t size); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
605 |
HeapWord* allocate_new_gclab(size_t min_size, size_t word_size, size_t* actual_size); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
606 |
void retire_and_reset_gclabs(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
607 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
608 |
public: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
609 |
HeapWord* allocate_memory(ShenandoahAllocRequest& request); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
610 |
HeapWord* mem_allocate(size_t size, bool* what); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
611 |
MetaWord* satisfy_failed_metadata_allocation(ClassLoaderData* loader_data, |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
612 |
size_t size, |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
613 |
Metaspace::MetadataType mdtype); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
614 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
615 |
oop obj_allocate(Klass* klass, int size, TRAPS); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
616 |
oop array_allocate(Klass* klass, int size, int length, bool do_zero, TRAPS); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
617 |
oop class_allocate(Klass* klass, int size, TRAPS); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
618 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
619 |
void notify_mutator_alloc_words(size_t words, bool waste); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
620 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
621 |
// Shenandoah supports TLAB allocation |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
622 |
bool supports_tlab_allocation() const { return true; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
623 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
624 |
HeapWord* allocate_new_tlab(size_t min_size, size_t requested_size, size_t* actual_size); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
625 |
size_t tlab_capacity(Thread *thr) const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
626 |
size_t unsafe_max_tlab_alloc(Thread *thread) const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
627 |
size_t max_tlab_size() const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
628 |
size_t tlab_used(Thread* ignored) const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
629 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
630 |
HeapWord* tlab_post_allocation_setup(HeapWord* obj); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
631 |
void fill_with_dummy_object(HeapWord* start, HeapWord* end, bool zap); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
632 |
size_t min_dummy_object_size() const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
633 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
634 |
void resize_tlabs(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
635 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
636 |
void ensure_parsability(bool retire_tlabs); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
637 |
void make_parsable(bool retire_tlabs); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
638 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
639 |
// ---------- Marking support |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
640 |
// |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
641 |
private: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
642 |
ShenandoahMarkingContext* _marking_context; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
643 |
MemRegion _bitmap_region; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
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|
644 |
MemRegion _aux_bitmap_region; |
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|
645 |
MarkBitMap _verification_bit_map; |
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|
646 |
MarkBitMap _aux_bit_map; |
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changeset
|
647 |
|
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|
648 |
size_t _bitmap_size; |
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|
649 |
size_t _bitmap_regions_per_slice; |
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|
650 |
size_t _bitmap_bytes_per_slice; |
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|
651 |
|
54047
0a9cb99a98a0
8220162: Shenandoah should not commit HugeTLBFS memory
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|
652 |
bool _bitmap_region_special; |
0a9cb99a98a0
8220162: Shenandoah should not commit HugeTLBFS memory
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parents:
54045
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|
653 |
bool _aux_bitmap_region_special; |
0a9cb99a98a0
8220162: Shenandoah should not commit HugeTLBFS memory
shade
parents:
54045
diff
changeset
|
654 |
|
52925
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|
655 |
// Used for buffering per-region liveness data. |
9c18c9d839d3
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|
656 |
// Needed since ShenandoahHeapRegion uses atomics to update liveness. |
9c18c9d839d3
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|
657 |
// |
9c18c9d839d3
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|
658 |
// The array has max-workers elements, each of which is an array of |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
659 |
// jushort * max_regions. The choice of jushort is not accidental: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
660 |
// there is a tradeoff between static/dynamic footprint that translates |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
661 |
// into cache pressure (which is already high during marking), and |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
662 |
// too many atomic updates. size_t/jint is too large, jbyte is too small. |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
663 |
jushort** _liveness_cache; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
664 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
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changeset
|
665 |
public: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
666 |
inline ShenandoahMarkingContext* complete_marking_context() const; |
9c18c9d839d3
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|
667 |
inline ShenandoahMarkingContext* marking_context() const; |
9c18c9d839d3
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|
668 |
inline void mark_complete_marking_context(); |
9c18c9d839d3
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|
669 |
inline void mark_incomplete_marking_context(); |
9c18c9d839d3
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changeset
|
670 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
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changeset
|
671 |
template<class T> |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
672 |
inline void marked_object_iterate(ShenandoahHeapRegion* region, T* cl); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
673 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
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changeset
|
674 |
template<class T> |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
675 |
inline void marked_object_iterate(ShenandoahHeapRegion* region, T* cl, HeapWord* limit); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
676 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
677 |
template<class T> |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
678 |
inline void marked_object_oop_iterate(ShenandoahHeapRegion* region, T* cl, HeapWord* limit); |
9c18c9d839d3
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changeset
|
679 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
680 |
void reset_mark_bitmap(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
681 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
682 |
// SATB barriers hooks |
53850 | 683 |
template<bool RESOLVE> |
52925
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|
684 |
inline bool requires_marking(const void* entry) const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
685 |
void force_satb_flush_all_threads(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
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changeset
|
686 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
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changeset
|
687 |
// Support for bitmap uncommits |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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diff
changeset
|
688 |
bool commit_bitmap_slice(ShenandoahHeapRegion *r); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
diff
changeset
|
689 |
bool uncommit_bitmap_slice(ShenandoahHeapRegion *r); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
690 |
bool is_bitmap_slice_committed(ShenandoahHeapRegion* r, bool skip_self = false); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
691 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
692 |
// Liveness caching support |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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|
693 |
jushort* get_liveness_cache(uint worker_id); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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diff
changeset
|
694 |
void flush_liveness_cache(uint worker_id); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
diff
changeset
|
695 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
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changeset
|
696 |
// ---------- Evacuation support |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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changeset
|
697 |
// |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
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changeset
|
698 |
private: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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parents:
diff
changeset
|
699 |
ShenandoahCollectionSet* _collection_set; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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diff
changeset
|
700 |
ShenandoahEvacOOMHandler _oom_evac_handler; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
701 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
702 |
void evacuate_and_update_roots(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
703 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
704 |
public: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
705 |
static address in_cset_fast_test_addr(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
706 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
707 |
ShenandoahCollectionSet* collection_set() const { return _collection_set; } |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
708 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
709 |
template <class T> |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
710 |
inline bool in_collection_set(T obj) const; |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
711 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
712 |
// Avoid accidentally calling the method above with ShenandoahHeapRegion*, which would be *wrong*. |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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diff
changeset
|
713 |
inline bool in_collection_set(ShenandoahHeapRegion* r) shenandoah_not_implemented_return(false); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
714 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
715 |
// Evacuates object src. Returns the evacuated object, either evacuated |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
716 |
// by this thread, or by some other thread. |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
717 |
inline oop evacuate_object(oop src, Thread* thread); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
718 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
719 |
// Call before/after evacuation. |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
720 |
void enter_evacuation(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
721 |
void leave_evacuation(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
722 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
723 |
// ---------- Helper functions |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
724 |
// |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
725 |
public: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
726 |
template <class T> |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
727 |
inline oop evac_update_with_forwarded(T* p); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
728 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
729 |
template <class T> |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
730 |
inline oop maybe_update_with_forwarded(T* p); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
731 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
732 |
template <class T> |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
733 |
inline oop maybe_update_with_forwarded_not_null(T* p, oop obj); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
734 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
735 |
template <class T> |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
736 |
inline oop update_with_forwarded_not_null(T* p, oop obj); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
737 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
738 |
inline oop atomic_compare_exchange_oop(oop n, narrowOop* addr, oop c); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
739 |
inline oop atomic_compare_exchange_oop(oop n, oop* addr, oop c); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
740 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
741 |
void trash_humongous_region_at(ShenandoahHeapRegion *r); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
742 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
743 |
void deduplicate_string(oop str); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
744 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
745 |
void stop_concurrent_marking(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
746 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
747 |
private: |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
748 |
void trash_cset_regions(); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
749 |
void update_heap_references(bool concurrent); |
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
750 |
|
9c18c9d839d3
8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
rkennke
parents:
diff
changeset
|
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// ---------- Testing helpers functions |
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// |
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private: |
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ShenandoahSharedFlag _inject_alloc_failure; |
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void try_inject_alloc_failure(); |
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bool should_inject_alloc_failure(); |
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}; |
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#endif // SHARE_GC_SHENANDOAH_SHENANDOAHHEAP_HPP |