bb7a8f643f
Reviewed-by: shade
190 lines
6.6 KiB
C++
190 lines
6.6 KiB
C++
/*
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* Copyright (c) 2013, 2019, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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_SHENANDOAHBARRIERSET_HPP
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#define SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSET_HPP
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#include "gc/shared/accessBarrierSupport.hpp"
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#include "gc/shared/barrierSet.hpp"
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#include "gc/shenandoah/shenandoahHeap.hpp"
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#include "gc/shenandoah/shenandoahSATBMarkQueueSet.hpp"
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class ShenandoahBarrierSetAssembler;
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class ShenandoahBarrierSet: public BarrierSet {
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public:
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enum ArrayCopyStoreValMode {
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NONE,
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RESOLVE_BARRIER,
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EVAC_BARRIER
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};
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private:
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ShenandoahHeap* _heap;
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BufferNode::Allocator _satb_mark_queue_buffer_allocator;
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ShenandoahSATBMarkQueueSet _satb_mark_queue_set;
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public:
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ShenandoahBarrierSet(ShenandoahHeap* heap);
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static ShenandoahBarrierSetAssembler* assembler();
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inline static ShenandoahBarrierSet* barrier_set() {
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return barrier_set_cast<ShenandoahBarrierSet>(BarrierSet::barrier_set());
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}
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static ShenandoahSATBMarkQueueSet& satb_mark_queue_set() {
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return barrier_set()->_satb_mark_queue_set;
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}
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static bool need_load_reference_barrier(DecoratorSet decorators, BasicType type);
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static bool use_load_reference_barrier_native(DecoratorSet decorators, BasicType type);
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static bool need_keep_alive_barrier(DecoratorSet decorators, BasicType type);
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void print_on(outputStream* st) const;
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bool is_a(BarrierSet::Name bsn);
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bool is_aligned(HeapWord* hw);
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template <class T> void
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write_ref_array_pre_work(T* src, T* dst, size_t count, bool dest_uninitialized);
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inline void arraycopy_pre(oop* src, oop* dst, size_t count);
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inline void arraycopy_pre(narrowOop* src, narrowOop* dst, size_t count);
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inline void arraycopy_update(oop* src, size_t count);
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inline void arraycopy_update(narrowOop* src, size_t count);
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inline void clone_barrier(oop src);
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void clone_barrier_runtime(oop src);
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virtual void on_thread_create(Thread* thread);
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virtual void on_thread_destroy(Thread* thread);
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virtual void on_thread_attach(Thread* thread);
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virtual void on_thread_detach(Thread* thread);
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static inline oop resolve_forwarded_not_null(oop p);
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static inline oop resolve_forwarded_not_null_mutator(oop p);
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static inline oop resolve_forwarded(oop p);
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template <DecoratorSet decorators, typename T>
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inline void satb_barrier(T* field);
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inline void satb_enqueue(oop value);
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inline void storeval_barrier(oop obj);
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template <DecoratorSet decorators>
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inline void keep_alive_if_weak(oop value);
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inline void keep_alive_if_weak(DecoratorSet decorators, oop value);
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inline void enqueue(oop obj);
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oop load_reference_barrier(oop obj);
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oop load_reference_barrier_not_null(oop obj);
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oop load_reference_barrier_mutator(oop obj, oop* load_addr);
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oop load_reference_barrier_mutator(oop obj, narrowOop* load_addr);
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template <class T>
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oop load_reference_barrier_mutator_work(oop obj, T* load_addr);
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oop load_reference_barrier_native(oop obj, oop* load_addr);
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oop load_reference_barrier_native(oop obj, narrowOop* load_addr);
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private:
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template <class T>
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inline void arraycopy_pre_work(T* src, T* dst, size_t count);
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template <class T, bool HAS_FWD, bool EVAC, bool ENQUEUE>
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inline void arraycopy_work(T* src, size_t count);
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template <class T>
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inline void arraycopy_update_impl(T* src, size_t count);
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oop load_reference_barrier_impl(oop obj);
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template <class T>
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oop load_reference_barrier_native_impl(oop obj, T* load_addr);
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inline bool skip_bulk_update(HeapWord* dst);
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public:
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// Callbacks for runtime accesses.
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template <DecoratorSet decorators, typename BarrierSetT = ShenandoahBarrierSet>
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class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
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typedef BarrierSet::AccessBarrier<decorators, BarrierSetT> Raw;
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public:
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// Heap oop accesses. These accessors get resolved when
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// IN_HEAP is set (e.g. when using the HeapAccess API), it is
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// an oop_* overload, and the barrier strength is AS_NORMAL.
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template <typename T>
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static oop oop_load_in_heap(T* addr);
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static oop oop_load_in_heap_at(oop base, ptrdiff_t offset);
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template <typename T>
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static void oop_store_in_heap(T* addr, oop value);
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static void oop_store_in_heap_at(oop base, ptrdiff_t offset, oop value);
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template <typename T>
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static oop oop_atomic_cmpxchg_in_heap(T* addr, oop compare_value, oop new_value);
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static oop oop_atomic_cmpxchg_in_heap_at(oop base, ptrdiff_t offset, oop compare_value, oop new_value);
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template <typename T>
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static oop oop_atomic_xchg_in_heap(T* addr, oop new_value);
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static oop oop_atomic_xchg_in_heap_at(oop base, ptrdiff_t offset, oop new_value);
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template <typename T>
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static bool oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, T* src_raw,
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arrayOop dst_obj, size_t dst_offset_in_bytes, T* dst_raw,
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size_t length);
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// Clone barrier support
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static void clone_in_heap(oop src, oop dst, size_t size);
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// Needed for loads on non-heap weak references
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template <typename T>
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static oop oop_load_not_in_heap(T* addr);
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// Used for catching bad stores
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template <typename T>
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static void oop_store_not_in_heap(T* addr, oop value);
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template <typename T>
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static oop oop_atomic_cmpxchg_not_in_heap(T* addr, oop compare_value, oop new_value);
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template <typename T>
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static oop oop_atomic_xchg_not_in_heap(T* addr, oop new_value);
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};
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};
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template<>
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struct BarrierSet::GetName<ShenandoahBarrierSet> {
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static const BarrierSet::Name value = BarrierSet::ShenandoahBarrierSet;
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};
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template<>
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struct BarrierSet::GetType<BarrierSet::ShenandoahBarrierSet> {
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typedef ::ShenandoahBarrierSet type;
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};
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#endif // SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSET_HPP
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