author | pliden |
Mon, 13 Aug 2018 14:04:42 +0200 | |
changeset 51394 | 8ed5f86b15aa |
parent 51346 | d98f2adf09c9 |
child 51395 | f3cf91d5373f |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2016, 2018, Oracle and/or its affiliates. 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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#ifndef SHARE_GC_Z_ZMARKSTACK_HPP |
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#define SHARE_GC_Z_ZMARKSTACK_HPP |
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#include "gc/z/zGlobals.hpp" |
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#include "gc/z/zLock.hpp" |
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#include "gc/z/zMarkStackEntry.hpp" |
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#include "memory/allocation.hpp" |
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#include "utilities/globalDefinitions.hpp" |
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template <typename T, size_t S> |
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class ZStack { |
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private: |
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size_t _top; |
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ZStack<T, S>* _next; |
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T _slots[S]; |
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bool is_full() const; |
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ZStack(); |
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bool is_empty() const; |
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bool push(T value); |
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bool pop(T& value); |
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ZStack<T, S>* next() const; |
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ZStack<T, S>** next_addr(); |
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}; |
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template <typename T> |
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class ZStackList { |
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private: |
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T* volatile _head; |
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T* encode_versioned_pointer(const T* stack, uint32_t version) const; |
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void decode_versioned_pointer(const T* vstack, T** stack, uint32_t* version) const; |
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public: |
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ZStackList(); |
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bool is_empty() const; |
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void push_atomic(T* stack); |
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T* pop_atomic(); |
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}; |
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typedef ZStack<ZMarkStackEntry, ZMarkStackSlots> ZMarkStack; |
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typedef ZStackList<ZMarkStack> ZMarkStackList; |
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typedef ZStack<ZMarkStack*, ZMarkStackMagazineSlots> ZMarkStackMagazine; |
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typedef ZStackList<ZMarkStackMagazine> ZMarkStackMagazineList; |
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class ZMarkStackSpace { |
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private: |
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ZLock _expand_lock; |
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uintptr_t _start; |
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volatile uintptr_t _top; |
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volatile uintptr_t _end; |
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void expand(); |
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uintptr_t alloc_space(size_t size); |
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uintptr_t expand_and_alloc_space(size_t size); |
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public: |
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ZMarkStackSpace(); |
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bool is_initialized() const; |
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uintptr_t alloc(size_t size); |
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}; |
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class ZMarkStackAllocator { |
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ZMarkStackMagazineList _freelist ATTRIBUTE_ALIGNED(ZCacheLineSize); |
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ZMarkStackSpace _space ATTRIBUTE_ALIGNED(ZCacheLineSize); |
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void prime_freelist(); |
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ZMarkStackMagazine* create_magazine_from_space(uintptr_t addr, size_t size); |
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public: |
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ZMarkStackAllocator(); |
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bool is_initialized() const; |
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ZMarkStackMagazine* alloc_magazine(); |
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void free_magazine(ZMarkStackMagazine* magazine); |
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}; |
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class ZMarkStripe { |
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ZMarkStackList _published ATTRIBUTE_ALIGNED(ZCacheLineSize); |
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ZMarkStackList _overflowed ATTRIBUTE_ALIGNED(ZCacheLineSize); |
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public: |
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ZMarkStripe(); |
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bool is_empty() const; |
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void publish_stack(ZMarkStack* stack, bool publish = true); |
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ZMarkStack* steal_stack(); |
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}; |
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class ZMarkStripeSet { |
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private: |
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size_t _nstripes; |
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size_t _nstripes_mask; |
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ZMarkStripe _stripes[ZMarkStripesMax]; |
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public: |
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ZMarkStripeSet(); |
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size_t nstripes() const; |
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void set_nstripes(size_t nstripes); |
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bool is_empty() const; |
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size_t stripe_id(const ZMarkStripe* stripe) const; |
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ZMarkStripe* stripe_at(size_t index); |
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ZMarkStripe* stripe_next(ZMarkStripe* stripe); |
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ZMarkStripe* stripe_for_worker(uint nworkers, uint worker_id); |
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ZMarkStripe* stripe_for_addr(uintptr_t addr); |
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}; |
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class ZMarkThreadLocalStacks { |
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private: |
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ZMarkStackMagazine* _magazine; |
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ZMarkStack* _stacks[ZMarkStripesMax]; |
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ZMarkStack* allocate_stack(ZMarkStackAllocator* allocator); |
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void free_stack(ZMarkStackAllocator* allocator, ZMarkStack* stack); |
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bool push_slow(ZMarkStackAllocator* allocator, |
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ZMarkStripe* stripe, |
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ZMarkStack** stackp, |
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ZMarkStackEntry entry, |
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bool publish); |
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bool pop_slow(ZMarkStackAllocator* allocator, |
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ZMarkStripe* stripe, |
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ZMarkStack** stackp, |
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ZMarkStackEntry& entry); |
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ZMarkThreadLocalStacks(); |
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bool is_empty(const ZMarkStripeSet* stripes) const; |
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void install(ZMarkStripeSet* stripes, |
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ZMarkStripe* stripe, |
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ZMarkStack* stack); |
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bool push(ZMarkStackAllocator* allocator, |
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ZMarkStripeSet* stripes, |
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ZMarkStripe* stripe, |
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ZMarkStackEntry entry, |
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bool publish); |
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bool pop(ZMarkStackAllocator* allocator, |
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ZMarkStripeSet* stripes, |
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ZMarkStripe* stripe, |
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ZMarkStackEntry& entry); |
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bool flush(ZMarkStackAllocator* allocator, |
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ZMarkStripeSet* stripes); |
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void free(ZMarkStackAllocator* allocator); |
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}; |
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#endif // SHARE_GC_Z_ZMARKSTACK_HPP |