author | coleenp |
Thu, 10 Jan 2019 15:13:51 -0500 | |
changeset 53244 | 9807daeb47c4 |
parent 50113 | caf115bb98ad |
child 57870 | 00860d9caf4d |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2016, 2019, 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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*/ |
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#ifndef SHARE_JFR_RECORDER_STORAGE_JFRMEMORYSPACE_HPP |
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#define SHARE_JFR_RECORDER_STORAGE_JFRMEMORYSPACE_HPP |
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#include "jfr/utilities/jfrAllocation.hpp" |
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#include "jfr/utilities/jfrDoublyLinkedList.hpp" |
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#include "jfr/utilities/jfrIterator.hpp" |
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#include "jfr/utilities/jfrTypes.hpp" |
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#include "runtime/os.hpp" |
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#include "utilities/globalDefinitions.hpp" |
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#include "utilities/macros.hpp" |
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template <typename T, template <typename> class RetrievalType, typename Callback> |
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class JfrMemorySpace : public JfrCHeapObj { |
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public: |
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typedef T Type; |
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typedef RetrievalType<JfrMemorySpace<T, RetrievalType, Callback> > Retrieval; |
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typedef JfrDoublyLinkedList<Type> List; |
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typedef StopOnNullIterator<List> Iterator; |
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private: |
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List _free; |
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List _full; |
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size_t _min_elem_size; |
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size_t _limit_size; |
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size_t _cache_count; |
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Callback* _callback; |
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bool should_populate_cache() const { return _free.count() < _cache_count; } |
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public: |
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JfrMemorySpace(size_t min_elem_size, size_t limit_size, size_t cache_count, Callback* callback); |
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~JfrMemorySpace(); |
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bool initialize(); |
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size_t min_elem_size() const { return _min_elem_size; } |
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size_t limit_size() const { return _limit_size; } |
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bool has_full() const { return _full.head() != NULL; } |
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bool has_free() const { return _free.head() != NULL; } |
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bool is_full_empty() const { return !has_full(); } |
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bool is_free_empty() const { return !has_free(); } |
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size_t full_count() const { return _full.count(); } |
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size_t free_count() const { return _free.count(); } |
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List& full() { return _full; } |
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const List& full() const { return _full; } |
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List& free() { return _free; } |
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const List& free() const { return _free; } |
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Type* full_head() { return _full.head(); } |
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Type* full_tail() { return _full.tail(); } |
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Type* free_head() { return _free.head(); } |
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Type* free_tail() { return _free.tail(); } |
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void insert_free_head(Type* t) { _free.prepend(t); } |
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void insert_free_tail(Type* t) { _free.append(t); } |
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void insert_free_tail(Type* t, Type* tail, size_t count) { _free.append_list(t, tail, count); } |
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void insert_full_head(Type* t) { _full.prepend(t); } |
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void insert_full_tail(Type* t) { _full.append(t); } |
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void insert_full_tail(Type* t, Type* tail, size_t count) { _full.append_list(t, tail, count); } |
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Type* remove_free(Type* t) { return _free.remove(t); } |
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Type* remove_full(Type* t) { return _full.remove(t); } |
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Type* remove_free_tail() { _free.remove(_free.tail()); } |
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Type* remove_full_tail() { return _full.remove(_full.tail()); } |
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Type* clear_full(bool return_tail = false) { return _full.clear(return_tail); } |
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Type* clear_free(bool return_tail = false) { return _free.clear(return_tail); } |
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void release_full(Type* t); |
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void release_free(Type* t); |
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void register_full(Type* t, Thread* thread) { _callback->register_full(t, thread); } |
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void lock() { _callback->lock(); } |
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void unlock() { _callback->unlock(); } |
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DEBUG_ONLY(bool is_locked() const { return _callback->is_locked(); }) |
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Type* allocate(size_t size); |
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void deallocate(Type* t); |
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Type* get(size_t size, Thread* thread) { return Retrieval::get(size, this, thread); } |
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template <typename IteratorCallback, typename IteratorType> |
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void iterate(IteratorCallback& callback, bool full = true, jfr_iter_direction direction = forward); |
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debug_only(bool in_full_list(const Type* t) const { return _full.in_list(t); }) |
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debug_only(bool in_free_list(const Type* t) const { return _free.in_list(t); }) |
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}; |
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// allocations are even multiples of the mspace min size |
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inline u8 align_allocation_size(u8 requested_size, size_t min_elem_size) { |
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assert((int)min_elem_size % os::vm_page_size() == 0, "invariant"); |
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u8 alloc_size_bytes = min_elem_size; |
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while (requested_size > alloc_size_bytes) { |
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alloc_size_bytes <<= 1; |
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} |
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assert((int)alloc_size_bytes % os::vm_page_size() == 0, "invariant"); |
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return alloc_size_bytes; |
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} |
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template <typename T, template <typename> class RetrievalType, typename Callback> |
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T* JfrMemorySpace<T, RetrievalType, Callback>::allocate(size_t size) { |
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const u8 aligned_size_bytes = align_allocation_size(size, _min_elem_size); |
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void* const allocation = JfrCHeapObj::new_array<u1>(aligned_size_bytes + sizeof(T)); |
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if (allocation == NULL) { |
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return NULL; |
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} |
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T* const t = new (allocation) T; |
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assert(t != NULL, "invariant"); |
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if (!t->initialize(sizeof(T), aligned_size_bytes)) { |
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JfrCHeapObj::free(t, aligned_size_bytes + sizeof(T)); |
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return NULL; |
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} |
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return t; |
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} |
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template <typename T, template <typename> class RetrievalType, typename Callback> |
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void JfrMemorySpace<T, RetrievalType, Callback>::deallocate(T* t) { |
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assert(t != NULL, "invariant"); |
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assert(!_free.in_list(t), "invariant"); |
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assert(!_full.in_list(t), "invariant"); |
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assert(t != NULL, "invariant"); |
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JfrCHeapObj::free(t, t->total_size()); |
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} |
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template <typename Mspace> |
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class MspaceLock { |
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private: |
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Mspace* _mspace; |
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public: |
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MspaceLock(Mspace* mspace) : _mspace(mspace) { _mspace->lock(); } |
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~MspaceLock() { _mspace->unlock(); } |
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}; |
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template <typename Mspace> |
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class ReleaseOp : public StackObj { |
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private: |
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Mspace* _mspace; |
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Thread* _thread; |
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bool _release_full; |
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public: |
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typedef typename Mspace::Type Type; |
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ReleaseOp(Mspace* mspace, Thread* thread, bool release_full = true) : _mspace(mspace), _thread(thread), _release_full(release_full) {} |
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bool process(Type* t); |
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size_t processed() const { return 0; } |
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}; |
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53244
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coleenp
parents:
50113
diff
changeset
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#endif // SHARE_JFR_RECORDER_STORAGE_JFRMEMORYSPACE_HPP |