| /* |
| * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #ifndef SHARE_GC_Z_ZVALUE_HPP |
| #define SHARE_GC_Z_ZVALUE_HPP |
| |
| #include "memory/allocation.hpp" |
| #include "gc/z/zCPU.hpp" |
| #include "gc/z/zGlobals.hpp" |
| #include "gc/z/zNUMA.hpp" |
| #include "gc/z/zThread.hpp" |
| #include "gc/z/zUtils.hpp" |
| #include "utilities/align.hpp" |
| |
| template <typename S> |
| class ZValueStorage : public AllStatic { |
| private: |
| static uintptr_t _top; |
| static uintptr_t _end; |
| |
| public: |
| static const size_t offset = 4 * K; |
| |
| static uintptr_t alloc(size_t size) { |
| guarantee(size <= offset, "Allocation too large"); |
| |
| // Allocate entry in existing memory block |
| const uintptr_t addr = align_up(_top, S::alignment()); |
| _top = addr + size; |
| |
| if (_top < _end) { |
| // Success |
| return addr; |
| } |
| |
| // Allocate new block of memory |
| const size_t block_alignment = offset; |
| const size_t block_size = offset * S::count(); |
| _top = ZUtils::alloc_aligned(block_alignment, block_size); |
| _end = _top + offset; |
| |
| // Retry allocation |
| return alloc(size); |
| } |
| }; |
| |
| template <typename T> uintptr_t ZValueStorage<T>::_end = 0; |
| template <typename T> uintptr_t ZValueStorage<T>::_top = 0; |
| |
| class ZContendedStorage : public ZValueStorage<ZContendedStorage> { |
| public: |
| static size_t alignment() { |
| return ZCacheLineSize; |
| } |
| |
| static uint32_t count() { |
| return 1; |
| } |
| |
| static uint32_t id() { |
| return 0; |
| } |
| }; |
| |
| class ZPerCPUStorage : public ZValueStorage<ZPerCPUStorage> { |
| public: |
| static size_t alignment() { |
| return sizeof(uintptr_t); |
| } |
| |
| static uint32_t count() { |
| return ZCPU::count(); |
| } |
| |
| static uint32_t id() { |
| return ZCPU::id(); |
| } |
| }; |
| |
| class ZPerNUMAStorage : public ZValueStorage<ZPerNUMAStorage> { |
| public: |
| static size_t alignment() { |
| return sizeof(uintptr_t); |
| } |
| |
| static uint32_t count() { |
| return ZNUMA::count(); |
| } |
| |
| static uint32_t id() { |
| return ZNUMA::id(); |
| } |
| }; |
| |
| class ZPerWorkerStorage : public ZValueStorage<ZPerWorkerStorage> { |
| public: |
| static size_t alignment() { |
| return sizeof(uintptr_t); |
| } |
| |
| static uint32_t count() { |
| return MAX2(ParallelGCThreads, ConcGCThreads); |
| } |
| |
| static uint32_t id() { |
| return ZThread::worker_id(); |
| } |
| }; |
| |
| template <typename S, typename T> |
| class ZValueIterator; |
| |
| template <typename S, typename T> |
| class ZValue { |
| private: |
| const uintptr_t _addr; |
| |
| uintptr_t value_addr(uint32_t value_id) const { |
| return _addr + (value_id * S::offset); |
| } |
| |
| public: |
| ZValue() : |
| _addr(S::alloc(sizeof(T))) { |
| // Initialize all instances |
| ZValueIterator<S, T> iter(this); |
| for (T* addr; iter.next(&addr);) { |
| ::new (addr) T; |
| } |
| } |
| |
| ZValue(const T& value) : |
| _addr(S::alloc(sizeof(T))) { |
| // Initialize all instances |
| ZValueIterator<S, T> iter(this); |
| for (T* addr; iter.next(&addr);) { |
| ::new (addr) T(value); |
| } |
| } |
| |
| // Not implemented |
| ZValue(const ZValue<S, T>& value); |
| ZValue<S, T>& operator=(const ZValue<S, T>& value); |
| |
| const T* addr(uint32_t value_id = S::id()) const { |
| return reinterpret_cast<const T*>(value_addr(value_id)); |
| } |
| |
| T* addr(uint32_t value_id = S::id()) { |
| return reinterpret_cast<T*>(value_addr(value_id)); |
| } |
| |
| const T& get(uint32_t value_id = S::id()) const { |
| return *addr(value_id); |
| } |
| |
| T& get(uint32_t value_id = S::id()) { |
| return *addr(value_id); |
| } |
| |
| void set(const T& value, uint32_t value_id = S::id()) { |
| get(value_id) = value; |
| } |
| |
| void set_all(const T& value) { |
| ZValueIterator<S, T> iter(this); |
| for (T* addr; iter.next(&addr);) { |
| *addr = value; |
| } |
| } |
| }; |
| |
| template <typename T> |
| class ZContended : public ZValue<ZContendedStorage, T> { |
| public: |
| ZContended() : |
| ZValue<ZContendedStorage, T>() {} |
| |
| ZContended(const T& value) : |
| ZValue<ZContendedStorage, T>(value) {} |
| |
| using ZValue<ZContendedStorage, T>::operator=; |
| }; |
| |
| template <typename T> |
| class ZPerCPU : public ZValue<ZPerCPUStorage, T> { |
| public: |
| ZPerCPU() : |
| ZValue<ZPerCPUStorage, T>() {} |
| |
| ZPerCPU(const T& value) : |
| ZValue<ZPerCPUStorage, T>(value) {} |
| |
| using ZValue<ZPerCPUStorage, T>::operator=; |
| }; |
| |
| template <typename T> |
| class ZPerNUMA : public ZValue<ZPerNUMAStorage, T> { |
| public: |
| ZPerNUMA() : |
| ZValue<ZPerNUMAStorage, T>() {} |
| |
| ZPerNUMA(const T& value) : |
| ZValue<ZPerNUMAStorage, T>(value) {} |
| |
| using ZValue<ZPerNUMAStorage, T>::operator=; |
| }; |
| |
| template <typename T> |
| class ZPerWorker : public ZValue<ZPerWorkerStorage, T> { |
| public: |
| ZPerWorker() : |
| ZValue<ZPerWorkerStorage, T>() {} |
| |
| ZPerWorker(const T& value) : |
| ZValue<ZPerWorkerStorage, T>(value) {} |
| |
| using ZValue<ZPerWorkerStorage, T>::operator=; |
| }; |
| |
| template <typename S, typename T> |
| class ZValueIterator { |
| private: |
| ZValue<S, T>* const _value; |
| uint32_t _value_id; |
| |
| public: |
| ZValueIterator(ZValue<S, T>* value) : |
| _value(value), |
| _value_id(0) {} |
| |
| bool next(T** value) { |
| if (_value_id < S::count()) { |
| *value = _value->addr(_value_id++); |
| return true; |
| } |
| return false; |
| } |
| }; |
| |
| template <typename T> |
| class ZPerCPUIterator : public ZValueIterator<ZPerCPUStorage, T> { |
| public: |
| ZPerCPUIterator(ZPerCPU<T>* value) : |
| ZValueIterator<ZPerCPUStorage, T>(value) {} |
| }; |
| |
| template <typename T> |
| class ZPerNUMAIterator : public ZValueIterator<ZPerNUMAStorage, T> { |
| public: |
| ZPerNUMAIterator(ZPerNUMA<T>* value) : |
| ZValueIterator<ZPerNUMAStorage, T>(value) {} |
| }; |
| |
| template <typename T> |
| class ZPerWorkerIterator : public ZValueIterator<ZPerWorkerStorage, T> { |
| public: |
| ZPerWorkerIterator(ZPerWorker<T>* value) : |
| ZValueIterator<ZPerWorkerStorage, T>(value) {} |
| }; |
| |
| template <typename S, typename T> |
| class ZValueConstIterator { |
| private: |
| const ZValue<S, T>* const _value; |
| uint32_t _value_id; |
| |
| public: |
| ZValueConstIterator(const ZValue<S, T>* value) : |
| _value(value), |
| _value_id(0) {} |
| |
| bool next(const T** value) { |
| if (_value_id < S::count()) { |
| *value = _value->addr(_value_id++); |
| return true; |
| } |
| return false; |
| } |
| }; |
| |
| template <typename T> |
| class ZPerCPUConstIterator : public ZValueConstIterator<ZPerCPUStorage, T> { |
| public: |
| ZPerCPUConstIterator(const ZPerCPU<T>* value) : |
| ZValueConstIterator<ZPerCPUStorage, T>(value) {} |
| }; |
| |
| template <typename T> |
| class ZPerNUMAConstIterator : public ZValueConstIterator<ZPerNUMAStorage, T> { |
| public: |
| ZPerNUMAConstIterator(const ZPerNUMA<T>* value) : |
| ZValueConstIterator<ZPerNUMAStorage, T>(value) {} |
| }; |
| |
| template <typename T> |
| class ZPerWorkerConstIterator : public ZValueConstIterator<ZPerWorkerStorage, T> { |
| public: |
| ZPerWorkerConstIterator(const ZPerWorker<T>* value) : |
| ZValueConstIterator<ZPerWorkerStorage, T>(value) {} |
| }; |
| |
| #endif // SHARE_GC_Z_ZVALUE_HPP |