author | kbarrett |
Wed, 13 Nov 2019 18:00:30 -0500 | |
changeset 59067 | f080b08daace |
parent 59062 | 6530de931b8e |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 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_VM_GC_G1_NUMA_HPP |
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#define SHARE_VM_GC_G1_NUMA_HPP |
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#include "gc/g1/g1NUMAStats.hpp" |
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#include "gc/g1/heapRegion.hpp" |
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#include "memory/allocation.hpp" |
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#include "runtime/os.hpp" |
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class LogStream; |
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class G1NUMA: public CHeapObj<mtGC> { |
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// Mapping of available node ids to 0-based index which can be used for |
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// fast resource management. I.e. for every node id provides a unique value in |
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// the range from [0, {# of nodes-1}]. |
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// For invalid node id, return UnknownNodeIndex. |
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uint* _node_id_to_index_map; |
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// Length of _num_active_node_ids_id to index map. |
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int _len_node_id_to_index_map; |
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// Current active node ids. |
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int* _node_ids; |
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// Total number of node ids. |
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uint _num_active_node_ids; |
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// HeapRegion size |
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size_t _region_size; |
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// Necessary when touching memory. |
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size_t _page_size; |
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// Stores statistic data. |
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G1NUMAStats* _stats; |
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size_t region_size() const; |
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size_t page_size() const; |
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// Returns node index of the given node id. |
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// Precondition: node_id is an active node id. |
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inline uint index_of_node_id(int node_id) const; |
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// Creates node id and node index mapping table of _node_id_to_index_map. |
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void init_node_id_to_index_map(const int* node_ids, uint num_node_ids); |
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static G1NUMA* _inst; |
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G1NUMA(); |
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void initialize(bool use_numa); |
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void initialize_without_numa(); |
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public: |
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static const uint UnknownNodeIndex = UINT_MAX; |
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static const uint AnyNodeIndex = UnknownNodeIndex - 1; |
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static G1NUMA* numa() { return _inst; } |
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static G1NUMA* create(); |
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~G1NUMA(); |
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// Sets heap region size and page size after those values |
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// are determined at G1CollectedHeap::initialize(). |
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void set_region_info(size_t region_size, size_t page_size); |
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// Returns active memory node count. |
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uint num_active_nodes() const; |
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bool is_enabled() const; |
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int numa_id(int index) const; |
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// Returns memory node ids |
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const int* node_ids() const; |
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// Returns node index of current calling thread. |
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uint index_of_current_thread() const; |
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// Returns the preferred index for the given HeapRegion index. |
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// This assumes that HeapRegions are evenly spit, so we can decide preferred index |
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// with the given HeapRegion index. |
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// Result is less than num_active_nodes(). |
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uint preferred_node_index_for_index(uint region_index) const; |
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// Retrieves node index of the given address. |
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// Result is less than num_active_nodes() or is UnknownNodeIndex. |
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// Precondition: address is in reserved range for heap. |
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uint index_of_address(HeapWord* address) const; |
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// If AlwaysPreTouch is enabled, return actual node index via system call. |
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// If disabled, return preferred node index of the given heap region. |
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uint index_for_region(HeapRegion* hr) const; |
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// Requests the given memory area to be located at the given node index. |
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void request_memory_on_node(void* aligned_address, size_t size_in_bytes, uint region_index); |
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// Returns maximum search depth which is used to limit heap region search iterations. |
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// The number of active nodes, page size and heap region size are considered. |
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uint max_search_depth() const; |
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// Update the given phase of requested and allocated node index. |
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void update_statistics(G1NUMAStats::NodeDataItems phase, uint requested_node_index, uint allocated_node_index); |
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// Copy all allocated statistics of the given phase and requested node. |
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// Precondition: allocated_stat should have same length of active nodes. |
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void copy_statistics(G1NUMAStats::NodeDataItems phase, uint requested_node_index, size_t* allocated_stat); |
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// Print all statistics. |
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void print_statistics() const; |
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}; |
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class G1NodeIndexCheckClosure : public HeapRegionClosure { |
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const char* _desc; |
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G1NUMA* _numa; |
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// Records matched count of each node. |
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uint* _matched; |
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// Records mismatched count of each node. |
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uint* _mismatched; |
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// Records total count of each node. |
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// Total = matched + mismatched + unknown. |
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uint* _total; |
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LogStream* _ls; |
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public: |
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G1NodeIndexCheckClosure(const char* desc, G1NUMA* numa, LogStream* ls); |
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~G1NodeIndexCheckClosure(); |
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bool do_heap_region(HeapRegion* hr); |
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}; |
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#endif // SHARE_VM_GC_G1_NUMA_HPP |