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8025096: Move the ChunkManager instances out of the VirtualSpaceLists
Reviewed-by: coleenp, mgerdin, jmasa
This commit is contained in:
Stefan Karlsson
parent
bbb009b580
commit
22272f5043
2 changed files with 116 additions and 127 deletions
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@ -23,6 +23,7 @@
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*/
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#include "precompiled.hpp"
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#include "gc_interface/collectedHeap.hpp"
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#include "memory/allocation.hpp"
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#include "memory/binaryTreeDictionary.hpp"
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#include "memory/freeList.hpp"
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#include "memory/collectorPolicy.hpp"
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@ -111,7 +112,7 @@ typedef class FreeList<Metachunk> ChunkList;
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// Has three lists of free chunks, and a total size and
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// count that includes all three
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class ChunkManager VALUE_OBJ_CLASS_SPEC {
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class ChunkManager : public CHeapObj<mtInternal> {
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// Free list of chunks of different sizes.
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// SpecializedChunk
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@ -158,7 +159,12 @@ class ChunkManager VALUE_OBJ_CLASS_SPEC {
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public:
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ChunkManager() : _free_chunks_total(0), _free_chunks_count(0) {}
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ChunkManager(size_t specialized_size, size_t small_size, size_t medium_size)
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: _free_chunks_total(0), _free_chunks_count(0) {
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_free_chunks[SpecializedIndex].set_size(specialized_size);
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_free_chunks[SmallIndex].set_size(small_size);
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_free_chunks[MediumIndex].set_size(medium_size);
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}
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// add or delete (return) a chunk to the global freelist.
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Metachunk* chunk_freelist_allocate(size_t word_size);
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@ -219,7 +225,7 @@ class ChunkManager VALUE_OBJ_CLASS_SPEC {
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void locked_print_free_chunks(outputStream* st);
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void locked_print_sum_free_chunks(outputStream* st);
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void print_on(outputStream* st);
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void print_on(outputStream* st) const;
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};
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// Used to manage the free list of Metablocks (a block corresponds
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@ -276,11 +282,6 @@ class VirtualSpaceNode : public CHeapObj<mtClass> {
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// VirtualSpace
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Metachunk* first_chunk() { return (Metachunk*) bottom(); }
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void inc_container_count();
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#ifdef ASSERT
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uint container_count_slow();
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#endif
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public:
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VirtualSpaceNode(size_t byte_size);
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@ -314,8 +315,10 @@ class VirtualSpaceNode : public CHeapObj<mtClass> {
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void inc_top(size_t word_size) { _top += word_size; }
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uintx container_count() { return _container_count; }
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void inc_container_count();
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void dec_container_count();
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#ifdef ASSERT
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uint container_count_slow();
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void verify_container_count();
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#endif
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@ -421,8 +424,6 @@ class VirtualSpaceList : public CHeapObj<mtClass> {
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VirtualSpaceNode* _virtual_space_list;
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// virtual space currently being used for allocations
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VirtualSpaceNode* _current_virtual_space;
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// Free chunk list for all other metadata
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ChunkManager _chunk_manager;
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// Can this virtual list allocate >1 spaces? Also, used to determine
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// whether to allocate unlimited small chunks in this virtual space
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@ -475,7 +476,6 @@ class VirtualSpaceList : public CHeapObj<mtClass> {
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return _current_virtual_space;
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}
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ChunkManager* chunk_manager() { return &_chunk_manager; }
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bool is_class() const { return _is_class; }
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// Allocate the first virtualspace.
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@ -494,14 +494,7 @@ class VirtualSpaceList : public CHeapObj<mtClass> {
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void dec_virtual_space_count();
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// Unlink empty VirtualSpaceNodes and free it.
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void purge();
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// Used and capacity in the entire list of virtual spaces.
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// These are global values shared by all Metaspaces
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size_t capacity_words_sum();
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size_t capacity_bytes_sum() { return capacity_words_sum() * BytesPerWord; }
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size_t used_words_sum();
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size_t used_bytes_sum() { return used_words_sum() * BytesPerWord; }
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void purge(ChunkManager* chunk_manager);
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bool contains(const void *ptr);
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@ -582,18 +575,12 @@ class SpaceManager : public CHeapObj<mtClass> {
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// Type of metadata allocated.
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Metaspace::MetadataType _mdtype;
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// Chunk related size
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size_t _medium_chunk_bunch;
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// List of chunks in use by this SpaceManager. Allocations
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// are done from the current chunk. The list is used for deallocating
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// chunks when the SpaceManager is freed.
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Metachunk* _chunks_in_use[NumberOfInUseLists];
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Metachunk* _current_chunk;
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// Virtual space where allocation comes from.
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VirtualSpaceList* _vs_list;
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// Number of small chunks to allocate to a manager
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// If class space manager, small chunks are unlimited
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static uint const _small_chunk_limit;
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@ -626,7 +613,9 @@ class SpaceManager : public CHeapObj<mtClass> {
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}
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Metaspace::MetadataType mdtype() { return _mdtype; }
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VirtualSpaceList* vs_list() const { return _vs_list; }
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VirtualSpaceList* vs_list() const { return Metaspace::get_space_list(_mdtype); }
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ChunkManager* chunk_manager() const { return Metaspace::get_chunk_manager(_mdtype); }
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Metachunk* current_chunk() const { return _current_chunk; }
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void set_current_chunk(Metachunk* v) {
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@ -648,18 +637,19 @@ class SpaceManager : public CHeapObj<mtClass> {
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public:
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SpaceManager(Metaspace::MetadataType mdtype,
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Mutex* lock,
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VirtualSpaceList* vs_list);
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Mutex* lock);
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~SpaceManager();
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enum ChunkMultiples {
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MediumChunkMultiple = 4
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};
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bool is_class() { return _mdtype == Metaspace::ClassType; }
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// Accessors
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size_t specialized_chunk_size() { return SpecializedChunk; }
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size_t small_chunk_size() { return (size_t) vs_list()->is_class() ? ClassSmallChunk : SmallChunk; }
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size_t medium_chunk_size() { return (size_t) vs_list()->is_class() ? ClassMediumChunk : MediumChunk; }
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size_t small_chunk_size() { return (size_t) is_class() ? ClassSmallChunk : SmallChunk; }
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size_t medium_chunk_size() { return (size_t) is_class() ? ClassMediumChunk : MediumChunk; }
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size_t medium_chunk_bunch() { return medium_chunk_size() * MediumChunkMultiple; }
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size_t allocated_blocks_words() const { return _allocated_blocks_words; }
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@ -762,7 +752,7 @@ void VirtualSpaceNode::inc_container_count() {
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_container_count++;
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assert(_container_count == container_count_slow(),
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err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT
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"container_count_slow() " SIZE_FORMAT,
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" container_count_slow() " SIZE_FORMAT,
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_container_count, container_count_slow()));
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}
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@ -775,7 +765,7 @@ void VirtualSpaceNode::dec_container_count() {
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void VirtualSpaceNode::verify_container_count() {
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assert(_container_count == container_count_slow(),
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err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT
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"container_count_slow() " SIZE_FORMAT, _container_count, container_count_slow()));
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" container_count_slow() " SIZE_FORMAT, _container_count, container_count_slow()));
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}
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#endif
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@ -1020,7 +1010,7 @@ void ChunkManager::remove_chunk(Metachunk* chunk) {
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// Walk the list of VirtualSpaceNodes and delete
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// nodes with a 0 container_count. Remove Metachunks in
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// the node from their respective freelists.
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void VirtualSpaceList::purge() {
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void VirtualSpaceList::purge(ChunkManager* chunk_manager) {
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assert_lock_strong(SpaceManager::expand_lock());
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// Don't use a VirtualSpaceListIterator because this
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// list is being changed and a straightforward use of an iterator is not safe.
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@ -1042,7 +1032,7 @@ void VirtualSpaceList::purge() {
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prev_vsl->set_next(vsl->next());
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}
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vsl->purge(chunk_manager());
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vsl->purge(chunk_manager);
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dec_reserved_words(vsl->reserved_words());
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dec_committed_words(vsl->committed_words());
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dec_virtual_space_count();
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@ -1064,36 +1054,6 @@ void VirtualSpaceList::purge() {
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#endif
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}
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size_t VirtualSpaceList::used_words_sum() {
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size_t allocated_by_vs = 0;
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VirtualSpaceListIterator iter(virtual_space_list());
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while (iter.repeat()) {
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VirtualSpaceNode* vsl = iter.get_next();
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// Sum used region [bottom, top) in each virtualspace
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allocated_by_vs += vsl->used_words_in_vs();
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}
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assert(allocated_by_vs >= chunk_manager()->free_chunks_total_words(),
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err_msg("Total in free chunks " SIZE_FORMAT
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" greater than total from virtual_spaces " SIZE_FORMAT,
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allocated_by_vs, chunk_manager()->free_chunks_total_words()));
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size_t used =
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allocated_by_vs - chunk_manager()->free_chunks_total_words();
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return used;
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}
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// Space available in all MetadataVirtualspaces allocated
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// for metadata. This is the upper limit on the capacity
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// of chunks allocated out of all the MetadataVirtualspaces.
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size_t VirtualSpaceList::capacity_words_sum() {
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size_t capacity = 0;
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VirtualSpaceListIterator iter(virtual_space_list());
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while (iter.repeat()) {
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VirtualSpaceNode* vsl = iter.get_next();
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capacity += vsl->capacity_words_in_vs();
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}
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return capacity;
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}
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VirtualSpaceList::VirtualSpaceList(size_t word_size ) :
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_is_class(false),
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_virtual_space_list(NULL),
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@ -1104,10 +1064,6 @@ VirtualSpaceList::VirtualSpaceList(size_t word_size ) :
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MutexLockerEx cl(SpaceManager::expand_lock(),
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Mutex::_no_safepoint_check_flag);
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bool initialization_succeeded = grow_vs(word_size);
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_chunk_manager.free_chunks(SpecializedIndex)->set_size(SpecializedChunk);
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_chunk_manager.free_chunks(SmallIndex)->set_size(SmallChunk);
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_chunk_manager.free_chunks(MediumIndex)->set_size(MediumChunk);
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assert(initialization_succeeded,
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" VirtualSpaceList initialization should not fail");
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}
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@ -1123,9 +1079,6 @@ VirtualSpaceList::VirtualSpaceList(ReservedSpace rs) :
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Mutex::_no_safepoint_check_flag);
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VirtualSpaceNode* class_entry = new VirtualSpaceNode(rs);
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bool succeeded = class_entry->initialize();
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_chunk_manager.free_chunks(SpecializedIndex)->set_size(SpecializedChunk);
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_chunk_manager.free_chunks(SmallIndex)->set_size(ClassSmallChunk);
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_chunk_manager.free_chunks(MediumIndex)->set_size(ClassMediumChunk);
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assert(succeeded, " VirtualSpaceList initialization should not fail");
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link_vs(class_entry);
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}
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@ -1195,15 +1148,8 @@ Metachunk* VirtualSpaceList::get_new_chunk(size_t word_size,
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size_t grow_chunks_by_words,
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size_t medium_chunk_bunch) {
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// Get a chunk from the chunk freelist
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Metachunk* next = chunk_manager()->chunk_freelist_allocate(grow_chunks_by_words);
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if (next != NULL) {
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next->container()->inc_container_count();
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} else {
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// Allocate a chunk out of the current virtual space.
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next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words);
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}
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// Allocate a chunk out of the current virtual space.
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Metachunk* next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words);
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if (next == NULL) {
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// Not enough room in current virtual space. Try to commit
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@ -1537,15 +1483,15 @@ void Metadebug::deallocate_chunk_a_lot(SpaceManager* sm,
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if (dummy_chunk == NULL) {
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break;
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}
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vsl->chunk_manager()->chunk_freelist_deallocate(dummy_chunk);
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sm->chunk_manager()->chunk_freelist_deallocate(dummy_chunk);
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if (TraceMetadataChunkAllocation && Verbose) {
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gclog_or_tty->print("Metadebug::deallocate_chunk_a_lot: %d) ",
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sm->sum_count_in_chunks_in_use());
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dummy_chunk->print_on(gclog_or_tty);
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gclog_or_tty->print_cr(" Free chunks total %d count %d",
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vsl->chunk_manager()->free_chunks_total_words(),
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vsl->chunk_manager()->free_chunks_count());
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sm->chunk_manager()->free_chunks_total_words(),
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sm->chunk_manager()->free_chunks_count());
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}
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}
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} else {
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@ -1797,6 +1743,8 @@ Metachunk* ChunkManager::free_chunks_get(size_t word_size) {
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// work.
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chunk->set_is_free(false);
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#endif
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chunk->container()->inc_container_count();
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slow_locked_verify();
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return chunk;
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}
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@ -1831,9 +1779,9 @@ Metachunk* ChunkManager::chunk_freelist_allocate(size_t word_size) {
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return chunk;
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}
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void ChunkManager::print_on(outputStream* out) {
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void ChunkManager::print_on(outputStream* out) const {
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if (PrintFLSStatistics != 0) {
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humongous_dictionary()->report_statistics();
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const_cast<ChunkManager *>(this)->humongous_dictionary()->report_statistics();
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}
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}
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@ -1980,8 +1928,8 @@ void SpaceManager::locked_print_chunks_in_use_on(outputStream* st) const {
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}
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}
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vs_list()->chunk_manager()->locked_print_free_chunks(st);
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vs_list()->chunk_manager()->locked_print_sum_free_chunks(st);
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chunk_manager()->locked_print_free_chunks(st);
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chunk_manager()->locked_print_sum_free_chunks(st);
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}
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size_t SpaceManager::calc_chunk_size(size_t word_size) {
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@ -2085,9 +2033,7 @@ void SpaceManager::print_on(outputStream* st) const {
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}
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SpaceManager::SpaceManager(Metaspace::MetadataType mdtype,
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Mutex* lock,
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VirtualSpaceList* vs_list) :
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_vs_list(vs_list),
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Mutex* lock) :
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_mdtype(mdtype),
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_allocated_blocks_words(0),
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_allocated_chunks_words(0),
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@ -2173,9 +2119,7 @@ SpaceManager::~SpaceManager() {
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MutexLockerEx fcl(SpaceManager::expand_lock(),
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Mutex::_no_safepoint_check_flag);
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ChunkManager* chunk_manager = vs_list()->chunk_manager();
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chunk_manager->slow_locked_verify();
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chunk_manager()->slow_locked_verify();
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dec_total_from_size_metrics();
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@ -2189,8 +2133,8 @@ SpaceManager::~SpaceManager() {
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// Have to update before the chunks_in_use lists are emptied
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// below.
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chunk_manager->inc_free_chunks_total(allocated_chunks_words(),
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sum_count_in_chunks_in_use());
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chunk_manager()->inc_free_chunks_total(allocated_chunks_words(),
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sum_count_in_chunks_in_use());
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// Add all the chunks in use by this space manager
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// to the global list of free chunks.
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@ -2205,11 +2149,11 @@ SpaceManager::~SpaceManager() {
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chunk_size_name(i));
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}
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Metachunk* chunks = chunks_in_use(i);
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chunk_manager->return_chunks(i, chunks);
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chunk_manager()->return_chunks(i, chunks);
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set_chunks_in_use(i, NULL);
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if (TraceMetadataChunkAllocation && Verbose) {
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gclog_or_tty->print_cr("updated freelist count %d %s",
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chunk_manager->free_chunks(i)->count(),
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chunk_manager()->free_chunks(i)->count(),
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chunk_size_name(i));
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}
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assert(i != HumongousIndex, "Humongous chunks are handled explicitly later");
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@ -2246,16 +2190,16 @@ SpaceManager::~SpaceManager() {
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humongous_chunks->word_size(), HumongousChunkGranularity));
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Metachunk* next_humongous_chunks = humongous_chunks->next();
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humongous_chunks->container()->dec_container_count();
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chunk_manager->humongous_dictionary()->return_chunk(humongous_chunks);
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chunk_manager()->humongous_dictionary()->return_chunk(humongous_chunks);
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humongous_chunks = next_humongous_chunks;
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}
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if (TraceMetadataChunkAllocation && Verbose) {
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gclog_or_tty->print_cr("");
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gclog_or_tty->print_cr("updated dictionary count %d %s",
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chunk_manager->humongous_dictionary()->total_count(),
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chunk_manager()->humongous_dictionary()->total_count(),
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chunk_size_name(HumongousIndex));
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}
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chunk_manager->slow_locked_verify();
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chunk_manager()->slow_locked_verify();
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}
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const char* SpaceManager::chunk_size_name(ChunkIndex index) const {
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@ -2344,9 +2288,7 @@ void SpaceManager::add_chunk(Metachunk* new_chunk, bool make_current) {
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gclog_or_tty->print("SpaceManager::add_chunk: %d) ",
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sum_count_in_chunks_in_use());
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new_chunk->print_on(gclog_or_tty);
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if (vs_list() != NULL) {
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vs_list()->chunk_manager()->locked_print_free_chunks(gclog_or_tty);
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}
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chunk_manager()->locked_print_free_chunks(gclog_or_tty);
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}
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}
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@ -2362,10 +2304,14 @@ void SpaceManager::retire_current_chunk() {
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Metachunk* SpaceManager::get_new_chunk(size_t word_size,
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size_t grow_chunks_by_words) {
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// Get a chunk from the chunk freelist
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Metachunk* next = chunk_manager()->chunk_freelist_allocate(grow_chunks_by_words);
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Metachunk* next = vs_list()->get_new_chunk(word_size,
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grow_chunks_by_words,
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medium_chunk_bunch());
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if (next == NULL) {
|
||||
next = vs_list()->get_new_chunk(word_size,
|
||||
grow_chunks_by_words,
|
||||
medium_chunk_bunch());
|
||||
}
|
||||
|
||||
if (TraceMetadataHumongousAllocation && next != NULL &&
|
||||
SpaceManager::is_humongous(next->word_size())) {
|
||||
|
|
@ -2645,13 +2591,12 @@ size_t MetaspaceAux::committed_bytes(Metaspace::MetadataType mdtype) {
|
|||
size_t MetaspaceAux::min_chunk_size_words() { return Metaspace::first_chunk_word_size(); }
|
||||
|
||||
size_t MetaspaceAux::free_chunks_total_words(Metaspace::MetadataType mdtype) {
|
||||
VirtualSpaceList* list = Metaspace::get_space_list(mdtype);
|
||||
if (list == NULL) {
|
||||
ChunkManager* chunk_manager = Metaspace::get_chunk_manager(mdtype);
|
||||
if (chunk_manager == NULL) {
|
||||
return 0;
|
||||
}
|
||||
ChunkManager* chunk = list->chunk_manager();
|
||||
chunk->slow_verify();
|
||||
return chunk->free_chunks_total_words();
|
||||
chunk_manager->slow_verify();
|
||||
return chunk_manager->free_chunks_total_words();
|
||||
}
|
||||
|
||||
size_t MetaspaceAux::free_chunks_total_bytes(Metaspace::MetadataType mdtype) {
|
||||
|
|
@ -2802,9 +2747,9 @@ void MetaspaceAux::dump(outputStream* out) {
|
|||
}
|
||||
|
||||
void MetaspaceAux::verify_free_chunks() {
|
||||
Metaspace::space_list()->chunk_manager()->verify();
|
||||
Metaspace::chunk_manager_metadata()->verify();
|
||||
if (Metaspace::using_class_space()) {
|
||||
Metaspace::class_space_list()->chunk_manager()->verify();
|
||||
Metaspace::chunk_manager_class()->verify();
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -2875,6 +2820,9 @@ Metaspace::~Metaspace() {
|
|||
VirtualSpaceList* Metaspace::_space_list = NULL;
|
||||
VirtualSpaceList* Metaspace::_class_space_list = NULL;
|
||||
|
||||
ChunkManager* Metaspace::_chunk_manager_metadata = NULL;
|
||||
ChunkManager* Metaspace::_chunk_manager_class = NULL;
|
||||
|
||||
#define VIRTUALSPACEMULTIPLIER 2
|
||||
|
||||
#ifdef _LP64
|
||||
|
|
@ -2982,6 +2930,7 @@ void Metaspace::initialize_class_space(ReservedSpace rs) {
|
|||
err_msg(SIZE_FORMAT " != " UINTX_FORMAT, rs.size(), CompressedClassSpaceSize));
|
||||
assert(using_class_space(), "Must be using class space");
|
||||
_class_space_list = new VirtualSpaceList(rs);
|
||||
_chunk_manager_class = new ChunkManager(SpecializedChunk, ClassSmallChunk, ClassMediumChunk);
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -3007,6 +2956,7 @@ void Metaspace::global_initialize() {
|
|||
// remainder is the misc code and data chunks.
|
||||
cds_total = FileMapInfo::shared_spaces_size();
|
||||
_space_list = new VirtualSpaceList(cds_total/wordSize);
|
||||
_chunk_manager_metadata = new ChunkManager(SpecializedChunk, SmallChunk, MediumChunk);
|
||||
|
||||
#ifdef _LP64
|
||||
// Set the compressed klass pointer base so that decoding of these pointers works
|
||||
|
|
@ -3074,15 +3024,30 @@ void Metaspace::global_initialize() {
|
|||
size_t word_size = VIRTUALSPACEMULTIPLIER * first_chunk_word_size();
|
||||
// Initialize the list of virtual spaces.
|
||||
_space_list = new VirtualSpaceList(word_size);
|
||||
_chunk_manager_metadata = new ChunkManager(SpecializedChunk, SmallChunk, MediumChunk);
|
||||
}
|
||||
}
|
||||
|
||||
Metachunk* Metaspace::get_initialization_chunk(MetadataType mdtype,
|
||||
size_t chunk_word_size,
|
||||
size_t chunk_bunch) {
|
||||
// Get a chunk from the chunk freelist
|
||||
Metachunk* chunk = get_chunk_manager(mdtype)->chunk_freelist_allocate(chunk_word_size);
|
||||
if (chunk != NULL) {
|
||||
return chunk;
|
||||
}
|
||||
|
||||
return get_space_list(mdtype)->get_initialization_chunk(chunk_word_size, chunk_bunch);
|
||||
}
|
||||
|
||||
void Metaspace::initialize(Mutex* lock, MetaspaceType type) {
|
||||
|
||||
assert(space_list() != NULL,
|
||||
"Metadata VirtualSpaceList has not been initialized");
|
||||
assert(chunk_manager_metadata() != NULL,
|
||||
"Metadata ChunkManager has not been initialized");
|
||||
|
||||
_vsm = new SpaceManager(NonClassType, lock, space_list());
|
||||
_vsm = new SpaceManager(NonClassType, lock);
|
||||
if (_vsm == NULL) {
|
||||
return;
|
||||
}
|
||||
|
|
@ -3091,11 +3056,13 @@ void Metaspace::initialize(Mutex* lock, MetaspaceType type) {
|
|||
vsm()->get_initial_chunk_sizes(type, &word_size, &class_word_size);
|
||||
|
||||
if (using_class_space()) {
|
||||
assert(class_space_list() != NULL,
|
||||
"Class VirtualSpaceList has not been initialized");
|
||||
assert(class_space_list() != NULL,
|
||||
"Class VirtualSpaceList has not been initialized");
|
||||
assert(chunk_manager_class() != NULL,
|
||||
"Class ChunkManager has not been initialized");
|
||||
|
||||
// Allocate SpaceManager for classes.
|
||||
_class_vsm = new SpaceManager(ClassType, lock, class_space_list());
|
||||
_class_vsm = new SpaceManager(ClassType, lock);
|
||||
if (_class_vsm == NULL) {
|
||||
return;
|
||||
}
|
||||
|
|
@ -3104,9 +3071,9 @@ void Metaspace::initialize(Mutex* lock, MetaspaceType type) {
|
|||
MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag);
|
||||
|
||||
// Allocate chunk for metadata objects
|
||||
Metachunk* new_chunk =
|
||||
space_list()->get_initialization_chunk(word_size,
|
||||
vsm()->medium_chunk_bunch());
|
||||
Metachunk* new_chunk = get_initialization_chunk(NonClassType,
|
||||
word_size,
|
||||
vsm()->medium_chunk_bunch());
|
||||
assert(!DumpSharedSpaces || new_chunk != NULL, "should have enough space for both chunks");
|
||||
if (new_chunk != NULL) {
|
||||
// Add to this manager's list of chunks in use and current_chunk().
|
||||
|
|
@ -3115,9 +3082,9 @@ void Metaspace::initialize(Mutex* lock, MetaspaceType type) {
|
|||
|
||||
// Allocate chunk for class metadata objects
|
||||
if (using_class_space()) {
|
||||
Metachunk* class_chunk =
|
||||
class_space_list()->get_initialization_chunk(class_word_size,
|
||||
class_vsm()->medium_chunk_bunch());
|
||||
Metachunk* class_chunk = get_initialization_chunk(ClassType,
|
||||
class_word_size,
|
||||
class_vsm()->medium_chunk_bunch());
|
||||
if (class_chunk != NULL) {
|
||||
class_vsm()->add_chunk(class_chunk, true);
|
||||
}
|
||||
|
|
@ -3334,12 +3301,16 @@ void Metaspace::iterate(Metaspace::AllocRecordClosure *closure) {
|
|||
}
|
||||
}
|
||||
|
||||
void Metaspace::purge(MetadataType mdtype) {
|
||||
get_space_list(mdtype)->purge(get_chunk_manager(mdtype));
|
||||
}
|
||||
|
||||
void Metaspace::purge() {
|
||||
MutexLockerEx cl(SpaceManager::expand_lock(),
|
||||
Mutex::_no_safepoint_check_flag);
|
||||
space_list()->purge();
|
||||
purge(NonClassType);
|
||||
if (using_class_space()) {
|
||||
class_space_list()->purge();
|
||||
purge(ClassType);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -56,12 +56,15 @@
|
|||
// +-------------------+
|
||||
//
|
||||
|
||||
class ChunkManager;
|
||||
class ClassLoaderData;
|
||||
class Metablock;
|
||||
class Metachunk;
|
||||
class MetaWord;
|
||||
class Mutex;
|
||||
class outputStream;
|
||||
class SpaceManager;
|
||||
class VirtualSpaceList;
|
||||
|
||||
// Metaspaces each have a SpaceManager and allocations
|
||||
// are done by the SpaceManager. Allocations are done
|
||||
|
|
@ -76,8 +79,6 @@ class SpaceManager;
|
|||
// allocate() method returns a block for use as a
|
||||
// quantum of metadata.
|
||||
|
||||
class VirtualSpaceList;
|
||||
|
||||
class Metaspace : public CHeapObj<mtClass> {
|
||||
friend class VMStructs;
|
||||
friend class SpaceManager;
|
||||
|
|
@ -102,6 +103,10 @@ class Metaspace : public CHeapObj<mtClass> {
|
|||
private:
|
||||
void initialize(Mutex* lock, MetaspaceType type);
|
||||
|
||||
Metachunk* get_initialization_chunk(MetadataType mdtype,
|
||||
size_t chunk_word_size,
|
||||
size_t chunk_bunch);
|
||||
|
||||
// Align up the word size to the allocation word size
|
||||
static size_t align_word_size_up(size_t);
|
||||
|
||||
|
|
@ -134,6 +139,10 @@ class Metaspace : public CHeapObj<mtClass> {
|
|||
static VirtualSpaceList* _space_list;
|
||||
static VirtualSpaceList* _class_space_list;
|
||||
|
||||
static ChunkManager* _chunk_manager_metadata;
|
||||
static ChunkManager* _chunk_manager_class;
|
||||
|
||||
public:
|
||||
static VirtualSpaceList* space_list() { return _space_list; }
|
||||
static VirtualSpaceList* class_space_list() { return _class_space_list; }
|
||||
static VirtualSpaceList* get_space_list(MetadataType mdtype) {
|
||||
|
|
@ -141,6 +150,14 @@ class Metaspace : public CHeapObj<mtClass> {
|
|||
return mdtype == ClassType ? class_space_list() : space_list();
|
||||
}
|
||||
|
||||
static ChunkManager* chunk_manager_metadata() { return _chunk_manager_metadata; }
|
||||
static ChunkManager* chunk_manager_class() { return _chunk_manager_class; }
|
||||
static ChunkManager* get_chunk_manager(MetadataType mdtype) {
|
||||
assert(mdtype != MetadataTypeCount, "MetadaTypeCount can't be used as mdtype");
|
||||
return mdtype == ClassType ? chunk_manager_class() : chunk_manager_metadata();
|
||||
}
|
||||
|
||||
private:
|
||||
// This is used by DumpSharedSpaces only, where only _vsm is used. So we will
|
||||
// maintain a single list for now.
|
||||
void record_allocation(void* ptr, MetaspaceObj::Type type, size_t word_size);
|
||||
|
|
@ -199,6 +216,7 @@ class Metaspace : public CHeapObj<mtClass> {
|
|||
void dump(outputStream* const out) const;
|
||||
|
||||
// Free empty virtualspaces
|
||||
static void purge(MetadataType mdtype);
|
||||
static void purge();
|
||||
|
||||
void print_on(outputStream* st) const;
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue