1 /* 2 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #ifndef SHARE_GC_Z_ZCOLLECTEDHEAP_HPP 25 #define SHARE_GC_Z_ZCOLLECTEDHEAP_HPP 26 27 #include "gc/shared/collectedHeap.hpp" 28 #include "gc/shared/softRefPolicy.hpp" 29 #include "gc/z/zBarrierSet.hpp" 30 #include "gc/z/zCollectorPolicy.hpp" 31 #include "gc/z/zDirector.hpp" 32 #include "gc/z/zDriver.hpp" 33 #include "gc/z/zInitialize.hpp" 34 #include "gc/z/zHeap.hpp" 35 #include "gc/z/zRuntimeWorkers.hpp" 36 #include "gc/z/zStat.hpp" 37 38 class ZCollectedHeap : public CollectedHeap { 39 friend class VMStructs; 40 41 private: 42 ZCollectorPolicy* _collector_policy; 43 SoftRefPolicy _soft_ref_policy; 44 ZBarrierSet _barrier_set; 45 ZInitialize _initialize; 46 ZHeap _heap; 47 ZDirector* _director; 48 ZDriver* _driver; 49 ZStat* _stat; 50 ZRuntimeWorkers _runtime_workers; 51 52 virtual HeapWord* allocate_new_tlab(size_t min_size, 53 size_t requested_size, 54 size_t* actual_size); 55 56 public: 57 static ZCollectedHeap* heap(); 58 59 ZCollectedHeap(ZCollectorPolicy* policy); 60 virtual Name kind() const; 61 virtual const char* name() const; 62 virtual jint initialize(); 63 virtual void initialize_serviceability(); 64 virtual void stop(); 65 66 virtual CollectorPolicy* collector_policy() const; 67 virtual SoftRefPolicy* soft_ref_policy(); 68 69 virtual size_t max_capacity() const; 70 virtual size_t capacity() const; 71 virtual size_t used() const; 72 73 virtual bool is_maximal_no_gc() const; 74 virtual bool is_scavengable(oop obj); 75 virtual bool is_in(const void* p) const; 76 virtual bool is_in_closed_subset(const void* p) const; 77 78 virtual void fill_with_dummy_object(HeapWord* start, HeapWord* end, bool zap); 79 80 virtual HeapWord* mem_allocate(size_t size, bool* gc_overhead_limit_was_exceeded); 81 virtual MetaWord* satisfy_failed_metadata_allocation(ClassLoaderData* loader_data, 82 size_t size, 83 Metaspace::MetadataType mdtype); 84 virtual void collect(GCCause::Cause cause); 85 virtual void collect_as_vm_thread(GCCause::Cause cause); 86 virtual void do_full_collection(bool clear_all_soft_refs); 87 88 virtual bool supports_tlab_allocation() const; 89 virtual size_t tlab_capacity(Thread* thr) const; 90 virtual size_t tlab_used(Thread* thr) const; 91 virtual size_t max_tlab_size() const; 92 virtual size_t unsafe_max_tlab_alloc(Thread* thr) const; 93 94 virtual bool can_elide_tlab_store_barriers() const; 95 virtual bool can_elide_initializing_store_barrier(oop new_obj); 96 virtual bool card_mark_must_follow_store() const; 97 98 virtual GrowableArray<GCMemoryManager*> memory_managers(); 99 virtual GrowableArray<MemoryPool*> memory_pools(); 100 101 virtual void object_iterate(ObjectClosure* cl); 102 virtual void safe_object_iterate(ObjectClosure* cl); 103 104 virtual HeapWord* block_start(const void* addr) const; 105 virtual size_t block_size(const HeapWord* addr) const; 106 virtual bool block_is_obj(const HeapWord* addr) const; 107 108 virtual void register_nmethod(nmethod* nm); 109 virtual void unregister_nmethod(nmethod* nm); 110 virtual void verify_nmethod(nmethod* nmethod); 111 112 virtual WorkGang* get_safepoint_workers(); 113 114 virtual jlong millis_since_last_gc(); 115 116 virtual void gc_threads_do(ThreadClosure* tc) const; 117 118 virtual VirtualSpaceSummary create_heap_space_summary(); 119 120 virtual void safepoint_synchronize_begin(); 121 virtual void safepoint_synchronize_end(); 122 123 virtual void print_on(outputStream* st) const; 124 virtual void print_on_error(outputStream* st) const; 125 virtual void print_extended_on(outputStream* st) const; 126 virtual void print_gc_threads_on(outputStream* st) const; 127 virtual void print_tracing_info() const; 128 129 virtual void prepare_for_verify(); 130 virtual void verify(VerifyOption option /* ignored */); 131 virtual bool is_oop(oop object) const; 132 }; 133 134 #endif // SHARE_GC_Z_ZCOLLECTEDHEAP_HPP 135