1 /* 2 * Copyright (c) 2015, 2020, 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/zDirector.hpp" 31 #include "gc/z/zDriver.hpp" 32 #include "gc/z/zHeap.hpp" 33 #include "gc/z/zInitialize.hpp" 34 #include "gc/z/zRuntimeWorkers.hpp" 35 #include "gc/z/zStat.hpp" 36 #include "gc/z/zUncommitter.hpp" 37 38 class ZCollectedHeap : public CollectedHeap { 39 friend class VMStructs; 40 41 private: 42 SoftRefPolicy _soft_ref_policy; 43 ZBarrierSet _barrier_set; 44 ZInitialize _initialize; 45 ZHeap _heap; 46 ZDirector* _director; 47 ZDriver* _driver; 48 ZUncommitter* _uncommitter; 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(); 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 SoftRefPolicy* soft_ref_policy(); 67 68 virtual size_t max_capacity() const; 69 virtual size_t capacity() const; 70 virtual size_t used() const; 71 virtual size_t unused() const; 72 73 virtual bool is_maximal_no_gc() const; 74 virtual bool is_in(const void* p) const; 75 76 virtual uint32_t hash_oop(oop obj) const; 77 78 virtual oop array_allocate(Klass* klass, int size, int length, bool do_zero, TRAPS); 79 virtual HeapWord* mem_allocate(size_t size, bool* gc_overhead_limit_was_exceeded); 80 virtual MetaWord* satisfy_failed_metadata_allocation(ClassLoaderData* loader_data, 81 size_t size, 82 Metaspace::MetadataType mdtype); 83 virtual void collect(GCCause::Cause cause); 84 virtual void collect_as_vm_thread(GCCause::Cause cause); 85 virtual void do_full_collection(bool clear_all_soft_refs); 86 87 virtual bool supports_tlab_allocation() const; 88 virtual size_t tlab_capacity(Thread* thr) const; 89 virtual size_t tlab_used(Thread* thr) const; 90 virtual size_t max_tlab_size() const; 91 virtual size_t unsafe_max_tlab_alloc(Thread* thr) const; 92 93 virtual bool can_elide_tlab_store_barriers() const; 94 virtual bool can_elide_initializing_store_barrier(oop new_obj); 95 virtual bool card_mark_must_follow_store() const; 96 97 virtual GrowableArray<GCMemoryManager*> memory_managers(); 98 virtual GrowableArray<MemoryPool*> memory_pools(); 99 100 virtual void object_iterate(ObjectClosure* cl); 101 102 virtual void keep_alive(oop obj); 103 104 virtual void register_nmethod(nmethod* nm); 105 virtual void unregister_nmethod(nmethod* nm); 106 virtual void flush_nmethod(nmethod* nm); 107 virtual void verify_nmethod(nmethod* nmethod); 108 109 virtual WorkGang* get_safepoint_workers(); 110 111 virtual jlong millis_since_last_gc(); 112 113 virtual void gc_threads_do(ThreadClosure* tc) const; 114 115 virtual VirtualSpaceSummary create_heap_space_summary(); 116 117 virtual void safepoint_synchronize_begin(); 118 virtual void safepoint_synchronize_end(); 119 120 virtual void print_on(outputStream* st) const; 121 virtual void print_on_error(outputStream* st) const; 122 virtual void print_extended_on(outputStream* st) const; 123 virtual void print_gc_threads_on(outputStream* st) const; 124 virtual void print_tracing_info() const; 125 virtual bool print_location(outputStream* st, void* addr) const; 126 127 virtual void prepare_for_verify(); 128 virtual void verify(VerifyOption option /* ignored */); 129 virtual bool is_oop(oop object) const; 130 virtual bool supports_concurrent_gc_breakpoints() const; 131 }; 132 133 #endif // SHARE_GC_Z_ZCOLLECTEDHEAP_HPP