1 /* 2 * Copyright (c) 2015, 2017, 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/z/zBarrierSet.hpp" 29 #include "gc/z/zCollectorPolicy.hpp" 30 #include "gc/z/zDirector.hpp" 31 #include "gc/z/zDriver.hpp" 32 #include "gc/z/zHeap.hpp" 33 #include "gc/z/zStat.hpp" 34 35 class ZCollectedHeap : public CollectedHeap { 36 friend class VMStructs; 37 38 private: 39 ZCollectorPolicy* _policy; 40 ZBarrierSet _barrier; 41 ZHeap _heap; 42 ZDirector* _director; 43 ZDriver* _driver; 44 ZStat* _stat; 45 46 virtual HeapWord* allocate_new_tlab(size_t word_size); 47 48 public: 49 static ZCollectedHeap* heap(); 50 51 using CollectedHeap::ensure_parsability; 52 using CollectedHeap::accumulate_statistics_all_tlabs; 53 using CollectedHeap::resize_all_tlabs; 54 55 ZCollectedHeap(ZCollectorPolicy* policy); 56 virtual Name kind() const; 57 virtual const char* name() const; 58 virtual jint initialize(); 59 virtual void initialize_serviceability(); 60 virtual void stop(); 61 62 virtual CollectorPolicy* collector_policy() const; 63 virtual AdaptiveSizePolicy* size_policy(); 64 65 virtual size_t max_capacity() const; 66 virtual size_t capacity() const; 67 virtual size_t used() const; 68 69 virtual bool is_maximal_no_gc() const; 70 virtual bool is_scavengable(oop obj); 71 virtual bool is_in(const void* p) const; 72 virtual bool is_in_closed_subset(const void* p) const; 73 74 virtual HeapWord* mem_allocate(size_t size, bool* gc_overhead_limit_was_exceeded); 75 virtual void collect(GCCause::Cause cause); 76 virtual void collect_as_vm_thread(GCCause::Cause cause); 77 virtual void do_full_collection(bool clear_all_soft_refs); 78 79 virtual bool supports_tlab_allocation() const; 80 virtual size_t tlab_capacity(Thread* thr) const; 81 virtual size_t tlab_used(Thread* thr) const; 82 virtual size_t max_tlab_size() const; 83 virtual size_t unsafe_max_tlab_alloc(Thread* thr) const; 84 85 virtual bool can_elide_tlab_store_barriers() const; 86 virtual bool can_elide_initializing_store_barrier(oop new_obj); 87 virtual bool card_mark_must_follow_store() const; 88 89 virtual GrowableArray<GCMemoryManager*> memory_managers(); 90 virtual GrowableArray<MemoryPool*> memory_pools(); 91 92 virtual void object_iterate(ObjectClosure* cl); 93 virtual void safe_object_iterate(ObjectClosure* cl); 94 95 virtual HeapWord* block_start(const void* addr) const; 96 virtual size_t block_size(const HeapWord* addr) const; 97 virtual bool block_is_obj(const HeapWord* addr) const; 98 99 virtual void register_nmethod(nmethod* nm); 100 virtual void unregister_nmethod(nmethod* nm); 101 virtual void verify_nmethod(nmethod* nmethod); 102 103 virtual jlong millis_since_last_gc(); 104 105 virtual void gc_threads_do(ThreadClosure* tc) const; 106 107 virtual VirtualSpaceSummary create_heap_space_summary(); 108 109 virtual void print_on(outputStream* st) const; 110 virtual void print_on_error(outputStream* st) const; 111 virtual void print_extended_on(outputStream* st) const; 112 virtual void print_gc_threads_on(outputStream* st) const; 113 virtual void print_tracing_info() const; 114 115 virtual void prepare_for_verify(); 116 virtual void verify(VerifyOption option /* ignored */); 117 virtual bool is_oop(oop object) const; 118 }; 119 120 #endif // SHARE_GC_Z_ZCOLLECTEDHEAP_HPP