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/zHeap.hpp"
31 #include "gc/z/zInitialize.hpp"
32 #include "gc/z/zRuntimeWorkers.hpp"
33
34 class ZDirector;
35 class ZDriver;
36 class ZStat;
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 ZStat* _stat;
49 ZRuntimeWorkers _runtime_workers;
50
51 virtual HeapWord* allocate_new_tlab(size_t min_size,
52 size_t requested_size,
53 size_t* actual_size);
54
55 public:
56 static ZCollectedHeap* heap();
57
58 ZCollectedHeap();
59 virtual Name kind() const;
60 virtual const char* name() const;
61 virtual jint initialize();
62 virtual void initialize_serviceability();
63 virtual void stop();
64
65 virtual SoftRefPolicy* soft_ref_policy();
66
67 virtual size_t max_capacity() const;
68 virtual size_t capacity() const;
69 virtual size_t used() const;
70 virtual size_t unused() const;
71
72 virtual bool is_maximal_no_gc() const;
73 virtual bool is_in(const void* p) const;
74
75 virtual uint32_t hash_oop(oop obj) const;
76
77 virtual oop array_allocate(Klass* klass, int size, int length, bool do_zero, TRAPS);
78 virtual HeapWord* mem_allocate(size_t size, bool* gc_overhead_limit_was_exceeded);
79 virtual MetaWord* satisfy_failed_metadata_allocation(ClassLoaderData* loader_data,
80 size_t size,
81 Metaspace::MetadataType mdtype);
82 virtual void collect(GCCause::Cause cause);
83 virtual void collect_as_vm_thread(GCCause::Cause cause);
84 virtual void do_full_collection(bool clear_all_soft_refs);
85
86 virtual bool supports_tlab_allocation() const;
87 virtual size_t tlab_capacity(Thread* thr) const;
88 virtual size_t tlab_used(Thread* thr) const;
89 virtual size_t max_tlab_size() const;
90 virtual size_t unsafe_max_tlab_alloc(Thread* thr) const;
91
92 virtual bool can_elide_tlab_store_barriers() const;
93 virtual bool can_elide_initializing_store_barrier(oop new_obj);
94 virtual bool card_mark_must_follow_store() const;
95
96 virtual GrowableArray<GCMemoryManager*> memory_managers();
97 virtual GrowableArray<MemoryPool*> memory_pools();
98
99 virtual void object_iterate(ObjectClosure* cl);
100
101 virtual void run_task(AbstractGangTask* task);
102
103 virtual void keep_alive(oop obj);
104
105 virtual void register_nmethod(nmethod* nm);
106 virtual void unregister_nmethod(nmethod* nm);
107 virtual void flush_nmethod(nmethod* nm);
108 virtual void verify_nmethod(nmethod* nmethod);
109
110 virtual WorkGang* get_safepoint_workers();
111
112 virtual void gc_threads_do(ThreadClosure* tc) const;
113
114 virtual VirtualSpaceSummary create_heap_space_summary();
115
116 virtual void safepoint_synchronize_begin();
117 virtual void safepoint_synchronize_end();
118
119 virtual void print_on(outputStream* st) const;
120 virtual void print_on_error(outputStream* st) const;
121 virtual void print_extended_on(outputStream* st) const;
122 virtual void print_tracing_info() const;
123 virtual bool print_location(outputStream* st, void* addr) const;
124
125 virtual void prepare_for_verify();
126 virtual void verify(VerifyOption option /* ignored */);
127 virtual bool is_oop(oop object) const;
128 virtual bool supports_concurrent_gc_breakpoints() const;
129 };
130
131 #endif // SHARE_GC_Z_ZCOLLECTEDHEAP_HPP