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Hiroshi Yamauchicf58d4a2013-09-26 14:21:22 -07001/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ART_RUNTIME_GC_SPACE_ROSALLOC_SPACE_H_
18#define ART_RUNTIME_GC_SPACE_ROSALLOC_SPACE_H_
19
20#include "gc/allocator/rosalloc.h"
21#include "malloc_space.h"
22#include "space.h"
23
24namespace art {
25namespace gc {
26
27namespace collector {
28 class MarkSweep;
29} // namespace collector
30
31namespace space {
32
33// An alloc space is a space where objects may be allocated and garbage collected.
34class RosAllocSpace : public MallocSpace {
35 public:
36 // Create a RosAllocSpace with the requested sizes. The requested
37 // base address is not guaranteed to be granted, if it is required,
38 // the caller should call Begin on the returned space to confirm the
39 // request was granted.
40 static RosAllocSpace* Create(const std::string& name, size_t initial_size, size_t growth_limit,
Hiroshi Yamauchi573f7d22013-12-17 11:54:23 -080041 size_t capacity, byte* requested_begin, bool low_memory_mode);
Mathieu Chartiere6da9af2013-12-16 11:54:42 -080042 static RosAllocSpace* CreateFromMemMap(MemMap* mem_map, const std::string& name,
43 size_t starting_size, size_t initial_size,
44 size_t growth_limit, size_t capacity,
45 bool low_memory_mode);
Hiroshi Yamauchicf58d4a2013-09-26 14:21:22 -070046
47 virtual mirror::Object* AllocWithGrowth(Thread* self, size_t num_bytes,
48 size_t* bytes_allocated) LOCKS_EXCLUDED(lock_);
49 virtual mirror::Object* Alloc(Thread* self, size_t num_bytes, size_t* bytes_allocated);
Ian Rogersef7d42f2014-01-06 12:55:46 -080050 virtual size_t AllocationSize(mirror::Object* obj);
51 virtual size_t Free(Thread* self, mirror::Object* ptr)
52 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
53 virtual size_t FreeList(Thread* self, size_t num_ptrs, mirror::Object** ptrs)
54 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
Hiroshi Yamauchicf58d4a2013-09-26 14:21:22 -070055
56 mirror::Object* AllocNonvirtual(Thread* self, size_t num_bytes, size_t* bytes_allocated);
57
Ian Rogersef7d42f2014-01-06 12:55:46 -080058 size_t AllocationSizeNonvirtual(mirror::Object* obj)
Hiroshi Yamauchicf58d4a2013-09-26 14:21:22 -070059 NO_THREAD_SAFETY_ANALYSIS {
60 // TODO: NO_THREAD_SAFETY_ANALYSIS because SizeOf() requires that mutator_lock is held.
61 void* obj_ptr = const_cast<void*>(reinterpret_cast<const void*>(obj));
62 // obj is a valid object. Use its class in the header to get the size.
Mathieu Chartier4e305412014-02-19 10:54:44 -080063 // Don't use verification since the object may be dead if we are sweeping.
64 size_t size = obj->SizeOf<kVerifyNone>();
Hiroshi Yamauchicf58d4a2013-09-26 14:21:22 -070065 size_t size_by_size = rosalloc_->UsableSize(size);
66 if (kIsDebugBuild) {
67 size_t size_by_ptr = rosalloc_->UsableSize(obj_ptr);
68 if (size_by_size != size_by_ptr) {
69 LOG(INFO) << "Found a bad sized obj of size " << size
70 << " at " << std::hex << reinterpret_cast<intptr_t>(obj_ptr) << std::dec
71 << " size_by_size=" << size_by_size << " size_by_ptr=" << size_by_ptr;
72 }
73 DCHECK_EQ(size_by_size, size_by_ptr);
74 }
75 return size_by_size;
76 }
77
78 art::gc::allocator::RosAlloc* GetRosAlloc() {
79 return rosalloc_;
80 }
81
82 size_t Trim();
83 void Walk(WalkCallback callback, void* arg) LOCKS_EXCLUDED(lock_);
84 size_t GetFootprint();
85 size_t GetFootprintLimit();
86 void SetFootprintLimit(size_t limit);
87
Mathieu Chartiere6da9af2013-12-16 11:54:42 -080088 virtual void Clear();
Hiroshi Yamauchicf58d4a2013-09-26 14:21:22 -070089 MallocSpace* CreateInstance(const std::string& name, MemMap* mem_map, void* allocator,
90 byte* begin, byte* end, byte* limit, size_t growth_limit);
91
92 uint64_t GetBytesAllocated();
93 uint64_t GetObjectsAllocated();
Hiroshi Yamauchicf58d4a2013-09-26 14:21:22 -070094
95 void RevokeThreadLocalBuffers(Thread* thread);
96 void RevokeAllThreadLocalBuffers();
97
98 // Returns the class of a recently freed object.
99 mirror::Class* FindRecentFreedObject(const mirror::Object* obj);
100
Hiroshi Yamauchicf58d4a2013-09-26 14:21:22 -0700101 virtual bool IsRosAllocSpace() const {
102 return true;
103 }
104 virtual RosAllocSpace* AsRosAllocSpace() {
105 return this;
106 }
107
Hiroshi Yamauchia4adbfd2014-02-04 18:12:17 -0800108 void Verify() EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_) {
109 rosalloc_->Verify();
110 }
111
Hiroshi Yamauchicf58d4a2013-09-26 14:21:22 -0700112 protected:
113 RosAllocSpace(const std::string& name, MemMap* mem_map, allocator::RosAlloc* rosalloc,
114 byte* begin, byte* end, byte* limit, size_t growth_limit);
115
116 private:
Hiroshi Yamauchicf58d4a2013-09-26 14:21:22 -0700117 mirror::Object* AllocWithoutGrowthLocked(Thread* self, size_t num_bytes, size_t* bytes_allocated);
118
Hiroshi Yamauchi573f7d22013-12-17 11:54:23 -0800119 void* CreateAllocator(void* base, size_t morecore_start, size_t initial_size, bool low_memory_mode) {
120 return CreateRosAlloc(base, morecore_start, initial_size, low_memory_mode);
Hiroshi Yamauchicf58d4a2013-09-26 14:21:22 -0700121 }
Hiroshi Yamauchi573f7d22013-12-17 11:54:23 -0800122 static allocator::RosAlloc* CreateRosAlloc(void* base, size_t morecore_start, size_t initial_size,
123 bool low_memory_mode);
Hiroshi Yamauchicf58d4a2013-09-26 14:21:22 -0700124
125 void InspectAllRosAlloc(void (*callback)(void *start, void *end, size_t num_bytes, void* callback_arg),
126 void* arg)
127 LOCKS_EXCLUDED(Locks::runtime_shutdown_lock_, Locks::thread_list_lock_);
128
Hiroshi Yamauchicf58d4a2013-09-26 14:21:22 -0700129 // Underlying rosalloc.
Hiroshi Yamauchi4ce1f002013-11-18 14:49:09 -0800130 art::gc::allocator::RosAlloc* const rosalloc_;
131
132 // A rosalloc pointer used for allocation. Equals to what rosalloc_
133 // points to or nullptr after InvalidateAllocator() is called.
134 art::gc::allocator::RosAlloc* rosalloc_for_alloc_;
Hiroshi Yamauchicf58d4a2013-09-26 14:21:22 -0700135
136 friend class collector::MarkSweep;
137
138 DISALLOW_COPY_AND_ASSIGN(RosAllocSpace);
139};
140
141} // namespace space
142} // namespace gc
143} // namespace art
144
145#endif // ART_RUNTIME_GC_SPACE_ROSALLOC_SPACE_H_