1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_RUNTIME_GC_ALLOCATOR_ROSALLOC_INL_H_
#define ART_RUNTIME_GC_ALLOCATOR_ROSALLOC_INL_H_
#include "rosalloc.h"
namespace art {
namespace gc {
namespace allocator {
inline ALWAYS_INLINE bool RosAlloc::ShouldCheckZeroMemory() {
return kCheckZeroMemory && !is_running_on_memory_tool_;
}
template<bool kThreadSafe>
inline ALWAYS_INLINE void* RosAlloc::Alloc(Thread* self, size_t size, size_t* bytes_allocated,
size_t* usable_size,
size_t* bytes_tl_bulk_allocated) {
if (UNLIKELY(size > kLargeSizeThreshold)) {
return AllocLargeObject(self, size, bytes_allocated, usable_size,
bytes_tl_bulk_allocated);
}
void* m;
if (kThreadSafe) {
m = AllocFromRun(self, size, bytes_allocated, usable_size, bytes_tl_bulk_allocated);
} else {
m = AllocFromRunThreadUnsafe(self, size, bytes_allocated, usable_size,
bytes_tl_bulk_allocated);
}
// Check if the returned memory is really all zero.
if (ShouldCheckZeroMemory() && m != nullptr) {
uint8_t* bytes = reinterpret_cast<uint8_t*>(m);
for (size_t i = 0; i < size; ++i) {
DCHECK_EQ(bytes[i], 0);
}
}
return m;
}
inline bool RosAlloc::Run::IsFull() {
return free_list_.Size() == 0;
}
inline bool RosAlloc::CanAllocFromThreadLocalRun(Thread* self, size_t size) {
if (UNLIKELY(!IsSizeForThreadLocal(size))) {
return false;
}
size_t bracket_size;
size_t idx = SizeToIndexAndBracketSize(size, &bracket_size);
DCHECK_LT(idx, kNumThreadLocalSizeBrackets);
Run* thread_local_run = reinterpret_cast<Run*>(self->GetRosAllocRun(idx));
if (kIsDebugBuild) {
// Need the lock to prevent race conditions.
MutexLock mu(self, *size_bracket_locks_[idx]);
CHECK(non_full_runs_[idx].find(thread_local_run) == non_full_runs_[idx].end());
CHECK(full_runs_[idx].find(thread_local_run) == full_runs_[idx].end());
}
DCHECK(thread_local_run != nullptr);
DCHECK(thread_local_run->IsThreadLocal() || thread_local_run == dedicated_full_run_);
return !thread_local_run->IsFull();
}
inline void* RosAlloc::AllocFromThreadLocalRun(Thread* self, size_t size,
size_t* bytes_allocated) {
DCHECK(bytes_allocated != nullptr);
if (UNLIKELY(!IsSizeForThreadLocal(size))) {
return nullptr;
}
size_t bracket_size;
size_t idx = SizeToIndexAndBracketSize(size, &bracket_size);
Run* thread_local_run = reinterpret_cast<Run*>(self->GetRosAllocRun(idx));
if (kIsDebugBuild) {
// Need the lock to prevent race conditions.
MutexLock mu(self, *size_bracket_locks_[idx]);
CHECK(non_full_runs_[idx].find(thread_local_run) == non_full_runs_[idx].end());
CHECK(full_runs_[idx].find(thread_local_run) == full_runs_[idx].end());
}
DCHECK(thread_local_run != nullptr);
DCHECK(thread_local_run->IsThreadLocal() || thread_local_run == dedicated_full_run_);
void* slot_addr = thread_local_run->AllocSlot();
if (LIKELY(slot_addr != nullptr)) {
*bytes_allocated = bracket_size;
}
return slot_addr;
}
inline size_t RosAlloc::MaxBytesBulkAllocatedFor(size_t size) {
if (UNLIKELY(!IsSizeForThreadLocal(size))) {
return size;
}
size_t bracket_size;
size_t idx = SizeToIndexAndBracketSize(size, &bracket_size);
return numOfSlots[idx] * bracket_size;
}
inline void* RosAlloc::Run::AllocSlot() {
Slot* slot = free_list_.Remove();
if (kTraceRosAlloc && slot != nullptr) {
const uint8_t idx = size_bracket_idx_;
LOG(INFO) << "RosAlloc::Run::AllocSlot() : " << slot
<< ", bracket_size=" << std::dec << bracketSizes[idx]
<< ", slot_idx=" << SlotIndex(slot);
}
return slot;
}
} // namespace allocator
} // namespace gc
} // namespace art
#endif // ART_RUNTIME_GC_ALLOCATOR_ROSALLOC_INL_H_
|
