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
|
/*
* Copyright (C) 2014 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_HANDLE_SCOPE_INL_H_
#define ART_RUNTIME_HANDLE_SCOPE_INL_H_
#include "handle_scope.h"
#include "handle.h"
#include "thread.h"
#include "verify_object-inl.h"
namespace art {
template<size_t kNumReferences>
inline StackHandleScope<kNumReferences>::StackHandleScope(Thread* self, mirror::Object* fill_value)
: HandleScope(self->GetTopHandleScope(), kNumReferences), self_(self), pos_(0) {
DCHECK_EQ(self, Thread::Current());
static_assert(kNumReferences >= 1, "StackHandleScope must contain at least 1 reference");
// TODO: Figure out how to use a compile assert.
CHECK_EQ(&storage_[0], GetReferences());
for (size_t i = 0; i < kNumReferences; ++i) {
SetReference(i, fill_value);
}
self_->PushHandleScope(this);
}
template<size_t kNumReferences>
inline StackHandleScope<kNumReferences>::~StackHandleScope() {
HandleScope* top_handle_scope = self_->PopHandleScope();
DCHECK_EQ(top_handle_scope, this);
}
inline size_t HandleScope::SizeOf(uint32_t num_references) {
size_t header_size = sizeof(HandleScope);
size_t data_size = sizeof(StackReference<mirror::Object>) * num_references;
return header_size + data_size;
}
inline size_t HandleScope::SizeOf(size_t pointer_size, uint32_t num_references) {
// Assume that the layout is packed.
size_t header_size = pointer_size + sizeof(number_of_references_);
size_t data_size = sizeof(StackReference<mirror::Object>) * num_references;
return header_size + data_size;
}
inline mirror::Object* HandleScope::GetReference(size_t i) const {
DCHECK_LT(i, number_of_references_);
return GetReferences()[i].AsMirrorPtr();
}
inline Handle<mirror::Object> HandleScope::GetHandle(size_t i) {
DCHECK_LT(i, number_of_references_);
return Handle<mirror::Object>(&GetReferences()[i]);
}
inline MutableHandle<mirror::Object> HandleScope::GetMutableHandle(size_t i) {
DCHECK_LT(i, number_of_references_);
return MutableHandle<mirror::Object>(&GetReferences()[i]);
}
inline void HandleScope::SetReference(size_t i, mirror::Object* object) {
DCHECK_LT(i, number_of_references_);
GetReferences()[i].Assign(object);
}
inline bool HandleScope::Contains(StackReference<mirror::Object>* handle_scope_entry) const {
// A HandleScope should always contain something. One created by the
// jni_compiler should have a jobject/jclass as a native method is
// passed in a this pointer or a class
DCHECK_GT(number_of_references_, 0U);
return &GetReferences()[0] <= handle_scope_entry &&
handle_scope_entry <= &GetReferences()[number_of_references_ - 1];
}
template<size_t kNumReferences> template<class T>
inline MutableHandle<T> StackHandleScope<kNumReferences>::NewHandle(T* object) {
SetReference(pos_, object);
MutableHandle<T> h(GetHandle<T>(pos_));
pos_++;
return h;
}
template<size_t kNumReferences> template<class T>
inline HandleWrapper<T> StackHandleScope<kNumReferences>::NewHandleWrapper(T** object) {
SetReference(pos_, *object);
MutableHandle<T> h(GetHandle<T>(pos_));
pos_++;
return HandleWrapper<T>(object, h);
}
template<size_t kNumReferences>
inline void StackHandleScope<kNumReferences>::SetReference(size_t i, mirror::Object* object) {
DCHECK_LT(i, kNumReferences);
VerifyObject(object);
GetReferences()[i].Assign(object);
}
} // namespace art
#endif // ART_RUNTIME_HANDLE_SCOPE_INL_H_
|
