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1 /*
2  * Copyright (C) 2011 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_MIRROR_CLASS_ALLOC_INL_H_
18 #define ART_RUNTIME_MIRROR_CLASS_ALLOC_INL_H_
19 
20 #include "class-inl.h"
21 
22 #include "gc/heap-inl.h"
23 #include "object-inl.h"
24 #include "runtime.h"
25 
26 namespace art {
27 namespace mirror {
28 
CheckObjectAlloc()29 inline void Class::CheckObjectAlloc() {
30   DCHECK(!IsArrayClass())
31       << PrettyClass()
32       << "A array shouldn't be allocated through this "
33       << "as it requires a pre-fence visitor that sets the class size.";
34   DCHECK(!IsClassClass())
35       << PrettyClass()
36       << "A class object shouldn't be allocated through this "
37       << "as it requires a pre-fence visitor that sets the class size.";
38   DCHECK(!IsStringClass())
39       << PrettyClass()
40       << "A string shouldn't be allocated through this "
41       << "as it requires a pre-fence visitor that sets the class size.";
42   DCHECK(IsInstantiable()) << PrettyClass();
43   // TODO: decide whether we want this check. It currently fails during bootstrap.
44   // DCHECK(!Runtime::Current()->IsStarted() || IsInitializing()) << PrettyClass();
45   DCHECK_GE(this->object_size_, sizeof(Object));
46 }
47 
48 template<bool kIsInstrumented, bool kCheckAddFinalizer>
Alloc(Thread * self,gc::AllocatorType allocator_type)49 inline ObjPtr<Object> Class::Alloc(Thread* self, gc::AllocatorType allocator_type) {
50   CheckObjectAlloc();
51   gc::Heap* heap = Runtime::Current()->GetHeap();
52   const bool add_finalizer = kCheckAddFinalizer && IsFinalizable();
53   if (!kCheckAddFinalizer) {
54     DCHECK(!IsFinalizable());
55   }
56   // Note that the this pointer may be invalidated after the allocation.
57   ObjPtr<Object> obj =
58       heap->AllocObjectWithAllocator<kIsInstrumented, false>(self,
59                                                              this,
60                                                              this->object_size_,
61                                                              allocator_type,
62                                                              VoidFunctor());
63   if (add_finalizer && LIKELY(obj != nullptr)) {
64     heap->AddFinalizerReference(self, &obj);
65     if (UNLIKELY(self->IsExceptionPending())) {
66       // Failed to allocate finalizer reference, it means that the whole allocation failed.
67       obj = nullptr;
68     }
69   }
70   return obj;
71 }
72 
AllocObject(Thread * self)73 inline ObjPtr<Object> Class::AllocObject(Thread* self) {
74   return Alloc<true>(self, Runtime::Current()->GetHeap()->GetCurrentAllocator());
75 }
76 
AllocNonMovableObject(Thread * self)77 inline ObjPtr<Object> Class::AllocNonMovableObject(Thread* self) {
78   return Alloc<true>(self, Runtime::Current()->GetHeap()->GetCurrentNonMovingAllocator());
79 }
80 
81 }  // namespace mirror
82 }  // namespace art
83 
84 #endif  // ART_RUNTIME_MIRROR_CLASS_ALLOC_INL_H_
85