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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #ifndef VM_ALLOCATION_H_ | 5 #ifndef VM_ALLOCATION_H_ |
6 #define VM_ALLOCATION_H_ | 6 #define VM_ALLOCATION_H_ |
7 | 7 |
8 #include "vm/assert.h" | 8 #include "vm/assert.h" |
9 | 9 |
10 namespace dart { | 10 namespace dart { |
11 | 11 |
| 12 // Forward declarations. |
| 13 class Isolate; |
| 14 |
12 // Stack allocated objects subclass from this base class. Objects of this type | 15 // Stack allocated objects subclass from this base class. Objects of this type |
13 // cannot be allocated on either the C or object heaps. Destructors for objects | 16 // cannot be allocated on either the C or object heaps. Destructors for objects |
14 // of this type will not be run unless the stack is unwound through normal | 17 // of this type will not be run unless the stack is unwound through normal |
15 // program control flow. | 18 // program control flow. |
16 class ValueObject { | 19 class ValueObject { |
17 public: | 20 public: |
18 ValueObject() { } | 21 ValueObject() { } |
19 ~ValueObject() { } | 22 ~ValueObject() { } |
20 | 23 |
21 private: | 24 private: |
22 DISALLOW_ALLOCATION(); | 25 DISALLOW_ALLOCATION(); |
23 // TODO(5411081): Add DISALLOW_COPY_AND_ASSIGN(ValueObject) once the mac | 26 // TODO(5411081): Add DISALLOW_COPY_AND_ASSIGN(ValueObject) once the mac |
24 // build issue is resolved. | 27 // build issue is resolved. |
25 }; | 28 }; |
26 | 29 |
27 | 30 |
28 // Stack resources subclass from this base class. The VM will ensure that the | 31 // Stack resources subclass from this base class. The VM will ensure that the |
29 // destructors of these objects are called before the stack is unwound past the | 32 // destructors of these objects are called before the stack is unwound past the |
30 // objects location on the stack. Use stack resource objects if objects | 33 // objects location on the stack. Use stack resource objects if objects |
31 // need to be destroyed even in the case of exceptions when a Longjump is done | 34 // need to be destroyed even in the case of exceptions when a Longjump is done |
32 // to a stack frame above the frame where these objects were allocated. | 35 // to a stack frame above the frame where these objects were allocated. |
33 class StackResource { | 36 class StackResource { |
34 public: | 37 public: |
35 StackResource(); | 38 StackResource(); |
36 virtual ~StackResource(); | 39 virtual ~StackResource(); |
37 | 40 |
| 41 Isolate* isolate() const { return isolate_; } |
| 42 |
38 // The delete operator should be private instead of public, but unfortunately | 43 // The delete operator should be private instead of public, but unfortunately |
39 // the compiler complains when compiling the destructors for subclasses. | 44 // the compiler complains when compiling the destructors for subclasses. |
40 void operator delete(void* pointer) { UNREACHABLE(); } | 45 void operator delete(void* pointer) { UNREACHABLE(); } |
41 | 46 |
42 private: | 47 private: |
| 48 Isolate* isolate_; // Current isolate for this stack resource. |
43 StackResource* previous_; | 49 StackResource* previous_; |
44 | 50 |
45 void* operator new(uword size); | 51 void* operator new(uword size); |
46 | 52 |
47 DISALLOW_COPY_AND_ASSIGN(StackResource); | 53 DISALLOW_COPY_AND_ASSIGN(StackResource); |
48 }; | 54 }; |
49 | 55 |
50 | 56 |
51 // Static allocated classes only contain static members and can never | 57 // Static allocated classes only contain static members and can never |
52 // be instantiated in the heap or on the stack. | 58 // be instantiated in the heap or on the stack. |
(...skipping 27 matching lines...) Expand all Loading... |
80 // deallocated by invoking DeleteAll() on the zone they live in. | 86 // deallocated by invoking DeleteAll() on the zone they live in. |
81 void operator delete(void* pointer) { UNREACHABLE(); } | 87 void operator delete(void* pointer) { UNREACHABLE(); } |
82 | 88 |
83 private: | 89 private: |
84 DISALLOW_COPY_AND_ASSIGN(ZoneAllocated); | 90 DISALLOW_COPY_AND_ASSIGN(ZoneAllocated); |
85 }; | 91 }; |
86 | 92 |
87 } // namespace dart | 93 } // namespace dart |
88 | 94 |
89 #endif // VM_ALLOCATION_H_ | 95 #endif // VM_ALLOCATION_H_ |
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