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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 RUNTIME_VM_VISITOR_H_ | 5 #ifndef RUNTIME_VM_VISITOR_H_ |
6 #define RUNTIME_VM_VISITOR_H_ | 6 #define RUNTIME_VM_VISITOR_H_ |
7 | 7 |
8 #include "vm/allocation.h" | 8 #include "vm/allocation.h" |
9 #include "vm/globals.h" | 9 #include "vm/globals.h" |
10 #include "vm/growable_array.h" | 10 #include "vm/growable_array.h" |
11 | 11 |
12 namespace dart { | 12 namespace dart { |
13 | 13 |
14 // Forward declarations. | 14 // Forward declarations. |
15 class Isolate; | 15 class Isolate; |
16 class RawObject; | 16 class RawObject; |
17 | 17 |
18 // An object pointer visitor interface. | 18 // An object pointer visitor interface. |
19 class ObjectPointerVisitor { | 19 class ObjectPointerVisitor { |
20 public: | 20 public: |
21 explicit ObjectPointerVisitor(Isolate* isolate) : isolate_(isolate) { } | 21 explicit ObjectPointerVisitor(Isolate* isolate) : isolate_(isolate) {} |
22 virtual ~ObjectPointerVisitor() { } | 22 virtual ~ObjectPointerVisitor() {} |
23 | 23 |
24 Isolate* isolate() const { return isolate_; } | 24 Isolate* isolate() const { return isolate_; } |
25 | 25 |
26 // Range of pointers to visit 'first' <= pointer <= 'last'. | 26 // Range of pointers to visit 'first' <= pointer <= 'last'. |
27 virtual void VisitPointers(RawObject** first, RawObject** last) = 0; | 27 virtual void VisitPointers(RawObject** first, RawObject** last) = 0; |
28 | 28 |
29 virtual bool visit_function_code() const { return true; } | 29 virtual bool visit_function_code() const { return true; } |
30 virtual void add_skipped_code_function(RawFunction* funct) { | 30 virtual void add_skipped_code_function(RawFunction* funct) { UNREACHABLE(); } |
31 UNREACHABLE(); | |
32 } | |
33 // len argument is the number of pointers to visit starting from 'p'. | 31 // len argument is the number of pointers to visit starting from 'p'. |
34 void VisitPointers(RawObject** p, intptr_t len) { | 32 void VisitPointers(RawObject** p, intptr_t len) { |
35 VisitPointers(p, (p + len - 1)); | 33 VisitPointers(p, (p + len - 1)); |
36 } | 34 } |
37 | 35 |
38 void VisitPointer(RawObject** p) { VisitPointers(p , p); } | 36 void VisitPointer(RawObject** p) { VisitPointers(p, p); } |
39 | 37 |
40 private: | 38 private: |
41 Isolate* isolate_; | 39 Isolate* isolate_; |
42 NoSafepointScope no_safepoints_; | 40 NoSafepointScope no_safepoints_; |
43 | 41 |
44 DISALLOW_IMPLICIT_CONSTRUCTORS(ObjectPointerVisitor); | 42 DISALLOW_IMPLICIT_CONSTRUCTORS(ObjectPointerVisitor); |
45 }; | 43 }; |
46 | 44 |
47 | 45 |
48 // An object visitor interface. | 46 // An object visitor interface. |
49 class ObjectVisitor { | 47 class ObjectVisitor { |
50 public: | 48 public: |
51 ObjectVisitor() { } | 49 ObjectVisitor() {} |
52 | 50 |
53 virtual ~ObjectVisitor() { } | 51 virtual ~ObjectVisitor() {} |
54 | 52 |
55 // Invoked for each object. | 53 // Invoked for each object. |
56 virtual void VisitObject(RawObject* obj) = 0; | 54 virtual void VisitObject(RawObject* obj) = 0; |
57 | 55 |
58 private: | 56 private: |
59 DISALLOW_COPY_AND_ASSIGN(ObjectVisitor); | 57 DISALLOW_COPY_AND_ASSIGN(ObjectVisitor); |
60 }; | 58 }; |
61 | 59 |
62 | 60 |
63 // An object finder visitor interface. | 61 // An object finder visitor interface. |
64 class FindObjectVisitor { | 62 class FindObjectVisitor { |
65 public: | 63 public: |
66 FindObjectVisitor() { } | 64 FindObjectVisitor() {} |
67 virtual ~FindObjectVisitor() { } | 65 virtual ~FindObjectVisitor() {} |
68 | 66 |
69 // Allow to specify a address filter. | 67 // Allow to specify a address filter. |
70 virtual uword filter_addr() const { return 0; } | 68 virtual uword filter_addr() const { return 0; } |
71 bool VisitRange(uword begin_addr, uword end_addr) const { | 69 bool VisitRange(uword begin_addr, uword end_addr) const { |
72 uword addr = filter_addr(); | 70 uword addr = filter_addr(); |
73 return (addr == 0) || ((begin_addr <= addr) && (addr < end_addr)); | 71 return (addr == 0) || ((begin_addr <= addr) && (addr < end_addr)); |
74 } | 72 } |
75 | 73 |
76 // Check if object matches find condition. | 74 // Check if object matches find condition. |
77 virtual bool FindObject(RawObject* obj) const = 0; | 75 virtual bool FindObject(RawObject* obj) const = 0; |
78 | 76 |
79 private: | 77 private: |
80 DISALLOW_COPY_AND_ASSIGN(FindObjectVisitor); | 78 DISALLOW_COPY_AND_ASSIGN(FindObjectVisitor); |
81 }; | 79 }; |
82 | 80 |
83 } // namespace dart | 81 } // namespace dart |
84 | 82 |
85 #endif // RUNTIME_VM_VISITOR_H_ | 83 #endif // RUNTIME_VM_VISITOR_H_ |
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