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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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