| OLD | NEW |
| 1 // Copyright 2008 the V8 project authors. All rights reserved. | 1 // Copyright 2008 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
| (...skipping 25 matching lines...) Expand all Loading... |
| 36 | 36 |
| 37 // Called when allocation routines fail to allocate. | 37 // Called when allocation routines fail to allocate. |
| 38 // This function should not return, but should terminate the current | 38 // This function should not return, but should terminate the current |
| 39 // processing. | 39 // processing. |
| 40 void FatalProcessOutOfMemory(const char* message); | 40 void FatalProcessOutOfMemory(const char* message); |
| 41 | 41 |
| 42 // A class that controls whether allocation is allowed. This is for | 42 // A class that controls whether allocation is allowed. This is for |
| 43 // the C++ heap only! | 43 // the C++ heap only! |
| 44 class NativeAllocationChecker { | 44 class NativeAllocationChecker { |
| 45 public: | 45 public: |
| 46 typedef enum { ALLOW, DISALLOW } NativeAllocationAllowed; | 46 enum NativeAllocationAllowed { ALLOW, DISALLOW }; |
| 47 explicit inline NativeAllocationChecker(NativeAllocationAllowed allowed) | |
| 48 : allowed_(allowed) { | |
| 49 #ifdef DEBUG | 47 #ifdef DEBUG |
| 50 if (allowed == DISALLOW) { | 48 explicit NativeAllocationChecker(NativeAllocationAllowed allowed); |
| 51 allocation_disallowed_++; | 49 ~NativeAllocationChecker(); |
| 52 } | 50 static bool allocation_allowed(); |
| 53 #endif | |
| 54 } | |
| 55 ~NativeAllocationChecker() { | |
| 56 #ifdef DEBUG | |
| 57 if (allowed_ == DISALLOW) { | |
| 58 allocation_disallowed_--; | |
| 59 } | |
| 60 #endif | |
| 61 ASSERT(allocation_disallowed_ >= 0); | |
| 62 } | |
| 63 static inline bool allocation_allowed() { | |
| 64 return allocation_disallowed_ == 0; | |
| 65 } | |
| 66 private: | 51 private: |
| 67 // This static counter ensures that NativeAllocationCheckers can be nested. | |
| 68 static int allocation_disallowed_; | |
| 69 // This flag applies to this particular instance. | 52 // This flag applies to this particular instance. |
| 70 NativeAllocationAllowed allowed_; | 53 NativeAllocationAllowed allowed_; |
| 54 #else |
| 55 explicit inline NativeAllocationChecker(NativeAllocationAllowed allowed) {} |
| 56 static inline bool allocation_allowed() { return true; } |
| 57 #endif |
| 71 }; | 58 }; |
| 72 | 59 |
| 73 | 60 |
| 74 // Superclass for classes managed with new & delete. | 61 // Superclass for classes managed with new & delete. |
| 75 class Malloced { | 62 class Malloced { |
| 76 public: | 63 public: |
| 77 void* operator new(size_t size) { return New(size); } | 64 void* operator new(size_t size) { return New(size); } |
| 78 void operator delete(void* p) { Delete(p); } | 65 void operator delete(void* p) { Delete(p); } |
| 79 | 66 |
| 80 static void FatalProcessOutOfMemory(); | 67 static void FatalProcessOutOfMemory(); |
| (...skipping 58 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 139 class FreeStoreAllocationPolicy { | 126 class FreeStoreAllocationPolicy { |
| 140 public: | 127 public: |
| 141 INLINE(static void* New(size_t size)) { return Malloced::New(size); } | 128 INLINE(static void* New(size_t size)) { return Malloced::New(size); } |
| 142 INLINE(static void Delete(void* p)) { Malloced::Delete(p); } | 129 INLINE(static void Delete(void* p)) { Malloced::Delete(p); } |
| 143 }; | 130 }; |
| 144 | 131 |
| 145 | 132 |
| 146 // Allocation policy for allocating in preallocated space. | 133 // Allocation policy for allocating in preallocated space. |
| 147 // Used as an allocation policy for ScopeInfo when generating | 134 // Used as an allocation policy for ScopeInfo when generating |
| 148 // stack traces. | 135 // stack traces. |
| 149 class PreallocatedStorage : public AllStatic { | 136 class PreallocatedStorage { |
| 150 public: | 137 public: |
| 151 explicit PreallocatedStorage(size_t size); | 138 explicit PreallocatedStorage(size_t size); |
| 152 size_t size() { return size_; } | 139 size_t size() { return size_; } |
| 153 static void* New(size_t size); | |
| 154 static void Delete(void* p); | |
| 155 | 140 |
| 156 // Preallocate a set number of bytes. | 141 // TODO(isolates): Get rid of these-- we'll have to change the allocator |
| 157 static void Init(size_t size); | 142 // interface to include a pointer to an isolate to do this |
| 143 // efficiently. |
| 144 static inline void* New(size_t size); |
| 145 static inline void Delete(void* p); |
| 158 | 146 |
| 159 private: | 147 private: |
| 160 size_t size_; | 148 size_t size_; |
| 161 PreallocatedStorage* previous_; | 149 PreallocatedStorage* previous_; |
| 162 PreallocatedStorage* next_; | 150 PreallocatedStorage* next_; |
| 163 static bool preallocated_; | |
| 164 | |
| 165 static PreallocatedStorage in_use_list_; | |
| 166 static PreallocatedStorage free_list_; | |
| 167 | 151 |
| 168 void LinkTo(PreallocatedStorage* other); | 152 void LinkTo(PreallocatedStorage* other); |
| 169 void Unlink(); | 153 void Unlink(); |
| 154 |
| 155 friend class Isolate; |
| 156 |
| 170 DISALLOW_IMPLICIT_CONSTRUCTORS(PreallocatedStorage); | 157 DISALLOW_IMPLICIT_CONSTRUCTORS(PreallocatedStorage); |
| 171 }; | 158 }; |
| 172 | 159 |
| 173 | 160 |
| 174 } } // namespace v8::internal | 161 } } // namespace v8::internal |
| 175 | 162 |
| 176 #endif // V8_ALLOCATION_H_ | 163 #endif // V8_ALLOCATION_H_ |
| OLD | NEW |