Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/memory/allocation.hpp
src/share/vm/memory/allocation.hpp
- changeset 2043
- 2dfd013a7465
- parent 2040
- 0e35fa8ebccd
- child 2044
- f4f596978298
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| 2042:fb8abd207dbe | 2043:2dfd013a7465 |
|---|---|
| 315 // new or delete (allocation_type is unknown). If new is used to allocate, | 315 // new or delete (allocation_type is unknown). If new is used to allocate, |
| 316 // use delete to deallocate. | 316 // use delete to deallocate. |
| 317 class ResourceObj ALLOCATION_SUPER_CLASS_SPEC { | 317 class ResourceObj ALLOCATION_SUPER_CLASS_SPEC { |
| 318 public: | 318 public: |
| 319 enum allocation_type { STACK_OR_EMBEDDED = 0, RESOURCE_AREA, C_HEAP, ARENA, allocation_mask = 0x3 }; | 319 enum allocation_type { STACK_OR_EMBEDDED = 0, RESOURCE_AREA, C_HEAP, ARENA, allocation_mask = 0x3 }; |
| 320 static void set_allocation_type(address res, allocation_type type) NOT_DEBUG_RETURN; | |
| 320 #ifdef ASSERT | 321 #ifdef ASSERT |
| 321 private: | 322 private: |
| 322 // When this object is allocated on stack the new() operator is not | 323 // When this object is allocated on stack the new() operator is not |
| 323 // called but garbage on stack may look like a valid allocation_type. | 324 // called but garbage on stack may look like a valid allocation_type. |
| 324 // Store negated 'this' pointer when new() is called to distinguish cases. | 325 // Store negated 'this' pointer when new() is called to distinguish cases. |
| 325 uintptr_t _allocation; | 326 uintptr_t _allocation; |
| 326 public: | 327 public: |
| 327 static void set_allocation_type(address res, allocation_type type); | 328 allocation_type get_allocation_type() const; |
| 328 allocation_type get_allocation_type(); | 329 bool allocated_on_stack() const { return get_allocation_type() == STACK_OR_EMBEDDED; } |
| 329 bool allocated_on_stack() { return get_allocation_type() == STACK_OR_EMBEDDED; } | 330 bool allocated_on_res_area() const { return get_allocation_type() == RESOURCE_AREA; } |
| 330 bool allocated_on_res_area() { return get_allocation_type() == RESOURCE_AREA; } | 331 bool allocated_on_C_heap() const { return get_allocation_type() == C_HEAP; } |
| 331 bool allocated_on_C_heap() { return get_allocation_type() == C_HEAP; } | 332 bool allocated_on_arena() const { return get_allocation_type() == ARENA; } |
| 332 bool allocated_on_arena() { return get_allocation_type() == ARENA; } | |
| 333 ResourceObj(); // default construtor | 333 ResourceObj(); // default construtor |
| 334 ResourceObj(const ResourceObj& r); // default copy construtor | 334 ResourceObj(const ResourceObj& r); // default copy construtor |
| 335 ResourceObj& operator=(const ResourceObj& r); // default copy assignment | 335 ResourceObj& operator=(const ResourceObj& r); // default copy assignment |
| 336 ~ResourceObj(); | 336 ~ResourceObj(); |
| 337 #endif // ASSERT | 337 #endif // ASSERT |
| 344 return res; | 344 return res; |
| 345 } | 345 } |
| 346 void* operator new(size_t size) { | 346 void* operator new(size_t size) { |
| 347 address res = (address)resource_allocate_bytes(size); | 347 address res = (address)resource_allocate_bytes(size); |
| 348 DEBUG_ONLY(set_allocation_type(res, RESOURCE_AREA);) | 348 DEBUG_ONLY(set_allocation_type(res, RESOURCE_AREA);) |
| 349 return res; | |
| 350 } | |
| 351 void* operator new(size_t size, void* where, allocation_type type) { | |
| 352 address res = (address)where; | |
| 353 DEBUG_ONLY(set_allocation_type(res, type);) | |
| 354 return res; | 349 return res; |
| 355 } | 350 } |
| 356 void operator delete(void* p); | 351 void operator delete(void* p); |
| 357 }; | 352 }; |
| 358 | 353 |
