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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_HANDLES_H_ | 5 #ifndef VM_HANDLES_H_ |
| 6 #define VM_HANDLES_H_ | 6 #define VM_HANDLES_H_ |
| 7 | 7 |
| 8 #include "vm/allocation.h" | 8 #include "vm/allocation.h" |
| 9 | 9 |
| 10 namespace dart { | 10 namespace dart { |
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| 259 // It is used as follows: | 259 // It is used as follows: |
| 260 // { | 260 // { |
| 261 // HANDLESCOPE(isolate); | 261 // HANDLESCOPE(isolate); |
| 262 // .... | 262 // .... |
| 263 // ..... | 263 // ..... |
| 264 // code that creates some scoped handles. | 264 // code that creates some scoped handles. |
| 265 // .... | 265 // .... |
| 266 // } | 266 // } |
| 267 class HandleScope : public StackResource { | 267 class HandleScope : public StackResource { |
| 268 public: | 268 public: |
| 269 explicit HandleScope(Isolate* isolate); | 269 explicit HandleScope(BaseIsolate* isolate); |
| 270 ~HandleScope(); | 270 ~HandleScope(); |
| 271 | 271 |
| 272 private: | 272 private: |
| 273 VMHandles::HandlesBlock* saved_handle_block_; // Handle block at prev scope. | 273 VMHandles::HandlesBlock* saved_handle_block_; // Handle block at prev scope. |
| 274 uword saved_handle_slot_; // Next available handle slot at previous scope. | 274 uword saved_handle_slot_; // Next available handle slot at previous scope. |
| 275 #if defined(DEBUG) | 275 #if defined(DEBUG) |
| 276 HandleScope* link_; // Link to previous scope. | 276 HandleScope* link_; // Link to previous scope. |
| 277 #endif | 277 #endif |
| 278 DISALLOW_IMPLICIT_CONSTRUCTORS(HandleScope); | 278 DISALLOW_IMPLICIT_CONSTRUCTORS(HandleScope); |
| 279 }; | 279 }; |
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| 291 // { | 291 // { |
| 292 // NOHANDLESCOPE(isolate); | 292 // NOHANDLESCOPE(isolate); |
| 293 // .... | 293 // .... |
| 294 // ..... | 294 // ..... |
| 295 // critical code that manipulates dart objects directly. | 295 // critical code that manipulates dart objects directly. |
| 296 // .... | 296 // .... |
| 297 // } | 297 // } |
| 298 #if defined(DEBUG) | 298 #if defined(DEBUG) |
| 299 class NoHandleScope : public StackResource { | 299 class NoHandleScope : public StackResource { |
| 300 public: | 300 public: |
| 301 explicit NoHandleScope(Isolate* isolate); | 301 explicit NoHandleScope(BaseIsolate* isolate); |
| 302 ~NoHandleScope(); | 302 ~NoHandleScope(); |
| 303 | 303 |
| 304 private: | 304 private: |
| 305 DISALLOW_IMPLICIT_CONSTRUCTORS(NoHandleScope); | 305 DISALLOW_IMPLICIT_CONSTRUCTORS(NoHandleScope); |
| 306 }; | 306 }; |
| 307 #else // defined(DEBUG) | 307 #else // defined(DEBUG) |
| 308 class NoHandleScope : public ValueObject { | 308 class NoHandleScope : public ValueObject { |
| 309 public: | 309 public: |
| 310 explicit NoHandleScope(Isolate* isolate) { } | 310 explicit NoHandleScope(BaseIsolate* isolate) { } |
| 311 ~NoHandleScope() { } | 311 ~NoHandleScope() { } |
| 312 | 312 |
| 313 private: | 313 private: |
| 314 DISALLOW_IMPLICIT_CONSTRUCTORS(NoHandleScope); | 314 DISALLOW_IMPLICIT_CONSTRUCTORS(NoHandleScope); |
| 315 }; | 315 }; |
| 316 #endif // defined(DEBUG) | 316 #endif // defined(DEBUG) |
| 317 | 317 |
| 318 // Macro to start a no handles scope in the code. | 318 // Macro to start a no handles scope in the code. |
| 319 #define NOHANDLESCOPE(isolate) \ | 319 #define NOHANDLESCOPE(isolate) \ |
| 320 dart::NoHandleScope no_vm_internal_handles_scope_(isolate); | 320 dart::NoHandleScope no_vm_internal_handles_scope_(isolate); |
| 321 | 321 |
| 322 } // namespace dart | 322 } // namespace dart |
| 323 | 323 |
| 324 #endif // VM_HANDLES_H_ | 324 #endif // VM_HANDLES_H_ |
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