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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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