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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, 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 #include "vm/snapshot.h" | 5 #include "vm/snapshot.h" |
6 | 6 |
7 #include "platform/assert.h" | 7 #include "platform/assert.h" |
8 #include "vm/bigint_operations.h" | 8 #include "vm/bigint_operations.h" |
9 #include "vm/bootstrap.h" | 9 #include "vm/bootstrap.h" |
10 #include "vm/class_finalizer.h" | 10 #include "vm/class_finalizer.h" |
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167 | 167 |
168 | 168 |
169 RawObject* SnapshotReader::ReadObject() { | 169 RawObject* SnapshotReader::ReadObject() { |
170 const Instance& null_object = Instance::Handle(); | 170 const Instance& null_object = Instance::Handle(); |
171 *ErrorHandle() = UnhandledException::New(null_object, null_object); | 171 *ErrorHandle() = UnhandledException::New(null_object, null_object); |
172 // Setup for long jump in case there is an exception while reading. | 172 // Setup for long jump in case there is an exception while reading. |
173 LongJumpScope jump; | 173 LongJumpScope jump; |
174 if (setjmp(*jump.Set()) == 0) { | 174 if (setjmp(*jump.Set()) == 0) { |
175 Object& obj = Object::Handle(ReadObjectImpl()); | 175 Object& obj = Object::Handle(ReadObjectImpl()); |
176 for (intptr_t i = 0; i < backward_references_.length(); i++) { | 176 for (intptr_t i = 0; i < backward_references_.length(); i++) { |
177 if (!backward_references_[i]->is_deserialized()) { | 177 if (!backward_references_[i].is_deserialized()) { |
178 ReadObjectImpl(); | 178 ReadObjectImpl(); |
179 backward_references_[i]->set_state(kIsDeserialized); | 179 backward_references_[i].set_state(kIsDeserialized); |
180 } | 180 } |
181 } | 181 } |
182 return obj.raw(); | 182 return obj.raw(); |
183 } else { | 183 } else { |
184 // An error occurred while reading, return the error object. | 184 // An error occurred while reading, return the error object. |
185 const Error& err = Error::Handle(isolate()->object_store()->sticky_error()); | 185 const Error& err = Error::Handle(isolate()->object_store()->sticky_error()); |
186 isolate()->object_store()->clear_sticky_error(); | 186 isolate()->object_store()->clear_sticky_error(); |
187 return err.raw(); | 187 return err.raw(); |
188 } | 188 } |
189 } | 189 } |
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334 } | 334 } |
335 return obj_.raw(); | 335 return obj_.raw(); |
336 } | 336 } |
337 | 337 |
338 | 338 |
339 void SnapshotReader::AddBackRef(intptr_t id, | 339 void SnapshotReader::AddBackRef(intptr_t id, |
340 Object* obj, | 340 Object* obj, |
341 DeserializeState state) { | 341 DeserializeState state) { |
342 intptr_t index = (id - kMaxPredefinedObjectIds); | 342 intptr_t index = (id - kMaxPredefinedObjectIds); |
343 ASSERT(index == backward_references_.length()); | 343 ASSERT(index == backward_references_.length()); |
344 BackRefNode* node = new BackRefNode(obj, state); | 344 BackRefNode node(obj, state); |
345 ASSERT(node != NULL); | |
346 backward_references_.Add(node); | 345 backward_references_.Add(node); |
347 } | 346 } |
348 | 347 |
349 | 348 |
350 Object* SnapshotReader::GetBackRef(intptr_t id) { | 349 Object* SnapshotReader::GetBackRef(intptr_t id) { |
351 ASSERT(id >= kMaxPredefinedObjectIds); | 350 ASSERT(id >= kMaxPredefinedObjectIds); |
352 intptr_t index = (id - kMaxPredefinedObjectIds); | 351 intptr_t index = (id - kMaxPredefinedObjectIds); |
353 if (index < backward_references_.length()) { | 352 if (index < backward_references_.length()) { |
354 return backward_references_[index]->reference(); | 353 return backward_references_[index].reference(); |
355 } | 354 } |
356 return NULL; | 355 return NULL; |
357 } | 356 } |
358 | 357 |
359 | 358 |
360 void SnapshotReader::ReadFullSnapshot() { | 359 void SnapshotReader::ReadFullSnapshot() { |
361 ASSERT(kind_ == Snapshot::kFull); | 360 ASSERT(kind_ == Snapshot::kFull); |
362 Isolate* isolate = Isolate::Current(); | 361 Isolate* isolate = Isolate::Current(); |
363 ASSERT(isolate != NULL); | 362 ASSERT(isolate != NULL); |
364 ObjectStore* object_store = isolate->object_store(); | 363 ObjectStore* object_store = isolate->object_store(); |
365 ASSERT(object_store != NULL); | 364 ASSERT(object_store != NULL); |
366 NoGCScope no_gc; | 365 NoGCScope no_gc; |
367 | 366 |
368 // TODO(asiva): Add a check here to ensure we have the right heap | 367 // TODO(asiva): Add a check here to ensure we have the right heap |
369 // size for the full snapshot being read. | 368 // size for the full snapshot being read. |
370 | 369 |
371 // Read in all the objects stored in the object store. | 370 // Read in all the objects stored in the object store. |
372 intptr_t num_flds = (object_store->to() - object_store->from()); | 371 intptr_t num_flds = (object_store->to() - object_store->from()); |
373 for (intptr_t i = 0; i <= num_flds; i++) { | 372 for (intptr_t i = 0; i <= num_flds; i++) { |
374 *(object_store->from() + i) = ReadObjectImpl(); | 373 *(object_store->from() + i) = ReadObjectImpl(); |
375 } | 374 } |
376 for (intptr_t i = 0; i < backward_references_.length(); i++) { | 375 for (intptr_t i = 0; i < backward_references_.length(); i++) { |
377 if (!backward_references_[i]->is_deserialized()) { | 376 if (!backward_references_[i].is_deserialized()) { |
378 ReadObjectImpl(); | 377 ReadObjectImpl(); |
379 backward_references_[i]->set_state(kIsDeserialized); | 378 backward_references_[i].set_state(kIsDeserialized); |
380 } | 379 } |
381 } | 380 } |
382 | 381 |
383 // Validate the class table. | 382 // Validate the class table. |
384 #if defined(DEBUG) | 383 #if defined(DEBUG) |
385 isolate->ValidateClassTable(); | 384 isolate->ValidateClassTable(); |
386 #endif | 385 #endif |
387 | 386 |
388 // Setup native resolver for bootstrap impl. | 387 // Setup native resolver for bootstrap impl. |
389 Bootstrap::SetupNativeResolver(); | 388 Bootstrap::SetupNativeResolver(); |
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1573 NoGCScope no_gc; | 1572 NoGCScope no_gc; |
1574 WriteObject(obj.raw()); | 1573 WriteObject(obj.raw()); |
1575 UnmarkAll(); | 1574 UnmarkAll(); |
1576 } else { | 1575 } else { |
1577 ThrowException(exception_type(), exception_msg()); | 1576 ThrowException(exception_type(), exception_msg()); |
1578 } | 1577 } |
1579 } | 1578 } |
1580 | 1579 |
1581 | 1580 |
1582 } // namespace dart | 1581 } // namespace dart |
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