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| 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, 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/weak_code.h" | 5 #include "vm/weak_code.h" |
| 6 | 6 |
| 7 #include "platform/assert.h" | 7 #include "platform/assert.h" |
| 8 | 8 |
| 9 #include "vm/code_generator.h" | 9 #include "vm/code_generator.h" |
| 10 #include "vm/code_patcher.h" | 10 #include "vm/code_patcher.h" |
| 11 #include "vm/compiler.h" | 11 #include "vm/compiler.h" |
| 12 #include "vm/object.h" | 12 #include "vm/object.h" |
| 13 #include "vm/stack_frame.h" | 13 #include "vm/stack_frame.h" |
| 14 | 14 |
| 15 namespace dart { | 15 namespace dart { |
| 16 | 16 |
| 17 DECLARE_FLAG(bool, precompilation); |
| 18 |
| 17 bool WeakCodeReferences::HasCodes() const { | 19 bool WeakCodeReferences::HasCodes() const { |
| 18 return !array_.IsNull() && (array_.Length() > 0); | 20 return !array_.IsNull() && (array_.Length() > 0); |
| 19 } | 21 } |
| 20 | 22 |
| 21 | 23 |
| 22 void WeakCodeReferences::Register(const Code& value) { | 24 void WeakCodeReferences::Register(const Code& value) { |
| 23 if (!array_.IsNull()) { | 25 if (!array_.IsNull()) { |
| 24 // Try to find and reuse cleared WeakProperty to avoid allocating new one. | 26 // Try to find and reuse cleared WeakProperty to avoid allocating new one. |
| 25 WeakProperty& weak_property = WeakProperty::Handle(); | 27 WeakProperty& weak_property = WeakProperty::Handle(); |
| 26 for (intptr_t i = 0; i < array_.Length(); i++) { | 28 for (intptr_t i = 0; i < array_.Length(); i++) { |
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| 60 return false; | 62 return false; |
| 61 } | 63 } |
| 62 | 64 |
| 63 | 65 |
| 64 void WeakCodeReferences::DisableCode() { | 66 void WeakCodeReferences::DisableCode() { |
| 65 IncrementInvalidationGen(); | 67 IncrementInvalidationGen(); |
| 66 const Array& code_objects = Array::Handle(array_.raw()); | 68 const Array& code_objects = Array::Handle(array_.raw()); |
| 67 if (code_objects.IsNull()) { | 69 if (code_objects.IsNull()) { |
| 68 return; | 70 return; |
| 69 } | 71 } |
| 70 ASSERT(Compiler::allow_recompilation()); | 72 ASSERT(!FLAG_precompilation); |
| 71 UpdateArrayTo(Object::null_array()); | 73 UpdateArrayTo(Object::null_array()); |
| 72 // Disable all code on stack. | 74 // Disable all code on stack. |
| 73 Code& code = Code::Handle(); | 75 Code& code = Code::Handle(); |
| 74 { | 76 { |
| 75 DartFrameIterator iterator; | 77 DartFrameIterator iterator; |
| 76 StackFrame* frame = iterator.NextFrame(); | 78 StackFrame* frame = iterator.NextFrame(); |
| 77 while (frame != NULL) { | 79 while (frame != NULL) { |
| 78 code = frame->LookupDartCode(); | 80 code = frame->LookupDartCode(); |
| 79 if (IsOptimizedCode(code_objects, code)) { | 81 if (IsOptimizedCode(code_objects, code)) { |
| 80 ReportDeoptimization(code); | 82 ReportDeoptimization(code); |
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| 129 // Make non-OSR code non-entrant. | 131 // Make non-OSR code non-entrant. |
| 130 if (!code.IsDisabled()) { | 132 if (!code.IsDisabled()) { |
| 131 ReportSwitchingCode(code); | 133 ReportSwitchingCode(code); |
| 132 code.DisableDartCode(); | 134 code.DisableDartCode(); |
| 133 } | 135 } |
| 134 } | 136 } |
| 135 } | 137 } |
| 136 } | 138 } |
| 137 | 139 |
| 138 } // namespace dart | 140 } // namespace dart |
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