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Issue 8851008: Add support for interrupting an isolate in the vm. Interrupts are (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/
Patch Set: '' Created 9 years ago
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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 #include "vm/code_generator.h" 5 #include "vm/code_generator.h"
6 6
7 #include "vm/code_index_table.h" 7 #include "vm/code_index_table.h"
8 #include "vm/code_patcher.h" 8 #include "vm/code_patcher.h"
9 #include "vm/compiler.h" 9 #include "vm/compiler.h"
10 #include "vm/dart_api_impl.h" 10 #include "vm/dart_api_impl.h"
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814 ASSERT(arguments.Count() == 814 ASSERT(arguments.Count() ==
815 kClosureArgumentMismatchRuntimeEntry.argument_count()); 815 kClosureArgumentMismatchRuntimeEntry.argument_count());
816 GrowableArray<const Object*> args; 816 GrowableArray<const Object*> args;
817 Exceptions::ThrowByType(Exceptions::kClosureArgumentMismatch, args); 817 Exceptions::ThrowByType(Exceptions::kClosureArgumentMismatch, args);
818 } 818 }
819 819
820 820
821 DEFINE_RUNTIME_ENTRY(StackOverflow, 0) { 821 DEFINE_RUNTIME_ENTRY(StackOverflow, 0) {
822 ASSERT(arguments.Count() == 822 ASSERT(arguments.Count() ==
823 kStackOverflowRuntimeEntry.argument_count()); 823 kStackOverflowRuntimeEntry.argument_count());
824 // Use a preallocated stack overflow exception to avoid calling into 824 uword stack_pos;
825 // dart code. 825 stack_pos = (uword) &stack_pos;
826 const Instance& exception = 826
827 Instance::Handle(isolate->object_store()->stack_overflow()); 827 // If an interrupt happens at the same time as a stack overflow, we
828 Exceptions::Throw(exception); 828 // process the stack overflow first.
829 UNREACHABLE(); 829 if (stack_pos < isolate->saved_stack_limit()) {
830 // Use a preallocated stack overflow exception to avoid calling
831 // into dart code.
832 const Instance& exception =
833 Instance::Handle(isolate->object_store()->stack_overflow());
834 Exceptions::Throw(exception);
835 UNREACHABLE();
836 }
837
838 uword interrupt_bits = isolate->GetAndClearInterrupts();
839 if (interrupt_bits & Isolate::kApiInterrupt) {
840 Dart_IsolateInterruptCallback callback = isolate->InterruptCallback();
841 if (callback) {
842 if ((*callback)()) {
843 return;
844 } else {
845 UNIMPLEMENTED();
846 }
847 }
848 }
830 } 849 }
831 850
832 851
833 // Only unoptimized code has invocation counter threshold checking. 852 // Only unoptimized code has invocation counter threshold checking.
834 // Once the invocation counter threshold is reached any entry into the 853 // Once the invocation counter threshold is reached any entry into the
835 // unoptimized code is redirected to this function. 854 // unoptimized code is redirected to this function.
836 DEFINE_RUNTIME_ENTRY(OptimizeInvokedFunction, 1) { 855 DEFINE_RUNTIME_ENTRY(OptimizeInvokedFunction, 1) {
837 ASSERT(arguments.Count() == 856 ASSERT(arguments.Count() ==
838 kOptimizeInvokedFunctionRuntimeEntry.argument_count()); 857 kOptimizeInvokedFunctionRuntimeEntry.argument_count());
839 const Function& function = Function::CheckedHandle(arguments.At(0)); 858 const Function& function = Function::CheckedHandle(arguments.At(0));
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1038 } 1057 }
1039 } 1058 }
1040 } 1059 }
1041 // The cache is null terminated, therefore the loop above should never 1060 // The cache is null terminated, therefore the loop above should never
1042 // terminate by itself. 1061 // terminate by itself.
1043 UNREACHABLE(); 1062 UNREACHABLE();
1044 return Code::null(); 1063 return Code::null();
1045 } 1064 }
1046 1065
1047 } // namespace dart 1066 } // namespace dart
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