asiva@google.com
b4d9e0d620
native functions do not have to call Dart_EnterScope/Dart_ExitScope when they callback into the VM. Remove Dart_EnterScope/Dart_ExitScope calls around native functions in 'bin' directory. R=regis@google.com, srdjan@google.com Review URL: https://codereview.chromium.org//22303002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@25827 260f80e4-7a28-3924-810f-c04153c831b5
105 lines
5.0 KiB
C++
105 lines
5.0 KiB
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef VM_NATIVE_ENTRY_H_
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#define VM_NATIVE_ENTRY_H_
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#include "vm/allocation.h"
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#include "vm/assembler.h"
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#include "vm/code_generator.h"
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#include "vm/exceptions.h"
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#include "vm/native_arguments.h"
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#include "vm/verifier.h"
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#include "include/dart_api.h"
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namespace dart {
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// Forward declarations.
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class Class;
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class String;
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typedef void (*NativeFunction)(NativeArguments* arguments);
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#define NATIVE_ENTRY_FUNCTION(name) BootstrapNatives::DN_##name
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#ifdef DEBUG
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#define SET_NATIVE_RETVAL(args, value) \
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RawObject* retval = value; \
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ASSERT(retval->IsDartInstance()); \
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arguments->SetReturnUnsafe(retval);
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#else
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#define SET_NATIVE_RETVAL(arguments, value) \
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arguments->SetReturnUnsafe(value);
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#endif
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#define DEFINE_NATIVE_ENTRY(name, argument_count) \
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static RawObject* DN_Helper##name(Isolate* isolate, \
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NativeArguments* arguments); \
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void NATIVE_ENTRY_FUNCTION(name)(Dart_NativeArguments args) { \
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CHECK_STACK_ALIGNMENT; \
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VERIFY_ON_TRANSITION; \
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NativeArguments* arguments = reinterpret_cast<NativeArguments*>(args); \
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ASSERT(arguments->NativeArgCount() == argument_count); \
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TRACE_NATIVES(""#name); \
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{ \
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StackZone zone(arguments->isolate()); \
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SET_NATIVE_RETVAL(arguments, \
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DN_Helper##name(arguments->isolate(), arguments)); \
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DEOPTIMIZE_ALOT; \
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} \
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VERIFY_ON_TRANSITION; \
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} \
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static RawObject* DN_Helper##name(Isolate* isolate, \
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NativeArguments* arguments)
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// Natives should throw an exception if an illegal argument or null is passed.
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// type name = value.
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#define GET_NON_NULL_NATIVE_ARGUMENT(type, name, value) \
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const Instance& __##name##_instance__ = \
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Instance::CheckedHandle(isolate, value); \
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if (!__##name##_instance__.Is##type()) { \
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const Array& __args__ = Array::Handle(Array::New(1)); \
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__args__.SetAt(0, __##name##_instance__); \
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Exceptions::ThrowByType(Exceptions::kArgument, __args__); \
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} \
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const type& name = type::Cast(__##name##_instance__);
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// Natives should throw an exception if an illegal argument is passed.
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// type name = value.
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#define GET_NATIVE_ARGUMENT(type, name, value) \
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const Instance& __##name##_instance__ = \
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Instance::CheckedHandle(isolate, value); \
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type& name = type::Handle(isolate); \
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if (!__##name##_instance__.IsNull()) { \
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if (!__##name##_instance__.Is##type()) { \
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const Array& __args__ = Array::Handle(Array::New(1)); \
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__args__.SetAt(0, __##name##_instance__); \
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Exceptions::ThrowByType(Exceptions::kArgument, __args__); \
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} \
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} \
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name ^= value;
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// Helper class for resolving and handling native functions.
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class NativeEntry : public AllStatic {
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public:
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static const intptr_t kNumCallWrapperArguments = 2;
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// Resolve specified dart native function to the actual native entrypoint.
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static NativeFunction ResolveNative(const Library& library,
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const String& function_name,
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int number_of_arguments);
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static void NativeCallWrapper(Dart_NativeArguments args,
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Dart_NativeFunction func);
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static const ExternalLabel& NativeCallWrapperLabel();
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};
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} // namespace dart
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#endif // VM_NATIVE_ENTRY_H_
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