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// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#include "vm/dart_entry.h"
#include "platform/safe_stack.h"
#include "vm/class_finalizer.h"
#include "vm/compiler/frontend/bytecode_reader.h"
#include "vm/compiler/jit/compiler.h"
#include "vm/debugger.h"
#include "vm/heap/safepoint.h"
#include "vm/interpreter.h"
#include "vm/object_store.h"
#include "vm/resolver.h"
#include "vm/runtime_entry.h"
#include "vm/simulator.h"
#include "vm/stub_code.h"
#include "vm/symbols.h"
namespace dart {
DECLARE_FLAG(bool, enable_interpreter);
// A cache of VM heap allocated arguments descriptors.
RawArray* ArgumentsDescriptor::cached_args_descriptors_[kCachedDescriptorCount];
RawObject* DartEntry::InvokeFunction(const Function& function,
const Array& arguments) {
ASSERT(Thread::Current()->IsMutatorThread());
const int kTypeArgsLen = 0; // No support to pass type args to generic func.
const Array& arguments_descriptor =
Array::Handle(ArgumentsDescriptor::New(kTypeArgsLen, arguments.Length()));
return InvokeFunction(function, arguments, arguments_descriptor);
}
class ScopedIsolateStackLimits : public ValueObject {
public:
NO_SANITIZE_SAFE_STACK
explicit ScopedIsolateStackLimits(Thread* thread, uword current_sp)
: thread_(thread),
#if defined(USING_SAFE_STACK)
saved_stack_limit_(0),
saved_safestack_limit_(0)
#else
saved_stack_limit_(0)
#endif
{
ASSERT(thread != NULL);
// Set the thread's stack_base based on the current
// stack pointer, we keep refining this value as we
// see higher stack pointers (Note: we assume the stack
// grows from high to low addresses).
OSThread* os_thread = thread->os_thread();
ASSERT(os_thread != NULL);
os_thread->RefineStackBoundsFromSP(current_sp);
// Save the Thread's current stack limit and adjust the stack limit.
ASSERT(thread->isolate() == Isolate::Current());
saved_stack_limit_ = thread->saved_stack_limit();
#if defined(USING_SIMULATOR)
thread->SetStackLimit(Simulator::Current()->stack_limit());
#else
thread->SetStackLimit(OSThread::Current()->stack_limit_with_headroom());
// TODO(regis): For now, the interpreter is using its own stack limit.
#endif
#if defined(USING_SAFE_STACK)
saved_safestack_limit_ = OSThread::GetCurrentSafestackPointer();
thread->set_saved_safestack_limit(saved_safestack_limit_);
#endif
}
~ScopedIsolateStackLimits() {
ASSERT(thread_->isolate() == Isolate::Current());
// Since we started with a stack limit of 0 we should be getting back
// to a stack limit of 0 when all nested invocations are done and
// we have bottomed out.
thread_->SetStackLimit(saved_stack_limit_);
#if defined(USING_SAFE_STACK)
thread_->set_saved_safestack_limit(saved_safestack_limit_);
#endif
}
private:
Thread* thread_;
uword saved_stack_limit_;
#if defined(USING_SAFE_STACK)
uword saved_safestack_limit_;
#endif
};
// Clears/restores Thread::long_jump_base on construction/destruction.
// Ensures that we do not attempt to long jump across Dart frames.
class SuspendLongJumpScope : public StackResource {
public:
explicit SuspendLongJumpScope(Thread* thread)
: StackResource(thread), saved_long_jump_base_(thread->long_jump_base()) {
thread->set_long_jump_base(NULL);
}
~SuspendLongJumpScope() {
ASSERT(thread()->long_jump_base() == NULL);
thread()->set_long_jump_base(saved_long_jump_base_);
}
private:
LongJumpScope* saved_long_jump_base_;
};
NO_SANITIZE_SAFE_STACK
RawObject* DartEntry::InvokeFunction(const Function& function,
const Array& arguments,
const Array& arguments_descriptor,
uword current_sp) {
// We use a kernel2kernel constant evaluator in Dart 2.0 AOT compilation
// and never start the VM service isolate. So we should never end up invoking
// any dart code in the Dart 2.0 AOT compiler.
#if !defined(DART_PRECOMPILED_RUNTIME)
if (FLAG_precompiled_mode) {
UNREACHABLE();
}
#endif // !defined(DART_PRECOMPILED_RUNTIME)
ASSERT(!function.IsNull());
// Get the entrypoint corresponding to the function specified, this
// will result in a compilation of the function if it is not already
// compiled.
Thread* thread = Thread::Current();
Zone* zone = thread->zone();
ASSERT(thread->IsMutatorThread());
ScopedIsolateStackLimits stack_limit(thread, current_sp);
#if !defined(DART_PRECOMPILED_RUNTIME)
if (!function.HasCode()) {
if (FLAG_enable_interpreter && function.IsBytecodeAllowed(zone)) {
if (!function.HasBytecode()) {
RawError* error =
kernel::BytecodeReader::ReadFunctionBytecode(thread, function);
if (error != Error::null()) {
return error;
}
}
// If we have bytecode but no native code then invoke the interpreter.
if (function.HasBytecode()) {
ASSERT(thread->no_callback_scope_depth() == 0);
SuspendLongJumpScope suspend_long_jump_scope(thread);
TransitionToGenerated transition(thread);
return Interpreter::Current()->Call(function, arguments_descriptor,
arguments, thread);
}
// No bytecode, fall back to compilation.
}
const Object& result =
Object::Handle(zone, Compiler::CompileFunction(thread, function));
if (result.IsError()) {
return Error::Cast(result).raw();
}
// At this point we should have native code.
ASSERT(function.HasCode());
}
#endif // !defined(DART_PRECOMPILED_RUNTIME)
// Now Call the invoke stub which will invoke the dart function.
#if !defined(TARGET_ARCH_DBC)
invokestub entrypoint =
reinterpret_cast<invokestub>(StubCode::InvokeDartCode().EntryPoint());
#endif
const Code& code = Code::Handle(zone, function.CurrentCode());
ASSERT(!code.IsNull());
ASSERT(thread->no_callback_scope_depth() == 0);
SuspendLongJumpScope suspend_long_jump_scope(thread);
TransitionToGenerated transition(thread);
#if defined(TARGET_ARCH_DBC)
return Simulator::Current()->Call(code, arguments_descriptor, arguments,
thread);
#elif defined(USING_SIMULATOR)
return bit_copy<RawObject*, int64_t>(Simulator::Current()->Call(
reinterpret_cast<intptr_t>(entrypoint), reinterpret_cast<intptr_t>(&code),
reinterpret_cast<intptr_t>(&arguments_descriptor),
reinterpret_cast<intptr_t>(&arguments),
reinterpret_cast<intptr_t>(thread)));
#else
return entrypoint(code, arguments_descriptor, arguments, thread);
#endif
}
RawObject* DartEntry::InvokeClosure(const Array& arguments) {
const int kTypeArgsLen = 0; // No support to pass type args to generic func.
const Array& arguments_descriptor =
Array::Handle(ArgumentsDescriptor::New(kTypeArgsLen, arguments.Length()));
return InvokeClosure(arguments, arguments_descriptor);
}
RawObject* DartEntry::InvokeClosure(const Array& arguments,
const Array& arguments_descriptor) {
Thread* thread = Thread::Current();
Zone* zone = thread->zone();
const ArgumentsDescriptor args_desc(arguments_descriptor);
Instance& instance = Instance::Handle(zone);
instance ^= arguments.At(args_desc.FirstArgIndex());
// Get the entrypoint corresponding to the closure function or to the call
// method of the instance. This will result in a compilation of the function
// if it is not already compiled.
Function& function = Function::Handle(zone);
if (instance.IsCallable(&function)) {
// Only invoke the function if its arguments are compatible.
if (function.AreValidArgumentCounts(args_desc.TypeArgsLen(),
args_desc.Count(),
args_desc.NamedCount(), NULL)) {
// The closure or non-closure object (receiver) is passed as implicit
// first argument. It is already included in the arguments array.
return InvokeFunction(function, arguments, arguments_descriptor);
}
}
// There is no compatible 'call' method, see if there's a getter.
if (instance.IsClosure()) {
// Special case: closures are implemented with a call getter instead of a
// call method. If the arguments didn't match, go to noSuchMethod instead
// of infinitely recursing on the getter.
} else {
const String& getter_name = Symbols::GetCall();
Class& cls = Class::Handle(zone, instance.clazz());
while (!cls.IsNull()) {
function ^= cls.LookupDynamicFunction(getter_name);
if (!function.IsNull()) {
Isolate* isolate = thread->isolate();
if (!OSThread::Current()->HasStackHeadroom()) {
const Instance& exception =
Instance::Handle(zone, isolate->object_store()->stack_overflow());
return UnhandledException::New(exception, StackTrace::Handle(zone));
}
const Array& getter_arguments = Array::Handle(zone, Array::New(1));
getter_arguments.SetAt(0, instance);
const Object& getter_result = Object::Handle(
zone, DartEntry::InvokeFunction(function, getter_arguments));
if (getter_result.IsError()) {
return getter_result.raw();
}
ASSERT(getter_result.IsNull() || getter_result.IsInstance());
arguments.SetAt(0, getter_result);
// This otherwise unnecessary handle is used to prevent clang from
// doing tail call elimination, which would make the stack overflow
// check above ineffective.
Object& result = Object::Handle(
zone, InvokeClosure(arguments, arguments_descriptor));
return result.raw();
}
cls = cls.SuperClass();
}
}
// No compatible method or getter so invoke noSuchMethod.
return InvokeNoSuchMethod(instance, Symbols::Call(), arguments,
arguments_descriptor);
}
RawObject* DartEntry::InvokeNoSuchMethod(const Instance& receiver,
const String& target_name,
const Array& arguments,
const Array& arguments_descriptor) {
const ArgumentsDescriptor args_desc(arguments_descriptor);
ASSERT(receiver.raw() == arguments.At(args_desc.FirstArgIndex()));
// Allocate an Invocation object.
const Library& core_lib = Library::Handle(Library::CoreLibrary());
Class& invocation_mirror_class = Class::Handle(core_lib.LookupClass(
String::Handle(core_lib.PrivateName(Symbols::InvocationMirror()))));
ASSERT(!invocation_mirror_class.IsNull());
const String& function_name =
String::Handle(core_lib.PrivateName(Symbols::AllocateInvocationMirror()));
const Function& allocation_function = Function::Handle(
invocation_mirror_class.LookupStaticFunction(function_name));
ASSERT(!allocation_function.IsNull());
const int kNumAllocationArgs = 4;
const Array& allocation_args = Array::Handle(Array::New(kNumAllocationArgs));
allocation_args.SetAt(0, target_name);
allocation_args.SetAt(1, arguments_descriptor);
allocation_args.SetAt(2, arguments);
allocation_args.SetAt(3, Bool::False()); // Not a super invocation.
const Object& invocation_mirror =
Object::Handle(InvokeFunction(allocation_function, allocation_args));
if (invocation_mirror.IsError()) {
Exceptions::PropagateError(Error::Cast(invocation_mirror));
UNREACHABLE();
}
// Now use the invocation mirror object and invoke NoSuchMethod.
const int kTypeArgsLen = 0;
const int kNumArguments = 2;
ArgumentsDescriptor nsm_args_desc(
Array::Handle(ArgumentsDescriptor::New(kTypeArgsLen, kNumArguments)));
Function& function = Function::Handle(Resolver::ResolveDynamic(
receiver, Symbols::NoSuchMethod(), nsm_args_desc));
if (function.IsNull()) {
ASSERT(!FLAG_lazy_dispatchers);
// If noSuchMethod(invocation) is not found, call Object::noSuchMethod.
Thread* thread = Thread::Current();
function ^= Resolver::ResolveDynamicForReceiverClass(
Class::Handle(thread->zone(),
thread->isolate()->object_store()->object_class()),
Symbols::NoSuchMethod(), nsm_args_desc);
}
ASSERT(!function.IsNull());
const Array& args = Array::Handle(Array::New(kNumArguments));
args.SetAt(0, receiver);
args.SetAt(1, invocation_mirror);
return InvokeFunction(function, args);
}
ArgumentsDescriptor::ArgumentsDescriptor(const Array& array) : array_(array) {}
intptr_t ArgumentsDescriptor::TypeArgsLen() const {
return Smi::Value(Smi::RawCast(array_.At(kTypeArgsLenIndex)));
}
intptr_t ArgumentsDescriptor::Count() const {
return Smi::Value(Smi::RawCast(array_.At(kCountIndex)));
}
intptr_t ArgumentsDescriptor::PositionalCount() const {
return Smi::Value(Smi::RawCast(array_.At(kPositionalCountIndex)));
}
RawString* ArgumentsDescriptor::NameAt(intptr_t index) const {
const intptr_t offset =
kFirstNamedEntryIndex + (index * kNamedEntrySize) + kNameOffset;
String& result = String::Handle();
result ^= array_.At(offset);
return result.raw();
}
intptr_t ArgumentsDescriptor::PositionAt(intptr_t index) const {
const intptr_t offset =
kFirstNamedEntryIndex + (index * kNamedEntrySize) + kPositionOffset;
return Smi::Value(Smi::RawCast(array_.At(offset)));
}
bool ArgumentsDescriptor::MatchesNameAt(intptr_t index,
const String& other) const {
return NameAt(index) == other.raw();
}
RawArray* ArgumentsDescriptor::GetArgumentNames() const {
const intptr_t num_named_args = NamedCount();
if (num_named_args == 0) {
return Array::null();
}
Zone* zone = Thread::Current()->zone();
const Array& names =
Array::Handle(zone, Array::New(num_named_args, Heap::kOld));
String& name = String::Handle(zone);
const intptr_t num_pos_args = PositionalCount();
for (intptr_t i = 0; i < num_named_args; ++i) {
const intptr_t index = PositionAt(i) - num_pos_args;
name = NameAt(i);
ASSERT(names.At(index) == Object::null());
names.SetAt(index, name);
}
return names.raw();
}
intptr_t ArgumentsDescriptor::type_args_len_offset() {
return Array::element_offset(kTypeArgsLenIndex);
}
intptr_t ArgumentsDescriptor::count_offset() {
return Array::element_offset(kCountIndex);
}
intptr_t ArgumentsDescriptor::positional_count_offset() {
return Array::element_offset(kPositionalCountIndex);
}
intptr_t ArgumentsDescriptor::first_named_entry_offset() {
return Array::element_offset(kFirstNamedEntryIndex);
}
RawArray* ArgumentsDescriptor::New(intptr_t type_args_len,
intptr_t num_arguments,
const Array& optional_arguments_names) {
const intptr_t num_named_args =
optional_arguments_names.IsNull() ? 0 : optional_arguments_names.Length();
if (num_named_args == 0) {
return ArgumentsDescriptor::New(type_args_len, num_arguments);
}
ASSERT(type_args_len >= 0);
ASSERT(num_arguments >= 0);
const intptr_t num_pos_args = num_arguments - num_named_args;
// Build the arguments descriptor array, which consists of the the type
// argument vector length (0 if none); total argument count; the positional
// argument count; a sequence of (name, position) pairs, sorted by name, for
// each named optional argument; and a terminating null to simplify iterating
// in generated code.
Thread* thread = Thread::Current();
Zone* zone = thread->zone();
const intptr_t descriptor_len = LengthFor(num_named_args);
Array& descriptor =
Array::Handle(zone, Array::New(descriptor_len, Heap::kOld));
// Set length of type argument vector.
descriptor.SetAt(kTypeArgsLenIndex, Smi::Handle(Smi::New(type_args_len)));
// Set total number of passed arguments.
descriptor.SetAt(kCountIndex, Smi::Handle(Smi::New(num_arguments)));
// Set number of positional arguments.
descriptor.SetAt(kPositionalCountIndex, Smi::Handle(Smi::New(num_pos_args)));
// Set alphabetically sorted entries for named arguments.
String& name = String::Handle(zone);
Smi& pos = Smi::Handle(zone);
String& previous_name = String::Handle(zone);
Smi& previous_pos = Smi::Handle(zone);
for (intptr_t i = 0; i < num_named_args; i++) {
name ^= optional_arguments_names.At(i);
pos = Smi::New(num_pos_args + i);
intptr_t insert_index = kFirstNamedEntryIndex + (kNamedEntrySize * i);
// Shift already inserted pairs with "larger" names.
while (insert_index > kFirstNamedEntryIndex) {
intptr_t previous_index = insert_index - kNamedEntrySize;
previous_name ^= descriptor.At(previous_index + kNameOffset);
intptr_t result = name.CompareTo(previous_name);
ASSERT(result != 0); // Duplicate argument names checked in parser.
if (result > 0) break;
previous_pos ^= descriptor.At(previous_index + kPositionOffset);
descriptor.SetAt(insert_index + kNameOffset, previous_name);
descriptor.SetAt(insert_index + kPositionOffset, previous_pos);
insert_index = previous_index;
}
// Insert pair in descriptor array.
descriptor.SetAt(insert_index + kNameOffset, name);
descriptor.SetAt(insert_index + kPositionOffset, pos);
}
// Set terminating null.
descriptor.SetAt(descriptor_len - 1, Object::null_object());
// Share the immutable descriptor when possible by canonicalizing it.
descriptor.MakeImmutable();
const char* error_str = NULL;
descriptor ^= descriptor.CheckAndCanonicalize(thread, &error_str);
if (error_str != NULL) {
FATAL1("Failed to canonicalize: %s", error_str);
}
ASSERT(!descriptor.IsNull());
return descriptor.raw();
}
RawArray* ArgumentsDescriptor::New(intptr_t type_args_len,
intptr_t num_arguments) {
ASSERT(type_args_len >= 0);
ASSERT(num_arguments >= 0);
if ((type_args_len == 0) && (num_arguments < kCachedDescriptorCount)) {
return cached_args_descriptors_[num_arguments];
}
return NewNonCached(type_args_len, num_arguments, true);
}
RawArray* ArgumentsDescriptor::NewNonCached(intptr_t type_args_len,
intptr_t num_arguments,
bool canonicalize) {
// Build the arguments descriptor array, which consists of the length of the
// type argument vector, total argument count; the positional argument count;
// and a terminating null to simplify iterating in generated code.
Thread* thread = Thread::Current();
Zone* zone = thread->zone();
const intptr_t descriptor_len = LengthFor(0);
Array& descriptor =
Array::Handle(zone, Array::New(descriptor_len, Heap::kOld));
const Smi& arg_count = Smi::Handle(zone, Smi::New(num_arguments));
// Set type argument vector length.
descriptor.SetAt(kTypeArgsLenIndex,
Smi::Handle(zone, Smi::New(type_args_len)));
// Set total number of passed arguments.
descriptor.SetAt(kCountIndex, arg_count);
// Set number of positional arguments.
descriptor.SetAt(kPositionalCountIndex, arg_count);
// Set terminating null.
descriptor.SetAt((descriptor_len - 1), Object::null_object());
// Share the immutable descriptor when possible by canonicalizing it.
descriptor.MakeImmutable();
if (canonicalize) {
const char* error_str = NULL;
descriptor ^= descriptor.CheckAndCanonicalize(thread, &error_str);
if (error_str != NULL) {
FATAL1("Failed to canonicalize: %s", error_str);
}
}
ASSERT(!descriptor.IsNull());
return descriptor.raw();
}
void ArgumentsDescriptor::Init() {
for (int i = 0; i < kCachedDescriptorCount; i++) {
cached_args_descriptors_[i] = NewNonCached(/*type_args_len=*/0, i, false);
}
}
void ArgumentsDescriptor::Cleanup() {
for (int i = 0; i < kCachedDescriptorCount; i++) {
// Don't free pointers to RawArray objects managed by the VM.
cached_args_descriptors_[i] = NULL;
}
}
RawObject* DartLibraryCalls::InstanceCreate(const Library& lib,
const String& class_name,
const String& constructor_name,
const Array& arguments) {
const Class& cls = Class::Handle(lib.LookupClassAllowPrivate(class_name));
ASSERT(!cls.IsNull());
// For now, we only support a non-parameterized or raw type.
const int kNumExtraArgs = 1; // implicit rcvr arg.
const Instance& exception_object = Instance::Handle(Instance::New(cls));
const Array& constructor_arguments =
Array::Handle(Array::New(arguments.Length() + kNumExtraArgs));
constructor_arguments.SetAt(0, exception_object);
Object& obj = Object::Handle();
for (intptr_t i = 0; i < arguments.Length(); i++) {
obj = arguments.At(i);
constructor_arguments.SetAt((i + kNumExtraArgs), obj);
}
const String& function_name =
String::Handle(String::Concat(class_name, constructor_name));
const Function& constructor =
Function::Handle(cls.LookupConstructorAllowPrivate(function_name));
ASSERT(!constructor.IsNull());
const Object& retval = Object::Handle(
DartEntry::InvokeFunction(constructor, constructor_arguments));
ASSERT(retval.IsNull() || retval.IsError());
if (retval.IsError()) {
return retval.raw();
}
return exception_object.raw();
}
RawObject* DartLibraryCalls::ToString(const Instance& receiver) {
const int kTypeArgsLen = 0;
const int kNumArguments = 1; // Receiver.
ArgumentsDescriptor args_desc(
Array::Handle(ArgumentsDescriptor::New(kTypeArgsLen, kNumArguments)));
const Function& function = Function::Handle(
Resolver::ResolveDynamic(receiver, Symbols::toString(), args_desc));
ASSERT(!function.IsNull());
const Array& args = Array::Handle(Array::New(kNumArguments));
args.SetAt(0, receiver);
const Object& result =
Object::Handle(DartEntry::InvokeFunction(function, args));
ASSERT(result.IsInstance() || result.IsError());
return result.raw();
}
RawObject* DartLibraryCalls::HashCode(const Instance& receiver) {
const int kTypeArgsLen = 0;
const int kNumArguments = 1; // Receiver.
ArgumentsDescriptor args_desc(
Array::Handle(ArgumentsDescriptor::New(kTypeArgsLen, kNumArguments)));
const Function& function = Function::Handle(
Resolver::ResolveDynamic(receiver, Symbols::hashCode(), args_desc));
ASSERT(!function.IsNull());
const Array& args = Array::Handle(Array::New(kNumArguments));
args.SetAt(0, receiver);
const Object& result =
Object::Handle(DartEntry::InvokeFunction(function, args));
ASSERT(result.IsInstance() || result.IsError());
return result.raw();
}
RawObject* DartLibraryCalls::Equals(const Instance& left,
const Instance& right) {
const int kTypeArgsLen = 0;
const int kNumArguments = 2;
ArgumentsDescriptor args_desc(
Array::Handle(ArgumentsDescriptor::New(kTypeArgsLen, kNumArguments)));
const Function& function = Function::Handle(
Resolver::ResolveDynamic(left, Symbols::EqualOperator(), args_desc));
ASSERT(!function.IsNull());
const Array& args = Array::Handle(Array::New(kNumArguments));
args.SetAt(0, left);
args.SetAt(1, right);
const Object& result =
Object::Handle(DartEntry::InvokeFunction(function, args));
ASSERT(result.IsInstance() || result.IsError());
return result.raw();
}
// On success, returns a RawInstance. On failure, a RawError.
RawObject* DartLibraryCalls::IdentityHashCode(const Instance& object) {
const int kNumArguments = 1;
Thread* thread = Thread::Current();
Zone* zone = thread->zone();
const Library& libcore = Library::Handle(zone, Library::CoreLibrary());
ASSERT(!libcore.IsNull());
const Function& function = Function::Handle(
zone, libcore.LookupFunctionAllowPrivate(Symbols::identityHashCode()));
ASSERT(!function.IsNull());
const Array& args = Array::Handle(zone, Array::New(kNumArguments));
args.SetAt(0, object);
const Object& result =
Object::Handle(zone, DartEntry::InvokeFunction(function, args));
ASSERT(result.IsInstance() || result.IsError());
return result.raw();
}
RawObject* DartLibraryCalls::LookupHandler(Dart_Port port_id) {
Thread* thread = Thread::Current();
Zone* zone = thread->zone();
Function& function = Function::Handle(
zone, thread->isolate()->object_store()->lookup_port_handler());
const int kTypeArgsLen = 0;
const int kNumArguments = 1;
if (function.IsNull()) {
Library& isolate_lib = Library::Handle(zone, Library::IsolateLibrary());
ASSERT(!isolate_lib.IsNull());
const String& class_name = String::Handle(
zone, isolate_lib.PrivateName(Symbols::_RawReceivePortImpl()));
const String& function_name = String::Handle(
zone, isolate_lib.PrivateName(Symbols::_lookupHandler()));
function = Resolver::ResolveStatic(isolate_lib, class_name, function_name,
kTypeArgsLen, kNumArguments,
Object::empty_array());
ASSERT(!function.IsNull());
thread->isolate()->object_store()->set_lookup_port_handler(function);
}
const Array& args = Array::Handle(zone, Array::New(kNumArguments));
args.SetAt(0, Integer::Handle(zone, Integer::New(port_id)));
const Object& result =
Object::Handle(zone, DartEntry::InvokeFunction(function, args));
return result.raw();
}
RawObject* DartLibraryCalls::HandleMessage(const Object& handler,
const Instance& message) {
Thread* thread = Thread::Current();
Zone* zone = thread->zone();
Isolate* isolate = thread->isolate();
Function& function = Function::Handle(
zone, isolate->object_store()->handle_message_function());
const int kTypeArgsLen = 0;
const int kNumArguments = 2;
if (function.IsNull()) {
Library& isolate_lib = Library::Handle(zone, Library::IsolateLibrary());
ASSERT(!isolate_lib.IsNull());
const String& class_name = String::Handle(
zone, isolate_lib.PrivateName(Symbols::_RawReceivePortImpl()));
const String& function_name = String::Handle(
zone, isolate_lib.PrivateName(Symbols::_handleMessage()));
function = Resolver::ResolveStatic(isolate_lib, class_name, function_name,
kTypeArgsLen, kNumArguments,
Object::empty_array());
ASSERT(!function.IsNull());
isolate->object_store()->set_handle_message_function(function);
}
const Array& args = Array::Handle(zone, Array::New(kNumArguments));
args.SetAt(0, handler);
args.SetAt(1, message);
#if !defined(PRODUCT)
if (isolate->debugger()->IsStepping()) {
// If the isolate is being debugged and the debugger was stepping
// through code, enable single stepping so debugger will stop
// at the first location the user is interested in.
isolate->debugger()->SetResumeAction(Debugger::kStepInto);
}
#endif
const Object& result =
Object::Handle(zone, DartEntry::InvokeFunction(function, args));
ASSERT(result.IsNull() || result.IsError());
return result.raw();
}
RawObject* DartLibraryCalls::DrainMicrotaskQueue() {
Zone* zone = Thread::Current()->zone();
Library& isolate_lib = Library::Handle(zone, Library::IsolateLibrary());
ASSERT(!isolate_lib.IsNull());
Function& function =
Function::Handle(zone, isolate_lib.LookupFunctionAllowPrivate(
Symbols::_runPendingImmediateCallback()));
const Object& result = Object::Handle(
zone, DartEntry::InvokeFunction(function, Object::empty_array()));
ASSERT(result.IsNull() || result.IsError());
return result.raw();
}
RawObject* DartLibraryCalls::EnsureScheduleImmediate() {
Zone* zone = Thread::Current()->zone();
const Library& async_lib = Library::Handle(zone, Library::AsyncLibrary());
ASSERT(!async_lib.IsNull());
const Function& function =
Function::Handle(zone, async_lib.LookupFunctionAllowPrivate(
Symbols::_ensureScheduleImmediate()));
ASSERT(!function.IsNull());
const Object& result = Object::Handle(
zone, DartEntry::InvokeFunction(function, Object::empty_array()));
ASSERT(result.IsNull() || result.IsError());
return result.raw();
}
RawObject* DartLibraryCalls::MapSetAt(const Instance& map,
const Instance& key,
const Instance& value) {
const int kTypeArgsLen = 0;
const int kNumArguments = 3;
ArgumentsDescriptor args_desc(
Array::Handle(ArgumentsDescriptor::New(kTypeArgsLen, kNumArguments)));
const Function& function = Function::Handle(
Resolver::ResolveDynamic(map, Symbols::AssignIndexToken(), args_desc));
ASSERT(!function.IsNull());
const Array& args = Array::Handle(Array::New(kNumArguments));
args.SetAt(0, map);
args.SetAt(1, key);
args.SetAt(2, value);
const Object& result =
Object::Handle(DartEntry::InvokeFunction(function, args));
return result.raw();
}
} // namespace dart