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kernel_isolate.cc
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// Copyright (c) 2016, 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/kernel_isolate.h"
#include "include/dart_native_api.h"
#include "vm/compiler/jit/compiler.h"
#include "vm/dart_api_impl.h"
#include "vm/dart_entry.h"
#include "vm/flags.h"
#include "vm/isolate.h"
#include "vm/lockers.h"
#include "vm/message.h"
#include "vm/message_handler.h"
#include "vm/native_arguments.h"
#include "vm/native_entry.h"
#include "vm/native_message_handler.h"
#include "vm/object.h"
#include "vm/object_store.h"
#include "vm/port.h"
#include "vm/service.h"
#include "vm/symbols.h"
#include "vm/thread_pool.h"
#include "vm/timeline.h"
#if !defined(DART_PRECOMPILED_RUNTIME)
namespace dart {
#define Z (T->zone())
DEFINE_FLAG(bool, trace_kernel, false, "Trace Kernel service requests.");
DEFINE_FLAG(charp,
kernel_multiroot_filepaths,
nullptr,
"Comma-separated list of file paths that should be treated as roots"
" by frontend compiler.");
DEFINE_FLAG(charp,
kernel_multiroot_scheme,
nullptr,
"URI scheme that replaces filepaths prefixes specified"
" by kernel_multiroot_filepaths option");
const char* KernelIsolate::kName = DART_KERNEL_ISOLATE_NAME;
Dart_IsolateGroupCreateCallback KernelIsolate::create_group_callback_ = nullptr;
Monitor* KernelIsolate::monitor_ = new Monitor();
KernelIsolate::State KernelIsolate::state_ = KernelIsolate::kNotStarted;
Isolate* KernelIsolate::isolate_ = nullptr;
Dart_Port KernelIsolate::kernel_port_ = ILLEGAL_PORT;
class RunKernelTask : public ThreadPool::Task {
public:
virtual void Run() {
ASSERT(Isolate::Current() == nullptr);
#ifdef SUPPORT_TIMELINE
TimelineBeginEndScope tbes(Timeline::GetVMStream(), "KernelIsolateStartup");
#endif // SUPPORT_TIMELINE
char* error = nullptr;
Isolate* isolate = nullptr;
Dart_IsolateGroupCreateCallback create_group_callback =
KernelIsolate::create_group_callback();
ASSERT(create_group_callback != nullptr);
// Note: these flags must match those passed to the VM during
// the app-jit training run (see //utils/kernel-service/BUILD.gn).
Dart_IsolateFlags api_flags;
Isolate::FlagsInitialize(&api_flags);
api_flags.enable_asserts = false;
api_flags.null_safety = true;
api_flags.is_system_isolate = true;
api_flags.is_kernel_isolate = true;
#if !defined(DART_PRECOMPILER)
api_flags.use_field_guards = true;
#endif
#if !defined(DART_PRECOMPILER)
api_flags.use_osr = true;
#endif
isolate = reinterpret_cast<Isolate*>(
create_group_callback(KernelIsolate::kName, KernelIsolate::kName,
nullptr, nullptr, &api_flags, nullptr, &error));
if (isolate == nullptr) {
if (FLAG_trace_kernel) {
OS::PrintErr(DART_KERNEL_ISOLATE_NAME ": Isolate creation error: %s\n",
error);
}
free(error);
error = nullptr;
KernelIsolate::SetKernelIsolate(nullptr);
KernelIsolate::InitializingFailed();
return;
}
bool got_unwind;
{
ASSERT(Isolate::Current() == nullptr);
StartIsolateScope start_scope(isolate);
got_unwind = RunMain(isolate);
}
KernelIsolate::FinishedInitializing();
if (got_unwind) {
ShutdownIsolate(reinterpret_cast<uword>(isolate));
return;
}
// isolate_ was set as side effect of create callback.
ASSERT(isolate->is_kernel_isolate());
isolate->message_handler()->Run(isolate->group()->thread_pool(), nullptr,
ShutdownIsolate,
reinterpret_cast<uword>(isolate));
}
protected:
static void ShutdownIsolate(uword parameter) {
if (FLAG_trace_kernel) {
OS::PrintErr(DART_KERNEL_ISOLATE_NAME ": ShutdownIsolate\n");
}
KernelIsolate::SetLoadPort(ILLEGAL_PORT);
Dart_EnterIsolate(reinterpret_cast<Dart_Isolate>(parameter));
{
auto T = Thread::Current();
TransitionNativeToVM transition(T);
StackZone zone(T);
HandleScope handle_scope(T);
auto I = T->isolate();
ASSERT(I->is_kernel_isolate());
// Print the error if there is one. This may execute dart code to
// print the exception object, so we need to use a StartIsolateScope.
Error& error = Error::Handle(Z);
error = T->sticky_error();
if (!error.IsNull() && !error.IsUnwindError()) {
OS::PrintErr(DART_KERNEL_ISOLATE_NAME ": Error: %s\n",
error.ToErrorCString());
}
error = I->sticky_error();
if (!error.IsNull() && !error.IsUnwindError()) {
OS::PrintErr(DART_KERNEL_ISOLATE_NAME ": Error: %s\n",
error.ToErrorCString());
}
}
Dart_ShutdownIsolate();
if (FLAG_trace_kernel) {
OS::PrintErr(DART_KERNEL_ISOLATE_NAME ": Shutdown.\n");
}
KernelIsolate::FinishedExiting();
}
bool RunMain(Isolate* I) {
Thread* T = Thread::Current();
ASSERT(I == T->isolate());
StackZone zone(T);
// Invoke main which will return the port to which load requests are sent.
const Library& root_library =
Library::Handle(Z, I->group()->object_store()->root_library());
if (root_library.IsNull()) {
OS::PrintErr(DART_KERNEL_ISOLATE_NAME
": Embedder did not install a script.");
// Kernel isolate is not supported by embedder.
return false;
}
ASSERT(!root_library.IsNull());
const String& entry_name = Symbols::main();
const Function& entry = Function::Handle(
Z, root_library.LookupFunctionAllowPrivate(entry_name));
if (entry.IsNull()) {
// Kernel isolate is not supported by embedder.
OS::PrintErr(DART_KERNEL_ISOLATE_NAME
": Embedder did not provide a main function.");
return false;
}
ASSERT(!entry.IsNull());
const Object& result = Object::Handle(
Z, DartEntry::InvokeFunction(entry, Object::empty_array()));
ASSERT(!result.IsNull());
if (result.IsError()) {
// Kernel isolate did not initialize properly.
if (FLAG_trace_kernel) {
const Error& error = Error::Cast(result);
OS::PrintErr(DART_KERNEL_ISOLATE_NAME
": Calling main resulted in an error: %s",
error.ToErrorCString());
}
if (result.IsUnwindError()) {
return true;
}
return false;
}
ASSERT(result.IsReceivePort());
const ReceivePort& rp = ReceivePort::Cast(result);
KernelIsolate::SetLoadPort(rp.Id());
return false;
}
};
void KernelIsolate::InitializeState() {
// Grab the isolate create callback here to avoid race conditions with tests
// that change this after Dart_Initialize returns.
if (FLAG_trace_kernel) {
OS::PrintErr(DART_KERNEL_ISOLATE_NAME ": InitializeState\n");
}
create_group_callback_ = Isolate::CreateGroupCallback();
if (create_group_callback_ == nullptr) {
KernelIsolate::InitializingFailed();
return;
}
}
bool KernelIsolate::Start() {
if (create_group_callback_ == nullptr) {
if (FLAG_trace_kernel) {
OS::PrintErr(DART_KERNEL_ISOLATE_NAME
": Attempted to start kernel isolate without setting "
"Dart_InitializeParams property 'start_kernel_isolate' "
"to true\n");
}
return false;
}
bool start_task = false;
{
MonitorLocker ml(monitor_);
if (state_ == kNotStarted) {
if (FLAG_trace_kernel) {
OS::PrintErr(DART_KERNEL_ISOLATE_NAME ": Start\n");
}
start_task = true;
state_ = kStarting;
ml.NotifyAll();
}
}
bool task_started = true;
if (start_task) {
task_started = Dart::thread_pool()->Run<RunKernelTask>();
}
return task_started;
}
void KernelIsolate::Shutdown() {
MonitorLocker ml(monitor_);
while (state_ == kStarting) {
ml.Wait();
}
if (state_ == kStopped || state_ == kNotStarted) {
return;
}
ASSERT(state_ == kStarted);
state_ = kStopping;
ml.NotifyAll();
Isolate::KillIfExists(isolate_, Isolate::kInternalKillMsg);
while (state_ != kStopped) {
ml.Wait();
}
}
void KernelIsolate::InitCallback(Isolate* I) {
Thread* T = Thread::Current();
ASSERT(I == T->isolate());
ASSERT(I != nullptr);
if (!I->is_kernel_isolate()) {
// Not kernel isolate.
return;
}
ASSERT(!Exists());
if (FLAG_trace_kernel) {
OS::PrintErr(DART_KERNEL_ISOLATE_NAME ": InitCallback for %s.\n",
I->name());
}
SetKernelIsolate(I);
}
bool KernelIsolate::IsRunning() {
MonitorLocker ml(monitor_);
return (kernel_port_ != ILLEGAL_PORT) && (isolate_ != nullptr);
}
bool KernelIsolate::Exists() {
MonitorLocker ml(monitor_);
return isolate_ != nullptr;
}
void KernelIsolate::SetKernelIsolate(Isolate* isolate) {
MonitorLocker ml(monitor_);
ASSERT(isolate == nullptr || isolate->is_kernel_isolate());
isolate_ = isolate;
ml.NotifyAll();
}
void KernelIsolate::SetLoadPort(Dart_Port port) {
MonitorLocker ml(monitor_);
kernel_port_ = port;
ml.NotifyAll();
}
void KernelIsolate::FinishedExiting() {
MonitorLocker ml(monitor_);
ASSERT(state_ == kStarted || state_ == kStopping);
state_ = kStopped;
ml.NotifyAll();
}
void KernelIsolate::FinishedInitializing() {
MonitorLocker ml(monitor_);
ASSERT(state_ == kStarting);
state_ = kStarted;
ml.NotifyAll();
}
void KernelIsolate::InitializingFailed() {
MonitorLocker ml(monitor_);
ASSERT(state_ == kStarting);
state_ = kStopped;
ml.NotifyAll();
}
Dart_Port KernelIsolate::WaitForKernelPort() {
VMTagScope tagScope(Thread::Current(), VMTag::kLoadWaitTagId);
MonitorLocker ml(monitor_);
while (state_ == kStarting && (kernel_port_ == ILLEGAL_PORT)) {
ml.Wait();
}
return kernel_port_;
}
static Dart_CObject BuildFilesPairs(int source_files_count,
Dart_SourceFile source_files[]) {
Dart_CObject files;
files.type = Dart_CObject_kArray;
files.value.as_array.length = source_files_count * 2;
// typedef Dart_CObject* Dart_CObjectPtr;
Dart_CObject** fileNamePairs = new Dart_CObject*[source_files_count * 2];
for (int i = 0; i < source_files_count; i++) {
Dart_CObject* source_uri = new Dart_CObject();
source_uri->type = Dart_CObject_kString;
source_uri->value.as_string = const_cast<char*>(source_files[i].uri);
fileNamePairs[i * 2] = source_uri;
Dart_CObject* source_code = new Dart_CObject();
if (source_files[i].source != nullptr) {
source_code->type = Dart_CObject_kTypedData;
source_code->value.as_typed_data.type = Dart_TypedData_kUint8;
source_code->value.as_typed_data.length = strlen(source_files[i].source);
source_code->value.as_typed_data.values =
reinterpret_cast<const uint8_t*>(source_files[i].source);
} else {
source_code->type = Dart_CObject_kNull;
}
fileNamePairs[(i * 2) + 1] = source_code;
}
files.value.as_array.values = fileNamePairs;
return files;
}
static void ReleaseFilesPairs(const Dart_CObject& files) {
for (intptr_t i = 0; i < files.value.as_array.length; i++) {
delete files.value.as_array.values[i];
}
delete[] files.value.as_array.values;
}
static void PassThroughFinalizer(void* isolate_callback_data, void* peer) {}
MallocGrowableArray<char*>* KernelIsolate::experimental_flags_ =
new MallocGrowableArray<char*>();
void KernelIsolate::AddExperimentalFlag(const char* value) {
char* save_ptr; // Needed for strtok_r.
char* temp = Utils::StrDup(value);
char* token = strtok_r(temp, ",", &save_ptr);
while (token != nullptr) {
experimental_flags_->Add(Utils::StrDup(token));
token = strtok_r(nullptr, ",", &save_ptr);
}
free(temp);
}
bool KernelIsolate::GetExperimentalFlag(ExperimentalFeature feature) {
const char* value = GetExperimentalFeatureName(feature);
for (const char* str : *experimental_flags_) {
if (strcmp(str, value) == 0) {
return true;
} else if (strstr(str, "no-") == str && strcmp(str + 3, value) == 0) {
return false;
}
}
return GetExperimentalFeatureDefault(feature);
}
DEFINE_OPTION_HANDLER(KernelIsolate::AddExperimentalFlag,
enable_experiment,
"Comma separated list of experimental features.");
class KernelCompilationRequest : public ValueObject {
public:
KernelCompilationRequest()
: monitor_(),
port_(Dart_NewNativePort("kernel-compilation-port",
&HandleResponse,
false)),
next_(nullptr),
prev_(nullptr) {
RegisterRequest(this);
result_.status = Dart_KernelCompilationStatus_Unknown;
result_.error = nullptr;
result_.kernel = nullptr;
result_.kernel_size = 0;
}
~KernelCompilationRequest() {
UnregisterRequest(this);
if (port_ != ILLEGAL_PORT) {
Dart_CloseNativePort(port_);
}
}
intptr_t setDillData(Dart_CObject** dills_array,
intptr_t dill_num,
const uint8_t* buffer,
intptr_t buffer_size) {
if (buffer != nullptr) {
dills_array[dill_num] = new Dart_CObject;
dills_array[dill_num]->type = Dart_CObject_kExternalTypedData;
dills_array[dill_num]->value.as_external_typed_data.type =
Dart_TypedData_kUint8;
dills_array[dill_num]->value.as_external_typed_data.length = buffer_size;
dills_array[dill_num]->value.as_external_typed_data.data =
const_cast<uint8_t*>(buffer);
dills_array[dill_num]->value.as_external_typed_data.peer =
const_cast<uint8_t*>(buffer);
dills_array[dill_num]->value.as_external_typed_data.callback =
PassThroughFinalizer;
dill_num++;
}
return dill_num;
}
Dart_KernelCompilationResult SendAndWaitForResponse(
Dart_Port kernel_port,
const uint8_t* platform_kernel,
intptr_t platform_kernel_size,
const char* expression,
const Array& definitions,
const Array& definition_types,
const Array& type_definitions,
const Array& type_bounds,
const Array& type_defaults,
char const* library_uri,
char const* klass,
char const* method,
int64_t token_pos,
char const* script_uri,
bool is_static,
const MallocGrowableArray<char*>* experimental_flags) {
if (port_ == ILLEGAL_PORT) {
Dart_KernelCompilationResult result = {};
result.status = Dart_KernelCompilationStatus_MsgFailed;
result.error =
Utils::StrDup("Error Kernel Isolate : unable to create reply port");
return result;
}
Thread* thread = Thread::Current();
TransitionNativeToVM transition(thread);
Dart_CObject tag;
tag.type = Dart_CObject_kInt32;
tag.value.as_int32 = KernelIsolate::kCompileExpressionTag;
Dart_CObject send_port;
send_port.type = Dart_CObject_kSendPort;
send_port.value.as_send_port.id = port_;
send_port.value.as_send_port.origin_id = ILLEGAL_PORT;
Dart_CObject dart_platform_kernel;
if (platform_kernel != nullptr) {
dart_platform_kernel.type = Dart_CObject_kExternalTypedData;
dart_platform_kernel.value.as_external_typed_data.type =
Dart_TypedData_kUint8;
dart_platform_kernel.value.as_external_typed_data.length =
platform_kernel_size;
dart_platform_kernel.value.as_external_typed_data.data =
const_cast<uint8_t*>(platform_kernel);
dart_platform_kernel.value.as_external_typed_data.peer =
const_cast<uint8_t*>(platform_kernel);
dart_platform_kernel.value.as_external_typed_data.callback =
PassThroughFinalizer;
} else {
// If nullptr, the kernel service looks up the platform dill file
// next to the executable.
dart_platform_kernel.type = Dart_CObject_kNull;
}
Dart_CObject expression_object;
expression_object.type = Dart_CObject_kString;
expression_object.value.as_string = const_cast<char*>(expression);
Dart_CObject definitions_object;
intptr_t num_definitions = definitions.Length();
definitions_object.type = Dart_CObject_kArray;
definitions_object.value.as_array.length = num_definitions;
Dart_CObject** definitions_array = new Dart_CObject*[num_definitions];
for (intptr_t i = 0; i < num_definitions; ++i) {
definitions_array[i] = new Dart_CObject;
definitions_array[i]->type = Dart_CObject_kString;
definitions_array[i]->value.as_string = const_cast<char*>(
String::CheckedHandle(thread->zone(), definitions.At(i)).ToCString());
}
definitions_object.value.as_array.values = definitions_array;
Dart_CObject definition_types_object;
intptr_t num_definition_types = definition_types.Length();
definition_types_object.type = Dart_CObject_kArray;
definition_types_object.value.as_array.length = num_definition_types;
Dart_CObject** definition_types_array =
new Dart_CObject*[num_definition_types];
for (intptr_t i = 0; i < num_definition_types; ++i) {
definition_types_array[i] = new Dart_CObject;
definition_types_array[i]->type = Dart_CObject_kString;
definition_types_array[i]->value.as_string = const_cast<char*>(
String::CheckedHandle(thread->zone(), definition_types.At(i))
.ToCString());
}
definition_types_object.value.as_array.values = definition_types_array;
Dart_CObject type_definitions_object;
intptr_t num_type_definitions = type_definitions.Length();
type_definitions_object.type = Dart_CObject_kArray;
type_definitions_object.value.as_array.length = num_type_definitions;
Dart_CObject** type_definitions_array =
new Dart_CObject*[num_type_definitions];
for (intptr_t i = 0; i < num_type_definitions; ++i) {
type_definitions_array[i] = new Dart_CObject;
type_definitions_array[i]->type = Dart_CObject_kString;
type_definitions_array[i]->value.as_string = const_cast<char*>(
String::CheckedHandle(thread->zone(), type_definitions.At(i))
.ToCString());
}
type_definitions_object.value.as_array.values = type_definitions_array;
Dart_CObject type_bounds_object;
intptr_t num_type_bounds = type_bounds.Length();
type_bounds_object.type = Dart_CObject_kArray;
type_bounds_object.value.as_array.length = num_type_bounds;
Dart_CObject** type_bounds_array = new Dart_CObject*[num_type_bounds];
for (intptr_t i = 0; i < num_type_bounds; ++i) {
type_bounds_array[i] = new Dart_CObject;
type_bounds_array[i]->type = Dart_CObject_kString;
type_bounds_array[i]->value.as_string = const_cast<char*>(
String::CheckedHandle(thread->zone(), type_bounds.At(i)).ToCString());
}
type_bounds_object.value.as_array.values = type_bounds_array;
Dart_CObject type_defaults_object;
intptr_t num_type_defaults = type_defaults.Length();
type_defaults_object.type = Dart_CObject_kArray;
type_defaults_object.value.as_array.length = num_type_defaults;
Dart_CObject** type_defaults_array = new Dart_CObject*[num_type_defaults];
for (intptr_t i = 0; i < num_type_defaults; ++i) {
type_defaults_array[i] = new Dart_CObject;
type_defaults_array[i]->type = Dart_CObject_kString;
type_defaults_array[i]->value.as_string = const_cast<char*>(
String::CheckedHandle(thread->zone(), type_defaults.At(i))
.ToCString());
}
type_defaults_object.value.as_array.values = type_defaults_array;
Dart_CObject library_uri_object;
library_uri_object.type = Dart_CObject_kString;
library_uri_object.value.as_string = const_cast<char*>(library_uri);
Dart_CObject class_object;
if (klass != nullptr) {
class_object.type = Dart_CObject_kString;
class_object.value.as_string = const_cast<char*>(klass);
} else {
class_object.type = Dart_CObject_kNull;
}
Dart_CObject method_object;
if (method != nullptr) {
method_object.type = Dart_CObject_kString;
method_object.value.as_string = const_cast<char*>(method);
} else {
method_object.type = Dart_CObject_kNull;
}
Dart_CObject is_static_object;
is_static_object.type = Dart_CObject_kBool;
is_static_object.value.as_bool = is_static;
Dart_CObject token_pos_object;
token_pos_object.type = Dart_CObject_kInt64;
token_pos_object.value.as_int64 = token_pos;
Dart_CObject script_uri_object;
if (script_uri != nullptr) {
script_uri_object.type = Dart_CObject_kString;
script_uri_object.value.as_string = const_cast<char*>(script_uri);
} else {
script_uri_object.type = Dart_CObject_kNull;
}
auto isolate_group = thread->isolate_group();
auto source = isolate_group->source();
Dart_CObject isolate_id;
isolate_id.type = Dart_CObject_kInt64;
isolate_id.value.as_int64 = static_cast<int64_t>(isolate_group->id());
intptr_t num_dills = 0;
if (source->kernel_buffer != nullptr) {
num_dills++;
}
if (source->script_kernel_buffer != nullptr) {
num_dills++;
}
Array& loaded_blobs = Array::Handle();
if (source->loaded_blobs_ != nullptr) {
loaded_blobs = source->loaded_blobs_;
WeakProperty& weak_property = WeakProperty::Handle();
for (intptr_t i = 0; i < loaded_blobs.Length(); i++) {
weak_property ^= loaded_blobs.At(i);
if (weak_property.key() != ExternalTypedData::null()) {
num_dills++;
}
}
}
Dart_CObject dills_object;
dills_object.type = Dart_CObject_kArray;
dills_object.value.as_array.length = num_dills;
Dart_CObject** dills_array = new Dart_CObject*[num_dills];
intptr_t dill_num = 0;
dill_num = setDillData(dills_array, dill_num, source->kernel_buffer,
source->kernel_buffer_size);
dill_num = setDillData(dills_array, dill_num, source->script_kernel_buffer,
source->script_kernel_size);
if (!loaded_blobs.IsNull()) {
WeakProperty& weak_property = WeakProperty::Handle();
for (intptr_t i = 0; i < loaded_blobs.Length(); i++) {
weak_property ^= loaded_blobs.At(i);
if (weak_property.key() != ExternalTypedData::null()) {
ExternalTypedData& externalTypedData = ExternalTypedData::Handle(
thread->zone(), ExternalTypedData::RawCast(weak_property.key()));
NoSafepointScope no_safepoint(thread);
const uint8_t* data = const_cast<uint8_t*>(
reinterpret_cast<uint8_t*>(externalTypedData.DataAddr(0)));
dill_num = setDillData(dills_array, dill_num, data,
externalTypedData.Length());
}
}
}
dills_object.value.as_array.values = dills_array;
Dart_CObject num_blob_loads;
num_blob_loads.type = Dart_CObject_kInt64;
num_blob_loads.value.as_int64 = source->num_blob_loads_;
Dart_CObject enable_asserts;
enable_asserts.type = Dart_CObject_kBool;
enable_asserts.value.as_bool = isolate_group->asserts();
intptr_t num_experimental_flags = experimental_flags->length();
Dart_CObject** experimental_flags_array =
new Dart_CObject*[num_experimental_flags];
for (intptr_t i = 0; i < num_experimental_flags; ++i) {
experimental_flags_array[i] = new Dart_CObject;
experimental_flags_array[i]->type = Dart_CObject_kString;
experimental_flags_array[i]->value.as_string = (*experimental_flags)[i];
}
Dart_CObject experimental_flags_object;
experimental_flags_object.type = Dart_CObject_kArray;
experimental_flags_object.value.as_array.values = experimental_flags_array;
experimental_flags_object.value.as_array.length = num_experimental_flags;
Dart_CObject enable_mirrors;
enable_mirrors.type = Dart_CObject_kBool;
enable_mirrors.value.as_bool = FLAG_enable_mirrors;
Dart_CObject message;
message.type = Dart_CObject_kArray;
Dart_CObject* message_arr[] = {&tag,
&send_port,
&isolate_id,
&dart_platform_kernel,
&expression_object,
&definitions_object,
&definition_types_object,
&type_definitions_object,
&type_bounds_object,
&type_defaults_object,
&library_uri_object,
&class_object,
&method_object,
&is_static_object,
&token_pos_object,
&script_uri_object,
&dills_object,
&num_blob_loads,
&enable_asserts,
&experimental_flags_object,
&enable_mirrors};
message.value.as_array.values = message_arr;
message.value.as_array.length = ARRAY_SIZE(message_arr);
{
TransitionVMToNative transition(thread);
// Send the message.
Dart_PostCObject(kernel_port, &message);
// Wait for reply to arrive.
VMTagScope tagScope(thread, VMTag::kLoadWaitTagId);
MonitorLocker ml(&monitor_);
while (result_.status == Dart_KernelCompilationStatus_Unknown) {
ml.Wait();
}
}
for (intptr_t i = 0; i < num_definitions; ++i) {
delete definitions_array[i];
}
delete[] definitions_array;
for (intptr_t i = 0; i < num_definition_types; ++i) {
delete definition_types_array[i];
}
delete[] definition_types_array;
for (intptr_t i = 0; i < num_type_definitions; ++i) {
delete type_definitions_array[i];
}
delete[] type_definitions_array;
for (intptr_t i = 0; i < num_type_bounds; ++i) {
delete type_bounds_array[i];
}
delete[] type_bounds_array;
for (intptr_t i = 0; i < num_type_defaults; ++i) {
delete type_defaults_array[i];
}
delete[] type_defaults_array;
for (intptr_t i = 0; i < num_dills; ++i) {
delete dills_array[i];
}
delete[] dills_array;
for (intptr_t i = 0; i < num_experimental_flags; ++i) {
delete experimental_flags_array[i];
}
delete[] experimental_flags_array;
return result_;
}
Dart_KernelCompilationResult SendAndWaitForResponse(
int request_tag,
Dart_Port kernel_port,
const char* script_uri,
const uint8_t* platform_kernel,
intptr_t platform_kernel_size,
int source_files_count,
Dart_SourceFile source_files[],
bool incremental_compile,
bool for_snapshot,
bool embed_sources,
const char* package_config,
const char* multiroot_filepaths,
const char* multiroot_scheme,
const MallocGrowableArray<char*>* experimental_flags,
Dart_KernelCompilationVerbosityLevel verbosity) {
// Build the message for the Kernel isolate.
// tag is used to specify which operation the frontend should perform.
if (port_ == ILLEGAL_PORT) {
Dart_KernelCompilationResult result = {};
result.status = Dart_KernelCompilationStatus_MsgFailed;
result.error =
Utils::StrDup("Error Kernel Isolate : unable to create reply port");
return result;
}
Dart_CObject tag;
tag.type = Dart_CObject_kInt32;
tag.value.as_int32 = request_tag;
Dart_CObject send_port;
send_port.type = Dart_CObject_kSendPort;
send_port.value.as_send_port.id = port_;
send_port.value.as_send_port.origin_id = ILLEGAL_PORT;
Dart_CObject uri;
if (script_uri != nullptr) {
uri.type = Dart_CObject_kString;
uri.value.as_string = const_cast<char*>(script_uri);
} else {
uri.type = Dart_CObject_kNull;
}
Dart_CObject dart_platform_kernel;
if (platform_kernel != nullptr) {
dart_platform_kernel.type = Dart_CObject_kExternalTypedData;
dart_platform_kernel.value.as_external_typed_data.type =
Dart_TypedData_kUint8;
dart_platform_kernel.value.as_external_typed_data.length =
platform_kernel_size;
dart_platform_kernel.value.as_external_typed_data.data =
const_cast<uint8_t*>(platform_kernel);
dart_platform_kernel.value.as_external_typed_data.peer =
const_cast<uint8_t*>(platform_kernel);
dart_platform_kernel.value.as_external_typed_data.callback =
PassThroughFinalizer;
} else {
// If nullptr, the kernel service looks up the platform dill file
// next to the executable.
dart_platform_kernel.type = Dart_CObject_kNull;
}
Dart_CObject dart_incremental;
dart_incremental.type = Dart_CObject_kBool;
dart_incremental.value.as_bool = incremental_compile;
Dart_CObject dart_snapshot;
dart_snapshot.type = Dart_CObject_kBool;
dart_snapshot.value.as_bool = for_snapshot;
Dart_CObject dart_embed_sources;
dart_embed_sources.type = Dart_CObject_kBool;
dart_embed_sources.value.as_bool = embed_sources;
auto thread = Thread::Current();
auto isolate_group = thread != nullptr ? thread->isolate_group() : nullptr;
ASSERT((thread == nullptr) || (isolate_group != nullptr));
Dart_CObject isolate_id;
isolate_id.type = Dart_CObject_kInt64;
isolate_id.value.as_int64 = isolate_group != nullptr
? static_cast<int64_t>(isolate_group->id())
: 0;
Dart_CObject message;
message.type = Dart_CObject_kArray;
Dart_CObject files = BuildFilesPairs(source_files_count, source_files);
Dart_CObject enable_asserts;
enable_asserts.type = Dart_CObject_kBool;
enable_asserts.value.as_bool = isolate_group != nullptr
? isolate_group->asserts()
: FLAG_enable_asserts;
intptr_t num_experimental_flags = experimental_flags->length();
Dart_CObject** experimental_flags_array =
new Dart_CObject*[num_experimental_flags];
for (intptr_t i = 0; i < num_experimental_flags; ++i) {
experimental_flags_array[i] = new Dart_CObject;
experimental_flags_array[i]->type = Dart_CObject_kString;
experimental_flags_array[i]->value.as_string = (*experimental_flags)[i];
}
Dart_CObject experimental_flags_object;
experimental_flags_object.type = Dart_CObject_kArray;
experimental_flags_object.value.as_array.values = experimental_flags_array;
experimental_flags_object.value.as_array.length = num_experimental_flags;
Dart_CObject package_config_uri;
if (package_config != nullptr) {
package_config_uri.type = Dart_CObject_kString;
package_config_uri.value.as_string = const_cast<char*>(package_config);
} else {
package_config_uri.type = Dart_CObject_kNull;
}
Dart_CObject multiroot_filepaths_object;
{
const char* filepaths = multiroot_filepaths != nullptr
? multiroot_filepaths
: FLAG_kernel_multiroot_filepaths;
if (filepaths != nullptr) {
multiroot_filepaths_object.type = Dart_CObject_kString;
multiroot_filepaths_object.value.as_string =
const_cast<char*>(filepaths);
} else {
multiroot_filepaths_object.type = Dart_CObject_kNull;
}
}
Dart_CObject multiroot_scheme_object;
{
const char* scheme = multiroot_scheme != nullptr
? multiroot_scheme
: FLAG_kernel_multiroot_scheme;
if (scheme != nullptr) {
multiroot_scheme_object.type = Dart_CObject_kString;
multiroot_scheme_object.value.as_string = const_cast<char*>(scheme);
} else {
multiroot_scheme_object.type = Dart_CObject_kNull;
}
}
Dart_CObject verbosity_str;
verbosity_str.type = Dart_CObject_kString;
verbosity_str.value.as_string =
const_cast<char*>(KernelCompilationVerbosityLevelToString(verbosity));
Dart_CObject enable_mirrors;
enable_mirrors.type = Dart_CObject_kBool;
enable_mirrors.value.as_bool = FLAG_enable_mirrors;
Dart_CObject* message_arr[] = {&tag,
&send_port,
&uri,
&dart_platform_kernel,
&dart_incremental,
&dart_snapshot,
&dart_embed_sources,
&isolate_id,
&files,
&enable_asserts,
&experimental_flags_object,
&package_config_uri,
&multiroot_filepaths_object,
&multiroot_scheme_object,
&verbosity_str,
&enable_mirrors};
message.value.as_array.values = message_arr;
message.value.as_array.length = ARRAY_SIZE(message_arr);
// Send the message.
Dart_PostCObject(kernel_port, &message);
ReleaseFilesPairs(files);
// Wait for reply to arrive.
VMTagScope tagScope(Thread::Current(), VMTag::kLoadWaitTagId);
MonitorLocker ml(&monitor_);
while (result_.status == Dart_KernelCompilationStatus_Unknown) {
ml.Wait();
}
for (intptr_t i = 0; i < num_experimental_flags; ++i) {
delete experimental_flags_array[i];
}
delete[] experimental_flags_array;
return result_;
}
private:
void LoadKernelFromResponse(Dart_CObject* response) {
ASSERT((response->type == Dart_CObject_kTypedData) ||
(response->type == Dart_CObject_kNull));
if (response->type == Dart_CObject_kNull) {
return;
}
ASSERT(response->value.as_typed_data.type == Dart_TypedData_kUint8);
result_.kernel_size = response->value.as_typed_data.length;
result_.kernel = static_cast<uint8_t*>(malloc(result_.kernel_size));
memmove(result_.kernel, response->value.as_typed_data.values,
result_.kernel_size);
}
// Possible responses from the Kernel isolate:
//
// [Ok, Uint8List KernelBinary]
// [Error, String error, Uint8List KernelBinary]
// [Crash, String error]
//
void HandleResponseImpl(Dart_CObject* message) {
ASSERT(message->type == Dart_CObject_kArray);
ASSERT(message->value.as_array.length >= 1);
Dart_CObject** response = message->value.as_array.values;
MonitorLocker ml(&monitor_);
ASSERT(response[0]->type == Dart_CObject_kInt32);
result_.status = static_cast<Dart_KernelCompilationStatus>(
message->value.as_array.values[0]->value.as_int32);
if (result_.status == Dart_KernelCompilationStatus_Ok) {
LoadKernelFromResponse(response[1]);
} else {
if (result_.status == Dart_KernelCompilationStatus_Error) {
LoadKernelFromResponse(response[2]);
}
// This is an error.
ASSERT(response[1]->type == Dart_CObject_kString);
result_.error = Utils::StrDup(response[1]->value.as_string);
}
ml.Notify();
}