| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "sky/engine/bindings/builtin_natives.h" |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #include "base/bind.h" |
| #include "base/logging.h" |
| #include "base/macros.h" |
| #include "base/time/time.h" |
| #include "dart/runtime/include/dart_api.h" |
| #include "sky/engine/bindings/builtin.h" |
| #include "sky/engine/core/dom/Microtask.h" |
| #include "sky/engine/core/script/dom_dart_state.h" |
| #include "sky/engine/tonic/dart_api_scope.h" |
| #include "sky/engine/tonic/dart_builtin.h" |
| #include "sky/engine/tonic/dart_error.h" |
| #include "sky/engine/tonic/dart_invoke.h" |
| #include "sky/engine/tonic/dart_isolate_scope.h" |
| #include "sky/engine/tonic/dart_state.h" |
| #include "sky/engine/tonic/dart_timer_heap.h" |
| #include "sky/engine/tonic/dart_value.h" |
| #include "sky/engine/wtf/text/WTFString.h" |
| |
| #if defined(OS_ANDROID) |
| #include <android/log.h> |
| #endif |
| |
| #if __APPLE__ |
| extern "C" { |
| // Cannot import the syslog.h header directly because of macro collision |
| extern void syslog(int, const char *, ...); |
| } |
| #endif |
| |
| namespace blink { |
| |
| #define REGISTER_FUNCTION(name, count) \ |
| { "" #name, name, count }, |
| #define DECLARE_FUNCTION(name, count) \ |
| extern void name(Dart_NativeArguments args); |
| |
| // Lists the native functions implementing basic functionality in |
| // the Mojo embedder dart, such as printing, and file I/O. |
| #define BUILTIN_NATIVE_LIST(V) \ |
| V(Logger_PrintString, 1) \ |
| V(ScheduleMicrotask, 1) \ |
| V(GetBaseURLString, 0) \ |
| V(Timer_create, 3) \ |
| V(Timer_cancel, 1) |
| |
| BUILTIN_NATIVE_LIST(DECLARE_FUNCTION); |
| |
| static struct NativeEntries { |
| const char* name; |
| Dart_NativeFunction function; |
| int argument_count; |
| } BuiltinEntries[] = {BUILTIN_NATIVE_LIST(REGISTER_FUNCTION)}; |
| |
| Dart_NativeFunction BuiltinNatives::NativeLookup(Dart_Handle name, |
| int argument_count, |
| bool* auto_setup_scope) { |
| const char* function_name = nullptr; |
| Dart_Handle result = Dart_StringToCString(name, &function_name); |
| DART_CHECK_VALID(result); |
| DCHECK(function_name != nullptr); |
| DCHECK(auto_setup_scope != nullptr); |
| *auto_setup_scope = true; |
| size_t num_entries = arraysize(BuiltinEntries); |
| for (size_t i = 0; i < num_entries; i++) { |
| const struct NativeEntries& entry = BuiltinEntries[i]; |
| if (!strcmp(function_name, entry.name) && |
| (entry.argument_count == argument_count)) { |
| return entry.function; |
| } |
| } |
| return nullptr; |
| } |
| |
| const uint8_t* BuiltinNatives::NativeSymbol(Dart_NativeFunction native_function) { |
| size_t num_entries = arraysize(BuiltinEntries); |
| for (size_t i = 0; i < num_entries; i++) { |
| const struct NativeEntries& entry = BuiltinEntries[i]; |
| if (entry.function == native_function) { |
| return reinterpret_cast<const uint8_t*>(entry.name); |
| } |
| } |
| return nullptr; |
| } |
| |
| static Dart_Handle GetClosure(Dart_Handle builtin_library, const char* name) { |
| Dart_Handle getter_name = ToDart(name); |
| Dart_Handle closure = Dart_Invoke(builtin_library, getter_name, 0, nullptr); |
| DART_CHECK_VALID(closure); |
| return closure; |
| } |
| |
| static void InitDartInternal(Dart_Handle builtin_library, |
| BuiltinNatives::IsolateType isolate_type) { |
| Dart_Handle print = GetClosure(builtin_library, "_getPrintClosure"); |
| Dart_Handle timer = GetClosure(builtin_library, "_getCreateTimerClosure"); |
| |
| Dart_Handle internal_library = DartBuiltin::LookupLibrary("dart:_internal"); |
| |
| DART_CHECK_VALID(Dart_SetField( |
| internal_library, ToDart("_printClosure"), print)); |
| |
| if (isolate_type == BuiltinNatives::MainIsolate) { |
| Dart_Handle vm_hooks_name = ToDart("VMLibraryHooks"); |
| Dart_Handle vm_hooks = Dart_GetClass(internal_library, vm_hooks_name); |
| DART_CHECK_VALID(vm_hooks); |
| Dart_Handle timer_name = ToDart("timerFactory"); |
| DART_CHECK_VALID(Dart_SetField(vm_hooks, timer_name, timer)); |
| } else { |
| CHECK(isolate_type == BuiltinNatives::DartIOIsolate); |
| Dart_Handle io_lib = DartBuiltin::LookupLibrary("dart:io"); |
| Dart_Handle setup_hooks = Dart_NewStringFromCString("_setupHooks"); |
| DART_CHECK_VALID(Dart_Invoke(io_lib, setup_hooks, 0, NULL)); |
| Dart_Handle isolate_lib = DartBuiltin::LookupLibrary("dart:isolate"); |
| DART_CHECK_VALID(Dart_Invoke(isolate_lib, setup_hooks, 0, NULL)); |
| } |
| } |
| |
| static void InitDartCore(Dart_Handle builtin, |
| BuiltinNatives::IsolateType isolate_type) { |
| Dart_Handle get_base_url = GetClosure(builtin, "_getGetBaseURLClosure"); |
| Dart_Handle core_library = DartBuiltin::LookupLibrary("dart:core"); |
| DART_CHECK_VALID(Dart_SetField(core_library, |
| ToDart("_uriBaseClosure"), get_base_url)); |
| } |
| |
| static void InitDartAsync(Dart_Handle builtin_library, |
| BuiltinNatives::IsolateType isolate_type) { |
| Dart_Handle schedule_microtask; |
| if (isolate_type == BuiltinNatives::MainIsolate) { |
| schedule_microtask = |
| GetClosure(builtin_library, "_getScheduleMicrotaskClosure"); |
| } else { |
| CHECK(isolate_type == BuiltinNatives::DartIOIsolate); |
| Dart_Handle isolate_lib = DartBuiltin::LookupLibrary("dart:isolate"); |
| Dart_Handle method_name = |
| Dart_NewStringFromCString("_getIsolateScheduleImmediateClosure"); |
| schedule_microtask = Dart_Invoke(isolate_lib, method_name, 0, NULL); |
| } |
| Dart_Handle async_library = DartBuiltin::LookupLibrary("dart:async"); |
| Dart_Handle set_schedule_microtask = ToDart("_setScheduleImmediateClosure"); |
| DART_CHECK_VALID(Dart_Invoke(async_library, set_schedule_microtask, 1, |
| &schedule_microtask)); |
| } |
| |
| void BuiltinNatives::Init(IsolateType isolate_type) { |
| Dart_Handle builtin = Builtin::LoadAndCheckLibrary(Builtin::kBuiltinLibrary); |
| DART_CHECK_VALID(builtin); |
| InitDartInternal(builtin, isolate_type); |
| InitDartCore(builtin, isolate_type); |
| InitDartAsync(builtin, isolate_type); |
| } |
| |
| // Implementation of native functions which are used for some |
| // test/debug functionality in standalone dart mode. |
| void Logger_PrintString(Dart_NativeArguments args) { |
| intptr_t length = 0; |
| uint8_t* chars = nullptr; |
| Dart_Handle str = Dart_GetNativeArgument(args, 0); |
| Dart_Handle result = Dart_StringToUTF8(str, &chars, &length); |
| if (Dart_IsError(result)) { |
| Dart_PropagateError(result); |
| } else { |
| // Uses fwrite to support printing NUL bytes. |
| fwrite(chars, 1, length, stdout); |
| fputs("\n", stdout); |
| #if defined(OS_ANDROID) |
| // In addition to writing to the stdout, write to the logcat so that the |
| // message is discoverable when running on an unrooted device. |
| __android_log_print(ANDROID_LOG_INFO, "sky", "%.*s", length, chars); |
| #elif __APPLE__ |
| syslog(1 /* LOG_ALERT */, "%.*s", (int)length, chars); |
| #endif |
| } |
| } |
| |
| static void ExecuteMicrotask(base::WeakPtr<DartState> dart_state, |
| RefPtr<DartValue> callback) { |
| if (!dart_state) |
| return; |
| DartIsolateScope scope(dart_state->isolate()); |
| DartApiScope api_scope; |
| DartInvokeAppClosure(callback->dart_value(), 0, nullptr); |
| } |
| |
| void ScheduleMicrotask(Dart_NativeArguments args) { |
| Dart_Handle closure = Dart_GetNativeArgument(args, 0); |
| if (LogIfError(closure) || !Dart_IsClosure(closure)) |
| return; |
| DartState* dart_state = DartState::Current(); |
| CHECK(dart_state); |
| Microtask::enqueueMicrotask(base::Bind(&ExecuteMicrotask, |
| dart_state->GetWeakPtr(), DartValue::Create(dart_state, closure))); |
| } |
| |
| void GetBaseURLString(Dart_NativeArguments args) { |
| String url = DOMDartState::Current()->url(); |
| Dart_SetReturnValue(args, StringToDart(DartState::Current(), url)); |
| } |
| |
| void Timer_create(Dart_NativeArguments args) { |
| int64_t milliseconds = 0; |
| DART_CHECK_VALID(Dart_GetNativeIntegerArgument(args, 0, &milliseconds)); |
| Dart_Handle closure = Dart_GetNativeArgument(args, 1); |
| DART_CHECK_VALID(closure); |
| CHECK(Dart_IsClosure(closure)); |
| bool repeating = false; |
| DART_CHECK_VALID(Dart_GetNativeBooleanArgument(args, 2, &repeating)); |
| |
| DartState* state = DartState::Current(); |
| CHECK(state); |
| |
| std::unique_ptr<DartTimerHeap::Task> task = |
| std::unique_ptr<DartTimerHeap::Task>(new DartTimerHeap::Task); |
| task->closure.Set(state, closure); |
| task->delay = base::TimeDelta::FromMilliseconds(milliseconds); |
| task->repeating = repeating; |
| |
| int timer_id = state->timer_heap().Add(std::move(task)); |
| Dart_SetIntegerReturnValue(args, timer_id); |
| } |
| |
| void Timer_cancel(Dart_NativeArguments args) { |
| int64_t timer_id = 0; |
| DART_CHECK_VALID(Dart_GetNativeIntegerArgument(args, 0, &timer_id)); |
| |
| DartState* state = DartState::Current(); |
| CHECK(state); |
| state->timer_heap().Remove(timer_id); |
| } |
| |
| } // namespace blink |