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Issue 27215002: Very simple version of Isolates. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Address comments. Created 7 years, 1 month ago
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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2013, 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/isolate.h" 5 #include "vm/isolate.h"
6 6
7 #include "include/dart_api.h" 7 #include "include/dart_api.h"
8 #include "platform/assert.h" 8 #include "platform/assert.h"
9 #include "platform/json.h" 9 #include "platform/json.h"
10 #include "lib/mirrors.h" 10 #include "lib/mirrors.h"
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503 } 503 }
504 504
505 // Set up specific unhandled exception handler. 505 // Set up specific unhandled exception handler.
506 const String& callback_name = String::Handle( 506 const String& callback_name = String::Handle(
507 isolate, String::New(state->exception_callback_name())); 507 isolate, String::New(state->exception_callback_name()));
508 isolate->object_store()-> 508 isolate->object_store()->
509 set_unhandled_exception_handler(callback_name); 509 set_unhandled_exception_handler(callback_name);
510 510
511 Object& result = Object::Handle(); 511 Object& result = Object::Handle();
512 result = state->ResolveFunction(); 512 result = state->ResolveFunction();
513 bool is_spawn_uri = state->is_spawn_uri();
513 delete state; 514 delete state;
514 state = NULL; 515 state = NULL;
515 if (result.IsError()) { 516 if (result.IsError()) {
516 StoreError(isolate, result); 517 StoreError(isolate, result);
517 return false; 518 return false;
518 } 519 }
519 ASSERT(result.IsFunction()); 520 ASSERT(result.IsFunction());
520 Function& func = Function::Handle(isolate); 521 Function& func = Function::Handle(isolate);
521 func ^= result.raw(); 522 func ^= result.raw();
522 result = DartEntry::InvokeFunction(func, Object::empty_array()); 523 func = func.ImplicitClosureFunction();
524
525 // Instead of directly invoking the entry point we call '_startIsolate' with
526 // the entry point as argument. The '_startIsolate' function will
527 // communicate with the spawner to receive the initial message before it
528 // executes the real entry point.
529 // Since this function ("RunIsolate") is used for both Isolate.spawn and
530 // Isolate.spawnUri we also send a boolean flag as argument so that the
531 // "_startIsolate" function can act corresponding to how the isolate was
532 // created.
533 const Array& args = Array::Handle(Array::New(2));
534 args.SetAt(0, Instance::Handle(func.ImplicitStaticClosure()));
535 args.SetAt(1, is_spawn_uri ? Bool::True() : Bool::False());
536
537 const Library& lib = Library::Handle(Library::IsolateLibrary());
538 const String& entry_name = String::Handle(String::New("_startIsolate"));
539 const Function& entry_point =
540 Function::Handle(lib.LookupLocalFunction(entry_name));
541 ASSERT(entry_point.IsFunction() && !entry_point.IsNull());
542
543 result = DartEntry::InvokeFunction(entry_point, args);
523 if (result.IsError()) { 544 if (result.IsError()) {
524 StoreError(isolate, result); 545 StoreError(isolate, result);
525 return false; 546 return false;
526 } 547 }
527 } 548 }
528 return true; 549 return true;
529 } 550 }
530 551
531 552
532 static void ShutdownIsolate(uword parameter) { 553 static void ShutdownIsolate(uword parameter) {
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961 982
962 983
963 template<class T> 984 template<class T>
964 T* Isolate::AllocateReusableHandle() { 985 T* Isolate::AllocateReusableHandle() {
965 T* handle = reinterpret_cast<T*>(reusable_handles_.AllocateScopedHandle()); 986 T* handle = reinterpret_cast<T*>(reusable_handles_.AllocateScopedHandle());
966 T::initializeHandle(handle, T::null()); 987 T::initializeHandle(handle, T::null());
967 return handle; 988 return handle;
968 } 989 }
969 990
970 991
971 IsolateSpawnState::IsolateSpawnState(const Function& func, 992 IsolateSpawnState::IsolateSpawnState(const Function& func)
972 const Function& callback_func)
973 : isolate_(NULL), 993 : isolate_(NULL),
974 script_url_(NULL), 994 script_url_(NULL),
975 library_url_(NULL), 995 library_url_(NULL),
976 function_name_(NULL), 996 function_name_(NULL),
977 exception_callback_name_(NULL) { 997 exception_callback_name_(NULL) {
978 script_url_ = NULL; 998 script_url_ = NULL;
979 const Class& cls = Class::Handle(func.Owner()); 999 const Class& cls = Class::Handle(func.Owner());
980 ASSERT(cls.IsTopLevel()); 1000 ASSERT(cls.IsTopLevel());
981 const Library& lib = Library::Handle(cls.library()); 1001 const Library& lib = Library::Handle(cls.library());
982 const String& lib_url = String::Handle(lib.url()); 1002 const String& lib_url = String::Handle(lib.url());
983 library_url_ = strdup(lib_url.ToCString()); 1003 library_url_ = strdup(lib_url.ToCString());
984 1004
985 const String& func_name = String::Handle(func.name()); 1005 const String& func_name = String::Handle(func.name());
986 function_name_ = strdup(func_name.ToCString()); 1006 function_name_ = strdup(func_name.ToCString());
987 if (!callback_func.IsNull()) { 1007 exception_callback_name_ = strdup("_unhandledExceptionCallback");
988 const String& callback_name = String::Handle(callback_func.name());
989 exception_callback_name_ = strdup(callback_name.ToCString());
990 } else {
991 exception_callback_name_ = strdup("_unhandledExceptionCallback");
992 }
993 } 1008 }
994 1009
995 1010
996 IsolateSpawnState::IsolateSpawnState(const char* script_url) 1011 IsolateSpawnState::IsolateSpawnState(const char* script_url)
997 : isolate_(NULL), 1012 : isolate_(NULL),
998 library_url_(NULL), 1013 library_url_(NULL),
999 function_name_(NULL), 1014 function_name_(NULL),
1000 exception_callback_name_(NULL) { 1015 exception_callback_name_(NULL) {
1001 script_url_ = strdup(script_url); 1016 script_url_ = strdup(script_url);
1002 library_url_ = NULL; 1017 library_url_ = NULL;
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1042 return func.raw(); 1057 return func.raw();
1043 } 1058 }
1044 1059
1045 1060
1046 void IsolateSpawnState::Cleanup() { 1061 void IsolateSpawnState::Cleanup() {
1047 SwitchIsolateScope switch_scope(isolate()); 1062 SwitchIsolateScope switch_scope(isolate());
1048 Dart::ShutdownIsolate(); 1063 Dart::ShutdownIsolate();
1049 } 1064 }
1050 1065
1051 } // namespace dart 1066 } // namespace dart
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