Track async causal stack traces

runtime/vm/object_store.cc

 // Copyright (c) 2013, 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/object_store.h"
 
 #include "vm/exceptions.h"
 #include "vm/dart_entry.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
 #include "vm/raw_object.h"
+#include "vm/resolver.h"
 #include "vm/symbols.h"
 #include "vm/visitor.h"
 
 namespace dart {
 
 ObjectStore::ObjectStore()
     : object_class_(Class::null()),
       object_type_(Type::null()),
       null_class_(Class::null()),
       null_type_(Type::null()),
@@ skipping 64 matching lines @@
       stack_overflow_(Instance::null()),
       out_of_memory_(Instance::null()),
       preallocated_unhandled_exception_(UnhandledException::null()),
       preallocated_stack_trace_(StackTrace::null()),
       lookup_port_handler_(Function::null()),
       empty_uint32_array_(TypedData::null()),
       handle_message_function_(Function::null()),
       simple_instance_of_function_(Function::null()),
       simple_instance_of_true_function_(Function::null()),
       simple_instance_of_false_function_(Function::null()),
+      async_clear_thread_stack_trace_(Function::null()),
+      async_set_thread_stack_trace_(Function::null()),
       library_load_error_table_(Array::null()),
       unique_dynamic_targets_(Array::null()),
       token_objects_(GrowableObjectArray::null()),
       token_objects_map_(Array::null()),
       megamorphic_cache_table_(GrowableObjectArray::null()),
       megamorphic_miss_code_(Code::null()),
       megamorphic_miss_function_(Function::null()) {
   for (RawObject** current = from(); current <= to(); current++) {
     ASSERT(*current == Object::null());
   }
@@ skipping 124 matching lines @@
   cls = async_lib.LookupClass(Symbols::Future());
   ASSERT(!cls.IsNull());
   set_future_class(cls);
   cls = async_lib.LookupClass(Symbols::Completer());
   ASSERT(!cls.IsNull());
   set_completer_class(cls);
   cls = async_lib.LookupClass(Symbols::StreamIterator());
   ASSERT(!cls.IsNull());
   set_stream_iterator_class(cls);
 
+  String& function_name = String::Handle(zone);
+  Function& function = Function::Handle(zone);
+  function_name ^= async_lib.PrivateName(Symbols::SetAsyncThreadStackTrace());
+  ASSERT(!function_name.IsNull());
+  function ^= Resolver::ResolveStatic(async_lib, Object::null_string(),
+                                      function_name, 1, Object::null_array());
+  set_async_set_thread_stack_trace(function);
+
+  function_name ^= async_lib.PrivateName(Symbols::ClearAsyncThreadStackTrace());
+  ASSERT(!function_name.IsNull());
+  function ^= Resolver::ResolveStatic(async_lib, Object::null_string(),
+                                      function_name, 0, Object::null_array());
+  ASSERT(!function.IsNull());
+  set_async_clear_thread_stack_trace(function);
+
   const Library& internal_lib = Library::Handle(_internal_library());
   cls = internal_lib.LookupClass(Symbols::Symbol());
   set_symbol_class(cls);
 
   const Library& core_lib = Library::Handle(core_library());
   cls = core_lib.LookupClassAllowPrivate(Symbols::_CompileTimeError());
   ASSERT(!cls.IsNull());
   set_compiletime_error_class(cls);
 
   // Cache the core private functions used for fast instance of checks.
   simple_instance_of_function_ =
       PrivateObjectLookup(Symbols::_simpleInstanceOf());
   simple_instance_of_true_function_ =
       PrivateObjectLookup(Symbols::_simpleInstanceOfTrue());
   simple_instance_of_false_function_ =
       PrivateObjectLookup(Symbols::_simpleInstanceOfFalse());
 #endif
 }
 
 }  // namespace dart