Add API support for passing a C++ function as a microtask callback

test/cctest/test-api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 20723 matching lines @@
   CompileRun("ext1Calls++;");
 }
 
 
 static void MicrotaskTwo(const v8::FunctionCallbackInfo<Value>& info) {
   v8::HandleScope scope(info.GetIsolate());
   CompileRun("ext2Calls++;");
 }
 
 
+void* g_passed_to_three = NULL;
+
+
+static void MicrotaskThree(void* data) {
+  g_passed_to_three = data;
+}
+
+
 TEST(EnqueueMicrotask) {
   LocalContext env;
   v8::HandleScope scope(env->GetIsolate());
   CompileRun(
       "var ext1Calls = 0;"
       "var ext2Calls = 0;");
   CompileRun("1+1;");
   CHECK_EQ(0, CompileRun("ext1Calls")->Int32Value());
   CHECK_EQ(0, CompileRun("ext2Calls")->Int32Value());
 
@@ skipping 13 matching lines @@
 
   env->GetIsolate()->EnqueueMicrotask(
       Function::New(env->GetIsolate(), MicrotaskTwo));
   CompileRun("1+1;");
   CHECK_EQ(2, CompileRun("ext1Calls")->Int32Value());
   CHECK_EQ(2, CompileRun("ext2Calls")->Int32Value());
 
   CompileRun("1+1;");
   CHECK_EQ(2, CompileRun("ext1Calls")->Int32Value());
   CHECK_EQ(2, CompileRun("ext2Calls")->Int32Value());
+
+  g_passed_to_three = NULL;
+  env->GetIsolate()->EnqueueMicrotask(MicrotaskThree);
+  CompileRun("1+1;");
+  CHECK_EQ(NULL, g_passed_to_three);
+  CHECK_EQ(2, CompileRun("ext1Calls")->Int32Value());
+  CHECK_EQ(2, CompileRun("ext2Calls")->Int32Value());
+
+  int dummy;
+  env->GetIsolate()->EnqueueMicrotask(
+      Function::New(env->GetIsolate(), MicrotaskOne));
+  env->GetIsolate()->EnqueueMicrotask(MicrotaskThree, &dummy);
+  env->GetIsolate()->EnqueueMicrotask(
+      Function::New(env->GetIsolate(), MicrotaskTwo));
+  CompileRun("1+1;");
+  CHECK_EQ(&dummy, g_passed_to_three);
+  CHECK_EQ(3, CompileRun("ext1Calls")->Int32Value());
+  CHECK_EQ(3, CompileRun("ext2Calls")->Int32Value());
+  g_passed_to_three = NULL;
 }
 
 
 static void MicrotaskExceptionOne(
     const v8::FunctionCallbackInfo<Value>& info) {
   v8::HandleScope scope(info.GetIsolate());
   CompileRun("exception1Calls++;");
   info.GetIsolate()->ThrowException(
       v8::Exception::Error(v8_str("first")));
 }
@@ skipping 1909 matching lines @@
   Local<Script> script = v8::ScriptCompiler::Compile(
       isolate, &script_source);
   Local<Value> script_name = script->GetUnboundScript()->GetScriptName();
   CHECK(!script_name.IsEmpty());
   CHECK(script_name->IsString());
   String::Utf8Value utf8_name(script_name);
   CHECK_EQ(url, *utf8_name);
   int line_number = script->GetUnboundScript()->GetLineNumber(0);
   CHECK_EQ(13, line_number);
 }