Introduce IsUndefined(Isolate*) and IsTheHole(Isolate*)

src/d8-posix.cc

 // Copyright 2009 the V8 project 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 <errno.h>
 #include <fcntl.h>
 #include <signal.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
@@ skipping 513 matching lines @@
     exit(1);
   }
 
   // Parent process.  Ensure that we clean up if we exit this function early.
   ZombieProtector child_waiter(pid);
   close(exec_error_fds[kWriteFD]);
   close(stdout_fds[kWriteFD]);
   OpenFDCloser error_read_closer(exec_error_fds[kReadFD]);
   OpenFDCloser stdout_read_closer(stdout_fds[kReadFD]);
 
-  if (!ChildLaunchedOK(args.GetIsolate(), exec_error_fds)) return;
+  Isolate* isolate = args.GetIsolate();
+  if (!ChildLaunchedOK(isolate, exec_error_fds)) return;
 
-  Local<Value> accumulator = GetStdout(args.GetIsolate(), stdout_fds[kReadFD],
-                                       start_time, read_timeout, total_timeout);
+  Local<Value> accumulator = GetStdout(isolate, stdout_fds[kReadFD], start_time,
+                                       read_timeout, total_timeout);
   if (accumulator->IsUndefined()) {
     kill(pid, SIGINT);  // On timeout, kill the subprocess.
     args.GetReturnValue().Set(accumulator);
     return;
   }
 
-  if (!WaitForChild(args.GetIsolate(),
-                    pid,
-                    child_waiter,
-                    start_time,
-                    read_timeout,
+  if (!WaitForChild(isolate, pid, child_waiter, start_time, read_timeout,
                     total_timeout)) {
     return;
   }
 
   args.GetReturnValue().Set(accumulator);
 }
 
 
 void Shell::ChangeDirectory(const v8::FunctionCallbackInfo<v8::Value>& args) {
   if (args.Length() != 1) {
@@ skipping 223 matching lines @@
                 FunctionTemplate::New(isolate, SetUMask));
   os_templ->Set(String::NewFromUtf8(isolate, "mkdirp", NewStringType::kNormal)
                     .ToLocalChecked(),
                 FunctionTemplate::New(isolate, MakeDirectory));
   os_templ->Set(String::NewFromUtf8(isolate, "rmdir", NewStringType::kNormal)
                     .ToLocalChecked(),
                 FunctionTemplate::New(isolate, RemoveDirectory));
 }
 
 }  // namespace v8