Mojo: Optimize VerifyUserPointer().

mojo/system/core_impl.cc

 // Copyright 2013 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 "mojo/system/core_impl.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "mojo/system/dispatcher.h"
@@ skipping 88 matching lines @@
 MojoResult CoreImpl::Wait(MojoHandle handle,
                           MojoWaitFlags flags,
                           MojoDeadline deadline) {
   return WaitManyInternal(&handle, &flags, 1, deadline);
 }
 
 MojoResult CoreImpl::WaitMany(const MojoHandle* handles,
                               const MojoWaitFlags* flags,
                               uint32_t num_handles,
                               MojoDeadline deadline) {
-  if (!VerifyUserPointer(handles, num_handles, sizeof(handles[0])))
+  if (!VerifyUserPointer<MojoHandle>(handles, num_handles))
     return MOJO_RESULT_INVALID_ARGUMENT;
-  if (!VerifyUserPointer(flags, num_handles, sizeof(flags[0])))
+  if (!VerifyUserPointer<MojoWaitFlags>(flags, num_handles))
     return MOJO_RESULT_INVALID_ARGUMENT;
   if (num_handles < 1)
     return MOJO_RESULT_INVALID_ARGUMENT;
   if (num_handles > kMaxWaitManyNumHandles)
     return MOJO_RESULT_RESOURCE_EXHAUSTED;
   return WaitManyInternal(handles, flags, num_handles, deadline);
 }
 
 MojoResult CoreImpl::CreateMessagePipe(MojoHandle* handle_0,
                                        MojoHandle* handle_1) {
@@ skipping 144 matching lines @@
   // |Wait()|/|WaitMany()| call. (Only after doing this can |waiter| be
   // destroyed, but this would still be required if the waiter were in TLS.)
   for (i = 0; i < num_added; i++)
     dispatchers[i]->RemoveWaiter(&waiter);
 
   return rv;
 }
 
 }  // namespace system
 }  // namespace mojo