Use task_t, thread_t, and exception_handler_t uniformly

util/mach/mach_extensions.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #include "util/mach/mach_extensions.h"
 
 #include <AvailabilityMacros.h>
 #include <pthread.h>
 
 #include "util/mac/mac_util.h"
 
 namespace crashpad {
 
-mach_port_t MachThreadSelf() {
-  // The pthreads library keeps its own copy of the mach_port_t. Using it does
+thread_t MachThreadSelf() {
+  // The pthreads library keeps its own copy of the thread port. Using it does
   // not increment its reference count.
   return pthread_mach_thread_np(pthread_self());
 }
 
 exception_mask_t ExcMaskAll() {
   // This is necessary because of the way that the kernel validates
   // exception_mask_t arguments to
   // {host,task,thread}_{get,set,swap}_exception_ports(). It is strict,
   // rejecting attempts to operate on any bits that it does not recognize. See
   // 10.9.4 xnu-2422.110.17/osfmk/mach/ipc_host.c and
@@ skipping 26 matching lines @@
   }
 #endif
 
   // 10.9 added EXC_MASK_GUARD. See 10.9.4
   // xnu-2422.110.17/osfmk/mach/exception_types.h.
   const exception_mask_t kExcMaskAll_10_9 = kExcMaskAll_10_8 | EXC_MASK_GUARD;
   return kExcMaskAll_10_9;
 }
 
 }  // namespace crashpad