[NaCl SDK] Upate atomic ops in nacl_io

native_client_sdk/src/libraries/nacl_io/mount_node_html5fs.cc

 /* Copyright (c) 2012 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 "nacl_io/mount_node_html5fs.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <ppapi/c/pp_completion_callback.h>
@@ skipping 137 matching lines @@
 
   if (offs + size >= max)
     size = max - offs;
 
   memcpy(pdir, reinterpret_cast<char*>(dirents.data()) + offs, size);
   *out_bytes = size;
   return 0;
 }
 
 Error MountNodeHtml5Fs::GetStat(struct stat* stat) {
-  AutoLock lock(&lock_);
+  AUTO_LOCK(node_lock_);
 
   PP_FileInfo info;
   int32_t result = mount_->ppapi()->GetFileRefInterface()->Query(
       fileref_resource_, &info, PP_BlockUntilComplete());
   if (result != PP_OK)
     return PPErrorToErrno(result);
 
   // Fill in known info here.
   memcpy(stat, &stat_, sizeof(stat_));
 
@@ skipping 68 matching lines @@
   if (result < 0)
     return PPErrorToErrno(result);
 
   *out_bytes = result;
   return 0;
 }
 
 Error MountNodeHtml5Fs::GetSize(size_t* out_size) {
   *out_size = 0;
 
-  AutoLock lock(&lock_);
+  AUTO_LOCK(node_lock_);
 
   PP_FileInfo info;
   int32_t result = mount_->ppapi()->GetFileIoInterface()
       ->Query(fileio_resource_, &info, PP_BlockUntilComplete());
   if (result != PP_OK)
     return PPErrorToErrno(result);
 
   *out_size = static_cast<size_t>(info.size);
   return 0;
 }
@@ skipping 40 matching lines @@
     mount_->ppapi()->GetFileIoInterface()->Close(fileio_resource_);
     mount_->ppapi()->ReleaseResource(fileio_resource_);
   }
 
   mount_->ppapi()->ReleaseResource(fileref_resource_);
   fileio_resource_ = 0;
   fileref_resource_ = 0;
   MountNode::Destroy();
 }