Make SharedMemoryHandle a class on Mac.

ipc/ipc_message_utils.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 "ipc/ipc_message_utils.h"
 
 #include "base/files/file_path.h"
 #include "base/json/json_writer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/nullable_string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "base/values.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_message_attachment.h"
 #include "ipc/ipc_message_attachment_set.h"
 
 #if defined(OS_POSIX)
 #include "ipc/ipc_platform_file_attachment_posix.h"
 #endif
 
+#if defined(OS_MACOSX) && !defined(OS_IOS)
+#include "base/memory/shared_memory_handle.h"
+#endif  // defined(OS_MACOSX) && !defined(OS_IOS)
+
 #if defined(OS_WIN)
 #include <tchar.h>
 #endif
 
 namespace IPC {
 
 namespace {
 
 const int kMaxRecursionDepth = 100;
 
@@ skipping 476 matching lines @@
 void ParamTraits<base::FileDescriptor>::Log(const param_type& p,
                                             std::string* l) {
   if (p.auto_close) {
     l->append(base::StringPrintf("FD(%d auto-close)", p.fd));
   } else {
     l->append(base::StringPrintf("FD(%d)", p.fd));
   }
 }
 #endif  // defined(OS_POSIX)
 
+#if defined(OS_MACOSX) && !defined(OS_IOS)
+void ParamTraits<base::SharedMemoryHandle>::Write(Message* m,
+                                                  const param_type& p) {
+  uint32_t mechanism = p.GetMechanismForWire();
+  WriteParam(m, mechanism);
+
+  if (p.IsBackedByPOSIXFd())
+    ParamTraits<base::FileDescriptor>::Write(m, *p.GetFileDescriptor());
+}
+
+bool ParamTraits<base::SharedMemoryHandle>::Read(const Message* m,
+                                                 base::PickleIterator* iter,
+                                                 param_type* r) {
+  uint32_t mechanism;
+  if (!ReadParam(m, iter, &mechanism))
+    return false;
+
+  bool success = r->SetMechanismFromWire(mechanism);
+  if (!success)
+    return false;
+
+  if (r->IsBackedByPOSIXFd()) {
+    return ParamTraits<base::FileDescriptor>::Read(m, iter,
+                                                   r->GetFileDescriptor());
+  }
+
+  return true;
+}
+
+void ParamTraits<base::SharedMemoryHandle>::Log(const param_type& p,
+                                                std::string* l) {
+  if (p.IsBackedByPOSIXFd()) {
+    l->append(base::StringPrintf("Mechanism POSIX Fd"));
+    ParamTraits<base::FileDescriptor>::Log(*p.GetFileDescriptor(), l);
+  }
+}
+#endif
+
 void ParamTraits<base::FilePath>::Write(Message* m, const param_type& p) {
   p.WriteToPickle(m);
 }
 
 bool ParamTraits<base::FilePath>::Read(const Message* m,
                                        base::PickleIterator* iter,
                                        param_type* r) {
   return r->ReadFromPickle(iter);
 }
 
@@ skipping 337 matching lines @@
   return result;
 }
 
 void ParamTraits<MSG>::Log(const param_type& p, std::string* l) {
   l->append("<MSG>");
 }
 
 #endif  // OS_WIN
 
 }  // namespace IPC