Optimize ParamTraits<float> and ParamTraits<double>

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"
@@ skipping 293 matching lines @@
 }
 
 void ParamTraits<long long>::Log(const param_type& p, std::string* l) {
   l->append(base::Int64ToString(static_cast<int64>(p)));
 }
 
 void ParamTraits<unsigned long long>::Log(const param_type& p, std::string* l) {
   l->append(base::Uint64ToString(p));
 }
 
-void ParamTraits<float>::Write(Message* m, const param_type& p) {
-  m->WriteData(reinterpret_cast<const char*>(&p), sizeof(param_type));
-}
-
-bool ParamTraits<float>::Read(const Message* m, PickleIterator* iter,
-                              param_type* r) {
-  const char *data;
-  int data_size;
-  if (!m->ReadData(iter, &data, &data_size) ||
-      data_size != sizeof(param_type)) {
-    NOTREACHED();
-    return false;
-  }
-  memcpy(r, data, sizeof(param_type));
-  return true;
-}
-
 void ParamTraits<float>::Log(const param_type& p, std::string* l) {
   l->append(base::StringPrintf("%e", p));
 }
 
 void ParamTraits<double>::Write(Message* m, const param_type& p) {
-  m->WriteData(reinterpret_cast<const char*>(&p), sizeof(param_type));
+  m->WriteBytes(reinterpret_cast<const char*>(&p), sizeof(param_type));
 }
 
 bool ParamTraits<double>::Read(const Message* m, PickleIterator* iter,
                                param_type* r) {
   const char *data;
-  int data_size;
-  if (!m->ReadData(iter, &data, &data_size) ||
-      data_size != sizeof(param_type)) {
+  if (!m->ReadBytes(iter, &data, sizeof(*r))) {
     NOTREACHED();
     return false;
   }
   memcpy(r, data, sizeof(param_type));
   return true;
 }
 
 void ParamTraits<double>::Log(const param_type& p, std::string* l) {
   l->append(base::StringPrintf("%e", p));
 }
@@ skipping 487 matching lines @@
   return result;
 }
 
 void ParamTraits<MSG>::Log(const param_type& p, std::string* l) {
   l->append("<MSG>");
 }
 
 #endif  // OS_WIN
 
 }  // namespace IPC