QuicAlarms are now allocated out of an arena in QuicConnection

net/quic/quic_utils.h

 // 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.
 //
 // Some helpers for quic.
 
 #ifndef NET_QUIC_QUIC_UTILS_H_
 #define NET_QUIC_QUIC_UTILS_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/strings/string_piece.h"
 #include "net/base/int128.h"
 #include "net/base/net_export.h"
 #include "net/quic/quic_protocol.h"
 
+#ifdef _MSC_VER
+// MSVC 2013 and prior don't have alignof or aligned(); they have __alignof and
+// a __declspec instead.
+#define QUIC_ALIGN_OF __alignof
+#define QUIC_ALIGNED(X) __declspec(align(X))
+#else
+#define QUIC_ALIGN_OF alignof
+#define QUIC_ALIGNED(X) __attribute__((aligned(X)))
+#endif  // _MSC_VER
+
 namespace net {
 
 class NET_EXPORT_PRIVATE QuicUtils {
  public:
   enum Priority {
     LOCAL_PRIORITY,
     PEER_PRIORITY,
   };
 
   // Returns the 64 bit FNV1a hash of the data.  See
@@ skipping 73 matching lines @@
 inline QuicIOVector MakeIOVector(base::StringPiece str, struct iovec* iov) {
   iov->iov_base = const_cast<char*>(str.data());
   iov->iov_len = static_cast<size_t>(str.size());
   QuicIOVector quic_iov(iov, 1, str.size());
   return quic_iov;
 }
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_UTILS_H_