Instrumenting read callbacks to find jank in TCPSocketWin::Core::ReadDelegate::OnObjectSignaled

net/socket/ssl_client_socket_nss.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.
 
 // This file includes code SSLClientSocketNSS::DoVerifyCertComplete() derived
 // from AuthCertificateCallback() in
 // mozilla/security/manager/ssl/src/nsNSSCallbacks.cpp.
 
 /* ***** BEGIN LICENSE BLOCK *****
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
@@ skipping 53 matching lines @@
 #include <limits>
 #include <map>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback_helpers.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "base/metrics/histogram.h"
+#include "base/profiler/scoped_profile.h"
 #include "base/single_thread_task_runner.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/values.h"
 #include "crypto/ec_private_key.h"
 #include "crypto/nss_util.h"
@@ skipping 2122 matching lines @@
   user_read_buf_len_ = 0;
   int amount_in_read_buffer = memio_GetReadableBufferSize(nss_bufs_);
   // This is used to curry the |amount_int_read_buffer| and |user_cb| back to
   // the network task runner.
   PostOrRunCallback(
       FROM_HERE,
       base::Bind(&Core::OnNSSBufferUpdated, this, amount_in_read_buffer));
   PostOrRunCallback(
       FROM_HERE,
       base::Bind(&Core::DidNSSRead, this, rv));
+  // TODO(vadimt): Remove ScopedProfile below once crbug.com/418183 is fixed.
+  tracked_objects::ScopedProfile tracking_profile(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "SSLClientSocketNSS::Core::DoReadCallback"));
   PostOrRunCallback(
       FROM_HERE,
       base::Bind(base::ResetAndReturn(&user_read_callback_), rv));
 }
 
 void SSLClientSocketNSS::Core::DoWriteCallback(int rv) {
   DCHECK(OnNSSTaskRunner());
   DCHECK_NE(ERR_IO_PENDING, rv);
   DCHECK(!user_write_callback_.is_null());
 
@@ skipping 1297 matching lines @@
 scoped_refptr<X509Certificate>
 SSLClientSocketNSS::GetUnverifiedServerCertificateChain() const {
   return core_->state().server_cert.get();
 }
 
 ChannelIDService* SSLClientSocketNSS::GetChannelIDService() const {
   return channel_id_service_;
 }
 
 }  // namespace net