mac: Periodically shim new malloc zones immediately after startup.

content/child/child_thread_impl.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 "content/child/child_thread_impl.h"
 
 #include <signal.h>
 #include <string>
 #include <utility>
 
@@ skipping 61 matching lines @@
 #include "services/service_manager/public/cpp/interface_factory.h"
 #include "services/service_manager/public/cpp/interface_provider.h"
 #include "services/service_manager/public/cpp/interface_registry.h"
 #include "services/service_manager/runner/common/client_util.h"
 
 #if defined(OS_POSIX)
 #include "base/posix/global_descriptors.h"
 #include "content/public/common/content_descriptors.h"
 #endif
 
+#if defined(OS_MACOSX)
+#include "base/allocator/allocator_interception_mac.h"
+#endif
+
 using tracked_objects::ThreadData;
 
 namespace content {
 namespace {
 
 // How long to wait for a connection to the browser process before giving up.
 const int kConnectionTimeoutS = 15;
 
 base::LazyInstance<base::ThreadLocalPointer<ChildThreadImpl>>::DestructorAtExit
     g_lazy_tls = LAZY_INSTANCE_INITIALIZER;
@@ skipping 460 matching lines @@
   int connection_timeout = kConnectionTimeoutS;
   std::string connection_override =
       base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
           switches::kIPCConnectionTimeout);
   if (!connection_override.empty()) {
     int temp;
     if (base::StringToInt(connection_override, &temp))
       connection_timeout = temp;
   }
 
+#if defined(OS_MACOSX)
+  if (base::CommandLine::InitializedForCurrentProcess() &&
+      base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableHeapProfiling)) {
+    base::allocator::PeriodicallyShimNewMallocZones();
+  }
+#endif
+
   message_loop_->task_runner()->PostDelayedTask(
       FROM_HERE, base::Bind(&ChildThreadImpl::EnsureConnected,
                             channel_connected_factory_->GetWeakPtr()),
       base::TimeDelta::FromSeconds(connection_timeout));
 
 #if defined(OS_ANDROID)
   g_quit_closure.Get().BindToMainThread();
 #endif
 }
 
@@ skipping 303 matching lines @@
   connected_to_browser_ = true;
   child_info_ = local_info;
   browser_info_ = remote_info;
 }
 
 bool ChildThreadImpl::IsInBrowserProcess() const {
   return static_cast<bool>(browser_process_io_runner_);
 }
 
 }  // namespace content