gecko-dev/dom/ipc/CrashReporterChild.cpp
Nathan Froyd 835e1550cb Bug 1212027 - part 5 - add LoneManagedOrNull for simplifying a lot of upcoming code; r=jld
A lot of existing code has variations on:

  if (ManagedPFooChild().Length()) {
    ...(ManagedPFooChild()[0])...
  }
  // Do something with nullptr, or some other action.

It's pretty reasonable to repeat this code when the managed protocols
are stored in an array; the code gets much less nice when managed
protocols are stored in a hashtable.  Let's write a small utility
function to handle those details for us.  Then when we change the
underlying storage, we only need to update this function, rather than a
bunch of callsites.

ProtocolUtils.h is included by all the generated IPDL headers, so
LoneManagedOrNull should be available everywhere the above pattern would
be encountered.
2015-10-07 20:15:56 -04:00

43 lines
1.2 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/plugins/PluginModuleChild.h"
#include "ContentChild.h"
#include "CrashReporterChild.h"
#include "nsXULAppAPI.h"
using mozilla::plugins::PluginModuleChild;
namespace mozilla {
namespace dom {
/*static*/
PCrashReporterChild*
CrashReporterChild::GetCrashReporter()
{
const ManagedContainer<PCrashReporterChild>* reporters = nullptr;
switch (XRE_GetProcessType()) {
case GeckoProcessType_Content: {
ContentChild* child = ContentChild::GetSingleton();
reporters = &child->ManagedPCrashReporterChild();
break;
}
case GeckoProcessType_Plugin: {
PluginModuleChild* child = PluginModuleChild::GetChrome();
reporters = &child->ManagedPCrashReporterChild();
break;
}
default:
break;
}
if (!reporters) {
return nullptr;
}
return LoneManagedOrNull(*reporters);
}
} // namespace dom
} // namespace mozilla