gecko-dev/ipc/mscom/ProcessRuntime.h
Doug Thayer b5f7314e3e Bug 1714212 - Ensure COM initialized prior to showing skeleton UI r=Jamie,aklotz,tkikuchi
This implements Jamie's suggested fixes for a screenreader issue when the
skeleton UI is enabled. Most of the work here is just pulling out pieces from the
files we needed to include in mozglue so that any references to, say, nsString
or other pieces from libxul either no longer exist or are only included when
building libxul. In a few cases this meant creating whole files to house single
functions, which isn't so pretty, but it was the best I could come up with to
get the job done.

Differential Revision: https://phabricator.services.mozilla.com/D117663
2021-07-07 22:37:14 +00:00

97 lines
3.1 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/. */
#ifndef mozilla_mscom_ProcessRuntime_h
#define mozilla_mscom_ProcessRuntime_h
#include "mozilla/Attributes.h"
#if defined(ACCESSIBILITY)
# include "mozilla/mscom/ActivationContext.h"
# include "mozilla/Maybe.h"
#endif // defined(ACCESSIBILITY)
#include "mozilla/mscom/ApartmentRegion.h"
#include "nsWindowsHelpers.h"
#if defined(MOZILLA_INTERNAL_API)
# include "nsXULAppAPI.h"
#endif // defined(MOZILLA_INTERNAL_API)
namespace mozilla {
namespace mscom {
class MOZ_NON_TEMPORARY_CLASS ProcessRuntime final {
#if !defined(MOZILLA_INTERNAL_API)
public:
#endif // defined(MOZILLA_INTERNAL_API)
enum class ProcessCategory {
GeckoBrowserParent,
// We give Launcher its own process category, but internally to this class
// it should be treated identically to GeckoBrowserParent.
Launcher = GeckoBrowserParent,
GeckoChild,
Service,
};
// This constructor is only public when compiled outside of XUL
explicit ProcessRuntime(const ProcessCategory aProcessCategory);
public:
#if defined(MOZILLA_INTERNAL_API)
ProcessRuntime();
~ProcessRuntime();
#else
~ProcessRuntime() = default;
#endif // defined(MOZILLA_INTERNAL_API)
explicit operator bool() const { return SUCCEEDED(mInitResult); }
HRESULT GetHResult() const { return mInitResult; }
ProcessRuntime(const ProcessRuntime&) = delete;
ProcessRuntime(ProcessRuntime&&) = delete;
ProcessRuntime& operator=(const ProcessRuntime&) = delete;
ProcessRuntime& operator=(ProcessRuntime&&) = delete;
/**
* @return 0 if call is in-process or resolving the calling thread failed,
* otherwise contains the thread id of the calling thread.
*/
static DWORD GetClientThreadId();
private:
#if defined(MOZILLA_INTERNAL_API)
explicit ProcessRuntime(const GeckoProcessType aProcessType);
# if defined(MOZ_SANDBOX)
void InitUsingPersistentMTAThread(const nsAutoHandle& aCurThreadToken);
# endif // defined(MOZ_SANDBOX)
#endif // defined(MOZILLA_INTERNAL_API)
void InitInsideApartment();
#if defined(MOZILLA_INTERNAL_API)
static void PostInit();
#endif // defined(MOZILLA_INTERNAL_API)
static HRESULT InitializeSecurity(const ProcessCategory aProcessCategory);
static COINIT GetDesiredApartmentType(const ProcessCategory aProcessCategory);
private:
HRESULT mInitResult;
const ProcessCategory mProcessCategory;
#if defined(ACCESSIBILITY) && \
(defined(MOZILLA_INTERNAL_API) || defined(MOZ_HAS_MOZGLUE))
Maybe<ActivationContextRegion> mActCtxRgn;
#endif // defined(ACCESSIBILITY) && (defined(MOZILLA_INTERNAL_API) ||
// defined(MOZ_HAS_MOZGLUE))
ApartmentRegion mAptRegion;
private:
#if defined(MOZILLA_INTERNAL_API)
static ProcessRuntime* sInstance;
#endif // defined(MOZILLA_INTERNAL_API)
};
} // namespace mscom
} // namespace mozilla
#endif // mozilla_mscom_ProcessRuntime_h