ipc/mscom/ActivationContext.cpp
author Carsten "Tomcat" Book <cbook@mozilla.com>
Wed, 01 Mar 2017 14:18:32 +0100
changeset 374327 8a5b7f743d6655ebda44bb1d2523aa6f155d0605
parent 346168 b59a4d7a3d2c57c33aae29a8844100f2223ab5bc
permissions -rw-r--r--
Backed out changeset 6d0ac4c74fd5 (bug 1298823) for frequent failures in test_request.html

/* -*- 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/mscom/ActivationContext.h"

#include "mozilla/Assertions.h"
#include "mozilla/DebugOnly.h"

namespace mozilla {
namespace mscom {

ActivationContext::ActivationContext(HMODULE aLoadFromModule)
  : mActCtx(INVALID_HANDLE_VALUE)
  , mActivationCookie(0)
{
  ACTCTX actCtx = {sizeof(actCtx)};
  actCtx.dwFlags = ACTCTX_FLAG_RESOURCE_NAME_VALID | ACTCTX_FLAG_HMODULE_VALID;
  actCtx.lpResourceName = MAKEINTRESOURCE(2);
  actCtx.hModule = aLoadFromModule;

  mActCtx = ::CreateActCtx(&actCtx);
  MOZ_ASSERT(mActCtx != INVALID_HANDLE_VALUE);
  if (mActCtx == INVALID_HANDLE_VALUE) {
    return;
  }
  if (!::ActivateActCtx(mActCtx, &mActivationCookie)) {
    ::ReleaseActCtx(mActCtx);
    mActCtx = INVALID_HANDLE_VALUE;
  }
}

ActivationContext::~ActivationContext()
{
  if (mActCtx == INVALID_HANDLE_VALUE) {
    return;
  }
  DebugOnly<BOOL> deactivated = ::DeactivateActCtx(0, mActivationCookie);
  MOZ_ASSERT(deactivated);
  ::ReleaseActCtx(mActCtx);
}

} // namespace mscom
} // namespace mozilla