michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * vim: sw=2 ts=8 et :
michael@0:  */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include <windows.h>
michael@0: 
michael@0: #include "mozilla/ipc/SharedMemory.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace ipc {
michael@0: 
michael@0: void
michael@0: SharedMemory::SystemProtect(char* aAddr, size_t aSize, int aRights)
michael@0: {
michael@0:   DWORD flags;
michael@0:   if ((aRights & RightsRead) && (aRights & RightsWrite))
michael@0:     flags = PAGE_READWRITE;
michael@0:   else if (aRights & RightsRead)
michael@0:     flags = PAGE_READONLY;
michael@0:   else
michael@0:     flags = PAGE_NOACCESS;
michael@0: 
michael@0:   DWORD oldflags;
michael@0:   if (!VirtualProtect(aAddr, aSize, flags, &oldflags))
michael@0:     NS_RUNTIMEABORT("can't VirtualProtect()");
michael@0: }
michael@0: 
michael@0: size_t
michael@0: SharedMemory::SystemPageSize()
michael@0: {
michael@0:   SYSTEM_INFO si;
michael@0:   GetSystemInfo(&si);
michael@0:   return si.dwPageSize;
michael@0: }
michael@0: 
michael@0: } // namespace ipc
michael@0: } // namespace mozilla