The Tor Browser: ipc/glue/SharedMemory

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-

     2  * vim: sw=2 ts=8 et :

     3  */

     4 /* This Source Code Form is subject to the terms of the Mozilla Public

     5  * License, v. 2.0. If a copy of the MPL was not distributed with this

     6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     8 #include <windows.h>

    10 #include "mozilla/ipc/SharedMemory.h"

    12 namespace mozilla {

    13 namespace ipc {

    15 void

    16 SharedMemory::SystemProtect(char* aAddr, size_t aSize, int aRights)

    17 {

    18   DWORD flags;

    19   if ((aRights & RightsRead) && (aRights & RightsWrite))

    20     flags = PAGE_READWRITE;

    21   else if (aRights & RightsRead)

    22     flags = PAGE_READONLY;

    23   else

    24     flags = PAGE_NOACCESS;

    26   DWORD oldflags;

    27   if (!VirtualProtect(aAddr, aSize, flags, &oldflags))

    28     NS_RUNTIMEABORT("can't VirtualProtect()");

    29 }

    31 size_t

    32 SharedMemory::SystemPageSize()

    33 {

    34   SYSTEM_INFO si;

    35   GetSystemInfo(&si);

    36   return si.dwPageSize;

    37 }

    39 } // namespace ipc

    40 } // namespace mozilla

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