abe7f841ca
Backed out changeset 3e8d2c47138c (bug 1454816) Backed out changeset 80ff20241831 (bug 1454816) Backed out changeset 28c2d6d2a683 (bug 1454816) Backed out changeset 236943ab4142 (bug 1454816)
40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/ipc/SharedMemory.h"
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#include <windows.h>
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namespace mozilla::ipc {
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void SharedMemory::SystemProtect(char* aAddr, size_t aSize, int aRights) {
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if (!SystemProtectFallible(aAddr, aSize, aRights)) {
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MOZ_CRASH("can't VirtualProtect()");
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}
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}
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bool SharedMemory::SystemProtectFallible(char* aAddr, size_t aSize,
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int aRights) {
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DWORD flags;
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if ((aRights & RightsRead) && (aRights & RightsWrite))
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flags = PAGE_READWRITE;
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else if (aRights & RightsRead)
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flags = PAGE_READONLY;
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else
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flags = PAGE_NOACCESS;
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DWORD oldflags;
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return VirtualProtect(aAddr, aSize, flags, &oldflags);
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}
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size_t SharedMemory::SystemPageSize() {
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SYSTEM_INFO si;
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GetSystemInfo(&si);
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return si.dwPageSize;
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}
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} // namespace mozilla::ipc
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