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-rw-r--r--ipc/glue/SharedMemory_windows.cpp41
1 files changed, 41 insertions, 0 deletions
diff --git a/ipc/glue/SharedMemory_windows.cpp b/ipc/glue/SharedMemory_windows.cpp
new file mode 100644
index 0000000000..1cc93687af
--- /dev/null
+++ b/ipc/glue/SharedMemory_windows.cpp
@@ -0,0 +1,41 @@
+/* -*- 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 <windows.h>
+
+#include "mozilla/ipc/SharedMemory.h"
+
+namespace mozilla {
+namespace ipc {
+
+void SharedMemory::SystemProtect(char* aAddr, size_t aSize, int aRights) {
+ if (!SystemProtectFallible(aAddr, aSize, aRights)) {
+ MOZ_CRASH("can't VirtualProtect()");
+ }
+}
+
+bool SharedMemory::SystemProtectFallible(char* aAddr, size_t aSize,
+ int aRights) {
+ DWORD flags;
+ if ((aRights & RightsRead) && (aRights & RightsWrite))
+ flags = PAGE_READWRITE;
+ else if (aRights & RightsRead)
+ flags = PAGE_READONLY;
+ else
+ flags = PAGE_NOACCESS;
+
+ DWORD oldflags;
+ return VirtualProtect(aAddr, aSize, flags, &oldflags);
+}
+
+size_t SharedMemory::SystemPageSize() {
+ SYSTEM_INFO si;
+ GetSystemInfo(&si);
+ return si.dwPageSize;
+}
+
+} // namespace ipc
+} // namespace mozilla