mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-27 23:02:20 +00:00
39 lines
923 B
C++
39 lines
923 B
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* vim: sw=2 ts=8 et :
|
|
*/
|
|
/* 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 <sys/mman.h> // mprotect
|
|
#include <unistd.h> // sysconf
|
|
|
|
#include "mozilla/ipc/SharedMemory.h"
|
|
|
|
namespace mozilla {
|
|
namespace ipc {
|
|
|
|
void
|
|
SharedMemory::SystemProtect(char* aAddr, size_t aSize, int aRights)
|
|
{
|
|
int flags = 0;
|
|
if (aRights & RightsRead)
|
|
flags |= PROT_READ;
|
|
if (aRights & RightsWrite)
|
|
flags |= PROT_WRITE;
|
|
if (RightsNone == aRights)
|
|
flags = PROT_NONE;
|
|
|
|
if (0 < mprotect(aAddr, aSize, flags))
|
|
NS_RUNTIMEABORT("can't mprotect()");
|
|
}
|
|
|
|
size_t
|
|
SharedMemory::SystemPageSize()
|
|
{
|
|
return sysconf(_SC_PAGESIZE);
|
|
}
|
|
|
|
} // namespace ipc
|
|
} // namespace mozilla
|