зеркало из https://github.com/mozilla/gecko-dev.git
28 строки
904 B
C++
28 строки
904 B
C++
/* -*- 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 <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)) MOZ_CRASH("can't mprotect()");
|
|
}
|
|
|
|
size_t SharedMemory::SystemPageSize() { return sysconf(_SC_PAGESIZE); }
|
|
|
|
} // namespace ipc
|
|
} // namespace mozilla
|