mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-29 19:10:26 +00:00
651417a085
We now have PrivateInodeVMObject and SharedInodeVMObject, corresponding to MAP_PRIVATE and MAP_SHARED respectively. Note that PrivateInodeVMObject is not used yet.
64 lines
2.3 KiB
C++
64 lines
2.3 KiB
C++
/*
|
|
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <Kernel/FileSystem/Inode.h>
|
|
#include <Kernel/VM/MemoryManager.h>
|
|
#include <Kernel/VM/Region.h>
|
|
#include <Kernel/VM/SharedInodeVMObject.h>
|
|
|
|
namespace Kernel {
|
|
|
|
NonnullRefPtr<SharedInodeVMObject> SharedInodeVMObject::create_with_inode(Inode& inode)
|
|
{
|
|
size_t size = inode.size();
|
|
if (inode.shared_vmobject())
|
|
return *inode.shared_vmobject();
|
|
auto vmobject = adopt(*new SharedInodeVMObject(inode, size));
|
|
vmobject->inode().set_shared_vmobject(*vmobject);
|
|
return vmobject;
|
|
}
|
|
|
|
NonnullRefPtr<VMObject> SharedInodeVMObject::clone()
|
|
{
|
|
return adopt(*new SharedInodeVMObject(*this));
|
|
}
|
|
|
|
SharedInodeVMObject::SharedInodeVMObject(Inode& inode, size_t size)
|
|
: InodeVMObject(inode, size)
|
|
{
|
|
}
|
|
|
|
SharedInodeVMObject::SharedInodeVMObject(const SharedInodeVMObject& other)
|
|
: InodeVMObject(other)
|
|
{
|
|
}
|
|
|
|
SharedInodeVMObject::~SharedInodeVMObject()
|
|
{
|
|
ASSERT(inode().shared_vmobject() == this);
|
|
}
|
|
|
|
}
|