sapling/eden/fs/inodes/CheckoutContext.h
Jyothsna Konisa 19df19d994 Adding lastCheckoutTime to EdenMount and initializing timestamps of FileInode with lastCheckoutTime
Summary:
Added a new data member lastCheckoutTime to EdenMount class to store the time when checkout operation is performed. Also added a method to get the last checkout time which internally returns the lastCheckoutTime in EdenMount class.

Added new fields atime,mtime,ctime in FileInode::State structure to keep track of timestamps in memory. Initialzed timestamps in FileInode::State constructor by calling getLastCheckOutTime from EdenMount class.

Still have to add timestamp tracking for directories and have to initialize them with lastCheckout time.This probably will be done in a seperate diff.

Reviewed By: bolinfest

Differential Revision: D5437682

fbshipit-source-id: e3d6b1bc0c2192538dd3b0d9a6017ceb3ca0843d
2017-07-27 11:52:31 -07:00

113 lines
3.0 KiB
C++

/*
* Copyright (c) 2004-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
*/
#pragma once
#include <folly/Synchronized.h>
#include <vector>
#include "eden/fs/inodes/EdenMount.h"
#include "eden/fs/inodes/InodePtrFwd.h"
#include "eden/fs/service/gen-cpp2/eden_types.h"
#include "eden/fs/utils/PathFuncs.h"
namespace folly {
class exception_wrapper;
template <typename T>
class Future;
class Unit;
}
namespace facebook {
namespace eden {
class CheckoutConflict;
class TreeInode;
class Tree;
/**
* CheckoutContext maintains state during a checkout operation.
*/
class CheckoutContext {
public:
CheckoutContext(
folly::Synchronized<EdenMount::ParentInfo>::LockedPtr&& parentsLock,
bool force);
~CheckoutContext();
/**
* Returns true if the checkout operation should actually update the inodes,
* or false if it should do a dry run, looking for conflicts without actually
* updating the inode contents.
*/
bool shouldApplyChanges() const {
// TODO: make this configurable on checkout start
return true;
}
/**
* Returns true if this checkout operation should force the new inode
* contents to look like the data in the Tree being checked out, even if
* there are conflicts.
*
* This will cause the checkout to always update files with conflicts to the
* new contents, rather than just reporting and skipping files with
* conflicts.
*
* forceUpdate() can only return true when shouldApplyChanges() is also true.
*/
bool forceUpdate() const {
return force_;
}
/**
* Start the checkout operation.
*/
void start(RenameLock&& renameLock);
/**
* Complete the checkout operation
*
* Returns the list of conflicts and errors that were encountered during the
* operation.
*/
std::vector<CheckoutConflict> finish(Hash newSnapshot);
void addConflict(ConflictType type, RelativePathPiece path);
void
addConflict(ConflictType type, TreeInode* parent, PathComponentPiece name);
void addConflict(ConflictType type, InodeBase* inode);
void addError(
TreeInode* parent,
PathComponentPiece name,
const folly::exception_wrapper& ew);
/**
* Get a reference to the rename lock.
*
* This is mostly used for APIs that require proof that we are currently
* holding the lock.
*/
const RenameLock& renameLock() const {
return renameLock_;
}
private:
bool const force_{false};
folly::Synchronized<EdenMount::ParentInfo>::LockedPtr parentsLock_;
RenameLock renameLock_;
// The checkout processing may occur across many threads,
// if some data load operations complete asynchronously on other threads.
// Therefore access to the conflicts list must be synchronized.
folly::Synchronized<std::vector<CheckoutConflict>> conflicts_;
};
}
}