You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
44 lines
2.1 KiB
44 lines
2.1 KiB
7 years ago
|
// Copyright (c) 2014-2015 The Notify Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by the MIT license that can be
|
||
|
|
// found in the LICENSE file.
|
||
|
|
|
||
|
|
// Package notify implements access to filesystem events.
|
||
|
|
//
|
||
|
|
// Notify is a high-level abstraction over filesystem watchers like inotify,
|
||
|
|
// kqueue, FSEvents, FEN or ReadDirectoryChangesW. Watcher implementations are
|
||
|
|
// split into two groups: ones that natively support recursive notifications
|
||
|
|
// (FSEvents and ReadDirectoryChangesW) and ones that do not (inotify, kqueue, FEN).
|
||
|
|
// For more details see watcher and recursiveWatcher interfaces in watcher.go
|
||
|
|
// source file.
|
||
|
|
//
|
||
|
|
// On top of filesystem watchers notify maintains a watchpoint tree, which provides
|
||
|
|
// a strategy for creating and closing filesystem watches and dispatching filesystem
|
||
|
|
// events to user channels.
|
||
|
|
//
|
||
|
|
// An event set is just an event list joint using bitwise OR operator
|
||
|
|
// into a single event value.
|
||
|
|
// Both the platform-independent (see Constants) and specific events can be used.
|
||
|
|
// Refer to the event_*.go source files for information about the available
|
||
|
|
// events.
|
||
|
|
//
|
||
|
|
// A filesystem watch or just a watch is platform-specific entity which represents
|
||
|
|
// a single path registered for notifications for specific event set. Setting a watch
|
||
|
|
// means using platform-specific API calls for creating / initializing said watch.
|
||
|
|
// For each watcher the API call is:
|
||
|
|
//
|
||
|
|
// - FSEvents: FSEventStreamCreate
|
||
|
|
// - inotify: notify_add_watch
|
||
|
|
// - kqueue: kevent
|
||
|
|
// - ReadDirectoryChangesW: CreateFile+ReadDirectoryChangesW
|
||
|
|
// - FEN: port_get
|
||
|
|
//
|
||
|
|
// To rewatch means to either shrink or expand an event set that was previously
|
||
|
|
// registered during watch operation for particular filesystem watch.
|
||
|
|
//
|
||
|
|
// A watchpoint is a list of user channel and event set pairs for particular
|
||
|
|
// path (watchpoint tree's node). A single watchpoint can contain multiple
|
||
|
|
// different user channels registered to listen for one or more events. A single
|
||
|
|
// user channel can be registered in one or more watchpoints, recursive and
|
||
|
|
// non-recursive ones as well.
|
||
|
|
package notify
|