aboutsummaryrefslogtreecommitdiff
path: root/modules/sync/unique_queue.go
diff options
context:
space:
mode:
authorUnknwon <u@gogs.io>2017-04-04 19:29:59 -0400
committerUnknwon <u@gogs.io>2017-04-04 19:29:59 -0400
commitd05395fe906dad7741201faa69a54fef538deda9 (patch)
tree11dae6c5c9b40b8ce85c7294bd0309c03cb1199e /modules/sync/unique_queue.go
parent37b10666dea98cebf75d0c6f11ee87211ef94703 (diff)
Refactoring: rename modules -> pkg
Reasons to change: 1. Shorter than 'modules' 2. More generally used by other Go projects 3. Corresponds to the naming of '$GOPATH/pkg' directory
Diffstat (limited to 'modules/sync/unique_queue.go')
-rw-r--r--modules/sync/unique_queue.go70
1 files changed, 0 insertions, 70 deletions
diff --git a/modules/sync/unique_queue.go b/modules/sync/unique_queue.go
deleted file mode 100644
index 61b0aa5b..00000000
--- a/modules/sync/unique_queue.go
+++ /dev/null
@@ -1,70 +0,0 @@
-// Copyright 2016 The Gogs Authors. All rights reserved.
-// Use of this source code is governed by a MIT-style
-// license that can be found in the LICENSE file.
-
-package sync
-
-import (
- "github.com/Unknwon/com"
-)
-
-// UniqueQueue is a queue which guarantees only one instance of same
-// identity is in the line. Instances with same identity will be
-// discarded if there is already one in the line.
-//
-// This queue is particularly useful for preventing duplicated task
-// of same purpose.
-type UniqueQueue struct {
- table *StatusTable
- queue chan string
-}
-
-// NewUniqueQueue initializes and returns a new UniqueQueue object.
-func NewUniqueQueue(queueLength int) *UniqueQueue {
- if queueLength <= 0 {
- queueLength = 100
- }
-
- return &UniqueQueue{
- table: NewStatusTable(),
- queue: make(chan string, queueLength),
- }
-}
-
-// Queue returns channel of queue for retrieving instances.
-func (q *UniqueQueue) Queue() <-chan string {
- return q.queue
-}
-
-// Exist returns true if there is an instance with given indentity
-// exists in the queue.
-func (q *UniqueQueue) Exist(id interface{}) bool {
- return q.table.IsRunning(com.ToStr(id))
-}
-
-// AddFunc adds new instance to the queue with a custom runnable function,
-// the queue is blocked until the function exits.
-func (q *UniqueQueue) AddFunc(id interface{}, fn func()) {
- if q.Exist(id) {
- return
- }
-
- idStr := com.ToStr(id)
- q.table.Lock()
- q.table.pool[idStr] = true
- if fn != nil {
- fn()
- }
- q.table.Unlock()
- q.queue <- idStr
-}
-
-// Add adds new instance to the queue.
-func (q *UniqueQueue) Add(id interface{}) {
- q.AddFunc(id, nil)
-}
-
-// Remove removes instance from the queue.
-func (q *UniqueQueue) Remove(id interface{}) {
- q.table.Stop(com.ToStr(id))
-}