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modules/sync: rename SingleInstancePool to ExclusivePool

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This commit is contained in:
Unknwon 2016-08-30 15:19:53 -07:00
parent c0c1a4b01b
commit 43297148b2
3 changed files with 12 additions and 11 deletions
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2
models/repo.go
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@ -40,7 +40,7 @@ const (
_TPL_UPDATE_HOOK = "#!/usr/bin/env %s\n%s update $1 $2 $3 --config='%s'\n"
)
var repoWorkingPool = sync.NewSingleInstancePool()
var repoWorkingPool = sync.NewExclusivePool()
var (
ErrRepoFileNotExist = errors.New("Repository file does not exist")

2
models/wiki.go
View File

@ -21,7 +21,7 @@ import (
"github.com/gogits/gogs/modules/sync"
)
var wikiWorkingPool = sync.NewSingleInstancePool()
var wikiWorkingPool = sync.NewExclusivePool()
// ToWikiPageURL formats a string to corresponding wiki URL name.
func ToWikiPageURL(name string) string {

19
modules/sync/single_instance_pool.go → modules/sync/exclusive_pool.go
View File

@ -8,14 +8,15 @@ import (
"sync"
)
// SingleInstancePool is a pool of non-identical instances
// ExclusivePool is a pool of non-identical instances
// that only one instance with same identity is in the pool at a time.
// In other words, only instances with different identities can exist
// at the same time.
// In other words, only instances with different identities can be in
// the pool the same time. If another instance with same identity tries
// to get into the pool, it hangs until previous instance left the pool.
//
// This pool is particularly useful for performing tasks on same resource
// on the file system in different goroutines.
type SingleInstancePool struct {
type ExclusivePool struct {
lock sync.Mutex
// pool maintains locks for each instance in the pool.
@ -29,9 +30,9 @@ type SingleInstancePool struct {
count map[string]int
}
// NewSingleInstancePool initializes and returns a new SingleInstancePool object.
func NewSingleInstancePool() *SingleInstancePool {
return &SingleInstancePool{
// NewExclusivePool initializes and returns a new ExclusivePool object.
func NewExclusivePool() *ExclusivePool {
return &ExclusivePool{
pool: make(map[string]*sync.Mutex),
count: make(map[string]int),
}
@ -39,7 +40,7 @@ func NewSingleInstancePool() *SingleInstancePool {
// CheckIn checks in an instance to the pool and hangs while instance
// with same indentity is using the lock.
func (p *SingleInstancePool) CheckIn(identity string) {
func (p *ExclusivePool) CheckIn(identity string) {
p.lock.Lock()
lock, has := p.pool[identity]
@ -55,7 +56,7 @@ func (p *SingleInstancePool) CheckIn(identity string) {
// CheckOut checks out an instance from the pool and releases the lock
// to let other instances with same identity to grab the lock.
func (p *SingleInstancePool) CheckOut(identity string) {
func (p *ExclusivePool) CheckOut(identity string) {
p.lock.Lock()
defer p.lock.Unlock()