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Use int32 instead of string for ip set 

Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
This commit is contained in:
Guillaume J. Charmes 2014-01-22 17:20:19 -08:00
parent 18df387bf8
commit 3e3abdd770
No known key found for this signature in database
GPG Key ID: B33E4642CB6E3FF3
1 changed files with 10 additions and 9 deletions
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19
networkdriver/portallocator/ipset.go
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@ -1,17 +1,18 @@
package ipallocator package ipallocator
import ( import (
"sort"
"sync" "sync"
) )
// iPSet is a thread-safe sorted set and a stack. // iPSet is a thread-safe sorted set and a stack.
type iPSet struct { type iPSet struct {
sync.RWMutex sync.RWMutex
set []string set []int32
} }
// Push takes a string and adds it to the set. If the elem aready exists, it has no effect. // Push takes a string and adds it to the set. If the elem aready exists, it has no effect.
func (s *iPSet) Push(elem string) { func (s *iPSet) Push(elem int32) {
s.RLock() s.RLock()
for i, e := range s.set { for i, e := range s.set {
if e == elem { if e == elem {
@ -24,18 +25,18 @@ func (s *iPSet) Push(elem string) {
s.Lock() s.Lock()
s.set = append(s.set, elem) s.set = append(s.set, elem)
// Make sure the list is always sorted // Make sure the list is always sorted
sort.Strings(s.set) sort.Ints(s.set)
s.Unlock() s.Unlock()
} }
// Pop is an alias to PopFront() // Pop is an alias to PopFront()
func (s *iPSet) Pop() string { func (s *iPSet) Pop() int32 {
return s.PopFront() return s.PopFront()
} }
// Pop returns the first elemen from the list and removes it. // Pop returns the first elemen from the list and removes it.
// If the list is empty, it returns an empty string // If the list is empty, it returns 0
func (s *iPSet) PopFront() string { func (s *iPSet) PopFront() int32 {
s.RLock() s.RLock()
for i, e := range s.set { for i, e := range s.set {
@ -53,7 +54,7 @@ func (s *iPSet) PopFront() string {
// PullBack retrieve the last element of the list. // PullBack retrieve the last element of the list.
// The element is not removed. // The element is not removed.
// If the list is empty, an empty element is returned. // If the list is empty, an empty element is returned.
func (s *iPSet) PullBack() string { func (s *iPSet) PullBack() int32 {
if len(s.set) == 0 { if len(s.set) == 0 {
return "" return ""
} }
@ -61,7 +62,7 @@ func (s *iPSet) PullBack() string {
} }
// Exists checks if the given element present in the list. // Exists checks if the given element present in the list.
func (s *iPSet) Exists(elem string) bool { func (s *iPSet) Exists(elem int32) bool {
for _, e := range s.set { for _, e := range s.set {
if e == elem { if e == elem {
return true return true
@ -72,7 +73,7 @@ func (s *iPSet) Exists(elem string) bool {
// Remove removes an element from the list. // Remove removes an element from the list.
// If the element is not found, it has no effect. // If the element is not found, it has no effect.
func (s *iPSet) Remove(elem string) { func (s *iPSet) Remove(elem int32) {
for i, e := range s.set { for i, e := range s.set {
if e == elem { if e == elem {
s.set = append(s.set[:i], s.set[i+1:]...) s.set = append(s.set[:i], s.set[i+1:]...)