blob: 746f740faed59cb7958f2ff7488ff7e00b3f0db1 [file] [log] [blame]
/*******************************************************************************
* Copyright (c) 2014-2015 IBM Corp.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Allan Stockdill-Mander - initial API and implementation
*******************************************************************************/
package smidge
import (
"sync"
)
type mids struct {
sync.RWMutex
index map[uint16]Token
}
func (m *mids) freeId(id uint16) {
m.Lock()
defer m.Unlock()
delete(m.index, id)
}
func (m *mids) getId(t Token) uint16 {
m.Lock()
defer m.Unlock()
for i := uint16(1); i < uint16(65535); i++ {
if _, ok := m.index[i]; !ok {
m.index[i] = t
return i
}
}
return 0
}
func (m *mids) getToken(id uint16) Token {
m.RLock()
defer m.RUnlock()
if token, ok := m.index[id]; ok {
return token
}
return nil
}