67cbcac643
* Fix typos * revert chains/unit_testnet * revert chains * fix review comments (thx @AlexVanin)
73 lines
1.5 KiB
Go
73 lines
1.5 KiB
Go
package core
|
|
|
|
import (
|
|
"sync"
|
|
|
|
"github.com/CityOfZion/neo-go/pkg/util"
|
|
)
|
|
|
|
// Cache is data structure with fixed type key of Uint256, but has a
|
|
// generic value. Used for block, tx and header cache types.
|
|
type Cache struct {
|
|
lock sync.RWMutex
|
|
m map[util.Uint256]interface{}
|
|
}
|
|
|
|
// NewCache returns a ready to use Cache object.
|
|
func NewCache() *Cache {
|
|
return &Cache{
|
|
m: make(map[util.Uint256]interface{}),
|
|
}
|
|
}
|
|
|
|
// GetBlock will return a Block type from the cache.
|
|
func (c *Cache) GetBlock(h util.Uint256) (block *Block, ok bool) {
|
|
c.lock.RLock()
|
|
defer c.lock.RUnlock()
|
|
return c.getBlock(h)
|
|
}
|
|
|
|
func (c *Cache) getBlock(h util.Uint256) (block *Block, ok bool) {
|
|
if v, b := c.m[h]; b {
|
|
block, ok = v.(*Block)
|
|
return
|
|
}
|
|
return
|
|
}
|
|
|
|
// Add adds the given hash along with its value to the cache.
|
|
func (c *Cache) Add(h util.Uint256, v interface{}) {
|
|
c.lock.Lock()
|
|
defer c.lock.Unlock()
|
|
c.add(h, v)
|
|
}
|
|
|
|
func (c *Cache) add(h util.Uint256, v interface{}) {
|
|
c.m[h] = v
|
|
}
|
|
|
|
func (c *Cache) has(h util.Uint256) bool {
|
|
_, ok := c.m[h]
|
|
return ok
|
|
}
|
|
|
|
// Has returns whether the cache contains the given hash.
|
|
func (c *Cache) Has(h util.Uint256) bool {
|
|
c.lock.Lock()
|
|
defer c.lock.Unlock()
|
|
return c.has(h)
|
|
}
|
|
|
|
// Len return the number of items present in the cache.
|
|
func (c *Cache) Len() int {
|
|
c.lock.RLock()
|
|
defer c.lock.RUnlock()
|
|
return len(c.m)
|
|
}
|
|
|
|
// Delete removes the item out of the cache.
|
|
func (c *Cache) Delete(h util.Uint256) {
|
|
c.lock.Lock()
|
|
defer c.lock.Unlock()
|
|
delete(c.m, h)
|
|
}
|