53 lines
998 B
Go
53 lines
998 B
Go
package main
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import "C"
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import (
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"errors"
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"sync"
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)
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type ObjectReference int64
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var NullObjectReference error = errors.New("Null object reference")
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// GoMemoryStore is a int->interface storage structure so that Go pointers are
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// never exposed to C code.
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type GoMemoryStore struct {
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mtx sync.RWMutex
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items map[int64]interface{}
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next int64
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}
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func NewGoMemoryStore() *GoMemoryStore {
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ret := GoMemoryStore{}
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ret.items = make(map[int64]interface{})
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return &ret
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}
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func (this *GoMemoryStore) Put(itm interface{}) ObjectReference {
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this.mtx.Lock()
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defer this.mtx.Unlock()
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key := this.next
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this.items[key] = itm
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this.next++
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return ObjectReference(key)
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}
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func (this *GoMemoryStore) Get(i ObjectReference) (interface{}, bool) {
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this.mtx.RLock()
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defer this.mtx.RUnlock()
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ret, ok := this.items[int64(i)]
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return ret, ok
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}
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func (this *GoMemoryStore) Delete(i ObjectReference) {
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this.mtx.Lock()
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defer this.mtx.Unlock()
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delete(this.items, int64(i))
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}
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var gms = NewGoMemoryStore()
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