33 lines
627 B
Go
33 lines
627 B
Go
package astits
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import "sync"
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// programMap represents a program ids map
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type programMap struct {
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m *sync.Mutex
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p map[uint16]uint16 // map[ProgramMapID]ProgramNumber
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}
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// newProgramMap creates a new program ids map
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func newProgramMap() programMap {
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return programMap{
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m: &sync.Mutex{},
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p: make(map[uint16]uint16),
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}
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}
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// exists checks whether the program with this pid exists
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func (m programMap) exists(pid uint16) (ok bool) {
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m.m.Lock()
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defer m.m.Unlock()
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_, ok = m.p[pid]
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return
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}
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// set sets a new program id
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func (m programMap) set(pid, number uint16) {
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m.m.Lock()
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defer m.m.Unlock()
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m.p[pid] = number
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}
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