go/src/runtime/tracemap.go

type traceMap …

type traceMapNode …

// stealID steals an ID from the table, ensuring that it will not
// appear in the table anymore.
func (tab *traceMap) stealID() uint64 { … }

// put inserts the data into the table.
//
// It's always safe for callers to noescape data because put copies its bytes.
//
// Returns a unique ID for the data and whether this is the first time
// the data has been added to the map.
func (tab *traceMap) put(data unsafe.Pointer, size uintptr) (uint64, bool) { … }

func (tab *traceMap) newTraceMapNode(data unsafe.Pointer, size, hash uintptr, id uint64) *traceMapNode { … }

// reset drops all allocated memory from the table and resets it.
//
// The caller must ensure that there are no put operations executing concurrently
// with this function.
func (tab *traceMap) reset() { … }