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33 lines
809 B
Go
33 lines
809 B
Go
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package events
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import (
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"sync/atomic"
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)
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// LogicalClock is a monotonic logical clock that provides a total order
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// for events within a process. It is safe for concurrent use.
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type LogicalClock struct {
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value atomic.Uint64
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}
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// NewLogicalClock creates a new LogicalClock starting at 0.
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func NewLogicalClock() *LogicalClock {
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return &LogicalClock{}
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}
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// Tick atomically increments the clock and returns the new value.
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func (c *LogicalClock) Tick() uint64 {
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return c.value.Add(1)
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}
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// Now returns the current clock value without incrementing.
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func (c *LogicalClock) Now() uint64 {
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return c.value.Load()
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}
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// Reset resets the clock to zero. Use with caution — this should only
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// be done when starting a completely independent execution context.
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func (c *LogicalClock) Reset() {
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c.value.Store(0)
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}
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