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https://github.com/fnproject/fn.git
synced 2022-10-28 21:29:17 +03:00
b9ff601098
another bone head fail here. hopefully can leave this alone meow... newID does not get inlined, but doesn't allocate to trigger any stack expansion either. net perf hit on my laptop is 5ns, and we get a test out of it. it will push a new stack, so it's not negligible overhead and we could avoid it. we could keep the logic in both places just to have a test for it separate instead of re-using the function in the hot path. up to us.
64 lines
1.1 KiB
Go
64 lines
1.1 KiB
Go
package id
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import (
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"encoding/binary"
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"fmt"
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"math"
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"net"
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"testing"
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"time"
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)
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func BenchmarkGen(b *testing.B) {
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for i := 0; i < b.N; i++ {
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id := New()
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_ = id
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}
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}
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func BenchmarkMarshalText(b *testing.B) {
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id := New()
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for i := 0; i < b.N; i++ {
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byts, _ := id.MarshalText()
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_ = byts
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}
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}
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func BenchmarkUnmarshalText(b *testing.B) {
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id := New()
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byts, _ := id.MarshalText()
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for i := 0; i < b.N; i++ {
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var id Id
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id.UnmarshalText(byts)
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_ = id
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}
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}
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func TestIdRaw(t *testing.T) {
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SetMachineIdHost(net.IP{127, 0, 0, 1}, 8080)
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ts := time.Now()
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ms := uint64(ts.Unix())*1000 + uint64(ts.Nanosecond()/int(time.Millisecond))
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count := uint32(math.MaxUint32)
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id := newID(ms, machineID, count)
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fmt.Println(len(id), id)
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var buf [8]byte
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copy(buf[2:], id[:6])
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idTime := binary.BigEndian.Uint64(buf[:])
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if ms != idTime {
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t.Fatal("id time doesn't not match time given", ms, idTime)
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}
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copy(buf[2:], id[6:12])
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idMid := binary.BigEndian.Uint64(buf[:])
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if idMid != machineID {
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t.Fatal("machine id mismatch", idMid, machineID)
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}
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idCount := binary.BigEndian.Uint32(id[12:16])
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if idCount != count {
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t.Fatal("count mismatch", idCount, count)
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}
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}
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