prometheus/promql/bench.go
beorn7 71571a8ec4 promql: Fix (and simplify) populating iterators
This was only relevant so far for the benchmark suite as it would
recycle Expr for repetitions. However, the append is unnecessary as
each node is only inspected once when populating iterators, and
population must always start from scratch.

This also introduces error checking during benchmarks and fixes the so
far undetected test errors during benchmarking.

Also, remove a style nit (two golint warnings less…).
2016-08-24 18:37:09 +02:00

48 lines
1.2 KiB
Go

// Copyright 2015 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, softwar
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package promql
import "testing"
// A Benchmark holds context for running a unit test as a benchmark.
type Benchmark struct {
b *testing.B
t *Test
iterCount int
}
// NewBenchmark returns an initialized empty Benchmark.
func NewBenchmark(b *testing.B, input string) *Benchmark {
t, err := NewTest(b, input)
if err != nil {
b.Fatalf("Unable to run benchmark: %s", err)
}
return &Benchmark{
b: b,
t: t,
}
}
// Run runs the benchmark.
func (b *Benchmark) Run() {
b.b.ReportAllocs()
b.b.ResetTimer()
for i := 0; i < b.b.N; i++ {
if err := b.t.RunAsBenchmark(b); err != nil {
b.b.Error(err)
}
b.iterCount++
}
}