65 lines
1.9 KiB
Go
65 lines
1.9 KiB
Go
|
// Copyright 2016 Google Inc. All Rights Reserved.
|
||
|
|
//
|
||
|
|
// 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, software
|
||
|
|
// 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 profile
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"strconv"
|
||
|
|
"strings"
|
||
|
|
)
|
||
|
|
|
||
|
|
// SampleIndexByName returns the appropriate index for a value of sample index.
|
||
|
|
// If numeric, it returns the number, otherwise it looks up the text in the
|
||
|
|
// profile sample types.
|
||
|
|
func (p *Profile) SampleIndexByName(sampleIndex string) (int, error) {
|
||
|
|
if sampleIndex == "" {
|
||
|
|
if dst := p.DefaultSampleType; dst != "" {
|
||
|
|
for i, t := range sampleTypes(p) {
|
||
|
|
if t == dst {
|
||
|
|
return i, nil
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// By default select the last sample value
|
||
|
|
return len(p.SampleType) - 1, nil
|
||
|
|
}
|
||
|
|
if i, err := strconv.Atoi(sampleIndex); err == nil {
|
||
|
|
if i < 0 || i >= len(p.SampleType) {
|
||
|
|
return 0, fmt.Errorf("sample_index %s is outside the range [0..%d]", sampleIndex, len(p.SampleType)-1)
|
||
|
|
}
|
||
|
|
return i, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// Remove the inuse_ prefix to support legacy pprof options
|
||
|
|
// "inuse_space" and "inuse_objects" for profiles containing types
|
||
|
|
// "space" and "objects".
|
||
|
|
noInuse := strings.TrimPrefix(sampleIndex, "inuse_")
|
||
|
|
for i, t := range p.SampleType {
|
||
|
|
if t.Type == sampleIndex || t.Type == noInuse {
|
||
|
|
return i, nil
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0, fmt.Errorf("sample_index %q must be one of: %v", sampleIndex, sampleTypes(p))
|
||
|
|
}
|
||
|
|
|
||
|
|
func sampleTypes(p *Profile) []string {
|
||
|
|
types := make([]string, len(p.SampleType))
|
||
|
|
for i, t := range p.SampleType {
|
||
|
|
types[i] = t.Type
|
||
|
|
}
|
||
|
|
return types
|
||
|
|
}
|