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// Copyright 2017 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 tracer
import (
"bufio"
"os"
"sort"
"strconv"
"strings"
)
type eventEntry struct {
Name string
Begin uint64
End uint64
}
func (t *tracerImpl) importEvents(entries []*eventEntry) {
sort.Slice(entries, func(i, j int) bool {
return entries[i].Begin < entries[j].Begin
})
cpus := []uint64{}
for _, entry := range entries {
tid := -1
for cpu, endTime := range cpus {
if endTime <= entry.Begin {
tid = cpu
cpus[cpu] = entry.End
break
}
}
if tid == -1 {
tid = len(cpus)
cpus = append(cpus, entry.End)
}
t.writeEvent(&viewerEvent{
Name: entry.Name,
Phase: "X",
Time: entry.Begin,
Dur: entry.End - entry.Begin,
Pid: 1,
Tid: uint64(tid),
})
}
}
func (t *tracerImpl) ImportMicrofactoryLog(filename string) {
if _, err := os.Stat(filename); err != nil {
return
}
f, err := os.Open(filename)
if err != nil {
t.log.Verboseln("Error opening microfactory trace:", err)
return
}
defer f.Close()
entries := []*eventEntry{}
begin := map[string][]uint64{}
s := bufio.NewScanner(f)
for s.Scan() {
fields := strings.SplitN(s.Text(), " ", 3)
if len(fields) != 3 {
t.log.Verboseln("Unknown line in microfactory trace:", s.Text())
continue
}
timestamp, err := strconv.ParseUint(fields[0], 10, 64)
if err != nil {
t.log.Verboseln("Failed to parse timestamp in microfactory trace:", err)
}
if fields[1] == "B" {
begin[fields[2]] = append(begin[fields[2]], timestamp)
} else if beginTimestamps, ok := begin[fields[2]]; ok {
entries = append(entries, &eventEntry{
Name: fields[2],
Begin: beginTimestamps[len(beginTimestamps)-1],
End: timestamp,
})
begin[fields[2]] = beginTimestamps[:len(beginTimestamps)-1]
}
}
t.importEvents(entries)
}
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