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// Copyright 2021, Chef. All rights reserved.
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// https://github.com/q191201771/naza
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//
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// Use of this source code is governed by a MIT-style license
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// that can be found in the License file.
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//
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// Author: Chef (191201771@qq.com)
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package main
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import (
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"fmt"
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"io/ioutil"
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"strconv"
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"strings"
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"github.com/q191201771/naza/pkg/nazalog"
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)
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// 分析c++程序pstack的两次结果的差异
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type PstackInfo struct {
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tis []ThreadInfo
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tim map[string]ThreadInfo
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}
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type ThreadInfo struct {
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Num int
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P string
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Id int
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RawLine string
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RawStackLines string
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}
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func NewPstackInfo(filename string) PstackInfo {
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var tis []ThreadInfo
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contents, err := ioutil.ReadFile(filename)
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nazalog.Assert(nil, err)
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content := string(contents)
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lines := strings.Split(content, "\n")
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//nazalog.Debugf("len(lines)=%d", len(lines))
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var ti *ThreadInfo
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for _, line := range lines {
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if strings.HasPrefix(line, "Thread") {
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if ti != nil {
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tis = append(tis, *ti)
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}
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ti = &ThreadInfo{}
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//nazalog.Debugf("%s", line)
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ti.RawLine = line
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ti.Num, ti.P, ti.Id, err = parseThreadLine(line)
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nazalog.Assert(nil, err)
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continue
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}
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ti.RawStackLines += line + "\n"
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}
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if ti != nil {
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tis = append(tis, *ti)
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}
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nazalog.Debugf("len(tis)=%d", len(tis))
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tim := make(map[string]ThreadInfo)
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for _, ti := range tis {
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tim[ti.Uk()] = ti
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}
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return PstackInfo{
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tis: tis,
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tim: tim,
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}
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}
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func (pi *PstackInfo) Find(uk string) (ThreadInfo, bool) {
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ti, exist := pi.tim[uk]
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return ti, exist
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}
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func (ti *ThreadInfo) Uk() string {
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return fmt.Sprintf("%s_%d", ti.P, ti.Id)
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}
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func parseThreadLine(line string) (num int, p string, id int, err error) {
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p1 := strings.Index(line, "Thread")
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p2 := strings.Index(line, "(Thread")
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num, err = strconv.Atoi(line[p1+7 : p2-1])
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if err != nil {
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return
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}
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p3 := strings.Index(line, "(LWP")
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p = line[p2+8 : p3-1]
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p4 := strings.Index(line, "))")
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id, err = strconv.Atoi(line[p3+5 : p4-1])
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return
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}
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func main() {
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_ = nazalog.Init(func(option *nazalog.Option) {
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option.LevelFlag = false
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option.ShortFileFlag = false
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option.TimestampFlag = false
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})
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pi1 := NewPstackInfo("old.txt")
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pi2 := NewPstackInfo("new.txt")
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for _, ti2 := range pi2.tis {
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var pre, suf string
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suf = "\033[0m"
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ti1, exist := pi1.Find(ti2.Uk())
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if exist {
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if ti2.RawStackLines == ti1.RawStackLines {
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// 1, 2都有，但是堆栈没变 没色
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pre = ""
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suf = ""
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nazalog.Debugf("%s-------------------------------------------------------------------------%s", pre, suf)
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nazalog.Debugf("%s%s%s", pre, ti2.RawLine, suf)
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nazalog.Debugf("%s%s%s", pre, ti2.RawStackLines, suf)
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} else {
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// 1, 2都有，但是堆栈变化 红色
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// 注意，断站有变化也可能是函数参数变化了
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pre = "\033[22;31m"
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nazalog.Debugf("%s-------------------------------------------------------------------------%s", pre, suf)
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nazalog.Debugf("%s%s%s", pre, ti2.RawLine, suf)
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nazalog.Debugf("%s%s%s", pre, ti2.RawStackLines, suf)
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}
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} else {
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// 只在2有 绿色
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pre = "\033[22;36m"
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nazalog.Debugf("%s-------------------------------------------------------------------------%s", pre, suf)
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nazalog.Debugf("%s%s%s", pre, ti2.RawLine, suf)
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nazalog.Debugf("%s%s%s", pre, ti2.RawStackLines, suf)
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}
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}
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}
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