mirror of https://github.com/restic/restic.git
99 lines
2.6 KiB
Go
99 lines
2.6 KiB
Go
//go:build debug || profile
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// +build debug profile
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package main
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import (
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"fmt"
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"net/http"
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_ "net/http/pprof"
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"os"
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"github.com/restic/restic/internal/errors"
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"github.com/restic/restic/internal/repository"
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"github.com/pkg/profile"
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)
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type ProfileOptions struct {
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listen string
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memPath string
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cpuPath string
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tracePath string
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blockPath string
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insecure bool
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}
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var profileOpts ProfileOptions
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var prof interface {
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Stop()
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}
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func init() {
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f := cmdRoot.PersistentFlags()
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f.StringVar(&profileOpts.listen, "listen-profile", "", "listen on this `address:port` for memory profiling")
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f.StringVar(&profileOpts.memPath, "mem-profile", "", "write memory profile to `dir`")
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f.StringVar(&profileOpts.cpuPath, "cpu-profile", "", "write cpu profile to `dir`")
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f.StringVar(&profileOpts.tracePath, "trace-profile", "", "write trace to `dir`")
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f.StringVar(&profileOpts.blockPath, "block-profile", "", "write block profile to `dir`")
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f.BoolVar(&profileOpts.insecure, "insecure-kdf", false, "use insecure KDF settings")
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}
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type fakeTestingTB struct{}
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func (fakeTestingTB) Logf(msg string, args ...interface{}) {
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fmt.Fprintf(os.Stderr, msg, args...)
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}
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func runDebug() error {
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if profileOpts.listen != "" {
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fmt.Fprintf(os.Stderr, "running profile HTTP server on %v\n", profileOpts.listen)
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go func() {
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err := http.ListenAndServe(profileOpts.listen, nil)
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if err != nil {
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fmt.Fprintf(os.Stderr, "profile HTTP server listen failed: %v\n", err)
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}
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}()
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}
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profilesEnabled := 0
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if profileOpts.memPath != "" {
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profilesEnabled++
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}
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if profileOpts.cpuPath != "" {
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profilesEnabled++
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}
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if profileOpts.tracePath != "" {
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profilesEnabled++
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}
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if profileOpts.blockPath != "" {
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profilesEnabled++
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}
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if profilesEnabled > 1 {
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return errors.Fatal("only one profile (memory, CPU, trace, or block) may be activated at the same time")
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}
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if profileOpts.memPath != "" {
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prof = profile.Start(profile.Quiet, profile.NoShutdownHook, profile.MemProfile, profile.ProfilePath(profileOpts.memPath))
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} else if profileOpts.cpuPath != "" {
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prof = profile.Start(profile.Quiet, profile.NoShutdownHook, profile.CPUProfile, profile.ProfilePath(profileOpts.cpuPath))
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} else if profileOpts.tracePath != "" {
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prof = profile.Start(profile.Quiet, profile.NoShutdownHook, profile.TraceProfile, profile.ProfilePath(profileOpts.tracePath))
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} else if profileOpts.blockPath != "" {
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prof = profile.Start(profile.Quiet, profile.NoShutdownHook, profile.BlockProfile, profile.ProfilePath(profileOpts.blockPath))
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}
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if profileOpts.insecure {
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repository.TestUseLowSecurityKDFParameters(fakeTestingTB{})
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}
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return nil
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}
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func stopDebug() {
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if prof != nil {
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prof.Stop()
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}
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}
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