mirror of
https://github.com/go-sylixos/elvish.git
synced 2024-12-14 02:57:52 +08:00
33a04f8dc1
Instead of putting all possible flags in prog.Flags, flags are now registered by the individual subprograms. The 3 flags -sock, -db and -json are shared by multiple subprograms and still handled by the prog package. This new design allows separating the support for -cpuprofile into a separate subprogram, which is no longer included by the default entry point, making the binary slightly smaller. A new entrypoint "withpprof" is created. Also include the LSP subprogram in the nodaemon entry point.
34 lines
742 B
Go
34 lines
742 B
Go
// Package pprof adds profiling support to the Elvish program.
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package pprof
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import (
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"fmt"
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"os"
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"runtime/pprof"
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"src.elv.sh/pkg/prog"
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)
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// Program adds support for the -cpuprofile flag.
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type Program struct {
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cpuProfile string
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}
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func (p *Program) RegisterFlags(f *prog.FlagSet) {
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f.StringVar(&p.cpuProfile, "cpuprofile", "", "write CPU profile to file")
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}
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func (p *Program) Run(fds [3]*os.File, _ []string) error {
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if p.cpuProfile != "" {
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f, err := os.Create(p.cpuProfile)
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if err != nil {
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fmt.Fprintln(fds[2], "Warning: cannot create CPU profile:", err)
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fmt.Fprintln(fds[2], "Continuing without CPU profiling.")
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} else {
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pprof.StartCPUProfile(f)
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defer pprof.StopCPUProfile()
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}
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}
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return prog.ErrNextProgram
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}
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