8dc2499aa6
gotools/ * Makefile.am (go_cmd_cgo_files): Add ast_go118.go (check-go-tool): Copy golang.org/x/tools directories. * Makefile.in: Regenerate. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/384695
39 lines
738 B
Go
39 lines
738 B
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build darwin || freebsd || linux || netbsd || openbsd
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package pprof
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import (
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"syscall"
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"time"
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)
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func init() {
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diffCPUTimeImpl = diffCPUTimeRUsage
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}
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func diffCPUTimeRUsage(f func()) time.Duration {
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ok := true
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var before, after syscall.Rusage
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err := syscall.Getrusage(syscall.RUSAGE_SELF, &before)
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if err != nil {
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ok = false
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}
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f()
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err = syscall.Getrusage(syscall.RUSAGE_SELF, &after)
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if err != nil {
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ok = false
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}
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if !ok {
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return 0
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}
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return time.Duration((after.Utime.Nano() + after.Stime.Nano()) - (before.Utime.Nano() + before.Stime.Nano()))
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}
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