some deletions

[dotfiles/.git] / .config / coc / extensions / coc-go-data / tools / pkg / mod / golang.org / x / tools@v0.0.0-20201028153306-37f0764111ff / godoc / util / throttle.go

diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/godoc/util/throttle.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/godoc/util/throttle.go
deleted file mode 100644 (file)
index 53d9ba6..0000000
--- a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/godoc/util/throttle.go
+++ /dev/null
@@ -1,88 +0,0 @@
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package util
-
-import "time"
-
-// A Throttle permits throttling of a goroutine by
-// calling the Throttle method repeatedly.
-//
-type Throttle struct {
-       f  float64       // f = (1-r)/r for 0 < r < 1
-       dt time.Duration // minimum run time slice; >= 0
-       tr time.Duration // accumulated time running
-       ts time.Duration // accumulated time stopped
-       tt time.Time     // earliest throttle time (= time Throttle returned + tm)
-}
-
-// NewThrottle creates a new Throttle with a throttle value r and
-// a minimum allocated run time slice of dt:
-//
-//     r == 0: "empty" throttle; the goroutine is always sleeping
-//     r == 1: full throttle; the goroutine is never sleeping
-//
-// A value of r == 0.6 throttles a goroutine such that it runs
-// approx. 60% of the time, and sleeps approx. 40% of the time.
-// Values of r < 0 or r > 1 are clamped down to values between 0 and 1.
-// Values of dt < 0 are set to 0.
-//
-func NewThrottle(r float64, dt time.Duration) *Throttle {
-       var f float64
-       switch {
-       case r <= 0:
-               f = -1 // indicates always sleep
-       case r >= 1:
-               f = 0 // assume r == 1 (never sleep)
-       default:
-               // 0 < r < 1
-               f = (1 - r) / r
-       }
-       if dt < 0 {
-               dt = 0
-       }
-       return &Throttle{f: f, dt: dt, tt: time.Now().Add(dt)}
-}
-
-// Throttle calls time.Sleep such that over time the ratio tr/ts between
-// accumulated run (tr) and sleep times (ts) approximates the value 1/(1-r)
-// where r is the throttle value. Throttle returns immediately (w/o sleeping)
-// if less than tm ns have passed since the last call to Throttle.
-//
-func (p *Throttle) Throttle() {
-       if p.f < 0 {
-               select {} // always sleep
-       }
-
-       t0 := time.Now()
-       if t0.Before(p.tt) {
-               return // keep running (minimum time slice not exhausted yet)
-       }
-
-       // accumulate running time
-       p.tr += t0.Sub(p.tt) + p.dt
-
-       // compute sleep time
-       // Over time we want:
-       //
-       //      tr/ts = r/(1-r)
-       //
-       // Thus:
-       //
-       //      ts = tr*f with f = (1-r)/r
-       //
-       // After some incremental run time δr added to the total run time
-       // tr, the incremental sleep-time δs to get to the same ratio again
-       // after waking up from time.Sleep is:
-       if δs := time.Duration(float64(p.tr)*p.f) - p.ts; δs > 0 {
-               time.Sleep(δs)
-       }
-
-       // accumulate (actual) sleep time
-       t1 := time.Now()
-       p.ts += t1.Sub(t0)
-
-       // set earliest next throttle time
-       p.tt = t1.Add(p.dt)
-}