mirror of
https://github.com/golang/go
synced 2024-11-26 17:26:56 -07:00
0efbd10157
Use the following (suboptimal) script to obtain a list of possible
typos:
#!/usr/bin/env sh
set -x
git ls-files |\
grep -e '\.\(c\|cc\|go\)$' |\
xargs -n 1\
awk\
'/\/\// { gsub(/.*\/\//, ""); print; } /\/\*/, /\*\// { gsub(/.*\/\*/, ""); gsub(/\*\/.*/, ""); }' |\
hunspell -d en_US -l |\
grep '^[[:upper:]]\{0,1\}[[:lower:]]\{1,\}$' |\
grep -v -e '^.\{1,4\}$' -e '^.\{16,\}$' |\
sort -f |\
uniq -c |\
awk '$1 == 1 { print $2; }'
Then, go through the results manually and fix the most obvious typos in
the non-vendored code.
Change-Id: I3cb5830a176850e1a0584b8a40b47bde7b260eae
Reviewed-on: https://go-review.googlesource.com/c/go/+/193848
Reviewed-by: Robert Griesemer <gri@golang.org>
75 lines
2.0 KiB
Go
75 lines
2.0 KiB
Go
// run
|
|
|
|
// Copyright 2015 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.
|
|
|
|
// Test that tiny allocations with finalizers are correctly profiled.
|
|
// Previously profile special records could have been processed prematurely
|
|
// (while the object is still live).
|
|
|
|
package main
|
|
|
|
import (
|
|
"runtime"
|
|
"time"
|
|
"unsafe"
|
|
)
|
|
|
|
func main() {
|
|
runtime.MemProfileRate = 1
|
|
// Allocate 1M 4-byte objects and set a finalizer for every third object.
|
|
// Assuming that tiny block size is 16, some objects get finalizers setup
|
|
// only for middle bytes. The finalizer resurrects that object.
|
|
// As the result, all allocated memory must stay alive.
|
|
const (
|
|
N = 1 << 20
|
|
tinyBlockSize = 16 // runtime._TinySize
|
|
)
|
|
hold := make([]*int32, 0, N)
|
|
for i := 0; i < N; i++ {
|
|
x := new(int32)
|
|
if i%3 == 0 {
|
|
runtime.SetFinalizer(x, func(p *int32) {
|
|
hold = append(hold, p)
|
|
})
|
|
}
|
|
}
|
|
// Finalize as much as possible.
|
|
// Note: the sleep only increases probability of bug detection,
|
|
// it cannot lead to false failure.
|
|
for i := 0; i < 5; i++ {
|
|
runtime.GC()
|
|
time.Sleep(10 * time.Millisecond)
|
|
}
|
|
// Read memory profile.
|
|
var prof []runtime.MemProfileRecord
|
|
for {
|
|
if n, ok := runtime.MemProfile(prof, false); ok {
|
|
prof = prof[:n]
|
|
break
|
|
} else {
|
|
prof = make([]runtime.MemProfileRecord, n+10)
|
|
}
|
|
}
|
|
// See how much memory in tiny objects is profiled.
|
|
var totalBytes int64
|
|
for _, p := range prof {
|
|
bytes := p.AllocBytes - p.FreeBytes
|
|
nobj := p.AllocObjects - p.FreeObjects
|
|
size := bytes / nobj
|
|
if size == tinyBlockSize {
|
|
totalBytes += bytes
|
|
}
|
|
}
|
|
// 2*tinyBlockSize slack is for any boundary effects.
|
|
if want := N*int64(unsafe.Sizeof(int32(0))) - 2*tinyBlockSize; totalBytes < want {
|
|
println("got", totalBytes, "want >=", want)
|
|
panic("some of the tiny objects are not profiled")
|
|
}
|
|
// Just to keep hold alive.
|
|
if len(hold) != 0 && hold[0] == nil {
|
|
panic("bad")
|
|
}
|
|
}
|