File: mainthread.go

package info (click to toggle)
singularity-container 4.0.3%2Bds1-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 21,672 kB
  • sloc: asm: 3,857; sh: 2,125; ansic: 1,677; awk: 414; makefile: 110; python: 99
file content (65 lines) | stat: -rw-r--r-- 1,482 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
// Copyright (c) 2018, Sylabs Inc. All rights reserved.
// This software is licensed under a 3-clause BSD license. Please consult the
// LICENSE.md file distributed with the sources of this project regarding your
// rights to use or distribute this software.

package mainthread

import (
	"os"
	"path/filepath"
	"syscall"
)

// FuncChannel passes functions executed in main thread
var FuncChannel = make(chan func())

// Execute allows to execute a function in the main thread
func Execute(f func()) {
	done := make(chan bool)
	FuncChannel <- func() {
		f()
		done <- true
	}
	<-done
}

// Stat retrieves file stat information from main thread
func Stat(name string) (fi os.FileInfo, err error) {
	Execute(func() {
		fi, err = os.Stat(name)
	})
	return
}

// Readlink returns the destination of link name from main thread
func Readlink(name string) (dest string, err error) {
	Execute(func() {
		dest, err = os.Readlink(name)
	})
	return
}

// EvalSymlinks returns the evaluated path after link resolution from main thread
func EvalSymlinks(path string) (rpath string, err error) {
	Execute(func() {
		rpath, err = filepath.EvalSymlinks(path)
	})
	return
}

// Chdir changes current working directory to the provided directory
func Chdir(dir string) (err error) {
	Execute(func() {
		err = os.Chdir(dir)
	})
	return
}

// Fchdir changes current working directory to the directory pointed
func Fchdir(fd int) (err error) {
	Execute(func() {
		err = syscall.Fchdir(fd)
	})
	return
}