/usr/share/gocode/src/github.com/tendermint/go-autofile/sighup_watcher.go is in golang-github-tendermint-go-autofile-dev 0.0~20170129~0git48b17de-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | package autofile
import (
"os"
"os/signal"
"sync"
"sync/atomic"
"syscall"
)
func init() {
initSighupWatcher()
}
var sighupWatchers *SighupWatcher
var sighupCounter int32 // For testing
func initSighupWatcher() {
sighupWatchers = newSighupWatcher()
c := make(chan os.Signal, 1)
signal.Notify(c, syscall.SIGHUP)
go func() {
for _ = range c {
sighupWatchers.closeAll()
atomic.AddInt32(&sighupCounter, 1)
}
}()
}
// Watchces for SIGHUP events and notifies registered AutoFiles
type SighupWatcher struct {
mtx sync.Mutex
autoFiles map[string]*AutoFile
}
func newSighupWatcher() *SighupWatcher {
return &SighupWatcher{
autoFiles: make(map[string]*AutoFile, 10),
}
}
func (w *SighupWatcher) addAutoFile(af *AutoFile) {
w.mtx.Lock()
w.autoFiles[af.ID] = af
w.mtx.Unlock()
}
// If AutoFile isn't registered or was already removed, does nothing.
func (w *SighupWatcher) removeAutoFile(af *AutoFile) {
w.mtx.Lock()
delete(w.autoFiles, af.ID)
w.mtx.Unlock()
}
func (w *SighupWatcher) closeAll() {
w.mtx.Lock()
for _, af := range w.autoFiles {
af.closeFile()
}
w.mtx.Unlock()
}
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