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Use single filename for heap profiles

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This commit is contained in:
Jakob Borg 2015-02-10 19:49:49 +01:00
parent c482c13dcb
commit c87a6c5969
1 changed files with 13 additions and 4 deletions
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17
cmd/syncthing/heapprof.go
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@ -40,12 +40,12 @@ func saveHeapProfiles(rate int) {
runtime.MemProfileRate = rate
var memstats, prevMemstats runtime.MemStats
t0 := time.Now()
for t := range time.NewTicker(250 * time.Millisecond).C {
startms := int(t.Sub(t0).Seconds() * 1000)
name := fmt.Sprintf("heap-%05d.pprof", syscall.Getpid())
for {
runtime.ReadMemStats(&memstats)
if memstats.HeapInuse > prevMemstats.HeapInuse {
fd, err := os.Create(fmt.Sprintf("heap-%05d-%07d.pprof", syscall.Getpid(), startms))
fd, err := os.Create(name + ".tmp")
if err != nil {
panic(err)
}
@ -57,7 +57,16 @@ func saveHeapProfiles(rate int) {
if err != nil {
panic(err)
}
_ = os.Remove(name) // Error deliberately ignored
err = os.Rename(name+".tmp", name)
if err != nil {
panic(err)
}
prevMemstats = memstats
}
time.Sleep(250 * time.Millisecond)
}
}