syncthing/lib/sync/debug.go
Jakob Borg 8c91ced784 cmd/syncthing: Clean up deadlock envvars
So STDEADLOCK seems to do the same thing as STDEADLOCKTIMEOUT, except in
the other package. Consolidate?

STDEADLOCKTHRESHOLD is actually called STLOCKTHRESHOLD, correct the help
text.

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4598
2017-12-13 19:40:12 +00:00

41 lines
1.3 KiB
Go

// Copyright (C) 2015 The Syncthing Authors.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at https://mozilla.org/MPL/2.0/.
package sync
import (
"os"
"strconv"
"strings"
"time"
"github.com/sasha-s/go-deadlock"
"github.com/syncthing/syncthing/lib/logger"
)
var (
threshold = 100 * time.Millisecond
l = logger.DefaultLogger.NewFacility("sync", "Mutexes")
// We make an exception in this package and have an actual "if debug { ...
// }" variable, as it may be rather performance critical and does
// nonstandard things (from a debug logging PoV).
debug = strings.Contains(os.Getenv("STTRACE"), "sync") || os.Getenv("STTRACE") == "all"
useDeadlock = os.Getenv("STDEADLOCKTIMEOUT") != ""
)
func init() {
l.SetDebug("sync", strings.Contains(os.Getenv("STTRACE"), "sync") || os.Getenv("STTRACE") == "all")
if n, err := strconv.Atoi(os.Getenv("STLOCKTHRESHOLD")); err == nil {
threshold = time.Duration(n) * time.Millisecond
}
if n, err := strconv.Atoi(os.Getenv("STDEADLOCKTIMEOUT")); err == nil {
deadlock.Opts.DeadlockTimeout = time.Duration(n) * time.Second
}
l.Debugf("Enabling lock logging at %v threshold", threshold)
}