/*
goredo -- djb's redo implementation on pure Go
-Copyright (C) 2020-2022 Sergey Matveev <stargrave@stargrave.org>
+Copyright (C) 2020-2023 Sergey Matveev <stargrave@stargrave.org>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
return err
}
-func runScript(tgtOrig string, errs chan error, traced bool) error {
+func runScript(tgtOrig string, errs chan error, forced, traced bool) error {
cwd, tgt := cwdAndTgt(tgtOrig)
redoDir := path.Join(cwd, RedoDir)
if err := mkdirs(redoDir); err != nil {
tracef(CLock, "LOCK_EX: %s", fdLock.Name())
LockAgain:
if err := unix.FcntlFlock(fdLock.Fd(), unix.F_SETLKW, &flock); err != nil {
- log.Println(err, fdLock.Name())
- time.Sleep(10 * time.Millisecond)
- goto LockAgain
+ if errors.Is(err, unix.EDEADLK) {
+ time.Sleep(10 * time.Millisecond)
+ goto LockAgain
+ }
+ log.Fatalln(err, fdLock.Name())
}
lockRelease()
tracef(CDebug, "waiting done: %s", tgtOrig)
return nil
}
+ // Check if it was already built in parallel
+ if !forced {
+ if fdDep, err := os.Open(path.Join(redoDir, tgt+DepSuffix)); err == nil {
+ depInfo, err := depRead(fdDep)
+ fdDep.Close()
+ if err == nil && depInfo.build == BuildUUID {
+ lockRelease()
+ errs <- nil
+ return nil
+ }
+ }
+ }
+
// Check if target is not modified externally
modified, inodePrev, hshPrev, err := isModified(cwd, redoDir, tgt)
if err != nil {