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package utils
import (
"flag"
"fmt"
"io"
"os"
"os/exec"
"path/filepath"
"sync"
"sync/atomic"
)
var _ = fmt.Print
type worker struct {
cmd *exec.Cmd
stdin_pipe io.WriteCloser
}
var worker_started atomic.Bool
// IsTesting returns true if the code is being run by "go test".
func IsTesting() bool {
return flag.Lookup("test.v") != nil
}
var get_worker = sync.OnceValues(func() (*worker, error) {
exe, err := os.Executable()
if err != nil {
return nil, err
}
if IsTesting() {
if exe, err = filepath.Abs("../../kitty/launcher/kitten"); err != nil {
return nil, err
}
}
cmd := exec.Command(exe, "__atexit__")
cmd.Stdout = nil
cmd.Stderr = os.Stderr
ans := worker{cmd: cmd}
si, err := cmd.StdinPipe()
if err != nil {
return nil, err
}
ans.stdin_pipe = si
if err = cmd.Start(); err != nil {
return nil, err
}
worker_started.Store(true)
return &ans, nil
})
func WaitForAtexitWorkerToFinish() error {
if worker_started.Load() {
if w, err := get_worker(); err == nil {
w.stdin_pipe.Close()
return w.cmd.Wait()
} else {
return err
}
}
return nil
}
func register(prefix, path string) error {
// no atexit cleanup is done as we dont have a good place to run
// WaitForAtexitWorkerToFinish() and anyway we may want to run tests in
// parallel, etc.
if IsTesting() {
return nil
}
path, err := filepath.Abs(path)
if err != nil {
return err
}
if w, err := get_worker(); err == nil {
_, err = fmt.Fprintln(w.stdin_pipe, prefix+" "+path)
return err
} else {
return err
}
}
func AtExitUnlink(path string) error {
return register("unlink", path)
}
func AtExitShmUnlink(path string) error {
return register("shm_unlink", path)
}
func AtExitRmtree(path string) error {
return register("rmtree", path)
}
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