// Mount mounts a fuse fs.FS at a given location, and returns a Mount instance.
// parent is a ContextGroup to bind the mount's ContextGroup to.
func NewMount(p goprocess.Process, fsys fs.FS, mountpoint string, allow_other bool) (Mount, error) {
var conn *fuse.Conn
var err error
if allow_other {
conn, err = fuse.Mount(mountpoint, fuse.AllowOther())
} else {
conn, err = fuse.Mount(mountpoint)
}
if err != nil {
return nil, err
}
m := &mount{
mpoint: mountpoint,
fuseConn: conn,
filesys: fsys,
proc: goprocess.WithParent(p), // link it to parent.
}
m.proc.SetTeardown(m.unmount)
// launch the mounting process.
if err := m.mount(); err != nil {
m.Unmount() // just in case.
return nil, err
}
return m, nil
}
func newNAT(realNAT nat.NAT) *NAT {
return &NAT{
nat: realNAT,
proc: goprocess.WithParent(goprocess.Background()),
mappings: make(map[*mapping]struct{}),
}
}
func newQueryRunner(q *dhtQuery) *dhtQueryRunner {
proc := process.WithParent(process.Background())
ctx := ctxproc.OnClosingContext(proc)
return &dhtQueryRunner{
query: q,
peersToQuery: queue.NewChanQueue(ctx, queue.NewXORDistancePQ(q.key)),
peersRemaining: todoctr.NewSyncCounter(),
peersSeen: pset.New(),
rateLimit: make(chan struct{}, q.concurrency),
proc: proc,
}
}
func newNatManager(host *BasicHost) *natManager {
nmgr := &natManager{
host: host,
ready: make(chan struct{}),
proc: goprocess.WithParent(host.proc),
}
// teardown
nmgr.proc = goprocess.WithTeardown(func() error {
// on closing, unregister from network notifications.
host.Network().StopNotify((*nmgrNetNotifiee)(nmgr))
return nil
})
// host is our parent. close when host closes.
host.proc.AddChild(nmgr.proc)
// discover the nat.
nmgr.discoverNAT()
return nmgr
}
func NewRateLimiter(parent process.Process, limit int) *RateLimiter {
proc := process.WithParent(parent)
return &RateLimiter{Process: proc, limiter: LimitChan(limit)}
}
// WithContext constructs and returns a Process that respects
// given context. It is the equivalent of:
//
// func ProcessWithContext(ctx context.Context) goprocess.Process {
// p := goprocess.WithParent(goprocess.Background())
// CloseAfterContext(p, ctx)
// return p
// }
//
func WithContext(ctx context.Context) goprocess.Process {
p := goprocess.WithParent(goprocess.Background())
CloseAfterContext(p, ctx)
return p
}