os.filelock

fn new(file_name string) FileLock

new creates a sidecar lock file that is removed again when the lock is released.

fn new_file(path string, options LockOptions) FileLock

new_file creates a lock for an existing file path using OS-level file locking.

fn LockMode.from[W](input W) !LockMode

fn LockTarget.from[W](input W) !LockTarget

enum LockMode {
	shared
	exclusive
}

LockMode describes whether an existing file lock is shared/read or exclusive/write.

struct FileLock {
	name   string
	mode   LockMode = .exclusive
	start  u64
	len    u64
	target LockTarget = .sidecar
mut:
	fd i64
}

fn (mut l FileLock) acquire() !

acquire blocks until the lock is acquired.

fn (mut l FileLock) release() bool

release unlocks the file and closes the underlying file descriptor or handle.

fn (mut l FileLock) try_acquire() bool

try_acquire tries to acquire the lock without blocking.

fn (mut l FileLock) wait_acquire(timeout time.Duration) bool

wait_acquire keeps trying to acquire the lock until timeout expires.

struct LockOptions {
pub:
	mode  LockMode = .exclusive
	start u64
	len   u64
}

LockOptions configures how new_file locks an existing file.