Zig 0.17.0-dev (Split by item)

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tryLockStderr

Threaded.tryLockStderr

fn tryLockStderr(userdata: ?*anyopaque, terminal_mode: ?Io.Terminal.Mode) Io.Cancelable!?Io.LockedStderr

File

lib/std/Io/Threaded.zig:14000

Code

fn tryLockStderr(userdata: ?*anyopaque, terminal_mode: ?Io.Terminal.Mode) Io.Cancelable!?Io.LockedStderr {
    const t: *Threaded = @ptrCast(@alignCast(userdata));
    const current_thread_id = Thread.currentId();

    if (@atomicLoad(std.Thread.Id, &t.stderr_mutex_locker, .unordered) != current_thread_id) {
        if (!t.stderr_mutex.tryLock()) return null;
        assert(t.stderr_mutex_lock_count == 0);
        @atomicStore(std.Thread.Id, &t.stderr_mutex_locker, current_thread_id, .unordered);
    }
    t.stderr_mutex_lock_count += 1;

    return try initLockedStderr(t, terminal_mode);
}