delayed_call.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _DELAYED_CALL_H
 3#define _DELAYED_CALL_H
 4
 5/*
 6 * Poor man's closures; I wish we could've done them sanely polymorphic,
 7 * but...
 8 */
 9
10struct delayed_call {
11	void (*fn)(void *);
12	void *arg;
13};
14
15#define DEFINE_DELAYED_CALL(name) struct delayed_call name = {NULL, NULL}
16
17/* I really wish we had closures with sane typechecking... */
18static inline void set_delayed_call(struct delayed_call *call,
19		void (*fn)(void *), void *arg)
20{
21	call->fn = fn;
22	call->arg = arg;
23}
24
25static inline void do_delayed_call(struct delayed_call *call)
26{
27	if (call->fn)
28		call->fn(call->arg);
29}
30
31static inline void clear_delayed_call(struct delayed_call *call)
32{
33	call->fn = NULL;
34}
35#endif