include/linux/delayed_call.h

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