Pass a (dummy) handler argument into waiter-instantiation

bin/varnishd/cache/cache_main.c

@@ -211,7 +211,7 @@ child_main(void)
 
 	Lck_New(&vxid_lock, lck_vxid);
 
-	WAIT_Init();
+	WAIT_Init(NULL);
 	PAN_Init();
 	CLI_Init();
 	VFP_Init();

bin/varnishd/waiter/cache_waiter.c

@@ -51,14 +51,14 @@ WAIT_GetName(void)
 }
 
 void
-WAIT_Init(void)
+WAIT_Init(waiter_handle_f *func)
 {
 
 	AN(waiter);
 	AN(waiter->name);
 	AN(waiter->init);
 	AN(waiter->pass);
-	waiter_priv = waiter->init();
+	waiter_priv = waiter->init(func);
 }
 
 int

bin/varnishd/waiter/cache_waiter_epoll.c

@@ -232,10 +232,11 @@ vwe_pass(void *priv, struct sess *sp)
 /*--------------------------------------------------------------------*/
 
 static void *
-vwe_init(void)
+vwe_init(waiter_handle_f *func)
 {
 	struct vwe *vwe;
 
+	(void)func;
 	ALLOC_OBJ(vwe, VWE_MAGIC);
 	AN(vwe);
 	VTAILQ_INIT(&vwe->sesshead);

bin/varnishd/waiter/cache_waiter_kqueue.c

@@ -228,10 +228,11 @@ vwk_pass(void *priv, struct sess *sp)
 /*--------------------------------------------------------------------*/
 
 static void *
-vwk_init(void)
+vwk_init(waiter_handle_f *func)
 {
 	struct vwk *vwk;
 
+	(void)func;
 	ALLOC_OBJ(vwk, VWK_MAGIC);
 	AN(vwk);
 

bin/varnishd/waiter/cache_waiter_poll.c

@@ -205,10 +205,11 @@ vwp_poll_pass(void *priv, struct sess *sp)
 /*--------------------------------------------------------------------*/
 
 static void *
-vwp_poll_init(void)
+vwp_poll_init(waiter_handle_f *func)
 {
 	struct vwp *vwp;
 
+	(void)func;
 	ALLOC_OBJ(vwp, VWP_MAGIC);
 	AN(vwp);
 	VTAILQ_INIT(&vwp->sesshead);

bin/varnishd/waiter/cache_waiter_ports.c

@@ -256,10 +256,11 @@ vws_pass(void *priv, struct sess *sp)
 /*--------------------------------------------------------------------*/
 
 static void *
-vws_init(void)
+vws_init(waiter_handle_f *func)
 {
 	struct vws *vws;
 
+	(void)func
 	ALLOC_OBJ(vws, VWS_MAGIC);
 	AN(vws);
 	VTAILQ_INIT(&vws->sesshead);

bin/varnishd/waiter/waiter.h

@@ -30,7 +30,14 @@
 
 struct sess;
 
-typedef void* waiter_init_f(void);
+enum wait_event {
+	WAITER_REMCLOSE,
+	WAITER_TIMEOUT,
+	WAITER_ACTION
+};
+
+typedef void waiter_handle_f(void *ptr, int fd, enum wait_event);
+typedef void* waiter_init_f(waiter_handle_f *);
 typedef int waiter_pass_f(void *priv, struct sess *);
 
 #define WAITER_DEFAULT		"platform dependent"
@@ -43,7 +50,7 @@ struct waiter {
 
 /* cache_waiter.c */
 int WAIT_Enter(struct sess *sp);
-void WAIT_Init(void);
+void WAIT_Init(waiter_handle_f *);
 const char *WAIT_GetName(void);
 int WAIT_Write_Session(struct sess *sp, int fd);