Rename "struct waiter" to "struct waiter_impl", so we can repurpose

the former for an instance of a waiter.

bin/varnishd/waiter/cache_waiter_epoll.c

@@ -259,7 +259,7 @@ vwe_init(waiter_handle_f *func)
 
 /*--------------------------------------------------------------------*/
 
-const struct waiter waiter_epoll = {
+const struct waiter_impl waiter_epoll = {
 	.name =		"epoll",
 	.init =		vwe_init,
 	.pass =		vwe_pass,

bin/varnishd/waiter/cache_waiter_kqueue.c

@@ -251,7 +251,7 @@ vwk_init(waiter_handle_f *func)
 
 /*--------------------------------------------------------------------*/
 
-const struct waiter waiter_kqueue = {
+const struct waiter_impl waiter_kqueue = {
 	.name =		"kqueue",
 	.init =		vwk_init,
 	.pass =		vwk_pass,

bin/varnishd/waiter/cache_waiter_poll.c

@@ -227,7 +227,7 @@ vwp_poll_init(waiter_handle_f *func)
 
 /*--------------------------------------------------------------------*/
 
-const struct waiter waiter_poll = {
+const struct waiter_impl waiter_poll = {
 	.name =		"poll",
 	.init =		vwp_poll_init,
 	.pass =		vwp_poll_pass,

bin/varnishd/waiter/cache_waiter_ports.c

@@ -272,7 +272,7 @@ vws_init(waiter_handle_f *func)
 
 /*--------------------------------------------------------------------*/
 
-const struct waiter waiter_ports = {
+const struct waiter_impl waiter_ports = {
 	.name =		"ports",
 	.init =		vws_init,
 	.pass =		vws_pass

bin/varnishd/waiter/mgt_waiter.c

@@ -37,7 +37,7 @@
 
 #include "waiter/waiter.h"
 
-static const struct waiter *const vca_waiters[] = {
+static const struct waiter_impl *const waiter_impls[] = {
     #if defined(HAVE_KQUEUE)
 	&waiter_kqueue,
     #endif
@@ -51,7 +51,7 @@ static const struct waiter *const vca_waiters[] = {
 	NULL,
 };
 
-struct waiter const *waiter;
+struct waiter_impl const *waiter;
 
 int
 WAIT_tweak_waiter(struct vsb *vsb, const char *arg)
@@ -67,19 +67,19 @@ WAIT_tweak_waiter(struct vsb *vsb, const char *arg)
 			VSB_printf(vsb, "%s", waiter->name);
 
 		VSB_printf(vsb, " (possible values: ");
-		for (i = 0; vca_waiters[i] != NULL; i++)
+		for (i = 0; waiter_impls[i] != NULL; i++)
 			VSB_printf(vsb, "%s%s", i == 0 ? "" : ", ",
-			    vca_waiters[i]->name);
+			    waiter_impls[i]->name);
 		VSB_printf(vsb, ")");
 		return(0);
 	}
 	if (!strcmp(arg, WAITER_DEFAULT)) {
-		waiter = vca_waiters[0];
+		waiter = waiter_impls[0];
 		return(0);
 	}
-	for (i = 0; vca_waiters[i]; i++) {
-		if (!strcmp(arg, vca_waiters[i]->name)) {
-			waiter = vca_waiters[i];
+	for (i = 0; waiter_impls[i]; i++) {
+		if (!strcmp(arg, waiter_impls[i]->name)) {
+			waiter = waiter_impls[i];
 			return(0);
 		}
 	}

bin/varnishd/waiter/waiter.h

@@ -42,7 +42,7 @@ typedef int waiter_pass_f(void *priv, struct sess *);
 
 #define WAITER_DEFAULT		"platform dependent"
 
-struct waiter {
+struct waiter_impl {
 	const char		*name;
 	waiter_init_f		*init;
 	waiter_pass_f		*pass;
@@ -55,19 +55,19 @@ const char *WAIT_GetName(void);
 int WAIT_Write_Session(struct sess *sp, int fd);
 
 /* mgt_waiter.c */
-extern struct waiter const * waiter;
+extern struct waiter_impl const * waiter;
 int WAIT_tweak_waiter(struct vsb *vsb, const char *arg);
 
 #if defined(HAVE_EPOLL_CTL)
-extern const struct waiter waiter_epoll;
+extern const struct waiter_impl waiter_epoll;
 #endif
 
 #if defined(HAVE_KQUEUE)
-extern const struct waiter waiter_kqueue;
+extern const struct waiter_impl waiter_kqueue;
 #endif
 
 #if defined(HAVE_PORT_CREATE)
-extern const struct waiter waiter_ports;
+extern const struct waiter_impl waiter_ports;
 #endif
 
-extern const struct waiter waiter_poll;
+extern const struct waiter_impl waiter_poll;