Merge branch 'nmathewson-optional_timeout_ptr'

timeout.c

@@ -43,6 +43,11 @@
 #include "debug.h"
 #endif
 
+#ifdef TIMEOUT_DISABLE_RELATIVE_ACCESS
+#define TO_SET_TIMEOUTS(to, T) ((void)0)
+#else
+#define TO_SET_TIMEOUTS(to, T) ((to)->timeouts = (T))
+#endif
 
 /*
  * A N C I L L A R Y  R O U T I N E S
@@ -260,7 +265,7 @@ static void timeouts_reset(struct timeouts *T) {
 	TAILQ_CONCAT(&reset, &T->expired, tqe);
 
 	TAILQ_FOREACH(to, &reset, tqe) {
-		to->timeouts = NULL;
+		TO_SET_TIMEOUTS(to, NULL);
 		to->pending = NULL;
 	}
 } /* timeouts_reset() */
@@ -295,7 +300,7 @@ TIMEOUT_PUBLIC void timeouts_del(struct timeouts *T, struct timeout *to) {
 		}
 
 		to->pending = NULL;
-		to->timeouts = NULL;
+		TO_SET_TIMEOUTS(to, NULL);
 	}
 } /* timeouts_del() */
 
@@ -324,7 +329,7 @@ static void timeouts_sched(struct timeouts *T, struct timeout *to, timeout_t exp
 
 	to->expires = expires;
 
-	to->timeouts = T;
+	TO_SET_TIMEOUTS(to, T);
 
 	if (expires > T->curtime) {
 		rem = timeout_rem(T, to);
@@ -547,7 +552,7 @@ TIMEOUT_PUBLIC struct timeout *timeouts_get(struct timeouts *T) {
 		if ((to->flags & TIMEOUT_INT) && to->interval > 0) {
 			timeouts_readd(T, to);
 		} else {
-			to->timeouts = 0;
+			TO_SET_TIMEOUTS(to, NULL);
 		}
 
 		return to;
@@ -686,6 +691,7 @@ TIMEOUT_PUBLIC struct timeout *timeout_init(struct timeout *to, int flags) {
 } /* timeout_init() */
 
 
+#ifndef TIMEOUT_DISABLE_RELATIVE_ACCESS
 TIMEOUT_PUBLIC bool timeout_pending(struct timeout *to) {
 	return to->pending && to->pending != &to->timeouts->expired;
 } /* timeout_pending() */
@@ -699,6 +705,7 @@ TIMEOUT_PUBLIC bool timeout_expired(struct timeout *to) {
 TIMEOUT_PUBLIC void timeout_del(struct timeout *to) {
 	timeouts_del(to->timeouts, to);
 } /* timeout_del() */
+#endif
 
 
 /*

timeout.h

@@ -119,8 +119,10 @@ struct timeout {
 	timeout_t expires;
 	/* absolute expiration time */
 
+#ifndef TIMEOUT_DISABLE_RELATIVE_ACCESS
 	struct timeouts *timeouts;
 	/* timeouts collection if member of */
+#endif
 
 	struct timeout_list *pending;
 	/* timeout list if pending on wheel or expiry queue */
@@ -136,6 +138,7 @@ struct timeout {
 TIMEOUT_PUBLIC struct timeout *timeout_init(struct timeout *, int);
 /* initialize timeout structure (same as TIMEOUT_INITIALIZER) */
 
+#ifndef TIMEOUT_DISABLE_RELATIVE_ACCESS
 TIMEOUT_PUBLIC bool timeout_pending(struct timeout *);
 /* true if on timing wheel, false otherwise */
  
@@ -144,7 +147,7 @@ TIMEOUT_PUBLIC bool timeout_expired(struct timeout *);
 
 TIMEOUT_PUBLIC void timeout_del(struct timeout *);
 /* remove timeout from any timing wheel (okay if not member of any) */
-
+#endif
 
 /*
  * T I M I N G  W H E E L  I N T E R F A C E S