grow memory for visits as needed

5 files changed, 20 insertions, 2 deletions

diff --git a/comp.c b/comp.c
index 9427363..7b2c575 100644
--- a/comp.c
+++ b/comp.c
@@ -82,6 +82,8 @@ struct segment next_dart(int rem, int darts_in_hand)
 
 void comp_visit(struct leg *l)
 {
+	if (l->n_visits == l->size_visits)
+		leg_grow_visits(l);
 	struct visit *v = l->visits + l->n_visits++;
 	v->darts = calloc(3, sizeof(*(v->darts)));
 	v->ccoords = calloc(3, sizeof(*(v->ccoords)));
diff --git a/dartbot.c b/dartbot.c
index 03b4ec5..1759846 100644
--- a/dartbot.c
+++ b/dartbot.c
@@ -34,6 +34,8 @@ void test_match(int start_points)
 
 void user_visit(struct leg *l)
 {
+	if (l->n_visits == l->size_visits)
+		leg_grow_visits(l);
 	struct visit *v = l->visits + l->n_visits++;
 
 	char status[100];
diff --git a/match.c b/match.c
index 08c0a3a..6bd1426 100644
--- a/match.c
+++ b/match.c
@@ -1,13 +1,15 @@
 #include "match.h"
 
 #include <stdlib.h>
+#include <string.h>
 
 struct leg *leg_init(int points, char *name)
 {
 	struct leg *l = calloc(1, sizeof(*l));
 	l->name = name;
 	l->start = l->rem = points;
-	l->visits = calloc(1000, sizeof(*(l->visits))); // FIXME
+	l->size_visits = 16;
+	l->visits = calloc(l->size_visits, sizeof(*(l->visits)));
 
 	return l;
 }
@@ -23,3 +25,12 @@ void leg_free(struct leg *l)
 	free(l->visits);
 	free(l);
 }
+
+void leg_grow_visits(struct leg *l)
+{
+
+	size_t bytes = l->size_visits * sizeof(*(l->visits));
+	l->size_visits *= 2;
+	l->visits = realloc(l->visits, 2 * bytes);
+	memset((char *)l->visits + bytes, 0, bytes);
+}
diff --git a/match.h b/match.h
index 9cdb261..ef75bac 100644
--- a/match.h
+++ b/match.h
@@ -15,11 +15,12 @@ struct leg {
 	char *name;
 	int start;
 	int rem;
-	int n_visits;
+	int n_visits, size_visits;
 	struct visit *visits;
 };
 
 struct leg *leg_init(int points, char *name);
 void leg_free(struct leg *l);
+void leg_grow_visits(struct leg *l);
 
 #endif
diff --git a/web/dartboat_wasm.c b/web/dartboat_wasm.c
index e7f0415..691be77 100644
--- a/web/dartboat_wasm.c
+++ b/web/dartboat_wasm.c
@@ -321,6 +321,8 @@ EMSCRIPTEN_KEEPALIVE void user_visit(int points)
 	}
 
 	struct leg *l = state->active_leg;
+	if (l->n_visits == l->size_visits)
+		leg_grow_visits(l);
 	struct visit *v = l->visits + l->n_visits++;
 	v->points = points;
 	l->rem -= points;