X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fexit%2Fatexit.c;h=cd3b0a648399f57f820abde2fecfdfece7a020e4;hb=2fae10f887b48b809bac56e4ff8a5c3fd4525de3;hp=89ff4ff35a30e41b84b0559ef964aa072e23e36c;hpb=571744447c23f91feb6439948f3a619aca850dfb;p=musl

diff --git a/src/exit/atexit.c b/src/exit/atexit.c
index 89ff4ff3..cd3b0a64 100644
--- a/src/exit/atexit.c
+++ b/src/exit/atexit.c
@@ -12,18 +12,16 @@ static struct fl
 	void *a[COUNT];
 } builtin, *head;
 
-static int lock[2];
+static int slot;
+static volatile int lock[1];
 
 void __funcs_on_exit()
 {
-	int i;
 	void (*func)(void *), *arg;
 	LOCK(lock);
-	for (; head; head=head->next) for (i=COUNT-1; i>=0; i--) {
-		if (!head->f[i]) continue;
-		func = head->f[i];
-		arg = head->a[i];
-		head->f[i] = 0;
+	for (; head; head=head->next, slot=COUNT) while(slot-->0) {
+		func = head->f[slot];
+		arg = head->a[slot];
 		UNLOCK(lock);
 		func(arg);
 		LOCK(lock);
@@ -36,15 +34,13 @@ void __cxa_finalize(void *dso)
 
 int __cxa_atexit(void (*func)(void *), void *arg, void *dso)
 {
-	int i;
-
 	LOCK(lock);
 
 	/* Defer initialization of head so it can be in BSS */
 	if (!head) head = &builtin;
 
 	/* If the current function list is full, add a new one */
-	if (head->f[COUNT-1]) {
+	if (slot==COUNT) {
 		struct fl *new_fl = calloc(sizeof(struct fl), 1);
 		if (!new_fl) {
 			UNLOCK(lock);
@@ -52,12 +48,13 @@ int __cxa_atexit(void (*func)(void *), void *arg, void *dso)
 		}
 		new_fl->next = head;
 		head = new_fl;
+		slot = 0;
 	}
 
 	/* Append function to the list. */
-	for (i=0; i<COUNT && head->f[i]; i++);
-	head->f[i] = func;
-	head->a[i] = arg;
+	head->f[slot] = func;
+	head->a[slot] = arg;
+	slot++;
 
 	UNLOCK(lock);
 	return 0;