Provided argument-list equivalent for several variadic functions

This is necessary for the upcoming HPM hooking system

2 files changed, 19 insertions, 12 deletions

diff --git a/src/common/db.c b/src/common/db.c
index bd2bea424..b3a58e0a4 100644
--- a/src/common/db.c
+++ b/src/common/db.c
@@ -2730,20 +2730,26 @@ void linkdb_insert( struct linkdb_node** head, void *key, void* data)
 	node->data = data;
 }
 
-void linkdb_foreach( struct linkdb_node** head, LinkDBFunc func, ...  )
-{
+void linkdb_vforeach( struct linkdb_node** head, LinkDBFunc func, va_list ap) {
 	struct linkdb_node *node;
 	if( head == NULL ) return;
 	node = *head;
 	while ( node ) {
-		va_list args;
-		va_start(args, func);
-		func( node->key, node->data, args );
-		va_end(args);
+		va_list argscopy;
+		va_copy(argscopy, ap);
+		func(node->key, node->data, argscopy);
+		va_end(argscopy);
 		node = node->next;
 	}
 }
 
+void linkdb_foreach( struct linkdb_node** head, LinkDBFunc func, ...) {
+	va_list ap;
+	va_start(ap, func);
+	linkdb_vforeach(head, func, ap);
+	va_end(ap);
+}
+
 void* linkdb_search( struct linkdb_node** head, void *key)
 {
 	int n = 0;
diff --git a/src/common/db.h b/src/common/db.h
index aa4bfb054..dffd2356d 100644
--- a/src/common/db.h
+++ b/src/common/db.h
@@ -882,12 +882,13 @@ struct linkdb_node {
 
 typedef void (*LinkDBFunc)(void* key, void* data, va_list args);
 
-void  linkdb_insert ( struct linkdb_node** head, void *key, void* data); // 重複を考慮しない
-void  linkdb_replace( struct linkdb_node** head, void *key, void* data); // 重複を考慮する
-void* linkdb_search ( struct linkdb_node** head, void *key);
-void* linkdb_erase  ( struct linkdb_node** head, void *key);
-void  linkdb_final  ( struct linkdb_node** head );
-void  linkdb_foreach( struct linkdb_node** head, LinkDBFunc func, ...  );
+void  linkdb_insert  (struct linkdb_node** head, void *key, void* data); // 重複を考慮しない
+void  linkdb_replace (struct linkdb_node** head, void *key, void* data); // 重複を考慮する
+void* linkdb_search  (struct linkdb_node** head, void *key);
+void* linkdb_erase   (struct linkdb_node** head, void *key);
+void  linkdb_final   (struct linkdb_node** head);
+void  linkdb_vforeach(struct linkdb_node** head, LinkDBFunc func, va_list ap);
+void  linkdb_foreach (struct linkdb_node** head, LinkDBFunc func, ...);