async resolvers: further cleanups

asyn-ares.c and asyn-thread.c are two separate backends that implement
the same (internal) async resolver API for libcurl to use. Backend is
specified at build time.

The internal resolver API is defined in asyn.h for asynch resolvers.

1 files changed, 0 insertions, 102 deletions

diff --git a/lib/hostsyn.c b/lib/hostsyn.c
index 01d028979..a5e97658e 100644
--- a/lib/hostsyn.c
+++ b/lib/hostsyn.c
@@ -72,107 +72,5 @@
  **********************************************************************/
 #ifdef CURLRES_SYNCH
 
-/*
- * Curl_resolver_global_init()
- * Called from curl_global_init() to initialize global resolver environment.
- * Does nothing here.
- */
-int Curl_resolver_global_init(void)
-{
-  return CURLE_OK;
-}
-
-/*
- * Curl_resolver_global_cleanup()
- * Called from curl_global_cleanup() to destroy global resolver environment.
- * Does nothing here.
- */
-void Curl_resolver_global_cleanup(void)
-{
-}
-
-/*
- * Curl_resolver_init()
- * Called from curl_easy_init() -> Curl_open() to initialize resolver
- * URL-state specific environment ('resolver' member of the UrlState
- * structure).  Does nothing here.
- */
-int Curl_resolver_init(void **resolver)
-{
-  (void)resolver;
-  return CURLE_OK;
-}
-
-/*
- * Curl_resolver_cleanup()
- * Called from curl_easy_cleanup() -> Curl_close() to cleanup resolver
- * URL-state specific environment ('resolver' member of the UrlState
- * structure).  Does nothing here.
- */
-void Curl_resolver_cleanup(void *resolver)
-{
-  (void)resolver;
-}
-
-/*
- * Curl_resolver_duphandle()
- * Called from curl_easy_duphandle() to duplicate resolver URL state-specific
- * environment ('resolver' member of the UrlState structure).  Does nothing
- * here.
- */
-int Curl_resolver_duphandle(void **to, void *from)
-{
-  (void)to;
-  (void)from;
-  return CURLE_OK;
-}
-
-/*
- * Curl_wait_for_resolv() for synch-builds.  Curl_resolv() can never return
- * wait==TRUE, so this function will never be called. If it still gets called,
- * we return failure at once.
- *
- * We provide this function only to allow multi.c to remain unaware if we are
- * doing asynch resolves or not.
- */
-CURLcode Curl_wait_for_resolv(struct connectdata *conn,
-                              struct Curl_dns_entry **entry)
-{
-  (void)conn;
-  *entry=NULL;
-  return CURLE_COULDNT_RESOLVE_HOST;
-}
-
-/*
- * This function will never be called when synch-built. If it still gets
- * called, we return failure at once.
- *
- * We provide this function only to allow multi.c to remain unaware if we are
- * doing asynch resolves or not.
- */
-CURLcode Curl_is_resolved(struct connectdata *conn,
-                          struct Curl_dns_entry **dns)
-{
-  (void)conn;
-  *dns = NULL;
-
-  return CURLE_COULDNT_RESOLVE_HOST;
-}
-
-/*
- * We just return OK, this function is never actually used for synch builds.
- * It is present here to keep #ifdefs out from multi.c
- */
-
-int Curl_resolv_getsock(struct connectdata *conn,
-                        curl_socket_t *sock,
-                        int numsocks)
-{
-  (void)conn;
-  (void)sock;
-  (void)numsocks;
-
-  return 0; /* no bits since we don't use any socks */
-}
 
 #endif /* truly sync */