X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fpoll.c;h=1fe28f403f1cdb0ee0fd3d197eaeb8860b981c04;hb=dd34699eca563b946f6d9665b1b85fdb57e3bb25;hp=7b1054a9560e337c483e8d62395a110744079ae4;hpb=28de64428cfdb63ad07acfcfc254907b608d5137;p=adns.git

diff --git a/src/poll.c b/src/poll.c
index 7b1054a..1fe28f4 100644
--- a/src/poll.c
+++ b/src/poll.c
@@ -21,6 +21,7 @@
  */
 
 #include <limits.h>
+#include <string.h>
 
 #include "internal.h"
 
@@ -89,4 +90,37 @@ void adns_afterpoll(adns_state ads, const struct pollfd *fds, int nfds,
   adns__consistency(ads,0,cc_entex);
 }
 
+int adns_wait_poll(adns_state ads,
+		   adns_query *query_io,
+		   adns_answer **answer_r,
+		   void **context_r) {
+  int r, nfds, to;
+  struct pollfd fds[MAX_POLLFDS];
+  
+  adns__consistency(ads,0,cc_entex);
+
+  for (;;) {
+    r= adns__internal_check(ads,query_io,answer_r,context_r);
+    if (r != EWOULDBLOCK) goto xit;
+    nfds= MAX_POLLFDS; to= -1;
+    adns_beforepoll(ads,fds,&nfds,&to,0);
+    r= poll(fds,nfds,to);
+    if (r == -1) {
+      if (errno == EINTR) {
+	if (ads->iflags & adns_if_eintr) { r= EINTR; goto xit; }
+      } else {
+	adns__diag(ads,-1,0,"poll failed in wait: %s",strerror(errno));
+	adns_globalsystemfailure(ads);
+      }
+    } else {
+      assert(r >= 0);
+      adns_afterpoll(ads,fds,nfds,0);
+    }
+  }
+
+ xit:
+  adns__consistency(ads,0,cc_entex);
+  return r;
+}
+
 #endif