1 files changed, 30 insertions, 0 deletions
diff --git a/src/libstddjb/socket_ioloop.c b/src/libstddjb/socket_ioloop.c
new file mode 100644
index 0000000..a158f01
--- /dev/null
+++ b/src/libstddjb/socket_ioloop.c
@@ -0,0 +1,30 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <skalibs/error.h>
+#include <skalibs/uint16.h>
+#include <skalibs/tai.h>
+#include <skalibs/iopause.h>
+#include <skalibs/socket.h>
+
+int socket_ioloop (int s, char *buf, unsigned int len, char *ip, uint16 *port, socket_io_func_t_ref f, int w, tain_t const *deadline, tain_t *stamp)
+{
+  iopause_fd x = { .fd = s, .events = w ? IOPAUSE_WRITE : IOPAUSE_READ, .revents = 0 } ;
+  for (;;)
+  {
+    register int r = iopause_stamp(&x, 1, deadline, stamp) ;
+    if (r < 0) return -1 ;
+    if (!r) return (errno = ETIMEDOUT, -1) ;
+    if (x.revents & IOPAUSE_EXCEPT) return (errno = EIO, -1) ;
+    if (x.revents & x.events)
+    {
+      r = (*f)(s, buf, len, ip, port) ;
+      if (r < 0)
+      {
+        if (!error_isagain(errno)) return -1 ;
+      }
+      else return r ;
+    }
+  }
+}
+