X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fruntime%2Fio%2FlistenSocket.lc;fp=ghc%2Fruntime%2Fio%2FlistenSocket.lc;h=d9260cfc39a3c06aef9e6dd707fa9fa03c216c85;hb=769ce8e72ae626356ce57162b7ff448c0ef7e700;hp=0000000000000000000000000000000000000000;hpb=a7e6cdbfc4f27c2e0ab9c12ebe6431c246c74c6d;p=ghc-hetmet.git

diff --git a/ghc/runtime/io/listenSocket.lc b/ghc/runtime/io/listenSocket.lc
new file mode 100644
index 0000000..d9260cf
--- /dev/null
+++ b/ghc/runtime/io/listenSocket.lc
@@ -0,0 +1,50 @@
+%
+% (c) The GRASP/AQUA Project, Glasgow University, 1996
+%
+\subsection[listenSocket.lc]{Indicate willingness to receive connections}
+
+\begin{code}
+
+#include "rtsdefs.h"
+#include "stgio.h"
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+
+StgInt
+listenSocket(int sockfd, int backlog)
+{
+    int rc;
+    
+    while ((rc = listen(sockfd, backlog)) < 0) {
+      if (errno != EINTR) {
+	  cvtErrno();
+	  switch (ghc_errno) {
+	  default:
+	      stdErrno();
+	      break;
+	  case GHC_EBADF:
+       	      ghc_errtype = ERR_INVALIDARGUMENT;
+              ghc_errstr  = "Not a valid descriptor";
+	      break;
+	  case GHC_ENOTSOCK:
+	      ghc_errtype = ERR_INVALIDARGUMENT;
+	      ghc_errstr  = "Descriptor not a socket";
+	      break;
+	  case GHC_EOPNOTSUPP:
+	      ghc_errtype = ERR_INVALIDARGUMENT;
+	      ghc_errstr  = "Socket not of type that supports listen";
+	      break;
+	  }
+	  return -1;
+      }
+    }
+    return 0;
+}
+
+\end{code}