From 7336516a6f2ac781b4a78a73f99e41e9e8b66e63 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Wed, 17 Jun 2009 22:37:31 +0300
Subject: [PATCH] Refactor winsock initialization into a separate function

Signed-off-by: Martin Storsjo <martin@martin.st>
---
 compat/mingw.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/compat/mingw.c b/compat/mingw.c
index bed417875e..f570d115c9 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -886,16 +886,25 @@ char **env_setenv(char **env, const char *name)
 	return env;
 }
 
-/* this is the first function to call into WS_32; initialize it */
-#undef gethostbyname
-struct hostent *mingw_gethostbyname(const char *host)
+static void ensure_socket_initialization(void)
 {
 	WSADATA wsa;
+	static int initialized = 0;
+
+	if (initialized)
+		return;
 
 	if (WSAStartup(MAKEWORD(2,2), &wsa))
 		die("unable to initialize winsock subsystem, error %d",
 			WSAGetLastError());
 	atexit((void(*)(void)) WSACleanup);
+	initialized = 1;
+}
+
+#undef gethostbyname
+struct hostent *mingw_gethostbyname(const char *host)
+{
+	ensure_socket_initialization();
 	return gethostbyname(host);
 }