From 1bf430d1d670fd6c3dd7ac90172746ab597ee5af Mon Sep 17 00:00:00 2001
From: Olaf Barthel <obarthel@gmx.net>
Date: Fri, 4 Mar 2005 20:08:19 +0000
Subject: [PATCH] - In the thread-safe variant, the library now tries to allow 
  multiple concurrent callers to use the socket functions. Note   that this
 works only with the Roadshow TCP/IP stack, and the   results with other
 TCP/IP stacks are rather unpredictable.

git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14858 87f5fb63-7c3d-0410-a384-fd976d0f7a62
---
 library/changes            |  5 +++++
 library/socket_init_exit.c | 25 ++++++++++++++++++++++++-
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/library/changes b/library/changes
index 5e22fe9..38d55b8 100644
--- a/library/changes
+++ b/library/changes
@@ -104,6 +104,11 @@
 - Creation and initialization of semaphores now uses the AmigaOS4
   specific functions for this purpose, if available.
 
+- In the thread-safe variant, the library now tries to allow
+  multiple concurrent callers to use the socket functions. Note
+  that this works only with the Roadshow TCP/IP stack, and the
+  results with other TCP/IP stacks are rather unpredictable.
+
 
 c.lib 1.188 (7.2.2005)
 
diff --git a/library/socket_init_exit.c b/library/socket_init_exit.c
index d063672..c69a85b 100644
--- a/library/socket_init_exit.c
+++ b/library/socket_init_exit.c
@@ -1,5 +1,5 @@
 /*
- * $Id: socket_init_exit.c,v 1.11 2005-03-03 14:20:55 obarthel Exp $
+ * $Id: socket_init_exit.c,v 1.12 2005-03-04 20:08:19 obarthel Exp $
  *
  * :ts=4
  *
@@ -197,6 +197,29 @@ __socket_init(void)
 		goto out;
 	}
 
+	/* If this library is built with the Roadshow SDK header files, and
+	 * it should be thread-safe, then we'll try to allow multiple
+	 * concurred processes to share the bsdsocket.library base opened
+	 * above. This only works for Roadshow, though, and has the
+	 * drawback that error reporting through 'errno' and 'h_errno'
+	 * is no longer safe.
+	 */
+	#if defined(__THREAD_SAFE) && defined(SBTC_CAN_SHARE_LIBRARY_BASES)
+	{
+		if(SocketBase->lib_Version >= 4)
+		{
+			tags[0].ti_Tag	= SBTM_SETVAL(SBTC_CAN_SHARE_LIBRARY_BASES);
+			tags[0].ti_Data	= TRUE;
+
+			tags[1].ti_Tag	= TAG_END;
+
+			PROFILE_OFF();
+			__SocketBaseTagList(tags);
+			PROFILE_ON();
+		}
+	}
+	#endif /* __THREAD_SAFE && SBTC_CAN_SHARE_LIBRARY_BASES */
+
 	/* Check if this program was launched as a server by the Internet
 	 * superserver.
 	 */