R6.6 is the Xorg base-lineXORG-MAINXORG-STABLE

1 files changed, 325 insertions, 0 deletions

diff --git a/src/shutdown.c b/src/shutdown.c
new file mode 100644
index 0000000..94a7eb9
--- /dev/null
+++ b/src/shutdown.c
@@ -0,0 +1,325 @@
+/* $Xorg: shutdown.c,v 1.4 2001/02/09 02:03:26 xorgcvs Exp $ */
+/******************************************************************************
+
+
+Copyright 1993, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+Author: Ralph Mor, X Consortium
+******************************************************************************/
+
+#include <X11/ICE/ICElib.h>
+#include "ICElibint.h"
+
+
+Status
+IceProtocolShutdown (iceConn, majorOpcode)
+
+IceConn iceConn;
+int	majorOpcode;
+
+{
+    if (iceConn->proto_ref_count == 0 || iceConn->process_msg_info == NULL ||
+        majorOpcode < 1 || majorOpcode > _IceLastMajorOpcode)
+    {
+	return (0);
+    }
+    else
+    {
+	/*
+	 * Make sure this majorOpcode is really being used.
+	 */
+
+	int i;
+
+	for (i = iceConn->his_min_opcode; i <= iceConn->his_max_opcode; i++)
+	{
+	    if (iceConn->process_msg_info[
+		i - iceConn->his_min_opcode].in_use &&
+                iceConn->process_msg_info[
+		i - iceConn->his_min_opcode].my_opcode == majorOpcode)
+		break;
+	}
+
+	if (i > iceConn->his_max_opcode)
+	{
+	    return (0);
+	}
+	else
+	{
+	    /*
+	     * OK, we can shut down the protocol.
+	     */
+
+	    iceConn->process_msg_info[
+		i - iceConn->his_min_opcode].in_use = False;
+	    iceConn->proto_ref_count--;
+
+	    return (1);
+	}
+    }
+}
+
+
+
+void
+IceSetShutdownNegotiation (iceConn, negotiate)
+
+IceConn     	iceConn;
+Bool		negotiate;
+
+{
+    iceConn->skip_want_to_close = negotiate ? False : True;
+}
+
+
+
+Bool
+IceCheckShutdownNegotiation (iceConn)
+
+IceConn     iceConn;
+
+{
+    return (iceConn->skip_want_to_close ? False : True);
+}
+
+
+
+IceCloseStatus
+IceCloseConnection (iceConn)
+
+IceConn     iceConn;
+
+{
+    int refCountReachedZero;
+    IceCloseStatus status;
+
+    /*
+     * If this connection object was never valid, we can close
+     * it right now.  This happens if IceAcceptConnection was
+     * called, but after calling IceProcessMessages several times
+     * the connection was rejected (because of authentication or
+     * some other reason).
+     */
+
+    if (iceConn->listen_obj &&
+	iceConn->connection_status != IceConnectAccepted)
+    {
+	_IceConnectionClosed (iceConn);		/* invoke watch procs */
+	_IceFreeConnection (iceConn);
+	return (IceClosedNow);
+    }
+
+
+    /*---------------------------------------------------------------
+
+    ACTIONS:
+
+    A = Invoke Watch Procedures
+    B = Set free-asap bit
+    C = Free connection
+    D = Initialize shutdown negotiation
+    N = do nothing
+
+
+    ACTION TABLE:
+
+    IO	       free-      dispatch   protocol   shutdown
+    error      asap bit   level      refcount   negotiation     ACTION
+    occured    set        reached 0  reached 0
+    
+        0          0          0          0          0		N
+        0          0          0          0          1		N
+        0          0          0          1          0		AB
+        0          0          0          1          1		N
+        0          0          1          0          0		N
+        0          0          1          0          1		N
+        0          0          1          1          0		AC
+        0          0          1          1          1		D
+        0          1          0          0          0		N
+        0          1          0          0          1		N
+        0          1          0          1          0		N
+        0          1          0          1          1		N
+        0          1          1          0          0		C
+        0          1          1          0          1		D
+        0          1          1          1          0		C
+        0          1          1          1          1		D
+        1          0          0          0          0		AB
+        1          0          0          0          1		AB
+        1          0          0          1          0		AB
+        1          0          0          1          1		AB
+        1          0          1          0          0		AC
+        1          0          1          0          1		AC
+        1          0          1          1          0		AC
+        1          0          1          1          1		AC
+        1          1          0          0          0		N
+        1          1          0          0          1		N
+        1          1          0          1          0		N
+        1          1          0          1          1		N
+        1          1          1          0          0		C
+        1          1          1          0          1		C
+        1          1          1          1          0		C
+        1          1          1          1          1		C
+
+    ---------------------------------------------------------------*/
+
+    if (iceConn->open_ref_count > 0)
+	iceConn->open_ref_count--;
+
+    refCountReachedZero = iceConn->open_ref_count == 0 &&
+	iceConn->proto_ref_count == 0;
+
+    status = IceConnectionInUse;
+
+    if (!iceConn->free_asap && (!iceConn->io_ok ||
+	(iceConn->io_ok && refCountReachedZero &&
+	iceConn->skip_want_to_close)))
+    {
+	/*
+	 * Invoke the watch procedures now.
+	 */
+
+	_IceConnectionClosed (iceConn);
+	status = IceClosedNow;	     /* may be overwritten by IceClosedASAP */
+    }
+
+    if (!iceConn->free_asap && iceConn->dispatch_level != 0 &&
+	(!iceConn->io_ok ||
+	(iceConn->io_ok && refCountReachedZero &&
+	iceConn->skip_want_to_close)))
+    {
+	/*
+	 * Set flag so we free the connection as soon as possible.
+	 */
+
+	iceConn->free_asap = True;
+	status = IceClosedASAP;
+    }
+
+    if (iceConn->io_ok && iceConn->dispatch_level == 0 &&
+	!iceConn->skip_want_to_close && refCountReachedZero)
+    {
+	/*
+	 * Initiate shutdown negotiation.
+	 */
+
+	IceSimpleMessage (iceConn, 0, ICE_WantToClose);
+	IceFlush (iceConn);
+
+	iceConn->want_to_close = 1;
+
+	status = IceStartedShutdownNegotiation;
+    }
+    else if (iceConn->dispatch_level == 0 &&
+	(!iceConn->io_ok || (iceConn->io_ok && iceConn->skip_want_to_close &&
+	(iceConn->free_asap || (!iceConn->free_asap && refCountReachedZero)))))
+    {
+	/*
+	 * Free the connection.
+	 */
+
+	_IceFreeConnection (iceConn);
+
+	status = IceClosedNow;
+    }
+
+    return (status);
+}
+
+
+
+void
+_IceFreeConnection (iceConn)
+
+IceConn iceConn;
+
+{
+    if (iceConn->listen_obj == NULL)
+    {
+	/*
+	 * This iceConn was created with IceOpenConnection.
+	 * We keep track of all open IceConn's, so we need
+	 * to remove it from the list.
+	 */
+
+	int i;
+
+	for (i = 0; i < _IceConnectionCount; i++)
+	    if (_IceConnectionObjs[i] == iceConn)
+		break;
+
+	if (i < _IceConnectionCount)
+	{
+	    if (i < _IceConnectionCount - 1)
+	    {
+		_IceConnectionObjs[i] =
+		    _IceConnectionObjs[_IceConnectionCount - 1];
+		_IceConnectionStrings[i] =
+		    _IceConnectionStrings[_IceConnectionCount - 1];
+	    }
+
+	    _IceConnectionCount--;
+	}
+    }
+
+    if (iceConn->trans_conn)
+	_IceTransClose (iceConn->trans_conn);
+
+    if (iceConn->connection_string)
+	free (iceConn->connection_string);
+
+    if (iceConn->vendor)
+	free (iceConn->vendor);
+
+    if (iceConn->release)
+	free (iceConn->release);
+
+    if (iceConn->inbuf)
+	free (iceConn->inbuf);
+
+    if (iceConn->outbuf)
+	free (iceConn->outbuf);
+
+    if (iceConn->scratch)
+	free (iceConn->scratch);
+
+    if (iceConn->process_msg_info)
+	free ((char *) iceConn->process_msg_info);
+
+    if (iceConn->connect_to_you)
+	free ((char *) iceConn->connect_to_you);
+
+    if (iceConn->protosetup_to_you)
+	free ((char *) iceConn->protosetup_to_you);
+
+    if (iceConn->connect_to_me)
+	free ((char *) iceConn->connect_to_me);
+
+    if (iceConn->protosetup_to_me)
+	free ((char *) iceConn->protosetup_to_me);
+
+    free ((char *) iceConn);
+}
+
+
+
+