Retire miniglx and move the actual glx code up to src/glx

1 files changed, 0 insertions, 983 deletions

diff --git a/src/glx/mini/miniglx_events.c b/src/glx/mini/miniglx_events.c
deleted file mode 100644
index a20d5847b3c..00000000000
--- a/src/glx/mini/miniglx_events.c
+++ /dev/null
@@ -1,983 +0,0 @@
-/**
- * \file miniglx_events.c
- * \brief Mini GLX client/server communication functions.
- * \author Keith Whitwell
- *
- * The Mini GLX interface is a subset of the GLX interface, plus a
- * minimal set of Xlib functions.  This file adds interfaces to
- * arbitrate a single cliprect between multiple direct rendering
- * clients.
- *
- * A fairly complete client/server non-blocking communication
- * mechanism.  Probably overkill given that none of our messages
- * currently exceed 1 byte in length and take place over the
- * relatively benign channel provided by a Unix domain socket.
- */
-
-/*
- * Mesa 3-D graphics library
- * Version:  5.0
- *
- * Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * 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
- * BRIAN PAUL 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.
- */
-
-
-
-#include <assert.h>
-#include <errno.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <dlfcn.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <sys/stat.h>
-
-#include <linux/kd.h>
-#include <linux/vt.h>
-
-#include "xf86drm.h"
-#include "miniglxP.h"
-
-
-#define MINIGLX_FIFO_NAME "/tmp/miniglx.fifo"
-
-/**
- * \brief Allocate an XEvent structure on the event queue.
- *
- * \param dpy the display handle.
- *
- * \return Pointer to the queued event structure or NULL on failure.
- * 
- * \internal 
- * If there is space on the XEvent queue, return a pointer
- * to the next free event and increment the eventqueue tail value.
- * Otherwise return null.
- */
-static XEvent *queue_event( Display *dpy )
-{
-   int incr = (dpy->eventqueue.tail + 1) & MINIGLX_EVENT_QUEUE_MASK;
-   if (incr == dpy->eventqueue.head) {
-      return 0;
-   }
-   else {
-      XEvent *ev = &dpy->eventqueue.queue[dpy->eventqueue.tail];
-      dpy->eventqueue.tail = incr;
-      return ev;
-   }
-}
-
-/**
- * \brief Dequeue an XEvent and copy it into provided storage.
- *
- * \param dpy the display handle.
- * \param event_return pointer to copy the queued event to.
- *
- * \return True or False depending on success.
- * 
- * \internal 
- * If there is a queued XEvent on the queue, copy it to the provided
- * pointer and increment the eventqueue head value.  Otherwise return
- * null.
- */
-static int dequeue_event( Display *dpy, XEvent *event_return )
-{
-   if (dpy->eventqueue.tail == dpy->eventqueue.head) {
-      return False;
-   }
-   else {
-      *event_return = dpy->eventqueue.queue[dpy->eventqueue.head];      
-      dpy->eventqueue.head += 1;
-      dpy->eventqueue.head &= MINIGLX_EVENT_QUEUE_MASK;
-      return True;
-   }
-}
-
-/**
- * \brief Shutdown a socket connection.
- *
- * \param dpy the display handle.
- * \param i the index in dpy->fd of the socket connection.
- *
- * \internal 
- * Shutdown and close the file descriptor.  If this is the special
- * connection in fd[0], issue an error message and exit - there's been
- * some sort of failure somewhere.  Otherwise, let the application
- * know about whats happened by issuing a DestroyNotify event.
- */
-static void shut_fd( Display *dpy, int i )
-{
-   if (dpy->fd[i].fd < 0) 
-      return;
-
-   shutdown (dpy->fd[i].fd, SHUT_RDWR);
-   close (dpy->fd[i].fd);
-   dpy->fd[i].fd = -1;
-   dpy->fd[i].readbuf_count = 0;
-   dpy->fd[i].writebuf_count = 0;
-
-   if (i == 0) {
-      fprintf(stderr, "server connection lost\n");
-      exit(1);
-   }
-   else {
-      /* Pass this to the application as a DestroyNotify event.
-       */
-      XEvent *er = queue_event(dpy);
-      if (!er) return;
-      er->xdestroywindow.type = DestroyNotify;
-      er->xdestroywindow.serial = 0;
-      er->xdestroywindow.send_event = 0;
-      er->xdestroywindow.display = dpy;
-      er->xdestroywindow.window = (Window)i;
-
-      drmGetLock(dpy->driverContext.drmFD, 1, 0);
-      drmUnlock(dpy->driverContext.drmFD, 1);
-   }
-}
-
-/**
- * \brief Send a message to a socket connection.
- *
- * \param dpy the display handle.
- * \param i the index in dpy->fd of the socket connection.
- * \param msg the message to send.
- * \param sz the size of the message
- *
- * \internal 
- * Copy the message to the write buffer for the nominated connection.
- * This will be actually sent to that file descriptor from
- * __miniglx_Select().
- */
-int send_msg( Display *dpy, int i,
-		     const void *msg, size_t sz )
-{
-   int cnt = dpy->fd[i].writebuf_count;
-   if (MINIGLX_BUF_SIZE - cnt < sz) {
-      fprintf(stderr, "client %d: writebuf overflow\n", i);
-      return False;
-   }
-   
-   memcpy( dpy->fd[i].writebuf + cnt, msg, sz ); cnt += sz;
-   dpy->fd[i].writebuf_count = cnt;
-   return True;
-}
-
-/**
- * \brief Send a message to a socket connection.
- *
- * \param dpy the display handle.
- * \param i the index in dpy->fd of the socket connection.
- * \param msg the message to send.
- *
- * \internal 
- * Use send_msg() to send a one-byte message to a socket.
- */
-int send_char_msg( Display *dpy, int i, char msg )
-{
-   return send_msg( dpy, i, &msg, sizeof(char));
-}
-
-
-/**
- * \brief Block and receive a message from a socket connection.
- *
- * \param dpy the display handle.
- * \param connection the index in dpy->fd of the socket connection.
- * \param msg storage for the received message.
- * \param msg_size the number of bytes to read.
- *
- * \internal 
- * Block and read from the connection's file descriptor
- * until msg_size bytes have been received.  
- *
- * Only called from welcome_message_part().
- */
-int blocking_read( Display *dpy, int connection, 
-			  char *msg, size_t msg_size )
-{
-   int i, r;
-
-   for (i = 0 ; i < msg_size ; i += r) {
-      r = read(dpy->fd[connection].fd, msg + i, msg_size - i);
-      if (r < 1) {
-	 fprintf(stderr, "blocking_read: %d %s\n", r, strerror(errno));
-	 shut_fd(dpy,connection);
-	 return False;
-      }
-   }
-
-   return True;
-}
-
-/**
- * \brief Send/receive a part of the welcome message.
- *
- * \param dpy the display handle.
- * \param i the index in dpy->fd of the socket connection.
- * \param msg storage for the sent/received message.
- * \param sz the number of bytes to write/read.
- *
- * \return True on success, or False on failure.
- *
- * This function is called by welcome_message_part(), to either send or receive
- * (via blocking_read()) part of the welcome message, according to whether
- * Display::IsClient is set.
- *
- * Each part of the welcome message on the wire consists of a count and then the
- * actual message data with that number of bytes.
- */
-static int welcome_message_part( Display *dpy, int i, void **msg, int sz )
-{
-   if (dpy->IsClient) {
-      int sz;
-      if (!blocking_read( dpy, i, (char *)&sz, sizeof(sz))) return False;
-      if (!*msg) *msg = malloc(sz);
-      if (!*msg) return False;
-      if (!blocking_read( dpy, i, *msg, sz )) return False;
-      return sz;
-   }
-   else {
-      if (!send_msg( dpy, i, &sz, sizeof(sz))) return False;
-      if (!send_msg( dpy, i, *msg, sz )) return False;
-   }
-
-   return True;
-}
-
-/**
- * \brief Send/receive the welcome message.
- *
- * \param dpy the display handle.
- * \param i the index in dpy->fd of the socket connection.
- *
- * \return True on success, or False on failure.
- *
- * Using welcome_message_part(), sends/receives the client ID, the client
- * configuration details in DRIDriverContext::shared, and the driver private
- * message in DRIDriverContext::driverClientMsg.
- */
-static int welcome_message( Display *dpy, int i )
-{
-   void *tmp = &dpy->driverContext.shared;
-   int *clientid = dpy->IsClient ? &dpy->clientID : &i;
-   int size;
-
-   if (!welcome_message_part( dpy, i, (void **)&clientid, sizeof(*clientid)))
-      return False;
-
-   if (!welcome_message_part( dpy, i, &tmp, sizeof(dpy->driverContext.shared)))
-      return False;
-      
-   size=welcome_message_part( dpy, i,
-                              (void **)&dpy->driverContext.driverClientMsg, 
-			      dpy->driverContext.driverClientMsgSize );
-
-   if (!size)
-      return False;
-
-   if (dpy->IsClient) {
-     dpy->driverContext.driverClientMsgSize = size;
-   }
-   return True;
-}
-
-
-/**
- * \brief Handle a new client connection.
- *
- * \param dpy the display handle.
- *
- * \return True on success or False on failure.
- * 
- * Accepts the connection, sets it in non-blocking operation, and finds a free
- * slot in Display::fd for it.
- */
-static int handle_new_client( Display *dpy )
-{
-   struct sockaddr_un client_address;
-   unsigned int l = sizeof(client_address);
-   int r, i;
-
-   r = accept(dpy->fd[0].fd, (struct sockaddr *) &client_address, &l);
-   if (r < 0) {
-      perror ("accept()");
-      shut_fd(dpy,0);
-      return False;
-   } 
-
-   if (fcntl(r, F_SETFL, O_NONBLOCK) != 0) {
-      perror("fcntl");
-      close(r);
-      return False;
-   }
-
-
-   /* Some rough & ready adaption of the XEvent semantics.
-    */ 
-   for (i = 1 ; i < dpy->nrFds ; i++) {
-      if (dpy->fd[i].fd < 0) {
-	 XEvent *er = queue_event(dpy);
-	 if (!er) {
-	    close(r);
-	    return False;
-	 }
-
-	 dpy->fd[i].fd = r;
-	 er->xcreatewindow.type = CreateNotify;
-	 er->xcreatewindow.serial = 0;
-	 er->xcreatewindow.send_event = 0;
-	 er->xcreatewindow.display = dpy;
-	 er->xcreatewindow.window = (Window)i;	/* fd slot == window, now? */
-
-	 /* Send the driver client message - this is expected as the
-	  * first message on a new connection.  The recpient already
-	  * knows the size of the message.
-	  */
-	 welcome_message( dpy, i );
-	 return True;
-      }	    
-   }
-
-
-   fprintf(stderr, "[miniglx] %s: Max nr clients exceeded\n", __FUNCTION__);
-   close(r);
-   return False;
-}
-
-/**
- * This routine "puffs out" the very basic communications between
- * client and server to full-sized X Events that can be handled by the
- * application.
- *
- * \param dpy the display handle.
- * \param i the index in dpy->fd of the socket connection.
- *
- * \return True on success or False on failure.
- *
- * \internal
- * Interprets the message (see msg) into a XEvent and advances the file FIFO
- * buffer.
- */
-static int
-handle_fifo_read( Display *dpy, int i )
-{
-   drm_magic_t magic;
-   int err;
-
-   while (dpy->fd[i].readbuf_count) {
-      char id = dpy->fd[i].readbuf[0];
-      XEvent *er;
-      int count = 1;
-
-      if (dpy->IsClient) {
-	 switch (id) {
-	    /* The server has called XMapWindow on a client window */
-	 case _YouveGotFocus:
-	    er = queue_event(dpy);
-	    if (!er) return False;
-	    er->xmap.type = MapNotify;
-	    er->xmap.serial = 0;
-	    er->xmap.send_event = False;
-	    er->xmap.display = dpy;
-	    er->xmap.event = dpy->TheWindow;
-	    er->xmap.window = dpy->TheWindow;
-	    er->xmap.override_redirect = False;
-	    if (dpy->driver->notifyFocus)
-	       dpy->driver->notifyFocus( 1 ); 
-	    break;
-
-	    /* The server has called XMapWindow on a client window */
-	 case _RepaintPlease:
-	    er = queue_event(dpy);
-	    if (!er) return False;
-	    er->xexpose.type = Expose;
-	    er->xexpose.serial = 0;
-	    er->xexpose.send_event = False;
-	    er->xexpose.display = dpy;
-	    er->xexpose.window = dpy->TheWindow;
-	    if (dpy->rotateMode) {
-	       er->xexpose.x = dpy->TheWindow->y;
-	       er->xexpose.y = dpy->TheWindow->x;
-	       er->xexpose.width = dpy->TheWindow->h;
-	       er->xexpose.height = dpy->TheWindow->w;
-	    }
-	    else {
-	       er->xexpose.x = dpy->TheWindow->x;
-	       er->xexpose.y = dpy->TheWindow->y;
-	       er->xexpose.width = dpy->TheWindow->w;
-	       er->xexpose.height = dpy->TheWindow->h;
-	    }
-	    er->xexpose.count = 0;
-	    break;
-
-	    /* The server has called 'XUnmapWindow' on a client
-	     * window.
-	     */
-	 case _YouveLostFocus:
-	    er = queue_event(dpy);
-	    if (!er) return False;
-	    er->xunmap.type = UnmapNotify;
-	    er->xunmap.serial = 0;
-	    er->xunmap.send_event = False;
-	    er->xunmap.display = dpy;
-	    er->xunmap.event = dpy->TheWindow;
-	    er->xunmap.window = dpy->TheWindow;
-	    er->xunmap.from_configure = False;
-	    if (dpy->driver->notifyFocus)
-	       dpy->driver->notifyFocus( 0 ); 
-	    break;
-            
-         case _Authorize:
-            dpy->authorized = True;
-            break;
-	 
-	 default:
-	    fprintf(stderr, "Client received unhandled message type %d\n", id);
-	    shut_fd(dpy, i);		/* Actually shuts down the client */
-	    return False;
-	 }
-      }
-      else {
-	 switch (id) {
-	    /* Lets the server know that the client is ready to render
-	     * (having called 'XMapWindow' locally).
-	     */
-	 case _CanIHaveFocus:	 
-	    er = queue_event(dpy);
-	    if (!er) return False;
-	    er->xmaprequest.type = MapRequest;
-	    er->xmaprequest.serial = 0;
-	    er->xmaprequest.send_event = False;
-	    er->xmaprequest.display = dpy;
-	    er->xmaprequest.parent = 0;
-	    er->xmaprequest.window = (Window)i;
-	    break;
-
-	    /* Both _YouveLostFocus and _IDontWantFocus generate unmap
-	     * events.  The idea is that _YouveLostFocus lets the client
-	     * know that it has had focus revoked by the server, whereas
-	     * _IDontWantFocus lets the server know that the client has
-	     * unmapped its own window.
-	     */
-	 case _IDontWantFocus:
-	    er = queue_event(dpy);
-	    if (!er) return False;
-	    er->xunmap.type = UnmapNotify;
-	    er->xunmap.serial = 0;
-	    er->xunmap.send_event = False;
-	    er->xunmap.display = dpy;
-	    er->xunmap.event = (Window)i;
-	    er->xunmap.window = (Window)i;
-	    er->xunmap.from_configure = False;
-	    break;
-            
-	 case _Authorize:
-            /* is full message here yet? */
-	    if (dpy->fd[i].readbuf_count < count + sizeof(magic)) {
-               count = 0;
-               break;
-	    }
-            memcpy(&magic, dpy->fd[i].readbuf + count, sizeof(magic));
-	    fprintf(stderr, "Authorize - magic %d\n", magic);
-            
-            err = drmAuthMagic(dpy->driverContext.drmFD, magic);
-	    count += sizeof(magic);
-            
-            send_char_msg( dpy, i, _Authorize );
-	    break;
-
-	 default:
-	    fprintf(stderr, "Server received unhandled message type %d\n", id);
-	    shut_fd(dpy, i);		/* Generates DestroyNotify event */
-	    return False;
-	 }
-      }
-
-      dpy->fd[i].readbuf_count -= count;
-
-      if (dpy->fd[i].readbuf_count) {
-	 memmove(dpy->fd[i].readbuf,
-		 dpy->fd[i].readbuf + count,
-		 dpy->fd[i].readbuf_count);
-      }
-   }
-
-   return True;
-}
-
-/**
- * Handle a VT signal
- *
- * \param dpy display handle.
- *
- * The VT switches is detected by comparing Display::haveVT and
- * Display::hwActive. When loosing the VT the hardware lock is acquired, the
- * hardware is shutdown via a call to DRIDriverRec::shutdownHardware(), and the
- * VT released. When acquiring the VT back the hardware state is restored via a
- * call to DRIDriverRec::restoreHardware() and the hardware lock released.
- */
-static void __driHandleVtSignals( Display *dpy )
-{
-   dpy->vtSignalFlag = 0;
-
-   fprintf(stderr, "%s: haveVT %d hwActive %d\n", __FUNCTION__,
-	   dpy->haveVT, dpy->hwActive);
-
-   if (!dpy->haveVT && dpy->hwActive) {
-      /* Need to get lock and shutdown hardware */
-      DRM_LIGHT_LOCK( dpy->driverContext.drmFD,
-                      dpy->driverContext.pSAREA,
-                      dpy->driverContext.serverContext ); 
-      dpy->driver->shutdownHardware( &dpy->driverContext ); 
-
-      /* Can now give up control of the VT */
-      ioctl( dpy->ConsoleFD, VT_RELDISP, 1 ); 
-      dpy->hwActive = 0;
-   }
-   else if (dpy->haveVT && !dpy->hwActive) {
-      /* Get VT (wait??) */
-      ioctl( dpy->ConsoleFD, VT_RELDISP, VT_ACTIVATE );
-
-      /* restore HW state, release lock */
-      dpy->driver->restoreHardware( &dpy->driverContext ); 
-      DRM_UNLOCK( dpy->driverContext.drmFD,
-                  dpy->driverContext.pSAREA,
-                  dpy->driverContext.serverContext ); 
-      dpy->hwActive = 1;
-   }
-}
-
-
-#undef max
-#define max(x,y) ((x) > (y) ? (x) : (y))
-
-/**
- * Logic for the select() call.
- *
- * \param dpy display handle.
- * \param n highest fd in any set plus one.
- * \param rfds fd set to be watched for reading, or NULL to create one.
- * \param wfds fd set to be watched for writing, or NULL to create one.
- * \param xfds fd set to be watched for exceptions or error, or NULL to create one.
- * \param tv timeout value, or NULL for no timeout.
- * 
- * \return number of file descriptors contained in the sets, or a negative number on failure.
- * 
- * \note
- * This all looks pretty complex, but is necessary especially on the
- * server side to prevent a poorly-behaved client from causing the
- * server to block in a read or write and hence not service the other
- * clients.
- *
- * \sa
- * See select_tut in the Linux manual pages for more discussion.
- *
- * \internal
- * Creates and initializes the file descriptor sets by inspecting Display::fd
- * if these aren't passed in the function call. Calls select() and fulfill the
- * demands by trying to fill MiniGLXConnection::readbuf and draining
- * MiniGLXConnection::writebuf. 
- * The server fd[0] is handled specially for new connections, by calling
- * handle_new_client().
- * 
- */
-int 
-__miniglx_Select( Display *dpy, int n, fd_set *rfds, fd_set *wfds, fd_set *xfds,
-		  struct timeval *tv )
-{
-   int i;
-   int retval;
-   fd_set my_rfds, my_wfds;
-   struct timeval my_tv;
-
-   if (!rfds) {
-      rfds = &my_rfds;
-      FD_ZERO(rfds);
-   }
-
-   if (!wfds) {
-      wfds = &my_wfds;
-      FD_ZERO(wfds);
-   }
-
-   /* Don't block if there are events queued.  Review this if the
-    * flush in XMapWindow is changed to blocking.  (Test case:
-    * miniglxtest).
-    */
-   if (dpy->eventqueue.head != dpy->eventqueue.tail) {
-      my_tv.tv_sec = my_tv.tv_usec = 0;
-      tv = &my_tv;
-   }
-
-   for (i = 0 ; i < dpy->nrFds; i++) {
-      if (dpy->fd[i].fd < 0)
-	 continue;
-      
-      if (dpy->fd[i].writebuf_count)
-	 FD_SET(dpy->fd[i].fd, wfds);
-	 
-      if (dpy->fd[i].readbuf_count < MINIGLX_BUF_SIZE) 
-	 FD_SET(dpy->fd[i].fd, rfds);
-      
-      n = max(n, dpy->fd[i].fd + 1);
-   }
-
-   if (dpy->vtSignalFlag) 
-      __driHandleVtSignals( dpy ); 
-
-   retval = select( n, rfds, wfds, xfds, tv );
-
-   if (dpy->vtSignalFlag) {
-      int tmp = errno;
-      __driHandleVtSignals( dpy ); 
-      errno = tmp;
-   }
-
-   if (retval < 0) {
-      FD_ZERO(rfds);
-      FD_ZERO(wfds);
-      return retval;
-   }
-
-   /* Handle server fd[0] specially on the server - accept new client
-    * connections.
-    */
-   if (!dpy->IsClient) {
-      if (FD_ISSET(dpy->fd[0].fd, rfds)) {
-	 FD_CLR(dpy->fd[0].fd, rfds);
-	 handle_new_client( dpy );
-      }
-   }
-
-   /* Otherwise, try and fill readbuffer and drain writebuffer:
-    */
-   for (i = 0 ; i < dpy->nrFds ; i++) {
-      if (dpy->fd[i].fd < 0) 
-	 continue;
-
-      /* If there aren't any event slots left, don't examine
-       * any more file events.  This will prevent lost events.
-       */
-      if (dpy->eventqueue.head == 
-	  ((dpy->eventqueue.tail + 1) & MINIGLX_EVENT_QUEUE_MASK)) {
-	 fprintf(stderr, "leaving event loop as event queue is full\n");
-	 return retval;
-      }
-
-      if (FD_ISSET(dpy->fd[i].fd, wfds)) {
-	 int r = write(dpy->fd[i].fd,
-		       dpy->fd[i].writebuf,
-		       dpy->fd[i].writebuf_count);
-	 
-	 if (r < 1) 
-	    shut_fd(dpy,i);
-	 else {
-	    dpy->fd[i].writebuf_count -= r;
-	    if (dpy->fd[i].writebuf_count) {
-	       memmove(dpy->fd[i].writebuf,
-		       dpy->fd[i].writebuf + r,
-		       dpy->fd[i].writebuf_count);
-	    }
-	 }
-      }
-
-      if (FD_ISSET(dpy->fd[i].fd, rfds)) {
-	 int r = read(dpy->fd[i].fd, 
-		      dpy->fd[i].readbuf + dpy->fd[i].readbuf_count,
-		      MINIGLX_BUF_SIZE - dpy->fd[i].readbuf_count);
-	 
-	 if (r < 1) 
-	    shut_fd(dpy,i);
-	 else {
-	    dpy->fd[i].readbuf_count += r;
-	 
-	    handle_fifo_read( dpy, i );
-	 }
-      }
-   }
-
-   return retval;
-}
-
-/**
- * \brief Handle socket events.
- *
- * \param dpy the display handle.
- * \param nonblock whether to return immediately or wait for an event.
- *
- * \return True on success, False on failure. Aborts on critical error.
- *
- * \internal
- * This function is the select() main loop.
- */
-int handle_fd_events( Display *dpy, int nonblock )
-{
-   while (1) {
-      struct timeval tv = {0, 0};
-      int r = __miniglx_Select( dpy, 0, 0, 0, 0, nonblock ? &tv : 0 );
-      if (r >= 0) 
-	 return True;
-      if (errno == EINTR || errno == EAGAIN)
-	 continue;
-      perror ("select()");
-      exit (1);
-   }
-}
-
-/**
- * Initializes the connections.
- *
- * \param dpy the display handle.
- *
- * \return True on success or False on failure.
- *
- * Allocates and initializes the Display::fd array and create a Unix socket on
- * the first entry. For a server binds the socket to a filename and listen for
- * connections. For a client connects to the server and waits for a welcome
- * message. Sets the socket in nonblocking mode.
- */
-int __miniglx_open_connections( Display *dpy )
-{
-   struct sockaddr_un sa;
-   int i;
-
-   dpy->nrFds = dpy->IsClient ? 1 : MINIGLX_MAX_SERVER_FDS;
-   dpy->fd = calloc(1, dpy->nrFds * sizeof(struct MiniGLXConnection));
-   if (!dpy->fd)
-      return False;
-
-   for (i = 0 ; i < dpy->nrFds ; i++)
-      dpy->fd[i].fd = -1;
-
-   if (!dpy->IsClient) {
-      if (unlink(MINIGLX_FIFO_NAME) != 0 && errno != ENOENT) { 
-	 perror("unlink " MINIGLX_FIFO_NAME);
- 	 return False; 
-      } 
-      
-   } 
-
-   /* Create a Unix socket -- Note this is *not* a network connection!
-    */
-   dpy->fd[0].fd = socket(PF_UNIX, SOCK_STREAM, 0);
-   if (dpy->fd[0].fd < 0) {
-      perror("socket " MINIGLX_FIFO_NAME);
-      return False;
-   }
-
-   memset(&sa, 0, sizeof(sa));
-   sa.sun_family = AF_UNIX;
-   strcpy(sa.sun_path, MINIGLX_FIFO_NAME);
-
-   if (dpy->IsClient) {
-      /* Connect to server
-       */
-      if (connect(dpy->fd[0].fd, (struct sockaddr *)&sa, sizeof(sa)) != 0) {
-	 perror("connect");
-	 shut_fd(dpy,0);
-	 return False;
-      }
-
-      /* Wait for configuration messages from the server.
-       */
-      welcome_message( dpy, 0 );
-   }
-   else {
-      mode_t tmp = umask( 0000 );		/* open to everybody ? */
-
-      /* Bind socket to our filename
-       */
-      if (bind(dpy->fd[0].fd, (struct sockaddr *)&sa, sizeof(sa)) != 0) {
-	 perror("bind");
-	 shut_fd(dpy,0);
-	 return False;
-      }
-      
-      umask( tmp );
-
-      /* Listen for connections
-       */
-      if (listen(dpy->fd[0].fd, 5) != 0) {
-	 perror("listen");
-	 shut_fd(dpy,0);
-	 return False;
-      }
-   }
-
-   if (fcntl(dpy->fd[0].fd, F_SETFL, O_NONBLOCK) != 0) {
-      perror("fcntl");
-      shut_fd(dpy,0);
-      return False;
-   }
-
-
-   return True;
-}
-
-
-/**
- * Frees the connections initialized by __miniglx_open_connections().
- *
- * \param dpy the display handle.
- */
-void __miniglx_close_connections( Display *dpy )
-{
-   int i;
-
-   for (i = 0 ; i < dpy->nrFds ; i++) {
-      if (dpy->fd[i].fd >= 0) {
-	 shutdown (dpy->fd[i].fd, SHUT_RDWR);
-	 close (dpy->fd[i].fd);
-      }
-   }
-
-   dpy->nrFds = 0;
-   free(dpy->fd);
-}
-
-
-/**
- * Set a drawable flag.
- *
- * \param dpy the display handle.
- * \param w drawable (window).
- * \param flag flag.
- *
- * Sets the specified drawable flag in the SAREA and increment its stamp while
- * holding the light hardware lock.
- */
-static void set_drawable_flag( Display *dpy, int w, int flag )
-{
-   if (dpy->driverContext.pSAREA) {
-      if (dpy->hwActive) 
-	 DRM_LIGHT_LOCK( dpy->driverContext.drmFD,
-			 dpy->driverContext.pSAREA,
-			 dpy->driverContext.serverContext ); 
-
-      dpy->driverContext.pSAREA->drawableTable[w].stamp++;
-      dpy->driverContext.pSAREA->drawableTable[w].flags = flag;
-
-      if (dpy->hwActive) 
-	 DRM_UNLOCK( dpy->driverContext.drmFD,
-		     dpy->driverContext.pSAREA,
-		     dpy->driverContext.serverContext ); 
-   }
-}
-
-
-
-/**
- * \brief Map Window.
- *
- * \param dpy the display handle as returned by XOpenDisplay().
- * \param w the window handle.
- * 
- * If called by a client, sends a request for focus to the server.  If
- * called by the server, will generate a MapNotify and Expose event at
- * the client.
- * 
- */
-void
-XMapWindow( Display *dpy, Window w )
-{
-   if (dpy->IsClient) 
-      send_char_msg( dpy, 0, _CanIHaveFocus );
-   else {
-      set_drawable_flag( dpy, (int)w, 1 );
-      send_char_msg( dpy, (int)w, _YouveGotFocus );
-      send_char_msg( dpy, (int)w, _RepaintPlease );
-      dpy->TheWindow = w;
-   }
-   handle_fd_events( dpy, 0 );	/* flush write queue */
-}
-
-/**
- * \brief Unmap Window.
- *
- * \param dpy the display handle as returned by XOpenDisplay().
- * \param w the window handle.
- * 
- * Called from the client:  Lets the server know that the window won't
- * be updated anymore.
- *
- * Called from the server:  Tells the specified client that it no longer
- * holds the focus.
- */
-void
-XUnmapWindow( Display *dpy, Window w )
-{
-   if (dpy->IsClient) {
-      send_char_msg( dpy, 0, _IDontWantFocus );
-   } 
-   else {
-      dpy->TheWindow = 0;
-      set_drawable_flag( dpy, (int)w, 0 );
-      send_char_msg( dpy, (int)w, _YouveLostFocus );
-   }
-   handle_fd_events( dpy, 0 );	/* flush write queue */
-}
-
-
-/**
- * \brief Block and wait for next X event.
- *
- * \param dpy the display handle as returned by XOpenDisplay().
- * \param event_return a pointer to an XEvent structure for the returned data.
- *
- * Wait until there is a new XEvent pending.
- */
-int XNextEvent(Display *dpy, XEvent *event_return)
-{
-   for (;;) {
-      if ( dpy->eventqueue.head != dpy->eventqueue.tail )
-	 return dequeue_event( dpy, event_return ); 
-      
-      handle_fd_events( dpy, 0 );
-   }
-}
-
-/**
- * \brief Non-blocking check for next X event.
- *
- * \param dpy the display handle as returned by XOpenDisplay().
- * \param event_mask ignored.
- * \param event_return a pointer to an XEvent structure for the returned data.
- *
- * Check if there is a new XEvent pending.  Note that event_mask is
- * ignored and any pending event will be returned.
- */
-Bool XCheckMaskEvent(Display *dpy, long event_mask, XEvent *event_return)
-{
-   if ( dpy->eventqueue.head != dpy->eventqueue.tail )
-      return dequeue_event( dpy, event_return ); 
-
-   handle_fd_events( dpy, 1 );
- 
-   return dequeue_event( dpy, event_return ); 
-}