896 lines
21 KiB
C
896 lines
21 KiB
C
/***********************************************************
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Copyright 1987, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Digital not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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/*
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(c)Copyright 1988,1991 Adobe Systems Incorporated. All rights reserved.
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Permission to use, copy, modify, distribute, and sublicense this software and its
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documentation for any purpose and without fee is hereby granted, provided that
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the above copyright notices appear in all copies and that both those copyright
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notices and this permission notice appear in supporting documentation and that
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the name of Adobe Systems Incorporated not be used in advertising or publicity
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pertaining to distribution of the software without specific, written prior
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permission. No trademark license to use the Adobe trademarks is hereby
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granted. If the Adobe trademark "Display PostScript"(tm) is used to describe
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this software, its functionality or for any other purpose, such use shall be
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limited to a statement that this software works in conjunction with the Display
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PostScript system. Proper trademark attribution to reflect Adobe's ownership
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of the trademark shall be given whenever any such reference to the Display
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PostScript system is made.
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ADOBE MAKES NO REPRESENTATIONS ABOUT THE SUITABILITY OF THE SOFTWARE FOR ANY
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PURPOSE. IT IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY. ADOBE
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DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED
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WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-
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INFRINGEMENT OF THIRD PARTY RIGHTS. IN NO EVENT SHALL ADOBE BE LIABLE TO YOU
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OR ANY OTHER PARTY FOR ANY SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
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DAMAGES WHATSOEVER WHETHER IN AN ACTION OF CONTRACT,NEGLIGENCE, STRICT
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LIABILITY OR ANY OTHER ACTION ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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PERFORMANCE OF THIS SOFTWARE. ADOBE WILL NOT PROVIDE ANY TRAINING OR OTHER
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SUPPORT FOR THE SOFTWARE.
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Adobe, PostScript, and Display PostScript are trademarks of Adobe Systems
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Incorporated which may be registered in certain jurisdictions.
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Author: Adobe Systems Incorporated
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <X11/X.h>
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#include <X11/Xmd.h>
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#include "misc.h"
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#include "windowstr.h"
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#include "dixstruct.h"
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#include "pixmapstr.h"
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#include "gcstruct.h"
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#include "scrnintstr.h"
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#define XK_LATIN1
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#include <X11/keysymdef.h>
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#include "xace.h"
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/*
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* CompareTimeStamps returns -1, 0, or +1 depending on if the first
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* argument is less than, equal to or greater than the second argument.
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*/
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int
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CompareTimeStamps(TimeStamp a, TimeStamp b)
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{
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if (a.months < b.months)
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return EARLIER;
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if (a.months > b.months)
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return LATER;
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if (a.milliseconds < b.milliseconds)
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return EARLIER;
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if (a.milliseconds > b.milliseconds)
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return LATER;
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return SAMETIME;
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}
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/*
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* convert client times to server TimeStamps
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*/
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#define HALFMONTH ((unsigned long) 1<<31)
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TimeStamp
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ClientTimeToServerTime(CARD32 c)
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{
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TimeStamp ts;
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if (c == CurrentTime)
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return currentTime;
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ts.months = currentTime.months;
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ts.milliseconds = c;
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if (c > currentTime.milliseconds)
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{
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if (((unsigned long) c - currentTime.milliseconds) > HALFMONTH)
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ts.months -= 1;
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}
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else if (c < currentTime.milliseconds)
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{
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if (((unsigned long)currentTime.milliseconds - c) > HALFMONTH)
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ts.months += 1;
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}
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return ts;
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}
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/*
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* ISO Latin-1 case conversion routine
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*
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* this routine always null-terminates the result, so
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* beware of too-small buffers
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*/
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static unsigned char
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ISOLatin1ToLower (unsigned char source)
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{
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unsigned char dest;
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if ((source >= XK_A) && (source <= XK_Z))
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dest = source + (XK_a - XK_A);
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else if ((source >= XK_Agrave) && (source <= XK_Odiaeresis))
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dest = source + (XK_agrave - XK_Agrave);
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else if ((source >= XK_Ooblique) && (source <= XK_Thorn))
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dest = source + (XK_oslash - XK_Ooblique);
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else
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dest = source;
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return dest;
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}
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int
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CompareISOLatin1Lowered(unsigned char *s1, int s1len,
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unsigned char *s2, int s2len)
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{
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unsigned char c1, c2;
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for (;;)
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{
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/* note -- compare against zero so that -1 ignores len */
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c1 = s1len-- ? *s1++ : '\0';
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c2 = s2len-- ? *s2++ : '\0';
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if (!c1 ||
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(c1 != c2 &&
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(c1 = ISOLatin1ToLower (c1)) != (c2 = ISOLatin1ToLower (c2))))
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break;
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}
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return (int) c1 - (int) c2;
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}
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/*
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* dixLookupWindow and dixLookupDrawable:
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* Look up the window/drawable taking into account the client doing the
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* lookup, the type of drawable desired, and the type of access desired.
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* Return Success with *pDraw set if the window/drawable exists and the client
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* is allowed access, else return an error code with *pDraw set to NULL. The
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* access mask values are defined in resource.h. The type mask values are
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* defined in pixmap.h, with zero equivalent to M_DRAWABLE.
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*/
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int
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dixLookupDrawable(DrawablePtr *pDraw, XID id, ClientPtr client,
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Mask type, Mask access)
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{
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DrawablePtr pTmp;
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int rc;
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*pDraw = NULL;
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client->errorValue = id;
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if (id == INVALID)
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return BadDrawable;
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rc = dixLookupResourceByClass((pointer *)&pTmp, id, RC_DRAWABLE, client, access);
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if (rc == BadValue)
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return BadDrawable;
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if (rc != Success)
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return rc;
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if (!((1 << pTmp->type) & (type ? type : M_DRAWABLE)))
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return BadMatch;
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*pDraw = pTmp;
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return Success;
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}
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int
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dixLookupWindow(WindowPtr *pWin, XID id, ClientPtr client, Mask access)
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{
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int rc;
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rc = dixLookupDrawable((DrawablePtr*)pWin, id, client, M_WINDOW, access);
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return (rc == BadDrawable) ? BadWindow : rc;
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}
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int
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dixLookupGC(GCPtr *pGC, XID id, ClientPtr client, Mask access)
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{
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return dixLookupResourceByType((pointer *)pGC, id, RT_GC, client, access);
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}
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int
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dixLookupFontable(FontPtr *pFont, XID id, ClientPtr client, Mask access)
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{
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int rc;
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GC *pGC;
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client->errorValue = id; /* EITHER font or gc */
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rc = dixLookupResourceByType((pointer *) pFont, id, RT_FONT, client, access);
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if (rc != BadFont)
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return rc;
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rc = dixLookupResourceByType((pointer *) &pGC, id, RT_GC, client, access);
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if (rc == BadGC)
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return BadFont;
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if (rc == Success)
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*pFont = pGC->font;
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return rc;
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}
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int
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dixLookupClient(ClientPtr *pClient, XID rid, ClientPtr client, Mask access)
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{
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pointer pRes;
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int rc = BadValue, clientIndex = CLIENT_ID(rid);
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if (!clientIndex || !clients[clientIndex] || (rid & SERVER_BIT))
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goto bad;
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rc = dixLookupResourceByClass(&pRes, rid, RC_ANY, client, DixGetAttrAccess);
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if (rc != Success)
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goto bad;
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rc = XaceHook(XACE_CLIENT_ACCESS, client, clients[clientIndex], access);
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if (rc != Success)
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goto bad;
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*pClient = clients[clientIndex];
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return Success;
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bad:
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if(client)
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client->errorValue = rid;
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*pClient = NULL;
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return rc;
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}
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int
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AlterSaveSetForClient(ClientPtr client, WindowPtr pWin, unsigned mode,
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Bool toRoot, Bool map)
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{
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int numnow;
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SaveSetElt *pTmp = NULL;
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int j;
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numnow = client->numSaved;
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j = 0;
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if (numnow)
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{
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pTmp = client->saveSet;
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while ((j < numnow) && (SaveSetWindow(pTmp[j]) != (pointer)pWin))
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j++;
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}
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if (mode == SetModeInsert)
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{
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if (j < numnow) /* duplicate */
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return Success;
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numnow++;
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pTmp = (SaveSetElt *)realloc(client->saveSet, sizeof(*pTmp) * numnow);
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if (!pTmp)
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return BadAlloc;
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client->saveSet = pTmp;
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client->numSaved = numnow;
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SaveSetAssignWindow(client->saveSet[numnow - 1], pWin);
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SaveSetAssignToRoot(client->saveSet[numnow - 1], toRoot);
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SaveSetAssignMap(client->saveSet[numnow - 1], map);
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return Success;
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}
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else if ((mode == SetModeDelete) && (j < numnow))
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{
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while (j < numnow-1)
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{
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pTmp[j] = pTmp[j+1];
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j++;
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}
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numnow--;
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if (numnow)
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{
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pTmp = (SaveSetElt *)realloc(client->saveSet, sizeof(*pTmp) * numnow);
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if (pTmp)
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client->saveSet = pTmp;
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}
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else
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{
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free(client->saveSet);
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client->saveSet = (SaveSetElt *)NULL;
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}
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client->numSaved = numnow;
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return Success;
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}
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return Success;
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}
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void
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DeleteWindowFromAnySaveSet(WindowPtr pWin)
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{
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int i;
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ClientPtr client;
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for (i = 0; i< currentMaxClients; i++)
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{
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client = clients[i];
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if (client && client->numSaved)
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(void)AlterSaveSetForClient(client, pWin, SetModeDelete, FALSE, TRUE);
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}
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}
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/* No-op Don't Do Anything : sometimes we need to be able to call a procedure
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* that doesn't do anything. For example, on screen with only static
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* colormaps, if someone calls install colormap, it's easier to have a dummy
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* procedure to call than to check if there's a procedure
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*/
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void
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NoopDDA(void)
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{
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}
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typedef struct _BlockHandler {
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BlockHandlerProcPtr BlockHandler;
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WakeupHandlerProcPtr WakeupHandler;
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pointer blockData;
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Bool deleted;
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} BlockHandlerRec, *BlockHandlerPtr;
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static BlockHandlerPtr handlers;
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static int numHandlers;
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static int sizeHandlers;
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static Bool inHandler;
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static Bool handlerDeleted;
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/**
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*
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* \param pTimeout DIX doesn't want to know how OS represents time
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* \param pReadMask nor how it represents the det of descriptors
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*/
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void
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BlockHandler(pointer pTimeout, pointer pReadmask)
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{
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int i, j;
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++inHandler;
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for (i = 0; i < screenInfo.numScreens; i++)
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(* screenInfo.screens[i]->BlockHandler)(i,
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screenInfo.screens[i]->blockData,
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pTimeout, pReadmask);
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for (i = 0; i < numHandlers; i++)
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if (!handlers[i].deleted)
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(*handlers[i].BlockHandler) (handlers[i].blockData,
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pTimeout, pReadmask);
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if (handlerDeleted)
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{
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for (i = 0; i < numHandlers;)
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if (handlers[i].deleted)
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{
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for (j = i; j < numHandlers - 1; j++)
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handlers[j] = handlers[j+1];
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numHandlers--;
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}
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else
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i++;
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handlerDeleted = FALSE;
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}
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--inHandler;
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}
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/**
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*
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* \param result 32 bits of undefined result from the wait
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* \param pReadmask the resulting descriptor mask
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*/
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void
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WakeupHandler(int result, pointer pReadmask)
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{
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int i, j;
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++inHandler;
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for (i = numHandlers - 1; i >= 0; i--)
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if (!handlers[i].deleted)
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(*handlers[i].WakeupHandler) (handlers[i].blockData,
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result, pReadmask);
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for (i = 0; i < screenInfo.numScreens; i++)
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(* screenInfo.screens[i]->WakeupHandler)(i,
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screenInfo.screens[i]->wakeupData,
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result, pReadmask);
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if (handlerDeleted)
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{
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for (i = 0; i < numHandlers;)
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if (handlers[i].deleted)
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{
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for (j = i; j < numHandlers - 1; j++)
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handlers[j] = handlers[j+1];
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numHandlers--;
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}
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else
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i++;
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handlerDeleted = FALSE;
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}
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--inHandler;
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}
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/**
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* Reentrant with BlockHandler and WakeupHandler, except wakeup won't
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* get called until next time
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*/
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Bool
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RegisterBlockAndWakeupHandlers (BlockHandlerProcPtr blockHandler,
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WakeupHandlerProcPtr wakeupHandler,
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pointer blockData)
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{
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BlockHandlerPtr new;
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if (numHandlers >= sizeHandlers)
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{
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new = (BlockHandlerPtr) realloc(handlers, (numHandlers + 1) *
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sizeof (BlockHandlerRec));
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if (!new)
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return FALSE;
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handlers = new;
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sizeHandlers = numHandlers + 1;
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}
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handlers[numHandlers].BlockHandler = blockHandler;
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handlers[numHandlers].WakeupHandler = wakeupHandler;
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handlers[numHandlers].blockData = blockData;
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handlers[numHandlers].deleted = FALSE;
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numHandlers = numHandlers + 1;
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return TRUE;
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}
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void
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RemoveBlockAndWakeupHandlers (BlockHandlerProcPtr blockHandler,
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WakeupHandlerProcPtr wakeupHandler,
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pointer blockData)
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{
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int i;
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for (i = 0; i < numHandlers; i++)
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if (handlers[i].BlockHandler == blockHandler &&
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handlers[i].WakeupHandler == wakeupHandler &&
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handlers[i].blockData == blockData)
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{
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if (inHandler)
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{
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handlerDeleted = TRUE;
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handlers[i].deleted = TRUE;
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}
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else
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{
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for (; i < numHandlers - 1; i++)
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handlers[i] = handlers[i+1];
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numHandlers--;
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}
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break;
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}
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}
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void
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InitBlockAndWakeupHandlers (void)
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{
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free(handlers);
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handlers = (BlockHandlerPtr) 0;
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numHandlers = 0;
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sizeHandlers = 0;
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}
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/*
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* A general work queue. Perform some task before the server
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* sleeps for input.
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*/
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WorkQueuePtr workQueue;
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static WorkQueuePtr *workQueueLast = &workQueue;
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void
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ProcessWorkQueue(void)
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{
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WorkQueuePtr q, *p;
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p = &workQueue;
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/*
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* Scan the work queue once, calling each function. Those
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* which return TRUE are removed from the queue, otherwise
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* they will be called again. This must be reentrant with
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* QueueWorkProc.
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*/
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while ((q = *p))
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{
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if ((*q->function) (q->client, q->closure))
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{
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/* remove q from the list */
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*p = q->next; /* don't fetch until after func called */
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free(q);
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}
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else
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{
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p = &q->next; /* don't fetch until after func called */
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}
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}
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workQueueLast = p;
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}
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void
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ProcessWorkQueueZombies(void)
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{
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WorkQueuePtr q, *p;
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p = &workQueue;
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while ((q = *p))
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{
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if (q->client && q->client->clientGone)
|
|
{
|
|
(void) (*q->function) (q->client, q->closure);
|
|
/* remove q from the list */
|
|
*p = q->next; /* don't fetch until after func called */
|
|
free(q);
|
|
}
|
|
else
|
|
{
|
|
p = &q->next; /* don't fetch until after func called */
|
|
}
|
|
}
|
|
workQueueLast = p;
|
|
}
|
|
|
|
Bool
|
|
QueueWorkProc (
|
|
Bool (*function)(ClientPtr /* pClient */, pointer /* closure */),
|
|
ClientPtr client, pointer closure)
|
|
{
|
|
WorkQueuePtr q;
|
|
|
|
q = malloc(sizeof *q);
|
|
if (!q)
|
|
return FALSE;
|
|
q->function = function;
|
|
q->client = client;
|
|
q->closure = closure;
|
|
q->next = NULL;
|
|
*workQueueLast = q;
|
|
workQueueLast = &q->next;
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Manage a queue of sleeping clients, awakening them
|
|
* when requested, by using the OS functions IgnoreClient
|
|
* and AttendClient. Note that this *ignores* the troubles
|
|
* with request data interleaving itself with events, but
|
|
* we'll leave that until a later time.
|
|
*/
|
|
|
|
typedef struct _SleepQueue {
|
|
struct _SleepQueue *next;
|
|
ClientPtr client;
|
|
ClientSleepProcPtr function;
|
|
pointer closure;
|
|
} SleepQueueRec, *SleepQueuePtr;
|
|
|
|
static SleepQueuePtr sleepQueue = NULL;
|
|
|
|
Bool
|
|
ClientSleep (ClientPtr client, ClientSleepProcPtr function, pointer closure)
|
|
{
|
|
SleepQueuePtr q;
|
|
|
|
q = malloc(sizeof *q);
|
|
if (!q)
|
|
return FALSE;
|
|
|
|
IgnoreClient (client);
|
|
q->next = sleepQueue;
|
|
q->client = client;
|
|
q->function = function;
|
|
q->closure = closure;
|
|
sleepQueue = q;
|
|
return TRUE;
|
|
}
|
|
|
|
Bool
|
|
ClientSignal (ClientPtr client)
|
|
{
|
|
SleepQueuePtr q;
|
|
|
|
for (q = sleepQueue; q; q = q->next)
|
|
if (q->client == client)
|
|
{
|
|
return QueueWorkProc (q->function, q->client, q->closure);
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
ClientWakeup (ClientPtr client)
|
|
{
|
|
SleepQueuePtr q, *prev;
|
|
|
|
prev = &sleepQueue;
|
|
while ( (q = *prev) )
|
|
{
|
|
if (q->client == client)
|
|
{
|
|
*prev = q->next;
|
|
free(q);
|
|
if (client->clientGone)
|
|
/* Oops -- new zombie cleanup code ensures this only
|
|
* happens from inside CloseDownClient; don't want to
|
|
* recurse here...
|
|
*/
|
|
/* CloseDownClient(client) */;
|
|
else
|
|
AttendClient (client);
|
|
break;
|
|
}
|
|
prev = &q->next;
|
|
}
|
|
}
|
|
|
|
Bool
|
|
ClientIsAsleep (ClientPtr client)
|
|
{
|
|
SleepQueuePtr q;
|
|
|
|
for (q = sleepQueue; q; q = q->next)
|
|
if (q->client == client)
|
|
return TRUE;
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* Generic Callback Manager
|
|
*/
|
|
|
|
/* ===== Private Procedures ===== */
|
|
|
|
static int numCallbackListsToCleanup = 0;
|
|
static CallbackListPtr **listsToCleanup = NULL;
|
|
|
|
static Bool
|
|
_AddCallback(
|
|
CallbackListPtr *pcbl,
|
|
CallbackProcPtr callback,
|
|
pointer data)
|
|
{
|
|
CallbackPtr cbr;
|
|
|
|
cbr = malloc(sizeof(CallbackRec));
|
|
if (!cbr)
|
|
return FALSE;
|
|
cbr->proc = callback;
|
|
cbr->data = data;
|
|
cbr->next = (*pcbl)->list;
|
|
cbr->deleted = FALSE;
|
|
(*pcbl)->list = cbr;
|
|
return TRUE;
|
|
}
|
|
|
|
static Bool
|
|
_DeleteCallback(
|
|
CallbackListPtr *pcbl,
|
|
CallbackProcPtr callback,
|
|
pointer data)
|
|
{
|
|
CallbackListPtr cbl = *pcbl;
|
|
CallbackPtr cbr, pcbr;
|
|
|
|
for (pcbr = NULL, cbr = cbl->list;
|
|
cbr != NULL;
|
|
pcbr = cbr, cbr = cbr->next)
|
|
{
|
|
if ((cbr->proc == callback) && (cbr->data == data))
|
|
break;
|
|
}
|
|
if (cbr != NULL)
|
|
{
|
|
if (cbl->inCallback)
|
|
{
|
|
++(cbl->numDeleted);
|
|
cbr->deleted = TRUE;
|
|
}
|
|
else
|
|
{
|
|
if (pcbr == NULL)
|
|
cbl->list = cbr->next;
|
|
else
|
|
pcbr->next = cbr->next;
|
|
free(cbr);
|
|
}
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
_CallCallbacks(
|
|
CallbackListPtr *pcbl,
|
|
pointer call_data)
|
|
{
|
|
CallbackListPtr cbl = *pcbl;
|
|
CallbackPtr cbr, pcbr;
|
|
|
|
++(cbl->inCallback);
|
|
for (cbr = cbl->list; cbr != NULL; cbr = cbr->next)
|
|
{
|
|
(*(cbr->proc)) (pcbl, cbr->data, call_data);
|
|
}
|
|
--(cbl->inCallback);
|
|
|
|
if (cbl->inCallback) return;
|
|
|
|
/* Was the entire list marked for deletion? */
|
|
|
|
if (cbl->deleted)
|
|
{
|
|
DeleteCallbackList(pcbl);
|
|
return;
|
|
}
|
|
|
|
/* Were some individual callbacks on the list marked for deletion?
|
|
* If so, do the deletions.
|
|
*/
|
|
|
|
if (cbl->numDeleted)
|
|
{
|
|
for (pcbr = NULL, cbr = cbl->list; (cbr != NULL) && cbl->numDeleted; )
|
|
{
|
|
if (cbr->deleted)
|
|
{
|
|
if (pcbr)
|
|
{
|
|
cbr = cbr->next;
|
|
free(pcbr->next);
|
|
pcbr->next = cbr;
|
|
} else
|
|
{
|
|
cbr = cbr->next;
|
|
free(cbl->list);
|
|
cbl->list = cbr;
|
|
}
|
|
cbl->numDeleted--;
|
|
}
|
|
else /* this one wasn't deleted */
|
|
{
|
|
pcbr = cbr;
|
|
cbr = cbr->next;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
_DeleteCallbackList(
|
|
CallbackListPtr *pcbl)
|
|
{
|
|
CallbackListPtr cbl = *pcbl;
|
|
CallbackPtr cbr, nextcbr;
|
|
int i;
|
|
|
|
if (cbl->inCallback)
|
|
{
|
|
cbl->deleted = TRUE;
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < numCallbackListsToCleanup; i++)
|
|
{
|
|
if (listsToCleanup[i] == pcbl)
|
|
{
|
|
listsToCleanup[i] = NULL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (cbr = cbl->list; cbr != NULL; cbr = nextcbr)
|
|
{
|
|
nextcbr = cbr->next;
|
|
free(cbr);
|
|
}
|
|
free(cbl);
|
|
*pcbl = NULL;
|
|
}
|
|
|
|
static Bool
|
|
CreateCallbackList(CallbackListPtr *pcbl)
|
|
{
|
|
CallbackListPtr cbl;
|
|
int i;
|
|
|
|
if (!pcbl) return FALSE;
|
|
cbl = malloc(sizeof(CallbackListRec));
|
|
if (!cbl) return FALSE;
|
|
cbl->inCallback = 0;
|
|
cbl->deleted = FALSE;
|
|
cbl->numDeleted = 0;
|
|
cbl->list = NULL;
|
|
*pcbl = cbl;
|
|
|
|
for (i = 0; i < numCallbackListsToCleanup; i++)
|
|
{
|
|
if (!listsToCleanup[i])
|
|
{
|
|
listsToCleanup[i] = pcbl;
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
listsToCleanup = (CallbackListPtr **)xnfrealloc(listsToCleanup,
|
|
sizeof(CallbackListPtr *) * (numCallbackListsToCleanup+1));
|
|
listsToCleanup[numCallbackListsToCleanup] = pcbl;
|
|
numCallbackListsToCleanup++;
|
|
return TRUE;
|
|
}
|
|
|
|
/* ===== Public Procedures ===== */
|
|
|
|
Bool
|
|
AddCallback(CallbackListPtr *pcbl, CallbackProcPtr callback, pointer data)
|
|
{
|
|
if (!pcbl) return FALSE;
|
|
if (!*pcbl)
|
|
{ /* list hasn't been created yet; go create it */
|
|
if (!CreateCallbackList(pcbl))
|
|
return FALSE;
|
|
}
|
|
return _AddCallback(pcbl, callback, data);
|
|
}
|
|
|
|
Bool
|
|
DeleteCallback(CallbackListPtr *pcbl, CallbackProcPtr callback, pointer data)
|
|
{
|
|
if (!pcbl || !*pcbl) return FALSE;
|
|
return _DeleteCallback(pcbl, callback, data);
|
|
}
|
|
|
|
void
|
|
DeleteCallbackList(CallbackListPtr *pcbl)
|
|
{
|
|
if (!pcbl || !*pcbl) return;
|
|
_DeleteCallbackList(pcbl);
|
|
}
|
|
|
|
void
|
|
InitCallbackManager(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < numCallbackListsToCleanup; i++)
|
|
{
|
|
DeleteCallbackList(listsToCleanup[i]);
|
|
}
|
|
free(listsToCleanup);
|
|
|
|
numCallbackListsToCleanup = 0;
|
|
listsToCleanup = NULL;
|
|
}
|