+++ /dev/null
-/***********************************************************
-
-Copyright (c) 1987 X Consortium
-
-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 THE
-X CONSORTIUM 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 X Consortium 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 X Consortium.
-
-
-Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
-
- All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and its
-documentation for any purpose and without fee is hereby granted,
-provided that the above copyright notice appear in all copies and that
-both that copyright notice and this permission notice appear in
-supporting documentation, and that the name of Digital not be
-used in advertising or publicity pertaining to distribution of the
-software without specific, written prior permission.
-
-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
-DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
-ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
-WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
-SOFTWARE.
-
-******************************************************************/
-
-/*
-
-(c)Copyright 1988,1991 Adobe Systems Incorporated. All rights reserved.
-
-Permission to use, copy, modify, distribute, and sublicense this software and its
-documentation for any purpose and without fee is hereby granted, provided that
-the above copyright notices appear in all copies and that both those copyright
-notices and this permission notice appear in supporting documentation and that
-the name of Adobe Systems Incorporated not be used in advertising or publicity
-pertaining to distribution of the software without specific, written prior
-permission. No trademark license to use the Adobe trademarks is hereby
-granted. If the Adobe trademark "Display PostScript"(tm) is used to describe
-this software, its functionality or for any other purpose, such use shall be
-limited to a statement that this software works in conjunction with the Display
-PostScript system. Proper trademark attribution to reflect Adobe's ownership
-of the trademark shall be given whenever any such reference to the Display
-PostScript system is made.
-
-ADOBE MAKES NO REPRESENTATIONS ABOUT THE SUITABILITY OF THE SOFTWARE FOR ANY
-PURPOSE. IT IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY. ADOBE
-DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED
-WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-
-INFRINGEMENT OF THIRD PARTY RIGHTS. IN NO EVENT SHALL ADOBE BE LIABLE TO YOU
-OR ANY OTHER PARTY FOR ANY SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
-DAMAGES WHATSOEVER WHETHER IN AN ACTION OF CONTRACT,NEGLIGENCE, STRICT
-LIABILITY OR ANY OTHER ACTION ARISING OUT OF OR IN CONNECTION WITH THE USE OR
-PERFORMANCE OF THIS SOFTWARE. ADOBE WILL NOT PROVIDE ANY TRAINING OR OTHER
-SUPPORT FOR THE SOFTWARE.
-
-Adobe, PostScript, and Display PostScript are trademarks of Adobe Systems
-Incorporated which may be registered in certain jurisdictions.
-
-Author: Adobe Systems Incorporated
-
-*/
-
-/* $TOG: dixutils.c /main/33 1997/05/22 10:02:20 kaleb $ */
-
-
-
-
-/* $XFree86: xc/programs/Xserver/dix/dixutils.c,v 3.1.2.1 1997/05/23 12:19:35 dawes Exp $ */
-
-#include "X.h"
-#include "Xmd.h"
-#include "misc.h"
-#include "windowstr.h"
-#include "dixstruct.h"
-#include "pixmapstr.h"
-#include "scrnintstr.h"
-#define XK_LATIN1
-#include "keysymdef.h"
-#ifdef XCSECURITY
-#define _SECURITY_SERVER
-#include "extensions/security.h"
-#endif
-
-/*
- * CompareTimeStamps returns -1, 0, or +1 depending on if the first
- * argument is less than, equal to or greater than the second argument.
- */
-
-int
-CompareTimeStamps(a, b)
- TimeStamp a, b;
-{
- if (a.months < b.months)
- return EARLIER;
- if (a.months > b.months)
- return LATER;
- if (a.milliseconds < b.milliseconds)
- return EARLIER;
- if (a.milliseconds > b.milliseconds)
- return LATER;
- return SAMETIME;
-}
-
-/*
- * convert client times to server TimeStamps
- */
-
-#define HALFMONTH ((unsigned long) 1<<31)
-TimeStamp
-ClientTimeToServerTime(c)
- CARD32 c;
-{
- TimeStamp ts;
- if (c == CurrentTime)
- return currentTime;
- ts.months = currentTime.months;
- ts.milliseconds = c;
- if (c > currentTime.milliseconds)
- {
- if (((unsigned long) c - currentTime.milliseconds) > HALFMONTH)
- ts.months -= 1;
- }
- else if (c < currentTime.milliseconds)
- {
- if (((unsigned long)currentTime.milliseconds - c) > HALFMONTH)
- ts.months += 1;
- }
- return ts;
-}
-
-/*
- * ISO Latin-1 case conversion routine
- *
- * this routine always null-terminates the result, so
- * beware of too-small buffers
- */
-
-void
-CopyISOLatin1Lowered(dest, source, length)
- register unsigned char *dest, *source;
- int length;
-{
- register int i;
-
- for (i = 0; i < length; i++, source++, dest++)
- {
- if ((*source >= XK_A) && (*source <= XK_Z))
- *dest = *source + (XK_a - XK_A);
- else if ((*source >= XK_Agrave) && (*source <= XK_Odiaeresis))
- *dest = *source + (XK_agrave - XK_Agrave);
- else if ((*source >= XK_Ooblique) && (*source <= XK_Thorn))
- *dest = *source + (XK_oslash - XK_Ooblique);
- else
- *dest = *source;
- }
- *dest = '\0';
-}
-
-#ifdef XCSECURITY
-
-/* SecurityLookupWindow and SecurityLookupDrawable:
- * Look up the window/drawable taking into account the client doing
- * the lookup and the type of access desired. Return the window/drawable
- * if it exists and the client is allowed access, else return NULL.
- * Most Proc* functions should be calling these instead of
- * LookupWindow and LookupDrawable, which do no access checks.
- */
-
-WindowPtr
-SecurityLookupWindow(rid, client, access_mode)
- XID rid;
- ClientPtr client;
- Mask access_mode;
-{
- WindowPtr pWin;
-
- client->errorValue = rid;
- if(rid == INVALID)
- return NULL;
- if (client->trustLevel != XSecurityClientTrusted)
- return (WindowPtr)SecurityLookupIDByType(client, rid, RT_WINDOW, access_mode);
- if (client->lastDrawableID == rid)
- {
- if (client->lastDrawable->type == DRAWABLE_WINDOW)
- return ((WindowPtr) client->lastDrawable);
- return (WindowPtr) NULL;
- }
- pWin = (WindowPtr)SecurityLookupIDByType(client, rid, RT_WINDOW, access_mode);
- if (pWin && pWin->drawable.type == DRAWABLE_WINDOW) {
- client->lastDrawable = (DrawablePtr) pWin;
- client->lastDrawableID = rid;
- client->lastGCID = INVALID;
- client->lastGC = (GCPtr)NULL;
- }
- return pWin;
-}
-
-
-pointer
-SecurityLookupDrawable(rid, client, access_mode)
- XID rid;
- ClientPtr client;
- Mask access_mode;
-{
- register DrawablePtr pDraw;
-
- if(rid == INVALID)
- return (pointer) NULL;
- if (client->trustLevel != XSecurityClientTrusted)
- return (DrawablePtr)SecurityLookupIDByClass(client, rid, RC_DRAWABLE,
- access_mode);
- if (client->lastDrawableID == rid)
- return ((pointer) client->lastDrawable);
- pDraw = (DrawablePtr)SecurityLookupIDByClass(client, rid, RC_DRAWABLE,
- access_mode);
- if (pDraw && (pDraw->type != UNDRAWABLE_WINDOW))
- return (pointer)pDraw;
- return (pointer)NULL;
-}
-
-/* We can't replace the LookupWindow and LookupDrawable functions with
- * macros because of compatibility with loadable servers.
- */
-
-WindowPtr
-LookupWindow(rid, client)
- XID rid;
- ClientPtr client;
-{
- return SecurityLookupWindow(rid, client, SecurityUnknownAccess);
-}
-
-pointer
-LookupDrawable(rid, client)
- XID rid;
- ClientPtr client;
-{
- return SecurityLookupDrawable(rid, client, SecurityUnknownAccess);
-}
-
-#else /* not XCSECURITY */
-
-WindowPtr
-LookupWindow(rid, client)
- XID rid;
- ClientPtr client;
-{
- WindowPtr pWin;
-
- client->errorValue = rid;
- if(rid == INVALID)
- return NULL;
- if (client->lastDrawableID == rid)
- {
- if (client->lastDrawable->type == DRAWABLE_WINDOW)
- return ((WindowPtr) client->lastDrawable);
- return (WindowPtr) NULL;
- }
- pWin = (WindowPtr)LookupIDByType(rid, RT_WINDOW);
- if (pWin && pWin->drawable.type == DRAWABLE_WINDOW) {
- client->lastDrawable = (DrawablePtr) pWin;
- client->lastDrawableID = rid;
- client->lastGCID = INVALID;
- client->lastGC = (GCPtr)NULL;
- }
- return pWin;
-}
-
-
-pointer
-LookupDrawable(rid, client)
- XID rid;
- ClientPtr client;
-{
- register DrawablePtr pDraw;
-
- if(rid == INVALID)
- return (pointer) NULL;
- if (client->lastDrawableID == rid)
- return ((pointer) client->lastDrawable);
- pDraw = (DrawablePtr)LookupIDByClass(rid, RC_DRAWABLE);
- if (pDraw && (pDraw->type != UNDRAWABLE_WINDOW))
- return (pointer)pDraw;
- return (pointer)NULL;
-}
-
-#endif /* XCSECURITY */
-
-ClientPtr
-LookupClient(rid, client)
- XID rid;
- ClientPtr client;
-{
- pointer pRes = (pointer)SecurityLookupIDByClass(client, rid, RC_ANY,
- SecurityReadAccess);
- int clientIndex = CLIENT_ID(rid);
-
- if (clientIndex && pRes && clients[clientIndex] && !(rid & SERVER_BIT))
- {
- return clients[clientIndex];
- }
- return (ClientPtr)NULL;
-}
-
-
-int
-AlterSaveSetForClient(client, pWin, mode)
- ClientPtr client;
- WindowPtr pWin;
- unsigned mode;
-{
- int numnow;
- pointer *pTmp;
- int j;
-
- numnow = client->numSaved;
- j = 0;
- if (numnow)
- {
- pTmp = client->saveSet;
- while ((j < numnow) && (pTmp[j] != (pointer)pWin))
- j++;
- }
- if (mode == SetModeInsert)
- {
- if (j < numnow) /* duplicate */
- return(Success);
- numnow++;
- pTmp = (pointer *)xrealloc(client->saveSet, sizeof(pointer) * numnow);
- if (!pTmp)
- return(BadAlloc);
- client->saveSet = pTmp;
- client->numSaved = numnow;
- client->saveSet[numnow - 1] = (pointer)pWin;
- return(Success);
- }
- else if ((mode == SetModeDelete) && (j < numnow))
- {
- while (j < numnow-1)
- {
- pTmp[j] = pTmp[j+1];
- j++;
- }
- numnow--;
- if (numnow)
- {
- pTmp = (pointer *)xrealloc(client->saveSet,
- sizeof(pointer) * numnow);
- if (pTmp)
- client->saveSet = pTmp;
- }
- else
- {
- xfree(client->saveSet);
- client->saveSet = (pointer *)NULL;
- }
- client->numSaved = numnow;
- return(Success);
- }
- return(Success);
-}
-
-void
-DeleteWindowFromAnySaveSet(pWin)
- WindowPtr pWin;
-{
- register int i;
- register ClientPtr client;
-
- for (i = 0; i< currentMaxClients; i++)
- {
- client = clients[i];
- if (client && client->numSaved)
- (void)AlterSaveSetForClient(client, pWin, SetModeDelete);
- }
-}
-
-/* No-op Don't Do Anything : sometimes we need to be able to call a procedure
- * that doesn't do anything. For example, on screen with only static
- * colormaps, if someone calls install colormap, it's easier to have a dummy
- * procedure to call than to check if there's a procedure
- */
-void
-NoopDDA(
-#if NeedVarargsPrototypes
- void* f, ...
-#endif
-)
-{
-}
-
-typedef struct _BlockHandler {
- BlockHandlerProcPtr BlockHandler;
- WakeupHandlerProcPtr WakeupHandler;
- pointer blockData;
- Bool deleted;
-} BlockHandlerRec, *BlockHandlerPtr;
-
-static BlockHandlerPtr handlers;
-static int numHandlers;
-static int sizeHandlers;
-static Bool inHandler;
-static Bool handlerDeleted;
-
-/* called from the OS layer */
-void
-BlockHandler(pTimeout, pReadmask)
-pointer pTimeout; /* DIX doesn't want to know how OS represents time */
-pointer pReadmask; /* nor how it represents the set of descriptors */
-{
- register int i, j;
-
- ++inHandler;
- for (i = 0; i < screenInfo.numScreens; i++)
- (* screenInfo.screens[i]->BlockHandler)(i,
- screenInfo.screens[i]->blockData,
- pTimeout, pReadmask);
- for (i = 0; i < numHandlers; i++)
- (*handlers[i].BlockHandler) (handlers[i].blockData,
- pTimeout, pReadmask);
- if (handlerDeleted)
- {
- for (i = 0; i < numHandlers;)
- if (handlers[i].deleted)
- {
- for (j = i; j < numHandlers - 1; j++)
- handlers[j] = handlers[j+1];
- numHandlers--;
- }
- else
- i++;
- handlerDeleted = FALSE;
- }
- --inHandler;
-}
-
-void
-WakeupHandler(result, pReadmask)
-int result; /* 32 bits of undefined result from the wait */
-pointer pReadmask; /* the resulting descriptor mask */
-{
- register int i, j;
-
- ++inHandler;
- for (i = numHandlers - 1; i >= 0; i--)
- (*handlers[i].WakeupHandler) (handlers[i].blockData,
- result, pReadmask);
- for (i = 0; i < screenInfo.numScreens; i++)
- (* screenInfo.screens[i]->WakeupHandler)(i,
- screenInfo.screens[i]->wakeupData,
- result, pReadmask);
- if (handlerDeleted)
- {
- for (i = 0; i < numHandlers;)
- if (handlers[i].deleted)
- {
- for (j = i; j < numHandlers - 1; j++)
- handlers[j] = handlers[j+1];
- numHandlers--;
- }
- else
- i++;
- handlerDeleted = FALSE;
- }
- --inHandler;
-}
-
-/* Reentrant with BlockHandler and WakeupHandler, except wakeup won't
- * get called until next time
- */
-
-Bool
-RegisterBlockAndWakeupHandlers (blockHandler, wakeupHandler, blockData)
- BlockHandlerProcPtr blockHandler;
- WakeupHandlerProcPtr wakeupHandler;
- pointer blockData;
-{
- BlockHandlerPtr new;
-
- if (numHandlers >= sizeHandlers)
- {
- new = (BlockHandlerPtr) xrealloc (handlers, (numHandlers + 1) *
- sizeof (BlockHandlerRec));
- if (!new)
- return FALSE;
- handlers = new;
- sizeHandlers = numHandlers + 1;
- }
- handlers[numHandlers].BlockHandler = blockHandler;
- handlers[numHandlers].WakeupHandler = wakeupHandler;
- handlers[numHandlers].blockData = blockData;
- handlers[numHandlers].deleted = FALSE;
- numHandlers = numHandlers + 1;
- return TRUE;
-}
-
-void
-RemoveBlockAndWakeupHandlers (blockHandler, wakeupHandler, blockData)
- BlockHandlerProcPtr blockHandler;
- WakeupHandlerProcPtr wakeupHandler;
- pointer blockData;
-{
- int i;
-
- for (i = 0; i < numHandlers; i++)
- if (handlers[i].BlockHandler == blockHandler &&
- handlers[i].WakeupHandler == wakeupHandler &&
- handlers[i].blockData == blockData)
- {
- if (inHandler)
- {
- handlerDeleted = TRUE;
- handlers[i].deleted = TRUE;
- }
- else
- {
- for (; i < numHandlers - 1; i++)
- handlers[i] = handlers[i+1];
- numHandlers--;
- }
- break;
- }
-}
-
-void
-InitBlockAndWakeupHandlers ()
-{
- xfree (handlers);
- handlers = (BlockHandlerPtr) 0;
- numHandlers = 0;
- sizeHandlers = 0;
-}
-
-/*
- * A general work queue. Perform some task before the server
- * sleeps for input.
- */
-
-WorkQueuePtr workQueue;
-static WorkQueuePtr *workQueueLast = &workQueue;
-
-void
-ProcessWorkQueue()
-{
- WorkQueuePtr q, *p;
-
- p = &workQueue;
- /*
- * Scan the work queue once, calling each function. Those
- * which return TRUE are removed from the queue, otherwise
- * they will be called again. This must be reentrant with
- * QueueWorkProc.
- */
- while (q = *p)
- {
- if ((*q->function) (q->client, q->closure))
- {
- /* remove q from the list */
- *p = q->next; /* don't fetch until after func called */
- xfree (q);
- }
- else
- {
- p = &q->next; /* don't fetch until after func called */
- }
- }
- workQueueLast = p;
-}
-
-void
-ProcessWorkQueueZombies()
-{
- WorkQueuePtr q, *p;
-
- p = &workQueue;
- while (q = *p)
- {
- 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 */
- xfree (q);
- }
- else
- {
- p = &q->next; /* don't fetch until after func called */
- }
- }
- workQueueLast = p;
-}
-
-Bool
-#if NeedFunctionPrototypes
-QueueWorkProc (
- Bool (*function)(
-#if NeedNestedPrototypes
- ClientPtr /* pClient */,
- pointer /* closure */
-#endif
- ),
- ClientPtr client,
- pointer closure)
-#else
-QueueWorkProc (function, client, closure)
- Bool (*function)();
- ClientPtr client;
- pointer closure;
-#endif
-{
- WorkQueuePtr q;
-
- q = (WorkQueuePtr) xalloc (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 (client, function, closure)
- ClientPtr client;
- ClientSleepProcPtr function;
- pointer closure;
-{
- SleepQueuePtr q;
-
- q = (SleepQueuePtr) xalloc (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 (client)
- 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 (client)
- ClientPtr client;
-{
- SleepQueuePtr q, *prev;
-
- prev = &sleepQueue;
- while ( (q = *prev) )
- {
- if (q->client == client)
- {
- *prev = q->next;
- xfree (q);
- if (client->clientGone)
- CloseDownClient(client);
- else
- AttendClient (client);
- break;
- }
- prev = &q->next;
- }
-}
-
-Bool
-ClientIsAsleep (client)
- 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
-#if NeedFunctionPrototypes
-_AddCallback(
- CallbackListPtr *pcbl,
- CallbackProcPtr callback,
- pointer data)
-#else
-_AddCallback(pcbl, callback, data)
- CallbackListPtr *pcbl;
- CallbackProcPtr callback;
- pointer data;
-#endif
-{
- CallbackPtr cbr;
-
- cbr = (CallbackPtr) xalloc(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
-#if NeedFunctionPrototypes
-_DeleteCallback(
- CallbackListPtr *pcbl,
- CallbackProcPtr callback,
- pointer data)
-#else
-_DeleteCallback(pcbl, callback, data)
- CallbackListPtr *pcbl;
- CallbackProcPtr callback;
- pointer data;
-#endif
-{
- 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;
- xfree(cbr);
- }
- return TRUE;
- }
- return FALSE;
-}
-
-static void
-#if NeedFunctionPrototypes
-_CallCallbacks(
- CallbackListPtr *pcbl,
- pointer call_data)
-#else
-_CallCallbacks(pcbl, call_data)
- CallbackListPtr *pcbl;
- pointer call_data;
-#endif
-{
- 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;
- xfree(pcbr->next);
- pcbr->next = cbr;
- } else
- {
- cbr = cbr->next;
- xfree(cbl->list);
- cbl->list = cbr;
- }
- cbl->numDeleted--;
- }
- else /* this one wasn't deleted */
- {
- pcbr = cbr;
- cbr = cbr->next;
- }
- }
- }
-}
-
-static void
-#if NeedFunctionPrototypes
-_DeleteCallbackList(
- CallbackListPtr *pcbl)
-#else
-_DeleteCallbackList(pcbl)
- CallbackListPtr *pcbl;
-#endif
-{
- 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) != 0)
- {
- listsToCleanup[i] = NULL;
- break;
- }
- }
-
- for (cbr = cbl->list; cbr != NULL; cbr = nextcbr)
- {
- nextcbr = cbr->next;
- xfree(cbr);
- }
- xfree(cbl);
- *pcbl = NULL;
-}
-
-static CallbackFuncsRec default_cbfuncs =
-{
- _AddCallback,
- _DeleteCallback,
- _CallCallbacks,
- _DeleteCallbackList
-};
-
-/* ===== Public Procedures ===== */
-
-Bool
-CreateCallbackList(pcbl, cbfuncs)
- CallbackListPtr *pcbl;
- CallbackFuncsPtr cbfuncs;
-{
- CallbackListPtr cbl;
- int i;
-
- if (!pcbl) return FALSE;
- cbl = (CallbackListPtr) xalloc(sizeof(CallbackListRec));
- if (!cbl) return FALSE;
- cbl->funcs = cbfuncs ? *cbfuncs : default_cbfuncs;
- 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;
-}
-
-Bool
-AddCallback(pcbl, callback, data)
- CallbackListPtr *pcbl;
- CallbackProcPtr callback;
- pointer data;
-{
- if (!pcbl) return FALSE;
- if (!*pcbl)
- { /* list hasn't been created yet; go create it */
- if (!CreateCallbackList(pcbl, (CallbackFuncsPtr)NULL))
- return FALSE;
- }
- return ((*(*pcbl)->funcs.AddCallback) (pcbl, callback, data));
-}
-
-Bool
-DeleteCallback(pcbl, callback, data)
- CallbackListPtr *pcbl;
- CallbackProcPtr callback;
- pointer data;
-{
- if (!pcbl || !*pcbl) return FALSE;
- return ((*(*pcbl)->funcs.DeleteCallback) (pcbl, callback, data));
-}
-
-void
-CallCallbacks(pcbl, call_data)
- CallbackListPtr *pcbl;
- pointer call_data;
-{
- if (!pcbl || !*pcbl) return;
- (*(*pcbl)->funcs.CallCallbacks) (pcbl, call_data);
-}
-
-void
-DeleteCallbackList(pcbl)
- CallbackListPtr *pcbl;
-{
- if (!pcbl || !*pcbl) return;
- (*(*pcbl)->funcs.DeleteCallbackList) (pcbl);
-}
-
-void
-InitCallbackManager()
-{
- int i;
-
- for (i = 0; i < numCallbackListsToCleanup; i++)
- {
- DeleteCallbackList(listsToCleanup[i]);
- }
- if (listsToCleanup) xfree(listsToCleanup);
-
- numCallbackListsToCleanup = 0;
- listsToCleanup = NULL;
-}
projects / rdpsrv / blobdiff