diff options
Diffstat (limited to 'libXmu/src/DisplayQue.c')
| -rw-r--r-- | libXmu/src/DisplayQue.c | 385 |
1 files changed, 191 insertions, 194 deletions
diff --git a/libXmu/src/DisplayQue.c b/libXmu/src/DisplayQue.c index ae9f92e1d..fadefcc84 100644 --- a/libXmu/src/DisplayQue.c +++ b/libXmu/src/DisplayQue.c @@ -1,194 +1,191 @@ -/* $Xorg: DisplayQue.c,v 1.4 2001/02/09 02:03:52 xorgcvs Exp $ */ - -/* - -Copyright 1989, 1998 The Open Group - -Permission to use, copy, modify, distribute, and sell this software and its -documentation for any purpose is hereby granted without fee, provided that -the above copyright notice appear in all copies and that both that -copyright notice and this permission notice appear in supporting -documentation. - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN -AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN -CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - -Except as contained in this notice, the name of The Open Group shall not be -used in advertising or otherwise to promote the sale, use or other dealings -in this Software without prior written authorization from The Open Group. - -*/ -/* $XFree86: xc/lib/Xmu/DisplayQue.c,v 3.4 2001/07/25 15:04:50 dawes Exp $ */ - -/* - * Author: Jim Fulton, MIT X Consortium - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include <stdio.h> -#include <X11/Xlib.h> -#include <stdlib.h> -#include <X11/Xmu/DisplayQue.h> - -/* - * Prototypes - */ -static int _DQCloseDisplay(Display*, XPointer); - -#define CallCloseCallback(q,e) (void) (*((q)->closefunc)) ((q), (e)) -#define CallFreeCallback(q) (void) (*((q)->freefunc)) ((q)) - -/* - * XmuDQCreate - create a display queue - */ -XmuDisplayQueue * -XmuDQCreate(XmuCloseDisplayQueueProc closefunc, - XmuFreeDisplayQueueProc freefunc, - XPointer data) -{ - XmuDisplayQueue *q = (XmuDisplayQueue *) malloc (sizeof (XmuDisplayQueue)); - if (q) { - q->nentries = 0; - q->head = q->tail = NULL; - q->closefunc = closefunc; - q->freefunc = freefunc; - q->data = data; - } - return q; -} - - -/* - * XmuDQDestroy - free all storage associated with this display queue, - * optionally invoking the close callbacks. - */ - -Bool -XmuDQDestroy(XmuDisplayQueue *q, Bool docallbacks) -{ - XmuDisplayQueueEntry *e = q->head; - - while (e) { - XmuDisplayQueueEntry *nexte = e->next; - if (docallbacks && q->closefunc) CallCloseCallback (q, e); - free ((char *) e); - e = nexte; - } - free ((char *) q); - return True; -} - - -/* - * XmuDQLookupDisplay - finds the indicated display on the given queue - */ -XmuDisplayQueueEntry * -XmuDQLookupDisplay(XmuDisplayQueue *q, Display *dpy) -{ - XmuDisplayQueueEntry *e; - - for (e = q->head; e; e = e->next) { - if (e->display == dpy) return e; - } - return NULL; -} - - -/* - * XmuDQAddDisplay - add the specified display to the queue; set data as a - * convenience. Does not ensure that dpy hasn't already been added. - */ -XmuDisplayQueueEntry * -XmuDQAddDisplay(XmuDisplayQueue *q, Display *dpy, XPointer data) -{ - XmuDisplayQueueEntry *e; - - if (!(e = (XmuDisplayQueueEntry *) malloc (sizeof (XmuDisplayQueueEntry)))) { - return NULL; - } - if (!(e->closehook = XmuAddCloseDisplayHook (dpy, _DQCloseDisplay, - (XPointer) q))) { - free ((char *) e); - return NULL; - } - - e->display = dpy; - e->next = NULL; - e->data = data; - - if (q->tail) { - q->tail->next = e; - e->prev = q->tail; - } else { - q->head = e; - e->prev = NULL; - } - q->tail = e; - q->nentries++; - return e; -} - - -/* - * XmuDQRemoveDisplay - remove the specified display from the queue - */ -Bool -XmuDQRemoveDisplay(XmuDisplayQueue *q, Display *dpy) -{ - XmuDisplayQueueEntry *e; - - for (e = q->head; e; e = e->next) { - if (e->display == dpy) { - if (q->head == e) - q->head = e->next; /* if at head, then bump head */ - else - e->prev->next = e->next; /* else splice out */ - if (q->tail == e) - q->tail = e->prev; /* if at tail, then bump tail */ - else - e->next->prev = e->prev; /* else splice out */ - (void) XmuRemoveCloseDisplayHook (dpy, e->closehook, - _DQCloseDisplay, (XPointer) q); - free ((char *) e); - q->nentries--; - return True; - } - } - return False; -} - - -/***************************************************************************** - * private functions * - *****************************************************************************/ - -/* - * _DQCloseDisplay - upcalled from CloseHook to notify this queue; remove the - * display when finished - */ -static int -_DQCloseDisplay(Display *dpy, XPointer arg) -{ - XmuDisplayQueue *q = (XmuDisplayQueue *) arg; - XmuDisplayQueueEntry *e; - - for (e = q->head; e; e = e->next) { - if (e->display == dpy) { - if (q->closefunc) CallCloseCallback (q, e); - (void) XmuDQRemoveDisplay (q, dpy); - if (q->nentries == 0 && q->freefunc) CallFreeCallback (q); - return 1; - } - } - - return 0; -} +/*
+
+Copyright 1989, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+*/
+
+/*
+ * Author: Jim Fulton, MIT X Consortium
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <X11/Xlib.h>
+#include <stdlib.h>
+#include <X11/Xmu/DisplayQue.h>
+
+/*
+ * Prototypes
+ */
+static int _DQCloseDisplay(Display*, XPointer);
+
+#define CallCloseCallback(q,e) (void) (*((q)->closefunc)) ((q), (e))
+#define CallFreeCallback(q) (void) (*((q)->freefunc)) ((q))
+
+/*
+ * XmuDQCreate - create a display queue
+ */
+XmuDisplayQueue *
+XmuDQCreate(XmuCloseDisplayQueueProc closefunc,
+ XmuFreeDisplayQueueProc freefunc,
+ XPointer data)
+{
+ XmuDisplayQueue *q = (XmuDisplayQueue *) malloc (sizeof (XmuDisplayQueue));
+ if (q) {
+ q->nentries = 0;
+ q->head = q->tail = NULL;
+ q->closefunc = closefunc;
+ q->freefunc = freefunc;
+ q->data = data;
+ }
+ return q;
+}
+
+
+/*
+ * XmuDQDestroy - free all storage associated with this display queue,
+ * optionally invoking the close callbacks.
+ */
+
+Bool
+XmuDQDestroy(XmuDisplayQueue *q, Bool docallbacks)
+{
+ XmuDisplayQueueEntry *e = q->head;
+
+ while (e) {
+ XmuDisplayQueueEntry *nexte = e->next;
+ if (docallbacks && q->closefunc) CallCloseCallback (q, e);
+ free ((char *) e);
+ e = nexte;
+ }
+ free ((char *) q);
+ return True;
+}
+
+
+/*
+ * XmuDQLookupDisplay - finds the indicated display on the given queue
+ */
+XmuDisplayQueueEntry *
+XmuDQLookupDisplay(XmuDisplayQueue *q, Display *dpy)
+{
+ XmuDisplayQueueEntry *e;
+
+ for (e = q->head; e; e = e->next) {
+ if (e->display == dpy) return e;
+ }
+ return NULL;
+}
+
+
+/*
+ * XmuDQAddDisplay - add the specified display to the queue; set data as a
+ * convenience. Does not ensure that dpy hasn't already been added.
+ */
+XmuDisplayQueueEntry *
+XmuDQAddDisplay(XmuDisplayQueue *q, Display *dpy, XPointer data)
+{
+ XmuDisplayQueueEntry *e;
+
+ if (!(e = (XmuDisplayQueueEntry *) malloc (sizeof (XmuDisplayQueueEntry)))) {
+ return NULL;
+ }
+ if (!(e->closehook = XmuAddCloseDisplayHook (dpy, _DQCloseDisplay,
+ (XPointer) q))) {
+ free ((char *) e);
+ return NULL;
+ }
+
+ e->display = dpy;
+ e->next = NULL;
+ e->data = data;
+
+ if (q->tail) {
+ q->tail->next = e;
+ e->prev = q->tail;
+ } else {
+ q->head = e;
+ e->prev = NULL;
+ }
+ q->tail = e;
+ q->nentries++;
+ return e;
+}
+
+
+/*
+ * XmuDQRemoveDisplay - remove the specified display from the queue
+ */
+Bool
+XmuDQRemoveDisplay(XmuDisplayQueue *q, Display *dpy)
+{
+ XmuDisplayQueueEntry *e;
+
+ for (e = q->head; e; e = e->next) {
+ if (e->display == dpy) {
+ if (q->head == e)
+ q->head = e->next; /* if at head, then bump head */
+ else
+ e->prev->next = e->next; /* else splice out */
+ if (q->tail == e)
+ q->tail = e->prev; /* if at tail, then bump tail */
+ else
+ e->next->prev = e->prev; /* else splice out */
+ (void) XmuRemoveCloseDisplayHook (dpy, e->closehook,
+ _DQCloseDisplay, (XPointer) q);
+ free ((char *) e);
+ q->nentries--;
+ return True;
+ }
+ }
+ return False;
+}
+
+
+/*****************************************************************************
+ * private functions *
+ *****************************************************************************/
+
+/*
+ * _DQCloseDisplay - upcalled from CloseHook to notify this queue; remove the
+ * display when finished
+ */
+static int
+_DQCloseDisplay(Display *dpy, XPointer arg)
+{
+ XmuDisplayQueue *q = (XmuDisplayQueue *) arg;
+ XmuDisplayQueueEntry *e;
+
+ for (e = q->head; e; e = e->next) {
+ if (e->display == dpy) {
+ if (q->closefunc) CallCloseCallback (q, e);
+ (void) XmuDQRemoveDisplay (q, dpy);
+ if (q->nentries == 0 && q->freefunc) CallFreeCallback (q);
+ return 1;
+ }
+ }
+
+ return 0;
+}
|