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-rw-r--r--libXmu/src/DisplayQue.c385
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;
+}