DisplayQue.c File Reference

#include <stdio.h>
#include <X11/Xlib.h>
#include <stdlib.h>
#include <X11/Xmu/DisplayQue.h>

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Defines
#define	CallCloseCallback(q, e)   (void) (*((q)->closefunc)) ((q), (e))
#define	CallFreeCallback(q)   (void) (*((q)->freefunc)) ((q))
Functions
static int	_DQCloseDisplay (Display *, XPointer)
XmuDisplayQueue *	XmuDQCreate (XmuCloseDisplayQueueProc closefunc, XmuFreeDisplayQueueProc freefunc, XPointer data)
Bool	XmuDQDestroy (XmuDisplayQueue *q, Bool docallbacks)
XmuDisplayQueueEntry *	XmuDQLookupDisplay (XmuDisplayQueue *q, Display *dpy)
XmuDisplayQueueEntry *	XmuDQAddDisplay (XmuDisplayQueue *q, Display *dpy, XPointer data)
Bool	XmuDQRemoveDisplay (XmuDisplayQueue *q, Display *dpy)

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Define Documentation

#define CallCloseCallback	(	q,
		e		)	(void) (*((q)->closefunc)) ((q), (e))

Definition at line 44 of file DisplayQue.c.

Referenced by _DQCloseDisplay(), and XmuDQDestroy().

#define CallFreeCallback

(

q

)

(void) (*((q)->freefunc)) ((q))

Definition at line 45 of file DisplayQue.c.

Referenced by _DQCloseDisplay().

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Function Documentation

static int _DQCloseDisplay	(	Display *	,
		XPointer
	)			[static]

Definition at line 176 of file DisplayQue.c.

References CallCloseCallback, CallFreeCallback, _XmuDisplayQueue::closefunc, _XmuDisplayQueueEntry::display, _XmuDisplayQueue::head, _XmuDisplayQueueEntry::next, void(), and XmuDQRemoveDisplay().

Referenced by XmuDQAddDisplay(), and XmuDQRemoveDisplay().

{
    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;
}

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XmuDisplayQueueEntry* XmuDQAddDisplay	(	XmuDisplayQueue *	q,
		Display *	dpy,
		XPointer	data
	)

Definition at line 108 of file DisplayQue.c.

References _DQCloseDisplay(), _XmuDisplayQueueEntry::closehook, _XmuDisplayQueueEntry::data, _XmuDisplayQueueEntry::display, free(), malloc(), _XmuDisplayQueueEntry::next, NULL, _XmuDisplayQueueEntry::prev, and XmuAddCloseDisplayHook().

Referenced by _XmuCCLookupDisplay().

{
    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;
}

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XmuDisplayQueue* XmuDQCreate	(	XmuCloseDisplayQueueProc	closefunc,
		XmuFreeDisplayQueueProc	freefunc,
		XPointer	data
	)

Definition at line 51 of file DisplayQue.c.

References _XmuDisplayQueue::closefunc, _XmuDisplayQueue::data, _XmuDisplayQueue::freefunc, _XmuDisplayQueue::head, malloc(), _XmuDisplayQueue::nentries, NULL, and _XmuDisplayQueue::tail.

Referenced by _XmuCCLookupDisplay().

{
    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;
}

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Bool XmuDQDestroy	(	XmuDisplayQueue *	q,
		Bool	docallbacks
	)

Definition at line 73 of file DisplayQue.c.

References CallCloseCallback, _XmuDisplayQueue::closefunc, free(), _XmuDisplayQueue::head, and _XmuDisplayQueueEntry::next.

Referenced by _FreeCCDQ().

{
    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;
}

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XmuDisplayQueueEntry* XmuDQLookupDisplay	(	XmuDisplayQueue *	q,
		Display *	dpy
	)

Definition at line 92 of file DisplayQue.c.

References _XmuDisplayQueueEntry::display, _XmuDisplayQueue::head, _XmuDisplayQueueEntry::next, and NULL.

Referenced by _XmuCCLookupDisplay().

{
    XmuDisplayQueueEntry *e;

    for (e = q->head; e; e = e->next) {
        if (e->display == dpy) return e;
    }
    return NULL;
}

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Bool XmuDQRemoveDisplay	(	XmuDisplayQueue *	q,
		Display *	dpy
	)

Definition at line 142 of file DisplayQue.c.

References _DQCloseDisplay(), _XmuDisplayQueueEntry::closehook, _XmuDisplayQueueEntry::display, free(), _XmuDisplayQueue::head, _XmuDisplayQueueEntry::next, _XmuDisplayQueueEntry::prev, _XmuDisplayQueue::tail, void(), and XmuRemoveCloseDisplayHook().

Referenced by _DQCloseDisplay().

{
    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;
}

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