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69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
/* Copyright Massachusetts Institute of Technology 1985 */
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/*
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Copyright 1985, 1986, 1987 by the Massachusetts Institute of Technology
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Permission to use, copy, modify, and distribute this
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software and its documentation for any purpose and without
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fee is hereby granted, provided that the above copyright
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notice appear in all copies and that both that copyright
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notice and this permission notice appear in supporting
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documentation, and that the name of M.I.T. not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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M.I.T. makes no representations about the suitability of
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this software for any purpose. It is provided "as is"
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without express or implied warranty.
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*/
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#include "XMenuInt.h"
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/*
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* XDeleteAssoc - Delete an association in an XAssocTable keyed on
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* an XId. An association may be removed only once. Redundant
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* deletes are meaningless (but cause no problems).
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*/
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void
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XDeleteAssoc(register Display *dpy, register XAssocTable *table, register XID x_id)
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{
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int hash;
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register XAssoc *bucket;
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register XAssoc *Entry;
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/* Hash the XId to get the bucket number. */
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hash = x_id & (table->size - 1);
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/* Look up the bucket to get the entries in that bucket. */
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bucket = &table->buckets[hash];
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/* Get the first entry in the bucket. */
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Entry = bucket->next;
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/* Scan through the entries in the bucket for the right XId. */
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for (; Entry != bucket; Entry = Entry->next) {
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if (Entry->x_id == x_id) {
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/* We have the right XId. */
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if (Entry->display == dpy) {
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/* We have the right display. */
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/* We have the right entry! */
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/* Remove it from the queue and */
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/* free the entry. */
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emacs_remque((struct qelem *)Entry);
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free((char *)Entry);
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return;
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}
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/* Oops, identical XId's on different displays! */
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continue;
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}
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if (Entry->x_id > x_id) {
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/* We have gone past where it should be. */
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/* It is apparently not in the table. */
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return;
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}
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}
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/* It is apparently not in the table. */
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return;
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}
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