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e745ede7 DL |
1 | /* Copyright Massachusetts Institute of Technology 1985 */ |
2 | ||
0ff3f435 GM |
3 | #include "copyright.h" |
4 | ||
55660072 | 5 | #include "XMenuInt.h" |
e745ede7 DL |
6 | |
7 | /* | |
8 | * XDeleteAssoc - Delete an association in an XAssocTable keyed on | |
9 | * an XId. An association may be removed only once. Redundant | |
10 | * deletes are meaningless (but cause no problems). | |
11 | */ | |
76320384 | 12 | void |
b782e2d7 | 13 | XDeleteAssoc(register Display *dpy, register XAssocTable *table, register XID x_id) |
e745ede7 DL |
14 | { |
15 | int hash; | |
16 | register XAssoc *bucket; | |
17 | register XAssoc *Entry; | |
18 | ||
19 | /* Hash the XId to get the bucket number. */ | |
20 | hash = x_id & (table->size - 1); | |
21 | /* Look up the bucket to get the entries in that bucket. */ | |
22 | bucket = &table->buckets[hash]; | |
23 | /* Get the first entry in the bucket. */ | |
24 | Entry = bucket->next; | |
25 | ||
26 | /* Scan through the entries in the bucket for the right XId. */ | |
27 | for (; Entry != bucket; Entry = Entry->next) { | |
28 | if (Entry->x_id == x_id) { | |
29 | /* We have the right XId. */ | |
30 | if (Entry->display == dpy) { | |
31 | /* We have the right display. */ | |
32 | /* We have the right entry! */ | |
33 | /* Remove it from the queue and */ | |
34 | /* free the entry. */ | |
35 | emacs_remque((struct qelem *)Entry); | |
36 | free((char *)Entry); | |
37 | return; | |
38 | } | |
39 | /* Oops, identical XId's on different displays! */ | |
40 | continue; | |
41 | } | |
42 | if (Entry->x_id > x_id) { | |
43 | /* We have gone past where it should be. */ | |
44 | /* It is apparently not in the table. */ | |
45 | return; | |
46 | } | |
47 | } | |
48 | /* It is apparently not in the table. */ | |
49 | return; | |
50 | } |