1 /* Copyright (C) 2001-2004 Bart Massey and Jamey Sharp.
3 * Permission is hereby granted, free of charge, to any person obtaining a
4 * copy of this software and associated documentation files (the "Software"),
5 * to deal in the Software without restriction, including without limitation
6 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
7 * and/or sell copies of the Software, and to permit persons to whom the
8 * Software is furnished to do so, subject to the following conditions:
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
17 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
18 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 * Except as contained in this notice, the names of the authors or their
21 * institutions shall not be used in advertising or otherwise to promote the
22 * sale, use or other dealings in this Software without prior written
23 * authorization from the authors.
32 #include "extensions/xc_misc.h"
34 /* Public interface */
36 CARD32 XCBGenerateID(XCBConnection *c)
39 pthread_mutex_lock(&c->xid.lock);
40 if(c->xid.last == c->xid.max)
42 XCBXCMiscGetXIDRangeRep *range;
43 range = XCBXCMiscGetXIDRangeReply(c, XCBXCMiscGetXIDRange(c), 0);
46 pthread_mutex_unlock(&c->xid.lock);
49 c->xid.last = range->start_id;
50 c->xid.max = range->start_id + (range->count - 1) * c->xid.inc;
53 ret = c->xid.last | c->xid.base;
54 c->xid.last += c->xid.inc;
55 pthread_mutex_unlock(&c->xid.lock);
59 /* Private interface */
61 int _xcb_xid_init(XCBConnection *c)
63 if(pthread_mutex_init(&c->xid.lock, 0))
66 c->xid.base = c->setup->resource_id_base;
67 c->xid.max = c->setup->resource_id_mask;
68 c->xid.inc = c->setup->resource_id_mask & -(c->setup->resource_id_mask);
72 void _xcb_xid_destroy(XCBConnection *c)
74 pthread_mutex_destroy(&c->xid.lock);