diff options
Diffstat (limited to 'libxcb/src/xcb_xid.c')
-rw-r--r-- | libxcb/src/xcb_xid.c | 194 |
1 files changed, 97 insertions, 97 deletions
diff --git a/libxcb/src/xcb_xid.c b/libxcb/src/xcb_xid.c index 3df5dbec6..364662bc1 100644 --- a/libxcb/src/xcb_xid.c +++ b/libxcb/src/xcb_xid.c @@ -1,97 +1,97 @@ -/* Copyright (C) 2001-2008 Bart Massey and Jamey Sharp. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * 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 - * AUTHORS 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 names of the authors or their - * institutions 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 authors. - */ - -/* XID allocators. */ - -#include <assert.h> -#include <stdlib.h> -#include "xcb.h" -#include "xcbext.h" -#include "xcbint.h" -#include "xc_misc.h" - -/* Public interface */ - -uint32_t xcb_generate_id(xcb_connection_t *c) -{ - uint32_t ret; - if(c->has_error) - return -1; - pthread_mutex_lock(&c->xid.lock); - if(c->xid.last >= c->xid.max - c->xid.inc + 1) - { - xcb_xc_misc_get_xid_range_reply_t *range; - assert(c->xid.last == c->xid.max); - if (c->xid.last == 0) { - /* finish setting up initial range */ - c->xid.max = c->setup->resource_id_mask; - } else { - /* check for extension */ - const xcb_query_extension_reply_t *xc_misc_reply = - xcb_get_extension_data(c, &xcb_xc_misc_id); - if (!xc_misc_reply) { - pthread_mutex_unlock(&c->xid.lock); - return -1; - } - /* get new range */ - range = xcb_xc_misc_get_xid_range_reply(c, - xcb_xc_misc_get_xid_range(c), 0); - /* XXX The latter disjunct is what the server returns - when it is out of XIDs. Sweet. */ - if(!range || (range->start_id == 0 && range->count == 1)) - { - pthread_mutex_unlock(&c->xid.lock); - return -1; - } - assert(range->count > 0 && range->start_id > 0); - c->xid.last = range->start_id; - c->xid.max = range->start_id + (range->count - 1) * c->xid.inc; - free(range); - } - } else { - c->xid.last += c->xid.inc; - } - ret = c->xid.last | c->xid.base; - pthread_mutex_unlock(&c->xid.lock); - return ret; -} - -/* Private interface */ - -int _xcb_xid_init(xcb_connection_t *c) -{ - if(pthread_mutex_init(&c->xid.lock, 0)) - return 0; - c->xid.last = 0; - c->xid.max = 0; - c->xid.base = c->setup->resource_id_base; - c->xid.inc = c->setup->resource_id_mask & -(c->setup->resource_id_mask); - return 1; -} - -void _xcb_xid_destroy(xcb_connection_t *c) -{ - pthread_mutex_destroy(&c->xid.lock); -} +/* Copyright (C) 2001-2008 Bart Massey and Jamey Sharp.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * 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
+ * AUTHORS 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 names of the authors or their
+ * institutions 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 authors.
+ */
+
+/* XID allocators. */
+
+#include <assert.h>
+#include <stdlib.h>
+#include "xcb.h"
+#include "xcbext.h"
+#include "xcbint.h"
+#include "xc_misc.h"
+
+/* Public interface */
+
+uint32_t xcb_generate_id(xcb_connection_t *c)
+{
+ uint32_t ret;
+ if(c->has_error)
+ return -1;
+ pthread_mutex_lock(&c->xid.lock);
+ if(c->xid.last >= c->xid.max - c->xid.inc + 1)
+ {
+ xcb_xc_misc_get_xid_range_reply_t *range;
+ assert(c->xid.last == c->xid.max);
+ if (c->xid.last == 0) {
+ /* finish setting up initial range */
+ c->xid.max = c->setup->resource_id_mask;
+ } else {
+ /* check for extension */
+ const xcb_query_extension_reply_t *xc_misc_reply =
+ xcb_get_extension_data(c, &xcb_xc_misc_id);
+ if (!xc_misc_reply) {
+ pthread_mutex_unlock(&c->xid.lock);
+ return -1;
+ }
+ /* get new range */
+ range = xcb_xc_misc_get_xid_range_reply(c,
+ xcb_xc_misc_get_xid_range(c), 0);
+ /* XXX The latter disjunct is what the server returns
+ when it is out of XIDs. Sweet. */
+ if(!range || (range->start_id == 0 && range->count == 1))
+ {
+ pthread_mutex_unlock(&c->xid.lock);
+ return -1;
+ }
+ assert(range->count > 0 && range->start_id > 0);
+ c->xid.last = range->start_id;
+ c->xid.max = range->start_id + (range->count - 1) * c->xid.inc;
+ free(range);
+ }
+ } else {
+ c->xid.last += c->xid.inc;
+ }
+ ret = c->xid.last | c->xid.base;
+ pthread_mutex_unlock(&c->xid.lock);
+ return ret;
+}
+
+/* Private interface */
+
+int _xcb_xid_init(xcb_connection_t *c)
+{
+ if(pthread_mutex_init(&c->xid.lock, 0))
+ return 0;
+ c->xid.last = 0;
+ c->xid.max = 0;
+ c->xid.base = c->setup->resource_id_base;
+ c->xid.inc = c->setup->resource_id_mask & -(c->setup->resource_id_mask);
+ return 1;
+}
+
+void _xcb_xid_destroy(xcb_connection_t *c)
+{
+ pthread_mutex_destroy(&c->xid.lock);
+}
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