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-rw-r--r--libxcb/src/xcb_xid.c202
1 files changed, 103 insertions, 99 deletions
diff --git a/libxcb/src/xcb_xid.c b/libxcb/src/xcb_xid.c
index e32306157..7d9fc621b 100644
--- a/libxcb/src/xcb_xid.c
+++ b/libxcb/src/xcb_xid.c
@@ -1,99 +1,103 @@
-/* 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)
-{
- if (!c->xid.lock)
- return; /* mutex was not initialised yet */
- 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. */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#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)
+{
+ if (!c->xid.lock)
+ return; /* mutex was not initialised yet */
+ pthread_mutex_destroy(&c->xid.lock);
+}