-/* Copyright (C) 2001-2004 Bart Massey and Jamey Sharp.
+/* 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"),
/* 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 "extensions/xc_misc.h"
+#include "xc_misc.h"
/* Public interface */
-CARD32 XCBGenerateID(XCBConnection *c)
+uint32_t xcb_generate_id(xcb_connection_t *c)
{
- CARD32 ret;
+ uint32_t ret;
if(c->has_error)
return -1;
pthread_mutex_lock(&c->xid.lock);
- if(c->xid.last == c->xid.max)
+ if(c->xid.last >= c->xid.max - c->xid.inc + 1)
{
- XCBXCMiscGetXIDRangeRep *range;
- range = XCBXCMiscGetXIDRangeReply(c, XCBXCMiscGetXIDRange(c), 0);
- if(!range)
- {
- pthread_mutex_unlock(&c->xid.lock);
- return -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);
}
- 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;
- c->xid.last += c->xid.inc;
pthread_mutex_unlock(&c->xid.lock);
return ret;
}
/* Private interface */
-int _xcb_xid_init(XCBConnection *c)
+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.max = c->setup->resource_id_mask;
c->xid.inc = c->setup->resource_id_mask & -(c->setup->resource_id_mask);
return 1;
}
-void _xcb_xid_destroy(XCBConnection *c)
+void _xcb_xid_destroy(xcb_connection_t *c)
{
pthread_mutex_destroy(&c->xid.lock);
}