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kludgily hand-merged xid fixes 

Signed-off-by: Bart Massey <bart@cs.pdx.edu>
Signed-off-by: Julien Danjou <julien@danjou.info>
This commit is contained in:
Bart Massey 2009-03-24 16:24:04 -07:00 committed by Julien Danjou
parent 1e9c0f1012
commit beccb0be15
1 changed files with 32 additions and 12 deletions
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44
src/xcb_xid.c
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@ -1,4 +1,4 @@
/* 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"),
@ -25,6 +25,7 @@
/* XID allocators. */
#include <assert.h>
#include <stdlib.h>
#include "xcb.h"
#include "xcbext.h"
@ -39,21 +40,40 @@ uint32_t xcb_generate_id(xcb_connection_t *c)
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)
{
xcb_xc_misc_get_xid_range_reply_t *range;
range = xcb_xc_misc_get_xid_range_reply(c, xcb_xc_misc_get_xid_range(c), 0);
if(!range)
{
pthread_mutex_unlock(&c->xid.lock);
return -1;
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;
}
@ -65,8 +85,8 @@ 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;
}