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/* Copyright (C) 2005 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.
*/
#include "xcbxlib.h"
#include "xcbint.h"
#include <assert.h>
#ifdef HAVE_BACKTRACE
#include <execinfo.h>
#include <stdio.h>
#include <stdlib.h>
#endif
static void xcb_xlib_printbt(void)
{
#ifdef HAVE_BACKTRACE
void *array[20];
int size;
char **strings;
int i;
size = backtrace(array, 20);
strings = backtrace_symbols(array, size);
fprintf(stderr, "Locking assertion failure. Backtrace:\n");
for (i = 0; i < size; ++i)
fprintf(stderr, "#%i %s\n", i, strings[i]);
free(strings);
#endif
}
#ifndef NDEBUG
#define xcb_assert(c,x) do { if (!(x)) { xcb_xlib_printbt(); if (!(c)->xlib.sloppy_lock) assert(x); } } while(0)
#else
#define xcb_assert(c,x)
#endif
unsigned int xcb_get_request_sent(xcb_connection_t *c)
{
if(c->has_error)
return 0;
return c->out.request;
}
void xcb_xlib_lock(xcb_connection_t *c)
{
_xcb_lock_io(c);
xcb_assert(c, !c->xlib.lock);
c->xlib.lock = 1;
c->xlib.thread = pthread_self();
_xcb_unlock_io(c);
}
void xcb_xlib_unlock(xcb_connection_t *c)
{
_xcb_lock_io(c);
xcb_assert(c, c->xlib.lock);
xcb_assert(c, pthread_equal(c->xlib.thread, pthread_self()));
c->xlib.lock = 0;
pthread_cond_broadcast(&c->xlib.cond);
_xcb_unlock_io(c);
}
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