88 lines
2.5 KiB
C
88 lines
2.5 KiB
C
/* Copyright (C) 2005 Bart Massey and Jamey Sharp.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the names of the authors or their
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* institutions shall not be used in advertising or otherwise to promote the
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* sale, use or other dealings in this Software without prior written
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* authorization from the authors.
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*/
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#include "xcbxlib.h"
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#include "xcbint.h"
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#include <assert.h>
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#ifdef HAVE_BACKTRACE
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#include <execinfo.h>
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#include <stdio.h>
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#include <stdlib.h>
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#endif
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static void xcb_xlib_printbt(void)
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{
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#ifdef HAVE_BACKTRACE
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void *array[20];
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int size;
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char **strings;
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int i;
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size = backtrace(array, 20);
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strings = backtrace_symbols(array, size);
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fprintf(stderr, "Locking assertion failure. Backtrace:\n");
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for (i = 0; i < size; ++i)
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fprintf(stderr, "#%i %s\n", i, strings[i]);
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free(strings);
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#endif
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}
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#ifndef NDEBUG
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#define xcb_assert(c,x) do { if (!(x)) { xcb_xlib_printbt(); if (!(c)->xlib.sloppy_lock) assert(x); } } while(0)
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#else
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#define xcb_assert(c,x)
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#endif
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unsigned int xcb_get_request_sent(xcb_connection_t *c)
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{
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if(c->has_error)
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return 0;
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return c->out.request;
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}
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void xcb_xlib_lock(xcb_connection_t *c)
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{
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_xcb_lock_io(c);
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xcb_assert(c, !c->xlib.lock);
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c->xlib.lock = 1;
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c->xlib.thread = pthread_self();
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_xcb_unlock_io(c);
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}
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void xcb_xlib_unlock(xcb_connection_t *c)
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{
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_xcb_lock_io(c);
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xcb_assert(c, c->xlib.lock);
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xcb_assert(c, pthread_equal(c->xlib.thread, pthread_self()));
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c->xlib.lock = 0;
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pthread_cond_broadcast(&c->xlib.cond);
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_xcb_unlock_io(c);
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}
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