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Jonathan Schleifer 2014-05-14 23:20:55 +02:00
commit 3be483a237
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/*
* Copyright (c) 2014, Jonathan Schleifer <js@webkeks.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include "trycatch.h"
#ifndef TRYCATCH_THREAD_LOCAL
# define TRYCATCH_THREAD_LOCAL
#endif
static TRYCATCH_THREAD_LOCAL struct trycatch_frame *trycatch_frames = NULL;
struct trycatch_frame*
trycatch_frame_push()
{
struct trycatch_frame *frame;
if ((frame = malloc(sizeof(*frame))) == NULL) {
fputs("Not enough memory to allocate exception frame!\n",
stderr);
abort();
}
frame->prev = trycatch_frames;
trycatch_frames = frame;
return frame;
}
void
trycatch_frame_pop()
{
struct trycatch_frame *frame = trycatch_frames;
trycatch_frames = frame->prev;
free(frame);
}
void _Noreturn
trycatch_throw(int ex)
{
if (trycatch_frames == NULL) {
fputs("Exception with no handler!\n", stderr);
abort();
}
longjmp(*trycatch_frames->jmpbuf, ex);
}