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/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
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// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
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COPYING CONDITIONS NOTICE:
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This program is free software; you can redistribute it and/or modify
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it under the terms of version 2 of the GNU General Public License as
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published by the Free Software Foundation, and provided that the
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following conditions are met:
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* Redistributions of source code must retain this COPYING
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CONDITIONS NOTICE, the COPYRIGHT NOTICE (below), the
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DISCLAIMER (below), the UNIVERSITY PATENT NOTICE (below), the
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PATENT MARKING NOTICE (below), and the PATENT RIGHTS
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* Redistributions in binary form must reproduce this COPYING
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CONDITIONS NOTICE, the COPYRIGHT NOTICE (below), the
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DISCLAIMER (below), the UNIVERSITY PATENT NOTICE (below), the
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PATENT MARKING NOTICE (below), and the PATENT RIGHTS
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GRANT (below) in the documentation and/or other materials
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provided with the distribution.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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TokuDB, Tokutek Fractal Tree Indexing Library.
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Copyright (C) 2007-2013 Tokutek, Inc.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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UNIVERSITY PATENT NOTICE:
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The technology is licensed by the Massachusetts Institute of
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Technology, Rutgers State University of New Jersey, and the Research
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Foundation of State University of New York at Stony Brook under
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United States of America Serial No. 11/760379 and to the patents
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and/or patent applications resulting from it.
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PATENT MARKING NOTICE:
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This software is covered by US Patent No. 8,185,551.
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This software is covered by US Patent No. 8,489,638.
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"THIS IMPLEMENTATION" means the copyrightable works distributed by
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Tokutek as part of the Fractal Tree project.
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"PATENT CLAIMS" means the claims of patents that are owned or
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licensable by Tokutek, both currently or in the future; and that in
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the absence of this license would be infringed by THIS
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IMPLEMENTATION or by using or running THIS IMPLEMENTATION.
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"PATENT CHALLENGE" shall mean a challenge to the validity,
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patentability, enforceability and/or non-infringement of any of the
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PATENT CLAIMS or otherwise opposing any of the PATENT CLAIMS.
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Tokutek hereby grants to you, for the term and geographical scope of
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the PATENT CLAIMS, a non-exclusive, no-charge, royalty-free,
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irrevocable (except as stated in this section) patent license to
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make, have made, use, offer to sell, sell, import, transfer, and
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otherwise run, modify, and propagate the contents of THIS
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IMPLEMENTATION, where such license applies only to the PATENT
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CLAIMS. This grant does not include claims that would be infringed
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only as a consequence of further modifications of THIS
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IMPLEMENTATION. If you or your agent or licensee institute or order
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or agree to the institution of patent litigation against any entity
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(including a cross-claim or counterclaim in a lawsuit) alleging that
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THIS IMPLEMENTATION constitutes direct or contributory patent
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infringement, or inducement of patent infringement, then any rights
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granted to you under this License shall terminate as of the date
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such litigation is filed. If you or your agent or exclusive
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licensee institute or order or agree to the institution of a PATENT
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CHALLENGE, then Tokutek may terminate any rights granted to you
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#ident "Copyright (c) 2007-2013 Tokutek Inc. All rights reserved."
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#ifndef PORTABILITY_TOKU_CRASH_H
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#define PORTABILITY_TOKU_CRASH_H
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#include "toku_assert.h"
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//Simulate as hard a crash as possible.
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// kill -SIGKILL $pid
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// assert(false) (from <assert.h>)
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// assert(false) (from <toku_assert.h>)
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// abort() and both assert(false) cause FILE buffers to be flushed and written to disk: Unacceptable
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// None of them cause file buffers to be flushed/written to disk, however
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// abort(), assert(false) <assert.h>, null dereference, and divide by 0 cause popups requiring user intervention during tests: Unacceptable
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//kill -SIGKILL $pid is annoying (and so far untested)
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//raise(SIGABRT) has the downside that perhaps it could be caught?
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//I'm choosing raise(SIGABRT), followed by divide by 0, followed by null dereference, followed by all the others just in case one gets caught.
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static void __attribute__((unused, noreturn))
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toku_hard_crash_on_purpose(void) {
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TerminateProcess(GetCurrentProcess(), 137);
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raise(SIGKILL); //Does not flush buffers on linux; cannot be caught.
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int infinity = 1/zero;
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fprintf(stderr, "Force use of %d\n", infinity);
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fflush(stderr); //Make certain the string is calculated.
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void * intothevoid = NULL;
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(*(int*)intothevoid)++;
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fprintf(stderr, "Force use of *(%p) = %d\n", intothevoid, *(int*)intothevoid);
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fprintf(stderr, "This line should never be printed\n");
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// Similar to toku_hard_crash_on_purpose, but the goal isn't to crash hard, the primary goal is to get a corefile, the secondary goal is to terminate in any way possible.
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// We don't really care if buffers get flushed etc, in fact they may as well flush since there may be useful output in stdout or stderr.
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// By default, the following signals generate cores:
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// Linux, from signal(7):
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// Darwin and FreeBSD, from signal(3):
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// 3 SIGQUIT create core image
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// 4 SIGILL create core image
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// 5 SIGTRAP create core image
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// 6 SIGABRT create core image
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// 7 SIGEMT create core image
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// 8 SIGFPE create core image
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// 10 SIGBUS create core image
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// 11 SIGSEGV create core image
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// 12 SIGSYS create core image
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// We'll raise these in some sequence (common ones first), then try emulating the things that would cause these signals to be raised, then eventually just try to die normally and then loop like abort does.
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// Start with a toku assert because that hopefully prints a stacktrace.
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static void __attribute__((unused, noreturn))
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toku_crash_and_dump_core_on_purpose(void) {
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#if defined(__FreeBSD__) || defined(__APPLE__)
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int infinity = 1/zero;
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fprintf(stderr, "Force use of %d\n", infinity);
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fflush(stderr); //Make certain the string is calculated.
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void * intothevoid = NULL;
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(*(int*)intothevoid)++;
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fprintf(stderr, "Force use of *(%p) = %d\n", intothevoid, *(int*)intothevoid);
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void toku_try_gdb_stack_trace(const char *gdb_path);
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#endif // PORTABILITY_TOKU_CRASH_H