83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
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/*
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crashhandler.c - advanced crashhandler
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Copyright (C) 2016 Mittorn
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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 the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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*/
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// on Glibc (which potentially might not be only Linux) systems we
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// have backtrace() and backtrace_symbols() calls, which replace for us
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// platform-specific code
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#if HAVE_EXECINFO
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#include "common.h"
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#include <execinfo.h>
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#include <signal.h>
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void Sys_Crash( int signal, siginfo_t *si, void *context )
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{
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char message[8192];
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int len, logfd, i = 0;
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int size;
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void *addrs[16];
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char **syms;
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// safe actions first, stack and memory may be corrupted
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len = Q_snprintf( message, sizeof( message ), "Ver: " XASH_ENGINE_NAME " " XASH_VERSION " (build %i-%s, %s-%s)\n",
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Q_buildnum(), g_buildcommit, Q_buildos(), Q_buildarch() );
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#if !XASH_FREEBSD && !XASH_NETBSD && !XASH_OPENBSD
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len += Q_snprintf( message + len, sizeof( message ) - len, "Crash: signal %d errno %d with code %d at %p %p\n", signal, si->si_errno, si->si_code, si->si_addr, si->si_ptr );
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#else
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len += Q_snprintf( message + len, sizeof( message ) - len, "Crash: signal %d errno %d with code %d at %p\n", signal, si->si_errno, si->si_code, si->si_addr );
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#endif
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write( STDERR_FILENO, message, len );
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// flush buffers before writing directly to descriptors
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fflush( stdout );
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fflush( stderr );
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// now get log fd and write trace directly to log
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logfd = Sys_LogFileNo();
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write( logfd, message, len );
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size = backtrace( addrs, sizeof( addrs ) / sizeof( addrs[0] ));
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syms = backtrace_symbols( addrs, size );
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for( i = 0; i < size && syms; i++ )
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{
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size_t symlen = Q_strlen( syms[i] );
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char ch = '\n';
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write( logfd, syms[i], symlen );
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write( logfd, &ch, 1 );
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len += Q_snprintf( message + len, sizeof( message ) - len, "%2d: %s\n", i, syms[i] );
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}
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// put MessageBox as Sys_Error
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Msg( "%s\n", message );
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#ifdef XASH_SDL
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SDL_SetWindowGrab( host.hWnd, SDL_FALSE );
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#endif
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host.crashed = true;
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Platform_MessageBox( "Xash Error", message, false );
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// log saved, now we can try to save configs and close log correctly, it may crash
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if( host.type == HOST_NORMAL )
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CL_Crashed();
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host.status = HOST_CRASHED;
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Sys_Quit( "crashed" );
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}
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#endif // HAVE_EXECINFO
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