2fbf67cb29
* NEW: Update FSF address in every source file. git-svn-id: svn://localhost/gambas/trunk@3870 867c0c6c-44f3-4631-809d-bfa615b0a4ec
106 lines
2.2 KiB
C
106 lines
2.2 KiB
C
/***************************************************************************
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gb_common.c
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(c) 2000-2011 Benoît Minisini <gambas@users.sourceforge.net>
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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 2, or (at your option)
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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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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,
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MA 02110-1301, USA.
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***************************************************************************/
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#define __COMMON_C
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#define __COMMON_CHECK_C
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#include "gb_common.h"
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#include "gb_common_check.h"
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#include "gb_common_case_temp.h"
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#include "gb_common_buffer_temp.h"
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#include "gb_common_swap_temp.h"
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sigjmp_buf CHECK_jump;
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static sighandler_t _oldsegv;
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static sighandler_t _oldbus;
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static int _dummy;
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static volatile int _got_error;
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void COMMON_init(void)
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{
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}
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static void signal_error()
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{
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_got_error = TRUE;
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siglongjmp(CHECK_jump, 1);
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}
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void CHECK_enter(void)
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{
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_got_error = FALSE;
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_oldsegv = signal(SIGSEGV, signal_error);
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_oldbus = signal(SIGBUS, signal_error);
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}
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void CHECK_leave(void)
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{
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signal(SIGSEGV, _oldsegv);
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signal(SIGBUS, _oldbus);
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}
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bool CHECK_got_error(void)
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{
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return _got_error;
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}
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bool CHECK_address(void *ptr, size_t len)
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{
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offset_t i;
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if (len < 0)
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return TRUE;
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CHECK_enter();
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if (sigsetjmp(CHECK_jump, TRUE) == 0)
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{
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for (i = 0; i < len; i += 1024)
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_dummy = ((int *)ptr)[i];
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_dummy = ((int *)ptr)[len >> 2];
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}
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CHECK_leave();
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return _got_error;
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}
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bool CHECK_strlen(char *ptr, size_t *len)
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{
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size_t l = 0;
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CHECK_enter();
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if (sigsetjmp(CHECK_jump, TRUE) == 0)
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{
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l = strlen(ptr);
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*len = l;
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}
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CHECK_leave();
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if (l != (size_t)(int)l)
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_got_error = TRUE;
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return _got_error;
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}
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