184 lines
4.1 KiB
C
184 lines
4.1 KiB
C
/***************************************************************************
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gb_error_common.h
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(c) 2000-2017 Benoît Minisini <g4mba5@gmail.com>
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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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#ifndef __GB_ERROR_COMMON_H
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#define __GB_ERROR_COMMON_H
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typedef
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struct {
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char code; // Error code
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char native; // A native method has raised an error
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char free; // If 'msg' sould be freed
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char _reserved;
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void *cp;
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void *fp;
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void *pc;
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char *msg;
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}
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ERROR_INFO;
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typedef
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struct _ERROR_CONTEXT {
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struct _ERROR_CONTEXT *prev;
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struct _ERROR_HANDLER *handler;
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ERROR_INFO info;
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jmp_buf env;
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char ret;
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}
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ERROR_CONTEXT;
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typedef
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struct _ERROR_HANDLER {
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struct _ERROR_HANDLER *prev;
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ERROR_CONTEXT *context;
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void (*handler)();
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intptr_t arg1;
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intptr_t arg2;
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}
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ERROR_HANDLER;
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#ifdef NO_ERROR_HANDLER
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#define ERROR_handler NULL
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#endif
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#define ERROR_LEAVE_DONE ((ERROR_CONTEXT *)-1)
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#if DEBUG_ERROR
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#define TRY \
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{ \
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ERROR_CONTEXT __err_context; \
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{ \
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ERROR_debug("TRY %s %p\n", __FUNCTION__, &__err_context); \
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ERROR_depth++; \
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ERROR_enter(&__err_context); \
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__err_context.ret = setjmp(__err_context.env); \
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if (__err_context.ret == 0)
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/*#define CATCH \
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fprintf(stderr, "%p == %p ? %d\n", ERROR_current, __err, __err->ret); \
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if (__err->ret != 0 && (__err->ret = 2))*/
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#define CATCH \
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if (__err_context.ret) { ERROR_depth--; ERROR_debug("CATCH %s %p\n", __FUNCTION__, &__err_context); ERROR_depth++; } \
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if (__err_context.ret)
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#define END_TRY \
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ERROR_depth--; \
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ERROR_debug("END TRY %s %p\n", __FUNCTION__, &__err_context); \
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ERROR_depth++; \
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ERROR_leave(&__err_context); \
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} \
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}
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#define PROPAGATE() fprintf(stderr, "PROPAGATE %s\n", __FUNCTION__), ERROR_propagate()
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#define ERROR_enter(_err) \
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do { \
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(_err)->prev = ERROR_current; \
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(_err)->info.code = 0; \
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(_err)->info.native = 0; \
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(_err)->handler = ERROR_handler; \
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ERROR_current = (_err); \
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} while(0)
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#define ERROR_leave(_err) \
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do { \
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ERROR_CONTEXT *_prev = (_err); \
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ERROR_depth--; \
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if (_prev->prev != ERROR_LEAVE_DONE) \
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{ \
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ERROR_current = _prev->prev; \
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if (ERROR_current) \
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{ \
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if (_prev->info.code) \
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{ \
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ERROR_reset(&ERROR_current->info); \
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ERROR_current->info = _prev->info; \
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} \
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} \
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else \
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ERROR_reset(&_prev->info); \
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_prev->prev = ERROR_LEAVE_DONE; \
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} \
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} while(0)
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#else /* DEBUG_ERROR */
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#define TRY \
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{ \
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ERROR_CONTEXT __err_context; \
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{ \
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ERROR_CONTEXT *__err = &__err_context; \
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ERROR_enter(__err); \
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__err->ret = setjmp(__err->env); \
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if (__err->ret == 0)
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#define CATCH \
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else
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#define END_TRY \
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ERROR_leave(__err); \
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} \
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}
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#define PROPAGATE() ERROR_propagate()
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#define ERROR_enter(_err) \
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do { \
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_err->prev = ERROR_current; \
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_err->info.code = 0; \
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_err->info.native = 0; \
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_err->handler = ERROR_handler; \
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ERROR_current = _err; \
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} while(0)
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#define ERROR_leave(_err) \
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do { \
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ERROR_CONTEXT *_prev = (_err); \
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if (_prev->prev != ERROR_LEAVE_DONE) \
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{ \
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ERROR_current = _prev->prev; \
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if (ERROR_current) \
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{ \
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if (_prev->info.code) \
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{ \
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ERROR_reset(&ERROR_current->info); \
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ERROR_current->info = _prev->info; \
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ERROR_current->info.native = FALSE; \
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} \
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} \
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else \
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ERROR_reset(&_prev->info); \
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_prev->prev = ERROR_LEAVE_DONE; \
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} \
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} while(0)
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#endif
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#define ERROR (&__err_context)
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#define ERROR_in_catch(_err) ((_err)->ret)
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#endif
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