/*
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* Copyright (C) 2011 Philippe Gerum <rpm@xenomai.org>.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*/
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#ifndef _BOILERPLATE_DEBUG_H
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#define _BOILERPLATE_DEBUG_H
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#include <stdint.h>
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#include <stddef.h>
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#include <xeno_config.h>
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#ifdef CONFIG_XENO_DEBUG
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#include <pthread.h>
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#include <boilerplate/compiler.h>
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static inline int must_check(void)
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{
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return 1;
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}
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struct error_frame {
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int retval;
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int lineno;
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const char *fn;
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const char *file;
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struct error_frame *next;
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};
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struct backtrace_data {
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const char *name;
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struct error_frame *inner;
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pthread_mutex_t lock;
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char eundef[16];
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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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void backtrace_init_context(struct backtrace_data *btd,
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const char *name);
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void backtrace_destroy_context(struct backtrace_data *btd);
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void backtrace_dump(struct backtrace_data *btd);
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void backtrace_log(int retval, const char *fn,
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const char *file, int lineno);
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void backtrace_check(void);
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void __debug(const char *name, const char *fmt, ...);
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char *__get_error_buf(size_t *sizep);
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void debug_init(void);
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#ifdef __cplusplus
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}
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#endif
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#define __bt(__exp) \
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({ \
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typeof(__exp) __ret = (__exp); \
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if (__ret < 0) \
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backtrace_log((int)__ret, __FUNCTION__, \
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__FILE__, __LINE__); \
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__ret; \
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})
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#define __bterrno(__exp) \
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({ \
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typeof(__exp) __ret = (__exp); \
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if (__ret < 0) \
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backtrace_log(-errno, __FUNCTION__, \
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__FILE__, __LINE__); \
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__ret; \
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})
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#else /* !CONFIG_XENO_DEBUG */
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static inline int must_check(void)
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{
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return 0;
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}
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struct backtrace_data {
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};
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#define __bt(__exp) (__exp)
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#define __bterrno(__exp) (__exp)
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#define backtrace_init_context(btd, name) \
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do { (void)(btd); (void)(name); } while (0)
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#define backtrace_destroy_context(btd) \
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do { (void)(btd); } while (0)
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#define backtrace_dump(btd) \
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do { (void)(btd); } while (0)
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#define backtrace_check() \
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do { } while (0)
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/*
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* XXX: We have no thread-private backtrace context in non-debug mode,
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* so there is a potential race if multiple threads want to write to
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* this buffer. This looks acceptable though, since this is primarily
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* a debug feature, and the race won't damage the system anyway.
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*/
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#define __get_error_buf(sizep) \
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({ \
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static char __buf[16]; \
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*(sizep) = sizeof(__buf); \
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__buf; \
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})
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#define debug_init() do { } while (0)
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#endif /* !CONFIG_XENO_DEBUG */
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static inline int bad_pointer(const void *ptr)
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{
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return ptr == NULL ||
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((intptr_t)ptr & (intptr_t)(sizeof(intptr_t)-1)) != 0;
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}
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#endif /* _BOILERPLATE_DEBUG_H */
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