kopia lustrzana https://gitlab.com/sane-project/frontends
94 wiersze
2.3 KiB
C
94 wiersze
2.3 KiB
C
#ifndef _SANEI_DEBUG_H
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#define _SANEI_DEBUG_H
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#include <sane/sanei.h>
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/* this header file defines:
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*
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* DBG_INIT() - should be called before any other debug function
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* DBG(level, fmt, ...) - prints a message at debug level `level' or higher
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* using a printf-like function
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* IF_DBG(x) - expands to x if debug support is enabled at
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* compile-time, if NDEBUG is defined at compile-time
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* this macro expands to nothing
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*
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* ENTRY(name) - expands to sane_BACKEND_NAME_name
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*
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* before you include sanei_debug.h, you'll have to define
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*
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* BACKEND_NAME - the name of your backend without double-quotes
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* STUBS - if this is defined, nothing will happen
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* DEBUG_DECLARE_ONLY - generate prototypes instead of functions
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* DEBUG_NOT_STATIC - doesn't generate static functions
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*
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*/
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#define ENTRY(name) PASTE(PASTE(PASTE(sane_,BACKEND_NAME),_),name)
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#ifdef NDEBUG
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extern void sanei_debug_ndebug (int level, const char *msg, ...);
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# define DBG_LEVEL (0)
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# define DBG_INIT()
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# define DBG sanei_debug_ndebug
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# define IF_DBG(x)
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#else /* !NDEBUG */
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# define DBG_LEVEL PASTE(sanei_debug_,BACKEND_NAME)
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# if defined(BACKEND_NAME) && !defined(STUBS)
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# ifdef DEBUG_DECLARE_ONLY
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extern int DBG_LEVEL;
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# else /* !DEBUG_DECLARE_ONLY */
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int DBG_LEVEL = 0;
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# endif /* DEBUG_DECLARE_ONLY */
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# endif /* BACKEND_NAME && !STUBS */
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# define DBG_INIT() \
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sanei_init_debug (STRINGIFY(BACKEND_NAME), &DBG_LEVEL)
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# define DBG_LOCAL PASTE(DBG_LEVEL,_call)
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# ifndef STUBS
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# ifdef DEBUG_DECLARE_ONLY
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extern void DBG_LOCAL (int level, const char *msg, ...);
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# else /* !DEBUG_DECLARE_ONLY */
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# include <stdarg.h>
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extern void sanei_debug_msg
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(int level, int max_level, const char *be, const char *fmt, va_list ap);
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# ifndef DEBUG_NOT_STATIC
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static
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# endif /* !DEBUG_NOT_STATIC */
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void
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DBG_LOCAL (int level, const char *msg, ...)
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{
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va_list ap;
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va_start (ap, msg);
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sanei_debug_msg (level, DBG_LEVEL, STRINGIFY(BACKEND_NAME), msg, ap);
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va_end (ap);
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}
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# endif /* DEBUG_NOT_STATIC */
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# endif /* !STUBS */
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# define DBG DBG_LOCAL
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extern void sanei_init_debug (const char * backend, int * debug_level_var);
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# define IF_DBG(x) x
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#endif /* NDEBUG */
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#endif /* _SANEI_DEBUG_H */
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