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libcommon: add common debugging routines 

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
This commit is contained in:
Ondrej Oprala 2014-03-11 11:27:13 +01:00
parent 5a1b4999f7
commit db08389d87
2 changed files with 71 additions and 0 deletions
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1
include/Makemodule.am
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@ -12,6 +12,7 @@ dist_noinst_HEADERS += \
include/cpuset.h \
include/crc32.h \
include/crc64.h \
include/debug.h \
include/env.h \
include/exec_shell.h \
include/exitcodes.h \

70
include/debug.h Normal file
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@ -0,0 +1,70 @@
/*
* Copyright (C) 2014 Ondrej Oprala <ooprala@redhat.com>
*
* This file may be distributed under the terms of the
* GNU Lesser General Public License.
*/
#ifndef UTIL_LINUX_DEBUG_H
#define UTIL_LINUX_DEBUG_H
#define _UL_DEBUG
#ifdef _UL_DEBUG
#include <stdarg.h>
# define __UL_DBG(l, p, m, x) \
do { \
if ((p ## m) & l ## _debug_mask) { \
fprintf(stderr, "%d: %s: %8s: ", getpid(), # l, # m); \
x; \
} \
} while (0)
#define __UL_INIT_DEBUG(lib, pref, mask, env) do { \
if (lib ## _debug_mask & pref ## INIT) \
; \
else if (!mask) { \
char *str = getenv(# env); \
if (str) \
lib ## _debug_mask = strtoul(str, 0, 0); \
} else \
lib ## _debug_mask = mask; \
lib ## _debug_mask |= pref ## INIT; \
if (lib ## _debug_mask != pref ## INIT) { \
const char *ver = NULL; \
__UL_DBG(lib, pref, INIT, ul_debug("library debug mask: 0x%04x", \
lib ## _debug_mask)); \
/* ul_get_library_version(&ver); \
__UL_DBG(lib, pref, INIT, ul_debug("library version: %s", ver));*/ \
} \
} while (0)
static inline void __attribute__ ((__format__ (__printf__, 1, 2)))
ul_debug(const char *mesg, ...)
{
va_list ap;
va_start(ap, mesg);
vfprintf(stderr, mesg, ap);
va_end(ap);
fputc('\n', stderr);
}
static inline void __attribute__ ((__format__ (__printf__, 2, 3)))
ul_debugobj(void *handler, const char *mesg, ...)
{
va_list ap;
if (handler)
fprintf(stderr, "[%p]: ", handler);
va_start(ap, mesg);
vfprintf(stderr, mesg, ap);
va_end(ap);
fputc('\n', stderr);
}
#else /* !_UL_DEBUG */
# define __UL_DBG(l, p, m, x) do { ; } while (0)
#define __UL_INIT_DEBUG(lib, pref, mask, env) do { ; } while (0)
#endif
#endif /* UTIL_LINUX_DEBUG_H */