[lttng-ust.git] / share / usterr.h

#ifndef USTERR_H
#define USTERR_H

#include <string.h>
#include <sys/types.h>
#include <sys/syscall.h>
#include <errno.h>

#ifndef UST_COMPONENT
//#error UST_COMPONENT is undefined
#define UST_COMPONENT libust
#endif

/* To stringify the expansion of a define */
#define XSTR(d) STR(d)
#define STR(s) #s

#define UST_STR_COMPONENT XSTR(UST_COMPONENT)

#define ERRMSG(fmt, args...) do { fprintf(stderr, UST_STR_COMPONENT "[%ld/%ld]: " fmt " (" __FILE__ ":" XSTR(__LINE__) ")\n", (long) getpid(), (long) syscall(SYS_gettid), ## args); fflush(stderr); } while(0)

#define DEBUG
#ifdef DEBUG
# define DBG(fmt, args...) ERRMSG(fmt, ## args)
#else
# define DBG(fmt, args...) do {} while(0)
#endif
#define WARN(fmt, args...) ERRMSG("Warning: " fmt, ## args)
#define ERR(fmt, args...) ERRMSG("Error: " fmt, ## args)
#define BUG(fmt, args...) ERRMSG("BUG: " fmt, ## args)

#if (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !defined(_GNU_SOURCE)
#define PERROR(call, args...)\
	do { \
		char buf[200] = "Error in strerror_r()"; \
		strerror_r(errno, buf, sizeof(buf)); \
		ERRMSG("Error: " call ": %s", ## args, buf); \
	} while(0);
#else
#define PERROR(call, args...)\
	do { \
		char *buf; \
		char tmp[200]; \
		buf = strerror_r(errno, tmp, sizeof(tmp)); \
		ERRMSG("Error: " call ": %s", ## args, buf); \
	} while(0);
#endif

#define BUG_ON(condition) do { if (unlikely(condition)) ERR("condition not respected (BUG)"); } while(0)
#define WARN_ON(condition) do { if (unlikely(condition)) WARN("condition not respected on line %s:%d", __FILE__, __LINE__); } while(0)

#endif /* USTERR_H */
Commit	Line	Data
	1	#ifndef USTERR_H
	2	#define USTERR_H
	3
	4	#include <string.h>
	5	#include <sys/types.h>
	6	#include <sys/syscall.h>
	7	#include <errno.h>
	8
	9	#ifndef UST_COMPONENT
	10	//#error UST_COMPONENT is undefined
	11	#define UST_COMPONENT libust
	12	#endif
	13
	14	/* To stringify the expansion of a define */
	15	#define XSTR(d) STR(d)
	16	#define STR(s) #s
	17
	18	#define UST_STR_COMPONENT XSTR(UST_COMPONENT)
	19
	20	#define ERRMSG(fmt, args...) do { fprintf(stderr, UST_STR_COMPONENT "[%ld/%ld]: " fmt " (" __FILE__ ":" XSTR(__LINE__) ")\n", (long) getpid(), (long) syscall(SYS_gettid), ## args); fflush(stderr); } while(0)
	21
	22	#define DEBUG
	23	#ifdef DEBUG
	24	# define DBG(fmt, args...) ERRMSG(fmt, ## args)
	25	#else
	26	# define DBG(fmt, args...) do {} while(0)
	27	#endif
	28	#define WARN(fmt, args...) ERRMSG("Warning: " fmt, ## args)
	29	#define ERR(fmt, args...) ERRMSG("Error: " fmt, ## args)
	30	#define BUG(fmt, args...) ERRMSG("BUG: " fmt, ## args)
	31
	32	#if (_POSIX_C_SOURCE >= 200112L \|\| _XOPEN_SOURCE >= 600) && !defined(_GNU_SOURCE)
	33	#define PERROR(call, args...)\
	34	do { \
	35	char buf[200] = "Error in strerror_r()"; \
	36	strerror_r(errno, buf, sizeof(buf)); \
	37	ERRMSG("Error: " call ": %s", ## args, buf); \
	38	} while(0);
	39	#else
	40	#define PERROR(call, args...)\
	41	do { \
	42	char *buf; \
	43	char tmp[200]; \
	44	buf = strerror_r(errno, tmp, sizeof(tmp)); \
	45	ERRMSG("Error: " call ": %s", ## args, buf); \
	46	} while(0);
	47	#endif
	48
	49	#define BUG_ON(condition) do { if (unlikely(condition)) ERR("condition not respected (BUG)"); } while(0)
	50	#define WARN_ON(condition) do { if (unlikely(condition)) WARN("condition not respected on line %s:%d", __FILE__, __LINE__); } while(0)
	51
	52	#endif /* USTERR_H */