share/usterr.h

   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 */