gnunet/src/include/gauger.h

/* ---------------------------------------------------------------------------
 * This software is in the public domain, furnished "as is", without technical
 * support, and with no warranty, express or implied, as to its usefulness for
 * any purpose.
 *
 * gauger.h
 * Interface for C programs to log remotely to a gauger server
 *
 * Author: Bartlomiej Polot
 * -------------------------------------------------------------------------*/
#ifndef __GAUGER_H__
#define __GAUGER_H__

#include <unistd.h>
#include <stdio.h>
#include <sys/wait.h>

#define GAUGER(category, counter, value, unit) \
  { \
    char*__gauger_v[10]; \
    char __gauger_s[32]; \
    pid_t __gauger_p; \
    if (! (__gauger_p = fork ())) { \
      close (1);           \
      close (2);           \
      if (! fork ()) { \
        sprintf (__gauger_s, "%Lf", (long double) (value)); \
        __gauger_v[0] = "gauger"; \
        __gauger_v[1] = "-n"; \
        __gauger_v[2] = (char *) (counter);  \
        __gauger_v[3] = "-d"; \
        __gauger_v[4] = __gauger_s; \
        __gauger_v[5] = "-u"; \
        __gauger_v[6] = (char *) (unit);     \
        __gauger_v[7] = "-c"; \
        __gauger_v[8] = (char *) (category); \
        __gauger_v[9] = (char *) NULL; \
        execvp ("gauger", __gauger_v); \
        _exit (1); \
      }else{ \
        _exit (0); \
      } \
    }else{ \
      waitpid (__gauger_p, NULL, 0); \
    } \
  }

#define GAUGER_ID(category, counter, value, unit, id) \
  { \
    char*__gauger_v[12]; \
    char __gauger_s[32]; \
    pid_t __gauger_p; \
    if (! (__gauger_p = fork ())) { \
      close (1);           \
      close (2);           \
      if (! fork ()) { \
        sprintf (__gauger_s, "%Lf", (long double) (value)); \
        __gauger_v[0] = "gauger"; \
        __gauger_v[1] = "-n"; \
        __gauger_v[2] = (char *) (counter);  \
        __gauger_v[3] = "-d"; \
        __gauger_v[4] = __gauger_s; \
        __gauger_v[5] = "-u"; \
        __gauger_v[6] = (char *) (unit);     \
        __gauger_v[7] = "-i"; \
        __gauger_v[8] = id; \
        __gauger_v[9] = "-c"; \
        __gauger_v[10] = (char *) (category);       \
        __gauger_v[11] = (char *) NULL; \
        execvp ("gauger", __gauger_v); \
        _exit (1); \
      }else{ \
        _exit (0); \
      } \
    }else{ \
      waitpid (__gauger_p, NULL, 0); \
    } \
  }

#endif