common.h

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#include <setjmp.h>         /* jmp_buf, setjmp, longjmp */
#include <sys/iofunc.h>     /* SIGINT, SIGQUIT, SIGTERM, SIGALRM */


#ifndef INCLUDE_UTILS_COMMON_H_
#define INCLUDE_UTILS_COMMON_H_


/* -------------------------------------------------------------------------- */
/* -------------------- Definitions for common constants -------------------- */
/* -------------------------------------------------------------------------- */


#define ERROR           -1              
#define END_OF_STRING   ((char)'\0')    
#define MAX_LINE_LEN    132             
#define ERROR_LONG      (-1L)           
#define ASC_EQUAL_SIGN  '='             
#define ASC_LEFT_ARRAY  '['             
/* -------------------------------------------------------------------------- */
/* --------------------- Definitions for common objects --------------------- */
/* -------------------------------------------------------------------------- */


typedef unsigned char BYTE;     
typedef unsigned char BIT;      
/* -------------------------------------------------------------------------- */
/* ----------------- Signal messages (used in CAN for now) ------------------ */
/* -------------------------------------------------------------------------- */


static int sig_list[] = {
    SIGINT,
    SIGQUIT,
    SIGTERM,
    SIGALRM,        // for timer
    ERROR
};


static jmp_buf exit_env;


static void sig_hand(int code) {
    if (code == SIGALRM)
        return;
    else
        longjmp(exit_env, code);
}


static void sig_ign(int *sig_list, void sig_hand(int sig)) {
    int i = 0;
    while (sig_list[i] != ERROR) {
        signal(sig_list[i], sig_hand);
        i++;
    }
}


#endif /* INCLUDE_UTILS_COMMON_H_ */