minix/commands/cron/misc.c

   1 /*      misc.c - Miscellaneous stuff for cron           Author: Kees J. Bot
   2  *                                                              12 Jan 1997
   3  */
   4 #define nil ((void*)0)
   5 #include <sys/types.h>
   6 #include <stdio.h>
   7 #include <stdarg.h>
   8 #include <stdlib.h>
   9 #include <time.h>
  10 #include "misc.h"
  11
  12 char *prog_name;                /* Name of this program. */
  13 time_t now;                     /* Cron's idea of the current time. */
  14 time_t next;                    /* Time to run the next job. */
  15
  16 size_t alloc_count;             /* # Of chunks of memory allocated. */
  17
  18 void *allocate(size_t len)
  19 /* Checked malloc().  Better not feed it length 0. */
  20 {
  21         void *mem;
  22
  23         if ((mem= malloc(len)) == nil) {
  24                 cronlog(LOG_ALERT, "Out of memory, exiting\n");
  25                 exit(1);
  26         }
  27         alloc_count++;
  28         return mem;
  29 }
  30
  31 void deallocate(void *mem)
  32 {
  33         if (mem != nil) {
  34                 free(mem);
  35                 alloc_count--;
  36         }
  37 }
  38
  39 static enum logto logto= SYSLOG;
  40
  41 void selectlog(enum logto where)
  42 /* Select where logging output should go, syslog or stdout. */
  43 {
  44         logto= where;
  45 }
  46
  47 void cronlog(int level, const char *fmt, ...)
  48 /* Like syslog(), but may go to stderr. */
  49 {
  50         va_list ap;
  51
  52         va_start(ap, fmt);
  53
  54 #if __minix_vmd || !__minix
  55         if (logto == SYSLOG) {
  56                 vsyslog(level, fmt, ap);
  57         } else
  58 #endif
  59         {
  60                 fprintf(stderr, "%s: ", prog_name);
  61                 vfprintf(stderr, fmt, ap);
  62         }
  63         va_end(ap);
  64 }
  65
  66 /*
  67  * $PchId: misc.c,v 1.3 2000/07/17 19:01:57 philip Exp $
  68  */