tai64nlocal.c

daemontools-0.76.tar.gz是在linux环境下自动监控进程的源程序

#include <sys/types.h>
#include <time.h>
#include <sys/time.h>
#include <unistd.h>
#include "buffer.h"
#include "fmt.h"

char num[FMT_ULONG];

void get(char *ch)
{
  int r;

  r = buffer_GETC(buffer_0,ch);
  if (r == 1) return;
  if (r == 0) _exit(0);
  _exit(111);
}

void out(const char *buf,int len)
{
  if (buffer_put(buffer_1,buf,len) == -1)
    _exit(111);
}

time_t secs;
unsigned long nanosecs;
unsigned long u;
struct tm *t;

int main()
{
  char ch;

  for (;;) {
    get(&ch);
    if (ch == '@') {
      secs = 0;
      nanosecs = 0;
      for (;;) {
        get(&ch);
        u = ch - '0';
        if (u >= 10) {
          u = ch - 'a';
          if (u >= 6) break;
          u += 10;
        }
        secs <<= 4;
        secs += nanosecs >> 28;
        nanosecs &= 0xfffffff;
        nanosecs <<= 4;
        nanosecs += u;
      }
      secs -= 4611686018427387914ULL;
      t = localtime(&secs);
      out(num,fmt_ulong(num,1900 + t->tm_year));
      out("-",1); out(num,fmt_uint0(num,1 + t->tm_mon,2));
      out("-",1); out(num,fmt_uint0(num,t->tm_mday,2));
      out(" ",1); out(num,fmt_uint0(num,t->tm_hour,2));
      out(":",1); out(num,fmt_uint0(num,t->tm_min,2));
      out(":",1); out(num,fmt_uint0(num,t->tm_sec,2));
      out(".",1); out(num,fmt_uint0(num,nanosecs,9));
    }
    for (;;) {
      out(&ch,1);
      if (ch == '\n') break;
      get(&ch);
    }
  }
}