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47 lines
1.0 KiB
C

/* A slog is a simple log. Basically extracted from antirez/redis. */
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <time.h>
#include <sys/types.h>
#include <unistd.h>
#include <pthread.h>
#include <string.h>
#include "slog.h"
#include "server.h"
#include "conf.h"
void
slog(struct server *s, log_level level,
const char *body, size_t sz) {
const char *c = ".-*#";
time_t now = time(NULL);
static FILE *fp = NULL;
char buf[64];
char msg[124];
static pid_t self = 0;
if(!self) self = getpid();
if(level > s->cfg->verbosity) return; /* too verbose */
pthread_spin_lock(&s->log_lock);
if(!fp) fp = (s->cfg->logfile == NULL) ? stdout : fopen(s->cfg->logfile, "a");
if(!fp) goto end;
/* limit message size */
sz = sz ? sz:strlen(body);
snprintf(msg, sz + 1 > sizeof(msg) ? sizeof(msg) : sz + 1, "%s", body);
strftime(buf,sizeof(buf),"%d %b %H:%M:%S",localtime(&now));
fprintf(fp,"[%d] %s %c %s\n", (int)self, buf, c[level], msg);
fflush(fp);
end:
pthread_spin_unlock(&s->log_lock);
}