Improved heuristics for internal sorter capacity estimation.

[libucw.git] / lib / log.c

diff --git a/lib/log.c b/lib/log.c
index 498dba66075c34add409cff54bd92b25eea09cc6..0063f3ea7eed13d2239f28f85cda35d8a475d927 100644 (file)
--- a/lib/log.c
+++ b/lib/log.c
@@ -1,7 +1,7 @@
 /*
- *     Sherlock Library -- Logging
+ *     UCW Library -- Logging
  *
- *     (c) 1997--2004 Martin Mares <mj@ucw.cz>
+ *     (c) 1997--2006 Martin Mares <mj@ucw.cz>
  *
  *     This software may be freely distributed and used according to the terms
  *     of the GNU Lesser General Public License.
@@ -13,6 +13,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <sys/time.h>
 #include <time.h>
 #include <alloca.h>
 
@@ -20,25 +21,36 @@ static char log_progname[32];
 char *log_filename;
 char *log_title;
 int log_pid;
+int log_precise_timings;
 void (*log_die_hook)(void);
 void (*log_switch_hook)(struct tm *tm);
 
 void
-vlog_msg(unsigned int cat, const char *msg, va_list args)
+vmsg(unsigned int cat, const char *fmt, va_list args)
 {
-  time_t tim = time(NULL);
-  struct tm *tm = localtime(&tim);
+  struct timeval tv;
+  struct tm tm;
   byte *buf, *p;
   int buflen = 256;
   int l, l0, r;
+  va_list args2;
+
+  gettimeofday(&tv, NULL);
+  if (!localtime_r(&tv.tv_sec, &tm))
+    bzero(&tm, sizeof(tm));
 
   if (log_switch_hook)
-    log_switch_hook(tm);
+    log_switch_hook(&tm);
   while (1)
     {
       p = buf = alloca(buflen);
       *p++ = cat;
-      p += strftime(p, buflen, " %Y-%m-%d %H:%M:%S ", tm);
+      /* We cannot use strftime() here, because it's not re-entrant */
+      p += sprintf(p, " %4d-%02d-%02d %02d:%02d:%02d", tm.tm_year+1900, tm.tm_mon+1, tm.tm_mday,
+                  tm.tm_hour, tm.tm_min, tm.tm_sec);
+      if (log_precise_timings)
+        p += sprintf(p, ".%06d", (int)tv.tv_usec);
+      *p++ = ' ';
       if (log_title)
        {
          if (log_pid)
@@ -53,7 +65,9 @@ vlog_msg(unsigned int cat, const char *msg, va_list args)
        }
       l0 = p - buf + 1;
       r = buflen - l0;
-      l = vsnprintf(p, r, msg, args);
+      va_copy(args2, args);
+      l = vsnprintf(p, r, fmt, args2);
+      va_end(args2);
       if (l < 0)
        l = r;
       else if (l < r)
@@ -73,22 +87,22 @@ vlog_msg(unsigned int cat, const char *msg, va_list args)
 }
 
 void
-log_msg(unsigned int cat, const char *msg, ...)
+msg(unsigned int cat, const char *fmt, ...)
 {
   va_list args;
 
-  va_start(args, msg);
-  vlog_msg(cat, msg, args);
+  va_start(args, fmt);
+  vmsg(cat, fmt, args);
   va_end(args);
 }
 
 void
-die(byte *msg, ...)
+die(const char *fmt, ...)
 {
   va_list args;
 
-  va_start(args, msg);
-  vlog_msg(L_FATAL, msg, args);
+  va_start(args, fmt);
+  vmsg(L_FATAL, fmt, args);
   va_end(args);
   if (log_die_hook)
     log_die_hook();
@@ -100,9 +114,9 @@ die(byte *msg, ...)
 }
 
 void
-assert_failed(char *assertion, char *file, int line)
+assert_failed(const char *assertion, const char *file, int line)
 {
-  log(L_FATAL, "Assertion `%s' failed at %s:%d", assertion, file, line);
+  msg(L_FATAL, "Assertion `%s' failed at %s:%d", assertion, file, line);
   abort();
 }
 
@@ -112,10 +126,10 @@ assert_failed_noinfo(void)
   die("Internal error: Assertion failed.");
 }
 
-static byte *
-log_basename(byte *n)
+static const char *
+log_basename(const char *n)
 {
-  byte *p = n;
+  const char *p = n;
 
   while (*n)
     if (*n++ == '/')
@@ -124,7 +138,7 @@ log_basename(byte *n)
 }
 
 void
-log_init(byte *argv0)
+log_init(const char *argv0)
 {
   if (argv0)
     {