/* Work around the bug in some systems whereby gettimeofday clobbers the
static buffer that localtime uses for it's return value. The gettimeofday
function from Mac OS X 10.0.4, i.e. Darwin 1.3.7 has this problem.
- Copyright (C) 2001 Free Software Foundation, Inc.
+ The tzset replacement is necessary for at least Solaris 2.5, 2.5.1, and 2.6.
+ Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include <config.h>
-/* Disable the definition of gettimeofday (from config.h) so we can use
- the library version. */
+/* Disable the definitions of these functions (from config.h)
+ so we can use the library versions here. */
#undef gettimeofday
+#undef gmtime
+#undef localtime
+#undef tzset
#include <sys/types.h>
#endif
#include <stdlib.h>
-#include "gtod.h"
static struct tm *localtime_buffer_addr;
-void
-GTOD_init (void)
+/* This is a wrapper for localtime. It is used only on systems for which
+ gettimeofday clobbers the static buffer used for localtime's result.
+
+ On the first call, record the address of the static buffer that
+ localtime uses for its result. */
+
+struct tm *
+rpl_localtime (const time_t *timep)
+{
+ struct tm *tm = localtime (timep);
+
+ if (! localtime_buffer_addr)
+ localtime_buffer_addr = tm;
+
+ return tm;
+}
+
+/* Same as above, since gmtime and localtime use the same buffer. */
+struct tm *
+rpl_gmtime (const time_t *timep)
{
- time_t t = 0;
- localtime_buffer_addr = localtime (&t);
+ struct tm *tm = gmtime (timep);
+
+ if (! localtime_buffer_addr)
+ localtime_buffer_addr = tm;
+
+ return tm;
}
/* This is a wrapper for gettimeofday. It is used only on systems for which
rpl_gettimeofday (struct timeval *tv, struct timezone *tz)
{
struct tm save;
+ int result;
+
if (! localtime_buffer_addr)
- abort ();
+ {
+ time_t t = 0;
+ localtime_buffer_addr = localtime (&t);
+ }
save = *localtime_buffer_addr;
result = gettimeofday (tv, tz);
return result;
}
+
+/* This is a wrapper for tzset. It is used only on systems for which
+ tzset may clobber the static buffer used for localtime's result.
+ Save and restore the contents of the buffer used for localtime's
+ result around the call to tzset. */
+void
+rpl_tzset (void)
+{
+ struct tm save;
+
+ if (! localtime_buffer_addr)
+ {
+ time_t t = 0;
+ localtime_buffer_addr = localtime (&t);
+ }
+
+ save = *localtime_buffer_addr;
+ tzset ();
+ *localtime_buffer_addr = save;
+}