/* Test of <stat-time.h>.
- Copyright (C) 2007-2009 Free Software Foundation, Inc.
+ Copyright (C) 2007-2011 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 <fcntl.h>
#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
#include <sys/stat.h>
#include <unistd.h>
-#define ASSERT(expr) \
- do \
- { \
- if (!(expr)) \
- { \
- fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
- fflush (stderr); \
- abort (); \
- } \
- } \
- while (0)
+#include "macros.h"
enum { NFILES = 4 };
-static void
+static int
force_unlink (const char *filename)
{
/* This chmod is necessary on mingw, where unlink() of a read-only file
fails with EPERM. */
chmod (filename, 0600);
- unlink (filename);
+ return unlink (filename);
}
static void
static void
nap (void)
{
-#if !HAVE_USLEEP
- /* Assume the worst case file system of FAT, which has a granularity
- of 2 seconds. */
- sleep (2);
-#else /* HAVE_USLEEP */
static long delay;
if (!delay)
{
- /* Initialize only once, by sleeping for 1 millisecond. If that
- was enough to observe a difference, then we are set;
- otherwise fall back to 2 seconds. */
+ /* Initialize only once, by sleeping for 20 milliseconds (needed
+ since xfs has a quantization of about 10 milliseconds, even
+ though it has a granularity of 1 nanosecond, and since NTFS
+ has a default quantization of 15.25 milliseconds, even though
+ it has a granularity of 100 nanoseconds). If the seconds
+ differ, repeat the test one more time (in case we crossed a
+ quantization boundary on a file system with 1 second
+ resolution). If we can't observe a difference in only the
+ nanoseconds, then fall back to 1 second if the time is odd,
+ and 2 seconds (needed for FAT) if time is even. */
struct stat st1;
struct stat st2;
ASSERT (stat ("t-stt-stamp1", &st1) == 0);
- ASSERT (unlink ("t-stt-stamp1") == 0);
- usleep (delay = 1000);
+ ASSERT (force_unlink ("t-stt-stamp1") == 0);
+ delay = 20000;
+ usleep (delay);
create_file ("t-stt-stamp1");
ASSERT (stat ("t-stt-stamp1", &st2) == 0);
- if (! (st1.st_mtime < st2.st_mtime
- || (st1.st_mtime == st2.st_mtime
- && get_stat_mtime_ns (&st1) < get_stat_mtime_ns (&st2))))
- delay = 2000000;
+ if (st1.st_mtime != st2.st_mtime)
+ {
+ /* Seconds differ, give it one more shot. */
+ st1 = st2;
+ ASSERT (force_unlink ("t-stt-stamp1") == 0);
+ usleep (delay);
+ create_file ("t-stt-stamp1");
+ ASSERT (stat ("t-stt-stamp1", &st2) == 0);
+ }
+ if (! (st1.st_mtime == st2.st_mtime
+ && get_stat_mtime_ns (&st1) < get_stat_mtime_ns (&st2)))
+ delay = (st1.st_mtime & 1) ? 1000000 : 2000000;
}
usleep (delay);
-#endif /* HAVE_USLEEP */
}
static void
st_ctime is either the same as st_mtime (plus or minus an offset)
or set to the file _creation_ time, and is not influenced by rename
or chmod. */
-# define test_ctime ((void) 0)
+# define test_ctime(ignored) ((void) 0)
#else
static void
test_ctime (const struct stat *statinfo)
{
int i;
- /* Collect the birth times.. */
+ /* Collect the birth times. */
for (i = 0; i < NFILES; ++i)
{
birthtimes[i] = get_stat_birthtime (&statinfo[i]);
}
int
-main ()
+main (void)
{
struct stat statinfo[NFILES];
struct timespec modtimes[NFILES];