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libvirt/tests/virtimetest.c
Daniel P. Berrange 3ec1289896 Add internal APIs for dealing with time
The logging APIs need to be able to generate formatted timestamps
using only async signal safe functions. This rules out using
gmtime/localtime/malloc/gettimeday(!) and much more.

Introduce a new internal API which is async signal safe.

  virTimeMillisNowRaw replacement for gettimeofday. Uses clock_gettime
                      where available, otherwise falls back to the unsafe
                      gettimeofday

  virTimeFieldsNowRaw  replacements for gmtime(), convert a timestamp
  virTimeFieldsThenRaw into a broken out set of fields. No localtime()
                       replacement is provided, because converting to
                       local time is not practical with only async signal
                       safe APIs.

  virTimeStringNowRaw  replacements for strftime() which print a timestamp
  virTimeStringThenRaw into a string, using a pre-determined format, with
                       a fixed size buffer (VIR_TIME_STRING_BUFLEN)

For each of these there is also a version without the Raw postfix
which raises a full libvirt error. These versions are not async
signal safe

* src/Makefile.am, src/util/virtime.c, src/util/virtime.h: New files
* src/libvirt_private.syms: New APis
* configure.ac: Check for clock_gettime in -lrt
* tests/virtimetest.c, tests/Makefile.am: Test new APIs
2011-11-30 11:43:49 +00:00

125 lines
4.4 KiB
C

/*
* Copyright (C) 2011 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include <config.h>
#include <stdlib.h>
#include <signal.h>
#include "testutils.h"
#include "util.h"
#include "virterror_internal.h"
#include "memory.h"
#include "logging.h"
#include "virtime.h"
#define VIR_FROM_THIS VIR_FROM_RPC
struct testTimeFieldsData {
unsigned long long when;
struct tm fields;
};
static int testTimeFields(const void *args)
{
const struct testTimeFieldsData *data = args;
struct tm actual;
if (virTimeFieldsThen(data->when, &actual) < 0)
return -1;
#define COMPARE(field) \
do { \
if (data->fields.field != actual.field) { \
VIR_DEBUG("Expect " #field " %d got %d", \
data->fields.field, actual.field); \
return -1; \
} \
} while (0)
/* tm_year value 0 is based off epoch 1900 */
actual.tm_year += 1900;
/* tm_mon is range 0-11, but we want 1-12 */
actual.tm_mon += 1;
COMPARE(tm_year);
COMPARE(tm_mon);
COMPARE(tm_mday);
COMPARE(tm_hour);
COMPARE(tm_min);
COMPARE(tm_sec);
return 0;
}
static int
mymain(void)
{
int ret = 0;
signal(SIGPIPE, SIG_IGN);
#define TEST_FIELDS(ts, year, mon, day, hour, min, sec) \
do { \
struct testTimeFieldsData data = { \
.when = ts, \
.fields = { \
.tm_year = year, \
.tm_mon = mon, \
.tm_mday = day, \
.tm_hour = hour, \
.tm_min = min, \
.tm_sec = sec, \
.tm_wday = 0, \
.tm_yday = 0, \
.tm_isdst = 0, \
}, \
}; \
if (virtTestRun("Test fields " #ts " " #year " ", 1, testTimeFields, &data) < 0) \
ret = -1; \
} while (0)
TEST_FIELDS( 0ull, 1970, 1, 1, 0, 0, 0);
TEST_FIELDS( 5000ull, 1970, 1, 1, 0, 0, 5);
TEST_FIELDS( 3605000ull, 1970, 1, 1, 1, 0, 5);
TEST_FIELDS( 86405000ull, 1970, 1, 2, 0, 0, 5);
TEST_FIELDS( 31536000000ull, 1971, 1, 1, 0, 0, 0);
TEST_FIELDS( 30866399000ull, 1970, 12, 24, 5, 59, 59);
TEST_FIELDS( 123465599000ull, 1973, 11, 29, 23, 59, 59);
TEST_FIELDS( 155001599000ull, 1974, 11, 29, 23, 59, 59);
TEST_FIELDS( 186537599000ull, 1975, 11, 29, 23, 59, 59);
TEST_FIELDS( 344390399000ull, 1980, 11, 29, 23, 59, 59);
TEST_FIELDS(1203161493000ull, 2008, 2, 16, 11, 31, 33);
TEST_FIELDS(1234567890000ull, 2009, 2, 13, 23, 31, 30);
TEST_FIELDS(1322524800000ull, 2011, 11, 29, 0, 0, 0);
TEST_FIELDS(1322611199000ull, 2011, 11, 29, 23, 59, 59);
TEST_FIELDS(2147483648000ull, 2038, 1, 19, 3, 14, 8);
return (ret==0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
VIRT_TEST_MAIN(mymain)