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3ec1289896
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
125 lines
4.4 KiB
C
125 lines
4.4 KiB
C
/*
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* Copyright (C) 2011 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Daniel P. Berrange <berrange@redhat.com>
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*/
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#include <config.h>
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#include <stdlib.h>
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#include <signal.h>
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#include "testutils.h"
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#include "util.h"
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#include "virterror_internal.h"
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#include "memory.h"
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#include "logging.h"
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#include "virtime.h"
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#define VIR_FROM_THIS VIR_FROM_RPC
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struct testTimeFieldsData {
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unsigned long long when;
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struct tm fields;
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};
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static int testTimeFields(const void *args)
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{
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const struct testTimeFieldsData *data = args;
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struct tm actual;
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if (virTimeFieldsThen(data->when, &actual) < 0)
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return -1;
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#define COMPARE(field) \
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do { \
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if (data->fields.field != actual.field) { \
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VIR_DEBUG("Expect " #field " %d got %d", \
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data->fields.field, actual.field); \
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return -1; \
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} \
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} while (0)
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/* tm_year value 0 is based off epoch 1900 */
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actual.tm_year += 1900;
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/* tm_mon is range 0-11, but we want 1-12 */
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actual.tm_mon += 1;
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COMPARE(tm_year);
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COMPARE(tm_mon);
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COMPARE(tm_mday);
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COMPARE(tm_hour);
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COMPARE(tm_min);
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COMPARE(tm_sec);
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return 0;
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}
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static int
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mymain(void)
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{
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int ret = 0;
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signal(SIGPIPE, SIG_IGN);
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#define TEST_FIELDS(ts, year, mon, day, hour, min, sec) \
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do { \
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struct testTimeFieldsData data = { \
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.when = ts, \
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.fields = { \
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.tm_year = year, \
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.tm_mon = mon, \
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.tm_mday = day, \
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.tm_hour = hour, \
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.tm_min = min, \
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.tm_sec = sec, \
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.tm_wday = 0, \
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.tm_yday = 0, \
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.tm_isdst = 0, \
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}, \
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}; \
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if (virtTestRun("Test fields " #ts " " #year " ", 1, testTimeFields, &data) < 0) \
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ret = -1; \
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} while (0)
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TEST_FIELDS( 0ull, 1970, 1, 1, 0, 0, 0);
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TEST_FIELDS( 5000ull, 1970, 1, 1, 0, 0, 5);
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TEST_FIELDS( 3605000ull, 1970, 1, 1, 1, 0, 5);
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TEST_FIELDS( 86405000ull, 1970, 1, 2, 0, 0, 5);
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TEST_FIELDS( 31536000000ull, 1971, 1, 1, 0, 0, 0);
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TEST_FIELDS( 30866399000ull, 1970, 12, 24, 5, 59, 59);
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TEST_FIELDS( 123465599000ull, 1973, 11, 29, 23, 59, 59);
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TEST_FIELDS( 155001599000ull, 1974, 11, 29, 23, 59, 59);
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TEST_FIELDS( 186537599000ull, 1975, 11, 29, 23, 59, 59);
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TEST_FIELDS( 344390399000ull, 1980, 11, 29, 23, 59, 59);
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TEST_FIELDS(1203161493000ull, 2008, 2, 16, 11, 31, 33);
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TEST_FIELDS(1234567890000ull, 2009, 2, 13, 23, 31, 30);
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TEST_FIELDS(1322524800000ull, 2011, 11, 29, 0, 0, 0);
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TEST_FIELDS(1322611199000ull, 2011, 11, 29, 23, 59, 59);
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TEST_FIELDS(2147483648000ull, 2038, 1, 19, 3, 14, 8);
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return (ret==0 ? EXIT_SUCCESS : EXIT_FAILURE);
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}
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VIRT_TEST_MAIN(mymain)
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