diff options
Diffstat (limited to 'lib/isc/unix/stdtime.c')
-rw-r--r-- | lib/isc/unix/stdtime.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/lib/isc/unix/stdtime.c b/lib/isc/unix/stdtime.c new file mode 100644 index 0000000..ada19d0 --- /dev/null +++ b/lib/isc/unix/stdtime.c @@ -0,0 +1,68 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * SPDX-License-Identifier: MPL-2.0 + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, you can obtain one at https://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + +/*! \file */ + +#include <errno.h> +#include <stdbool.h> +#include <stddef.h> /* NULL */ +#include <stdlib.h> /* NULL */ +#include <syslog.h> +#include <time.h> + +#include <isc/stdtime.h> +#include <isc/strerr.h> +#include <isc/util.h> + +#define NS_PER_S 1000000000 /*%< Nanoseconds per second. */ + +#if defined(CLOCK_REALTIME_COARSE) +#define CLOCKSOURCE CLOCK_REALTIME_COARSE +#elif defined(CLOCK_REALTIME_FAST) +#define CLOCKSOURCE CLOCK_REALTIME_FAST +#else /* if defined(CLOCK_REALTIME_COARSE) */ +#define CLOCKSOURCE CLOCK_REALTIME +#endif /* if defined(CLOCK_REALTIME_COARSE) */ + +void +isc_stdtime_get(isc_stdtime_t *t) { + REQUIRE(t != NULL); + + struct timespec ts; + + if (clock_gettime(CLOCKSOURCE, &ts) == -1) { + char strbuf[ISC_STRERRORSIZE]; + strerror_r(errno, strbuf, sizeof(strbuf)); + isc_error_fatal(__FILE__, __LINE__, "clock_gettime failed: %s", + strbuf); + } + + REQUIRE(ts.tv_sec > 0 && ts.tv_nsec >= 0 && ts.tv_nsec < NS_PER_S); + + *t = (isc_stdtime_t)ts.tv_sec; +} + +void +isc_stdtime_tostring(isc_stdtime_t t, char *out, size_t outlen) { + time_t when; + + REQUIRE(out != NULL); + REQUIRE(outlen >= 26); + + UNUSED(outlen); + + /* time_t and isc_stdtime_t might be different sizes */ + when = t; + INSIST((ctime_r(&when, out) != NULL)); + *(out + strlen(out) - 1) = '\0'; +} |