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When the libc headers used to build mosquitto define CLOCK_BOOTTIME but the kernel where mosquitto runs does not implement CLOCK_BOOTTIME, all timestamps are wrong (uninitialized data), because there is no check for the success of the clock_gettime() calls. This adds probing for the availability of CLOCK_BOOTTIME from mosquitto_lib_init(), falling back to CLOCK_MONOTONIC, and then modifies mosquitto_time() to use the selected clock. Probing at init time avoids having to do two clock_gettime() calls for every timestamp if CLOCK_BOOTTIME is not available. It also fixes a similar problem in mosquitto_lib_init(). Signed-off-by: Diego Santa Cruz <diego.santacruz@spinetix.com>
26 lines
695 B
C
26 lines
695 B
C
/*
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Copyright (c) 2013-2020 Roger Light <roger@atchoo.org>
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All rights reserved. This program and the accompanying materials
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are made available under the terms of the Eclipse Public License 2.0
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and Eclipse Distribution License v1.0 which accompany this distribution.
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The Eclipse Public License is available at
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https://www.eclipse.org/legal/epl-2.0/
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and the Eclipse Distribution License is available at
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http://www.eclipse.org/org/documents/edl-v10.php.
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SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
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Contributors:
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Roger Light - initial implementation and documentation.
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*/
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#ifndef TIME_MOSQ_H
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#define TIME_MOSQ_H
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void mosquitto_time_init(void);
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time_t mosquitto_time(void);
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#endif
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