54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/*
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* Copyright(c) 2006 to 2019 ZettaScale Technology and others
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*
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* This program and the accompanying materials are made available under the
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* terms of the Eclipse Public License v. 2.0 which is available at
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* http://www.eclipse.org/legal/epl-2.0, or the Eclipse Distribution License
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* v. 1.0 which is available at
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* http://www.eclipse.org/org/documents/edl-v10.php.
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*
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* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
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*/
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#ifndef DDSRT_TIME_FREERTOS_H
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#define DDSRT_TIME_FREERTOS_H
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#include <assert.h>
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#include <FreeRTOS.h>
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#if defined (__cplusplus)
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extern "C" {
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#endif
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#define DDSRT_NSECS_PER_TICK (DDS_NSECS_IN_SEC / configTICK_RATE_HZ)
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inline TickType_t
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ddsrt_duration_to_ticks_ceil(
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dds_duration_t reltime)
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{
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TickType_t ticks = 0;
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assert(portMAX_DELAY > configTICK_RATE_HZ);
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if (reltime == DDS_INFINITY) {
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ticks = portMAX_DELAY;
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} else if (reltime > 0) {
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dds_duration_t max_nsecs =
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(DDS_INFINITY / DDSRT_NSECS_PER_TICK < portMAX_DELAY
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? DDS_INFINITY - 1 : portMAX_DELAY * DDSRT_NSECS_PER_TICK);
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if (reltime > max_nsecs - (DDSRT_NSECS_PER_TICK - 1)) {
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ticks = portMAX_DELAY;
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} else {
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ticks = (TickType_t)((reltime + (DDSRT_NSECS_PER_TICK - 1)) / DDSRT_NSECS_PER_TICK);
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}
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}
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return ticks;
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}
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#if defined (__cplusplus)
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}
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#endif
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#endif /* DDSRT_TIME_FREERTOS_H */
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