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Dependents:   Mecatro_Filtre

rtx/TARGET_ARM7/rt_Robin.c@0:4a2c9c1f5b9e, 2021-03-15 (annotated)

Committer:
mecatro_prod
Date:
Mon Mar 15 14:18:11 2021 +0000
Revision:
0:4a2c9c1f5b9e
Pas de changement

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mecatro_prod 0:4a2c9c1f5b9e 1 /*----------------------------------------------------------------------------
mecatro_prod 0:4a2c9c1f5b9e 2 * RL-ARM - RTX
mecatro_prod 0:4a2c9c1f5b9e 3 *----------------------------------------------------------------------------
mecatro_prod 0:4a2c9c1f5b9e 4 * Name: RT_ROBIN.C
mecatro_prod 0:4a2c9c1f5b9e 5 * Purpose: Round Robin Task switching
mecatro_prod 0:4a2c9c1f5b9e 6 * Rev.: V4.60
mecatro_prod 0:4a2c9c1f5b9e 7 *----------------------------------------------------------------------------
mecatro_prod 0:4a2c9c1f5b9e 8 *
mecatro_prod 0:4a2c9c1f5b9e 9 * Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH
mecatro_prod 0:4a2c9c1f5b9e 10 * All rights reserved.
mecatro_prod 0:4a2c9c1f5b9e 11 * Redistribution and use in source and binary forms, with or without
mecatro_prod 0:4a2c9c1f5b9e 12 * modification, are permitted provided that the following conditions are met:
mecatro_prod 0:4a2c9c1f5b9e 13 * - Redistributions of source code must retain the above copyright
mecatro_prod 0:4a2c9c1f5b9e 14 * notice, this list of conditions and the following disclaimer.
mecatro_prod 0:4a2c9c1f5b9e 15 * - Redistributions in binary form must reproduce the above copyright
mecatro_prod 0:4a2c9c1f5b9e 16 * notice, this list of conditions and the following disclaimer in the
mecatro_prod 0:4a2c9c1f5b9e 17 * documentation and/or other materials provided with the distribution.
mecatro_prod 0:4a2c9c1f5b9e 18 * - Neither the name of ARM nor the names of its contributors may be used
mecatro_prod 0:4a2c9c1f5b9e 19 * to endorse or promote products derived from this software without
mecatro_prod 0:4a2c9c1f5b9e 20 * specific prior written permission.
mecatro_prod 0:4a2c9c1f5b9e 21 *
mecatro_prod 0:4a2c9c1f5b9e 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mecatro_prod 0:4a2c9c1f5b9e 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mecatro_prod 0:4a2c9c1f5b9e 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
mecatro_prod 0:4a2c9c1f5b9e 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
mecatro_prod 0:4a2c9c1f5b9e 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
mecatro_prod 0:4a2c9c1f5b9e 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
mecatro_prod 0:4a2c9c1f5b9e 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mecatro_prod 0:4a2c9c1f5b9e 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mecatro_prod 0:4a2c9c1f5b9e 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
mecatro_prod 0:4a2c9c1f5b9e 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mecatro_prod 0:4a2c9c1f5b9e 32 * POSSIBILITY OF SUCH DAMAGE.
mecatro_prod 0:4a2c9c1f5b9e 33 *---------------------------------------------------------------------------*/
mecatro_prod 0:4a2c9c1f5b9e 34
mecatro_prod 0:4a2c9c1f5b9e 35 #include "rt_TypeDef.h"
mecatro_prod 0:4a2c9c1f5b9e 36 #include "RTX_Conf.h"
mecatro_prod 0:4a2c9c1f5b9e 37 #include "rt_List.h"
mecatro_prod 0:4a2c9c1f5b9e 38 #include "rt_Task.h"
mecatro_prod 0:4a2c9c1f5b9e 39 #include "rt_Time.h"
mecatro_prod 0:4a2c9c1f5b9e 40 #include "rt_Robin.h"
mecatro_prod 0:4a2c9c1f5b9e 41 #include "rt_HAL_CM.h"
mecatro_prod 0:4a2c9c1f5b9e 42
mecatro_prod 0:4a2c9c1f5b9e 43 /*----------------------------------------------------------------------------
mecatro_prod 0:4a2c9c1f5b9e 44 * Global Variables
mecatro_prod 0:4a2c9c1f5b9e 45 *---------------------------------------------------------------------------*/
mecatro_prod 0:4a2c9c1f5b9e 46
mecatro_prod 0:4a2c9c1f5b9e 47 struct OS_ROBIN os_robin;
mecatro_prod 0:4a2c9c1f5b9e 48
mecatro_prod 0:4a2c9c1f5b9e 49
mecatro_prod 0:4a2c9c1f5b9e 50 /*----------------------------------------------------------------------------
mecatro_prod 0:4a2c9c1f5b9e 51 * Global Functions
mecatro_prod 0:4a2c9c1f5b9e 52 *---------------------------------------------------------------------------*/
mecatro_prod 0:4a2c9c1f5b9e 53
mecatro_prod 0:4a2c9c1f5b9e 54 /*--------------------------- rt_init_robin ---------------------------------*/
mecatro_prod 0:4a2c9c1f5b9e 55
mecatro_prod 0:4a2c9c1f5b9e 56 __weak void rt_init_robin (void) {
mecatro_prod 0:4a2c9c1f5b9e 57 /* Initialize Round Robin variables. */
mecatro_prod 0:4a2c9c1f5b9e 58 os_robin.task = NULL;
mecatro_prod 0:4a2c9c1f5b9e 59 os_robin.tout = (U16)os_rrobin;
mecatro_prod 0:4a2c9c1f5b9e 60 }
mecatro_prod 0:4a2c9c1f5b9e 61
mecatro_prod 0:4a2c9c1f5b9e 62 /*--------------------------- rt_chk_robin ----------------------------------*/
mecatro_prod 0:4a2c9c1f5b9e 63
mecatro_prod 0:4a2c9c1f5b9e 64 __weak void rt_chk_robin (void) {
mecatro_prod 0:4a2c9c1f5b9e 65 /* Check if Round Robin timeout expired and switch to the next ready task.*/
mecatro_prod 0:4a2c9c1f5b9e 66 P_TCB p_new;
mecatro_prod 0:4a2c9c1f5b9e 67
mecatro_prod 0:4a2c9c1f5b9e 68 if (os_robin.task != os_rdy.p_lnk) {
mecatro_prod 0:4a2c9c1f5b9e 69 /* New task was suspended, reset Round Robin timeout. */
mecatro_prod 0:4a2c9c1f5b9e 70 os_robin.task = os_rdy.p_lnk;
mecatro_prod 0:4a2c9c1f5b9e 71 os_robin.time = (U16)os_time + os_robin.tout - 1;
mecatro_prod 0:4a2c9c1f5b9e 72 }
mecatro_prod 0:4a2c9c1f5b9e 73 if (os_robin.time == (U16)os_time) {
mecatro_prod 0:4a2c9c1f5b9e 74 /* Round Robin timeout has expired, swap Robin tasks. */
mecatro_prod 0:4a2c9c1f5b9e 75 os_robin.task = NULL;
mecatro_prod 0:4a2c9c1f5b9e 76 p_new = rt_get_first (&os_rdy);
mecatro_prod 0:4a2c9c1f5b9e 77 rt_put_prio ((P_XCB)&os_rdy, p_new);
mecatro_prod 0:4a2c9c1f5b9e 78 }
mecatro_prod 0:4a2c9c1f5b9e 79 }
mecatro_prod 0:4a2c9c1f5b9e 80
mecatro_prod 0:4a2c9c1f5b9e 81 /*----------------------------------------------------------------------------
mecatro_prod 0:4a2c9c1f5b9e 82 * end of file
mecatro_prod 0:4a2c9c1f5b9e 83 *---------------------------------------------------------------------------*/
mecatro_prod 0:4a2c9c1f5b9e 84