Jonathon Fletcher / rtx

in OS_TSK, rename run as tsk_run and new as tsk_new.

rt_Robin.c@0:5f46ebd8588e, 2012-09-02 (annotated)

Committer:
jonathonfletcher
Date:
Sun Sep 02 03:24:20 2012 +0000
Revision:
0:5f46ebd8588e
in OS_TSK, rename run as tsk_run and new as tsk_new.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jonathonfletcher 0:5f46ebd8588e 1 /*----------------------------------------------------------------------------
jonathonfletcher 0:5f46ebd8588e 2 * RL-ARM - RTX
jonathonfletcher 0:5f46ebd8588e 3 *----------------------------------------------------------------------------
jonathonfletcher 0:5f46ebd8588e 4 * Name: RT_ROBIN.C
jonathonfletcher 0:5f46ebd8588e 5 * Purpose: Round Robin Task switching
jonathonfletcher 0:5f46ebd8588e 6 * Rev.: V4.50
jonathonfletcher 0:5f46ebd8588e 7 *----------------------------------------------------------------------------
jonathonfletcher 0:5f46ebd8588e 8 *
jonathonfletcher 0:5f46ebd8588e 9 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
jonathonfletcher 0:5f46ebd8588e 10 * All rights reserved.
jonathonfletcher 0:5f46ebd8588e 11 * Redistribution and use in source and binary forms, with or without
jonathonfletcher 0:5f46ebd8588e 12 * modification, are permitted provided that the following conditions are met:
jonathonfletcher 0:5f46ebd8588e 13 * - Redistributions of source code must retain the above copyright
jonathonfletcher 0:5f46ebd8588e 14 * notice, this list of conditions and the following disclaimer.
jonathonfletcher 0:5f46ebd8588e 15 * - Redistributions in binary form must reproduce the above copyright
jonathonfletcher 0:5f46ebd8588e 16 * notice, this list of conditions and the following disclaimer in the
jonathonfletcher 0:5f46ebd8588e 17 * documentation and/or other materials provided with the distribution.
jonathonfletcher 0:5f46ebd8588e 18 * - Neither the name of ARM nor the names of its contributors may be used
jonathonfletcher 0:5f46ebd8588e 19 * to endorse or promote products derived from this software without
jonathonfletcher 0:5f46ebd8588e 20 * specific prior written permission.
jonathonfletcher 0:5f46ebd8588e 21 *
jonathonfletcher 0:5f46ebd8588e 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
jonathonfletcher 0:5f46ebd8588e 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
jonathonfletcher 0:5f46ebd8588e 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
jonathonfletcher 0:5f46ebd8588e 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
jonathonfletcher 0:5f46ebd8588e 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
jonathonfletcher 0:5f46ebd8588e 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
jonathonfletcher 0:5f46ebd8588e 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
jonathonfletcher 0:5f46ebd8588e 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
jonathonfletcher 0:5f46ebd8588e 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
jonathonfletcher 0:5f46ebd8588e 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
jonathonfletcher 0:5f46ebd8588e 32 * POSSIBILITY OF SUCH DAMAGE.
jonathonfletcher 0:5f46ebd8588e 33 *---------------------------------------------------------------------------*/
jonathonfletcher 0:5f46ebd8588e 34
jonathonfletcher 0:5f46ebd8588e 35 #include "rt_TypeDef.h"
jonathonfletcher 0:5f46ebd8588e 36 #include "RTX_Config.h"
jonathonfletcher 0:5f46ebd8588e 37 #include "rt_List.h"
jonathonfletcher 0:5f46ebd8588e 38 #include "rt_Task.h"
jonathonfletcher 0:5f46ebd8588e 39 #include "rt_Time.h"
jonathonfletcher 0:5f46ebd8588e 40 #include "rt_Robin.h"
jonathonfletcher 0:5f46ebd8588e 41 #include "rt_HAL_CM.h"
jonathonfletcher 0:5f46ebd8588e 42
jonathonfletcher 0:5f46ebd8588e 43 /*----------------------------------------------------------------------------
jonathonfletcher 0:5f46ebd8588e 44 * Global Variables
jonathonfletcher 0:5f46ebd8588e 45 *---------------------------------------------------------------------------*/
jonathonfletcher 0:5f46ebd8588e 46
jonathonfletcher 0:5f46ebd8588e 47 struct OS_ROBIN os_robin;
jonathonfletcher 0:5f46ebd8588e 48
jonathonfletcher 0:5f46ebd8588e 49
jonathonfletcher 0:5f46ebd8588e 50 /*----------------------------------------------------------------------------
jonathonfletcher 0:5f46ebd8588e 51 * Global Functions
jonathonfletcher 0:5f46ebd8588e 52 *---------------------------------------------------------------------------*/
jonathonfletcher 0:5f46ebd8588e 53
jonathonfletcher 0:5f46ebd8588e 54 /*--------------------------- rt_init_robin ---------------------------------*/
jonathonfletcher 0:5f46ebd8588e 55
jonathonfletcher 0:5f46ebd8588e 56 __weak void rt_init_robin (void) {
jonathonfletcher 0:5f46ebd8588e 57 /* Initialize Round Robin variables. */
jonathonfletcher 0:5f46ebd8588e 58 os_robin.task = NULL;
jonathonfletcher 0:5f46ebd8588e 59 os_robin.tout = (U16)os_rrobin;
jonathonfletcher 0:5f46ebd8588e 60 }
jonathonfletcher 0:5f46ebd8588e 61
jonathonfletcher 0:5f46ebd8588e 62 /*--------------------------- rt_chk_robin ----------------------------------*/
jonathonfletcher 0:5f46ebd8588e 63
jonathonfletcher 0:5f46ebd8588e 64 __weak void rt_chk_robin (void) {
jonathonfletcher 0:5f46ebd8588e 65 /* Check if Round Robin timeout expired and switch to the next ready task.*/
jonathonfletcher 0:5f46ebd8588e 66 P_TCB p_new;
jonathonfletcher 0:5f46ebd8588e 67
jonathonfletcher 0:5f46ebd8588e 68 if (os_robin.task != os_rdy.p_lnk) {
jonathonfletcher 0:5f46ebd8588e 69 /* New task was suspended, reset Round Robin timeout. */
jonathonfletcher 0:5f46ebd8588e 70 os_robin.task = os_rdy.p_lnk;
jonathonfletcher 0:5f46ebd8588e 71 os_robin.time = (U16)os_time + os_robin.tout - 1;
jonathonfletcher 0:5f46ebd8588e 72 }
jonathonfletcher 0:5f46ebd8588e 73 if (os_robin.time == (U16)os_time) {
jonathonfletcher 0:5f46ebd8588e 74 /* Round Robin timeout has expired, swap Robin tasks. */
jonathonfletcher 0:5f46ebd8588e 75 os_robin.task = NULL;
jonathonfletcher 0:5f46ebd8588e 76 p_new = rt_get_first (&os_rdy);
jonathonfletcher 0:5f46ebd8588e 77 rt_put_prio ((P_XCB)&os_rdy, p_new);
jonathonfletcher 0:5f46ebd8588e 78 }
jonathonfletcher 0:5f46ebd8588e 79 }
jonathonfletcher 0:5f46ebd8588e 80
jonathonfletcher 0:5f46ebd8588e 81 /*----------------------------------------------------------------------------
jonathonfletcher 0:5f46ebd8588e 82 * end of file
jonathonfletcher 0:5f46ebd8588e 83 *---------------------------------------------------------------------------*/
jonathonfletcher 0:5f46ebd8588e 84