雄介 太田 / mbed-rtos

mbed-rtos

Dependents:   YOZAKURA_ARM

Fork of mbed-rtos by mbed official

rtx_ca/rt_Robin.c@48:e9a2c7cb57a4, 2014-11-06 (annotated)

Committer:
mbed_official
Date:
Thu Nov 06 11:00:33 2014 +0000
Revision:
48:e9a2c7cb57a4
Synchronized with git revision 8724eb616b6e07a3bd111d3022652eb5bbefe9b7



Full URL: https://github.com/mbedmicro/mbed/commit/8724eb616b6e07a3bd111d3022652eb5bbefe9b7/



[RZ/A1H] mbed-RZ first release

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 48:e9a2c7cb57a4 1 /*----------------------------------------------------------------------------
mbed_official 48:e9a2c7cb57a4 2 * RL-ARM - RTX
mbed_official 48:e9a2c7cb57a4 3 *----------------------------------------------------------------------------
mbed_official 48:e9a2c7cb57a4 4 * Name: RT_ROBIN.C
mbed_official 48:e9a2c7cb57a4 5 * Purpose: Round Robin Task switching
mbed_official 48:e9a2c7cb57a4 6 * Rev.: V4.60
mbed_official 48:e9a2c7cb57a4 7 *----------------------------------------------------------------------------
mbed_official 48:e9a2c7cb57a4 8 *
mbed_official 48:e9a2c7cb57a4 9 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
mbed_official 48:e9a2c7cb57a4 10 * All rights reserved.
mbed_official 48:e9a2c7cb57a4 11 * Redistribution and use in source and binary forms, with or without
mbed_official 48:e9a2c7cb57a4 12 * modification, are permitted provided that the following conditions are met:
mbed_official 48:e9a2c7cb57a4 13 * - Redistributions of source code must retain the above copyright
mbed_official 48:e9a2c7cb57a4 14 * notice, this list of conditions and the following disclaimer.
mbed_official 48:e9a2c7cb57a4 15 * - Redistributions in binary form must reproduce the above copyright
mbed_official 48:e9a2c7cb57a4 16 * notice, this list of conditions and the following disclaimer in the
mbed_official 48:e9a2c7cb57a4 17 * documentation and/or other materials provided with the distribution.
mbed_official 48:e9a2c7cb57a4 18 * - Neither the name of ARM nor the names of its contributors may be used
mbed_official 48:e9a2c7cb57a4 19 * to endorse or promote products derived from this software without
mbed_official 48:e9a2c7cb57a4 20 * specific prior written permission.
mbed_official 48:e9a2c7cb57a4 21 *
mbed_official 48:e9a2c7cb57a4 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 48:e9a2c7cb57a4 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 48:e9a2c7cb57a4 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
mbed_official 48:e9a2c7cb57a4 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
mbed_official 48:e9a2c7cb57a4 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
mbed_official 48:e9a2c7cb57a4 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
mbed_official 48:e9a2c7cb57a4 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mbed_official 48:e9a2c7cb57a4 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mbed_official 48:e9a2c7cb57a4 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
mbed_official 48:e9a2c7cb57a4 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mbed_official 48:e9a2c7cb57a4 32 * POSSIBILITY OF SUCH DAMAGE.
mbed_official 48:e9a2c7cb57a4 33 *---------------------------------------------------------------------------*/
mbed_official 48:e9a2c7cb57a4 34
mbed_official 48:e9a2c7cb57a4 35 #include "rt_TypeDef.h"
mbed_official 48:e9a2c7cb57a4 36 #include "RTX_Config.h"
mbed_official 48:e9a2c7cb57a4 37 #include "rt_List.h"
mbed_official 48:e9a2c7cb57a4 38 #include "rt_Task.h"
mbed_official 48:e9a2c7cb57a4 39 #include "rt_Time.h"
mbed_official 48:e9a2c7cb57a4 40 #include "rt_Robin.h"
mbed_official 48:e9a2c7cb57a4 41 #ifdef __CORTEX_A9
mbed_official 48:e9a2c7cb57a4 42 #include "rt_HAL_CA.h"
mbed_official 48:e9a2c7cb57a4 43 #else
mbed_official 48:e9a2c7cb57a4 44 #include "rt_HAL_CM.h"
mbed_official 48:e9a2c7cb57a4 45 #endif
mbed_official 48:e9a2c7cb57a4 46
mbed_official 48:e9a2c7cb57a4 47 /*----------------------------------------------------------------------------
mbed_official 48:e9a2c7cb57a4 48 * Global Variables
mbed_official 48:e9a2c7cb57a4 49 *---------------------------------------------------------------------------*/
mbed_official 48:e9a2c7cb57a4 50
mbed_official 48:e9a2c7cb57a4 51 struct OS_ROBIN os_robin;
mbed_official 48:e9a2c7cb57a4 52
mbed_official 48:e9a2c7cb57a4 53
mbed_official 48:e9a2c7cb57a4 54 /*----------------------------------------------------------------------------
mbed_official 48:e9a2c7cb57a4 55 * Global Functions
mbed_official 48:e9a2c7cb57a4 56 *---------------------------------------------------------------------------*/
mbed_official 48:e9a2c7cb57a4 57
mbed_official 48:e9a2c7cb57a4 58 /*--------------------------- rt_init_robin ---------------------------------*/
mbed_official 48:e9a2c7cb57a4 59
mbed_official 48:e9a2c7cb57a4 60 __weak void rt_init_robin (void) {
mbed_official 48:e9a2c7cb57a4 61 /* Initialize Round Robin variables. */
mbed_official 48:e9a2c7cb57a4 62 os_robin.task = NULL;
mbed_official 48:e9a2c7cb57a4 63 os_robin.tout = (U16)os_rrobin;
mbed_official 48:e9a2c7cb57a4 64 }
mbed_official 48:e9a2c7cb57a4 65
mbed_official 48:e9a2c7cb57a4 66 /*--------------------------- rt_chk_robin ----------------------------------*/
mbed_official 48:e9a2c7cb57a4 67
mbed_official 48:e9a2c7cb57a4 68 __weak void rt_chk_robin (void) {
mbed_official 48:e9a2c7cb57a4 69 /* Check if Round Robin timeout expired and switch to the next ready task.*/
mbed_official 48:e9a2c7cb57a4 70 P_TCB p_new;
mbed_official 48:e9a2c7cb57a4 71
mbed_official 48:e9a2c7cb57a4 72 if (os_robin.task != os_rdy.p_lnk) {
mbed_official 48:e9a2c7cb57a4 73 /* New task was suspended, reset Round Robin timeout. */
mbed_official 48:e9a2c7cb57a4 74 os_robin.task = os_rdy.p_lnk;
mbed_official 48:e9a2c7cb57a4 75 os_robin.time = (U16)os_time + os_robin.tout - 1;
mbed_official 48:e9a2c7cb57a4 76 }
mbed_official 48:e9a2c7cb57a4 77 if (os_robin.time == (U16)os_time) {
mbed_official 48:e9a2c7cb57a4 78 /* Round Robin timeout has expired, swap Robin tasks. */
mbed_official 48:e9a2c7cb57a4 79 os_robin.task = NULL;
mbed_official 48:e9a2c7cb57a4 80 p_new = rt_get_first (&os_rdy);
mbed_official 48:e9a2c7cb57a4 81 rt_put_prio ((P_XCB)&os_rdy, p_new);
mbed_official 48:e9a2c7cb57a4 82 }
mbed_official 48:e9a2c7cb57a4 83 }
mbed_official 48:e9a2c7cb57a4 84
mbed_official 48:e9a2c7cb57a4 85 /*----------------------------------------------------------------------------
mbed_official 48:e9a2c7cb57a4 86 * end of file
mbed_official 48:e9a2c7cb57a4 87 *---------------------------------------------------------------------------*/
mbed_official 48:e9a2c7cb57a4 88