mbed official / mbed-rtos

Official mbed Real Time Operating System based on the RTX implementation of the CMSIS-RTOS API open standard.

Dependents:   denki-yohou_b TestY201 Network-RTOS NTPClient_HelloWorld ... more

Deprecated

This is the mbed 2 rtos library. mbed OS 5 integrates the mbed library with mbed-rtos. With this, we have provided thread safety for all mbed APIs. If you'd like to learn about using mbed OS 5, please see the docs.

rtx/TARGET_CORTEX_M/rt_Robin.c@49:77c8e4604045, 2014-11-06 (annotated)

Committer:
mbed_official
Date:
Thu Nov 06 13:00:11 2014 +0000
Revision:
49:77c8e4604045
Child:
112:53ace74b190c
Synchronized with git revision 7b90c2ba137baaf9769219e0e8a7b8e8d1299c4f



Full URL: https://github.com/mbedmicro/mbed/commit/7b90c2ba137baaf9769219e0e8a7b8e8d1299c4f/



This target is not yet tested, so it can't be released as part of the official

SDK build for now.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 49:77c8e4604045 1 /*----------------------------------------------------------------------------
mbed_official 49:77c8e4604045 2 * RL-ARM - RTX
mbed_official 49:77c8e4604045 3 *----------------------------------------------------------------------------
mbed_official 49:77c8e4604045 4 * Name: RT_ROBIN.C
mbed_official 49:77c8e4604045 5 * Purpose: Round Robin Task switching
mbed_official 49:77c8e4604045 6 * Rev.: V4.60
mbed_official 49:77c8e4604045 7 *----------------------------------------------------------------------------
mbed_official 49:77c8e4604045 8 *
mbed_official 49:77c8e4604045 9 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
mbed_official 49:77c8e4604045 10 * All rights reserved.
mbed_official 49:77c8e4604045 11 * Redistribution and use in source and binary forms, with or without
mbed_official 49:77c8e4604045 12 * modification, are permitted provided that the following conditions are met:
mbed_official 49:77c8e4604045 13 * - Redistributions of source code must retain the above copyright
mbed_official 49:77c8e4604045 14 * notice, this list of conditions and the following disclaimer.
mbed_official 49:77c8e4604045 15 * - Redistributions in binary form must reproduce the above copyright
mbed_official 49:77c8e4604045 16 * notice, this list of conditions and the following disclaimer in the
mbed_official 49:77c8e4604045 17 * documentation and/or other materials provided with the distribution.
mbed_official 49:77c8e4604045 18 * - Neither the name of ARM nor the names of its contributors may be used
mbed_official 49:77c8e4604045 19 * to endorse or promote products derived from this software without
mbed_official 49:77c8e4604045 20 * specific prior written permission.
mbed_official 49:77c8e4604045 21 *
mbed_official 49:77c8e4604045 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 49:77c8e4604045 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 49:77c8e4604045 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
mbed_official 49:77c8e4604045 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
mbed_official 49:77c8e4604045 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
mbed_official 49:77c8e4604045 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
mbed_official 49:77c8e4604045 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
mbed_official 49:77c8e4604045 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
mbed_official 49:77c8e4604045 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
mbed_official 49:77c8e4604045 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
mbed_official 49:77c8e4604045 32 * POSSIBILITY OF SUCH DAMAGE.
mbed_official 49:77c8e4604045 33 *---------------------------------------------------------------------------*/
mbed_official 49:77c8e4604045 34
mbed_official 49:77c8e4604045 35 #include "rt_TypeDef.h"
mbed_official 49:77c8e4604045 36 #include "RTX_Conf.h"
mbed_official 49:77c8e4604045 37 #include "rt_List.h"
mbed_official 49:77c8e4604045 38 #include "rt_Task.h"
mbed_official 49:77c8e4604045 39 #include "rt_Time.h"
mbed_official 49:77c8e4604045 40 #include "rt_Robin.h"
mbed_official 49:77c8e4604045 41 #include "rt_HAL_CM.h"
mbed_official 49:77c8e4604045 42
mbed_official 49:77c8e4604045 43 /*----------------------------------------------------------------------------
mbed_official 49:77c8e4604045 44 * Global Variables
mbed_official 49:77c8e4604045 45 *---------------------------------------------------------------------------*/
mbed_official 49:77c8e4604045 46
mbed_official 49:77c8e4604045 47 struct OS_ROBIN os_robin;
mbed_official 49:77c8e4604045 48
mbed_official 49:77c8e4604045 49
mbed_official 49:77c8e4604045 50 /*----------------------------------------------------------------------------
mbed_official 49:77c8e4604045 51 * Global Functions
mbed_official 49:77c8e4604045 52 *---------------------------------------------------------------------------*/
mbed_official 49:77c8e4604045 53
mbed_official 49:77c8e4604045 54 /*--------------------------- rt_init_robin ---------------------------------*/
mbed_official 49:77c8e4604045 55
mbed_official 49:77c8e4604045 56 __weak void rt_init_robin (void) {
mbed_official 49:77c8e4604045 57 /* Initialize Round Robin variables. */
mbed_official 49:77c8e4604045 58 os_robin.task = NULL;
mbed_official 49:77c8e4604045 59 os_robin.tout = (U16)os_rrobin;
mbed_official 49:77c8e4604045 60 }
mbed_official 49:77c8e4604045 61
mbed_official 49:77c8e4604045 62 /*--------------------------- rt_chk_robin ----------------------------------*/
mbed_official 49:77c8e4604045 63
mbed_official 49:77c8e4604045 64 __weak void rt_chk_robin (void) {
mbed_official 49:77c8e4604045 65 /* Check if Round Robin timeout expired and switch to the next ready task.*/
mbed_official 49:77c8e4604045 66 P_TCB p_new;
mbed_official 49:77c8e4604045 67
mbed_official 49:77c8e4604045 68 if (os_robin.task != os_rdy.p_lnk) {
mbed_official 49:77c8e4604045 69 /* New task was suspended, reset Round Robin timeout. */
mbed_official 49:77c8e4604045 70 os_robin.task = os_rdy.p_lnk;
mbed_official 49:77c8e4604045 71 os_robin.time = (U16)os_time + os_robin.tout - 1;
mbed_official 49:77c8e4604045 72 }
mbed_official 49:77c8e4604045 73 if (os_robin.time == (U16)os_time) {
mbed_official 49:77c8e4604045 74 /* Round Robin timeout has expired, swap Robin tasks. */
mbed_official 49:77c8e4604045 75 os_robin.task = NULL;
mbed_official 49:77c8e4604045 76 p_new = rt_get_first (&os_rdy);
mbed_official 49:77c8e4604045 77 rt_put_prio ((P_XCB)&os_rdy, p_new);
mbed_official 49:77c8e4604045 78 }
mbed_official 49:77c8e4604045 79 }
mbed_official 49:77c8e4604045 80
mbed_official 49:77c8e4604045 81 /*----------------------------------------------------------------------------
mbed_official 49:77c8e4604045 82 * end of file
mbed_official 49:77c8e4604045 83 *---------------------------------------------------------------------------*/
mbed_official 49:77c8e4604045 84