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

Committer:
mbed_official
Date:
Thu Nov 06 13:00:11 2014 +0000
Revision:
49:77c8e4604045
Parent:
rtx_ca/rt_Robin.c@48:e9a2c7cb57a4
Child:
68:d3d0e710b443
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 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