Yasushi TAUCHI / Mbed 2 deprecated giken9_HTMLServer_Sample

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Dependencies:   EthernetInterface HttpServer TextLCD mbed-rpc mbed-rtos mbed Socket lwip-eth lwip-sys lwip

mbed-rtos/rtx/rt_System.c@0:7766f6712673, 2014-03-12 (annotated)

Committer:
yueee_yt
Date:
Wed Mar 12 04:19:54 2014 +0000
Revision:
0:7766f6712673
???????????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yueee_yt 0:7766f6712673 1 /*----------------------------------------------------------------------------
yueee_yt 0:7766f6712673 2 * RL-ARM - RTX
yueee_yt 0:7766f6712673 3 *----------------------------------------------------------------------------
yueee_yt 0:7766f6712673 4 * Name: RT_SYSTEM.C
yueee_yt 0:7766f6712673 5 * Purpose: System Task Manager
yueee_yt 0:7766f6712673 6 * Rev.: V4.60
yueee_yt 0:7766f6712673 7 *----------------------------------------------------------------------------
yueee_yt 0:7766f6712673 8 *
yueee_yt 0:7766f6712673 9 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
yueee_yt 0:7766f6712673 10 * All rights reserved.
yueee_yt 0:7766f6712673 11 * Redistribution and use in source and binary forms, with or without
yueee_yt 0:7766f6712673 12 * modification, are permitted provided that the following conditions are met:
yueee_yt 0:7766f6712673 13 * - Redistributions of source code must retain the above copyright
yueee_yt 0:7766f6712673 14 * notice, this list of conditions and the following disclaimer.
yueee_yt 0:7766f6712673 15 * - Redistributions in binary form must reproduce the above copyright
yueee_yt 0:7766f6712673 16 * notice, this list of conditions and the following disclaimer in the
yueee_yt 0:7766f6712673 17 * documentation and/or other materials provided with the distribution.
yueee_yt 0:7766f6712673 18 * - Neither the name of ARM nor the names of its contributors may be used
yueee_yt 0:7766f6712673 19 * to endorse or promote products derived from this software without
yueee_yt 0:7766f6712673 20 * specific prior written permission.
yueee_yt 0:7766f6712673 21 *
yueee_yt 0:7766f6712673 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
yueee_yt 0:7766f6712673 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
yueee_yt 0:7766f6712673 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
yueee_yt 0:7766f6712673 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
yueee_yt 0:7766f6712673 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
yueee_yt 0:7766f6712673 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
yueee_yt 0:7766f6712673 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
yueee_yt 0:7766f6712673 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
yueee_yt 0:7766f6712673 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
yueee_yt 0:7766f6712673 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
yueee_yt 0:7766f6712673 32 * POSSIBILITY OF SUCH DAMAGE.
yueee_yt 0:7766f6712673 33 *---------------------------------------------------------------------------*/
yueee_yt 0:7766f6712673 34
yueee_yt 0:7766f6712673 35 #include "rt_TypeDef.h"
yueee_yt 0:7766f6712673 36 #include "RTX_Conf.h"
yueee_yt 0:7766f6712673 37 #include "rt_Task.h"
yueee_yt 0:7766f6712673 38 #include "rt_System.h"
yueee_yt 0:7766f6712673 39 #include "rt_Event.h"
yueee_yt 0:7766f6712673 40 #include "rt_List.h"
yueee_yt 0:7766f6712673 41 #include "rt_Mailbox.h"
yueee_yt 0:7766f6712673 42 #include "rt_Semaphore.h"
yueee_yt 0:7766f6712673 43 #include "rt_Time.h"
yueee_yt 0:7766f6712673 44 #include "rt_Robin.h"
yueee_yt 0:7766f6712673 45 #include "rt_HAL_CM.h"
yueee_yt 0:7766f6712673 46
yueee_yt 0:7766f6712673 47 /*----------------------------------------------------------------------------
yueee_yt 0:7766f6712673 48 * Global Variables
yueee_yt 0:7766f6712673 49 *---------------------------------------------------------------------------*/
yueee_yt 0:7766f6712673 50
yueee_yt 0:7766f6712673 51 int os_tick_irqn;
yueee_yt 0:7766f6712673 52
yueee_yt 0:7766f6712673 53 /*----------------------------------------------------------------------------
yueee_yt 0:7766f6712673 54 * Local Variables
yueee_yt 0:7766f6712673 55 *---------------------------------------------------------------------------*/
yueee_yt 0:7766f6712673 56
yueee_yt 0:7766f6712673 57 static volatile BIT os_lock;
yueee_yt 0:7766f6712673 58 static volatile BIT os_psh_flag;
yueee_yt 0:7766f6712673 59 static U8 pend_flags;
yueee_yt 0:7766f6712673 60
yueee_yt 0:7766f6712673 61 /*----------------------------------------------------------------------------
yueee_yt 0:7766f6712673 62 * Global Functions
yueee_yt 0:7766f6712673 63 *---------------------------------------------------------------------------*/
yueee_yt 0:7766f6712673 64
yueee_yt 0:7766f6712673 65 #if defined (__CC_ARM)
yueee_yt 0:7766f6712673 66 __asm void $$RTX$$version (void) {
yueee_yt 0:7766f6712673 67 /* Export a version number symbol for a version control. */
yueee_yt 0:7766f6712673 68
yueee_yt 0:7766f6712673 69 EXPORT __RL_RTX_VER
yueee_yt 0:7766f6712673 70
yueee_yt 0:7766f6712673 71 __RL_RTX_VER EQU 0x450
yueee_yt 0:7766f6712673 72 }
yueee_yt 0:7766f6712673 73 #endif
yueee_yt 0:7766f6712673 74
yueee_yt 0:7766f6712673 75
yueee_yt 0:7766f6712673 76 /*--------------------------- rt_suspend ------------------------------------*/
yueee_yt 0:7766f6712673 77 U32 rt_suspend (void) {
yueee_yt 0:7766f6712673 78 /* Suspend OS scheduler */
yueee_yt 0:7766f6712673 79 U32 delta = 0xFFFF;
yueee_yt 0:7766f6712673 80
yueee_yt 0:7766f6712673 81 rt_tsk_lock();
yueee_yt 0:7766f6712673 82
yueee_yt 0:7766f6712673 83 if (os_dly.p_dlnk) {
yueee_yt 0:7766f6712673 84 delta = os_dly.delta_time;
yueee_yt 0:7766f6712673 85 }
yueee_yt 0:7766f6712673 86 #ifndef __CMSIS_RTOS
yueee_yt 0:7766f6712673 87 if (os_tmr.next) {
yueee_yt 0:7766f6712673 88 if (os_tmr.tcnt < delta) delta = os_tmr.tcnt;
yueee_yt 0:7766f6712673 89 }
yueee_yt 0:7766f6712673 90 #endif
yueee_yt 0:7766f6712673 91
yueee_yt 0:7766f6712673 92 return (delta);
yueee_yt 0:7766f6712673 93 }
yueee_yt 0:7766f6712673 94
yueee_yt 0:7766f6712673 95
yueee_yt 0:7766f6712673 96 /*--------------------------- rt_resume -------------------------------------*/
yueee_yt 0:7766f6712673 97 void rt_resume (U32 sleep_time) {
yueee_yt 0:7766f6712673 98 /* Resume OS scheduler after suspend */
yueee_yt 0:7766f6712673 99 P_TCB next;
yueee_yt 0:7766f6712673 100 U32 delta;
yueee_yt 0:7766f6712673 101
yueee_yt 0:7766f6712673 102 os_tsk.run->state = READY;
yueee_yt 0:7766f6712673 103 rt_put_rdy_first (os_tsk.run);
yueee_yt 0:7766f6712673 104
yueee_yt 0:7766f6712673 105 os_robin.task = NULL;
yueee_yt 0:7766f6712673 106
yueee_yt 0:7766f6712673 107 /* Update delays. */
yueee_yt 0:7766f6712673 108 if (os_dly.p_dlnk) {
yueee_yt 0:7766f6712673 109 delta = sleep_time;
yueee_yt 0:7766f6712673 110 if (delta >= os_dly.delta_time) {
yueee_yt 0:7766f6712673 111 delta -= os_dly.delta_time;
yueee_yt 0:7766f6712673 112 os_time += os_dly.delta_time;
yueee_yt 0:7766f6712673 113 os_dly.delta_time = 1;
yueee_yt 0:7766f6712673 114 while (os_dly.p_dlnk) {
yueee_yt 0:7766f6712673 115 rt_dec_dly();
yueee_yt 0:7766f6712673 116 if (delta == 0) break;
yueee_yt 0:7766f6712673 117 delta--;
yueee_yt 0:7766f6712673 118 os_time++;
yueee_yt 0:7766f6712673 119 }
yueee_yt 0:7766f6712673 120 } else {
yueee_yt 0:7766f6712673 121 os_time += delta;
yueee_yt 0:7766f6712673 122 os_dly.delta_time -= delta;
yueee_yt 0:7766f6712673 123 }
yueee_yt 0:7766f6712673 124 } else {
yueee_yt 0:7766f6712673 125 os_time += sleep_time;
yueee_yt 0:7766f6712673 126 }
yueee_yt 0:7766f6712673 127
yueee_yt 0:7766f6712673 128 #ifndef __CMSIS_RTOS
yueee_yt 0:7766f6712673 129 /* Check the user timers. */
yueee_yt 0:7766f6712673 130 if (os_tmr.next) {
yueee_yt 0:7766f6712673 131 delta = sleep_time;
yueee_yt 0:7766f6712673 132 if (delta >= os_tmr.tcnt) {
yueee_yt 0:7766f6712673 133 delta -= os_tmr.tcnt;
yueee_yt 0:7766f6712673 134 os_tmr.tcnt = 1;
yueee_yt 0:7766f6712673 135 while (os_tmr.next) {
yueee_yt 0:7766f6712673 136 rt_tmr_tick();
yueee_yt 0:7766f6712673 137 if (delta == 0) break;
yueee_yt 0:7766f6712673 138 delta--;
yueee_yt 0:7766f6712673 139 }
yueee_yt 0:7766f6712673 140 } else {
yueee_yt 0:7766f6712673 141 os_tmr.tcnt -= delta;
yueee_yt 0:7766f6712673 142 }
yueee_yt 0:7766f6712673 143 }
yueee_yt 0:7766f6712673 144 #endif
yueee_yt 0:7766f6712673 145
yueee_yt 0:7766f6712673 146 /* Switch back to highest ready task */
yueee_yt 0:7766f6712673 147 next = rt_get_first (&os_rdy);
yueee_yt 0:7766f6712673 148 rt_switch_req (next);
yueee_yt 0:7766f6712673 149
yueee_yt 0:7766f6712673 150 rt_tsk_unlock();
yueee_yt 0:7766f6712673 151 }
yueee_yt 0:7766f6712673 152
yueee_yt 0:7766f6712673 153
yueee_yt 0:7766f6712673 154 /*--------------------------- rt_tsk_lock -----------------------------------*/
yueee_yt 0:7766f6712673 155
yueee_yt 0:7766f6712673 156 void rt_tsk_lock (void) {
yueee_yt 0:7766f6712673 157 /* Prevent task switching by locking out scheduler */
yueee_yt 0:7766f6712673 158 if (os_tick_irqn < 0) {
yueee_yt 0:7766f6712673 159 OS_LOCK();
yueee_yt 0:7766f6712673 160 os_lock = __TRUE;
yueee_yt 0:7766f6712673 161 OS_UNPEND (&pend_flags);
yueee_yt 0:7766f6712673 162 } else {
yueee_yt 0:7766f6712673 163 OS_X_LOCK(os_tick_irqn);
yueee_yt 0:7766f6712673 164 os_lock = __TRUE;
yueee_yt 0:7766f6712673 165 OS_X_UNPEND (&pend_flags);
yueee_yt 0:7766f6712673 166 }
yueee_yt 0:7766f6712673 167 }
yueee_yt 0:7766f6712673 168
yueee_yt 0:7766f6712673 169
yueee_yt 0:7766f6712673 170 /*--------------------------- rt_tsk_unlock ---------------------------------*/
yueee_yt 0:7766f6712673 171
yueee_yt 0:7766f6712673 172 void rt_tsk_unlock (void) {
yueee_yt 0:7766f6712673 173 /* Unlock scheduler and re-enable task switching */
yueee_yt 0:7766f6712673 174 if (os_tick_irqn < 0) {
yueee_yt 0:7766f6712673 175 OS_UNLOCK();
yueee_yt 0:7766f6712673 176 os_lock = __FALSE;
yueee_yt 0:7766f6712673 177 OS_PEND (pend_flags, os_psh_flag);
yueee_yt 0:7766f6712673 178 os_psh_flag = __FALSE;
yueee_yt 0:7766f6712673 179 } else {
yueee_yt 0:7766f6712673 180 OS_X_UNLOCK(os_tick_irqn);
yueee_yt 0:7766f6712673 181 os_lock = __FALSE;
yueee_yt 0:7766f6712673 182 OS_X_PEND (pend_flags, os_psh_flag);
yueee_yt 0:7766f6712673 183 os_psh_flag = __FALSE;
yueee_yt 0:7766f6712673 184 }
yueee_yt 0:7766f6712673 185 }
yueee_yt 0:7766f6712673 186
yueee_yt 0:7766f6712673 187
yueee_yt 0:7766f6712673 188 /*--------------------------- rt_psh_req ------------------------------------*/
yueee_yt 0:7766f6712673 189
yueee_yt 0:7766f6712673 190 void rt_psh_req (void) {
yueee_yt 0:7766f6712673 191 /* Initiate a post service handling request if required. */
yueee_yt 0:7766f6712673 192 if (os_lock == __FALSE) {
yueee_yt 0:7766f6712673 193 OS_PEND_IRQ ();
yueee_yt 0:7766f6712673 194 }
yueee_yt 0:7766f6712673 195 else {
yueee_yt 0:7766f6712673 196 os_psh_flag = __TRUE;
yueee_yt 0:7766f6712673 197 }
yueee_yt 0:7766f6712673 198 }
yueee_yt 0:7766f6712673 199
yueee_yt 0:7766f6712673 200
yueee_yt 0:7766f6712673 201 /*--------------------------- rt_pop_req ------------------------------------*/
yueee_yt 0:7766f6712673 202
yueee_yt 0:7766f6712673 203 void rt_pop_req (void) {
yueee_yt 0:7766f6712673 204 /* Process an ISR post service requests. */
yueee_yt 0:7766f6712673 205 struct OS_XCB *p_CB;
yueee_yt 0:7766f6712673 206 P_TCB next;
yueee_yt 0:7766f6712673 207 U32 idx;
yueee_yt 0:7766f6712673 208
yueee_yt 0:7766f6712673 209 os_tsk.run->state = READY;
yueee_yt 0:7766f6712673 210 rt_put_rdy_first (os_tsk.run);
yueee_yt 0:7766f6712673 211
yueee_yt 0:7766f6712673 212 idx = os_psq->last;
yueee_yt 0:7766f6712673 213 while (os_psq->count) {
yueee_yt 0:7766f6712673 214 p_CB = os_psq->q[idx].id;
yueee_yt 0:7766f6712673 215 if (p_CB->cb_type == TCB) {
yueee_yt 0:7766f6712673 216 /* Is of TCB type */
yueee_yt 0:7766f6712673 217 rt_evt_psh ((P_TCB)p_CB, (U16)os_psq->q[idx].arg);
yueee_yt 0:7766f6712673 218 }
yueee_yt 0:7766f6712673 219 else if (p_CB->cb_type == MCB) {
yueee_yt 0:7766f6712673 220 /* Is of MCB type */
yueee_yt 0:7766f6712673 221 rt_mbx_psh ((P_MCB)p_CB, (void *)os_psq->q[idx].arg);
yueee_yt 0:7766f6712673 222 }
yueee_yt 0:7766f6712673 223 else {
yueee_yt 0:7766f6712673 224 /* Must be of SCB type */
yueee_yt 0:7766f6712673 225 rt_sem_psh ((P_SCB)p_CB);
yueee_yt 0:7766f6712673 226 }
yueee_yt 0:7766f6712673 227 if (++idx == os_psq->size) idx = 0;
yueee_yt 0:7766f6712673 228 rt_dec (&os_psq->count);
yueee_yt 0:7766f6712673 229 }
yueee_yt 0:7766f6712673 230 os_psq->last = idx;
yueee_yt 0:7766f6712673 231
yueee_yt 0:7766f6712673 232 next = rt_get_first (&os_rdy);
yueee_yt 0:7766f6712673 233 rt_switch_req (next);
yueee_yt 0:7766f6712673 234 }
yueee_yt 0:7766f6712673 235
yueee_yt 0:7766f6712673 236
yueee_yt 0:7766f6712673 237 /*--------------------------- os_tick_init ----------------------------------*/
yueee_yt 0:7766f6712673 238
yueee_yt 0:7766f6712673 239 __weak int os_tick_init (void) {
yueee_yt 0:7766f6712673 240 /* Initialize SysTick timer as system tick timer. */
yueee_yt 0:7766f6712673 241 rt_systick_init ();
yueee_yt 0:7766f6712673 242 return (-1); /* Return IRQ number of SysTick timer */
yueee_yt 0:7766f6712673 243 }
yueee_yt 0:7766f6712673 244
yueee_yt 0:7766f6712673 245
yueee_yt 0:7766f6712673 246 /*--------------------------- os_tick_irqack --------------------------------*/
yueee_yt 0:7766f6712673 247
yueee_yt 0:7766f6712673 248 __weak void os_tick_irqack (void) {
yueee_yt 0:7766f6712673 249 /* Acknowledge timer interrupt. */
yueee_yt 0:7766f6712673 250 }
yueee_yt 0:7766f6712673 251
yueee_yt 0:7766f6712673 252
yueee_yt 0:7766f6712673 253 /*--------------------------- rt_systick ------------------------------------*/
yueee_yt 0:7766f6712673 254
yueee_yt 0:7766f6712673 255 extern void sysTimerTick(void);
yueee_yt 0:7766f6712673 256
yueee_yt 0:7766f6712673 257 void rt_systick (void) {
yueee_yt 0:7766f6712673 258 /* Check for system clock update, suspend running task. */
yueee_yt 0:7766f6712673 259 P_TCB next;
yueee_yt 0:7766f6712673 260
yueee_yt 0:7766f6712673 261 os_tsk.run->state = READY;
yueee_yt 0:7766f6712673 262 rt_put_rdy_first (os_tsk.run);
yueee_yt 0:7766f6712673 263
yueee_yt 0:7766f6712673 264 /* Check Round Robin timeout. */
yueee_yt 0:7766f6712673 265 rt_chk_robin ();
yueee_yt 0:7766f6712673 266
yueee_yt 0:7766f6712673 267 /* Update delays. */
yueee_yt 0:7766f6712673 268 os_time++;
yueee_yt 0:7766f6712673 269 rt_dec_dly ();
yueee_yt 0:7766f6712673 270
yueee_yt 0:7766f6712673 271 /* Check the user timers. */
yueee_yt 0:7766f6712673 272 #ifdef __CMSIS_RTOS
yueee_yt 0:7766f6712673 273 sysTimerTick();
yueee_yt 0:7766f6712673 274 #else
yueee_yt 0:7766f6712673 275 rt_tmr_tick ();
yueee_yt 0:7766f6712673 276 #endif
yueee_yt 0:7766f6712673 277
yueee_yt 0:7766f6712673 278 /* Switch back to highest ready task */
yueee_yt 0:7766f6712673 279 next = rt_get_first (&os_rdy);
yueee_yt 0:7766f6712673 280 rt_switch_req (next);
yueee_yt 0:7766f6712673 281 }
yueee_yt 0:7766f6712673 282
yueee_yt 0:7766f6712673 283 /*--------------------------- rt_stk_check ----------------------------------*/
yueee_yt 0:7766f6712673 284 __weak void rt_stk_check (void) {
yueee_yt 0:7766f6712673 285 /* Check for stack overflow. */
yueee_yt 0:7766f6712673 286 if (os_tsk.run->task_id == 0x01) {
yueee_yt 0:7766f6712673 287 // TODO: For the main thread the check should be done against the main heap pointer
yueee_yt 0:7766f6712673 288 } else {
yueee_yt 0:7766f6712673 289 if ((os_tsk.run->tsk_stack < (U32)os_tsk.run->stack) ||
yueee_yt 0:7766f6712673 290 (os_tsk.run->stack[0] != MAGIC_WORD)) {
yueee_yt 0:7766f6712673 291 os_error (OS_ERR_STK_OVF);
yueee_yt 0:7766f6712673 292 }
yueee_yt 0:7766f6712673 293 }
yueee_yt 0:7766f6712673 294 }
yueee_yt 0:7766f6712673 295
yueee_yt 0:7766f6712673 296 /*----------------------------------------------------------------------------
yueee_yt 0:7766f6712673 297 * end of file
yueee_yt 0:7766f6712673 298 *---------------------------------------------------------------------------*/
yueee_yt 0:7766f6712673 299