Diff: rtx_ca/rt_Semaphore.c

Revision:

49:77c8e4604045

Parent:

48:e9a2c7cb57a4

Child:

50:64a5202c3676

--- a/rtx_ca/rt_Semaphore.c	Thu Nov 06 11:00:33 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,191 +0,0 @@
-/*----------------------------------------------------------------------------
- *      RL-ARM - RTX
- *----------------------------------------------------------------------------
- *      Name:    RT_SEMAPHORE.C
- *      Purpose: Implements binary and counting semaphores
- *      Rev.:    V4.60
- *----------------------------------------------------------------------------
- *
- * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
- * All rights reserved.
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *  - Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *  - Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *  - Neither the name of ARM  nor the names of its contributors may be used 
- *    to endorse or promote products derived from this software without 
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *---------------------------------------------------------------------------*/
-
-#include "rt_TypeDef.h"
-#include "RTX_Config.h"
-#include "rt_System.h"
-#include "rt_List.h"
-#include "rt_Task.h"
-#include "rt_Semaphore.h"
-#ifdef __CORTEX_A9
-#include "rt_HAL_CA.h"
-#else
-#include "rt_HAL_CM.h"
-#endif
-
-
-/*----------------------------------------------------------------------------
- *      Functions
- *---------------------------------------------------------------------------*/
-
-
-/*--------------------------- rt_sem_init -----------------------------------*/
-
-void rt_sem_init (OS_ID semaphore, U16 token_count) {
-  /* Initialize a semaphore */
-  P_SCB p_SCB = semaphore;
-
-  p_SCB->cb_type = SCB;
-  p_SCB->p_lnk  = NULL;
-  p_SCB->tokens = token_count;
-}
-
-
-/*--------------------------- rt_sem_delete ---------------------------------*/
-
-#ifdef __CMSIS_RTOS
-OS_RESULT rt_sem_delete (OS_ID semaphore) {
-  /* Delete semaphore */
-  P_SCB p_SCB = semaphore;
-  P_TCB p_TCB;
-
-  __DMB();
-  while (p_SCB->p_lnk != NULL) {
-    /* A task is waiting for token */
-    p_TCB = rt_get_first ((P_XCB)p_SCB);
-    rt_ret_val(p_TCB, 0);
-    rt_rmv_dly(p_TCB);
-    p_TCB->state = READY;
-    rt_put_prio (&os_rdy, p_TCB);
-  }
-
-  if (os_rdy.p_lnk && (os_rdy.p_lnk->prio > os_tsk.run->prio)) {
-    /* preempt running task */
-    rt_put_prio (&os_rdy, os_tsk.run);
-    os_tsk.run->state = READY;
-    rt_dispatch (NULL);
-  }
-
-  p_SCB->cb_type = 0;
-
-  return (OS_R_OK);
-}
-#endif
-
-
-/*--------------------------- rt_sem_send -----------------------------------*/
-
-OS_RESULT rt_sem_send (OS_ID semaphore) {
-  /* Return a token to semaphore */
-  P_SCB p_SCB = semaphore;
-  P_TCB p_TCB;
-
-  __DMB();
-  if (p_SCB->p_lnk != NULL) {
-    /* A task is waiting for token */
-    p_TCB = rt_get_first ((P_XCB)p_SCB);
-#ifdef __CMSIS_RTOS
-    rt_ret_val(p_TCB, 1);
-#else
-    rt_ret_val(p_TCB, OS_R_SEM);
-#endif
-    rt_rmv_dly (p_TCB);
-    rt_dispatch (p_TCB);
-  }
-  else {
-    /* Store token. */
-    p_SCB->tokens++;
-  }
-  return (OS_R_OK);
-}
-
-
-/*--------------------------- rt_sem_wait -----------------------------------*/
-
-OS_RESULT rt_sem_wait (OS_ID semaphore, U16 timeout) {
-  /* Obtain a token; possibly wait for it */
-  P_SCB p_SCB = semaphore;
-
-  if (p_SCB->tokens) {
-    p_SCB->tokens--;
-    __DMB();
-    return (OS_R_OK);
-  }
-  /* No token available: wait for one */
-  if (timeout == 0) {
-    return (OS_R_TMO);
-  }
-  if (p_SCB->p_lnk != NULL) {
-    rt_put_prio ((P_XCB)p_SCB, os_tsk.run);
-  }
-  else {
-    p_SCB->p_lnk = os_tsk.run;
-    os_tsk.run->p_lnk = NULL;
-    os_tsk.run->p_rlnk = (P_TCB)p_SCB;
-  }
-  rt_block(timeout, WAIT_SEM);
-  return (OS_R_TMO);
-}
-
-
-/*--------------------------- isr_sem_send ----------------------------------*/
-
-void isr_sem_send (OS_ID semaphore) {
-  /* Same function as "os_sem"send", but to be called by ISRs */
-  P_SCB p_SCB = semaphore;
-
-  rt_psq_enq (p_SCB, 0);
-  rt_psh_req ();
-}
-
-
-/*--------------------------- rt_sem_psh ------------------------------------*/
-
-void rt_sem_psh (P_SCB p_CB) {
-  /* Check if task has to be waken up */
-  P_TCB p_TCB;
-
-  __DMB();
-  if (p_CB->p_lnk != NULL) {
-    /* A task is waiting for token */
-    p_TCB = rt_get_first ((P_XCB)p_CB);
-    rt_rmv_dly (p_TCB);
-    p_TCB->state   = READY;
-#ifdef __CMSIS_RTOS
-    rt_ret_val(p_TCB, 1);
-#else
-    rt_ret_val(p_TCB, OS_R_SEM);
-#endif
-    rt_put_prio (&os_rdy, p_TCB);
-  }
-  else {
-    /* Store token */
-    p_CB->tokens++;
-  }
-}
-
-/*----------------------------------------------------------------------------
- * end of file
- *---------------------------------------------------------------------------*/
-