diff options
Diffstat (limited to 'libraries/mbed/rtos/rtx/TARGET_CORTEX_M/rt_Semaphore.c')
| -rw-r--r-- | libraries/mbed/rtos/rtx/TARGET_CORTEX_M/rt_Semaphore.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/libraries/mbed/rtos/rtx/TARGET_CORTEX_M/rt_Semaphore.c b/libraries/mbed/rtos/rtx/TARGET_CORTEX_M/rt_Semaphore.c deleted file mode 100644 index 93ff2bf..0000000 --- a/libraries/mbed/rtos/rtx/TARGET_CORTEX_M/rt_Semaphore.c +++ /dev/null @@ -1,183 +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_Conf.h" -#include "rt_System.h" -#include "rt_List.h" -#include "rt_Task.h" -#include "rt_Semaphore.h" -#include "rt_HAL_CM.h" - - -/*---------------------------------------------------------------------------- - * 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; - - 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; - - 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--; - 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; - - 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 - *---------------------------------------------------------------------------*/ - |