110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/*----------------------------------------------------------------------------
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* Tencent is pleased to support the open source community by making TencentOS
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* available.
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*
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* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
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* If you have downloaded a copy of the TencentOS binary from Tencent, please
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* note that the TencentOS binary is licensed under the BSD 3-Clause License.
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*
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* If you have downloaded a copy of the TencentOS source code from Tencent,
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* please note that TencentOS source code is licensed under the BSD 3-Clause
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* License, except for the third-party components listed below which are
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* subject to different license terms. Your integration of TencentOS into your
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* own projects may require compliance with the BSD 3-Clause License, as well
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* as the other licenses applicable to the third-party components included
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* within TencentOS.
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*---------------------------------------------------------------------------*/
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#include "tos_k.h"
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#if TOS_CFG_BARRIER_EN > 0
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__API__ k_err_t tos_barrier_create(k_barrier_t *barrier, k_barrier_cnt_t count)
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{
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TOS_PTR_SANITY_CHECK(barrier);
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if (count == 0u) {
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return K_ERR_BARRIER_COUNT_INVALID;
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}
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barrier->count = count;
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pend_object_init(&barrier->pend_obj);
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TOS_OBJ_INIT(barrier, KNL_OBJ_TYPE_BARRIER);
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return K_ERR_NONE;
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}
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__API__ k_err_t tos_barrier_destroy(k_barrier_t *barrier)
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{
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TOS_CPU_CPSR_ALLOC();
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TOS_PTR_SANITY_CHECK(barrier);
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TOS_OBJ_VERIFY(barrier, KNL_OBJ_TYPE_BARRIER);
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TOS_CPU_INT_DISABLE();
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pend_wakeup_all(&barrier->pend_obj, PEND_STATE_DESTROY);
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pend_object_deinit(&barrier->pend_obj);
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TOS_OBJ_DEINIT(barrier);
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TOS_CPU_INT_ENABLE();
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knl_sched();
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return K_ERR_NONE;
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}
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__API__ k_err_t tos_barrier_pend(k_barrier_t *barrier)
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{
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TOS_CPU_CPSR_ALLOC();
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TOS_IN_IRQ_CHECK();
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TOS_PTR_SANITY_CHECK(barrier);
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TOS_OBJ_VERIFY(barrier, KNL_OBJ_TYPE_BARRIER);
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TOS_CPU_INT_DISABLE();
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if (barrier->count == 0u) {
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TOS_CPU_INT_ENABLE();
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return K_ERR_BARRIER_OVERFLOW;
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}
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if (barrier->count == (k_barrier_cnt_t)1u) {
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barrier->count = (k_barrier_cnt_t)0u;
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pend_wakeup_all(&barrier->pend_obj, PEND_STATE_POST);
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TOS_CPU_INT_ENABLE();
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return K_ERR_NONE;
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}
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if (knl_is_sched_locked()) {
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TOS_CPU_INT_ENABLE();
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return K_ERR_PEND_SCHED_LOCKED;
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}
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--barrier->count;
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pend_task_block(k_curr_task, &barrier->pend_obj, TOS_TIME_FOREVER);
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TOS_CPU_INT_ENABLE();
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knl_sched();
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return pend_state2errno(k_curr_task->pend_state);
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}
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__API__ k_err_t tos_barrier_reset(k_barrier_t *barrier, k_barrier_cnt_t count)
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{
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TOS_CPU_CPSR_ALLOC();
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TOS_PTR_SANITY_CHECK(barrier);
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TOS_OBJ_VERIFY(barrier, KNL_OBJ_TYPE_BARRIER);
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TOS_CPU_INT_DISABLE();
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barrier->count = count;
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TOS_CPU_INT_ENABLE();
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return K_ERR_NONE;
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}
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#endif /* TOS_CFG_BARRIER_EN */
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