forked from xuos/xiuos
147 lines
3.0 KiB
C
147 lines
3.0 KiB
C
/*
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* Copyright (c) 2020 AIIT XUOS Lab
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* XiUOS is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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* http://license.coscl.org.cn/MulanPSL2
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PSL v2 for more details.
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*/
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/**
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* @file: critical area.c
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* @brief: the critical area lock functions definitions
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* @version: 1.0
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* @author: AIIT XUOS Lab
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* @date: 2020/3/15
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*
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*/
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#ifndef __CRITICAL__AREA__
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#define __CRITICAL__AREA__
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#include <xs_isr.h>
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#include <xs_ktask_stat.h>
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#include <xs_assign.h>
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#include <xs_spinlock.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef ARCH_SMP
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HwSpinlock _CriticalLock;
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/**
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* This function will do OsAssign lock.
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*
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* @return lock
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*/
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x_base CriticalAreaLock(void)
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{
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x_base lock = 0;
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lock = DisableLocalInterrupt();
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if (Assign.smp_os_running_task[GetCpuId()]) {
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if (Assign.smp_os_running_task[GetCpuId()]->task_smp_info.critical_lock_cnt == 0) {
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Assign.assign_lock[GetCpuId()] ++;
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HwLockSpinlock(&_CriticalLock);
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}
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Assign.smp_os_running_task[GetCpuId()]->task_smp_info.critical_lock_cnt ++;
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}
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return lock;
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}
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/**
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* This function will do OsAssign unlock.
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*
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* @return lock
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*/
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void CriticalAreaUnLock(x_base lock)
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{
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if (Assign.smp_os_running_task[GetCpuId()]) {
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if (Assign.smp_os_running_task[GetCpuId()]->task_smp_info.critical_lock_cnt > 0) {
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Assign.smp_os_running_task[GetCpuId()]->task_smp_info.critical_lock_cnt --;
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}
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if (Assign.smp_os_running_task[GetCpuId()]->task_smp_info.critical_lock_cnt == 0) {
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if(Assign.assign_lock[GetCpuId()] > 0)
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Assign.assign_lock[GetCpuId()]--;
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HwUnlockSpinlock(&_CriticalLock);
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}
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}
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EnableLocalInterrupt(lock);
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}
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/**
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* This function will get critical lock level.
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*
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* @return critical lock level
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*/
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uint16 GetOsAssignLockLevel(void)
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{
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return Assign.smp_os_running_task[GetCpuId()]->task_smp_info.critical_lock_cnt;
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}
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#else
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#include <xs_hook.h>
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static uint16 KTaskOsAssignLockNest;
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/**
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* This function will get critical lock level.
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*
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* @return critical lock level
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*/
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uint16 GetOsAssignLockLevel(void) {
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return KTaskOsAssignLockNest;
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}
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inline void ResetCriticalAreaLock(void ) {
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KTaskOsAssignLockNest = 0;
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}
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/**
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* This function will do OsAssign lock.
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*
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* @return lock
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*/
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x_base CriticalAreaLock(void) {
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x_base lock;
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lock = DISABLE_INTERRUPT();
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KTaskOsAssignLockNest ++;
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return lock;
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}
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/**
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* This function will do OsAssign unlock.
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*
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* @return lock
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*/
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void CriticalAreaUnLock(x_base lock) {
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if (KTaskOsAssignLockNest >= 1) {
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KTaskOsAssignLockNest --;
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}
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ENABLE_INTERRUPT(lock);
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}
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif |