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92 lines
2.6 KiB
92 lines
2.6 KiB
5 months ago
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/******************************************************************************
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* Copyright (c) 2015-2024 jiangxiaogang<kerndev@foxmail.com>
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*
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* This file is part of KLite distribution.
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*
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* KLite is free software, you can redistribute it and/or modify it under
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* the MIT Licence.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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******************************************************************************/
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#include "internal.h"
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#include "kernel.h"
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struct cond
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{
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struct tcb_list list;
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};
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cond_t cond_create(void)
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{
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struct cond *cond;
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cond = heap_alloc(NULL, sizeof(struct cond));
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if(cond != NULL)
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{
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memset(cond, 0, sizeof(struct cond));
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}
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return (cond_t)cond;
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}
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void cond_delete(cond_t cond)
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{
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heap_free(NULL, cond);
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}
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void cond_signal(cond_t cond)
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{
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cpu_enter_critical();
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sched_tcb_wake_from((struct tcb_list *)cond);
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sched_preempt(false);
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cpu_leave_critical();
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}
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void cond_broadcast(cond_t cond)
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{
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cpu_enter_critical();
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while(sched_tcb_wake_from((struct tcb_list *)cond));
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sched_preempt(false);
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cpu_leave_critical();
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}
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void cond_wait(cond_t cond, mutex_t mutex)
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{
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cpu_enter_critical();
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sched_tcb_wait(sched_tcb_now, (struct tcb_list *)cond);
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mutex_unlock(mutex);
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sched_switch();
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cpu_leave_critical();
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mutex_lock(mutex);
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}
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uint32_t cond_timed_wait(cond_t cond, mutex_t mutex, uint32_t timeout)
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{
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cpu_enter_critical();
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if(timeout == 0)
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{
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cpu_leave_critical();
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return false;
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}
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sched_tcb_timed_wait(sched_tcb_now, (struct tcb_list *)cond, timeout);
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mutex_unlock(mutex);
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sched_switch();
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cpu_leave_critical();
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mutex_lock(mutex);
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return sched_tcb_now->timeout;
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}
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