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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2024-04-28 Shell Add new wait_flags() & wakeup_by_errno() API
* 2024-10-24 yekai Add C++ support
*/
#ifndef COMPLETION_H_
#define COMPLETION_H_
#include <rtdef.h>
#include <rtconfig.h>
/**
* RT-Completion - A Tiny(resource-constrained) & Rapid(lockless) IPC Primitive
*
* It's an IPC using one pointer word with the encoding:
*
* BIT | MAX-1 ----------------- 1 | 0 |
* CONTENT | suspended_thread & ~1 | completed flag |
*/
struct rt_completion
{
/* suspended thread, and completed flag */
rt_atomic_t susp_thread_n_flag;
};
#define RT_COMPLETION_INIT(comp) {0}
#ifdef __cplusplus
extern "C" {
#endif
void rt_completion_init(struct rt_completion *completion);
rt_err_t rt_completion_wait(struct rt_completion *completion,
rt_int32_t timeout);
rt_err_t rt_completion_wait_noisr(struct rt_completion *completion,
rt_int32_t timeout);
rt_err_t rt_completion_wait_flags(struct rt_completion *completion,
rt_int32_t timeout, int suspend_flag);
rt_err_t rt_completion_wait_flags_noisr(struct rt_completion *completion,
rt_int32_t timeout, int suspend_flag);
void rt_completion_done(struct rt_completion *completion);
rt_err_t rt_completion_wakeup(struct rt_completion *completion);
rt_err_t rt_completion_wakeup_by_errno(struct rt_completion *completion, rt_err_t error);
#ifdef __cplusplus
}
#endif
#endif
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