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/* SPDX-License-Identifier: GPL-3.0-or-later */
/* Copyright 2021 - 2022, Kim Kuparinen < kimi.h.kuparinen@gmail.com > */
/**
* @file timers.c
* Timer syscall implementations.
*/
#include <apos/timer.h>
#include <apos/uapi.h>
static ticks_t scaled_ticks(sys_arg_t ticks, sys_arg_t repeat)
{
#if __WORDSIZE == 64
UNUSED(repeat);
return ticks;
#else
return ((ticks_t)ticks << 32) + repeat;
#endif
}
SYSCALL_DEFINE0(timebase)()
{
return (struct sys_ret){ OK, secs_to_ticks(1) };
}
SYSCALL_DEFINE2(req_rel_timer)(sys_arg_t ticks, sys_arg_t repeat)
{
return (struct sys_ret){
OK,
new_rel_timer(cur_tcb()->tid,
scaled_ticks(ticks, repeat))
};
}
SYSCALL_DEFINE2(req_abs_timer)(sys_arg_t ticks, sys_arg_t repeat)
{
return (struct sys_ret){
OK,
new_abs_timer(cur_tcb()->tid,
scaled_ticks(ticks, repeat))
};
}
SYSCALL_DEFINE1(free_timer)(sys_arg_t cid)
{
struct timer *timer = find_timer(cid);
if (!timer)
return (struct sys_ret){ ERR_NF, 0 };
remove_timer(timer);
return (struct sys_ret){ OK, 0 };
}
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