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2813126e31
* 引入cargo * 取消对Cargo.lock的跟踪 * 解决vscode报错问题 * new: rust的代码能够调用c语言的printk_color * 1、将原本run.sh的工作拆解，变为几个不同的make命令 2、在docker镜像中编译rust * 更改workflow * update workflow * new: 解决workflow无法通过编译的问题
87 lines
1.9 KiB
C
87 lines
1.9 KiB
C
#include "sleep.h"
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#include <common/errno.h>
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#include <time/timer.h>
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#include <process/process.h>
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#include <sched/sched.h>
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#include <mm/slab.h>
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#include <common/cpu.h>
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#include <common/glib.h>
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/**
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* @brief nanosleep定时事件到期后，唤醒指定的进程
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*
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* @param pcb 待唤醒的进程的pcb
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*/
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void nanosleep_handler(void *pcb)
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{
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process_wakeup((struct process_control_block *)pcb);
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}
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/**
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* @brief 休眠指定时间
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*
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* @param rqtp 指定休眠的时间
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* @param rmtp 返回的剩余休眠时间
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* @return int
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*/
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int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
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{
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if (rqtp->tv_nsec < 0 || rqtp->tv_nsec >= 1000000000)
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return -EINVAL;
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// 对于小于500us的时间，使用spin/rdtsc来进行定时
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if (rqtp->tv_nsec < 500000)
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{
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uint64_t expired_tsc = rdtsc() + (((uint64_t)rqtp->tv_nsec) * Cpu_tsc_freq) / 1000000000;
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while (rdtsc() < expired_tsc)
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;
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if (rmtp != NULL)
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{
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rmtp->tv_nsec = 0;
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rmtp->tv_sec = 0;
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}
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return 0;
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}
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// 增加定时任务
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struct timer_func_list_t *sleep_task = (struct timer_func_list_t *)kmalloc(sizeof(struct timer_func_list_t), 0);
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memset(sleep_task, 0, sizeof(struct timer_func_list_t));
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timer_func_init_us(sleep_task, &nanosleep_handler, (void *)current_pcb, rqtp->tv_nsec / 1000);
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timer_func_add(sleep_task);
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current_pcb->state = PROC_INTERRUPTIBLE;
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current_pcb->flags |= PF_NEED_SCHED;
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sched();
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// todo: 增加信号唤醒的功能后，设置rmtp
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if (rmtp != NULL)
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{
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rmtp->tv_nsec = 0;
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rmtp->tv_sec = 0;
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}
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return 0;
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}
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/**
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* @brief 睡眠指定时间
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*
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* @param usec 微秒
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* @return int
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*/
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int usleep(useconds_t usec)
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{
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struct timespec ts = {
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tv_sec : (long int)(usec / 1000000),
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tv_nsec : (long int)(usec % 1000000) * 1000UL
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};
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return nanosleep(&ts, NULL);
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}
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