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设定每次执行的定时任务的最大数量

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This commit is contained in:
fslongjin 2022-07-11 10:36:33 +08:00
parent f4891cc8a3
commit ee0b5ed3fd
2 changed files with 11 additions and 5 deletions
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12
kernel/driver/timers/timer.c
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@ -7,6 +7,9 @@
struct timer_func_list_t timer_func_head;
// 定时器循环阈值，每次最大执行10个定时器任务
#define TIMER_RUN_CYCLE_THRESHOLD 10
void test_timer()
{
printk_color(ORANGE, BLACK, "(test_timer)");
@ -29,17 +32,20 @@ void do_timer_softirq(void *data)
{
struct timer_func_list_t *tmp = container_of(list_next(&timer_func_head.list), struct timer_func_list_t, list);
int cycle_count = 0;
while ((!list_empty(&timer_func_head.list)) && (tmp->expire_jiffies <= timer_jiffies))
{
timer_func_del(tmp);
tmp->func(tmp->data);
kfree(tmp);
++cycle_count;
// 当前定时器达到阈值
if(cycle_count == TIMER_RUN_CYCLE_THRESHOLD)
break;
tmp = container_of(list_next(&timer_func_head.list), struct timer_func_list_t, list);
}
}
/**

2
kernel/driver/timers/timer.h
View File

@ -7,7 +7,7 @@
uint64_t volatile timer_jiffies = 0; // 系统时钟计数
// 计算接下来n毫秒对应的系统时间片
#define cal_next_n_ms_jiffies(expire_ms) (timer_jiffies + expire_ms / 5 + (expire_ms % HPET0_INTERVAL ? 1 : 0))
#define cal_next_n_ms_jiffies(expire_ms) (timer_jiffies + expire_ms / 5 + ((expire_ms % HPET0_INTERVAL) ? 1 : 0))
void timer_init();