X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/b91be0033265b5b6bd716bd39cb0971da41906c4..9eed27f6f2f002145667fb4abfc5e476b53630e5:/lunaix-os/kernel/process/sched.c diff --git a/lunaix-os/kernel/process/sched.c b/lunaix-os/kernel/process/sched.c index 2fa5ca6..aa75714 100644 --- a/lunaix-os/kernel/process/sched.c +++ b/lunaix-os/kernel/process/sched.c @@ -1,8 +1,9 @@ -#include -#include +#include +#include +#include -#include -#include +#include +#include #include #include @@ -79,20 +80,8 @@ run(struct proc_info* proc) { proc->state = PS_RUNNING; - /* - 将tss.esp0设置为上次调度前的esp值。 - 当处理信号时,上下文信息是不会恢复的,而是保存在用户栈中,然后直接跳转进位于用户空间的sig_wrapper进行 - 信号的处理。当用户自定义的信号处理函数返回时,sigreturn的系统调用才开始进行上下文的恢复(或者说是进行 - 另一次调度。 - 由于这中间没有进行地址空间的交换,所以第二次跳转使用的是同一个内核栈,而之前默认tss.esp0的值是永远指向最顶部 - 这样一来就有可能会覆盖更早的上下文信息(比如嵌套的信号捕获函数) - */ - - apic_done_servicing(); - - asm volatile("pushl %0\n" - "jmp switch_to\n" ::"r"(proc) - : "memory"); // kernel/asm/x86/interrupt.S + intc_notify_eos(0); + switch_context(proc); } int @@ -123,7 +112,7 @@ check_sleepers() { struct proc_info* leader = sched_ctx._procs[0]; struct proc_info *pos, *n; - time_t now = clock_systime(); + time_t now = clock_systime() / 1000; llist_for_each(pos, n, &leader->sleep.sleepers, sleep.sleepers) { if (proc_terminated(pos)) { @@ -202,12 +191,14 @@ __DEFINE_LXSYSCALL1(unsigned int, sleep, unsigned int, seconds) return 0; } + time_t systime = clock_systime() / 1000; + if (__current->sleep.wakeup_time) { - return (__current->sleep.wakeup_time - clock_systime()) / 1000U; + return (__current->sleep.wakeup_time - systime); } struct proc_info* root_proc = sched_ctx._procs[0]; - __current->sleep.wakeup_time = clock_systime() + seconds * 1000; + __current->sleep.wakeup_time = systime + seconds; if (llist_empty(&__current->sleep.sleepers)) { llist_append(&root_proc->sleep.sleepers, &__current->sleep.sleepers); @@ -224,16 +215,16 @@ __DEFINE_LXSYSCALL1(unsigned int, sleep, unsigned int, seconds) __DEFINE_LXSYSCALL1(unsigned int, alarm, unsigned int, seconds) { time_t prev_ddl = __current->sleep.alarm_time; - time_t now = clock_systime(); + time_t now = clock_systime() / 1000; - __current->sleep.alarm_time = seconds ? now + seconds * 1000 : 0; + __current->sleep.alarm_time = seconds ? now + seconds : 0; struct proc_info* root_proc = sched_ctx._procs[0]; if (llist_empty(&__current->sleep.sleepers)) { llist_append(&root_proc->sleep.sleepers, &__current->sleep.sleepers); } - return prev_ddl ? (prev_ddl - now) / 1000 : 0; + return prev_ddl ? (prev_ddl - now) : 0; } __DEFINE_LXSYSCALL1(void, exit, int, status)