1 use crate::{ 2 exception::InterruptArch, include::bindings::bindings::enter_syscall_int, sched::SchedArch, 3 syscall::SYS_SCHED, 4 }; 5 6 use super::CurrentIrqArch; 7 8 /// @brief 若内核代码不处在中断上下文中，那么将可以使用本函数，发起一个sys_sched系统调用，然后运行调度器。 9 /// 由于只能在中断上下文中进行进程切换，因此需要发起一个系统调用SYS_SCHED。 10 #[no_mangle] 11 pub extern "C" fn sched() { 12 unsafe { 13 enter_syscall_int(SYS_SCHED as u64, 0, 0, 0, 0, 0, 0); 14 } 15 } 16 17 extern "C" { 18 fn apic_timer_init(); 19 } 20 21 pub struct X86_64SchedArch; 22 23 impl SchedArch for X86_64SchedArch { 24 fn enable_sched_local() { 25 // fixme: 这里将来可能需要更改，毕竟这个直接开关中断有点暴力。 26 unsafe { CurrentIrqArch::interrupt_enable() }; 27 } 28 29 fn disable_sched_local() { 30 unsafe { 31 CurrentIrqArch::interrupt_disable(); 32 } 33 } 34 35 fn initial_setup_sched_local() { 36 unsafe { 37 apic_timer_init(); 38 } 39 } 40 } 41