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rCore-Tutorial-v3-tests
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add log info in ch9

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ch9-log
Yu Chen 3 years ago
parent 98d46ca46f
commit 9c8293e26e
26 changed files with 247 additions and 31 deletions
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13
os/Cargo.toml
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@ -14,11 +14,12 @@ bitflags = "1.2.1"
xmas-elf = "0.7.0"
volatile = "0.3"
virtio-drivers = { git = "https://github.com/rcore-os/virtio-drivers" }
k210-pac = { git = "https://github.com/wyfcyx/k210-pac" }
k210-hal = { git = "https://github.com/wyfcyx/k210-hal" }
k210-soc = { git = "https://github.com/wyfcyx/k210-soc" }
# k210-pac = { git = "https://github.com/wyfcyx/k210-pac" }
# k210-hal = { git = "https://github.com/wyfcyx/k210-hal" }
# k210-soc = { git = "https://github.com/wyfcyx/k210-soc" }
easy-fs = { path = "../easy-fs" }
#log = "0.4"
[features]
board_qemu = []
board_k210 = []
# [features]
# board_qemu = []
# board_k210 = []

3
os/Makefile
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@ -65,7 +65,8 @@ $(APPS):
kernel:
@echo Platform: $(BOARD)
@cp src/linker-$(BOARD).ld src/linker.ld
@cargo build --release --features "board_$(BOARD)"
# @cargo build --release --features "board_$(BOARD)"
@cargo build --release
@rm src/linker.ld
clean:

0
os/src/boards/k210.rs → os/src/board/k210.rs
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47
os/src/board/mod.rs
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@ -0,0 +1,47 @@
pub const CLOCK_FREQ: usize = 12500000;
pub const MMIO: &[(usize, usize)] = &[
(0x1000_0000, 0x1000),
(0x1000_1000, 0x1000),
(0xC00_0000, 0x40_0000),
];
pub type BlockDeviceImpl = crate::drivers::block::VirtIOBlock;
pub type CharDeviceImpl = crate::drivers::chardev::NS16550a<VIRT_UART>;
pub const VIRT_PLIC: usize = 0xC00_0000;
pub const VIRT_UART: usize = 0x1000_0000;
use crate::drivers::block::BLOCK_DEVICE;
use crate::drivers::chardev::{CharDevice, UART};
use crate::drivers::plic::{IntrTargetPriority, PLIC};
pub fn device_init() {
use riscv::register::sie;
kprintln!("[KERN] board::qemu::device_init() begin");
let mut plic = unsafe { PLIC::new(VIRT_PLIC) };
let hart_id: usize = 0;
let supervisor = IntrTargetPriority::Supervisor;
let machine = IntrTargetPriority::Machine;
plic.set_threshold(hart_id, supervisor, 0);
plic.set_threshold(hart_id, machine, 1);
for intr_src_id in [1usize, 10] {
plic.enable(hart_id, supervisor, intr_src_id);
plic.set_priority(intr_src_id, 1);
}
unsafe {
sie::set_sext();
}
kprintln!("[KERN] board::qemu::device_init() end");
}
pub fn irq_handler() {
let mut plic = unsafe { PLIC::new(VIRT_PLIC) };
let intr_src_id = plic.claim(0, IntrTargetPriority::Supervisor);
match intr_src_id {
1 => BLOCK_DEVICE.handle_irq(),
10 => UART.handle_irq(),
_ => panic!("unsupported IRQ {}", intr_src_id),
}
plic.complete(0, IntrTargetPriority::Supervisor, intr_src_id);
}

2
os/src/boards/qemu.rs → os/src/board/qemu.rs
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@ -18,6 +18,7 @@ use crate::drivers::plic::{IntrTargetPriority, PLIC};
pub fn device_init() {
use riscv::register::sie;
kprintln!("[KERN] board::qemu::device_init() begin");
let mut plic = unsafe { PLIC::new(VIRT_PLIC) };
let hart_id: usize = 0;
let supervisor = IntrTargetPriority::Supervisor;
@ -31,6 +32,7 @@ pub fn device_init() {
unsafe {
sie::set_sext();
}
kprintln!("[KERN] board::qemu::device_init() end");
}
pub fn irq_handler() {

30
os/src/console.rs
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@ -29,3 +29,33 @@ macro_rules! println {
$crate::console::print(format_args!(concat!($fmt, "\n") $(, $($arg)+)?))
}
}
use crate::sbi::console_putchar;
struct Kstdout;
impl Write for Kstdout {
fn write_str(&mut self, s: &str) -> fmt::Result {
for c in s.chars() {
console_putchar(c as usize);
}
Ok(())
}
}
pub fn kprint(args: fmt::Arguments) {
Kstdout.write_fmt(args).unwrap();
}
#[macro_export]
macro_rules! kprint {
($fmt: literal $(, $($arg: tt)+)?) => {
$crate::console::kprint(format_args!($fmt $(, $($arg)+)?));
}
}
#[macro_export]
macro_rules! kprintln {
($fmt: literal $(, $($arg: tt)+)?) => {
$crate::console::kprint(format_args!(concat!($fmt, "\n") $(, $($arg)+)?));
}
}

4
os/src/drivers/block/mod.rs
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@ -1,7 +1,7 @@
mod sdcard;
// mod sdcard;
mod virtio_blk;
pub use sdcard::SDCardWrapper;
// pub use sdcard::SDCardWrapper;
pub use virtio_blk::VirtIOBlock;
use crate::board::BlockDeviceImpl;

9
os/src/fs/inode.rs
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@ -51,11 +51,11 @@ lazy_static! {
}
pub fn list_apps() {
println!("/**** APPS ****");
kprintln!("[KERN] fs::inode::list_apps()) begin");
for app in ROOT_INODE.ls() {
println!("{}", app);
}
println!("**************/")
kprintln!("[KERN] fs::inode::list_apps()) end");
}
bitflags! {
@ -83,6 +83,7 @@ impl OpenFlags {
}
pub fn open_file(name: &str, flags: OpenFlags) -> Option<Arc<OSInode>> {
kprintln!("[KERN] fs::inode::open_file() begin");
let (readable, writable) = flags.read_write();
if flags.contains(OpenFlags::CREATE) {
if let Some(inode) = ROOT_INODE.find(name) {
@ -113,6 +114,7 @@ impl File for OSInode {
self.writable
}
fn read(&self, mut buf: UserBuffer) -> usize {
kprintln!("[KERN] fs::inode::read() begin");
let mut inner = self.inner.exclusive_access();
let mut total_read_size = 0usize;
for slice in buf.buffers.iter_mut() {
@ -123,9 +125,11 @@ impl File for OSInode {
inner.offset += read_size;
total_read_size += read_size;
}
kprintln!("[KERN] fs::inode::read() end");
total_read_size
}
fn write(&self, buf: UserBuffer) -> usize {
kprintln!("[KERN] fs::inode::write() begin");
let mut inner = self.inner.exclusive_access();
let mut total_write_size = 0usize;
for slice in buf.buffers.iter() {
@ -134,6 +138,7 @@ impl File for OSInode {
inner.offset += write_size;
total_write_size += write_size;
}
kprintln!("[KERN] fs::inode::write() end");
total_write_size
}
}

19
os/src/main.rs
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@ -8,12 +8,12 @@ extern crate alloc;
#[macro_use]
extern crate bitflags;
#[cfg(feature = "board_k210")]
#[path = "boards/k210.rs"]
mod board;
#[cfg(not(any(feature = "board_k210")))]
#[path = "boards/qemu.rs"]
mod board;
// #[cfg(feature = "board_k210")]
// #[path = "boards/k210.rs"]
// mod board;
// #[cfg(not(any(feature = "board_k210")))]
// #[path = "boards/qemu.rs"]
#[macro_use]
mod console;
@ -28,6 +28,8 @@ mod syscall;
mod task;
mod timer;
mod trap;
mod board;
// use board::*;
core::arch::global_asm!(include_str!("entry.asm"));
@ -36,10 +38,12 @@ fn clear_bss() {
fn sbss();
fn ebss();
}
kprintln!("[KERN] clear_bss() begin");
unsafe {
core::slice::from_raw_parts_mut(sbss as usize as *mut u8, ebss as usize - sbss as usize)
.fill(0);
}
kprintln!("[KERN] clear_bss() end");
}
use lazy_static::*;
@ -51,6 +55,7 @@ lazy_static! {
#[no_mangle]
pub fn rust_main() -> ! {
kprintln!("[KERN] rust_main() begin");
clear_bss();
mm::init();
trap::init();
@ -61,5 +66,5 @@ pub fn rust_main() -> ! {
task::add_initproc();
*DEV_NON_BLOCKING_ACCESS.exclusive_access() = true;
task::run_tasks();
panic!("Unreachable in rust_main!");
panic!("[KERN] Unreachable in rust_main!");
}

6
os/src/mm/frame_allocator.rs
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@ -48,7 +48,7 @@ impl StackFrameAllocator {
pub fn init(&mut self, l: PhysPageNum, r: PhysPageNum) {
self.current = l.0;
self.end = r.0;
println!("last {} Physical Frames.", self.end - self.current);
println!("[KERN] last {} Physical Frames.", self.end - self.current);
}
}
impl FrameAllocator for StackFrameAllocator {
@ -73,7 +73,7 @@ impl FrameAllocator for StackFrameAllocator {
let ppn = ppn.0;
// validity check
if ppn >= self.current || self.recycled.iter().any(|&v| v == ppn) {
panic!("Frame ppn={:#x} has not been allocated!", ppn);
panic!("[KERN] Frame ppn={:#x} has not been allocated!", ppn);
}
// recycle
self.recycled.push(ppn);
@ -91,10 +91,12 @@ pub fn init_frame_allocator() {
extern "C" {
fn ekernel();
}
kprintln!("[KERN] mm::init_frame_allocator() begin");
FRAME_ALLOCATOR.exclusive_access().init(
PhysAddr::from(ekernel as usize).ceil(),
PhysAddr::from(MEMORY_END).floor(),
);
kprintln!("[KERN] mm::init_frame_allocator() end");
}
pub fn frame_alloc() -> Option<FrameTracker> {

4
os/src/mm/heap_allocator.rs
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@ -6,17 +6,19 @@ static HEAP_ALLOCATOR: LockedHeap = LockedHeap::empty();
#[alloc_error_handler]
pub fn handle_alloc_error(layout: core::alloc::Layout) -> ! {
panic!("Heap allocation error, layout = {:?}", layout);
panic!("[KERN] Heap allocation error, layout = {:?}", layout);
}
static mut HEAP_SPACE: [u8; KERNEL_HEAP_SIZE] = [0; KERNEL_HEAP_SIZE];
pub fn init_heap() {
kprintln!("[KERN] mm::init_heap() begin");
unsafe {
HEAP_ALLOCATOR
.lock()
.init(HEAP_SPACE.as_ptr() as usize, KERNEL_HEAP_SIZE);
}
kprintln!("[KERN] mm::init_heap() end");
}
#[allow(unused)]

36
os/src/mm/memory_set.rs
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@ -88,18 +88,19 @@ impl MemorySet {
}
/// Without kernel stacks.
pub fn new_kernel() -> Self {
kprintln!("[KERN] mm::memory_set::MemorySet::new_kernel() begin");
let mut memory_set = Self::new_bare();
// map trampoline
memory_set.map_trampoline();
// map kernel sections
println!(".text [{:#x}, {:#x})", stext as usize, etext as usize);
println!(".rodata [{:#x}, {:#x})", srodata as usize, erodata as usize);
println!(".data [{:#x}, {:#x})", sdata as usize, edata as usize);
println!("[KERN] .text [{:#x}, {:#x})", stext as usize, etext as usize);
println!("[KERN] .rodata [{:#x}, {:#x})", srodata as usize, erodata as usize);
println!("[KERN] .data [{:#x}, {:#x})", sdata as usize, edata as usize);
println!(
".bss [{:#x}, {:#x})",
"[KERN] .bss [{:#x}, {:#x})",
sbss_with_stack as usize, ebss as usize
);
println!("mapping .text section");
println!("[KERN] mapping .text section");
memory_set.push(
MapArea::new(
(stext as usize).into(),
@ -109,7 +110,7 @@ impl MemorySet {
),
None,
);
println!("mapping .rodata section");
println!("[KERN] mapping .rodata section");
memory_set.push(
MapArea::new(
(srodata as usize).into(),
@ -119,7 +120,7 @@ impl MemorySet {
),
None,
);
println!("mapping .data section");
println!("[KERN] mapping .data section");
memory_set.push(
MapArea::new(
(sdata as usize).into(),
@ -129,7 +130,7 @@ impl MemorySet {
),
None,
);
println!("mapping .bss section");
println!("[KERN] mapping .bss section");
memory_set.push(
MapArea::new(
(sbss_with_stack as usize).into(),
@ -139,7 +140,7 @@ impl MemorySet {
),
None,
);
println!("mapping physical memory");
println!("[KERN] mapping physical memory");
memory_set.push(
MapArea::new(
(ekernel as usize).into(),
@ -149,7 +150,7 @@ impl MemorySet {
),
None,
);
println!("mapping memory-mapped registers");
println!("[KERN] mapping memory-mapped registers");
for pair in MMIO {
memory_set.push(
MapArea::new(
@ -161,11 +162,13 @@ impl MemorySet {
None,
);
}
kprintln!("[KERN] mm::memory_set::MemorySet::new_kernel() end");
memory_set
}
/// Include sections in elf and trampoline,
/// also returns user_sp_base and entry point.
pub fn from_elf(elf_data: &[u8]) -> (Self, usize, usize) {
kprintln!("[KERN] mm::memory_set::MemorySet::from_elf() begin");
let mut memory_set = Self::new_bare();
// map trampoline
memory_set.map_trampoline();
@ -203,6 +206,7 @@ impl MemorySet {
let max_end_va: VirtAddr = max_end_vpn.into();
let mut user_stack_base: usize = max_end_va.into();
user_stack_base += PAGE_SIZE;
kprintln!("[KERN] mm::memory_set::MemorySet::from_elf() end");
(
memory_set,
user_stack_base,
@ -210,6 +214,7 @@ impl MemorySet {
)
}
pub fn from_existed_user(user_space: &MemorySet) -> MemorySet {
kprintln!("[KERN] mm::memory_set::MemorySet::from_existed_user() begin");
let mut memory_set = Self::new_bare();
// map trampoline
memory_set.map_trampoline();
@ -226,14 +231,17 @@ impl MemorySet {
.copy_from_slice(src_ppn.get_bytes_array());
}
}
kprintln!("[KERN] mm::memory_set::MemorySet::from_existed_user() end");
memory_set
}
pub fn activate(&self) {
kprintln!("[KERN] mm::memory_set::MemorySet::activate() begin");
let satp = self.page_table.token();
unsafe {
satp::write(satp);
asm!("sfence.vma");
}
kprintln!("[KERN] mm::memory_set::MemorySet::activate() begin");
}
pub fn translate(&self, vpn: VirtPageNum) -> Option<PageTableEntry> {
self.page_table.translate(vpn)
@ -258,8 +266,10 @@ impl MapArea {
map_type: MapType,
map_perm: MapPermission,
) -> Self {
kprintln!("[KERN] mm::memory_set::MapArea::new() begin");
let start_vpn: VirtPageNum = start_va.floor();
let end_vpn: VirtPageNum = end_va.ceil();
kprintln!("[KERN] mm::memory_set::MapArea::new(start_vpn: {:?}, end_vpn: {:?}) end", start_vpn, end_vpn);
Self {
vpn_range: VPNRange::new(start_vpn, end_vpn),
data_frames: BTreeMap::new(),
@ -297,18 +307,23 @@ impl MapArea {
page_table.unmap(vpn);
}
pub fn map(&mut self, page_table: &mut PageTable) {
kprintln!("[KERN] mm::memory_set::MapArea::map() begin");
for vpn in self.vpn_range {
self.map_one(page_table, vpn);
}
kprintln!("[KERN] mm::memory_set::MapArea::map() end");
}
pub fn unmap(&mut self, page_table: &mut PageTable) {
kprintln!("[KERN] mm::memory_set::MapArea::unmap() begin");
for vpn in self.vpn_range {
self.unmap_one(page_table, vpn);
}
kprintln!("[KERN] mm::memory_set::MapArea::unmap() end");
}
/// data: start-aligned but maybe with shorter length
/// assume that all frames were cleared before
pub fn copy_data(&mut self, page_table: &mut PageTable, data: &[u8]) {
kprintln!("[KERN] mm::memory_set::MapArea::copy_data() begin");
assert_eq!(self.map_type, MapType::Framed);
let mut start: usize = 0;
let mut current_vpn = self.vpn_range.get_start();
@ -327,6 +342,7 @@ impl MapArea {
}
current_vpn.step();
}
kprintln!("[KERN] mm::memory_set::MapArea::copy_data() end");
}
}

2
os/src/mm/mod.rs
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@ -16,7 +16,9 @@ pub use page_table::{
};
pub fn init() {
kprintln!("[KERN] mm::init() begin");
heap_allocator::init_heap();
frame_allocator::init_frame_allocator();
KERNEL_SPACE.exclusive_access().activate();
kprintln!("[KERN] mm::init() end");
}

11
os/src/syscall/fs.rs
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@ -4,6 +4,9 @@ use crate::task::{current_process, current_user_token};
use alloc::sync::Arc;
pub fn sys_write(fd: usize, buf: *const u8, len: usize) -> isize {
if fd!=1 && fd!=2 {
kprintln!("[KERN] syscall::fs::sys_write(fd: {}) begin", fd);
}
let token = current_user_token();
let process = current_process();
let inner = process.inner_exclusive_access();
@ -24,6 +27,9 @@ pub fn sys_write(fd: usize, buf: *const u8, len: usize) -> isize {
}
pub fn sys_read(fd: usize, buf: *const u8, len: usize) -> isize {
if fd!=0 {
kprintln!("[KERN] syscall::fs::sys_read(fd: {}) begin", fd);
}
let token = current_user_token();
let process = current_process();
let inner = process.inner_exclusive_access();
@ -44,6 +50,7 @@ pub fn sys_read(fd: usize, buf: *const u8, len: usize) -> isize {
}
pub fn sys_open(path: *const u8, flags: u32) -> isize {
kprintln!("[KERN] syscall::fs::sys_open() begin");
let process = current_process();
let token = current_user_token();
let path = translated_str(token, path);
@ -51,6 +58,7 @@ pub fn sys_open(path: *const u8, flags: u32) -> isize {
let mut inner = process.inner_exclusive_access();
let fd = inner.alloc_fd();
inner.fd_table[fd] = Some(inode);
kprintln!("[KERN] syscall::fs::sys_open() return fd {}, end",fd);
fd as isize
} else {
-1
@ -58,6 +66,7 @@ pub fn sys_open(path: *const u8, flags: u32) -> isize {
}
pub fn sys_close(fd: usize) -> isize {
kprintln!("[KERN] syscall::fs::sys_close(fd: {}) begin",fd);
let process = current_process();
let mut inner = process.inner_exclusive_access();
if fd >= inner.fd_table.len() {
@ -71,6 +80,7 @@ pub fn sys_close(fd: usize) -> isize {
}
pub fn sys_pipe(pipe: *mut usize) -> isize {
kprintln!("[KERN] syscall::fs::sys_pipe() begin");
let process = current_process();
let token = current_user_token();
let mut inner = process.inner_exclusive_access();
@ -85,6 +95,7 @@ pub fn sys_pipe(pipe: *mut usize) -> isize {
}
pub fn sys_dup(fd: usize) -> isize {
kprintln!("[KERN] syscall::fs::sys_dup(fd: {}) begin", fd);
let process = current_process();
let mut inner = process.inner_exclusive_access();
if fd >= inner.fd_table.len() {

39
os/src/syscall/mod.rs
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@ -37,6 +37,12 @@ use sync::*;
use thread::*;
pub fn syscall(syscall_id: usize, args: [usize; 3]) -> isize {
if syscall_id !=SYSCALL_YIELD &&
syscall_id !=SYSCALL_WAITPID &&
!(syscall_id ==SYSCALL_READ && args[0] == 0) &&
!(syscall_id ==SYSCALL_WRITE && (args[0] == 1|| args[0] == 2)) {
kprintln!("[KERN] syscall::syscall(id: {}) begin", sys_id_str(syscall_id));
}
match syscall_id {
SYSCALL_DUP => sys_dup(args[0]),
SYSCALL_OPEN => sys_open(args[0] as *const u8, args[1] as u32),
@ -68,3 +74,36 @@ pub fn syscall(syscall_id: usize, args: [usize; 3]) -> isize {
_ => panic!("Unsupported syscall_id: {}", syscall_id),
}
}
pub fn sys_id_str(syscall_id: usize) -> &'static str {
match syscall_id {
SYSCALL_DUP => "sys_dup",
SYSCALL_OPEN => "sys_open",
SYSCALL_CLOSE => "sys_close",
SYSCALL_PIPE => "sys_pipe",
SYSCALL_READ => "sys_read",
SYSCALL_WRITE => "sys_write",
SYSCALL_EXIT => "sys_exit",
SYSCALL_SLEEP => "sys_sleep",
SYSCALL_YIELD => "sys_yield",
SYSCALL_KILL => "sys_kill",
SYSCALL_GET_TIME => "sys_get_time",
SYSCALL_GETPID => "sys_getpid",
SYSCALL_FORK => "sys_fork",
SYSCALL_EXEC => "sys_exec",
SYSCALL_WAITPID => "sys_waitpid",
SYSCALL_THREAD_CREATE => "sys_thread_create",
SYSCALL_GETTID => "sys_gettid",
SYSCALL_WAITTID => "sys_waittid",
SYSCALL_MUTEX_CREATE => "sys_mutex_create",
SYSCALL_MUTEX_LOCK => "sys_mutex_lock",
SYSCALL_MUTEX_UNLOCK => "sys_mutex_unlock",
SYSCALL_SEMAPHORE_CREATE => "sys_semaphore_create",
SYSCALL_SEMAPHORE_UP => "sys_semaphore_up",
SYSCALL_SEMAPHORE_DOWN => "sys_semaphore_down",
SYSCALL_CONDVAR_CREATE => "sys_condvar_create",
SYSCALL_CONDVAR_SIGNAL => "sys_condvar_signal",
SYSCALL_CONDVAR_WAIT => "sys_condvar_wait",
_ => "Unsupported syscall_id",
}
}

9
os/src/syscall/process.rs
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@ -10,6 +10,7 @@ use alloc::sync::Arc;
use alloc::vec::Vec;
pub fn sys_exit(exit_code: i32) -> ! {
kprintln!("[KERN] syscall::process::sys_exit begin");
exit_current_and_run_next(exit_code);
panic!("Unreachable in sys_exit!");
}
@ -20,14 +21,17 @@ pub fn sys_yield() -> isize {
}
pub fn sys_get_time() -> isize {
kprintln!("[KERN] syscall::process::sys_get_time begin");
get_time_ms() as isize
}
pub fn sys_getpid() -> isize {
kprintln!("[KERN] syscall::process::sys_getpid begin");
current_task().unwrap().process.upgrade().unwrap().getpid() as isize
}
pub fn sys_fork() -> isize {
kprintln!("[KERN] syscall::process::sys_fork begin");
let current_process = current_process();
let new_process = current_process.fork();
let new_pid = new_process.getpid();
@ -38,10 +42,12 @@ pub fn sys_fork() -> isize {
// we do not have to move to next instruction since we have done it before
// for child process, fork returns 0
trap_cx.x[10] = 0;
kprintln!("[KERN] syscall::process::sys_fork end");
new_pid as isize
}
pub fn sys_exec(path: *const u8, mut args: *const usize) -> isize {
kprintln!("[KERN] syscall::process::sys_exec begin");
let token = current_user_token();
let path = translated_str(token, path);
let mut args_vec: Vec<String> = Vec::new();
@ -60,6 +66,7 @@ pub fn sys_exec(path: *const u8, mut args: *const usize) -> isize {
let process = current_process();
let argc = args_vec.len();
process.exec(all_data.as_slice(), args_vec);
kprintln!("[KERN] syscall::process::sys_exec end");
// return argc because cx.x[10] will be covered with it later
argc as isize
} else {
@ -70,6 +77,7 @@ pub fn sys_exec(path: *const u8, mut args: *const usize) -> isize {
/// If there is not a child process whose pid is same as given, return -1.
/// Else if there is a child process but it is still running, return -2.
pub fn sys_waitpid(pid: isize, exit_code_ptr: *mut i32) -> isize {
//kprintln!("[KERN] syscall::process::sys_waitpid begin");
let process = current_process();
// find a child process
@ -104,6 +112,7 @@ pub fn sys_waitpid(pid: isize, exit_code_ptr: *mut i32) -> isize {
}
pub fn sys_kill(pid: usize, signal: u32) -> isize {
kprintln!("[KERN] syscall::process::sys_kill begin");
if let Some(process) = pid2process(pid) {
if let Some(flag) = SignalFlags::from_bits(signal) {
process.inner_exclusive_access().signals |= flag;

11
os/src/syscall/sync.rs
Unescape View File

@ -4,14 +4,17 @@ use crate::timer::{add_timer, get_time_ms};
use alloc::sync::Arc;
pub fn sys_sleep(ms: usize) -> isize {
kprintln!("[KERN] syscall::sync::sys_sleep begin");
let expire_ms = get_time_ms() + ms;
let task = current_task().unwrap();
add_timer(expire_ms, task);
block_current_and_run_next();
kprintln!("[KERN] syscall::sync::sys_sleep end");
0
}
pub fn sys_mutex_create(blocking: bool) -> isize {
kprintln!("[KERN] syscall::sync::sys_mutex_create begin");
let process = current_process();
let mutex: Option<Arc<dyn Mutex>> = if !blocking {
Some(Arc::new(MutexSpin::new()))
@ -35,6 +38,7 @@ pub fn sys_mutex_create(blocking: bool) -> isize {
}
pub fn sys_mutex_lock(mutex_id: usize) -> isize {
kprintln!("[KERN] syscall::sync::sys_mutex_lock begin");
let process = current_process();
let process_inner = process.inner_exclusive_access();
let mutex = Arc::clone(process_inner.mutex_list[mutex_id].as_ref().unwrap());
@ -45,6 +49,7 @@ pub fn sys_mutex_lock(mutex_id: usize) -> isize {
}
pub fn sys_mutex_unlock(mutex_id: usize) -> isize {
kprintln!("[KERN] syscall::sync::sys_mutex_unlock begin");
let process = current_process();
let process_inner = process.inner_exclusive_access();
let mutex = Arc::clone(process_inner.mutex_list[mutex_id].as_ref().unwrap());
@ -55,6 +60,7 @@ pub fn sys_mutex_unlock(mutex_id: usize) -> isize {
}
pub fn sys_semaphore_create(res_count: usize) -> isize {
kprintln!("[KERN] syscall::sync::sys_semaphore_create begin");
let process = current_process();
let mut process_inner = process.inner_exclusive_access();
let id = if let Some(id) = process_inner
@ -76,6 +82,7 @@ pub fn sys_semaphore_create(res_count: usize) -> isize {
}
pub fn sys_semaphore_up(sem_id: usize) -> isize {
kprintln!("[KERN] syscall::sync::sys_semaphore_up begin");
let process = current_process();
let process_inner = process.inner_exclusive_access();
let sem = Arc::clone(process_inner.semaphore_list[sem_id].as_ref().unwrap());
@ -85,6 +92,7 @@ pub fn sys_semaphore_up(sem_id: usize) -> isize {
}
pub fn sys_semaphore_down(sem_id: usize) -> isize {
kprintln!("[KERN] syscall::sync::sys_semaphore_down begin");
let process = current_process();
let process_inner = process.inner_exclusive_access();
let sem = Arc::clone(process_inner.semaphore_list[sem_id].as_ref().unwrap());
@ -94,6 +102,7 @@ pub fn sys_semaphore_down(sem_id: usize) -> isize {
}
pub fn sys_condvar_create(_arg: usize) -> isize {
kprintln!("[KERN] syscall::sync::sys_condvar_create begin");
let process = current_process();
let mut process_inner = process.inner_exclusive_access();
let id = if let Some(id) = process_inner
@ -115,6 +124,7 @@ pub fn sys_condvar_create(_arg: usize) -> isize {
}
pub fn sys_condvar_signal(condvar_id: usize) -> isize {
kprintln!("[KERN] syscall::sync::sys_condvar_signal begin");
let process = current_process();
let process_inner = process.inner_exclusive_access();
let condvar = Arc::clone(process_inner.condvar_list[condvar_id].as_ref().unwrap());
@ -124,6 +134,7 @@ pub fn sys_condvar_signal(condvar_id: usize) -> isize {
}
pub fn sys_condvar_wait(condvar_id: usize, mutex_id: usize) -> isize {
kprintln!("[KERN] syscall::sync::sys_condvar_wait begin");
let process = current_process();
let process_inner = process.inner_exclusive_access();
let condvar = Arc::clone(process_inner.condvar_list[condvar_id].as_ref().unwrap());

4
os/src/syscall/thread.rs
Unescape View File

@ -6,6 +6,7 @@ use crate::{
use alloc::sync::Arc;
pub fn sys_thread_create(entry: usize, arg: usize) -> isize {
kprintln!("[KERN] syscall::thread::sys_thread_create begin");
let task = current_task().unwrap();
let process = task.process.upgrade().unwrap();
// create a new thread
@ -39,10 +40,12 @@ pub fn sys_thread_create(entry: usize, arg: usize) -> isize {
trap_handler as usize,
);
(*new_task_trap_cx).x[10] = arg;
kprintln!("[KERN] syscall::thread::sys_thread_create end");
new_task_tid as isize
}
pub fn sys_gettid() -> isize {
kprintln!("[KERN] syscall::thread::sys_gettid begin");
current_task()
.unwrap()
.inner_exclusive_access()
@ -56,6 +59,7 @@ pub fn sys_gettid() -> isize {
/// thread has not exited yet, return -2
/// otherwise, return thread's exit code
pub fn sys_waittid(tid: usize) -> i32 {
kprintln!("[KERN] syscall::thread::sys_waittid begin");
let task = current_task().unwrap();
let process = task.process.upgrade().unwrap();
let task_inner = task.inner_exclusive_access();

3
os/src/task/manager.rs
Unescape View File

@ -31,10 +31,13 @@ lazy_static! {
}
pub fn add_task(task: Arc<TaskControlBlock>) {
//kprintln!("[KERN] task::manager::add_task() begin");
TASK_MANAGER.exclusive_access().add(task);
//kprintln!("[KERN] task::manager::add_task() end");
}
pub fn fetch_task() -> Option<Arc<TaskControlBlock>> {
//kprintln!("[KERN] task::manager::fetch_task() begin");
TASK_MANAGER.exclusive_access().fetch()
}

9
os/src/task/mod.rs
Unescape View File

@ -27,6 +27,7 @@ pub use task::{TaskControlBlock, TaskStatus};
pub fn suspend_current_and_run_next() {
// There must be an application running.
//kprintln!("[KERN] task::suspend_current_and_run_next() begin");
let task = take_current_task().unwrap();
// ---- access current TCB exclusively
@ -40,14 +41,17 @@ pub fn suspend_current_and_run_next() {
// push back to ready queue.
add_task(task);
// jump to scheduling cycle
//kprintln!("[KERN] task::suspend_current_and_run_next() end");
schedule(task_cx_ptr);
}
/// This function must be followed by a schedule
pub fn block_current_task() -> *mut TaskContext {
//kprintln!("[KERN] task::block_current_task() begin");
let task = take_current_task().unwrap();
let mut task_inner = task.inner_exclusive_access();
task_inner.task_status = TaskStatus::Blocking;
//kprintln!("[KERN] task::block_current_task() end");
&mut task_inner.task_cx as *mut TaskContext
}
@ -57,6 +61,7 @@ pub fn block_current_and_run_next() {
}
pub fn exit_current_and_run_next(exit_code: i32) {
kprintln!("[KERN] task::exit_current_and_run_next() begin");
let task = take_current_task().unwrap();
let mut task_inner = task.inner_exclusive_access();
let process = task.process.upgrade().unwrap();
@ -105,11 +110,13 @@ pub fn exit_current_and_run_next(exit_code: i32) {
drop(process);
// we do not have to save task context
let mut _unused = TaskContext::zero_init();
kprintln!("[KERN] task::exit_current_and_run_next() end");
schedule(&mut _unused as *mut _);
}
lazy_static! {
pub static ref INITPROC: Arc<ProcessControlBlock> = {
kprintln!("[KERN] task::lazy_static!INITPROC begin");
let inode = open_file("initproc", OpenFlags::RDONLY).unwrap();
let v = inode.read_all();
ProcessControlBlock::new(v.as_slice())
@ -117,7 +124,9 @@ lazy_static! {
}
pub fn add_initproc() {
kprintln!("[KERN] task::add_initproc() begin");
let _initproc = INITPROC.clone();
kprintln!("[KERN] task::add_initproc() end");
}
pub fn check_signals_of_current() -> Option<(i32, &'static str)> {

6
os/src/task/process.rs
Unescape View File

@ -73,6 +73,7 @@ impl ProcessControlBlock {
pub fn new(elf_data: &[u8]) -> Arc<Self> {
// memory_set with elf program headers/trampoline/trap context/user stack
kprintln!("[KERN] task::process::new() begin");
let (memory_set, ustack_base, entry_point) = MemorySet::from_elf(elf_data);
// allocate a pid
let pid_handle = pid_alloc();
@ -128,6 +129,7 @@ impl ProcessControlBlock {
insert_into_pid2process(process.getpid(), Arc::clone(&process));
// add main thread to scheduler
add_task(task);
kprintln!("[KERN] task::process::new() end");
process
}
@ -135,6 +137,7 @@ impl ProcessControlBlock {
pub fn exec(self: &Arc<Self>, elf_data: &[u8], args: Vec<String>) {
assert_eq!(self.inner_exclusive_access().thread_count(), 1);
// memory_set with elf program headers/trampoline/trap context/user stack
kprintln!("[KERN] task::process::exec() begin");
let (memory_set, ustack_base, entry_point) = MemorySet::from_elf(elf_data);
let new_token = memory_set.token();
// substitute memory_set
@ -182,10 +185,12 @@ impl ProcessControlBlock {
trap_cx.x[10] = args.len();
trap_cx.x[11] = argv_base;
*task_inner.get_trap_cx() = trap_cx;
kprintln!("[KERN] task::process::exec() end");
}
/// Only support processes with a single thread.
pub fn fork(self: &Arc<Self>) -> Arc<Self> {
kprintln!("[KERN] task::process::fork() begin");
let mut parent = self.inner_exclusive_access();
assert_eq!(parent.thread_count(), 1);
// clone parent's memory_set completely including trampoline/ustacks/trap_cxs
@ -249,6 +254,7 @@ impl ProcessControlBlock {
insert_into_pid2process(child.getpid(), Arc::clone(&child));
// add this thread to scheduler
add_task(task);
kprintln!("[KERN] task::process::fork() end");
child
}

1
os/src/task/processor.rs
Unescape View File

@ -34,6 +34,7 @@ lazy_static! {
}
pub fn run_tasks() {
kprintln!("[KERN] task::processor::run_tasks() begin");
loop {
let mut processor = PROCESSOR.exclusive_access();
if let Some(task) = fetch_task() {

2
os/src/task/task.rs
Unescape View File

@ -49,10 +49,12 @@ impl TaskControlBlock {
ustack_base: usize,
alloc_user_res: bool,
) -> Self {
kprintln!("[KERN] TaskControlBlock::new() begin");
let res = TaskUserRes::new(Arc::clone(&process), ustack_base, alloc_user_res);
let trap_cx_ppn = res.trap_cx_ppn();
let kstack = kstack_alloc();
let kstack_top = kstack.get_top();
kprintln!("[KERN] TaskControlBlock::new() end");
Self {
process: Arc::downgrade(&process),
kstack,

2
os/src/timer.rs
Unescape View File

@ -21,7 +21,9 @@ pub fn get_time_ms() -> usize {
}
pub fn set_next_trigger() {
//kprintln!("[KERN] timer::set_next_trigger() begin");
set_timer(get_time() + CLOCK_FREQ / TICKS_PER_SEC);
//kprintln!("[KERN] timer::set_next_trigger() end");
}
pub struct TimerCondVar {

2
os/src/trap/context.rs
Unescape View File

@ -22,6 +22,7 @@ impl TrapContext {
kernel_sp: usize,
trap_handler: usize,
) -> Self {
kprintln!("[KERN] trap::context::TrapContext::app_init_context begin");
let mut sstatus = sstatus::read();
// set CPU privilege to User after trapping back
sstatus.set_spp(SPP::User);
@ -34,6 +35,7 @@ impl TrapContext {
trap_handler,
};
cx.set_sp(sp);
kprintln!("[KERN] trap::context::TrapContext::app_init_context end");
cx
}
}

4
os/src/trap/mod.rs
Unescape View File

@ -17,7 +17,9 @@ use riscv::register::{
global_asm!(include_str!("trap.S"));
pub fn init() {
kprintln!("[KERN] trap::init() begin");
set_kernel_trap_entry();
kprintln!("[KERN] trap::init() end");
}
fn set_kernel_trap_entry() {
@ -39,9 +41,11 @@ fn set_user_trap_entry() {
}
pub fn enable_timer_interrupt() {
kprintln!("[KERN] trap::enable_timer_interrupt() begin");
unsafe {
sie::set_stimer();
}
kprintln!("[KERN] trap::enable_timer_interrupt() end");
}
fn enable_supervisor_interrupt() {

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