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fix scause 15 bug

This commit is contained in:
SKTT1Ryze 2021-05-24 12:22:16 +08:00
parent 491f328f6e
commit d9eacc6062
2 changed files with 3 additions and 3 deletions
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4
shared-scheduler/src/algorithm/ring_fifo.rs
View File

@ -90,7 +90,7 @@ impl<T, const N: usize> RingQueue<T, N> {
}
unsafe { *self.elem[self.tail].as_mut_ptr() = value };
self.tail = self.tail.wrapping_add(1);
if self.tail > N || self.tail == 0 {
if self.tail >= N || self.tail == 0 {
self.tail = self.tail.wrapping_sub(N);
}
None // success
@ -101,7 +101,7 @@ impl<T, const N: usize> RingQueue<T, N> {
}
let value = unsafe { ptr::read(self.elem[self.front].as_ptr()) };
self.front = self.front.wrapping_add(1); // assured non empty
if self.front > N || self.front == 0 {
if self.front >= N || self.front == 0 {
self.front = self.front.wrapping_sub(N);
}
Some(value)

2
tornado-kernel/src/virtio/mod.rs
View File

@ -77,7 +77,7 @@ pub extern "C" fn virtio_virt_to_phys(vaddr: VirtualAddress) -> PhysicalAddress
pub async fn async_virtio_blk_test() {
let mut read_buf = [0u8; 512];
let mut write_buf = [0u8; 512];
for i in 0..50 {
for i in 0..512 {
write_buf.iter_mut().for_each(|byte| *byte = i as u8);
BLOCK_DEVICE.write_block(i as usize, &write_buf).await;
BLOCK_DEVICE.read_block(i as usize, &mut read_buf).await;