Remove the shim kernel crate

kernel/src/prelude.rs

@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: MPL-2.0
+
+#![allow(unused)]
+
+pub(crate) use alloc::{
+    boxed::Box,
+    collections::{BTreeMap, BTreeSet, LinkedList, VecDeque},
+    ffi::CString,
+    string::{String, ToString},
+    sync::{Arc, Weak},
+    vec,
+    vec::Vec,
+};
+pub(crate) use core::{any::Any, ffi::CStr, fmt::Debug};
+
+pub(crate) use bitflags::bitflags;
+pub(crate) use int_to_c_enum::TryFromInt;
+pub(crate) use log::{debug, error, info, log_enabled, trace, warn};
+pub(crate) use ostd::{
+    mm::{FallibleVmRead, FallibleVmWrite, Vaddr, VmReader, VmWriter, PAGE_SIZE},
+    sync::{Mutex, MutexGuard, RwLock, RwMutex, SpinLock, SpinLockGuard},
+    Pod,
+};
+
+/// return current process
+#[macro_export]
+macro_rules! current {
+    () => {
+        $crate::process::Process::current().unwrap()
+    };
+}
+
+/// Returns the current thread.
+///
+/// # Panics
+///
+/// This macro will panic if the current task is not associated with a thread.
+///
+/// Except for unit tests, all tasks should be associated with threads. To write code that can be
+/// called directly in unit tests, consider using [`Thread::current`] instead.
+///
+/// [`Thread::current`]: crate::thread::Thread::current
+#[macro_export]
+macro_rules! current_thread {
+    () => {
+        $crate::thread::Thread::current().expect("the current task is not associated with a thread")
+    };
+}
+
+pub(crate) use lazy_static::lazy_static;
+
+pub(crate) use crate::{
+    context::{Context, CurrentUserSpace, ReadCString},
+    current, current_thread,
+    error::{Errno, Error},
+    print, println,
+    time::{wait::WaitTimeout, Clock},
+};
+pub(crate) type Result<T> = core::result::Result<T, Error>;
+pub(crate) use crate::{return_errno, return_errno_with_message};