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// SPDX-License-Identifier: Apache-2.0 OR MIT
macro_rules! atomic64 {
($atomic_type:ident, $int_type:ident, $atomic_max:ident, $atomic_min:ident) => {
#[repr(C, align(8))]
pub(crate) struct $atomic_type {
v: core::cell::UnsafeCell<$int_type>,
}
// Send is implicitly implemented.
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock.
unsafe impl Sync for $atomic_type {}
impl_default_no_fetch_ops!($atomic_type, $int_type);
impl_default_bit_opts!($atomic_type, $int_type);
impl $atomic_type {
#[inline]
pub(crate) const fn new(v: $int_type) -> Self {
Self { v: core::cell::UnsafeCell::new(v) }
}
#[inline]
pub(crate) fn is_lock_free() -> bool {
is_lock_free()
}
pub(crate) const IS_ALWAYS_LOCK_FREE: bool = IS_ALWAYS_LOCK_FREE;
#[inline]
#[cfg_attr(all(debug_assertions, not(portable_atomic_no_track_caller)), track_caller)]
pub(crate) fn load(&self, order: Ordering) -> $int_type {
crate::utils::assert_load_ordering(order);
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
atomic_load(self.v.get().cast::<u64>(), order) as $int_type
}
}
#[inline]
#[cfg_attr(all(debug_assertions, not(portable_atomic_no_track_caller)), track_caller)]
pub(crate) fn store(&self, val: $int_type, order: Ordering) {
crate::utils::assert_store_ordering(order);
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
atomic_store(self.v.get().cast::<u64>(), val as u64, order)
}
}
#[inline]
pub(crate) fn swap(&self, val: $int_type, order: Ordering) -> $int_type {
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
atomic_swap(self.v.get().cast::<u64>(), val as u64, order) as $int_type
}
}
#[inline]
#[cfg_attr(all(debug_assertions, not(portable_atomic_no_track_caller)), track_caller)]
pub(crate) fn compare_exchange(
&self,
current: $int_type,
new: $int_type,
success: Ordering,
failure: Ordering,
) -> Result<$int_type, $int_type> {
crate::utils::assert_compare_exchange_ordering(success, failure);
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
match atomic_compare_exchange(
self.v.get().cast::<u64>(),
current as u64,
new as u64,
success,
failure,
) {
Ok(v) => Ok(v as $int_type),
Err(v) => Err(v as $int_type),
}
}
}
#[inline]
#[cfg_attr(all(debug_assertions, not(portable_atomic_no_track_caller)), track_caller)]
pub(crate) fn compare_exchange_weak(
&self,
current: $int_type,
new: $int_type,
success: Ordering,
failure: Ordering,
) -> Result<$int_type, $int_type> {
crate::utils::assert_compare_exchange_ordering(success, failure);
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
match atomic_compare_exchange_weak(
self.v.get().cast::<u64>(),
current as u64,
new as u64,
success,
failure,
) {
Ok(v) => Ok(v as $int_type),
Err(v) => Err(v as $int_type),
}
}
}
#[inline]
pub(crate) fn fetch_add(&self, val: $int_type, order: Ordering) -> $int_type {
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
atomic_add(self.v.get().cast::<u64>(), val as u64, order) as $int_type
}
}
#[inline]
pub(crate) fn fetch_sub(&self, val: $int_type, order: Ordering) -> $int_type {
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
atomic_sub(self.v.get().cast::<u64>(), val as u64, order) as $int_type
}
}
#[inline]
pub(crate) fn fetch_and(&self, val: $int_type, order: Ordering) -> $int_type {
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
atomic_and(self.v.get().cast::<u64>(), val as u64, order) as $int_type
}
}
#[inline]
pub(crate) fn fetch_nand(&self, val: $int_type, order: Ordering) -> $int_type {
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
atomic_nand(self.v.get().cast::<u64>(), val as u64, order) as $int_type
}
}
#[inline]
pub(crate) fn fetch_or(&self, val: $int_type, order: Ordering) -> $int_type {
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
atomic_or(self.v.get().cast::<u64>(), val as u64, order) as $int_type
}
}
#[inline]
pub(crate) fn fetch_xor(&self, val: $int_type, order: Ordering) -> $int_type {
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
atomic_xor(self.v.get().cast::<u64>(), val as u64, order) as $int_type
}
}
#[inline]
pub(crate) fn fetch_max(&self, val: $int_type, order: Ordering) -> $int_type {
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
$atomic_max(self.v.get().cast::<u64>(), val as u64, order) as $int_type
}
}
#[inline]
pub(crate) fn fetch_min(&self, val: $int_type, order: Ordering) -> $int_type {
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
$atomic_min(self.v.get().cast::<u64>(), val as u64, order) as $int_type
}
}
#[inline]
pub(crate) fn fetch_not(&self, order: Ordering) -> $int_type {
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
atomic_not(self.v.get().cast::<u64>(), order) as $int_type
}
}
#[inline]
pub(crate) fn not(&self, order: Ordering) {
self.fetch_not(order);
}
#[inline]
pub(crate) fn fetch_neg(&self, order: Ordering) -> $int_type {
#[allow(clippy::cast_possible_wrap, clippy::cast_sign_loss)]
// SAFETY: any data races are prevented by atomic intrinsics, the kernel user helper, or the lock
// and the raw pointer passed in is valid because we got it from a reference.
unsafe {
atomic_neg(self.v.get().cast::<u64>(), order) as $int_type
}
}
#[inline]
pub(crate) fn neg(&self, order: Ordering) {
self.fetch_neg(order);
}
#[inline]
pub(crate) const fn as_ptr(&self) -> *mut $int_type {
self.v.get()
}
}
};
}