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wrap Payloads that are dropped eraly in ManuallyDrop

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This commit is contained in:
Bennet Bleßmann
2024-07-07 15:21:08 +02:00
parent a0d790445d
commit 1b19ae81d5
4 changed files with 62 additions and 41 deletions
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45
src/machine/streams.rs
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@@ -454,13 +454,25 @@ impl<T> DerefMut for StreamLayout<T> {
macro_rules! arena_allocated_impl_for_stream {
($stream_type:ty, $stream_tag:ident) => {
impl $crate::arena::AllocateInArena<$stream_tag> for StreamLayout<$stream_type> {
fn arena_allocate(self, arena: &mut Arena) -> TypedArenaPtr<$stream_tag> {
$stream_tag::alloc(arena, core::mem::ManuallyDrop::new(self))
}
}
impl ArenaAllocated for $stream_tag {
type Payload = StreamLayout<$stream_type>;
type Payload = core::mem::ManuallyDrop<StreamLayout<$stream_type>>;
#[inline]
fn tag() -> ArenaHeaderTag {
ArenaHeaderTag::$stream_tag
}
unsafe fn dealloc(ptr: std::ptr::NonNull<TypedAllocSlab<Self>>) {
let mut slab = unsafe { Box::from_raw(ptr.as_ptr()) };
unsafe { std::mem::ManuallyDrop::drop(slab.payload()) };
drop(slab);
}
}
};
}
@@ -994,7 +1006,7 @@ impl Stream {
past_end_of_stream,
stream,
..
} = &mut **stream_layout;
} = &mut ***stream_layout;
stream
.get_mut()
@@ -1068,7 +1080,7 @@ impl Stream {
past_end_of_stream,
stream,
..
} = &mut **stream_layout;
} = &mut ***stream_layout;
let cursor_len = stream.get_ref().0.get_ref().len() as u64;
cursor_position(past_end_of_stream, &stream.get_ref().0, cursor_len)
@@ -1078,7 +1090,7 @@ impl Stream {
past_end_of_stream,
stream,
..
} = &mut **stream_layout;
} = &mut ***stream_layout;
let cursor_len = stream.stream.get_ref().len() as u64;
cursor_position(past_end_of_stream, &stream.stream, cursor_len)
@@ -1090,7 +1102,7 @@ impl Stream {
past_end_of_stream,
stream,
..
} = &mut **stream_layout;
} = &mut ***stream_layout;
match stream.get_ref().file.metadata() {
Ok(metadata) => {
@@ -1270,38 +1282,25 @@ impl Stream {
Stream::NamedTls(ref mut tls_stream) => tls_stream.inner_mut().tls_stream.shutdown(),
#[cfg(feature = "http")]
Stream::HttpRead(ref mut http_stream) => {
unsafe {
http_stream.set_tag(ArenaHeaderTag::Dropped);
std::ptr::drop_in_place(&mut http_stream.inner_mut().body_reader as *mut _);
}
http_stream.drop_payload();
Ok(())
}
#[cfg(feature = "http")]
Stream::HttpWrite(ref mut http_stream) => {
http_stream.inner_mut().drop();
unsafe {
http_stream.set_tag(ArenaHeaderTag::Dropped);
std::ptr::drop_in_place(&mut http_stream.inner_mut().buffer as *mut _);
}
Stream::HttpWrite(mut http_stream) => {
http_stream.drop_payload();
Ok(())
}
Stream::InputFile(mut file_stream) => {
// close the stream by dropping the inner File.
unsafe {
file_stream.set_tag(ArenaHeaderTag::Dropped);
std::ptr::drop_in_place(&mut file_stream.inner_mut().file as *mut _);
}
file_stream.drop_payload();
Ok(())
}
Stream::OutputFile(mut file_stream) => {
// close the stream by dropping the inner File.
unsafe {
file_stream.set_tag(ArenaHeaderTag::Dropped);
std::ptr::drop_in_place(&mut file_stream.file as *mut _);
}
file_stream.drop_payload();
Ok(())
}