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-rw-r--r--tvix/tools/turbofetch/src/buffer.rs83
1 files changed, 0 insertions, 83 deletions
diff --git a/tvix/tools/turbofetch/src/buffer.rs b/tvix/tools/turbofetch/src/buffer.rs
deleted file mode 100644
index d6ff93e3cfe7..000000000000
--- a/tvix/tools/turbofetch/src/buffer.rs
+++ /dev/null
@@ -1,83 +0,0 @@
-use magic_buffer::MagicBuffer;
-use std::cell::Cell;
-
-/// Buffer is a FIFO queue for bytes, built on a ring buffer.
-/// It always provides contiguous slices for both the readable and writable parts,
-/// using an underlying buffer that is "mirrored" in virtual memory.
-pub struct Buffer {
-    buffer: MagicBuffer,
-    /// first readable byte
-    head: Cell<usize>,
-    /// first writable byte
-    tail: usize,
-}
-
-impl Buffer {
-    /// Allocate a fresh buffer, with the specified capacity.
-    /// The buffer can contain at most `capacity - 1` bytes.
-    /// The capacity must be a power of two, and at least [Buffer::min_len].
-    pub fn new(capacity: usize) -> Buffer {
-        Buffer {
-            // MagicBuffer::new verifies that `capacity` is a power of two,
-            // and at least MagicBuffer::min_len().
-            buffer: MagicBuffer::new(capacity).unwrap(),
-            // `head == tail` means the buffer is empty.
-            // In order to ensure that this remains unambiguous,
-            // the buffer can only be filled with capacity-1 bytes.
-            head: Cell::new(0),
-            tail: 0,
-        }
-    }
-
-    /// Returns the minimum buffer capacity.
-    /// This depends on the operating system and architecture.
-    pub fn min_capacity() -> usize {
-        MagicBuffer::min_len()
-    }
-
-    /// Return the capacity of the buffer.
-    /// This is equal to `self.data().len() + self.space().len() + 1`.
-    pub fn capacity(&self) -> usize {
-        self.buffer.len()
-    }
-
-    /// Return the valid, readable data in the buffer.
-    pub fn data(&self) -> &[u8] {
-        let len = self.buffer.len();
-        let head = self.head.get();
-
-        if head <= self.tail {
-            &self.buffer[head..self.tail]
-        } else {
-            &self.buffer[head..self.tail + len]
-        }
-    }
-
-    /// Mark `read_len` bytes of the readable data as consumed, freeing the space.
-    pub fn consume(&self, read_len: usize) {
-        debug_assert!(read_len <= self.data().len());
-        let mut head = self.head.get();
-        head += read_len;
-        head &= self.buffer.len() - 1;
-        self.head.set(head);
-    }
-
-    /// Return the empty, writable space in the buffer.
-    pub fn space(&mut self) -> &mut [u8] {
-        let len = self.buffer.len();
-        let head = self.head.get();
-
-        if head <= self.tail {
-            &mut self.buffer[self.tail..head + len - 1]
-        } else {
-            &mut self.buffer[self.tail..head - 1]
-        }
-    }
-
-    /// Mark `written_len` bytes of the writable space as valid, readable data.
-    pub fn commit(&mut self, written_len: usize) {
-        debug_assert!(written_len <= self.space().len());
-        self.tail += written_len;
-        self.tail &= self.buffer.len() - 1;
-    }
-}