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Fix the bounds check

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This commit is contained in:
Bradlee Speice 2019-10-03 22:40:10 -04:00
parent 4611034b7b
commit 38eea0224f
1 changed files with 18 additions and 1 deletions
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19
src/client/concurrent/atomic_buffer.rs
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@ -26,7 +26,7 @@ impl<'a> AtomicBuffer<'a> {
}
fn bounds_check(&self, offset: IndexT, size: usize) -> Result<()> {
if self.buffer.len() - offset as usize > size {
if self.buffer.len() - (offset as usize) < size {
Err(AeronError::OutOfBounds)
} else {
Ok(())
@ -51,6 +51,7 @@ mod tests {
use std::sync::atomic::{AtomicU64, Ordering};
use crate::client::concurrent::atomic_buffer::AtomicBuffer;
use crate::util::AeronError;
#[test]
fn mmap_to_atomic() {
@ -89,4 +90,20 @@ mod tests {
assert_eq!(atomic_buf.get_and_add_i64(1, 1), Ok(16));
assert_eq!(atomic_buf.get_and_add_i64(1, 0), Ok(17));
}
#[test]
fn out_of_bounds() {
let mut buf = [16, 0, 0, 0, 0, 0, 0];
let atomic_buf = AtomicBuffer::wrap(&mut buf);
assert_eq!(atomic_buf.get_and_add_i64(0, 0), Err(AeronError::OutOfBounds));
}
#[test]
fn out_of_bounds_offset() {
let mut buf = [16, 0, 0, 0, 0, 0, 0, 0];
let atomic_buf = AtomicBuffer::wrap(&mut buf);
assert_eq!(atomic_buf.get_and_add_i64(1, 0), Err(AeronError::OutOfBounds));
}
}