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refactor: Use unlikely in Buffer::reserve()

This commit is contained in:
Kogia-sima 2020-11-30 12:19:03 +09:00
parent 541ecb91ef
commit 72b061ee3e
1 changed files with 3 additions and 6 deletions
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9
sailfish/src/runtime/buffer.rs
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@ -91,10 +91,9 @@ impl Buffer {
#[inline]
pub fn reserve(&mut self, size: usize) {
if size <= self.capacity.wrapping_sub(self.len) {
return;
if unlikely!(size > self.capacity.wrapping_sub(self.len)) {
self.reserve_internal(size);
}
self.reserve_internal(size);
debug_assert!(self.len + size <= self.capacity);
}
@ -117,9 +116,7 @@ impl Buffer {
#[inline]
pub fn push_str(&mut self, data: &str) {
let size = data.len();
if unlikely!(size > self.capacity.wrapping_sub(self.len)) {
self.reserve_internal(size);
}
self.reserve(size);
unsafe {
let p = self.data.add(self.len);
std::ptr::copy_nonoverlapping(data.as_ptr(), p, size);