diff options
| -rw-r--r-- | courgette/memory_allocator.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/courgette/memory_allocator.h b/courgette/memory_allocator.h index 5386dad..ada7f40 100644 --- a/courgette/memory_allocator.h +++ b/courgette/memory_allocator.h @@ -333,6 +333,12 @@ class NoThrowBuffer { if (size < kStartSize) size = kStartSize; + // Use a size 1% higher than requested. In practice, this makes Courgette as + // much as 5x faster on typical Chrome update payloads as a lot of future + // reserve() calls will become no-ops instead of costly resizes that copy + // all the data. Note that doing this here instead of outside the function + // is more efficient, since it's after the no-op early return checks above. + size *= 1.01; T* new_buffer = alloc_.allocate(size); if (!new_buffer) { clear(); |