fbstring is a drop-in replacement for
std::string. The main
fbstring is significantly increased performance on
virtually all important primitives. This is achieved by using a
three-tiered storage strategy and by cooperating with the memory
allocator. In particular,
fbstring is designed to detect use of
jemalloc and cooperate with it to achieve significant improvements in
speed and memory usage.
fbstring supports x32 and x64 architectures. Porting it to big endian
architectures would require some changes.
Small strings (<= 23 chars) are stored in-situ without memory allocation.
Medium strings (24 - 255 chars) are stored in malloc-allocated memory and copied eagerly.
Large strings (> 255 chars) are stored in malloc-allocated memory and copied lazily.
100% compatible with
Thread-safe reference counted copy-on-write for strings "large" strings (> 255 chars).
mallocinstead of allocators.
fbstringautomatically detects if application uses jemalloc and if so, significantly improves allocation strategy by using non-standard jemalloc extensions.
find()is implemented using simplified Boyer-Moore algorithm. Casual tests indicate a 30x speed improvement over
string::find()for successful searches and a 1.5x speed improvement for failed searches.
Offers conversions to and from