This vector implementation does is optimized for the case of having only a small number of elements, which are stored directly on the vector object rather than being allocated from the heap. If the capacity exceeds this small number, then a heap allocation is done.
This should improve performance in a couple of cases where vectors typically store 1 element and rarely more than that.
The Blowfish cipher is no longer available on OpenSSL 3.x by default. It requires enabling the legacy cipher suite, which is compiled separately from the main OpenSSL library. AES-256 is a good replacement cipher that has hardware support in most newer computers. AES-256 is also available in OpenSSL 1.0.2.
init_memory_hook() is no longer required, eliminating static initialization order issues
This required moving the DeletedBufferChain map elsewhere, which now also has a const-initialized array for relatively small allocations.
Also, deletedChain.T has been renamed to deletedChain.I
Fixes#539
Matching makepanda, this avoids symbol conflicts and may have optimization benefits.
This is a temporary hack until CMake 3.24 is released, which offers a cleaner way of doing this.
This typedefs to std::atomic<> when building with true threading, and uses a dummy implementation without.
This lets us use the full range of atomic operations offered by C++11, including explicit specification of memory fences. Using barriers lets the compiler generate more optimal code since currently we are using the quite strict sequential-consistent memory ordering for all operations. ReferenceCount has been changed to use the correct barriers (I hope). This may especially make a difference on weak ordering systems such as ARM.
Over time we should gradually replace the use of AtomicAdjust with the new patomic file.
The current value is not pickled. I might change my mind on this, but my thinking is that ConfigVariable doesn't really contain a value, it's just an accessor for a value from the config page, so the current state of the variables should be pickled with the config pages.
This is due to python/cpython#21074, which causes a segfault in the latest Python master when creating a bytes object of size 0.
readlines() has been reimplemented to use a C++ vector in order to prevent constantly re-locking and unlocking the GIL for every line.
rdb
WMOkiishi
Frang
Cary Sandvig
Disyer
Leandro (Cerberus1746) Benedet Garcia
Sam Edwards