Alexey Lapshin b3ae652f21 feat(build): add CONFIG_COMPILER_CXX_ATOMIC_LOCK_POLICY option ...

libstdc++ selects between a lock-free and a mutex-based policy for
std::shared_ptr reference counting based on this macro. Enabling this
option forces the lock-free policy, which avoids pulling in the
mutex-based implementation and can reduce code size.

Note: the lock-free policy avoids embedding a mutex in each control
block, saving about 88 bytes per shared_ptr, and improves performance
by using atomic operations instead of mutex locking.

Note: this option changes the ABI of libstdc++ atomic/shared_ptr
helpers. It can be incompatible when linking against prebuilt
libraries that were compiled without it, leading to link errors or
undefined runtime behavior. Only enable it if all C++ objects and
libraries in the build use the same setting.

2026-07-23 18:20:25 +07:00

..

index.rst

docs: provide CN translation for api-guides/performance/ram-usage.rst

2023-07-25 19:04:41 +08:00

ram-usage.rst

feat(build): add CONFIG_COMPILER_CXX_ATOMIC_LOCK_POLICY option

2026-07-23 18:20:25 +07:00

size.rst

docs(performance): mention LTO in the optimizing-for-size guide

2026-07-14 19:32:19 +02:00

speed.rst

fix(bt): fixed some h4 issues reported by ci pipeline

2026-04-02 14:59:41 +08:00