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fix: limit warning issue (#5807)

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Signed-off-by: Henry Schreiner <henryschreineriii@gmail.com>
This commit is contained in:
Henry Schreiner
2025-08-21 16:07:26 -04:00
committed by GitHub
parent e71489c314
commit cddec2bb1d
1 changed files with 6 additions and 2 deletions
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8
include/pybind11/detail/internals.h
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@@ -18,7 +18,9 @@
#include "struct_smart_holder.h" #include "struct_smart_holder.h"
#include <atomic> #include <atomic>
#include <cstdint>
#include <exception> #include <exception>
#include <limits>
#include <mutex> #include <mutex>
#include <thread> #include <thread>
@@ -274,8 +276,10 @@ struct internals {
registered_exception_translators.push_front(&translate_exception); registered_exception_translators.push_front(&translate_exception);
#ifdef Py_GIL_DISABLED #ifdef Py_GIL_DISABLED
// Scale proportional to the number of cores. 2x is a heuristic to reduce contention. // Scale proportional to the number of cores. 2x is a heuristic to reduce contention.
auto num_shards // Make sure the number isn't unreasonable by limiting it to 16 bits (65K)
= static_cast<size_t>(round_up_to_next_pow2(2 * std::thread::hardware_concurrency())); auto num_shards = static_cast<std::uint16_t>(
std::min<std::size_t>(round_up_to_next_pow2(2 * std::thread::hardware_concurrency()),
std::numeric_limits<std::uint16_t>::max()));
if (num_shards == 0) { if (num_shards == 0) {
num_shards = 1; num_shards = 1;
} }