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[core] Add uint32_to_str helper and use in preferences (#15597)

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This commit is contained in:
J. Nick Koston
2026-04-14 07:49:44 -10:00
committed by GitHub
parent 5ba8c644e4
commit cf01163c8c
6 changed files with 170 additions and 16 deletions
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56
tests/benchmarks/core/bench_helpers.cpp
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@@ -1,4 +1,6 @@
#include <benchmark/benchmark.h>
#include <cinttypes>
#include <cstdio>
#include "esphome/core/helpers.h"
@@ -307,4 +309,58 @@ static void Base64Decode_32Bytes(benchmark::State &state) {
}
BENCHMARK(Base64Decode_32Bytes);
// --- uint32_to_str() vs snprintf ---
static void Uint32ToStr_Small(benchmark::State &state) {
char buf[UINT32_MAX_STR_SIZE];
for (auto _ : state) {
for (int i = 0; i < kInnerIterations; i++) {
uint32_to_str(buf, 12345);
benchmark::DoNotOptimize(buf);
benchmark::ClobberMemory();
}
}
state.SetItemsProcessed(state.iterations() * kInnerIterations);
}
BENCHMARK(Uint32ToStr_Small);
static void Snprintf_Uint32_Small(benchmark::State &state) {
char buf[UINT32_MAX_STR_SIZE];
for (auto _ : state) {
for (int i = 0; i < kInnerIterations; i++) {
snprintf(buf, sizeof(buf), "%" PRIu32, static_cast<uint32_t>(12345));
benchmark::DoNotOptimize(buf);
benchmark::ClobberMemory();
}
}
state.SetItemsProcessed(state.iterations() * kInnerIterations);
}
BENCHMARK(Snprintf_Uint32_Small);
static void Uint32ToStr_Large(benchmark::State &state) {
char buf[UINT32_MAX_STR_SIZE];
for (auto _ : state) {
for (int i = 0; i < kInnerIterations; i++) {
uint32_to_str(buf, 4294967295u);
benchmark::DoNotOptimize(buf);
benchmark::ClobberMemory();
}
}
state.SetItemsProcessed(state.iterations() * kInnerIterations);
}
BENCHMARK(Uint32ToStr_Large);
static void Snprintf_Uint32_Large(benchmark::State &state) {
char buf[UINT32_MAX_STR_SIZE];
for (auto _ : state) {
for (int i = 0; i < kInnerIterations; i++) {
snprintf(buf, sizeof(buf), "%" PRIu32, static_cast<uint32_t>(4294967295u));
benchmark::DoNotOptimize(buf);
benchmark::ClobberMemory();
}
}
state.SetItemsProcessed(state.iterations() * kInnerIterations);
}
BENCHMARK(Snprintf_Uint32_Large);
} // namespace esphome::benchmarks