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Benchmark with a longer string

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This commit is contained in:
Carles Fernandez 2020-07-28 11:02:29 +02:00
parent b33d7ba739
commit 6cc96b039f
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GPG Key ID: 4C583C52B0C3877D
1 changed files with 17 additions and 5 deletions
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22
src/tests/benchmarks/benchmark_preamble.cc
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@ -25,13 +25,14 @@
void bm_forloop(benchmark::State& state) void bm_forloop(benchmark::State& state)
{ {
std::array<int32_t, GPS_CA_PREAMBLE_LENGTH_BITS> d_preamble_samples{}; std::array<int32_t, GPS_CA_PREAMBLE_LENGTH_SYMBOLS> d_preamble_samples{};
volatile int32_t res; // Prevent the compiler from optimizing the loop away
while (state.KeepRunning()) while (state.KeepRunning())
{ {
int32_t n = 0; int32_t n = 0;
for (int32_t i = 0; i < GPS_CA_PREAMBLE_LENGTH_BITS; i++) for (int32_t i = 0; i < GPS_CA_PREAMBLE_LENGTH_SYMBOLS; i++)
{ {
if (GPS_CA_PREAMBLE[i] == '1') if (GPS_CA_PREAMBLE_SYMBOLS_STR[i] == '1')
{ {
d_preamble_samples[n] = 1; d_preamble_samples[n] = 1;
n++; n++;
@ -42,16 +43,27 @@ void bm_forloop(benchmark::State& state)
n++; n++;
} }
} }
res = d_preamble_samples[GPS_CA_PREAMBLE_LENGTH_SYMBOLS - 1];
}
if (res > 1)
{
// Avoid unused-but-set-variable warning
} }
} }
void bm_generate(benchmark::State& state) void bm_generate(benchmark::State& state)
{ {
std::array<int32_t, GPS_CA_PREAMBLE_LENGTH_BITS> d_preamble_samples{}; std::array<int32_t, GPS_CA_PREAMBLE_LENGTH_SYMBOLS> d_preamble_samples{};
volatile int32_t res; // Prevent the compiler from optimizing the loop away
while (state.KeepRunning()) while (state.KeepRunning())
{ {
std::generate(d_preamble_samples.begin(), d_preamble_samples.end(), [n = 0]() mutable { return (GPS_CA_PREAMBLE[n++] == '1' ? 1 : -1); }); std::generate(d_preamble_samples.begin(), d_preamble_samples.end(), [n = 0]() mutable { return (GPS_CA_PREAMBLE_SYMBOLS_STR[n++] == '1' ? 1 : -1); });
res = d_preamble_samples[GPS_CA_PREAMBLE_LENGTH_SYMBOLS - 1];
}
if (res > 1)
{
// Avoid unused-but-set-variable warning
} }
} }