walkero
/
harfbuzz
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[benchmark-map] Remove rand() overhead from benchmark

This commit is contained in:
Behdad Esfahbod 2022-04-29 13:14:41 -06:00
parent 067225a86d
commit 5866ec05f5
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
perf/benchmark-map.cc
View File

@ -29,11 +29,13 @@ static void BM_MapInsert(benchmark::State& state) {
RandomMap(map_size, original); RandomMap(map_size, original);
assert(hb_map_get_population(original) == map_size); assert(hb_map_get_population(original) == map_size);
auto needle = map_size / 2;
auto v = 0;
for (auto _ : state) { for (auto _ : state) {
// TODO(garretrieger): create a copy of the original map. // TODO(garretrieger): create a copy of the original map.
// Needs a hb_map_copy(..) in public api. // Needs a hb_map_copy(..) in public api.
hb_map_set (original, rand (), rand ()); hb_map_set (original, needle++, v++);
} }
hb_map_destroy(original); hb_map_destroy(original);
@ -49,9 +51,11 @@ static void BM_MapLookup(benchmark::State& state) {
RandomMap(map_size, original); RandomMap(map_size, original);
assert(hb_map_get_population(original) == map_size); assert(hb_map_get_population(original) == map_size);
auto needle = map_size / 2;
for (auto _ : state) { for (auto _ : state) {
benchmark::DoNotOptimize( benchmark::DoNotOptimize(
hb_map_get (original, rand())); hb_map_get (original, needle++));
} }
hb_map_destroy(original); hb_map_destroy(original);