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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
commit | ccd992355df7192993c666236047820244914598 (patch) | |
tree | f00fea65147227b7743083c6148396f74cd66935 /src/runtime/rand_test.go | |
parent | Initial commit. (diff) | |
download | golang-1.21-ccd992355df7192993c666236047820244914598.tar.xz golang-1.21-ccd992355df7192993c666236047820244914598.zip |
Adding upstream version 1.21.8.upstream/1.21.8
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/runtime/rand_test.go | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/runtime/rand_test.go b/src/runtime/rand_test.go new file mode 100644 index 0000000..92d07eb --- /dev/null +++ b/src/runtime/rand_test.go @@ -0,0 +1,53 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package runtime_test + +import ( + . "runtime" + "strconv" + "testing" +) + +func BenchmarkFastrand(b *testing.B) { + b.RunParallel(func(pb *testing.PB) { + for pb.Next() { + Fastrand() + } + }) +} + +func BenchmarkFastrand64(b *testing.B) { + b.RunParallel(func(pb *testing.PB) { + for pb.Next() { + Fastrand64() + } + }) +} + +func BenchmarkFastrandHashiter(b *testing.B) { + var m = make(map[int]int, 10) + for i := 0; i < 10; i++ { + m[i] = i + } + b.RunParallel(func(pb *testing.PB) { + for pb.Next() { + for range m { + break + } + } + }) +} + +var sink32 uint32 + +func BenchmarkFastrandn(b *testing.B) { + for n := uint32(2); n <= 5; n++ { + b.Run(strconv.Itoa(int(n)), func(b *testing.B) { + for i := 0; i < b.N; i++ { + sink32 = Fastrandn(n) + } + }) + } +} |