mirror of https://go.googlesource.com/go
104 lines
1.8 KiB
Go
104 lines
1.8 KiB
Go
// Copyright 2021 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package cgo
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import (
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"reflect"
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"testing"
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)
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func TestHandle(t *testing.T) {
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v := 42
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tests := []struct {
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v1 any
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v2 any
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}{
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{v1: v, v2: v},
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{v1: &v, v2: &v},
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{v1: nil, v2: nil},
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}
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for _, tt := range tests {
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h1 := NewHandle(tt.v1)
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h2 := NewHandle(tt.v2)
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if uintptr(h1) == 0 || uintptr(h2) == 0 {
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t.Fatalf("NewHandle returns zero")
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}
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if uintptr(h1) == uintptr(h2) {
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t.Fatalf("Duplicated Go values should have different handles, but got equal")
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}
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h1v := h1.Value()
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h2v := h2.Value()
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if !reflect.DeepEqual(h1v, h2v) || !reflect.DeepEqual(h1v, tt.v1) {
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t.Fatalf("Value of a Handle got wrong, got %+v %+v, want %+v", h1v, h2v, tt.v1)
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}
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h1.Delete()
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h2.Delete()
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}
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siz := 0
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handles.Range(func(k, v any) bool {
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siz++
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return true
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})
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if siz != 0 {
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t.Fatalf("handles are not cleared, got %d, want %d", siz, 0)
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}
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}
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func TestInvalidHandle(t *testing.T) {
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t.Run("zero", func(t *testing.T) {
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h := Handle(0)
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defer func() {
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if r := recover(); r != nil {
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return
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}
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t.Fatalf("Delete of zero handle did not trigger a panic")
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}()
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h.Delete()
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})
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t.Run("invalid", func(t *testing.T) {
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h := NewHandle(42)
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defer func() {
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if r := recover(); r != nil {
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h.Delete()
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return
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}
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t.Fatalf("Invalid handle did not trigger a panic")
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}()
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Handle(h + 1).Delete()
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})
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}
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func BenchmarkHandle(b *testing.B) {
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b.Run("non-concurrent", func(b *testing.B) {
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for i := 0; i < b.N; i++ {
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h := NewHandle(i)
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_ = h.Value()
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h.Delete()
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}
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})
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b.Run("concurrent", func(b *testing.B) {
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b.RunParallel(func(pb *testing.PB) {
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var v int
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for pb.Next() {
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h := NewHandle(v)
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_ = h.Value()
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h.Delete()
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}
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})
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})
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}
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