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alloc_test.go
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alloc_test.go
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package skiplist
import (
"testing"
"unsafe"
)
func TestAlloc(t *testing.T) {
println("node size", unsafe.Sizeof(node{}))
println("l1node size", unsafe.Sizeof(l1node{}))
}
func BenchmarkAllocNode(b *testing.B) {
for i := 0; i < b.N; i++ {
allocNode(nil, 1)
allocNode(nil, 1)
allocNode(nil, 1)
allocNode(nil, 1)
allocNode(nil, 2)
allocNode(nil, 2)
allocNode(nil, 3)
allocNode(nil, 1)
allocNode(nil, 1)
allocNode(nil, 1)
allocNode(nil, 1)
allocNode(nil, 2)
allocNode(nil, 2)
allocNode(nil, 3)
allocNode(nil, 4)
}
}
type oldnode struct {
item Item
forward []*node
}
func oldAllocNode(item Item, level int) *oldnode {
return &oldnode{
item: item,
forward: make([]*node, level),
}
}
func BenchmarkAllocNodeOld(b *testing.B) {
for i := 0; i < b.N; i++ {
oldAllocNode(nil, 1)
oldAllocNode(nil, 1)
oldAllocNode(nil, 1)
oldAllocNode(nil, 1)
oldAllocNode(nil, 2)
oldAllocNode(nil, 2)
oldAllocNode(nil, 3)
oldAllocNode(nil, 1)
oldAllocNode(nil, 1)
oldAllocNode(nil, 1)
oldAllocNode(nil, 1)
oldAllocNode(nil, 2)
oldAllocNode(nil, 2)
oldAllocNode(nil, 3)
oldAllocNode(nil, 4)
}
}