issue16008.go

     1  // errorcheck -0 -race
     2  
     3  //go:build (linux && amd64) || (linux && ppc64le) || (darwin && amd64) || (freebsd && amd64) || (netbsd && amd64) || (windows && amd64)
     4  
     5  // Copyright 2016 The Go Authors. All rights reserved.
     6  // Use of this source code is governed by a BSD-style
     7  // license that can be found in the LICENSE file.
     8  
     9  package foo
    10  
    11  const benchmarkNumNodes = 10000
    12  
    13  func BenchmarkUpdateNodeTransaction(b B) {
    14  	s, nodeIDs := setupNodes(benchmarkNumNodes)
    15  	b.ResetTimer()
    16  	for i := 0; i < b.N(); i++ {
    17  		_ = s.Update(func(tx1 Tx) error {
    18  			_ = UpdateNode(tx1, &Node{
    19  				ID: nodeIDs[i%benchmarkNumNodes],
    20  			})
    21  			return nil
    22  		})
    23  	}
    24  }
    25  
    26  type B interface {
    27  	ResetTimer()
    28  	N() int
    29  }
    30  
    31  type Tx interface {
    32  }
    33  
    34  type Node struct {
    35  	ID string
    36  }
    37  
    38  type MemoryStore struct {
    39  }
    40  
    41  //go:noinline
    42  func setupNodes(n int) (s *MemoryStore, nodeIDs []string) {
    43  	return
    44  }
    45  
    46  //go:noinline
    47  func (s *MemoryStore) Update(cb func(Tx) error) error {
    48  	return nil
    49  }
    50  
    51  var sink interface{}
    52  
    53  //go:noinline
    54  func UpdateNode(tx Tx, n *Node) error {
    55  	sink = tx
    56  	sink = n
    57  	return nil
    58  }
    59
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