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Current Path: /opt/golang/1.22.0/src/testing

📁 ..
📄 allocs.go(1.36 KB)
📄 allocs_test.go(817 B)
📄 benchmark.go(23.85 KB)
📄 benchmark_test.go(5.56 KB)
📄 cover.go(3.41 KB)
📄 example.go(2.75 KB)
📄 export_test.go(207 B)
📄 flag_test.go(2.01 KB)
📁 fstest
📄 fuzz.go(22.85 KB)
📄 helper_test.go(2.64 KB)
📄 helperfuncs_test.go(2.44 KB)
📁 internal
📁 iotest
📄 match.go(7.69 KB)
📄 match_test.go(7.99 KB)
📄 newcover.go(1.75 KB)
📄 panic_test.go(7.36 KB)
📁 quick
📄 run_example.go(1.29 KB)
📄 run_example_wasm.go(1.76 KB)
📁 slogtest
📄 sub_test.go(23.8 KB)
📄 testing.go(75.62 KB)
📄 testing_other.go(386 B)
📄 testing_test.go(19.24 KB)
📄 testing_windows.go(751 B)

Editing: allocs.go

// Copyright 2013 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 testing

import (
	"runtime"
)

// AllocsPerRun returns the average number of allocations during calls to f.
// Although the return value has type float64, it will always be an integral value.
//
// To compute the number of allocations, the function will first be run once as
// a warm-up. The average number of allocations over the specified number of
// runs will then be measured and returned.
//
// AllocsPerRun sets GOMAXPROCS to 1 during its measurement and will restore
// it before returning.
func AllocsPerRun(runs int, f func()) (avg float64) {
	defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(1))

// Warm up the function
	f()

// Measure the starting statistics
	var memstats runtime.MemStats
	runtime.ReadMemStats(&memstats)
	mallocs := 0 - memstats.Mallocs

// Run the function the specified number of times
	for i := 0; i < runs; i++ {
		f()
	}

// Read the final statistics
	runtime.ReadMemStats(&memstats)
	mallocs += memstats.Mallocs

// Average the mallocs over the runs (not counting the warm-up).
	// We are forced to return a float64 because the API is silly, but do
	// the division as integers so we can ask if AllocsPerRun()==1
	// instead of AllocsPerRun()<2.
	return float64(mallocs / uint64(runs))
}

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Editing: allocs.go

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