// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package debug

import (
	"time"
)

// Implemented in package runtime.
func readGCStats(*[]time.Duration)
func freeOSMemory()
func setMaxStack(int) int
func setGCPercent(int32) int32
func setPanicOnFault(bool) bool
func setMaxThreads(int) int

	var mstats runtime.MemStats
	var min, max time.Duration

	// First ReadGCStats will allocate, second should not,
	// especially if we follow up with an explicit garbage collection.
	stats.PauseQuantiles = make([]time.Duration, 10)
	ReadGCStats(&stats)
	runtime.GC()

	// Assume these will return same data: no GC during ReadGCStats.
	ReadGCStats(&stats)
	runtime.ReadMemStats(&mstats)

	if stats.NumGC != int64(mstats.NumGC) {

	gcStats := debug.GCStats{
		// If stats.PauseQuantiles is non-empty, ReadGCStats fills
		// it with quantiles summarizing the distribution of pause time.
		// For example, if len(stats.PauseQuantiles) is 5, it will be
		// filled with the minimum, 25%, 50%, 75%, and maximum pause times.
		PauseQuantiles: make([]time.Duration, 5),
	}
	debug.ReadGCStats(&gcStats)
	// Truncate GC stats to max 5 entries.
	if len(gcStats.PauseEnd) > 5 {