Editing: msize_noallocheaders.go

// Copyright 2009 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. //go:build !goexperiment.allocheaders // Malloc small size classes. // // See malloc.go for overview. // See also mksizeclasses.go for how we decide what size classes to use. package runtime // Returns size of the memory block that mallocgc will allocate if you ask for the size. // // The noscan argument is purely for compatibility with goexperiment.AllocHeaders. func roundupsize(size uintptr, noscan bool) uintptr { if size < _MaxSmallSize { if size <= smallSizeMax-8 { return uintptr(class_to_size[size_to_class8[divRoundUp(size, smallSizeDiv)]]) } else { return uintptr(class_to_size[size_to_class128[divRoundUp(size-smallSizeMax, largeSizeDiv)]]) } } if size+_PageSize < size { return size } return alignUp(size, _PageSize) }

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