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| author | Russ Cox <rsc@golang.org> | 2015-02-19 13:38:46 -0500 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2015-02-19 20:17:01 +0000 |
| commit | 484f801ff4125d86f8c4072f070611afea9c79f7 (patch) | |
| tree | 6609ead9e0e6dabd5565800a5c5f80a89211ef75 /src/runtime/msize.go | |
| parent | d384545a4580cf1f6990efee5f0047ec60f4258d (diff) | |
| download | go-484f801ff4125d86f8c4072f070611afea9c79f7.tar.gz go-484f801ff4125d86f8c4072f070611afea9c79f7.zip | |
runtime: reorganize memory code
Move code from malloc1.go, malloc2.go, mem.go, mgc0.go into
appropriate locations.
Factor mgc.go into mgc.go, mgcmark.go, mgcsweep.go, mstats.go.
A lot of this code was in certain files because the right place was in
a C file but it was written in Go, or vice versa. This is one step toward
making things actually well-organized again.
Change-Id: I6741deb88a7cfb1c17ffe0bcca3989e10207968f
Reviewed-on: https://go-review.googlesource.com/5300
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Rick Hudson <rlh@golang.org>
Diffstat (limited to 'src/runtime/msize.go')
| -rw-r--r-- | src/runtime/msize.go | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/src/runtime/msize.go b/src/runtime/msize.go index a113b0d963..370cae629e 100644 --- a/src/runtime/msize.go +++ b/src/runtime/msize.go @@ -27,8 +27,15 @@ package runtime -//var class_to_size [_NumSizeClasses]int32 -//var class_to_allocnpages [_NumSizeClasses]int32 +// Size classes. Computed and initialized by InitSizes. +// +// SizeToClass(0 <= n <= MaxSmallSize) returns the size class, +// 1 <= sizeclass < NumSizeClasses, for n. +// Size class 0 is reserved to mean "not small". +// +// class_to_size[i] = largest size in class i +// class_to_allocnpages[i] = number of pages to allocate when +// making new objects in class i // The SizeToClass lookup is implemented using two arrays, // one mapping sizes <= 1024 to their class and one mapping @@ -38,8 +45,11 @@ package runtime // are 128-aligned, so the second array is indexed by the // size divided by 128 (rounded up). The arrays are filled in // by InitSizes. -//var size_to_class8 [1024/8 + 1]int8 -//var size_to_class128 [(_MaxSmallSize-1024)/128 + 1]int8 + +var class_to_size [_NumSizeClasses]int32 +var class_to_allocnpages [_NumSizeClasses]int32 +var size_to_class8 [1024/8 + 1]int8 +var size_to_class128 [(_MaxSmallSize-1024)/128 + 1]int8 func sizeToClass(size int32) int32 { if size > _MaxSmallSize { |