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[dev.cc] runtime: convert memory allocator and garbage collector to Go

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The conversion was done with an automated tool and then
modified only as necessary to make it compile and run.

[This CL is part of the removal of C code from package runtime.
See golang.org/s/dev.cc for an overview.]

LGTM=r
R=r
CC=austin, dvyukov, golang-codereviews, iant, khr
https://golang.org/cl/167540043
This commit is contained in:
Russ Cox 2014-11-11 17:05:02 -05:00
parent d98553a727
commit 1e2d2f0947
30 changed files with 4923 additions and 5691 deletions
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8
src/runtime/slice.go
View file

@ -22,11 +22,11 @@ func makeslice(t *slicetype, len64 int64, cap64 int64) sliceStruct {
// but since the cap is only being supplied implicitly, saying len is clearer.
// See issue 4085.
len := int(len64)
if len64 < 0 || int64(len) != len64 || t.elem.size > 0 && uintptr(len) > maxmem/uintptr(t.elem.size) {
if len64 < 0 || int64(len) != len64 || t.elem.size > 0 && uintptr(len) > _MaxMem/uintptr(t.elem.size) {
panic(errorString("makeslice: len out of range"))
}
cap := int(cap64)
if cap < len || int64(cap) != cap64 || t.elem.size > 0 && uintptr(cap) > maxmem/uintptr(t.elem.size) {
if cap < len || int64(cap) != cap64 || t.elem.size > 0 && uintptr(cap) > _MaxMem/uintptr(t.elem.size) {
panic(errorString("makeslice: cap out of range"))
}
p := newarray(t.elem, uintptr(cap))
@ -42,7 +42,7 @@ func growslice(t *slicetype, old sliceStruct, n int64) sliceStruct {
cap64 := int64(old.cap) + n
cap := int(cap64)
if int64(cap) != cap64 || cap < old.cap || t.elem.size > 0 && uintptr(cap) > maxmem/uintptr(t.elem.size) {
if int64(cap) != cap64 || cap < old.cap || t.elem.size > 0 && uintptr(cap) > _MaxMem/uintptr(t.elem.size) {
panic(errorString("growslice: cap out of range"))
}
@ -72,7 +72,7 @@ func growslice(t *slicetype, old sliceStruct, n int64) sliceStruct {
}
}
if uintptr(newcap) >= maxmem/uintptr(et.size) {
if uintptr(newcap) >= _MaxMem/uintptr(et.size) {
panic(errorString("growslice: cap out of range"))
}
lenmem := uintptr(old.len) * uintptr(et.size)