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[dev.garbage] runtime: replace ref with allocCount

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This is a renaming of the field ref to the
more appropriate allocCount. The field
holds the number of objects in the span
that are currently allocated. Some throws
strings were adjusted to more accurately
convey the meaning of allocCount.

Change-Id: I10daf44e3e9cc24a10912638c7de3c1984ef8efe
Reviewed-on: https://go-review.googlesource.com/19518
Reviewed-by: Austin Clements <austin@google.com>
This commit is contained in:
Rick Hudson 2016-02-16 17:16:43 -05:00
parent 3479b065d4
commit e4ac2d4acc
6 changed files with 31 additions and 31 deletions
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12
src/runtime/stack.go
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@ -191,8 +191,8 @@ func stackpoolalloc(order uint8) gclinkptr {
if s == nil {
throw("out of memory")
}
if s.ref != 0 {
throw("bad ref")
if s.allocCount != 0 {
throw("bad allocCount")
}
if s.stackfreelist.ptr() != nil {
throw("bad stackfreelist")
@ -209,7 +209,7 @@ func stackpoolalloc(order uint8) gclinkptr {
throw("span has no free stacks")
}
s.stackfreelist = x.ptr().next
s.ref++
s.allocCount++
if s.stackfreelist.ptr() == nil {
// all stacks in s are allocated.
list.remove(s)
@ -229,8 +229,8 @@ func stackpoolfree(x gclinkptr, order uint8) {
}
x.ptr().next = s.stackfreelist
s.stackfreelist = x
s.ref--
if gcphase == _GCoff && s.ref == 0 {
s.allocCount--
if gcphase == _GCoff && s.allocCount == 0 {
// Span is completely free. Return it to the heap
// immediately if we're sweeping.
//
@ -1135,7 +1135,7 @@ func freeStackSpans() {
list := &stackpool[order]
for s := list.first; s != nil; {
next := s.next
if s.ref == 0 {
if s.allocCount == 0 {
list.remove(s)
s.stackfreelist = 0
mheap_.freeStack(s)