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runtime: rename shouldhelpgc to checkGCTrigger in mallocgc

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shouldhelpgc is a very unhelpful name, because it has nothing to do with
assists and solely to do with GC triggering. Name it checkGCTrigger
instead, which is much clearer.

Change-Id: Id38debd424ddb397376c0cea6e74b3fe94002f71
Reviewed-on: https://go-review.googlesource.com/c/go/+/617877
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Michael Anthony Knyszek 2024-10-03 18:27:01 +00:00 committed by Gopher Robot
parent 8df6413e11
commit e750a0cdb3
1 changed files with 8 additions and 8 deletions
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16
src/runtime/malloc.go
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@ -942,9 +942,9 @@ func nextFreeFast(s *mspan) gclinkptr {
//
// Must run in a non-preemptible context since otherwise the owner of
// c could change.
func (c *mcache) nextFree(spc spanClass) (v gclinkptr, s *mspan, shouldhelpgc bool) {
func (c *mcache) nextFree(spc spanClass) (v gclinkptr, s *mspan, checkGCTrigger bool) {
s = c.alloc[spc]
shouldhelpgc = false
checkGCTrigger = false
freeIndex := s.nextFreeIndex()
if freeIndex == s.nelems {
// The span is full.
@ -953,7 +953,7 @@ func (c *mcache) nextFree(spc spanClass) (v gclinkptr, s *mspan, shouldhelpgc bo
throw("s.allocCount != s.nelems && freeIndex == s.nelems")
}
c.refill(spc)
shouldhelpgc = true
checkGCTrigger = true
s = c.alloc[spc]
freeIndex = s.nextFreeIndex()
@ -1057,7 +1057,7 @@ func mallocgc(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
}
mp.mallocing = 1
shouldhelpgc := false
checkGCTrigger := false
dataSize := userSize
c := getMCache(mp)
if c == nil {
@ -1140,7 +1140,7 @@ func mallocgc(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
span = c.alloc[tinySpanClass]
v := nextFreeFast(span)
if v == 0 {
v, span, shouldhelpgc = c.nextFree(tinySpanClass)
v, span, checkGCTrigger = c.nextFree(tinySpanClass)
}
x = unsafe.Pointer(v)
(*[2]uint64)(x)[0] = 0
@ -1169,7 +1169,7 @@ func mallocgc(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
span = c.alloc[spc]
v := nextFreeFast(span)
if v == 0 {
v, span, shouldhelpgc = c.nextFree(spc)
v, span, checkGCTrigger = c.nextFree(spc)
}
x = unsafe.Pointer(v)
if needzero && span.needzero != 0 {
@ -1182,7 +1182,7 @@ func mallocgc(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
}
}
} else {
shouldhelpgc = true
checkGCTrigger = true
// For large allocations, keep track of zeroed state so that
// bulk zeroing can be happen later in a preemptible context.
span = c.allocLarge(size, noscan)
@ -1306,7 +1306,7 @@ func mallocgc(size uintptr, typ *_type, needzero bool) unsafe.Pointer {
}
}
if shouldhelpgc {
if checkGCTrigger {
if t := (gcTrigger{kind: gcTriggerHeap}); t.test() {
gcStart(t)
}