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runtime: tidy GC driver

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Change-Id: I0da26e89ae73272e49e82c6549c774e5bc97f64c
Reviewed-on: https://go-review.googlesource.com/5331
Reviewed-by: Austin Clements <austin@google.com>
This commit is contained in:
Russ Cox 2015-02-19 15:48:40 -05:00
parent 6e70fddec0
commit 2b655c0b92
4 changed files with 97 additions and 125 deletions
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6
src/runtime/mheap.go
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@ -747,8 +747,10 @@ func mHeap_Scavenge(k int32, now, limit uint64) {
}
}
func scavenge_m() {
mHeap_Scavenge(-1, ^uint64(0), 0)
//go:linkname runtime_debug_freeOSMemory runtime/debug.freeOSMemory
func runtime_debug_freeOSMemory() {
startGC(gcForceBlockMode)
systemstack(func() { mHeap_Scavenge(-1, ^uint64(0), 0) })
}
// Initialize a new span with the given start and npages.