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>
diff --git a/src/runtime/stubs.go b/src/runtime/stubs.go
index 9aa83ef..00f74f8 100644
--- a/src/runtime/stubs.go
+++ b/src/runtime/stubs.go
@@ -239,3 +239,13 @@
func prefetcht1(addr uintptr)
func prefetcht2(addr uintptr)
func prefetchnta(addr uintptr)
+
+func unixnanotime() int64 {
+ sec, nsec := time_now()
+ return sec*1e9 + int64(nsec)
+}
+
+// round n up to a multiple of a. a must be a power of 2.
+func round(n, a uintptr) uintptr {
+ return (n + a - 1) &^ (a - 1)
+}
