runtime: convert select implementation to Go.
LGTM=rsc
R=golang-codereviews, bradfitz, iant, khr, rsc
CC=golang-codereviews
https://golang.org/cl/139020043
diff --git a/src/pkg/runtime/race.go b/src/pkg/runtime/race.go
index 3707549..df8493e 100644
--- a/src/pkg/runtime/race.go
+++ b/src/pkg/runtime/race.go
@@ -45,3 +45,16 @@
racereadpc(addr, callerpc, pc)
}
}
+
+func raceWriteObjectPC(t *_type, addr unsafe.Pointer, callerpc, pc uintptr) {
+ kind := t.kind & kindMask
+ if kind == kindArray || kind == kindStruct {
+ // for composite objects we have to write every address
+ // because a write might happen to any subobject.
+ racewriterangepc(addr, int(t.size), callerpc, pc)
+ } else {
+ // for non-composite objects we can write just the start
+ // address, as any write must write the first byte.
+ racewritepc(addr, callerpc, pc)
+ }
+}
