runtime: more changes in preparation to the new scheduler
add per-P cache of dead G's
add global runnable queue (not used for now)
add list of idle P's (not used for now)
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/7397061
diff --git a/src/pkg/runtime/runtime.h b/src/pkg/runtime/runtime.h
index 6d7a315..11f4557 100644
--- a/src/pkg/runtime/runtime.h
+++ b/src/pkg/runtime/runtime.h
@@ -317,11 +317,19 @@
{
Lock;
+ P* link;
+
// Queue of runnable goroutines.
G** runq;
int32 runqhead;
int32 runqtail;
int32 runqsize;
+
+ // Available G's (status == Gdead)
+ G* gfree;
+ int32 gfreecnt;
+
+ byte pad[64];
};
// The m->locked word holds a single bit saying whether
