runtime: use gList in netpoll

netpoll is perhaps one of the most confusing uses of G lists currently
since it passes around many lists as bare *g values right now.
Switching to gList makes it much clearer what's an individual g and
what's a list.

Change-Id: I8d8993c4967c5bae049c7a094aad3a657928ba6c
Reviewed-on: https://go-review.googlesource.com/129397
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rick Hudson <rlh@golang.org>

1 files changed, 6 insertions, 6 deletions

diff --git a/src/runtime/netpoll_solaris.go b/src/runtime/netpoll_solaris.go
index 853e5f63e3..6bd484afaa 100644
--- a/src/runtime/netpoll_solaris.go
+++ b/src/runtime/netpoll_solaris.go
@@ -180,9 +180,9 @@ func netpollarm(pd *pollDesc, mode int) {
 
 // polls for ready network connections
 // returns list of goroutines that become runnable
-func netpoll(block bool) *g {
+func netpoll(block bool) gList {
 	if portfd == -1 {
-		return nil
+		return gList{}
 	}
 
 	var wait *timespec
@@ -202,7 +202,7 @@ retry:
 		goto retry
 	}
 
-	var gp guintptr
+	var toRun gList
 	for i := 0; i < int(n); i++ {
 		ev := &events[i]
 
@@ -233,12 +233,12 @@ retry:
 		}
 
 		if mode != 0 {
-			netpollready(&gp, pd, mode)
+			netpollready(&toRun, pd, mode)
 		}
 	}
 
-	if block && gp == 0 {
+	if block && toRun.empty() {
 		goto retry
 	}
-	return gp.ptr()
+	return toRun
 }