runtime: replace the type of netpollWakeSig from a uintptr to a uint32

There's no need for netpollWakeSig to use a uintptr type, a uint32 is enough.

Relevant CL: CL 212737

Change-Id: Ide24478b217a02bad62f7e000a9680c26a8c5366
Reviewed-on: https://go-review.googlesource.com/c/go/+/227798
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

5 files changed, 15 insertions, 15 deletions

diff --git a/src/runtime/netpoll_aix.go b/src/runtime/netpoll_aix.go
index 3c1f70874d..4590ed81a6 100644
--- a/src/runtime/netpoll_aix.go
+++ b/src/runtime/netpoll_aix.go
@@ -45,7 +45,7 @@ var (
 	wrwake         int32
 	pendingUpdates int32
 
-	netpollWakeSig uintptr // used to avoid duplicate calls of netpollBreak
+	netpollWakeSig uint32 // used to avoid duplicate calls of netpollBreak
 )
 
 func netpollinit() {
@@ -135,7 +135,7 @@ func netpollarm(pd *pollDesc, mode int) {
 
 // netpollBreak interrupts a poll.
 func netpollBreak() {
-	if atomic.Casuintptr(&netpollWakeSig, 0, 1) {
+	if atomic.Cas(&netpollWakeSig, 0, 1) {
 		b := [1]byte{0}
 		write(uintptr(wrwake), unsafe.Pointer(&b[0]), 1)
 	}
@@ -192,7 +192,7 @@ retry:
 			var b [1]byte
 			for read(rdwake, unsafe.Pointer(&b[0]), 1) == 1 {
 			}
-			atomic.Storeuintptr(&netpollWakeSig, 0)
+			atomic.Store(&netpollWakeSig, 0)
 		}
 		// Still look at the other fds even if the mode may have
 		// changed, as netpollBreak might have been called.
diff --git a/src/runtime/netpoll_epoll.go b/src/runtime/netpoll_epoll.go
index cc4c36f796..58f4fa8754 100644
--- a/src/runtime/netpoll_epoll.go
+++ b/src/runtime/netpoll_epoll.go
@@ -26,7 +26,7 @@ var (
 
 	netpollBreakRd, netpollBreakWr uintptr // for netpollBreak
 
-	netpollWakeSig uintptr // used to avoid duplicate calls of netpollBreak
+	netpollWakeSig uint32 // used to avoid duplicate calls of netpollBreak
 )
 
 func netpollinit() {
@@ -79,7 +79,7 @@ func netpollarm(pd *pollDesc, mode int) {
 
 // netpollBreak interrupts an epollwait.
 func netpollBreak() {
-	if atomic.Casuintptr(&netpollWakeSig, 0, 1) {
+	if atomic.Cas(&netpollWakeSig, 0, 1) {
 		for {
 			var b byte
 			n := write(netpollBreakWr, unsafe.Pointer(&b), 1)
@@ -154,7 +154,7 @@ retry:
 				// if blocking.
 				var tmp [16]byte
 				read(int32(netpollBreakRd), noescape(unsafe.Pointer(&tmp[0])), int32(len(tmp)))
-				atomic.Storeuintptr(&netpollWakeSig, 0)
+				atomic.Store(&netpollWakeSig, 0)
 			}
 			continue
 		}
diff --git a/src/runtime/netpoll_kqueue.go b/src/runtime/netpoll_kqueue.go
index 2ff21d8fcb..3bd93c1f20 100644
--- a/src/runtime/netpoll_kqueue.go
+++ b/src/runtime/netpoll_kqueue.go
@@ -18,7 +18,7 @@ var (
 
 	netpollBreakRd, netpollBreakWr uintptr // for netpollBreak
 
-	netpollWakeSig uintptr // used to avoid duplicate calls of netpollBreak
+	netpollWakeSig uint32 // used to avoid duplicate calls of netpollBreak
 )
 
 func netpollinit() {
@@ -83,7 +83,7 @@ func netpollarm(pd *pollDesc, mode int) {
 
 // netpollBreak interrupts a kevent.
 func netpollBreak() {
-	if atomic.Casuintptr(&netpollWakeSig, 0, 1) {
+	if atomic.Cas(&netpollWakeSig, 0, 1) {
 		for {
 			var b byte
 			n := write(netpollBreakWr, unsafe.Pointer(&b), 1)
@@ -152,7 +152,7 @@ retry:
 				// if blocking.
 				var tmp [16]byte
 				read(int32(netpollBreakRd), noescape(unsafe.Pointer(&tmp[0])), int32(len(tmp)))
-				atomic.Storeuintptr(&netpollWakeSig, 0)
+				atomic.Store(&netpollWakeSig, 0)
 			}
 			continue
 		}
diff --git a/src/runtime/netpoll_solaris.go b/src/runtime/netpoll_solaris.go
index 34b3ee9308..d217d5b160 100644
--- a/src/runtime/netpoll_solaris.go
+++ b/src/runtime/netpoll_solaris.go
@@ -88,7 +88,7 @@ var (
 	libc_port_dissociate,
 	libc_port_getn,
 	libc_port_alert libcFunc
-	netpollWakeSig uintptr // used to avoid duplicate calls of netpollBreak
+	netpollWakeSig uint32 // used to avoid duplicate calls of netpollBreak
 )
 
 func errno() int32 {
@@ -191,7 +191,7 @@ func netpollarm(pd *pollDesc, mode int) {
 
 // netpollBreak interrupts a port_getn wait.
 func netpollBreak() {
-	if atomic.Casuintptr(&netpollWakeSig, 0, 1) {
+	if atomic.Cas(&netpollWakeSig, 0, 1) {
 		// Use port_alert to put portfd into alert mode.
 		// This will wake up all threads sleeping in port_getn on portfd,
 		// and cause their calls to port_getn to return immediately.
@@ -274,7 +274,7 @@ retry:
 					println("runtime: port_alert failed with", e)
 					throw("runtime: netpoll: port_alert failed")
 				}
-				atomic.Storeuintptr(&netpollWakeSig, 0)
+				atomic.Store(&netpollWakeSig, 0)
 			}
 			continue
 		}
diff --git a/src/runtime/netpoll_windows.go b/src/runtime/netpoll_windows.go
index 56a0798559..4c1cd2633a 100644
--- a/src/runtime/netpoll_windows.go
+++ b/src/runtime/netpoll_windows.go
@@ -35,7 +35,7 @@ type overlappedEntry struct {
 var (
 	iocphandle uintptr = _INVALID_HANDLE_VALUE // completion port io handle
 
-	netpollWakeSig uintptr // used to avoid duplicate calls of netpollBreak
+	netpollWakeSig uint32 // used to avoid duplicate calls of netpollBreak
 )
 
 func netpollinit() {
@@ -67,7 +67,7 @@ func netpollarm(pd *pollDesc, mode int) {
 }
 
 func netpollBreak() {
-	if atomic.Casuintptr(&netpollWakeSig, 0, 1) {
+	if atomic.Cas(&netpollWakeSig, 0, 1) {
 		if stdcall4(_PostQueuedCompletionStatus, iocphandle, 0, 0, 0) == 0 {
 			println("runtime: netpoll: PostQueuedCompletionStatus failed (errno=", getlasterror(), ")")
 			throw("runtime: netpoll: PostQueuedCompletionStatus failed")
@@ -133,7 +133,7 @@ func netpoll(delay int64) gList {
 			}
 			handlecompletion(&toRun, op, errno, qty)
 		} else {
-			atomic.Storeuintptr(&netpollWakeSig, 0)
+			atomic.Store(&netpollWakeSig, 0)
 			if delay == 0 {
 				// Forward the notification to the
 				// blocked poller.