runtime: eliminate excessive notewakeup calls in timers

If the timer goroutine is wakeup by timeout,
other goroutines will still notewakeup because sleeping is still set.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/12763043

diff --git a/src/pkg/runtime/time.goc b/src/pkg/runtime/time.goc
index 4f20300ff11225fd2fe938a18dc86499e25540ae..6670b45ba99bcc3cc2289f217d14682652752c8a 100644 (file)
--- a/src/pkg/runtime/time.goc
+++ b/src/pkg/runtime/time.goc
@@ -175,6 +175,7 @@ timerproc(void)
 
        for(;;) {
                runtime·lock(&timers);
+               timers.sleeping = false;
                now = runtime·nanotime();
                for(;;) {
                        if(timers.len == 0) {