From 56a17a7f79c480efb6d029359eb421d75f24c966 Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Sat, 5 Aug 2017 20:19:08 +0900
Subject: [PATCH] loop: Reduce defer for performance and readability

---
 internal/loop/run.go | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/internal/loop/run.go b/internal/loop/run.go
index 2adcc479f..fcc5f928e 100644
--- a/internal/loop/run.go
+++ b/internal/loop/run.go
@@ -47,26 +47,28 @@ var (
 
 func (c *runContext) startRunning() {
 	c.m.Lock()
-	defer c.m.Unlock()
 	c.running = true
+	c.m.Unlock()
 }
 
 func (c *runContext) isRunning() bool {
 	c.m.RLock()
-	defer c.m.RUnlock()
-	return c.running
+	v := c.running
+	c.m.RUnlock()
+	return v
 }
 
 func (c *runContext) endRunning() {
 	c.m.Lock()
-	defer c.m.Unlock()
 	c.running = false
+	c.m.Unlock()
 }
 
 func (c *runContext) getCurrentFPS() float64 {
 	c.m.RLock()
-	defer c.m.RUnlock()
-	if !c.running {
+	v := c.running
+	c.m.RUnlock()
+	if !v {
 		// TODO: Should panic here?
 		return 0
 	}
@@ -75,8 +77,8 @@ func (c *runContext) getCurrentFPS() float64 {
 
 func (c *runContext) updateFPS(fps float64) {
 	c.m.Lock()
-	defer c.m.Unlock()
 	c.currentFPS = fps
+	c.m.Unlock()
 }
 
 type GraphicsContext interface {