From 4afe24808ee253c44c65b855f65bd0749c1e1524 Mon Sep 17 00:00:00 2001
From: Chia-I Wu <olv@lunarg.com>
Date: Wed, 17 Feb 2010 19:03:30 +0800
Subject: egl: Revisit global data locking.

Lock the global mutex in _eglPreloadDrivers and _eglAllocScreenHandle.
Add comments to why certain pathes do not need locking.
---
 src/egl/main/eglscreen.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

(limited to 'src/egl/main/eglscreen.c')

diff --git a/src/egl/main/eglscreen.c b/src/egl/main/eglscreen.c
index 97a405a4b4..c47afd6abd 100644
--- a/src/egl/main/eglscreen.c
+++ b/src/egl/main/eglscreen.c
@@ -22,17 +22,22 @@
 #include "eglconfig.h"
 #include "eglsurface.h"
 #include "eglscreen.h"
+#include "eglmutex.h"
 
 
 /**
  * Return a new screen handle/ID.
  * NOTE: we never reuse these!
  */
-EGLScreenMESA
+static EGLScreenMESA
 _eglAllocScreenHandle(void)
 {
-   EGLScreenMESA s = _eglGlobal.FreeScreenHandle;
-   _eglGlobal.FreeScreenHandle++;
+   EGLScreenMESA s;
+   
+   _eglLockMutex(_eglGlobal.Mutex);
+   s = _eglGlobal.FreeScreenHandle++;
+   _eglUnlockMutex(_eglGlobal.Mutex);
+
    return s;
 }
 
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