From 7ba2784b0a4bbed36a75488d4b73a314aafaedf1 Mon Sep 17 00:00:00 2001
From: Rob Clark <robdclark@chromium.org>
Date: Thu, 18 Aug 2022 10:59:50 -0700
Subject: [PATCH] egl: Make RefCount atomic

Once we relax the locking, we will be doing _eglPutFoo() outside of the
big display lock.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18050>
---
 src/egl/main/egldisplay.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/egl/main/egldisplay.c b/src/egl/main/egldisplay.c
index db90b2b2dc7..ddbcbf0061d 100644
--- a/src/egl/main/egldisplay.c
+++ b/src/egl/main/egldisplay.c
@@ -442,8 +442,7 @@ void
 _eglGetResource(_EGLResource *res)
 {
    assert(res && res->RefCount > 0);
-   /* hopefully a resource is always manipulated with its display locked */
-   res->RefCount++;
+   p_atomic_inc(&res->RefCount);
 }
 
 
@@ -454,8 +453,7 @@ EGLBoolean
 _eglPutResource(_EGLResource *res)
 {
    assert(res && res->RefCount > 0);
-   res->RefCount--;
-   return (!res->RefCount);
+   return p_atomic_dec_zero(&res->RefCount);
 }