egl: Use reference counting to replace IsLinked or IsBound.

Remove all _egl<Res>IsLinked and _egl<Res>IsBound.  Update
_eglBindContext and drivers to do reference counting.

1 files changed, 3 insertions, 28 deletions

diff --git a/src/egl/main/eglcontext.h b/src/egl/main/eglcontext.h
index 9c1e2184c6..8cd0df1731 100644
--- a/src/egl/main/eglcontext.h
+++ b/src/egl/main/eglcontext.h
@@ -39,7 +39,9 @@ _eglQueryContext(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx, EGLint att
 
 
 PUBLIC EGLBoolean
-_eglBindContext(_EGLContext **ctx, _EGLSurface **draw, _EGLSurface **read);
+_eglBindContext(_EGLContext *ctx, _EGLSurface *draw, _EGLSurface *read,
+                _EGLContext **old_ctx,
+                _EGLSurface **old_draw, _EGLSurface **old_read);
 
 
 /**
@@ -65,19 +67,6 @@ _eglPutContext(_EGLContext *ctx)
 
 
 /**
- * Return true if the context is bound to a thread.
- *
- * The binding is considered a reference to the context.  Drivers should not
- * destroy a context when it is bound.
- */
-static INLINE EGLBoolean
-_eglIsContextBound(_EGLContext *ctx)
-{
-   return (ctx->Binding != NULL);
-}
-
-
-/**
  * Link a context to its display and return the handle of the link.
  * The handle can be passed to client directly.
  */
@@ -126,18 +115,4 @@ _eglGetContextHandle(_EGLContext *ctx)
 }
 
 
-/**
- * Return true if the context is linked to a display.
- *
- * The link is considered a reference to the context (the display is owning the
- * context).  Drivers should not destroy a context when it is linked.
- */
-static INLINE EGLBoolean
-_eglIsContextLinked(_EGLContext *ctx)
-{
-   _EGLResource *res = (_EGLResource *) ctx;
-   return (res && _eglIsResourceLinked(res));
-}
-
-
 #endif /* EGLCONTEXT_INCLUDED */