egl: Use the link functions to manage resources.

This commit uses the newly introduced link functions to manage EGL
contexts and surfaces.  As a result of this, the API for drivers are
changed.  All drivers are updated for the change.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>

6 files changed, 57 insertions, 97 deletions

diff --git a/src/egl/main/eglcontext.c b/src/egl/main/eglcontext.c
index edcc6a986f..01cb116d00 100644
--- a/src/egl/main/eglcontext.c
+++ b/src/egl/main/eglcontext.c
@@ -14,11 +14,9 @@
  * in the attrib_list.
  */
 EGLBoolean
-_eglInitContext(_EGLDriver *drv, EGLDisplay dpy, _EGLContext *ctx,
-                EGLConfig config, const EGLint *attrib_list)
+_eglInitContext(_EGLDriver *drv, _EGLContext *ctx,
+                _EGLConfig *conf, const EGLint *attrib_list)
 {
-   _EGLConfig *conf;
-   _EGLDisplay *display = _eglLookupDisplay(dpy);
    EGLint i;
    const EGLenum api = eglQueryAPI();
 
@@ -27,7 +25,6 @@ _eglInitContext(_EGLDriver *drv, EGLDisplay dpy, _EGLContext *ctx,
       return EGL_FALSE;
    }
 
-   conf = _eglLookupConfig(drv, dpy, config);
    if (!conf) {
       _eglError(EGL_BAD_CONFIG, "_eglInitContext");
       return EGL_FALSE;
@@ -49,7 +46,6 @@ _eglInitContext(_EGLDriver *drv, EGLDisplay dpy, _EGLContext *ctx,
       }
    }
 
-   ctx->Display = display;
    ctx->Config = conf;
    ctx->DrawSurface = EGL_NO_SURFACE;
    ctx->ReadSurface = EGL_NO_SURFACE;
@@ -60,30 +56,6 @@ _eglInitContext(_EGLDriver *drv, EGLDisplay dpy, _EGLContext *ctx,
 
 
 /**
- * Save a new _EGLContext into the hash table.
- */
-void
-_eglSaveContext(_EGLContext *ctx)
-{
-   /* no-op.
-    * Public EGLContext handle and private _EGLContext are the same.
-    */
-}
-
-
-/**
- * Remove the given _EGLContext object from the hash table.
- */
-void
-_eglRemoveContext(_EGLContext *ctx)
-{
-   /* no-op.
-    * Public EGLContext handle and private _EGLContext are the same.
-    */
-}
-
-
-/**
  * Just a placeholder/demo function.  Real driver will never use this!
  */
 EGLContext
@@ -92,18 +64,24 @@ _eglCreateContext(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
 {
 #if 0 /* example code */
    _EGLContext *context;
+   _EGLConfig *conf;
+
+   conf = _eglLookupConfig(drv, dpy, config);
+   if (!conf) {
+      _eglError(EGL_BAD_CONFIG, "eglCreateContext");
+      return EGL_NO_CONTEXT;
+   }
 
    context = (_EGLContext *) calloc(1, sizeof(_EGLContext));
    if (!context)
       return EGL_NO_CONTEXT;
 
-   if (!_eglInitContext(drv, dpy, context, config, attrib_list)) {
+   if (!_eglInitContext(drv, context, conf, attrib_list)) {
       free(context);
       return EGL_NO_CONTEXT;
    }
 
-   _eglSaveContext(context);
-   return (EGLContext) context;
+   return _eglLinkContext(context, _eglLookupDisplay(dpy));
 #endif
    return EGL_NO_CONTEXT;
 }
@@ -117,6 +95,7 @@ _eglDestroyContext(_EGLDriver *drv, EGLDisplay dpy, EGLContext ctx)
 {
    _EGLContext *context = _eglLookupContext(ctx);
    if (context) {
+      _eglUnlinkContext(context);
       if (context->IsBound) {
          context->DeletePending = EGL_TRUE;
       }
diff --git a/src/egl/main/eglcontext.h b/src/egl/main/eglcontext.h
index 6e418dfbbe..8e20643177 100644
--- a/src/egl/main/eglcontext.h
+++ b/src/egl/main/eglcontext.h
@@ -29,16 +29,8 @@ struct _egl_context
 
 
 extern EGLBoolean
-_eglInitContext(_EGLDriver *drv, EGLDisplay dpy, _EGLContext *ctx,
-                EGLConfig config, const EGLint *attrib_list);
-
-
-extern void
-_eglSaveContext(_EGLContext *ctx);
-
-
-extern void
-_eglRemoveContext(_EGLContext *ctx);
+_eglInitContext(_EGLDriver *drv, _EGLContext *ctx,
+                _EGLConfig *config, const EGLint *attrib_list);
 
 
 extern EGLContext
diff --git a/src/egl/main/eglglobals.h b/src/egl/main/eglglobals.h
index fbb55c23f0..a9443cfbdd 100644
--- a/src/egl/main/eglglobals.h
+++ b/src/egl/main/eglglobals.h
@@ -13,6 +13,7 @@ struct _egl_global
 {
    EGLBoolean Initialized;
 
+   /* these are private to egldisplay.c */
    _EGLHashtable *Displays;
    _EGLHashtable *Surfaces;
 
diff --git a/src/egl/main/eglscreen.c b/src/egl/main/eglscreen.c
index 9c9a8377bf..b6bde65e8b 100644
--- a/src/egl/main/eglscreen.c
+++ b/src/egl/main/eglscreen.c
@@ -128,20 +128,25 @@ _eglCreateScreenSurfaceMESA(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
 {
 #if 0 /* THIS IS JUST EXAMPLE CODE */
    _EGLSurface *surf;
+   _EGLConfig *conf;
+
+   conf = _eglLookupConfig(drv, dpy, config);
+   if (!conf) {
+      _eglError(EGL_BAD_CONFIG, "eglCreateScreenSurfaceMESA");
+      return EGL_NO_SURFACE;
+   }
 
    surf = (_EGLSurface *) calloc(1, sizeof(_EGLSurface));
    if (!surf)
       return EGL_NO_SURFACE;
 
-   if (!_eglInitSurface(drv, dpy, surf, EGL_SCREEN_BIT_MESA,
-                        config, attrib_list)) {
+   if (!_eglInitSurface(drv, surf, EGL_SCREEN_BIT_MESA,
+                        conf, attrib_list)) {
       free(surf);
       return EGL_NO_SURFACE;
    }
 
-   _eglSaveSurface(surf);
-
-   return surf->Handle;
+   return _eglLinkSurface(surf, _eglLookupDisplay(dpy));
 #endif
    return EGL_NO_SURFACE;
 }
diff --git a/src/egl/main/eglsurface.c b/src/egl/main/eglsurface.c
index 854f499fce..b122124585 100644
--- a/src/egl/main/eglsurface.c
+++ b/src/egl/main/eglsurface.c
@@ -21,12 +21,10 @@
  * \return EGL_TRUE if no errors, EGL_FALSE otherwise.
  */
 EGLBoolean
-_eglInitSurface(_EGLDriver *drv, EGLDisplay dpy,
-                _EGLSurface *surf, EGLint type, EGLConfig config,
-                const EGLint *attrib_list)
+_eglInitSurface(_EGLDriver *drv, _EGLSurface *surf, EGLint type,
+                _EGLConfig *conf, const EGLint *attrib_list)
 {
    const char *func;
-   _EGLConfig *conf;
    EGLint width = 0, height = 0, largest = 0;
    EGLint texFormat = 0, texTarget = 0, mipmapTex = 0;
    EGLint renderBuffer = EGL_BACK_BUFFER;
@@ -56,7 +54,6 @@ _eglInitSurface(_EGLDriver *drv, EGLDisplay dpy,
       return EGL_FALSE;
    }
 
-   conf = _eglLookupConfig(drv, dpy, config);
    if (!conf) {
       _eglError(EGL_BAD_CONFIG, func);
       return EGL_FALSE;
@@ -212,26 +209,6 @@ _eglInitSurface(_EGLDriver *drv, EGLDisplay dpy,
 }
 
 
-void
-_eglSaveSurface(_EGLSurface *surf)
-{
-   EGLuint key = _eglHashGenKey(_eglGlobal.Surfaces);
-   assert(surf);
-   assert(!surf->Handle);
-   surf->Handle = (EGLSurface) key;
-   assert(surf->Handle);
-   _eglHashInsert(_eglGlobal.Surfaces, key, surf);
-}
-
-
-void
-_eglRemoveSurface(_EGLSurface *surf)
-{
-   _eglHashRemove(_eglGlobal.Surfaces, (EGLuint) surf->Handle);
-}
-
-
-
 EGLBoolean
 _eglSwapBuffers(_EGLDriver *drv, EGLDisplay dpy, EGLSurface draw)
 {
@@ -340,19 +317,24 @@ _eglCreateWindowSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
 {
 #if 0 /* THIS IS JUST EXAMPLE CODE */
    _EGLSurface *surf;
+   _EGLConfig *conf;
+
+   conf = _eglLookupConfig(drv, dpy, config);
+   if (!conf) {
+      _eglError(EGL_BAD_CONFIG, "eglCreateWindowSurface");
+      return EGL_NO_SURFACE;
+   }
 
    surf = (_EGLSurface *) calloc(1, sizeof(_EGLSurface));
    if (!surf)
       return EGL_NO_SURFACE;
 
-   if (!_eglInitSurface(drv, dpy, surf, EGL_WINDOW_BIT, config, attrib_list)) {
+   if (!_eglInitSurface(drv, surf, EGL_WINDOW_BIT, conf, attrib_list)) {
       free(surf);
       return EGL_NO_SURFACE;
    }
 
-   _eglSaveSurface(surf);
-
-   return surf->Handle;
+   return _eglLinkSurface(surf, _eglLookupDisplay(dpy));
 #endif
    return EGL_NO_SURFACE;
 }
@@ -367,19 +349,24 @@ _eglCreatePixmapSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
 {
 #if 0 /* THIS IS JUST EXAMPLE CODE */
    _EGLSurface *surf;
+   _EGLConfig *conf;
+
+   conf = _eglLookupConfig(drv, dpy, config);
+   if (!conf) {
+      _eglError(EGL_BAD_CONFIG, "eglCreatePixmapSurface");
+      return EGL_NO_SURFACE;
+   }
 
    surf = (_EGLSurface *) calloc(1, sizeof(_EGLSurface));
    if (!surf)
       return EGL_NO_SURFACE;
 
-   if (!_eglInitSurface(drv, dpy, surf, EGL_PIXMAP_BIT, config, attrib_list)) {
+   if (!_eglInitSurface(drv, surf, EGL_PIXMAP_BIT, conf, attrib_list)) {
       free(surf);
       return EGL_NO_SURFACE;
    }
 
-   _eglSaveSurface(surf);
-
-   return surf->Handle;
+   return _eglLinkSurface(surf, _eglLookupDisplay(dpy));
 #endif
    return EGL_NO_SURFACE;
 }
@@ -394,19 +381,24 @@ _eglCreatePbufferSurface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
 {
 #if 0 /* THIS IS JUST EXAMPLE CODE */
    _EGLSurface *surf;
+   _EGLConfig *conf;
+
+   conf = _eglLookupConfig(drv, dpy, config);
+   if (!conf) {
+      _eglError(EGL_BAD_CONFIG, "eglCreatePbufferSurface");
+      return EGL_NO_SURFACE;
+   }
 
    surf = (_EGLSurface *) calloc(1, sizeof(_EGLSurface));
    if (!surf)
       return EGL_NO_SURFACE;
 
-   if (!_eglInitSurface(drv, dpy, surf, EGL_PBUFFER_BIT, config, attrib_list)) {
+   if (!_eglInitSurface(drv, surf, EGL_PBUFFER_BIT, conf, attrib_list)) {
       free(surf);
       return EGL_NO_SURFACE;
    }
 
-   _eglSaveSurface(surf);
-
-   return surf->Handle;
+   return _eglLinkSurface(surf, _eglLookupDisplay(dpy));
 #endif
    return EGL_NO_SURFACE;
 }
@@ -420,7 +412,7 @@ _eglDestroySurface(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface)
 {
    _EGLSurface *surf = _eglLookupSurface(surface);
    if (surf) {
-      _eglHashRemove(_eglGlobal.Surfaces, (EGLuint) surface);
+      _eglUnlinkSurface(surf);
       if (surf->IsBound) {
          surf->DeletePending = EGL_TRUE;
       }
diff --git a/src/egl/main/eglsurface.h b/src/egl/main/eglsurface.h
index dc53669091..f6874e6278 100644
--- a/src/egl/main/eglsurface.h
+++ b/src/egl/main/eglsurface.h
@@ -43,17 +43,8 @@ struct _egl_surface
 
 
 extern EGLBoolean
-_eglInitSurface(_EGLDriver *drv, EGLDisplay dpy,
-                _EGLSurface *surf, EGLint type, EGLConfig config,
-                const EGLint *attrib_list);
-
-
-extern void
-_eglSaveSurface(_EGLSurface *surf);
-
-
-extern void
-_eglRemoveSurface(_EGLSurface *surf);
+_eglInitSurface(_EGLDriver *drv, _EGLSurface *surf, EGLint type,
+                _EGLConfig *config, const EGLint *attrib_list);
 
 
 extern EGLBoolean