1 files changed, 268 insertions, 47 deletions

diff --git a/src/egl/main/egldisplay.c b/src/egl/main/egldisplay.c
index 47a2323eaf..30a49a25ae 100644
--- a/src/egl/main/egldisplay.c
+++ b/src/egl/main/egldisplay.c
@@ -1,4 +1,3 @@
-
 /**
  * Functions related to EGLDisplay.
  */
@@ -7,11 +6,37 @@
 #include <stdlib.h>
 #include <string.h>
 #include "eglcontext.h"
+#include "eglsurface.h"
 #include "egldisplay.h"
 #include "egldriver.h"
 #include "eglglobals.h"
-#include "eglhash.h"
 #include "eglstring.h"
+#include "eglmutex.h"
+#include "egllog.h"
+
+
+/**
+ * Finish display management.
+ */
+void
+_eglFiniDisplay(void)
+{
+   _EGLDisplay *dpyList, *dpy;
+
+   /* atexit function is called with global mutex locked */
+   dpyList = _eglGlobal.DisplayList;
+   while (dpyList) {
+      /* pop list head */
+      dpy = dpyList;
+      dpyList = dpyList->Next;
+
+      if (dpy->ContextList || dpy->SurfaceList)
+         _eglLog(_EGL_DEBUG, "Display %p is destroyed with resources", dpy);
+
+      free(dpy);
+   }
+   _eglGlobal.DisplayList = NULL;
+}
 
 
 /**
@@ -25,17 +50,12 @@ _eglNewDisplay(NativeDisplayType nativeDisplay)
 {
    _EGLDisplay *dpy = (_EGLDisplay *) calloc(1, sizeof(_EGLDisplay));
    if (dpy) {
-      EGLuint key = _eglHashGenKey(_eglGlobal.Displays);
-
-      dpy->Handle = (EGLDisplay) key;
-      _eglHashInsert(_eglGlobal.Displays, key, dpy);
-
       dpy->NativeDisplay = nativeDisplay;
 #if defined(_EGL_PLATFORM_X)
       dpy->Xdpy = (Display *) nativeDisplay;
 #endif
 
-      dpy->DriverName = _eglChooseDriver(dpy);
+      dpy->DriverName = _eglPreloadDriver(dpy);
       if (!dpy->DriverName) {
          free(dpy);
          return NULL;
@@ -46,54 +66,107 @@ _eglNewDisplay(NativeDisplayType nativeDisplay)
 
 
 /**
- * Return the public handle for an internal _EGLDisplay.
- * This is the inverse of _eglLookupDisplay().
+ * Link a display to itself and return the handle of the link.
+ * The handle can be passed to client directly.
  */
 EGLDisplay
-_eglGetDisplayHandle(_EGLDisplay *display)
+_eglLinkDisplay(_EGLDisplay *dpy)
 {
-   if (display)
-      return display->Handle;
-   else
-      return EGL_NO_DISPLAY;
+   _eglLockMutex(_eglGlobal.Mutex);
+
+   dpy->Next = _eglGlobal.DisplayList;
+   _eglGlobal.DisplayList = dpy;
+
+   _eglUnlockMutex(_eglGlobal.Mutex);
+
+   return (EGLDisplay) dpy;
 }
 
- 
+
 /**
- * Return the _EGLDisplay object that corresponds to the given public/
- * opaque display handle.
- * This is the inverse of _eglGetDisplayHandle().
+ * Unlink a linked display from itself.
+ * Accessing an unlinked display should generate EGL_BAD_DISPLAY error.
  */
-_EGLDisplay *
-_eglLookupDisplay(EGLDisplay dpy)
+void
+_eglUnlinkDisplay(_EGLDisplay *dpy)
 {
-   EGLuint key = (EGLuint) dpy;
-   if (!_eglGlobal.Displays)
-      return NULL;
-   return (_EGLDisplay *) _eglHashLookup(_eglGlobal.Displays, key);
+   _EGLDisplay *prev;
+
+   _eglLockMutex(_eglGlobal.Mutex);
+
+   prev = _eglGlobal.DisplayList;
+   if (prev != dpy) {
+      while (prev) {
+         if (prev->Next == dpy)
+            break;
+         prev = prev->Next;
+      }
+      assert(prev);
+      prev->Next = dpy->Next;
+   }
+   else {
+      _eglGlobal.DisplayList = dpy->Next;
+   }
+
+   _eglUnlockMutex(_eglGlobal.Mutex);
 }
 
 
-void
-_eglSaveDisplay(_EGLDisplay *dpy)
+/**
+ * Find the display corresponding to the specified native display id in all
+ * linked displays.
+ */
+_EGLDisplay *
+_eglFindDisplay(NativeDisplayType nativeDisplay)
 {
-   EGLuint key = _eglHashGenKey(_eglGlobal.Displays);
-   assert(dpy);
-   assert(!dpy->Handle);
-   dpy->Handle = (EGLDisplay) key;
-   assert(dpy->Handle);
-   _eglHashInsert(_eglGlobal.Displays, key, dpy);
+   _EGLDisplay *dpy;
+
+   _eglLockMutex(_eglGlobal.Mutex);
+
+   dpy = _eglGlobal.DisplayList;
+   while (dpy) {
+      if (dpy->NativeDisplay == nativeDisplay) {
+         _eglUnlockMutex(_eglGlobal.Mutex);
+         return dpy;
+      }
+      dpy = dpy->Next;
+   }
+
+   _eglUnlockMutex(_eglGlobal.Mutex);
+
+   return NULL;
 }
 
 
-_EGLDisplay *
-_eglGetCurrentDisplay(void)
+/**
+ * Destroy the contexts and surfaces that are linked to the display.
+ */
+void
+_eglReleaseDisplayResources(_EGLDriver *drv, _EGLDisplay *display)
 {
-   _EGLContext *ctx = _eglGetCurrentContext();
-   if (ctx)
-      return ctx->Display;
-   else
-      return NULL;
+   _EGLContext *contexts;
+   _EGLSurface *surfaces;
+
+   contexts = display->ContextList;
+   surfaces = display->SurfaceList;
+
+   while (contexts) {
+      _EGLContext *ctx = contexts;
+      contexts = contexts->Next;
+
+      _eglUnlinkContext(ctx);
+      drv->API.DestroyContext(drv, display, ctx);
+   }
+   assert(!display->ContextList);
+
+   while (surfaces) {
+      _EGLSurface *surf = surfaces;
+      surfaces = surfaces->Next;
+
+      _eglUnlinkSurface(surf);
+      drv->API.DestroySurface(drv, display, surf);
+   }
+   assert(!display->SurfaceList);
 }
 
 
@@ -106,16 +179,164 @@ _eglCleanupDisplay(_EGLDisplay *disp)
 {
    EGLint i;
 
-   for (i = 0; i < disp->NumConfigs; i++) {
-      free(disp->Configs[i]);
+   if (disp->Configs) {
+      for (i = 0; i < disp->NumConfigs; i++)
+         free(disp->Configs[i]);
+      free(disp->Configs);
+      disp->Configs = NULL;
+      disp->NumConfigs = 0;
    }
-   free(disp->Configs);
-   disp->Configs = NULL;
 
    /* XXX incomplete */
+}
 
-   free((void *) disp->DriverName);
-   disp->DriverName = NULL;
 
-   /* driver deletes the _EGLDisplay object */
+/**
+ * Link a context to a display and return the handle of the link.
+ * The handle can be passed to client directly.
+ */
+EGLContext
+_eglLinkContext(_EGLContext *ctx, _EGLDisplay *dpy)
+{
+   ctx->Display = dpy;
+   ctx->Next = dpy->ContextList;
+   dpy->ContextList = ctx;
+   return (EGLContext) ctx;
 }
+
+
+/**
+ * Unlink a linked context from its display.
+ * Accessing an unlinked context should generate EGL_BAD_CONTEXT error.
+ */
+void
+_eglUnlinkContext(_EGLContext *ctx)
+{
+   _EGLContext *prev;
+
+   prev = ctx->Display->ContextList;
+   if (prev != ctx) {
+      while (prev) {
+         if (prev->Next == ctx)
+            break;
+         prev = prev->Next;
+      }
+      assert(prev);
+      prev->Next = ctx->Next;
+   }
+   else {
+      ctx->Display->ContextList = ctx->Next;
+   }
+
+   ctx->Next = NULL;
+   ctx->Display = NULL;
+}
+
+
+/**
+ * Link a surface to a display and return the handle of the link.
+ * The handle can be passed to client directly.
+ */
+EGLSurface
+_eglLinkSurface(_EGLSurface *surf, _EGLDisplay *dpy)
+{
+   surf->Display = dpy;
+   surf->Next = dpy->SurfaceList;
+   dpy->SurfaceList = surf;
+   return (EGLSurface) surf;
+}
+
+
+/**
+ * Unlink a linked surface from its display.
+ * Accessing an unlinked surface should generate EGL_BAD_SURFACE error.
+ */
+void
+_eglUnlinkSurface(_EGLSurface *surf)
+{
+   _EGLSurface *prev;
+
+   prev = surf->Display->SurfaceList;
+   if (prev != surf) {
+      while (prev) {
+         if (prev->Next == surf)
+            break;
+         prev = prev->Next;
+      }
+      assert(prev);
+      prev->Next = surf->Next;
+   }
+   else {
+      prev = NULL;
+      surf->Display->SurfaceList = surf->Next;
+   }
+
+   surf->Next = NULL;
+   surf->Display = NULL;
+}
+
+
+#ifndef _EGL_SKIP_HANDLE_CHECK
+
+
+/**
+ * Return EGL_TRUE if the given handle is a valid handle to a display.
+ */
+EGLBoolean
+_eglCheckDisplayHandle(EGLDisplay dpy)
+{
+   _EGLDisplay *cur;
+
+   _eglLockMutex(_eglGlobal.Mutex);
+   cur = _eglGlobal.DisplayList;
+   while (cur) {
+      if (cur == (_EGLDisplay *) dpy)
+         break;
+      cur = cur->Next;
+   }
+   _eglUnlockMutex(_eglGlobal.Mutex);
+   return (cur != NULL);
+}
+
+
+/**
+ * Return EGL_TRUE if the given handle is a valid handle to a context.
+ */
+EGLBoolean
+_eglCheckContextHandle(EGLContext ctx, _EGLDisplay *dpy)
+{
+   _EGLContext *cur;
+
+   cur = dpy->ContextList;
+   while (cur) {
+      if (cur == (_EGLContext *) ctx) {
+         assert(cur->Display == dpy);
+         break;
+      }
+      cur = cur->Next;
+   }
+   return (cur != NULL);
+}
+
+
+/**
+ * Return EGL_TRUE if the given handle is a valid handle to a surface.
+ */
+EGLBoolean
+_eglCheckSurfaceHandle(EGLSurface surf, _EGLDisplay *dpy)
+{
+   _EGLSurface *cur;
+
+   cur = dpy->SurfaceList;
+   while (cur) {
+      if (cur == (_EGLSurface *) surf) {
+         assert(cur->Display == dpy);
+         break;
+      }
+      cur = cur->Next;
+   }
+   return (cur != NULL);
+}
+
+
+#endif /* !_EGL_SKIP_HANDLE_CHECK */