1 files changed, 333 insertions, 33 deletions

diff --git a/src/egl/main/egldisplay.c b/src/egl/main/egldisplay.c
index 074a85bf26..896d60dbe1 100644
--- a/src/egl/main/egldisplay.c
+++ b/src/egl/main/egldisplay.c
@@ -1,71 +1,371 @@
+/**
+ * Functions related to EGLDisplay.
+ */
+
+#include <assert.h>
 #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;
+}
 
 
-static char *
-my_strdup(const char *s)
+/**
+ * If the first character is '!' we interpret it as specific driver name
+ * (i.e. "!r200" or "!i830").  Whatever follows ':' is interpreted as
+ * arguments.
+ *
+ * The caller may free() the returned driver name.
+ */
+char *
+_eglSplitDisplayString(const char *dpyString, const char **args)
 {
-   int l = strlen(s);
-   char *s2 = malloc(l + 1);
-   strcpy(s2, s);
-   return s2;
+   char *drv, *p;
+
+   if (!dpyString || dpyString[0] != '!')
+      return NULL;
+   drv = _eglstrdup(dpyString + 1);
+   if (!drv)
+      return NULL;
+
+   p = strchr(dpyString, ':');
+   if (p) {
+      drv[p - dpyString] = '\0';
+      p++;
+   }
+   if (args)
+      *args = p;
+
+   return drv;
 }
 
 
 /**
- * We're assuming that the NativeDisplayType parameter is actually
- * a string.
- * Return a new _EGLDisplay object for the given displayName
+ * Allocate a new _EGLDisplay object for the given nativeDisplay handle.
+ * We'll also try to determine the device driver name at this time.
+ *
+ * Note that nativeDisplay may be an X Display ptr, or a string.
  */
 _EGLDisplay *
-_eglNewDisplay(NativeDisplayType displayName)
+_eglNewDisplay(NativeDisplayType nativeDisplay)
 {
    _EGLDisplay *dpy = (_EGLDisplay *) calloc(1, sizeof(_EGLDisplay));
    if (dpy) {
-      dpy->Handle = _eglHashGenKey(_eglGlobal.Displays);
-      _eglHashInsert(_eglGlobal.Displays, dpy->Handle, dpy);
-      if (displayName)
-         dpy->Name = my_strdup(displayName);
-      else
-         dpy->Name = NULL;
-      dpy->Driver = NULL;  /* this gets set later */
+      dpy->NativeDisplay = nativeDisplay;
+
+      dpy->DriverName = _eglPreloadDriver(dpy);
+      if (!dpy->DriverName) {
+         free(dpy);
+         return NULL;
+      }
    }
    return dpy;
 }
 
 
 /**
- * Return the _EGLDisplay object that corresponds to the given public/
- * opaque display handle.
+ * Link a display to itself and return the handle of the link.
+ * The handle can be passed to client directly.
  */
-_EGLDisplay *
-_eglLookupDisplay(EGLDisplay dpy)
+EGLDisplay
+_eglLinkDisplay(_EGLDisplay *dpy)
+{
+   _eglLockMutex(_eglGlobal.Mutex);
+
+   dpy->Next = _eglGlobal.DisplayList;
+   _eglGlobal.DisplayList = dpy;
+
+   _eglUnlockMutex(_eglGlobal.Mutex);
+
+   return (EGLDisplay) dpy;
+}
+
+
+/**
+ * Unlink a linked display from itself.
+ * Accessing an unlinked display should generate EGL_BAD_DISPLAY error.
+ */
+void
+_eglUnlinkDisplay(_EGLDisplay *dpy)
 {
-   _EGLDisplay *d = (_EGLDisplay *) _eglHashLookup(_eglGlobal.Displays, dpy);
-   return d;
+   _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);
 }
 
 
+/**
+ * Find the display corresponding to the specified native display id in all
+ * linked displays.
+ */
 _EGLDisplay *
-_eglGetCurrentDisplay(void)
+_eglFindDisplay(NativeDisplayType nativeDisplay)
 {
-   _EGLContext *ctx = _eglGetCurrentContext();
-   if (ctx)
-      return ctx->Display;
-   else
-      return NULL;
+   _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;
+}
+
+
+/**
+ * Destroy the contexts and surfaces that are linked to the display.
+ */
+void
+_eglReleaseDisplayResources(_EGLDriver *drv, _EGLDisplay *display)
+{
+   _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);
 }
 
 
+/**
+ * Free all the data hanging of an _EGLDisplay object, but not
+ * the object itself.
+ */
 void
 _eglCleanupDisplay(_EGLDisplay *disp)
 {
+   EGLint i;
+
+   if (disp->Configs) {
+      for (i = 0; i < disp->NumConfigs; i++)
+         free(disp->Configs[i]);
+      free(disp->Configs);
+      disp->Configs = NULL;
+      disp->NumConfigs = 0;
+   }
+
    /* XXX incomplete */
-   free(disp->Configs);
-   free(disp->Name);
-   /* driver deletes _EGLDisplay */
 }
+
+
+/**
+ * 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 = NULL;
+
+   if (dpy)
+      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 = NULL;
+
+   if (dpy)
+      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 */