Merge branch 'master' into gallium-sampler-view

Conflicts:
	src/gallium/auxiliary/Makefile
	src/gallium/auxiliary/SConscript
	src/gallium/auxiliary/tgsi/tgsi_exec.c
	src/gallium/auxiliary/util/u_blitter.c
	src/gallium/drivers/i915/i915_context.h
	src/gallium/drivers/i965/brw_context.h
	src/gallium/drivers/llvmpipe/lp_context.h
	src/gallium/drivers/nv50/nv50_context.h
	src/gallium/drivers/nv50/nv50_state_validate.c
	src/gallium/drivers/nv50/nv50_tex.c
	src/gallium/drivers/r300/r300_blit.c
	src/gallium/drivers/r300/r300_context.h
	src/gallium/drivers/r300/r300_emit.c
	src/gallium/drivers/r300/r300_state.c
	src/gallium/drivers/softpipe/sp_context.h
	src/gallium/drivers/svga/svga_context.h
	src/gallium/drivers/svga/svga_pipe_sampler.c

1 files changed, 453 insertions, 67 deletions

diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c
index dabb1386ca4..71d1514fe49 100644
--- a/src/mesa/main/bufferobj.c
+++ b/src/mesa/main/bufferobj.c
@@ -37,6 +37,8 @@
 #include "image.h"
 #include "context.h"
 #include "bufferobj.h"
+#include "fbobject.h"
+#include "texobj.h"
 
 
 /* Debug flags */
@@ -208,14 +210,14 @@ _mesa_delete_buffer_object( GLcontext *ctx, struct gl_buffer_object *bufObj )
    (void) ctx;
 
    if (bufObj->Data)
-      _mesa_free(bufObj->Data);
+      free(bufObj->Data);
 
    /* assign strange values here to help w/ debugging */
    bufObj->RefCount = -1000;
    bufObj->Name = ~0;
 
    _glthread_DESTROY_MUTEX(bufObj->Mutex);
-   _mesa_free(bufObj);
+   free(bufObj);
 }
 
 
@@ -295,7 +297,7 @@ _mesa_initialize_buffer_object( struct gl_buffer_object *obj,
 {
    (void) target;
 
-   _mesa_bzero(obj, sizeof(struct gl_buffer_object));
+   memset(obj, 0, sizeof(struct gl_buffer_object));
    _glthread_INIT_MUTEX(obj->Mutex);
    obj->RefCount = 1;
    obj->Name = name;
@@ -339,7 +341,7 @@ _mesa_buffer_data( GLcontext *ctx, GLenum target, GLsizeiptrARB size,
       bufObj->Usage = usage;
 
       if (data) {
-	 _mesa_memcpy( bufObj->Data, data, size );
+	 memcpy( bufObj->Data, data, size );
       }
 
       return GL_TRUE;
@@ -378,7 +380,7 @@ _mesa_buffer_subdata( GLcontext *ctx, GLenum target, GLintptrARB offset,
    ASSERT(size + offset <= bufObj->Size);
 
    if (bufObj->Data) {
-      _mesa_memcpy( (GLubyte *) bufObj->Data + offset, data, size );
+      memcpy( (GLubyte *) bufObj->Data + offset, data, size );
    }
 }
 
@@ -408,7 +410,7 @@ _mesa_buffer_get_subdata( GLcontext *ctx, GLenum target, GLintptrARB offset,
    (void) ctx; (void) target;
 
    if (bufObj->Data && ((GLsizeiptrARB) (size + offset) <= bufObj->Size)) {
-      _mesa_memcpy( data, (GLubyte *) bufObj->Data + offset, size );
+      memcpy( data, (GLubyte *) bufObj->Data + offset, size );
    }
 }
 
@@ -530,7 +532,7 @@ _mesa_copy_buffer_subdata(GLcontext *ctx,
                                               GL_WRITE_ONLY, dst);
 
    if (srcPtr && dstPtr)
-      _mesa_memcpy(dstPtr + writeOffset, srcPtr + readOffset, size);
+      memcpy(dstPtr + writeOffset, srcPtr + readOffset, size);
 
    ctx->Driver.UnmapBuffer(ctx, GL_COPY_READ_BUFFER, src);
    ctx->Driver.UnmapBuffer(ctx, GL_COPY_WRITE_BUFFER, dst);
@@ -1117,20 +1119,20 @@ _mesa_BufferDataARB(GLenum target, GLsizeiptrARB size,
    }
 
    switch (usage) {
-      case GL_STREAM_DRAW_ARB:
-      case GL_STREAM_READ_ARB:
-      case GL_STREAM_COPY_ARB:
-      case GL_STATIC_DRAW_ARB:
-      case GL_STATIC_READ_ARB:
-      case GL_STATIC_COPY_ARB:
-      case GL_DYNAMIC_DRAW_ARB:
-      case GL_DYNAMIC_READ_ARB:
-      case GL_DYNAMIC_COPY_ARB:
-         /* OK */
-         break;
-      default:
-         _mesa_error(ctx, GL_INVALID_ENUM, "glBufferDataARB(usage)");
-         return;
+   case GL_STREAM_DRAW_ARB:
+   case GL_STREAM_READ_ARB:
+   case GL_STREAM_COPY_ARB:
+   case GL_STATIC_DRAW_ARB:
+   case GL_STATIC_READ_ARB:
+   case GL_STATIC_COPY_ARB:
+   case GL_DYNAMIC_DRAW_ARB:
+   case GL_DYNAMIC_READ_ARB:
+   case GL_DYNAMIC_COPY_ARB:
+      /* OK */
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glBufferDataARB(usage)");
+      return;
    }
 
    bufObj = get_buffer(ctx, target);
@@ -1155,7 +1157,7 @@ _mesa_BufferDataARB(GLenum target, GLsizeiptrARB size,
    bufObj->Written = GL_TRUE;
 
 #ifdef VBO_DEBUG
-   _mesa_printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
+   printf("glBufferDataARB(%u, sz %ld, from %p, usage 0x%x)\n",
                 bufObj->Name, size, data, usage);
 #endif
 
@@ -1223,18 +1225,18 @@ _mesa_MapBufferARB(GLenum target, GLenum access)
    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, NULL);
 
    switch (access) {
-      case GL_READ_ONLY_ARB:
-         accessFlags = GL_MAP_READ_BIT;
-         break;
-      case GL_WRITE_ONLY_ARB:
-         accessFlags = GL_MAP_WRITE_BIT;
-         break;
-      case GL_READ_WRITE_ARB:
-         accessFlags = GL_MAP_READ_BIT | GL_MAP_WRITE_BIT;
-         break;
-      default:
-         _mesa_error(ctx, GL_INVALID_ENUM, "glMapBufferARB(access)");
-         return NULL;
+   case GL_READ_ONLY_ARB:
+      accessFlags = GL_MAP_READ_BIT;
+      break;
+   case GL_WRITE_ONLY_ARB:
+      accessFlags = GL_MAP_WRITE_BIT;
+      break;
+   case GL_READ_WRITE_ARB:
+      accessFlags = GL_MAP_READ_BIT | GL_MAP_WRITE_BIT;
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glMapBufferARB(access)");
+      return NULL;
    }
 
    bufObj = get_buffer(ctx, target);
@@ -1272,8 +1274,8 @@ _mesa_MapBufferARB(GLenum target, GLenum access)
       bufObj->Written = GL_TRUE;
 
 #ifdef VBO_DEBUG
-   _mesa_printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
-                bufObj->Name, bufObj->Size, access);
+   printf("glMapBufferARB(%u, sz %ld, access 0x%x)\n",
+	  bufObj->Name, bufObj->Size, access);
    if (access == GL_WRITE_ONLY_ARB) {
       GLuint i;
       GLubyte *b = (GLubyte *) bufObj->Pointer;
@@ -1349,7 +1351,7 @@ _mesa_UnmapBufferARB(GLenum target)
          }
       }
       if (unchanged) {
-         _mesa_printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
+         printf("glUnmapBufferARB(%u): %u of %ld unchanged, starting at %d\n",
                       bufObj->Name, unchanged, bufObj->Size, pos);
       }
    }
@@ -1383,21 +1385,21 @@ _mesa_GetBufferParameterivARB(GLenum target, GLenum pname, GLint *params)
    }
 
    switch (pname) {
-      case GL_BUFFER_SIZE_ARB:
-         *params = (GLint) bufObj->Size;
-         break;
-      case GL_BUFFER_USAGE_ARB:
-         *params = bufObj->Usage;
-         break;
-      case GL_BUFFER_ACCESS_ARB:
-         *params = simplified_access_mode(bufObj->AccessFlags);
-         break;
-      case GL_BUFFER_MAPPED_ARB:
-         *params = _mesa_bufferobj_mapped(bufObj);
-         break;
-      default:
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameterivARB(pname)");
-         return;
+   case GL_BUFFER_SIZE_ARB:
+      *params = (GLint) bufObj->Size;
+      break;
+   case GL_BUFFER_USAGE_ARB:
+      *params = bufObj->Usage;
+      break;
+   case GL_BUFFER_ACCESS_ARB:
+      *params = simplified_access_mode(bufObj->AccessFlags);
+      break;
+   case GL_BUFFER_MAPPED_ARB:
+      *params = _mesa_bufferobj_mapped(bufObj);
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameterivARB(pname)");
+      return;
    }
 }
 
@@ -1425,21 +1427,21 @@ _mesa_GetBufferParameteri64v(GLenum target, GLenum pname, GLint64 *params)
    }
 
    switch (pname) {
-      case GL_BUFFER_SIZE_ARB:
-         *params = bufObj->Size;
-         break;
-      case GL_BUFFER_USAGE_ARB:
-         *params = bufObj->Usage;
-         break;
-      case GL_BUFFER_ACCESS_ARB:
-         *params = simplified_access_mode(bufObj->AccessFlags);
-         break;
-      case GL_BUFFER_MAPPED_ARB:
-         *params = _mesa_bufferobj_mapped(bufObj);
-         break;
-      default:
-         _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameteri64v(pname)");
-         return;
+   case GL_BUFFER_SIZE_ARB:
+      *params = bufObj->Size;
+      break;
+   case GL_BUFFER_USAGE_ARB:
+      *params = bufObj->Usage;
+      break;
+   case GL_BUFFER_ACCESS_ARB:
+      *params = simplified_access_mode(bufObj->AccessFlags);
+      break;
+   case GL_BUFFER_MAPPED_ARB:
+      *params = _mesa_bufferobj_mapped(bufObj);
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "glGetBufferParameteri64v(pname)");
+      return;
    }
 }
 
@@ -1710,3 +1712,387 @@ _mesa_FlushMappedBufferRange(GLenum target, GLintptr offset, GLsizeiptr length)
    if (ctx->Driver.FlushMappedBufferRange)
       ctx->Driver.FlushMappedBufferRange(ctx, target, offset, length, bufObj);
 }
+
+
+#if FEATURE_APPLE_object_purgeable
+static GLenum
+_mesa_BufferObjectPurgeable(GLcontext *ctx, GLuint name, GLenum option)
+{
+   struct gl_buffer_object *bufObj;
+   GLenum retval;
+
+   bufObj = _mesa_lookup_bufferobj(ctx, name);
+   if (!bufObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glObjectPurgeable(name = 0x%x)", name);
+      return 0;
+   }
+   if (!_mesa_is_bufferobj(bufObj)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glObjectPurgeable(buffer 0)" );
+      return 0;
+   }
+
+   if (bufObj->Purgeable) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glObjectPurgeable(name = 0x%x) is already purgeable", name);
+      return GL_VOLATILE_APPLE;
+   }
+
+   bufObj->Purgeable = GL_TRUE;
+
+   retval = GL_VOLATILE_APPLE;
+   if (ctx->Driver.BufferObjectPurgeable)
+      retval = ctx->Driver.BufferObjectPurgeable(ctx, bufObj, option);
+
+   return retval;
+}
+
+
+static GLenum
+_mesa_RenderObjectPurgeable(GLcontext *ctx, GLuint name, GLenum option)
+{
+   struct gl_renderbuffer *bufObj;
+   GLenum retval;
+
+   bufObj = _mesa_lookup_renderbuffer(ctx, name);
+   if (!bufObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glObjectUnpurgeable(name = 0x%x)", name);
+      return 0;
+   }
+
+   if (bufObj->Purgeable) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glObjectPurgeable(name = 0x%x) is already purgeable", name);
+      return GL_VOLATILE_APPLE;
+   }
+
+   bufObj->Purgeable = GL_TRUE;
+
+   retval = GL_VOLATILE_APPLE;
+   if (ctx->Driver.RenderObjectPurgeable)
+      retval = ctx->Driver.RenderObjectPurgeable(ctx, bufObj, option);
+
+   return retval;
+}
+
+
+static GLenum
+_mesa_TextureObjectPurgeable(GLcontext *ctx, GLuint name, GLenum option)
+{
+   struct gl_texture_object *bufObj;
+   GLenum retval;
+
+   bufObj = _mesa_lookup_texture(ctx, name);
+   if (!bufObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glObjectPurgeable(name = 0x%x)", name);
+      return 0;
+   }
+
+   if (bufObj->Purgeable) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glObjectPurgeable(name = 0x%x) is already purgeable", name);
+      return GL_VOLATILE_APPLE;
+   }
+
+   bufObj->Purgeable = GL_TRUE;
+
+   retval = GL_VOLATILE_APPLE;
+   if (ctx->Driver.TextureObjectPurgeable)
+      retval = ctx->Driver.TextureObjectPurgeable(ctx, bufObj, option);
+
+   return retval;
+}
+
+
+GLenum GLAPIENTRY
+_mesa_ObjectPurgeableAPPLE(GLenum objectType, GLuint name, GLenum option)
+{
+   GLenum retval;
+
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
+
+   if (name == 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glObjectPurgeable(name = 0x%x)", name);
+      return 0;
+   }
+
+   switch (option) {
+   case GL_VOLATILE_APPLE:
+   case GL_RELEASED_APPLE:
+      /* legal */
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glObjectPurgeable(name = 0x%x) invalid option: %d",
+                  name, option);
+      return 0;
+   }
+
+   switch (objectType) {
+   case GL_TEXTURE:
+      retval = _mesa_TextureObjectPurgeable (ctx, name, option);
+      break;
+   case GL_RENDERBUFFER_EXT:
+      retval = _mesa_RenderObjectPurgeable (ctx, name, option);
+      break;
+   case GL_BUFFER_OBJECT_APPLE:
+      retval = _mesa_BufferObjectPurgeable (ctx, name, option);
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glObjectPurgeable(name = 0x%x) invalid type: %d",
+                  name, objectType);
+      return 0;
+   }
+
+   /* In strict conformance to the spec, we must only return VOLATILE when
+    * when passed the VOLATILE option. Madness.
+    *
+    * XXX First fix the spec, then fix me.
+    */
+   return option == GL_VOLATILE_APPLE ? GL_VOLATILE_APPLE : retval;
+}
+
+
+static GLenum
+_mesa_BufferObjectUnpurgeable(GLcontext *ctx, GLuint name, GLenum option)
+{
+   struct gl_buffer_object *bufObj;
+   GLenum retval;
+
+   bufObj = _mesa_lookup_bufferobj(ctx, name);
+   if (!bufObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glObjectUnpurgeable(name = 0x%x)", name);
+      return 0;
+   }
+
+   if (! bufObj->Purgeable) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glObjectUnpurgeable(name = 0x%x) object is "
+                  " already \"unpurged\"", name);
+      return 0;
+   }
+
+   bufObj->Purgeable = GL_FALSE;
+
+   retval = GL_RETAINED_APPLE;
+   if (ctx->Driver.BufferObjectUnpurgeable)
+      retval = ctx->Driver.BufferObjectUnpurgeable(ctx, bufObj, option);
+
+   return retval;
+}
+
+
+static GLenum
+_mesa_RenderObjectUnpurgeable(GLcontext *ctx, GLuint name, GLenum option)
+{
+   struct gl_renderbuffer *bufObj;
+   GLenum retval;
+
+   bufObj = _mesa_lookup_renderbuffer(ctx, name);
+   if (!bufObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glObjectUnpurgeable(name = 0x%x)", name);
+      return 0;
+   }
+
+   if (! bufObj->Purgeable) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glObjectUnpurgeable(name = 0x%x) object is "
+                  " already \"unpurged\"", name);
+      return 0;
+   }
+
+   bufObj->Purgeable = GL_FALSE;
+
+   retval = GL_RETAINED_APPLE;
+   if (ctx->Driver.RenderObjectUnpurgeable)
+      retval = ctx->Driver.RenderObjectUnpurgeable(ctx, bufObj, option);
+
+   return option;
+}
+
+
+static GLenum
+_mesa_TextureObjectUnpurgeable(GLcontext *ctx, GLuint name, GLenum option)
+{
+   struct gl_texture_object *bufObj;
+   GLenum retval;
+
+   bufObj = _mesa_lookup_texture(ctx, name);
+   if (!bufObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glObjectUnpurgeable(name = 0x%x)", name);
+      return 0;
+   }
+
+   if (! bufObj->Purgeable) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glObjectUnpurgeable(name = 0x%x) object is"
+                  " already \"unpurged\"", name);
+      return 0;
+   }
+
+   bufObj->Purgeable = GL_FALSE;
+
+   retval = GL_RETAINED_APPLE;
+   if (ctx->Driver.TextureObjectUnpurgeable)
+      retval = ctx->Driver.TextureObjectUnpurgeable(ctx, bufObj, option);
+
+   return retval;
+}
+
+
+GLenum GLAPIENTRY
+_mesa_ObjectUnpurgeableAPPLE(GLenum objectType, GLuint name, GLenum option)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
+
+   if (name == 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glObjectUnpurgeable(name = 0x%x)", name);
+      return 0;
+   }
+
+   switch (option) {
+   case GL_RETAINED_APPLE:
+   case GL_UNDEFINED_APPLE:
+      /* legal */
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glObjectUnpurgeable(name = 0x%x) invalid option: %d",
+                  name, option);
+      return 0;
+   }
+
+   switch (objectType) {
+   case GL_BUFFER_OBJECT_APPLE:
+      return _mesa_BufferObjectUnpurgeable(ctx, name, option);
+   case GL_TEXTURE:
+      return _mesa_TextureObjectUnpurgeable(ctx, name, option);
+   case GL_RENDERBUFFER_EXT:
+      return _mesa_RenderObjectUnpurgeable(ctx, name, option);
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glObjectUnpurgeable(name = 0x%x) invalid type: %d",
+                  name, objectType);
+      return 0;
+   }
+}
+
+
+static void
+_mesa_GetBufferObjectParameterivAPPLE(GLcontext *ctx, GLuint name,
+                                      GLenum pname, GLint* params)
+{
+   struct gl_buffer_object *bufObj;
+
+   bufObj = _mesa_lookup_bufferobj(ctx, name);
+   if (!bufObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glGetObjectParameteriv(name = 0x%x) invalid object", name);
+      return;
+   }
+
+   switch (pname) {
+   case GL_PURGEABLE_APPLE:
+      *params = bufObj->Purgeable;
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
+                  name, pname);
+      break;
+   }
+}
+
+
+static void
+_mesa_GetRenderObjectParameterivAPPLE(GLcontext *ctx, GLuint name,
+                                      GLenum pname, GLint* params)
+{
+   struct gl_renderbuffer *bufObj;
+
+   bufObj = _mesa_lookup_renderbuffer(ctx, name);
+   if (!bufObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glObjectUnpurgeable(name = 0x%x)", name);
+      return;
+   }
+
+   switch (pname) {
+   case GL_PURGEABLE_APPLE:
+      *params = bufObj->Purgeable;
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
+                  name, pname);
+      break;
+   }
+}
+
+
+static void
+_mesa_GetTextureObjectParameterivAPPLE(GLcontext *ctx, GLuint name,
+                                       GLenum pname, GLint* params)
+{
+   struct gl_texture_object *bufObj;
+
+   bufObj = _mesa_lookup_texture(ctx, name);
+   if (!bufObj) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glObjectUnpurgeable(name = 0x%x)", name);
+      return;
+   }
+
+   switch (pname) {
+   case GL_PURGEABLE_APPLE:
+      *params = bufObj->Purgeable;
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetObjectParameteriv(name = 0x%x) invalid enum: %d",
+                  name, pname);
+      break;
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_GetObjectParameterivAPPLE(GLenum objectType, GLuint name, GLenum pname,
+                                GLint* params)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (name == 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glGetObjectParameteriv(name = 0x%x)", name);
+      return;
+   }
+
+   switch (objectType) {
+   case GL_TEXTURE:
+      _mesa_GetTextureObjectParameterivAPPLE (ctx, name, pname, params);
+      break;
+   case GL_BUFFER_OBJECT_APPLE:
+      _mesa_GetBufferObjectParameterivAPPLE (ctx, name, pname, params);
+      break;
+   case GL_RENDERBUFFER_EXT:
+      _mesa_GetRenderObjectParameterivAPPLE (ctx, name, pname, params);
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetObjectParameteriv(name = 0x%x) invalid type: %d",
+                  name, objectType);
+   }
+}
+
+#endif /* FEATURE_APPLE_object_purgeable */