1 files changed, 122 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/vega/util_array.h b/src/gallium/state_trackers/vega/util_array.h
new file mode 100644
index 00000000000..4343dfe36e2
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+++ b/src/gallium/state_trackers/vega/util_array.h
@@ -0,0 +1,122 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#ifndef UTIL_ARRAY_H
+#define UTIL_ARRAY_H
+
+#include "util/u_memory.h"
+
+#define DEFAULT_ARRAY_SIZE 256
+
+struct array {
+   VGint          datatype_size;
+   void          *data;
+   VGint          size;
+   VGint          num_elements;
+};
+
+static INLINE struct array *array_create(VGint datatype_size)
+{
+   struct array *array = CALLOC_STRUCT(array);
+   array->datatype_size = datatype_size;
+
+   array->size = DEFAULT_ARRAY_SIZE;
+   array->data = malloc(array->size * array->datatype_size);
+
+   return array;
+}
+
+
+static INLINE struct array *array_create_size(VGint datatype_size, VGint size)
+{
+   struct array *array = CALLOC_STRUCT(array);
+   array->datatype_size = datatype_size;
+
+   array->size = size;
+   array->data = malloc(array->size * array->datatype_size);
+
+   return array;
+}
+
+static INLINE void array_destroy(struct array *array)
+{
+   if (array)
+      free(array->data);
+   free(array);
+}
+
+static INLINE void array_resize(struct array *array, int num)
+{
+   VGint size = array->datatype_size * num;
+   void *data = malloc(size);
+   memcpy(data, array->data, array->size * array->datatype_size);
+   free(array->data);
+   array->data = data;
+   array->size = num;
+   array->num_elements = (array->num_elements > num) ? num :
+                         array->num_elements;
+}
+
+static INLINE void array_append_data(struct array *array,
+                              const void *data, int num_elements)
+{
+   VGbyte *adata;
+
+   while (array->num_elements + num_elements > array->size) {
+      array_resize(array, (array->num_elements + num_elements) * 1.5);
+   }
+   adata = (VGbyte *)array->data;
+   memcpy(adata + (array->num_elements * array->datatype_size), data,
+          num_elements * array->datatype_size);
+   array->num_elements += num_elements;
+}
+
+static INLINE void array_change_data(struct array *array,
+                              const void *data,
+                              int start_idx,
+                              int num_elements)
+{
+   VGbyte *adata = (VGbyte *)array->data;
+   memcpy(adata + (start_idx * array->datatype_size), data,
+          num_elements * array->datatype_size);
+}
+
+static INLINE void array_remove_element(struct array *array,
+                                        int idx)
+{
+   VGbyte *adata = (VGbyte *)array->data;
+   memmove(adata + (idx * array->datatype_size),
+           adata + ((idx + 1) * array->datatype_size),
+           (array->num_elements - idx - 1) * array->datatype_size);
+   --array->num_elements;
+}
+
+static INLINE void array_reset(struct array *array)
+{
+   array->num_elements = 0;
+}
+
+#endif