From 15ad172a847fa667c57a4594ef4158405db9a984 Mon Sep 17 00:00:00 2001
From: Angelo Mantellini <angelo.mantellini@cisco.com>
Date: Tue, 31 Mar 2020 17:50:43 +0200
Subject: [HICN-554] hicn-light refactoring
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Change-Id: I36f2d393741d4502ce14d3791158e43e3e9cd4cf
Signed-off-by: Jordan Augé <jordan.auge+fdio@cisco.com>
---
 hicn-light/src/hicn/base/vector.c | 54 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 hicn-light/src/hicn/base/vector.c

(limited to 'hicn-light/src/hicn/base/vector.c')

diff --git a/hicn-light/src/hicn/base/vector.c b/hicn-light/src/hicn/base/vector.c
new file mode 100644
index 000000000..00ed7c305
--- /dev/null
+++ b/hicn-light/src/hicn/base/vector.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * \file vector.c
+ * \brief Implementation of resizeable static array
+ */
+
+#include <stddef.h> // size_t
+#include <stdlib.h> // calloc
+
+#include "vector.h"
+
+void
+_vector_init(void ** vector_ptr, size_t elt_size, size_t max_elts)
+{
+    vector_hdr_t * vh = calloc(VECTOR_HDRLEN + elt_size * max_elts, 1);
+    *vector_ptr = (uint8_t*)vh - VECTOR_HDRLEN;
+}
+
+void
+_vector_free(void ** vector_ptr)
+{
+    free(vector_hdr(*vector_ptr));
+    *vector_ptr = NULL;
+}
+
+void
+_vector_resize(void ** vector_ptr, size_t elt_size, off_t pos)
+{
+    vector_hdr_t * vh = vector_hdr(*vector_ptr);
+    size_t new_elts = (pos > 0) ? next_pow2(pos) : vh->max_elts * 2;
+
+    /* Double the allocated vector size */
+    vh = realloc(vh, VECTOR_HDRLEN + new_elts * elt_size);
+    if (!vh)
+        abort();
+    vh->max_elts = new_elts;
+
+    /* Reassign vector pointer */
+    *vector_ptr = (uint8_t*) + VECTOR_HDRLEN;
+}
-- 
cgit 1.2.3-korg