1 files changed, 83 insertions, 0 deletions
diff --git a/third-party/tommyds/tommyarray.c b/third-party/tommyds/tommyarray.c
new file mode 100644
index 0000000..a8d946b
--- /dev/null
+++ b/third-party/tommyds/tommyarray.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2011, Andrea Mazzoleni. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "tommyarray.h"
+
+/******************************************************************************/
+/* array */
+
+void tommy_array_init(tommy_array* array)
+{
+	tommy_uint_t i;
+
+	/* fixed initial size */
+	array->bucket_bit = TOMMY_ARRAY_BIT;
+	array->bucket_max = 1 << array->bucket_bit;
+	array->bucket[0] = tommy_cast(void**, tommy_calloc(array->bucket_max, sizeof(void*)));
+	for (i = 1; i < TOMMY_ARRAY_BIT; ++i)
+		array->bucket[i] = array->bucket[0];
+
+	array->count = 0;
+}
+
+void tommy_array_done(tommy_array* array)
+{
+	tommy_uint_t i;
+
+	tommy_free(array->bucket[0]);
+	for (i = TOMMY_ARRAY_BIT; i < array->bucket_bit; ++i) {
+		void** segment = array->bucket[i];
+		tommy_free(&segment[((tommy_ptrdiff_t)1) << i]);
+	}
+}
+
+void tommy_array_grow(tommy_array* array, tommy_count_t count)
+{
+	if (array->count >= count)
+		return;
+	array->count = count;
+
+	while (count > array->bucket_max) {
+		void** segment;
+
+		/* allocate one more segment */
+		segment = tommy_cast(void**, tommy_calloc(array->bucket_max, sizeof(void*)));
+
+		/* store it adjusting the offset */
+		/* cast to ptrdiff_t to ensure to get a negative value */
+		array->bucket[array->bucket_bit] = &segment[-(tommy_ptrdiff_t)array->bucket_max];
+
+		++array->bucket_bit;
+		array->bucket_max = 1 << array->bucket_bit;
+	}
+}
+
+tommy_size_t tommy_array_memory_usage(tommy_array* array)
+{
+	return array->bucket_max * (tommy_size_t)sizeof(void*);
+}
+