Adding configuration header file for engine's parameters/limitations

src/config.h

@@ -0,0 +1,88 @@
+/* Copyright 2014 Samsung Electronics Co., Ltd.
+ *
+ * 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.
+ */
+
+#ifndef CONFIG_H
+#define CONFIG_H
+
+/**
+ * Limit of data (system heap, engine's data except engine's own heap)
+ */
+#define CONFIG_MEM_DATA_LIMIT_MINUS_HEAP_SIZE 1024
+
+/**
+ * Limit of stack size
+ */
+#define CONFIG_MEM_STACK_LIMIT 4096
+
+/**
+ * Log2 of maximum number of chunks in a pool
+ */
+#define CONFIG_MEM_POOL_MAX_CHUNKS_NUMBER_LOG 16
+
+/**
+ * Size of pool chunk
+ *
+ * Should not be less than size of any of ECMA Object Model's data types.
+ */
+#define CONFIG_MEM_POOL_CHUNK_SIZE 16
+
+/**
+ * Size of heap chunk
+ */
+#define CONFIG_MEM_HEAP_CHUNK_SIZE 64
+
+/**
+ * Size of heap
+ */
+#define CONFIG_MEM_HEAP_AREA_SIZE (2 * 1024 + 512)
+
+/**
+ * Log2 of maximum possible offset in the heap
+ *
+ * The option affects size of compressed pointer that in turn
+ * affects size of ECMA Object Model's data types.
+ *
+ * In any case size of any of the types should not exceed CONFIG_MEM_POOL_CHUNK_SIZE.
+ *
+ * On the other hand, value 2 ^ CONFIG_MEM_HEAP_OFFSET_LOG should not be less than CONFIG_MEM_HEAP_AREA_SIZE.
+ */
+#define CONFIG_MEM_HEAP_OFFSET_LOG 16
+
+/**
+ * Width of fields used for holding counter of references to ecma-strings and ecma-objects
+ *
+ * The option affects maximum number of simultaneously existing:
+ *  - references to one string;
+ *  - stack references to one object
+ * The number is ((2 ^ CONFIG_ECMA_REFERENCE_COUNTER_WIDTH) - 1).
+ *
+ * Also the option affects size of ECMA Object Model's data types.
+ * In any case size of any of the types should not exceed CONFIG_MEM_POOL_CHUNK_SIZE.
+ */
+#define CONFIG_ECMA_REFERENCE_COUNTER_WIDTH 10
+
+/**
+ * Use 32-bit/64-bit float for ecma-numbers
+ */
+#define CONFIG_ECMA_NUMBER_FLOAT32
+// #define CONFIG_ECMA_NUMBER_FLOAT64
+
+/**
+ * Use ASCII/UTF-16 representation for ecma-characters
+ */
+#define CONFIG_ECMA_CHAR_ASCII
+// #define CONFIG_ECMA_CHAR_UTF16
+
+#endif /* !CONFIG_H */