code generator for fixed size memory pool allocation

src/btstack_memory_generator.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python
+
+header_template = """void * btstack_memory_STRUCT_NAME_get(void);
+void   btstack_memory_STRUCT_NAME_free(void *STRUCT_NAME);"""
+
+code_template = """
+// MARK: STRUCT_TYPE
+#ifdef POOL_COUNT
+static STRUCT_TYPE STRUCT_NAME_storage[POOL_COUNT];
+static memory_pool_t STRUCT_NAME_pool;
+void * btstack_memory_STRUCT_NAME_get(void){
+    return memory_pool_get(&STRUCT_NAME_pool);
+}
+void   btstack_memory_STRUCT_NAME_free(void *STRUCT_NAME){
+    memory_pool_free(&STRUCT_NAME_pool, STRUCT_NAME);
+}
+#elif defined(HAVE_MALLOC)
+void * btstack_memory_STRUCT_NAME_get(void){
+    return malloc(sizeof(STRUCT_TYPE));
+}
+void  btstack_memory_STRUCT_NAME_free(void *STRUCT_NAME){
+    free(STRUCT_NAME);
+}
+#else
+#error BTstack needs at least one STRUCT_TYPE, but neither POOL_COUNT nor HAVE_MALLOC are defined
+#endif
+"""
+
+init_template = """#ifdef POOL_COUNT
+    memory_pool_create(&STRUCT_NAME_pool, STRUCT_NAME_storage, POOL_COUNT, sizeof(STRUCT_TYPE));
+#endif"""
+
+def replacePlaceholder(template, struct_name):
+    struct_type = struct_name + '_t'
+    pool_count = "MAX_NO_" + struct_name.upper() + "S"
+    
+    snippet = template.replace("STRUCT_TYPE", struct_type).replace("STRUCT_NAME", struct_name).replace("POOL_COUNT", pool_count)
+    return snippet
+    
+list_of_structs = [ "hci_connection", "l2cap_service", "l2cap_channel", "rfcomm_multiplexer", "rfcomm_service", "rfcomm_channel" ]
+
+print "// header file"
+for struct_name in list_of_structs:
+    print replacePlaceholder(header_template, struct_name)
+
+print "// template code"
+for struct_name in list_of_structs:
+    print replacePlaceholder(code_template, struct_name)
+
+print "// init"
+print "void btstack_memory_init(void){"
+for struct_name in list_of_structs:
+    print replacePlaceholder(init_template, struct_name)
+print "}"
+
+