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+/*
+ * Copyright 2021 WebAssembly Community Group participants
+ *
+ * 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.
+ */
+
+// Constants that control fuzzing.
+
+#ifndef wasm_tools_fuzzing_parameters_h
+#define wasm_tools_fuzzing_parameters_h
+
+#include "wasm.h"
+
+namespace wasm {
+
+// The maximum amount of params to each function.
+constexpr int MAX_PARAMS = 10;
+
+// The maximum amount of vars in each function.
+constexpr int MAX_VARS = 20;
+
+// The maximum number of globals in a module.
+constexpr int MAX_GLOBALS = 20;
+
+// The maximum number of tuple elements.
+constexpr int MAX_TUPLE_SIZE = 6;
+
+// The maximum number of struct fields.
+static const int MAX_STRUCT_SIZE = 6;
+
+// The maximum rtt depth.
+constexpr int MAX_RTT_DEPTH = 3;
+
+// The number of nontrivial heap types to generate.
+constexpr int MIN_HEAPTYPES = 4;
+constexpr int MAX_HEAPTYPES = 20;
+
+// some things require luck, try them a few times
+constexpr int TRIES = 10;
+
+// beyond a nesting limit, greatly decrease the chance to continue to nest
+constexpr int NESTING_LIMIT = 11;
+
+// the maximum size of a block
+constexpr int BLOCK_FACTOR = 5;
+
+// the memory that we use, a small portion so that we have a good chance of
+// looking at writes (we also look outside of this region with small
+// probability) this should be a power of 2
+constexpr Address USABLE_MEMORY = 16;
+
+// the number of runtime iterations (function calls, loop backbranches) we
+// allow before we stop execution with a trap, to prevent hangs. 0 means
+// no hang protection.
+constexpr int HANG_LIMIT = 10;
+
+//
+constexpr size_t VeryImportant = 4;
+constexpr size_t Important = 2;
+
+} // namespace wasm
+
+#endif // wasm_tools_fuzzing_parameters_h