Line data    Source code

       1             : // Copyright 2017 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #ifndef V8_TEST_COMMON_FLAG_UTILS_H
       6             : #define V8_TEST_COMMON_FLAG_UTILS_H
       7             : 
       8             : namespace v8 {
       9             : namespace internal {
      10             : 
      11             : template <typename T>
      12             : class FlagScope {
      13             :  public:
      14        4002 :   FlagScope(T* flag, T new_value) : flag_(flag), previous_value_(*flag) {
      15        4017 :     *flag = new_value;
      16             :   }
      17        4001 :   ~FlagScope() { *flag_ = previous_value_; }
      18             : 
      19             :  private:
      20             :   T* flag_;
      21             :   T previous_value_;
      22             : };
      23             : 
      24             : #define FLAG_SCOPE(flag) \
      25             :   FlagScope<bool> __scope_##flag##__LINE__(&FLAG_##flag, true)
      26             : 
      27             : #define EXPERIMENTAL_FLAG_SCOPE(flag) FLAG_SCOPE(experimental_wasm_##flag)
      28             : 
      29             : }  // namespace internal
      30             : }  // namespace v8
      31             : 
      32             : #endif  // V8_TEST_COMMON_FLAG_UTILS_H