text: // Copyright (c) 2012-2018 The Bitcoin Core developers
  // Copyright (c) 2017 The Raven Core developers
  // Copyright (c) 2018 The Rito Core developers
  // Copyright (c) 2020 The Ukcoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #ifndef UKC_THREADSAFETY_H
  #define UKC_THREADSAFETY_H
  
  #ifdef __clang__
  // TL;DR Add GUARDED_BY(mutex) to member variables. The others are
  // rarely necessary. Ex: int nFoo GUARDED_BY(cs_foo);
  //
  // See http://clang.llvm.org/docs/LanguageExtensions.html#threadsafety
  // for documentation.  The clang compiler can do advanced static analysis
  // of locking when given the -Wthread-safety option.
  #define LOCKABLE __attribute__((lockable))
  #define SCOPED_LOCKABLE __attribute__((scoped_lockable))
  #define GUARDED_BY(x) __attribute__((guarded_by(x)))
  #define GUARDED_VAR __attribute__((guarded_var))
  #define PT_GUARDED_BY(x) __attribute__((pt_guarded_by(x)))
  #define PT_GUARDED_VAR __attribute__((pt_guarded_var))
  #define ACQUIRED_AFTER(...) __attribute__((acquired_after(__VA_ARGS__)))
  #define ACQUIRED_BEFORE(...) __attribute__((acquired_before(__VA_ARGS__)))
  #define EXCLUSIVE_LOCK_FUNCTION(...) __attribute__((exclusive_lock_function(__VA_ARGS__)))
  #define SHARED_LOCK_FUNCTION(...) __attribute__((shared_lock_function(__VA_ARGS__)))
  #define EXCLUSIVE_TRYLOCK_FUNCTION(...) __attribute__((exclusive_trylock_function(__VA_ARGS__)))
  #define SHARED_TRYLOCK_FUNCTION(...) __attribute__((shared_trylock_function(__VA_ARGS__)))
  #define UNLOCK_FUNCTION(...) __attribute__((unlock_function(__VA_ARGS__)))
  #define LOCK_RETURNED(x) __attribute__((lock_returned(x)))
  #define LOCKS_EXCLUDED(...) __attribute__((locks_excluded(__VA_ARGS__)))
  #define EXCLUSIVE_LOCKS_REQUIRED(...) __attribute__((exclusive_locks_required(__VA_ARGS__)))
  #define SHARED_LOCKS_REQUIRED(...) __attribute__((shared_locks_required(__VA_ARGS__)))
  #define NO_THREAD_SAFETY_ANALYSIS __attribute__((no_thread_safety_analysis))
  #else
  #define LOCKABLE
  #define SCOPED_LOCKABLE
  #define GUARDED_BY(x)
  #define GUARDED_VAR
  #define PT_GUARDED_BY(x)
  #define PT_GUARDED_VAR
  #define ACQUIRED_AFTER(...)
  #define ACQUIRED_BEFORE(...)
  #define EXCLUSIVE_LOCK_FUNCTION(...)
  #define SHARED_LOCK_FUNCTION(...)
  #define EXCLUSIVE_TRYLOCK_FUNCTION(...)
  #define SHARED_TRYLOCK_FUNCTION(...)
  #define UNLOCK_FUNCTION(...)
  #define LOCK_RETURNED(x)
  #define LOCKS_EXCLUDED(...)
  #define EXCLUSIVE_LOCKS_REQUIRED(...)
  #define SHARED_LOCKS_REQUIRED(...)
  #define NO_THREAD_SAFETY_ANALYSIS
  #endif // __GNUC__
  
  #endif // UKC_THREADSAFETY_H
  