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55 lines
2.5 KiB
55 lines
2.5 KiB
// Copyright (c) 2009-2010 Satoshi Nakamoto |
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// Copyright (c) 2009-2012 The Bitcoin developers |
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// Distributed under the MIT/X11 software license, see the accompanying |
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// file COPYING or http://www.opensource.org/licenses/mit-license.php. |
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#ifndef BITCOIN_THREADSAFETY_H |
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#define BITCOIN_THREADSAFETY_H |
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#ifdef __clang__ |
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// TL;DR Add GUARDED_BY(mutex) to member variables. The others are |
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// rarely necessary. Ex: int nFoo GUARDED_BY(cs_foo); |
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// |
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// See http://clang.llvm.org/docs/LanguageExtensions.html#threadsafety |
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// for documentation. The clang compiler can do advanced static analysis |
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// of locking when given the -Wthread-safety option. |
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#define LOCKABLE __attribute__((lockable)) |
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#define SCOPED_LOCKABLE __attribute__((scoped_lockable)) |
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#define GUARDED_BY(x) __attribute__((guarded_by(x))) |
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#define GUARDED_VAR __attribute__((guarded_var)) |
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#define PT_GUARDED_BY(x) __attribute__((pt_guarded_by(x))) |
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#define PT_GUARDED_VAR __attribute__((pt_guarded_var)) |
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#define ACQUIRED_AFTER(...) __attribute__((acquired_after(__VA_ARGS__))) |
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#define ACQUIRED_BEFORE(...) __attribute__((acquired_before(__VA_ARGS__))) |
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#define EXCLUSIVE_LOCK_FUNCTION(...) __attribute__((exclusive_lock_function(__VA_ARGS__))) |
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#define SHARED_LOCK_FUNCTION(...) __attribute__((shared_lock_function(__VA_ARGS__))) |
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#define EXCLUSIVE_TRYLOCK_FUNCTION(...) __attribute__((exclusive_trylock_function(__VA_ARGS__))) |
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#define SHARED_TRYLOCK_FUNCTION(...) __attribute__((shared_trylock_function(__VA_ARGS__))) |
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#define UNLOCK_FUNCTION(...) __attribute__((unlock_function(__VA_ARGS__))) |
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#define LOCK_RETURNED(x) __attribute__((lock_returned(x))) |
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#define LOCKS_EXCLUDED(...) __attribute__((locks_excluded(__VA_ARGS__))) |
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#define EXCLUSIVE_LOCKS_REQUIRED(...) __attribute__((exclusive_locks_required(__VA_ARGS__))) |
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#define SHARED_LOCKS_REQUIRED(...) __attribute__((shared_locks_required(__VA_ARGS__))) |
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#define NO_THREAD_SAFETY_ANALYSIS __attribute__((no_thread_safety_analysis)) |
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#else |
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#define LOCKABLE |
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#define SCOPED_LOCKABLE |
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#define GUARDED_BY(x) |
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#define GUARDED_VAR |
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#define PT_GUARDED_BY(x) |
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#define PT_GUARDED_VAR |
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#define ACQUIRED_AFTER(...) |
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#define ACQUIRED_BEFORE(...) |
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#define EXCLUSIVE_LOCK_FUNCTION(...) |
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#define SHARED_LOCK_FUNCTION(...) |
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#define EXCLUSIVE_TRYLOCK_FUNCTION(...) |
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#define SHARED_TRYLOCK_FUNCTION(...) |
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#define UNLOCK_FUNCTION(...) |
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#define LOCK_RETURNED(x) |
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#define LOCKS_EXCLUDED(...) |
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#define EXCLUSIVE_LOCKS_REQUIRED(...) |
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#define SHARED_LOCKS_REQUIRED(...) |
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#define NO_THREAD_SAFETY_ANALYSIS |
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#endif // __GNUC__ |
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#endif // BITCOIN_THREADSAFETY_H
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