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19ac12e516
1e3bcd251768baeb95e555d51d2dc787a6b2acee [net_processing] Add thread safety annotations (Jesse Cohen) f393a533bebc088985f94c725b9af881500ba998 Annotate AssertLockHeld() with ASSERT_CAPABILITY() for thread safety analysis (Jesse Cohen) Pull request description: (note that this depends on #13417) This commit fully annotates all globals in net_processing with clang thread safety annotations. Subsequent commits will begin transitioning some of this data away from cs_main into locks that are local to net_processing. Static thread safety analysis should it easier to verify correctness of that process. Tree-SHA512: b47aa410cb9ada21072370176aea9a74c575643fa1ee8cf1d43c8e28675eef17f33e5242ac422f840e8178e132ecb58412034c6334b68f1b57c686df80d4e8e2
58 lines
2.6 KiB
C
58 lines
2.6 KiB
C
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2014 The Bitcoin Core developers
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// Distributed under the MIT 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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#define ASSERT_EXCLUSIVE_LOCK(...) __attribute((assert_exclusive_lock(__VA_ARGS__)))
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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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#define ASSERT_EXCLUSIVE_LOCK(...)
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#endif // __GNUC__
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#endif // BITCOIN_THREADSAFETY_H
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