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108 lines
3.0 KiB
108 lines
3.0 KiB
// Copyright (c) 2012 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#ifndef STORAGE_LEVELDB_PORT_THREAD_ANNOTATIONS_H_
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#define STORAGE_LEVELDB_PORT_THREAD_ANNOTATIONS_H_
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// Use Clang's thread safety analysis annotations when available. In other
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// environments, the macros receive empty definitions.
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// Usage documentation: https://clang.llvm.org/docs/ThreadSafetyAnalysis.html
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#if !defined(THREAD_ANNOTATION_ATTRIBUTE__)
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#if defined(__clang__)
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#define THREAD_ANNOTATION_ATTRIBUTE__(x) __attribute__((x))
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#else
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#define THREAD_ANNOTATION_ATTRIBUTE__(x) // no-op
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#endif
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#endif // !defined(THREAD_ANNOTATION_ATTRIBUTE__)
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#ifndef GUARDED_BY
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#define GUARDED_BY(x) THREAD_ANNOTATION_ATTRIBUTE__(guarded_by(x))
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#endif
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#ifndef PT_GUARDED_BY
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#define PT_GUARDED_BY(x) THREAD_ANNOTATION_ATTRIBUTE__(pt_guarded_by(x))
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#endif
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#ifndef ACQUIRED_AFTER
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#define ACQUIRED_AFTER(...) \
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THREAD_ANNOTATION_ATTRIBUTE__(acquired_after(__VA_ARGS__))
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#endif
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#ifndef ACQUIRED_BEFORE
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#define ACQUIRED_BEFORE(...) \
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THREAD_ANNOTATION_ATTRIBUTE__(acquired_before(__VA_ARGS__))
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#endif
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#ifndef EXCLUSIVE_LOCKS_REQUIRED
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#define EXCLUSIVE_LOCKS_REQUIRED(...) \
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THREAD_ANNOTATION_ATTRIBUTE__(exclusive_locks_required(__VA_ARGS__))
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#endif
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#ifndef SHARED_LOCKS_REQUIRED
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#define SHARED_LOCKS_REQUIRED(...) \
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THREAD_ANNOTATION_ATTRIBUTE__(shared_locks_required(__VA_ARGS__))
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#endif
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#ifndef LOCKS_EXCLUDED
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#define LOCKS_EXCLUDED(...) \
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THREAD_ANNOTATION_ATTRIBUTE__(locks_excluded(__VA_ARGS__))
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#endif
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#ifndef LOCK_RETURNED
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#define LOCK_RETURNED(x) THREAD_ANNOTATION_ATTRIBUTE__(lock_returned(x))
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#endif
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#ifndef LOCKABLE
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#define LOCKABLE THREAD_ANNOTATION_ATTRIBUTE__(lockable)
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#endif
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#ifndef SCOPED_LOCKABLE
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#define SCOPED_LOCKABLE THREAD_ANNOTATION_ATTRIBUTE__(scoped_lockable)
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#endif
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#ifndef EXCLUSIVE_LOCK_FUNCTION
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#define EXCLUSIVE_LOCK_FUNCTION(...) \
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THREAD_ANNOTATION_ATTRIBUTE__(exclusive_lock_function(__VA_ARGS__))
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#endif
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#ifndef SHARED_LOCK_FUNCTION
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#define SHARED_LOCK_FUNCTION(...) \
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THREAD_ANNOTATION_ATTRIBUTE__(shared_lock_function(__VA_ARGS__))
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#endif
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#ifndef EXCLUSIVE_TRYLOCK_FUNCTION
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#define EXCLUSIVE_TRYLOCK_FUNCTION(...) \
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THREAD_ANNOTATION_ATTRIBUTE__(exclusive_trylock_function(__VA_ARGS__))
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#endif
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#ifndef SHARED_TRYLOCK_FUNCTION
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#define SHARED_TRYLOCK_FUNCTION(...) \
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THREAD_ANNOTATION_ATTRIBUTE__(shared_trylock_function(__VA_ARGS__))
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#endif
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#ifndef UNLOCK_FUNCTION
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#define UNLOCK_FUNCTION(...) \
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THREAD_ANNOTATION_ATTRIBUTE__(unlock_function(__VA_ARGS__))
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#endif
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#ifndef NO_THREAD_SAFETY_ANALYSIS
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#define NO_THREAD_SAFETY_ANALYSIS \
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THREAD_ANNOTATION_ATTRIBUTE__(no_thread_safety_analysis)
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#endif
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#ifndef ASSERT_EXCLUSIVE_LOCK
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#define ASSERT_EXCLUSIVE_LOCK(...) \
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THREAD_ANNOTATION_ATTRIBUTE__(assert_exclusive_lock(__VA_ARGS__))
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#endif
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#ifndef ASSERT_SHARED_LOCK
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#define ASSERT_SHARED_LOCK(...) \
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THREAD_ANNOTATION_ATTRIBUTE__(assert_shared_lock(__VA_ARGS__))
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#endif
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#endif // STORAGE_LEVELDB_PORT_THREAD_ANNOTATIONS_H_
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