91 lines
1.9 KiB
C++
91 lines
1.9 KiB
C++
//===-- tsan_mutex.h --------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of ThreadSanitizer (TSan), a race detector.
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//
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//===----------------------------------------------------------------------===//
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#ifndef TSAN_MUTEX_H
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#define TSAN_MUTEX_H
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#include "sanitizer_common/sanitizer_atomic.h"
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#include "sanitizer_common/sanitizer_mutex.h"
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#include "tsan_defs.h"
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namespace __tsan {
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enum MutexType {
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MutexTypeInvalid,
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MutexTypeTrace,
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MutexTypeThreads,
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MutexTypeReport,
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MutexTypeSyncVar,
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MutexTypeSyncTab,
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MutexTypeSlab,
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MutexTypeAnnotations,
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MutexTypeAtExit,
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MutexTypeMBlock,
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MutexTypeJavaMBlock,
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MutexTypeDDetector,
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MutexTypeFired,
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MutexTypeRacy,
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MutexTypeGlobalProc,
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// This must be the last.
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MutexTypeCount
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};
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class Mutex {
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public:
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explicit Mutex(MutexType type, StatType stat_type);
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~Mutex();
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void Lock();
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void Unlock();
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void ReadLock();
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void ReadUnlock();
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void CheckLocked();
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private:
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atomic_uintptr_t state_;
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#if SANITIZER_DEBUG
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MutexType type_;
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#endif
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#if TSAN_COLLECT_STATS
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StatType stat_type_;
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#endif
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Mutex(const Mutex&);
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void operator = (const Mutex&);
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};
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typedef GenericScopedLock<Mutex> Lock;
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typedef GenericScopedReadLock<Mutex> ReadLock;
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class InternalDeadlockDetector {
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public:
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InternalDeadlockDetector();
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void Lock(MutexType t);
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void Unlock(MutexType t);
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void CheckNoLocks();
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private:
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u64 seq_;
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u64 locked_[MutexTypeCount];
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};
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void InitializeMutex();
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// Checks that the current thread does not hold any runtime locks
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// (e.g. when returning from an interceptor).
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void CheckNoLocks(ThreadState *thr);
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} // namespace __tsan
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#endif // TSAN_MUTEX_H
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