forked from OSchip/llvm-project
99 lines
1.7 KiB
C++
99 lines
1.7 KiB
C++
//===-- tsan_mutex.h --------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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 "tsan_atomic.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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// 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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private:
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atomic_uintptr_t state_;
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#if TSAN_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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class Lock {
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public:
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explicit Lock(Mutex *m);
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~Lock();
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private:
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Mutex *m_;
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Lock(const Lock&);
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void operator = (const Lock&);
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};
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class ReadLock {
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public:
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explicit ReadLock(Mutex *m);
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~ReadLock();
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private:
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Mutex *m_;
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ReadLock(const ReadLock&);
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void operator = (const ReadLock&);
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};
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class DeadlockDetector {
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public:
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DeadlockDetector();
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void Lock(MutexType t);
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void Unlock(MutexType t);
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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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} // namespace __tsan
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#endif // TSAN_MUTEX_H
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