llvm/compiler-rt/lib/tsan/rtl/tsan_mutexset.h

//===-- tsan_mutexset.h -----------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is a part of ThreadSanitizer (TSan), a race detector.
//
// MutexSet holds the set of mutexes currently held by a thread.
//===----------------------------------------------------------------------===//
#ifndef TSAN_MUTEXSET_H
#define TSAN_MUTEXSET_H

#include "tsan_defs.h"

namespace __tsan {

class MutexSet { … };

// MutexSet is too large to live on stack.
// DynamicMutexSet can be use used to create local MutexSet's.
class DynamicMutexSet { … };

// Go does not have mutexes, so do not spend memory and time.
// (Go sync.Mutex is actually a semaphore -- can be unlocked
// in different goroutine).
#if SANITIZER_GO
MutexSet::MutexSet() {}
void MutexSet::Reset() {}
void MutexSet::AddAddr(uptr addr, StackID stack_id, bool write) {}
void MutexSet::DelAddr(uptr addr, bool destroy) {}
uptr MutexSet::Size() const { return 0; }
MutexSet::Desc MutexSet::Get(uptr i) const { return Desc(); }
DynamicMutexSet::DynamicMutexSet() : ptr_(&set_) {}
DynamicMutexSet::~DynamicMutexSet() {}
#endif

}  // namespace __tsan

#endif  // TSAN_MUTEXSET_H