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//===-- ThreadSafeValue.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
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_ThreadSafeValue_h_
#define liblldb_ThreadSafeValue_h_
#include <mutex>
#include "lldb/lldb-defines.h"
namespace lldb_private {
template <class T> class ThreadSafeValue {
public:
//------------------------------------------------------------------
// Constructors and Destructors
//------------------------------------------------------------------
ThreadSafeValue() : m_value(), m_mutex() {}
ThreadSafeValue(const T &value) : m_value(value), m_mutex() {}
~ThreadSafeValue() {}
T GetValue() const {
T value;
{
std::lock_guard<std::recursive_mutex> guard(m_mutex);
value = m_value;
}
return value;
}
// Call this if you have already manually locked the mutex using the
// GetMutex() accessor
const T &GetValueNoLock() const { return m_value; }
void SetValue(const T &value) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
m_value = value;
}
// Call this if you have already manually locked the mutex using the
// GetMutex() accessor
void SetValueNoLock(const T &value) { m_value = value; }
std::recursive_mutex &GetMutex() { return m_mutex; }
private:
T m_value;
mutable std::recursive_mutex m_mutex;
//------------------------------------------------------------------
// For ThreadSafeValue only
//------------------------------------------------------------------
DISALLOW_COPY_AND_ASSIGN(ThreadSafeValue);
};
} // namespace lldb_private
#endif // liblldb_ThreadSafeValue_h_
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