6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
//===-- ThreadSafeValue.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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#ifndef LLDB_CORE_THREADSAFEVALUE_H
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#define LLDB_CORE_THREADSAFEVALUE_H
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#include <mutex>
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#include "lldb/lldb-defines.h"
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namespace lldb_private {
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template <class T> class ThreadSafeValue {
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public:
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ThreadSafeValue() = default;
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ThreadSafeValue(const T &value) : m_value(value) {}
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~ThreadSafeValue() = default;
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T GetValue() const {
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T value;
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{
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std::lock_guard<std::recursive_mutex> guard(m_mutex);
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value = m_value;
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}
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return value;
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}
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// Call this if you have already manually locked the mutex using the
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// GetMutex() accessor
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const T &GetValueNoLock() const { return m_value; }
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void SetValue(const T &value) {
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std::lock_guard<std::recursive_mutex> guard(m_mutex);
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m_value = value;
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}
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// Call this if you have already manually locked the mutex using the
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// GetMutex() accessor
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// coverity[missing_lock]
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void SetValueNoLock(const T &value) { m_value = value; }
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std::recursive_mutex &GetMutex() { return m_mutex; }
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private:
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T m_value;
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mutable std::recursive_mutex m_mutex;
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// For ThreadSafeValue only
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ThreadSafeValue(const ThreadSafeValue &) = delete;
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const ThreadSafeValue &operator=(const ThreadSafeValue &) = delete;
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};
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} // namespace lldb_private
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#endif // LLDB_CORE_THREADSAFEVALUE_H
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