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//===------------------SharedCluster.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 LLDB_UTILITY_SHAREDCLUSTER_H
#define LLDB_UTILITY_SHAREDCLUSTER_H
#include "lldb/Utility/LLDBAssert.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallVector.h"
#include <memory>
#include <mutex>
namespace lldb_private {
template <class T>
class ClusterManager : public std::enable_shared_from_this<ClusterManager<T>> {
public:
static std::shared_ptr<ClusterManager> Create() {
return std::shared_ptr<ClusterManager>(new ClusterManager());
}
~ClusterManager() {
for (T *obj : m_objects)
delete obj;
}
void ManageObject(T *new_object) {
std::lock_guard<std::mutex> guard(m_mutex);
assert(!llvm::is_contained(m_objects, new_object) &&
"ManageObject called twice for the same object?");
m_objects.push_back(new_object);
}
std::shared_ptr<T> GetSharedPointer(T *desired_object) {
std::lock_guard<std::mutex> guard(m_mutex);
auto this_sp = this->shared_from_this();
if (!llvm::is_contained(m_objects, desired_object)) {
lldbassert(false && "object not found in shared cluster when expected");
desired_object = nullptr;
}
return {std::move(this_sp), desired_object};
}
private:
ClusterManager() : m_objects() {}
llvm::SmallVector<T *, 16> m_objects;
std::mutex m_mutex;
};
} // namespace lldb_private
#endif // LLDB_UTILITY_SHAREDCLUSTER_H
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