1//===------------------SharedCluster.h --------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLDB_UTILITY_SHAREDCLUSTER_H
10#define LLDB_UTILITY_SHAREDCLUSTER_H
11
12#include "lldb/Utility/LLDBAssert.h"
13#include "llvm/ADT/STLExtras.h"
14#include "llvm/ADT/SmallVector.h"
15
16#include <memory>
17#include <mutex>
18
19namespace lldb_private {
20
21template <class T>
22class ClusterManager : public std::enable_shared_from_this<ClusterManager<T>> {
23public:
24 static std::shared_ptr<ClusterManager> Create() {
25 return std::shared_ptr<ClusterManager>(new ClusterManager());
26 }
27
28 ~ClusterManager() {
29 for (T *obj : m_objects)
30 delete obj;
31 }
32
33 void ManageObject(T *new_object) {
34 std::lock_guard<std::mutex> guard(m_mutex);
35 assert(!llvm::is_contained(m_objects, new_object) &&
36 "ManageObject called twice for the same object?");
37 m_objects.push_back(new_object);
38 }
39
40 std::shared_ptr<T> GetSharedPointer(T *desired_object) {
41 std::lock_guard<std::mutex> guard(m_mutex);
42 auto this_sp = this->shared_from_this();
43 if (!llvm::is_contained(m_objects, desired_object)) {
44 lldbassert(false && "object not found in shared cluster when expected");
45 desired_object = nullptr;
46 }
47 return {std::move(this_sp), desired_object};
48 }
49
50private:
51 ClusterManager() : m_objects(), m_mutex() {}
52
53 llvm::SmallVector<T *, 16> m_objects;
54 std::mutex m_mutex;
55};
56
57} // namespace lldb_private
58
59#endif // LLDB_UTILITY_SHAREDCLUSTER_H
60