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SharedCluster.h
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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 
13 #include "llvm/ADT/STLExtras.h"
14 #include "llvm/ADT/SmallVector.h"
15 
16 #include <memory>
17 #include <mutex>
18 
19 namespace lldb_private {
20 
21 template <class T>
22 class ClusterManager : public std::enable_shared_from_this<ClusterManager<T>> {
23 public:
24  static std::shared_ptr<ClusterManager> Create() {
25  return std::shared_ptr<ClusterManager>(new ClusterManager());
26  }
27 
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 
50 private:
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
lldb_private::ClusterManager::GetSharedPointer
std::shared_ptr< T > GetSharedPointer(T *desired_object)
Definition: SharedCluster.h:40
lldb_private::ClusterManager::~ClusterManager
~ClusterManager()
Definition: SharedCluster.h:28
lldb_private::ClusterManager
Definition: SharedCluster.h:22
lldb_private::ClusterManager::ManageObject
void ManageObject(T *new_object)
Definition: SharedCluster.h:33
LLDBAssert.h
lldb_private::ClusterManager::ClusterManager
ClusterManager()
Definition: SharedCluster.h:51
lldbassert
#define lldbassert(x)
Definition: LLDBAssert.h:15
lldb_private::ClusterManager::m_objects
llvm::SmallVector< T *, 16 > m_objects
Definition: SharedCluster.h:53
lldb_private
A class that represents a running process on the host machine.
Definition: SBCommandInterpreterRunOptions.h:16
lldb_private::ClusterManager::m_mutex
std::mutex m_mutex
Definition: SharedCluster.h:54
lldb_private::ClusterManager::Create
static std::shared_ptr< ClusterManager > Create()
Definition: SharedCluster.h:24