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1 //===-- SystemLifetimeManager.cpp -----------------------------------------===//
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 #include "lldb/Initialization/SystemLifetimeManager.h"
10 
11 #include "lldb/Core/Debugger.h"
12 #include "lldb/Initialization/SystemInitializer.h"
13 
14 #include <utility>
15 
16 using namespace lldb_private;
17 
SystemLifetimeManager()18 SystemLifetimeManager::SystemLifetimeManager()
19     : m_mutex(), m_initialized(false) {}
20 
~SystemLifetimeManager()21 SystemLifetimeManager::~SystemLifetimeManager() {
22   assert(!m_initialized &&
23          "SystemLifetimeManager destroyed without calling Terminate!");
24 }
25 
Initialize(std::unique_ptr<SystemInitializer> initializer,LoadPluginCallbackType plugin_callback)26 llvm::Error SystemLifetimeManager::Initialize(
27     std::unique_ptr<SystemInitializer> initializer,
28     LoadPluginCallbackType plugin_callback) {
29   std::lock_guard<std::recursive_mutex> guard(m_mutex);
30   if (!m_initialized) {
31     assert(!m_initializer && "Attempting to call "
32                              "SystemLifetimeManager::Initialize() when it is "
33                              "already initialized");
34     m_initialized = true;
35     m_initializer = std::move(initializer);
36 
37     if (auto e = m_initializer->Initialize())
38       return e;
39 
40     Debugger::Initialize(plugin_callback);
41   }
42 
43   return llvm::Error::success();
44 }
45 
Terminate()46 void SystemLifetimeManager::Terminate() {
47   std::lock_guard<std::recursive_mutex> guard(m_mutex);
48 
49   if (m_initialized) {
50     Debugger::Terminate();
51     m_initializer->Terminate();
52 
53     m_initializer.reset();
54     m_initialized = false;
55   }
56 }
57