1 //===-- SystemLifetimeManager.cpp ------------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "lldb/Initialization/SystemLifetimeManager.h"
11 
12 #include "lldb/Core/Debugger.h"
13 #include "lldb/Initialization/SystemInitializer.h"
14 
15 #include <utility>
16 
17 using namespace lldb_private;
18 
SystemLifetimeManager()19 SystemLifetimeManager::SystemLifetimeManager()
20     : m_mutex(), m_initialized(false) {}
21 
~SystemLifetimeManager()22 SystemLifetimeManager::~SystemLifetimeManager() {
23   assert(!m_initialized &&
24          "SystemLifetimeManager destroyed without calling Terminate!");
25 }
26 
Initialize(std::unique_ptr<SystemInitializer> initializer,const InitializerOptions & options,LoadPluginCallbackType plugin_callback)27 llvm::Error SystemLifetimeManager::Initialize(
28     std::unique_ptr<SystemInitializer> initializer,
29     const InitializerOptions &options, LoadPluginCallbackType plugin_callback) {
30   std::lock_guard<std::recursive_mutex> guard(m_mutex);
31   if (!m_initialized) {
32     assert(!m_initializer && "Attempting to call "
33                              "SystemLifetimeManager::Initialize() when it is "
34                              "already initialized");
35     m_initialized = true;
36     m_initializer = std::move(initializer);
37 
38     if (auto e = m_initializer->Initialize(options))
39       return e;
40 
41     Debugger::Initialize(plugin_callback);
42   }
43 
44   return llvm::Error::success();
45 }
46 
Terminate()47 void SystemLifetimeManager::Terminate() {
48   std::lock_guard<std::recursive_mutex> guard(m_mutex);
49 
50   if (m_initialized) {
51     Debugger::Terminate();
52     m_initializer->Terminate();
53 
54     m_initializer.reset();
55     m_initialized = false;
56   }
57 }
58