contrib/llvm/tools/lldb/source/Initialization/SystemLifetimeManager.cpp

   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
  19 SystemLifetimeManager::SystemLifetimeManager()
  20     : m_mutex(), m_initialized(false) {}
  21
  22 SystemLifetimeManager::~SystemLifetimeManager() {
  23   assert(!m_initialized &&
  24          "SystemLifetimeManager destroyed without calling Terminate!");
  25 }
  26
  27 void SystemLifetimeManager::Initialize(
  28     std::unique_ptr<SystemInitializer> initializer,
  29     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     m_initializer->Initialize();
  39     Debugger::Initialize(plugin_callback);
  40   }
  41 }
  42
  43 void SystemLifetimeManager::Terminate() {
  44   std::lock_guard<std::recursive_mutex> guard(m_mutex);
  45
  46   if (m_initialized) {
  47     Debugger::Terminate();
  48     m_initializer->Terminate();
  49
  50     m_initializer.reset();
  51     m_initialized = false;
  52   }
  53 }