lldb/source/Symbol/SymbolLocator.cpp

   1 //===-- symbolLocator.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/Symbol/SymbolLocator.h"
  10
  11 #include "lldb/Core/Debugger.h"
  12 #include "lldb/Core/PluginManager.h"
  13 #include "lldb/Host/Host.h"
  14
  15 #include "llvm/ADT/SmallSet.h"
  16 #include "llvm/Support/ThreadPool.h"
  17
  18 using namespace lldb;
  19 using namespace lldb_private;
  20
  21 void SymbolLocator::DownloadSymbolFileAsync(const UUID &uuid) {
  22   static llvm::SmallSet<UUID, 8> g_seen_uuids;
  23   static std::mutex g_mutex;
  24
  25   auto lookup = [=]() {
  26     {
  27       std::lock_guard<std::mutex> guard(g_mutex);
  28       if (g_seen_uuids.count(uuid))
  29         return;
  30       g_seen_uuids.insert(uuid);
  31     }
  32
  33     Status error;
  34     ModuleSpec module_spec;
  35     module_spec.GetUUID() = uuid;
  36     if (!PluginManager::DownloadObjectAndSymbolFile(module_spec, error,
  37                                                     /*force_lookup=*/true,
  38                                                     /*copy_executable=*/true))
  39       return;
  40
  41     if (error.Fail())
  42       return;
  43
  44     Debugger::ReportSymbolChange(module_spec);
  45   };
  46
  47   switch (ModuleList::GetGlobalModuleListProperties().GetSymbolAutoDownload()) {
  48   case eSymbolDownloadOff:
  49     break;
  50   case eSymbolDownloadBackground:
  51     Debugger::GetThreadPool().async(lookup);
  52     break;
  53   case eSymbolDownloadForeground:
  54     lookup();
  55     break;
  56   };
  57 }