| 1 | //===-- ThreadsRequestHandler.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 "DAP.h" |
| 10 | #include "EventHelper.h" |
| 11 | #include "Protocol/ProtocolRequests.h" |
| 12 | #include "ProtocolUtils.h" |
| 13 | #include "RequestHandler.h" |
| 14 | #include "lldb/API/SBDebugger.h" |
| 15 | #include "lldb/API/SBDefines.h" |
| 16 | #include "llvm/Support/Error.h" |
| 17 | #include "llvm/Support/raw_ostream.h" |
| 18 | |
| 19 | using namespace llvm; |
| 20 | using namespace lldb_dap::protocol; |
| 21 | |
| 22 | namespace lldb_dap { |
| 23 | |
| 24 | /// The request retrieves a list of all threads. |
| 25 | Expected<ThreadsResponseBody> |
| 26 | ThreadsRequestHandler::Run(const ThreadsArguments &) const { |
| 27 | lldb::SBProcess process = dap.target.GetProcess(); |
| 28 | std::vector<Thread> threads; |
| 29 | |
| 30 | // Client requests the baseline of currently existing threads after |
| 31 | // a successful launch or attach by sending a 'threads' request |
| 32 | // right after receiving the configurationDone response. |
| 33 | // If no thread has reported to the client, it prevents something |
| 34 | // like the pause request from working in the running state. |
| 35 | // Return the cache of initial threads as the process might have resumed |
| 36 | if (!dap.initial_thread_list.empty()) { |
| 37 | threads = dap.initial_thread_list; |
| 38 | dap.initial_thread_list.clear(); |
| 39 | } else { |
| 40 | if (!lldb::SBDebugger::StateIsStoppedState(state: process.GetState())) |
| 41 | return make_error<NotStoppedError>(); |
| 42 | |
| 43 | threads = GetThreads(process, format&: dap.thread_format); |
| 44 | } |
| 45 | |
| 46 | if (threads.size() == 0) |
| 47 | return make_error<DAPError>(Args: "failed to retrieve threads from process"); |
| 48 | |
| 49 | return ThreadsResponseBody{.threads: threads}; |
| 50 | } |
| 51 | |
| 52 | } // namespace lldb_dap |
| 53 |