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//===-- ThreadsRequestHandler.cpp -----------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "DAP.h"
#include "EventHelper.h"
#include "Protocol/ProtocolRequests.h"
#include "ProtocolUtils.h"
#include "RequestHandler.h"
#include "lldb/API/SBDebugger.h"
#include "lldb/API/SBDefines.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
using namespace lldb_dap::protocol;
namespace lldb_dap {
/// The request retrieves a list of all threads.
Expected<ThreadsResponseBody>
ThreadsRequestHandler::Run(const ThreadsArguments &) const {
lldb::SBProcess process = dap.target.GetProcess();
std::vector<Thread> threads;
// Client requests the baseline of currently existing threads after
// a successful launch or attach by sending a 'threads' request
// right after receiving the configurationDone response.
// If no thread has reported to the client, it prevents something
// like the pause request from working in the running state.
// Return the cache of initial threads as the process might have resumed
if (!dap.initial_thread_list.empty()) {
threads = dap.initial_thread_list;
dap.initial_thread_list.clear();
} else {
if (!lldb::SBDebugger::StateIsStoppedState(process.GetState()))
return make_error<NotStoppedError>();
threads = GetThreads(process, dap.thread_format);
}
if (threads.size() == 0)
return make_error<DAPError>("failed to retrieve threads from process");
return ThreadsResponseBody{threads};
}
} // namespace lldb_dap
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