| 1 | //===-- IntelPTPerThreadProcessTrace.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 "IntelPTPerThreadProcessTrace.h" |
| 10 | #include <optional> |
| 11 | |
| 12 | using namespace lldb; |
| 13 | using namespace lldb_private; |
| 14 | using namespace process_linux; |
| 15 | using namespace llvm; |
| 16 | |
| 17 | bool IntelPTPerThreadProcessTrace::TracesThread(lldb::tid_t tid) const { |
| 18 | return m_thread_traces.TracesThread(tid); |
| 19 | } |
| 20 | |
| 21 | Error IntelPTPerThreadProcessTrace::TraceStop(lldb::tid_t tid) { |
| 22 | return m_thread_traces.TraceStop(tid); |
| 23 | } |
| 24 | |
| 25 | Error IntelPTPerThreadProcessTrace::TraceStart(lldb::tid_t tid) { |
| 26 | if (m_thread_traces.GetTotalBufferSize() + m_tracing_params.ipt_trace_size > |
| 27 | static_cast<size_t>(*m_tracing_params.process_buffer_size_limit)) |
| 28 | return createStringError( |
| 29 | EC: inconvertibleErrorCode(), |
| 30 | Fmt: "Thread %"PRIu64 " can't be traced as the process trace size limit " |
| 31 | "has been reached. Consider retracing with a higher " |
| 32 | "limit.", |
| 33 | Vals: tid); |
| 34 | |
| 35 | return m_thread_traces.TraceStart(tid, request: m_tracing_params); |
| 36 | } |
| 37 | |
| 38 | TraceIntelPTGetStateResponse IntelPTPerThreadProcessTrace::GetState() { |
| 39 | TraceIntelPTGetStateResponse state; |
| 40 | m_thread_traces.ForEachThread( |
| 41 | callback: [&](lldb::tid_t tid, const IntelPTSingleBufferTrace &thread_trace) { |
| 42 | state.traced_threads.push_back( |
| 43 | x: {.tid: tid, |
| 44 | .binary_data: {{.kind: IntelPTDataKinds::kIptTrace, .size: thread_trace.GetIptTraceSize()}}}); |
| 45 | }); |
| 46 | return state; |
| 47 | } |
| 48 | |
| 49 | Expected<std::optional<std::vector<uint8_t>>> |
| 50 | IntelPTPerThreadProcessTrace::TryGetBinaryData( |
| 51 | const TraceGetBinaryDataRequest &request) { |
| 52 | return m_thread_traces.TryGetBinaryData(request); |
| 53 | } |
| 54 | |
| 55 | Expected<std::unique_ptr<IntelPTPerThreadProcessTrace>> |
| 56 | IntelPTPerThreadProcessTrace::Start(const TraceIntelPTStartRequest &request, |
| 57 | ArrayRef<lldb::tid_t> current_tids) { |
| 58 | std::unique_ptr<IntelPTPerThreadProcessTrace> trace( |
| 59 | new IntelPTPerThreadProcessTrace(request)); |
| 60 | |
| 61 | Error error = Error::success(); |
| 62 | for (lldb::tid_t tid : current_tids) |
| 63 | error = joinErrors(E1: std::move(error), E2: trace->TraceStart(tid)); |
| 64 | if (error) |
| 65 | return std::move(error); |
| 66 | return std::move(trace); |
| 67 | } |
| 68 |