1f56f7fc16
We have two different "process trace" implementations: per thread and per core. As a way to simplify the collector who uses both, I'm creating a base abstract class that is used by these implementations. This effectively simplify a good chunk of code. Differential Revision: https://reviews.llvm.org/D125503
70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
//===-- IntelPTPerThreadProcessTrace.cpp ----------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "IntelPTPerThreadProcessTrace.h"
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using namespace lldb;
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using namespace lldb_private;
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using namespace process_linux;
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using namespace llvm;
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bool IntelPTPerThreadProcessTrace::TracesThread(lldb::tid_t tid) const {
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return m_thread_traces.TracesThread(tid);
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}
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Error IntelPTPerThreadProcessTrace::TraceStop(lldb::tid_t tid) {
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return m_thread_traces.TraceStop(tid);
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}
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Error IntelPTPerThreadProcessTrace::TraceStart(lldb::tid_t tid) {
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if (m_thread_traces.GetTotalBufferSize() +
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m_tracing_params.trace_buffer_size >
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static_cast<size_t>(*m_tracing_params.process_buffer_size_limit))
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return createStringError(
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inconvertibleErrorCode(),
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"Thread %" PRIu64 " can't be traced as the process trace size limit "
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"has been reached. Consider retracing with a higher "
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"limit.",
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tid);
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return m_thread_traces.TraceStart(tid, m_tracing_params);
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}
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TraceGetStateResponse IntelPTPerThreadProcessTrace::GetState() {
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TraceGetStateResponse state;
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m_thread_traces.ForEachThread(
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[&](lldb::tid_t tid, const IntelPTSingleBufferTrace &thread_trace) {
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state.traced_threads.push_back({tid,
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{{IntelPTDataKinds::kTraceBuffer,
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thread_trace.GetTraceBufferSize()}}});
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});
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return state;
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}
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Expected<std::vector<uint8_t>> IntelPTPerThreadProcessTrace::GetBinaryData(
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const TraceGetBinaryDataRequest &request) {
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if (Expected<IntelPTSingleBufferTrace &> trace =
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m_thread_traces.GetTracedThread(*request.tid))
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return trace->GetTraceBuffer(request.offset, request.size);
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else
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return trace.takeError();
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}
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Expected<IntelPTProcessTraceUP>
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IntelPTPerThreadProcessTrace::Start(const TraceIntelPTStartRequest &request,
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ArrayRef<lldb::tid_t> current_tids) {
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IntelPTProcessTraceUP trace(new IntelPTPerThreadProcessTrace(request));
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Error error = Error::success();
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for (lldb::tid_t tid : current_tids)
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error = joinErrors(std::move(error), trace->TraceStart(tid));
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if (error)
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return std::move(error);
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return trace;
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}
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