a758205951
- Add collection of context switches per cpu grouped with the per-cpu intel pt traces. - Move the state handling from the interl pt trace class to the PerfEvent one. - Add support for stopping and enabling perf event groups. - Return context switch entries as part of the jLLDBTraceGetState response. - Move the triggers of whenever the process stopped or resumed. Now the will-resume notification is in a better location, which will ensure that we'll capture the instructions that will be executed. - Remove IntelPTSingleBufferTraceUP. The unique pointer was useless. - Add unit tests Differential Revision: https://reviews.llvm.org/D125897
74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
//===-- IntelPTThreadTraceCollection.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 "IntelPTThreadTraceCollection.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 IntelPTThreadTraceCollection::TracesThread(lldb::tid_t tid) const {
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return m_thread_traces.count(tid);
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}
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Error IntelPTThreadTraceCollection::TraceStop(lldb::tid_t tid) {
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auto it = m_thread_traces.find(tid);
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if (it == m_thread_traces.end())
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return createStringError(inconvertibleErrorCode(),
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"Thread %" PRIu64 " not currently traced", tid);
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m_total_buffer_size -= it->second.GetTraceBufferSize();
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m_thread_traces.erase(tid);
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return Error::success();
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}
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Error IntelPTThreadTraceCollection::TraceStart(
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lldb::tid_t tid, const TraceIntelPTStartRequest &request) {
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if (TracesThread(tid))
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return createStringError(inconvertibleErrorCode(),
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"Thread %" PRIu64 " already traced", tid);
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Expected<IntelPTSingleBufferTrace> trace =
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IntelPTSingleBufferTrace::Start(request, tid);
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if (!trace)
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return trace.takeError();
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m_total_buffer_size += trace->GetTraceBufferSize();
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m_thread_traces.try_emplace(tid, std::move(*trace));
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return Error::success();
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}
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size_t IntelPTThreadTraceCollection::GetTotalBufferSize() const {
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return m_total_buffer_size;
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}
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void IntelPTThreadTraceCollection::ForEachThread(
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std::function<void(lldb::tid_t tid, IntelPTSingleBufferTrace &thread_trace)>
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callback) {
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for (auto &it : m_thread_traces)
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callback(it.first, it.second);
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}
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Expected<IntelPTSingleBufferTrace &>
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IntelPTThreadTraceCollection::GetTracedThread(lldb::tid_t tid) {
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auto it = m_thread_traces.find(tid);
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if (it == m_thread_traces.end())
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return createStringError(inconvertibleErrorCode(),
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"Thread %" PRIu64 " not currently traced", tid);
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return it->second;
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}
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void IntelPTThreadTraceCollection::Clear() {
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m_thread_traces.clear();
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m_total_buffer_size = 0;
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}
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size_t IntelPTThreadTraceCollection::GetTracedThreadsCount() const {
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return m_thread_traces.size();
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}
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