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d9e9a38395
Summary: This change updates the version number for FDR logs to 5, and update the trace processing to support changes in the custom event records. In the runtime, since we're already writing down the record preamble to handle CPU migrations and TSC wraparound, we can use the same TSC delta encoding in the custom event and typed event records that we use in function event records. We do the same change to typed events (which were unsupported before this change in the trace processing) which now show up in the trace. Future changes should increase our testing coverage to make custom and typed events as first class entities in the FDR mode log processing tools. This change is also a good example of how we end up supporting new record types in the FDR mode implementation. This shows the places where new record types are added and supported. Depends on D54139. Reviewers: mboerger Subscribers: hiraditya, arphaman, jfb, llvm-commits Differential Revision: https://reviews.llvm.org/D54140 llvm-svn: 346293
57 lines
2.0 KiB
C++
57 lines
2.0 KiB
C++
//===- FDRTraceWriter.h - XRay FDR Trace Writer -----------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Test a utility that can write out XRay FDR Mode formatted trace files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_INCLUDE_LLVM_XRAY_FDRTRACEWRITER_H_
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#define LLVM_INCLUDE_LLVM_XRAY_FDRTRACEWRITER_H_
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Support/EndianStream.h"
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#include "llvm/XRay/FDRRecords.h"
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#include "llvm/XRay/XRayRecord.h"
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namespace llvm {
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namespace xray {
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/// The FDRTraceWriter allows us to hand-craft an XRay Flight Data Recorder
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/// (FDR) mode log file. This is used primarily for testing, generating
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/// sequences of FDR records that can be read/processed. It can also be used to
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/// generate various kinds of execution traces without using the XRay runtime.
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/// Note that this writer does not do any validation, but uses the types of
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/// records defined in the FDRRecords.h file.
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class FDRTraceWriter : public RecordVisitor {
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public:
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// Construct an FDRTraceWriter associated with an output stream.
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explicit FDRTraceWriter(raw_ostream &O, const XRayFileHeader &H);
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~FDRTraceWriter();
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Error visit(BufferExtents &) override;
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Error visit(WallclockRecord &) override;
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Error visit(NewCPUIDRecord &) override;
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Error visit(TSCWrapRecord &) override;
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Error visit(CustomEventRecord &) override;
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Error visit(CallArgRecord &) override;
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Error visit(PIDRecord &) override;
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Error visit(NewBufferRecord &) override;
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Error visit(EndBufferRecord &) override;
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Error visit(FunctionRecord &) override;
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Error visit(CustomEventRecordV5 &) override;
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Error visit(TypedEventRecord &) override;
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private:
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support::endian::Writer OS;
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};
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} // namespace xray
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} // namespace llvm
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#endif // LLVM_INCLUDE_LLVM_XRAY_FDRTRACEWRITER_H_
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