/usr/include/llvm-6.0/llvm/XRay/Trace.h is in llvm-6.0-dev 1:6.0-1ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | //===- Trace.h - XRay Trace Abstraction -----------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Defines the XRay Trace class representing records in an XRay trace file.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_XRAY_TRACE_H
#define LLVM_XRAY_TRACE_H
#include <cstdint>
#include <vector>
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/XRay/XRayRecord.h"
namespace llvm {
namespace xray {
/// A Trace object represents the records that have been loaded from XRay
/// log files generated by instrumented binaries. We encapsulate the logic of
/// reading the traces in factory functions that populate the Trace object
/// appropriately.
///
/// Trace objects provide an accessor to an XRayFileHeader which says more about
/// details of the file from which the XRay trace was loaded from.
///
/// Usage:
///
/// if (auto TraceOrErr = loadTraceFile("xray-log.something.xray")) {
/// auto& T = *TraceOrErr;
/// // T.getFileHeader() will provide information from the trace header.
/// for (const XRayRecord &R : T) {
/// // ... do something with R here.
/// }
/// } else {
/// // Handle the error here.
/// }
///
class Trace {
XRayFileHeader FileHeader;
std::vector<XRayRecord> Records;
typedef std::vector<XRayRecord>::const_iterator citerator;
friend Expected<Trace> loadTraceFile(StringRef, bool);
public:
/// Provides access to the loaded XRay trace file header.
const XRayFileHeader &getFileHeader() const { return FileHeader; }
citerator begin() const { return Records.begin(); }
citerator end() const { return Records.end(); }
size_t size() const { return Records.size(); }
};
/// This function will attempt to load XRay trace records from the provided
/// |Filename|.
Expected<Trace> loadTraceFile(StringRef Filename, bool Sort = false);
} // namespace xray
} // namespace llvm
#endif // LLVM_XRAY_TRACE_H
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