contrib/llvm/include/llvm/XRay/BlockPrinter.h

   1 //===- BlockPrinter.h - FDR Block Pretty Printer -------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // An implementation of the RecordVisitor which formats a block of records for
  11 // easier human consumption.
  12 //
  13 //===----------------------------------------------------------------------===//
  14 #ifndef LLVM_INCLUDE_LLVM_XRAY_BLOCKPRINTER_H_
  15 #define LLVM_INCLUDE_LLVM_XRAY_BLOCKPRINTER_H_
  16
  17 #include "llvm/Support/raw_ostream.h"
  18 #include "llvm/XRay/FDRRecords.h"
  19 #include "llvm/XRay/RecordPrinter.h"
  20
  21 namespace llvm {
  22 namespace xray {
  23
  24 class BlockPrinter : public RecordVisitor {
  25   enum class State {
  26     Start,
  27     Preamble,
  28     Metadata,
  29     Function,
  30     Arg,
  31     CustomEvent,
  32     End,
  33   };
  34
  35   raw_ostream &OS;
  36   RecordPrinter &RP;
  37   State CurrentState = State::Start;
  38
  39 public:
  40   explicit BlockPrinter(raw_ostream &O, RecordPrinter &P)
  41       : RecordVisitor(), OS(O), RP(P) {}
  42
  43   Error visit(BufferExtents &) override;
  44   Error visit(WallclockRecord &) override;
  45   Error visit(NewCPUIDRecord &) override;
  46   Error visit(TSCWrapRecord &) override;
  47   Error visit(CustomEventRecord &) override;
  48   Error visit(CallArgRecord &) override;
  49   Error visit(PIDRecord &) override;
  50   Error visit(NewBufferRecord &) override;
  51   Error visit(EndBufferRecord &) override;
  52   Error visit(FunctionRecord &) override;
  53   Error visit(CustomEventRecordV5 &) override;
  54   Error visit(TypedEventRecord &) override;
  55
  56   void reset() { CurrentState = State::Start; }
  57 };
  58
  59 } // namespace xray
  60 } // namespace llvm
  61
  62 #endif // LLVM_INCLUDE_LLVM_XRAY_BLOCKPRINTER_H_