Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===- BlockIndexer.h - FDR Block Indexing Visitor ------------------------===//

//

// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

// See https://llvm.org/LICENSE.txt for license information.

// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

//

//===----------------------------------------------------------------------===//

//

// An implementation of the RecordVisitor which generates a mapping between a

// thread and a range of records representing a block.

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_XRAY_BLOCKINDEXER_H

#define LLVM_XRAY_BLOCKINDEXER_H

#include "llvm/ADT/DenseMap.h"

#include "llvm/XRay/FDRRecords.h"

#include <cstdint>

#include <vector>

namespace llvm {

namespace xray {

// The BlockIndexer will gather all related records associated with a

// process+thread and group them by 'Block'.

class BlockIndexer : public RecordVisitor {

public:

  struct Block {

    uint64_t ProcessID;

    int32_t ThreadID;

    WallclockRecord *WallclockTime;

    std::vector<Record *> Records;

  };

  // This maps the process + thread combination to a sequence of blocks.

  using Index = DenseMap<std::pair<uint64_t, int32_t>, std::vector<Block>>;

private:

  Index &Indices;

  Block CurrentBlock{0, 0, nullptr, {}};

public:

  explicit BlockIndexer(Index &I) : Indices(I) {}

  Error visit(BufferExtents &) override;

  Error visit(WallclockRecord &) override;

  Error visit(NewCPUIDRecord &) override;

  Error visit(TSCWrapRecord &) override;

  Error visit(CustomEventRecord &) override;

  Error visit(CallArgRecord &) override;

  Error visit(PIDRecord &) override;

  Error visit(NewBufferRecord &) override;

  Error visit(EndBufferRecord &) override;

  Error visit(FunctionRecord &) override;

  Error visit(CustomEventRecordV5 &) override;

  Error visit(TypedEventRecord &) override;

  /// The flush() function will clear out the current state of the visitor, to

  /// allow for explicitly flushing a block's records to the currently

  /// recognized thread and process combination.

  Error flush();

};

} // namespace xray

} // namespace llvm

#endif // LLVM_XRAY_BLOCKINDEXER_H