51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
|
//===- FDRRecordProducer.h - XRay FDR Mode Record Producer ----------------===//
|
||
|
|
//
|
||
|
|
// 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
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
#ifndef LLVM_INCLUDE_LLVM_XRAY_FDRRECORDPRODUCER_H_
|
||
|
|
#define LLVM_INCLUDE_LLVM_XRAY_FDRRECORDPRODUCER_H_
|
||
|
|
|
||
|
|
#include "llvm/Support/Error.h"
|
||
|
|
#include "llvm/XRay/FDRRecords.h"
|
||
|
|
#include "llvm/XRay/XRayRecord.h"
|
||
|
|
#include <memory>
|
||
|
|
|
||
|
|
namespace llvm {
|
||
|
|
namespace xray {
|
||
|
|
|
||
|
|
class RecordProducer {
|
||
|
|
public:
|
||
|
|
/// All producer implementations must yield either an Error or a non-nullptr
|
||
|
|
/// unique_ptr<Record>.
|
||
|
|
virtual Expected<std::unique_ptr<Record>> produce() = 0;
|
||
|
|
virtual ~RecordProducer() = default;
|
||
|
|
};
|
||
|
|
|
||
|
|
class FileBasedRecordProducer : public RecordProducer {
|
||
|
|
const XRayFileHeader &Header;
|
||
|
|
DataExtractor &E;
|
||
|
|
uint64_t &OffsetPtr;
|
||
|
|
uint32_t CurrentBufferBytes = 0;
|
||
|
|
|
||
|
|
// Helper function which gets the next record by speculatively reading through
|
||
|
|
// the log, finding a buffer extents record.
|
||
|
|
Expected<std::unique_ptr<Record>> findNextBufferExtent();
|
||
|
|
|
||
|
|
public:
|
||
|
|
FileBasedRecordProducer(const XRayFileHeader &FH, DataExtractor &DE,
|
||
|
|
uint64_t &OP)
|
||
|
|
: Header(FH), E(DE), OffsetPtr(OP) {}
|
||
|
|
|
||
|
|
/// This producer encapsulates the logic for loading a File-backed
|
||
|
|
/// RecordProducer hidden behind a DataExtractor.
|
||
|
|
Expected<std::unique_ptr<Record>> produce() override;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace xray
|
||
|
|
} // namespace llvm
|
||
|
|
|
||
|
|
#endif // LLVM_INCLUDE_LLVM_XRAY_FDRRECORDPRODUCER_H_
|