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- #pragma once
- #ifdef __GNUC__
- #pragma GCC diagnostic push
- #pragma GCC diagnostic ignored "-Wunused-parameter"
- #endif
- //===- 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_
- #ifdef __GNUC__
- #pragma GCC diagnostic pop
- #endif
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