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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- BlockVerifier.h - FDR Block Verifier -------------------------------===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // An implementation of the RecordVisitor which verifies a sequence of records |
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| 10 | // associated with a block, following the FDR mode log format's specifications. |
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| 11 | // |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | #ifndef LLVM_XRAY_BLOCKVERIFIER_H |
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| 14 | #define LLVM_XRAY_BLOCKVERIFIER_H |
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| 15 | |||
| 16 | #include "llvm/XRay/FDRRecords.h" |
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| 17 | #include <array> |
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| 18 | #include <bitset> |
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| 19 | |||
| 20 | namespace llvm { |
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| 21 | namespace xray { |
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| 22 | |||
| 23 | class BlockVerifier : public RecordVisitor { |
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| 24 | public: |
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| 25 | // We force State elements to be size_t, to be used as indices for containers. |
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| 26 | enum class State : std::size_t { |
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| 27 | Unknown, |
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| 28 | BufferExtents, |
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| 29 | NewBuffer, |
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| 30 | WallClockTime, |
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| 31 | PIDEntry, |
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| 32 | NewCPUId, |
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| 33 | TSCWrap, |
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| 34 | CustomEvent, |
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| 35 | TypedEvent, |
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| 36 | Function, |
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| 37 | CallArg, |
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| 38 | EndOfBuffer, |
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| 39 | StateMax, |
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| 40 | }; |
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| 41 | |||
| 42 | private: |
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| 43 | // We keep track of the current record seen by the verifier. |
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| 44 | State CurrentRecord = State::Unknown; |
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| 45 | |||
| 46 | // Transitions the current record to the new record, records an error on |
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| 47 | // invalid transitions. |
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| 48 | Error transition(State To); |
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| 49 | |||
| 50 | public: |
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| 51 | Error visit(BufferExtents &) override; |
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| 52 | Error visit(WallclockRecord &) override; |
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| 53 | Error visit(NewCPUIDRecord &) override; |
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| 54 | Error visit(TSCWrapRecord &) override; |
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| 55 | Error visit(CustomEventRecord &) override; |
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| 56 | Error visit(CallArgRecord &) override; |
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| 57 | Error visit(PIDRecord &) override; |
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| 58 | Error visit(NewBufferRecord &) override; |
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| 59 | Error visit(EndBufferRecord &) override; |
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| 60 | Error visit(FunctionRecord &) override; |
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| 61 | Error visit(CustomEventRecordV5 &) override; |
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| 62 | Error visit(TypedEventRecord &) override; |
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| 63 | |||
| 64 | Error verify(); |
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| 65 | void reset(); |
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| 66 | }; |
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| 67 | |||
| 68 | } // namespace xray |
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| 69 | } // namespace llvm |
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| 70 | |||
| 71 | #endif // LLVM_XRAY_BLOCKVERIFIER_H |