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📄 weak_symbols.txt(88 B)
📄 xray_AArch64.cpp(4.62 KB)
📄 xray_allocator.h(9.33 KB)
📄 xray_always_instrument.txt(255 B)
📄 xray_arm.cpp(5.87 KB)
📄 xray_basic_flags.cpp(1.52 KB)
📄 xray_basic_flags.h(1.18 KB)
📄 xray_basic_flags.inc(1011 B)
📄 xray_basic_logging.cpp(17.59 KB)
📄 xray_basic_logging.h(1.68 KB)
📄 xray_buffer_queue.cpp(7.35 KB)
📄 xray_buffer_queue.h(8.79 KB)
📄 xray_defs.h(967 B)
📄 xray_fdr_controller.h(11.79 KB)
📄 xray_fdr_flags.cpp(1.47 KB)
📄 xray_fdr_flags.h(1.2 KB)
📄 xray_fdr_flags.inc(1.28 KB)
📄 xray_fdr_log_records.h(2.5 KB)
📄 xray_fdr_log_writer.h(8.72 KB)
📄 xray_fdr_logging.cpp(27.62 KB)
📄 xray_fdr_logging.h(1.53 KB)
📄 xray_flags.cpp(2.76 KB)
📄 xray_flags.h(1.12 KB)
📄 xray_flags.inc(2.29 KB)
📄 xray_function_call_trie.h(22.36 KB)
📄 xray_init.cpp(4.6 KB)
📄 xray_interface.cpp(16.43 KB)
📄 xray_interface_internal.h(3.2 KB)
📄 xray_log_interface.cpp(7.53 KB)
📄 xray_mips.cpp(7.16 KB)
📄 xray_mips64.cpp(7.66 KB)
📄 xray_never_instrument.txt(282 B)
📄 xray_powerpc64.cpp(3.63 KB)
📄 xray_powerpc64.inc(1019 B)
📄 xray_profile_collector.cpp(14.06 KB)
📄 xray_profile_collector.h(2.73 KB)
📄 xray_profiling.cpp(17.55 KB)
📄 xray_profiling_flags.cpp(1.34 KB)
📄 xray_profiling_flags.h(1.17 KB)
📄 xray_profiling_flags.inc(1.4 KB)
📄 xray_recursion_guard.h(1.8 KB)
📄 xray_segmented_array.h(21.22 KB)
📄 xray_trampoline_AArch64.S(6.1 KB)
📄 xray_trampoline_arm.S(3.85 KB)
📄 xray_trampoline_mips.S(2.67 KB)
📄 xray_trampoline_mips64.S(3.47 KB)
📄 xray_trampoline_powerpc64.cpp(420 B)
📄 xray_trampoline_powerpc64_asm.S(3.91 KB)
📄 xray_trampoline_x86_64.S(7.06 KB)
📄 xray_tsc.h(2.75 KB)
📄 xray_utils.cpp(6.04 KB)
📄 xray_utils.h(2.18 KB)
📄 xray_x86_64.cpp(11.73 KB)
📄 xray_x86_64.inc(997 B)

Editing: xray_fdr_log_records.h

//===-- xray_fdr_log_records.h  -------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file is a part of XRay, a function call tracing system.
//
//===----------------------------------------------------------------------===//
#ifndef XRAY_XRAY_FDR_LOG_RECORDS_H
#define XRAY_XRAY_FDR_LOG_RECORDS_H
#include <cstdint>

namespace __xray {

enum class RecordType : uint8_t { Function, Metadata };

// A MetadataRecord encodes the kind of record in its first byte, and have 15
// additional bytes in the end to hold free-form data.
struct alignas(16) MetadataRecord {
  // A MetadataRecord must always have a type of 1.
  /* RecordType */ uint8_t Type : 1;

// Each kind of record is represented as a 7-bit value (even though we use an
  // unsigned 8-bit enum class to do so).
  enum class RecordKinds : uint8_t {
    NewBuffer,
    EndOfBuffer,
    NewCPUId,
    TSCWrap,
    WalltimeMarker,
    CustomEventMarker,
    CallArgument,
    BufferExtents,
    TypedEventMarker,
    Pid,
  };

// Use 7 bits to identify this record type.
  /* RecordKinds */ uint8_t RecordKind : 7;
  char Data[15];
} __attribute__((packed));

static_assert(sizeof(MetadataRecord) == 16, "Wrong size for MetadataRecord.");

struct alignas(8) FunctionRecord {
  // A FunctionRecord must always have a type of 0.
  /* RecordType */ uint8_t Type : 1;
  enum class RecordKinds {
    FunctionEnter = 0x00,
    FunctionExit = 0x01,
    FunctionTailExit = 0x02,
  };
  /* RecordKinds */ uint8_t RecordKind : 3;

// We only use 28 bits of the function ID, so that we can use as few bytes as
  // possible. This means we only support 2^28 (268,435,456) unique function ids
  // in a single binary.
  int FuncId : 28;

// We use another 4 bytes to hold the delta between the previous entry's TSC.
  // In case we've found that the distance is greater than the allowable 32 bits
  // (either because we are running in a different CPU and the TSC might be
  // different then), we should use a MetadataRecord before this FunctionRecord
  // that will contain the full TSC for that CPU, and keep this to 0.
  uint32_t TSCDelta;
} __attribute__((packed));

static_assert(sizeof(FunctionRecord) == 8, "Wrong size for FunctionRecord.");

} // namespace __xray

#endif // XRAY_XRAY_FDR_LOG_RECORDS_H

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