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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_utils.h

//===-- xray_utils.h --------------------------------------------*- C++ -*-===//
//
// 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 dynamic runtime instrumentation system.
//
// Some shared utilities for the XRay runtime implementation.
//
//===----------------------------------------------------------------------===//
#ifndef XRAY_UTILS_H
#define XRAY_UTILS_H

#include <cstddef>
#include <cstdint>
#include <sys/types.h>
#include <utility>

#include "sanitizer_common/sanitizer_common.h"
#if SANITIZER_FUCHSIA
#include <zircon/types.h>
#endif

namespace __xray {

class LogWriter {
public:
#if SANITIZER_FUCHSIA
 LogWriter(zx_handle_t Vmo) : Vmo(Vmo) {}
#else
  explicit LogWriter(int Fd) : Fd(Fd) {}
#endif
 ~LogWriter();

// Write a character range into a log.
 void WriteAll(const char *Begin, const char *End);

void Flush();

// Returns a new log instance initialized using the flag-provided values.
 static LogWriter *Open();
 // Closes and deallocates the log instance.
 static void Close(LogWriter *LogWriter);

private:
#if SANITIZER_FUCHSIA
 zx_handle_t Vmo = ZX_HANDLE_INVALID;
 uint64_t Offset = 0;
#else
 int Fd = -1;
#endif
};

constexpr size_t gcd(size_t a, size_t b) {
  return (b == 0) ? a : gcd(b, a % b);
}

constexpr size_t lcm(size_t a, size_t b) { return a * b / gcd(a, b); }

constexpr size_t nearest_boundary(size_t number, size_t multiple) {
  return multiple * ((number / multiple) + (number % multiple ? 1 : 0));
}

constexpr size_t next_pow2_helper(size_t num, size_t acc) {
  return (1u << acc) >= num ? (1u << acc) : next_pow2_helper(num, acc + 1);
}

constexpr size_t next_pow2(size_t number) {
  return next_pow2_helper(number, 1);
}

template <class T> constexpr T &max(T &A, T &B) { return A > B ? A : B; }

template <class T> constexpr T &min(T &A, T &B) { return A <= B ? A : B; }

constexpr ptrdiff_t diff(uintptr_t A, uintptr_t B) {
  return max(A, B) - min(A, B);
}

} // namespace __xray

#endif // XRAY_UTILS_H

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