67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
//===- FileEntry.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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_DEBUGINFO_GSYM_FILEENTRY_H
|
|
#define LLVM_DEBUGINFO_GSYM_FILEENTRY_H
|
|
|
|
#include "llvm/ADT/DenseMapInfo.h"
|
|
#include "llvm/ADT/Hashing.h"
|
|
#include "llvm/DebugInfo/GSYM/GsymTypes.h"
|
|
#include <functional>
|
|
#include <stdint.h>
|
|
|
|
namespace llvm {
|
|
namespace gsym {
|
|
|
|
/// Files in GSYM are contained in FileEntry structs where we split the
|
|
/// directory and basename into two different strings in the string
|
|
/// table. This allows paths to shared commont directory and filename
|
|
/// strings and saves space.
|
|
struct FileEntry {
|
|
|
|
/// Offsets in the string table.
|
|
/// @{
|
|
gsym_strp_t Dir = 0;
|
|
gsym_strp_t Base = 0;
|
|
/// @}
|
|
|
|
FileEntry() = default;
|
|
FileEntry(gsym_strp_t D, gsym_strp_t B) : Dir(D), Base(B) {}
|
|
|
|
/// Returns the on-disk encoded size of a FileEntry for the given string
|
|
/// offset size. It's different from sizeof(FileEntry) because of padding.
|
|
static constexpr uint64_t getEncodedSize(uint8_t StringOffsetSize) {
|
|
return 2 * StringOffsetSize;
|
|
}
|
|
|
|
// Implement operator== so that FileEntry can be used as key in
|
|
// unordered containers.
|
|
bool operator==(const FileEntry &RHS) const {
|
|
return Base == RHS.Base && Dir == RHS.Dir;
|
|
};
|
|
bool operator!=(const FileEntry &RHS) const {
|
|
return Base != RHS.Base || Dir != RHS.Dir;
|
|
};
|
|
};
|
|
|
|
} // namespace gsym
|
|
|
|
template <> struct DenseMapInfo<gsym::FileEntry> {
|
|
static unsigned getHashValue(const gsym::FileEntry &Val) {
|
|
return llvm::hash_combine(
|
|
DenseMapInfo<gsym::gsym_strp_t>::getHashValue(Val.Dir),
|
|
DenseMapInfo<gsym::gsym_strp_t>::getHashValue(Val.Base));
|
|
}
|
|
static bool isEqual(const gsym::FileEntry &LHS, const gsym::FileEntry &RHS) {
|
|
return LHS == RHS;
|
|
}
|
|
};
|
|
|
|
} // namespace llvm
|
|
#endif // LLVM_DEBUGINFO_GSYM_FILEENTRY_H
|