68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
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//===- FileEntry.h ----------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_DEBUGINFO_GSYM_FILEENTRY_H
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#define LLVM_DEBUGINFO_GSYM_FILEENTRY_H
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#include "llvm/ADT/DenseMapInfo.h"
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#include "llvm/ADT/Hashing.h"
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#include <functional>
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#include <stdint.h>
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#include <utility>
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namespace llvm {
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namespace gsym {
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/// Files in GSYM are contained in FileEntry structs where we split the
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/// directory and basename into two different strings in the string
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/// table. This allows paths to shared commont directory and filename
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/// strings and saves space.
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struct FileEntry {
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/// Offsets in the string table.
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/// @{
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uint32_t Dir = 0;
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uint32_t Base = 0;
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/// @}
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FileEntry() = default;
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FileEntry(uint32_t D, uint32_t B) : Dir(D), Base(B) {}
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// Implement operator== so that FileEntry can be used as key in
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// unordered containers.
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bool operator==(const FileEntry &RHS) const {
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return Base == RHS.Base && Dir == RHS.Dir;
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};
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bool operator!=(const FileEntry &RHS) const {
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return Base != RHS.Base || Dir != RHS.Dir;
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};
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};
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} // namespace gsym
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template <> struct DenseMapInfo<gsym::FileEntry> {
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static inline gsym::FileEntry getEmptyKey() {
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uint32_t key = DenseMapInfo<uint32_t>::getEmptyKey();
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return gsym::FileEntry(key, key);
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}
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static inline gsym::FileEntry getTombstoneKey() {
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uint32_t key = DenseMapInfo<uint32_t>::getTombstoneKey();
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return gsym::FileEntry(key, key);
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}
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static unsigned getHashValue(const gsym::FileEntry &Val) {
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return llvm::hash_combine(DenseMapInfo<uint32_t>::getHashValue(Val.Dir),
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DenseMapInfo<uint32_t>::getHashValue(Val.Base));
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}
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static bool isEqual(const gsym::FileEntry &LHS, const gsym::FileEntry &RHS) {
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return LHS == RHS;
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}
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};
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} // namespace llvm
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#endif // #ifndef LLVM_DEBUGINFO_GSYM_FILEENTRY_H
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