File indexing completed on 2024-05-19 05:44:09
0001 /* 0002 Copyright (C) 2015 Volker Krause <vkrause@kde.org> 0003 0004 This program is free software; you can redistribute it and/or modify it 0005 under the terms of the GNU Library General Public License as published by 0006 the Free Software Foundation; either version 2 of the License, or (at your 0007 option) any later version. 0008 0009 This program is distributed in the hope that it will be useful, but WITHOUT 0010 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0011 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public 0012 License for more details. 0013 0014 You should have received a copy of the GNU General Public License 0015 along with this program. If not, see <https://www.gnu.org/licenses/>. 0016 */ 0017 0018 #ifndef ELFHASHSECTION_H 0019 #define ELFHASHSECTION_H 0020 0021 #include "elfsection.h" 0022 0023 #include <QVector> 0024 0025 class ElfSymbolTableEntry; 0026 0027 /** Interface for hash table sections for symbol lookup. */ 0028 class ElfHashSection : public ElfSection 0029 { 0030 public: 0031 ElfHashSection(ElfFile* file, ElfSectionHeader* shdr); 0032 ~ElfHashSection(); 0033 0034 virtual uint32_t bucketCount() const = 0; 0035 virtual uint32_t chainCount() const = 0; 0036 0037 virtual ElfSymbolTableEntry *lookup(const char* name) const = 0; 0038 0039 /** Histogram of the hash chain lengths. */ 0040 virtual QVector<uint32_t> histogram() const = 0; 0041 /** Average length of common prefixes in case of hash collisions. */ 0042 virtual double averagePrefixLength() const = 0; 0043 0044 protected: 0045 static int commonPrefixLength(const char *s1, const char *s2); 0046 }; 0047 0048 #endif // ELFHASHSECTION_H