diff options
author | Brian Smith <brian@dbsoft.org> | 2022-09-04 23:05:10 -0500 |
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committer | Brian Smith <brian@dbsoft.org> | 2022-09-04 23:05:10 -0500 |
commit | f369fbd6f7d2b0c74d482511bb16afbfc7856d11 (patch) | |
tree | 336e03f28773c2d0cfe8c28d0b888e834bfd2008 /ipc/chromium/src/base/hash_tables.h | |
parent | 2db2e0fe58c8c844896541ce892695ee9b1c1452 (diff) | |
download | uxp-f369fbd6f7d2b0c74d482511bb16afbfc7856d11.tar.gz |
Issue #2000 - Stop using deprecated ext/hash_map.
This has been long deprecated in favor of std::unsorted_map. Since all platforms
are using modern compilers now it should not be a problem to switch over to
std::unsorted_map in the single place hash_map is used. This allows us to build
on platforms which have removed hash_map such as FreeBSD.
Diffstat (limited to 'ipc/chromium/src/base/hash_tables.h')
-rw-r--r-- | ipc/chromium/src/base/hash_tables.h | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/ipc/chromium/src/base/hash_tables.h b/ipc/chromium/src/base/hash_tables.h deleted file mode 100644 index 1df618f43e..0000000000 --- a/ipc/chromium/src/base/hash_tables.h +++ /dev/null @@ -1,111 +0,0 @@ -/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ -// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. -// - -// -// Deal with the differences between Microsoft and GNU implemenations -// of hash_map. Allows all platforms to use |base::hash_map| and -// |base::hash_set|. -// eg: -// base::hash_map<int> my_map; -// base::hash_set<int> my_set; -// - -#ifndef BASE_HASH_TABLES_H_ -#define BASE_HASH_TABLES_H_ - -#include "build/build_config.h" - -#include "base/string16.h" - -#if defined(COMPILER_MSVC) -#pragma push_macro("_SILENCE_STDEXT_HASH_DEPRECATION_WARNINGS") -#define _SILENCE_STDEXT_HASH_DEPRECATION_WARNINGS - -#include <hash_map> -#include <hash_set> - -#pragma pop_macro("_SILENCE_STDEXT_HASH_DEPRECATION_WARNINGS") - -namespace base { -using stdext::hash_map; -using stdext::hash_set; -} -#elif defined(COMPILER_GCC) -// This is a hack to disable the gcc 4.4 warning about hash_map and hash_set -// being deprecated. We can get rid of this when we upgrade to VS2008 and we -// can use <tr1/unordered_map> and <tr1/unordered_set>. -#ifdef __DEPRECATED -#define CHROME_OLD__DEPRECATED __DEPRECATED -#undef __DEPRECATED -#endif - -#include <ext/hash_map> -#include <ext/hash_set> -#include <string> - -#ifdef CHROME_OLD__DEPRECATED -#define __DEPRECATED CHROME_OLD__DEPRECATED -#undef CHROME_OLD__DEPRECATED -#endif - -namespace base { -using __gnu_cxx::hash_map; -using __gnu_cxx::hash_set; -} // namespace base - -namespace __gnu_cxx { - -// The GNU C++ library provides identiy hash functions for many integral types, -// but not for |long long|. This hash function will truncate if |size_t| is -// narrower than |long long|. This is probably good enough for what we will -// use it for. - -#define DEFINE_TRIVIAL_HASH(integral_type) \ - template<> \ - struct hash<integral_type> { \ - std::size_t operator()(integral_type value) const { \ - return static_cast<std::size_t>(value); \ - } \ - } - -DEFINE_TRIVIAL_HASH(long long); -DEFINE_TRIVIAL_HASH(unsigned long long); - -#undef DEFINE_TRIVIAL_HASH - -// Implement string hash functions so that strings of various flavors can -// be used as keys in STL maps and sets. The hash algorithm comes from the -// GNU C++ library, in <tr1/functional>. It is duplicated here because GCC -// versions prior to 4.3.2 are unable to compile <tr1/functional> when RTTI -// is disabled, as it is in our build. - -#define DEFINE_STRING_HASH(string_type) \ - template<> \ - struct hash<string_type> { \ - std::size_t operator()(const string_type& s) const { \ - std::size_t result = 0; \ - for (string_type::const_iterator i = s.begin(); i != s.end(); ++i) \ - result = (result * 131) + *i; \ - return result; \ - } \ - } - -DEFINE_STRING_HASH(std::string); -DEFINE_STRING_HASH(std::wstring); - -#if defined(WCHAR_T_IS_UTF32) -// If string16 and std::wstring are not the same type, provide a -// specialization for string16. -DEFINE_STRING_HASH(string16); -#endif // WCHAR_T_IS_UTF32 - -#undef DEFINE_STRING_HASH - -} // namespace __gnu_cxx - -#endif // COMPILER - -#endif // BASE_HASH_TABLES_H_ |