hash_bytes.cc: New file...
2010-09-13 Matt Austern <austern@google.com>
* src/hash_bytes.cc: New file, exports _Hash_bytes (a Murmur hash),
and _Fnv_hash_bytes (based on a FNV algorithm).
* src/compatibility-c++0x.cc (hash<string>::operator(),
hash<const string&>::operator(), hash<wstring>::operator(),
hash<const wstring&>::operator(), hash<error_code>::operator()):
Adjust, use _Hash_bytes.
* include/std/system_error (hash<error_code>::operator()): Likewise.
* include/std/thread (hash<thread::id>operator()): Likewise.
* include/std/bitset (hash<bitset>operator()): Likewise.
* include/bits/basic_string.h (hash<string>::operator(),
hash<wstring>::operator(), hash<u16string>::operator(),
hash<u32string>::operator()): Adjust.
* include/bits/vector.tcc (hash<vector<bool>>::operator()): Adjust.
* include/bits/functional_hash.h (_Hash_bytes, _Fnv_hash_bytes):
Declare.
(struct _Hash_impl, struct _Fnv_hash_impl): Add, use _Hash_bytes
and _Fnv_hash_bytes, respectively.
(hash<float>::operator(), hash<double>::operator()): Adjust.
* config/abi/pre/gnu.ver: Add exports.
* src/Makefile.am: Add.
* src/Makefile.in: Regenerate.
From-SVN: r164253
2010-09-14 02:23:56 +08:00
|
|
|
// Definition of _Hash_bytes. -*- C++ -*-
|
|
|
|
|
2011-01-15 08:27:10 +08:00
|
|
|
// Copyright (C) 2010, 2011 Free Software Foundation, Inc.
|
hash_bytes.cc: New file...
2010-09-13 Matt Austern <austern@google.com>
* src/hash_bytes.cc: New file, exports _Hash_bytes (a Murmur hash),
and _Fnv_hash_bytes (based on a FNV algorithm).
* src/compatibility-c++0x.cc (hash<string>::operator(),
hash<const string&>::operator(), hash<wstring>::operator(),
hash<const wstring&>::operator(), hash<error_code>::operator()):
Adjust, use _Hash_bytes.
* include/std/system_error (hash<error_code>::operator()): Likewise.
* include/std/thread (hash<thread::id>operator()): Likewise.
* include/std/bitset (hash<bitset>operator()): Likewise.
* include/bits/basic_string.h (hash<string>::operator(),
hash<wstring>::operator(), hash<u16string>::operator(),
hash<u32string>::operator()): Adjust.
* include/bits/vector.tcc (hash<vector<bool>>::operator()): Adjust.
* include/bits/functional_hash.h (_Hash_bytes, _Fnv_hash_bytes):
Declare.
(struct _Hash_impl, struct _Fnv_hash_impl): Add, use _Hash_bytes
and _Fnv_hash_bytes, respectively.
(hash<float>::operator(), hash<double>::operator()): Adjust.
* config/abi/pre/gnu.ver: Add exports.
* src/Makefile.am: Add.
* src/Makefile.in: Regenerate.
From-SVN: r164253
2010-09-14 02:23:56 +08:00
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|
//
|
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|
// This file is part of the GNU ISO C++ Library. This library is free
|
|
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|
// software; you can redistribute it and/or modify it under the
|
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|
|
// terms of the GNU General Public License as published by the
|
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|
// Free Software Foundation; either version 3, or (at your option)
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|
// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
|
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// Under Section 7 of GPL version 3, you are granted additional
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|
// permissions described in the GCC Runtime Library Exception, version
|
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|
// 3.1, as published by the Free Software Foundation.
|
|
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|
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|
// You should have received a copy of the GNU General Public License and
|
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|
|
// a copy of the GCC Runtime Library Exception along with this program;
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|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
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|
// <http://www.gnu.org/licenses/>.
|
|
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|
|
|
|
|
// This file defines Hash_bytes, a primitive used for defining hash
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|
// functions. Based on public domain MurmurHashUnaligned2, by Austin
|
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|
|
// Appleby. http://murmurhash.googlepages.com/
|
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|
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|
// This file also defines _Fnv_hash_bytes, another primitive with
|
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|
// exactly the same interface but using a different hash algorithm,
|
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|
|
// Fowler / Noll / Vo (FNV) Hash (type FNV-1a). The Murmur hash
|
|
|
|
// function apears to be better in both speed and hash quality, and
|
|
|
|
// FNV is provided primarily for backward compatibility.
|
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|
|
2011-01-15 08:27:10 +08:00
|
|
|
#include <bits/hash_bytes.h>
|
hash_bytes.cc: New file...
2010-09-13 Matt Austern <austern@google.com>
* src/hash_bytes.cc: New file, exports _Hash_bytes (a Murmur hash),
and _Fnv_hash_bytes (based on a FNV algorithm).
* src/compatibility-c++0x.cc (hash<string>::operator(),
hash<const string&>::operator(), hash<wstring>::operator(),
hash<const wstring&>::operator(), hash<error_code>::operator()):
Adjust, use _Hash_bytes.
* include/std/system_error (hash<error_code>::operator()): Likewise.
* include/std/thread (hash<thread::id>operator()): Likewise.
* include/std/bitset (hash<bitset>operator()): Likewise.
* include/bits/basic_string.h (hash<string>::operator(),
hash<wstring>::operator(), hash<u16string>::operator(),
hash<u32string>::operator()): Adjust.
* include/bits/vector.tcc (hash<vector<bool>>::operator()): Adjust.
* include/bits/functional_hash.h (_Hash_bytes, _Fnv_hash_bytes):
Declare.
(struct _Hash_impl, struct _Fnv_hash_impl): Add, use _Hash_bytes
and _Fnv_hash_bytes, respectively.
(hash<float>::operator(), hash<double>::operator()): Adjust.
* config/abi/pre/gnu.ver: Add exports.
* src/Makefile.am: Add.
* src/Makefile.in: Regenerate.
From-SVN: r164253
2010-09-14 02:23:56 +08:00
|
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|
|
namespace
|
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|
|
{
|
|
|
|
inline std::size_t
|
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|
|
unaligned_load(const char* p)
|
|
|
|
{
|
|
|
|
std::size_t result;
|
2010-09-22 16:19:08 +08:00
|
|
|
__builtin_memcpy(&result, p, sizeof(result));
|
hash_bytes.cc: New file...
2010-09-13 Matt Austern <austern@google.com>
* src/hash_bytes.cc: New file, exports _Hash_bytes (a Murmur hash),
and _Fnv_hash_bytes (based on a FNV algorithm).
* src/compatibility-c++0x.cc (hash<string>::operator(),
hash<const string&>::operator(), hash<wstring>::operator(),
hash<const wstring&>::operator(), hash<error_code>::operator()):
Adjust, use _Hash_bytes.
* include/std/system_error (hash<error_code>::operator()): Likewise.
* include/std/thread (hash<thread::id>operator()): Likewise.
* include/std/bitset (hash<bitset>operator()): Likewise.
* include/bits/basic_string.h (hash<string>::operator(),
hash<wstring>::operator(), hash<u16string>::operator(),
hash<u32string>::operator()): Adjust.
* include/bits/vector.tcc (hash<vector<bool>>::operator()): Adjust.
* include/bits/functional_hash.h (_Hash_bytes, _Fnv_hash_bytes):
Declare.
(struct _Hash_impl, struct _Fnv_hash_impl): Add, use _Hash_bytes
and _Fnv_hash_bytes, respectively.
(hash<float>::operator(), hash<double>::operator()): Adjust.
* config/abi/pre/gnu.ver: Add exports.
* src/Makefile.am: Add.
* src/Makefile.in: Regenerate.
From-SVN: r164253
2010-09-14 02:23:56 +08:00
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
2010-09-19 16:52:50 +08:00
|
|
|
#if __SIZEOF_SIZE_T__ == 8
|
hash_bytes.cc: New file...
2010-09-13 Matt Austern <austern@google.com>
* src/hash_bytes.cc: New file, exports _Hash_bytes (a Murmur hash),
and _Fnv_hash_bytes (based on a FNV algorithm).
* src/compatibility-c++0x.cc (hash<string>::operator(),
hash<const string&>::operator(), hash<wstring>::operator(),
hash<const wstring&>::operator(), hash<error_code>::operator()):
Adjust, use _Hash_bytes.
* include/std/system_error (hash<error_code>::operator()): Likewise.
* include/std/thread (hash<thread::id>operator()): Likewise.
* include/std/bitset (hash<bitset>operator()): Likewise.
* include/bits/basic_string.h (hash<string>::operator(),
hash<wstring>::operator(), hash<u16string>::operator(),
hash<u32string>::operator()): Adjust.
* include/bits/vector.tcc (hash<vector<bool>>::operator()): Adjust.
* include/bits/functional_hash.h (_Hash_bytes, _Fnv_hash_bytes):
Declare.
(struct _Hash_impl, struct _Fnv_hash_impl): Add, use _Hash_bytes
and _Fnv_hash_bytes, respectively.
(hash<float>::operator(), hash<double>::operator()): Adjust.
* config/abi/pre/gnu.ver: Add exports.
* src/Makefile.am: Add.
* src/Makefile.in: Regenerate.
From-SVN: r164253
2010-09-14 02:23:56 +08:00
|
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|
// Loads n bytes, where 1 <= n < 8.
|
|
|
|
inline std::size_t
|
|
|
|
load_bytes(const char* p, int n)
|
|
|
|
{
|
2010-09-22 16:19:08 +08:00
|
|
|
std::size_t result = 0;
|
hash_bytes.cc: New file...
2010-09-13 Matt Austern <austern@google.com>
* src/hash_bytes.cc: New file, exports _Hash_bytes (a Murmur hash),
and _Fnv_hash_bytes (based on a FNV algorithm).
* src/compatibility-c++0x.cc (hash<string>::operator(),
hash<const string&>::operator(), hash<wstring>::operator(),
hash<const wstring&>::operator(), hash<error_code>::operator()):
Adjust, use _Hash_bytes.
* include/std/system_error (hash<error_code>::operator()): Likewise.
* include/std/thread (hash<thread::id>operator()): Likewise.
* include/std/bitset (hash<bitset>operator()): Likewise.
* include/bits/basic_string.h (hash<string>::operator(),
hash<wstring>::operator(), hash<u16string>::operator(),
hash<u32string>::operator()): Adjust.
* include/bits/vector.tcc (hash<vector<bool>>::operator()): Adjust.
* include/bits/functional_hash.h (_Hash_bytes, _Fnv_hash_bytes):
Declare.
(struct _Hash_impl, struct _Fnv_hash_impl): Add, use _Hash_bytes
and _Fnv_hash_bytes, respectively.
(hash<float>::operator(), hash<double>::operator()): Adjust.
* config/abi/pre/gnu.ver: Add exports.
* src/Makefile.am: Add.
* src/Makefile.in: Regenerate.
From-SVN: r164253
2010-09-14 02:23:56 +08:00
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--n;
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do
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result = (result << 8) + static_cast<unsigned char>(p[n]);
|
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while (--n >= 0);
|
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return result;
|
|
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|
}
|
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inline std::size_t
|
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|
|
shift_mix(std::size_t v)
|
|
|
|
{ return v ^ (v >> 47);}
|
2010-09-19 16:52:50 +08:00
|
|
|
#endif
|
hash_bytes.cc: New file...
2010-09-13 Matt Austern <austern@google.com>
* src/hash_bytes.cc: New file, exports _Hash_bytes (a Murmur hash),
and _Fnv_hash_bytes (based on a FNV algorithm).
* src/compatibility-c++0x.cc (hash<string>::operator(),
hash<const string&>::operator(), hash<wstring>::operator(),
hash<const wstring&>::operator(), hash<error_code>::operator()):
Adjust, use _Hash_bytes.
* include/std/system_error (hash<error_code>::operator()): Likewise.
* include/std/thread (hash<thread::id>operator()): Likewise.
* include/std/bitset (hash<bitset>operator()): Likewise.
* include/bits/basic_string.h (hash<string>::operator(),
hash<wstring>::operator(), hash<u16string>::operator(),
hash<u32string>::operator()): Adjust.
* include/bits/vector.tcc (hash<vector<bool>>::operator()): Adjust.
* include/bits/functional_hash.h (_Hash_bytes, _Fnv_hash_bytes):
Declare.
(struct _Hash_impl, struct _Fnv_hash_impl): Add, use _Hash_bytes
and _Fnv_hash_bytes, respectively.
(hash<float>::operator(), hash<double>::operator()): Adjust.
* config/abi/pre/gnu.ver: Add exports.
* src/Makefile.am: Add.
* src/Makefile.in: Regenerate.
From-SVN: r164253
2010-09-14 02:23:56 +08:00
|
|
|
}
|
|
|
|
|
PR libstdc++/36104 part four
2011-01-30 Benjamin Kosnik <bkoz@redhat.com>
PR libstdc++/36104 part four
* include/bits/c++config (_GLIBCXX_STD): Remove.
(_GLIBCXX_STD_D, _GLIBCXX_PR): Now _GLIBCXX_STD_C.
(_GLIBCXX_P): Now _GLIBCXX_STD_A.
(_GLIBCXX_NAMESPACE_DEBUG, _GLIBCXX_NAMESPACE_PARALLEL,
_GLIBCXX_NAMESPACE_PROFILE, _GLIBCXX_NAMESPACE_VERSION): Remove.
(_GLIBCXX_INLINE_DEBUG, _GLIBCXX_INLINE_PARALLEL,
_GLIBCXX_INLINE_PROFILE): Remove.
(_GLIBCXX_BEGIN_NAMESPACE(X)): Remove.
(_GLIBCXX_END_NAMESPACE): Remove.
(_GLIBCXX_BEGIN_NESTED_NAMESPACE(X, Y)): Remove.
(_GLIBCXX_END_NESTED_NAMESPACE): Remove.
(_GLIBCXX_BEGIN_NAMESPACE_ALGO): Add.
(_GLIBCXX_END_NAMESPACE_ALGO): Add.
(_GLIBCXX_BEGIN_NAMESPACE_CONTAINER): Add.
(_GLIBCXX_END_NAMESPACE_CONTAINER): Add.
(_GLIBCXX_BEGIN_NAMESPACE_VERSION): Add.
(_GLIBCXX_END_NAMESPACE_VERSION): Add.
(_GLIBCXX_BEGIN_LDBL_NAMESPACE): To _GLIBCXX_BEGIN_NAMESPACE_LDBL.
(_GLIBCXX_END_LDBL_NAMESPACE): To _GLIBCXX_END_NAMESPACE_LDBL.
(_GLIBCXX_VISIBILITY_ATTR): Revert to _GLIBCXX_VISIBILITY.
* include/*: Use new macros for namespace scope.
* config/*: Same.
* src/*: Same.
* src/Makefile.am (sources): Remove debug_list.cc, add
compatibility-debug_list-2.cc.
(parallel_sources): Remove parallel_list.cc, add
compatibility-parallel_list-2.cc.
(compatibility-parallel_list-2.[o,lo]): New rule.
* src/Makefile.in: Regenerate.
* src/debug_list.cc: Remove.
* src/parallel_list.cc: Remove.
* src/compatibility-list-2.cc: New.
* src/compatibility-debug_list-2.cc: New.
* src/compatibility-parallel_list-2.cc: New.
* doc/doxygen/user.cfg.in: Adjust macros.
* testsuite/20_util/auto_ptr/assign_neg.cc: Adjust line numbers, macros.
* testsuite/20_util/declval/requirements/1_neg.cc: Same.
* testsuite/20_util/duration/requirements/typedefs_neg1.cc: Same.
* testsuite/20_util/duration/requirements/typedefs_neg2.cc: Same.
* testsuite/20_util/duration/requirements/typedefs_neg3.cc: Same.
* testsuite/20_util/forward/c_neg.cc: Same.
* testsuite/20_util/forward/f_neg.cc: Same.
* testsuite/20_util/make_signed/requirements/typedefs_neg.cc: Same.
* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc: Same.
* testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Same.
* testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Same.
* testsuite/20_util/shared_ptr/cons/43820_neg.cc: Same.
* testsuite/20_util/weak_ptr/comparison/cmp_neg.cc: Same.
* testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Same.
* testsuite/23_containers/deque/requirements/dr438/
constructor_1_neg.cc: Same.
* testsuite/23_containers/deque/requirements/dr438/
constructor_2_neg.cc: Same.
* testsuite/23_containers/deque/requirements/dr438/insert_neg.cc: Same.
* testsuite/23_containers/forward_list/capacity/1.cc: Same.
* testsuite/23_containers/forward_list/requirements/dr438/
assign_neg.cc: Same.
* testsuite/23_containers/forward_list/requirements/dr438/
constructor_1_neg.cc: Same.
* testsuite/23_containers/forward_list/requirements/dr438/
constructor_2_neg.cc: Same.
* testsuite/23_containers/forward_list/requirements/dr438/
insert_neg.cc: Same.
* testsuite/23_containers/list/capacity/29134.cc: Same.
* testsuite/23_containers/list/requirements/dr438/assign_neg.cc: Same.
* testsuite/23_containers/list/requirements/dr438/
constructor_1_neg.cc: Same.
* testsuite/23_containers/list/requirements/dr438/
constructor_2_neg.cc: Same.
* testsuite/23_containers/list/requirements/dr438/insert_neg.cc: Same.
* testsuite/23_containers/vector/bool/capacity/29134.cc: Same.
* testsuite/23_containers/vector/bool/modifiers/insert/31370.cc: Same.
* testsuite/23_containers/vector/requirements/dr438/assign_neg.cc: Same.
* testsuite/23_containers/vector/requirements/dr438/
constructor_1_neg.cc: Same.
* testsuite/23_containers/vector/requirements/dr438/
constructor_2_neg.cc: Same.
* testsuite/23_containers/vector/requirements/dr438/insert_neg.cc: Same.
* testsuite/25_algorithms/sort/35588.cc: Same.
* testsuite/27_io/ios_base/cons/assign_neg.cc: Same.
* testsuite/27_io/ios_base/cons/copy_neg.cc: Same.
* testsuite/ext/profile/mutex_extensions_neg.cc: Same.
* testsuite/ext/profile/profiler_algos.cc: Same.
* testsuite/ext/type_traits/add_unsigned_floating_neg.cc: Same.
* testsuite/ext/type_traits/add_unsigned_integer_neg.cc: Same.
* testsuite/ext/type_traits/remove_unsigned_floating_neg.cc: Same.
* testsuite/ext/type_traits/remove_unsigned_integer_neg.cc: Same.
* testsuite/tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc: Same.
From-SVN: r169421
2011-01-31 06:39:36 +08:00
|
|
|
namespace std
|
|
|
|
{
|
|
|
|
_GLIBCXX_BEGIN_NAMESPACE_VERSION
|
2011-01-15 08:27:10 +08:00
|
|
|
|
hash_bytes.cc: New file...
2010-09-13 Matt Austern <austern@google.com>
* src/hash_bytes.cc: New file, exports _Hash_bytes (a Murmur hash),
and _Fnv_hash_bytes (based on a FNV algorithm).
* src/compatibility-c++0x.cc (hash<string>::operator(),
hash<const string&>::operator(), hash<wstring>::operator(),
hash<const wstring&>::operator(), hash<error_code>::operator()):
Adjust, use _Hash_bytes.
* include/std/system_error (hash<error_code>::operator()): Likewise.
* include/std/thread (hash<thread::id>operator()): Likewise.
* include/std/bitset (hash<bitset>operator()): Likewise.
* include/bits/basic_string.h (hash<string>::operator(),
hash<wstring>::operator(), hash<u16string>::operator(),
hash<u32string>::operator()): Adjust.
* include/bits/vector.tcc (hash<vector<bool>>::operator()): Adjust.
* include/bits/functional_hash.h (_Hash_bytes, _Fnv_hash_bytes):
Declare.
(struct _Hash_impl, struct _Fnv_hash_impl): Add, use _Hash_bytes
and _Fnv_hash_bytes, respectively.
(hash<float>::operator(), hash<double>::operator()): Adjust.
* config/abi/pre/gnu.ver: Add exports.
* src/Makefile.am: Add.
* src/Makefile.in: Regenerate.
From-SVN: r164253
2010-09-14 02:23:56 +08:00
|
|
|
#if __SIZEOF_SIZE_T__ == 4
|
|
|
|
|
|
|
|
// Implementation of Murmur hash for 32-bit size_t.
|
|
|
|
size_t
|
|
|
|
_Hash_bytes(const void* ptr, size_t len, size_t seed)
|
|
|
|
{
|
|
|
|
const size_t m = 0x5bd1e995;
|
|
|
|
size_t hash = seed ^ len;
|
|
|
|
const char* buf = static_cast<const char*>(ptr);
|
|
|
|
|
|
|
|
// Mix 4 bytes at a time into the hash.
|
|
|
|
while(len >= 4)
|
|
|
|
{
|
|
|
|
size_t k = unaligned_load(buf);
|
|
|
|
k *= m;
|
|
|
|
k ^= k >> 24;
|
|
|
|
k *= m;
|
|
|
|
hash *= m;
|
|
|
|
hash ^= k;
|
|
|
|
buf += 4;
|
|
|
|
len -= 4;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Handle the last few bytes of the input array.
|
|
|
|
switch(len)
|
|
|
|
{
|
|
|
|
case 3:
|
|
|
|
hash ^= static_cast<unsigned char>(buf[2]) << 16;
|
|
|
|
case 2:
|
|
|
|
hash ^= static_cast<unsigned char>(buf[1]) << 8;
|
|
|
|
case 1:
|
|
|
|
hash ^= static_cast<unsigned char>(buf[0]);
|
2011-01-15 08:27:10 +08:00
|
|
|
hash *= m;
|
hash_bytes.cc: New file...
2010-09-13 Matt Austern <austern@google.com>
* src/hash_bytes.cc: New file, exports _Hash_bytes (a Murmur hash),
and _Fnv_hash_bytes (based on a FNV algorithm).
* src/compatibility-c++0x.cc (hash<string>::operator(),
hash<const string&>::operator(), hash<wstring>::operator(),
hash<const wstring&>::operator(), hash<error_code>::operator()):
Adjust, use _Hash_bytes.
* include/std/system_error (hash<error_code>::operator()): Likewise.
* include/std/thread (hash<thread::id>operator()): Likewise.
* include/std/bitset (hash<bitset>operator()): Likewise.
* include/bits/basic_string.h (hash<string>::operator(),
hash<wstring>::operator(), hash<u16string>::operator(),
hash<u32string>::operator()): Adjust.
* include/bits/vector.tcc (hash<vector<bool>>::operator()): Adjust.
* include/bits/functional_hash.h (_Hash_bytes, _Fnv_hash_bytes):
Declare.
(struct _Hash_impl, struct _Fnv_hash_impl): Add, use _Hash_bytes
and _Fnv_hash_bytes, respectively.
(hash<float>::operator(), hash<double>::operator()): Adjust.
* config/abi/pre/gnu.ver: Add exports.
* src/Makefile.am: Add.
* src/Makefile.in: Regenerate.
From-SVN: r164253
2010-09-14 02:23:56 +08:00
|
|
|
};
|
|
|
|
|
|
|
|
// Do a few final mixes of the hash.
|
|
|
|
hash ^= hash >> 13;
|
|
|
|
hash *= m;
|
|
|
|
hash ^= hash >> 15;
|
|
|
|
return hash;
|
|
|
|
}
|
|
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|
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// Implementation of FNV hash for 32-bit size_t.
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size_t
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_Fnv_hash_bytes(const void* ptr, size_t len, size_t hash)
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|
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{
|
|
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const char* cptr = static_cast<const char*>(ptr);
|
|
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for (; len; --len)
|
|
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{
|
|
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hash ^= static_cast<size_t>(*cptr++);
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hash *= static_cast<size_t>(16777619UL);
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}
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return hash;
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}
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#elif __SIZEOF_SIZE_T__ == 8
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// Implementation of Murmur hash for 64-bit size_t.
|
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|
size_t
|
|
|
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_Hash_bytes(const void* ptr, size_t len, size_t seed)
|
|
|
|
{
|
|
|
|
static const size_t mul = (0xc6a4a793UL << 32UL) + 0x5bd1e995UL;
|
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|
const char* const buf = static_cast<const char*>(ptr);
|
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|
|
|
|
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|
// Remove the bytes not divisible by the sizeof(size_t). This
|
|
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|
// allows the main loop to process the data as 64-bit integers.
|
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|
|
const int len_aligned = len & ~0x7;
|
|
|
|
const char* const end = buf + len_aligned;
|
|
|
|
size_t hash = seed ^ (len * mul);
|
|
|
|
for (const char* p = buf; p != end; p += 8)
|
|
|
|
{
|
|
|
|
const size_t data = shift_mix(unaligned_load(p) * mul) * mul;
|
|
|
|
hash ^= data;
|
|
|
|
hash *= mul;
|
|
|
|
}
|
|
|
|
if ((len & 0x7) != 0)
|
|
|
|
{
|
|
|
|
const size_t data = load_bytes(end, len & 0x7);
|
|
|
|
hash ^= data;
|
|
|
|
hash *= mul;
|
|
|
|
}
|
|
|
|
hash = shift_mix(hash) * mul;
|
|
|
|
hash = shift_mix(hash);
|
|
|
|
return hash;
|
|
|
|
}
|
|
|
|
|
|
|
|
// Implementation of FNV hash for 64-bit size_t.
|
|
|
|
size_t
|
|
|
|
_Fnv_hash_bytes(const void* ptr, size_t len, size_t hash)
|
|
|
|
{
|
|
|
|
const char* cptr = static_cast<const char*>(ptr);
|
|
|
|
for (; len; --len)
|
|
|
|
{
|
|
|
|
hash ^= static_cast<size_t>(*cptr++);
|
|
|
|
hash *= static_cast<size_t>(1099511628211ULL);
|
|
|
|
}
|
|
|
|
return hash;
|
|
|
|
}
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
|
|
// Dummy hash implementation for unusual sizeof(size_t).
|
|
|
|
size_t
|
|
|
|
_Hash_bytes(const void* ptr, size_t len, size_t seed)
|
|
|
|
{
|
|
|
|
size_t hash = seed;
|
|
|
|
const char* cptr = reinterpret_cast<const char*>(ptr);
|
2010-09-29 10:00:09 +08:00
|
|
|
for (; len; --len)
|
hash_bytes.cc: New file...
2010-09-13 Matt Austern <austern@google.com>
* src/hash_bytes.cc: New file, exports _Hash_bytes (a Murmur hash),
and _Fnv_hash_bytes (based on a FNV algorithm).
* src/compatibility-c++0x.cc (hash<string>::operator(),
hash<const string&>::operator(), hash<wstring>::operator(),
hash<const wstring&>::operator(), hash<error_code>::operator()):
Adjust, use _Hash_bytes.
* include/std/system_error (hash<error_code>::operator()): Likewise.
* include/std/thread (hash<thread::id>operator()): Likewise.
* include/std/bitset (hash<bitset>operator()): Likewise.
* include/bits/basic_string.h (hash<string>::operator(),
hash<wstring>::operator(), hash<u16string>::operator(),
hash<u32string>::operator()): Adjust.
* include/bits/vector.tcc (hash<vector<bool>>::operator()): Adjust.
* include/bits/functional_hash.h (_Hash_bytes, _Fnv_hash_bytes):
Declare.
(struct _Hash_impl, struct _Fnv_hash_impl): Add, use _Hash_bytes
and _Fnv_hash_bytes, respectively.
(hash<float>::operator(), hash<double>::operator()): Adjust.
* config/abi/pre/gnu.ver: Add exports.
* src/Makefile.am: Add.
* src/Makefile.in: Regenerate.
From-SVN: r164253
2010-09-14 02:23:56 +08:00
|
|
|
hash = (hash * 131) + *cptr++;
|
|
|
|
return hash;
|
|
|
|
}
|
|
|
|
|
|
|
|
size_t
|
|
|
|
_Fnv_hash_bytes(const void* ptr, size_t len, size_t seed)
|
|
|
|
{ return _Hash_bytes(ptr, len, seed); }
|
|
|
|
|
|
|
|
#endif /* __SIZEOF_SIZE_T__ */
|
2011-01-15 08:27:10 +08:00
|
|
|
|
PR libstdc++/36104 part four
2011-01-30 Benjamin Kosnik <bkoz@redhat.com>
PR libstdc++/36104 part four
* include/bits/c++config (_GLIBCXX_STD): Remove.
(_GLIBCXX_STD_D, _GLIBCXX_PR): Now _GLIBCXX_STD_C.
(_GLIBCXX_P): Now _GLIBCXX_STD_A.
(_GLIBCXX_NAMESPACE_DEBUG, _GLIBCXX_NAMESPACE_PARALLEL,
_GLIBCXX_NAMESPACE_PROFILE, _GLIBCXX_NAMESPACE_VERSION): Remove.
(_GLIBCXX_INLINE_DEBUG, _GLIBCXX_INLINE_PARALLEL,
_GLIBCXX_INLINE_PROFILE): Remove.
(_GLIBCXX_BEGIN_NAMESPACE(X)): Remove.
(_GLIBCXX_END_NAMESPACE): Remove.
(_GLIBCXX_BEGIN_NESTED_NAMESPACE(X, Y)): Remove.
(_GLIBCXX_END_NESTED_NAMESPACE): Remove.
(_GLIBCXX_BEGIN_NAMESPACE_ALGO): Add.
(_GLIBCXX_END_NAMESPACE_ALGO): Add.
(_GLIBCXX_BEGIN_NAMESPACE_CONTAINER): Add.
(_GLIBCXX_END_NAMESPACE_CONTAINER): Add.
(_GLIBCXX_BEGIN_NAMESPACE_VERSION): Add.
(_GLIBCXX_END_NAMESPACE_VERSION): Add.
(_GLIBCXX_BEGIN_LDBL_NAMESPACE): To _GLIBCXX_BEGIN_NAMESPACE_LDBL.
(_GLIBCXX_END_LDBL_NAMESPACE): To _GLIBCXX_END_NAMESPACE_LDBL.
(_GLIBCXX_VISIBILITY_ATTR): Revert to _GLIBCXX_VISIBILITY.
* include/*: Use new macros for namespace scope.
* config/*: Same.
* src/*: Same.
* src/Makefile.am (sources): Remove debug_list.cc, add
compatibility-debug_list-2.cc.
(parallel_sources): Remove parallel_list.cc, add
compatibility-parallel_list-2.cc.
(compatibility-parallel_list-2.[o,lo]): New rule.
* src/Makefile.in: Regenerate.
* src/debug_list.cc: Remove.
* src/parallel_list.cc: Remove.
* src/compatibility-list-2.cc: New.
* src/compatibility-debug_list-2.cc: New.
* src/compatibility-parallel_list-2.cc: New.
* doc/doxygen/user.cfg.in: Adjust macros.
* testsuite/20_util/auto_ptr/assign_neg.cc: Adjust line numbers, macros.
* testsuite/20_util/declval/requirements/1_neg.cc: Same.
* testsuite/20_util/duration/requirements/typedefs_neg1.cc: Same.
* testsuite/20_util/duration/requirements/typedefs_neg2.cc: Same.
* testsuite/20_util/duration/requirements/typedefs_neg3.cc: Same.
* testsuite/20_util/forward/c_neg.cc: Same.
* testsuite/20_util/forward/f_neg.cc: Same.
* testsuite/20_util/make_signed/requirements/typedefs_neg.cc: Same.
* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc: Same.
* testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Same.
* testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Same.
* testsuite/20_util/shared_ptr/cons/43820_neg.cc: Same.
* testsuite/20_util/weak_ptr/comparison/cmp_neg.cc: Same.
* testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Same.
* testsuite/23_containers/deque/requirements/dr438/
constructor_1_neg.cc: Same.
* testsuite/23_containers/deque/requirements/dr438/
constructor_2_neg.cc: Same.
* testsuite/23_containers/deque/requirements/dr438/insert_neg.cc: Same.
* testsuite/23_containers/forward_list/capacity/1.cc: Same.
* testsuite/23_containers/forward_list/requirements/dr438/
assign_neg.cc: Same.
* testsuite/23_containers/forward_list/requirements/dr438/
constructor_1_neg.cc: Same.
* testsuite/23_containers/forward_list/requirements/dr438/
constructor_2_neg.cc: Same.
* testsuite/23_containers/forward_list/requirements/dr438/
insert_neg.cc: Same.
* testsuite/23_containers/list/capacity/29134.cc: Same.
* testsuite/23_containers/list/requirements/dr438/assign_neg.cc: Same.
* testsuite/23_containers/list/requirements/dr438/
constructor_1_neg.cc: Same.
* testsuite/23_containers/list/requirements/dr438/
constructor_2_neg.cc: Same.
* testsuite/23_containers/list/requirements/dr438/insert_neg.cc: Same.
* testsuite/23_containers/vector/bool/capacity/29134.cc: Same.
* testsuite/23_containers/vector/bool/modifiers/insert/31370.cc: Same.
* testsuite/23_containers/vector/requirements/dr438/assign_neg.cc: Same.
* testsuite/23_containers/vector/requirements/dr438/
constructor_1_neg.cc: Same.
* testsuite/23_containers/vector/requirements/dr438/
constructor_2_neg.cc: Same.
* testsuite/23_containers/vector/requirements/dr438/insert_neg.cc: Same.
* testsuite/25_algorithms/sort/35588.cc: Same.
* testsuite/27_io/ios_base/cons/assign_neg.cc: Same.
* testsuite/27_io/ios_base/cons/copy_neg.cc: Same.
* testsuite/ext/profile/mutex_extensions_neg.cc: Same.
* testsuite/ext/profile/profiler_algos.cc: Same.
* testsuite/ext/type_traits/add_unsigned_floating_neg.cc: Same.
* testsuite/ext/type_traits/add_unsigned_integer_neg.cc: Same.
* testsuite/ext/type_traits/remove_unsigned_floating_neg.cc: Same.
* testsuite/ext/type_traits/remove_unsigned_integer_neg.cc: Same.
* testsuite/tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc: Same.
From-SVN: r169421
2011-01-31 06:39:36 +08:00
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
|
|
} // namespace
|