Add xxhash to dependencies

This commit is contained in:
Connor McLaughlin 2020-03-05 21:11:33 +10:00
parent 552a01a9b6
commit d46d681179
11 changed files with 4765 additions and 0 deletions

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@ -10,6 +10,7 @@ add_subdirectory(minizip)
add_subdirectory(lzma)
add_subdirectory(libFLAC)
add_subdirectory(libchdr)
add_subdirectory(xxhash)
if(NOT ANDROID)
add_subdirectory(nativefiledialog)

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dep/xxhash/CHANGELOG Normal file
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v0.7.3
- perf: improved speed for large inputs (~+20%)
- perf: improved latency for small inputs (~10%)
- perf: s390x Vectorial code, by @easyaspi314
- cli: improved support for Unicode filenames on Windows, thanks to @easyaspi314 and @t-mat
- api: `xxhash.h` can now be included in any order, with and without `XXH_STATIC_LINKING_ONLY` and `XXH_INLINE_ALL`
- build: xxHash's implementation transferred into `xxhash.h`. No more need to have `xxhash.c` in the `/include` directory for `XXH_INLINE_ALL` to work
- install: created pkg-config file, by @bket
- install: VCpkg installation instructions, by @LilyWangL
- doc: Highly improved code documentation, by @easyaspi314
- misc: New test tool in `/tests/collisions`: brute force collision tester for 64-bit hashes
v0.7.2
- Fixed collision ratio of `XXH128` for some specific input lengths, reported by @svpv
- Improved `VSX` and `NEON` variants, by @easyaspi314
- Improved performance of scalar code path (`XXH_VECTOR=0`), by @easyaspi314
- `xxhsum`: can generate 128-bit hashes with the `-H2` option (note: for experimental purposes only! `XXH128` is not yet frozen)
- `xxhsum`: option `-q` removes status notifications
v0.7.1
- Secret first: the algorithm computation can be altered by providing a "secret", which is any blob of bytes, of size >= `XXH3_SECRET_SIZE_MIN`.
- `seed` is still available, and acts as a secret generator
- updated `ARM NEON` variant by @easyaspi314
- Streaming implementation is available
- Improve compatibility and performance with Visual Studio, with help from @aras-p
- Better integration when using `XXH_INLINE_ALL`: do not pollute host namespace, use its own macros, such as `XXH_ASSERT()`, `XXH_ALIGN`, etc.
- 128-bit variant provides helper functions for comparison of hashes.
- Better `clang` generation of `rotl` instruction, thanks to @easyaspi314
- `XXH_REROLL` build macro to reduce binary size, by @easyaspi314
- Improved `cmake` script, by @Mezozoysky
- Full benchmark program provided in `/tests/bench`

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dep/xxhash/CMakeLists.txt Normal file
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set(SRCS
include/xxh3.h
include/xxhash.h
src/xxhash.c
)
add_library(xxhash ${SRCS})
target_include_directories(xxhash PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/include")
target_include_directories(xxhash INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/include")
target_compile_definitions(xxhash INTERFACE "XXH_STATIC_LINKING_ONLY")

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xxHash Library
Copyright (c) 2012-present, Yann Collet
All rights reserved.
BSD 2-Clause License (https://www.opensource.org/licenses/bsd-license.php)
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or
other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
----------------------------------------------------
xxhsum command line interface
Copyright (c) 2013-present, Yann Collet
All rights reserved.
GPL v2 License
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

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xxHash - Extremely fast hash algorithm
======================================
<!-- TODO: Update. -->
xxHash is an Extremely fast Hash algorithm, running at RAM speed limits.
It successfully completes the [SMHasher](https://code.google.com/p/smhasher/wiki/SMHasher) test suite
which evaluates collision, dispersion and randomness qualities of hash functions.
Code is highly portable, and hashes are identical on all platforms (little / big endian).
|Branch |Status |
|------------|---------|
|master | [![Build Status](https://travis-ci.org/Cyan4973/xxHash.svg?branch=master)](https://travis-ci.org/Cyan4973/xxHash?branch=master) |
|dev | [![Build Status](https://travis-ci.org/Cyan4973/xxHash.svg?branch=dev)](https://travis-ci.org/Cyan4973/xxHash?branch=dev) |
Benchmarks
-------------------------
The benchmark uses SMHasher speed test, compiled with Visual 2010 on a Windows Seven 32-bit box.
The reference system uses a Core 2 Duo @3GHz
| Name | Speed | Quality | Author |
|---------------|--------------------|:-------:|-------------------|
| [xxHash] | 5.4 GB/s | 10 | Y.C. |
| MurmurHash 3a | 2.7 GB/s | 10 | Austin Appleby |
| SBox | 1.4 GB/s | 9 | Bret Mulvey |
| Lookup3 | 1.2 GB/s | 9 | Bob Jenkins |
| CityHash64 | 1.05 GB/s | 10 | Pike & Alakuijala |
| FNV | 0.55 GB/s | 5 | Fowler, Noll, Vo |
| CRC32 | 0.43 GB/s &dagger; | 9 | |
| MD5-32 | 0.33 GB/s | 10 | Ronald L.Rivest |
| SHA1-32 | 0.28 GB/s | 10 | |
[xxHash]: https://www.xxhash.com
Note &dagger;: SMHasher's CRC32 implementation is known to be slow. Faster implementations exist.
Q.Score is a measure of quality of the hash function.
It depends on successfully passing SMHasher test set.
10 is a perfect score.
Algorithms with a score < 5 are not listed on this table.
A more recent version, XXH64, has been created thanks to [Mathias Westerdahl](https://github.com/JCash),
which offers superior speed and dispersion for 64-bit systems.
Note however that 32-bit applications will still run faster using the 32-bit version.
SMHasher speed test, compiled using GCC 4.8.2, on Linux Mint 64-bit.
The reference system uses a Core i5-3340M @2.7GHz
| Version | Speed on 64-bit | Speed on 32-bit |
|------------|------------------|------------------|
| XXH64 | 13.8 GB/s | 1.9 GB/s |
| XXH32 | 6.8 GB/s | 6.0 GB/s |
This project also includes a command line utility, named `xxhsum`, offering similar features to `md5sum`,
thanks to [Takayuki Matsuoka](https://github.com/t-mat)'s contributions.
### License
The library files `xxhash.c` and `xxhash.h` are BSD licensed.
The utility `xxhsum` is GPL licensed.
### New hash algorithms
Starting with `v0.7.0`, the library includes a new algorithm named `XXH3`,
which is able to generate 64 and 128-bit hashes.
The new algorithm is much faster than its predecessors for both long and small inputs,
which can be observed in the following graphs:
![XXH3, bargraph](https://user-images.githubusercontent.com/750081/61976096-b3a35f00-af9f-11e9-8229-e0afc506c6ec.png)
![XXH3, latency, random size](https://user-images.githubusercontent.com/750081/61976089-aedeab00-af9f-11e9-9239-e5375d6c080f.png)
To access these new prototypes, one needs to unlock their declaration, using the build macro `XXH_STATIC_LINKING_ONLY`.
The algorithm is currently in development, meaning its return values might still change in future versions.
However, the API is stable, and can be used in production, typically for ephemeral
data (produced and consumed in same session).
`XXH3`'s return values will be finalized upon reaching `v0.8.0`.
### Build modifiers
The following macros can be set at compilation time to modify libxxhash's behavior. They are all disabled by default.
- `XXH_INLINE_ALL`: Make all functions `inline`, with implementations being directly included within `xxhash.h`.
Inlining functions is beneficial for speed on small keys.
It's _extremely effective_ when key length is expressed as _a compile time constant_,
with performance improvements being observed in the +200% range .
See [this article](https://fastcompression.blogspot.com/2018/03/xxhash-for-small-keys-impressive-power.html) for details.
Note: there is no need to compile an `xxhash.o` object file in this case.
- `XXH_NO_INLINE_HINTS`: By default, xxHash uses tricks like `__attribute__((always_inline))` and `__forceinline` to try and improve performance at the cost of code size. Defining this to 1 will mark all internal functions as `static`, allowing the compiler to decide whether to inline a function or not. This is very useful when optimizing for the smallest binary size, and it is automatically defined when compiling with `-O0`, `-Os`, `-Oz`, or `-fno-inline` on GCC and Clang. This may also increase performance depending on the compiler and the architecture.
- `XXH_REROLL`: Reduces the size of the generated code by not unrolling some loops. Impact on performance may vary, depending on the platform and the algorithm.
- `XXH_ACCEPT_NULL_INPUT_POINTER`: if set to `1`, when input is a `NULL` pointer,
xxHash'd result is the same as a zero-length input
(instead of a dereference segfault).
Adds one branch at the beginning of the hash.
- `XXH_FORCE_MEMORY_ACCESS`: The default method `0` uses a portable `memcpy()` notation.
Method `1` uses a gcc-specific `packed` attribute, which can provide better performance for some targets.
Method `2` forces unaligned reads, which is not standards compliant, but might sometimes be the only way to extract better read performance.
Method `3` uses a byteshift operation, which is best for old compilers which don't inline `memcpy()` or big-endian systems without a byteswap instruction
- `XXH_CPU_LITTLE_ENDIAN`: By default, endianess is determined at compile time.
It's possible to skip auto-detection and force format to little-endian, by setting this macro to 1.
Setting it to 0 forces big-endian.
- `XXH_PRIVATE_API`: same impact as `XXH_INLINE_ALL`.
Name underlines that XXH_* symbols will not be exported.
- `XXH_NAMESPACE`: Prefixes all symbols with the value of `XXH_NAMESPACE`.
Useful to evade symbol naming collisions,
in case of multiple inclusions of xxHash's source code.
Client applications can still use the regular function name,
as symbols are automatically translated through `xxhash.h`.
- `XXH_STATIC_LINKING_ONLY`: gives access to the state declaration for static allocation.
Incompatible with dynamic linking, due to risks of ABI changes.
- `XXH_NO_LONG_LONG`: removes support for XXH3 and XXH64 for targets without 64-bit support.
- `XXH_IMPORT`: MSVC specific: should only be defined for dynamic linking, as it prevents linkage errors.
### Building xxHash - Using vcpkg
You can download and install xxHash using the [vcpkg](https://github.com/Microsoft/vcpkg) dependency manager:
git clone https://github.com/Microsoft/vcpkg.git
cd vcpkg
./bootstrap-vcpkg.sh
./vcpkg integrate install
./vcpkg install xxhash
The xxHash port in vcpkg is kept up to date by Microsoft team members and community contributors. If the version is out of date, please [create an issue or pull request](https://github.com/Microsoft/vcpkg) on the vcpkg repository.
### Example
Calling xxhash 64-bit variant from a C program:
```C
#include "xxhash.h"
(...)
XXH64_hash_t hash = XXH64(buffer, size, seed);
}
```
Using streaming variant is more involved, but makes it possible to provide data incrementally:
```C
#include "stdlib.h" /* abort() */
#include "xxhash.h"
XXH64_hash_t calcul_hash_streaming(FileHandler fh)
{
/* create a hash state */
XXH64_state_t* const state = XXH64_createState();
if (state==NULL) abort();
size_t const bufferSize = SOME_SIZE;
void* const buffer = malloc(bufferSize);
if (buffer==NULL) abort();
/* Initialize state with selected seed */
XXH64_hash_t const seed = 0; /* or any other value */
if (XXH64_reset(state, seed) == XXH_ERROR) abort();
/* Feed the state with input data, any size, any number of times */
(...)
while ( /* any condition */ ) {
size_t const length = get_more_data(buffer, bufferSize, fh);
if (XXH64_update(state, buffer, length) == XXH_ERROR) abort();
(...)
}
(...)
/* Get the hash */
XXH64_hash_t const hash = XXH64_digest(state);
/* State can be re-used; in this example, it is simply freed */
free(buffer);
XXH64_freeState(state);
return hash;
}
```
### Other programming languages
Aside from the C reference version,
xxHash is also available in many different programming languages,
thanks to many great contributors.
They are [listed here](https://www.xxhash.com/#other-languages).
### Branch Policy
> - The "master" branch is considered stable, at all times.
> - The "dev" branch is the one where all contributions must be merged
before being promoted to master.
> + If you plan to propose a patch, please commit into the "dev" branch,
or its own feature branch.
Direct commit to "master" are not permitted.

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/*
* xxHash - Extremely Fast Hash algorithm
* Copyright (C) 2012-present, Yann Collet
*
* BSD 2-Clause License (https://www.opensource.org/licenses/bsd-license.php)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You can contact the author at:
* - xxHash homepage: https://www.xxhash.com
* - xxHash source repository: https://github.com/Cyan4973/xxHash
*/
/*
* xxhash.c instantiates functions defined in xxhash.h
*/
#define XXH_STATIC_LINKING_ONLY /* access advanced declarations */
#define XXH_IMPLEMENTATION /* access definitions */
#include "xxhash.h"

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dep/xxhash/xxhash.vcxproj Normal file
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View file

@ -0,0 +1,10 @@
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup>
<ClCompile Include="src\xxhash.c" />
</ItemGroup>
<ItemGroup>
<ClInclude Include="include\xxh3.h" />
<ClInclude Include="include\xxhash.h" />
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View file

@ -41,6 +41,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "duckstation-sdl", "src\duck
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "frontend-common", "src\frontend-common\frontend-common.vcxproj", "{6245DEC8-D2DA-47EE-A373-CBD6FCF3ECE6}"
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "xxhash", "dep\xxhash\xxhash.vcxproj", "{09553C96-9F39-49BF-8AE6-7ACBD07C410C}"
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Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|x64 = Debug|x64
@ -341,6 +343,22 @@ Global
{6245DEC8-D2DA-47EE-A373-CBD6FCF3ECE6}.ReleaseLTCG|x64.Build.0 = ReleaseLTCG|x64
{6245DEC8-D2DA-47EE-A373-CBD6FCF3ECE6}.ReleaseLTCG|x86.ActiveCfg = ReleaseLTCG|Win32
{6245DEC8-D2DA-47EE-A373-CBD6FCF3ECE6}.ReleaseLTCG|x86.Build.0 = ReleaseLTCG|Win32
{09553C96-9F39-49BF-8AE6-7ACBD07C410C}.Debug|x64.ActiveCfg = Debug|x64
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GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
@ -359,6 +377,7 @@ Global
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