Mercurial > hg
view mercurial/compat.h @ 42136:10a6725dca6e
compression: introduce an official `zstd-revlog` requirement
This requirement supersedes `exp-compression-zstd`. However, we keep support for
the old requirement.
Strictly speaking, we do not need to add a new requirement, there are no logic
change making "new" repo incompatible with mercurial client using a version
that support `exp-compression-zstd`.
The choice to introduce a new requirement is motivated by the following:
* The previous requirement was explicitly "experimental". Using it by default
could confuse users.
* adding support for a hypothetical third compression engine will requires new
code, and will comes with its own requirement tool.
* We won't use it as the default for a while since I do not think we support
zstd on all platform. I can imagine we'll gain another (unrelated but on my
default) requirement by the time we turn this zstd by default.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Wed, 27 Mar 2019 18:27:03 +0100 |
parents | 11ed2eadf937 |
children | d86908050375 |
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#ifndef _HG_COMPAT_H_ #define _HG_COMPAT_H_ #ifdef _WIN32 #ifdef _MSC_VER #if _MSC_VER < 1900 /* msvc 6.0 has problems */ #define inline __inline #if defined(_WIN64) typedef __int64 ssize_t; typedef unsigned __int64 uintptr_t; #else typedef int ssize_t; typedef unsigned int uintptr_t; #endif typedef signed char int8_t; typedef short int16_t; typedef long int32_t; typedef __int64 int64_t; typedef unsigned char uint8_t; typedef unsigned short uint16_t; typedef unsigned long uint32_t; typedef unsigned __int64 uint64_t; #else /* VC++ 14 */ #include <stdint.h> #if defined(_WIN64) typedef __int64 ssize_t; #else typedef int ssize_t; #endif #endif /* _MSC_VER < 1900 */ #else /* not msvc */ #include <stdint.h> #endif #else /* not windows */ #include <sys/types.h> #if defined __BEOS__ && !defined __HAIKU__ #include <ByteOrder.h> #else #include <arpa/inet.h> #endif #include <inttypes.h> #endif #if defined __hpux || defined __SUNPRO_C || defined _AIX #define inline #endif #ifdef __linux #define inline __inline #endif #endif