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Mr-Leshiy c2c7d5e916 Fix cast-function-type warning (#8230) 
Summary:
Fixing cast-function-type which is appears during the following build:
```bash
cmake ..  -DFAIL_ON_WARNINGS=ON -DCMAKE_C_COMPILER=x86_64-w64-mingw32-gcc -DCMAKE_CXX_COMPILER=x86_64-w64-mingw32-g++ -DCMAKE_SYSTEM_NAME=Windows
make rocksdb
```
Here is the log:
```
/home/leshiy/Work/rocksdb/port/win/env_win.cc: In constructor ‘rocksdb::port::WinClock::WinClock()’:
/home/leshiy/Work/rocksdb/port/win/env_win.cc:92:9: error: cast between incompatible function types from ‘FARPROC’ {aka ‘long long int (*)()’} to ‘rocksdb::port::WinClock::FnGetSystemTimePreciseAsFileTime’ {aka ‘void (*)(_FILETIME*)’} [-Werror=cast-function-type]
   92 |         (FnGetSystemTimePreciseAsFileTime)GetProcAddress(
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   93 |             module, "GetSystemTimePreciseAsFileTime");
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1plus: all warnings being treated as errors
make[2]: *** [CMakeFiles/rocksdb.dir/build.make:4337: CMakeFiles/rocksdb.dir/port/win/env_win.cc.obj] Error 1
make[1]: *** [CMakeFiles/Makefile2:83: CMakeFiles/rocksdb.dir/all] Error 2
make: *** [Makefile:91: all] Error 2
```

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8230

Reviewed By: jay-zhuang

Differential Revision: D28000215

Pulled By: mrambacher

fbshipit-source-id: 874782cf48f70470e3fbd9097585bf42e810ca61
 		2021-04-26 10:13:55 -07:00
..
win Fix cast-function-type warning (#8230) 2021-04-26 10:13:55 -07:00
README reverting disastrous MOE commit, returning to r21 2011-04-19 23:11:15 +00:00
jemalloc_helper.h Fix various small build issues, Java API naming (#7776) 2020-12-18 16:12:26 -08:00
lang.h C++20 compatibility (#6697) 2020-04-20 13:24:25 -07:00
likely.h Support pragma once in all header files and cleanup some warnings (#4339) 2018-09-05 18:13:31 -07:00
malloc.h Charge block cache for cache internal usage (#5797) 2019-09-16 15:26:21 -07:00
port.h Change RocksDB License 2017-07-15 16:11:23 -07:00
port_dirent.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
port_example.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
port_posix.cc Use thread-safe `strerror_r()` to get error message (#8087) 2021-03-24 23:07:27 -07:00
port_posix.h On ARM platform, use yield op to relax CPU. See issue 7376 (#7438) 2021-03-26 18:13:24 -07:00
stack_trace.cc stack trace freebsd update. using native api to get the process (#8144) 2021-04-06 00:28:47 -07:00
stack_trace.h Fault injection in db_stress (#6538) 2020-04-10 17:21:26 -07:00
sys_time.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
util_logger.h Move some logging related files to logging/ (#5387) 2019-05-31 17:23:59 -07:00
xpress.h Change RocksDB License 2017-07-15 16:11:23 -07:00

README 

This directory contains interfaces and implementations that isolate the
rest of the package from platform details.

Code in the rest of the package includes "port.h" from this directory.
"port.h" in turn includes a platform specific "port_<platform>.h" file
that provides the platform specific implementation.

See port_posix.h for an example of what must be provided in a platform
specific header file.