rocksdb/port
Peter Dillinger fd3e0f43b3 Require C++17 (#9481)
Summary:
Drop support for some old compilers by requiring C++17 standard
(or higher). See https://github.com/facebook/rocksdb/issues/9388

First modification based on this is to remove some conditional compilation in slice.h (also
better for ODR)

Also in this PR:
* Fix some Makefile formatting that seems to affect ASSERT_STATUS_CHECKED config in
some cases
* Add c_test to NON_PARALLEL_TEST in Makefile
* Fix a clang-analyze reported "potential leak" in lru_cache_test
* Better "compatibility" definition of DEFINE_uint32 for old versions of gflags
* Fix a linking problem with shared libraries in Makefile (`./random_test: error while loading shared libraries: librocksdb.so.6.29: cannot open shared object file: No such file or directory`)
* Always set ROCKSDB_SUPPORT_THREAD_LOCAL and use thread_local (from C++11)
  * TODO in later PR: clean up that obsolete flag
* Fix a cosmetic typo in c.h (https://github.com/facebook/rocksdb/issues/9488)

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9481

Test Plan:
CircleCI config substantially updated.

* Upgrade to latest Ubuntu images for each release
* Generally prefer Ubuntu 20, but keep a couple Ubuntu 16 builds with oldest supported
compilers, to ensure compatibility
* Remove .circleci/cat_ignore_eagain except for Ubuntu 16 builds, because this is to work
around a kernel bug that should not affect anything but Ubuntu 16.
* Remove designated gcc-9 build, because the default linux build now uses GCC 9 from
Ubuntu 20.
* Add some `apt-key add` to fix some apt "couldn't be verified" errors
* Generally drop SKIP_LINK=1; work-around no longer needed
* Generally `add-apt-repository` before `apt-get update` as manual testing indicated the
reverse might not work.

Travis:
* Use gcc-7 by default (remove specific gcc-7 and gcc-4.8 builds)
* TODO in later PR: fix s390x "Assembler messages: Error: invalid switch -march=z14" failure

AppVeyor:
* Completely dropped because we are dropping VS2015 support and CircleCI covers
VS >= 2017

Also local testing with old gflags (out of necessity when using ROCKSDB_NO_FBCODE=1).

Reviewed By: mrambacher

Differential Revision: D33946377

Pulled By: pdillinger

fbshipit-source-id: ae077c823905b45370a26c0103ada119459da6c1
2022-02-04 17:13:10 -08:00
..
win Require C++17 (#9481) 2022-02-04 17:13:10 -08:00
jemalloc_helper.h jemalloc_helper: Limit the mm_malloc.h hack to glibc on linux (#8425) 2021-06-29 08:40:02 -07:00
lang.h Fix/improve 'must free heap allocations' code (#9209) 2021-11-29 10:53:52 -08:00
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_dirent.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
port_example.h Replace most typedef with using= (#8751) 2021-09-07 11:31:59 -07:00
port_posix.cc Prevent deadlock in db_stress with DbStressCompactionFilter (#8956) 2021-09-24 16:54:02 -07:00
port_posix.h Require C++17 (#9481) 2022-02-04 17:13:10 -08:00
port.h Change RocksDB License 2017-07-15 16:11:23 -07:00
README reverting disastrous MOE commit, returning to r21 2011-04-19 23:11:15 +00:00
stack_trace.cc Standardize on GCC for TSAN conditional compilation (#8543) 2021-07-15 23:50:00 -07:00
stack_trace.h Fault injection in db_stress (#6538) 2020-04-10 17:21:26 -07:00
sys_time.h Replace most typedef with using= (#8751) 2021-09-07 11:31:59 -07:00
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

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.