Summary: as title

Reviewed By: yfeldblum

Differential Revision: D14476923

fbshipit-source-id: 5ce16adb2402720b16acd12ab0003c1e93395f6c

Reviewed By: amajeed1

Differential Revision: D14496345

fbshipit-source-id: 985e5299930c3812e7510f6dfe7bdcd3ce3519cf

Summary: [Folly] Remove include of `glog` from various places.

Reviewed By: spalamarchuk

Differential Revision: D14494311

fbshipit-source-id: 122b63a726a08802d7b4ef6b55b304e9800c258d

Summary:
- Fix a few shellcheck warnings on `bootstrap-osx-homebrew.sh`.
- This will help when new changes are made to this script as
  shellcheck is run internally.
Pull Request resolved: https://github.com/facebook/folly/pull/1058

Differential Revision: D14493361

Pulled By: yfeldblum

fbshipit-source-id: e46f9d0e329fd1ebe16820bdb5614c53363c5dfe

Reviewed By: A5he

Differential Revision: D14396454

fbshipit-source-id: a00b1eab527237c885e04413db1a0a413121d91b

Summary: This makes it possible to add future APIs to primitives built using fibers::Baton.

Reviewed By: A5he

Differential Revision: D14396094

fbshipit-source-id: bf64a31c25ed4dd92b8c484cb4256078efdc6262

Summary:
- Remove unneeded typename for a using alias in `F14Table.h`.
Pull Request resolved: https://github.com/facebook/folly/pull/1056

Reviewed By: nbronson

Differential Revision: D14473219

Pulled By: yfeldblum

fbshipit-source-id: a6ac26c42dbca219ce123aff00b1ee7079068007

Summary:
contains() is part of the c++20 spec.  This implements it, and
refactors count() to use contains().

Reviewed By: nbronson

Differential Revision: D14426805

fbshipit-source-id: 2435124e9c0a8eeb4e53109f0ddac884c227c781

Summary:
The heterogenous count() method currently returns size_type, unlike
similar methods (normal count(), F14Map.count() methods).  This
standardizes it.

Reviewed By: nbronson

Differential Revision: D14426807

fbshipit-source-id: 140be39fcda99c9f82ced3962ddcbdd1d5f53ba6

Summary:
When a user counter is added to benchmarks, the counter's value is written as a bare integer.
This change gives chance to user to either still keep it reported as bare integer, a time value or a metric value.

Differential Revision: D14451341

fbshipit-source-id: 95e64a89c201bb385d9a403f3442fa70c2ac7e2a

Summary: Make AsyncIOTest.cpp conditionally depend on $LIBAIO_FOUND in CMakeLists.txt.

Reviewed By: yfeldblum

Differential Revision: D14365682

fbshipit-source-id: 5ac7dc25174ab48ed1de8846956e69c7759fc9bd

Summary: convert all executors in pushmi and all executor concepts and usage in pushmi to use `schedule()`

Reviewed By: ericniebler

Differential Revision: D13463902

fbshipit-source-id: 01eac4fe0b5cd49afbd95118db769db59a3b968c

Summary: It's dead.

Reviewed By: yfeldblum

Differential Revision: D14425042

fbshipit-source-id: 098de614955eedd7ccc733858db85b997d01d9e0

Summary: At least make it possible to do things correctly.

Reviewed By: yfeldblum, LeeHowes

Differential Revision: D14426753

fbshipit-source-id: 63b3572175224dbbda828981a5c9f067a5e35f33

Summary: Fix typo

Reviewed By: aary

Differential Revision: D14411090

fbshipit-source-id: 4ca0273201facebc815db26d23662d0d192c831f

Summary:
[Folly] Move `FOLLY_DEFINE_CPO` to `folly/lang/CustomizationPoint.h`.

And move `StaticConst` to top-level `folly` namespace and into `folly/lang/`.

And Americanize the spellings of words in the comments.

Reviewed By: ericniebler, lewissbaker

Differential Revision: D14402315

fbshipit-source-id: e13dbc9d471ee73ba0a289d375c235734334b920

Summary:
future.then([] -> T)  currently returns Future<T>
future.then([] -> Try<T>)  currently returns Future<Try<T>>

This changes that behavior, such that future.then([] -> Try<T>) will
return Future<T>.

This is a more desirable interface for futures. It also simplifies
implementation of a separate task (propagating exceptions more
efficiently through chained callbacks) because it enables us to internally
substitute lambdas returning T with lambdas returning Try<T>.

Reviewed By: yfeldblum, ryantimwilson

Differential Revision: D14318624

fbshipit-source-id: 51363e82ceb86bfecf87ae661188be9ca3dd8002

Summary: Instead prefer the NetworkSocket version

Reviewed By: yfeldblum

Differential Revision: D14371075

fbshipit-source-id: 5dfa34e21b360cae987b1ffb1dd5f5ee7b105623

Summary:
- Instead of defining our own version of whether a type is nothrow
  swappable, reuse the existing definition from `folly/Traits.h` which
  is spelled `IsNothrowSwappable`.
Pull Request resolved: https://github.com/facebook/folly/pull/1049

Reviewed By: Orvid

Differential Revision: D14402098

Pulled By: yfeldblum

fbshipit-source-id: 5b61bd6d43db939b4499e908b26a3eb61f8929a3

Summary:
- Remove `remove_cvref_t` alias template from `pusmhi/traits.h` in favor of
  `folly::remove_cvref_t` from `folly/Traits.h` which is the same
  definition.
Pull Request resolved: https://github.com/facebook/folly/pull/1048

Reviewed By: ericniebler

Differential Revision: D14402040

Pulled By: yfeldblum

fbshipit-source-id: baba640e5fa410e0c48e666ea004de61b7f12a12

Summary:
- Replace `Not` template alias from `PolyDetail.h` with `folly::Negation` from
 `folly/Traits.h` which does the same thing.
Pull Request resolved: https://github.com/facebook/folly/pull/1045

Reviewed By: ericniebler

Differential Revision: D14402105

Pulled By: yfeldblum

fbshipit-source-id: 100347dbdc159c5217c7452b202650d58d80850c

Summary: Add timerfd based timers

Reviewed By: djwatson

Differential Revision: D13809490

fbshipit-source-id: 9ae70d9cc4d481245623efbc3e74ce5ff8c8f3ca

fbshipit-source-id: 4c8ab4cdad047a4311c84b302b28160dd2bc9ed4

Summary:
- In `c2e51a8e`, i.e.
  Differential Revision: D9213429
  fbshipit-source-id: 849c0fce01d4903d3f8a7b6d196037bf950e5921
  a `libfolly.pc.in` file was placed in the `CMake` directory so that
  the `libfolly.pc` file is installed during CMake configure time.
- Note that the `libfolly.pc.in` in the `folly` directory is not
  referenced anywhere in the build tree, and it has been superseded with
  the one in the `CMake` directory. As such, remove it.
Pull Request resolved: https://github.com/facebook/folly/pull/1050

Reviewed By: calebmarchent

Differential Revision: D14400016

Pulled By: yfeldblum

fbshipit-source-id: 4c8ab4cdad047a4311c84b302b28160dd2bc9ed4

Summary: [Folly] Cut glog include in `folly/Range.h`.

Reviewed By: meyering

Differential Revision: D14402324

fbshipit-source-id: ed37939d69b2de4016483e7a2564d73892a64b3b

Summary:
Some tests fail to compile because gflags.h is not included:

    .../folly/test/FormatOtherTest.cpp: In function 'int main(int, char**)':
    .../folly/test/FormatOtherTest.cpp:113:3: error: 'gflags' has not been declared
       gflags::ParseCommandLineFlags(&argc, &argv, true);
       ^~~~~~

The tests compile without issue on Travis CI without this patch, but I
don't see how that's possible.

Include gflags.h explicitly to fix the compilation of these tests.
Pull Request resolved: https://github.com/facebook/folly/pull/1051

Reviewed By: aary

Differential Revision: D14400709

Pulled By: yfeldblum

fbshipit-source-id: 73999a940f45511373d3922ea8eb782a27af0008

Summary:
When a socket is configured to read from `MSG_ERRQUEUE`, the corresponding callback handler for `errMessageCallback_->errMessage(*cmsg)` may close the socket when processing a message.

If this happens, `fd_` will be set to -1 (reinitialized) and subsequent calls to `netops::recvmsg(fd_, &msg, MSG_ERRQUEUE)` will fail. On the read failure, an error will be propagated via `failErrMessageRead(__func__, ex)`. This quickly becomes confusing -- you end up with an error message `::recvmsg exited with code 9` (EBADF) with little context.

This diff adds logic to check if the socket is still open before each call to `netops::recvmsg(fd_, &msg, MSG_ERRQUEUE)`. If not, we exit out.

It's arguable that the application is at fault in this scenario instead of the library. However, I've found this problem and given the complexity, it seems like a scenario worth guarding against in the library.

Reviewed By: yfeldblum

Differential Revision: D14354115

fbshipit-source-id: 49e1efbbf6cecbe3bf6db7ee6bdfcac4c8aaa8c2

Summary: [GDB] Migrate `gdb/scripts/` to `platform007`.

Reviewed By: pixelb

Differential Revision: D14400956

fbshipit-source-id: 59f800c8770fae78ffd51d33161bb56dc6c9ff12

Summary:
- Replace `Uncvref` alias template with `folly::remove_cvref_t` from
  `folly/Traits.h` which does the same thing.
Pull Request resolved: https://github.com/facebook/folly/pull/1047

Reviewed By: Orvid

Differential Revision: D14395552

Pulled By: yfeldblum

fbshipit-source-id: 10ac4fbadbd20876fda4957f9a85454ad6c8a994

Summary: Fix SignalHandlerTest signal handler output parsing since we do not need to print the "maybe from PID" message

Reviewed By: yfeldblum, mjoras

Differential Revision: D14399778

fbshipit-source-id: a5192c0427fa79479218ebb4671dee4164448111

Summary:
- the test was disabled in {D2299981} (2015)
- philippv enabled `-gdwarf-aranges` in fbcode {D4013485} (2016)
- `-gdwarf-aranges` is available in clang since https://reviews.llvm.org/D1649 (2013)

Reviewed By: philippv

Differential Revision: D14398382

fbshipit-source-id: 7b6b4e7ebf86268d8bc34089b0e77dcaa5badf92

Summary: [Folly] `is_transparent`, for testing whether a hash or equal-to type marks itself as transparent.

Reviewed By: shixiao

Differential Revision: D14355772

fbshipit-source-id: 9bb0ce6f7fc177e2445d094796ae4e56d9a00e76

Summary: It should be dead now.

Reviewed By: yfeldblum

Differential Revision: D14350795

fbshipit-source-id: 30a021c0180b73b9d76e34722353c4e65e1c98f8

Summary:
CMake allows the user to add additional compilation options using
CXXFLAGS= or -DCMAKE_CXX_FLAGS=. For example, each of the following
commands would enable GCC security features in generated code:

    $ CXXFLAGS=-fstack-protector-strong cmake .
    $ cmake -DCMAKE_CXX_FLAGS=-fstack-protector-strong .

Unfortunately, this doesn't work with folly's build system; CXXFLAGS and
CMAKE_CXX_FLAGS are ignored. This makes it harder for package managers
to tweak folly's compilation.

Teach folly to respect user-supplied compiler flags instead of
overriding them.
Pull Request resolved: https://github.com/facebook/folly/pull/1046

Reviewed By: wez

Differential Revision: D14383310

Pulled By: yfeldblum

fbshipit-source-id: a6c527fa1659b93bb88a4e0be617a5d9022489dd

Summary: We are getting SIGILLs that end up not printing a code because it's not in the cases in `signal_reason`, which isn't particularly helpful. Additionally, the check for kernel-sourced si_codes is incorrect. Any code > 0 is from the kernel. This causes folly to log nonsense PIDs and UIDs.

Differential Revision: D14388102

fbshipit-source-id: 3201a16bbe9eb9038ebc5601044406f5333ec9e9

Summary:
folly dynamic "double / int" (division, same goes for subtraction) results in the operands switching places (always becomes "int / double") due to int and non-int checking logic.

Same applies to addition and multiplication, but order doesn't matter for those.

If both dynamics are doubles or both are ints, then the problematic logic is bypassed.

So this is only when you have one int and one double, and the int comes second, and the operand is subtraction or division.

Reviewed By: yfeldblum

Differential Revision: D14379896

fbshipit-source-id: e76f1fe677fc4ea69856649ab046a5080a902b0d

Summary: Exposing this counter allows us to fairly divide the memory usage of shared IOBuf buffers among all the owners in memory-usage tracking code.

Reviewed By: simpkins

Differential Revision: D14361976

fbshipit-source-id: 73c63c473b117198786143b421c6fcb8aed684d5

Summary: The file descriptor backed version will be going away.

Reviewed By: yfeldblum

Differential Revision: D14235700

fbshipit-source-id: 990b0276b085e6bb88bf3bdb83cdeba332f75ac6

Summary: The tests were accidentally checked in without the cmake build rules to build them.

Reviewed By: kevinlewi

Differential Revision: D14277667

fbshipit-source-id: 5e0ff305341772232579bbde2dfc60477b4f1937

Summary:
ssize_t is not standard, so include <sys/types.h>. (I considered
switching to intptr_t but decided against it.)

Also, on macOS, the function appears to be called backtrace, not
unw_backtrace.

Reviewed By: yfeldblum

Differential Revision: D14307252

fbshipit-source-id: d919bd37fea8f68b5d610e771e577c8ce385f6ec