Summary: I have no idea why this specific declaration would error, or if there is a difference in meaning, but this fixes MSVC's absurd parser error.
Closes #277

Reviewed By: @yfeldblum

Differential Revision: D2284096

Summary: Improves MSVC support.
Closes #274

Note that this diff has been heavily modified from @Orvid's original PR by @yfeldblum and @sgolemon

Reviewed By: @yfeldblum

Differential Revision: D2284035

Pulled By: @sgolemon

Summary: Closes #264

Modified by @sgolemon from the original PR to declare MSVC2015-final as the official minimum version, making the defines in the original PR unnecessary.

Reviewed By: @yfeldblum

Differential Revision: D2284130

Pulled By: @sgolemon

Summary: There are a bunch of methods in `folly::dynamic` that return a
reference to a sub-object, e.g. `getString()`.
These methods are a bit unsafe because it allows you to write code with dangling
references when the `folly::dynamic` object is an rvalue:

  auto& obj = parse_json(some_string).at("key");

However, the bigger win is that when we have an rvalue `folly::dynamic`, such as
returned by `getDefault(...)`, we can move the sub-object out:

  auto obj = parse_json(some_string).at("key");
  auto str = obj.getDefault("another-key", "").getString();

In the first line, the subobject is copied out when it could be safely moved out.
In the second line `getDefault(...)` copies the dynamic sub-object out, and then
`getString()` copies the string out, when the string could be moved.

Also in the case of `getDefault()` being called on a rvalue, we can move the
sub-object out.

Reviewed By: @marcinpe

Differential Revision: D2267588

Summary: remove unnecessary stuff

Reviewed By: @siyengar

Differential Revision: D2284095

Summary: Add accessor to estimate a FiberManager's run queue size

Reviewed By: @sarangbh

Differential Revision: D2293367

Reviewed By: @yfeldblum

Differential Revision: D2300047

Summary: Various fixes to get tests passing using buck's dev mode.

Reviewed By: @yfeldblum

Differential Revision: D2299981

Summary: [Folly] futures::retrying.

Reviewed By: @fugalh

Differential Revision: D2201630

Summary: enum iterators operator!= didn't use the iterator parameter for comparison
because they assumed you only ever compare to end. Change the operator!= to
look at the iterator parameter to check if it was end.

Thrift generated code for reflection initializers for some types that weren't
declared before definition because they were never called outside of the file.
Marked those initializers as 'static'.

Reviewed By: @alandau

Differential Revision: D2284371

Summary: This has come up a couple times, and the implementation is never nice.  Just like we have thread-local storage, it will be useful to also have evb-local storage.  Provides at pretty simple get/set/delete interface (see unittest).

Reviewed By: @djwatson

Differential Revision: D2203063

Summary: folly only accepts "Infinity" while deserializing but writes "infinity" when serializing.
This means folly cannot deserialize what it serialized before.
If we agree on this, we could update ##fbcode/common## as well: https://fburl.com/136793901

Reviewed By: @marcinpe

Differential Revision: D2293627

Summary: This `typename` qualifier was unneeded, and MSVC errors if it's there, so remove it.
Closes #275

Reviewed By: @yfeldblum

Differential Revision: D2284056

Pulled By: @sgolemon

Summary: MSVC doesn't support constructor priorities, so use the same code as OSX.
Closes #272

Reviewed By: @yfeldblum

Differential Revision: D2283998

Pulled By: @sgolemon

Summary: Support for this under mingw was already present, this just uses that for MSVC as well.
Closes #273

Reviewed By: @yfeldblum

Differential Revision: D2284007

Pulled By: @sgolemon

Summary: Specifically, MSVC doesn't define `std::__ostream_insert`, so just write to the stream instead.
Closes #270

Reviewed By: @yfeldblum

Differential Revision: D2283960

Pulled By: @sgolemon

Summary: Because MSVC doesn't support `__thread`, and `FOLLY_TLS` is already setup to use the MSVC syntax when needed.
Closes #269

Reviewed By: @yfeldblum

Differential Revision: D2283919

Pulled By: @sgolemon

Summary: This adds `asm_volatile_memory`, which goes along with the same style used by `asm_volatile_pause`.
This also switches the two places in `RWSpinLock.h` that were using inline assembly for this to use the new functions instead.
Closes #260

Reviewed By: @yfeldblum

Differential Revision: D2283541

Pulled By: @sgolemon

Summary: This adds `FOLLY_ALIGNED` to `Portability.h`, and adjusts the places that were previously using the raw aligned attribute to use this instead.

Closes #262

Reviewed By: @yfeldblum

Differential Revision: D2283639

Pulled By: @sgolemon

Summary: With MSVC, `seedData.begin()` does not return a `void*`, so get a pointer to the data, and explicitly cast that to a `void*` instead.
Closes #251

Reviewed By: @yfeldblum

Differential Revision: D2282929

Pulled By: @sgolemon

Summary: This implements it via a function called on startup. The mechanism used is roughly equivelent of `__attribute__((__constructor__))` in that it doesn't have the ability to set the order of invokation.
Closes #249

Reviewed By: @yfeldblum

Differential Revision: D2282860

Pulled By: @sgolemon

Summary: Before this change you would get an error like:
"Expected to get greater than or equal to1 for value 0"

Now it add in the space correctly:
"Expected to get greater than or equal to 1 for value 0"

Reviewed By: @snarkmaster

Differential Revision: D2288454

Summary: exit() is evil, let's make it easier for programs that want to exit
successfully.

Reviewed By: @meyering

Differential Revision: D2290201

Summary: This diff adds partial specializations of folly::hasher for enum types, std::pair and std::tuple.
We also restrict the specialization for folly::Range to POD value types.

Reviewed By: @ot, @ddrcoder

Differential Revision: D2285554

Summary: [Folly] Fix Build: FOLLY_SSE and preprocessor floats.

Float values for preprocessor symbols are not a thing.

Reviewed By: @​fyan

Differential Revision: D2289436

Summary: This diff fixes the helper template ReturnValue to enable using of applyTuple with
constant refs.

Reviewed By: @ot, @ddrcoder

Differential Revision: D2284733

Summary: Also fix URLs hand-modified by D2219135 which didn't quite update them enough.
Point them at the new repo.

Reviewed By: @yfeldblum

Differential Revision: D2285053

Summary: MSVC will just produce syntax errors if these are left where they currently are. GCC and LLVM support them in either location with the same meaning.
Closes #267

Reviewed By: @yfeldblum

Differential Revision: D2283889

Pulled By: @sgolemon

Summary: Closes #266

Reviewed By: @yfeldblum

Differential Revision: D2283774

Pulled By: @sgolemon

Summary: Closes #261

Reviewed By: @yfeldblum

Differential Revision: D2283554

Pulled By: @sgolemon

Summary: This adds MSVC support for `FOLLY_DEPRECATED`.
Closes #257

Reviewed By: @yfeldblum

Differential Revision: D2283484

Pulled By: @sgolemon

Summary: This unifies ways of detecting SSE support into the FOLLY_SSE define which is a numeric value from 0 to 4.2 depending on detected level.
This also adds a `#define` for `__extension__` which is used in folly, but is GCC specific.
Closes #259

Reviewed By: @yfeldblum

Differential Revision: D2283522

Pulled By: @sgolemon

Summary: This adds MSVC support for `FOLLY_FINAL` and `FOLLY_OVERRIDE`.
Closes #258

Reviewed By: @yfeldblum

Differential Revision: D2283502

Pulled By: @sgolemon

Summary: This adds MSVC support to the detection of FOLLY_HAS_RTTI.
Closes #255

Reviewed By: @yfeldblum

Differential Revision: D2283036

Pulled By: @sgolemon

Summary: Update the internal lambda to mutable to support mutable lambdas as
parameters to Future::ensure()

Reviewed By: @yfeldblum

Differential Revision: D2286097

Summary: MSVC complains if these are not there.
Closes #248

Reviewed By: @yfeldblum

Differential Revision: D2282845

Pulled By: @sgolemon

Summary: MSVC supports the intrinsics used by it without any issue other changes, so just make sure the error doesn't trigger on MSVC.
Closes #252

Reviewed By: @yfeldblum

Differential Revision: D2282942

Pulled By: @sgolemon

Summary: This implements support for `asm_volatile_pause` and `asm_pause`, as defined in `Portability.h`, for MSVC.
This is needed because MSVC x64 doesn't support inline assembly.
Closes #254

Reviewed By: @yfeldblum

Differential Revision: D2283006

Pulled By: @sgolemon

Summary: Noticed because of a warning emitted by MSVC, this fixees the literal for `kLockedPtr_` to correctly be 64-bits under MSVC, rather than 32-bit.
Closes #245

Reviewed By: @yfeldblum

Differential Revision: D2282806

Pulled By: @sgolemon

Summary: MSVC defaults enum sizes to int, so explicitly use `size_t` as the base to have it correctly sized.
Closes #246

Reviewed By: @yfeldblum

Differential Revision: D2282816

Pulled By: @sgolemon