Like we do in libc++, PSTL needs the ability to constrain
ABI-unstable symbols to each translation unit. This is OFF by
default (like for libc++), because most people don't care about
this and there is a cost associated to enabling the option (code
bloat because templates are not deduped across TUs).
I'm using '#pragma clang attribute push' to avoid marking each
declaration with an attribute, which quickly becomes difficult
to maintain.
llvm-svn: 368684
Instead of silently falling back to the serial backend, it's better if
we fail loudly when the parallel backend is left unspecified. Since we
have a __pstl_config_site header, a backend should always be specified.
llvm-svn: 368285
This commit adds a __pstl_config_site header that contains the value of
macros specified at CMake configuration time. It works similarly to
libc++'s __config_site header, except we always include it as a separate
file instead of concatenating it to the main configuration header.
It is necessary to thread the includes for that header into libc++'s
lit configuration, otherwise we'd be requiring an installation step
prior to running the test suite.
llvm-svn: 368284
For the few (currently four) headers that make up the PSTL's interface
to other Standard Libraries, provide a stable uglified header file that
can be included by those Standard Libraries.
We can then more easily change the internal organization of the PSTL
without having to change the integration with Standard Libraries.
llvm-svn: 368088
Previously the code used "using namespace __pstl;" at block
scope to introduce these names. This could cause conflicts with
names defined by the standard library. So we should fully qualify
them instead.
llvm-svn: 367468
Also, use a single point of customization to set what namespace __par_backend
"points to", which provides a better separation of concerns.
llvm-svn: 365337
This is a stopgap measure to make it easier to integrate the PSTL into
libc++. In the future, we should have a system similar to what libc++
does, where we specify settings at configuration time and generate a
__config_site header that is part of the PSTL.
llvm-svn: 363958
Mostly unused parameter, unused local typedefs and shadowed declarations.
This massaging it necessary if we want to be able to run the tests under
the libc++ lit configuration.
llvm-svn: 363872
Summary:
A modification of the parallel sorting algorithm, additionally optimized for a partially sorted array.
Reviewers: rodgert
ldionne
Differential Revision: https://reviews.llvm.org/D59925
llvm-svn: 362678
- unused parameter warnings
- don't use single-letter template parameter names, like we do in libc++
- sign-comparison warnings
- unused variables in the tests
- unused local typedefs in the tests
- the use of #include_next
- field reordering in the tests
- unused lambda captures
Note that the rationale for why the static_casts to unsigned are OK is
that last - first must always be non-negative, since [first, last) is
a valid range.
llvm-svn: 362148
Summary:
Before this change, the default backend was TBB but one could disable
anything related to TBB by removing the parallel policies. This change
uses the serial backend by default and removes the ability to disable
parallel policies, which is not useful anymore.
Reviewers: rodgert, MikeDvorskiy
Subscribers: mgorny, jkorous, dexonsmith, jdoerfert, libcxx-commits
Differential Revision: https://reviews.llvm.org/D59792
llvm-svn: 359134
Summary:
The serial backend performs all tasks serially and does not require
threads. It does not have any dependencies beyond normal C++, but
it is not very efficient either.
Reviewers: rodgert, MikeDvorskiy
Subscribers: mgorny, jkorous, dexonsmith, jdoerfert, libcxx-commits
Differential Revision: https://reviews.llvm.org/D59791
llvm-svn: 358700
Summary:
PSTL should not provide those headers since they belong to the standard
library. Instead, we define a dummy standard library in the tests that
provides those headers.
Reviewers: rodgert, MikeDvorskiy
Subscribers: mgorny, jkorous, dexonsmith, libcxx-commits
Tags: #libc
Differential Revision: https://reviews.llvm.org/D60535
llvm-svn: 358497
When an execution policy is provided, we attempt to run std::equal in
parallel instead of always doing it serially.
Thanks to Mikhail Dvorskiy for the patch.
Differential Revision: https://reviews.llvm.org/D59813
llvm-svn: 357613
Summary:
Indenting preprocessor directives provides a significant gain in
readability. We do it for normal if statements, and it makes sense
to do it for preprocessor ifs too.
Reviewers: rodgert, MikeDvorskiy
Subscribers: jkorous, dexonsmith, jdoerfert, libcxx-commits
Differential Revision: https://reviews.llvm.org/D59767
llvm-svn: 357401
This guards against unintended ADL issues.
Thanks to Thomas Rogers for the patch.
Differential Revision: https://reviews.llvm.org/D60009
llvm-svn: 357306
Necessary when pstl is included from with <algorithm> and <numeric> to
prevent a partially declared standard library when pstl itself uses
algorithms from <algorithm> and <numeric>.
Also, this patch makes sure that configuration comes via standard headers.
Directly including pstl_config.h in implementation files is incompatible
with inclusion of pstl into a standard library implementation which
provides it's own library wide configuration and may configure the
library differently to the pstl_config.h used by the standalone
implementation.
Differential Revision: https://reviews.llvm.org/D59122
llvm-svn: 357189
There were multiple warnings for lambda captures that are unused, so
I removed those captures. I also fixed a couple of -Wsign-compare
warnings. Note that some warnings still remain, this change is not
exhaustive.
llvm-svn: 354148
to reflect the new license. These used slightly different spellings that
defeated my regular expressions.
We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.
Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.
llvm-svn: 351648
Summary:
Recent Clangs give an error for this. Note that the size of this diff is
caused by running clang-format on the result of removing the captures.
I guess we'll see how well that works for us.
Reviewers: jfb, rodgert
Subscribers: jkorous, dexonsmith, libcxx-commits, mclow.lists
Differential Revision: https://reviews.llvm.org/D55945
llvm-svn: 350544
Louis Dionne