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Mehdi Amini 33a7ea4b9a Add a C++11 ThreadPool implementation in LLVM 
This is a very simple implementation of a thread pool using C++11
thread. It accepts any std::function<void()> for asynchronous
execution. Individual task can be synchronize using the returned
future, or the client can block on the full queue completion.

In case LLVM is configured with Threading disabled, it falls back
to sequential execution using std::async with launch:deferred.

This is intended to support parallelism for ThinLTO processing in
linker plugin, but is generic enough for any other uses.

This is a recommit of r255444 ; trying to workaround a bug in the
MSVC 2013 standard library. I think I was hit by:

 http://connect.microsoft.com/VisualStudio/feedbackdetail/view/791185/std-packaged-task-t-where-t-is-void-or-a-reference-class-are-not-movable

Recommit of r255589, trying to please g++ as well.

Differential Revision: http://reviews.llvm.org/D15464

From: mehdi_amini <mehdi_amini@91177308-0d34-0410-b5e6-96231b3b80d8>
llvm-svn: 255593
 		2015-12-15 00:59:19 +00:00
..
ADT Handle ARMv6-J as an alias, instead of fake architecture 2015-11-20 16:46:09 +00:00
Analysis [AA] Enhance the new AliasAnalysis infrastructure with an optional 2015-10-21 12:15:19 +00:00
AsmParser Fix PR 24633 - Handle undef values when parsing standalone constants. 2015-09-09 13:44:33 +00:00
Bitcode Fix memory leak in unit test of Bitcode/BitReaderTest.cpp 2015-08-03 21:23:51 +00:00
CodeGen AsmPrinter: Use an intrusively linked list for DIE::Children 2015-06-25 23:52:10 +00:00
DebugInfo Fix compilation of PDBApiTest. 2015-05-01 20:51:49 +00:00
ExecutionEngine [Orc] Removing traces of takeOwnershipOfBuffers left after r251560. 2015-12-07 17:35:56 +00:00
IR add fast-math-flags to 'call' instructions (PR21290) 2015-12-14 21:59:03 +00:00
LineEditor Use 'override/final' instead of 'virtual' for overridden methods 2015-04-11 02:11:45 +00:00
Linker Use diagnostic handler in the LLVMContext 2015-12-14 23:17:03 +00:00
MC Add a RAW mode to StringTableBuilder. 2015-10-23 21:48:05 +00:00
Option [Option] Use an ArrayRef to store the Option Infos in OptTable. NFC 2015-10-21 16:30:42 +00:00
ProfileData [ProfileData] Add unit test infrastructure for sample profile reader/writer 2015-12-10 17:21:42 +00:00
Support Add a C++11 ThreadPool implementation in LLVM 2015-12-15 00:59:19 +00:00
Transforms Return a std::unique_ptr from CloneModule. NFC. 2015-12-08 23:57:17 +00:00
CMakeLists.txt AsmParser: Require a terminating null character when creating memory buffer. 2015-05-20 20:41:27 +00:00
Makefile AsmParser: Require a terminating null character when creating memory buffer. 2015-05-20 20:41:27 +00:00
Makefile.unittest With rpaths being set correctly, SHLIBPATH_VAR is not needed anymore. 2014-02-28 16:16:51 +00:00