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Commit Graph

12 Commits

Author SHA1 Message Date
Benjamin Kramer
6748fa3a23 Revert "[C++11] Replace LLVM atomics with std::atomic."
Breaks the MSVC build.
DataStream.cpp(44): error C2552: 'llvm::Statistic::Value' : non-aggregates cannot be initialized with initializer list

llvm-svn: 202731
2014-03-03 18:02:34 +00:00
Benjamin Kramer
d55423bf4c [C++11] Replace LLVM atomics with std::atomic.
With C++11 we finally have a standardized way to specify atomic operations. Use
them to replace the existing custom implemention. Sadly the translation is not
entirely trivial as std::atomic allows more fine-grained control over the
atomicity. I tried to preserve the old semantics as well as possible.

Differential Revision: http://llvm-reviews.chandlerc.com/D2915

llvm-svn: 202730
2014-03-03 17:53:30 +00:00
Nick Lewycky
53185e9016 Add support for tsan annotations (thread sanitizer, a valgrind-based tool).
These annotations are disabled entirely when either ENABLE_THREADS is off, or
building a release build. When enabled, they add calls to functions with no
statements to ManagedStatic's getters.

Use these annotations to inform tsan that the race used inside ManagedStatic
initialization is actually benign. Thanks to Kostya Serebryany for helping
write this patch!

llvm-svn: 144567
2011-11-14 20:50:16 +00:00
Michael J. Spencer
d5ec932c3a Merge System into Support.
llvm-svn: 120298
2010-11-29 18:16:10 +00:00
Owen Anderson
b7cdd1a395 Split the thread-related APIs out into their own file, and add a few more
calls for convenience.

llvm-svn: 73512
2009-06-16 17:33:51 +00:00
Bill Wendling
8235a05c1a Untabification.
llvm-svn: 72604
2009-05-30 01:09:53 +00:00
Owen Anderson
4f6709ebd6 Have llvm_start_multithreaded return a bool indicating whether multithreaded
initialization succeeded or not, rather than just asserting.

llvm-svn: 72182
2009-05-20 21:03:06 +00:00
Owen Anderson
47460293cf Add llvm_start_multithreaded(), which starts up the LLVM internals in thread-safe mode. Provide double-check locking
initialization of ManagedStatic's when running in thread-safe mode.

llvm-svn: 72151
2009-05-20 00:39:20 +00:00
Chris Lattner
ad9a6ccb83 Remove attribution from file headers, per discussion on llvmdev.
llvm-svn: 45418
2007-12-29 20:36:04 +00:00
Chris Lattner
b22fb7fc60 Not all managedstatics need object pointers.
llvm-svn: 34444
2007-02-20 06:18:57 +00:00
Chris Lattner
1d0cc59e5b Define this in the correct n/s
llvm-svn: 30671
2006-09-29 18:43:14 +00:00
Chris Lattner
30da1ba0a2 new helper class to provide more explicit management of static ctor/dtors.
llvm-svn: 30638
2006-09-28 00:31:55 +00:00