Commit Graph

11 Commits

Author SHA1 Message Date
Eric Fiselier
76c3a05cd1 Add "FLAKY_TEST" test directive to support re-running flaky tests.
Some of the mutex tests fail on machines with high load. This patch implements
the test directive "// FLAKY_TEST" which allows a test to be run 3 times
before it's considered a failure.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@280050 91177308-0d34-0410-b5e6-96231b3b80d8
2016-08-30 01:46:43 +00:00
Eric Fiselier
c382dd0cd1 Move native_handle thread tests to test/libcxx
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@273341 91177308-0d34-0410-b5e6-96231b3b80d8
2016-06-22 00:21:50 +00:00
Asiri Rathnayake
a3eac518e6 [libcxx] Improve tests to use the UNSUPPORTED lit directive
Quite a few libcxx tests seem to follow the format:
 #if _LIBCPP_STD_VER > X
   // Do test.
 #else
   // Empty test.
 #endif
We should instead use the UNSUPPORTED lit directive to exclude the test on
earlier C++ standards. This gives us a more accurate number of test passes
for those standards and avoids unnecessary conflicts with other lit
directives on the same tests.

Reviewers: bcraig, ericwf, mclow.lists

Differential revision: http://reviews.llvm.org/D20730

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@271108 91177308-0d34-0410-b5e6-96231b3b80d8
2016-05-28 08:57:35 +00:00
Richard Barton
037efda0ac Guard a number of tests relying on threads support when built in
single-threaded mode.

Differential Revision: http://reviews.llvm.org/D14731



git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@264191 91177308-0d34-0410-b5e6-96231b3b80d8
2016-03-23 21:04:11 +00:00
Eric Fiselier
d95ca09be4 Attempt to prevent flaky thread.mutex tests by once again increasing timing tolerances
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@248993 91177308-0d34-0410-b5e6-96231b3b80d8
2015-10-01 08:34:37 +00:00
Eric Fiselier
db8a5fd864 Refactor flaky shared_mutex tests
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@246055 91177308-0d34-0410-b5e6-96231b3b80d8
2015-08-26 19:04:40 +00:00
Eric Fiselier
7bcd5704d9 Refactor and fix more flaky shared_mutex tests
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@245918 91177308-0d34-0410-b5e6-96231b3b80d8
2015-08-25 01:28:52 +00:00
Marshall Clow
abadb458d0 Implement N4508: shared_mutex. Reviewed as http://reviews.llvm.org/D10480
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@241067 91177308-0d34-0410-b5e6-96231b3b80d8
2015-06-30 14:04:14 +00:00
Marshall Clow
f54ca46a7b Change #ifdefs in test to UNSUPPORTED. No functionality change in the tests
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@239562 91177308-0d34-0410-b5e6-96231b3b80d8
2015-06-11 21:47:39 +00:00
Eric Fiselier
1d55ecf513 [libcxx] Fix bug in shared_timed_mutex that could cause a program to hang.
Summary:
The summary of the bug, provided by Stephan T. Lavavej:

In shared_timed_mutex::try_lock_until() (line 195 in 3.6.0), you need to deliver a notification.  The scenario is:
 
* There are N threads holding the shared lock.
* One thread calls try_lock_until() to attempt to acquire the exclusive lock.  It sets the "I want to write" bool/bit, then waits for the N readers to drain away.
* K more threads attempt to acquire the shared lock, but they notice that someone said "I want to write", so they block on a condition_variable.
* At least one of the N readers is stubborn and doesn't release the shared lock.
* The wannabe-writer times out, gives up, and unsets the "I want to write" bool/bit.
 
At this point, a notification (it needs to be notify_all) must be delivered to the condition_variable that the K wannabe-readers are waiting on.  Otherwise, they can block forever without waking up.



Reviewers: mclow.lists, jyasskin

Reviewed By: jyasskin

Subscribers: jyasskin, cfe-commits

Differential Revision: http://reviews.llvm.org/D8796

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@233944 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-02 21:02:06 +00:00
Eric Fiselier
a90c6dd460 Move test into test/std subdirectory.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224658 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-20 01:40:03 +00:00