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Author SHA1 Message Date
David Blaikie 626507fab3 Update the non-pthreads fallback for RWMutex on Unix 
Tested this by #if 0'ing out the pthreads implementation, which
indicated that this fallback was not currently compiling successfully
and applying this patch resolves that.

Patch by Andy Chien.

llvm-svn: 220969
 2014-10-31 17:02:30 +00:00
Mark Seaborn 552d9e49d9 Fix RWMutex to be thread-safe when pthread_rwlock is not available 
lib/Support/RWMutex.cpp contains an implementation of RWMutex that
uses pthread_rwlock, but when pthread_rwlock is not available (such as
under NaCl, when using newlib), it silently falls back to using the
no-op definition in lib/Support/Unix/RWMutex.inc, which is not
thread-safe.

Fix this case to be thread-safe by using a normal mutex.

Differential Revision: http://llvm-reviews.chandlerc.com/D2892

llvm-svn: 202570
 2014-03-01 04:30:32 +00:00
Charles Davis 54c9eb6fff Now to chant the magical incantation that will exorcise the System library 
from LLVM forever:

grep -lR "llvm/System" * | grep -v .svn | xargs sed -ie 's#llvm/System#llvm/Support#g'

llvm-svn: 120314
 2010-11-29 19:44:50 +00:00
Michael J. Spencer 447762da85 Merge System into Support. 
llvm-svn: 120298
 2010-11-29 18:16:10 +00:00