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Author SHA1 Message Date
Jason Molenda 2fd83355a8 Change the Mac OS X SystemRuntime plugin from using the placeholder 
libldi library to collect extended backtrace information; switch
to the libBacktraceRecording library and its APIs.  Complete the
work of adding QueueItems to Queues and allow for the QueueItems
to be interrogated about their extended backtraces in turn.

There's still cleanup and documentation to do on this code but the
code is functional and I it's a good time to get the work-in-progress 
checked in.  
<rdar://problem/15314027> 

llvm-svn: 200822
 2014-02-05 05:44:54 +00:00
Jason Molenda b97f44d9ef Fix how Queue/QueueItem weak pointers are initialized in the ctors. 
llvm-svn: 197541
 2013-12-18 00:58:23 +00:00
Jason Molenda 5e8dce4dbf Add new Queue, QueueItem, Queuelist, SBQueue, SBQueueItem classes to represent 
libdispatch aka Grand Central Dispatch (GCD) queues.  Still fleshing out the
documentation and testing of these but the overall API is settling down so it's
a good time to check it in.
<rdar://problem/15600370> 

llvm-svn: 197190
 2013-12-13 00:29:16 +00:00