[PATCH] Avoid invalidating successfully loaded module files

[Ben Langmuir]

    Avoid invalidating successfully loaded module files
    
    Successfully loaded module files may be referenced in other
    ModuleManagers, so don't invalidate them. Two related things are fixed:
    
    1) I thought the last module in the manager was always the one that
    failed, but it isn't.  So check explicitly against the list of
    vetted modules from ReadASTCore.
    
    2) We now keep the file descriptor of pcm file open, which avoids the
    possibility of having two different pcms for the same module loaded when
    building in parallel with headers being modified during a build.

Ben
-------------- next part --------------
A non-text attachment was scrubbed...
Name: invalidate.patch
Type: application/octet-stream
Size: 7352 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20140619/0b49cfb2/attachment.obj>