[PATCH] [asancov] Write coverage directly to a memory-mapped file

[Evgeniy Stepanov]

================
Comment at: lib/sanitizer_common/sanitizer_coverage_direct.cc:1
@@ +1,2 @@
+//===-- sanitizer_coverage_direct.cc --------------------------------------===//
+//
----------------
Kostya Serebryany wrote:
> This file deserves an extended comment. 
done

http://reviews.llvm.org/D3874