cmdserver: write channel header and payload by a single write() call This makes a channeledoutput thread-safe as long as the underlying fwrite() is thread-safe. Both POSIX and Windows implementations are documented as MT-safe. MT-safety is necessary to use ui.fout and ui.ferr in hgweb.

histedit: use ui.fin to read commands from stdin stdin is wrapped by channeledinput in command-server session.

convert: have debugsvnlog obtain standard streams from ui This will help porting to Python 3, where sys.stdin/out/err are unfortunately unicode streams so we can't use them directly.

convert: remove superfluous setbinary() calls from debugsvnlog a3fe91b4f6eb made standard streams set to binary mode globally.

tests: explicitly use ls profiler In preparation for making the statprof profiler the default.

statprof: pass data structure to display functions Currently, statprof maintains a global "state" variable that is used by several functions. Global variables hinder adaptability of code. So pass state to display functions so we can make changes to how "state" works in future patches.

statprof: use print function

statprof: use absolute_imports As part of this, we modify import order to satisfy our import checker.

statprof: require paths to save or load profile data Upstream appears to aggressively save statprof data in a well-defined home directory path. Change the code to not do that. We also change file saving to fail if an error has occurred instead of silently failing. Callers can catch the exception. This behavior is more suitable for a generic "library" module.

statprof: fix flake8 warnings My local flake8 hook informed me of these warnings in the upstream code. Fix them.