Add missing FileUtil functions (p?readvFull, p?writevFull) , add test
Summary:
Testing incomplete reads / writes is hard, so I'm only testing the wrappers
(template functions that take the underlying operation and retry it in
case of incomplete operations). Note the cute hack of using variadic
templates to use the same wrapper for both file pointer- and explicit-position
flavors of the functions (the offset argument becomes optional).
Test Plan: test added
Reviewed By: lucian@fb.com
FB internal diff:
D806781
projects / folly.git / commit