7 commits

Author	SHA1	Message	Date
Chris Lu	5d3ec22975	refactoring	2020-05-26 00:03:31 -07:00
Chris Lu	d4235afe4d	support multiple locks	2020-05-25 18:39:53 -07:00
Chris Lu	57ec7f2ba9	fix builds	2020-04-23 03:43:45 -07:00
Chris Lu	eab9701823	allow lock with an existing lock	2020-04-23 03:35:52 -07:00
Chris Lu	842e3301ee	make second lock instant	2020-04-23 03:32:18 -07:00
Chris Lu	69f336e59f	shell: add lock/unlock command	2020-04-23 03:11:07 -07:00
Chris Lu	30ee4f3291	add exclusive lock library on shell	2020-04-23 02:31:04 -07:00