3 Commits

Author	SHA1	Message	Date
Devin Coughlin	c9bc783eed	[Runtime] Remove an unneeded dispatch_once() in Availability.mm ... Following Dmitri's advice, remove an unneeded dispatch_once() and use an initializer of a function-local static variable instead. NFC. Swift SVN r27516	2015-04-21 03:41:10 +00:00
Devin Coughlin	857a60dea1	Runtime: Cache OS version for availability in a thread-safe manner. ... On OS X 10.9 and iOS 7 the runtime support for #availability was reading the system plist on every query. Now, use dispatch_once to cache the results of the expensive plist lookup ourselves. rdar://problem/18471069 Swift SVN r27199	2015-04-10 02:24:32 +00:00
Dmitri Hrybenko	350248dae5	Reorganize the directory structure under 'stdlib' ... The standard library has grown significantly, and we need a new directory structure that clearly reflects the role of the APIs, and allows future growth. See stdlib/{public,internal,private}/README.txt for more information. Swift SVN r25876	2015-03-09 05:26:05 +00:00