3 Commits

Author	SHA1	Message	Date
Ian Lance Taylor	09ebbf4085	runtime: add read/write mutex type ... This is a runtime version of sync.RWMutex that can be used by code in the runtime package. The type is not quite the same, in that the zero value is not valid. For future use by CL 43713. Updates #19546 Change-Id: I431eb3688add16ce1274dab97285f555b72735bf Reviewed-on: https://go-review.googlesource.com/45991 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Austin Clements <austin@google.com>	2017-06-19 17:40:38 +00:00
Russ Cox	40d81cf061	sync: throw, not panic, for unlock of unlocked mutex ... The panic leaves the lock in an unusable state. Trying to panic with a usable state makes the lock significantly less efficient and scalable (see early CL patch sets and discussion). Instead, use runtime.throw, which will crash the program directly. In general throw is reserved for when the runtime detects truly serious, unrecoverable problems. This problem is certainly serious, and, without a significant performance hit, is unrecoverable. Fixes #13879. Change-Id: I41920d9e2317270c6f909957d195bd8b68177f8d Reviewed-on: https://go-review.googlesource.com/31359 Reviewed-by: Austin Clements <austin@google.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>	2016-10-19 17:46:27 +00:00
Russ Cox	c007ce824d	build: move package sources from src/pkg to src ... Preparation was in CL 134570043. This CL contains only the effect of 'hg mv src/pkg/* src'. For more about the move, see golang.org/s/go14nopkg.	2014-09-08 00:08:51 -04:00