3 Commits

Author	SHA1	Message	Date
Carlos O'Donell	042e1521c7	Fix semaphore destruction (bug 12674). ... This commit fixes semaphore destruction by either using 64b atomic operations (where available), or by using two separate fields when only 32b atomic operations are available. In the latter case, we keep a conservative estimate of whether there are any waiting threads in one bit of the field that counts the number of available tokens, thus allowing sem_post to atomically both add a token and determine whether it needs to call futex_wake. See: https://sourceware.org/ml/libc-alpha/2014-12/msg00155.html	2015-01-21 00:46:16 -05:00
Ulrich Drepper	9c04f7c155	Fix aliasing problem in tst-sem11.	2009-10-30 09:35:20 -07:00
Ulrich Drepper	2af4e3e566	Test of semaphores.	2007-05-26 01:23:04 +00:00