src-test2/lib/libpthread/sys/lock.c, branch release/5.3.0 FreeBSD source tree https://cgit-dev.freebsd.org/src-test2/atom?h=release%2F5.3.0 2003-11-04T20:01:38Z Add the ability to reinitialize libpthread's internal FIFO-queueing 2003-11-04T20:01:38Z Daniel Eischen deischen@FreeBSD.org 2003-11-04T20:01:38Z urn:sha1:d6b826bac7cba8bd901ca2db952bb1dc514ca79f locks. Reviewed by: davidxu Only generate code for _LCK_ASSERT if _LCK_DEBUG is defined. 2003-10-02T03:24:26Z David Xu davidxu@FreeBSD.org 2003-10-02T03:24:26Z urn:sha1:28e2ce478d04a60f22169aedfce85d93c1ed3328 Don't assume sizeof(long) = sizeof(int) on x86; use int 2003-09-03T17:56:26Z Daniel Eischen deischen@FreeBSD.org 2003-09-03T17:56:26Z urn:sha1:850108c0b4ef4545310af9b03c4a8531b8b36d55 instead of long types for low-level locks. Add prototypes for some internal libc functions that are wrapped by the library as cancellation points. Add memory barriers to alpha atomic swap functions (submitted by davidxu). Requested by: bde Change low-level locking a bit so that we can tell if 2003-05-24T02:29:25Z Daniel Eischen deischen@FreeBSD.org 2003-05-24T02:29:25Z urn:sha1:1cb570c53190e8b569091f708781c6bf9c3126c7 a lock is being waitied on. Fix a races in join and cancellation. When trying to wait on a CV and the library is not yet threaded, make it threaded so that waiting actually works. When trying to nanosleep() and we're not threaded, just call the system call nanosleep instead of adding the thread to the wait queue. Clean up adding/removing new threads to the "all threads queue", assigning them unique ids, and tracking how many active threads there are. Do it all when the thread is added to the scheduling queue instead of making pthread_create() know how to do it. Fix a race where a thread could be marked for signal delivery but it could be exited before we actually add the signal to it. Other minor cleanups and bug fixes. Submitted by: davidxu Approved by: re@ (blanket for libpthread) Add a method of yielding the current thread with the scheduler 2003-05-16T19:58:30Z Daniel Eischen deischen@FreeBSD.org 2003-05-16T19:58:30Z urn:sha1:fd626336fd97bad05a86f02b646c66d2fe14d01a lock held (_thr_sched_switch_unlocked()) and use this to avoid dropping the scheduler lock and having the scheduler retake the same lock again. Add a better way of detecting if a low-level lock is in use. When switching out a thread due to blocking in the UTS, don't switch to the KSE's scheduler stack only to switch back to another thread. If possible switch to the new thread directly from the old thread and avoid the overhead of the extra context switch. Check for pending signals on a thread when entering the scheduler and add them to the threads signal frame. This includes some other minor signal fixes. Most of this was a joint effor between davidxu and myself. Reviewed by: davidxu Approved by: re@ (blanket for libpthread) Protect against a race between granting a lock and accessing 2003-05-04T22:29:09Z Daniel Eischen deischen@FreeBSD.org 2003-05-04T22:29:09Z urn:sha1:c72cd7c9e2e07a2c466f0f61ece3cfc2e464218c other parts of the lock. Submitted by: davidxu Sorry folks; I accidentally committed a patch from what I was working 2003-04-18T07:09:43Z Daniel Eischen deischen@FreeBSD.org 2003-04-18T07:09:43Z urn:sha1:e4c2ac1637ab1039778694ccb3b91425371e0562 on a couple of days ago. This should be the most recent changes. Noticed by: davidxu Add FIFO queueing locking operations based on atomic swap. 2003-04-18T05:02:39Z Daniel Eischen deischen@FreeBSD.org 2003-04-18T05:02:39Z urn:sha1:b025fc9a31c85b9cde9969e1fea55ea4caf650d5 Modify thread errno for the new libpthread changes. Reviewed by: davidxu