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* Move mutex, condvar, and thread-specific data routes, pthread_once, andguenther2017-09-051-25/+0
| | | | | | | | pthread_exit from libpthread to libc, along with low-level bits to support them. Major bump to both libc and libpthread. Requested by libressl team. Ports testing by naddy@ ok kettenis@
* Use a Thread Information Block in both single and multi-threaded programs.guenther2016-05-071-49/+0
| | | | | | | | | | | | | | | | | This stores errno, the cancelation flags, and related bits for each thread and is allocated by ld.so or libc.a. This is an ABI break from 5.9-stable! Make libpthread dlopen'able by moving the cancelation wrappers into libc and doing locking and fork/errno handling via callbacks that libpthread registers when it first initializes. 'errno' *must* be declared via <errno.h> now! Clean up libpthread's symbol exports like libc. On powerpc, offset the TIB/TCB/TLS data from the register per the ELF spec. Testing by various, particularly sthen@ and patrick@ ok kettenis@
* cleanup and consolidate the spinlock_lock (what a name!) code.tedu2013-06-011-6/+6
| | | | | | | | | | it's now atomic_lock to better reflect its usage, and librthread now features a new spinlock that's really a ticket lock. thrlseep can handle both types of lock via a flag in the clock arg. (temp back compat hack) remove some old stuff that's accumulated along the way and no longer used. some feedback from dlg, who is concerned with all things ticket lock. (you need to boot a new kernel before installing librthread)
* tfork_thread has been moved to libcguenther2012-03-221-122/+0
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* Reimplement mutexes, condvars, and rwlocks to eliminate bugs,guenther2012-01-171-2/+2
| | | | | | | | | | | | | particularly the "consume the signal you just sent" hang, and putting the wait queues in userspace. Do cancellation handling in pthread_cond_*wait(), pthread_join(), and sem_wait(). Add __ prefix to thr{sleep,wakeup,exit,sigdivert}() syscalls; add 'abort" argument to thrsleep to close cancellation race; make thr{sleep,wakeup} return errno values via *retval to avoid touching userspace errno.
* Use __tfork, __get_tcb, and __set_tcb to have a real TCB and per-threadguenther2011-10-172-5/+54
| | | | | errno. The ASM bits for _cerror are sketchy or missing for some archs but that can be corrected in-tree.
* Sync with amd64, to allow this to compile without warnings with gcc4:miod2010-12-031-6/+6
| | | | | | ``Correct the _atomic_lock() asm so that gcc accepts the constraints when compiling without optimization; fix copied from the kernel's atomic.h'' spotted by jim@
* rfork_thread() lacked PIC handling for CERROR, resulting in a text relocationguenther2009-09-271-1/+8
| | | | pointed out by brad, ok djm@
* Use the system include <spinlock.h> to get the proper functionmarc2006-01-051-2/+2
| | | | prototype for _atomic_lock
* put the error handling jump code back in from brad/marcotedu2005-12-251-13/+2
| | | | call right sycall after threadfn return
* add userland thread library. incomplete, but functionaltedu2005-12-032-0/+151
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