openbsd/src/lib/libc/include/thread_private.h, branch OPENBSD_6_8_BASE

New futex(2) based rwlock implementation based on the mutex code.

2019-02-13T13:22:14+00:00

This implementation reduces contention because threads no longer need to spin calling sched_yield(2) before going to sleep. Tested by many, thanks! ok visa@, pirofti@

Make the "not my pool" searching loop a tiny bit smarter, while

2019-01-10T18:45:33+00:00

making the number of pools variable. Do not document the malloc conf settings atm, don't know yet if they will stay. Thanks to all the testers. ok deraadt@

Implement __cxa_thread_atexit to support C++11 thread_local scope. The

2017-12-05T13:45:31+00:00

interface is also made available as __cxa_thread_atexit_impl to satisfy the needs of GNU libstdc++. ok guenther@, millert@

Revert recent changes to unbreak ports/net/samba

2017-11-04T22:53:57+00:00

While it is not clear (to me) why that ports ends up with corrupted shared libs, reverting those changes fixes the issue and should allow us to close p2k17 more smoothly. Discussed with a bunch, ok ajacoutot@ guenther@

Change pthread_cleanup_{push,pop} to macros that store the cleanup info

2017-10-28T21:23:14+00:00

on the stack instead of mallocing the list and move the APIs from libpthread to libc so that they can be used inside libc. Note: the standard was explicitly written to permit/support this "macro with unmatched brace" style and it's what basically everyone else already does. We xor the info with random cookies with a random magic to detect/trip-up overwrites. Major bump to both libc and libpthread due to the API move. ok mpi@

Move mutex, condvar, and thread-specific data routes, pthread_once, and

2017-09-05T02:40:54+00:00

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@

Wrap _malloc_init() so internal calls go directly

2016-10-15T18:24:40+00:00

prodded by otto@ ok kettenis@ otto@

Less lock contention by using more pools for mult-threaded programs.

2016-09-01T10:41:02+00:00

tested by many (thanks!) ok tedu, guenther@

Use a Thread Information Block in both single and multi-threaded programs.

2016-05-07T19:05:22+00:00

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 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@

Make pthread_atfork() track the DSO that called it like atexit() does,

2015-04-07T01:27:07+00:00

unregistering callbacks if the DSO is unloaded. Move the callback handling from libpthread to libc, though libpthread still overrides the inner call to handle locking and thread-library reinitialization. Major version bump for both libc and libpthread. verification that this fixes various ports ajacoutot@ asm assistance miod@; ok millert@ deraadt@