src-test/lib/libthr/thread, branch main

Ensure that threading library is initialized in pthread_mutex_init().

2020-11-30T17:00:36Z

We need at least thr_malloc ready. The situation is possible e.g. in case of libthr being listed in DT_NEEDED before some of its consumers. Reported and tested by: lev Sponsored by: The FreeBSD Foundation MFC after: 1 week

libc: Add pthread_attr_get_np(3) stub, reporting ESRCH.

2020-11-28T12:19:20Z

This seems to be required by recent clang asan. I do not see other way than put the symbol under FBSD_1.0 version. PR: 251112 Reported by: Andrew Stitcher Reviewed by: emaste Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D27389

Style.

2020-11-26T20:23:17Z

Sponsored by: The FreeBSD Foundation MFC after: 3 days

Add pthread_getname_np() and pthread_setname_np() aliases for

2020-06-10T22:13:24Z

pthread_get_name_np() and pthread_set_name_np(). This re-applies r361770 after compatibility fixes. Reviewed by: antoine, jkim, markj Tested by: antoine (exp-run) Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D25117

Revert r361770 "Add pthread_getname_np() and pthread_setname_np() aliases" for now.

2020-06-04T09:06:03Z

It is not compatible enough with Linux. Requested by: antoine, jkim Sponsored by: The FreeBSD Foundation

Add pthread_getname_np() and pthread_setname_np() aliases

2020-06-03T20:54:36Z

for pthread_get_name_np() and pthread_set_name_np(), to be compatible with Linux. PR: 238404 Proposed and reviewed by: markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D25117

Add pthread_peekjoin_np(3).

2020-02-15T23:25:39Z

The function allows to peek at the thread exit status and even see return value, without joining (and thus finally destroying) the target thread. Reviewed by: markj Sponsored by: The FreeBSD Foundation (kib) MFC after: 2 weeks Differential revision: https://reviews.freebsd.org/D23676

Return success, instead of ESRCH, from pthread_cancel(3) applied to the

2020-02-13T23:22:12Z

exited but not yet joined thread. Before, if the thread exited but was not yet joined, we returned ESRCH. According to IEEE Std 1003.1™-2017 recommendation in the description of pthread_cancel(3): If an implementation detects use of a thread ID after the end of its lifetime, it is recommended that the function should fail and report an [ESRCH] error. So it seems desirable to not return ESRCH until the lifetime of the thread ID ends. According to the section 2.9.2 Thread IDs, The lifetime of a thread ID ends after the thread terminates if it was created with the detachstate attribute set to PTHREAD_CREATE_DETACHED or if pthread_detach() or pthread_join() has been called for that thread. In other words, lifetime for thread ID of exited but not yet joined thread did not ended yet. Prompted by: cperciva Sponsored by: The FreeBSD Foundation MFC after: 1 week

Use sigfastblock(2) for masking signals in libthr.

2020-02-09T12:27:22Z

Ensure proper handshake to transfer sigfastblock(2) blocking word ownership from rtld to libthr. Unfortunately sigfastblock(2) is not enough to stop intercepting signals in libthr, because critical sections must ensure more than just signal blocking. Tested by: pho Disscussed with: cem, emaste, jilles Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D12773

Fix destruction of the robust mutexes.

2019-09-23T13:24:31Z

If robust mutex' owner terminated, causing kernel-assisted state recovery, and then pthread_mutex_destroy() is executed as the next action, assert is triggered about mutex still being on the list. Ignore the mutex linkage in pthread_mutex_destroy() for shared robust mutexes with dead owner, same as for enqueue_mutex(). Reported by: avg Sponsored by: The FreeBSD Foundation MFC after: 1 week