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* linux: Require /dev/shm as the shared memory file systemFlorian Weimer2021-02-081-1/+0
| | | | | | | | | | | | | | | | | | | | | Previously, glibc would pick an arbitrary tmpfs file system from /proc/mounts if /dev/shm was not available. This could lead to an unsuitable file system being picked for the backing storage for shm_open, sem_open, and related functions. This patch introduces a new function, __shm_get_name, which builds the file name under the appropriate (now hard-coded) directory. It is called from the various shm_* and sem_* function. Unlike the SHM_GET_NAME macro it replaces, the callers handle the return values and errno updates. shm-directory.c is moved directly into the posix subdirectory because it can be implemented directly using POSIX functionality. It resides in libc because it is needed by both librt and nptl/htl. In the sem_open implementation, tmpfname is initialized directly from a string constant. This happens to remove one alloca call. Checked on x86_64-linux-gnu.
* htl: Add missing symbolsSamuel Thibault2020-12-031-0/+2
| | | | | hurd/hurdsig.c needs to detect whether __pthread_detach and __pthread_create are available, so they need to be exposed.
* htl: Initialize laterSamuel Thibault2020-11-111-2/+2
| | | | | | | | Since htl does not actually need a stack switch, we can initialize it like nptl is, avoiding all sorts of startup issues with ifunc. More precisely, htl defines __pthread_initialize_minimal instead of the elder _cthread_init_routine. We can then drop the stack switching dances.
* htl: Move cleanup stack to variable shared between libc and pthreadSamuel Thibault2020-06-141-0/+1
| | | | | | | | | | | | | | | | | | | | If libpthread gets loaded dynamically, the stack needs to already contain the cleanup handlers of the main thread. * htl/libc_pthread_init.c (__pthread_cleanup_stack): New per-thread variable. * htl/Versions (libc): Add __pthread_cleanup_stack as private symbol. * htl/pt-internal.h (struct __pthread): Remove cancelation_handlers field. (__pthread_cleanup_stack): Add variable declaration. * htl/pt-alloc.c (initialize_pthread): Remove initialization of cancelation_handlers field. * htl/pt-cleanup.c (__pthread_get_cleanup_stack): Return the address of __pthread_cleanup_stack instead of that of the cancelation_handlers field. * htl/forward.c: Include <pt-internal.h>. (dummy_list): Remove variable. (__pthread_get_cleanup_stack): Return the address of __pthread_cleanup_stack instead of that of dummy_list.
* htl: Add sem_clockwait supportSamuel Thibault2020-06-071-1/+3
| | | | | | | | | | | | | * sysdeps/htl/sem-timedwait.c (__sem_timedwait_internal): Add clock_id parameter instead of hardcoding CLOCK_REALTIME. (__sem_clockwait): New function. (sem_clockwait): New weak alias. * sysdeps/htl/sem-wait.c (__sem_timedwait_internal): Update declaration. (__sem_wait): Update call to __sem_timedwait_internal. * htl/Versions (GLIBC_2.32): Add sem_clockwait. * sysdeps/mach/hurd/i386/libpthread.abilist (sem_clockwait): Add symbol. * nptl/Makefile (tests): Move tst-sem5 to... * sysdeps/pthread/Makefile (tests): ... here.
* htl: Add clock variantsSamuel Thibault2020-05-261-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * htl/pt-join.c (__pthread_join): Move implementation to... (__pthread_join_common): ... new function. Add try, timed and clock support. (__pthread_join): Reimplement on top of __pthread_join_common. (__pthread_tryjoin_np, __pthread_timedjoin_np, __pthread_clockjoin_np): Implement on top of __pthread_join_common. (pthread_tryjoin_np, pthread_timedjoin_np, pthread_clockjoin_np): New aliases. * hurd/hurdlock.c (__lll_abstimed_wait, __lll_abstimed_xwait, __lll_abstimed_lock): Check for supported clock. * sysdeps/htl/pt-cond-timedwait.c (__pthread_cond_timedwait_internal): Add clockid parameter and support it. (__pthread_cond_timedwait): Pass -1 as clockid. (__pthread_cond_clockwait): New function. (pthread_cond_clockwait): New alias. * sysdeps/htl/pt-cond-wait.c (__pthread_cond_timedwait_internal): Update prototype. (__pthread_cond_wait): Pass -1 as clockid. * sysdeps/htl/pt-rwlock-timedrdlock.c (__pthread_rwlock_timedrdlock_internal): Add clockid parameter, and support id. (__pthread_rwlock_clockrdlock): New function. (pthread_rwlock_clockrdlock): New alias. * sysdeps/htl/pt-rwlock-rdlock.c (__pthread_rwlock_timedrdlock_internal): Update prototype. (__pthread_rwlock_rdlock): Pass -1 as clockid. * sysdeps/htl/pt-rwlock-timedwrlock.c (__pthread_rwlock_timedwrlock_internal): Add clockid parameter, and support id. (__pthread_rwlock_clockwrlock): New function. (pthread_rwlock_clockwrlock): New alias. * sysdeps/htl/pt-rwlock-wrlock.c (__pthread_rwlock_timedwrlock_internal): Update prototype. (__pthread_rwlock_wrlock): Pass -1 as clockid. * sysdeps/mach/hurd/htl/pt-mutex-timedlock.c (__pthread_mutex_timedlock): Move implementation to (__pthread_mutex_clocklock): New function with additional clockid parameter and support it. (pthread_mutex_clocklock): New alias. (__pthread_mutex_timedlock): Reimplement on top of __pthread_mutex_clocklock. * sysdeps/htl/pthread.h (pthread_tryjoin_np, pthread_timedjoin_np, pthread_clockjoin_np, pthread_mutex_clocklock, pthread_cond_clockwait, pthread_rwlock_clockrdlock, pthread_rwlock_clockwrlock): New prototypes. * sysdeps/htl/pthreadP.h (__pthread_cond_clockwait): New prototype. * htl/Versions (GLIBC_2.32): Add pthread_cond_clockwait, pthread_mutex_clocklock, pthread_rwlock_clockrdlock, pthread_rwlock_clockwrlock, pthread_tryjoin_np, pthread_timedjoin_np, pthread_clockjoin_np. * sysdeps/mach/hurd/i386/libpthread.abilist (pthread_clockjoin_np, pthread_cond_clockwait, pthread_mutex_clocklock, pthread_rwlock_clockrdlock, pthread_rwlock_clockwrlock, pthread_timedjoin_np, pthread_tryjoin_np): New functions. * nptl/tst-abstime.c, nptl/tst-join10.c, nptl/tst-join11.c, nptl/tst-join12.c, nptl/tst-join13.c, nptl/tst-join14.c, nptl/tst-join2.c, nptl/tst-join3.c, nptl/tst-join8.c, nptl/tst-join9.c, nptl/tst-mutex-errorcheck.c, nptl/tst-pthread-mutexattr.c, nptl/tst-mutex11.c, nptl/tst-mutex5.c, nptl/tst-mutex7.c, nptl/tst-mutex7robus.c, nptl/tst-mutex9.c, nptl/tst-rwlock12.c, nptl/tst-rwlock14.c: Move to sysdeps/pthread. * sysdeps/pthread/tst-mutex8.c: Move back to nptl. * nptl/Makefile (tests): Move tst-mutex5, tst-mutex7, tst-mutex7robust, tst-mutex9, tst-mutex11, tst-rwlock12, tst-rwlock14, tst-join2, tst-join3, tst-join8, tst-join9 tst-join10, tst-join11, tst-join12, tst-join13, tst-join14, tst-abstime, tst-mutex-errorcheck, tst-pthread-mutexattr to ... * sysdeps/pthread/Makefile (tests): ... here.
* htl: Add missing functions and defines for robust mutexesSamuel Thibault2020-02-161-0/+5
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* htl: Add support for libc cancellation pointsSamuel Thibault2020-02-101-0/+2
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* C11 threads: Move implementation to sysdeps/pthreadSamuel Thibault2020-02-091-0/+16
| | | | | | | so it gets shared by nptl and htl. Also add htl versions of thrd_current and thrd_yield. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* htl: Rename _pthread_mutex_init/destroy to __pthread_mutex_init/destroySamuel Thibault2020-02-091-1/+2
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* htl: Move internal mutex/rwlock symbols to GLIBC_PRIVATESamuel Thibault2020-02-091-4/+4
| | | | | Their prototypes have never been made public, and they are not used outside libc (checked on the whole Debian archive)
* htl: Remove unused filesSamuel Thibault2020-02-091-2/+0
| | | | These have never been used.
* htl: Add internal version of __pthread_mutex_timedlockSamuel Thibault2020-01-131-0/+1
| | | | The C11 threads implementation will need it.
* htl: Add __errno_location and __h_errno_locationSamuel Thibault2020-01-041-0/+1
| | | | | | | | As explained on https://sourceware.org/ml/libc-alpha/2020-01/msg00049.html the presence of __errno_location in libpthread.so on GNU/Linux makes libpthread getting linked in for libstdc++. This aligns on that behavior, to avoid issues that only GNU/Hurd would get.
* hurd: Add missing symbols for proper libc_get/setspecificSamuel Thibault2018-08-081-0/+2
| | | | | * htl/Versions (__pthread_getspecific, __pthread_setspecific): Add symbols.
* hurd: Add hurd thread librarySamuel Thibault2018-04-021-0/+156
Contributed by Agustina Arzille <avarzille@riseup.net> Amos Jeffries <squid3@treenet.co.nz> David Michael <fedora.dm0@gmail.com> Marco Gerards <marco@gnu.org> Marcus Brinkmann <marcus@gnu.org> Neal H. Walfield <neal@gnu.org> Pino Toscano <toscano.pino@tiscali.it> Richard Braun <rbraun@sceen.net> Roland McGrath <roland@gnu.org> Samuel Thibault <samuel.thibault@ens-lyon.org> Thomas DiModica <ricinwich@yahoo.com> Thomas Schwinge <tschwinge@gnu.org> * htl: New directory. * sysdeps/htl: New directory. * sysdeps/hurd/htl: New directory. * sysdeps/i386/htl: New directory. * sysdeps/mach/htl: New directory. * sysdeps/mach/hurd/htl: New directory. * sysdeps/mach/hurd/i386/htl: New directory. * nscd/Depend, resolv/Depend, rt/Depend: Add htl dependency. * sysdeps/mach/hurd/i386/Implies: Add mach/hurd/i386/htl imply. * sysdeps/mach/hurd/i386/libpthread.abilist: New file.