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2015-03-22Avoid exposing internals of structuresSamuel Thibault
* sysdeps/generic/bits/barrier-attr.h (__pthread_barrierattr): Rename `pshared' field to `__pshared'. * sysdeps/generic/bits/barrier.h (__pthread_barrier): Rename `lock', `'queue', `pending', `count', `attr', and `data' fields to `__lock', `__queue', `__pending', `__count', `__attr', and `__data'. * sysdeps/generic/bits/cancelation.h (__pthread_cancelation_handler): Rename `handler', `arg', and `next' fields to `__handler', `__arg', and `__next'. * sysdeps/generic/bits/condition-attr.h (__pthread_condattr): Rename `pshared' and `clock' fields to `__pshared', and `__clock'. * sysdeps/generic/bits/mutex-attr.h (__pthread_mutexattr): Rename `prioceiling', `protocol', `pshared', and `mutex_type' fields to `__prioceiling', `__protocol', `__pshared', and `__mutex_type'. * sysdeps/generic/bits/mutex.h (__pthread_mutex): Rename `cthreadscompat1', `attr', `data', `owner', and `locks' fields to `__cthreadscompat1', `__attr', `__data', `__owner', and `__locks'. * sysdeps/generic/bits/once.h (__pthread_once): Rename `run' and `lock' fields to `__run' and `__lock'. * sysdeps/generic/bits/rwlock-attr.h (__pthread_rwlockattr): Rename `psharead' field to `__pshared'. * sysdeps/generic/bits/rwlock.h (__pthread_rwlock): Rename `readers', `readerqueue', and `writerqueue' fields to `__readers', `__readerqueue', and `__writerqueue'. * sysdeps/generic/bits/thread-attr.h (__pthread_contentionscope): Rename `schedparam', `stackaddr', `stacksize', `guardsize', `detachstate', `inheritsched', `contentionscope', and `schedpolicy' fields to `__schedparam', `__stackaddr', `__stacksize', `__guardsize', `__detachstate', `__inheritsched', `__contentionscope', and `__schedpolicy''. * sysdeps/generic/bits/cancelation.h: Update code accordingly. * pthread/pt-create.c: Likewise. * pthread/pt-exit.c: Likewise. * pthread/pt-getattr.c: Likewise. * sysdeps/generic/pt-attr-getdetachstate.c: Likewise. * sysdeps/generic/pt-attr-getguardsize.c: Likewise. * sysdeps/generic/pt-attr-getinheritsched.c: Likewise. * sysdeps/generic/pt-attr-getschedparam.c: Likewise. * sysdeps/generic/pt-attr-getschedpolicy.c: Likewise. * sysdeps/generic/pt-attr-getscope.c: Likewise. * sysdeps/generic/pt-attr-getstackaddr.c: Likewise. * sysdeps/generic/pt-attr-getstacksize.c: Likewise. * sysdeps/generic/pt-attr-setdetachstate.c: Likewise. * sysdeps/generic/pt-attr-setguardsize.c: Likewise. * sysdeps/generic/pt-attr-setinheritsched.c: Likewise. * sysdeps/generic/pt-attr-setschedparam.c: Likewise. * sysdeps/generic/pt-attr-setschedpolicy.c: Likewise. * sysdeps/generic/pt-attr-setscope.c: Likewise. * sysdeps/generic/pt-attr-setstackaddr.c: Likewise. * sysdeps/generic/pt-attr-setstacksize.c: Likewise. * sysdeps/generic/pt-attr.c: Likewise. * sysdeps/generic/pt-barrier-init.c: Likewise. * sysdeps/generic/pt-barrier-wait.c: Likewise. * sysdeps/generic/pt-barrier.c: Likewise. * sysdeps/generic/pt-barrierattr-getpshared.c: Likewise. * sysdeps/generic/pt-barrierattr-setpshared.c: Likewise. * sysdeps/generic/pt-cond-timedwait.c: Likewise. * sysdeps/generic/pt-cond.c: Likewise. * sysdeps/generic/pt-condattr-getclock.c: Likewise. * sysdeps/generic/pt-condattr-getpshared.c: Likewise. * sysdeps/generic/pt-condattr-setclock.c: Likewise. * sysdeps/generic/pt-condattr-setpshared.c: Likewise. * sysdeps/generic/pt-mutex-destroy.c: Likewise. * sysdeps/generic/pt-mutex-init.c: Likewise. * sysdeps/generic/pt-mutex-timedlock.c: Likewise. * sysdeps/generic/pt-mutex-transfer-np.c: Likewise. * sysdeps/generic/pt-mutex-trylock.c: Likewise. * sysdeps/generic/pt-mutex-unlock.c: Likewise. * sysdeps/generic/pt-mutexattr-getprotocol.c: Likewise. * sysdeps/generic/pt-mutexattr-getpshared.c: Likewise. * sysdeps/generic/pt-mutexattr-gettype.c: Likewise. * sysdeps/generic/pt-mutexattr-setprotocol.c: Likewise. * sysdeps/generic/pt-mutexattr-setpshared.c: Likewise. * sysdeps/generic/pt-mutexattr-settype.c: Likewise. * sysdeps/generic/pt-mutexattr.c: Likewise. * sysdeps/generic/pt-once.c: Likewise. * sysdeps/generic/pt-rwlock-attr.c: Likewise. * sysdeps/generic/pt-rwlock-timedrdlock.c: Likewise. * sysdeps/generic/pt-rwlock-timedwrlock.c: Likewise. * sysdeps/generic/pt-rwlock-tryrdlock.c: Likewise. * sysdeps/generic/pt-rwlock-trywrlock.c: Likewise. * sysdeps/generic/pt-rwlock-unlock.c: Likewise. * sysdeps/generic/pt-rwlockattr-getpshared.c: Likewise. * sysdeps/generic/pt-rwlockattr-setpshared.c: Likewise. * sysdeps/mach/hurd/pt-attr-setstackaddr.c: Likewise. * sysdeps/mach/hurd/pt-attr-setstacksize.c: Likewise. * sysdeps/mach/hurd/pt-hurd-cond-timedwait.c: Likewise.
2015-03-22Fix build after 32b1b38Samuel Thibault
* sysdeps/pthread/pthread-functions.h (pthread_functions): Rename ptr_pthread_exit field to ptr___pthread_exit. * pthread/pt-initialize.c (pthread_functions): Likewise.
2015-03-08Move pthread-specific lock definitions and declarations to libpthreadSamuel Thibault
* sysdeps/pthread/bits/libc-lockP.h: New file * pthread/pthread-functions.h: Move to... * sysdeps/pthread/pthread-functions.h: ... here.
2015-03-01Forward lockfile calls from libc to dynamically loaded libpthreadSamuel Thibault
* forward.c: (__libc_pthread_functions_init): Add variable (FORWARD2): Use __libc_pthread_functions_init instead of testing __libc_pthread_functions.ptr_##name value. (FORWARD_NORETURN): Add macro. (pthread_exit): Use FORWARD_NORETURN instead of FORWARD2. * libc_pthread_init.c (__libc_pthread_init): Set __libc_pthread_functions_init to 1. * pthread/pthread-functions.h (__pthread_once, __pthread_rwlock_rdlock, __pthread_rwlock_wrlock, __pthread_rwlock_unlock, __pthread_key_create, __pthread_getspecific, __pthread_setspecific, _cthreads_flockfile, _cthreads_funlockfile, _cthreads_ftrylockfile): Add prototypes. (pthread_functions): Add ptr_pthread_once, ptr_pthread_rwlock_rdlock, ptr_pthread_rwlock_wrlock, ptr_pthread_rwlock_unlock, ptr_pthread_key_create, ptr_pthread_getspecific, ptr_pthread_setspecific, ptr__IO_flockfile, ptr__IO_funlockfile, ptr__IO_ftrylockfile. (__libc_pthread_functions_init): Add variable declaration. (PTHFCT_CALL): Add macro. * pthread/pt-initialize.c (pthread_functions): Initialize ptr_pthread_once, ptr_pthread_rwlock_rdlock, ptr_pthread_rwlock_wrlock, pthread_rwlock_unlock, ptr_ptr_pthread_key_create, pthread_getspecific, ptr_pthread_setspecific, ptr_ptr__IO_flockfile, _IO_funlockfile, ptr__IO_ftrylockfile. * sysdeps/generic/pt-once.c (pthread_once): Rename to __pthread_once (pthread_once): Add strong alias. * sysdeps/generic/pt-rwlock-rdlock.c (pthread_rwlock_rdlock): Rename to __pthread_rwlock_rdlock (pthread_rwlock_rdlock): Add strong alias. * sysdeps/generic/pt-rwlock-wrlock.c (pthread_rwlock_wrlock): Rename to __pthread_rwlock_wrlock (pthread_rwlock_wrlock): Add strong alias. * sysdeps/generic/pt-rwlock-unlock.c (pthread_rwlock_unlock): Rename to __pthread_rwlock_unlock (pthread_rwlock_unlock): Add strong alias. * sysdeps/generic/pt-getspecific.c (pthread_getspecific): Rename to __pthread_getspecific (pthread_getspecific): Add strong alias. * sysdeps/generic/pt-setspecific.c (pthread_setspecific): Rename to __pthread_setspecific (pthread_setspecific): Add strong alias. * sysdeps/pthread/flockfile.c: Add file. * sysdeps/pthread/ftrylockfile.c: Add file. * sysdeps/pthread/funlockfile.c: Add file.
2015-02-28Allow libpthread.so to dynamically loaded from a dlopened librarySamuel Thibault
* pthread/pt-internal.h: Include <ldsodefs.h> (_dl_allocate_tls, _dl_deallocate_tls): Remove declarations. * sysdeps/mach/hurd/pt-sysdep.c (init_routine): Rename into _init_routine, add `stack' parameter, return if __pthread_threads is already initialized, pass stack address to __pthread_create_internal if any. (init_routine): New function, calls init_routine with 0 (dynamic_init_routine): New constructor function, calls init_routine with __libc_stack_end.
2015-02-12Rename __pthread_init into ___pthread_initSamuel Thibault
To avoid clashing with the __pthread_init hook. * pthread/pt-initialize.c (__pthread_init): Rename into ___pthread_init. * pthread/pt-internal.h: Likewise. * sysdeps/mach/hurd/pt-sysdep.c: Likewise.
2015-02-12Stop using IS_INSamuel Thibault
* pthread/pt-create.c: Use IS_IN (libpthread) instead of IS_IN_libpthread * pthread/pt-initialize.c: Likewise. * pthread/pt-internal.h: Likewise.
2014-12-04Fix pthread_create return value on TLS allocation failureSamuel Thibault
* pthread/pt-create.c (__pthread_create_internal): When _dl_allocate_tls returns NULL, set `err' to ENOMEM.
2014-09-28Fetch stack size from rlimitSamuel Thibault
* pthread/pt-create.c: Include <hurd/resource.h> (__pthread_create_internal): When `attr''s stacksize is 0, try to get the desired size from the RLIMIT_STACK rlimit before defaulting to PTHREAD_STACK_DEFAULT. * sysdeps/generic/pt-attr.c (__pthread_default_attr): Set stacksize to 0 instead of PTHREAD_STACK_DEFAULT.
2014-08-31Fix stack address computationSamuel Thibault
stackaddr is supposed to be an adressable byte, i.e. not inside the guard size. * pthread/pt-getattr.c (pthread_getattr_np): Take guard size into account when returning the stack bottom address.
2014-08-20Fix guard size computationSamuel Thibault
* pthread/pt-create.c (__pthread_create_internal): On thread creation failure, take guard size into account when deallocating the stack. * sysdeps/mach/pt-thread-terminate.c (__pthread_thread_terminate): Take guard size into account when deallocating the stack.
2014-05-23Fix guardsize computationSamuel Thibault
* pthread/pt-create.c (__pthread_create_internal): Round guardsize up to page size. Fill `guardsize' field of thread structure. * sysdeps/mach/hurd/i386/pt-setup.c (stack_setup): Add guardsize to computation of the top of the stack.
2014-05-02Fix guardsize semanticSamuel Thibault
POSIX says guardsize is in addition to stacksize, not included. * pthread/pt-create.c (__pthread_create_internal): Use setup->guardsize + setup->stacksize as stack allocation size. Do not truncate guardsize to stacksize. * pthread/pt-internal.h (guardsize): Remove comment. * sysdeps/generic/pt-attr-setstacksize.c (pthread_attr_setstacksize): Do not truncate guardsize to stacksize.
2014-02-19Make name resolution thread-safeRichard Braun
* pthread/pt-alloc.c (initialize_pthread): Reset resolver state. * pthread/pt-create.c: Include <resolv.h>. (entry_point): Update the __resp TLS variable to point to the resolver state of the current thread. * pthread/pt-internal.h: Define __need_res_state and include <resolv.h>. (struct __pthread): New `res_state' member.
2014-01-22Fix thread destructionRichard Braun
Releasing a thread reference uses a mutex, which means the kernel resources used for synchronization must be available until late during the destruction process. For simplicity, merge __pthread_thread_dealloc into __pthread_thread_terminate. * Makefile (libpthread-routines): Remove pt-thread-dealloc. * pthread/pt-create.c (__pthread_create_internal): Remove call to __pthread_thread_dealloc. * pthread/pt-exit.c (__pthread_exit): Likewise. * pthread/pt-internal.h (__pthread_thread_dealloc): Remove declaration. (__pthread_thread_terminate): Update description. * sysdeps/mach/pt-thread-dealloc.c: Remove file. * sysdeps/mach/pt-thread-terminate.c (__pthread_thread_terminate): Destroy the wake up port.
2013-12-29Revert "Allow applications to set the default stack size"Richard Braun
This reverts commit 536420a581f9f822cdef0fc460b5176a840f49e5. Now that threadvars have been replaced with TLS, this hack is no longer needed.
2013-12-26Implement thread destructionRichard Braun
This change makes libpthread release almost every resource allocated for a thread, including the kernel thread, its send right, its reply port and its stack. This improves resource usage after peaks of activity during which servers can create hundreds or even thousands of threads. To achieve this, the library relies on the recently added thread_terminate_release one-way GNU Mach RPC, which allows threads to release their last resources along with terminating in a single operation. The pthread_exit function unconditionally releases all the resources it can, including other kernel objects (namely the port used for blocking and waking up) and signal states. When releasing the pthread structure, a reference counter is used so that joinable threads remain available. Once the reference counter drops to 0, the pthread structure can be recycled. Thread local storage (TLS) is also recycled since it needs to remain allocated while terminating the thread, as it is there that the reply port is stored. TLS could be released too, after grabbing the reply port name, but it is difficult to make sure no RPC involving a reply port is used afterwards, so the simpler solution of recycling TLS was chosen. * Makefile (libpthread-routines): Replace pt-thread-halt with pt-thread-terminate. * pthread/pt-alloc.c (initialize_pthread): Set reference counter and unconditionally initialize new threads completely. (__pthread_alloc): Remove call to __pthread_thread_halt, update calls to initialize_pthread. * pthread/pt-create.c (__pthread_create_internal): Don't attempt to reuse stacks, handle reference counter, update failure handling. * pthread/pt-dealloc.c: Include bits/pt-atomic.h. (__pthread_dealloc): Make pthread structure available for reuse when reference counter reaches 0. * pthread/pt-detach.c (pthread_detach): Assume the target thread takes care of its own resources and, as a result, simply unreference its pthread struct. * pthread/pt-exit.c (__pthread_exit): Release resources and terminate. * pthread/pt-internal.h (struct __pthread): New `nr_refs' member. (__pthread_alloc): Update description. (__pthread_dealloc): Likewise. (__pthread_thread_dealloc): Likewise. (__pthread_thread_terminate): New declaration. * pthread/pt-join.c (pthread_join): Assume the target thread takes care of its own resources and, as a result, simply unreference its pthread struct. * sysdeps/mach/hurd/pt-sigstate-destroy.c (__pthread_sigstate_destroy): Call _hurd_sigstate_delete. * sysdeps/mach/hurd/pt-sigstate-init.c (__pthread_sigstate_init): Call _hurd_thread_sigstate and _hurd_sigstate_set_global_rcv when appropriate. * sysdeps/mach/hurd/pt-sysdep.c (__pthread_create_internal): Prevent the library from releasing the stack of the main thread. * sysdeps/mach/hurd/pt-sysdep.h (PTHREAD_SYSDEP_MEMBERS): Remove `have_kernel_resources' from the list of sysdep members. * sysdeps/mach/pt-thread-alloc.c (__pthread_thread_alloc): Update thread allocation. * sysdeps/mach/pt-thread-dealloc.c (__pthread_thread_dealloc): Update description. * sysdeps/mach/pt-thread-halt.c: Remove file. * sysdeps/mach/pt-thread-start.c (__pthread_thread_start): Fix the conditions under which a thread should actually be started. * sysdeps/mach/pt-thread-terminate.c: New file.
2013-10-24Really use user-provided stackSamuel Thibault
* pthread/pt-create.c (__pthread_create_internal): When the user provides a `stackaddr`, use it instead of allocating a stack. * pthread/pt-detach.c (pthread_detach): Only deallocate the stack when it was allocated by libpthread. * pthread/pt-join.c (pthread_join): Likewise.
2013-10-20Drop threadvars entirelySamuel Thibault
2013-10-16Delay TLS deallocation outside thread terminationSamuel Thibault
Since libc functions used up to actual thread termination (including the termination RPC itself) are to use TLS. * pthread/pt-alloc.c (initialize_pthread): Set `tcb` field of `new` to NULL. (__pthread_alloc): Deallocate TLS of to-be-reused `new` thread. * pthread/pt-create.c (__pthread_create_internal): Reset `tcb` field to NULL after deallocation. * pthread/pt-exit.c (__pthread_exit): Do not deallocate TLS.
2013-06-29Fix a subtle thread creation bugRichard Braun
* pthread/pt-create.c (__pthread_create_internal): Store pthread ID in caller-provided memory before starting the new thread.
2013-06-11Initialize ctypeSamuel Thibault
* pthread/pt-create.c (entry_point) [IS_IN_libpthread]: Call __ctype_init.
2013-02-04Fix pthread timeout handling and cancellation issuesRichard Braun
This patch solves two issues. The first one is cancellation handling when a cancellation request is sent before reaching a cancellation point (namely, pthread_cond_{timed,}wait). Cancellation is implemented by pushing an appropriate cleanup handler and switching to PTHREAD_CANCEL_ASYNCHRONOUS type. The main problem is that it doesn't handle pending requests, only a cancellation that occurs while blocking. Other problems occur when trying to correctly handle a timeout and a cancellation request through the cleanup routine. The other issue is correctly handling timeouts. This problem was already well known, as explained by the following comment : "FIXME: What do we do if we get a wakeup message before we disconnect ourself? It may remain until the next time we block." In addition, the prevp thread member is inconsistently used. It is sometimes accessed while protected by the appropriate queue lock to determine whether a thread is still queued, while at times, threads are unqueued without holding a lock, as in pthread_cond_broadcast : /* We can safely walk the list of waiting threads without holding the lock since it is now decoupled from the condition. */ __pthread_dequeuing_iterate (wakeup, wakeup) __pthread_wakeup (wakeup); This is the root cause that triggers some assertion failures. The solution brought by this patch is to consistently use the prevp link to determine if both a thread has been unqueued and if a wakeup message has been sent (both are needed to wake up a thread). A thread unblocked because of a timeout can now accurately determine if it needs to drain its message queue. A direct improvement is that the message queue size can be limited to one message, and wakeups are guaranteed to be non-blocking, which allows safely calling __pthread_wakeup from critical sections. As it now affects the cleanup cancellation routine of __pthread_cond_timedwait_internal, cancellation is reworked as well. Cancellation type is forced to PTHREAD_CANCEL_DEFERRED during the call, and actually checked on both entry and return. A hook is set by the blocking thread so that the waker doesn't need to know about the call implementation. Cancellation members are now protected with a mutex for truely safe access. * pthread/pt-alloc.c (initialize_pthread): Initialize the new `cancel_lock', `cancel_hook' and `cancel_hook_args' fields. * pthread/pt-cancel.c (pthread_cancel): Rework cancellation handling. * pthread/pt-internal.h (struct __pthread): Add `cancel_lock', `cancel_hook' and `cancel_hook_args' fields. (__pthread_dequeue): Assert thread->prevp isn't NULL. * pthread/pt-join.c (pthread_join): Describe how the cancellation point is implemented. * pthread/pt-setcancelstate.c (__pthread_setcancelstate): Lock the given thread cancellation lock when switching state. * pthread/pt-setcanceltype.c (__pthread_setcanceltype): Likewise for cancellation type. * pthread/pt-testcancel.c (pthread_testcancel): Likewise for pending cancellations. * sysdeps/generic/pt-cond-brdcast.c (__pthread_cond_broadcast): Dequeue and wake up threads with condition locked. * sysdeps/generic/pt-cond-signal.c (cond_signal): Remove function, move implementation to ... (__pthread_cond_signal): ... this function. Remove unused `unblocked' variable. * sysdeps/generic/pt-cond-timedwait.c (struct cancel_ctx): New structure. (cancel_hook): New static function. (__pthread_cond_timedwait_internal): Fix cancellation and timeout handling. * sysdeps/generic/pt-mutex-timedlock.c (__pthread_mutex_timedlock_internal): Fix timeout handling. * sysdeps/generic/pt-rwlock-timedrdlock.c (__pthread_rwlock_timedrdlock_internal): Likewise. * sysdeps/generic/pt-rwlock-timedwrlock.c (__pthread_rwlock_timedwrlock_internal): Likewise. * sysdeps/generic/pt-rwlock-unlock.c (pthread_rwlock_unlock): Dequeue and wake up threads with rwlock internal lock held. * sysdeps/generic/sem-timedwait.c (__sem_timedwait_internal): Fix timeout handling. * sysdeps/mach/hurd/pt-docancel.c (__pthread_do_cancel): Unlock the given thread cancellation lock. * sysdeps/mach/pt-thread-alloc.c (create_wakeupmsg): Limit the message queue size of the wakeup port to 1. * sysdeps/mach/pt-wakeup.c (__pthread_wakeup): Call __mach_msg in a non-blocking way.
2012-11-25Allow applications to set the default stack sizeRichard Braun
This change is a temporary hack intended for the Hurd servers. Once Hurd threadvars are replaced with TLS, this commit should be reverted. * pthread/pt-internal.h (__pthread_default_attr): Remove const qualifier. * sysdeps/generic/pt-attr.c (__pthread_default_attr): Likewise. * sysdeps/mach/hurd/pt-sysdep.c (__pthread_stack_default_size): New variable. (init_routine): Set __pthread_default_attr.stacksize if __pthread_stack_default_size exists.
2012-09-15pthread_create: turn ENOMEM to EAGAINPino Toscano
ENOMEM can be returned if some malloc fail, but it is not a valid POSIX error number for pthread_create; thus turn it to EAGAIN. * pthread/pt-create.c (pthread_create): Turn ENOMEM to EAGAIN.
2012-07-08Comment on deviation from standardSamuel Thibault
* pthread/pt-internal.h (guardsize): Mention that we depart from the standard which says guardsize is in addition to stacksize.
2012-04-27Store self in __thread variable instead of threadvarSamuel Thibault
* sysdeps/mach/hurd/pt-sysdep.h (_HURD_THREADVAR_THREAD): Remove macro. (___pthread_self): Declare new __thread variable. (_pthread_self): Take self pointer from ___pthread_self instead of threadvar. * sysdeps/mach/hurd/pt-sysdep.c (___pthread_self): Define new __thread variable. (init_routine): Set ___pthread_self to initial thread structure. * pthread/pt-internal.h (__pthread_setup): Add `self' parameter to `entry_point' parameter. * pthread/pt-create.c (entry_point): Add `self' parameter. Store it in ___pthread_self. * sysdeps/l4/hurd/ia32/pt-setup.c (stack_setup): Add `self parameter to `entry_point' parameter. Pass it the `thread' parameter. (__pthread_setup): Likewise. * sysdeps/l4/hurd/powerpc/pt-setup.c (struct start_info): Add `self' field. (first_entry_1): Pass `self' parameter. (stack_setup): Add `self' parameter to `entry_point' parameter, pass it the `thread' parameter. (__pthread_setup): Likewise. * sysdeps/mach/hurd/ia32/pt-setup.c (stack_setup): Pass `thread' parameter to the start routine. (stack_setup): Add `self' parameter to `entry_point' paramter.
2012-04-27Always pass the pthread_functions structureSamuel Thibault
* pthread/pt-initialize.c (pthread_functions): Always define. (__pthread_init): Always pass address of pthread_functions.
2012-04-23Rename __pthread_initialize into __pthread_initSamuel Thibault
The former conflicts with usage in glibc. * pthread/pt-initialize.c (__pthread_initialize): Rename into __pthread_init. * pthread/pt-internal.h (__pthread_initialize): Likewise. * sysdeps/l4/hurd/pt-sysdep.c (init_routine): Likewise. * sysdeps/mach/hurd/pt-sysdep.c (init_routine): Likewise.
2012-04-22__pthread_timedblock: add an argument for the clock idPino Toscano
To make `__pthread_timedblock' properly measure time using the right clock, add a new argument representing the clock to use. * pthread/pt-internal.h (__pthread_timedblock): New argument CLOCK_ID. * sysdeps/l4/pt-timedblock.c (__pthread_timedblock): Likewise. * sysdeps/mach/pt-timedblock.c (__pthread_timedblock): Likewise. * sysdeps/generic/pt-cond-timedwait.c (__pthread_cond_timedwait_internal): Pass the clock of the `pthread_cond' to `__pthread_timedblock'. * sysdeps/generic/pt-mutex-timedlock.c (__pthread_mutex_timedlock_internal): Pass CLOCK_REALTIME to `__pthread_timedblock'. * sysdeps/generic/pt-rwlock-timedrdlock.c (__pthread_rwlock_timedrdlock_internal): Likewise. * sysdeps/generic/pt-rwlock-timedwrlock.c (__pthread_rwlock_timedwrlock_internal): Likewise. * sysdeps/generic/sem-timedwait.c (__sem_timedwait_internal): Likewise.
2012-04-21Add glibc build supportSamuel Thibault
* Makeconfig, Versions, configure.in, forward.c, libc_pthread_init.c, pthread/pthread-functions.h, shlib-versions, sysdeps/i386/Implies, sysdeps/mach/hurd/Implies, sysdeps/mach/hurd/i386/Implies: New files. * Makefile: Add glibc rules, enabled when IN_GLIBC is defined to yes, when $(..) is defined. * pthread/pt-initialize.c [IS_IN_libpthread] (pthread_functions): New variable. [IS_IN_libpthread] (__pthread_initialize): Call __libc_pthread_init.
2012-04-21Do not redefine tcbhead_t in glibcSamuel Thibault
* pthread/pt-internal.h (tcbhead_t): Define struct only if IS_IN_libpthread is not defined.
2012-04-21Rename bits/atomic.h to bits/pt-atomic.hSamuel Thibault
This avoids a conflict with glibc-provided bits/atomic.h * sysdeps/ia32/bits/atomic.h: Rename to... * sysdeps/ia32/bits/pt-atomic.h: ... this. * pthread/pt-create.c: Include <bits/pt-atomic.h> instead of <bits/atomic.h> * pthread/pt-exit.c: Likewise. * pthread/pt-internal.h: Likewise.
2012-04-21Rename pthread functions to be used for forwardingSamuel Thibault
Libc will need to be able to call them, so they need to have a different name. * pthread/pt-exit.c (pthread_exit): Rename with __ prefix and add strong alias. * pthread/pt-self.c (pthread_self): Likewise. * pthread/pt-setcancelstate.c (pthread_setcancelstate): Likewise * pthread/pt-setcanceltype.c (pthread_setcanceltype): Likewise * sysdeps/generic/pt-attr-destroy.c (pthread_attr_destroy): Likewise * sysdeps/generic/pt-attr-getdetachstate.c (pthread_attr_getdetachstate): Likewise * sysdeps/generic/pt-attr-getinheritsched.c (pthread_attr_getinheritsched): Likewise * sysdeps/generic/pt-attr-getschedparam.c (pthread_attr_getschedparam): Likewise * sysdeps/generic/pt-attr-getschedpolicy.c (pthread_attr_getschedpolicy): Likewise * sysdeps/generic/pt-attr-getscope.c (pthread_attr_getscope): Likewise * sysdeps/generic/pt-attr-init.c (pthread_attr_init): Likewise * sysdeps/generic/pt-attr-setdetachstate.c (pthread_attr_setdetachstate): Likewise * sysdeps/generic/pt-attr-setinheritsched.c (pthread_attr_setinheritsched): Likewise * sysdeps/generic/pt-attr-setschedparam.c (pthread_attr_setschedparam): Likewise * sysdeps/generic/pt-attr-setschedpolicy.c (pthread_attr_setschedpolicy): Likewise * sysdeps/generic/pt-attr-setscope.c (pthread_attr_setscope): Likewise * sysdeps/generic/pt-cond-brdcast.c (pthread_cond_broadcast): Likewise * sysdeps/generic/pt-cond-destroy.c (pthread_cond_destroy): Likewise * sysdeps/generic/pt-cond-init.c (pthread_cond_init): Likewise * sysdeps/generic/pt-cond-signal.c (pthread_cond_signal): Likewise * sysdeps/generic/pt-cond-timedwait.c (pthread_cond_timedwait): Likewise * sysdeps/generic/pt-cond-wait.c (pthread_cond_wait): Likewise * sysdeps/generic/pt-condattr-destroy.c (pthread_condattr_destroy): Likewise * sysdeps/generic/pt-condattr-init.c (pthread_condattr_init): Likewise * sysdeps/generic/pt-equal.c (pthread_equal): Likewise * sysdeps/generic/pt-getschedparam.c (pthread_getschedparam): Likewise * sysdeps/generic/pt-setschedparam.c (pthread_setschedparam): Likewise
2011-11-27Fix __mutex_unlock_solid safetySamuel Thibault
libc releases the spinlock before calling __mutex_unlock_solid, so we have to try to reacquire it before possibly giving it to some blocked thread. * pthread/cthreads-compat.c (__mutex_unlock_solid): Call __pthread_spin_trylock before calling __pthread_mutex_unlock.
2011-10-20Merge branch 'tls'Thomas Schwinge
Conflicts: ChangeLog Makefile pthread/pt-exit.c pthread/pt-internal.h sysdeps/mach/hurd/ia32/pt-setup.c sysdeps/mach/hurd/pt-docancel.c sysdeps/mach/hurd/pt-sysdep.h
2011-10-20 TLS support for libpthread, Mach/Hurd (x86).Samuel Thibault
* Makefile (CFLAGS): Define ENABLE_TLS. * pthread/pt-create.c (__pthread_create_internal) [ENABLE_TLS]: Call into glibc to allocate static TLS block. * pthread/pt-exit.c (pthread_exit) [ENABLE_TLS]: Call into glibc to deallocate static TLS block. * pthread/pt-internal.h [ENABLE_TLS] (tcbhead_t): New structure; as in glibc. (__pthread) [ENABLE_TLS]: Add TCB member. [ENABLE_TLS] (_dl_allocate_tls, _dl_deallocate_tls): Declare; from glibc. * sysdeps/mach/hurd/pt-sysdep.h (__thread_set_pcsp): Rename to __thread_set_pcsptp. Add SET_TP and TP parameters. Change all callers. * sysdeps/mach/hurd/i386/pt-machdep.c (__thread_set_pcsptp): Imlement TLS support. * sysdeps/mach/hurd/i386/pt-setup.c (__pthread_setup): Likewise.
2011-09-15<pthread.h> must pull in a NULL definition.Thomas Schwinge
Thus, revert a bit of commit 769e2108a0f5fc49eff9f3addbaf5f0646bcb253. * pthread/cthreads-compat.c: Don't #include <stddef.h>.
2011-09-07Tiny build and GCC warning fixes.Thomas Schwinge
* pthread/cthreads-compat.c: #include <stddef.h> for NULL. * pthread/pt-exit.c (pthread_exit): Remove stray need_dealloc variable. * sysdeps/generic/pt-attr-getschedparam.c: #include <string.h> for memcpy. * sysdeps/mach/hurd/ia32/pt-setup.c (stack_setup): Apply some more typecasting. * tests/test-1.c: #include <assert.h>. * tests/test-6.c: Likewise. * tests/test-7.c: Likewise. * tests/test-16.c (handler): Take parameters for sa_handler, not sa_sigaction.
2010-05-19Add pthread_yield functionSamuel Thibault
* pthread/pt-yield.c: New file. * Makefile (SRCS): Add pt-yield.c * Makefile.am (libpthread_a_SOURCES): Add pt-yield.c
2009-08-23Fix pthread_setcancelstate/type crashSamuel Thibault
* pthread/pt-setcancelstate.c (pthread_setcancelstate): Check whether OLDSTATE is NULL before filling it. * pthread/pt-setcanceltype.c (pthread_setcanceltype): Likewise.
2009-04-082008-08-27 Neal H. Walfield <neal@gnu.org>Neal H. Walfield
* pthread/cthreads-compat.c: Don't include <cthreads.h>. (cthread_t): New type definition. (cthread_fn_t): Likewise. (cthread_key_t): Likewise. (CTHREAD_KEY_INVALID): Define.
2009-04-072008-08-16 Neal H. Walfield <neal@gnu.org>Neal H. Walfield
* pthread/pt-alloc.c: Don't include <bits/atomic.h>. (__pthread_free_threads): Change to a struct __pthread *. (__pthread_free_threads_lock): New variable. (__pthread_alloc): When looking for a TCB to reuse, iterate over __pthread_free_threads taking the first for which the STATE field is PTHREAD_TERMINATED. When reusing a TCB, first call __pthread_thread_halt on it. * pthread/pt-dealloc.c: Don't include <bits/atomic.h>. (__pthread_free_threads): Change to a struct __pthread *. (__pthread_free_threads_lock): New declaration. (__pthread_dealloc): Enqueue PTHREAD on __PTHREAD_FREE_THREADS. Set PTHREAD->STATE to PTHREAD_TERMINATED after everything else. * pthread/pt-join.c (pthread_join): Call __pthread_thread_halt before destroying the thread. When destroying the thread, call __pthread_thread_dealloc on it. * pthread/pt-detach.c (pthread_detach): If destroying the thread, call __pthread_thread_halt before deallocating the stack. In this case, also call __pthread_thread_dealloc on the tcb. * pthread/pt-exit.c (pthread_exit): Call __pthread_dealloc only if the thread is detached and then as the last thing we do before calling __pthread_thread_halt. * pthread/pt-internal.h (__pthread_thread_halt): Remove argument NEED_DEALLOC. Update users. * sysdeps/mach/pt-thread-halt.c (__pthread_thread_halt): Remove argument need_dealloc. * sysdeps/mach/hurd/pt-sysdep.h (PTHREAD_SYSDEP_MEMBERS): Add field have_kernel_resources. * sysdeps/mach/hurd/pt-thread-alloc.c (__pthread_thread_alloc): If THREAD->HAVE_KERNEL_RESOURCES is true, just return. After allocating the resources, set THREAD->HAVE_KERNEL_RESOURCES to true.
2009-04-072008-08-12 Neal H. Walfield <neal@gnu.org>Neal H. Walfield
Merge changes from hurd-l4 fork. * Makefile (SRCS): Add pt-startup.c and pt-mutex-transfer-np.c. (sysdeps_headers): Add pthread-np.h. 2008-08-12 Neal H. Walfield <neal@gnu.org> * sysdeps/generic/bits/pthread-np.h: New file. 2008-08-12 Neal H. Walfield <neal@gnu.org> * sysdeps/generic/pt-startup.c: New file. 2008-08-12 Neal H. Walfield <neal@gnu.org> * sysdeps/generic/bits/mutex.h (__PTHREAD_RECURSIVE_MUTEX_INITIALIZER): Define. (__PTHREAD_MUTEX_RECURSIVE_INITIALIZER): Don't define. * include/pthread/pthread.h (PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) [__USE_GNU]: Define. (PTHREAD_MUTEX_RECURSIVE_INITIALIZER_NP): Don't define. 2008-08-12 Neal H. Walfield <neal@gnu.org> * include/pthread/pthread.h: Include <sys/cdefs.h>. (__extern_inline): If not defined, define appropriately. 2008-06-01 Neal H. Walfield <neal@gnu.org> * include/pthread/pthread.h (PTHREAD_MUTEX_RECURSIVE_INITIALIZER_NP): New definition. * sysdeps/generic/bits/mutex.h (__PTHREAD_MUTEX_RECURSIVE_INITIALIZER): New definition. * sysdeps/generic/bits/mutex-attr.h (__pthread_recursive_mutexattr): New definition. * sysdeps/generic/pt-mutexattr.c (__pthread_recursive_mutexattr): New declaration. * sysdeps/generic/pt-mutex-init.c (_pthread_mutex_init): If ATTR is &__PTHREAD_RECURSIVE_MUTEXATTR, don't allocate a copy, just save in MUTEX->ATTR. * sysdeps/generic/pt-mutex-destroy.c (_pthread_mutex_destroy): If MUTEX->ATTR is &__PTHREAD_RECURSIVE_MUTEXATTR, don't free it. 2008-05-29 Thomas Schwinge <tschwinge@gnu.org> * sysdeps/generic/sem-timedwait.c: Don't include <error.h>. 2008-05-21 Neal H. Walfield <neal@gnu.org> * include/pthread/pthread.h: Include <bits/pthread-np.h>. 2008-03-01 Neal H. Walfield <neal@gnu.org> * sysdeps/generic/pt-mutex-transfer-np.c: New file. * pthread/pt-self.c (pthread_self): Assert that SELF is not NULL. 2007-12-23 Neal H. Walfield <neal@gnu.org> * pthread/pt-join.c (pthread_join): Cast argument to pthread_cleanup_push to avoid warning. 2007-11-23 Neal H. Walfield <neal@gnu.org> * pthread/pt-internal.h (__pthread_startup): Add declaration. * pthread/pt-create.c (entry_point): Call __pthread_startup.
2009-04-072008-08-12 Neal H. Walfield <neal@gnu.org>Neal H. Walfield
Merge in Samuel Thibault's changes from the main line. * Makefile.am (libpthread_a_SOURCES): Add pt-getattr.c. * headers.m4: Link libpthread/include/pthread/pthreadtypes.h to sysroot/include/pthread/pthreadtypes.h and libpthread/sysdeps/${arch}/bits/spin-lock-inline.h. to sysroot/include/bits/spin-lock-inline.h. * include/pthread/pthread.h: Include <sys/cdefs.h>. (__extern_inline): If not defined, define appropriately. 2008-08-04 Samuel Thibault <samuel.thibault@ens-lyon.org> * include/pthread/pthreadtypes.h (__pthread_inheritsched): Remove comma at end of enumeration. 2008-08-03 Samuel Thibault <samuel.thibault@ens-lyon.org> * Makefile (sysdeps_headers): Add spin-lock-inline.h. (SYSDEP_PATH): Move sysdeps/ia32 right after sysdeps/$(MICROKERNEL)/ia32. * include/pthread/pthread.h: Include <bits/spin-lock-inline.h>. * sysdeps/ia32/bits/spin-lock.h: Move inlines to... * sysdeps/ia32/bits/spin-lock-inline.h: ... new file. 2008-08-02 Samuel Thibault <samuel.thibault@ens-lyon.org> * sysdeps/generic/bits/mutex.h: Do not include <errno.h> and <stddef.h> * sysdeps/ia32/bits/memory.h (__memory_barrier): Add memory clobber. * sysdeps/ia32/bits/spin-lock.h (__pthread_spin_trylock, __pthread_spin_unlock): Add memory clobbers. * sysdeps/l4/hurd/ia32/pt-setup.c (stack_setup): Fix reservation of stack room for initial frame. 2008-07-18 Samuel Thibault <samuel.thibault@ens-lyon.org> * Makefile (sysdeps_headers): add pthread/pthreadtypes.h 2008-06-27 Samuel Thibault <samuel.thibault@ens-lyon.org> * include/pthread/pthread.h: Do not define __need_clockid_t, include <time.h>, and define clockid_t if __clockid_defined is not defined. Include <pthread/pthreadtypes.h> (pthread_equal): New extern inline. (pthread_cleanup_push, pthread_cleanup_pop): New macros. (__pthread_process_shared, __pthread_inheritsched, __pthread_contentionscope, __pthread_detachstate, __pthread_mutex_protocol, __pthread_mutex_type, pthread_attr_t, pthread_mutex_attr_t, pthread_mutex_t, pthread_condattr_t, pthread_cond_t, pthread_spinlock_t, pthread_rwlockattr_t, pthread_rwlock_t, pthread_barrierattr_t, pthread_barrier_t, pthread_key_t, pthread_once_t): Move enums and typedefs to... * include/pthread/pthreadtypes.h: ... new file. * sysdeps/generic/bits/cancelation.h (pthread_cleanup_push): Rename macro to __pthread_cleanup_push. (pthread_cleanup_pop): Rename macro to __pthread_cleanup_pop. * sysdeps/generic/bits/barrier-attr.h (__pthread_process_shared): Forward-declare enum. * sysdeps/generic/bits/condition-attr.h (__pthread_process_shared): Likewise. * sysdeps/generic/bits/mutex-attr.h (__pthread_mutex_protocol, __pthread_process_shared, __pthread_mutex_type): Likewise. * sysdeps/generic/bits/rwlock-attr.h (__pthread_process_shared): Likewise. * sysdeps/generic/bits/thread-attr.h (__pthread_detachstate, __pthread_inheritsched, __pthread_contentionscope): Likewise. * sysdeps/generic/bits/pthread.h (pthread_t): Rename type to __pthread_t. (pthread_equal): Rename to __pthread_equal. 2008-06-27 Samuel Thibault <samuel.thibault@ens-lyon.org> * sysdeps/generic/bits/thread-barrier.h: Remove unused file. 2008-05-17 Samuel Thibault <samuel.thibault@ens-lyon.org> * include/pthread/pthread.h (pthread_getattr_np): New declaration. * pthread/pt-getattr.c: New file. * Makefile (SRCS): Add pt-getattr.c. 2008-03-16 Samuel Thibault <samuel.thibault@ens-lyon.org> * include/libc-symbols.h (HAVE_ASM_PREVIOUS_DIRECTIVE): Define. 2008-02-29 Samuel Thibault <samuel.thibault@ens-lyon.org> * sysdeps/l4/hurd/ia32/pt-setup.c (stack_setup): Align stack on 0x10 for MMX operations. 2008-01-01 Samuel Thibault <samuel.thibault@ens-lyon.org> * include/pthread/pthread.h (pthread_spin_destroy, pthread_spin_init, pthread_spin_lock, pthread_spin_trylock, pthread_spin_unlock): Use __extern_inline macro instead of extern __inline. * sysdeps/ia32/bits/spin-lock.h (__PT_SPIN_INLINE, __pthread_spin_lock): Likewise * sysdeps/generic/bits/pthread.h (pthread_equal): Declare ; only provide inline when __USE_EXTERN_INLINES is defined. Use __extern_inline macro instead of extern __inline. * sysdeps/ia32/bits/memory.h (__memory_barrier): Add static to inline.
2009-04-072008-06-07 Neal H. Walfield <neal@gnu.org>Neal H. Walfield
* pthread/pt-internal.h (__pthread_queue_iterate): Use 1, not true. (__pthread_dequeuing_iterate): Likewise.
2009-04-072008-05-27 Neal H. Walfield <neal@gnu.org>Neal H. Walfield
* pthread/pt-internal.h (__pthread_queue_iterate): Before returning the current element, save its next pointer. (__pthread_dequeuing_iterate): Likewise. * sysdeps/l4/hurd/pt-wakeup.c (__pthread_wakeup): Loop until we successfully wake THREAD.
2009-04-072008-03-01 Neal H. Walfield <neal@gnu.org>Neal H. Walfield
Add signal implementation. * Makefile.am (SYSDEP_PATH): Add $(srcdir)/signal. (libpthread_a_SOURCES): Add pt-mutex-transfer-np.c, kill.c, killpg.c, pt-kill-siginfo-np.c, raise.c, sigaction.c, sigaddset.c, sigaltstack.c, sigdelset.c, sigemptyset.c, sigfillset.c, sig-internal.c, sig-internal.h, siginterrupt.c, sigismember.c, signal.c, signal-dispatch.c, signal.h, sigpending.c, sigprocmask.c, sigsuspend.c, sigtimedwait.c, sigwait.c, sigwaiter.c, sigwaitinfo.c, signal-dispatch-lowlevel.c, and sigprocmask.c. * headers.m4: Link libpthread/signal/signal.h into ../include. * sysdeps/generic/pt-mutex-transfer-np.c: New file. * signal/README: New file. * signal/TODO: Likewise. * signal/kill.c: Likewise. * signal/pt-kill-siginfo-np.c: Likewise. * signal/sig-internal.c: Likewise. * signal/sig-internal.h: Likewise. * signal/sigaction.c: Likewise. * signal/sigaltstack.c: Likewise. * signal/signal-dispatch.c: Likewise. * signal/signal.h: Likewise. * signal/sigpending.c: Likewise. * signal/sigsuspend.c: Likewise. * signal/sigtimedwait.c: Likewise. * signal/sigwaiter.c: Likewise. * signal/sigwaitinfo.c: Likewise. * sysdeps/l4/hurd/sig-sysdep.h: Likewise. * sysdeps/l4/hurd/sigprocmask.c: Likewise. * sysdeps/generic/killpg.c: Likewise. * sysdeps/generic/pt-kill.c: Likewise. * sysdeps/generic/raise.c: Likewise. * sysdeps/generic/sigaddset.c: Likewise. * sysdeps/generic/sigdelset.c: Likewise. * sysdeps/generic/sigemptyset.c: Likewise. * sysdeps/generic/sigfillset.c: Likewise. * sysdeps/generic/siginterrupt.c: Likewise. * sysdeps/generic/sigismember.c: Likewise. * sysdeps/generic/signal.c: Likewise. * sysdeps/generic/sigwait.c: Likewise. * sysdeps/l4/hurd/ia32/signal-dispatch-lowlevel.c: Likewise. * sysdeps/l4/hurd/pt-sysdep.c (sigprocmask): Remove function. * sysdeps/l4/hurd/pt-sigstate.c (__pthread_sigstate): Implement it. * sysdeps/l4/hurd/pt-sigstate-init.c: Include <sig-internal.h>. (__pthread_sigstate_init): Initialize THREAD->SS. * sysdeps/l4/hurd/pt-kill.c: Remove file. * pthread/pt-internal.h: Include <sig-internal.h>. (PTHREAD_SIGNAL_MEMBERS) [! PTHREAD_SIGNAL_MEMBERS]: Define. (struct __pthread): Add PTHREAD_SIGNAL_MEMBERS. * pthread/pt-self.c (pthread_self): Assert that SELF is not NULL.
2009-04-072007-12-23 Neal H. Walfield <neal@gnu.org>Neal H. Walfield
* Makefile.am (AM_CPPFLAGS): Add "-std=gnu99 -Wall -g -O3". * sysdeps/l4/pt-block.c (__pthread_block): Remove unused variable err. * pthread/pt-join.c (pthread_join): Cast argument to pthread_cleanup_push to avoid warning.
2009-04-072007-11-23 Neal H. Walfield <neal@gnu.org>Neal H. Walfield
* pthread/pt-internal.h (__pthread_startup): Add declaration. * pthread/pt-create.c (entry_point): Call __pthread_startup. * sysdeps/l4/hurd/pt-sysdep.h: Include <hurd/storage.h> and <sys/mman.h>. (PTHREAD_SYSDEP_MEMBERS): Add fields object, exception_handler_stack and exception_handler_sp. (__attribute__): Call munmap. * sysdeps/l4/hurd/ia32/pt-setup.c (__pthread_setup): Set up thread->exception_handler_sp. Don't set the user define handle here. * sysdeps/l4/hurd/pt-startup.c: New file. Do it here. * sysdeps/l4/hurd/pt-thread-alloc.c: New file. * sysdeps/l4/hurd/pt-thread-halt.c: New file. * sysdeps/l4/hurd/pt-thread-start.c: New file. * Makefile.am (libpthread_a_SOURCES): Add pt-startup.c. * sysdeps/l4/pt-block.c: Include <hurd/stddef.h>. (__pthread_block): Detect IPC failure. Add debugging output. * sysdeps/l4/pt-wakeup.c: Include <hurd/stddef.h>. (__pthread_wakeup): Detect IPC failure. Add debugging output.
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