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* Schedule spinlocked threads by moving them through the work queue, insteadJonathan Mini2002-11-241-2/+15
| | | | | | | | | | of the wait queue. Approved by: re (blanket) Stolen from: davidxu Notes: svn path=/head/; revision=107202
* Get the wall clock time from the KSE mailbox, rather than doing anotherJonathan Mini2002-11-241-2/+2
| | | | | | | syscall. Notes: svn path=/head/; revision=107201
* Fix idle timeout bug, use correct current time of day.David Xu2002-11-201-2/+2
| | | | Notes: svn path=/head/; revision=107102
* Schedule an idle context to block until timeouts expire without blockingJonathan Mini2002-11-123-107/+89
| | | | | | | further upcalls. Notes: svn path=/head/; revision=106786
* Make pthread_sigmask(3) operate on the thread signal mask, not the processJonathan Mini2002-10-301-1/+27
| | | | | | | signal mask. Notes: svn path=/head/; revision=106193
* Use KSE to schedule threads.Jonathan Mini2002-10-307-257/+366
| | | | Notes: svn path=/head/; revision=106191
* Add the 'restrict' type qualifier to the prototypes of `sigaction',Robert Drehmel2002-10-021-1/+1
| | | | | | | | | `sigprocmask', `sigaltstack', and `sigwait' as well as to the prototypes of the apparantly unimplemented functions `sigtimedwait' and `sigwaitinfo'. This complies with IEEE Std 1003.1-2001. Notes: svn path=/head/; revision=104368
* Make libpthread KSE aware.Jonathan Mini2002-09-1626-2395/+135
| | | | | | | | Reviewed by: deischen, julian Approved by: -arch Notes: svn path=/head/; revision=103419
* Make the changes needed for libpthread to compile in its new home.Jonathan Mini2002-09-1693-227/+186
| | | | | | | | | | | The new libpthread will provide POSIX threading support using KSE. These files were previously repo-copied from src/lib/libc_r. Reviewed by: deischen Approved by: -arch Notes: svn path=/head/; revision=103388
* Remove much of the dereferencing of the fd table entries to lookDaniel Eischen2002-08-299-19/+23
| | | | | | | | | | | | | | at file flags and replace it with functions that will avoid null pointer checks. MFC to be done by archie ;-) PR: 42100 Reviewed by: archie, robert MFC after: 3 days Notes: svn path=/head/; revision=102590
* Make the libc_r version of select() set the readable or writableArchie Cobbs2002-08-291-4/+6
| | | | | | | | | | | | | file descriptor bit if poll() returns POLLERR, POLLHUP, or POLLNVAL. Othewise, it's possible for select() to return successfully but with no bits set. Reviewed by: deischen MFC after: 3 days PR: bin/42175 Notes: svn path=/head/; revision=102586
* When poll(2)'ing for readability or writability of a file descriptorArchie Cobbs2002-08-291-2/+6
| | | | | | | | | | | on behalf of a thread, we should check the POLLERR, POLLHUP, and POLLNVAL flags as well to wake up the thread in these cases. Suggested by: deischen MFC after: 3 days Notes: svn path=/head/; revision=102546
* Replace various spelling with FALLTHROUGH which is lint()ablePhilippe Charnier2002-08-251-1/+1
| | | | Notes: svn path=/head/; revision=102411
* Oops, forgot to set the suspended flag for threads that are createdDaniel Eischen2002-07-091-2/+3
| | | | | | | | | | initially suspended. This was preventing such threads from getting resumed. Reported by: Bill Huey <billh@gnuppy.monkey.org> Notes: svn path=/head/; revision=99660
* Make sigpending and sigsuspend account for signals that are pending onDaniel Eischen2002-06-282-5/+27
| | | | | | | | | the process as well as pending on the current thread. Reported by: Andrew MacIntyre <andymac@bullseye.apana.org.au> Notes: svn path=/head/; revision=98976
* Add a wrapper for pselect() in order to make it a cancellation point.Daniel Eischen2002-06-282-0/+55
| | | | | | | Prompted by: wollman Notes: svn path=/head/; revision=98975
* Missed in earlier commit -- I did cvs commit src/lib/libc. Oops.Robert Watson2002-06-142-8/+0
| | | | Notes: svn path=/head/; revision=98205
* Revamp suspend and resume. While I'm here add pthread_suspend_all_np()Daniel Eischen2002-05-2413-307/+231
| | | | | | | | | | | | | | | | and pthread_resume_all_np(). These suspend and resume all threads except the current thread, respectively. The existing functions pthread_single_np() and pthread_multi_np(), which formerly had no effect, now exhibit the same behaviour and pthread_suspend_all_np() and pthread_resume_all_np(). These functions have been added mostly for the native java port. Don't allow the uthread kernel pipe to use the same descriptors as stdio. Mostily submitted by Oswald Buddenhagen <ossi@kde.org>. Correct some minor style nits. Notes: svn path=/head/; revision=97204
* Undo namespace pollution by prefixing the globals pthread_guard_default andAlfred Perlstein2002-05-154-26/+29
| | | | | | | | | | | pthread_page_size. Fix a bunch line wrapping. Pointed out by: deischen Notes: svn path=/head/; revision=96636
* Don't use PAGE_SIZE in userland, instead use getpagesize(), this is toAlfred Perlstein2002-05-134-21/+36
| | | | | | | | | | allow running on other arches when the instructions are supported but the page size granularity is not. Glanced at by: peter Notes: svn path=/head/; revision=96501
* Use GCC's __attribute__ ((constructor)) mechanism to invoke the pthreadAlfred Perlstein2002-05-112-1/+62
| | | | | | | | | | startup code rather than a static C++ object since c++ seems to be broken. This doesn't seem to work for staticically linked program just yet, I'll give that some more work when I get a chance. Notes: svn path=/head/; revision=96401
* Make these functions cancellation points like they should be:Archie Cobbs2002-05-025-5/+66
| | | | | | | | | | | poll(2), readv(2), select(2), wait4(2), writev(2). PR: bin/37658 Reviewed by: deischen MFC after: 1 week Notes: svn path=/head/; revision=95948
* Make sure calls to pthread_cancel() do not take effect if the targetArchie Cobbs2002-05-021-2/+4
| | | | | | | | | | | thread is already exiting. PR: bin/37614 Reviewed by: deischen MFC after: 1 week Notes: svn path=/head/; revision=95947
* The GCC developers have made good on their threats against #pragma for 3.1.David E. O'Brien2002-04-151-1/+2
| | | | | | | | | Use __weak_reference in place of the #pragma. Submitted by: eischen Notes: svn path=/head/; revision=94808
* Return correct number of total bits set in all fd_set's.Jeroen Ruigrok van der Werven2002-04-091-9/+18
| | | | | | | | | | | | | | Change case of POLLNVAL as an error. Remove POLLHUP and POLLERR from one case, their place is most likely amongst read events. PR: 33723 Submitted by: Alexander Litvin <archer@whichever.org> Reviewed by: deischen [Provided a small change to the PR patch as well] MFC after: 4 weeks Notes: svn path=/head/; revision=94265
* Do not use __progname directly (except in [gs]etprogname(3)).Mark Murray2002-03-291-5/+7
| | | | | | | | | Also, make an internal _getprogname() that is used only inside libc. For libc, getprogname(3) is a weak symbol in case a function of the same name is defined in userland. Notes: svn path=/head/; revision=93399
* Add the ability to recognize old references to keys, and return NULLDaniel Eischen2002-03-196-36/+54
| | | | | | | | when old keys are referenced (after pthread_key_delete()) via pthread_getspecific(). Notes: svn path=/head/; revision=92730
* Fix the return code from pthread_rwlock_try[rw|rd]lock() functions;Brian S. Dean2002-03-151-2/+2
| | | | | | | | | these should return EBUSY when the calling thread would block. MFC after: 2 weeks Notes: svn path=/head/; revision=92360
* Properly clear the status of a join operation if the joining thread isDaniel Eischen2002-03-062-1/+4
| | | | | | | canceled or the joinee is detached. Notes: svn path=/head/; revision=91762
* Don't rely on <sys/signal.h> to include <sys/ucontext.h>Daniel Eischen2002-02-171-0/+1
| | | | Notes: svn path=/head/; revision=90774
* Correct a typo pthread_attr_setscope() function fails unconditionallyMaxim Konovalov2002-02-141-1/+1
| | | | | | | | | | | | due to. PR: misc/30699 Reviewed by: jasone, ru Approved by: jasone, ru MFC after: 1 week Notes: svn path=/head/; revision=90656
* This has been sitting in my local tree long enough. Remove the useDaniel Eischen2002-02-095-268/+167
| | | | | | | | | | | | | | | | | of an alternate signal stack for handling signals. Let the kernel send signals on the stack of the current thread and teach the threads signal handler how to deliver signals to the current thread if it needs to. Also, always store a threads context as a jmp_buf. Eventually this will change to be a ucontext_t or mcontext_t. Other small nits. Use struct pthread * instead of pthread_t in internal library routines. The threads code wants struct pthread *, and pthread_t doesn't necessarily have to be the same. Reviewed by: jasone Notes: svn path=/head/; revision=90431
* Use the real function address (instead of function address + 8) for theDaniel Eischen2001-12-221-2/+2
| | | | | | | | | | | | return address when modifying a jmp_buf to create a new thread context. Also set t12 with the return address. This should fix libc_r on alpha. With much detective work by: Bernd Walter <ticso@cicely.de> Notes: svn path=/head/; revision=88401
* Fix the retrieval of USRSTACK via sysctl so that it works for 64-bitDaniel Eischen2001-12-181-2/+2
| | | | | | | | | archs. This should fix libc_r on alpha. Submitted by: Bernd Walter <ticso@cicely9.cicely.de> Notes: svn path=/head/; revision=88092
* When cancelling a thread while in a join operation, do not detachDaniel Eischen2001-12-161-4/+1
| | | | | | | | | | | the target thread of the join operation. This allows the cancelled thread to detach the target thread in its cancellation handler. This bug was found by Butenhof's cancel_subcontract test. Reviewed by: jasone Notes: svn path=/head/; revision=88015
* Pull the target thread of a join operation from the correct placeDaniel Eischen2001-12-151-3/+4
| | | | | | | when cancelling a thread. Notes: svn path=/head/; revision=87988
* Fix pthread_join so that it works if the target thread exits whileDaniel Eischen2001-11-174-10/+32
| | | | | | | | | | the joining thread is in a signal handler. Reported by: Loren James Rittle <rittle@labs.mot.com> MFC after: 1 week Notes: svn path=/head/; revision=86499
* Make libc_r check the kern.usrstack sysctl instead of using internalPeter Wemm2001-10-263-6/+20
| | | | | | | | | | kernel #defines to figure out where the stack is located. This stops libc_r from exploding when the kernel is compiled with a different KVM size. IMHO this is all kinda bogus, it would be better to just check %esp and work from that. Notes: svn path=/head/; revision=85567
* Style: sort __sys_foo() prototypes, tabs -> spaces, etc.Ruslan Ermilov2001-10-261-78/+78
| | | | Notes: svn path=/head/; revision=85559
* Removed:Ruslan Ermilov2001-10-262-16/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | - uthread_signal.c; libc_r does not wrap signal() since 1998/04/29. - uthread_attr_setprio.c; it was never connected to the build, and pthread_attr_setprio() does not exist in POSIX. - uthread_sigblock.c and uthread_sigsetmask.c; these were no-ops bloating libc_r's space. pthread_private.h: - Removed prototypes of non-syscalls: send(). - Removed prototypes of unused syscalls: sigpending(), sigsuspend(), and select(). - Fixed prototype of fork(). - MFS: Fixed prototypes of <sys/socket.h> syscalls. Reviewed by: deischen Approved by: deischen, jasone Notes: svn path=/head/; revision=85557
* Compensate for "Compensate for header dethreading" by backing it out.Bruce Evans2001-10-101-2/+0
| | | | Notes: svn path=/head/; revision=84768
* Limit maximum poll interval to 60 seconds. This prevents an overflowDaniel Eischen2001-10-071-0/+3
| | | | | | | | | | from occurring when converting from a timeval/timespec to a timeout in milliseconds. Submitted by: dwmalone Notes: svn path=/head/; revision=84610
* Fix logic errors in pthread_cond_wait() and pthread_cond_timedwait() thatJason Evans2001-08-191-68/+52
| | | | | | | | | could cause deadlock after interruption due to a signal. Reviewed by: deischen Notes: svn path=/head/; revision=81918
* Fix a bug in canceling joining threads.Jason Evans2001-08-163-2/+18
| | | | | | | | | | Do not detach canceled threads. Reported by: Arno Klaassen <arno@heho.snv.jussieu.fr> Collaboration with: deischen Notes: svn path=/head/; revision=81750
* Make the name parameter const char *.Warner Losh2001-08-111-1/+1
| | | | Notes: svn path=/head/; revision=81524
* Implement pthread_attr_[gs]etguardsize(). Non-default-size stacks used toJason Evans2001-07-209-174/+387
| | | | | | | | | | | be malloc()ed, but they are now allocated using mmap(), just as the default-size stacks are. A separate cache of stacks is kept for non-default-size stacks. Collaboration with: deischen Notes: svn path=/head/; revision=80021
* Clear the in thread scheduler flag after jumping to the start ofDaniel Eischen2001-06-291-0/+6
| | | | | | | | | a signal handler from the scheduler. MFC after: 1 week Notes: svn path=/head/; revision=78979
* Fix a race condition in pthread_join(). All of the following must occurJason Evans2001-06-273-48/+53
| | | | | | | | | | | | | | | atomically: 1) Search _thread_list for the thread to join. 2) Search _dead_list for the thread to join. 3) Set the running thread as the joiner. While we're at it, fix a race in the case where multiple threads try to join on the same thread. POSIX says that the behavior of multiple joiners is undefined, but the fix is cheap as a result of the other fix. Notes: svn path=/head/; revision=78873
* Instead of using a join queue for each thread, use a single pointer toJason Evans2001-05-2011-146/+107
| | | | | | | | | | | | | | keep track of a joiner. POSIX only supports a single joiner, so this simplification is acceptable. At the same time, make sure to mark a joined thread as detached so that its resources can be freed. Reviewed by: deischen PR: 24345 Notes: svn path=/head/; revision=76909
* Condition variable waiters are queued in descending priority order, soJason Evans2001-05-181-9/+2
| | | | | | | | | | | there is no need to wake all waiters to assure that the highest priority thread is run. As the semaphore code is written, there was no correctness problem, but the change improves sem_post() performance. Pointed out by: deischen Notes: svn path=/head/; revision=76781
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