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* Move the mailbox to the beginning of the thread and align thedeischen2003-04-305-7/+24
| | | | thread so that the context (SSE FPU state) is also aligned.
* Call kse_wakeup_mutli() after remove current thread from RUNQ to avoiddavidxu2003-04-301-1/+1
| | | | doing unnecessary idle kse wakeup.
* Call kse_wakeup_multi() to wakeup idle KSEs when there are threads readydavidxu2003-04-301-0/+1
| | | | to run.
* Jump to the correct label upon detecting an error.deischen2003-04-291-2/+2
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* Create the thread signal lock as a KSE lock (as opposed todeischen2003-04-293-22/+23
| | | | | | | | | | | | a thread lock). Better protect access to thread state while searching for threads to handle a signal. Better protect access to process pending signals while processing a thread in sigwait(). Submitted by: davidxu
* o Don't add a scope system thread's KSE to the list of availabledeischen2003-04-2818-159/+322
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | KSEs when it's thread exits; allow the GC handler to do that. o Make spinlock/spinlock critical regions. The following were submitted by davidxu o Alow thr_switch() to take a null mailbox argument. o Better protect cancellation checks. o Don't set KSE specific data when creating new KSEs; rely on the first upcall of the KSE to set it. o Add the ability to set the maximum concurrency level and do this automatically. We should have a way to enable/disable this with some sort of tunable because some applications may not want this to be the default. o Hold the scheduling lock across thread switch calls. o If scheduling of a thread fails, make sure to remove it from the list of active threads. o Better protect accesses to a joining threads when the target thread is exited and detached. o Remove some macro definitions that are now provided by <sys/kse.h>. o Don't leave the library in threaded mode if creation of the initial KSE fails. o Wakeup idle KSEs when there are threads ready to run. o Maintain the number of threads active in the priority queue.
* Use the correct link entry for walking the list of threads.deischen2003-04-281-9/+2
| | | | | | | | While I'm here, use the TAILQ_FOREACH macro instead of a more manual method which was inherited from libc_r (so we could remove elements from the list which isn't needed for libpthread). Submitted by: Kazuaki Oda <kaakun@highway.ne.jp>
* Remove the %gs restoring hack (already commented out).deischen2003-04-251-6/+1
| | | | | | | Don't install man pages. Temporarily (again) rename the library to libkse. It will be put back to libpthread after more wide-spread testing.
* Add a macro to get the current thread mailbox pointer.deischen2003-04-231-0/+1
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* Remove the i386-specific hack (well, we only run on i386 anyways)deischen2003-04-231-4/+4
| | | | | | to always set %gs when resuming a thread. Install this library as libpthread instead of libkse.
* Protect thread errno from being changed while operatingdeischen2003-04-233-1/+38
| | | | | | | | on behalf of the KSE. Add a kse_reinit function to reinitialize a reused KSE. Submitted by: davidxu
* Set the quantum for scope system threads to 0 (no quantum).deischen2003-04-221-0/+2
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* Add a working pthread_[gs]etconcurrency. Initial null implementationdeischen2003-04-222-0/+121
| | | | | | | | | provided by Sergey A. Osokin <osa@freebsd.org.ru>. In order to test this on a single CPU machine, you need to: sysctl kern.threads.debug=1 sysctl kern.threads.virtual_cpu=2
* Add a couple asserts to pthread_cond_foo to ensure the (low-level)deischen2003-04-225-21/+72
| | | | | | | | | | | | | | | lock level is 0. Thus far, the threads implementation doesn't use mutexes or condition variables so the lock level should be 0. Save the return value when trying to schedule a new thread and use this to return an error from pthread_create(). Change the max sleep time for an idle KSE to 1 minute from 2 minutes. Maintain a count of the number of KSEs within a KSEG. With these changes scope system threads seem to work, but heavy use of them crash the kernel (supposedly VM bugs).
* Add an i386-specifc hack to always set %gs. There still seemsdeischen2003-04-217-183/+290
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | to be instances where the kernel doesn't properly save and/or restore it. Use noupcall and nocompleted flags in the KSE mailbox. These require kernel changes to work which will be committed sometime later. Things still work without the changes. Remove the general kse entry function and use two different functions -- one for scope system threads and one for scope process threads. The scope system function is not yet enabled and we use the same function for all threads at the moment. Keep a copy of the KSE stack for the case that a KSE runs a scope system thread and uses the same stack as the thread (no upcalls are generated, so a separate stack isn't needed). This isn't enabled yet. Use a separate field for the KSE waiting flag. It isn't correct to use the mailbox flags field. The following fixes were provided by David Xu: o Initialize condition variable locks with thread versions of the low-level locking functions instead of the kse versions. o Enable threading before creating the first thread instead of after. o Don't enter critical regions when trying to malloc/free or call functions that malloc/free. o Take the scheduling lock when inheriting thread attributes. o Check the attribute's stack pointer instead of the attributes stack size for null when allocating a thread's stack. o Add a kseg reinit function so we don't have to destroy and then recreate the same lock. o Check the return value of kse_create() and return an appropriate error if it fails. o Don't forget to destroy a thread's locks when freeing it. o Examine the correct flags word for checking to see if a thread is in a synchronization queue. Things should now work on an SMP kernel.
* Use popfl to get the flags off the stack instead of popf.deischen2003-04-211-1/+1
| | | | Submitted by: davidxu
* Remove duplicate $FreeBSD$ id.deischen2003-04-181-3/+1
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* Sorry folks; I accidentally committed a patch from what I was workingdeischen2003-04-1819-204/+321
| | | | | | on a couple of days ago. This should be the most recent changes. Noticed by: davidxu
* Comment out the addition of -g to CFLAGS. This snuck in fromdeischen2003-04-181-1/+1
| | | | my local version.
* Revamp libpthread so that it has a chance of working in an SMPdeischen2003-04-1875-3891/+5329
| | | | | | | | | | | | | | | | | | | environment. This includes support for multiple KSEs and KSEGs. The ability to create more than 1 KSE via pthread_setconcurrency() is in the works as well as support for PTHREAD_SCOPE_SYSTEM threads. Those should come shortly. There are still some known issues which davidxu and I are working on, but it'll make it easier for us by committing what we have. This library now passes all of the ACE tests that libc_r passes with the exception of one. It also seems to work OK with KDE including konqueror, kwrite, etc. I haven't been able to get mozilla to run due to lack of java plugin, so I'd be interested to see how it works with that. Reviewed by: davidxu
* Add FIFO queueing locking operations based on atomic swap.deischen2003-04-184-7/+370
| | | | | | Modify thread errno for the new libpthread changes. Reviewed by: davidxu
* Add architecture dependent atomic ops (atomic_swap only), KSE specificdeischen2003-04-187-10/+602
| | | | | | | data, and userland versions of [gs]etcontext(). Modify the UTS entry and exit functions to account of FPU validity and format.
* - Define a _spinunlock() function so that threading implementations may dojeff2003-03-261-0/+7
| | | | | | more complicated things than just setting the lock to 0. - Implement stubs for this function in libc and the two threading libraries that are currently in the tree.
* Backout last commit.davidxu2003-03-151-1/+1
| | | | Requested by: jhb
* Fix a bug in rwlock. When a rwlock was locked by reader threads, adavidxu2003-03-141-1/+1
| | | | writter thread can block reader threads to get read lock.
* Fix cut'n'paste errorphantom2003-03-051-1/+1
| | | | Noticed by: julian
* MFlibc_r: add and document pthread_attr_get_np() function.phantom2003-03-034-0/+174
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* Fix compiling error.davidxu2003-02-261-1/+1
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* Insert threads interrupted by a signal while running onto the run queue.mini2003-02-232-26/+3
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* Add signal logic to the build.mini2003-02-231-0/+2
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* Deliver signals posted via an upcall to the appropriate thread.mini2003-02-176-525/+274
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* Actually link in the attr_{set,get}stack.alfred2003-02-111-0/+2
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* Add pthread_attr_getstack() and pthread_attr_setstack().alfred2003-02-102-0/+117
| | | | Submitted by: Craig Rodrigues <rodrigc@attbi.com>
* remove #ifdef _THREAD_SAFEfjoe2003-01-241-2/+0
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* english(4) police.schweikh2002-12-272-2/+2
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* mdoc(7) police: Deal with self-xrefs.ru2002-12-242-4/+4
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* For now, build and install this as libkse instead of libpthread.deischen2002-12-082-3/+3
| | | | | | | This will avoid any accidental use of an experimental library. Suggested by: rwatson Approved by: re (jhb)
* Schedule spinlocked threads by moving them through the work queue, insteadmini2002-11-241-2/+15
| | | | | | | of the wait queue. Approved by: re (blanket) Stolen from: davidxu
* Get the wall clock time from the KSE mailbox, rather than doing anothermini2002-11-241-2/+2
| | | | syscall.
* Directly load %edx from mailboxdavidxu2002-11-231-4/+3
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* In _thread_enter_uts, fix eflags saving bug.davidxu2002-11-222-7/+15
| | | | | | | | In _thread_switch, set current thread pointer in kse mailbox only after all registers copied out of thread mailbox, kernel will do upcall at trap time, if set current thread pointer before loading all registers from thread mailbox, at trap time, the thread mailbox data will be overwritten by kernel, result is junk data is loaded into CPU.
* Fix idle timeout bug, use correct current time of day.davidxu2002-11-201-2/+2
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* Adjust code for new mailbox format.davidxu2002-11-181-3/+3
| | | | Reviewed by: deischen, mini
* Schedule an idle context to block until timeouts expire without blockingmini2002-11-123-107/+89
| | | | further upcalls.
* Make pthread_sigmask(3) operate on the thread signal mask, not the processmini2002-10-301-1/+27
| | | | signal mask.
* Use KSE to schedule threads.mini2002-10-3010-259/+552
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* Add the 'restrict' type qualifier to the prototypes of `sigaction',robert2002-10-022-2/+2
| | | | | | `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.
* Zap now-unused SHLIB_MINORpeter2002-09-281-1/+0
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* Make libpthread KSE aware.mini2002-09-1626-2395/+135
| | | | | Reviewed by: deischen, julian Approved by: -arch
* Mechanically change all libc_r references to libpthread.mini2002-09-1652-55/+55
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