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* Fix a POSIX conformance bug. POSIX says sigwait should return error numberdavidxu2004-03-171-3/+3
| | | | in return value not in errno.
* Fixed a misspelling of 0 as NULL.bde2004-03-141-1/+1
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* style cleanup: Remove duplicate $FreeBSD$ tags.cperciva2004-02-101-2/+0
| | | | | | | | These files had tags after teh copyright notice, inside the comment block (incorrect, removed), and outside the comment block (correct). Approved by: rwatson (mentor)
* style cleanup: Remove duplicate $FreeBSD$ tags.cperciva2004-02-101-2/+0
| | | | | | | | These files had tags after the copyright notice, inside the comment block (incorrect, removed), and outside the comment block (correct). Approved by: rwatson (mentor)
* Add sem_timedwait to the symbol map, otherwise the libc version willdeischen2004-02-101-0/+2
| | | | get used.
* Add cancellation point to sem_wait() and sem_timedwait() for pshareddeischen2004-02-061-10/+18
| | | | | | | | semaphores. Also add cancellation cleanup handlers to keep semaphores in a consistent state. Submitted in part by: davidxu Reviewed by: davidxu
* libkse was renamed to libpthread.davidxu2004-02-051-1/+1
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* Provide a userland version of non-pshared semaphores and add cancellationdeischen2004-02-032-169/+153
| | | | points to sem_wait() and sem_timedwait(). Also make sem_post signal-safe.
* Now that libpthread is the default threading library, remove themarcel2004-01-311-12/+0
| | | | | compatibility link from libc_r to libpthread (previously a link from libc_r to libkse).
* Change libkse back to libpthread and make it the defaultdeischen2004-01-301-0/+4
| | | | | | | | | | | thread library for i386, amd64, and ia64. For alpha and sparc64 the library is not changed and remains libkse, and links are installed so that libpthread -> libc_r. The gcc -pthread option will be changed in a separate commit so that it links to -lpthread instead of -lc_r. Approved by: re@
* Return EPERM if mutex owner is not current thread but it tries todavidxu2004-01-171-18/+3
| | | | | | unlock the mutex, old code confuses some programs when it returns EINVAL. Noticed by: bland
* Have a single set of POSIX threads man pages. The LIBRARY sectionru2004-01-1450-4732/+0
| | | | | | | | of each manpage lists libraries that have corresponding interfaces implemented. Prodded by: threads Reviewed by: deischen
* Add a simple work-around for deadlocking on recursive read locksdeischen2004-01-083-48/+86
| | | | | | | | | | on a rwlock while there are writers waiting. We normally favor writers but when a reader already has at least one other read lock, we favor the reader. We don't track all the rwlocks owned by a thread, nor all the threads that own a rwlock -- we just keep a count of all the read locks owned by a thread. PR: 24641
* Kernel now supports per-thread sigaltstack, follow the change todavidxu2004-01-031-6/+1
| | | | enable sigaltstack for scope system thread.
* Return error code in errno, not in return value.davidxu2004-01-021-3/+6
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* Fix a typo.davidxu2004-01-021-1/+1
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* Removed MLINKS to nonimplemented/nonexistent functions.ru2003-12-301-3/+0
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* Merge from libc_r: document pthread_attr_[gs]etstack().ru2003-12-302-1/+11
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* Pull some changes (mostly cosmetic) from libc_r manpagesru2003-12-3030-75/+143
| | | | in preparation for the merge.
* Forgot to commit this file for last commit. :(davidxu2003-12-291-0/+4
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* Implement sigaltstack() as per-threaded. Current only scope process threaddavidxu2003-12-295-24/+233
| | | | | | | | is supported, for scope system process, kernel signal bits need to be changed. Reviewed by: deischen Tested on : i386 amd64 ia64
* Correctly retrieve sigaction flags.davidxu2003-12-281-2/+2
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* Replace a comment with more accurated one, memory heap is now protected bydavidxu2003-12-191-3/+2
| | | | new fork() wrapper.
* Code clean up, remove unused MACROS and function prototypes.davidxu2003-12-191-18/+0
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* accept() returns a file descriptor when it succeeds which is verydeischen2003-12-092-2/+2
| | | | | | | | | likely to be non-zero. When leaving the cancellation point, check the return value against -1 to see if cancellation should be checked. While I'm here, make the same change to connect() just to be consisitent. Pointed out by: davidxu
* Remove an unused struct definition.deischen2003-12-091-12/+0
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* Add cancellation points for accept() and connect().deischen2003-12-095-0/+106
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* Use mutex instead of low level thread lock to implement spinlock, thisdavidxu2003-12-091-30/+18
| | | | avoids signal to be blocked when otherwise it can be handled.
* Rename _thr_enter_cancellation_point to _thr_cancel_enter, renamedavidxu2003-12-0930-136/+148
| | | | | | | | | | | | | | | | | | | | | _thr_leave_cancellation_point to _thr_cancel_leave, add a parameter to _thr_cancel_leave to indicate whether cancellation point should be checked, this gives us an option to not check cancallation point if a syscall successfully returns to avoid any leaks, current I have creat(), open() and fcntl(F_DUPFD) to not check cancellation point after they sucessfully returned. Replace some members in structure kse with bit flags to same some memory. Conditionally compile THR_ASSERT to nothing if _PTHREAD_INVARIANTS is not defined. Inline some small functions in thr_cancel.c. Use __predict_false in thr_kern.c for some executed only once code. Reviewd by: deischen
* More reliably check timeout for pthread_mutex_timedlock.davidxu2003-12-091-1/+1
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* Go back to using rev 1.18 where thread locks are used instead of KSEdeischen2003-12-081-17/+16
| | | | | | | locks for [libc] spinlock implementation. This was previously backed out because it exposed a bug in ia64 implementation. OK'd by: marcel
* Simplify the contexts created by the kernel and remove the relatedmarcel2003-12-071-0/+6
| | | | | | | | | flags. We now create asynchronous contexts or syscall contexts only. Syscall contexts differ from the minimal ABI dictated contexts by having the scratch registers saved and restored because that's where we keep the syscall arguments and syscall return values. Since this change affects KSE, have it use kse_switchin(2) for the "new" syscall context.
* Apply a second fix for stack alignment with libkse. This time, enter thepeter2003-12-051-2/+2
| | | | | | | | | | | UTS with the stack correctly aligned. Also, while here, use an indirect jump rather than the pushq/ret hack. This fixes threaded apps that use floating point for me, although it hasn't solved all the problems. It is an improvement though. Preservation of the 128 byte red zone hasn't been resolved yet. Approved by: re (scottl)
* Eliminate two pushl by using call instruction directly, this reallydavidxu2003-11-291-2/+1
| | | | | | helps branch predict a lot for INTEL P4. Approved by: re (scottl)
* 1.Macro optimizing KSE_LOCK_ACQUIRE and THR_LOCK_ACQUIRE to use static falldavidxu2003-11-292-99/+31
| | | | | | | | | | | | | | through branch predict as suggested in INTEL IA32 optimization guide. 2.Allocate siginfo arrary separately to avoid pthread to be allocated at 2K boundary, which hits L1 address alias problem and causes context switch to be slow down. 3.Simplify context switch code by removing redundant code, code size is reduced, so it is expected to run faster. Reviewed by: deischen Approved by: re (scottl)
* Remove surplus mmap() call for stack guard page in init_private, it is donedavidxu2003-11-291-25/+0
| | | | | | | | in init_main_thread. Also don't initialize lock and lockuser again for initial thread, it is already done by _thr_alloc(). Reviewed by: deischen Approved by: re (scottl)
* Back out last change and go back to using KSE locks instead of threaddeischen2003-11-161-16/+17
| | | | | | locks until we know why this breaks ia64. Reported by: marcel
* If a thread in critical region got a synchronous signal, according currentdavidxu2003-11-091-0/+2
| | | | | | signal handling mode, there is no chance to handle the signal, something must be wrong in the library, just call kse_thr_interrupt to dump its core. I have the code for a long time, but forgot to commit it.
* Use THR lock instead of KSE lock to avoid scheduler be blocked in spinlock.davidxu2003-11-081-17/+16
| | | | Reviewed by: deischen
* style(9)deischen2003-11-051-40/+53
| | | | Reviewed by: bde
* Don't declare the malloc lock; use the declaration provided in libc.deischen2003-11-051-1/+6
| | | | Noticed by: bde
* Add pthread_atfork() source code. Dan forgot to commit this file.davidxu2003-11-051-0/+56
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* Add an implementation for pthread_atfork().deischen2003-11-046-6/+73
| | | | | | | | Aside from the POSIX requirements for pthread_atfork(), when fork()ing, take the malloc lock to keep malloc state consistent in the child. Reviewed by: davidxu
* Add the ability to reinitialize libpthread's internal FIFO-queueingdeischen2003-11-042-15/+57
| | | | | | locks. Reviewed by: davidxu
* Add the ability to reinitialize a spinlock (libc/libpthreaddeischen2003-11-041-12/+17
| | | | | | internal lock, not a pthread spinlock). Reviewed by: davidxu
* s/foo()/foo(void)/deischen2003-11-041-2/+3
| | | | Add a blank line after a variable declaration.
* Libpthread uses the convention that all of its (non-weak) symbolsdeischen2003-11-041-5/+11
| | | | | begin with underscores and provide weak definitions without underscores. Make the pthread spinlock conform to this convention.
* Add the ability to reinitialize a mutex (internally, not a userlanddeischen2003-11-041-7/+20
| | | | | | API). Reviewed by: davidxu
* Use amd64_set_fsbase() instead of calling sysarch() directly.peter2003-10-231-6/+1
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* This test relies on the concurrency level being 1; make it so.deischen2003-10-201-0/+3
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