#
272461 |
|
02-Oct-2014 |
gjb |
Copy stable/10@r272459 to releng/10.1 as part of the 10.1-RELEASE process.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation |
#
256281 |
|
10-Oct-2013 |
gjb |
Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.
Approved by: re (implicit) Sponsored by: The FreeBSD Foundation
|
#
174689 |
|
16-Dec-2007 |
deischen |
Remove hacks to allow libkse to export its symbols in the LIBTHREAD_1_0 version namespace which was needed before the library version was bumped.
|
#
174112 |
|
30-Nov-2007 |
deischen |
WARNS=3'ify.
|
#
172491 |
|
09-Oct-2007 |
obrien |
Repo copy libpthreads to libkse. This introduces the WITHOUT_LIBKSE nob, and changes WITHOUT_LIBPTHREADS to mean with neither threading libs. Approved by: re(kensmith)
|
#
156611 |
|
12-Mar-2006 |
deischen |
Add compatibility symbol maps. libpthread (.so.1 and .so.2) used LIBTHREAD_1_0 as its version definition, but now needs to define its symbols in the same namespace used by libc. The compatibility hooks allows you to use libraries and binaries built and linked to libpthread before libc was built with symbol versioning. The shims can be removed if libpthread is given a version bump.
Reviewed by: davidxu
|
#
117300 |
|
07-Jul-2003 |
davidxu |
Avoid accessing user provided parameters in critical region.
Reviewed by: deischen
|
#
113658 |
|
18-Apr-2003 |
deischen |
Revamp libpthread so that it has a chance of working in an SMP 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
|
#
103388 |
|
16-Sep-2002 |
mini |
Make the changes needed for libpthread to compile in its new home. 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
|
#
75369 |
|
10-Apr-2001 |
deischen |
To be consistent, use the __weak_reference macro from <sys/cdefs.h> instead of #pragma weak to create weak definitions.
Suggested by: bde
|
#
71581 |
|
24-Jan-2001 |
deischen |
Add weak definitions for wrapped system calls. In general:
_foo - wrapped system call foo - weak definition to _foo
and for cancellation points:
_foo - wrapped system call __foo - enter cancellation point, call _foo(), leave cancellation point foo - weak definition to __foo
Change use of global _thread_run to call a function to get the currently running thread.
Make all pthread_foo functions weak definitions to _pthread_foo, where _pthread_foo is the implementation. This allows an application to provide its own pthread functions.
Provide slightly different versions of pthread_mutex_lock and pthread_mutex_init so that we can tell the difference between a libc mutex and an application mutex. Threads holding mutexes internal to libc should never be allowed to exit, call signal handlers, or cancel.
Approved by: -arch
|
#
67097 |
|
13-Oct-2000 |
deischen |
Implement zero system call thread switching. Performance of thread switches should be on par with that under scheduler activations.
o Timing is achieved through the use of a fixed interval timer (ITIMER_PROF) to count scheduling ticks instead of retrieving the time-of-day upon every thread switch and calculating elapsed real time.
o Polling for I/O readiness is performed once for each scheduling tick instead of every thread switch.
o The non-signal saving/restoring versions of setjmp/longjmp are used to save and restore thread contexts. This may allow the removal of _THREAD_SAFE macros from setjmp() and longjmp() - needs more investigation.
Change signal handling so that signals are handled in the context of the thread that is receiving the signal. When signals are dispatched to a thread, a special signal handling frame is created on top of the target threads stack. The frame contains the threads saved state information and a new context in which the thread can run. The applications signal handler is invoked through a wrapper routine that knows how to restore the threads saved state and unwind to previous frames.
Fix interruption of threads due to signals. Some states were being improperly interrupted while other states were not being interrupted. This should fix several PRs.
Signal handlers, which are invoked as a result of a process signal (not by pthread_kill()), are now called with the code (or siginfo_t if SA_SIGINFO was set in sa_flags) and sigcontext_t as received from the process signal handler.
Modify the search for a thread to which a signal is delivered. The search algorithm is now:
o First thread found in sigwait() with signal in wait mask. o First thread found sigsuspend()'d on the signal. o Current thread if signal is unmasked. o First thread found with signal unmasked.
Collapse machine dependent support into macros defined in pthread_private.h. These should probably eventually be moved into separate MD files.
Change the range of settable priorities to be compliant with POSIX (0-31). The threads library uses higher priorities internally for real-time threads (not yet implemented) and threads executing signal handlers. Real-time threads and threads running signal handlers add 64 and 32, respectively, to a threads base priority.
Some other small changes and cleanups.
PR: 17757 18559 21943 Reviewed by: jasone
|
#
53812 |
|
28-Nov-1999 |
alfred |
add pthread_cancel, obtained from OpenBSD.
eischen (Daniel Eischen) added wrappers to protect against cancled threads orphaning internal resources.
the cancelability code is still a bit fuzzy but works for test programs of my own, OpenBSD's and some examples from ORA's books.
add readdir_r to both libc and libc_r
add some 'const' attributes to function parameters
Reviewed by: eischen, jasone
|
#
50476 |
|
27-Aug-1999 |
peter |
$Id$ -> $FreeBSD$
|
#
49439 |
|
05-Aug-1999 |
deischen |
Add RCS IDs to those files without them. Fix copyrights (s/REGENTS/AUTHOR).
Suggested by: tg Approved by: jb
|
#
44963 |
|
23-Mar-1999 |
jb |
[ The author's description... ]
o Runnable threads are now maintained in priority queues. The implementation requires two things:
1.) The priority queues must be protected during insertion and removal of threads. Since the kernel scheduler must modify the priority queues, a spinlock for protection cannot be used. The functions _thread_kern_sched_defer() and _thread_kern_sched_undefer() were added to {un}defer kernel scheduler activation.
2.) A thread (active) priority change can be performed only when the thread is removed from the priority queue. The implementation uses a threads active priority when inserting it into the queue.
A by-product is that thread switches are much faster. A separate queue is used for waiting and/or blocked threads, and it is searched at most 2 times in the kernel scheduler when there are active threads. It should be possible to reduce this to once by combining polling of threads waiting on I/O with the loop that looks for timed out threads and the minimum timeout value.
o Functions to defer kernel scheduler activation were added. These are _thread_kern_sched_defer() and _thread_kern_sched_undefer() and may be called recursively. These routines do not block the scheduling signal, but latch its occurrence. The signal handler will not call the kernel scheduler when the running thread has deferred scheduling, but it will be called when running thread undefers scheduling.
o Added support for _POSIX_THREAD_PRIORITY_SCHEDULING. All the POSIX routines required by this should now be implemented. One note, SCHED_OTHER, SCHED_FIFO, and SCHED_RR are required to be defined by including pthread.h. These defines are currently in sched.h. I modified pthread.h to include sched.h but don't know if this is the proper thing to do.
o Added support for priority protection and inheritence mutexes. This allows definition of _POSIX_THREAD_PRIO_PROTECT and _POSIX_THREAD_PRIO_INHERIT.
o Added additional error checks required by POSIX for mutexes and condition variables.
o Provided a wrapper for sigpending which is marked as a hidden syscall.
o Added a non-portable function as a debugging aid to allow an application to monitor thread context switches. An application can install a routine that gets called everytime a thread (explicitly created by the application) gets context switched. The routine gets passed the pthread IDs of the threads that are being switched in and out.
Submitted by: Dan Eischen <eischen@vigrid.com>
Changes by me:
o Added a PS_SPINBLOCK state to deal with the priority inversion problem most often (I think) seen by threads calling malloc/free/realloc.
o Dispatch signals to the running thread directly rather than at a context switch to avoid the situation where the switch never occurs.
|