| Commit message (Collapse) | Author | Age | Files | Lines |
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and modify that if the writev() syscall does not completely write
all bytes in a single call.
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written without returning to the caller. This only occurs on pipes
where either the number of bytes written is greater than the pipe
buffer or if there is insufficient space in the pipe buffer because the
reader is reading slower than the writer is writing.
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Submitted by: Tor Egge <Tor.Egge@idi.ntnu.no>
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PR: bin/6467 Marino Ladavac <lada@pc8811.gud.siemens.at>
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of the one in libc that contains the weak symbol for __error. FreeBSD's
make accumulates paths to the point that it can find *anything*, possibly
including the car keys.
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for the process, not a separate set for each thread). By default, the
process now only has signal handlers installed for SIGVTALRM, SIGINFO
and SIGCHLD. The thread kernel signal handler is installed for other
signals on demand. This means that SIG_IGN and SIG_DFL processing is now
left to the kernel, not the thread kernel.
Change the signal dispatch to no longer use a signal thread, and
call the signal handler using the stack of the thread that has the
signal pending.
Change the atomic lock method to use test-and-set asm code with
a yield if blocked. This introduces separate locks for each type
of object instead of blocking signals to prevent a context
switch. It was this blocking of signals that caused the performance
degradation the people have noted.
This is a *big* change!
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PS_SIGWAIT state.
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to EINTR.
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it was. Add a FILE_WAIT state and queue threads waiting for a FILE
lock. Start using the sys/queue.h macros instead of the way that MIT
pthreads did it.
Add a thread name to the private thread structure and a non-POSIX
function to set this. This helps (me at least) when sending a SIGINFO
to a threaded process to get a /tmp/uthread.dump to see what the
<expletive deleted> threads are doing this time. It is nice to be
able to recognise (yes, I spell that with an 's' too) which threads
are which.
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POSIX specified names can be declared in pthread.h.
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threads from invalid ones. The pthread structure is opaque to the user
so this change does not cause any incompatibilities.
Hopefully this change will help code that was written for draft 4
fail gracefully if the programmer ignores the compiler warning about
the change in the level of indirection for the argument passed to
pthread_detach(). I got burnt, so I fixed then (expletive deleted)
thing.
These functions comply with the revised standard. That should shut
Terry up!
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Add a note about not touching errno and warn about previous drafts
of the standard which changed the level of indirection to the thread
argument. POSIX had a bit of trouble deciding what to do. So anyone
coding to both draft 4 and draft 10 (the final draft) will get burnt
by this function. I did. Grrr.
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_KPOSIX_PRIORITY_SCHEDULING options to work. Changes:
Change all "posix4" to "p1003_1b". Misnamed files are left
as "posix4" until I'm told if I can simply delete them and add
new ones;
Add _POSIX_PRIORITY_SCHEDULING system calls for FreeBSD and Linux;
Add man pages for _POSIX_PRIORITY_SCHEDULING system calls;
Add options to LINT;
Minor fixes to P1003_1B code during testing.
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signals to be unblocked even if they were already blocked when entering
the function.
Pointed out by: bde
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other threads never see the light of day and if they leave things
locked, blame POSIX.
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Change MACHINE references to MACHINE_ARCH.
Declare the names of the syscalls that need to be renamed to allow
for the functions that libc_r provides replacements for. This list
used to be in lib/libc/sys/Makefile.inc, but has been moved here
to keep that makefile tidy and remove the temptation for people to
add things to the list without adding a libc_r replacement function.
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Change a bunch of __alpha references to __alpha__.
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from draft 4. Move some of the schedule definitions to sched.h which
is a POSIX header.
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specifically:
uthread_accept.c: Fix for inherited socket not getting correct entry in
pthread flags.
uthread_create.c: Fix to allow pthread_t pointer return to be null if
caller doesn't care about return.
uthread_fd.c: Fix for return codes to be placed into correct errno.
uthread_init.c: Changes to make gcc-2.8 thread aware for exception stack
frames (WARNING: This is #ifdef'ed out by default and is
different from the Cygnus egcs fix).
uthread_ioctl.c: Fix for blocking/non-blocking ioctl.
uthread_kern.c: Signal handling fixes (only one case left to fix,
that of an externally sent SIGSEGV and friends -
a fairly unusual case).
uthread_write.c: Fix for lock of fd - ask for write lock, not read/write.
uthread_writev.c: Fix for lock of fd - ask for write lock, not read/write.
Pthreads now works well enough to run the LDAP and ACAPD(with the gcc 2.8 fix)
sample implementations.
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provided is of type pthread_t instead of pthread_t *.
PR: 4320
Return EINVAL instead of ESRCH if attempting to detach an already
detached thread.
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functions would return -1 and set errno to indicate the specific error.
POSIX requires that the functions return the error code as the return
value of the function instead.
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Submitted by: Daniel M. Eischen <deischen@iworks.InterWorks.org>
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occurs (was EAGAIN, is now ETIMEDOUT).
Submitted by: Daniel M. Eischen <deischen@iworks.InterWorks.org>
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The addition of the nanosleep syscall was correctly added to
libc/sys/Makefile so that it is renamed as _thread_sys_nanosleep().
This syscall is one of those that libc_r has to re-implement because
the only behaviour is to block the process. So libc_r just ignores the
fact that a nanosleep syscall exists and goes its own way - as it has
done all along .... and now it does again. And now a simple program
can sleep again. Phew.
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PR: 3494
Submitted by: Steve Bauer <sbauer@rock.sdsmt.edu>
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Don't merge this into -2.2 unless you understand the dependencies on
c++rt0, bsd.lib.mk, and gcc -shared. I.e., let me do it.
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Added Id strings too. It's useful to know who last made a change.
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calling thread from being rescheduled based on an unspecified wakeup
time.
Bug/fix pointed out by Alexandre Fenyo <fenyo@email.enst.fr>.
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uthreads update from the author.
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This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.
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Submitted by: John Birrell <jb@cimlogic.com.au>
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Submitted by: John Birrell <jb@cimlogic.com.au>
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uthread_mattr_kind_np.c, uthread_multi_np.c, and uthread_single_np.c.
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Add pthread_mutexattr_default definition.
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specification: return parameter passing changed.
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