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Commit Graph

118 Commits

Author SHA1 Message Date
Wolfram Schneider
acd8019083 Sort cross references. 1998-08-31 16:41:09 +00:00
John Birrell
5f867deba5 Don't automatically restart syscalls for the signals that the thread
kernel needs.
1998-08-26 20:55:31 +00:00
John Birrell
353a159590 Back out most of the last commit. It created problems with sigpause. 1998-08-26 20:50:42 +00:00
John Birrell
4591e62dc7 Test program for sigwait.
Submitted by: Daniel M. Eischen <eischen@vigrid.com>
1998-08-25 12:35:16 +00:00
John Birrell
ad8f637466 Add support for building test programs. 1998-08-25 12:33:22 +00:00
John Birrell
42f37683ee Fix for sigwait problem.
Submitted by: Daniel M. Eischen <eischen@vigrid.com>
PR:           misc/7039
1998-08-25 11:19:14 +00:00
John Polstra
d89bd1ac0f Add missing initialization of the length variable passed to
getsockopt().  Use a separate variable for clarity, instead of
overloading an unrelated variable.
1998-08-12 20:29:29 +00:00
John Birrell
bbf157fac4 Add extra initialisation code that is required for processes that
are started instead of init (pid = 1). This allows an embedded
implementation quite like VxWorks, with (possibly) a single threaded
program running instead of init. The neat thing is that the same threaded
process can run in a multi-user workstation environment too.
1998-08-10 01:24:22 +00:00
Bruce Evans
30b854394a Changed prototype in synopsis to match prototype in <pthread.h>. 1998-08-03 16:54:51 +00:00
Alexander Langer
8ac3b85e63 The pthreads standard has been published. Change:
...is expected to conform to IEEE (``POSIX'') Std 1003.1c when it is
   published.
to:
   ...conforms to ISO/IEC 9945-1 ANSI/IEEE (``POSIX'') Std 1003.1 Second
   Edition 1996-07-12.

Discussed with:	jb
1998-08-03 00:58:37 +00:00
Alexander Langer
b4ff1b7295 A style fix for my previous commit. 1998-08-02 23:07:25 +00:00
Alexander Langer
27aa2e8958 Fixed a race condition during the first lock/trylock of a statically
initialized mutex.  Statically initialized mutexes are actually
initialized at first use (pthread_mutex_lock/pthread_mutex_trylock).
To prevent concurrent initialization by multiple threads, all
static initializations are now serialized by a spinlock.

Reviewed by:	jb
1998-08-02 17:04:25 +00:00
Poul-Henning Kamp
1fbdc08dfe I've put together man pages for the pthread_cleanup, pthread_cond, and
pthread_mutex routines. I've also tweaked pthread_create.3 to point to
pthread_cleanup_push(3) and pthread_cleanup_pop(3).

PR:		7450
Submitted by:	Brian Cully <shmit@kublai.com>
1998-07-31 09:09:19 +00:00
Bruce Evans
bcc58f6898 Fixed a printf format error. Didn't fix assumption that sigset_t is
integral.
1998-06-30 18:00:11 +00:00
John Birrell
ff09ba5fbb Add the missing {} that caused the function to return ESRCH if it
had to wait for the thread to exit and if the caller didn't want the
thread exit status.
1998-06-25 00:04:21 +00:00
John Birrell
b9148b8a3e Don't allow a SIGCHLD to wake up a thread if the process has the default
signal handler installed for SIGCHLD. The ACE MT_SOCK_Test was hanging
as the result of being interrupted when it didn't expect to be.
1998-06-17 22:29:12 +00:00
John Birrell
d989fc8faa If a thread is waiting on a child process to complete, the SIGCHLD
signal can arrive before the thread is woken from it's wait4. In this
case, don't return an EINTR, just set the thread state to running and
the wait4 wrapper will loop and get the exit status of the process.
1998-06-17 03:53:16 +00:00
Peter Wemm
02a93d74e0 Don't compile in the use of poll() when building libc_r. This isn't
so much a "fix", rather a bandaid to buy time to fix it properly
within the thread engine.
1998-06-14 11:25:46 +00:00
John Birrell
597035b4db If a short write, only loop if no error. 1998-06-14 09:36:14 +00:00
John Birrell
0b99d9d8ac Add poll to the list of hidden syscalls so that it gets renamed. This
propagates a bug (that there is no poll wrapper in libc_r), but it
prevents GNU configure scripts from trying to use it in preference
to select. libc_r really needs to change it's wait interface to use
poll instead of select because poll is more a superset of select that
the other way around.

This should allow the Roxen web server to work out-of-the-box. It's
configuration intercae is kinda neat. The code isn't. Shiver. 8-)
1998-06-12 02:21:27 +00:00
John Birrell
06ca87e9f7 Update the caller's descriptor masks even if there are none ready for
I/O for those applications that don't believe the return value of zero as
meaning that THERE ARE *NO* DESCRIPTORS READY.
1998-06-12 02:17:18 +00:00
John Birrell
8eb25828ad Check the access mode in the flags before waiting on a read or a write
that might never be possible if the file was not opened in the corrent
mode. This prevents a hang for bad programs. Why do people code like that?
1998-06-10 22:28:45 +00:00
John Birrell
aef774b0d5 Remove SA_RESTART from the signal dispatch in user-space since this
seems to be tripping up a lot of applications.
1998-06-10 22:25:18 +00:00
John Birrell
3c165ef7b7 When doing a F_SETFL, read the flags back so that the ones stored
in the file descriptor table are exactly what the kernel knows subject
to the O_NONBLOCK flag being requested by the user.
1998-06-10 22:24:12 +00:00
John Birrell
627961e45f Add a commented out CFLAGS entry that can be uncommented to compile thread
lock debug into libc_r. I don't know if this is the best place to document
this, but at least it is recorded somewhere. 8-)
1998-06-09 23:25:13 +00:00
John Birrell
ddc8afd422 Implement compile time debug support instead of tracking file name and
line number every time a file descriptor is locked.

This looks like a big change but it isn't. It should reduce the size
of libc_r and make it run slightly faster.
1998-06-09 23:21:05 +00:00
John Birrell
a675022188 Add compile time debug instead of doing this all the time. Reduce the
time that a thread keeps the file descriptor table locked. In particular,
perform malloc/free calls outside the lock and handle the situation
where two threads can race to initialise the table entry for the same
file descriptor.
1998-06-09 23:16:53 +00:00
John Birrell
3411c10600 Add support for compile time debug. This is enabled if libc_r is built
with -D_LOCK_DEBUG. This adds the file name and line number to each lock
call and these are stored in the spinlock structure. When using debug
mode, the lock function will check if the thread is trying to lock
something it has already locked. This is not supposed to happen because
the lock will be freed too early.

Without lock debug, libc_r should be smaller and slightly faster.
1998-06-09 23:13:10 +00:00
John Birrell
74ebed9424 POSIX says that pthread_exit() is not allowed to be called from a
cleanup destructor, so trap this case to prevent me from being being
burnt again by applications that try to do this. With this change, an
application (like one using a mis-configured ACE) will exit the process
after displaying a message quoting the POSIX section that the application
has violated.
1998-06-09 23:08:41 +00:00
John Birrell
27949f44dc Add compile time thread lock debug support.
Add a thread specific flag to trap the case where pthread_exit() is
called from a destructor in violation of the Posix standard.
1998-06-09 23:02:43 +00:00
John Birrell
7d24d0302f Delete the atomic unlock function since it is no longer required.
Simplify the atomic lock to just write a value of 1 to the lock instead
of taking the value passed by the caller (which just confused things).
1998-06-09 08:25:41 +00:00
John Birrell
3dcb4f7556 Atomic lock asm code for the alpha version of libc_r. 1998-06-09 08:21:55 +00:00
John Birrell
2d8a580416 Add a warning message for a thread locking against itself. This is
not supposed to happen, but I have seen bogus g++ code that causes
it.
1998-06-06 07:27:06 +00:00
John Birrell
c6831395f4 Simplify the handling of thread specific data. Only track if a key
is allocated or not, rather than keeping a count and attempting to
know it it is in-use. POSIX says that once a key is deleted, using the
key again results in undefined behaviour.
1998-06-06 07:24:24 +00:00
John Birrell
c359f976b4 Re-design the thread specific key structure. 1998-06-06 07:20:23 +00:00
John Birrell
717d1611f4 I got the last commit back to front. 1998-06-06 07:02:27 +00:00
John Birrell
756534d117 Fix the signal behaviour for internal states which set the thread
state to running despite the SA_RESTART flag which is really just for
syscalls.
1998-06-05 23:31:55 +00:00
John Birrell
fca35cd32f I shouldn't do things early in the morning.
I shouldn't do things early in the morning.
[...]
I shouldn't do things early in the morning.
1998-06-01 02:14:34 +00:00
John Birrell
23c82db7a3 send and recv are wrappered in libc, so they shouldn't appear here. 1998-06-01 02:12:15 +00:00
John Birrell
8680cc3c47 Remove some syscalls that should have been renamed (libc_r doesn't need
to wrapper them) and add a couple that should have been there.
1998-05-31 23:53:50 +00:00
John Birrell
382306949d Add some missing syscall wrappers. 1998-05-31 23:48:30 +00:00
John Birrell
5d359b97bb Remove some stale code.
Pointed out by: Amancio
1998-05-31 23:47:06 +00:00
John Birrell
d972680a31 Don't restart a syscall when a SIGCHLD is received by a thread waiting
on a child process.
1998-05-31 23:46:01 +00:00
John Birrell
01029f8f17 Make a copy of the caller's iovec array, mallocing if necessary,
and modify that if the writev() syscall does not completely write
all bytes in a single call.
1998-05-27 00:44:58 +00:00
John Birrell
b46dfe97ae Remove error check from call to set the file descriptor to non-blocking
instead of explicitly ignoring some errors. This allows for the case
where a device is naturally non-blocking.
1998-05-27 00:41:22 +00:00
John Birrell
e5a8a007e1 When doing a blocking write, keep looping until all the bytes are
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.
1998-05-25 21:45:52 +00:00
John Birrell
9839f9695a Treat the lock value as volatile. 1998-05-05 21:47:58 +00:00
James Raynard
c52c933ddd Typo fixes 1998-05-03 22:59:47 +00:00
John Birrell
b1ad8d9155 Cleanup in the child, not the parent.
Submitted by: Tor Egge <Tor.Egge@idi.ntnu.no>
1998-05-02 03:42:20 +00:00
John Birrell
96efcebdfc Fix the incremental priority increment.
PR: bin/6467 Marino Ladavac <lada@pc8811.gud.siemens.at>
1998-04-30 21:50:29 +00:00