src/lib/libpthread/thread/thr_open.c, branch main

Repo copy libpthreads to libkse.

2007-10-09T14:16:39+00:00

This introduces the WITHOUT_LIBKSE nob,
and changes WITHOUT_LIBPTHREADS to mean with neither threading libs.
Approved by:	re(kensmith)

Remove 3rd clause, renumber, ok per email

2007-01-12T07:26:21+00:00

Add compatibility symbol maps. libpthread (.so.1 and .so.2)

2006-03-13T00:59:51+00:00

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

Rename _thr_enter_cancellation_point to _thr_cancel_enter, rename

2003-12-09T02:20:56+00:00

_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

Revamp libpthread so that it has a chance of working in an SMP

2003-04-18T05:04:16+00:00

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

Make libpthread KSE aware.

2002-09-16T19:52:52+00:00

Reviewed by:	deischen, julian
Approved by:	-arch

Make the changes needed for libpthread to compile in its new home.

2002-09-16T08:45:36+00:00

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

Typo; fix open() so that it is not a cancellation point when called

2001-04-18T12:42:11+00:00

from libc.

To be consistent, use the __weak_reference macro from

2001-04-10T04:19:21+00:00

instead of #pragma weak to create weak definitions.

Suggested by:	bde

Add weak definitions for wrapped system calls. In general:

2001-01-24T13:03:38+00:00

	_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