Commit Graph

28 Commits

Author SHA1 Message Date
tegge
af67e8b5e1 Don't depend on lcl_mutex being a recursive mutex.
Reviewed by:	deischen
2001-02-15 22:17:04 +00:00
deischen
1635c221b7 Remove _THREAD_SAFE and make libc thread-safe by default by
adding (weak definitions to) stubs for some of the pthread
functions.  If the threads library is linked in, the real
pthread functions will pulled in.

Use the following convention for system calls wrapped by the
threads library:
	__sys_foo - actual system call
	_foo - weak definition to __sys_foo
	foo - weak definition to __sys_foo

Change all libc uses of system calls wrapped by the threads
library from foo to _foo.  In order to define the prototypes
for _foo(), we introduce namespace.h and un-namespace.h
(suggested by bde).  All files that need to reference these
system calls, should include namespace.h before any standard
includes, then include un-namespace.h after the standard
includes and before any local includes.  <db.h> is an exception
and shouldn't be included in between namespace.h and
un-namespace.h  namespace.h will define foo to _foo, and
un-namespace.h will undefine foo.

Try to eliminate some of the recursive calls to MT-safe
functions in libc/stdio in preparation for adding a mutex
to FILE.  We have recursive mutexes, but would like to avoid
using them if possible.

Remove uneeded includes of <errno.h> from a few files.

Add $FreeBSD$ to a few files in order to pass commitprep.

Approved by:	-arch
2001-01-24 13:01:12 +00:00
cracauer
4c5ed2febd Temporary cosmetic change to prevent gcc-2.95.2 from doing an
optimization that generates code our current as doesn't understand.

The result is bad code that damages dynamic symbol locations at
runtime. Ouch. See PR bin/16862 and discussion in -current.

This change will be backed out when gcc and gas are back in sync.

PR:		Fixes bin/16862, but not the underlying problem.
Submitted by:	bde
Approved by:	jdk
2000-03-08 12:46:25 +00:00
jasone
8abe2a2d86 Simplify sytem call renaming. Instead of _foo() <-- _libc_foo <-- foo(),
just use _foo() <-- foo().  In the case of a libpthread that doesn't do
call conversion (such as linuxthreads and our upcoming libpthread), this
is adequate.  In the case of libc_r, we still need three names, which are
now _thread_sys_foo() <-- _foo() <-- foo().

Convert all internal libc usage of: aio_suspend(), close(), fsync(), msync(),
nanosleep(), open(), fcntl(), read(), and write() to _foo() instead of foo().

Remove all internal libc usage of: creat(), pause(), sleep(), system(),
tcdrain(), wait(), and waitpid().

Make thread cancellation fully POSIX-compliant.

Suggested by:	deischen
2000-01-27 23:07:25 +00:00
jasone
75903038bc Add three-tier symbol naming in support of POSIX thread cancellation
points.  For library functions, the pattern is __sleep() <--
_libc_sleep() <-- sleep().  The arrows represent weak aliases.  For
system calls, the pattern is _read() <-- _libc_read() <-- read().
2000-01-12 09:23:48 +00:00
wollman
eb63a8058f Merge from vendor branch: timezone file structure changes and doco.
Fix localtime.c to deal with new magic number field.

Obtained from: ftp://elsie.nci.nih.gov/pub/tzcode1999a.tar.gz
1999-01-21 17:22:59 +00:00
dt
c09e434e50 Make ctime_r, asctime_r, gmtime_r, and localtime_r available in libc. 1999-01-04 20:45:20 +00:00
imp
bfe73fd683 Replace memory leaking instances of realloc with non-leaking reallocf.
In some cases replace if (a == null) a = malloc(x); else a =
realloc(a, x); with simple reallocf(a, x).  Per ANSI-C, this is
guaranteed to be the same thing.

I've been running these on my system here w/o ill effects for some
time.  However, the CTM-express is at part 6 of 34 for the CAM
changes, so I've not been able to do a build world with the CAM in the
tree with these changes.  Shouldn't impact anything, but...
1998-09-16 04:17:47 +00:00
phk
90a1b69b83 Add a #ifdef _THREAD_SAFE around ctime_r 1998-04-20 10:09:37 +00:00
phk
6d7eb64b15 ctime_r and asctime_r are not implemented.
prototypes in time.h do not match POSIX.

PR:		6345
Reviewed by:	phk
Submitted by:	Dmitry Khrustalev <dima@xyzzy.machaon.ru>
1998-04-19 06:47:25 +00:00
jb
43c2287620 Change in name of the static initializer define. 1998-04-04 11:03:07 +00:00
julian
6d639f103c Submitted by: Jeremy Allison (jallison@whistle.com)
fix a slight confusion about which draft of threads we are supporting.
this allows something as big and ugly as samba to be compiled with libc_r
and still work!  our user-level pthreads seems amazingly robust!
1998-02-18 01:20:33 +00:00
imp
f8040b7f54 Back out 1.14 until I reproduce trouble reports 1997-03-25 05:34:31 +00:00
imp
52677342d6 Don't open the tz file if we're running setuid or setgid to prevent infomration
leakage.

Submitted by:	Julian Assange
1997-03-24 06:09:50 +00:00
julian
c2f7c3e489 Submitted by: John Birrell
uthreads update from the author.
1997-02-05 23:26:09 +00:00
wollman
ea03e008b1 When attempting to load a `lastditch' timezone (e.g., because the load
of the user's timezone failed), don't bail if the specified timezone
doesn't have an offset; in this case it isn't going to.  (Perhaps it would
be better to change the caller to always supply one, but this is quick
and clean and fixes the bug in the easiest possible way.)

Should be in 2.2.  Fixes (properly) PR#1740.
1997-01-13 17:12:23 +00:00
hsu
9c65a1a186 Parameters for localtime_r() and gmtime_r() definitions changed.
Parameters for pthread_getspecific() call changed.
pthread_keycreate() renamed to pthread_key_create().
1996-11-11 09:14:24 +00:00
wollman
3d953050fb Require that a timezone specified via the TZ envariable be a regular
file (and not a directory or a device which might also be readable).
Closes PR#1740.
1996-10-09 17:39:37 +00:00
julian
7350d1d3b2 Submitted by: John Birrell <cimaxp1!jb@werple.net.au>
Here are the diffs for libc_r to get it one step closer to P1003.1c
These make most of the thread/mutex/condvar structures opaque to the
user. There are three functions which have been renamed with _np
suffixes because they are extensions to P1003.1c (I did them for JAVA,
which needs to suspend/resume threads and also start threads suspended).

I've created a new header (pthread_np.h) for the non-POSIX stuff.

The egrep tags stuff in /usr/src/lib/libc_r/Makefile that I uncommented
doesn't work. I think its best to delete it. I don't think libc_r needs
tags anyway, 'cause most of the source is in libc which does have tags.

also:

Here's the first batch of man pages for the thread functions.
The diff to /usr/src/lib/libc_r/Makefile removes some stuff that was
inherited from /usr/src/lib/libc/Makefile that should only be done with
libc.

also:

I should have sent this diff with the pthread(3) man page.
It allows people to type

make -DWANT_LIBC_R world

to get libc_r built with the rest of the world. I put this in the
pthread(3) man page.  The default is still not to build libc_r.


also:
The diff attached adds a pthread(3) man page to /usr/src/share/man/man3.
The idea is that without libc_r installed, this man page will give people
enough info to know that they have to build libc_r.
1996-08-20 08:22:01 +00:00
wollman
f90be6962c Merge the recently-imported tzcode96h distribution (libc portion). The
part that does zic(8)/zdump(8) is still yet to be imported (but the old
zic and zdump will work just fine with these header files and the
data format has not changed).
1996-07-18 18:53:15 +00:00
scrappy
c2a4a97427 Removed false copyrights... 1996-05-27 06:54:03 +00:00
scrappy
9ec60f586a Added in appropriate Berkeley copyright and RCS Id: string
Closes PR#doc/536
1996-05-27 04:10:28 +00:00
julian
619b731f5b Reviewed by: julian and (hsu?)
Submitted by:	 John Birrel(L?)

changes for threadsafe operations
1996-01-22 00:02:33 +00:00
wollman
58f52714ed The European Commission went out and invented a new sort of summer-time
changeover, so we have to extend the format of timezone files (in a backward-
compatible way, of course).  This probably means that libc needs a minor
version number bump before 2.2 is released (or maybe not).
1995-08-05 20:28:08 +00:00
rgrimes
f05428e4cd Remove trailing whitespace. 1995-05-30 05:51:47 +00:00
wollman
b80021e668 Port to FreeBSD. Not ready for inclusion in libc just yet, but here
so we can compile zic.
1994-09-13 03:50:58 +00:00
wollman
448e2f9aba One more try, and if it doesn't work this time I'm giving up.
(Check in original localtime.c.)
1994-09-13 03:44:49 +00:00
wollman
cbc72118ba The rest of tzcode94g from Arthur David Olson.
Obtained From: Arthur David Olson, ftp://elsie.nci.nih.gov/pub/tzcode94g.tar.gz
1994-09-13 03:39:01 +00:00