Commit Graph

13 Commits

Author SHA1 Message Date
Ruslan Ermilov
2efeeba554 mdoc(7) police: "The .Fa argument.". 2002-12-19 09:40:28 +00:00
Ruslan Ermilov
95f4226b27 mdoc(7) police: "The .Fn function". 2002-12-18 10:13:54 +00:00
Ruslan Ermilov
32eef9aeb1 mdoc(7) police: Use the new .In macro for #include statements. 2001-10-01 16:09:29 +00:00
Ruslan Ermilov
a307d59838 mdoc(7) police: removed HISTORY info from the .Os call. 2001-07-10 13:41:46 +00:00
Ruslan Ermilov
b5c508fba3 Use Fx macro wherever possible. 2000-11-14 11:20:58 +00:00
Jeroen Ruigrok van der Werven
5714e85318 Whitespace only change: trim trailing whitespace. 2000-10-30 13:23:19 +00:00
John Polstra
59a821dae2 Change the dllockinit() interface from "experimental" to
"deprecated" and warn that it will disappear eventually.
2000-07-08 04:17:28 +00:00
Alexey Zelkin
25bb73e063 Introduce ".Lb" macro to libc manpages.
More libraries manpages updates following.
2000-04-21 09:42:15 +00:00
John Polstra
4e1635fee5 Revive the warning that dllockinit() is experimental and subject to
change.
2000-01-29 01:33:21 +00:00
John Polstra
7f20578830 Remove the warning that this interface shouldn't be used yet. Fix
a typo.  Clarify a sentence.
2000-01-09 21:01:39 +00:00
Bruce Evans
a37e09e423 Fixed the type of dllockinit() (const unpoisoning).
Use long lines instead of lines split with backslash-newline in synopsis.
My synopsis checker doesn't understand backslash-newline.
2000-01-05 19:04:55 +00:00
John Polstra
3600eb76c6 Work around an assert failure in the dynamic linker's default thread
locking functions.  If an application loads a shared object with
dlopen() and the shared object has an init function which requires
lazy binding, then _rtld_bind is called when the thread is already
inside the dynamic linker.  This leads to a recursive acquisition
of the lock, which I was not expecting -- hence the assert failure.

This work-around makes the default locking functions handle recursive
locking.  It is NOT the correct fix -- that should be implemented
at the generic locking level rather than in the default locking
functions.  I will implement the correct fix in a future commit.

Since the dllockinit() interface will likely need to change, warn
about that in both the man page and the header file.
1999-12-28 04:38:17 +00:00
John Polstra
d3980376e8 Add a new function dllockinit() for registering thread locking
functions to be used by the dynamic linker.  This can be called by
threads packages at start-up time.  I will add the call to libc_r
soon.

Also add a default locking method that is used up until dllockinit()
is called.  The default method works by blocking SIGVTALRM, SIGPROF,
and SIGALRM in critical sections.  It is based on the observation
that most user-space threads packages implement thread preemption
with one of these signals (usually SIGVTALRM).

The dynamic linker has never been reentrant, but it became less
reentrant in revision 1.34 of "src/libexec/rtld-elf/rtld.c".
Starting with that revision, multiple threads each doing lazy
binding could interfere with each other.  The usual symptom was
that a symbol was falsely reported as undefined at start-up time.
It was rare but not unseen.  This commit fixes it.
1999-12-27 04:44:04 +00:00