src/lib/libpthread/thread/thr_sig.c, branch release/5.3.0_cvs

This commit was manufactured by cvs2svn to create tag

2004-11-04T19:12:42+00:00

'RELENG_5_3_0_RELEASE'.

This commit was manufactured to restore the state of the 5.3-RELEASE image.

Let debugger check signal, make SIGINFO works.

2004-07-13T22:52:11+00:00

Check pending signals, if there is signal will be unblocked by

2004-06-12T07:40:01+00:00

sigsuspend, thread shouldn't wait, in old code, it may be
ignored.
When a signal handler is invoked in sigsuspend, thread gets
two different signal masks, one is in thread structure,
sigprocmask() can retrieve it, another is in ucontext
which is a third parameter of signal handler, the former is
the result of sigsuspend mask ORed with sigaction's sa_mask
and current signal, the later is the mask in thread structure
before sigsuspend is called. After signal handler is called,
the mask in ucontext should be copied into thread structure,
and becomes CURRENT signal mask, then sigsuspend returns to
user code.

Reviewed by: deischen
Tested by: Sean McNeil

Kernel now supports per-thread sigaltstack, follow the change to

2004-01-03T02:40:27+00:00

enable sigaltstack for scope system thread.

Fix a typo.

2004-01-02T00:27:30+00:00

Implement sigaltstack() as per-threaded. Current only scope process thread

2003-12-29T23:21:09+00:00

is supported, for scope system process, kernel signal bits need to be
changed.

Reviewed by: deischen
Tested on  : i386 amd64 ia64

Correctly retrieve sigaction flags.

2003-12-28T12:20:04+00:00

Save and restore timeout field for signal frame just like what we did

2003-09-22T14:40:36+00:00

for interrupted field.
Also in _thr_sig_handler, retrieve current signal mask from kernel not
from ucp, the later is pre-unioned mask, not current signal mask.

Fix bogus comment and assign sigmask in critical region, use

2003-09-15T00:08:48+00:00

SIG_CANTMASK to remove unmaskable signal masks.

When invoking an old style signal handler, use true traditional BSD style to

2003-09-14T22:42:39+00:00

invoke signal handler.

Reviewed by: deischen