src/lib/libpthread/thread/thr_cancel.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.

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

Fix some comments for last commit.

2003-10-08T00:30:38+00:00

Use thread lock instead of scheduler lock to eliminate lock contention

2003-10-08T00:17:13+00:00

for all wrapped syscalls under SMP.

Reviewed by: deischen

If thread mode is not activated yet, don't do extra work.

2003-08-10T22:07:28+00:00

Reviewed by: deischen

Rethink the MD interfaces for libpthread to account for

2003-08-05T22:46:00+00:00

archs that can (or are required to) have per-thread registers.

Tested on i386, amd64; marcel is testing on ia64 and will
have some follow-up commits.

Reviewed by:	davidxu

Move idle kse wakeup to outside of regions where locks are held.

2003-07-23T02:11:07+00:00

This eliminates ping-ponging of locks, where the idle KSE wakes
up only to find the lock it needs is being held.  This gives
little or no gain to M:N mode but greatly speeds up 1:1 mode.

Reviewed & Tested by:	davidxu

o Eliminate upcall for PTHREAD_SYSTEM_SCOPE thread, now it

2003-07-17T23:02:30+00:00

  is system bound thread and when it is blocked, no upcall is generated.

o Add ability to libkse to allow it run in pure 1:1 threading mode,
  defining SYSTEM_SCOPE_ONLY in Makefile can turn on this option.

o Eliminate code for installing dummy signal handler for sigwait call.

o Add hash table to find thread.

Reviewed by: deischen

Avoid accessing user provided parameters in critical region.

2003-07-07T04:28:23+00:00

Reviewed by: deischen

Fix typo.

2003-07-02T13:23:03+00:00