src/lib/libthr/thread/thr_setschedparam.c, branch release/7.0.0_cvs

This commit was manufactured by cvs2svn to create tag

2008-02-24T05:45:17+00:00

'RELENG_7_0_0_RELEASE'.

This commit was manufactured to restore the state of the 7.0-RELEASE image.

use rtprio_thread system call to get or set thread priority.

2006-09-21T04:21:30+00:00

Pass correct parameter size.

2006-09-05T14:37:22+00:00

Caching scheduling policy and priority in userland, a critical but baddly

2006-07-13T22:45:19+00:00

written application is frequently changing thread priority for SCHED_OTHER
policy.

Use thr_setscheduler, thr_getscheduler and thr_setschedparam to implement

2006-07-13T06:35:43+00:00

pthread functions.

Use kernel facilities to support real-time scheduling.

2006-07-12T06:13:18+00:00

- Use same priority range returned by kernel's sched_get_priority_min()

2006-04-27T08:18:23+00:00

  and sched_get_priority_max() syscalls.
- Remove unused fields from structure pthread_attr.

WARNS level 4 cleanup.

2006-04-04T02:57:49+00:00

Remove priority mutex code because it does not work correctly,

2006-03-27T23:50:21+00:00

to make it work, turnstile like mechanism to support priority
propagating and other realtime scheduling options in kernel
should be available to userland mutex, for the moment, I just
want to make libthr be simple and efficient thread library.

Discussed with: deischen, julian

Import my recent 1:1 threading working. some features improved includes:

2005-04-02T01:20:00+00:00

 1. fast simple type mutex.
 2. __thread tls works.
 3. asynchronous cancellation works ( using signal ).
 4. thread synchronization is fully based on umtx, mainly, condition
    variable and other synchronization objects were rewritten by using
    umtx directly. those objects can be shared between processes via
    shared memory, it has to change ABI which does not happen yet.
 5. default stack size is increased to 1M on 32 bits platform, 2M for
    64 bits platform.
As the result, some mysql super-smack benchmarks show performance is
improved massivly.

Okayed by: jeff, mtm, rwatson, scottl