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| author | davidxu <davidxu@FreeBSD.org> | 2003-03-19 05:49:38 +0000 |
|---|---|---|
| committer | davidxu <davidxu@FreeBSD.org> | 2003-03-19 05:49:38 +0000 |
| commit | 8e88e8da057497b66069752a6391f435c706b441 (patch) | |
| tree | 8bb70eacef4e1a4571ae518b0ff0001588c0db1b /sys/kern/kern_synch.c | |
| parent | 6564ae81018f9caddd72fe4b8f51c200cad0bd78 (diff) | |
| download | FreeBSD-src-8e88e8da057497b66069752a6391f435c706b441.zip FreeBSD-src-8e88e8da057497b66069752a6391f435c706b441.tar.gz | |
Adjust code for userland preemptive. Userland can set a quantum in
kse_mailbox to schedule an upcall, this is useful for userland timeout
routine, for example pthread_cond_timedwait().
Also extract upcall scheduling code from kse_reassign and create
a new function called thread_switchout to include these code.
Reviewed by: julain
Diffstat (limited to 'sys/kern/kern_synch.c')
| -rw-r--r-- | sys/kern/kern_synch.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/kern/kern_synch.c b/sys/kern/kern_synch.c index 3c0d5fa..0c479c7 100644 --- a/sys/kern/kern_synch.c +++ b/sys/kern/kern_synch.c @@ -501,8 +501,9 @@ mi_switch(void) PCPU_SET(switchtime, new_switchtime); CTR3(KTR_PROC, "mi_switch: old thread %p (pid %d, %s)", td, p->p_pid, p->p_comm); - sched_nest = sched_lock.mtx_recurse; + if (td->td_proc->p_flag & P_THREADED) + thread_switchout(td); sched_switchout(td); cpu_switch(); /* SHAZAM!!*/ |
