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Add an actual implementation of kse_thr_interrupt()

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This commit is contained in:
David Xu 2002-10-30 02:28:41 +00:00
parent 7a966f2ded
commit 34e80e027d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=106180
4 changed files with 55 additions and 4 deletions
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22
sys/kern/kern_kse.c
View file

@ -270,8 +270,26 @@ proc_linkup(struct proc *p, struct ksegrp *kg,
int
kse_thr_interrupt(struct thread *td, struct kse_thr_interrupt_args *uap)
{
struct proc *p;
struct thread *td2;
return(ENOSYS);
p = td->td_proc;
mtx_lock_spin(&sched_lock);
FOREACH_THREAD_IN_PROC(p, td2) {
if (td2->td_mailbox == uap->tmbx) {
td2->td_flags |= TDF_INTERRUPT;
if (TD_ON_SLEEPQ(td2) && (td2->td_flags & TDF_SINTR)) {
if (td2->td_flags & TDF_CVWAITQ)
cv_abort(td2);
else
abortsleep(td2);
}
mtx_unlock_spin(&sched_lock);
return 0;
}
}
mtx_unlock_spin(&sched_lock);
return(ESRCH);
}
int
@ -1390,7 +1408,9 @@ thread_userret(struct thread *td, struct trapframe *frame)
* it would be nice if this all happenned only on the first time
* through. (the scan for extra work etc.)
*/
mtx_lock_spin(&sched_lock);
td->td_flags &= ~TDF_UPCALLING;
mtx_unlock_spin(&sched_lock);
#if 0
error = suword((caddr_t)ke->ke_mailbox +
offsetof(struct kse_mailbox, km_curthread), 0);

14
sys/kern/kern_synch.c
View file

@ -157,10 +157,15 @@ msleep(ident, mtx, priority, wmesg, timo)
if (p->p_flag & P_KSES) {
/*
* Just don't bother if we are exiting
* and not the exiting thread.
* and not the exiting thread or thread was marked as
* interrupted.
*/
if ((p->p_flag & P_WEXIT) && catch && (p->p_singlethread != td))
if (catch &&
(((p->p_flag & P_WEXIT) && (p->p_singlethread != td)) ||
(td->td_flags & TDF_INTERRUPT))) {
td->td_flags &= ~TDF_INTERRUPT;
return (EINTR);
}
mtx_lock_spin(&sched_lock);
if ((td->td_flags & (TDF_UNBOUND|TDF_INMSLEEP)) ==
TDF_UNBOUND) {
@ -277,6 +282,11 @@ msleep(ident, mtx, priority, wmesg, timo)
p->p_stats->p_ru.ru_nivcsw++;
mi_switch();
td->td_flags &= ~TDF_TIMOFAIL;
}
if ((td->td_flags & TDF_INTERRUPT) && (priority & PCATCH) &&
(rval == 0)) {
td->td_flags &= ~TDF_INTERRUPT;
rval = EINTR;
}
mtx_unlock_spin(&sched_lock);

22
sys/kern/kern_thread.c
View file

@ -270,8 +270,26 @@ proc_linkup(struct proc *p, struct ksegrp *kg,
int
kse_thr_interrupt(struct thread *td, struct kse_thr_interrupt_args *uap)
{
struct proc *p;
struct thread *td2;
return(ENOSYS);
p = td->td_proc;
mtx_lock_spin(&sched_lock);
FOREACH_THREAD_IN_PROC(p, td2) {
if (td2->td_mailbox == uap->tmbx) {
td2->td_flags |= TDF_INTERRUPT;
if (TD_ON_SLEEPQ(td2) && (td2->td_flags & TDF_SINTR)) {
if (td2->td_flags & TDF_CVWAITQ)
cv_abort(td2);
else
abortsleep(td2);
}
mtx_unlock_spin(&sched_lock);
return 0;
}
}
mtx_unlock_spin(&sched_lock);
return(ESRCH);
}
int
@ -1390,7 +1408,9 @@ thread_userret(struct thread *td, struct trapframe *frame)
* it would be nice if this all happenned only on the first time
* through. (the scan for extra work etc.)
*/
mtx_lock_spin(&sched_lock);
td->td_flags &= ~TDF_UPCALLING;
mtx_unlock_spin(&sched_lock);
#if 0
error = suword((caddr_t)ke->ke_mailbox +
offsetof(struct kse_mailbox, km_curthread), 0);

1
sys/sys/proc.h
View file

@ -331,6 +331,7 @@ struct thread {
#define TDF_ONSLEEPQ 0x000200 /* On the sleep queue. */
#define TDF_INMSLEEP 0x000400 /* Don't recurse in msleep(). */
#define TDF_TIMOFAIL 0x001000 /* Timeout from sleep after we were awake. */
#define TDF_INTERRUPT 0x002000 /* Thread is marked as interrupted. */
#define TDF_DEADLKTREAT 0x800000 /* Lock aquisition - deadlock treatment. */
#define TDI_SUSPENDED 0x01 /* On suspension queue. */