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If there are signals delivered to current thread, breaks out of loop,

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userret() will be called again by ast() and thread_userret() will be
called again by userret().

Reported by: tegge
This commit is contained in:
David Xu 2003-06-10 02:21:32 +00:00
parent 4aeece6a14
commit 36407bec4f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=116138
2 changed files with 6 additions and 8 deletions
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7
sys/kern/kern_kse.c
View File

@ -1637,8 +1637,6 @@ thread_userret(struct thread *td, struct trapframe *frame)
PROC_LOCK(p);
mtx_lock_spin(&sched_lock);
while (p->p_numthreads > max_threads_per_proc) {
if (P_SHOULDSTOP(p))
break;
upcalls = 0;
FOREACH_KSEGRP_IN_PROC(p, kg2) {
if (kg2->kg_numupcalls == 0)
@ -1650,8 +1648,9 @@ thread_userret(struct thread *td, struct trapframe *frame)
break;
mtx_unlock_spin(&sched_lock);
p->p_maxthrwaits++;
msleep(&p->p_numthreads, &p->p_mtx, PPAUSE|PCATCH,
"maxthreads", NULL);
if (msleep(&p->p_numthreads, &p->p_mtx, PPAUSE|PCATCH,
"maxthreads", NULL))
break;
p->p_maxthrwaits--;
mtx_lock_spin(&sched_lock);
}

7
sys/kern/kern_thread.c
View File

@ -1637,8 +1637,6 @@ thread_userret(struct thread *td, struct trapframe *frame)
PROC_LOCK(p);
mtx_lock_spin(&sched_lock);
while (p->p_numthreads > max_threads_per_proc) {
if (P_SHOULDSTOP(p))
break;
upcalls = 0;
FOREACH_KSEGRP_IN_PROC(p, kg2) {
if (kg2->kg_numupcalls == 0)
@ -1650,8 +1648,9 @@ thread_userret(struct thread *td, struct trapframe *frame)
break;
mtx_unlock_spin(&sched_lock);
p->p_maxthrwaits++;
msleep(&p->p_numthreads, &p->p_mtx, PPAUSE|PCATCH,
"maxthreads", NULL);
if (msleep(&p->p_numthreads, &p->p_mtx, PPAUSE|PCATCH,
"maxthreads", NULL))
break;
p->p_maxthrwaits--;
mtx_lock_spin(&sched_lock);
}