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Add a thread_unlink() and use it.

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It could also be used twice in kern_thr.c but that's owned by jeff
so I'l let him change it when he's next there.
This commit is contained in:
Julian Elischer 2003-04-18 00:16:13 +00:00
parent 87d88cec87
commit d3a0bd78a8
3 changed files with 29 additions and 22 deletions
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25
sys/kern/kern_kse.c
View File

@ -1198,17 +1198,7 @@ thread_exit(void)
* all this stuff.
*/
if (p->p_numthreads > 1) {
/*
* Unlink this thread from its proc and the kseg.
* In keeping with the other structs we probably should
* have a thread_unlink() that does some of this but it
* would only be called from here (I think) so it would
* be a waste. (might be useful for proc_fini() as well.)
*/
TAILQ_REMOVE(&p->p_threads, td, td_plist);
p->p_numthreads--;
TAILQ_REMOVE(&kg->kg_threads, td, td_kglist);
kg->kg_numthreads--;
thread_unlink(td);
if (p->p_maxthrwaits)
wakeup(&p->p_numthreads);
/*
@ -1315,6 +1305,19 @@ thread_link(struct thread *td, struct ksegrp *kg)
kg->kg_numthreads++;
}
void
thread_unlink(struct thread *td)
{
struct proc *p = td->td_proc;
struct ksegrp *kg = td->td_ksegrp;
TAILQ_REMOVE(&p->p_threads, td, td_plist);
p->p_numthreads--;
TAILQ_REMOVE(&kg->kg_threads, td, td_kglist);
kg->kg_numthreads--;
/* could clear a few other things here */
}
/*
* Purge a ksegrp resource. When a ksegrp is preparing to
* exit, it calls this function.

25
sys/kern/kern_thread.c
View File

@ -1198,17 +1198,7 @@ thread_exit(void)
* all this stuff.
*/
if (p->p_numthreads > 1) {
/*
* Unlink this thread from its proc and the kseg.
* In keeping with the other structs we probably should
* have a thread_unlink() that does some of this but it
* would only be called from here (I think) so it would
* be a waste. (might be useful for proc_fini() as well.)
*/
TAILQ_REMOVE(&p->p_threads, td, td_plist);
p->p_numthreads--;
TAILQ_REMOVE(&kg->kg_threads, td, td_kglist);
kg->kg_numthreads--;
thread_unlink(td);
if (p->p_maxthrwaits)
wakeup(&p->p_numthreads);
/*
@ -1315,6 +1305,19 @@ thread_link(struct thread *td, struct ksegrp *kg)
kg->kg_numthreads++;
}
void
thread_unlink(struct thread *td)
{
struct proc *p = td->td_proc;
struct ksegrp *kg = td->td_ksegrp;
TAILQ_REMOVE(&p->p_threads, td, td_plist);
p->p_numthreads--;
TAILQ_REMOVE(&kg->kg_threads, td, td_kglist);
kg->kg_numthreads--;
/* could clear a few other things here */
}
/*
* Purge a ksegrp resource. When a ksegrp is preparing to
* exit, it calls this function.

1
sys/sys/proc.h
View File

@ -943,6 +943,7 @@ void thread_single_end(void);
void thread_stash(struct thread *td);
int thread_suspend_check(int how);
void thread_suspend_one(struct thread *td);
void thread_unlink(struct thread *td);
void thread_unsuspend(struct proc *p);
void thread_unsuspend_one(struct thread *td);
int thread_userret(struct thread *td, struct trapframe *frame);