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Add support for the pre-exisiting module shutdoen handshake.

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Fix some comments.
This commit is contained in:
Julian Elischer 2007-10-27 00:54:16 +00:00
parent 9ef95d0105
commit 6a564b46b6
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=173052
1 changed files with 6 additions and 7 deletions
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13
sys/kern/kern_kthread.c
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@ -235,7 +235,6 @@ kthread_start(udata)
* arg is the parameter to pass to function on first startup.
* newtdp is the return value pointing to the thread's struct thread.
* ** XXX fix this --> flags are flags to fork1 (in unistd.h)
* ** XXX are any used?
* fmt and following will be *printf'd into (*newtd)->td_name (for ps, etc.).
*/
int
@ -250,17 +249,15 @@ kthread_add(void (*func)(void *), void *arg, struct proc *p,
panic("kthread_add called too soon");
error = 0;
/* If no process supplied, put it on proc0 */
if (p == NULL) {
p = &proc0;
oldtd = &thread0;
} else {
if (p == &proc0)
oldtd = &thread0;
else
oldtd = FIRST_THREAD_IN_PROC(p);
oldtd = FIRST_THREAD_IN_PROC(p);
}
/* Initialize our td */
/* Initialize our new td */
newtd = thread_alloc();
if (newtd == NULL)
return (ENOMEM);
@ -320,12 +317,14 @@ kthread_add(void (*func)(void *), void *arg, struct proc *p,
void
kthread_exit(void)
{
/* a module may be waiting for us to exit */
wakeup(curthread);
/*
* We could rely on thread_exit to call exit1() but
* there is extra work that needs to be done
*/
if (curthread->td_proc->p_numthreads == 1)
kproc_exit(0);
kproc_exit(0); /* never returns */
thread_exit();
}