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Sync between parent and child in iohdisystem thread so that the child has

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time to get its parmeteres before the parent throw them away
This commit is contained in:
manu 2003-09-13 07:56:54 +00:00
parent 5b8709f378
commit 11d6605f3f
1 changed files with 25 additions and 9 deletions
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34
sys/compat/darwin/darwin_iohidsystem.c
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@ -1,4 +1,4 @@
/* $NetBSD: darwin_iohidsystem.c,v 1.10 2003/09/11 23:16:19 manu Exp $ */
/* $NetBSD: darwin_iohidsystem.c,v 1.11 2003/09/13 07:56:54 manu Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: darwin_iohidsystem.c,v 1.10 2003/09/11 23:16:19 manu Exp $");
__KERNEL_RCSID(0, "$NetBSD: darwin_iohidsystem.c,v 1.11 2003/09/13 07:56:54 manu Exp $");
#include "ioconf.h"
#include "wsmux.h"
@ -86,7 +86,8 @@ static void mach_notify_iohidsystem(struct lwp *, struct mach_right *);
struct darwin_iohidsystem_thread_args {
vaddr_t dita_shmem;
struct proc **dita_p;
struct proc *dita_p;
int dita_done;
};
#if 0
@ -137,7 +138,6 @@ darwin_iohidsystem_connect_method_scalari_scalaro(args)
case DARWIN_IOHIDCREATESHMEM: {
/* Create the shared memory for HID events */
int version;
struct proc *newpp;
int error;
size_t memsize;
vaddr_t kvaddr;
@ -175,10 +175,21 @@ darwin_iohidsystem_connect_method_scalari_scalaro(args)
dita = malloc(sizeof(*dita), M_TEMP, M_WAITOK);
dita->dita_shmem = kvaddr;
dita->dita_p = &newpp;
dita->dita_done = 0;
kthread_create1(darwin_iohidsystem_thread,
(void *)dita, &newpp, "iohidsystem");
(void *)dita, &dita->dita_p, "iohidsystem");
/*
* Make sure the thread got the informations
* before exitting and destroying dita.
*/
while (!dita->dita_done)
(void)tsleep(&dita->dita_done,
PZERO, "iohid_done", 0);
free(dita, M_TEMP);
}
rep->rep_outcount = 0;
break;
@ -294,10 +305,16 @@ darwin_iohidsystem_thread(args)
printf("darwin_iohidsystem_thread: start\n");
#endif
dita = (struct darwin_iohidsystem_thread_args *)args;
shmem = (struct darwin_iohidsystem_shmem *)dita->dita_shmem;
p = *dita->dita_p;
shmem = (struct darwin_iohidsystem_shmem *)dita->dita_shmem;
p = dita->dita_p;
l = proc_representative_lwp(p);
/*
* Allow the parent to get rid of dita.
*/
dita->dita_done = 1;
wakeup(&dita->dita_done);
evg = (struct darwin_iohidsystem_evglobals *)&shmem->dis_evglobals;
/* Use the first wsmux available */
@ -351,7 +368,6 @@ darwin_iohidsystem_thread(args)
}
exit:
free(dita, M_TEMP);
kthread_exit(error);
/* NOTREACHED */
};