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Don't record thread pointer, it's not permanent in process life cycle,

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use process pointer instead.
This commit is contained in:
David Xu 2003-01-10 09:54:51 +00:00
parent bcd1ede826
commit 7be6584678
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=109064
1 changed files with 6 additions and 6 deletions
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12
sys/kern/subr_bus.c
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@ -248,7 +248,7 @@ struct dev_softc
struct cv cv;
struct selinfo sel;
struct devq devq;
d_thread_t *async_td;
struct proc *async_proc;
} devsoftc;
dev_t devctl_dev;
@ -271,7 +271,7 @@ devopen(dev_t dev, int oflags, int devtype, d_thread_t *td)
/* move to init */
devsoftc.inuse = 1;
devsoftc.nonblock = 0;
devsoftc.async_td = NULL;
devsoftc.async_proc = NULL;
return (0);
}
@ -337,9 +337,9 @@ devioctl(dev_t dev, u_long cmd, caddr_t data, int fflag, d_thread_t *td)
return (0);
case FIOASYNC:
if (*(int*)data)
devsoftc.async_td = td;
devsoftc.async_proc = td->td_proc;
else
devsoftc.async_td = NULL;
devsoftc.async_proc = NULL;
return (0);
/* (un)Support for other fcntl() calls. */
@ -428,8 +428,8 @@ devaddq(const char *type, const char *what, device_t dev)
cv_broadcast(&devsoftc.cv);
mtx_unlock(&devsoftc.mtx);
selwakeup(&devsoftc.sel);
if (devsoftc.async_td)
psignal(devsoftc.async_td->td_proc, SIGIO);
if (devsoftc.async_proc)
psignal(devsoftc.async_proc, SIGIO);
return;
bad:;
free(data, M_BUS);