* [ECOS] Fw: [ECOS] select err in ecos application
@ 2001-07-08 18:31 wangwei
2001-07-09 15:12 ` Jonathan Larmour
0 siblings, 1 reply; 2+ messages in thread
From: wangwei @ 2001-07-08 18:31 UTC (permalink / raw)
To: ecos-discuss
and I had notice the changelog of kernel in cvs:
* src/common/thread.cxx (Cyg_Thread::Cyg_Thread): Initialize
wakeup_count
Does this change has some relative with this problem?
Best regard
wangwei
----- Original Message -----
From: "wangwei" <wangw@start.com.cn>
To: <ecos-discuss@sources.redhat.com>
Sent: Sunday, July 08, 2001 4:55 PM
Subject: [ECOS] select err in ecos application
> Hi all:
>
> I'm making a application in ecos , which will drive 8 serial ports and
> tcp/ip.
> I use function "select" in my program .To improve speed , I use ISR of
> serial port
> to receive data , not DSR. So the functon "cyg_selwakeup" is called in ISR
.
>
> It runs normally at begining . A while later, the thread of application
is
> blocked,
> maybe in select function and the program cann't get any data of serial
port
> from then on.
>
> At that time ,the ISR of serial port is still working perfectly.
> In gdb , I use another thread to break in, and use command "info thread"
to
> look at the state of all thread , the thread of serial application is
ready
> .But it doesn't work really.
>
> By the way , I had use the function "cyg_drv_isr_lock" instead of
> "cyg_drv_dsr_lock" in function "serial_read".
>
> Who can give me some advice .
> Thanks.
>
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [ECOS] Fw: [ECOS] select err in ecos application
2001-07-08 18:31 [ECOS] Fw: [ECOS] select err in ecos application wangwei
@ 2001-07-09 15:12 ` Jonathan Larmour
0 siblings, 0 replies; 2+ messages in thread
From: Jonathan Larmour @ 2001-07-09 15:12 UTC (permalink / raw)
To: wangwei; +Cc: ecos-discuss
wangwei wrote:
>
> and I had notice the changelog of kernel in cvs:
>
> * src/common/thread.cxx (Cyg_Thread::Cyg_Thread): Initialize
> wakeup_count
>
> Does this change has some relative with this problem?
Nope.
Jifl
--
Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine
Come to the Red Hat TechWorld open source conference in Brussels!
Keynotes, techie talks and exhibitions http://www.redhat-techworld.com/
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2001-07-09 15:12 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2001-07-08 18:31 [ECOS] Fw: [ECOS] select err in ecos application wangwei
2001-07-09 15:12 ` Jonathan Larmour
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).