From mboxrd@z Thu Jan 1 00:00:00 1970 From: "wangwei" To: Subject: [ECOS] Fw: [ECOS] select err in ecos application Date: Sun, 08 Jul 2001 18:31:00 -0000 Message-id: <003c01c10815$ec9e0940$592da8c0@start.com.cn> X-SW-Source: 2001-07/msg00234.html 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" To: 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. >