overlapped read problem.

[Rein Klazes]

On Thu, 25 Apr 2002 13:23:01 +0200 (CEST), you wrote:

> On Thu, 25 Apr 2002, Rein Klazes wrote:
> 
> > ReadFile() returns ERROR, with gle() set to ERROR_IO_PENDING
> 
> Well the overlapped request is still pending.
> Since the data is there, this can only be caused by the
> APC not being scheduled.
> 
> Please send me a tarce with trace+comm,trace+file,trace+server.

Here is the same +comm,+file now with added +server:

| 0806cfe8:Call kernel32.ClearCommError(000000e8,405953a8,405953b0) ret=60052d0f
| 0806cfe8: get_handle_fd( handle=232, access=80000000 )
| 0806cfe8: get_handle_fd() = 0 { fd=18, type=1, flags=1 }
| trace:comm:ClearCommError handle 232 cbInQue = 8 cbOutQue = 0
| 0806cfe8: get_serial_info( handle=232 )
| 0806cfe8: get_serial_info() = 0 { readinterval=ffffffff, readconst=00000000, readmult=00000000, writeconst=00000000, writemult=00000000, eventmask=0000003d, commerror=00000000 }
| 0806cfe8: set_serial_info( handle=232, flags=4, readinterval=00000000, readconst=00000000, readmult=00000000, writeconst=0000003d, writemult=00000000, eventmask=00000000, commerror=00000000 )
| 0806cfe8: set_serial_info() = 0
| 0806cfe8:Ret  kernel32.ClearCommError() retval=00000001 ret=60052d0f
| 0806cfe8:Call kernel32.ReadFile(000000e8,405953f0,00000008,405953a4,409032e4) ret=60052d44
| trace:file:ReadFile 232 0x405953f0 8 0x405953a4 0x409032e4
| 0806cfe8: get_handle_fd( handle=232, access=80000000 )
| 0806cfe8: get_handle_fd() = 0 { fd=18, type=1, flags=1 }
| 0806cfe8: event_op( handle=236, op=2 )
| 0806cfe8: event_op() = 0
| trace:file:FILE_ReadFileEx file 232 to buf 0x405953f0 num 8 0x409032e4 func (nil)
| 0806cfe8: get_handle_fd( handle=232, access=80000000 )
| 0806cfe8: get_handle_fd() = 0 { fd=18, type=1, flags=1 }
| 0806cfe8: register_async( handle=232, type=1, overlapped=0x41d615b0, count=8, status=00000103 )
| 0806cfe8: register_async() = 0
| trace:file:GetOverlappedResult (232 0x409032e4 0x405953a4 0)
| trace:file:GetOverlappedResult waiting on 0x409032e4
| 0806cfe8: select( flags=14, cookie=0x405951bc, sec=1019746522, usec=250830, handles={236} )
| 0806cfe8: select() = TIMEOUT
| trace:file:GetOverlappedResult wait on 0x409032e4 returned 258
| 0806cfe8:Ret  kernel32.ReadFile() retval=00000000 ret=60052d44
| 0806cfe8:Call kernel32.GetLastError() ret=60052d52
| 0806cfe8:Ret  kernel32.GetLastError() retval=000003e5 ret=60052d52
| 0806cfe8:Call kernel32.lstrlenA(40595270 "Problemen bij aansturen van modem\n(121-997)") ret=6c37396c
| 0806cfe8:Ret  kernel32.lstrlenA() retval=0000002b ret=6c37396c

I put the more complete cut of the log, beginning at the "CreateFileA
COM1" at http://home.wanadoo.nl/~wijn/girotel/gt.log.bz2

Rein.
-- 
Rein Klazes
rklazes at xs4all.nl