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Article #6394Re: Response not in que?
From: Neil P.
Date: Thu, 12 May 2005 17:29
Date: Thu, 12 May 2005 17:29
22 lines
2069 bytes
2069 bytes
Well, here goes a curve ball at you guys. If I open the port with CreateFile and I specify File_Flag_Overlapped, but my file operations are not I/O Overlapped, what could happen? Can I make the writefile operation I/O Overlapped and the readfile not? If I make the writefile non-overlapped and do a write, is there a possibility that it will hang the application? How about the read? In my example (code snippet) of the read, while inside the while loop, is the processor stuck in my while loop? or Is it doing the read, then collecting information coming in on the RS232 uart, then going back into my loop? How does that work? If I don't make my read and write functions I/O overlapped, if I am using a while loop for timing, will the processor be stuck in the loop or does it have time to go look at the information coming is at the uart? Or does that happen at the time is steps in the read function? Thank you, Neil P.
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X-Google-Thread: 10cc67,369fa724017da622 X-Google-Attributes: gid10cc67,public X-Google-Language: ENGLISH,ASCII-7-bit From: "Neil P." <nporve01@hotmail.com> Newsgroups: borland.public.cppbuilder.nativeapi References: <427fa27e@newsgroups.borland.com> <vugv711ona1kdbekucqqkg6csqkcd4agrd@4ax.com> <427fca8b$1@newsgroups.borland.com> <ukjv71lvb2s28pvi34r21cf1loa8nsqfnv@4ax.com> <427fd7cf$1@newsgroups.borland.com> <ainv71tis6a7m0pugjr1218hchvoha332j@4ax.com> <427ff5f0$1@newsgroups.borland.com> <pha081p0llphlf254k6go823dl1k37sede@4ax.com> Subject: Re: Response not in que? Date: Thu, 12 May 2005 13:29:35 -0400 Lines: 24 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1437 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 NNTP-Posting-Host: 68.209.111.59 Message-ID: <4283946a$1@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1115919466 68.209.111.59 (12 May 2005 10:37:46 -0700) Path: arc1-ca.pugleaf.net!g2news1.google.com!news4.google.com!news.glorb.com!newsfeed00.sul.t-online.de!newsfeed01.sul.t-online.de!t-online.de!newsgroups.borland.com!not-for-mail