RE: Problems with pistachio
Jan Stoess <[email protected]> Mon, 6 Jun 2011 13:07:56 +0000
| Newsgroups | gmane.comp.micro-kernel.l4.l4ka.general |
|---|---|
| Message-ID | <[email protected]> |
--_000_0453D4730CA16449B61476A072CC48BC058BCB38i30s6osukade_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable From: [email protected] [mailto:[email protected]= uhe.de] On Behalf Of Ashford Nichols Sent: Friday, June 03, 2011 2:34 PM To: [email protected] Subject: Problems with pistachio L4_Send(from, one_sec); //here I'm assuming that 1 second is enough time As I said, please add failure checking and see what exactly fails in the IP= C. Also, L4 has a TRACEPOINT facility that allows you to enter the kernel d= ebugger at specified events (debugger menu 'r'), and a tracebuffer (debugge= r menu 'y') that records those events in a memory buffer. I'd suggest you e= ither use tracepoints to trap the L4_Send to inspect what's going on, or to= use the tracebuffer to do after-the-fact inspection. -Jan -- Dr. Jan Stoess, KIT System Architecture Group Phone: +49 (721) 6084 4056 --_000_0453D4730CA16449B61476A072CC48BC058BCB38i30s6osukade_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"> <head> <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"= > <meta name=3D"Generator" content=3D"Microsoft Word 14 (filtered medium)"> <style><!-- /* Font Definitions */ @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:Tahoma; panose-1:2 11 6 4 3 5 4 4 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:12.0pt; font-family:"Times New Roman","serif";} a:link, span.MsoHyperlink {mso-style-priority:99; color:blue; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:purple; text-decoration:underline;} p.MsoAcetate, li.MsoAcetate, div.MsoAcetate {mso-style-priority:99; mso-style-link:"Balloon Text Char"; margin:0in; margin-bottom:.0001pt; font-size:8.0pt; font-family:"Tahoma","sans-serif";} span.EmailStyle17 {mso-style-type:personal-reply; font-family:"Calibri","sans-serif"; color:#1F497D;} span.BalloonTextChar {mso-style-name:"Balloon Text Char"; mso-style-priority:99; mso-style-link:"Balloon Text"; font-family:"Tahoma","sans-serif";} .MsoChpDefault {mso-style-type:export-only; font-size:10.0pt; font-family:"Calibri","sans-serif";} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext=3D"edit"> <o:idmap v:ext=3D"edit" data=3D"1" /> </o:shapelayout></xml><![endif]--> </head> <body lang=3D"EN-US" link=3D"blue" vlink=3D"purple"> <div class=3D"WordSection1"> <p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:"= ;Tahoma","sans-serif"">From:</span></b><span style=3D"font-s= ize:10.0pt;font-family:"Tahoma","sans-serif""> l4ka-bou= [email protected] [mailto:[email protected]] <b>On Behalf Of </b>Ashford Nichols<br> <b>Sent:</b> Friday, June 03, 2011 2:34 PM<br> <b>To:</b> [email protected]<br> <b>Subject:</b> Problems with pistachio<o:p></o:p></span></p> <p class=3D"MsoNormal"><o:p> </o:p></p> <div> <div> <div> <p class=3D"MsoNormal">L4_Send(from, one_sec); //here I'm assuming that 1 s= econd is enough time<o:p></o:p></p> </div> </div> </div> <p class=3D"MsoNormal"><o:p> </o:p></p> <p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca= libri","sans-serif";color:#1F497D">As I said, please add fai= lure checking and see what exactly fails in the IPC. Also, L4 has a TRACEPO= INT facility that allows you to enter the kernel debugger at specified events (debugger menu ‘r’), and a tracebuffer (de= bugger menu ‘y’) that records those events in a memory buffer. = I’d suggest you either use tracepoints to trap the L4_Send to inspect= what’s going on, or to use the tracebuffer to do after-the-fact inspection.<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca= libri","sans-serif";color:#1F497D"><o:p> </o:p></span><= /p> <p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca= libri","sans-serif";color:#1F497D">-Jan<o:p></o:p></span></p= > <p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca= libri","sans-serif";color:#1F497D"><o:p> </o:p></span><= /p> <p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca= libri","sans-serif";color:#1F497D">--<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca= libri","sans-serif";color:#1F497D">Dr. Jan Stoess, KIT Syste= m Architecture Group<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca= libri","sans-serif";color:#1F497D">Phone: +49 (721) 6084= 4056<o:p></o:p></span></p> <p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:"Ca= libri","sans-serif";color:#1F497D"><o:p> </o:p></span><= /p> <p class=3D"MsoNormal"><o:p> </o:p></p> </div> </body> </html> --_000_0453D4730CA16449B61476A072CC48BC058BCB38i30s6osukade_--