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author | https://me.yahoo.com/a/g3Ccalpj0NhN566pHbUl6i9QF0QEkrhlfPM-#b1c14 <diana@web> | 2015-02-16 20:08:03 +0100 |
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committer | GNU Hurd web pages engine <web-hurd@gnu.org> | 2015-02-16 20:08:03 +0100 |
commit | 95878586ec7611791f4001a4ee17abf943fae3c1 (patch) | |
tree | 847cf658ab3c3208a296202194b16a6550b243cf /open_issues/translator_stdout_stderr.mdwn | |
parent | 8063426bf7848411b0ef3626d57be8cb4826715e (diff) | |
download | web-95878586ec7611791f4001a4ee17abf943fae3c1.tar.gz web-95878586ec7611791f4001a4ee17abf943fae3c1.tar.bz2 web-95878586ec7611791f4001a4ee17abf943fae3c1.zip |
rename open_issues.mdwn to service_solahart_jakarta_selatan__082122541663.mdwn
Diffstat (limited to 'open_issues/translator_stdout_stderr.mdwn')
-rw-r--r-- | open_issues/translator_stdout_stderr.mdwn | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/open_issues/translator_stdout_stderr.mdwn b/open_issues/translator_stdout_stderr.mdwn deleted file mode 100644 index 89efd4e1..00000000 --- a/open_issues/translator_stdout_stderr.mdwn +++ /dev/null @@ -1,114 +0,0 @@ -[[!meta copyright="Copyright © 2008, 2009, 2010, 2011, 2013 Free Software -Foundation, Inc."]] - -[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable -id="license" text="Permission is granted to copy, distribute and/or modify this -document under the terms of the GNU Free Documentation License, Version 1.2 or -any later version published by the Free Software Foundation; with no Invariant -Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license -is included in the section entitled [[GNU Free Documentation -License|/fdl]]."]]"""]] - -[[!toc]] - - -# "Weird Issue" - -## IRC, freenode, #hurd, 2013-07-01 - -[[!tag open_issue_hurd]] - - <teythoon> oh, btw, there is this weird issue that I cannot figure out - <teythoon> I noticed that there is no newline printed by /hurd/init after - printing " proc" and " auth" - <teythoon> but there *is* a printf("\n"); fflush(stdout); in there - <teythoon> it's just not working - <pinotree> iirc a newline is supposed to be printed after all the essential - servers have been started - <pinotree> that one - <teythoon> yes - <teythoon> but this doesn't happen - <teythoon> for whatever reason printf("foo"); yields no output - <braunr> how are proc and auth printed ? - <teythoon> neither does printf("%s", "foo"); - <teythoon> using printf - <teythoon> but printf("%i fooo", 4); works - <youpi> uh - <braunr> ?? - <youpi> and does printf("loooooooooong line") worker? - <teythoon> no - <youpi> uh - <youpi> -er - <teythoon> and yes, the code is always fflushing stdout - <youpi> perhaps trying to put a sleep(1); to check for timing issues? - <teythoon> yes, I suspect something like that - <teythoon> b/c *sometimes* my hurd just freezes at this point - <braunr> ??? - <teythoon> after printing proc auth and not printing the newline - <braunr> such horror stories . - <braunr> .. - <teythoon> and I *think* that putting more printfs there for testing - purposes makes this worse, but I'm not sure about this - <braunr> in case you need to debug using printf, there is the mach_print - system call - <braunr> (in -dbg kernels) - -[[microkernel/mach/gnumach/interface/syscall/mach_print]]. - - <teythoon> what's wrong with using printf? - <braunr> you need to write the little assembly call yourself, where you - intend to use it, because it's not exported by glibc - <braunr> printf is an RPC - <braunr> teythoon: RPCs are complicated stuff - <braunr> in particular in core glibc parts like signal handling - <youpi> and printf goes through the console translator - <braunr> also, if you don't yet have a console server available, it comes - in handy - <youpi> better direct output directly to the kernel - - -# `stderr` buffered - -## IRC, freenode, #hurd, 2011-11-06 - -[[!tag open_issue_hurd]] - - <youpi> about CLI_DEBUG, you can use #define CLI_DEBUG(fmt, ...) { - fprintf(stderr, fmt, ## __VA_ARGS__); fflush(stderr); } - <tschwinge> Isn't stderr in auto-flush mode by default? - <tschwinge> man setbuf: The standard error stream stderr is always - unbuffered by default. - <youpi> tschwinge: "by default" is the important thing here - <youpi> in the case of translators iirc stderr is buffered - <tschwinge> youpi: Oh! - <tschwinge> That sounds wrong. - - -# Logging - -[[!tag open_issue_hurd]] - -There have been several discussions and proposals already, about adding a -suitable logging mechanism to translators, for example. - -Decide / implement / fix that (all?) running (passive?) translators' output -should show up on the (Mach / Hurd) console / syslog. - -[[!taglink open_issue_documentation]]: [[!message-id -"87oepj1wql.fsf@becket.becket.net"]] - -[[!taglink open_issue_documentation]]: Neal once had written an email on this -topic. - - -## IRC, freenode, #hurd, 2011-11-23 - - <braunr> we'd need a special logging task for hurd servers - <pinotree> if syslog would work, that could be used optionally - <braunr> no, it relies on services provided by the hurd - <braunr> i'm thinking of something using merely the mach interface - <braunr> e.g. using mach_msg to send log messages to a special port used to - reference the logging service - <braunr> which would then store the messages in a circular buffer in ram - <braunr> maybe sending to syslog if the service is available - <braunr> the hurd system buffer if you want |