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Top Forums Programming Problem with external program launch Post 302289615 by Zipi on Friday 20th of February 2009 03:04:20 AM
Old 02-20-2009
Many thanks for your reply Smilie

Quote:
I'm wondering though, what priority is it being reduced from? Did it have ludicriously high priority in the first place, to halt your system like that? What user was your GUI running it as?
The main app's priority is -2 with a ROUND_RR scheduling policy,and it must be run by root user,or it won't work (i cant change this).If i remember well,it's the highest priority i can see using the "top" command,so this explains why my system halted (does it?).

Quote:
Lastly, I must wonder precisely by which mechanism this recordmydesktop process was ever started if not fork/exec
Smilie Before,i started it calling the "system" function,but after some readings i found out that it's not a suggested way to run external programs,for some problems related to the shell it's based on,so i passed to fork/exec.
 

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EXO-OPEN(1)							 Xfce Users Manual						       EXO-OPEN(1)

NAME
exo-open - Open URLs and launch preferred applications SYNOPSIS
exo-open [[url]...] exo-open --launch [category] [[parameter]...] DESCRIPTION
exo-open is a command line frontend to the Xfce Preferred Applications framework. It can either be used to open a list of urls with the default URL handler or launch the preferred application for a certain category. INVOCATION
exo-open either takes a list of URLs and tries to open each of them using the default handler, or, when using the --launch tries to launch the preferred application for a certain category, optionally passing any number of parameters to the application. Options -?, --help Print brief help and exit. -v, --version Print version information and exit. --working-directory directory When using the --launch option and this option is specified as well, the application will be run in the given directory. This is primarily useful when running the preferred TerminalEmulator from another application and you want the command in the terminal window to be run in a specific directory. --launch category parameters... Launch the preferred application for the given category with the optional parameters..., where category is either WebBrowser, MailReader, TerminalEmulator or FileManager. If you do not specify the --launch option, exo-open will open all specified URLs with their preferred URL handlers. Else, if you specify the --launch option, you can select which preferred application you want to run, and pass additional parameters to the application (i.e. for TerminalEmulator you can pass the command line that should be run in the terminal). COMPOSING EMAILS
exo-open allows users and developers to open the preferred email composer from the command line by simply invoking exo-open mailto:USER@HOST.TLD. This will open the composer window with USER@HOST.TLD as the recipient. This syntax is supported by all MailReaders. In addition the MailReaders that ship as part of libexo also support extended mailto:-URIs (but be aware that user-defined mailers do not necessarily support this), which allows you to also specify default values for the subject and the body of the mail, add additional recipients (both Cc: and To:) and attach files to emails. For example mailto:foo@foo.org?cc=bar@bar.org&subject=Foo&attach=/foo/bar.txt tells the composer to start an email to foo@foo.org and bar@bar.org with Foo in the subject and the file /foo/bar.txt attached to the message. AUTHOR
exo-open was written by Benedikt Meurer benny@xfce.org. This manual page was provided by Benedikt Meurer benny@xfce.org. Xfce 06/10/2011 EXO-OPEN(1)
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