glenux/qasim
glenux/qasim
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Single instance lock is now functional.

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This commit is contained in:
Glenn Y. Rolland 2011-09-04 05:06:23 +02:00
parent d3d12be208
commit 4df09954fa
1 changed files with 14 additions and 16 deletions
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30
bin/qasim-gui.rb
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@ -144,13 +144,13 @@ module Qasim
@context_menu = Qt::Menu.new
act_pref = Qt::Action.new _('&Preferences'), @context_menu
act_pref.setIcon( Qt::Icon::fromTheme("configure") )
act_pref.setIcon( Qt::Icon::fromTheme("configure") ) rescue nil
act_pref.setIconVisibleInMenu true
act_pref.setEnabled false
@context_menu.addAction act_pref;
act_about = Qt::Action.new '&About', @context_menu
act_about.setIcon( Qt::Icon::fromTheme("help-about") )
act_about.setIcon( Qt::Icon::fromTheme("help-about") ) rescue nil
act_about.setIconVisibleInMenu true
act_about.setEnabled false
@context_menu.addAction act_about;
@ -158,7 +158,7 @@ module Qasim
@context_menu.addSeparator
act_quit = Qt::Action.new _('Quit'), @context_menu
act_quit.setIcon( Qt::Icon::fromTheme("application-exit") )
act_quit.setIcon( Qt::Icon::fromTheme("application-exit") ) rescue nil
act_quit.setIconVisibleInMenu true
act_quit.connect(SIGNAL(:triggered)) { @app.quit }
@context_menu.addAction act_quit
@ -213,24 +213,22 @@ module Qasim
# create lock
have_lock = true
lockfname = APP_CONFIG_DIR, "lock"
File.open lockfname, "w" do
unless f.flock File::LOCK_EX | File::LOCK_NB
warn "Another instance of %s is already running." % APP_NAME
exit 1
end
f.flock File::LOCK_EX
end
fd = IO::sysopen('/tmp/tempfile',
FileUtils.mkdir_p APP_CONFIG_DIR unless File.exist? APP_CONFIG_DIR
lockfname = File.join APP_CONFIG_DIR, "lock"
fd = IO::sysopen( lockfname,
Fcntl::O_WRONLY | Fcntl::O_EXCL | Fcntl::O_CREAT)
f = IO.open(fd)
f.syswrite("TEMP DATA")
f.syswrite( "Process.pid\n" )
f.close
masterpid = fh.gets
@app.exec
rescue Errno::EEXIST => e
warn "error: Another instance of %s is already running."
exit 1
ensure
fh.close
masterpid = File.read(lockfname).strip
if masterpid == Process.pid then
FileUtils.rm lockfname
end
end