[MacRuby-devel] Strange behaviour when using a Proc for a callback
Hi,
I was trying to setup an async callback using a proc instead of a method to
register for app launching notifications. For some reason, when I use the proc
method, I get the wrong object passed to the proc
when it gets called.
The version using a method callback:
framework 'Cocoa'
def callback notif
puts notif.class
puts notif.inspect
puts notif.userInfo.inspect
end
def launch_mail
workspace = NSWorkspace.sharedWorkspace
workspace.notificationCenter.addObserver self,
selector:'callback:',
name:NSWorkspaceDidLaunchApplicationNotification,
object:nil
workspace.launchAppWithBundleIdentifier 'com.apple.mail',
options:NSWorkspaceLaunchAsync,
additionalEventParamDescriptor:nil,
launchIdentifier:nil
end
launch_mail
NSRunLoop.currentRunLoop.runUntilDate( Time.now + 5 )
That code will work the way that I expected it to, but if I try to use a proc:
framework 'Cocoa'
callback = Proc.new { |notif|
puts notif.class
puts notif.inspect
puts notif.userInfo.inspect
}
workspace = NSWorkspace.sharedWorkspace
workspace.notificationCenter.addObserver callback,
selector:'call:',
name:NSWorkspaceDidLaunchApplicationNotification,
object:nil
workspace.launchAppWithBundleIdentifier 'com.apple.mail',
options:NSWorkspaceLaunchAsync,
additionalEventParamDescriptor:nil,
launchIdentifier:nil
NSRunLoop.currentRunLoop.runUntilDate( Time.now + 5 )
It will crash because for some reason I am not getting the notification back as
I should, instead I am getting a reference to the NSDictionary class.
I don't think this is the intended behaviour in MacRuby, but I'm not sure if
what I am trying to do is supported.
Is the ability to use a proc as a callback a supported feature? It has worked
for me in other cases.
Mark Rada
mr...@marketcircle.com
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[MacRuby-devel] "incorrect checksum for freed object" with Nokogiri (w/simple test case)
Hello, Nokogiri started working with MacRuby 0.8, which is awesome. However, I'm getting sporadic crashes: "incorrect checksum for freed object - object was probably modified after being freed." It doesn't crash every time I run the test, but if I run it 10 times, I get one or more failures. ***Self-contained script to reproduce:*** https://gist.github.com/797346. ***Example crash output:*** $ macruby nokogiri_test.rb starting Nokogiri parsed the html Run # 0: OK Run # 1: OK macruby(59860,0x100f81000) malloc: *** error for object 0x10944ce38: incorrect checksum for freed object - object was probably modified after being freed. *** set a breakpoint in malloc_error_break to debug Abort trap ***My Nokogiri info:*** $ nokogiri -v --- warnings: [] nokogiri: 1.4.4 ruby: version: 1.9.2 platform: universal-darwin10.0 engine: macruby libxml: binding: extension compiled: 2.7.3 loaded: 2.7.3 ***MacRuby Info*** $ macruby -v MacRuby 0.8 (ruby 1.9.2) [universal-darwin10.0, x86_64] I posted to the Nokogiri list ( https://github.com/tenderlove/nokogiri/issues/issue/406). The test case runs on all the other Ruby versions we've tried, so it seems Macruby-specific. Any insight appreciated! Andre ___ MacRuby-devel mailing list MacRuby-devel@lists.macosforge.org http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
Re: [MacRuby-devel] "incorrect checksum for freed object" with Nokogiri (w/simple test case)
Hi, > Nokogiri started working with MacRuby 0.8, which is awesome. However, I'm > getting sporadic crashes: "incorrect checksum for freed object - object was > probably modified after being freed." > It doesn't crash every time I run the test, but if I run it 10 times, I get > one or more failures. > **Self-contained script to reproduce:** https://gist.github.com/797346. I tried running this test on trunk at least 20 times and I didn't get any incorrect checksum error or any crash. I suspect it's a bug already fixed in trunk (maybe http://www.macruby.org/trac/changeset/5191/). If you don't want to compile MacRuby by hand you may want to try the nighly builds: http://www.macruby.org/files/nightlies/ ___ MacRuby-devel mailing list MacRuby-devel@lists.macosforge.org http://lists.macosforge.org/mailman/listinfo.cgi/macruby-devel
