bewebste

//: Playground - noun: a place where people can play

import Cocoa

/*

I've been using an object like ObjectWrapper in Swift 2.x without any problems
to store a Swift struct as a property an Objective-C object, and then later
access and use that struct from other Swift code.

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Date/Time:       2014-10-23 21:09:32 +0000
OS Version:      Mac OS X 10.10.0 (14A389)
Report Version:  104

Exception Type:  SIGSEGV
Exception Codes: SEGV_ACCERR at 0x7fff5f3ffff8
Crashed Thread:  0

Thread 0 Crashed:
0   CoreFoundation                       0x00007fff924ac084 CFRetain + 4

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NSDateComponents* oneYear = [NSDateComponents new];
oneYear.year = 1;
dave.age = [[NSCalendar currentCalendar] dateByAddingComponents:oneYear toDate:dave.age options:0];

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BOOL BWProcessIsBeingTraced()
{
  int mib[4];
	size_t bufSize = 0;
	struct kinfo_proc kp;

	mib[0] = CTL_KERN;
	mib[1] = KERN_PROC;
	mib[2] = KERN_PROC_PID;
	mib[3] = getpid();

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tell application "System Events"
	if exists application process "Tweetbot" then
		tell application process "Tweetbot"
			if frontmost then
				set visible to false
			else
				set frontmost to true
			end if
		end tell
	end if

bewebste

This is some LLDB output from my app in a hung state somewhere deep in the image rendering frameworks. It looks like it's hung on dispatch_sync_f(), and from what I can tell from the disassembly, it looks like it's dispatching it on the current queue (see the call to dispatch_get_current_queue() just a few instructions prior), which the docs say will always hang.

(lldb) bt
* thread #1: tid = 0x2203, 0x00007fff88b4f6c2 libsystem_kernel.dylib`semaphore_wait_trap + 10, stop reason = signal SIGSTOP
    frame #0: 0x00007fff88b4f6c2 libsystem_kernel.dylib`semaphore_wait_trap + 10
    frame #1: 0x00007fff88924c6e libdispatch.dylib`_dispatch_thread_semaphore_wait + 16
    frame #2: 0x00007fff88924ace libdispatch.dylib`_dispatch_barrier_sync_f_slow + 188
    frame #3: 0x00007fff89387efb OpenCL`clFinish + 120
    frame #4: 0x00007fff8e5d5d3d CoreImage`-[FEOpenCLContext _quad:] + 3743
    frame #5: 0x00007fff8e6ce18e CoreImage`-[FEContext(Drawing) quad:kernel:] + 107

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#!/usr/bin/ruby
#Just run this script in a terminal window, leaving the window open in the
#background so it can continue to process messages.
IO.popen("syslog -F \'$(Sender): $Message\' -w -k Sender com.apple.backupd") { |syslogIO|
	while (inputString = syslogIO.gets) do
		escapedString = inputString.gsub("'", "\\'")
		`/usr/local/bin/growlnotify -a 'Time Machine' -m '#{escapedString}'`
	end
}

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- (oneway void)release
{
	int retainCount = [self retainCount];
	
	[super release];
	if(retainCount == 2)
		[resourceFiles removeObjectForKey:path];
}

bewebste

//
//  NSObject+BlockObservation.h
//  Version 1.0
//
//  Andy Matuschak
//  [email protected]
//  Public domain because I love you. Let me know how you use it.
//

/*

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//
//  NSObject+BlockObservation.h
//  Version 1.0
//
//  Andy Matuschak
//  [email protected]
//  Public domain because I love you. Let me know how you use it.
//

#import <Cocoa/Cocoa.h>