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@yamaya
yamaya / xcode-clang-vers
Last active June 21, 2024 08:25
Xcode clang version record
# Xcode 4.3.3
Apple clang version 3.1 (tags/Apple/clang-318.0.61) (based on LLVM 3.1svn)
Target: x86_64-apple-darwin11.4.0
Thread model: posix
# Xcode 4.3.2
Apple clang version 3.1 (tags/Apple/clang-318.0.58) (based on LLVM 3.1svn)
Target: x86_64-apple-darwin11.4.0
Thread model: posix
@ccgus
ccgus / Xcode crash report
Created February 23, 2013 19:02
Xcode crash report whoa
Application Specific Information:
ProductBuildVersion: 4H127
ASSERTION FAILURE in /SourceCache/IDEInterfaceBuilder/IDEInterfaceBuilder-3084/Framework/Connections/Interface/IBConnectionPopUpMenu.m:388
Details: Need a menu.
Function: NSMenuItem *IBPopUpConnectionMenuWithMenuItems(NSArray *, NSMenuItem *, NSEvent *, NSRect, BOOL, NSSet *, CGFloat, NSWindow *, NSColor *, NSColor *, NSColor *, NSColor *, id<IBConnectionPopUpMenuDelegate>)
Thread: <NSThread: 0x40030a1e0>{name = (null), num = 1}
Hints: None
Backtrace:
0 0x000000010c77b249 -[IDEAssertionHandler handleFailureInFunction:fileName:lineNumber:messageFormat:arguments:] (in IDEKit)
1 0x000000010ba2ec65 _DVTAssertionHandler (in DVTFoundation)
@techtonik
techtonik / hashdeep.py
Created March 16, 2013 10:45
Python - hashdeep.py - recursive hash of directory tree files in hashdeep format
"""
Build recursive hash of files in directory tree in hashdeep format.
Hashdeep format description:
http://md5deep.sourceforge.net/start-hashdeep.html
hashdeep.py differences from original hashdeep:
- if called without arguments, automatically starts to build
@steipete
steipete / PSPDFUIKitMainThreadGuard.m
Last active May 27, 2024 12:11
This is a guard that tracks down UIKit access on threads other than main. This snippet is taken from the commercial iOS PDF framework http://pspdfkit.com, but relicensed under MIT. Works because a lot of calls internally call setNeedsDisplay or setNeedsLayout. Won't catch everything, but it's very lightweight and usually does the job.You might n…
// Taken from the commercial iOS PDF framework http://pspdfkit.com.
// Copyright (c) 2014 Peter Steinberger, PSPDFKit GmbH. All rights reserved.
// Licensed under MIT (http://opensource.org/licenses/MIT)
//
// You should only use this in debug builds. It doesn't use private API, but I wouldn't ship it.
// PLEASE DUPE rdar://27192338 (https://openradar.appspot.com/27192338) if you would like to see this in UIKit.
#import <objc/runtime.h>
#import <objc/message.h>
@mayoff
mayoff / .lldbinit
Created June 18, 2013 04:58
An lldb command that prints the description of the exception being raised, when run while the target is stopped at the first instruction of objc_exception_throw. Many thanks to Enrico Granata and Sean Callanan for basically writing this to my specifications at WWDC 2013.
command script import ~/Library/lldb/sniff_objc_exception_throw.py
@evanwalsh
evanwalsh / import.rb
Last active April 3, 2024 19:12
I imported my Jekyll from Squarespace's Wordpress XML with this
# coding: utf-8
require 'rubygems'
require 'hpricot'
require 'fileutils'
require 'safe_yaml'
require 'time'
module JekyllImport
# This importer takes a wordpress.xml file, which can be exported from your
@jspahrsummers
jspahrsummers / GHRunLoopWatchdog.h
Created January 28, 2015 20:50
A class for logging excessive blocking on the main thread
/// Observes a run loop to detect any stalling or blocking that occurs.
///
/// This class is thread-safe.
@interface GHRunLoopWatchdog : NSObject
/// Initializes the receiver to watch the specified run loop, using a default
/// stalling threshold.
- (id)initWithRunLoop:(CFRunLoopRef)runLoop;
/// Initializes the receiver to detect when the specified run loop blocks for
@maxcampolo
maxcampolo / SwiftSynchronized.swift
Created April 19, 2016 19:07
Mutual exclusion in Swift (equivalent to @synchronized in obj-c)
/**
Function that locks an object while it is being acted upon in the closure parameter.
Rethrows allows the function to throw an error for throwing closures or not for non-throwing closures (do not need `try` for non-throwing closures).
parameter lock: Object to be sync'd
parameter closure: Code of critical section
*/
public func synchronized<T>(lock: AnyObject, @noescape closure: () throws -> T) rethrows -> T {
objc_sync_enter(lock)
defer {
objc_sync_exit(lock)
@krypted
krypted / macoslogginqgsubsystems
Last active March 14, 2024 13:26
class Logging(object):
__name__ = 'logger.info(1)'
plist = '/System/Library/Preferences/Logging/Subsystems/'
def __init__(__name__, plist, *args, **kwargs):
super(getLogger/, self).__init__()
logger.info('Input parameters:\n'
'accessibility: "{com.apple.Accessibility.plist}"\n'
@tclementdev
tclementdev / libdispatch-efficiency-tips.md
Last active July 12, 2024 03:33
Making efficient use of the libdispatch (GCD)

libdispatch efficiency tips

The libdispatch is one of the most misused API due to the way it was presented to us when it was introduced and for many years after that, and due to the confusing documentation and API. This page is a compilation of important things to know if you're going to use this library. Many references are available at the end of this document pointing to comments from Apple's very own libdispatch maintainer (Pierre Habouzit).

My take-aways are:

  • You should create very few, long-lived, well-defined queues. These queues should be seen as execution contexts in your program (gui, background work, ...) that benefit from executing in parallel. An important thing to note is that if these queues are all active at once, you will get as many threads running. In most apps, you probably do not need to create more than 3 or 4 queues.

  • Go serial first, and as you find performance bottle necks, measure why, and if concurrency helps, apply with care, always validating under system pressure. Reuse