FiloSottile

Dumping the iOS simulator memory

To audit memory or to debug with external tools it can be useful to get a dump of the running memory of an app.

To do so on a device you'll need a Jailbreak, SSH access, and gdb. See this or this.

If instead you're up to a simulated app, things are easier: apps running in the simulator are actually just native processes on your Mac OS X.

So, how to get a core dump of a Mac OS X process? Sadly gdb can't do so. Mac OS X Internals comes to the rescue with this article.

johanneswuerbach

---
language: objective-c
before_script:
- ./scripts/travis/add-key.sh
after_script:
- ./scripts/travis/remove-key.sh
after_success:
- ./scripts/travis/testflight.sh
env:
  global:

benvium

#!/bin/bash -e

# Ensure we're running in location of script.
cd "`dirname $0`"

for f in *; do
  if [[ $f == *@3x* ]];
    then
    echo "$f -> ${f//@3x/@2x}, ${f//@3x/}"
    convert "$f" -resize 66.66666% "${f//@3x/@2x}"

arangamani

# In Chef, when a resource is defined all its variables are evaluated during
# compile time and the execution of the resource takes place in converge phase.
# So if the value of a particular attribute is changed in converge
# (and not in compile) the resource will be executed with the old value.

# Example problem:
# Let's consider this situation where there are two steps involved in a recipe
# Step 1 is a Ruby block that changes a node attribute. Rubyblocks get executed
# in converge phase
# Step 2 is a Chef resource that makes use of the node attribute that was

syshen

  CIFilter *resizeFilter = [CIFilter filterWithName:@"CILanczosScaleTransform"];
  [resizeFilter setValue:ciImage forKey:@"inputImage"];
  [resizeFilter setValue:[NSNumber numberWithFloat:1.0f] forKey:@"inputAspectRatio"];
  [resizeFilter setValue:[NSNumber numberWithFloat:xRatio] forKey:@"inputScale"];
 
  CIFilter *cropFilter = [CIFilter filterWithName:@"CICrop"];
  CIVector *cropRect = [CIVector vectorWithX:rect.origin.x Y:rect.origin.y Z:rect.size.width W:rect.size.height];
  [cropFilter setValue:resizeFilter.outputImage forKey:@"inputImage"];
  [cropFilter setValue:cropRect forKey:@"inputRectangle"];
  CIImage *croppedImage = cropFilter.outputImage;

nikcub

In August 2007 a hacker found a way to expose the PHP source code on facebook.com. He retrieved two files and then emailed them to me, and I wrote about the issue:

http://techcrunch.com/2007/08/11/facebook-source-code-leaked/

It became a big deal:

http://www.techmeme.com/070812/p1#a070812p1

The two files are index.php (the homepage) and search.php (the search page)

brandonb927

#!/bin/sh

###
# SOME COMMANDS WILL NOT WORK ON macOS (Sierra or newer)
# For Sierra or newer, see https://github.com/mathiasbynens/dotfiles/blob/master/.macos
###

# Alot of these configs have been taken from the various places
# on the web, most from here
# https://github.com/mathiasbynens/dotfiles/blob/5b3c8418ed42d93af2e647dc9d122f25cc034871/.osx

adamawolf

i386 : iPhone Simulator
x86_64 : iPhone Simulator
arm64 : iPhone Simulator
iPhone1,1 : iPhone
iPhone1,2 : iPhone 3G
iPhone2,1 : iPhone 3GS
iPhone3,1 : iPhone 4
iPhone3,2 : iPhone 4 GSM Rev A
iPhone3,3 : iPhone 4 CDMA
iPhone4,1 : iPhone 4S

benvium

#!/bin/sh

# 2012 - Ben Clayton (benvium). Calvium Ltd
# Found at https://gist.github.com/2568707
#
# This script installs a .mobileprovision file without using Xcode. Unlike Xcode, it'll 
# work over SSH.
#
# Requires Mac OS X (I'm using 10.7 and Xcode 4.3.2)
#

erisdev

#import <objc/runtime.h>
#import <stdlib.h>

// declare some of the Objective-C runtime's private parts where we can see them
typedef struct _NXMapTable NXMapTable;
extern NXMapTable *gdb_objc_realized_classes;
extern void *NXMapInsert(NXMapTable *table, const void *key, const void *value);

@implementation NSObject (Poser)