mattconnolly’s gists

mattconnolly / main.m

Created June 10, 2016 20:32

Dispatch_get_specific sees only the top queue

	#import <Foundation/Foundation.h>

	int main(int argc, const char * argv[]) {
	@autoreleasepool {
	dispatch_queue_t qa = dispatch_queue_create("a", DISPATCH_QUEUE_SERIAL);
	dispatch_queue_t qb = dispatch_queue_create("b", DISPATCH_QUEUE_SERIAL);

	static void* key = &key;

	dispatch_queue_set_specific(qa, key, (void*)1, NULL);

mattconnolly / gist:deda874b2f7259db830d

Created August 26, 2014 07:48

Connecting another ZFS pool to do a sync

	# The si3124 card doesn't seem to like drives being hot plugged, so manually deactivate the ports
	cfgadm -x sata_port_deactivate sata1/0 sata1/1 sata1/2 sata1/3
	# enable hot plug service
	svcadm enable hotplug
	# connect the drives, and:
	cfgadm -x sata_port_activate sata1/0 sata1/1 sata1/2 sata1/3
	# they should connect and configure automatically now, if not:
	cfgadm -c configure sata1/0
	cfgadm -c configure sata1/1
	cfgadm -c configure sata1/2

mattconnolly / gist:e188fdb1049872ec428d

Created May 19, 2014 12:10

setup iscsi share on smartos

	#!/bin/bash -x

	# based on: http://superuser.com/questions/386506/hosting-iscsi-on-smartos

	GROUPNAME=iscsi-1
	TARGETNAME=iqn.2010-08.org.illumos:02:$GROUPNAME
	LOCAL_ADDRESS=192.168.1.2

	svcadm enable stmf
	svcadm enable -r svc:/network/iscsi/target:default

mattconnolly / spec_helper.rb

Last active August 29, 2015 14:00

spec_helper - clear the test log before each test run.

	# near the top of spec_helper.rb

	# clear the test log file before we start.
	log_file = Rails.root.join("log/test.log")
	File.truncate(log_file, 0) if File.exist?(log_file)

mattconnolly / gist:11166138

Created April 22, 2014 05:23

passing blocks to a block - rspec fun.

	context "deep copy some record" do
	it do
	duplicate = call_the_copy_method(original)

	check_same = lambda { \|&block\| expect(block.call(duplicate)).to eq(block.call(original)) }

	check_same.call { \|x\| x.name }
	check_same.call { \|x\| x.list_of_shared_items }
	check_same.call { \|x\| x.list_of_copied_items.map { \|item\| item.name } }

mattconnolly / gist:9907062

Created April 1, 2014 03:17

A let method to memoize values that could be nil.

	module Let

	def let(name, &block)
	ivar = "@#{name}".to_sym
	if instance_variable_defined?(ivar)
	instance_variable_get(ivar)
	else
	instance_variable_set(ivar, instance_eval(&block))
	end

mattconnolly / gist:9905829

Created April 1, 2014 01:09

vmadm get for windows zone.

	{
	"zonename": "17a296aa-012c-49bb-a10a-e6d48a06093d",
	"autoboot": true,
	"brand": "kvm",
	"limit_priv": "default,-file_link_any,-net_access,-proc_fork,-proc_info,-proc_session",
	"v": 1,
	"create_timestamp": "2013-08-09T04:26:57.316Z",
	"cpu_shares": 100,
	"zfs_io_priority": 100,
	"max_lwps": 2000,

mattconnolly / nested_load_and_authorize.rb

Last active August 29, 2015 13:56

A module with code to hierarchically load and authorise resources in a before_filter.

	module NestedLoadAndAuthorize

	def load_and_authorize(name, options={})
	@_through_stack \|\|= []

	# only touch can can if the instance variable is nil
	resource = instance_variable_get("@#{name}")
	if resource.nil?
	# apply if, only and except behaviours just is if this was done by before_filter
	proceed = true

mattconnolly / best_model.rb

Created February 16, 2014 23:29 — forked from ltw/best_model.rb

mattconnolly / gist:8213718

Last active January 1, 2016 22:59

sshkit errors running rake..

	MattbookPro:sshkit matt$ ruby -v
	ruby 2.0.0p353 (2013-11-22 revision 43784) [x86_64-darwin13.0.0]
	MattbookPro:sshkit matt$ rake --version
	rake, version 10.1.1
	MattbookPro:sshkit matt$ vagrant --version
	Vagrant 1.4.2
	MattbookPro:sshkit matt$ uname -a
	Darwin MattbookPro.local 13.0.2 Darwin Kernel Version 13.0.2: Sun Sep 29 19:38:57 PDT 2013; root:xnu-2422.75.4~1/RELEASE_X86_64 x86_64
	MattbookPro:sshkit matt$ vagrant status
	WARN: Unresolved specs during Gem::Specification.reset:

	context "deep copy some record" do
	it do
	duplicate = call_the_copy_method(original)

	check_same = lambda { \|&block\| expect(block.call(duplicate)).to eq(block.call(original)) }

	check_same.call { \|x\| x.name }
	check_same.call { \|x\| x.list_of_shared_items }
	check_same.call { \|x\| x.list_of_copied_items.map { \|item\| item.name } }

Matt Connolly mattconnolly