aphyr

Thank you for extending an invitation to speak at HighLoad++. I
sincerely appreciate your consideration.

I am an outspoken advocate for LGBTQ equality; this position is deeply
woven into my work. Clojure From The Ground Up is adamantly
LGBT-inclusive. Jepsen is named after a gay pop anthem and includes
dozens of references to same-sex relationships and trans identities. My
talk slides are populated with bearded nuns, genderqueer punks, and
trans hackers. My twitter feed is about as gay as it is possible to get.

kachayev

Channels Are Not Enough

... or Why Pipelining Is Not That Easy

Golang Concurrency Patterns for brave and smart.

By @kachayev

Intro

mboeh

# Summary: In MRI 1.9, if you keep threads in an array in a local variable, the threads may outlive the local variable.
# I have not yet been able to produce a scenario in which the threads are ever garbage-collected.
# You have to remove the thread from the array before it goes out of scope, e.g. using #pop or #clear.
# INPUT DESIRED: If anyone can demonstrate a condition in which a local array keeps threads and those threads are eventually GC'd.
# INPUT DESIRED: Is this expected behavior or a bug?
# NOTE: This test will not work as expected in JRuby, because its garbage collection works differently. Whether the same behavior exists in JRuby is an exercise for someone smarter than I am.

class Foo

  THREAD_PROC = lambda{ (0..10).to_a.map do Foo.new end }

ryanlecompte

# It appears that when I perform a query with AR via multiple threads,
# the instantiated objects do not get released when a GC is performed.

threads = Array.new(5) { Thread.new { Foo.where(:status => 2).all.first(100).each { |f| f.owner.first_name } } }
threads.each(&:join)
threads = nil

GC.start

ObjectSpace.each_object(Foo).count # => instances still exist

kristianlm

# This makefile will let the Android NDK build a
# libchipmunk.so to go with your 2D Android game.

# download the Chipmunk sources and do
# $ cd <chipmunk-physics>
# $ git checkout Chipmunk-6.0.3 # if you downloaded from source
# $ mkdir -p modules/chipmunk && cd modules/chipmunk
# $ cat >Android.mk <<EOF

LOCAL_HOME := $(dir $(lastword $(MAKEFILE_LIST)))