alakra · October 29, 2012 20:00 · Nov 8, 2012 · Nov 3, 2012 · Nov 2, 2012 · Nov 2, 2012
diff --git a/d4962fe5e172d4a389f2fead26d4938d.jpeg b/d4962fe5e172d4a389f2fead26d4938d.jpeg
diff --git a/gistfile1.txt b/gistfile1.txt
@@ -341,6 +341,10 @@
      Can do "futures" also (much like ordering food at a restaurant
      before getting to the restaurant)
 ** Day 3
+*** The Insufficiency of Good Design
+    by Sarah Mei
+    OOP Design
+    Good communication is important
 *** mruby meets iOS and RTOS!                                        :track3:
 *** Machine Write Tests For Our Code? New Verification Techniques    :track2:
 *** How we try to answer The Great Energy Questions with Ruby        :track2:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -329,6 +329,17 @@
 *** The Celluloid Ecosystem                                          :track1:
     Why use threads? Because of multicore systems
     Cores are growing and threads are getting cheaper
+    Processes waste RAM
+    Serialization penalty
+    Used circles to do UML object messaging diagrams
+**** Applications
+     Sidekiq and Ahearsion
+**** OOP Tools and Concurrency Tools need to be combined
+     Active Objects (Based on Actor Model)
+     "Cells" name of abstraction
+     Can call methods asynchronously
+     Can do "futures" also (much like ordering food at a restaurant
+     before getting to the restaurant)
 ** Day 3
 *** mruby meets iOS and RTOS!                                        :track3:
 *** Machine Write Tests For Our Code? New Verification Techniques    :track2:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -328,6 +328,7 @@
        malloc vs gmalloc (gmalloc is more aggressive, stresses the system because it locks a page after an allocated page and uses memory up quickly)
 *** The Celluloid Ecosystem                                          :track1:
     Why use threads? Because of multicore systems
+    Cores are growing and threads are getting cheaper
 ** Day 3
 *** mruby meets iOS and RTOS!                                        :track3:
 *** Machine Write Tests For Our Code? New Verification Techniques    :track2:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -327,6 +327,7 @@
        CFLAGS-"-O0 -g" ./configure
        malloc vs gmalloc (gmalloc is more aggressive, stresses the system because it locks a page after an allocated page and uses memory up quickly)
 *** The Celluloid Ecosystem                                          :track1:
+    Why use threads? Because of multicore systems
 ** Day 3
 *** mruby meets iOS and RTOS!                                        :track3:
 *** Machine Write Tests For Our Code? New Verification Techniques    :track2:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -325,6 +325,7 @@
        Set env variables to log the stack during allocations
        Run in GDB, use malloc_history to view stacks
        CFLAGS-"-O0 -g" ./configure
+       malloc vs gmalloc (gmalloc is more aggressive, stresses the system because it locks a page after an allocated page and uses memory up quickly)
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3
 *** mruby meets iOS and RTOS!                                        :track3:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -319,6 +319,12 @@
        set pre-run breakpoints
        pass arguments to miniruby with "run"
        watch it crash
+****** Advanced Weaponry
+       MallocStackLoggingNoCompact
+       man malloc
+       Set env variables to log the stack during allocations
+       Run in GDB, use malloc_history to view stacks
+       CFLAGS-"-O0 -g" ./configure
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3
 *** mruby meets iOS and RTOS!                                        :track3:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -313,6 +313,12 @@
        lexer, parser, interpreter, VM/runtime
        core library classesx
        make miniruby to build
+****** Weapon of choice
+       GDB
+       gdb ./miniruby
+       set pre-run breakpoints
+       pass arguments to miniruby with "run"
+       watch it crash
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3
 *** mruby meets iOS and RTOS!                                        :track3:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -302,11 +302,17 @@
       Build it
 ****** Study the map
        include/ruby/ruby.h
-       ID => symbols
-       VALUE => everything else
-       rb_id2name => dump symbols in GDB
+       ID                   => symbols
+       VALUE                => everything else
+       rb_id2name           => dump symbols in GDB
        rb_string_value_cstr => #to_s for GDB
        vm_call_method
+****** Bring your gardener
+       miniruby
+       like ruby, only smaller
+       lexer, parser, interpreter, VM/runtime
+       core library classesx
+       make miniruby to build
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3
 *** mruby meets iOS and RTOS!                                        :track3:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -300,6 +300,13 @@
       Pack your Bags
       Get the source code
       Build it
+****** Study the map
+       include/ruby/ruby.h
+       ID => symbols
+       VALUE => everything else
+       rb_id2name => dump symbols in GDB
+       rb_string_value_cstr => #to_s for GDB
+       vm_call_method
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3
 *** mruby meets iOS and RTOS!                                        :track3:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -295,6 +295,11 @@
       Better: try different ruby releases
       Best: git bisect (ZOMG!)
       Bonus: try different build settings
+***** Repair
+      Try and fix it
+      Pack your Bags
+      Get the source code
+      Build it
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3
 *** mruby meets iOS and RTOS!                                        :track3:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -291,6 +291,10 @@
       Simple scripts are the best
       Shrink code (5 or fewer lines is ideal)
 ***** Regress
+      Try different versions
+      Better: try different ruby releases
+      Best: git bisect (ZOMG!)
+      Bonus: try different build settings
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3
 *** mruby meets iOS and RTOS!                                        :track3:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -286,6 +286,10 @@
       Ruby Version
       Crash log (look in Console.app in OS X, find the equivalent for your system, maybe syslog for other unix distros)
 ***** Reduce
+      Reduce the environment dependencies to narrow the scope of where the bug is
+      Eliminate libraries
+      Simple scripts are the best
+      Shrink code (5 or fewer lines is ideal)
 ***** Regress
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -284,7 +284,7 @@
       Ruby Bug Tracker - http://bugs.ruby-lang.org
       All steps to reproduce, bonus points for attachments (script that shows the bug in action)
       Ruby Version
-      Crash log (look in Console.app in OS X)
+      Crash log (look in Console.app in OS X, find the equivalent for your system, maybe syslog for other unix distros)
 ***** Reduce
 ***** Regress
 *** The Celluloid Ecosystem                                          :track1:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -282,7 +282,7 @@
       ask a friend to run the code on their codebase
 ***** Report
       Ruby Bug Tracker - http://bugs.ruby-lang.org
-      All steps to reproduce, bonus points for attachments
+      All steps to reproduce, bonus points for attachments (script that shows the bug in action)
       Ruby Version
       Crash log (look in Console.app in OS X)
 ***** Reduce

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -281,6 +281,10 @@
       rvm and rbenv
       ask a friend to run the code on their codebase
 ***** Report
+      Ruby Bug Tracker - http://bugs.ruby-lang.org
+      All steps to reproduce, bonus points for attachments
+      Ruby Version
+      Crash log (look in Console.app in OS X)
 ***** Reduce
 ***** Regress
 *** The Celluloid Ecosystem                                          :track1:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -274,10 +274,15 @@
      Also interesting: http://rdoc.info/stdlib/rinda/frames
 *** How I Set out to Benchmark an Algorithm and Ended Up Fixing Ruby :track3:
 **** 4 Rs of bug reporting
-     Reproduce
-     Report
-     Reduce
-     Regress
+***** Reproduce
+      Make the bug occur everytime (or at least more than once)
+      Ruby can be influenced by various .*rc files (.irbrc, .gemrc)
+      Environmental variables
+      rvm and rbenv
+      ask a friend to run the code on their codebase
+***** Report
+***** Reduce
+***** Regress
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3
 *** mruby meets iOS and RTOS!                                        :track3:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -271,7 +271,13 @@
      Ruby socket programming paterns from shttpserv
      DRB doesn't translate procs remotely, it will proxy back to the client
      http://segment7.net/projects/ruby/drb/DRbSSL/
+     Also interesting: http://rdoc.info/stdlib/rinda/frames
 *** How I Set out to Benchmark an Algorithm and Ended Up Fixing Ruby :track3:
+**** 4 Rs of bug reporting
+     Reproduce
+     Report
+     Reduce
+     Regress
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3
 *** mruby meets iOS and RTOS!                                        :track3:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -270,6 +270,7 @@
      Using Marshalling to save and resurrect objects
      Ruby socket programming paterns from shttpserv
      DRB doesn't translate procs remotely, it will proxy back to the client
+     http://segment7.net/projects/ruby/drb/DRbSSL/
 *** How I Set out to Benchmark an Algorithm and Ended Up Fixing Ruby :track3:
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -268,6 +268,8 @@
      Extending Ruby's method invocation to socket programming
      ObjectSpace._id2ref & send
      Using Marshalling to save and resurrect objects
+     Ruby socket programming paterns from shttpserv
+     DRB doesn't translate procs remotely, it will proxy back to the client
 *** How I Set out to Benchmark an Algorithm and Ended Up Fixing Ruby :track3:
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -267,6 +267,7 @@
      RPC -> RMI
      Extending Ruby's method invocation to socket programming
      ObjectSpace._id2ref & send
+     Using Marshalling to save and resurrect objects
 *** How I Set out to Benchmark an Algorithm and Ended Up Fixing Ruby :track3:
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -256,7 +256,7 @@
      unix
      ipc - interprocess comm
      fork/pipe, systemV IPC
-**** Embedding HTTP into processes
+**** DRB story and methodology
      embedded web servers into small apps
      was doing everyting with CGI (not cool anymore)
      http restricts how to exchange objects
@@ -266,6 +266,7 @@
      Wanted Ruby to talk to Ruby.
      RPC -> RMI
      Extending Ruby's method invocation to socket programming
+     ObjectSpace._id2ref & send
 *** How I Set out to Benchmark an Algorithm and Ended Up Fixing Ruby :track3:
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -264,6 +264,8 @@
      function api (rpc)
      Didn't want to convert Ruby world to Web world
      Wanted Ruby to talk to Ruby.
+     RPC -> RMI
+     Extending Ruby's method invocation to socket programming
 *** How I Set out to Benchmark an Algorithm and Ended Up Fixing Ruby :track3:
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -258,6 +258,12 @@
      fork/pipe, systemV IPC
 **** Embedding HTTP into processes
      embedded web servers into small apps
+     was doing everyting with CGI (not cool anymore)
+     http restricts how to exchange objects
+     server - client relationship
+     function api (rpc)
+     Didn't want to convert Ruby world to Web world
+     Wanted Ruby to talk to Ruby.
 *** How I Set out to Benchmark an Algorithm and Ended Up Fixing Ruby :track3:
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -250,6 +250,14 @@
     Pure Ruby
     In ruby standard library
     Using recorded videos to display irb coding
+**** Usage
+     distributed RSpec
+**** Design Style
+     unix
+     ipc - interprocess comm
+     fork/pipe, systemV IPC
+**** Embedding HTTP into processes
+     embedded web servers into small apps
 *** How I Set out to Benchmark an Algorithm and Ended Up Fixing Ruby :track3:
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -249,6 +249,7 @@
     Can send objects between processes
     Pure Ruby
     In ruby standard library
+    Using recorded videos to display irb coding
 *** How I Set out to Benchmark an Algorithm and Ended Up Fixing Ruby :track3:
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -243,6 +243,12 @@
       Searching
       bug #7158 - require is too slow - https://bugs.ruby-lang.org/issues/7158
 *** What we can learn from dRuby's metaprogramming magic             :track3:
+    What is dRuby? (dRB)
+    Distributed Object System
+    Can invoke methods in different processes
+    Can send objects between processes
+    Pure Ruby
+    In ruby standard library
 *** How I Set out to Benchmark an Algorithm and Ended Up Fixing Ruby :track3:
 *** The Celluloid Ecosystem                                          :track1:
 ** Day 3

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -241,7 +241,7 @@
       GC Time
       Compile Time
       Searching
-      bug #7158 - require is too slow
+      bug #7158 - require is too slow - https://bugs.ruby-lang.org/issues/7158
 *** What we can learn from dRuby's metaprogramming magic             :track3:
 *** How I Set out to Benchmark an Algorithm and Ended Up Fixing Ruby :track3:
 *** The Celluloid Ecosystem                                          :track1:

diff --git a/gistfile1.txt b/gistfile1.txt
@@ -241,6 +241,7 @@
       GC Time
       Compile Time
       Searching
+      bug #7158 - require is too slow
 *** What we can learn from dRuby's metaprogramming magic             :track3:
 *** How I Set out to Benchmark an Algorithm and Ended Up Fixing Ruby :track3:
 *** The Celluloid Ecosystem                                          :track1: