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Building Chromium or Berkelium in Fedora 18

by on Mar.16, 2013, under General

To get the Chromium aspect of Berkelium built this is roughly the process I used. There’s a lot of manual patching I didn’t put together patches for, but hopefully someone will find this helpful.

This was a bit ridiculous, here’s my somewhat organized notes for anyone that might be trying the same:

General setup:
 - git clone https://github.com/sirikata/berkelium
 - cd berkelium
 - git submodule update --init --recursive
 - sudo yum install subversion pkgconfig python perl ruby gcc-c++ bison \
                        flex gperf nss-devel nspr-devel gtk2-devel glib2-devel \
                        freetype-devel atk-devel pango-devel cairo-devel \
                        fontconfig-devel GConf2-devel dbus-devel alsa-lib-devel \
 - sudo yum install subversion pkgconfig python perl gcc-c++ bison \
        flex gperf nss-devel nspr-devel gtk2-devel glib2-devel freetype-devel \
        atk-devel pango-devel cairo-devel fontconfig-devel GConf2-devel \
        dbus-devel alsa-lib-devel libX11-devel expat-devel bzip2-devel \
        dbus-glib-devel elfutils-libelf-devel libjpeg-devel \
        mesa-libGLU-devel libXScrnSaver-devel \
        libgnome-keyring-devel cups-devel libXtst-devel libXt-devel pam-devel

Stuff I had to figure out:
 - sudo yum install perl-Switch perl-Digest-MD5
 - run Berkelium's util/build-chromium.sh
   - once it finishes downloading stop it. (The compile will fail, but the download should work fine.)
 - patch build/chromium/src/third_party/tcmalloc/chromium/src/base/linuxthreads.cc
    alter line 196 to "static void SignalHandler(int signum, siginfo *si, void *data) {"
      (change siginfo_t to siginfo)
 - patch build/chromium/src/ui/base/l10n/l10n_util.cc
    remove line 8 "#include <glib/gutils.h>"
 - add "#include <unistd.h>" to the following files in build/chromium/src:
    - src/base/test/test_file_util_linux.cc
    - build/chromium/net/tools/flip_server/flip_config.cc
    - net/tools/flip_server/mem_cache.cc
    - net/tools/flip_server/sm_connection.cc
  - cd build/chromium/src/third_party/WebKit && curl "https://bug-92264-attachments.webkit.org/attachment.cgi?id=154643" | patch -p1
    (make sure it all gets applied, I had to handle one chunk manually)
  - in chrome/browser/net/quoted_printable_unittest.cc
    comment out all that broken SCOPED_TRACE stuff (170, 185, 199)
  - run Berkelium's util/build-chromium.sh again
    - go get dinner while it compiles
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Using shared_from_this inside boost::serialization

by on Dec.01, 2012, under Programming

Didn’t find a solution foe this on the Internet, so I thought I’d just write this up real quick to benefit anyone that was having the same issue.

If you are using boost::serialization and shared_ptr, you may have already discovered that all you have to do is add

#include <boost/serialization/shared_ptr.hpp>

to make them work together happily.

However, if your initialization routine inside your load requires shared_from_this, you may find yourself getting

terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::bad_weak_ptr> >'
  what():  tr1::bad_weak_ptr

when trying to call methods that require shared_from_this in s11n code.

This happens because a sahred_ptr hasn’t been created for yoru unserializing class yet. To work around this, define this macro:

//Extra to make shared_from_this available inside the saving code
//This works by asking the archive to handle (and therefore create) a shared_ptr for the data
//before the main serialization code runs.
#define ALLOW_SHARED_THIS(type) \
    template<class Archive> inline void load_construct_data(Archive &ar, type *obj, const unsigned int file_version) { \
        boost::shared_ptr<type> sharedPtr; \
        ::new(obj)type();/* create instance */ \
        ar.reset(sharedPtr, obj); /* Tell the archive to start managing a shared_ptr */ \

Then use it for each class that needs the shared_from_this functionality:

namespace boost { namespace serialization {

This defines a custom constructor for your class that will create the shared_ptr for your instance before your main s11n code runs and allow your code to run peacefully.


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by on Dec.17, 2011, under Interface, Technology

I’ve been working on a protocol for communicating with many generic devices easily.  Much there is that I can say about it, but it’s still fairly early prototype. I already incorporated some work from linmctool. With it, some glue, and carefully setup systems, I have been able to write a simple thunderzipper client that functions as a basic DMX light board – controlled exclusively with a PS3 controller.

It’s still quite an early prototype – and all the settings are hardcoded – but it’s still functional and a optimistic proof-of-concept of what I can do with  this protocol.

I need to get work on my main “glue” application that routes everything thunderzipper.

In other news, I just pushed a commit that makes basic WiiMote buttons available and functional. (And without the need for a scan utility or setup.)

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by on Dec.06, 2011, under Technology

Here’s a project I’ve been working on a little: http://repo.asdfa.net/lua-convert/overview

It can take, as input, JavaScript (actually, a subset of JavaScript syntax, not real JavaScript) and turn it into Lua code.

It also does language-agnostic preprocessing.

It’s still in the earlier stages, but is quite useable as it currently stands. The whole thing can be transported as a single, cohesive jar file. You can embed the functionality into you application (perhaps your Lua-foo program wants better syntax?) using pipes and the –slave mode.


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Tasty Food

by on Aug.22, 2010, under Cooking

Hmmm, I like to cook from time-to-time. Try new things. But I never really record what I cook if it turns out well.

Lunch was delicious. Here’s how I made it. YMMV.

2 bags of chili-flavored Maruchan ramen noodles
1 onion, diced or smaller
1 jalapeno, sliced or chopped
2 small cloves garlic, pressed
soy sauce
ground peppercorn
garlic salt
buttered toast

(I tried running my onion through a garlic press, not sure if it was worth it, but it was messy and fun!)
Crush noodles, reserve flavor packets. Put 1/4″-1/2″ water, noodles, jalapenos, about a teaspoon of oil, and onions in a medium frying pan on high to medium-high heat. Keep stirred. When most the water is boiled away, add garlic, flavor packets, a few tablespoons of oil, a couple tablespoons of soy sauce, and peppercorn/garlic salt to taste. Cook until onions are finished. Serve with buttered toast.

Thoughts: Very tasty, it almost seems like its a solid sauce of tastiness on bread. Perhaps, if I had some Sriracha to go with it…

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