msantos

/*
 * Excessively long hostname lookup on Mac OS X Snow Leopard 
 *
 * gcc -g -Wall -o gho gho.c
 * ./gho 69982
 *
 * Feb 15 12:42:47 ack mDNSResponder[18]:  77: ERROR: read_msg - hdr.datalen 70001 (11171) > 70000
 * Feb 15 12:42:47 ack ./gho[4852]: dnssd_clientstub write_all(4) failed -1/70028 32 Broken pipe
 * Feb 15 12:42:47 ack ./gho[4852]: dnssd_clientstub deliver_request ERROR: write_all(4, 70028 bytes) failed
 * Feb 15 12:42:47 ack ./gho[4852]: dnssd_clientstub write_all(4) failed -1/28 32 Broken pipe

msantos

%%% Crash compiling regexp on Mac OS X
%%%
%%% bin/cerl -smp -debug -smp
%%%
%%% 1> N = 612, re:compile([lists:duplicate(N, $(), lists:duplicate(N, $))]).
%%% 
%%% Program received signal EXC_BAD_ACCESS, Could not access memory.
%%% Reason: KERN_PROTECTION_FAILURE at address: 0xb01d0ffc
%%% [Switching to process 7206]
%%% 0x001c04e4 in compile_branch (optionsptr=0x0, codeptr=0x0, ptrptr=0x0, errorcodeptr=0x0, firstbyteptr=0x0, reqbyteptr=0x0, bcptr=0x0, cd=0x0\

msantos

%%% Cause epmd to use 100% CPU
%%%
%%% ulimit -n 16
%%% epmd -d -p 1234
%%%
%%% $ erl
%%% emfile:start(1234,32).
%%%
-module(emfile).
-compile(export_all).

msantos

#define DEBUG   0

#define FPIN    8   // first Pin
#define LPIN    13  // last Pin

void setup() {
    int i = 0;

    Serial.begin(9600);
    for (i = FPIN; i <= LPIN; i++)

msantos

int LDR = 2;
int val = 0;
int inb = 0;

void setup() {
    Serial.begin(9600); 
    pinMode(LDR, INPUT);
}

void loop() {

msantos

-module(health).
-behaviour(gen_server).

-export([start_link/0,
        check/0, alert/0, dump/0,
        threshold/1, poll/1, url/1
    ]).

-export([init/1, handle_call/3]).

msantos

-module(sensor).
-include("light.hrl").

-export([start/0,stop/0]).

% web interface
-export([graph/3]).

start() ->

msantos

-module(light).

-export([start/0,start/1]).

-define(TABLE, sensor).
-define(STORE, "db/sensor.db").

-define(TTY,  "/dev/ttyUSB0").
-define(LDR,  $1).
-define(INTRVL,  1000).

msantos

%% Copyright (c) 2010, Michael Santos <michael.santos@gmail.com>
%% All rights reserved.
%%
%% Redistribution and use in source and binary forms, with or without
%% modification, are permitted provided that the following conditions
%% are met:
%%
%% Redistributions of source code must retain the above copyright
%% notice, this list of conditions and the following disclaimer.
%%

msantos

%% Copyright (c) 2010, Michael Santos <michael.santos@gmail.com>
%% All rights reserved.
%%
%% Redistribution and use in source and binary forms, with or without
%% modification, are permitted provided that the following conditions
%% are met:
%%
%% Redistributions of source code must retain the above copyright
%% notice, this list of conditions and the following disclaimer.
%%