neomantra

-- mongol is based on the mongo C driver:
--   http://api.mongodb.org/c/current/

-- BSON types are marshalled just like luamongo:
--   http://code.google.com/p/luamongo/wiki/BsonTypes

-- new empty BSON object
b = bson.new()

-- new BSON object

neomantra

-- LuaJIT binding to libev (http://libev.schmorp.de/)
--
-- uses almost-identical API to lua-ev (https://github.com/brimworks/lua-ev)
-- Author:  Evan Wies <neomantra at gmail>
--

local ffi = require('ffi')

local bit = require("bit")
local band, bor = bit.band, bit.bor

neomantra

/*
 * res,err = db:run_command(dbname, lua_table or json_str, options)
 */
static int dbclient_run_command(lua_State *L) {
    DBClientBase *dbclient = userdata_to_dbclient(L, 1);
    const char *ns = luaL_checkstring(L, 2);
    int options = luaL_tointeger(L, 4); // if it is invalid it returns 0

    BSONObj command; // arg 3
    try {

neomantra

/*
 * str = db:get_last_error()
 */
static int dbclient_get_last_error(lua_State *L) {
    DBClientBase *dbclient = userdata_to_dbclient(L, 1);

    string result = dbclient->getLastError();
    lua_pushlstring(L, result.c_str(), result.size());
    return 1;
}

neomantra

ffi.cdef([[
struct ifaddrs {
   struct ifaddrs  *ifa_next;    /* Next item in list */
   char            *ifa_name;    /* Name of interface */
   unsigned int     ifa_flags;   /* Flags from SIOCGIFFLAGS */
   struct sockaddr *ifa_addr;    /* Address of interface */
   struct sockaddr *ifa_netmask; /* Netmask of interface */
   union {
       struct sockaddr *ifu_broadaddr;  /* Broadcast address of interface */
       struct sockaddr *ifu_dstaddr;    /* Point-to-point destination address */

neomantra

#include <cstdint>
#include <iostream>
#include <unordered_map>

struct Foo
{
  int a;
};

uint64_t some_func();

neomantra

--- returns a table of all permutations of `str`
local function permute_string( str )
    local string_byte, string_char = string.byte, string.char

    local src = {}
    for i = 1, #str do 
        src[i] = string_byte( str, i )
    end

    local perm = {}

neomantra

--[[
    nanomsg LuaJIT FFI binding

    Copyright (c) 2013 Evan Wies <evan at neomantra dot net>

    Permission is hereby granted, free of charge, to any person obtaining a copy
    of this software and associated documentation files (the "Software"),
    to deal in the Software without restriction, including without limitation
    the rights to use, copy, modify, merge, publish, distribute, sublicense,
    and/or sell copies of the Software, and to permit persons to whom

neomantra

// gcc -o echo_client -g  examples/echo_client.c -I ../nanomsg/src -L ../nanomsg/build -l nanomsg                                                                                                                                            
// LD_LIBRARY_PATH="$LD_LIBRARY_PATH:../nanomsg/build" ./echo_client foobar                                                                                                                                                                  

#include <assert.h>
#include <stdio.h>
#include <string.h>
#include "nn.h"
#include "reqrep.h"

int main( int argc, const char* argv[] )

neomantra

#!/bin/bash

usage()
{
    cat >&2 <<EOF
usage:  $0 [-h] iface [iface2 [...]]

    Scans for smp affinity for the interrupts on the passed interfaces.
    Must be run as root.