jonathan-beard

#include <cstdlib>
#include <iostream>
#include <cstring>
#include <time.h>

int
main( int argc, char **argv )
{
   struct timespec curr_time;
   std::memset( &curr_time, 

jonathan-beard

#include <cstdlib>
#include <iostream>
#include <cstring>
#include <mach/mach.h>
#include <mach/mach_time.h>

int
main( int argc, char **argv )
{
   auto curr_time( mach_absolute_time() );

jonathan-beard

            /**
             * pin the current thread 
             */
            cpu_set_t   *cpuset( nullptr );
            size_t cpu_allocate_size( -1 );
#if   (__GLIBC_MINOR__ > 9 ) && (__GLIBC__ == 2 )
            const int8_t   processors_to_allocate( 1 );
            cpuset = CPU_ALLOC( processors_to_allocate );
            assert( cpuset != nullptr );
            cpu_allocate_size = CPU_ALLOC_SIZE( processors_to_allocate );

jonathan-beard

            std::uint64_t cycles( 0 );
            /** begin assembly section to init previous **/
#ifdef   __x86_64
            __asm__ volatile(
#if RDTSCP  
             "\
               rdtscp                           \n\
               shl      $32, %%rdx              \n\
               orq      %%rax, %%rdx            \n\
               movq     %%rdx, %[cyc]"

jonathan-beard

#!/usr/bin/env perl
use strict;
use warnings;

##
# getProcessList - returns an array of an arrays
# first index is the pid, second the executable
# it refers to
##
sub getProcessList();

jonathan-beard

#!/usr/bin/env perl
use strict;
use warnings;
##
# Stupid simple wrapper around ghostscript to join pdf's
##


##
# check for args < 2, just assume

jonathan-beard

/* vim: set shiftwidth=3 set tabstop=3 set number set ai set aw set expandtab  : */ 
/* you need to have 'set modeline' within your vimrc for the above to work */

#include <cstdint>
#include <iostream>
#include <cstdlib>

struct foo <% std::int32_t k; %>;

static std::int32_t count = 0;

jonathan-beard

#include <iostream>
#include <cstdlib>
#include <cstdlib>
#include <sys/mman.h>
#include <unistd.h>
#include <iomanip>

int
main( int argc, char **argv )
{

jonathan-beard

#include <iostream>
#include <cstdlib>
/**
 * low level programming question, exp. C/C++ programmer
 * should know: 
 * How are struct and ptr related? How is this
 * different if all the named variables in the struct
 * are homogeneous in type? How about when the struct
 * has many types?
 */

jonathan-beard

#include <iostream>
#include <iomanip>
#include <cstdlib>

/** try with -O0 then -O3 **/
struct foo
{
   /**
    * remember, this should be undetermined....
    * never leave a class var like this