sposterkil

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import sys
from collections import deque
from pr01 import prefixParser

USAGE_MESSAGE = "pr01 [file]"
EXTENDED_MESSAGE = '''
Takes a file as an argument or on stdin, parses it as an expression tree, and

sposterkil

def get_instructions(pattern_list):
    """Takes a list of regex patterns and compiles them to a list of VM
    instructions via the lexc tool, and then returns that list."""
    # The lexing compiler should be in the same folder as us
    lexexec = os.path.abspath(os.path.join(sys.path[0], "lexc"))
    # (Yes, this giant chain of os.path things checks that)
    if not os.path.isfile(os.path.abspath(os.path.join(sys.path[0], "lexc"))):
        print lexexec
        raise IOError("Lexc executable not in same folder as program.")
    command = [lexexec] + ["--pattern=%s" % str(pattern)

sposterkil

Found the Vertex shader, loading it.
Found the Control shader, loading it.
ERROR: 0:4: Invalid use of layout 'vertices'
ERROR: 0:15: Use of undeclared identifier 'gl_InvocationID'
ERROR: 0:15: Use of undeclared identifier 'gl_InvocationID'
ERROR: 0:17: Use of undeclared identifier 'gl_InvocationID'
ERROR: 0:18: Use of undeclared identifier 'gl_TessLevelInner'
ERROR: 0:19: Use of undeclared identifier 'gl_TessLevelInner'
ERROR: 0:20: Use of undeclared identifier 'gl_TessLevelOuter'
ERROR: 0:21: Use of undeclared identifier 'gl_TessLevelOuter'

sposterkil

        with NamedTemporaryFile(suffix=".s", mode='rw+b') as asm_temp:
            asm_temp.write(get_asm(source_file))
            asm_temp.write(get_lib())
            log("> Compiling with gcc...")
            subprocess.call(["gcc",
                             "-m32",
                             "-o", output_file.name,
                             asm_temp.name
                             ])

sposterkil

        with open("a.s", "w") as asm_temp:
            asm_temp.write(get_asm(source_file))
            asm_temp.write(get_lib())
        with open("a.s", "r") as asm_temp:
            log("> Compiling with gcc...")
            subprocess.call(["gcc",
                             "-m32",
                             "-o", output_file.name,
                             asm_temp.name
                             ])

sposterkil

int fib(int n)
{
	if (n <= 2)
	{
		return 1;
	}

	else
	{
		return fib(n - 1) + fib(n - 2);

sposterkil

	char path[PATH_MAX];
	// We use this getpwuid(geteuid()) construct instead of cuserid()
	// for portability (Works on OS X and Linux)
	printf("I ran in the directory %s, as effective user %s, real user %s.\n",
		   getcwd(path, PATH_MAX),
		   getpwuid(geteuid())->pw_name,
		   getpwuid(getuid())->pw_name);

sposterkil

    int shm_id = shmget(SHM_KEY, 1024, 0777);
    my_shared = (struct common *)shmat(shm_id, 0, 0);
    if ((my_shared->bridge_dir == GOING_EAST ||
         my_shared->bridge_dir == NONE) &&
         (my_shared->xed_count < 4 &&
         (my_shared->xed_count + my_shared->xing_count) < 5)) {

sposterkil

    shm_id = shmget(SHM_KEY, 1024, 0777|IPC_CREAT);
    shared = (struct common *)shmat(shm_id, 0, 0);
    shared->xing_count = 0;
    shared->xed_count = 0;
    shared->eastbound_wait = 0;
    shared->westbound_wait = 0;
    shared->bridge_dir = NONE;

sposterkil

void eastbound_car() {
    printf("Eastbound Car (PID: %d) spawned\n", getpid());
    // Get the Semaphore set
    int sem_set_id = semget(SEM_KEY, NUM_SEMS, 0777);
    // Get the Shared Memory
    struct common *my_shared;
    int shm_id = shmget(SHM_KEY, 0, 0);
    my_shared = (struct common *)shmat(shm_id, 0, 0);
    printf("Cars crossed: %d\n", my_shared->xed_count);
    printf("Bridge Direction: %d\n", my_shared->bridge_dir);