from subprocess import Popen, PIPE
import os

###############################################################################
# Utilities to check runtime errors
###############################################################################

import resource
import fcntl

def get_open_fds():
    fds = []
    soft, hard = resource.getrlimit(resource.RLIMIT_NOFILE)
    for fd in range(0, soft):
        try:
            flags = fcntl.fcntl(fd, fcntl.F_GETFD)
        except IOError:
            continue
        fds.append(fd)
    return fds

def get_file_names_from_file_number(fds):
    names = []
    for fd in fds:
        names.append(os.readlink('/proc/self/fd/%d' % fd))
    return names

fds = get_open_fds()
systemFileNames = get_file_names_from_file_number(fds)
print(systemFileNames)

###############################################################################


for i in range(1000):
    print(i)
    cmd = "python3 bouncing_cube2.py --openmp --disable-output"
    c = cmd.split()
    p = Popen(c, stdout=PIPE, stderr=PIPE)
    stdout, stderr = p.communicate()
    p.wait()
    fileDescriptors = get_open_fds()
    fileNames = get_file_names_from_file_number(fileDescriptors)
    count = 0
    for f, fds in zip(fileNames, fileDescriptors):
        if f not in systemFileNames:
            count += 1
            print(f)
    print("Open files:", "=" * 80)
    print("Total open files:", count)
    print("Open files:", "=" * 80)