core-admin/dom0/qmemman/qmemman_client.py

import socket
import fcntl
class QMemmanClient:

    def request_memory(self, amount):
        self.sock = socket.socket(socket.AF_UNIX)

        flags = fcntl.fcntl(self.sock.fileno(), fcntl.F_GETFD)
        flags |= fcntl.FD_CLOEXEC
        fcntl.fcntl(self.sock.fileno(), fcntl.F_SETFD, flags)

        self.sock.connect("/var/run/qubes/qmemman.sock")
        self.sock.send(str(amount)+"\n")
        self.received = self.sock.recv(1024).strip()
        if self.received == 'OK':
            return True
        else:
            return False

    def close(self):
        self.sock.close()