service.cpp

// This file is a part of the IncludeOS unikernel - www.includeos.org
//
// Copyright 2015 Oslo and Akershus University College of Applied Sciences
// and Alfred Bratterud
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include <service>
#include <cstdio>
#include <sys/time.h>
#include <ctime>

static void print_time()
{
 /* Obtain the time of day, and convert it to a tm struct. */
 struct timeval tv;
 gettimeofday (&tv, NULL);
 struct tm* ptm = localtime(&tv.tv_sec);
 /* Format the date and time, down to a single second. */
 char time_string[40];
 strftime (time_string, sizeof (time_string), "%Y-%m-%d %H:%M:%S", ptm);
 /* Compute milliseconds from microseconds. */
 long milliseconds = tv.tv_usec / 1000;
 /* Print the formatted time, in seconds, followed by a decimal point
   and the milliseconds. */
 printf ("%s.%03ld\n", time_string, milliseconds);
}

void Service::start(const std::string& args)
{
  printf("Hello world! Time is now "); print_time();
  printf("Args = %s\n", args.c_str());
  printf("Try giving the service less memory, eg. 5MB in vm.json\n");
}