/*
    This file is part of Mtproto-proxy Library.

    Mtproto-proxy Library is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 2 of the License, or
    (at your option) any later version.

    Mtproto-proxy Library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with Mtproto-proxy Library.  If not, see <http://www.gnu.org/licenses/>.

    Copyright 2009-2013 Vkontakte Ltd
              2008-2013 Nikolai Durov
              2008-2013 Andrey Lopatin
              2011-2013 Oleg Davydov
              2012-2013 Arseny Smirnov
              2012-2013 Aliaksei Levin
              2012-2013 Anton Maydell
                   2013 Vitaliy Valtman

    Copyright 2014-2018 Telegram Messenger Inc
              2014-2018 Vitaly Valtman
*/

#pragma once

#include <getopt.h>

#ifdef __cplusplus
extern "C" {
#endif

#ifdef __LP64__
# define PTR_BITS 64
# define BITS_STR "64"
#else
# define PTR_BITS 32
# define BITS_STR "32"
#endif

#define MAX_ENGINE_OPTIONS 1000
extern int engine_options_num;
extern char *engine_options[MAX_ENGINE_OPTIONS];

int change_user (const char *username);
int change_user_group (const char *username, const char *groupname);
int raise_file_rlimit (int maxfiles);

int fast_backtrace (void **buffer, int size);

void print_backtrace (void);
void ksignal (int sig, void (*handler) (int));
void set_debug_handlers (void);

int adjust_oom_score (int oom_score_adj);

extern int allow_core_dump;
extern int quit_steps, start_time;
extern int daemonize;
extern const char *username, *progname, *groupname;

/* keep mask defines */
#define LONGOPT_JOBS_SET      0x00000400
#define LONGOPT_COMMON_SET    0x00001000
#define LONGOPT_NET_SET       (LONGOPT_TCP_SET)
#define LONGOPT_TCP_SET       0x00002000

#define LONGOPT_CUSTOM_SET    0x10000000

struct engine_parse_option {
  int *vals;
  int val_cnt;
  int base_val;
  int smallest_val;
  const char **longopts;
  int longopts_cnt;
  int (*func)(int);
  char *help;
  unsigned flags;
  int arg;
};

/* init_parse_option should be called before parse_option and parse_option_alias */
//void init_parse_options (int keep_mask, const unsigned char *keep_options_custom_list);
void init_parse_options (unsigned keep_mask, const unsigned *keep_options_custom_list);

int parse_engine_options_long (int argc, char **argv);
int parse_usage (void);
void parse_option (const char *name, int arg, int *var, int val, const char *help, ...) __attribute__ ((format (printf, 5, 6)));
void parse_option_ex (const char *name, int arg, int *var, int val, unsigned flags, int (*func)(int), const char *help, ...) __attribute__ ((format (printf, 7, 8)));

void parse_option_alias (const char *name, int val);
void parse_option_long_alias (const char *name, const char *alias_name);
void remove_parse_option (int val);
//void set_backlog (const char *arg);
//void set_maxconn (const char *arg);
long long parse_memory_limit (const char *s);

void add_builtin_parse_options (void);

typedef void (*extra_debug_handler_t)(void);
extern extra_debug_handler_t extra_debug_handler;

static inline void barrier (void) {  
  asm volatile("": : :"memory");
}

static inline void mfence (void) {
  asm volatile ("mfence": : :"memory");
}

//extern struct multicast_host multicast_hosts[];
//extern int multicast_hosts_num;

#define DEFAULT_BACKLOG 8192
#define DEFAULT_ENGINE_USER "mtproxy"

#ifdef __cplusplus
}
#endif