server/include/cfperl.h

/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 * 
 * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
 * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
 * Copyright (©) 1992,2007 Frank Tore Johansen
 * 
 * Deliantra is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 * 
 * The authors can be reached via e-mail to <support@deliantra.net>
 */

//
// cfperl.h perl interface
//
#ifndef CFPERL_H__
#define CFPERL_H__

#include <cstdarg>
#include <cstdio>
#include <bitset>

using namespace std;

#include <EXTERN.h>
#include <perl.h>
#include <XSUB.h>

#include <EVAPI.h>
#include <CoroAPI.h>

#include "util.h"
#include "keyword.h"
#include "dynbuf.h"
#include "callback.h"

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

// optimisations/workaround for functions requiring my_perl in scope (anti-bloat)
#undef localtime
#undef srand48
#undef drand48
#undef srandom
#undef readdir
#undef getprotobyname
#undef gethostbyname
#undef ctime
#undef strerror
#undef _

// same here, massive symbol spamming
#undef do_open
#undef do_close
#undef ref
#undef seed

// perl bug #40256: perl does overwrite those with reentrant versions
// but does not initialise their state structures.
#undef random
#undef crypt

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

#define _(msg)  (msg)
#define N_(msg) (msg)

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

// some macros to simplify perl in-calls

#define CHECK_ERROR                     \
  if (SvTRUE (ERRSV))                   \
    LOG (llevError, "runtime error in %s: %s\n", __func__, SvPVutf8_nolen (ERRSV));

#define CALL_BEGIN(args) dSP; ENTER; SAVETMPS; PUSHMARK (SP); EXTEND (SP, args)
#define CALL_ARG_SV(sv) PUSHs (sv_2mortal (sv)) // separate because no refcount inc
#define CALL_ARG(expr) PUSHs (sv_2mortal (to_sv (expr)))
#define CALL_CALL(name, flags) PUTBACK; int count = call_pv (name, (flags) | G_EVAL); SPAGAIN;
#define CALL_END CHECK_ERROR; FREETMPS; LEAVE

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

void cfperl_init ();
void cfperl_main ();
void cfperl_tick ();
void cfperl_emergency_save ();
void cfperl_cleanup (int make_core);
void cfperl_make_book (object *book, int level);
void cfperl_send_msg (client *ns, int color, const char *type, const char *msg);
int cfperl_can_merge (object *ob1, object *ob2);

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

extern tstamp runtime; // virtual server time, excluding time jumps and lag
extern tstamp NOW;     // real time of current server tick

enum event_klass
{
  KLASS_NONE,
  KLASS_GLOBAL,
  KLASS_ATTACHABLE,
  KLASS_CLIENT,
  KLASS_PLAYER,
  KLASS_OBJECT,
  KLASS_MAP,
  KLASS_COMMAND,
};

enum event_type
{
# define def(klass,name) EVENT_ ## klass ## _ ## name,
#  include "eventinc.h"
# undef def
  NUM_EVENT_TYPES
};

// in which global events or per-type events are we interested
extern bitset<NUM_EVENT_TYPES> ev_want_event;
extern bitset<NUM_TYPES>       ev_want_type;

#define ARG_AV(o)         DT_AV    , static_cast<AV *>   (o)
#define ARG_INT(v)        DT_INT   , static_cast<int>    (v)
#define ARG_INT64(v)      DT_INT64 , static_cast<sint64> (v)
#define ARG_DOUBLE(v)     DT_DOUBLE, static_cast<double> (v)
#define ARG_STRING(v)     DT_STRING, static_cast<const char *> (v)
#define ARG_DATA(s,l)     DT_DATA  , static_cast<const void *> (s), int (l)
#define ARG_OBJECT(o)     DT_OBJECT, (void *)(static_cast<object *>    (o))
#define ARG_MAP(o)        DT_MAP   , (void *)(static_cast<maptile *>   (o))
#define ARG_PLAYER(o)     DT_PLAYER, (void *)(static_cast<player *>    (o))
#define ARG_ARCH(o)       DT_ARCH  , (void *)(static_cast<archetype *> (o))
#define ARG_CLIENT(o)     DT_CLIENT, (void *)(static_cast<client *>    (o))
#define ARG_PARTY(o)      DT_PARTY , (void *)(static_cast<party *>     (o))
#define ARG_REGION(o)     DT_REGION, (void *)(static_cast<region *>    (o))

// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension
#define INVOKE(obj,event, ...) (expect_false ((obj)->should_invoke (event)) ? (obj)->invoke (event, ## __VA_ARGS__, DT_END) : 0)
#define INVOKE_GLOBAL(event, ...)          INVOKE (&gbl_ev, EVENT_ ## GLOBAL     ## _ ## event, ## __VA_ARGS__)
#define INVOKE_ATTACHABLE(event, obj, ...) INVOKE (obj    , EVENT_ ## ATTACHABLE ## _ ## event, ## __VA_ARGS__)
#define INVOKE_OBJECT(event, obj, ...)     INVOKE (obj    , EVENT_ ## OBJECT     ## _ ## event, ## __VA_ARGS__)
#define INVOKE_CLIENT(event, obj, ...)     INVOKE (obj    , EVENT_ ## CLIENT     ## _ ## event, ## __VA_ARGS__)
#define INVOKE_PLAYER(event, obj, ...)     INVOKE (obj    , EVENT_ ## PLAYER     ## _ ## event, ## __VA_ARGS__)
#define INVOKE_MAP(event, obj, ...)        INVOKE (obj    , EVENT_ ## MAP        ## _ ## event, ## __VA_ARGS__)

//TODO should index into @result
#define RESULT(idx,type) cfperl_result_ ## type (idx)
#define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE)
#define RESULT_INT(idx)    RESULT(idx, INT)

double cfperl_result_DOUBLE (int idx);
int cfperl_result_INT (int idx);

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

INTERFACE_CLASS (attachable)
struct attachable : refcnt_base
{
  static MGVTBL vtbl;

  static unordered_vector<attachable *> mortals;
  MTH static void check_mortals ();

  enum {
    F_DESTROYED   = 0x01,
    F_DEBUG_TRACE = 0x02,
  };
  int ACC (RW, flags);

  // object is delete'd after the refcount reaches 0
  MTH int refcnt_cnt () const;
  // check wether the object has died and destroy
  MTH void refcnt_chk () { if (expect_false (refcnt <= 0)) do_check (); }

  // destroy the object unless it was already destroyed
  // this politely asks everybody interested the reduce
  // the refcount to 0 as soon as possible.
  MTH void destroy ();

  // return wether an object was destroyed already
  MTH bool destroyed () const { return flags & F_DESTROYED; }

  virtual void gather_callbacks (AV *&callbacks, event_type event) const;

#if 0
private:
  static refcounted *rc_first;
  refcounted *rc_next;
#endif

  HV *self;     // CF+ perl self
  AV *cb;       // CF+ callbacks
  shstr attach; // generic extension attachment information

  void sever_self (); // sever this object from its self, if it has one.
  void optimise ();   // possibly save some memory by destroying unneeded data

  attachable ()
  : flags (0), self (0), cb (0), attach (0)
  {
  }

  attachable (const attachable &src)
  : flags (0), self (0), cb (0), attach (src.attach)
  {
  }

  // set a custom key to the given value, or delete it if value = 0
  void set_key (const char *key, const char *value = 0, bool is_utf8 = 0);

  void set_key_text (const char *key, const char *value = 0)
  {
    set_key (key, value, 1);
  }

  void set_key_data (const char *key, const char *value = 0)
  {
    set_key (key, value, 0);
  }

  attachable &operator =(const attachable &src);

  // used to _quickly_ device wether to shortcut the evaluation
  bool should_invoke (event_type event)
  {
    return ev_want_event [event] || cb;
  }

  bool invoke (event_type event, ...);

  MTH void instantiate ();
  void reattach ();

protected:
  // do the real refcount checking work
  void do_check ();

  // the method that does the real destroy work
  virtual void do_destroy ();

  // destructor is protected, should not be called by anybody
  virtual ~attachable ();
};

// the global object is a pseudo object that cares for the global events
struct global : attachable
{
  void gather_callbacks (AV *&callbacks, event_type event) const;
};

extern struct global gbl_ev;

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

INTERFACE_CLASS(object_freezer)
struct object_freezer : dynbuf_text
{
  AV *av;

  object_freezer ();
  ~object_freezer ();

  void put (attachable *ext);

  // used only for user-defined key-value pairs
  void put (const shstr &k, const shstr &v)
  {
    add (k);

    if (expect_true (v))
      add (' '), add (v);

    add ('\n');
  }

  template<typename T>
  void put_kw_string (keyword k, const T &v)
  {
    int klen = keyword_len [k];
    int vlen = v ? strlen (v) + 1 : 0;

    char *p = (char *)alloc (klen + vlen + 1);

    memcpy (p, keyword_str [k], klen); p += klen;

    if (expect_true (v))
      {
        *p++ = ' ';  vlen--;
        memcpy (p, v, vlen); p += vlen;
      }

    *p = '\n';
  }

  void put (keyword k, const char *v = 0)
  {
    put_kw_string (k, v);
  }

  void put (keyword k, const shstr &v)
  {
    put_kw_string (k, v);
  }

  void put (keyword k, double v)
  {
    force (MAX_KEYWORD_LEN + 2 + 32);
    fadd (keyword_str [k], keyword_len [k]);
    fadd (' ');
    falloc (sprintf (ptr, "%.7g", v));
    fadd ('\n');
  }

  void put_(keyword k, sint64 v)
  {
    force (MAX_KEYWORD_LEN + 2 + sint64_digits);
    fadd (keyword_str [k], keyword_len [k]);
    fadd (' ');
    add (v);
    fadd ('\n');
  }

  void put_(keyword k, sint32 v)
  {
    force (MAX_KEYWORD_LEN + 2 + sint32_digits);
    fadd (keyword_str [k], keyword_len [k]);
    fadd (' ');
    add (v);
    fadd ('\n');
  }

  void put (keyword k,          float     v) { put (k, (double)v); }
  void put (keyword k,   signed char      v) { put_(k, (sint32)v); }
  void put (keyword k, unsigned char      v) { put_(k, (sint32)v); }
  void put (keyword k,   signed short     v) { put_(k, (sint32)v); }
  void put (keyword k, unsigned short     v) { put_(k, (sint32)v); }
  void put (keyword k,   signed int       v) { put_(k, (sint32)v); }
  void put (keyword k, unsigned int       v) { put_(k, (sint64)v); }
  void put (keyword k,   signed long      v) { put_(k, (sint64)v); }
  void put (keyword k, unsigned long      v) { put_(k, (sint64)v); }
  void put (keyword k,   signed long long v) { put_(k, (sint64)v); }
  void put (keyword k, unsigned long long v) { put_(k, (sint64)v); }

  void put (keyword kbeg, keyword kend, const shstr &v)
  {
    force (MAX_KEYWORD_LEN + 1);
    fadd (keyword_str [kbeg], keyword_len [kbeg]); fadd ('\n');

    if (expect_true (v))
      {
        add (v);
        add ('\n');
      }

    force (MAX_KEYWORD_LEN + 1);
    fadd (keyword_str [kend], keyword_len [kend]); fadd ('\n');
  }

  void put (keyword k, archetype *v);
  void put (keyword k, treasurelist *v);
  void put (keyword k, faceinfo *v);

  template<typename T>
  void put (keyword k, const refptr<T> &v)
  {
    put (k, (T *)v);
  }

  MTH bool save (const_octet_string path);
  char *as_string (); // like strdup

  operator bool () { return !!av; }
};

INTERFACE_CLASS(object_thawer)
struct object_thawer
{
  char *line; // current beginning of line
  SV *text; // text part
  AV *av;   // perl part
  int linenum;
  keyword kw;
  char *kw_str; // the keyword parsed, as string
  char *value;  // the value, or 0 if no value
  const char *value_nn; // the value, or the empty string if no value
  const char *name;

  operator bool () const { return !!text; }

  object_thawer (const char *path = 0);
  object_thawer (const char *data, AV *perlav);
  ~object_thawer ();

  void get (attachable *obj, int oid);

  // parse next line
  MTH void next ();
  // skip the current key-value (usually fetch next line, for
  // multiline-fields, skips till the corresponding end-kw
  MTH void skip ();
  MTH void skip_block (); // skips till and over KW_end

  char *get_str () { return value; } // may be 0
  void get_ml (keyword kend, shstr &sh);

  void get_ornull (shstr &sh) const { sh = value; }
  void get (shstr &sh)        const { sh = value; } // might want to check for non-null here

  bool   get_bool   () const { return *value_nn == '1'; }
  sint32 get_sint32 () const;
  sint64 get_sint64 () const { return strtoll (value_nn, 0, 10); }
  double get_double () const { return strtod  (value_nn, 0); }

  void get (float  &v) { v = get_double (); }
  void get (double &v) { v = get_double (); }

  void get (bool   &i) { i = get_bool   (); }
  void get (sint8  &i) { i = get_sint32 (); }
  void get (uint8  &i) { i = get_sint32 (); }
  void get (sint16 &i) { i = get_sint32 (); }
  void get (uint16 &i) { i = get_sint32 (); }
  void get (sint32 &i) { i = get_sint32 (); }

  void get (uint32 &i) { i = get_sint64 (); }
  void get (sint64 &i) { i = get_sint64 (); }

  MTH void parse_warn (const char *msg);
  MTH bool parse_error (const char *type = 0, const char *name = 0, bool skip = true);

  struct delayed_ref {
    attachable *op;
    object_ptr *ptr;
    const char *ref;
  };
  std::vector<delayed_ref> delrefs;

  void delayed_deref (attachable *op, object_ptr &ptr, const char *ref);
  MTH void resolve_delayed_derefs (bool deref = true);
};

//TODO: remove
char *fgets (char *s, int n, object_thawer &thawer);

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

struct coroapi {
  static struct CoroAPI *GCoroAPI;

  static EV_ATOMIC_T cede_pending;

  static int nready () {                   return CORO_NREADY; }
  static int cede   () { cede_pending = 0; return CORO_CEDE  ; }

  static void do_cede_to_tick ();

  // actually cede's far more often
  static bool cede_to_tick ()
  {
    if (expect_true (!cede_pending))
      return false;

    do_cede_to_tick ();
    return true;
  }

  static void wait_for_tick ();
  static void wait_for_tick_begin ();
};

struct evapi
{
  static struct EVAPI *GEVAPI;
};

struct iow : ev_io, evapi, callback<void (iow &, int)>
{
  static void thunk (EV_P_ struct ev_io *w_, int revents)
  {
    iow &w = *static_cast<iow *>(w_);
    
    w (w, revents);
  }

  template<class O, class M>
  iow (O object, M method)
  : callback<void (iow &, int)> (object, method)
  {
    ev_init ((ev_io *)this, thunk);
  }

  void prio (int prio)
  {
    ev_set_priority ((ev_io *)this, prio);
  }

  void set (int fd, int events)
  {
    ev_io_set ((ev_io *)this, fd, events);
  }

  int poll () const { return events; }

  void poll (int events);

  void start ()
  {
    ev_io_start (EV_DEFAULT, (ev_io *)this);
  }

  void stop ()
  {
    ev_io_stop (EV_DEFAULT, (ev_io *)this);
  }

  ~iow ()
  {
    stop ();
  }
};

struct asyncw : ev_async, evapi, callback<void (ev_async &, int)>
{
  static void thunk (EV_P_ struct ev_async *w_, int revents)
  {
    asyncw &w = *static_cast<asyncw *>(w_);
    
    w (w, revents);
  }

  template<class O, class M>
  asyncw (O object, M method)
  : callback<void (asyncw &, int)> (object, method)
  {
    ev_init ((ev_async *)this, thunk);
  }

  void start ()
  {
    ev_async_start (EV_DEFAULT, (ev_async *)this);
  }

  void stop ()
  {
    ev_async_stop (EV_DEFAULT, (ev_async *)this);
  }

  ~asyncw ()
  {
    stop ();
  }
};

#endif

Revision:	1.94
Committed:	Wed Apr 2 11:13:54 2008 UTC (16 years, 2 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-2_43
Changes since 1.93:	+44 -22 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.74	/*
2	root	1.90	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	root	1.74	*
4	root	1.94	* Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5	root	1.74	* Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
6			* Copyright (©) 1992,2007 Frank Tore Johansen
7			*
8	root	1.90	* Deliantra is free software: you can redistribute it and/or modify
9	root	1.81	* it under the terms of the GNU General Public License as published by
10			* the Free Software Foundation, either version 3 of the License, or
11			* (at your option) any later version.
12	root	1.74	*
13	root	1.81	* This program is distributed in the hope that it will be useful,
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16			* GNU General Public License for more details.
17	root	1.74	*
18	root	1.81	* You should have received a copy of the GNU General Public License
19			* along with this program. If not, see <http://www.gnu.org/licenses/>.
20	root	1.74	*
21	root	1.90	* The authors can be reached via e-mail to <support@deliantra.net>
22	root	1.74	*/
23
24	root	1.1	//
25			// cfperl.h perl interface
26			//
27	root	1.2	#ifndef CFPERL_H__
28			#define CFPERL_H__
29
30	root	1.64	#include <cstdarg>
31	root	1.16	#include <cstdio>
32	root	1.64	#include <bitset>
33	root	1.16
34			using namespace std;
35
36			#include <EXTERN.h>
37			#include <perl.h>
38	root	1.20	#include <XSUB.h>
39	root	1.16
40	root	1.91	#include <EVAPI.h>
41	root	1.42	#include <CoroAPI.h>
42	root	1.36
43	root	1.42	#include "util.h"
44			#include "keyword.h"
45			#include "dynbuf.h"
46	root	1.36	#include "callback.h"
47
48	root	1.42	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
49
50	root	1.16	// optimisations/workaround for functions requiring my_perl in scope (anti-bloat)
51			#undef localtime
52			#undef srand48
53			#undef drand48
54			#undef srandom
55			#undef readdir
56			#undef getprotobyname
57			#undef gethostbyname
58			#undef ctime
59			#undef strerror
60	root	1.87	#undef _
61	root	1.16
62	root	1.39	// same here, massive symbol spamming
63			#undef do_open
64			#undef do_close
65	root	1.42	#undef ref
66	root	1.44	#undef seed
67	root	1.39
68	root	1.16	// perl bug #40256: perl does overwrite those with reentrant versions
69			// but does not initialise their state structures.
70			#undef random
71			#undef crypt
72
73	root	1.42	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
74
75	root	1.87	#define _(msg) (msg)
76			#define N_(msg) (msg)
77
78			//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
79
80	root	1.42	// some macros to simplify perl in-calls
81
82			#define CHECK_ERROR \
83			if (SvTRUE (ERRSV)) \
84			LOG (llevError, "runtime error in %s: %s\n", __func__, SvPVutf8_nolen (ERRSV));
85
86			#define CALL_BEGIN(args) dSP; ENTER; SAVETMPS; PUSHMARK (SP); EXTEND (SP, args)
87			#define CALL_ARG_SV(sv) PUSHs (sv_2mortal (sv)) // separate because no refcount inc
88			#define CALL_ARG(expr) PUSHs (sv_2mortal (to_sv (expr)))
89			#define CALL_CALL(name, flags) PUTBACK; int count = call_pv (name, (flags) \| G_EVAL); SPAGAIN;
90			#define CALL_END CHECK_ERROR; FREETMPS; LEAVE
91
92			//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
93
94	root	1.7	void cfperl_init ();
95			void cfperl_main ();
96	root	1.94	void cfperl_tick ();
97	root	1.50	void cfperl_emergency_save ();
98	root	1.55	void cfperl_cleanup (int make_core);
99	root	1.65	void cfperl_make_book (object *book, int level);
100	root	1.80	void cfperl_send_msg (client ns, int color, const char type, const char *msg);
101	root	1.84	int cfperl_can_merge (object ob1, object ob2);
102	root	1.7
103	root	1.42	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
104
105	root	1.79	extern tstamp runtime; // virtual server time, excluding time jumps and lag
106			extern tstamp NOW; // real time of current server tick
107	root	1.42
108	root	1.6	enum event_klass
109			{
110	root	1.11	KLASS_NONE,
111	root	1.3	KLASS_GLOBAL,
112	root	1.41	KLASS_ATTACHABLE,
113	root	1.40	KLASS_CLIENT,
114	root	1.3	KLASS_PLAYER,
115			KLASS_OBJECT,
116			KLASS_MAP,
117	root	1.33	KLASS_COMMAND,
118	root	1.3	};
119
120	root	1.6	enum event_type
121			{
122	root	1.7	# define def(klass,name) EVENT_ ## klass ## _ ## name,
123	root	1.2	# include "eventinc.h"
124			# undef def
125	root	1.4	NUM_EVENT_TYPES
126	root	1.2	};
127
128	root	1.64	// in which global events or per-type events are we interested
129			extern bitset<NUM_EVENT_TYPES> ev_want_event;
130			extern bitset<NUM_TYPES> ev_want_type;
131
132	root	1.41	#define ARG_AV(o) DT_AV , static_cast<AV *> (o)
133			#define ARG_INT(v) DT_INT , static_cast<int> (v)
134			#define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v)
135			#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v)
136			#define ARG_STRING(v) DT_STRING, static_cast<const char *> (v)
137			#define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), int (l)
138			#define ARG_OBJECT(o) DT_OBJECT, (void )(static_cast<object > (o))
139			#define ARG_MAP(o) DT_MAP , (void )(static_cast<maptile > (o))
140			#define ARG_PLAYER(o) DT_PLAYER, (void )(static_cast<player > (o))
141			#define ARG_ARCH(o) DT_ARCH , (void )(static_cast<archetype > (o))
142			#define ARG_CLIENT(o) DT_CLIENT, (void )(static_cast<client > (o))
143			#define ARG_PARTY(o) DT_PARTY , (void )(static_cast<party > (o))
144			#define ARG_REGION(o) DT_REGION, (void )(static_cast<region > (o))
145	root	1.3
146			// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension
147	root	1.66	#define INVOKE(obj,event, ...) (expect_false ((obj)->should_invoke (event)) ? (obj)->invoke (event, ## __VA_ARGS__, DT_END) : 0)
148			#define INVOKE_GLOBAL(event, ...) INVOKE (&gbl_ev, EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__)
149			#define INVOKE_ATTACHABLE(event, obj, ...) INVOKE (obj , EVENT_ ## ATTACHABLE ## _ ## event, ## __VA_ARGS__)
150			#define INVOKE_OBJECT(event, obj, ...) INVOKE (obj , EVENT_ ## OBJECT ## _ ## event, ## __VA_ARGS__)
151			#define INVOKE_CLIENT(event, obj, ...) INVOKE (obj , EVENT_ ## CLIENT ## _ ## event, ## __VA_ARGS__)
152			#define INVOKE_PLAYER(event, obj, ...) INVOKE (obj , EVENT_ ## PLAYER ## _ ## event, ## __VA_ARGS__)
153			#define INVOKE_MAP(event, obj, ...) INVOKE (obj , EVENT_ ## MAP ## _ ## event, ## __VA_ARGS__)
154	root	1.3
155	root	1.7	//TODO should index into @result
156			#define RESULT(idx,type) cfperl_result_ ## type (idx)
157	root	1.33	#define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE)
158			#define RESULT_INT(idx) RESULT(idx, INT)
159	root	1.7
160	root	1.34	double cfperl_result_DOUBLE (int idx);
161			int cfperl_result_INT (int idx);
162	root	1.7
163	root	1.42	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
164
165	root	1.47	INTERFACE_CLASS (attachable)
166	root	1.86	struct attachable : refcnt_base
167	root	1.6	{
168	root	1.42	static MGVTBL vtbl;
169
170	root	1.41	static unordered_vector<attachable *> mortals;
171	root	1.47	MTH static void check_mortals ();
172	root	1.41
173			enum {
174	root	1.54	F_DESTROYED = 0x01,
175			F_DEBUG_TRACE = 0x02,
176	root	1.41	};
177	root	1.86	int ACC (RW, flags);
178	root	1.41
179			// object is delete'd after the refcount reaches 0
180	root	1.49	MTH int refcnt_cnt () const;
181	root	1.41	// check wether the object has died and destroy
182	root	1.75	MTH void refcnt_chk () { if (expect_false (refcnt <= 0)) do_check (); }
183	root	1.41
184			// destroy the object unless it was already destroyed
185			// this politely asks everybody interested the reduce
186			// the refcount to 0 as soon as possible.
187	root	1.47	MTH void destroy ();
188	root	1.41
189			// return wether an object was destroyed already
190	root	1.47	MTH bool destroyed () const { return flags & F_DESTROYED; }
191	root	1.41
192			virtual void gather_callbacks (AV *&callbacks, event_type event) const;
193
194			#if 0
195			private:
196			static refcounted *rc_first;
197			refcounted *rc_next;
198			#endif
199
200			HV *self; // CF+ perl self
201	root	1.35	AV *cb; // CF+ callbacks
202	root	1.21	shstr attach; // generic extension attachment information
203	root	1.6
204	root	1.52	void sever_self (); // sever this object from its self, if it has one.
205			void optimise (); // possibly save some memory by destroying unneeded data
206	root	1.8
207	root	1.41	attachable ()
208	root	1.86	: flags (0), self (0), cb (0), attach (0)
209	root	1.8	{
210			}
211	root	1.22
212	root	1.41	attachable (const attachable &src)
213	root	1.86	: flags (0), self (0), cb (0), attach (src.attach)
214	root	1.22	{
215			}
216
217	root	1.82	// set a custom key to the given value, or delete it if value = 0
218	root	1.88	void set_key (const char key, const char value = 0, bool is_utf8 = 0);
219
220			void set_key_text (const char key, const char value = 0)
221			{
222			set_key (key, value, 1);
223			}
224
225			void set_key_data (const char key, const char value = 0)
226			{
227			set_key (key, value, 0);
228			}
229	root	1.82
230	root	1.41	attachable &operator =(const attachable &src);
231
232	root	1.66	// used to _quickly_ device wether to shortcut the evaluation
233			bool should_invoke (event_type event)
234	root	1.64	{
235	root	1.66	return ev_want_event [event] \|\| cb;
236	root	1.64	}
237
238	root	1.66	bool invoke (event_type event, ...);
239
240	root	1.48	MTH void instantiate ();
241	root	1.41	void reattach ();
242	root	1.24
243	root	1.41	protected:
244			// do the real refcount checking work
245			void do_check ();
246	root	1.25
247	root	1.41	// the method that does the real destroy work
248			virtual void do_destroy ();
249	root	1.83
250			// destructor is protected, should not be called by anybody
251			virtual ~attachable ();
252	root	1.6	};
253
254	root	1.41	// the global object is a pseudo object that cares for the global events
255			struct global : attachable
256	root	1.6	{
257	root	1.41	void gather_callbacks (AV *&callbacks, event_type event) const;
258	root	1.6	};
259
260	root	1.41	extern struct global gbl_ev;
261
262	root	1.42	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
263
264	root	1.89	INTERFACE_CLASS(object_freezer)
265	root	1.63	struct object_freezer : dynbuf_text
266	root	1.7	{
267	root	1.17	AV *av;
268	root	1.12
269	root	1.17	object_freezer ();
270	root	1.8	~object_freezer ();
271
272	root	1.41	void put (attachable *ext);
273	root	1.15
274	root	1.29	// used only for user-defined key-value pairs
275			void put (const shstr &k, const shstr &v)
276	root	1.20	{
277			add (k);
278
279	root	1.66	if (expect_true (v))
280	root	1.22	add (' '), add (v);
281	root	1.20
282			add ('\n');
283			}
284
285	root	1.29	template<typename T>
286	root	1.78	void put_kw_string (keyword k, const T &v)
287	root	1.20	{
288			int klen = keyword_len [k];
289	root	1.22	int vlen = v ? strlen (v) + 1 : 0;
290
291			char p = (char )alloc (klen + vlen + 1);
292
293			memcpy (p, keyword_str [k], klen); p += klen;
294
295	root	1.66	if (expect_true (v))
296	root	1.22	{
297	root	1.29	*p++ = ' '; vlen--;
298	root	1.22	memcpy (p, v, vlen); p += vlen;
299			}
300
301			*p = '\n';
302			}
303
304	root	1.45	void put (keyword k, const char *v = 0)
305	root	1.29	{
306	root	1.78	put_kw_string (k, v);
307	root	1.29	}
308
309	root	1.22	void put (keyword k, const shstr &v)
310			{
311	root	1.78	put_kw_string (k, v);
312	root	1.20	}
313	root	1.19
314	root	1.20	void put (keyword k, double v)
315			{
316	root	1.69	force (MAX_KEYWORD_LEN + 2 + 32);
317			fadd (keyword_str [k], keyword_len [k]);
318			fadd (' ');
319			falloc (sprintf (ptr, "%.7g", v));
320			fadd ('\n');
321	root	1.20	}
322
323			void put_(keyword k, sint64 v)
324			{
325	root	1.69	force (MAX_KEYWORD_LEN + 2 + sint64_digits);
326			fadd (keyword_str [k], keyword_len [k]);
327			fadd (' ');
328	root	1.20	add (v);
329	root	1.69	fadd ('\n');
330	root	1.20	}
331
332			void put_(keyword k, sint32 v)
333			{
334	root	1.69	force (MAX_KEYWORD_LEN + 2 + sint32_digits);
335			fadd (keyword_str [k], keyword_len [k]);
336			fadd (' ');
337	root	1.20	add (v);
338	root	1.69	fadd ('\n');
339	root	1.20	}
340
341	root	1.72	void put (keyword k, float v) { put (k, (double)v); }
342			void put (keyword k, signed char v) { put_(k, (sint32)v); }
343			void put (keyword k, unsigned char v) { put_(k, (sint32)v); }
344			void put (keyword k, signed short v) { put_(k, (sint32)v); }
345			void put (keyword k, unsigned short v) { put_(k, (sint32)v); }
346			void put (keyword k, signed int v) { put_(k, (sint32)v); }
347			void put (keyword k, unsigned int v) { put_(k, (sint64)v); }
348			void put (keyword k, signed long v) { put_(k, (sint64)v); }
349			void put (keyword k, unsigned long v) { put_(k, (sint64)v); }
350			void put (keyword k, signed long long v) { put_(k, (sint64)v); }
351			void put (keyword k, unsigned long long v) { put_(k, (sint64)v); }
352
353	root	1.23	void put (keyword kbeg, keyword kend, const shstr &v)
354	root	1.20	{
355	root	1.69	force (MAX_KEYWORD_LEN + 1);
356			fadd (keyword_str [kbeg], keyword_len [kbeg]); fadd ('\n');
357	root	1.20
358	root	1.66	if (expect_true (v))
359	root	1.20	{
360			add (v);
361			add ('\n');
362			}
363
364	root	1.69	force (MAX_KEYWORD_LEN + 1);
365			fadd (keyword_str [kend], keyword_len [kend]); fadd ('\n');
366	root	1.20	}
367
368	root	1.78	void put (keyword k, archetype *v);
369			void put (keyword k, treasurelist *v);
370			void put (keyword k, faceinfo *v);
371	root	1.18
372	root	1.32	template<typename T>
373			void put (keyword k, const refptr<T> &v)
374			{
375			put (k, (T *)v);
376			}
377
378	root	1.89	MTH bool save (const_octet_string path);
379	root	1.31	char *as_string (); // like strdup
380	root	1.17
381	root	1.16	operator bool () { return !!av; }
382	root	1.7	};
383
384	root	1.89	INTERFACE_CLASS(object_thawer)
385	root	1.17	struct object_thawer
386	root	1.7	{
387	root	1.66	char *line; // current beginning of line
388	root	1.21	SV *text; // text part
389			AV *av; // perl part
390	root	1.53	int linenum;
391	root	1.56	keyword kw;
392	root	1.66	char *kw_str; // the keyword parsed, as string
393			char *value; // the value, or 0 if no value
394	root	1.93	const char *value_nn; // the value, or the empty string if no value
395	root	1.47	const char *name;
396	root	1.21
397	root	1.89	operator bool () const { return !!text; }
398	root	1.16
399	root	1.47	object_thawer (const char *path = 0);
400	root	1.30	object_thawer (const char data, AV perlav);
401	root	1.8	~object_thawer ();
402
403	root	1.41	void get (attachable *obj, int oid);
404	root	1.15
405	root	1.56	// parse next line
406	root	1.89	MTH void next ();
407	root	1.57	// skip the current key-value (usually fetch next line, for
408	root	1.73	// multiline-fields, skips till the corresponding end-kw
409	root	1.89	MTH void skip ();
410			MTH void skip_block (); // skips till and over KW_end
411	root	1.57
412			char *get_str () { return value; } // may be 0
413	root	1.66	void get_ml (keyword kend, shstr &sh);
414	root	1.17
415	root	1.56	void get_ornull (shstr &sh) const { sh = value; }
416	root	1.66	void get (shstr &sh) const { sh = value; } // might want to check for non-null here
417	root	1.21
418	root	1.66	bool get_bool () const { return *value_nn == '1'; }
419	root	1.21	sint32 get_sint32 () const;
420	root	1.71	sint64 get_sint64 () const { return strtoll (value_nn, 0, 10); }
421			double get_double () const { return strtod (value_nn, 0); }
422	root	1.21
423	root	1.42	void get (float &v) { v = get_double (); }
424	root	1.21	void get (double &v) { v = get_double (); }
425
426	root	1.66	void get (bool &i) { i = get_bool (); }
427	root	1.21	void get (sint8 &i) { i = get_sint32 (); }
428			void get (uint8 &i) { i = get_sint32 (); }
429			void get (sint16 &i) { i = get_sint32 (); }
430			void get (uint16 &i) { i = get_sint32 (); }
431			void get (sint32 &i) { i = get_sint32 (); }
432
433			void get (uint32 &i) { i = get_sint64 (); }
434			void get (sint64 &i) { i = get_sint64 (); }
435	root	1.53
436	root	1.89	MTH void parse_warn (const char *msg);
437			MTH bool parse_error (const char type = 0, const char name = 0, bool skip = true);
438
439			struct delayed_ref {
440			attachable *op;
441			object_ptr *ptr;
442			const char *ref;
443			};
444			std::vector<delayed_ref> delrefs;
445
446			void delayed_deref (attachable op, object_ptr &ptr, const char ref);
447			MTH void resolve_delayed_derefs (bool deref = true);
448	root	1.7	};
449	root	1.2
450	root	1.53	//TODO: remove
451	root	1.21	char fgets (char s, int n, object_thawer &thawer);
452
453	root	1.42	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
454
455			struct coroapi {
456			static struct CoroAPI *GCoroAPI;
457
458	root	1.94	static EV_ATOMIC_T cede_pending;
459	root	1.46
460	root	1.94	static int nready () { return CORO_NREADY; }
461			static int cede () { cede_pending = 0; return CORO_CEDE ; }
462	root	1.46
463	root	1.62	static void do_cede_to_tick ();
464	root	1.46
465	root	1.94	// actually cede's far more often
466	root	1.77	static bool cede_to_tick ()
467	root	1.62	{
468	root	1.94	if (expect_true (!cede_pending))
469	root	1.77	return false;
470
471			do_cede_to_tick ();
472			return true;
473	root	1.62	}
474
475	root	1.61	static void wait_for_tick ();
476			static void wait_for_tick_begin ();
477	root	1.42	};
478
479	root	1.91	struct evapi
480	root	1.36	{
481	root	1.91	static struct EVAPI *GEVAPI;
482	root	1.36	};
483
484	root	1.91	struct iow : ev_io, evapi, callback<void (iow &, int)>
485	root	1.36	{
486	root	1.92	static void thunk (EV_P_ struct ev_io *w_, int revents)
487	root	1.91	{
488			iow &w = static_cast<iow >(w_);
489
490			w (w, revents);
491			}
492	root	1.36
493	root	1.91	template<class O, class M>
494			iow (O object, M method)
495			: callback<void (iow &, int)> (object, method)
496			{
497			ev_init ((ev_io *)this, thunk);
498			}
499	root	1.36
500	root	1.94	void prio (int prio)
501			{
502			ev_set_priority ((ev_io *)this, prio);
503			}
504
505	root	1.91	void set (int fd, int events)
506	root	1.36	{
507	root	1.91	ev_io_set ((ev_io *)this, fd, events);
508	root	1.36	}
509
510	root	1.91	int poll () const { return events; }
511
512			void poll (int events);
513	root	1.36
514	root	1.91	void start ()
515	root	1.38	{
516	root	1.92	ev_io_start (EV_DEFAULT, (ev_io *)this);
517	root	1.38	}
518
519	root	1.91	void stop ()
520			{
521	root	1.92	ev_io_stop (EV_DEFAULT, (ev_io *)this);
522	root	1.91	}
523	root	1.38
524	root	1.91	~iow ()
525	root	1.36	{
526	root	1.91	stop ();
527	root	1.36	}
528			};
529
530	root	1.94	struct asyncw : ev_async, evapi, callback<void (ev_async &, int)>
531			{
532			static void thunk (EV_P_ struct ev_async *w_, int revents)
533			{
534			asyncw &w = static_cast<asyncw >(w_);
535
536			w (w, revents);
537			}
538
539			template<class O, class M>
540			asyncw (O object, M method)
541			: callback<void (asyncw &, int)> (object, method)
542			{
543			ev_init ((ev_async *)this, thunk);
544			}
545
546			void start ()
547			{
548			ev_async_start (EV_DEFAULT, (ev_async *)this);
549			}
550
551			void stop ()
552			{
553			ev_async_stop (EV_DEFAULT, (ev_async *)this);
554			}
555
556			~asyncw ()
557			{
558			stop ();
559			}
560			};
561
562	root	1.2	#endif
563	root	1.3