server/include/cfperl.h

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

#include <cstdio>

using namespace std;

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

#include <EventAPI.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

// 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

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

// 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_emergency_save ();
void cfperl_cleanup (int make_core);

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

// virtual server time, excluding time jumps and lag
extern double runtime;

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
};

#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

// all these return true when the normal event processing should be skipped (if any)
#define INVOKE_GLOBAL(event, ...)          gbl_ev.invoke (EVENT_ ## GLOBAL     ## _ ## event, ## __VA_ARGS__, DT_END)
#define INVOKE_ATTACHABLE(event, obj, ...) (obj)->invoke (EVENT_ ## ATTACHABLE ## _ ## event, ## __VA_ARGS__, DT_END)
#define INVOKE_OBJECT(event, obj, ...)     (obj)->invoke (EVENT_ ## OBJECT     ## _ ## event, ## __VA_ARGS__, DT_END)
#define INVOKE_CLIENT(event, obj, ...)     (obj)->invoke (EVENT_ ## CLIENT     ## _ ## event, ## __VA_ARGS__, DT_END)
#define INVOKE_PLAYER(event, obj, ...)     (obj)->invoke (EVENT_ ## PLAYER     ## _ ## event, ## __VA_ARGS__, DT_END)
#define INVOKE_MAP(event, obj, ...)        (obj)->invoke (EVENT_ ## MAP        ## _ ## event, ## __VA_ARGS__, DT_END)

//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
{
  static MGVTBL vtbl;

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

  enum {
    F_DESTROYED   = 0x01,
    F_DEBUG_TRACE = 0x02,
  };

  // object is delete'd after the refcount reaches 0
  mutable int ACC (RW, refcnt);
  int ACC (RW, flags);

  MTH void refcnt_inc () const { ++refcnt; }
  MTH void refcnt_dec () const { --refcnt; }

  MTH int refcnt_cnt () const;
  // check wether the object has died and destroy
  MTH void refcnt_chk () { if (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), refcnt (0), self (0), cb (0), attach (0)
  {
  }

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

  virtual ~attachable ();

  attachable &operator =(const attachable &src);

  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 ();
};

// 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;

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

struct object_freezer : dynbuf
{
  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 (v)
      add (' '), add (v);

    add ('\n');
  }

  //TODO//temporary, used only for saving body locations
  void put (const char *k, int v)
  {
    add (k);
    add (' ');
    add (sint32 (v));
    add ('\n');
  }

  template<typename T>
  void put_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 (v)
      {
        *p++ = ' ';  vlen--;
        memcpy (p, v, vlen); p += vlen;
      }

    *p = '\n';
  }

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

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

  void put (keyword k, double v)
  {
    char buf [128];

    snprintf (buf, 128, "%.7g", v);

    put (k, (const char *)buf);
  }

  void put_(keyword k, sint64 v)
  {
    add (keyword_str [k], keyword_len [k]);
    add (' ');
    add (v);
    add ('\n');
  }

  void put_(keyword k, sint32 v)
  {
    add (keyword_str [k], keyword_len [k]);
    add (' ');
    add (v);
    add ('\n');
  }

  void put (keyword kbeg, keyword kend, const shstr &v)
  {
    add (keyword_str [kbeg], keyword_len [kbeg]); add ('\n');

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

    add (keyword_str [kend], keyword_len [kend]); add ('\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); }

  template<typename T>
  void put (keyword k, const T *v)
  {
    if (v)
      put (k, v->name);
    else
      put (k, (const char *)0);
  }

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

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

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

// compatibility support, should be removed when no longer needed
int fprintf (object_freezer &freezer, const char *format, ...);
int fputs (const char *s, object_freezer &freezer);

struct object_thawer
{
  SV *text; // text part
  AV *av;   // perl part
  int linenum;
  char *line; // current beginning of line
  keyword kw;
  char *kw_str, *value;
  const char *name;

  operator bool () { 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
  void next ();
  // skip the current key-value (usually fetch next line, for
  // multiline-fields, skips untilt he corresponding end-kw
  void skip ();

  //TODO: remove, deprecated
  keyword get_kv ()
  {
    next ();
    return kw;
  }


  char *get_str () { return value; } // may be 0

  void get (shstr &sh) const;
  void get_ornull (shstr &sh) const { sh = value; }
  void get_ml (keyword kend, shstr &sh);

  sint32 get_sint32 () const;
  sint64 get_sint64 () const;
  double get_double () const;

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

  void get (bool   &i) { i = get_sint32 (); }
  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 (); }

  bool parse_error (const char *type = 0, const char *name = 0, bool skip = true);
};

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

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

struct coroapi {
  static struct CoroAPI *GCoroAPI;

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

  static int cede_counter;

  static void cede_every (int count)
  {
    if (++cede_counter >= count)
      {
        cede_counter = 0;

        if (coroapi::nready ())
          coroapi::cede ();
      }
  }
};

struct watcher_base
{
  static struct EventAPI *GEventAPI;
};

template<class base>
struct watcher : watcher_base
{
  base *pe;

  void start   (bool repeat = false)        { GEventAPI->start   ((pe_watcher *)pe, repeat); }
  void stop    (bool cancel_events = false) { GEventAPI->stop    ((pe_watcher *)pe, cancel_events); }
  void now     ()                           { GEventAPI->now     ((pe_watcher *)pe); }
  void suspend ()                           { GEventAPI->suspend ((pe_watcher *)pe); }
  void resume  ()                           { GEventAPI->resume  ((pe_watcher *)pe); }

  void prio    (int new_prio)               { ((pe_watcher *)pe)->prio = new_prio; }

  ~watcher ()
  {
    cancel ();
  }

private:
  void cancel  ()                           { GEventAPI->cancel  ((pe_watcher *)pe); } // private
};

struct iw : watcher<pe_idle>, callback<void (iw &)>
{
  template<class O, class M>
  iw (O object, M method)
  : callback<void (iw &)> (object, method)
  {
    alloc ();
  }

private:
  void alloc ();
};

struct iow : watcher<pe_io>, callback<void (iow &, int)>
{
  template<class O, class M>
  iow (O object, M method)
  : callback<void (iow &, int)> (object, method)
  {
    alloc ();
  }

  void fd (int fd);
  int poll ();
  void poll (int events);

private:
  void alloc ();
};

#endif

Revision:	1.57
Committed:	Fri Feb 16 19:43:41 2007 UTC (17 years, 3 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.56:	+8 -7 lines
Log Message:	- identified random memory corrutpion bug - fixed most likely cause for bug above - rewrote object loader etc. into a simple one-line lookahead parser. - rewrote/cleaned up archetype, treasure, artifact, formula parser. - some optimisations / cleanups
#	Content
1	//
2	// cfperl.h perl interface
3	//
4	#ifndef CFPERL_H__
5	#define CFPERL_H__
6
7	#include <cstdio>
8
9	using namespace std;
10
11	#include <EXTERN.h>
12	#include <perl.h>
13	#include <XSUB.h>
14
15	#include <EventAPI.h>
16	#include <CoroAPI.h>
17
18	#include "util.h"
19	#include "keyword.h"
20	#include "dynbuf.h"
21	#include "callback.h"
22
23	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
24
25	// optimisations/workaround for functions requiring my_perl in scope (anti-bloat)
26	#undef localtime
27	#undef srand48
28	#undef drand48
29	#undef srandom
30	#undef readdir
31	#undef getprotobyname
32	#undef gethostbyname
33	#undef ctime
34	#undef strerror
35
36	// same here, massive symbol spamming
37	#undef do_open
38	#undef do_close
39	#undef ref
40	#undef seed
41
42	// perl bug #40256: perl does overwrite those with reentrant versions
43	// but does not initialise their state structures.
44	#undef random
45	#undef crypt
46
47	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
48
49	// some macros to simplify perl in-calls
50
51	#define CHECK_ERROR \
52	if (SvTRUE (ERRSV)) \
53	LOG (llevError, "runtime error in %s: %s\n", __func__, SvPVutf8_nolen (ERRSV));
54
55	#define CALL_BEGIN(args) dSP; ENTER; SAVETMPS; PUSHMARK (SP); EXTEND (SP, args)
56	#define CALL_ARG_SV(sv) PUSHs (sv_2mortal (sv)) // separate because no refcount inc
57	#define CALL_ARG(expr) PUSHs (sv_2mortal (to_sv (expr)))
58	#define CALL_CALL(name, flags) PUTBACK; int count = call_pv (name, (flags) \| G_EVAL); SPAGAIN;
59	#define CALL_END CHECK_ERROR; FREETMPS; LEAVE
60
61	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
62
63	void cfperl_init ();
64	void cfperl_main ();
65	void cfperl_emergency_save ();
66	void cfperl_cleanup (int make_core);
67
68	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
69
70	// virtual server time, excluding time jumps and lag
71	extern double runtime;
72
73	enum event_klass
74	{
75	KLASS_NONE,
76	KLASS_GLOBAL,
77	KLASS_ATTACHABLE,
78	KLASS_CLIENT,
79	KLASS_PLAYER,
80	KLASS_OBJECT,
81	KLASS_MAP,
82	KLASS_COMMAND,
83	};
84
85	enum event_type
86	{
87	# define def(klass,name) EVENT_ ## klass ## _ ## name,
88	# include "eventinc.h"
89	# undef def
90	NUM_EVENT_TYPES
91	};
92
93	#define ARG_AV(o) DT_AV , static_cast<AV *> (o)
94	#define ARG_INT(v) DT_INT , static_cast<int> (v)
95	#define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v)
96	#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v)
97	#define ARG_STRING(v) DT_STRING, static_cast<const char *> (v)
98	#define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), int (l)
99	#define ARG_OBJECT(o) DT_OBJECT, (void )(static_cast<object > (o))
100	#define ARG_MAP(o) DT_MAP , (void )(static_cast<maptile > (o))
101	#define ARG_PLAYER(o) DT_PLAYER, (void )(static_cast<player > (o))
102	#define ARG_ARCH(o) DT_ARCH , (void )(static_cast<archetype > (o))
103	#define ARG_CLIENT(o) DT_CLIENT, (void )(static_cast<client > (o))
104	#define ARG_PARTY(o) DT_PARTY , (void )(static_cast<party > (o))
105	#define ARG_REGION(o) DT_REGION, (void )(static_cast<region > (o))
106
107	// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension
108
109	// all these return true when the normal event processing should be skipped (if any)
110	#define INVOKE_GLOBAL(event, ...) gbl_ev.invoke (EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__, DT_END)
111	#define INVOKE_ATTACHABLE(event, obj, ...) (obj)->invoke (EVENT_ ## ATTACHABLE ## _ ## event, ## __VA_ARGS__, DT_END)
112	#define INVOKE_OBJECT(event, obj, ...) (obj)->invoke (EVENT_ ## OBJECT ## _ ## event, ## __VA_ARGS__, DT_END)
113	#define INVOKE_CLIENT(event, obj, ...) (obj)->invoke (EVENT_ ## CLIENT ## _ ## event, ## __VA_ARGS__, DT_END)
114	#define INVOKE_PLAYER(event, obj, ...) (obj)->invoke (EVENT_ ## PLAYER ## _ ## event, ## __VA_ARGS__, DT_END)
115	#define INVOKE_MAP(event, obj, ...) (obj)->invoke (EVENT_ ## MAP ## _ ## event, ## __VA_ARGS__, DT_END)
116
117	//TODO should index into @result
118	#define RESULT(idx,type) cfperl_result_ ## type (idx)
119	#define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE)
120	#define RESULT_INT(idx) RESULT(idx, INT)
121
122	double cfperl_result_DOUBLE (int idx);
123	int cfperl_result_INT (int idx);
124
125	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
126
127	INTERFACE_CLASS (attachable)
128	struct attachable
129	{
130	static MGVTBL vtbl;
131
132	static unordered_vector<attachable *> mortals;
133	MTH static void check_mortals ();
134
135	enum {
136	F_DESTROYED = 0x01,
137	F_DEBUG_TRACE = 0x02,
138	};
139
140	// object is delete'd after the refcount reaches 0
141	mutable int ACC (RW, refcnt);
142	int ACC (RW, flags);
143
144	MTH void refcnt_inc () const { ++refcnt; }
145	MTH void refcnt_dec () const { --refcnt; }
146
147	MTH int refcnt_cnt () const;
148	// check wether the object has died and destroy
149	MTH void refcnt_chk () { if (refcnt <= 0) do_check (); }
150
151	// destroy the object unless it was already destroyed
152	// this politely asks everybody interested the reduce
153	// the refcount to 0 as soon as possible.
154	MTH void destroy ();
155
156	// return wether an object was destroyed already
157	MTH bool destroyed () const { return flags & F_DESTROYED; }
158
159	virtual void gather_callbacks (AV *&callbacks, event_type event) const;
160
161	#if 0
162	private:
163	static refcounted *rc_first;
164	refcounted *rc_next;
165	#endif
166
167	HV *self; // CF+ perl self
168	AV *cb; // CF+ callbacks
169	shstr attach; // generic extension attachment information
170
171	void sever_self (); // sever this object from its self, if it has one.
172	void optimise (); // possibly save some memory by destroying unneeded data
173
174	attachable ()
175	: flags (0), refcnt (0), self (0), cb (0), attach (0)
176	{
177	}
178
179	attachable (const attachable &src)
180	: flags (0), refcnt (0), self (0), cb (0), attach (src.attach)
181	{
182	}
183
184	virtual ~attachable ();
185
186	attachable &operator =(const attachable &src);
187
188	bool invoke (event_type event, ...);
189	MTH void instantiate ();
190	void reattach ();
191
192	protected:
193	// do the real refcount checking work
194	void do_check ();
195
196	// the method that does the real destroy work
197	virtual void do_destroy ();
198	};
199
200	// the global object is a pseudo object that cares for the global events
201	struct global : attachable
202	{
203	void gather_callbacks (AV *&callbacks, event_type event) const;
204	};
205
206	extern struct global gbl_ev;
207
208	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
209
210	struct object_freezer : dynbuf
211	{
212	AV *av;
213
214	object_freezer ();
215	~object_freezer ();
216
217	void put (attachable *ext);
218
219	// used only for user-defined key-value pairs
220	void put (const shstr &k, const shstr &v)
221	{
222	add (k);
223
224	if (v)
225	add (' '), add (v);
226
227	add ('\n');
228	}
229
230	//TODO//temporary, used only for saving body locations
231	void put (const char *k, int v)
232	{
233	add (k);
234	add (' ');
235	add (sint32 (v));
236	add ('\n');
237	}
238
239	template<typename T>
240	void put_string (keyword k, const T &v)
241	{
242	int klen = keyword_len [k];
243	int vlen = v ? strlen (v) + 1 : 0;
244
245	char p = (char )alloc (klen + vlen + 1);
246
247	memcpy (p, keyword_str [k], klen); p += klen;
248
249	if (v)
250	{
251	*p++ = ' '; vlen--;
252	memcpy (p, v, vlen); p += vlen;
253	}
254
255	*p = '\n';
256	}
257
258	void put (keyword k, const char *v = 0)
259	{
260	put_string (k, v);
261	}
262
263	void put (keyword k, const shstr &v)
264	{
265	put_string (k, v);
266	}
267
268	void put (keyword k, double v)
269	{
270	char buf [128];
271
272	snprintf (buf, 128, "%.7g", v);
273
274	put (k, (const char *)buf);
275	}
276
277	void put_(keyword k, sint64 v)
278	{
279	add (keyword_str [k], keyword_len [k]);
280	add (' ');
281	add (v);
282	add ('\n');
283	}
284
285	void put_(keyword k, sint32 v)
286	{
287	add (keyword_str [k], keyword_len [k]);
288	add (' ');
289	add (v);
290	add ('\n');
291	}
292
293	void put (keyword kbeg, keyword kend, const shstr &v)
294	{
295	add (keyword_str [kbeg], keyword_len [kbeg]); add ('\n');
296
297	if (v)
298	{
299	add (v);
300	add ('\n');
301	}
302
303	add (keyword_str [kend], keyword_len [kend]); add ('\n');
304	}
305
306	void put (keyword k, float v) { put (k, (double)v); }
307	void put (keyword k, signed char v) { put_(k, (sint32)v); }
308	void put (keyword k, unsigned char v) { put_(k, (sint32)v); }
309	void put (keyword k, signed short v) { put_(k, (sint32)v); }
310	void put (keyword k, unsigned short v) { put_(k, (sint32)v); }
311	void put (keyword k, signed int v) { put_(k, (sint32)v); }
312	void put (keyword k, unsigned int v) { put_(k, (sint64)v); }
313	void put (keyword k, signed long v) { put_(k, (sint64)v); }
314	void put (keyword k, unsigned long v) { put_(k, (sint64)v); }
315	void put (keyword k, signed long long v) { put_(k, (sint64)v); }
316	void put (keyword k, unsigned long long v) { put_(k, (sint64)v); }
317
318	template<typename T>
319	void put (keyword k, const T *v)
320	{
321	if (v)
322	put (k, v->name);
323	else
324	put (k, (const char *)0);
325	}
326
327	template<typename T>
328	void put (keyword k, const refptr<T> &v)
329	{
330	put (k, (T *)v);
331	}
332
333	bool save (const char *path);
334	char *as_string (); // like strdup
335
336	operator bool () { return !!av; }
337	};
338
339	// compatibility support, should be removed when no longer needed
340	int fprintf (object_freezer &freezer, const char *format, ...);
341	int fputs (const char *s, object_freezer &freezer);
342
343	struct object_thawer
344	{
345	SV *text; // text part
346	AV *av; // perl part
347	int linenum;
348	char *line; // current beginning of line
349	keyword kw;
350	char kw_str, value;
351	const char *name;
352
353	operator bool () { return !!text; }
354
355	object_thawer (const char *path = 0);
356	object_thawer (const char data, AV perlav);
357	~object_thawer ();
358
359	void get (attachable *obj, int oid);
360
361	// parse next line
362	void next ();
363	// skip the current key-value (usually fetch next line, for
364	// multiline-fields, skips untilt he corresponding end-kw
365	void skip ();
366
367	//TODO: remove, deprecated
368	keyword get_kv ()
369	{
370	next ();
371	return kw;
372	}
373
374
375	char *get_str () { return value; } // may be 0
376
377	void get (shstr &sh) const;
378	void get_ornull (shstr &sh) const { sh = value; }
379	void get_ml (keyword kend, shstr &sh);
380
381	sint32 get_sint32 () const;
382	sint64 get_sint64 () const;
383	double get_double () const;
384
385	void get (float &v) { v = get_double (); }
386	void get (double &v) { v = get_double (); }
387
388	void get (bool &i) { i = get_sint32 (); }
389	void get (sint8 &i) { i = get_sint32 (); }
390	void get (uint8 &i) { i = get_sint32 (); }
391	void get (sint16 &i) { i = get_sint32 (); }
392	void get (uint16 &i) { i = get_sint32 (); }
393	void get (sint32 &i) { i = get_sint32 (); }
394
395	void get (uint32 &i) { i = get_sint64 (); }
396	void get (sint64 &i) { i = get_sint64 (); }
397
398	bool parse_error (const char type = 0, const char name = 0, bool skip = true);
399	};
400
401	//TODO: remove
402	char fgets (char s, int n, object_thawer &thawer);
403
404	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
405
406	struct coroapi {
407	static struct CoroAPI *GCoroAPI;
408
409	static int nready () { return CORO_NREADY; }
410	static int cede () { return CORO_CEDE ; }
411
412	static int cede_counter;
413
414	static void cede_every (int count)
415	{
416	if (++cede_counter >= count)
417	{
418	cede_counter = 0;
419
420	if (coroapi::nready ())
421	coroapi::cede ();
422	}
423	}
424	};
425
426	struct watcher_base
427	{
428	static struct EventAPI *GEventAPI;
429	};
430
431	template<class base>
432	struct watcher : watcher_base
433	{
434	base *pe;
435
436	void start (bool repeat = false) { GEventAPI->start ((pe_watcher *)pe, repeat); }
437	void stop (bool cancel_events = false) { GEventAPI->stop ((pe_watcher *)pe, cancel_events); }
438	void now () { GEventAPI->now ((pe_watcher *)pe); }
439	void suspend () { GEventAPI->suspend ((pe_watcher *)pe); }
440	void resume () { GEventAPI->resume ((pe_watcher *)pe); }
441
442	void prio (int new_prio) { ((pe_watcher *)pe)->prio = new_prio; }
443
444	~watcher ()
445	{
446	cancel ();
447	}
448
449	private:
450	void cancel () { GEventAPI->cancel ((pe_watcher *)pe); } // private
451	};
452
453	struct iw : watcher<pe_idle>, callback<void (iw &)>
454	{
455	template<class O, class M>
456	iw (O object, M method)
457	: callback<void (iw &)> (object, method)
458	{
459	alloc ();
460	}
461
462	private:
463	void alloc ();
464	};
465
466	struct iow : watcher<pe_io>, callback<void (iow &, int)>
467	{
468	template<class O, class M>
469	iow (O object, M method)
470	: callback<void (iow &, int)> (object, method)
471	{
472	alloc ();
473	}
474
475	void fd (int fd);
476	int poll ();
477	void poll (int events);
478
479	private:
480	void alloc ();
481	};
482
483	#endif
484