[ViewVC] Diff of: cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.269 by root, Fri Nov 14 06:50:11 2008 UTC vs.
Revision 1.280 by root, Sun Nov 16 09:43:18 2008 UTC

…		…
142	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
143		143
144	#include "CoroAPI.h"	144	#include "CoroAPI.h"
145		145
146	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
147
148	static perl_mutex coro_lock;
149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151	# if CORO_PTHREAD	147	# if CORO_PTHREAD
152	static void *coro_thx;	148	static void *coro_thx;
153	# endif	149	# endif
154
155	#else
156
157	# define LOCK (void)0
158	# define UNLOCK (void)0
159
160	#endif	150	#endif
161
162	# undef LOCK
163	# define LOCK (void)0
164	# undef UNLOCK
165	# define UNLOCK (void)0
166		151
167	/* helper storage struct for Coro::AIO */	152	/* helper storage struct for Coro::AIO */
168	struct io_state	153	struct io_state
169	{	154	{
170	AV *res;	155	AV *res;
…		…
183	static JMPENV *main_top_env;	168	static JMPENV *main_top_env;
184	static HV coro_state_stash, coro_stash;	169	static HV coro_state_stash, coro_stash;
185	static volatile SV coro_mortal; / will be freed/thrown after next transfer */	170	static volatile SV coro_mortal; / will be freed/thrown after next transfer */
186	static volatile struct coro *transfer_next;	171	static volatile struct coro *transfer_next;
187		172
188	struct transfer_args
189	{
190	struct coro prev, next;
191	};
192
193	static GV irsgv; / $/ */	173	static GV irsgv; / $/ */
194	static GV stdoutgv; / STDOUT /	174	static GV stdoutgv; / STDOUT /
195	static SV *rv_diehook;	175	static SV *rv_diehook;
196	static SV *rv_warnhook;	176	static SV *rv_warnhook;
197	static HV hv_sig; / %SIG */	177	static HV hv_sig; / %SIG */
…		…
215	CC_TRACE_LINE = 0x10, /* trace each statement */	195	CC_TRACE_LINE = 0x10, /* trace each statement */
216	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,	196	CC_TRACE_ALL = CC_TRACE_SUB \| CC_TRACE_LINE,
217	};	197	};
218		198
219	/* this is a structure representing a c-level coroutine */	199	/* this is a structure representing a c-level coroutine */
220	typedef struct coro_cctx {	200	typedef struct coro_cctx
		201	{
221	struct coro_cctx *next;	202	struct coro_cctx *next;
222		203
223	/* the stack */	204	/* the stack */
224	void *sptr;	205	void *sptr;
225	size_t ssize;	206	size_t ssize;
…		…
243	CF_NEW = 0x0004, /* has never been switched to */	224	CF_NEW = 0x0004, /* has never been switched to */
244	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	225	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245	};	226	};
246		227
247	/* the structure where most of the perl state is stored, overlaid on the cxstack */	228	/* the structure where most of the perl state is stored, overlaid on the cxstack */
248	typedef struct {	229	typedef struct
		230	{
249	SV *defsv;	231	SV *defsv;
250	AV *defav;	232	AV *defav;
251	SV *errsv;	233	SV *errsv;
252	SV *irsgv;	234	SV *irsgv;
253	#define VAR(name,type) type name;	235	#define VAR(name,type) type name;
…		…
257		239
258	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	240	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259		241
260	/* this is a structure representing a perl-level coroutine */	242	/* this is a structure representing a perl-level coroutine */
261	struct coro {	243	struct coro {
262	/* the c coroutine allocated to this perl coroutine, if any */	244	/* the C coroutine allocated to this perl coroutine, if any */
263	coro_cctx *cctx;	245	coro_cctx *cctx;
264		246
265	/* process data */	247	/* process data */
		248	struct CoroSLF slf_frame; /* saved slf frame */
266	AV *mainstack;	249	AV *mainstack;
267	perl_slots slot; / basically the saved sp */	250	perl_slots slot; / basically the saved sp */
268		251
269	AV args; / data associated with this coroutine (initial args) */	252	AV args; / data associated with this coroutine (initial args) */
270	int refcnt; /* coroutines are refcounted, yes */	253	int refcnt; /* coroutines are refcounted, yes */
271	int flags; /* CF_ flags */	254	int flags; /* CF_ flags */
272	HV hv; / the perl hash associated with this coro, if any */	255	HV hv; / the perl hash associated with this coro, if any */
		256	void (on_destroy)(pTHX_ struct coro coro);
273		257
274	/* statistics */	258	/* statistics */
275	int usecount; /* number of transfers to this coro */	259	int usecount; /* number of transfers to this coro */
276		260
277	/* coro process data */	261	/* coro process data */
…		…
285	struct coro next, prev;	269	struct coro next, prev;
286	};	270	};
287		271
288	typedef struct coro *Coro__State;	272	typedef struct coro *Coro__State;
289	typedef struct coro *Coro__State_or_hashref;	273	typedef struct coro *Coro__State_or_hashref;
		274
		275	static struct CoroSLF slf_frame; /* the current slf frame */
290		276
291	/ Coro ******************************************************************/	277	/ Coro ******************************************************************/
292		278
293	#define PRIO_MAX 3	279	#define PRIO_MAX 3
294	#define PRIO_HIGH 1	280	#define PRIO_HIGH 1
…		…
299		285
300	/* for Coro.pm */	286	/* for Coro.pm */
301	static SV *coro_current;	287	static SV *coro_current;
302	static SV *coro_readyhook;	288	static SV *coro_readyhook;
303	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	289	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
304	static int coro_nready;
305	static struct coro *coro_first;	290	static struct coro *coro_first;
		291	#define coro_nready coroapi.nready
306		292
307	/ lowlevel stuff ********************************************************/	293	/ lowlevel stuff ********************************************************/
308		294
309	static SV *	295	static SV *
310	coro_get_sv (pTHX_ const char *name, int create)	296	coro_get_sv (pTHX_ const char *name, int create)
…		…
514	CvPADLIST (cv) = (AV *)POPs;	500	CvPADLIST (cv) = (AV *)POPs;
515	}	501	}
516		502
517	PUTBACK;	503	PUTBACK;
518	}	504	}
		505
		506	slf_frame = c->slf_frame;
519	}	507	}
520		508
521	static void	509	static void
522	save_perl (pTHX_ Coro__State c)	510	save_perl (pTHX_ Coro__State c)
523	{	511	{
		512	c->slf_frame = slf_frame;
		513
524	{	514	{
525	dSP;	515	dSP;
526	I32 cxix = cxstack_ix;	516	I32 cxix = cxstack_ix;
527	PERL_CONTEXT *ccstk = cxstack;	517	PERL_CONTEXT *ccstk = cxstack;
528	PERL_SI *top_si = PL_curstackinfo;	518	PERL_SI *top_si = PL_curstackinfo;
…		…
595	#undef VAR	585	#undef VAR
596	}	586	}
597	}	587	}
598		588
599	/*	589	/*
600	* allocate various perl stacks. This is an exact copy	590	* allocate various perl stacks. This is almost an exact copy
601	* of perl.c:init_stacks, except that it uses less memory	591	* of perl.c:init_stacks, except that it uses less memory
602	* on the (sometimes correct) assumption that coroutines do	592	* on the (sometimes correct) assumption that coroutines do
603	* not usually need a lot of stackspace.	593	* not usually need a lot of stackspace.
604	*/	594	*/
605	#if CORO_PREFER_PERL_FUNCTIONS	595	#if CORO_PREFER_PERL_FUNCTIONS
…		…
712	#endif	702	#endif
713	}	703	}
714	}	704	}
715		705
716	return rss;	706	return rss;
717	}
718
719	/ set stacklevel support ************************************************/
720
721	/* we sometimes need to create the effect of pp_slf calling us */
722	#define SLF_HEAD (void)0
723	/* we sometimes need to create the effect of leaving via pp_slf */
724	#define SLF_TAIL slf_tail (aTHX)
725
726	INLINE void
727	slf_tail (pTHX)
728	{
729	dSP;
730	SV **bot = SP;
731
732	int gimme = GIMME_V;
733
734	/* make sure we put something on the stack in scalar context */
735	if (gimme == G_SCALAR)
736	{
737	if (sp == bot)
738	XPUSHs (&PL_sv_undef);
739
740	SP = bot + 1;
741	}
742
743	PUTBACK;
744	}	707	}
745		708
746	/ coroutine stack handling **********************************************/	709	/ coroutine stack handling **********************************************/
747		710
748	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);	711	static int (orig_sigelem_get) (pTHX_ SV sv, MAGIC *mg);
…		…
834		797
835	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	798	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836	}	799	}
837		800
838	static void	801	static void
		802	prepare_nop (pTHX_ struct coro_transfer_args *ta)
		803	{
		804	/* kind of mega-hacky, but works */
		805	ta->next = ta->prev = (struct coro *)ta;
		806	}
		807
		808	static int
		809	slf_check_nop (pTHX_ struct CoroSLF *frame)
		810	{
		811	return 0;
		812	}
		813
		814	static void
839	coro_setup (pTHX_ struct coro *coro)	815	coro_setup (pTHX_ struct coro *coro)
840	{	816	{
841	/*	817	/*
842	* emulate part of the perl startup here.	818	* emulate part of the perl startup here.
843	*/	819	*/
…		…
882	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	858	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883	SPAGAIN;	859	SPAGAIN;
884	}	860	}
885		861
886	/* this newly created coroutine might be run on an existing cctx which most	862	/* this newly created coroutine might be run on an existing cctx which most
887	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,	863	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888	* so we have to emulate entering pp_set_stacklevel here.
889	*/	864	*/
890	SLF_HEAD;	865	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
		866	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
891	}	867	}
892		868
893	static void	869	static void
894	coro_destruct (pTHX_ struct coro *coro)	870	coro_destruct (pTHX_ struct coro *coro)
895	{	871	{
…		…
1059	TAINT_NOT;	1035	TAINT_NOT;
1060	return 0;	1036	return 0;
1061	}	1037	}
1062		1038
1063	static void	1039	static void
1064	prepare_set_stacklevel (struct transfer_args ta, struct coro_cctx cctx)	1040	prepare_set_stacklevel (struct coro_transfer_args ta, struct coro_cctx cctx)
1065	{	1041	{
1066	ta->prev = (struct coro *)cctx;	1042	ta->prev = (struct coro *)cctx;
1067	ta->next = 0;	1043	ta->next = 0;
1068	}	1044	}
1069		1045
…		…
1103	struct coro next = (struct coro )transfer_next;	1079	struct coro next = (struct coro )transfer_next;
1104	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */	1080	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));	1081	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106		1082
1107	free_coro_mortal (aTHX);	1083	free_coro_mortal (aTHX);
1108	UNLOCK;
1109		1084
1110	if (expect_false (next->throw))	1085	if (expect_false (next->throw))
1111	{	1086	{
1112	SV *exception = sv_2mortal (next->throw);	1087	SV *exception = sv_2mortal (next->throw);
1113		1088
…		…
1129	# endif	1104	# endif
1130	#endif	1105	#endif
1131	{	1106	{
1132	dTHX;	1107	dTHX;
1133		1108
1134	/* we are the alternative tail to pp_set_stacklevel */	1109	/* normally we would need to skip the entersub here */
1135	/* so do the same things here */	1110	/* not doing so will re-execute it, which is exactly what we want */
1136	SLF_TAIL;
1137
1138	/* we now skip the op that did lead to transfer() */
1139	PL_op = PL_op->op_next;	1111	/* PL_nop = PL_nop->op_next */
1140		1112
1141	/* inject a fake subroutine call to cctx_init */	1113	/* inject a fake subroutine call to cctx_init */
1142	cctx_prepare (aTHX_ (coro_cctx *)arg);	1114	cctx_prepare (aTHX_ (coro_cctx *)arg);
1143		1115
1144	/* cctx_run is the alternative tail of transfer() */	1116	/* cctx_run is the alternative tail of transfer() */
		1117	/* TODO: throwing an exception here might be deadly, VERIFY */
1145	transfer_tail (aTHX);	1118	transfer_tail (aTHX);
1146		1119
1147	/* somebody or something will hit me for both perl_run and PL_restartop */	1120	/* somebody or something will hit me for both perl_run and PL_restartop */
1148	PL_restartop = PL_op;	1121	PL_restartop = PL_op;
1149	perl_run (PL_curinterp);	1122	perl_run (PL_curinterp);
…		…
1308	transfer_check (pTHX_ struct coro prev, struct coro next)	1281	transfer_check (pTHX_ struct coro prev, struct coro next)
1309	{	1282	{
1310	if (expect_true (prev != next))	1283	if (expect_true (prev != next))
1311	{	1284	{
1312	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))	1285	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
1313	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1286	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1314		1287
1315	if (expect_false (next->flags & CF_RUNNING))	1288	if (expect_false (next->flags & CF_RUNNING))
1316	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1289	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317		1290
1318	if (expect_false (next->flags & CF_DESTROYED))	1291	if (expect_false (next->flags & CF_DESTROYED))
1319	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1292	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320		1293
1321	#if !PERL_VERSION_ATLEAST (5,10,0)	1294	#if !PERL_VERSION_ATLEAST (5,10,0)
1322	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1295	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");	1296	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324	#endif	1297	#endif
1325	}	1298	}
1326	}	1299	}
1327		1300
1328	/* always use the TRANSFER macro */	1301	/* always use the TRANSFER macro */
…		…
1332	dSTACKLEVEL;	1305	dSTACKLEVEL;
1333		1306
1334	/* sometimes transfer is only called to set idle_sp */	1307	/* sometimes transfer is only called to set idle_sp */
1335	if (expect_false (!next))	1308	if (expect_false (!next))
1336	{	1309	{
1337	((coro_cctx *)prev)->idle_sp = stacklevel;	1310	((coro_cctx )prev)->idle_sp = (void )stacklevel;
1338	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1311	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
1339	}	1312	}
1340	else if (expect_true (prev != next))	1313	else if (expect_true (prev != next))
1341	{	1314	{
1342	coro_cctx *prev__cctx;	1315	coro_cctx *prev__cctx;
…		…
1349	prev->flags \|= CF_RUNNING;	1322	prev->flags \|= CF_RUNNING;
1350	}	1323	}
1351		1324
1352	prev->flags &= ~CF_RUNNING;	1325	prev->flags &= ~CF_RUNNING;
1353	next->flags \|= CF_RUNNING;	1326	next->flags \|= CF_RUNNING;
1354
1355	LOCK;
1356		1327
1357	/* first get rid of the old state */	1328	/* first get rid of the old state */
1358	save_perl (aTHX_ prev);	1329	save_perl (aTHX_ prev);
1359		1330
1360	if (expect_false (next->flags & CF_NEW))	1331	if (expect_false (next->flags & CF_NEW))
…		…
1369		1340
1370	prev__cctx = prev->cctx;	1341	prev__cctx = prev->cctx;
1371		1342
1372	/* possibly untie and reuse the cctx */	1343	/* possibly untie and reuse the cctx */
1373	if (expect_true (	1344	if (expect_true (
1374	prev__cctx->idle_sp == stacklevel	1345	prev__cctx->idle_sp == (void *)stacklevel
1375	&& !(prev__cctx->flags & CC_TRACE)	1346	&& !(prev__cctx->flags & CC_TRACE)
1376	&& !force_cctx	1347	&& !force_cctx
1377	))	1348	))
1378	{	1349	{
1379	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1350	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
…		…
1418	coro_state_destroy (pTHX_ struct coro *coro)	1389	coro_state_destroy (pTHX_ struct coro *coro)
1419	{	1390	{
1420	if (coro->flags & CF_DESTROYED)	1391	if (coro->flags & CF_DESTROYED)
1421	return 0;	1392	return 0;
1422		1393
		1394	if (coro->on_destroy)
		1395	coro->on_destroy (aTHX_ coro);
		1396
1423	coro->flags \|= CF_DESTROYED;	1397	coro->flags \|= CF_DESTROYED;
1424		1398
1425	if (coro->flags & CF_READY)	1399	if (coro->flags & CF_READY)
1426	{	1400	{
1427	/* reduce nready, as destroying a ready coro effectively unreadies it */	1401	/* reduce nready, as destroying a ready coro effectively unreadies it */
1428	/* alternative: look through all ready queues and remove the coro */	1402	/* alternative: look through all ready queues and remove the coro */
1429	LOCK;
1430	--coro_nready;	1403	--coro_nready;
1431	UNLOCK;
1432	}	1404	}
1433	else	1405	else
1434	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */	1406	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
1435		1407
1436	if (coro->mainstack && coro->mainstack != main_mainstack)	1408	if (coro->mainstack && coro->mainstack != main_mainstack)
1437	{	1409	{
1438	struct coro temp;	1410	struct coro temp;
1439		1411
1440	if (coro->flags & CF_RUNNING)	1412	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441	croak ("FATAL: tried to destroy currently running coroutine");
1442		1413
1443	save_perl (aTHX_ &temp);	1414	save_perl (aTHX_ &temp);
1444	load_perl (aTHX_ coro);	1415	load_perl (aTHX_ coro);
1445		1416
1446	coro_destruct (aTHX_ coro);	1417	coro_destruct (aTHX_ coro);
…		…
1497	# define MGf_DUP 0	1468	# define MGf_DUP 0
1498	#endif	1469	#endif
1499	};	1470	};
1500		1471
1501	static void	1472	static void
1502	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)	1473	prepare_transfer (pTHX_ struct coro_transfer_args ta, SV prev_sv, SV *next_sv)
1503	{	1474	{
1504	ta->prev = SvSTATE (prev_sv);	1475	ta->prev = SvSTATE (prev_sv);
1505	ta->next = SvSTATE (next_sv);	1476	ta->next = SvSTATE (next_sv);
1506	TRANSFER_CHECK (*ta);	1477	TRANSFER_CHECK (*ta);
1507	}	1478	}
1508		1479
1509	static void	1480	static void
1510	api_transfer (SV prev_sv, SV next_sv)	1481	api_transfer (pTHX_ SV prev_sv, SV next_sv)
1511	{	1482	{
1512	dTHX;
1513	struct transfer_args ta;	1483	struct coro_transfer_args ta;
1514		1484
1515	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1485	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1516	TRANSFER (ta, 1);	1486	TRANSFER (ta, 1);
1517	}	1487	}
1518		1488
…		…
1535		1505
1536	return 0;	1506	return 0;
1537	}	1507	}
1538		1508
1539	static int	1509	static int
1540	api_ready (SV *coro_sv)	1510	api_ready (pTHX_ SV *coro_sv)
1541	{	1511	{
1542	dTHX;
1543	struct coro *coro;	1512	struct coro *coro;
1544	SV *sv_hook;	1513	SV *sv_hook;
1545	void (*xs_hook)(void);	1514	void (*xs_hook)(void);
1546		1515
1547	if (SvROK (coro_sv))	1516	if (SvROK (coro_sv))
…		…
1552	if (coro->flags & CF_READY)	1521	if (coro->flags & CF_READY)
1553	return 0;	1522	return 0;
1554		1523
1555	coro->flags \|= CF_READY;	1524	coro->flags \|= CF_READY;
1556		1525
1557	LOCK;
1558
1559	sv_hook = coro_nready ? 0 : coro_readyhook;	1526	sv_hook = coro_nready ? 0 : coro_readyhook;
1560	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1527	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1561		1528
1562	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));	1529	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1563	++coro_nready;	1530	++coro_nready;
1564		1531
1565	UNLOCK;
1566
1567	if (sv_hook)	1532	if (sv_hook)
1568	{	1533	{
1569	dSP;	1534	dSP;
1570		1535
1571	ENTER;	1536	ENTER;
…		…
1585		1550
1586	return 1;	1551	return 1;
1587	}	1552	}
1588		1553
1589	static int	1554	static int
1590	api_is_ready (SV *coro_sv)	1555	api_is_ready (pTHX_ SV *coro_sv)
1591	{	1556	{
1592	dTHX;
1593
1594	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1557	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595	}	1558	}
1596		1559
1597	INLINE void	1560	INLINE void
1598	prepare_schedule (pTHX_ struct transfer_args *ta)	1561	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1599	{	1562	{
1600	SV prev_sv, next_sv;	1563	SV prev_sv, next_sv;
1601		1564
1602	for (;;)	1565	for (;;)
1603	{	1566	{
1604	LOCK;
1605	next_sv = coro_deq (aTHX);	1567	next_sv = coro_deq (aTHX);
1606		1568
1607	/* nothing to schedule: call the idle handler */	1569	/* nothing to schedule: call the idle handler */
1608	if (expect_false (!next_sv))	1570	if (expect_false (!next_sv))
1609	{	1571	{
1610	dSP;	1572	dSP;
1611	UNLOCK;
1612		1573
1613	ENTER;	1574	ENTER;
1614	SAVETMPS;	1575	SAVETMPS;
1615		1576
1616	PUSHMARK (SP);	1577	PUSHMARK (SP);
…		…
1626	ta->next = SvSTATE (next_sv);	1587	ta->next = SvSTATE (next_sv);
1627		1588
1628	/* cannot transfer to destroyed coros, skip and look for next */	1589	/* cannot transfer to destroyed coros, skip and look for next */
1629	if (expect_false (ta->next->flags & CF_DESTROYED))	1590	if (expect_false (ta->next->flags & CF_DESTROYED))
1630	{	1591	{
1631	UNLOCK;
1632	SvREFCNT_dec (next_sv);	1592	SvREFCNT_dec (next_sv);
1633	/* coro_nready has already been taken care of by destroy */	1593	/* coro_nready has already been taken care of by destroy */
1634	continue;	1594	continue;
1635	}	1595	}
1636		1596
1637	--coro_nready;	1597	--coro_nready;
1638	UNLOCK;
1639	break;	1598	break;
1640	}	1599	}
1641		1600
1642	/* free this only after the transfer */	1601	/* free this only after the transfer */
1643	prev_sv = SvRV (coro_current);	1602	prev_sv = SvRV (coro_current);
…		…
1645	TRANSFER_CHECK (*ta);	1604	TRANSFER_CHECK (*ta);
1646	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));	1605	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1647	ta->next->flags &= ~CF_READY;	1606	ta->next->flags &= ~CF_READY;
1648	SvRV_set (coro_current, next_sv);	1607	SvRV_set (coro_current, next_sv);
1649		1608
1650	LOCK;
1651	free_coro_mortal (aTHX);	1609	free_coro_mortal (aTHX);
1652	coro_mortal = prev_sv;	1610	coro_mortal = prev_sv;
1653	UNLOCK;
1654	}	1611	}
1655		1612
1656	INLINE void	1613	INLINE void
1657	prepare_cede (pTHX_ struct transfer_args *ta)	1614	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1658	{	1615	{
1659	api_ready (coro_current);	1616	api_ready (aTHX_ coro_current);
1660	prepare_schedule (aTHX_ ta);	1617	prepare_schedule (aTHX_ ta);
1661	}	1618	}
1662		1619
1663	static void	1620	INLINE void
1664	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1621	prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1665	{	1622	{
1666	SV *prev = SvRV (coro_current);	1623	SV *prev = SvRV (coro_current);
1667		1624
1668	if (coro_nready)	1625	if (coro_nready)
1669	{	1626	{
1670	prepare_schedule (aTHX_ ta);	1627	prepare_schedule (aTHX_ ta);
1671	api_ready (prev);	1628	api_ready (aTHX_ prev);
1672	}	1629	}
1673	else	1630	else
1674	ta->prev = ta->next = SvSTATE (prev);	1631	prepare_nop (aTHX_ ta);
1675	}	1632	}
1676		1633
1677	static void	1634	static void
1678	api_schedule (void)	1635	api_schedule (pTHX)
1679	{	1636	{
1680	dTHX;
1681	struct transfer_args ta;	1637	struct coro_transfer_args ta;
1682		1638
1683	prepare_schedule (aTHX_ &ta);	1639	prepare_schedule (aTHX_ &ta);
1684	TRANSFER (ta, 1);	1640	TRANSFER (ta, 1);
1685	}	1641	}
1686		1642
1687	static int	1643	static int
1688	api_cede (void)	1644	api_cede (pTHX)
1689	{	1645	{
1690	dTHX;
1691	struct transfer_args ta;	1646	struct coro_transfer_args ta;
1692		1647
1693	prepare_cede (aTHX_ &ta);	1648	prepare_cede (aTHX_ &ta);
1694		1649
1695	if (expect_true (ta.prev != ta.next))	1650	if (expect_true (ta.prev != ta.next))
1696	{	1651	{
…		…
1700	else	1655	else
1701	return 0;	1656	return 0;
1702	}	1657	}
1703		1658
1704	static int	1659	static int
1705	api_cede_notself (void)	1660	api_cede_notself (pTHX)
1706	{	1661	{
1707	if (coro_nready)	1662	if (coro_nready)
1708	{	1663	{
1709	dTHX;
1710	struct transfer_args ta;	1664	struct coro_transfer_args ta;
1711		1665
1712	prepare_cede_notself (aTHX_ &ta);	1666	prepare_cede_notself (aTHX_ &ta);
1713	TRANSFER (ta, 1);	1667	TRANSFER (ta, 1);
1714	return 1;	1668	return 1;
1715	}	1669	}
1716	else	1670	else
1717	return 0;	1671	return 0;
1718	}	1672	}
1719		1673
1720	static void	1674	static void
1721	api_trace (SV *coro_sv, int flags)	1675	api_trace (pTHX_ SV *coro_sv, int flags)
1722	{	1676	{
1723	dTHX;
1724	struct coro *coro = SvSTATE (coro_sv);	1677	struct coro *coro = SvSTATE (coro_sv);
1725		1678
1726	if (flags & CC_TRACE)	1679	if (flags & CC_TRACE)
1727	{	1680	{
1728	if (!coro->cctx)	1681	if (!coro->cctx)
1729	coro->cctx = cctx_new_run ();	1682	coro->cctx = cctx_new_run ();
1730	else if (!(coro->cctx->flags & CC_TRACE))	1683	else if (!(coro->cctx->flags & CC_TRACE))
1731	croak ("cannot enable tracing on coroutine with custom stack");	1684	croak ("cannot enable tracing on coroutine with custom stack,");
1732		1685
1733	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));	1686	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
1734	}	1687	}
1735	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1688	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1736	{	1689	{
…		…
1741	else	1694	else
1742	coro->slot->runops = RUNOPS_DEFAULT;	1695	coro->slot->runops = RUNOPS_DEFAULT;
1743	}	1696	}
1744	}	1697	}
1745		1698
1746	#if 0
1747	static int
1748	coro_gensub_free (pTHX_ SV sv, MAGIC mg)
1749	{
1750	AV *padlist;
1751	AV av = (AV )mg->mg_obj;
1752
1753	abort ();
1754
1755	return 0;
1756	}
1757
1758	static MGVTBL coro_gensub_vtbl = {
1759	0, 0, 0, 0,
1760	coro_gensub_free
1761	};
1762	#endif
1763
1764	/*****************************************************************************/	1699	/*****************************************************************************/
1765	/* PerlIO::cede */	1700	/* PerlIO::cede */
1766		1701
1767	typedef struct	1702	typedef struct
1768	{	1703	{
…		…
1795	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);	1730	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1796	double now = nvtime ();	1731	double now = nvtime ();
1797		1732
1798	if (now >= self->next)	1733	if (now >= self->next)
1799	{	1734	{
1800	api_cede ();	1735	api_cede (aTHX);
1801	self->next = now + self->every;	1736	self->next = now + self->every;
1802	}	1737	}
1803		1738
1804	return PerlIOBuf_flush (aTHX_ f);	1739	return PerlIOBuf_flush (aTHX_ f);
1805	}	1740	}
…		…
1841	static const CV slf_cv; / for quick consistency check */	1776	static const CV slf_cv; / for quick consistency check */
1842		1777
1843	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */	1778	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1844	static SV *slf_arg0;	1779	static SV *slf_arg0;
1845	static SV *slf_arg1;	1780	static SV *slf_arg1;
		1781	static SV *slf_arg2;
1846		1782
1847	/* this restores the stack in the case we patched the entersub, to */	1783	/* this restores the stack in the case we patched the entersub, to */
1848	/* recreate the stack frame as perl will on following calls */	1784	/* recreate the stack frame as perl will on following calls */
1849	/* since entersub cleared the stack */	1785	/* since entersub cleared the stack */
1850	static OP *	1786	static OP *
…		…
1855	PUSHMARK (SP);	1791	PUSHMARK (SP);
1856		1792
1857	EXTEND (SP, 3);	1793	EXTEND (SP, 3);
1858	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));	1794	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1859	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));	1795	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
		1796	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1860	PUSHs ((SV *)CvGV (slf_cv));	1797	PUSHs ((SV *)CvGV (slf_cv));
1861		1798
1862	RETURNOP (slf_restore.op_first);	1799	RETURNOP (slf_restore.op_first);
1863	}	1800	}
1864		1801
1865	#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */	1802	static void
		1803	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
		1804	{
		1805	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
		1806	}
1866		1807
1867	/* declare prototype */	1808	static void
1868	XS(XS_Coro__State__set_stacklevel);	1809	slf_init_set_stacklevel (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1810	{
		1811	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
		1812
		1813	frame->prepare = slf_prepare_set_stacklevel;
		1814	frame->check = slf_check_nop;
		1815	frame->data = (void *)SvIV (arg [0]);
		1816	}
		1817
		1818	static void
		1819	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
		1820	{
		1821	SV arg = (SV )slf_frame.data;
		1822
		1823	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		1824	}
		1825
		1826	static void
		1827	slf_init_transfer (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1828	{
		1829	if (items != 2)
		1830	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
		1831
		1832	frame->prepare = slf_prepare_transfer;
		1833	frame->check = slf_check_nop;
		1834	frame->data = (void )arg; / let's hope it will stay valid */
		1835	}
		1836
		1837	static void
		1838	slf_init_schedule (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1839	{
		1840	frame->prepare = prepare_schedule;
		1841	frame->check = slf_check_nop;
		1842	}
		1843
		1844	static void
		1845	slf_init_cede (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1846	{
		1847	frame->prepare = prepare_cede;
		1848	frame->check = slf_check_nop;
		1849	}
		1850
		1851	static void
		1852	slf_init_cede_notself (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1853	{
		1854	frame->prepare = prepare_cede_notself;
		1855	frame->check = slf_check_nop;
		1856	}
		1857
		1858	/* we hijack an hopefully unused CV flag for our purposes */
		1859	#define CVf_SLF 0x4000
1869		1860
1870	/*	1861	/*
1871	* these not obviously related functions are all rolled into one	1862	* these not obviously related functions are all rolled into one
1872	* function to increase chances that they all will call transfer with the same	1863	* function to increase chances that they all will call transfer with the same
1873	* stack offset	1864	* stack offset
1874	* SLF stands for "schedule-like-function".	1865	* SLF stands for "schedule-like-function".
1875	*/	1866	*/
1876	static OP *	1867	static OP *
1877	pp_slf (pTHX)	1868	pp_slf (pTHX)
1878	{	1869	{
		1870	I32 checkmark; /* mark SP to see how many elements check has pushed */
		1871
		1872	/* set up the slf frame, unless it has already been set-up */
		1873	/* the latter happens when a new coro has been started */
		1874	/* or when a new cctx was attached to an existing coroutine */
		1875	if (expect_true (!slf_frame.prepare))
		1876	{
		1877	/* first iteration */
1879	dSP;	1878	dSP;
1880	struct transfer_args ta;
1881	SV **arg = PL_stack_base + TOPMARK + 1;	1879	SV **arg = PL_stack_base + TOPMARK + 1;
1882	int items = SP - arg; /* args without function object */	1880	int items = SP - arg; /* args without function object */
		1881	SV gv = sp;
1883		1882
1884	/* do a quick consistency check on the "function" object, and if it isn't */	1883	/* do a quick consistency check on the "function" object, and if it isn't */
1885	/* for us, divert to the real entersub */	1884	/* for us, divert to the real entersub */
1886	if (SvTYPE (sp) != SVt_PVGV \|\| CvXSUB (GvCV (sp)) != XS_Coro__State__set_stacklevel)	1885	if (SvTYPE (gv) != SVt_PVGV \|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1887	return PL_ppaddr[OP_ENTERSUB](aTHX);	1886	return PL_ppaddr[OP_ENTERSUB](aTHX);
1888		1887
1889	/* pop args */	1888	/* pop args */
1890	SP = PL_stack_base + POPMARK;	1889	SP = PL_stack_base + POPMARK;
1891		1890
1892	if (!(PL_op->op_flags & OPf_STACKED))	1891	if (!(PL_op->op_flags & OPf_STACKED))
1893	{	1892	{
1894	/* ampersand-form of call, use @_ instead of stack */	1893	/* ampersand-form of call, use @_ instead of stack */
1895	AV *av = GvAV (PL_defgv);	1894	AV *av = GvAV (PL_defgv);
1896	arg = AvARRAY (av);	1895	arg = AvARRAY (av);
1897	items = AvFILLp (av) + 1;	1896	items = AvFILLp (av) + 1;
		1897	}
		1898
		1899	PUTBACK;
		1900
		1901	/* now call the init function, which needs to set up slf_frame */
		1902	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
		1903	(aTHX_ &slf_frame, GvCV (gv), arg, items);
		1904	}
		1905
		1906	/* now that we have a slf_frame, interpret it! */
		1907	/* we use a callback system not to make the code needlessly */
		1908	/* complicated, but so we can run multiple perl coros from one cctx */
		1909
		1910	do
		1911	{
		1912	struct coro_transfer_args ta;
		1913
		1914	slf_frame.prepare (aTHX_ &ta);
		1915	TRANSFER (ta, 0);
		1916
		1917	checkmark = PL_stack_sp - PL_stack_base;
		1918	}
		1919	while (slf_frame.check (aTHX_ &slf_frame));
		1920
		1921	{
		1922	dSP;
		1923	SV **bot = PL_stack_base + checkmark;
		1924	int gimme = GIMME_V;
		1925
		1926	slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
		1927
		1928	/* make sure we put something on the stack in scalar context */
		1929	if (gimme == G_SCALAR)
		1930	{
		1931	if (sp == bot)
		1932	XPUSHs (&PL_sv_undef);
		1933
		1934	SP = bot + 1;
1898	}	1935	}
1899		1936
1900	PUTBACK;	1937	PUTBACK;
1901	switch (PL_op->op_private & OPpENTERSUB_SLF)
1902	{
1903	case 0:
1904	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1905	break;
1906
1907	case 1:
1908	if (items != 2)
1909	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1910
1911	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1912	break;
1913
1914	case 2:
1915	prepare_schedule (aTHX_ &ta);
1916	break;
1917
1918	case 3:
1919	prepare_cede (aTHX_ &ta);
1920	break;
1921
1922	case 4:
1923	prepare_cede_notself (aTHX_ &ta);
1924	break;
1925
1926	case 5:
1927	abort ();
1928
1929	default:
1930	abort ();
1931	}	1938	}
1932		1939
1933	TRANSFER (ta, 0);	1940	return NORMAL;
1934	SPAGAIN;
1935
1936	PUTBACK;
1937	SLF_TAIL;
1938	SPAGAIN;
1939	RETURN;
1940	}	1941	}
1941		1942
1942	static void	1943	static void
1943	coro_slf_patch (pTHX_ CV cv, int ix, SV *args, int items)	1944	api_execute_slf (pTHX_ CV cv, coro_slf_cb init_cb, SV *arg, int items)
1944	{	1945	{
1945	assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));
1946
1947	assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));	1946	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
		1947
		1948	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		1949	&& PL_op->op_ppaddr != pp_slf)
		1950	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		1951
		1952	if (items > 3)
		1953	croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
		1954
		1955	CvFLAGS (cv) \|= CVf_SLF;
		1956	CvXSUBANY (cv).any_ptr = (void *)init_cb;
1948	slf_cv = cv;	1957	slf_cv = cv;
1949		1958
1950	/* we patch the op, and then re-run the whole call */	1959	/* we patch the op, and then re-run the whole call */
1951	/* we have to put the same argument on the stack for this to work */	1960	/* we have to put the same argument on the stack for this to work */
1952	/* and this will be done by pp_restore */	1961	/* and this will be done by pp_restore */
1953	slf_restore.op_next = (OP *)&slf_restore;	1962	slf_restore.op_next = (OP *)&slf_restore;
1954	slf_restore.op_type = OP_NULL;	1963	slf_restore.op_type = OP_CUSTOM;
1955	slf_restore.op_ppaddr = pp_restore;	1964	slf_restore.op_ppaddr = pp_restore;
1956	slf_restore.op_first = PL_op;	1965	slf_restore.op_first = PL_op;
1957		1966
1958	slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;	1967	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1959	slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;	1968	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
		1969	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1960		1970
1961	PL_op->op_ppaddr = pp_slf;	1971	PL_op->op_ppaddr = pp_slf;
1962	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF \| ix; /* we potentially share our private flags with entersub */
1963		1972
1964	PL_op = (OP *)&slf_restore;	1973	PL_op = (OP *)&slf_restore;
1965	}	1974	}
		1975
		1976	/*****************************************************************************/
		1977
		1978	static void
		1979	coro_semaphore_adjust (AV *av, int adjust)
		1980	{
		1981	SV *count_sv = AvARRAY (av)[0];
		1982	IV count = SvIVX (count_sv);
		1983
		1984	count += adjust;
		1985	SvIVX (count_sv) = count;
		1986
		1987	/* now wake up as many waiters as possible */
		1988	while (count > 0 && AvFILLp (av) >= count)
		1989	{
		1990	SV *cb;
		1991
		1992	/* swap first two elements so we can shift a waiter */
		1993	AvARRAY (av)[0] = AvARRAY (av)[1];
		1994	AvARRAY (av)[1] = count_sv;
		1995	cb = av_shift (av);
		1996
		1997	if (SvOBJECT (cb))
		1998	api_ready (aTHX_ cb);
		1999	else
		2000	croak ("callbacks not yet supported");
		2001
		2002	SvREFCNT_dec (cb);
		2003
		2004	--count;
		2005	}
		2006	}
		2007
		2008	static void
		2009	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
		2010	{
		2011	/* call $sem->adjust (0) to possibly wake up some waiters */
		2012	coro_semaphore_adjust ((AV *)coro->slf_frame.data, 0);
		2013	}
		2014
		2015	static int
		2016	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2017	{
		2018	AV av = (AV )frame->data;
		2019	SV *count_sv = AvARRAY (av)[0];
		2020
		2021	if (SvIVX (count_sv) > 0)
		2022	{
		2023	SvSTATE (coro_current)->on_destroy = 0;
		2024	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2025	return 0;
		2026	}
		2027	else
		2028	{
		2029	int i;
		2030	/* if we were woken up but can't down, we look through the whole */
		2031	/* waiters list and only add us if we aren't in there already */
		2032	/* this avoids some degenerate memory usage cases */
		2033
		2034	for (i = 1; i <= AvFILLp (av); ++i)
		2035	if (AvARRAY (av)[i] == SvRV (coro_current))
		2036	return 1;
		2037
		2038	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2039	return 1;
		2040	}
		2041	}
		2042
		2043	static void
		2044	slf_init_semaphore_down (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2045	{
		2046	AV av = (AV )SvRV (arg [0]);
		2047
		2048	if (SvIVX (AvARRAY (av)[0]) > 0)
		2049	{
		2050	frame->data = (void *)av;
		2051	frame->prepare = prepare_nop;
		2052	}
		2053	else
		2054	{
		2055	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2056
		2057	frame->data = (void )sv_2mortal (SvREFCNT_inc ((SV )av));
		2058	frame->prepare = prepare_schedule;
		2059
		2060	/* to avoid race conditions when a woken-up coro gets terminated */
		2061	/* we arrange for a temporary on_destroy that calls adjust (0) */
		2062	SvSTATE (coro_current)->on_destroy = coro_semaphore_on_destroy;
		2063	}
		2064
		2065	frame->check = slf_check_semaphore_down;
		2066
		2067	}
		2068
		2069	/*****************************************************************************/
		2070
		2071	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		2072
		2073	/* create a closure from XS, returns a code reference */
		2074	/* the arg can be accessed via GENSUB_ARG from the callback */
		2075	/* the callback must use dXSARGS/XSRETURN */
		2076	static SV *
		2077	gensub (pTHX_ void (xsub)(pTHX_ CV ), void *arg)
		2078	{
		2079	CV cv = (CV )NEWSV (0, 0);
		2080
		2081	sv_upgrade ((SV *)cv, SVt_PVCV);
		2082
		2083	CvANON_on (cv);
		2084	CvISXSUB_on (cv);
		2085	CvXSUB (cv) = xsub;
		2086	GENSUB_ARG = arg;
		2087
		2088	return newRV_noinc ((SV *)cv);
		2089	}
		2090
		2091	/*****************************************************************************/
1966		2092
1967	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2093	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1968		2094
1969	PROTOTYPES: DISABLE	2095	PROTOTYPES: DISABLE
1970		2096
…		…
2000	main_top_env = PL_top_env;	2126	main_top_env = PL_top_env;
2001		2127
2002	while (main_top_env->je_prev)	2128	while (main_top_env->je_prev)
2003	main_top_env = main_top_env->je_prev;	2129	main_top_env = main_top_env->je_prev;
2004		2130
		2131	{
		2132	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
		2133
		2134	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
		2135	hv_store_ent (PL_custom_op_names, slf,
		2136	newSVpv ("coro_slf", 0), 0);
		2137
		2138	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
		2139	hv_store_ent (PL_custom_op_descs, slf,
		2140	newSVpv ("coro schedule like function", 0), 0);
		2141	}
		2142
2005	coroapi.ver = CORO_API_VERSION;	2143	coroapi.ver = CORO_API_VERSION;
2006	coroapi.rev = CORO_API_REVISION;	2144	coroapi.rev = CORO_API_REVISION;
		2145
2007	coroapi.transfer = api_transfer;	2146	coroapi.transfer = api_transfer;
		2147
		2148	coroapi.sv_state = SvSTATE_;
		2149	coroapi.execute_slf = api_execute_slf;
		2150	coroapi.prepare_nop = prepare_nop;
		2151	coroapi.prepare_schedule = prepare_schedule;
		2152	coroapi.prepare_cede = prepare_cede;
		2153	coroapi.prepare_cede_notself = prepare_cede_notself;
2008		2154
2009	{	2155	{
2010	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	2156	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2011		2157
2012	if (!svp) croak ("Time::HiRes is required");	2158	if (!svp) croak ("Time::HiRes is required");
…		…
2047	OUTPUT:	2193	OUTPUT:
2048	RETVAL	2194	RETVAL
2049		2195
2050	void	2196	void
2051	_set_stacklevel (...)	2197	_set_stacklevel (...)
2052	ALIAS:	2198	CODE:
2053	Coro::State::transfer = 1	2199	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2054	Coro::schedule = 2	2200
2055	Coro::cede = 3	2201	void
2056	Coro::cede_notself = 4	2202	transfer (...)
2057	CODE:	2203	PROTOTYPE: $$
2058	coro_slf_patch (aTHX_ cv, ix, &ST (0), items);	2204	CODE:
		2205	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
2059		2206
2060	bool	2207	bool
2061	_destroy (SV *coro_sv)	2208	_destroy (SV *coro_sv)
2062	CODE:	2209	CODE:
2063	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2210	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2070	CODE:	2217	CODE:
2071	_exit (code);	2218	_exit (code);
2072		2219
2073	int	2220	int
2074	cctx_stacksize (int new_stacksize = 0)	2221	cctx_stacksize (int new_stacksize = 0)
		2222	PROTOTYPE: ;$
2075	CODE:	2223	CODE:
2076	RETVAL = cctx_stacksize;	2224	RETVAL = cctx_stacksize;
2077	if (new_stacksize)	2225	if (new_stacksize)
2078	{	2226	{
2079	cctx_stacksize = new_stacksize;	2227	cctx_stacksize = new_stacksize;
…		…
2082	OUTPUT:	2230	OUTPUT:
2083	RETVAL	2231	RETVAL
2084		2232
2085	int	2233	int
2086	cctx_max_idle (int max_idle = 0)	2234	cctx_max_idle (int max_idle = 0)
		2235	PROTOTYPE: ;$
2087	CODE:	2236	CODE:
2088	RETVAL = cctx_max_idle;	2237	RETVAL = cctx_max_idle;
2089	if (max_idle > 1)	2238	if (max_idle > 1)
2090	cctx_max_idle = max_idle;	2239	cctx_max_idle = max_idle;
2091	OUTPUT:	2240	OUTPUT:
2092	RETVAL	2241	RETVAL
2093		2242
2094	int	2243	int
2095	cctx_count ()	2244	cctx_count ()
		2245	PROTOTYPE:
2096	CODE:	2246	CODE:
2097	RETVAL = cctx_count;	2247	RETVAL = cctx_count;
2098	OUTPUT:	2248	OUTPUT:
2099	RETVAL	2249	RETVAL
2100		2250
2101	int	2251	int
2102	cctx_idle ()	2252	cctx_idle ()
		2253	PROTOTYPE:
2103	CODE:	2254	CODE:
2104	RETVAL = cctx_idle;	2255	RETVAL = cctx_idle;
2105	OUTPUT:	2256	OUTPUT:
2106	RETVAL	2257	RETVAL
2107		2258
2108	void	2259	void
2109	list ()	2260	list ()
		2261	PROTOTYPE:
2110	PPCODE:	2262	PPCODE:
2111	{	2263	{
2112	struct coro *coro;	2264	struct coro *coro;
2113	for (coro = coro_first; coro; coro = coro->next)	2265	for (coro = coro_first; coro; coro = coro->next)
2114	if (coro->hv)	2266	if (coro->hv)
…		…
2181	SvREFCNT_dec (self->throw);	2333	SvREFCNT_dec (self->throw);
2182	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2334	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2183		2335
2184	void	2336	void
2185	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	2337	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		2338	PROTOTYPE: $;$
		2339	C_ARGS: aTHX_ coro, flags
2186		2340
2187	SV *	2341	SV *
2188	has_cctx (Coro::State coro)	2342	has_cctx (Coro::State coro)
2189	PROTOTYPE: $	2343	PROTOTYPE: $
2190	CODE:	2344	CODE:
…		…
2214	OUTPUT:	2368	OUTPUT:
2215	RETVAL	2369	RETVAL
2216		2370
2217	void	2371	void
2218	force_cctx ()	2372	force_cctx ()
		2373	PROTOTYPE:
2219	CODE:	2374	CODE:
2220	struct coro *coro = SvSTATE (coro_current);	2375	struct coro *coro = SvSTATE (coro_current);
2221	coro->cctx->idle_sp = 0;	2376	coro->cctx->idle_sp = 0;
2222		2377
2223	void	2378	void
…		…
2225	PROTOTYPE: $	2380	PROTOTYPE: $
2226	ALIAS:	2381	ALIAS:
2227	swap_defav = 1	2382	swap_defav = 1
2228	CODE:	2383	CODE:
2229	if (!self->slot)	2384	if (!self->slot)
2230	croak ("cannot swap state with coroutine that has no saved state");	2385	croak ("cannot swap state with coroutine that has no saved state,");
2231	else	2386	else
2232	{	2387	{
2233	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);	2388	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
2234	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;	2389	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
2235		2390
…		…
2267	coroapi.schedule = api_schedule;	2422	coroapi.schedule = api_schedule;
2268	coroapi.cede = api_cede;	2423	coroapi.cede = api_cede;
2269	coroapi.cede_notself = api_cede_notself;	2424	coroapi.cede_notself = api_cede_notself;
2270	coroapi.ready = api_ready;	2425	coroapi.ready = api_ready;
2271	coroapi.is_ready = api_is_ready;	2426	coroapi.is_ready = api_is_ready;
2272	coroapi.nready = &coro_nready;	2427	coroapi.nready = coro_nready;
2273	coroapi.current = coro_current;	2428	coroapi.current = coro_current;
2274		2429
2275	GCoroAPI = &coroapi;	2430	GCoroAPI = &coroapi;
2276	sv_setiv (sv, (IV)&coroapi);	2431	sv_setiv (sv, (IV)&coroapi);
2277	SvREADONLY_on (sv);	2432	SvREADONLY_on (sv);
2278	}	2433	}
2279	}	2434	}
		2435
		2436	void
		2437	schedule (...)
		2438	CODE:
		2439	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
		2440
		2441	void
		2442	cede (...)
		2443	CODE:
		2444	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
		2445
		2446	void
		2447	cede_notself (...)
		2448	CODE:
		2449	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
2280		2450
2281	void	2451	void
2282	_set_current (SV *current)	2452	_set_current (SV *current)
2283	PROTOTYPE: $	2453	PROTOTYPE: $
2284	CODE:	2454	CODE:
…		…
2287		2457
2288	void	2458	void
2289	_set_readyhook (SV *hook)	2459	_set_readyhook (SV *hook)
2290	PROTOTYPE: $	2460	PROTOTYPE: $
2291	CODE:	2461	CODE:
2292	LOCK;
2293	SvREFCNT_dec (coro_readyhook);	2462	SvREFCNT_dec (coro_readyhook);
2294	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	2463	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2295	UNLOCK;
2296		2464
2297	int	2465	int
2298	prio (Coro::State coro, int newprio = 0)	2466	prio (Coro::State coro, int newprio = 0)
		2467	PROTOTYPE: $;$
2299	ALIAS:	2468	ALIAS:
2300	nice = 1	2469	nice = 1
2301	CODE:	2470	CODE:
2302	{	2471	{
2303	RETVAL = coro->prio;	2472	RETVAL = coro->prio;
…		…
2318		2487
2319	SV *	2488	SV *
2320	ready (SV *self)	2489	ready (SV *self)
2321	PROTOTYPE: $	2490	PROTOTYPE: $
2322	CODE:	2491	CODE:
2323	RETVAL = boolSV (api_ready (self));	2492	RETVAL = boolSV (api_ready (aTHX_ self));
2324	OUTPUT:	2493	OUTPUT:
2325	RETVAL	2494	RETVAL
2326		2495
2327	int	2496	int
2328	nready (...)	2497	nready (...)
…		…
2367	{	2536	{
2368	av_fill (defav, len - 1);	2537	av_fill (defav, len - 1);
2369	for (i = 0; i < len; ++i)	2538	for (i = 0; i < len; ++i)
2370	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	2539	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2371	}	2540	}
2372
2373	SvREFCNT_dec (invoke);
2374	}	2541	}
2375		2542
2376	void	2543	void
2377	_pool_2 (SV *cb)	2544	_pool_2 (SV *cb)
2378	CODE:	2545	CODE:
…		…
2398	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2565	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2399		2566
2400	coro->prio = 0;	2567	coro->prio = 0;
2401		2568
2402	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2569	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2403	api_trace (coro_current, 0);	2570	api_trace (aTHX_ coro_current, 0);
2404		2571
2405	av_push (av_async_pool, newSVsv (coro_current));	2572	av_push (av_async_pool, newSVsv (coro_current));
2406	}	2573	}
2407
2408	#if 0
2409
2410	void
2411	_generator_call (...)
2412	PROTOTYPE: @
2413	PPCODE:
2414	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2415	xxxx
2416	abort ();
2417
2418	SV *
2419	gensub (SV *sub, ...)
2420	PROTOTYPE: &;@
2421	CODE:
2422	{
2423	struct coro *coro;
2424	MAGIC *mg;
2425	CV *xcv;
2426	CV ncv = (CV )newSV_type (SVt_PVCV);
2427	int i;
2428
2429	CvGV (ncv) = CvGV (cv);
2430	CvFILE (ncv) = CvFILE (cv);
2431
2432	Newz (0, coro, 1, struct coro);
2433	coro->args = newAV ();
2434	coro->flags = CF_NEW;
2435
2436	av_extend (coro->args, items - 1);
2437	for (i = 1; i < items; i++)
2438	av_push (coro->args, newSVsv (ST (i)));
2439
2440	CvISXSUB_on (ncv);
2441	CvXSUBANY (ncv).any_ptr = (void *)coro;
2442
2443	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2444
2445	CvXSUB (ncv) = CvXSUB (xcv);
2446	CvANON_on (ncv);
2447
2448	mg = sv_magicext ((SV )ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char )coro, 0);
2449	RETVAL = newRV_noinc ((SV *)ncv);
2450	}
2451	OUTPUT:
2452	RETVAL
2453
2454	#endif
2455		2574
2456		2575
2457	MODULE = Coro::State PACKAGE = Coro::AIO	2576	MODULE = Coro::State PACKAGE = Coro::AIO
2458		2577
2459	void	2578	void
2460	_get_state (SV *self)	2579	_get_state (SV *self)
		2580	PROTOTYPE: $
2461	PPCODE:	2581	PPCODE:
2462	{	2582	{
2463	AV *defav = GvAV (PL_defgv);	2583	AV *defav = GvAV (PL_defgv);
2464	AV *av = newAV ();	2584	AV *av = newAV ();
2465	int i;	2585	int i;
…		…
2480		2600
2481	av_push (av, data_sv);	2601	av_push (av, data_sv);
2482		2602
2483	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	2603	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2484		2604
2485	api_ready (self);	2605	api_ready (aTHX_ self);
2486	}	2606	}
2487		2607
2488	void	2608	void
2489	_set_state (SV *state)	2609	_set_state (SV *state)
2490	PROTOTYPE: $	2610	PROTOTYPE: $
…		…
2508	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2628	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2509		2629
2510	BOOT:	2630	BOOT:
2511	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	2631	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2512		2632
2513	SV *	2633	void
2514	_schedule (...)	2634	_schedule (...)
2515	PROTOTYPE: @
2516	CODE:	2635	CODE:
2517	{	2636	{
2518	static int incede;	2637	static int incede;
2519		2638
2520	api_cede_notself ();	2639	api_cede_notself (aTHX);
2521		2640
2522	++incede;	2641	++incede;
2523	while (coro_nready >= incede && api_cede ())	2642	while (coro_nready >= incede && api_cede (aTHX))
2524	;	2643	;
2525		2644
2526	sv_setsv (sv_activity, &PL_sv_undef);	2645	sv_setsv (sv_activity, &PL_sv_undef);
2527	if (coro_nready >= incede)	2646	if (coro_nready >= incede)
2528	{	2647	{
…		…
2539	MODULE = Coro::State PACKAGE = PerlIO::cede	2658	MODULE = Coro::State PACKAGE = PerlIO::cede
2540		2659
2541	BOOT:	2660	BOOT:
2542	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2661	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2543		2662
		2663	MODULE = Coro::State PACKAGE = Coro::Semaphore
		2664
		2665	SV *
		2666	new (SV klass, SV count_ = 0)
		2667	CODE:
		2668	{
		2669	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2670	AV *av = newAV ();
		2671	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
		2672	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
		2673	}
		2674	OUTPUT:
		2675	RETVAL
		2676
		2677	SV *
		2678	count (SV *self)
		2679	CODE:
		2680	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
		2681	OUTPUT:
		2682	RETVAL
		2683
		2684	void
		2685	up (SV *self, int adjust = 1)
		2686	ALIAS:
		2687	adjust = 1
		2688	CODE:
		2689	coro_semaphore_adjust ((AV *)SvRV (self), ix ? adjust : 1);
		2690
		2691	void
		2692	down (SV *self)
		2693	CODE:
		2694	api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
		2695
		2696	void
		2697	try (SV *self)
		2698	PPCODE:
		2699	{
		2700	AV av = (AV )SvRV (self);
		2701	SV *count_sv = AvARRAY (av)[0];
		2702	IV count = SvIVX (count_sv);
		2703
		2704	if (count > 0)
		2705	{
		2706	--count;
		2707	SvIVX (count_sv) = count;
		2708	XSRETURN_YES;
		2709	}
		2710	else
		2711	XSRETURN_NO;
		2712	}
		2713
		2714	void
		2715	waiters (SV *self)
		2716	CODE:
		2717	{
		2718	AV av = (AV )SvRV (self);
		2719
		2720	if (GIMME_V == G_SCALAR)
		2721	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
		2722	else
		2723	{
		2724	int i;
		2725	EXTEND (SP, AvFILLp (av) + 1 - 1);
		2726	for (i = 1; i <= AvFILLp (av); ++i)
		2727	PUSHs (newSVsv (AvARRAY (av)[i]));
		2728	}
		2729	}
		2730

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Comparing Coro/Coro/State.xs (file contents): Revision 1.269 by root, Fri Nov 14 06:50:11 2008 UTC vs. Revision 1.280 by root, Sun Nov 16 09:43:18 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.269 by root, Fri Nov 14 06:50:11 2008 UTC vs.
Revision 1.280 by root, Sun Nov 16 09:43:18 2008 UTC