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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.272 by root, Fri Nov 14 20:35:49 2008 UTC vs.
Revision 1.283 by root, Sun Nov 16 11:12:57 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;
…		…
181	static struct CoroAPI coroapi;	166	static struct CoroAPI coroapi;
182	static AV main_mainstack; / used to differentiate between $main and others */	167	static AV main_mainstack; / used to differentiate between $main and others */
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;
187		171
188	static GV irsgv; / $/ */	172	static GV irsgv; / $/ */
189	static GV stdoutgv; / STDOUT /	173	static GV stdoutgv; / STDOUT /
190	static SV *rv_diehook;	174	static SV *rv_diehook;
191	static SV *rv_warnhook;	175	static SV *rv_warnhook;
…		…
252	#undef VAR	236	#undef VAR
253	} perl_slots;	237	} perl_slots;
254		238
255	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	239	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256		240
257	/* this is the per-perl-coro slf frame info */
258	/* it is treated like other "global" interpreter data */
259	/* and unfortunately is copied around, so kepe it small */
260	struct slf_frame
261	{
262	void (prepare) (struct coro_transfer_args ta); /* 0 means not yet initialised */
263	int (*check) (pTHX);
264	};
265
266	/* this is a structure representing a perl-level coroutine */	241	/* this is a structure representing a perl-level coroutine */
267	struct coro {	242	struct coro {
268	/* the C coroutine allocated to this perl coroutine, if any */	243	/* the C coroutine allocated to this perl coroutine, if any */
269	coro_cctx *cctx;	244	coro_cctx *cctx;
270		245
271	/* process data */	246	/* process data */
272	struct slf_frame slf_frame; /* saved slf frame */	247	struct CoroSLF slf_frame; /* saved slf frame */
273	void *slf_data;
274	AV *mainstack;	248	AV *mainstack;
275	perl_slots slot; / basically the saved sp */	249	perl_slots slot; / basically the saved sp */
276		250
277	AV args; / data associated with this coroutine (initial args) */	251	AV args; / data associated with this coroutine (initial args) */
278	int refcnt; /* coroutines are refcounted, yes */	252	int refcnt; /* coroutines are refcounted, yes */
279	int flags; /* CF_ flags */	253	int flags; /* CF_ flags */
280	HV hv; / the perl hash associated with this coro, if any */	254	HV hv; / the perl hash associated with this coro, if any */
		255	void (on_destroy)(pTHX_ struct coro coro);
281		256
282	/* statistics */	257	/* statistics */
283	int usecount; /* number of transfers to this coro */	258	int usecount; /* number of transfers to this coro */
284		259
285	/* coro process data */	260	/* coro process data */
…		…
294	};	269	};
295		270
296	typedef struct coro *Coro__State;	271	typedef struct coro *Coro__State;
297	typedef struct coro *Coro__State_or_hashref;	272	typedef struct coro *Coro__State_or_hashref;
298		273
299	static struct slf_frame slf_frame; /* the current slf frame */	274	static struct CoroSLF slf_frame; /* the current slf frame */
300		275
301	/ Coro ******************************************************************/	276	/ Coro ******************************************************************/
302		277
303	#define PRIO_MAX 3	278	#define PRIO_MAX 3
304	#define PRIO_HIGH 1	279	#define PRIO_HIGH 1
…		…
413	static MGVTBL coro_cv_vtbl = {	388	static MGVTBL coro_cv_vtbl = {
414	0, 0, 0, 0,	389	0, 0, 0, 0,
415	coro_cv_free	390	coro_cv_free
416	};	391	};
417		392
418	#define CORO_MAGIC(sv, type) \	393	#define CORO_MAGIC(sv, type) \
419	SvMAGIC (sv) \	394	expect_true (SvMAGIC (sv)) \
420	? SvMAGIC (sv)->mg_type == type \	395	? expect_true (SvMAGIC (sv)->mg_type == type) \
421	? SvMAGIC (sv) \	396	? SvMAGIC (sv) \
422	: mg_find (sv, type) \	397	: mg_find (sv, type) \
423	: 0	398	: 0
424		399
425	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	400	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
426	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	401	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
427		402
…		…
448	mg = CORO_MAGIC_state (coro);	423	mg = CORO_MAGIC_state (coro);
449	return (struct coro *)mg->mg_ptr;	424	return (struct coro *)mg->mg_ptr;
450	}	425	}
451		426
452	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	427	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		428
		429	/* fastert than SvSTATE, but expects a coroutine hv */
		430	INLINE struct coro *
		431	SvSTATE_hv (SV *sv)
		432	{
		433	MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
		434	? SvMAGIC (sv)
		435	: mg_find (sv, CORO_MAGIC_type_state);
		436
		437	return (struct coro *)mg->mg_ptr;
		438	}
		439
		440	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
453		441
454	/* the next two functions merely cache the padlists */	442	/* the next two functions merely cache the padlists */
455	static void	443	static void
456	get_padlist (pTHX_ CV *cv)	444	get_padlist (pTHX_ CV *cv)
457	{	445	{
…		…
526		514
527	PUTBACK;	515	PUTBACK;
528	}	516	}
529		517
530	slf_frame = c->slf_frame;	518	slf_frame = c->slf_frame;
531	coroapi.slf_data = c->slf_data;
532	}	519	}
533		520
534	static void	521	static void
535	save_perl (pTHX_ Coro__State c)	522	save_perl (pTHX_ Coro__State c)
536	{	523	{
537	c->slf_data = coroapi.slf_data;
538	c->slf_frame = slf_frame;	524	c->slf_frame = slf_frame;
539		525
540	{	526	{
541	dSP;	527	dSP;
542	I32 cxix = cxstack_ix;	528	I32 cxix = cxstack_ix;
…		…
823		809
824	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;	810	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825	}	811	}
826		812
827	static void	813	static void
828	prepare_nop (aTHX_ struct coro_transfer_args *ta)	814	prepare_nop (pTHX_ struct coro_transfer_args *ta)
829	{	815	{
830	/* kind of mega-hacky, but works */	816	/* kind of mega-hacky, but works */
831	ta->next = ta->prev = (struct coro *)ta;	817	ta->next = ta->prev = (struct coro *)ta;
832	}	818	}
833		819
834	static int	820	static int
835	slf_check_nop (aTHX)	821	slf_check_nop (pTHX_ struct CoroSLF *frame)
836	{	822	{
837	return 0;	823	return 0;
838	}	824	}
839		825
840	static void	826	static void
…		…
941	static int	927	static int
942	runops_trace (pTHX)	928	runops_trace (pTHX)
943	{	929	{
944	COP *oldcop = 0;	930	COP *oldcop = 0;
945	int oldcxix = -2;	931	int oldcxix = -2;
946	struct coro coro = SvSTATE (coro_current); / trace cctx is tied to specific coro */	932	struct coro coro = SvSTATE_current; / trace cctx is tied to specific coro */
947	coro_cctx *cctx = coro->cctx;	933	coro_cctx *cctx = coro->cctx;
948		934
949	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	935	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950	{	936	{
951	PERL_ASYNC_CHECK ();	937	PERL_ASYNC_CHECK ();
…		…
1100		1086
1101	/* the tail of transfer: execute stuff we can only do after a transfer */	1087	/* the tail of transfer: execute stuff we can only do after a transfer */
1102	INLINE void	1088	INLINE void
1103	transfer_tail (pTHX)	1089	transfer_tail (pTHX)
1104	{	1090	{
1105	struct coro next = (struct coro )transfer_next;
1106	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1107	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1108
1109	free_coro_mortal (aTHX);	1091	free_coro_mortal (aTHX);
1110	UNLOCK;
1111
1112	if (expect_false (next->throw))
1113	{
1114	SV *exception = sv_2mortal (next->throw);
1115
1116	next->throw = 0;
1117	sv_setsv (ERRSV, exception);
1118	croak (0);
1119	}
1120	}	1092	}
1121		1093
1122	/*	1094	/*
1123	* this is a _very_ stripped down perl interpreter ;)	1095	* this is a _very_ stripped down perl interpreter ;)
1124	*/	1096	*/
…		…
1139		1111
1140	/* inject a fake subroutine call to cctx_init */	1112	/* inject a fake subroutine call to cctx_init */
1141	cctx_prepare (aTHX_ (coro_cctx *)arg);	1113	cctx_prepare (aTHX_ (coro_cctx *)arg);
1142		1114
1143	/* cctx_run is the alternative tail of transfer() */	1115	/* cctx_run is the alternative tail of transfer() */
1144	/* TODO: throwing an exception here might be deadly, VERIFY */
1145	transfer_tail (aTHX);	1116	transfer_tail (aTHX);
1146		1117
1147	/* somebody or something will hit me for both perl_run and PL_restartop */	1118	/* somebody or something will hit me for both perl_run and PL_restartop */
1148	PL_restartop = PL_op;	1119	PL_restartop = PL_op;
1149	perl_run (PL_curinterp);	1120	perl_run (PL_curinterp);
…		…
1308	transfer_check (pTHX_ struct coro prev, struct coro next)	1279	transfer_check (pTHX_ struct coro prev, struct coro next)
1309	{	1280	{
1310	if (expect_true (prev != next))	1281	if (expect_true (prev != next))
1311	{	1282	{
1312	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))	1283	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");	1284	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1314		1285
1315	if (expect_false (next->flags & CF_RUNNING))	1286	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");	1287	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1317		1288
1318	if (expect_false (next->flags & CF_DESTROYED))	1289	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");	1290	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1320		1291
1321	#if !PERL_VERSION_ATLEAST (5,10,0)	1292	#if !PERL_VERSION_ATLEAST (5,10,0)
1322	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1293	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");	1294	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324	#endif	1295	#endif
1325	}	1296	}
1326	}	1297	}
1327		1298
1328	/* always use the TRANSFER macro */	1299	/* always use the TRANSFER macro */
…		…
1332	dSTACKLEVEL;	1303	dSTACKLEVEL;
1333		1304
1334	/* sometimes transfer is only called to set idle_sp */	1305	/* sometimes transfer is only called to set idle_sp */
1335	if (expect_false (!next))	1306	if (expect_false (!next))
1336	{	1307	{
1337	((coro_cctx *)prev)->idle_sp = stacklevel;	1308	((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 */	1309	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
1339	}	1310	}
1340	else if (expect_true (prev != next))	1311	else if (expect_true (prev != next))
1341	{	1312	{
1342	coro_cctx *prev__cctx;	1313	coro_cctx *prev__cctx;
…		…
1349	prev->flags \|= CF_RUNNING;	1320	prev->flags \|= CF_RUNNING;
1350	}	1321	}
1351		1322
1352	prev->flags &= ~CF_RUNNING;	1323	prev->flags &= ~CF_RUNNING;
1353	next->flags \|= CF_RUNNING;	1324	next->flags \|= CF_RUNNING;
1354
1355	LOCK;
1356		1325
1357	/* first get rid of the old state */	1326	/* first get rid of the old state */
1358	save_perl (aTHX_ prev);	1327	save_perl (aTHX_ prev);
1359		1328
1360	if (expect_false (next->flags & CF_NEW))	1329	if (expect_false (next->flags & CF_NEW))
…		…
1369		1338
1370	prev__cctx = prev->cctx;	1339	prev__cctx = prev->cctx;
1371		1340
1372	/* possibly untie and reuse the cctx */	1341	/* possibly untie and reuse the cctx */
1373	if (expect_true (	1342	if (expect_true (
1374	prev__cctx->idle_sp == stacklevel	1343	prev__cctx->idle_sp == (void *)stacklevel
1375	&& !(prev__cctx->flags & CC_TRACE)	1344	&& !(prev__cctx->flags & CC_TRACE)
1376	&& !force_cctx	1345	&& !force_cctx
1377	))	1346	))
1378	{	1347	{
1379	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1348	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
…		…
1393	++next->usecount;	1362	++next->usecount;
1394		1363
1395	if (expect_true (!next->cctx))	1364	if (expect_true (!next->cctx))
1396	next->cctx = cctx_get (aTHX);	1365	next->cctx = cctx_get (aTHX);
1397		1366
1398	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1399	transfer_next = next;
1400
1401	if (expect_false (prev__cctx != next->cctx))	1367	if (expect_false (prev__cctx != next->cctx))
1402	{	1368	{
1403	prev__cctx->top_env = PL_top_env;	1369	prev__cctx->top_env = PL_top_env;
1404	PL_top_env = next->cctx->top_env;	1370	PL_top_env = next->cctx->top_env;
1405	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1371	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
…		…
1418	coro_state_destroy (pTHX_ struct coro *coro)	1384	coro_state_destroy (pTHX_ struct coro *coro)
1419	{	1385	{
1420	if (coro->flags & CF_DESTROYED)	1386	if (coro->flags & CF_DESTROYED)
1421	return 0;	1387	return 0;
1422		1388
		1389	if (coro->on_destroy)
		1390	coro->on_destroy (aTHX_ coro);
		1391
1423	coro->flags \|= CF_DESTROYED;	1392	coro->flags \|= CF_DESTROYED;
1424		1393
1425	if (coro->flags & CF_READY)	1394	if (coro->flags & CF_READY)
1426	{	1395	{
1427	/* reduce nready, as destroying a ready coro effectively unreadies it */	1396	/* reduce nready, as destroying a ready coro effectively unreadies it */
1428	/* alternative: look through all ready queues and remove the coro */	1397	/* alternative: look through all ready queues and remove the coro */
1429	LOCK;
1430	--coro_nready;	1398	--coro_nready;
1431	UNLOCK;
1432	}	1399	}
1433	else	1400	else
1434	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */	1401	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
1435		1402
1436	if (coro->mainstack && coro->mainstack != main_mainstack)	1403	if (coro->mainstack && coro->mainstack != main_mainstack)
1437	{	1404	{
1438	struct coro temp;	1405	struct coro temp;
1439		1406
1440	if (coro->flags & CF_RUNNING)	1407	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1441	croak ("FATAL: tried to destroy currently running coroutine");
1442		1408
1443	save_perl (aTHX_ &temp);	1409	save_perl (aTHX_ &temp);
1444	load_perl (aTHX_ coro);	1410	load_perl (aTHX_ coro);
1445		1411
1446	coro_destruct (aTHX_ coro);	1412	coro_destruct (aTHX_ coro);
…		…
1515	TRANSFER (ta, 1);	1481	TRANSFER (ta, 1);
1516	}	1482	}
1517		1483
1518	/ Coro ******************************************************************/	1484	/ Coro ******************************************************************/
1519		1485
1520	static void	1486	INLINE void
1521	coro_enq (pTHX_ SV *coro_sv)	1487	coro_enq (pTHX_ struct coro *coro)
1522	{	1488	{
1523	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1489	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1524	}	1490	}
1525		1491
1526	static SV *	1492	INLINE SV *
1527	coro_deq (pTHX)	1493	coro_deq (pTHX)
1528	{	1494	{
1529	int prio;	1495	int prio;
1530		1496
1531	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1497	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
…		…
1550	if (coro->flags & CF_READY)	1516	if (coro->flags & CF_READY)
1551	return 0;	1517	return 0;
1552		1518
1553	coro->flags \|= CF_READY;	1519	coro->flags \|= CF_READY;
1554		1520
1555	LOCK;
1556
1557	sv_hook = coro_nready ? 0 : coro_readyhook;	1521	sv_hook = coro_nready ? 0 : coro_readyhook;
1558	xs_hook = coro_nready ? 0 : coroapi.readyhook;	1522	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559		1523
1560	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));	1524	coro_enq (aTHX_ coro);
1561	++coro_nready;	1525	++coro_nready;
1562		1526
1563	UNLOCK;
1564
1565	if (sv_hook)	1527	if (sv_hook)
1566	{	1528	{
1567	dSP;	1529	dSP;
1568		1530
1569	ENTER;	1531	ENTER;
…		…
1595	{	1557	{
1596	SV prev_sv, next_sv;	1558	SV prev_sv, next_sv;
1597		1559
1598	for (;;)	1560	for (;;)
1599	{	1561	{
1600	LOCK;
1601	next_sv = coro_deq (aTHX);	1562	next_sv = coro_deq (aTHX);
1602		1563
1603	/* nothing to schedule: call the idle handler */	1564	/* nothing to schedule: call the idle handler */
1604	if (expect_false (!next_sv))	1565	if (expect_false (!next_sv))
1605	{	1566	{
1606	dSP;	1567	dSP;
1607	UNLOCK;
1608		1568
1609	ENTER;	1569	ENTER;
1610	SAVETMPS;	1570	SAVETMPS;
1611		1571
1612	PUSHMARK (SP);	1572	PUSHMARK (SP);
…		…
1617	FREETMPS;	1577	FREETMPS;
1618	LEAVE;	1578	LEAVE;
1619	continue;	1579	continue;
1620	}	1580	}
1621		1581
1622	ta->next = SvSTATE (next_sv);	1582	ta->next = SvSTATE_hv (next_sv);
1623		1583
1624	/* cannot transfer to destroyed coros, skip and look for next */	1584	/* cannot transfer to destroyed coros, skip and look for next */
1625	if (expect_false (ta->next->flags & CF_DESTROYED))	1585	if (expect_false (ta->next->flags & CF_DESTROYED))
1626	{	1586	{
1627	UNLOCK;
1628	SvREFCNT_dec (next_sv);	1587	SvREFCNT_dec (next_sv);
1629	/* coro_nready has already been taken care of by destroy */	1588	/* coro_nready has already been taken care of by destroy */
1630	continue;	1589	continue;
1631	}	1590	}
1632		1591
1633	--coro_nready;	1592	--coro_nready;
1634	UNLOCK;
1635	break;	1593	break;
1636	}	1594	}
1637		1595
1638	/* free this only after the transfer */	1596	/* free this only after the transfer */
1639	prev_sv = SvRV (coro_current);	1597	prev_sv = SvRV (coro_current);
1640	ta->prev = SvSTATE (prev_sv);	1598	ta->prev = SvSTATE_hv (prev_sv);
1641	TRANSFER_CHECK (*ta);	1599	TRANSFER_CHECK (*ta);
1642	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));	1600	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1643	ta->next->flags &= ~CF_READY;	1601	ta->next->flags &= ~CF_READY;
1644	SvRV_set (coro_current, next_sv);	1602	SvRV_set (coro_current, next_sv);
1645		1603
1646	LOCK;
1647	free_coro_mortal (aTHX);	1604	free_coro_mortal (aTHX);
1648	coro_mortal = prev_sv;	1605	coro_mortal = prev_sv;
1649	UNLOCK;
1650	}	1606	}
1651		1607
1652	INLINE void	1608	INLINE void
1653	prepare_cede (pTHX_ struct coro_transfer_args *ta)	1609	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1654	{	1610	{
…		…
1718	if (flags & CC_TRACE)	1674	if (flags & CC_TRACE)
1719	{	1675	{
1720	if (!coro->cctx)	1676	if (!coro->cctx)
1721	coro->cctx = cctx_new_run ();	1677	coro->cctx = cctx_new_run ();
1722	else if (!(coro->cctx->flags & CC_TRACE))	1678	else if (!(coro->cctx->flags & CC_TRACE))
1723	croak ("cannot enable tracing on coroutine with custom stack");	1679	croak ("cannot enable tracing on coroutine with custom stack,");
1724		1680
1725	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));	1681	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
1726	}	1682	}
1727	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1683	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728	{	1684	{
…		…
1732	PL_runops = RUNOPS_DEFAULT;	1688	PL_runops = RUNOPS_DEFAULT;
1733	else	1689	else
1734	coro->slot->runops = RUNOPS_DEFAULT;	1690	coro->slot->runops = RUNOPS_DEFAULT;
1735	}	1691	}
1736	}	1692	}
1737
1738	#if 0
1739	static int
1740	coro_gensub_free (pTHX_ SV sv, MAGIC mg)
1741	{
1742	AV *padlist;
1743	AV av = (AV )mg->mg_obj;
1744
1745	abort ();
1746
1747	return 0;
1748	}
1749
1750	static MGVTBL coro_gensub_vtbl = {
1751	0, 0, 0, 0,
1752	coro_gensub_free
1753	};
1754	#endif
1755		1693
1756	/*****************************************************************************/	1694	/*****************************************************************************/
1757	/* PerlIO::cede */	1695	/* PerlIO::cede */
1758		1696
1759	typedef struct	1697	typedef struct
…		…
1833	static const CV slf_cv; / for quick consistency check */	1771	static const CV slf_cv; / for quick consistency check */
1834		1772
1835	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */	1773	static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836	static SV *slf_arg0;	1774	static SV *slf_arg0;
1837	static SV *slf_arg1;	1775	static SV *slf_arg1;
		1776	static SV *slf_arg2;
1838		1777
1839	/* this restores the stack in the case we patched the entersub, to */	1778	/* this restores the stack in the case we patched the entersub, to */
1840	/* recreate the stack frame as perl will on following calls */	1779	/* recreate the stack frame as perl will on following calls */
1841	/* since entersub cleared the stack */	1780	/* since entersub cleared the stack */
1842	static OP *	1781	static OP *
…		…
1847	PUSHMARK (SP);	1786	PUSHMARK (SP);
1848		1787
1849	EXTEND (SP, 3);	1788	EXTEND (SP, 3);
1850	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));	1789	if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1851	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));	1790	if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
		1791	if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1852	PUSHs ((SV *)CvGV (slf_cv));	1792	PUSHs ((SV *)CvGV (slf_cv));
1853		1793
1854	RETURNOP (slf_restore.op_first);	1794	RETURNOP (slf_restore.op_first);
1855	}	1795	}
1856		1796
1857	static void	1797	static void
		1798	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
		1799	{
		1800	prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
		1801	}
		1802
		1803	static void
1858	slf_init_set_stacklevel (pTHX_ SV **arg, int items)	1804	slf_init_set_stacklevel (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1859	{	1805	{
1860	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));	1806	assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1861	CORO_SLF_DATA = (void *)SvIV (arg [0]);
1862	}
1863		1807
		1808	frame->prepare = slf_prepare_set_stacklevel;
		1809	frame->check = slf_check_nop;
		1810	frame->data = (void *)SvIV (arg [0]);
		1811	}
		1812
1864	static void	1813	static void
1865	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)	1814	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1866	{	1815	{
1867	prepare_set_stacklevel (ta, (struct coro_cctx *)CORO_SLF_DATA);	1816	SV arg = (SV )slf_frame.data;
1868	}
1869		1817
		1818	prepare_transfer (aTHX_ ta, arg [0], arg [1]);
		1819
		1820	/* if the destination has ->throw set, then copy it */
		1821	/* into the current coro's throw slot, so it will be raised */
		1822	/* after the schedule */
		1823	if (expect_false (ta->next->throw))
		1824	{
		1825	struct coro *coro = SvSTATE_current;
		1826	SvREFCNT_dec (coro->throw);
		1827	coro->throw = ta->next->throw;
		1828	ta->next->throw = 0;
		1829	}
		1830	}
		1831
1870	static void	1832	static void
1871	slf_init_transfer (pTHX_ SV **arg, int items)	1833	slf_init_transfer (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1872	{	1834	{
1873	if (items != 2)	1835	if (items != 2)
1874	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);	1836	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875		1837
		1838	frame->prepare = slf_prepare_transfer;
		1839	frame->check = slf_check_nop;
1876	CORO_SLF_DATA = (void )arg; / let's hope it will stay valid */	1840	frame->data = (void )arg; / let's hope it will stay valid */
1877	}	1841	}
1878		1842
1879	static void	1843	static void
1880	slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)	1844	slf_init_schedule (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1881	{	1845	{
1882	SV arg = (SV )CORO_SLF_DATA;	1846	frame->prepare = prepare_schedule;
1883		1847	frame->check = slf_check_nop;
1884	prepare_transfer (ta, arg [0], arg [1]);
1885	}	1848	}
1886		1849
1887	static void	1850	static void
1888	slf_init_nop (pTHX_ SV **arg, int items)	1851	slf_init_cede (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1889	{	1852	{
		1853	frame->prepare = prepare_cede;
		1854	frame->check = slf_check_nop;
1890	}	1855	}
1891		1856
1892	/* slf_prepare_schedule == prepare_schedule */	1857	static void
1893	/* slf_prepare_cede == prepare_cede */	1858	slf_init_cede_notself (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1894	/* slf_prepare_notself == prepare_notself */	1859	{
		1860	frame->prepare = prepare_cede_notself;
		1861	frame->check = slf_check_nop;
		1862	}
1895		1863
1896	/* we hijack an hopefully unused CV flag for our purposes */	1864	/* we hijack an hopefully unused CV flag for our purposes */
1897	#define CVf_SLF 0x4000	1865	#define CVf_SLF 0x4000
1898		1866
1899	/*	1867	/*
…		…
1905	static OP *	1873	static OP *
1906	pp_slf (pTHX)	1874	pp_slf (pTHX)
1907	{	1875	{
1908	I32 checkmark; /* mark SP to see how many elements check has pushed */	1876	I32 checkmark; /* mark SP to see how many elements check has pushed */
1909		1877
		1878	/* set up the slf frame, unless it has already been set-up */
		1879	/* the latter happens when a new coro has been started */
		1880	/* or when a new cctx was attached to an existing coroutine */
1910	if (expect_true (!slf_frame.prepare))	1881	if (expect_true (!slf_frame.prepare))
1911	{	1882	{
1912	/* first iteration */	1883	/* first iteration */
1913	dSP;	1884	dSP;
1914	SV **arg = PL_stack_base + TOPMARK + 1;	1885	SV **arg = PL_stack_base + TOPMARK + 1;
1915	int items = SP - arg; /* args without function object */	1886	int items = SP - arg; /* args without function object */
1916	SV gv = sp;	1887	SV gv = sp;
1917	struct CoroSLF *slf;
1918		1888
1919	/* do a quick consistency check on the "function" object, and if it isn't */	1889	/* do a quick consistency check on the "function" object, and if it isn't */
1920	/* for us, divert to the real entersub */	1890	/* for us, divert to the real entersub */
1921	if (SvTYPE (gv) != SVt_PVGV \|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))	1891	if (SvTYPE (gv) != SVt_PVGV \|\| !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1922	return PL_ppaddr[OP_ENTERSUB](aTHX);	1892	return PL_ppaddr[OP_ENTERSUB](aTHX);
1923
1924	/* pop args */
1925	SP = PL_stack_base + POPMARK;
1926		1893
1927	if (!(PL_op->op_flags & OPf_STACKED))	1894	if (!(PL_op->op_flags & OPf_STACKED))
1928	{	1895	{
1929	/* ampersand-form of call, use @_ instead of stack */	1896	/* ampersand-form of call, use @_ instead of stack */
1930	AV *av = GvAV (PL_defgv);	1897	AV *av = GvAV (PL_defgv);
…		…
1932	items = AvFILLp (av) + 1;	1899	items = AvFILLp (av) + 1;
1933	}	1900	}
1934		1901
1935	PUTBACK;	1902	PUTBACK;
1936		1903
1937	slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr;	1904	/* now call the init function, which needs to set up slf_frame */
1938	slf_frame.prepare = slf->prepare;	1905	((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1939	slf_frame.check = slf->check;	1906	(aTHX_ &slf_frame, GvCV (gv), arg, items);
1940	slf->init (aTHX_ arg, items);
1941	}
1942		1907
1943	/* now interpret the slf_frame */	1908	/* pop args */
		1909	SP = PL_stack_base + POPMARK;
		1910
		1911	PUTBACK;
		1912	}
		1913
		1914	/* now that we have a slf_frame, interpret it! */
1944	/* we use a callback system not to make the code needlessly */	1915	/* we use a callback system not to make the code needlessly */
1945	/* complicated, but so we can run multiple perl coros from one cctx */	1916	/* complicated, but so we can run multiple perl coros from one cctx */
1946		1917
1947	do	1918	do
1948	{	1919	{
…		…
1951	slf_frame.prepare (aTHX_ &ta);	1922	slf_frame.prepare (aTHX_ &ta);
1952	TRANSFER (ta, 0);	1923	TRANSFER (ta, 0);
1953		1924
1954	checkmark = PL_stack_sp - PL_stack_base;	1925	checkmark = PL_stack_sp - PL_stack_base;
1955	}	1926	}
1956	while (slf_frame.check (aTHX));	1927	while (slf_frame.check (aTHX_ &slf_frame));
1957		1928
1958	{	1929	{
1959	dSP;	1930	dSP;
1960	SV **bot = PL_stack_base + checkmark;	1931	SV **bot = PL_stack_base + checkmark;
1961	int gimme = GIMME_V;	1932	int gimme = GIMME_V;
1962		1933
1963	slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */	1934	slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1964		1935
1965	/* make sure we put something on the stack in scalar context */	1936	/* make sure we put something on the stack in scalar context */
1966	if (gimme == G_SCALAR)	1937	if (gimme == G_SCALAR)
1967	{	1938	{
1968	if (sp == bot)	1939	if (sp == bot)
…		…
1972	}	1943	}
1973		1944
1974	PUTBACK;	1945	PUTBACK;
1975	}	1946	}
1976		1947
		1948	{
		1949	struct coro *coro = SvSTATE_current;
		1950
		1951	if (expect_false (coro->throw))
		1952	{
		1953	SV *exception = sv_2mortal (coro->throw);
		1954
		1955	coro->throw = 0;
		1956	sv_setsv (ERRSV, exception);
		1957	croak (0);
		1958	}
		1959	}
		1960
1977	return NORMAL;	1961	return NORMAL;
1978	}	1962	}
1979		1963
1980	static void	1964	static void
1981	api_execute_slf (pTHX_ CV cv, const struct CoroSLF slf, SV **arg, int items)	1965	api_execute_slf (pTHX_ CV cv, coro_slf_cb init_cb, SV *arg, int items)
1982	{	1966	{
1983	assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));
1984	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));	1967	assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1985		1968
		1969	if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
		1970	&& PL_op->op_ppaddr != pp_slf)
		1971	croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
		1972
1986	if (items > 2)	1973	if (items > 3)
1987	croak ("Coro only supports a max of two arguments to SLF functions.");	1974	croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1988		1975
1989	CvFLAGS (cv) \|= CVf_SLF;	1976	CvFLAGS (cv) \|= CVf_SLF;
1990	CvXSUBANY (cv).any_ptr = (void *)slf;	1977	CvXSUBANY (cv).any_ptr = (void *)init_cb;
1991	slf_cv = cv;	1978	slf_cv = cv;
1992		1979
1993	/* we patch the op, and then re-run the whole call */	1980	/* we patch the op, and then re-run the whole call */
1994	/* we have to put the same argument on the stack for this to work */	1981	/* we have to put the same argument on the stack for this to work */
1995	/* and this will be done by pp_restore */	1982	/* and this will be done by pp_restore */
1996	slf_restore.op_next = (OP *)&slf_restore;	1983	slf_restore.op_next = (OP *)&slf_restore;
1997	slf_restore.op_type = OP_NULL;	1984	slf_restore.op_type = OP_CUSTOM;
1998	slf_restore.op_ppaddr = pp_restore;	1985	slf_restore.op_ppaddr = pp_restore;
1999	slf_restore.op_first = PL_op;	1986	slf_restore.op_first = PL_op;
2000		1987
2001	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;	1988	slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
2002	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;	1989	slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
		1990	slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
2003		1991
2004	PL_op->op_ppaddr = pp_slf;	1992	PL_op->op_ppaddr = pp_slf;
2005		1993
2006	PL_op = (OP *)&slf_restore;	1994	PL_op = (OP *)&slf_restore;
2007	}	1995	}
2008		1996
		1997	/*****************************************************************************/
		1998
		1999	static void
		2000	coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
		2001	{
		2002	SV *count_sv = AvARRAY (av)[0];
		2003	IV count = SvIVX (count_sv);
		2004
		2005	count += adjust;
		2006	SvIVX (count_sv) = count;
		2007
		2008	/* now wake up as many waiters as are expected to lock */
		2009	while (count > 0 && AvFILLp (av) > 0)
		2010	{
		2011	SV *cb;
		2012
		2013	/* swap first two elements so we can shift a waiter */
		2014	AvARRAY (av)[0] = AvARRAY (av)[1];
		2015	AvARRAY (av)[1] = count_sv;
		2016	cb = av_shift (av);
		2017
		2018	if (SvOBJECT (cb))
		2019	api_ready (aTHX_ cb);
		2020	else
		2021	croak ("callbacks not yet supported");
		2022
		2023	SvREFCNT_dec (cb);
		2024
		2025	--count;
		2026	}
		2027	}
		2028
		2029	static void
		2030	coro_semaphore_on_destroy (pTHX_ struct coro *coro)
		2031	{
		2032	/* call $sem->adjust (0) to possibly wake up some other waiters */
		2033	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
		2034	}
		2035
		2036	static int
		2037	slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
		2038	{
		2039	AV av = (AV )frame->data;
		2040	SV *count_sv = AvARRAY (av)[0];
		2041
		2042	if (SvIVX (count_sv) > 0)
		2043	{
		2044	SvSTATE_current->on_destroy = 0;
		2045	SvIVX (count_sv) = SvIVX (count_sv) - 1;
		2046	return 0;
		2047	}
		2048	else
		2049	{
		2050	int i;
		2051	/* if we were woken up but can't down, we look through the whole */
		2052	/* waiters list and only add us if we aren't in there already */
		2053	/* this avoids some degenerate memory usage cases */
		2054
		2055	for (i = 1; i <= AvFILLp (av); ++i)
		2056	if (AvARRAY (av)[i] == SvRV (coro_current))
		2057	return 1;
		2058
		2059	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2060	return 1;
		2061	}
		2062	}
		2063
		2064	static void
		2065	slf_init_semaphore_down (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2066	{
		2067	AV av = (AV )SvRV (arg [0]);
		2068
		2069	if (SvIVX (AvARRAY (av)[0]) > 0)
		2070	{
		2071	frame->data = (void *)av;
		2072	frame->prepare = prepare_nop;
		2073	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
		2074	}
		2075	else
		2076	{
		2077	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
		2078
		2079	frame->data = (void )sv_2mortal (SvREFCNT_inc ((SV )av));
		2080	frame->prepare = prepare_schedule;
		2081
		2082	/* to avoid race conditions when a woken-up coro gets terminated */
		2083	/* we arrange for a temporary on_destroy that calls adjust (0) */
		2084	assert (!SvSTATE_current->on_destroy);//D
		2085	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
		2086	}
		2087
		2088	frame->check = slf_check_semaphore_down;
		2089
		2090	}
		2091
		2092	/*****************************************************************************/
		2093
		2094	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
		2095
		2096	/* create a closure from XS, returns a code reference */
		2097	/* the arg can be accessed via GENSUB_ARG from the callback */
		2098	/* the callback must use dXSARGS/XSRETURN */
		2099	static SV *
		2100	gensub (pTHX_ void (xsub)(pTHX_ CV ), void *arg)
		2101	{
		2102	CV cv = (CV )NEWSV (0, 0);
		2103
		2104	sv_upgrade ((SV *)cv, SVt_PVCV);
		2105
		2106	CvANON_on (cv);
		2107	CvISXSUB_on (cv);
		2108	CvXSUB (cv) = xsub;
		2109	GENSUB_ARG = arg;
		2110
		2111	return newRV_noinc ((SV *)cv);
		2112	}
		2113
		2114	/*****************************************************************************/
		2115
2009	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2116	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2010		2117
2011	PROTOTYPES: DISABLE	2118	PROTOTYPES: DISABLE
2012		2119
2013	BOOT:	2120	BOOT:
2014	{	2121	{
2015	#ifdef USE_ITHREADS	2122	#ifdef USE_ITHREADS
2016	MUTEX_INIT (&coro_lock);
2017	# if CORO_PTHREAD	2123	# if CORO_PTHREAD
2018	coro_thx = PERL_GET_CONTEXT;	2124	coro_thx = PERL_GET_CONTEXT;
2019	# endif	2125	# endif
2020	#endif	2126	#endif
2021	BOOT_PAGESIZE;	2127	BOOT_PAGESIZE;
…		…
2042	main_top_env = PL_top_env;	2148	main_top_env = PL_top_env;
2043		2149
2044	while (main_top_env->je_prev)	2150	while (main_top_env->je_prev)
2045	main_top_env = main_top_env->je_prev;	2151	main_top_env = main_top_env->je_prev;
2046		2152
		2153	{
		2154	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
		2155
		2156	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
		2157	hv_store_ent (PL_custom_op_names, slf,
		2158	newSVpv ("coro_slf", 0), 0);
		2159
		2160	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
		2161	hv_store_ent (PL_custom_op_descs, slf,
		2162	newSVpv ("coro schedule like function", 0), 0);
		2163	}
		2164
2047	coroapi.ver = CORO_API_VERSION;	2165	coroapi.ver = CORO_API_VERSION;
2048	coroapi.rev = CORO_API_REVISION;	2166	coroapi.rev = CORO_API_REVISION;
		2167
2049	coroapi.transfer = api_transfer;	2168	coroapi.transfer = api_transfer;
		2169
		2170	coroapi.sv_state = SvSTATE_;
2050	coroapi.execute_slf = api_execute_slf;	2171	coroapi.execute_slf = api_execute_slf;
2051	coroapi.sv_state = SvSTATE_;	2172	coroapi.prepare_nop = prepare_nop;
		2173	coroapi.prepare_schedule = prepare_schedule;
		2174	coroapi.prepare_cede = prepare_cede;
		2175	coroapi.prepare_cede_notself = prepare_cede_notself;
2052		2176
2053	{	2177	{
2054	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);	2178	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2055		2179
2056	if (!svp) croak ("Time::HiRes is required");	2180	if (!svp) croak ("Time::HiRes is required");
…		…
2092	RETVAL	2216	RETVAL
2093		2217
2094	void	2218	void
2095	_set_stacklevel (...)	2219	_set_stacklevel (...)
2096	CODE:	2220	CODE:
2097	{
2098	static struct CoroSLF slf = { slf_init_set_stacklevel, slf_prepare_set_stacklevel, slf_check_nop };
2099	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);	2221	api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2100	}
2101		2222
2102	void	2223	void
2103	transfer (...)	2224	transfer (...)
		2225	PROTOTYPE: $$
2104	CODE:	2226	CODE:
2105	{
2106	static struct CoroSLF slf = { slf_init_transfer, slf_prepare_transfer, slf_check_nop };
2107	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);	2227	api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
2108	}
2109		2228
2110	bool	2229	bool
2111	_destroy (SV *coro_sv)	2230	_destroy (SV *coro_sv)
2112	CODE:	2231	CODE:
2113	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2232	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
2120	CODE:	2239	CODE:
2121	_exit (code);	2240	_exit (code);
2122		2241
2123	int	2242	int
2124	cctx_stacksize (int new_stacksize = 0)	2243	cctx_stacksize (int new_stacksize = 0)
		2244	PROTOTYPE: ;$
2125	CODE:	2245	CODE:
2126	RETVAL = cctx_stacksize;	2246	RETVAL = cctx_stacksize;
2127	if (new_stacksize)	2247	if (new_stacksize)
2128	{	2248	{
2129	cctx_stacksize = new_stacksize;	2249	cctx_stacksize = new_stacksize;
…		…
2132	OUTPUT:	2252	OUTPUT:
2133	RETVAL	2253	RETVAL
2134		2254
2135	int	2255	int
2136	cctx_max_idle (int max_idle = 0)	2256	cctx_max_idle (int max_idle = 0)
		2257	PROTOTYPE: ;$
2137	CODE:	2258	CODE:
2138	RETVAL = cctx_max_idle;	2259	RETVAL = cctx_max_idle;
2139	if (max_idle > 1)	2260	if (max_idle > 1)
2140	cctx_max_idle = max_idle;	2261	cctx_max_idle = max_idle;
2141	OUTPUT:	2262	OUTPUT:
2142	RETVAL	2263	RETVAL
2143		2264
2144	int	2265	int
2145	cctx_count ()	2266	cctx_count ()
		2267	PROTOTYPE:
2146	CODE:	2268	CODE:
2147	RETVAL = cctx_count;	2269	RETVAL = cctx_count;
2148	OUTPUT:	2270	OUTPUT:
2149	RETVAL	2271	RETVAL
2150		2272
2151	int	2273	int
2152	cctx_idle ()	2274	cctx_idle ()
		2275	PROTOTYPE:
2153	CODE:	2276	CODE:
2154	RETVAL = cctx_idle;	2277	RETVAL = cctx_idle;
2155	OUTPUT:	2278	OUTPUT:
2156	RETVAL	2279	RETVAL
2157		2280
2158	void	2281	void
2159	list ()	2282	list ()
		2283	PROTOTYPE:
2160	PPCODE:	2284	PPCODE:
2161	{	2285	{
2162	struct coro *coro;	2286	struct coro *coro;
2163	for (coro = coro_first; coro; coro = coro->next)	2287	for (coro = coro_first; coro; coro = coro->next)
2164	if (coro->hv)	2288	if (coro->hv)
…		…
2231	SvREFCNT_dec (self->throw);	2355	SvREFCNT_dec (self->throw);
2232	self->throw = SvOK (throw) ? newSVsv (throw) : 0;	2356	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2233		2357
2234	void	2358	void
2235	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)	2359	api_trace (SV *coro, int flags = CC_TRACE \| CC_TRACE_SUB)
		2360	PROTOTYPE: $;$
2236	C_ARGS: aTHX_ coro, flags	2361	C_ARGS: aTHX_ coro, flags
2237		2362
2238	SV *	2363	SV *
2239	has_cctx (Coro::State coro)	2364	has_cctx (Coro::State coro)
2240	PROTOTYPE: $	2365	PROTOTYPE: $
…		…
2265	OUTPUT:	2390	OUTPUT:
2266	RETVAL	2391	RETVAL
2267		2392
2268	void	2393	void
2269	force_cctx ()	2394	force_cctx ()
		2395	PROTOTYPE:
2270	CODE:	2396	CODE:
2271	struct coro *coro = SvSTATE (coro_current);
2272	coro->cctx->idle_sp = 0;	2397	SvSTATE_current->cctx->idle_sp = 0;
2273		2398
2274	void	2399	void
2275	swap_defsv (Coro::State self)	2400	swap_defsv (Coro::State self)
2276	PROTOTYPE: $	2401	PROTOTYPE: $
2277	ALIAS:	2402	ALIAS:
2278	swap_defav = 1	2403	swap_defav = 1
2279	CODE:	2404	CODE:
2280	if (!self->slot)	2405	if (!self->slot)
2281	croak ("cannot swap state with coroutine that has no saved state");	2406	croak ("cannot swap state with coroutine that has no saved state,");
2282	else	2407	else
2283	{	2408	{
2284	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);	2409	SV src = ix ? (SV )&GvAV (PL_defgv) : &GvSV (PL_defgv);
2285	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;	2410	SV dst = ix ? (SV )&self->slot->defav : (SV **)&self->slot->defsv;
2286		2411
…		…
2330	}	2455	}
2331		2456
2332	void	2457	void
2333	schedule (...)	2458	schedule (...)
2334	CODE:	2459	CODE:
2335	{
2336	static struct CoroSLF slf = { slf_init_nop, prepare_schedule, slf_check_nop };
2337	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);	2460	api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
2338	}
2339		2461
2340	void	2462	void
2341	cede (...)	2463	cede (...)
2342	CODE:	2464	CODE:
2343	{
2344	static struct CoroSLF slf = { slf_init_nop, prepare_cede, slf_check_nop };
2345	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);	2465	api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
2346	}
2347		2466
2348	void	2467	void
2349	cede_notself (...)	2468	cede_notself (...)
2350	CODE:	2469	CODE:
2351	{
2352	static struct CoroSLF slf = { slf_init_nop, prepare_cede_notself, slf_check_nop };
2353	api_execute_slf (aTHX_ cv, &slf, &ST (0), items);	2470	api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
2354	}
2355		2471
2356	void	2472	void
2357	_set_current (SV *current)	2473	_set_current (SV *current)
2358	PROTOTYPE: $	2474	PROTOTYPE: $
2359	CODE:	2475	CODE:
…		…
2362		2478
2363	void	2479	void
2364	_set_readyhook (SV *hook)	2480	_set_readyhook (SV *hook)
2365	PROTOTYPE: $	2481	PROTOTYPE: $
2366	CODE:	2482	CODE:
2367	LOCK;
2368	SvREFCNT_dec (coro_readyhook);	2483	SvREFCNT_dec (coro_readyhook);
2369	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	2484	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2370	UNLOCK;
2371		2485
2372	int	2486	int
2373	prio (Coro::State coro, int newprio = 0)	2487	prio (Coro::State coro, int newprio = 0)
		2488	PROTOTYPE: $;$
2374	ALIAS:	2489	ALIAS:
2375	nice = 1	2490	nice = 1
2376	CODE:	2491	CODE:
2377	{	2492	{
2378	RETVAL = coro->prio;	2493	RETVAL = coro->prio;
…		…
2410	# for async_pool speedup	2525	# for async_pool speedup
2411	void	2526	void
2412	_pool_1 (SV *cb)	2527	_pool_1 (SV *cb)
2413	CODE:	2528	CODE:
2414	{	2529	{
2415	struct coro *coro = SvSTATE (coro_current);
2416	HV hv = (HV )SvRV (coro_current);	2530	HV hv = (HV )SvRV (coro_current);
		2531	struct coro coro = SvSTATE_hv ((SV )hv);
2417	AV *defav = GvAV (PL_defgv);	2532	AV *defav = GvAV (PL_defgv);
2418	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2533	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2419	AV *invoke_av;	2534	AV *invoke_av;
2420	int i, len;	2535	int i, len;
2421		2536
…		…
2442	{	2557	{
2443	av_fill (defav, len - 1);	2558	av_fill (defav, len - 1);
2444	for (i = 0; i < len; ++i)	2559	for (i = 0; i < len; ++i)
2445	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));	2560	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2446	}	2561	}
2447
2448	SvREFCNT_dec (invoke);
2449	}	2562	}
2450		2563
2451	void	2564	void
2452	_pool_2 (SV *cb)	2565	_pool_2 (SV *cb)
2453	CODE:	2566	CODE:
2454	{	2567	{
2455	struct coro *coro = SvSTATE (coro_current);	2568	struct coro *coro = SvSTATE_current;
2456		2569
2457	sv_setsv (cb, &PL_sv_undef);	2570	sv_setsv (cb, &PL_sv_undef);
2458		2571
2459	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;	2572	SvREFCNT_dec ((SV )PL_defoutgv); PL_defoutgv = (GV )coro->saved_deffh;
2460	coro->saved_deffh = 0;	2573	coro->saved_deffh = 0;
…		…
2478	api_trace (aTHX_ coro_current, 0);	2591	api_trace (aTHX_ coro_current, 0);
2479		2592
2480	av_push (av_async_pool, newSVsv (coro_current));	2593	av_push (av_async_pool, newSVsv (coro_current));
2481	}	2594	}
2482		2595
2483	#if 0
2484
2485	void
2486	_generator_call (...)
2487	PROTOTYPE: @
2488	PPCODE:
2489	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2490	xxxx
2491	abort ();
2492
2493	SV *
2494	gensub (SV *sub, ...)
2495	PROTOTYPE: &;@
2496	CODE:
2497	{
2498	struct coro *coro;
2499	MAGIC *mg;
2500	CV *xcv;
2501	CV ncv = (CV )newSV_type (SVt_PVCV);
2502	int i;
2503
2504	CvGV (ncv) = CvGV (cv);
2505	CvFILE (ncv) = CvFILE (cv);
2506
2507	Newz (0, coro, 1, struct coro);
2508	coro->args = newAV ();
2509	coro->flags = CF_NEW;
2510
2511	av_extend (coro->args, items - 1);
2512	for (i = 1; i < items; i++)
2513	av_push (coro->args, newSVsv (ST (i)));
2514
2515	CvISXSUB_on (ncv);
2516	CvXSUBANY (ncv).any_ptr = (void *)coro;
2517
2518	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2519
2520	CvXSUB (ncv) = CvXSUB (xcv);
2521	CvANON_on (ncv);
2522
2523	mg = sv_magicext ((SV )ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char )coro, 0);
2524	RETVAL = newRV_noinc ((SV *)ncv);
2525	}
2526	OUTPUT:
2527	RETVAL
2528
2529	#endif
2530
2531		2596
2532	MODULE = Coro::State PACKAGE = Coro::AIO	2597	MODULE = Coro::State PACKAGE = Coro::AIO
2533		2598
2534	void	2599	void
2535	_get_state (SV *self)	2600	_get_state (SV *self)
		2601	PROTOTYPE: $
2536	PPCODE:	2602	PPCODE:
2537	{	2603	{
2538	AV *defav = GvAV (PL_defgv);	2604	AV *defav = GvAV (PL_defgv);
2539	AV *av = newAV ();	2605	AV *av = newAV ();
2540	int i;	2606	int i;
…		…
2583	MODULE = Coro::State PACKAGE = Coro::AnyEvent	2649	MODULE = Coro::State PACKAGE = Coro::AnyEvent
2584		2650
2585	BOOT:	2651	BOOT:
2586	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);	2652	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2587		2653
2588	SV *	2654	void
2589	_schedule (...)	2655	_schedule (...)
2590	PROTOTYPE: @
2591	CODE:	2656	CODE:
2592	{	2657	{
2593	static int incede;	2658	static int incede;
2594		2659
2595	api_cede_notself (aTHX);	2660	api_cede_notself (aTHX);
…		…
2614	MODULE = Coro::State PACKAGE = PerlIO::cede	2679	MODULE = Coro::State PACKAGE = PerlIO::cede
2615		2680
2616	BOOT:	2681	BOOT:
2617	PerlIO_define_layer (aTHX_ &PerlIO_cede);	2682	PerlIO_define_layer (aTHX_ &PerlIO_cede);
2618		2683
		2684	MODULE = Coro::State PACKAGE = Coro::Semaphore
		2685
		2686	SV *
		2687	new (SV klass, SV count_ = 0)
		2688	CODE:
		2689	{
		2690	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
		2691	AV *av = newAV ();
		2692	av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
		2693	RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
		2694	}
		2695	OUTPUT:
		2696	RETVAL
		2697
		2698	SV *
		2699	count (SV *self)
		2700	CODE:
		2701	RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
		2702	OUTPUT:
		2703	RETVAL
		2704
		2705	void
		2706	up (SV *self, int adjust = 1)
		2707	ALIAS:
		2708	adjust = 1
		2709	CODE:
		2710	coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
		2711
		2712	void
		2713	down (SV *self)
		2714	CODE:
		2715	api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
		2716
		2717	void
		2718	try (SV *self)
		2719	PPCODE:
		2720	{
		2721	AV av = (AV )SvRV (self);
		2722	SV *count_sv = AvARRAY (av)[0];
		2723	IV count = SvIVX (count_sv);
		2724
		2725	if (count > 0)
		2726	{
		2727	--count;
		2728	SvIVX (count_sv) = count;
		2729	XSRETURN_YES;
		2730	}
		2731	else
		2732	XSRETURN_NO;
		2733	}
		2734
		2735	void
		2736	waiters (SV *self)
		2737	CODE:
		2738	{
		2739	AV av = (AV )SvRV (self);
		2740
		2741	if (GIMME_V == G_SCALAR)
		2742	XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
		2743	else
		2744	{
		2745	int i;
		2746	EXTEND (SP, AvFILLp (av) + 1 - 1);
		2747	for (i = 1; i <= AvFILLp (av); ++i)
		2748	PUSHs (newSVsv (AvARRAY (av)[i]));
		2749	}
		2750	}
		2751

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Comparing Coro/Coro/State.xs (file contents): Revision 1.272 by root, Fri Nov 14 20:35:49 2008 UTC vs. Revision 1.283 by root, Sun Nov 16 11:12:57 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.272 by root, Fri Nov 14 20:35:49 2008 UTC vs.
Revision 1.283 by root, Sun Nov 16 11:12:57 2008 UTC