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Comparing Coro/Coro/State.xs (file contents):
Revision 1.264 by root, Fri Nov 14 02:29:09 2008 UTC vs.
Revision 1.314 by root, Thu Nov 20 03:24:39 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
55 55
56#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61 61
62#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr 63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
65# endif 65# endif
… …
95# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
96#endif 96#endif
97#ifndef newSV 97#ifndef newSV
98# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
99#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
100 106
101/* 5.8.7 */ 107/* 5.8.7 */
102#ifndef SvRV_set 108#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 109# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 110#endif
… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 122# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 123#endif
118 124
119/* The next macros try to return the current stack pointer, in an as 125/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 126 * portable way as possible. */
127#if __GNUC__ >= 4
128# define dSTACKLEVEL int stacklevel_dummy
129# define STACKLEVEL __builtin_frame_address (0)
130#else
121#define dSTACKLEVEL volatile char stacklevel 131# define dSTACKLEVEL volatile void *stacklevel
122#define STACKLEVEL ((void *)&stacklevel) 132# define STACKLEVEL ((void *)&stacklevel)
133#endif
123 134
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 135#define IN_DESTRUCT (PL_main_cv == Nullcv)
125 136
126#if __GNUC__ >= 3 137#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 138# define attribute(x) __attribute__(x)
… …
137#define expect_true(expr) expect ((expr) != 0, 1) 148#define expect_true(expr) expect ((expr) != 0, 1)
138 149
139#define NOINLINE attribute ((noinline)) 150#define NOINLINE attribute ((noinline))
140 151
141#include "CoroAPI.h" 152#include "CoroAPI.h"
153#define GCoroAPI (&coroapi) /* very sneaky */
142 154
143#ifdef USE_ITHREADS 155#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 156# if CORO_PTHREAD
149static void *coro_thx; 157static void *coro_thx;
150# endif 158# endif
151
152#else
153
154# define LOCK (void)0
155# define UNLOCK (void)0
156
157#endif 159#endif
158
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
163
164/* helper storage struct for Coro::AIO */
165struct io_state
166{
167 AV *res;
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173 160
174static double (*nvtime)(); /* so why doesn't it take void? */ 161static double (*nvtime)(); /* so why doesn't it take void? */
162
163/* we hijack an hopefully unused CV flag for our purposes */
164#define CVf_SLF 0x4000
165static OP *pp_slf (pTHX);
175 166
176static U32 cctx_gen; 167static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 171static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184
185struct transfer_args
186{
187 struct coro *prev, *next;
188};
189 174
190static GV *irsgv; /* $/ */ 175static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 176static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 177static SV *rv_diehook;
193static SV *rv_warnhook; 178static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 179static HV *hv_sig; /* %SIG */
195 180
196/* async_pool helper stuff */ 181/* async_pool helper stuff */
197static SV *sv_pool_rss; 182static SV *sv_pool_rss;
198static SV *sv_pool_size; 183static SV *sv_pool_size;
184static SV *sv_async_pool_idle;
199static AV *av_async_pool; 185static AV *av_async_pool;
186static SV *sv_Coro;
187static CV *cv_pool_handler;
188static CV *cv_coro_new;
200 189
201/* Coro::AnyEvent */ 190/* Coro::AnyEvent */
202static SV *sv_activity; 191static SV *sv_activity;
203 192
204static struct coro_cctx *cctx_first; 193static struct coro_cctx *cctx_first;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 201 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 202 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 203};
215 204
216/* this is a structure representing a c-level coroutine */ 205/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 206typedef struct coro_cctx
207{
218 struct coro_cctx *next; 208 struct coro_cctx *next;
219 209
220 /* the stack */ 210 /* the stack */
221 void *sptr; 211 void *sptr;
222 size_t ssize; 212 size_t ssize;
… …
240 CF_NEW = 0x0004, /* has never been switched to */ 230 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 231 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242}; 232};
243 233
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 234/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 235typedef struct
236{
246 SV *defsv; 237 SV *defsv;
247 AV *defav; 238 AV *defav;
248 SV *errsv; 239 SV *errsv;
249 SV *irsgv; 240 SV *irsgv;
250#define VAR(name,type) type name; 241#define VAR(name,type) type name;
… …
254 245
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 246#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 247
257/* this is a structure representing a perl-level coroutine */ 248/* this is a structure representing a perl-level coroutine */
258struct coro { 249struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 250 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 251 coro_cctx *cctx;
261 252
262 /* process data */ 253 /* state data */
254 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 255 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 256 perl_slots *slot; /* basically the saved sp */
265 257
258 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 259 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 260 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 261 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 262 HV *hv; /* the perl hash associated with this coro, if any */
263 void (*on_destroy)(pTHX_ struct coro *coro);
270 264
271 /* statistics */ 265 /* statistics */
272 int usecount; /* number of transfers to this coro */ 266 int usecount; /* number of transfers to this coro */
273 267
274 /* coro process data */ 268 /* coro process data */
275 int prio; 269 int prio;
276 SV *throw; /* exception to be thrown */ 270 SV *except; /* exception to be thrown */
271 SV *rouse_cb;
277 272
278 /* async_pool */ 273 /* async_pool */
279 SV *saved_deffh; 274 SV *saved_deffh;
275 SV *invoke_cb;
276 AV *invoke_av;
280 277
281 /* linked list */ 278 /* linked list */
282 struct coro *next, *prev; 279 struct coro *next, *prev;
283}; 280};
284 281
285typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 283typedef struct coro *Coro__State_or_hashref;
284
285/* the following variables are effectively part of the perl context */
286/* and get copied between struct coro and these variables */
287/* the mainr easonw e don't support windows process emulation */
288static struct CoroSLF slf_frame; /* the current slf frame */
287 289
288/** Coro ********************************************************************/ 290/** Coro ********************************************************************/
289 291
290#define PRIO_MAX 3 292#define PRIO_MAX 3
291#define PRIO_HIGH 1 293#define PRIO_HIGH 1
… …
296 298
297/* for Coro.pm */ 299/* for Coro.pm */
298static SV *coro_current; 300static SV *coro_current;
299static SV *coro_readyhook; 301static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 302static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301static int coro_nready; 303static CV *cv_coro_run, *cv_coro_terminate;
302static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
303 306
304/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
305 308
306static SV * 309static SV *
307coro_get_sv (pTHX_ const char *name, int create) 310coro_get_sv (pTHX_ const char *name, int create)
… …
329#if PERL_VERSION_ATLEAST (5,10,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
331 get_hv (name, create); 334 get_hv (name, create);
332#endif 335#endif
333 return get_hv (name, create); 336 return get_hv (name, create);
337}
338
339/* may croak */
340INLINE CV *
341coro_sv_2cv (pTHX_ SV *sv)
342{
343 HV *st;
344 GV *gvp;
345 return sv_2cv (sv, &st, &gvp, 0);
334} 346}
335 347
336static AV * 348static AV *
337coro_clone_padlist (pTHX_ CV *cv) 349coro_clone_padlist (pTHX_ CV *cv)
338{ 350{
… …
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 404 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 405
394 return 0; 406 return 0;
395} 407}
396 408
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext 409#define CORO_MAGIC_type_cv 26
398#define CORO_MAGIC_type_state PERL_MAGIC_ext 410#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 411
400static MGVTBL coro_cv_vtbl = { 412static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 413 0, 0, 0, 0,
402 coro_cv_free 414 coro_cv_free
403}; 415};
404 416
417#define CORO_MAGIC_NN(sv, type) \
418 (expect_true (SvMAGIC (sv)->mg_type == type) \
419 ? SvMAGIC (sv) \
420 : mg_find (sv, type))
421
405#define CORO_MAGIC(sv, type) \ 422#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \ 423 (expect_true (SvMAGIC (sv)) \
407 ? SvMAGIC (sv)->mg_type == type \ 424 ? CORO_MAGIC_NN (sv, type) \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0 425 : 0)
411 426
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 427#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 428#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
414 429
415INLINE struct coro * 430INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro) 431SvSTATE_ (pTHX_ SV *coro)
417{ 432{
418 HV *stash; 433 HV *stash;
… …
435 mg = CORO_MAGIC_state (coro); 450 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr; 451 return (struct coro *)mg->mg_ptr;
437} 452}
438 453
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 454#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
455
456/* faster than SvSTATE, but expects a coroutine hv */
457#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
458#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
440 459
441/* the next two functions merely cache the padlists */ 460/* the next two functions merely cache the padlists */
442static void 461static void
443get_padlist (pTHX_ CV *cv) 462get_padlist (pTHX_ CV *cv)
444{ 463{
… …
450 else 469 else
451 { 470 {
452#if CORO_PREFER_PERL_FUNCTIONS 471#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 472 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 473 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 474 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 475 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 476 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 477 SvREFCNT_dec (cp);
459#else 478#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 479 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
511 CvPADLIST (cv) = (AV *)POPs; 530 CvPADLIST (cv) = (AV *)POPs;
512 } 531 }
513 532
514 PUTBACK; 533 PUTBACK;
515 } 534 }
535
536 slf_frame = c->slf_frame;
537 CORO_THROW = c->except;
516} 538}
517 539
518static void 540static void
519save_perl (pTHX_ Coro__State c) 541save_perl (pTHX_ Coro__State c)
520{ 542{
543 c->except = CORO_THROW;
544 c->slf_frame = slf_frame;
545
521 { 546 {
522 dSP; 547 dSP;
523 I32 cxix = cxstack_ix; 548 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 549 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 550 PERL_SI *top_si = PL_curstackinfo;
… …
592 #undef VAR 617 #undef VAR
593 } 618 }
594} 619}
595 620
596/* 621/*
597 * allocate various perl stacks. This is an exact copy 622 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 623 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 624 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 625 * not usually need a lot of stackspace.
601 */ 626 */
602#if CORO_PREFER_PERL_FUNCTIONS 627#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 628# define coro_init_stacks(thx) init_stacks ()
604#else 629#else
605static void 630static void
606coro_init_stacks (pTHX) 631coro_init_stacks (pTHX)
607{ 632{
608 PL_curstackinfo = new_stackinfo(32, 8); 633 PL_curstackinfo = new_stackinfo(32, 8);
… …
671#if !PERL_VERSION_ATLEAST (5,10,0) 696#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 697 Safefree (PL_retstack);
673#endif 698#endif
674} 699}
675 700
701#define CORO_RSS \
702 rss += sizeof (SYM (curstackinfo)); \
703 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
705 rss += SYM (tmps_max) * sizeof (SV *); \
706 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
707 rss += SYM (scopestack_max) * sizeof (I32); \
708 rss += SYM (savestack_max) * sizeof (ANY);
709
676static size_t 710static size_t
677coro_rss (pTHX_ struct coro *coro) 711coro_rss (pTHX_ struct coro *coro)
678{ 712{
679 size_t rss = sizeof (*coro); 713 size_t rss = sizeof (*coro);
680 714
681 if (coro->mainstack) 715 if (coro->mainstack)
682 { 716 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 717 if (coro->flags & CF_RUNNING)
687 { 718 {
688 slot = &tmp_slot; 719 #define SYM(sym) PL_ ## sym
689 720 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 721 #undef SYM
693 } 722 }
694 else 723 else
695 slot = coro->slot;
696
697 if (slot)
698 { 724 {
699 rss += sizeof (slot->curstackinfo); 725 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 726 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 727 #undef SYM
702 rss += slot->tmps_max * sizeof (SV *);
703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
704 rss += slot->scopestack_max * sizeof (I32);
705 rss += slot->savestack_max * sizeof (ANY);
706
707#if !PERL_VERSION_ATLEAST (5,10,0)
708 rss += slot->retstack_max * sizeof (OP *);
709#endif
710 } 728 }
711 } 729 }
712 730
713 return rss; 731 return rss;
714} 732}
… …
723#ifndef MgPV_nolen_const 741#ifndef MgPV_nolen_const
724#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 742#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
725 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 743 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
726 (const char*)(mg)->mg_ptr) 744 (const char*)(mg)->mg_ptr)
727#endif 745#endif
728
729/* we sometimes need to create the effect of entersub calling us */
730#define SSL_HEAD (void)0
731/* we somtimes need to create the effect of leaving via entersub */
732#define SSL_TAIL (void)0
733 746
734/* 747/*
735 * This overrides the default magic get method of %SIG elements. 748 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 749 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide 750 * and instead of tryign to save and restore the hash elements, we just provide
… …
809 822
810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 823 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
811} 824}
812 825
813static void 826static void
827prepare_nop (pTHX_ struct coro_transfer_args *ta)
828{
829 /* kind of mega-hacky, but works */
830 ta->next = ta->prev = (struct coro *)ta;
831}
832
833static int
834slf_check_nop (pTHX_ struct CoroSLF *frame)
835{
836 return 0;
837}
838
839static UNOP coro_setup_op;
840
841static void NOINLINE /* noinline to keep it out of the transfer fast path */
814coro_setup (pTHX_ struct coro *coro) 842coro_setup (pTHX_ struct coro *coro)
815{ 843{
816 /* 844 /*
817 * emulate part of the perl startup here. 845 * emulate part of the perl startup here.
818 */ 846 */
… …
845 { 873 {
846 dSP; 874 dSP;
847 UNOP myop; 875 UNOP myop;
848 876
849 Zero (&myop, 1, UNOP); 877 Zero (&myop, 1, UNOP);
850 myop.op_next = Nullop; 878 myop.op_next = Nullop;
879 myop.op_type = OP_ENTERSUB;
851 myop.op_flags = OPf_WANT_VOID; 880 myop.op_flags = OPf_WANT_VOID;
852 881
853 PUSHMARK (SP); 882 PUSHMARK (SP);
854 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 883 PUSHs ((SV *)coro->startcv);
855 PUTBACK; 884 PUTBACK;
856 PL_op = (OP *)&myop; 885 PL_op = (OP *)&myop;
857 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 886 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
858 SPAGAIN;
859 } 887 }
860 888
861 /* this newly created coroutine might be run on an existing cctx which most 889 /* this newly created coroutine might be run on an existing cctx which most
862 * likely was suspended in set_stacklevel, called from entersub. 890 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
863 * set_stacklevel doesn't do anything on return, but entersub does LEAVE,
864 * so we ENTER here for symmetry.
865 */ 891 */
866 SSL_HEAD; 892 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
893 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
894
895 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
896 coro_setup_op.op_next = PL_op;
897 coro_setup_op.op_type = OP_CUSTOM;
898 coro_setup_op.op_ppaddr = pp_slf;
899 /* no flags etc. required, as an init function won't be called */
900
901 PL_op = (OP *)&coro_setup_op;
902
903 /* copy throw, in case it was set before coro_setup */
904 CORO_THROW = coro->except;
867} 905}
868 906
869static void 907static void
870coro_destruct (pTHX_ struct coro *coro) 908coro_destruct (pTHX_ struct coro *coro)
871{ 909{
… …
895 933
896 SvREFCNT_dec (PL_diehook); 934 SvREFCNT_dec (PL_diehook);
897 SvREFCNT_dec (PL_warnhook); 935 SvREFCNT_dec (PL_warnhook);
898 936
899 SvREFCNT_dec (coro->saved_deffh); 937 SvREFCNT_dec (coro->saved_deffh);
900 SvREFCNT_dec (coro->throw); 938 SvREFCNT_dec (coro->rouse_cb);
939 SvREFCNT_dec (coro->invoke_cb);
940 SvREFCNT_dec (coro->invoke_av);
901 941
902 coro_destruct_stacks (aTHX); 942 coro_destruct_stacks (aTHX);
903} 943}
904 944
905INLINE void 945INLINE void
… …
915static int 955static int
916runops_trace (pTHX) 956runops_trace (pTHX)
917{ 957{
918 COP *oldcop = 0; 958 COP *oldcop = 0;
919 int oldcxix = -2; 959 int oldcxix = -2;
920 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 960 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
921 coro_cctx *cctx = coro->cctx; 961 coro_cctx *cctx = coro->cctx;
922 962
923 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 963 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
924 { 964 {
925 PERL_ASYNC_CHECK (); 965 PERL_ASYNC_CHECK ();
… …
992 SAVETMPS; 1032 SAVETMPS;
993 EXTEND (SP, 3); 1033 EXTEND (SP, 3);
994 PUSHMARK (SP); 1034 PUSHMARK (SP);
995 PUSHs (&PL_sv_yes); 1035 PUSHs (&PL_sv_yes);
996 PUSHs (fullname); 1036 PUSHs (fullname);
997 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1037 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
998 PUTBACK; 1038 PUTBACK;
999 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1039 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1000 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1040 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1001 SPAGAIN; 1041 SPAGAIN;
1002 FREETMPS; 1042 FREETMPS;
… …
1034 1074
1035 TAINT_NOT; 1075 TAINT_NOT;
1036 return 0; 1076 return 0;
1037} 1077}
1038 1078
1079static struct coro_cctx *cctx_ssl_cctx;
1080static struct CoroSLF cctx_ssl_frame;
1081
1039static void 1082static void
1040prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1083slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1041{ 1084{
1042 ta->prev = (struct coro *)cctx; 1085 ta->prev = (struct coro *)cctx_ssl_cctx;
1043 ta->next = 0; 1086 ta->next = 0;
1044} 1087}
1045 1088
1046/* inject a fake call to Coro::State::_cctx_init into the execution */ 1089static int
1047/* _cctx_init should be careful, as it could be called at almost any time */ 1090slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1048/* during execution of a perl program */ 1091{
1049/* also initialises PL_top_env */ 1092 *frame = cctx_ssl_frame;
1093
1094 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1095}
1096
1097/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1050static void NOINLINE 1098static void NOINLINE
1051cctx_prepare (pTHX_ coro_cctx *cctx) 1099cctx_prepare (pTHX_ coro_cctx *cctx)
1052{ 1100{
1053 dSP;
1054 UNOP myop;
1055
1056 PL_top_env = &PL_start_env; 1101 PL_top_env = &PL_start_env;
1057 1102
1058 if (cctx->flags & CC_TRACE) 1103 if (cctx->flags & CC_TRACE)
1059 PL_runops = runops_trace; 1104 PL_runops = runops_trace;
1060 1105
1061 Zero (&myop, 1, UNOP); 1106 /* we already must be executing an SLF op, there is no other valid way
1062 myop.op_next = PL_op; 1107 * that can lead to creation of a new cctx */
1063 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1108 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1109 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1064 1110
1065 PUSHMARK (SP); 1111 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1066 EXTEND (SP, 2); 1112 cctx_ssl_cctx = cctx;
1067 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1113 cctx_ssl_frame = slf_frame;
1068 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1114
1069 PUTBACK; 1115 slf_frame.prepare = slf_prepare_set_stacklevel;
1070 PL_op = (OP *)&myop; 1116 slf_frame.check = slf_check_set_stacklevel;
1071 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1072 SPAGAIN;
1073} 1117}
1074 1118
1075/* the tail of transfer: execute stuff we can only do after a transfer */ 1119/* the tail of transfer: execute stuff we can only do after a transfer */
1076INLINE void 1120INLINE void
1077transfer_tail (pTHX) 1121transfer_tail (pTHX)
1078{ 1122{
1079 struct coro *next = (struct coro *)transfer_next;
1080 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1081 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1082
1083 free_coro_mortal (aTHX); 1123 free_coro_mortal (aTHX);
1084 UNLOCK;
1085
1086 if (expect_false (next->throw))
1087 {
1088 SV *exception = sv_2mortal (next->throw);
1089
1090 next->throw = 0;
1091 sv_setsv (ERRSV, exception);
1092 croak (0);
1093 }
1094} 1124}
1095 1125
1096/* 1126/*
1097 * this is a _very_ stripped down perl interpreter ;) 1127 * this is a _very_ stripped down perl interpreter ;)
1098 */ 1128 */
… …
1105# endif 1135# endif
1106#endif 1136#endif
1107 { 1137 {
1108 dTHX; 1138 dTHX;
1109 1139
1110 /* entersub called ENTER, but we never 'returned', undo that here */ 1140 /* normally we would need to skip the entersub here */
1111 SSL_TAIL; 1141 /* not doing so will re-execute it, which is exactly what we want */
1112
1113 /* we now skip the op that did lead to transfer() */
1114 PL_op = PL_op->op_next; 1142 /* PL_nop = PL_nop->op_next */
1115 1143
1116 /* inject a fake subroutine call to cctx_init */ 1144 /* inject a fake subroutine call to cctx_init */
1117 cctx_prepare (aTHX_ (coro_cctx *)arg); 1145 cctx_prepare (aTHX_ (coro_cctx *)arg);
1118 1146
1119 /* cctx_run is the alternative tail of transfer() */ 1147 /* cctx_run is the alternative tail of transfer() */
1120 transfer_tail (aTHX); 1148 transfer_tail (aTHX);
1121 1149
1122 /* somebody or something will hit me for both perl_run and PL_restartop */ 1150 /* somebody or something will hit me for both perl_run and PL_restartop */
1123 PL_restartop = PL_op; 1151 PL_restartop = PL_op;
1124 perl_run (PL_curinterp); 1152 perl_run (PL_curinterp);
1153 /*
1154 * Unfortunately, there is no way to get at the return values of the
1155 * coro body here, as perl_run destroys these
1156 */
1125 1157
1126 /* 1158 /*
1127 * If perl-run returns we assume exit() was being called or the coro 1159 * If perl-run returns we assume exit() was being called or the coro
1128 * fell off the end, which seems to be the only valid (non-bug) 1160 * fell off the end, which seems to be the only valid (non-bug)
1129 * reason for perl_run to return. We try to exit by jumping to the 1161 * reason for perl_run to return. We try to exit by jumping to the
… …
1280/** coroutine switching *****************************************************/ 1312/** coroutine switching *****************************************************/
1281 1313
1282static void 1314static void
1283transfer_check (pTHX_ struct coro *prev, struct coro *next) 1315transfer_check (pTHX_ struct coro *prev, struct coro *next)
1284{ 1316{
1317 /* TODO: throwing up here is considered harmful */
1318
1285 if (expect_true (prev != next)) 1319 if (expect_true (prev != next))
1286 { 1320 {
1287 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1321 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1288 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1322 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1289 1323
1290 if (expect_false (next->flags & CF_RUNNING)) 1324 if (expect_false (next->flags & CF_RUNNING))
1291 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1325 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1292 1326
1293 if (expect_false (next->flags & CF_DESTROYED)) 1327 if (expect_false (next->flags & CF_DESTROYED))
1294 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1328 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1295 1329
1296#if !PERL_VERSION_ATLEAST (5,10,0) 1330#if !PERL_VERSION_ATLEAST (5,10,0)
1297 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1331 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1298 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1332 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1299#endif 1333#endif
1300 } 1334 }
1301} 1335}
1302 1336
1303/* always use the TRANSFER macro */ 1337/* always use the TRANSFER macro */
1304static void NOINLINE 1338static void NOINLINE /* noinline so we have a fixed stackframe */
1305transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1339transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1306{ 1340{
1307 dSTACKLEVEL; 1341 dSTACKLEVEL;
1308 1342
1309 /* sometimes transfer is only called to set idle_sp */ 1343 /* sometimes transfer is only called to set idle_sp */
… …
1324 prev->flags |= CF_RUNNING; 1358 prev->flags |= CF_RUNNING;
1325 } 1359 }
1326 1360
1327 prev->flags &= ~CF_RUNNING; 1361 prev->flags &= ~CF_RUNNING;
1328 next->flags |= CF_RUNNING; 1362 next->flags |= CF_RUNNING;
1329
1330 LOCK;
1331 1363
1332 /* first get rid of the old state */ 1364 /* first get rid of the old state */
1333 save_perl (aTHX_ prev); 1365 save_perl (aTHX_ prev);
1334 1366
1335 if (expect_false (next->flags & CF_NEW)) 1367 if (expect_false (next->flags & CF_NEW))
… …
1349 prev__cctx->idle_sp == STACKLEVEL 1381 prev__cctx->idle_sp == STACKLEVEL
1350 && !(prev__cctx->flags & CC_TRACE) 1382 && !(prev__cctx->flags & CC_TRACE)
1351 && !force_cctx 1383 && !force_cctx
1352 )) 1384 ))
1353 { 1385 {
1354 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1386 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1355 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1387 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1356 1388
1357 prev->cctx = 0; 1389 prev->cctx = 0;
1358 1390
1359 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1391 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
… …
1367 1399
1368 ++next->usecount; 1400 ++next->usecount;
1369 1401
1370 if (expect_true (!next->cctx)) 1402 if (expect_true (!next->cctx))
1371 next->cctx = cctx_get (aTHX); 1403 next->cctx = cctx_get (aTHX);
1372
1373 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1374 transfer_next = next;
1375 1404
1376 if (expect_false (prev__cctx != next->cctx)) 1405 if (expect_false (prev__cctx != next->cctx))
1377 { 1406 {
1378 prev__cctx->top_env = PL_top_env; 1407 prev__cctx->top_env = PL_top_env;
1379 PL_top_env = next->cctx->top_env; 1408 PL_top_env = next->cctx->top_env;
… …
1393coro_state_destroy (pTHX_ struct coro *coro) 1422coro_state_destroy (pTHX_ struct coro *coro)
1394{ 1423{
1395 if (coro->flags & CF_DESTROYED) 1424 if (coro->flags & CF_DESTROYED)
1396 return 0; 1425 return 0;
1397 1426
1427 if (coro->on_destroy)
1428 coro->on_destroy (aTHX_ coro);
1429
1398 coro->flags |= CF_DESTROYED; 1430 coro->flags |= CF_DESTROYED;
1399 1431
1400 if (coro->flags & CF_READY) 1432 if (coro->flags & CF_READY)
1401 { 1433 {
1402 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1434 /* reduce nready, as destroying a ready coro effectively unreadies it */
1403 /* alternative: look through all ready queues and remove the coro */ 1435 /* alternative: look through all ready queues and remove the coro */
1404 LOCK;
1405 --coro_nready; 1436 --coro_nready;
1406 UNLOCK;
1407 } 1437 }
1408 else 1438 else
1409 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1439 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1410 1440
1411 if (coro->mainstack && coro->mainstack != main_mainstack) 1441 if (coro->mainstack && coro->mainstack != main_mainstack)
1412 { 1442 {
1413 struct coro temp; 1443 struct coro temp;
1414 1444
1415 if (coro->flags & CF_RUNNING) 1445 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1416 croak ("FATAL: tried to destroy currently running coroutine");
1417 1446
1418 save_perl (aTHX_ &temp); 1447 save_perl (aTHX_ &temp);
1419 load_perl (aTHX_ coro); 1448 load_perl (aTHX_ coro);
1420 1449
1421 coro_destruct (aTHX_ coro); 1450 coro_destruct (aTHX_ coro);
… …
1424 1453
1425 coro->slot = 0; 1454 coro->slot = 0;
1426 } 1455 }
1427 1456
1428 cctx_destroy (coro->cctx); 1457 cctx_destroy (coro->cctx);
1458 SvREFCNT_dec (coro->startcv);
1429 SvREFCNT_dec (coro->args); 1459 SvREFCNT_dec (coro->args);
1460 SvREFCNT_dec (CORO_THROW);
1430 1461
1431 if (coro->next) coro->next->prev = coro->prev; 1462 if (coro->next) coro->next->prev = coro->prev;
1432 if (coro->prev) coro->prev->next = coro->next; 1463 if (coro->prev) coro->prev->next = coro->next;
1433 if (coro == coro_first) coro_first = coro->next; 1464 if (coro == coro_first) coro_first = coro->next;
1434 1465
… …
1472# define MGf_DUP 0 1503# define MGf_DUP 0
1473#endif 1504#endif
1474}; 1505};
1475 1506
1476static void 1507static void
1477prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1508prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1478{ 1509{
1479 ta->prev = SvSTATE (prev_sv); 1510 ta->prev = SvSTATE (prev_sv);
1480 ta->next = SvSTATE (next_sv); 1511 ta->next = SvSTATE (next_sv);
1481 TRANSFER_CHECK (*ta); 1512 TRANSFER_CHECK (*ta);
1482} 1513}
1483 1514
1484static void 1515static void
1485api_transfer (SV *prev_sv, SV *next_sv) 1516api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1486{ 1517{
1487 dTHX;
1488 struct transfer_args ta; 1518 struct coro_transfer_args ta;
1489 1519
1490 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1520 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1491 TRANSFER (ta, 1); 1521 TRANSFER (ta, 1);
1492} 1522}
1493 1523
1524/*****************************************************************************/
1525/* gensub: simple closure generation utility */
1526
1527#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1528
1529/* create a closure from XS, returns a code reference */
1530/* the arg can be accessed via GENSUB_ARG from the callback */
1531/* the callback must use dXSARGS/XSRETURN */
1532static SV *
1533gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1534{
1535 CV *cv = (CV *)newSV (0);
1536
1537 sv_upgrade ((SV *)cv, SVt_PVCV);
1538
1539 CvANON_on (cv);
1540 CvISXSUB_on (cv);
1541 CvXSUB (cv) = xsub;
1542 GENSUB_ARG = arg;
1543
1544 return newRV_noinc ((SV *)cv);
1545}
1546
1494/** Coro ********************************************************************/ 1547/** Coro ********************************************************************/
1495 1548
1496static void 1549INLINE void
1497coro_enq (pTHX_ SV *coro_sv) 1550coro_enq (pTHX_ struct coro *coro)
1498{ 1551{
1499 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1552 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1500} 1553}
1501 1554
1502static SV * 1555INLINE SV *
1503coro_deq (pTHX) 1556coro_deq (pTHX)
1504{ 1557{
1505 int prio; 1558 int prio;
1506 1559
1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1560 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1510 1563
1511 return 0; 1564 return 0;
1512} 1565}
1513 1566
1514static int 1567static int
1515api_ready (SV *coro_sv) 1568api_ready (pTHX_ SV *coro_sv)
1516{ 1569{
1517 dTHX;
1518 struct coro *coro; 1570 struct coro *coro;
1519 SV *sv_hook; 1571 SV *sv_hook;
1520 void (*xs_hook)(void); 1572 void (*xs_hook)(void);
1521 1573
1522 if (SvROK (coro_sv)) 1574 if (SvROK (coro_sv))
… …
1527 if (coro->flags & CF_READY) 1579 if (coro->flags & CF_READY)
1528 return 0; 1580 return 0;
1529 1581
1530 coro->flags |= CF_READY; 1582 coro->flags |= CF_READY;
1531 1583
1532 LOCK;
1533
1534 sv_hook = coro_nready ? 0 : coro_readyhook; 1584 sv_hook = coro_nready ? 0 : coro_readyhook;
1535 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1585 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1536 1586
1537 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1587 coro_enq (aTHX_ coro);
1538 ++coro_nready; 1588 ++coro_nready;
1539 1589
1540 UNLOCK;
1541
1542 if (sv_hook) 1590 if (sv_hook)
1543 { 1591 {
1544 dSP; 1592 dSP;
1545 1593
1546 ENTER; 1594 ENTER;
1547 SAVETMPS; 1595 SAVETMPS;
1548 1596
1549 PUSHMARK (SP); 1597 PUSHMARK (SP);
1550 PUTBACK; 1598 PUTBACK;
1551 call_sv (sv_hook, G_DISCARD); 1599 call_sv (sv_hook, G_VOID | G_DISCARD);
1552 SPAGAIN;
1553 1600
1554 FREETMPS; 1601 FREETMPS;
1555 LEAVE; 1602 LEAVE;
1556 } 1603 }
1557 1604
… …
1560 1607
1561 return 1; 1608 return 1;
1562} 1609}
1563 1610
1564static int 1611static int
1565api_is_ready (SV *coro_sv) 1612api_is_ready (pTHX_ SV *coro_sv)
1566{ 1613{
1567 dTHX;
1568
1569 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1614 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1570} 1615}
1571 1616
1572INLINE void 1617INLINE void
1573prepare_schedule (pTHX_ struct transfer_args *ta) 1618prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1574{ 1619{
1575 SV *prev_sv, *next_sv; 1620 SV *prev_sv, *next_sv;
1576 1621
1577 for (;;) 1622 for (;;)
1578 { 1623 {
1579 LOCK;
1580 next_sv = coro_deq (aTHX); 1624 next_sv = coro_deq (aTHX);
1581 1625
1582 /* nothing to schedule: call the idle handler */ 1626 /* nothing to schedule: call the idle handler */
1583 if (expect_false (!next_sv)) 1627 if (expect_false (!next_sv))
1584 { 1628 {
1585 dSP; 1629 dSP;
1586 UNLOCK;
1587 1630
1588 ENTER; 1631 ENTER;
1589 SAVETMPS; 1632 SAVETMPS;
1590 1633
1591 PUSHMARK (SP); 1634 PUSHMARK (SP);
1592 PUTBACK; 1635 PUTBACK;
1593 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1636 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1594 SPAGAIN;
1595 1637
1596 FREETMPS; 1638 FREETMPS;
1597 LEAVE; 1639 LEAVE;
1598 continue; 1640 continue;
1599 } 1641 }
1600 1642
1601 ta->next = SvSTATE (next_sv); 1643 ta->next = SvSTATE_hv (next_sv);
1602 1644
1603 /* cannot transfer to destroyed coros, skip and look for next */ 1645 /* cannot transfer to destroyed coros, skip and look for next */
1604 if (expect_false (ta->next->flags & CF_DESTROYED)) 1646 if (expect_false (ta->next->flags & CF_DESTROYED))
1605 { 1647 {
1606 UNLOCK;
1607 SvREFCNT_dec (next_sv); 1648 SvREFCNT_dec (next_sv);
1608 /* coro_nready has already been taken care of by destroy */ 1649 /* coro_nready has already been taken care of by destroy */
1609 continue; 1650 continue;
1610 } 1651 }
1611 1652
1612 --coro_nready; 1653 --coro_nready;
1613 UNLOCK;
1614 break; 1654 break;
1615 } 1655 }
1616 1656
1617 /* free this only after the transfer */ 1657 /* free this only after the transfer */
1618 prev_sv = SvRV (coro_current); 1658 prev_sv = SvRV (coro_current);
1619 ta->prev = SvSTATE (prev_sv); 1659 ta->prev = SvSTATE_hv (prev_sv);
1620 TRANSFER_CHECK (*ta); 1660 TRANSFER_CHECK (*ta);
1621 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1661 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1622 ta->next->flags &= ~CF_READY; 1662 ta->next->flags &= ~CF_READY;
1623 SvRV_set (coro_current, next_sv); 1663 SvRV_set (coro_current, next_sv);
1624 1664
1625 LOCK;
1626 free_coro_mortal (aTHX); 1665 free_coro_mortal (aTHX);
1627 coro_mortal = prev_sv; 1666 coro_mortal = prev_sv;
1628 UNLOCK;
1629} 1667}
1630 1668
1631INLINE void 1669INLINE void
1632prepare_cede (pTHX_ struct transfer_args *ta) 1670prepare_cede (pTHX_ struct coro_transfer_args *ta)
1633{ 1671{
1634 api_ready (coro_current); 1672 api_ready (aTHX_ coro_current);
1635 prepare_schedule (aTHX_ ta); 1673 prepare_schedule (aTHX_ ta);
1636} 1674}
1637 1675
1676INLINE void
1677prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1678{
1679 SV *prev = SvRV (coro_current);
1680
1681 if (coro_nready)
1682 {
1683 prepare_schedule (aTHX_ ta);
1684 api_ready (aTHX_ prev);
1685 }
1686 else
1687 prepare_nop (aTHX_ ta);
1688}
1689
1690static void
1691api_schedule (pTHX)
1692{
1693 struct coro_transfer_args ta;
1694
1695 prepare_schedule (aTHX_ &ta);
1696 TRANSFER (ta, 1);
1697}
1698
1638static int 1699static int
1639prepare_cede_notself (pTHX_ struct transfer_args *ta) 1700api_cede (pTHX)
1640{ 1701{
1641 if (coro_nready) 1702 struct coro_transfer_args ta;
1642 { 1703
1643 SV *prev = SvRV (coro_current);
1644 prepare_schedule (aTHX_ ta); 1704 prepare_cede (aTHX_ &ta);
1645 api_ready (prev); 1705
1706 if (expect_true (ta.prev != ta.next))
1707 {
1708 TRANSFER (ta, 1);
1646 return 1; 1709 return 1;
1647 } 1710 }
1648 else 1711 else
1649 return 0; 1712 return 0;
1650} 1713}
1651 1714
1652static void
1653api_schedule (void)
1654{
1655 dTHX;
1656 struct transfer_args ta;
1657
1658 prepare_schedule (aTHX_ &ta);
1659 TRANSFER (ta, 1);
1660}
1661
1662static int 1715static int
1663api_cede (void) 1716api_cede_notself (pTHX)
1664{ 1717{
1665 dTHX; 1718 if (coro_nready)
1719 {
1666 struct transfer_args ta; 1720 struct coro_transfer_args ta;
1667 1721
1668 prepare_cede (aTHX_ &ta); 1722 prepare_cede_notself (aTHX_ &ta);
1669
1670 if (expect_true (ta.prev != ta.next))
1671 {
1672 TRANSFER (ta, 1); 1723 TRANSFER (ta, 1);
1673 return 1; 1724 return 1;
1674 } 1725 }
1675 else 1726 else
1676 return 0; 1727 return 0;
1677} 1728}
1678 1729
1679static int 1730static void
1680api_cede_notself (void)
1681{
1682 dTHX;
1683 struct transfer_args ta;
1684
1685 if (prepare_cede_notself (aTHX_ &ta))
1686 {
1687 TRANSFER (ta, 1);
1688 return 1;
1689 }
1690 else
1691 return 0;
1692}
1693
1694static void
1695api_trace (SV *coro_sv, int flags) 1731api_trace (pTHX_ SV *coro_sv, int flags)
1696{ 1732{
1697 dTHX;
1698 struct coro *coro = SvSTATE (coro_sv); 1733 struct coro *coro = SvSTATE (coro_sv);
1699 1734
1700 if (flags & CC_TRACE) 1735 if (flags & CC_TRACE)
1701 { 1736 {
1702 if (!coro->cctx) 1737 if (!coro->cctx)
1703 coro->cctx = cctx_new_run (); 1738 coro->cctx = cctx_new_run ();
1704 else if (!(coro->cctx->flags & CC_TRACE)) 1739 else if (!(coro->cctx->flags & CC_TRACE))
1705 croak ("cannot enable tracing on coroutine with custom stack"); 1740 croak ("cannot enable tracing on coroutine with custom stack,");
1706 1741
1707 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1742 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1708 } 1743 }
1709 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1744 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1710 { 1745 {
… …
1715 else 1750 else
1716 coro->slot->runops = RUNOPS_DEFAULT; 1751 coro->slot->runops = RUNOPS_DEFAULT;
1717 } 1752 }
1718} 1753}
1719 1754
1720#if 0 1755/*****************************************************************************/
1756/* async pool handler */
1757
1721static int 1758static int
1722coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1759slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1723{ 1760{
1724 AV *padlist; 1761 HV *hv = (HV *)SvRV (coro_current);
1725 AV *av = (AV *)mg->mg_obj; 1762 struct coro *coro = (struct coro *)frame->data;
1726 1763
1727 abort (); 1764 if (!coro->invoke_cb)
1765 return 1; /* loop till we have invoke */
1766 else
1767 {
1768 hv_store (hv, "desc", sizeof ("desc") - 1,
1769 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1770
1771 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1772
1773 {
1774 dSP;
1775 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1776 PUTBACK;
1777 }
1778
1779 SvREFCNT_dec (GvAV (PL_defgv));
1780 GvAV (PL_defgv) = coro->invoke_av;
1781 coro->invoke_av = 0;
1782
1783 return 0;
1784 }
1785}
1786
1787static void
1788slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1789{
1790 HV *hv = (HV *)SvRV (coro_current);
1791 struct coro *coro = SvSTATE_hv ((SV *)hv);
1792
1793 if (expect_true (coro->saved_deffh))
1794 {
1795 /* subsequent iteration */
1796 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1797 coro->saved_deffh = 0;
1798
1799 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1800 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1801 {
1802 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1803 coro->invoke_av = newAV ();
1804
1805 frame->prepare = prepare_nop;
1806 }
1807 else
1808 {
1809 av_clear (GvAV (PL_defgv));
1810 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1811
1812 coro->prio = 0;
1813
1814 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1815 api_trace (aTHX_ coro_current, 0);
1816
1817 frame->prepare = prepare_schedule;
1818 av_push (av_async_pool, SvREFCNT_inc (hv));
1819 }
1820 }
1821 else
1822 {
1823 /* first iteration, simply fall through */
1824 frame->prepare = prepare_nop;
1825 }
1826
1827 frame->check = slf_check_pool_handler;
1828 frame->data = (void *)coro;
1829}
1830
1831/*****************************************************************************/
1832/* rouse callback */
1833
1834#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1835
1836static void
1837coro_rouse_callback (pTHX_ CV *cv)
1838{
1839 dXSARGS;
1840 SV *data = (SV *)GENSUB_ARG;
1841
1842 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1843 {
1844 /* first call, set args */
1845 AV *av = newAV ();
1846 SV *coro = SvRV (data);
1847
1848 SvRV_set (data, (SV *)av);
1849 api_ready (aTHX_ coro);
1850 SvREFCNT_dec (coro);
1851
1852 /* better take a full copy of the arguments */
1853 while (items--)
1854 av_store (av, items, newSVsv (ST (items)));
1855 }
1856
1857 XSRETURN_EMPTY;
1858}
1859
1860static int
1861slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1862{
1863 SV *data = (SV *)frame->data;
1864
1865 if (CORO_THROW)
1866 return 0;
1867
1868 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1869 return 1;
1870
1871 /* now push all results on the stack */
1872 {
1873 dSP;
1874 AV *av = (AV *)SvRV (data);
1875 int i;
1876
1877 EXTEND (SP, AvFILLp (av) + 1);
1878 for (i = 0; i <= AvFILLp (av); ++i)
1879 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1880
1881 /* we have stolen the elements, so ste length to zero and free */
1882 AvFILLp (av) = -1;
1883 av_undef (av);
1884
1885 PUTBACK;
1886 }
1728 1887
1729 return 0; 1888 return 0;
1730} 1889}
1731 1890
1732static MGVTBL coro_gensub_vtbl = { 1891static void
1733 0, 0, 0, 0, 1892slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1734 coro_gensub_free 1893{
1735}; 1894 SV *cb;
1736#endif 1895
1896 if (items)
1897 cb = arg [0];
1898 else
1899 {
1900 struct coro *coro = SvSTATE_current;
1901
1902 if (!coro->rouse_cb)
1903 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1904
1905 cb = sv_2mortal (coro->rouse_cb);
1906 coro->rouse_cb = 0;
1907 }
1908
1909 if (!SvROK (cb)
1910 || SvTYPE (SvRV (cb)) != SVt_PVCV
1911 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1912 croak ("Coro::rouse_wait called with illegal callback argument,");
1913
1914 {
1915 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1916 SV *data = (SV *)GENSUB_ARG;
1917
1918 frame->data = (void *)data;
1919 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1920 frame->check = slf_check_rouse_wait;
1921 }
1922}
1923
1924static SV *
1925coro_new_rouse_cb (pTHX)
1926{
1927 HV *hv = (HV *)SvRV (coro_current);
1928 struct coro *coro = SvSTATE_hv (hv);
1929 SV *data = newRV_inc ((SV *)hv);
1930 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1931
1932 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1933 SvREFCNT_dec (data); /* magicext increases the refcount */
1934
1935 SvREFCNT_dec (coro->rouse_cb);
1936 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1937
1938 return cb;
1939}
1940
1941/*****************************************************************************/
1942/* schedule-like-function opcode (SLF) */
1943
1944static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1945static const CV *slf_cv;
1946static SV **slf_argv;
1947static int slf_argc, slf_arga; /* count, allocated */
1948static I32 slf_ax; /* top of stack, for restore */
1949
1950/* this restores the stack in the case we patched the entersub, to */
1951/* recreate the stack frame as perl will on following calls */
1952/* since entersub cleared the stack */
1953static OP *
1954pp_restore (pTHX)
1955{
1956 int i;
1957 SV **SP = PL_stack_base + slf_ax;
1958
1959 PUSHMARK (SP);
1960
1961 EXTEND (SP, slf_argc + 1);
1962
1963 for (i = 0; i < slf_argc; ++i)
1964 PUSHs (sv_2mortal (slf_argv [i]));
1965
1966 PUSHs ((SV *)CvGV (slf_cv));
1967
1968 RETURNOP (slf_restore.op_first);
1969}
1970
1971static void
1972slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1973{
1974 SV **arg = (SV **)slf_frame.data;
1975
1976 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1977}
1978
1979static void
1980slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1981{
1982 if (items != 2)
1983 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1984
1985 frame->prepare = slf_prepare_transfer;
1986 frame->check = slf_check_nop;
1987 frame->data = (void *)arg; /* let's hope it will stay valid */
1988}
1989
1990static void
1991slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1992{
1993 frame->prepare = prepare_schedule;
1994 frame->check = slf_check_nop;
1995}
1996
1997static void
1998slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1999{
2000 frame->prepare = prepare_cede;
2001 frame->check = slf_check_nop;
2002}
2003
2004static void
2005slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2006{
2007 frame->prepare = prepare_cede_notself;
2008 frame->check = slf_check_nop;
2009}
2010
2011/*
2012 * these not obviously related functions are all rolled into one
2013 * function to increase chances that they all will call transfer with the same
2014 * stack offset
2015 * SLF stands for "schedule-like-function".
2016 */
2017static OP *
2018pp_slf (pTHX)
2019{
2020 I32 checkmark; /* mark SP to see how many elements check has pushed */
2021
2022 /* set up the slf frame, unless it has already been set-up */
2023 /* the latter happens when a new coro has been started */
2024 /* or when a new cctx was attached to an existing coroutine */
2025 if (expect_true (!slf_frame.prepare))
2026 {
2027 /* first iteration */
2028 dSP;
2029 SV **arg = PL_stack_base + TOPMARK + 1;
2030 int items = SP - arg; /* args without function object */
2031 SV *gv = *sp;
2032
2033 /* do a quick consistency check on the "function" object, and if it isn't */
2034 /* for us, divert to the real entersub */
2035 if (SvTYPE (gv) != SVt_PVGV
2036 || !GvCV (gv)
2037 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2038 return PL_ppaddr[OP_ENTERSUB](aTHX);
2039
2040 if (!(PL_op->op_flags & OPf_STACKED))
2041 {
2042 /* ampersand-form of call, use @_ instead of stack */
2043 AV *av = GvAV (PL_defgv);
2044 arg = AvARRAY (av);
2045 items = AvFILLp (av) + 1;
2046 }
2047
2048 /* now call the init function, which needs to set up slf_frame */
2049 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2050 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2051
2052 /* pop args */
2053 SP = PL_stack_base + POPMARK;
2054
2055 PUTBACK;
2056 }
2057
2058 /* now that we have a slf_frame, interpret it! */
2059 /* we use a callback system not to make the code needlessly */
2060 /* complicated, but so we can run multiple perl coros from one cctx */
2061
2062 do
2063 {
2064 struct coro_transfer_args ta;
2065
2066 slf_frame.prepare (aTHX_ &ta);
2067 TRANSFER (ta, 0);
2068
2069 checkmark = PL_stack_sp - PL_stack_base;
2070 }
2071 while (slf_frame.check (aTHX_ &slf_frame));
2072
2073 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2074
2075 /* exception handling */
2076 if (expect_false (CORO_THROW))
2077 {
2078 SV *exception = sv_2mortal (CORO_THROW);
2079
2080 CORO_THROW = 0;
2081 sv_setsv (ERRSV, exception);
2082 croak (0);
2083 }
2084
2085 /* return value handling - mostly like entersub */
2086 /* make sure we put something on the stack in scalar context */
2087 if (GIMME_V == G_SCALAR)
2088 {
2089 dSP;
2090 SV **bot = PL_stack_base + checkmark;
2091
2092 if (sp == bot) /* too few, push undef */
2093 bot [1] = &PL_sv_undef;
2094 else if (sp != bot + 1) /* too many, take last one */
2095 bot [1] = *sp;
2096
2097 SP = bot + 1;
2098
2099 PUTBACK;
2100 }
2101
2102 return NORMAL;
2103}
2104
2105static void
2106api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2107{
2108 int i;
2109 SV **arg = PL_stack_base + ax;
2110 int items = PL_stack_sp - arg + 1;
2111
2112 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2113
2114 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2115 && PL_op->op_ppaddr != pp_slf)
2116 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2117
2118 CvFLAGS (cv) |= CVf_SLF;
2119 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2120 slf_cv = cv;
2121
2122 /* we patch the op, and then re-run the whole call */
2123 /* we have to put the same argument on the stack for this to work */
2124 /* and this will be done by pp_restore */
2125 slf_restore.op_next = (OP *)&slf_restore;
2126 slf_restore.op_type = OP_CUSTOM;
2127 slf_restore.op_ppaddr = pp_restore;
2128 slf_restore.op_first = PL_op;
2129
2130 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2131
2132 if (PL_op->op_flags & OPf_STACKED)
2133 {
2134 if (items > slf_arga)
2135 {
2136 slf_arga = items;
2137 free (slf_argv);
2138 slf_argv = malloc (slf_arga * sizeof (SV *));
2139 }
2140
2141 slf_argc = items;
2142
2143 for (i = 0; i < items; ++i)
2144 slf_argv [i] = SvREFCNT_inc (arg [i]);
2145 }
2146 else
2147 slf_argc = 0;
2148
2149 PL_op->op_ppaddr = pp_slf;
2150 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2151
2152 PL_op = (OP *)&slf_restore;
2153}
1737 2154
1738/*****************************************************************************/ 2155/*****************************************************************************/
1739/* PerlIO::cede */ 2156/* PerlIO::cede */
1740 2157
1741typedef struct 2158typedef struct
… …
1769 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2186 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1770 double now = nvtime (); 2187 double now = nvtime ();
1771 2188
1772 if (now >= self->next) 2189 if (now >= self->next)
1773 { 2190 {
1774 api_cede (); 2191 api_cede (aTHX);
1775 self->next = now + self->every; 2192 self->next = now + self->every;
1776 } 2193 }
1777 2194
1778 return PerlIOBuf_flush (aTHX_ f); 2195 return PerlIOBuf_flush (aTHX_ f);
1779} 2196}
… …
1809 PerlIOBuf_get_cnt, 2226 PerlIOBuf_get_cnt,
1810 PerlIOBuf_set_ptrcnt, 2227 PerlIOBuf_set_ptrcnt,
1811}; 2228};
1812 2229
1813/*****************************************************************************/ 2230/*****************************************************************************/
2231/* Coro::Semaphore & Coro::Signal */
1814 2232
1815static const CV *ssl_cv; /* for quick consistency check */
1816
1817static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1818static SV *ssl_arg0;
1819static SV *ssl_arg1;
1820
1821/* this restores the stack in the case we patched the entersub, to */
1822/* recreate the stack frame as perl will on following calls */
1823/* since entersub cleared the stack */
1824static OP * 2233static SV *
1825pp_restore (pTHX) 2234coro_waitarray_new (pTHX_ int count)
1826{ 2235{
2236 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2237 AV *av = newAV ();
2238 SV **ary;
2239
2240 /* unfortunately, building manually saves memory */
2241 Newx (ary, 2, SV *);
2242 AvALLOC (av) = ary;
2243 /*AvARRAY (av) = ary;*/
2244 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2245 AvMAX (av) = 1;
2246 AvFILLp (av) = 0;
2247 ary [0] = newSViv (count);
2248
2249 return newRV_noinc ((SV *)av);
2250}
2251
2252/* semaphore */
2253
2254static void
2255coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2256{
2257 SV *count_sv = AvARRAY (av)[0];
2258 IV count = SvIVX (count_sv);
2259
2260 count += adjust;
2261 SvIVX (count_sv) = count;
2262
2263 /* now wake up as many waiters as are expected to lock */
2264 while (count > 0 && AvFILLp (av) > 0)
2265 {
2266 SV *cb;
2267
2268 /* swap first two elements so we can shift a waiter */
2269 AvARRAY (av)[0] = AvARRAY (av)[1];
2270 AvARRAY (av)[1] = count_sv;
2271 cb = av_shift (av);
2272
2273 if (SvOBJECT (cb))
2274 {
2275 api_ready (aTHX_ cb);
2276 --count;
2277 }
2278 else if (SvTYPE (cb) == SVt_PVCV)
2279 {
2280 dSP;
2281 PUSHMARK (SP);
2282 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2283 PUTBACK;
2284 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2285 }
2286
2287 SvREFCNT_dec (cb);
2288 }
2289}
2290
2291static void
2292coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2293{
2294 /* call $sem->adjust (0) to possibly wake up some other waiters */
2295 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2296}
2297
2298static int
2299slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2300{
2301 AV *av = (AV *)frame->data;
2302 SV *count_sv = AvARRAY (av)[0];
2303
2304 /* if we are about to throw, don't actually acquire the lock, just throw */
2305 if (CORO_THROW)
2306 return 0;
2307 else if (SvIVX (count_sv) > 0)
2308 {
2309 SvSTATE_current->on_destroy = 0;
2310
2311 if (acquire)
2312 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2313 else
2314 coro_semaphore_adjust (aTHX_ av, 0);
2315
2316 return 0;
2317 }
2318 else
2319 {
2320 int i;
2321 /* if we were woken up but can't down, we look through the whole */
2322 /* waiters list and only add us if we aren't in there already */
2323 /* this avoids some degenerate memory usage cases */
2324
2325 for (i = 1; i <= AvFILLp (av); ++i)
2326 if (AvARRAY (av)[i] == SvRV (coro_current))
2327 return 1;
2328
2329 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2330 return 1;
2331 }
2332}
2333
2334static int
2335slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2336{
2337 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2338}
2339
2340static int
2341slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2342{
2343 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2344}
2345
2346static void
2347slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2348{
2349 AV *av = (AV *)SvRV (arg [0]);
2350
2351 if (SvIVX (AvARRAY (av)[0]) > 0)
2352 {
2353 frame->data = (void *)av;
2354 frame->prepare = prepare_nop;
2355 }
2356 else
2357 {
2358 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2359
2360 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2361 frame->prepare = prepare_schedule;
2362
2363 /* to avoid race conditions when a woken-up coro gets terminated */
2364 /* we arrange for a temporary on_destroy that calls adjust (0) */
2365 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2366 }
2367}
2368
2369static void
2370slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2371{
2372 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2373 frame->check = slf_check_semaphore_down;
2374}
2375
2376static void
2377slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2378{
2379 if (items >= 2)
2380 {
2381 /* callback form */
2382 AV *av = (AV *)SvRV (arg [0]);
2383 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2384
2385 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2386
2387 if (SvIVX (AvARRAY (av)[0]) > 0)
2388 coro_semaphore_adjust (aTHX_ av, 0);
2389
2390 frame->prepare = prepare_nop;
2391 frame->check = slf_check_nop;
2392 }
2393 else
2394 {
2395 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2396 frame->check = slf_check_semaphore_wait;
2397 }
2398}
2399
2400/* signal */
2401
2402static void
2403coro_signal_wake (pTHX_ AV *av, int count)
2404{
2405 SvIVX (AvARRAY (av)[0]) = 0;
2406
2407 /* now signal count waiters */
2408 while (count > 0 && AvFILLp (av) > 0)
2409 {
2410 SV *cb;
2411
2412 /* swap first two elements so we can shift a waiter */
2413 cb = AvARRAY (av)[0];
2414 AvARRAY (av)[0] = AvARRAY (av)[1];
2415 AvARRAY (av)[1] = cb;
2416
2417 cb = av_shift (av);
2418
2419 api_ready (aTHX_ cb);
2420 sv_setiv (cb, 0); /* signal waiter */
2421 SvREFCNT_dec (cb);
2422
2423 --count;
2424 }
2425}
2426
2427static int
2428slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2429{
2430 /* if we are about to throw, also stop waiting */
2431 return SvROK ((SV *)frame->data) && !CORO_THROW;
2432}
2433
2434static void
2435slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2436{
2437 AV *av = (AV *)SvRV (arg [0]);
2438
2439 if (SvIVX (AvARRAY (av)[0]))
2440 {
2441 SvIVX (AvARRAY (av)[0]) = 0;
2442 frame->prepare = prepare_nop;
2443 frame->check = slf_check_nop;
2444 }
2445 else
2446 {
2447 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2448
2449 av_push (av, waiter);
2450
2451 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2452 frame->prepare = prepare_schedule;
2453 frame->check = slf_check_signal_wait;
2454 }
2455}
2456
2457/*****************************************************************************/
2458/* Coro::AIO */
2459
2460#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2461
2462/* helper storage struct */
2463struct io_state
2464{
2465 int errorno;
2466 I32 laststype; /* U16 in 5.10.0 */
2467 int laststatval;
2468 Stat_t statcache;
2469};
2470
2471static void
2472coro_aio_callback (pTHX_ CV *cv)
2473{
2474 dXSARGS;
2475 AV *state = (AV *)GENSUB_ARG;
2476 SV *coro = av_pop (state);
2477 SV *data_sv = newSV (sizeof (struct io_state));
2478
2479 av_extend (state, items - 1);
2480
2481 sv_upgrade (data_sv, SVt_PV);
2482 SvCUR_set (data_sv, sizeof (struct io_state));
2483 SvPOK_only (data_sv);
2484
2485 {
2486 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2487
2488 data->errorno = errno;
2489 data->laststype = PL_laststype;
2490 data->laststatval = PL_laststatval;
2491 data->statcache = PL_statcache;
2492 }
2493
2494 /* now build the result vector out of all the parameters and the data_sv */
2495 {
2496 int i;
2497
2498 for (i = 0; i < items; ++i)
2499 av_push (state, SvREFCNT_inc_NN (ST (i)));
2500 }
2501
2502 av_push (state, data_sv);
2503
2504 api_ready (aTHX_ coro);
2505 SvREFCNT_dec (coro);
2506 SvREFCNT_dec ((AV *)state);
2507}
2508
2509static int
2510slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2511{
2512 AV *state = (AV *)frame->data;
2513
2514 /* if we are about to throw, return early */
2515 /* this does not cancel the aio request, but at least */
2516 /* it quickly returns */
2517 if (CORO_THROW)
2518 return 0;
2519
2520 /* one element that is an RV? repeat! */
2521 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2522 return 1;
2523
2524 /* restore status */
2525 {
2526 SV *data_sv = av_pop (state);
2527 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2528
2529 errno = data->errorno;
2530 PL_laststype = data->laststype;
2531 PL_laststatval = data->laststatval;
2532 PL_statcache = data->statcache;
2533
2534 SvREFCNT_dec (data_sv);
2535 }
2536
2537 /* push result values */
2538 {
1827 dSP; 2539 dSP;
2540 int i;
1828 2541
2542 EXTEND (SP, AvFILLp (state) + 1);
2543 for (i = 0; i <= AvFILLp (state); ++i)
2544 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2545
2546 PUTBACK;
2547 }
2548
2549 return 0;
2550}
2551
2552static void
2553slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2554{
2555 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2556 SV *coro_hv = SvRV (coro_current);
2557 struct coro *coro = SvSTATE_hv (coro_hv);
2558
2559 /* put our coroutine id on the state arg */
2560 av_push (state, SvREFCNT_inc_NN (coro_hv));
2561
2562 /* first see whether we have a non-zero priority and set it as AIO prio */
2563 if (coro->prio)
2564 {
2565 dSP;
2566
2567 static SV *prio_cv;
2568 static SV *prio_sv;
2569
2570 if (expect_false (!prio_cv))
2571 {
2572 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2573 prio_sv = newSViv (0);
2574 }
2575
2576 PUSHMARK (SP);
2577 sv_setiv (prio_sv, coro->prio);
2578 XPUSHs (prio_sv);
2579
2580 PUTBACK;
2581 call_sv (prio_cv, G_VOID | G_DISCARD);
2582 }
2583
2584 /* now call the original request */
2585 {
2586 dSP;
2587 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2588 int i;
2589
1829 PUSHMARK (SP); 2590 PUSHMARK (SP);
1830 2591
1831 EXTEND (SP, 3); 2592 /* first push all args to the stack */
1832 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2593 EXTEND (SP, items + 1);
1833 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1834 PUSHs ((SV *)CvGV (ssl_cv));
1835 2594
1836 RETURNOP (ssl_restore.op_first); 2595 for (i = 0; i < items; ++i)
1837} 2596 PUSHs (arg [i]);
1838 2597
1839/* declare prototype */ 2598 /* now push the callback closure */
1840XS(XS_Coro__State__set_stacklevel); 2599 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1841 2600
1842static OP * 2601 /* now call the AIO function - we assume our request is uncancelable */
1843pp_set_stacklevel (pTHX)
1844{
1845 dSP;
1846 struct transfer_args ta;
1847 SV **arg = PL_stack_base + TOPMARK + 1;
1848 int items = SP - arg; /* args without function object */
1849
1850 /* do a quick consistency check on the "function" object, and if it isn't */
1851 /* for us, divert to the real entersub */
1852 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1853 return PL_ppaddr[OP_ENTERSUB](aTHX);
1854
1855 /* pop args */
1856 SP = PL_stack_base + POPMARK;
1857
1858 if (!(PL_op->op_flags & OPf_STACKED))
1859 {
1860 /* ampersand-form of call, use @_ instead of stack */
1861 AV *av = GvAV (PL_defgv);
1862 arg = AvARRAY (av);
1863 items = AvFILLp (av) + 1;
1864 }
1865
1866 PUTBACK; 2602 PUTBACK;
1867 switch (PL_op->op_private & 7) 2603 call_sv ((SV *)req, G_VOID | G_DISCARD);
1868 {
1869 case 0:
1870 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1871 break;
1872
1873 case 1:
1874 if (items != 2)
1875 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1876
1877 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1878 break;
1879
1880 case 2:
1881 prepare_schedule (aTHX_ &ta);
1882 break;
1883
1884 case 3:
1885 prepare_cede (aTHX_ &ta);
1886 break;
1887
1888 case 4:
1889 if (!prepare_cede_notself (aTHX_ &ta))
1890 RETURN;
1891
1892 break;
1893 } 2604 }
1894 2605
1895 TRANSFER (ta, 0); 2606 /* now that the requets is going, we loop toll we have a result */
1896 SPAGAIN; 2607 frame->data = (void *)state;
1897 2608 frame->prepare = prepare_schedule;
1898skip: 2609 frame->check = slf_check_aio_req;
1899
1900 RETURN;
1901} 2610}
2611
2612static void
2613coro_aio_req_xs (pTHX_ CV *cv)
2614{
2615 dXSARGS;
2616
2617 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2618
2619 XSRETURN_EMPTY;
2620}
2621
2622/*****************************************************************************/
1902 2623
1903MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2624MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1904 2625
1905PROTOTYPES: DISABLE 2626PROTOTYPES: DISABLE
1906 2627
1907# these not obviously related functions are all rolled into the same xs
1908# function to increase chances that they all will call transfer with the same
1909# stack offset
1910void
1911_set_stacklevel (...)
1912 ALIAS:
1913 Coro::State::transfer = 1
1914 Coro::schedule = 2
1915 Coro::cede = 3
1916 Coro::cede_notself = 4
1917 CODE:
1918{
1919 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1920
1921 /* we patch the op, and then re-run the whole call */
1922 /* we have to put some dummy argument on the stack for this to work */
1923 /* TODO: walk back the opcode chain (but how?), nuke the pp_gv etc. */
1924 ssl_restore.op_next = (OP *)&ssl_restore;
1925 ssl_restore.op_type = OP_NULL;
1926 ssl_restore.op_ppaddr = pp_restore;
1927 ssl_restore.op_first = PL_op;
1928
1929 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1930 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1931
1932 PL_op->op_ppaddr = pp_set_stacklevel;
1933 PL_op->op_private = PL_op->op_private & ~7 | ix; /* we potentially share our private flags with entersub */
1934
1935 PL_op = (OP *)&ssl_restore;
1936}
1937
1938BOOT: 2628BOOT:
1939{ 2629{
1940#ifdef USE_ITHREADS 2630#ifdef USE_ITHREADS
1941 MUTEX_INIT (&coro_lock);
1942# if CORO_PTHREAD 2631# if CORO_PTHREAD
1943 coro_thx = PERL_GET_CONTEXT; 2632 coro_thx = PERL_GET_CONTEXT;
1944# endif 2633# endif
1945#endif 2634#endif
1946 BOOT_PAGESIZE; 2635 BOOT_PAGESIZE;
1947
1948 ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0);
1949 2636
1950 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2637 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1951 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2638 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1952 2639
1953 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2640 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1969 main_top_env = PL_top_env; 2656 main_top_env = PL_top_env;
1970 2657
1971 while (main_top_env->je_prev) 2658 while (main_top_env->je_prev)
1972 main_top_env = main_top_env->je_prev; 2659 main_top_env = main_top_env->je_prev;
1973 2660
2661 {
2662 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2663
2664 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2665 hv_store_ent (PL_custom_op_names, slf,
2666 newSVpv ("coro_slf", 0), 0);
2667
2668 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2669 hv_store_ent (PL_custom_op_descs, slf,
2670 newSVpv ("coro schedule like function", 0), 0);
2671 }
2672
1974 coroapi.ver = CORO_API_VERSION; 2673 coroapi.ver = CORO_API_VERSION;
1975 coroapi.rev = CORO_API_REVISION; 2674 coroapi.rev = CORO_API_REVISION;
2675
1976 coroapi.transfer = api_transfer; 2676 coroapi.transfer = api_transfer;
2677
2678 coroapi.sv_state = SvSTATE_;
2679 coroapi.execute_slf = api_execute_slf;
2680 coroapi.prepare_nop = prepare_nop;
2681 coroapi.prepare_schedule = prepare_schedule;
2682 coroapi.prepare_cede = prepare_cede;
2683 coroapi.prepare_cede_notself = prepare_cede_notself;
1977 2684
1978 { 2685 {
1979 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2686 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1980 2687
1981 if (!svp) croak ("Time::HiRes is required"); 2688 if (!svp) croak ("Time::HiRes is required");
… …
1987 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2694 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1988} 2695}
1989 2696
1990SV * 2697SV *
1991new (char *klass, ...) 2698new (char *klass, ...)
2699 ALIAS:
2700 Coro::new = 1
1992 CODE: 2701 CODE:
1993{ 2702{
1994 struct coro *coro; 2703 struct coro *coro;
1995 MAGIC *mg; 2704 MAGIC *mg;
1996 HV *hv; 2705 HV *hv;
2706 CV *cb;
1997 int i; 2707 int i;
2708
2709 if (items > 1)
2710 {
2711 cb = coro_sv_2cv (aTHX_ ST (1));
2712
2713 if (!ix)
2714 {
2715 if (CvISXSUB (cb))
2716 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2717
2718 if (!CvROOT (cb))
2719 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2720 }
2721 }
1998 2722
1999 Newz (0, coro, 1, struct coro); 2723 Newz (0, coro, 1, struct coro);
2000 coro->args = newAV (); 2724 coro->args = newAV ();
2001 coro->flags = CF_NEW; 2725 coro->flags = CF_NEW;
2002 2726
… …
2007 coro->hv = hv = newHV (); 2731 coro->hv = hv = newHV ();
2008 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2732 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2009 mg->mg_flags |= MGf_DUP; 2733 mg->mg_flags |= MGf_DUP;
2010 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2734 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2011 2735
2736 if (items > 1)
2737 {
2012 av_extend (coro->args, items - 1); 2738 av_extend (coro->args, items - 1 + ix - 1);
2739
2740 if (ix)
2741 {
2742 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2743 cb = cv_coro_run;
2744 }
2745
2746 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2747
2013 for (i = 1; i < items; i++) 2748 for (i = 2; i < items; i++)
2014 av_push (coro->args, newSVsv (ST (i))); 2749 av_push (coro->args, newSVsv (ST (i)));
2750 }
2015} 2751}
2016 OUTPUT: 2752 OUTPUT:
2017 RETVAL 2753 RETVAL
2754
2755void
2756transfer (...)
2757 PROTOTYPE: $$
2758 CODE:
2759 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2018 2760
2019bool 2761bool
2020_destroy (SV *coro_sv) 2762_destroy (SV *coro_sv)
2021 CODE: 2763 CODE:
2022 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2764 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2029 CODE: 2771 CODE:
2030 _exit (code); 2772 _exit (code);
2031 2773
2032int 2774int
2033cctx_stacksize (int new_stacksize = 0) 2775cctx_stacksize (int new_stacksize = 0)
2776 PROTOTYPE: ;$
2034 CODE: 2777 CODE:
2035 RETVAL = cctx_stacksize; 2778 RETVAL = cctx_stacksize;
2036 if (new_stacksize) 2779 if (new_stacksize)
2037 { 2780 {
2038 cctx_stacksize = new_stacksize; 2781 cctx_stacksize = new_stacksize;
… …
2041 OUTPUT: 2784 OUTPUT:
2042 RETVAL 2785 RETVAL
2043 2786
2044int 2787int
2045cctx_max_idle (int max_idle = 0) 2788cctx_max_idle (int max_idle = 0)
2789 PROTOTYPE: ;$
2046 CODE: 2790 CODE:
2047 RETVAL = cctx_max_idle; 2791 RETVAL = cctx_max_idle;
2048 if (max_idle > 1) 2792 if (max_idle > 1)
2049 cctx_max_idle = max_idle; 2793 cctx_max_idle = max_idle;
2050 OUTPUT: 2794 OUTPUT:
2051 RETVAL 2795 RETVAL
2052 2796
2053int 2797int
2054cctx_count () 2798cctx_count ()
2799 PROTOTYPE:
2055 CODE: 2800 CODE:
2056 RETVAL = cctx_count; 2801 RETVAL = cctx_count;
2057 OUTPUT: 2802 OUTPUT:
2058 RETVAL 2803 RETVAL
2059 2804
2060int 2805int
2061cctx_idle () 2806cctx_idle ()
2807 PROTOTYPE:
2062 CODE: 2808 CODE:
2063 RETVAL = cctx_idle; 2809 RETVAL = cctx_idle;
2064 OUTPUT: 2810 OUTPUT:
2065 RETVAL 2811 RETVAL
2066 2812
2067void 2813void
2068list () 2814list ()
2815 PROTOTYPE:
2069 PPCODE: 2816 PPCODE:
2070{ 2817{
2071 struct coro *coro; 2818 struct coro *coro;
2072 for (coro = coro_first; coro; coro = coro->next) 2819 for (coro = coro_first; coro; coro = coro->next)
2073 if (coro->hv) 2820 if (coro->hv)
… …
2135 2882
2136void 2883void
2137throw (Coro::State self, SV *throw = &PL_sv_undef) 2884throw (Coro::State self, SV *throw = &PL_sv_undef)
2138 PROTOTYPE: $;$ 2885 PROTOTYPE: $;$
2139 CODE: 2886 CODE:
2887{
2888 struct coro *current = SvSTATE_current;
2889 SV **throwp = self == current ? &CORO_THROW : &self->except;
2140 SvREFCNT_dec (self->throw); 2890 SvREFCNT_dec (*throwp);
2141 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2891 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2892}
2142 2893
2143void 2894void
2144api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2895api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2896 PROTOTYPE: $;$
2897 C_ARGS: aTHX_ coro, flags
2145 2898
2146SV * 2899SV *
2147has_cctx (Coro::State coro) 2900has_cctx (Coro::State coro)
2148 PROTOTYPE: $ 2901 PROTOTYPE: $
2149 CODE: 2902 CODE:
… …
2173 OUTPUT: 2926 OUTPUT:
2174 RETVAL 2927 RETVAL
2175 2928
2176void 2929void
2177force_cctx () 2930force_cctx ()
2931 PROTOTYPE:
2178 CODE: 2932 CODE:
2179 struct coro *coro = SvSTATE (coro_current);
2180 coro->cctx->idle_sp = 0; 2933 SvSTATE_current->cctx->idle_sp = 0;
2181 2934
2182void 2935void
2183swap_defsv (Coro::State self) 2936swap_defsv (Coro::State self)
2184 PROTOTYPE: $ 2937 PROTOTYPE: $
2185 ALIAS: 2938 ALIAS:
2186 swap_defav = 1 2939 swap_defav = 1
2187 CODE: 2940 CODE:
2188 if (!self->slot) 2941 if (!self->slot)
2189 croak ("cannot swap state with coroutine that has no saved state"); 2942 croak ("cannot swap state with coroutine that has no saved state,");
2190 else 2943 else
2191 { 2944 {
2192 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2945 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2193 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2946 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2194 2947
2195 SV *tmp = *src; *src = *dst; *dst = tmp; 2948 SV *tmp = *src; *src = *dst; *dst = tmp;
2196 } 2949 }
2197 2950
2951
2198MODULE = Coro::State PACKAGE = Coro 2952MODULE = Coro::State PACKAGE = Coro
2199 2953
2200BOOT: 2954BOOT:
2201{ 2955{
2202 int i; 2956 int i;
2203 2957
2204 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2958 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2205 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2959 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2206 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2960 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2207 2961 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2962 cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
2208 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2963 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2209 SvREADONLY_on (coro_current); 2964 SvREADONLY_on (coro_current);
2965
2966 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2967 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2968 cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);
2969 cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);
2210 2970
2211 coro_stash = gv_stashpv ("Coro", TRUE); 2971 coro_stash = gv_stashpv ("Coro", TRUE);
2212 2972
2213 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2973 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2214 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2974 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2226 coroapi.schedule = api_schedule; 2986 coroapi.schedule = api_schedule;
2227 coroapi.cede = api_cede; 2987 coroapi.cede = api_cede;
2228 coroapi.cede_notself = api_cede_notself; 2988 coroapi.cede_notself = api_cede_notself;
2229 coroapi.ready = api_ready; 2989 coroapi.ready = api_ready;
2230 coroapi.is_ready = api_is_ready; 2990 coroapi.is_ready = api_is_ready;
2231 coroapi.nready = &coro_nready; 2991 coroapi.nready = coro_nready;
2232 coroapi.current = coro_current; 2992 coroapi.current = coro_current;
2233 2993
2234 GCoroAPI = &coroapi; 2994 /*GCoroAPI = &coroapi;*/
2235 sv_setiv (sv, (IV)&coroapi); 2995 sv_setiv (sv, (IV)&coroapi);
2236 SvREADONLY_on (sv); 2996 SvREADONLY_on (sv);
2237 } 2997 }
2238} 2998}
2999
3000void
3001schedule (...)
3002 CODE:
3003 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3004
3005void
3006cede (...)
3007 CODE:
3008 CORO_EXECUTE_SLF_XS (slf_init_cede);
3009
3010void
3011cede_notself (...)
3012 CODE:
3013 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2239 3014
2240void 3015void
2241_set_current (SV *current) 3016_set_current (SV *current)
2242 PROTOTYPE: $ 3017 PROTOTYPE: $
2243 CODE: 3018 CODE:
… …
2246 3021
2247void 3022void
2248_set_readyhook (SV *hook) 3023_set_readyhook (SV *hook)
2249 PROTOTYPE: $ 3024 PROTOTYPE: $
2250 CODE: 3025 CODE:
2251 LOCK;
2252 SvREFCNT_dec (coro_readyhook); 3026 SvREFCNT_dec (coro_readyhook);
2253 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3027 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2254 UNLOCK;
2255 3028
2256int 3029int
2257prio (Coro::State coro, int newprio = 0) 3030prio (Coro::State coro, int newprio = 0)
3031 PROTOTYPE: $;$
2258 ALIAS: 3032 ALIAS:
2259 nice = 1 3033 nice = 1
2260 CODE: 3034 CODE:
2261{ 3035{
2262 RETVAL = coro->prio; 3036 RETVAL = coro->prio;
… …
2277 3051
2278SV * 3052SV *
2279ready (SV *self) 3053ready (SV *self)
2280 PROTOTYPE: $ 3054 PROTOTYPE: $
2281 CODE: 3055 CODE:
2282 RETVAL = boolSV (api_ready (self)); 3056 RETVAL = boolSV (api_ready (aTHX_ self));
2283 OUTPUT: 3057 OUTPUT:
2284 RETVAL 3058 RETVAL
2285 3059
2286int 3060int
2287nready (...) 3061nready (...)
… …
2289 CODE: 3063 CODE:
2290 RETVAL = coro_nready; 3064 RETVAL = coro_nready;
2291 OUTPUT: 3065 OUTPUT:
2292 RETVAL 3066 RETVAL
2293 3067
2294# for async_pool speedup
2295void 3068void
2296_pool_1 (SV *cb) 3069_pool_handler (...)
2297 CODE: 3070 CODE:
2298{ 3071 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2299 struct coro *coro = SvSTATE (coro_current);
2300 HV *hv = (HV *)SvRV (coro_current);
2301 AV *defav = GvAV (PL_defgv);
2302 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2303 AV *invoke_av;
2304 int i, len;
2305 3072
2306 if (!invoke) 3073void
3074async_pool (SV *cv, ...)
3075 PROTOTYPE: &@
3076 PPCODE:
3077{
3078 HV *hv = (HV *)av_pop (av_async_pool);
3079 AV *av = newAV ();
3080 SV *cb = ST (0);
3081 int i;
3082
3083 av_extend (av, items - 2);
3084 for (i = 1; i < items; ++i)
3085 av_push (av, SvREFCNT_inc_NN (ST (i)));
3086
3087 if ((SV *)hv == &PL_sv_undef)
2307 { 3088 {
2308 SV *old = PL_diehook; 3089 PUSHMARK (SP);
2309 PL_diehook = 0; 3090 EXTEND (SP, 2);
2310 SvREFCNT_dec (old); 3091 PUSHs (sv_Coro);
2311 croak ("\3async_pool terminate\2\n"); 3092 PUSHs ((SV *)cv_pool_handler);
3093 PUTBACK;
3094 call_sv ((SV *)cv_coro_new, G_SCALAR);
3095 SPAGAIN;
3096
3097 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2312 } 3098 }
2313 3099
2314 SvREFCNT_dec (coro->saved_deffh);
2315 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2316
2317 hv_store (hv, "desc", sizeof ("desc") - 1,
2318 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2319
2320 invoke_av = (AV *)SvRV (invoke);
2321 len = av_len (invoke_av);
2322
2323 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2324
2325 if (len > 0)
2326 { 3100 {
2327 av_fill (defav, len - 1); 3101 struct coro *coro = SvSTATE_hv (hv);
2328 for (i = 0; i < len; ++i) 3102
2329 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3103 assert (!coro->invoke_cb);
3104 assert (!coro->invoke_av);
3105 coro->invoke_cb = SvREFCNT_inc (cb);
3106 coro->invoke_av = av;
2330 } 3107 }
2331 3108
3109 api_ready (aTHX_ (SV *)hv);
3110
3111 if (GIMME_V != G_VOID)
3112 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3113 else
2332 SvREFCNT_dec (invoke); 3114 SvREFCNT_dec (hv);
2333} 3115}
2334 3116
2335void 3117SV *
2336_pool_2 (SV *cb) 3118rouse_cb ()
3119 PROTOTYPE:
2337 CODE: 3120 CODE:
2338{ 3121 RETVAL = coro_new_rouse_cb (aTHX);
2339 struct coro *coro = SvSTATE (coro_current);
2340
2341 sv_setsv (cb, &PL_sv_undef);
2342
2343 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2344 coro->saved_deffh = 0;
2345
2346 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2347 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2348 {
2349 SV *old = PL_diehook;
2350 PL_diehook = 0;
2351 SvREFCNT_dec (old);
2352 croak ("\3async_pool terminate\2\n");
2353 }
2354
2355 av_clear (GvAV (PL_defgv));
2356 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2357 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2358
2359 coro->prio = 0;
2360
2361 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2362 api_trace (coro_current, 0);
2363
2364 av_push (av_async_pool, newSVsv (coro_current));
2365}
2366
2367#if 0
2368
2369void
2370_generator_call (...)
2371 PROTOTYPE: @
2372 PPCODE:
2373 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2374 xxxx
2375 abort ();
2376
2377SV *
2378gensub (SV *sub, ...)
2379 PROTOTYPE: &;@
2380 CODE:
2381{
2382 struct coro *coro;
2383 MAGIC *mg;
2384 CV *xcv;
2385 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2386 int i;
2387
2388 CvGV (ncv) = CvGV (cv);
2389 CvFILE (ncv) = CvFILE (cv);
2390
2391 Newz (0, coro, 1, struct coro);
2392 coro->args = newAV ();
2393 coro->flags = CF_NEW;
2394
2395 av_extend (coro->args, items - 1);
2396 for (i = 1; i < items; i++)
2397 av_push (coro->args, newSVsv (ST (i)));
2398
2399 CvISXSUB_on (ncv);
2400 CvXSUBANY (ncv).any_ptr = (void *)coro;
2401
2402 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2403
2404 CvXSUB (ncv) = CvXSUB (xcv);
2405 CvANON_on (ncv);
2406
2407 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2408 RETVAL = newRV_noinc ((SV *)ncv);
2409}
2410 OUTPUT: 3122 OUTPUT:
2411 RETVAL 3123 RETVAL
2412 3124
2413#endif
2414
2415
2416MODULE = Coro::State PACKAGE = Coro::AIO
2417
2418void 3125void
2419_get_state (SV *self) 3126rouse_wait (...)
3127 PROTOTYPE: ;$
2420 PPCODE: 3128 PPCODE:
2421{ 3129 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2422 AV *defav = GvAV (PL_defgv);
2423 AV *av = newAV ();
2424 int i;
2425 SV *data_sv = newSV (sizeof (struct io_state));
2426 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2427 SvCUR_set (data_sv, sizeof (struct io_state));
2428 SvPOK_only (data_sv);
2429 3130
2430 data->errorno = errno;
2431 data->laststype = PL_laststype;
2432 data->laststatval = PL_laststatval;
2433 data->statcache = PL_statcache;
2434 3131
2435 av_extend (av, AvFILLp (defav) + 1 + 1); 3132MODULE = Coro::State PACKAGE = PerlIO::cede
2436 3133
2437 for (i = 0; i <= AvFILLp (defav); ++i) 3134BOOT:
2438 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3135 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2439 3136
2440 av_push (av, data_sv);
2441 3137
2442 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3138MODULE = Coro::State PACKAGE = Coro::Semaphore
2443 3139
2444 api_ready (self); 3140SV *
2445} 3141new (SV *klass, SV *count = 0)
3142 CODE:
3143 RETVAL = sv_bless (
3144 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3145 GvSTASH (CvGV (cv))
3146 );
3147 OUTPUT:
3148 RETVAL
3149
3150# helper for Coro::Channel
3151SV *
3152_alloc (int count)
3153 CODE:
3154 RETVAL = coro_waitarray_new (aTHX_ count);
3155 OUTPUT:
3156 RETVAL
3157
3158SV *
3159count (SV *self)
3160 CODE:
3161 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3162 OUTPUT:
3163 RETVAL
2446 3164
2447void 3165void
2448_set_state (SV *state) 3166up (SV *self, int adjust = 1)
2449 PROTOTYPE: $ 3167 ALIAS:
3168 adjust = 1
3169 CODE:
3170 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3171
3172void
3173down (...)
3174 CODE:
3175 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3176
3177void
3178wait (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3181
3182void
3183try (SV *self)
3184 PPCODE:
3185{
3186 AV *av = (AV *)SvRV (self);
3187 SV *count_sv = AvARRAY (av)[0];
3188 IV count = SvIVX (count_sv);
3189
3190 if (count > 0)
3191 {
3192 --count;
3193 SvIVX (count_sv) = count;
3194 XSRETURN_YES;
3195 }
3196 else
3197 XSRETURN_NO;
3198}
3199
3200void
3201waiters (SV *self)
3202 PPCODE:
3203{
3204 AV *av = (AV *)SvRV (self);
3205 int wcount = AvFILLp (av) + 1 - 1;
3206
3207 if (GIMME_V == G_SCALAR)
3208 XPUSHs (sv_2mortal (newSViv (wcount)));
3209 else
3210 {
3211 int i;
3212 EXTEND (SP, wcount);
3213 for (i = 1; i <= wcount; ++i)
3214 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3215 }
3216}
3217
3218MODULE = Coro::State PACKAGE = Coro::Signal
3219
3220SV *
3221new (SV *klass)
2450 PPCODE: 3222 CODE:
3223 RETVAL = sv_bless (
3224 coro_waitarray_new (aTHX_ 0),
3225 GvSTASH (CvGV (cv))
3226 );
3227 OUTPUT:
3228 RETVAL
3229
3230void
3231wait (...)
3232 CODE:
3233 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3234
3235void
3236broadcast (SV *self)
3237 CODE:
2451{ 3238{
2452 AV *av = (AV *)SvRV (state); 3239 AV *av = (AV *)SvRV (self);
2453 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3240 coro_signal_wake (aTHX_ av, AvFILLp (av));
2454 int i; 3241}
2455 3242
2456 errno = data->errorno; 3243void
2457 PL_laststype = data->laststype; 3244send (SV *self)
2458 PL_laststatval = data->laststatval; 3245 CODE:
2459 PL_statcache = data->statcache; 3246{
3247 AV *av = (AV *)SvRV (self);
2460 3248
2461 EXTEND (SP, AvFILLp (av)); 3249 if (AvFILLp (av))
2462 for (i = 0; i < AvFILLp (av); ++i) 3250 coro_signal_wake (aTHX_ av, 1);
2463 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3251 else
3252 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2464} 3253}
3254
3255IV
3256awaited (SV *self)
3257 CODE:
3258 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3259 OUTPUT:
3260 RETVAL
2465 3261
2466 3262
2467MODULE = Coro::State PACKAGE = Coro::AnyEvent 3263MODULE = Coro::State PACKAGE = Coro::AnyEvent
2468 3264
2469BOOT: 3265BOOT:
2470 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3266 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2471 3267
2472SV * 3268void
2473_schedule (...) 3269_schedule (...)
2474 PROTOTYPE: @
2475 CODE: 3270 CODE:
2476{ 3271{
2477 static int incede; 3272 static int incede;
2478 3273
2479 api_cede_notself (); 3274 api_cede_notself (aTHX);
2480 3275
2481 ++incede; 3276 ++incede;
2482 while (coro_nready >= incede && api_cede ()) 3277 while (coro_nready >= incede && api_cede (aTHX))
2483 ; 3278 ;
2484 3279
2485 sv_setsv (sv_activity, &PL_sv_undef); 3280 sv_setsv (sv_activity, &PL_sv_undef);
2486 if (coro_nready >= incede) 3281 if (coro_nready >= incede)
2487 { 3282 {
2488 PUSHMARK (SP); 3283 PUSHMARK (SP);
2489 PUTBACK; 3284 PUTBACK;
2490 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3285 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2491 SPAGAIN;
2492 } 3286 }
2493 3287
2494 --incede; 3288 --incede;
2495} 3289}
2496 3290
2497 3291
2498MODULE = Coro::State PACKAGE = PerlIO::cede 3292MODULE = Coro::State PACKAGE = Coro::AIO
2499 3293
2500BOOT: 3294void
2501 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3295_register (char *target, char *proto, SV *req)
3296 CODE:
3297{
3298 CV *req_cv = coro_sv_2cv (aTHX_ req);
3299 /* newXSproto doesn't return the CV on 5.8 */
3300 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3301 sv_setpv ((SV *)slf_cv, proto);
3302 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3303}
2502 3304

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