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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 1.313 by root, Thu Nov 20 03:22:59 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
100 103
101/* 5.8.7 */ 104/* 5.8.7 */
102#ifndef SvRV_set 105#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 107#endif
… …
116# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 120#endif
118 121
119/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 123 * portable way as possible. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
121#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
122#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
123 131
124#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
125 133
126#if __GNUC__ >= 3 134#if __GNUC__ >= 3
127# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
… …
137#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
138 146
139#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
140 148
141#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
142 151
143#ifdef USE_ITHREADS 152#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 153# if CORO_PTHREAD
149static void *coro_thx; 154static void *coro_thx;
150# endif 155# endif
151
152#else
153
154# define LOCK (void)0
155# define UNLOCK (void)0
156
157#endif 156#endif
158 157
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
174static double (*nvtime)(); /* so why doesn't it take void? */ 158static double (*nvtime)(); /* so why doesn't it take void? */
159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
175 163
176static U32 cctx_gen; 164static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 168static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 170static 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};
189 171
190static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 174static SV *rv_diehook;
193static SV *rv_warnhook; 175static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 176static HV *hv_sig; /* %SIG */
195 177
196/* async_pool helper stuff */ 178/* async_pool helper stuff */
197static SV *sv_pool_rss; 179static SV *sv_pool_rss;
198static SV *sv_pool_size; 180static SV *sv_pool_size;
181static SV *sv_async_pool_idle;
199static AV *av_async_pool; 182static AV *av_async_pool;
183static SV *sv_Coro;
184static CV *cv_pool_handler;
185static CV *cv_coro_new;
200 186
201/* Coro::AnyEvent */ 187/* Coro::AnyEvent */
202static SV *sv_activity; 188static SV *sv_activity;
203 189
204static struct coro_cctx *cctx_first; 190static struct coro_cctx *cctx_first;
… …
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 198 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 199 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 200};
215 201
216/* this is a structure representing a c-level coroutine */ 202/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 203typedef struct coro_cctx
204{
218 struct coro_cctx *next; 205 struct coro_cctx *next;
219 206
220 /* the stack */ 207 /* the stack */
221 void *sptr; 208 void *sptr;
222 size_t ssize; 209 size_t ssize;
… …
240 CF_NEW = 0x0004, /* has never been switched to */ 227 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 228 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
242}; 229};
243 230
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 231/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 232typedef struct
233{
246 SV *defsv; 234 SV *defsv;
247 AV *defav; 235 AV *defav;
248 SV *errsv; 236 SV *errsv;
249 SV *irsgv; 237 SV *irsgv;
250#define VAR(name,type) type name; 238#define VAR(name,type) type name;
… …
254 242
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 243#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 244
257/* this is a structure representing a perl-level coroutine */ 245/* this is a structure representing a perl-level coroutine */
258struct coro { 246struct coro {
259 /* the c coroutine allocated to this perl coroutine, if any */ 247 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 248 coro_cctx *cctx;
261 249
262 /* process data */ 250 /* state data */
251 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 252 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 253 perl_slots *slot; /* basically the saved sp */
265 254
255 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 256 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */ 257 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 258 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 259 HV *hv; /* the perl hash associated with this coro, if any */
260 void (*on_destroy)(pTHX_ struct coro *coro);
270 261
271 /* statistics */ 262 /* statistics */
272 int usecount; /* number of transfers to this coro */ 263 int usecount; /* number of transfers to this coro */
273 264
274 /* coro process data */ 265 /* coro process data */
275 int prio; 266 int prio;
276 SV *throw; /* exception to be thrown */ 267 SV *except; /* exception to be thrown */
268 SV *rouse_cb;
277 269
278 /* async_pool */ 270 /* async_pool */
279 SV *saved_deffh; 271 SV *saved_deffh;
272 SV *invoke_cb;
273 AV *invoke_av;
280 274
281 /* linked list */ 275 /* linked list */
282 struct coro *next, *prev; 276 struct coro *next, *prev;
283}; 277};
284 278
285typedef struct coro *Coro__State; 279typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 280typedef struct coro *Coro__State_or_hashref;
281
282/* the following variables are effectively part of the perl context */
283/* and get copied between struct coro and these variables */
284/* the mainr easonw e don't support windows process emulation */
285static struct CoroSLF slf_frame; /* the current slf frame */
287 286
288/** Coro ********************************************************************/ 287/** Coro ********************************************************************/
289 288
290#define PRIO_MAX 3 289#define PRIO_MAX 3
291#define PRIO_HIGH 1 290#define PRIO_HIGH 1
… …
296 295
297/* for Coro.pm */ 296/* for Coro.pm */
298static SV *coro_current; 297static SV *coro_current;
299static SV *coro_readyhook; 298static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 299static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
301static int coro_nready; 300static CV *cv_coro_run, *cv_coro_terminate;
302static struct coro *coro_first; 301static struct coro *coro_first;
302#define coro_nready coroapi.nready
303 303
304/** lowlevel stuff **********************************************************/ 304/** lowlevel stuff **********************************************************/
305 305
306static SV * 306static SV *
307coro_get_sv (pTHX_ const char *name, int create) 307coro_get_sv (pTHX_ const char *name, int create)
… …
329#if PERL_VERSION_ATLEAST (5,10,0) 329#if PERL_VERSION_ATLEAST (5,10,0)
330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
331 get_hv (name, create); 331 get_hv (name, create);
332#endif 332#endif
333 return get_hv (name, create); 333 return get_hv (name, create);
334}
335
336/* may croak */
337INLINE CV *
338coro_sv_2cv (pTHX_ SV *sv)
339{
340 HV *st;
341 GV *gvp;
342 return sv_2cv (sv, &st, &gvp, 0);
334} 343}
335 344
336static AV * 345static AV *
337coro_clone_padlist (pTHX_ CV *cv) 346coro_clone_padlist (pTHX_ CV *cv)
338{ 347{
… …
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 401 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 402
394 return 0; 403 return 0;
395} 404}
396 405
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext 406#define CORO_MAGIC_type_cv 26
398#define CORO_MAGIC_type_state PERL_MAGIC_ext 407#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 408
400static MGVTBL coro_cv_vtbl = { 409static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 410 0, 0, 0, 0,
402 coro_cv_free 411 coro_cv_free
403}; 412};
404 413
414#define CORO_MAGIC_NN(sv, type) \
415 (expect_true (SvMAGIC (sv)->mg_type == type) \
416 ? SvMAGIC (sv) \
417 : mg_find (sv, type))
418
405#define CORO_MAGIC(sv, type) \ 419#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \ 420 (expect_true (SvMAGIC (sv)) \
407 ? SvMAGIC (sv)->mg_type == type \ 421 ? CORO_MAGIC_NN (sv, type) \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0 422 : 0)
411 423
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 424#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) 425#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
414 426
415INLINE struct coro * 427INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro) 428SvSTATE_ (pTHX_ SV *coro)
417{ 429{
418 HV *stash; 430 HV *stash;
… …
435 mg = CORO_MAGIC_state (coro); 447 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr; 448 return (struct coro *)mg->mg_ptr;
437} 449}
438 450
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 451#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
452
453/* faster than SvSTATE, but expects a coroutine hv */
454#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
455#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
440 456
441/* the next two functions merely cache the padlists */ 457/* the next two functions merely cache the padlists */
442static void 458static void
443get_padlist (pTHX_ CV *cv) 459get_padlist (pTHX_ CV *cv)
444{ 460{
… …
450 else 466 else
451 { 467 {
452#if CORO_PREFER_PERL_FUNCTIONS 468#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 469 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 470 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 471 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 472 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 473 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 474 SvREFCNT_dec (cp);
459#else 475#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 476 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
511 CvPADLIST (cv) = (AV *)POPs; 527 CvPADLIST (cv) = (AV *)POPs;
512 } 528 }
513 529
514 PUTBACK; 530 PUTBACK;
515 } 531 }
532
533 slf_frame = c->slf_frame;
534 CORO_THROW = c->except;
516} 535}
517 536
518static void 537static void
519save_perl (pTHX_ Coro__State c) 538save_perl (pTHX_ Coro__State c)
520{ 539{
540 c->except = CORO_THROW;
541 c->slf_frame = slf_frame;
542
521 { 543 {
522 dSP; 544 dSP;
523 I32 cxix = cxstack_ix; 545 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 546 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 547 PERL_SI *top_si = PL_curstackinfo;
… …
592 #undef VAR 614 #undef VAR
593 } 615 }
594} 616}
595 617
596/* 618/*
597 * allocate various perl stacks. This is an exact copy 619 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 620 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 621 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 622 * not usually need a lot of stackspace.
601 */ 623 */
602#if CORO_PREFER_PERL_FUNCTIONS 624#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 625# define coro_init_stacks(thx) init_stacks ()
604#else 626#else
605static void 627static void
606coro_init_stacks (pTHX) 628coro_init_stacks (pTHX)
607{ 629{
608 PL_curstackinfo = new_stackinfo(32, 8); 630 PL_curstackinfo = new_stackinfo(32, 8);
… …
671#if !PERL_VERSION_ATLEAST (5,10,0) 693#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 694 Safefree (PL_retstack);
673#endif 695#endif
674} 696}
675 697
698#define CORO_RSS \
699 rss += sizeof (SYM (curstackinfo)); \
700 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
702 rss += SYM (tmps_max) * sizeof (SV *); \
703 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
704 rss += SYM (scopestack_max) * sizeof (I32); \
705 rss += SYM (savestack_max) * sizeof (ANY);
706
676static size_t 707static size_t
677coro_rss (pTHX_ struct coro *coro) 708coro_rss (pTHX_ struct coro *coro)
678{ 709{
679 size_t rss = sizeof (*coro); 710 size_t rss = sizeof (*coro);
680 711
681 if (coro->mainstack) 712 if (coro->mainstack)
682 { 713 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 714 if (coro->flags & CF_RUNNING)
687 { 715 {
688 slot = &tmp_slot; 716 #define SYM(sym) PL_ ## sym
689 717 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 718 #undef SYM
693 } 719 }
694 else 720 else
695 slot = coro->slot;
696
697 if (slot)
698 { 721 {
699 rss += sizeof (slot->curstackinfo); 722 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 723 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 724 #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 } 725 }
711 } 726 }
712 727
713 return rss; 728 return rss;
714} 729}
… …
723#ifndef MgPV_nolen_const 738#ifndef MgPV_nolen_const
724#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 739#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
725 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 740 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
726 (const char*)(mg)->mg_ptr) 741 (const char*)(mg)->mg_ptr)
727#endif 742#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
733 743
734/* 744/*
735 * This overrides the default magic get method of %SIG elements. 745 * 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 746 * 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 747 * and instead of tryign to save and restore the hash elements, we just provide
… …
809 819
810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 820 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
811} 821}
812 822
813static void 823static void
824prepare_nop (pTHX_ struct coro_transfer_args *ta)
825{
826 /* kind of mega-hacky, but works */
827 ta->next = ta->prev = (struct coro *)ta;
828}
829
830static int
831slf_check_nop (pTHX_ struct CoroSLF *frame)
832{
833 return 0;
834}
835
836static UNOP coro_setup_op;
837
838static void NOINLINE /* noinline to keep it out of the transfer fast path */
814coro_setup (pTHX_ struct coro *coro) 839coro_setup (pTHX_ struct coro *coro)
815{ 840{
816 /* 841 /*
817 * emulate part of the perl startup here. 842 * emulate part of the perl startup here.
818 */ 843 */
… …
845 { 870 {
846 dSP; 871 dSP;
847 UNOP myop; 872 UNOP myop;
848 873
849 Zero (&myop, 1, UNOP); 874 Zero (&myop, 1, UNOP);
850 myop.op_next = Nullop; 875 myop.op_next = Nullop;
876 myop.op_type = OP_ENTERSUB;
851 myop.op_flags = OPf_WANT_VOID; 877 myop.op_flags = OPf_WANT_VOID;
852 878
853 PUSHMARK (SP); 879 PUSHMARK (SP);
854 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 880 PUSHs ((SV *)coro->startcv);
855 PUTBACK; 881 PUTBACK;
856 PL_op = (OP *)&myop; 882 PL_op = (OP *)&myop;
857 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 883 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
858 SPAGAIN;
859 } 884 }
860 885
861 /* this newly created coroutine might be run on an existing cctx which most 886 /* this newly created coroutine might be run on an existing cctx which most
862 * likely was suspended in set_stacklevel, called from entersub. 887 * 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 */ 888 */
866 SSL_HEAD; 889 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
890 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
891
892 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
893 coro_setup_op.op_next = PL_op;
894 coro_setup_op.op_type = OP_CUSTOM;
895 coro_setup_op.op_ppaddr = pp_slf;
896 /* no flags etc. required, as an init function won't be called */
897
898 PL_op = (OP *)&coro_setup_op;
899
900 /* copy throw, in case it was set before coro_setup */
901 CORO_THROW = coro->except;
867} 902}
868 903
869static void 904static void
870coro_destruct (pTHX_ struct coro *coro) 905coro_destruct (pTHX_ struct coro *coro)
871{ 906{
… …
895 930
896 SvREFCNT_dec (PL_diehook); 931 SvREFCNT_dec (PL_diehook);
897 SvREFCNT_dec (PL_warnhook); 932 SvREFCNT_dec (PL_warnhook);
898 933
899 SvREFCNT_dec (coro->saved_deffh); 934 SvREFCNT_dec (coro->saved_deffh);
900 SvREFCNT_dec (coro->throw); 935 SvREFCNT_dec (coro->rouse_cb);
936 SvREFCNT_dec (coro->invoke_cb);
937 SvREFCNT_dec (coro->invoke_av);
901 938
902 coro_destruct_stacks (aTHX); 939 coro_destruct_stacks (aTHX);
903} 940}
904 941
905INLINE void 942INLINE void
… …
915static int 952static int
916runops_trace (pTHX) 953runops_trace (pTHX)
917{ 954{
918 COP *oldcop = 0; 955 COP *oldcop = 0;
919 int oldcxix = -2; 956 int oldcxix = -2;
920 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 957 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
921 coro_cctx *cctx = coro->cctx; 958 coro_cctx *cctx = coro->cctx;
922 959
923 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 960 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
924 { 961 {
925 PERL_ASYNC_CHECK (); 962 PERL_ASYNC_CHECK ();
… …
992 SAVETMPS; 1029 SAVETMPS;
993 EXTEND (SP, 3); 1030 EXTEND (SP, 3);
994 PUSHMARK (SP); 1031 PUSHMARK (SP);
995 PUSHs (&PL_sv_yes); 1032 PUSHs (&PL_sv_yes);
996 PUSHs (fullname); 1033 PUSHs (fullname);
997 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1034 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
998 PUTBACK; 1035 PUTBACK;
999 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1036 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); 1037 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1001 SPAGAIN; 1038 SPAGAIN;
1002 FREETMPS; 1039 FREETMPS;
… …
1034 1071
1035 TAINT_NOT; 1072 TAINT_NOT;
1036 return 0; 1073 return 0;
1037} 1074}
1038 1075
1076static struct coro_cctx *cctx_ssl_cctx;
1077static struct CoroSLF cctx_ssl_frame;
1078
1039static void 1079static void
1040prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1080slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1041{ 1081{
1042 ta->prev = (struct coro *)cctx; 1082 ta->prev = (struct coro *)cctx_ssl_cctx;
1043 ta->next = 0; 1083 ta->next = 0;
1044} 1084}
1045 1085
1046/* inject a fake call to Coro::State::_cctx_init into the execution */ 1086static int
1047/* _cctx_init should be careful, as it could be called at almost any time */ 1087slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1048/* during execution of a perl program */ 1088{
1049/* also initialises PL_top_env */ 1089 *frame = cctx_ssl_frame;
1090
1091 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1092}
1093
1094/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1050static void NOINLINE 1095static void NOINLINE
1051cctx_prepare (pTHX_ coro_cctx *cctx) 1096cctx_prepare (pTHX_ coro_cctx *cctx)
1052{ 1097{
1053 dSP;
1054 UNOP myop;
1055
1056 PL_top_env = &PL_start_env; 1098 PL_top_env = &PL_start_env;
1057 1099
1058 if (cctx->flags & CC_TRACE) 1100 if (cctx->flags & CC_TRACE)
1059 PL_runops = runops_trace; 1101 PL_runops = runops_trace;
1060 1102
1061 Zero (&myop, 1, UNOP); 1103 /* we already must be executing an SLF op, there is no other valid way
1062 myop.op_next = PL_op; 1104 * that can lead to creation of a new cctx */
1063 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1105 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1106 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1064 1107
1065 PUSHMARK (SP); 1108 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1066 EXTEND (SP, 2); 1109 cctx_ssl_cctx = cctx;
1067 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1110 cctx_ssl_frame = slf_frame;
1068 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1111
1069 PUTBACK; 1112 slf_frame.prepare = slf_prepare_set_stacklevel;
1070 PL_op = (OP *)&myop; 1113 slf_frame.check = slf_check_set_stacklevel;
1071 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1072 SPAGAIN;
1073} 1114}
1074 1115
1075/* the tail of transfer: execute stuff we can only do after a transfer */ 1116/* the tail of transfer: execute stuff we can only do after a transfer */
1076INLINE void 1117INLINE void
1077transfer_tail (pTHX) 1118transfer_tail (pTHX)
1078{ 1119{
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); 1120 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} 1121}
1095 1122
1096/* 1123/*
1097 * this is a _very_ stripped down perl interpreter ;) 1124 * this is a _very_ stripped down perl interpreter ;)
1098 */ 1125 */
… …
1105# endif 1132# endif
1106#endif 1133#endif
1107 { 1134 {
1108 dTHX; 1135 dTHX;
1109 1136
1110 /* entersub called ENTER, but we never 'returned', undo that here */ 1137 /* normally we would need to skip the entersub here */
1111 SSL_TAIL; 1138 /* 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; 1139 /* PL_nop = PL_nop->op_next */
1115 1140
1116 /* inject a fake subroutine call to cctx_init */ 1141 /* inject a fake subroutine call to cctx_init */
1117 cctx_prepare (aTHX_ (coro_cctx *)arg); 1142 cctx_prepare (aTHX_ (coro_cctx *)arg);
1118 1143
1119 /* cctx_run is the alternative tail of transfer() */ 1144 /* cctx_run is the alternative tail of transfer() */
1120 transfer_tail (aTHX); 1145 transfer_tail (aTHX);
1121 1146
1122 /* somebody or something will hit me for both perl_run and PL_restartop */ 1147 /* somebody or something will hit me for both perl_run and PL_restartop */
1123 PL_restartop = PL_op; 1148 PL_restartop = PL_op;
1124 perl_run (PL_curinterp); 1149 perl_run (PL_curinterp);
1150 /*
1151 * Unfortunately, there is no way to get at the return values of the
1152 * coro body here, as perl_run destroys these
1153 */
1125 1154
1126 /* 1155 /*
1127 * If perl-run returns we assume exit() was being called or the coro 1156 * 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) 1157 * 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 1158 * reason for perl_run to return. We try to exit by jumping to the
… …
1280/** coroutine switching *****************************************************/ 1309/** coroutine switching *****************************************************/
1281 1310
1282static void 1311static void
1283transfer_check (pTHX_ struct coro *prev, struct coro *next) 1312transfer_check (pTHX_ struct coro *prev, struct coro *next)
1284{ 1313{
1314 /* TODO: throwing up here is considered harmful */
1315
1285 if (expect_true (prev != next)) 1316 if (expect_true (prev != next))
1286 { 1317 {
1287 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1318 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"); 1319 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1289 1320
1290 if (expect_false (next->flags & CF_RUNNING)) 1321 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"); 1322 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1292 1323
1293 if (expect_false (next->flags & CF_DESTROYED)) 1324 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"); 1325 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1295 1326
1296#if !PERL_VERSION_ATLEAST (5,10,0) 1327#if !PERL_VERSION_ATLEAST (5,10,0)
1297 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1328 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"); 1329 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1299#endif 1330#endif
1300 } 1331 }
1301} 1332}
1302 1333
1303/* always use the TRANSFER macro */ 1334/* always use the TRANSFER macro */
1304static void NOINLINE 1335static void NOINLINE /* noinline so we have a fixed stackframe */
1305transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1336transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1306{ 1337{
1307 dSTACKLEVEL; 1338 dSTACKLEVEL;
1308 1339
1309 /* sometimes transfer is only called to set idle_sp */ 1340 /* sometimes transfer is only called to set idle_sp */
… …
1324 prev->flags |= CF_RUNNING; 1355 prev->flags |= CF_RUNNING;
1325 } 1356 }
1326 1357
1327 prev->flags &= ~CF_RUNNING; 1358 prev->flags &= ~CF_RUNNING;
1328 next->flags |= CF_RUNNING; 1359 next->flags |= CF_RUNNING;
1329
1330 LOCK;
1331 1360
1332 /* first get rid of the old state */ 1361 /* first get rid of the old state */
1333 save_perl (aTHX_ prev); 1362 save_perl (aTHX_ prev);
1334 1363
1335 if (expect_false (next->flags & CF_NEW)) 1364 if (expect_false (next->flags & CF_NEW))
… …
1349 prev__cctx->idle_sp == STACKLEVEL 1378 prev__cctx->idle_sp == STACKLEVEL
1350 && !(prev__cctx->flags & CC_TRACE) 1379 && !(prev__cctx->flags & CC_TRACE)
1351 && !force_cctx 1380 && !force_cctx
1352 )) 1381 ))
1353 { 1382 {
1354 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1383 /* 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)); 1384 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1356 1385
1357 prev->cctx = 0; 1386 prev->cctx = 0;
1358 1387
1359 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1388 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
… …
1367 1396
1368 ++next->usecount; 1397 ++next->usecount;
1369 1398
1370 if (expect_true (!next->cctx)) 1399 if (expect_true (!next->cctx))
1371 next->cctx = cctx_get (aTHX); 1400 next->cctx = cctx_get (aTHX);
1372
1373 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1374 transfer_next = next;
1375 1401
1376 if (expect_false (prev__cctx != next->cctx)) 1402 if (expect_false (prev__cctx != next->cctx))
1377 { 1403 {
1378 prev__cctx->top_env = PL_top_env; 1404 prev__cctx->top_env = PL_top_env;
1379 PL_top_env = next->cctx->top_env; 1405 PL_top_env = next->cctx->top_env;
… …
1393coro_state_destroy (pTHX_ struct coro *coro) 1419coro_state_destroy (pTHX_ struct coro *coro)
1394{ 1420{
1395 if (coro->flags & CF_DESTROYED) 1421 if (coro->flags & CF_DESTROYED)
1396 return 0; 1422 return 0;
1397 1423
1424 if (coro->on_destroy)
1425 coro->on_destroy (aTHX_ coro);
1426
1398 coro->flags |= CF_DESTROYED; 1427 coro->flags |= CF_DESTROYED;
1399 1428
1400 if (coro->flags & CF_READY) 1429 if (coro->flags & CF_READY)
1401 { 1430 {
1402 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1431 /* reduce nready, as destroying a ready coro effectively unreadies it */
1403 /* alternative: look through all ready queues and remove the coro */ 1432 /* alternative: look through all ready queues and remove the coro */
1404 LOCK;
1405 --coro_nready; 1433 --coro_nready;
1406 UNLOCK;
1407 } 1434 }
1408 else 1435 else
1409 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1436 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1410 1437
1411 if (coro->mainstack && coro->mainstack != main_mainstack) 1438 if (coro->mainstack && coro->mainstack != main_mainstack)
1412 { 1439 {
1413 struct coro temp; 1440 struct coro temp;
1414 1441
1415 if (coro->flags & CF_RUNNING) 1442 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1416 croak ("FATAL: tried to destroy currently running coroutine");
1417 1443
1418 save_perl (aTHX_ &temp); 1444 save_perl (aTHX_ &temp);
1419 load_perl (aTHX_ coro); 1445 load_perl (aTHX_ coro);
1420 1446
1421 coro_destruct (aTHX_ coro); 1447 coro_destruct (aTHX_ coro);
… …
1424 1450
1425 coro->slot = 0; 1451 coro->slot = 0;
1426 } 1452 }
1427 1453
1428 cctx_destroy (coro->cctx); 1454 cctx_destroy (coro->cctx);
1455 SvREFCNT_dec (coro->startcv);
1429 SvREFCNT_dec (coro->args); 1456 SvREFCNT_dec (coro->args);
1457 SvREFCNT_dec (CORO_THROW);
1430 1458
1431 if (coro->next) coro->next->prev = coro->prev; 1459 if (coro->next) coro->next->prev = coro->prev;
1432 if (coro->prev) coro->prev->next = coro->next; 1460 if (coro->prev) coro->prev->next = coro->next;
1433 if (coro == coro_first) coro_first = coro->next; 1461 if (coro == coro_first) coro_first = coro->next;
1434 1462
… …
1472# define MGf_DUP 0 1500# define MGf_DUP 0
1473#endif 1501#endif
1474}; 1502};
1475 1503
1476static void 1504static void
1477prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1505prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1478{ 1506{
1479 ta->prev = SvSTATE (prev_sv); 1507 ta->prev = SvSTATE (prev_sv);
1480 ta->next = SvSTATE (next_sv); 1508 ta->next = SvSTATE (next_sv);
1481 TRANSFER_CHECK (*ta); 1509 TRANSFER_CHECK (*ta);
1482} 1510}
1483 1511
1484static void 1512static void
1485api_transfer (SV *prev_sv, SV *next_sv) 1513api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1486{ 1514{
1487 dTHX;
1488 struct transfer_args ta; 1515 struct coro_transfer_args ta;
1489 1516
1490 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1517 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1491 TRANSFER (ta, 1); 1518 TRANSFER (ta, 1);
1492} 1519}
1493 1520
1521/*****************************************************************************/
1522/* gensub: simple closure generation utility */
1523
1524#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1525
1526/* create a closure from XS, returns a code reference */
1527/* the arg can be accessed via GENSUB_ARG from the callback */
1528/* the callback must use dXSARGS/XSRETURN */
1529static SV *
1530gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1531{
1532 CV *cv = (CV *)newSV (0);
1533
1534 sv_upgrade ((SV *)cv, SVt_PVCV);
1535
1536 CvANON_on (cv);
1537 CvISXSUB_on (cv);
1538 CvXSUB (cv) = xsub;
1539 GENSUB_ARG = arg;
1540
1541 return newRV_noinc ((SV *)cv);
1542}
1543
1494/** Coro ********************************************************************/ 1544/** Coro ********************************************************************/
1495 1545
1496static void 1546INLINE void
1497coro_enq (pTHX_ SV *coro_sv) 1547coro_enq (pTHX_ struct coro *coro)
1498{ 1548{
1499 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1549 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1500} 1550}
1501 1551
1502static SV * 1552INLINE SV *
1503coro_deq (pTHX) 1553coro_deq (pTHX)
1504{ 1554{
1505 int prio; 1555 int prio;
1506 1556
1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1557 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1510 1560
1511 return 0; 1561 return 0;
1512} 1562}
1513 1563
1514static int 1564static int
1515api_ready (SV *coro_sv) 1565api_ready (pTHX_ SV *coro_sv)
1516{ 1566{
1517 dTHX;
1518 struct coro *coro; 1567 struct coro *coro;
1519 SV *sv_hook; 1568 SV *sv_hook;
1520 void (*xs_hook)(void); 1569 void (*xs_hook)(void);
1521 1570
1522 if (SvROK (coro_sv)) 1571 if (SvROK (coro_sv))
… …
1527 if (coro->flags & CF_READY) 1576 if (coro->flags & CF_READY)
1528 return 0; 1577 return 0;
1529 1578
1530 coro->flags |= CF_READY; 1579 coro->flags |= CF_READY;
1531 1580
1532 LOCK;
1533
1534 sv_hook = coro_nready ? 0 : coro_readyhook; 1581 sv_hook = coro_nready ? 0 : coro_readyhook;
1535 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1582 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1536 1583
1537 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1584 coro_enq (aTHX_ coro);
1538 ++coro_nready; 1585 ++coro_nready;
1539 1586
1540 UNLOCK;
1541
1542 if (sv_hook) 1587 if (sv_hook)
1543 { 1588 {
1544 dSP; 1589 dSP;
1545 1590
1546 ENTER; 1591 ENTER;
1547 SAVETMPS; 1592 SAVETMPS;
1548 1593
1549 PUSHMARK (SP); 1594 PUSHMARK (SP);
1550 PUTBACK; 1595 PUTBACK;
1551 call_sv (sv_hook, G_DISCARD); 1596 call_sv (sv_hook, G_VOID | G_DISCARD);
1552 SPAGAIN;
1553 1597
1554 FREETMPS; 1598 FREETMPS;
1555 LEAVE; 1599 LEAVE;
1556 } 1600 }
1557 1601
… …
1560 1604
1561 return 1; 1605 return 1;
1562} 1606}
1563 1607
1564static int 1608static int
1565api_is_ready (SV *coro_sv) 1609api_is_ready (pTHX_ SV *coro_sv)
1566{ 1610{
1567 dTHX;
1568
1569 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1611 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1570} 1612}
1571 1613
1572INLINE void 1614INLINE void
1573prepare_schedule (pTHX_ struct transfer_args *ta) 1615prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1574{ 1616{
1575 SV *prev_sv, *next_sv; 1617 SV *prev_sv, *next_sv;
1576 1618
1577 for (;;) 1619 for (;;)
1578 { 1620 {
1579 LOCK;
1580 next_sv = coro_deq (aTHX); 1621 next_sv = coro_deq (aTHX);
1581 1622
1582 /* nothing to schedule: call the idle handler */ 1623 /* nothing to schedule: call the idle handler */
1583 if (expect_false (!next_sv)) 1624 if (expect_false (!next_sv))
1584 { 1625 {
1585 dSP; 1626 dSP;
1586 UNLOCK;
1587 1627
1588 ENTER; 1628 ENTER;
1589 SAVETMPS; 1629 SAVETMPS;
1590 1630
1591 PUSHMARK (SP); 1631 PUSHMARK (SP);
1592 PUTBACK; 1632 PUTBACK;
1593 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1633 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1594 SPAGAIN;
1595 1634
1596 FREETMPS; 1635 FREETMPS;
1597 LEAVE; 1636 LEAVE;
1598 continue; 1637 continue;
1599 } 1638 }
1600 1639
1601 ta->next = SvSTATE (next_sv); 1640 ta->next = SvSTATE_hv (next_sv);
1602 1641
1603 /* cannot transfer to destroyed coros, skip and look for next */ 1642 /* cannot transfer to destroyed coros, skip and look for next */
1604 if (expect_false (ta->next->flags & CF_DESTROYED)) 1643 if (expect_false (ta->next->flags & CF_DESTROYED))
1605 { 1644 {
1606 UNLOCK;
1607 SvREFCNT_dec (next_sv); 1645 SvREFCNT_dec (next_sv);
1608 /* coro_nready has already been taken care of by destroy */ 1646 /* coro_nready has already been taken care of by destroy */
1609 continue; 1647 continue;
1610 } 1648 }
1611 1649
1612 --coro_nready; 1650 --coro_nready;
1613 UNLOCK;
1614 break; 1651 break;
1615 } 1652 }
1616 1653
1617 /* free this only after the transfer */ 1654 /* free this only after the transfer */
1618 prev_sv = SvRV (coro_current); 1655 prev_sv = SvRV (coro_current);
1619 ta->prev = SvSTATE (prev_sv); 1656 ta->prev = SvSTATE_hv (prev_sv);
1620 TRANSFER_CHECK (*ta); 1657 TRANSFER_CHECK (*ta);
1621 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1658 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1622 ta->next->flags &= ~CF_READY; 1659 ta->next->flags &= ~CF_READY;
1623 SvRV_set (coro_current, next_sv); 1660 SvRV_set (coro_current, next_sv);
1624 1661
1625 LOCK;
1626 free_coro_mortal (aTHX); 1662 free_coro_mortal (aTHX);
1627 coro_mortal = prev_sv; 1663 coro_mortal = prev_sv;
1628 UNLOCK;
1629} 1664}
1630 1665
1631INLINE void 1666INLINE void
1632prepare_cede (pTHX_ struct transfer_args *ta) 1667prepare_cede (pTHX_ struct coro_transfer_args *ta)
1633{ 1668{
1634 api_ready (coro_current); 1669 api_ready (aTHX_ coro_current);
1635 prepare_schedule (aTHX_ ta); 1670 prepare_schedule (aTHX_ ta);
1636} 1671}
1637 1672
1673INLINE void
1674prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1675{
1676 SV *prev = SvRV (coro_current);
1677
1678 if (coro_nready)
1679 {
1680 prepare_schedule (aTHX_ ta);
1681 api_ready (aTHX_ prev);
1682 }
1683 else
1684 prepare_nop (aTHX_ ta);
1685}
1686
1687static void
1688api_schedule (pTHX)
1689{
1690 struct coro_transfer_args ta;
1691
1692 prepare_schedule (aTHX_ &ta);
1693 TRANSFER (ta, 1);
1694}
1695
1638static int 1696static int
1639prepare_cede_notself (pTHX_ struct transfer_args *ta) 1697api_cede (pTHX)
1640{ 1698{
1641 if (coro_nready) 1699 struct coro_transfer_args ta;
1642 { 1700
1643 SV *prev = SvRV (coro_current);
1644 prepare_schedule (aTHX_ ta); 1701 prepare_cede (aTHX_ &ta);
1645 api_ready (prev); 1702
1703 if (expect_true (ta.prev != ta.next))
1704 {
1705 TRANSFER (ta, 1);
1646 return 1; 1706 return 1;
1647 } 1707 }
1648 else 1708 else
1649 return 0; 1709 return 0;
1650} 1710}
1651 1711
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 1712static int
1663api_cede (void) 1713api_cede_notself (pTHX)
1664{ 1714{
1665 dTHX; 1715 if (coro_nready)
1716 {
1666 struct transfer_args ta; 1717 struct coro_transfer_args ta;
1667 1718
1668 prepare_cede (aTHX_ &ta); 1719 prepare_cede_notself (aTHX_ &ta);
1669
1670 if (expect_true (ta.prev != ta.next))
1671 {
1672 TRANSFER (ta, 1); 1720 TRANSFER (ta, 1);
1673 return 1; 1721 return 1;
1674 } 1722 }
1675 else 1723 else
1676 return 0; 1724 return 0;
1677} 1725}
1678 1726
1679static int 1727static 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) 1728api_trace (pTHX_ SV *coro_sv, int flags)
1696{ 1729{
1697 dTHX;
1698 struct coro *coro = SvSTATE (coro_sv); 1730 struct coro *coro = SvSTATE (coro_sv);
1699 1731
1700 if (flags & CC_TRACE) 1732 if (flags & CC_TRACE)
1701 { 1733 {
1702 if (!coro->cctx) 1734 if (!coro->cctx)
1703 coro->cctx = cctx_new_run (); 1735 coro->cctx = cctx_new_run ();
1704 else if (!(coro->cctx->flags & CC_TRACE)) 1736 else if (!(coro->cctx->flags & CC_TRACE))
1705 croak ("cannot enable tracing on coroutine with custom stack"); 1737 croak ("cannot enable tracing on coroutine with custom stack,");
1706 1738
1707 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1739 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1708 } 1740 }
1709 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1741 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1710 { 1742 {
… …
1715 else 1747 else
1716 coro->slot->runops = RUNOPS_DEFAULT; 1748 coro->slot->runops = RUNOPS_DEFAULT;
1717 } 1749 }
1718} 1750}
1719 1751
1720#if 0 1752/*****************************************************************************/
1753/* async pool handler */
1754
1721static int 1755static int
1722coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1756slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1723{ 1757{
1724 AV *padlist; 1758 HV *hv = (HV *)SvRV (coro_current);
1725 AV *av = (AV *)mg->mg_obj; 1759 struct coro *coro = (struct coro *)frame->data;
1726 1760
1727 abort (); 1761 if (!coro->invoke_cb)
1762 return 1; /* loop till we have invoke */
1763 else
1764 {
1765 hv_store (hv, "desc", sizeof ("desc") - 1,
1766 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1767
1768 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1769
1770 {
1771 dSP;
1772 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1773 PUTBACK;
1774 }
1775
1776 SvREFCNT_dec (GvAV (PL_defgv));
1777 GvAV (PL_defgv) = coro->invoke_av;
1778 coro->invoke_av = 0;
1779
1780 return 0;
1781 }
1782}
1783
1784static void
1785slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1786{
1787 HV *hv = (HV *)SvRV (coro_current);
1788 struct coro *coro = SvSTATE_hv ((SV *)hv);
1789
1790 if (expect_true (coro->saved_deffh))
1791 {
1792 /* subsequent iteration */
1793 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1794 coro->saved_deffh = 0;
1795
1796 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1797 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1798 {
1799 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1800 coro->invoke_av = newAV ();
1801
1802 frame->prepare = prepare_nop;
1803 }
1804 else
1805 {
1806 av_clear (GvAV (PL_defgv));
1807 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1808
1809 coro->prio = 0;
1810
1811 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1812 api_trace (aTHX_ coro_current, 0);
1813
1814 frame->prepare = prepare_schedule;
1815 av_push (av_async_pool, SvREFCNT_inc (hv));
1816 }
1817 }
1818 else
1819 {
1820 /* first iteration, simply fall through */
1821 frame->prepare = prepare_nop;
1822 }
1823
1824 frame->check = slf_check_pool_handler;
1825 frame->data = (void *)coro;
1826}
1827
1828/*****************************************************************************/
1829/* rouse callback */
1830
1831#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1832
1833static void
1834coro_rouse_callback (pTHX_ CV *cv)
1835{
1836 dXSARGS;
1837 SV *data = (SV *)GENSUB_ARG;
1838
1839 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1840 {
1841 /* first call, set args */
1842 AV *av = newAV ();
1843 SV *coro = SvRV (data);
1844
1845 SvRV_set (data, (SV *)av);
1846 api_ready (aTHX_ coro);
1847 SvREFCNT_dec (coro);
1848
1849 /* better take a full copy of the arguments */
1850 while (items--)
1851 av_store (av, items, newSVsv (ST (items)));
1852 }
1853
1854 XSRETURN_EMPTY;
1855}
1856
1857static int
1858slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1859{
1860 SV *data = (SV *)frame->data;
1861
1862 if (CORO_THROW)
1863 return 0;
1864
1865 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1866 return 1;
1867
1868 /* now push all results on the stack */
1869 {
1870 dSP;
1871 AV *av = (AV *)SvRV (data);
1872 int i;
1873
1874 EXTEND (SP, AvFILLp (av) + 1);
1875 for (i = 0; i <= AvFILLp (av); ++i)
1876 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1877
1878 /* we have stolen the elements, so ste length to zero and free */
1879 AvFILLp (av) = -1;
1880 av_undef (av);
1881
1882 PUTBACK;
1883 }
1728 1884
1729 return 0; 1885 return 0;
1730} 1886}
1731 1887
1732static MGVTBL coro_gensub_vtbl = { 1888static void
1733 0, 0, 0, 0, 1889slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1734 coro_gensub_free 1890{
1735}; 1891 SV *cb;
1736#endif 1892
1893 if (items)
1894 cb = arg [0];
1895 else
1896 {
1897 struct coro *coro = SvSTATE_current;
1898
1899 if (!coro->rouse_cb)
1900 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1901
1902 cb = sv_2mortal (coro->rouse_cb);
1903 coro->rouse_cb = 0;
1904 }
1905
1906 if (!SvROK (cb)
1907 || SvTYPE (SvRV (cb)) != SVt_PVCV
1908 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1909 croak ("Coro::rouse_wait called with illegal callback argument,");
1910
1911 {
1912 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1913 SV *data = (SV *)GENSUB_ARG;
1914
1915 frame->data = (void *)data;
1916 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1917 frame->check = slf_check_rouse_wait;
1918 }
1919}
1920
1921static SV *
1922coro_new_rouse_cb (pTHX)
1923{
1924 HV *hv = (HV *)SvRV (coro_current);
1925 struct coro *coro = SvSTATE_hv (hv);
1926 SV *data = newRV_inc ((SV *)hv);
1927 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1928
1929 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1930 SvREFCNT_dec (data); /* magicext increases the refcount */
1931
1932 SvREFCNT_dec (coro->rouse_cb);
1933 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1934
1935 return cb;
1936}
1937
1938/*****************************************************************************/
1939/* schedule-like-function opcode (SLF) */
1940
1941static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1942static const CV *slf_cv;
1943static SV **slf_argv;
1944static int slf_argc, slf_arga; /* count, allocated */
1945static I32 slf_ax; /* top of stack, for restore */
1946
1947/* this restores the stack in the case we patched the entersub, to */
1948/* recreate the stack frame as perl will on following calls */
1949/* since entersub cleared the stack */
1950static OP *
1951pp_restore (pTHX)
1952{
1953 int i;
1954 SV **SP = PL_stack_base + slf_ax;
1955
1956 PUSHMARK (SP);
1957
1958 EXTEND (SP, slf_argc + 1);
1959
1960 for (i = 0; i < slf_argc; ++i)
1961 PUSHs (sv_2mortal (slf_argv [i]));
1962
1963 PUSHs ((SV *)CvGV (slf_cv));
1964
1965 RETURNOP (slf_restore.op_first);
1966}
1967
1968static void
1969slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1970{
1971 SV **arg = (SV **)slf_frame.data;
1972
1973 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1974}
1975
1976static void
1977slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1978{
1979 if (items != 2)
1980 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1981
1982 frame->prepare = slf_prepare_transfer;
1983 frame->check = slf_check_nop;
1984 frame->data = (void *)arg; /* let's hope it will stay valid */
1985}
1986
1987static void
1988slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1989{
1990 frame->prepare = prepare_schedule;
1991 frame->check = slf_check_nop;
1992}
1993
1994static void
1995slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1996{
1997 frame->prepare = prepare_cede;
1998 frame->check = slf_check_nop;
1999}
2000
2001static void
2002slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2003{
2004 frame->prepare = prepare_cede_notself;
2005 frame->check = slf_check_nop;
2006}
2007
2008/*
2009 * these not obviously related functions are all rolled into one
2010 * function to increase chances that they all will call transfer with the same
2011 * stack offset
2012 * SLF stands for "schedule-like-function".
2013 */
2014static OP *
2015pp_slf (pTHX)
2016{
2017 I32 checkmark; /* mark SP to see how many elements check has pushed */
2018
2019 /* set up the slf frame, unless it has already been set-up */
2020 /* the latter happens when a new coro has been started */
2021 /* or when a new cctx was attached to an existing coroutine */
2022 if (expect_true (!slf_frame.prepare))
2023 {
2024 /* first iteration */
2025 dSP;
2026 SV **arg = PL_stack_base + TOPMARK + 1;
2027 int items = SP - arg; /* args without function object */
2028 SV *gv = *sp;
2029
2030 /* do a quick consistency check on the "function" object, and if it isn't */
2031 /* for us, divert to the real entersub */
2032 if (SvTYPE (gv) != SVt_PVGV
2033 || !GvCV (gv)
2034 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2035 return PL_ppaddr[OP_ENTERSUB](aTHX);
2036
2037 if (!(PL_op->op_flags & OPf_STACKED))
2038 {
2039 /* ampersand-form of call, use @_ instead of stack */
2040 AV *av = GvAV (PL_defgv);
2041 arg = AvARRAY (av);
2042 items = AvFILLp (av) + 1;
2043 }
2044
2045 /* now call the init function, which needs to set up slf_frame */
2046 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2047 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2048
2049 /* pop args */
2050 SP = PL_stack_base + POPMARK;
2051
2052 PUTBACK;
2053 }
2054
2055 /* now that we have a slf_frame, interpret it! */
2056 /* we use a callback system not to make the code needlessly */
2057 /* complicated, but so we can run multiple perl coros from one cctx */
2058
2059 do
2060 {
2061 struct coro_transfer_args ta;
2062
2063 slf_frame.prepare (aTHX_ &ta);
2064 TRANSFER (ta, 0);
2065
2066 checkmark = PL_stack_sp - PL_stack_base;
2067 }
2068 while (slf_frame.check (aTHX_ &slf_frame));
2069
2070 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2071
2072 /* exception handling */
2073 if (expect_false (CORO_THROW))
2074 {
2075 SV *exception = sv_2mortal (CORO_THROW);
2076
2077 CORO_THROW = 0;
2078 sv_setsv (ERRSV, exception);
2079 croak (0);
2080 }
2081
2082 /* return value handling - mostly like entersub */
2083 /* make sure we put something on the stack in scalar context */
2084 if (GIMME_V == G_SCALAR)
2085 {
2086 dSP;
2087 SV **bot = PL_stack_base + checkmark;
2088
2089 if (sp == bot) /* too few, push undef */
2090 bot [1] = &PL_sv_undef;
2091 else if (sp != bot + 1) /* too many, take last one */
2092 bot [1] = *sp;
2093
2094 SP = bot + 1;
2095
2096 PUTBACK;
2097 }
2098
2099 return NORMAL;
2100}
2101
2102static void
2103api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2104{
2105 int i;
2106 SV **arg = PL_stack_base + ax;
2107 int items = PL_stack_sp - arg + 1;
2108
2109 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2110
2111 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2112 && PL_op->op_ppaddr != pp_slf)
2113 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2114
2115 CvFLAGS (cv) |= CVf_SLF;
2116 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2117 slf_cv = cv;
2118
2119 /* we patch the op, and then re-run the whole call */
2120 /* we have to put the same argument on the stack for this to work */
2121 /* and this will be done by pp_restore */
2122 slf_restore.op_next = (OP *)&slf_restore;
2123 slf_restore.op_type = OP_CUSTOM;
2124 slf_restore.op_ppaddr = pp_restore;
2125 slf_restore.op_first = PL_op;
2126
2127 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2128
2129 if (PL_op->op_flags & OPf_STACKED)
2130 {
2131 if (items > slf_arga)
2132 {
2133 slf_arga = items;
2134 free (slf_argv);
2135 slf_argv = malloc (slf_arga * sizeof (SV *));
2136 }
2137
2138 slf_argc = items;
2139
2140 for (i = 0; i < items; ++i)
2141 slf_argv [i] = SvREFCNT_inc (arg [i]);
2142 }
2143 else
2144 slf_argc = 0;
2145
2146 PL_op->op_ppaddr = pp_slf;
2147 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2148
2149 PL_op = (OP *)&slf_restore;
2150}
1737 2151
1738/*****************************************************************************/ 2152/*****************************************************************************/
1739/* PerlIO::cede */ 2153/* PerlIO::cede */
1740 2154
1741typedef struct 2155typedef struct
… …
1769 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2183 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1770 double now = nvtime (); 2184 double now = nvtime ();
1771 2185
1772 if (now >= self->next) 2186 if (now >= self->next)
1773 { 2187 {
1774 api_cede (); 2188 api_cede (aTHX);
1775 self->next = now + self->every; 2189 self->next = now + self->every;
1776 } 2190 }
1777 2191
1778 return PerlIOBuf_flush (aTHX_ f); 2192 return PerlIOBuf_flush (aTHX_ f);
1779} 2193}
… …
1809 PerlIOBuf_get_cnt, 2223 PerlIOBuf_get_cnt,
1810 PerlIOBuf_set_ptrcnt, 2224 PerlIOBuf_set_ptrcnt,
1811}; 2225};
1812 2226
1813/*****************************************************************************/ 2227/*****************************************************************************/
2228/* Coro::Semaphore & Coro::Signal */
1814 2229
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 * 2230static SV *
1825pp_restore (pTHX) 2231coro_waitarray_new (pTHX_ int count)
1826{ 2232{
2233 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2234 AV *av = newAV ();
2235 SV **ary;
2236
2237 /* unfortunately, building manually saves memory */
2238 Newx (ary, 2, SV *);
2239 AvALLOC (av) = ary;
2240 /*AvARRAY (av) = ary;*/
2241 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2242 AvMAX (av) = 1;
2243 AvFILLp (av) = 0;
2244 ary [0] = newSViv (count);
2245
2246 return newRV_noinc ((SV *)av);
2247}
2248
2249/* semaphore */
2250
2251static void
2252coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2253{
2254 SV *count_sv = AvARRAY (av)[0];
2255 IV count = SvIVX (count_sv);
2256
2257 count += adjust;
2258 SvIVX (count_sv) = count;
2259
2260 /* now wake up as many waiters as are expected to lock */
2261 while (count > 0 && AvFILLp (av) > 0)
2262 {
2263 SV *cb;
2264
2265 /* swap first two elements so we can shift a waiter */
2266 AvARRAY (av)[0] = AvARRAY (av)[1];
2267 AvARRAY (av)[1] = count_sv;
2268 cb = av_shift (av);
2269
2270 if (SvOBJECT (cb))
2271 {
2272 api_ready (aTHX_ cb);
2273 --count;
2274 }
2275 else if (SvTYPE (cb) == SVt_PVCV)
2276 {
2277 dSP;
2278 PUSHMARK (SP);
2279 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2280 PUTBACK;
2281 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2282 }
2283
2284 SvREFCNT_dec (cb);
2285 }
2286}
2287
2288static void
2289coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2290{
2291 /* call $sem->adjust (0) to possibly wake up some other waiters */
2292 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2293}
2294
2295static int
2296slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2297{
2298 AV *av = (AV *)frame->data;
2299 SV *count_sv = AvARRAY (av)[0];
2300
2301 /* if we are about to throw, don't actually acquire the lock, just throw */
2302 if (CORO_THROW)
2303 return 0;
2304 else if (SvIVX (count_sv) > 0)
2305 {
2306 SvSTATE_current->on_destroy = 0;
2307
2308 if (acquire)
2309 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2310 else
2311 coro_semaphore_adjust (aTHX_ av, 0);
2312
2313 return 0;
2314 }
2315 else
2316 {
2317 int i;
2318 /* if we were woken up but can't down, we look through the whole */
2319 /* waiters list and only add us if we aren't in there already */
2320 /* this avoids some degenerate memory usage cases */
2321
2322 for (i = 1; i <= AvFILLp (av); ++i)
2323 if (AvARRAY (av)[i] == SvRV (coro_current))
2324 return 1;
2325
2326 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2327 return 1;
2328 }
2329}
2330
2331static int
2332slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2333{
2334 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2335}
2336
2337static int
2338slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2339{
2340 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2341}
2342
2343static void
2344slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2345{
2346 AV *av = (AV *)SvRV (arg [0]);
2347
2348 if (SvIVX (AvARRAY (av)[0]) > 0)
2349 {
2350 frame->data = (void *)av;
2351 frame->prepare = prepare_nop;
2352 }
2353 else
2354 {
2355 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2356
2357 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2358 frame->prepare = prepare_schedule;
2359
2360 /* to avoid race conditions when a woken-up coro gets terminated */
2361 /* we arrange for a temporary on_destroy that calls adjust (0) */
2362 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2363 }
2364}
2365
2366static void
2367slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2368{
2369 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2370 frame->check = slf_check_semaphore_down;
2371}
2372
2373static void
2374slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2375{
2376 if (items >= 2)
2377 {
2378 /* callback form */
2379 AV *av = (AV *)SvRV (arg [0]);
2380 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2381
2382 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2383
2384 if (SvIVX (AvARRAY (av)[0]) > 0)
2385 coro_semaphore_adjust (aTHX_ av, 0);
2386
2387 frame->prepare = prepare_nop;
2388 frame->check = slf_check_nop;
2389 }
2390 else
2391 {
2392 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2393 frame->check = slf_check_semaphore_wait;
2394 }
2395}
2396
2397/* signal */
2398
2399static void
2400coro_signal_wake (pTHX_ AV *av, int count)
2401{
2402 SvIVX (AvARRAY (av)[0]) = 0;
2403
2404 /* now signal count waiters */
2405 while (count > 0 && AvFILLp (av) > 0)
2406 {
2407 SV *cb;
2408
2409 /* swap first two elements so we can shift a waiter */
2410 cb = AvARRAY (av)[0];
2411 AvARRAY (av)[0] = AvARRAY (av)[1];
2412 AvARRAY (av)[1] = cb;
2413
2414 cb = av_shift (av);
2415
2416 api_ready (aTHX_ cb);
2417 sv_setiv (cb, 0); /* signal waiter */
2418 SvREFCNT_dec (cb);
2419
2420 --count;
2421 }
2422}
2423
2424static int
2425slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2426{
2427 /* if we are about to throw, also stop waiting */
2428 return SvROK ((SV *)frame->data) && !CORO_THROW;
2429}
2430
2431static void
2432slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2433{
2434 AV *av = (AV *)SvRV (arg [0]);
2435
2436 if (SvIVX (AvARRAY (av)[0]))
2437 {
2438 SvIVX (AvARRAY (av)[0]) = 0;
2439 frame->prepare = prepare_nop;
2440 frame->check = slf_check_nop;
2441 }
2442 else
2443 {
2444 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2445
2446 av_push (av, waiter);
2447
2448 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2449 frame->prepare = prepare_schedule;
2450 frame->check = slf_check_signal_wait;
2451 }
2452}
2453
2454/*****************************************************************************/
2455/* Coro::AIO */
2456
2457#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2458
2459/* helper storage struct */
2460struct io_state
2461{
2462 int errorno;
2463 I32 laststype; /* U16 in 5.10.0 */
2464 int laststatval;
2465 Stat_t statcache;
2466};
2467
2468static void
2469coro_aio_callback (pTHX_ CV *cv)
2470{
2471 dXSARGS;
2472 AV *state = (AV *)GENSUB_ARG;
2473 SV *coro = av_pop (state);
2474 SV *data_sv = newSV (sizeof (struct io_state));
2475
2476 av_extend (state, items - 1);
2477
2478 sv_upgrade (data_sv, SVt_PV);
2479 SvCUR_set (data_sv, sizeof (struct io_state));
2480 SvPOK_only (data_sv);
2481
2482 {
2483 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2484
2485 data->errorno = errno;
2486 data->laststype = PL_laststype;
2487 data->laststatval = PL_laststatval;
2488 data->statcache = PL_statcache;
2489 }
2490
2491 /* now build the result vector out of all the parameters and the data_sv */
2492 {
2493 int i;
2494
2495 for (i = 0; i < items; ++i)
2496 av_push (state, SvREFCNT_inc_NN (ST (i)));
2497 }
2498
2499 av_push (state, data_sv);
2500
2501 api_ready (aTHX_ coro);
2502 SvREFCNT_dec (coro);
2503 SvREFCNT_dec ((AV *)state);
2504}
2505
2506static int
2507slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2508{
2509 AV *state = (AV *)frame->data;
2510
2511 /* if we are about to throw, return early */
2512 /* this does not cancel the aio request, but at least */
2513 /* it quickly returns */
2514 if (CORO_THROW)
2515 return 0;
2516
2517 /* one element that is an RV? repeat! */
2518 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2519 return 1;
2520
2521 /* restore status */
2522 {
2523 SV *data_sv = av_pop (state);
2524 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2525
2526 errno = data->errorno;
2527 PL_laststype = data->laststype;
2528 PL_laststatval = data->laststatval;
2529 PL_statcache = data->statcache;
2530
2531 SvREFCNT_dec (data_sv);
2532 }
2533
2534 /* push result values */
2535 {
1827 dSP; 2536 dSP;
2537 int i;
1828 2538
2539 EXTEND (SP, AvFILLp (state) + 1);
2540 for (i = 0; i <= AvFILLp (state); ++i)
2541 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2542
2543 PUTBACK;
2544 }
2545
2546 return 0;
2547}
2548
2549static void
2550slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2551{
2552 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2553 SV *coro_hv = SvRV (coro_current);
2554 struct coro *coro = SvSTATE_hv (coro_hv);
2555
2556 /* put our coroutine id on the state arg */
2557 av_push (state, SvREFCNT_inc_NN (coro_hv));
2558
2559 /* first see whether we have a non-zero priority and set it as AIO prio */
2560 if (coro->prio)
2561 {
2562 dSP;
2563
2564 static SV *prio_cv;
2565 static SV *prio_sv;
2566
2567 if (expect_false (!prio_cv))
2568 {
2569 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2570 prio_sv = newSViv (0);
2571 }
2572
2573 PUSHMARK (SP);
2574 sv_setiv (prio_sv, coro->prio);
2575 XPUSHs (prio_sv);
2576
2577 PUTBACK;
2578 call_sv (prio_cv, G_VOID | G_DISCARD);
2579 }
2580
2581 /* now call the original request */
2582 {
2583 dSP;
2584 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2585 int i;
2586
1829 PUSHMARK (SP); 2587 PUSHMARK (SP);
1830 2588
1831 EXTEND (SP, 3); 2589 /* first push all args to the stack */
1832 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 2590 EXTEND (SP, items + 1);
1833 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1834 PUSHs ((SV *)CvGV (ssl_cv));
1835 2591
1836 RETURNOP (ssl_restore.op_first); 2592 for (i = 0; i < items; ++i)
1837} 2593 PUSHs (arg [i]);
1838 2594
1839/* declare prototype */ 2595 /* now push the callback closure */
1840XS(XS_Coro__State__set_stacklevel); 2596 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
1841 2597
1842static OP * 2598 /* 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; 2599 PUTBACK;
1867 switch (PL_op->op_private & 7) 2600 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 } 2601 }
1894 2602
1895 TRANSFER (ta, 0); 2603 /* now that the requets is going, we loop toll we have a result */
1896 SPAGAIN; 2604 frame->data = (void *)state;
1897 2605 frame->prepare = prepare_schedule;
1898skip: 2606 frame->check = slf_check_aio_req;
1899
1900 RETURN;
1901} 2607}
2608
2609static void
2610coro_aio_req_xs (pTHX_ CV *cv)
2611{
2612 dXSARGS;
2613
2614 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2615
2616 XSRETURN_EMPTY;
2617}
2618
2619/*****************************************************************************/
1902 2620
1903MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2621MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1904 2622
1905PROTOTYPES: DISABLE 2623PROTOTYPES: DISABLE
1906 2624
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: 2625BOOT:
1939{ 2626{
1940#ifdef USE_ITHREADS 2627#ifdef USE_ITHREADS
1941 MUTEX_INIT (&coro_lock);
1942# if CORO_PTHREAD 2628# if CORO_PTHREAD
1943 coro_thx = PERL_GET_CONTEXT; 2629 coro_thx = PERL_GET_CONTEXT;
1944# endif 2630# endif
1945#endif 2631#endif
1946 BOOT_PAGESIZE; 2632 BOOT_PAGESIZE;
1947 2633
1948 ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0);
1949
1950 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2634 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1951 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2635 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1952 2636
1953 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2637 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1954 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 2638 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
1969 main_top_env = PL_top_env; 2653 main_top_env = PL_top_env;
1970 2654
1971 while (main_top_env->je_prev) 2655 while (main_top_env->je_prev)
1972 main_top_env = main_top_env->je_prev; 2656 main_top_env = main_top_env->je_prev;
1973 2657
2658 {
2659 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2660
2661 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2662 hv_store_ent (PL_custom_op_names, slf,
2663 newSVpv ("coro_slf", 0), 0);
2664
2665 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2666 hv_store_ent (PL_custom_op_descs, slf,
2667 newSVpv ("coro schedule like function", 0), 0);
2668 }
2669
1974 coroapi.ver = CORO_API_VERSION; 2670 coroapi.ver = CORO_API_VERSION;
1975 coroapi.rev = CORO_API_REVISION; 2671 coroapi.rev = CORO_API_REVISION;
2672
1976 coroapi.transfer = api_transfer; 2673 coroapi.transfer = api_transfer;
2674
2675 coroapi.sv_state = SvSTATE_;
2676 coroapi.execute_slf = api_execute_slf;
2677 coroapi.prepare_nop = prepare_nop;
2678 coroapi.prepare_schedule = prepare_schedule;
2679 coroapi.prepare_cede = prepare_cede;
2680 coroapi.prepare_cede_notself = prepare_cede_notself;
1977 2681
1978 { 2682 {
1979 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2683 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1980 2684
1981 if (!svp) croak ("Time::HiRes is required"); 2685 if (!svp) croak ("Time::HiRes is required");
… …
1987 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2691 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1988} 2692}
1989 2693
1990SV * 2694SV *
1991new (char *klass, ...) 2695new (char *klass, ...)
2696 ALIAS:
2697 Coro::new = 1
1992 CODE: 2698 CODE:
1993{ 2699{
1994 struct coro *coro; 2700 struct coro *coro;
1995 MAGIC *mg; 2701 MAGIC *mg;
1996 HV *hv; 2702 HV *hv;
2703 CV *cb;
1997 int i; 2704 int i;
2705
2706 if (items > 1)
2707 {
2708 cb = coro_sv_2cv (aTHX_ ST (1));
2709
2710 if (!ix)
2711 {
2712 if (CvISXSUB (cb))
2713 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2714
2715 if (!CvROOT (cb))
2716 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2717 }
2718 }
1998 2719
1999 Newz (0, coro, 1, struct coro); 2720 Newz (0, coro, 1, struct coro);
2000 coro->args = newAV (); 2721 coro->args = newAV ();
2001 coro->flags = CF_NEW; 2722 coro->flags = CF_NEW;
2002 2723
… …
2007 coro->hv = hv = newHV (); 2728 coro->hv = hv = newHV ();
2008 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2729 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2009 mg->mg_flags |= MGf_DUP; 2730 mg->mg_flags |= MGf_DUP;
2010 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2731 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2011 2732
2733 if (items > 1)
2734 {
2012 av_extend (coro->args, items - 1); 2735 av_extend (coro->args, items - 1 + ix - 1);
2736
2737 if (ix)
2738 {
2739 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2740 cb = cv_coro_run;
2741 }
2742
2743 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2744
2013 for (i = 1; i < items; i++) 2745 for (i = 2; i < items; i++)
2014 av_push (coro->args, newSVsv (ST (i))); 2746 av_push (coro->args, newSVsv (ST (i)));
2747 }
2015} 2748}
2016 OUTPUT: 2749 OUTPUT:
2017 RETVAL 2750 RETVAL
2751
2752void
2753transfer (...)
2754 PROTOTYPE: $$
2755 CODE:
2756 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2018 2757
2019bool 2758bool
2020_destroy (SV *coro_sv) 2759_destroy (SV *coro_sv)
2021 CODE: 2760 CODE:
2022 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2761 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
2029 CODE: 2768 CODE:
2030 _exit (code); 2769 _exit (code);
2031 2770
2032int 2771int
2033cctx_stacksize (int new_stacksize = 0) 2772cctx_stacksize (int new_stacksize = 0)
2773 PROTOTYPE: ;$
2034 CODE: 2774 CODE:
2035 RETVAL = cctx_stacksize; 2775 RETVAL = cctx_stacksize;
2036 if (new_stacksize) 2776 if (new_stacksize)
2037 { 2777 {
2038 cctx_stacksize = new_stacksize; 2778 cctx_stacksize = new_stacksize;
… …
2041 OUTPUT: 2781 OUTPUT:
2042 RETVAL 2782 RETVAL
2043 2783
2044int 2784int
2045cctx_max_idle (int max_idle = 0) 2785cctx_max_idle (int max_idle = 0)
2786 PROTOTYPE: ;$
2046 CODE: 2787 CODE:
2047 RETVAL = cctx_max_idle; 2788 RETVAL = cctx_max_idle;
2048 if (max_idle > 1) 2789 if (max_idle > 1)
2049 cctx_max_idle = max_idle; 2790 cctx_max_idle = max_idle;
2050 OUTPUT: 2791 OUTPUT:
2051 RETVAL 2792 RETVAL
2052 2793
2053int 2794int
2054cctx_count () 2795cctx_count ()
2796 PROTOTYPE:
2055 CODE: 2797 CODE:
2056 RETVAL = cctx_count; 2798 RETVAL = cctx_count;
2057 OUTPUT: 2799 OUTPUT:
2058 RETVAL 2800 RETVAL
2059 2801
2060int 2802int
2061cctx_idle () 2803cctx_idle ()
2804 PROTOTYPE:
2062 CODE: 2805 CODE:
2063 RETVAL = cctx_idle; 2806 RETVAL = cctx_idle;
2064 OUTPUT: 2807 OUTPUT:
2065 RETVAL 2808 RETVAL
2066 2809
2067void 2810void
2068list () 2811list ()
2812 PROTOTYPE:
2069 PPCODE: 2813 PPCODE:
2070{ 2814{
2071 struct coro *coro; 2815 struct coro *coro;
2072 for (coro = coro_first; coro; coro = coro->next) 2816 for (coro = coro_first; coro; coro = coro->next)
2073 if (coro->hv) 2817 if (coro->hv)
… …
2135 2879
2136void 2880void
2137throw (Coro::State self, SV *throw = &PL_sv_undef) 2881throw (Coro::State self, SV *throw = &PL_sv_undef)
2138 PROTOTYPE: $;$ 2882 PROTOTYPE: $;$
2139 CODE: 2883 CODE:
2884{
2885 struct coro *current = SvSTATE_current;
2886 SV **throwp = self == current ? &CORO_THROW : &self->except;
2140 SvREFCNT_dec (self->throw); 2887 SvREFCNT_dec (*throwp);
2141 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2888 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2889}
2142 2890
2143void 2891void
2144api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2892api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2893 PROTOTYPE: $;$
2894 C_ARGS: aTHX_ coro, flags
2145 2895
2146SV * 2896SV *
2147has_cctx (Coro::State coro) 2897has_cctx (Coro::State coro)
2148 PROTOTYPE: $ 2898 PROTOTYPE: $
2149 CODE: 2899 CODE:
… …
2173 OUTPUT: 2923 OUTPUT:
2174 RETVAL 2924 RETVAL
2175 2925
2176void 2926void
2177force_cctx () 2927force_cctx ()
2928 PROTOTYPE:
2178 CODE: 2929 CODE:
2179 struct coro *coro = SvSTATE (coro_current);
2180 coro->cctx->idle_sp = 0; 2930 SvSTATE_current->cctx->idle_sp = 0;
2181 2931
2182void 2932void
2183swap_defsv (Coro::State self) 2933swap_defsv (Coro::State self)
2184 PROTOTYPE: $ 2934 PROTOTYPE: $
2185 ALIAS: 2935 ALIAS:
2186 swap_defav = 1 2936 swap_defav = 1
2187 CODE: 2937 CODE:
2188 if (!self->slot) 2938 if (!self->slot)
2189 croak ("cannot swap state with coroutine that has no saved state"); 2939 croak ("cannot swap state with coroutine that has no saved state,");
2190 else 2940 else
2191 { 2941 {
2192 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2942 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2193 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2943 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2194 2944
2195 SV *tmp = *src; *src = *dst; *dst = tmp; 2945 SV *tmp = *src; *src = *dst; *dst = tmp;
2196 } 2946 }
2197 2947
2948
2198MODULE = Coro::State PACKAGE = Coro 2949MODULE = Coro::State PACKAGE = Coro
2199 2950
2200BOOT: 2951BOOT:
2201{ 2952{
2202 int i; 2953 int i;
2203 2954
2204 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2955 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2205 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2956 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2206 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2957 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2207 2958 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2959 cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
2208 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2960 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2209 SvREADONLY_on (coro_current); 2961 SvREADONLY_on (coro_current);
2962
2963 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2964 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2965 cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);
2966 cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);
2210 2967
2211 coro_stash = gv_stashpv ("Coro", TRUE); 2968 coro_stash = gv_stashpv ("Coro", TRUE);
2212 2969
2213 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2970 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2214 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2971 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2226 coroapi.schedule = api_schedule; 2983 coroapi.schedule = api_schedule;
2227 coroapi.cede = api_cede; 2984 coroapi.cede = api_cede;
2228 coroapi.cede_notself = api_cede_notself; 2985 coroapi.cede_notself = api_cede_notself;
2229 coroapi.ready = api_ready; 2986 coroapi.ready = api_ready;
2230 coroapi.is_ready = api_is_ready; 2987 coroapi.is_ready = api_is_ready;
2231 coroapi.nready = &coro_nready; 2988 coroapi.nready = coro_nready;
2232 coroapi.current = coro_current; 2989 coroapi.current = coro_current;
2233 2990
2234 GCoroAPI = &coroapi; 2991 /*GCoroAPI = &coroapi;*/
2235 sv_setiv (sv, (IV)&coroapi); 2992 sv_setiv (sv, (IV)&coroapi);
2236 SvREADONLY_on (sv); 2993 SvREADONLY_on (sv);
2237 } 2994 }
2238} 2995}
2996
2997void
2998schedule (...)
2999 CODE:
3000 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3001
3002void
3003cede (...)
3004 CODE:
3005 CORO_EXECUTE_SLF_XS (slf_init_cede);
3006
3007void
3008cede_notself (...)
3009 CODE:
3010 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2239 3011
2240void 3012void
2241_set_current (SV *current) 3013_set_current (SV *current)
2242 PROTOTYPE: $ 3014 PROTOTYPE: $
2243 CODE: 3015 CODE:
… …
2246 3018
2247void 3019void
2248_set_readyhook (SV *hook) 3020_set_readyhook (SV *hook)
2249 PROTOTYPE: $ 3021 PROTOTYPE: $
2250 CODE: 3022 CODE:
2251 LOCK;
2252 SvREFCNT_dec (coro_readyhook); 3023 SvREFCNT_dec (coro_readyhook);
2253 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3024 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2254 UNLOCK;
2255 3025
2256int 3026int
2257prio (Coro::State coro, int newprio = 0) 3027prio (Coro::State coro, int newprio = 0)
3028 PROTOTYPE: $;$
2258 ALIAS: 3029 ALIAS:
2259 nice = 1 3030 nice = 1
2260 CODE: 3031 CODE:
2261{ 3032{
2262 RETVAL = coro->prio; 3033 RETVAL = coro->prio;
… …
2277 3048
2278SV * 3049SV *
2279ready (SV *self) 3050ready (SV *self)
2280 PROTOTYPE: $ 3051 PROTOTYPE: $
2281 CODE: 3052 CODE:
2282 RETVAL = boolSV (api_ready (self)); 3053 RETVAL = boolSV (api_ready (aTHX_ self));
2283 OUTPUT: 3054 OUTPUT:
2284 RETVAL 3055 RETVAL
2285 3056
2286int 3057int
2287nready (...) 3058nready (...)
… …
2289 CODE: 3060 CODE:
2290 RETVAL = coro_nready; 3061 RETVAL = coro_nready;
2291 OUTPUT: 3062 OUTPUT:
2292 RETVAL 3063 RETVAL
2293 3064
2294# for async_pool speedup
2295void 3065void
2296_pool_1 (SV *cb) 3066_pool_handler (...)
2297 CODE: 3067 CODE:
2298{ 3068 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 3069
2306 if (!invoke) 3070void
3071async_pool (SV *cv, ...)
3072 PROTOTYPE: &@
3073 PPCODE:
3074{
3075 HV *hv = (HV *)av_pop (av_async_pool);
3076 AV *av = newAV ();
3077 SV *cb = ST (0);
3078 int i;
3079
3080 av_extend (av, items - 2);
3081 for (i = 1; i < items; ++i)
3082 av_push (av, SvREFCNT_inc_NN (ST (i)));
3083
3084 if ((SV *)hv == &PL_sv_undef)
2307 { 3085 {
2308 SV *old = PL_diehook; 3086 PUSHMARK (SP);
2309 PL_diehook = 0; 3087 EXTEND (SP, 2);
2310 SvREFCNT_dec (old); 3088 PUSHs (sv_Coro);
2311 croak ("\3async_pool terminate\2\n"); 3089 PUSHs ((SV *)cv_pool_handler);
3090 PUTBACK;
3091 call_sv ((SV *)cv_coro_new, G_SCALAR);
3092 SPAGAIN;
3093
3094 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2312 } 3095 }
2313 3096
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 { 3097 {
2327 av_fill (defav, len - 1); 3098 struct coro *coro = SvSTATE_hv (hv);
2328 for (i = 0; i < len; ++i) 3099
2329 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3100 assert (!coro->invoke_cb);
3101 assert (!coro->invoke_av);
3102 coro->invoke_cb = SvREFCNT_inc (cb);
3103 coro->invoke_av = av;
2330 } 3104 }
2331 3105
3106 api_ready (aTHX_ (SV *)hv);
3107
3108 if (GIMME_V != G_VOID)
3109 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3110 else
2332 SvREFCNT_dec (invoke); 3111 SvREFCNT_dec (hv);
2333} 3112}
2334 3113
2335void 3114SV *
2336_pool_2 (SV *cb) 3115rouse_cb ()
3116 PROTOTYPE:
2337 CODE: 3117 CODE:
2338{ 3118 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: 3119 OUTPUT:
2411 RETVAL 3120 RETVAL
2412 3121
2413#endif
2414
2415
2416MODULE = Coro::State PACKAGE = Coro::AIO
2417
2418void 3122void
2419_get_state (SV *self) 3123rouse_wait (...)
3124 PROTOTYPE: ;$
2420 PPCODE: 3125 PPCODE:
2421{ 3126 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 3127
2430 data->errorno = errno;
2431 data->laststype = PL_laststype;
2432 data->laststatval = PL_laststatval;
2433 data->statcache = PL_statcache;
2434 3128
2435 av_extend (av, AvFILLp (defav) + 1 + 1); 3129MODULE = Coro::State PACKAGE = PerlIO::cede
2436 3130
2437 for (i = 0; i <= AvFILLp (defav); ++i) 3131BOOT:
2438 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3132 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2439 3133
2440 av_push (av, data_sv);
2441 3134
2442 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3135MODULE = Coro::State PACKAGE = Coro::Semaphore
2443 3136
2444 api_ready (self); 3137SV *
2445} 3138new (SV *klass, SV *count = 0)
3139 CODE:
3140 RETVAL = sv_bless (
3141 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3142 GvSTASH (CvGV (cv))
3143 );
3144 OUTPUT:
3145 RETVAL
3146
3147# helper for Coro::Channel
3148SV *
3149_alloc (int count)
3150 CODE:
3151 RETVAL = coro_waitarray_new (aTHX_ count);
3152 OUTPUT:
3153 RETVAL
3154
3155SV *
3156count (SV *self)
3157 CODE:
3158 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3159 OUTPUT:
3160 RETVAL
2446 3161
2447void 3162void
2448_set_state (SV *state) 3163up (SV *self, int adjust = 1)
2449 PROTOTYPE: $ 3164 ALIAS:
3165 adjust = 1
3166 CODE:
3167 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3168
3169void
3170down (...)
3171 CODE:
3172 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3173
3174void
3175wait (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3178
3179void
3180try (SV *self)
3181 PPCODE:
3182{
3183 AV *av = (AV *)SvRV (self);
3184 SV *count_sv = AvARRAY (av)[0];
3185 IV count = SvIVX (count_sv);
3186
3187 if (count > 0)
3188 {
3189 --count;
3190 SvIVX (count_sv) = count;
3191 XSRETURN_YES;
3192 }
3193 else
3194 XSRETURN_NO;
3195}
3196
3197void
3198waiters (SV *self)
3199 PPCODE:
3200{
3201 AV *av = (AV *)SvRV (self);
3202 int wcount = AvFILLp (av) + 1 - 1;
3203
3204 if (GIMME_V == G_SCALAR)
3205 XPUSHs (sv_2mortal (newSViv (wcount)));
3206 else
3207 {
3208 int i;
3209 EXTEND (SP, wcount);
3210 for (i = 1; i <= wcount; ++i)
3211 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3212 }
3213}
3214
3215MODULE = Coro::State PACKAGE = Coro::Signal
3216
3217SV *
3218new (SV *klass)
2450 PPCODE: 3219 CODE:
3220 RETVAL = sv_bless (
3221 coro_waitarray_new (aTHX_ 0),
3222 GvSTASH (CvGV (cv))
3223 );
3224 OUTPUT:
3225 RETVAL
3226
3227void
3228wait (...)
3229 CODE:
3230 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3231
3232void
3233broadcast (SV *self)
3234 CODE:
2451{ 3235{
2452 AV *av = (AV *)SvRV (state); 3236 AV *av = (AV *)SvRV (self);
2453 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3237 coro_signal_wake (aTHX_ av, AvFILLp (av));
2454 int i; 3238}
2455 3239
2456 errno = data->errorno; 3240void
2457 PL_laststype = data->laststype; 3241send (SV *self)
2458 PL_laststatval = data->laststatval; 3242 CODE:
2459 PL_statcache = data->statcache; 3243{
3244 AV *av = (AV *)SvRV (self);
2460 3245
2461 EXTEND (SP, AvFILLp (av)); 3246 if (AvFILLp (av))
2462 for (i = 0; i < AvFILLp (av); ++i) 3247 coro_signal_wake (aTHX_ av, 1);
2463 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3248 else
3249 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2464} 3250}
3251
3252IV
3253awaited (SV *self)
3254 CODE:
3255 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3256 OUTPUT:
3257 RETVAL
2465 3258
2466 3259
2467MODULE = Coro::State PACKAGE = Coro::AnyEvent 3260MODULE = Coro::State PACKAGE = Coro::AnyEvent
2468 3261
2469BOOT: 3262BOOT:
2470 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3263 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2471 3264
2472SV * 3265void
2473_schedule (...) 3266_schedule (...)
2474 PROTOTYPE: @
2475 CODE: 3267 CODE:
2476{ 3268{
2477 static int incede; 3269 static int incede;
2478 3270
2479 api_cede_notself (); 3271 api_cede_notself (aTHX);
2480 3272
2481 ++incede; 3273 ++incede;
2482 while (coro_nready >= incede && api_cede ()) 3274 while (coro_nready >= incede && api_cede (aTHX))
2483 ; 3275 ;
2484 3276
2485 sv_setsv (sv_activity, &PL_sv_undef); 3277 sv_setsv (sv_activity, &PL_sv_undef);
2486 if (coro_nready >= incede) 3278 if (coro_nready >= incede)
2487 { 3279 {
2488 PUSHMARK (SP); 3280 PUSHMARK (SP);
2489 PUTBACK; 3281 PUTBACK;
2490 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3282 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2491 SPAGAIN;
2492 } 3283 }
2493 3284
2494 --incede; 3285 --incede;
2495} 3286}
2496 3287
2497 3288
2498MODULE = Coro::State PACKAGE = PerlIO::cede 3289MODULE = Coro::State PACKAGE = Coro::AIO
2499 3290
2500BOOT: 3291void
2501 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3292_register (char *target, char *proto, SV *req)
3293 CODE:
3294{
3295 CV *req_cv = coro_sv_2cv (aTHX_ req);
3296 /* newXSproto doesn't return the CV on 5.8 */
3297 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3298 sv_setpv ((SV *)slf_cv, proto);
3299 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3300}
2502 3301

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