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Comparing Coro/Coro/State.xs (file contents):
Revision 1.235 by root, Sat May 10 00:13:18 2008 UTC vs.
Revision 1.284 by root, Mon Nov 17 01:05:47 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
… …
45# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
46#endif 47#endif
47 48
48#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
49# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
50# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51#else
52# define REGISTER_STACK(cctx,start,end)
53#endif 51#endif
54 52
55/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
56#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
57 55
58#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
59 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
60 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
80# ifndef IS_PADCONST 78# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
82# endif 80# endif
83#endif 81#endif
84 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
85/* 5.8.8 */ 93/* 5.8.8 */
86#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
87# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
88#endif 96#endif
89#ifndef newSV 97#ifndef newSV
90# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
91#endif 99#endif
92 100
93/* 5.11 */
94#ifndef CxHASARGS
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96#endif
97
98/* 5.8.7 */ 101/* 5.8.7 */
99#ifndef SvRV_set 102#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
101#endif 104#endif
102 105
… …
113# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif 117#endif
115 118
116/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
117 * portable way as possible. */ 120 * portable way as possible. */
118#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
119#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
120 126
121#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
122 128
123#if __GNUC__ >= 3 129#if __GNUC__ >= 3
124# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
127#else 133#else
128# define attribute(x) 134# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
131#endif 137#endif
132 138
133#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
135 141
136#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
137 143
138#include "CoroAPI.h" 144#include "CoroAPI.h"
139 145
140#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
141static perl_mutex coro_mutex; 147# if CORO_PTHREAD
142# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
143# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# endif
144#else
145# define LOCK (void)0
146# define UNLOCK (void)0
147#endif 150#endif
148 151
149/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
150struct io_state 153struct io_state
151{ 154{
155 AV *res;
152 int errorno; 156 int errorno;
153 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
154 int laststatval; 158 int laststatval;
155 Stat_t statcache; 159 Stat_t statcache;
156}; 160};
157 161
162static double (*nvtime)(); /* so why doesn't it take void? */
163
164static U32 cctx_gen;
158static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 168static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
164 171
165static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 174static SV *rv_diehook;
168static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189}; 196};
190 197
191/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
192typedef struct coro_cctx { 199typedef struct coro_cctx
200{
193 struct coro_cctx *next; 201 struct coro_cctx *next;
194 202
195 /* the stack */ 203 /* the stack */
196 void *sptr; 204 void *sptr;
197 size_t ssize; 205 size_t ssize;
… …
200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202 JMPENV *top_env; 210 JMPENV *top_env;
203 coro_context cctx; 211 coro_context cctx;
204 212
213 U32 gen;
205#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
206 int valgrind_id; 215 int valgrind_id;
207#endif 216#endif
208 unsigned char flags; 217 unsigned char flags;
209} coro_cctx; 218} coro_cctx;
… …
214 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
215 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
216}; 225};
217 226
218/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
219typedef struct { 228typedef struct
229{
220 SV *defsv; 230 SV *defsv;
221 AV *defav; 231 AV *defav;
222 SV *errsv; 232 SV *errsv;
223 SV *irsgv; 233 SV *irsgv;
224#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
228 238
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
230 240
231/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
232struct coro { 242struct coro {
233 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 244 coro_cctx *cctx;
235 245
236 /* process data */ 246 /* process data */
247 struct CoroSLF slf_frame; /* saved slf frame */
237 AV *mainstack; 248 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
239 250
240 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
241 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
242 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
243 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
244 256
245 /* statistics */ 257 /* statistics */
246 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
247 259
248 /* coro process data */ 260 /* coro process data */
… …
256 struct coro *next, *prev; 268 struct coro *next, *prev;
257}; 269};
258 270
259typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
260typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273
274static struct CoroSLF slf_frame; /* the current slf frame */
261 275
262/** Coro ********************************************************************/ 276/** Coro ********************************************************************/
263 277
264#define PRIO_MAX 3 278#define PRIO_MAX 3
265#define PRIO_HIGH 1 279#define PRIO_HIGH 1
… …
269#define PRIO_MIN -4 283#define PRIO_MIN -4
270 284
271/* for Coro.pm */ 285/* for Coro.pm */
272static SV *coro_current; 286static SV *coro_current;
273static SV *coro_readyhook; 287static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275static int coro_nready;
276static struct coro *coro_first; 289static struct coro *coro_first;
290#define coro_nready coroapi.nready
277 291
278/** lowlevel stuff **********************************************************/ 292/** lowlevel stuff **********************************************************/
279 293
280static SV * 294static SV *
281coro_get_sv (pTHX_ const char *name, int create) 295coro_get_sv (pTHX_ const char *name, int create)
… …
321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 335 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322#endif 336#endif
323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 337 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324 --AvFILLp (padlist); 338 --AvFILLp (padlist);
325 339
326 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 340 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
327 av_store (newpadlist, 1, (SV *)newpad); 341 av_store (newpadlist, 1, (SV *)newpad);
328 342
329 return newpadlist; 343 return newpadlist;
330} 344}
331 345
… …
361 375
362 /* casting is fun. */ 376 /* casting is fun. */
363 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 377 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
364 free_padlist (aTHX_ padlist); 378 free_padlist (aTHX_ padlist);
365 379
380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381
366 return 0; 382 return 0;
367} 383}
368 384
369#define CORO_MAGIC_type_cv PERL_MAGIC_ext 385#define CORO_MAGIC_type_cv PERL_MAGIC_ext
370#define CORO_MAGIC_type_state PERL_MAGIC_ext 386#define CORO_MAGIC_type_state PERL_MAGIC_ext
… …
372static MGVTBL coro_cv_vtbl = { 388static MGVTBL coro_cv_vtbl = {
373 0, 0, 0, 0, 389 0, 0, 0, 0,
374 coro_cv_free 390 coro_cv_free
375}; 391};
376 392
377#define CORO_MAGIC(sv,type) \ 393#define CORO_MAGIC(sv, type) \
378 SvMAGIC (sv) \ 394 expect_true (SvMAGIC (sv)) \
379 ? SvMAGIC (sv)->mg_type == type \ 395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
380 ? SvMAGIC (sv) \ 396 ? SvMAGIC (sv) \
381 : mg_find (sv, type) \ 397 : mg_find (sv, type) \
382 : 0 398 : 0
383 399
384#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
385#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
386 402
387static struct coro * 403INLINE struct coro *
388SvSTATE_ (pTHX_ SV *coro) 404SvSTATE_ (pTHX_ SV *coro)
389{ 405{
390 HV *stash; 406 HV *stash;
391 MAGIC *mg; 407 MAGIC *mg;
392 408
… …
407 mg = CORO_MAGIC_state (coro); 423 mg = CORO_MAGIC_state (coro);
408 return (struct coro *)mg->mg_ptr; 424 return (struct coro *)mg->mg_ptr;
409} 425}
410 426
411#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
412 441
413/* the next two functions merely cache the padlists */ 442/* the next two functions merely cache the padlists */
414static void 443static void
415get_padlist (pTHX_ CV *cv) 444get_padlist (pTHX_ CV *cv)
416{ 445{
… …
420 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 449 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
421 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 450 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
422 else 451 else
423 { 452 {
424#if CORO_PREFER_PERL_FUNCTIONS 453#if CORO_PREFER_PERL_FUNCTIONS
425 /* this is probably cleaner, but also slower? */ 454 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */
426 CV *cp = Perl_cv_clone (cv); 456 CV *cp = Perl_cv_clone (cv);
427 CvPADLIST (cv) = CvPADLIST (cp); 457 CvPADLIST (cv) = CvPADLIST (cp);
428 CvPADLIST (cp) = 0; 458 CvPADLIST (cp) = 0;
429 SvREFCNT_dec (cp); 459 SvREFCNT_dec (cp);
430#else 460#else
… …
482 CvPADLIST (cv) = (AV *)POPs; 512 CvPADLIST (cv) = (AV *)POPs;
483 } 513 }
484 514
485 PUTBACK; 515 PUTBACK;
486 } 516 }
517
518 slf_frame = c->slf_frame;
487} 519}
488 520
489static void 521static void
490save_perl (pTHX_ Coro__State c) 522save_perl (pTHX_ Coro__State c)
491{ 523{
524 c->slf_frame = slf_frame;
525
492 { 526 {
493 dSP; 527 dSP;
494 I32 cxix = cxstack_ix; 528 I32 cxix = cxstack_ix;
495 PERL_CONTEXT *ccstk = cxstack; 529 PERL_CONTEXT *ccstk = cxstack;
496 PERL_SI *top_si = PL_curstackinfo; 530 PERL_SI *top_si = PL_curstackinfo;
… …
563 #undef VAR 597 #undef VAR
564 } 598 }
565} 599}
566 600
567/* 601/*
568 * allocate various perl stacks. This is an exact copy 602 * allocate various perl stacks. This is almost an exact copy
569 * of perl.c:init_stacks, except that it uses less memory 603 * of perl.c:init_stacks, except that it uses less memory
570 * on the (sometimes correct) assumption that coroutines do 604 * on the (sometimes correct) assumption that coroutines do
571 * not usually need a lot of stackspace. 605 * not usually need a lot of stackspace.
572 */ 606 */
573#if CORO_PREFER_PERL_FUNCTIONS 607#if CORO_PREFER_PERL_FUNCTIONS
… …
616 650
617/* 651/*
618 * destroy the stacks, the callchain etc... 652 * destroy the stacks, the callchain etc...
619 */ 653 */
620static void 654static void
621coro_destroy_stacks (pTHX) 655coro_destruct_stacks (pTHX)
622{ 656{
623 while (PL_curstackinfo->si_next) 657 while (PL_curstackinfo->si_next)
624 PL_curstackinfo = PL_curstackinfo->si_next; 658 PL_curstackinfo = PL_curstackinfo->si_next;
625 659
626 while (PL_curstackinfo) 660 while (PL_curstackinfo)
… …
663 #undef VAR 697 #undef VAR
664 } 698 }
665 else 699 else
666 slot = coro->slot; 700 slot = coro->slot;
667 701
702 if (slot)
703 {
668 rss += sizeof (slot->curstackinfo); 704 rss += sizeof (slot->curstackinfo);
669 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
670 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
671 rss += slot->tmps_max * sizeof (SV *); 707 rss += slot->tmps_max * sizeof (SV *);
672 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
673 rss += slot->scopestack_max * sizeof (I32); 709 rss += slot->scopestack_max * sizeof (I32);
674 rss += slot->savestack_max * sizeof (ANY); 710 rss += slot->savestack_max * sizeof (ANY);
675 711
676#if !PERL_VERSION_ATLEAST (5,10,0) 712#if !PERL_VERSION_ATLEAST (5,10,0)
677 rss += slot->retstack_max * sizeof (OP *); 713 rss += slot->retstack_max * sizeof (OP *);
678#endif 714#endif
715 }
679 } 716 }
680 717
681 return rss; 718 return rss;
682} 719}
683 720
684/** coroutine stack handling ************************************************/ 721/** coroutine stack handling ************************************************/
685 722
686static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 723static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
687static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 724static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
725static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
726
727/* apparently < 5.8.8 */
728#ifndef MgPV_nolen_const
729#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
730 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
731 (const char*)(mg)->mg_ptr)
732#endif
688 733
689/* 734/*
690 * This overrides the default magic get method of %SIG elements. 735 * This overrides the default magic get method of %SIG elements.
691 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
692 * and instead of tryign to save and restore the hash elements, we just provide 737 * and instead of tryign to save and restore the hash elements, we just provide
… …
700{ 745{
701 const char *s = MgPV_nolen_const (mg); 746 const char *s = MgPV_nolen_const (mg);
702 747
703 if (*s == '_') 748 if (*s == '_')
704 { 749 {
705 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 750 SV **svp = 0;
706 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 751
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754
755 if (svp)
756 {
757 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
758 return 0;
759 }
707 } 760 }
708 761
709 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
763}
764
765static int
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{
768 const char *s = MgPV_nolen_const (mg);
769
770 if (*s == '_')
771 {
772 SV **svp = 0;
773
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776
777 if (svp)
778 {
779 SV *old = *svp;
780 *svp = 0;
781 SvREFCNT_dec (old);
782 return 0;
783 }
784 }
785
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
710} 787}
711 788
712static int 789static int
713coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
714{ 791{
… …
729 return 0; 806 return 0;
730 } 807 }
731 } 808 }
732 809
733 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
811}
812
813static void
814prepare_nop (pTHX_ struct coro_transfer_args *ta)
815{
816 /* kind of mega-hacky, but works */
817 ta->next = ta->prev = (struct coro *)ta;
818}
819
820static int
821slf_check_nop (pTHX_ struct CoroSLF *frame)
822{
823 return 0;
734} 824}
735 825
736static void 826static void
737coro_setup (pTHX_ struct coro *coro) 827coro_setup (pTHX_ struct coro *coro)
738{ 828{
… …
761 GvSV (PL_defgv) = newSV (0); 851 GvSV (PL_defgv) = newSV (0);
762 GvAV (PL_defgv) = coro->args; coro->args = 0; 852 GvAV (PL_defgv) = coro->args; coro->args = 0;
763 GvSV (PL_errgv) = newSV (0); 853 GvSV (PL_errgv) = newSV (0);
764 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 854 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
765 PL_rs = newSVsv (GvSV (irsgv)); 855 PL_rs = newSVsv (GvSV (irsgv));
766 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
767 857
768 { 858 {
769 dSP; 859 dSP;
770 LOGOP myop; 860 UNOP myop;
771 861
772 Zero (&myop, 1, LOGOP); 862 Zero (&myop, 1, UNOP);
773 myop.op_next = Nullop; 863 myop.op_next = Nullop;
774 myop.op_flags = OPf_WANT_VOID; 864 myop.op_flags = OPf_WANT_VOID;
775 865
776 PUSHMARK (SP); 866 PUSHMARK (SP);
777 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
780 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
781 SPAGAIN; 871 SPAGAIN;
782 } 872 }
783 873
784 /* this newly created coroutine might be run on an existing cctx which most 874 /* this newly created coroutine might be run on an existing cctx which most
785 * likely was suspended in set_stacklevel, called from entersub. 875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
786 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
787 * so we ENTER here for symmetry
788 */ 876 */
789 ENTER; 877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
790} 879}
791 880
792static void 881static void
793coro_destroy (pTHX_ struct coro *coro) 882coro_destruct (pTHX_ struct coro *coro)
794{ 883{
795 if (!IN_DESTRUCT) 884 if (!IN_DESTRUCT)
796 { 885 {
797 /* restore all saved variables and stuff */ 886 /* restore all saved variables and stuff */
798 LEAVE_SCOPE (0); 887 LEAVE_SCOPE (0);
… …
820 SvREFCNT_dec (PL_warnhook); 909 SvREFCNT_dec (PL_warnhook);
821 910
822 SvREFCNT_dec (coro->saved_deffh); 911 SvREFCNT_dec (coro->saved_deffh);
823 SvREFCNT_dec (coro->throw); 912 SvREFCNT_dec (coro->throw);
824 913
825 coro_destroy_stacks (aTHX); 914 coro_destruct_stacks (aTHX);
826} 915}
827 916
828static void 917INLINE void
829free_coro_mortal (pTHX) 918free_coro_mortal (pTHX)
830{ 919{
831 if (expect_true (coro_mortal)) 920 if (expect_true (coro_mortal))
832 { 921 {
833 SvREFCNT_dec (coro_mortal); 922 SvREFCNT_dec (coro_mortal);
… …
838static int 927static int
839runops_trace (pTHX) 928runops_trace (pTHX)
840{ 929{
841 COP *oldcop = 0; 930 COP *oldcop = 0;
842 int oldcxix = -2; 931 int oldcxix = -2;
843 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
844 coro_cctx *cctx = coro->cctx; 933 coro_cctx *cctx = coro->cctx;
845 934
846 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
847 { 936 {
848 PERL_ASYNC_CHECK (); 937 PERL_ASYNC_CHECK ();
… …
867 : cx->blk_gimme == G_SCALAR ? bot + 1 956 : cx->blk_gimme == G_SCALAR ? bot + 1
868 : bot; 957 : bot;
869 958
870 av_extend (av, top - bot); 959 av_extend (av, top - bot);
871 while (bot < top) 960 while (bot < top)
872 av_push (av, SvREFCNT_inc (*bot++)); 961 av_push (av, SvREFCNT_inc_NN (*bot++));
873 962
874 PL_runops = RUNOPS_DEFAULT; 963 PL_runops = RUNOPS_DEFAULT;
875 ENTER; 964 ENTER;
876 SAVETMPS; 965 SAVETMPS;
877 EXTEND (SP, 3); 966 EXTEND (SP, 3);
… …
957 1046
958 TAINT_NOT; 1047 TAINT_NOT;
959 return 0; 1048 return 0;
960} 1049}
961 1050
1051static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1053{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0;
1056}
1057
962/* inject a fake call to Coro::State::_cctx_init into the execution */ 1058/* inject a fake call to Coro::State::_cctx_init into the execution */
963/* _cctx_init should be careful, as it could be called at almost any time */ 1059/* _cctx_init should be careful, as it could be called at almost any time */
964/* during execution of a perl program */ 1060/* during execution of a perl program */
1061/* also initialises PL_top_env */
965static void NOINLINE 1062static void NOINLINE
966cctx_prepare (pTHX_ coro_cctx *cctx) 1063cctx_prepare (pTHX_ coro_cctx *cctx)
967{ 1064{
968 dSP; 1065 dSP;
969 LOGOP myop; 1066 UNOP myop;
970 1067
971 PL_top_env = &PL_start_env; 1068 PL_top_env = &PL_start_env;
972 1069
973 if (cctx->flags & CC_TRACE) 1070 if (cctx->flags & CC_TRACE)
974 PL_runops = runops_trace; 1071 PL_runops = runops_trace;
975 1072
976 Zero (&myop, 1, LOGOP); 1073 Zero (&myop, 1, UNOP);
977 myop.op_next = PL_op; 1074 myop.op_next = PL_op;
978 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
979 1076
980 PUSHMARK (SP); 1077 PUSHMARK (SP);
981 EXTEND (SP, 2); 1078 EXTEND (SP, 2);
982 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1079 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
983 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
984 PUTBACK; 1081 PUTBACK;
985 PL_op = (OP *)&myop; 1082 PL_op = (OP *)&myop;
986 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
987 SPAGAIN; 1084 SPAGAIN;
988} 1085}
989 1086
1087/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void
1089transfer_tail (pTHX)
1090{
1091 free_coro_mortal (aTHX);
1092}
1093
990/* 1094/*
991 * this is a _very_ stripped down perl interpreter ;) 1095 * this is a _very_ stripped down perl interpreter ;)
992 */ 1096 */
993static void 1097static void
994cctx_run (void *arg) 1098cctx_run (void *arg)
995{ 1099{
1100#ifdef USE_ITHREADS
1101# if CORO_PTHREAD
1102 PERL_SET_CONTEXT (coro_thx);
1103# endif
1104#endif
1105 {
996 dTHX; 1106 dTHX;
997 1107
998 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1108 /* normally we would need to skip the entersub here */
999 UNLOCK; 1109 /* not doing so will re-execute it, which is exactly what we want */
1000
1001 /* we now skip the entersub that lead to transfer() */
1002 PL_op = PL_op->op_next; 1110 /* PL_nop = PL_nop->op_next */
1003 1111
1004 /* inject a fake subroutine call to cctx_init */ 1112 /* inject a fake subroutine call to cctx_init */
1005 cctx_prepare (aTHX_ (coro_cctx *)arg); 1113 cctx_prepare (aTHX_ (coro_cctx *)arg);
1006 1114
1115 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX);
1117
1007 /* somebody or something will hit me for both perl_run and PL_restartop */ 1118 /* somebody or something will hit me for both perl_run and PL_restartop */
1008 PL_restartop = PL_op; 1119 PL_restartop = PL_op;
1009 perl_run (PL_curinterp); 1120 perl_run (PL_curinterp);
1010 1121
1011 /* 1122 /*
1012 * If perl-run returns we assume exit() was being called or the coro 1123 * If perl-run returns we assume exit() was being called or the coro
1013 * fell off the end, which seems to be the only valid (non-bug) 1124 * fell off the end, which seems to be the only valid (non-bug)
1014 * reason for perl_run to return. We try to exit by jumping to the 1125 * reason for perl_run to return. We try to exit by jumping to the
1015 * bootstrap-time "top" top_env, as we cannot restore the "main" 1126 * bootstrap-time "top" top_env, as we cannot restore the "main"
1016 * coroutine as Coro has no such concept 1127 * coroutine as Coro has no such concept
1017 */ 1128 */
1018 PL_top_env = main_top_env; 1129 PL_top_env = main_top_env;
1019 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1130 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1131 }
1020} 1132}
1021 1133
1022static coro_cctx * 1134static coro_cctx *
1023cctx_new () 1135cctx_new ()
1024{ 1136{
1025 coro_cctx *cctx; 1137 coro_cctx *cctx;
1138
1139 ++cctx_count;
1140 New (0, cctx, 1, coro_cctx);
1141
1142 cctx->gen = cctx_gen;
1143 cctx->flags = 0;
1144 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1145
1146 return cctx;
1147}
1148
1149/* create a new cctx only suitable as source */
1150static coro_cctx *
1151cctx_new_empty ()
1152{
1153 coro_cctx *cctx = cctx_new ();
1154
1155 cctx->sptr = 0;
1156 coro_create (&cctx->cctx, 0, 0, 0, 0);
1157
1158 return cctx;
1159}
1160
1161/* create a new cctx suitable as destination/running a perl interpreter */
1162static coro_cctx *
1163cctx_new_run ()
1164{
1165 coro_cctx *cctx = cctx_new ();
1026 void *stack_start; 1166 void *stack_start;
1027 size_t stack_size; 1167 size_t stack_size;
1028 1168
1029 ++cctx_count;
1030
1031 Newz (0, cctx, 1, coro_cctx);
1032
1033#if HAVE_MMAP 1169#if HAVE_MMAP
1034 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1170 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1035 /* mmap supposedly does allocate-on-write for us */ 1171 /* mmap supposedly does allocate-on-write for us */
1036 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1172 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1037 1173
1038 if (cctx->sptr != (void *)-1) 1174 if (cctx->sptr != (void *)-1)
1039 { 1175 {
1040# if CORO_STACKGUARD 1176 #if CORO_STACKGUARD
1041 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1177 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1042# endif 1178 #endif
1043 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1179 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1044 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1180 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1045 cctx->flags |= CC_MAPPED; 1181 cctx->flags |= CC_MAPPED;
1046 } 1182 }
1047 else 1183 else
1048#endif 1184#endif
1049 { 1185 {
1050 cctx->ssize = coro_stacksize * (long)sizeof (long); 1186 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1051 New (0, cctx->sptr, coro_stacksize, long); 1187 New (0, cctx->sptr, cctx_stacksize, long);
1052 1188
1053 if (!cctx->sptr) 1189 if (!cctx->sptr)
1054 { 1190 {
1055 perror ("FATAL: unable to allocate stack for coroutine"); 1191 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1056 _exit (EXIT_FAILURE); 1192 _exit (EXIT_FAILURE);
1057 } 1193 }
1058 1194
1059 stack_start = cctx->sptr; 1195 stack_start = cctx->sptr;
1060 stack_size = cctx->ssize; 1196 stack_size = cctx->ssize;
1061 } 1197 }
1062 1198
1063 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1199 #if CORO_USE_VALGRIND
1200 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1201 #endif
1202
1064 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1203 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1065 1204
1066 return cctx; 1205 return cctx;
1067} 1206}
1068 1207
… …
1071{ 1210{
1072 if (!cctx) 1211 if (!cctx)
1073 return; 1212 return;
1074 1213
1075 --cctx_count; 1214 --cctx_count;
1215 coro_destroy (&cctx->cctx);
1076 1216
1217 /* coro_transfer creates new, empty cctx's */
1218 if (cctx->sptr)
1219 {
1077#if CORO_USE_VALGRIND 1220 #if CORO_USE_VALGRIND
1078 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1221 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1079#endif 1222 #endif
1080 1223
1081#if HAVE_MMAP 1224#if HAVE_MMAP
1082 if (cctx->flags & CC_MAPPED) 1225 if (cctx->flags & CC_MAPPED)
1083 munmap (cctx->sptr, cctx->ssize); 1226 munmap (cctx->sptr, cctx->ssize);
1084 else 1227 else
1085#endif 1228#endif
1086 Safefree (cctx->sptr); 1229 Safefree (cctx->sptr);
1230 }
1087 1231
1088 Safefree (cctx); 1232 Safefree (cctx);
1089} 1233}
1090 1234
1091/* wether this cctx should be destructed */ 1235/* wether this cctx should be destructed */
1092#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1236#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1093 1237
1094static coro_cctx * 1238static coro_cctx *
1095cctx_get (pTHX) 1239cctx_get (pTHX)
1096{ 1240{
1097 while (expect_true (cctx_first)) 1241 while (expect_true (cctx_first))
… …
1104 return cctx; 1248 return cctx;
1105 1249
1106 cctx_destroy (cctx); 1250 cctx_destroy (cctx);
1107 } 1251 }
1108 1252
1109 return cctx_new (); 1253 return cctx_new_run ();
1110} 1254}
1111 1255
1112static void 1256static void
1113cctx_put (coro_cctx *cctx) 1257cctx_put (coro_cctx *cctx)
1114{ 1258{
1259 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1260
1115 /* free another cctx if overlimit */ 1261 /* free another cctx if overlimit */
1116 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1262 if (expect_false (cctx_idle >= cctx_max_idle))
1117 { 1263 {
1118 coro_cctx *first = cctx_first; 1264 coro_cctx *first = cctx_first;
1119 cctx_first = first->next; 1265 cctx_first = first->next;
1120 --cctx_idle; 1266 --cctx_idle;
1121 1267
… …
1133transfer_check (pTHX_ struct coro *prev, struct coro *next) 1279transfer_check (pTHX_ struct coro *prev, struct coro *next)
1134{ 1280{
1135 if (expect_true (prev != next)) 1281 if (expect_true (prev != next))
1136 { 1282 {
1137 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1138 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1139 1285
1140 if (expect_false (next->flags & CF_RUNNING)) 1286 if (expect_false (next->flags & CF_RUNNING))
1141 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1142 1288
1143 if (expect_false (next->flags & CF_DESTROYED)) 1289 if (expect_false (next->flags & CF_DESTROYED))
1144 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1290 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1145 1291
1146#if !PERL_VERSION_ATLEAST (5,10,0) 1292#if !PERL_VERSION_ATLEAST (5,10,0)
1147 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1293 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1148 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1294 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1149#endif 1295#endif
1150 } 1296 }
1151} 1297}
1152 1298
1153/* always use the TRANSFER macro */ 1299/* always use the TRANSFER macro */
1154static void NOINLINE 1300static void NOINLINE
1155transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1156{ 1302{
1157 dSTACKLEVEL; 1303 dSTACKLEVEL;
1158 static volatile int has_throw;
1159 1304
1160 /* sometimes transfer is only called to set idle_sp */ 1305 /* sometimes transfer is only called to set idle_sp */
1161 if (expect_false (!next)) 1306 if (expect_false (!next))
1162 { 1307 {
1163 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1164 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1165 } 1310 }
1166 else if (expect_true (prev != next)) 1311 else if (expect_true (prev != next))
1167 { 1312 {
1168 coro_cctx *prev__cctx; 1313 coro_cctx *prev__cctx;
1169 1314
1170 if (expect_false (prev->flags & CF_NEW)) 1315 if (expect_false (prev->flags & CF_NEW))
1171 { 1316 {
1172 /* create a new empty context */ 1317 /* create a new empty/source context */
1173 Newz (0, prev->cctx, 1, coro_cctx); 1318 prev->cctx = cctx_new_empty ();
1174 prev->flags &= ~CF_NEW; 1319 prev->flags &= ~CF_NEW;
1175 prev->flags |= CF_RUNNING; 1320 prev->flags |= CF_RUNNING;
1176 } 1321 }
1177 1322
1178 prev->flags &= ~CF_RUNNING; 1323 prev->flags &= ~CF_RUNNING;
1179 next->flags |= CF_RUNNING; 1324 next->flags |= CF_RUNNING;
1180
1181 LOCK;
1182 1325
1183 /* first get rid of the old state */ 1326 /* first get rid of the old state */
1184 save_perl (aTHX_ prev); 1327 save_perl (aTHX_ prev);
1185 1328
1186 if (expect_false (next->flags & CF_NEW)) 1329 if (expect_false (next->flags & CF_NEW))
… …
1193 else 1336 else
1194 load_perl (aTHX_ next); 1337 load_perl (aTHX_ next);
1195 1338
1196 prev__cctx = prev->cctx; 1339 prev__cctx = prev->cctx;
1197 1340
1198 /* possibly "free" the cctx */ 1341 /* possibly untie and reuse the cctx */
1199 if (expect_true ( 1342 if (expect_true (
1200 prev__cctx->idle_sp == STACKLEVEL 1343 prev__cctx->idle_sp == (void *)stacklevel
1201 && !(prev__cctx->flags & CC_TRACE) 1344 && !(prev__cctx->flags & CC_TRACE)
1202 && !force_cctx 1345 && !force_cctx
1203 )) 1346 ))
1204 { 1347 {
1205 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1206 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1349 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1207 1350
1208 prev->cctx = 0; 1351 prev->cctx = 0;
1209 1352
1210 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1353 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1211 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1354 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1218 1361
1219 ++next->usecount; 1362 ++next->usecount;
1220 1363
1221 if (expect_true (!next->cctx)) 1364 if (expect_true (!next->cctx))
1222 next->cctx = cctx_get (aTHX); 1365 next->cctx = cctx_get (aTHX);
1223
1224 has_throw = !!next->throw;
1225 1366
1226 if (expect_false (prev__cctx != next->cctx)) 1367 if (expect_false (prev__cctx != next->cctx))
1227 { 1368 {
1228 prev__cctx->top_env = PL_top_env; 1369 prev__cctx->top_env = PL_top_env;
1229 PL_top_env = next->cctx->top_env; 1370 PL_top_env = next->cctx->top_env;
1230 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1231 } 1372 }
1232 1373
1233 free_coro_mortal (aTHX); 1374 transfer_tail (aTHX);
1234 UNLOCK;
1235
1236 if (expect_false (has_throw))
1237 {
1238 struct coro *coro = SvSTATE (coro_current);
1239
1240 if (coro->throw)
1241 {
1242 SV *exception = coro->throw;
1243 coro->throw = 0;
1244 sv_setsv (ERRSV, exception);
1245 croak (0);
1246 }
1247 }
1248 } 1375 }
1249} 1376}
1250
1251struct transfer_args
1252{
1253 struct coro *prev, *next;
1254};
1255 1377
1256#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1378#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1257#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1379#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1258 1380
1259/** high level stuff ********************************************************/ 1381/** high level stuff ********************************************************/
… …
1261static int 1383static int
1262coro_state_destroy (pTHX_ struct coro *coro) 1384coro_state_destroy (pTHX_ struct coro *coro)
1263{ 1385{
1264 if (coro->flags & CF_DESTROYED) 1386 if (coro->flags & CF_DESTROYED)
1265 return 0; 1387 return 0;
1388
1389 if (coro->on_destroy)
1390 coro->on_destroy (aTHX_ coro);
1266 1391
1267 coro->flags |= CF_DESTROYED; 1392 coro->flags |= CF_DESTROYED;
1268 1393
1269 if (coro->flags & CF_READY) 1394 if (coro->flags & CF_READY)
1270 { 1395 {
1271 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1396 /* reduce nready, as destroying a ready coro effectively unreadies it */
1272 /* alternative: look through all ready queues and remove the coro */ 1397 /* alternative: look through all ready queues and remove the coro */
1273 LOCK;
1274 --coro_nready; 1398 --coro_nready;
1275 UNLOCK;
1276 } 1399 }
1277 else 1400 else
1278 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1279 1402
1280 if (coro->mainstack && coro->mainstack != main_mainstack) 1403 if (coro->mainstack && coro->mainstack != main_mainstack)
1281 { 1404 {
1282 struct coro temp; 1405 struct coro temp;
1283 1406
1284 if (coro->flags & CF_RUNNING) 1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1285 croak ("FATAL: tried to destroy currently running coroutine");
1286 1408
1287 save_perl (aTHX_ &temp); 1409 save_perl (aTHX_ &temp);
1288 load_perl (aTHX_ coro); 1410 load_perl (aTHX_ coro);
1289 1411
1290 coro_destroy (aTHX_ coro); 1412 coro_destruct (aTHX_ coro);
1291 1413
1292 load_perl (aTHX_ &temp); 1414 load_perl (aTHX_ &temp);
1293 1415
1294 coro->slot = 0; 1416 coro->slot = 0;
1295 } 1417 }
… …
1341# define MGf_DUP 0 1463# define MGf_DUP 0
1342#endif 1464#endif
1343}; 1465};
1344 1466
1345static void 1467static void
1346prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1468prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1347{ 1469{
1348 ta->prev = SvSTATE (prev_sv); 1470 ta->prev = SvSTATE (prev_sv);
1349 ta->next = SvSTATE (next_sv); 1471 ta->next = SvSTATE (next_sv);
1350 TRANSFER_CHECK (*ta); 1472 TRANSFER_CHECK (*ta);
1351} 1473}
1352 1474
1353static void 1475static void
1354api_transfer (SV *prev_sv, SV *next_sv) 1476api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1355{ 1477{
1356 dTHX;
1357 struct transfer_args ta; 1478 struct coro_transfer_args ta;
1358 1479
1359 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1480 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1360 TRANSFER (ta, 1); 1481 TRANSFER (ta, 1);
1361} 1482}
1362 1483
1363/** Coro ********************************************************************/ 1484/** Coro ********************************************************************/
1364 1485
1365static void 1486INLINE void
1366coro_enq (pTHX_ SV *coro_sv) 1487coro_enq (pTHX_ struct coro *coro)
1367{ 1488{
1368 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1489 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1369} 1490}
1370 1491
1371static SV * 1492INLINE SV *
1372coro_deq (pTHX) 1493coro_deq (pTHX)
1373{ 1494{
1374 int prio; 1495 int prio;
1375 1496
1376 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1497 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1379 1500
1380 return 0; 1501 return 0;
1381} 1502}
1382 1503
1383static int 1504static int
1384api_ready (SV *coro_sv) 1505api_ready (pTHX_ SV *coro_sv)
1385{ 1506{
1386 dTHX;
1387 struct coro *coro; 1507 struct coro *coro;
1388 SV *hook; 1508 SV *sv_hook;
1509 void (*xs_hook)(void);
1389 1510
1390 if (SvROK (coro_sv)) 1511 if (SvROK (coro_sv))
1391 coro_sv = SvRV (coro_sv); 1512 coro_sv = SvRV (coro_sv);
1392 1513
1393 coro = SvSTATE (coro_sv); 1514 coro = SvSTATE (coro_sv);
… …
1395 if (coro->flags & CF_READY) 1516 if (coro->flags & CF_READY)
1396 return 0; 1517 return 0;
1397 1518
1398 coro->flags |= CF_READY; 1519 coro->flags |= CF_READY;
1399 1520
1400 LOCK;
1401
1402 hook = coro_nready ? 0 : coro_readyhook; 1521 sv_hook = coro_nready ? 0 : coro_readyhook;
1522 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1403 1523
1404 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1524 coro_enq (aTHX_ coro);
1405 ++coro_nready; 1525 ++coro_nready;
1406 1526
1407 UNLOCK;
1408
1409 if (hook) 1527 if (sv_hook)
1410 { 1528 {
1411 dSP; 1529 dSP;
1412 1530
1413 ENTER; 1531 ENTER;
1414 SAVETMPS; 1532 SAVETMPS;
1415 1533
1416 PUSHMARK (SP); 1534 PUSHMARK (SP);
1417 PUTBACK; 1535 PUTBACK;
1418 call_sv (hook, G_DISCARD); 1536 call_sv (sv_hook, G_DISCARD);
1419 SPAGAIN; 1537 SPAGAIN;
1420 1538
1421 FREETMPS; 1539 FREETMPS;
1422 LEAVE; 1540 LEAVE;
1423 } 1541 }
1424 1542
1543 if (xs_hook)
1544 xs_hook ();
1545
1425 return 1; 1546 return 1;
1426} 1547}
1427 1548
1428static int 1549static int
1429api_is_ready (SV *coro_sv) 1550api_is_ready (pTHX_ SV *coro_sv)
1430{ 1551{
1431 dTHX;
1432 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1552 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1433} 1553}
1434 1554
1435static void 1555INLINE void
1436prepare_schedule (pTHX_ struct transfer_args *ta) 1556prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1437{ 1557{
1438 SV *prev_sv, *next_sv; 1558 SV *prev_sv, *next_sv;
1439 1559
1440 for (;;) 1560 for (;;)
1441 { 1561 {
1442 LOCK;
1443 next_sv = coro_deq (aTHX); 1562 next_sv = coro_deq (aTHX);
1444 1563
1445 /* nothing to schedule: call the idle handler */ 1564 /* nothing to schedule: call the idle handler */
1446 if (expect_false (!next_sv)) 1565 if (expect_false (!next_sv))
1447 { 1566 {
1448 dSP; 1567 dSP;
1449 UNLOCK;
1450 1568
1451 ENTER; 1569 ENTER;
1452 SAVETMPS; 1570 SAVETMPS;
1453 1571
1454 PUSHMARK (SP); 1572 PUSHMARK (SP);
… …
1459 FREETMPS; 1577 FREETMPS;
1460 LEAVE; 1578 LEAVE;
1461 continue; 1579 continue;
1462 } 1580 }
1463 1581
1464 ta->next = SvSTATE (next_sv); 1582 ta->next = SvSTATE_hv (next_sv);
1465 1583
1466 /* cannot transfer to destroyed coros, skip and look for next */ 1584 /* cannot transfer to destroyed coros, skip and look for next */
1467 if (expect_false (ta->next->flags & CF_DESTROYED)) 1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1468 { 1586 {
1469 UNLOCK;
1470 SvREFCNT_dec (next_sv); 1587 SvREFCNT_dec (next_sv);
1471 /* coro_nready is already taken care of by destroy */ 1588 /* coro_nready has already been taken care of by destroy */
1472 continue; 1589 continue;
1473 } 1590 }
1474 1591
1475 --coro_nready; 1592 --coro_nready;
1476 UNLOCK;
1477 break; 1593 break;
1478 } 1594 }
1479 1595
1480 /* free this only after the transfer */ 1596 /* free this only after the transfer */
1481 prev_sv = SvRV (coro_current); 1597 prev_sv = SvRV (coro_current);
1482 ta->prev = SvSTATE (prev_sv); 1598 ta->prev = SvSTATE_hv (prev_sv);
1483 TRANSFER_CHECK (*ta); 1599 TRANSFER_CHECK (*ta);
1484 assert (ta->next->flags & CF_READY); 1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1485 ta->next->flags &= ~CF_READY; 1601 ta->next->flags &= ~CF_READY;
1486 SvRV_set (coro_current, next_sv); 1602 SvRV_set (coro_current, next_sv);
1487 1603
1488 LOCK;
1489 free_coro_mortal (aTHX); 1604 free_coro_mortal (aTHX);
1490 coro_mortal = prev_sv; 1605 coro_mortal = prev_sv;
1491 UNLOCK;
1492} 1606}
1493 1607
1494static void 1608INLINE void
1495prepare_cede (pTHX_ struct transfer_args *ta) 1609prepare_cede (pTHX_ struct coro_transfer_args *ta)
1496{ 1610{
1497 api_ready (coro_current); 1611 api_ready (aTHX_ coro_current);
1498 prepare_schedule (aTHX_ ta); 1612 prepare_schedule (aTHX_ ta);
1499} 1613}
1500 1614
1615INLINE void
1616prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1617{
1618 SV *prev = SvRV (coro_current);
1619
1620 if (coro_nready)
1621 {
1622 prepare_schedule (aTHX_ ta);
1623 api_ready (aTHX_ prev);
1624 }
1625 else
1626 prepare_nop (aTHX_ ta);
1627}
1628
1629static void
1630api_schedule (pTHX)
1631{
1632 struct coro_transfer_args ta;
1633
1634 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1);
1636}
1637
1501static int 1638static int
1502prepare_cede_notself (pTHX_ struct transfer_args *ta) 1639api_cede (pTHX)
1503{ 1640{
1504 if (coro_nready) 1641 struct coro_transfer_args ta;
1505 { 1642
1506 SV *prev = SvRV (coro_current);
1507 prepare_schedule (aTHX_ ta); 1643 prepare_cede (aTHX_ &ta);
1508 api_ready (prev); 1644
1645 if (expect_true (ta.prev != ta.next))
1646 {
1647 TRANSFER (ta, 1);
1509 return 1; 1648 return 1;
1510 } 1649 }
1511 else 1650 else
1512 return 0; 1651 return 0;
1513} 1652}
1514 1653
1515static void
1516api_schedule (void)
1517{
1518 dTHX;
1519 struct transfer_args ta;
1520
1521 prepare_schedule (aTHX_ &ta);
1522 TRANSFER (ta, 1);
1523}
1524
1525static int 1654static int
1526api_cede (void) 1655api_cede_notself (pTHX)
1527{ 1656{
1528 dTHX; 1657 if (coro_nready)
1658 {
1529 struct transfer_args ta; 1659 struct coro_transfer_args ta;
1530 1660
1531 prepare_cede (aTHX_ &ta); 1661 prepare_cede_notself (aTHX_ &ta);
1532
1533 if (expect_true (ta.prev != ta.next))
1534 {
1535 TRANSFER (ta, 1); 1662 TRANSFER (ta, 1);
1536 return 1; 1663 return 1;
1537 } 1664 }
1538 else 1665 else
1539 return 0; 1666 return 0;
1540} 1667}
1541 1668
1542static int 1669static void
1543api_cede_notself (void)
1544{
1545 dTHX;
1546 struct transfer_args ta;
1547
1548 if (prepare_cede_notself (aTHX_ &ta))
1549 {
1550 TRANSFER (ta, 1);
1551 return 1;
1552 }
1553 else
1554 return 0;
1555}
1556
1557static void
1558api_trace (SV *coro_sv, int flags) 1670api_trace (pTHX_ SV *coro_sv, int flags)
1559{ 1671{
1560 dTHX;
1561 struct coro *coro = SvSTATE (coro_sv); 1672 struct coro *coro = SvSTATE (coro_sv);
1562 1673
1563 if (flags & CC_TRACE) 1674 if (flags & CC_TRACE)
1564 { 1675 {
1565 if (!coro->cctx) 1676 if (!coro->cctx)
1566 coro->cctx = cctx_new (); 1677 coro->cctx = cctx_new_run ();
1567 else if (!(coro->cctx->flags & CC_TRACE)) 1678 else if (!(coro->cctx->flags & CC_TRACE))
1568 croak ("cannot enable tracing on coroutine with custom stack"); 1679 croak ("cannot enable tracing on coroutine with custom stack,");
1569 1680
1570 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1571 } 1682 }
1572 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1573 { 1684 {
… …
1578 else 1689 else
1579 coro->slot->runops = RUNOPS_DEFAULT; 1690 coro->slot->runops = RUNOPS_DEFAULT;
1580 } 1691 }
1581} 1692}
1582 1693
1694/*****************************************************************************/
1695/* PerlIO::cede */
1696
1697typedef struct
1698{
1699 PerlIOBuf base;
1700 NV next, every;
1701} PerlIOCede;
1702
1703static IV
1704PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1705{
1706 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1707
1708 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1709 self->next = nvtime () + self->every;
1710
1711 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1712}
1713
1714static SV *
1715PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1716{
1717 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1718
1719 return newSVnv (self->every);
1720}
1721
1722static IV
1723PerlIOCede_flush (pTHX_ PerlIO *f)
1724{
1725 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1726 double now = nvtime ();
1727
1728 if (now >= self->next)
1729 {
1730 api_cede (aTHX);
1731 self->next = now + self->every;
1732 }
1733
1734 return PerlIOBuf_flush (aTHX_ f);
1735}
1736
1737static PerlIO_funcs PerlIO_cede =
1738{
1739 sizeof(PerlIO_funcs),
1740 "cede",
1741 sizeof(PerlIOCede),
1742 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1743 PerlIOCede_pushed,
1744 PerlIOBuf_popped,
1745 PerlIOBuf_open,
1746 PerlIOBase_binmode,
1747 PerlIOCede_getarg,
1748 PerlIOBase_fileno,
1749 PerlIOBuf_dup,
1750 PerlIOBuf_read,
1751 PerlIOBuf_unread,
1752 PerlIOBuf_write,
1753 PerlIOBuf_seek,
1754 PerlIOBuf_tell,
1755 PerlIOBuf_close,
1756 PerlIOCede_flush,
1757 PerlIOBuf_fill,
1758 PerlIOBase_eof,
1759 PerlIOBase_error,
1760 PerlIOBase_clearerr,
1761 PerlIOBase_setlinebuf,
1762 PerlIOBuf_get_base,
1763 PerlIOBuf_bufsiz,
1764 PerlIOBuf_get_ptr,
1765 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt,
1767};
1768
1769/*****************************************************************************/
1770
1771static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1772static const CV *slf_cv;
1773static SV *slf_arg0;
1774static SV *slf_arg1;
1775static SV *slf_arg2;
1776static I32 slf_ax; /* top of stack, for restore */
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP *
1782pp_restore (pTHX)
1783{
1784 SV **SP = PL_stack_base + slf_ax;
1785
1786 PUSHMARK (SP);
1787
1788 EXTEND (SP, 3);
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1792 PUSHs ((SV *)CvGV (slf_cv));
1793
1794 RETURNOP (slf_restore.op_first);
1795}
1796
1797static void
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 {
1928 dSP;
1929 SV **bot = PL_stack_base + checkmark;
1930 int gimme = GIMME_V;
1931
1932 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1933
1934 /* make sure we put something on the stack in scalar context */
1935 if (gimme == G_SCALAR)
1936 {
1937 if (sp == bot)
1938 XPUSHs (&PL_sv_undef);
1939
1940 SP = bot + 1;
1941 }
1942
1943 PUTBACK;
1944 }
1945
1946 {
1947 struct coro *coro = SvSTATE_current;
1948
1949 if (expect_false (coro->throw))
1950 {
1951 SV *exception = sv_2mortal (coro->throw);
1952
1953 coro->throw = 0;
1954 sv_setsv (ERRSV, exception);
1955 croak (0);
1956 }
1957 }
1958
1959 return NORMAL;
1960}
1961
1962static void
1963api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1964{
1965 SV **arg = PL_stack_base + ax;
1966 int items = PL_stack_sp - arg + 1;
1967
1968 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1969
1970 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1971 && PL_op->op_ppaddr != pp_slf)
1972 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1973
1974#if 0
1975 if (items > 3)
1976 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1977#endif
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_CUSTOM;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1992 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1993 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1994 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1995
1996 PL_op->op_ppaddr = pp_slf;
1997 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1998
1999 PL_op = (OP *)&slf_restore;
2000}
2001
2002/*****************************************************************************/
2003
2004static void
2005coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2006{
2007 SV *count_sv = AvARRAY (av)[0];
2008 IV count = SvIVX (count_sv);
2009
2010 count += adjust;
2011 SvIVX (count_sv) = count;
2012
2013 /* now wake up as many waiters as are expected to lock */
2014 while (count > 0 && AvFILLp (av) > 0)
2015 {
2016 SV *cb;
2017
2018 /* swap first two elements so we can shift a waiter */
2019 AvARRAY (av)[0] = AvARRAY (av)[1];
2020 AvARRAY (av)[1] = count_sv;
2021 cb = av_shift (av);
2022
2023 if (SvOBJECT (cb))
2024 api_ready (aTHX_ cb);
2025 else
2026 croak ("callbacks not yet supported");
2027
2028 SvREFCNT_dec (cb);
2029
2030 --count;
2031 }
2032}
2033
2034static void
2035coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2036{
2037 /* call $sem->adjust (0) to possibly wake up some other waiters */
2038 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2039}
2040
2041static int
2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2043{
2044 AV *av = (AV *)frame->data;
2045 SV *count_sv = AvARRAY (av)[0];
2046
2047 if (SvIVX (count_sv) > 0)
2048 {
2049 SvSTATE_current->on_destroy = 0;
2050 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2051 return 0;
2052 }
2053 else
2054 {
2055 int i;
2056 /* if we were woken up but can't down, we look through the whole */
2057 /* waiters list and only add us if we aren't in there already */
2058 /* this avoids some degenerate memory usage cases */
2059
2060 for (i = 1; i <= AvFILLp (av); ++i)
2061 if (AvARRAY (av)[i] == SvRV (coro_current))
2062 return 1;
2063
2064 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2065 return 1;
2066 }
2067}
2068
2069static void
2070slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2071{
2072 AV *av = (AV *)SvRV (arg [0]);
2073
2074 if (SvIVX (AvARRAY (av)[0]) > 0)
2075 {
2076 frame->data = (void *)av;
2077 frame->prepare = prepare_nop;
2078 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2079 }
2080 else
2081 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule;
2086
2087 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 assert (!SvSTATE_current->on_destroy);//D
2090 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2091 }
2092
2093 frame->check = slf_check_semaphore_down;
2094
2095}
2096
2097/*****************************************************************************/
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{
2107 CV *cv = (CV *)NEWSV (0, 0);
2108
2109 sv_upgrade ((SV *)cv, SVt_PVCV);
2110
2111 CvANON_on (cv);
2112 CvISXSUB_on (cv);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115
2116 return newRV_noinc ((SV *)cv);
2117}
2118
2119/*****************************************************************************/
2120
1583MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1584 2122
1585PROTOTYPES: DISABLE 2123PROTOTYPES: DISABLE
1586 2124
1587BOOT: 2125BOOT:
1588{ 2126{
1589#ifdef USE_ITHREADS 2127#ifdef USE_ITHREADS
1590 MUTEX_INIT (&coro_mutex); 2128# if CORO_PTHREAD
2129 coro_thx = PERL_GET_CONTEXT;
2130# endif
1591#endif 2131#endif
1592 BOOT_PAGESIZE; 2132 BOOT_PAGESIZE;
1593 2133
1594 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2134 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1595 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2135 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1596 2136
1597 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2137 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1598 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2138 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1599 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2139 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1600 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1601 2140
1602 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2141 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1603 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2142 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1604 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2143 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1605 2144
… …
1614 main_top_env = PL_top_env; 2153 main_top_env = PL_top_env;
1615 2154
1616 while (main_top_env->je_prev) 2155 while (main_top_env->je_prev)
1617 main_top_env = main_top_env->je_prev; 2156 main_top_env = main_top_env->je_prev;
1618 2157
2158 {
2159 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2160
2161 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2162 hv_store_ent (PL_custom_op_names, slf,
2163 newSVpv ("coro_slf", 0), 0);
2164
2165 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2166 hv_store_ent (PL_custom_op_descs, slf,
2167 newSVpv ("coro schedule like function", 0), 0);
2168 }
2169
1619 coroapi.ver = CORO_API_VERSION; 2170 coroapi.ver = CORO_API_VERSION;
1620 coroapi.rev = CORO_API_REVISION; 2171 coroapi.rev = CORO_API_REVISION;
2172
1621 coroapi.transfer = api_transfer; 2173 coroapi.transfer = api_transfer;
2174
2175 coroapi.sv_state = SvSTATE_;
2176 coroapi.execute_slf = api_execute_slf;
2177 coroapi.prepare_nop = prepare_nop;
2178 coroapi.prepare_schedule = prepare_schedule;
2179 coroapi.prepare_cede = prepare_cede;
2180 coroapi.prepare_cede_notself = prepare_cede_notself;
2181
2182 {
2183 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2184
2185 if (!svp) croak ("Time::HiRes is required");
2186 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2187
2188 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2189 }
1622 2190
1623 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2191 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1624} 2192}
1625 2193
1626SV * 2194SV *
… …
1650 av_push (coro->args, newSVsv (ST (i))); 2218 av_push (coro->args, newSVsv (ST (i)));
1651} 2219}
1652 OUTPUT: 2220 OUTPUT:
1653 RETVAL 2221 RETVAL
1654 2222
1655# these not obviously related functions are all rolled into the same xs
1656# function to increase chances that they all will call transfer with the same
1657# stack offset
1658void 2223void
1659_set_stacklevel (...) 2224_set_stacklevel (...)
1660 ALIAS: 2225 CODE:
1661 Coro::State::transfer = 1 2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1662 Coro::schedule = 2
1663 Coro::cede = 3
1664 Coro::cede_notself = 4
1665 CODE:
1666{
1667 struct transfer_args ta;
1668 2227
1669 PUTBACK; 2228void
1670 switch (ix) 2229transfer (...)
1671 { 2230 PROTOTYPE: $$
1672 case 0: 2231 CODE:
1673 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2232 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1674 ta.next = 0;
1675 break;
1676
1677 case 1:
1678 if (items != 2)
1679 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1680
1681 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1682 break;
1683
1684 case 2:
1685 prepare_schedule (aTHX_ &ta);
1686 break;
1687
1688 case 3:
1689 prepare_cede (aTHX_ &ta);
1690 break;
1691
1692 case 4:
1693 if (!prepare_cede_notself (aTHX_ &ta))
1694 XSRETURN_EMPTY;
1695
1696 break;
1697 }
1698 SPAGAIN;
1699
1700 BARRIER;
1701 PUTBACK;
1702 TRANSFER (ta, 0);
1703 SPAGAIN; /* might be the sp of a different coroutine now */
1704 /* be extra careful not to ever do anything after TRANSFER */
1705}
1706 2233
1707bool 2234bool
1708_destroy (SV *coro_sv) 2235_destroy (SV *coro_sv)
1709 CODE: 2236 CODE:
1710 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2237 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1717 CODE: 2244 CODE:
1718 _exit (code); 2245 _exit (code);
1719 2246
1720int 2247int
1721cctx_stacksize (int new_stacksize = 0) 2248cctx_stacksize (int new_stacksize = 0)
2249 PROTOTYPE: ;$
1722 CODE: 2250 CODE:
1723 RETVAL = coro_stacksize; 2251 RETVAL = cctx_stacksize;
1724 if (new_stacksize) 2252 if (new_stacksize)
2253 {
1725 coro_stacksize = new_stacksize; 2254 cctx_stacksize = new_stacksize;
2255 ++cctx_gen;
2256 }
1726 OUTPUT: 2257 OUTPUT:
1727 RETVAL 2258 RETVAL
1728 2259
1729int 2260int
2261cctx_max_idle (int max_idle = 0)
2262 PROTOTYPE: ;$
2263 CODE:
2264 RETVAL = cctx_max_idle;
2265 if (max_idle > 1)
2266 cctx_max_idle = max_idle;
2267 OUTPUT:
2268 RETVAL
2269
2270int
1730cctx_count () 2271cctx_count ()
2272 PROTOTYPE:
1731 CODE: 2273 CODE:
1732 RETVAL = cctx_count; 2274 RETVAL = cctx_count;
1733 OUTPUT: 2275 OUTPUT:
1734 RETVAL 2276 RETVAL
1735 2277
1736int 2278int
1737cctx_idle () 2279cctx_idle ()
2280 PROTOTYPE:
1738 CODE: 2281 CODE:
1739 RETVAL = cctx_idle; 2282 RETVAL = cctx_idle;
1740 OUTPUT: 2283 OUTPUT:
1741 RETVAL 2284 RETVAL
1742 2285
1743void 2286void
1744list () 2287list ()
2288 PROTOTYPE:
1745 PPCODE: 2289 PPCODE:
1746{ 2290{
1747 struct coro *coro; 2291 struct coro *coro;
1748 for (coro = coro_first; coro; coro = coro->next) 2292 for (coro = coro_first; coro; coro = coro->next)
1749 if (coro->hv) 2293 if (coro->hv)
… …
1754call (Coro::State coro, SV *coderef) 2298call (Coro::State coro, SV *coderef)
1755 ALIAS: 2299 ALIAS:
1756 eval = 1 2300 eval = 1
1757 CODE: 2301 CODE:
1758{ 2302{
1759 if (coro->mainstack) 2303 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1760 { 2304 {
1761 struct coro temp; 2305 struct coro temp;
1762 2306
1763 if (!(coro->flags & CF_RUNNING)) 2307 if (!(coro->flags & CF_RUNNING))
1764 { 2308 {
… …
1808 RETVAL = boolSV (coro->flags & ix); 2352 RETVAL = boolSV (coro->flags & ix);
1809 OUTPUT: 2353 OUTPUT:
1810 RETVAL 2354 RETVAL
1811 2355
1812void 2356void
2357throw (Coro::State self, SV *throw = &PL_sv_undef)
2358 PROTOTYPE: $;$
2359 CODE:
2360 SvREFCNT_dec (self->throw);
2361 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2362
2363void
1813api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2364api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2365 PROTOTYPE: $;$
2366 C_ARGS: aTHX_ coro, flags
1814 2367
1815SV * 2368SV *
1816has_cctx (Coro::State coro) 2369has_cctx (Coro::State coro)
1817 PROTOTYPE: $ 2370 PROTOTYPE: $
1818 CODE: 2371 CODE:
… …
1826 CODE: 2379 CODE:
1827 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2380 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1828 OUTPUT: 2381 OUTPUT:
1829 RETVAL 2382 RETVAL
1830 2383
1831IV 2384UV
1832rss (Coro::State coro) 2385rss (Coro::State coro)
1833 PROTOTYPE: $ 2386 PROTOTYPE: $
1834 ALIAS: 2387 ALIAS:
1835 usecount = 1 2388 usecount = 1
1836 CODE: 2389 CODE:
… …
1842 OUTPUT: 2395 OUTPUT:
1843 RETVAL 2396 RETVAL
1844 2397
1845void 2398void
1846force_cctx () 2399force_cctx ()
2400 PROTOTYPE:
1847 CODE: 2401 CODE:
1848 struct coro *coro = SvSTATE (coro_current);
1849 coro->cctx->idle_sp = 0; 2402 SvSTATE_current->cctx->idle_sp = 0;
2403
2404void
2405swap_defsv (Coro::State self)
2406 PROTOTYPE: $
2407 ALIAS:
2408 swap_defav = 1
2409 CODE:
2410 if (!self->slot)
2411 croak ("cannot swap state with coroutine that has no saved state,");
2412 else
2413 {
2414 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2416
2417 SV *tmp = *src; *src = *dst; *dst = tmp;
2418 }
1850 2419
1851MODULE = Coro::State PACKAGE = Coro 2420MODULE = Coro::State PACKAGE = Coro
1852 2421
1853BOOT: 2422BOOT:
1854{ 2423{
… …
1872 2441
1873 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2442 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1874 coro_ready[i] = newAV (); 2443 coro_ready[i] = newAV ();
1875 2444
1876 { 2445 {
1877 SV *sv = perl_get_sv ("Coro::API", TRUE); 2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1878 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1879 2447
1880 coroapi.schedule = api_schedule; 2448 coroapi.schedule = api_schedule;
1881 coroapi.cede = api_cede; 2449 coroapi.cede = api_cede;
1882 coroapi.cede_notself = api_cede_notself; 2450 coroapi.cede_notself = api_cede_notself;
1883 coroapi.ready = api_ready; 2451 coroapi.ready = api_ready;
1884 coroapi.is_ready = api_is_ready; 2452 coroapi.is_ready = api_is_ready;
1885 coroapi.nready = &coro_nready; 2453 coroapi.nready = coro_nready;
1886 coroapi.current = coro_current; 2454 coroapi.current = coro_current;
1887 2455
1888 GCoroAPI = &coroapi; 2456 GCoroAPI = &coroapi;
1889 sv_setiv (sv, (IV)&coroapi); 2457 sv_setiv (sv, (IV)&coroapi);
1890 SvREADONLY_on (sv); 2458 SvREADONLY_on (sv);
1891 } 2459 }
1892} 2460}
2461
2462void
2463schedule (...)
2464 CODE:
2465 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2466
2467void
2468cede (...)
2469 CODE:
2470 CORO_EXECUTE_SLF_XS (slf_init_cede);
2471
2472void
2473cede_notself (...)
2474 CODE:
2475 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1893 2476
1894void 2477void
1895_set_current (SV *current) 2478_set_current (SV *current)
1896 PROTOTYPE: $ 2479 PROTOTYPE: $
1897 CODE: 2480 CODE:
1898 SvREFCNT_dec (SvRV (coro_current)); 2481 SvREFCNT_dec (SvRV (coro_current));
1899 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2482 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1900 2483
1901void 2484void
1902_set_readyhook (SV *hook) 2485_set_readyhook (SV *hook)
1903 PROTOTYPE: $ 2486 PROTOTYPE: $
1904 CODE: 2487 CODE:
1905 LOCK;
1906 if (coro_readyhook)
1907 SvREFCNT_dec (coro_readyhook); 2488 SvREFCNT_dec (coro_readyhook);
1908 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2489 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1909 UNLOCK;
1910 2490
1911int 2491int
1912prio (Coro::State coro, int newprio = 0) 2492prio (Coro::State coro, int newprio = 0)
2493 PROTOTYPE: $;$
1913 ALIAS: 2494 ALIAS:
1914 nice = 1 2495 nice = 1
1915 CODE: 2496 CODE:
1916{ 2497{
1917 RETVAL = coro->prio; 2498 RETVAL = coro->prio;
… …
1932 2513
1933SV * 2514SV *
1934ready (SV *self) 2515ready (SV *self)
1935 PROTOTYPE: $ 2516 PROTOTYPE: $
1936 CODE: 2517 CODE:
1937 RETVAL = boolSV (api_ready (self)); 2518 RETVAL = boolSV (api_ready (aTHX_ self));
1938 OUTPUT: 2519 OUTPUT:
1939 RETVAL 2520 RETVAL
1940 2521
1941int 2522int
1942nready (...) 2523nready (...)
… …
1944 CODE: 2525 CODE:
1945 RETVAL = coro_nready; 2526 RETVAL = coro_nready;
1946 OUTPUT: 2527 OUTPUT:
1947 RETVAL 2528 RETVAL
1948 2529
1949void
1950throw (Coro::State self, SV *throw = &PL_sv_undef)
1951 PROTOTYPE: $;$
1952 CODE:
1953 SvREFCNT_dec (self->throw);
1954 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1955
1956void
1957swap_defsv (Coro::State self)
1958 PROTOTYPE: $
1959 ALIAS:
1960 swap_defav = 1
1961 CODE:
1962 if (!self->slot)
1963 croak ("cannot swap state with coroutine that has no saved state");
1964 else
1965 {
1966 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1967 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1968
1969 SV *tmp = *src; *src = *dst; *dst = tmp;
1970 }
1971
1972# for async_pool speedup 2530# for async_pool speedup
1973void 2531void
1974_pool_1 (SV *cb) 2532_pool_1 (SV *cb)
1975 CODE: 2533 CODE:
1976{ 2534{
1977 struct coro *coro = SvSTATE (coro_current);
1978 HV *hv = (HV *)SvRV (coro_current); 2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv ((SV *)hv);
1979 AV *defav = GvAV (PL_defgv); 2537 AV *defav = GvAV (PL_defgv);
1980 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1981 AV *invoke_av; 2539 AV *invoke_av;
1982 int i, len; 2540 int i, len;
1983 2541
1984 if (!invoke) 2542 if (!invoke)
1985 { 2543 {
1986 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2544 SV *old = PL_diehook;
2545 PL_diehook = 0;
2546 SvREFCNT_dec (old);
1987 croak ("\3async_pool terminate\2\n"); 2547 croak ("\3async_pool terminate\2\n");
1988 } 2548 }
1989 2549
1990 SvREFCNT_dec (coro->saved_deffh); 2550 SvREFCNT_dec (coro->saved_deffh);
1991 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2551 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1992 2552
1993 hv_store (hv, "desc", sizeof ("desc") - 1, 2553 hv_store (hv, "desc", sizeof ("desc") - 1,
1994 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2554 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1995 2555
1996 invoke_av = (AV *)SvRV (invoke); 2556 invoke_av = (AV *)SvRV (invoke);
… …
2000 2560
2001 if (len > 0) 2561 if (len > 0)
2002 { 2562 {
2003 av_fill (defav, len - 1); 2563 av_fill (defav, len - 1);
2004 for (i = 0; i < len; ++i) 2564 for (i = 0; i < len; ++i)
2005 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2565 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2006 } 2566 }
2007
2008 SvREFCNT_dec (invoke);
2009} 2567}
2010 2568
2011void 2569void
2012_pool_2 (SV *cb) 2570_pool_2 (SV *cb)
2013 CODE: 2571 CODE:
2014{ 2572{
2015 struct coro *coro = SvSTATE (coro_current); 2573 struct coro *coro = SvSTATE_current;
2016 2574
2017 sv_setsv (cb, &PL_sv_undef); 2575 sv_setsv (cb, &PL_sv_undef);
2018 2576
2019 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2577 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2020 coro->saved_deffh = 0; 2578 coro->saved_deffh = 0;
2021 2579
2022 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2580 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2023 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2581 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2024 { 2582 {
2025 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2583 SV *old = PL_diehook;
2584 PL_diehook = 0;
2585 SvREFCNT_dec (old);
2026 croak ("\3async_pool terminate\2\n"); 2586 croak ("\3async_pool terminate\2\n");
2027 } 2587 }
2028 2588
2029 av_clear (GvAV (PL_defgv)); 2589 av_clear (GvAV (PL_defgv));
2030 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2590 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2031 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2591 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2032 2592
2033 coro->prio = 0; 2593 coro->prio = 0;
2034 2594
2035 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2595 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2036 api_trace (coro_current, 0); 2596 api_trace (aTHX_ coro_current, 0);
2037 2597
2038 av_push (av_async_pool, newSVsv (coro_current)); 2598 av_push (av_async_pool, newSVsv (coro_current));
2039} 2599}
2040 2600
2041 2601
2042MODULE = Coro::State PACKAGE = Coro::AIO 2602MODULE = Coro::State PACKAGE = Coro::AIO
2043 2603
2044SV * 2604void
2045_get_state () 2605_get_state (SV *self)
2606 PROTOTYPE: $
2046 CODE: 2607 PPCODE:
2047{ 2608{
2048 struct io_state *data; 2609 AV *defav = GvAV (PL_defgv);
2049 2610 AV *av = newAV ();
2611 int i;
2050 RETVAL = newSV (sizeof (struct io_state)); 2612 SV *data_sv = newSV (sizeof (struct io_state));
2051 data = (struct io_state *)SvPVX (RETVAL); 2613 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2052 SvCUR_set (RETVAL, sizeof (struct io_state)); 2614 SvCUR_set (data_sv, sizeof (struct io_state));
2053 SvPOK_only (RETVAL); 2615 SvPOK_only (data_sv);
2054 2616
2055 data->errorno = errno; 2617 data->errorno = errno;
2056 data->laststype = PL_laststype; 2618 data->laststype = PL_laststype;
2057 data->laststatval = PL_laststatval; 2619 data->laststatval = PL_laststatval;
2058 data->statcache = PL_statcache; 2620 data->statcache = PL_statcache;
2621
2622 av_extend (av, AvFILLp (defav) + 1 + 1);
2623
2624 for (i = 0; i <= AvFILLp (defav); ++i)
2625 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2626
2627 av_push (av, data_sv);
2628
2629 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2630
2631 api_ready (aTHX_ self);
2059} 2632}
2060 OUTPUT:
2061 RETVAL
2062 2633
2063void 2634void
2064_set_state (char *data_) 2635_set_state (SV *state)
2065 PROTOTYPE: $ 2636 PROTOTYPE: $
2066 CODE: 2637 PPCODE:
2067{ 2638{
2068 struct io_state *data = (void *)data_; 2639 AV *av = (AV *)SvRV (state);
2640 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2641 int i;
2069 2642
2070 errno = data->errorno; 2643 errno = data->errorno;
2071 PL_laststype = data->laststype; 2644 PL_laststype = data->laststype;
2072 PL_laststatval = data->laststatval; 2645 PL_laststatval = data->laststatval;
2073 PL_statcache = data->statcache; 2646 PL_statcache = data->statcache;
2647
2648 EXTEND (SP, AvFILLp (av));
2649 for (i = 0; i < AvFILLp (av); ++i)
2650 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2074} 2651}
2075 2652
2076 2653
2077MODULE = Coro::State PACKAGE = Coro::AnyEvent 2654MODULE = Coro::State PACKAGE = Coro::AnyEvent
2078 2655
2079BOOT: 2656BOOT:
2080 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2657 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2081 2658
2082SV * 2659void
2083_schedule () 2660_schedule (...)
2084 PROTOTYPE: @
2085 CODE: 2661 CODE:
2086{ 2662{
2087 static int incede; 2663 static int incede;
2088 2664
2089 api_cede_notself (); 2665 api_cede_notself (aTHX);
2090 2666
2091 ++incede; 2667 ++incede;
2092 while (coro_nready >= incede && api_cede ()) 2668 while (coro_nready >= incede && api_cede (aTHX))
2093 ; 2669 ;
2094 2670
2095 sv_setsv (sv_activity, &PL_sv_undef); 2671 sv_setsv (sv_activity, &PL_sv_undef);
2096 if (coro_nready >= incede) 2672 if (coro_nready >= incede)
2097 { 2673 {
… …
2102 } 2678 }
2103 2679
2104 --incede; 2680 --incede;
2105} 2681}
2106 2682
2683
2684MODULE = Coro::State PACKAGE = PerlIO::cede
2685
2686BOOT:
2687 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2688
2689MODULE = Coro::State PACKAGE = Coro::Semaphore
2690
2691SV *
2692new (SV *klass, SV *count_ = 0)
2693 CODE:
2694{
2695 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2696 AV *av = newAV ();
2697 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2698 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2699}
2700 OUTPUT:
2701 RETVAL
2702
2703SV *
2704count (SV *self)
2705 CODE:
2706 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2707 OUTPUT:
2708 RETVAL
2709
2710void
2711up (SV *self, int adjust = 1)
2712 ALIAS:
2713 adjust = 1
2714 CODE:
2715 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2716
2717void
2718down (SV *self)
2719 CODE:
2720 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2721
2722void
2723try (SV *self)
2724 PPCODE:
2725{
2726 AV *av = (AV *)SvRV (self);
2727 SV *count_sv = AvARRAY (av)[0];
2728 IV count = SvIVX (count_sv);
2729
2730 if (count > 0)
2731 {
2732 --count;
2733 SvIVX (count_sv) = count;
2734 XSRETURN_YES;
2735 }
2736 else
2737 XSRETURN_NO;
2738}
2739
2740void
2741waiters (SV *self)
2742 CODE:
2743{
2744 AV *av = (AV *)SvRV (self);
2745
2746 if (GIMME_V == G_SCALAR)
2747 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2748 else
2749 {
2750 int i;
2751 EXTEND (SP, AvFILLp (av) + 1 - 1);
2752 for (i = 1; i <= AvFILLp (av); ++i)
2753 PUSHs (newSVsv (AvARRAY (av)[i]));
2754 }
2755}
2756

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