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Comparing Coro/Coro/State.xs (file contents):
Revision 1.236 by root, Sat May 10 17:43:41 2008 UTC vs.
Revision 1.287 by root, Mon Nov 17 07:03:12 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)
144#else
145# define LOCK (void)0
146# define UNLOCK (void)0
147#endif 149# endif
150#endif
148 151
149/* helper storage struct for Coro::AIO */ 152static double (*nvtime)(); /* so why doesn't it take void? */
150struct io_state
151{
152 int errorno;
153 I32 laststype;
154 int laststatval;
155 Stat_t statcache;
156};
157 153
154static U32 cctx_gen;
158static size_t coro_stacksize = CORO_STACKSIZE; 155static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 156static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 157static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 158static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 159static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed after next transfer */ 160static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
164 161
165static GV *irsgv; /* $/ */ 162static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 163static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 164static SV *rv_diehook;
168static SV *rv_warnhook; 165static SV *rv_warnhook;
… …
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 184 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 185 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189}; 186};
190 187
191/* this is a structure representing a c-level coroutine */ 188/* this is a structure representing a c-level coroutine */
192typedef struct coro_cctx { 189typedef struct coro_cctx
190{
193 struct coro_cctx *next; 191 struct coro_cctx *next;
194 192
195 /* the stack */ 193 /* the stack */
196 void *sptr; 194 void *sptr;
197 size_t ssize; 195 size_t ssize;
… …
200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 198 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 */ 199 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202 JMPENV *top_env; 200 JMPENV *top_env;
203 coro_context cctx; 201 coro_context cctx;
204 202
203 U32 gen;
205#if CORO_USE_VALGRIND 204#if CORO_USE_VALGRIND
206 int valgrind_id; 205 int valgrind_id;
207#endif 206#endif
208 unsigned char flags; 207 unsigned char flags;
209} coro_cctx; 208} coro_cctx;
… …
214 CF_NEW = 0x0004, /* has never been switched to */ 213 CF_NEW = 0x0004, /* has never been switched to */
215 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 214 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
216}; 215};
217 216
218/* the structure where most of the perl state is stored, overlaid on the cxstack */ 217/* the structure where most of the perl state is stored, overlaid on the cxstack */
219typedef struct { 218typedef struct
219{
220 SV *defsv; 220 SV *defsv;
221 AV *defav; 221 AV *defav;
222 SV *errsv; 222 SV *errsv;
223 SV *irsgv; 223 SV *irsgv;
224#define VAR(name,type) type name; 224#define VAR(name,type) type name;
… …
228 228
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
230 230
231/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
232struct coro { 232struct coro {
233 /* the c coroutine allocated to this perl coroutine, if any */ 233 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 234 coro_cctx *cctx;
235 235
236 /* process data */ 236 /* state data */
237 struct CoroSLF slf_frame; /* saved slf frame */
237 AV *mainstack; 238 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */ 239 perl_slots *slot; /* basically the saved sp */
239 240
240 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
241 int refcnt; /* coroutines are refcounted, yes */ 242 int refcnt; /* coroutines are refcounted, yes */
242 int flags; /* CF_ flags */ 243 int flags; /* CF_ flags */
243 HV *hv; /* the perl hash associated with this coro, if any */ 244 HV *hv; /* the perl hash associated with this coro, if any */
245 void (*on_destroy)(pTHX_ struct coro *coro);
244 246
245 /* statistics */ 247 /* statistics */
246 int usecount; /* number of transfers to this coro */ 248 int usecount; /* number of transfers to this coro */
247 249
248 /* coro process data */ 250 /* coro process data */
… …
256 struct coro *next, *prev; 258 struct coro *next, *prev;
257}; 259};
258 260
259typedef struct coro *Coro__State; 261typedef struct coro *Coro__State;
260typedef struct coro *Coro__State_or_hashref; 262typedef struct coro *Coro__State_or_hashref;
263
264/* the following variables are effectively part of the perl context */
265/* and get copied between struct coro and these variables */
266/* the mainr easonw e don't support windows process emulation */
267static struct CoroSLF slf_frame; /* the current slf frame */
268static SV *coro_throw;
261 269
262/** Coro ********************************************************************/ 270/** Coro ********************************************************************/
263 271
264#define PRIO_MAX 3 272#define PRIO_MAX 3
265#define PRIO_HIGH 1 273#define PRIO_HIGH 1
… …
269#define PRIO_MIN -4 277#define PRIO_MIN -4
270 278
271/* for Coro.pm */ 279/* for Coro.pm */
272static SV *coro_current; 280static SV *coro_current;
273static SV *coro_readyhook; 281static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 282static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275static int coro_nready;
276static struct coro *coro_first; 283static struct coro *coro_first;
284#define coro_nready coroapi.nready
277 285
278/** lowlevel stuff **********************************************************/ 286/** lowlevel stuff **********************************************************/
279 287
280static SV * 288static SV *
281coro_get_sv (pTHX_ const char *name, int create) 289coro_get_sv (pTHX_ const char *name, int create)
… …
321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 329 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322#endif 330#endif
323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 331 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324 --AvFILLp (padlist); 332 --AvFILLp (padlist);
325 333
326 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 334 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
327 av_store (newpadlist, 1, (SV *)newpad); 335 av_store (newpadlist, 1, (SV *)newpad);
328 336
329 return newpadlist; 337 return newpadlist;
330} 338}
331 339
… …
361 369
362 /* casting is fun. */ 370 /* casting is fun. */
363 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 371 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
364 free_padlist (aTHX_ padlist); 372 free_padlist (aTHX_ padlist);
365 373
374 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
375
366 return 0; 376 return 0;
367} 377}
368 378
369#define CORO_MAGIC_type_cv PERL_MAGIC_ext 379#define CORO_MAGIC_type_cv 26
370#define CORO_MAGIC_type_state PERL_MAGIC_ext 380#define CORO_MAGIC_type_state PERL_MAGIC_ext
371 381
372static MGVTBL coro_cv_vtbl = { 382static MGVTBL coro_cv_vtbl = {
373 0, 0, 0, 0, 383 0, 0, 0, 0,
374 coro_cv_free 384 coro_cv_free
375}; 385};
376 386
387#define CORO_MAGIC_NN(sv, type) \
388 (expect_true (SvMAGIC (sv)->mg_type == type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type))
391
377#define CORO_MAGIC(sv,type) \ 392#define CORO_MAGIC(sv, type) \
378 SvMAGIC (sv) \ 393 (expect_true (SvMAGIC (sv)) \
379 ? SvMAGIC (sv)->mg_type == type \ 394 ? CORO_MAGIC_NN (sv, type) \
380 ? SvMAGIC (sv) \
381 : mg_find (sv, type) \
382 : 0 395 : 0)
383 396
384#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 397#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) 398#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
386 399
387static struct coro * 400INLINE struct coro *
388SvSTATE_ (pTHX_ SV *coro) 401SvSTATE_ (pTHX_ SV *coro)
389{ 402{
390 HV *stash; 403 HV *stash;
391 MAGIC *mg; 404 MAGIC *mg;
392 405
… …
407 mg = CORO_MAGIC_state (coro); 420 mg = CORO_MAGIC_state (coro);
408 return (struct coro *)mg->mg_ptr; 421 return (struct coro *)mg->mg_ptr;
409} 422}
410 423
411#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
425
426/* faster than SvSTATE, but expects a coroutine hv */
427#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
428#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
412 429
413/* the next two functions merely cache the padlists */ 430/* the next two functions merely cache the padlists */
414static void 431static void
415get_padlist (pTHX_ CV *cv) 432get_padlist (pTHX_ CV *cv)
416{ 433{
… …
420 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 437 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
421 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 438 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
422 else 439 else
423 { 440 {
424#if CORO_PREFER_PERL_FUNCTIONS 441#if CORO_PREFER_PERL_FUNCTIONS
425 /* this is probably cleaner, but also slower? */ 442 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */
426 CV *cp = Perl_cv_clone (cv); 444 CV *cp = Perl_cv_clone (cv);
427 CvPADLIST (cv) = CvPADLIST (cp); 445 CvPADLIST (cv) = CvPADLIST (cp);
428 CvPADLIST (cp) = 0; 446 CvPADLIST (cp) = 0;
429 SvREFCNT_dec (cp); 447 SvREFCNT_dec (cp);
430#else 448#else
… …
482 CvPADLIST (cv) = (AV *)POPs; 500 CvPADLIST (cv) = (AV *)POPs;
483 } 501 }
484 502
485 PUTBACK; 503 PUTBACK;
486 } 504 }
505
506 slf_frame = c->slf_frame;
507 coro_throw = c->throw;
487} 508}
488 509
489static void 510static void
490save_perl (pTHX_ Coro__State c) 511save_perl (pTHX_ Coro__State c)
491{ 512{
513 c->throw = coro_throw;
514 c->slf_frame = slf_frame;
515
492 { 516 {
493 dSP; 517 dSP;
494 I32 cxix = cxstack_ix; 518 I32 cxix = cxstack_ix;
495 PERL_CONTEXT *ccstk = cxstack; 519 PERL_CONTEXT *ccstk = cxstack;
496 PERL_SI *top_si = PL_curstackinfo; 520 PERL_SI *top_si = PL_curstackinfo;
… …
563 #undef VAR 587 #undef VAR
564 } 588 }
565} 589}
566 590
567/* 591/*
568 * allocate various perl stacks. This is an exact copy 592 * allocate various perl stacks. This is almost an exact copy
569 * of perl.c:init_stacks, except that it uses less memory 593 * of perl.c:init_stacks, except that it uses less memory
570 * on the (sometimes correct) assumption that coroutines do 594 * on the (sometimes correct) assumption that coroutines do
571 * not usually need a lot of stackspace. 595 * not usually need a lot of stackspace.
572 */ 596 */
573#if CORO_PREFER_PERL_FUNCTIONS 597#if CORO_PREFER_PERL_FUNCTIONS
… …
616 640
617/* 641/*
618 * destroy the stacks, the callchain etc... 642 * destroy the stacks, the callchain etc...
619 */ 643 */
620static void 644static void
621coro_destroy_stacks (pTHX) 645coro_destruct_stacks (pTHX)
622{ 646{
623 while (PL_curstackinfo->si_next) 647 while (PL_curstackinfo->si_next)
624 PL_curstackinfo = PL_curstackinfo->si_next; 648 PL_curstackinfo = PL_curstackinfo->si_next;
625 649
626 while (PL_curstackinfo) 650 while (PL_curstackinfo)
… …
663 #undef VAR 687 #undef VAR
664 } 688 }
665 else 689 else
666 slot = coro->slot; 690 slot = coro->slot;
667 691
692 if (slot)
693 {
668 rss += sizeof (slot->curstackinfo); 694 rss += sizeof (slot->curstackinfo);
669 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 695 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
670 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 696 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
671 rss += slot->tmps_max * sizeof (SV *); 697 rss += slot->tmps_max * sizeof (SV *);
672 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 698 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
673 rss += slot->scopestack_max * sizeof (I32); 699 rss += slot->scopestack_max * sizeof (I32);
674 rss += slot->savestack_max * sizeof (ANY); 700 rss += slot->savestack_max * sizeof (ANY);
675 701
676#if !PERL_VERSION_ATLEAST (5,10,0) 702#if !PERL_VERSION_ATLEAST (5,10,0)
677 rss += slot->retstack_max * sizeof (OP *); 703 rss += slot->retstack_max * sizeof (OP *);
678#endif 704#endif
705 }
679 } 706 }
680 707
681 return rss; 708 return rss;
682} 709}
683 710
684/** coroutine stack handling ************************************************/ 711/** coroutine stack handling ************************************************/
685 712
686static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 713static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
687static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 714static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
715static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
716
717/* apparently < 5.8.8 */
718#ifndef MgPV_nolen_const
719#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
720 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
721 (const char*)(mg)->mg_ptr)
722#endif
688 723
689/* 724/*
690 * This overrides the default magic get method of %SIG elements. 725 * 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 726 * 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 727 * and instead of tryign to save and restore the hash elements, we just provide
… …
700{ 735{
701 const char *s = MgPV_nolen_const (mg); 736 const char *s = MgPV_nolen_const (mg);
702 737
703 if (*s == '_') 738 if (*s == '_')
704 { 739 {
705 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 740 SV **svp = 0;
706 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 741
742 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
743 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
744
745 if (svp)
746 {
747 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
748 return 0;
749 }
707 } 750 }
708 751
709 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 752 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
753}
754
755static int
756coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
757{
758 const char *s = MgPV_nolen_const (mg);
759
760 if (*s == '_')
761 {
762 SV **svp = 0;
763
764 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
765 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
766
767 if (svp)
768 {
769 SV *old = *svp;
770 *svp = 0;
771 SvREFCNT_dec (old);
772 return 0;
773 }
774 }
775
776 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
710} 777}
711 778
712static int 779static int
713coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 780coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
714{ 781{
… …
732 799
733 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 800 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
734} 801}
735 802
736static void 803static void
804prepare_nop (pTHX_ struct coro_transfer_args *ta)
805{
806 /* kind of mega-hacky, but works */
807 ta->next = ta->prev = (struct coro *)ta;
808}
809
810static int
811slf_check_nop (pTHX_ struct CoroSLF *frame)
812{
813 return 0;
814}
815
816static void NOINLINE /* noinline to keep it out of the transfer fast path */
737coro_setup (pTHX_ struct coro *coro) 817coro_setup (pTHX_ struct coro *coro)
738{ 818{
739 /* 819 /*
740 * emulate part of the perl startup here. 820 * emulate part of the perl startup here.
741 */ 821 */
… …
761 GvSV (PL_defgv) = newSV (0); 841 GvSV (PL_defgv) = newSV (0);
762 GvAV (PL_defgv) = coro->args; coro->args = 0; 842 GvAV (PL_defgv) = coro->args; coro->args = 0;
763 GvSV (PL_errgv) = newSV (0); 843 GvSV (PL_errgv) = newSV (0);
764 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 844 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
765 PL_rs = newSVsv (GvSV (irsgv)); 845 PL_rs = newSVsv (GvSV (irsgv));
766 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 846 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
767 847
768 { 848 {
769 dSP; 849 dSP;
770 LOGOP myop; 850 UNOP myop;
771 851
772 Zero (&myop, 1, LOGOP); 852 Zero (&myop, 1, UNOP);
773 myop.op_next = Nullop; 853 myop.op_next = Nullop;
774 myop.op_flags = OPf_WANT_VOID; 854 myop.op_flags = OPf_WANT_VOID;
775 855
776 PUSHMARK (SP); 856 PUSHMARK (SP);
777 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 857 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
780 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 860 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
781 SPAGAIN; 861 SPAGAIN;
782 } 862 }
783 863
784 /* this newly created coroutine might be run on an existing cctx which most 864 /* this newly created coroutine might be run on an existing cctx which most
785 * likely was suspended in set_stacklevel, called from entersub. 865 * 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 */ 866 */
789 ENTER; 867 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
790} 868 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
791 869
870 coro_throw = coro->throw;
871}
872
792static void 873static void
793coro_destroy (pTHX_ struct coro *coro) 874coro_destruct (pTHX_ struct coro *coro)
794{ 875{
795 if (!IN_DESTRUCT) 876 if (!IN_DESTRUCT)
796 { 877 {
797 /* restore all saved variables and stuff */ 878 /* restore all saved variables and stuff */
798 LEAVE_SCOPE (0); 879 LEAVE_SCOPE (0);
… …
818 899
819 SvREFCNT_dec (PL_diehook); 900 SvREFCNT_dec (PL_diehook);
820 SvREFCNT_dec (PL_warnhook); 901 SvREFCNT_dec (PL_warnhook);
821 902
822 SvREFCNT_dec (coro->saved_deffh); 903 SvREFCNT_dec (coro->saved_deffh);
823 SvREFCNT_dec (coro->throw); 904 SvREFCNT_dec (coro_throw);
824 905
825 coro_destroy_stacks (aTHX); 906 coro_destruct_stacks (aTHX);
826} 907}
827 908
828static void 909INLINE void
829free_coro_mortal (pTHX) 910free_coro_mortal (pTHX)
830{ 911{
831 if (expect_true (coro_mortal)) 912 if (expect_true (coro_mortal))
832 { 913 {
833 SvREFCNT_dec (coro_mortal); 914 SvREFCNT_dec (coro_mortal);
… …
838static int 919static int
839runops_trace (pTHX) 920runops_trace (pTHX)
840{ 921{
841 COP *oldcop = 0; 922 COP *oldcop = 0;
842 int oldcxix = -2; 923 int oldcxix = -2;
843 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 924 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
844 coro_cctx *cctx = coro->cctx; 925 coro_cctx *cctx = coro->cctx;
845 926
846 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 927 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
847 { 928 {
848 PERL_ASYNC_CHECK (); 929 PERL_ASYNC_CHECK ();
… …
867 : cx->blk_gimme == G_SCALAR ? bot + 1 948 : cx->blk_gimme == G_SCALAR ? bot + 1
868 : bot; 949 : bot;
869 950
870 av_extend (av, top - bot); 951 av_extend (av, top - bot);
871 while (bot < top) 952 while (bot < top)
872 av_push (av, SvREFCNT_inc (*bot++)); 953 av_push (av, SvREFCNT_inc_NN (*bot++));
873 954
874 PL_runops = RUNOPS_DEFAULT; 955 PL_runops = RUNOPS_DEFAULT;
875 ENTER; 956 ENTER;
876 SAVETMPS; 957 SAVETMPS;
877 EXTEND (SP, 3); 958 EXTEND (SP, 3);
… …
957 1038
958 TAINT_NOT; 1039 TAINT_NOT;
959 return 0; 1040 return 0;
960} 1041}
961 1042
1043static void
1044prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1045{
1046 ta->prev = (struct coro *)cctx;
1047 ta->next = 0;
1048}
1049
962/* inject a fake call to Coro::State::_cctx_init into the execution */ 1050/* 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 */ 1051/* _cctx_init should be careful, as it could be called at almost any time */
964/* during execution of a perl program */ 1052/* during execution of a perl program */
1053/* also initialises PL_top_env */
965static void NOINLINE 1054static void NOINLINE
966cctx_prepare (pTHX_ coro_cctx *cctx) 1055cctx_prepare (pTHX_ coro_cctx *cctx)
967{ 1056{
968 dSP; 1057 dSP;
969 LOGOP myop; 1058 UNOP myop;
970 1059
971 PL_top_env = &PL_start_env; 1060 PL_top_env = &PL_start_env;
972 1061
973 if (cctx->flags & CC_TRACE) 1062 if (cctx->flags & CC_TRACE)
974 PL_runops = runops_trace; 1063 PL_runops = runops_trace;
975 1064
976 Zero (&myop, 1, LOGOP); 1065 Zero (&myop, 1, UNOP);
977 myop.op_next = PL_op; 1066 myop.op_next = PL_op;
978 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1067 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
979 1068
980 PUSHMARK (SP); 1069 PUSHMARK (SP);
981 EXTEND (SP, 2); 1070 EXTEND (SP, 2);
982 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1071 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
983 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1072 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
984 PUTBACK; 1073 PUTBACK;
985 PL_op = (OP *)&myop; 1074 PL_op = (OP *)&myop;
986 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1075 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
987 SPAGAIN; 1076 SPAGAIN;
988} 1077}
989 1078
1079/* the tail of transfer: execute stuff we can only do after a transfer */
1080INLINE void
1081transfer_tail (pTHX)
1082{
1083 free_coro_mortal (aTHX);
1084}
1085
990/* 1086/*
991 * this is a _very_ stripped down perl interpreter ;) 1087 * this is a _very_ stripped down perl interpreter ;)
992 */ 1088 */
993static void 1089static void
994cctx_run (void *arg) 1090cctx_run (void *arg)
995{ 1091{
1092#ifdef USE_ITHREADS
1093# if CORO_PTHREAD
1094 PERL_SET_CONTEXT (coro_thx);
1095# endif
1096#endif
1097 {
996 dTHX; 1098 dTHX;
997 1099
998 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1100 /* normally we would need to skip the entersub here */
999 UNLOCK; 1101 /* 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; 1102 /* PL_nop = PL_nop->op_next */
1003 1103
1004 /* inject a fake subroutine call to cctx_init */ 1104 /* inject a fake subroutine call to cctx_init */
1005 cctx_prepare (aTHX_ (coro_cctx *)arg); 1105 cctx_prepare (aTHX_ (coro_cctx *)arg);
1006 1106
1107 /* cctx_run is the alternative tail of transfer() */
1108 transfer_tail (aTHX);
1109
1007 /* somebody or something will hit me for both perl_run and PL_restartop */ 1110 /* somebody or something will hit me for both perl_run and PL_restartop */
1008 PL_restartop = PL_op; 1111 PL_restartop = PL_op;
1009 perl_run (PL_curinterp); 1112 perl_run (PL_curinterp);
1010 1113
1011 /* 1114 /*
1012 * If perl-run returns we assume exit() was being called or the coro 1115 * 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) 1116 * 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 1117 * 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" 1118 * bootstrap-time "top" top_env, as we cannot restore the "main"
1016 * coroutine as Coro has no such concept 1119 * coroutine as Coro has no such concept
1017 */ 1120 */
1018 PL_top_env = main_top_env; 1121 PL_top_env = main_top_env;
1019 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1122 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1123 }
1020} 1124}
1021 1125
1022static coro_cctx * 1126static coro_cctx *
1023cctx_new () 1127cctx_new ()
1024{ 1128{
1025 coro_cctx *cctx; 1129 coro_cctx *cctx;
1130
1131 ++cctx_count;
1132 New (0, cctx, 1, coro_cctx);
1133
1134 cctx->gen = cctx_gen;
1135 cctx->flags = 0;
1136 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1137
1138 return cctx;
1139}
1140
1141/* create a new cctx only suitable as source */
1142static coro_cctx *
1143cctx_new_empty ()
1144{
1145 coro_cctx *cctx = cctx_new ();
1146
1147 cctx->sptr = 0;
1148 coro_create (&cctx->cctx, 0, 0, 0, 0);
1149
1150 return cctx;
1151}
1152
1153/* create a new cctx suitable as destination/running a perl interpreter */
1154static coro_cctx *
1155cctx_new_run ()
1156{
1157 coro_cctx *cctx = cctx_new ();
1026 void *stack_start; 1158 void *stack_start;
1027 size_t stack_size; 1159 size_t stack_size;
1028 1160
1029 ++cctx_count;
1030
1031 Newz (0, cctx, 1, coro_cctx);
1032
1033#if HAVE_MMAP 1161#if HAVE_MMAP
1034 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1162 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1035 /* mmap supposedly does allocate-on-write for us */ 1163 /* 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); 1164 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1037 1165
1038 if (cctx->sptr != (void *)-1) 1166 if (cctx->sptr != (void *)-1)
1039 { 1167 {
1040# if CORO_STACKGUARD 1168 #if CORO_STACKGUARD
1041 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1169 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1042# endif 1170 #endif
1043 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1171 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1044 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1172 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1045 cctx->flags |= CC_MAPPED; 1173 cctx->flags |= CC_MAPPED;
1046 } 1174 }
1047 else 1175 else
1048#endif 1176#endif
1049 { 1177 {
1050 cctx->ssize = coro_stacksize * (long)sizeof (long); 1178 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1051 New (0, cctx->sptr, coro_stacksize, long); 1179 New (0, cctx->sptr, cctx_stacksize, long);
1052 1180
1053 if (!cctx->sptr) 1181 if (!cctx->sptr)
1054 { 1182 {
1055 perror ("FATAL: unable to allocate stack for coroutine"); 1183 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1056 _exit (EXIT_FAILURE); 1184 _exit (EXIT_FAILURE);
1057 } 1185 }
1058 1186
1059 stack_start = cctx->sptr; 1187 stack_start = cctx->sptr;
1060 stack_size = cctx->ssize; 1188 stack_size = cctx->ssize;
1061 } 1189 }
1062 1190
1063 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1191 #if CORO_USE_VALGRIND
1192 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1193 #endif
1194
1064 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1195 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1065 1196
1066 return cctx; 1197 return cctx;
1067} 1198}
1068 1199
… …
1071{ 1202{
1072 if (!cctx) 1203 if (!cctx)
1073 return; 1204 return;
1074 1205
1075 --cctx_count; 1206 --cctx_count;
1207 coro_destroy (&cctx->cctx);
1076 1208
1209 /* coro_transfer creates new, empty cctx's */
1210 if (cctx->sptr)
1211 {
1077#if CORO_USE_VALGRIND 1212 #if CORO_USE_VALGRIND
1078 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1213 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1079#endif 1214 #endif
1080 1215
1081#if HAVE_MMAP 1216#if HAVE_MMAP
1082 if (cctx->flags & CC_MAPPED) 1217 if (cctx->flags & CC_MAPPED)
1083 munmap (cctx->sptr, cctx->ssize); 1218 munmap (cctx->sptr, cctx->ssize);
1084 else 1219 else
1085#endif 1220#endif
1086 Safefree (cctx->sptr); 1221 Safefree (cctx->sptr);
1222 }
1087 1223
1088 Safefree (cctx); 1224 Safefree (cctx);
1089} 1225}
1090 1226
1091/* wether this cctx should be destructed */ 1227/* wether this cctx should be destructed */
1092#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1228#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1093 1229
1094static coro_cctx * 1230static coro_cctx *
1095cctx_get (pTHX) 1231cctx_get (pTHX)
1096{ 1232{
1097 while (expect_true (cctx_first)) 1233 while (expect_true (cctx_first))
… …
1104 return cctx; 1240 return cctx;
1105 1241
1106 cctx_destroy (cctx); 1242 cctx_destroy (cctx);
1107 } 1243 }
1108 1244
1109 return cctx_new (); 1245 return cctx_new_run ();
1110} 1246}
1111 1247
1112static void 1248static void
1113cctx_put (coro_cctx *cctx) 1249cctx_put (coro_cctx *cctx)
1114{ 1250{
1251 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1252
1115 /* free another cctx if overlimit */ 1253 /* free another cctx if overlimit */
1116 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1254 if (expect_false (cctx_idle >= cctx_max_idle))
1117 { 1255 {
1118 coro_cctx *first = cctx_first; 1256 coro_cctx *first = cctx_first;
1119 cctx_first = first->next; 1257 cctx_first = first->next;
1120 --cctx_idle; 1258 --cctx_idle;
1121 1259
… …
1130/** coroutine switching *****************************************************/ 1268/** coroutine switching *****************************************************/
1131 1269
1132static void 1270static void
1133transfer_check (pTHX_ struct coro *prev, struct coro *next) 1271transfer_check (pTHX_ struct coro *prev, struct coro *next)
1134{ 1272{
1273 /* TODO: throwing up here is considered harmful */
1274
1135 if (expect_true (prev != next)) 1275 if (expect_true (prev != next))
1136 { 1276 {
1137 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1277 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"); 1278 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1139 1279
1140 if (expect_false (next->flags & CF_RUNNING)) 1280 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"); 1281 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1142 1282
1143 if (expect_false (next->flags & CF_DESTROYED)) 1283 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"); 1284 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1145 1285
1146#if !PERL_VERSION_ATLEAST (5,10,0) 1286#if !PERL_VERSION_ATLEAST (5,10,0)
1147 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1287 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"); 1288 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1149#endif 1289#endif
1150 } 1290 }
1151} 1291}
1152 1292
1153/* always use the TRANSFER macro */ 1293/* always use the TRANSFER macro */
1154static void NOINLINE 1294static void NOINLINE /* noinline so we have a fixed stackframe */
1155transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1295transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1156{ 1296{
1157 dSTACKLEVEL; 1297 dSTACKLEVEL;
1158 static volatile int has_throw;
1159 1298
1160 /* sometimes transfer is only called to set idle_sp */ 1299 /* sometimes transfer is only called to set idle_sp */
1161 if (expect_false (!next)) 1300 if (expect_false (!next))
1162 { 1301 {
1163 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1302 ((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 */ 1303 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1165 } 1304 }
1166 else if (expect_true (prev != next)) 1305 else if (expect_true (prev != next))
1167 { 1306 {
1168 coro_cctx *prev__cctx; 1307 coro_cctx *prev__cctx;
1169 1308
1170 if (expect_false (prev->flags & CF_NEW)) 1309 if (expect_false (prev->flags & CF_NEW))
1171 { 1310 {
1172 /* create a new empty context */ 1311 /* create a new empty/source context */
1173 Newz (0, prev->cctx, 1, coro_cctx); 1312 prev->cctx = cctx_new_empty ();
1174 prev->flags &= ~CF_NEW; 1313 prev->flags &= ~CF_NEW;
1175 prev->flags |= CF_RUNNING; 1314 prev->flags |= CF_RUNNING;
1176 } 1315 }
1177 1316
1178 prev->flags &= ~CF_RUNNING; 1317 prev->flags &= ~CF_RUNNING;
1179 next->flags |= CF_RUNNING; 1318 next->flags |= CF_RUNNING;
1180
1181 LOCK;
1182 1319
1183 /* first get rid of the old state */ 1320 /* first get rid of the old state */
1184 save_perl (aTHX_ prev); 1321 save_perl (aTHX_ prev);
1185 1322
1186 if (expect_false (next->flags & CF_NEW)) 1323 if (expect_false (next->flags & CF_NEW))
… …
1193 else 1330 else
1194 load_perl (aTHX_ next); 1331 load_perl (aTHX_ next);
1195 1332
1196 prev__cctx = prev->cctx; 1333 prev__cctx = prev->cctx;
1197 1334
1198 /* possibly "free" the cctx */ 1335 /* possibly untie and reuse the cctx */
1199 if (expect_true ( 1336 if (expect_true (
1200 prev__cctx->idle_sp == STACKLEVEL 1337 prev__cctx->idle_sp == (void *)stacklevel
1201 && !(prev__cctx->flags & CC_TRACE) 1338 && !(prev__cctx->flags & CC_TRACE)
1202 && !force_cctx 1339 && !force_cctx
1203 )) 1340 ))
1204 { 1341 {
1205 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1342 /* 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)); 1343 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1207 1344
1208 prev->cctx = 0; 1345 prev->cctx = 0;
1209 1346
1210 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1347 /* 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 */ 1348 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1218 1355
1219 ++next->usecount; 1356 ++next->usecount;
1220 1357
1221 if (expect_true (!next->cctx)) 1358 if (expect_true (!next->cctx))
1222 next->cctx = cctx_get (aTHX); 1359 next->cctx = cctx_get (aTHX);
1223
1224 has_throw = !!next->throw;
1225 1360
1226 if (expect_false (prev__cctx != next->cctx)) 1361 if (expect_false (prev__cctx != next->cctx))
1227 { 1362 {
1228 prev__cctx->top_env = PL_top_env; 1363 prev__cctx->top_env = PL_top_env;
1229 PL_top_env = next->cctx->top_env; 1364 PL_top_env = next->cctx->top_env;
1230 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1365 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1231 } 1366 }
1232 1367
1233 free_coro_mortal (aTHX); 1368 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 } 1369 }
1249} 1370}
1250
1251struct transfer_args
1252{
1253 struct coro *prev, *next;
1254};
1255 1371
1256#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1372#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) 1373#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1258 1374
1259/** high level stuff ********************************************************/ 1375/** high level stuff ********************************************************/
… …
1261static int 1377static int
1262coro_state_destroy (pTHX_ struct coro *coro) 1378coro_state_destroy (pTHX_ struct coro *coro)
1263{ 1379{
1264 if (coro->flags & CF_DESTROYED) 1380 if (coro->flags & CF_DESTROYED)
1265 return 0; 1381 return 0;
1382
1383 if (coro->on_destroy)
1384 coro->on_destroy (aTHX_ coro);
1266 1385
1267 coro->flags |= CF_DESTROYED; 1386 coro->flags |= CF_DESTROYED;
1268 1387
1269 if (coro->flags & CF_READY) 1388 if (coro->flags & CF_READY)
1270 { 1389 {
1271 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1390 /* reduce nready, as destroying a ready coro effectively unreadies it */
1272 /* alternative: look through all ready queues and remove the coro */ 1391 /* alternative: look through all ready queues and remove the coro */
1273 LOCK;
1274 --coro_nready; 1392 --coro_nready;
1275 UNLOCK;
1276 } 1393 }
1277 else 1394 else
1278 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1395 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1279 1396
1280 if (coro->mainstack && coro->mainstack != main_mainstack) 1397 if (coro->mainstack && coro->mainstack != main_mainstack)
1281 { 1398 {
1282 struct coro temp; 1399 struct coro temp;
1283 1400
1284 if (coro->flags & CF_RUNNING) 1401 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1285 croak ("FATAL: tried to destroy currently running coroutine");
1286 1402
1287 save_perl (aTHX_ &temp); 1403 save_perl (aTHX_ &temp);
1288 load_perl (aTHX_ coro); 1404 load_perl (aTHX_ coro);
1289 1405
1290 coro_destroy (aTHX_ coro); 1406 coro_destruct (aTHX_ coro);
1291 1407
1292 load_perl (aTHX_ &temp); 1408 load_perl (aTHX_ &temp);
1293 1409
1294 coro->slot = 0; 1410 coro->slot = 0;
1295 } 1411 }
… …
1341# define MGf_DUP 0 1457# define MGf_DUP 0
1342#endif 1458#endif
1343}; 1459};
1344 1460
1345static void 1461static void
1346prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1462prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1347{ 1463{
1348 ta->prev = SvSTATE (prev_sv); 1464 ta->prev = SvSTATE (prev_sv);
1349 ta->next = SvSTATE (next_sv); 1465 ta->next = SvSTATE (next_sv);
1350 TRANSFER_CHECK (*ta); 1466 TRANSFER_CHECK (*ta);
1351} 1467}
1352 1468
1353static void 1469static void
1354api_transfer (SV *prev_sv, SV *next_sv) 1470api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1355{ 1471{
1356 dTHX;
1357 struct transfer_args ta; 1472 struct coro_transfer_args ta;
1358 1473
1359 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1474 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1360 TRANSFER (ta, 1); 1475 TRANSFER (ta, 1);
1361} 1476}
1362 1477
1363/** Coro ********************************************************************/ 1478/** Coro ********************************************************************/
1364 1479
1365static void 1480INLINE void
1366coro_enq (pTHX_ SV *coro_sv) 1481coro_enq (pTHX_ struct coro *coro)
1367{ 1482{
1368 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1483 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1369} 1484}
1370 1485
1371static SV * 1486INLINE SV *
1372coro_deq (pTHX) 1487coro_deq (pTHX)
1373{ 1488{
1374 int prio; 1489 int prio;
1375 1490
1376 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1491 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1379 1494
1380 return 0; 1495 return 0;
1381} 1496}
1382 1497
1383static int 1498static int
1384api_ready (SV *coro_sv) 1499api_ready (pTHX_ SV *coro_sv)
1385{ 1500{
1386 dTHX;
1387 struct coro *coro; 1501 struct coro *coro;
1388 SV *hook; 1502 SV *sv_hook;
1503 void (*xs_hook)(void);
1389 1504
1390 if (SvROK (coro_sv)) 1505 if (SvROK (coro_sv))
1391 coro_sv = SvRV (coro_sv); 1506 coro_sv = SvRV (coro_sv);
1392 1507
1393 coro = SvSTATE (coro_sv); 1508 coro = SvSTATE (coro_sv);
… …
1395 if (coro->flags & CF_READY) 1510 if (coro->flags & CF_READY)
1396 return 0; 1511 return 0;
1397 1512
1398 coro->flags |= CF_READY; 1513 coro->flags |= CF_READY;
1399 1514
1400 LOCK;
1401
1402 hook = coro_nready ? 0 : coro_readyhook; 1515 sv_hook = coro_nready ? 0 : coro_readyhook;
1516 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1403 1517
1404 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1518 coro_enq (aTHX_ coro);
1405 ++coro_nready; 1519 ++coro_nready;
1406 1520
1407 UNLOCK;
1408
1409 if (hook) 1521 if (sv_hook)
1410 { 1522 {
1411 dSP; 1523 dSP;
1412 1524
1413 ENTER; 1525 ENTER;
1414 SAVETMPS; 1526 SAVETMPS;
1415 1527
1416 PUSHMARK (SP); 1528 PUSHMARK (SP);
1417 PUTBACK; 1529 PUTBACK;
1418 call_sv (hook, G_DISCARD); 1530 call_sv (sv_hook, G_DISCARD);
1419 SPAGAIN; 1531 SPAGAIN;
1420 1532
1421 FREETMPS; 1533 FREETMPS;
1422 LEAVE; 1534 LEAVE;
1423 } 1535 }
1424 1536
1537 if (xs_hook)
1538 xs_hook ();
1539
1425 return 1; 1540 return 1;
1426} 1541}
1427 1542
1428static int 1543static int
1429api_is_ready (SV *coro_sv) 1544api_is_ready (pTHX_ SV *coro_sv)
1430{ 1545{
1431 dTHX;
1432 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1546 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1433} 1547}
1434 1548
1435static void 1549INLINE void
1436prepare_schedule (pTHX_ struct transfer_args *ta) 1550prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1437{ 1551{
1438 SV *prev_sv, *next_sv; 1552 SV *prev_sv, *next_sv;
1439 1553
1440 for (;;) 1554 for (;;)
1441 { 1555 {
1442 LOCK;
1443 next_sv = coro_deq (aTHX); 1556 next_sv = coro_deq (aTHX);
1444 1557
1445 /* nothing to schedule: call the idle handler */ 1558 /* nothing to schedule: call the idle handler */
1446 if (expect_false (!next_sv)) 1559 if (expect_false (!next_sv))
1447 { 1560 {
1448 dSP; 1561 dSP;
1449 UNLOCK;
1450 1562
1451 ENTER; 1563 ENTER;
1452 SAVETMPS; 1564 SAVETMPS;
1453 1565
1454 PUSHMARK (SP); 1566 PUSHMARK (SP);
… …
1459 FREETMPS; 1571 FREETMPS;
1460 LEAVE; 1572 LEAVE;
1461 continue; 1573 continue;
1462 } 1574 }
1463 1575
1464 ta->next = SvSTATE (next_sv); 1576 ta->next = SvSTATE_hv (next_sv);
1465 1577
1466 /* cannot transfer to destroyed coros, skip and look for next */ 1578 /* cannot transfer to destroyed coros, skip and look for next */
1467 if (expect_false (ta->next->flags & CF_DESTROYED)) 1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1468 { 1580 {
1469 UNLOCK;
1470 SvREFCNT_dec (next_sv); 1581 SvREFCNT_dec (next_sv);
1471 /* coro_nready is already taken care of by destroy */ 1582 /* coro_nready has already been taken care of by destroy */
1472 continue; 1583 continue;
1473 } 1584 }
1474 1585
1475 --coro_nready; 1586 --coro_nready;
1476 UNLOCK;
1477 break; 1587 break;
1478 } 1588 }
1479 1589
1480 /* free this only after the transfer */ 1590 /* free this only after the transfer */
1481 prev_sv = SvRV (coro_current); 1591 prev_sv = SvRV (coro_current);
1482 ta->prev = SvSTATE (prev_sv); 1592 ta->prev = SvSTATE_hv (prev_sv);
1483 TRANSFER_CHECK (*ta); 1593 TRANSFER_CHECK (*ta);
1484 assert (ta->next->flags & CF_READY); 1594 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1485 ta->next->flags &= ~CF_READY; 1595 ta->next->flags &= ~CF_READY;
1486 SvRV_set (coro_current, next_sv); 1596 SvRV_set (coro_current, next_sv);
1487 1597
1488 LOCK;
1489 free_coro_mortal (aTHX); 1598 free_coro_mortal (aTHX);
1490 coro_mortal = prev_sv; 1599 coro_mortal = prev_sv;
1491 UNLOCK;
1492} 1600}
1493 1601
1494static void 1602INLINE void
1495prepare_cede (pTHX_ struct transfer_args *ta) 1603prepare_cede (pTHX_ struct coro_transfer_args *ta)
1496{ 1604{
1497 api_ready (coro_current); 1605 api_ready (aTHX_ coro_current);
1498 prepare_schedule (aTHX_ ta); 1606 prepare_schedule (aTHX_ ta);
1499} 1607}
1500 1608
1609INLINE void
1610prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1611{
1612 SV *prev = SvRV (coro_current);
1613
1614 if (coro_nready)
1615 {
1616 prepare_schedule (aTHX_ ta);
1617 api_ready (aTHX_ prev);
1618 }
1619 else
1620 prepare_nop (aTHX_ ta);
1621}
1622
1623static void
1624api_schedule (pTHX)
1625{
1626 struct coro_transfer_args ta;
1627
1628 prepare_schedule (aTHX_ &ta);
1629 TRANSFER (ta, 1);
1630}
1631
1501static int 1632static int
1502prepare_cede_notself (pTHX_ struct transfer_args *ta) 1633api_cede (pTHX)
1503{ 1634{
1504 if (coro_nready) 1635 struct coro_transfer_args ta;
1505 { 1636
1506 SV *prev = SvRV (coro_current);
1507 prepare_schedule (aTHX_ ta); 1637 prepare_cede (aTHX_ &ta);
1508 api_ready (prev); 1638
1639 if (expect_true (ta.prev != ta.next))
1640 {
1641 TRANSFER (ta, 1);
1509 return 1; 1642 return 1;
1510 } 1643 }
1511 else 1644 else
1512 return 0; 1645 return 0;
1513} 1646}
1514 1647
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 1648static int
1526api_cede (void) 1649api_cede_notself (pTHX)
1527{ 1650{
1528 dTHX; 1651 if (coro_nready)
1652 {
1529 struct transfer_args ta; 1653 struct coro_transfer_args ta;
1530 1654
1531 prepare_cede (aTHX_ &ta); 1655 prepare_cede_notself (aTHX_ &ta);
1532
1533 if (expect_true (ta.prev != ta.next))
1534 {
1535 TRANSFER (ta, 1); 1656 TRANSFER (ta, 1);
1536 return 1; 1657 return 1;
1537 } 1658 }
1538 else 1659 else
1539 return 0; 1660 return 0;
1540} 1661}
1541 1662
1542static int 1663static 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) 1664api_trace (pTHX_ SV *coro_sv, int flags)
1559{ 1665{
1560 dTHX;
1561 struct coro *coro = SvSTATE (coro_sv); 1666 struct coro *coro = SvSTATE (coro_sv);
1562 1667
1563 if (flags & CC_TRACE) 1668 if (flags & CC_TRACE)
1564 { 1669 {
1565 if (!coro->cctx) 1670 if (!coro->cctx)
1566 coro->cctx = cctx_new (); 1671 coro->cctx = cctx_new_run ();
1567 else if (!(coro->cctx->flags & CC_TRACE)) 1672 else if (!(coro->cctx->flags & CC_TRACE))
1568 croak ("cannot enable tracing on coroutine with custom stack"); 1673 croak ("cannot enable tracing on coroutine with custom stack,");
1569 1674
1570 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1675 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1571 } 1676 }
1572 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1677 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1573 { 1678 {
… …
1578 else 1683 else
1579 coro->slot->runops = RUNOPS_DEFAULT; 1684 coro->slot->runops = RUNOPS_DEFAULT;
1580 } 1685 }
1581} 1686}
1582 1687
1688/*****************************************************************************/
1689/* schedule-like-function opcode (SLF) */
1690
1691static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1692static const CV *slf_cv;
1693static SV **slf_argv;
1694static int slf_argc, slf_arga; /* count, allocated */
1695static I32 slf_ax; /* top of stack, for restore */
1696
1697/* this restores the stack in the case we patched the entersub, to */
1698/* recreate the stack frame as perl will on following calls */
1699/* since entersub cleared the stack */
1700static OP *
1701pp_restore (pTHX)
1702{
1703 int i;
1704 SV **SP = PL_stack_base + slf_ax;
1705
1706 PUSHMARK (SP);
1707
1708 EXTEND (SP, slf_argc + 1);
1709
1710 for (i = 0; i < slf_argc; ++i)
1711 PUSHs (sv_2mortal (slf_argv [i]));
1712
1713 PUSHs ((SV *)CvGV (slf_cv));
1714
1715 RETURNOP (slf_restore.op_first);
1716}
1717
1718static void
1719slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1720{
1721 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1722}
1723
1724static void
1725slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1726{
1727 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1728
1729 frame->prepare = slf_prepare_set_stacklevel;
1730 frame->check = slf_check_nop;
1731 frame->data = (void *)SvIV (arg [0]);
1732}
1733
1734static void
1735slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1736{
1737 SV **arg = (SV **)slf_frame.data;
1738
1739 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1740}
1741
1742static void
1743slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1744{
1745 if (items != 2)
1746 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1747
1748 frame->prepare = slf_prepare_transfer;
1749 frame->check = slf_check_nop;
1750 frame->data = (void *)arg; /* let's hope it will stay valid */
1751}
1752
1753static void
1754slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1755{
1756 frame->prepare = prepare_schedule;
1757 frame->check = slf_check_nop;
1758}
1759
1760static void
1761slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1762{
1763 frame->prepare = prepare_cede;
1764 frame->check = slf_check_nop;
1765}
1766
1767static void
1768slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1769{
1770 frame->prepare = prepare_cede_notself;
1771 frame->check = slf_check_nop;
1772}
1773
1774/* we hijack an hopefully unused CV flag for our purposes */
1775#define CVf_SLF 0x4000
1776
1777/*
1778 * these not obviously related functions are all rolled into one
1779 * function to increase chances that they all will call transfer with the same
1780 * stack offset
1781 * SLF stands for "schedule-like-function".
1782 */
1783static OP *
1784pp_slf (pTHX)
1785{
1786 I32 checkmark; /* mark SP to see how many elements check has pushed */
1787
1788 /* set up the slf frame, unless it has already been set-up */
1789 /* the latter happens when a new coro has been started */
1790 /* or when a new cctx was attached to an existing coroutine */
1791 if (expect_true (!slf_frame.prepare))
1792 {
1793 /* first iteration */
1794 dSP;
1795 SV **arg = PL_stack_base + TOPMARK + 1;
1796 int items = SP - arg; /* args without function object */
1797 SV *gv = *sp;
1798
1799 /* do a quick consistency check on the "function" object, and if it isn't */
1800 /* for us, divert to the real entersub */
1801 if (SvTYPE (gv) != SVt_PVGV
1802 || !GvCV (gv)
1803 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1804 return PL_ppaddr[OP_ENTERSUB](aTHX);
1805
1806 if (!(PL_op->op_flags & OPf_STACKED))
1807 {
1808 /* ampersand-form of call, use @_ instead of stack */
1809 AV *av = GvAV (PL_defgv);
1810 arg = AvARRAY (av);
1811 items = AvFILLp (av) + 1;
1812 }
1813
1814 /* now call the init function, which needs to set up slf_frame */
1815 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1816 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1817
1818 /* pop args */
1819 SP = PL_stack_base + POPMARK;
1820
1821 PUTBACK;
1822 }
1823
1824 /* now that we have a slf_frame, interpret it! */
1825 /* we use a callback system not to make the code needlessly */
1826 /* complicated, but so we can run multiple perl coros from one cctx */
1827
1828 do
1829 {
1830 struct coro_transfer_args ta;
1831
1832 slf_frame.prepare (aTHX_ &ta);
1833 TRANSFER (ta, 0);
1834
1835 checkmark = PL_stack_sp - PL_stack_base;
1836 }
1837 while (slf_frame.check (aTHX_ &slf_frame));
1838
1839 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1840
1841 /* return value handling - mostly like entersub */
1842 {
1843 dSP;
1844 SV **bot = PL_stack_base + checkmark;
1845 int gimme = GIMME_V;
1846
1847 /* make sure we put something on the stack in scalar context */
1848 if (gimme == G_SCALAR)
1849 {
1850 if (sp == bot)
1851 XPUSHs (&PL_sv_undef);
1852
1853 SP = bot + 1;
1854 }
1855
1856 PUTBACK;
1857 }
1858
1859 /* exception handling */
1860 if (expect_false (coro_throw))
1861 {
1862 SV *exception = sv_2mortal (coro_throw);
1863
1864 coro_throw = 0;
1865 sv_setsv (ERRSV, exception);
1866 croak (0);
1867 }
1868
1869 return NORMAL;
1870}
1871
1872static void
1873api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1874{
1875 int i;
1876 SV **arg = PL_stack_base + ax;
1877 int items = PL_stack_sp - arg + 1;
1878
1879 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1880
1881 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1882 && PL_op->op_ppaddr != pp_slf)
1883 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1884
1885 CvFLAGS (cv) |= CVf_SLF;
1886 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1887 slf_cv = cv;
1888
1889 /* we patch the op, and then re-run the whole call */
1890 /* we have to put the same argument on the stack for this to work */
1891 /* and this will be done by pp_restore */
1892 slf_restore.op_next = (OP *)&slf_restore;
1893 slf_restore.op_type = OP_CUSTOM;
1894 slf_restore.op_ppaddr = pp_restore;
1895 slf_restore.op_first = PL_op;
1896
1897 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1898
1899 if (PL_op->op_flags & OPf_STACKED)
1900 {
1901 if (items > slf_arga)
1902 {
1903 slf_arga = items;
1904 free (slf_argv);
1905 slf_argv = malloc (slf_arga * sizeof (SV *));
1906 }
1907
1908 slf_argc = items;
1909
1910 for (i = 0; i < items; ++i)
1911 slf_argv [i] = SvREFCNT_inc (arg [i]);
1912 }
1913 else
1914 slf_argc = 0;
1915
1916 PL_op->op_ppaddr = pp_slf;
1917 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1918
1919 PL_op = (OP *)&slf_restore;
1920}
1921
1922/*****************************************************************************/
1923/* PerlIO::cede */
1924
1925typedef struct
1926{
1927 PerlIOBuf base;
1928 NV next, every;
1929} PerlIOCede;
1930
1931static IV
1932PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1933{
1934 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1935
1936 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1937 self->next = nvtime () + self->every;
1938
1939 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1940}
1941
1942static SV *
1943PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1944{
1945 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1946
1947 return newSVnv (self->every);
1948}
1949
1950static IV
1951PerlIOCede_flush (pTHX_ PerlIO *f)
1952{
1953 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1954 double now = nvtime ();
1955
1956 if (now >= self->next)
1957 {
1958 api_cede (aTHX);
1959 self->next = now + self->every;
1960 }
1961
1962 return PerlIOBuf_flush (aTHX_ f);
1963}
1964
1965static PerlIO_funcs PerlIO_cede =
1966{
1967 sizeof(PerlIO_funcs),
1968 "cede",
1969 sizeof(PerlIOCede),
1970 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1971 PerlIOCede_pushed,
1972 PerlIOBuf_popped,
1973 PerlIOBuf_open,
1974 PerlIOBase_binmode,
1975 PerlIOCede_getarg,
1976 PerlIOBase_fileno,
1977 PerlIOBuf_dup,
1978 PerlIOBuf_read,
1979 PerlIOBuf_unread,
1980 PerlIOBuf_write,
1981 PerlIOBuf_seek,
1982 PerlIOBuf_tell,
1983 PerlIOBuf_close,
1984 PerlIOCede_flush,
1985 PerlIOBuf_fill,
1986 PerlIOBase_eof,
1987 PerlIOBase_error,
1988 PerlIOBase_clearerr,
1989 PerlIOBase_setlinebuf,
1990 PerlIOBuf_get_base,
1991 PerlIOBuf_bufsiz,
1992 PerlIOBuf_get_ptr,
1993 PerlIOBuf_get_cnt,
1994 PerlIOBuf_set_ptrcnt,
1995};
1996
1997/*****************************************************************************/
1998/* Coro::Semaphore */
1999
2000static void
2001coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2002{
2003 SV *count_sv = AvARRAY (av)[0];
2004 IV count = SvIVX (count_sv);
2005
2006 count += adjust;
2007 SvIVX (count_sv) = count;
2008
2009 /* now wake up as many waiters as are expected to lock */
2010 while (count > 0 && AvFILLp (av) > 0)
2011 {
2012 SV *cb;
2013
2014 /* swap first two elements so we can shift a waiter */
2015 AvARRAY (av)[0] = AvARRAY (av)[1];
2016 AvARRAY (av)[1] = count_sv;
2017 cb = av_shift (av);
2018
2019 if (SvOBJECT (cb))
2020 api_ready (aTHX_ cb);
2021 else
2022 croak ("callbacks not yet supported");
2023
2024 SvREFCNT_dec (cb);
2025
2026 --count;
2027 }
2028}
2029
2030static void
2031coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2032{
2033 /* call $sem->adjust (0) to possibly wake up some other waiters */
2034 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2035}
2036
2037static int
2038slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2039{
2040 AV *av = (AV *)frame->data;
2041 SV *count_sv = AvARRAY (av)[0];
2042
2043 if (SvIVX (count_sv) > 0)
2044 {
2045 SvSTATE_current->on_destroy = 0;
2046 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2047 return 0;
2048 }
2049 else
2050 {
2051 int i;
2052 /* if we were woken up but can't down, we look through the whole */
2053 /* waiters list and only add us if we aren't in there already */
2054 /* this avoids some degenerate memory usage cases */
2055
2056 for (i = 1; i <= AvFILLp (av); ++i)
2057 if (AvARRAY (av)[i] == SvRV (coro_current))
2058 return 1;
2059
2060 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2061 return 1;
2062 }
2063}
2064
2065static void
2066slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2067{
2068 AV *av = (AV *)SvRV (arg [0]);
2069
2070 if (SvIVX (AvARRAY (av)[0]) > 0)
2071 {
2072 frame->data = (void *)av;
2073 frame->prepare = prepare_nop;
2074 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2075 }
2076 else
2077 {
2078 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2079
2080 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2081 frame->prepare = prepare_schedule;
2082
2083 /* to avoid race conditions when a woken-up coro gets terminated */
2084 /* we arrange for a temporary on_destroy that calls adjust (0) */
2085 assert (!SvSTATE_current->on_destroy);//D
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2087 }
2088
2089 frame->check = slf_check_semaphore_down;
2090
2091}
2092
2093/*****************************************************************************/
2094/* gensub: simple closure generation utility */
2095
2096#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2097
2098/* create a closure from XS, returns a code reference */
2099/* the arg can be accessed via GENSUB_ARG from the callback */
2100/* the callback must use dXSARGS/XSRETURN */
2101static SV *
2102gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2103{
2104 CV *cv = (CV *)newSV (0);
2105
2106 sv_upgrade ((SV *)cv, SVt_PVCV);
2107
2108 CvANON_on (cv);
2109 CvISXSUB_on (cv);
2110 CvXSUB (cv) = xsub;
2111 GENSUB_ARG = arg;
2112
2113 return newRV_noinc ((SV *)cv);
2114}
2115
2116/*****************************************************************************/
2117/* Coro::AIO */
2118
2119#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2120
2121/* helper storage struct */
2122struct io_state
2123{
2124 int errorno;
2125 I32 laststype; /* U16 in 5.10.0 */
2126 int laststatval;
2127 Stat_t statcache;
2128};
2129
2130static void
2131coro_aio_callback (pTHX_ CV *cv)
2132{
2133 dXSARGS;
2134 AV *state = (AV *)GENSUB_ARG;
2135 SV *coro = av_pop (state);
2136 SV *data_sv = newSV (sizeof (struct io_state));
2137
2138 av_extend (state, items);
2139
2140 sv_upgrade (data_sv, SVt_PV);
2141 SvCUR_set (data_sv, sizeof (struct io_state));
2142 SvPOK_only (data_sv);
2143
2144 {
2145 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2146
2147 data->errorno = errno;
2148 data->laststype = PL_laststype;
2149 data->laststatval = PL_laststatval;
2150 data->statcache = PL_statcache;
2151 }
2152
2153 /* now build the result vector out of all the parameters and the data_sv */
2154 {
2155 int i;
2156
2157 for (i = 0; i < items; ++i)
2158 av_push (state, SvREFCNT_inc_NN (ST (i)));
2159 }
2160
2161 av_push (state, data_sv);
2162
2163 api_ready (aTHX_ coro);
2164 SvREFCNT_dec (coro);
2165 SvREFCNT_dec ((AV *)state);
2166}
2167
2168static int
2169slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2170{
2171 AV *state = (AV *)frame->data;
2172
2173 /* one element that is an RV? repeat! */
2174 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2175 return 1;
2176
2177 /* restore status */
2178 {
2179 SV *data_sv = av_pop (state);
2180 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2181
2182 errno = data->errorno;
2183 PL_laststype = data->laststype;
2184 PL_laststatval = data->laststatval;
2185 PL_statcache = data->statcache;
2186
2187 SvREFCNT_dec (data_sv);
2188 }
2189
2190 /* push result values */
2191 {
2192 dSP;
2193 int i;
2194
2195 EXTEND (SP, AvFILLp (state) + 1);
2196 for (i = 0; i <= AvFILLp (state); ++i)
2197 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2198
2199 PUTBACK;
2200 }
2201
2202 return 0;
2203}
2204
2205static void
2206slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2207{
2208 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2209 SV *coro_hv = SvRV (coro_current);
2210 struct coro *coro = SvSTATE_hv (coro_hv);
2211
2212 /* put our coroutine id on the state arg */
2213 av_push (state, SvREFCNT_inc_NN (coro_hv));
2214
2215 /* first see whether we have a non-zero priority and set it as AIO prio */
2216 if (coro->prio)
2217 {
2218 dSP;
2219
2220 static SV *prio_cv;
2221 static SV *prio_sv;
2222
2223 if (expect_false (!prio_cv))
2224 {
2225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2226 prio_sv = newSViv (0);
2227 }
2228
2229 PUSHMARK (SP);
2230 sv_setiv (prio_sv, coro->prio);
2231 XPUSHs (prio_sv);
2232
2233 PUTBACK;
2234 call_sv (prio_cv, G_VOID | G_DISCARD);
2235 }
2236
2237 /* now call the original request */
2238 {
2239 dSP;
2240 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2241 int i;
2242
2243 PUSHMARK (SP);
2244
2245 /* first push all args to the stack */
2246 EXTEND (SP, items + 1);
2247
2248 for (i = 0; i < items; ++i)
2249 PUSHs (arg [i]);
2250
2251 /* now push the callback closure */
2252 PUSHs (sv_2mortal (gensub (coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2253
2254 /* now call the AIO function - we assume our request is uncancelable */
2255 PUTBACK;
2256 call_sv ((SV *)req, G_VOID | G_DISCARD);
2257 }
2258
2259 /* now that the requets is going, we loop toll we have a result */
2260 frame->data = (void *)state;
2261 frame->prepare = prepare_schedule;
2262 frame->check = slf_check_aio_req;
2263}
2264
2265static void
2266coro_aio_req_xs (pTHX_ CV *cv)
2267{
2268 dVAR;
2269 dXSARGS;
2270
2271 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2272
2273 XSRETURN_EMPTY;
2274}
2275
2276/*****************************************************************************/
2277
1583MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2278MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1584 2279
1585PROTOTYPES: DISABLE 2280PROTOTYPES: DISABLE
1586 2281
1587BOOT: 2282BOOT:
1588{ 2283{
1589#ifdef USE_ITHREADS 2284#ifdef USE_ITHREADS
1590 MUTEX_INIT (&coro_mutex); 2285# if CORO_PTHREAD
2286 coro_thx = PERL_GET_CONTEXT;
2287# endif
1591#endif 2288#endif
1592 BOOT_PAGESIZE; 2289 BOOT_PAGESIZE;
1593 2290
1594 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2291 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1595 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2292 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1596 2293
1597 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2294 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; 2295 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; 2296 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 2297
1602 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2298 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1603 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2299 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)); 2300 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1605 2301
… …
1614 main_top_env = PL_top_env; 2310 main_top_env = PL_top_env;
1615 2311
1616 while (main_top_env->je_prev) 2312 while (main_top_env->je_prev)
1617 main_top_env = main_top_env->je_prev; 2313 main_top_env = main_top_env->je_prev;
1618 2314
2315 {
2316 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2317
2318 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2319 hv_store_ent (PL_custom_op_names, slf,
2320 newSVpv ("coro_slf", 0), 0);
2321
2322 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2323 hv_store_ent (PL_custom_op_descs, slf,
2324 newSVpv ("coro schedule like function", 0), 0);
2325 }
2326
1619 coroapi.ver = CORO_API_VERSION; 2327 coroapi.ver = CORO_API_VERSION;
1620 coroapi.rev = CORO_API_REVISION; 2328 coroapi.rev = CORO_API_REVISION;
2329
1621 coroapi.transfer = api_transfer; 2330 coroapi.transfer = api_transfer;
2331
2332 coroapi.sv_state = SvSTATE_;
2333 coroapi.execute_slf = api_execute_slf;
2334 coroapi.prepare_nop = prepare_nop;
2335 coroapi.prepare_schedule = prepare_schedule;
2336 coroapi.prepare_cede = prepare_cede;
2337 coroapi.prepare_cede_notself = prepare_cede_notself;
2338
2339 {
2340 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2341
2342 if (!svp) croak ("Time::HiRes is required");
2343 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2344
2345 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2346 }
1622 2347
1623 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2348 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1624} 2349}
1625 2350
1626SV * 2351SV *
… …
1650 av_push (coro->args, newSVsv (ST (i))); 2375 av_push (coro->args, newSVsv (ST (i)));
1651} 2376}
1652 OUTPUT: 2377 OUTPUT:
1653 RETVAL 2378 RETVAL
1654 2379
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 2380void
1659_set_stacklevel (...) 2381_set_stacklevel (...)
1660 ALIAS: 2382 CODE:
1661 Coro::State::transfer = 1 2383 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 2384
1669 PUTBACK; 2385void
1670 switch (ix) 2386transfer (...)
1671 { 2387 PROTOTYPE: $$
1672 case 0: 2388 CODE:
1673 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2389 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 2390
1707bool 2391bool
1708_destroy (SV *coro_sv) 2392_destroy (SV *coro_sv)
1709 CODE: 2393 CODE:
1710 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2394 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1717 CODE: 2401 CODE:
1718 _exit (code); 2402 _exit (code);
1719 2403
1720int 2404int
1721cctx_stacksize (int new_stacksize = 0) 2405cctx_stacksize (int new_stacksize = 0)
2406 PROTOTYPE: ;$
1722 CODE: 2407 CODE:
1723 RETVAL = coro_stacksize; 2408 RETVAL = cctx_stacksize;
1724 if (new_stacksize) 2409 if (new_stacksize)
2410 {
1725 coro_stacksize = new_stacksize; 2411 cctx_stacksize = new_stacksize;
2412 ++cctx_gen;
2413 }
1726 OUTPUT: 2414 OUTPUT:
1727 RETVAL 2415 RETVAL
1728 2416
1729int 2417int
2418cctx_max_idle (int max_idle = 0)
2419 PROTOTYPE: ;$
2420 CODE:
2421 RETVAL = cctx_max_idle;
2422 if (max_idle > 1)
2423 cctx_max_idle = max_idle;
2424 OUTPUT:
2425 RETVAL
2426
2427int
1730cctx_count () 2428cctx_count ()
2429 PROTOTYPE:
1731 CODE: 2430 CODE:
1732 RETVAL = cctx_count; 2431 RETVAL = cctx_count;
1733 OUTPUT: 2432 OUTPUT:
1734 RETVAL 2433 RETVAL
1735 2434
1736int 2435int
1737cctx_idle () 2436cctx_idle ()
2437 PROTOTYPE:
1738 CODE: 2438 CODE:
1739 RETVAL = cctx_idle; 2439 RETVAL = cctx_idle;
1740 OUTPUT: 2440 OUTPUT:
1741 RETVAL 2441 RETVAL
1742 2442
1743void 2443void
1744list () 2444list ()
2445 PROTOTYPE:
1745 PPCODE: 2446 PPCODE:
1746{ 2447{
1747 struct coro *coro; 2448 struct coro *coro;
1748 for (coro = coro_first; coro; coro = coro->next) 2449 for (coro = coro_first; coro; coro = coro->next)
1749 if (coro->hv) 2450 if (coro->hv)
… …
1754call (Coro::State coro, SV *coderef) 2455call (Coro::State coro, SV *coderef)
1755 ALIAS: 2456 ALIAS:
1756 eval = 1 2457 eval = 1
1757 CODE: 2458 CODE:
1758{ 2459{
1759 if (coro->mainstack) 2460 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1760 { 2461 {
1761 struct coro temp; 2462 struct coro temp;
1762 2463
1763 if (!(coro->flags & CF_RUNNING)) 2464 if (!(coro->flags & CF_RUNNING))
1764 { 2465 {
… …
1808 RETVAL = boolSV (coro->flags & ix); 2509 RETVAL = boolSV (coro->flags & ix);
1809 OUTPUT: 2510 OUTPUT:
1810 RETVAL 2511 RETVAL
1811 2512
1812void 2513void
2514throw (Coro::State self, SV *throw = &PL_sv_undef)
2515 PROTOTYPE: $;$
2516 CODE:
2517{
2518 struct coro *current = SvSTATE_current;
2519 SV **throwp = self == current ? &coro_throw : &self->throw;
2520 SvREFCNT_dec (*throwp);
2521 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2522}
2523
2524void
1813api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2525api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2526 PROTOTYPE: $;$
2527 C_ARGS: aTHX_ coro, flags
1814 2528
1815SV * 2529SV *
1816has_cctx (Coro::State coro) 2530has_cctx (Coro::State coro)
1817 PROTOTYPE: $ 2531 PROTOTYPE: $
1818 CODE: 2532 CODE:
… …
1826 CODE: 2540 CODE:
1827 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2541 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1828 OUTPUT: 2542 OUTPUT:
1829 RETVAL 2543 RETVAL
1830 2544
1831IV 2545UV
1832rss (Coro::State coro) 2546rss (Coro::State coro)
1833 PROTOTYPE: $ 2547 PROTOTYPE: $
1834 ALIAS: 2548 ALIAS:
1835 usecount = 1 2549 usecount = 1
1836 CODE: 2550 CODE:
… …
1842 OUTPUT: 2556 OUTPUT:
1843 RETVAL 2557 RETVAL
1844 2558
1845void 2559void
1846force_cctx () 2560force_cctx ()
2561 PROTOTYPE:
1847 CODE: 2562 CODE:
1848 struct coro *coro = SvSTATE (coro_current);
1849 coro->cctx->idle_sp = 0; 2563 SvSTATE_current->cctx->idle_sp = 0;
2564
2565void
2566swap_defsv (Coro::State self)
2567 PROTOTYPE: $
2568 ALIAS:
2569 swap_defav = 1
2570 CODE:
2571 if (!self->slot)
2572 croak ("cannot swap state with coroutine that has no saved state,");
2573 else
2574 {
2575 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2576 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2577
2578 SV *tmp = *src; *src = *dst; *dst = tmp;
2579 }
2580
1850 2581
1851MODULE = Coro::State PACKAGE = Coro 2582MODULE = Coro::State PACKAGE = Coro
1852 2583
1853BOOT: 2584BOOT:
1854{ 2585{
… …
1872 2603
1873 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2604 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1874 coro_ready[i] = newAV (); 2605 coro_ready[i] = newAV ();
1875 2606
1876 { 2607 {
1877 SV *sv = perl_get_sv ("Coro::API", TRUE); 2608 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1878 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1879 2609
1880 coroapi.schedule = api_schedule; 2610 coroapi.schedule = api_schedule;
1881 coroapi.cede = api_cede; 2611 coroapi.cede = api_cede;
1882 coroapi.cede_notself = api_cede_notself; 2612 coroapi.cede_notself = api_cede_notself;
1883 coroapi.ready = api_ready; 2613 coroapi.ready = api_ready;
1884 coroapi.is_ready = api_is_ready; 2614 coroapi.is_ready = api_is_ready;
1885 coroapi.nready = &coro_nready; 2615 coroapi.nready = coro_nready;
1886 coroapi.current = coro_current; 2616 coroapi.current = coro_current;
1887 2617
1888 GCoroAPI = &coroapi; 2618 GCoroAPI = &coroapi;
1889 sv_setiv (sv, (IV)&coroapi); 2619 sv_setiv (sv, (IV)&coroapi);
1890 SvREADONLY_on (sv); 2620 SvREADONLY_on (sv);
1891 } 2621 }
1892} 2622}
2623
2624void
2625schedule (...)
2626 CODE:
2627 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2628
2629void
2630cede (...)
2631 CODE:
2632 CORO_EXECUTE_SLF_XS (slf_init_cede);
2633
2634void
2635cede_notself (...)
2636 CODE:
2637 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1893 2638
1894void 2639void
1895_set_current (SV *current) 2640_set_current (SV *current)
1896 PROTOTYPE: $ 2641 PROTOTYPE: $
1897 CODE: 2642 CODE:
1898 SvREFCNT_dec (SvRV (coro_current)); 2643 SvREFCNT_dec (SvRV (coro_current));
1899 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2644 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1900 2645
1901void 2646void
1902_set_readyhook (SV *hook) 2647_set_readyhook (SV *hook)
1903 PROTOTYPE: $ 2648 PROTOTYPE: $
1904 CODE: 2649 CODE:
1905 LOCK;
1906 SvREFCNT_dec (coro_readyhook); 2650 SvREFCNT_dec (coro_readyhook);
1907 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2651 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1908 UNLOCK;
1909 2652
1910int 2653int
1911prio (Coro::State coro, int newprio = 0) 2654prio (Coro::State coro, int newprio = 0)
2655 PROTOTYPE: $;$
1912 ALIAS: 2656 ALIAS:
1913 nice = 1 2657 nice = 1
1914 CODE: 2658 CODE:
1915{ 2659{
1916 RETVAL = coro->prio; 2660 RETVAL = coro->prio;
… …
1931 2675
1932SV * 2676SV *
1933ready (SV *self) 2677ready (SV *self)
1934 PROTOTYPE: $ 2678 PROTOTYPE: $
1935 CODE: 2679 CODE:
1936 RETVAL = boolSV (api_ready (self)); 2680 RETVAL = boolSV (api_ready (aTHX_ self));
1937 OUTPUT: 2681 OUTPUT:
1938 RETVAL 2682 RETVAL
1939 2683
1940int 2684int
1941nready (...) 2685nready (...)
… …
1943 CODE: 2687 CODE:
1944 RETVAL = coro_nready; 2688 RETVAL = coro_nready;
1945 OUTPUT: 2689 OUTPUT:
1946 RETVAL 2690 RETVAL
1947 2691
1948void
1949throw (Coro::State self, SV *throw = &PL_sv_undef)
1950 PROTOTYPE: $;$
1951 CODE:
1952 SvREFCNT_dec (self->throw);
1953 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1954
1955void
1956swap_defsv (Coro::State self)
1957 PROTOTYPE: $
1958 ALIAS:
1959 swap_defav = 1
1960 CODE:
1961 if (!self->slot)
1962 croak ("cannot swap state with coroutine that has no saved state");
1963 else
1964 {
1965 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1966 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1967
1968 SV *tmp = *src; *src = *dst; *dst = tmp;
1969 }
1970
1971# for async_pool speedup 2692# for async_pool speedup
1972void 2693void
1973_pool_1 (SV *cb) 2694_pool_1 (SV *cb)
1974 CODE: 2695 CODE:
1975{ 2696{
1976 struct coro *coro = SvSTATE (coro_current);
1977 HV *hv = (HV *)SvRV (coro_current); 2697 HV *hv = (HV *)SvRV (coro_current);
2698 struct coro *coro = SvSTATE_hv ((SV *)hv);
1978 AV *defav = GvAV (PL_defgv); 2699 AV *defav = GvAV (PL_defgv);
1979 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2700 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1980 AV *invoke_av; 2701 AV *invoke_av;
1981 int i, len; 2702 int i, len;
1982 2703
1983 if (!invoke) 2704 if (!invoke)
1984 { 2705 {
1985 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2706 SV *old = PL_diehook;
2707 PL_diehook = 0;
2708 SvREFCNT_dec (old);
1986 croak ("\3async_pool terminate\2\n"); 2709 croak ("\3async_pool terminate\2\n");
1987 } 2710 }
1988 2711
1989 SvREFCNT_dec (coro->saved_deffh); 2712 SvREFCNT_dec (coro->saved_deffh);
1990 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2713 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1991 2714
1992 hv_store (hv, "desc", sizeof ("desc") - 1, 2715 hv_store (hv, "desc", sizeof ("desc") - 1,
1993 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2716 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1994 2717
1995 invoke_av = (AV *)SvRV (invoke); 2718 invoke_av = (AV *)SvRV (invoke);
… …
1999 2722
2000 if (len > 0) 2723 if (len > 0)
2001 { 2724 {
2002 av_fill (defav, len - 1); 2725 av_fill (defav, len - 1);
2003 for (i = 0; i < len; ++i) 2726 for (i = 0; i < len; ++i)
2004 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2727 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2005 } 2728 }
2006
2007 SvREFCNT_dec (invoke);
2008} 2729}
2009 2730
2010void 2731void
2011_pool_2 (SV *cb) 2732_pool_2 (SV *cb)
2012 CODE: 2733 CODE:
2013{ 2734{
2014 struct coro *coro = SvSTATE (coro_current); 2735 HV *hv = (HV *)SvRV (coro_current);
2736 struct coro *coro = SvSTATE_hv ((SV *)hv);
2015 2737
2016 sv_setsv (cb, &PL_sv_undef); 2738 sv_setsv (cb, &PL_sv_undef);
2017 2739
2018 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2740 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2019 coro->saved_deffh = 0; 2741 coro->saved_deffh = 0;
2020 2742
2021 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2743 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2022 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2744 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2023 { 2745 {
2024 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2746 SV *old = PL_diehook;
2747 PL_diehook = 0;
2748 SvREFCNT_dec (old);
2025 croak ("\3async_pool terminate\2\n"); 2749 croak ("\3async_pool terminate\2\n");
2026 } 2750 }
2027 2751
2028 av_clear (GvAV (PL_defgv)); 2752 av_clear (GvAV (PL_defgv));
2029 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2753 hv_store (hv, "desc", sizeof ("desc") - 1,
2030 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2754 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2031 2755
2032 coro->prio = 0; 2756 coro->prio = 0;
2033 2757
2034 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2758 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2035 api_trace (coro_current, 0); 2759 api_trace (aTHX_ coro_current, 0);
2036 2760
2037 av_push (av_async_pool, newSVsv (coro_current)); 2761 av_push (av_async_pool, newSVsv (coro_current));
2038} 2762}
2039 2763
2040 2764
2765MODULE = Coro::State PACKAGE = PerlIO::cede
2766
2767BOOT:
2768 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2769
2770
2041MODULE = Coro::State PACKAGE = Coro::AIO 2771MODULE = Coro::State PACKAGE = Coro::Semaphore
2042 2772
2043SV * 2773SV *
2044_get_state () 2774new (SV *klass, SV *count_ = 0)
2045 CODE: 2775 CODE:
2046{ 2776{
2047 struct io_state *data; 2777 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2048 2778 AV *av = newAV ();
2049 RETVAL = newSV (sizeof (struct io_state)); 2779 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2050 data = (struct io_state *)SvPVX (RETVAL); 2780 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2051 SvCUR_set (RETVAL, sizeof (struct io_state));
2052 SvPOK_only (RETVAL);
2053
2054 data->errorno = errno;
2055 data->laststype = PL_laststype;
2056 data->laststatval = PL_laststatval;
2057 data->statcache = PL_statcache;
2058} 2781}
2059 OUTPUT: 2782 OUTPUT:
2060 RETVAL 2783 RETVAL
2061 2784
2785SV *
2786count (SV *self)
2787 CODE:
2788 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2789 OUTPUT:
2790 RETVAL
2791
2062void 2792void
2063_set_state (char *data_) 2793up (SV *self, int adjust = 1)
2064 PROTOTYPE: $ 2794 ALIAS:
2795 adjust = 1
2796 CODE:
2797 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2798
2799void
2800down (SV *self)
2801 CODE:
2802 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2803
2804void
2805try (SV *self)
2806 PPCODE:
2807{
2808 AV *av = (AV *)SvRV (self);
2809 SV *count_sv = AvARRAY (av)[0];
2810 IV count = SvIVX (count_sv);
2811
2812 if (count > 0)
2813 {
2814 --count;
2815 SvIVX (count_sv) = count;
2816 XSRETURN_YES;
2817 }
2818 else
2819 XSRETURN_NO;
2820}
2821
2822void
2823waiters (SV *self)
2065 CODE: 2824 CODE:
2066{ 2825{
2067 struct io_state *data = (void *)data_; 2826 AV *av = (AV *)SvRV (self);
2068 2827
2069 errno = data->errorno; 2828 if (GIMME_V == G_SCALAR)
2070 PL_laststype = data->laststype; 2829 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2071 PL_laststatval = data->laststatval; 2830 else
2072 PL_statcache = data->statcache; 2831 {
2832 int i;
2833 EXTEND (SP, AvFILLp (av) + 1 - 1);
2834 for (i = 1; i <= AvFILLp (av); ++i)
2835 PUSHs (newSVsv (AvARRAY (av)[i]));
2836 }
2073} 2837}
2074 2838
2075 2839
2076MODULE = Coro::State PACKAGE = Coro::AnyEvent 2840MODULE = Coro::State PACKAGE = Coro::AnyEvent
2077 2841
2078BOOT: 2842BOOT:
2079 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2843 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2080 2844
2081SV * 2845void
2082_schedule () 2846_schedule (...)
2083 PROTOTYPE: @
2084 CODE: 2847 CODE:
2085{ 2848{
2086 static int incede; 2849 static int incede;
2087 2850
2088 api_cede_notself (); 2851 api_cede_notself (aTHX);
2089 2852
2090 ++incede; 2853 ++incede;
2091 while (coro_nready >= incede && api_cede ()) 2854 while (coro_nready >= incede && api_cede (aTHX))
2092 ; 2855 ;
2093 2856
2094 sv_setsv (sv_activity, &PL_sv_undef); 2857 sv_setsv (sv_activity, &PL_sv_undef);
2095 if (coro_nready >= incede) 2858 if (coro_nready >= incede)
2096 { 2859 {
… …
2101 } 2864 }
2102 2865
2103 --incede; 2866 --incede;
2104} 2867}
2105 2868
2869
2870MODULE = Coro::State PACKAGE = Coro::AIO
2871
2872void
2873_register (char *target, char *proto, SV *req)
2874 CODE:
2875{
2876 HV *st;
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 CV *slf_cv = newXSproto (target, coro_aio_req_xs, __FILE__, proto);
2880 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2881}
2882

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