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Comparing Coro/Coro/State.xs (file contents):
Revision 1.243 by root, Sat Aug 30 03:07:46 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
… …
772 809
773 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
774} 811}
775 812
776static void 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;
824}
825
826static void
777coro_setup (pTHX_ struct coro *coro) 827coro_setup (pTHX_ struct coro *coro)
778{ 828{
779 /* 829 /*
780 * emulate part of the perl startup here. 830 * emulate part of the perl startup here.
781 */ 831 */
… …
801 GvSV (PL_defgv) = newSV (0); 851 GvSV (PL_defgv) = newSV (0);
802 GvAV (PL_defgv) = coro->args; coro->args = 0; 852 GvAV (PL_defgv) = coro->args; coro->args = 0;
803 GvSV (PL_errgv) = newSV (0); 853 GvSV (PL_errgv) = newSV (0);
804 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);
805 PL_rs = newSVsv (GvSV (irsgv)); 855 PL_rs = newSVsv (GvSV (irsgv));
806 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
807 857
808 { 858 {
809 dSP; 859 dSP;
810 LOGOP myop; 860 UNOP myop;
811 861
812 Zero (&myop, 1, LOGOP); 862 Zero (&myop, 1, UNOP);
813 myop.op_next = Nullop; 863 myop.op_next = Nullop;
814 myop.op_flags = OPf_WANT_VOID; 864 myop.op_flags = OPf_WANT_VOID;
815 865
816 PUSHMARK (SP); 866 PUSHMARK (SP);
817 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
820 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
821 SPAGAIN; 871 SPAGAIN;
822 } 872 }
823 873
824 /* 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
825 * 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.
826 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
827 * so we ENTER here for symmetry
828 */ 876 */
829 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 */
830} 879}
831 880
832static void 881static void
833coro_destroy (pTHX_ struct coro *coro) 882coro_destruct (pTHX_ struct coro *coro)
834{ 883{
835 if (!IN_DESTRUCT) 884 if (!IN_DESTRUCT)
836 { 885 {
837 /* restore all saved variables and stuff */ 886 /* restore all saved variables and stuff */
838 LEAVE_SCOPE (0); 887 LEAVE_SCOPE (0);
… …
860 SvREFCNT_dec (PL_warnhook); 909 SvREFCNT_dec (PL_warnhook);
861 910
862 SvREFCNT_dec (coro->saved_deffh); 911 SvREFCNT_dec (coro->saved_deffh);
863 SvREFCNT_dec (coro->throw); 912 SvREFCNT_dec (coro->throw);
864 913
865 coro_destroy_stacks (aTHX); 914 coro_destruct_stacks (aTHX);
866} 915}
867 916
868static void 917INLINE void
869free_coro_mortal (pTHX) 918free_coro_mortal (pTHX)
870{ 919{
871 if (expect_true (coro_mortal)) 920 if (expect_true (coro_mortal))
872 { 921 {
873 SvREFCNT_dec (coro_mortal); 922 SvREFCNT_dec (coro_mortal);
… …
878static int 927static int
879runops_trace (pTHX) 928runops_trace (pTHX)
880{ 929{
881 COP *oldcop = 0; 930 COP *oldcop = 0;
882 int oldcxix = -2; 931 int oldcxix = -2;
883 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 */
884 coro_cctx *cctx = coro->cctx; 933 coro_cctx *cctx = coro->cctx;
885 934
886 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
887 { 936 {
888 PERL_ASYNC_CHECK (); 937 PERL_ASYNC_CHECK ();
… …
907 : cx->blk_gimme == G_SCALAR ? bot + 1 956 : cx->blk_gimme == G_SCALAR ? bot + 1
908 : bot; 957 : bot;
909 958
910 av_extend (av, top - bot); 959 av_extend (av, top - bot);
911 while (bot < top) 960 while (bot < top)
912 av_push (av, SvREFCNT_inc (*bot++)); 961 av_push (av, SvREFCNT_inc_NN (*bot++));
913 962
914 PL_runops = RUNOPS_DEFAULT; 963 PL_runops = RUNOPS_DEFAULT;
915 ENTER; 964 ENTER;
916 SAVETMPS; 965 SAVETMPS;
917 EXTEND (SP, 3); 966 EXTEND (SP, 3);
… …
997 1046
998 TAINT_NOT; 1047 TAINT_NOT;
999 return 0; 1048 return 0;
1000} 1049}
1001 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
1002/* 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 */
1003/* _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 */
1004/* during execution of a perl program */ 1060/* during execution of a perl program */
1061/* also initialises PL_top_env */
1005static void NOINLINE 1062static void NOINLINE
1006cctx_prepare (pTHX_ coro_cctx *cctx) 1063cctx_prepare (pTHX_ coro_cctx *cctx)
1007{ 1064{
1008 dSP; 1065 dSP;
1009 LOGOP myop; 1066 UNOP myop;
1010 1067
1011 PL_top_env = &PL_start_env; 1068 PL_top_env = &PL_start_env;
1012 1069
1013 if (cctx->flags & CC_TRACE) 1070 if (cctx->flags & CC_TRACE)
1014 PL_runops = runops_trace; 1071 PL_runops = runops_trace;
1015 1072
1016 Zero (&myop, 1, LOGOP); 1073 Zero (&myop, 1, UNOP);
1017 myop.op_next = PL_op; 1074 myop.op_next = PL_op;
1018 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
1019 1076
1020 PUSHMARK (SP); 1077 PUSHMARK (SP);
1021 EXTEND (SP, 2); 1078 EXTEND (SP, 2);
1022 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1079 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
1023 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1024 PUTBACK; 1081 PUTBACK;
1025 PL_op = (OP *)&myop; 1082 PL_op = (OP *)&myop;
1026 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1027 SPAGAIN; 1084 SPAGAIN;
1028} 1085}
1029 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
1030/* 1094/*
1031 * this is a _very_ stripped down perl interpreter ;) 1095 * this is a _very_ stripped down perl interpreter ;)
1032 */ 1096 */
1033static void 1097static void
1034cctx_run (void *arg) 1098cctx_run (void *arg)
1035{ 1099{
1100#ifdef USE_ITHREADS
1101# if CORO_PTHREAD
1102 PERL_SET_CONTEXT (coro_thx);
1103# endif
1104#endif
1105 {
1036 dTHX; 1106 dTHX;
1037 1107
1038 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1108 /* normally we would need to skip the entersub here */
1039 UNLOCK; 1109 /* not doing so will re-execute it, which is exactly what we want */
1040
1041 /* we now skip the entersub that lead to transfer() */
1042 PL_op = PL_op->op_next; 1110 /* PL_nop = PL_nop->op_next */
1043 1111
1044 /* inject a fake subroutine call to cctx_init */ 1112 /* inject a fake subroutine call to cctx_init */
1045 cctx_prepare (aTHX_ (coro_cctx *)arg); 1113 cctx_prepare (aTHX_ (coro_cctx *)arg);
1046 1114
1115 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX);
1117
1047 /* 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 */
1048 PL_restartop = PL_op; 1119 PL_restartop = PL_op;
1049 perl_run (PL_curinterp); 1120 perl_run (PL_curinterp);
1050 1121
1051 /* 1122 /*
1052 * 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
1053 * 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)
1054 * 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
1055 * bootstrap-time "top" top_env, as we cannot restore the "main" 1126 * bootstrap-time "top" top_env, as we cannot restore the "main"
1056 * coroutine as Coro has no such concept 1127 * coroutine as Coro has no such concept
1057 */ 1128 */
1058 PL_top_env = main_top_env; 1129 PL_top_env = main_top_env;
1059 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 }
1060} 1132}
1061 1133
1062static coro_cctx * 1134static coro_cctx *
1063cctx_new () 1135cctx_new ()
1064{ 1136{
1065 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 ();
1066 void *stack_start; 1166 void *stack_start;
1067 size_t stack_size; 1167 size_t stack_size;
1068 1168
1069 ++cctx_count;
1070
1071 Newz (0, cctx, 1, coro_cctx);
1072
1073#if HAVE_MMAP 1169#if HAVE_MMAP
1074 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;
1075 /* mmap supposedly does allocate-on-write for us */ 1171 /* mmap supposedly does allocate-on-write for us */
1076 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);
1077 1173
1078 if (cctx->sptr != (void *)-1) 1174 if (cctx->sptr != (void *)-1)
1079 { 1175 {
1080# if CORO_STACKGUARD 1176 #if CORO_STACKGUARD
1081 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1177 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1082# endif 1178 #endif
1083 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1179 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1084 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1180 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1085 cctx->flags |= CC_MAPPED; 1181 cctx->flags |= CC_MAPPED;
1086 } 1182 }
1087 else 1183 else
1088#endif 1184#endif
1089 { 1185 {
1090 cctx->ssize = coro_stacksize * (long)sizeof (long); 1186 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1091 New (0, cctx->sptr, coro_stacksize, long); 1187 New (0, cctx->sptr, cctx_stacksize, long);
1092 1188
1093 if (!cctx->sptr) 1189 if (!cctx->sptr)
1094 { 1190 {
1095 perror ("FATAL: unable to allocate stack for coroutine"); 1191 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1096 _exit (EXIT_FAILURE); 1192 _exit (EXIT_FAILURE);
1097 } 1193 }
1098 1194
1099 stack_start = cctx->sptr; 1195 stack_start = cctx->sptr;
1100 stack_size = cctx->ssize; 1196 stack_size = cctx->ssize;
1101 } 1197 }
1102 1198
1103 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
1104 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);
1105 1204
1106 return cctx; 1205 return cctx;
1107} 1206}
1108 1207
… …
1111{ 1210{
1112 if (!cctx) 1211 if (!cctx)
1113 return; 1212 return;
1114 1213
1115 --cctx_count; 1214 --cctx_count;
1215 coro_destroy (&cctx->cctx);
1116 1216
1217 /* coro_transfer creates new, empty cctx's */
1218 if (cctx->sptr)
1219 {
1117#if CORO_USE_VALGRIND 1220 #if CORO_USE_VALGRIND
1118 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1221 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1119#endif 1222 #endif
1120 1223
1121#if HAVE_MMAP 1224#if HAVE_MMAP
1122 if (cctx->flags & CC_MAPPED) 1225 if (cctx->flags & CC_MAPPED)
1123 munmap (cctx->sptr, cctx->ssize); 1226 munmap (cctx->sptr, cctx->ssize);
1124 else 1227 else
1125#endif 1228#endif
1126 Safefree (cctx->sptr); 1229 Safefree (cctx->sptr);
1230 }
1127 1231
1128 Safefree (cctx); 1232 Safefree (cctx);
1129} 1233}
1130 1234
1131/* wether this cctx should be destructed */ 1235/* wether this cctx should be destructed */
1132#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))
1133 1237
1134static coro_cctx * 1238static coro_cctx *
1135cctx_get (pTHX) 1239cctx_get (pTHX)
1136{ 1240{
1137 while (expect_true (cctx_first)) 1241 while (expect_true (cctx_first))
… …
1144 return cctx; 1248 return cctx;
1145 1249
1146 cctx_destroy (cctx); 1250 cctx_destroy (cctx);
1147 } 1251 }
1148 1252
1149 return cctx_new (); 1253 return cctx_new_run ();
1150} 1254}
1151 1255
1152static void 1256static void
1153cctx_put (coro_cctx *cctx) 1257cctx_put (coro_cctx *cctx)
1154{ 1258{
1259 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1260
1155 /* free another cctx if overlimit */ 1261 /* free another cctx if overlimit */
1156 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1262 if (expect_false (cctx_idle >= cctx_max_idle))
1157 { 1263 {
1158 coro_cctx *first = cctx_first; 1264 coro_cctx *first = cctx_first;
1159 cctx_first = first->next; 1265 cctx_first = first->next;
1160 --cctx_idle; 1266 --cctx_idle;
1161 1267
… …
1173transfer_check (pTHX_ struct coro *prev, struct coro *next) 1279transfer_check (pTHX_ struct coro *prev, struct coro *next)
1174{ 1280{
1175 if (expect_true (prev != next)) 1281 if (expect_true (prev != next))
1176 { 1282 {
1177 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1178 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,");
1179 1285
1180 if (expect_false (next->flags & CF_RUNNING)) 1286 if (expect_false (next->flags & CF_RUNNING))
1181 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,");
1182 1288
1183 if (expect_false (next->flags & CF_DESTROYED)) 1289 if (expect_false (next->flags & CF_DESTROYED))
1184 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,");
1185 1291
1186#if !PERL_VERSION_ATLEAST (5,10,0) 1292#if !PERL_VERSION_ATLEAST (5,10,0)
1187 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1293 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1188 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,");
1189#endif 1295#endif
1190 } 1296 }
1191} 1297}
1192 1298
1193/* always use the TRANSFER macro */ 1299/* always use the TRANSFER macro */
1194static void NOINLINE 1300static void NOINLINE
1195transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1196{ 1302{
1197 dSTACKLEVEL; 1303 dSTACKLEVEL;
1198 static volatile int has_throw;
1199 1304
1200 /* sometimes transfer is only called to set idle_sp */ 1305 /* sometimes transfer is only called to set idle_sp */
1201 if (expect_false (!next)) 1306 if (expect_false (!next))
1202 { 1307 {
1203 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1204 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 */
1205 } 1310 }
1206 else if (expect_true (prev != next)) 1311 else if (expect_true (prev != next))
1207 { 1312 {
1208 coro_cctx *prev__cctx; 1313 coro_cctx *prev__cctx;
1209 1314
1210 if (expect_false (prev->flags & CF_NEW)) 1315 if (expect_false (prev->flags & CF_NEW))
1211 { 1316 {
1212 /* create a new empty context */ 1317 /* create a new empty/source context */
1213 Newz (0, prev->cctx, 1, coro_cctx); 1318 prev->cctx = cctx_new_empty ();
1214 prev->flags &= ~CF_NEW; 1319 prev->flags &= ~CF_NEW;
1215 prev->flags |= CF_RUNNING; 1320 prev->flags |= CF_RUNNING;
1216 } 1321 }
1217 1322
1218 prev->flags &= ~CF_RUNNING; 1323 prev->flags &= ~CF_RUNNING;
1219 next->flags |= CF_RUNNING; 1324 next->flags |= CF_RUNNING;
1220
1221 LOCK;
1222 1325
1223 /* first get rid of the old state */ 1326 /* first get rid of the old state */
1224 save_perl (aTHX_ prev); 1327 save_perl (aTHX_ prev);
1225 1328
1226 if (expect_false (next->flags & CF_NEW)) 1329 if (expect_false (next->flags & CF_NEW))
… …
1233 else 1336 else
1234 load_perl (aTHX_ next); 1337 load_perl (aTHX_ next);
1235 1338
1236 prev__cctx = prev->cctx; 1339 prev__cctx = prev->cctx;
1237 1340
1238 /* possibly "free" the cctx */ 1341 /* possibly untie and reuse the cctx */
1239 if (expect_true ( 1342 if (expect_true (
1240 prev__cctx->idle_sp == STACKLEVEL 1343 prev__cctx->idle_sp == (void *)stacklevel
1241 && !(prev__cctx->flags & CC_TRACE) 1344 && !(prev__cctx->flags & CC_TRACE)
1242 && !force_cctx 1345 && !force_cctx
1243 )) 1346 ))
1244 { 1347 {
1245 /* 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 */
1246 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));
1247 1350
1248 prev->cctx = 0; 1351 prev->cctx = 0;
1249 1352
1250 /* 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 */
1251 /* 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 */
… …
1258 1361
1259 ++next->usecount; 1362 ++next->usecount;
1260 1363
1261 if (expect_true (!next->cctx)) 1364 if (expect_true (!next->cctx))
1262 next->cctx = cctx_get (aTHX); 1365 next->cctx = cctx_get (aTHX);
1263
1264 has_throw = !!next->throw;
1265 1366
1266 if (expect_false (prev__cctx != next->cctx)) 1367 if (expect_false (prev__cctx != next->cctx))
1267 { 1368 {
1268 prev__cctx->top_env = PL_top_env; 1369 prev__cctx->top_env = PL_top_env;
1269 PL_top_env = next->cctx->top_env; 1370 PL_top_env = next->cctx->top_env;
1270 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1271 } 1372 }
1272 1373
1273 free_coro_mortal (aTHX); 1374 transfer_tail (aTHX);
1274 UNLOCK;
1275
1276 if (expect_false (has_throw))
1277 {
1278 struct coro *coro = SvSTATE (coro_current);
1279
1280 if (coro->throw)
1281 {
1282 SV *exception = coro->throw;
1283 coro->throw = 0;
1284 sv_setsv (ERRSV, exception);
1285 croak (0);
1286 }
1287 }
1288 } 1375 }
1289} 1376}
1290
1291struct transfer_args
1292{
1293 struct coro *prev, *next;
1294};
1295 1377
1296#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))
1297#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1379#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1298 1380
1299/** high level stuff ********************************************************/ 1381/** high level stuff ********************************************************/
… …
1301static int 1383static int
1302coro_state_destroy (pTHX_ struct coro *coro) 1384coro_state_destroy (pTHX_ struct coro *coro)
1303{ 1385{
1304 if (coro->flags & CF_DESTROYED) 1386 if (coro->flags & CF_DESTROYED)
1305 return 0; 1387 return 0;
1388
1389 if (coro->on_destroy)
1390 coro->on_destroy (aTHX_ coro);
1306 1391
1307 coro->flags |= CF_DESTROYED; 1392 coro->flags |= CF_DESTROYED;
1308 1393
1309 if (coro->flags & CF_READY) 1394 if (coro->flags & CF_READY)
1310 { 1395 {
1311 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1396 /* reduce nready, as destroying a ready coro effectively unreadies it */
1312 /* alternative: look through all ready queues and remove the coro */ 1397 /* alternative: look through all ready queues and remove the coro */
1313 LOCK;
1314 --coro_nready; 1398 --coro_nready;
1315 UNLOCK;
1316 } 1399 }
1317 else 1400 else
1318 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 */
1319 1402
1320 if (coro->mainstack && coro->mainstack != main_mainstack) 1403 if (coro->mainstack && coro->mainstack != main_mainstack)
1321 { 1404 {
1322 struct coro temp; 1405 struct coro temp;
1323 1406
1324 if (coro->flags & CF_RUNNING) 1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1325 croak ("FATAL: tried to destroy currently running coroutine");
1326 1408
1327 save_perl (aTHX_ &temp); 1409 save_perl (aTHX_ &temp);
1328 load_perl (aTHX_ coro); 1410 load_perl (aTHX_ coro);
1329 1411
1330 coro_destroy (aTHX_ coro); 1412 coro_destruct (aTHX_ coro);
1331 1413
1332 load_perl (aTHX_ &temp); 1414 load_perl (aTHX_ &temp);
1333 1415
1334 coro->slot = 0; 1416 coro->slot = 0;
1335 } 1417 }
… …
1381# define MGf_DUP 0 1463# define MGf_DUP 0
1382#endif 1464#endif
1383}; 1465};
1384 1466
1385static void 1467static void
1386prepare_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)
1387{ 1469{
1388 ta->prev = SvSTATE (prev_sv); 1470 ta->prev = SvSTATE (prev_sv);
1389 ta->next = SvSTATE (next_sv); 1471 ta->next = SvSTATE (next_sv);
1390 TRANSFER_CHECK (*ta); 1472 TRANSFER_CHECK (*ta);
1391} 1473}
1392 1474
1393static void 1475static void
1394api_transfer (SV *prev_sv, SV *next_sv) 1476api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1395{ 1477{
1396 dTHX;
1397 struct transfer_args ta; 1478 struct coro_transfer_args ta;
1398 1479
1399 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1480 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1400 TRANSFER (ta, 1); 1481 TRANSFER (ta, 1);
1401} 1482}
1402 1483
1403/** Coro ********************************************************************/ 1484/** Coro ********************************************************************/
1404 1485
1405static void 1486INLINE void
1406coro_enq (pTHX_ SV *coro_sv) 1487coro_enq (pTHX_ struct coro *coro)
1407{ 1488{
1408 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));
1409} 1490}
1410 1491
1411static SV * 1492INLINE SV *
1412coro_deq (pTHX) 1493coro_deq (pTHX)
1413{ 1494{
1414 int prio; 1495 int prio;
1415 1496
1416 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1497 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1419 1500
1420 return 0; 1501 return 0;
1421} 1502}
1422 1503
1423static int 1504static int
1424api_ready (SV *coro_sv) 1505api_ready (pTHX_ SV *coro_sv)
1425{ 1506{
1426 dTHX;
1427 struct coro *coro; 1507 struct coro *coro;
1428 SV *sv_hook; 1508 SV *sv_hook;
1429 void (*xs_hook)(void); 1509 void (*xs_hook)(void);
1430 1510
1431 if (SvROK (coro_sv)) 1511 if (SvROK (coro_sv))
… …
1436 if (coro->flags & CF_READY) 1516 if (coro->flags & CF_READY)
1437 return 0; 1517 return 0;
1438 1518
1439 coro->flags |= CF_READY; 1519 coro->flags |= CF_READY;
1440 1520
1441 LOCK;
1442
1443 sv_hook = coro_nready ? 0 : coro_readyhook; 1521 sv_hook = coro_nready ? 0 : coro_readyhook;
1444 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1522 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1445 1523
1446 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1524 coro_enq (aTHX_ coro);
1447 ++coro_nready; 1525 ++coro_nready;
1448 1526
1449 UNLOCK;
1450
1451 if (sv_hook) 1527 if (sv_hook)
1452 { 1528 {
1453 dSP; 1529 dSP;
1454 1530
1455 ENTER; 1531 ENTER;
… …
1469 1545
1470 return 1; 1546 return 1;
1471} 1547}
1472 1548
1473static int 1549static int
1474api_is_ready (SV *coro_sv) 1550api_is_ready (pTHX_ SV *coro_sv)
1475{ 1551{
1476 dTHX;
1477 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1552 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1478} 1553}
1479 1554
1480static void 1555INLINE void
1481prepare_schedule (pTHX_ struct transfer_args *ta) 1556prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1482{ 1557{
1483 SV *prev_sv, *next_sv; 1558 SV *prev_sv, *next_sv;
1484 1559
1485 for (;;) 1560 for (;;)
1486 { 1561 {
1487 LOCK;
1488 next_sv = coro_deq (aTHX); 1562 next_sv = coro_deq (aTHX);
1489 1563
1490 /* nothing to schedule: call the idle handler */ 1564 /* nothing to schedule: call the idle handler */
1491 if (expect_false (!next_sv)) 1565 if (expect_false (!next_sv))
1492 { 1566 {
1493 dSP; 1567 dSP;
1494 UNLOCK;
1495 1568
1496 ENTER; 1569 ENTER;
1497 SAVETMPS; 1570 SAVETMPS;
1498 1571
1499 PUSHMARK (SP); 1572 PUSHMARK (SP);
… …
1504 FREETMPS; 1577 FREETMPS;
1505 LEAVE; 1578 LEAVE;
1506 continue; 1579 continue;
1507 } 1580 }
1508 1581
1509 ta->next = SvSTATE (next_sv); 1582 ta->next = SvSTATE_hv (next_sv);
1510 1583
1511 /* cannot transfer to destroyed coros, skip and look for next */ 1584 /* cannot transfer to destroyed coros, skip and look for next */
1512 if (expect_false (ta->next->flags & CF_DESTROYED)) 1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1513 { 1586 {
1514 UNLOCK;
1515 SvREFCNT_dec (next_sv); 1587 SvREFCNT_dec (next_sv);
1516 /* coro_nready is already taken care of by destroy */ 1588 /* coro_nready has already been taken care of by destroy */
1517 continue; 1589 continue;
1518 } 1590 }
1519 1591
1520 --coro_nready; 1592 --coro_nready;
1521 UNLOCK;
1522 break; 1593 break;
1523 } 1594 }
1524 1595
1525 /* free this only after the transfer */ 1596 /* free this only after the transfer */
1526 prev_sv = SvRV (coro_current); 1597 prev_sv = SvRV (coro_current);
1527 ta->prev = SvSTATE (prev_sv); 1598 ta->prev = SvSTATE_hv (prev_sv);
1528 TRANSFER_CHECK (*ta); 1599 TRANSFER_CHECK (*ta);
1529 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));
1530 ta->next->flags &= ~CF_READY; 1601 ta->next->flags &= ~CF_READY;
1531 SvRV_set (coro_current, next_sv); 1602 SvRV_set (coro_current, next_sv);
1532 1603
1533 LOCK;
1534 free_coro_mortal (aTHX); 1604 free_coro_mortal (aTHX);
1535 coro_mortal = prev_sv; 1605 coro_mortal = prev_sv;
1536 UNLOCK;
1537} 1606}
1538 1607
1539static void 1608INLINE void
1540prepare_cede (pTHX_ struct transfer_args *ta) 1609prepare_cede (pTHX_ struct coro_transfer_args *ta)
1541{ 1610{
1542 api_ready (coro_current); 1611 api_ready (aTHX_ coro_current);
1543 prepare_schedule (aTHX_ ta); 1612 prepare_schedule (aTHX_ ta);
1544} 1613}
1545 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
1546static int 1638static int
1547prepare_cede_notself (pTHX_ struct transfer_args *ta) 1639api_cede (pTHX)
1548{ 1640{
1549 if (coro_nready) 1641 struct coro_transfer_args ta;
1550 { 1642
1551 SV *prev = SvRV (coro_current);
1552 prepare_schedule (aTHX_ ta); 1643 prepare_cede (aTHX_ &ta);
1553 api_ready (prev); 1644
1645 if (expect_true (ta.prev != ta.next))
1646 {
1647 TRANSFER (ta, 1);
1554 return 1; 1648 return 1;
1555 } 1649 }
1556 else 1650 else
1557 return 0; 1651 return 0;
1558} 1652}
1559 1653
1560static void
1561api_schedule (void)
1562{
1563 dTHX;
1564 struct transfer_args ta;
1565
1566 prepare_schedule (aTHX_ &ta);
1567 TRANSFER (ta, 1);
1568}
1569
1570static int 1654static int
1571api_cede (void) 1655api_cede_notself (pTHX)
1572{ 1656{
1573 dTHX; 1657 if (coro_nready)
1658 {
1574 struct transfer_args ta; 1659 struct coro_transfer_args ta;
1575 1660
1576 prepare_cede (aTHX_ &ta); 1661 prepare_cede_notself (aTHX_ &ta);
1577
1578 if (expect_true (ta.prev != ta.next))
1579 {
1580 TRANSFER (ta, 1); 1662 TRANSFER (ta, 1);
1581 return 1; 1663 return 1;
1582 } 1664 }
1583 else 1665 else
1584 return 0; 1666 return 0;
1585} 1667}
1586 1668
1587static int 1669static void
1588api_cede_notself (void)
1589{
1590 dTHX;
1591 struct transfer_args ta;
1592
1593 if (prepare_cede_notself (aTHX_ &ta))
1594 {
1595 TRANSFER (ta, 1);
1596 return 1;
1597 }
1598 else
1599 return 0;
1600}
1601
1602static void
1603api_trace (SV *coro_sv, int flags) 1670api_trace (pTHX_ SV *coro_sv, int flags)
1604{ 1671{
1605 dTHX;
1606 struct coro *coro = SvSTATE (coro_sv); 1672 struct coro *coro = SvSTATE (coro_sv);
1607 1673
1608 if (flags & CC_TRACE) 1674 if (flags & CC_TRACE)
1609 { 1675 {
1610 if (!coro->cctx) 1676 if (!coro->cctx)
1611 coro->cctx = cctx_new (); 1677 coro->cctx = cctx_new_run ();
1612 else if (!(coro->cctx->flags & CC_TRACE)) 1678 else if (!(coro->cctx->flags & CC_TRACE))
1613 croak ("cannot enable tracing on coroutine with custom stack"); 1679 croak ("cannot enable tracing on coroutine with custom stack,");
1614 1680
1615 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1616 } 1682 }
1617 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1618 { 1684 {
… …
1623 else 1689 else
1624 coro->slot->runops = RUNOPS_DEFAULT; 1690 coro->slot->runops = RUNOPS_DEFAULT;
1625 } 1691 }
1626} 1692}
1627 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
1628static int 2041static int
1629coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
1630{ 2043{
1631 AV *padlist; 2044 AV *av = (AV *)frame->data;
1632 AV *av = (AV *)mg->mg_obj; 2045 SV *count_sv = AvARRAY (av)[0];
1633 2046
1634 abort (); 2047 if (SvIVX (count_sv) > 0)
1635 2048 {
2049 SvSTATE_current->on_destroy = 0;
2050 SvIVX (count_sv) = SvIVX (count_sv) - 1;
1636 return 0; 2051 return 0;
1637} 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 */
1638 2059
1639static MGVTBL coro_gensub_vtbl = { 2060 for (i = 1; i <= AvFILLp (av); ++i)
1640 0, 0, 0, 0, 2061 if (AvARRAY (av)[i] == SvRV (coro_current))
1641 coro_gensub_free 2062 return 1;
1642}; 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/*****************************************************************************/
1643 2120
1644MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1645 2122
1646PROTOTYPES: DISABLE 2123PROTOTYPES: DISABLE
1647 2124
1648BOOT: 2125BOOT:
1649{ 2126{
1650#ifdef USE_ITHREADS 2127#ifdef USE_ITHREADS
1651 MUTEX_INIT (&coro_mutex); 2128# if CORO_PTHREAD
2129 coro_thx = PERL_GET_CONTEXT;
2130# endif
1652#endif 2131#endif
1653 BOOT_PAGESIZE; 2132 BOOT_PAGESIZE;
1654 2133
1655 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2134 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1656 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2135 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1674 main_top_env = PL_top_env; 2153 main_top_env = PL_top_env;
1675 2154
1676 while (main_top_env->je_prev) 2155 while (main_top_env->je_prev)
1677 main_top_env = main_top_env->je_prev; 2156 main_top_env = main_top_env->je_prev;
1678 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
1679 coroapi.ver = CORO_API_VERSION; 2170 coroapi.ver = CORO_API_VERSION;
1680 coroapi.rev = CORO_API_REVISION; 2171 coroapi.rev = CORO_API_REVISION;
2172
1681 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 }
1682 2190
1683 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2191 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1684} 2192}
1685 2193
1686SV * 2194SV *
… …
1710 av_push (coro->args, newSVsv (ST (i))); 2218 av_push (coro->args, newSVsv (ST (i)));
1711} 2219}
1712 OUTPUT: 2220 OUTPUT:
1713 RETVAL 2221 RETVAL
1714 2222
1715# these not obviously related functions are all rolled into the same xs
1716# function to increase chances that they all will call transfer with the same
1717# stack offset
1718void 2223void
1719_set_stacklevel (...) 2224_set_stacklevel (...)
1720 ALIAS: 2225 CODE:
1721 Coro::State::transfer = 1 2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1722 Coro::schedule = 2
1723 Coro::cede = 3
1724 Coro::cede_notself = 4
1725 CODE:
1726{
1727 struct transfer_args ta;
1728 2227
1729 PUTBACK; 2228void
1730 switch (ix) 2229transfer (...)
1731 { 2230 PROTOTYPE: $$
1732 case 0: 2231 CODE:
1733 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2232 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1734 ta.next = 0;
1735 break;
1736
1737 case 1:
1738 if (items != 2)
1739 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1740
1741 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1742 break;
1743
1744 case 2:
1745 prepare_schedule (aTHX_ &ta);
1746 break;
1747
1748 case 3:
1749 prepare_cede (aTHX_ &ta);
1750 break;
1751
1752 case 4:
1753 if (!prepare_cede_notself (aTHX_ &ta))
1754 XSRETURN_EMPTY;
1755
1756 break;
1757 }
1758 SPAGAIN;
1759
1760 BARRIER;
1761 PUTBACK;
1762 TRANSFER (ta, 0);
1763 SPAGAIN; /* might be the sp of a different coroutine now */
1764 /* be extra careful not to ever do anything after TRANSFER */
1765}
1766 2233
1767bool 2234bool
1768_destroy (SV *coro_sv) 2235_destroy (SV *coro_sv)
1769 CODE: 2236 CODE:
1770 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2237 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1777 CODE: 2244 CODE:
1778 _exit (code); 2245 _exit (code);
1779 2246
1780int 2247int
1781cctx_stacksize (int new_stacksize = 0) 2248cctx_stacksize (int new_stacksize = 0)
2249 PROTOTYPE: ;$
1782 CODE: 2250 CODE:
1783 RETVAL = coro_stacksize; 2251 RETVAL = cctx_stacksize;
1784 if (new_stacksize) 2252 if (new_stacksize)
2253 {
1785 coro_stacksize = new_stacksize; 2254 cctx_stacksize = new_stacksize;
2255 ++cctx_gen;
2256 }
1786 OUTPUT: 2257 OUTPUT:
1787 RETVAL 2258 RETVAL
1788 2259
1789int 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
1790cctx_count () 2271cctx_count ()
2272 PROTOTYPE:
1791 CODE: 2273 CODE:
1792 RETVAL = cctx_count; 2274 RETVAL = cctx_count;
1793 OUTPUT: 2275 OUTPUT:
1794 RETVAL 2276 RETVAL
1795 2277
1796int 2278int
1797cctx_idle () 2279cctx_idle ()
2280 PROTOTYPE:
1798 CODE: 2281 CODE:
1799 RETVAL = cctx_idle; 2282 RETVAL = cctx_idle;
1800 OUTPUT: 2283 OUTPUT:
1801 RETVAL 2284 RETVAL
1802 2285
1803void 2286void
1804list () 2287list ()
2288 PROTOTYPE:
1805 PPCODE: 2289 PPCODE:
1806{ 2290{
1807 struct coro *coro; 2291 struct coro *coro;
1808 for (coro = coro_first; coro; coro = coro->next) 2292 for (coro = coro_first; coro; coro = coro->next)
1809 if (coro->hv) 2293 if (coro->hv)
… …
1814call (Coro::State coro, SV *coderef) 2298call (Coro::State coro, SV *coderef)
1815 ALIAS: 2299 ALIAS:
1816 eval = 1 2300 eval = 1
1817 CODE: 2301 CODE:
1818{ 2302{
1819 if (coro->mainstack) 2303 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1820 { 2304 {
1821 struct coro temp; 2305 struct coro temp;
1822 2306
1823 if (!(coro->flags & CF_RUNNING)) 2307 if (!(coro->flags & CF_RUNNING))
1824 { 2308 {
… …
1868 RETVAL = boolSV (coro->flags & ix); 2352 RETVAL = boolSV (coro->flags & ix);
1869 OUTPUT: 2353 OUTPUT:
1870 RETVAL 2354 RETVAL
1871 2355
1872void 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
1873api_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
1874 2367
1875SV * 2368SV *
1876has_cctx (Coro::State coro) 2369has_cctx (Coro::State coro)
1877 PROTOTYPE: $ 2370 PROTOTYPE: $
1878 CODE: 2371 CODE:
… …
1886 CODE: 2379 CODE:
1887 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2380 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1888 OUTPUT: 2381 OUTPUT:
1889 RETVAL 2382 RETVAL
1890 2383
1891IV 2384UV
1892rss (Coro::State coro) 2385rss (Coro::State coro)
1893 PROTOTYPE: $ 2386 PROTOTYPE: $
1894 ALIAS: 2387 ALIAS:
1895 usecount = 1 2388 usecount = 1
1896 CODE: 2389 CODE:
… …
1902 OUTPUT: 2395 OUTPUT:
1903 RETVAL 2396 RETVAL
1904 2397
1905void 2398void
1906force_cctx () 2399force_cctx ()
2400 PROTOTYPE:
1907 CODE: 2401 CODE:
1908 struct coro *coro = SvSTATE (coro_current);
1909 coro->cctx->idle_sp = 0; 2402 SvSTATE_current->cctx->idle_sp = 0;
1910
1911void
1912throw (Coro::State self, SV *throw = &PL_sv_undef)
1913 PROTOTYPE: $;$
1914 CODE:
1915 SvREFCNT_dec (self->throw);
1916 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1917 2403
1918void 2404void
1919swap_defsv (Coro::State self) 2405swap_defsv (Coro::State self)
1920 PROTOTYPE: $ 2406 PROTOTYPE: $
1921 ALIAS: 2407 ALIAS:
1922 swap_defav = 1 2408 swap_defav = 1
1923 CODE: 2409 CODE:
1924 if (!self->slot) 2410 if (!self->slot)
1925 croak ("cannot swap state with coroutine that has no saved state"); 2411 croak ("cannot swap state with coroutine that has no saved state,");
1926 else 2412 else
1927 { 2413 {
1928 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2414 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1929 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1930 2416
… …
1955 2441
1956 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2442 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1957 coro_ready[i] = newAV (); 2443 coro_ready[i] = newAV ();
1958 2444
1959 { 2445 {
1960 SV *sv = perl_get_sv ("Coro::API", TRUE); 2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1961 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1962 2447
1963 coroapi.schedule = api_schedule; 2448 coroapi.schedule = api_schedule;
1964 coroapi.cede = api_cede; 2449 coroapi.cede = api_cede;
1965 coroapi.cede_notself = api_cede_notself; 2450 coroapi.cede_notself = api_cede_notself;
1966 coroapi.ready = api_ready; 2451 coroapi.ready = api_ready;
1967 coroapi.is_ready = api_is_ready; 2452 coroapi.is_ready = api_is_ready;
1968 coroapi.nready = &coro_nready; 2453 coroapi.nready = coro_nready;
1969 coroapi.current = coro_current; 2454 coroapi.current = coro_current;
1970 2455
1971 GCoroAPI = &coroapi; 2456 GCoroAPI = &coroapi;
1972 sv_setiv (sv, (IV)&coroapi); 2457 sv_setiv (sv, (IV)&coroapi);
1973 SvREADONLY_on (sv); 2458 SvREADONLY_on (sv);
1974 } 2459 }
1975} 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);
1976 2476
1977void 2477void
1978_set_current (SV *current) 2478_set_current (SV *current)
1979 PROTOTYPE: $ 2479 PROTOTYPE: $
1980 CODE: 2480 CODE:
1981 SvREFCNT_dec (SvRV (coro_current)); 2481 SvREFCNT_dec (SvRV (coro_current));
1982 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2482 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1983 2483
1984void 2484void
1985_set_readyhook (SV *hook) 2485_set_readyhook (SV *hook)
1986 PROTOTYPE: $ 2486 PROTOTYPE: $
1987 CODE: 2487 CODE:
1988 LOCK;
1989 SvREFCNT_dec (coro_readyhook); 2488 SvREFCNT_dec (coro_readyhook);
1990 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2489 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1991 UNLOCK;
1992 2490
1993int 2491int
1994prio (Coro::State coro, int newprio = 0) 2492prio (Coro::State coro, int newprio = 0)
2493 PROTOTYPE: $;$
1995 ALIAS: 2494 ALIAS:
1996 nice = 1 2495 nice = 1
1997 CODE: 2496 CODE:
1998{ 2497{
1999 RETVAL = coro->prio; 2498 RETVAL = coro->prio;
… …
2014 2513
2015SV * 2514SV *
2016ready (SV *self) 2515ready (SV *self)
2017 PROTOTYPE: $ 2516 PROTOTYPE: $
2018 CODE: 2517 CODE:
2019 RETVAL = boolSV (api_ready (self)); 2518 RETVAL = boolSV (api_ready (aTHX_ self));
2020 OUTPUT: 2519 OUTPUT:
2021 RETVAL 2520 RETVAL
2022 2521
2023int 2522int
2024nready (...) 2523nready (...)
… …
2031# for async_pool speedup 2530# for async_pool speedup
2032void 2531void
2033_pool_1 (SV *cb) 2532_pool_1 (SV *cb)
2034 CODE: 2533 CODE:
2035{ 2534{
2036 struct coro *coro = SvSTATE (coro_current);
2037 HV *hv = (HV *)SvRV (coro_current); 2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv ((SV *)hv);
2038 AV *defav = GvAV (PL_defgv); 2537 AV *defav = GvAV (PL_defgv);
2039 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2040 AV *invoke_av; 2539 AV *invoke_av;
2041 int i, len; 2540 int i, len;
2042 2541
… …
2047 SvREFCNT_dec (old); 2546 SvREFCNT_dec (old);
2048 croak ("\3async_pool terminate\2\n"); 2547 croak ("\3async_pool terminate\2\n");
2049 } 2548 }
2050 2549
2051 SvREFCNT_dec (coro->saved_deffh); 2550 SvREFCNT_dec (coro->saved_deffh);
2052 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2551 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2053 2552
2054 hv_store (hv, "desc", sizeof ("desc") - 1, 2553 hv_store (hv, "desc", sizeof ("desc") - 1,
2055 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2554 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2056 2555
2057 invoke_av = (AV *)SvRV (invoke); 2556 invoke_av = (AV *)SvRV (invoke);
… …
2061 2560
2062 if (len > 0) 2561 if (len > 0)
2063 { 2562 {
2064 av_fill (defav, len - 1); 2563 av_fill (defav, len - 1);
2065 for (i = 0; i < len; ++i) 2564 for (i = 0; i < len; ++i)
2066 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2565 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2067 } 2566 }
2068
2069 SvREFCNT_dec (invoke);
2070} 2567}
2071 2568
2072void 2569void
2073_pool_2 (SV *cb) 2570_pool_2 (SV *cb)
2074 CODE: 2571 CODE:
2075{ 2572{
2076 struct coro *coro = SvSTATE (coro_current); 2573 struct coro *coro = SvSTATE_current;
2077 2574
2078 sv_setsv (cb, &PL_sv_undef); 2575 sv_setsv (cb, &PL_sv_undef);
2079 2576
2080 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2577 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2081 coro->saved_deffh = 0; 2578 coro->saved_deffh = 0;
2082 2579
2083 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2580 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2084 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2581 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2085 { 2582 {
2086 SV *old = PL_diehook; 2583 SV *old = PL_diehook;
2087 PL_diehook = 0; 2584 PL_diehook = 0;
2088 SvREFCNT_dec (old); 2585 SvREFCNT_dec (old);
… …
2094 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2591 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2095 2592
2096 coro->prio = 0; 2593 coro->prio = 0;
2097 2594
2098 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2595 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2099 api_trace (coro_current, 0); 2596 api_trace (aTHX_ coro_current, 0);
2100 2597
2101 av_push (av_async_pool, newSVsv (coro_current)); 2598 av_push (av_async_pool, newSVsv (coro_current));
2102} 2599}
2103 2600
2104#if 0 2601
2602MODULE = Coro::State PACKAGE = Coro::AIO
2105 2603
2106void 2604void
2107_generator_call (...) 2605_get_state (SV *self)
2108 PROTOTYPE: @ 2606 PROTOTYPE: $
2109 PPCODE: 2607 PPCODE:
2110 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2111 xxxx
2112 abort ();
2113
2114SV *
2115gensub (SV *sub, ...)
2116 PROTOTYPE: &;@
2117 CODE:
2118{ 2608{
2119 struct coro *coro; 2609 AV *defav = GvAV (PL_defgv);
2120 MAGIC *mg; 2610 AV *av = newAV ();
2121 CV *xcv;
2122 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2123 int i; 2611 int i;
2124
2125 CvGV (ncv) = CvGV (cv);
2126 CvFILE (ncv) = CvFILE (cv);
2127
2128 Newz (0, coro, 1, struct coro);
2129 coro->args = newAV ();
2130 coro->flags = CF_NEW;
2131
2132 av_extend (coro->args, items - 1);
2133 for (i = 1; i < items; i++)
2134 av_push (coro->args, newSVsv (ST (i)));
2135
2136 CvISXSUB_on (ncv);
2137 CvXSUBANY (ncv).any_ptr = (void *)coro;
2138
2139 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2140
2141 CvXSUB (ncv) = CvXSUB (xcv);
2142 CvANON_on (ncv);
2143
2144 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2145 RETVAL = newRV_noinc ((SV *)ncv);
2146}
2147 OUTPUT:
2148 RETVAL
2149
2150#endif
2151
2152
2153MODULE = Coro::State PACKAGE = Coro::AIO
2154
2155SV *
2156_get_state ()
2157 CODE:
2158{
2159 struct io_state *data;
2160
2161 RETVAL = newSV (sizeof (struct io_state)); 2612 SV *data_sv = newSV (sizeof (struct io_state));
2162 data = (struct io_state *)SvPVX (RETVAL); 2613 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2163 SvCUR_set (RETVAL, sizeof (struct io_state)); 2614 SvCUR_set (data_sv, sizeof (struct io_state));
2164 SvPOK_only (RETVAL); 2615 SvPOK_only (data_sv);
2165 2616
2166 data->errorno = errno; 2617 data->errorno = errno;
2167 data->laststype = PL_laststype; 2618 data->laststype = PL_laststype;
2168 data->laststatval = PL_laststatval; 2619 data->laststatval = PL_laststatval;
2169 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);
2170} 2632}
2171 OUTPUT:
2172 RETVAL
2173 2633
2174void 2634void
2175_set_state (char *data_) 2635_set_state (SV *state)
2176 PROTOTYPE: $ 2636 PROTOTYPE: $
2177 CODE: 2637 PPCODE:
2178{ 2638{
2179 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;
2180 2642
2181 errno = data->errorno; 2643 errno = data->errorno;
2182 PL_laststype = data->laststype; 2644 PL_laststype = data->laststype;
2183 PL_laststatval = data->laststatval; 2645 PL_laststatval = data->laststatval;
2184 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])));
2185} 2651}
2186 2652
2187 2653
2188MODULE = Coro::State PACKAGE = Coro::AnyEvent 2654MODULE = Coro::State PACKAGE = Coro::AnyEvent
2189 2655
2190BOOT: 2656BOOT:
2191 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2657 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2192 2658
2193SV * 2659void
2194_schedule (...) 2660_schedule (...)
2195 PROTOTYPE: @
2196 CODE: 2661 CODE:
2197{ 2662{
2198 static int incede; 2663 static int incede;
2199 2664
2200 api_cede_notself (); 2665 api_cede_notself (aTHX);
2201 2666
2202 ++incede; 2667 ++incede;
2203 while (coro_nready >= incede && api_cede ()) 2668 while (coro_nready >= incede && api_cede (aTHX))
2204 ; 2669 ;
2205 2670
2206 sv_setsv (sv_activity, &PL_sv_undef); 2671 sv_setsv (sv_activity, &PL_sv_undef);
2207 if (coro_nready >= incede) 2672 if (coro_nready >= incede)
2208 { 2673 {
… …
2213 } 2678 }
2214 2679
2215 --incede; 2680 --incede;
2216} 2681}
2217 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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