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Comparing Coro/Coro/State.xs (file contents):
Revision 1.250 by root, Wed Oct 22 16:34:07 2008 UTC vs.
Revision 1.311 by root, Thu Nov 20 01:12:08 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
58 55
59#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
81# ifndef IS_PADCONST 78# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
83# endif 80# endif
84#endif 81#endif
85 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
86/* 5.8.8 */ 93/* 5.8.8 */
87#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
88# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
89#endif 96#endif
90#ifndef newSV 97#ifndef newSV
91# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
92#endif 99#endif
93#ifndef SvREFCNT_inc_NN 100#ifndef CvISXSUB_on
94# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) 101# define CvISXSUB_on(cv) (void)cv
95#endif
96
97/* 5.11 */
98#ifndef CxHASARGS
99# define CxHASARGS(cx) (cx)->blk_sub.hasargs
100#endif 102#endif
101 103
102/* 5.8.7 */ 104/* 5.8.7 */
103#ifndef SvRV_set 105#ifndef SvRV_set
104# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
… …
117# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
118#endif 120#endif
119 121
120/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
121 * portable way as possible. */ 123 * portable way as possible. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
122#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
123#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
124 131
125#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
126 133
127#if __GNUC__ >= 3 134#if __GNUC__ >= 3
128# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
129# define BARRIER __asm__ __volatile__ ("" : : : "memory")
130# define expect(expr,value) __builtin_expect ((expr),(value)) 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
131#else 138#else
132# define attribute(x) 139# define attribute(x)
133# define BARRIER
134# define expect(expr,value) (expr) 140# define expect(expr,value) (expr)
141# define INLINE static
135#endif 142#endif
136 143
137#define expect_false(expr) expect ((expr) != 0, 0) 144#define expect_false(expr) expect ((expr) != 0, 0)
138#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
139 146
140#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
141 148
142#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
143 151
144#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
145static perl_mutex coro_mutex; 153# if CORO_PTHREAD
146# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 154static void *coro_thx;
147# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
148#else
149# define LOCK (void)0
150# define UNLOCK (void)0
151#endif 155# endif
152 156#endif
153/* helper storage struct for Coro::AIO */
154struct io_state
155{
156 AV *res;
157 int errorno;
158 I32 laststype;
159 int laststatval;
160 Stat_t statcache;
161};
162 157
163static double (*nvtime)(); /* so why doesn't it take void? */ 158static double (*nvtime)(); /* so why doesn't it take void? */
164 159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
163
164static U32 cctx_gen;
165static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 168static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 171
172static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 174static SV *rv_diehook;
175static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
196}; 196};
197 197
198/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
199typedef struct coro_cctx { 199typedef struct coro_cctx
200{
200 struct coro_cctx *next; 201 struct coro_cctx *next;
201 202
202 /* the stack */ 203 /* the stack */
203 void *sptr; 204 void *sptr;
204 size_t ssize; 205 size_t ssize;
… …
207 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
208 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 */
209 JMPENV *top_env; 210 JMPENV *top_env;
210 coro_context cctx; 211 coro_context cctx;
211 212
213 U32 gen;
212#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
213 int valgrind_id; 215 int valgrind_id;
214#endif 216#endif
215 unsigned char flags; 217 unsigned char flags;
216} coro_cctx; 218} coro_cctx;
… …
221 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
222 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
223}; 225};
224 226
225/* 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 */
226typedef struct { 228typedef struct
229{
227 SV *defsv; 230 SV *defsv;
228 AV *defav; 231 AV *defav;
229 SV *errsv; 232 SV *errsv;
230 SV *irsgv; 233 SV *irsgv;
231#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
235 238
236#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))
237 240
238/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
239struct coro { 242struct coro {
240 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx; 244 coro_cctx *cctx;
242 245
243 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
244 AV *mainstack; 248 AV *mainstack;
245 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
246 250
251 CV *startcv; /* the CV to execute */
247 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
248 int refcnt; /* coroutines are refcounted, yes */ 253 int refcnt; /* coroutines are refcounted, yes */
249 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
250 HV *hv; /* the perl hash associated with this coro, if any */ 255 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
251 257
252 /* statistics */ 258 /* statistics */
253 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
254 260
255 /* coro process data */ 261 /* coro process data */
256 int prio; 262 int prio;
257 SV *throw; /* exception to be thrown */ 263 SV *except; /* exception to be thrown */
264 SV *rouse_cb;
258 265
259 /* async_pool */ 266 /* async_pool */
260 SV *saved_deffh; 267 SV *saved_deffh;
261 268
262 /* linked list */ 269 /* linked list */
263 struct coro *next, *prev; 270 struct coro *next, *prev;
264}; 271};
265 272
266typedef struct coro *Coro__State; 273typedef struct coro *Coro__State;
267typedef struct coro *Coro__State_or_hashref; 274typedef struct coro *Coro__State_or_hashref;
275
276/* the following variables are effectively part of the perl context */
277/* and get copied between struct coro and these variables */
278/* the mainr easonw e don't support windows process emulation */
279static struct CoroSLF slf_frame; /* the current slf frame */
268 280
269/** Coro ********************************************************************/ 281/** Coro ********************************************************************/
270 282
271#define PRIO_MAX 3 283#define PRIO_MAX 3
272#define PRIO_HIGH 1 284#define PRIO_HIGH 1
… …
276#define PRIO_MIN -4 288#define PRIO_MIN -4
277 289
278/* for Coro.pm */ 290/* for Coro.pm */
279static SV *coro_current; 291static SV *coro_current;
280static SV *coro_readyhook; 292static SV *coro_readyhook;
281static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 293static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
282static int coro_nready; 294static CV *cv_coro_run;
283static struct coro *coro_first; 295static struct coro *coro_first;
296#define coro_nready coroapi.nready
284 297
285/** lowlevel stuff **********************************************************/ 298/** lowlevel stuff **********************************************************/
286 299
287static SV * 300static SV *
288coro_get_sv (pTHX_ const char *name, int create) 301coro_get_sv (pTHX_ const char *name, int create)
… …
310#if PERL_VERSION_ATLEAST (5,10,0) 323#if PERL_VERSION_ATLEAST (5,10,0)
311 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 324 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
312 get_hv (name, create); 325 get_hv (name, create);
313#endif 326#endif
314 return get_hv (name, create); 327 return get_hv (name, create);
328}
329
330/* may croak */
331INLINE CV *
332coro_sv_2cv (pTHX_ SV *sv)
333{
334 HV *st;
335 GV *gvp;
336 return sv_2cv (sv, &st, &gvp, 0);
315} 337}
316 338
317static AV * 339static AV *
318coro_clone_padlist (pTHX_ CV *cv) 340coro_clone_padlist (pTHX_ CV *cv)
319{ 341{
… …
373 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
374 396
375 return 0; 397 return 0;
376} 398}
377 399
378#define CORO_MAGIC_type_cv PERL_MAGIC_ext 400#define CORO_MAGIC_type_cv 26
379#define CORO_MAGIC_type_state PERL_MAGIC_ext 401#define CORO_MAGIC_type_state PERL_MAGIC_ext
380 402
381static MGVTBL coro_cv_vtbl = { 403static MGVTBL coro_cv_vtbl = {
382 0, 0, 0, 0, 404 0, 0, 0, 0,
383 coro_cv_free 405 coro_cv_free
384}; 406};
385 407
408#define CORO_MAGIC_NN(sv, type) \
409 (expect_true (SvMAGIC (sv)->mg_type == type) \
410 ? SvMAGIC (sv) \
411 : mg_find (sv, type))
412
386#define CORO_MAGIC(sv,type) \ 413#define CORO_MAGIC(sv, type) \
387 SvMAGIC (sv) \ 414 (expect_true (SvMAGIC (sv)) \
388 ? SvMAGIC (sv)->mg_type == type \ 415 ? CORO_MAGIC_NN (sv, type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type) \
391 : 0 416 : 0)
392 417
393#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 418#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
394#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 419#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
395 420
396static struct coro * 421INLINE struct coro *
397SvSTATE_ (pTHX_ SV *coro) 422SvSTATE_ (pTHX_ SV *coro)
398{ 423{
399 HV *stash; 424 HV *stash;
400 MAGIC *mg; 425 MAGIC *mg;
401 426
… …
416 mg = CORO_MAGIC_state (coro); 441 mg = CORO_MAGIC_state (coro);
417 return (struct coro *)mg->mg_ptr; 442 return (struct coro *)mg->mg_ptr;
418} 443}
419 444
420#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 445#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
446
447/* faster than SvSTATE, but expects a coroutine hv */
448#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
449#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
421 450
422/* the next two functions merely cache the padlists */ 451/* the next two functions merely cache the padlists */
423static void 452static void
424get_padlist (pTHX_ CV *cv) 453get_padlist (pTHX_ CV *cv)
425{ 454{
… …
431 else 460 else
432 { 461 {
433#if CORO_PREFER_PERL_FUNCTIONS 462#if CORO_PREFER_PERL_FUNCTIONS
434 /* this is probably cleaner? but also slower! */ 463 /* this is probably cleaner? but also slower! */
435 /* in practise, it seems to be less stable */ 464 /* in practise, it seems to be less stable */
436 CV *cp = Perl_cv_clone (cv); 465 CV *cp = Perl_cv_clone (aTHX_ cv);
437 CvPADLIST (cv) = CvPADLIST (cp); 466 CvPADLIST (cv) = CvPADLIST (cp);
438 CvPADLIST (cp) = 0; 467 CvPADLIST (cp) = 0;
439 SvREFCNT_dec (cp); 468 SvREFCNT_dec (cp);
440#else 469#else
441 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 470 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
492 CvPADLIST (cv) = (AV *)POPs; 521 CvPADLIST (cv) = (AV *)POPs;
493 } 522 }
494 523
495 PUTBACK; 524 PUTBACK;
496 } 525 }
526
527 slf_frame = c->slf_frame;
528 CORO_THROW = c->except;
497} 529}
498 530
499static void 531static void
500save_perl (pTHX_ Coro__State c) 532save_perl (pTHX_ Coro__State c)
501{ 533{
534 c->except = CORO_THROW;
535 c->slf_frame = slf_frame;
536
502 { 537 {
503 dSP; 538 dSP;
504 I32 cxix = cxstack_ix; 539 I32 cxix = cxstack_ix;
505 PERL_CONTEXT *ccstk = cxstack; 540 PERL_CONTEXT *ccstk = cxstack;
506 PERL_SI *top_si = PL_curstackinfo; 541 PERL_SI *top_si = PL_curstackinfo;
… …
573 #undef VAR 608 #undef VAR
574 } 609 }
575} 610}
576 611
577/* 612/*
578 * allocate various perl stacks. This is an exact copy 613 * allocate various perl stacks. This is almost an exact copy
579 * of perl.c:init_stacks, except that it uses less memory 614 * of perl.c:init_stacks, except that it uses less memory
580 * on the (sometimes correct) assumption that coroutines do 615 * on the (sometimes correct) assumption that coroutines do
581 * not usually need a lot of stackspace. 616 * not usually need a lot of stackspace.
582 */ 617 */
583#if CORO_PREFER_PERL_FUNCTIONS 618#if CORO_PREFER_PERL_FUNCTIONS
584# define coro_init_stacks init_stacks 619# define coro_init_stacks(thx) init_stacks ()
585#else 620#else
586static void 621static void
587coro_init_stacks (pTHX) 622coro_init_stacks (pTHX)
588{ 623{
589 PL_curstackinfo = new_stackinfo(32, 8); 624 PL_curstackinfo = new_stackinfo(32, 8);
… …
626 661
627/* 662/*
628 * destroy the stacks, the callchain etc... 663 * destroy the stacks, the callchain etc...
629 */ 664 */
630static void 665static void
631coro_destroy_stacks (pTHX) 666coro_destruct_stacks (pTHX)
632{ 667{
633 while (PL_curstackinfo->si_next) 668 while (PL_curstackinfo->si_next)
634 PL_curstackinfo = PL_curstackinfo->si_next; 669 PL_curstackinfo = PL_curstackinfo->si_next;
635 670
636 while (PL_curstackinfo) 671 while (PL_curstackinfo)
… …
785 820
786 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 821 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
787} 822}
788 823
789static void 824static void
825prepare_nop (pTHX_ struct coro_transfer_args *ta)
826{
827 /* kind of mega-hacky, but works */
828 ta->next = ta->prev = (struct coro *)ta;
829}
830
831static int
832slf_check_nop (pTHX_ struct CoroSLF *frame)
833{
834 return 0;
835}
836
837static UNOP coro_setup_op;
838
839static void NOINLINE /* noinline to keep it out of the transfer fast path */
790coro_setup (pTHX_ struct coro *coro) 840coro_setup (pTHX_ struct coro *coro)
791{ 841{
792 /* 842 /*
793 * emulate part of the perl startup here. 843 * emulate part of the perl startup here.
794 */ 844 */
… …
818 PL_rs = newSVsv (GvSV (irsgv)); 868 PL_rs = newSVsv (GvSV (irsgv));
819 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 869 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
820 870
821 { 871 {
822 dSP; 872 dSP;
823 LOGOP myop; 873 UNOP myop;
824 874
825 Zero (&myop, 1, LOGOP); 875 Zero (&myop, 1, UNOP);
826 myop.op_next = Nullop; 876 myop.op_next = Nullop;
877 myop.op_type = OP_ENTERSUB;
827 myop.op_flags = OPf_WANT_VOID; 878 myop.op_flags = OPf_WANT_VOID;
828 879
829 PUSHMARK (SP); 880 PUSHMARK (SP);
830 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 881 PUSHs ((SV *)coro->startcv);
831 PUTBACK; 882 PUTBACK;
832 PL_op = (OP *)&myop; 883 PL_op = (OP *)&myop;
833 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 884 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
834 SPAGAIN;
835 } 885 }
836 886
837 /* this newly created coroutine might be run on an existing cctx which most 887 /* this newly created coroutine might be run on an existing cctx which most
838 * likely was suspended in set_stacklevel, called from entersub. 888 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
839 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
840 * so we ENTER here for symmetry
841 */ 889 */
842 ENTER; 890 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
843} 891 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
844 892
893 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
894 coro_setup_op.op_next = PL_op;
895 coro_setup_op.op_type = OP_CUSTOM;
896 coro_setup_op.op_ppaddr = pp_slf;
897 /* no flags etc. required, as an init function won't be called */
898
899 PL_op = (OP *)&coro_setup_op;
900
901 /* copy throw, in case it was set before coro_setup */
902 CORO_THROW = coro->except;
903}
904
845static void 905static void
846coro_destroy (pTHX_ struct coro *coro) 906coro_destruct (pTHX_ struct coro *coro)
847{ 907{
848 if (!IN_DESTRUCT) 908 if (!IN_DESTRUCT)
849 { 909 {
850 /* restore all saved variables and stuff */ 910 /* restore all saved variables and stuff */
851 LEAVE_SCOPE (0); 911 LEAVE_SCOPE (0);
… …
871 931
872 SvREFCNT_dec (PL_diehook); 932 SvREFCNT_dec (PL_diehook);
873 SvREFCNT_dec (PL_warnhook); 933 SvREFCNT_dec (PL_warnhook);
874 934
875 SvREFCNT_dec (coro->saved_deffh); 935 SvREFCNT_dec (coro->saved_deffh);
876 SvREFCNT_dec (coro->throw); 936 SvREFCNT_dec (coro->rouse_cb);
877 937
878 coro_destroy_stacks (aTHX); 938 coro_destruct_stacks (aTHX);
879} 939}
880 940
881static void 941INLINE void
882free_coro_mortal (pTHX) 942free_coro_mortal (pTHX)
883{ 943{
884 if (expect_true (coro_mortal)) 944 if (expect_true (coro_mortal))
885 { 945 {
886 SvREFCNT_dec (coro_mortal); 946 SvREFCNT_dec (coro_mortal);
… …
891static int 951static int
892runops_trace (pTHX) 952runops_trace (pTHX)
893{ 953{
894 COP *oldcop = 0; 954 COP *oldcop = 0;
895 int oldcxix = -2; 955 int oldcxix = -2;
896 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 956 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
897 coro_cctx *cctx = coro->cctx; 957 coro_cctx *cctx = coro->cctx;
898 958
899 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 959 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
900 { 960 {
901 PERL_ASYNC_CHECK (); 961 PERL_ASYNC_CHECK ();
… …
968 SAVETMPS; 1028 SAVETMPS;
969 EXTEND (SP, 3); 1029 EXTEND (SP, 3);
970 PUSHMARK (SP); 1030 PUSHMARK (SP);
971 PUSHs (&PL_sv_yes); 1031 PUSHs (&PL_sv_yes);
972 PUSHs (fullname); 1032 PUSHs (fullname);
973 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1033 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
974 PUTBACK; 1034 PUTBACK;
975 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1035 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
976 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1036 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
977 SPAGAIN; 1037 SPAGAIN;
978 FREETMPS; 1038 FREETMPS;
… …
1010 1070
1011 TAINT_NOT; 1071 TAINT_NOT;
1012 return 0; 1072 return 0;
1013} 1073}
1014 1074
1015/* inject a fake call to Coro::State::_cctx_init into the execution */ 1075static struct coro_cctx *cctx_ssl_cctx;
1016/* _cctx_init should be careful, as it could be called at almost any time */ 1076static struct CoroSLF cctx_ssl_frame;
1017/* during execution of a perl program */ 1077
1078static void
1079slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1080{
1081 ta->prev = (struct coro *)cctx_ssl_cctx;
1082 ta->next = 0;
1083}
1084
1085static int
1086slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1087{
1088 *frame = cctx_ssl_frame;
1089
1090 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1091}
1092
1093/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1018static void NOINLINE 1094static void NOINLINE
1019cctx_prepare (pTHX_ coro_cctx *cctx) 1095cctx_prepare (pTHX_ coro_cctx *cctx)
1020{ 1096{
1021 dSP;
1022 LOGOP myop;
1023
1024 PL_top_env = &PL_start_env; 1097 PL_top_env = &PL_start_env;
1025 1098
1026 if (cctx->flags & CC_TRACE) 1099 if (cctx->flags & CC_TRACE)
1027 PL_runops = runops_trace; 1100 PL_runops = runops_trace;
1028 1101
1029 Zero (&myop, 1, LOGOP); 1102 /* we already must be executing an SLF op, there is no other valid way
1030 myop.op_next = PL_op; 1103 * that can lead to creation of a new cctx */
1031 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1104 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1105 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1032 1106
1033 PUSHMARK (SP); 1107 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1034 EXTEND (SP, 2); 1108 cctx_ssl_cctx = cctx;
1035 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1109 cctx_ssl_frame = slf_frame;
1036 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1110
1037 PUTBACK; 1111 slf_frame.prepare = slf_prepare_set_stacklevel;
1038 PL_op = (OP *)&myop; 1112 slf_frame.check = slf_check_set_stacklevel;
1039 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1113}
1040 SPAGAIN; 1114
1115/* the tail of transfer: execute stuff we can only do after a transfer */
1116INLINE void
1117transfer_tail (pTHX)
1118{
1119 free_coro_mortal (aTHX);
1041} 1120}
1042 1121
1043/* 1122/*
1044 * this is a _very_ stripped down perl interpreter ;) 1123 * this is a _very_ stripped down perl interpreter ;)
1045 */ 1124 */
1046static void 1125static void
1047cctx_run (void *arg) 1126cctx_run (void *arg)
1048{ 1127{
1128#ifdef USE_ITHREADS
1129# if CORO_PTHREAD
1130 PERL_SET_CONTEXT (coro_thx);
1131# endif
1132#endif
1133 {
1049 dTHX; 1134 dTHX;
1050 1135
1051 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1136 /* normally we would need to skip the entersub here */
1052 UNLOCK; 1137 /* not doing so will re-execute it, which is exactly what we want */
1053
1054 /* we now skip the entersub that lead to transfer() */
1055 PL_op = PL_op->op_next; 1138 /* PL_nop = PL_nop->op_next */
1056 1139
1057 /* inject a fake subroutine call to cctx_init */ 1140 /* inject a fake subroutine call to cctx_init */
1058 cctx_prepare (aTHX_ (coro_cctx *)arg); 1141 cctx_prepare (aTHX_ (coro_cctx *)arg);
1059 1142
1143 /* cctx_run is the alternative tail of transfer() */
1144 transfer_tail (aTHX);
1145
1060 /* somebody or something will hit me for both perl_run and PL_restartop */ 1146 /* somebody or something will hit me for both perl_run and PL_restartop */
1061 PL_restartop = PL_op; 1147 PL_restartop = PL_op;
1062 perl_run (PL_curinterp); 1148 perl_run (PL_curinterp);
1063
1064 /* 1149 /*
1150 * Unfortunately, there is no way to get at the return values of the
1151 * coro body here, as perl_run destroys these
1152 */
1153
1154 /*
1065 * If perl-run returns we assume exit() was being called or the coro 1155 * If perl-run returns we assume exit() was being called or the coro
1066 * fell off the end, which seems to be the only valid (non-bug) 1156 * fell off the end, which seems to be the only valid (non-bug)
1067 * reason for perl_run to return. We try to exit by jumping to the 1157 * reason for perl_run to return. We try to exit by jumping to the
1068 * bootstrap-time "top" top_env, as we cannot restore the "main" 1158 * bootstrap-time "top" top_env, as we cannot restore the "main"
1069 * coroutine as Coro has no such concept 1159 * coroutine as Coro has no such concept
1070 */ 1160 */
1071 PL_top_env = main_top_env; 1161 PL_top_env = main_top_env;
1072 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1162 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1163 }
1073} 1164}
1074 1165
1075static coro_cctx * 1166static coro_cctx *
1076cctx_new () 1167cctx_new ()
1077{ 1168{
1078 coro_cctx *cctx; 1169 coro_cctx *cctx;
1170
1171 ++cctx_count;
1172 New (0, cctx, 1, coro_cctx);
1173
1174 cctx->gen = cctx_gen;
1175 cctx->flags = 0;
1176 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1177
1178 return cctx;
1179}
1180
1181/* create a new cctx only suitable as source */
1182static coro_cctx *
1183cctx_new_empty ()
1184{
1185 coro_cctx *cctx = cctx_new ();
1186
1187 cctx->sptr = 0;
1188 coro_create (&cctx->cctx, 0, 0, 0, 0);
1189
1190 return cctx;
1191}
1192
1193/* create a new cctx suitable as destination/running a perl interpreter */
1194static coro_cctx *
1195cctx_new_run ()
1196{
1197 coro_cctx *cctx = cctx_new ();
1079 void *stack_start; 1198 void *stack_start;
1080 size_t stack_size; 1199 size_t stack_size;
1081 1200
1082 ++cctx_count;
1083
1084 Newz (0, cctx, 1, coro_cctx);
1085
1086#if HAVE_MMAP 1201#if HAVE_MMAP
1087 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1202 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1088 /* mmap supposedly does allocate-on-write for us */ 1203 /* mmap supposedly does allocate-on-write for us */
1089 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1204 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1090 1205
1091 if (cctx->sptr != (void *)-1) 1206 if (cctx->sptr != (void *)-1)
1092 { 1207 {
1093# if CORO_STACKGUARD 1208 #if CORO_STACKGUARD
1094 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1209 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1095# endif 1210 #endif
1096 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1211 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1097 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1212 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1098 cctx->flags |= CC_MAPPED; 1213 cctx->flags |= CC_MAPPED;
1099 } 1214 }
1100 else 1215 else
1101#endif 1216#endif
1102 { 1217 {
1103 cctx->ssize = coro_stacksize * (long)sizeof (long); 1218 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1104 New (0, cctx->sptr, coro_stacksize, long); 1219 New (0, cctx->sptr, cctx_stacksize, long);
1105 1220
1106 if (!cctx->sptr) 1221 if (!cctx->sptr)
1107 { 1222 {
1108 perror ("FATAL: unable to allocate stack for coroutine"); 1223 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1109 _exit (EXIT_FAILURE); 1224 _exit (EXIT_FAILURE);
1110 } 1225 }
1111 1226
1112 stack_start = cctx->sptr; 1227 stack_start = cctx->sptr;
1113 stack_size = cctx->ssize; 1228 stack_size = cctx->ssize;
1114 } 1229 }
1115 1230
1116 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1231 #if CORO_USE_VALGRIND
1232 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1233 #endif
1234
1117 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1235 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1118 1236
1119 return cctx; 1237 return cctx;
1120} 1238}
1121 1239
… …
1124{ 1242{
1125 if (!cctx) 1243 if (!cctx)
1126 return; 1244 return;
1127 1245
1128 --cctx_count; 1246 --cctx_count;
1247 coro_destroy (&cctx->cctx);
1129 1248
1249 /* coro_transfer creates new, empty cctx's */
1250 if (cctx->sptr)
1251 {
1130#if CORO_USE_VALGRIND 1252 #if CORO_USE_VALGRIND
1131 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1253 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1132#endif 1254 #endif
1133 1255
1134#if HAVE_MMAP 1256#if HAVE_MMAP
1135 if (cctx->flags & CC_MAPPED) 1257 if (cctx->flags & CC_MAPPED)
1136 munmap (cctx->sptr, cctx->ssize); 1258 munmap (cctx->sptr, cctx->ssize);
1137 else 1259 else
1138#endif 1260#endif
1139 Safefree (cctx->sptr); 1261 Safefree (cctx->sptr);
1262 }
1140 1263
1141 Safefree (cctx); 1264 Safefree (cctx);
1142} 1265}
1143 1266
1144/* wether this cctx should be destructed */ 1267/* wether this cctx should be destructed */
1145#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1268#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1146 1269
1147static coro_cctx * 1270static coro_cctx *
1148cctx_get (pTHX) 1271cctx_get (pTHX)
1149{ 1272{
1150 while (expect_true (cctx_first)) 1273 while (expect_true (cctx_first))
… …
1157 return cctx; 1280 return cctx;
1158 1281
1159 cctx_destroy (cctx); 1282 cctx_destroy (cctx);
1160 } 1283 }
1161 1284
1162 return cctx_new (); 1285 return cctx_new_run ();
1163} 1286}
1164 1287
1165static void 1288static void
1166cctx_put (coro_cctx *cctx) 1289cctx_put (coro_cctx *cctx)
1167{ 1290{
1291 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1292
1168 /* free another cctx if overlimit */ 1293 /* free another cctx if overlimit */
1169 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1294 if (expect_false (cctx_idle >= cctx_max_idle))
1170 { 1295 {
1171 coro_cctx *first = cctx_first; 1296 coro_cctx *first = cctx_first;
1172 cctx_first = first->next; 1297 cctx_first = first->next;
1173 --cctx_idle; 1298 --cctx_idle;
1174 1299
… …
1183/** coroutine switching *****************************************************/ 1308/** coroutine switching *****************************************************/
1184 1309
1185static void 1310static void
1186transfer_check (pTHX_ struct coro *prev, struct coro *next) 1311transfer_check (pTHX_ struct coro *prev, struct coro *next)
1187{ 1312{
1313 /* TODO: throwing up here is considered harmful */
1314
1188 if (expect_true (prev != next)) 1315 if (expect_true (prev != next))
1189 { 1316 {
1190 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1317 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1191 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1318 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1192 1319
1193 if (expect_false (next->flags & CF_RUNNING)) 1320 if (expect_false (next->flags & CF_RUNNING))
1194 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1321 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1195 1322
1196 if (expect_false (next->flags & CF_DESTROYED)) 1323 if (expect_false (next->flags & CF_DESTROYED))
1197 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1324 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1198 1325
1199#if !PERL_VERSION_ATLEAST (5,10,0) 1326#if !PERL_VERSION_ATLEAST (5,10,0)
1200 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1327 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1201 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1328 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1202#endif 1329#endif
1203 } 1330 }
1204} 1331}
1205 1332
1206/* always use the TRANSFER macro */ 1333/* always use the TRANSFER macro */
1207static void NOINLINE 1334static void NOINLINE /* noinline so we have a fixed stackframe */
1208transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1335transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1209{ 1336{
1210 dSTACKLEVEL; 1337 dSTACKLEVEL;
1211 static volatile int has_throw;
1212 1338
1213 /* sometimes transfer is only called to set idle_sp */ 1339 /* sometimes transfer is only called to set idle_sp */
1214 if (expect_false (!next)) 1340 if (expect_false (!next))
1215 { 1341 {
1216 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1342 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
… …
1220 { 1346 {
1221 coro_cctx *prev__cctx; 1347 coro_cctx *prev__cctx;
1222 1348
1223 if (expect_false (prev->flags & CF_NEW)) 1349 if (expect_false (prev->flags & CF_NEW))
1224 { 1350 {
1225 /* create a new empty context */ 1351 /* create a new empty/source context */
1226 Newz (0, prev->cctx, 1, coro_cctx); 1352 prev->cctx = cctx_new_empty ();
1227 prev->flags &= ~CF_NEW; 1353 prev->flags &= ~CF_NEW;
1228 prev->flags |= CF_RUNNING; 1354 prev->flags |= CF_RUNNING;
1229 } 1355 }
1230 1356
1231 prev->flags &= ~CF_RUNNING; 1357 prev->flags &= ~CF_RUNNING;
1232 next->flags |= CF_RUNNING; 1358 next->flags |= CF_RUNNING;
1233
1234 LOCK;
1235 1359
1236 /* first get rid of the old state */ 1360 /* first get rid of the old state */
1237 save_perl (aTHX_ prev); 1361 save_perl (aTHX_ prev);
1238 1362
1239 if (expect_false (next->flags & CF_NEW)) 1363 if (expect_false (next->flags & CF_NEW))
… …
1246 else 1370 else
1247 load_perl (aTHX_ next); 1371 load_perl (aTHX_ next);
1248 1372
1249 prev__cctx = prev->cctx; 1373 prev__cctx = prev->cctx;
1250 1374
1251 /* possibly "free" the cctx */ 1375 /* possibly untie and reuse the cctx */
1252 if (expect_true ( 1376 if (expect_true (
1253 prev__cctx->idle_sp == STACKLEVEL 1377 prev__cctx->idle_sp == STACKLEVEL
1254 && !(prev__cctx->flags & CC_TRACE) 1378 && !(prev__cctx->flags & CC_TRACE)
1255 && !force_cctx 1379 && !force_cctx
1256 )) 1380 ))
1257 { 1381 {
1258 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1382 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1259 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1383 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1260 1384
1261 prev->cctx = 0; 1385 prev->cctx = 0;
1262 1386
1263 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1387 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1264 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1388 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1271 1395
1272 ++next->usecount; 1396 ++next->usecount;
1273 1397
1274 if (expect_true (!next->cctx)) 1398 if (expect_true (!next->cctx))
1275 next->cctx = cctx_get (aTHX); 1399 next->cctx = cctx_get (aTHX);
1276
1277 has_throw = !!next->throw;
1278 1400
1279 if (expect_false (prev__cctx != next->cctx)) 1401 if (expect_false (prev__cctx != next->cctx))
1280 { 1402 {
1281 prev__cctx->top_env = PL_top_env; 1403 prev__cctx->top_env = PL_top_env;
1282 PL_top_env = next->cctx->top_env; 1404 PL_top_env = next->cctx->top_env;
1283 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1284 } 1406 }
1285 1407
1286 free_coro_mortal (aTHX); 1408 transfer_tail (aTHX);
1287 UNLOCK;
1288
1289 if (expect_false (has_throw))
1290 {
1291 struct coro *coro = SvSTATE (coro_current);
1292
1293 if (coro->throw)
1294 {
1295 SV *exception = coro->throw;
1296 coro->throw = 0;
1297 sv_setsv (ERRSV, exception);
1298 croak (0);
1299 }
1300 }
1301 } 1409 }
1302} 1410}
1303
1304struct transfer_args
1305{
1306 struct coro *prev, *next;
1307};
1308 1411
1309#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1412#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1310#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1413#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1311 1414
1312/** high level stuff ********************************************************/ 1415/** high level stuff ********************************************************/
… …
1314static int 1417static int
1315coro_state_destroy (pTHX_ struct coro *coro) 1418coro_state_destroy (pTHX_ struct coro *coro)
1316{ 1419{
1317 if (coro->flags & CF_DESTROYED) 1420 if (coro->flags & CF_DESTROYED)
1318 return 0; 1421 return 0;
1422
1423 if (coro->on_destroy)
1424 coro->on_destroy (aTHX_ coro);
1319 1425
1320 coro->flags |= CF_DESTROYED; 1426 coro->flags |= CF_DESTROYED;
1321 1427
1322 if (coro->flags & CF_READY) 1428 if (coro->flags & CF_READY)
1323 { 1429 {
1324 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1430 /* reduce nready, as destroying a ready coro effectively unreadies it */
1325 /* alternative: look through all ready queues and remove the coro */ 1431 /* alternative: look through all ready queues and remove the coro */
1326 LOCK;
1327 --coro_nready; 1432 --coro_nready;
1328 UNLOCK;
1329 } 1433 }
1330 else 1434 else
1331 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1435 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1332 1436
1333 if (coro->mainstack && coro->mainstack != main_mainstack) 1437 if (coro->mainstack && coro->mainstack != main_mainstack)
1334 { 1438 {
1335 struct coro temp; 1439 struct coro temp;
1336 1440
1337 if (coro->flags & CF_RUNNING) 1441 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1338 croak ("FATAL: tried to destroy currently running coroutine");
1339 1442
1340 save_perl (aTHX_ &temp); 1443 save_perl (aTHX_ &temp);
1341 load_perl (aTHX_ coro); 1444 load_perl (aTHX_ coro);
1342 1445
1343 coro_destroy (aTHX_ coro); 1446 coro_destruct (aTHX_ coro);
1344 1447
1345 load_perl (aTHX_ &temp); 1448 load_perl (aTHX_ &temp);
1346 1449
1347 coro->slot = 0; 1450 coro->slot = 0;
1348 } 1451 }
1349 1452
1350 cctx_destroy (coro->cctx); 1453 cctx_destroy (coro->cctx);
1454 SvREFCNT_dec (coro->startcv);
1351 SvREFCNT_dec (coro->args); 1455 SvREFCNT_dec (coro->args);
1456 SvREFCNT_dec (CORO_THROW);
1352 1457
1353 if (coro->next) coro->next->prev = coro->prev; 1458 if (coro->next) coro->next->prev = coro->prev;
1354 if (coro->prev) coro->prev->next = coro->next; 1459 if (coro->prev) coro->prev->next = coro->next;
1355 if (coro == coro_first) coro_first = coro->next; 1460 if (coro == coro_first) coro_first = coro->next;
1356 1461
… …
1394# define MGf_DUP 0 1499# define MGf_DUP 0
1395#endif 1500#endif
1396}; 1501};
1397 1502
1398static void 1503static void
1399prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1504prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1400{ 1505{
1401 ta->prev = SvSTATE (prev_sv); 1506 ta->prev = SvSTATE (prev_sv);
1402 ta->next = SvSTATE (next_sv); 1507 ta->next = SvSTATE (next_sv);
1403 TRANSFER_CHECK (*ta); 1508 TRANSFER_CHECK (*ta);
1404} 1509}
1405 1510
1406static void 1511static void
1407api_transfer (SV *prev_sv, SV *next_sv) 1512api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1408{ 1513{
1409 dTHX;
1410 struct transfer_args ta; 1514 struct coro_transfer_args ta;
1411 1515
1412 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1516 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1413 TRANSFER (ta, 1); 1517 TRANSFER (ta, 1);
1414} 1518}
1415 1519
1520/*****************************************************************************/
1521/* gensub: simple closure generation utility */
1522
1523#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1524
1525/* create a closure from XS, returns a code reference */
1526/* the arg can be accessed via GENSUB_ARG from the callback */
1527/* the callback must use dXSARGS/XSRETURN */
1528static SV *
1529gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1530{
1531 CV *cv = (CV *)newSV (0);
1532
1533 sv_upgrade ((SV *)cv, SVt_PVCV);
1534
1535 CvANON_on (cv);
1536 CvISXSUB_on (cv);
1537 CvXSUB (cv) = xsub;
1538 GENSUB_ARG = arg;
1539
1540 return newRV_noinc ((SV *)cv);
1541}
1542
1416/** Coro ********************************************************************/ 1543/** Coro ********************************************************************/
1417 1544
1418static void 1545INLINE void
1419coro_enq (pTHX_ SV *coro_sv) 1546coro_enq (pTHX_ struct coro *coro)
1420{ 1547{
1421 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1548 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1422} 1549}
1423 1550
1424static SV * 1551INLINE SV *
1425coro_deq (pTHX) 1552coro_deq (pTHX)
1426{ 1553{
1427 int prio; 1554 int prio;
1428 1555
1429 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1556 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1432 1559
1433 return 0; 1560 return 0;
1434} 1561}
1435 1562
1436static int 1563static int
1437api_ready (SV *coro_sv) 1564api_ready (pTHX_ SV *coro_sv)
1438{ 1565{
1439 dTHX;
1440 struct coro *coro; 1566 struct coro *coro;
1441 SV *sv_hook; 1567 SV *sv_hook;
1442 void (*xs_hook)(void); 1568 void (*xs_hook)(void);
1443 1569
1444 if (SvROK (coro_sv)) 1570 if (SvROK (coro_sv))
… …
1449 if (coro->flags & CF_READY) 1575 if (coro->flags & CF_READY)
1450 return 0; 1576 return 0;
1451 1577
1452 coro->flags |= CF_READY; 1578 coro->flags |= CF_READY;
1453 1579
1454 LOCK;
1455
1456 sv_hook = coro_nready ? 0 : coro_readyhook; 1580 sv_hook = coro_nready ? 0 : coro_readyhook;
1457 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1581 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1458 1582
1459 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1583 coro_enq (aTHX_ coro);
1460 ++coro_nready; 1584 ++coro_nready;
1461 1585
1462 UNLOCK;
1463
1464 if (sv_hook) 1586 if (sv_hook)
1465 { 1587 {
1466 dSP; 1588 dSP;
1467 1589
1468 ENTER; 1590 ENTER;
1469 SAVETMPS; 1591 SAVETMPS;
1470 1592
1471 PUSHMARK (SP); 1593 PUSHMARK (SP);
1472 PUTBACK; 1594 PUTBACK;
1473 call_sv (sv_hook, G_DISCARD); 1595 call_sv (sv_hook, G_VOID | G_DISCARD);
1474 SPAGAIN;
1475 1596
1476 FREETMPS; 1597 FREETMPS;
1477 LEAVE; 1598 LEAVE;
1478 } 1599 }
1479 1600
… …
1482 1603
1483 return 1; 1604 return 1;
1484} 1605}
1485 1606
1486static int 1607static int
1487api_is_ready (SV *coro_sv) 1608api_is_ready (pTHX_ SV *coro_sv)
1488{ 1609{
1489 dTHX;
1490 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1610 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1491} 1611}
1492 1612
1493static void 1613INLINE void
1494prepare_schedule (pTHX_ struct transfer_args *ta) 1614prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1495{ 1615{
1496 SV *prev_sv, *next_sv; 1616 SV *prev_sv, *next_sv;
1497 1617
1498 for (;;) 1618 for (;;)
1499 { 1619 {
1500 LOCK;
1501 next_sv = coro_deq (aTHX); 1620 next_sv = coro_deq (aTHX);
1502 1621
1503 /* nothing to schedule: call the idle handler */ 1622 /* nothing to schedule: call the idle handler */
1504 if (expect_false (!next_sv)) 1623 if (expect_false (!next_sv))
1505 { 1624 {
1506 dSP; 1625 dSP;
1507 UNLOCK;
1508 1626
1509 ENTER; 1627 ENTER;
1510 SAVETMPS; 1628 SAVETMPS;
1511 1629
1512 PUSHMARK (SP); 1630 PUSHMARK (SP);
1513 PUTBACK; 1631 PUTBACK;
1514 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1632 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1515 SPAGAIN;
1516 1633
1517 FREETMPS; 1634 FREETMPS;
1518 LEAVE; 1635 LEAVE;
1519 continue; 1636 continue;
1520 } 1637 }
1521 1638
1522 ta->next = SvSTATE (next_sv); 1639 ta->next = SvSTATE_hv (next_sv);
1523 1640
1524 /* cannot transfer to destroyed coros, skip and look for next */ 1641 /* cannot transfer to destroyed coros, skip and look for next */
1525 if (expect_false (ta->next->flags & CF_DESTROYED)) 1642 if (expect_false (ta->next->flags & CF_DESTROYED))
1526 { 1643 {
1527 UNLOCK;
1528 SvREFCNT_dec (next_sv); 1644 SvREFCNT_dec (next_sv);
1529 /* coro_nready is already taken care of by destroy */ 1645 /* coro_nready has already been taken care of by destroy */
1530 continue; 1646 continue;
1531 } 1647 }
1532 1648
1533 --coro_nready; 1649 --coro_nready;
1534 UNLOCK;
1535 break; 1650 break;
1536 } 1651 }
1537 1652
1538 /* free this only after the transfer */ 1653 /* free this only after the transfer */
1539 prev_sv = SvRV (coro_current); 1654 prev_sv = SvRV (coro_current);
1540 ta->prev = SvSTATE (prev_sv); 1655 ta->prev = SvSTATE_hv (prev_sv);
1541 TRANSFER_CHECK (*ta); 1656 TRANSFER_CHECK (*ta);
1542 assert (ta->next->flags & CF_READY); 1657 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1543 ta->next->flags &= ~CF_READY; 1658 ta->next->flags &= ~CF_READY;
1544 SvRV_set (coro_current, next_sv); 1659 SvRV_set (coro_current, next_sv);
1545 1660
1546 LOCK;
1547 free_coro_mortal (aTHX); 1661 free_coro_mortal (aTHX);
1548 coro_mortal = prev_sv; 1662 coro_mortal = prev_sv;
1549 UNLOCK;
1550} 1663}
1551 1664
1552static void 1665INLINE void
1553prepare_cede (pTHX_ struct transfer_args *ta) 1666prepare_cede (pTHX_ struct coro_transfer_args *ta)
1554{ 1667{
1555 api_ready (coro_current); 1668 api_ready (aTHX_ coro_current);
1556 prepare_schedule (aTHX_ ta); 1669 prepare_schedule (aTHX_ ta);
1557} 1670}
1558 1671
1672INLINE void
1673prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1674{
1675 SV *prev = SvRV (coro_current);
1676
1677 if (coro_nready)
1678 {
1679 prepare_schedule (aTHX_ ta);
1680 api_ready (aTHX_ prev);
1681 }
1682 else
1683 prepare_nop (aTHX_ ta);
1684}
1685
1686static void
1687api_schedule (pTHX)
1688{
1689 struct coro_transfer_args ta;
1690
1691 prepare_schedule (aTHX_ &ta);
1692 TRANSFER (ta, 1);
1693}
1694
1559static int 1695static int
1560prepare_cede_notself (pTHX_ struct transfer_args *ta) 1696api_cede (pTHX)
1561{ 1697{
1562 if (coro_nready) 1698 struct coro_transfer_args ta;
1563 { 1699
1564 SV *prev = SvRV (coro_current);
1565 prepare_schedule (aTHX_ ta); 1700 prepare_cede (aTHX_ &ta);
1566 api_ready (prev); 1701
1702 if (expect_true (ta.prev != ta.next))
1703 {
1704 TRANSFER (ta, 1);
1567 return 1; 1705 return 1;
1568 } 1706 }
1569 else 1707 else
1570 return 0; 1708 return 0;
1571} 1709}
1572 1710
1573static void
1574api_schedule (void)
1575{
1576 dTHX;
1577 struct transfer_args ta;
1578
1579 prepare_schedule (aTHX_ &ta);
1580 TRANSFER (ta, 1);
1581}
1582
1583static int 1711static int
1584api_cede (void) 1712api_cede_notself (pTHX)
1585{ 1713{
1586 dTHX; 1714 if (coro_nready)
1715 {
1587 struct transfer_args ta; 1716 struct coro_transfer_args ta;
1588 1717
1589 prepare_cede (aTHX_ &ta); 1718 prepare_cede_notself (aTHX_ &ta);
1590
1591 if (expect_true (ta.prev != ta.next))
1592 {
1593 TRANSFER (ta, 1); 1719 TRANSFER (ta, 1);
1594 return 1; 1720 return 1;
1595 } 1721 }
1596 else 1722 else
1597 return 0; 1723 return 0;
1598} 1724}
1599 1725
1600static int 1726static void
1601api_cede_notself (void)
1602{
1603 dTHX;
1604 struct transfer_args ta;
1605
1606 if (prepare_cede_notself (aTHX_ &ta))
1607 {
1608 TRANSFER (ta, 1);
1609 return 1;
1610 }
1611 else
1612 return 0;
1613}
1614
1615static void
1616api_trace (SV *coro_sv, int flags) 1727api_trace (pTHX_ SV *coro_sv, int flags)
1617{ 1728{
1618 dTHX;
1619 struct coro *coro = SvSTATE (coro_sv); 1729 struct coro *coro = SvSTATE (coro_sv);
1620 1730
1621 if (flags & CC_TRACE) 1731 if (flags & CC_TRACE)
1622 { 1732 {
1623 if (!coro->cctx) 1733 if (!coro->cctx)
1624 coro->cctx = cctx_new (); 1734 coro->cctx = cctx_new_run ();
1625 else if (!(coro->cctx->flags & CC_TRACE)) 1735 else if (!(coro->cctx->flags & CC_TRACE))
1626 croak ("cannot enable tracing on coroutine with custom stack"); 1736 croak ("cannot enable tracing on coroutine with custom stack,");
1627 1737
1628 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1738 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1629 } 1739 }
1630 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1740 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1631 { 1741 {
… …
1636 else 1746 else
1637 coro->slot->runops = RUNOPS_DEFAULT; 1747 coro->slot->runops = RUNOPS_DEFAULT;
1638 } 1748 }
1639} 1749}
1640 1750
1751/*****************************************************************************/
1752/* rouse callback */
1753
1754#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1755
1756static void
1757coro_rouse_callback (pTHX_ CV *cv)
1758{
1759 dXSARGS;
1760 SV *data = (SV *)GENSUB_ARG;
1761
1762 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1763 {
1764 /* first call, set args */
1765 int i;
1766 AV *av = newAV ();
1767 SV *coro = SvRV (data);
1768
1769 SvRV_set (data, (SV *)av);
1770 api_ready (aTHX_ coro);
1771 SvREFCNT_dec (coro);
1772
1773 /* better take a full copy of the arguments */
1774 while (items--)
1775 av_store (av, items, newSVsv (ST (items)));
1776 }
1777
1778 XSRETURN_EMPTY;
1779}
1780
1641static int 1781static int
1642coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1782slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1643{ 1783{
1644 AV *padlist; 1784 SV *data = (SV *)frame->data;
1645 AV *av = (AV *)mg->mg_obj; 1785
1786 if (CORO_THROW)
1787 return 0;
1646 1788
1647 abort (); 1789 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1790 return 1;
1791
1792 /* now push all results on the stack */
1793 {
1794 dSP;
1795 AV *av = (AV *)SvRV (data);
1796 int i;
1797
1798 EXTEND (SP, AvFILLp (av) + 1);
1799 for (i = 0; i <= AvFILLp (av); ++i)
1800 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1801
1802 /* we have stolen the elements, so ste length to zero and free */
1803 AvFILLp (av) = -1;
1804 av_undef (av);
1805
1806 PUTBACK;
1807 }
1648 1808
1649 return 0; 1809 return 0;
1650} 1810}
1651 1811
1652static MGVTBL coro_gensub_vtbl = { 1812static void
1653 0, 0, 0, 0, 1813slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1654 coro_gensub_free 1814{
1655}; 1815 SV *cb;
1816
1817 if (items)
1818 cb = arg [0];
1819 else
1820 {
1821 struct coro *coro = SvSTATE_current;
1822
1823 if (!coro->rouse_cb)
1824 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1825
1826 cb = sv_2mortal (coro->rouse_cb);
1827 coro->rouse_cb = 0;
1828 }
1829
1830 if (!SvROK (cb)
1831 || SvTYPE (SvRV (cb)) != SVt_PVCV
1832 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1833 croak ("Coro::rouse_wait called with illegal callback argument,");
1834
1835 {
1836 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1837 SV *data = (SV *)GENSUB_ARG;
1838
1839 frame->data = (void *)data;
1840 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1841 frame->check = slf_check_rouse_wait;
1842 }
1843}
1844
1845static SV *
1846coro_new_rouse_cb (pTHX)
1847{
1848 HV *hv = (HV *)SvRV (coro_current);
1849 struct coro *coro = SvSTATE_hv (hv);
1850 SV *data = newRV_inc ((SV *)hv);
1851 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1852
1853 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1854 SvREFCNT_dec (data); /* magicext increases the refcount */
1855
1856 SvREFCNT_dec (coro->rouse_cb);
1857 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1858
1859 return cb;
1860}
1861
1862/*****************************************************************************/
1863/* schedule-like-function opcode (SLF) */
1864
1865static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1866static const CV *slf_cv;
1867static SV **slf_argv;
1868static int slf_argc, slf_arga; /* count, allocated */
1869static I32 slf_ax; /* top of stack, for restore */
1870
1871/* this restores the stack in the case we patched the entersub, to */
1872/* recreate the stack frame as perl will on following calls */
1873/* since entersub cleared the stack */
1874static OP *
1875pp_restore (pTHX)
1876{
1877 int i;
1878 SV **SP = PL_stack_base + slf_ax;
1879
1880 PUSHMARK (SP);
1881
1882 EXTEND (SP, slf_argc + 1);
1883
1884 for (i = 0; i < slf_argc; ++i)
1885 PUSHs (sv_2mortal (slf_argv [i]));
1886
1887 PUSHs ((SV *)CvGV (slf_cv));
1888
1889 RETURNOP (slf_restore.op_first);
1890}
1891
1892static void
1893slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1894{
1895 SV **arg = (SV **)slf_frame.data;
1896
1897 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1898}
1899
1900static void
1901slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1902{
1903 if (items != 2)
1904 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1905
1906 frame->prepare = slf_prepare_transfer;
1907 frame->check = slf_check_nop;
1908 frame->data = (void *)arg; /* let's hope it will stay valid */
1909}
1910
1911static void
1912slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1913{
1914 frame->prepare = prepare_schedule;
1915 frame->check = slf_check_nop;
1916}
1917
1918static void
1919slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1920{
1921 frame->prepare = prepare_cede;
1922 frame->check = slf_check_nop;
1923}
1924
1925static void
1926slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1927{
1928 frame->prepare = prepare_cede_notself;
1929 frame->check = slf_check_nop;
1930}
1931
1932/*
1933 * these not obviously related functions are all rolled into one
1934 * function to increase chances that they all will call transfer with the same
1935 * stack offset
1936 * SLF stands for "schedule-like-function".
1937 */
1938static OP *
1939pp_slf (pTHX)
1940{
1941 I32 checkmark; /* mark SP to see how many elements check has pushed */
1942
1943 /* set up the slf frame, unless it has already been set-up */
1944 /* the latter happens when a new coro has been started */
1945 /* or when a new cctx was attached to an existing coroutine */
1946 if (expect_true (!slf_frame.prepare))
1947 {
1948 /* first iteration */
1949 dSP;
1950 SV **arg = PL_stack_base + TOPMARK + 1;
1951 int items = SP - arg; /* args without function object */
1952 SV *gv = *sp;
1953
1954 /* do a quick consistency check on the "function" object, and if it isn't */
1955 /* for us, divert to the real entersub */
1956 if (SvTYPE (gv) != SVt_PVGV
1957 || !GvCV (gv)
1958 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1959 return PL_ppaddr[OP_ENTERSUB](aTHX);
1960
1961 if (!(PL_op->op_flags & OPf_STACKED))
1962 {
1963 /* ampersand-form of call, use @_ instead of stack */
1964 AV *av = GvAV (PL_defgv);
1965 arg = AvARRAY (av);
1966 items = AvFILLp (av) + 1;
1967 }
1968
1969 /* now call the init function, which needs to set up slf_frame */
1970 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1971 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1972
1973 /* pop args */
1974 SP = PL_stack_base + POPMARK;
1975
1976 PUTBACK;
1977 }
1978
1979 /* now that we have a slf_frame, interpret it! */
1980 /* we use a callback system not to make the code needlessly */
1981 /* complicated, but so we can run multiple perl coros from one cctx */
1982
1983 do
1984 {
1985 struct coro_transfer_args ta;
1986
1987 slf_frame.prepare (aTHX_ &ta);
1988 TRANSFER (ta, 0);
1989
1990 checkmark = PL_stack_sp - PL_stack_base;
1991 }
1992 while (slf_frame.check (aTHX_ &slf_frame));
1993
1994 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1995
1996 /* exception handling */
1997 if (expect_false (CORO_THROW))
1998 {
1999 SV *exception = sv_2mortal (CORO_THROW);
2000
2001 CORO_THROW = 0;
2002 sv_setsv (ERRSV, exception);
2003 croak (0);
2004 }
2005
2006 /* return value handling - mostly like entersub */
2007 /* make sure we put something on the stack in scalar context */
2008 if (GIMME_V == G_SCALAR)
2009 {
2010 dSP;
2011 SV **bot = PL_stack_base + checkmark;
2012
2013 if (sp == bot) /* too few, push undef */
2014 bot [1] = &PL_sv_undef;
2015 else if (sp != bot + 1) /* too many, take last one */
2016 bot [1] = *sp;
2017
2018 SP = bot + 1;
2019
2020 PUTBACK;
2021 }
2022
2023 return NORMAL;
2024}
2025
2026static void
2027api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2028{
2029 int i;
2030 SV **arg = PL_stack_base + ax;
2031 int items = PL_stack_sp - arg + 1;
2032
2033 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2034
2035 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2036 && PL_op->op_ppaddr != pp_slf)
2037 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2038
2039 CvFLAGS (cv) |= CVf_SLF;
2040 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2041 slf_cv = cv;
2042
2043 /* we patch the op, and then re-run the whole call */
2044 /* we have to put the same argument on the stack for this to work */
2045 /* and this will be done by pp_restore */
2046 slf_restore.op_next = (OP *)&slf_restore;
2047 slf_restore.op_type = OP_CUSTOM;
2048 slf_restore.op_ppaddr = pp_restore;
2049 slf_restore.op_first = PL_op;
2050
2051 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2052
2053 if (PL_op->op_flags & OPf_STACKED)
2054 {
2055 if (items > slf_arga)
2056 {
2057 slf_arga = items;
2058 free (slf_argv);
2059 slf_argv = malloc (slf_arga * sizeof (SV *));
2060 }
2061
2062 slf_argc = items;
2063
2064 for (i = 0; i < items; ++i)
2065 slf_argv [i] = SvREFCNT_inc (arg [i]);
2066 }
2067 else
2068 slf_argc = 0;
2069
2070 PL_op->op_ppaddr = pp_slf;
2071 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2072
2073 PL_op = (OP *)&slf_restore;
2074}
1656 2075
1657/*****************************************************************************/ 2076/*****************************************************************************/
1658/* PerlIO::cede */ 2077/* PerlIO::cede */
1659 2078
1660typedef struct 2079typedef struct
… …
1688 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2107 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1689 double now = nvtime (); 2108 double now = nvtime ();
1690 2109
1691 if (now >= self->next) 2110 if (now >= self->next)
1692 { 2111 {
1693 api_cede (); 2112 api_cede (aTHX);
1694 self->next = now + self->every; 2113 self->next = now + self->every;
1695 } 2114 }
1696 2115
1697 return PerlIOBuf_flush (aTHX_ f); 2116 return PerlIOBuf_flush (aTHX_ f);
1698} 2117}
… …
1727 PerlIOBuf_get_ptr, 2146 PerlIOBuf_get_ptr,
1728 PerlIOBuf_get_cnt, 2147 PerlIOBuf_get_cnt,
1729 PerlIOBuf_set_ptrcnt, 2148 PerlIOBuf_set_ptrcnt,
1730}; 2149};
1731 2150
2151/*****************************************************************************/
2152/* Coro::Semaphore & Coro::Signal */
2153
2154static SV *
2155coro_waitarray_new (pTHX_ int count)
2156{
2157 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2158 AV *av = newAV ();
2159 SV **ary;
2160
2161 /* unfortunately, building manually saves memory */
2162 Newx (ary, 2, SV *);
2163 AvALLOC (av) = ary;
2164 /*AvARRAY (av) = ary;*/
2165 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2166 AvMAX (av) = 1;
2167 AvFILLp (av) = 0;
2168 ary [0] = newSViv (count);
2169
2170 return newRV_noinc ((SV *)av);
2171}
2172
2173/* semaphore */
2174
2175static void
2176coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2177{
2178 SV *count_sv = AvARRAY (av)[0];
2179 IV count = SvIVX (count_sv);
2180
2181 count += adjust;
2182 SvIVX (count_sv) = count;
2183
2184 /* now wake up as many waiters as are expected to lock */
2185 while (count > 0 && AvFILLp (av) > 0)
2186 {
2187 SV *cb;
2188
2189 /* swap first two elements so we can shift a waiter */
2190 AvARRAY (av)[0] = AvARRAY (av)[1];
2191 AvARRAY (av)[1] = count_sv;
2192 cb = av_shift (av);
2193
2194 if (SvOBJECT (cb))
2195 {
2196 api_ready (aTHX_ cb);
2197 --count;
2198 }
2199 else if (SvTYPE (cb) == SVt_PVCV)
2200 {
2201 dSP;
2202 PUSHMARK (SP);
2203 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2204 PUTBACK;
2205 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2206 }
2207
2208 SvREFCNT_dec (cb);
2209 }
2210}
2211
2212static void
2213coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2214{
2215 /* call $sem->adjust (0) to possibly wake up some other waiters */
2216 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2217}
2218
2219static int
2220slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2221{
2222 AV *av = (AV *)frame->data;
2223 SV *count_sv = AvARRAY (av)[0];
2224
2225 /* if we are about to throw, don't actually acquire the lock, just throw */
2226 if (CORO_THROW)
2227 return 0;
2228 else if (SvIVX (count_sv) > 0)
2229 {
2230 SvSTATE_current->on_destroy = 0;
2231
2232 if (acquire)
2233 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2234 else
2235 coro_semaphore_adjust (aTHX_ av, 0);
2236
2237 return 0;
2238 }
2239 else
2240 {
2241 int i;
2242 /* if we were woken up but can't down, we look through the whole */
2243 /* waiters list and only add us if we aren't in there already */
2244 /* this avoids some degenerate memory usage cases */
2245
2246 for (i = 1; i <= AvFILLp (av); ++i)
2247 if (AvARRAY (av)[i] == SvRV (coro_current))
2248 return 1;
2249
2250 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2251 return 1;
2252 }
2253}
2254
2255static int
2256slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2257{
2258 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2259}
2260
2261static int
2262slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2263{
2264 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2265}
2266
2267static void
2268slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2269{
2270 AV *av = (AV *)SvRV (arg [0]);
2271
2272 if (SvIVX (AvARRAY (av)[0]) > 0)
2273 {
2274 frame->data = (void *)av;
2275 frame->prepare = prepare_nop;
2276 }
2277 else
2278 {
2279 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2280
2281 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2282 frame->prepare = prepare_schedule;
2283
2284 /* to avoid race conditions when a woken-up coro gets terminated */
2285 /* we arrange for a temporary on_destroy that calls adjust (0) */
2286 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2287 }
2288}
2289
2290static void
2291slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2292{
2293 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2294 frame->check = slf_check_semaphore_down;
2295}
2296
2297static void
2298slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2299{
2300 if (items >= 2)
2301 {
2302 /* callback form */
2303 AV *av = (AV *)SvRV (arg [0]);
2304 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2305
2306 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2307
2308 if (SvIVX (AvARRAY (av)[0]) > 0)
2309 coro_semaphore_adjust (aTHX_ av, 0);
2310
2311 frame->prepare = prepare_nop;
2312 frame->check = slf_check_nop;
2313 }
2314 else
2315 {
2316 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2317 frame->check = slf_check_semaphore_wait;
2318 }
2319}
2320
2321/* signal */
2322
2323static void
2324coro_signal_wake (pTHX_ AV *av, int count)
2325{
2326 SvIVX (AvARRAY (av)[0]) = 0;
2327
2328 /* now signal count waiters */
2329 while (count > 0 && AvFILLp (av) > 0)
2330 {
2331 SV *cb;
2332
2333 /* swap first two elements so we can shift a waiter */
2334 cb = AvARRAY (av)[0];
2335 AvARRAY (av)[0] = AvARRAY (av)[1];
2336 AvARRAY (av)[1] = cb;
2337
2338 cb = av_shift (av);
2339
2340 api_ready (aTHX_ cb);
2341 sv_setiv (cb, 0); /* signal waiter */
2342 SvREFCNT_dec (cb);
2343
2344 --count;
2345 }
2346}
2347
2348static int
2349slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2350{
2351 /* if we are about to throw, also stop waiting */
2352 return SvROK ((SV *)frame->data) && !CORO_THROW;
2353}
2354
2355static void
2356slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2357{
2358 AV *av = (AV *)SvRV (arg [0]);
2359
2360 if (SvIVX (AvARRAY (av)[0]))
2361 {
2362 SvIVX (AvARRAY (av)[0]) = 0;
2363 frame->prepare = prepare_nop;
2364 frame->check = slf_check_nop;
2365 }
2366 else
2367 {
2368 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2369
2370 av_push (av, waiter);
2371
2372 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2373 frame->prepare = prepare_schedule;
2374 frame->check = slf_check_signal_wait;
2375 }
2376}
2377
2378/*****************************************************************************/
2379/* Coro::AIO */
2380
2381#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2382
2383/* helper storage struct */
2384struct io_state
2385{
2386 int errorno;
2387 I32 laststype; /* U16 in 5.10.0 */
2388 int laststatval;
2389 Stat_t statcache;
2390};
2391
2392static void
2393coro_aio_callback (pTHX_ CV *cv)
2394{
2395 dXSARGS;
2396 AV *state = (AV *)GENSUB_ARG;
2397 SV *coro = av_pop (state);
2398 SV *data_sv = newSV (sizeof (struct io_state));
2399
2400 av_extend (state, items);
2401
2402 sv_upgrade (data_sv, SVt_PV);
2403 SvCUR_set (data_sv, sizeof (struct io_state));
2404 SvPOK_only (data_sv);
2405
2406 {
2407 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2408
2409 data->errorno = errno;
2410 data->laststype = PL_laststype;
2411 data->laststatval = PL_laststatval;
2412 data->statcache = PL_statcache;
2413 }
2414
2415 /* now build the result vector out of all the parameters and the data_sv */
2416 {
2417 int i;
2418
2419 for (i = 0; i < items; ++i)
2420 av_push (state, SvREFCNT_inc_NN (ST (i)));
2421 }
2422
2423 av_push (state, data_sv);
2424
2425 api_ready (aTHX_ coro);
2426 SvREFCNT_dec (coro);
2427 SvREFCNT_dec ((AV *)state);
2428}
2429
2430static int
2431slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2432{
2433 AV *state = (AV *)frame->data;
2434
2435 /* if we are about to throw, return early */
2436 /* this does not cancel the aio request, but at least */
2437 /* it quickly returns */
2438 if (CORO_THROW)
2439 return 0;
2440
2441 /* one element that is an RV? repeat! */
2442 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2443 return 1;
2444
2445 /* restore status */
2446 {
2447 SV *data_sv = av_pop (state);
2448 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2449
2450 errno = data->errorno;
2451 PL_laststype = data->laststype;
2452 PL_laststatval = data->laststatval;
2453 PL_statcache = data->statcache;
2454
2455 SvREFCNT_dec (data_sv);
2456 }
2457
2458 /* push result values */
2459 {
2460 dSP;
2461 int i;
2462
2463 EXTEND (SP, AvFILLp (state) + 1);
2464 for (i = 0; i <= AvFILLp (state); ++i)
2465 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2466
2467 PUTBACK;
2468 }
2469
2470 return 0;
2471}
2472
2473static void
2474slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2475{
2476 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2477 SV *coro_hv = SvRV (coro_current);
2478 struct coro *coro = SvSTATE_hv (coro_hv);
2479
2480 /* put our coroutine id on the state arg */
2481 av_push (state, SvREFCNT_inc_NN (coro_hv));
2482
2483 /* first see whether we have a non-zero priority and set it as AIO prio */
2484 if (coro->prio)
2485 {
2486 dSP;
2487
2488 static SV *prio_cv;
2489 static SV *prio_sv;
2490
2491 if (expect_false (!prio_cv))
2492 {
2493 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2494 prio_sv = newSViv (0);
2495 }
2496
2497 PUSHMARK (SP);
2498 sv_setiv (prio_sv, coro->prio);
2499 XPUSHs (prio_sv);
2500
2501 PUTBACK;
2502 call_sv (prio_cv, G_VOID | G_DISCARD);
2503 }
2504
2505 /* now call the original request */
2506 {
2507 dSP;
2508 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2509 int i;
2510
2511 PUSHMARK (SP);
2512
2513 /* first push all args to the stack */
2514 EXTEND (SP, items + 1);
2515
2516 for (i = 0; i < items; ++i)
2517 PUSHs (arg [i]);
2518
2519 /* now push the callback closure */
2520 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2521
2522 /* now call the AIO function - we assume our request is uncancelable */
2523 PUTBACK;
2524 call_sv ((SV *)req, G_VOID | G_DISCARD);
2525 }
2526
2527 /* now that the requets is going, we loop toll we have a result */
2528 frame->data = (void *)state;
2529 frame->prepare = prepare_schedule;
2530 frame->check = slf_check_aio_req;
2531}
2532
2533static void
2534coro_aio_req_xs (pTHX_ CV *cv)
2535{
2536 dXSARGS;
2537
2538 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2539
2540 XSRETURN_EMPTY;
2541}
2542
2543/*****************************************************************************/
1732 2544
1733MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2545MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1734 2546
1735PROTOTYPES: DISABLE 2547PROTOTYPES: DISABLE
1736 2548
1737BOOT: 2549BOOT:
1738{ 2550{
1739#ifdef USE_ITHREADS 2551#ifdef USE_ITHREADS
1740 MUTEX_INIT (&coro_mutex); 2552# if CORO_PTHREAD
2553 coro_thx = PERL_GET_CONTEXT;
2554# endif
1741#endif 2555#endif
1742 BOOT_PAGESIZE; 2556 BOOT_PAGESIZE;
1743 2557
1744 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2558 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1745 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2559 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1763 main_top_env = PL_top_env; 2577 main_top_env = PL_top_env;
1764 2578
1765 while (main_top_env->je_prev) 2579 while (main_top_env->je_prev)
1766 main_top_env = main_top_env->je_prev; 2580 main_top_env = main_top_env->je_prev;
1767 2581
2582 {
2583 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2584
2585 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2586 hv_store_ent (PL_custom_op_names, slf,
2587 newSVpv ("coro_slf", 0), 0);
2588
2589 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2590 hv_store_ent (PL_custom_op_descs, slf,
2591 newSVpv ("coro schedule like function", 0), 0);
2592 }
2593
1768 coroapi.ver = CORO_API_VERSION; 2594 coroapi.ver = CORO_API_VERSION;
1769 coroapi.rev = CORO_API_REVISION; 2595 coroapi.rev = CORO_API_REVISION;
2596
1770 coroapi.transfer = api_transfer; 2597 coroapi.transfer = api_transfer;
2598
2599 coroapi.sv_state = SvSTATE_;
2600 coroapi.execute_slf = api_execute_slf;
2601 coroapi.prepare_nop = prepare_nop;
2602 coroapi.prepare_schedule = prepare_schedule;
2603 coroapi.prepare_cede = prepare_cede;
2604 coroapi.prepare_cede_notself = prepare_cede_notself;
1771 2605
1772 { 2606 {
1773 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2607 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1774 2608
1775 if (!svp) croak ("Time::HiRes is required"); 2609 if (!svp) croak ("Time::HiRes is required");
… …
1781 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2615 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1782} 2616}
1783 2617
1784SV * 2618SV *
1785new (char *klass, ...) 2619new (char *klass, ...)
2620 ALIAS:
2621 Coro::new = 1
1786 CODE: 2622 CODE:
1787{ 2623{
1788 struct coro *coro; 2624 struct coro *coro;
1789 MAGIC *mg; 2625 MAGIC *mg;
1790 HV *hv; 2626 HV *hv;
2627 CV *cb;
1791 int i; 2628 int i;
2629
2630 if (items > 1)
2631 {
2632 cb = coro_sv_2cv (aTHX_ ST (1));
2633
2634 if (!ix)
2635 {
2636 if (CvISXSUB (cb))
2637 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2638
2639 if (!CvROOT (cb))
2640 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2641 }
2642 }
1792 2643
1793 Newz (0, coro, 1, struct coro); 2644 Newz (0, coro, 1, struct coro);
1794 coro->args = newAV (); 2645 coro->args = newAV ();
1795 coro->flags = CF_NEW; 2646 coro->flags = CF_NEW;
1796 2647
… …
1801 coro->hv = hv = newHV (); 2652 coro->hv = hv = newHV ();
1802 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2653 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1803 mg->mg_flags |= MGf_DUP; 2654 mg->mg_flags |= MGf_DUP;
1804 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2655 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1805 2656
2657 if (items > 1)
2658 {
1806 av_extend (coro->args, items - 1); 2659 av_extend (coro->args, items - 1 + ix);
2660
2661 if (ix)
2662 {
2663 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2664 cb = cv_coro_run;
2665 }
2666
2667 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2668
1807 for (i = 1; i < items; i++) 2669 for (i = 2; i < items; i++)
1808 av_push (coro->args, newSVsv (ST (i))); 2670 av_push (coro->args, newSVsv (ST (i)));
2671 }
1809} 2672}
1810 OUTPUT: 2673 OUTPUT:
1811 RETVAL 2674 RETVAL
1812 2675
1813# these not obviously related functions are all rolled into the same xs
1814# function to increase chances that they all will call transfer with the same
1815# stack offset
1816void 2676void
1817_set_stacklevel (...) 2677transfer (...)
1818 ALIAS: 2678 PROTOTYPE: $$
1819 Coro::State::transfer = 1 2679 CODE:
1820 Coro::schedule = 2 2680 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1821 Coro::cede = 3
1822 Coro::cede_notself = 4
1823 CODE:
1824{
1825 struct transfer_args ta;
1826
1827 PUTBACK;
1828 switch (ix)
1829 {
1830 case 0:
1831 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1832 ta.next = 0;
1833 break;
1834
1835 case 1:
1836 if (items != 2)
1837 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1838
1839 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1840 break;
1841
1842 case 2:
1843 prepare_schedule (aTHX_ &ta);
1844 break;
1845
1846 case 3:
1847 prepare_cede (aTHX_ &ta);
1848 break;
1849
1850 case 4:
1851 if (!prepare_cede_notself (aTHX_ &ta))
1852 XSRETURN_EMPTY;
1853
1854 break;
1855 }
1856 SPAGAIN;
1857
1858 BARRIER;
1859 PUTBACK;
1860 TRANSFER (ta, 0);
1861 SPAGAIN; /* might be the sp of a different coroutine now */
1862 /* be extra careful not to ever do anything after TRANSFER */
1863}
1864 2681
1865bool 2682bool
1866_destroy (SV *coro_sv) 2683_destroy (SV *coro_sv)
1867 CODE: 2684 CODE:
1868 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2685 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1875 CODE: 2692 CODE:
1876 _exit (code); 2693 _exit (code);
1877 2694
1878int 2695int
1879cctx_stacksize (int new_stacksize = 0) 2696cctx_stacksize (int new_stacksize = 0)
2697 PROTOTYPE: ;$
1880 CODE: 2698 CODE:
1881 RETVAL = coro_stacksize; 2699 RETVAL = cctx_stacksize;
1882 if (new_stacksize) 2700 if (new_stacksize)
2701 {
1883 coro_stacksize = new_stacksize; 2702 cctx_stacksize = new_stacksize;
2703 ++cctx_gen;
2704 }
1884 OUTPUT: 2705 OUTPUT:
1885 RETVAL 2706 RETVAL
1886 2707
1887int 2708int
2709cctx_max_idle (int max_idle = 0)
2710 PROTOTYPE: ;$
2711 CODE:
2712 RETVAL = cctx_max_idle;
2713 if (max_idle > 1)
2714 cctx_max_idle = max_idle;
2715 OUTPUT:
2716 RETVAL
2717
2718int
1888cctx_count () 2719cctx_count ()
2720 PROTOTYPE:
1889 CODE: 2721 CODE:
1890 RETVAL = cctx_count; 2722 RETVAL = cctx_count;
1891 OUTPUT: 2723 OUTPUT:
1892 RETVAL 2724 RETVAL
1893 2725
1894int 2726int
1895cctx_idle () 2727cctx_idle ()
2728 PROTOTYPE:
1896 CODE: 2729 CODE:
1897 RETVAL = cctx_idle; 2730 RETVAL = cctx_idle;
1898 OUTPUT: 2731 OUTPUT:
1899 RETVAL 2732 RETVAL
1900 2733
1901void 2734void
1902list () 2735list ()
2736 PROTOTYPE:
1903 PPCODE: 2737 PPCODE:
1904{ 2738{
1905 struct coro *coro; 2739 struct coro *coro;
1906 for (coro = coro_first; coro; coro = coro->next) 2740 for (coro = coro_first; coro; coro = coro->next)
1907 if (coro->hv) 2741 if (coro->hv)
… …
1966 RETVAL = boolSV (coro->flags & ix); 2800 RETVAL = boolSV (coro->flags & ix);
1967 OUTPUT: 2801 OUTPUT:
1968 RETVAL 2802 RETVAL
1969 2803
1970void 2804void
2805throw (Coro::State self, SV *throw = &PL_sv_undef)
2806 PROTOTYPE: $;$
2807 CODE:
2808{
2809 struct coro *current = SvSTATE_current;
2810 SV **throwp = self == current ? &CORO_THROW : &self->except;
2811 SvREFCNT_dec (*throwp);
2812 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2813}
2814
2815void
1971api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2816api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2817 PROTOTYPE: $;$
2818 C_ARGS: aTHX_ coro, flags
1972 2819
1973SV * 2820SV *
1974has_cctx (Coro::State coro) 2821has_cctx (Coro::State coro)
1975 PROTOTYPE: $ 2822 PROTOTYPE: $
1976 CODE: 2823 CODE:
… …
1984 CODE: 2831 CODE:
1985 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2832 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1986 OUTPUT: 2833 OUTPUT:
1987 RETVAL 2834 RETVAL
1988 2835
1989IV 2836UV
1990rss (Coro::State coro) 2837rss (Coro::State coro)
1991 PROTOTYPE: $ 2838 PROTOTYPE: $
1992 ALIAS: 2839 ALIAS:
1993 usecount = 1 2840 usecount = 1
1994 CODE: 2841 CODE:
… …
2000 OUTPUT: 2847 OUTPUT:
2001 RETVAL 2848 RETVAL
2002 2849
2003void 2850void
2004force_cctx () 2851force_cctx ()
2852 PROTOTYPE:
2005 CODE: 2853 CODE:
2006 struct coro *coro = SvSTATE (coro_current);
2007 coro->cctx->idle_sp = 0; 2854 SvSTATE_current->cctx->idle_sp = 0;
2008
2009void
2010throw (Coro::State self, SV *throw = &PL_sv_undef)
2011 PROTOTYPE: $;$
2012 CODE:
2013 SvREFCNT_dec (self->throw);
2014 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2015 2855
2016void 2856void
2017swap_defsv (Coro::State self) 2857swap_defsv (Coro::State self)
2018 PROTOTYPE: $ 2858 PROTOTYPE: $
2019 ALIAS: 2859 ALIAS:
2020 swap_defav = 1 2860 swap_defav = 1
2021 CODE: 2861 CODE:
2022 if (!self->slot) 2862 if (!self->slot)
2023 croak ("cannot swap state with coroutine that has no saved state"); 2863 croak ("cannot swap state with coroutine that has no saved state,");
2024 else 2864 else
2025 { 2865 {
2026 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2866 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2027 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2867 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2028 2868
2029 SV *tmp = *src; *src = *dst; *dst = tmp; 2869 SV *tmp = *src; *src = *dst; *dst = tmp;
2030 } 2870 }
2031 2871
2872
2032MODULE = Coro::State PACKAGE = Coro 2873MODULE = Coro::State PACKAGE = Coro
2033 2874
2034BOOT: 2875BOOT:
2035{ 2876{
2036 int i; 2877 int i;
2037 2878
2038 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 2879 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2039 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2880 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2040 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2881 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2041 2882 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2042 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2883 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2043 SvREADONLY_on (coro_current); 2884 SvREADONLY_on (coro_current);
2044 2885
2045 coro_stash = gv_stashpv ("Coro", TRUE); 2886 coro_stash = gv_stashpv ("Coro", TRUE);
2046 2887
2047 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2888 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
2053 2894
2054 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2895 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2055 coro_ready[i] = newAV (); 2896 coro_ready[i] = newAV ();
2056 2897
2057 { 2898 {
2058 SV *sv = perl_get_sv ("Coro::API", TRUE); 2899 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2059 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2060 2900
2061 coroapi.schedule = api_schedule; 2901 coroapi.schedule = api_schedule;
2062 coroapi.cede = api_cede; 2902 coroapi.cede = api_cede;
2063 coroapi.cede_notself = api_cede_notself; 2903 coroapi.cede_notself = api_cede_notself;
2064 coroapi.ready = api_ready; 2904 coroapi.ready = api_ready;
2065 coroapi.is_ready = api_is_ready; 2905 coroapi.is_ready = api_is_ready;
2066 coroapi.nready = &coro_nready; 2906 coroapi.nready = coro_nready;
2067 coroapi.current = coro_current; 2907 coroapi.current = coro_current;
2068 2908
2069 GCoroAPI = &coroapi; 2909 /*GCoroAPI = &coroapi;*/
2070 sv_setiv (sv, (IV)&coroapi); 2910 sv_setiv (sv, (IV)&coroapi);
2071 SvREADONLY_on (sv); 2911 SvREADONLY_on (sv);
2072 } 2912 }
2073} 2913}
2914
2915void
2916schedule (...)
2917 CODE:
2918 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2919
2920void
2921cede (...)
2922 CODE:
2923 CORO_EXECUTE_SLF_XS (slf_init_cede);
2924
2925void
2926cede_notself (...)
2927 CODE:
2928 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2074 2929
2075void 2930void
2076_set_current (SV *current) 2931_set_current (SV *current)
2077 PROTOTYPE: $ 2932 PROTOTYPE: $
2078 CODE: 2933 CODE:
… …
2081 2936
2082void 2937void
2083_set_readyhook (SV *hook) 2938_set_readyhook (SV *hook)
2084 PROTOTYPE: $ 2939 PROTOTYPE: $
2085 CODE: 2940 CODE:
2086 LOCK;
2087 SvREFCNT_dec (coro_readyhook); 2941 SvREFCNT_dec (coro_readyhook);
2088 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2942 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2089 UNLOCK;
2090 2943
2091int 2944int
2092prio (Coro::State coro, int newprio = 0) 2945prio (Coro::State coro, int newprio = 0)
2946 PROTOTYPE: $;$
2093 ALIAS: 2947 ALIAS:
2094 nice = 1 2948 nice = 1
2095 CODE: 2949 CODE:
2096{ 2950{
2097 RETVAL = coro->prio; 2951 RETVAL = coro->prio;
… …
2112 2966
2113SV * 2967SV *
2114ready (SV *self) 2968ready (SV *self)
2115 PROTOTYPE: $ 2969 PROTOTYPE: $
2116 CODE: 2970 CODE:
2117 RETVAL = boolSV (api_ready (self)); 2971 RETVAL = boolSV (api_ready (aTHX_ self));
2118 OUTPUT: 2972 OUTPUT:
2119 RETVAL 2973 RETVAL
2120 2974
2121int 2975int
2122nready (...) 2976nready (...)
… …
2129# for async_pool speedup 2983# for async_pool speedup
2130void 2984void
2131_pool_1 (SV *cb) 2985_pool_1 (SV *cb)
2132 CODE: 2986 CODE:
2133{ 2987{
2134 struct coro *coro = SvSTATE (coro_current);
2135 HV *hv = (HV *)SvRV (coro_current); 2988 HV *hv = (HV *)SvRV (coro_current);
2989 struct coro *coro = SvSTATE_hv ((SV *)hv);
2136 AV *defav = GvAV (PL_defgv); 2990 AV *defav = GvAV (PL_defgv);
2137 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2991 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2138 AV *invoke_av; 2992 AV *invoke_av;
2139 int i, len; 2993 int i, len;
2140 2994
… …
2161 { 3015 {
2162 av_fill (defav, len - 1); 3016 av_fill (defav, len - 1);
2163 for (i = 0; i < len; ++i) 3017 for (i = 0; i < len; ++i)
2164 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3018 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2165 } 3019 }
2166
2167 SvREFCNT_dec (invoke);
2168} 3020}
2169 3021
2170void 3022void
2171_pool_2 (SV *cb) 3023_pool_2 (SV *cb)
2172 CODE: 3024 CODE:
2173{ 3025{
2174 struct coro *coro = SvSTATE (coro_current); 3026 HV *hv = (HV *)SvRV (coro_current);
3027 struct coro *coro = SvSTATE_hv ((SV *)hv);
2175 3028
2176 sv_setsv (cb, &PL_sv_undef); 3029 sv_setsv (cb, &PL_sv_undef);
2177 3030
2178 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3031 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2179 coro->saved_deffh = 0; 3032 coro->saved_deffh = 0;
2180 3033
2181 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 3034 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2182 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 3035 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2183 { 3036 {
2184 SV *old = PL_diehook; 3037 SV *old = PL_diehook;
2185 PL_diehook = 0; 3038 PL_diehook = 0;
2186 SvREFCNT_dec (old); 3039 SvREFCNT_dec (old);
2187 croak ("\3async_pool terminate\2\n"); 3040 croak ("\3async_pool terminate\2\n");
2188 } 3041 }
2189 3042
2190 av_clear (GvAV (PL_defgv)); 3043 av_clear (GvAV (PL_defgv));
2191 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 3044 hv_store (hv, "desc", sizeof ("desc") - 1,
2192 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 3045 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2193 3046
2194 coro->prio = 0; 3047 coro->prio = 0;
2195 3048
2196 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3049 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2197 api_trace (coro_current, 0); 3050 api_trace (aTHX_ coro_current, 0);
2198 3051
2199 av_push (av_async_pool, newSVsv (coro_current)); 3052 av_push (av_async_pool, newSVsv (coro_current));
2200} 3053}
2201 3054
2202#if 0
2203
2204void
2205_generator_call (...)
2206 PROTOTYPE: @
2207 PPCODE:
2208 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2209 xxxx
2210 abort ();
2211
2212SV * 3055SV *
2213gensub (SV *sub, ...) 3056rouse_cb ()
2214 PROTOTYPE: &;@ 3057 PROTOTYPE:
2215 CODE: 3058 CODE:
2216{ 3059 RETVAL = coro_new_rouse_cb (aTHX);
2217 struct coro *coro;
2218 MAGIC *mg;
2219 CV *xcv;
2220 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2221 int i;
2222
2223 CvGV (ncv) = CvGV (cv);
2224 CvFILE (ncv) = CvFILE (cv);
2225
2226 Newz (0, coro, 1, struct coro);
2227 coro->args = newAV ();
2228 coro->flags = CF_NEW;
2229
2230 av_extend (coro->args, items - 1);
2231 for (i = 1; i < items; i++)
2232 av_push (coro->args, newSVsv (ST (i)));
2233
2234 CvISXSUB_on (ncv);
2235 CvXSUBANY (ncv).any_ptr = (void *)coro;
2236
2237 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2238
2239 CvXSUB (ncv) = CvXSUB (xcv);
2240 CvANON_on (ncv);
2241
2242 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2243 RETVAL = newRV_noinc ((SV *)ncv);
2244}
2245 OUTPUT: 3060 OUTPUT:
2246 RETVAL 3061 RETVAL
2247 3062
2248#endif
2249
2250
2251MODULE = Coro::State PACKAGE = Coro::AIO
2252
2253void 3063void
2254_get_state (SV *self) 3064rouse_wait (...)
3065 PROTOTYPE: ;$
2255 PPCODE: 3066 PPCODE:
2256{ 3067 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2257 AV *defav = GvAV (PL_defgv);
2258 AV *av = newAV ();
2259 int i;
2260 SV *data_sv = newSV (sizeof (struct io_state));
2261 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2262 SvCUR_set (data_sv, sizeof (struct io_state));
2263 SvPOK_only (data_sv);
2264 3068
2265 data->errorno = errno;
2266 data->laststype = PL_laststype;
2267 data->laststatval = PL_laststatval;
2268 data->statcache = PL_statcache;
2269 3069
2270 av_extend (av, AvFILLp (defav) + 1 + 1); 3070MODULE = Coro::State PACKAGE = PerlIO::cede
2271 3071
2272 for (i = 0; i <= AvFILLp (defav); ++i) 3072BOOT:
2273 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3073 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2274 3074
2275 av_push (av, data_sv);
2276 3075
2277 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3076MODULE = Coro::State PACKAGE = Coro::Semaphore
2278 3077
2279 api_ready (self); 3078SV *
2280} 3079new (SV *klass, SV *count = 0)
3080 CODE:
3081 RETVAL = sv_bless (
3082 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3083 GvSTASH (CvGV (cv))
3084 );
3085 OUTPUT:
3086 RETVAL
3087
3088# helper for Coro::Channel
3089SV *
3090_alloc (int count)
3091 CODE:
3092 RETVAL = coro_waitarray_new (aTHX_ count);
3093 OUTPUT:
3094 RETVAL
3095
3096SV *
3097count (SV *self)
3098 CODE:
3099 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3100 OUTPUT:
3101 RETVAL
2281 3102
2282void 3103void
2283_set_state (SV *state) 3104up (SV *self, int adjust = 1)
2284 PROTOTYPE: $ 3105 ALIAS:
3106 adjust = 1
3107 CODE:
3108 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3109
3110void
3111down (...)
3112 CODE:
3113 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3114
3115void
3116wait (...)
3117 CODE:
3118 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3119
3120void
3121try (SV *self)
3122 PPCODE:
3123{
3124 AV *av = (AV *)SvRV (self);
3125 SV *count_sv = AvARRAY (av)[0];
3126 IV count = SvIVX (count_sv);
3127
3128 if (count > 0)
3129 {
3130 --count;
3131 SvIVX (count_sv) = count;
3132 XSRETURN_YES;
3133 }
3134 else
3135 XSRETURN_NO;
3136}
3137
3138void
3139waiters (SV *self)
3140 PPCODE:
3141{
3142 AV *av = (AV *)SvRV (self);
3143 int wcount = AvFILLp (av) + 1 - 1;
3144
3145 if (GIMME_V == G_SCALAR)
3146 XPUSHs (sv_2mortal (newSViv (wcount)));
3147 else
3148 {
3149 int i;
3150 EXTEND (SP, wcount);
3151 for (i = 1; i <= wcount; ++i)
3152 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3153 }
3154}
3155
3156MODULE = Coro::State PACKAGE = Coro::Signal
3157
3158SV *
3159new (SV *klass)
2285 PPCODE: 3160 CODE:
3161 RETVAL = sv_bless (
3162 coro_waitarray_new (aTHX_ 0),
3163 GvSTASH (CvGV (cv))
3164 );
3165 OUTPUT:
3166 RETVAL
3167
3168void
3169wait (...)
3170 CODE:
3171 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3172
3173void
3174broadcast (SV *self)
3175 CODE:
2286{ 3176{
2287 AV *av = (AV *)SvRV (state); 3177 AV *av = (AV *)SvRV (self);
2288 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3178 coro_signal_wake (aTHX_ av, AvFILLp (av));
2289 int i; 3179}
2290 3180
2291 errno = data->errorno; 3181void
2292 PL_laststype = data->laststype; 3182send (SV *self)
2293 PL_laststatval = data->laststatval; 3183 CODE:
2294 PL_statcache = data->statcache; 3184{
3185 AV *av = (AV *)SvRV (self);
2295 3186
2296 EXTEND (SP, AvFILLp (av)); 3187 if (AvFILLp (av))
2297 for (i = 0; i < AvFILLp (av); ++i) 3188 coro_signal_wake (aTHX_ av, 1);
2298 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3189 else
3190 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2299} 3191}
3192
3193IV
3194awaited (SV *self)
3195 CODE:
3196 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3197 OUTPUT:
3198 RETVAL
2300 3199
2301 3200
2302MODULE = Coro::State PACKAGE = Coro::AnyEvent 3201MODULE = Coro::State PACKAGE = Coro::AnyEvent
2303 3202
2304BOOT: 3203BOOT:
2305 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3204 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2306 3205
2307SV * 3206void
2308_schedule (...) 3207_schedule (...)
2309 PROTOTYPE: @
2310 CODE: 3208 CODE:
2311{ 3209{
2312 static int incede; 3210 static int incede;
2313 3211
2314 api_cede_notself (); 3212 api_cede_notself (aTHX);
2315 3213
2316 ++incede; 3214 ++incede;
2317 while (coro_nready >= incede && api_cede ()) 3215 while (coro_nready >= incede && api_cede (aTHX))
2318 ; 3216 ;
2319 3217
2320 sv_setsv (sv_activity, &PL_sv_undef); 3218 sv_setsv (sv_activity, &PL_sv_undef);
2321 if (coro_nready >= incede) 3219 if (coro_nready >= incede)
2322 { 3220 {
2323 PUSHMARK (SP); 3221 PUSHMARK (SP);
2324 PUTBACK; 3222 PUTBACK;
2325 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3223 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2326 SPAGAIN;
2327 } 3224 }
2328 3225
2329 --incede; 3226 --incede;
2330} 3227}
2331 3228
2332 3229
2333MODULE = Coro::State PACKAGE = PerlIO::cede 3230MODULE = Coro::State PACKAGE = Coro::AIO
2334 3231
2335BOOT: 3232void
2336 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3233_register (char *target, char *proto, SV *req)
3234 CODE:
3235{
3236 CV *req_cv = coro_sv_2cv (aTHX_ req);
3237 /* newXSproto doesn't return the CV on 5.8 */
3238 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3239 sv_setpv ((SV *)slf_cv, proto);
3240 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3241}
3242

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