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Comparing Coro/Coro/State.xs (file contents):
Revision 1.259 by root, Mon Nov 10 00:02:29 2008 UTC vs.
Revision 1.308 by root, Wed Nov 19 15:09:57 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 */
57static int cctx_max_idle = 4; 54static int cctx_max_idle = 4;
58 55
… …
98# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
99#endif 96#endif
100#ifndef newSV 97#ifndef newSV
101# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
102#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103 103
104/* 5.8.7 */ 104/* 5.8.7 */
105#ifndef SvRV_set 105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif 107#endif
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 120#endif
121 121
122/* 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
123 * 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
124#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
125#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
126 131
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 133
129#if __GNUC__ >= 3 134#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
133#else 138#else
134# define attribute(x) 139# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 140# define expect(expr,value) (expr)
141# define INLINE static
137#endif 142#endif
138 143
139#define expect_false(expr) expect ((expr) != 0, 0) 144#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
141 146
142#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
143 148
144#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
145 151
146#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 153# if CORO_PTHREAD
152static void *coro_thx; 154static void *coro_thx;
153# endif 155# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 156#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 157
177static double (*nvtime)(); /* so why doesn't it take void? */ 158static double (*nvtime)(); /* so why doesn't it take void? */
159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
178 163
179static U32 cctx_gen; 164static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 168static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile char next_has_throw; /* speedup flag for next->throw check */
187 171
188static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 174static SV *rv_diehook;
191static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
210 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
211 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
212}; 196};
213 197
214/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
215typedef struct coro_cctx { 199typedef struct coro_cctx
200{
216 struct coro_cctx *next; 201 struct coro_cctx *next;
217 202
218 /* the stack */ 203 /* the stack */
219 void *sptr; 204 void *sptr;
220 size_t ssize; 205 size_t ssize;
… …
238 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
239 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
240}; 225};
241 226
242/* 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 */
243typedef struct { 228typedef struct
229{
244 SV *defsv; 230 SV *defsv;
245 AV *defav; 231 AV *defav;
246 SV *errsv; 232 SV *errsv;
247 SV *irsgv; 233 SV *irsgv;
248#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
252 238
253#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))
254 240
255/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
256struct coro { 242struct coro {
257 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
258 coro_cctx *cctx; 244 coro_cctx *cctx;
259 245
260 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
261 AV *mainstack; 248 AV *mainstack;
262 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
263 250
251 CV *startcv; /* the CV to execute */
264 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
265 int refcnt; /* coroutines are refcounted, yes */ 253 int refcnt; /* coroutines are refcounted, yes */
266 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
267 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);
268 257
269 /* statistics */ 258 /* statistics */
270 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
271 260
272 /* coro process data */ 261 /* coro process data */
273 int prio; 262 int prio;
274 SV *throw; /* exception to be thrown */ 263 SV *except; /* exception to be thrown */
264 SV *rouse_cb;
275 265
276 /* async_pool */ 266 /* async_pool */
277 SV *saved_deffh; 267 SV *saved_deffh;
278 268
279 /* linked list */ 269 /* linked list */
280 struct coro *next, *prev; 270 struct coro *next, *prev;
281}; 271};
282 272
283typedef struct coro *Coro__State; 273typedef struct coro *Coro__State;
284typedef 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 */
285 280
286/** Coro ********************************************************************/ 281/** Coro ********************************************************************/
287 282
288#define PRIO_MAX 3 283#define PRIO_MAX 3
289#define PRIO_HIGH 1 284#define PRIO_HIGH 1
… …
294 289
295/* for Coro.pm */ 290/* for Coro.pm */
296static SV *coro_current; 291static SV *coro_current;
297static SV *coro_readyhook; 292static SV *coro_readyhook;
298static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 293static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
299static int coro_nready;
300static struct coro *coro_first; 294static struct coro *coro_first;
295#define coro_nready coroapi.nready
301 296
302/** lowlevel stuff **********************************************************/ 297/** lowlevel stuff **********************************************************/
303 298
304static SV * 299static SV *
305coro_get_sv (pTHX_ const char *name, int create) 300coro_get_sv (pTHX_ const char *name, int create)
… …
327#if PERL_VERSION_ATLEAST (5,10,0) 322#if PERL_VERSION_ATLEAST (5,10,0)
328 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
329 get_hv (name, create); 324 get_hv (name, create);
330#endif 325#endif
331 return get_hv (name, create); 326 return get_hv (name, create);
327}
328
329/* may croak */
330INLINE CV *
331coro_sv_2cv (SV *sv)
332{
333 HV *st;
334 GV *gvp;
335 return sv_2cv (sv, &st, &gvp, 0);
332} 336}
333 337
334static AV * 338static AV *
335coro_clone_padlist (pTHX_ CV *cv) 339coro_clone_padlist (pTHX_ CV *cv)
336{ 340{
… …
390 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 394 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
391 395
392 return 0; 396 return 0;
393} 397}
394 398
395#define CORO_MAGIC_type_cv PERL_MAGIC_ext 399#define CORO_MAGIC_type_cv 26
396#define CORO_MAGIC_type_state PERL_MAGIC_ext 400#define CORO_MAGIC_type_state PERL_MAGIC_ext
397 401
398static MGVTBL coro_cv_vtbl = { 402static MGVTBL coro_cv_vtbl = {
399 0, 0, 0, 0, 403 0, 0, 0, 0,
400 coro_cv_free 404 coro_cv_free
401}; 405};
402 406
407#define CORO_MAGIC_NN(sv, type) \
408 (expect_true (SvMAGIC (sv)->mg_type == type) \
409 ? SvMAGIC (sv) \
410 : mg_find (sv, type))
411
403#define CORO_MAGIC(sv, type) \ 412#define CORO_MAGIC(sv, type) \
404 SvMAGIC (sv) \ 413 (expect_true (SvMAGIC (sv)) \
405 ? SvMAGIC (sv)->mg_type == type \ 414 ? CORO_MAGIC_NN (sv, type) \
406 ? SvMAGIC (sv) \
407 : mg_find (sv, type) \
408 : 0 415 : 0)
409 416
410#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 417#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
411#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 418#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
412 419
413static struct coro * 420INLINE struct coro *
414SvSTATE_ (pTHX_ SV *coro) 421SvSTATE_ (pTHX_ SV *coro)
415{ 422{
416 HV *stash; 423 HV *stash;
417 MAGIC *mg; 424 MAGIC *mg;
418 425
… …
433 mg = CORO_MAGIC_state (coro); 440 mg = CORO_MAGIC_state (coro);
434 return (struct coro *)mg->mg_ptr; 441 return (struct coro *)mg->mg_ptr;
435} 442}
436 443
437#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 444#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
445
446/* faster than SvSTATE, but expects a coroutine hv */
447#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
448#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
438 449
439/* the next two functions merely cache the padlists */ 450/* the next two functions merely cache the padlists */
440static void 451static void
441get_padlist (pTHX_ CV *cv) 452get_padlist (pTHX_ CV *cv)
442{ 453{
… …
448 else 459 else
449 { 460 {
450#if CORO_PREFER_PERL_FUNCTIONS 461#if CORO_PREFER_PERL_FUNCTIONS
451 /* this is probably cleaner? but also slower! */ 462 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */ 463 /* in practise, it seems to be less stable */
453 CV *cp = Perl_cv_clone (cv); 464 CV *cp = Perl_cv_clone (aTHX_ cv);
454 CvPADLIST (cv) = CvPADLIST (cp); 465 CvPADLIST (cv) = CvPADLIST (cp);
455 CvPADLIST (cp) = 0; 466 CvPADLIST (cp) = 0;
456 SvREFCNT_dec (cp); 467 SvREFCNT_dec (cp);
457#else 468#else
458 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 469 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
509 CvPADLIST (cv) = (AV *)POPs; 520 CvPADLIST (cv) = (AV *)POPs;
510 } 521 }
511 522
512 PUTBACK; 523 PUTBACK;
513 } 524 }
525
526 slf_frame = c->slf_frame;
527 CORO_THROW = c->except;
514} 528}
515 529
516static void 530static void
517save_perl (pTHX_ Coro__State c) 531save_perl (pTHX_ Coro__State c)
518{ 532{
533 c->except = CORO_THROW;
534 c->slf_frame = slf_frame;
535
519 { 536 {
520 dSP; 537 dSP;
521 I32 cxix = cxstack_ix; 538 I32 cxix = cxstack_ix;
522 PERL_CONTEXT *ccstk = cxstack; 539 PERL_CONTEXT *ccstk = cxstack;
523 PERL_SI *top_si = PL_curstackinfo; 540 PERL_SI *top_si = PL_curstackinfo;
… …
590 #undef VAR 607 #undef VAR
591 } 608 }
592} 609}
593 610
594/* 611/*
595 * allocate various perl stacks. This is an exact copy 612 * allocate various perl stacks. This is almost an exact copy
596 * of perl.c:init_stacks, except that it uses less memory 613 * of perl.c:init_stacks, except that it uses less memory
597 * on the (sometimes correct) assumption that coroutines do 614 * on the (sometimes correct) assumption that coroutines do
598 * not usually need a lot of stackspace. 615 * not usually need a lot of stackspace.
599 */ 616 */
600#if CORO_PREFER_PERL_FUNCTIONS 617#if CORO_PREFER_PERL_FUNCTIONS
601# define coro_init_stacks init_stacks 618# define coro_init_stacks(thx) init_stacks ()
602#else 619#else
603static void 620static void
604coro_init_stacks (pTHX) 621coro_init_stacks (pTHX)
605{ 622{
606 PL_curstackinfo = new_stackinfo(32, 8); 623 PL_curstackinfo = new_stackinfo(32, 8);
… …
802 819
803 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 820 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
804} 821}
805 822
806static void 823static void
824prepare_nop (pTHX_ struct coro_transfer_args *ta)
825{
826 /* kind of mega-hacky, but works */
827 ta->next = ta->prev = (struct coro *)ta;
828}
829
830static int
831slf_check_nop (pTHX_ struct CoroSLF *frame)
832{
833 return 0;
834}
835
836static UNOP coro_setup_op;
837
838static void NOINLINE /* noinline to keep it out of the transfer fast path */
807coro_setup (pTHX_ struct coro *coro) 839coro_setup (pTHX_ struct coro *coro)
808{ 840{
809 /* 841 /*
810 * emulate part of the perl startup here. 842 * emulate part of the perl startup here.
811 */ 843 */
… …
835 PL_rs = newSVsv (GvSV (irsgv)); 867 PL_rs = newSVsv (GvSV (irsgv));
836 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
837 869
838 { 870 {
839 dSP; 871 dSP;
840 LOGOP myop; 872 UNOP myop;
841 873
842 Zero (&myop, 1, LOGOP); 874 Zero (&myop, 1, UNOP);
843 myop.op_next = Nullop; 875 myop.op_next = Nullop;
876 myop.op_type = OP_ENTERSUB;
844 myop.op_flags = OPf_WANT_VOID; 877 myop.op_flags = OPf_WANT_VOID;
845 878
846 PUSHMARK (SP); 879 PUSHMARK (SP);
847 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 880 PUSHs ((SV *)coro->startcv);
848 PUTBACK; 881 PUTBACK;
849 PL_op = (OP *)&myop; 882 PL_op = (OP *)&myop;
850 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 883 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
851 SPAGAIN;
852 } 884 }
853 885
854 /* this newly created coroutine might be run on an existing cctx which most 886 /* this newly created coroutine might be run on an existing cctx which most
855 * likely was suspended in set_stacklevel, called from entersub. 887 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
856 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
857 * so we ENTER here for symmetry
858 */ 888 */
859 ENTER; 889 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
890 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
891
892 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
893 coro_setup_op.op_next = PL_op;
894 coro_setup_op.op_type = OP_CUSTOM;
895 coro_setup_op.op_ppaddr = pp_slf;
896 /* no flags etc. required, as an init function won't be called */
897
898 PL_op = (OP *)&coro_setup_op;
899
900 /* copy throw, in case it was set before coro_setup */
901 CORO_THROW = coro->except;
860} 902}
861 903
862static void 904static void
863coro_destruct (pTHX_ struct coro *coro) 905coro_destruct (pTHX_ struct coro *coro)
864{ 906{
… …
888 930
889 SvREFCNT_dec (PL_diehook); 931 SvREFCNT_dec (PL_diehook);
890 SvREFCNT_dec (PL_warnhook); 932 SvREFCNT_dec (PL_warnhook);
891 933
892 SvREFCNT_dec (coro->saved_deffh); 934 SvREFCNT_dec (coro->saved_deffh);
893 SvREFCNT_dec (coro->throw); 935 SvREFCNT_dec (coro->rouse_cb);
894 936
895 coro_destruct_stacks (aTHX); 937 coro_destruct_stacks (aTHX);
896} 938}
897 939
898static void 940INLINE void
899free_coro_mortal (pTHX) 941free_coro_mortal (pTHX)
900{ 942{
901 if (expect_true (coro_mortal)) 943 if (expect_true (coro_mortal))
902 { 944 {
903 SvREFCNT_dec (coro_mortal); 945 SvREFCNT_dec (coro_mortal);
… …
908static int 950static int
909runops_trace (pTHX) 951runops_trace (pTHX)
910{ 952{
911 COP *oldcop = 0; 953 COP *oldcop = 0;
912 int oldcxix = -2; 954 int oldcxix = -2;
913 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 955 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
914 coro_cctx *cctx = coro->cctx; 956 coro_cctx *cctx = coro->cctx;
915 957
916 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 958 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
917 { 959 {
918 PERL_ASYNC_CHECK (); 960 PERL_ASYNC_CHECK ();
… …
985 SAVETMPS; 1027 SAVETMPS;
986 EXTEND (SP, 3); 1028 EXTEND (SP, 3);
987 PUSHMARK (SP); 1029 PUSHMARK (SP);
988 PUSHs (&PL_sv_yes); 1030 PUSHs (&PL_sv_yes);
989 PUSHs (fullname); 1031 PUSHs (fullname);
990 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1032 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
991 PUTBACK; 1033 PUTBACK;
992 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1034 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
993 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1035 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
994 SPAGAIN; 1036 SPAGAIN;
995 FREETMPS; 1037 FREETMPS;
… …
1027 1069
1028 TAINT_NOT; 1070 TAINT_NOT;
1029 return 0; 1071 return 0;
1030} 1072}
1031 1073
1032/* inject a fake call to Coro::State::_cctx_init into the execution */ 1074static struct coro_cctx *cctx_ssl_cctx;
1033/* _cctx_init should be careful, as it could be called at almost any time */ 1075static struct CoroSLF cctx_ssl_frame;
1034/* during execution of a perl program */ 1076
1035/* also initialises PL_top_env */ 1077static void
1078slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1079{
1080 ta->prev = (struct coro *)cctx_ssl_cctx;
1081 ta->next = 0;
1082}
1083
1084static int
1085slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1086{
1087 *frame = cctx_ssl_frame;
1088
1089 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1090}
1091
1092/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1036static void NOINLINE 1093static void NOINLINE
1037cctx_prepare (pTHX_ coro_cctx *cctx) 1094cctx_prepare (pTHX_ coro_cctx *cctx)
1038{ 1095{
1039 dSP;
1040 LOGOP myop;
1041
1042 PL_top_env = &PL_start_env; 1096 PL_top_env = &PL_start_env;
1043 1097
1044 if (cctx->flags & CC_TRACE) 1098 if (cctx->flags & CC_TRACE)
1045 PL_runops = runops_trace; 1099 PL_runops = runops_trace;
1046 1100
1047 Zero (&myop, 1, LOGOP); 1101 /* we already must be executing an SLF op, there is no other valid way
1048 myop.op_next = PL_op; 1102 * that can lead to creation of a new cctx */
1049 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1103 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1104 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1050 1105
1051 PUSHMARK (SP); 1106 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1052 EXTEND (SP, 2); 1107 cctx_ssl_cctx = cctx;
1053 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1108 cctx_ssl_frame = slf_frame;
1054 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1055 PUTBACK;
1056 PL_op = (OP *)&myop;
1057 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1058 SPAGAIN;
1059}
1060 1109
1110 slf_frame.prepare = slf_prepare_set_stacklevel;
1111 slf_frame.check = slf_check_set_stacklevel;
1112}
1113
1061/* the tail of transfer: execute stuff we can onyl do afetr a transfer */ 1114/* the tail of transfer: execute stuff we can only do after a transfer */
1062static void 1115INLINE void
1063transfer_tail (void) 1116transfer_tail (pTHX)
1064{ 1117{
1065 UNLOCK; 1118 free_coro_mortal (aTHX);
1066
1067 if (expect_false (next_has_throw))
1068 {
1069 struct coro *coro = SvSTATE (coro_current);
1070
1071 if (coro->throw)
1072 {
1073 SV *exception = coro->throw;
1074 coro->throw = 0;
1075 sv_setsv (ERRSV, exception);
1076 croak (0);
1077 }
1078 }
1079} 1119}
1080 1120
1081/* 1121/*
1082 * this is a _very_ stripped down perl interpreter ;) 1122 * this is a _very_ stripped down perl interpreter ;)
1083 */ 1123 */
… …
1090# endif 1130# endif
1091#endif 1131#endif
1092 { 1132 {
1093 dTHX; 1133 dTHX;
1094 1134
1095 /* we now skip the entersub that lead to transfer () */ 1135 /* normally we would need to skip the entersub here */
1136 /* not doing so will re-execute it, which is exactly what we want */
1096 PL_op = PL_op->op_next; 1137 /* PL_nop = PL_nop->op_next */
1097 1138
1098 /* inject a fake subroutine call to cctx_init */ 1139 /* inject a fake subroutine call to cctx_init */
1099 cctx_prepare (aTHX_ (coro_cctx *)arg); 1140 cctx_prepare (aTHX_ (coro_cctx *)arg);
1100 1141
1101 /* cctx_run is the alternative tail of transfer () */ 1142 /* cctx_run is the alternative tail of transfer() */
1102 transfer_tail (); 1143 transfer_tail (aTHX);
1103 1144
1104 /* somebody or something will hit me for both perl_run and PL_restartop */ 1145 /* somebody or something will hit me for both perl_run and PL_restartop */
1105 PL_restartop = PL_op; 1146 PL_restartop = PL_op;
1106 perl_run (PL_curinterp); 1147 perl_run (PL_curinterp);
1148 /*
1149 * Unfortunately, there is no way to get at the return values of the
1150 * coro body here, as perl_run destroys these
1151 */
1107 1152
1108 /* 1153 /*
1109 * If perl-run returns we assume exit() was being called or the coro 1154 * If perl-run returns we assume exit() was being called or the coro
1110 * fell off the end, which seems to be the only valid (non-bug) 1155 * fell off the end, which seems to be the only valid (non-bug)
1111 * reason for perl_run to return. We try to exit by jumping to the 1156 * reason for perl_run to return. We try to exit by jumping to the
… …
1125 ++cctx_count; 1170 ++cctx_count;
1126 New (0, cctx, 1, coro_cctx); 1171 New (0, cctx, 1, coro_cctx);
1127 1172
1128 cctx->gen = cctx_gen; 1173 cctx->gen = cctx_gen;
1129 cctx->flags = 0; 1174 cctx->flags = 0;
1130 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel */ 1175 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1131 1176
1132 return cctx; 1177 return cctx;
1133} 1178}
1134 1179
1135/* create a new cctx only suitable as source */ 1180/* create a new cctx only suitable as source */
… …
1157 /* mmap supposedly does allocate-on-write for us */ 1202 /* mmap supposedly does allocate-on-write for us */
1158 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1203 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1159 1204
1160 if (cctx->sptr != (void *)-1) 1205 if (cctx->sptr != (void *)-1)
1161 { 1206 {
1162# if CORO_STACKGUARD 1207 #if CORO_STACKGUARD
1163 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1208 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1164# endif 1209 #endif
1165 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1210 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1166 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1211 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1167 cctx->flags |= CC_MAPPED; 1212 cctx->flags |= CC_MAPPED;
1168 } 1213 }
1169 else 1214 else
1170#endif 1215#endif
1171 { 1216 {
1172 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1217 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1173 New (0, cctx->sptr, cctx_stacksize, long); 1218 New (0, cctx->sptr, cctx_stacksize, long);
1174 1219
1175 if (!cctx->sptr) 1220 if (!cctx->sptr)
1176 { 1221 {
1177 perror ("FATAL: unable to allocate stack for coroutine"); 1222 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1178 _exit (EXIT_FAILURE); 1223 _exit (EXIT_FAILURE);
1179 } 1224 }
1180 1225
1181 stack_start = cctx->sptr; 1226 stack_start = cctx->sptr;
1182 stack_size = cctx->ssize; 1227 stack_size = cctx->ssize;
1183 } 1228 }
1184 1229
1185 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1230 #if CORO_USE_VALGRIND
1231 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1232 #endif
1233
1186 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1234 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1187 1235
1188 return cctx; 1236 return cctx;
1189} 1237}
1190 1238
… …
1198 coro_destroy (&cctx->cctx); 1246 coro_destroy (&cctx->cctx);
1199 1247
1200 /* coro_transfer creates new, empty cctx's */ 1248 /* coro_transfer creates new, empty cctx's */
1201 if (cctx->sptr) 1249 if (cctx->sptr)
1202 { 1250 {
1203#if CORO_USE_VALGRIND 1251 #if CORO_USE_VALGRIND
1204 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1252 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1205#endif 1253 #endif
1206 1254
1207#if HAVE_MMAP 1255#if HAVE_MMAP
1208 if (cctx->flags & CC_MAPPED) 1256 if (cctx->flags & CC_MAPPED)
1209 munmap (cctx->sptr, cctx->ssize); 1257 munmap (cctx->sptr, cctx->ssize);
1210 else 1258 else
… …
1237} 1285}
1238 1286
1239static void 1287static void
1240cctx_put (coro_cctx *cctx) 1288cctx_put (coro_cctx *cctx)
1241{ 1289{
1242 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1290 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1243 1291
1244 /* free another cctx if overlimit */ 1292 /* free another cctx if overlimit */
1245 if (expect_false (cctx_idle >= cctx_max_idle)) 1293 if (expect_false (cctx_idle >= cctx_max_idle))
1246 { 1294 {
1247 coro_cctx *first = cctx_first; 1295 coro_cctx *first = cctx_first;
… …
1259/** coroutine switching *****************************************************/ 1307/** coroutine switching *****************************************************/
1260 1308
1261static void 1309static void
1262transfer_check (pTHX_ struct coro *prev, struct coro *next) 1310transfer_check (pTHX_ struct coro *prev, struct coro *next)
1263{ 1311{
1312 /* TODO: throwing up here is considered harmful */
1313
1264 if (expect_true (prev != next)) 1314 if (expect_true (prev != next))
1265 { 1315 {
1266 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1316 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1267 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1317 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1268 1318
1269 if (expect_false (next->flags & CF_RUNNING)) 1319 if (expect_false (next->flags & CF_RUNNING))
1270 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1320 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1271 1321
1272 if (expect_false (next->flags & CF_DESTROYED)) 1322 if (expect_false (next->flags & CF_DESTROYED))
1273 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1323 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1274 1324
1275#if !PERL_VERSION_ATLEAST (5,10,0) 1325#if !PERL_VERSION_ATLEAST (5,10,0)
1276 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1326 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1277 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1327 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1278#endif 1328#endif
1279 } 1329 }
1280} 1330}
1281 1331
1282/* always use the TRANSFER macro */ 1332/* always use the TRANSFER macro */
1283static void NOINLINE 1333static void NOINLINE /* noinline so we have a fixed stackframe */
1284transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1334transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1285{ 1335{
1286 dSTACKLEVEL; 1336 dSTACKLEVEL;
1287 1337
1288 /* sometimes transfer is only called to set idle_sp */ 1338 /* sometimes transfer is only called to set idle_sp */
… …
1303 prev->flags |= CF_RUNNING; 1353 prev->flags |= CF_RUNNING;
1304 } 1354 }
1305 1355
1306 prev->flags &= ~CF_RUNNING; 1356 prev->flags &= ~CF_RUNNING;
1307 next->flags |= CF_RUNNING; 1357 next->flags |= CF_RUNNING;
1308
1309 LOCK;
1310 1358
1311 /* first get rid of the old state */ 1359 /* first get rid of the old state */
1312 save_perl (aTHX_ prev); 1360 save_perl (aTHX_ prev);
1313 1361
1314 if (expect_false (next->flags & CF_NEW)) 1362 if (expect_false (next->flags & CF_NEW))
… …
1321 else 1369 else
1322 load_perl (aTHX_ next); 1370 load_perl (aTHX_ next);
1323 1371
1324 prev__cctx = prev->cctx; 1372 prev__cctx = prev->cctx;
1325 1373
1326 if (prev__cctx->idle_sp == STACKLEVEL) asm volatile("");//D
1327
1328 /* possibly "free" the cctx */ 1374 /* possibly untie and reuse the cctx */
1329 if (expect_true ( 1375 if (expect_true (
1330 prev__cctx->idle_sp == STACKLEVEL 1376 prev__cctx->idle_sp == STACKLEVEL
1331 && !(prev__cctx->flags & CC_TRACE) 1377 && !(prev__cctx->flags & CC_TRACE)
1332 && !force_cctx 1378 && !force_cctx
1333 )) 1379 ))
1334 { 1380 {
1335 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1381 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1336 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1382 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1337 1383
1338 prev->cctx = 0; 1384 prev->cctx = 0;
1339 1385
1340 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1386 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1341 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1387 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1348 1394
1349 ++next->usecount; 1395 ++next->usecount;
1350 1396
1351 if (expect_true (!next->cctx)) 1397 if (expect_true (!next->cctx))
1352 next->cctx = cctx_get (aTHX); 1398 next->cctx = cctx_get (aTHX);
1353
1354 next_has_throw = !!next->throw;
1355 1399
1356 if (expect_false (prev__cctx != next->cctx)) 1400 if (expect_false (prev__cctx != next->cctx))
1357 { 1401 {
1358 prev__cctx->top_env = PL_top_env; 1402 prev__cctx->top_env = PL_top_env;
1359 PL_top_env = next->cctx->top_env; 1403 PL_top_env = next->cctx->top_env;
1360 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1404 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1361 } 1405 }
1362 1406
1363 free_coro_mortal (aTHX);
1364 UNLOCK;
1365
1366 transfer_tail (); 1407 transfer_tail (aTHX);
1367 } 1408 }
1368} 1409}
1369
1370struct transfer_args
1371{
1372 struct coro *prev, *next;
1373};
1374 1410
1375#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1411#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1376#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1412#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1377 1413
1378/** high level stuff ********************************************************/ 1414/** high level stuff ********************************************************/
… …
1380static int 1416static int
1381coro_state_destroy (pTHX_ struct coro *coro) 1417coro_state_destroy (pTHX_ struct coro *coro)
1382{ 1418{
1383 if (coro->flags & CF_DESTROYED) 1419 if (coro->flags & CF_DESTROYED)
1384 return 0; 1420 return 0;
1421
1422 if (coro->on_destroy)
1423 coro->on_destroy (aTHX_ coro);
1385 1424
1386 coro->flags |= CF_DESTROYED; 1425 coro->flags |= CF_DESTROYED;
1387 1426
1388 if (coro->flags & CF_READY) 1427 if (coro->flags & CF_READY)
1389 { 1428 {
1390 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1429 /* reduce nready, as destroying a ready coro effectively unreadies it */
1391 /* alternative: look through all ready queues and remove the coro */ 1430 /* alternative: look through all ready queues and remove the coro */
1392 LOCK;
1393 --coro_nready; 1431 --coro_nready;
1394 UNLOCK;
1395 } 1432 }
1396 else 1433 else
1397 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1398 1435
1399 if (coro->mainstack && coro->mainstack != main_mainstack) 1436 if (coro->mainstack && coro->mainstack != main_mainstack)
1400 { 1437 {
1401 struct coro temp; 1438 struct coro temp;
1402 1439
1403 if (coro->flags & CF_RUNNING) 1440 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1404 croak ("FATAL: tried to destroy currently running coroutine");
1405 1441
1406 save_perl (aTHX_ &temp); 1442 save_perl (aTHX_ &temp);
1407 load_perl (aTHX_ coro); 1443 load_perl (aTHX_ coro);
1408 1444
1409 coro_destruct (aTHX_ coro); 1445 coro_destruct (aTHX_ coro);
… …
1412 1448
1413 coro->slot = 0; 1449 coro->slot = 0;
1414 } 1450 }
1415 1451
1416 cctx_destroy (coro->cctx); 1452 cctx_destroy (coro->cctx);
1453 SvREFCNT_dec (coro->startcv);
1417 SvREFCNT_dec (coro->args); 1454 SvREFCNT_dec (coro->args);
1455 SvREFCNT_dec (CORO_THROW);
1418 1456
1419 if (coro->next) coro->next->prev = coro->prev; 1457 if (coro->next) coro->next->prev = coro->prev;
1420 if (coro->prev) coro->prev->next = coro->next; 1458 if (coro->prev) coro->prev->next = coro->next;
1421 if (coro == coro_first) coro_first = coro->next; 1459 if (coro == coro_first) coro_first = coro->next;
1422 1460
… …
1460# define MGf_DUP 0 1498# define MGf_DUP 0
1461#endif 1499#endif
1462}; 1500};
1463 1501
1464static void 1502static void
1465prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1503prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1466{ 1504{
1467 ta->prev = SvSTATE (prev_sv); 1505 ta->prev = SvSTATE (prev_sv);
1468 ta->next = SvSTATE (next_sv); 1506 ta->next = SvSTATE (next_sv);
1469 TRANSFER_CHECK (*ta); 1507 TRANSFER_CHECK (*ta);
1470} 1508}
1471 1509
1472static void 1510static void
1473api_transfer (SV *prev_sv, SV *next_sv) 1511api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1474{ 1512{
1475 dTHX;
1476 struct transfer_args ta; 1513 struct coro_transfer_args ta;
1477 1514
1478 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1479 TRANSFER (ta, 1); 1516 TRANSFER (ta, 1);
1480} 1517}
1481 1518
1519/*****************************************************************************/
1520/* gensub: simple closure generation utility */
1521
1522#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1523
1524/* create a closure from XS, returns a code reference */
1525/* the arg can be accessed via GENSUB_ARG from the callback */
1526/* the callback must use dXSARGS/XSRETURN */
1527static SV *
1528gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1529{
1530 CV *cv = (CV *)newSV (0);
1531
1532 sv_upgrade ((SV *)cv, SVt_PVCV);
1533
1534 CvANON_on (cv);
1535 CvISXSUB_on (cv);
1536 CvXSUB (cv) = xsub;
1537 GENSUB_ARG = arg;
1538
1539 return newRV_noinc ((SV *)cv);
1540}
1541
1482/** Coro ********************************************************************/ 1542/** Coro ********************************************************************/
1483 1543
1484static void 1544INLINE void
1485coro_enq (pTHX_ SV *coro_sv) 1545coro_enq (pTHX_ struct coro *coro)
1486{ 1546{
1487 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1547 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1488} 1548}
1489 1549
1490static SV * 1550INLINE SV *
1491coro_deq (pTHX) 1551coro_deq (pTHX)
1492{ 1552{
1493 int prio; 1553 int prio;
1494 1554
1495 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1555 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1498 1558
1499 return 0; 1559 return 0;
1500} 1560}
1501 1561
1502static int 1562static int
1503api_ready (SV *coro_sv) 1563api_ready (pTHX_ SV *coro_sv)
1504{ 1564{
1505 dTHX;
1506 struct coro *coro; 1565 struct coro *coro;
1507 SV *sv_hook; 1566 SV *sv_hook;
1508 void (*xs_hook)(void); 1567 void (*xs_hook)(void);
1509 1568
1510 if (SvROK (coro_sv)) 1569 if (SvROK (coro_sv))
… …
1515 if (coro->flags & CF_READY) 1574 if (coro->flags & CF_READY)
1516 return 0; 1575 return 0;
1517 1576
1518 coro->flags |= CF_READY; 1577 coro->flags |= CF_READY;
1519 1578
1520 LOCK;
1521
1522 sv_hook = coro_nready ? 0 : coro_readyhook; 1579 sv_hook = coro_nready ? 0 : coro_readyhook;
1523 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1580 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1524 1581
1525 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1582 coro_enq (aTHX_ coro);
1526 ++coro_nready; 1583 ++coro_nready;
1527 1584
1528 UNLOCK;
1529
1530 if (sv_hook) 1585 if (sv_hook)
1531 { 1586 {
1532 dSP; 1587 dSP;
1533 1588
1534 ENTER; 1589 ENTER;
1535 SAVETMPS; 1590 SAVETMPS;
1536 1591
1537 PUSHMARK (SP); 1592 PUSHMARK (SP);
1538 PUTBACK; 1593 PUTBACK;
1539 call_sv (sv_hook, G_DISCARD); 1594 call_sv (sv_hook, G_VOID | G_DISCARD);
1540 SPAGAIN;
1541 1595
1542 FREETMPS; 1596 FREETMPS;
1543 LEAVE; 1597 LEAVE;
1544 } 1598 }
1545 1599
… …
1548 1602
1549 return 1; 1603 return 1;
1550} 1604}
1551 1605
1552static int 1606static int
1553api_is_ready (SV *coro_sv) 1607api_is_ready (pTHX_ SV *coro_sv)
1554{ 1608{
1555 dTHX;
1556 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1609 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1557} 1610}
1558 1611
1559static void 1612INLINE void
1560prepare_schedule (pTHX_ struct transfer_args *ta) 1613prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1561{ 1614{
1562 SV *prev_sv, *next_sv; 1615 SV *prev_sv, *next_sv;
1563 1616
1564 for (;;) 1617 for (;;)
1565 { 1618 {
1566 LOCK;
1567 next_sv = coro_deq (aTHX); 1619 next_sv = coro_deq (aTHX);
1568 1620
1569 /* nothing to schedule: call the idle handler */ 1621 /* nothing to schedule: call the idle handler */
1570 if (expect_false (!next_sv)) 1622 if (expect_false (!next_sv))
1571 { 1623 {
1572 dSP; 1624 dSP;
1573 UNLOCK;
1574 1625
1575 ENTER; 1626 ENTER;
1576 SAVETMPS; 1627 SAVETMPS;
1577 1628
1578 PUSHMARK (SP); 1629 PUSHMARK (SP);
1579 PUTBACK; 1630 PUTBACK;
1580 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1631 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1581 SPAGAIN;
1582 1632
1583 FREETMPS; 1633 FREETMPS;
1584 LEAVE; 1634 LEAVE;
1585 continue; 1635 continue;
1586 } 1636 }
1587 1637
1588 ta->next = SvSTATE (next_sv); 1638 ta->next = SvSTATE_hv (next_sv);
1589 1639
1590 /* cannot transfer to destroyed coros, skip and look for next */ 1640 /* cannot transfer to destroyed coros, skip and look for next */
1591 if (expect_false (ta->next->flags & CF_DESTROYED)) 1641 if (expect_false (ta->next->flags & CF_DESTROYED))
1592 { 1642 {
1593 UNLOCK;
1594 SvREFCNT_dec (next_sv); 1643 SvREFCNT_dec (next_sv);
1595 /* coro_nready is already taken care of by destroy */ 1644 /* coro_nready has already been taken care of by destroy */
1596 continue; 1645 continue;
1597 } 1646 }
1598 1647
1599 --coro_nready; 1648 --coro_nready;
1600 UNLOCK;
1601 break; 1649 break;
1602 } 1650 }
1603 1651
1604 /* free this only after the transfer */ 1652 /* free this only after the transfer */
1605 prev_sv = SvRV (coro_current); 1653 prev_sv = SvRV (coro_current);
1606 ta->prev = SvSTATE (prev_sv); 1654 ta->prev = SvSTATE_hv (prev_sv);
1607 TRANSFER_CHECK (*ta); 1655 TRANSFER_CHECK (*ta);
1608 assert (ta->next->flags & CF_READY); 1656 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1609 ta->next->flags &= ~CF_READY; 1657 ta->next->flags &= ~CF_READY;
1610 SvRV_set (coro_current, next_sv); 1658 SvRV_set (coro_current, next_sv);
1611 1659
1612 LOCK;
1613 free_coro_mortal (aTHX); 1660 free_coro_mortal (aTHX);
1614 coro_mortal = prev_sv; 1661 coro_mortal = prev_sv;
1615 UNLOCK;
1616} 1662}
1617 1663
1618static void 1664INLINE void
1619prepare_cede (pTHX_ struct transfer_args *ta) 1665prepare_cede (pTHX_ struct coro_transfer_args *ta)
1620{ 1666{
1621 api_ready (coro_current); 1667 api_ready (aTHX_ coro_current);
1622 prepare_schedule (aTHX_ ta); 1668 prepare_schedule (aTHX_ ta);
1623} 1669}
1624 1670
1671INLINE void
1672prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1673{
1674 SV *prev = SvRV (coro_current);
1675
1676 if (coro_nready)
1677 {
1678 prepare_schedule (aTHX_ ta);
1679 api_ready (aTHX_ prev);
1680 }
1681 else
1682 prepare_nop (aTHX_ ta);
1683}
1684
1685static void
1686api_schedule (pTHX)
1687{
1688 struct coro_transfer_args ta;
1689
1690 prepare_schedule (aTHX_ &ta);
1691 TRANSFER (ta, 1);
1692}
1693
1625static int 1694static int
1626prepare_cede_notself (pTHX_ struct transfer_args *ta) 1695api_cede (pTHX)
1627{ 1696{
1628 if (coro_nready) 1697 struct coro_transfer_args ta;
1629 { 1698
1630 SV *prev = SvRV (coro_current);
1631 prepare_schedule (aTHX_ ta); 1699 prepare_cede (aTHX_ &ta);
1632 api_ready (prev); 1700
1701 if (expect_true (ta.prev != ta.next))
1702 {
1703 TRANSFER (ta, 1);
1633 return 1; 1704 return 1;
1634 } 1705 }
1635 else 1706 else
1636 return 0; 1707 return 0;
1637} 1708}
1638 1709
1639static void
1640api_schedule (void)
1641{
1642 dTHX;
1643 struct transfer_args ta;
1644
1645 prepare_schedule (aTHX_ &ta);
1646 TRANSFER (ta, 1);
1647}
1648
1649static int 1710static int
1650api_cede (void) 1711api_cede_notself (pTHX)
1651{ 1712{
1652 dTHX; 1713 if (coro_nready)
1714 {
1653 struct transfer_args ta; 1715 struct coro_transfer_args ta;
1654 1716
1655 prepare_cede (aTHX_ &ta); 1717 prepare_cede_notself (aTHX_ &ta);
1656
1657 if (expect_true (ta.prev != ta.next))
1658 {
1659 TRANSFER (ta, 1); 1718 TRANSFER (ta, 1);
1660 return 1; 1719 return 1;
1661 } 1720 }
1662 else 1721 else
1663 return 0; 1722 return 0;
1664} 1723}
1665 1724
1666static int 1725static void
1667api_cede_notself (void)
1668{
1669 dTHX;
1670 struct transfer_args ta;
1671
1672 if (prepare_cede_notself (aTHX_ &ta))
1673 {
1674 TRANSFER (ta, 1);
1675 return 1;
1676 }
1677 else
1678 return 0;
1679}
1680
1681static void
1682api_trace (SV *coro_sv, int flags) 1726api_trace (pTHX_ SV *coro_sv, int flags)
1683{ 1727{
1684 dTHX;
1685 struct coro *coro = SvSTATE (coro_sv); 1728 struct coro *coro = SvSTATE (coro_sv);
1686 1729
1687 if (flags & CC_TRACE) 1730 if (flags & CC_TRACE)
1688 { 1731 {
1689 if (!coro->cctx) 1732 if (!coro->cctx)
1690 coro->cctx = cctx_new_run (); 1733 coro->cctx = cctx_new_run ();
1691 else if (!(coro->cctx->flags & CC_TRACE)) 1734 else if (!(coro->cctx->flags & CC_TRACE))
1692 croak ("cannot enable tracing on coroutine with custom stack"); 1735 croak ("cannot enable tracing on coroutine with custom stack,");
1693 1736
1694 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1737 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1695 } 1738 }
1696 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1739 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1697 { 1740 {
… …
1702 else 1745 else
1703 coro->slot->runops = RUNOPS_DEFAULT; 1746 coro->slot->runops = RUNOPS_DEFAULT;
1704 } 1747 }
1705} 1748}
1706 1749
1707#if 0 1750/*****************************************************************************/
1751/* rouse callback */
1752
1753#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1754
1755static void
1756coro_rouse_callback (pTHX_ CV *cv)
1757{
1758 dXSARGS;
1759 SV *data = (SV *)GENSUB_ARG;
1760
1761 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1762 {
1763 /* first call, set args */
1764 int i;
1765 AV *av = newAV ();
1766 SV *coro = SvRV (data);
1767
1768 SvRV_set (data, (SV *)av);
1769 api_ready (aTHX_ coro);
1770 SvREFCNT_dec (coro);
1771
1772 /* better take a full copy of the arguments */
1773 while (items--)
1774 av_store (av, items, newSVsv (ST (items)));
1775 }
1776
1777 XSRETURN_EMPTY;
1778}
1779
1708static int 1780static int
1709coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1781slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1710{ 1782{
1711 AV *padlist; 1783 SV *data = (SV *)frame->data;
1712 AV *av = (AV *)mg->mg_obj; 1784
1785 if (CORO_THROW)
1786 return 0;
1713 1787
1714 abort (); 1788 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1789 return 1;
1790
1791 /* now push all results on the stack */
1792 {
1793 dSP;
1794 AV *av = (AV *)SvRV (data);
1795 int i;
1796
1797 EXTEND (SP, AvFILLp (av) + 1);
1798 for (i = 0; i <= AvFILLp (av); ++i)
1799 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1800
1801 /* we have stolen the elements, so ste length to zero and free */
1802 AvFILLp (av) = -1;
1803 av_undef (av);
1804
1805 PUTBACK;
1806 }
1715 1807
1716 return 0; 1808 return 0;
1717} 1809}
1718 1810
1719static MGVTBL coro_gensub_vtbl = { 1811static void
1720 0, 0, 0, 0, 1812slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1721 coro_gensub_free 1813{
1722}; 1814 SV *cb;
1723#endif 1815
1816 if (items)
1817 cb = arg [0];
1818 else
1819 {
1820 struct coro *coro = SvSTATE_current;
1821
1822 if (!coro->rouse_cb)
1823 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1824
1825 cb = sv_2mortal (coro->rouse_cb);
1826 coro->rouse_cb = 0;
1827 }
1828
1829 if (!SvROK (cb)
1830 || SvTYPE (SvRV (cb)) != SVt_PVCV
1831 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1832 croak ("Coro::rouse_wait called with illegal callback argument,");
1833
1834 {
1835 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1836 SV *data = (SV *)GENSUB_ARG;
1837
1838 frame->data = (void *)data;
1839 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1840 frame->check = slf_check_rouse_wait;
1841 }
1842}
1843
1844static SV *
1845coro_new_rouse_cb (pTHX)
1846{
1847 HV *hv = (HV *)SvRV (coro_current);
1848 struct coro *coro = SvSTATE_hv (hv);
1849 SV *data = newRV_inc ((SV *)hv);
1850 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1851
1852 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1853 SvREFCNT_dec (data); /* magicext increases the refcount */
1854
1855 SvREFCNT_dec (coro->rouse_cb);
1856 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1857
1858 return cb;
1859}
1860
1861/*****************************************************************************/
1862/* schedule-like-function opcode (SLF) */
1863
1864static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1865static const CV *slf_cv;
1866static SV **slf_argv;
1867static int slf_argc, slf_arga; /* count, allocated */
1868static I32 slf_ax; /* top of stack, for restore */
1869
1870/* this restores the stack in the case we patched the entersub, to */
1871/* recreate the stack frame as perl will on following calls */
1872/* since entersub cleared the stack */
1873static OP *
1874pp_restore (pTHX)
1875{
1876 int i;
1877 SV **SP = PL_stack_base + slf_ax;
1878
1879 PUSHMARK (SP);
1880
1881 EXTEND (SP, slf_argc + 1);
1882
1883 for (i = 0; i < slf_argc; ++i)
1884 PUSHs (sv_2mortal (slf_argv [i]));
1885
1886 PUSHs ((SV *)CvGV (slf_cv));
1887
1888 RETURNOP (slf_restore.op_first);
1889}
1890
1891static void
1892slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1893{
1894 SV **arg = (SV **)slf_frame.data;
1895
1896 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1897}
1898
1899static void
1900slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1901{
1902 if (items != 2)
1903 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1904
1905 frame->prepare = slf_prepare_transfer;
1906 frame->check = slf_check_nop;
1907 frame->data = (void *)arg; /* let's hope it will stay valid */
1908}
1909
1910static void
1911slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1912{
1913 frame->prepare = prepare_schedule;
1914 frame->check = slf_check_nop;
1915}
1916
1917static void
1918slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1919{
1920 frame->prepare = prepare_cede;
1921 frame->check = slf_check_nop;
1922}
1923
1924static void
1925slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1926{
1927 frame->prepare = prepare_cede_notself;
1928 frame->check = slf_check_nop;
1929}
1930
1931/*
1932 * these not obviously related functions are all rolled into one
1933 * function to increase chances that they all will call transfer with the same
1934 * stack offset
1935 * SLF stands for "schedule-like-function".
1936 */
1937static OP *
1938pp_slf (pTHX)
1939{
1940 I32 checkmark; /* mark SP to see how many elements check has pushed */
1941
1942 /* set up the slf frame, unless it has already been set-up */
1943 /* the latter happens when a new coro has been started */
1944 /* or when a new cctx was attached to an existing coroutine */
1945 if (expect_true (!slf_frame.prepare))
1946 {
1947 /* first iteration */
1948 dSP;
1949 SV **arg = PL_stack_base + TOPMARK + 1;
1950 int items = SP - arg; /* args without function object */
1951 SV *gv = *sp;
1952
1953 /* do a quick consistency check on the "function" object, and if it isn't */
1954 /* for us, divert to the real entersub */
1955 if (SvTYPE (gv) != SVt_PVGV
1956 || !GvCV (gv)
1957 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1958 return PL_ppaddr[OP_ENTERSUB](aTHX);
1959
1960 if (!(PL_op->op_flags & OPf_STACKED))
1961 {
1962 /* ampersand-form of call, use @_ instead of stack */
1963 AV *av = GvAV (PL_defgv);
1964 arg = AvARRAY (av);
1965 items = AvFILLp (av) + 1;
1966 }
1967
1968 /* now call the init function, which needs to set up slf_frame */
1969 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1970 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1971
1972 /* pop args */
1973 SP = PL_stack_base + POPMARK;
1974
1975 PUTBACK;
1976 }
1977
1978 /* now that we have a slf_frame, interpret it! */
1979 /* we use a callback system not to make the code needlessly */
1980 /* complicated, but so we can run multiple perl coros from one cctx */
1981
1982 do
1983 {
1984 struct coro_transfer_args ta;
1985
1986 slf_frame.prepare (aTHX_ &ta);
1987 TRANSFER (ta, 0);
1988
1989 checkmark = PL_stack_sp - PL_stack_base;
1990 }
1991 while (slf_frame.check (aTHX_ &slf_frame));
1992
1993 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1994
1995 /* exception handling */
1996 if (expect_false (CORO_THROW))
1997 {
1998 SV *exception = sv_2mortal (CORO_THROW);
1999
2000 CORO_THROW = 0;
2001 sv_setsv (ERRSV, exception);
2002 croak (0);
2003 }
2004
2005 /* return value handling - mostly like entersub */
2006 /* make sure we put something on the stack in scalar context */
2007 if (GIMME_V == G_SCALAR)
2008 {
2009 dSP;
2010 SV **bot = PL_stack_base + checkmark;
2011
2012 if (sp == bot) /* too few, push undef */
2013 bot [1] = &PL_sv_undef;
2014 else if (sp != bot + 1) /* too many, take last one */
2015 bot [1] = *sp;
2016
2017 SP = bot + 1;
2018
2019 PUTBACK;
2020 }
2021
2022 return NORMAL;
2023}
2024
2025static void
2026api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2027{
2028 int i;
2029 SV **arg = PL_stack_base + ax;
2030 int items = PL_stack_sp - arg + 1;
2031
2032 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2033
2034 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2035 && PL_op->op_ppaddr != pp_slf)
2036 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2037
2038 CvFLAGS (cv) |= CVf_SLF;
2039 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2040 slf_cv = cv;
2041
2042 /* we patch the op, and then re-run the whole call */
2043 /* we have to put the same argument on the stack for this to work */
2044 /* and this will be done by pp_restore */
2045 slf_restore.op_next = (OP *)&slf_restore;
2046 slf_restore.op_type = OP_CUSTOM;
2047 slf_restore.op_ppaddr = pp_restore;
2048 slf_restore.op_first = PL_op;
2049
2050 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2051
2052 if (PL_op->op_flags & OPf_STACKED)
2053 {
2054 if (items > slf_arga)
2055 {
2056 slf_arga = items;
2057 free (slf_argv);
2058 slf_argv = malloc (slf_arga * sizeof (SV *));
2059 }
2060
2061 slf_argc = items;
2062
2063 for (i = 0; i < items; ++i)
2064 slf_argv [i] = SvREFCNT_inc (arg [i]);
2065 }
2066 else
2067 slf_argc = 0;
2068
2069 PL_op->op_ppaddr = pp_slf;
2070 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2071
2072 PL_op = (OP *)&slf_restore;
2073}
1724 2074
1725/*****************************************************************************/ 2075/*****************************************************************************/
1726/* PerlIO::cede */ 2076/* PerlIO::cede */
1727 2077
1728typedef struct 2078typedef struct
… …
1756 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2106 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1757 double now = nvtime (); 2107 double now = nvtime ();
1758 2108
1759 if (now >= self->next) 2109 if (now >= self->next)
1760 { 2110 {
1761 api_cede (); 2111 api_cede (aTHX);
1762 self->next = now + self->every; 2112 self->next = now + self->every;
1763 } 2113 }
1764 2114
1765 return PerlIOBuf_flush (aTHX_ f); 2115 return PerlIOBuf_flush (aTHX_ f);
1766} 2116}
… …
1795 PerlIOBuf_get_ptr, 2145 PerlIOBuf_get_ptr,
1796 PerlIOBuf_get_cnt, 2146 PerlIOBuf_get_cnt,
1797 PerlIOBuf_set_ptrcnt, 2147 PerlIOBuf_set_ptrcnt,
1798}; 2148};
1799 2149
2150/*****************************************************************************/
2151/* Coro::Semaphore & Coro::Signal */
2152
2153static SV *
2154coro_waitarray_new (pTHX_ int count)
2155{
2156 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2157 AV *av = newAV ();
2158 SV **ary;
2159
2160 /* unfortunately, building manually saves memory */
2161 Newx (ary, 2, SV *);
2162 AvALLOC (av) = ary;
2163 /*AvARRAY (av) = ary;*/
2164 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2165 AvMAX (av) = 1;
2166 AvFILLp (av) = 0;
2167 ary [0] = newSViv (count);
2168
2169 return newRV_noinc ((SV *)av);
2170}
2171
2172/* semaphore */
2173
2174static void
2175coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2176{
2177 SV *count_sv = AvARRAY (av)[0];
2178 IV count = SvIVX (count_sv);
2179
2180 count += adjust;
2181 SvIVX (count_sv) = count;
2182
2183 /* now wake up as many waiters as are expected to lock */
2184 while (count > 0 && AvFILLp (av) > 0)
2185 {
2186 SV *cb;
2187
2188 /* swap first two elements so we can shift a waiter */
2189 AvARRAY (av)[0] = AvARRAY (av)[1];
2190 AvARRAY (av)[1] = count_sv;
2191 cb = av_shift (av);
2192
2193 if (SvOBJECT (cb))
2194 {
2195 api_ready (aTHX_ cb);
2196 --count;
2197 }
2198 else if (SvTYPE (cb) == SVt_PVCV)
2199 {
2200 dSP;
2201 PUSHMARK (SP);
2202 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2203 PUTBACK;
2204 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2205 }
2206
2207 SvREFCNT_dec (cb);
2208 }
2209}
2210
2211static void
2212coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2213{
2214 /* call $sem->adjust (0) to possibly wake up some other waiters */
2215 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2216}
2217
2218static int
2219slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2220{
2221 AV *av = (AV *)frame->data;
2222 SV *count_sv = AvARRAY (av)[0];
2223
2224 /* if we are about to throw, don't actually acquire the lock, just throw */
2225 if (CORO_THROW)
2226 return 0;
2227 else if (SvIVX (count_sv) > 0)
2228 {
2229 SvSTATE_current->on_destroy = 0;
2230
2231 if (acquire)
2232 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2233 else
2234 coro_semaphore_adjust (aTHX_ av, 0);
2235
2236 return 0;
2237 }
2238 else
2239 {
2240 int i;
2241 /* if we were woken up but can't down, we look through the whole */
2242 /* waiters list and only add us if we aren't in there already */
2243 /* this avoids some degenerate memory usage cases */
2244
2245 for (i = 1; i <= AvFILLp (av); ++i)
2246 if (AvARRAY (av)[i] == SvRV (coro_current))
2247 return 1;
2248
2249 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2250 return 1;
2251 }
2252}
2253
2254static int
2255slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2256{
2257 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2258}
2259
2260static int
2261slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2262{
2263 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2264}
2265
2266static void
2267slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2268{
2269 AV *av = (AV *)SvRV (arg [0]);
2270
2271 if (SvIVX (AvARRAY (av)[0]) > 0)
2272 {
2273 frame->data = (void *)av;
2274 frame->prepare = prepare_nop;
2275 }
2276 else
2277 {
2278 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2279
2280 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2281 frame->prepare = prepare_schedule;
2282
2283 /* to avoid race conditions when a woken-up coro gets terminated */
2284 /* we arrange for a temporary on_destroy that calls adjust (0) */
2285 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2286 }
2287}
2288
2289static void
2290slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2291{
2292 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2293 frame->check = slf_check_semaphore_down;
2294}
2295
2296static void
2297slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2298{
2299 if (items >= 2)
2300 {
2301 /* callback form */
2302 AV *av = (AV *)SvRV (arg [0]);
2303 CV *cb_cv = coro_sv_2cv (arg [1]);
2304
2305 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2306
2307 if (SvIVX (AvARRAY (av)[0]) > 0)
2308 coro_semaphore_adjust (aTHX_ av, 0);
2309
2310 frame->prepare = prepare_nop;
2311 frame->check = slf_check_nop;
2312 }
2313 else
2314 {
2315 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2316 frame->check = slf_check_semaphore_wait;
2317 }
2318}
2319
2320/* signal */
2321
2322static void
2323coro_signal_wake (pTHX_ AV *av, int count)
2324{
2325 SvIVX (AvARRAY (av)[0]) = 0;
2326
2327 /* now signal count waiters */
2328 while (count > 0 && AvFILLp (av) > 0)
2329 {
2330 SV *cb;
2331
2332 /* swap first two elements so we can shift a waiter */
2333 cb = AvARRAY (av)[0];
2334 AvARRAY (av)[0] = AvARRAY (av)[1];
2335 AvARRAY (av)[1] = cb;
2336
2337 cb = av_shift (av);
2338
2339 api_ready (aTHX_ cb);
2340 sv_setiv (cb, 0); /* signal waiter */
2341 SvREFCNT_dec (cb);
2342
2343 --count;
2344 }
2345}
2346
2347static int
2348slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2349{
2350 /* if we are about to throw, also stop waiting */
2351 return SvROK ((SV *)frame->data) && !CORO_THROW;
2352}
2353
2354static void
2355slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2356{
2357 AV *av = (AV *)SvRV (arg [0]);
2358
2359 if (SvIVX (AvARRAY (av)[0]))
2360 {
2361 SvIVX (AvARRAY (av)[0]) = 0;
2362 frame->prepare = prepare_nop;
2363 frame->check = slf_check_nop;
2364 }
2365 else
2366 {
2367 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2368
2369 av_push (av, waiter);
2370
2371 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2372 frame->prepare = prepare_schedule;
2373 frame->check = slf_check_signal_wait;
2374 }
2375}
2376
2377/*****************************************************************************/
2378/* Coro::AIO */
2379
2380#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2381
2382/* helper storage struct */
2383struct io_state
2384{
2385 int errorno;
2386 I32 laststype; /* U16 in 5.10.0 */
2387 int laststatval;
2388 Stat_t statcache;
2389};
2390
2391static void
2392coro_aio_callback (pTHX_ CV *cv)
2393{
2394 dXSARGS;
2395 AV *state = (AV *)GENSUB_ARG;
2396 SV *coro = av_pop (state);
2397 SV *data_sv = newSV (sizeof (struct io_state));
2398
2399 av_extend (state, items);
2400
2401 sv_upgrade (data_sv, SVt_PV);
2402 SvCUR_set (data_sv, sizeof (struct io_state));
2403 SvPOK_only (data_sv);
2404
2405 {
2406 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2407
2408 data->errorno = errno;
2409 data->laststype = PL_laststype;
2410 data->laststatval = PL_laststatval;
2411 data->statcache = PL_statcache;
2412 }
2413
2414 /* now build the result vector out of all the parameters and the data_sv */
2415 {
2416 int i;
2417
2418 for (i = 0; i < items; ++i)
2419 av_push (state, SvREFCNT_inc_NN (ST (i)));
2420 }
2421
2422 av_push (state, data_sv);
2423
2424 api_ready (aTHX_ coro);
2425 SvREFCNT_dec (coro);
2426 SvREFCNT_dec ((AV *)state);
2427}
2428
2429static int
2430slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2431{
2432 AV *state = (AV *)frame->data;
2433
2434 /* if we are about to throw, return early */
2435 /* this does not cancel the aio request, but at least */
2436 /* it quickly returns */
2437 if (CORO_THROW)
2438 return 0;
2439
2440 /* one element that is an RV? repeat! */
2441 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2442 return 1;
2443
2444 /* restore status */
2445 {
2446 SV *data_sv = av_pop (state);
2447 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2448
2449 errno = data->errorno;
2450 PL_laststype = data->laststype;
2451 PL_laststatval = data->laststatval;
2452 PL_statcache = data->statcache;
2453
2454 SvREFCNT_dec (data_sv);
2455 }
2456
2457 /* push result values */
2458 {
2459 dSP;
2460 int i;
2461
2462 EXTEND (SP, AvFILLp (state) + 1);
2463 for (i = 0; i <= AvFILLp (state); ++i)
2464 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2465
2466 PUTBACK;
2467 }
2468
2469 return 0;
2470}
2471
2472static void
2473slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2474{
2475 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2476 SV *coro_hv = SvRV (coro_current);
2477 struct coro *coro = SvSTATE_hv (coro_hv);
2478
2479 /* put our coroutine id on the state arg */
2480 av_push (state, SvREFCNT_inc_NN (coro_hv));
2481
2482 /* first see whether we have a non-zero priority and set it as AIO prio */
2483 if (coro->prio)
2484 {
2485 dSP;
2486
2487 static SV *prio_cv;
2488 static SV *prio_sv;
2489
2490 if (expect_false (!prio_cv))
2491 {
2492 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2493 prio_sv = newSViv (0);
2494 }
2495
2496 PUSHMARK (SP);
2497 sv_setiv (prio_sv, coro->prio);
2498 XPUSHs (prio_sv);
2499
2500 PUTBACK;
2501 call_sv (prio_cv, G_VOID | G_DISCARD);
2502 }
2503
2504 /* now call the original request */
2505 {
2506 dSP;
2507 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2508 int i;
2509
2510 PUSHMARK (SP);
2511
2512 /* first push all args to the stack */
2513 EXTEND (SP, items + 1);
2514
2515 for (i = 0; i < items; ++i)
2516 PUSHs (arg [i]);
2517
2518 /* now push the callback closure */
2519 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2520
2521 /* now call the AIO function - we assume our request is uncancelable */
2522 PUTBACK;
2523 call_sv ((SV *)req, G_VOID | G_DISCARD);
2524 }
2525
2526 /* now that the requets is going, we loop toll we have a result */
2527 frame->data = (void *)state;
2528 frame->prepare = prepare_schedule;
2529 frame->check = slf_check_aio_req;
2530}
2531
2532static void
2533coro_aio_req_xs (pTHX_ CV *cv)
2534{
2535 dXSARGS;
2536
2537 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2538
2539 XSRETURN_EMPTY;
2540}
2541
2542/*****************************************************************************/
1800 2543
1801MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2544MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1802 2545
1803PROTOTYPES: DISABLE 2546PROTOTYPES: DISABLE
1804 2547
1805BOOT: 2548BOOT:
1806{ 2549{
1807#ifdef USE_ITHREADS 2550#ifdef USE_ITHREADS
1808 MUTEX_INIT (&coro_lock);
1809# if CORO_PTHREAD 2551# if CORO_PTHREAD
1810 coro_thx = PERL_GET_CONTEXT; 2552 coro_thx = PERL_GET_CONTEXT;
1811# endif 2553# endif
1812#endif 2554#endif
1813 BOOT_PAGESIZE; 2555 BOOT_PAGESIZE;
… …
1834 main_top_env = PL_top_env; 2576 main_top_env = PL_top_env;
1835 2577
1836 while (main_top_env->je_prev) 2578 while (main_top_env->je_prev)
1837 main_top_env = main_top_env->je_prev; 2579 main_top_env = main_top_env->je_prev;
1838 2580
2581 {
2582 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2583
2584 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2585 hv_store_ent (PL_custom_op_names, slf,
2586 newSVpv ("coro_slf", 0), 0);
2587
2588 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2589 hv_store_ent (PL_custom_op_descs, slf,
2590 newSVpv ("coro schedule like function", 0), 0);
2591 }
2592
1839 coroapi.ver = CORO_API_VERSION; 2593 coroapi.ver = CORO_API_VERSION;
1840 coroapi.rev = CORO_API_REVISION; 2594 coroapi.rev = CORO_API_REVISION;
2595
1841 coroapi.transfer = api_transfer; 2596 coroapi.transfer = api_transfer;
2597
2598 coroapi.sv_state = SvSTATE_;
2599 coroapi.execute_slf = api_execute_slf;
2600 coroapi.prepare_nop = prepare_nop;
2601 coroapi.prepare_schedule = prepare_schedule;
2602 coroapi.prepare_cede = prepare_cede;
2603 coroapi.prepare_cede_notself = prepare_cede_notself;
1842 2604
1843 { 2605 {
1844 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2606 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1845 2607
1846 if (!svp) croak ("Time::HiRes is required"); 2608 if (!svp) croak ("Time::HiRes is required");
… …
1857 CODE: 2619 CODE:
1858{ 2620{
1859 struct coro *coro; 2621 struct coro *coro;
1860 MAGIC *mg; 2622 MAGIC *mg;
1861 HV *hv; 2623 HV *hv;
2624 CV *cb;
1862 int i; 2625 int i;
2626
2627 if (items > 1)
2628 {
2629 cb = coro_sv_2cv (ST (1));
2630
2631 if (CvISXSUB (cb))
2632 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2633
2634 if (!CvROOT (cb))
2635 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2636 }
1863 2637
1864 Newz (0, coro, 1, struct coro); 2638 Newz (0, coro, 1, struct coro);
1865 coro->args = newAV (); 2639 coro->args = newAV ();
1866 coro->flags = CF_NEW; 2640 coro->flags = CF_NEW;
1867 2641
… …
1872 coro->hv = hv = newHV (); 2646 coro->hv = hv = newHV ();
1873 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2647 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1874 mg->mg_flags |= MGf_DUP; 2648 mg->mg_flags |= MGf_DUP;
1875 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2649 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1876 2650
2651 if (items > 1)
2652 {
2653 coro->startcv = SvREFCNT_inc_NN (cb);
2654
1877 av_extend (coro->args, items - 1); 2655 av_extend (coro->args, items - 1);
1878 for (i = 1; i < items; i++) 2656 for (i = 2; i < items; i++)
1879 av_push (coro->args, newSVsv (ST (i))); 2657 av_push (coro->args, newSVsv (ST (i)));
2658 }
1880} 2659}
1881 OUTPUT: 2660 OUTPUT:
1882 RETVAL 2661 RETVAL
1883 2662
1884# these not obviously related functions are all rolled into the same xs
1885# function to increase chances that they all will call transfer with the same
1886# stack offset
1887void 2663void
1888_set_stacklevel (...) 2664transfer (...)
1889 ALIAS: 2665 PROTOTYPE: $$
1890 Coro::State::transfer = 1 2666 CODE:
1891 Coro::schedule = 2 2667 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1892 Coro::cede = 3
1893 Coro::cede_notself = 4
1894 CODE:
1895{
1896 struct transfer_args ta;
1897
1898 PUTBACK;
1899 switch (ix)
1900 {
1901 case 0:
1902 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1903 ta.next = 0;
1904 break;
1905
1906 case 1:
1907 if (items != 2)
1908 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1909
1910 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1911 break;
1912
1913 case 2:
1914 prepare_schedule (aTHX_ &ta);
1915 break;
1916
1917 case 3:
1918 prepare_cede (aTHX_ &ta);
1919 break;
1920
1921 case 4:
1922 if (!prepare_cede_notself (aTHX_ &ta))
1923 XSRETURN_EMPTY;
1924
1925 break;
1926 }
1927 SPAGAIN;
1928
1929 BARRIER;
1930 PUTBACK;
1931 TRANSFER (ta, 0);
1932 SPAGAIN; /* might be the sp of a different coroutine now */
1933 /* be extra careful not to ever do anything after TRANSFER */
1934}
1935 2668
1936bool 2669bool
1937_destroy (SV *coro_sv) 2670_destroy (SV *coro_sv)
1938 CODE: 2671 CODE:
1939 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2672 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1946 CODE: 2679 CODE:
1947 _exit (code); 2680 _exit (code);
1948 2681
1949int 2682int
1950cctx_stacksize (int new_stacksize = 0) 2683cctx_stacksize (int new_stacksize = 0)
2684 PROTOTYPE: ;$
1951 CODE: 2685 CODE:
1952 RETVAL = cctx_stacksize; 2686 RETVAL = cctx_stacksize;
1953 if (new_stacksize) 2687 if (new_stacksize)
1954 { 2688 {
1955 cctx_stacksize = new_stacksize; 2689 cctx_stacksize = new_stacksize;
… …
1958 OUTPUT: 2692 OUTPUT:
1959 RETVAL 2693 RETVAL
1960 2694
1961int 2695int
1962cctx_max_idle (int max_idle = 0) 2696cctx_max_idle (int max_idle = 0)
2697 PROTOTYPE: ;$
1963 CODE: 2698 CODE:
1964 RETVAL = cctx_max_idle; 2699 RETVAL = cctx_max_idle;
1965 if (max_idle > 1) 2700 if (max_idle > 1)
1966 cctx_max_idle = max_idle; 2701 cctx_max_idle = max_idle;
1967 OUTPUT: 2702 OUTPUT:
1968 RETVAL 2703 RETVAL
1969 2704
1970int 2705int
1971cctx_count () 2706cctx_count ()
2707 PROTOTYPE:
1972 CODE: 2708 CODE:
1973 RETVAL = cctx_count; 2709 RETVAL = cctx_count;
1974 OUTPUT: 2710 OUTPUT:
1975 RETVAL 2711 RETVAL
1976 2712
1977int 2713int
1978cctx_idle () 2714cctx_idle ()
2715 PROTOTYPE:
1979 CODE: 2716 CODE:
1980 RETVAL = cctx_idle; 2717 RETVAL = cctx_idle;
1981 OUTPUT: 2718 OUTPUT:
1982 RETVAL 2719 RETVAL
1983 2720
1984void 2721void
1985list () 2722list ()
2723 PROTOTYPE:
1986 PPCODE: 2724 PPCODE:
1987{ 2725{
1988 struct coro *coro; 2726 struct coro *coro;
1989 for (coro = coro_first; coro; coro = coro->next) 2727 for (coro = coro_first; coro; coro = coro->next)
1990 if (coro->hv) 2728 if (coro->hv)
… …
2049 RETVAL = boolSV (coro->flags & ix); 2787 RETVAL = boolSV (coro->flags & ix);
2050 OUTPUT: 2788 OUTPUT:
2051 RETVAL 2789 RETVAL
2052 2790
2053void 2791void
2792throw (Coro::State self, SV *throw = &PL_sv_undef)
2793 PROTOTYPE: $;$
2794 CODE:
2795{
2796 struct coro *current = SvSTATE_current;
2797 SV **throwp = self == current ? &CORO_THROW : &self->except;
2798 SvREFCNT_dec (*throwp);
2799 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2800}
2801
2802void
2054api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2803api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2804 PROTOTYPE: $;$
2805 C_ARGS: aTHX_ coro, flags
2055 2806
2056SV * 2807SV *
2057has_cctx (Coro::State coro) 2808has_cctx (Coro::State coro)
2058 PROTOTYPE: $ 2809 PROTOTYPE: $
2059 CODE: 2810 CODE:
… …
2083 OUTPUT: 2834 OUTPUT:
2084 RETVAL 2835 RETVAL
2085 2836
2086void 2837void
2087force_cctx () 2838force_cctx ()
2839 PROTOTYPE:
2088 CODE: 2840 CODE:
2089 struct coro *coro = SvSTATE (coro_current);
2090 coro->cctx->idle_sp = 0; 2841 SvSTATE_current->cctx->idle_sp = 0;
2091 2842
2092void 2843void
2093swap_defsv (Coro::State self) 2844swap_defsv (Coro::State self)
2094 PROTOTYPE: $ 2845 PROTOTYPE: $
2095 ALIAS: 2846 ALIAS:
2096 swap_defav = 1 2847 swap_defav = 1
2097 CODE: 2848 CODE:
2098 if (!self->slot) 2849 if (!self->slot)
2099 croak ("cannot swap state with coroutine that has no saved state"); 2850 croak ("cannot swap state with coroutine that has no saved state,");
2100 else 2851 else
2101 { 2852 {
2102 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2853 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2103 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2854 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2104 2855
2105 SV *tmp = *src; *src = *dst; *dst = tmp; 2856 SV *tmp = *src; *src = *dst; *dst = tmp;
2106 } 2857 }
2858
2107 2859
2108MODULE = Coro::State PACKAGE = Coro 2860MODULE = Coro::State PACKAGE = Coro
2109 2861
2110BOOT: 2862BOOT:
2111{ 2863{
… …
2129 2881
2130 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2882 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2131 coro_ready[i] = newAV (); 2883 coro_ready[i] = newAV ();
2132 2884
2133 { 2885 {
2134 SV *sv = perl_get_sv ("Coro::API", TRUE); 2886 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2135 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2136 2887
2137 coroapi.schedule = api_schedule; 2888 coroapi.schedule = api_schedule;
2138 coroapi.cede = api_cede; 2889 coroapi.cede = api_cede;
2139 coroapi.cede_notself = api_cede_notself; 2890 coroapi.cede_notself = api_cede_notself;
2140 coroapi.ready = api_ready; 2891 coroapi.ready = api_ready;
2141 coroapi.is_ready = api_is_ready; 2892 coroapi.is_ready = api_is_ready;
2142 coroapi.nready = &coro_nready; 2893 coroapi.nready = coro_nready;
2143 coroapi.current = coro_current; 2894 coroapi.current = coro_current;
2144 2895
2145 GCoroAPI = &coroapi; 2896 /*GCoroAPI = &coroapi;*/
2146 sv_setiv (sv, (IV)&coroapi); 2897 sv_setiv (sv, (IV)&coroapi);
2147 SvREADONLY_on (sv); 2898 SvREADONLY_on (sv);
2148 } 2899 }
2149} 2900}
2901
2902void
2903schedule (...)
2904 CODE:
2905 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2906
2907void
2908cede (...)
2909 CODE:
2910 CORO_EXECUTE_SLF_XS (slf_init_cede);
2911
2912void
2913cede_notself (...)
2914 CODE:
2915 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2150 2916
2151void 2917void
2152_set_current (SV *current) 2918_set_current (SV *current)
2153 PROTOTYPE: $ 2919 PROTOTYPE: $
2154 CODE: 2920 CODE:
… …
2157 2923
2158void 2924void
2159_set_readyhook (SV *hook) 2925_set_readyhook (SV *hook)
2160 PROTOTYPE: $ 2926 PROTOTYPE: $
2161 CODE: 2927 CODE:
2162 LOCK;
2163 SvREFCNT_dec (coro_readyhook); 2928 SvREFCNT_dec (coro_readyhook);
2164 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2929 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2165 UNLOCK;
2166 2930
2167int 2931int
2168prio (Coro::State coro, int newprio = 0) 2932prio (Coro::State coro, int newprio = 0)
2933 PROTOTYPE: $;$
2169 ALIAS: 2934 ALIAS:
2170 nice = 1 2935 nice = 1
2171 CODE: 2936 CODE:
2172{ 2937{
2173 RETVAL = coro->prio; 2938 RETVAL = coro->prio;
… …
2188 2953
2189SV * 2954SV *
2190ready (SV *self) 2955ready (SV *self)
2191 PROTOTYPE: $ 2956 PROTOTYPE: $
2192 CODE: 2957 CODE:
2193 RETVAL = boolSV (api_ready (self)); 2958 RETVAL = boolSV (api_ready (aTHX_ self));
2194 OUTPUT: 2959 OUTPUT:
2195 RETVAL 2960 RETVAL
2196 2961
2197int 2962int
2198nready (...) 2963nready (...)
… …
2200 CODE: 2965 CODE:
2201 RETVAL = coro_nready; 2966 RETVAL = coro_nready;
2202 OUTPUT: 2967 OUTPUT:
2203 RETVAL 2968 RETVAL
2204 2969
2205void
2206throw (Coro::State self, SV *throw = &PL_sv_undef)
2207 PROTOTYPE: $;$
2208 CODE:
2209 SvREFCNT_dec (self->throw);
2210 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2211
2212# for async_pool speedup 2970# for async_pool speedup
2213void 2971void
2214_pool_1 (SV *cb) 2972_pool_1 (SV *cb)
2215 CODE: 2973 CODE:
2216{ 2974{
2217 struct coro *coro = SvSTATE (coro_current);
2218 HV *hv = (HV *)SvRV (coro_current); 2975 HV *hv = (HV *)SvRV (coro_current);
2976 struct coro *coro = SvSTATE_hv ((SV *)hv);
2219 AV *defav = GvAV (PL_defgv); 2977 AV *defav = GvAV (PL_defgv);
2220 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2978 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2221 AV *invoke_av; 2979 AV *invoke_av;
2222 int i, len; 2980 int i, len;
2223 2981
… …
2244 { 3002 {
2245 av_fill (defav, len - 1); 3003 av_fill (defav, len - 1);
2246 for (i = 0; i < len; ++i) 3004 for (i = 0; i < len; ++i)
2247 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3005 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2248 } 3006 }
2249
2250 SvREFCNT_dec (invoke);
2251} 3007}
2252 3008
2253void 3009void
2254_pool_2 (SV *cb) 3010_pool_2 (SV *cb)
2255 CODE: 3011 CODE:
2256{ 3012{
2257 struct coro *coro = SvSTATE (coro_current); 3013 HV *hv = (HV *)SvRV (coro_current);
3014 struct coro *coro = SvSTATE_hv ((SV *)hv);
2258 3015
2259 sv_setsv (cb, &PL_sv_undef); 3016 sv_setsv (cb, &PL_sv_undef);
2260 3017
2261 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3018 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2262 coro->saved_deffh = 0; 3019 coro->saved_deffh = 0;
… …
2269 SvREFCNT_dec (old); 3026 SvREFCNT_dec (old);
2270 croak ("\3async_pool terminate\2\n"); 3027 croak ("\3async_pool terminate\2\n");
2271 } 3028 }
2272 3029
2273 av_clear (GvAV (PL_defgv)); 3030 av_clear (GvAV (PL_defgv));
2274 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 3031 hv_store (hv, "desc", sizeof ("desc") - 1,
2275 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 3032 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2276 3033
2277 coro->prio = 0; 3034 coro->prio = 0;
2278 3035
2279 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3036 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2280 api_trace (coro_current, 0); 3037 api_trace (aTHX_ coro_current, 0);
2281 3038
2282 av_push (av_async_pool, newSVsv (coro_current)); 3039 av_push (av_async_pool, newSVsv (coro_current));
2283} 3040}
2284 3041
2285#if 0
2286
2287void
2288_generator_call (...)
2289 PROTOTYPE: @
2290 PPCODE:
2291 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2292 xxxx
2293 abort ();
2294
2295SV * 3042SV *
2296gensub (SV *sub, ...) 3043rouse_cb ()
2297 PROTOTYPE: &;@ 3044 PROTOTYPE:
2298 CODE: 3045 CODE:
2299{ 3046 RETVAL = coro_new_rouse_cb (aTHX);
2300 struct coro *coro;
2301 MAGIC *mg;
2302 CV *xcv;
2303 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2304 int i;
2305
2306 CvGV (ncv) = CvGV (cv);
2307 CvFILE (ncv) = CvFILE (cv);
2308
2309 Newz (0, coro, 1, struct coro);
2310 coro->args = newAV ();
2311 coro->flags = CF_NEW;
2312
2313 av_extend (coro->args, items - 1);
2314 for (i = 1; i < items; i++)
2315 av_push (coro->args, newSVsv (ST (i)));
2316
2317 CvISXSUB_on (ncv);
2318 CvXSUBANY (ncv).any_ptr = (void *)coro;
2319
2320 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2321
2322 CvXSUB (ncv) = CvXSUB (xcv);
2323 CvANON_on (ncv);
2324
2325 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2326 RETVAL = newRV_noinc ((SV *)ncv);
2327}
2328 OUTPUT: 3047 OUTPUT:
2329 RETVAL 3048 RETVAL
2330 3049
2331#endif
2332
2333
2334MODULE = Coro::State PACKAGE = Coro::AIO
2335
2336void 3050void
2337_get_state (SV *self) 3051rouse_wait (...)
3052 PROTOTYPE: ;$
2338 PPCODE: 3053 PPCODE:
2339{ 3054 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2340 AV *defav = GvAV (PL_defgv);
2341 AV *av = newAV ();
2342 int i;
2343 SV *data_sv = newSV (sizeof (struct io_state));
2344 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2345 SvCUR_set (data_sv, sizeof (struct io_state));
2346 SvPOK_only (data_sv);
2347 3055
2348 data->errorno = errno;
2349 data->laststype = PL_laststype;
2350 data->laststatval = PL_laststatval;
2351 data->statcache = PL_statcache;
2352 3056
2353 av_extend (av, AvFILLp (defav) + 1 + 1); 3057MODULE = Coro::State PACKAGE = PerlIO::cede
2354 3058
2355 for (i = 0; i <= AvFILLp (defav); ++i) 3059BOOT:
2356 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3060 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2357 3061
2358 av_push (av, data_sv);
2359 3062
2360 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3063MODULE = Coro::State PACKAGE = Coro::Semaphore
2361 3064
2362 api_ready (self); 3065SV *
2363} 3066new (SV *klass, SV *count = 0)
3067 CODE:
3068 RETVAL = sv_bless (
3069 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3070 GvSTASH (CvGV (cv))
3071 );
3072 OUTPUT:
3073 RETVAL
3074
3075# helper for Coro::Channel
3076SV *
3077_alloc (int count)
3078 CODE:
3079 RETVAL = coro_waitarray_new (aTHX_ count);
3080 OUTPUT:
3081 RETVAL
3082
3083SV *
3084count (SV *self)
3085 CODE:
3086 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3087 OUTPUT:
3088 RETVAL
2364 3089
2365void 3090void
2366_set_state (SV *state) 3091up (SV *self, int adjust = 1)
2367 PROTOTYPE: $ 3092 ALIAS:
3093 adjust = 1
3094 CODE:
3095 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3096
3097void
3098down (...)
3099 CODE:
3100 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3101
3102void
3103wait (...)
3104 CODE:
3105 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3106
3107void
3108try (SV *self)
3109 PPCODE:
3110{
3111 AV *av = (AV *)SvRV (self);
3112 SV *count_sv = AvARRAY (av)[0];
3113 IV count = SvIVX (count_sv);
3114
3115 if (count > 0)
3116 {
3117 --count;
3118 SvIVX (count_sv) = count;
3119 XSRETURN_YES;
3120 }
3121 else
3122 XSRETURN_NO;
3123}
3124
3125void
3126waiters (SV *self)
3127 PPCODE:
3128{
3129 AV *av = (AV *)SvRV (self);
3130 int wcount = AvFILLp (av) + 1 - 1;
3131
3132 if (GIMME_V == G_SCALAR)
3133 XPUSHs (sv_2mortal (newSViv (wcount)));
3134 else
3135 {
3136 int i;
3137 EXTEND (SP, wcount);
3138 for (i = 1; i <= wcount; ++i)
3139 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3140 }
3141}
3142
3143MODULE = Coro::State PACKAGE = Coro::Signal
3144
3145SV *
3146new (SV *klass)
2368 PPCODE: 3147 CODE:
3148 RETVAL = sv_bless (
3149 coro_waitarray_new (aTHX_ 0),
3150 GvSTASH (CvGV (cv))
3151 );
3152 OUTPUT:
3153 RETVAL
3154
3155void
3156wait (...)
3157 CODE:
3158 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3159
3160void
3161broadcast (SV *self)
3162 CODE:
2369{ 3163{
2370 AV *av = (AV *)SvRV (state); 3164 AV *av = (AV *)SvRV (self);
2371 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3165 coro_signal_wake (aTHX_ av, AvFILLp (av));
2372 int i; 3166}
2373 3167
2374 errno = data->errorno; 3168void
2375 PL_laststype = data->laststype; 3169send (SV *self)
2376 PL_laststatval = data->laststatval; 3170 CODE:
2377 PL_statcache = data->statcache; 3171{
3172 AV *av = (AV *)SvRV (self);
2378 3173
2379 EXTEND (SP, AvFILLp (av)); 3174 if (AvFILLp (av))
2380 for (i = 0; i < AvFILLp (av); ++i) 3175 coro_signal_wake (aTHX_ av, 1);
2381 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3176 else
3177 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2382} 3178}
3179
3180IV
3181awaited (SV *self)
3182 CODE:
3183 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3184 OUTPUT:
3185 RETVAL
2383 3186
2384 3187
2385MODULE = Coro::State PACKAGE = Coro::AnyEvent 3188MODULE = Coro::State PACKAGE = Coro::AnyEvent
2386 3189
2387BOOT: 3190BOOT:
2388 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3191 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2389 3192
2390SV * 3193void
2391_schedule (...) 3194_schedule (...)
2392 PROTOTYPE: @
2393 CODE: 3195 CODE:
2394{ 3196{
2395 static int incede; 3197 static int incede;
2396 3198
2397 api_cede_notself (); 3199 api_cede_notself (aTHX);
2398 3200
2399 ++incede; 3201 ++incede;
2400 while (coro_nready >= incede && api_cede ()) 3202 while (coro_nready >= incede && api_cede (aTHX))
2401 ; 3203 ;
2402 3204
2403 sv_setsv (sv_activity, &PL_sv_undef); 3205 sv_setsv (sv_activity, &PL_sv_undef);
2404 if (coro_nready >= incede) 3206 if (coro_nready >= incede)
2405 { 3207 {
2406 PUSHMARK (SP); 3208 PUSHMARK (SP);
2407 PUTBACK; 3209 PUTBACK;
2408 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3210 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2409 SPAGAIN;
2410 } 3211 }
2411 3212
2412 --incede; 3213 --incede;
2413} 3214}
2414 3215
2415 3216
2416MODULE = Coro::State PACKAGE = PerlIO::cede 3217MODULE = Coro::State PACKAGE = Coro::AIO
2417 3218
2418BOOT: 3219void
2419 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3220_register (char *target, char *proto, SV *req)
3221 CODE:
3222{
3223 CV *req_cv = coro_sv_2cv (req);
3224 /* newXSproto doesn't return the CV on 5.8 */
3225 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3226 sv_setpv ((SV *)slf_cv, proto);
3227 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3228}
3229

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