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Comparing Coro/Coro/State.xs (file contents):
Revision 1.254 by root, Fri Nov 7 20:27:47 2008 UTC vs.
Revision 1.324 by root, Sat Nov 22 07:02:28 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
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) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
64 61
65#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr 63# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
68# endif 65# endif
… …
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#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
103 109
104/* 5.8.7 */ 110/* 5.8.7 */
105#ifndef SvRV_set 111#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v) 112# define SvRV_set(s,v) SvRV(s) = (v)
107#endif 113#endif
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 125# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 126#endif
121 127
122/* The next macros try to return the current stack pointer, in an as 128/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
124#define dSTACKLEVEL volatile char stacklevel 134# define dSTACKLEVEL volatile void *stacklevel
125#define STACKLEVEL ((void *)&stacklevel) 135# define STACKLEVEL ((void *)&stacklevel)
136#endif
126 137
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 138#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 139
129#if __GNUC__ >= 3 140#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 141# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
133#else 144#else
134# define attribute(x) 145# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 146# define expect(expr,value) (expr)
147# define INLINE static
137#endif 148#endif
138 149
139#define expect_false(expr) expect ((expr) != 0, 0) 150#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 151#define expect_true(expr) expect ((expr) != 0, 1)
141 152
142#define NOINLINE attribute ((noinline)) 153#define NOINLINE attribute ((noinline))
143 154
144#include "CoroAPI.h" 155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
145 157
146#ifdef USE_ITHREADS 158#ifdef USE_ITHREADS
147static perl_mutex coro_lock; 159# if CORO_PTHREAD
148# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0) 160static void *coro_thx;
149# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
150#else
151# define LOCK (void)0
152# define UNLOCK (void)0
153#endif 161# endif
154 162#endif
155/* helper storage struct for Coro::AIO */
156struct io_state
157{
158 AV *res;
159 int errorno;
160 I32 laststype;
161 int laststatval;
162 Stat_t statcache;
163};
164 163
165static double (*nvtime)(); /* so why doesn't it take void? */ 164static double (*nvtime)(); /* so why doesn't it take void? */
165
166/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX);
166 169
167static U32 cctx_gen; 170static U32 cctx_gen;
168static size_t cctx_stacksize = CORO_STACKSIZE; 171static size_t cctx_stacksize = CORO_STACKSIZE;
169static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
170static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
171static JMPENV *main_top_env; 174static JMPENV *main_top_env;
172static HV *coro_state_stash, *coro_stash; 175static HV *coro_state_stash, *coro_stash;
173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
174 177
178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180
175static GV *irsgv; /* $/ */ 181static GV *irsgv; /* $/ */
176static GV *stdoutgv; /* *STDOUT */ 182static GV *stdoutgv; /* *STDOUT */
177static SV *rv_diehook; 183static SV *rv_diehook;
178static SV *rv_warnhook; 184static SV *rv_warnhook;
179static HV *hv_sig; /* %SIG */ 185static HV *hv_sig; /* %SIG */
180 186
181/* async_pool helper stuff */ 187/* async_pool helper stuff */
182static SV *sv_pool_rss; 188static SV *sv_pool_rss;
183static SV *sv_pool_size; 189static SV *sv_pool_size;
190static SV *sv_async_pool_idle; /* description string */
184static AV *av_async_pool; 191static AV *av_async_pool; /* idle pool */
192static SV *sv_Coro; /* class string */
193static CV *cv_pool_handler;
194static CV *cv_coro_state_new;
185 195
186/* Coro::AnyEvent */ 196/* Coro::AnyEvent */
187static SV *sv_activity; 197static SV *sv_activity;
188 198
189static struct coro_cctx *cctx_first; 199static struct coro_cctx *cctx_first;
… …
197 CC_TRACE_LINE = 0x10, /* trace each statement */ 207 CC_TRACE_LINE = 0x10, /* trace each statement */
198 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 208 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
199}; 209};
200 210
201/* this is a structure representing a c-level coroutine */ 211/* this is a structure representing a c-level coroutine */
202typedef struct coro_cctx { 212typedef struct coro_cctx
213{
203 struct coro_cctx *next; 214 struct coro_cctx *next;
204 215
205 /* the stack */ 216 /* the stack */
206 void *sptr; 217 void *sptr;
207 size_t ssize; 218 size_t ssize;
… …
216#if CORO_USE_VALGRIND 227#if CORO_USE_VALGRIND
217 int valgrind_id; 228 int valgrind_id;
218#endif 229#endif
219 unsigned char flags; 230 unsigned char flags;
220} coro_cctx; 231} coro_cctx;
232
233coro_cctx *cctx_current; /* the currently running cctx */
234
235/*****************************************************************************/
221 236
222enum { 237enum {
223 CF_RUNNING = 0x0001, /* coroutine is running */ 238 CF_RUNNING = 0x0001, /* coroutine is running */
224 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
225 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
226 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
227}; 242};
228 243
229/* the structure where most of the perl state is stored, overlaid on the cxstack */ 244/* the structure where most of the perl state is stored, overlaid on the cxstack */
230typedef struct { 245typedef struct
246{
231 SV *defsv; 247 SV *defsv;
232 AV *defav; 248 AV *defav;
233 SV *errsv; 249 SV *errsv;
234 SV *irsgv; 250 SV *irsgv;
235#define VAR(name,type) type name; 251#define VAR(name,type) type name;
… …
239 255
240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 256#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
241 257
242/* this is a structure representing a perl-level coroutine */ 258/* this is a structure representing a perl-level coroutine */
243struct coro { 259struct coro {
244 /* the c coroutine allocated to this perl coroutine, if any */ 260 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 261 coro_cctx *cctx;
246 262
247 /* process data */ 263 /* state data */
264 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 265 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 266 perl_slots *slot; /* basically the saved sp */
250 267
268 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 269 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */ 270 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 271 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 272 HV *hv; /* the perl hash associated with this coro, if any */
273 void (*on_destroy)(pTHX_ struct coro *coro);
255 274
256 /* statistics */ 275 /* statistics */
257 int usecount; /* number of transfers to this coro */ 276 int usecount; /* number of transfers to this coro */
258 277
259 /* coro process data */ 278 /* coro process data */
260 int prio; 279 int prio;
261 SV *throw; /* exception to be thrown */ 280 SV *except; /* exception to be thrown */
281 SV *rouse_cb;
262 282
263 /* async_pool */ 283 /* async_pool */
264 SV *saved_deffh; 284 SV *saved_deffh;
285 SV *invoke_cb;
286 AV *invoke_av;
265 287
266 /* linked list */ 288 /* linked list */
267 struct coro *next, *prev; 289 struct coro *next, *prev;
268}; 290};
269 291
270typedef struct coro *Coro__State; 292typedef struct coro *Coro__State;
271typedef struct coro *Coro__State_or_hashref; 293typedef struct coro *Coro__State_or_hashref;
294
295/* the following variables are effectively part of the perl context */
296/* and get copied between struct coro and these variables */
297/* the mainr easonw e don't support windows process emulation */
298static struct CoroSLF slf_frame; /* the current slf frame */
272 299
273/** Coro ********************************************************************/ 300/** Coro ********************************************************************/
274 301
275#define PRIO_MAX 3 302#define PRIO_MAX 3
276#define PRIO_HIGH 1 303#define PRIO_HIGH 1
… …
280#define PRIO_MIN -4 307#define PRIO_MIN -4
281 308
282/* for Coro.pm */ 309/* for Coro.pm */
283static SV *coro_current; 310static SV *coro_current;
284static SV *coro_readyhook; 311static SV *coro_readyhook;
285static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 312static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
286static int coro_nready; 313static CV *cv_coro_run, *cv_coro_terminate;
287static struct coro *coro_first; 314static struct coro *coro_first;
315#define coro_nready coroapi.nready
288 316
289/** lowlevel stuff **********************************************************/ 317/** lowlevel stuff **********************************************************/
290 318
291static SV * 319static SV *
292coro_get_sv (pTHX_ const char *name, int create) 320coro_get_sv (pTHX_ const char *name, int create)
… …
316 get_hv (name, create); 344 get_hv (name, create);
317#endif 345#endif
318 return get_hv (name, create); 346 return get_hv (name, create);
319} 347}
320 348
349/* may croak */
350INLINE CV *
351coro_sv_2cv (pTHX_ SV *sv)
352{
353 HV *st;
354 GV *gvp;
355 return sv_2cv (sv, &st, &gvp, 0);
356}
357
321static AV * 358static AV *
322coro_clone_padlist (pTHX_ CV *cv) 359coro_derive_padlist (pTHX_ CV *cv)
323{ 360{
324 AV *padlist = CvPADLIST (cv); 361 AV *padlist = CvPADLIST (cv);
325 AV *newpadlist, *newpad; 362 AV *newpadlist, *newpad;
326 363
327 newpadlist = newAV (); 364 newpadlist = newAV ();
… …
377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 414 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
378 415
379 return 0; 416 return 0;
380} 417}
381 418
382#define CORO_MAGIC_type_cv PERL_MAGIC_ext 419#define CORO_MAGIC_type_cv 26
383#define CORO_MAGIC_type_state PERL_MAGIC_ext 420#define CORO_MAGIC_type_state PERL_MAGIC_ext
384 421
385static MGVTBL coro_cv_vtbl = { 422static MGVTBL coro_cv_vtbl = {
386 0, 0, 0, 0, 423 0, 0, 0, 0,
387 coro_cv_free 424 coro_cv_free
388}; 425};
389 426
427#define CORO_MAGIC_NN(sv, type) \
428 (expect_true (SvMAGIC (sv)->mg_type == type) \
429 ? SvMAGIC (sv) \
430 : mg_find (sv, type))
431
390#define CORO_MAGIC(sv, type) \ 432#define CORO_MAGIC(sv, type) \
391 SvMAGIC (sv) \ 433 (expect_true (SvMAGIC (sv)) \
392 ? SvMAGIC (sv)->mg_type == type \ 434 ? CORO_MAGIC_NN (sv, type) \
393 ? SvMAGIC (sv) \
394 : mg_find (sv, type) \
395 : 0 435 : 0)
396 436
397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 437#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
398#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 438#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
399 439
400static struct coro * 440INLINE struct coro *
401SvSTATE_ (pTHX_ SV *coro) 441SvSTATE_ (pTHX_ SV *coro)
402{ 442{
403 HV *stash; 443 HV *stash;
404 MAGIC *mg; 444 MAGIC *mg;
405 445
… …
420 mg = CORO_MAGIC_state (coro); 460 mg = CORO_MAGIC_state (coro);
421 return (struct coro *)mg->mg_ptr; 461 return (struct coro *)mg->mg_ptr;
422} 462}
423 463
424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 464#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
465
466/* faster than SvSTATE, but expects a coroutine hv */
467#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
468#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
425 469
426/* the next two functions merely cache the padlists */ 470/* the next two functions merely cache the padlists */
427static void 471static void
428get_padlist (pTHX_ CV *cv) 472get_padlist (pTHX_ CV *cv)
429{ 473{
… …
435 else 479 else
436 { 480 {
437#if CORO_PREFER_PERL_FUNCTIONS 481#if CORO_PREFER_PERL_FUNCTIONS
438 /* this is probably cleaner? but also slower! */ 482 /* this is probably cleaner? but also slower! */
439 /* in practise, it seems to be less stable */ 483 /* in practise, it seems to be less stable */
440 CV *cp = Perl_cv_clone (cv); 484 CV *cp = Perl_cv_clone (aTHX_ cv);
441 CvPADLIST (cv) = CvPADLIST (cp); 485 CvPADLIST (cv) = CvPADLIST (cp);
442 CvPADLIST (cp) = 0; 486 CvPADLIST (cp) = 0;
443 SvREFCNT_dec (cp); 487 SvREFCNT_dec (cp);
444#else 488#else
445 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 489 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
446#endif 490#endif
447 } 491 }
448} 492}
449 493
450static void 494static void
… …
496 CvPADLIST (cv) = (AV *)POPs; 540 CvPADLIST (cv) = (AV *)POPs;
497 } 541 }
498 542
499 PUTBACK; 543 PUTBACK;
500 } 544 }
545
546 slf_frame = c->slf_frame;
547 CORO_THROW = c->except;
501} 548}
502 549
503static void 550static void
504save_perl (pTHX_ Coro__State c) 551save_perl (pTHX_ Coro__State c)
505{ 552{
553 c->except = CORO_THROW;
554 c->slf_frame = slf_frame;
555
506 { 556 {
507 dSP; 557 dSP;
508 I32 cxix = cxstack_ix; 558 I32 cxix = cxstack_ix;
509 PERL_CONTEXT *ccstk = cxstack; 559 PERL_CONTEXT *ccstk = cxstack;
510 PERL_SI *top_si = PL_curstackinfo; 560 PERL_SI *top_si = PL_curstackinfo;
… …
577 #undef VAR 627 #undef VAR
578 } 628 }
579} 629}
580 630
581/* 631/*
582 * allocate various perl stacks. This is an exact copy 632 * allocate various perl stacks. This is almost an exact copy
583 * of perl.c:init_stacks, except that it uses less memory 633 * of perl.c:init_stacks, except that it uses less memory
584 * on the (sometimes correct) assumption that coroutines do 634 * on the (sometimes correct) assumption that coroutines do
585 * not usually need a lot of stackspace. 635 * not usually need a lot of stackspace.
586 */ 636 */
587#if CORO_PREFER_PERL_FUNCTIONS 637#if CORO_PREFER_PERL_FUNCTIONS
588# define coro_init_stacks init_stacks 638# define coro_init_stacks(thx) init_stacks ()
589#else 639#else
590static void 640static void
591coro_init_stacks (pTHX) 641coro_init_stacks (pTHX)
592{ 642{
593 PL_curstackinfo = new_stackinfo(32, 8); 643 PL_curstackinfo = new_stackinfo(32, 8);
… …
656#if !PERL_VERSION_ATLEAST (5,10,0) 706#if !PERL_VERSION_ATLEAST (5,10,0)
657 Safefree (PL_retstack); 707 Safefree (PL_retstack);
658#endif 708#endif
659} 709}
660 710
711#define CORO_RSS \
712 rss += sizeof (SYM (curstackinfo)); \
713 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
714 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
715 rss += SYM (tmps_max) * sizeof (SV *); \
716 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
717 rss += SYM (scopestack_max) * sizeof (I32); \
718 rss += SYM (savestack_max) * sizeof (ANY);
719
661static size_t 720static size_t
662coro_rss (pTHX_ struct coro *coro) 721coro_rss (pTHX_ struct coro *coro)
663{ 722{
664 size_t rss = sizeof (*coro); 723 size_t rss = sizeof (*coro);
665 724
666 if (coro->mainstack) 725 if (coro->mainstack)
667 { 726 {
668 perl_slots tmp_slot;
669 perl_slots *slot;
670
671 if (coro->flags & CF_RUNNING) 727 if (coro->flags & CF_RUNNING)
672 { 728 {
673 slot = &tmp_slot; 729 #define SYM(sym) PL_ ## sym
674 730 CORO_RSS;
675 #define VAR(name,type) slot->name = PL_ ## name;
676 # include "state.h"
677 #undef VAR 731 #undef SYM
678 } 732 }
679 else 733 else
680 slot = coro->slot;
681
682 if (slot)
683 { 734 {
684 rss += sizeof (slot->curstackinfo); 735 #define SYM(sym) coro->slot->sym
685 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 736 CORO_RSS;
686 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 737 #undef SYM
687 rss += slot->tmps_max * sizeof (SV *);
688 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
689 rss += slot->scopestack_max * sizeof (I32);
690 rss += slot->savestack_max * sizeof (ANY);
691
692#if !PERL_VERSION_ATLEAST (5,10,0)
693 rss += slot->retstack_max * sizeof (OP *);
694#endif
695 } 738 }
696 } 739 }
697 740
698 return rss; 741 return rss;
699} 742}
… …
789 832
790 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 833 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
791} 834}
792 835
793static void 836static void
837prepare_nop (pTHX_ struct coro_transfer_args *ta)
838{
839 /* kind of mega-hacky, but works */
840 ta->next = ta->prev = (struct coro *)ta;
841}
842
843static int
844slf_check_nop (pTHX_ struct CoroSLF *frame)
845{
846 return 0;
847}
848
849static int
850slf_check_repeat (pTHX_ struct CoroSLF *frame)
851{
852 return 1;
853}
854
855static UNOP coro_setup_op;
856
857static void NOINLINE /* noinline to keep it out of the transfer fast path */
794coro_setup (pTHX_ struct coro *coro) 858coro_setup (pTHX_ struct coro *coro)
795{ 859{
796 /* 860 /*
797 * emulate part of the perl startup here. 861 * emulate part of the perl startup here.
798 */ 862 */
… …
822 PL_rs = newSVsv (GvSV (irsgv)); 886 PL_rs = newSVsv (GvSV (irsgv));
823 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 887 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
824 888
825 { 889 {
826 dSP; 890 dSP;
827 LOGOP myop; 891 UNOP myop;
828 892
829 Zero (&myop, 1, LOGOP); 893 Zero (&myop, 1, UNOP);
830 myop.op_next = Nullop; 894 myop.op_next = Nullop;
895 myop.op_type = OP_ENTERSUB;
831 myop.op_flags = OPf_WANT_VOID; 896 myop.op_flags = OPf_WANT_VOID;
832 897
833 PUSHMARK (SP); 898 PUSHMARK (SP);
834 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 899 PUSHs ((SV *)coro->startcv);
835 PUTBACK; 900 PUTBACK;
836 PL_op = (OP *)&myop; 901 PL_op = (OP *)&myop;
837 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 902 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
838 SPAGAIN;
839 } 903 }
840 904
841 /* this newly created coroutine might be run on an existing cctx which most 905 /* this newly created coroutine might be run on an existing cctx which most
842 * likely was suspended in set_stacklevel, called from entersub. 906 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
843 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
844 * so we ENTER here for symmetry
845 */ 907 */
846 ENTER; 908 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
909 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
910
911 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
912 coro_setup_op.op_next = PL_op;
913 coro_setup_op.op_type = OP_ENTERSUB;
914 coro_setup_op.op_ppaddr = pp_slf;
915 /* no flags etc. required, as an init function won't be called */
916
917 PL_op = (OP *)&coro_setup_op;
918
919 /* copy throw, in case it was set before coro_setup */
920 CORO_THROW = coro->except;
847} 921}
848 922
849static void 923static void
850coro_destruct (pTHX_ struct coro *coro) 924coro_destruct (pTHX_ struct coro *coro)
851{ 925{
… …
875 949
876 SvREFCNT_dec (PL_diehook); 950 SvREFCNT_dec (PL_diehook);
877 SvREFCNT_dec (PL_warnhook); 951 SvREFCNT_dec (PL_warnhook);
878 952
879 SvREFCNT_dec (coro->saved_deffh); 953 SvREFCNT_dec (coro->saved_deffh);
880 SvREFCNT_dec (coro->throw); 954 SvREFCNT_dec (coro->rouse_cb);
955 SvREFCNT_dec (coro->invoke_cb);
956 SvREFCNT_dec (coro->invoke_av);
881 957
882 coro_destruct_stacks (aTHX); 958 coro_destruct_stacks (aTHX);
883} 959}
884 960
885static void 961INLINE void
886free_coro_mortal (pTHX) 962free_coro_mortal (pTHX)
887{ 963{
888 if (expect_true (coro_mortal)) 964 if (expect_true (coro_mortal))
889 { 965 {
890 SvREFCNT_dec (coro_mortal); 966 SvREFCNT_dec (coro_mortal);
… …
895static int 971static int
896runops_trace (pTHX) 972runops_trace (pTHX)
897{ 973{
898 COP *oldcop = 0; 974 COP *oldcop = 0;
899 int oldcxix = -2; 975 int oldcxix = -2;
900 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
901 coro_cctx *cctx = coro->cctx;
902 976
903 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 977 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
904 { 978 {
905 PERL_ASYNC_CHECK (); 979 PERL_ASYNC_CHECK ();
906 980
907 if (cctx->flags & CC_TRACE_ALL) 981 if (cctx_current->flags & CC_TRACE_ALL)
908 { 982 {
909 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 983 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
910 { 984 {
911 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 985 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
912 SV **bot, **top; 986 SV **bot, **top;
913 AV *av = newAV (); /* return values */ 987 AV *av = newAV (); /* return values */
914 SV **cb; 988 SV **cb;
… …
951 1025
952 if (PL_curcop != &PL_compiling) 1026 if (PL_curcop != &PL_compiling)
953 { 1027 {
954 SV **cb; 1028 SV **cb;
955 1029
956 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1030 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
957 { 1031 {
958 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1032 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
959 1033
960 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1034 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
961 { 1035 {
962 runops_proc_t old_runops = PL_runops;
963 dSP; 1036 dSP;
964 GV *gv = CvGV (cx->blk_sub.cv); 1037 GV *gv = CvGV (cx->blk_sub.cv);
965 SV *fullname = sv_2mortal (newSV (0)); 1038 SV *fullname = sv_2mortal (newSV (0));
966 1039
967 if (isGV (gv)) 1040 if (isGV (gv))
… …
972 SAVETMPS; 1045 SAVETMPS;
973 EXTEND (SP, 3); 1046 EXTEND (SP, 3);
974 PUSHMARK (SP); 1047 PUSHMARK (SP);
975 PUSHs (&PL_sv_yes); 1048 PUSHs (&PL_sv_yes);
976 PUSHs (fullname); 1049 PUSHs (fullname);
977 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1050 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
978 PUTBACK; 1051 PUTBACK;
979 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1052 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
980 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1053 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
981 SPAGAIN; 1054 SPAGAIN;
982 FREETMPS; 1055 FREETMPS;
… …
985 } 1058 }
986 1059
987 oldcxix = cxstack_ix; 1060 oldcxix = cxstack_ix;
988 } 1061 }
989 1062
990 if (cctx->flags & CC_TRACE_LINE) 1063 if (cctx_current->flags & CC_TRACE_LINE)
991 { 1064 {
992 dSP; 1065 dSP;
993 1066
994 PL_runops = RUNOPS_DEFAULT; 1067 PL_runops = RUNOPS_DEFAULT;
995 ENTER; 1068 ENTER;
… …
1014 1087
1015 TAINT_NOT; 1088 TAINT_NOT;
1016 return 0; 1089 return 0;
1017} 1090}
1018 1091
1019/* inject a fake call to Coro::State::_cctx_init into the execution */ 1092static struct CoroSLF cctx_ssl_frame;
1020/* _cctx_init should be careful, as it could be called at almost any time */ 1093
1021/* during execution of a perl program */ 1094static void
1095slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1096{
1097 ta->prev = 0;
1098}
1099
1100static int
1101slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1102{
1103 *frame = cctx_ssl_frame;
1104
1105 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1106}
1107
1108/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1022static void NOINLINE 1109static void NOINLINE
1023cctx_prepare (pTHX_ coro_cctx *cctx) 1110cctx_prepare (pTHX)
1024{ 1111{
1025 dSP;
1026 LOGOP myop;
1027
1028 PL_top_env = &PL_start_env; 1112 PL_top_env = &PL_start_env;
1029 1113
1030 if (cctx->flags & CC_TRACE) 1114 if (cctx_current->flags & CC_TRACE)
1031 PL_runops = runops_trace; 1115 PL_runops = runops_trace;
1032 1116
1033 Zero (&myop, 1, LOGOP); 1117 /* we already must be executing an SLF op, there is no other valid way
1034 myop.op_next = PL_op; 1118 * that can lead to creation of a new cctx */
1035 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1119 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1120 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1036 1121
1037 PUSHMARK (SP); 1122 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1038 EXTEND (SP, 2); 1123 cctx_ssl_frame = slf_frame;
1039 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1124
1040 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1125 slf_frame.prepare = slf_prepare_set_stacklevel;
1041 PUTBACK; 1126 slf_frame.check = slf_check_set_stacklevel;
1042 PL_op = (OP *)&myop; 1127}
1043 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1128
1044 SPAGAIN; 1129/* the tail of transfer: execute stuff we can only do after a transfer */
1130INLINE void
1131transfer_tail (pTHX)
1132{
1133 free_coro_mortal (aTHX);
1045} 1134}
1046 1135
1047/* 1136/*
1048 * this is a _very_ stripped down perl interpreter ;) 1137 * this is a _very_ stripped down perl interpreter ;)
1049 */ 1138 */
1050static void 1139static void
1051cctx_run (void *arg) 1140cctx_run (void *arg)
1052{ 1141{
1142#ifdef USE_ITHREADS
1143# if CORO_PTHREAD
1144 PERL_SET_CONTEXT (coro_thx);
1145# endif
1146#endif
1147 {
1053 dTHX; 1148 dTHX;
1054 1149
1055 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1150 /* normally we would need to skip the entersub here */
1056 UNLOCK; 1151 /* not doing so will re-execute it, which is exactly what we want */
1057
1058 /* we now skip the entersub that lead to transfer() */
1059 PL_op = PL_op->op_next; 1152 /* PL_nop = PL_nop->op_next */
1060 1153
1061 /* inject a fake subroutine call to cctx_init */ 1154 /* inject a fake subroutine call to cctx_init */
1062 cctx_prepare (aTHX_ (coro_cctx *)arg); 1155 cctx_prepare (aTHX);
1063 1156
1157 /* cctx_run is the alternative tail of transfer() */
1158 transfer_tail (aTHX);
1159
1064 /* somebody or something will hit me for both perl_run and PL_restartop */ 1160 /* somebody or something will hit me for both perl_run and PL_restartop */
1065 PL_restartop = PL_op; 1161 PL_restartop = PL_op;
1066 perl_run (PL_curinterp); 1162 perl_run (PL_curinterp);
1067
1068 /* 1163 /*
1164 * Unfortunately, there is no way to get at the return values of the
1165 * coro body here, as perl_run destroys these
1166 */
1167
1168 /*
1069 * If perl-run returns we assume exit() was being called or the coro 1169 * If perl-run returns we assume exit() was being called or the coro
1070 * fell off the end, which seems to be the only valid (non-bug) 1170 * fell off the end, which seems to be the only valid (non-bug)
1071 * reason for perl_run to return. We try to exit by jumping to the 1171 * reason for perl_run to return. We try to exit by jumping to the
1072 * bootstrap-time "top" top_env, as we cannot restore the "main" 1172 * bootstrap-time "top" top_env, as we cannot restore the "main"
1073 * coroutine as Coro has no such concept 1173 * coroutine as Coro has no such concept
1074 */ 1174 */
1075 PL_top_env = main_top_env; 1175 PL_top_env = main_top_env;
1076 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1176 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1177 }
1077} 1178}
1078 1179
1079static coro_cctx * 1180static coro_cctx *
1080cctx_new () 1181cctx_new ()
1081{ 1182{
1082 coro_cctx *cctx; 1183 coro_cctx *cctx;
1184
1185 ++cctx_count;
1186 New (0, cctx, 1, coro_cctx);
1187
1188 cctx->gen = cctx_gen;
1189 cctx->flags = 0;
1190 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1191
1192 return cctx;
1193}
1194
1195/* create a new cctx only suitable as source */
1196static coro_cctx *
1197cctx_new_empty ()
1198{
1199 coro_cctx *cctx = cctx_new ();
1200
1201 cctx->sptr = 0;
1202 coro_create (&cctx->cctx, 0, 0, 0, 0);
1203
1204 return cctx;
1205}
1206
1207/* create a new cctx suitable as destination/running a perl interpreter */
1208static coro_cctx *
1209cctx_new_run ()
1210{
1211 coro_cctx *cctx = cctx_new ();
1083 void *stack_start; 1212 void *stack_start;
1084 size_t stack_size; 1213 size_t stack_size;
1085
1086 ++cctx_count;
1087 Newz (0, cctx, 1, coro_cctx);
1088
1089 cctx->gen = cctx_gen;
1090 1214
1091#if HAVE_MMAP 1215#if HAVE_MMAP
1092 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1216 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1093 /* mmap supposedly does allocate-on-write for us */ 1217 /* mmap supposedly does allocate-on-write for us */
1094 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1218 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1095 1219
1096 if (cctx->sptr != (void *)-1) 1220 if (cctx->sptr != (void *)-1)
1097 { 1221 {
1098# if CORO_STACKGUARD 1222 #if CORO_STACKGUARD
1099 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1223 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1100# endif 1224 #endif
1101 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1225 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1102 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1226 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1103 cctx->flags |= CC_MAPPED; 1227 cctx->flags |= CC_MAPPED;
1104 } 1228 }
1105 else 1229 else
1106#endif 1230#endif
1107 { 1231 {
1108 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1232 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1109 New (0, cctx->sptr, cctx_stacksize, long); 1233 New (0, cctx->sptr, cctx_stacksize, long);
1110 1234
1111 if (!cctx->sptr) 1235 if (!cctx->sptr)
1112 { 1236 {
1113 perror ("FATAL: unable to allocate stack for coroutine"); 1237 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1114 _exit (EXIT_FAILURE); 1238 _exit (EXIT_FAILURE);
1115 } 1239 }
1116 1240
1117 stack_start = cctx->sptr; 1241 stack_start = cctx->sptr;
1118 stack_size = cctx->ssize; 1242 stack_size = cctx->ssize;
1119 } 1243 }
1120 1244
1121 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1245 #if CORO_USE_VALGRIND
1246 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1247 #endif
1248
1122 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1249 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1123 1250
1124 return cctx; 1251 return cctx;
1125} 1252}
1126 1253
… …
1128cctx_destroy (coro_cctx *cctx) 1255cctx_destroy (coro_cctx *cctx)
1129{ 1256{
1130 if (!cctx) 1257 if (!cctx)
1131 return; 1258 return;
1132 1259
1260 assert (cctx != cctx_current);//D temporary
1261
1133 --cctx_count; 1262 --cctx_count;
1134 coro_destroy (&cctx->cctx); 1263 coro_destroy (&cctx->cctx);
1135 1264
1136 /* coro_transfer creates new, empty cctx's */ 1265 /* coro_transfer creates new, empty cctx's */
1137 if (cctx->sptr) 1266 if (cctx->sptr)
1138 { 1267 {
1139#if CORO_USE_VALGRIND 1268 #if CORO_USE_VALGRIND
1140 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1269 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1141#endif 1270 #endif
1142 1271
1143#if HAVE_MMAP 1272#if HAVE_MMAP
1144 if (cctx->flags & CC_MAPPED) 1273 if (cctx->flags & CC_MAPPED)
1145 munmap (cctx->sptr, cctx->ssize); 1274 munmap (cctx->sptr, cctx->ssize);
1146 else 1275 else
… …
1167 return cctx; 1296 return cctx;
1168 1297
1169 cctx_destroy (cctx); 1298 cctx_destroy (cctx);
1170 } 1299 }
1171 1300
1172 return cctx_new (); 1301 return cctx_new_run ();
1173} 1302}
1174 1303
1175static void 1304static void
1176cctx_put (coro_cctx *cctx) 1305cctx_put (coro_cctx *cctx)
1177{ 1306{
1178 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1307 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1179 1308
1180 /* free another cctx if overlimit */ 1309 /* free another cctx if overlimit */
1181 if (expect_false (cctx_idle >= cctx_max_idle)) 1310 if (expect_false (cctx_idle >= cctx_max_idle))
1182 { 1311 {
1183 coro_cctx *first = cctx_first; 1312 coro_cctx *first = cctx_first;
… …
1195/** coroutine switching *****************************************************/ 1324/** coroutine switching *****************************************************/
1196 1325
1197static void 1326static void
1198transfer_check (pTHX_ struct coro *prev, struct coro *next) 1327transfer_check (pTHX_ struct coro *prev, struct coro *next)
1199{ 1328{
1329 /* TODO: throwing up here is considered harmful */
1330
1200 if (expect_true (prev != next)) 1331 if (expect_true (prev != next))
1201 { 1332 {
1202 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1333 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1203 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1334 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1204 1335
1205 if (expect_false (next->flags & CF_RUNNING)) 1336 if (expect_false (next->flags & CF_RUNNING))
1206 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1337 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1207 1338
1208 if (expect_false (next->flags & CF_DESTROYED)) 1339 if (expect_false (next->flags & CF_DESTROYED))
1209 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1340 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1210 1341
1211#if !PERL_VERSION_ATLEAST (5,10,0) 1342#if !PERL_VERSION_ATLEAST (5,10,0)
1212 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1343 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1213 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1344 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1214#endif 1345#endif
1215 } 1346 }
1216} 1347}
1217 1348
1218/* always use the TRANSFER macro */ 1349/* always use the TRANSFER macro */
1219static void NOINLINE 1350static void NOINLINE /* noinline so we have a fixed stackframe */
1220transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1351transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1221{ 1352{
1222 dSTACKLEVEL; 1353 dSTACKLEVEL;
1223 1354
1224 /* sometimes transfer is only called to set idle_sp */ 1355 /* sometimes transfer is only called to set idle_sp */
1225 if (expect_false (!next)) 1356 if (expect_false (!prev))
1226 { 1357 {
1227 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1358 cctx_current->idle_sp = STACKLEVEL;
1228 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1359 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1229 } 1360 }
1230 else if (expect_true (prev != next)) 1361 else if (expect_true (prev != next))
1231 { 1362 {
1232 static volatile int has_throw;
1233 coro_cctx *prev__cctx; 1363 coro_cctx *cctx_prev;
1234 1364
1235 if (expect_false (prev->flags & CF_NEW)) 1365 if (expect_false (prev->flags & CF_NEW))
1236 { 1366 {
1237 /* create a new empty/source context */ 1367 /* create a new empty/source context */
1238 ++cctx_count;
1239 New (0, prev->cctx, 1, coro_cctx);
1240 prev->cctx->sptr = 0;
1241 coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
1242
1243 prev->flags &= ~CF_NEW; 1368 prev->flags &= ~CF_NEW;
1244 prev->flags |= CF_RUNNING; 1369 prev->flags |= CF_RUNNING;
1245 } 1370 }
1246 1371
1247 prev->flags &= ~CF_RUNNING; 1372 prev->flags &= ~CF_RUNNING;
1248 next->flags |= CF_RUNNING; 1373 next->flags |= CF_RUNNING;
1249
1250 LOCK;
1251 1374
1252 /* first get rid of the old state */ 1375 /* first get rid of the old state */
1253 save_perl (aTHX_ prev); 1376 save_perl (aTHX_ prev);
1254 1377
1255 if (expect_false (next->flags & CF_NEW)) 1378 if (expect_false (next->flags & CF_NEW))
… …
1260 coro_setup (aTHX_ next); 1383 coro_setup (aTHX_ next);
1261 } 1384 }
1262 else 1385 else
1263 load_perl (aTHX_ next); 1386 load_perl (aTHX_ next);
1264 1387
1265 prev__cctx = prev->cctx; 1388 assert (!prev->cctx);//D temporary
1266 1389
1267 /* possibly "free" the cctx */ 1390 /* possibly untie and reuse the cctx */
1268 if (expect_true ( 1391 if (expect_true (
1269 prev__cctx->idle_sp == STACKLEVEL 1392 cctx_current->idle_sp == STACKLEVEL
1270 && !(prev__cctx->flags & CC_TRACE) 1393 && !(cctx_current->flags & CC_TRACE)
1271 && !force_cctx 1394 && !force_cctx
1272 )) 1395 ))
1273 { 1396 {
1274 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1397 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1275 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1398 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1276 1399
1277 prev->cctx = 0;
1278
1279 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1400 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1280 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1401 /* without this the next cctx_get might destroy the running cctx while still in use */
1281 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1402 if (expect_false (CCTX_EXPIRED (cctx_current)))
1282 if (!next->cctx) 1403 if (expect_true (!next->cctx))
1283 next->cctx = cctx_get (aTHX); 1404 next->cctx = cctx_get (aTHX);
1284 1405
1285 cctx_put (prev__cctx); 1406 cctx_put (cctx_current);
1286 } 1407 }
1408 else
1409 prev->cctx = cctx_current;
1287 1410
1288 ++next->usecount; 1411 ++next->usecount;
1289 1412
1290 if (expect_true (!next->cctx)) 1413 cctx_prev = cctx_current;
1291 next->cctx = cctx_get (aTHX); 1414 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1292 1415
1293 has_throw = !!next->throw; 1416 next->cctx = 0;
1294 1417
1295 if (expect_false (prev__cctx != next->cctx)) 1418 if (expect_false (cctx_prev != cctx_current))
1296 { 1419 {
1297 prev__cctx->top_env = PL_top_env; 1420 cctx_prev->top_env = PL_top_env;
1298 PL_top_env = next->cctx->top_env; 1421 PL_top_env = cctx_current->top_env;
1299 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1422 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1300 } 1423 }
1301 1424
1302 free_coro_mortal (aTHX); 1425 transfer_tail (aTHX);
1303 UNLOCK;
1304
1305 if (expect_false (has_throw))
1306 {
1307 struct coro *coro = SvSTATE (coro_current);
1308
1309 if (coro->throw)
1310 {
1311 SV *exception = coro->throw;
1312 coro->throw = 0;
1313 sv_setsv (ERRSV, exception);
1314 croak (0);
1315 }
1316 }
1317 } 1426 }
1318} 1427}
1319
1320struct transfer_args
1321{
1322 struct coro *prev, *next;
1323};
1324 1428
1325#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1429#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1326#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1430#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1327 1431
1328/** high level stuff ********************************************************/ 1432/** high level stuff ********************************************************/
… …
1330static int 1434static int
1331coro_state_destroy (pTHX_ struct coro *coro) 1435coro_state_destroy (pTHX_ struct coro *coro)
1332{ 1436{
1333 if (coro->flags & CF_DESTROYED) 1437 if (coro->flags & CF_DESTROYED)
1334 return 0; 1438 return 0;
1439
1440 if (coro->on_destroy)
1441 coro->on_destroy (aTHX_ coro);
1335 1442
1336 coro->flags |= CF_DESTROYED; 1443 coro->flags |= CF_DESTROYED;
1337 1444
1338 if (coro->flags & CF_READY) 1445 if (coro->flags & CF_READY)
1339 { 1446 {
1340 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1447 /* reduce nready, as destroying a ready coro effectively unreadies it */
1341 /* alternative: look through all ready queues and remove the coro */ 1448 /* alternative: look through all ready queues and remove the coro */
1342 LOCK;
1343 --coro_nready; 1449 --coro_nready;
1344 UNLOCK;
1345 } 1450 }
1346 else 1451 else
1347 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1452 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1348 1453
1349 if (coro->mainstack && coro->mainstack != main_mainstack) 1454 if (coro->mainstack && coro->mainstack != main_mainstack)
1350 { 1455 {
1351 struct coro temp; 1456 struct coro temp;
1352 1457
1353 if (coro->flags & CF_RUNNING) 1458 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1354 croak ("FATAL: tried to destroy currently running coroutine");
1355 1459
1356 save_perl (aTHX_ &temp); 1460 save_perl (aTHX_ &temp);
1357 load_perl (aTHX_ coro); 1461 load_perl (aTHX_ coro);
1358 1462
1359 coro_destruct (aTHX_ coro); 1463 coro_destruct (aTHX_ coro);
… …
1362 1466
1363 coro->slot = 0; 1467 coro->slot = 0;
1364 } 1468 }
1365 1469
1366 cctx_destroy (coro->cctx); 1470 cctx_destroy (coro->cctx);
1471 SvREFCNT_dec (coro->startcv);
1367 SvREFCNT_dec (coro->args); 1472 SvREFCNT_dec (coro->args);
1473 SvREFCNT_dec (CORO_THROW);
1368 1474
1369 if (coro->next) coro->next->prev = coro->prev; 1475 if (coro->next) coro->next->prev = coro->prev;
1370 if (coro->prev) coro->prev->next = coro->next; 1476 if (coro->prev) coro->prev->next = coro->next;
1371 if (coro == coro_first) coro_first = coro->next; 1477 if (coro == coro_first) coro_first = coro->next;
1372 1478
… …
1410# define MGf_DUP 0 1516# define MGf_DUP 0
1411#endif 1517#endif
1412}; 1518};
1413 1519
1414static void 1520static void
1415prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1521prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1416{ 1522{
1417 ta->prev = SvSTATE (prev_sv); 1523 ta->prev = SvSTATE (prev_sv);
1418 ta->next = SvSTATE (next_sv); 1524 ta->next = SvSTATE (next_sv);
1419 TRANSFER_CHECK (*ta); 1525 TRANSFER_CHECK (*ta);
1420} 1526}
1421 1527
1422static void 1528static void
1423api_transfer (SV *prev_sv, SV *next_sv) 1529api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1424{ 1530{
1425 dTHX;
1426 struct transfer_args ta; 1531 struct coro_transfer_args ta;
1427 1532
1428 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1533 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1429 TRANSFER (ta, 1); 1534 TRANSFER (ta, 1);
1430} 1535}
1431 1536
1537/*****************************************************************************/
1538/* gensub: simple closure generation utility */
1539
1540#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1541
1542/* create a closure from XS, returns a code reference */
1543/* the arg can be accessed via GENSUB_ARG from the callback */
1544/* the callback must use dXSARGS/XSRETURN */
1545static SV *
1546gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1547{
1548 CV *cv = (CV *)newSV (0);
1549
1550 sv_upgrade ((SV *)cv, SVt_PVCV);
1551
1552 CvANON_on (cv);
1553 CvISXSUB_on (cv);
1554 CvXSUB (cv) = xsub;
1555 GENSUB_ARG = arg;
1556
1557 return newRV_noinc ((SV *)cv);
1558}
1559
1432/** Coro ********************************************************************/ 1560/** Coro ********************************************************************/
1433 1561
1434static void 1562INLINE void
1435coro_enq (pTHX_ SV *coro_sv) 1563coro_enq (pTHX_ struct coro *coro)
1436{ 1564{
1437 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1565 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1438} 1566}
1439 1567
1440static SV * 1568INLINE SV *
1441coro_deq (pTHX) 1569coro_deq (pTHX)
1442{ 1570{
1443 int prio; 1571 int prio;
1444 1572
1445 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1573 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1448 1576
1449 return 0; 1577 return 0;
1450} 1578}
1451 1579
1452static int 1580static int
1453api_ready (SV *coro_sv) 1581api_ready (pTHX_ SV *coro_sv)
1454{ 1582{
1455 dTHX;
1456 struct coro *coro; 1583 struct coro *coro;
1457 SV *sv_hook; 1584 SV *sv_hook;
1458 void (*xs_hook)(void); 1585 void (*xs_hook)(void);
1459 1586
1460 if (SvROK (coro_sv)) 1587 if (SvROK (coro_sv))
… …
1465 if (coro->flags & CF_READY) 1592 if (coro->flags & CF_READY)
1466 return 0; 1593 return 0;
1467 1594
1468 coro->flags |= CF_READY; 1595 coro->flags |= CF_READY;
1469 1596
1470 LOCK;
1471
1472 sv_hook = coro_nready ? 0 : coro_readyhook; 1597 sv_hook = coro_nready ? 0 : coro_readyhook;
1473 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1598 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1474 1599
1475 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1600 coro_enq (aTHX_ coro);
1476 ++coro_nready; 1601 ++coro_nready;
1477 1602
1478 UNLOCK;
1479
1480 if (sv_hook) 1603 if (sv_hook)
1481 { 1604 {
1482 dSP; 1605 dSP;
1483 1606
1484 ENTER; 1607 ENTER;
1485 SAVETMPS; 1608 SAVETMPS;
1486 1609
1487 PUSHMARK (SP); 1610 PUSHMARK (SP);
1488 PUTBACK; 1611 PUTBACK;
1489 call_sv (sv_hook, G_DISCARD); 1612 call_sv (sv_hook, G_VOID | G_DISCARD);
1490 SPAGAIN;
1491 1613
1492 FREETMPS; 1614 FREETMPS;
1493 LEAVE; 1615 LEAVE;
1494 } 1616 }
1495 1617
… …
1498 1620
1499 return 1; 1621 return 1;
1500} 1622}
1501 1623
1502static int 1624static int
1503api_is_ready (SV *coro_sv) 1625api_is_ready (pTHX_ SV *coro_sv)
1504{ 1626{
1505 dTHX;
1506 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1627 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1507} 1628}
1508 1629
1630/* expects to own a reference to next->hv */
1631INLINE void
1632prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1633{
1634 SV *prev_sv = SvRV (coro_current);
1635
1636 ta->prev = SvSTATE_hv (prev_sv);
1637 ta->next = next;
1638
1639 TRANSFER_CHECK (*ta);
1640
1641 SvRV_set (coro_current, (SV *)next->hv);
1642
1643 free_coro_mortal (aTHX);
1644 coro_mortal = prev_sv;
1645}
1646
1509static void 1647static void
1510prepare_schedule (pTHX_ struct transfer_args *ta) 1648prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1511{ 1649{
1512 SV *prev_sv, *next_sv;
1513
1514 for (;;) 1650 for (;;)
1515 { 1651 {
1516 LOCK;
1517 next_sv = coro_deq (aTHX); 1652 SV *next_sv = coro_deq (aTHX);
1518 1653
1519 /* nothing to schedule: call the idle handler */
1520 if (expect_false (!next_sv)) 1654 if (expect_true (next_sv))
1521 { 1655 {
1656 struct coro *next = SvSTATE_hv (next_sv);
1657
1658 /* cannot transfer to destroyed coros, skip and look for next */
1659 if (expect_false (next->flags & CF_DESTROYED))
1660 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1661 else
1662 {
1663 next->flags &= ~CF_READY;
1664 --coro_nready;
1665
1666 prepare_schedule_to (aTHX_ ta, next);
1667 break;
1668 }
1669 }
1670 else
1671 {
1672 /* nothing to schedule: call the idle handler */
1522 dSP; 1673 dSP;
1523 UNLOCK;
1524 1674
1525 ENTER; 1675 ENTER;
1526 SAVETMPS; 1676 SAVETMPS;
1527 1677
1528 PUSHMARK (SP); 1678 PUSHMARK (SP);
1529 PUTBACK; 1679 PUTBACK;
1530 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1680 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1531 SPAGAIN;
1532 1681
1533 FREETMPS; 1682 FREETMPS;
1534 LEAVE; 1683 LEAVE;
1535 continue;
1536 } 1684 }
1537
1538 ta->next = SvSTATE (next_sv);
1539
1540 /* cannot transfer to destroyed coros, skip and look for next */
1541 if (expect_false (ta->next->flags & CF_DESTROYED))
1542 {
1543 UNLOCK;
1544 SvREFCNT_dec (next_sv);
1545 /* coro_nready is already taken care of by destroy */
1546 continue;
1547 }
1548
1549 --coro_nready;
1550 UNLOCK;
1551 break;
1552 } 1685 }
1553
1554 /* free this only after the transfer */
1555 prev_sv = SvRV (coro_current);
1556 ta->prev = SvSTATE (prev_sv);
1557 TRANSFER_CHECK (*ta);
1558 assert (ta->next->flags & CF_READY);
1559 ta->next->flags &= ~CF_READY;
1560 SvRV_set (coro_current, next_sv);
1561
1562 LOCK;
1563 free_coro_mortal (aTHX);
1564 coro_mortal = prev_sv;
1565 UNLOCK;
1566} 1686}
1567 1687
1568static void 1688INLINE void
1569prepare_cede (pTHX_ struct transfer_args *ta) 1689prepare_cede (pTHX_ struct coro_transfer_args *ta)
1570{ 1690{
1571 api_ready (coro_current); 1691 api_ready (aTHX_ coro_current);
1572 prepare_schedule (aTHX_ ta); 1692 prepare_schedule (aTHX_ ta);
1573} 1693}
1574 1694
1695INLINE void
1696prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1697{
1698 SV *prev = SvRV (coro_current);
1699
1700 if (coro_nready)
1701 {
1702 prepare_schedule (aTHX_ ta);
1703 api_ready (aTHX_ prev);
1704 }
1705 else
1706 prepare_nop (aTHX_ ta);
1707}
1708
1709static void
1710api_schedule (pTHX)
1711{
1712 struct coro_transfer_args ta;
1713
1714 prepare_schedule (aTHX_ &ta);
1715 TRANSFER (ta, 1);
1716}
1717
1718static void
1719api_schedule_to (pTHX_ SV *coro_sv)
1720{
1721 struct coro_transfer_args ta;
1722 struct coro *next = SvSTATE (coro_sv);
1723
1724 SvREFCNT_inc_NN (coro_sv);
1725 prepare_schedule_to (aTHX_ &ta, next);
1726}
1727
1575static int 1728static int
1576prepare_cede_notself (pTHX_ struct transfer_args *ta) 1729api_cede (pTHX)
1577{ 1730{
1578 if (coro_nready) 1731 struct coro_transfer_args ta;
1579 { 1732
1580 SV *prev = SvRV (coro_current);
1581 prepare_schedule (aTHX_ ta); 1733 prepare_cede (aTHX_ &ta);
1582 api_ready (prev); 1734
1735 if (expect_true (ta.prev != ta.next))
1736 {
1737 TRANSFER (ta, 1);
1583 return 1; 1738 return 1;
1584 } 1739 }
1585 else 1740 else
1586 return 0; 1741 return 0;
1587} 1742}
1588 1743
1589static void
1590api_schedule (void)
1591{
1592 dTHX;
1593 struct transfer_args ta;
1594
1595 prepare_schedule (aTHX_ &ta);
1596 TRANSFER (ta, 1);
1597}
1598
1599static int 1744static int
1600api_cede (void) 1745api_cede_notself (pTHX)
1601{ 1746{
1602 dTHX; 1747 if (coro_nready)
1748 {
1603 struct transfer_args ta; 1749 struct coro_transfer_args ta;
1604 1750
1605 prepare_cede (aTHX_ &ta); 1751 prepare_cede_notself (aTHX_ &ta);
1606
1607 if (expect_true (ta.prev != ta.next))
1608 {
1609 TRANSFER (ta, 1); 1752 TRANSFER (ta, 1);
1610 return 1; 1753 return 1;
1611 } 1754 }
1612 else 1755 else
1613 return 0; 1756 return 0;
1614} 1757}
1615 1758
1616static int 1759static void
1617api_cede_notself (void)
1618{
1619 dTHX;
1620 struct transfer_args ta;
1621
1622 if (prepare_cede_notself (aTHX_ &ta))
1623 {
1624 TRANSFER (ta, 1);
1625 return 1;
1626 }
1627 else
1628 return 0;
1629}
1630
1631static void
1632api_trace (SV *coro_sv, int flags) 1760api_trace (pTHX_ SV *coro_sv, int flags)
1633{ 1761{
1634 dTHX;
1635 struct coro *coro = SvSTATE (coro_sv); 1762 struct coro *coro = SvSTATE (coro_sv);
1636 1763
1764 if (coro->flags & CF_RUNNING)
1765 croak ("cannot enable tracing on a running coroutine, caught");
1766
1637 if (flags & CC_TRACE) 1767 if (flags & CC_TRACE)
1638 { 1768 {
1639 if (!coro->cctx) 1769 if (!coro->cctx)
1640 coro->cctx = cctx_new (); 1770 coro->cctx = cctx_new_run ();
1641 else if (!(coro->cctx->flags & CC_TRACE)) 1771 else if (!(coro->cctx->flags & CC_TRACE))
1642 croak ("cannot enable tracing on coroutine with custom stack"); 1772 croak ("cannot enable tracing on coroutine with custom stack, caught");
1643 1773
1644 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1774 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1645 } 1775 }
1646 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1776 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1647 { 1777 {
… …
1652 else 1782 else
1653 coro->slot->runops = RUNOPS_DEFAULT; 1783 coro->slot->runops = RUNOPS_DEFAULT;
1654 } 1784 }
1655} 1785}
1656 1786
1787static void
1788coro_call_on_destroy (pTHX_ struct coro *coro)
1789{
1790 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1791 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1792
1793 if (on_destroyp)
1794 {
1795 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1796
1797 while (AvFILLp (on_destroy) >= 0)
1798 {
1799 dSP; /* don't disturb outer sp */
1800 SV *cb = av_pop (on_destroy);
1801
1802 PUSHMARK (SP);
1803
1804 if (statusp)
1805 {
1806 int i;
1807 AV *status = (AV *)SvRV (*statusp);
1808 EXTEND (SP, AvFILLp (status) + 1);
1809
1810 for (i = 0; i <= AvFILLp (status); ++i)
1811 PUSHs (AvARRAY (status)[i]);
1812 }
1813
1814 PUTBACK;
1815 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1816 }
1817 }
1818}
1819
1820static void
1821slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1822{
1823 int i;
1824 HV *hv = (HV *)SvRV (coro_current);
1825 AV *av = newAV ();
1826
1827 av_extend (av, items - 1);
1828 for (i = 0; i < items; ++i)
1829 av_push (av, SvREFCNT_inc_NN (arg [i]));
1830
1831 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1832
1833 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1834 api_ready (aTHX_ sv_manager);
1835
1836 frame->prepare = prepare_schedule;
1837 frame->check = slf_check_repeat;
1838}
1839
1840/*****************************************************************************/
1841/* async pool handler */
1842
1657static int 1843static int
1658coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1844slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1659{ 1845{
1660 AV *padlist; 1846 HV *hv = (HV *)SvRV (coro_current);
1661 AV *av = (AV *)mg->mg_obj; 1847 struct coro *coro = (struct coro *)frame->data;
1662 1848
1663 abort (); 1849 if (!coro->invoke_cb)
1850 return 1; /* loop till we have invoke */
1851 else
1852 {
1853 hv_store (hv, "desc", sizeof ("desc") - 1,
1854 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1855
1856 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1857
1858 {
1859 dSP;
1860 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1861 PUTBACK;
1862 }
1863
1864 SvREFCNT_dec (GvAV (PL_defgv));
1865 GvAV (PL_defgv) = coro->invoke_av;
1866 coro->invoke_av = 0;
1867
1868 return 0;
1869 }
1870}
1871
1872static void
1873slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1874{
1875 HV *hv = (HV *)SvRV (coro_current);
1876 struct coro *coro = SvSTATE_hv ((SV *)hv);
1877
1878 if (expect_true (coro->saved_deffh))
1879 {
1880 /* subsequent iteration */
1881 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1882 coro->saved_deffh = 0;
1883
1884 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1885 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1886 {
1887 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1888 coro->invoke_av = newAV ();
1889
1890 frame->prepare = prepare_nop;
1891 }
1892 else
1893 {
1894 av_clear (GvAV (PL_defgv));
1895 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1896
1897 coro->prio = 0;
1898
1899 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1900 api_trace (aTHX_ coro_current, 0);
1901
1902 frame->prepare = prepare_schedule;
1903 av_push (av_async_pool, SvREFCNT_inc (hv));
1904 }
1905 }
1906 else
1907 {
1908 /* first iteration, simply fall through */
1909 frame->prepare = prepare_nop;
1910 }
1911
1912 frame->check = slf_check_pool_handler;
1913 frame->data = (void *)coro;
1914}
1915
1916/*****************************************************************************/
1917/* rouse callback */
1918
1919#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1920
1921static void
1922coro_rouse_callback (pTHX_ CV *cv)
1923{
1924 dXSARGS;
1925 SV *data = (SV *)GENSUB_ARG;
1926
1927 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1928 {
1929 /* first call, set args */
1930 AV *av = newAV ();
1931 SV *coro = SvRV (data);
1932
1933 SvRV_set (data, (SV *)av);
1934 api_ready (aTHX_ coro);
1935 SvREFCNT_dec (coro);
1936
1937 /* better take a full copy of the arguments */
1938 while (items--)
1939 av_store (av, items, newSVsv (ST (items)));
1940 }
1941
1942 XSRETURN_EMPTY;
1943}
1944
1945static int
1946slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1947{
1948 SV *data = (SV *)frame->data;
1949
1950 if (CORO_THROW)
1951 return 0;
1952
1953 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1954 return 1;
1955
1956 /* now push all results on the stack */
1957 {
1958 dSP;
1959 AV *av = (AV *)SvRV (data);
1960 int i;
1961
1962 EXTEND (SP, AvFILLp (av) + 1);
1963 for (i = 0; i <= AvFILLp (av); ++i)
1964 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1965
1966 /* we have stolen the elements, so ste length to zero and free */
1967 AvFILLp (av) = -1;
1968 av_undef (av);
1969
1970 PUTBACK;
1971 }
1664 1972
1665 return 0; 1973 return 0;
1666} 1974}
1667 1975
1668static MGVTBL coro_gensub_vtbl = { 1976static void
1669 0, 0, 0, 0, 1977slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1670 coro_gensub_free 1978{
1671}; 1979 SV *cb;
1980
1981 if (items)
1982 cb = arg [0];
1983 else
1984 {
1985 struct coro *coro = SvSTATE_current;
1986
1987 if (!coro->rouse_cb)
1988 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1989
1990 cb = sv_2mortal (coro->rouse_cb);
1991 coro->rouse_cb = 0;
1992 }
1993
1994 if (!SvROK (cb)
1995 || SvTYPE (SvRV (cb)) != SVt_PVCV
1996 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1997 croak ("Coro::rouse_wait called with illegal callback argument,");
1998
1999 {
2000 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2001 SV *data = (SV *)GENSUB_ARG;
2002
2003 frame->data = (void *)data;
2004 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2005 frame->check = slf_check_rouse_wait;
2006 }
2007}
2008
2009static SV *
2010coro_new_rouse_cb (pTHX)
2011{
2012 HV *hv = (HV *)SvRV (coro_current);
2013 struct coro *coro = SvSTATE_hv (hv);
2014 SV *data = newRV_inc ((SV *)hv);
2015 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
2016
2017 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2018 SvREFCNT_dec (data); /* magicext increases the refcount */
2019
2020 SvREFCNT_dec (coro->rouse_cb);
2021 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2022
2023 return cb;
2024}
2025
2026/*****************************************************************************/
2027/* schedule-like-function opcode (SLF) */
2028
2029static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2030static const CV *slf_cv;
2031static SV **slf_argv;
2032static int slf_argc, slf_arga; /* count, allocated */
2033static I32 slf_ax; /* top of stack, for restore */
2034
2035/* this restores the stack in the case we patched the entersub, to */
2036/* recreate the stack frame as perl will on following calls */
2037/* since entersub cleared the stack */
2038static OP *
2039pp_restore (pTHX)
2040{
2041 int i;
2042 SV **SP = PL_stack_base + slf_ax;
2043
2044 PUSHMARK (SP);
2045
2046 EXTEND (SP, slf_argc + 1);
2047
2048 for (i = 0; i < slf_argc; ++i)
2049 PUSHs (sv_2mortal (slf_argv [i]));
2050
2051 PUSHs ((SV *)CvGV (slf_cv));
2052
2053 RETURNOP (slf_restore.op_first);
2054}
2055
2056static void
2057slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2058{
2059 SV **arg = (SV **)slf_frame.data;
2060
2061 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2062}
2063
2064static void
2065slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2066{
2067 if (items != 2)
2068 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2069
2070 frame->prepare = slf_prepare_transfer;
2071 frame->check = slf_check_nop;
2072 frame->data = (void *)arg; /* let's hope it will stay valid */
2073}
2074
2075static void
2076slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2077{
2078 frame->prepare = prepare_schedule;
2079 frame->check = slf_check_nop;
2080}
2081
2082static void
2083slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2084{
2085 struct coro *next = (struct coro *)slf_frame.data;
2086
2087 SvREFCNT_inc_NN (next->hv);
2088 prepare_schedule_to (aTHX_ ta, next);
2089}
2090
2091static void
2092slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093{
2094 if (!items)
2095 croak ("Coro::schedule_to expects a coroutine argument, caught");
2096
2097 frame->data = (void *)SvSTATE (arg [0]);
2098 frame->prepare = slf_prepare_schedule_to;
2099 frame->check = slf_check_nop;
2100}
2101
2102static void
2103slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2104{
2105 api_ready (aTHX_ SvRV (coro_current));
2106
2107 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2108}
2109
2110static void
2111slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2112{
2113 frame->prepare = prepare_cede;
2114 frame->check = slf_check_nop;
2115}
2116
2117static void
2118slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2119{
2120 frame->prepare = prepare_cede_notself;
2121 frame->check = slf_check_nop;
2122}
2123
2124/*
2125 * these not obviously related functions are all rolled into one
2126 * function to increase chances that they all will call transfer with the same
2127 * stack offset
2128 * SLF stands for "schedule-like-function".
2129 */
2130static OP *
2131pp_slf (pTHX)
2132{
2133 I32 checkmark; /* mark SP to see how many elements check has pushed */
2134
2135 /* set up the slf frame, unless it has already been set-up */
2136 /* the latter happens when a new coro has been started */
2137 /* or when a new cctx was attached to an existing coroutine */
2138 if (expect_true (!slf_frame.prepare))
2139 {
2140 /* first iteration */
2141 dSP;
2142 SV **arg = PL_stack_base + TOPMARK + 1;
2143 int items = SP - arg; /* args without function object */
2144 SV *gv = *sp;
2145
2146 /* do a quick consistency check on the "function" object, and if it isn't */
2147 /* for us, divert to the real entersub */
2148 if (SvTYPE (gv) != SVt_PVGV
2149 || !GvCV (gv)
2150 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2151 return PL_ppaddr[OP_ENTERSUB](aTHX);
2152
2153 if (!(PL_op->op_flags & OPf_STACKED))
2154 {
2155 /* ampersand-form of call, use @_ instead of stack */
2156 AV *av = GvAV (PL_defgv);
2157 arg = AvARRAY (av);
2158 items = AvFILLp (av) + 1;
2159 }
2160
2161 /* now call the init function, which needs to set up slf_frame */
2162 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2163 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2164
2165 /* pop args */
2166 SP = PL_stack_base + POPMARK;
2167
2168 PUTBACK;
2169 }
2170
2171 /* now that we have a slf_frame, interpret it! */
2172 /* we use a callback system not to make the code needlessly */
2173 /* complicated, but so we can run multiple perl coros from one cctx */
2174
2175 do
2176 {
2177 struct coro_transfer_args ta;
2178
2179 slf_frame.prepare (aTHX_ &ta);
2180 TRANSFER (ta, 0);
2181
2182 checkmark = PL_stack_sp - PL_stack_base;
2183 }
2184 while (slf_frame.check (aTHX_ &slf_frame));
2185
2186 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2187
2188 /* exception handling */
2189 if (expect_false (CORO_THROW))
2190 {
2191 SV *exception = sv_2mortal (CORO_THROW);
2192
2193 CORO_THROW = 0;
2194 sv_setsv (ERRSV, exception);
2195 croak (0);
2196 }
2197
2198 /* return value handling - mostly like entersub */
2199 /* make sure we put something on the stack in scalar context */
2200 if (GIMME_V == G_SCALAR)
2201 {
2202 dSP;
2203 SV **bot = PL_stack_base + checkmark;
2204
2205 if (sp == bot) /* too few, push undef */
2206 bot [1] = &PL_sv_undef;
2207 else if (sp != bot + 1) /* too many, take last one */
2208 bot [1] = *sp;
2209
2210 SP = bot + 1;
2211
2212 PUTBACK;
2213 }
2214
2215 return NORMAL;
2216}
2217
2218static void
2219api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2220{
2221 int i;
2222 SV **arg = PL_stack_base + ax;
2223 int items = PL_stack_sp - arg + 1;
2224
2225 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2226
2227 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2228 && PL_op->op_ppaddr != pp_slf)
2229 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2230
2231 CvFLAGS (cv) |= CVf_SLF;
2232 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2233 slf_cv = cv;
2234
2235 /* we patch the op, and then re-run the whole call */
2236 /* we have to put the same argument on the stack for this to work */
2237 /* and this will be done by pp_restore */
2238 slf_restore.op_next = (OP *)&slf_restore;
2239 slf_restore.op_type = OP_CUSTOM;
2240 slf_restore.op_ppaddr = pp_restore;
2241 slf_restore.op_first = PL_op;
2242
2243 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2244
2245 if (PL_op->op_flags & OPf_STACKED)
2246 {
2247 if (items > slf_arga)
2248 {
2249 slf_arga = items;
2250 free (slf_argv);
2251 slf_argv = malloc (slf_arga * sizeof (SV *));
2252 }
2253
2254 slf_argc = items;
2255
2256 for (i = 0; i < items; ++i)
2257 slf_argv [i] = SvREFCNT_inc (arg [i]);
2258 }
2259 else
2260 slf_argc = 0;
2261
2262 PL_op->op_ppaddr = pp_slf;
2263 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2264
2265 PL_op = (OP *)&slf_restore;
2266}
1672 2267
1673/*****************************************************************************/ 2268/*****************************************************************************/
1674/* PerlIO::cede */ 2269/* PerlIO::cede */
1675 2270
1676typedef struct 2271typedef struct
… …
1704 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2299 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1705 double now = nvtime (); 2300 double now = nvtime ();
1706 2301
1707 if (now >= self->next) 2302 if (now >= self->next)
1708 { 2303 {
1709 api_cede (); 2304 api_cede (aTHX);
1710 self->next = now + self->every; 2305 self->next = now + self->every;
1711 } 2306 }
1712 2307
1713 return PerlIOBuf_flush (aTHX_ f); 2308 return PerlIOBuf_flush (aTHX_ f);
1714} 2309}
… …
1743 PerlIOBuf_get_ptr, 2338 PerlIOBuf_get_ptr,
1744 PerlIOBuf_get_cnt, 2339 PerlIOBuf_get_cnt,
1745 PerlIOBuf_set_ptrcnt, 2340 PerlIOBuf_set_ptrcnt,
1746}; 2341};
1747 2342
2343/*****************************************************************************/
2344/* Coro::Semaphore & Coro::Signal */
2345
2346static SV *
2347coro_waitarray_new (pTHX_ int count)
2348{
2349 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2350 AV *av = newAV ();
2351 SV **ary;
2352
2353 /* unfortunately, building manually saves memory */
2354 Newx (ary, 2, SV *);
2355 AvALLOC (av) = ary;
2356 /*AvARRAY (av) = ary;*/
2357 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2358 AvMAX (av) = 1;
2359 AvFILLp (av) = 0;
2360 ary [0] = newSViv (count);
2361
2362 return newRV_noinc ((SV *)av);
2363}
2364
2365/* semaphore */
2366
2367static void
2368coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2369{
2370 SV *count_sv = AvARRAY (av)[0];
2371 IV count = SvIVX (count_sv);
2372
2373 count += adjust;
2374 SvIVX (count_sv) = count;
2375
2376 /* now wake up as many waiters as are expected to lock */
2377 while (count > 0 && AvFILLp (av) > 0)
2378 {
2379 SV *cb;
2380
2381 /* swap first two elements so we can shift a waiter */
2382 AvARRAY (av)[0] = AvARRAY (av)[1];
2383 AvARRAY (av)[1] = count_sv;
2384 cb = av_shift (av);
2385
2386 if (SvOBJECT (cb))
2387 {
2388 api_ready (aTHX_ cb);
2389 --count;
2390 }
2391 else if (SvTYPE (cb) == SVt_PVCV)
2392 {
2393 dSP;
2394 PUSHMARK (SP);
2395 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2396 PUTBACK;
2397 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2398 }
2399
2400 SvREFCNT_dec (cb);
2401 }
2402}
2403
2404static void
2405coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2406{
2407 /* call $sem->adjust (0) to possibly wake up some other waiters */
2408 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2409}
2410
2411static int
2412slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2413{
2414 AV *av = (AV *)frame->data;
2415 SV *count_sv = AvARRAY (av)[0];
2416
2417 /* if we are about to throw, don't actually acquire the lock, just throw */
2418 if (CORO_THROW)
2419 return 0;
2420 else if (SvIVX (count_sv) > 0)
2421 {
2422 SvSTATE_current->on_destroy = 0;
2423
2424 if (acquire)
2425 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2426 else
2427 coro_semaphore_adjust (aTHX_ av, 0);
2428
2429 return 0;
2430 }
2431 else
2432 {
2433 int i;
2434 /* if we were woken up but can't down, we look through the whole */
2435 /* waiters list and only add us if we aren't in there already */
2436 /* this avoids some degenerate memory usage cases */
2437
2438 for (i = 1; i <= AvFILLp (av); ++i)
2439 if (AvARRAY (av)[i] == SvRV (coro_current))
2440 return 1;
2441
2442 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2443 return 1;
2444 }
2445}
2446
2447static int
2448slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2449{
2450 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2451}
2452
2453static int
2454slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2455{
2456 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2457}
2458
2459static void
2460slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2461{
2462 AV *av = (AV *)SvRV (arg [0]);
2463
2464 if (SvIVX (AvARRAY (av)[0]) > 0)
2465 {
2466 frame->data = (void *)av;
2467 frame->prepare = prepare_nop;
2468 }
2469 else
2470 {
2471 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2472
2473 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2474 frame->prepare = prepare_schedule;
2475
2476 /* to avoid race conditions when a woken-up coro gets terminated */
2477 /* we arrange for a temporary on_destroy that calls adjust (0) */
2478 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2479 }
2480}
2481
2482static void
2483slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2484{
2485 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2486 frame->check = slf_check_semaphore_down;
2487}
2488
2489static void
2490slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2491{
2492 if (items >= 2)
2493 {
2494 /* callback form */
2495 AV *av = (AV *)SvRV (arg [0]);
2496 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2497
2498 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2499
2500 if (SvIVX (AvARRAY (av)[0]) > 0)
2501 coro_semaphore_adjust (aTHX_ av, 0);
2502
2503 frame->prepare = prepare_nop;
2504 frame->check = slf_check_nop;
2505 }
2506 else
2507 {
2508 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2509 frame->check = slf_check_semaphore_wait;
2510 }
2511}
2512
2513/* signal */
2514
2515static void
2516coro_signal_wake (pTHX_ AV *av, int count)
2517{
2518 SvIVX (AvARRAY (av)[0]) = 0;
2519
2520 /* now signal count waiters */
2521 while (count > 0 && AvFILLp (av) > 0)
2522 {
2523 SV *cb;
2524
2525 /* swap first two elements so we can shift a waiter */
2526 cb = AvARRAY (av)[0];
2527 AvARRAY (av)[0] = AvARRAY (av)[1];
2528 AvARRAY (av)[1] = cb;
2529
2530 cb = av_shift (av);
2531
2532 api_ready (aTHX_ cb);
2533 sv_setiv (cb, 0); /* signal waiter */
2534 SvREFCNT_dec (cb);
2535
2536 --count;
2537 }
2538}
2539
2540static int
2541slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2542{
2543 /* if we are about to throw, also stop waiting */
2544 return SvROK ((SV *)frame->data) && !CORO_THROW;
2545}
2546
2547static void
2548slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2549{
2550 AV *av = (AV *)SvRV (arg [0]);
2551
2552 if (SvIVX (AvARRAY (av)[0]))
2553 {
2554 SvIVX (AvARRAY (av)[0]) = 0;
2555 frame->prepare = prepare_nop;
2556 frame->check = slf_check_nop;
2557 }
2558 else
2559 {
2560 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2561
2562 av_push (av, waiter);
2563
2564 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2565 frame->prepare = prepare_schedule;
2566 frame->check = slf_check_signal_wait;
2567 }
2568}
2569
2570/*****************************************************************************/
2571/* Coro::AIO */
2572
2573#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2574
2575/* helper storage struct */
2576struct io_state
2577{
2578 int errorno;
2579 I32 laststype; /* U16 in 5.10.0 */
2580 int laststatval;
2581 Stat_t statcache;
2582};
2583
2584static void
2585coro_aio_callback (pTHX_ CV *cv)
2586{
2587 dXSARGS;
2588 AV *state = (AV *)GENSUB_ARG;
2589 SV *coro = av_pop (state);
2590 SV *data_sv = newSV (sizeof (struct io_state));
2591
2592 av_extend (state, items - 1);
2593
2594 sv_upgrade (data_sv, SVt_PV);
2595 SvCUR_set (data_sv, sizeof (struct io_state));
2596 SvPOK_only (data_sv);
2597
2598 {
2599 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2600
2601 data->errorno = errno;
2602 data->laststype = PL_laststype;
2603 data->laststatval = PL_laststatval;
2604 data->statcache = PL_statcache;
2605 }
2606
2607 /* now build the result vector out of all the parameters and the data_sv */
2608 {
2609 int i;
2610
2611 for (i = 0; i < items; ++i)
2612 av_push (state, SvREFCNT_inc_NN (ST (i)));
2613 }
2614
2615 av_push (state, data_sv);
2616
2617 api_ready (aTHX_ coro);
2618 SvREFCNT_dec (coro);
2619 SvREFCNT_dec ((AV *)state);
2620}
2621
2622static int
2623slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2624{
2625 AV *state = (AV *)frame->data;
2626
2627 /* if we are about to throw, return early */
2628 /* this does not cancel the aio request, but at least */
2629 /* it quickly returns */
2630 if (CORO_THROW)
2631 return 0;
2632
2633 /* one element that is an RV? repeat! */
2634 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2635 return 1;
2636
2637 /* restore status */
2638 {
2639 SV *data_sv = av_pop (state);
2640 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2641
2642 errno = data->errorno;
2643 PL_laststype = data->laststype;
2644 PL_laststatval = data->laststatval;
2645 PL_statcache = data->statcache;
2646
2647 SvREFCNT_dec (data_sv);
2648 }
2649
2650 /* push result values */
2651 {
2652 dSP;
2653 int i;
2654
2655 EXTEND (SP, AvFILLp (state) + 1);
2656 for (i = 0; i <= AvFILLp (state); ++i)
2657 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2658
2659 PUTBACK;
2660 }
2661
2662 return 0;
2663}
2664
2665static void
2666slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2667{
2668 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2669 SV *coro_hv = SvRV (coro_current);
2670 struct coro *coro = SvSTATE_hv (coro_hv);
2671
2672 /* put our coroutine id on the state arg */
2673 av_push (state, SvREFCNT_inc_NN (coro_hv));
2674
2675 /* first see whether we have a non-zero priority and set it as AIO prio */
2676 if (coro->prio)
2677 {
2678 dSP;
2679
2680 static SV *prio_cv;
2681 static SV *prio_sv;
2682
2683 if (expect_false (!prio_cv))
2684 {
2685 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2686 prio_sv = newSViv (0);
2687 }
2688
2689 PUSHMARK (SP);
2690 sv_setiv (prio_sv, coro->prio);
2691 XPUSHs (prio_sv);
2692
2693 PUTBACK;
2694 call_sv (prio_cv, G_VOID | G_DISCARD);
2695 }
2696
2697 /* now call the original request */
2698 {
2699 dSP;
2700 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2701 int i;
2702
2703 PUSHMARK (SP);
2704
2705 /* first push all args to the stack */
2706 EXTEND (SP, items + 1);
2707
2708 for (i = 0; i < items; ++i)
2709 PUSHs (arg [i]);
2710
2711 /* now push the callback closure */
2712 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2713
2714 /* now call the AIO function - we assume our request is uncancelable */
2715 PUTBACK;
2716 call_sv ((SV *)req, G_VOID | G_DISCARD);
2717 }
2718
2719 /* now that the requets is going, we loop toll we have a result */
2720 frame->data = (void *)state;
2721 frame->prepare = prepare_schedule;
2722 frame->check = slf_check_aio_req;
2723}
2724
2725static void
2726coro_aio_req_xs (pTHX_ CV *cv)
2727{
2728 dXSARGS;
2729
2730 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2731
2732 XSRETURN_EMPTY;
2733}
2734
2735/*****************************************************************************/
2736
2737#if CORO_CLONE
2738# include "clone.c"
2739#endif
1748 2740
1749MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2741MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1750 2742
1751PROTOTYPES: DISABLE 2743PROTOTYPES: DISABLE
1752 2744
1753BOOT: 2745BOOT:
1754{ 2746{
1755#ifdef USE_ITHREADS 2747#ifdef USE_ITHREADS
1756 MUTEX_INIT (&coro_lock); 2748# if CORO_PTHREAD
2749 coro_thx = PERL_GET_CONTEXT;
2750# endif
1757#endif 2751#endif
1758 BOOT_PAGESIZE; 2752 BOOT_PAGESIZE;
2753
2754 cctx_current = cctx_new_empty ();
1759 2755
1760 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2756 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1761 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2757 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1762 2758
1763 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2759 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1779 main_top_env = PL_top_env; 2775 main_top_env = PL_top_env;
1780 2776
1781 while (main_top_env->je_prev) 2777 while (main_top_env->je_prev)
1782 main_top_env = main_top_env->je_prev; 2778 main_top_env = main_top_env->je_prev;
1783 2779
2780 {
2781 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2782
2783 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2784 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2785
2786 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2787 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2788 }
2789
1784 coroapi.ver = CORO_API_VERSION; 2790 coroapi.ver = CORO_API_VERSION;
1785 coroapi.rev = CORO_API_REVISION; 2791 coroapi.rev = CORO_API_REVISION;
2792
1786 coroapi.transfer = api_transfer; 2793 coroapi.transfer = api_transfer;
2794
2795 coroapi.sv_state = SvSTATE_;
2796 coroapi.execute_slf = api_execute_slf;
2797 coroapi.prepare_nop = prepare_nop;
2798 coroapi.prepare_schedule = prepare_schedule;
2799 coroapi.prepare_cede = prepare_cede;
2800 coroapi.prepare_cede_notself = prepare_cede_notself;
1787 2801
1788 { 2802 {
1789 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2803 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1790 2804
1791 if (!svp) croak ("Time::HiRes is required"); 2805 if (!svp) croak ("Time::HiRes is required");
… …
1797 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2811 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1798} 2812}
1799 2813
1800SV * 2814SV *
1801new (char *klass, ...) 2815new (char *klass, ...)
2816 ALIAS:
2817 Coro::new = 1
1802 CODE: 2818 CODE:
1803{ 2819{
1804 struct coro *coro; 2820 struct coro *coro;
1805 MAGIC *mg; 2821 MAGIC *mg;
1806 HV *hv; 2822 HV *hv;
2823 CV *cb;
1807 int i; 2824 int i;
2825
2826 if (items > 1)
2827 {
2828 cb = coro_sv_2cv (aTHX_ ST (1));
2829
2830 if (!ix)
2831 {
2832 if (CvISXSUB (cb))
2833 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2834
2835 if (!CvROOT (cb))
2836 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2837 }
2838 }
1808 2839
1809 Newz (0, coro, 1, struct coro); 2840 Newz (0, coro, 1, struct coro);
1810 coro->args = newAV (); 2841 coro->args = newAV ();
1811 coro->flags = CF_NEW; 2842 coro->flags = CF_NEW;
1812 2843
… …
1817 coro->hv = hv = newHV (); 2848 coro->hv = hv = newHV ();
1818 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2849 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1819 mg->mg_flags |= MGf_DUP; 2850 mg->mg_flags |= MGf_DUP;
1820 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2851 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1821 2852
2853 if (items > 1)
2854 {
1822 av_extend (coro->args, items - 1); 2855 av_extend (coro->args, items - 1 + ix - 1);
2856
2857 if (ix)
2858 {
2859 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2860 cb = cv_coro_run;
2861 }
2862
2863 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2864
1823 for (i = 1; i < items; i++) 2865 for (i = 2; i < items; i++)
1824 av_push (coro->args, newSVsv (ST (i))); 2866 av_push (coro->args, newSVsv (ST (i)));
2867 }
1825} 2868}
1826 OUTPUT: 2869 OUTPUT:
1827 RETVAL 2870 RETVAL
1828 2871
1829# these not obviously related functions are all rolled into the same xs
1830# function to increase chances that they all will call transfer with the same
1831# stack offset
1832void 2872void
1833_set_stacklevel (...) 2873transfer (...)
1834 ALIAS: 2874 PROTOTYPE: $$
1835 Coro::State::transfer = 1 2875 CODE:
1836 Coro::schedule = 2 2876 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1837 Coro::cede = 3
1838 Coro::cede_notself = 4
1839 CODE:
1840{
1841 struct transfer_args ta;
1842
1843 PUTBACK;
1844 switch (ix)
1845 {
1846 case 0:
1847 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1848 ta.next = 0;
1849 break;
1850
1851 case 1:
1852 if (items != 2)
1853 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1854
1855 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1856 break;
1857
1858 case 2:
1859 prepare_schedule (aTHX_ &ta);
1860 break;
1861
1862 case 3:
1863 prepare_cede (aTHX_ &ta);
1864 break;
1865
1866 case 4:
1867 if (!prepare_cede_notself (aTHX_ &ta))
1868 XSRETURN_EMPTY;
1869
1870 break;
1871 }
1872 SPAGAIN;
1873
1874 BARRIER;
1875 PUTBACK;
1876 TRANSFER (ta, 0);
1877 SPAGAIN; /* might be the sp of a different coroutine now */
1878 /* be extra careful not to ever do anything after TRANSFER */
1879}
1880 2877
1881bool 2878bool
1882_destroy (SV *coro_sv) 2879_destroy (SV *coro_sv)
1883 CODE: 2880 CODE:
1884 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2881 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1889_exit (int code) 2886_exit (int code)
1890 PROTOTYPE: $ 2887 PROTOTYPE: $
1891 CODE: 2888 CODE:
1892 _exit (code); 2889 _exit (code);
1893 2890
2891SV *
2892clone (Coro::State coro)
2893 CODE:
2894{
2895#if CORO_CLONE
2896 struct coro *ncoro = coro_clone (coro);
2897 MAGIC *mg;
2898 /* TODO: too much duplication */
2899 ncoro->hv = newHV ();
2900 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2901 mg->mg_flags |= MGf_DUP;
2902 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2903#else
2904 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2905#endif
2906}
2907 OUTPUT:
2908 RETVAL
2909
1894int 2910int
1895cctx_stacksize (int new_stacksize = 0) 2911cctx_stacksize (int new_stacksize = 0)
2912 PROTOTYPE: ;$
1896 CODE: 2913 CODE:
1897 RETVAL = cctx_stacksize; 2914 RETVAL = cctx_stacksize;
1898 if (new_stacksize) 2915 if (new_stacksize)
1899 { 2916 {
1900 cctx_stacksize = new_stacksize; 2917 cctx_stacksize = new_stacksize;
… …
1903 OUTPUT: 2920 OUTPUT:
1904 RETVAL 2921 RETVAL
1905 2922
1906int 2923int
1907cctx_max_idle (int max_idle = 0) 2924cctx_max_idle (int max_idle = 0)
2925 PROTOTYPE: ;$
1908 CODE: 2926 CODE:
1909 RETVAL = cctx_max_idle; 2927 RETVAL = cctx_max_idle;
1910 if (max_idle > 1) 2928 if (max_idle > 1)
1911 cctx_max_idle = max_idle; 2929 cctx_max_idle = max_idle;
1912 OUTPUT: 2930 OUTPUT:
1913 RETVAL 2931 RETVAL
1914 2932
1915int 2933int
1916cctx_count () 2934cctx_count ()
2935 PROTOTYPE:
1917 CODE: 2936 CODE:
1918 RETVAL = cctx_count; 2937 RETVAL = cctx_count;
1919 OUTPUT: 2938 OUTPUT:
1920 RETVAL 2939 RETVAL
1921 2940
1922int 2941int
1923cctx_idle () 2942cctx_idle ()
2943 PROTOTYPE:
1924 CODE: 2944 CODE:
1925 RETVAL = cctx_idle; 2945 RETVAL = cctx_idle;
1926 OUTPUT: 2946 OUTPUT:
1927 RETVAL 2947 RETVAL
1928 2948
1929void 2949void
1930list () 2950list ()
2951 PROTOTYPE:
1931 PPCODE: 2952 PPCODE:
1932{ 2953{
1933 struct coro *coro; 2954 struct coro *coro;
1934 for (coro = coro_first; coro; coro = coro->next) 2955 for (coro = coro_first; coro; coro = coro->next)
1935 if (coro->hv) 2956 if (coro->hv)
… …
1994 RETVAL = boolSV (coro->flags & ix); 3015 RETVAL = boolSV (coro->flags & ix);
1995 OUTPUT: 3016 OUTPUT:
1996 RETVAL 3017 RETVAL
1997 3018
1998void 3019void
3020throw (Coro::State self, SV *throw = &PL_sv_undef)
3021 PROTOTYPE: $;$
3022 CODE:
3023{
3024 struct coro *current = SvSTATE_current;
3025 SV **throwp = self == current ? &CORO_THROW : &self->except;
3026 SvREFCNT_dec (*throwp);
3027 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3028}
3029
3030void
1999api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3031api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3032 PROTOTYPE: $;$
3033 C_ARGS: aTHX_ coro, flags
2000 3034
2001SV * 3035SV *
2002has_cctx (Coro::State coro) 3036has_cctx (Coro::State coro)
2003 PROTOTYPE: $ 3037 PROTOTYPE: $
2004 CODE: 3038 CODE:
2005 RETVAL = boolSV (!!coro->cctx); 3039 /* maybe manage the running flag differently */
3040 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2006 OUTPUT: 3041 OUTPUT:
2007 RETVAL 3042 RETVAL
2008 3043
2009int 3044int
2010is_traced (Coro::State coro) 3045is_traced (Coro::State coro)
… …
2012 CODE: 3047 CODE:
2013 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3048 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2014 OUTPUT: 3049 OUTPUT:
2015 RETVAL 3050 RETVAL
2016 3051
2017IV 3052UV
2018rss (Coro::State coro) 3053rss (Coro::State coro)
2019 PROTOTYPE: $ 3054 PROTOTYPE: $
2020 ALIAS: 3055 ALIAS:
2021 usecount = 1 3056 usecount = 1
2022 CODE: 3057 CODE:
… …
2028 OUTPUT: 3063 OUTPUT:
2029 RETVAL 3064 RETVAL
2030 3065
2031void 3066void
2032force_cctx () 3067force_cctx ()
3068 PROTOTYPE:
2033 CODE: 3069 CODE:
2034 struct coro *coro = SvSTATE (coro_current);
2035 coro->cctx->idle_sp = 0; 3070 cctx_current->idle_sp = 0;
2036 3071
2037void 3072void
2038swap_defsv (Coro::State self) 3073swap_defsv (Coro::State self)
2039 PROTOTYPE: $ 3074 PROTOTYPE: $
2040 ALIAS: 3075 ALIAS:
2041 swap_defav = 1 3076 swap_defav = 1
2042 CODE: 3077 CODE:
2043 if (!self->slot) 3078 if (!self->slot)
2044 croak ("cannot swap state with coroutine that has no saved state"); 3079 croak ("cannot swap state with coroutine that has no saved state,");
2045 else 3080 else
2046 { 3081 {
2047 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3082 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2048 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3083 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2049 3084
2050 SV *tmp = *src; *src = *dst; *dst = tmp; 3085 SV *tmp = *src; *src = *dst; *dst = tmp;
2051 } 3086 }
2052 3087
3088
2053MODULE = Coro::State PACKAGE = Coro 3089MODULE = Coro::State PACKAGE = Coro
2054 3090
2055BOOT: 3091BOOT:
2056{ 3092{
2057 int i; 3093 int i;
2058 3094
2059 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2060 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3095 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2061 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3096 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2062 3097 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3098 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2063 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3099 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2064 SvREADONLY_on (coro_current); 3100 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3101 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3102 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3103
3104 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3105 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3106 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3107 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2065 3108
2066 coro_stash = gv_stashpv ("Coro", TRUE); 3109 coro_stash = gv_stashpv ("Coro", TRUE);
2067 3110
2068 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3111 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2069 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3112 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2074 3117
2075 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3118 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2076 coro_ready[i] = newAV (); 3119 coro_ready[i] = newAV ();
2077 3120
2078 { 3121 {
2079 SV *sv = perl_get_sv ("Coro::API", TRUE); 3122 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2080 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2081 3123
2082 coroapi.schedule = api_schedule; 3124 coroapi.schedule = api_schedule;
3125 coroapi.schedule_to = api_schedule_to;
2083 coroapi.cede = api_cede; 3126 coroapi.cede = api_cede;
2084 coroapi.cede_notself = api_cede_notself; 3127 coroapi.cede_notself = api_cede_notself;
2085 coroapi.ready = api_ready; 3128 coroapi.ready = api_ready;
2086 coroapi.is_ready = api_is_ready; 3129 coroapi.is_ready = api_is_ready;
2087 coroapi.nready = &coro_nready; 3130 coroapi.nready = coro_nready;
2088 coroapi.current = coro_current; 3131 coroapi.current = coro_current;
2089 3132
2090 GCoroAPI = &coroapi; 3133 /*GCoroAPI = &coroapi;*/
2091 sv_setiv (sv, (IV)&coroapi); 3134 sv_setiv (sv, (IV)&coroapi);
2092 SvREADONLY_on (sv); 3135 SvREADONLY_on (sv);
2093 } 3136 }
2094} 3137}
3138
3139void
3140terminate (...)
3141 CODE:
3142 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3143
3144void
3145schedule (...)
3146 CODE:
3147 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3148
3149void
3150schedule_to (...)
3151 CODE:
3152 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3153
3154void
3155cede_to (...)
3156 CODE:
3157 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3158
3159void
3160cede (...)
3161 CODE:
3162 CORO_EXECUTE_SLF_XS (slf_init_cede);
3163
3164void
3165cede_notself (...)
3166 CODE:
3167 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3168
3169void
3170_cancel (Coro::State self)
3171 CODE:
3172 coro_state_destroy (aTHX_ self);
3173 coro_call_on_destroy (aTHX_ self);
2095 3174
2096void 3175void
2097_set_current (SV *current) 3176_set_current (SV *current)
2098 PROTOTYPE: $ 3177 PROTOTYPE: $
2099 CODE: 3178 CODE:
… …
2102 3181
2103void 3182void
2104_set_readyhook (SV *hook) 3183_set_readyhook (SV *hook)
2105 PROTOTYPE: $ 3184 PROTOTYPE: $
2106 CODE: 3185 CODE:
2107 LOCK;
2108 SvREFCNT_dec (coro_readyhook); 3186 SvREFCNT_dec (coro_readyhook);
2109 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3187 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2110 UNLOCK;
2111 3188
2112int 3189int
2113prio (Coro::State coro, int newprio = 0) 3190prio (Coro::State coro, int newprio = 0)
3191 PROTOTYPE: $;$
2114 ALIAS: 3192 ALIAS:
2115 nice = 1 3193 nice = 1
2116 CODE: 3194 CODE:
2117{ 3195{
2118 RETVAL = coro->prio; 3196 RETVAL = coro->prio;
… …
2133 3211
2134SV * 3212SV *
2135ready (SV *self) 3213ready (SV *self)
2136 PROTOTYPE: $ 3214 PROTOTYPE: $
2137 CODE: 3215 CODE:
2138 RETVAL = boolSV (api_ready (self)); 3216 RETVAL = boolSV (api_ready (aTHX_ self));
2139 OUTPUT: 3217 OUTPUT:
2140 RETVAL 3218 RETVAL
2141 3219
2142int 3220int
2143nready (...) 3221nready (...)
… …
2146 RETVAL = coro_nready; 3224 RETVAL = coro_nready;
2147 OUTPUT: 3225 OUTPUT:
2148 RETVAL 3226 RETVAL
2149 3227
2150void 3228void
2151throw (Coro::State self, SV *throw = &PL_sv_undef) 3229_pool_handler (...)
2152 PROTOTYPE: $;$ 3230 CODE:
2153 CODE: 3231 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2154 SvREFCNT_dec (self->throw);
2155 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2156 3232
2157# for async_pool speedup
2158void 3233void
2159_pool_1 (SV *cb) 3234async_pool (SV *cv, ...)
3235 PROTOTYPE: &@
3236 PPCODE:
3237{
3238 HV *hv = (HV *)av_pop (av_async_pool);
3239 AV *av = newAV ();
3240 SV *cb = ST (0);
3241 int i;
3242
3243 av_extend (av, items - 2);
3244 for (i = 1; i < items; ++i)
3245 av_push (av, SvREFCNT_inc_NN (ST (i)));
3246
3247 if ((SV *)hv == &PL_sv_undef)
3248 {
3249 PUSHMARK (SP);
3250 EXTEND (SP, 2);
3251 PUSHs (sv_Coro);
3252 PUSHs ((SV *)cv_pool_handler);
3253 PUTBACK;
3254 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3255 SPAGAIN;
3256
3257 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3258 }
3259
3260 {
3261 struct coro *coro = SvSTATE_hv (hv);
3262
3263 assert (!coro->invoke_cb);
3264 assert (!coro->invoke_av);
3265 coro->invoke_cb = SvREFCNT_inc (cb);
3266 coro->invoke_av = av;
3267 }
3268
3269 api_ready (aTHX_ (SV *)hv);
3270
3271 if (GIMME_V != G_VOID)
3272 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3273 else
3274 SvREFCNT_dec (hv);
3275}
3276
3277SV *
3278rouse_cb ()
3279 PROTOTYPE:
2160 CODE: 3280 CODE:
2161{ 3281 RETVAL = coro_new_rouse_cb (aTHX);
2162 struct coro *coro = SvSTATE (coro_current);
2163 HV *hv = (HV *)SvRV (coro_current);
2164 AV *defav = GvAV (PL_defgv);
2165 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2166 AV *invoke_av;
2167 int i, len;
2168
2169 if (!invoke)
2170 {
2171 SV *old = PL_diehook;
2172 PL_diehook = 0;
2173 SvREFCNT_dec (old);
2174 croak ("\3async_pool terminate\2\n");
2175 }
2176
2177 SvREFCNT_dec (coro->saved_deffh);
2178 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2179
2180 hv_store (hv, "desc", sizeof ("desc") - 1,
2181 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2182
2183 invoke_av = (AV *)SvRV (invoke);
2184 len = av_len (invoke_av);
2185
2186 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2187
2188 if (len > 0)
2189 {
2190 av_fill (defav, len - 1);
2191 for (i = 0; i < len; ++i)
2192 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2193 }
2194
2195 SvREFCNT_dec (invoke);
2196}
2197
2198void
2199_pool_2 (SV *cb)
2200 CODE:
2201{
2202 struct coro *coro = SvSTATE (coro_current);
2203
2204 sv_setsv (cb, &PL_sv_undef);
2205
2206 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2207 coro->saved_deffh = 0;
2208
2209 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2210 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2211 {
2212 SV *old = PL_diehook;
2213 PL_diehook = 0;
2214 SvREFCNT_dec (old);
2215 croak ("\3async_pool terminate\2\n");
2216 }
2217
2218 av_clear (GvAV (PL_defgv));
2219 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2220 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2221
2222 coro->prio = 0;
2223
2224 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2225 api_trace (coro_current, 0);
2226
2227 av_push (av_async_pool, newSVsv (coro_current));
2228}
2229
2230#if 0
2231
2232void
2233_generator_call (...)
2234 PROTOTYPE: @
2235 PPCODE:
2236 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2237 xxxx
2238 abort ();
2239
2240SV *
2241gensub (SV *sub, ...)
2242 PROTOTYPE: &;@
2243 CODE:
2244{
2245 struct coro *coro;
2246 MAGIC *mg;
2247 CV *xcv;
2248 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2249 int i;
2250
2251 CvGV (ncv) = CvGV (cv);
2252 CvFILE (ncv) = CvFILE (cv);
2253
2254 Newz (0, coro, 1, struct coro);
2255 coro->args = newAV ();
2256 coro->flags = CF_NEW;
2257
2258 av_extend (coro->args, items - 1);
2259 for (i = 1; i < items; i++)
2260 av_push (coro->args, newSVsv (ST (i)));
2261
2262 CvISXSUB_on (ncv);
2263 CvXSUBANY (ncv).any_ptr = (void *)coro;
2264
2265 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2266
2267 CvXSUB (ncv) = CvXSUB (xcv);
2268 CvANON_on (ncv);
2269
2270 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2271 RETVAL = newRV_noinc ((SV *)ncv);
2272}
2273 OUTPUT: 3282 OUTPUT:
2274 RETVAL 3283 RETVAL
2275 3284
2276#endif
2277
2278
2279MODULE = Coro::State PACKAGE = Coro::AIO
2280
2281void 3285void
2282_get_state (SV *self) 3286rouse_wait (...)
3287 PROTOTYPE: ;$
2283 PPCODE: 3288 PPCODE:
2284{ 3289 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2285 AV *defav = GvAV (PL_defgv);
2286 AV *av = newAV ();
2287 int i;
2288 SV *data_sv = newSV (sizeof (struct io_state));
2289 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2290 SvCUR_set (data_sv, sizeof (struct io_state));
2291 SvPOK_only (data_sv);
2292 3290
2293 data->errorno = errno;
2294 data->laststype = PL_laststype;
2295 data->laststatval = PL_laststatval;
2296 data->statcache = PL_statcache;
2297 3291
2298 av_extend (av, AvFILLp (defav) + 1 + 1); 3292MODULE = Coro::State PACKAGE = PerlIO::cede
2299 3293
2300 for (i = 0; i <= AvFILLp (defav); ++i) 3294BOOT:
2301 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3295 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2302 3296
2303 av_push (av, data_sv);
2304 3297
2305 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3298MODULE = Coro::State PACKAGE = Coro::Semaphore
2306 3299
2307 api_ready (self); 3300SV *
2308} 3301new (SV *klass, SV *count = 0)
3302 CODE:
3303 RETVAL = sv_bless (
3304 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3305 GvSTASH (CvGV (cv))
3306 );
3307 OUTPUT:
3308 RETVAL
3309
3310# helper for Coro::Channel
3311SV *
3312_alloc (int count)
3313 CODE:
3314 RETVAL = coro_waitarray_new (aTHX_ count);
3315 OUTPUT:
3316 RETVAL
3317
3318SV *
3319count (SV *self)
3320 CODE:
3321 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3322 OUTPUT:
3323 RETVAL
2309 3324
2310void 3325void
2311_set_state (SV *state) 3326up (SV *self, int adjust = 1)
2312 PROTOTYPE: $ 3327 ALIAS:
3328 adjust = 1
3329 CODE:
3330 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3331
3332void
3333down (...)
3334 CODE:
3335 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3336
3337void
3338wait (...)
3339 CODE:
3340 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3341
3342void
3343try (SV *self)
3344 PPCODE:
3345{
3346 AV *av = (AV *)SvRV (self);
3347 SV *count_sv = AvARRAY (av)[0];
3348 IV count = SvIVX (count_sv);
3349
3350 if (count > 0)
3351 {
3352 --count;
3353 SvIVX (count_sv) = count;
3354 XSRETURN_YES;
3355 }
3356 else
3357 XSRETURN_NO;
3358}
3359
3360void
3361waiters (SV *self)
3362 PPCODE:
3363{
3364 AV *av = (AV *)SvRV (self);
3365 int wcount = AvFILLp (av) + 1 - 1;
3366
3367 if (GIMME_V == G_SCALAR)
3368 XPUSHs (sv_2mortal (newSViv (wcount)));
3369 else
3370 {
3371 int i;
3372 EXTEND (SP, wcount);
3373 for (i = 1; i <= wcount; ++i)
3374 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3375 }
3376}
3377
3378MODULE = Coro::State PACKAGE = Coro::Signal
3379
3380SV *
3381new (SV *klass)
2313 PPCODE: 3382 CODE:
3383 RETVAL = sv_bless (
3384 coro_waitarray_new (aTHX_ 0),
3385 GvSTASH (CvGV (cv))
3386 );
3387 OUTPUT:
3388 RETVAL
3389
3390void
3391wait (...)
3392 CODE:
3393 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3394
3395void
3396broadcast (SV *self)
3397 CODE:
2314{ 3398{
2315 AV *av = (AV *)SvRV (state); 3399 AV *av = (AV *)SvRV (self);
2316 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3400 coro_signal_wake (aTHX_ av, AvFILLp (av));
2317 int i; 3401}
2318 3402
2319 errno = data->errorno; 3403void
2320 PL_laststype = data->laststype; 3404send (SV *self)
2321 PL_laststatval = data->laststatval; 3405 CODE:
2322 PL_statcache = data->statcache; 3406{
3407 AV *av = (AV *)SvRV (self);
2323 3408
2324 EXTEND (SP, AvFILLp (av)); 3409 if (AvFILLp (av))
2325 for (i = 0; i < AvFILLp (av); ++i) 3410 coro_signal_wake (aTHX_ av, 1);
2326 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3411 else
3412 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2327} 3413}
3414
3415IV
3416awaited (SV *self)
3417 CODE:
3418 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3419 OUTPUT:
3420 RETVAL
2328 3421
2329 3422
2330MODULE = Coro::State PACKAGE = Coro::AnyEvent 3423MODULE = Coro::State PACKAGE = Coro::AnyEvent
2331 3424
2332BOOT: 3425BOOT:
2333 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3426 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2334 3427
2335SV * 3428void
2336_schedule (...) 3429_schedule (...)
2337 PROTOTYPE: @
2338 CODE: 3430 CODE:
2339{ 3431{
2340 static int incede; 3432 static int incede;
2341 3433
2342 api_cede_notself (); 3434 api_cede_notself (aTHX);
2343 3435
2344 ++incede; 3436 ++incede;
2345 while (coro_nready >= incede && api_cede ()) 3437 while (coro_nready >= incede && api_cede (aTHX))
2346 ; 3438 ;
2347 3439
2348 sv_setsv (sv_activity, &PL_sv_undef); 3440 sv_setsv (sv_activity, &PL_sv_undef);
2349 if (coro_nready >= incede) 3441 if (coro_nready >= incede)
2350 { 3442 {
2351 PUSHMARK (SP); 3443 PUSHMARK (SP);
2352 PUTBACK; 3444 PUTBACK;
2353 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3445 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2354 SPAGAIN;
2355 } 3446 }
2356 3447
2357 --incede; 3448 --incede;
2358} 3449}
2359 3450
2360 3451
2361MODULE = Coro::State PACKAGE = PerlIO::cede 3452MODULE = Coro::State PACKAGE = Coro::AIO
2362 3453
2363BOOT: 3454void
2364 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3455_register (char *target, char *proto, SV *req)
3456 CODE:
3457{
3458 CV *req_cv = coro_sv_2cv (aTHX_ req);
3459 /* newXSproto doesn't return the CV on 5.8 */
3460 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3461 sv_setpv ((SV *)slf_cv, proto);
3462 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3463}
3464

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