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Comparing Coro/Coro/State.xs (file contents):
Revision 1.250 by root, Wed Oct 22 16:34:07 2008 UTC vs.
Revision 1.317 by root, Thu Nov 20 06:28:52 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
58 55
59#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
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
… …
81# ifndef IS_PADCONST 78# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
83# endif 80# endif
84#endif 81#endif
85 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
86/* 5.8.8 */ 93/* 5.8.8 */
87#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
88# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
89#endif 96#endif
90#ifndef newSV 97#ifndef newSV
91# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
92#endif 99#endif
93#ifndef SvREFCNT_inc_NN 100#ifndef CvISXSUB_on
94# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) 101# define CvISXSUB_on(cv) (void)cv
95#endif 102#endif
96 103#ifndef CvISXSUB
97/* 5.11 */ 104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
98#ifndef CxHASARGS
99# define CxHASARGS(cx) (cx)->blk_sub.hasargs
100#endif 105#endif
101 106
102/* 5.8.7 */ 107/* 5.8.7 */
103#ifndef SvRV_set 108#ifndef SvRV_set
104# define SvRV_set(s,v) SvRV(s) = (v) 109# define SvRV_set(s,v) SvRV(s) = (v)
… …
117# define CORO_PREFER_PERL_FUNCTIONS 0 122# define CORO_PREFER_PERL_FUNCTIONS 0
118#endif 123#endif
119 124
120/* The next macros try to return the current stack pointer, in an as 125/* The next macros try to return the current stack pointer, in an as
121 * portable way as possible. */ 126 * portable way as possible. */
127#if __GNUC__ >= 4
128# define dSTACKLEVEL int stacklevel_dummy
129# define STACKLEVEL __builtin_frame_address (0)
130#else
122#define dSTACKLEVEL volatile char stacklevel 131# define dSTACKLEVEL volatile void *stacklevel
123#define STACKLEVEL ((void *)&stacklevel) 132# define STACKLEVEL ((void *)&stacklevel)
133#endif
124 134
125#define IN_DESTRUCT (PL_main_cv == Nullcv) 135#define IN_DESTRUCT (PL_main_cv == Nullcv)
126 136
127#if __GNUC__ >= 3 137#if __GNUC__ >= 3
128# define attribute(x) __attribute__(x) 138# define attribute(x) __attribute__(x)
129# define BARRIER __asm__ __volatile__ ("" : : : "memory")
130# define expect(expr,value) __builtin_expect ((expr),(value)) 139# define expect(expr,value) __builtin_expect ((expr),(value))
140# define INLINE static inline
131#else 141#else
132# define attribute(x) 142# define attribute(x)
133# define BARRIER
134# define expect(expr,value) (expr) 143# define expect(expr,value) (expr)
144# define INLINE static
135#endif 145#endif
136 146
137#define expect_false(expr) expect ((expr) != 0, 0) 147#define expect_false(expr) expect ((expr) != 0, 0)
138#define expect_true(expr) expect ((expr) != 0, 1) 148#define expect_true(expr) expect ((expr) != 0, 1)
139 149
140#define NOINLINE attribute ((noinline)) 150#define NOINLINE attribute ((noinline))
141 151
142#include "CoroAPI.h" 152#include "CoroAPI.h"
153#define GCoroAPI (&coroapi) /* very sneaky */
143 154
144#ifdef USE_ITHREADS 155#ifdef USE_ITHREADS
145static perl_mutex coro_mutex; 156# if CORO_PTHREAD
146# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 157static void *coro_thx;
147# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
148#else
149# define LOCK (void)0
150# define UNLOCK (void)0
151#endif 158# endif
152 159#endif
153/* helper storage struct for Coro::AIO */
154struct io_state
155{
156 AV *res;
157 int errorno;
158 I32 laststype;
159 int laststatval;
160 Stat_t statcache;
161};
162 160
163static double (*nvtime)(); /* so why doesn't it take void? */ 161static double (*nvtime)(); /* so why doesn't it take void? */
164 162
163/* we hijack an hopefully unused CV flag for our purposes */
164#define CVf_SLF 0x4000
165static OP *pp_slf (pTHX);
166
167static U32 cctx_gen;
165static size_t coro_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 171static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 174
172static GV *irsgv; /* $/ */ 175static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 176static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 177static SV *rv_diehook;
175static SV *rv_warnhook; 178static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 179static HV *hv_sig; /* %SIG */
177 180
178/* async_pool helper stuff */ 181/* async_pool helper stuff */
179static SV *sv_pool_rss; 182static SV *sv_pool_rss;
180static SV *sv_pool_size; 183static SV *sv_pool_size;
184static SV *sv_async_pool_idle;
181static AV *av_async_pool; 185static AV *av_async_pool;
186static SV *sv_Coro;
187static CV *cv_pool_handler;
188static CV *cv_coro_state_new;
182 189
183/* Coro::AnyEvent */ 190/* Coro::AnyEvent */
184static SV *sv_activity; 191static SV *sv_activity;
185 192
186static struct coro_cctx *cctx_first; 193static struct coro_cctx *cctx_first;
… …
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 201 CC_TRACE_LINE = 0x10, /* trace each statement */
195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 202 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
196}; 203};
197 204
198/* this is a structure representing a c-level coroutine */ 205/* this is a structure representing a c-level coroutine */
199typedef struct coro_cctx { 206typedef struct coro_cctx
207{
200 struct coro_cctx *next; 208 struct coro_cctx *next;
201 209
202 /* the stack */ 210 /* the stack */
203 void *sptr; 211 void *sptr;
204 size_t ssize; 212 size_t ssize;
… …
207 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 215 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
208 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 216 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
209 JMPENV *top_env; 217 JMPENV *top_env;
210 coro_context cctx; 218 coro_context cctx;
211 219
220 U32 gen;
212#if CORO_USE_VALGRIND 221#if CORO_USE_VALGRIND
213 int valgrind_id; 222 int valgrind_id;
214#endif 223#endif
215 unsigned char flags; 224 unsigned char flags;
216} coro_cctx; 225} coro_cctx;
… …
221 CF_NEW = 0x0004, /* has never been switched to */ 230 CF_NEW = 0x0004, /* has never been switched to */
222 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 231 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
223}; 232};
224 233
225/* the structure where most of the perl state is stored, overlaid on the cxstack */ 234/* the structure where most of the perl state is stored, overlaid on the cxstack */
226typedef struct { 235typedef struct
236{
227 SV *defsv; 237 SV *defsv;
228 AV *defav; 238 AV *defav;
229 SV *errsv; 239 SV *errsv;
230 SV *irsgv; 240 SV *irsgv;
231#define VAR(name,type) type name; 241#define VAR(name,type) type name;
… …
235 245
236#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 246#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
237 247
238/* this is a structure representing a perl-level coroutine */ 248/* this is a structure representing a perl-level coroutine */
239struct coro { 249struct coro {
240 /* the c coroutine allocated to this perl coroutine, if any */ 250 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx; 251 coro_cctx *cctx;
242 252
243 /* process data */ 253 /* state data */
254 struct CoroSLF slf_frame; /* saved slf frame */
244 AV *mainstack; 255 AV *mainstack;
245 perl_slots *slot; /* basically the saved sp */ 256 perl_slots *slot; /* basically the saved sp */
246 257
258 CV *startcv; /* the CV to execute */
247 AV *args; /* data associated with this coroutine (initial args) */ 259 AV *args; /* data associated with this coroutine (initial args) */
248 int refcnt; /* coroutines are refcounted, yes */ 260 int refcnt; /* coroutines are refcounted, yes */
249 int flags; /* CF_ flags */ 261 int flags; /* CF_ flags */
250 HV *hv; /* the perl hash associated with this coro, if any */ 262 HV *hv; /* the perl hash associated with this coro, if any */
263 void (*on_destroy)(pTHX_ struct coro *coro);
251 264
252 /* statistics */ 265 /* statistics */
253 int usecount; /* number of transfers to this coro */ 266 int usecount; /* number of transfers to this coro */
254 267
255 /* coro process data */ 268 /* coro process data */
256 int prio; 269 int prio;
257 SV *throw; /* exception to be thrown */ 270 SV *except; /* exception to be thrown */
271 SV *rouse_cb;
258 272
259 /* async_pool */ 273 /* async_pool */
260 SV *saved_deffh; 274 SV *saved_deffh;
275 SV *invoke_cb;
276 AV *invoke_av;
261 277
262 /* linked list */ 278 /* linked list */
263 struct coro *next, *prev; 279 struct coro *next, *prev;
264}; 280};
265 281
266typedef struct coro *Coro__State; 282typedef struct coro *Coro__State;
267typedef struct coro *Coro__State_or_hashref; 283typedef struct coro *Coro__State_or_hashref;
284
285/* the following variables are effectively part of the perl context */
286/* and get copied between struct coro and these variables */
287/* the mainr easonw e don't support windows process emulation */
288static struct CoroSLF slf_frame; /* the current slf frame */
268 289
269/** Coro ********************************************************************/ 290/** Coro ********************************************************************/
270 291
271#define PRIO_MAX 3 292#define PRIO_MAX 3
272#define PRIO_HIGH 1 293#define PRIO_HIGH 1
… …
276#define PRIO_MIN -4 297#define PRIO_MIN -4
277 298
278/* for Coro.pm */ 299/* for Coro.pm */
279static SV *coro_current; 300static SV *coro_current;
280static SV *coro_readyhook; 301static SV *coro_readyhook;
281static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 302static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
282static int coro_nready; 303static CV *cv_coro_run, *cv_coro_terminate;
283static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
284 306
285/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
286 308
287static SV * 309static SV *
288coro_get_sv (pTHX_ const char *name, int create) 310coro_get_sv (pTHX_ const char *name, int create)
… …
310#if PERL_VERSION_ATLEAST (5,10,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
311 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
312 get_hv (name, create); 334 get_hv (name, create);
313#endif 335#endif
314 return get_hv (name, create); 336 return get_hv (name, create);
337}
338
339/* may croak */
340INLINE CV *
341coro_sv_2cv (pTHX_ SV *sv)
342{
343 HV *st;
344 GV *gvp;
345 return sv_2cv (sv, &st, &gvp, 0);
315} 346}
316 347
317static AV * 348static AV *
318coro_clone_padlist (pTHX_ CV *cv) 349coro_clone_padlist (pTHX_ CV *cv)
319{ 350{
… …
373 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 404 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
374 405
375 return 0; 406 return 0;
376} 407}
377 408
378#define CORO_MAGIC_type_cv PERL_MAGIC_ext 409#define CORO_MAGIC_type_cv 26
379#define CORO_MAGIC_type_state PERL_MAGIC_ext 410#define CORO_MAGIC_type_state PERL_MAGIC_ext
380 411
381static MGVTBL coro_cv_vtbl = { 412static MGVTBL coro_cv_vtbl = {
382 0, 0, 0, 0, 413 0, 0, 0, 0,
383 coro_cv_free 414 coro_cv_free
384}; 415};
385 416
417#define CORO_MAGIC_NN(sv, type) \
418 (expect_true (SvMAGIC (sv)->mg_type == type) \
419 ? SvMAGIC (sv) \
420 : mg_find (sv, type))
421
386#define CORO_MAGIC(sv,type) \ 422#define CORO_MAGIC(sv, type) \
387 SvMAGIC (sv) \ 423 (expect_true (SvMAGIC (sv)) \
388 ? SvMAGIC (sv)->mg_type == type \ 424 ? CORO_MAGIC_NN (sv, type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type) \
391 : 0 425 : 0)
392 426
393#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 427#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
394#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 428#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
395 429
396static struct coro * 430INLINE struct coro *
397SvSTATE_ (pTHX_ SV *coro) 431SvSTATE_ (pTHX_ SV *coro)
398{ 432{
399 HV *stash; 433 HV *stash;
400 MAGIC *mg; 434 MAGIC *mg;
401 435
… …
416 mg = CORO_MAGIC_state (coro); 450 mg = CORO_MAGIC_state (coro);
417 return (struct coro *)mg->mg_ptr; 451 return (struct coro *)mg->mg_ptr;
418} 452}
419 453
420#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 454#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
455
456/* faster than SvSTATE, but expects a coroutine hv */
457#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
458#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
421 459
422/* the next two functions merely cache the padlists */ 460/* the next two functions merely cache the padlists */
423static void 461static void
424get_padlist (pTHX_ CV *cv) 462get_padlist (pTHX_ CV *cv)
425{ 463{
… …
431 else 469 else
432 { 470 {
433#if CORO_PREFER_PERL_FUNCTIONS 471#if CORO_PREFER_PERL_FUNCTIONS
434 /* this is probably cleaner? but also slower! */ 472 /* this is probably cleaner? but also slower! */
435 /* in practise, it seems to be less stable */ 473 /* in practise, it seems to be less stable */
436 CV *cp = Perl_cv_clone (cv); 474 CV *cp = Perl_cv_clone (aTHX_ cv);
437 CvPADLIST (cv) = CvPADLIST (cp); 475 CvPADLIST (cv) = CvPADLIST (cp);
438 CvPADLIST (cp) = 0; 476 CvPADLIST (cp) = 0;
439 SvREFCNT_dec (cp); 477 SvREFCNT_dec (cp);
440#else 478#else
441 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 479 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
492 CvPADLIST (cv) = (AV *)POPs; 530 CvPADLIST (cv) = (AV *)POPs;
493 } 531 }
494 532
495 PUTBACK; 533 PUTBACK;
496 } 534 }
535
536 slf_frame = c->slf_frame;
537 CORO_THROW = c->except;
497} 538}
498 539
499static void 540static void
500save_perl (pTHX_ Coro__State c) 541save_perl (pTHX_ Coro__State c)
501{ 542{
543 c->except = CORO_THROW;
544 c->slf_frame = slf_frame;
545
502 { 546 {
503 dSP; 547 dSP;
504 I32 cxix = cxstack_ix; 548 I32 cxix = cxstack_ix;
505 PERL_CONTEXT *ccstk = cxstack; 549 PERL_CONTEXT *ccstk = cxstack;
506 PERL_SI *top_si = PL_curstackinfo; 550 PERL_SI *top_si = PL_curstackinfo;
… …
573 #undef VAR 617 #undef VAR
574 } 618 }
575} 619}
576 620
577/* 621/*
578 * allocate various perl stacks. This is an exact copy 622 * allocate various perl stacks. This is almost an exact copy
579 * of perl.c:init_stacks, except that it uses less memory 623 * of perl.c:init_stacks, except that it uses less memory
580 * on the (sometimes correct) assumption that coroutines do 624 * on the (sometimes correct) assumption that coroutines do
581 * not usually need a lot of stackspace. 625 * not usually need a lot of stackspace.
582 */ 626 */
583#if CORO_PREFER_PERL_FUNCTIONS 627#if CORO_PREFER_PERL_FUNCTIONS
584# define coro_init_stacks init_stacks 628# define coro_init_stacks(thx) init_stacks ()
585#else 629#else
586static void 630static void
587coro_init_stacks (pTHX) 631coro_init_stacks (pTHX)
588{ 632{
589 PL_curstackinfo = new_stackinfo(32, 8); 633 PL_curstackinfo = new_stackinfo(32, 8);
… …
626 670
627/* 671/*
628 * destroy the stacks, the callchain etc... 672 * destroy the stacks, the callchain etc...
629 */ 673 */
630static void 674static void
631coro_destroy_stacks (pTHX) 675coro_destruct_stacks (pTHX)
632{ 676{
633 while (PL_curstackinfo->si_next) 677 while (PL_curstackinfo->si_next)
634 PL_curstackinfo = PL_curstackinfo->si_next; 678 PL_curstackinfo = PL_curstackinfo->si_next;
635 679
636 while (PL_curstackinfo) 680 while (PL_curstackinfo)
… …
652#if !PERL_VERSION_ATLEAST (5,10,0) 696#if !PERL_VERSION_ATLEAST (5,10,0)
653 Safefree (PL_retstack); 697 Safefree (PL_retstack);
654#endif 698#endif
655} 699}
656 700
701#define CORO_RSS \
702 rss += sizeof (SYM (curstackinfo)); \
703 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
705 rss += SYM (tmps_max) * sizeof (SV *); \
706 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
707 rss += SYM (scopestack_max) * sizeof (I32); \
708 rss += SYM (savestack_max) * sizeof (ANY);
709
657static size_t 710static size_t
658coro_rss (pTHX_ struct coro *coro) 711coro_rss (pTHX_ struct coro *coro)
659{ 712{
660 size_t rss = sizeof (*coro); 713 size_t rss = sizeof (*coro);
661 714
662 if (coro->mainstack) 715 if (coro->mainstack)
663 { 716 {
664 perl_slots tmp_slot;
665 perl_slots *slot;
666
667 if (coro->flags & CF_RUNNING) 717 if (coro->flags & CF_RUNNING)
668 { 718 {
669 slot = &tmp_slot; 719 #define SYM(sym) PL_ ## sym
670 720 CORO_RSS;
671 #define VAR(name,type) slot->name = PL_ ## name;
672 # include "state.h"
673 #undef VAR 721 #undef SYM
674 } 722 }
675 else 723 else
676 slot = coro->slot;
677
678 if (slot)
679 { 724 {
680 rss += sizeof (slot->curstackinfo); 725 #define SYM(sym) coro->slot->sym
681 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 726 CORO_RSS;
682 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 727 #undef SYM
683 rss += slot->tmps_max * sizeof (SV *);
684 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
685 rss += slot->scopestack_max * sizeof (I32);
686 rss += slot->savestack_max * sizeof (ANY);
687
688#if !PERL_VERSION_ATLEAST (5,10,0)
689 rss += slot->retstack_max * sizeof (OP *);
690#endif
691 } 728 }
692 } 729 }
693 730
694 return rss; 731 return rss;
695} 732}
… …
785 822
786 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 823 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
787} 824}
788 825
789static void 826static void
827prepare_nop (pTHX_ struct coro_transfer_args *ta)
828{
829 /* kind of mega-hacky, but works */
830 ta->next = ta->prev = (struct coro *)ta;
831}
832
833static int
834slf_check_nop (pTHX_ struct CoroSLF *frame)
835{
836 return 0;
837}
838
839static UNOP coro_setup_op;
840
841static void NOINLINE /* noinline to keep it out of the transfer fast path */
790coro_setup (pTHX_ struct coro *coro) 842coro_setup (pTHX_ struct coro *coro)
791{ 843{
792 /* 844 /*
793 * emulate part of the perl startup here. 845 * emulate part of the perl startup here.
794 */ 846 */
… …
818 PL_rs = newSVsv (GvSV (irsgv)); 870 PL_rs = newSVsv (GvSV (irsgv));
819 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 871 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
820 872
821 { 873 {
822 dSP; 874 dSP;
823 LOGOP myop; 875 UNOP myop;
824 876
825 Zero (&myop, 1, LOGOP); 877 Zero (&myop, 1, UNOP);
826 myop.op_next = Nullop; 878 myop.op_next = Nullop;
879 myop.op_type = OP_ENTERSUB;
827 myop.op_flags = OPf_WANT_VOID; 880 myop.op_flags = OPf_WANT_VOID;
828 881
829 PUSHMARK (SP); 882 PUSHMARK (SP);
830 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 883 PUSHs ((SV *)coro->startcv);
831 PUTBACK; 884 PUTBACK;
832 PL_op = (OP *)&myop; 885 PL_op = (OP *)&myop;
833 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 886 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
834 SPAGAIN;
835 } 887 }
836 888
837 /* this newly created coroutine might be run on an existing cctx which most 889 /* this newly created coroutine might be run on an existing cctx which most
838 * likely was suspended in set_stacklevel, called from entersub. 890 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
839 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
840 * so we ENTER here for symmetry
841 */ 891 */
842 ENTER; 892 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
843} 893 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
844 894
895 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
896 coro_setup_op.op_next = PL_op;
897 coro_setup_op.op_type = OP_CUSTOM;
898 coro_setup_op.op_ppaddr = pp_slf;
899 /* no flags etc. required, as an init function won't be called */
900
901 PL_op = (OP *)&coro_setup_op;
902
903 /* copy throw, in case it was set before coro_setup */
904 CORO_THROW = coro->except;
905}
906
845static void 907static void
846coro_destroy (pTHX_ struct coro *coro) 908coro_destruct (pTHX_ struct coro *coro)
847{ 909{
848 if (!IN_DESTRUCT) 910 if (!IN_DESTRUCT)
849 { 911 {
850 /* restore all saved variables and stuff */ 912 /* restore all saved variables and stuff */
851 LEAVE_SCOPE (0); 913 LEAVE_SCOPE (0);
… …
871 933
872 SvREFCNT_dec (PL_diehook); 934 SvREFCNT_dec (PL_diehook);
873 SvREFCNT_dec (PL_warnhook); 935 SvREFCNT_dec (PL_warnhook);
874 936
875 SvREFCNT_dec (coro->saved_deffh); 937 SvREFCNT_dec (coro->saved_deffh);
876 SvREFCNT_dec (coro->throw); 938 SvREFCNT_dec (coro->rouse_cb);
939 SvREFCNT_dec (coro->invoke_cb);
940 SvREFCNT_dec (coro->invoke_av);
877 941
878 coro_destroy_stacks (aTHX); 942 coro_destruct_stacks (aTHX);
879} 943}
880 944
881static void 945INLINE void
882free_coro_mortal (pTHX) 946free_coro_mortal (pTHX)
883{ 947{
884 if (expect_true (coro_mortal)) 948 if (expect_true (coro_mortal))
885 { 949 {
886 SvREFCNT_dec (coro_mortal); 950 SvREFCNT_dec (coro_mortal);
… …
891static int 955static int
892runops_trace (pTHX) 956runops_trace (pTHX)
893{ 957{
894 COP *oldcop = 0; 958 COP *oldcop = 0;
895 int oldcxix = -2; 959 int oldcxix = -2;
896 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 960 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
897 coro_cctx *cctx = coro->cctx; 961 coro_cctx *cctx = coro->cctx;
898 962
899 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 963 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
900 { 964 {
901 PERL_ASYNC_CHECK (); 965 PERL_ASYNC_CHECK ();
… …
968 SAVETMPS; 1032 SAVETMPS;
969 EXTEND (SP, 3); 1033 EXTEND (SP, 3);
970 PUSHMARK (SP); 1034 PUSHMARK (SP);
971 PUSHs (&PL_sv_yes); 1035 PUSHs (&PL_sv_yes);
972 PUSHs (fullname); 1036 PUSHs (fullname);
973 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1037 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
974 PUTBACK; 1038 PUTBACK;
975 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1039 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
976 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1040 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
977 SPAGAIN; 1041 SPAGAIN;
978 FREETMPS; 1042 FREETMPS;
… …
1010 1074
1011 TAINT_NOT; 1075 TAINT_NOT;
1012 return 0; 1076 return 0;
1013} 1077}
1014 1078
1015/* inject a fake call to Coro::State::_cctx_init into the execution */ 1079static struct coro_cctx *cctx_ssl_cctx;
1016/* _cctx_init should be careful, as it could be called at almost any time */ 1080static struct CoroSLF cctx_ssl_frame;
1017/* during execution of a perl program */ 1081
1082static void
1083slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1084{
1085 ta->prev = (struct coro *)cctx_ssl_cctx;
1086 ta->next = 0;
1087}
1088
1089static int
1090slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1091{
1092 *frame = cctx_ssl_frame;
1093
1094 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1095}
1096
1097/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1018static void NOINLINE 1098static void NOINLINE
1019cctx_prepare (pTHX_ coro_cctx *cctx) 1099cctx_prepare (pTHX_ coro_cctx *cctx)
1020{ 1100{
1021 dSP;
1022 LOGOP myop;
1023
1024 PL_top_env = &PL_start_env; 1101 PL_top_env = &PL_start_env;
1025 1102
1026 if (cctx->flags & CC_TRACE) 1103 if (cctx->flags & CC_TRACE)
1027 PL_runops = runops_trace; 1104 PL_runops = runops_trace;
1028 1105
1029 Zero (&myop, 1, LOGOP); 1106 /* we already must be executing an SLF op, there is no other valid way
1030 myop.op_next = PL_op; 1107 * that can lead to creation of a new cctx */
1031 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1108 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1109 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1032 1110
1033 PUSHMARK (SP); 1111 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1034 EXTEND (SP, 2); 1112 cctx_ssl_cctx = cctx;
1035 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1113 cctx_ssl_frame = slf_frame;
1036 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1114
1037 PUTBACK; 1115 slf_frame.prepare = slf_prepare_set_stacklevel;
1038 PL_op = (OP *)&myop; 1116 slf_frame.check = slf_check_set_stacklevel;
1039 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1117}
1040 SPAGAIN; 1118
1119/* the tail of transfer: execute stuff we can only do after a transfer */
1120INLINE void
1121transfer_tail (pTHX)
1122{
1123 free_coro_mortal (aTHX);
1041} 1124}
1042 1125
1043/* 1126/*
1044 * this is a _very_ stripped down perl interpreter ;) 1127 * this is a _very_ stripped down perl interpreter ;)
1045 */ 1128 */
1046static void 1129static void
1047cctx_run (void *arg) 1130cctx_run (void *arg)
1048{ 1131{
1132#ifdef USE_ITHREADS
1133# if CORO_PTHREAD
1134 PERL_SET_CONTEXT (coro_thx);
1135# endif
1136#endif
1137 {
1049 dTHX; 1138 dTHX;
1050 1139
1051 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1140 /* normally we would need to skip the entersub here */
1052 UNLOCK; 1141 /* not doing so will re-execute it, which is exactly what we want */
1053
1054 /* we now skip the entersub that lead to transfer() */
1055 PL_op = PL_op->op_next; 1142 /* PL_nop = PL_nop->op_next */
1056 1143
1057 /* inject a fake subroutine call to cctx_init */ 1144 /* inject a fake subroutine call to cctx_init */
1058 cctx_prepare (aTHX_ (coro_cctx *)arg); 1145 cctx_prepare (aTHX_ (coro_cctx *)arg);
1059 1146
1147 /* cctx_run is the alternative tail of transfer() */
1148 transfer_tail (aTHX);
1149
1060 /* somebody or something will hit me for both perl_run and PL_restartop */ 1150 /* somebody or something will hit me for both perl_run and PL_restartop */
1061 PL_restartop = PL_op; 1151 PL_restartop = PL_op;
1062 perl_run (PL_curinterp); 1152 perl_run (PL_curinterp);
1063
1064 /* 1153 /*
1154 * Unfortunately, there is no way to get at the return values of the
1155 * coro body here, as perl_run destroys these
1156 */
1157
1158 /*
1065 * If perl-run returns we assume exit() was being called or the coro 1159 * If perl-run returns we assume exit() was being called or the coro
1066 * fell off the end, which seems to be the only valid (non-bug) 1160 * fell off the end, which seems to be the only valid (non-bug)
1067 * reason for perl_run to return. We try to exit by jumping to the 1161 * reason for perl_run to return. We try to exit by jumping to the
1068 * bootstrap-time "top" top_env, as we cannot restore the "main" 1162 * bootstrap-time "top" top_env, as we cannot restore the "main"
1069 * coroutine as Coro has no such concept 1163 * coroutine as Coro has no such concept
1070 */ 1164 */
1071 PL_top_env = main_top_env; 1165 PL_top_env = main_top_env;
1072 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1166 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1167 }
1073} 1168}
1074 1169
1075static coro_cctx * 1170static coro_cctx *
1076cctx_new () 1171cctx_new ()
1077{ 1172{
1078 coro_cctx *cctx; 1173 coro_cctx *cctx;
1174
1175 ++cctx_count;
1176 New (0, cctx, 1, coro_cctx);
1177
1178 cctx->gen = cctx_gen;
1179 cctx->flags = 0;
1180 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1181
1182 return cctx;
1183}
1184
1185/* create a new cctx only suitable as source */
1186static coro_cctx *
1187cctx_new_empty ()
1188{
1189 coro_cctx *cctx = cctx_new ();
1190
1191 cctx->sptr = 0;
1192 coro_create (&cctx->cctx, 0, 0, 0, 0);
1193
1194 return cctx;
1195}
1196
1197/* create a new cctx suitable as destination/running a perl interpreter */
1198static coro_cctx *
1199cctx_new_run ()
1200{
1201 coro_cctx *cctx = cctx_new ();
1079 void *stack_start; 1202 void *stack_start;
1080 size_t stack_size; 1203 size_t stack_size;
1081 1204
1082 ++cctx_count;
1083
1084 Newz (0, cctx, 1, coro_cctx);
1085
1086#if HAVE_MMAP 1205#if HAVE_MMAP
1087 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1206 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1088 /* mmap supposedly does allocate-on-write for us */ 1207 /* mmap supposedly does allocate-on-write for us */
1089 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1208 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1090 1209
1091 if (cctx->sptr != (void *)-1) 1210 if (cctx->sptr != (void *)-1)
1092 { 1211 {
1093# if CORO_STACKGUARD 1212 #if CORO_STACKGUARD
1094 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1213 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1095# endif 1214 #endif
1096 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1215 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1097 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1216 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1098 cctx->flags |= CC_MAPPED; 1217 cctx->flags |= CC_MAPPED;
1099 } 1218 }
1100 else 1219 else
1101#endif 1220#endif
1102 { 1221 {
1103 cctx->ssize = coro_stacksize * (long)sizeof (long); 1222 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1104 New (0, cctx->sptr, coro_stacksize, long); 1223 New (0, cctx->sptr, cctx_stacksize, long);
1105 1224
1106 if (!cctx->sptr) 1225 if (!cctx->sptr)
1107 { 1226 {
1108 perror ("FATAL: unable to allocate stack for coroutine"); 1227 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1109 _exit (EXIT_FAILURE); 1228 _exit (EXIT_FAILURE);
1110 } 1229 }
1111 1230
1112 stack_start = cctx->sptr; 1231 stack_start = cctx->sptr;
1113 stack_size = cctx->ssize; 1232 stack_size = cctx->ssize;
1114 } 1233 }
1115 1234
1116 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1235 #if CORO_USE_VALGRIND
1236 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1237 #endif
1238
1117 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1239 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1118 1240
1119 return cctx; 1241 return cctx;
1120} 1242}
1121 1243
… …
1124{ 1246{
1125 if (!cctx) 1247 if (!cctx)
1126 return; 1248 return;
1127 1249
1128 --cctx_count; 1250 --cctx_count;
1251 coro_destroy (&cctx->cctx);
1129 1252
1253 /* coro_transfer creates new, empty cctx's */
1254 if (cctx->sptr)
1255 {
1130#if CORO_USE_VALGRIND 1256 #if CORO_USE_VALGRIND
1131 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1257 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1132#endif 1258 #endif
1133 1259
1134#if HAVE_MMAP 1260#if HAVE_MMAP
1135 if (cctx->flags & CC_MAPPED) 1261 if (cctx->flags & CC_MAPPED)
1136 munmap (cctx->sptr, cctx->ssize); 1262 munmap (cctx->sptr, cctx->ssize);
1137 else 1263 else
1138#endif 1264#endif
1139 Safefree (cctx->sptr); 1265 Safefree (cctx->sptr);
1266 }
1140 1267
1141 Safefree (cctx); 1268 Safefree (cctx);
1142} 1269}
1143 1270
1144/* wether this cctx should be destructed */ 1271/* wether this cctx should be destructed */
1145#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1272#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1146 1273
1147static coro_cctx * 1274static coro_cctx *
1148cctx_get (pTHX) 1275cctx_get (pTHX)
1149{ 1276{
1150 while (expect_true (cctx_first)) 1277 while (expect_true (cctx_first))
… …
1157 return cctx; 1284 return cctx;
1158 1285
1159 cctx_destroy (cctx); 1286 cctx_destroy (cctx);
1160 } 1287 }
1161 1288
1162 return cctx_new (); 1289 return cctx_new_run ();
1163} 1290}
1164 1291
1165static void 1292static void
1166cctx_put (coro_cctx *cctx) 1293cctx_put (coro_cctx *cctx)
1167{ 1294{
1295 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1296
1168 /* free another cctx if overlimit */ 1297 /* free another cctx if overlimit */
1169 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1298 if (expect_false (cctx_idle >= cctx_max_idle))
1170 { 1299 {
1171 coro_cctx *first = cctx_first; 1300 coro_cctx *first = cctx_first;
1172 cctx_first = first->next; 1301 cctx_first = first->next;
1173 --cctx_idle; 1302 --cctx_idle;
1174 1303
… …
1183/** coroutine switching *****************************************************/ 1312/** coroutine switching *****************************************************/
1184 1313
1185static void 1314static void
1186transfer_check (pTHX_ struct coro *prev, struct coro *next) 1315transfer_check (pTHX_ struct coro *prev, struct coro *next)
1187{ 1316{
1317 /* TODO: throwing up here is considered harmful */
1318
1188 if (expect_true (prev != next)) 1319 if (expect_true (prev != next))
1189 { 1320 {
1190 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1321 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1191 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1322 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1192 1323
1193 if (expect_false (next->flags & CF_RUNNING)) 1324 if (expect_false (next->flags & CF_RUNNING))
1194 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1325 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1195 1326
1196 if (expect_false (next->flags & CF_DESTROYED)) 1327 if (expect_false (next->flags & CF_DESTROYED))
1197 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1328 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1198 1329
1199#if !PERL_VERSION_ATLEAST (5,10,0) 1330#if !PERL_VERSION_ATLEAST (5,10,0)
1200 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1331 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1201 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1332 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1202#endif 1333#endif
1203 } 1334 }
1204} 1335}
1205 1336
1206/* always use the TRANSFER macro */ 1337/* always use the TRANSFER macro */
1207static void NOINLINE 1338static void NOINLINE /* noinline so we have a fixed stackframe */
1208transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1339transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1209{ 1340{
1210 dSTACKLEVEL; 1341 dSTACKLEVEL;
1211 static volatile int has_throw;
1212 1342
1213 /* sometimes transfer is only called to set idle_sp */ 1343 /* sometimes transfer is only called to set idle_sp */
1214 if (expect_false (!next)) 1344 if (expect_false (!next))
1215 { 1345 {
1216 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1346 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
… …
1220 { 1350 {
1221 coro_cctx *prev__cctx; 1351 coro_cctx *prev__cctx;
1222 1352
1223 if (expect_false (prev->flags & CF_NEW)) 1353 if (expect_false (prev->flags & CF_NEW))
1224 { 1354 {
1225 /* create a new empty context */ 1355 /* create a new empty/source context */
1226 Newz (0, prev->cctx, 1, coro_cctx); 1356 prev->cctx = cctx_new_empty ();
1227 prev->flags &= ~CF_NEW; 1357 prev->flags &= ~CF_NEW;
1228 prev->flags |= CF_RUNNING; 1358 prev->flags |= CF_RUNNING;
1229 } 1359 }
1230 1360
1231 prev->flags &= ~CF_RUNNING; 1361 prev->flags &= ~CF_RUNNING;
1232 next->flags |= CF_RUNNING; 1362 next->flags |= CF_RUNNING;
1233
1234 LOCK;
1235 1363
1236 /* first get rid of the old state */ 1364 /* first get rid of the old state */
1237 save_perl (aTHX_ prev); 1365 save_perl (aTHX_ prev);
1238 1366
1239 if (expect_false (next->flags & CF_NEW)) 1367 if (expect_false (next->flags & CF_NEW))
… …
1246 else 1374 else
1247 load_perl (aTHX_ next); 1375 load_perl (aTHX_ next);
1248 1376
1249 prev__cctx = prev->cctx; 1377 prev__cctx = prev->cctx;
1250 1378
1251 /* possibly "free" the cctx */ 1379 /* possibly untie and reuse the cctx */
1252 if (expect_true ( 1380 if (expect_true (
1253 prev__cctx->idle_sp == STACKLEVEL 1381 prev__cctx->idle_sp == STACKLEVEL
1254 && !(prev__cctx->flags & CC_TRACE) 1382 && !(prev__cctx->flags & CC_TRACE)
1255 && !force_cctx 1383 && !force_cctx
1256 )) 1384 ))
1257 { 1385 {
1258 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1386 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1259 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1387 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1260 1388
1261 prev->cctx = 0; 1389 prev->cctx = 0;
1262 1390
1263 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1391 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1264 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1392 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1271 1399
1272 ++next->usecount; 1400 ++next->usecount;
1273 1401
1274 if (expect_true (!next->cctx)) 1402 if (expect_true (!next->cctx))
1275 next->cctx = cctx_get (aTHX); 1403 next->cctx = cctx_get (aTHX);
1276
1277 has_throw = !!next->throw;
1278 1404
1279 if (expect_false (prev__cctx != next->cctx)) 1405 if (expect_false (prev__cctx != next->cctx))
1280 { 1406 {
1281 prev__cctx->top_env = PL_top_env; 1407 prev__cctx->top_env = PL_top_env;
1282 PL_top_env = next->cctx->top_env; 1408 PL_top_env = next->cctx->top_env;
1283 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1409 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1284 } 1410 }
1285 1411
1286 free_coro_mortal (aTHX); 1412 transfer_tail (aTHX);
1287 UNLOCK;
1288
1289 if (expect_false (has_throw))
1290 {
1291 struct coro *coro = SvSTATE (coro_current);
1292
1293 if (coro->throw)
1294 {
1295 SV *exception = coro->throw;
1296 coro->throw = 0;
1297 sv_setsv (ERRSV, exception);
1298 croak (0);
1299 }
1300 }
1301 } 1413 }
1302} 1414}
1303
1304struct transfer_args
1305{
1306 struct coro *prev, *next;
1307};
1308 1415
1309#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1416#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1310#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1417#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1311 1418
1312/** high level stuff ********************************************************/ 1419/** high level stuff ********************************************************/
… …
1314static int 1421static int
1315coro_state_destroy (pTHX_ struct coro *coro) 1422coro_state_destroy (pTHX_ struct coro *coro)
1316{ 1423{
1317 if (coro->flags & CF_DESTROYED) 1424 if (coro->flags & CF_DESTROYED)
1318 return 0; 1425 return 0;
1426
1427 if (coro->on_destroy)
1428 coro->on_destroy (aTHX_ coro);
1319 1429
1320 coro->flags |= CF_DESTROYED; 1430 coro->flags |= CF_DESTROYED;
1321 1431
1322 if (coro->flags & CF_READY) 1432 if (coro->flags & CF_READY)
1323 { 1433 {
1324 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1434 /* reduce nready, as destroying a ready coro effectively unreadies it */
1325 /* alternative: look through all ready queues and remove the coro */ 1435 /* alternative: look through all ready queues and remove the coro */
1326 LOCK;
1327 --coro_nready; 1436 --coro_nready;
1328 UNLOCK;
1329 } 1437 }
1330 else 1438 else
1331 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1439 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1332 1440
1333 if (coro->mainstack && coro->mainstack != main_mainstack) 1441 if (coro->mainstack && coro->mainstack != main_mainstack)
1334 { 1442 {
1335 struct coro temp; 1443 struct coro temp;
1336 1444
1337 if (coro->flags & CF_RUNNING) 1445 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1338 croak ("FATAL: tried to destroy currently running coroutine");
1339 1446
1340 save_perl (aTHX_ &temp); 1447 save_perl (aTHX_ &temp);
1341 load_perl (aTHX_ coro); 1448 load_perl (aTHX_ coro);
1342 1449
1343 coro_destroy (aTHX_ coro); 1450 coro_destruct (aTHX_ coro);
1344 1451
1345 load_perl (aTHX_ &temp); 1452 load_perl (aTHX_ &temp);
1346 1453
1347 coro->slot = 0; 1454 coro->slot = 0;
1348 } 1455 }
1349 1456
1350 cctx_destroy (coro->cctx); 1457 cctx_destroy (coro->cctx);
1458 SvREFCNT_dec (coro->startcv);
1351 SvREFCNT_dec (coro->args); 1459 SvREFCNT_dec (coro->args);
1460 SvREFCNT_dec (CORO_THROW);
1352 1461
1353 if (coro->next) coro->next->prev = coro->prev; 1462 if (coro->next) coro->next->prev = coro->prev;
1354 if (coro->prev) coro->prev->next = coro->next; 1463 if (coro->prev) coro->prev->next = coro->next;
1355 if (coro == coro_first) coro_first = coro->next; 1464 if (coro == coro_first) coro_first = coro->next;
1356 1465
… …
1394# define MGf_DUP 0 1503# define MGf_DUP 0
1395#endif 1504#endif
1396}; 1505};
1397 1506
1398static void 1507static void
1399prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1508prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1400{ 1509{
1401 ta->prev = SvSTATE (prev_sv); 1510 ta->prev = SvSTATE (prev_sv);
1402 ta->next = SvSTATE (next_sv); 1511 ta->next = SvSTATE (next_sv);
1403 TRANSFER_CHECK (*ta); 1512 TRANSFER_CHECK (*ta);
1404} 1513}
1405 1514
1406static void 1515static void
1407api_transfer (SV *prev_sv, SV *next_sv) 1516api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1408{ 1517{
1409 dTHX;
1410 struct transfer_args ta; 1518 struct coro_transfer_args ta;
1411 1519
1412 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1520 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1413 TRANSFER (ta, 1); 1521 TRANSFER (ta, 1);
1414} 1522}
1415 1523
1524/*****************************************************************************/
1525/* gensub: simple closure generation utility */
1526
1527#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1528
1529/* create a closure from XS, returns a code reference */
1530/* the arg can be accessed via GENSUB_ARG from the callback */
1531/* the callback must use dXSARGS/XSRETURN */
1532static SV *
1533gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1534{
1535 CV *cv = (CV *)newSV (0);
1536
1537 sv_upgrade ((SV *)cv, SVt_PVCV);
1538
1539 CvANON_on (cv);
1540 CvISXSUB_on (cv);
1541 CvXSUB (cv) = xsub;
1542 GENSUB_ARG = arg;
1543
1544 return newRV_noinc ((SV *)cv);
1545}
1546
1416/** Coro ********************************************************************/ 1547/** Coro ********************************************************************/
1417 1548
1418static void 1549INLINE void
1419coro_enq (pTHX_ SV *coro_sv) 1550coro_enq (pTHX_ struct coro *coro)
1420{ 1551{
1421 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1552 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1422} 1553}
1423 1554
1424static SV * 1555INLINE SV *
1425coro_deq (pTHX) 1556coro_deq (pTHX)
1426{ 1557{
1427 int prio; 1558 int prio;
1428 1559
1429 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1560 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1432 1563
1433 return 0; 1564 return 0;
1434} 1565}
1435 1566
1436static int 1567static int
1437api_ready (SV *coro_sv) 1568api_ready (pTHX_ SV *coro_sv)
1438{ 1569{
1439 dTHX;
1440 struct coro *coro; 1570 struct coro *coro;
1441 SV *sv_hook; 1571 SV *sv_hook;
1442 void (*xs_hook)(void); 1572 void (*xs_hook)(void);
1443 1573
1444 if (SvROK (coro_sv)) 1574 if (SvROK (coro_sv))
… …
1449 if (coro->flags & CF_READY) 1579 if (coro->flags & CF_READY)
1450 return 0; 1580 return 0;
1451 1581
1452 coro->flags |= CF_READY; 1582 coro->flags |= CF_READY;
1453 1583
1454 LOCK;
1455
1456 sv_hook = coro_nready ? 0 : coro_readyhook; 1584 sv_hook = coro_nready ? 0 : coro_readyhook;
1457 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1585 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1458 1586
1459 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1587 coro_enq (aTHX_ coro);
1460 ++coro_nready; 1588 ++coro_nready;
1461 1589
1462 UNLOCK;
1463
1464 if (sv_hook) 1590 if (sv_hook)
1465 { 1591 {
1466 dSP; 1592 dSP;
1467 1593
1468 ENTER; 1594 ENTER;
1469 SAVETMPS; 1595 SAVETMPS;
1470 1596
1471 PUSHMARK (SP); 1597 PUSHMARK (SP);
1472 PUTBACK; 1598 PUTBACK;
1473 call_sv (sv_hook, G_DISCARD); 1599 call_sv (sv_hook, G_VOID | G_DISCARD);
1474 SPAGAIN;
1475 1600
1476 FREETMPS; 1601 FREETMPS;
1477 LEAVE; 1602 LEAVE;
1478 } 1603 }
1479 1604
… …
1482 1607
1483 return 1; 1608 return 1;
1484} 1609}
1485 1610
1486static int 1611static int
1487api_is_ready (SV *coro_sv) 1612api_is_ready (pTHX_ SV *coro_sv)
1488{ 1613{
1489 dTHX;
1490 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1614 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1491} 1615}
1492 1616
1617/* expects to own a reference to next->hv */
1618INLINE void
1619prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1620{
1621 SV *prev_sv = SvRV (coro_current);
1622
1623 ta->prev = SvSTATE_hv (prev_sv);
1624 ta->next = next;
1625
1626 TRANSFER_CHECK (*ta);
1627
1628 SvRV_set (coro_current, (SV *)next->hv);
1629
1630 free_coro_mortal (aTHX);
1631 coro_mortal = prev_sv;
1632}
1633
1493static void 1634static void
1494prepare_schedule (pTHX_ struct transfer_args *ta) 1635prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1495{ 1636{
1496 SV *prev_sv, *next_sv;
1497
1498 for (;;) 1637 for (;;)
1499 { 1638 {
1500 LOCK;
1501 next_sv = coro_deq (aTHX); 1639 SV *next_sv = coro_deq (aTHX);
1502 1640
1503 /* nothing to schedule: call the idle handler */
1504 if (expect_false (!next_sv)) 1641 if (expect_true (next_sv))
1505 { 1642 {
1643 struct coro *next = SvSTATE_hv (next_sv);
1644
1645 /* cannot transfer to destroyed coros, skip and look for next */
1646 if (expect_false (next->flags & CF_DESTROYED))
1647 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
1648 else
1649 {
1650 next->flags &= ~CF_READY;
1651 --coro_nready;
1652
1653 return prepare_schedule_to (aTHX_ ta, next);
1654 }
1655 }
1656 else
1657 {
1658 /* nothing to schedule: call the idle handler */
1506 dSP; 1659 dSP;
1507 UNLOCK;
1508 1660
1509 ENTER; 1661 ENTER;
1510 SAVETMPS; 1662 SAVETMPS;
1511 1663
1512 PUSHMARK (SP); 1664 PUSHMARK (SP);
1513 PUTBACK; 1665 PUTBACK;
1514 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1666 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1515 SPAGAIN;
1516 1667
1517 FREETMPS; 1668 FREETMPS;
1518 LEAVE; 1669 LEAVE;
1519 continue;
1520 } 1670 }
1521
1522 ta->next = SvSTATE (next_sv);
1523
1524 /* cannot transfer to destroyed coros, skip and look for next */
1525 if (expect_false (ta->next->flags & CF_DESTROYED))
1526 {
1527 UNLOCK;
1528 SvREFCNT_dec (next_sv);
1529 /* coro_nready is already taken care of by destroy */
1530 continue;
1531 }
1532
1533 --coro_nready;
1534 UNLOCK;
1535 break;
1536 } 1671 }
1537
1538 /* free this only after the transfer */
1539 prev_sv = SvRV (coro_current);
1540 ta->prev = SvSTATE (prev_sv);
1541 TRANSFER_CHECK (*ta);
1542 assert (ta->next->flags & CF_READY);
1543 ta->next->flags &= ~CF_READY;
1544 SvRV_set (coro_current, next_sv);
1545
1546 LOCK;
1547 free_coro_mortal (aTHX);
1548 coro_mortal = prev_sv;
1549 UNLOCK;
1550} 1672}
1551 1673
1552static void 1674INLINE void
1553prepare_cede (pTHX_ struct transfer_args *ta) 1675prepare_cede (pTHX_ struct coro_transfer_args *ta)
1554{ 1676{
1555 api_ready (coro_current); 1677 api_ready (aTHX_ coro_current);
1556 prepare_schedule (aTHX_ ta); 1678 prepare_schedule (aTHX_ ta);
1557} 1679}
1558 1680
1681INLINE void
1682prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1683{
1684 SV *prev = SvRV (coro_current);
1685
1686 if (coro_nready)
1687 {
1688 prepare_schedule (aTHX_ ta);
1689 api_ready (aTHX_ prev);
1690 }
1691 else
1692 prepare_nop (aTHX_ ta);
1693}
1694
1695static void
1696api_schedule (pTHX)
1697{
1698 struct coro_transfer_args ta;
1699
1700 prepare_schedule (aTHX_ &ta);
1701 TRANSFER (ta, 1);
1702}
1703
1704static void
1705api_schedule_to (pTHX_ SV *coro_sv)
1706{
1707 struct coro_transfer_args ta;
1708 struct coro *next = SvSTATE (coro_sv);
1709
1710 SvREFCNT_inc_NN (coro_sv);
1711 prepare_schedule_to (aTHX_ &ta, next);
1712}
1713
1559static int 1714static int
1560prepare_cede_notself (pTHX_ struct transfer_args *ta) 1715api_cede (pTHX)
1561{ 1716{
1562 if (coro_nready) 1717 struct coro_transfer_args ta;
1563 { 1718
1564 SV *prev = SvRV (coro_current);
1565 prepare_schedule (aTHX_ ta); 1719 prepare_cede (aTHX_ &ta);
1566 api_ready (prev); 1720
1721 if (expect_true (ta.prev != ta.next))
1722 {
1723 TRANSFER (ta, 1);
1567 return 1; 1724 return 1;
1568 } 1725 }
1569 else 1726 else
1570 return 0; 1727 return 0;
1571} 1728}
1572 1729
1573static void
1574api_schedule (void)
1575{
1576 dTHX;
1577 struct transfer_args ta;
1578
1579 prepare_schedule (aTHX_ &ta);
1580 TRANSFER (ta, 1);
1581}
1582
1583static int 1730static int
1584api_cede (void) 1731api_cede_notself (pTHX)
1585{ 1732{
1586 dTHX; 1733 if (coro_nready)
1734 {
1587 struct transfer_args ta; 1735 struct coro_transfer_args ta;
1588 1736
1589 prepare_cede (aTHX_ &ta); 1737 prepare_cede_notself (aTHX_ &ta);
1590
1591 if (expect_true (ta.prev != ta.next))
1592 {
1593 TRANSFER (ta, 1); 1738 TRANSFER (ta, 1);
1594 return 1; 1739 return 1;
1595 } 1740 }
1596 else 1741 else
1597 return 0; 1742 return 0;
1598} 1743}
1599 1744
1600static int 1745static void
1601api_cede_notself (void)
1602{
1603 dTHX;
1604 struct transfer_args ta;
1605
1606 if (prepare_cede_notself (aTHX_ &ta))
1607 {
1608 TRANSFER (ta, 1);
1609 return 1;
1610 }
1611 else
1612 return 0;
1613}
1614
1615static void
1616api_trace (SV *coro_sv, int flags) 1746api_trace (pTHX_ SV *coro_sv, int flags)
1617{ 1747{
1618 dTHX;
1619 struct coro *coro = SvSTATE (coro_sv); 1748 struct coro *coro = SvSTATE (coro_sv);
1620 1749
1621 if (flags & CC_TRACE) 1750 if (flags & CC_TRACE)
1622 { 1751 {
1623 if (!coro->cctx) 1752 if (!coro->cctx)
1624 coro->cctx = cctx_new (); 1753 coro->cctx = cctx_new_run ();
1625 else if (!(coro->cctx->flags & CC_TRACE)) 1754 else if (!(coro->cctx->flags & CC_TRACE))
1626 croak ("cannot enable tracing on coroutine with custom stack"); 1755 croak ("cannot enable tracing on coroutine with custom stack,");
1627 1756
1628 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1757 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1629 } 1758 }
1630 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1759 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1631 { 1760 {
… …
1636 else 1765 else
1637 coro->slot->runops = RUNOPS_DEFAULT; 1766 coro->slot->runops = RUNOPS_DEFAULT;
1638 } 1767 }
1639} 1768}
1640 1769
1770/*****************************************************************************/
1771/* async pool handler */
1772
1641static int 1773static int
1642coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1774slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1643{ 1775{
1644 AV *padlist; 1776 HV *hv = (HV *)SvRV (coro_current);
1645 AV *av = (AV *)mg->mg_obj; 1777 struct coro *coro = (struct coro *)frame->data;
1646 1778
1647 abort (); 1779 if (!coro->invoke_cb)
1780 return 1; /* loop till we have invoke */
1781 else
1782 {
1783 hv_store (hv, "desc", sizeof ("desc") - 1,
1784 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1785
1786 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1787
1788 {
1789 dSP;
1790 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1791 PUTBACK;
1792 }
1793
1794 SvREFCNT_dec (GvAV (PL_defgv));
1795 GvAV (PL_defgv) = coro->invoke_av;
1796 coro->invoke_av = 0;
1797
1798 return 0;
1799 }
1800}
1801
1802static void
1803slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1804{
1805 HV *hv = (HV *)SvRV (coro_current);
1806 struct coro *coro = SvSTATE_hv ((SV *)hv);
1807
1808 if (expect_true (coro->saved_deffh))
1809 {
1810 /* subsequent iteration */
1811 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1812 coro->saved_deffh = 0;
1813
1814 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1815 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1816 {
1817 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1818 coro->invoke_av = newAV ();
1819
1820 frame->prepare = prepare_nop;
1821 }
1822 else
1823 {
1824 av_clear (GvAV (PL_defgv));
1825 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1826
1827 coro->prio = 0;
1828
1829 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1830 api_trace (aTHX_ coro_current, 0);
1831
1832 frame->prepare = prepare_schedule;
1833 av_push (av_async_pool, SvREFCNT_inc (hv));
1834 }
1835 }
1836 else
1837 {
1838 /* first iteration, simply fall through */
1839 frame->prepare = prepare_nop;
1840 }
1841
1842 frame->check = slf_check_pool_handler;
1843 frame->data = (void *)coro;
1844}
1845
1846/*****************************************************************************/
1847/* rouse callback */
1848
1849#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1850
1851static void
1852coro_rouse_callback (pTHX_ CV *cv)
1853{
1854 dXSARGS;
1855 SV *data = (SV *)GENSUB_ARG;
1856
1857 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1858 {
1859 /* first call, set args */
1860 AV *av = newAV ();
1861 SV *coro = SvRV (data);
1862
1863 SvRV_set (data, (SV *)av);
1864 api_ready (aTHX_ coro);
1865 SvREFCNT_dec (coro);
1866
1867 /* better take a full copy of the arguments */
1868 while (items--)
1869 av_store (av, items, newSVsv (ST (items)));
1870 }
1871
1872 XSRETURN_EMPTY;
1873}
1874
1875static int
1876slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1877{
1878 SV *data = (SV *)frame->data;
1879
1880 if (CORO_THROW)
1881 return 0;
1882
1883 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1884 return 1;
1885
1886 /* now push all results on the stack */
1887 {
1888 dSP;
1889 AV *av = (AV *)SvRV (data);
1890 int i;
1891
1892 EXTEND (SP, AvFILLp (av) + 1);
1893 for (i = 0; i <= AvFILLp (av); ++i)
1894 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1895
1896 /* we have stolen the elements, so ste length to zero and free */
1897 AvFILLp (av) = -1;
1898 av_undef (av);
1899
1900 PUTBACK;
1901 }
1648 1902
1649 return 0; 1903 return 0;
1650} 1904}
1651 1905
1652static MGVTBL coro_gensub_vtbl = { 1906static void
1653 0, 0, 0, 0, 1907slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1654 coro_gensub_free 1908{
1655}; 1909 SV *cb;
1910
1911 if (items)
1912 cb = arg [0];
1913 else
1914 {
1915 struct coro *coro = SvSTATE_current;
1916
1917 if (!coro->rouse_cb)
1918 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1919
1920 cb = sv_2mortal (coro->rouse_cb);
1921 coro->rouse_cb = 0;
1922 }
1923
1924 if (!SvROK (cb)
1925 || SvTYPE (SvRV (cb)) != SVt_PVCV
1926 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1927 croak ("Coro::rouse_wait called with illegal callback argument,");
1928
1929 {
1930 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1931 SV *data = (SV *)GENSUB_ARG;
1932
1933 frame->data = (void *)data;
1934 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1935 frame->check = slf_check_rouse_wait;
1936 }
1937}
1938
1939static SV *
1940coro_new_rouse_cb (pTHX)
1941{
1942 HV *hv = (HV *)SvRV (coro_current);
1943 struct coro *coro = SvSTATE_hv (hv);
1944 SV *data = newRV_inc ((SV *)hv);
1945 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1946
1947 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1948 SvREFCNT_dec (data); /* magicext increases the refcount */
1949
1950 SvREFCNT_dec (coro->rouse_cb);
1951 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1952
1953 return cb;
1954}
1955
1956/*****************************************************************************/
1957/* schedule-like-function opcode (SLF) */
1958
1959static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1960static const CV *slf_cv;
1961static SV **slf_argv;
1962static int slf_argc, slf_arga; /* count, allocated */
1963static I32 slf_ax; /* top of stack, for restore */
1964
1965/* this restores the stack in the case we patched the entersub, to */
1966/* recreate the stack frame as perl will on following calls */
1967/* since entersub cleared the stack */
1968static OP *
1969pp_restore (pTHX)
1970{
1971 int i;
1972 SV **SP = PL_stack_base + slf_ax;
1973
1974 PUSHMARK (SP);
1975
1976 EXTEND (SP, slf_argc + 1);
1977
1978 for (i = 0; i < slf_argc; ++i)
1979 PUSHs (sv_2mortal (slf_argv [i]));
1980
1981 PUSHs ((SV *)CvGV (slf_cv));
1982
1983 RETURNOP (slf_restore.op_first);
1984}
1985
1986static void
1987slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1988{
1989 SV **arg = (SV **)slf_frame.data;
1990
1991 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1992}
1993
1994static void
1995slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1996{
1997 if (items != 2)
1998 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1999
2000 frame->prepare = slf_prepare_transfer;
2001 frame->check = slf_check_nop;
2002 frame->data = (void *)arg; /* let's hope it will stay valid */
2003}
2004
2005static void
2006slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2007{
2008 frame->prepare = prepare_schedule;
2009 frame->check = slf_check_nop;
2010}
2011
2012static void
2013slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2014{
2015 struct coro *next = (struct coro *)slf_frame.data;
2016
2017 SvREFCNT_inc_NN (next->hv);
2018 prepare_schedule_to (aTHX_ ta, next);
2019}
2020
2021static void
2022slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2023{
2024 if (!items)
2025 croak ("Coro::schedule_to expects a coroutine argument, caught");
2026
2027 frame->data = (void *)SvSTATE (arg [0]);
2028 frame->prepare = slf_prepare_schedule_to;
2029 frame->check = slf_check_nop;
2030}
2031
2032static void
2033slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2034{
2035 api_ready (aTHX_ SvRV (coro_current));
2036
2037 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2038}
2039
2040static void
2041slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2042{
2043 frame->prepare = prepare_cede;
2044 frame->check = slf_check_nop;
2045}
2046
2047static void
2048slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{
2050 frame->prepare = prepare_cede_notself;
2051 frame->check = slf_check_nop;
2052}
2053
2054/*
2055 * these not obviously related functions are all rolled into one
2056 * function to increase chances that they all will call transfer with the same
2057 * stack offset
2058 * SLF stands for "schedule-like-function".
2059 */
2060static OP *
2061pp_slf (pTHX)
2062{
2063 I32 checkmark; /* mark SP to see how many elements check has pushed */
2064
2065 /* set up the slf frame, unless it has already been set-up */
2066 /* the latter happens when a new coro has been started */
2067 /* or when a new cctx was attached to an existing coroutine */
2068 if (expect_true (!slf_frame.prepare))
2069 {
2070 /* first iteration */
2071 dSP;
2072 SV **arg = PL_stack_base + TOPMARK + 1;
2073 int items = SP - arg; /* args without function object */
2074 SV *gv = *sp;
2075
2076 /* do a quick consistency check on the "function" object, and if it isn't */
2077 /* for us, divert to the real entersub */
2078 if (SvTYPE (gv) != SVt_PVGV
2079 || !GvCV (gv)
2080 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2081 return PL_ppaddr[OP_ENTERSUB](aTHX);
2082
2083 if (!(PL_op->op_flags & OPf_STACKED))
2084 {
2085 /* ampersand-form of call, use @_ instead of stack */
2086 AV *av = GvAV (PL_defgv);
2087 arg = AvARRAY (av);
2088 items = AvFILLp (av) + 1;
2089 }
2090
2091 /* now call the init function, which needs to set up slf_frame */
2092 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2093 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2094
2095 /* pop args */
2096 SP = PL_stack_base + POPMARK;
2097
2098 PUTBACK;
2099 }
2100
2101 /* now that we have a slf_frame, interpret it! */
2102 /* we use a callback system not to make the code needlessly */
2103 /* complicated, but so we can run multiple perl coros from one cctx */
2104
2105 do
2106 {
2107 struct coro_transfer_args ta;
2108
2109 slf_frame.prepare (aTHX_ &ta);
2110 TRANSFER (ta, 0);
2111
2112 checkmark = PL_stack_sp - PL_stack_base;
2113 }
2114 while (slf_frame.check (aTHX_ &slf_frame));
2115
2116 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2117
2118 /* exception handling */
2119 if (expect_false (CORO_THROW))
2120 {
2121 SV *exception = sv_2mortal (CORO_THROW);
2122
2123 CORO_THROW = 0;
2124 sv_setsv (ERRSV, exception);
2125 croak (0);
2126 }
2127
2128 /* return value handling - mostly like entersub */
2129 /* make sure we put something on the stack in scalar context */
2130 if (GIMME_V == G_SCALAR)
2131 {
2132 dSP;
2133 SV **bot = PL_stack_base + checkmark;
2134
2135 if (sp == bot) /* too few, push undef */
2136 bot [1] = &PL_sv_undef;
2137 else if (sp != bot + 1) /* too many, take last one */
2138 bot [1] = *sp;
2139
2140 SP = bot + 1;
2141
2142 PUTBACK;
2143 }
2144
2145 return NORMAL;
2146}
2147
2148static void
2149api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2150{
2151 int i;
2152 SV **arg = PL_stack_base + ax;
2153 int items = PL_stack_sp - arg + 1;
2154
2155 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2156
2157 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2158 && PL_op->op_ppaddr != pp_slf)
2159 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2160
2161 CvFLAGS (cv) |= CVf_SLF;
2162 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2163 slf_cv = cv;
2164
2165 /* we patch the op, and then re-run the whole call */
2166 /* we have to put the same argument on the stack for this to work */
2167 /* and this will be done by pp_restore */
2168 slf_restore.op_next = (OP *)&slf_restore;
2169 slf_restore.op_type = OP_CUSTOM;
2170 slf_restore.op_ppaddr = pp_restore;
2171 slf_restore.op_first = PL_op;
2172
2173 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2174
2175 if (PL_op->op_flags & OPf_STACKED)
2176 {
2177 if (items > slf_arga)
2178 {
2179 slf_arga = items;
2180 free (slf_argv);
2181 slf_argv = malloc (slf_arga * sizeof (SV *));
2182 }
2183
2184 slf_argc = items;
2185
2186 for (i = 0; i < items; ++i)
2187 slf_argv [i] = SvREFCNT_inc (arg [i]);
2188 }
2189 else
2190 slf_argc = 0;
2191
2192 PL_op->op_ppaddr = pp_slf;
2193 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2194
2195 PL_op = (OP *)&slf_restore;
2196}
1656 2197
1657/*****************************************************************************/ 2198/*****************************************************************************/
1658/* PerlIO::cede */ 2199/* PerlIO::cede */
1659 2200
1660typedef struct 2201typedef struct
… …
1688 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2229 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1689 double now = nvtime (); 2230 double now = nvtime ();
1690 2231
1691 if (now >= self->next) 2232 if (now >= self->next)
1692 { 2233 {
1693 api_cede (); 2234 api_cede (aTHX);
1694 self->next = now + self->every; 2235 self->next = now + self->every;
1695 } 2236 }
1696 2237
1697 return PerlIOBuf_flush (aTHX_ f); 2238 return PerlIOBuf_flush (aTHX_ f);
1698} 2239}
… …
1727 PerlIOBuf_get_ptr, 2268 PerlIOBuf_get_ptr,
1728 PerlIOBuf_get_cnt, 2269 PerlIOBuf_get_cnt,
1729 PerlIOBuf_set_ptrcnt, 2270 PerlIOBuf_set_ptrcnt,
1730}; 2271};
1731 2272
2273/*****************************************************************************/
2274/* Coro::Semaphore & Coro::Signal */
2275
2276static SV *
2277coro_waitarray_new (pTHX_ int count)
2278{
2279 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2280 AV *av = newAV ();
2281 SV **ary;
2282
2283 /* unfortunately, building manually saves memory */
2284 Newx (ary, 2, SV *);
2285 AvALLOC (av) = ary;
2286 /*AvARRAY (av) = ary;*/
2287 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2288 AvMAX (av) = 1;
2289 AvFILLp (av) = 0;
2290 ary [0] = newSViv (count);
2291
2292 return newRV_noinc ((SV *)av);
2293}
2294
2295/* semaphore */
2296
2297static void
2298coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2299{
2300 SV *count_sv = AvARRAY (av)[0];
2301 IV count = SvIVX (count_sv);
2302
2303 count += adjust;
2304 SvIVX (count_sv) = count;
2305
2306 /* now wake up as many waiters as are expected to lock */
2307 while (count > 0 && AvFILLp (av) > 0)
2308 {
2309 SV *cb;
2310
2311 /* swap first two elements so we can shift a waiter */
2312 AvARRAY (av)[0] = AvARRAY (av)[1];
2313 AvARRAY (av)[1] = count_sv;
2314 cb = av_shift (av);
2315
2316 if (SvOBJECT (cb))
2317 {
2318 api_ready (aTHX_ cb);
2319 --count;
2320 }
2321 else if (SvTYPE (cb) == SVt_PVCV)
2322 {
2323 dSP;
2324 PUSHMARK (SP);
2325 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2326 PUTBACK;
2327 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2328 }
2329
2330 SvREFCNT_dec (cb);
2331 }
2332}
2333
2334static void
2335coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2336{
2337 /* call $sem->adjust (0) to possibly wake up some other waiters */
2338 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2339}
2340
2341static int
2342slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2343{
2344 AV *av = (AV *)frame->data;
2345 SV *count_sv = AvARRAY (av)[0];
2346
2347 /* if we are about to throw, don't actually acquire the lock, just throw */
2348 if (CORO_THROW)
2349 return 0;
2350 else if (SvIVX (count_sv) > 0)
2351 {
2352 SvSTATE_current->on_destroy = 0;
2353
2354 if (acquire)
2355 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2356 else
2357 coro_semaphore_adjust (aTHX_ av, 0);
2358
2359 return 0;
2360 }
2361 else
2362 {
2363 int i;
2364 /* if we were woken up but can't down, we look through the whole */
2365 /* waiters list and only add us if we aren't in there already */
2366 /* this avoids some degenerate memory usage cases */
2367
2368 for (i = 1; i <= AvFILLp (av); ++i)
2369 if (AvARRAY (av)[i] == SvRV (coro_current))
2370 return 1;
2371
2372 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2373 return 1;
2374 }
2375}
2376
2377static int
2378slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2379{
2380 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2381}
2382
2383static int
2384slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2385{
2386 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2387}
2388
2389static void
2390slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2391{
2392 AV *av = (AV *)SvRV (arg [0]);
2393
2394 if (SvIVX (AvARRAY (av)[0]) > 0)
2395 {
2396 frame->data = (void *)av;
2397 frame->prepare = prepare_nop;
2398 }
2399 else
2400 {
2401 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2402
2403 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2404 frame->prepare = prepare_schedule;
2405
2406 /* to avoid race conditions when a woken-up coro gets terminated */
2407 /* we arrange for a temporary on_destroy that calls adjust (0) */
2408 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2409 }
2410}
2411
2412static void
2413slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2414{
2415 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2416 frame->check = slf_check_semaphore_down;
2417}
2418
2419static void
2420slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2421{
2422 if (items >= 2)
2423 {
2424 /* callback form */
2425 AV *av = (AV *)SvRV (arg [0]);
2426 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2427
2428 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2429
2430 if (SvIVX (AvARRAY (av)[0]) > 0)
2431 coro_semaphore_adjust (aTHX_ av, 0);
2432
2433 frame->prepare = prepare_nop;
2434 frame->check = slf_check_nop;
2435 }
2436 else
2437 {
2438 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2439 frame->check = slf_check_semaphore_wait;
2440 }
2441}
2442
2443/* signal */
2444
2445static void
2446coro_signal_wake (pTHX_ AV *av, int count)
2447{
2448 SvIVX (AvARRAY (av)[0]) = 0;
2449
2450 /* now signal count waiters */
2451 while (count > 0 && AvFILLp (av) > 0)
2452 {
2453 SV *cb;
2454
2455 /* swap first two elements so we can shift a waiter */
2456 cb = AvARRAY (av)[0];
2457 AvARRAY (av)[0] = AvARRAY (av)[1];
2458 AvARRAY (av)[1] = cb;
2459
2460 cb = av_shift (av);
2461
2462 api_ready (aTHX_ cb);
2463 sv_setiv (cb, 0); /* signal waiter */
2464 SvREFCNT_dec (cb);
2465
2466 --count;
2467 }
2468}
2469
2470static int
2471slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2472{
2473 /* if we are about to throw, also stop waiting */
2474 return SvROK ((SV *)frame->data) && !CORO_THROW;
2475}
2476
2477static void
2478slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2479{
2480 AV *av = (AV *)SvRV (arg [0]);
2481
2482 if (SvIVX (AvARRAY (av)[0]))
2483 {
2484 SvIVX (AvARRAY (av)[0]) = 0;
2485 frame->prepare = prepare_nop;
2486 frame->check = slf_check_nop;
2487 }
2488 else
2489 {
2490 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2491
2492 av_push (av, waiter);
2493
2494 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2495 frame->prepare = prepare_schedule;
2496 frame->check = slf_check_signal_wait;
2497 }
2498}
2499
2500/*****************************************************************************/
2501/* Coro::AIO */
2502
2503#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2504
2505/* helper storage struct */
2506struct io_state
2507{
2508 int errorno;
2509 I32 laststype; /* U16 in 5.10.0 */
2510 int laststatval;
2511 Stat_t statcache;
2512};
2513
2514static void
2515coro_aio_callback (pTHX_ CV *cv)
2516{
2517 dXSARGS;
2518 AV *state = (AV *)GENSUB_ARG;
2519 SV *coro = av_pop (state);
2520 SV *data_sv = newSV (sizeof (struct io_state));
2521
2522 av_extend (state, items - 1);
2523
2524 sv_upgrade (data_sv, SVt_PV);
2525 SvCUR_set (data_sv, sizeof (struct io_state));
2526 SvPOK_only (data_sv);
2527
2528 {
2529 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2530
2531 data->errorno = errno;
2532 data->laststype = PL_laststype;
2533 data->laststatval = PL_laststatval;
2534 data->statcache = PL_statcache;
2535 }
2536
2537 /* now build the result vector out of all the parameters and the data_sv */
2538 {
2539 int i;
2540
2541 for (i = 0; i < items; ++i)
2542 av_push (state, SvREFCNT_inc_NN (ST (i)));
2543 }
2544
2545 av_push (state, data_sv);
2546
2547 api_ready (aTHX_ coro);
2548 SvREFCNT_dec (coro);
2549 SvREFCNT_dec ((AV *)state);
2550}
2551
2552static int
2553slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2554{
2555 AV *state = (AV *)frame->data;
2556
2557 /* if we are about to throw, return early */
2558 /* this does not cancel the aio request, but at least */
2559 /* it quickly returns */
2560 if (CORO_THROW)
2561 return 0;
2562
2563 /* one element that is an RV? repeat! */
2564 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2565 return 1;
2566
2567 /* restore status */
2568 {
2569 SV *data_sv = av_pop (state);
2570 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2571
2572 errno = data->errorno;
2573 PL_laststype = data->laststype;
2574 PL_laststatval = data->laststatval;
2575 PL_statcache = data->statcache;
2576
2577 SvREFCNT_dec (data_sv);
2578 }
2579
2580 /* push result values */
2581 {
2582 dSP;
2583 int i;
2584
2585 EXTEND (SP, AvFILLp (state) + 1);
2586 for (i = 0; i <= AvFILLp (state); ++i)
2587 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2588
2589 PUTBACK;
2590 }
2591
2592 return 0;
2593}
2594
2595static void
2596slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2597{
2598 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2599 SV *coro_hv = SvRV (coro_current);
2600 struct coro *coro = SvSTATE_hv (coro_hv);
2601
2602 /* put our coroutine id on the state arg */
2603 av_push (state, SvREFCNT_inc_NN (coro_hv));
2604
2605 /* first see whether we have a non-zero priority and set it as AIO prio */
2606 if (coro->prio)
2607 {
2608 dSP;
2609
2610 static SV *prio_cv;
2611 static SV *prio_sv;
2612
2613 if (expect_false (!prio_cv))
2614 {
2615 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2616 prio_sv = newSViv (0);
2617 }
2618
2619 PUSHMARK (SP);
2620 sv_setiv (prio_sv, coro->prio);
2621 XPUSHs (prio_sv);
2622
2623 PUTBACK;
2624 call_sv (prio_cv, G_VOID | G_DISCARD);
2625 }
2626
2627 /* now call the original request */
2628 {
2629 dSP;
2630 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2631 int i;
2632
2633 PUSHMARK (SP);
2634
2635 /* first push all args to the stack */
2636 EXTEND (SP, items + 1);
2637
2638 for (i = 0; i < items; ++i)
2639 PUSHs (arg [i]);
2640
2641 /* now push the callback closure */
2642 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2643
2644 /* now call the AIO function - we assume our request is uncancelable */
2645 PUTBACK;
2646 call_sv ((SV *)req, G_VOID | G_DISCARD);
2647 }
2648
2649 /* now that the requets is going, we loop toll we have a result */
2650 frame->data = (void *)state;
2651 frame->prepare = prepare_schedule;
2652 frame->check = slf_check_aio_req;
2653}
2654
2655static void
2656coro_aio_req_xs (pTHX_ CV *cv)
2657{
2658 dXSARGS;
2659
2660 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2661
2662 XSRETURN_EMPTY;
2663}
2664
2665/*****************************************************************************/
1732 2666
1733MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2667MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1734 2668
1735PROTOTYPES: DISABLE 2669PROTOTYPES: DISABLE
1736 2670
1737BOOT: 2671BOOT:
1738{ 2672{
1739#ifdef USE_ITHREADS 2673#ifdef USE_ITHREADS
1740 MUTEX_INIT (&coro_mutex); 2674# if CORO_PTHREAD
2675 coro_thx = PERL_GET_CONTEXT;
2676# endif
1741#endif 2677#endif
1742 BOOT_PAGESIZE; 2678 BOOT_PAGESIZE;
1743 2679
1744 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2680 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1745 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2681 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1763 main_top_env = PL_top_env; 2699 main_top_env = PL_top_env;
1764 2700
1765 while (main_top_env->je_prev) 2701 while (main_top_env->je_prev)
1766 main_top_env = main_top_env->je_prev; 2702 main_top_env = main_top_env->je_prev;
1767 2703
2704 {
2705 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2706
2707 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2708 hv_store_ent (PL_custom_op_names, slf,
2709 newSVpv ("coro_slf", 0), 0);
2710
2711 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2712 hv_store_ent (PL_custom_op_descs, slf,
2713 newSVpv ("coro schedule like function", 0), 0);
2714 }
2715
1768 coroapi.ver = CORO_API_VERSION; 2716 coroapi.ver = CORO_API_VERSION;
1769 coroapi.rev = CORO_API_REVISION; 2717 coroapi.rev = CORO_API_REVISION;
2718
1770 coroapi.transfer = api_transfer; 2719 coroapi.transfer = api_transfer;
2720
2721 coroapi.sv_state = SvSTATE_;
2722 coroapi.execute_slf = api_execute_slf;
2723 coroapi.prepare_nop = prepare_nop;
2724 coroapi.prepare_schedule = prepare_schedule;
2725 coroapi.prepare_cede = prepare_cede;
2726 coroapi.prepare_cede_notself = prepare_cede_notself;
1771 2727
1772 { 2728 {
1773 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2729 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1774 2730
1775 if (!svp) croak ("Time::HiRes is required"); 2731 if (!svp) croak ("Time::HiRes is required");
… …
1781 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2737 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1782} 2738}
1783 2739
1784SV * 2740SV *
1785new (char *klass, ...) 2741new (char *klass, ...)
2742 ALIAS:
2743 Coro::new = 1
1786 CODE: 2744 CODE:
1787{ 2745{
1788 struct coro *coro; 2746 struct coro *coro;
1789 MAGIC *mg; 2747 MAGIC *mg;
1790 HV *hv; 2748 HV *hv;
2749 CV *cb;
1791 int i; 2750 int i;
2751
2752 if (items > 1)
2753 {
2754 cb = coro_sv_2cv (aTHX_ ST (1));
2755
2756 if (!ix)
2757 {
2758 if (CvISXSUB (cb))
2759 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2760
2761 if (!CvROOT (cb))
2762 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2763 }
2764 }
1792 2765
1793 Newz (0, coro, 1, struct coro); 2766 Newz (0, coro, 1, struct coro);
1794 coro->args = newAV (); 2767 coro->args = newAV ();
1795 coro->flags = CF_NEW; 2768 coro->flags = CF_NEW;
1796 2769
… …
1801 coro->hv = hv = newHV (); 2774 coro->hv = hv = newHV ();
1802 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 2775 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1803 mg->mg_flags |= MGf_DUP; 2776 mg->mg_flags |= MGf_DUP;
1804 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2777 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1805 2778
2779 if (items > 1)
2780 {
1806 av_extend (coro->args, items - 1); 2781 av_extend (coro->args, items - 1 + ix - 1);
2782
2783 if (ix)
2784 {
2785 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2786 cb = cv_coro_run;
2787 }
2788
2789 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2790
1807 for (i = 1; i < items; i++) 2791 for (i = 2; i < items; i++)
1808 av_push (coro->args, newSVsv (ST (i))); 2792 av_push (coro->args, newSVsv (ST (i)));
2793 }
1809} 2794}
1810 OUTPUT: 2795 OUTPUT:
1811 RETVAL 2796 RETVAL
1812 2797
1813# these not obviously related functions are all rolled into the same xs
1814# function to increase chances that they all will call transfer with the same
1815# stack offset
1816void 2798void
1817_set_stacklevel (...) 2799transfer (...)
1818 ALIAS: 2800 PROTOTYPE: $$
1819 Coro::State::transfer = 1 2801 CODE:
1820 Coro::schedule = 2 2802 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1821 Coro::cede = 3
1822 Coro::cede_notself = 4
1823 CODE:
1824{
1825 struct transfer_args ta;
1826
1827 PUTBACK;
1828 switch (ix)
1829 {
1830 case 0:
1831 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1832 ta.next = 0;
1833 break;
1834
1835 case 1:
1836 if (items != 2)
1837 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1838
1839 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1840 break;
1841
1842 case 2:
1843 prepare_schedule (aTHX_ &ta);
1844 break;
1845
1846 case 3:
1847 prepare_cede (aTHX_ &ta);
1848 break;
1849
1850 case 4:
1851 if (!prepare_cede_notself (aTHX_ &ta))
1852 XSRETURN_EMPTY;
1853
1854 break;
1855 }
1856 SPAGAIN;
1857
1858 BARRIER;
1859 PUTBACK;
1860 TRANSFER (ta, 0);
1861 SPAGAIN; /* might be the sp of a different coroutine now */
1862 /* be extra careful not to ever do anything after TRANSFER */
1863}
1864 2803
1865bool 2804bool
1866_destroy (SV *coro_sv) 2805_destroy (SV *coro_sv)
1867 CODE: 2806 CODE:
1868 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2807 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1875 CODE: 2814 CODE:
1876 _exit (code); 2815 _exit (code);
1877 2816
1878int 2817int
1879cctx_stacksize (int new_stacksize = 0) 2818cctx_stacksize (int new_stacksize = 0)
2819 PROTOTYPE: ;$
1880 CODE: 2820 CODE:
1881 RETVAL = coro_stacksize; 2821 RETVAL = cctx_stacksize;
1882 if (new_stacksize) 2822 if (new_stacksize)
2823 {
1883 coro_stacksize = new_stacksize; 2824 cctx_stacksize = new_stacksize;
2825 ++cctx_gen;
2826 }
1884 OUTPUT: 2827 OUTPUT:
1885 RETVAL 2828 RETVAL
1886 2829
1887int 2830int
2831cctx_max_idle (int max_idle = 0)
2832 PROTOTYPE: ;$
2833 CODE:
2834 RETVAL = cctx_max_idle;
2835 if (max_idle > 1)
2836 cctx_max_idle = max_idle;
2837 OUTPUT:
2838 RETVAL
2839
2840int
1888cctx_count () 2841cctx_count ()
2842 PROTOTYPE:
1889 CODE: 2843 CODE:
1890 RETVAL = cctx_count; 2844 RETVAL = cctx_count;
1891 OUTPUT: 2845 OUTPUT:
1892 RETVAL 2846 RETVAL
1893 2847
1894int 2848int
1895cctx_idle () 2849cctx_idle ()
2850 PROTOTYPE:
1896 CODE: 2851 CODE:
1897 RETVAL = cctx_idle; 2852 RETVAL = cctx_idle;
1898 OUTPUT: 2853 OUTPUT:
1899 RETVAL 2854 RETVAL
1900 2855
1901void 2856void
1902list () 2857list ()
2858 PROTOTYPE:
1903 PPCODE: 2859 PPCODE:
1904{ 2860{
1905 struct coro *coro; 2861 struct coro *coro;
1906 for (coro = coro_first; coro; coro = coro->next) 2862 for (coro = coro_first; coro; coro = coro->next)
1907 if (coro->hv) 2863 if (coro->hv)
… …
1966 RETVAL = boolSV (coro->flags & ix); 2922 RETVAL = boolSV (coro->flags & ix);
1967 OUTPUT: 2923 OUTPUT:
1968 RETVAL 2924 RETVAL
1969 2925
1970void 2926void
2927throw (Coro::State self, SV *throw = &PL_sv_undef)
2928 PROTOTYPE: $;$
2929 CODE:
2930{
2931 struct coro *current = SvSTATE_current;
2932 SV **throwp = self == current ? &CORO_THROW : &self->except;
2933 SvREFCNT_dec (*throwp);
2934 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2935}
2936
2937void
1971api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2938api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2939 PROTOTYPE: $;$
2940 C_ARGS: aTHX_ coro, flags
1972 2941
1973SV * 2942SV *
1974has_cctx (Coro::State coro) 2943has_cctx (Coro::State coro)
1975 PROTOTYPE: $ 2944 PROTOTYPE: $
1976 CODE: 2945 CODE:
… …
1984 CODE: 2953 CODE:
1985 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2954 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1986 OUTPUT: 2955 OUTPUT:
1987 RETVAL 2956 RETVAL
1988 2957
1989IV 2958UV
1990rss (Coro::State coro) 2959rss (Coro::State coro)
1991 PROTOTYPE: $ 2960 PROTOTYPE: $
1992 ALIAS: 2961 ALIAS:
1993 usecount = 1 2962 usecount = 1
1994 CODE: 2963 CODE:
… …
2000 OUTPUT: 2969 OUTPUT:
2001 RETVAL 2970 RETVAL
2002 2971
2003void 2972void
2004force_cctx () 2973force_cctx ()
2974 PROTOTYPE:
2005 CODE: 2975 CODE:
2006 struct coro *coro = SvSTATE (coro_current);
2007 coro->cctx->idle_sp = 0; 2976 SvSTATE_current->cctx->idle_sp = 0;
2008
2009void
2010throw (Coro::State self, SV *throw = &PL_sv_undef)
2011 PROTOTYPE: $;$
2012 CODE:
2013 SvREFCNT_dec (self->throw);
2014 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2015 2977
2016void 2978void
2017swap_defsv (Coro::State self) 2979swap_defsv (Coro::State self)
2018 PROTOTYPE: $ 2980 PROTOTYPE: $
2019 ALIAS: 2981 ALIAS:
2020 swap_defav = 1 2982 swap_defav = 1
2021 CODE: 2983 CODE:
2022 if (!self->slot) 2984 if (!self->slot)
2023 croak ("cannot swap state with coroutine that has no saved state"); 2985 croak ("cannot swap state with coroutine that has no saved state,");
2024 else 2986 else
2025 { 2987 {
2026 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2988 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2027 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2989 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2028 2990
2029 SV *tmp = *src; *src = *dst; *dst = tmp; 2991 SV *tmp = *src; *src = *dst; *dst = tmp;
2030 } 2992 }
2031 2993
2994
2032MODULE = Coro::State PACKAGE = Coro 2995MODULE = Coro::State PACKAGE = Coro
2033 2996
2034BOOT: 2997BOOT:
2035{ 2998{
2036 int i; 2999 int i;
2037 3000
2038 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3001 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2039 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3002 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2040 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3003 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2041 3004 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3005 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2042 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3006 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2043 SvREADONLY_on (coro_current); 3007
3008 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3009 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3010 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3011 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2044 3012
2045 coro_stash = gv_stashpv ("Coro", TRUE); 3013 coro_stash = gv_stashpv ("Coro", TRUE);
2046 3014
2047 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3015 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
2048 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3016 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
… …
2053 3021
2054 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3022 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2055 coro_ready[i] = newAV (); 3023 coro_ready[i] = newAV ();
2056 3024
2057 { 3025 {
2058 SV *sv = perl_get_sv ("Coro::API", TRUE); 3026 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2059 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2060 3027
2061 coroapi.schedule = api_schedule; 3028 coroapi.schedule = api_schedule;
3029 coroapi.schedule_to = api_schedule_to;
2062 coroapi.cede = api_cede; 3030 coroapi.cede = api_cede;
2063 coroapi.cede_notself = api_cede_notself; 3031 coroapi.cede_notself = api_cede_notself;
2064 coroapi.ready = api_ready; 3032 coroapi.ready = api_ready;
2065 coroapi.is_ready = api_is_ready; 3033 coroapi.is_ready = api_is_ready;
2066 coroapi.nready = &coro_nready; 3034 coroapi.nready = coro_nready;
2067 coroapi.current = coro_current; 3035 coroapi.current = coro_current;
2068 3036
2069 GCoroAPI = &coroapi; 3037 /*GCoroAPI = &coroapi;*/
2070 sv_setiv (sv, (IV)&coroapi); 3038 sv_setiv (sv, (IV)&coroapi);
2071 SvREADONLY_on (sv); 3039 SvREADONLY_on (sv);
2072 } 3040 }
2073} 3041}
3042
3043void
3044schedule (...)
3045 CODE:
3046 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3047
3048void
3049schedule_to (...)
3050 CODE:
3051 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3052
3053void
3054cede_to (...)
3055 CODE:
3056 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3057
3058void
3059cede (...)
3060 CODE:
3061 CORO_EXECUTE_SLF_XS (slf_init_cede);
3062
3063void
3064cede_notself (...)
3065 CODE:
3066 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2074 3067
2075void 3068void
2076_set_current (SV *current) 3069_set_current (SV *current)
2077 PROTOTYPE: $ 3070 PROTOTYPE: $
2078 CODE: 3071 CODE:
… …
2081 3074
2082void 3075void
2083_set_readyhook (SV *hook) 3076_set_readyhook (SV *hook)
2084 PROTOTYPE: $ 3077 PROTOTYPE: $
2085 CODE: 3078 CODE:
2086 LOCK;
2087 SvREFCNT_dec (coro_readyhook); 3079 SvREFCNT_dec (coro_readyhook);
2088 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3080 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2089 UNLOCK;
2090 3081
2091int 3082int
2092prio (Coro::State coro, int newprio = 0) 3083prio (Coro::State coro, int newprio = 0)
3084 PROTOTYPE: $;$
2093 ALIAS: 3085 ALIAS:
2094 nice = 1 3086 nice = 1
2095 CODE: 3087 CODE:
2096{ 3088{
2097 RETVAL = coro->prio; 3089 RETVAL = coro->prio;
… …
2112 3104
2113SV * 3105SV *
2114ready (SV *self) 3106ready (SV *self)
2115 PROTOTYPE: $ 3107 PROTOTYPE: $
2116 CODE: 3108 CODE:
2117 RETVAL = boolSV (api_ready (self)); 3109 RETVAL = boolSV (api_ready (aTHX_ self));
2118 OUTPUT: 3110 OUTPUT:
2119 RETVAL 3111 RETVAL
2120 3112
2121int 3113int
2122nready (...) 3114nready (...)
… …
2124 CODE: 3116 CODE:
2125 RETVAL = coro_nready; 3117 RETVAL = coro_nready;
2126 OUTPUT: 3118 OUTPUT:
2127 RETVAL 3119 RETVAL
2128 3120
2129# for async_pool speedup
2130void 3121void
2131_pool_1 (SV *cb) 3122_pool_handler (...)
2132 CODE: 3123 CODE:
2133{ 3124 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
2134 struct coro *coro = SvSTATE (coro_current);
2135 HV *hv = (HV *)SvRV (coro_current);
2136 AV *defav = GvAV (PL_defgv);
2137 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2138 AV *invoke_av;
2139 int i, len;
2140 3125
2141 if (!invoke) 3126void
3127async_pool (SV *cv, ...)
3128 PROTOTYPE: &@
3129 PPCODE:
3130{
3131 HV *hv = (HV *)av_pop (av_async_pool);
3132 AV *av = newAV ();
3133 SV *cb = ST (0);
3134 int i;
3135
3136 av_extend (av, items - 2);
3137 for (i = 1; i < items; ++i)
3138 av_push (av, SvREFCNT_inc_NN (ST (i)));
3139
3140 if ((SV *)hv == &PL_sv_undef)
2142 { 3141 {
2143 SV *old = PL_diehook; 3142 PUSHMARK (SP);
2144 PL_diehook = 0; 3143 EXTEND (SP, 2);
2145 SvREFCNT_dec (old); 3144 PUSHs (sv_Coro);
2146 croak ("\3async_pool terminate\2\n"); 3145 PUSHs ((SV *)cv_pool_handler);
3146 PUTBACK;
3147 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3148 SPAGAIN;
3149
3150 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2147 } 3151 }
2148 3152
2149 SvREFCNT_dec (coro->saved_deffh);
2150 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2151
2152 hv_store (hv, "desc", sizeof ("desc") - 1,
2153 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2154
2155 invoke_av = (AV *)SvRV (invoke);
2156 len = av_len (invoke_av);
2157
2158 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2159
2160 if (len > 0)
2161 { 3153 {
2162 av_fill (defav, len - 1); 3154 struct coro *coro = SvSTATE_hv (hv);
2163 for (i = 0; i < len; ++i) 3155
2164 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3156 assert (!coro->invoke_cb);
3157 assert (!coro->invoke_av);
3158 coro->invoke_cb = SvREFCNT_inc (cb);
3159 coro->invoke_av = av;
2165 } 3160 }
2166 3161
3162 api_ready (aTHX_ (SV *)hv);
3163
3164 if (GIMME_V != G_VOID)
3165 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3166 else
2167 SvREFCNT_dec (invoke); 3167 SvREFCNT_dec (hv);
2168} 3168}
2169 3169
2170void 3170SV *
2171_pool_2 (SV *cb) 3171rouse_cb ()
3172 PROTOTYPE:
2172 CODE: 3173 CODE:
2173{ 3174 RETVAL = coro_new_rouse_cb (aTHX);
2174 struct coro *coro = SvSTATE (coro_current);
2175
2176 sv_setsv (cb, &PL_sv_undef);
2177
2178 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2179 coro->saved_deffh = 0;
2180
2181 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2182 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2183 {
2184 SV *old = PL_diehook;
2185 PL_diehook = 0;
2186 SvREFCNT_dec (old);
2187 croak ("\3async_pool terminate\2\n");
2188 }
2189
2190 av_clear (GvAV (PL_defgv));
2191 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2192 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2193
2194 coro->prio = 0;
2195
2196 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2197 api_trace (coro_current, 0);
2198
2199 av_push (av_async_pool, newSVsv (coro_current));
2200}
2201
2202#if 0
2203
2204void
2205_generator_call (...)
2206 PROTOTYPE: @
2207 PPCODE:
2208 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2209 xxxx
2210 abort ();
2211
2212SV *
2213gensub (SV *sub, ...)
2214 PROTOTYPE: &;@
2215 CODE:
2216{
2217 struct coro *coro;
2218 MAGIC *mg;
2219 CV *xcv;
2220 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2221 int i;
2222
2223 CvGV (ncv) = CvGV (cv);
2224 CvFILE (ncv) = CvFILE (cv);
2225
2226 Newz (0, coro, 1, struct coro);
2227 coro->args = newAV ();
2228 coro->flags = CF_NEW;
2229
2230 av_extend (coro->args, items - 1);
2231 for (i = 1; i < items; i++)
2232 av_push (coro->args, newSVsv (ST (i)));
2233
2234 CvISXSUB_on (ncv);
2235 CvXSUBANY (ncv).any_ptr = (void *)coro;
2236
2237 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2238
2239 CvXSUB (ncv) = CvXSUB (xcv);
2240 CvANON_on (ncv);
2241
2242 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2243 RETVAL = newRV_noinc ((SV *)ncv);
2244}
2245 OUTPUT: 3175 OUTPUT:
2246 RETVAL 3176 RETVAL
2247 3177
2248#endif
2249
2250
2251MODULE = Coro::State PACKAGE = Coro::AIO
2252
2253void 3178void
2254_get_state (SV *self) 3179rouse_wait (...)
3180 PROTOTYPE: ;$
2255 PPCODE: 3181 PPCODE:
2256{ 3182 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2257 AV *defav = GvAV (PL_defgv);
2258 AV *av = newAV ();
2259 int i;
2260 SV *data_sv = newSV (sizeof (struct io_state));
2261 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2262 SvCUR_set (data_sv, sizeof (struct io_state));
2263 SvPOK_only (data_sv);
2264 3183
2265 data->errorno = errno;
2266 data->laststype = PL_laststype;
2267 data->laststatval = PL_laststatval;
2268 data->statcache = PL_statcache;
2269 3184
2270 av_extend (av, AvFILLp (defav) + 1 + 1); 3185MODULE = Coro::State PACKAGE = PerlIO::cede
2271 3186
2272 for (i = 0; i <= AvFILLp (defav); ++i) 3187BOOT:
2273 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3188 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2274 3189
2275 av_push (av, data_sv);
2276 3190
2277 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3191MODULE = Coro::State PACKAGE = Coro::Semaphore
2278 3192
2279 api_ready (self); 3193SV *
2280} 3194new (SV *klass, SV *count = 0)
3195 CODE:
3196 RETVAL = sv_bless (
3197 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3198 GvSTASH (CvGV (cv))
3199 );
3200 OUTPUT:
3201 RETVAL
3202
3203# helper for Coro::Channel
3204SV *
3205_alloc (int count)
3206 CODE:
3207 RETVAL = coro_waitarray_new (aTHX_ count);
3208 OUTPUT:
3209 RETVAL
3210
3211SV *
3212count (SV *self)
3213 CODE:
3214 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3215 OUTPUT:
3216 RETVAL
2281 3217
2282void 3218void
2283_set_state (SV *state) 3219up (SV *self, int adjust = 1)
2284 PROTOTYPE: $ 3220 ALIAS:
3221 adjust = 1
3222 CODE:
3223 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3224
3225void
3226down (...)
3227 CODE:
3228 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3229
3230void
3231wait (...)
3232 CODE:
3233 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3234
3235void
3236try (SV *self)
3237 PPCODE:
3238{
3239 AV *av = (AV *)SvRV (self);
3240 SV *count_sv = AvARRAY (av)[0];
3241 IV count = SvIVX (count_sv);
3242
3243 if (count > 0)
3244 {
3245 --count;
3246 SvIVX (count_sv) = count;
3247 XSRETURN_YES;
3248 }
3249 else
3250 XSRETURN_NO;
3251}
3252
3253void
3254waiters (SV *self)
3255 PPCODE:
3256{
3257 AV *av = (AV *)SvRV (self);
3258 int wcount = AvFILLp (av) + 1 - 1;
3259
3260 if (GIMME_V == G_SCALAR)
3261 XPUSHs (sv_2mortal (newSViv (wcount)));
3262 else
3263 {
3264 int i;
3265 EXTEND (SP, wcount);
3266 for (i = 1; i <= wcount; ++i)
3267 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3268 }
3269}
3270
3271MODULE = Coro::State PACKAGE = Coro::Signal
3272
3273SV *
3274new (SV *klass)
2285 PPCODE: 3275 CODE:
3276 RETVAL = sv_bless (
3277 coro_waitarray_new (aTHX_ 0),
3278 GvSTASH (CvGV (cv))
3279 );
3280 OUTPUT:
3281 RETVAL
3282
3283void
3284wait (...)
3285 CODE:
3286 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3287
3288void
3289broadcast (SV *self)
3290 CODE:
2286{ 3291{
2287 AV *av = (AV *)SvRV (state); 3292 AV *av = (AV *)SvRV (self);
2288 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3293 coro_signal_wake (aTHX_ av, AvFILLp (av));
2289 int i; 3294}
2290 3295
2291 errno = data->errorno; 3296void
2292 PL_laststype = data->laststype; 3297send (SV *self)
2293 PL_laststatval = data->laststatval; 3298 CODE:
2294 PL_statcache = data->statcache; 3299{
3300 AV *av = (AV *)SvRV (self);
2295 3301
2296 EXTEND (SP, AvFILLp (av)); 3302 if (AvFILLp (av))
2297 for (i = 0; i < AvFILLp (av); ++i) 3303 coro_signal_wake (aTHX_ av, 1);
2298 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3304 else
3305 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2299} 3306}
3307
3308IV
3309awaited (SV *self)
3310 CODE:
3311 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3312 OUTPUT:
3313 RETVAL
2300 3314
2301 3315
2302MODULE = Coro::State PACKAGE = Coro::AnyEvent 3316MODULE = Coro::State PACKAGE = Coro::AnyEvent
2303 3317
2304BOOT: 3318BOOT:
2305 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3319 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2306 3320
2307SV * 3321void
2308_schedule (...) 3322_schedule (...)
2309 PROTOTYPE: @
2310 CODE: 3323 CODE:
2311{ 3324{
2312 static int incede; 3325 static int incede;
2313 3326
2314 api_cede_notself (); 3327 api_cede_notself (aTHX);
2315 3328
2316 ++incede; 3329 ++incede;
2317 while (coro_nready >= incede && api_cede ()) 3330 while (coro_nready >= incede && api_cede (aTHX))
2318 ; 3331 ;
2319 3332
2320 sv_setsv (sv_activity, &PL_sv_undef); 3333 sv_setsv (sv_activity, &PL_sv_undef);
2321 if (coro_nready >= incede) 3334 if (coro_nready >= incede)
2322 { 3335 {
2323 PUSHMARK (SP); 3336 PUSHMARK (SP);
2324 PUTBACK; 3337 PUTBACK;
2325 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3338 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2326 SPAGAIN;
2327 } 3339 }
2328 3340
2329 --incede; 3341 --incede;
2330} 3342}
2331 3343
2332 3344
2333MODULE = Coro::State PACKAGE = PerlIO::cede 3345MODULE = Coro::State PACKAGE = Coro::AIO
2334 3346
2335BOOT: 3347void
2336 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3348_register (char *target, char *proto, SV *req)
3349 CODE:
3350{
3351 CV *req_cv = coro_sv_2cv (aTHX_ req);
3352 /* newXSproto doesn't return the CV on 5.8 */
3353 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3354 sv_setpv ((SV *)slf_cv, proto);
3355 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3356}
3357

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