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Comparing Coro/Coro/State.xs (file contents):
Revision 1.238 by root, Sat May 31 12:10:55 2008 UTC vs.
Revision 1.299 by root, Wed Nov 19 00:06:55 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
… …
45# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
46#endif 47#endif
47 48
48#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
49# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
50# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51#else
52# define REGISTER_STACK(cctx,start,end)
53#endif 51#endif
54 52
55/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
56#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
57 55
58#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
59 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
60 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
80# ifndef IS_PADCONST 78# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
82# endif 80# endif
83#endif 81#endif
84 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
85/* 5.8.8 */ 93/* 5.8.8 */
86#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
87# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
88#endif 96#endif
89#ifndef newSV 97#ifndef newSV
90# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
91#endif 99#endif
92 100#ifndef CvISXSUB_on
93/* 5.11 */ 101# define CvISXSUB_on(cv) (void)cv
94#ifndef CxHASARGS
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96#endif 102#endif
97 103
98/* 5.8.7 */ 104/* 5.8.7 */
99#ifndef SvRV_set 105#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
… …
113# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif 120#endif
115 121
116/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
117 * portable way as possible. */ 123 * portable way as possible. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
118#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
119#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
120 131
121#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
122 133
123#if __GNUC__ >= 3 134#if __GNUC__ >= 3
124# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value)) 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
127#else 138#else
128# define attribute(x) 139# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr) 140# define expect(expr,value) (expr)
141# define INLINE static
131#endif 142#endif
132 143
133#define expect_false(expr) expect ((expr) != 0, 0) 144#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
135 146
136#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
137 148
138#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
139 151
140#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
141static perl_mutex coro_mutex; 153# if CORO_PTHREAD
142# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 154static void *coro_thx;
143# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
144#else
145# define LOCK (void)0
146# define UNLOCK (void)0
147#endif 155# endif
156#endif
148 157
149/* helper storage struct for Coro::AIO */ 158static double (*nvtime)(); /* so why doesn't it take void? */
150struct io_state
151{
152 int errorno;
153 I32 laststype;
154 int laststatval;
155 Stat_t statcache;
156};
157 159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
163
164static U32 cctx_gen;
158static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 168static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
164 171
165static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 174static SV *rv_diehook;
168static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189}; 196};
190 197
191/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
192typedef struct coro_cctx { 199typedef struct coro_cctx
200{
193 struct coro_cctx *next; 201 struct coro_cctx *next;
194 202
195 /* the stack */ 203 /* the stack */
196 void *sptr; 204 void *sptr;
197 size_t ssize; 205 size_t ssize;
… …
200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202 JMPENV *top_env; 210 JMPENV *top_env;
203 coro_context cctx; 211 coro_context cctx;
204 212
213 U32 gen;
205#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
206 int valgrind_id; 215 int valgrind_id;
207#endif 216#endif
208 unsigned char flags; 217 unsigned char flags;
209} coro_cctx; 218} coro_cctx;
… …
214 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
215 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
216}; 225};
217 226
218/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
219typedef struct { 228typedef struct
229{
220 SV *defsv; 230 SV *defsv;
221 AV *defav; 231 AV *defav;
222 SV *errsv; 232 SV *errsv;
223 SV *irsgv; 233 SV *irsgv;
224#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
228 238
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
230 240
231/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
232struct coro { 242struct coro {
233 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 244 coro_cctx *cctx;
235 245
236 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
237 AV *mainstack; 248 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
239 250
240 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
241 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
242 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
243 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
244 256
245 /* statistics */ 257 /* statistics */
246 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
247 259
248 /* coro process data */ 260 /* coro process data */
249 int prio; 261 int prio;
250 SV *throw; /* exception to be thrown */ 262 SV *except; /* exception to be thrown */
251 263
252 /* async_pool */ 264 /* async_pool */
253 SV *saved_deffh; 265 SV *saved_deffh;
254 266
255 /* linked list */ 267 /* linked list */
256 struct coro *next, *prev; 268 struct coro *next, *prev;
257}; 269};
258 270
259typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
260typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273
274/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */
261 278
262/** Coro ********************************************************************/ 279/** Coro ********************************************************************/
263 280
264#define PRIO_MAX 3 281#define PRIO_MAX 3
265#define PRIO_HIGH 1 282#define PRIO_HIGH 1
… …
269#define PRIO_MIN -4 286#define PRIO_MIN -4
270 287
271/* for Coro.pm */ 288/* for Coro.pm */
272static SV *coro_current; 289static SV *coro_current;
273static SV *coro_readyhook; 290static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 291static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275static int coro_nready;
276static struct coro *coro_first; 292static struct coro *coro_first;
293#define coro_nready coroapi.nready
277 294
278/** lowlevel stuff **********************************************************/ 295/** lowlevel stuff **********************************************************/
279 296
280static SV * 297static SV *
281coro_get_sv (pTHX_ const char *name, int create) 298coro_get_sv (pTHX_ const char *name, int create)
… …
321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 338 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322#endif 339#endif
323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 340 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324 --AvFILLp (padlist); 341 --AvFILLp (padlist);
325 342
326 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 343 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
327 av_store (newpadlist, 1, (SV *)newpad); 344 av_store (newpadlist, 1, (SV *)newpad);
328 345
329 return newpadlist; 346 return newpadlist;
330} 347}
331 348
… …
361 378
362 /* casting is fun. */ 379 /* casting is fun. */
363 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 380 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
364 free_padlist (aTHX_ padlist); 381 free_padlist (aTHX_ padlist);
365 382
383 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
384
366 return 0; 385 return 0;
367} 386}
368 387
369#define CORO_MAGIC_type_cv PERL_MAGIC_ext 388#define CORO_MAGIC_type_cv 26
370#define CORO_MAGIC_type_state PERL_MAGIC_ext 389#define CORO_MAGIC_type_state PERL_MAGIC_ext
371 390
372static MGVTBL coro_cv_vtbl = { 391static MGVTBL coro_cv_vtbl = {
373 0, 0, 0, 0, 392 0, 0, 0, 0,
374 coro_cv_free 393 coro_cv_free
375}; 394};
376 395
396#define CORO_MAGIC_NN(sv, type) \
397 (expect_true (SvMAGIC (sv)->mg_type == type) \
398 ? SvMAGIC (sv) \
399 : mg_find (sv, type))
400
377#define CORO_MAGIC(sv,type) \ 401#define CORO_MAGIC(sv, type) \
378 SvMAGIC (sv) \ 402 (expect_true (SvMAGIC (sv)) \
379 ? SvMAGIC (sv)->mg_type == type \ 403 ? CORO_MAGIC_NN (sv, type) \
380 ? SvMAGIC (sv) \
381 : mg_find (sv, type) \
382 : 0 404 : 0)
383 405
384#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 406#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
385#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 407#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
386 408
387static struct coro * 409INLINE struct coro *
388SvSTATE_ (pTHX_ SV *coro) 410SvSTATE_ (pTHX_ SV *coro)
389{ 411{
390 HV *stash; 412 HV *stash;
391 MAGIC *mg; 413 MAGIC *mg;
392 414
… …
407 mg = CORO_MAGIC_state (coro); 429 mg = CORO_MAGIC_state (coro);
408 return (struct coro *)mg->mg_ptr; 430 return (struct coro *)mg->mg_ptr;
409} 431}
410 432
411#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 433#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
434
435/* faster than SvSTATE, but expects a coroutine hv */
436#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
437#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
412 438
413/* the next two functions merely cache the padlists */ 439/* the next two functions merely cache the padlists */
414static void 440static void
415get_padlist (pTHX_ CV *cv) 441get_padlist (pTHX_ CV *cv)
416{ 442{
… …
420 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 446 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
421 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 447 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
422 else 448 else
423 { 449 {
424#if CORO_PREFER_PERL_FUNCTIONS 450#if CORO_PREFER_PERL_FUNCTIONS
425 /* this is probably cleaner, but also slower? */ 451 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */
426 CV *cp = Perl_cv_clone (cv); 453 CV *cp = Perl_cv_clone (cv);
427 CvPADLIST (cv) = CvPADLIST (cp); 454 CvPADLIST (cv) = CvPADLIST (cp);
428 CvPADLIST (cp) = 0; 455 CvPADLIST (cp) = 0;
429 SvREFCNT_dec (cp); 456 SvREFCNT_dec (cp);
430#else 457#else
… …
482 CvPADLIST (cv) = (AV *)POPs; 509 CvPADLIST (cv) = (AV *)POPs;
483 } 510 }
484 511
485 PUTBACK; 512 PUTBACK;
486 } 513 }
514
515 slf_frame = c->slf_frame;
516 CORO_THROW = c->except;
487} 517}
488 518
489static void 519static void
490save_perl (pTHX_ Coro__State c) 520save_perl (pTHX_ Coro__State c)
491{ 521{
522 c->except = CORO_THROW;
523 c->slf_frame = slf_frame;
524
492 { 525 {
493 dSP; 526 dSP;
494 I32 cxix = cxstack_ix; 527 I32 cxix = cxstack_ix;
495 PERL_CONTEXT *ccstk = cxstack; 528 PERL_CONTEXT *ccstk = cxstack;
496 PERL_SI *top_si = PL_curstackinfo; 529 PERL_SI *top_si = PL_curstackinfo;
… …
563 #undef VAR 596 #undef VAR
564 } 597 }
565} 598}
566 599
567/* 600/*
568 * allocate various perl stacks. This is an exact copy 601 * allocate various perl stacks. This is almost an exact copy
569 * of perl.c:init_stacks, except that it uses less memory 602 * of perl.c:init_stacks, except that it uses less memory
570 * on the (sometimes correct) assumption that coroutines do 603 * on the (sometimes correct) assumption that coroutines do
571 * not usually need a lot of stackspace. 604 * not usually need a lot of stackspace.
572 */ 605 */
573#if CORO_PREFER_PERL_FUNCTIONS 606#if CORO_PREFER_PERL_FUNCTIONS
… …
616 649
617/* 650/*
618 * destroy the stacks, the callchain etc... 651 * destroy the stacks, the callchain etc...
619 */ 652 */
620static void 653static void
621coro_destroy_stacks (pTHX) 654coro_destruct_stacks (pTHX)
622{ 655{
623 while (PL_curstackinfo->si_next) 656 while (PL_curstackinfo->si_next)
624 PL_curstackinfo = PL_curstackinfo->si_next; 657 PL_curstackinfo = PL_curstackinfo->si_next;
625 658
626 while (PL_curstackinfo) 659 while (PL_curstackinfo)
… …
663 #undef VAR 696 #undef VAR
664 } 697 }
665 else 698 else
666 slot = coro->slot; 699 slot = coro->slot;
667 700
701 if (slot)
702 {
668 rss += sizeof (slot->curstackinfo); 703 rss += sizeof (slot->curstackinfo);
669 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 704 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
670 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 705 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
671 rss += slot->tmps_max * sizeof (SV *); 706 rss += slot->tmps_max * sizeof (SV *);
672 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 707 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
673 rss += slot->scopestack_max * sizeof (I32); 708 rss += slot->scopestack_max * sizeof (I32);
674 rss += slot->savestack_max * sizeof (ANY); 709 rss += slot->savestack_max * sizeof (ANY);
675 710
676#if !PERL_VERSION_ATLEAST (5,10,0) 711#if !PERL_VERSION_ATLEAST (5,10,0)
677 rss += slot->retstack_max * sizeof (OP *); 712 rss += slot->retstack_max * sizeof (OP *);
678#endif 713#endif
714 }
679 } 715 }
680 716
681 return rss; 717 return rss;
682} 718}
683 719
684/** coroutine stack handling ************************************************/ 720/** coroutine stack handling ************************************************/
685 721
686static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 722static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
687static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 723static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
724static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
688 725
689/* apparently < 5.8.8 */ 726/* apparently < 5.8.8 */
690#undef MgPV_nolen_const
691#ifndef MgPV_nolen_const 727#ifndef MgPV_nolen_const
692#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 728#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
693 SvPV_nolen_const((SV*)((mg)->mg_ptr)) : \ 729 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
694 (const char*)(mg)->mg_ptr) 730 (const char*)(mg)->mg_ptr)
695#endif 731#endif
696 732
697/* 733/*
698 * This overrides the default magic get method of %SIG elements. 734 * This overrides the default magic get method of %SIG elements.
… …
708{ 744{
709 const char *s = MgPV_nolen_const (mg); 745 const char *s = MgPV_nolen_const (mg);
710 746
711 if (*s == '_') 747 if (*s == '_')
712 { 748 {
713 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 749 SV **svp = 0;
714 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 750
751 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
752 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
753
754 if (svp)
755 {
756 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
757 return 0;
758 }
715 } 759 }
716 760
717 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 761 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
762}
763
764static int
765coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
766{
767 const char *s = MgPV_nolen_const (mg);
768
769 if (*s == '_')
770 {
771 SV **svp = 0;
772
773 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
774 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
775
776 if (svp)
777 {
778 SV *old = *svp;
779 *svp = 0;
780 SvREFCNT_dec (old);
781 return 0;
782 }
783 }
784
785 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
718} 786}
719 787
720static int 788static int
721coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 789coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
722{ 790{
… …
740 808
741 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 809 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
742} 810}
743 811
744static void 812static void
813prepare_nop (pTHX_ struct coro_transfer_args *ta)
814{
815 /* kind of mega-hacky, but works */
816 ta->next = ta->prev = (struct coro *)ta;
817}
818
819static int
820slf_check_nop (pTHX_ struct CoroSLF *frame)
821{
822 return 0;
823}
824
825static UNOP coro_setup_op;
826
827static void NOINLINE /* noinline to keep it out of the transfer fast path */
745coro_setup (pTHX_ struct coro *coro) 828coro_setup (pTHX_ struct coro *coro)
746{ 829{
747 /* 830 /*
748 * emulate part of the perl startup here. 831 * emulate part of the perl startup here.
749 */ 832 */
… …
769 GvSV (PL_defgv) = newSV (0); 852 GvSV (PL_defgv) = newSV (0);
770 GvAV (PL_defgv) = coro->args; coro->args = 0; 853 GvAV (PL_defgv) = coro->args; coro->args = 0;
771 GvSV (PL_errgv) = newSV (0); 854 GvSV (PL_errgv) = newSV (0);
772 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
773 PL_rs = newSVsv (GvSV (irsgv)); 856 PL_rs = newSVsv (GvSV (irsgv));
774 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
775 858
776 { 859 {
777 dSP; 860 dSP;
778 LOGOP myop; 861 UNOP myop;
779 862
780 Zero (&myop, 1, LOGOP); 863 Zero (&myop, 1, UNOP);
781 myop.op_next = Nullop; 864 myop.op_next = Nullop;
782 myop.op_flags = OPf_WANT_VOID; 865 myop.op_flags = OPf_WANT_VOID;
783 866
784 PUSHMARK (SP); 867 PUSHMARK (SP);
785 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
786 PUTBACK; 869 PUTBACK;
… …
788 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
789 SPAGAIN; 872 SPAGAIN;
790 } 873 }
791 874
792 /* this newly created coroutine might be run on an existing cctx which most 875 /* this newly created coroutine might be run on an existing cctx which most
793 * likely was suspended in set_stacklevel, called from entersub. 876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
794 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
795 * so we ENTER here for symmetry
796 */ 877 */
797 ENTER; 878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
798} 879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
799 880
881 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882 coro_setup_op.op_next = PL_op;
883 coro_setup_op.op_type = OP_CUSTOM;
884 coro_setup_op.op_ppaddr = pp_slf;
885 /* no flags required, as an init function won't be called */
886
887 PL_op = (OP *)&coro_setup_op;
888
889 /* copy throw, in case it was set before coro_setup */
890 CORO_THROW = coro->except;
891}
892
800static void 893static void
801coro_destroy (pTHX_ struct coro *coro) 894coro_destruct (pTHX_ struct coro *coro)
802{ 895{
803 if (!IN_DESTRUCT) 896 if (!IN_DESTRUCT)
804 { 897 {
805 /* restore all saved variables and stuff */ 898 /* restore all saved variables and stuff */
806 LEAVE_SCOPE (0); 899 LEAVE_SCOPE (0);
… …
826 919
827 SvREFCNT_dec (PL_diehook); 920 SvREFCNT_dec (PL_diehook);
828 SvREFCNT_dec (PL_warnhook); 921 SvREFCNT_dec (PL_warnhook);
829 922
830 SvREFCNT_dec (coro->saved_deffh); 923 SvREFCNT_dec (coro->saved_deffh);
831 SvREFCNT_dec (coro->throw); 924 SvREFCNT_dec (CORO_THROW);
832 925
833 coro_destroy_stacks (aTHX); 926 coro_destruct_stacks (aTHX);
834} 927}
835 928
836static void 929INLINE void
837free_coro_mortal (pTHX) 930free_coro_mortal (pTHX)
838{ 931{
839 if (expect_true (coro_mortal)) 932 if (expect_true (coro_mortal))
840 { 933 {
841 SvREFCNT_dec (coro_mortal); 934 SvREFCNT_dec (coro_mortal);
… …
846static int 939static int
847runops_trace (pTHX) 940runops_trace (pTHX)
848{ 941{
849 COP *oldcop = 0; 942 COP *oldcop = 0;
850 int oldcxix = -2; 943 int oldcxix = -2;
851 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 944 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
852 coro_cctx *cctx = coro->cctx; 945 coro_cctx *cctx = coro->cctx;
853 946
854 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
855 { 948 {
856 PERL_ASYNC_CHECK (); 949 PERL_ASYNC_CHECK ();
… …
875 : cx->blk_gimme == G_SCALAR ? bot + 1 968 : cx->blk_gimme == G_SCALAR ? bot + 1
876 : bot; 969 : bot;
877 970
878 av_extend (av, top - bot); 971 av_extend (av, top - bot);
879 while (bot < top) 972 while (bot < top)
880 av_push (av, SvREFCNT_inc (*bot++)); 973 av_push (av, SvREFCNT_inc_NN (*bot++));
881 974
882 PL_runops = RUNOPS_DEFAULT; 975 PL_runops = RUNOPS_DEFAULT;
883 ENTER; 976 ENTER;
884 SAVETMPS; 977 SAVETMPS;
885 EXTEND (SP, 3); 978 EXTEND (SP, 3);
… …
965 1058
966 TAINT_NOT; 1059 TAINT_NOT;
967 return 0; 1060 return 0;
968} 1061}
969 1062
970/* inject a fake call to Coro::State::_cctx_init into the execution */ 1063static struct coro_cctx *cctx_ssl_cctx;
971/* _cctx_init should be careful, as it could be called at almost any time */ 1064static struct CoroSLF cctx_ssl_frame;
972/* during execution of a perl program */ 1065
1066static void
1067slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068{
1069 ta->prev = (struct coro *)cctx_ssl_cctx;
1070 ta->next = 0;
1071}
1072
1073static int
1074slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075{
1076 *frame = cctx_ssl_frame;
1077
1078 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079}
1080
1081/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
973static void NOINLINE 1082static void NOINLINE
974cctx_prepare (pTHX_ coro_cctx *cctx) 1083cctx_prepare (pTHX_ coro_cctx *cctx)
975{ 1084{
976 dSP;
977 LOGOP myop;
978
979 PL_top_env = &PL_start_env; 1085 PL_top_env = &PL_start_env;
980 1086
981 if (cctx->flags & CC_TRACE) 1087 if (cctx->flags & CC_TRACE)
982 PL_runops = runops_trace; 1088 PL_runops = runops_trace;
983 1089
984 Zero (&myop, 1, LOGOP); 1090 /* we already must be executing an SLF op, there is no other valid way
985 myop.op_next = PL_op; 1091 * that can lead to creation of a new cctx */
986 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1092 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
987 1094
988 PUSHMARK (SP); 1095 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
989 EXTEND (SP, 2); 1096 cctx_ssl_cctx = cctx;
990 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1097 cctx_ssl_frame = slf_frame;
991 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1098
992 PUTBACK; 1099 slf_frame.prepare = slf_prepare_set_stacklevel;
993 PL_op = (OP *)&myop; 1100 slf_frame.check = slf_check_set_stacklevel;
994 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1101}
995 SPAGAIN; 1102
1103/* the tail of transfer: execute stuff we can only do after a transfer */
1104INLINE void
1105transfer_tail (pTHX)
1106{
1107 free_coro_mortal (aTHX);
996} 1108}
997 1109
998/* 1110/*
999 * this is a _very_ stripped down perl interpreter ;) 1111 * this is a _very_ stripped down perl interpreter ;)
1000 */ 1112 */
1001static void 1113static void
1002cctx_run (void *arg) 1114cctx_run (void *arg)
1003{ 1115{
1116#ifdef USE_ITHREADS
1117# if CORO_PTHREAD
1118 PERL_SET_CONTEXT (coro_thx);
1119# endif
1120#endif
1121 {
1004 dTHX; 1122 dTHX;
1005 1123
1006 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1124 /* normally we would need to skip the entersub here */
1007 UNLOCK; 1125 /* not doing so will re-execute it, which is exactly what we want */
1008
1009 /* we now skip the entersub that lead to transfer() */
1010 PL_op = PL_op->op_next; 1126 /* PL_nop = PL_nop->op_next */
1011 1127
1012 /* inject a fake subroutine call to cctx_init */ 1128 /* inject a fake subroutine call to cctx_init */
1013 cctx_prepare (aTHX_ (coro_cctx *)arg); 1129 cctx_prepare (aTHX_ (coro_cctx *)arg);
1014 1130
1131 /* cctx_run is the alternative tail of transfer() */
1132 transfer_tail (aTHX);
1133
1015 /* somebody or something will hit me for both perl_run and PL_restartop */ 1134 /* somebody or something will hit me for both perl_run and PL_restartop */
1016 PL_restartop = PL_op; 1135 PL_restartop = PL_op;
1017 perl_run (PL_curinterp); 1136 perl_run (PL_curinterp);
1018 1137
1019 /* 1138 /*
1020 * If perl-run returns we assume exit() was being called or the coro 1139 * If perl-run returns we assume exit() was being called or the coro
1021 * fell off the end, which seems to be the only valid (non-bug) 1140 * fell off the end, which seems to be the only valid (non-bug)
1022 * reason for perl_run to return. We try to exit by jumping to the 1141 * reason for perl_run to return. We try to exit by jumping to the
1023 * bootstrap-time "top" top_env, as we cannot restore the "main" 1142 * bootstrap-time "top" top_env, as we cannot restore the "main"
1024 * coroutine as Coro has no such concept 1143 * coroutine as Coro has no such concept
1025 */ 1144 */
1026 PL_top_env = main_top_env; 1145 PL_top_env = main_top_env;
1027 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1146 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1147 }
1028} 1148}
1029 1149
1030static coro_cctx * 1150static coro_cctx *
1031cctx_new () 1151cctx_new ()
1032{ 1152{
1033 coro_cctx *cctx; 1153 coro_cctx *cctx;
1154
1155 ++cctx_count;
1156 New (0, cctx, 1, coro_cctx);
1157
1158 cctx->gen = cctx_gen;
1159 cctx->flags = 0;
1160 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1161
1162 return cctx;
1163}
1164
1165/* create a new cctx only suitable as source */
1166static coro_cctx *
1167cctx_new_empty ()
1168{
1169 coro_cctx *cctx = cctx_new ();
1170
1171 cctx->sptr = 0;
1172 coro_create (&cctx->cctx, 0, 0, 0, 0);
1173
1174 return cctx;
1175}
1176
1177/* create a new cctx suitable as destination/running a perl interpreter */
1178static coro_cctx *
1179cctx_new_run ()
1180{
1181 coro_cctx *cctx = cctx_new ();
1034 void *stack_start; 1182 void *stack_start;
1035 size_t stack_size; 1183 size_t stack_size;
1036 1184
1037 ++cctx_count;
1038
1039 Newz (0, cctx, 1, coro_cctx);
1040
1041#if HAVE_MMAP 1185#if HAVE_MMAP
1042 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1186 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1043 /* mmap supposedly does allocate-on-write for us */ 1187 /* mmap supposedly does allocate-on-write for us */
1044 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1188 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1045 1189
1046 if (cctx->sptr != (void *)-1) 1190 if (cctx->sptr != (void *)-1)
1047 { 1191 {
1048# if CORO_STACKGUARD 1192 #if CORO_STACKGUARD
1049 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1193 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1050# endif 1194 #endif
1051 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1195 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1052 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1196 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1053 cctx->flags |= CC_MAPPED; 1197 cctx->flags |= CC_MAPPED;
1054 } 1198 }
1055 else 1199 else
1056#endif 1200#endif
1057 { 1201 {
1058 cctx->ssize = coro_stacksize * (long)sizeof (long); 1202 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1059 New (0, cctx->sptr, coro_stacksize, long); 1203 New (0, cctx->sptr, cctx_stacksize, long);
1060 1204
1061 if (!cctx->sptr) 1205 if (!cctx->sptr)
1062 { 1206 {
1063 perror ("FATAL: unable to allocate stack for coroutine"); 1207 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1064 _exit (EXIT_FAILURE); 1208 _exit (EXIT_FAILURE);
1065 } 1209 }
1066 1210
1067 stack_start = cctx->sptr; 1211 stack_start = cctx->sptr;
1068 stack_size = cctx->ssize; 1212 stack_size = cctx->ssize;
1069 } 1213 }
1070 1214
1071 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1215 #if CORO_USE_VALGRIND
1216 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1217 #endif
1218
1072 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1219 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1073 1220
1074 return cctx; 1221 return cctx;
1075} 1222}
1076 1223
… …
1079{ 1226{
1080 if (!cctx) 1227 if (!cctx)
1081 return; 1228 return;
1082 1229
1083 --cctx_count; 1230 --cctx_count;
1231 coro_destroy (&cctx->cctx);
1084 1232
1233 /* coro_transfer creates new, empty cctx's */
1234 if (cctx->sptr)
1235 {
1085#if CORO_USE_VALGRIND 1236 #if CORO_USE_VALGRIND
1086 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1237 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1087#endif 1238 #endif
1088 1239
1089#if HAVE_MMAP 1240#if HAVE_MMAP
1090 if (cctx->flags & CC_MAPPED) 1241 if (cctx->flags & CC_MAPPED)
1091 munmap (cctx->sptr, cctx->ssize); 1242 munmap (cctx->sptr, cctx->ssize);
1092 else 1243 else
1093#endif 1244#endif
1094 Safefree (cctx->sptr); 1245 Safefree (cctx->sptr);
1246 }
1095 1247
1096 Safefree (cctx); 1248 Safefree (cctx);
1097} 1249}
1098 1250
1099/* wether this cctx should be destructed */ 1251/* wether this cctx should be destructed */
1100#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1252#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1101 1253
1102static coro_cctx * 1254static coro_cctx *
1103cctx_get (pTHX) 1255cctx_get (pTHX)
1104{ 1256{
1105 while (expect_true (cctx_first)) 1257 while (expect_true (cctx_first))
… …
1112 return cctx; 1264 return cctx;
1113 1265
1114 cctx_destroy (cctx); 1266 cctx_destroy (cctx);
1115 } 1267 }
1116 1268
1117 return cctx_new (); 1269 return cctx_new_run ();
1118} 1270}
1119 1271
1120static void 1272static void
1121cctx_put (coro_cctx *cctx) 1273cctx_put (coro_cctx *cctx)
1122{ 1274{
1275 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1276
1123 /* free another cctx if overlimit */ 1277 /* free another cctx if overlimit */
1124 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1278 if (expect_false (cctx_idle >= cctx_max_idle))
1125 { 1279 {
1126 coro_cctx *first = cctx_first; 1280 coro_cctx *first = cctx_first;
1127 cctx_first = first->next; 1281 cctx_first = first->next;
1128 --cctx_idle; 1282 --cctx_idle;
1129 1283
… …
1138/** coroutine switching *****************************************************/ 1292/** coroutine switching *****************************************************/
1139 1293
1140static void 1294static void
1141transfer_check (pTHX_ struct coro *prev, struct coro *next) 1295transfer_check (pTHX_ struct coro *prev, struct coro *next)
1142{ 1296{
1297 /* TODO: throwing up here is considered harmful */
1298
1143 if (expect_true (prev != next)) 1299 if (expect_true (prev != next))
1144 { 1300 {
1145 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1146 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1147 1303
1148 if (expect_false (next->flags & CF_RUNNING)) 1304 if (expect_false (next->flags & CF_RUNNING))
1149 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1150 1306
1151 if (expect_false (next->flags & CF_DESTROYED)) 1307 if (expect_false (next->flags & CF_DESTROYED))
1152 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1153 1309
1154#if !PERL_VERSION_ATLEAST (5,10,0) 1310#if !PERL_VERSION_ATLEAST (5,10,0)
1155 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1311 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1156 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1157#endif 1313#endif
1158 } 1314 }
1159} 1315}
1160 1316
1161/* always use the TRANSFER macro */ 1317/* always use the TRANSFER macro */
1162static void NOINLINE 1318static void NOINLINE /* noinline so we have a fixed stackframe */
1163transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1164{ 1320{
1165 dSTACKLEVEL; 1321 dSTACKLEVEL;
1166 static volatile int has_throw;
1167 1322
1168 /* sometimes transfer is only called to set idle_sp */ 1323 /* sometimes transfer is only called to set idle_sp */
1169 if (expect_false (!next)) 1324 if (expect_false (!next))
1170 { 1325 {
1171 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
… …
1175 { 1330 {
1176 coro_cctx *prev__cctx; 1331 coro_cctx *prev__cctx;
1177 1332
1178 if (expect_false (prev->flags & CF_NEW)) 1333 if (expect_false (prev->flags & CF_NEW))
1179 { 1334 {
1180 /* create a new empty context */ 1335 /* create a new empty/source context */
1181 Newz (0, prev->cctx, 1, coro_cctx); 1336 prev->cctx = cctx_new_empty ();
1182 prev->flags &= ~CF_NEW; 1337 prev->flags &= ~CF_NEW;
1183 prev->flags |= CF_RUNNING; 1338 prev->flags |= CF_RUNNING;
1184 } 1339 }
1185 1340
1186 prev->flags &= ~CF_RUNNING; 1341 prev->flags &= ~CF_RUNNING;
1187 next->flags |= CF_RUNNING; 1342 next->flags |= CF_RUNNING;
1188
1189 LOCK;
1190 1343
1191 /* first get rid of the old state */ 1344 /* first get rid of the old state */
1192 save_perl (aTHX_ prev); 1345 save_perl (aTHX_ prev);
1193 1346
1194 if (expect_false (next->flags & CF_NEW)) 1347 if (expect_false (next->flags & CF_NEW))
… …
1201 else 1354 else
1202 load_perl (aTHX_ next); 1355 load_perl (aTHX_ next);
1203 1356
1204 prev__cctx = prev->cctx; 1357 prev__cctx = prev->cctx;
1205 1358
1206 /* possibly "free" the cctx */ 1359 /* possibly untie and reuse the cctx */
1207 if (expect_true ( 1360 if (expect_true (
1208 prev__cctx->idle_sp == STACKLEVEL 1361 prev__cctx->idle_sp == STACKLEVEL
1209 && !(prev__cctx->flags & CC_TRACE) 1362 && !(prev__cctx->flags & CC_TRACE)
1210 && !force_cctx 1363 && !force_cctx
1211 )) 1364 ))
1212 { 1365 {
1213 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1366 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1214 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1367 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1215 1368
1216 prev->cctx = 0; 1369 prev->cctx = 0;
1217 1370
1218 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1371 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1219 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1372 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1226 1379
1227 ++next->usecount; 1380 ++next->usecount;
1228 1381
1229 if (expect_true (!next->cctx)) 1382 if (expect_true (!next->cctx))
1230 next->cctx = cctx_get (aTHX); 1383 next->cctx = cctx_get (aTHX);
1231
1232 has_throw = !!next->throw;
1233 1384
1234 if (expect_false (prev__cctx != next->cctx)) 1385 if (expect_false (prev__cctx != next->cctx))
1235 { 1386 {
1236 prev__cctx->top_env = PL_top_env; 1387 prev__cctx->top_env = PL_top_env;
1237 PL_top_env = next->cctx->top_env; 1388 PL_top_env = next->cctx->top_env;
1238 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1239 } 1390 }
1240 1391
1241 free_coro_mortal (aTHX); 1392 transfer_tail (aTHX);
1242 UNLOCK;
1243
1244 if (expect_false (has_throw))
1245 {
1246 struct coro *coro = SvSTATE (coro_current);
1247
1248 if (coro->throw)
1249 {
1250 SV *exception = coro->throw;
1251 coro->throw = 0;
1252 sv_setsv (ERRSV, exception);
1253 croak (0);
1254 }
1255 }
1256 } 1393 }
1257} 1394}
1258
1259struct transfer_args
1260{
1261 struct coro *prev, *next;
1262};
1263 1395
1264#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1265#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1266 1398
1267/** high level stuff ********************************************************/ 1399/** high level stuff ********************************************************/
… …
1269static int 1401static int
1270coro_state_destroy (pTHX_ struct coro *coro) 1402coro_state_destroy (pTHX_ struct coro *coro)
1271{ 1403{
1272 if (coro->flags & CF_DESTROYED) 1404 if (coro->flags & CF_DESTROYED)
1273 return 0; 1405 return 0;
1406
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro);
1274 1409
1275 coro->flags |= CF_DESTROYED; 1410 coro->flags |= CF_DESTROYED;
1276 1411
1277 if (coro->flags & CF_READY) 1412 if (coro->flags & CF_READY)
1278 { 1413 {
1279 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1414 /* reduce nready, as destroying a ready coro effectively unreadies it */
1280 /* alternative: look through all ready queues and remove the coro */ 1415 /* alternative: look through all ready queues and remove the coro */
1281 LOCK;
1282 --coro_nready; 1416 --coro_nready;
1283 UNLOCK;
1284 } 1417 }
1285 else 1418 else
1286 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1287 1420
1288 if (coro->mainstack && coro->mainstack != main_mainstack) 1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1289 { 1422 {
1290 struct coro temp; 1423 struct coro temp;
1291 1424
1292 if (coro->flags & CF_RUNNING) 1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1293 croak ("FATAL: tried to destroy currently running coroutine");
1294 1426
1295 save_perl (aTHX_ &temp); 1427 save_perl (aTHX_ &temp);
1296 load_perl (aTHX_ coro); 1428 load_perl (aTHX_ coro);
1297 1429
1298 coro_destroy (aTHX_ coro); 1430 coro_destruct (aTHX_ coro);
1299 1431
1300 load_perl (aTHX_ &temp); 1432 load_perl (aTHX_ &temp);
1301 1433
1302 coro->slot = 0; 1434 coro->slot = 0;
1303 } 1435 }
… …
1349# define MGf_DUP 0 1481# define MGf_DUP 0
1350#endif 1482#endif
1351}; 1483};
1352 1484
1353static void 1485static void
1354prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1486prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1355{ 1487{
1356 ta->prev = SvSTATE (prev_sv); 1488 ta->prev = SvSTATE (prev_sv);
1357 ta->next = SvSTATE (next_sv); 1489 ta->next = SvSTATE (next_sv);
1358 TRANSFER_CHECK (*ta); 1490 TRANSFER_CHECK (*ta);
1359} 1491}
1360 1492
1361static void 1493static void
1362api_transfer (SV *prev_sv, SV *next_sv) 1494api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1363{ 1495{
1364 dTHX;
1365 struct transfer_args ta; 1496 struct coro_transfer_args ta;
1366 1497
1367 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1368 TRANSFER (ta, 1); 1499 TRANSFER (ta, 1);
1369} 1500}
1370 1501
1371/** Coro ********************************************************************/ 1502/** Coro ********************************************************************/
1372 1503
1373static void 1504INLINE void
1374coro_enq (pTHX_ SV *coro_sv) 1505coro_enq (pTHX_ struct coro *coro)
1375{ 1506{
1376 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1377} 1508}
1378 1509
1379static SV * 1510INLINE SV *
1380coro_deq (pTHX) 1511coro_deq (pTHX)
1381{ 1512{
1382 int prio; 1513 int prio;
1383 1514
1384 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1387 1518
1388 return 0; 1519 return 0;
1389} 1520}
1390 1521
1391static int 1522static int
1392api_ready (SV *coro_sv) 1523api_ready (pTHX_ SV *coro_sv)
1393{ 1524{
1394 dTHX;
1395 struct coro *coro; 1525 struct coro *coro;
1396 SV *sv_hook; 1526 SV *sv_hook;
1397 void (*xs_hook)(void); 1527 void (*xs_hook)(void);
1398 1528
1399 if (SvROK (coro_sv)) 1529 if (SvROK (coro_sv))
… …
1404 if (coro->flags & CF_READY) 1534 if (coro->flags & CF_READY)
1405 return 0; 1535 return 0;
1406 1536
1407 coro->flags |= CF_READY; 1537 coro->flags |= CF_READY;
1408 1538
1409 LOCK;
1410
1411 sv_hook = coro_nready ? 0 : coro_readyhook; 1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1412 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1413 1541
1414 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1542 coro_enq (aTHX_ coro);
1415 ++coro_nready; 1543 ++coro_nready;
1416 1544
1417 UNLOCK;
1418
1419 if (sv_hook) 1545 if (sv_hook)
1420 { 1546 {
1421 dSP; 1547 dSP;
1422 1548
1423 ENTER; 1549 ENTER;
1424 SAVETMPS; 1550 SAVETMPS;
1425 1551
1426 PUSHMARK (SP); 1552 PUSHMARK (SP);
1427 PUTBACK; 1553 PUTBACK;
1428 call_sv (sv_hook, G_DISCARD); 1554 call_sv (sv_hook, G_VOID | G_DISCARD);
1429 SPAGAIN;
1430 1555
1431 FREETMPS; 1556 FREETMPS;
1432 LEAVE; 1557 LEAVE;
1433 } 1558 }
1434 1559
… …
1437 1562
1438 return 1; 1563 return 1;
1439} 1564}
1440 1565
1441static int 1566static int
1442api_is_ready (SV *coro_sv) 1567api_is_ready (pTHX_ SV *coro_sv)
1443{ 1568{
1444 dTHX;
1445 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1569 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1446} 1570}
1447 1571
1448static void 1572INLINE void
1449prepare_schedule (pTHX_ struct transfer_args *ta) 1573prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1450{ 1574{
1451 SV *prev_sv, *next_sv; 1575 SV *prev_sv, *next_sv;
1452 1576
1453 for (;;) 1577 for (;;)
1454 { 1578 {
1455 LOCK;
1456 next_sv = coro_deq (aTHX); 1579 next_sv = coro_deq (aTHX);
1457 1580
1458 /* nothing to schedule: call the idle handler */ 1581 /* nothing to schedule: call the idle handler */
1459 if (expect_false (!next_sv)) 1582 if (expect_false (!next_sv))
1460 { 1583 {
1461 dSP; 1584 dSP;
1462 UNLOCK;
1463 1585
1464 ENTER; 1586 ENTER;
1465 SAVETMPS; 1587 SAVETMPS;
1466 1588
1467 PUSHMARK (SP); 1589 PUSHMARK (SP);
1468 PUTBACK; 1590 PUTBACK;
1469 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1591 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1470 SPAGAIN;
1471 1592
1472 FREETMPS; 1593 FREETMPS;
1473 LEAVE; 1594 LEAVE;
1474 continue; 1595 continue;
1475 } 1596 }
1476 1597
1477 ta->next = SvSTATE (next_sv); 1598 ta->next = SvSTATE_hv (next_sv);
1478 1599
1479 /* cannot transfer to destroyed coros, skip and look for next */ 1600 /* cannot transfer to destroyed coros, skip and look for next */
1480 if (expect_false (ta->next->flags & CF_DESTROYED)) 1601 if (expect_false (ta->next->flags & CF_DESTROYED))
1481 { 1602 {
1482 UNLOCK;
1483 SvREFCNT_dec (next_sv); 1603 SvREFCNT_dec (next_sv);
1484 /* coro_nready is already taken care of by destroy */ 1604 /* coro_nready has already been taken care of by destroy */
1485 continue; 1605 continue;
1486 } 1606 }
1487 1607
1488 --coro_nready; 1608 --coro_nready;
1489 UNLOCK;
1490 break; 1609 break;
1491 } 1610 }
1492 1611
1493 /* free this only after the transfer */ 1612 /* free this only after the transfer */
1494 prev_sv = SvRV (coro_current); 1613 prev_sv = SvRV (coro_current);
1495 ta->prev = SvSTATE (prev_sv); 1614 ta->prev = SvSTATE_hv (prev_sv);
1496 TRANSFER_CHECK (*ta); 1615 TRANSFER_CHECK (*ta);
1497 assert (ta->next->flags & CF_READY); 1616 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1498 ta->next->flags &= ~CF_READY; 1617 ta->next->flags &= ~CF_READY;
1499 SvRV_set (coro_current, next_sv); 1618 SvRV_set (coro_current, next_sv);
1500 1619
1501 LOCK;
1502 free_coro_mortal (aTHX); 1620 free_coro_mortal (aTHX);
1503 coro_mortal = prev_sv; 1621 coro_mortal = prev_sv;
1504 UNLOCK;
1505} 1622}
1506 1623
1507static void 1624INLINE void
1508prepare_cede (pTHX_ struct transfer_args *ta) 1625prepare_cede (pTHX_ struct coro_transfer_args *ta)
1509{ 1626{
1510 api_ready (coro_current); 1627 api_ready (aTHX_ coro_current);
1511 prepare_schedule (aTHX_ ta); 1628 prepare_schedule (aTHX_ ta);
1512} 1629}
1513 1630
1631INLINE void
1632prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1633{
1634 SV *prev = SvRV (coro_current);
1635
1636 if (coro_nready)
1637 {
1638 prepare_schedule (aTHX_ ta);
1639 api_ready (aTHX_ prev);
1640 }
1641 else
1642 prepare_nop (aTHX_ ta);
1643}
1644
1645static void
1646api_schedule (pTHX)
1647{
1648 struct coro_transfer_args ta;
1649
1650 prepare_schedule (aTHX_ &ta);
1651 TRANSFER (ta, 1);
1652}
1653
1514static int 1654static int
1515prepare_cede_notself (pTHX_ struct transfer_args *ta) 1655api_cede (pTHX)
1516{ 1656{
1517 if (coro_nready) 1657 struct coro_transfer_args ta;
1518 { 1658
1519 SV *prev = SvRV (coro_current);
1520 prepare_schedule (aTHX_ ta); 1659 prepare_cede (aTHX_ &ta);
1521 api_ready (prev); 1660
1661 if (expect_true (ta.prev != ta.next))
1662 {
1663 TRANSFER (ta, 1);
1522 return 1; 1664 return 1;
1523 } 1665 }
1524 else 1666 else
1525 return 0; 1667 return 0;
1526} 1668}
1527 1669
1528static void
1529api_schedule (void)
1530{
1531 dTHX;
1532 struct transfer_args ta;
1533
1534 prepare_schedule (aTHX_ &ta);
1535 TRANSFER (ta, 1);
1536}
1537
1538static int 1670static int
1539api_cede (void) 1671api_cede_notself (pTHX)
1540{ 1672{
1541 dTHX; 1673 if (coro_nready)
1674 {
1542 struct transfer_args ta; 1675 struct coro_transfer_args ta;
1543 1676
1544 prepare_cede (aTHX_ &ta); 1677 prepare_cede_notself (aTHX_ &ta);
1545
1546 if (expect_true (ta.prev != ta.next))
1547 {
1548 TRANSFER (ta, 1); 1678 TRANSFER (ta, 1);
1549 return 1; 1679 return 1;
1550 } 1680 }
1551 else 1681 else
1552 return 0; 1682 return 0;
1553} 1683}
1554 1684
1555static int 1685static void
1556api_cede_notself (void)
1557{
1558 dTHX;
1559 struct transfer_args ta;
1560
1561 if (prepare_cede_notself (aTHX_ &ta))
1562 {
1563 TRANSFER (ta, 1);
1564 return 1;
1565 }
1566 else
1567 return 0;
1568}
1569
1570static void
1571api_trace (SV *coro_sv, int flags) 1686api_trace (pTHX_ SV *coro_sv, int flags)
1572{ 1687{
1573 dTHX;
1574 struct coro *coro = SvSTATE (coro_sv); 1688 struct coro *coro = SvSTATE (coro_sv);
1575 1689
1576 if (flags & CC_TRACE) 1690 if (flags & CC_TRACE)
1577 { 1691 {
1578 if (!coro->cctx) 1692 if (!coro->cctx)
1579 coro->cctx = cctx_new (); 1693 coro->cctx = cctx_new_run ();
1580 else if (!(coro->cctx->flags & CC_TRACE)) 1694 else if (!(coro->cctx->flags & CC_TRACE))
1581 croak ("cannot enable tracing on coroutine with custom stack"); 1695 croak ("cannot enable tracing on coroutine with custom stack,");
1582 1696
1583 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1697 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1584 } 1698 }
1585 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1699 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1586 { 1700 {
… …
1591 else 1705 else
1592 coro->slot->runops = RUNOPS_DEFAULT; 1706 coro->slot->runops = RUNOPS_DEFAULT;
1593 } 1707 }
1594} 1708}
1595 1709
1710/*****************************************************************************/
1711/* schedule-like-function opcode (SLF) */
1712
1713static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1714static const CV *slf_cv;
1715static SV **slf_argv;
1716static int slf_argc, slf_arga; /* count, allocated */
1717static I32 slf_ax; /* top of stack, for restore */
1718
1719/* this restores the stack in the case we patched the entersub, to */
1720/* recreate the stack frame as perl will on following calls */
1721/* since entersub cleared the stack */
1722static OP *
1723pp_restore (pTHX)
1724{
1725 int i;
1726 SV **SP = PL_stack_base + slf_ax;
1727
1728 PUSHMARK (SP);
1729
1730 EXTEND (SP, slf_argc + 1);
1731
1732 for (i = 0; i < slf_argc; ++i)
1733 PUSHs (sv_2mortal (slf_argv [i]));
1734
1735 PUSHs ((SV *)CvGV (slf_cv));
1736
1737 RETURNOP (slf_restore.op_first);
1738}
1739
1740static void
1741slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1742{
1743 SV **arg = (SV **)slf_frame.data;
1744
1745 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1746}
1747
1748static void
1749slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1750{
1751 if (items != 2)
1752 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1753
1754 frame->prepare = slf_prepare_transfer;
1755 frame->check = slf_check_nop;
1756 frame->data = (void *)arg; /* let's hope it will stay valid */
1757}
1758
1759static void
1760slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1761{
1762 frame->prepare = prepare_schedule;
1763 frame->check = slf_check_nop;
1764}
1765
1766static void
1767slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768{
1769 frame->prepare = prepare_cede;
1770 frame->check = slf_check_nop;
1771}
1772
1773static void
1774slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1775{
1776 frame->prepare = prepare_cede_notself;
1777 frame->check = slf_check_nop;
1778}
1779
1780/*
1781 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same
1783 * stack offset
1784 * SLF stands for "schedule-like-function".
1785 */
1786static OP *
1787pp_slf (pTHX)
1788{
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790
1791 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare))
1795 {
1796 /* first iteration */
1797 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */
1800 SV *gv = *sp;
1801
1802 /* do a quick consistency check on the "function" object, and if it isn't */
1803 /* for us, divert to the real entersub */
1804 if (SvTYPE (gv) != SVt_PVGV
1805 || !GvCV (gv)
1806 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1807 return PL_ppaddr[OP_ENTERSUB](aTHX);
1808
1809 if (!(PL_op->op_flags & OPf_STACKED))
1810 {
1811 /* ampersand-form of call, use @_ instead of stack */
1812 AV *av = GvAV (PL_defgv);
1813 arg = AvARRAY (av);
1814 items = AvFILLp (av) + 1;
1815 }
1816
1817 /* now call the init function, which needs to set up slf_frame */
1818 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1819 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1820
1821 /* pop args */
1822 SP = PL_stack_base + POPMARK;
1823
1824 PUTBACK;
1825 }
1826
1827 /* now that we have a slf_frame, interpret it! */
1828 /* we use a callback system not to make the code needlessly */
1829 /* complicated, but so we can run multiple perl coros from one cctx */
1830
1831 do
1832 {
1833 struct coro_transfer_args ta;
1834
1835 slf_frame.prepare (aTHX_ &ta);
1836 TRANSFER (ta, 0);
1837
1838 checkmark = PL_stack_sp - PL_stack_base;
1839 }
1840 while (slf_frame.check (aTHX_ &slf_frame));
1841
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843
1844 /* exception handling */
1845 if (expect_false (CORO_THROW))
1846 {
1847 SV *exception = sv_2mortal (CORO_THROW);
1848
1849 CORO_THROW = 0;
1850 sv_setsv (ERRSV, exception);
1851 croak (0);
1852 }
1853
1854 /* return value handling - mostly like entersub */
1855 /* make sure we put something on the stack in scalar context */
1856 if (GIMME_V == G_SCALAR)
1857 {
1858 dSP;
1859 SV **bot = PL_stack_base + checkmark;
1860
1861 if (sp == bot) /* too few, push undef */
1862 bot [1] = &PL_sv_undef;
1863 else if (sp != bot + 1) /* too many, take last one */
1864 bot [1] = *sp;
1865
1866 SP = bot + 1;
1867
1868 PUTBACK;
1869 }
1870
1871 return NORMAL;
1872}
1873
1874static void
1875api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1876{
1877 int i;
1878 SV **arg = PL_stack_base + ax;
1879 int items = PL_stack_sp - arg + 1;
1880
1881 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1882
1883 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1884 && PL_op->op_ppaddr != pp_slf)
1885 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1886
1887 CvFLAGS (cv) |= CVf_SLF;
1888 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1889 slf_cv = cv;
1890
1891 /* we patch the op, and then re-run the whole call */
1892 /* we have to put the same argument on the stack for this to work */
1893 /* and this will be done by pp_restore */
1894 slf_restore.op_next = (OP *)&slf_restore;
1895 slf_restore.op_type = OP_CUSTOM;
1896 slf_restore.op_ppaddr = pp_restore;
1897 slf_restore.op_first = PL_op;
1898
1899 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1900
1901 if (PL_op->op_flags & OPf_STACKED)
1902 {
1903 if (items > slf_arga)
1904 {
1905 slf_arga = items;
1906 free (slf_argv);
1907 slf_argv = malloc (slf_arga * sizeof (SV *));
1908 }
1909
1910 slf_argc = items;
1911
1912 for (i = 0; i < items; ++i)
1913 slf_argv [i] = SvREFCNT_inc (arg [i]);
1914 }
1915 else
1916 slf_argc = 0;
1917
1918 PL_op->op_ppaddr = pp_slf;
1919 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1920
1921 PL_op = (OP *)&slf_restore;
1922}
1923
1924/*****************************************************************************/
1925/* PerlIO::cede */
1926
1927typedef struct
1928{
1929 PerlIOBuf base;
1930 NV next, every;
1931} PerlIOCede;
1932
1933static IV
1934PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1935{
1936 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1937
1938 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1939 self->next = nvtime () + self->every;
1940
1941 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1942}
1943
1944static SV *
1945PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1946{
1947 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1948
1949 return newSVnv (self->every);
1950}
1951
1952static IV
1953PerlIOCede_flush (pTHX_ PerlIO *f)
1954{
1955 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1956 double now = nvtime ();
1957
1958 if (now >= self->next)
1959 {
1960 api_cede (aTHX);
1961 self->next = now + self->every;
1962 }
1963
1964 return PerlIOBuf_flush (aTHX_ f);
1965}
1966
1967static PerlIO_funcs PerlIO_cede =
1968{
1969 sizeof(PerlIO_funcs),
1970 "cede",
1971 sizeof(PerlIOCede),
1972 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1973 PerlIOCede_pushed,
1974 PerlIOBuf_popped,
1975 PerlIOBuf_open,
1976 PerlIOBase_binmode,
1977 PerlIOCede_getarg,
1978 PerlIOBase_fileno,
1979 PerlIOBuf_dup,
1980 PerlIOBuf_read,
1981 PerlIOBuf_unread,
1982 PerlIOBuf_write,
1983 PerlIOBuf_seek,
1984 PerlIOBuf_tell,
1985 PerlIOBuf_close,
1986 PerlIOCede_flush,
1987 PerlIOBuf_fill,
1988 PerlIOBase_eof,
1989 PerlIOBase_error,
1990 PerlIOBase_clearerr,
1991 PerlIOBase_setlinebuf,
1992 PerlIOBuf_get_base,
1993 PerlIOBuf_bufsiz,
1994 PerlIOBuf_get_ptr,
1995 PerlIOBuf_get_cnt,
1996 PerlIOBuf_set_ptrcnt,
1997};
1998
1999/*****************************************************************************/
2000/* Coro::Semaphore */
2001
2002static SV *
2003coro_semaphore_new (int count)
2004{
2005 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2006 AV *av = newAV ();
2007 SV **ary;
2008
2009 /* unfortunately, building manually saves memory */
2010 Newx (ary, 2, SV *);
2011 AvALLOC (av) = ary;
2012 AvARRAY (av) = ary;
2013 AvMAX (av) = 1;
2014 AvFILLp (av) = 0;
2015 ary [0] = newSViv (count);
2016
2017 return newRV_noinc ((SV *)av);
2018}
2019
2020static void
2021coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2022{
2023 SV *count_sv = AvARRAY (av)[0];
2024 IV count = SvIVX (count_sv);
2025
2026 count += adjust;
2027 SvIVX (count_sv) = count;
2028
2029 /* now wake up as many waiters as are expected to lock */
2030 while (count > 0 && AvFILLp (av) > 0)
2031 {
2032 SV *cb;
2033
2034 /* swap first two elements so we can shift a waiter */
2035 AvARRAY (av)[0] = AvARRAY (av)[1];
2036 AvARRAY (av)[1] = count_sv;
2037 cb = av_shift (av);
2038
2039 if (SvOBJECT (cb))
2040 api_ready (aTHX_ cb);
2041 else
2042 croak ("callbacks not yet supported");
2043
2044 SvREFCNT_dec (cb);
2045
2046 --count;
2047 }
2048}
2049
2050static void
2051coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2052{
2053 /* call $sem->adjust (0) to possibly wake up some other waiters */
2054 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2055}
2056
2057static int
2058slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2059{
2060 AV *av = (AV *)frame->data;
2061 SV *count_sv = AvARRAY (av)[0];
2062
2063 /* if we are about to throw, don't actually acquire the lock, just throw */
2064 if (CORO_THROW)
2065 return 0;
2066 else if (SvIVX (count_sv) > 0)
2067 {
2068 SvSTATE_current->on_destroy = 0;
2069
2070 if (acquire)
2071 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2072 else
2073 coro_semaphore_adjust (aTHX_ av, 0);
2074
2075 return 0;
2076 }
2077 else
2078 {
2079 int i;
2080 /* if we were woken up but can't down, we look through the whole */
2081 /* waiters list and only add us if we aren't in there already */
2082 /* this avoids some degenerate memory usage cases */
2083
2084 for (i = 1; i <= AvFILLp (av); ++i)
2085 if (AvARRAY (av)[i] == SvRV (coro_current))
2086 return 1;
2087
2088 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2089 return 1;
2090 }
2091}
2092
2093static int
2094slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2095{
2096 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2097}
2098
2099static int
2100slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2101{
2102 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2103}
2104
2105static void
2106slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2107{
2108 AV *av = (AV *)SvRV (arg [0]);
2109
2110 if (SvIVX (AvARRAY (av)[0]) > 0)
2111 {
2112 frame->data = (void *)av;
2113 frame->prepare = prepare_nop;
2114 }
2115 else
2116 {
2117 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2118
2119 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2120 frame->prepare = prepare_schedule;
2121
2122 /* to avoid race conditions when a woken-up coro gets terminated */
2123 /* we arrange for a temporary on_destroy that calls adjust (0) */
2124 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2125 }
2126}
2127
2128static void
2129slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2130{
2131 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2132 frame->check = slf_check_semaphore_down;
2133}
2134
2135static void
2136slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2137{
2138 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2139 frame->check = slf_check_semaphore_wait;
2140}
2141
2142/*****************************************************************************/
2143/* gensub: simple closure generation utility */
2144
2145#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2146
2147/* create a closure from XS, returns a code reference */
2148/* the arg can be accessed via GENSUB_ARG from the callback */
2149/* the callback must use dXSARGS/XSRETURN */
2150static SV *
2151gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2152{
2153 CV *cv = (CV *)newSV (0);
2154
2155 sv_upgrade ((SV *)cv, SVt_PVCV);
2156
2157 CvANON_on (cv);
2158 CvISXSUB_on (cv);
2159 CvXSUB (cv) = xsub;
2160 GENSUB_ARG = arg;
2161
2162 return newRV_noinc ((SV *)cv);
2163}
2164
2165/*****************************************************************************/
2166/* Coro::AIO */
2167
2168#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2169
2170/* helper storage struct */
2171struct io_state
2172{
2173 int errorno;
2174 I32 laststype; /* U16 in 5.10.0 */
2175 int laststatval;
2176 Stat_t statcache;
2177};
2178
2179static void
2180coro_aio_callback (pTHX_ CV *cv)
2181{
2182 dXSARGS;
2183 AV *state = (AV *)GENSUB_ARG;
2184 SV *coro = av_pop (state);
2185 SV *data_sv = newSV (sizeof (struct io_state));
2186
2187 av_extend (state, items);
2188
2189 sv_upgrade (data_sv, SVt_PV);
2190 SvCUR_set (data_sv, sizeof (struct io_state));
2191 SvPOK_only (data_sv);
2192
2193 {
2194 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2195
2196 data->errorno = errno;
2197 data->laststype = PL_laststype;
2198 data->laststatval = PL_laststatval;
2199 data->statcache = PL_statcache;
2200 }
2201
2202 /* now build the result vector out of all the parameters and the data_sv */
2203 {
2204 int i;
2205
2206 for (i = 0; i < items; ++i)
2207 av_push (state, SvREFCNT_inc_NN (ST (i)));
2208 }
2209
2210 av_push (state, data_sv);
2211
2212 api_ready (aTHX_ coro);
2213 SvREFCNT_dec (coro);
2214 SvREFCNT_dec ((AV *)state);
2215}
2216
2217static int
2218slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2219{
2220 AV *state = (AV *)frame->data;
2221
2222 /* if we are about to throw, return early */
2223 /* this does not cancel the aio request, but at least */
2224 /* it quickly returns */
2225 if (CORO_THROW)
2226 return 0;
2227
2228 /* one element that is an RV? repeat! */
2229 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2230 return 1;
2231
2232 /* restore status */
2233 {
2234 SV *data_sv = av_pop (state);
2235 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2236
2237 errno = data->errorno;
2238 PL_laststype = data->laststype;
2239 PL_laststatval = data->laststatval;
2240 PL_statcache = data->statcache;
2241
2242 SvREFCNT_dec (data_sv);
2243 }
2244
2245 /* push result values */
2246 {
2247 dSP;
2248 int i;
2249
2250 EXTEND (SP, AvFILLp (state) + 1);
2251 for (i = 0; i <= AvFILLp (state); ++i)
2252 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2253
2254 PUTBACK;
2255 }
2256
2257 return 0;
2258}
2259
2260static void
2261slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2262{
2263 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2264 SV *coro_hv = SvRV (coro_current);
2265 struct coro *coro = SvSTATE_hv (coro_hv);
2266
2267 /* put our coroutine id on the state arg */
2268 av_push (state, SvREFCNT_inc_NN (coro_hv));
2269
2270 /* first see whether we have a non-zero priority and set it as AIO prio */
2271 if (coro->prio)
2272 {
2273 dSP;
2274
2275 static SV *prio_cv;
2276 static SV *prio_sv;
2277
2278 if (expect_false (!prio_cv))
2279 {
2280 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2281 prio_sv = newSViv (0);
2282 }
2283
2284 PUSHMARK (SP);
2285 sv_setiv (prio_sv, coro->prio);
2286 XPUSHs (prio_sv);
2287
2288 PUTBACK;
2289 call_sv (prio_cv, G_VOID | G_DISCARD);
2290 }
2291
2292 /* now call the original request */
2293 {
2294 dSP;
2295 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2296 int i;
2297
2298 PUSHMARK (SP);
2299
2300 /* first push all args to the stack */
2301 EXTEND (SP, items + 1);
2302
2303 for (i = 0; i < items; ++i)
2304 PUSHs (arg [i]);
2305
2306 /* now push the callback closure */
2307 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2308
2309 /* now call the AIO function - we assume our request is uncancelable */
2310 PUTBACK;
2311 call_sv ((SV *)req, G_VOID | G_DISCARD);
2312 }
2313
2314 /* now that the requets is going, we loop toll we have a result */
2315 frame->data = (void *)state;
2316 frame->prepare = prepare_schedule;
2317 frame->check = slf_check_aio_req;
2318}
2319
2320static void
2321coro_aio_req_xs (pTHX_ CV *cv)
2322{
2323 dXSARGS;
2324
2325 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2326
2327 XSRETURN_EMPTY;
2328}
2329
2330/*****************************************************************************/
2331
1596MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2332MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1597 2333
1598PROTOTYPES: DISABLE 2334PROTOTYPES: DISABLE
1599 2335
1600BOOT: 2336BOOT:
1601{ 2337{
1602#ifdef USE_ITHREADS 2338#ifdef USE_ITHREADS
1603 MUTEX_INIT (&coro_mutex); 2339# if CORO_PTHREAD
2340 coro_thx = PERL_GET_CONTEXT;
2341# endif
1604#endif 2342#endif
1605 BOOT_PAGESIZE; 2343 BOOT_PAGESIZE;
1606 2344
1607 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2345 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1608 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2346 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1609 2347
1610 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2348 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1611 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2349 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1612 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2350 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1613 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1614 2351
1615 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2352 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1616 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2353 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1617 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2354 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1618 2355
… …
1627 main_top_env = PL_top_env; 2364 main_top_env = PL_top_env;
1628 2365
1629 while (main_top_env->je_prev) 2366 while (main_top_env->je_prev)
1630 main_top_env = main_top_env->je_prev; 2367 main_top_env = main_top_env->je_prev;
1631 2368
2369 {
2370 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2371
2372 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2373 hv_store_ent (PL_custom_op_names, slf,
2374 newSVpv ("coro_slf", 0), 0);
2375
2376 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2377 hv_store_ent (PL_custom_op_descs, slf,
2378 newSVpv ("coro schedule like function", 0), 0);
2379 }
2380
1632 coroapi.ver = CORO_API_VERSION; 2381 coroapi.ver = CORO_API_VERSION;
1633 coroapi.rev = CORO_API_REVISION; 2382 coroapi.rev = CORO_API_REVISION;
2383
1634 coroapi.transfer = api_transfer; 2384 coroapi.transfer = api_transfer;
2385
2386 coroapi.sv_state = SvSTATE_;
2387 coroapi.execute_slf = api_execute_slf;
2388 coroapi.prepare_nop = prepare_nop;
2389 coroapi.prepare_schedule = prepare_schedule;
2390 coroapi.prepare_cede = prepare_cede;
2391 coroapi.prepare_cede_notself = prepare_cede_notself;
2392
2393 {
2394 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2395
2396 if (!svp) croak ("Time::HiRes is required");
2397 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2398
2399 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2400 }
1635 2401
1636 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2402 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1637} 2403}
1638 2404
1639SV * 2405SV *
… …
1663 av_push (coro->args, newSVsv (ST (i))); 2429 av_push (coro->args, newSVsv (ST (i)));
1664} 2430}
1665 OUTPUT: 2431 OUTPUT:
1666 RETVAL 2432 RETVAL
1667 2433
1668# these not obviously related functions are all rolled into the same xs
1669# function to increase chances that they all will call transfer with the same
1670# stack offset
1671void 2434void
1672_set_stacklevel (...) 2435transfer (...)
1673 ALIAS: 2436 PROTOTYPE: $$
1674 Coro::State::transfer = 1 2437 CODE:
1675 Coro::schedule = 2 2438 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1676 Coro::cede = 3
1677 Coro::cede_notself = 4
1678 CODE:
1679{
1680 struct transfer_args ta;
1681
1682 PUTBACK;
1683 switch (ix)
1684 {
1685 case 0:
1686 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1687 ta.next = 0;
1688 break;
1689
1690 case 1:
1691 if (items != 2)
1692 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1693
1694 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1695 break;
1696
1697 case 2:
1698 prepare_schedule (aTHX_ &ta);
1699 break;
1700
1701 case 3:
1702 prepare_cede (aTHX_ &ta);
1703 break;
1704
1705 case 4:
1706 if (!prepare_cede_notself (aTHX_ &ta))
1707 XSRETURN_EMPTY;
1708
1709 break;
1710 }
1711 SPAGAIN;
1712
1713 BARRIER;
1714 PUTBACK;
1715 TRANSFER (ta, 0);
1716 SPAGAIN; /* might be the sp of a different coroutine now */
1717 /* be extra careful not to ever do anything after TRANSFER */
1718}
1719 2439
1720bool 2440bool
1721_destroy (SV *coro_sv) 2441_destroy (SV *coro_sv)
1722 CODE: 2442 CODE:
1723 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2443 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1730 CODE: 2450 CODE:
1731 _exit (code); 2451 _exit (code);
1732 2452
1733int 2453int
1734cctx_stacksize (int new_stacksize = 0) 2454cctx_stacksize (int new_stacksize = 0)
2455 PROTOTYPE: ;$
1735 CODE: 2456 CODE:
1736 RETVAL = coro_stacksize; 2457 RETVAL = cctx_stacksize;
1737 if (new_stacksize) 2458 if (new_stacksize)
2459 {
1738 coro_stacksize = new_stacksize; 2460 cctx_stacksize = new_stacksize;
2461 ++cctx_gen;
2462 }
1739 OUTPUT: 2463 OUTPUT:
1740 RETVAL 2464 RETVAL
1741 2465
1742int 2466int
2467cctx_max_idle (int max_idle = 0)
2468 PROTOTYPE: ;$
2469 CODE:
2470 RETVAL = cctx_max_idle;
2471 if (max_idle > 1)
2472 cctx_max_idle = max_idle;
2473 OUTPUT:
2474 RETVAL
2475
2476int
1743cctx_count () 2477cctx_count ()
2478 PROTOTYPE:
1744 CODE: 2479 CODE:
1745 RETVAL = cctx_count; 2480 RETVAL = cctx_count;
1746 OUTPUT: 2481 OUTPUT:
1747 RETVAL 2482 RETVAL
1748 2483
1749int 2484int
1750cctx_idle () 2485cctx_idle ()
2486 PROTOTYPE:
1751 CODE: 2487 CODE:
1752 RETVAL = cctx_idle; 2488 RETVAL = cctx_idle;
1753 OUTPUT: 2489 OUTPUT:
1754 RETVAL 2490 RETVAL
1755 2491
1756void 2492void
1757list () 2493list ()
2494 PROTOTYPE:
1758 PPCODE: 2495 PPCODE:
1759{ 2496{
1760 struct coro *coro; 2497 struct coro *coro;
1761 for (coro = coro_first; coro; coro = coro->next) 2498 for (coro = coro_first; coro; coro = coro->next)
1762 if (coro->hv) 2499 if (coro->hv)
… …
1767call (Coro::State coro, SV *coderef) 2504call (Coro::State coro, SV *coderef)
1768 ALIAS: 2505 ALIAS:
1769 eval = 1 2506 eval = 1
1770 CODE: 2507 CODE:
1771{ 2508{
1772 if (coro->mainstack) 2509 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1773 { 2510 {
1774 struct coro temp; 2511 struct coro temp;
1775 2512
1776 if (!(coro->flags & CF_RUNNING)) 2513 if (!(coro->flags & CF_RUNNING))
1777 { 2514 {
… …
1821 RETVAL = boolSV (coro->flags & ix); 2558 RETVAL = boolSV (coro->flags & ix);
1822 OUTPUT: 2559 OUTPUT:
1823 RETVAL 2560 RETVAL
1824 2561
1825void 2562void
2563throw (Coro::State self, SV *throw = &PL_sv_undef)
2564 PROTOTYPE: $;$
2565 CODE:
2566{
2567 struct coro *current = SvSTATE_current;
2568 SV **throwp = self == current ? &CORO_THROW : &self->except;
2569 SvREFCNT_dec (*throwp);
2570 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2571}
2572
2573void
1826api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2574api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2575 PROTOTYPE: $;$
2576 C_ARGS: aTHX_ coro, flags
1827 2577
1828SV * 2578SV *
1829has_cctx (Coro::State coro) 2579has_cctx (Coro::State coro)
1830 PROTOTYPE: $ 2580 PROTOTYPE: $
1831 CODE: 2581 CODE:
… …
1839 CODE: 2589 CODE:
1840 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2590 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1841 OUTPUT: 2591 OUTPUT:
1842 RETVAL 2592 RETVAL
1843 2593
1844IV 2594UV
1845rss (Coro::State coro) 2595rss (Coro::State coro)
1846 PROTOTYPE: $ 2596 PROTOTYPE: $
1847 ALIAS: 2597 ALIAS:
1848 usecount = 1 2598 usecount = 1
1849 CODE: 2599 CODE:
… …
1855 OUTPUT: 2605 OUTPUT:
1856 RETVAL 2606 RETVAL
1857 2607
1858void 2608void
1859force_cctx () 2609force_cctx ()
2610 PROTOTYPE:
1860 CODE: 2611 CODE:
1861 struct coro *coro = SvSTATE (coro_current);
1862 coro->cctx->idle_sp = 0; 2612 SvSTATE_current->cctx->idle_sp = 0;
2613
2614void
2615swap_defsv (Coro::State self)
2616 PROTOTYPE: $
2617 ALIAS:
2618 swap_defav = 1
2619 CODE:
2620 if (!self->slot)
2621 croak ("cannot swap state with coroutine that has no saved state,");
2622 else
2623 {
2624 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2625 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2626
2627 SV *tmp = *src; *src = *dst; *dst = tmp;
2628 }
2629
1863 2630
1864MODULE = Coro::State PACKAGE = Coro 2631MODULE = Coro::State PACKAGE = Coro
1865 2632
1866BOOT: 2633BOOT:
1867{ 2634{
… …
1885 2652
1886 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2653 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1887 coro_ready[i] = newAV (); 2654 coro_ready[i] = newAV ();
1888 2655
1889 { 2656 {
1890 SV *sv = perl_get_sv ("Coro::API", TRUE); 2657 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1891 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1892 2658
1893 coroapi.schedule = api_schedule; 2659 coroapi.schedule = api_schedule;
1894 coroapi.cede = api_cede; 2660 coroapi.cede = api_cede;
1895 coroapi.cede_notself = api_cede_notself; 2661 coroapi.cede_notself = api_cede_notself;
1896 coroapi.ready = api_ready; 2662 coroapi.ready = api_ready;
1897 coroapi.is_ready = api_is_ready; 2663 coroapi.is_ready = api_is_ready;
1898 coroapi.nready = &coro_nready; 2664 coroapi.nready = coro_nready;
1899 coroapi.current = coro_current; 2665 coroapi.current = coro_current;
1900 2666
1901 GCoroAPI = &coroapi; 2667 /*GCoroAPI = &coroapi;*/
1902 sv_setiv (sv, (IV)&coroapi); 2668 sv_setiv (sv, (IV)&coroapi);
1903 SvREADONLY_on (sv); 2669 SvREADONLY_on (sv);
1904 } 2670 }
1905} 2671}
2672
2673void
2674schedule (...)
2675 CODE:
2676 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2677
2678void
2679cede (...)
2680 CODE:
2681 CORO_EXECUTE_SLF_XS (slf_init_cede);
2682
2683void
2684cede_notself (...)
2685 CODE:
2686 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1906 2687
1907void 2688void
1908_set_current (SV *current) 2689_set_current (SV *current)
1909 PROTOTYPE: $ 2690 PROTOTYPE: $
1910 CODE: 2691 CODE:
1911 SvREFCNT_dec (SvRV (coro_current)); 2692 SvREFCNT_dec (SvRV (coro_current));
1912 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2693 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1913 2694
1914void 2695void
1915_set_readyhook (SV *hook) 2696_set_readyhook (SV *hook)
1916 PROTOTYPE: $ 2697 PROTOTYPE: $
1917 CODE: 2698 CODE:
1918 LOCK;
1919 SvREFCNT_dec (coro_readyhook); 2699 SvREFCNT_dec (coro_readyhook);
1920 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2700 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1921 UNLOCK;
1922 2701
1923int 2702int
1924prio (Coro::State coro, int newprio = 0) 2703prio (Coro::State coro, int newprio = 0)
2704 PROTOTYPE: $;$
1925 ALIAS: 2705 ALIAS:
1926 nice = 1 2706 nice = 1
1927 CODE: 2707 CODE:
1928{ 2708{
1929 RETVAL = coro->prio; 2709 RETVAL = coro->prio;
… …
1944 2724
1945SV * 2725SV *
1946ready (SV *self) 2726ready (SV *self)
1947 PROTOTYPE: $ 2727 PROTOTYPE: $
1948 CODE: 2728 CODE:
1949 RETVAL = boolSV (api_ready (self)); 2729 RETVAL = boolSV (api_ready (aTHX_ self));
1950 OUTPUT: 2730 OUTPUT:
1951 RETVAL 2731 RETVAL
1952 2732
1953int 2733int
1954nready (...) 2734nready (...)
… …
1956 CODE: 2736 CODE:
1957 RETVAL = coro_nready; 2737 RETVAL = coro_nready;
1958 OUTPUT: 2738 OUTPUT:
1959 RETVAL 2739 RETVAL
1960 2740
1961void
1962throw (Coro::State self, SV *throw = &PL_sv_undef)
1963 PROTOTYPE: $;$
1964 CODE:
1965 SvREFCNT_dec (self->throw);
1966 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1967
1968void
1969swap_defsv (Coro::State self)
1970 PROTOTYPE: $
1971 ALIAS:
1972 swap_defav = 1
1973 CODE:
1974 if (!self->slot)
1975 croak ("cannot swap state with coroutine that has no saved state");
1976 else
1977 {
1978 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1979 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1980
1981 SV *tmp = *src; *src = *dst; *dst = tmp;
1982 }
1983
1984# for async_pool speedup 2741# for async_pool speedup
1985void 2742void
1986_pool_1 (SV *cb) 2743_pool_1 (SV *cb)
1987 CODE: 2744 CODE:
1988{ 2745{
1989 struct coro *coro = SvSTATE (coro_current);
1990 HV *hv = (HV *)SvRV (coro_current); 2746 HV *hv = (HV *)SvRV (coro_current);
2747 struct coro *coro = SvSTATE_hv ((SV *)hv);
1991 AV *defav = GvAV (PL_defgv); 2748 AV *defav = GvAV (PL_defgv);
1992 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2749 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1993 AV *invoke_av; 2750 AV *invoke_av;
1994 int i, len; 2751 int i, len;
1995 2752
1996 if (!invoke) 2753 if (!invoke)
1997 { 2754 {
1998 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2755 SV *old = PL_diehook;
2756 PL_diehook = 0;
2757 SvREFCNT_dec (old);
1999 croak ("\3async_pool terminate\2\n"); 2758 croak ("\3async_pool terminate\2\n");
2000 } 2759 }
2001 2760
2002 SvREFCNT_dec (coro->saved_deffh); 2761 SvREFCNT_dec (coro->saved_deffh);
2003 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2762 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2004 2763
2005 hv_store (hv, "desc", sizeof ("desc") - 1, 2764 hv_store (hv, "desc", sizeof ("desc") - 1,
2006 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2765 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2007 2766
2008 invoke_av = (AV *)SvRV (invoke); 2767 invoke_av = (AV *)SvRV (invoke);
… …
2012 2771
2013 if (len > 0) 2772 if (len > 0)
2014 { 2773 {
2015 av_fill (defav, len - 1); 2774 av_fill (defav, len - 1);
2016 for (i = 0; i < len; ++i) 2775 for (i = 0; i < len; ++i)
2017 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2776 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2018 } 2777 }
2019
2020 SvREFCNT_dec (invoke);
2021} 2778}
2022 2779
2023void 2780void
2024_pool_2 (SV *cb) 2781_pool_2 (SV *cb)
2025 CODE: 2782 CODE:
2026{ 2783{
2027 struct coro *coro = SvSTATE (coro_current); 2784 HV *hv = (HV *)SvRV (coro_current);
2785 struct coro *coro = SvSTATE_hv ((SV *)hv);
2028 2786
2029 sv_setsv (cb, &PL_sv_undef); 2787 sv_setsv (cb, &PL_sv_undef);
2030 2788
2031 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2789 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2032 coro->saved_deffh = 0; 2790 coro->saved_deffh = 0;
2033 2791
2034 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2792 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2035 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2793 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2036 { 2794 {
2037 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2795 SV *old = PL_diehook;
2796 PL_diehook = 0;
2797 SvREFCNT_dec (old);
2038 croak ("\3async_pool terminate\2\n"); 2798 croak ("\3async_pool terminate\2\n");
2039 } 2799 }
2040 2800
2041 av_clear (GvAV (PL_defgv)); 2801 av_clear (GvAV (PL_defgv));
2042 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2802 hv_store (hv, "desc", sizeof ("desc") - 1,
2043 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2803 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2044 2804
2045 coro->prio = 0; 2805 coro->prio = 0;
2046 2806
2047 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2807 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2048 api_trace (coro_current, 0); 2808 api_trace (aTHX_ coro_current, 0);
2049 2809
2050 av_push (av_async_pool, newSVsv (coro_current)); 2810 av_push (av_async_pool, newSVsv (coro_current));
2051} 2811}
2052 2812
2053 2813
2814MODULE = Coro::State PACKAGE = PerlIO::cede
2815
2816BOOT:
2817 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2818
2819
2054MODULE = Coro::State PACKAGE = Coro::AIO 2820MODULE = Coro::State PACKAGE = Coro::Semaphore
2055 2821
2056SV * 2822SV *
2057_get_state () 2823new (SV *klass, SV *count = 0)
2058 CODE: 2824 CODE:
2059{ 2825 RETVAL = sv_bless (
2060 struct io_state *data; 2826 coro_semaphore_new (count && SvOK (count) ? SvIV (count) : 1),
2061 2827 GvSTASH (CvGV (cv))
2062 RETVAL = newSV (sizeof (struct io_state)); 2828 );
2063 data = (struct io_state *)SvPVX (RETVAL);
2064 SvCUR_set (RETVAL, sizeof (struct io_state));
2065 SvPOK_only (RETVAL);
2066
2067 data->errorno = errno;
2068 data->laststype = PL_laststype;
2069 data->laststatval = PL_laststatval;
2070 data->statcache = PL_statcache;
2071}
2072 OUTPUT: 2829 OUTPUT:
2073 RETVAL 2830 RETVAL
2074 2831
2832# helper for Coro::Channel
2833SV *
2834_alloc (int count)
2835 CODE:
2836 RETVAL = coro_semaphore_new (count);
2837 OUTPUT:
2838 RETVAL
2839
2840SV *
2841count (SV *self)
2842 CODE:
2843 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2844 OUTPUT:
2845 RETVAL
2846
2075void 2847void
2076_set_state (char *data_) 2848up (SV *self, int adjust = 1)
2077 PROTOTYPE: $ 2849 ALIAS:
2850 adjust = 1
2851 CODE:
2852 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2853
2854void
2855down (SV *self)
2856 ALIAS:
2857 Coro::Signal::wait = 0
2858 CODE:
2859 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2860
2861void
2862wait (SV *self)
2863 CODE:
2864 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2865
2866void
2867try (SV *self)
2868 PPCODE:
2869{
2870 AV *av = (AV *)SvRV (self);
2871 SV *count_sv = AvARRAY (av)[0];
2872 IV count = SvIVX (count_sv);
2873
2874 if (count > 0)
2875 {
2876 --count;
2877 SvIVX (count_sv) = count;
2878 XSRETURN_YES;
2879 }
2880 else
2881 XSRETURN_NO;
2882}
2883
2884void
2885waiters (SV *self)
2886 PPCODE:
2887{
2888 AV *av = (AV *)SvRV (self);
2889 int wcount = AvFILLp (av) + 1 - 1;
2890
2891 if (GIMME_V == G_SCALAR)
2892 XPUSHs (sv_2mortal (newSViv (wcount)));
2893 else
2894 {
2895 int i;
2896 EXTEND (SP, wcount);
2897 for (i = 1; i <= wcount; ++i)
2898 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2899 }
2900}
2901
2902MODULE = Coro::State PACKAGE = Coro::Signal
2903
2904SV *
2905new (SV *klass)
2078 CODE: 2906 CODE:
2079{ 2907 RETVAL = sv_bless (
2080 struct io_state *data = (void *)data_; 2908 coro_semaphore_new (0),
2909 GvSTASH (CvGV (cv))
2910 );
2911 OUTPUT:
2912 RETVAL
2081 2913
2082 errno = data->errorno; 2914void
2083 PL_laststype = data->laststype; 2915broadcast (SV *self, int adjust = 1)
2084 PL_laststatval = data->laststatval; 2916 CODE:
2085 PL_statcache = data->statcache; 2917{
2918 AV *av = (AV *)SvRV (self);
2919 SvIVX (AvARRAY (av)[0]) = 0; /* not necessary, but gives me fuzzy warm feelings */
2920 coro_semaphore_adjust (aTHX_ av, AvFILLp (av) + 1 - 1);
2921 SvIVX (AvARRAY (av)[0]) = 0; /* necessary */
2086} 2922}
2087 2923
2088 2924
2089MODULE = Coro::State PACKAGE = Coro::AnyEvent 2925MODULE = Coro::State PACKAGE = Coro::AnyEvent
2090 2926
2091BOOT: 2927BOOT:
2092 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2928 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2093 2929
2094SV * 2930void
2095_schedule (...) 2931_schedule (...)
2096 PROTOTYPE: @
2097 CODE: 2932 CODE:
2098{ 2933{
2099 static int incede; 2934 static int incede;
2100 2935
2101 api_cede_notself (); 2936 api_cede_notself (aTHX);
2102 2937
2103 ++incede; 2938 ++incede;
2104 while (coro_nready >= incede && api_cede ()) 2939 while (coro_nready >= incede && api_cede (aTHX))
2105 ; 2940 ;
2106 2941
2107 sv_setsv (sv_activity, &PL_sv_undef); 2942 sv_setsv (sv_activity, &PL_sv_undef);
2108 if (coro_nready >= incede) 2943 if (coro_nready >= incede)
2109 { 2944 {
2110 PUSHMARK (SP); 2945 PUSHMARK (SP);
2111 PUTBACK; 2946 PUTBACK;
2112 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 2947 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2113 SPAGAIN;
2114 } 2948 }
2115 2949
2116 --incede; 2950 --incede;
2117} 2951}
2118 2952
2953
2954MODULE = Coro::State PACKAGE = Coro::AIO
2955
2956void
2957_register (char *target, char *proto, SV *req)
2958 CODE:
2959{
2960 HV *st;
2961 GV *gvp;
2962 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2963 /* newXSproto doesn't return the CV on 5.8 */
2964 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2965 sv_setpv ((SV *)slf_cv, proto);
2966 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2967}
2968

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