ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.231 by root, Thu Apr 24 10:31:59 2008 UTC vs.
Revision 1.280 by root, Sun Nov 16 09:43:18 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>
… …
15 16
16#ifdef WIN32 17#ifdef WIN32
17# undef setjmp 18# undef setjmp
18# undef longjmp 19# undef longjmp
19# undef _exit 20# undef _exit
20#include <setjmp.h> 21# define setjmp _setjmp // deep magic, don't ask
21#else 22#else
22# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
23#endif 24#endif
24 25
25#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
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
93/* 5.11 */
94#ifndef CxHASARGS
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96#endif
97
98/* 5.8.7 */ 101/* 5.8.7 */
99#ifndef SvRV_set 102#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
101#endif 104#endif
102 105
… …
113# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif 117#endif
115 118
116/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
117 * portable way as possible. */ 120 * portable way as possible. */
118#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
119#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
120 126
121#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
122 128
123#if __GNUC__ >= 3 129#if __GNUC__ >= 3
124# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
127#else 133#else
128# define attribute(x) 134# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
131#endif 137#endif
132 138
133#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
135 141
136#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
137 143
138#include "CoroAPI.h" 144#include "CoroAPI.h"
139 145
140#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
141static perl_mutex coro_mutex; 147# if CORO_PTHREAD
142# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
143# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# endif
144#else
145# define LOCK (void)0
146# define UNLOCK (void)0
147#endif 150#endif
148 151
149/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
150struct io_state 153struct io_state
151{ 154{
155 AV *res;
152 int errorno; 156 int errorno;
153 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
154 int laststatval; 158 int laststatval;
155 Stat_t statcache; 159 Stat_t statcache;
156}; 160};
157 161
162static double (*nvtime)(); /* so why doesn't it take void? */
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 */
171static volatile struct coro *transfer_next;
164 172
165static GV *irsgv; /* $/ */ 173static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 174static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 175static SV *rv_diehook;
168static SV *rv_warnhook; 176static SV *rv_warnhook;
… …
170 178
171/* async_pool helper stuff */ 179/* async_pool helper stuff */
172static SV *sv_pool_rss; 180static SV *sv_pool_rss;
173static SV *sv_pool_size; 181static SV *sv_pool_size;
174static AV *av_async_pool; 182static AV *av_async_pool;
183
184/* Coro::AnyEvent */
185static SV *sv_activity;
175 186
176static struct coro_cctx *cctx_first; 187static struct coro_cctx *cctx_first;
177static int cctx_count, cctx_idle; 188static int cctx_count, cctx_idle;
178 189
179enum { 190enum {
… …
184 CC_TRACE_LINE = 0x10, /* trace each statement */ 195 CC_TRACE_LINE = 0x10, /* trace each statement */
185 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 196 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
186}; 197};
187 198
188/* this is a structure representing a c-level coroutine */ 199/* this is a structure representing a c-level coroutine */
189typedef struct coro_cctx { 200typedef struct coro_cctx
201{
190 struct coro_cctx *next; 202 struct coro_cctx *next;
191 203
192 /* the stack */ 204 /* the stack */
193 void *sptr; 205 void *sptr;
194 size_t ssize; 206 size_t ssize;
… …
197 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
198 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
199 JMPENV *top_env; 211 JMPENV *top_env;
200 coro_context cctx; 212 coro_context cctx;
201 213
214 U32 gen;
202#if CORO_USE_VALGRIND 215#if CORO_USE_VALGRIND
203 int valgrind_id; 216 int valgrind_id;
204#endif 217#endif
205 unsigned char flags; 218 unsigned char flags;
206} coro_cctx; 219} coro_cctx;
… …
211 CF_NEW = 0x0004, /* has never been switched to */ 224 CF_NEW = 0x0004, /* has never been switched to */
212 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
213}; 226};
214 227
215/* the structure where most of the perl state is stored, overlaid on the cxstack */ 228/* the structure where most of the perl state is stored, overlaid on the cxstack */
216typedef struct { 229typedef struct
230{
217 SV *defsv; 231 SV *defsv;
218 AV *defav; 232 AV *defav;
219 SV *errsv; 233 SV *errsv;
220 SV *irsgv; 234 SV *irsgv;
221#define VAR(name,type) type name; 235#define VAR(name,type) type name;
… …
225 239
226#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
227 241
228/* this is a structure representing a perl-level coroutine */ 242/* this is a structure representing a perl-level coroutine */
229struct coro { 243struct coro {
230 /* the c coroutine allocated to this perl coroutine, if any */ 244 /* the C coroutine allocated to this perl coroutine, if any */
231 coro_cctx *cctx; 245 coro_cctx *cctx;
232 246
233 /* process data */ 247 /* process data */
248 struct CoroSLF slf_frame; /* saved slf frame */
234 AV *mainstack; 249 AV *mainstack;
235 perl_slots *slot; /* basically the saved sp */ 250 perl_slots *slot; /* basically the saved sp */
236 251
237 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
238 int refcnt; /* coroutines are refcounted, yes */ 253 int refcnt; /* coroutines are refcounted, yes */
239 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
240 HV *hv; /* the perl hash associated with this coro, if any */ 255 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
241 257
242 /* statistics */ 258 /* statistics */
243 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
244 260
245 /* coro process data */ 261 /* coro process data */
… …
253 struct coro *next, *prev; 269 struct coro *next, *prev;
254}; 270};
255 271
256typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
257typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
274
275static struct CoroSLF slf_frame; /* the current slf frame */
258 276
259/** Coro ********************************************************************/ 277/** Coro ********************************************************************/
260 278
261#define PRIO_MAX 3 279#define PRIO_MAX 3
262#define PRIO_HIGH 1 280#define PRIO_HIGH 1
… …
265#define PRIO_IDLE -3 283#define PRIO_IDLE -3
266#define PRIO_MIN -4 284#define PRIO_MIN -4
267 285
268/* for Coro.pm */ 286/* for Coro.pm */
269static SV *coro_current; 287static SV *coro_current;
288static SV *coro_readyhook;
270static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
271static int coro_nready;
272static struct coro *coro_first; 290static struct coro *coro_first;
291#define coro_nready coroapi.nready
273 292
274/** lowlevel stuff **********************************************************/ 293/** lowlevel stuff **********************************************************/
275 294
276static SV * 295static SV *
277coro_get_sv (pTHX_ const char *name, int create) 296coro_get_sv (pTHX_ const char *name, int create)
… …
317 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
318#endif 337#endif
319 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
320 --AvFILLp (padlist); 339 --AvFILLp (padlist);
321 340
322 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
323 av_store (newpadlist, 1, (SV *)newpad); 342 av_store (newpadlist, 1, (SV *)newpad);
324 343
325 return newpadlist; 344 return newpadlist;
326} 345}
327 346
… …
357 376
358 /* casting is fun. */ 377 /* casting is fun. */
359 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
360 free_padlist (aTHX_ padlist); 379 free_padlist (aTHX_ padlist);
361 380
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382
362 return 0; 383 return 0;
363} 384}
364 385
365#define CORO_MAGIC_type_cv PERL_MAGIC_ext 386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
366#define CORO_MAGIC_type_state PERL_MAGIC_ext 387#define CORO_MAGIC_type_state PERL_MAGIC_ext
… …
368static MGVTBL coro_cv_vtbl = { 389static MGVTBL coro_cv_vtbl = {
369 0, 0, 0, 0, 390 0, 0, 0, 0,
370 coro_cv_free 391 coro_cv_free
371}; 392};
372 393
373#define CORO_MAGIC(sv,type) \ 394#define CORO_MAGIC(sv, type) \
374 SvMAGIC (sv) \ 395 SvMAGIC (sv) \
375 ? SvMAGIC (sv)->mg_type == type \ 396 ? SvMAGIC (sv)->mg_type == type \
376 ? SvMAGIC (sv) \ 397 ? SvMAGIC (sv) \
377 : mg_find (sv, type) \ 398 : mg_find (sv, type) \
378 : 0 399 : 0
379 400
380#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
381#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
382 403
383static struct coro * 404INLINE struct coro *
384SvSTATE_ (pTHX_ SV *coro) 405SvSTATE_ (pTHX_ SV *coro)
385{ 406{
386 HV *stash; 407 HV *stash;
387 MAGIC *mg; 408 MAGIC *mg;
388 409
… …
416 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 437 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
417 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 438 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
418 else 439 else
419 { 440 {
420#if CORO_PREFER_PERL_FUNCTIONS 441#if CORO_PREFER_PERL_FUNCTIONS
421 /* this is probably cleaner, but also slower? */ 442 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */
422 CV *cp = Perl_cv_clone (cv); 444 CV *cp = Perl_cv_clone (cv);
423 CvPADLIST (cv) = CvPADLIST (cp); 445 CvPADLIST (cv) = CvPADLIST (cp);
424 CvPADLIST (cp) = 0; 446 CvPADLIST (cp) = 0;
425 SvREFCNT_dec (cp); 447 SvREFCNT_dec (cp);
426#else 448#else
… …
478 CvPADLIST (cv) = (AV *)POPs; 500 CvPADLIST (cv) = (AV *)POPs;
479 } 501 }
480 502
481 PUTBACK; 503 PUTBACK;
482 } 504 }
505
506 slf_frame = c->slf_frame;
483} 507}
484 508
485static void 509static void
486save_perl (pTHX_ Coro__State c) 510save_perl (pTHX_ Coro__State c)
487{ 511{
512 c->slf_frame = slf_frame;
513
488 { 514 {
489 dSP; 515 dSP;
490 I32 cxix = cxstack_ix; 516 I32 cxix = cxstack_ix;
491 PERL_CONTEXT *ccstk = cxstack; 517 PERL_CONTEXT *ccstk = cxstack;
492 PERL_SI *top_si = PL_curstackinfo; 518 PERL_SI *top_si = PL_curstackinfo;
… …
510 536
511 if (expect_true (CvDEPTH (cv))) 537 if (expect_true (CvDEPTH (cv)))
512 { 538 {
513 EXTEND (SP, 3); 539 EXTEND (SP, 3);
514 PUSHs ((SV *)CvPADLIST (cv)); 540 PUSHs ((SV *)CvPADLIST (cv));
515 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 541 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
516 PUSHs ((SV *)cv); 542 PUSHs ((SV *)cv);
517 543
518 CvDEPTH (cv) = 0; 544 CvDEPTH (cv) = 0;
519 get_padlist (aTHX_ cv); 545 get_padlist (aTHX_ cv);
520 } 546 }
… …
559 #undef VAR 585 #undef VAR
560 } 586 }
561} 587}
562 588
563/* 589/*
564 * allocate various perl stacks. This is an exact copy 590 * allocate various perl stacks. This is almost an exact copy
565 * of perl.c:init_stacks, except that it uses less memory 591 * of perl.c:init_stacks, except that it uses less memory
566 * on the (sometimes correct) assumption that coroutines do 592 * on the (sometimes correct) assumption that coroutines do
567 * not usually need a lot of stackspace. 593 * not usually need a lot of stackspace.
568 */ 594 */
569#if CORO_PREFER_PERL_FUNCTIONS 595#if CORO_PREFER_PERL_FUNCTIONS
… …
612 638
613/* 639/*
614 * destroy the stacks, the callchain etc... 640 * destroy the stacks, the callchain etc...
615 */ 641 */
616static void 642static void
617coro_destroy_stacks (pTHX) 643coro_destruct_stacks (pTHX)
618{ 644{
619 while (PL_curstackinfo->si_next) 645 while (PL_curstackinfo->si_next)
620 PL_curstackinfo = PL_curstackinfo->si_next; 646 PL_curstackinfo = PL_curstackinfo->si_next;
621 647
622 while (PL_curstackinfo) 648 while (PL_curstackinfo)
… …
659 #undef VAR 685 #undef VAR
660 } 686 }
661 else 687 else
662 slot = coro->slot; 688 slot = coro->slot;
663 689
690 if (slot)
691 {
664 rss += sizeof (slot->curstackinfo); 692 rss += sizeof (slot->curstackinfo);
665 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 693 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
666 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 694 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
667 rss += slot->tmps_max * sizeof (SV *); 695 rss += slot->tmps_max * sizeof (SV *);
668 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 696 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
669 rss += slot->scopestack_max * sizeof (I32); 697 rss += slot->scopestack_max * sizeof (I32);
670 rss += slot->savestack_max * sizeof (ANY); 698 rss += slot->savestack_max * sizeof (ANY);
671 699
672#if !PERL_VERSION_ATLEAST (5,10,0) 700#if !PERL_VERSION_ATLEAST (5,10,0)
673 rss += slot->retstack_max * sizeof (OP *); 701 rss += slot->retstack_max * sizeof (OP *);
674#endif 702#endif
703 }
675 } 704 }
676 705
677 return rss; 706 return rss;
678} 707}
679 708
680/** coroutine stack handling ************************************************/ 709/** coroutine stack handling ************************************************/
681 710
682static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 711static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
683static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 712static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
713static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
714
715/* apparently < 5.8.8 */
716#ifndef MgPV_nolen_const
717#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
718 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
719 (const char*)(mg)->mg_ptr)
720#endif
684 721
685/* 722/*
686 * This overrides the default magic get method of %SIG elements. 723 * This overrides the default magic get method of %SIG elements.
687 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 724 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
688 * and instead of tryign to save and restore the hash elements, we just provide 725 * and instead of tryign to save and restore the hash elements, we just provide
… …
696{ 733{
697 const char *s = MgPV_nolen_const (mg); 734 const char *s = MgPV_nolen_const (mg);
698 735
699 if (*s == '_') 736 if (*s == '_')
700 { 737 {
701 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 738 SV **svp = 0;
702 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 739
740 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
741 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
742
743 if (svp)
744 {
745 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
746 return 0;
747 }
703 } 748 }
704 749
705 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 750 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
751}
752
753static int
754coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
755{
756 const char *s = MgPV_nolen_const (mg);
757
758 if (*s == '_')
759 {
760 SV **svp = 0;
761
762 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
763 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
764
765 if (svp)
766 {
767 SV *old = *svp;
768 *svp = 0;
769 SvREFCNT_dec (old);
770 return 0;
771 }
772 }
773
774 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
706} 775}
707 776
708static int 777static int
709coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 778coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
710{ 779{
… …
725 return 0; 794 return 0;
726 } 795 }
727 } 796 }
728 797
729 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 798 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
799}
800
801static void
802prepare_nop (pTHX_ struct coro_transfer_args *ta)
803{
804 /* kind of mega-hacky, but works */
805 ta->next = ta->prev = (struct coro *)ta;
806}
807
808static int
809slf_check_nop (pTHX_ struct CoroSLF *frame)
810{
811 return 0;
730} 812}
731 813
732static void 814static void
733coro_setup (pTHX_ struct coro *coro) 815coro_setup (pTHX_ struct coro *coro)
734{ 816{
… …
757 GvSV (PL_defgv) = newSV (0); 839 GvSV (PL_defgv) = newSV (0);
758 GvAV (PL_defgv) = coro->args; coro->args = 0; 840 GvAV (PL_defgv) = coro->args; coro->args = 0;
759 GvSV (PL_errgv) = newSV (0); 841 GvSV (PL_errgv) = newSV (0);
760 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 842 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
761 PL_rs = newSVsv (GvSV (irsgv)); 843 PL_rs = newSVsv (GvSV (irsgv));
762 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 844 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
763 845
764 { 846 {
765 dSP; 847 dSP;
766 LOGOP myop; 848 UNOP myop;
767 849
768 Zero (&myop, 1, LOGOP); 850 Zero (&myop, 1, UNOP);
769 myop.op_next = Nullop; 851 myop.op_next = Nullop;
770 myop.op_flags = OPf_WANT_VOID; 852 myop.op_flags = OPf_WANT_VOID;
771 853
772 PUSHMARK (SP); 854 PUSHMARK (SP);
773 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 855 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
776 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 858 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
777 SPAGAIN; 859 SPAGAIN;
778 } 860 }
779 861
780 /* this newly created coroutine might be run on an existing cctx which most 862 /* this newly created coroutine might be run on an existing cctx which most
781 * likely was suspended in set_stacklevel, called from entersub. 863 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
782 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
783 * so we ENTER here for symmetry
784 */ 864 */
785 ENTER; 865 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
866 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
786} 867}
787 868
788static void 869static void
789coro_destroy (pTHX_ struct coro *coro) 870coro_destruct (pTHX_ struct coro *coro)
790{ 871{
791 if (!IN_DESTRUCT) 872 if (!IN_DESTRUCT)
792 { 873 {
793 /* restore all saved variables and stuff */ 874 /* restore all saved variables and stuff */
794 LEAVE_SCOPE (0); 875 LEAVE_SCOPE (0);
… …
816 SvREFCNT_dec (PL_warnhook); 897 SvREFCNT_dec (PL_warnhook);
817 898
818 SvREFCNT_dec (coro->saved_deffh); 899 SvREFCNT_dec (coro->saved_deffh);
819 SvREFCNT_dec (coro->throw); 900 SvREFCNT_dec (coro->throw);
820 901
821 coro_destroy_stacks (aTHX); 902 coro_destruct_stacks (aTHX);
822} 903}
823 904
824static void 905INLINE void
825free_coro_mortal (pTHX) 906free_coro_mortal (pTHX)
826{ 907{
827 if (expect_true (coro_mortal)) 908 if (expect_true (coro_mortal))
828 { 909 {
829 SvREFCNT_dec (coro_mortal); 910 SvREFCNT_dec (coro_mortal);
… …
863 : cx->blk_gimme == G_SCALAR ? bot + 1 944 : cx->blk_gimme == G_SCALAR ? bot + 1
864 : bot; 945 : bot;
865 946
866 av_extend (av, top - bot); 947 av_extend (av, top - bot);
867 while (bot < top) 948 while (bot < top)
868 av_push (av, SvREFCNT_inc (*bot++)); 949 av_push (av, SvREFCNT_inc_NN (*bot++));
869 950
870 PL_runops = RUNOPS_DEFAULT; 951 PL_runops = RUNOPS_DEFAULT;
871 ENTER; 952 ENTER;
872 SAVETMPS; 953 SAVETMPS;
873 EXTEND (SP, 3); 954 EXTEND (SP, 3);
… …
953 1034
954 TAINT_NOT; 1035 TAINT_NOT;
955 return 0; 1036 return 0;
956} 1037}
957 1038
1039static void
1040prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1041{
1042 ta->prev = (struct coro *)cctx;
1043 ta->next = 0;
1044}
1045
958/* inject a fake call to Coro::State::_cctx_init into the execution */ 1046/* inject a fake call to Coro::State::_cctx_init into the execution */
959/* _cctx_init should be careful, as it could be called at almost any time */ 1047/* _cctx_init should be careful, as it could be called at almost any time */
960/* during execution of a perl program */ 1048/* during execution of a perl program */
1049/* also initialises PL_top_env */
961static void NOINLINE 1050static void NOINLINE
962cctx_prepare (pTHX_ coro_cctx *cctx) 1051cctx_prepare (pTHX_ coro_cctx *cctx)
963{ 1052{
964 dSP; 1053 dSP;
965 LOGOP myop; 1054 UNOP myop;
966 1055
967 PL_top_env = &PL_start_env; 1056 PL_top_env = &PL_start_env;
968 1057
969 if (cctx->flags & CC_TRACE) 1058 if (cctx->flags & CC_TRACE)
970 PL_runops = runops_trace; 1059 PL_runops = runops_trace;
971 1060
972 Zero (&myop, 1, LOGOP); 1061 Zero (&myop, 1, UNOP);
973 myop.op_next = PL_op; 1062 myop.op_next = PL_op;
974 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1063 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
975 1064
976 PUSHMARK (SP); 1065 PUSHMARK (SP);
977 EXTEND (SP, 2); 1066 EXTEND (SP, 2);
978 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1067 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
979 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1068 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
980 PUTBACK; 1069 PUTBACK;
981 PL_op = (OP *)&myop; 1070 PL_op = (OP *)&myop;
982 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1071 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
983 SPAGAIN; 1072 SPAGAIN;
984} 1073}
985 1074
1075/* the tail of transfer: execute stuff we can only do after a transfer */
1076INLINE void
1077transfer_tail (pTHX)
1078{
1079 struct coro *next = (struct coro *)transfer_next;
1080 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1081 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1082
1083 free_coro_mortal (aTHX);
1084
1085 if (expect_false (next->throw))
1086 {
1087 SV *exception = sv_2mortal (next->throw);
1088
1089 next->throw = 0;
1090 sv_setsv (ERRSV, exception);
1091 croak (0);
1092 }
1093}
1094
986/* 1095/*
987 * this is a _very_ stripped down perl interpreter ;) 1096 * this is a _very_ stripped down perl interpreter ;)
988 */ 1097 */
989static void 1098static void
990cctx_run (void *arg) 1099cctx_run (void *arg)
991{ 1100{
1101#ifdef USE_ITHREADS
1102# if CORO_PTHREAD
1103 PERL_SET_CONTEXT (coro_thx);
1104# endif
1105#endif
1106 {
992 dTHX; 1107 dTHX;
993 1108
994 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1109 /* normally we would need to skip the entersub here */
995 UNLOCK; 1110 /* not doing so will re-execute it, which is exactly what we want */
996
997 /* we now skip the entersub that lead to transfer() */
998 PL_op = PL_op->op_next; 1111 /* PL_nop = PL_nop->op_next */
999 1112
1000 /* inject a fake subroutine call to cctx_init */ 1113 /* inject a fake subroutine call to cctx_init */
1001 cctx_prepare (aTHX_ (coro_cctx *)arg); 1114 cctx_prepare (aTHX_ (coro_cctx *)arg);
1002 1115
1116 /* cctx_run is the alternative tail of transfer() */
1117 /* TODO: throwing an exception here might be deadly, VERIFY */
1118 transfer_tail (aTHX);
1119
1003 /* somebody or something will hit me for both perl_run and PL_restartop */ 1120 /* somebody or something will hit me for both perl_run and PL_restartop */
1004 PL_restartop = PL_op; 1121 PL_restartop = PL_op;
1005 perl_run (PL_curinterp); 1122 perl_run (PL_curinterp);
1006 1123
1007 /* 1124 /*
1008 * If perl-run returns we assume exit() was being called or the coro 1125 * If perl-run returns we assume exit() was being called or the coro
1009 * fell off the end, which seems to be the only valid (non-bug) 1126 * fell off the end, which seems to be the only valid (non-bug)
1010 * reason for perl_run to return. We try to exit by jumping to the 1127 * reason for perl_run to return. We try to exit by jumping to the
1011 * bootstrap-time "top" top_env, as we cannot restore the "main" 1128 * bootstrap-time "top" top_env, as we cannot restore the "main"
1012 * coroutine as Coro has no such concept 1129 * coroutine as Coro has no such concept
1013 */ 1130 */
1014 PL_top_env = main_top_env; 1131 PL_top_env = main_top_env;
1015 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1132 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1133 }
1016} 1134}
1017 1135
1018static coro_cctx * 1136static coro_cctx *
1019cctx_new () 1137cctx_new ()
1020{ 1138{
1021 coro_cctx *cctx; 1139 coro_cctx *cctx;
1140
1141 ++cctx_count;
1142 New (0, cctx, 1, coro_cctx);
1143
1144 cctx->gen = cctx_gen;
1145 cctx->flags = 0;
1146 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1147
1148 return cctx;
1149}
1150
1151/* create a new cctx only suitable as source */
1152static coro_cctx *
1153cctx_new_empty ()
1154{
1155 coro_cctx *cctx = cctx_new ();
1156
1157 cctx->sptr = 0;
1158 coro_create (&cctx->cctx, 0, 0, 0, 0);
1159
1160 return cctx;
1161}
1162
1163/* create a new cctx suitable as destination/running a perl interpreter */
1164static coro_cctx *
1165cctx_new_run ()
1166{
1167 coro_cctx *cctx = cctx_new ();
1022 void *stack_start; 1168 void *stack_start;
1023 size_t stack_size; 1169 size_t stack_size;
1024 1170
1025 ++cctx_count;
1026
1027 Newz (0, cctx, 1, coro_cctx);
1028
1029#if HAVE_MMAP 1171#if HAVE_MMAP
1030 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1172 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1031 /* mmap supposedly does allocate-on-write for us */ 1173 /* mmap supposedly does allocate-on-write for us */
1032 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1174 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1033 1175
1034 if (cctx->sptr != (void *)-1) 1176 if (cctx->sptr != (void *)-1)
1035 { 1177 {
1036# if CORO_STACKGUARD 1178 #if CORO_STACKGUARD
1037 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1179 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1038# endif 1180 #endif
1039 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1181 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1040 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1182 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1041 cctx->flags |= CC_MAPPED; 1183 cctx->flags |= CC_MAPPED;
1042 } 1184 }
1043 else 1185 else
1044#endif 1186#endif
1045 { 1187 {
1046 cctx->ssize = coro_stacksize * (long)sizeof (long); 1188 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1047 New (0, cctx->sptr, coro_stacksize, long); 1189 New (0, cctx->sptr, cctx_stacksize, long);
1048 1190
1049 if (!cctx->sptr) 1191 if (!cctx->sptr)
1050 { 1192 {
1051 perror ("FATAL: unable to allocate stack for coroutine"); 1193 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1052 _exit (EXIT_FAILURE); 1194 _exit (EXIT_FAILURE);
1053 } 1195 }
1054 1196
1055 stack_start = cctx->sptr; 1197 stack_start = cctx->sptr;
1056 stack_size = cctx->ssize; 1198 stack_size = cctx->ssize;
1057 } 1199 }
1058 1200
1059 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1201 #if CORO_USE_VALGRIND
1202 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1203 #endif
1204
1060 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1205 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1061 1206
1062 return cctx; 1207 return cctx;
1063} 1208}
1064 1209
… …
1067{ 1212{
1068 if (!cctx) 1213 if (!cctx)
1069 return; 1214 return;
1070 1215
1071 --cctx_count; 1216 --cctx_count;
1217 coro_destroy (&cctx->cctx);
1072 1218
1219 /* coro_transfer creates new, empty cctx's */
1220 if (cctx->sptr)
1221 {
1073#if CORO_USE_VALGRIND 1222 #if CORO_USE_VALGRIND
1074 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1223 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1075#endif 1224 #endif
1076 1225
1077#if HAVE_MMAP 1226#if HAVE_MMAP
1078 if (cctx->flags & CC_MAPPED) 1227 if (cctx->flags & CC_MAPPED)
1079 munmap (cctx->sptr, cctx->ssize); 1228 munmap (cctx->sptr, cctx->ssize);
1080 else 1229 else
1081#endif 1230#endif
1082 Safefree (cctx->sptr); 1231 Safefree (cctx->sptr);
1232 }
1083 1233
1084 Safefree (cctx); 1234 Safefree (cctx);
1085} 1235}
1086 1236
1087/* wether this cctx should be destructed */ 1237/* wether this cctx should be destructed */
1088#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1238#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1089 1239
1090static coro_cctx * 1240static coro_cctx *
1091cctx_get (pTHX) 1241cctx_get (pTHX)
1092{ 1242{
1093 while (expect_true (cctx_first)) 1243 while (expect_true (cctx_first))
… …
1100 return cctx; 1250 return cctx;
1101 1251
1102 cctx_destroy (cctx); 1252 cctx_destroy (cctx);
1103 } 1253 }
1104 1254
1105 return cctx_new (); 1255 return cctx_new_run ();
1106} 1256}
1107 1257
1108static void 1258static void
1109cctx_put (coro_cctx *cctx) 1259cctx_put (coro_cctx *cctx)
1110{ 1260{
1261 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1262
1111 /* free another cctx if overlimit */ 1263 /* free another cctx if overlimit */
1112 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1264 if (expect_false (cctx_idle >= cctx_max_idle))
1113 { 1265 {
1114 coro_cctx *first = cctx_first; 1266 coro_cctx *first = cctx_first;
1115 cctx_first = first->next; 1267 cctx_first = first->next;
1116 --cctx_idle; 1268 --cctx_idle;
1117 1269
… …
1129transfer_check (pTHX_ struct coro *prev, struct coro *next) 1281transfer_check (pTHX_ struct coro *prev, struct coro *next)
1130{ 1282{
1131 if (expect_true (prev != next)) 1283 if (expect_true (prev != next))
1132 { 1284 {
1133 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1285 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1134 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1286 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1135 1287
1136 if (expect_false (next->flags & CF_RUNNING)) 1288 if (expect_false (next->flags & CF_RUNNING))
1137 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1289 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1138 1290
1139 if (expect_false (next->flags & CF_DESTROYED)) 1291 if (expect_false (next->flags & CF_DESTROYED))
1140 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1292 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1141 1293
1142#if !PERL_VERSION_ATLEAST (5,10,0) 1294#if !PERL_VERSION_ATLEAST (5,10,0)
1143 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1295 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1144 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1296 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1145#endif 1297#endif
1146 } 1298 }
1147} 1299}
1148 1300
1149/* always use the TRANSFER macro */ 1301/* always use the TRANSFER macro */
1150static void NOINLINE 1302static void NOINLINE
1151transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1303transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1152{ 1304{
1153 dSTACKLEVEL; 1305 dSTACKLEVEL;
1154 static volatile int has_throw;
1155 1306
1156 /* sometimes transfer is only called to set idle_sp */ 1307 /* sometimes transfer is only called to set idle_sp */
1157 if (expect_false (!next)) 1308 if (expect_false (!next))
1158 { 1309 {
1159 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1310 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1160 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1311 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1161 } 1312 }
1162 else if (expect_true (prev != next)) 1313 else if (expect_true (prev != next))
1163 { 1314 {
1164 coro_cctx *prev__cctx; 1315 coro_cctx *prev__cctx;
1165 1316
1166 if (expect_false (prev->flags & CF_NEW)) 1317 if (expect_false (prev->flags & CF_NEW))
1167 { 1318 {
1168 /* create a new empty context */ 1319 /* create a new empty/source context */
1169 Newz (0, prev->cctx, 1, coro_cctx); 1320 prev->cctx = cctx_new_empty ();
1170 prev->flags &= ~CF_NEW; 1321 prev->flags &= ~CF_NEW;
1171 prev->flags |= CF_RUNNING; 1322 prev->flags |= CF_RUNNING;
1172 } 1323 }
1173 1324
1174 prev->flags &= ~CF_RUNNING; 1325 prev->flags &= ~CF_RUNNING;
1175 next->flags |= CF_RUNNING; 1326 next->flags |= CF_RUNNING;
1176
1177 LOCK;
1178 1327
1179 /* first get rid of the old state */ 1328 /* first get rid of the old state */
1180 save_perl (aTHX_ prev); 1329 save_perl (aTHX_ prev);
1181 1330
1182 if (expect_false (next->flags & CF_NEW)) 1331 if (expect_false (next->flags & CF_NEW))
… …
1189 else 1338 else
1190 load_perl (aTHX_ next); 1339 load_perl (aTHX_ next);
1191 1340
1192 prev__cctx = prev->cctx; 1341 prev__cctx = prev->cctx;
1193 1342
1194 /* possibly "free" the cctx */ 1343 /* possibly untie and reuse the cctx */
1195 if (expect_true ( 1344 if (expect_true (
1196 prev__cctx->idle_sp == STACKLEVEL 1345 prev__cctx->idle_sp == (void *)stacklevel
1197 && !(prev__cctx->flags & CC_TRACE) 1346 && !(prev__cctx->flags & CC_TRACE)
1198 && !force_cctx 1347 && !force_cctx
1199 )) 1348 ))
1200 { 1349 {
1201 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1350 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1202 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1351 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1203 1352
1204 prev->cctx = 0; 1353 prev->cctx = 0;
1205 1354
1206 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1355 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1207 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1356 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1215 ++next->usecount; 1364 ++next->usecount;
1216 1365
1217 if (expect_true (!next->cctx)) 1366 if (expect_true (!next->cctx))
1218 next->cctx = cctx_get (aTHX); 1367 next->cctx = cctx_get (aTHX);
1219 1368
1220 has_throw = !!next->throw; 1369 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1370 transfer_next = next;
1221 1371
1222 if (expect_false (prev__cctx != next->cctx)) 1372 if (expect_false (prev__cctx != next->cctx))
1223 { 1373 {
1224 prev__cctx->top_env = PL_top_env; 1374 prev__cctx->top_env = PL_top_env;
1225 PL_top_env = next->cctx->top_env; 1375 PL_top_env = next->cctx->top_env;
1226 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1376 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1227 } 1377 }
1228 1378
1229 free_coro_mortal (aTHX); 1379 transfer_tail (aTHX);
1230 UNLOCK;
1231
1232 if (expect_false (has_throw))
1233 {
1234 struct coro *coro = SvSTATE (coro_current);
1235
1236 if (coro->throw)
1237 {
1238 SV *exception = coro->throw;
1239 coro->throw = 0;
1240 sv_setsv (ERRSV, exception);
1241 croak (0);
1242 }
1243 }
1244 } 1380 }
1245} 1381}
1246
1247struct transfer_args
1248{
1249 struct coro *prev, *next;
1250};
1251 1382
1252#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1383#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1253#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1384#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1254 1385
1255/** high level stuff ********************************************************/ 1386/** high level stuff ********************************************************/
… …
1257static int 1388static int
1258coro_state_destroy (pTHX_ struct coro *coro) 1389coro_state_destroy (pTHX_ struct coro *coro)
1259{ 1390{
1260 if (coro->flags & CF_DESTROYED) 1391 if (coro->flags & CF_DESTROYED)
1261 return 0; 1392 return 0;
1393
1394 if (coro->on_destroy)
1395 coro->on_destroy (aTHX_ coro);
1262 1396
1263 coro->flags |= CF_DESTROYED; 1397 coro->flags |= CF_DESTROYED;
1264 1398
1265 if (coro->flags & CF_READY) 1399 if (coro->flags & CF_READY)
1266 { 1400 {
1267 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1401 /* reduce nready, as destroying a ready coro effectively unreadies it */
1268 /* alternative: look through all ready queues and remove the coro */ 1402 /* alternative: look through all ready queues and remove the coro */
1269 LOCK;
1270 --coro_nready; 1403 --coro_nready;
1271 UNLOCK;
1272 } 1404 }
1273 else 1405 else
1274 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1406 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1275 1407
1276 if (coro->mainstack && coro->mainstack != main_mainstack) 1408 if (coro->mainstack && coro->mainstack != main_mainstack)
1277 { 1409 {
1278 struct coro temp; 1410 struct coro temp;
1279 1411
1280 if (coro->flags & CF_RUNNING) 1412 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1281 croak ("FATAL: tried to destroy currently running coroutine");
1282 1413
1283 save_perl (aTHX_ &temp); 1414 save_perl (aTHX_ &temp);
1284 load_perl (aTHX_ coro); 1415 load_perl (aTHX_ coro);
1285 1416
1286 coro_destroy (aTHX_ coro); 1417 coro_destruct (aTHX_ coro);
1287 1418
1288 load_perl (aTHX_ &temp); 1419 load_perl (aTHX_ &temp);
1289 1420
1290 coro->slot = 0; 1421 coro->slot = 0;
1291 } 1422 }
… …
1337# define MGf_DUP 0 1468# define MGf_DUP 0
1338#endif 1469#endif
1339}; 1470};
1340 1471
1341static void 1472static void
1342prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1473prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1343{ 1474{
1344 ta->prev = SvSTATE (prev_sv); 1475 ta->prev = SvSTATE (prev_sv);
1345 ta->next = SvSTATE (next_sv); 1476 ta->next = SvSTATE (next_sv);
1346 TRANSFER_CHECK (*ta); 1477 TRANSFER_CHECK (*ta);
1347} 1478}
1348 1479
1349static void 1480static void
1350api_transfer (SV *prev_sv, SV *next_sv) 1481api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1351{ 1482{
1352 dTHX;
1353 struct transfer_args ta; 1483 struct coro_transfer_args ta;
1354 1484
1355 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1485 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1356 TRANSFER (ta, 1); 1486 TRANSFER (ta, 1);
1357} 1487}
1358 1488
… …
1375 1505
1376 return 0; 1506 return 0;
1377} 1507}
1378 1508
1379static int 1509static int
1380api_ready (SV *coro_sv) 1510api_ready (pTHX_ SV *coro_sv)
1381{ 1511{
1382 dTHX;
1383 struct coro *coro; 1512 struct coro *coro;
1513 SV *sv_hook;
1514 void (*xs_hook)(void);
1384 1515
1385 if (SvROK (coro_sv)) 1516 if (SvROK (coro_sv))
1386 coro_sv = SvRV (coro_sv); 1517 coro_sv = SvRV (coro_sv);
1387 1518
1388 coro = SvSTATE (coro_sv); 1519 coro = SvSTATE (coro_sv);
… …
1390 if (coro->flags & CF_READY) 1521 if (coro->flags & CF_READY)
1391 return 0; 1522 return 0;
1392 1523
1393 coro->flags |= CF_READY; 1524 coro->flags |= CF_READY;
1394 1525
1395 LOCK; 1526 sv_hook = coro_nready ? 0 : coro_readyhook;
1527 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1528
1396 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1529 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1397 ++coro_nready; 1530 ++coro_nready;
1398 UNLOCK; 1531
1532 if (sv_hook)
1533 {
1534 dSP;
1535
1536 ENTER;
1537 SAVETMPS;
1538
1539 PUSHMARK (SP);
1540 PUTBACK;
1541 call_sv (sv_hook, G_DISCARD);
1542 SPAGAIN;
1543
1544 FREETMPS;
1545 LEAVE;
1546 }
1547
1548 if (xs_hook)
1549 xs_hook ();
1399 1550
1400 return 1; 1551 return 1;
1401} 1552}
1402 1553
1403static int 1554static int
1404api_is_ready (SV *coro_sv) 1555api_is_ready (pTHX_ SV *coro_sv)
1405{ 1556{
1406 dTHX;
1407 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1557 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1408} 1558}
1409 1559
1410static void 1560INLINE void
1411prepare_schedule (pTHX_ struct transfer_args *ta) 1561prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1412{ 1562{
1413 SV *prev_sv, *next_sv; 1563 SV *prev_sv, *next_sv;
1414 1564
1415 for (;;) 1565 for (;;)
1416 { 1566 {
1417 LOCK;
1418 next_sv = coro_deq (aTHX); 1567 next_sv = coro_deq (aTHX);
1419 1568
1420 /* nothing to schedule: call the idle handler */ 1569 /* nothing to schedule: call the idle handler */
1421 if (expect_false (!next_sv)) 1570 if (expect_false (!next_sv))
1422 { 1571 {
1423 dSP; 1572 dSP;
1424 UNLOCK;
1425 1573
1426 ENTER; 1574 ENTER;
1427 SAVETMPS; 1575 SAVETMPS;
1428 1576
1429 PUSHMARK (SP); 1577 PUSHMARK (SP);
… …
1439 ta->next = SvSTATE (next_sv); 1587 ta->next = SvSTATE (next_sv);
1440 1588
1441 /* cannot transfer to destroyed coros, skip and look for next */ 1589 /* cannot transfer to destroyed coros, skip and look for next */
1442 if (expect_false (ta->next->flags & CF_DESTROYED)) 1590 if (expect_false (ta->next->flags & CF_DESTROYED))
1443 { 1591 {
1444 UNLOCK;
1445 SvREFCNT_dec (next_sv); 1592 SvREFCNT_dec (next_sv);
1446 /* coro_nready is already taken care of by destroy */ 1593 /* coro_nready has already been taken care of by destroy */
1447 continue; 1594 continue;
1448 } 1595 }
1449 1596
1450 --coro_nready; 1597 --coro_nready;
1451 UNLOCK;
1452 break; 1598 break;
1453 } 1599 }
1454 1600
1455 /* free this only after the transfer */ 1601 /* free this only after the transfer */
1456 prev_sv = SvRV (coro_current); 1602 prev_sv = SvRV (coro_current);
1457 ta->prev = SvSTATE (prev_sv); 1603 ta->prev = SvSTATE (prev_sv);
1458 TRANSFER_CHECK (*ta); 1604 TRANSFER_CHECK (*ta);
1459 assert (ta->next->flags & CF_READY); 1605 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1460 ta->next->flags &= ~CF_READY; 1606 ta->next->flags &= ~CF_READY;
1461 SvRV_set (coro_current, next_sv); 1607 SvRV_set (coro_current, next_sv);
1462 1608
1463 LOCK;
1464 free_coro_mortal (aTHX); 1609 free_coro_mortal (aTHX);
1465 coro_mortal = prev_sv; 1610 coro_mortal = prev_sv;
1466 UNLOCK;
1467} 1611}
1468 1612
1469static void 1613INLINE void
1470prepare_cede (pTHX_ struct transfer_args *ta) 1614prepare_cede (pTHX_ struct coro_transfer_args *ta)
1471{ 1615{
1472 api_ready (coro_current); 1616 api_ready (aTHX_ coro_current);
1473 prepare_schedule (aTHX_ ta); 1617 prepare_schedule (aTHX_ ta);
1474} 1618}
1475 1619
1620INLINE void
1621prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1622{
1623 SV *prev = SvRV (coro_current);
1624
1625 if (coro_nready)
1626 {
1627 prepare_schedule (aTHX_ ta);
1628 api_ready (aTHX_ prev);
1629 }
1630 else
1631 prepare_nop (aTHX_ ta);
1632}
1633
1634static void
1635api_schedule (pTHX)
1636{
1637 struct coro_transfer_args ta;
1638
1639 prepare_schedule (aTHX_ &ta);
1640 TRANSFER (ta, 1);
1641}
1642
1476static int 1643static int
1477prepare_cede_notself (pTHX_ struct transfer_args *ta) 1644api_cede (pTHX)
1478{ 1645{
1479 if (coro_nready) 1646 struct coro_transfer_args ta;
1480 { 1647
1481 SV *prev = SvRV (coro_current);
1482 prepare_schedule (aTHX_ ta); 1648 prepare_cede (aTHX_ &ta);
1483 api_ready (prev); 1649
1650 if (expect_true (ta.prev != ta.next))
1651 {
1652 TRANSFER (ta, 1);
1484 return 1; 1653 return 1;
1485 } 1654 }
1486 else 1655 else
1487 return 0; 1656 return 0;
1488} 1657}
1489 1658
1490static void
1491api_schedule (void)
1492{
1493 dTHX;
1494 struct transfer_args ta;
1495
1496 prepare_schedule (aTHX_ &ta);
1497 TRANSFER (ta, 1);
1498}
1499
1500static int 1659static int
1501api_cede (void) 1660api_cede_notself (pTHX)
1502{ 1661{
1503 dTHX; 1662 if (coro_nready)
1663 {
1504 struct transfer_args ta; 1664 struct coro_transfer_args ta;
1505 1665
1506 prepare_cede (aTHX_ &ta); 1666 prepare_cede_notself (aTHX_ &ta);
1507
1508 if (expect_true (ta.prev != ta.next))
1509 {
1510 TRANSFER (ta, 1); 1667 TRANSFER (ta, 1);
1511 return 1; 1668 return 1;
1512 } 1669 }
1513 else 1670 else
1514 return 0; 1671 return 0;
1515} 1672}
1516 1673
1517static int 1674static void
1518api_cede_notself (void)
1519{
1520 dTHX;
1521 struct transfer_args ta;
1522
1523 if (prepare_cede_notself (aTHX_ &ta))
1524 {
1525 TRANSFER (ta, 1);
1526 return 1;
1527 }
1528 else
1529 return 0;
1530}
1531
1532static void
1533api_trace (SV *coro_sv, int flags) 1675api_trace (pTHX_ SV *coro_sv, int flags)
1534{ 1676{
1535 dTHX;
1536 struct coro *coro = SvSTATE (coro_sv); 1677 struct coro *coro = SvSTATE (coro_sv);
1537 1678
1538 if (flags & CC_TRACE) 1679 if (flags & CC_TRACE)
1539 { 1680 {
1540 if (!coro->cctx) 1681 if (!coro->cctx)
1541 coro->cctx = cctx_new (); 1682 coro->cctx = cctx_new_run ();
1542 else if (!(coro->cctx->flags & CC_TRACE)) 1683 else if (!(coro->cctx->flags & CC_TRACE))
1543 croak ("cannot enable tracing on coroutine with custom stack"); 1684 croak ("cannot enable tracing on coroutine with custom stack,");
1544 1685
1545 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1686 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1546 } 1687 }
1547 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1688 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1548 { 1689 {
… …
1553 else 1694 else
1554 coro->slot->runops = RUNOPS_DEFAULT; 1695 coro->slot->runops = RUNOPS_DEFAULT;
1555 } 1696 }
1556} 1697}
1557 1698
1699/*****************************************************************************/
1700/* PerlIO::cede */
1701
1702typedef struct
1703{
1704 PerlIOBuf base;
1705 NV next, every;
1706} PerlIOCede;
1707
1708static IV
1709PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1710{
1711 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1712
1713 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1714 self->next = nvtime () + self->every;
1715
1716 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1717}
1718
1719static SV *
1720PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1721{
1722 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1723
1724 return newSVnv (self->every);
1725}
1726
1727static IV
1728PerlIOCede_flush (pTHX_ PerlIO *f)
1729{
1730 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1731 double now = nvtime ();
1732
1733 if (now >= self->next)
1734 {
1735 api_cede (aTHX);
1736 self->next = now + self->every;
1737 }
1738
1739 return PerlIOBuf_flush (aTHX_ f);
1740}
1741
1742static PerlIO_funcs PerlIO_cede =
1743{
1744 sizeof(PerlIO_funcs),
1745 "cede",
1746 sizeof(PerlIOCede),
1747 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1748 PerlIOCede_pushed,
1749 PerlIOBuf_popped,
1750 PerlIOBuf_open,
1751 PerlIOBase_binmode,
1752 PerlIOCede_getarg,
1753 PerlIOBase_fileno,
1754 PerlIOBuf_dup,
1755 PerlIOBuf_read,
1756 PerlIOBuf_unread,
1757 PerlIOBuf_write,
1758 PerlIOBuf_seek,
1759 PerlIOBuf_tell,
1760 PerlIOBuf_close,
1761 PerlIOCede_flush,
1762 PerlIOBuf_fill,
1763 PerlIOBase_eof,
1764 PerlIOBase_error,
1765 PerlIOBase_clearerr,
1766 PerlIOBase_setlinebuf,
1767 PerlIOBuf_get_base,
1768 PerlIOBuf_bufsiz,
1769 PerlIOBuf_get_ptr,
1770 PerlIOBuf_get_cnt,
1771 PerlIOBuf_set_ptrcnt,
1772};
1773
1774/*****************************************************************************/
1775
1776static const CV *slf_cv; /* for quick consistency check */
1777
1778static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1779static SV *slf_arg0;
1780static SV *slf_arg1;
1781static SV *slf_arg2;
1782
1783/* this restores the stack in the case we patched the entersub, to */
1784/* recreate the stack frame as perl will on following calls */
1785/* since entersub cleared the stack */
1786static OP *
1787pp_restore (pTHX)
1788{
1789 dSP;
1790
1791 PUSHMARK (SP);
1792
1793 EXTEND (SP, 3);
1794 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1795 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1796 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1797 PUSHs ((SV *)CvGV (slf_cv));
1798
1799 RETURNOP (slf_restore.op_first);
1800}
1801
1802static void
1803slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1804{
1805 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1806}
1807
1808static void
1809slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1810{
1811 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1812
1813 frame->prepare = slf_prepare_set_stacklevel;
1814 frame->check = slf_check_nop;
1815 frame->data = (void *)SvIV (arg [0]);
1816}
1817
1818static void
1819slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1820{
1821 SV **arg = (SV **)slf_frame.data;
1822
1823 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1824}
1825
1826static void
1827slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1828{
1829 if (items != 2)
1830 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1831
1832 frame->prepare = slf_prepare_transfer;
1833 frame->check = slf_check_nop;
1834 frame->data = (void *)arg; /* let's hope it will stay valid */
1835}
1836
1837static void
1838slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 frame->prepare = prepare_schedule;
1841 frame->check = slf_check_nop;
1842}
1843
1844static void
1845slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1846{
1847 frame->prepare = prepare_cede;
1848 frame->check = slf_check_nop;
1849}
1850
1851static void
1852slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1853{
1854 frame->prepare = prepare_cede_notself;
1855 frame->check = slf_check_nop;
1856}
1857
1858/* we hijack an hopefully unused CV flag for our purposes */
1859#define CVf_SLF 0x4000
1860
1861/*
1862 * these not obviously related functions are all rolled into one
1863 * function to increase chances that they all will call transfer with the same
1864 * stack offset
1865 * SLF stands for "schedule-like-function".
1866 */
1867static OP *
1868pp_slf (pTHX)
1869{
1870 I32 checkmark; /* mark SP to see how many elements check has pushed */
1871
1872 /* set up the slf frame, unless it has already been set-up */
1873 /* the latter happens when a new coro has been started */
1874 /* or when a new cctx was attached to an existing coroutine */
1875 if (expect_true (!slf_frame.prepare))
1876 {
1877 /* first iteration */
1878 dSP;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 SV *gv = *sp;
1882
1883 /* do a quick consistency check on the "function" object, and if it isn't */
1884 /* for us, divert to the real entersub */
1885 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1886 return PL_ppaddr[OP_ENTERSUB](aTHX);
1887
1888 /* pop args */
1889 SP = PL_stack_base + POPMARK;
1890
1891 if (!(PL_op->op_flags & OPf_STACKED))
1892 {
1893 /* ampersand-form of call, use @_ instead of stack */
1894 AV *av = GvAV (PL_defgv);
1895 arg = AvARRAY (av);
1896 items = AvFILLp (av) + 1;
1897 }
1898
1899 PUTBACK;
1900
1901 /* now call the init function, which needs to set up slf_frame */
1902 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1903 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1904 }
1905
1906 /* now that we have a slf_frame, interpret it! */
1907 /* we use a callback system not to make the code needlessly */
1908 /* complicated, but so we can run multiple perl coros from one cctx */
1909
1910 do
1911 {
1912 struct coro_transfer_args ta;
1913
1914 slf_frame.prepare (aTHX_ &ta);
1915 TRANSFER (ta, 0);
1916
1917 checkmark = PL_stack_sp - PL_stack_base;
1918 }
1919 while (slf_frame.check (aTHX_ &slf_frame));
1920
1921 {
1922 dSP;
1923 SV **bot = PL_stack_base + checkmark;
1924 int gimme = GIMME_V;
1925
1926 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1927
1928 /* make sure we put something on the stack in scalar context */
1929 if (gimme == G_SCALAR)
1930 {
1931 if (sp == bot)
1932 XPUSHs (&PL_sv_undef);
1933
1934 SP = bot + 1;
1935 }
1936
1937 PUTBACK;
1938 }
1939
1940 return NORMAL;
1941}
1942
1943static void
1944api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1945{
1946 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1947
1948 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1949 && PL_op->op_ppaddr != pp_slf)
1950 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1951
1952 if (items > 3)
1953 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1954
1955 CvFLAGS (cv) |= CVf_SLF;
1956 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1957 slf_cv = cv;
1958
1959 /* we patch the op, and then re-run the whole call */
1960 /* we have to put the same argument on the stack for this to work */
1961 /* and this will be done by pp_restore */
1962 slf_restore.op_next = (OP *)&slf_restore;
1963 slf_restore.op_type = OP_CUSTOM;
1964 slf_restore.op_ppaddr = pp_restore;
1965 slf_restore.op_first = PL_op;
1966
1967 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1968 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1969 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1970
1971 PL_op->op_ppaddr = pp_slf;
1972
1973 PL_op = (OP *)&slf_restore;
1974}
1975
1976/*****************************************************************************/
1977
1978static void
1979coro_semaphore_adjust (AV *av, int adjust)
1980{
1981 SV *count_sv = AvARRAY (av)[0];
1982 IV count = SvIVX (count_sv);
1983
1984 count += adjust;
1985 SvIVX (count_sv) = count;
1986
1987 /* now wake up as many waiters as possible */
1988 while (count > 0 && AvFILLp (av) >= count)
1989 {
1990 SV *cb;
1991
1992 /* swap first two elements so we can shift a waiter */
1993 AvARRAY (av)[0] = AvARRAY (av)[1];
1994 AvARRAY (av)[1] = count_sv;
1995 cb = av_shift (av);
1996
1997 if (SvOBJECT (cb))
1998 api_ready (aTHX_ cb);
1999 else
2000 croak ("callbacks not yet supported");
2001
2002 SvREFCNT_dec (cb);
2003
2004 --count;
2005 }
2006}
2007
2008static void
2009coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2010{
2011 /* call $sem->adjust (0) to possibly wake up some waiters */
2012 coro_semaphore_adjust ((AV *)coro->slf_frame.data, 0);
2013}
2014
2015static int
2016slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2017{
2018 AV *av = (AV *)frame->data;
2019 SV *count_sv = AvARRAY (av)[0];
2020
2021 if (SvIVX (count_sv) > 0)
2022 {
2023 SvSTATE (coro_current)->on_destroy = 0;
2024 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2025 return 0;
2026 }
2027 else
2028 {
2029 int i;
2030 /* if we were woken up but can't down, we look through the whole */
2031 /* waiters list and only add us if we aren't in there already */
2032 /* this avoids some degenerate memory usage cases */
2033
2034 for (i = 1; i <= AvFILLp (av); ++i)
2035 if (AvARRAY (av)[i] == SvRV (coro_current))
2036 return 1;
2037
2038 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2039 return 1;
2040 }
2041}
2042
2043static void
2044slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2045{
2046 AV *av = (AV *)SvRV (arg [0]);
2047
2048 if (SvIVX (AvARRAY (av)[0]) > 0)
2049 {
2050 frame->data = (void *)av;
2051 frame->prepare = prepare_nop;
2052 }
2053 else
2054 {
2055 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2056
2057 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2058 frame->prepare = prepare_schedule;
2059
2060 /* to avoid race conditions when a woken-up coro gets terminated */
2061 /* we arrange for a temporary on_destroy that calls adjust (0) */
2062 SvSTATE (coro_current)->on_destroy = coro_semaphore_on_destroy;
2063 }
2064
2065 frame->check = slf_check_semaphore_down;
2066
2067}
2068
2069/*****************************************************************************/
2070
2071#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2072
2073/* create a closure from XS, returns a code reference */
2074/* the arg can be accessed via GENSUB_ARG from the callback */
2075/* the callback must use dXSARGS/XSRETURN */
2076static SV *
2077gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2078{
2079 CV *cv = (CV *)NEWSV (0, 0);
2080
2081 sv_upgrade ((SV *)cv, SVt_PVCV);
2082
2083 CvANON_on (cv);
2084 CvISXSUB_on (cv);
2085 CvXSUB (cv) = xsub;
2086 GENSUB_ARG = arg;
2087
2088 return newRV_noinc ((SV *)cv);
2089}
2090
2091/*****************************************************************************/
2092
1558MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2093MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1559 2094
1560PROTOTYPES: DISABLE 2095PROTOTYPES: DISABLE
1561 2096
1562BOOT: 2097BOOT:
1563{ 2098{
1564#ifdef USE_ITHREADS 2099#ifdef USE_ITHREADS
1565 MUTEX_INIT (&coro_mutex); 2100 MUTEX_INIT (&coro_lock);
2101# if CORO_PTHREAD
2102 coro_thx = PERL_GET_CONTEXT;
2103# endif
1566#endif 2104#endif
1567 BOOT_PAGESIZE; 2105 BOOT_PAGESIZE;
1568 2106
1569 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2107 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1570 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2108 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1571 2109
1572 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 2110 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1573 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2111 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1574 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 2112 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1575 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1576 2113
1577 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 2114 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1578 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 2115 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1579 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 2116 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1580 2117
… …
1589 main_top_env = PL_top_env; 2126 main_top_env = PL_top_env;
1590 2127
1591 while (main_top_env->je_prev) 2128 while (main_top_env->je_prev)
1592 main_top_env = main_top_env->je_prev; 2129 main_top_env = main_top_env->je_prev;
1593 2130
2131 {
2132 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2133
2134 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2135 hv_store_ent (PL_custom_op_names, slf,
2136 newSVpv ("coro_slf", 0), 0);
2137
2138 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2139 hv_store_ent (PL_custom_op_descs, slf,
2140 newSVpv ("coro schedule like function", 0), 0);
2141 }
2142
1594 coroapi.ver = CORO_API_VERSION; 2143 coroapi.ver = CORO_API_VERSION;
1595 coroapi.rev = CORO_API_REVISION; 2144 coroapi.rev = CORO_API_REVISION;
2145
1596 coroapi.transfer = api_transfer; 2146 coroapi.transfer = api_transfer;
2147
2148 coroapi.sv_state = SvSTATE_;
2149 coroapi.execute_slf = api_execute_slf;
2150 coroapi.prepare_nop = prepare_nop;
2151 coroapi.prepare_schedule = prepare_schedule;
2152 coroapi.prepare_cede = prepare_cede;
2153 coroapi.prepare_cede_notself = prepare_cede_notself;
2154
2155 {
2156 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2157
2158 if (!svp) croak ("Time::HiRes is required");
2159 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2160
2161 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2162 }
1597 2163
1598 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2164 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1599} 2165}
1600 2166
1601SV * 2167SV *
… …
1625 av_push (coro->args, newSVsv (ST (i))); 2191 av_push (coro->args, newSVsv (ST (i)));
1626} 2192}
1627 OUTPUT: 2193 OUTPUT:
1628 RETVAL 2194 RETVAL
1629 2195
1630# these not obviously related functions are all rolled into the same xs
1631# function to increase chances that they all will call transfer with the same
1632# stack offset
1633void 2196void
1634_set_stacklevel (...) 2197_set_stacklevel (...)
1635 ALIAS: 2198 CODE:
1636 Coro::State::transfer = 1 2199 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1637 Coro::schedule = 2
1638 Coro::cede = 3
1639 Coro::cede_notself = 4
1640 CODE:
1641{
1642 struct transfer_args ta;
1643 2200
1644 PUTBACK; 2201void
1645 switch (ix) 2202transfer (...)
1646 { 2203 PROTOTYPE: $$
1647 case 0: 2204 CODE:
1648 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2205 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1649 ta.next = 0;
1650 break;
1651
1652 case 1:
1653 if (items != 2)
1654 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1655
1656 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1657 break;
1658
1659 case 2:
1660 prepare_schedule (aTHX_ &ta);
1661 break;
1662
1663 case 3:
1664 prepare_cede (aTHX_ &ta);
1665 break;
1666
1667 case 4:
1668 if (!prepare_cede_notself (aTHX_ &ta))
1669 XSRETURN_EMPTY;
1670
1671 break;
1672 }
1673 SPAGAIN;
1674
1675 BARRIER;
1676 PUTBACK;
1677 TRANSFER (ta, 0);
1678 SPAGAIN; /* might be the sp of a different coroutine now */
1679 /* be extra careful not to ever do anything after TRANSFER */
1680}
1681 2206
1682bool 2207bool
1683_destroy (SV *coro_sv) 2208_destroy (SV *coro_sv)
1684 CODE: 2209 CODE:
1685 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2210 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1686 OUTPUT: 2211 OUTPUT:
1687 RETVAL 2212 RETVAL
1688 2213
1689void 2214void
1690_exit (code) 2215_exit (int code)
1691 int code
1692 PROTOTYPE: $ 2216 PROTOTYPE: $
1693 CODE: 2217 CODE:
1694 _exit (code); 2218 _exit (code);
1695 2219
1696int 2220int
1697cctx_stacksize (int new_stacksize = 0) 2221cctx_stacksize (int new_stacksize = 0)
2222 PROTOTYPE: ;$
1698 CODE: 2223 CODE:
1699 RETVAL = coro_stacksize; 2224 RETVAL = cctx_stacksize;
1700 if (new_stacksize) 2225 if (new_stacksize)
2226 {
1701 coro_stacksize = new_stacksize; 2227 cctx_stacksize = new_stacksize;
2228 ++cctx_gen;
2229 }
1702 OUTPUT: 2230 OUTPUT:
1703 RETVAL 2231 RETVAL
1704 2232
1705int 2233int
2234cctx_max_idle (int max_idle = 0)
2235 PROTOTYPE: ;$
2236 CODE:
2237 RETVAL = cctx_max_idle;
2238 if (max_idle > 1)
2239 cctx_max_idle = max_idle;
2240 OUTPUT:
2241 RETVAL
2242
2243int
1706cctx_count () 2244cctx_count ()
2245 PROTOTYPE:
1707 CODE: 2246 CODE:
1708 RETVAL = cctx_count; 2247 RETVAL = cctx_count;
1709 OUTPUT: 2248 OUTPUT:
1710 RETVAL 2249 RETVAL
1711 2250
1712int 2251int
1713cctx_idle () 2252cctx_idle ()
2253 PROTOTYPE:
1714 CODE: 2254 CODE:
1715 RETVAL = cctx_idle; 2255 RETVAL = cctx_idle;
1716 OUTPUT: 2256 OUTPUT:
1717 RETVAL 2257 RETVAL
1718 2258
1719void 2259void
1720list () 2260list ()
2261 PROTOTYPE:
1721 PPCODE: 2262 PPCODE:
1722{ 2263{
1723 struct coro *coro; 2264 struct coro *coro;
1724 for (coro = coro_first; coro; coro = coro->next) 2265 for (coro = coro_first; coro; coro = coro->next)
1725 if (coro->hv) 2266 if (coro->hv)
… …
1730call (Coro::State coro, SV *coderef) 2271call (Coro::State coro, SV *coderef)
1731 ALIAS: 2272 ALIAS:
1732 eval = 1 2273 eval = 1
1733 CODE: 2274 CODE:
1734{ 2275{
1735 if (coro->mainstack) 2276 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1736 { 2277 {
1737 struct coro temp; 2278 struct coro temp;
1738 2279
1739 if (!(coro->flags & CF_RUNNING)) 2280 if (!(coro->flags & CF_RUNNING))
1740 { 2281 {
… …
1784 RETVAL = boolSV (coro->flags & ix); 2325 RETVAL = boolSV (coro->flags & ix);
1785 OUTPUT: 2326 OUTPUT:
1786 RETVAL 2327 RETVAL
1787 2328
1788void 2329void
2330throw (Coro::State self, SV *throw = &PL_sv_undef)
2331 PROTOTYPE: $;$
2332 CODE:
2333 SvREFCNT_dec (self->throw);
2334 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2335
2336void
1789api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2337api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2338 PROTOTYPE: $;$
2339 C_ARGS: aTHX_ coro, flags
1790 2340
1791SV * 2341SV *
1792has_stack (Coro::State coro) 2342has_cctx (Coro::State coro)
1793 PROTOTYPE: $ 2343 PROTOTYPE: $
1794 CODE: 2344 CODE:
1795 RETVAL = boolSV (!!coro->cctx); 2345 RETVAL = boolSV (!!coro->cctx);
1796 OUTPUT: 2346 OUTPUT:
1797 RETVAL 2347 RETVAL
… …
1802 CODE: 2352 CODE:
1803 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2353 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1804 OUTPUT: 2354 OUTPUT:
1805 RETVAL 2355 RETVAL
1806 2356
1807IV 2357UV
1808rss (Coro::State coro) 2358rss (Coro::State coro)
1809 PROTOTYPE: $ 2359 PROTOTYPE: $
1810 ALIAS: 2360 ALIAS:
1811 usecount = 1 2361 usecount = 1
1812 CODE: 2362 CODE:
… …
1818 OUTPUT: 2368 OUTPUT:
1819 RETVAL 2369 RETVAL
1820 2370
1821void 2371void
1822force_cctx () 2372force_cctx ()
2373 PROTOTYPE:
1823 CODE: 2374 CODE:
1824 struct coro *coro = SvSTATE (coro_current); 2375 struct coro *coro = SvSTATE (coro_current);
1825 coro->cctx->idle_sp = 0; 2376 coro->cctx->idle_sp = 0;
1826 2377
2378void
2379swap_defsv (Coro::State self)
2380 PROTOTYPE: $
2381 ALIAS:
2382 swap_defav = 1
2383 CODE:
2384 if (!self->slot)
2385 croak ("cannot swap state with coroutine that has no saved state,");
2386 else
2387 {
2388 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2389 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2390
2391 SV *tmp = *src; *src = *dst; *dst = tmp;
2392 }
2393
1827MODULE = Coro::State PACKAGE = Coro 2394MODULE = Coro::State PACKAGE = Coro
1828 2395
1829BOOT: 2396BOOT:
1830{ 2397{
1831 int i; 2398 int i;
1832 2399
2400 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1833 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 2401 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1834 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 2402 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1835 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1836 2403
1837 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 2404 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1838 SvREADONLY_on (coro_current); 2405 SvREADONLY_on (coro_current);
1839 2406
1840 coro_stash = gv_stashpv ("Coro", TRUE); 2407 coro_stash = gv_stashpv ("Coro", TRUE);
… …
1848 2415
1849 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2416 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1850 coro_ready[i] = newAV (); 2417 coro_ready[i] = newAV ();
1851 2418
1852 { 2419 {
1853 SV *sv = perl_get_sv ("Coro::API", TRUE); 2420 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1854 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1855 2421
1856 coroapi.schedule = api_schedule; 2422 coroapi.schedule = api_schedule;
1857 coroapi.cede = api_cede; 2423 coroapi.cede = api_cede;
1858 coroapi.cede_notself = api_cede_notself; 2424 coroapi.cede_notself = api_cede_notself;
1859 coroapi.ready = api_ready; 2425 coroapi.ready = api_ready;
1860 coroapi.is_ready = api_is_ready; 2426 coroapi.is_ready = api_is_ready;
1861 coroapi.nready = &coro_nready; 2427 coroapi.nready = coro_nready;
1862 coroapi.current = coro_current; 2428 coroapi.current = coro_current;
1863 2429
1864 GCoroAPI = &coroapi; 2430 GCoroAPI = &coroapi;
1865 sv_setiv (sv, (IV)&coroapi); 2431 sv_setiv (sv, (IV)&coroapi);
1866 SvREADONLY_on (sv); 2432 SvREADONLY_on (sv);
1867 } 2433 }
1868} 2434}
2435
2436void
2437schedule (...)
2438 CODE:
2439 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
2440
2441void
2442cede (...)
2443 CODE:
2444 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
2445
2446void
2447cede_notself (...)
2448 CODE:
2449 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
1869 2450
1870void 2451void
1871_set_current (SV *current) 2452_set_current (SV *current)
1872 PROTOTYPE: $ 2453 PROTOTYPE: $
1873 CODE: 2454 CODE:
1874 SvREFCNT_dec (SvRV (coro_current)); 2455 SvREFCNT_dec (SvRV (coro_current));
1875 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2456 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2457
2458void
2459_set_readyhook (SV *hook)
2460 PROTOTYPE: $
2461 CODE:
2462 SvREFCNT_dec (coro_readyhook);
2463 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1876 2464
1877int 2465int
1878prio (Coro::State coro, int newprio = 0) 2466prio (Coro::State coro, int newprio = 0)
2467 PROTOTYPE: $;$
1879 ALIAS: 2468 ALIAS:
1880 nice = 1 2469 nice = 1
1881 CODE: 2470 CODE:
1882{ 2471{
1883 RETVAL = coro->prio; 2472 RETVAL = coro->prio;
… …
1898 2487
1899SV * 2488SV *
1900ready (SV *self) 2489ready (SV *self)
1901 PROTOTYPE: $ 2490 PROTOTYPE: $
1902 CODE: 2491 CODE:
1903 RETVAL = boolSV (api_ready (self)); 2492 RETVAL = boolSV (api_ready (aTHX_ self));
1904 OUTPUT: 2493 OUTPUT:
1905 RETVAL 2494 RETVAL
1906 2495
1907int 2496int
1908nready (...) 2497nready (...)
… …
1910 CODE: 2499 CODE:
1911 RETVAL = coro_nready; 2500 RETVAL = coro_nready;
1912 OUTPUT: 2501 OUTPUT:
1913 RETVAL 2502 RETVAL
1914 2503
1915void
1916throw (Coro::State self, SV *throw = &PL_sv_undef)
1917 PROTOTYPE: $;$
1918 CODE:
1919 SvREFCNT_dec (self->throw);
1920 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1921
1922void
1923swap_defsv (Coro::State self)
1924 PROTOTYPE: $
1925 ALIAS:
1926 swap_defav = 1
1927 CODE:
1928 if (!self->slot)
1929 croak ("cannot swap state with coroutine that has no saved state");
1930 else
1931 {
1932 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1933 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1934
1935 SV *tmp = *src; *src = *dst; *dst = tmp;
1936 }
1937
1938# for async_pool speedup 2504# for async_pool speedup
1939void 2505void
1940_pool_1 (SV *cb) 2506_pool_1 (SV *cb)
1941 CODE: 2507 CODE:
1942{ 2508{
… …
1947 AV *invoke_av; 2513 AV *invoke_av;
1948 int i, len; 2514 int i, len;
1949 2515
1950 if (!invoke) 2516 if (!invoke)
1951 { 2517 {
1952 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2518 SV *old = PL_diehook;
2519 PL_diehook = 0;
2520 SvREFCNT_dec (old);
1953 croak ("\3async_pool terminate\2\n"); 2521 croak ("\3async_pool terminate\2\n");
1954 } 2522 }
1955 2523
1956 SvREFCNT_dec (coro->saved_deffh); 2524 SvREFCNT_dec (coro->saved_deffh);
1957 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2525 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1958 2526
1959 hv_store (hv, "desc", sizeof ("desc") - 1, 2527 hv_store (hv, "desc", sizeof ("desc") - 1,
1960 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2528 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1961 2529
1962 invoke_av = (AV *)SvRV (invoke); 2530 invoke_av = (AV *)SvRV (invoke);
… …
1966 2534
1967 if (len > 0) 2535 if (len > 0)
1968 { 2536 {
1969 av_fill (defav, len - 1); 2537 av_fill (defav, len - 1);
1970 for (i = 0; i < len; ++i) 2538 for (i = 0; i < len; ++i)
1971 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2539 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1972 } 2540 }
1973
1974 SvREFCNT_dec (invoke);
1975} 2541}
1976 2542
1977void 2543void
1978_pool_2 (SV *cb) 2544_pool_2 (SV *cb)
1979 CODE: 2545 CODE:
… …
1983 sv_setsv (cb, &PL_sv_undef); 2549 sv_setsv (cb, &PL_sv_undef);
1984 2550
1985 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2551 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1986 coro->saved_deffh = 0; 2552 coro->saved_deffh = 0;
1987 2553
1988 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2554 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1989 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2555 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1990 { 2556 {
1991 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 2557 SV *old = PL_diehook;
2558 PL_diehook = 0;
2559 SvREFCNT_dec (old);
1992 croak ("\3async_pool terminate\2\n"); 2560 croak ("\3async_pool terminate\2\n");
1993 } 2561 }
1994 2562
1995 av_clear (GvAV (PL_defgv)); 2563 av_clear (GvAV (PL_defgv));
1996 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2564 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1997 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2565 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1998 2566
1999 coro->prio = 0; 2567 coro->prio = 0;
2000 2568
2001 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2569 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2002 api_trace (coro_current, 0); 2570 api_trace (aTHX_ coro_current, 0);
2003 2571
2004 av_push (av_async_pool, newSVsv (coro_current)); 2572 av_push (av_async_pool, newSVsv (coro_current));
2005} 2573}
2006 2574
2007 2575
2008MODULE = Coro::State PACKAGE = Coro::AIO 2576MODULE = Coro::State PACKAGE = Coro::AIO
2009 2577
2010SV * 2578void
2011_get_state () 2579_get_state (SV *self)
2580 PROTOTYPE: $
2012 CODE: 2581 PPCODE:
2013{ 2582{
2014 struct io_state *data; 2583 AV *defav = GvAV (PL_defgv);
2015 2584 AV *av = newAV ();
2585 int i;
2016 RETVAL = newSV (sizeof (struct io_state)); 2586 SV *data_sv = newSV (sizeof (struct io_state));
2017 data = (struct io_state *)SvPVX (RETVAL); 2587 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2018 SvCUR_set (RETVAL, sizeof (struct io_state)); 2588 SvCUR_set (data_sv, sizeof (struct io_state));
2019 SvPOK_only (RETVAL); 2589 SvPOK_only (data_sv);
2020 2590
2021 data->errorno = errno; 2591 data->errorno = errno;
2022 data->laststype = PL_laststype; 2592 data->laststype = PL_laststype;
2023 data->laststatval = PL_laststatval; 2593 data->laststatval = PL_laststatval;
2024 data->statcache = PL_statcache; 2594 data->statcache = PL_statcache;
2595
2596 av_extend (av, AvFILLp (defav) + 1 + 1);
2597
2598 for (i = 0; i <= AvFILLp (defav); ++i)
2599 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2600
2601 av_push (av, data_sv);
2602
2603 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2604
2605 api_ready (aTHX_ self);
2025} 2606}
2026 OUTPUT:
2027 RETVAL
2028 2607
2029void 2608void
2030_set_state (char *data_) 2609_set_state (SV *state)
2031 PROTOTYPE: $ 2610 PROTOTYPE: $
2032 CODE: 2611 PPCODE:
2033{ 2612{
2034 struct io_state *data = (void *)data_; 2613 AV *av = (AV *)SvRV (state);
2614 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2615 int i;
2035 2616
2036 errno = data->errorno; 2617 errno = data->errorno;
2037 PL_laststype = data->laststype; 2618 PL_laststype = data->laststype;
2038 PL_laststatval = data->laststatval; 2619 PL_laststatval = data->laststatval;
2039 PL_statcache = data->statcache; 2620 PL_statcache = data->statcache;
2040}
2041 2621
2622 EXTEND (SP, AvFILLp (av));
2623 for (i = 0; i < AvFILLp (av); ++i)
2624 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2625}
2626
2627
2628MODULE = Coro::State PACKAGE = Coro::AnyEvent
2629
2630BOOT:
2631 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2632
2633void
2634_schedule (...)
2635 CODE:
2636{
2637 static int incede;
2638
2639 api_cede_notself (aTHX);
2640
2641 ++incede;
2642 while (coro_nready >= incede && api_cede (aTHX))
2643 ;
2644
2645 sv_setsv (sv_activity, &PL_sv_undef);
2646 if (coro_nready >= incede)
2647 {
2648 PUSHMARK (SP);
2649 PUTBACK;
2650 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2651 SPAGAIN;
2652 }
2653
2654 --incede;
2655}
2656
2657
2658MODULE = Coro::State PACKAGE = PerlIO::cede
2659
2660BOOT:
2661 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2662
2663MODULE = Coro::State PACKAGE = Coro::Semaphore
2664
2665SV *
2666new (SV *klass, SV *count_ = 0)
2667 CODE:
2668{
2669 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2670 AV *av = newAV ();
2671 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2672 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2673}
2674 OUTPUT:
2675 RETVAL
2676
2677SV *
2678count (SV *self)
2679 CODE:
2680 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2681 OUTPUT:
2682 RETVAL
2683
2684void
2685up (SV *self, int adjust = 1)
2686 ALIAS:
2687 adjust = 1
2688 CODE:
2689 coro_semaphore_adjust ((AV *)SvRV (self), ix ? adjust : 1);
2690
2691void
2692down (SV *self)
2693 CODE:
2694 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
2695
2696void
2697try (SV *self)
2698 PPCODE:
2699{
2700 AV *av = (AV *)SvRV (self);
2701 SV *count_sv = AvARRAY (av)[0];
2702 IV count = SvIVX (count_sv);
2703
2704 if (count > 0)
2705 {
2706 --count;
2707 SvIVX (count_sv) = count;
2708 XSRETURN_YES;
2709 }
2710 else
2711 XSRETURN_NO;
2712}
2713
2714void
2715waiters (SV *self)
2716 CODE:
2717{
2718 AV *av = (AV *)SvRV (self);
2719
2720 if (GIMME_V == G_SCALAR)
2721 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2722 else
2723 {
2724 int i;
2725 EXTEND (SP, AvFILLp (av) + 1 - 1);
2726 for (i = 1; i <= AvFILLp (av); ++i)
2727 PUSHs (newSVsv (AvARRAY (av)[i]));
2728 }
2729}
2730

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines