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Comparing Coro/Coro/State.xs (file contents):
Revision 1.168 by root, Thu Sep 27 16:10:48 2007 UTC vs.
Revision 1.270 by root, Fri Nov 14 07:22:11 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 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
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
75/* 5.8.7 */ 101/* 5.8.7 */
76#ifndef SvRV_set 102#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 104#endif
79 105
… …
90# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 117#endif
92 118
93/* 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
94 * portable way as possible. */ 120 * portable way as possible. */
95#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
96#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
97 126
98#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
99 128
100#if __GNUC__ >= 3 129#if __GNUC__ >= 3
101# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
102# define BARRIER __asm__ __volatile__ ("" : : : "memory") 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
103#else 133#else
104# define attribute(x) 134# define attribute(x)
105# define BARRIER 135# define expect(expr,value) (expr)
136# define INLINE static
106#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
107 141
108#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
109 143
110#include "CoroAPI.h" 144#include "CoroAPI.h"
111 145
112#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
147
113static perl_mutex coro_mutex; 148static perl_mutex coro_lock;
114# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
115# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD
152static void *coro_thx;
153# endif
154
116#else 155#else
156
117# define LOCK (void)0 157# define LOCK (void)0
118# define UNLOCK (void)0 158# define UNLOCK (void)0
159
119#endif 160#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
120 166
121/* helper storage struct for Coro::AIO */ 167/* helper storage struct for Coro::AIO */
122struct io_state 168struct io_state
123{ 169{
170 AV *res;
124 int errorno; 171 int errorno;
125 I32 laststype; 172 I32 laststype; /* U16 in 5.10.0 */
126 int laststatval; 173 int laststatval;
127 Stat_t statcache; 174 Stat_t statcache;
128}; 175};
129 176
177static double (*nvtime)(); /* so why doesn't it take void? */
178
179static U32 cctx_gen;
130static size_t coro_stacksize = CORO_STACKSIZE; 180static size_t cctx_stacksize = CORO_STACKSIZE;
131static struct CoroAPI coroapi; 181static struct CoroAPI coroapi;
132static AV *main_mainstack; /* used to differentiate between $main and others */ 182static AV *main_mainstack; /* used to differentiate between $main and others */
133static JMPENV *main_top_env; 183static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 184static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187
188struct transfer_args
189{
190 struct coro *prev, *next;
191};
192
193static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook;
196static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */
136 198
137/* async_pool helper stuff */ 199/* async_pool helper stuff */
138static SV *sv_pool_rss; 200static SV *sv_pool_rss;
139static SV *sv_pool_size; 201static SV *sv_pool_size;
140static AV *av_async_pool; 202static AV *av_async_pool;
203
204/* Coro::AnyEvent */
205static SV *sv_activity;
141 206
142static struct coro_cctx *cctx_first; 207static struct coro_cctx *cctx_first;
143static int cctx_count, cctx_idle; 208static int cctx_count, cctx_idle;
144 209
145enum { 210enum {
… …
163 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 228 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
164 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 229 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
165 JMPENV *top_env; 230 JMPENV *top_env;
166 coro_context cctx; 231 coro_context cctx;
167 232
233 U32 gen;
168#if CORO_USE_VALGRIND 234#if CORO_USE_VALGRIND
169 int valgrind_id; 235 int valgrind_id;
170#endif 236#endif
171 unsigned char flags; 237 unsigned char flags;
172} coro_cctx; 238} coro_cctx;
… …
176 CF_READY = 0x0002, /* coroutine is ready */ 242 CF_READY = 0x0002, /* coroutine is ready */
177 CF_NEW = 0x0004, /* has never been switched to */ 243 CF_NEW = 0x0004, /* has never been switched to */
178 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
179}; 245};
180 246
247/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct {
249 SV *defsv;
250 AV *defav;
251 SV *errsv;
252 SV *irsgv;
253#define VAR(name,type) type name;
254# include "state.h"
255#undef VAR
256} perl_slots;
257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259
181/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
182struct coro { 261struct coro {
183 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the c coroutine allocated to this perl coroutine, if any */
184 coro_cctx *cctx; 263 coro_cctx *cctx;
185 264
265 /* process data */
266 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */
268
186 /* data associated with this coroutine (initial args) */ 269 AV *args; /* data associated with this coroutine (initial args) */
187 AV *args; 270 int refcnt; /* coroutines are refcounted, yes */
188 int refcnt;
189 int save; /* CORO_SAVE flags */
190 int flags; /* CF_ flags */ 271 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */
191 273
192 /* optionally saved, might be zero */ 274 /* statistics */
193 AV *defav; /* @_ */ 275 int usecount; /* number of transfers to this coro */
194 SV *defsv; /* $_ */
195 SV *errsv; /* $@ */
196 GV *deffh; /* default filehandle */
197 SV *irssv; /* $/ */
198 SV *irssv_sv; /* real $/ cache */
199
200#define VAR(name,type) type name;
201# include "state.h"
202#undef VAR
203 276
204 /* coro process data */ 277 /* coro process data */
205 int prio; 278 int prio;
279 SV *throw; /* exception to be thrown */
280
281 /* async_pool */
282 SV *saved_deffh;
206 283
207 /* linked list */ 284 /* linked list */
208 struct coro *next, *prev; 285 struct coro *next, *prev;
209 HV *hv; /* the perl hash associated with this coro, if any */
210}; 286};
211 287
212typedef struct coro *Coro__State; 288typedef struct coro *Coro__State;
213typedef struct coro *Coro__State_or_hashref; 289typedef struct coro *Coro__State_or_hashref;
214 290
… …
221#define PRIO_IDLE -3 297#define PRIO_IDLE -3
222#define PRIO_MIN -4 298#define PRIO_MIN -4
223 299
224/* for Coro.pm */ 300/* for Coro.pm */
225static SV *coro_current; 301static SV *coro_current;
302static SV *coro_readyhook;
226static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
227static int coro_nready;
228static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
229 306
230/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
308
309static SV *
310coro_get_sv (pTHX_ const char *name, int create)
311{
312#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_sv (name, create);
315#endif
316 return get_sv (name, create);
317}
318
319static AV *
320coro_get_av (pTHX_ const char *name, int create)
321{
322#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_av (name, create);
325#endif
326 return get_av (name, create);
327}
328
329static HV *
330coro_get_hv (pTHX_ const char *name, int create)
331{
332#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create);
335#endif
336 return get_hv (name, create);
337}
231 338
232static AV * 339static AV *
233coro_clone_padlist (pTHX_ CV *cv) 340coro_clone_padlist (pTHX_ CV *cv)
234{ 341{
235 AV *padlist = CvPADLIST (cv); 342 AV *padlist = CvPADLIST (cv);
236 AV *newpadlist, *newpad; 343 AV *newpadlist, *newpad;
237 344
238 newpadlist = newAV (); 345 newpadlist = newAV ();
239 AvREAL_off (newpadlist); 346 AvREAL_off (newpadlist);
240#if PERL_VERSION_ATLEAST (5,9,0) 347#if PERL_VERSION_ATLEAST (5,10,0)
241 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
242#else 349#else
243 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
244#endif 351#endif
245 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
246 --AvFILLp (padlist); 353 --AvFILLp (padlist);
247 354
248 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
249 av_store (newpadlist, 1, (SV *)newpad); 356 av_store (newpadlist, 1, (SV *)newpad);
250 357
251 return newpadlist; 358 return newpadlist;
252} 359}
253 360
… …
283 390
284 /* casting is fun. */ 391 /* casting is fun. */
285 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
286 free_padlist (aTHX_ padlist); 393 free_padlist (aTHX_ padlist);
287 394
288 SvREFCNT_dec (av); 395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
289 396
290 return 0; 397 return 0;
291} 398}
292 399
293#define PERL_MAGIC_coro PERL_MAGIC_ext 400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
294 402
295static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 403static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0,
405 coro_cv_free
406};
296 407
297#define CORO_MAGIC(cv) \ 408#define CORO_MAGIC(sv, type) \
298 SvMAGIC (cv) \ 409 SvMAGIC (sv) \
299 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 410 ? SvMAGIC (sv)->mg_type == type \
300 ? SvMAGIC (cv) \ 411 ? SvMAGIC (sv) \
301 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 412 : mg_find (sv, type) \
302 : 0 413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
303 443
304/* the next two functions merely cache the padlists */ 444/* the next two functions merely cache the padlists */
305static void 445static void
306get_padlist (pTHX_ CV *cv) 446get_padlist (pTHX_ CV *cv)
307{ 447{
308 MAGIC *mg = CORO_MAGIC (cv); 448 MAGIC *mg = CORO_MAGIC_cv (cv);
309 AV *av; 449 AV *av;
310 450
311 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
312 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
313 else 453 else
314 { 454 {
315#if CORO_PREFER_PERL_FUNCTIONS 455#if CORO_PREFER_PERL_FUNCTIONS
316 /* this is probably cleaner, but also slower? */ 456 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */
317 CV *cp = Perl_cv_clone (cv); 458 CV *cp = Perl_cv_clone (cv);
318 CvPADLIST (cv) = CvPADLIST (cp); 459 CvPADLIST (cv) = CvPADLIST (cp);
319 CvPADLIST (cp) = 0; 460 CvPADLIST (cp) = 0;
320 SvREFCNT_dec (cp); 461 SvREFCNT_dec (cp);
321#else 462#else
… …
325} 466}
326 467
327static void 468static void
328put_padlist (pTHX_ CV *cv) 469put_padlist (pTHX_ CV *cv)
329{ 470{
330 MAGIC *mg = CORO_MAGIC (cv); 471 MAGIC *mg = CORO_MAGIC_cv (cv);
331 AV *av; 472 AV *av;
332 473
333 if (!mg) 474 if (expect_false (!mg))
334 { 475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
335 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
336 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
337 mg->mg_virtual = &vtbl_coro;
338 mg->mg_obj = (SV *)newAV ();
339 }
340 476
341 av = (AV *)mg->mg_obj; 477 av = (AV *)mg->mg_obj;
342 478
343 if (AvFILLp (av) >= AvMAX (av)) 479 if (expect_false (AvFILLp (av) >= AvMAX (av)))
344 av_extend (av, AvMAX (av) + 1); 480 av_extend (av, AvMAX (av) + 1);
345 481
346 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
347} 483}
348 484
349/** load & save, init *******************************************************/ 485/** load & save, init *******************************************************/
350
351#define SB do {
352#define SE } while (0)
353
354#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
355 486
356static void 487static void
357load_perl (pTHX_ Coro__State c) 488load_perl (pTHX_ Coro__State c)
358{ 489{
490 perl_slots *slot = c->slot;
491 c->slot = 0;
492
493 PL_mainstack = c->mainstack;
494
495 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv;
499
359#define VAR(name,type) PL_ ## name = c->name; 500 #define VAR(name,type) PL_ ## name = slot->name;
360# include "state.h" 501 # include "state.h"
361#undef VAR 502 #undef VAR
362
363 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
364 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
365 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
366 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
367
368 if (c->irssv)
369 {
370 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
371 {
372 SvREFCNT_dec (c->irssv);
373 c->irssv = 0;
374 }
375 else
376 {
377 REPLACE_SV (PL_rs, c->irssv);
378 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
379 sv_setsv (c->irssv_sv, PL_rs);
380 }
381 }
382 503
383 { 504 {
384 dSP; 505 dSP;
506
385 CV *cv; 507 CV *cv;
386 508
387 /* now do the ugly restore mess */ 509 /* now do the ugly restore mess */
388 while ((cv = (CV *)POPs)) 510 while (expect_true (cv = (CV *)POPs))
389 { 511 {
390 put_padlist (aTHX_ cv); /* mark this padlist as available */ 512 put_padlist (aTHX_ cv); /* mark this padlist as available */
391 CvDEPTH (cv) = PTR2IV (POPs); 513 CvDEPTH (cv) = PTR2IV (POPs);
392 CvPADLIST (cv) = (AV *)POPs; 514 CvPADLIST (cv) = (AV *)POPs;
393 } 515 }
… …
412 534
413 XPUSHs (Nullsv); 535 XPUSHs (Nullsv);
414 /* this loop was inspired by pp_caller */ 536 /* this loop was inspired by pp_caller */
415 for (;;) 537 for (;;)
416 { 538 {
417 while (cxix >= 0) 539 while (expect_true (cxix >= 0))
418 { 540 {
419 PERL_CONTEXT *cx = &ccstk[cxix--]; 541 PERL_CONTEXT *cx = &ccstk[cxix--];
420 542
421 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 543 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
422 { 544 {
423 CV *cv = cx->blk_sub.cv; 545 CV *cv = cx->blk_sub.cv;
424 546
425 if (CvDEPTH (cv)) 547 if (expect_true (CvDEPTH (cv)))
426 { 548 {
427 EXTEND (SP, 3); 549 EXTEND (SP, 3);
428 PUSHs ((SV *)CvPADLIST (cv)); 550 PUSHs ((SV *)CvPADLIST (cv));
429 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 551 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
430 PUSHs ((SV *)cv); 552 PUSHs ((SV *)cv);
431 553
432 CvDEPTH (cv) = 0; 554 CvDEPTH (cv) = 0;
433 get_padlist (aTHX_ cv); 555 get_padlist (aTHX_ cv);
434 } 556 }
435 } 557 }
436 } 558 }
437 559
438 if (top_si->si_type == PERLSI_MAIN) 560 if (expect_true (top_si->si_type == PERLSI_MAIN))
439 break; 561 break;
440 562
441 top_si = top_si->si_prev; 563 top_si = top_si->si_prev;
442 ccstk = top_si->si_cxstack; 564 ccstk = top_si->si_cxstack;
443 cxix = top_si->si_cxix; 565 cxix = top_si->si_cxix;
444 } 566 }
445 567
446 PUTBACK; 568 PUTBACK;
447 } 569 }
448 570
449 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 571 /* allocate some space on the context stack for our purposes */
450 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 572 /* we manually unroll here, as usually 2 slots is enough */
451 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 573 if (SLOT_COUNT >= 1) CXINC;
452 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 574 if (SLOT_COUNT >= 2) CXINC;
453 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 575 if (SLOT_COUNT >= 3) CXINC;
576 {
577 int i;
578 for (i = 3; i < SLOT_COUNT; ++i)
579 CXINC;
580 }
581 cxstack_ix -= SLOT_COUNT; /* undo allocation */
454 582
583 c->mainstack = PL_mainstack;
584
585 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587
588 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV;
590 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv);
592
455#define VAR(name,type)c->name = PL_ ## name; 593 #define VAR(name,type) slot->name = PL_ ## name;
456# include "state.h" 594 # include "state.h"
457#undef VAR 595 #undef VAR
596 }
458} 597}
459 598
460/* 599/*
461 * allocate various perl stacks. This is an exact copy 600 * allocate various perl stacks. This is an exact copy
462 * of perl.c:init_stacks, except that it uses less memory 601 * of perl.c:init_stacks, except that it uses less memory
… …
467# define coro_init_stacks init_stacks 606# define coro_init_stacks init_stacks
468#else 607#else
469static void 608static void
470coro_init_stacks (pTHX) 609coro_init_stacks (pTHX)
471{ 610{
472 PL_curstackinfo = new_stackinfo(64, 6); 611 PL_curstackinfo = new_stackinfo(32, 8);
473 PL_curstackinfo->si_type = PERLSI_MAIN; 612 PL_curstackinfo->si_type = PERLSI_MAIN;
474 PL_curstack = PL_curstackinfo->si_stack; 613 PL_curstack = PL_curstackinfo->si_stack;
475 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 614 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
476 615
477 PL_stack_base = AvARRAY(PL_curstack); 616 PL_stack_base = AvARRAY(PL_curstack);
478 PL_stack_sp = PL_stack_base; 617 PL_stack_sp = PL_stack_base;
479 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 618 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
480 619
481 New(50,PL_tmps_stack,64,SV*); 620 New(50,PL_tmps_stack,32,SV*);
482 PL_tmps_floor = -1; 621 PL_tmps_floor = -1;
483 PL_tmps_ix = -1; 622 PL_tmps_ix = -1;
484 PL_tmps_max = 64; 623 PL_tmps_max = 32;
485 624
486 New(54,PL_markstack,16,I32); 625 New(54,PL_markstack,16,I32);
487 PL_markstack_ptr = PL_markstack; 626 PL_markstack_ptr = PL_markstack;
488 PL_markstack_max = PL_markstack + 16; 627 PL_markstack_max = PL_markstack + 16;
489 628
490#ifdef SET_MARK_OFFSET 629#ifdef SET_MARK_OFFSET
491 SET_MARK_OFFSET; 630 SET_MARK_OFFSET;
492#endif 631#endif
493 632
494 New(54,PL_scopestack,16,I32); 633 New(54,PL_scopestack,8,I32);
495 PL_scopestack_ix = 0; 634 PL_scopestack_ix = 0;
496 PL_scopestack_max = 16; 635 PL_scopestack_max = 8;
497 636
498 New(54,PL_savestack,64,ANY); 637 New(54,PL_savestack,24,ANY);
499 PL_savestack_ix = 0; 638 PL_savestack_ix = 0;
500 PL_savestack_max = 64; 639 PL_savestack_max = 24;
501 640
502#if !PERL_VERSION_ATLEAST (5,9,0) 641#if !PERL_VERSION_ATLEAST (5,10,0)
503 New(54,PL_retstack,4,OP*); 642 New(54,PL_retstack,4,OP*);
504 PL_retstack_ix = 0; 643 PL_retstack_ix = 0;
505 PL_retstack_max = 4; 644 PL_retstack_max = 4;
506#endif 645#endif
507} 646}
… …
509 648
510/* 649/*
511 * destroy the stacks, the callchain etc... 650 * destroy the stacks, the callchain etc...
512 */ 651 */
513static void 652static void
514coro_destroy_stacks (pTHX) 653coro_destruct_stacks (pTHX)
515{ 654{
516 if (!IN_DESTRUCT)
517 {
518 /* restore all saved variables and stuff */
519 LEAVE_SCOPE (0);
520 assert (PL_tmps_floor == -1);
521
522 /* free all temporaries */
523 FREETMPS;
524 assert (PL_tmps_ix == -1);
525
526 /* unwind all extra stacks */
527 POPSTACK_TO (PL_mainstack);
528
529 /* unwind main stack */
530 dounwind (-1);
531 }
532
533 while (PL_curstackinfo->si_next) 655 while (PL_curstackinfo->si_next)
534 PL_curstackinfo = PL_curstackinfo->si_next; 656 PL_curstackinfo = PL_curstackinfo->si_next;
535 657
536 while (PL_curstackinfo) 658 while (PL_curstackinfo)
537 { 659 {
… …
547 669
548 Safefree (PL_tmps_stack); 670 Safefree (PL_tmps_stack);
549 Safefree (PL_markstack); 671 Safefree (PL_markstack);
550 Safefree (PL_scopestack); 672 Safefree (PL_scopestack);
551 Safefree (PL_savestack); 673 Safefree (PL_savestack);
552#if !PERL_VERSION_ATLEAST (5,9,0) 674#if !PERL_VERSION_ATLEAST (5,10,0)
553 Safefree (PL_retstack); 675 Safefree (PL_retstack);
554#endif 676#endif
555} 677}
556 678
557static size_t 679static size_t
558coro_rss (struct coro *coro) 680coro_rss (pTHX_ struct coro *coro)
559{ 681{
560 size_t rss = sizeof (coro); 682 size_t rss = sizeof (*coro);
561 683
562 if (coro->mainstack) 684 if (coro->mainstack)
563 { 685 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
564 if (coro->flags & CF_RUNNING) 689 if (coro->flags & CF_RUNNING)
565 { 690 {
691 slot = &tmp_slot;
692
566 #define VAR(name,type)coro->name = PL_ ## name; 693 #define VAR(name,type) slot->name = PL_ ## name;
567 # include "state.h" 694 # include "state.h"
568 #undef VAR 695 #undef VAR
569 } 696 }
697 else
698 slot = coro->slot;
570 699
700 if (slot)
701 {
571 rss += sizeof (coro->curstackinfo); 702 rss += sizeof (slot->curstackinfo);
572 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
573 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
574 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
575 rss += coro->tmps_max * sizeof (SV *); 705 rss += slot->tmps_max * sizeof (SV *);
576 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); 706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
577 rss += coro->scopestack_max * sizeof (I32); 707 rss += slot->scopestack_max * sizeof (I32);
578 rss += coro->savestack_max * sizeof (ANY); 708 rss += slot->savestack_max * sizeof (ANY);
579 709
580#if !PERL_VERSION_ATLEAST (5,9,0) 710#if !PERL_VERSION_ATLEAST (5,10,0)
581 rss += coro->retstack_max * sizeof (OP *); 711 rss += slot->retstack_max * sizeof (OP *);
582#endif 712#endif
713 }
583 } 714 }
584 715
585 return rss; 716 return rss;
586} 717}
587 718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_slf calling us */
722#define SLF_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_slf */
724#define SLF_TAIL slf_tail (aTHX)
725
726INLINE void
727slf_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744}
745
588/** coroutine stack handling ************************************************/ 746/** coroutine stack handling ************************************************/
589 747
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
749static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
750static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
751
752/* apparently < 5.8.8 */
753#ifndef MgPV_nolen_const
754#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
755 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
756 (const char*)(mg)->mg_ptr)
757#endif
758
759/*
760 * This overrides the default magic get method of %SIG elements.
761 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
762 * and instead of tryign to save and restore the hash elements, we just provide
763 * readback here.
764 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
765 * not expecting this to actually change the hook. This is a potential problem
766 * when a schedule happens then, but we ignore this.
767 */
768static int
769coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
770{
771 const char *s = MgPV_nolen_const (mg);
772
773 if (*s == '_')
774 {
775 SV **svp = 0;
776
777 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
778 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
779
780 if (svp)
781 {
782 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
783 return 0;
784 }
785 }
786
787 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
788}
789
790static int
791coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
792{
793 const char *s = MgPV_nolen_const (mg);
794
795 if (*s == '_')
796 {
797 SV **svp = 0;
798
799 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
800 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
801
802 if (svp)
803 {
804 SV *old = *svp;
805 *svp = 0;
806 SvREFCNT_dec (old);
807 return 0;
808 }
809 }
810
811 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
812}
813
814static int
815coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
816{
817 const char *s = MgPV_nolen_const (mg);
818
819 if (*s == '_')
820 {
821 SV **svp = 0;
822
823 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
824 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
825
826 if (svp)
827 {
828 SV *old = *svp;
829 *svp = newSVsv (sv);
830 SvREFCNT_dec (old);
831 return 0;
832 }
833 }
834
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836}
837
590static void 838static void
591setup_coro (pTHX_ struct coro *coro) 839coro_setup (pTHX_ struct coro *coro)
592{ 840{
593 /* 841 /*
594 * emulate part of the perl startup here. 842 * emulate part of the perl startup here.
595 */ 843 */
596 coro_init_stacks (aTHX); 844 coro_init_stacks (aTHX);
597 845
846 PL_runops = RUNOPS_DEFAULT;
598 PL_curcop = &PL_compiling; 847 PL_curcop = &PL_compiling;
599 PL_in_eval = EVAL_NULL; 848 PL_in_eval = EVAL_NULL;
600 PL_comppad = 0; 849 PL_comppad = 0;
601 PL_curpm = 0; 850 PL_curpm = 0;
851 PL_curpad = 0;
602 PL_localizing = 0; 852 PL_localizing = 0;
603 PL_dirty = 0; 853 PL_dirty = 0;
604 PL_restartop = 0; 854 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0;
857#endif
858
859 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
862
863 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
867 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
605 869
606 { 870 {
607 dSP; 871 dSP;
608 LOGOP myop; 872 UNOP myop;
609 873
610 SvREFCNT_dec (GvAV (PL_defgv));
611 GvAV (PL_defgv) = coro->args; coro->args = 0;
612
613 Zero (&myop, 1, LOGOP); 874 Zero (&myop, 1, UNOP);
614 myop.op_next = Nullop; 875 myop.op_next = Nullop;
615 myop.op_flags = OPf_WANT_VOID; 876 myop.op_flags = OPf_WANT_VOID;
616 877
617 PUSHMARK (SP); 878 PUSHMARK (SP);
618 XPUSHs (av_shift (GvAV (PL_defgv))); 879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
619 PUTBACK; 880 PUTBACK;
620 PL_op = (OP *)&myop; 881 PL_op = (OP *)&myop;
621 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
622 SPAGAIN; 883 SPAGAIN;
623 } 884 }
624 885
625 ENTER; /* necessary e.g. for dounwind */ 886 /* this newly created coroutine might be run on an existing cctx which most
887 * likely was suspended in set_stacklevel, called from pp_set_stacklevel,
888 * so we have to emulate entering pp_set_stacklevel here.
889 */
890 SLF_HEAD;
626} 891}
627 892
628static void 893static void
894coro_destruct (pTHX_ struct coro *coro)
895{
896 if (!IN_DESTRUCT)
897 {
898 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0);
900 assert (PL_tmps_floor == -1);
901
902 /* free all temporaries */
903 FREETMPS;
904 assert (PL_tmps_ix == -1);
905
906 /* unwind all extra stacks */
907 POPSTACK_TO (PL_mainstack);
908
909 /* unwind main stack */
910 dounwind (-1);
911 }
912
913 SvREFCNT_dec (GvSV (PL_defgv));
914 SvREFCNT_dec (GvAV (PL_defgv));
915 SvREFCNT_dec (GvSV (PL_errgv));
916 SvREFCNT_dec (PL_defoutgv);
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922
923 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw);
925
926 coro_destruct_stacks (aTHX);
927}
928
929INLINE void
629free_coro_mortal (pTHX) 930free_coro_mortal (pTHX)
630{ 931{
631 if (coro_mortal) 932 if (expect_true (coro_mortal))
632 { 933 {
633 SvREFCNT_dec (coro_mortal); 934 SvREFCNT_dec (coro_mortal);
634 coro_mortal = 0; 935 coro_mortal = 0;
635 } 936 }
636} 937}
637 938
638static int 939static int
639runops_coro (pTHX) 940runops_trace (pTHX)
640{ 941{
641 COP *oldcop = 0; 942 COP *oldcop = 0;
642 int oldcxix = -2; 943 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
643 946
644 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
645 { 948 {
646 PERL_ASYNC_CHECK (); 949 PERL_ASYNC_CHECK ();
647 950
648 if (PL_op->op_type == OP_LEAVESUB) 951 if (cctx->flags & CC_TRACE_ALL)
649 { 952 {
650 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
651 SV **bot, **top;
652 AV *av = newAV (); /* return values */
653 runops_proc_t old_runops = PL_runops;
654 dSP;
655 ENTER;
656 SAVETMPS;
657 EXTEND (SP, 3);
658 PL_runops = RUNOPS_DEFAULT;
659
660 GV *gv = CvGV (cx->blk_sub.cv);
661 SV *fullname = sv_2mortal (newSV (0));
662 if (isGV (gv))
663 gv_efullname3 (fullname, gv, 0);
664
665 bot = PL_stack_base + cx->blk_oldsp + 1;
666 top = cx->blk_gimme == G_ARRAY ? SP + 1
667 : cx->blk_gimme == G_SCALAR ? bot + 1
668 : bot;
669
670 while (bot < top)
671 av_push (av, SvREFCNT_inc (*bot++));
672
673 PUSHMARK (SP);
674 PUSHs (&PL_sv_no);
675 PUSHs (fullname);
676 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
677 PUTBACK;
678 call_pv ("Coro::_do_trace_sub", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
679 SPAGAIN;
680
681 FREETMPS;
682 LEAVE;
683 PL_runops = old_runops;
684 }
685
686 if (oldcop != PL_curcop)
687 {
688 oldcop = PL_curcop;
689
690 if (PL_curcop != &PL_compiling)
691 { 954 {
692 runops_proc_t old_runops = PL_runops; 955 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top;
957 AV *av = newAV (); /* return values */
958 SV **cb;
693 dSP; 959 dSP;
960
961 GV *gv = CvGV (cx->blk_sub.cv);
962 SV *fullname = sv_2mortal (newSV (0));
963 if (isGV (gv))
964 gv_efullname3 (fullname, gv, 0);
965
966 bot = PL_stack_base + cx->blk_oldsp + 1;
967 top = cx->blk_gimme == G_ARRAY ? SP + 1
968 : cx->blk_gimme == G_SCALAR ? bot + 1
969 : bot;
970
971 av_extend (av, top - bot);
972 while (bot < top)
973 av_push (av, SvREFCNT_inc_NN (*bot++));
974
975 PL_runops = RUNOPS_DEFAULT;
694 ENTER; 976 ENTER;
695 SAVETMPS; 977 SAVETMPS;
696 EXTEND (SP, 3); 978 EXTEND (SP, 3);
697 PL_runops = RUNOPS_DEFAULT;
698
699 if (oldcxix != cxstack_ix)
700 {
701 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
702
703 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
704 {
705 GV *gv = CvGV (cx->blk_sub.cv);
706 SV *fullname = sv_2mortal (newSV (0));
707 if (isGV (gv))
708 gv_efullname3 (fullname, gv, 0);
709
710 PUSHMARK (SP);
711 PUSHs (&PL_sv_yes);
712 PUSHs (fullname);
713 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
714 PUTBACK;
715 call_pv ("Coro::_do_trace_sub", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
716 SPAGAIN;
717 }
718
719 oldcxix = cxstack_ix;
720 }
721
722 if (0) {
723 PUSHMARK (SP); 979 PUSHMARK (SP);
724 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 980 PUSHs (&PL_sv_no);
725 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 981 PUSHs (fullname);
982 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
726 PUTBACK; 983 PUTBACK;
984 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
727 call_pv ("Coro::_do_trace_line", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 985 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
728 SPAGAIN; 986 SPAGAIN;
729 }
730
731 FREETMPS; 987 FREETMPS;
732 LEAVE; 988 LEAVE;
733 PL_runops = old_runops; 989 PL_runops = runops_trace;
990 }
991
992 if (oldcop != PL_curcop)
993 {
994 oldcop = PL_curcop;
995
996 if (PL_curcop != &PL_compiling)
997 {
998 SV **cb;
999
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
1001 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0));
1010
1011 if (isGV (gv))
1012 gv_efullname3 (fullname, gv, 0);
1013
1014 PL_runops = RUNOPS_DEFAULT;
1015 ENTER;
1016 SAVETMPS;
1017 EXTEND (SP, 3);
1018 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN;
1026 FREETMPS;
1027 LEAVE;
1028 PL_runops = runops_trace;
1029 }
1030
1031 oldcxix = cxstack_ix;
1032 }
1033
1034 if (cctx->flags & CC_TRACE_LINE)
1035 {
1036 dSP;
1037
1038 PL_runops = RUNOPS_DEFAULT;
1039 ENTER;
1040 SAVETMPS;
1041 EXTEND (SP, 3);
1042 PL_runops = RUNOPS_DEFAULT;
1043 PUSHMARK (SP);
1044 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1045 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1046 PUTBACK;
1047 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1048 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1049 SPAGAIN;
1050 FREETMPS;
1051 LEAVE;
1052 PL_runops = runops_trace;
1053 }
1054 }
734 } 1055 }
735 } 1056 }
736 } 1057 }
737 1058
738 TAINT_NOT; 1059 TAINT_NOT;
739 return 0; 1060 return 0;
1061}
1062
1063static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
1065{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0;
740} 1068}
741 1069
742/* inject a fake call to Coro::State::_cctx_init into the execution */ 1070/* inject a fake call to Coro::State::_cctx_init into the execution */
743/* _cctx_init should be careful, as it could be called at almost any time */ 1071/* _cctx_init should be careful, as it could be called at almost any time */
744/* during execution of a perl program */ 1072/* during execution of a perl program */
1073/* also initialises PL_top_env */
745static void NOINLINE 1074static void NOINLINE
746prepare_cctx (pTHX_ coro_cctx *cctx) 1075cctx_prepare (pTHX_ coro_cctx *cctx)
747{ 1076{
748 dSP; 1077 dSP;
749 LOGOP myop; 1078 UNOP myop;
750 1079
751 PL_top_env = &PL_start_env; 1080 PL_top_env = &PL_start_env;
752 1081
753 if (cctx->flags & CC_TRACE) 1082 if (cctx->flags & CC_TRACE)
754 PL_runops = runops_coro; 1083 PL_runops = runops_trace;
755 1084
756 Zero (&myop, 1, LOGOP); 1085 Zero (&myop, 1, UNOP);
757 myop.op_next = PL_op; 1086 myop.op_next = PL_op;
758 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
759 1088
760 PUSHMARK (SP); 1089 PUSHMARK (SP);
761 EXTEND (SP, 2); 1090 EXTEND (SP, 2);
762 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1091 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
763 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
764 PUTBACK; 1093 PUTBACK;
765 PL_op = (OP *)&myop; 1094 PL_op = (OP *)&myop;
766 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
767 SPAGAIN; 1096 SPAGAIN;
768} 1097}
769 1098
1099/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void
1101transfer_tail (pTHX)
1102{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118}
1119
770/* 1120/*
771 * this is a _very_ stripped down perl interpreter ;) 1121 * this is a _very_ stripped down perl interpreter ;)
772 */ 1122 */
773static void 1123static void
774coro_run (void *arg) 1124cctx_run (void *arg)
775{ 1125{
1126#ifdef USE_ITHREADS
1127# if CORO_PTHREAD
1128 PERL_SET_CONTEXT (coro_thx);
1129# endif
1130#endif
1131 {
776 dTHX; 1132 dTHX;
777 1133
778 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1134 /* we are the alternative tail to pp_set_stacklevel */
779 UNLOCK; 1135 /* so do the same things here */
1136 SLF_TAIL;
780 1137
781 /* we now skip the entersub that lead to transfer() */ 1138 /* we now skip the op that did lead to transfer() */
782 PL_op = PL_op->op_next; 1139 PL_op = PL_op->op_next;
783 1140
784 /* inject a fake subroutine call to cctx_init */ 1141 /* inject a fake subroutine call to cctx_init */
785 prepare_cctx (aTHX_ (coro_cctx *)arg); 1142 cctx_prepare (aTHX_ (coro_cctx *)arg);
786 1143
1144 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX);
1146
787 /* somebody or something will hit me for both perl_run and PL_restartop */ 1147 /* somebody or something will hit me for both perl_run and PL_restartop */
788 PL_restartop = PL_op; 1148 PL_restartop = PL_op;
789 perl_run (PL_curinterp); 1149 perl_run (PL_curinterp);
790 1150
791 /* 1151 /*
792 * If perl-run returns we assume exit() was being called or the coro 1152 * If perl-run returns we assume exit() was being called or the coro
793 * fell off the end, which seems to be the only valid (non-bug) 1153 * fell off the end, which seems to be the only valid (non-bug)
794 * reason for perl_run to return. We try to exit by jumping to the 1154 * reason for perl_run to return. We try to exit by jumping to the
795 * bootstrap-time "top" top_env, as we cannot restore the "main" 1155 * bootstrap-time "top" top_env, as we cannot restore the "main"
796 * coroutine as Coro has no such concept 1156 * coroutine as Coro has no such concept
797 */ 1157 */
798 PL_top_env = main_top_env; 1158 PL_top_env = main_top_env;
799 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 }
800} 1161}
801 1162
802static coro_cctx * 1163static coro_cctx *
803cctx_new () 1164cctx_new ()
804{ 1165{
805 coro_cctx *cctx; 1166 coro_cctx *cctx;
1167
1168 ++cctx_count;
1169 New (0, cctx, 1, coro_cctx);
1170
1171 cctx->gen = cctx_gen;
1172 cctx->flags = 0;
1173 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1174
1175 return cctx;
1176}
1177
1178/* create a new cctx only suitable as source */
1179static coro_cctx *
1180cctx_new_empty ()
1181{
1182 coro_cctx *cctx = cctx_new ();
1183
1184 cctx->sptr = 0;
1185 coro_create (&cctx->cctx, 0, 0, 0, 0);
1186
1187 return cctx;
1188}
1189
1190/* create a new cctx suitable as destination/running a perl interpreter */
1191static coro_cctx *
1192cctx_new_run ()
1193{
1194 coro_cctx *cctx = cctx_new ();
806 void *stack_start; 1195 void *stack_start;
807 size_t stack_size; 1196 size_t stack_size;
808 1197
809 ++cctx_count;
810
811 Newz (0, cctx, 1, coro_cctx);
812
813#if HAVE_MMAP 1198#if HAVE_MMAP
814
815 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1199 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
816 /* mmap supposedly does allocate-on-write for us */ 1200 /* mmap supposedly does allocate-on-write for us */
817 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1201 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
818 1202
819 if (cctx->sptr != (void *)-1) 1203 if (cctx->sptr != (void *)-1)
820 { 1204 {
821# if CORO_STACKGUARD 1205 #if CORO_STACKGUARD
822 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1206 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
823# endif 1207 #endif
824 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1208 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
825 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1209 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
826 cctx->flags |= CC_MAPPED; 1210 cctx->flags |= CC_MAPPED;
827 } 1211 }
828 else 1212 else
829#endif 1213#endif
830 { 1214 {
831 cctx->ssize = coro_stacksize * (long)sizeof (long); 1215 cctx->ssize = cctx_stacksize * (long)sizeof (long);
832 New (0, cctx->sptr, coro_stacksize, long); 1216 New (0, cctx->sptr, cctx_stacksize, long);
833 1217
834 if (!cctx->sptr) 1218 if (!cctx->sptr)
835 { 1219 {
836 perror ("FATAL: unable to allocate stack for coroutine"); 1220 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
837 _exit (EXIT_FAILURE); 1221 _exit (EXIT_FAILURE);
838 } 1222 }
839 1223
840 stack_start = cctx->sptr; 1224 stack_start = cctx->sptr;
841 stack_size = cctx->ssize; 1225 stack_size = cctx->ssize;
842 } 1226 }
843 1227
844 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1228 #if CORO_USE_VALGRIND
1229 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1230 #endif
1231
845 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1232 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
846 1233
847 return cctx; 1234 return cctx;
848} 1235}
849 1236
850static void 1237static void
… …
852{ 1239{
853 if (!cctx) 1240 if (!cctx)
854 return; 1241 return;
855 1242
856 --cctx_count; 1243 --cctx_count;
1244 coro_destroy (&cctx->cctx);
857 1245
1246 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr)
1248 {
858#if CORO_USE_VALGRIND 1249 #if CORO_USE_VALGRIND
859 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1250 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
860#endif 1251 #endif
861 1252
862#if HAVE_MMAP 1253#if HAVE_MMAP
863 if (cctx->flags & CC_MAPPED) 1254 if (cctx->flags & CC_MAPPED)
864 munmap (cctx->sptr, cctx->ssize); 1255 munmap (cctx->sptr, cctx->ssize);
865 else 1256 else
866#endif 1257#endif
867 Safefree (cctx->sptr); 1258 Safefree (cctx->sptr);
1259 }
868 1260
869 Safefree (cctx); 1261 Safefree (cctx);
870} 1262}
1263
1264/* wether this cctx should be destructed */
1265#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
871 1266
872static coro_cctx * 1267static coro_cctx *
873cctx_get (pTHX) 1268cctx_get (pTHX)
874{ 1269{
875 while (cctx_first) 1270 while (expect_true (cctx_first))
876 { 1271 {
877 coro_cctx *cctx = cctx_first; 1272 coro_cctx *cctx = cctx_first;
878 cctx_first = cctx->next; 1273 cctx_first = cctx->next;
879 --cctx_idle; 1274 --cctx_idle;
880 1275
881 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1276 if (expect_true (!CCTX_EXPIRED (cctx)))
882 return cctx; 1277 return cctx;
883 1278
884 cctx_destroy (cctx); 1279 cctx_destroy (cctx);
885 } 1280 }
886 1281
887 return cctx_new (); 1282 return cctx_new_run ();
888} 1283}
889 1284
890static void 1285static void
891cctx_put (coro_cctx *cctx) 1286cctx_put (coro_cctx *cctx)
892{ 1287{
1288 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1289
893 /* free another cctx if overlimit */ 1290 /* free another cctx if overlimit */
894 if (cctx_idle >= MAX_IDLE_CCTX) 1291 if (expect_false (cctx_idle >= cctx_max_idle))
895 { 1292 {
896 coro_cctx *first = cctx_first; 1293 coro_cctx *first = cctx_first;
897 cctx_first = first->next; 1294 cctx_first = first->next;
898 --cctx_idle; 1295 --cctx_idle;
899 1296
… …
905 cctx_first = cctx; 1302 cctx_first = cctx;
906} 1303}
907 1304
908/** coroutine switching *****************************************************/ 1305/** coroutine switching *****************************************************/
909 1306
910/* never call directly, always through the coro_state_transfer global variable */ 1307static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{
1310 if (expect_true (prev != next))
1311 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1314
1315 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1317
1318 if (expect_false (next->flags & CF_DESTROYED))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1320
1321#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1324#endif
1325 }
1326}
1327
1328/* always use the TRANSFER macro */
911static void NOINLINE 1329static void NOINLINE
912transfer (pTHX_ struct coro *prev, struct coro *next) 1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
913{ 1331{
914 dSTACKLEVEL; 1332 dSTACKLEVEL;
915 1333
916 /* sometimes transfer is only called to set idle_sp */ 1334 /* sometimes transfer is only called to set idle_sp */
917 if (!next) 1335 if (expect_false (!next))
918 { 1336 {
919 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1337 ((coro_cctx *)prev)->idle_sp = stacklevel;
920 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
921 } 1339 }
922 else if (prev != next) 1340 else if (expect_true (prev != next))
923 { 1341 {
924 coro_cctx *prev__cctx; 1342 coro_cctx *prev__cctx;
925 1343
926 if (prev->flags & CF_NEW) 1344 if (expect_false (prev->flags & CF_NEW))
927 { 1345 {
928 /* create a new empty context */ 1346 /* create a new empty/source context */
929 Newz (0, prev->cctx, 1, coro_cctx); 1347 prev->cctx = cctx_new_empty ();
930 prev->flags &= ~CF_NEW; 1348 prev->flags &= ~CF_NEW;
931 prev->flags |= CF_RUNNING; 1349 prev->flags |= CF_RUNNING;
932 } 1350 }
933 1351
934 /*TODO: must not croak here */
935 if (!prev->flags & CF_RUNNING)
936 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
937
938 if (next->flags & CF_RUNNING)
939 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
940
941 if (next->flags & CF_DESTROYED)
942 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
943
944 prev->flags &= ~CF_RUNNING; 1352 prev->flags &= ~CF_RUNNING;
945 next->flags |= CF_RUNNING; 1353 next->flags |= CF_RUNNING;
946 1354
947 LOCK; 1355 LOCK;
948 1356
1357 /* first get rid of the old state */
1358 save_perl (aTHX_ prev);
1359
949 if (next->flags & CF_NEW) 1360 if (expect_false (next->flags & CF_NEW))
950 { 1361 {
951 /* need to start coroutine */ 1362 /* need to start coroutine */
952 next->flags &= ~CF_NEW; 1363 next->flags &= ~CF_NEW;
953 /* first get rid of the old state */
954 save_perl (aTHX_ prev);
955 /* setup coroutine call */ 1364 /* setup coroutine call */
956 setup_coro (aTHX_ next); 1365 coro_setup (aTHX_ next);
957 } 1366 }
958 else 1367 else
1368 load_perl (aTHX_ next);
1369
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */
1373 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel
1375 && !(prev__cctx->flags & CC_TRACE)
1376 && !force_cctx
1377 ))
959 { 1378 {
960 /* coroutine already started */
961 save_perl (aTHX_ prev);
962 load_perl (aTHX_ next);
963 }
964
965 prev__cctx = prev->cctx;
966
967 /* possibly "free" the cctx */
968 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
969 {
970 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
971 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1380 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
972 1381
973 prev->cctx = 0; 1382 prev->cctx = 0;
1383
1384 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1385 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1387 if (!next->cctx)
1388 next->cctx = cctx_get (aTHX);
974 1389
975 cctx_put (prev__cctx); 1390 cctx_put (prev__cctx);
976 } 1391 }
977 1392
1393 ++next->usecount;
1394
978 if (!next->cctx) 1395 if (expect_true (!next->cctx))
979 next->cctx = cctx_get (aTHX); 1396 next->cctx = cctx_get (aTHX);
980 1397
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1399 transfer_next = next;
1400
981 if (prev__cctx != next->cctx) 1401 if (expect_false (prev__cctx != next->cctx))
982 { 1402 {
983 prev__cctx->top_env = PL_top_env; 1403 prev__cctx->top_env = PL_top_env;
984 PL_top_env = next->cctx->top_env; 1404 PL_top_env = next->cctx->top_env;
985 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
986 } 1406 }
987 1407
988 free_coro_mortal (aTHX); 1408 transfer_tail (aTHX);
989 UNLOCK;
990 } 1409 }
991} 1410}
992 1411
993struct transfer_args 1412#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
994{
995 struct coro *prev, *next;
996};
997
998#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1413#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
999 1414
1000/** high level stuff ********************************************************/ 1415/** high level stuff ********************************************************/
1001 1416
1002static int 1417static int
1003coro_state_destroy (pTHX_ struct coro *coro) 1418coro_state_destroy (pTHX_ struct coro *coro)
… …
1020 1435
1021 if (coro->mainstack && coro->mainstack != main_mainstack) 1436 if (coro->mainstack && coro->mainstack != main_mainstack)
1022 { 1437 {
1023 struct coro temp; 1438 struct coro temp;
1024 1439
1025 assert (!(coro->flags & CF_RUNNING));
1026
1027 Zero (&temp, 1, struct coro);
1028 temp.save = CORO_SAVE_ALL;
1029
1030 if (coro->flags & CF_RUNNING) 1440 if (coro->flags & CF_RUNNING)
1031 croak ("FATAL: tried to destroy currently running coroutine"); 1441 croak ("FATAL: tried to destroy currently running coroutine");
1032 1442
1033 save_perl (aTHX_ &temp); 1443 save_perl (aTHX_ &temp);
1034 load_perl (aTHX_ coro); 1444 load_perl (aTHX_ coro);
1035 1445
1036 coro_destroy_stacks (aTHX); 1446 coro_destruct (aTHX_ coro);
1037 1447
1038 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1448 load_perl (aTHX_ &temp);
1039 1449
1040 coro->mainstack = 0; 1450 coro->slot = 0;
1041 } 1451 }
1042 1452
1043 cctx_destroy (coro->cctx); 1453 cctx_destroy (coro->cctx);
1044 SvREFCNT_dec (coro->args); 1454 SvREFCNT_dec (coro->args);
1045 1455
… …
1086#else 1496#else
1087# define MGf_DUP 0 1497# define MGf_DUP 0
1088#endif 1498#endif
1089}; 1499};
1090 1500
1091static struct coro *
1092SvSTATE_ (pTHX_ SV *coro)
1093{
1094 HV *stash;
1095 MAGIC *mg;
1096
1097 if (SvROK (coro))
1098 coro = SvRV (coro);
1099
1100 stash = SvSTASH (coro);
1101 if (stash != coro_stash && stash != coro_state_stash)
1102 {
1103 /* very slow, but rare, check */
1104 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
1105 croak ("Coro::State object required");
1106 }
1107
1108 mg = CORO_MAGIC (coro);
1109 return (struct coro *)mg->mg_ptr;
1110}
1111
1112#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1113
1114static void 1501static void
1115prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1116{ 1503{
1117 ta->prev = SvSTATE (prev_sv); 1504 ta->prev = SvSTATE (prev_sv);
1118 ta->next = SvSTATE (next_sv); 1505 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta);
1119} 1507}
1120 1508
1121static void 1509static void
1122api_transfer (SV *prev_sv, SV *next_sv) 1510api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1123{ 1511{
1124 dTHX;
1125 struct transfer_args ta; 1512 struct transfer_args ta;
1126 1513
1127 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1514 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1128 TRANSFER (ta); 1515 TRANSFER (ta, 1);
1129}
1130
1131static int
1132api_save (SV *coro_sv, int new_save)
1133{
1134 dTHX;
1135 struct coro *coro = SvSTATE (coro_sv);
1136 int old_save = coro->save;
1137
1138 if (new_save >= 0)
1139 coro->save = new_save;
1140
1141 return old_save;
1142} 1516}
1143 1517
1144/** Coro ********************************************************************/ 1518/** Coro ********************************************************************/
1145 1519
1146static void 1520static void
… …
1148{ 1522{
1149 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1150} 1524}
1151 1525
1152static SV * 1526static SV *
1153coro_deq (pTHX_ int min_prio) 1527coro_deq (pTHX)
1154{ 1528{
1155 int prio = PRIO_MAX - PRIO_MIN; 1529 int prio;
1156 1530
1157 min_prio -= PRIO_MIN;
1158 if (min_prio < 0)
1159 min_prio = 0;
1160
1161 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1162 if (AvFILLp (coro_ready [prio]) >= 0) 1532 if (AvFILLp (coro_ready [prio]) >= 0)
1163 return av_shift (coro_ready [prio]); 1533 return av_shift (coro_ready [prio]);
1164 1534
1165 return 0; 1535 return 0;
1166} 1536}
1167 1537
1168static int 1538static int
1169api_ready (SV *coro_sv) 1539api_ready (pTHX_ SV *coro_sv)
1170{ 1540{
1171 dTHX;
1172 struct coro *coro; 1541 struct coro *coro;
1542 SV *sv_hook;
1543 void (*xs_hook)(void);
1173 1544
1174 if (SvROK (coro_sv)) 1545 if (SvROK (coro_sv))
1175 coro_sv = SvRV (coro_sv); 1546 coro_sv = SvRV (coro_sv);
1176 1547
1177 coro = SvSTATE (coro_sv); 1548 coro = SvSTATE (coro_sv);
… …
1180 return 0; 1551 return 0;
1181 1552
1182 coro->flags |= CF_READY; 1553 coro->flags |= CF_READY;
1183 1554
1184 LOCK; 1555 LOCK;
1556
1557 sv_hook = coro_nready ? 0 : coro_readyhook;
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559
1185 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1186 ++coro_nready; 1561 ++coro_nready;
1562
1187 UNLOCK; 1563 UNLOCK;
1564
1565 if (sv_hook)
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 }
1580
1581 if (xs_hook)
1582 xs_hook ();
1188 1583
1189 return 1; 1584 return 1;
1190} 1585}
1191 1586
1192static int 1587static int
1193api_is_ready (SV *coro_sv) 1588api_is_ready (pTHX_ SV *coro_sv)
1194{ 1589{
1195 dTHX;
1196 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1590 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1197} 1591}
1198 1592
1199static void 1593INLINE void
1200prepare_schedule (pTHX_ struct transfer_args *ta) 1594prepare_schedule (pTHX_ struct transfer_args *ta)
1201{ 1595{
1202 SV *prev_sv, *next_sv; 1596 SV *prev_sv, *next_sv;
1203 1597
1204 for (;;) 1598 for (;;)
1205 { 1599 {
1206 LOCK; 1600 LOCK;
1207 next_sv = coro_deq (aTHX_ PRIO_MIN); 1601 next_sv = coro_deq (aTHX);
1208 1602
1209 /* nothing to schedule: call the idle handler */ 1603 /* nothing to schedule: call the idle handler */
1210 if (!next_sv) 1604 if (expect_false (!next_sv))
1211 { 1605 {
1212 dSP; 1606 dSP;
1213 UNLOCK; 1607 UNLOCK;
1214 1608
1215 ENTER; 1609 ENTER;
1216 SAVETMPS; 1610 SAVETMPS;
1217 1611
1218 PUSHMARK (SP); 1612 PUSHMARK (SP);
1219 PUTBACK; 1613 PUTBACK;
1220 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1615 SPAGAIN;
1221 1616
1222 FREETMPS; 1617 FREETMPS;
1223 LEAVE; 1618 LEAVE;
1224 continue; 1619 continue;
1225 } 1620 }
1226 1621
1227 ta->next = SvSTATE (next_sv); 1622 ta->next = SvSTATE (next_sv);
1228 1623
1229 /* cannot transfer to destroyed coros, skip and look for next */ 1624 /* cannot transfer to destroyed coros, skip and look for next */
1230 if (ta->next->flags & CF_DESTROYED) 1625 if (expect_false (ta->next->flags & CF_DESTROYED))
1231 { 1626 {
1232 UNLOCK; 1627 UNLOCK;
1233 SvREFCNT_dec (next_sv); 1628 SvREFCNT_dec (next_sv);
1234 /* coro_nready is already taken care of by destroy */ 1629 /* coro_nready has already been taken care of by destroy */
1235 continue; 1630 continue;
1236 } 1631 }
1237 1632
1238 --coro_nready; 1633 --coro_nready;
1239 UNLOCK; 1634 UNLOCK;
1240 break; 1635 break;
1241 } 1636 }
1242 1637
1243 /* free this only after the transfer */ 1638 /* free this only after the transfer */
1244 prev_sv = SvRV (coro_current); 1639 prev_sv = SvRV (coro_current);
1640 ta->prev = SvSTATE (prev_sv);
1641 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1643 ta->next->flags &= ~CF_READY;
1245 SvRV_set (coro_current, next_sv); 1644 SvRV_set (coro_current, next_sv);
1246 ta->prev = SvSTATE (prev_sv);
1247
1248 assert (ta->next->flags & CF_READY);
1249 ta->next->flags &= ~CF_READY;
1250 1645
1251 LOCK; 1646 LOCK;
1252 free_coro_mortal (aTHX); 1647 free_coro_mortal (aTHX);
1253 coro_mortal = prev_sv; 1648 coro_mortal = prev_sv;
1254 UNLOCK; 1649 UNLOCK;
1255} 1650}
1256 1651
1652INLINE void
1653prepare_cede (pTHX_ struct transfer_args *ta)
1654{
1655 api_ready (aTHX_ coro_current);
1656 prepare_schedule (aTHX_ ta);
1657}
1658
1257static void 1659static void
1258prepare_cede (pTHX_ struct transfer_args *ta) 1660prepare_cede_notself (pTHX_ struct transfer_args *ta)
1259{ 1661{
1260 api_ready (coro_current); 1662 SV *prev = SvRV (coro_current);
1663
1664 if (coro_nready)
1665 {
1666 prepare_schedule (aTHX_ ta);
1667 api_ready (aTHX_ prev);
1668 }
1669 else
1670 ta->prev = ta->next = SvSTATE (prev);
1671}
1672
1673static void
1674api_schedule (pTHX)
1675{
1676 struct transfer_args ta;
1677
1261 prepare_schedule (aTHX_ ta); 1678 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1);
1262} 1680}
1263 1681
1264static int 1682static int
1265prepare_cede_notself (pTHX_ struct transfer_args *ta) 1683api_cede (pTHX)
1266{ 1684{
1267 if (coro_nready) 1685 struct transfer_args ta;
1268 { 1686
1269 SV *prev = SvRV (coro_current);
1270 prepare_schedule (aTHX_ ta); 1687 prepare_cede (aTHX_ &ta);
1271 api_ready (prev); 1688
1689 if (expect_true (ta.prev != ta.next))
1690 {
1691 TRANSFER (ta, 1);
1272 return 1; 1692 return 1;
1273 } 1693 }
1274 else 1694 else
1275 return 0; 1695 return 0;
1276} 1696}
1277 1697
1278static void
1279api_schedule (void)
1280{
1281 dTHX;
1282 struct transfer_args ta;
1283
1284 prepare_schedule (aTHX_ &ta);
1285 TRANSFER (ta);
1286}
1287
1288static int 1698static int
1289api_cede (void) 1699api_cede_notself (pTHX)
1290{ 1700{
1291 dTHX; 1701 if (coro_nready)
1702 {
1292 struct transfer_args ta; 1703 struct transfer_args ta;
1293 1704
1294 prepare_cede (aTHX_ &ta); 1705 prepare_cede_notself (aTHX_ &ta);
1295
1296 if (ta.prev != ta.next)
1297 {
1298 TRANSFER (ta); 1706 TRANSFER (ta, 1);
1299 return 1; 1707 return 1;
1300 } 1708 }
1301 else 1709 else
1302 return 0; 1710 return 0;
1303} 1711}
1304 1712
1713static void
1714api_trace (pTHX_ SV *coro_sv, int flags)
1715{
1716 struct coro *coro = SvSTATE (coro_sv);
1717
1718 if (flags & CC_TRACE)
1719 {
1720 if (!coro->cctx)
1721 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack");
1724
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 {
1729 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1730
1731 if (coro->flags & CF_RUNNING)
1732 PL_runops = RUNOPS_DEFAULT;
1733 else
1734 coro->slot->runops = RUNOPS_DEFAULT;
1735 }
1736}
1737
1738#if 0
1305static int 1739static int
1306api_cede_notself (void) 1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1307{ 1741{
1308 dTHX; 1742 AV *padlist;
1743 AV *av = (AV *)mg->mg_obj;
1744
1745 abort ();
1746
1747 return 0;
1748}
1749
1750static MGVTBL coro_gensub_vtbl = {
1751 0, 0, 0, 0,
1752 coro_gensub_free
1753};
1754#endif
1755
1756/*****************************************************************************/
1757/* PerlIO::cede */
1758
1759typedef struct
1760{
1761 PerlIOBuf base;
1762 NV next, every;
1763} PerlIOCede;
1764
1765static IV
1766PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1767{
1768 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1769
1770 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1771 self->next = nvtime () + self->every;
1772
1773 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1774}
1775
1776static SV *
1777PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1778{
1779 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1780
1781 return newSVnv (self->every);
1782}
1783
1784static IV
1785PerlIOCede_flush (pTHX_ PerlIO *f)
1786{
1787 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1788 double now = nvtime ();
1789
1790 if (now >= self->next)
1791 {
1792 api_cede (aTHX);
1793 self->next = now + self->every;
1794 }
1795
1796 return PerlIOBuf_flush (aTHX_ f);
1797}
1798
1799static PerlIO_funcs PerlIO_cede =
1800{
1801 sizeof(PerlIO_funcs),
1802 "cede",
1803 sizeof(PerlIOCede),
1804 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1805 PerlIOCede_pushed,
1806 PerlIOBuf_popped,
1807 PerlIOBuf_open,
1808 PerlIOBase_binmode,
1809 PerlIOCede_getarg,
1810 PerlIOBase_fileno,
1811 PerlIOBuf_dup,
1812 PerlIOBuf_read,
1813 PerlIOBuf_unread,
1814 PerlIOBuf_write,
1815 PerlIOBuf_seek,
1816 PerlIOBuf_tell,
1817 PerlIOBuf_close,
1818 PerlIOCede_flush,
1819 PerlIOBuf_fill,
1820 PerlIOBase_eof,
1821 PerlIOBase_error,
1822 PerlIOBase_clearerr,
1823 PerlIOBase_setlinebuf,
1824 PerlIOBuf_get_base,
1825 PerlIOBuf_bufsiz,
1826 PerlIOBuf_get_ptr,
1827 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt,
1829};
1830
1831/*****************************************************************************/
1832
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP *
1843pp_restore (pTHX)
1844{
1845 dSP;
1846
1847 PUSHMARK (SP);
1848
1849 EXTEND (SP, 3);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855}
1856
1857#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */
1858
1859enum {
1860 CORO_SLF_CUSTOM = 0,
1861 CORO_SLF_SET_STACKLEVEL = 1,
1862 CORO_SLF_TRANSFER = 2
1863};
1864
1865/* declare prototype */
1866XS(XS_Coro__State__set_stacklevel);
1867
1868/*
1869 * these not obviously related functions are all rolled into one
1870 * function to increase chances that they all will call transfer with the same
1871 * stack offset
1872 * SLF stands for "schedule-like-function".
1873 */
1874static OP *
1875pp_slf (pTHX)
1876{
1877 dSP;
1309 struct transfer_args ta; 1878 struct transfer_args ta;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 int ix = PL_op->op_private & OPpENTERSUB_SLF;
1882 struct CoroSLF *slf = 0;
1310 1883
1884 /* do a quick consistency check on the "function" object, and if it isn't */
1885 /* for us, divert to the real entersub */
1886 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1887 return PL_ppaddr[OP_ENTERSUB](aTHX);
1888
1889 /* pop args */
1890 SP = PL_stack_base + POPMARK;
1891
1892 if (!(PL_op->op_flags & OPf_STACKED))
1893 {
1894 /* ampersand-form of call, use @_ instead of stack */
1895 AV *av = GvAV (PL_defgv);
1896 arg = AvARRAY (av);
1897 items = AvFILLp (av) + 1;
1898 }
1899
1900 PUTBACK;
1901
1902 if (!ix)
1903 {
1904 slf = (struct CoroSLF *)CvSTART (GvCV (*sp));
1905 ix = slf->prepare (aTHX_ arg, items);
1906 }
1907
1908 switch (ix)
1909 {
1910 case CORO_SLF_SET_STACKLEVEL:
1911 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1912 break;
1913
1914 case CORO_SLF_TRANSFER:
1915 if (items != 2)
1916 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1917
1918 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1919 break;
1920
1921 case CORO_SLF_SCHEDULE:
1922 prepare_schedule (aTHX_ &ta);
1923 break;
1924
1925 case CORO_SLF_CEDE:
1926 prepare_cede (aTHX_ &ta);
1927 break;
1928
1929 case CORO_SLF_CEDE_NOTSELF:
1311 if (prepare_cede_notself (aTHX_ &ta)) 1930 prepare_cede_notself (aTHX_ &ta);
1931 break;
1932
1933 default:
1934 abort ();
1312 { 1935 }
1936
1937 do
1313 TRANSFER (ta); 1938 TRANSFER (ta, 0);
1314 return 1; 1939 while (slf && slf->check (aTHX));
1315 }
1316 else
1317 return 0;
1318}
1319 1940
1941 SPAGAIN;
1942
1943 PUTBACK;
1944 SLF_TAIL;
1945 SPAGAIN;
1946 RETURN;
1947}
1948
1949static void
1950coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items)
1951{
1952 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));
1953
1954 assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
1955 slf_cv = cv;
1956
1957 /* we patch the op, and then re-run the whole call */
1958 /* we have to put the same argument on the stack for this to work */
1959 /* and this will be done by pp_restore */
1960 slf_restore.op_next = (OP *)&slf_restore;
1961 slf_restore.op_type = OP_NULL;
1962 slf_restore.op_ppaddr = pp_restore;
1963 slf_restore.op_first = PL_op;
1964
1965 slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1966 slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1967
1968 PL_op->op_ppaddr = pp_slf;
1969 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1970
1971 PL_op = (OP *)&slf_restore;
1972}
1973
1320MODULE = Coro::State PACKAGE = Coro::State 1974MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1321 1975
1322PROTOTYPES: DISABLE 1976PROTOTYPES: DISABLE
1323 1977
1324BOOT: 1978BOOT:
1325{ 1979{
1326#ifdef USE_ITHREADS 1980#ifdef USE_ITHREADS
1327 MUTEX_INIT (&coro_mutex); 1981 MUTEX_INIT (&coro_lock);
1982# if CORO_PTHREAD
1983 coro_thx = PERL_GET_CONTEXT;
1984# endif
1328#endif 1985#endif
1329 BOOT_PAGESIZE; 1986 BOOT_PAGESIZE;
1987
1988 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1989 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1990
1991 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1992 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1993 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1994
1995 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1996 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1997 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1330 1998
1331 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1999 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1332 2000
1333 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2001 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1334 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2002 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1335 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); 2003 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1336 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); 2004 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1337 2005
1338 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1339 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1340 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1341 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1342 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1343 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1344 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1345
1346 main_mainstack = PL_mainstack; 2006 main_mainstack = PL_mainstack;
1347 main_top_env = PL_top_env; 2007 main_top_env = PL_top_env;
1348 2008
1349 while (main_top_env->je_prev) 2009 while (main_top_env->je_prev)
1350 main_top_env = main_top_env->je_prev; 2010 main_top_env = main_top_env->je_prev;
1351 2011
1352 coroapi.ver = CORO_API_VERSION; 2012 coroapi.ver = CORO_API_VERSION;
2013 coroapi.rev = CORO_API_REVISION;
1353 coroapi.transfer = api_transfer; 2014 coroapi.transfer = api_transfer;
2015
2016 {
2017 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2018
2019 if (!svp) croak ("Time::HiRes is required");
2020 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2021
2022 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2023 }
1354 2024
1355 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2025 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1356} 2026}
1357 2027
1358SV * 2028SV *
1359new (char *klass, ...) 2029new (char *klass, ...)
1360 CODE: 2030 CODE:
1361{ 2031{
1362 struct coro *coro; 2032 struct coro *coro;
2033 MAGIC *mg;
1363 HV *hv; 2034 HV *hv;
1364 int i; 2035 int i;
1365 2036
1366 Newz (0, coro, 1, struct coro); 2037 Newz (0, coro, 1, struct coro);
1367 coro->args = newAV (); 2038 coro->args = newAV ();
1368 coro->save = CORO_SAVE_DEF;
1369 coro->flags = CF_NEW; 2039 coro->flags = CF_NEW;
1370 2040
1371 if (coro_first) coro_first->prev = coro; 2041 if (coro_first) coro_first->prev = coro;
1372 coro->next = coro_first; 2042 coro->next = coro_first;
1373 coro_first = coro; 2043 coro_first = coro;
1374 2044
1375 coro->hv = hv = newHV (); 2045 coro->hv = hv = newHV ();
1376 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2046 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2047 mg->mg_flags |= MGf_DUP;
1377 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2048 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1378 2049
2050 av_extend (coro->args, items - 1);
1379 for (i = 1; i < items; i++) 2051 for (i = 1; i < items; i++)
1380 av_push (coro->args, newSVsv (ST (i))); 2052 av_push (coro->args, newSVsv (ST (i)));
1381} 2053}
1382 OUTPUT: 2054 OUTPUT:
1383 RETVAL
1384
1385int
1386save (SV *coro, int new_save = -1)
1387 CODE:
1388 RETVAL = api_save (coro, new_save);
1389 OUTPUT:
1390 RETVAL
1391
1392int
1393save_also (SV *coro_sv, int save_also)
1394 CODE:
1395{
1396 struct coro *coro = SvSTATE (coro_sv);
1397 RETVAL = coro->save;
1398 coro->save |= save_also;
1399}
1400 OUTPUT:
1401 RETVAL 2055 RETVAL
1402 2056
1403void 2057void
1404_set_stacklevel (...) 2058_set_stacklevel (...)
1405 ALIAS: 2059 ALIAS:
2060 _set_stacklevel = CORO_SLF_SET_STACKLEVEL
1406 Coro::State::transfer = 1 2061 Coro::State::transfer = CORO_SLF_TRANSFER
1407 Coro::schedule = 2 2062 Coro::schedule = CORO_SLF_SCHEDULE
1408 Coro::cede = 3 2063 Coro::cede = CORO_SLF_CEDE
1409 Coro::cede_notself = 4 2064 Coro::cede_notself = CORO_SLF_CEDE_NOTSELF
1410 CODE: 2065 CODE:
1411{ 2066 coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
1412 struct transfer_args ta;
1413
1414 switch (ix)
1415 {
1416 case 0:
1417 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1418 ta.next = 0;
1419 break;
1420
1421 case 1:
1422 if (items != 2)
1423 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1424
1425 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1426 break;
1427
1428 case 2:
1429 prepare_schedule (aTHX_ &ta);
1430 break;
1431
1432 case 3:
1433 prepare_cede (aTHX_ &ta);
1434 break;
1435
1436 case 4:
1437 if (!prepare_cede_notself (aTHX_ &ta))
1438 XSRETURN_EMPTY;
1439
1440 break;
1441 }
1442
1443 BARRIER;
1444 TRANSFER (ta);
1445
1446 if (GIMME_V != G_VOID && ta.next != ta.prev)
1447 XSRETURN_YES;
1448}
1449 2067
1450bool 2068bool
1451_destroy (SV *coro_sv) 2069_destroy (SV *coro_sv)
1452 CODE: 2070 CODE:
1453 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2071 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1454 OUTPUT: 2072 OUTPUT:
1455 RETVAL 2073 RETVAL
1456 2074
1457void 2075void
1458_exit (code) 2076_exit (int code)
1459 int code
1460 PROTOTYPE: $ 2077 PROTOTYPE: $
1461 CODE: 2078 CODE:
1462 _exit (code); 2079 _exit (code);
1463 2080
1464int 2081int
1465cctx_stacksize (int new_stacksize = 0) 2082cctx_stacksize (int new_stacksize = 0)
1466 CODE: 2083 CODE:
1467 RETVAL = coro_stacksize; 2084 RETVAL = cctx_stacksize;
1468 if (new_stacksize) 2085 if (new_stacksize)
2086 {
1469 coro_stacksize = new_stacksize; 2087 cctx_stacksize = new_stacksize;
2088 ++cctx_gen;
2089 }
2090 OUTPUT:
2091 RETVAL
2092
2093int
2094cctx_max_idle (int max_idle = 0)
2095 CODE:
2096 RETVAL = cctx_max_idle;
2097 if (max_idle > 1)
2098 cctx_max_idle = max_idle;
1470 OUTPUT: 2099 OUTPUT:
1471 RETVAL 2100 RETVAL
1472 2101
1473int 2102int
1474cctx_count () 2103cctx_count ()
… …
1498call (Coro::State coro, SV *coderef) 2127call (Coro::State coro, SV *coderef)
1499 ALIAS: 2128 ALIAS:
1500 eval = 1 2129 eval = 1
1501 CODE: 2130 CODE:
1502{ 2131{
1503 if (coro->mainstack) 2132 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1504 { 2133 {
1505 struct coro temp; 2134 struct coro temp;
1506 Zero (&temp, 1, struct coro);
1507 temp.save = CORO_SAVE_ALL;
1508 2135
1509 if (!(coro->flags & CF_RUNNING)) 2136 if (!(coro->flags & CF_RUNNING))
1510 { 2137 {
2138 PUTBACK;
1511 save_perl (aTHX_ &temp); 2139 save_perl (aTHX_ &temp);
1512 load_perl (aTHX_ coro); 2140 load_perl (aTHX_ coro);
1513 } 2141 }
1514 2142
1515 { 2143 {
1516 dSP; 2144 dSP;
1517 ENTER; 2145 ENTER;
1518 SAVETMPS; 2146 SAVETMPS;
2147 PUTBACK;
2148 PUSHSTACK;
1519 PUSHMARK (SP); 2149 PUSHMARK (SP);
1520 PUTBACK; 2150
1521 if (ix) 2151 if (ix)
1522 eval_sv (coderef, 0); 2152 eval_sv (coderef, 0);
1523 else 2153 else
1524 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2154 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2155
2156 POPSTACK;
1525 SPAGAIN; 2157 SPAGAIN;
1526 FREETMPS; 2158 FREETMPS;
1527 LEAVE; 2159 LEAVE;
1528 PUTBACK; 2160 PUTBACK;
1529 } 2161 }
1530 2162
1531 if (!(coro->flags & CF_RUNNING)) 2163 if (!(coro->flags & CF_RUNNING))
1532 { 2164 {
1533 save_perl (aTHX_ coro); 2165 save_perl (aTHX_ coro);
1534 load_perl (aTHX_ &temp); 2166 load_perl (aTHX_ &temp);
2167 SPAGAIN;
1535 } 2168 }
1536 } 2169 }
1537} 2170}
1538 2171
1539SV * 2172SV *
1540is_ready (Coro::State coro) 2173is_ready (Coro::State coro)
1541 PROTOTYPE: $ 2174 PROTOTYPE: $
1542 ALIAS: 2175 ALIAS:
1543 is_ready = CF_READY 2176 is_ready = CF_READY
… …
1548 RETVAL = boolSV (coro->flags & ix); 2181 RETVAL = boolSV (coro->flags & ix);
1549 OUTPUT: 2182 OUTPUT:
1550 RETVAL 2183 RETVAL
1551 2184
1552void 2185void
2186throw (Coro::State self, SV *throw = &PL_sv_undef)
2187 PROTOTYPE: $;$
2188 CODE:
2189 SvREFCNT_dec (self->throw);
2190 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2191
2192void
1553trace (Coro::State coro, int flags = CC_TRACE | CC_TRACE_SUB) 2193api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1554 CODE: 2194 C_ARGS: aTHX_ coro, flags
1555 if (flags & CC_TRACE)
1556 {
1557 if (!coro->cctx)
1558 coro->cctx = cctx_new ();
1559 else if (!(coro->cctx->flags & CC_TRACE))
1560 croak ("cannot enable tracing on coroutine with custom stack");
1561
1562 coro->cctx->flags |= flags & (CC_TRACE | CC_TRACE_ALL);
1563 }
1564 else
1565 if (coro->cctx && coro->cctx->flags & CC_TRACE)
1566 {
1567 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1568 coro->cctx->flags |= CC_NOREUSE;
1569
1570 if (coro->flags & CF_RUNNING)
1571 PL_runops = RUNOPS_DEFAULT;
1572 else
1573 coro->runops = RUNOPS_DEFAULT;
1574 }
1575 2195
1576SV * 2196SV *
1577has_stack (Coro::State coro) 2197has_cctx (Coro::State coro)
1578 PROTOTYPE: $ 2198 PROTOTYPE: $
1579 CODE: 2199 CODE:
1580 RETVAL = boolSV (!!coro->cctx); 2200 RETVAL = boolSV (!!coro->cctx);
1581 OUTPUT: 2201 OUTPUT:
1582 RETVAL 2202 RETVAL
… …
1587 CODE: 2207 CODE:
1588 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2208 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1589 OUTPUT: 2209 OUTPUT:
1590 RETVAL 2210 RETVAL
1591 2211
1592IV 2212UV
1593rss (Coro::State coro) 2213rss (Coro::State coro)
1594 PROTOTYPE: $ 2214 PROTOTYPE: $
2215 ALIAS:
2216 usecount = 1
1595 CODE: 2217 CODE:
1596 RETVAL = coro_rss (coro); 2218 switch (ix)
2219 {
2220 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2221 case 1: RETVAL = coro->usecount; break;
2222 }
1597 OUTPUT: 2223 OUTPUT:
1598 RETVAL 2224 RETVAL
1599 2225
2226void
2227force_cctx ()
2228 CODE:
2229 struct coro *coro = SvSTATE (coro_current);
2230 coro->cctx->idle_sp = 0;
2231
2232void
2233swap_defsv (Coro::State self)
2234 PROTOTYPE: $
2235 ALIAS:
2236 swap_defav = 1
2237 CODE:
2238 if (!self->slot)
2239 croak ("cannot swap state with coroutine that has no saved state");
2240 else
2241 {
2242 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2243 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2244
2245 SV *tmp = *src; *src = *dst; *dst = tmp;
2246 }
1600 2247
1601MODULE = Coro::State PACKAGE = Coro 2248MODULE = Coro::State PACKAGE = Coro
1602 2249
1603BOOT: 2250BOOT:
1604{ 2251{
1605 int i; 2252 int i;
1606 2253
1607 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1608 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1609 av_async_pool = get_av ("Coro::async_pool", TRUE); 2254 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2255 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2256 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1610 2257
1611 coro_current = get_sv ("Coro::current", FALSE); 2258 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1612 SvREADONLY_on (coro_current); 2259 SvREADONLY_on (coro_current);
1613 2260
1614 coro_stash = gv_stashpv ("Coro", TRUE); 2261 coro_stash = gv_stashpv ("Coro", TRUE);
1615 2262
1616 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2263 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1617 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2264 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1618 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2265 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1619 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2266 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1622 2269
1623 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2270 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1624 coro_ready[i] = newAV (); 2271 coro_ready[i] = newAV ();
1625 2272
1626 { 2273 {
1627 SV *sv = perl_get_sv("Coro::API", 1); 2274 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1628 2275
1629 coroapi.schedule = api_schedule; 2276 coroapi.schedule = api_schedule;
1630 coroapi.save = api_save;
1631 coroapi.cede = api_cede; 2277 coroapi.cede = api_cede;
1632 coroapi.cede_notself = api_cede_notself; 2278 coroapi.cede_notself = api_cede_notself;
1633 coroapi.ready = api_ready; 2279 coroapi.ready = api_ready;
1634 coroapi.is_ready = api_is_ready; 2280 coroapi.is_ready = api_is_ready;
1635 coroapi.nready = &coro_nready; 2281 coroapi.nready = coro_nready;
1636 coroapi.current = coro_current; 2282 coroapi.current = coro_current;
1637 2283
1638 GCoroAPI = &coroapi; 2284 GCoroAPI = &coroapi;
1639 sv_setiv (sv, (IV)&coroapi); 2285 sv_setiv (sv, (IV)&coroapi);
1640 SvREADONLY_on (sv); 2286 SvREADONLY_on (sv);
… …
1644void 2290void
1645_set_current (SV *current) 2291_set_current (SV *current)
1646 PROTOTYPE: $ 2292 PROTOTYPE: $
1647 CODE: 2293 CODE:
1648 SvREFCNT_dec (SvRV (coro_current)); 2294 SvREFCNT_dec (SvRV (coro_current));
1649 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2295 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2296
2297void
2298_set_readyhook (SV *hook)
2299 PROTOTYPE: $
2300 CODE:
2301 LOCK;
2302 SvREFCNT_dec (coro_readyhook);
2303 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2304 UNLOCK;
1650 2305
1651int 2306int
1652prio (Coro::State coro, int newprio = 0) 2307prio (Coro::State coro, int newprio = 0)
1653 ALIAS: 2308 ALIAS:
1654 nice = 1 2309 nice = 1
… …
1672 2327
1673SV * 2328SV *
1674ready (SV *self) 2329ready (SV *self)
1675 PROTOTYPE: $ 2330 PROTOTYPE: $
1676 CODE: 2331 CODE:
1677 RETVAL = boolSV (api_ready (self)); 2332 RETVAL = boolSV (api_ready (aTHX_ self));
1678 OUTPUT: 2333 OUTPUT:
1679 RETVAL 2334 RETVAL
1680 2335
1681int 2336int
1682nready (...) 2337nready (...)
… …
1689# for async_pool speedup 2344# for async_pool speedup
1690void 2345void
1691_pool_1 (SV *cb) 2346_pool_1 (SV *cb)
1692 CODE: 2347 CODE:
1693{ 2348{
1694 int i, len; 2349 struct coro *coro = SvSTATE (coro_current);
1695 HV *hv = (HV *)SvRV (coro_current); 2350 HV *hv = (HV *)SvRV (coro_current);
1696 AV *defav = GvAV (PL_defgv); 2351 AV *defav = GvAV (PL_defgv);
1697 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2352 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1698 AV *invoke_av; 2353 AV *invoke_av;
2354 int i, len;
1699 2355
1700 if (!invoke) 2356 if (!invoke)
2357 {
2358 SV *old = PL_diehook;
2359 PL_diehook = 0;
2360 SvREFCNT_dec (old);
1701 croak ("\3terminate\2\n"); 2361 croak ("\3async_pool terminate\2\n");
2362 }
2363
2364 SvREFCNT_dec (coro->saved_deffh);
2365 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1702 2366
1703 hv_store (hv, "desc", sizeof ("desc") - 1, 2367 hv_store (hv, "desc", sizeof ("desc") - 1,
1704 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2368 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1705 2369
1706 invoke_av = (AV *)SvRV (invoke); 2370 invoke_av = (AV *)SvRV (invoke);
… …
1710 2374
1711 if (len > 0) 2375 if (len > 0)
1712 { 2376 {
1713 av_fill (defav, len - 1); 2377 av_fill (defav, len - 1);
1714 for (i = 0; i < len; ++i) 2378 for (i = 0; i < len; ++i)
1715 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2379 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1716 } 2380 }
1717 2381
1718 SvREFCNT_dec (invoke); 2382 SvREFCNT_dec (invoke);
1719} 2383}
1720 2384
… …
1724{ 2388{
1725 struct coro *coro = SvSTATE (coro_current); 2389 struct coro *coro = SvSTATE (coro_current);
1726 2390
1727 sv_setsv (cb, &PL_sv_undef); 2391 sv_setsv (cb, &PL_sv_undef);
1728 2392
2393 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2394 coro->saved_deffh = 0;
2395
1729 if (coro_rss (coro) > SvIV (sv_pool_rss) 2396 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1730 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2397 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2398 {
2399 SV *old = PL_diehook;
2400 PL_diehook = 0;
2401 SvREFCNT_dec (old);
1731 croak ("\3terminate\2\n"); 2402 croak ("\3async_pool terminate\2\n");
2403 }
1732 2404
1733 av_clear (GvAV (PL_defgv)); 2405 av_clear (GvAV (PL_defgv));
1734 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2406 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1735 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2407 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1736 coro->save = CORO_SAVE_DEF; 2408
1737 coro->prio = 0; 2409 coro->prio = 0;
2410
2411 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2412 api_trace (aTHX_ coro_current, 0);
2413
1738 av_push (av_async_pool, newSVsv (coro_current)); 2414 av_push (av_async_pool, newSVsv (coro_current));
1739} 2415}
1740 2416
2417#if 0
2418
2419void
2420_generator_call (...)
2421 PROTOTYPE: @
2422 PPCODE:
2423 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2424 xxxx
2425 abort ();
2426
2427SV *
2428gensub (SV *sub, ...)
2429 PROTOTYPE: &;@
2430 CODE:
2431{
2432 struct coro *coro;
2433 MAGIC *mg;
2434 CV *xcv;
2435 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2436 int i;
2437
2438 CvGV (ncv) = CvGV (cv);
2439 CvFILE (ncv) = CvFILE (cv);
2440
2441 Newz (0, coro, 1, struct coro);
2442 coro->args = newAV ();
2443 coro->flags = CF_NEW;
2444
2445 av_extend (coro->args, items - 1);
2446 for (i = 1; i < items; i++)
2447 av_push (coro->args, newSVsv (ST (i)));
2448
2449 CvISXSUB_on (ncv);
2450 CvXSUBANY (ncv).any_ptr = (void *)coro;
2451
2452 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2453
2454 CvXSUB (ncv) = CvXSUB (xcv);
2455 CvANON_on (ncv);
2456
2457 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2458 RETVAL = newRV_noinc ((SV *)ncv);
2459}
2460 OUTPUT:
2461 RETVAL
2462
2463#endif
2464
1741 2465
1742MODULE = Coro::State PACKAGE = Coro::AIO 2466MODULE = Coro::State PACKAGE = Coro::AIO
1743 2467
1744SV * 2468void
1745_get_state () 2469_get_state (SV *self)
1746 CODE: 2470 PPCODE:
1747{ 2471{
1748 struct io_state *data; 2472 AV *defav = GvAV (PL_defgv);
1749 2473 AV *av = newAV ();
2474 int i;
1750 RETVAL = newSV (sizeof (struct io_state)); 2475 SV *data_sv = newSV (sizeof (struct io_state));
1751 data = (struct io_state *)SvPVX (RETVAL); 2476 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1752 SvCUR_set (RETVAL, sizeof (struct io_state)); 2477 SvCUR_set (data_sv, sizeof (struct io_state));
1753 SvPOK_only (RETVAL); 2478 SvPOK_only (data_sv);
1754 2479
1755 data->errorno = errno; 2480 data->errorno = errno;
1756 data->laststype = PL_laststype; 2481 data->laststype = PL_laststype;
1757 data->laststatval = PL_laststatval; 2482 data->laststatval = PL_laststatval;
1758 data->statcache = PL_statcache; 2483 data->statcache = PL_statcache;
2484
2485 av_extend (av, AvFILLp (defav) + 1 + 1);
2486
2487 for (i = 0; i <= AvFILLp (defav); ++i)
2488 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2489
2490 av_push (av, data_sv);
2491
2492 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2493
2494 api_ready (aTHX_ self);
1759} 2495}
1760 OUTPUT:
1761 RETVAL
1762 2496
1763void 2497void
1764_set_state (char *data_) 2498_set_state (SV *state)
1765 PROTOTYPE: $ 2499 PROTOTYPE: $
1766 CODE: 2500 PPCODE:
1767{ 2501{
1768 struct io_state *data = (void *)data_; 2502 AV *av = (AV *)SvRV (state);
2503 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2504 int i;
1769 2505
1770 errno = data->errorno; 2506 errno = data->errorno;
1771 PL_laststype = data->laststype; 2507 PL_laststype = data->laststype;
1772 PL_laststatval = data->laststatval; 2508 PL_laststatval = data->laststatval;
1773 PL_statcache = data->statcache; 2509 PL_statcache = data->statcache;
1774}
1775 2510
2511 EXTEND (SP, AvFILLp (av));
2512 for (i = 0; i < AvFILLp (av); ++i)
2513 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2514}
2515
2516
2517MODULE = Coro::State PACKAGE = Coro::AnyEvent
2518
2519BOOT:
2520 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2521
2522SV *
2523_schedule (...)
2524 PROTOTYPE: @
2525 CODE:
2526{
2527 static int incede;
2528
2529 api_cede_notself (aTHX);
2530
2531 ++incede;
2532 while (coro_nready >= incede && api_cede (aTHX))
2533 ;
2534
2535 sv_setsv (sv_activity, &PL_sv_undef);
2536 if (coro_nready >= incede)
2537 {
2538 PUSHMARK (SP);
2539 PUTBACK;
2540 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2541 SPAGAIN;
2542 }
2543
2544 --incede;
2545}
2546
2547
2548MODULE = Coro::State PACKAGE = PerlIO::cede
2549
2550BOOT:
2551 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2552

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