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Comparing Coro/Coro/State.xs (file contents):
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC vs.
Revision 1.253 by root, Fri Nov 7 20:12:26 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
… …
70# ifndef IS_PADCONST 81# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 82# define IS_PADCONST(v) 0
72# endif 83# endif
73#endif 84#endif
74 85
86/* 5.11 */
87#ifndef CxHASARGS
88# define CxHASARGS(cx) (cx)->blk_sub.hasargs
89#endif
90
91/* 5.10.0 */
92#ifndef SvREFCNT_inc_NN
93# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
94#endif
95
96/* 5.8.8 */
97#ifndef GV_NOTQUAL
98# define GV_NOTQUAL 0
99#endif
100#ifndef newSV
101# define newSV(l) NEWSV(0,l)
102#endif
103
75/* 5.8.7 */ 104/* 5.8.7 */
76#ifndef SvRV_set 105#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 107#endif
79 108
… …
88/* prefer perl internal functions over our own? */ 117/* prefer perl internal functions over our own? */
89#ifndef CORO_PREFER_PERL_FUNCTIONS 118#ifndef CORO_PREFER_PERL_FUNCTIONS
90# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 120#endif
92 121
93/* The next macro should declare a variable stacklevel that contains and approximation 122/* The next macros try to return the current stack pointer, in an as
94 * to the current C stack pointer. Its property is that it changes with each call 123 * portable way as possible. */
95 * and should be unique. */
96#define dSTACKLEVEL int stacklevel 124#define dSTACKLEVEL volatile char stacklevel
97#define STACKLEVEL ((void *)&stacklevel) 125#define STACKLEVEL ((void *)&stacklevel)
98 126
99#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
100 128
101#if __GNUC__ >= 3 129#if __GNUC__ >= 3
102# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
103# define BARRIER __asm__ __volatile__ ("" : : : "memory") 131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value))
104#else 133#else
105# define attribute(x) 134# define attribute(x)
106# define BARRIER 135# define BARRIER
136# define expect(expr,value) (expr)
107#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
108 141
109#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
110 143
111#include "CoroAPI.h" 144#include "CoroAPI.h"
112 145
113#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
114static perl_mutex coro_mutex; 147static perl_mutex coro_lock;
115# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
116# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
117#else 150#else
118# define LOCK (void)0 151# define LOCK (void)0
119# define UNLOCK (void)0 152# define UNLOCK (void)0
120#endif 153#endif
121 154
122/* helper storage struct for Coro::AIO */ 155/* helper storage struct for Coro::AIO */
123struct io_state 156struct io_state
124{ 157{
158 AV *res;
125 int errorno; 159 int errorno;
126 I32 laststype; 160 I32 laststype;
127 int laststatval; 161 int laststatval;
128 Stat_t statcache; 162 Stat_t statcache;
129}; 163};
130 164
165static double (*nvtime)(); /* so why doesn't it take void? */
166
131static size_t coro_stacksize = CORO_STACKSIZE; 167static size_t coro_stacksize = CORO_STACKSIZE;
132static struct CoroAPI coroapi; 168static struct CoroAPI coroapi;
133static AV *main_mainstack; /* used to differentiate between $main and others */ 169static AV *main_mainstack; /* used to differentiate between $main and others */
170static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 171static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 172static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
173
174static GV *irsgv; /* $/ */
175static GV *stdoutgv; /* *STDOUT */
176static SV *rv_diehook;
177static SV *rv_warnhook;
178static HV *hv_sig; /* %SIG */
179
180/* async_pool helper stuff */
181static SV *sv_pool_rss;
182static SV *sv_pool_size;
183static AV *av_async_pool;
184
185/* Coro::AnyEvent */
186static SV *sv_activity;
136 187
137static struct coro_cctx *cctx_first; 188static struct coro_cctx *cctx_first;
138static int cctx_count, cctx_idle; 189static int cctx_count, cctx_idle;
190
191enum {
192 CC_MAPPED = 0x01,
193 CC_NOREUSE = 0x02, /* throw this away after tracing */
194 CC_TRACE = 0x04,
195 CC_TRACE_SUB = 0x08, /* trace sub calls */
196 CC_TRACE_LINE = 0x10, /* trace each statement */
197 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
198};
139 199
140/* this is a structure representing a c-level coroutine */ 200/* this is a structure representing a c-level coroutine */
141typedef struct coro_cctx { 201typedef struct coro_cctx {
142 struct coro_cctx *next; 202 struct coro_cctx *next;
143 203
… …
152 coro_context cctx; 212 coro_context cctx;
153 213
154#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
155 int valgrind_id; 215 int valgrind_id;
156#endif 216#endif
157 char inuse, mapped; 217 unsigned char flags;
158} coro_cctx; 218} coro_cctx;
159 219
160enum { 220enum {
161 CF_RUNNING = 0x0001, /* coroutine is running */ 221 CF_RUNNING = 0x0001, /* coroutine is running */
162 CF_READY = 0x0002, /* coroutine is ready */ 222 CF_READY = 0x0002, /* coroutine is ready */
163 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
164 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
165}; 225};
166 226
227/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct {
229 SV *defsv;
230 AV *defav;
231 SV *errsv;
232 SV *irsgv;
233#define VAR(name,type) type name;
234# include "state.h"
235#undef VAR
236} perl_slots;
237
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
239
167/* this is a structure representing a perl-level coroutine */ 240/* this is a structure representing a perl-level coroutine */
168struct coro { 241struct coro {
169 /* the c coroutine allocated to this perl coroutine, if any */ 242 /* the c coroutine allocated to this perl coroutine, if any */
170 coro_cctx *cctx; 243 coro_cctx *cctx;
171 244
245 /* process data */
246 AV *mainstack;
247 perl_slots *slot; /* basically the saved sp */
248
172 /* data associated with this coroutine (initial args) */ 249 AV *args; /* data associated with this coroutine (initial args) */
173 AV *args; 250 int refcnt; /* coroutines are refcounted, yes */
174 int refcnt;
175 int save; /* CORO_SAVE flags */
176 int flags; /* CF_ flags */ 251 int flags; /* CF_ flags */
252 HV *hv; /* the perl hash associated with this coro, if any */
177 253
178 /* optionally saved, might be zero */ 254 /* statistics */
179 AV *defav; /* @_ */ 255 int usecount; /* number of transfers to this coro */
180 SV *defsv; /* $_ */
181 SV *errsv; /* $@ */
182 GV *deffh; /* default filehandle */
183 SV *irssv; /* $/ */
184 SV *irssv_sv; /* real $/ cache */
185
186#define VAR(name,type) type name;
187# include "state.h"
188#undef VAR
189 256
190 /* coro process data */ 257 /* coro process data */
191 int prio; 258 int prio;
259 SV *throw; /* exception to be thrown */
260
261 /* async_pool */
262 SV *saved_deffh;
263
264 /* linked list */
265 struct coro *next, *prev;
192}; 266};
193 267
194typedef struct coro *Coro__State; 268typedef struct coro *Coro__State;
195typedef struct coro *Coro__State_or_hashref; 269typedef struct coro *Coro__State_or_hashref;
196 270
… …
203#define PRIO_IDLE -3 277#define PRIO_IDLE -3
204#define PRIO_MIN -4 278#define PRIO_MIN -4
205 279
206/* for Coro.pm */ 280/* for Coro.pm */
207static SV *coro_current; 281static SV *coro_current;
282static SV *coro_readyhook;
208static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 283static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
209static int coro_nready; 284static int coro_nready;
285static struct coro *coro_first;
210 286
211/** lowlevel stuff **********************************************************/ 287/** lowlevel stuff **********************************************************/
288
289static SV *
290coro_get_sv (pTHX_ const char *name, int create)
291{
292#if PERL_VERSION_ATLEAST (5,10,0)
293 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
294 get_sv (name, create);
295#endif
296 return get_sv (name, create);
297}
298
299static AV *
300coro_get_av (pTHX_ const char *name, int create)
301{
302#if PERL_VERSION_ATLEAST (5,10,0)
303 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
304 get_av (name, create);
305#endif
306 return get_av (name, create);
307}
308
309static HV *
310coro_get_hv (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_hv (name, create);
315#endif
316 return get_hv (name, create);
317}
212 318
213static AV * 319static AV *
214coro_clone_padlist (pTHX_ CV *cv) 320coro_clone_padlist (pTHX_ CV *cv)
215{ 321{
216 AV *padlist = CvPADLIST (cv); 322 AV *padlist = CvPADLIST (cv);
217 AV *newpadlist, *newpad; 323 AV *newpadlist, *newpad;
218 324
219 newpadlist = newAV (); 325 newpadlist = newAV ();
220 AvREAL_off (newpadlist); 326 AvREAL_off (newpadlist);
221#if PERL_VERSION_ATLEAST (5,9,0) 327#if PERL_VERSION_ATLEAST (5,10,0)
222 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 328 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
223#else 329#else
224 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 330 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
225#endif 331#endif
226 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 332 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
227 --AvFILLp (padlist); 333 --AvFILLp (padlist);
228 334
229 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 335 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
230 av_store (newpadlist, 1, (SV *)newpad); 336 av_store (newpadlist, 1, (SV *)newpad);
231 337
232 return newpadlist; 338 return newpadlist;
233} 339}
234 340
… …
264 370
265 /* casting is fun. */ 371 /* casting is fun. */
266 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 372 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
267 free_padlist (aTHX_ padlist); 373 free_padlist (aTHX_ padlist);
268 374
269 SvREFCNT_dec (av); 375 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
270 376
271 return 0; 377 return 0;
272} 378}
273 379
274#define PERL_MAGIC_coro PERL_MAGIC_ext 380#define CORO_MAGIC_type_cv PERL_MAGIC_ext
381#define CORO_MAGIC_type_state PERL_MAGIC_ext
275 382
276static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 383static MGVTBL coro_cv_vtbl = {
384 0, 0, 0, 0,
385 coro_cv_free
386};
277 387
278#define CORO_MAGIC(cv) \ 388#define CORO_MAGIC(sv, type) \
279 SvMAGIC (cv) \ 389 SvMAGIC (sv) \
280 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 390 ? SvMAGIC (sv)->mg_type == type \
281 ? SvMAGIC (cv) \ 391 ? SvMAGIC (sv) \
282 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 392 : mg_find (sv, type) \
283 : 0 393 : 0
394
395#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
396#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
397
398static struct coro *
399SvSTATE_ (pTHX_ SV *coro)
400{
401 HV *stash;
402 MAGIC *mg;
403
404 if (SvROK (coro))
405 coro = SvRV (coro);
406
407 if (expect_false (SvTYPE (coro) != SVt_PVHV))
408 croak ("Coro::State object required");
409
410 stash = SvSTASH (coro);
411 if (expect_false (stash != coro_stash && stash != coro_state_stash))
412 {
413 /* very slow, but rare, check */
414 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
415 croak ("Coro::State object required");
416 }
417
418 mg = CORO_MAGIC_state (coro);
419 return (struct coro *)mg->mg_ptr;
420}
421
422#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
284 423
285/* the next two functions merely cache the padlists */ 424/* the next two functions merely cache the padlists */
286static void 425static void
287get_padlist (pTHX_ CV *cv) 426get_padlist (pTHX_ CV *cv)
288{ 427{
289 MAGIC *mg = CORO_MAGIC (cv); 428 MAGIC *mg = CORO_MAGIC_cv (cv);
290 AV *av; 429 AV *av;
291 430
292 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 431 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
293 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 432 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
294 else 433 else
295 { 434 {
296#if CORO_PREFER_PERL_FUNCTIONS 435#if CORO_PREFER_PERL_FUNCTIONS
297 /* this is probably cleaner, but also slower? */ 436 /* this is probably cleaner? but also slower! */
437 /* in practise, it seems to be less stable */
298 CV *cp = Perl_cv_clone (cv); 438 CV *cp = Perl_cv_clone (cv);
299 CvPADLIST (cv) = CvPADLIST (cp); 439 CvPADLIST (cv) = CvPADLIST (cp);
300 CvPADLIST (cp) = 0; 440 CvPADLIST (cp) = 0;
301 SvREFCNT_dec (cp); 441 SvREFCNT_dec (cp);
302#else 442#else
… …
306} 446}
307 447
308static void 448static void
309put_padlist (pTHX_ CV *cv) 449put_padlist (pTHX_ CV *cv)
310{ 450{
311 MAGIC *mg = CORO_MAGIC (cv); 451 MAGIC *mg = CORO_MAGIC_cv (cv);
312 AV *av; 452 AV *av;
313 453
314 if (!mg) 454 if (expect_false (!mg))
315 { 455 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
316 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
317 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
318 mg->mg_virtual = &vtbl_coro;
319 mg->mg_obj = (SV *)newAV ();
320 }
321 456
322 av = (AV *)mg->mg_obj; 457 av = (AV *)mg->mg_obj;
323 458
324 if (AvFILLp (av) >= AvMAX (av)) 459 if (expect_false (AvFILLp (av) >= AvMAX (av)))
325 av_extend (av, AvMAX (av) + 1); 460 av_extend (av, AvMAX (av) + 1);
326 461
327 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 462 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
328} 463}
329 464
330/** load & save, init *******************************************************/ 465/** load & save, init *******************************************************/
331
332#define SB do {
333#define SE } while (0)
334
335#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
336 466
337static void 467static void
338load_perl (pTHX_ Coro__State c) 468load_perl (pTHX_ Coro__State c)
339{ 469{
470 perl_slots *slot = c->slot;
471 c->slot = 0;
472
473 PL_mainstack = c->mainstack;
474
475 GvSV (PL_defgv) = slot->defsv;
476 GvAV (PL_defgv) = slot->defav;
477 GvSV (PL_errgv) = slot->errsv;
478 GvSV (irsgv) = slot->irsgv;
479
340#define VAR(name,type) PL_ ## name = c->name; 480 #define VAR(name,type) PL_ ## name = slot->name;
341# include "state.h" 481 # include "state.h"
342#undef VAR 482 #undef VAR
343
344 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
345 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
346 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
347 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
348
349 if (c->irssv)
350 {
351 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
352 {
353 SvREFCNT_dec (c->irssv);
354 c->irssv = 0;
355 }
356 else
357 {
358 REPLACE_SV (PL_rs, c->irssv);
359 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
360 sv_setsv (c->irssv_sv, PL_rs);
361 }
362 }
363 483
364 { 484 {
365 dSP; 485 dSP;
486
366 CV *cv; 487 CV *cv;
367 488
368 /* now do the ugly restore mess */ 489 /* now do the ugly restore mess */
369 while ((cv = (CV *)POPs)) 490 while (expect_true (cv = (CV *)POPs))
370 { 491 {
371 put_padlist (aTHX_ cv); /* mark this padlist as available */ 492 put_padlist (aTHX_ cv); /* mark this padlist as available */
372 CvDEPTH (cv) = PTR2IV (POPs); 493 CvDEPTH (cv) = PTR2IV (POPs);
373 CvPADLIST (cv) = (AV *)POPs; 494 CvPADLIST (cv) = (AV *)POPs;
374 } 495 }
375 496
376 PUTBACK; 497 PUTBACK;
377 } 498 }
378 assert (!PL_comppad || AvARRAY (PL_comppad));//D
379} 499}
380 500
381static void 501static void
382save_perl (pTHX_ Coro__State c) 502save_perl (pTHX_ Coro__State c)
383{ 503{
384 assert (!PL_comppad || AvARRAY (PL_comppad));//D
385 { 504 {
386 dSP; 505 dSP;
387 I32 cxix = cxstack_ix; 506 I32 cxix = cxstack_ix;
388 PERL_CONTEXT *ccstk = cxstack; 507 PERL_CONTEXT *ccstk = cxstack;
389 PERL_SI *top_si = PL_curstackinfo; 508 PERL_SI *top_si = PL_curstackinfo;
… …
391 /* 510 /*
392 * the worst thing you can imagine happens first - we have to save 511 * the worst thing you can imagine happens first - we have to save
393 * (and reinitialize) all cv's in the whole callchain :( 512 * (and reinitialize) all cv's in the whole callchain :(
394 */ 513 */
395 514
396 EXTEND (SP, 3 + 1);
397 PUSHs (Nullsv); 515 XPUSHs (Nullsv);
398 /* this loop was inspired by pp_caller */ 516 /* this loop was inspired by pp_caller */
399 for (;;) 517 for (;;)
400 { 518 {
401 while (cxix >= 0) 519 while (expect_true (cxix >= 0))
402 { 520 {
403 PERL_CONTEXT *cx = &ccstk[cxix--]; 521 PERL_CONTEXT *cx = &ccstk[cxix--];
404 522
405 if (CxTYPE (cx) == CXt_SUB) 523 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
406 { 524 {
407 CV *cv = cx->blk_sub.cv; 525 CV *cv = cx->blk_sub.cv;
408 526
409 if (CvDEPTH (cv)) 527 if (expect_true (CvDEPTH (cv)))
410 { 528 {
411 EXTEND (SP, 3); 529 EXTEND (SP, 3);
412 PUSHs ((SV *)CvPADLIST (cv)); 530 PUSHs ((SV *)CvPADLIST (cv));
413 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 531 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
414 PUSHs ((SV *)cv); 532 PUSHs ((SV *)cv);
415 533
416 CvDEPTH (cv) = 0; 534 CvDEPTH (cv) = 0;
417 get_padlist (aTHX_ cv); 535 get_padlist (aTHX_ cv);
418 } 536 }
419 } 537 }
420 } 538 }
421 539
422 if (top_si->si_type == PERLSI_MAIN) 540 if (expect_true (top_si->si_type == PERLSI_MAIN))
423 break; 541 break;
424 542
425 top_si = top_si->si_prev; 543 top_si = top_si->si_prev;
426 ccstk = top_si->si_cxstack; 544 ccstk = top_si->si_cxstack;
427 cxix = top_si->si_cxix; 545 cxix = top_si->si_cxix;
428 } 546 }
429 547
430 PUTBACK; 548 PUTBACK;
431 } 549 }
432 550
433 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 551 /* allocate some space on the context stack for our purposes */
434 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 552 /* we manually unroll here, as usually 2 slots is enough */
435 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 553 if (SLOT_COUNT >= 1) CXINC;
436 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 554 if (SLOT_COUNT >= 2) CXINC;
437 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 555 if (SLOT_COUNT >= 3) CXINC;
556 {
557 int i;
558 for (i = 3; i < SLOT_COUNT; ++i)
559 CXINC;
560 }
561 cxstack_ix -= SLOT_COUNT; /* undo allocation */
438 562
563 c->mainstack = PL_mainstack;
564
565 {
566 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
567
568 slot->defav = GvAV (PL_defgv);
569 slot->defsv = DEFSV;
570 slot->errsv = ERRSV;
571 slot->irsgv = GvSV (irsgv);
572
439#define VAR(name,type)c->name = PL_ ## name; 573 #define VAR(name,type) slot->name = PL_ ## name;
440# include "state.h" 574 # include "state.h"
441#undef VAR 575 #undef VAR
576 }
442} 577}
443 578
444/* 579/*
445 * allocate various perl stacks. This is an exact copy 580 * allocate various perl stacks. This is an exact copy
446 * of perl.c:init_stacks, except that it uses less memory 581 * of perl.c:init_stacks, except that it uses less memory
… …
451# define coro_init_stacks init_stacks 586# define coro_init_stacks init_stacks
452#else 587#else
453static void 588static void
454coro_init_stacks (pTHX) 589coro_init_stacks (pTHX)
455{ 590{
456 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 591 PL_curstackinfo = new_stackinfo(32, 8);
457 PL_curstackinfo->si_type = PERLSI_MAIN; 592 PL_curstackinfo->si_type = PERLSI_MAIN;
458 PL_curstack = PL_curstackinfo->si_stack; 593 PL_curstack = PL_curstackinfo->si_stack;
459 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 594 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
460 595
461 PL_stack_base = AvARRAY(PL_curstack); 596 PL_stack_base = AvARRAY(PL_curstack);
462 PL_stack_sp = PL_stack_base; 597 PL_stack_sp = PL_stack_base;
463 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 598 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
464 599
465 New(50,PL_tmps_stack,128,SV*); 600 New(50,PL_tmps_stack,32,SV*);
466 PL_tmps_floor = -1; 601 PL_tmps_floor = -1;
467 PL_tmps_ix = -1; 602 PL_tmps_ix = -1;
468 PL_tmps_max = 128; 603 PL_tmps_max = 32;
469 604
470 New(54,PL_markstack,32,I32); 605 New(54,PL_markstack,16,I32);
471 PL_markstack_ptr = PL_markstack; 606 PL_markstack_ptr = PL_markstack;
472 PL_markstack_max = PL_markstack + 32; 607 PL_markstack_max = PL_markstack + 16;
473 608
474#ifdef SET_MARK_OFFSET 609#ifdef SET_MARK_OFFSET
475 SET_MARK_OFFSET; 610 SET_MARK_OFFSET;
476#endif 611#endif
477 612
478 New(54,PL_scopestack,32,I32); 613 New(54,PL_scopestack,8,I32);
479 PL_scopestack_ix = 0; 614 PL_scopestack_ix = 0;
480 PL_scopestack_max = 32; 615 PL_scopestack_max = 8;
481 616
482 New(54,PL_savestack,64,ANY); 617 New(54,PL_savestack,24,ANY);
483 PL_savestack_ix = 0; 618 PL_savestack_ix = 0;
484 PL_savestack_max = 64; 619 PL_savestack_max = 24;
485 620
486#if !PERL_VERSION_ATLEAST (5,9,0) 621#if !PERL_VERSION_ATLEAST (5,10,0)
487 New(54,PL_retstack,16,OP*); 622 New(54,PL_retstack,4,OP*);
488 PL_retstack_ix = 0; 623 PL_retstack_ix = 0;
489 PL_retstack_max = 16; 624 PL_retstack_max = 4;
490#endif 625#endif
491} 626}
492#endif 627#endif
493 628
494/* 629/*
495 * destroy the stacks, the callchain etc... 630 * destroy the stacks, the callchain etc...
496 */ 631 */
497static void 632static void
498coro_destroy_stacks (pTHX) 633coro_destruct_stacks (pTHX)
499{ 634{
500 if (!IN_DESTRUCT)
501 {
502 /* restore all saved variables and stuff */
503 LEAVE_SCOPE (0);
504 assert (PL_tmps_floor == -1);
505
506 /* free all temporaries */
507 FREETMPS;
508 assert (PL_tmps_ix == -1);
509
510 /* unwind all extra stacks */
511 POPSTACK_TO (PL_mainstack);
512
513 /* unwind main stack */
514 dounwind (-1);
515 }
516
517 while (PL_curstackinfo->si_next) 635 while (PL_curstackinfo->si_next)
518 PL_curstackinfo = PL_curstackinfo->si_next; 636 PL_curstackinfo = PL_curstackinfo->si_next;
519 637
520 while (PL_curstackinfo) 638 while (PL_curstackinfo)
521 { 639 {
… …
531 649
532 Safefree (PL_tmps_stack); 650 Safefree (PL_tmps_stack);
533 Safefree (PL_markstack); 651 Safefree (PL_markstack);
534 Safefree (PL_scopestack); 652 Safefree (PL_scopestack);
535 Safefree (PL_savestack); 653 Safefree (PL_savestack);
536#if !PERL_VERSION_ATLEAST (5,9,0) 654#if !PERL_VERSION_ATLEAST (5,10,0)
537 Safefree (PL_retstack); 655 Safefree (PL_retstack);
538#endif 656#endif
539} 657}
540 658
659static size_t
660coro_rss (pTHX_ struct coro *coro)
661{
662 size_t rss = sizeof (*coro);
663
664 if (coro->mainstack)
665 {
666 perl_slots tmp_slot;
667 perl_slots *slot;
668
669 if (coro->flags & CF_RUNNING)
670 {
671 slot = &tmp_slot;
672
673 #define VAR(name,type) slot->name = PL_ ## name;
674 # include "state.h"
675 #undef VAR
676 }
677 else
678 slot = coro->slot;
679
680 if (slot)
681 {
682 rss += sizeof (slot->curstackinfo);
683 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
684 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
685 rss += slot->tmps_max * sizeof (SV *);
686 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
687 rss += slot->scopestack_max * sizeof (I32);
688 rss += slot->savestack_max * sizeof (ANY);
689
690#if !PERL_VERSION_ATLEAST (5,10,0)
691 rss += slot->retstack_max * sizeof (OP *);
692#endif
693 }
694 }
695
696 return rss;
697}
698
541/** coroutine stack handling ************************************************/ 699/** coroutine stack handling ************************************************/
542 700
701static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
702static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
703static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
704
705/* apparently < 5.8.8 */
706#ifndef MgPV_nolen_const
707#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
708 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
709 (const char*)(mg)->mg_ptr)
710#endif
711
712/*
713 * This overrides the default magic get method of %SIG elements.
714 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
715 * and instead of tryign to save and restore the hash elements, we just provide
716 * readback here.
717 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
718 * not expecting this to actually change the hook. This is a potential problem
719 * when a schedule happens then, but we ignore this.
720 */
721static int
722coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
723{
724 const char *s = MgPV_nolen_const (mg);
725
726 if (*s == '_')
727 {
728 SV **svp = 0;
729
730 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
731 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
732
733 if (svp)
734 {
735 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
736 return 0;
737 }
738 }
739
740 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
741}
742
743static int
744coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
745{
746 const char *s = MgPV_nolen_const (mg);
747
748 if (*s == '_')
749 {
750 SV **svp = 0;
751
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754
755 if (svp)
756 {
757 SV *old = *svp;
758 *svp = 0;
759 SvREFCNT_dec (old);
760 return 0;
761 }
762 }
763
764 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
765}
766
767static int
768coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
769{
770 const char *s = MgPV_nolen_const (mg);
771
772 if (*s == '_')
773 {
774 SV **svp = 0;
775
776 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
777 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
778
779 if (svp)
780 {
781 SV *old = *svp;
782 *svp = newSVsv (sv);
783 SvREFCNT_dec (old);
784 return 0;
785 }
786 }
787
788 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
789}
790
543static void 791static void
544setup_coro (pTHX_ struct coro *coro) 792coro_setup (pTHX_ struct coro *coro)
545{ 793{
546 /* 794 /*
547 * emulate part of the perl startup here. 795 * emulate part of the perl startup here.
548 */ 796 */
549 coro_init_stacks (aTHX); 797 coro_init_stacks (aTHX);
550 798
799 PL_runops = RUNOPS_DEFAULT;
551 PL_curcop = &PL_compiling; 800 PL_curcop = &PL_compiling;
552 PL_in_eval = EVAL_NULL; 801 PL_in_eval = EVAL_NULL;
553 PL_comppad = 0; 802 PL_comppad = 0;
554 PL_curpm = 0; 803 PL_curpm = 0;
804 PL_curpad = 0;
555 PL_localizing = 0; 805 PL_localizing = 0;
556 PL_dirty = 0; 806 PL_dirty = 0;
557 PL_restartop = 0; 807 PL_restartop = 0;
808#if PERL_VERSION_ATLEAST (5,10,0)
809 PL_parser = 0;
810#endif
811
812 /* recreate the die/warn hooks */
813 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
814 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
815
816 GvSV (PL_defgv) = newSV (0);
817 GvAV (PL_defgv) = coro->args; coro->args = 0;
818 GvSV (PL_errgv) = newSV (0);
819 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
820 PL_rs = newSVsv (GvSV (irsgv));
821 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
558 822
559 { 823 {
560 dSP; 824 dSP;
561 LOGOP myop; 825 LOGOP myop;
562 826
563 SvREFCNT_dec (GvAV (PL_defgv));
564 GvAV (PL_defgv) = coro->args; coro->args = 0;
565
566 Zero (&myop, 1, LOGOP); 827 Zero (&myop, 1, LOGOP);
567 myop.op_next = Nullop; 828 myop.op_next = Nullop;
568 myop.op_flags = OPf_WANT_VOID; 829 myop.op_flags = OPf_WANT_VOID;
569 830
570 PUSHMARK (SP); 831 PUSHMARK (SP);
571 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 832 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
572 PUTBACK; 833 PUTBACK;
573 PL_op = (OP *)&myop; 834 PL_op = (OP *)&myop;
574 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575 SPAGAIN; 836 SPAGAIN;
576 } 837 }
577 838
578 ENTER; /* necessary e.g. for dounwind */ 839 /* this newly created coroutine might be run on an existing cctx which most
840 * likely was suspended in set_stacklevel, called from entersub.
841 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
842 * so we ENTER here for symmetry
843 */
844 ENTER;
845}
846
847static void
848coro_destruct (pTHX_ struct coro *coro)
849{
850 if (!IN_DESTRUCT)
851 {
852 /* restore all saved variables and stuff */
853 LEAVE_SCOPE (0);
854 assert (PL_tmps_floor == -1);
855
856 /* free all temporaries */
857 FREETMPS;
858 assert (PL_tmps_ix == -1);
859
860 /* unwind all extra stacks */
861 POPSTACK_TO (PL_mainstack);
862
863 /* unwind main stack */
864 dounwind (-1);
865 }
866
867 SvREFCNT_dec (GvSV (PL_defgv));
868 SvREFCNT_dec (GvAV (PL_defgv));
869 SvREFCNT_dec (GvSV (PL_errgv));
870 SvREFCNT_dec (PL_defoutgv);
871 SvREFCNT_dec (PL_rs);
872 SvREFCNT_dec (GvSV (irsgv));
873
874 SvREFCNT_dec (PL_diehook);
875 SvREFCNT_dec (PL_warnhook);
876
877 SvREFCNT_dec (coro->saved_deffh);
878 SvREFCNT_dec (coro->throw);
879
880 coro_destruct_stacks (aTHX);
579} 881}
580 882
581static void 883static void
582free_coro_mortal (pTHX) 884free_coro_mortal (pTHX)
583{ 885{
584 if (coro_mortal) 886 if (expect_true (coro_mortal))
585 { 887 {
586 SvREFCNT_dec (coro_mortal); 888 SvREFCNT_dec (coro_mortal);
587 coro_mortal = 0; 889 coro_mortal = 0;
588 } 890 }
589} 891}
590 892
893static int
894runops_trace (pTHX)
895{
896 COP *oldcop = 0;
897 int oldcxix = -2;
898 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
899 coro_cctx *cctx = coro->cctx;
900
901 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
902 {
903 PERL_ASYNC_CHECK ();
904
905 if (cctx->flags & CC_TRACE_ALL)
906 {
907 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
908 {
909 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
910 SV **bot, **top;
911 AV *av = newAV (); /* return values */
912 SV **cb;
913 dSP;
914
915 GV *gv = CvGV (cx->blk_sub.cv);
916 SV *fullname = sv_2mortal (newSV (0));
917 if (isGV (gv))
918 gv_efullname3 (fullname, gv, 0);
919
920 bot = PL_stack_base + cx->blk_oldsp + 1;
921 top = cx->blk_gimme == G_ARRAY ? SP + 1
922 : cx->blk_gimme == G_SCALAR ? bot + 1
923 : bot;
924
925 av_extend (av, top - bot);
926 while (bot < top)
927 av_push (av, SvREFCNT_inc_NN (*bot++));
928
929 PL_runops = RUNOPS_DEFAULT;
930 ENTER;
931 SAVETMPS;
932 EXTEND (SP, 3);
933 PUSHMARK (SP);
934 PUSHs (&PL_sv_no);
935 PUSHs (fullname);
936 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
937 PUTBACK;
938 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
939 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
940 SPAGAIN;
941 FREETMPS;
942 LEAVE;
943 PL_runops = runops_trace;
944 }
945
946 if (oldcop != PL_curcop)
947 {
948 oldcop = PL_curcop;
949
950 if (PL_curcop != &PL_compiling)
951 {
952 SV **cb;
953
954 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
955 {
956 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
957
958 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
959 {
960 runops_proc_t old_runops = PL_runops;
961 dSP;
962 GV *gv = CvGV (cx->blk_sub.cv);
963 SV *fullname = sv_2mortal (newSV (0));
964
965 if (isGV (gv))
966 gv_efullname3 (fullname, gv, 0);
967
968 PL_runops = RUNOPS_DEFAULT;
969 ENTER;
970 SAVETMPS;
971 EXTEND (SP, 3);
972 PUSHMARK (SP);
973 PUSHs (&PL_sv_yes);
974 PUSHs (fullname);
975 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
976 PUTBACK;
977 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
978 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
979 SPAGAIN;
980 FREETMPS;
981 LEAVE;
982 PL_runops = runops_trace;
983 }
984
985 oldcxix = cxstack_ix;
986 }
987
988 if (cctx->flags & CC_TRACE_LINE)
989 {
990 dSP;
991
992 PL_runops = RUNOPS_DEFAULT;
993 ENTER;
994 SAVETMPS;
995 EXTEND (SP, 3);
996 PL_runops = RUNOPS_DEFAULT;
997 PUSHMARK (SP);
998 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
999 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1000 PUTBACK;
1001 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1002 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1003 SPAGAIN;
1004 FREETMPS;
1005 LEAVE;
1006 PL_runops = runops_trace;
1007 }
1008 }
1009 }
1010 }
1011 }
1012
1013 TAINT_NOT;
1014 return 0;
1015}
1016
591/* inject a fake call to Coro::State::_cctx_init into the execution */ 1017/* inject a fake call to Coro::State::_cctx_init into the execution */
1018/* _cctx_init should be careful, as it could be called at almost any time */
1019/* during execution of a perl program */
592static void NOINLINE 1020static void NOINLINE
593prepare_cctx (pTHX_ coro_cctx *cctx) 1021cctx_prepare (pTHX_ coro_cctx *cctx)
594{ 1022{
595 dSP; 1023 dSP;
596 LOGOP myop; 1024 LOGOP myop;
1025
1026 PL_top_env = &PL_start_env;
1027
1028 if (cctx->flags & CC_TRACE)
1029 PL_runops = runops_trace;
597 1030
598 Zero (&myop, 1, LOGOP); 1031 Zero (&myop, 1, LOGOP);
599 myop.op_next = PL_op; 1032 myop.op_next = PL_op;
600 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1033 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
601 1034
… …
607 PL_op = (OP *)&myop; 1040 PL_op = (OP *)&myop;
608 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1041 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
609 SPAGAIN; 1042 SPAGAIN;
610} 1043}
611 1044
1045/*
1046 * this is a _very_ stripped down perl interpreter ;)
1047 */
612static void 1048static void
613coro_run (void *arg) 1049cctx_run (void *arg)
614{ 1050{
615 dTHX; 1051 dTHX;
616 1052
617 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1053 /* cctx_run is the alternative tail of transfer(), so unlock here. */
618 UNLOCK; 1054 UNLOCK;
619 1055
620 /* 1056 /* we now skip the entersub that lead to transfer() */
621 * this is a _very_ stripped down perl interpreter ;) 1057 PL_op = PL_op->op_next;
622 */
623 PL_top_env = &PL_start_env;
624 1058
625 /* inject call to cctx_init */ 1059 /* inject a fake subroutine call to cctx_init */
626 prepare_cctx (aTHX_ (coro_cctx *)arg); 1060 cctx_prepare (aTHX_ (coro_cctx *)arg);
627 1061
628 /* somebody will hit me for both perl_run and PL_restartop */ 1062 /* somebody or something will hit me for both perl_run and PL_restartop */
629 PL_restartop = PL_op; 1063 PL_restartop = PL_op;
630 perl_run (PL_curinterp); 1064 perl_run (PL_curinterp);
631 1065
632 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1066 /*
633 abort (); 1067 * If perl-run returns we assume exit() was being called or the coro
1068 * fell off the end, which seems to be the only valid (non-bug)
1069 * reason for perl_run to return. We try to exit by jumping to the
1070 * bootstrap-time "top" top_env, as we cannot restore the "main"
1071 * coroutine as Coro has no such concept
1072 */
1073 PL_top_env = main_top_env;
1074 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
634} 1075}
635 1076
636static coro_cctx * 1077static coro_cctx *
637cctx_new () 1078cctx_new ()
638{ 1079{
639 coro_cctx *cctx; 1080 coro_cctx *cctx;
640 void *stack_start; 1081 void *stack_start;
641 size_t stack_size; 1082 size_t stack_size;
642 1083
643 ++cctx_count; 1084 ++cctx_count;
644
645 Newz (0, cctx, 1, coro_cctx); 1085 Newz (0, cctx, 1, coro_cctx);
646 1086
647#if HAVE_MMAP 1087#if HAVE_MMAP
648
649 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1088 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
650 /* mmap supposedly does allocate-on-write for us */ 1089 /* mmap supposedly does allocate-on-write for us */
651 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1090 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
652 1091
653 if (cctx->sptr != (void *)-1) 1092 if (cctx->sptr != (void *)-1)
… …
655# if CORO_STACKGUARD 1094# if CORO_STACKGUARD
656 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1095 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
657# endif 1096# endif
658 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1097 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
659 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1098 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
660 cctx->mapped = 1; 1099 cctx->flags |= CC_MAPPED;
661 } 1100 }
662 else 1101 else
663#endif 1102#endif
664 { 1103 {
665 cctx->ssize = coro_stacksize * (long)sizeof (long); 1104 cctx->ssize = coro_stacksize * (long)sizeof (long);
… …
674 stack_start = cctx->sptr; 1113 stack_start = cctx->sptr;
675 stack_size = cctx->ssize; 1114 stack_size = cctx->ssize;
676 } 1115 }
677 1116
678 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1117 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
679 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1118 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
680 1119
681 return cctx; 1120 return cctx;
682} 1121}
683 1122
684static void 1123static void
… …
686{ 1125{
687 if (!cctx) 1126 if (!cctx)
688 return; 1127 return;
689 1128
690 --cctx_count; 1129 --cctx_count;
1130 coro_destroy (&cctx->cctx);
691 1131
1132 /* coro_transfer creates new, empty cctx's */
1133 if (cctx->sptr)
1134 {
692#if CORO_USE_VALGRIND 1135#if CORO_USE_VALGRIND
693 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1136 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694#endif 1137#endif
695 1138
696#if HAVE_MMAP 1139#if HAVE_MMAP
697 if (cctx->mapped) 1140 if (cctx->flags & CC_MAPPED)
698 munmap (cctx->sptr, cctx->ssize); 1141 munmap (cctx->sptr, cctx->ssize);
699 else 1142 else
700#endif 1143#endif
701 Safefree (cctx->sptr); 1144 Safefree (cctx->sptr);
1145 }
702 1146
703 Safefree (cctx); 1147 Safefree (cctx);
704} 1148}
1149
1150/* wether this cctx should be destructed */
1151#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
705 1152
706static coro_cctx * 1153static coro_cctx *
707cctx_get (pTHX) 1154cctx_get (pTHX)
708{ 1155{
709 while (cctx_first) 1156 while (expect_true (cctx_first))
710 { 1157 {
711 coro_cctx *cctx = cctx_first; 1158 coro_cctx *cctx = cctx_first;
712 cctx_first = cctx->next; 1159 cctx_first = cctx->next;
713 --cctx_idle; 1160 --cctx_idle;
714 1161
715 if (cctx->ssize >= coro_stacksize) 1162 if (expect_true (!CCTX_EXPIRED (cctx)))
716 return cctx; 1163 return cctx;
717 1164
718 cctx_destroy (cctx); 1165 cctx_destroy (cctx);
719 } 1166 }
720 1167
721 PL_op = PL_op->op_next;
722 return cctx_new (); 1168 return cctx_new ();
723} 1169}
724 1170
725static void 1171static void
726cctx_put (coro_cctx *cctx) 1172cctx_put (coro_cctx *cctx)
727{ 1173{
1174 assert (("cctx_put called on non-initialised cctx", cctx->sptr));
1175
728 /* free another cctx if overlimit */ 1176 /* free another cctx if overlimit */
729 if (cctx_idle >= MAX_IDLE_CCTX) 1177 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
730 { 1178 {
731 coro_cctx *first = cctx_first; 1179 coro_cctx *first = cctx_first;
732 cctx_first = first->next; 1180 cctx_first = first->next;
733 --cctx_idle; 1181 --cctx_idle;
734 1182
735 assert (!first->inuse);
736 cctx_destroy (first); 1183 cctx_destroy (first);
737 } 1184 }
738 1185
739 ++cctx_idle; 1186 ++cctx_idle;
740 cctx->next = cctx_first; 1187 cctx->next = cctx_first;
741 cctx_first = cctx; 1188 cctx_first = cctx;
742} 1189}
743 1190
744/** coroutine switching *****************************************************/ 1191/** coroutine switching *****************************************************/
745 1192
746/* never call directly, always through the coro_state_transfer global variable */ 1193static void
1194transfer_check (pTHX_ struct coro *prev, struct coro *next)
1195{
1196 if (expect_true (prev != next))
1197 {
1198 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1199 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1200
1201 if (expect_false (next->flags & CF_RUNNING))
1202 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1203
1204 if (expect_false (next->flags & CF_DESTROYED))
1205 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1206
1207#if !PERL_VERSION_ATLEAST (5,10,0)
1208 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1209 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1210#endif
1211 }
1212}
1213
1214/* always use the TRANSFER macro */
747static void NOINLINE 1215static void NOINLINE
748transfer (pTHX_ struct coro *prev, struct coro *next) 1216transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
749{ 1217{
750 dSTACKLEVEL; 1218 dSTACKLEVEL;
751 1219
752 /* sometimes transfer is only called to set idle_sp */ 1220 /* sometimes transfer is only called to set idle_sp */
753 if (!next) 1221 if (expect_false (!next))
754 { 1222 {
755 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1223 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
756 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1224 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
757 } 1225 }
758 else if (prev != next) 1226 else if (expect_true (prev != next))
759 { 1227 {
1228 static volatile int has_throw;
760 coro_cctx *prev__cctx; 1229 coro_cctx *prev__cctx;
761 1230
762 if (prev->flags & CF_NEW) 1231 if (expect_false (prev->flags & CF_NEW))
763 { 1232 {
764 /* create a new empty context */ 1233 /* create a new empty/source context */
1234 ++cctx_count;
765 Newz (0, prev->cctx, 1, coro_cctx); 1235 New (0, prev->cctx, 1, coro_cctx);
766 prev->cctx->inuse = 1; 1236 prev->cctx->sptr = 0;
1237 coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
1238
767 prev->flags &= ~CF_NEW; 1239 prev->flags &= ~CF_NEW;
768 prev->flags |= CF_RUNNING; 1240 prev->flags |= CF_RUNNING;
769 } 1241 }
770 1242
771 /*TODO: must not croak here */
772 if (!prev->flags & CF_RUNNING)
773 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
774
775 if (next->flags & CF_RUNNING)
776 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
777
778 if (next->flags & CF_DESTROYED)
779 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
780
781 prev->flags &= ~CF_RUNNING; 1243 prev->flags &= ~CF_RUNNING;
782 next->flags |= CF_RUNNING; 1244 next->flags |= CF_RUNNING;
783 1245
784 LOCK; 1246 LOCK;
785 1247
1248 /* first get rid of the old state */
1249 save_perl (aTHX_ prev);
1250
786 if (next->flags & CF_NEW) 1251 if (expect_false (next->flags & CF_NEW))
787 { 1252 {
788 /* need to start coroutine */ 1253 /* need to start coroutine */
789 next->flags &= ~CF_NEW; 1254 next->flags &= ~CF_NEW;
790 /* first get rid of the old state */
791 save_perl (aTHX_ prev);
792 /* setup coroutine call */ 1255 /* setup coroutine call */
793 setup_coro (aTHX_ next); 1256 coro_setup (aTHX_ next);
794 /* need a new stack */
795 assert (!next->cctx);
796 } 1257 }
797 else 1258 else
798 {
799 /* coroutine already started */
800 save_perl (aTHX_ prev);
801 load_perl (aTHX_ next); 1259 load_perl (aTHX_ next);
802 }
803 1260
804 prev__cctx = prev->cctx; 1261 prev__cctx = prev->cctx;
805 1262
806 /* possibly "free" the cctx */ 1263 /* possibly "free" the cctx */
1264 if (expect_true (
807 if (prev__cctx->idle_sp == STACKLEVEL) 1265 prev__cctx->idle_sp == STACKLEVEL
1266 && !(prev__cctx->flags & CC_TRACE)
1267 && !force_cctx
1268 ))
808 { 1269 {
809 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1270 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
810 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1271 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
811 1272
812 prev->cctx = 0; 1273 prev->cctx = 0;
813 1274
1275 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1276 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1277 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1278 if (!next->cctx)
1279 next->cctx = cctx_get (aTHX);
1280
814 cctx_put (prev__cctx); 1281 cctx_put (prev__cctx);
815 prev__cctx->inuse = 0;
816 } 1282 }
817 1283
1284 ++next->usecount;
1285
818 if (!next->cctx) 1286 if (expect_true (!next->cctx))
819 {
820 next->cctx = cctx_get (aTHX); 1287 next->cctx = cctx_get (aTHX);
821 assert (!next->cctx->inuse);
822 next->cctx->inuse = 1;
823 }
824 1288
1289 has_throw = !!next->throw;
1290
825 if (prev__cctx != next->cctx) 1291 if (expect_false (prev__cctx != next->cctx))
826 { 1292 {
827 prev__cctx->top_env = PL_top_env; 1293 prev__cctx->top_env = PL_top_env;
828 PL_top_env = next->cctx->top_env; 1294 PL_top_env = next->cctx->top_env;
829 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1295 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
830 } 1296 }
831 1297
832 free_coro_mortal (aTHX); 1298 free_coro_mortal (aTHX);
833 UNLOCK; 1299 UNLOCK;
1300
1301 if (expect_false (has_throw))
1302 {
1303 struct coro *coro = SvSTATE (coro_current);
1304
1305 if (coro->throw)
1306 {
1307 SV *exception = coro->throw;
1308 coro->throw = 0;
1309 sv_setsv (ERRSV, exception);
1310 croak (0);
1311 }
1312 }
834 } 1313 }
835} 1314}
836 1315
837struct transfer_args 1316struct transfer_args
838{ 1317{
839 struct coro *prev, *next; 1318 struct coro *prev, *next;
840}; 1319};
841 1320
1321#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
842#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1322#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
843 1323
844/** high level stuff ********************************************************/ 1324/** high level stuff ********************************************************/
845 1325
846static int 1326static int
847coro_state_destroy (pTHX_ struct coro *coro) 1327coro_state_destroy (pTHX_ struct coro *coro)
… …
864 1344
865 if (coro->mainstack && coro->mainstack != main_mainstack) 1345 if (coro->mainstack && coro->mainstack != main_mainstack)
866 { 1346 {
867 struct coro temp; 1347 struct coro temp;
868 1348
869 assert (!(coro->flags & CF_RUNNING));
870
871 Zero (&temp, 1, struct coro);
872 temp.save = CORO_SAVE_DEF;
873
874 if (coro->flags & CF_RUNNING) 1349 if (coro->flags & CF_RUNNING)
875 croak ("FATAL: tried to destroy currently running coroutine"); 1350 croak ("FATAL: tried to destroy currently running coroutine");
876 1351
877 save_perl (aTHX_ &temp); 1352 save_perl (aTHX_ &temp);
878 load_perl (aTHX_ coro); 1353 load_perl (aTHX_ coro);
879 1354
880 coro_destroy_stacks (aTHX); 1355 coro_destruct (aTHX_ coro);
881 1356
882 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1357 load_perl (aTHX_ &temp);
883 1358
884 coro->mainstack = 0; 1359 coro->slot = 0;
885 } 1360 }
886 1361
887 cctx_destroy (coro->cctx); 1362 cctx_destroy (coro->cctx);
888 SvREFCNT_dec (coro->args); 1363 SvREFCNT_dec (coro->args);
889 1364
1365 if (coro->next) coro->next->prev = coro->prev;
1366 if (coro->prev) coro->prev->next = coro->next;
1367 if (coro == coro_first) coro_first = coro->next;
1368
890 return 1; 1369 return 1;
891} 1370}
892 1371
893static int 1372static int
894coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1373coro_state_free (pTHX_ SV *sv, MAGIC *mg)
895{ 1374{
896 struct coro *coro = (struct coro *)mg->mg_ptr; 1375 struct coro *coro = (struct coro *)mg->mg_ptr;
897 mg->mg_ptr = 0; 1376 mg->mg_ptr = 0;
1377
1378 coro->hv = 0;
898 1379
899 if (--coro->refcnt < 0) 1380 if (--coro->refcnt < 0)
900 { 1381 {
901 coro_state_destroy (aTHX_ coro); 1382 coro_state_destroy (aTHX_ coro);
902 Safefree (coro); 1383 Safefree (coro);
… …
924#else 1405#else
925# define MGf_DUP 0 1406# define MGf_DUP 0
926#endif 1407#endif
927}; 1408};
928 1409
929static struct coro *
930SvSTATE_ (pTHX_ SV *coro)
931{
932 HV *stash;
933 MAGIC *mg;
934
935 if (SvROK (coro))
936 coro = SvRV (coro);
937
938 stash = SvSTASH (coro);
939 if (stash != coro_stash && stash != coro_state_stash)
940 {
941 /* very slow, but rare, check */
942 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
943 croak ("Coro::State object required");
944 }
945
946 mg = CORO_MAGIC (coro);
947 return (struct coro *)mg->mg_ptr;
948}
949
950#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
951
952static void 1410static void
953prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1411prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
954{ 1412{
955 ta->prev = SvSTATE (prev_sv); 1413 ta->prev = SvSTATE (prev_sv);
956 ta->next = SvSTATE (next_sv); 1414 ta->next = SvSTATE (next_sv);
1415 TRANSFER_CHECK (*ta);
957} 1416}
958 1417
959static void 1418static void
960api_transfer (SV *prev_sv, SV *next_sv) 1419api_transfer (SV *prev_sv, SV *next_sv)
961{ 1420{
962 dTHX; 1421 dTHX;
963 struct transfer_args ta; 1422 struct transfer_args ta;
964 1423
965 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1424 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
966 TRANSFER (ta); 1425 TRANSFER (ta, 1);
967}
968
969static int
970api_save (SV *coro_sv, int new_save)
971{
972 dTHX;
973 struct coro *coro = SvSTATE (coro_sv);
974 int old_save = coro->save;
975
976 if (new_save >= 0)
977 coro->save = new_save;
978
979 return old_save;
980} 1426}
981 1427
982/** Coro ********************************************************************/ 1428/** Coro ********************************************************************/
983 1429
984static void 1430static void
… …
986{ 1432{
987 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1433 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
988} 1434}
989 1435
990static SV * 1436static SV *
991coro_deq (pTHX_ int min_prio) 1437coro_deq (pTHX)
992{ 1438{
993 int prio = PRIO_MAX - PRIO_MIN; 1439 int prio;
994 1440
995 min_prio -= PRIO_MIN;
996 if (min_prio < 0)
997 min_prio = 0;
998
999 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1441 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1000 if (AvFILLp (coro_ready [prio]) >= 0) 1442 if (AvFILLp (coro_ready [prio]) >= 0)
1001 return av_shift (coro_ready [prio]); 1443 return av_shift (coro_ready [prio]);
1002 1444
1003 return 0; 1445 return 0;
1004} 1446}
… …
1006static int 1448static int
1007api_ready (SV *coro_sv) 1449api_ready (SV *coro_sv)
1008{ 1450{
1009 dTHX; 1451 dTHX;
1010 struct coro *coro; 1452 struct coro *coro;
1453 SV *sv_hook;
1454 void (*xs_hook)(void);
1011 1455
1012 if (SvROK (coro_sv)) 1456 if (SvROK (coro_sv))
1013 coro_sv = SvRV (coro_sv); 1457 coro_sv = SvRV (coro_sv);
1014 1458
1015 coro = SvSTATE (coro_sv); 1459 coro = SvSTATE (coro_sv);
… …
1018 return 0; 1462 return 0;
1019 1463
1020 coro->flags |= CF_READY; 1464 coro->flags |= CF_READY;
1021 1465
1022 LOCK; 1466 LOCK;
1467
1468 sv_hook = coro_nready ? 0 : coro_readyhook;
1469 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1470
1023 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1471 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1024 ++coro_nready; 1472 ++coro_nready;
1473
1025 UNLOCK; 1474 UNLOCK;
1475
1476 if (sv_hook)
1477 {
1478 dSP;
1479
1480 ENTER;
1481 SAVETMPS;
1482
1483 PUSHMARK (SP);
1484 PUTBACK;
1485 call_sv (sv_hook, G_DISCARD);
1486 SPAGAIN;
1487
1488 FREETMPS;
1489 LEAVE;
1490 }
1491
1492 if (xs_hook)
1493 xs_hook ();
1026 1494
1027 return 1; 1495 return 1;
1028} 1496}
1029 1497
1030static int 1498static int
… …
1040 SV *prev_sv, *next_sv; 1508 SV *prev_sv, *next_sv;
1041 1509
1042 for (;;) 1510 for (;;)
1043 { 1511 {
1044 LOCK; 1512 LOCK;
1045 next_sv = coro_deq (aTHX_ PRIO_MIN); 1513 next_sv = coro_deq (aTHX);
1046 1514
1047 /* nothing to schedule: call the idle handler */ 1515 /* nothing to schedule: call the idle handler */
1048 if (!next_sv) 1516 if (expect_false (!next_sv))
1049 { 1517 {
1050 dSP; 1518 dSP;
1051 UNLOCK; 1519 UNLOCK;
1052 1520
1053 ENTER; 1521 ENTER;
1054 SAVETMPS; 1522 SAVETMPS;
1055 1523
1056 PUSHMARK (SP); 1524 PUSHMARK (SP);
1057 PUTBACK; 1525 PUTBACK;
1058 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1526 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1527 SPAGAIN;
1059 1528
1060 FREETMPS; 1529 FREETMPS;
1061 LEAVE; 1530 LEAVE;
1062 continue; 1531 continue;
1063 } 1532 }
1064 1533
1065 ta->next = SvSTATE (next_sv); 1534 ta->next = SvSTATE (next_sv);
1066 1535
1067 /* cannot transfer to destroyed coros, skip and look for next */ 1536 /* cannot transfer to destroyed coros, skip and look for next */
1068 if (ta->next->flags & CF_DESTROYED) 1537 if (expect_false (ta->next->flags & CF_DESTROYED))
1069 { 1538 {
1070 UNLOCK; 1539 UNLOCK;
1071 SvREFCNT_dec (next_sv); 1540 SvREFCNT_dec (next_sv);
1072 /* coro_nready is already taken care of by destroy */ 1541 /* coro_nready is already taken care of by destroy */
1073 continue; 1542 continue;
… …
1078 break; 1547 break;
1079 } 1548 }
1080 1549
1081 /* free this only after the transfer */ 1550 /* free this only after the transfer */
1082 prev_sv = SvRV (coro_current); 1551 prev_sv = SvRV (coro_current);
1083 SvRV_set (coro_current, next_sv);
1084 ta->prev = SvSTATE (prev_sv); 1552 ta->prev = SvSTATE (prev_sv);
1085 1553 TRANSFER_CHECK (*ta);
1086 assert (ta->next->flags & CF_READY); 1554 assert (ta->next->flags & CF_READY);
1087 ta->next->flags &= ~CF_READY; 1555 ta->next->flags &= ~CF_READY;
1556 SvRV_set (coro_current, next_sv);
1088 1557
1089 LOCK; 1558 LOCK;
1090 free_coro_mortal (aTHX); 1559 free_coro_mortal (aTHX);
1091 coro_mortal = prev_sv; 1560 coro_mortal = prev_sv;
1092 UNLOCK; 1561 UNLOCK;
… …
1118{ 1587{
1119 dTHX; 1588 dTHX;
1120 struct transfer_args ta; 1589 struct transfer_args ta;
1121 1590
1122 prepare_schedule (aTHX_ &ta); 1591 prepare_schedule (aTHX_ &ta);
1123 TRANSFER (ta); 1592 TRANSFER (ta, 1);
1124} 1593}
1125 1594
1126static int 1595static int
1127api_cede (void) 1596api_cede (void)
1128{ 1597{
1129 dTHX; 1598 dTHX;
1130 struct transfer_args ta; 1599 struct transfer_args ta;
1131 1600
1132 prepare_cede (aTHX_ &ta); 1601 prepare_cede (aTHX_ &ta);
1133 1602
1134 if (ta.prev != ta.next) 1603 if (expect_true (ta.prev != ta.next))
1135 { 1604 {
1136 TRANSFER (ta); 1605 TRANSFER (ta, 1);
1137 return 1; 1606 return 1;
1138 } 1607 }
1139 else 1608 else
1140 return 0; 1609 return 0;
1141} 1610}
… …
1146 dTHX; 1615 dTHX;
1147 struct transfer_args ta; 1616 struct transfer_args ta;
1148 1617
1149 if (prepare_cede_notself (aTHX_ &ta)) 1618 if (prepare_cede_notself (aTHX_ &ta))
1150 { 1619 {
1151 TRANSFER (ta); 1620 TRANSFER (ta, 1);
1152 return 1; 1621 return 1;
1153 } 1622 }
1154 else 1623 else
1155 return 0; 1624 return 0;
1156} 1625}
1157 1626
1627static void
1628api_trace (SV *coro_sv, int flags)
1629{
1630 dTHX;
1631 struct coro *coro = SvSTATE (coro_sv);
1632
1633 if (flags & CC_TRACE)
1634 {
1635 if (!coro->cctx)
1636 coro->cctx = cctx_new ();
1637 else if (!(coro->cctx->flags & CC_TRACE))
1638 croak ("cannot enable tracing on coroutine with custom stack");
1639
1640 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1641 }
1642 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1643 {
1644 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1645
1646 if (coro->flags & CF_RUNNING)
1647 PL_runops = RUNOPS_DEFAULT;
1648 else
1649 coro->slot->runops = RUNOPS_DEFAULT;
1650 }
1651}
1652
1653static int
1654coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1655{
1656 AV *padlist;
1657 AV *av = (AV *)mg->mg_obj;
1658
1659 abort ();
1660
1661 return 0;
1662}
1663
1664static MGVTBL coro_gensub_vtbl = {
1665 0, 0, 0, 0,
1666 coro_gensub_free
1667};
1668
1669/*****************************************************************************/
1670/* PerlIO::cede */
1671
1672typedef struct
1673{
1674 PerlIOBuf base;
1675 NV next, every;
1676} PerlIOCede;
1677
1678static IV
1679PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1680{
1681 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1682
1683 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1684 self->next = nvtime () + self->every;
1685
1686 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1687}
1688
1689static SV *
1690PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1691{
1692 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1693
1694 return newSVnv (self->every);
1695}
1696
1697static IV
1698PerlIOCede_flush (pTHX_ PerlIO *f)
1699{
1700 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1701 double now = nvtime ();
1702
1703 if (now >= self->next)
1704 {
1705 api_cede ();
1706 self->next = now + self->every;
1707 }
1708
1709 return PerlIOBuf_flush (aTHX_ f);
1710}
1711
1712static PerlIO_funcs PerlIO_cede =
1713{
1714 sizeof(PerlIO_funcs),
1715 "cede",
1716 sizeof(PerlIOCede),
1717 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1718 PerlIOCede_pushed,
1719 PerlIOBuf_popped,
1720 PerlIOBuf_open,
1721 PerlIOBase_binmode,
1722 PerlIOCede_getarg,
1723 PerlIOBase_fileno,
1724 PerlIOBuf_dup,
1725 PerlIOBuf_read,
1726 PerlIOBuf_unread,
1727 PerlIOBuf_write,
1728 PerlIOBuf_seek,
1729 PerlIOBuf_tell,
1730 PerlIOBuf_close,
1731 PerlIOCede_flush,
1732 PerlIOBuf_fill,
1733 PerlIOBase_eof,
1734 PerlIOBase_error,
1735 PerlIOBase_clearerr,
1736 PerlIOBase_setlinebuf,
1737 PerlIOBuf_get_base,
1738 PerlIOBuf_bufsiz,
1739 PerlIOBuf_get_ptr,
1740 PerlIOBuf_get_cnt,
1741 PerlIOBuf_set_ptrcnt,
1742};
1743
1744
1158MODULE = Coro::State PACKAGE = Coro::State 1745MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1159 1746
1160PROTOTYPES: DISABLE 1747PROTOTYPES: DISABLE
1161 1748
1162BOOT: 1749BOOT:
1163{ 1750{
1164#ifdef USE_ITHREADS 1751#ifdef USE_ITHREADS
1165 MUTEX_INIT (&coro_mutex); 1752 MUTEX_INIT (&coro_lock);
1166#endif 1753#endif
1167 BOOT_PAGESIZE; 1754 BOOT_PAGESIZE;
1168 1755
1756 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1757 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1758
1759 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1760 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1761 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1762
1763 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1764 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1765 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1766
1169 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1767 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1170 1768
1171 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1769 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1172 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 1770 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1173 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1174 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1175 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1176 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); 1771 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1177 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1772 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1178 1773
1179 main_mainstack = PL_mainstack; 1774 main_mainstack = PL_mainstack;
1775 main_top_env = PL_top_env;
1180 1776
1777 while (main_top_env->je_prev)
1778 main_top_env = main_top_env->je_prev;
1779
1181 coroapi.ver = CORO_API_VERSION; 1780 coroapi.ver = CORO_API_VERSION;
1781 coroapi.rev = CORO_API_REVISION;
1182 coroapi.transfer = api_transfer; 1782 coroapi.transfer = api_transfer;
1783
1784 {
1785 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1786
1787 if (!svp) croak ("Time::HiRes is required");
1788 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1789
1790 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1791 }
1183 1792
1184 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1793 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1185} 1794}
1186 1795
1187SV * 1796SV *
1188new (char *klass, ...) 1797new (char *klass, ...)
1189 CODE: 1798 CODE:
1190{ 1799{
1191 struct coro *coro; 1800 struct coro *coro;
1801 MAGIC *mg;
1192 HV *hv; 1802 HV *hv;
1193 int i; 1803 int i;
1194 1804
1195 Newz (0, coro, 1, struct coro); 1805 Newz (0, coro, 1, struct coro);
1196 coro->args = newAV (); 1806 coro->args = newAV ();
1197 coro->save = CORO_SAVE_DEF;
1198 coro->flags = CF_NEW; 1807 coro->flags = CF_NEW;
1199 1808
1809 if (coro_first) coro_first->prev = coro;
1810 coro->next = coro_first;
1811 coro_first = coro;
1812
1200 hv = newHV (); 1813 coro->hv = hv = newHV ();
1201 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1814 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1815 mg->mg_flags |= MGf_DUP;
1202 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1816 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1203 1817
1818 av_extend (coro->args, items - 1);
1204 for (i = 1; i < items; i++) 1819 for (i = 1; i < items; i++)
1205 av_push (coro->args, newSVsv (ST (i))); 1820 av_push (coro->args, newSVsv (ST (i)));
1206} 1821}
1207 OUTPUT: 1822 OUTPUT:
1208 RETVAL 1823 RETVAL
1209 1824
1210int 1825# these not obviously related functions are all rolled into the same xs
1211save (SV *coro, int new_save = -1) 1826# function to increase chances that they all will call transfer with the same
1212 CODE: 1827# stack offset
1213 RETVAL = api_save (coro, new_save);
1214 OUTPUT:
1215 RETVAL
1216
1217int
1218save_also (SV *coro_sv, int save_also)
1219 CODE:
1220{
1221 struct coro *coro = SvSTATE (coro_sv);
1222 RETVAL = coro->save;
1223 coro->save |= save_also;
1224}
1225 OUTPUT:
1226 RETVAL
1227
1228void 1828void
1229_set_stacklevel (...) 1829_set_stacklevel (...)
1230 ALIAS: 1830 ALIAS:
1231 Coro::State::transfer = 1 1831 Coro::State::transfer = 1
1232 Coro::schedule = 2 1832 Coro::schedule = 2
… …
1234 Coro::cede_notself = 4 1834 Coro::cede_notself = 4
1235 CODE: 1835 CODE:
1236{ 1836{
1237 struct transfer_args ta; 1837 struct transfer_args ta;
1238 1838
1839 PUTBACK;
1239 switch (ix) 1840 switch (ix)
1240 { 1841 {
1241 case 0: 1842 case 0:
1242 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1843 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1243 ta.next = 0; 1844 ta.next = 0;
1244 break; 1845 break;
1245 1846
1246 case 1: 1847 case 1:
1247 if (items != 2) 1848 if (items != 2)
1248 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1849 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1249 1850
1250 prepare_transfer (aTHX_ &ta, ST (0), ST (1)); 1851 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1251 break; 1852 break;
1252 1853
1253 case 2: 1854 case 2:
… …
1262 if (!prepare_cede_notself (aTHX_ &ta)) 1863 if (!prepare_cede_notself (aTHX_ &ta))
1263 XSRETURN_EMPTY; 1864 XSRETURN_EMPTY;
1264 1865
1265 break; 1866 break;
1266 } 1867 }
1868 SPAGAIN;
1267 1869
1268 BARRIER; 1870 BARRIER;
1871 PUTBACK;
1269 TRANSFER (ta); 1872 TRANSFER (ta, 0);
1270 1873 SPAGAIN; /* might be the sp of a different coroutine now */
1271 if (GIMME_V != G_VOID && ta.next != ta.prev) 1874 /* be extra careful not to ever do anything after TRANSFER */
1272 XSRETURN_YES;
1273} 1875}
1274 1876
1275bool 1877bool
1276_destroy (SV *coro_sv) 1878_destroy (SV *coro_sv)
1277 CODE: 1879 CODE:
1278 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 1880 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1279 OUTPUT: 1881 OUTPUT:
1280 RETVAL 1882 RETVAL
1281 1883
1282void 1884void
1283_exit (code) 1885_exit (int code)
1284 int code
1285 PROTOTYPE: $ 1886 PROTOTYPE: $
1286 CODE: 1887 CODE:
1287 _exit (code); 1888 _exit (code);
1288 1889
1289int 1890int
… …
1307 CODE: 1908 CODE:
1308 RETVAL = cctx_idle; 1909 RETVAL = cctx_idle;
1309 OUTPUT: 1910 OUTPUT:
1310 RETVAL 1911 RETVAL
1311 1912
1913void
1914list ()
1915 PPCODE:
1916{
1917 struct coro *coro;
1918 for (coro = coro_first; coro; coro = coro->next)
1919 if (coro->hv)
1920 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1921}
1922
1923void
1924call (Coro::State coro, SV *coderef)
1925 ALIAS:
1926 eval = 1
1927 CODE:
1928{
1929 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1930 {
1931 struct coro temp;
1932
1933 if (!(coro->flags & CF_RUNNING))
1934 {
1935 PUTBACK;
1936 save_perl (aTHX_ &temp);
1937 load_perl (aTHX_ coro);
1938 }
1939
1940 {
1941 dSP;
1942 ENTER;
1943 SAVETMPS;
1944 PUTBACK;
1945 PUSHSTACK;
1946 PUSHMARK (SP);
1947
1948 if (ix)
1949 eval_sv (coderef, 0);
1950 else
1951 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1952
1953 POPSTACK;
1954 SPAGAIN;
1955 FREETMPS;
1956 LEAVE;
1957 PUTBACK;
1958 }
1959
1960 if (!(coro->flags & CF_RUNNING))
1961 {
1962 save_perl (aTHX_ coro);
1963 load_perl (aTHX_ &temp);
1964 SPAGAIN;
1965 }
1966 }
1967}
1968
1969SV *
1970is_ready (Coro::State coro)
1971 PROTOTYPE: $
1972 ALIAS:
1973 is_ready = CF_READY
1974 is_running = CF_RUNNING
1975 is_new = CF_NEW
1976 is_destroyed = CF_DESTROYED
1977 CODE:
1978 RETVAL = boolSV (coro->flags & ix);
1979 OUTPUT:
1980 RETVAL
1981
1982void
1983api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1984
1985SV *
1986has_cctx (Coro::State coro)
1987 PROTOTYPE: $
1988 CODE:
1989 RETVAL = boolSV (!!coro->cctx);
1990 OUTPUT:
1991 RETVAL
1992
1993int
1994is_traced (Coro::State coro)
1995 PROTOTYPE: $
1996 CODE:
1997 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1998 OUTPUT:
1999 RETVAL
2000
2001IV
2002rss (Coro::State coro)
2003 PROTOTYPE: $
2004 ALIAS:
2005 usecount = 1
2006 CODE:
2007 switch (ix)
2008 {
2009 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2010 case 1: RETVAL = coro->usecount; break;
2011 }
2012 OUTPUT:
2013 RETVAL
2014
2015void
2016force_cctx ()
2017 CODE:
2018 struct coro *coro = SvSTATE (coro_current);
2019 coro->cctx->idle_sp = 0;
2020
2021void
2022swap_defsv (Coro::State self)
2023 PROTOTYPE: $
2024 ALIAS:
2025 swap_defav = 1
2026 CODE:
2027 if (!self->slot)
2028 croak ("cannot swap state with coroutine that has no saved state");
2029 else
2030 {
2031 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2032 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2033
2034 SV *tmp = *src; *src = *dst; *dst = tmp;
2035 }
2036
1312MODULE = Coro::State PACKAGE = Coro 2037MODULE = Coro::State PACKAGE = Coro
1313 2038
1314BOOT: 2039BOOT:
1315{ 2040{
1316 int i; 2041 int i;
1317 2042
2043 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2044 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2045 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2046
2047 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2048 SvREADONLY_on (coro_current);
2049
1318 coro_stash = gv_stashpv ("Coro", TRUE); 2050 coro_stash = gv_stashpv ("Coro", TRUE);
1319 2051
1320 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2052 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1321 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2053 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1322 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2054 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1323 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2055 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1324 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2056 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1325 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2057 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1326 2058
1327 coro_current = get_sv ("Coro::current", FALSE);
1328 SvREADONLY_on (coro_current);
1329
1330 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2059 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1331 coro_ready[i] = newAV (); 2060 coro_ready[i] = newAV ();
1332 2061
1333 { 2062 {
1334 SV *sv = perl_get_sv("Coro::API", 1); 2063 SV *sv = perl_get_sv ("Coro::API", TRUE);
2064 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1335 2065
1336 coroapi.schedule = api_schedule; 2066 coroapi.schedule = api_schedule;
1337 coroapi.save = api_save;
1338 coroapi.cede = api_cede; 2067 coroapi.cede = api_cede;
1339 coroapi.cede_notself = api_cede_notself; 2068 coroapi.cede_notself = api_cede_notself;
1340 coroapi.ready = api_ready; 2069 coroapi.ready = api_ready;
1341 coroapi.is_ready = api_is_ready; 2070 coroapi.is_ready = api_is_ready;
1342 coroapi.nready = &coro_nready; 2071 coroapi.nready = &coro_nready;
… …
1351void 2080void
1352_set_current (SV *current) 2081_set_current (SV *current)
1353 PROTOTYPE: $ 2082 PROTOTYPE: $
1354 CODE: 2083 CODE:
1355 SvREFCNT_dec (SvRV (coro_current)); 2084 SvREFCNT_dec (SvRV (coro_current));
1356 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2085 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2086
2087void
2088_set_readyhook (SV *hook)
2089 PROTOTYPE: $
2090 CODE:
2091 LOCK;
2092 SvREFCNT_dec (coro_readyhook);
2093 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2094 UNLOCK;
1357 2095
1358int 2096int
1359prio (Coro::State coro, int newprio = 0) 2097prio (Coro::State coro, int newprio = 0)
1360 ALIAS: 2098 ALIAS:
1361 nice = 1 2099 nice = 1
… …
1383 CODE: 2121 CODE:
1384 RETVAL = boolSV (api_ready (self)); 2122 RETVAL = boolSV (api_ready (self));
1385 OUTPUT: 2123 OUTPUT:
1386 RETVAL 2124 RETVAL
1387 2125
1388SV *
1389is_ready (SV *self)
1390 PROTOTYPE: $
1391 CODE:
1392 RETVAL = boolSV (api_is_ready (self));
1393 OUTPUT:
1394 RETVAL
1395
1396int 2126int
1397nready (...) 2127nready (...)
1398 PROTOTYPE: 2128 PROTOTYPE:
1399 CODE: 2129 CODE:
1400 RETVAL = coro_nready; 2130 RETVAL = coro_nready;
1401 OUTPUT: 2131 OUTPUT:
1402 RETVAL 2132 RETVAL
1403 2133
2134void
2135throw (Coro::State self, SV *throw = &PL_sv_undef)
2136 PROTOTYPE: $;$
2137 CODE:
2138 SvREFCNT_dec (self->throw);
2139 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2140
2141# for async_pool speedup
2142void
2143_pool_1 (SV *cb)
2144 CODE:
2145{
2146 struct coro *coro = SvSTATE (coro_current);
2147 HV *hv = (HV *)SvRV (coro_current);
2148 AV *defav = GvAV (PL_defgv);
2149 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2150 AV *invoke_av;
2151 int i, len;
2152
2153 if (!invoke)
2154 {
2155 SV *old = PL_diehook;
2156 PL_diehook = 0;
2157 SvREFCNT_dec (old);
2158 croak ("\3async_pool terminate\2\n");
2159 }
2160
2161 SvREFCNT_dec (coro->saved_deffh);
2162 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2163
2164 hv_store (hv, "desc", sizeof ("desc") - 1,
2165 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2166
2167 invoke_av = (AV *)SvRV (invoke);
2168 len = av_len (invoke_av);
2169
2170 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2171
2172 if (len > 0)
2173 {
2174 av_fill (defav, len - 1);
2175 for (i = 0; i < len; ++i)
2176 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2177 }
2178
2179 SvREFCNT_dec (invoke);
2180}
2181
2182void
2183_pool_2 (SV *cb)
2184 CODE:
2185{
2186 struct coro *coro = SvSTATE (coro_current);
2187
2188 sv_setsv (cb, &PL_sv_undef);
2189
2190 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2191 coro->saved_deffh = 0;
2192
2193 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2194 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2195 {
2196 SV *old = PL_diehook;
2197 PL_diehook = 0;
2198 SvREFCNT_dec (old);
2199 croak ("\3async_pool terminate\2\n");
2200 }
2201
2202 av_clear (GvAV (PL_defgv));
2203 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2204 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2205
2206 coro->prio = 0;
2207
2208 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2209 api_trace (coro_current, 0);
2210
2211 av_push (av_async_pool, newSVsv (coro_current));
2212}
2213
2214#if 0
2215
2216void
2217_generator_call (...)
2218 PROTOTYPE: @
2219 PPCODE:
2220 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2221 xxxx
2222 abort ();
2223
2224SV *
2225gensub (SV *sub, ...)
2226 PROTOTYPE: &;@
2227 CODE:
2228{
2229 struct coro *coro;
2230 MAGIC *mg;
2231 CV *xcv;
2232 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2233 int i;
2234
2235 CvGV (ncv) = CvGV (cv);
2236 CvFILE (ncv) = CvFILE (cv);
2237
2238 Newz (0, coro, 1, struct coro);
2239 coro->args = newAV ();
2240 coro->flags = CF_NEW;
2241
2242 av_extend (coro->args, items - 1);
2243 for (i = 1; i < items; i++)
2244 av_push (coro->args, newSVsv (ST (i)));
2245
2246 CvISXSUB_on (ncv);
2247 CvXSUBANY (ncv).any_ptr = (void *)coro;
2248
2249 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2250
2251 CvXSUB (ncv) = CvXSUB (xcv);
2252 CvANON_on (ncv);
2253
2254 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2255 RETVAL = newRV_noinc ((SV *)ncv);
2256}
2257 OUTPUT:
2258 RETVAL
2259
2260#endif
2261
2262
1404MODULE = Coro::State PACKAGE = Coro::AIO 2263MODULE = Coro::State PACKAGE = Coro::AIO
1405 2264
1406SV * 2265void
1407_get_state () 2266_get_state (SV *self)
1408 CODE: 2267 PPCODE:
1409{ 2268{
1410 struct io_state *data; 2269 AV *defav = GvAV (PL_defgv);
1411 2270 AV *av = newAV ();
2271 int i;
1412 RETVAL = newSV (sizeof (struct io_state)); 2272 SV *data_sv = newSV (sizeof (struct io_state));
1413 data = (struct io_state *)SvPVX (RETVAL); 2273 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1414 SvCUR_set (RETVAL, sizeof (struct io_state)); 2274 SvCUR_set (data_sv, sizeof (struct io_state));
1415 SvPOK_only (RETVAL); 2275 SvPOK_only (data_sv);
1416 2276
1417 data->errorno = errno; 2277 data->errorno = errno;
1418 data->laststype = PL_laststype; 2278 data->laststype = PL_laststype;
1419 data->laststatval = PL_laststatval; 2279 data->laststatval = PL_laststatval;
1420 data->statcache = PL_statcache; 2280 data->statcache = PL_statcache;
2281
2282 av_extend (av, AvFILLp (defav) + 1 + 1);
2283
2284 for (i = 0; i <= AvFILLp (defav); ++i)
2285 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2286
2287 av_push (av, data_sv);
2288
2289 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2290
2291 api_ready (self);
1421} 2292}
1422 OUTPUT:
1423 RETVAL
1424 2293
1425void 2294void
1426_set_state (char *data_) 2295_set_state (SV *state)
1427 PROTOTYPE: $ 2296 PROTOTYPE: $
1428 CODE: 2297 PPCODE:
1429{ 2298{
1430 struct io_state *data = (void *)data_; 2299 AV *av = (AV *)SvRV (state);
2300 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2301 int i;
1431 2302
1432 errno = data->errorno; 2303 errno = data->errorno;
1433 PL_laststype = data->laststype; 2304 PL_laststype = data->laststype;
1434 PL_laststatval = data->laststatval; 2305 PL_laststatval = data->laststatval;
1435 PL_statcache = data->statcache; 2306 PL_statcache = data->statcache;
1436}
1437 2307
2308 EXTEND (SP, AvFILLp (av));
2309 for (i = 0; i < AvFILLp (av); ++i)
2310 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2311}
2312
2313
2314MODULE = Coro::State PACKAGE = Coro::AnyEvent
2315
2316BOOT:
2317 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2318
2319SV *
2320_schedule (...)
2321 PROTOTYPE: @
2322 CODE:
2323{
2324 static int incede;
2325
2326 api_cede_notself ();
2327
2328 ++incede;
2329 while (coro_nready >= incede && api_cede ())
2330 ;
2331
2332 sv_setsv (sv_activity, &PL_sv_undef);
2333 if (coro_nready >= incede)
2334 {
2335 PUSHMARK (SP);
2336 PUTBACK;
2337 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2338 SPAGAIN;
2339 }
2340
2341 --incede;
2342}
2343
2344
2345MODULE = Coro::State PACKAGE = PerlIO::cede
2346
2347BOOT:
2348 PerlIO_define_layer (aTHX_ &PerlIO_cede);

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