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Comparing Coro/Coro/State.xs (file contents):
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC vs.
Revision 1.201 by root, Mon Oct 8 01:23:14 2007 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2
3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
2 5
3#include "EXTERN.h" 6#include "EXTERN.h"
4#include "perl.h" 7#include "perl.h"
5#include "XSUB.h" 8#include "XSUB.h"
6 9
… …
31#else 34#else
32# define PAGESIZE 0 35# define PAGESIZE 0
33# define BOOT_PAGESIZE (void)0 36# define BOOT_PAGESIZE (void)0
34#endif 37#endif
35 38
36#if USE_VALGRIND 39#if CORO_USE_VALGRIND
37# include <valgrind/valgrind.h> 40# include <valgrind/valgrind.h>
41# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
42#else
43# define REGISTER_STACK(cctx,start,end)
38#endif 44#endif
39 45
40/* the maximum number of idle cctx that will be pooled */ 46/* the maximum number of idle cctx that will be pooled */
41#define MAX_IDLE_CCTX 8 47#define MAX_IDLE_CCTX 8
42 48
… …
70/* 5.8.7 */ 76/* 5.8.7 */
71#ifndef SvRV_set 77#ifndef SvRV_set
72# define SvRV_set(s,v) SvRV(s) = (v) 78# define SvRV_set(s,v) SvRV(s) = (v)
73#endif 79#endif
74 80
81/* 5.8.8 */
82#ifndef GV_NOTQUAL
83# define GV_NOTQUAL 0
84#endif
85#ifndef newSV
86# define newSV(l) NEWSV(0,l)
87#endif
88
75#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 89#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76# undef STACKGUARD 90# undef CORO_STACKGUARD
77#endif 91#endif
78 92
79#ifndef STACKGUARD 93#ifndef CORO_STACKGUARD
80# define STACKGUARD 0 94# define CORO_STACKGUARD 0
81#endif 95#endif
82 96
83/* prefer perl internal functions over our own? */ 97/* prefer perl internal functions over our own? */
84#ifndef PREFER_PERL_FUNCTIONS 98#ifndef CORO_PREFER_PERL_FUNCTIONS
85# define PREFER_PERL_FUNCTIONS 0 99# define CORO_PREFER_PERL_FUNCTIONS 0
86#endif 100#endif
87 101
88/* The next macro should declare a variable stacklevel that contains and approximation 102/* The next macros try to return the current stack pointer, in an as
89 * to the current C stack pointer. Its property is that it changes with each call 103 * portable way as possible. */
90 * and should be unique. */
91#define dSTACKLEVEL int stacklevel 104#define dSTACKLEVEL volatile char stacklevel
92#define STACKLEVEL ((void *)&stacklevel) 105#define STACKLEVEL ((void *)&stacklevel)
93 106
94#define IN_DESTRUCT (PL_main_cv == Nullcv) 107#define IN_DESTRUCT (PL_main_cv == Nullcv)
95 108
96#if __GNUC__ >= 3 109#if __GNUC__ >= 3
97# define attribute(x) __attribute__(x) 110# define attribute(x) __attribute__(x)
98# define BARRIER __asm__ __volatile__ ("" : : : "memory") 111# define BARRIER __asm__ __volatile__ ("" : : : "memory")
112# define expect(expr,value) __builtin_expect ((expr),(value))
99#else 113#else
100# define attribute(x) 114# define attribute(x)
101# define BARRIER 115# define BARRIER
116# define expect(expr,value) (expr)
102#endif 117#endif
118
119#define expect_false(expr) expect ((expr) != 0, 0)
120#define expect_true(expr) expect ((expr) != 0, 1)
103 121
104#define NOINLINE attribute ((noinline)) 122#define NOINLINE attribute ((noinline))
105 123
106#include "CoroAPI.h" 124#include "CoroAPI.h"
107 125
… …
112#else 130#else
113# define LOCK (void)0 131# define LOCK (void)0
114# define UNLOCK (void)0 132# define UNLOCK (void)0
115#endif 133#endif
116 134
135#define strpair(const) const, sizeof (const) - 1
136
137/* helper storage struct for Coro::AIO */
117struct io_state 138struct io_state
118{ 139{
119 int errorno; 140 int errorno;
120 I32 laststype; 141 I32 laststype;
121 int laststatval; 142 int laststatval;
122 Stat_t statcache; 143 Stat_t statcache;
123}; 144};
124 145
146static size_t coro_stacksize = CORO_STACKSIZE;
125static struct CoroAPI coroapi; 147static struct CoroAPI coroapi;
126static AV *main_mainstack; /* used to differentiate between $main and others */ 148static AV *main_mainstack; /* used to differentiate between $main and others */
149static JMPENV *main_top_env;
127static HV *coro_state_stash, *coro_stash; 150static HV *coro_state_stash, *coro_stash;
128static SV *coro_mortal; /* will be freed after next transfer */ 151static SV *coro_mortal; /* will be freed after next transfer */
129 152
153static GV *irsgv; /* $/ */
154static GV *stdoutgv; /* *STDOUT */
155
156static HV *hv_sig; /* %SIG */
157static SV *sv_diehook;
158static SV *sv_warnhook;
159
160/* async_pool helper stuff */
161static SV *sv_pool_rss;
162static SV *sv_pool_size;
163static AV *av_async_pool;
164
130static struct coro_cctx *cctx_first; 165static struct coro_cctx *cctx_first;
131static int cctx_count, cctx_idle; 166static int cctx_count, cctx_idle;
167
168enum {
169 CC_MAPPED = 0x01,
170 CC_NOREUSE = 0x02, /* throw this away after tracing */
171 CC_TRACE = 0x04,
172 CC_TRACE_SUB = 0x08, /* trace sub calls */
173 CC_TRACE_LINE = 0x10, /* trace each statement */
174 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
175};
132 176
133/* this is a structure representing a c-level coroutine */ 177/* this is a structure representing a c-level coroutine */
134typedef struct coro_cctx { 178typedef struct coro_cctx {
135 struct coro_cctx *next; 179 struct coro_cctx *next;
136 180
137 /* the stack */ 181 /* the stack */
138 void *sptr; 182 void *sptr;
139 long ssize; /* positive == mmap, otherwise malloc */ 183 size_t ssize;
140 184
141 /* cpu state */ 185 /* cpu state */
142 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 186 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
187 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
143 JMPENV *top_env; 188 JMPENV *top_env;
144 coro_context cctx; 189 coro_context cctx;
145 190
146 int inuse;
147
148#if USE_VALGRIND 191#if CORO_USE_VALGRIND
149 int valgrind_id; 192 int valgrind_id;
150#endif 193#endif
194 unsigned char flags;
151} coro_cctx; 195} coro_cctx;
152 196
153enum { 197enum {
154 CF_RUNNING = 0x0001, /* coroutine is running */ 198 CF_RUNNING = 0x0001, /* coroutine is running */
155 CF_READY = 0x0002, /* coroutine is ready */ 199 CF_READY = 0x0002, /* coroutine is ready */
156 CF_NEW = 0x0004, /* ahs never been switched to */ 200 CF_NEW = 0x0004, /* has never been switched to */
201 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
157}; 202};
203
204/* the structure where most of the perl state is stored, overlaid on the cxstack */
205typedef struct {
206 SV *defsv;
207 AV *defav;
208 SV *errsv;
209 SV *irsgv;
210#define VAR(name,type) type name;
211# include "state.h"
212#undef VAR
213} perl_slots;
214
215#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
158 216
159/* this is a structure representing a perl-level coroutine */ 217/* this is a structure representing a perl-level coroutine */
160struct coro { 218struct coro {
161 /* the c coroutine allocated to this perl coroutine, if any */ 219 /* the c coroutine allocated to this perl coroutine, if any */
162 coro_cctx *cctx; 220 coro_cctx *cctx;
163 221
222 /* process data */
223 AV *mainstack;
224 perl_slots *slot; /* basically the saved sp */
225
164 /* data associated with this coroutine (initial args) */ 226 /* data associated with this coroutine (initial args) */
165 AV *args; 227 AV *args;
166 int refcnt; 228 int refcnt;
167 int save; /* CORO_SAVE flags */
168 int flags; /* CF_ flags */ 229 int flags; /* CF_ flags */
169 230
170 /* optionally saved, might be zero */ 231 /* statistics */
171 AV *defav; /* @_ */ 232 int usecount; /* number of transfers to this coro */
172 SV *defsv; /* $_ */
173 SV *errsv; /* $@ */
174 SV *irssv; /* $/ */
175 SV *irssv_sv; /* real $/ cache */
176
177#define VAR(name,type) type name;
178# include "state.h"
179#undef VAR
180 233
181 /* coro process data */ 234 /* coro process data */
182 int prio; 235 int prio;
236 SV *throw;
237
238 /* async_pool */
239 SV *saved_deffh;
240
241 /* linked list */
242 struct coro *next, *prev;
243 HV *hv; /* the perl hash associated with this coro, if any */
183}; 244};
184 245
185typedef struct coro *Coro__State; 246typedef struct coro *Coro__State;
186typedef struct coro *Coro__State_or_hashref; 247typedef struct coro *Coro__State_or_hashref;
187 248
249/** Coro ********************************************************************/
250
251#define PRIO_MAX 3
252#define PRIO_HIGH 1
253#define PRIO_NORMAL 0
254#define PRIO_LOW -1
255#define PRIO_IDLE -3
256#define PRIO_MIN -4
257
258/* for Coro.pm */
259static SV *coro_current;
260static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
261static int coro_nready;
262static struct coro *coro_first;
263
264/** lowlevel stuff **********************************************************/
265
266static SV *
267coro_get_sv (const char *name, int create)
268{
269#if PERL_VERSION_ATLEAST (5,9,0)
270 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
271 get_sv (name, create);
272#endif
273 return get_sv (name, create);
274}
275
188static AV * 276static AV *
277coro_get_av (const char *name, int create)
278{
279#if PERL_VERSION_ATLEAST (5,9,0)
280 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
281 get_av (name, create);
282#endif
283 return get_av (name, create);
284}
285
286static HV *
287coro_get_hv (const char *name, int create)
288{
289#if PERL_VERSION_ATLEAST (5,9,0)
290 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
291 get_hv (name, create);
292#endif
293 return get_hv (name, create);
294}
295
296static AV *
189coro_clone_padlist (CV *cv) 297coro_clone_padlist (pTHX_ CV *cv)
190{ 298{
191 AV *padlist = CvPADLIST (cv); 299 AV *padlist = CvPADLIST (cv);
192 AV *newpadlist, *newpad; 300 AV *newpadlist, *newpad;
193 301
194 newpadlist = newAV (); 302 newpadlist = newAV ();
… …
206 314
207 return newpadlist; 315 return newpadlist;
208} 316}
209 317
210static void 318static void
211free_padlist (AV *padlist) 319free_padlist (pTHX_ AV *padlist)
212{ 320{
213 /* may be during global destruction */ 321 /* may be during global destruction */
214 if (SvREFCNT (padlist)) 322 if (SvREFCNT (padlist))
215 { 323 {
216 I32 i = AvFILLp (padlist); 324 I32 i = AvFILLp (padlist);
… …
237 AV *padlist; 345 AV *padlist;
238 AV *av = (AV *)mg->mg_obj; 346 AV *av = (AV *)mg->mg_obj;
239 347
240 /* casting is fun. */ 348 /* casting is fun. */
241 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 349 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
242 free_padlist (padlist); 350 free_padlist (aTHX_ padlist);
243 351
244 SvREFCNT_dec (av); 352 SvREFCNT_dec (av);
245 353
246 return 0; 354 return 0;
247} 355}
… …
255 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 363 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
256 ? SvMAGIC (cv) \ 364 ? SvMAGIC (cv) \
257 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 365 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
258 : 0 366 : 0
259 367
368static struct coro *
369SvSTATE_ (pTHX_ SV *coro)
370{
371 HV *stash;
372 MAGIC *mg;
373
374 if (SvROK (coro))
375 coro = SvRV (coro);
376
377 if (expect_false (SvTYPE (coro) != SVt_PVHV))
378 croak ("Coro::State object required");
379
380 stash = SvSTASH (coro);
381 if (expect_false (stash != coro_stash && stash != coro_state_stash))
382 {
383 /* very slow, but rare, check */
384 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
385 croak ("Coro::State object required");
386 }
387
388 mg = CORO_MAGIC (coro);
389 return (struct coro *)mg->mg_ptr;
390}
391
392#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
393
260/* the next two functions merely cache the padlists */ 394/* the next two functions merely cache the padlists */
261static void 395static void
262get_padlist (CV *cv) 396get_padlist (pTHX_ CV *cv)
263{ 397{
264 MAGIC *mg = CORO_MAGIC (cv); 398 MAGIC *mg = CORO_MAGIC (cv);
265 AV *av; 399 AV *av;
266 400
267 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 401 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
268 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 402 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
269 else 403 else
270 { 404 {
271#if PREFER_PERL_FUNCTIONS 405#if CORO_PREFER_PERL_FUNCTIONS
272 /* this is probably cleaner, but also slower? */ 406 /* this is probably cleaner, but also slower? */
273 CV *cp = Perl_cv_clone (cv); 407 CV *cp = Perl_cv_clone (cv);
274 CvPADLIST (cv) = CvPADLIST (cp); 408 CvPADLIST (cv) = CvPADLIST (cp);
275 CvPADLIST (cp) = 0; 409 CvPADLIST (cp) = 0;
276 SvREFCNT_dec (cp); 410 SvREFCNT_dec (cp);
277#else 411#else
278 CvPADLIST (cv) = coro_clone_padlist (cv); 412 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
279#endif 413#endif
280 } 414 }
281} 415}
282 416
283static void 417static void
284put_padlist (CV *cv) 418put_padlist (pTHX_ CV *cv)
285{ 419{
286 MAGIC *mg = CORO_MAGIC (cv); 420 MAGIC *mg = CORO_MAGIC (cv);
287 AV *av; 421 AV *av;
288 422
289 if (!mg) 423 if (expect_false (!mg))
290 { 424 {
291 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); 425 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
292 mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 426 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
293 mg->mg_virtual = &vtbl_coro; 427 mg->mg_virtual = &vtbl_coro;
294 mg->mg_obj = (SV *)newAV (); 428 mg->mg_obj = (SV *)newAV ();
295 } 429 }
296 430
297 av = (AV *)mg->mg_obj; 431 av = (AV *)mg->mg_obj;
298 432
299 if (AvFILLp (av) >= AvMAX (av)) 433 if (expect_false (AvFILLp (av) >= AvMAX (av)))
300 av_extend (av, AvMAX (av) + 1); 434 av_extend (av, AvMAX (av) + 1);
301 435
302 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 436 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
303} 437}
304 438
305#define SB do { 439/** load & save, init *******************************************************/
306#define SE } while (0)
307 440
308#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
309
310static void 441static void
311load_perl (Coro__State c) 442load_perl (pTHX_ Coro__State c)
312{ 443{
444 perl_slots *slot = c->slot;
445 c->slot = 0;
446
447 PL_mainstack = c->mainstack;
448
449 GvSV (PL_defgv) = slot->defsv;
450 GvAV (PL_defgv) = slot->defav;
451 GvSV (PL_errgv) = slot->errsv;
452 GvSV (irsgv) = slot->irsgv;
453
313#define VAR(name,type) PL_ ## name = c->name; 454 #define VAR(name,type) PL_ ## name = slot->name;
314# include "state.h" 455 # include "state.h"
315#undef VAR 456 #undef VAR
316
317 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
318 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
319 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
320 if (c->irssv)
321 {
322 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
323 SvREFCNT_dec (c->irssv);
324 else
325 {
326 REPLACE_SV (PL_rs, c->irssv);
327 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
328 sv_setsv (c->irssv_sv, PL_rs);
329 }
330 }
331 457
332 { 458 {
333 dSP; 459 dSP;
460
334 CV *cv; 461 CV *cv;
335 462
336 /* now do the ugly restore mess */ 463 /* now do the ugly restore mess */
337 while ((cv = (CV *)POPs)) 464 while (expect_true (cv = (CV *)POPs))
338 { 465 {
339 put_padlist (cv); /* mark this padlist as available */ 466 put_padlist (aTHX_ cv); /* mark this padlist as available */
340 CvDEPTH (cv) = PTR2IV (POPs); 467 CvDEPTH (cv) = PTR2IV (POPs);
341 CvPADLIST (cv) = (AV *)POPs; 468 CvPADLIST (cv) = (AV *)POPs;
342 } 469 }
343 470
344 PUTBACK; 471 PUTBACK;
345 } 472 }
346} 473}
347 474
348static void 475static void
349save_perl (Coro__State c) 476save_perl (pTHX_ Coro__State c)
350{ 477{
351 { 478 {
352 dSP; 479 dSP;
353 I32 cxix = cxstack_ix; 480 I32 cxix = cxstack_ix;
354 PERL_CONTEXT *ccstk = cxstack; 481 PERL_CONTEXT *ccstk = cxstack;
… …
357 /* 484 /*
358 * the worst thing you can imagine happens first - we have to save 485 * the worst thing you can imagine happens first - we have to save
359 * (and reinitialize) all cv's in the whole callchain :( 486 * (and reinitialize) all cv's in the whole callchain :(
360 */ 487 */
361 488
362 EXTEND (SP, 3 + 1);
363 PUSHs (Nullsv); 489 XPUSHs (Nullsv);
364 /* this loop was inspired by pp_caller */ 490 /* this loop was inspired by pp_caller */
365 for (;;) 491 for (;;)
366 { 492 {
367 while (cxix >= 0) 493 while (expect_true (cxix >= 0))
368 { 494 {
369 PERL_CONTEXT *cx = &ccstk[cxix--]; 495 PERL_CONTEXT *cx = &ccstk[cxix--];
370 496
371 if (CxTYPE (cx) == CXt_SUB) 497 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
372 { 498 {
373 CV *cv = cx->blk_sub.cv; 499 CV *cv = cx->blk_sub.cv;
374 500
375 if (CvDEPTH (cv)) 501 if (expect_true (CvDEPTH (cv)))
376 { 502 {
377 EXTEND (SP, 3); 503 EXTEND (SP, 3);
378 PUSHs ((SV *)CvPADLIST (cv)); 504 PUSHs ((SV *)CvPADLIST (cv));
379 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 505 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
380 PUSHs ((SV *)cv); 506 PUSHs ((SV *)cv);
381 507
382 CvDEPTH (cv) = 0; 508 CvDEPTH (cv) = 0;
383 get_padlist (cv); 509 get_padlist (aTHX_ cv);
384 } 510 }
385 } 511 }
386 } 512 }
387 513
388 if (top_si->si_type == PERLSI_MAIN) 514 if (expect_true (top_si->si_type == PERLSI_MAIN))
389 break; 515 break;
390 516
391 top_si = top_si->si_prev; 517 top_si = top_si->si_prev;
392 ccstk = top_si->si_cxstack; 518 ccstk = top_si->si_cxstack;
393 cxix = top_si->si_cxix; 519 cxix = top_si->si_cxix;
394 } 520 }
395 521
396 PUTBACK; 522 PUTBACK;
397 } 523 }
398 524
399 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 525 /* allocate some space on the context stack for our purposes */
400 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 526 {
401 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 527 /* we manually unroll here, as usually 2 slots is enough */
402 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 528 int i;
529 if (SLOT_COUNT >= 1) CXINC;
530 if (SLOT_COUNT >= 2) CXINC;
531 if (SLOT_COUNT >= 3) CXINC;
532 for (i = 3; i < SLOT_COUNT; ++i)
533 CXINC;
403 534
535 cxstack_ix -= SLOT_COUNT; /* undo allocation */
536 }
537
538 c->mainstack = PL_mainstack;
539
540 {
541 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
542
543 slot->defav = GvAV (PL_defgv);
544 slot->defsv = DEFSV;
545 slot->errsv = ERRSV;
546 slot->irsgv = GvSV (irsgv);
547
404#define VAR(name,type)c->name = PL_ ## name; 548 #define VAR(name,type) slot->name = PL_ ## name;
405# include "state.h" 549 # include "state.h"
406#undef VAR 550 #undef VAR
551 }
407} 552}
408 553
409/* 554/*
410 * allocate various perl stacks. This is an exact copy 555 * allocate various perl stacks. This is an exact copy
411 * of perl.c:init_stacks, except that it uses less memory 556 * of perl.c:init_stacks, except that it uses less memory
412 * on the (sometimes correct) assumption that coroutines do 557 * on the (sometimes correct) assumption that coroutines do
413 * not usually need a lot of stackspace. 558 * not usually need a lot of stackspace.
414 */ 559 */
415#if PREFER_PERL_FUNCTIONS 560#if CORO_PREFER_PERL_FUNCTIONS
416# define coro_init_stacks init_stacks 561# define coro_init_stacks init_stacks
417#else 562#else
418static void 563static void
419coro_init_stacks () 564coro_init_stacks (pTHX)
420{ 565{
421 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 566 PL_curstackinfo = new_stackinfo(32, 8);
422 PL_curstackinfo->si_type = PERLSI_MAIN; 567 PL_curstackinfo->si_type = PERLSI_MAIN;
423 PL_curstack = PL_curstackinfo->si_stack; 568 PL_curstack = PL_curstackinfo->si_stack;
424 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 569 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
425 570
426 PL_stack_base = AvARRAY(PL_curstack); 571 PL_stack_base = AvARRAY(PL_curstack);
427 PL_stack_sp = PL_stack_base; 572 PL_stack_sp = PL_stack_base;
428 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 573 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
429 574
430 New(50,PL_tmps_stack,128,SV*); 575 New(50,PL_tmps_stack,32,SV*);
431 PL_tmps_floor = -1; 576 PL_tmps_floor = -1;
432 PL_tmps_ix = -1; 577 PL_tmps_ix = -1;
433 PL_tmps_max = 128; 578 PL_tmps_max = 32;
434 579
435 New(54,PL_markstack,32,I32); 580 New(54,PL_markstack,16,I32);
436 PL_markstack_ptr = PL_markstack; 581 PL_markstack_ptr = PL_markstack;
437 PL_markstack_max = PL_markstack + 32; 582 PL_markstack_max = PL_markstack + 16;
438 583
439#ifdef SET_MARK_OFFSET 584#ifdef SET_MARK_OFFSET
440 SET_MARK_OFFSET; 585 SET_MARK_OFFSET;
441#endif 586#endif
442 587
443 New(54,PL_scopestack,32,I32); 588 New(54,PL_scopestack,8,I32);
444 PL_scopestack_ix = 0; 589 PL_scopestack_ix = 0;
445 PL_scopestack_max = 32; 590 PL_scopestack_max = 8;
446 591
447 New(54,PL_savestack,64,ANY); 592 New(54,PL_savestack,24,ANY);
448 PL_savestack_ix = 0; 593 PL_savestack_ix = 0;
449 PL_savestack_max = 64; 594 PL_savestack_max = 24;
450 595
451#if !PERL_VERSION_ATLEAST (5,9,0) 596#if !PERL_VERSION_ATLEAST (5,9,0)
452 New(54,PL_retstack,16,OP*); 597 New(54,PL_retstack,4,OP*);
453 PL_retstack_ix = 0; 598 PL_retstack_ix = 0;
454 PL_retstack_max = 16; 599 PL_retstack_max = 4;
455#endif 600#endif
456} 601}
457#endif 602#endif
458 603
459/* 604/*
460 * destroy the stacks, the callchain etc... 605 * destroy the stacks, the callchain etc...
461 */ 606 */
462static void 607static void
463coro_destroy_stacks () 608coro_destroy_stacks (pTHX)
464{ 609{
465 if (!IN_DESTRUCT)
466 {
467 /* restore all saved variables and stuff */
468 LEAVE_SCOPE (0);
469 assert (PL_tmps_floor == -1);
470
471 /* free all temporaries */
472 FREETMPS;
473 assert (PL_tmps_ix == -1);
474
475 POPSTACK_TO (PL_mainstack);
476 }
477
478 while (PL_curstackinfo->si_next) 610 while (PL_curstackinfo->si_next)
479 PL_curstackinfo = PL_curstackinfo->si_next; 611 PL_curstackinfo = PL_curstackinfo->si_next;
480 612
481 while (PL_curstackinfo) 613 while (PL_curstackinfo)
482 { 614 {
… …
497#if !PERL_VERSION_ATLEAST (5,9,0) 629#if !PERL_VERSION_ATLEAST (5,9,0)
498 Safefree (PL_retstack); 630 Safefree (PL_retstack);
499#endif 631#endif
500} 632}
501 633
502static void 634static size_t
503setup_coro (struct coro *coro) 635coro_rss (pTHX_ struct coro *coro)
636{
637 size_t rss = sizeof (*coro);
638
639 if (coro->mainstack)
640 {
641 perl_slots tmp_slot;
642 perl_slots *slot;
643
644 if (coro->flags & CF_RUNNING)
645 {
646 slot = &tmp_slot;
647
648 #define VAR(name,type) slot->name = PL_ ## name;
649 # include "state.h"
650 #undef VAR
651 }
652 else
653 slot = coro->slot;
654
655 rss += sizeof (slot->curstackinfo);
656 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
657 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
658 rss += slot->tmps_max * sizeof (SV *);
659 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
660 rss += slot->scopestack_max * sizeof (I32);
661 rss += slot->savestack_max * sizeof (ANY);
662
663#if !PERL_VERSION_ATLEAST (5,9,0)
664 rss += slot->retstack_max * sizeof (OP *);
665#endif
666 }
667
668 return rss;
669}
670
671/** coroutine stack handling ************************************************/
672
673static void
674coro_setup (pTHX_ struct coro *coro)
504{ 675{
505 /* 676 /*
506 * emulate part of the perl startup here. 677 * emulate part of the perl startup here.
507 */ 678 */
508
509 coro_init_stacks (); 679 coro_init_stacks (aTHX);
510 680
681 PL_runops = RUNOPS_DEFAULT;
511 PL_curcop = &PL_compiling; 682 PL_curcop = &PL_compiling;
512 PL_in_eval = EVAL_NULL; 683 PL_in_eval = EVAL_NULL;
684 PL_comppad = 0;
513 PL_curpm = 0; 685 PL_curpm = 0;
686 PL_curpad = 0;
514 PL_localizing = 0; 687 PL_localizing = 0;
515 PL_dirty = 0; 688 PL_dirty = 0;
516 PL_restartop = 0; 689 PL_restartop = 0;
690 SvREFCNT_inc (PL_diehook ); hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
691 SvREFCNT_inc (PL_warnhook); hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
692
693 GvSV (PL_defgv) = newSV (0);
694 GvAV (PL_defgv) = coro->args; coro->args = 0;
695 GvSV (PL_errgv) = newSV (0);
696 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
697 PL_rs = newSVsv (GvSV (irsgv));
698 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
517 699
518 { 700 {
519 dSP; 701 dSP;
520 LOGOP myop; 702 LOGOP myop;
521 703
522 SvREFCNT_dec (GvAV (PL_defgv));
523 GvAV (PL_defgv) = coro->args; coro->args = 0;
524
525 Zero (&myop, 1, LOGOP); 704 Zero (&myop, 1, LOGOP);
526 myop.op_next = Nullop; 705 myop.op_next = Nullop;
527 myop.op_flags = OPf_WANT_VOID; 706 myop.op_flags = OPf_WANT_VOID;
528 707
529 PUSHMARK (SP); 708 PUSHMARK (SP);
530 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 709 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
531 PUTBACK; 710 PUTBACK;
532 PL_op = (OP *)&myop; 711 PL_op = (OP *)&myop;
533 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 712 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
534 SPAGAIN; 713 SPAGAIN;
535 } 714 }
536 715
537 ENTER; /* necessary e.g. for dounwind */ 716 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
538} 717}
539 718
540static void 719static void
720coro_destroy (pTHX_ struct coro *coro)
721{
722 if (!IN_DESTRUCT)
723 {
724 /* restore all saved variables and stuff */
725 LEAVE_SCOPE (0);
726 assert (PL_tmps_floor == -1);
727
728 /* free all temporaries */
729 FREETMPS;
730 assert (PL_tmps_ix == -1);
731
732 /* unwind all extra stacks */
733 POPSTACK_TO (PL_mainstack);
734
735 /* unwind main stack */
736 dounwind (-1);
737 }
738
739 SvREFCNT_dec (GvSV (PL_defgv));
740 SvREFCNT_dec (GvAV (PL_defgv));
741 SvREFCNT_dec (GvSV (PL_errgv));
742 SvREFCNT_dec (PL_defoutgv);
743 SvREFCNT_dec (PL_rs);
744 SvREFCNT_dec (GvSV (irsgv));
745
746 SvREFCNT_dec (PL_diehook);
747 SvREFCNT_dec (PL_warnhook);
748
749 SvREFCNT_dec (coro->saved_deffh);
750 SvREFCNT_dec (coro->throw);
751
752 coro_destroy_stacks (aTHX);
753}
754
755static void
541free_coro_mortal () 756free_coro_mortal (pTHX)
542{ 757{
543 if (coro_mortal) 758 if (expect_true (coro_mortal))
544 { 759 {
545 SvREFCNT_dec (coro_mortal); 760 SvREFCNT_dec (coro_mortal);
546 coro_mortal = 0; 761 coro_mortal = 0;
547 } 762 }
548} 763}
549 764
765static int
766runops_trace (pTHX)
767{
768 COP *oldcop = 0;
769 int oldcxix = -2;
770 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
771 coro_cctx *cctx = coro->cctx;
772
773 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
774 {
775 PERL_ASYNC_CHECK ();
776
777 if (cctx->flags & CC_TRACE_ALL)
778 {
779 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
780 {
781 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
782 SV **bot, **top;
783 AV *av = newAV (); /* return values */
784 SV **cb;
785 dSP;
786
787 GV *gv = CvGV (cx->blk_sub.cv);
788 SV *fullname = sv_2mortal (newSV (0));
789 if (isGV (gv))
790 gv_efullname3 (fullname, gv, 0);
791
792 bot = PL_stack_base + cx->blk_oldsp + 1;
793 top = cx->blk_gimme == G_ARRAY ? SP + 1
794 : cx->blk_gimme == G_SCALAR ? bot + 1
795 : bot;
796
797 av_extend (av, top - bot);
798 while (bot < top)
799 av_push (av, SvREFCNT_inc (*bot++));
800
801 PL_runops = RUNOPS_DEFAULT;
802 ENTER;
803 SAVETMPS;
804 EXTEND (SP, 3);
805 PUSHMARK (SP);
806 PUSHs (&PL_sv_no);
807 PUSHs (fullname);
808 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
809 PUTBACK;
810 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
811 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
812 SPAGAIN;
813 FREETMPS;
814 LEAVE;
815 PL_runops = runops_trace;
816 }
817
818 if (oldcop != PL_curcop)
819 {
820 oldcop = PL_curcop;
821
822 if (PL_curcop != &PL_compiling)
823 {
824 SV **cb;
825
826 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
827 {
828 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
829
830 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
831 {
832 runops_proc_t old_runops = PL_runops;
833 dSP;
834 GV *gv = CvGV (cx->blk_sub.cv);
835 SV *fullname = sv_2mortal (newSV (0));
836
837 if (isGV (gv))
838 gv_efullname3 (fullname, gv, 0);
839
840 PL_runops = RUNOPS_DEFAULT;
841 ENTER;
842 SAVETMPS;
843 EXTEND (SP, 3);
844 PUSHMARK (SP);
845 PUSHs (&PL_sv_yes);
846 PUSHs (fullname);
847 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
848 PUTBACK;
849 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
850 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
851 SPAGAIN;
852 FREETMPS;
853 LEAVE;
854 PL_runops = runops_trace;
855 }
856
857 oldcxix = cxstack_ix;
858 }
859
860 if (cctx->flags & CC_TRACE_LINE)
861 {
862 dSP;
863
864 PL_runops = RUNOPS_DEFAULT;
865 ENTER;
866 SAVETMPS;
867 EXTEND (SP, 3);
868 PL_runops = RUNOPS_DEFAULT;
869 PUSHMARK (SP);
870 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
871 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
872 PUTBACK;
873 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
874 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
875 SPAGAIN;
876 FREETMPS;
877 LEAVE;
878 PL_runops = runops_trace;
879 }
880 }
881 }
882 }
883 }
884
885 TAINT_NOT;
886 return 0;
887}
888
550/* inject a fake call to Coro::State::_cctx_init into the execution */ 889/* inject a fake call to Coro::State::_cctx_init into the execution */
890/* _cctx_init should be careful, as it could be called at almost any time */
891/* during execution of a perl program */
551static void NOINLINE 892static void NOINLINE
552prepare_cctx (coro_cctx *cctx) 893cctx_prepare (pTHX_ coro_cctx *cctx)
553{ 894{
554 dSP; 895 dSP;
555 LOGOP myop; 896 LOGOP myop;
897
898 PL_top_env = &PL_start_env;
899
900 if (cctx->flags & CC_TRACE)
901 PL_runops = runops_trace;
556 902
557 Zero (&myop, 1, LOGOP); 903 Zero (&myop, 1, LOGOP);
558 myop.op_next = PL_op; 904 myop.op_next = PL_op;
559 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 905 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
560 906
… …
566 PL_op = (OP *)&myop; 912 PL_op = (OP *)&myop;
567 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 913 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
568 SPAGAIN; 914 SPAGAIN;
569} 915}
570 916
917/*
918 * this is a _very_ stripped down perl interpreter ;)
919 */
571static void 920static void
572coro_run (void *arg) 921cctx_run (void *arg)
573{ 922{
923 dTHX;
924
574 /* coro_run is the alternative tail of transfer(), so unlock here. */ 925 /* cctx_run is the alternative tail of transfer(), so unlock here. */
575 UNLOCK; 926 UNLOCK;
576 927
577 /* 928 /* we now skip the entersub that lead to transfer() */
578 * this is a _very_ stripped down perl interpreter ;) 929 PL_op = PL_op->op_next;
579 */
580 PL_top_env = &PL_start_env;
581 930
582 /* inject call to cctx_init */ 931 /* inject a fake subroutine call to cctx_init */
583 prepare_cctx ((coro_cctx *)arg); 932 cctx_prepare (aTHX_ (coro_cctx *)arg);
584 933
585 /* somebody will hit me for both perl_run and PL_restartop */ 934 /* somebody or something will hit me for both perl_run and PL_restartop */
586 PL_restartop = PL_op; 935 PL_restartop = PL_op;
587 perl_run (PL_curinterp); 936 perl_run (PL_curinterp);
588 937
589 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 938 /*
590 abort (); 939 * If perl-run returns we assume exit() was being called or the coro
940 * fell off the end, which seems to be the only valid (non-bug)
941 * reason for perl_run to return. We try to exit by jumping to the
942 * bootstrap-time "top" top_env, as we cannot restore the "main"
943 * coroutine as Coro has no such concept
944 */
945 PL_top_env = main_top_env;
946 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
591} 947}
592 948
593static coro_cctx * 949static coro_cctx *
594cctx_new () 950cctx_new ()
595{ 951{
596 coro_cctx *cctx; 952 coro_cctx *cctx;
953 void *stack_start;
954 size_t stack_size;
597 955
598 ++cctx_count; 956 ++cctx_count;
599 957
600 Newz (0, cctx, 1, coro_cctx); 958 Newz (0, cctx, 1, coro_cctx);
601 959
602#if HAVE_MMAP 960#if HAVE_MMAP
603
604 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 961 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
605 /* mmap supposedly does allocate-on-write for us */ 962 /* mmap supposedly does allocate-on-write for us */
606 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 963 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
607 964
608 if (cctx->sptr == (void *)-1) 965 if (cctx->sptr != (void *)-1)
609 {
610 perror ("FATAL: unable to mmap stack for coroutine");
611 _exit (EXIT_FAILURE);
612 } 966 {
613
614# if STACKGUARD 967# if CORO_STACKGUARD
615 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 968 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
616# endif 969# endif
970 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
971 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
972 cctx->flags |= CC_MAPPED;
973 }
974 else
975#endif
976 {
977 cctx->ssize = coro_stacksize * (long)sizeof (long);
978 New (0, cctx->sptr, coro_stacksize, long);
617 979
618#else
619
620 cctx->ssize = STACKSIZE * (long)sizeof (long);
621 New (0, cctx->sptr, STACKSIZE, long);
622
623 if (!cctx->sptr) 980 if (!cctx->sptr)
624 { 981 {
625 perror ("FATAL: unable to malloc stack for coroutine"); 982 perror ("FATAL: unable to allocate stack for coroutine");
626 _exit (EXIT_FAILURE); 983 _exit (EXIT_FAILURE);
627 } 984 }
628 985
629#endif 986 stack_start = cctx->sptr;
987 stack_size = cctx->ssize;
988 }
630 989
631#if USE_VALGRIND 990 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
632 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 991 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
633 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
634 cctx->ssize + (char *)cctx->sptr
635 );
636#endif
637
638 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
639 992
640 return cctx; 993 return cctx;
641} 994}
642 995
643static void 996static void
… …
646 if (!cctx) 999 if (!cctx)
647 return; 1000 return;
648 1001
649 --cctx_count; 1002 --cctx_count;
650 1003
651#if USE_VALGRIND 1004#if CORO_USE_VALGRIND
652 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1005 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
653#endif 1006#endif
654 1007
655#if HAVE_MMAP 1008#if HAVE_MMAP
1009 if (cctx->flags & CC_MAPPED)
656 munmap (cctx->sptr, cctx->ssize); 1010 munmap (cctx->sptr, cctx->ssize);
657#else 1011 else
1012#endif
658 Safefree (cctx->sptr); 1013 Safefree (cctx->sptr);
659#endif
660 1014
661 Safefree (cctx); 1015 Safefree (cctx);
662} 1016}
663 1017
1018/* wether this cctx should be destructed */
1019#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1020
664static coro_cctx * 1021static coro_cctx *
665cctx_get () 1022cctx_get (pTHX)
666{ 1023{
667 coro_cctx *cctx; 1024 while (expect_true (cctx_first))
668
669 if (cctx_first)
670 { 1025 {
671 cctx = cctx_first; 1026 coro_cctx *cctx = cctx_first;
672 cctx_first = cctx->next; 1027 cctx_first = cctx->next;
673 --cctx_idle; 1028 --cctx_idle;
674 } 1029
675 else 1030 if (expect_true (!CCTX_EXPIRED (cctx)))
676 { 1031 return cctx;
677 cctx = cctx_new (); 1032
678 PL_op = PL_op->op_next; 1033 cctx_destroy (cctx);
679 } 1034 }
680 1035
681 return cctx; 1036 return cctx_new ();
682} 1037}
683 1038
684static void 1039static void
685cctx_put (coro_cctx *cctx) 1040cctx_put (coro_cctx *cctx)
686{ 1041{
687 /* free another cctx if overlimit */ 1042 /* free another cctx if overlimit */
688 if (cctx_idle >= MAX_IDLE_CCTX) 1043 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
689 { 1044 {
690 coro_cctx *first = cctx_first; 1045 coro_cctx *first = cctx_first;
691 cctx_first = first->next; 1046 cctx_first = first->next;
692 --cctx_idle; 1047 --cctx_idle;
693 1048
694 assert (!first->inuse);
695 cctx_destroy (first); 1049 cctx_destroy (first);
696 } 1050 }
697 1051
698 ++cctx_idle; 1052 ++cctx_idle;
699 cctx->next = cctx_first; 1053 cctx->next = cctx_first;
700 cctx_first = cctx; 1054 cctx_first = cctx;
701} 1055}
702 1056
703/* never call directly, always through the coro_state_transfer global variable */ 1057/** coroutine switching *****************************************************/
1058
1059static void
1060transfer_check (pTHX_ struct coro *prev, struct coro *next)
1061{
1062 if (expect_true (prev != next))
1063 {
1064 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1065 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1066
1067 if (expect_false (next->flags & CF_RUNNING))
1068 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1069
1070 if (expect_false (next->flags & CF_DESTROYED))
1071 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1072
1073 if (
1074#if PERL_VERSION_ATLEAST (5,9,0)
1075 expect_false (PL_parser)
1076#else
1077 expect_false (PL_lex_state != LEX_NOTPARSING)
1078#endif
1079 )
1080 croak ("Coro::State::transfer called while parsing, but this is not supported");
1081 }
1082}
1083
1084/* always use the TRANSFER macro */
704static void NOINLINE 1085static void NOINLINE
705transfer (struct coro *prev, struct coro *next) 1086transfer (pTHX_ struct coro *prev, struct coro *next)
706{ 1087{
707 dSTACKLEVEL; 1088 dSTACKLEVEL;
708 1089
709 /* sometimes transfer is only called to set idle_sp */ 1090 /* sometimes transfer is only called to set idle_sp */
710 if (!next) 1091 if (expect_false (!next))
711 { 1092 {
712 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1093 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
713 assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */ 1094 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
714 } 1095 }
715 else if (prev != next) 1096 else if (expect_true (prev != next))
716 { 1097 {
717 coro_cctx *prev__cctx; 1098 coro_cctx *prev__cctx;
718 1099
719 if (prev->flags & CF_NEW) 1100 if (expect_false (prev->flags & CF_NEW))
720 { 1101 {
721 /* create a new empty context */ 1102 /* create a new empty context */
722 Newz (0, prev->cctx, 1, coro_cctx); 1103 Newz (0, prev->cctx, 1, coro_cctx);
723 prev->cctx->inuse = 1;
724 prev->flags &= ~CF_NEW; 1104 prev->flags &= ~CF_NEW;
725 prev->flags |= CF_RUNNING; 1105 prev->flags |= CF_RUNNING;
726 } 1106 }
727 1107
728 /*TODO: must not croak here */
729 if (!prev->flags & CF_RUNNING)
730 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
731
732 if (next->flags & CF_RUNNING)
733 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
734
735 prev->flags &= ~CF_RUNNING; 1108 prev->flags &= ~CF_RUNNING;
736 next->flags |= CF_RUNNING; 1109 next->flags |= CF_RUNNING;
737 1110
738 LOCK; 1111 LOCK;
739 1112
740 if (next->flags & CF_NEW) 1113 if (expect_false (next->flags & CF_NEW))
741 { 1114 {
742 /* need to start coroutine */ 1115 /* need to start coroutine */
743 next->flags &= ~CF_NEW; 1116 next->flags &= ~CF_NEW;
744 /* first get rid of the old state */ 1117 /* first get rid of the old state */
745 save_perl (prev); 1118 save_perl (aTHX_ prev);
746 /* setup coroutine call */ 1119 /* setup coroutine call */
747 setup_coro (next); 1120 coro_setup (aTHX_ next);
748 /* need a new stack */
749 assert (!next->cctx);
750 } 1121 }
751 else 1122 else
752 { 1123 {
753 /* coroutine already started */ 1124 /* coroutine already started */
754 save_perl (prev); 1125 save_perl (aTHX_ prev);
755 load_perl (next); 1126 load_perl (aTHX_ next);
756 } 1127 }
757 1128
758 prev__cctx = prev->cctx; 1129 prev__cctx = prev->cctx;
759 1130
760 /* possibly "free" the cctx */ 1131 /* possibly "free" the cctx */
761 if (prev__cctx->idle_sp == STACKLEVEL) 1132 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
762 { 1133 {
763 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1134 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
764 assert (PL_top_env == prev__cctx->top_env); 1135 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
765 1136
766 prev->cctx = 0; 1137 prev->cctx = 0;
767 1138
1139 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1140 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1141 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1142 if (!next->cctx)
1143 next->cctx = cctx_get (aTHX);
1144
768 cctx_put (prev__cctx); 1145 cctx_put (prev__cctx);
769 prev__cctx->inuse = 0;
770 } 1146 }
771 1147
1148 ++next->usecount;
1149
772 if (!next->cctx) 1150 if (expect_true (!next->cctx))
773 {
774 next->cctx = cctx_get (); 1151 next->cctx = cctx_get (aTHX);
775 assert (!next->cctx->inuse);
776 next->cctx->inuse = 1;
777 }
778 1152
779 if (prev__cctx != next->cctx) 1153 if (expect_false (prev__cctx != next->cctx))
780 { 1154 {
781 prev__cctx->top_env = PL_top_env; 1155 prev__cctx->top_env = PL_top_env;
782 PL_top_env = next->cctx->top_env; 1156 PL_top_env = next->cctx->top_env;
783 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1157 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
784 } 1158 }
785 1159
786 free_coro_mortal (); 1160 free_coro_mortal (aTHX);
787
788 UNLOCK; 1161 UNLOCK;
1162
1163 if (expect_false (prev->throw || next->throw))
1164 {
1165 struct coro *coro = SvSTATE (coro_current);
1166
1167 if (coro->throw)
1168 {
1169 SV *exception = coro->throw;
1170 coro->throw = 0;
1171 sv_setsv (ERRSV, exception);
1172 croak (0);
1173 }
1174 }
789 } 1175 }
790} 1176}
791 1177
792struct transfer_args 1178struct transfer_args
793{ 1179{
794 struct coro *prev, *next; 1180 struct coro *prev, *next;
795}; 1181};
796 1182
797#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1183#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
1184#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
798 1185
1186/** high level stuff ********************************************************/
1187
799static void 1188static int
800coro_state_destroy (struct coro *coro) 1189coro_state_destroy (pTHX_ struct coro *coro)
801{ 1190{
802 if (coro->refcnt--) 1191 if (coro->flags & CF_DESTROYED)
803 return; 1192 return 0;
1193
1194 coro->flags |= CF_DESTROYED;
1195
1196 if (coro->flags & CF_READY)
1197 {
1198 /* reduce nready, as destroying a ready coro effectively unreadies it */
1199 /* alternative: look through all ready queues and remove the coro */
1200 LOCK;
1201 --coro_nready;
1202 UNLOCK;
1203 }
1204 else
1205 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
804 1206
805 if (coro->mainstack && coro->mainstack != main_mainstack) 1207 if (coro->mainstack && coro->mainstack != main_mainstack)
806 { 1208 {
807 struct coro temp; 1209 struct coro temp;
808 Zero (&temp, 1, struct coro);
809 temp.save = CORO_SAVE_ALL;
810 1210
811 if (coro->flags & CF_RUNNING) 1211 if (coro->flags & CF_RUNNING)
812 croak ("FATAL: tried to destroy currently running coroutine"); 1212 croak ("FATAL: tried to destroy currently running coroutine");
813 1213
814 save_perl (&temp); 1214 save_perl (aTHX_ &temp);
815 load_perl (coro); 1215 load_perl (aTHX_ coro);
816 1216
817 coro_destroy_stacks (); 1217 coro_destroy (aTHX_ coro);
818 1218
819 load_perl (&temp); /* this will get rid of defsv etc.. */ 1219 load_perl (aTHX_ &temp);
820 1220
821 coro->mainstack = 0; 1221 coro->slot = 0;
822 } 1222 }
823 1223
824 cctx_destroy (coro->cctx); 1224 cctx_destroy (coro->cctx);
825 SvREFCNT_dec (coro->args); 1225 SvREFCNT_dec (coro->args);
826 Safefree (coro); 1226
1227 if (coro->next) coro->next->prev = coro->prev;
1228 if (coro->prev) coro->prev->next = coro->next;
1229 if (coro == coro_first) coro_first = coro->next;
1230
1231 return 1;
827} 1232}
828 1233
829static int 1234static int
830coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1235coro_state_free (pTHX_ SV *sv, MAGIC *mg)
831{ 1236{
832 struct coro *coro = (struct coro *)mg->mg_ptr; 1237 struct coro *coro = (struct coro *)mg->mg_ptr;
833 mg->mg_ptr = 0; 1238 mg->mg_ptr = 0;
834 1239
1240 coro->hv = 0;
1241
1242 if (--coro->refcnt < 0)
1243 {
835 coro_state_destroy (coro); 1244 coro_state_destroy (aTHX_ coro);
1245 Safefree (coro);
1246 }
836 1247
837 return 0; 1248 return 0;
838} 1249}
839 1250
840static int 1251static int
… …
847 return 0; 1258 return 0;
848} 1259}
849 1260
850static MGVTBL coro_state_vtbl = { 1261static MGVTBL coro_state_vtbl = {
851 0, 0, 0, 0, 1262 0, 0, 0, 0,
852 coro_state_clear, 1263 coro_state_free,
853 0, 1264 0,
854#ifdef MGf_DUP 1265#ifdef MGf_DUP
855 coro_state_dup, 1266 coro_state_dup,
856#else 1267#else
857# define MGf_DUP 0 1268# define MGf_DUP 0
858#endif 1269#endif
859}; 1270};
860 1271
861static struct coro *
862SvSTATE (SV *coro)
863{
864 HV *stash;
865 MAGIC *mg;
866
867 if (SvROK (coro))
868 coro = SvRV (coro);
869
870 stash = SvSTASH (coro);
871 if (stash != coro_stash && stash != coro_state_stash)
872 {
873 /* very slow, but rare, check */
874 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
875 croak ("Coro::State object required");
876 }
877
878 mg = SvMAGIC (coro);
879 assert (mg->mg_type == PERL_MAGIC_ext);
880 return (struct coro *)mg->mg_ptr;
881}
882
883static void 1272static void
884prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1273prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
885{ 1274{
886 ta->prev = SvSTATE (prev_sv); 1275 ta->prev = SvSTATE (prev_sv);
887 ta->next = SvSTATE (next_sv); 1276 ta->next = SvSTATE (next_sv);
1277 TRANSFER_CHECK (*ta);
888} 1278}
889 1279
890static void 1280static void
891api_transfer (SV *prev_sv, SV *next_sv) 1281api_transfer (SV *prev_sv, SV *next_sv)
892{ 1282{
1283 dTHX;
893 struct transfer_args ta; 1284 struct transfer_args ta;
894 1285
895 prepare_transfer (&ta, prev_sv, next_sv); 1286 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
896 TRANSFER (ta); 1287 TRANSFER (ta);
897} 1288}
898 1289
899static int
900api_save (SV *coro_sv, int new_save)
901{
902 struct coro *coro = SvSTATE (coro_sv);
903 int old_save = coro->save;
904
905 if (new_save >= 0)
906 coro->save = new_save;
907
908 return old_save;
909}
910
911/** Coro ********************************************************************/ 1290/** Coro ********************************************************************/
912 1291
913#define PRIO_MAX 3
914#define PRIO_HIGH 1
915#define PRIO_NORMAL 0
916#define PRIO_LOW -1
917#define PRIO_IDLE -3
918#define PRIO_MIN -4
919
920/* for Coro.pm */
921static SV *coro_current;
922static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
923static int coro_nready;
924
925static void 1292static void
926coro_enq (SV *coro_sv) 1293coro_enq (pTHX_ SV *coro_sv)
927{ 1294{
928 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1295 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
929 coro_nready++;
930} 1296}
931 1297
932static SV * 1298static SV *
933coro_deq (int min_prio) 1299coro_deq (pTHX_ int min_prio)
934{ 1300{
935 int prio = PRIO_MAX - PRIO_MIN; 1301 int prio = PRIO_MAX - PRIO_MIN;
936 1302
937 min_prio -= PRIO_MIN; 1303 min_prio -= PRIO_MIN;
938 if (min_prio < 0) 1304 if (min_prio < 0)
939 min_prio = 0; 1305 min_prio = 0;
940 1306
941 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1307 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
942 if (AvFILLp (coro_ready [prio]) >= 0) 1308 if (AvFILLp (coro_ready [prio]) >= 0)
943 {
944 coro_nready--;
945 return av_shift (coro_ready [prio]); 1309 return av_shift (coro_ready [prio]);
946 }
947 1310
948 return 0; 1311 return 0;
949} 1312}
950 1313
951static int 1314static int
952api_ready (SV *coro_sv) 1315api_ready (SV *coro_sv)
953{ 1316{
1317 dTHX;
954 struct coro *coro; 1318 struct coro *coro;
955 1319
956 if (SvROK (coro_sv)) 1320 if (SvROK (coro_sv))
957 coro_sv = SvRV (coro_sv); 1321 coro_sv = SvRV (coro_sv);
958 1322
… …
962 return 0; 1326 return 0;
963 1327
964 coro->flags |= CF_READY; 1328 coro->flags |= CF_READY;
965 1329
966 LOCK; 1330 LOCK;
967 coro_enq (SvREFCNT_inc (coro_sv)); 1331 coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1332 ++coro_nready;
968 UNLOCK; 1333 UNLOCK;
969 1334
970 return 1; 1335 return 1;
971} 1336}
972 1337
973static int 1338static int
974api_is_ready (SV *coro_sv) 1339api_is_ready (SV *coro_sv)
975{ 1340{
1341 dTHX;
976 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1342 return !!(SvSTATE (coro_sv)->flags & CF_READY);
977} 1343}
978 1344
979static void 1345static void
980prepare_schedule (struct transfer_args *ta) 1346prepare_schedule (pTHX_ struct transfer_args *ta)
981{ 1347{
982 SV *prev, *next; 1348 SV *prev_sv, *next_sv;
983 1349
984 for (;;) 1350 for (;;)
985 { 1351 {
986 LOCK; 1352 LOCK;
987 next = coro_deq (PRIO_MIN); 1353 next_sv = coro_deq (aTHX_ PRIO_MIN);
1354
1355 /* nothing to schedule: call the idle handler */
1356 if (expect_false (!next_sv))
1357 {
1358 dSP;
1359 UNLOCK;
1360
1361 ENTER;
1362 SAVETMPS;
1363
1364 PUSHMARK (SP);
1365 PUTBACK;
1366 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1367
1368 FREETMPS;
1369 LEAVE;
1370 continue;
1371 }
1372
1373 ta->next = SvSTATE (next_sv);
1374
1375 /* cannot transfer to destroyed coros, skip and look for next */
1376 if (expect_false (ta->next->flags & CF_DESTROYED))
1377 {
1378 UNLOCK;
1379 SvREFCNT_dec (next_sv);
1380 /* coro_nready is already taken care of by destroy */
1381 continue;
1382 }
1383
1384 --coro_nready;
988 UNLOCK; 1385 UNLOCK;
989
990 if (next)
991 break; 1386 break;
992
993 {
994 dSP;
995
996 ENTER;
997 SAVETMPS;
998
999 PUSHMARK (SP);
1000 PUTBACK;
1001 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1002
1003 FREETMPS;
1004 LEAVE;
1005 } 1387 }
1006 }
1007
1008 prev = SvRV (coro_current);
1009 SvRV_set (coro_current, next);
1010 1388
1011 /* free this only after the transfer */ 1389 /* free this only after the transfer */
1012 LOCK; 1390 prev_sv = SvRV (coro_current);
1013 free_coro_mortal ();
1014 UNLOCK;
1015 coro_mortal = prev;
1016
1017 assert (!SvROK(prev));//D
1018 assert (!SvROK(next));//D
1019
1020 ta->prev = SvSTATE (prev); 1391 ta->prev = SvSTATE (prev_sv);
1021 ta->next = SvSTATE (next); 1392 TRANSFER_CHECK (*ta);
1022
1023 assert (ta->next->flags & CF_READY); 1393 assert (ta->next->flags & CF_READY);
1024 ta->next->flags &= ~CF_READY; 1394 ta->next->flags &= ~CF_READY;
1025} 1395 SvRV_set (coro_current, next_sv);
1026 1396
1397 LOCK;
1398 free_coro_mortal (aTHX);
1399 coro_mortal = prev_sv;
1400 UNLOCK;
1401}
1402
1027static void 1403static void
1028prepare_cede (struct transfer_args *ta) 1404prepare_cede (pTHX_ struct transfer_args *ta)
1029{ 1405{
1030 api_ready (coro_current); 1406 api_ready (coro_current);
1031 prepare_schedule (ta); 1407 prepare_schedule (aTHX_ ta);
1032} 1408}
1033 1409
1034static int 1410static int
1035prepare_cede_notself (struct transfer_args *ta) 1411prepare_cede_notself (pTHX_ struct transfer_args *ta)
1036{ 1412{
1037 if (coro_nready) 1413 if (coro_nready)
1038 { 1414 {
1039 SV *prev = SvRV (coro_current); 1415 SV *prev = SvRV (coro_current);
1040 prepare_schedule (ta); 1416 prepare_schedule (aTHX_ ta);
1041 api_ready (prev); 1417 api_ready (prev);
1042 return 1; 1418 return 1;
1043 } 1419 }
1044 else 1420 else
1045 return 0; 1421 return 0;
1046} 1422}
1047 1423
1048static void 1424static void
1049api_schedule (void) 1425api_schedule (void)
1050{ 1426{
1427 dTHX;
1051 struct transfer_args ta; 1428 struct transfer_args ta;
1052 1429
1053 prepare_schedule (&ta); 1430 prepare_schedule (aTHX_ &ta);
1054 TRANSFER (ta); 1431 TRANSFER (ta);
1055} 1432}
1056 1433
1057static int 1434static int
1058api_cede (void) 1435api_cede (void)
1059{ 1436{
1437 dTHX;
1060 struct transfer_args ta; 1438 struct transfer_args ta;
1061 1439
1062 prepare_cede (&ta); 1440 prepare_cede (aTHX_ &ta);
1063 1441
1064 if (ta.prev != ta.next) 1442 if (expect_true (ta.prev != ta.next))
1065 { 1443 {
1066 TRANSFER (ta); 1444 TRANSFER (ta);
1067 return 1; 1445 return 1;
1068 } 1446 }
1069 else 1447 else
… …
1071} 1449}
1072 1450
1073static int 1451static int
1074api_cede_notself (void) 1452api_cede_notself (void)
1075{ 1453{
1454 dTHX;
1076 struct transfer_args ta; 1455 struct transfer_args ta;
1077 1456
1078 if (prepare_cede_notself (&ta)) 1457 if (prepare_cede_notself (aTHX_ &ta))
1079 { 1458 {
1080 TRANSFER (ta); 1459 TRANSFER (ta);
1081 return 1; 1460 return 1;
1082 } 1461 }
1083 else 1462 else
1084 return 0; 1463 return 0;
1085} 1464}
1086 1465
1466static void
1467api_trace (SV *coro_sv, int flags)
1468{
1469 dTHX;
1470 struct coro *coro = SvSTATE (coro_sv);
1471
1472 if (flags & CC_TRACE)
1473 {
1474 if (!coro->cctx)
1475 coro->cctx = cctx_new ();
1476 else if (!(coro->cctx->flags & CC_TRACE))
1477 croak ("cannot enable tracing on coroutine with custom stack");
1478
1479 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1480 }
1481 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1482 {
1483 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1484
1485 if (coro->flags & CF_RUNNING)
1486 PL_runops = RUNOPS_DEFAULT;
1487 else
1488 coro->slot->runops = RUNOPS_DEFAULT;
1489 }
1490}
1491
1087MODULE = Coro::State PACKAGE = Coro::State 1492MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1088 1493
1089PROTOTYPES: DISABLE 1494PROTOTYPES: DISABLE
1090 1495
1091BOOT: 1496BOOT:
1092{ 1497{
1093#ifdef USE_ITHREADS 1498#ifdef USE_ITHREADS
1094 MUTEX_INIT (&coro_mutex); 1499 MUTEX_INIT (&coro_mutex);
1095#endif 1500#endif
1096 BOOT_PAGESIZE; 1501 BOOT_PAGESIZE;
1097 1502
1503 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1504 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1505
1506 hv_sig = coro_get_hv ("SIG", TRUE);
1507 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
1508 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
1509
1510 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1511 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1512
1098 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1513 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1099 1514
1515 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1516 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1100 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1517 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1101 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1102 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1103 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1104 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1518 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1105 1519
1106 main_mainstack = PL_mainstack; 1520 main_mainstack = PL_mainstack;
1521 main_top_env = PL_top_env;
1522
1523 while (main_top_env->je_prev)
1524 main_top_env = main_top_env->je_prev;
1107 1525
1108 coroapi.ver = CORO_API_VERSION; 1526 coroapi.ver = CORO_API_VERSION;
1109 coroapi.transfer = api_transfer; 1527 coroapi.transfer = api_transfer;
1110 1528
1111 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1529 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
… …
1118 struct coro *coro; 1536 struct coro *coro;
1119 HV *hv; 1537 HV *hv;
1120 int i; 1538 int i;
1121 1539
1122 Newz (0, coro, 1, struct coro); 1540 Newz (0, coro, 1, struct coro);
1123 coro->args = newAV (); 1541 coro->args = newAV ();
1124 coro->save = CORO_SAVE_ALL;
1125 coro->flags = CF_NEW; 1542 coro->flags = CF_NEW;
1126 1543
1544 if (coro_first) coro_first->prev = coro;
1545 coro->next = coro_first;
1546 coro_first = coro;
1547
1127 hv = newHV (); 1548 coro->hv = hv = newHV ();
1128 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1549 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1129 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1550 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1130 1551
1552 av_extend (coro->args, items - 1);
1131 for (i = 1; i < items; i++) 1553 for (i = 1; i < items; i++)
1132 av_push (coro->args, newSVsv (ST (i))); 1554 av_push (coro->args, newSVsv (ST (i)));
1133} 1555}
1134 OUTPUT: 1556 OUTPUT:
1135 RETVAL 1557 RETVAL
1136 1558
1137int 1559# these not obviously related functions are all rolled into the same xs
1138save (SV *coro, int new_save = -1) 1560# function to increase chances that they all will call transfer with the same
1139 CODE: 1561# stack offset
1140 RETVAL = api_save (coro, new_save);
1141 OUTPUT:
1142 RETVAL
1143
1144void 1562void
1145_set_stacklevel (...) 1563_set_stacklevel (...)
1146 ALIAS: 1564 ALIAS:
1147 Coro::State::transfer = 1 1565 Coro::State::transfer = 1
1148 Coro::schedule = 2 1566 Coro::schedule = 2
… …
1161 1579
1162 case 1: 1580 case 1:
1163 if (items != 2) 1581 if (items != 2)
1164 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1582 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1165 1583
1166 prepare_transfer (&ta, ST (0), ST (1)); 1584 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1167 break; 1585 break;
1168 1586
1169 case 2: 1587 case 2:
1170 prepare_schedule (&ta); 1588 prepare_schedule (aTHX_ &ta);
1171 break; 1589 break;
1172 1590
1173 case 3: 1591 case 3:
1174 prepare_cede (&ta); 1592 prepare_cede (aTHX_ &ta);
1175 break; 1593 break;
1176 1594
1177 case 4: 1595 case 4:
1178 if (!prepare_cede_notself (&ta)) 1596 if (!prepare_cede_notself (aTHX_ &ta))
1179 XSRETURN_EMPTY; 1597 XSRETURN_EMPTY;
1180 1598
1181 break; 1599 break;
1182 } 1600 }
1183 1601
1184 BARRIER; 1602 BARRIER;
1185 TRANSFER (ta); 1603 TRANSFER (ta);
1186}
1187 1604
1188void 1605 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1189_clone_state_from (SV *dst, SV *src) 1606 XSRETURN_YES;
1607}
1608
1609bool
1610_destroy (SV *coro_sv)
1190 CODE: 1611 CODE:
1191{ 1612 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1192 struct coro *coro_src = SvSTATE (src); 1613 OUTPUT:
1193 1614 RETVAL
1194 sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1195
1196 ++coro_src->refcnt;
1197 sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1198}
1199 1615
1200void 1616void
1201_exit (code) 1617_exit (code)
1202 int code 1618 int code
1203 PROTOTYPE: $ 1619 PROTOTYPE: $
1204 CODE: 1620 CODE:
1205 _exit (code); 1621 _exit (code);
1206 1622
1207int 1623int
1624cctx_stacksize (int new_stacksize = 0)
1625 CODE:
1626 RETVAL = coro_stacksize;
1627 if (new_stacksize)
1628 coro_stacksize = new_stacksize;
1629 OUTPUT:
1630 RETVAL
1631
1632int
1208cctx_count () 1633cctx_count ()
1209 CODE: 1634 CODE:
1210 RETVAL = cctx_count; 1635 RETVAL = cctx_count;
1211 OUTPUT: 1636 OUTPUT:
1212 RETVAL 1637 RETVAL
… …
1216 CODE: 1641 CODE:
1217 RETVAL = cctx_idle; 1642 RETVAL = cctx_idle;
1218 OUTPUT: 1643 OUTPUT:
1219 RETVAL 1644 RETVAL
1220 1645
1646void
1647list ()
1648 PPCODE:
1649{
1650 struct coro *coro;
1651 for (coro = coro_first; coro; coro = coro->next)
1652 if (coro->hv)
1653 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1654}
1655
1656void
1657call (Coro::State coro, SV *coderef)
1658 ALIAS:
1659 eval = 1
1660 CODE:
1661{
1662 if (coro->mainstack)
1663 {
1664 struct coro temp;
1665
1666 if (!(coro->flags & CF_RUNNING))
1667 {
1668 save_perl (aTHX_ &temp);
1669 load_perl (aTHX_ coro);
1670 }
1671
1672 {
1673 dSP;
1674 ENTER;
1675 SAVETMPS;
1676 PUSHMARK (SP);
1677 PUTBACK;
1678
1679 if (ix)
1680 eval_sv (coderef, 0);
1681 else
1682 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1683
1684 SPAGAIN;
1685 FREETMPS;
1686 LEAVE;
1687 PUTBACK;
1688 }
1689
1690 if (!(coro->flags & CF_RUNNING))
1691 {
1692 save_perl (aTHX_ coro);
1693 load_perl (aTHX_ &temp);
1694 }
1695 }
1696}
1697
1698SV *
1699is_ready (Coro::State coro)
1700 PROTOTYPE: $
1701 ALIAS:
1702 is_ready = CF_READY
1703 is_running = CF_RUNNING
1704 is_new = CF_NEW
1705 is_destroyed = CF_DESTROYED
1706 CODE:
1707 RETVAL = boolSV (coro->flags & ix);
1708 OUTPUT:
1709 RETVAL
1710
1711void
1712api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1713
1714SV *
1715has_stack (Coro::State coro)
1716 PROTOTYPE: $
1717 CODE:
1718 RETVAL = boolSV (!!coro->cctx);
1719 OUTPUT:
1720 RETVAL
1721
1722int
1723is_traced (Coro::State coro)
1724 PROTOTYPE: $
1725 CODE:
1726 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1727 OUTPUT:
1728 RETVAL
1729
1730IV
1731rss (Coro::State coro)
1732 PROTOTYPE: $
1733 ALIAS:
1734 usecount = 1
1735 CODE:
1736 switch (ix)
1737 {
1738 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1739 case 1: RETVAL = coro->usecount; break;
1740 }
1741 OUTPUT:
1742 RETVAL
1743
1744
1221MODULE = Coro::State PACKAGE = Coro 1745MODULE = Coro::State PACKAGE = Coro
1222 1746
1223BOOT: 1747BOOT:
1224{ 1748{
1225 int i; 1749 int i;
1226 1750
1751 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1752 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1753 av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
1754
1755 coro_current = coro_get_sv ("Coro::current", FALSE);
1756 SvREADONLY_on (coro_current);
1757
1227 coro_stash = gv_stashpv ("Coro", TRUE); 1758 coro_stash = gv_stashpv ("Coro", TRUE);
1228 1759
1229 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1760 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1230 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1761 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1231 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1762 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1232 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1763 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1233 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1764 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1234 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1765 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1235 1766
1236 coro_current = get_sv ("Coro::current", FALSE);
1237 SvREADONLY_on (coro_current);
1238
1239 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1767 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1240 coro_ready[i] = newAV (); 1768 coro_ready[i] = newAV ();
1241 1769
1242 { 1770 {
1243 SV *sv = perl_get_sv("Coro::API", 1); 1771 SV *sv = perl_get_sv ("Coro::API", TRUE);
1772 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1244 1773
1245 coroapi.schedule = api_schedule; 1774 coroapi.schedule = api_schedule;
1246 coroapi.save = api_save;
1247 coroapi.cede = api_cede; 1775 coroapi.cede = api_cede;
1248 coroapi.cede_notself = api_cede_notself; 1776 coroapi.cede_notself = api_cede_notself;
1249 coroapi.ready = api_ready; 1777 coroapi.ready = api_ready;
1250 coroapi.is_ready = api_is_ready; 1778 coroapi.is_ready = api_is_ready;
1251 coroapi.nready = &coro_nready; 1779 coroapi.nready = &coro_nready;
… …
1292 CODE: 1820 CODE:
1293 RETVAL = boolSV (api_ready (self)); 1821 RETVAL = boolSV (api_ready (self));
1294 OUTPUT: 1822 OUTPUT:
1295 RETVAL 1823 RETVAL
1296 1824
1297SV *
1298is_ready (SV *self)
1299 PROTOTYPE: $
1300 CODE:
1301 RETVAL = boolSV (api_is_ready (self));
1302 OUTPUT:
1303 RETVAL
1304
1305int 1825int
1306nready (...) 1826nready (...)
1307 PROTOTYPE: 1827 PROTOTYPE:
1308 CODE: 1828 CODE:
1309 RETVAL = coro_nready; 1829 RETVAL = coro_nready;
1310 OUTPUT: 1830 OUTPUT:
1311 RETVAL 1831 RETVAL
1312 1832
1833void
1834throw (Coro::State self, SV *throw = &PL_sv_undef)
1835 PROTOTYPE: $;$
1836 CODE:
1837 SvREFCNT_dec (self->throw);
1838 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1839
1840# for async_pool speedup
1841void
1842_pool_1 (SV *cb)
1843 CODE:
1844{
1845 struct coro *coro = SvSTATE (coro_current);
1846 HV *hv = (HV *)SvRV (coro_current);
1847 AV *defav = GvAV (PL_defgv);
1848 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
1849 AV *invoke_av;
1850 int i, len;
1851
1852 if (!invoke)
1853 croak ("\3async_pool terminate\2\n");
1854
1855 SvREFCNT_dec (coro->saved_deffh);
1856 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1857
1858 hv_store (hv, "desc", sizeof ("desc") - 1,
1859 newSVpvn (strpair ("[async_pool]")), 0);
1860
1861 invoke_av = (AV *)SvRV (invoke);
1862 len = av_len (invoke_av);
1863
1864 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1865
1866 if (len > 0)
1867 {
1868 av_fill (defav, len - 1);
1869 for (i = 0; i < len; ++i)
1870 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1871 }
1872
1873 SvREFCNT_dec (invoke);
1874}
1875
1876void
1877_pool_2 (SV *cb)
1878 CODE:
1879{
1880 struct coro *coro = SvSTATE (coro_current);
1881
1882 sv_setsv (cb, &PL_sv_undef);
1883
1884 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1885 coro->saved_deffh = 0;
1886
1887 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1888 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1889 croak ("\3async_pool terminate\2\n");
1890
1891 av_clear (GvAV (PL_defgv));
1892 hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
1893 newSVpvn (strpair ("[async_pool idle]")), 0);
1894
1895 coro->prio = 0;
1896
1897 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1898 api_trace (coro_current, 0);
1899
1900 av_push (av_async_pool, newSVsv (coro_current));
1901}
1902
1903
1313MODULE = Coro::State PACKAGE = Coro::AIO 1904MODULE = Coro::State PACKAGE = Coro::AIO
1314 1905
1315SV * 1906SV *
1316_get_state () 1907_get_state ()
1317 CODE: 1908 CODE:

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