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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 1.207 by root, Tue Oct 9 22:29:27 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 AV *args; /* data associated with this coroutine (initial args) */
165 AV *args; 227 int refcnt; /* coroutines are refcounted, yes */
166 int refcnt;
167 int save; /* CORO_SAVE flags */
168 int flags; /* CF_ flags */ 228 int flags; /* CF_ flags */
229 HV *hv; /* the perl hash associated with this coro, if any */
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; /* exception to be thrown */
237
238 /* async_pool */
239 SV *saved_deffh;
240
241 /* linked list */
242 struct coro *next, *prev;
183}; 243};
184 244
185typedef struct coro *Coro__State; 245typedef struct coro *Coro__State;
186typedef struct coro *Coro__State_or_hashref; 246typedef struct coro *Coro__State_or_hashref;
187 247
248/** Coro ********************************************************************/
249
250#define PRIO_MAX 3
251#define PRIO_HIGH 1
252#define PRIO_NORMAL 0
253#define PRIO_LOW -1
254#define PRIO_IDLE -3
255#define PRIO_MIN -4
256
257/* for Coro.pm */
258static SV *coro_current;
259static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
260static int coro_nready;
261static struct coro *coro_first;
262
263/** lowlevel stuff **********************************************************/
264
265static SV *
266coro_get_sv (const char *name, int create)
267{
268#if PERL_VERSION_ATLEAST (5,9,0)
269 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
270 get_sv (name, create);
271#endif
272 return get_sv (name, create);
273}
274
188static AV * 275static AV *
276coro_get_av (const char *name, int create)
277{
278#if PERL_VERSION_ATLEAST (5,9,0)
279 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
280 get_av (name, create);
281#endif
282 return get_av (name, create);
283}
284
285static HV *
286coro_get_hv (const char *name, int create)
287{
288#if PERL_VERSION_ATLEAST (5,9,0)
289 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
290 get_hv (name, create);
291#endif
292 return get_hv (name, create);
293}
294
295static AV *
189coro_clone_padlist (CV *cv) 296coro_clone_padlist (pTHX_ CV *cv)
190{ 297{
191 AV *padlist = CvPADLIST (cv); 298 AV *padlist = CvPADLIST (cv);
192 AV *newpadlist, *newpad; 299 AV *newpadlist, *newpad;
193 300
194 newpadlist = newAV (); 301 newpadlist = newAV ();
… …
206 313
207 return newpadlist; 314 return newpadlist;
208} 315}
209 316
210static void 317static void
211free_padlist (AV *padlist) 318free_padlist (pTHX_ AV *padlist)
212{ 319{
213 /* may be during global destruction */ 320 /* may be during global destruction */
214 if (SvREFCNT (padlist)) 321 if (SvREFCNT (padlist))
215 { 322 {
216 I32 i = AvFILLp (padlist); 323 I32 i = AvFILLp (padlist);
… …
237 AV *padlist; 344 AV *padlist;
238 AV *av = (AV *)mg->mg_obj; 345 AV *av = (AV *)mg->mg_obj;
239 346
240 /* casting is fun. */ 347 /* casting is fun. */
241 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 348 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
242 free_padlist (padlist); 349 free_padlist (aTHX_ padlist);
243 350
244 SvREFCNT_dec (av); 351 SvREFCNT_dec (av);
245 352
246 return 0; 353 return 0;
247} 354}
… …
255 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 362 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
256 ? SvMAGIC (cv) \ 363 ? SvMAGIC (cv) \
257 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 364 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
258 : 0 365 : 0
259 366
367static struct coro *
368SvSTATE_ (pTHX_ SV *coro)
369{
370 HV *stash;
371 MAGIC *mg;
372
373 if (SvROK (coro))
374 coro = SvRV (coro);
375
376 if (expect_false (SvTYPE (coro) != SVt_PVHV))
377 croak ("Coro::State object required");
378
379 stash = SvSTASH (coro);
380 if (expect_false (stash != coro_stash && stash != coro_state_stash))
381 {
382 /* very slow, but rare, check */
383 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
384 croak ("Coro::State object required");
385 }
386
387 mg = CORO_MAGIC (coro);
388 return (struct coro *)mg->mg_ptr;
389}
390
391#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
392
260/* the next two functions merely cache the padlists */ 393/* the next two functions merely cache the padlists */
261static void 394static void
262get_padlist (CV *cv) 395get_padlist (pTHX_ CV *cv)
263{ 396{
264 MAGIC *mg = CORO_MAGIC (cv); 397 MAGIC *mg = CORO_MAGIC (cv);
265 AV *av; 398 AV *av;
266 399
267 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 400 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
268 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 401 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
269 else 402 else
270 { 403 {
271#if PREFER_PERL_FUNCTIONS 404#if CORO_PREFER_PERL_FUNCTIONS
272 /* this is probably cleaner, but also slower? */ 405 /* this is probably cleaner, but also slower? */
273 CV *cp = Perl_cv_clone (cv); 406 CV *cp = Perl_cv_clone (cv);
274 CvPADLIST (cv) = CvPADLIST (cp); 407 CvPADLIST (cv) = CvPADLIST (cp);
275 CvPADLIST (cp) = 0; 408 CvPADLIST (cp) = 0;
276 SvREFCNT_dec (cp); 409 SvREFCNT_dec (cp);
277#else 410#else
278 CvPADLIST (cv) = coro_clone_padlist (cv); 411 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
279#endif 412#endif
280 } 413 }
281} 414}
282 415
283static void 416static void
284put_padlist (CV *cv) 417put_padlist (pTHX_ CV *cv)
285{ 418{
286 MAGIC *mg = CORO_MAGIC (cv); 419 MAGIC *mg = CORO_MAGIC (cv);
287 AV *av; 420 AV *av;
288 421
289 if (!mg) 422 if (expect_false (!mg))
290 { 423 {
291 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); 424 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
292 mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 425 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
293 mg->mg_virtual = &vtbl_coro; 426 mg->mg_virtual = &vtbl_coro;
294 mg->mg_obj = (SV *)newAV (); 427 mg->mg_obj = (SV *)newAV ();
295 } 428 }
296 429
297 av = (AV *)mg->mg_obj; 430 av = (AV *)mg->mg_obj;
298 431
299 if (AvFILLp (av) >= AvMAX (av)) 432 if (expect_false (AvFILLp (av) >= AvMAX (av)))
300 av_extend (av, AvMAX (av) + 1); 433 av_extend (av, AvMAX (av) + 1);
301 434
302 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 435 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
303} 436}
304 437
305#define SB do { 438/** load & save, init *******************************************************/
306#define SE } while (0)
307 439
308#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
309
310static void 440static void
311load_perl (Coro__State c) 441load_perl (pTHX_ Coro__State c)
312{ 442{
443 perl_slots *slot = c->slot;
444 c->slot = 0;
445
446 PL_mainstack = c->mainstack;
447
448 GvSV (PL_defgv) = slot->defsv;
449 GvAV (PL_defgv) = slot->defav;
450 GvSV (PL_errgv) = slot->errsv;
451 GvSV (irsgv) = slot->irsgv;
452
313#define VAR(name,type) PL_ ## name = c->name; 453 #define VAR(name,type) PL_ ## name = slot->name;
314# include "state.h" 454 # include "state.h"
315#undef VAR 455 #undef VAR
316 456
317 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 457 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
318 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 458 /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
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 }
331 459
332 { 460 {
333 dSP; 461 dSP;
462
334 CV *cv; 463 CV *cv;
335 464
336 /* now do the ugly restore mess */ 465 /* now do the ugly restore mess */
337 while ((cv = (CV *)POPs)) 466 while (expect_true (cv = (CV *)POPs))
338 { 467 {
339 put_padlist (cv); /* mark this padlist as available */ 468 put_padlist (aTHX_ cv); /* mark this padlist as available */
340 CvDEPTH (cv) = PTR2IV (POPs); 469 CvDEPTH (cv) = PTR2IV (POPs);
341 CvPADLIST (cv) = (AV *)POPs; 470 CvPADLIST (cv) = (AV *)POPs;
342 } 471 }
343 472
344 PUTBACK; 473 PUTBACK;
345 } 474 }
346} 475}
347 476
348static void 477static void
349save_perl (Coro__State c) 478save_perl (pTHX_ Coro__State c)
350{ 479{
351 { 480 {
352 dSP; 481 dSP;
353 I32 cxix = cxstack_ix; 482 I32 cxix = cxstack_ix;
354 PERL_CONTEXT *ccstk = cxstack; 483 PERL_CONTEXT *ccstk = cxstack;
… …
357 /* 486 /*
358 * the worst thing you can imagine happens first - we have to save 487 * the worst thing you can imagine happens first - we have to save
359 * (and reinitialize) all cv's in the whole callchain :( 488 * (and reinitialize) all cv's in the whole callchain :(
360 */ 489 */
361 490
362 EXTEND (SP, 3 + 1);
363 PUSHs (Nullsv); 491 XPUSHs (Nullsv);
364 /* this loop was inspired by pp_caller */ 492 /* this loop was inspired by pp_caller */
365 for (;;) 493 for (;;)
366 { 494 {
367 while (cxix >= 0) 495 while (expect_true (cxix >= 0))
368 { 496 {
369 PERL_CONTEXT *cx = &ccstk[cxix--]; 497 PERL_CONTEXT *cx = &ccstk[cxix--];
370 498
371 if (CxTYPE (cx) == CXt_SUB) 499 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
372 { 500 {
373 CV *cv = cx->blk_sub.cv; 501 CV *cv = cx->blk_sub.cv;
374 502
375 if (CvDEPTH (cv)) 503 if (expect_true (CvDEPTH (cv)))
376 { 504 {
377 EXTEND (SP, 3); 505 EXTEND (SP, 3);
378 PUSHs ((SV *)CvPADLIST (cv)); 506 PUSHs ((SV *)CvPADLIST (cv));
379 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 507 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
380 PUSHs ((SV *)cv); 508 PUSHs ((SV *)cv);
381 509
382 CvDEPTH (cv) = 0; 510 CvDEPTH (cv) = 0;
383 get_padlist (cv); 511 get_padlist (aTHX_ cv);
384 } 512 }
385 } 513 }
386 } 514 }
387 515
388 if (top_si->si_type == PERLSI_MAIN) 516 if (expect_true (top_si->si_type == PERLSI_MAIN))
389 break; 517 break;
390 518
391 top_si = top_si->si_prev; 519 top_si = top_si->si_prev;
392 ccstk = top_si->si_cxstack; 520 ccstk = top_si->si_cxstack;
393 cxix = top_si->si_cxix; 521 cxix = top_si->si_cxix;
394 } 522 }
395 523
396 PUTBACK; 524 PUTBACK;
397 } 525 }
398 526
399 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 527 /* allocate some space on the context stack for our purposes */
400 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 528 /* we manually unroll here, as usually 2 slots is enough */
401 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 529 if (SLOT_COUNT >= 1) CXINC;
402 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 530 if (SLOT_COUNT >= 2) CXINC;
531 if (SLOT_COUNT >= 3) CXINC;
532 {
533 int i;
534 for (i = 3; i < SLOT_COUNT; ++i)
535 CXINC;
536 }
537 cxstack_ix -= SLOT_COUNT; /* undo allocation */
403 538
539 c->mainstack = PL_mainstack;
540
541 {
542 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
543
544 slot->defav = GvAV (PL_defgv);
545 slot->defsv = DEFSV;
546 slot->errsv = ERRSV;
547 slot->irsgv = GvSV (irsgv);
548
404#define VAR(name,type)c->name = PL_ ## name; 549 #define VAR(name,type) slot->name = PL_ ## name;
405# include "state.h" 550 # include "state.h"
406#undef VAR 551 #undef VAR
552 }
407} 553}
408 554
409/* 555/*
410 * allocate various perl stacks. This is an exact copy 556 * allocate various perl stacks. This is an exact copy
411 * of perl.c:init_stacks, except that it uses less memory 557 * of perl.c:init_stacks, except that it uses less memory
412 * on the (sometimes correct) assumption that coroutines do 558 * on the (sometimes correct) assumption that coroutines do
413 * not usually need a lot of stackspace. 559 * not usually need a lot of stackspace.
414 */ 560 */
415#if PREFER_PERL_FUNCTIONS 561#if CORO_PREFER_PERL_FUNCTIONS
416# define coro_init_stacks init_stacks 562# define coro_init_stacks init_stacks
417#else 563#else
418static void 564static void
419coro_init_stacks () 565coro_init_stacks (pTHX)
420{ 566{
421 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 567 PL_curstackinfo = new_stackinfo(32, 8);
422 PL_curstackinfo->si_type = PERLSI_MAIN; 568 PL_curstackinfo->si_type = PERLSI_MAIN;
423 PL_curstack = PL_curstackinfo->si_stack; 569 PL_curstack = PL_curstackinfo->si_stack;
424 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 570 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
425 571
426 PL_stack_base = AvARRAY(PL_curstack); 572 PL_stack_base = AvARRAY(PL_curstack);
427 PL_stack_sp = PL_stack_base; 573 PL_stack_sp = PL_stack_base;
428 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 574 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
429 575
430 New(50,PL_tmps_stack,128,SV*); 576 New(50,PL_tmps_stack,32,SV*);
431 PL_tmps_floor = -1; 577 PL_tmps_floor = -1;
432 PL_tmps_ix = -1; 578 PL_tmps_ix = -1;
433 PL_tmps_max = 128; 579 PL_tmps_max = 32;
434 580
435 New(54,PL_markstack,32,I32); 581 New(54,PL_markstack,16,I32);
436 PL_markstack_ptr = PL_markstack; 582 PL_markstack_ptr = PL_markstack;
437 PL_markstack_max = PL_markstack + 32; 583 PL_markstack_max = PL_markstack + 16;
438 584
439#ifdef SET_MARK_OFFSET 585#ifdef SET_MARK_OFFSET
440 SET_MARK_OFFSET; 586 SET_MARK_OFFSET;
441#endif 587#endif
442 588
443 New(54,PL_scopestack,32,I32); 589 New(54,PL_scopestack,8,I32);
444 PL_scopestack_ix = 0; 590 PL_scopestack_ix = 0;
445 PL_scopestack_max = 32; 591 PL_scopestack_max = 8;
446 592
447 New(54,PL_savestack,64,ANY); 593 New(54,PL_savestack,24,ANY);
448 PL_savestack_ix = 0; 594 PL_savestack_ix = 0;
449 PL_savestack_max = 64; 595 PL_savestack_max = 24;
450 596
451#if !PERL_VERSION_ATLEAST (5,9,0) 597#if !PERL_VERSION_ATLEAST (5,9,0)
452 New(54,PL_retstack,16,OP*); 598 New(54,PL_retstack,4,OP*);
453 PL_retstack_ix = 0; 599 PL_retstack_ix = 0;
454 PL_retstack_max = 16; 600 PL_retstack_max = 4;
455#endif 601#endif
456} 602}
457#endif 603#endif
458 604
459/* 605/*
460 * destroy the stacks, the callchain etc... 606 * destroy the stacks, the callchain etc...
461 */ 607 */
462static void 608static void
463coro_destroy_stacks () 609coro_destroy_stacks (pTHX)
464{ 610{
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) 611 while (PL_curstackinfo->si_next)
479 PL_curstackinfo = PL_curstackinfo->si_next; 612 PL_curstackinfo = PL_curstackinfo->si_next;
480 613
481 while (PL_curstackinfo) 614 while (PL_curstackinfo)
482 { 615 {
… …
497#if !PERL_VERSION_ATLEAST (5,9,0) 630#if !PERL_VERSION_ATLEAST (5,9,0)
498 Safefree (PL_retstack); 631 Safefree (PL_retstack);
499#endif 632#endif
500} 633}
501 634
502static void 635static size_t
503setup_coro (struct coro *coro) 636coro_rss (pTHX_ struct coro *coro)
637{
638 size_t rss = sizeof (*coro);
639
640 if (coro->mainstack)
641 {
642 perl_slots tmp_slot;
643 perl_slots *slot;
644
645 if (coro->flags & CF_RUNNING)
646 {
647 slot = &tmp_slot;
648
649 #define VAR(name,type) slot->name = PL_ ## name;
650 # include "state.h"
651 #undef VAR
652 }
653 else
654 slot = coro->slot;
655
656 rss += sizeof (slot->curstackinfo);
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY);
663
664#if !PERL_VERSION_ATLEAST (5,9,0)
665 rss += slot->retstack_max * sizeof (OP *);
666#endif
667 }
668
669 return rss;
670}
671
672/** coroutine stack handling ************************************************/
673
674static void
675coro_setup (pTHX_ struct coro *coro)
504{ 676{
505 /* 677 /*
506 * emulate part of the perl startup here. 678 * emulate part of the perl startup here.
507 */ 679 */
508
509 coro_init_stacks (); 680 coro_init_stacks (aTHX);
510 681
682 PL_runops = RUNOPS_DEFAULT;
511 PL_curcop = &PL_compiling; 683 PL_curcop = &PL_compiling;
512 PL_in_eval = EVAL_NULL; 684 PL_in_eval = EVAL_NULL;
685 PL_comppad = 0;
513 PL_curpm = 0; 686 PL_curpm = 0;
687 PL_curpad = 0;
514 PL_localizing = 0; 688 PL_localizing = 0;
515 PL_dirty = 0; 689 PL_dirty = 0;
516 PL_restartop = 0; 690 PL_restartop = 0;
691 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
692 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
693
694 GvSV (PL_defgv) = newSV (0);
695 GvAV (PL_defgv) = coro->args; coro->args = 0;
696 GvSV (PL_errgv) = newSV (0);
697 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
698 PL_rs = newSVsv (GvSV (irsgv));
699 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
517 700
518 { 701 {
519 dSP; 702 dSP;
520 LOGOP myop; 703 LOGOP myop;
521 704
522 SvREFCNT_dec (GvAV (PL_defgv));
523 GvAV (PL_defgv) = coro->args; coro->args = 0;
524
525 Zero (&myop, 1, LOGOP); 705 Zero (&myop, 1, LOGOP);
526 myop.op_next = Nullop; 706 myop.op_next = Nullop;
527 myop.op_flags = OPf_WANT_VOID; 707 myop.op_flags = OPf_WANT_VOID;
528 708
529 PUSHMARK (SP); 709 PUSHMARK (SP);
530 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 710 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
531 PUTBACK; 711 PUTBACK;
532 PL_op = (OP *)&myop; 712 PL_op = (OP *)&myop;
533 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 713 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
534 SPAGAIN; 714 SPAGAIN;
535 } 715 }
536 716
537 ENTER; /* necessary e.g. for dounwind */ 717 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
538} 718}
539 719
540static void 720static void
721coro_destroy (pTHX_ struct coro *coro)
722{
723 if (!IN_DESTRUCT)
724 {
725 /* restore all saved variables and stuff */
726 LEAVE_SCOPE (0);
727 assert (PL_tmps_floor == -1);
728
729 /* free all temporaries */
730 FREETMPS;
731 assert (PL_tmps_ix == -1);
732
733 /* unwind all extra stacks */
734 POPSTACK_TO (PL_mainstack);
735
736 /* unwind main stack */
737 dounwind (-1);
738 }
739
740 SvREFCNT_dec (GvSV (PL_defgv));
741 SvREFCNT_dec (GvAV (PL_defgv));
742 SvREFCNT_dec (GvSV (PL_errgv));
743 SvREFCNT_dec (PL_defoutgv);
744 SvREFCNT_dec (PL_rs);
745 SvREFCNT_dec (GvSV (irsgv));
746
747 SvREFCNT_dec (PL_diehook);
748 SvREFCNT_dec (PL_warnhook);
749
750 SvREFCNT_dec (coro->saved_deffh);
751 SvREFCNT_dec (coro->throw);
752
753 coro_destroy_stacks (aTHX);
754}
755
756static void
541free_coro_mortal () 757free_coro_mortal (pTHX)
542{ 758{
543 if (coro_mortal) 759 if (expect_true (coro_mortal))
544 { 760 {
545 SvREFCNT_dec (coro_mortal); 761 SvREFCNT_dec (coro_mortal);
546 coro_mortal = 0; 762 coro_mortal = 0;
547 } 763 }
548} 764}
549 765
766static int
767runops_trace (pTHX)
768{
769 COP *oldcop = 0;
770 int oldcxix = -2;
771 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
772 coro_cctx *cctx = coro->cctx;
773
774 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
775 {
776 PERL_ASYNC_CHECK ();
777
778 if (cctx->flags & CC_TRACE_ALL)
779 {
780 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
781 {
782 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
783 SV **bot, **top;
784 AV *av = newAV (); /* return values */
785 SV **cb;
786 dSP;
787
788 GV *gv = CvGV (cx->blk_sub.cv);
789 SV *fullname = sv_2mortal (newSV (0));
790 if (isGV (gv))
791 gv_efullname3 (fullname, gv, 0);
792
793 bot = PL_stack_base + cx->blk_oldsp + 1;
794 top = cx->blk_gimme == G_ARRAY ? SP + 1
795 : cx->blk_gimme == G_SCALAR ? bot + 1
796 : bot;
797
798 av_extend (av, top - bot);
799 while (bot < top)
800 av_push (av, SvREFCNT_inc (*bot++));
801
802 PL_runops = RUNOPS_DEFAULT;
803 ENTER;
804 SAVETMPS;
805 EXTEND (SP, 3);
806 PUSHMARK (SP);
807 PUSHs (&PL_sv_no);
808 PUSHs (fullname);
809 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
810 PUTBACK;
811 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
812 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
813 SPAGAIN;
814 FREETMPS;
815 LEAVE;
816 PL_runops = runops_trace;
817 }
818
819 if (oldcop != PL_curcop)
820 {
821 oldcop = PL_curcop;
822
823 if (PL_curcop != &PL_compiling)
824 {
825 SV **cb;
826
827 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
828 {
829 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
830
831 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
832 {
833 runops_proc_t old_runops = PL_runops;
834 dSP;
835 GV *gv = CvGV (cx->blk_sub.cv);
836 SV *fullname = sv_2mortal (newSV (0));
837
838 if (isGV (gv))
839 gv_efullname3 (fullname, gv, 0);
840
841 PL_runops = RUNOPS_DEFAULT;
842 ENTER;
843 SAVETMPS;
844 EXTEND (SP, 3);
845 PUSHMARK (SP);
846 PUSHs (&PL_sv_yes);
847 PUSHs (fullname);
848 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
849 PUTBACK;
850 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
851 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
852 SPAGAIN;
853 FREETMPS;
854 LEAVE;
855 PL_runops = runops_trace;
856 }
857
858 oldcxix = cxstack_ix;
859 }
860
861 if (cctx->flags & CC_TRACE_LINE)
862 {
863 dSP;
864
865 PL_runops = RUNOPS_DEFAULT;
866 ENTER;
867 SAVETMPS;
868 EXTEND (SP, 3);
869 PL_runops = RUNOPS_DEFAULT;
870 PUSHMARK (SP);
871 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
872 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
873 PUTBACK;
874 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
875 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
876 SPAGAIN;
877 FREETMPS;
878 LEAVE;
879 PL_runops = runops_trace;
880 }
881 }
882 }
883 }
884 }
885
886 TAINT_NOT;
887 return 0;
888}
889
550/* inject a fake call to Coro::State::_cctx_init into the execution */ 890/* inject a fake call to Coro::State::_cctx_init into the execution */
891/* _cctx_init should be careful, as it could be called at almost any time */
892/* during execution of a perl program */
551static void NOINLINE 893static void NOINLINE
552prepare_cctx (coro_cctx *cctx) 894cctx_prepare (pTHX_ coro_cctx *cctx)
553{ 895{
554 dSP; 896 dSP;
555 LOGOP myop; 897 LOGOP myop;
898
899 PL_top_env = &PL_start_env;
900
901 if (cctx->flags & CC_TRACE)
902 PL_runops = runops_trace;
556 903
557 Zero (&myop, 1, LOGOP); 904 Zero (&myop, 1, LOGOP);
558 myop.op_next = PL_op; 905 myop.op_next = PL_op;
559 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 906 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
560 907
… …
566 PL_op = (OP *)&myop; 913 PL_op = (OP *)&myop;
567 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 914 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
568 SPAGAIN; 915 SPAGAIN;
569} 916}
570 917
918/*
919 * this is a _very_ stripped down perl interpreter ;)
920 */
571static void 921static void
572coro_run (void *arg) 922cctx_run (void *arg)
573{ 923{
924 dTHX;
925
574 /* coro_run is the alternative tail of transfer(), so unlock here. */ 926 /* cctx_run is the alternative tail of transfer(), so unlock here. */
575 UNLOCK; 927 UNLOCK;
576 928
577 /* 929 /* we now skip the entersub that lead to transfer() */
578 * this is a _very_ stripped down perl interpreter ;) 930 PL_op = PL_op->op_next;
579 */
580 PL_top_env = &PL_start_env;
581 931
582 /* inject call to cctx_init */ 932 /* inject a fake subroutine call to cctx_init */
583 prepare_cctx ((coro_cctx *)arg); 933 cctx_prepare (aTHX_ (coro_cctx *)arg);
584 934
585 /* somebody will hit me for both perl_run and PL_restartop */ 935 /* somebody or something will hit me for both perl_run and PL_restartop */
586 PL_restartop = PL_op; 936 PL_restartop = PL_op;
587 perl_run (PL_curinterp); 937 perl_run (PL_curinterp);
588 938
589 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 939 /*
590 abort (); 940 * If perl-run returns we assume exit() was being called or the coro
941 * fell off the end, which seems to be the only valid (non-bug)
942 * reason for perl_run to return. We try to exit by jumping to the
943 * bootstrap-time "top" top_env, as we cannot restore the "main"
944 * coroutine as Coro has no such concept
945 */
946 PL_top_env = main_top_env;
947 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
591} 948}
592 949
593static coro_cctx * 950static coro_cctx *
594cctx_new () 951cctx_new ()
595{ 952{
596 coro_cctx *cctx; 953 coro_cctx *cctx;
954 void *stack_start;
955 size_t stack_size;
597 956
598 ++cctx_count; 957 ++cctx_count;
599 958
600 Newz (0, cctx, 1, coro_cctx); 959 Newz (0, cctx, 1, coro_cctx);
601 960
602#if HAVE_MMAP 961#if HAVE_MMAP
603
604 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 962 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
605 /* mmap supposedly does allocate-on-write for us */ 963 /* 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); 964 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
607 965
608 if (cctx->sptr == (void *)-1) 966 if (cctx->sptr != (void *)-1)
609 {
610 perror ("FATAL: unable to mmap stack for coroutine");
611 _exit (EXIT_FAILURE);
612 } 967 {
613
614# if STACKGUARD 968# if CORO_STACKGUARD
615 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 969 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
616# endif 970# endif
971 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
972 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
973 cctx->flags |= CC_MAPPED;
974 }
975 else
976#endif
977 {
978 cctx->ssize = coro_stacksize * (long)sizeof (long);
979 New (0, cctx->sptr, coro_stacksize, long);
617 980
618#else
619
620 cctx->ssize = STACKSIZE * (long)sizeof (long);
621 New (0, cctx->sptr, STACKSIZE, long);
622
623 if (!cctx->sptr) 981 if (!cctx->sptr)
624 { 982 {
625 perror ("FATAL: unable to malloc stack for coroutine"); 983 perror ("FATAL: unable to allocate stack for coroutine");
626 _exit (EXIT_FAILURE); 984 _exit (EXIT_FAILURE);
627 } 985 }
628 986
629#endif 987 stack_start = cctx->sptr;
988 stack_size = cctx->ssize;
989 }
630 990
631#if USE_VALGRIND 991 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
632 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 992 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);
639 993
640 return cctx; 994 return cctx;
641} 995}
642 996
643static void 997static void
… …
646 if (!cctx) 1000 if (!cctx)
647 return; 1001 return;
648 1002
649 --cctx_count; 1003 --cctx_count;
650 1004
651#if USE_VALGRIND 1005#if CORO_USE_VALGRIND
652 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1006 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
653#endif 1007#endif
654 1008
655#if HAVE_MMAP 1009#if HAVE_MMAP
1010 if (cctx->flags & CC_MAPPED)
656 munmap (cctx->sptr, cctx->ssize); 1011 munmap (cctx->sptr, cctx->ssize);
657#else 1012 else
1013#endif
658 Safefree (cctx->sptr); 1014 Safefree (cctx->sptr);
659#endif
660 1015
661 Safefree (cctx); 1016 Safefree (cctx);
662} 1017}
663 1018
1019/* wether this cctx should be destructed */
1020#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1021
664static coro_cctx * 1022static coro_cctx *
665cctx_get () 1023cctx_get (pTHX)
666{ 1024{
667 coro_cctx *cctx; 1025 while (expect_true (cctx_first))
668
669 if (cctx_first)
670 { 1026 {
671 cctx = cctx_first; 1027 coro_cctx *cctx = cctx_first;
672 cctx_first = cctx->next; 1028 cctx_first = cctx->next;
673 --cctx_idle; 1029 --cctx_idle;
674 } 1030
675 else 1031 if (expect_true (!CCTX_EXPIRED (cctx)))
676 { 1032 return cctx;
677 cctx = cctx_new (); 1033
678 PL_op = PL_op->op_next; 1034 cctx_destroy (cctx);
679 } 1035 }
680 1036
681 return cctx; 1037 return cctx_new ();
682} 1038}
683 1039
684static void 1040static void
685cctx_put (coro_cctx *cctx) 1041cctx_put (coro_cctx *cctx)
686{ 1042{
687 /* free another cctx if overlimit */ 1043 /* free another cctx if overlimit */
688 if (cctx_idle >= MAX_IDLE_CCTX) 1044 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
689 { 1045 {
690 coro_cctx *first = cctx_first; 1046 coro_cctx *first = cctx_first;
691 cctx_first = first->next; 1047 cctx_first = first->next;
692 --cctx_idle; 1048 --cctx_idle;
693 1049
694 assert (!first->inuse);
695 cctx_destroy (first); 1050 cctx_destroy (first);
696 } 1051 }
697 1052
698 ++cctx_idle; 1053 ++cctx_idle;
699 cctx->next = cctx_first; 1054 cctx->next = cctx_first;
700 cctx_first = cctx; 1055 cctx_first = cctx;
701} 1056}
702 1057
703/* never call directly, always through the coro_state_transfer global variable */ 1058/** coroutine switching *****************************************************/
1059
1060static void
1061transfer_check (pTHX_ struct coro *prev, struct coro *next)
1062{
1063 if (expect_true (prev != next))
1064 {
1065 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1066 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1067
1068 if (expect_false (next->flags & CF_RUNNING))
1069 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1070
1071 if (expect_false (next->flags & CF_DESTROYED))
1072 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1073
1074 if (
1075#if PERL_VERSION_ATLEAST (5,9,0)
1076 expect_false (PL_parser)
1077#else
1078 expect_false (PL_lex_state != LEX_NOTPARSING)
1079#endif
1080 )
1081 croak ("Coro::State::transfer called while parsing, but this is not supported");
1082 }
1083}
1084
1085/* always use the TRANSFER macro */
704static void NOINLINE 1086static void NOINLINE
705transfer (struct coro *prev, struct coro *next) 1087transfer (pTHX_ struct coro *prev, struct coro *next)
706{ 1088{
707 dSTACKLEVEL; 1089 dSTACKLEVEL;
708 1090
709 /* sometimes transfer is only called to set idle_sp */ 1091 /* sometimes transfer is only called to set idle_sp */
710 if (!next) 1092 if (expect_false (!next))
711 { 1093 {
712 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1094 ((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 */ 1095 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
714 } 1096 }
715 else if (prev != next) 1097 else if (expect_true (prev != next))
716 { 1098 {
717 coro_cctx *prev__cctx; 1099 coro_cctx *prev__cctx;
718 1100
719 if (prev->flags & CF_NEW) 1101 if (expect_false (prev->flags & CF_NEW))
720 { 1102 {
721 /* create a new empty context */ 1103 /* create a new empty context */
722 Newz (0, prev->cctx, 1, coro_cctx); 1104 Newz (0, prev->cctx, 1, coro_cctx);
723 prev->cctx->inuse = 1;
724 prev->flags &= ~CF_NEW; 1105 prev->flags &= ~CF_NEW;
725 prev->flags |= CF_RUNNING; 1106 prev->flags |= CF_RUNNING;
726 } 1107 }
727 1108
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; 1109 prev->flags &= ~CF_RUNNING;
736 next->flags |= CF_RUNNING; 1110 next->flags |= CF_RUNNING;
737 1111
738 LOCK; 1112 LOCK;
739 1113
740 if (next->flags & CF_NEW) 1114 if (expect_false (next->flags & CF_NEW))
741 { 1115 {
742 /* need to start coroutine */ 1116 /* need to start coroutine */
743 next->flags &= ~CF_NEW; 1117 next->flags &= ~CF_NEW;
744 /* first get rid of the old state */ 1118 /* first get rid of the old state */
745 save_perl (prev); 1119 save_perl (aTHX_ prev);
746 /* setup coroutine call */ 1120 /* setup coroutine call */
747 setup_coro (next); 1121 coro_setup (aTHX_ next);
748 /* need a new stack */
749 assert (!next->cctx);
750 } 1122 }
751 else 1123 else
752 { 1124 {
753 /* coroutine already started */ 1125 /* coroutine already started */
754 save_perl (prev); 1126 save_perl (aTHX_ prev);
755 load_perl (next); 1127 load_perl (aTHX_ next);
756 } 1128 }
757 1129
758 prev__cctx = prev->cctx; 1130 prev__cctx = prev->cctx;
759 1131
760 /* possibly "free" the cctx */ 1132 /* possibly "free" the cctx */
761 if (prev__cctx->idle_sp == STACKLEVEL) 1133 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
762 { 1134 {
763 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1135 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
764 assert (PL_top_env == prev__cctx->top_env); 1136 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
765 1137
766 prev->cctx = 0; 1138 prev->cctx = 0;
767 1139
1140 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1141 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1142 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1143 if (!next->cctx)
1144 next->cctx = cctx_get (aTHX);
1145
768 cctx_put (prev__cctx); 1146 cctx_put (prev__cctx);
769 prev__cctx->inuse = 0;
770 } 1147 }
771 1148
1149 ++next->usecount;
1150
772 if (!next->cctx) 1151 if (expect_true (!next->cctx))
773 {
774 next->cctx = cctx_get (); 1152 next->cctx = cctx_get (aTHX);
775 assert (!next->cctx->inuse);
776 next->cctx->inuse = 1;
777 }
778 1153
779 if (prev__cctx != next->cctx) 1154 if (expect_false (prev__cctx != next->cctx))
780 { 1155 {
781 prev__cctx->top_env = PL_top_env; 1156 prev__cctx->top_env = PL_top_env;
782 PL_top_env = next->cctx->top_env; 1157 PL_top_env = next->cctx->top_env;
783 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1158 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
784 } 1159 }
785 1160
786 free_coro_mortal (); 1161 free_coro_mortal (aTHX);
787
788 UNLOCK; 1162 UNLOCK;
1163
1164 if (expect_false (prev->throw || next->throw))
1165 {
1166 struct coro *coro = SvSTATE (coro_current);
1167
1168 if (coro->throw)
1169 {
1170 SV *exception = coro->throw;
1171 coro->throw = 0;
1172 sv_setsv (ERRSV, exception);
1173 croak (0);
1174 }
1175 }
789 } 1176 }
790} 1177}
791 1178
792struct transfer_args 1179struct transfer_args
793{ 1180{
794 struct coro *prev, *next; 1181 struct coro *prev, *next;
795}; 1182};
796 1183
797#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1184#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
1185#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
798 1186
1187/** high level stuff ********************************************************/
1188
799static void 1189static int
800coro_state_destroy (struct coro *coro) 1190coro_state_destroy (pTHX_ struct coro *coro)
801{ 1191{
802 if (coro->refcnt--) 1192 if (coro->flags & CF_DESTROYED)
803 return; 1193 return 0;
1194
1195 coro->flags |= CF_DESTROYED;
1196
1197 if (coro->flags & CF_READY)
1198 {
1199 /* reduce nready, as destroying a ready coro effectively unreadies it */
1200 /* alternative: look through all ready queues and remove the coro */
1201 LOCK;
1202 --coro_nready;
1203 UNLOCK;
1204 }
1205 else
1206 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
804 1207
805 if (coro->mainstack && coro->mainstack != main_mainstack) 1208 if (coro->mainstack && coro->mainstack != main_mainstack)
806 { 1209 {
807 struct coro temp; 1210 struct coro temp;
808 Zero (&temp, 1, struct coro);
809 temp.save = CORO_SAVE_ALL;
810 1211
811 if (coro->flags & CF_RUNNING) 1212 if (coro->flags & CF_RUNNING)
812 croak ("FATAL: tried to destroy currently running coroutine"); 1213 croak ("FATAL: tried to destroy currently running coroutine");
813 1214
814 save_perl (&temp); 1215 save_perl (aTHX_ &temp);
815 load_perl (coro); 1216 load_perl (aTHX_ coro);
816 1217
817 coro_destroy_stacks (); 1218 coro_destroy (aTHX_ coro);
818 1219
819 load_perl (&temp); /* this will get rid of defsv etc.. */ 1220 load_perl (aTHX_ &temp);
820 1221
821 coro->mainstack = 0; 1222 coro->slot = 0;
822 } 1223 }
823 1224
824 cctx_destroy (coro->cctx); 1225 cctx_destroy (coro->cctx);
825 SvREFCNT_dec (coro->args); 1226 SvREFCNT_dec (coro->args);
826 Safefree (coro); 1227
1228 if (coro->next) coro->next->prev = coro->prev;
1229 if (coro->prev) coro->prev->next = coro->next;
1230 if (coro == coro_first) coro_first = coro->next;
1231
1232 return 1;
827} 1233}
828 1234
829static int 1235static int
830coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1236coro_state_free (pTHX_ SV *sv, MAGIC *mg)
831{ 1237{
832 struct coro *coro = (struct coro *)mg->mg_ptr; 1238 struct coro *coro = (struct coro *)mg->mg_ptr;
833 mg->mg_ptr = 0; 1239 mg->mg_ptr = 0;
834 1240
1241 coro->hv = 0;
1242
1243 if (--coro->refcnt < 0)
1244 {
835 coro_state_destroy (coro); 1245 coro_state_destroy (aTHX_ coro);
1246 Safefree (coro);
1247 }
836 1248
837 return 0; 1249 return 0;
838} 1250}
839 1251
840static int 1252static int
… …
847 return 0; 1259 return 0;
848} 1260}
849 1261
850static MGVTBL coro_state_vtbl = { 1262static MGVTBL coro_state_vtbl = {
851 0, 0, 0, 0, 1263 0, 0, 0, 0,
852 coro_state_clear, 1264 coro_state_free,
853 0, 1265 0,
854#ifdef MGf_DUP 1266#ifdef MGf_DUP
855 coro_state_dup, 1267 coro_state_dup,
856#else 1268#else
857# define MGf_DUP 0 1269# define MGf_DUP 0
858#endif 1270#endif
859}; 1271};
860 1272
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 1273static void
884prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1274prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
885{ 1275{
886 ta->prev = SvSTATE (prev_sv); 1276 ta->prev = SvSTATE (prev_sv);
887 ta->next = SvSTATE (next_sv); 1277 ta->next = SvSTATE (next_sv);
1278 TRANSFER_CHECK (*ta);
888} 1279}
889 1280
890static void 1281static void
891api_transfer (SV *prev_sv, SV *next_sv) 1282api_transfer (SV *prev_sv, SV *next_sv)
892{ 1283{
1284 dTHX;
893 struct transfer_args ta; 1285 struct transfer_args ta;
894 1286
895 prepare_transfer (&ta, prev_sv, next_sv); 1287 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
896 TRANSFER (ta); 1288 TRANSFER (ta);
897} 1289}
898 1290
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 ********************************************************************/ 1291/** Coro ********************************************************************/
912 1292
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 1293static void
926coro_enq (SV *coro_sv) 1294coro_enq (pTHX_ SV *coro_sv)
927{ 1295{
928 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1296 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
929 coro_nready++;
930} 1297}
931 1298
932static SV * 1299static SV *
933coro_deq (int min_prio) 1300coro_deq (pTHX_ int min_prio)
934{ 1301{
935 int prio = PRIO_MAX - PRIO_MIN; 1302 int prio = PRIO_MAX - PRIO_MIN;
936 1303
937 min_prio -= PRIO_MIN; 1304 min_prio -= PRIO_MIN;
938 if (min_prio < 0) 1305 if (min_prio < 0)
939 min_prio = 0; 1306 min_prio = 0;
940 1307
941 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1308 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
942 if (AvFILLp (coro_ready [prio]) >= 0) 1309 if (AvFILLp (coro_ready [prio]) >= 0)
943 {
944 coro_nready--;
945 return av_shift (coro_ready [prio]); 1310 return av_shift (coro_ready [prio]);
946 }
947 1311
948 return 0; 1312 return 0;
949} 1313}
950 1314
951static int 1315static int
952api_ready (SV *coro_sv) 1316api_ready (SV *coro_sv)
953{ 1317{
1318 dTHX;
954 struct coro *coro; 1319 struct coro *coro;
955 1320
956 if (SvROK (coro_sv)) 1321 if (SvROK (coro_sv))
957 coro_sv = SvRV (coro_sv); 1322 coro_sv = SvRV (coro_sv);
958 1323
… …
962 return 0; 1327 return 0;
963 1328
964 coro->flags |= CF_READY; 1329 coro->flags |= CF_READY;
965 1330
966 LOCK; 1331 LOCK;
967 coro_enq (SvREFCNT_inc (coro_sv)); 1332 coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1333 ++coro_nready;
968 UNLOCK; 1334 UNLOCK;
969 1335
970 return 1; 1336 return 1;
971} 1337}
972 1338
973static int 1339static int
974api_is_ready (SV *coro_sv) 1340api_is_ready (SV *coro_sv)
975{ 1341{
1342 dTHX;
976 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1343 return !!(SvSTATE (coro_sv)->flags & CF_READY);
977} 1344}
978 1345
979static void 1346static void
980prepare_schedule (struct transfer_args *ta) 1347prepare_schedule (pTHX_ struct transfer_args *ta)
981{ 1348{
982 SV *prev, *next; 1349 SV *prev_sv, *next_sv;
983 1350
984 for (;;) 1351 for (;;)
985 { 1352 {
986 LOCK; 1353 LOCK;
987 next = coro_deq (PRIO_MIN); 1354 next_sv = coro_deq (aTHX_ PRIO_MIN);
1355
1356 /* nothing to schedule: call the idle handler */
1357 if (expect_false (!next_sv))
1358 {
1359 dSP;
1360 UNLOCK;
1361
1362 ENTER;
1363 SAVETMPS;
1364
1365 PUSHMARK (SP);
1366 PUTBACK;
1367 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1368
1369 FREETMPS;
1370 LEAVE;
1371 continue;
1372 }
1373
1374 ta->next = SvSTATE (next_sv);
1375
1376 /* cannot transfer to destroyed coros, skip and look for next */
1377 if (expect_false (ta->next->flags & CF_DESTROYED))
1378 {
1379 UNLOCK;
1380 SvREFCNT_dec (next_sv);
1381 /* coro_nready is already taken care of by destroy */
1382 continue;
1383 }
1384
1385 --coro_nready;
988 UNLOCK; 1386 UNLOCK;
989
990 if (next)
991 break; 1387 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 } 1388 }
1006 }
1007
1008 prev = SvRV (coro_current);
1009 SvRV_set (coro_current, next);
1010 1389
1011 /* free this only after the transfer */ 1390 /* free this only after the transfer */
1012 LOCK; 1391 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); 1392 ta->prev = SvSTATE (prev_sv);
1021 ta->next = SvSTATE (next); 1393 TRANSFER_CHECK (*ta);
1022
1023 assert (ta->next->flags & CF_READY); 1394 assert (ta->next->flags & CF_READY);
1024 ta->next->flags &= ~CF_READY; 1395 ta->next->flags &= ~CF_READY;
1025} 1396 SvRV_set (coro_current, next_sv);
1026 1397
1398 LOCK;
1399 free_coro_mortal (aTHX);
1400 coro_mortal = prev_sv;
1401 UNLOCK;
1402}
1403
1027static void 1404static void
1028prepare_cede (struct transfer_args *ta) 1405prepare_cede (pTHX_ struct transfer_args *ta)
1029{ 1406{
1030 api_ready (coro_current); 1407 api_ready (coro_current);
1031 prepare_schedule (ta); 1408 prepare_schedule (aTHX_ ta);
1032} 1409}
1033 1410
1034static int 1411static int
1035prepare_cede_notself (struct transfer_args *ta) 1412prepare_cede_notself (pTHX_ struct transfer_args *ta)
1036{ 1413{
1037 if (coro_nready) 1414 if (coro_nready)
1038 { 1415 {
1039 SV *prev = SvRV (coro_current); 1416 SV *prev = SvRV (coro_current);
1040 prepare_schedule (ta); 1417 prepare_schedule (aTHX_ ta);
1041 api_ready (prev); 1418 api_ready (prev);
1042 return 1; 1419 return 1;
1043 } 1420 }
1044 else 1421 else
1045 return 0; 1422 return 0;
1046} 1423}
1047 1424
1048static void 1425static void
1049api_schedule (void) 1426api_schedule (void)
1050{ 1427{
1428 dTHX;
1051 struct transfer_args ta; 1429 struct transfer_args ta;
1052 1430
1053 prepare_schedule (&ta); 1431 prepare_schedule (aTHX_ &ta);
1054 TRANSFER (ta); 1432 TRANSFER (ta);
1055} 1433}
1056 1434
1057static int 1435static int
1058api_cede (void) 1436api_cede (void)
1059{ 1437{
1438 dTHX;
1060 struct transfer_args ta; 1439 struct transfer_args ta;
1061 1440
1062 prepare_cede (&ta); 1441 prepare_cede (aTHX_ &ta);
1063 1442
1064 if (ta.prev != ta.next) 1443 if (expect_true (ta.prev != ta.next))
1065 { 1444 {
1066 TRANSFER (ta); 1445 TRANSFER (ta);
1067 return 1; 1446 return 1;
1068 } 1447 }
1069 else 1448 else
… …
1071} 1450}
1072 1451
1073static int 1452static int
1074api_cede_notself (void) 1453api_cede_notself (void)
1075{ 1454{
1455 dTHX;
1076 struct transfer_args ta; 1456 struct transfer_args ta;
1077 1457
1078 if (prepare_cede_notself (&ta)) 1458 if (prepare_cede_notself (aTHX_ &ta))
1079 { 1459 {
1080 TRANSFER (ta); 1460 TRANSFER (ta);
1081 return 1; 1461 return 1;
1082 } 1462 }
1083 else 1463 else
1084 return 0; 1464 return 0;
1085} 1465}
1086 1466
1467static void
1468api_trace (SV *coro_sv, int flags)
1469{
1470 dTHX;
1471 struct coro *coro = SvSTATE (coro_sv);
1472
1473 if (flags & CC_TRACE)
1474 {
1475 if (!coro->cctx)
1476 coro->cctx = cctx_new ();
1477 else if (!(coro->cctx->flags & CC_TRACE))
1478 croak ("cannot enable tracing on coroutine with custom stack");
1479
1480 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1481 }
1482 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1483 {
1484 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1485
1486 if (coro->flags & CF_RUNNING)
1487 PL_runops = RUNOPS_DEFAULT;
1488 else
1489 coro->slot->runops = RUNOPS_DEFAULT;
1490 }
1491}
1492
1087MODULE = Coro::State PACKAGE = Coro::State 1493MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1088 1494
1089PROTOTYPES: DISABLE 1495PROTOTYPES: DISABLE
1090 1496
1091BOOT: 1497BOOT:
1092{ 1498{
1093#ifdef USE_ITHREADS 1499#ifdef USE_ITHREADS
1094 MUTEX_INIT (&coro_mutex); 1500 MUTEX_INIT (&coro_mutex);
1095#endif 1501#endif
1096 BOOT_PAGESIZE; 1502 BOOT_PAGESIZE;
1097 1503
1504 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1505 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1506
1507 hv_sig = coro_get_hv ("SIG", TRUE);
1508 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
1509 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
1510
1511 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1512 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1513
1098 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1514 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1099 1515
1516 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1517 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1100 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1518 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)); 1519 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1105 1520
1106 main_mainstack = PL_mainstack; 1521 main_mainstack = PL_mainstack;
1522 main_top_env = PL_top_env;
1523
1524 while (main_top_env->je_prev)
1525 main_top_env = main_top_env->je_prev;
1107 1526
1108 coroapi.ver = CORO_API_VERSION; 1527 coroapi.ver = CORO_API_VERSION;
1109 coroapi.transfer = api_transfer; 1528 coroapi.transfer = api_transfer;
1110 1529
1111 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1530 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
… …
1118 struct coro *coro; 1537 struct coro *coro;
1119 HV *hv; 1538 HV *hv;
1120 int i; 1539 int i;
1121 1540
1122 Newz (0, coro, 1, struct coro); 1541 Newz (0, coro, 1, struct coro);
1123 coro->args = newAV (); 1542 coro->args = newAV ();
1124 coro->save = CORO_SAVE_ALL;
1125 coro->flags = CF_NEW; 1543 coro->flags = CF_NEW;
1126 1544
1545 if (coro_first) coro_first->prev = coro;
1546 coro->next = coro_first;
1547 coro_first = coro;
1548
1127 hv = newHV (); 1549 coro->hv = hv = newHV ();
1128 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1550 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)); 1551 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1130 1552
1553 av_extend (coro->args, items - 1);
1131 for (i = 1; i < items; i++) 1554 for (i = 1; i < items; i++)
1132 av_push (coro->args, newSVsv (ST (i))); 1555 av_push (coro->args, newSVsv (ST (i)));
1133} 1556}
1134 OUTPUT: 1557 OUTPUT:
1135 RETVAL 1558 RETVAL
1136 1559
1137int 1560# these not obviously related functions are all rolled into the same xs
1138save (SV *coro, int new_save = -1) 1561# function to increase chances that they all will call transfer with the same
1139 CODE: 1562# stack offset
1140 RETVAL = api_save (coro, new_save);
1141 OUTPUT:
1142 RETVAL
1143
1144void 1563void
1145_set_stacklevel (...) 1564_set_stacklevel (...)
1146 ALIAS: 1565 ALIAS:
1147 Coro::State::transfer = 1 1566 Coro::State::transfer = 1
1148 Coro::schedule = 2 1567 Coro::schedule = 2
1149 Coro::cede = 3 1568 Coro::cede = 3
1150 Coro::cede_notself = 4 1569 Coro::cede_notself = 4
1570 Coro::Event::next = 5
1571 Coro::Event::next_cancel = 6
1151 CODE: 1572 PPCODE:
1152{ 1573{
1153 struct transfer_args ta; 1574 struct transfer_args ta;
1575 int repeat = 0;
1154 1576
1155 switch (ix) 1577 do
1156 { 1578 {
1579 switch (ix)
1580 {
1157 case 0: 1581 case 0:
1158 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1582 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1159 ta.next = 0; 1583 ta.next = 0;
1160 break; 1584 break;
1161 1585
1162 case 1: 1586 case 1:
1163 if (items != 2) 1587 if (items != 2)
1164 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1588 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1165 1589
1166 prepare_transfer (&ta, ST (0), ST (1)); 1590 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1167 break; 1591 break;
1168 1592
1169 case 2: 1593 case 2:
1170 prepare_schedule (&ta); 1594 prepare_schedule (aTHX_ &ta);
1171 break; 1595 break;
1172 1596
1173 case 3: 1597 case 3:
1174 prepare_cede (&ta); 1598 prepare_cede (aTHX_ &ta);
1175 break; 1599 break;
1176 1600
1177 case 4: 1601 case 4:
1178 if (!prepare_cede_notself (&ta)) 1602 if (!prepare_cede_notself (aTHX_ &ta))
1179 XSRETURN_EMPTY; 1603 XSRETURN_EMPTY;
1180 1604
1181 break; 1605 break;
1606
1607 case 5:
1608 case 6:
1609 if (items != 1)
1610 croak ("Coro::Event::next (watcher) expects one argument, not %d", items);
1611
1612 {
1613 SV *ev = coroapi.coro_event_next (ST (0), ix == 6, GIMME_V != G_VOID);
1614
1615 if (ev)
1616 {
1617 if (GIMME_V != G_VOID)
1618 {
1619 XPUSHs (ev);
1620 XSRETURN (1);
1621 }
1622 else
1623 XSRETURN_EMPTY;
1624 }
1625 }
1626
1627 prepare_schedule (aTHX_ &ta);
1628 repeat = 1;
1629 break;
1630 }
1631
1632 BARRIER;
1633 TRANSFER (ta);
1634 BARRIER;
1182 } 1635 }
1636 while (repeat);
1183 1637
1184 BARRIER; 1638 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1185 TRANSFER (ta); 1639 XSRETURN_YES;
1186} 1640}
1187 1641
1188void 1642bool
1189_clone_state_from (SV *dst, SV *src) 1643_destroy (SV *coro_sv)
1190 CODE: 1644 CODE:
1191{ 1645 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1192 struct coro *coro_src = SvSTATE (src); 1646 OUTPUT:
1193 1647 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 1648
1200void 1649void
1201_exit (code) 1650_exit (code)
1202 int code 1651 int code
1203 PROTOTYPE: $ 1652 PROTOTYPE: $
1204 CODE: 1653 CODE:
1205 _exit (code); 1654 _exit (code);
1206 1655
1207int 1656int
1657cctx_stacksize (int new_stacksize = 0)
1658 CODE:
1659 RETVAL = coro_stacksize;
1660 if (new_stacksize)
1661 coro_stacksize = new_stacksize;
1662 OUTPUT:
1663 RETVAL
1664
1665int
1208cctx_count () 1666cctx_count ()
1209 CODE: 1667 CODE:
1210 RETVAL = cctx_count; 1668 RETVAL = cctx_count;
1211 OUTPUT: 1669 OUTPUT:
1212 RETVAL 1670 RETVAL
… …
1216 CODE: 1674 CODE:
1217 RETVAL = cctx_idle; 1675 RETVAL = cctx_idle;
1218 OUTPUT: 1676 OUTPUT:
1219 RETVAL 1677 RETVAL
1220 1678
1679void
1680list ()
1681 PPCODE:
1682{
1683 struct coro *coro;
1684 for (coro = coro_first; coro; coro = coro->next)
1685 if (coro->hv)
1686 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1687}
1688
1689void
1690call (Coro::State coro, SV *coderef)
1691 ALIAS:
1692 eval = 1
1693 CODE:
1694{
1695 if (coro->mainstack)
1696 {
1697 struct coro temp;
1698
1699 if (!(coro->flags & CF_RUNNING))
1700 {
1701 save_perl (aTHX_ &temp);
1702 load_perl (aTHX_ coro);
1703 }
1704
1705 {
1706 dSP;
1707 ENTER;
1708 SAVETMPS;
1709 PUSHMARK (SP);
1710 PUTBACK;
1711
1712 if (ix)
1713 eval_sv (coderef, 0);
1714 else
1715 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1716
1717 SPAGAIN;
1718 FREETMPS;
1719 LEAVE;
1720 PUTBACK;
1721 }
1722
1723 if (!(coro->flags & CF_RUNNING))
1724 {
1725 save_perl (aTHX_ coro);
1726 load_perl (aTHX_ &temp);
1727 }
1728 }
1729}
1730
1731SV *
1732is_ready (Coro::State coro)
1733 PROTOTYPE: $
1734 ALIAS:
1735 is_ready = CF_READY
1736 is_running = CF_RUNNING
1737 is_new = CF_NEW
1738 is_destroyed = CF_DESTROYED
1739 CODE:
1740 RETVAL = boolSV (coro->flags & ix);
1741 OUTPUT:
1742 RETVAL
1743
1744void
1745api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1746
1747SV *
1748has_stack (Coro::State coro)
1749 PROTOTYPE: $
1750 CODE:
1751 RETVAL = boolSV (!!coro->cctx);
1752 OUTPUT:
1753 RETVAL
1754
1755int
1756is_traced (Coro::State coro)
1757 PROTOTYPE: $
1758 CODE:
1759 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1760 OUTPUT:
1761 RETVAL
1762
1763IV
1764rss (Coro::State coro)
1765 PROTOTYPE: $
1766 ALIAS:
1767 usecount = 1
1768 CODE:
1769 switch (ix)
1770 {
1771 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1772 case 1: RETVAL = coro->usecount; break;
1773 }
1774 OUTPUT:
1775 RETVAL
1776
1777
1221MODULE = Coro::State PACKAGE = Coro 1778MODULE = Coro::State PACKAGE = Coro
1222 1779
1223BOOT: 1780BOOT:
1224{ 1781{
1225 int i; 1782 int i;
1226 1783
1784 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1785 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1786 av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
1787
1788 coro_current = coro_get_sv ("Coro::current", FALSE);
1789 SvREADONLY_on (coro_current);
1790
1227 coro_stash = gv_stashpv ("Coro", TRUE); 1791 coro_stash = gv_stashpv ("Coro", TRUE);
1228 1792
1229 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1793 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1230 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1794 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1231 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1795 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1232 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1796 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1233 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1797 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1234 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1798 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1235 1799
1236 coro_current = get_sv ("Coro::current", FALSE);
1237 SvREADONLY_on (coro_current);
1238
1239 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1800 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1240 coro_ready[i] = newAV (); 1801 coro_ready[i] = newAV ();
1241 1802
1242 { 1803 {
1243 SV *sv = perl_get_sv("Coro::API", 1); 1804 SV *sv = perl_get_sv ("Coro::API", TRUE);
1805 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1244 1806
1245 coroapi.schedule = api_schedule; 1807 coroapi.schedule = api_schedule;
1246 coroapi.save = api_save;
1247 coroapi.cede = api_cede; 1808 coroapi.cede = api_cede;
1248 coroapi.cede_notself = api_cede_notself; 1809 coroapi.cede_notself = api_cede_notself;
1249 coroapi.ready = api_ready; 1810 coroapi.ready = api_ready;
1250 coroapi.is_ready = api_is_ready; 1811 coroapi.is_ready = api_is_ready;
1251 coroapi.nready = &coro_nready; 1812 coroapi.nready = &coro_nready;
… …
1292 CODE: 1853 CODE:
1293 RETVAL = boolSV (api_ready (self)); 1854 RETVAL = boolSV (api_ready (self));
1294 OUTPUT: 1855 OUTPUT:
1295 RETVAL 1856 RETVAL
1296 1857
1297SV *
1298is_ready (SV *self)
1299 PROTOTYPE: $
1300 CODE:
1301 RETVAL = boolSV (api_is_ready (self));
1302 OUTPUT:
1303 RETVAL
1304
1305int 1858int
1306nready (...) 1859nready (...)
1307 PROTOTYPE: 1860 PROTOTYPE:
1308 CODE: 1861 CODE:
1309 RETVAL = coro_nready; 1862 RETVAL = coro_nready;
1310 OUTPUT: 1863 OUTPUT:
1311 RETVAL 1864 RETVAL
1312 1865
1866void
1867throw (Coro::State self, SV *throw = &PL_sv_undef)
1868 PROTOTYPE: $;$
1869 CODE:
1870 SvREFCNT_dec (self->throw);
1871 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1872
1873# for async_pool speedup
1874void
1875_pool_1 (SV *cb)
1876 CODE:
1877{
1878 struct coro *coro = SvSTATE (coro_current);
1879 HV *hv = (HV *)SvRV (coro_current);
1880 AV *defav = GvAV (PL_defgv);
1881 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
1882 AV *invoke_av;
1883 int i, len;
1884
1885 if (!invoke)
1886 croak ("\3async_pool terminate\2\n");
1887
1888 SvREFCNT_dec (coro->saved_deffh);
1889 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1890
1891 hv_store (hv, "desc", sizeof ("desc") - 1,
1892 newSVpvn (strpair ("[async_pool]")), 0);
1893
1894 invoke_av = (AV *)SvRV (invoke);
1895 len = av_len (invoke_av);
1896
1897 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1898
1899 if (len > 0)
1900 {
1901 av_fill (defav, len - 1);
1902 for (i = 0; i < len; ++i)
1903 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1904 }
1905
1906 SvREFCNT_dec (invoke);
1907}
1908
1909void
1910_pool_2 (SV *cb)
1911 CODE:
1912{
1913 struct coro *coro = SvSTATE (coro_current);
1914
1915 sv_setsv (cb, &PL_sv_undef);
1916
1917 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1918 coro->saved_deffh = 0;
1919
1920 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1921 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1922 croak ("\3async_pool terminate\2\n");
1923
1924 av_clear (GvAV (PL_defgv));
1925 hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
1926 newSVpvn (strpair ("[async_pool idle]")), 0);
1927
1928 coro->prio = 0;
1929
1930 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1931 api_trace (coro_current, 0);
1932
1933 av_push (av_async_pool, newSVsv (coro_current));
1934}
1935
1936
1313MODULE = Coro::State PACKAGE = Coro::AIO 1937MODULE = Coro::State PACKAGE = Coro::AIO
1314 1938
1315SV * 1939SV *
1316_get_state () 1940_get_state ()
1317 CODE: 1941 CODE:

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