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Comparing Coro/Coro/State.xs (file contents):
Revision 1.204 by root, Mon Oct 8 03:03:39 2007 UTC vs.
Revision 1.280 by root, Sun Nov 16 09:43:18 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
15 25
16#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
17# include <unistd.h> 27# include <unistd.h>
18# include <sys/mman.h> 28# include <sys/mman.h>
19# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
36# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
37#endif 47#endif
38 48
39#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
40# include <valgrind/valgrind.h> 50# 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)
44#endif 51#endif
45 52
46/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
47#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
48 55
49#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
50 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
51 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
52 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
71# ifndef IS_PADCONST 78# ifndef IS_PADCONST
72# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
73# endif 80# endif
74#endif 81#endif
75 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
76/* 5.8.7 */ 101/* 5.8.7 */
77#ifndef SvRV_set 102#ifndef SvRV_set
78# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
79#endif 104#endif
80 105
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
89#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
90# undef CORO_STACKGUARD 107# undef CORO_STACKGUARD
91#endif 108#endif
92 109
93#ifndef CORO_STACKGUARD 110#ifndef CORO_STACKGUARD
… …
99# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
100#endif 117#endif
101 118
102/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
103 * portable way as possible. */ 120 * portable way as possible. */
104#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
105#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
106 126
107#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
108 128
109#if __GNUC__ >= 3 129#if __GNUC__ >= 3
110# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
111# define BARRIER __asm__ __volatile__ ("" : : : "memory")
112# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
113#else 133#else
114# define attribute(x) 134# define attribute(x)
115# define BARRIER
116# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
117#endif 137#endif
118 138
119#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
120#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
121 141
122#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
123 143
124#include "CoroAPI.h" 144#include "CoroAPI.h"
125 145
126#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
127static perl_mutex coro_mutex; 147# if CORO_PTHREAD
128# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
129# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
130#else
131# define LOCK (void)0
132# define UNLOCK (void)0
133#endif 149# endif
134 150#endif
135#define strpair(const) const, sizeof (const) - 1
136 151
137/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
138struct io_state 153struct io_state
139{ 154{
155 AV *res;
140 int errorno; 156 int errorno;
141 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
142 int laststatval; 158 int laststatval;
143 Stat_t statcache; 159 Stat_t statcache;
144}; 160};
145 161
162static double (*nvtime)(); /* so why doesn't it take void? */
163
164static U32 cctx_gen;
146static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
147static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
148static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
149static JMPENV *main_top_env; 168static JMPENV *main_top_env;
150static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
151static SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next;
152 172
153static GV *irsgv; /* $/ */ 173static GV *irsgv; /* $/ */
154static GV *stdoutgv; /* *STDOUT */ 174static GV *stdoutgv; /* *STDOUT */
155 175static SV *rv_diehook;
176static SV *rv_warnhook;
156static HV *hv_sig; /* %SIG */ 177static HV *hv_sig; /* %SIG */
157static SV *sv_diehook;
158static SV *sv_warnhook;
159 178
160/* async_pool helper stuff */ 179/* async_pool helper stuff */
161static SV *sv_pool_rss; 180static SV *sv_pool_rss;
162static SV *sv_pool_size; 181static SV *sv_pool_size;
163static AV *av_async_pool; 182static AV *av_async_pool;
183
184/* Coro::AnyEvent */
185static SV *sv_activity;
164 186
165static struct coro_cctx *cctx_first; 187static struct coro_cctx *cctx_first;
166static int cctx_count, cctx_idle; 188static int cctx_count, cctx_idle;
167 189
168enum { 190enum {
… …
173 CC_TRACE_LINE = 0x10, /* trace each statement */ 195 CC_TRACE_LINE = 0x10, /* trace each statement */
174 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 196 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
175}; 197};
176 198
177/* this is a structure representing a c-level coroutine */ 199/* this is a structure representing a c-level coroutine */
178typedef struct coro_cctx { 200typedef struct coro_cctx
201{
179 struct coro_cctx *next; 202 struct coro_cctx *next;
180 203
181 /* the stack */ 204 /* the stack */
182 void *sptr; 205 void *sptr;
183 size_t ssize; 206 size_t ssize;
… …
186 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 209 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 */ 210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
188 JMPENV *top_env; 211 JMPENV *top_env;
189 coro_context cctx; 212 coro_context cctx;
190 213
214 U32 gen;
191#if CORO_USE_VALGRIND 215#if CORO_USE_VALGRIND
192 int valgrind_id; 216 int valgrind_id;
193#endif 217#endif
194 unsigned char flags; 218 unsigned char flags;
195} coro_cctx; 219} coro_cctx;
… …
200 CF_NEW = 0x0004, /* has never been switched to */ 224 CF_NEW = 0x0004, /* has never been switched to */
201 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
202}; 226};
203 227
204/* the structure where most of the perl state is stored, overlaid on the cxstack */ 228/* the structure where most of the perl state is stored, overlaid on the cxstack */
205typedef struct { 229typedef struct
230{
206 SV *defsv; 231 SV *defsv;
207 AV *defav; 232 AV *defav;
208 SV *errsv; 233 SV *errsv;
209 SV *irsgv; 234 SV *irsgv;
210#define VAR(name,type) type name; 235#define VAR(name,type) type name;
… …
214 239
215#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
216 241
217/* this is a structure representing a perl-level coroutine */ 242/* this is a structure representing a perl-level coroutine */
218struct coro { 243struct coro {
219 /* the c coroutine allocated to this perl coroutine, if any */ 244 /* the C coroutine allocated to this perl coroutine, if any */
220 coro_cctx *cctx; 245 coro_cctx *cctx;
221 246
222 /* process data */ 247 /* process data */
248 struct CoroSLF slf_frame; /* saved slf frame */
223 AV *mainstack; 249 AV *mainstack;
224 perl_slots *slot; /* basically the saved sp */ 250 perl_slots *slot; /* basically the saved sp */
225 251
226 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
227 int refcnt; /* coroutines are refcounted, yes */ 253 int refcnt; /* coroutines are refcounted, yes */
228 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
229 HV *hv; /* the perl hash associated with this coro, if any */ 255 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
230 257
231 /* statistics */ 258 /* statistics */
232 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
233 260
234 /* coro process data */ 261 /* coro process data */
… …
242 struct coro *next, *prev; 269 struct coro *next, *prev;
243}; 270};
244 271
245typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
246typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
274
275static struct CoroSLF slf_frame; /* the current slf frame */
247 276
248/** Coro ********************************************************************/ 277/** Coro ********************************************************************/
249 278
250#define PRIO_MAX 3 279#define PRIO_MAX 3
251#define PRIO_HIGH 1 280#define PRIO_HIGH 1
… …
254#define PRIO_IDLE -3 283#define PRIO_IDLE -3
255#define PRIO_MIN -4 284#define PRIO_MIN -4
256 285
257/* for Coro.pm */ 286/* for Coro.pm */
258static SV *coro_current; 287static SV *coro_current;
288static SV *coro_readyhook;
259static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
260static int coro_nready;
261static struct coro *coro_first; 290static struct coro *coro_first;
291#define coro_nready coroapi.nready
262 292
263/** lowlevel stuff **********************************************************/ 293/** lowlevel stuff **********************************************************/
264 294
265static SV * 295static SV *
266coro_get_sv (const char *name, int create) 296coro_get_sv (pTHX_ const char *name, int create)
267{ 297{
268#if PERL_VERSION_ATLEAST (5,9,0) 298#if PERL_VERSION_ATLEAST (5,10,0)
269 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 299 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
270 get_sv (name, create); 300 get_sv (name, create);
271#endif 301#endif
272 return get_sv (name, create); 302 return get_sv (name, create);
273} 303}
274 304
275static AV * 305static AV *
276coro_get_av (const char *name, int create) 306coro_get_av (pTHX_ const char *name, int create)
277{ 307{
278#if PERL_VERSION_ATLEAST (5,9,0) 308#if PERL_VERSION_ATLEAST (5,10,0)
279 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 309 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
280 get_av (name, create); 310 get_av (name, create);
281#endif 311#endif
282 return get_av (name, create); 312 return get_av (name, create);
283} 313}
284 314
285static HV * 315static HV *
286coro_get_hv (const char *name, int create) 316coro_get_hv (pTHX_ const char *name, int create)
287{ 317{
288#if PERL_VERSION_ATLEAST (5,9,0) 318#if PERL_VERSION_ATLEAST (5,10,0)
289 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
290 get_hv (name, create); 320 get_hv (name, create);
291#endif 321#endif
292 return get_hv (name, create); 322 return get_hv (name, create);
293} 323}
… …
298 AV *padlist = CvPADLIST (cv); 328 AV *padlist = CvPADLIST (cv);
299 AV *newpadlist, *newpad; 329 AV *newpadlist, *newpad;
300 330
301 newpadlist = newAV (); 331 newpadlist = newAV ();
302 AvREAL_off (newpadlist); 332 AvREAL_off (newpadlist);
303#if PERL_VERSION_ATLEAST (5,9,0) 333#if PERL_VERSION_ATLEAST (5,10,0)
304 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 334 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
305#else 335#else
306 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
307#endif 337#endif
308 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
309 --AvFILLp (padlist); 339 --AvFILLp (padlist);
310 340
311 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
312 av_store (newpadlist, 1, (SV *)newpad); 342 av_store (newpadlist, 1, (SV *)newpad);
313 343
314 return newpadlist; 344 return newpadlist;
315} 345}
316 346
… …
346 376
347 /* casting is fun. */ 377 /* casting is fun. */
348 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
349 free_padlist (aTHX_ padlist); 379 free_padlist (aTHX_ padlist);
350 380
351 SvREFCNT_dec (av); 381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
352 382
353 return 0; 383 return 0;
354} 384}
355 385
356#define PERL_MAGIC_coro PERL_MAGIC_ext 386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
357 388
358static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 389static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0,
391 coro_cv_free
392};
359 393
360#define CORO_MAGIC(cv) \ 394#define CORO_MAGIC(sv, type) \
361 SvMAGIC (cv) \ 395 SvMAGIC (sv) \
362 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 396 ? SvMAGIC (sv)->mg_type == type \
363 ? SvMAGIC (cv) \ 397 ? SvMAGIC (sv) \
364 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 398 : mg_find (sv, type) \
365 : 0 399 : 0
366 400
367static struct coro * 401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
368SvSTATE_ (pTHX_ SV *coro) 405SvSTATE_ (pTHX_ SV *coro)
369{ 406{
370 HV *stash; 407 HV *stash;
371 MAGIC *mg; 408 MAGIC *mg;
372 409
… …
382 /* very slow, but rare, check */ 419 /* very slow, but rare, check */
383 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
384 croak ("Coro::State object required"); 421 croak ("Coro::State object required");
385 } 422 }
386 423
387 mg = CORO_MAGIC (coro); 424 mg = CORO_MAGIC_state (coro);
388 return (struct coro *)mg->mg_ptr; 425 return (struct coro *)mg->mg_ptr;
389} 426}
390 427
391#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
392 429
393/* the next two functions merely cache the padlists */ 430/* the next two functions merely cache the padlists */
394static void 431static void
395get_padlist (pTHX_ CV *cv) 432get_padlist (pTHX_ CV *cv)
396{ 433{
397 MAGIC *mg = CORO_MAGIC (cv); 434 MAGIC *mg = CORO_MAGIC_cv (cv);
398 AV *av; 435 AV *av;
399 436
400 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 437 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
401 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 438 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
402 else 439 else
403 { 440 {
404#if CORO_PREFER_PERL_FUNCTIONS 441#if CORO_PREFER_PERL_FUNCTIONS
405 /* this is probably cleaner, but also slower? */ 442 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */
406 CV *cp = Perl_cv_clone (cv); 444 CV *cp = Perl_cv_clone (cv);
407 CvPADLIST (cv) = CvPADLIST (cp); 445 CvPADLIST (cv) = CvPADLIST (cp);
408 CvPADLIST (cp) = 0; 446 CvPADLIST (cp) = 0;
409 SvREFCNT_dec (cp); 447 SvREFCNT_dec (cp);
410#else 448#else
… …
414} 452}
415 453
416static void 454static void
417put_padlist (pTHX_ CV *cv) 455put_padlist (pTHX_ CV *cv)
418{ 456{
419 MAGIC *mg = CORO_MAGIC (cv); 457 MAGIC *mg = CORO_MAGIC_cv (cv);
420 AV *av; 458 AV *av;
421 459
422 if (expect_false (!mg)) 460 if (expect_false (!mg))
423 { 461 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
424 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
425 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
426 mg->mg_virtual = &vtbl_coro;
427 mg->mg_obj = (SV *)newAV ();
428 }
429 462
430 av = (AV *)mg->mg_obj; 463 av = (AV *)mg->mg_obj;
431 464
432 if (expect_false (AvFILLp (av) >= AvMAX (av))) 465 if (expect_false (AvFILLp (av) >= AvMAX (av)))
433 av_extend (av, AvMAX (av) + 1); 466 av_extend (av, AvMAX (av) + 1);
… …
451 GvSV (irsgv) = slot->irsgv; 484 GvSV (irsgv) = slot->irsgv;
452 485
453 #define VAR(name,type) PL_ ## name = slot->name; 486 #define VAR(name,type) PL_ ## name = slot->name;
454 # include "state.h" 487 # include "state.h"
455 #undef VAR 488 #undef VAR
456
457 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
458 /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
459 489
460 { 490 {
461 dSP; 491 dSP;
462 492
463 CV *cv; 493 CV *cv;
… …
470 CvPADLIST (cv) = (AV *)POPs; 500 CvPADLIST (cv) = (AV *)POPs;
471 } 501 }
472 502
473 PUTBACK; 503 PUTBACK;
474 } 504 }
505
506 slf_frame = c->slf_frame;
475} 507}
476 508
477static void 509static void
478save_perl (pTHX_ Coro__State c) 510save_perl (pTHX_ Coro__State c)
479{ 511{
512 c->slf_frame = slf_frame;
513
480 { 514 {
481 dSP; 515 dSP;
482 I32 cxix = cxstack_ix; 516 I32 cxix = cxstack_ix;
483 PERL_CONTEXT *ccstk = cxstack; 517 PERL_CONTEXT *ccstk = cxstack;
484 PERL_SI *top_si = PL_curstackinfo; 518 PERL_SI *top_si = PL_curstackinfo;
… …
502 536
503 if (expect_true (CvDEPTH (cv))) 537 if (expect_true (CvDEPTH (cv)))
504 { 538 {
505 EXTEND (SP, 3); 539 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 540 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 541 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 542 PUSHs ((SV *)cv);
509 543
510 CvDEPTH (cv) = 0; 544 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 545 get_padlist (aTHX_ cv);
512 } 546 }
… …
551 #undef VAR 585 #undef VAR
552 } 586 }
553} 587}
554 588
555/* 589/*
556 * allocate various perl stacks. This is an exact copy 590 * allocate various perl stacks. This is almost an exact copy
557 * of perl.c:init_stacks, except that it uses less memory 591 * of perl.c:init_stacks, except that it uses less memory
558 * on the (sometimes correct) assumption that coroutines do 592 * on the (sometimes correct) assumption that coroutines do
559 * not usually need a lot of stackspace. 593 * not usually need a lot of stackspace.
560 */ 594 */
561#if CORO_PREFER_PERL_FUNCTIONS 595#if CORO_PREFER_PERL_FUNCTIONS
… …
592 626
593 New(54,PL_savestack,24,ANY); 627 New(54,PL_savestack,24,ANY);
594 PL_savestack_ix = 0; 628 PL_savestack_ix = 0;
595 PL_savestack_max = 24; 629 PL_savestack_max = 24;
596 630
597#if !PERL_VERSION_ATLEAST (5,9,0) 631#if !PERL_VERSION_ATLEAST (5,10,0)
598 New(54,PL_retstack,4,OP*); 632 New(54,PL_retstack,4,OP*);
599 PL_retstack_ix = 0; 633 PL_retstack_ix = 0;
600 PL_retstack_max = 4; 634 PL_retstack_max = 4;
601#endif 635#endif
602} 636}
… …
604 638
605/* 639/*
606 * destroy the stacks, the callchain etc... 640 * destroy the stacks, the callchain etc...
607 */ 641 */
608static void 642static void
609coro_destroy_stacks (pTHX) 643coro_destruct_stacks (pTHX)
610{ 644{
611 while (PL_curstackinfo->si_next) 645 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 646 PL_curstackinfo = PL_curstackinfo->si_next;
613 647
614 while (PL_curstackinfo) 648 while (PL_curstackinfo)
… …
625 659
626 Safefree (PL_tmps_stack); 660 Safefree (PL_tmps_stack);
627 Safefree (PL_markstack); 661 Safefree (PL_markstack);
628 Safefree (PL_scopestack); 662 Safefree (PL_scopestack);
629 Safefree (PL_savestack); 663 Safefree (PL_savestack);
630#if !PERL_VERSION_ATLEAST (5,9,0) 664#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 665 Safefree (PL_retstack);
632#endif 666#endif
633} 667}
634 668
635static size_t 669static size_t
… …
651 #undef VAR 685 #undef VAR
652 } 686 }
653 else 687 else
654 slot = coro->slot; 688 slot = coro->slot;
655 689
690 if (slot)
691 {
656 rss += sizeof (slot->curstackinfo); 692 rss += sizeof (slot->curstackinfo);
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 693 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 694 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659 rss += slot->tmps_max * sizeof (SV *); 695 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 696 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32); 697 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY); 698 rss += slot->savestack_max * sizeof (ANY);
663 699
664#if !PERL_VERSION_ATLEAST (5,9,0) 700#if !PERL_VERSION_ATLEAST (5,10,0)
665 rss += slot->retstack_max * sizeof (OP *); 701 rss += slot->retstack_max * sizeof (OP *);
666#endif 702#endif
703 }
667 } 704 }
668 705
669 return rss; 706 return rss;
670} 707}
671 708
672/** coroutine stack handling ************************************************/ 709/** coroutine stack handling ************************************************/
710
711static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
712static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
713static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
714
715/* apparently < 5.8.8 */
716#ifndef MgPV_nolen_const
717#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
718 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
719 (const char*)(mg)->mg_ptr)
720#endif
721
722/*
723 * This overrides the default magic get method of %SIG elements.
724 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
725 * and instead of tryign to save and restore the hash elements, we just provide
726 * readback here.
727 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
728 * not expecting this to actually change the hook. This is a potential problem
729 * when a schedule happens then, but we ignore this.
730 */
731static int
732coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
733{
734 const char *s = MgPV_nolen_const (mg);
735
736 if (*s == '_')
737 {
738 SV **svp = 0;
739
740 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
741 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
742
743 if (svp)
744 {
745 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
746 return 0;
747 }
748 }
749
750 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
751}
752
753static int
754coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
755{
756 const char *s = MgPV_nolen_const (mg);
757
758 if (*s == '_')
759 {
760 SV **svp = 0;
761
762 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
763 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
764
765 if (svp)
766 {
767 SV *old = *svp;
768 *svp = 0;
769 SvREFCNT_dec (old);
770 return 0;
771 }
772 }
773
774 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
775}
776
777static int
778coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
779{
780 const char *s = MgPV_nolen_const (mg);
781
782 if (*s == '_')
783 {
784 SV **svp = 0;
785
786 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
787 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
788
789 if (svp)
790 {
791 SV *old = *svp;
792 *svp = newSVsv (sv);
793 SvREFCNT_dec (old);
794 return 0;
795 }
796 }
797
798 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
799}
800
801static void
802prepare_nop (pTHX_ struct coro_transfer_args *ta)
803{
804 /* kind of mega-hacky, but works */
805 ta->next = ta->prev = (struct coro *)ta;
806}
807
808static int
809slf_check_nop (pTHX_ struct CoroSLF *frame)
810{
811 return 0;
812}
673 813
674static void 814static void
675coro_setup (pTHX_ struct coro *coro) 815coro_setup (pTHX_ struct coro *coro)
676{ 816{
677 /* 817 /*
… …
686 PL_curpm = 0; 826 PL_curpm = 0;
687 PL_curpad = 0; 827 PL_curpad = 0;
688 PL_localizing = 0; 828 PL_localizing = 0;
689 PL_dirty = 0; 829 PL_dirty = 0;
690 PL_restartop = 0; 830 PL_restartop = 0;
691 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); 831#if PERL_VERSION_ATLEAST (5,10,0)
692 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); 832 PL_parser = 0;
833#endif
834
835 /* recreate the die/warn hooks */
836 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
837 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
693 838
694 GvSV (PL_defgv) = newSV (0); 839 GvSV (PL_defgv) = newSV (0);
695 GvAV (PL_defgv) = coro->args; coro->args = 0; 840 GvAV (PL_defgv) = coro->args; coro->args = 0;
696 GvSV (PL_errgv) = newSV (0); 841 GvSV (PL_errgv) = newSV (0);
697 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 842 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
698 PL_rs = newSVsv (GvSV (irsgv)); 843 PL_rs = newSVsv (GvSV (irsgv));
699 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 844 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
700 845
701 { 846 {
702 dSP; 847 dSP;
703 LOGOP myop; 848 UNOP myop;
704 849
705 Zero (&myop, 1, LOGOP); 850 Zero (&myop, 1, UNOP);
706 myop.op_next = Nullop; 851 myop.op_next = Nullop;
707 myop.op_flags = OPf_WANT_VOID; 852 myop.op_flags = OPf_WANT_VOID;
708 853
709 PUSHMARK (SP); 854 PUSHMARK (SP);
710 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 855 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
712 PL_op = (OP *)&myop; 857 PL_op = (OP *)&myop;
713 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 858 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
714 SPAGAIN; 859 SPAGAIN;
715 } 860 }
716 861
717 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ 862 /* this newly created coroutine might be run on an existing cctx which most
863 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
864 */
865 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
866 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
718} 867}
719 868
720static void 869static void
721coro_destroy (pTHX_ struct coro *coro) 870coro_destruct (pTHX_ struct coro *coro)
722{ 871{
723 if (!IN_DESTRUCT) 872 if (!IN_DESTRUCT)
724 { 873 {
725 /* restore all saved variables and stuff */ 874 /* restore all saved variables and stuff */
726 LEAVE_SCOPE (0); 875 LEAVE_SCOPE (0);
… …
748 SvREFCNT_dec (PL_warnhook); 897 SvREFCNT_dec (PL_warnhook);
749 898
750 SvREFCNT_dec (coro->saved_deffh); 899 SvREFCNT_dec (coro->saved_deffh);
751 SvREFCNT_dec (coro->throw); 900 SvREFCNT_dec (coro->throw);
752 901
753 coro_destroy_stacks (aTHX); 902 coro_destruct_stacks (aTHX);
754} 903}
755 904
756static void 905INLINE void
757free_coro_mortal (pTHX) 906free_coro_mortal (pTHX)
758{ 907{
759 if (expect_true (coro_mortal)) 908 if (expect_true (coro_mortal))
760 { 909 {
761 SvREFCNT_dec (coro_mortal); 910 SvREFCNT_dec (coro_mortal);
… …
795 : cx->blk_gimme == G_SCALAR ? bot + 1 944 : cx->blk_gimme == G_SCALAR ? bot + 1
796 : bot; 945 : bot;
797 946
798 av_extend (av, top - bot); 947 av_extend (av, top - bot);
799 while (bot < top) 948 while (bot < top)
800 av_push (av, SvREFCNT_inc (*bot++)); 949 av_push (av, SvREFCNT_inc_NN (*bot++));
801 950
802 PL_runops = RUNOPS_DEFAULT; 951 PL_runops = RUNOPS_DEFAULT;
803 ENTER; 952 ENTER;
804 SAVETMPS; 953 SAVETMPS;
805 EXTEND (SP, 3); 954 EXTEND (SP, 3);
806 PUSHMARK (SP); 955 PUSHMARK (SP);
807 PUSHs (&PL_sv_no); 956 PUSHs (&PL_sv_no);
808 PUSHs (fullname); 957 PUSHs (fullname);
809 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 958 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
810 PUTBACK; 959 PUTBACK;
811 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 960 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
812 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 961 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
813 SPAGAIN; 962 SPAGAIN;
814 FREETMPS; 963 FREETMPS;
815 LEAVE; 964 LEAVE;
816 PL_runops = runops_trace; 965 PL_runops = runops_trace;
… …
843 SAVETMPS; 992 SAVETMPS;
844 EXTEND (SP, 3); 993 EXTEND (SP, 3);
845 PUSHMARK (SP); 994 PUSHMARK (SP);
846 PUSHs (&PL_sv_yes); 995 PUSHs (&PL_sv_yes);
847 PUSHs (fullname); 996 PUSHs (fullname);
848 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 997 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
849 PUTBACK; 998 PUTBACK;
850 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 999 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
851 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1000 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
852 SPAGAIN; 1001 SPAGAIN;
853 FREETMPS; 1002 FREETMPS;
854 LEAVE; 1003 LEAVE;
855 PL_runops = runops_trace; 1004 PL_runops = runops_trace;
… …
869 PL_runops = RUNOPS_DEFAULT; 1018 PL_runops = RUNOPS_DEFAULT;
870 PUSHMARK (SP); 1019 PUSHMARK (SP);
871 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1020 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
872 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1021 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
873 PUTBACK; 1022 PUTBACK;
874 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); 1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
875 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
876 SPAGAIN; 1025 SPAGAIN;
877 FREETMPS; 1026 FREETMPS;
878 LEAVE; 1027 LEAVE;
879 PL_runops = runops_trace; 1028 PL_runops = runops_trace;
… …
885 1034
886 TAINT_NOT; 1035 TAINT_NOT;
887 return 0; 1036 return 0;
888} 1037}
889 1038
1039static void
1040prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1041{
1042 ta->prev = (struct coro *)cctx;
1043 ta->next = 0;
1044}
1045
890/* inject a fake call to Coro::State::_cctx_init into the execution */ 1046/* inject a fake call to Coro::State::_cctx_init into the execution */
891/* _cctx_init should be careful, as it could be called at almost any time */ 1047/* _cctx_init should be careful, as it could be called at almost any time */
892/* during execution of a perl program */ 1048/* during execution of a perl program */
1049/* also initialises PL_top_env */
893static void NOINLINE 1050static void NOINLINE
894cctx_prepare (pTHX_ coro_cctx *cctx) 1051cctx_prepare (pTHX_ coro_cctx *cctx)
895{ 1052{
896 dSP; 1053 dSP;
897 LOGOP myop; 1054 UNOP myop;
898 1055
899 PL_top_env = &PL_start_env; 1056 PL_top_env = &PL_start_env;
900 1057
901 if (cctx->flags & CC_TRACE) 1058 if (cctx->flags & CC_TRACE)
902 PL_runops = runops_trace; 1059 PL_runops = runops_trace;
903 1060
904 Zero (&myop, 1, LOGOP); 1061 Zero (&myop, 1, UNOP);
905 myop.op_next = PL_op; 1062 myop.op_next = PL_op;
906 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1063 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
907 1064
908 PUSHMARK (SP); 1065 PUSHMARK (SP);
909 EXTEND (SP, 2); 1066 EXTEND (SP, 2);
910 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1067 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
911 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1068 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
912 PUTBACK; 1069 PUTBACK;
913 PL_op = (OP *)&myop; 1070 PL_op = (OP *)&myop;
914 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1071 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
915 SPAGAIN; 1072 SPAGAIN;
916} 1073}
917 1074
1075/* the tail of transfer: execute stuff we can only do after a transfer */
1076INLINE void
1077transfer_tail (pTHX)
1078{
1079 struct coro *next = (struct coro *)transfer_next;
1080 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1081 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1082
1083 free_coro_mortal (aTHX);
1084
1085 if (expect_false (next->throw))
1086 {
1087 SV *exception = sv_2mortal (next->throw);
1088
1089 next->throw = 0;
1090 sv_setsv (ERRSV, exception);
1091 croak (0);
1092 }
1093}
1094
918/* 1095/*
919 * this is a _very_ stripped down perl interpreter ;) 1096 * this is a _very_ stripped down perl interpreter ;)
920 */ 1097 */
921static void 1098static void
922cctx_run (void *arg) 1099cctx_run (void *arg)
923{ 1100{
1101#ifdef USE_ITHREADS
1102# if CORO_PTHREAD
1103 PERL_SET_CONTEXT (coro_thx);
1104# endif
1105#endif
1106 {
924 dTHX; 1107 dTHX;
925 1108
926 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1109 /* normally we would need to skip the entersub here */
927 UNLOCK; 1110 /* not doing so will re-execute it, which is exactly what we want */
928
929 /* we now skip the entersub that lead to transfer() */
930 PL_op = PL_op->op_next; 1111 /* PL_nop = PL_nop->op_next */
931 1112
932 /* inject a fake subroutine call to cctx_init */ 1113 /* inject a fake subroutine call to cctx_init */
933 cctx_prepare (aTHX_ (coro_cctx *)arg); 1114 cctx_prepare (aTHX_ (coro_cctx *)arg);
934 1115
1116 /* cctx_run is the alternative tail of transfer() */
1117 /* TODO: throwing an exception here might be deadly, VERIFY */
1118 transfer_tail (aTHX);
1119
935 /* somebody or something will hit me for both perl_run and PL_restartop */ 1120 /* somebody or something will hit me for both perl_run and PL_restartop */
936 PL_restartop = PL_op; 1121 PL_restartop = PL_op;
937 perl_run (PL_curinterp); 1122 perl_run (PL_curinterp);
938 1123
939 /* 1124 /*
940 * If perl-run returns we assume exit() was being called or the coro 1125 * If perl-run returns we assume exit() was being called or the coro
941 * fell off the end, which seems to be the only valid (non-bug) 1126 * fell off the end, which seems to be the only valid (non-bug)
942 * reason for perl_run to return. We try to exit by jumping to the 1127 * reason for perl_run to return. We try to exit by jumping to the
943 * bootstrap-time "top" top_env, as we cannot restore the "main" 1128 * bootstrap-time "top" top_env, as we cannot restore the "main"
944 * coroutine as Coro has no such concept 1129 * coroutine as Coro has no such concept
945 */ 1130 */
946 PL_top_env = main_top_env; 1131 PL_top_env = main_top_env;
947 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1132 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1133 }
948} 1134}
949 1135
950static coro_cctx * 1136static coro_cctx *
951cctx_new () 1137cctx_new ()
952{ 1138{
953 coro_cctx *cctx; 1139 coro_cctx *cctx;
1140
1141 ++cctx_count;
1142 New (0, cctx, 1, coro_cctx);
1143
1144 cctx->gen = cctx_gen;
1145 cctx->flags = 0;
1146 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1147
1148 return cctx;
1149}
1150
1151/* create a new cctx only suitable as source */
1152static coro_cctx *
1153cctx_new_empty ()
1154{
1155 coro_cctx *cctx = cctx_new ();
1156
1157 cctx->sptr = 0;
1158 coro_create (&cctx->cctx, 0, 0, 0, 0);
1159
1160 return cctx;
1161}
1162
1163/* create a new cctx suitable as destination/running a perl interpreter */
1164static coro_cctx *
1165cctx_new_run ()
1166{
1167 coro_cctx *cctx = cctx_new ();
954 void *stack_start; 1168 void *stack_start;
955 size_t stack_size; 1169 size_t stack_size;
956 1170
957 ++cctx_count;
958
959 Newz (0, cctx, 1, coro_cctx);
960
961#if HAVE_MMAP 1171#if HAVE_MMAP
962 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1172 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
963 /* mmap supposedly does allocate-on-write for us */ 1173 /* mmap supposedly does allocate-on-write for us */
964 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1174 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
965 1175
966 if (cctx->sptr != (void *)-1) 1176 if (cctx->sptr != (void *)-1)
967 { 1177 {
968# if CORO_STACKGUARD 1178 #if CORO_STACKGUARD
969 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1179 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
970# endif 1180 #endif
971 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1181 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
972 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1182 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
973 cctx->flags |= CC_MAPPED; 1183 cctx->flags |= CC_MAPPED;
974 } 1184 }
975 else 1185 else
976#endif 1186#endif
977 { 1187 {
978 cctx->ssize = coro_stacksize * (long)sizeof (long); 1188 cctx->ssize = cctx_stacksize * (long)sizeof (long);
979 New (0, cctx->sptr, coro_stacksize, long); 1189 New (0, cctx->sptr, cctx_stacksize, long);
980 1190
981 if (!cctx->sptr) 1191 if (!cctx->sptr)
982 { 1192 {
983 perror ("FATAL: unable to allocate stack for coroutine"); 1193 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
984 _exit (EXIT_FAILURE); 1194 _exit (EXIT_FAILURE);
985 } 1195 }
986 1196
987 stack_start = cctx->sptr; 1197 stack_start = cctx->sptr;
988 stack_size = cctx->ssize; 1198 stack_size = cctx->ssize;
989 } 1199 }
990 1200
991 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1201 #if CORO_USE_VALGRIND
1202 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1203 #endif
1204
992 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1205 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
993 1206
994 return cctx; 1207 return cctx;
995} 1208}
996 1209
… …
999{ 1212{
1000 if (!cctx) 1213 if (!cctx)
1001 return; 1214 return;
1002 1215
1003 --cctx_count; 1216 --cctx_count;
1217 coro_destroy (&cctx->cctx);
1004 1218
1219 /* coro_transfer creates new, empty cctx's */
1220 if (cctx->sptr)
1221 {
1005#if CORO_USE_VALGRIND 1222 #if CORO_USE_VALGRIND
1006 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1223 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1007#endif 1224 #endif
1008 1225
1009#if HAVE_MMAP 1226#if HAVE_MMAP
1010 if (cctx->flags & CC_MAPPED) 1227 if (cctx->flags & CC_MAPPED)
1011 munmap (cctx->sptr, cctx->ssize); 1228 munmap (cctx->sptr, cctx->ssize);
1012 else 1229 else
1013#endif 1230#endif
1014 Safefree (cctx->sptr); 1231 Safefree (cctx->sptr);
1232 }
1015 1233
1016 Safefree (cctx); 1234 Safefree (cctx);
1017} 1235}
1018 1236
1019/* wether this cctx should be destructed */ 1237/* wether this cctx should be destructed */
1020#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1238#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1021 1239
1022static coro_cctx * 1240static coro_cctx *
1023cctx_get (pTHX) 1241cctx_get (pTHX)
1024{ 1242{
1025 while (expect_true (cctx_first)) 1243 while (expect_true (cctx_first))
… …
1032 return cctx; 1250 return cctx;
1033 1251
1034 cctx_destroy (cctx); 1252 cctx_destroy (cctx);
1035 } 1253 }
1036 1254
1037 return cctx_new (); 1255 return cctx_new_run ();
1038} 1256}
1039 1257
1040static void 1258static void
1041cctx_put (coro_cctx *cctx) 1259cctx_put (coro_cctx *cctx)
1042{ 1260{
1261 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1262
1043 /* free another cctx if overlimit */ 1263 /* free another cctx if overlimit */
1044 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1264 if (expect_false (cctx_idle >= cctx_max_idle))
1045 { 1265 {
1046 coro_cctx *first = cctx_first; 1266 coro_cctx *first = cctx_first;
1047 cctx_first = first->next; 1267 cctx_first = first->next;
1048 --cctx_idle; 1268 --cctx_idle;
1049 1269
… …
1061transfer_check (pTHX_ struct coro *prev, struct coro *next) 1281transfer_check (pTHX_ struct coro *prev, struct coro *next)
1062{ 1282{
1063 if (expect_true (prev != next)) 1283 if (expect_true (prev != next))
1064 { 1284 {
1065 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1285 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"); 1286 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1067 1287
1068 if (expect_false (next->flags & CF_RUNNING)) 1288 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"); 1289 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1070 1290
1071 if (expect_false (next->flags & CF_DESTROYED)) 1291 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"); 1292 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1073 1293
1074 if (
1075#if PERL_VERSION_ATLEAST (5,9,0) 1294#if !PERL_VERSION_ATLEAST (5,10,0)
1076 expect_false (PL_parser)
1077#else
1078 expect_false (PL_lex_state != LEX_NOTPARSING) 1295 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1079#endif
1080 )
1081 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1296 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1297#endif
1082 } 1298 }
1083} 1299}
1084 1300
1085/* always use the TRANSFER macro */ 1301/* always use the TRANSFER macro */
1086static void NOINLINE 1302static void NOINLINE
1087transfer (pTHX_ struct coro *prev, struct coro *next) 1303transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1088{ 1304{
1089 dSTACKLEVEL; 1305 dSTACKLEVEL;
1090 1306
1091 /* sometimes transfer is only called to set idle_sp */ 1307 /* sometimes transfer is only called to set idle_sp */
1092 if (expect_false (!next)) 1308 if (expect_false (!next))
1093 { 1309 {
1094 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1310 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1095 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1311 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1096 } 1312 }
1097 else if (expect_true (prev != next)) 1313 else if (expect_true (prev != next))
1098 { 1314 {
1099 coro_cctx *prev__cctx; 1315 coro_cctx *prev__cctx;
1100 1316
1101 if (expect_false (prev->flags & CF_NEW)) 1317 if (expect_false (prev->flags & CF_NEW))
1102 { 1318 {
1103 /* create a new empty context */ 1319 /* create a new empty/source context */
1104 Newz (0, prev->cctx, 1, coro_cctx); 1320 prev->cctx = cctx_new_empty ();
1105 prev->flags &= ~CF_NEW; 1321 prev->flags &= ~CF_NEW;
1106 prev->flags |= CF_RUNNING; 1322 prev->flags |= CF_RUNNING;
1107 } 1323 }
1108 1324
1109 prev->flags &= ~CF_RUNNING; 1325 prev->flags &= ~CF_RUNNING;
1110 next->flags |= CF_RUNNING; 1326 next->flags |= CF_RUNNING;
1111 1327
1112 LOCK; 1328 /* first get rid of the old state */
1329 save_perl (aTHX_ prev);
1113 1330
1114 if (expect_false (next->flags & CF_NEW)) 1331 if (expect_false (next->flags & CF_NEW))
1115 { 1332 {
1116 /* need to start coroutine */ 1333 /* need to start coroutine */
1117 next->flags &= ~CF_NEW; 1334 next->flags &= ~CF_NEW;
1118 /* first get rid of the old state */
1119 save_perl (aTHX_ prev);
1120 /* setup coroutine call */ 1335 /* setup coroutine call */
1121 coro_setup (aTHX_ next); 1336 coro_setup (aTHX_ next);
1122 } 1337 }
1123 else 1338 else
1339 load_perl (aTHX_ next);
1340
1341 prev__cctx = prev->cctx;
1342
1343 /* possibly untie and reuse the cctx */
1344 if (expect_true (
1345 prev__cctx->idle_sp == (void *)stacklevel
1346 && !(prev__cctx->flags & CC_TRACE)
1347 && !force_cctx
1348 ))
1124 { 1349 {
1125 /* coroutine already started */
1126 save_perl (aTHX_ prev);
1127 load_perl (aTHX_ next);
1128 }
1129
1130 prev__cctx = prev->cctx;
1131
1132 /* possibly "free" the cctx */
1133 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
1134 {
1135 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1350 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1136 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1351 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1137 1352
1138 prev->cctx = 0; 1353 prev->cctx = 0;
1139 1354
1140 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1355 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1141 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1356 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1148 1363
1149 ++next->usecount; 1364 ++next->usecount;
1150 1365
1151 if (expect_true (!next->cctx)) 1366 if (expect_true (!next->cctx))
1152 next->cctx = cctx_get (aTHX); 1367 next->cctx = cctx_get (aTHX);
1368
1369 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1370 transfer_next = next;
1153 1371
1154 if (expect_false (prev__cctx != next->cctx)) 1372 if (expect_false (prev__cctx != next->cctx))
1155 { 1373 {
1156 prev__cctx->top_env = PL_top_env; 1374 prev__cctx->top_env = PL_top_env;
1157 PL_top_env = next->cctx->top_env; 1375 PL_top_env = next->cctx->top_env;
1158 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1376 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1159 } 1377 }
1160 1378
1161 free_coro_mortal (aTHX); 1379 transfer_tail (aTHX);
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 }
1176 } 1380 }
1177} 1381}
1178 1382
1179struct transfer_args
1180{
1181 struct coro *prev, *next;
1182};
1183
1184#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1383#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1185#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1384#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1186 1385
1187/** high level stuff ********************************************************/ 1386/** high level stuff ********************************************************/
1188 1387
1189static int 1388static int
1190coro_state_destroy (pTHX_ struct coro *coro) 1389coro_state_destroy (pTHX_ struct coro *coro)
1191{ 1390{
1192 if (coro->flags & CF_DESTROYED) 1391 if (coro->flags & CF_DESTROYED)
1193 return 0; 1392 return 0;
1393
1394 if (coro->on_destroy)
1395 coro->on_destroy (aTHX_ coro);
1194 1396
1195 coro->flags |= CF_DESTROYED; 1397 coro->flags |= CF_DESTROYED;
1196 1398
1197 if (coro->flags & CF_READY) 1399 if (coro->flags & CF_READY)
1198 { 1400 {
1199 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1401 /* reduce nready, as destroying a ready coro effectively unreadies it */
1200 /* alternative: look through all ready queues and remove the coro */ 1402 /* alternative: look through all ready queues and remove the coro */
1201 LOCK;
1202 --coro_nready; 1403 --coro_nready;
1203 UNLOCK;
1204 } 1404 }
1205 else 1405 else
1206 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1406 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1207 1407
1208 if (coro->mainstack && coro->mainstack != main_mainstack) 1408 if (coro->mainstack && coro->mainstack != main_mainstack)
1209 { 1409 {
1210 struct coro temp; 1410 struct coro temp;
1211 1411
1212 if (coro->flags & CF_RUNNING) 1412 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1213 croak ("FATAL: tried to destroy currently running coroutine");
1214 1413
1215 save_perl (aTHX_ &temp); 1414 save_perl (aTHX_ &temp);
1216 load_perl (aTHX_ coro); 1415 load_perl (aTHX_ coro);
1217 1416
1218 coro_destroy (aTHX_ coro); 1417 coro_destruct (aTHX_ coro);
1219 1418
1220 load_perl (aTHX_ &temp); 1419 load_perl (aTHX_ &temp);
1221 1420
1222 coro->slot = 0; 1421 coro->slot = 0;
1223 } 1422 }
… …
1269# define MGf_DUP 0 1468# define MGf_DUP 0
1270#endif 1469#endif
1271}; 1470};
1272 1471
1273static void 1472static void
1274prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1473prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1275{ 1474{
1276 ta->prev = SvSTATE (prev_sv); 1475 ta->prev = SvSTATE (prev_sv);
1277 ta->next = SvSTATE (next_sv); 1476 ta->next = SvSTATE (next_sv);
1278 TRANSFER_CHECK (*ta); 1477 TRANSFER_CHECK (*ta);
1279} 1478}
1280 1479
1281static void 1480static void
1282api_transfer (SV *prev_sv, SV *next_sv) 1481api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1283{ 1482{
1284 dTHX;
1285 struct transfer_args ta; 1483 struct coro_transfer_args ta;
1286 1484
1287 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1485 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1288 TRANSFER (ta); 1486 TRANSFER (ta, 1);
1289} 1487}
1290 1488
1291/** Coro ********************************************************************/ 1489/** Coro ********************************************************************/
1292 1490
1293static void 1491static void
… …
1295{ 1493{
1296 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1297} 1495}
1298 1496
1299static SV * 1497static SV *
1300coro_deq (pTHX_ int min_prio) 1498coro_deq (pTHX)
1301{ 1499{
1302 int prio = PRIO_MAX - PRIO_MIN; 1500 int prio;
1303 1501
1304 min_prio -= PRIO_MIN;
1305 if (min_prio < 0)
1306 min_prio = 0;
1307
1308 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1309 if (AvFILLp (coro_ready [prio]) >= 0) 1503 if (AvFILLp (coro_ready [prio]) >= 0)
1310 return av_shift (coro_ready [prio]); 1504 return av_shift (coro_ready [prio]);
1311 1505
1312 return 0; 1506 return 0;
1313} 1507}
1314 1508
1315static int 1509static int
1316api_ready (SV *coro_sv) 1510api_ready (pTHX_ SV *coro_sv)
1317{ 1511{
1318 dTHX;
1319 struct coro *coro; 1512 struct coro *coro;
1513 SV *sv_hook;
1514 void (*xs_hook)(void);
1320 1515
1321 if (SvROK (coro_sv)) 1516 if (SvROK (coro_sv))
1322 coro_sv = SvRV (coro_sv); 1517 coro_sv = SvRV (coro_sv);
1323 1518
1324 coro = SvSTATE (coro_sv); 1519 coro = SvSTATE (coro_sv);
… …
1326 if (coro->flags & CF_READY) 1521 if (coro->flags & CF_READY)
1327 return 0; 1522 return 0;
1328 1523
1329 coro->flags |= CF_READY; 1524 coro->flags |= CF_READY;
1330 1525
1331 LOCK; 1526 sv_hook = coro_nready ? 0 : coro_readyhook;
1527 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1528
1332 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1529 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1333 ++coro_nready; 1530 ++coro_nready;
1334 UNLOCK; 1531
1532 if (sv_hook)
1533 {
1534 dSP;
1535
1536 ENTER;
1537 SAVETMPS;
1538
1539 PUSHMARK (SP);
1540 PUTBACK;
1541 call_sv (sv_hook, G_DISCARD);
1542 SPAGAIN;
1543
1544 FREETMPS;
1545 LEAVE;
1546 }
1547
1548 if (xs_hook)
1549 xs_hook ();
1335 1550
1336 return 1; 1551 return 1;
1337} 1552}
1338 1553
1339static int 1554static int
1340api_is_ready (SV *coro_sv) 1555api_is_ready (pTHX_ SV *coro_sv)
1341{ 1556{
1342 dTHX;
1343 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1557 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1344} 1558}
1345 1559
1346static void 1560INLINE void
1347prepare_schedule (pTHX_ struct transfer_args *ta) 1561prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1348{ 1562{
1349 SV *prev_sv, *next_sv; 1563 SV *prev_sv, *next_sv;
1350 1564
1351 for (;;) 1565 for (;;)
1352 { 1566 {
1353 LOCK;
1354 next_sv = coro_deq (aTHX_ PRIO_MIN); 1567 next_sv = coro_deq (aTHX);
1355 1568
1356 /* nothing to schedule: call the idle handler */ 1569 /* nothing to schedule: call the idle handler */
1357 if (expect_false (!next_sv)) 1570 if (expect_false (!next_sv))
1358 { 1571 {
1359 dSP; 1572 dSP;
1360 UNLOCK;
1361 1573
1362 ENTER; 1574 ENTER;
1363 SAVETMPS; 1575 SAVETMPS;
1364 1576
1365 PUSHMARK (SP); 1577 PUSHMARK (SP);
1366 PUTBACK; 1578 PUTBACK;
1367 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1579 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1580 SPAGAIN;
1368 1581
1369 FREETMPS; 1582 FREETMPS;
1370 LEAVE; 1583 LEAVE;
1371 continue; 1584 continue;
1372 } 1585 }
… …
1374 ta->next = SvSTATE (next_sv); 1587 ta->next = SvSTATE (next_sv);
1375 1588
1376 /* cannot transfer to destroyed coros, skip and look for next */ 1589 /* cannot transfer to destroyed coros, skip and look for next */
1377 if (expect_false (ta->next->flags & CF_DESTROYED)) 1590 if (expect_false (ta->next->flags & CF_DESTROYED))
1378 { 1591 {
1379 UNLOCK;
1380 SvREFCNT_dec (next_sv); 1592 SvREFCNT_dec (next_sv);
1381 /* coro_nready is already taken care of by destroy */ 1593 /* coro_nready has already been taken care of by destroy */
1382 continue; 1594 continue;
1383 } 1595 }
1384 1596
1385 --coro_nready; 1597 --coro_nready;
1386 UNLOCK;
1387 break; 1598 break;
1388 } 1599 }
1389 1600
1390 /* free this only after the transfer */ 1601 /* free this only after the transfer */
1391 prev_sv = SvRV (coro_current); 1602 prev_sv = SvRV (coro_current);
1392 ta->prev = SvSTATE (prev_sv); 1603 ta->prev = SvSTATE (prev_sv);
1393 TRANSFER_CHECK (*ta); 1604 TRANSFER_CHECK (*ta);
1394 assert (ta->next->flags & CF_READY); 1605 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1395 ta->next->flags &= ~CF_READY; 1606 ta->next->flags &= ~CF_READY;
1396 SvRV_set (coro_current, next_sv); 1607 SvRV_set (coro_current, next_sv);
1397 1608
1398 LOCK;
1399 free_coro_mortal (aTHX); 1609 free_coro_mortal (aTHX);
1400 coro_mortal = prev_sv; 1610 coro_mortal = prev_sv;
1401 UNLOCK;
1402} 1611}
1403 1612
1404static void 1613INLINE void
1405prepare_cede (pTHX_ struct transfer_args *ta) 1614prepare_cede (pTHX_ struct coro_transfer_args *ta)
1406{ 1615{
1407 api_ready (coro_current); 1616 api_ready (aTHX_ coro_current);
1408 prepare_schedule (aTHX_ ta); 1617 prepare_schedule (aTHX_ ta);
1409} 1618}
1410 1619
1620INLINE void
1621prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1622{
1623 SV *prev = SvRV (coro_current);
1624
1625 if (coro_nready)
1626 {
1627 prepare_schedule (aTHX_ ta);
1628 api_ready (aTHX_ prev);
1629 }
1630 else
1631 prepare_nop (aTHX_ ta);
1632}
1633
1634static void
1635api_schedule (pTHX)
1636{
1637 struct coro_transfer_args ta;
1638
1639 prepare_schedule (aTHX_ &ta);
1640 TRANSFER (ta, 1);
1641}
1642
1411static int 1643static int
1412prepare_cede_notself (pTHX_ struct transfer_args *ta) 1644api_cede (pTHX)
1413{ 1645{
1414 if (coro_nready) 1646 struct coro_transfer_args ta;
1415 { 1647
1416 SV *prev = SvRV (coro_current);
1417 prepare_schedule (aTHX_ ta); 1648 prepare_cede (aTHX_ &ta);
1418 api_ready (prev); 1649
1650 if (expect_true (ta.prev != ta.next))
1651 {
1652 TRANSFER (ta, 1);
1419 return 1; 1653 return 1;
1420 } 1654 }
1421 else 1655 else
1422 return 0; 1656 return 0;
1423} 1657}
1424 1658
1425static void
1426api_schedule (void)
1427{
1428 dTHX;
1429 struct transfer_args ta;
1430
1431 prepare_schedule (aTHX_ &ta);
1432 TRANSFER (ta);
1433}
1434
1435static int 1659static int
1436api_cede (void) 1660api_cede_notself (pTHX)
1437{ 1661{
1438 dTHX; 1662 if (coro_nready)
1663 {
1439 struct transfer_args ta; 1664 struct coro_transfer_args ta;
1440 1665
1441 prepare_cede (aTHX_ &ta); 1666 prepare_cede_notself (aTHX_ &ta);
1442
1443 if (expect_true (ta.prev != ta.next))
1444 {
1445 TRANSFER (ta); 1667 TRANSFER (ta, 1);
1446 return 1; 1668 return 1;
1447 } 1669 }
1448 else 1670 else
1449 return 0; 1671 return 0;
1450} 1672}
1451 1673
1452static int 1674static void
1453api_cede_notself (void)
1454{
1455 dTHX;
1456 struct transfer_args ta;
1457
1458 if (prepare_cede_notself (aTHX_ &ta))
1459 {
1460 TRANSFER (ta);
1461 return 1;
1462 }
1463 else
1464 return 0;
1465}
1466
1467static void
1468api_trace (SV *coro_sv, int flags) 1675api_trace (pTHX_ SV *coro_sv, int flags)
1469{ 1676{
1470 dTHX;
1471 struct coro *coro = SvSTATE (coro_sv); 1677 struct coro *coro = SvSTATE (coro_sv);
1472 1678
1473 if (flags & CC_TRACE) 1679 if (flags & CC_TRACE)
1474 { 1680 {
1475 if (!coro->cctx) 1681 if (!coro->cctx)
1476 coro->cctx = cctx_new (); 1682 coro->cctx = cctx_new_run ();
1477 else if (!(coro->cctx->flags & CC_TRACE)) 1683 else if (!(coro->cctx->flags & CC_TRACE))
1478 croak ("cannot enable tracing on coroutine with custom stack"); 1684 croak ("cannot enable tracing on coroutine with custom stack,");
1479 1685
1480 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1686 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1481 } 1687 }
1482 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1688 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1483 { 1689 {
… …
1488 else 1694 else
1489 coro->slot->runops = RUNOPS_DEFAULT; 1695 coro->slot->runops = RUNOPS_DEFAULT;
1490 } 1696 }
1491} 1697}
1492 1698
1699/*****************************************************************************/
1700/* PerlIO::cede */
1701
1702typedef struct
1703{
1704 PerlIOBuf base;
1705 NV next, every;
1706} PerlIOCede;
1707
1708static IV
1709PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1710{
1711 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1712
1713 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1714 self->next = nvtime () + self->every;
1715
1716 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1717}
1718
1719static SV *
1720PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1721{
1722 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1723
1724 return newSVnv (self->every);
1725}
1726
1727static IV
1728PerlIOCede_flush (pTHX_ PerlIO *f)
1729{
1730 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1731 double now = nvtime ();
1732
1733 if (now >= self->next)
1734 {
1735 api_cede (aTHX);
1736 self->next = now + self->every;
1737 }
1738
1739 return PerlIOBuf_flush (aTHX_ f);
1740}
1741
1742static PerlIO_funcs PerlIO_cede =
1743{
1744 sizeof(PerlIO_funcs),
1745 "cede",
1746 sizeof(PerlIOCede),
1747 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1748 PerlIOCede_pushed,
1749 PerlIOBuf_popped,
1750 PerlIOBuf_open,
1751 PerlIOBase_binmode,
1752 PerlIOCede_getarg,
1753 PerlIOBase_fileno,
1754 PerlIOBuf_dup,
1755 PerlIOBuf_read,
1756 PerlIOBuf_unread,
1757 PerlIOBuf_write,
1758 PerlIOBuf_seek,
1759 PerlIOBuf_tell,
1760 PerlIOBuf_close,
1761 PerlIOCede_flush,
1762 PerlIOBuf_fill,
1763 PerlIOBase_eof,
1764 PerlIOBase_error,
1765 PerlIOBase_clearerr,
1766 PerlIOBase_setlinebuf,
1767 PerlIOBuf_get_base,
1768 PerlIOBuf_bufsiz,
1769 PerlIOBuf_get_ptr,
1770 PerlIOBuf_get_cnt,
1771 PerlIOBuf_set_ptrcnt,
1772};
1773
1774/*****************************************************************************/
1775
1776static const CV *slf_cv; /* for quick consistency check */
1777
1778static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1779static SV *slf_arg0;
1780static SV *slf_arg1;
1781static SV *slf_arg2;
1782
1783/* this restores the stack in the case we patched the entersub, to */
1784/* recreate the stack frame as perl will on following calls */
1785/* since entersub cleared the stack */
1786static OP *
1787pp_restore (pTHX)
1788{
1789 dSP;
1790
1791 PUSHMARK (SP);
1792
1793 EXTEND (SP, 3);
1794 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1795 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1796 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1797 PUSHs ((SV *)CvGV (slf_cv));
1798
1799 RETURNOP (slf_restore.op_first);
1800}
1801
1802static void
1803slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1804{
1805 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1806}
1807
1808static void
1809slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1810{
1811 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1812
1813 frame->prepare = slf_prepare_set_stacklevel;
1814 frame->check = slf_check_nop;
1815 frame->data = (void *)SvIV (arg [0]);
1816}
1817
1818static void
1819slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1820{
1821 SV **arg = (SV **)slf_frame.data;
1822
1823 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1824}
1825
1826static void
1827slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1828{
1829 if (items != 2)
1830 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1831
1832 frame->prepare = slf_prepare_transfer;
1833 frame->check = slf_check_nop;
1834 frame->data = (void *)arg; /* let's hope it will stay valid */
1835}
1836
1837static void
1838slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 frame->prepare = prepare_schedule;
1841 frame->check = slf_check_nop;
1842}
1843
1844static void
1845slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1846{
1847 frame->prepare = prepare_cede;
1848 frame->check = slf_check_nop;
1849}
1850
1851static void
1852slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1853{
1854 frame->prepare = prepare_cede_notself;
1855 frame->check = slf_check_nop;
1856}
1857
1858/* we hijack an hopefully unused CV flag for our purposes */
1859#define CVf_SLF 0x4000
1860
1861/*
1862 * these not obviously related functions are all rolled into one
1863 * function to increase chances that they all will call transfer with the same
1864 * stack offset
1865 * SLF stands for "schedule-like-function".
1866 */
1867static OP *
1868pp_slf (pTHX)
1869{
1870 I32 checkmark; /* mark SP to see how many elements check has pushed */
1871
1872 /* set up the slf frame, unless it has already been set-up */
1873 /* the latter happens when a new coro has been started */
1874 /* or when a new cctx was attached to an existing coroutine */
1875 if (expect_true (!slf_frame.prepare))
1876 {
1877 /* first iteration */
1878 dSP;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 SV *gv = *sp;
1882
1883 /* do a quick consistency check on the "function" object, and if it isn't */
1884 /* for us, divert to the real entersub */
1885 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1886 return PL_ppaddr[OP_ENTERSUB](aTHX);
1887
1888 /* pop args */
1889 SP = PL_stack_base + POPMARK;
1890
1891 if (!(PL_op->op_flags & OPf_STACKED))
1892 {
1893 /* ampersand-form of call, use @_ instead of stack */
1894 AV *av = GvAV (PL_defgv);
1895 arg = AvARRAY (av);
1896 items = AvFILLp (av) + 1;
1897 }
1898
1899 PUTBACK;
1900
1901 /* now call the init function, which needs to set up slf_frame */
1902 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1903 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1904 }
1905
1906 /* now that we have a slf_frame, interpret it! */
1907 /* we use a callback system not to make the code needlessly */
1908 /* complicated, but so we can run multiple perl coros from one cctx */
1909
1910 do
1911 {
1912 struct coro_transfer_args ta;
1913
1914 slf_frame.prepare (aTHX_ &ta);
1915 TRANSFER (ta, 0);
1916
1917 checkmark = PL_stack_sp - PL_stack_base;
1918 }
1919 while (slf_frame.check (aTHX_ &slf_frame));
1920
1921 {
1922 dSP;
1923 SV **bot = PL_stack_base + checkmark;
1924 int gimme = GIMME_V;
1925
1926 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1927
1928 /* make sure we put something on the stack in scalar context */
1929 if (gimme == G_SCALAR)
1930 {
1931 if (sp == bot)
1932 XPUSHs (&PL_sv_undef);
1933
1934 SP = bot + 1;
1935 }
1936
1937 PUTBACK;
1938 }
1939
1940 return NORMAL;
1941}
1942
1943static void
1944api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1945{
1946 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1947
1948 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1949 && PL_op->op_ppaddr != pp_slf)
1950 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1951
1952 if (items > 3)
1953 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1954
1955 CvFLAGS (cv) |= CVf_SLF;
1956 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1957 slf_cv = cv;
1958
1959 /* we patch the op, and then re-run the whole call */
1960 /* we have to put the same argument on the stack for this to work */
1961 /* and this will be done by pp_restore */
1962 slf_restore.op_next = (OP *)&slf_restore;
1963 slf_restore.op_type = OP_CUSTOM;
1964 slf_restore.op_ppaddr = pp_restore;
1965 slf_restore.op_first = PL_op;
1966
1967 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1968 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1969 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1970
1971 PL_op->op_ppaddr = pp_slf;
1972
1973 PL_op = (OP *)&slf_restore;
1974}
1975
1976/*****************************************************************************/
1977
1978static void
1979coro_semaphore_adjust (AV *av, int adjust)
1980{
1981 SV *count_sv = AvARRAY (av)[0];
1982 IV count = SvIVX (count_sv);
1983
1984 count += adjust;
1985 SvIVX (count_sv) = count;
1986
1987 /* now wake up as many waiters as possible */
1988 while (count > 0 && AvFILLp (av) >= count)
1989 {
1990 SV *cb;
1991
1992 /* swap first two elements so we can shift a waiter */
1993 AvARRAY (av)[0] = AvARRAY (av)[1];
1994 AvARRAY (av)[1] = count_sv;
1995 cb = av_shift (av);
1996
1997 if (SvOBJECT (cb))
1998 api_ready (aTHX_ cb);
1999 else
2000 croak ("callbacks not yet supported");
2001
2002 SvREFCNT_dec (cb);
2003
2004 --count;
2005 }
2006}
2007
2008static void
2009coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2010{
2011 /* call $sem->adjust (0) to possibly wake up some waiters */
2012 coro_semaphore_adjust ((AV *)coro->slf_frame.data, 0);
2013}
2014
2015static int
2016slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2017{
2018 AV *av = (AV *)frame->data;
2019 SV *count_sv = AvARRAY (av)[0];
2020
2021 if (SvIVX (count_sv) > 0)
2022 {
2023 SvSTATE (coro_current)->on_destroy = 0;
2024 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2025 return 0;
2026 }
2027 else
2028 {
2029 int i;
2030 /* if we were woken up but can't down, we look through the whole */
2031 /* waiters list and only add us if we aren't in there already */
2032 /* this avoids some degenerate memory usage cases */
2033
2034 for (i = 1; i <= AvFILLp (av); ++i)
2035 if (AvARRAY (av)[i] == SvRV (coro_current))
2036 return 1;
2037
2038 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2039 return 1;
2040 }
2041}
2042
2043static void
2044slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2045{
2046 AV *av = (AV *)SvRV (arg [0]);
2047
2048 if (SvIVX (AvARRAY (av)[0]) > 0)
2049 {
2050 frame->data = (void *)av;
2051 frame->prepare = prepare_nop;
2052 }
2053 else
2054 {
2055 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2056
2057 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2058 frame->prepare = prepare_schedule;
2059
2060 /* to avoid race conditions when a woken-up coro gets terminated */
2061 /* we arrange for a temporary on_destroy that calls adjust (0) */
2062 SvSTATE (coro_current)->on_destroy = coro_semaphore_on_destroy;
2063 }
2064
2065 frame->check = slf_check_semaphore_down;
2066
2067}
2068
2069/*****************************************************************************/
2070
2071#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2072
2073/* create a closure from XS, returns a code reference */
2074/* the arg can be accessed via GENSUB_ARG from the callback */
2075/* the callback must use dXSARGS/XSRETURN */
2076static SV *
2077gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2078{
2079 CV *cv = (CV *)NEWSV (0, 0);
2080
2081 sv_upgrade ((SV *)cv, SVt_PVCV);
2082
2083 CvANON_on (cv);
2084 CvISXSUB_on (cv);
2085 CvXSUB (cv) = xsub;
2086 GENSUB_ARG = arg;
2087
2088 return newRV_noinc ((SV *)cv);
2089}
2090
2091/*****************************************************************************/
2092
1493MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2093MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1494 2094
1495PROTOTYPES: DISABLE 2095PROTOTYPES: DISABLE
1496 2096
1497BOOT: 2097BOOT:
1498{ 2098{
1499#ifdef USE_ITHREADS 2099#ifdef USE_ITHREADS
1500 MUTEX_INIT (&coro_mutex); 2100 MUTEX_INIT (&coro_lock);
2101# if CORO_PTHREAD
2102 coro_thx = PERL_GET_CONTEXT;
2103# endif
1501#endif 2104#endif
1502 BOOT_PAGESIZE; 2105 BOOT_PAGESIZE;
1503 2106
1504 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2107 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1505 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2108 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1506 2109
2110 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2111 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2112 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2113
1507 hv_sig = coro_get_hv ("SIG", TRUE); 2114 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1508 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 2115 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1509 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 2116 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
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 2117
1514 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2118 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1515 2119
1516 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2120 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1517 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2121 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1522 main_top_env = PL_top_env; 2126 main_top_env = PL_top_env;
1523 2127
1524 while (main_top_env->je_prev) 2128 while (main_top_env->je_prev)
1525 main_top_env = main_top_env->je_prev; 2129 main_top_env = main_top_env->je_prev;
1526 2130
2131 {
2132 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2133
2134 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2135 hv_store_ent (PL_custom_op_names, slf,
2136 newSVpv ("coro_slf", 0), 0);
2137
2138 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2139 hv_store_ent (PL_custom_op_descs, slf,
2140 newSVpv ("coro schedule like function", 0), 0);
2141 }
2142
1527 coroapi.ver = CORO_API_VERSION; 2143 coroapi.ver = CORO_API_VERSION;
2144 coroapi.rev = CORO_API_REVISION;
2145
1528 coroapi.transfer = api_transfer; 2146 coroapi.transfer = api_transfer;
2147
2148 coroapi.sv_state = SvSTATE_;
2149 coroapi.execute_slf = api_execute_slf;
2150 coroapi.prepare_nop = prepare_nop;
2151 coroapi.prepare_schedule = prepare_schedule;
2152 coroapi.prepare_cede = prepare_cede;
2153 coroapi.prepare_cede_notself = prepare_cede_notself;
2154
2155 {
2156 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2157
2158 if (!svp) croak ("Time::HiRes is required");
2159 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2160
2161 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2162 }
1529 2163
1530 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2164 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1531} 2165}
1532 2166
1533SV * 2167SV *
1534new (char *klass, ...) 2168new (char *klass, ...)
1535 CODE: 2169 CODE:
1536{ 2170{
1537 struct coro *coro; 2171 struct coro *coro;
2172 MAGIC *mg;
1538 HV *hv; 2173 HV *hv;
1539 int i; 2174 int i;
1540 2175
1541 Newz (0, coro, 1, struct coro); 2176 Newz (0, coro, 1, struct coro);
1542 coro->args = newAV (); 2177 coro->args = newAV ();
… …
1545 if (coro_first) coro_first->prev = coro; 2180 if (coro_first) coro_first->prev = coro;
1546 coro->next = coro_first; 2181 coro->next = coro_first;
1547 coro_first = coro; 2182 coro_first = coro;
1548 2183
1549 coro->hv = hv = newHV (); 2184 coro->hv = hv = newHV ();
1550 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2185 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2186 mg->mg_flags |= MGf_DUP;
1551 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2187 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1552 2188
1553 av_extend (coro->args, items - 1); 2189 av_extend (coro->args, items - 1);
1554 for (i = 1; i < items; i++) 2190 for (i = 1; i < items; i++)
1555 av_push (coro->args, newSVsv (ST (i))); 2191 av_push (coro->args, newSVsv (ST (i)));
1556} 2192}
1557 OUTPUT: 2193 OUTPUT:
1558 RETVAL 2194 RETVAL
1559 2195
1560# these not obviously related functions are all rolled into the same xs
1561# function to increase chances that they all will call transfer with the same
1562# stack offset
1563void 2196void
1564_set_stacklevel (...) 2197_set_stacklevel (...)
1565 ALIAS: 2198 CODE:
1566 Coro::State::transfer = 1 2199 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1567 Coro::schedule = 2
1568 Coro::cede = 3
1569 Coro::cede_notself = 4
1570 CODE:
1571{
1572 struct transfer_args ta;
1573 2200
1574 switch (ix) 2201void
1575 { 2202transfer (...)
1576 case 0: 2203 PROTOTYPE: $$
1577 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2204 CODE:
1578 ta.next = 0; 2205 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1579 break;
1580
1581 case 1:
1582 if (items != 2)
1583 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1584
1585 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1586 break;
1587
1588 case 2:
1589 prepare_schedule (aTHX_ &ta);
1590 break;
1591
1592 case 3:
1593 prepare_cede (aTHX_ &ta);
1594 break;
1595
1596 case 4:
1597 if (!prepare_cede_notself (aTHX_ &ta))
1598 XSRETURN_EMPTY;
1599
1600 break;
1601 }
1602
1603 BARRIER;
1604 TRANSFER (ta);
1605
1606 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1607 XSRETURN_YES;
1608}
1609 2206
1610bool 2207bool
1611_destroy (SV *coro_sv) 2208_destroy (SV *coro_sv)
1612 CODE: 2209 CODE:
1613 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2210 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1614 OUTPUT: 2211 OUTPUT:
1615 RETVAL 2212 RETVAL
1616 2213
1617void 2214void
1618_exit (code) 2215_exit (int code)
1619 int code
1620 PROTOTYPE: $ 2216 PROTOTYPE: $
1621 CODE: 2217 CODE:
1622 _exit (code); 2218 _exit (code);
1623 2219
1624int 2220int
1625cctx_stacksize (int new_stacksize = 0) 2221cctx_stacksize (int new_stacksize = 0)
2222 PROTOTYPE: ;$
1626 CODE: 2223 CODE:
1627 RETVAL = coro_stacksize; 2224 RETVAL = cctx_stacksize;
1628 if (new_stacksize) 2225 if (new_stacksize)
2226 {
1629 coro_stacksize = new_stacksize; 2227 cctx_stacksize = new_stacksize;
2228 ++cctx_gen;
2229 }
1630 OUTPUT: 2230 OUTPUT:
1631 RETVAL 2231 RETVAL
1632 2232
1633int 2233int
2234cctx_max_idle (int max_idle = 0)
2235 PROTOTYPE: ;$
2236 CODE:
2237 RETVAL = cctx_max_idle;
2238 if (max_idle > 1)
2239 cctx_max_idle = max_idle;
2240 OUTPUT:
2241 RETVAL
2242
2243int
1634cctx_count () 2244cctx_count ()
2245 PROTOTYPE:
1635 CODE: 2246 CODE:
1636 RETVAL = cctx_count; 2247 RETVAL = cctx_count;
1637 OUTPUT: 2248 OUTPUT:
1638 RETVAL 2249 RETVAL
1639 2250
1640int 2251int
1641cctx_idle () 2252cctx_idle ()
2253 PROTOTYPE:
1642 CODE: 2254 CODE:
1643 RETVAL = cctx_idle; 2255 RETVAL = cctx_idle;
1644 OUTPUT: 2256 OUTPUT:
1645 RETVAL 2257 RETVAL
1646 2258
1647void 2259void
1648list () 2260list ()
2261 PROTOTYPE:
1649 PPCODE: 2262 PPCODE:
1650{ 2263{
1651 struct coro *coro; 2264 struct coro *coro;
1652 for (coro = coro_first; coro; coro = coro->next) 2265 for (coro = coro_first; coro; coro = coro->next)
1653 if (coro->hv) 2266 if (coro->hv)
… …
1658call (Coro::State coro, SV *coderef) 2271call (Coro::State coro, SV *coderef)
1659 ALIAS: 2272 ALIAS:
1660 eval = 1 2273 eval = 1
1661 CODE: 2274 CODE:
1662{ 2275{
1663 if (coro->mainstack) 2276 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1664 { 2277 {
1665 struct coro temp; 2278 struct coro temp;
1666 2279
1667 if (!(coro->flags & CF_RUNNING)) 2280 if (!(coro->flags & CF_RUNNING))
1668 { 2281 {
2282 PUTBACK;
1669 save_perl (aTHX_ &temp); 2283 save_perl (aTHX_ &temp);
1670 load_perl (aTHX_ coro); 2284 load_perl (aTHX_ coro);
1671 } 2285 }
1672 2286
1673 { 2287 {
1674 dSP; 2288 dSP;
1675 ENTER; 2289 ENTER;
1676 SAVETMPS; 2290 SAVETMPS;
2291 PUTBACK;
2292 PUSHSTACK;
1677 PUSHMARK (SP); 2293 PUSHMARK (SP);
1678 PUTBACK;
1679 2294
1680 if (ix) 2295 if (ix)
1681 eval_sv (coderef, 0); 2296 eval_sv (coderef, 0);
1682 else 2297 else
1683 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2298 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1684 2299
2300 POPSTACK;
1685 SPAGAIN; 2301 SPAGAIN;
1686 FREETMPS; 2302 FREETMPS;
1687 LEAVE; 2303 LEAVE;
1688 PUTBACK; 2304 PUTBACK;
1689 } 2305 }
1690 2306
1691 if (!(coro->flags & CF_RUNNING)) 2307 if (!(coro->flags & CF_RUNNING))
1692 { 2308 {
1693 save_perl (aTHX_ coro); 2309 save_perl (aTHX_ coro);
1694 load_perl (aTHX_ &temp); 2310 load_perl (aTHX_ &temp);
2311 SPAGAIN;
1695 } 2312 }
1696 } 2313 }
1697} 2314}
1698 2315
1699SV * 2316SV *
… …
1708 RETVAL = boolSV (coro->flags & ix); 2325 RETVAL = boolSV (coro->flags & ix);
1709 OUTPUT: 2326 OUTPUT:
1710 RETVAL 2327 RETVAL
1711 2328
1712void 2329void
2330throw (Coro::State self, SV *throw = &PL_sv_undef)
2331 PROTOTYPE: $;$
2332 CODE:
2333 SvREFCNT_dec (self->throw);
2334 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2335
2336void
1713api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2337api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2338 PROTOTYPE: $;$
2339 C_ARGS: aTHX_ coro, flags
1714 2340
1715SV * 2341SV *
1716has_stack (Coro::State coro) 2342has_cctx (Coro::State coro)
1717 PROTOTYPE: $ 2343 PROTOTYPE: $
1718 CODE: 2344 CODE:
1719 RETVAL = boolSV (!!coro->cctx); 2345 RETVAL = boolSV (!!coro->cctx);
1720 OUTPUT: 2346 OUTPUT:
1721 RETVAL 2347 RETVAL
… …
1726 CODE: 2352 CODE:
1727 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2353 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1728 OUTPUT: 2354 OUTPUT:
1729 RETVAL 2355 RETVAL
1730 2356
1731IV 2357UV
1732rss (Coro::State coro) 2358rss (Coro::State coro)
1733 PROTOTYPE: $ 2359 PROTOTYPE: $
1734 ALIAS: 2360 ALIAS:
1735 usecount = 1 2361 usecount = 1
1736 CODE: 2362 CODE:
… …
1740 case 1: RETVAL = coro->usecount; break; 2366 case 1: RETVAL = coro->usecount; break;
1741 } 2367 }
1742 OUTPUT: 2368 OUTPUT:
1743 RETVAL 2369 RETVAL
1744 2370
2371void
2372force_cctx ()
2373 PROTOTYPE:
2374 CODE:
2375 struct coro *coro = SvSTATE (coro_current);
2376 coro->cctx->idle_sp = 0;
2377
2378void
2379swap_defsv (Coro::State self)
2380 PROTOTYPE: $
2381 ALIAS:
2382 swap_defav = 1
2383 CODE:
2384 if (!self->slot)
2385 croak ("cannot swap state with coroutine that has no saved state,");
2386 else
2387 {
2388 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2389 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2390
2391 SV *tmp = *src; *src = *dst; *dst = tmp;
2392 }
1745 2393
1746MODULE = Coro::State PACKAGE = Coro 2394MODULE = Coro::State PACKAGE = Coro
1747 2395
1748BOOT: 2396BOOT:
1749{ 2397{
1750 int i; 2398 int i;
1751 2399
1752 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1753 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1754 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 2400 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2401 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2402 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1755 2403
1756 coro_current = coro_get_sv ("Coro::current", FALSE); 2404 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1757 SvREADONLY_on (coro_current); 2405 SvREADONLY_on (coro_current);
1758 2406
1759 coro_stash = gv_stashpv ("Coro", TRUE); 2407 coro_stash = gv_stashpv ("Coro", TRUE);
1760 2408
1761 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2409 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
1767 2415
1768 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2416 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1769 coro_ready[i] = newAV (); 2417 coro_ready[i] = newAV ();
1770 2418
1771 { 2419 {
1772 SV *sv = perl_get_sv ("Coro::API", TRUE); 2420 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1773 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1774 2421
1775 coroapi.schedule = api_schedule; 2422 coroapi.schedule = api_schedule;
1776 coroapi.cede = api_cede; 2423 coroapi.cede = api_cede;
1777 coroapi.cede_notself = api_cede_notself; 2424 coroapi.cede_notself = api_cede_notself;
1778 coroapi.ready = api_ready; 2425 coroapi.ready = api_ready;
1779 coroapi.is_ready = api_is_ready; 2426 coroapi.is_ready = api_is_ready;
1780 coroapi.nready = &coro_nready; 2427 coroapi.nready = coro_nready;
1781 coroapi.current = coro_current; 2428 coroapi.current = coro_current;
1782 2429
1783 GCoroAPI = &coroapi; 2430 GCoroAPI = &coroapi;
1784 sv_setiv (sv, (IV)&coroapi); 2431 sv_setiv (sv, (IV)&coroapi);
1785 SvREADONLY_on (sv); 2432 SvREADONLY_on (sv);
1786 } 2433 }
1787} 2434}
2435
2436void
2437schedule (...)
2438 CODE:
2439 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
2440
2441void
2442cede (...)
2443 CODE:
2444 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
2445
2446void
2447cede_notself (...)
2448 CODE:
2449 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
1788 2450
1789void 2451void
1790_set_current (SV *current) 2452_set_current (SV *current)
1791 PROTOTYPE: $ 2453 PROTOTYPE: $
1792 CODE: 2454 CODE:
1793 SvREFCNT_dec (SvRV (coro_current)); 2455 SvREFCNT_dec (SvRV (coro_current));
1794 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2456 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2457
2458void
2459_set_readyhook (SV *hook)
2460 PROTOTYPE: $
2461 CODE:
2462 SvREFCNT_dec (coro_readyhook);
2463 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1795 2464
1796int 2465int
1797prio (Coro::State coro, int newprio = 0) 2466prio (Coro::State coro, int newprio = 0)
2467 PROTOTYPE: $;$
1798 ALIAS: 2468 ALIAS:
1799 nice = 1 2469 nice = 1
1800 CODE: 2470 CODE:
1801{ 2471{
1802 RETVAL = coro->prio; 2472 RETVAL = coro->prio;
… …
1817 2487
1818SV * 2488SV *
1819ready (SV *self) 2489ready (SV *self)
1820 PROTOTYPE: $ 2490 PROTOTYPE: $
1821 CODE: 2491 CODE:
1822 RETVAL = boolSV (api_ready (self)); 2492 RETVAL = boolSV (api_ready (aTHX_ self));
1823 OUTPUT: 2493 OUTPUT:
1824 RETVAL 2494 RETVAL
1825 2495
1826int 2496int
1827nready (...) 2497nready (...)
… …
1829 CODE: 2499 CODE:
1830 RETVAL = coro_nready; 2500 RETVAL = coro_nready;
1831 OUTPUT: 2501 OUTPUT:
1832 RETVAL 2502 RETVAL
1833 2503
1834void
1835throw (Coro::State self, SV *throw = &PL_sv_undef)
1836 PROTOTYPE: $;$
1837 CODE:
1838 SvREFCNT_dec (self->throw);
1839 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1840
1841# for async_pool speedup 2504# for async_pool speedup
1842void 2505void
1843_pool_1 (SV *cb) 2506_pool_1 (SV *cb)
1844 CODE: 2507 CODE:
1845{ 2508{
1846 struct coro *coro = SvSTATE (coro_current); 2509 struct coro *coro = SvSTATE (coro_current);
1847 HV *hv = (HV *)SvRV (coro_current); 2510 HV *hv = (HV *)SvRV (coro_current);
1848 AV *defav = GvAV (PL_defgv); 2511 AV *defav = GvAV (PL_defgv);
1849 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0); 2512 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1850 AV *invoke_av; 2513 AV *invoke_av;
1851 int i, len; 2514 int i, len;
1852 2515
1853 if (!invoke) 2516 if (!invoke)
2517 {
2518 SV *old = PL_diehook;
2519 PL_diehook = 0;
2520 SvREFCNT_dec (old);
1854 croak ("\3async_pool terminate\2\n"); 2521 croak ("\3async_pool terminate\2\n");
2522 }
1855 2523
1856 SvREFCNT_dec (coro->saved_deffh); 2524 SvREFCNT_dec (coro->saved_deffh);
1857 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2525 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1858 2526
1859 hv_store (hv, "desc", sizeof ("desc") - 1, 2527 hv_store (hv, "desc", sizeof ("desc") - 1,
1860 newSVpvn (strpair ("[async_pool]")), 0); 2528 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1861 2529
1862 invoke_av = (AV *)SvRV (invoke); 2530 invoke_av = (AV *)SvRV (invoke);
1863 len = av_len (invoke_av); 2531 len = av_len (invoke_av);
1864 2532
1865 sv_setsv (cb, AvARRAY (invoke_av)[0]); 2533 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1866 2534
1867 if (len > 0) 2535 if (len > 0)
1868 { 2536 {
1869 av_fill (defav, len - 1); 2537 av_fill (defav, len - 1);
1870 for (i = 0; i < len; ++i) 2538 for (i = 0; i < len; ++i)
1871 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2539 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1872 } 2540 }
1873
1874 SvREFCNT_dec (invoke);
1875} 2541}
1876 2542
1877void 2543void
1878_pool_2 (SV *cb) 2544_pool_2 (SV *cb)
1879 CODE: 2545 CODE:
… …
1883 sv_setsv (cb, &PL_sv_undef); 2549 sv_setsv (cb, &PL_sv_undef);
1884 2550
1885 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2551 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1886 coro->saved_deffh = 0; 2552 coro->saved_deffh = 0;
1887 2553
1888 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2554 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1889 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2555 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2556 {
2557 SV *old = PL_diehook;
2558 PL_diehook = 0;
2559 SvREFCNT_dec (old);
1890 croak ("\3async_pool terminate\2\n"); 2560 croak ("\3async_pool terminate\2\n");
2561 }
1891 2562
1892 av_clear (GvAV (PL_defgv)); 2563 av_clear (GvAV (PL_defgv));
1893 hv_store ((HV *)SvRV (coro_current), strpair ("desc"), 2564 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1894 newSVpvn (strpair ("[async_pool idle]")), 0); 2565 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1895 2566
1896 coro->prio = 0; 2567 coro->prio = 0;
1897 2568
1898 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2569 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1899 api_trace (coro_current, 0); 2570 api_trace (aTHX_ coro_current, 0);
1900 2571
1901 av_push (av_async_pool, newSVsv (coro_current)); 2572 av_push (av_async_pool, newSVsv (coro_current));
1902} 2573}
1903 2574
1904 2575
1905MODULE = Coro::State PACKAGE = Coro::AIO 2576MODULE = Coro::State PACKAGE = Coro::AIO
1906 2577
1907SV * 2578void
1908_get_state () 2579_get_state (SV *self)
2580 PROTOTYPE: $
1909 CODE: 2581 PPCODE:
1910{ 2582{
1911 struct io_state *data; 2583 AV *defav = GvAV (PL_defgv);
1912 2584 AV *av = newAV ();
2585 int i;
1913 RETVAL = newSV (sizeof (struct io_state)); 2586 SV *data_sv = newSV (sizeof (struct io_state));
1914 data = (struct io_state *)SvPVX (RETVAL); 2587 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1915 SvCUR_set (RETVAL, sizeof (struct io_state)); 2588 SvCUR_set (data_sv, sizeof (struct io_state));
1916 SvPOK_only (RETVAL); 2589 SvPOK_only (data_sv);
1917 2590
1918 data->errorno = errno; 2591 data->errorno = errno;
1919 data->laststype = PL_laststype; 2592 data->laststype = PL_laststype;
1920 data->laststatval = PL_laststatval; 2593 data->laststatval = PL_laststatval;
1921 data->statcache = PL_statcache; 2594 data->statcache = PL_statcache;
2595
2596 av_extend (av, AvFILLp (defav) + 1 + 1);
2597
2598 for (i = 0; i <= AvFILLp (defav); ++i)
2599 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2600
2601 av_push (av, data_sv);
2602
2603 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2604
2605 api_ready (aTHX_ self);
1922} 2606}
1923 OUTPUT:
1924 RETVAL
1925 2607
1926void 2608void
1927_set_state (char *data_) 2609_set_state (SV *state)
1928 PROTOTYPE: $ 2610 PROTOTYPE: $
1929 CODE: 2611 PPCODE:
1930{ 2612{
1931 struct io_state *data = (void *)data_; 2613 AV *av = (AV *)SvRV (state);
2614 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2615 int i;
1932 2616
1933 errno = data->errorno; 2617 errno = data->errorno;
1934 PL_laststype = data->laststype; 2618 PL_laststype = data->laststype;
1935 PL_laststatval = data->laststatval; 2619 PL_laststatval = data->laststatval;
1936 PL_statcache = data->statcache; 2620 PL_statcache = data->statcache;
1937}
1938 2621
2622 EXTEND (SP, AvFILLp (av));
2623 for (i = 0; i < AvFILLp (av); ++i)
2624 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2625}
2626
2627
2628MODULE = Coro::State PACKAGE = Coro::AnyEvent
2629
2630BOOT:
2631 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2632
2633void
2634_schedule (...)
2635 CODE:
2636{
2637 static int incede;
2638
2639 api_cede_notself (aTHX);
2640
2641 ++incede;
2642 while (coro_nready >= incede && api_cede (aTHX))
2643 ;
2644
2645 sv_setsv (sv_activity, &PL_sv_undef);
2646 if (coro_nready >= incede)
2647 {
2648 PUSHMARK (SP);
2649 PUTBACK;
2650 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2651 SPAGAIN;
2652 }
2653
2654 --incede;
2655}
2656
2657
2658MODULE = Coro::State PACKAGE = PerlIO::cede
2659
2660BOOT:
2661 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2662
2663MODULE = Coro::State PACKAGE = Coro::Semaphore
2664
2665SV *
2666new (SV *klass, SV *count_ = 0)
2667 CODE:
2668{
2669 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2670 AV *av = newAV ();
2671 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2672 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2673}
2674 OUTPUT:
2675 RETVAL
2676
2677SV *
2678count (SV *self)
2679 CODE:
2680 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2681 OUTPUT:
2682 RETVAL
2683
2684void
2685up (SV *self, int adjust = 1)
2686 ALIAS:
2687 adjust = 1
2688 CODE:
2689 coro_semaphore_adjust ((AV *)SvRV (self), ix ? adjust : 1);
2690
2691void
2692down (SV *self)
2693 CODE:
2694 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
2695
2696void
2697try (SV *self)
2698 PPCODE:
2699{
2700 AV *av = (AV *)SvRV (self);
2701 SV *count_sv = AvARRAY (av)[0];
2702 IV count = SvIVX (count_sv);
2703
2704 if (count > 0)
2705 {
2706 --count;
2707 SvIVX (count_sv) = count;
2708 XSRETURN_YES;
2709 }
2710 else
2711 XSRETURN_NO;
2712}
2713
2714void
2715waiters (SV *self)
2716 CODE:
2717{
2718 AV *av = (AV *)SvRV (self);
2719
2720 if (GIMME_V == G_SCALAR)
2721 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2722 else
2723 {
2724 int i;
2725 EXTEND (SP, AvFILLp (av) + 1 - 1);
2726 for (i = 1; i <= AvFILLp (av); ++i)
2727 PUSHs (newSVsv (AvARRAY (av)[i]));
2728 }
2729}
2730

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