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Comparing Coro/Coro/State.xs (file contents):
Revision 1.165 by root, Wed Sep 26 19:26:48 2007 UTC vs.
Revision 1.266 by root, Fri Nov 14 03:26:22 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
75/* 5.8.7 */ 101/* 5.8.7 */
76#ifndef SvRV_set 102#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 104#endif
79 105
… …
97 123
98#define IN_DESTRUCT (PL_main_cv == Nullcv) 124#define IN_DESTRUCT (PL_main_cv == Nullcv)
99 125
100#if __GNUC__ >= 3 126#if __GNUC__ >= 3
101# define attribute(x) __attribute__(x) 127# define attribute(x) __attribute__(x)
102# define BARRIER __asm__ __volatile__ ("" : : : "memory") 128# define expect(expr,value) __builtin_expect ((expr),(value))
129# define INLINE static inline
103#else 130#else
104# define attribute(x) 131# define attribute(x)
105# define BARRIER 132# define expect(expr,value) (expr)
133# define INLINE static
106#endif 134#endif
135
136#define expect_false(expr) expect ((expr) != 0, 0)
137#define expect_true(expr) expect ((expr) != 0, 1)
107 138
108#define NOINLINE attribute ((noinline)) 139#define NOINLINE attribute ((noinline))
109 140
110#include "CoroAPI.h" 141#include "CoroAPI.h"
111 142
112#ifdef USE_ITHREADS 143#ifdef USE_ITHREADS
144
113static perl_mutex coro_mutex; 145static perl_mutex coro_lock;
114# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
115# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD
149static void *coro_thx;
150# endif
151
116#else 152#else
153
117# define LOCK (void)0 154# define LOCK (void)0
118# define UNLOCK (void)0 155# define UNLOCK (void)0
156
119#endif 157#endif
158
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
120 163
121/* helper storage struct for Coro::AIO */ 164/* helper storage struct for Coro::AIO */
122struct io_state 165struct io_state
123{ 166{
167 AV *res;
124 int errorno; 168 int errorno;
125 I32 laststype; 169 I32 laststype; /* U16 in 5.10.0 */
126 int laststatval; 170 int laststatval;
127 Stat_t statcache; 171 Stat_t statcache;
128}; 172};
129 173
174static double (*nvtime)(); /* so why doesn't it take void? */
175
176static U32 cctx_gen;
130static size_t coro_stacksize = CORO_STACKSIZE; 177static size_t cctx_stacksize = CORO_STACKSIZE;
131static struct CoroAPI coroapi; 178static struct CoroAPI coroapi;
132static AV *main_mainstack; /* used to differentiate between $main and others */ 179static AV *main_mainstack; /* used to differentiate between $main and others */
133static JMPENV *main_top_env; 180static JMPENV *main_top_env;
134static HV *coro_state_stash, *coro_stash; 181static HV *coro_state_stash, *coro_stash;
135static SV *coro_mortal; /* will be freed after next transfer */ 182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184
185struct transfer_args
186{
187 struct coro *prev, *next;
188};
189
190static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook;
193static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */
136 195
137/* async_pool helper stuff */ 196/* async_pool helper stuff */
138static SV *sv_pool_rss; 197static SV *sv_pool_rss;
139static SV *sv_pool_size; 198static SV *sv_pool_size;
140static AV *av_async_pool; 199static AV *av_async_pool;
141 200
201/* Coro::AnyEvent */
202static SV *sv_activity;
203
142static struct coro_cctx *cctx_first; 204static struct coro_cctx *cctx_first;
143static int cctx_count, cctx_idle; 205static int cctx_count, cctx_idle;
144 206
145enum { 207enum {
146 CC_MAPPED = 0x01, 208 CC_MAPPED = 0x01,
147 CC_TRACE = 0x02,
148 CC_NOREUSE = 0x04, /* throw this away after tracing */ 209 CC_NOREUSE = 0x02, /* throw this away after tracing */
210 CC_TRACE = 0x04,
211 CC_TRACE_SUB = 0x08, /* trace sub calls */
212 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
149}; 214};
150 215
151/* this is a structure representing a c-level coroutine */ 216/* this is a structure representing a c-level coroutine */
152typedef struct coro_cctx { 217typedef struct coro_cctx {
153 struct coro_cctx *next; 218 struct coro_cctx *next;
… …
160 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 225 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
161 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 226 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
162 JMPENV *top_env; 227 JMPENV *top_env;
163 coro_context cctx; 228 coro_context cctx;
164 229
230 U32 gen;
165#if CORO_USE_VALGRIND 231#if CORO_USE_VALGRIND
166 int valgrind_id; 232 int valgrind_id;
167#endif 233#endif
168 unsigned char flags; 234 unsigned char flags;
169} coro_cctx; 235} coro_cctx;
… …
173 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
174 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
175 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
176}; 242};
177 243
244/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct {
246 SV *defsv;
247 AV *defav;
248 SV *errsv;
249 SV *irsgv;
250#define VAR(name,type) type name;
251# include "state.h"
252#undef VAR
253} perl_slots;
254
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256
178/* this is a structure representing a perl-level coroutine */ 257/* this is a structure representing a perl-level coroutine */
179struct coro { 258struct coro {
180 /* the c coroutine allocated to this perl coroutine, if any */ 259 /* the c coroutine allocated to this perl coroutine, if any */
181 coro_cctx *cctx; 260 coro_cctx *cctx;
182 261
262 /* process data */
263 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */
265
183 /* data associated with this coroutine (initial args) */ 266 AV *args; /* data associated with this coroutine (initial args) */
184 AV *args; 267 int refcnt; /* coroutines are refcounted, yes */
185 int refcnt;
186 int save; /* CORO_SAVE flags */
187 int flags; /* CF_ flags */ 268 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */
188 270
189 /* optionally saved, might be zero */ 271 /* statistics */
190 AV *defav; /* @_ */ 272 int usecount; /* number of transfers to this coro */
191 SV *defsv; /* $_ */
192 SV *errsv; /* $@ */
193 GV *deffh; /* default filehandle */
194 SV *irssv; /* $/ */
195 SV *irssv_sv; /* real $/ cache */
196
197#define VAR(name,type) type name;
198# include "state.h"
199#undef VAR
200 273
201 /* coro process data */ 274 /* coro process data */
202 int prio; 275 int prio;
276 SV *throw; /* exception to be thrown */
277
278 /* async_pool */
279 SV *saved_deffh;
203 280
204 /* linked list */ 281 /* linked list */
205 struct coro *next, *prev; 282 struct coro *next, *prev;
206 HV *hv; /* the perl hash associated with this coro, if any */
207}; 283};
208 284
209typedef struct coro *Coro__State; 285typedef struct coro *Coro__State;
210typedef struct coro *Coro__State_or_hashref; 286typedef struct coro *Coro__State_or_hashref;
211 287
… …
218#define PRIO_IDLE -3 294#define PRIO_IDLE -3
219#define PRIO_MIN -4 295#define PRIO_MIN -4
220 296
221/* for Coro.pm */ 297/* for Coro.pm */
222static SV *coro_current; 298static SV *coro_current;
299static SV *coro_readyhook;
223static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
224static int coro_nready; 301static int coro_nready;
225static struct coro *coro_first; 302static struct coro *coro_first;
226 303
227/** lowlevel stuff **********************************************************/ 304/** lowlevel stuff **********************************************************/
228 305
306static SV *
307coro_get_sv (pTHX_ const char *name, int create)
308{
309#if PERL_VERSION_ATLEAST (5,10,0)
310 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
311 get_sv (name, create);
312#endif
313 return get_sv (name, create);
314}
315
316static AV *
317coro_get_av (pTHX_ const char *name, int create)
318{
319#if PERL_VERSION_ATLEAST (5,10,0)
320 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
321 get_av (name, create);
322#endif
323 return get_av (name, create);
324}
325
326static HV *
327coro_get_hv (pTHX_ const char *name, int create)
328{
329#if PERL_VERSION_ATLEAST (5,10,0)
330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
331 get_hv (name, create);
332#endif
333 return get_hv (name, create);
334}
335
229static AV * 336static AV *
230coro_clone_padlist (pTHX_ CV *cv) 337coro_clone_padlist (pTHX_ CV *cv)
231{ 338{
232 AV *padlist = CvPADLIST (cv); 339 AV *padlist = CvPADLIST (cv);
233 AV *newpadlist, *newpad; 340 AV *newpadlist, *newpad;
234 341
235 newpadlist = newAV (); 342 newpadlist = newAV ();
236 AvREAL_off (newpadlist); 343 AvREAL_off (newpadlist);
237#if PERL_VERSION_ATLEAST (5,9,0) 344#if PERL_VERSION_ATLEAST (5,10,0)
238 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 345 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
239#else 346#else
240 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
241#endif 348#endif
242 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 349 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
243 --AvFILLp (padlist); 350 --AvFILLp (padlist);
244 351
245 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 352 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
246 av_store (newpadlist, 1, (SV *)newpad); 353 av_store (newpadlist, 1, (SV *)newpad);
247 354
248 return newpadlist; 355 return newpadlist;
249} 356}
250 357
… …
280 387
281 /* casting is fun. */ 388 /* casting is fun. */
282 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 389 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
283 free_padlist (aTHX_ padlist); 390 free_padlist (aTHX_ padlist);
284 391
285 SvREFCNT_dec (av); 392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
286 393
287 return 0; 394 return 0;
288} 395}
289 396
290#define PERL_MAGIC_coro PERL_MAGIC_ext 397#define CORO_MAGIC_type_cv PERL_MAGIC_ext
398#define CORO_MAGIC_type_state PERL_MAGIC_ext
291 399
292static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 400static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0,
402 coro_cv_free
403};
293 404
294#define CORO_MAGIC(cv) \ 405#define CORO_MAGIC(sv, type) \
295 SvMAGIC (cv) \ 406 SvMAGIC (sv) \
296 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 407 ? SvMAGIC (sv)->mg_type == type \
297 ? SvMAGIC (cv) \ 408 ? SvMAGIC (sv) \
298 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 409 : mg_find (sv, type) \
299 : 0 410 : 0
411
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
414
415INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro)
417{
418 HV *stash;
419 MAGIC *mg;
420
421 if (SvROK (coro))
422 coro = SvRV (coro);
423
424 if (expect_false (SvTYPE (coro) != SVt_PVHV))
425 croak ("Coro::State object required");
426
427 stash = SvSTASH (coro);
428 if (expect_false (stash != coro_stash && stash != coro_state_stash))
429 {
430 /* very slow, but rare, check */
431 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
432 croak ("Coro::State object required");
433 }
434
435 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr;
437}
438
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
300 440
301/* the next two functions merely cache the padlists */ 441/* the next two functions merely cache the padlists */
302static void 442static void
303get_padlist (pTHX_ CV *cv) 443get_padlist (pTHX_ CV *cv)
304{ 444{
305 MAGIC *mg = CORO_MAGIC (cv); 445 MAGIC *mg = CORO_MAGIC_cv (cv);
306 AV *av; 446 AV *av;
307 447
308 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 448 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
309 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 449 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
310 else 450 else
311 { 451 {
312#if CORO_PREFER_PERL_FUNCTIONS 452#if CORO_PREFER_PERL_FUNCTIONS
313 /* this is probably cleaner, but also slower? */ 453 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */
314 CV *cp = Perl_cv_clone (cv); 455 CV *cp = Perl_cv_clone (cv);
315 CvPADLIST (cv) = CvPADLIST (cp); 456 CvPADLIST (cv) = CvPADLIST (cp);
316 CvPADLIST (cp) = 0; 457 CvPADLIST (cp) = 0;
317 SvREFCNT_dec (cp); 458 SvREFCNT_dec (cp);
318#else 459#else
… …
322} 463}
323 464
324static void 465static void
325put_padlist (pTHX_ CV *cv) 466put_padlist (pTHX_ CV *cv)
326{ 467{
327 MAGIC *mg = CORO_MAGIC (cv); 468 MAGIC *mg = CORO_MAGIC_cv (cv);
328 AV *av; 469 AV *av;
329 470
330 if (!mg) 471 if (expect_false (!mg))
331 { 472 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
332 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
333 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
334 mg->mg_virtual = &vtbl_coro;
335 mg->mg_obj = (SV *)newAV ();
336 }
337 473
338 av = (AV *)mg->mg_obj; 474 av = (AV *)mg->mg_obj;
339 475
340 if (AvFILLp (av) >= AvMAX (av)) 476 if (expect_false (AvFILLp (av) >= AvMAX (av)))
341 av_extend (av, AvMAX (av) + 1); 477 av_extend (av, AvMAX (av) + 1);
342 478
343 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 479 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
344} 480}
345 481
346/** load & save, init *******************************************************/ 482/** load & save, init *******************************************************/
347
348#define SB do {
349#define SE } while (0)
350
351#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
352 483
353static void 484static void
354load_perl (pTHX_ Coro__State c) 485load_perl (pTHX_ Coro__State c)
355{ 486{
487 perl_slots *slot = c->slot;
488 c->slot = 0;
489
490 PL_mainstack = c->mainstack;
491
492 GvSV (PL_defgv) = slot->defsv;
493 GvAV (PL_defgv) = slot->defav;
494 GvSV (PL_errgv) = slot->errsv;
495 GvSV (irsgv) = slot->irsgv;
496
356#define VAR(name,type) PL_ ## name = c->name; 497 #define VAR(name,type) PL_ ## name = slot->name;
357# include "state.h" 498 # include "state.h"
358#undef VAR 499 #undef VAR
359
360 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
361 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
362 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
363 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
364
365 if (c->irssv)
366 {
367 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
368 {
369 SvREFCNT_dec (c->irssv);
370 c->irssv = 0;
371 }
372 else
373 {
374 REPLACE_SV (PL_rs, c->irssv);
375 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
376 sv_setsv (c->irssv_sv, PL_rs);
377 }
378 }
379 500
380 { 501 {
381 dSP; 502 dSP;
503
382 CV *cv; 504 CV *cv;
383 505
384 /* now do the ugly restore mess */ 506 /* now do the ugly restore mess */
385 while ((cv = (CV *)POPs)) 507 while (expect_true (cv = (CV *)POPs))
386 { 508 {
387 put_padlist (aTHX_ cv); /* mark this padlist as available */ 509 put_padlist (aTHX_ cv); /* mark this padlist as available */
388 CvDEPTH (cv) = PTR2IV (POPs); 510 CvDEPTH (cv) = PTR2IV (POPs);
389 CvPADLIST (cv) = (AV *)POPs; 511 CvPADLIST (cv) = (AV *)POPs;
390 } 512 }
… …
409 531
410 XPUSHs (Nullsv); 532 XPUSHs (Nullsv);
411 /* this loop was inspired by pp_caller */ 533 /* this loop was inspired by pp_caller */
412 for (;;) 534 for (;;)
413 { 535 {
414 while (cxix >= 0) 536 while (expect_true (cxix >= 0))
415 { 537 {
416 PERL_CONTEXT *cx = &ccstk[cxix--]; 538 PERL_CONTEXT *cx = &ccstk[cxix--];
417 539
418 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 540 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
419 { 541 {
420 CV *cv = cx->blk_sub.cv; 542 CV *cv = cx->blk_sub.cv;
421 543
422 if (CvDEPTH (cv)) 544 if (expect_true (CvDEPTH (cv)))
423 { 545 {
424 EXTEND (SP, 3); 546 EXTEND (SP, 3);
425 PUSHs ((SV *)CvPADLIST (cv)); 547 PUSHs ((SV *)CvPADLIST (cv));
426 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 548 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
427 PUSHs ((SV *)cv); 549 PUSHs ((SV *)cv);
428 550
429 CvDEPTH (cv) = 0; 551 CvDEPTH (cv) = 0;
430 get_padlist (aTHX_ cv); 552 get_padlist (aTHX_ cv);
431 } 553 }
432 } 554 }
433 } 555 }
434 556
435 if (top_si->si_type == PERLSI_MAIN) 557 if (expect_true (top_si->si_type == PERLSI_MAIN))
436 break; 558 break;
437 559
438 top_si = top_si->si_prev; 560 top_si = top_si->si_prev;
439 ccstk = top_si->si_cxstack; 561 ccstk = top_si->si_cxstack;
440 cxix = top_si->si_cxix; 562 cxix = top_si->si_cxix;
441 } 563 }
442 564
443 PUTBACK; 565 PUTBACK;
444 } 566 }
445 567
446 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 568 /* allocate some space on the context stack for our purposes */
447 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 569 /* we manually unroll here, as usually 2 slots is enough */
448 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 570 if (SLOT_COUNT >= 1) CXINC;
449 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 571 if (SLOT_COUNT >= 2) CXINC;
450 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 572 if (SLOT_COUNT >= 3) CXINC;
573 {
574 int i;
575 for (i = 3; i < SLOT_COUNT; ++i)
576 CXINC;
577 }
578 cxstack_ix -= SLOT_COUNT; /* undo allocation */
451 579
580 c->mainstack = PL_mainstack;
581
582 {
583 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
584
585 slot->defav = GvAV (PL_defgv);
586 slot->defsv = DEFSV;
587 slot->errsv = ERRSV;
588 slot->irsgv = GvSV (irsgv);
589
452#define VAR(name,type)c->name = PL_ ## name; 590 #define VAR(name,type) slot->name = PL_ ## name;
453# include "state.h" 591 # include "state.h"
454#undef VAR 592 #undef VAR
593 }
455} 594}
456 595
457/* 596/*
458 * allocate various perl stacks. This is an exact copy 597 * allocate various perl stacks. This is an exact copy
459 * of perl.c:init_stacks, except that it uses less memory 598 * of perl.c:init_stacks, except that it uses less memory
… …
464# define coro_init_stacks init_stacks 603# define coro_init_stacks init_stacks
465#else 604#else
466static void 605static void
467coro_init_stacks (pTHX) 606coro_init_stacks (pTHX)
468{ 607{
469 PL_curstackinfo = new_stackinfo(64, 6); 608 PL_curstackinfo = new_stackinfo(32, 8);
470 PL_curstackinfo->si_type = PERLSI_MAIN; 609 PL_curstackinfo->si_type = PERLSI_MAIN;
471 PL_curstack = PL_curstackinfo->si_stack; 610 PL_curstack = PL_curstackinfo->si_stack;
472 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 611 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473 612
474 PL_stack_base = AvARRAY(PL_curstack); 613 PL_stack_base = AvARRAY(PL_curstack);
475 PL_stack_sp = PL_stack_base; 614 PL_stack_sp = PL_stack_base;
476 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 615 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
477 616
478 New(50,PL_tmps_stack,64,SV*); 617 New(50,PL_tmps_stack,32,SV*);
479 PL_tmps_floor = -1; 618 PL_tmps_floor = -1;
480 PL_tmps_ix = -1; 619 PL_tmps_ix = -1;
481 PL_tmps_max = 64; 620 PL_tmps_max = 32;
482 621
483 New(54,PL_markstack,16,I32); 622 New(54,PL_markstack,16,I32);
484 PL_markstack_ptr = PL_markstack; 623 PL_markstack_ptr = PL_markstack;
485 PL_markstack_max = PL_markstack + 16; 624 PL_markstack_max = PL_markstack + 16;
486 625
487#ifdef SET_MARK_OFFSET 626#ifdef SET_MARK_OFFSET
488 SET_MARK_OFFSET; 627 SET_MARK_OFFSET;
489#endif 628#endif
490 629
491 New(54,PL_scopestack,16,I32); 630 New(54,PL_scopestack,8,I32);
492 PL_scopestack_ix = 0; 631 PL_scopestack_ix = 0;
493 PL_scopestack_max = 16; 632 PL_scopestack_max = 8;
494 633
495 New(54,PL_savestack,64,ANY); 634 New(54,PL_savestack,24,ANY);
496 PL_savestack_ix = 0; 635 PL_savestack_ix = 0;
497 PL_savestack_max = 64; 636 PL_savestack_max = 24;
498 637
499#if !PERL_VERSION_ATLEAST (5,9,0) 638#if !PERL_VERSION_ATLEAST (5,10,0)
500 New(54,PL_retstack,4,OP*); 639 New(54,PL_retstack,4,OP*);
501 PL_retstack_ix = 0; 640 PL_retstack_ix = 0;
502 PL_retstack_max = 4; 641 PL_retstack_max = 4;
503#endif 642#endif
504} 643}
… …
506 645
507/* 646/*
508 * destroy the stacks, the callchain etc... 647 * destroy the stacks, the callchain etc...
509 */ 648 */
510static void 649static void
511coro_destroy_stacks (pTHX) 650coro_destruct_stacks (pTHX)
512{ 651{
513 if (!IN_DESTRUCT)
514 {
515 /* restore all saved variables and stuff */
516 LEAVE_SCOPE (0);
517 assert (PL_tmps_floor == -1);
518
519 /* free all temporaries */
520 FREETMPS;
521 assert (PL_tmps_ix == -1);
522
523 /* unwind all extra stacks */
524 POPSTACK_TO (PL_mainstack);
525
526 /* unwind main stack */
527 dounwind (-1);
528 }
529
530 while (PL_curstackinfo->si_next) 652 while (PL_curstackinfo->si_next)
531 PL_curstackinfo = PL_curstackinfo->si_next; 653 PL_curstackinfo = PL_curstackinfo->si_next;
532 654
533 while (PL_curstackinfo) 655 while (PL_curstackinfo)
534 { 656 {
… …
544 666
545 Safefree (PL_tmps_stack); 667 Safefree (PL_tmps_stack);
546 Safefree (PL_markstack); 668 Safefree (PL_markstack);
547 Safefree (PL_scopestack); 669 Safefree (PL_scopestack);
548 Safefree (PL_savestack); 670 Safefree (PL_savestack);
549#if !PERL_VERSION_ATLEAST (5,9,0) 671#if !PERL_VERSION_ATLEAST (5,10,0)
550 Safefree (PL_retstack); 672 Safefree (PL_retstack);
551#endif 673#endif
552} 674}
553 675
554static size_t 676static size_t
555coro_rss (struct coro *coro) 677coro_rss (pTHX_ struct coro *coro)
556{ 678{
557 size_t rss = sizeof (coro); 679 size_t rss = sizeof (*coro);
558 680
559 if (coro->mainstack) 681 if (coro->mainstack)
560 { 682 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
561 if (coro->flags & CF_RUNNING) 686 if (coro->flags & CF_RUNNING)
562 { 687 {
688 slot = &tmp_slot;
689
563 #define VAR(name,type)coro->name = PL_ ## name; 690 #define VAR(name,type) slot->name = PL_ ## name;
564 # include "state.h" 691 # include "state.h"
565 #undef VAR 692 #undef VAR
566 } 693 }
694 else
695 slot = coro->slot;
567 696
697 if (slot)
698 {
568 rss += sizeof (coro->curstackinfo); 699 rss += sizeof (slot->curstackinfo);
569 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
570 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
571 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
572 rss += coro->tmps_max * sizeof (SV *); 702 rss += slot->tmps_max * sizeof (SV *);
573 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); 703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
574 rss += coro->scopestack_max * sizeof (I32); 704 rss += slot->scopestack_max * sizeof (I32);
575 rss += coro->savestack_max * sizeof (ANY); 705 rss += slot->savestack_max * sizeof (ANY);
576 706
577#if !PERL_VERSION_ATLEAST (5,9,0) 707#if !PERL_VERSION_ATLEAST (5,10,0)
578 rss += coro->retstack_max * sizeof (OP *); 708 rss += slot->retstack_max * sizeof (OP *);
579#endif 709#endif
710 }
580 } 711 }
581 712
582 return rss; 713 return rss;
583} 714}
584 715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we somtimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 SV **bot = SP;
728
729 int gimme = GIMME_V;
730
731 /* make sure we put something on the stack in scalar context */
732 if (gimme == G_SCALAR)
733 {
734 if (sp == bot)
735 XPUSHs (&PL_sv_undef);
736
737 SP = bot + 1;
738 }
739
740 PUTBACK;
741}
742
585/** coroutine stack handling ************************************************/ 743/** coroutine stack handling ************************************************/
586 744
745static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
746static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
747static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
748
749/* apparently < 5.8.8 */
750#ifndef MgPV_nolen_const
751#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
752 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
753 (const char*)(mg)->mg_ptr)
754#endif
755
756/*
757 * This overrides the default magic get method of %SIG elements.
758 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
759 * and instead of tryign to save and restore the hash elements, we just provide
760 * readback here.
761 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
762 * not expecting this to actually change the hook. This is a potential problem
763 * when a schedule happens then, but we ignore this.
764 */
765static int
766coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
767{
768 const char *s = MgPV_nolen_const (mg);
769
770 if (*s == '_')
771 {
772 SV **svp = 0;
773
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776
777 if (svp)
778 {
779 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
780 return 0;
781 }
782 }
783
784 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
785}
786
787static int
788coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
789{
790 const char *s = MgPV_nolen_const (mg);
791
792 if (*s == '_')
793 {
794 SV **svp = 0;
795
796 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
797 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
798
799 if (svp)
800 {
801 SV *old = *svp;
802 *svp = 0;
803 SvREFCNT_dec (old);
804 return 0;
805 }
806 }
807
808 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
809}
810
811static int
812coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
813{
814 const char *s = MgPV_nolen_const (mg);
815
816 if (*s == '_')
817 {
818 SV **svp = 0;
819
820 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
821 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
822
823 if (svp)
824 {
825 SV *old = *svp;
826 *svp = newSVsv (sv);
827 SvREFCNT_dec (old);
828 return 0;
829 }
830 }
831
832 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
833}
834
587static void 835static void
588setup_coro (pTHX_ struct coro *coro) 836coro_setup (pTHX_ struct coro *coro)
589{ 837{
590 /* 838 /*
591 * emulate part of the perl startup here. 839 * emulate part of the perl startup here.
592 */ 840 */
593 coro_init_stacks (aTHX); 841 coro_init_stacks (aTHX);
594 842
843 PL_runops = RUNOPS_DEFAULT;
595 PL_curcop = &PL_compiling; 844 PL_curcop = &PL_compiling;
596 PL_in_eval = EVAL_NULL; 845 PL_in_eval = EVAL_NULL;
597 PL_comppad = 0; 846 PL_comppad = 0;
598 PL_curpm = 0; 847 PL_curpm = 0;
848 PL_curpad = 0;
599 PL_localizing = 0; 849 PL_localizing = 0;
600 PL_dirty = 0; 850 PL_dirty = 0;
601 PL_restartop = 0; 851 PL_restartop = 0;
852#if PERL_VERSION_ATLEAST (5,10,0)
853 PL_parser = 0;
854#endif
855
856 /* recreate the die/warn hooks */
857 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
858 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
859
860 GvSV (PL_defgv) = newSV (0);
861 GvAV (PL_defgv) = coro->args; coro->args = 0;
862 GvSV (PL_errgv) = newSV (0);
863 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
864 PL_rs = newSVsv (GvSV (irsgv));
865 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
602 866
603 { 867 {
604 dSP; 868 dSP;
605 LOGOP myop; 869 UNOP myop;
606 870
607 SvREFCNT_dec (GvAV (PL_defgv));
608 GvAV (PL_defgv) = coro->args; coro->args = 0;
609
610 Zero (&myop, 1, LOGOP); 871 Zero (&myop, 1, UNOP);
611 myop.op_next = Nullop; 872 myop.op_next = Nullop;
612 myop.op_flags = OPf_WANT_VOID; 873 myop.op_flags = OPf_WANT_VOID;
613 874
614 PUSHMARK (SP); 875 PUSHMARK (SP);
615 XPUSHs (av_shift (GvAV (PL_defgv))); 876 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
616 PUTBACK; 877 PUTBACK;
617 PL_op = (OP *)&myop; 878 PL_op = (OP *)&myop;
618 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 879 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
619 SPAGAIN; 880 SPAGAIN;
620 } 881 }
621 882
622 ENTER; /* necessary e.g. for dounwind */ 883 /* this newly created coroutine might be run on an existing cctx which most
884 * likely was suspended in set_stacklevel, called from pp_set_stacklevel,
885 * so we have to emulate entering pp_set_stacklevel here.
886 */
887 SSL_HEAD;
623} 888}
624 889
625static void 890static void
891coro_destruct (pTHX_ struct coro *coro)
892{
893 if (!IN_DESTRUCT)
894 {
895 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0);
897 assert (PL_tmps_floor == -1);
898
899 /* free all temporaries */
900 FREETMPS;
901 assert (PL_tmps_ix == -1);
902
903 /* unwind all extra stacks */
904 POPSTACK_TO (PL_mainstack);
905
906 /* unwind main stack */
907 dounwind (-1);
908 }
909
910 SvREFCNT_dec (GvSV (PL_defgv));
911 SvREFCNT_dec (GvAV (PL_defgv));
912 SvREFCNT_dec (GvSV (PL_errgv));
913 SvREFCNT_dec (PL_defoutgv);
914 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv));
916
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919
920 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro->throw);
922
923 coro_destruct_stacks (aTHX);
924}
925
926INLINE void
626free_coro_mortal (pTHX) 927free_coro_mortal (pTHX)
627{ 928{
628 if (coro_mortal) 929 if (expect_true (coro_mortal))
629 { 930 {
630 SvREFCNT_dec (coro_mortal); 931 SvREFCNT_dec (coro_mortal);
631 coro_mortal = 0; 932 coro_mortal = 0;
632 } 933 }
633} 934}
634 935
635static void
636do_trace (pTHX)
637{
638 if (PL_curcop != &PL_compiling)
639 {
640 runops_proc_t old_runops = PL_runops;
641 dSP;
642 ENTER;
643 SAVETMPS;
644 PUSHMARK (SP);
645 PUTBACK;
646 PL_runops = RUNOPS_DEFAULT;
647 call_pv ("Coro::_do_trace", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD | G_NOARGS);
648 PL_runops = old_runops;
649 SPAGAIN;
650 FREETMPS;
651 LEAVE;
652 PUTBACK;
653 }
654}
655
656static int 936static int
657runops_coro (pTHX) 937runops_trace (pTHX)
658{ 938{
659 COP *oldcop = 0; 939 COP *oldcop = 0;
940 int oldcxix = -2;
941 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
660 943
661 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
662 { 945 {
663 PERL_ASYNC_CHECK (); 946 PERL_ASYNC_CHECK ();
664 947
665 if (oldcop != PL_curcop) 948 if (cctx->flags & CC_TRACE_ALL)
666 { 949 {
950 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
951 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top;
954 AV *av = newAV (); /* return values */
955 SV **cb;
956 dSP;
957
958 GV *gv = CvGV (cx->blk_sub.cv);
959 SV *fullname = sv_2mortal (newSV (0));
960 if (isGV (gv))
961 gv_efullname3 (fullname, gv, 0);
962
963 bot = PL_stack_base + cx->blk_oldsp + 1;
964 top = cx->blk_gimme == G_ARRAY ? SP + 1
965 : cx->blk_gimme == G_SCALAR ? bot + 1
966 : bot;
967
968 av_extend (av, top - bot);
969 while (bot < top)
970 av_push (av, SvREFCNT_inc_NN (*bot++));
971
972 PL_runops = RUNOPS_DEFAULT;
973 ENTER;
974 SAVETMPS;
975 EXTEND (SP, 3);
976 PUSHMARK (SP);
977 PUSHs (&PL_sv_no);
978 PUSHs (fullname);
979 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
980 PUTBACK;
981 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
982 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
983 SPAGAIN;
984 FREETMPS;
985 LEAVE;
986 PL_runops = runops_trace;
987 }
988
989 if (oldcop != PL_curcop)
990 {
667 oldcop = PL_curcop; 991 oldcop = PL_curcop;
668 do_trace (aTHX); 992
993 if (PL_curcop != &PL_compiling)
994 {
995 SV **cb;
996
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
998 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0));
1007
1008 if (isGV (gv))
1009 gv_efullname3 (fullname, gv, 0);
1010
1011 PL_runops = RUNOPS_DEFAULT;
1012 ENTER;
1013 SAVETMPS;
1014 EXTEND (SP, 3);
1015 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN;
1023 FREETMPS;
1024 LEAVE;
1025 PL_runops = runops_trace;
1026 }
1027
1028 oldcxix = cxstack_ix;
1029 }
1030
1031 if (cctx->flags & CC_TRACE_LINE)
1032 {
1033 dSP;
1034
1035 PL_runops = RUNOPS_DEFAULT;
1036 ENTER;
1037 SAVETMPS;
1038 EXTEND (SP, 3);
1039 PL_runops = RUNOPS_DEFAULT;
1040 PUSHMARK (SP);
1041 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1042 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1043 PUTBACK;
1044 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1045 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1046 SPAGAIN;
1047 FREETMPS;
1048 LEAVE;
1049 PL_runops = runops_trace;
1050 }
1051 }
1052 }
669 } 1053 }
670 } 1054 }
671 1055
672 TAINT_NOT; 1056 TAINT_NOT;
673 return 0; 1057 return 0;
1058}
1059
1060static void
1061prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
1062{
1063 ta->prev = (struct coro *)cctx;
1064 ta->next = 0;
674} 1065}
675 1066
676/* inject a fake call to Coro::State::_cctx_init into the execution */ 1067/* inject a fake call to Coro::State::_cctx_init into the execution */
677/* _cctx_init should be careful, as it could be called at almost any time */ 1068/* _cctx_init should be careful, as it could be called at almost any time */
678/* during execution of a perl program */ 1069/* during execution of a perl program */
1070/* also initialises PL_top_env */
679static void NOINLINE 1071static void NOINLINE
680prepare_cctx (pTHX_ coro_cctx *cctx) 1072cctx_prepare (pTHX_ coro_cctx *cctx)
681{ 1073{
682 dSP; 1074 dSP;
683 LOGOP myop; 1075 UNOP myop;
684 1076
685 PL_top_env = &PL_start_env; 1077 PL_top_env = &PL_start_env;
686 1078
687 if (cctx->flags & CC_TRACE) 1079 if (cctx->flags & CC_TRACE)
688 PL_runops = runops_coro; 1080 PL_runops = runops_trace;
689 1081
690 Zero (&myop, 1, LOGOP); 1082 Zero (&myop, 1, UNOP);
691 myop.op_next = PL_op; 1083 myop.op_next = PL_op;
692 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1084 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
693 1085
694 PUSHMARK (SP); 1086 PUSHMARK (SP);
695 EXTEND (SP, 2); 1087 EXTEND (SP, 2);
696 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1088 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
697 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1089 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
698 PUTBACK; 1090 PUTBACK;
699 PL_op = (OP *)&myop; 1091 PL_op = (OP *)&myop;
700 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1092 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
701 SPAGAIN; 1093 SPAGAIN;
702} 1094}
703 1095
1096/* the tail of transfer: execute stuff we can only do after a transfer */
1097INLINE void
1098transfer_tail (pTHX)
1099{
1100 struct coro *next = (struct coro *)transfer_next;
1101 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1102 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1103
1104 free_coro_mortal (aTHX);
1105 UNLOCK;
1106
1107 if (expect_false (next->throw))
1108 {
1109 SV *exception = sv_2mortal (next->throw);
1110
1111 next->throw = 0;
1112 sv_setsv (ERRSV, exception);
1113 croak (0);
1114 }
1115}
1116
704/* 1117/*
705 * this is a _very_ stripped down perl interpreter ;) 1118 * this is a _very_ stripped down perl interpreter ;)
706 */ 1119 */
707static void 1120static void
708coro_run (void *arg) 1121cctx_run (void *arg)
709{ 1122{
1123#ifdef USE_ITHREADS
1124# if CORO_PTHREAD
1125 PERL_SET_CONTEXT (coro_thx);
1126# endif
1127#endif
1128 {
710 dTHX; 1129 dTHX;
711 1130
712 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1131 /* we are the alternative tail to pp_set_stacklevel */
713 UNLOCK; 1132 /* so do the same things here */
1133 SSL_TAIL;
714 1134
715 /* we now skip the entersub that lead to transfer() */ 1135 /* we now skip the op that did lead to transfer() */
716 PL_op = PL_op->op_next; 1136 PL_op = PL_op->op_next;
717 1137
718 /* inject a fake subroutine call to cctx_init */ 1138 /* inject a fake subroutine call to cctx_init */
719 prepare_cctx (aTHX_ (coro_cctx *)arg); 1139 cctx_prepare (aTHX_ (coro_cctx *)arg);
720 1140
1141 /* cctx_run is the alternative tail of transfer() */
1142 transfer_tail (aTHX);
1143
721 /* somebody or something will hit me for both perl_run and PL_restartop */ 1144 /* somebody or something will hit me for both perl_run and PL_restartop */
722 PL_restartop = PL_op; 1145 PL_restartop = PL_op;
723 perl_run (PL_curinterp); 1146 perl_run (PL_curinterp);
724 1147
725 /* 1148 /*
726 * If perl-run returns we assume exit() was being called or the coro 1149 * If perl-run returns we assume exit() was being called or the coro
727 * fell off the end, which seems to be the only valid (non-bug) 1150 * fell off the end, which seems to be the only valid (non-bug)
728 * reason for perl_run to return. We try to exit by jumping to the 1151 * reason for perl_run to return. We try to exit by jumping to the
729 * bootstrap-time "top" top_env, as we cannot restore the "main" 1152 * bootstrap-time "top" top_env, as we cannot restore the "main"
730 * coroutine as Coro has no such concept 1153 * coroutine as Coro has no such concept
731 */ 1154 */
732 PL_top_env = main_top_env; 1155 PL_top_env = main_top_env;
733 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1156 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1157 }
734} 1158}
735 1159
736static coro_cctx * 1160static coro_cctx *
737cctx_new () 1161cctx_new ()
738{ 1162{
739 coro_cctx *cctx; 1163 coro_cctx *cctx;
1164
1165 ++cctx_count;
1166 New (0, cctx, 1, coro_cctx);
1167
1168 cctx->gen = cctx_gen;
1169 cctx->flags = 0;
1170 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1171
1172 return cctx;
1173}
1174
1175/* create a new cctx only suitable as source */
1176static coro_cctx *
1177cctx_new_empty ()
1178{
1179 coro_cctx *cctx = cctx_new ();
1180
1181 cctx->sptr = 0;
1182 coro_create (&cctx->cctx, 0, 0, 0, 0);
1183
1184 return cctx;
1185}
1186
1187/* create a new cctx suitable as destination/running a perl interpreter */
1188static coro_cctx *
1189cctx_new_run ()
1190{
1191 coro_cctx *cctx = cctx_new ();
740 void *stack_start; 1192 void *stack_start;
741 size_t stack_size; 1193 size_t stack_size;
742 1194
743 ++cctx_count;
744
745 Newz (0, cctx, 1, coro_cctx);
746
747#if HAVE_MMAP 1195#if HAVE_MMAP
748
749 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1196 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
750 /* mmap supposedly does allocate-on-write for us */ 1197 /* mmap supposedly does allocate-on-write for us */
751 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1198 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
752 1199
753 if (cctx->sptr != (void *)-1) 1200 if (cctx->sptr != (void *)-1)
754 { 1201 {
755# if CORO_STACKGUARD 1202 #if CORO_STACKGUARD
756 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1203 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
757# endif 1204 #endif
758 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1205 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
759 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1206 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
760 cctx->flags |= CC_MAPPED; 1207 cctx->flags |= CC_MAPPED;
761 } 1208 }
762 else 1209 else
763#endif 1210#endif
764 { 1211 {
765 cctx->ssize = coro_stacksize * (long)sizeof (long); 1212 cctx->ssize = cctx_stacksize * (long)sizeof (long);
766 New (0, cctx->sptr, coro_stacksize, long); 1213 New (0, cctx->sptr, cctx_stacksize, long);
767 1214
768 if (!cctx->sptr) 1215 if (!cctx->sptr)
769 { 1216 {
770 perror ("FATAL: unable to allocate stack for coroutine"); 1217 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
771 _exit (EXIT_FAILURE); 1218 _exit (EXIT_FAILURE);
772 } 1219 }
773 1220
774 stack_start = cctx->sptr; 1221 stack_start = cctx->sptr;
775 stack_size = cctx->ssize; 1222 stack_size = cctx->ssize;
776 } 1223 }
777 1224
778 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1225 #if CORO_USE_VALGRIND
1226 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1227 #endif
1228
779 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1229 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
780 1230
781 return cctx; 1231 return cctx;
782} 1232}
783 1233
784static void 1234static void
… …
786{ 1236{
787 if (!cctx) 1237 if (!cctx)
788 return; 1238 return;
789 1239
790 --cctx_count; 1240 --cctx_count;
1241 coro_destroy (&cctx->cctx);
791 1242
1243 /* coro_transfer creates new, empty cctx's */
1244 if (cctx->sptr)
1245 {
792#if CORO_USE_VALGRIND 1246 #if CORO_USE_VALGRIND
793 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1247 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
794#endif 1248 #endif
795 1249
796#if HAVE_MMAP 1250#if HAVE_MMAP
797 if (cctx->flags & CC_MAPPED) 1251 if (cctx->flags & CC_MAPPED)
798 munmap (cctx->sptr, cctx->ssize); 1252 munmap (cctx->sptr, cctx->ssize);
799 else 1253 else
800#endif 1254#endif
801 Safefree (cctx->sptr); 1255 Safefree (cctx->sptr);
1256 }
802 1257
803 Safefree (cctx); 1258 Safefree (cctx);
804} 1259}
1260
1261/* wether this cctx should be destructed */
1262#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
805 1263
806static coro_cctx * 1264static coro_cctx *
807cctx_get (pTHX) 1265cctx_get (pTHX)
808{ 1266{
809 while (cctx_first) 1267 while (expect_true (cctx_first))
810 { 1268 {
811 coro_cctx *cctx = cctx_first; 1269 coro_cctx *cctx = cctx_first;
812 cctx_first = cctx->next; 1270 cctx_first = cctx->next;
813 --cctx_idle; 1271 --cctx_idle;
814 1272
815 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1273 if (expect_true (!CCTX_EXPIRED (cctx)))
816 return cctx; 1274 return cctx;
817 1275
818 cctx_destroy (cctx); 1276 cctx_destroy (cctx);
819 } 1277 }
820 1278
821 return cctx_new (); 1279 return cctx_new_run ();
822} 1280}
823 1281
824static void 1282static void
825cctx_put (coro_cctx *cctx) 1283cctx_put (coro_cctx *cctx)
826{ 1284{
1285 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1286
827 /* free another cctx if overlimit */ 1287 /* free another cctx if overlimit */
828 if (cctx_idle >= MAX_IDLE_CCTX) 1288 if (expect_false (cctx_idle >= cctx_max_idle))
829 { 1289 {
830 coro_cctx *first = cctx_first; 1290 coro_cctx *first = cctx_first;
831 cctx_first = first->next; 1291 cctx_first = first->next;
832 --cctx_idle; 1292 --cctx_idle;
833 1293
… …
839 cctx_first = cctx; 1299 cctx_first = cctx;
840} 1300}
841 1301
842/** coroutine switching *****************************************************/ 1302/** coroutine switching *****************************************************/
843 1303
844/* never call directly, always through the coro_state_transfer global variable */ 1304static void
1305transfer_check (pTHX_ struct coro *prev, struct coro *next)
1306{
1307 if (expect_true (prev != next))
1308 {
1309 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1310 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1311
1312 if (expect_false (next->flags & CF_RUNNING))
1313 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1314
1315 if (expect_false (next->flags & CF_DESTROYED))
1316 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1317
1318#if !PERL_VERSION_ATLEAST (5,10,0)
1319 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1320 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1321#endif
1322 }
1323}
1324
1325/* always use the TRANSFER macro */
845static void NOINLINE 1326static void NOINLINE
846transfer (pTHX_ struct coro *prev, struct coro *next) 1327transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
847{ 1328{
848 dSTACKLEVEL; 1329 dSTACKLEVEL;
849 1330
850 /* sometimes transfer is only called to set idle_sp */ 1331 /* sometimes transfer is only called to set idle_sp */
851 if (!next) 1332 if (expect_false (!next))
852 { 1333 {
853 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1334 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
854 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1335 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
855 } 1336 }
856 else if (prev != next) 1337 else if (expect_true (prev != next))
857 { 1338 {
858 coro_cctx *prev__cctx; 1339 coro_cctx *prev__cctx;
859 1340
860 if (prev->flags & CF_NEW) 1341 if (expect_false (prev->flags & CF_NEW))
861 { 1342 {
862 /* create a new empty context */ 1343 /* create a new empty/source context */
863 Newz (0, prev->cctx, 1, coro_cctx); 1344 prev->cctx = cctx_new_empty ();
864 prev->flags &= ~CF_NEW; 1345 prev->flags &= ~CF_NEW;
865 prev->flags |= CF_RUNNING; 1346 prev->flags |= CF_RUNNING;
866 } 1347 }
867 1348
868 /*TODO: must not croak here */
869 if (!prev->flags & CF_RUNNING)
870 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
871
872 if (next->flags & CF_RUNNING)
873 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
874
875 if (next->flags & CF_DESTROYED)
876 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
877
878 prev->flags &= ~CF_RUNNING; 1349 prev->flags &= ~CF_RUNNING;
879 next->flags |= CF_RUNNING; 1350 next->flags |= CF_RUNNING;
880 1351
881 LOCK; 1352 LOCK;
882 1353
1354 /* first get rid of the old state */
1355 save_perl (aTHX_ prev);
1356
883 if (next->flags & CF_NEW) 1357 if (expect_false (next->flags & CF_NEW))
884 { 1358 {
885 /* need to start coroutine */ 1359 /* need to start coroutine */
886 next->flags &= ~CF_NEW; 1360 next->flags &= ~CF_NEW;
887 /* first get rid of the old state */
888 save_perl (aTHX_ prev);
889 /* setup coroutine call */ 1361 /* setup coroutine call */
890 setup_coro (aTHX_ next); 1362 coro_setup (aTHX_ next);
891 } 1363 }
892 else 1364 else
893 {
894 /* coroutine already started */
895 save_perl (aTHX_ prev);
896 load_perl (aTHX_ next); 1365 load_perl (aTHX_ next);
897 }
898 1366
899 prev__cctx = prev->cctx; 1367 prev__cctx = prev->cctx;
900 1368
901 /* possibly "free" the cctx */ 1369 /* possibly untie and reuse the cctx */
1370 if (expect_true (
902 if (prev__cctx->idle_sp == STACKLEVEL) 1371 prev__cctx->idle_sp == STACKLEVEL
1372 && !(prev__cctx->flags & CC_TRACE)
1373 && !force_cctx
1374 ))
903 { 1375 {
904 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1376 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
905 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1377 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
906 1378
907 prev->cctx = 0; 1379 prev->cctx = 0;
1380
1381 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1382 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1383 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1384 if (!next->cctx)
1385 next->cctx = cctx_get (aTHX);
908 1386
909 cctx_put (prev__cctx); 1387 cctx_put (prev__cctx);
910 } 1388 }
911 1389
1390 ++next->usecount;
1391
912 if (!next->cctx) 1392 if (expect_true (!next->cctx))
913 next->cctx = cctx_get (aTHX); 1393 next->cctx = cctx_get (aTHX);
914 1394
1395 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1396 transfer_next = next;
1397
915 if (prev__cctx != next->cctx) 1398 if (expect_false (prev__cctx != next->cctx))
916 { 1399 {
917 prev__cctx->top_env = PL_top_env; 1400 prev__cctx->top_env = PL_top_env;
918 PL_top_env = next->cctx->top_env; 1401 PL_top_env = next->cctx->top_env;
919 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1402 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
920 } 1403 }
921 1404
922 free_coro_mortal (aTHX); 1405 transfer_tail (aTHX);
923 UNLOCK;
924 } 1406 }
925} 1407}
926 1408
927struct transfer_args 1409#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
928{
929 struct coro *prev, *next;
930};
931
932#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1410#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
933 1411
934/** high level stuff ********************************************************/ 1412/** high level stuff ********************************************************/
935 1413
936static int 1414static int
937coro_state_destroy (pTHX_ struct coro *coro) 1415coro_state_destroy (pTHX_ struct coro *coro)
… …
954 1432
955 if (coro->mainstack && coro->mainstack != main_mainstack) 1433 if (coro->mainstack && coro->mainstack != main_mainstack)
956 { 1434 {
957 struct coro temp; 1435 struct coro temp;
958 1436
959 assert (!(coro->flags & CF_RUNNING));
960
961 Zero (&temp, 1, struct coro);
962 temp.save = CORO_SAVE_ALL;
963
964 if (coro->flags & CF_RUNNING) 1437 if (coro->flags & CF_RUNNING)
965 croak ("FATAL: tried to destroy currently running coroutine"); 1438 croak ("FATAL: tried to destroy currently running coroutine");
966 1439
967 save_perl (aTHX_ &temp); 1440 save_perl (aTHX_ &temp);
968 load_perl (aTHX_ coro); 1441 load_perl (aTHX_ coro);
969 1442
970 coro_destroy_stacks (aTHX); 1443 coro_destruct (aTHX_ coro);
971 1444
972 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1445 load_perl (aTHX_ &temp);
973 1446
974 coro->mainstack = 0; 1447 coro->slot = 0;
975 } 1448 }
976 1449
977 cctx_destroy (coro->cctx); 1450 cctx_destroy (coro->cctx);
978 SvREFCNT_dec (coro->args); 1451 SvREFCNT_dec (coro->args);
979 1452
… …
1020#else 1493#else
1021# define MGf_DUP 0 1494# define MGf_DUP 0
1022#endif 1495#endif
1023}; 1496};
1024 1497
1025static struct coro *
1026SvSTATE_ (pTHX_ SV *coro)
1027{
1028 HV *stash;
1029 MAGIC *mg;
1030
1031 if (SvROK (coro))
1032 coro = SvRV (coro);
1033
1034 stash = SvSTASH (coro);
1035 if (stash != coro_stash && stash != coro_state_stash)
1036 {
1037 /* very slow, but rare, check */
1038 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
1039 croak ("Coro::State object required");
1040 }
1041
1042 mg = CORO_MAGIC (coro);
1043 return (struct coro *)mg->mg_ptr;
1044}
1045
1046#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
1047
1048static void 1498static void
1049prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1499prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1050{ 1500{
1051 ta->prev = SvSTATE (prev_sv); 1501 ta->prev = SvSTATE (prev_sv);
1052 ta->next = SvSTATE (next_sv); 1502 ta->next = SvSTATE (next_sv);
1503 TRANSFER_CHECK (*ta);
1053} 1504}
1054 1505
1055static void 1506static void
1056api_transfer (SV *prev_sv, SV *next_sv) 1507api_transfer (SV *prev_sv, SV *next_sv)
1057{ 1508{
1058 dTHX; 1509 dTHX;
1059 struct transfer_args ta; 1510 struct transfer_args ta;
1060 1511
1061 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1512 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1062 TRANSFER (ta); 1513 TRANSFER (ta, 1);
1063}
1064
1065static int
1066api_save (SV *coro_sv, int new_save)
1067{
1068 dTHX;
1069 struct coro *coro = SvSTATE (coro_sv);
1070 int old_save = coro->save;
1071
1072 if (new_save >= 0)
1073 coro->save = new_save;
1074
1075 return old_save;
1076} 1514}
1077 1515
1078/** Coro ********************************************************************/ 1516/** Coro ********************************************************************/
1079 1517
1080static void 1518static void
… …
1082{ 1520{
1083 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1521 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1084} 1522}
1085 1523
1086static SV * 1524static SV *
1087coro_deq (pTHX_ int min_prio) 1525coro_deq (pTHX)
1088{ 1526{
1089 int prio = PRIO_MAX - PRIO_MIN; 1527 int prio;
1090 1528
1091 min_prio -= PRIO_MIN;
1092 if (min_prio < 0)
1093 min_prio = 0;
1094
1095 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1529 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1096 if (AvFILLp (coro_ready [prio]) >= 0) 1530 if (AvFILLp (coro_ready [prio]) >= 0)
1097 return av_shift (coro_ready [prio]); 1531 return av_shift (coro_ready [prio]);
1098 1532
1099 return 0; 1533 return 0;
1100} 1534}
… …
1102static int 1536static int
1103api_ready (SV *coro_sv) 1537api_ready (SV *coro_sv)
1104{ 1538{
1105 dTHX; 1539 dTHX;
1106 struct coro *coro; 1540 struct coro *coro;
1541 SV *sv_hook;
1542 void (*xs_hook)(void);
1107 1543
1108 if (SvROK (coro_sv)) 1544 if (SvROK (coro_sv))
1109 coro_sv = SvRV (coro_sv); 1545 coro_sv = SvRV (coro_sv);
1110 1546
1111 coro = SvSTATE (coro_sv); 1547 coro = SvSTATE (coro_sv);
… …
1114 return 0; 1550 return 0;
1115 1551
1116 coro->flags |= CF_READY; 1552 coro->flags |= CF_READY;
1117 1553
1118 LOCK; 1554 LOCK;
1555
1556 sv_hook = coro_nready ? 0 : coro_readyhook;
1557 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1558
1119 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1559 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1120 ++coro_nready; 1560 ++coro_nready;
1561
1121 UNLOCK; 1562 UNLOCK;
1563
1564 if (sv_hook)
1565 {
1566 dSP;
1567
1568 ENTER;
1569 SAVETMPS;
1570
1571 PUSHMARK (SP);
1572 PUTBACK;
1573 call_sv (sv_hook, G_DISCARD);
1574 SPAGAIN;
1575
1576 FREETMPS;
1577 LEAVE;
1578 }
1579
1580 if (xs_hook)
1581 xs_hook ();
1122 1582
1123 return 1; 1583 return 1;
1124} 1584}
1125 1585
1126static int 1586static int
1127api_is_ready (SV *coro_sv) 1587api_is_ready (SV *coro_sv)
1128{ 1588{
1129 dTHX; 1589 dTHX;
1590
1130 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1591 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1131} 1592}
1132 1593
1133static void 1594INLINE void
1134prepare_schedule (pTHX_ struct transfer_args *ta) 1595prepare_schedule (pTHX_ struct transfer_args *ta)
1135{ 1596{
1136 SV *prev_sv, *next_sv; 1597 SV *prev_sv, *next_sv;
1137 1598
1138 for (;;) 1599 for (;;)
1139 { 1600 {
1140 LOCK; 1601 LOCK;
1141 next_sv = coro_deq (aTHX_ PRIO_MIN); 1602 next_sv = coro_deq (aTHX);
1142 1603
1143 /* nothing to schedule: call the idle handler */ 1604 /* nothing to schedule: call the idle handler */
1144 if (!next_sv) 1605 if (expect_false (!next_sv))
1145 { 1606 {
1146 dSP; 1607 dSP;
1147 UNLOCK; 1608 UNLOCK;
1148 1609
1149 ENTER; 1610 ENTER;
1150 SAVETMPS; 1611 SAVETMPS;
1151 1612
1152 PUSHMARK (SP); 1613 PUSHMARK (SP);
1153 PUTBACK; 1614 PUTBACK;
1154 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1615 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1616 SPAGAIN;
1155 1617
1156 FREETMPS; 1618 FREETMPS;
1157 LEAVE; 1619 LEAVE;
1158 continue; 1620 continue;
1159 } 1621 }
1160 1622
1161 ta->next = SvSTATE (next_sv); 1623 ta->next = SvSTATE (next_sv);
1162 1624
1163 /* cannot transfer to destroyed coros, skip and look for next */ 1625 /* cannot transfer to destroyed coros, skip and look for next */
1164 if (ta->next->flags & CF_DESTROYED) 1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1165 { 1627 {
1166 UNLOCK; 1628 UNLOCK;
1167 SvREFCNT_dec (next_sv); 1629 SvREFCNT_dec (next_sv);
1168 /* coro_nready is already taken care of by destroy */ 1630 /* coro_nready has already been taken care of by destroy */
1169 continue; 1631 continue;
1170 } 1632 }
1171 1633
1172 --coro_nready; 1634 --coro_nready;
1173 UNLOCK; 1635 UNLOCK;
1174 break; 1636 break;
1175 } 1637 }
1176 1638
1177 /* free this only after the transfer */ 1639 /* free this only after the transfer */
1178 prev_sv = SvRV (coro_current); 1640 prev_sv = SvRV (coro_current);
1641 ta->prev = SvSTATE (prev_sv);
1642 TRANSFER_CHECK (*ta);
1643 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1644 ta->next->flags &= ~CF_READY;
1179 SvRV_set (coro_current, next_sv); 1645 SvRV_set (coro_current, next_sv);
1180 ta->prev = SvSTATE (prev_sv);
1181
1182 assert (ta->next->flags & CF_READY);
1183 ta->next->flags &= ~CF_READY;
1184 1646
1185 LOCK; 1647 LOCK;
1186 free_coro_mortal (aTHX); 1648 free_coro_mortal (aTHX);
1187 coro_mortal = prev_sv; 1649 coro_mortal = prev_sv;
1188 UNLOCK; 1650 UNLOCK;
1189} 1651}
1190 1652
1191static void 1653INLINE void
1192prepare_cede (pTHX_ struct transfer_args *ta) 1654prepare_cede (pTHX_ struct transfer_args *ta)
1193{ 1655{
1194 api_ready (coro_current); 1656 api_ready (coro_current);
1195 prepare_schedule (aTHX_ ta); 1657 prepare_schedule (aTHX_ ta);
1196} 1658}
… …
1214{ 1676{
1215 dTHX; 1677 dTHX;
1216 struct transfer_args ta; 1678 struct transfer_args ta;
1217 1679
1218 prepare_schedule (aTHX_ &ta); 1680 prepare_schedule (aTHX_ &ta);
1219 TRANSFER (ta); 1681 TRANSFER (ta, 1);
1220} 1682}
1221 1683
1222static int 1684static int
1223api_cede (void) 1685api_cede (void)
1224{ 1686{
1225 dTHX; 1687 dTHX;
1226 struct transfer_args ta; 1688 struct transfer_args ta;
1227 1689
1228 prepare_cede (aTHX_ &ta); 1690 prepare_cede (aTHX_ &ta);
1229 1691
1230 if (ta.prev != ta.next) 1692 if (expect_true (ta.prev != ta.next))
1231 { 1693 {
1232 TRANSFER (ta); 1694 TRANSFER (ta, 1);
1233 return 1; 1695 return 1;
1234 } 1696 }
1235 else 1697 else
1236 return 0; 1698 return 0;
1237} 1699}
… …
1242 dTHX; 1704 dTHX;
1243 struct transfer_args ta; 1705 struct transfer_args ta;
1244 1706
1245 if (prepare_cede_notself (aTHX_ &ta)) 1707 if (prepare_cede_notself (aTHX_ &ta))
1246 { 1708 {
1247 TRANSFER (ta); 1709 TRANSFER (ta, 1);
1248 return 1; 1710 return 1;
1249 } 1711 }
1250 else 1712 else
1251 return 0; 1713 return 0;
1252} 1714}
1253 1715
1716static void
1717api_trace (SV *coro_sv, int flags)
1718{
1719 dTHX;
1720 struct coro *coro = SvSTATE (coro_sv);
1721
1722 if (flags & CC_TRACE)
1723 {
1724 if (!coro->cctx)
1725 coro->cctx = cctx_new_run ();
1726 else if (!(coro->cctx->flags & CC_TRACE))
1727 croak ("cannot enable tracing on coroutine with custom stack");
1728
1729 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1730 }
1731 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1732 {
1733 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1734
1735 if (coro->flags & CF_RUNNING)
1736 PL_runops = RUNOPS_DEFAULT;
1737 else
1738 coro->slot->runops = RUNOPS_DEFAULT;
1739 }
1740}
1741
1742#if 0
1743static int
1744coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1745{
1746 AV *padlist;
1747 AV *av = (AV *)mg->mg_obj;
1748
1749 abort ();
1750
1751 return 0;
1752}
1753
1754static MGVTBL coro_gensub_vtbl = {
1755 0, 0, 0, 0,
1756 coro_gensub_free
1757};
1758#endif
1759
1760/*****************************************************************************/
1761/* PerlIO::cede */
1762
1763typedef struct
1764{
1765 PerlIOBuf base;
1766 NV next, every;
1767} PerlIOCede;
1768
1769static IV
1770PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1771{
1772 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1773
1774 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1775 self->next = nvtime () + self->every;
1776
1777 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1778}
1779
1780static SV *
1781PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1782{
1783 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1784
1785 return newSVnv (self->every);
1786}
1787
1788static IV
1789PerlIOCede_flush (pTHX_ PerlIO *f)
1790{
1791 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1792 double now = nvtime ();
1793
1794 if (now >= self->next)
1795 {
1796 api_cede ();
1797 self->next = now + self->every;
1798 }
1799
1800 return PerlIOBuf_flush (aTHX_ f);
1801}
1802
1803static PerlIO_funcs PerlIO_cede =
1804{
1805 sizeof(PerlIO_funcs),
1806 "cede",
1807 sizeof(PerlIOCede),
1808 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1809 PerlIOCede_pushed,
1810 PerlIOBuf_popped,
1811 PerlIOBuf_open,
1812 PerlIOBase_binmode,
1813 PerlIOCede_getarg,
1814 PerlIOBase_fileno,
1815 PerlIOBuf_dup,
1816 PerlIOBuf_read,
1817 PerlIOBuf_unread,
1818 PerlIOBuf_write,
1819 PerlIOBuf_seek,
1820 PerlIOBuf_tell,
1821 PerlIOBuf_close,
1822 PerlIOCede_flush,
1823 PerlIOBuf_fill,
1824 PerlIOBase_eof,
1825 PerlIOBase_error,
1826 PerlIOBase_clearerr,
1827 PerlIOBase_setlinebuf,
1828 PerlIOBuf_get_base,
1829 PerlIOBuf_bufsiz,
1830 PerlIOBuf_get_ptr,
1831 PerlIOBuf_get_cnt,
1832 PerlIOBuf_set_ptrcnt,
1833};
1834
1835/*****************************************************************************/
1836
1837static const CV *ssl_cv; /* for quick consistency check */
1838
1839static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1840static SV *ssl_arg0;
1841static SV *ssl_arg1;
1842
1843/* this restores the stack in the case we patched the entersub, to */
1844/* recreate the stack frame as perl will on following calls */
1845/* since entersub cleared the stack */
1846static OP *
1847pp_restore (pTHX)
1848{
1849 dSP;
1850
1851 PUSHMARK (SP);
1852
1853 EXTEND (SP, 3);
1854 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0;
1855 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1856 PUSHs ((SV *)CvGV (ssl_cv));
1857
1858 RETURNOP (ssl_restore.op_first);
1859}
1860
1861/* declare prototype */
1862XS(XS_Coro__State__set_stacklevel);
1863
1864#define OPpENTERSUB_SSL 15
1865
1866static OP *
1867pp_set_stacklevel (pTHX)
1868{
1869 dSP;
1870 struct transfer_args ta;
1871 SV **arg = PL_stack_base + TOPMARK + 1;
1872 int items = SP - arg; /* args without function object */
1873
1874 /* do a quick consistency check on the "function" object, and if it isn't */
1875 /* for us, divert to the real entersub */
1876 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1877 return PL_ppaddr[OP_ENTERSUB](aTHX);
1878
1879 /* pop args */
1880 SP = PL_stack_base + POPMARK;
1881
1882 if (!(PL_op->op_flags & OPf_STACKED))
1883 {
1884 /* ampersand-form of call, use @_ instead of stack */
1885 AV *av = GvAV (PL_defgv);
1886 arg = AvARRAY (av);
1887 items = AvFILLp (av) + 1;
1888 }
1889
1890 PUTBACK;
1891 switch (PL_op->op_private & OPpENTERSUB_SSL)
1892 {
1893 case 0:
1894 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1895 break;
1896
1897 case 1:
1898 if (items != 2)
1899 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1900
1901 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1902 break;
1903
1904 case 2:
1905 prepare_schedule (aTHX_ &ta);
1906 break;
1907
1908 case 3:
1909 prepare_cede (aTHX_ &ta);
1910 break;
1911
1912 case 4:
1913 if (!prepare_cede_notself (aTHX_ &ta))
1914 goto skip;
1915
1916 break;
1917 }
1918
1919 TRANSFER (ta, 0);
1920 SPAGAIN;
1921
1922skip:
1923 PUTBACK;
1924 SSL_TAIL;
1925 SPAGAIN;
1926 RETURN;
1927}
1928
1254MODULE = Coro::State PACKAGE = Coro::State 1929MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1255 1930
1256PROTOTYPES: DISABLE 1931PROTOTYPES: DISABLE
1257 1932
1258BOOT: 1933# these not obviously related functions are all rolled into the same xs
1259{ 1934# function to increase chances that they all will call transfer with the same
1260#ifdef USE_ITHREADS 1935# stack offset
1261 MUTEX_INIT (&coro_mutex);
1262#endif
1263 BOOT_PAGESIZE;
1264
1265 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1266
1267 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1268 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1269 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1270 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1271 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1272 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1273 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1274
1275 main_mainstack = PL_mainstack;
1276 main_top_env = PL_top_env;
1277
1278 while (main_top_env->je_prev)
1279 main_top_env = main_top_env->je_prev;
1280
1281 coroapi.ver = CORO_API_VERSION;
1282 coroapi.transfer = api_transfer;
1283
1284 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1285}
1286
1287SV *
1288new (char *klass, ...)
1289 CODE:
1290{
1291 struct coro *coro;
1292 HV *hv;
1293 int i;
1294
1295 Newz (0, coro, 1, struct coro);
1296 coro->args = newAV ();
1297 coro->save = CORO_SAVE_DEF;
1298 coro->flags = CF_NEW;
1299
1300 if (coro_first) coro_first->prev = coro;
1301 coro->next = coro_first;
1302 coro_first = coro;
1303
1304 coro->hv = hv = newHV ();
1305 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1306 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1307
1308 for (i = 1; i < items; i++)
1309 av_push (coro->args, newSVsv (ST (i)));
1310}
1311 OUTPUT:
1312 RETVAL
1313
1314int
1315save (SV *coro, int new_save = -1)
1316 CODE:
1317 RETVAL = api_save (coro, new_save);
1318 OUTPUT:
1319 RETVAL
1320
1321int
1322save_also (SV *coro_sv, int save_also)
1323 CODE:
1324{
1325 struct coro *coro = SvSTATE (coro_sv);
1326 RETVAL = coro->save;
1327 coro->save |= save_also;
1328}
1329 OUTPUT:
1330 RETVAL
1331
1332void 1936void
1333_set_stacklevel (...) 1937_set_stacklevel (...)
1334 ALIAS: 1938 ALIAS:
1335 Coro::State::transfer = 1 1939 Coro::State::transfer = 1
1336 Coro::schedule = 2 1940 Coro::schedule = 2
1337 Coro::cede = 3 1941 Coro::cede = 3
1338 Coro::cede_notself = 4 1942 Coro::cede_notself = 4
1339 CODE: 1943 CODE:
1340{ 1944{
1341 struct transfer_args ta; 1945 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1342 1946
1343 switch (ix) 1947 assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
1948 ssl_cv = cv;
1949
1950 /* we patch the op, and then re-run the whole call */
1951 /* we have to put some dummy argument on the stack for this to work */
1952 ssl_restore.op_next = (OP *)&ssl_restore;
1953 ssl_restore.op_type = OP_NULL;
1954 ssl_restore.op_ppaddr = pp_restore;
1955 ssl_restore.op_first = PL_op;
1956
1957 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1958 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1959
1960 PL_op->op_ppaddr = pp_set_stacklevel;
1961 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1962
1963 PL_op = (OP *)&ssl_restore;
1964}
1965
1966BOOT:
1967{
1968#ifdef USE_ITHREADS
1969 MUTEX_INIT (&coro_lock);
1970# if CORO_PTHREAD
1971 coro_thx = PERL_GET_CONTEXT;
1972# endif
1973#endif
1974 BOOT_PAGESIZE;
1975
1976 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1977 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1978
1979 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1980 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1981 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1982
1983 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1984 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1985 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1986
1987 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1988
1989 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1990 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1991 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1992 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1993
1994 main_mainstack = PL_mainstack;
1995 main_top_env = PL_top_env;
1996
1997 while (main_top_env->je_prev)
1998 main_top_env = main_top_env->je_prev;
1999
2000 coroapi.ver = CORO_API_VERSION;
2001 coroapi.rev = CORO_API_REVISION;
2002 coroapi.transfer = api_transfer;
2003
1344 { 2004 {
1345 case 0: 2005 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1346 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1347 ta.next = 0;
1348 break;
1349 2006
1350 case 1: 2007 if (!svp) croak ("Time::HiRes is required");
1351 if (items != 2) 2008 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1352 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1353 2009
1354 prepare_transfer (aTHX_ &ta, ST (0), ST (1)); 2010 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1355 break;
1356
1357 case 2:
1358 prepare_schedule (aTHX_ &ta);
1359 break;
1360
1361 case 3:
1362 prepare_cede (aTHX_ &ta);
1363 break;
1364
1365 case 4:
1366 if (!prepare_cede_notself (aTHX_ &ta))
1367 XSRETURN_EMPTY;
1368
1369 break;
1370 } 2011 }
1371 2012
1372 BARRIER; 2013 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1373 TRANSFER (ta);
1374
1375 if (GIMME_V != G_VOID && ta.next != ta.prev)
1376 XSRETURN_YES;
1377} 2014}
2015
2016SV *
2017new (char *klass, ...)
2018 CODE:
2019{
2020 struct coro *coro;
2021 MAGIC *mg;
2022 HV *hv;
2023 int i;
2024
2025 Newz (0, coro, 1, struct coro);
2026 coro->args = newAV ();
2027 coro->flags = CF_NEW;
2028
2029 if (coro_first) coro_first->prev = coro;
2030 coro->next = coro_first;
2031 coro_first = coro;
2032
2033 coro->hv = hv = newHV ();
2034 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2035 mg->mg_flags |= MGf_DUP;
2036 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2037
2038 av_extend (coro->args, items - 1);
2039 for (i = 1; i < items; i++)
2040 av_push (coro->args, newSVsv (ST (i)));
2041}
2042 OUTPUT:
2043 RETVAL
1378 2044
1379bool 2045bool
1380_destroy (SV *coro_sv) 2046_destroy (SV *coro_sv)
1381 CODE: 2047 CODE:
1382 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2048 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1383 OUTPUT: 2049 OUTPUT:
1384 RETVAL 2050 RETVAL
1385 2051
1386void 2052void
1387_exit (code) 2053_exit (int code)
1388 int code
1389 PROTOTYPE: $ 2054 PROTOTYPE: $
1390 CODE: 2055 CODE:
1391 _exit (code); 2056 _exit (code);
1392 2057
1393int 2058int
1394cctx_stacksize (int new_stacksize = 0) 2059cctx_stacksize (int new_stacksize = 0)
1395 CODE: 2060 CODE:
1396 RETVAL = coro_stacksize; 2061 RETVAL = cctx_stacksize;
1397 if (new_stacksize) 2062 if (new_stacksize)
2063 {
1398 coro_stacksize = new_stacksize; 2064 cctx_stacksize = new_stacksize;
2065 ++cctx_gen;
2066 }
2067 OUTPUT:
2068 RETVAL
2069
2070int
2071cctx_max_idle (int max_idle = 0)
2072 CODE:
2073 RETVAL = cctx_max_idle;
2074 if (max_idle > 1)
2075 cctx_max_idle = max_idle;
1399 OUTPUT: 2076 OUTPUT:
1400 RETVAL 2077 RETVAL
1401 2078
1402int 2079int
1403cctx_count () 2080cctx_count ()
… …
1427call (Coro::State coro, SV *coderef) 2104call (Coro::State coro, SV *coderef)
1428 ALIAS: 2105 ALIAS:
1429 eval = 1 2106 eval = 1
1430 CODE: 2107 CODE:
1431{ 2108{
1432 if (coro->mainstack) 2109 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1433 { 2110 {
1434 struct coro temp; 2111 struct coro temp;
1435 Zero (&temp, 1, struct coro);
1436 temp.save = CORO_SAVE_ALL;
1437 2112
1438 if (!(coro->flags & CF_RUNNING)) 2113 if (!(coro->flags & CF_RUNNING))
1439 { 2114 {
2115 PUTBACK;
1440 save_perl (aTHX_ &temp); 2116 save_perl (aTHX_ &temp);
1441 load_perl (aTHX_ coro); 2117 load_perl (aTHX_ coro);
1442 } 2118 }
1443 2119
1444 { 2120 {
1445 dSP; 2121 dSP;
1446 ENTER; 2122 ENTER;
1447 SAVETMPS; 2123 SAVETMPS;
2124 PUTBACK;
2125 PUSHSTACK;
1448 PUSHMARK (SP); 2126 PUSHMARK (SP);
1449 PUTBACK; 2127
1450 if (ix) 2128 if (ix)
1451 eval_sv (coderef, 0); 2129 eval_sv (coderef, 0);
1452 else 2130 else
1453 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2131 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2132
2133 POPSTACK;
1454 SPAGAIN; 2134 SPAGAIN;
1455 FREETMPS; 2135 FREETMPS;
1456 LEAVE; 2136 LEAVE;
1457 PUTBACK; 2137 PUTBACK;
1458 } 2138 }
1459 2139
1460 if (!(coro->flags & CF_RUNNING)) 2140 if (!(coro->flags & CF_RUNNING))
1461 { 2141 {
1462 save_perl (aTHX_ coro); 2142 save_perl (aTHX_ coro);
1463 load_perl (aTHX_ &temp); 2143 load_perl (aTHX_ &temp);
2144 SPAGAIN;
1464 } 2145 }
1465 } 2146 }
1466} 2147}
1467 2148
1468SV * 2149SV *
1469is_ready (Coro::State coro) 2150is_ready (Coro::State coro)
1470 PROTOTYPE: $ 2151 PROTOTYPE: $
1471 ALIAS: 2152 ALIAS:
1472 is_ready = CF_READY 2153 is_ready = CF_READY
… …
1477 RETVAL = boolSV (coro->flags & ix); 2158 RETVAL = boolSV (coro->flags & ix);
1478 OUTPUT: 2159 OUTPUT:
1479 RETVAL 2160 RETVAL
1480 2161
1481void 2162void
1482trace (Coro::State coro, int enable = 0) 2163throw (Coro::State self, SV *throw = &PL_sv_undef)
1483 CODE: 2164 PROTOTYPE: $;$
1484 if (enable) 2165 CODE:
1485 { 2166 SvREFCNT_dec (self->throw);
1486 if (coro->flags & CF_RUNNING) 2167 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1487 croak ("cannot enable tracing on running coroutine");
1488 2168
1489 if (coro->cctx) 2169void
1490 croak ("cannot enable tracing on coroutine with custom stack"); 2170api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1491
1492 coro->cctx = cctx_new ();
1493 coro->cctx->flags |= CC_TRACE;
1494 }
1495 else
1496 if (coro->cctx && coro->cctx->flags & CC_TRACE)
1497 {
1498 coro->cctx->flags &= ~CC_TRACE;
1499 coro->cctx->flags |= CC_NOREUSE;
1500 }
1501 2171
1502SV * 2172SV *
1503has_stack (Coro::State coro) 2173has_cctx (Coro::State coro)
1504 PROTOTYPE: $ 2174 PROTOTYPE: $
1505 CODE: 2175 CODE:
1506 RETVAL = boolSV (!!coro->cctx); 2176 RETVAL = boolSV (!!coro->cctx);
1507 OUTPUT: 2177 OUTPUT:
1508 RETVAL 2178 RETVAL
1509 2179
1510IV 2180int
2181is_traced (Coro::State coro)
2182 PROTOTYPE: $
2183 CODE:
2184 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2185 OUTPUT:
2186 RETVAL
2187
2188UV
1511rss (Coro::State coro) 2189rss (Coro::State coro)
1512 PROTOTYPE: $ 2190 PROTOTYPE: $
2191 ALIAS:
2192 usecount = 1
1513 CODE: 2193 CODE:
1514 RETVAL = coro_rss (coro); 2194 switch (ix)
2195 {
2196 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2197 case 1: RETVAL = coro->usecount; break;
2198 }
1515 OUTPUT: 2199 OUTPUT:
1516 RETVAL 2200 RETVAL
1517 2201
2202void
2203force_cctx ()
2204 CODE:
2205 struct coro *coro = SvSTATE (coro_current);
2206 coro->cctx->idle_sp = 0;
2207
2208void
2209swap_defsv (Coro::State self)
2210 PROTOTYPE: $
2211 ALIAS:
2212 swap_defav = 1
2213 CODE:
2214 if (!self->slot)
2215 croak ("cannot swap state with coroutine that has no saved state");
2216 else
2217 {
2218 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2219 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2220
2221 SV *tmp = *src; *src = *dst; *dst = tmp;
2222 }
1518 2223
1519MODULE = Coro::State PACKAGE = Coro 2224MODULE = Coro::State PACKAGE = Coro
1520 2225
1521BOOT: 2226BOOT:
1522{ 2227{
1523 int i; 2228 int i;
1524 2229
1525 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1526 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1527 av_async_pool = get_av ("Coro::async_pool", TRUE); 2230 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2231 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2232 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1528 2233
1529 coro_current = get_sv ("Coro::current", FALSE); 2234 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1530 SvREADONLY_on (coro_current); 2235 SvREADONLY_on (coro_current);
1531 2236
1532 coro_stash = gv_stashpv ("Coro", TRUE); 2237 coro_stash = gv_stashpv ("Coro", TRUE);
1533 2238
1534 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2239 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1535 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2240 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1536 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2241 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1537 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2242 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1540 2245
1541 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2246 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1542 coro_ready[i] = newAV (); 2247 coro_ready[i] = newAV ();
1543 2248
1544 { 2249 {
1545 SV *sv = perl_get_sv("Coro::API", 1); 2250 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1546 2251
1547 coroapi.schedule = api_schedule; 2252 coroapi.schedule = api_schedule;
1548 coroapi.save = api_save;
1549 coroapi.cede = api_cede; 2253 coroapi.cede = api_cede;
1550 coroapi.cede_notself = api_cede_notself; 2254 coroapi.cede_notself = api_cede_notself;
1551 coroapi.ready = api_ready; 2255 coroapi.ready = api_ready;
1552 coroapi.is_ready = api_is_ready; 2256 coroapi.is_ready = api_is_ready;
1553 coroapi.nready = &coro_nready; 2257 coroapi.nready = &coro_nready;
… …
1562void 2266void
1563_set_current (SV *current) 2267_set_current (SV *current)
1564 PROTOTYPE: $ 2268 PROTOTYPE: $
1565 CODE: 2269 CODE:
1566 SvREFCNT_dec (SvRV (coro_current)); 2270 SvREFCNT_dec (SvRV (coro_current));
1567 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2271 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2272
2273void
2274_set_readyhook (SV *hook)
2275 PROTOTYPE: $
2276 CODE:
2277 LOCK;
2278 SvREFCNT_dec (coro_readyhook);
2279 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2280 UNLOCK;
1568 2281
1569int 2282int
1570prio (Coro::State coro, int newprio = 0) 2283prio (Coro::State coro, int newprio = 0)
1571 ALIAS: 2284 ALIAS:
1572 nice = 1 2285 nice = 1
… …
1607# for async_pool speedup 2320# for async_pool speedup
1608void 2321void
1609_pool_1 (SV *cb) 2322_pool_1 (SV *cb)
1610 CODE: 2323 CODE:
1611{ 2324{
1612 int i, len; 2325 struct coro *coro = SvSTATE (coro_current);
1613 HV *hv = (HV *)SvRV (coro_current); 2326 HV *hv = (HV *)SvRV (coro_current);
1614 AV *defav = GvAV (PL_defgv); 2327 AV *defav = GvAV (PL_defgv);
1615 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2328 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1616 AV *invoke_av; 2329 AV *invoke_av;
2330 int i, len;
1617 2331
1618 if (!invoke) 2332 if (!invoke)
2333 {
2334 SV *old = PL_diehook;
2335 PL_diehook = 0;
2336 SvREFCNT_dec (old);
1619 croak ("\3terminate\2\n"); 2337 croak ("\3async_pool terminate\2\n");
2338 }
2339
2340 SvREFCNT_dec (coro->saved_deffh);
2341 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1620 2342
1621 hv_store (hv, "desc", sizeof ("desc") - 1, 2343 hv_store (hv, "desc", sizeof ("desc") - 1,
1622 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2344 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1623 2345
1624 invoke_av = (AV *)SvRV (invoke); 2346 invoke_av = (AV *)SvRV (invoke);
… …
1628 2350
1629 if (len > 0) 2351 if (len > 0)
1630 { 2352 {
1631 av_fill (defav, len - 1); 2353 av_fill (defav, len - 1);
1632 for (i = 0; i < len; ++i) 2354 for (i = 0; i < len; ++i)
1633 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2355 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1634 } 2356 }
1635 2357
1636 SvREFCNT_dec (invoke); 2358 SvREFCNT_dec (invoke);
1637} 2359}
1638 2360
… …
1642{ 2364{
1643 struct coro *coro = SvSTATE (coro_current); 2365 struct coro *coro = SvSTATE (coro_current);
1644 2366
1645 sv_setsv (cb, &PL_sv_undef); 2367 sv_setsv (cb, &PL_sv_undef);
1646 2368
2369 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2370 coro->saved_deffh = 0;
2371
1647 if (coro_rss (coro) > SvIV (sv_pool_rss) 2372 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1648 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2373 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2374 {
2375 SV *old = PL_diehook;
2376 PL_diehook = 0;
2377 SvREFCNT_dec (old);
1649 croak ("\3terminate\2\n"); 2378 croak ("\3async_pool terminate\2\n");
2379 }
1650 2380
1651 av_clear (GvAV (PL_defgv)); 2381 av_clear (GvAV (PL_defgv));
1652 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2382 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1653 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2383 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1654 coro->save = CORO_SAVE_DEF; 2384
1655 coro->prio = 0; 2385 coro->prio = 0;
2386
2387 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2388 api_trace (coro_current, 0);
2389
1656 av_push (av_async_pool, newSVsv (coro_current)); 2390 av_push (av_async_pool, newSVsv (coro_current));
1657} 2391}
1658 2392
2393#if 0
2394
2395void
2396_generator_call (...)
2397 PROTOTYPE: @
2398 PPCODE:
2399 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2400 xxxx
2401 abort ();
2402
2403SV *
2404gensub (SV *sub, ...)
2405 PROTOTYPE: &;@
2406 CODE:
2407{
2408 struct coro *coro;
2409 MAGIC *mg;
2410 CV *xcv;
2411 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2412 int i;
2413
2414 CvGV (ncv) = CvGV (cv);
2415 CvFILE (ncv) = CvFILE (cv);
2416
2417 Newz (0, coro, 1, struct coro);
2418 coro->args = newAV ();
2419 coro->flags = CF_NEW;
2420
2421 av_extend (coro->args, items - 1);
2422 for (i = 1; i < items; i++)
2423 av_push (coro->args, newSVsv (ST (i)));
2424
2425 CvISXSUB_on (ncv);
2426 CvXSUBANY (ncv).any_ptr = (void *)coro;
2427
2428 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2429
2430 CvXSUB (ncv) = CvXSUB (xcv);
2431 CvANON_on (ncv);
2432
2433 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2434 RETVAL = newRV_noinc ((SV *)ncv);
2435}
2436 OUTPUT:
2437 RETVAL
2438
2439#endif
2440
1659 2441
1660MODULE = Coro::State PACKAGE = Coro::AIO 2442MODULE = Coro::State PACKAGE = Coro::AIO
1661 2443
1662SV * 2444void
1663_get_state () 2445_get_state (SV *self)
1664 CODE: 2446 PPCODE:
1665{ 2447{
1666 struct io_state *data; 2448 AV *defav = GvAV (PL_defgv);
1667 2449 AV *av = newAV ();
2450 int i;
1668 RETVAL = newSV (sizeof (struct io_state)); 2451 SV *data_sv = newSV (sizeof (struct io_state));
1669 data = (struct io_state *)SvPVX (RETVAL); 2452 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1670 SvCUR_set (RETVAL, sizeof (struct io_state)); 2453 SvCUR_set (data_sv, sizeof (struct io_state));
1671 SvPOK_only (RETVAL); 2454 SvPOK_only (data_sv);
1672 2455
1673 data->errorno = errno; 2456 data->errorno = errno;
1674 data->laststype = PL_laststype; 2457 data->laststype = PL_laststype;
1675 data->laststatval = PL_laststatval; 2458 data->laststatval = PL_laststatval;
1676 data->statcache = PL_statcache; 2459 data->statcache = PL_statcache;
2460
2461 av_extend (av, AvFILLp (defav) + 1 + 1);
2462
2463 for (i = 0; i <= AvFILLp (defav); ++i)
2464 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2465
2466 av_push (av, data_sv);
2467
2468 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2469
2470 api_ready (self);
1677} 2471}
1678 OUTPUT:
1679 RETVAL
1680 2472
1681void 2473void
1682_set_state (char *data_) 2474_set_state (SV *state)
1683 PROTOTYPE: $ 2475 PROTOTYPE: $
1684 CODE: 2476 PPCODE:
1685{ 2477{
1686 struct io_state *data = (void *)data_; 2478 AV *av = (AV *)SvRV (state);
2479 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2480 int i;
1687 2481
1688 errno = data->errorno; 2482 errno = data->errorno;
1689 PL_laststype = data->laststype; 2483 PL_laststype = data->laststype;
1690 PL_laststatval = data->laststatval; 2484 PL_laststatval = data->laststatval;
1691 PL_statcache = data->statcache; 2485 PL_statcache = data->statcache;
1692}
1693 2486
2487 EXTEND (SP, AvFILLp (av));
2488 for (i = 0; i < AvFILLp (av); ++i)
2489 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2490}
2491
2492
2493MODULE = Coro::State PACKAGE = Coro::AnyEvent
2494
2495BOOT:
2496 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2497
2498SV *
2499_schedule (...)
2500 PROTOTYPE: @
2501 CODE:
2502{
2503 static int incede;
2504
2505 api_cede_notself ();
2506
2507 ++incede;
2508 while (coro_nready >= incede && api_cede ())
2509 ;
2510
2511 sv_setsv (sv_activity, &PL_sv_undef);
2512 if (coro_nready >= incede)
2513 {
2514 PUSHMARK (SP);
2515 PUTBACK;
2516 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2517 SPAGAIN;
2518 }
2519
2520 --incede;
2521}
2522
2523
2524MODULE = Coro::State PACKAGE = PerlIO::cede
2525
2526BOOT:
2527 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2528

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