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Comparing Coro/Coro/State.xs (file contents):
Revision 1.192 by root, Fri Oct 5 21:51:40 2007 UTC vs.
Revision 1.265 by root, Fri Nov 14 02:42:26 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
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
79
80/* 5.8.8 */
81#ifndef GV_NOTQUAL
82# define GV_NOTQUAL 0
83#endif
84#ifndef newSV
85# define newSV(l) NEWSV(0,l)
86#endif 104#endif
87 105
88#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
89# undef CORO_STACKGUARD 107# undef CORO_STACKGUARD
90#endif 108#endif
… …
105 123
106#define IN_DESTRUCT (PL_main_cv == Nullcv) 124#define IN_DESTRUCT (PL_main_cv == Nullcv)
107 125
108#if __GNUC__ >= 3 126#if __GNUC__ >= 3
109# define attribute(x) __attribute__(x) 127# define attribute(x) __attribute__(x)
110# define BARRIER __asm__ __volatile__ ("" : : : "memory") 128# define expect(expr,value) __builtin_expect ((expr),(value))
129# define INLINE static inline
111#else 130#else
112# define attribute(x) 131# define attribute(x)
113# define BARRIER 132# define expect(expr,value) (expr)
133# define INLINE static
114#endif 134#endif
135
136#define expect_false(expr) expect ((expr) != 0, 0)
137#define expect_true(expr) expect ((expr) != 0, 1)
115 138
116#define NOINLINE attribute ((noinline)) 139#define NOINLINE attribute ((noinline))
117 140
118#include "CoroAPI.h" 141#include "CoroAPI.h"
119 142
120#ifdef USE_ITHREADS 143#ifdef USE_ITHREADS
144
121static perl_mutex coro_mutex; 145static perl_mutex coro_lock;
122# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
123# 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
124#else 152#else
153
125# define LOCK (void)0 154# define LOCK (void)0
126# define UNLOCK (void)0 155# define UNLOCK (void)0
156
127#endif 157#endif
158
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
128 163
129/* helper storage struct for Coro::AIO */ 164/* helper storage struct for Coro::AIO */
130struct io_state 165struct io_state
131{ 166{
167 AV *res;
132 int errorno; 168 int errorno;
133 I32 laststype; 169 I32 laststype; /* U16 in 5.10.0 */
134 int laststatval; 170 int laststatval;
135 Stat_t statcache; 171 Stat_t statcache;
136}; 172};
137 173
174static double (*nvtime)(); /* so why doesn't it take void? */
175
176static U32 cctx_gen;
138static size_t coro_stacksize = CORO_STACKSIZE; 177static size_t cctx_stacksize = CORO_STACKSIZE;
139static struct CoroAPI coroapi; 178static struct CoroAPI coroapi;
140static AV *main_mainstack; /* used to differentiate between $main and others */ 179static AV *main_mainstack; /* used to differentiate between $main and others */
141static JMPENV *main_top_env; 180static JMPENV *main_top_env;
142static HV *coro_state_stash, *coro_stash; 181static HV *coro_state_stash, *coro_stash;
143static 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};
144 189
145static GV *irsgv; /* $/ */ 190static GV *irsgv; /* $/ */
146static GV *stdoutgv; /* *STDOUT */ 191static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook;
193static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */
147 195
148/* async_pool helper stuff */ 196/* async_pool helper stuff */
149static SV *sv_pool_rss; 197static SV *sv_pool_rss;
150static SV *sv_pool_size; 198static SV *sv_pool_size;
151static AV *av_async_pool; 199static AV *av_async_pool;
200
201/* Coro::AnyEvent */
202static SV *sv_activity;
152 203
153static struct coro_cctx *cctx_first; 204static struct coro_cctx *cctx_first;
154static int cctx_count, cctx_idle; 205static int cctx_count, cctx_idle;
155 206
156enum { 207enum {
… …
174 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 225 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
175 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 */
176 JMPENV *top_env; 227 JMPENV *top_env;
177 coro_context cctx; 228 coro_context cctx;
178 229
230 U32 gen;
179#if CORO_USE_VALGRIND 231#if CORO_USE_VALGRIND
180 int valgrind_id; 232 int valgrind_id;
181#endif 233#endif
182 unsigned char flags; 234 unsigned char flags;
183} coro_cctx; 235} coro_cctx;
… …
187 CF_READY = 0x0002, /* coroutine is ready */ 239 CF_READY = 0x0002, /* coroutine is ready */
188 CF_NEW = 0x0004, /* has never been switched to */ 240 CF_NEW = 0x0004, /* has never been switched to */
189 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
190}; 242};
191 243
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
192/* this is a structure representing a perl-level coroutine */ 257/* this is a structure representing a perl-level coroutine */
193struct coro { 258struct coro {
194 /* the c coroutine allocated to this perl coroutine, if any */ 259 /* the c coroutine allocated to this perl coroutine, if any */
195 coro_cctx *cctx; 260 coro_cctx *cctx;
196 261
262 /* process data */
263 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */
265
197 /* data associated with this coroutine (initial args) */ 266 AV *args; /* data associated with this coroutine (initial args) */
198 AV *args; 267 int refcnt; /* coroutines are refcounted, yes */
199 int refcnt;
200 int flags; /* CF_ flags */ 268 int flags; /* CF_ flags */
201 269 HV *hv; /* the perl hash associated with this coro, if any */
202 /* optionally saved, might be zero */
203 AV *defav; /* @_ */
204 SV *defsv; /* $_ */
205 SV *errsv; /* $@ */
206 SV *deffh; /* default filehandle */
207 SV *irssv; /* $/ */
208 SV *irssv_sv; /* real $/ cache */
209
210#define VAR(name,type) type name;
211# include "state.h"
212#undef VAR
213 270
214 /* statistics */ 271 /* statistics */
215 int usecount; /* number of transfers to this coro */ 272 int usecount; /* number of transfers to this coro */
216 273
217 /* coro process data */ 274 /* coro process data */
218 int prio; 275 int prio;
219 //SV *throw; 276 SV *throw; /* exception to be thrown */
220 277
221 /* async_pool */ 278 /* async_pool */
222 SV *saved_deffh; 279 SV *saved_deffh;
223 280
224 /* linked list */ 281 /* linked list */
225 struct coro *next, *prev; 282 struct coro *next, *prev;
226 HV *hv; /* the perl hash associated with this coro, if any */
227}; 283};
228 284
229typedef struct coro *Coro__State; 285typedef struct coro *Coro__State;
230typedef struct coro *Coro__State_or_hashref; 286typedef struct coro *Coro__State_or_hashref;
231 287
… …
238#define PRIO_IDLE -3 294#define PRIO_IDLE -3
239#define PRIO_MIN -4 295#define PRIO_MIN -4
240 296
241/* for Coro.pm */ 297/* for Coro.pm */
242static SV *coro_current; 298static SV *coro_current;
299static SV *coro_readyhook;
243static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
244static int coro_nready; 301static int coro_nready;
245static struct coro *coro_first; 302static struct coro *coro_first;
246 303
247/** lowlevel stuff **********************************************************/ 304/** lowlevel stuff **********************************************************/
248 305
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
249static AV * 336static AV *
250coro_clone_padlist (pTHX_ CV *cv) 337coro_clone_padlist (pTHX_ CV *cv)
251{ 338{
252 AV *padlist = CvPADLIST (cv); 339 AV *padlist = CvPADLIST (cv);
253 AV *newpadlist, *newpad; 340 AV *newpadlist, *newpad;
254 341
255 newpadlist = newAV (); 342 newpadlist = newAV ();
256 AvREAL_off (newpadlist); 343 AvREAL_off (newpadlist);
257#if PERL_VERSION_ATLEAST (5,9,0) 344#if PERL_VERSION_ATLEAST (5,10,0)
258 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 345 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
259#else 346#else
260 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
261#endif 348#endif
262 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 349 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
263 --AvFILLp (padlist); 350 --AvFILLp (padlist);
264 351
265 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 352 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
266 av_store (newpadlist, 1, (SV *)newpad); 353 av_store (newpadlist, 1, (SV *)newpad);
267 354
268 return newpadlist; 355 return newpadlist;
269} 356}
270 357
… …
300 387
301 /* casting is fun. */ 388 /* casting is fun. */
302 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 389 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
303 free_padlist (aTHX_ padlist); 390 free_padlist (aTHX_ padlist);
304 391
305 SvREFCNT_dec (av); 392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
306 393
307 return 0; 394 return 0;
308} 395}
309 396
310#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
311 399
312static 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};
313 404
314#define CORO_MAGIC(cv) \ 405#define CORO_MAGIC(sv, type) \
315 SvMAGIC (cv) \ 406 SvMAGIC (sv) \
316 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 407 ? SvMAGIC (sv)->mg_type == type \
317 ? SvMAGIC (cv) \ 408 ? SvMAGIC (sv) \
318 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 409 : mg_find (sv, type) \
319 : 0 410 : 0
320 411
321static struct coro * 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 *
322SvSTATE_ (pTHX_ SV *coro) 416SvSTATE_ (pTHX_ SV *coro)
323{ 417{
324 HV *stash; 418 HV *stash;
325 MAGIC *mg; 419 MAGIC *mg;
326 420
327 if (SvROK (coro)) 421 if (SvROK (coro))
328 coro = SvRV (coro); 422 coro = SvRV (coro);
329 423
330 if (SvTYPE (coro) != SVt_PVHV) 424 if (expect_false (SvTYPE (coro) != SVt_PVHV))
331 croak ("Coro::State object required"); 425 croak ("Coro::State object required");
332 426
333 stash = SvSTASH (coro); 427 stash = SvSTASH (coro);
334 if (stash != coro_stash && stash != coro_state_stash) 428 if (expect_false (stash != coro_stash && stash != coro_state_stash))
335 { 429 {
336 /* very slow, but rare, check */ 430 /* very slow, but rare, check */
337 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 431 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
338 croak ("Coro::State object required"); 432 croak ("Coro::State object required");
339 } 433 }
340 434
341 mg = CORO_MAGIC (coro); 435 mg = CORO_MAGIC_state (coro);
342 return (struct coro *)mg->mg_ptr; 436 return (struct coro *)mg->mg_ptr;
343} 437}
344 438
345#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
346 440
347/* the next two functions merely cache the padlists */ 441/* the next two functions merely cache the padlists */
348static void 442static void
349get_padlist (pTHX_ CV *cv) 443get_padlist (pTHX_ CV *cv)
350{ 444{
351 MAGIC *mg = CORO_MAGIC (cv); 445 MAGIC *mg = CORO_MAGIC_cv (cv);
352 AV *av; 446 AV *av;
353 447
354 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 448 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
355 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 449 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
356 else 450 else
357 { 451 {
358#if CORO_PREFER_PERL_FUNCTIONS 452#if CORO_PREFER_PERL_FUNCTIONS
359 /* this is probably cleaner, but also slower? */ 453 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */
360 CV *cp = Perl_cv_clone (cv); 455 CV *cp = Perl_cv_clone (cv);
361 CvPADLIST (cv) = CvPADLIST (cp); 456 CvPADLIST (cv) = CvPADLIST (cp);
362 CvPADLIST (cp) = 0; 457 CvPADLIST (cp) = 0;
363 SvREFCNT_dec (cp); 458 SvREFCNT_dec (cp);
364#else 459#else
… …
368} 463}
369 464
370static void 465static void
371put_padlist (pTHX_ CV *cv) 466put_padlist (pTHX_ CV *cv)
372{ 467{
373 MAGIC *mg = CORO_MAGIC (cv); 468 MAGIC *mg = CORO_MAGIC_cv (cv);
374 AV *av; 469 AV *av;
375 470
376 if (!mg) 471 if (expect_false (!mg))
377 { 472 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
378 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
379 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
380 mg->mg_virtual = &vtbl_coro;
381 mg->mg_obj = (SV *)newAV ();
382 }
383 473
384 av = (AV *)mg->mg_obj; 474 av = (AV *)mg->mg_obj;
385 475
386 if (AvFILLp (av) >= AvMAX (av)) 476 if (expect_false (AvFILLp (av) >= AvMAX (av)))
387 av_extend (av, AvMAX (av) + 1); 477 av_extend (av, AvMAX (av) + 1);
388 478
389 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 479 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
390} 480}
391 481
392/** load & save, init *******************************************************/ 482/** load & save, init *******************************************************/
393 483
394static void 484static void
395load_perl (pTHX_ Coro__State c) 485load_perl (pTHX_ Coro__State c)
396{ 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
397#define VAR(name,type) PL_ ## name = c->name; 497 #define VAR(name,type) PL_ ## name = slot->name;
398# include "state.h" 498 # include "state.h"
399#undef VAR 499 #undef VAR
400
401 GvSV (PL_defgv) = c->defsv;
402 GvAV (PL_defgv) = c->defav;
403 GvSV (PL_errgv) = c->errsv;
404 GvSV (irsgv) = c->irssv_sv;
405 500
406 { 501 {
407 dSP; 502 dSP;
503
408 CV *cv; 504 CV *cv;
409 505
410 /* now do the ugly restore mess */ 506 /* now do the ugly restore mess */
411 while ((cv = (CV *)POPs)) 507 while (expect_true (cv = (CV *)POPs))
412 { 508 {
413 put_padlist (aTHX_ cv); /* mark this padlist as available */ 509 put_padlist (aTHX_ cv); /* mark this padlist as available */
414 CvDEPTH (cv) = PTR2IV (POPs); 510 CvDEPTH (cv) = PTR2IV (POPs);
415 CvPADLIST (cv) = (AV *)POPs; 511 CvPADLIST (cv) = (AV *)POPs;
416 } 512 }
… …
435 531
436 XPUSHs (Nullsv); 532 XPUSHs (Nullsv);
437 /* this loop was inspired by pp_caller */ 533 /* this loop was inspired by pp_caller */
438 for (;;) 534 for (;;)
439 { 535 {
440 while (cxix >= 0) 536 while (expect_true (cxix >= 0))
441 { 537 {
442 PERL_CONTEXT *cx = &ccstk[cxix--]; 538 PERL_CONTEXT *cx = &ccstk[cxix--];
443 539
444 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 540 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
445 { 541 {
446 CV *cv = cx->blk_sub.cv; 542 CV *cv = cx->blk_sub.cv;
447 543
448 if (CvDEPTH (cv)) 544 if (expect_true (CvDEPTH (cv)))
449 { 545 {
450 EXTEND (SP, 3); 546 EXTEND (SP, 3);
451 PUSHs ((SV *)CvPADLIST (cv)); 547 PUSHs ((SV *)CvPADLIST (cv));
452 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 548 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
453 PUSHs ((SV *)cv); 549 PUSHs ((SV *)cv);
454 550
455 CvDEPTH (cv) = 0; 551 CvDEPTH (cv) = 0;
456 get_padlist (aTHX_ cv); 552 get_padlist (aTHX_ cv);
457 } 553 }
458 } 554 }
459 } 555 }
460 556
461 if (top_si->si_type == PERLSI_MAIN) 557 if (expect_true (top_si->si_type == PERLSI_MAIN))
462 break; 558 break;
463 559
464 top_si = top_si->si_prev; 560 top_si = top_si->si_prev;
465 ccstk = top_si->si_cxstack; 561 ccstk = top_si->si_cxstack;
466 cxix = top_si->si_cxix; 562 cxix = top_si->si_cxix;
467 } 563 }
468 564
469 PUTBACK; 565 PUTBACK;
470 } 566 }
471 567
568 /* allocate some space on the context stack for our purposes */
569 /* we manually unroll here, as usually 2 slots is enough */
570 if (SLOT_COUNT >= 1) CXINC;
571 if (SLOT_COUNT >= 2) CXINC;
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 */
579
580 c->mainstack = PL_mainstack;
581
582 {
583 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
584
472 c->defav = GvAV (PL_defgv); 585 slot->defav = GvAV (PL_defgv);
473 c->defsv = DEFSV; 586 slot->defsv = DEFSV;
474 c->errsv = ERRSV; 587 slot->errsv = ERRSV;
475 c->irssv_sv = GvSV (irsgv); 588 slot->irsgv = GvSV (irsgv);
476 589
477#define VAR(name,type)c->name = PL_ ## name; 590 #define VAR(name,type) slot->name = PL_ ## name;
478# include "state.h" 591 # include "state.h"
479#undef VAR 592 #undef VAR
593 }
480} 594}
481 595
482/* 596/*
483 * allocate various perl stacks. This is an exact copy 597 * allocate various perl stacks. This is an exact copy
484 * of perl.c:init_stacks, except that it uses less memory 598 * of perl.c:init_stacks, except that it uses less memory
… …
489# define coro_init_stacks init_stacks 603# define coro_init_stacks init_stacks
490#else 604#else
491static void 605static void
492coro_init_stacks (pTHX) 606coro_init_stacks (pTHX)
493{ 607{
494 PL_curstackinfo = new_stackinfo(64, 6); 608 PL_curstackinfo = new_stackinfo(32, 8);
495 PL_curstackinfo->si_type = PERLSI_MAIN; 609 PL_curstackinfo->si_type = PERLSI_MAIN;
496 PL_curstack = PL_curstackinfo->si_stack; 610 PL_curstack = PL_curstackinfo->si_stack;
497 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 611 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
498 612
499 PL_stack_base = AvARRAY(PL_curstack); 613 PL_stack_base = AvARRAY(PL_curstack);
500 PL_stack_sp = PL_stack_base; 614 PL_stack_sp = PL_stack_base;
501 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 615 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
502 616
503 New(50,PL_tmps_stack,64,SV*); 617 New(50,PL_tmps_stack,32,SV*);
504 PL_tmps_floor = -1; 618 PL_tmps_floor = -1;
505 PL_tmps_ix = -1; 619 PL_tmps_ix = -1;
506 PL_tmps_max = 64; 620 PL_tmps_max = 32;
507 621
508 New(54,PL_markstack,16,I32); 622 New(54,PL_markstack,16,I32);
509 PL_markstack_ptr = PL_markstack; 623 PL_markstack_ptr = PL_markstack;
510 PL_markstack_max = PL_markstack + 16; 624 PL_markstack_max = PL_markstack + 16;
511 625
512#ifdef SET_MARK_OFFSET 626#ifdef SET_MARK_OFFSET
513 SET_MARK_OFFSET; 627 SET_MARK_OFFSET;
514#endif 628#endif
515 629
516 New(54,PL_scopestack,16,I32); 630 New(54,PL_scopestack,8,I32);
517 PL_scopestack_ix = 0; 631 PL_scopestack_ix = 0;
518 PL_scopestack_max = 16; 632 PL_scopestack_max = 8;
519 633
520 New(54,PL_savestack,64,ANY); 634 New(54,PL_savestack,24,ANY);
521 PL_savestack_ix = 0; 635 PL_savestack_ix = 0;
522 PL_savestack_max = 64; 636 PL_savestack_max = 24;
523 637
524#if !PERL_VERSION_ATLEAST (5,9,0) 638#if !PERL_VERSION_ATLEAST (5,10,0)
525 New(54,PL_retstack,4,OP*); 639 New(54,PL_retstack,4,OP*);
526 PL_retstack_ix = 0; 640 PL_retstack_ix = 0;
527 PL_retstack_max = 4; 641 PL_retstack_max = 4;
528#endif 642#endif
529} 643}
… …
531 645
532/* 646/*
533 * destroy the stacks, the callchain etc... 647 * destroy the stacks, the callchain etc...
534 */ 648 */
535static void 649static void
536coro_destroy_stacks (pTHX) 650coro_destruct_stacks (pTHX)
537{ 651{
538 while (PL_curstackinfo->si_next) 652 while (PL_curstackinfo->si_next)
539 PL_curstackinfo = PL_curstackinfo->si_next; 653 PL_curstackinfo = PL_curstackinfo->si_next;
540 654
541 while (PL_curstackinfo) 655 while (PL_curstackinfo)
… …
552 666
553 Safefree (PL_tmps_stack); 667 Safefree (PL_tmps_stack);
554 Safefree (PL_markstack); 668 Safefree (PL_markstack);
555 Safefree (PL_scopestack); 669 Safefree (PL_scopestack);
556 Safefree (PL_savestack); 670 Safefree (PL_savestack);
557#if !PERL_VERSION_ATLEAST (5,9,0) 671#if !PERL_VERSION_ATLEAST (5,10,0)
558 Safefree (PL_retstack); 672 Safefree (PL_retstack);
559#endif 673#endif
560} 674}
561 675
562static size_t 676static size_t
… …
564{ 678{
565 size_t rss = sizeof (*coro); 679 size_t rss = sizeof (*coro);
566 680
567 if (coro->mainstack) 681 if (coro->mainstack)
568 { 682 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
569 if (coro->flags & CF_RUNNING) 686 if (coro->flags & CF_RUNNING)
570 { 687 {
688 slot = &tmp_slot;
689
571 #define VAR(name,type)coro->name = PL_ ## name; 690 #define VAR(name,type) slot->name = PL_ ## name;
572 # include "state.h" 691 # include "state.h"
573 #undef VAR 692 #undef VAR
574 } 693 }
694 else
695 slot = coro->slot;
575 696
697 if (slot)
698 {
576 rss += sizeof (coro->curstackinfo); 699 rss += sizeof (slot->curstackinfo);
577 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
578 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
579 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
580 rss += coro->tmps_max * sizeof (SV *); 702 rss += slot->tmps_max * sizeof (SV *);
581 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); 703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
582 rss += coro->scopestack_max * sizeof (I32); 704 rss += slot->scopestack_max * sizeof (I32);
583 rss += coro->savestack_max * sizeof (ANY); 705 rss += slot->savestack_max * sizeof (ANY);
584 706
585#if !PERL_VERSION_ATLEAST (5,9,0) 707#if !PERL_VERSION_ATLEAST (5,10,0)
586 rss += coro->retstack_max * sizeof (OP *); 708 rss += slot->retstack_max * sizeof (OP *);
587#endif 709#endif
710 }
588 } 711 }
589 712
590 return rss; 713 return rss;
591} 714}
592 715
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 int gimme = GIMME_V;
728
729 if (gimme == G_SCALAR)
730 XPUSHs (&PL_sv_undef);
731
732 PUTBACK;
733}
734
593/** coroutine stack handling ************************************************/ 735/** coroutine stack handling ************************************************/
736
737static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
738static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
739static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
740
741/* apparently < 5.8.8 */
742#ifndef MgPV_nolen_const
743#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
744 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
745 (const char*)(mg)->mg_ptr)
746#endif
747
748/*
749 * This overrides the default magic get method of %SIG elements.
750 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
751 * and instead of tryign to save and restore the hash elements, we just provide
752 * readback here.
753 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
754 * not expecting this to actually change the hook. This is a potential problem
755 * when a schedule happens then, but we ignore this.
756 */
757static int
758coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
759{
760 const char *s = MgPV_nolen_const (mg);
761
762 if (*s == '_')
763 {
764 SV **svp = 0;
765
766 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
767 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
768
769 if (svp)
770 {
771 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
772 return 0;
773 }
774 }
775
776 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
777}
778
779static int
780coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
781{
782 const char *s = MgPV_nolen_const (mg);
783
784 if (*s == '_')
785 {
786 SV **svp = 0;
787
788 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
789 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
790
791 if (svp)
792 {
793 SV *old = *svp;
794 *svp = 0;
795 SvREFCNT_dec (old);
796 return 0;
797 }
798 }
799
800 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
801}
802
803static int
804coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
805{
806 const char *s = MgPV_nolen_const (mg);
807
808 if (*s == '_')
809 {
810 SV **svp = 0;
811
812 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
813 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
814
815 if (svp)
816 {
817 SV *old = *svp;
818 *svp = newSVsv (sv);
819 SvREFCNT_dec (old);
820 return 0;
821 }
822 }
823
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825}
594 826
595static void 827static void
596coro_setup (pTHX_ struct coro *coro) 828coro_setup (pTHX_ struct coro *coro)
597{ 829{
598 /* 830 /*
… …
603 PL_runops = RUNOPS_DEFAULT; 835 PL_runops = RUNOPS_DEFAULT;
604 PL_curcop = &PL_compiling; 836 PL_curcop = &PL_compiling;
605 PL_in_eval = EVAL_NULL; 837 PL_in_eval = EVAL_NULL;
606 PL_comppad = 0; 838 PL_comppad = 0;
607 PL_curpm = 0; 839 PL_curpm = 0;
840 PL_curpad = 0;
608 PL_localizing = 0; 841 PL_localizing = 0;
609 PL_dirty = 0; 842 PL_dirty = 0;
610 PL_restartop = 0; 843 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0;
846#endif
847
848 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
611 851
612 GvSV (PL_defgv) = newSV (0); 852 GvSV (PL_defgv) = newSV (0);
613 GvAV (PL_defgv) = coro->args; coro->args = 0; 853 GvAV (PL_defgv) = coro->args; coro->args = 0;
614 GvSV (PL_errgv) = newSV (0); 854 GvSV (PL_errgv) = newSV (0);
615 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
616 PL_rs = newSVsv (GvSV (irsgv)); 856 PL_rs = newSVsv (GvSV (irsgv));
617 PL_defoutgv = SvREFCNT_inc (stdoutgv); 857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
618
619 ENTER; /* necessary e.g. for dounwind */
620 858
621 { 859 {
622 dSP; 860 dSP;
623 LOGOP myop; 861 UNOP myop;
624 862
625 Zero (&myop, 1, LOGOP); 863 Zero (&myop, 1, UNOP);
626 myop.op_next = Nullop; 864 myop.op_next = Nullop;
627 myop.op_flags = OPf_WANT_VOID; 865 myop.op_flags = OPf_WANT_VOID;
628 866
629 PUSHMARK (SP); 867 PUSHMARK (SP);
630 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
631 PUTBACK; 869 PUTBACK;
632 PL_op = (OP *)&myop; 870 PL_op = (OP *)&myop;
633 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
634 SPAGAIN; 872 SPAGAIN;
635 } 873 }
874
875 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in set_stacklevel, called from pp_set_stacklevel,
877 * so we have to emulate entering pp_set_stacklevel here.
878 */
879 SSL_HEAD;
636} 880}
637 881
638static void 882static void
639coro_destroy (pTHX_ struct coro *coro) 883coro_destruct (pTHX_ struct coro *coro)
640{ 884{
641 if (!IN_DESTRUCT) 885 if (!IN_DESTRUCT)
642 { 886 {
643 /* restore all saved variables and stuff */ 887 /* restore all saved variables and stuff */
644 LEAVE_SCOPE (0); 888 LEAVE_SCOPE (0);
… …
660 SvREFCNT_dec (GvSV (PL_errgv)); 904 SvREFCNT_dec (GvSV (PL_errgv));
661 SvREFCNT_dec (PL_defoutgv); 905 SvREFCNT_dec (PL_defoutgv);
662 SvREFCNT_dec (PL_rs); 906 SvREFCNT_dec (PL_rs);
663 SvREFCNT_dec (GvSV (irsgv)); 907 SvREFCNT_dec (GvSV (irsgv));
664 908
909 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook);
911
665 SvREFCNT_dec (coro->saved_deffh); 912 SvREFCNT_dec (coro->saved_deffh);
666 //SvREFCNT_dec (coro->throw); 913 SvREFCNT_dec (coro->throw);
667 914
668 coro_destroy_stacks (aTHX); 915 coro_destruct_stacks (aTHX);
669} 916}
670 917
671static void 918INLINE void
672free_coro_mortal (pTHX) 919free_coro_mortal (pTHX)
673{ 920{
674 if (coro_mortal) 921 if (expect_true (coro_mortal))
675 { 922 {
676 SvREFCNT_dec (coro_mortal); 923 SvREFCNT_dec (coro_mortal);
677 coro_mortal = 0; 924 coro_mortal = 0;
678 } 925 }
679} 926}
… …
708 bot = PL_stack_base + cx->blk_oldsp + 1; 955 bot = PL_stack_base + cx->blk_oldsp + 1;
709 top = cx->blk_gimme == G_ARRAY ? SP + 1 956 top = cx->blk_gimme == G_ARRAY ? SP + 1
710 : cx->blk_gimme == G_SCALAR ? bot + 1 957 : cx->blk_gimme == G_SCALAR ? bot + 1
711 : bot; 958 : bot;
712 959
960 av_extend (av, top - bot);
713 while (bot < top) 961 while (bot < top)
714 av_push (av, SvREFCNT_inc (*bot++)); 962 av_push (av, SvREFCNT_inc_NN (*bot++));
715 963
716 PL_runops = RUNOPS_DEFAULT; 964 PL_runops = RUNOPS_DEFAULT;
717 ENTER; 965 ENTER;
718 SAVETMPS; 966 SAVETMPS;
719 EXTEND (SP, 3); 967 EXTEND (SP, 3);
… …
757 SAVETMPS; 1005 SAVETMPS;
758 EXTEND (SP, 3); 1006 EXTEND (SP, 3);
759 PUSHMARK (SP); 1007 PUSHMARK (SP);
760 PUSHs (&PL_sv_yes); 1008 PUSHs (&PL_sv_yes);
761 PUSHs (fullname); 1009 PUSHs (fullname);
762 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
763 PUTBACK; 1011 PUTBACK;
764 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
765 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1013 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
766 SPAGAIN; 1014 SPAGAIN;
767 FREETMPS; 1015 FREETMPS;
… …
799 1047
800 TAINT_NOT; 1048 TAINT_NOT;
801 return 0; 1049 return 0;
802} 1050}
803 1051
1052static void
1053prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
1054{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0;
1057}
1058
804/* inject a fake call to Coro::State::_cctx_init into the execution */ 1059/* inject a fake call to Coro::State::_cctx_init into the execution */
805/* _cctx_init should be careful, as it could be called at almost any time */ 1060/* _cctx_init should be careful, as it could be called at almost any time */
806/* during execution of a perl program */ 1061/* during execution of a perl program */
1062/* also initialises PL_top_env */
807static void NOINLINE 1063static void NOINLINE
808prepare_cctx (pTHX_ coro_cctx *cctx) 1064cctx_prepare (pTHX_ coro_cctx *cctx)
809{ 1065{
810 dSP; 1066 dSP;
811 LOGOP myop; 1067 UNOP myop;
812 1068
813 PL_top_env = &PL_start_env; 1069 PL_top_env = &PL_start_env;
814 1070
815 if (cctx->flags & CC_TRACE) 1071 if (cctx->flags & CC_TRACE)
816 PL_runops = runops_trace; 1072 PL_runops = runops_trace;
817 1073
818 Zero (&myop, 1, LOGOP); 1074 Zero (&myop, 1, UNOP);
819 myop.op_next = PL_op; 1075 myop.op_next = PL_op;
820 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
821 1077
822 PUSHMARK (SP); 1078 PUSHMARK (SP);
823 EXTEND (SP, 2); 1079 EXTEND (SP, 2);
824 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1080 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
825 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
826 PUTBACK; 1082 PUTBACK;
827 PL_op = (OP *)&myop; 1083 PL_op = (OP *)&myop;
828 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
829 SPAGAIN; 1085 SPAGAIN;
830} 1086}
831 1087
1088/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void
1090transfer_tail (pTHX)
1091{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX);
1097 UNLOCK;
1098
1099 if (expect_false (next->throw))
1100 {
1101 SV *exception = sv_2mortal (next->throw);
1102
1103 next->throw = 0;
1104 sv_setsv (ERRSV, exception);
1105 croak (0);
1106 }
1107}
1108
832/* 1109/*
833 * this is a _very_ stripped down perl interpreter ;) 1110 * this is a _very_ stripped down perl interpreter ;)
834 */ 1111 */
835static void 1112static void
836coro_run (void *arg) 1113cctx_run (void *arg)
837{ 1114{
1115#ifdef USE_ITHREADS
1116# if CORO_PTHREAD
1117 PERL_SET_CONTEXT (coro_thx);
1118# endif
1119#endif
1120 {
838 dTHX; 1121 dTHX;
839 1122
840 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1123 /* we are the alternative tail to pp_set_stacklevel */
841 UNLOCK; 1124 /* so do the same things here */
1125 SSL_TAIL;
842 1126
843 /* we now skip the entersub that lead to transfer() */ 1127 /* we now skip the op that did lead to transfer() */
844 PL_op = PL_op->op_next; 1128 PL_op = PL_op->op_next;
845 1129
846 /* inject a fake subroutine call to cctx_init */ 1130 /* inject a fake subroutine call to cctx_init */
847 prepare_cctx (aTHX_ (coro_cctx *)arg); 1131 cctx_prepare (aTHX_ (coro_cctx *)arg);
848 1132
1133 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX);
1135
849 /* somebody or something will hit me for both perl_run and PL_restartop */ 1136 /* somebody or something will hit me for both perl_run and PL_restartop */
850 PL_restartop = PL_op; 1137 PL_restartop = PL_op;
851 perl_run (PL_curinterp); 1138 perl_run (PL_curinterp);
852 1139
853 /* 1140 /*
854 * If perl-run returns we assume exit() was being called or the coro 1141 * If perl-run returns we assume exit() was being called or the coro
855 * fell off the end, which seems to be the only valid (non-bug) 1142 * fell off the end, which seems to be the only valid (non-bug)
856 * reason for perl_run to return. We try to exit by jumping to the 1143 * reason for perl_run to return. We try to exit by jumping to the
857 * bootstrap-time "top" top_env, as we cannot restore the "main" 1144 * bootstrap-time "top" top_env, as we cannot restore the "main"
858 * coroutine as Coro has no such concept 1145 * coroutine as Coro has no such concept
859 */ 1146 */
860 PL_top_env = main_top_env; 1147 PL_top_env = main_top_env;
861 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1148 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1149 }
862} 1150}
863 1151
864static coro_cctx * 1152static coro_cctx *
865cctx_new () 1153cctx_new ()
866{ 1154{
867 coro_cctx *cctx; 1155 coro_cctx *cctx;
1156
1157 ++cctx_count;
1158 New (0, cctx, 1, coro_cctx);
1159
1160 cctx->gen = cctx_gen;
1161 cctx->flags = 0;
1162 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1163
1164 return cctx;
1165}
1166
1167/* create a new cctx only suitable as source */
1168static coro_cctx *
1169cctx_new_empty ()
1170{
1171 coro_cctx *cctx = cctx_new ();
1172
1173 cctx->sptr = 0;
1174 coro_create (&cctx->cctx, 0, 0, 0, 0);
1175
1176 return cctx;
1177}
1178
1179/* create a new cctx suitable as destination/running a perl interpreter */
1180static coro_cctx *
1181cctx_new_run ()
1182{
1183 coro_cctx *cctx = cctx_new ();
868 void *stack_start; 1184 void *stack_start;
869 size_t stack_size; 1185 size_t stack_size;
870 1186
871 ++cctx_count;
872
873 Newz (0, cctx, 1, coro_cctx);
874
875#if HAVE_MMAP 1187#if HAVE_MMAP
876
877 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1188 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
878 /* mmap supposedly does allocate-on-write for us */ 1189 /* mmap supposedly does allocate-on-write for us */
879 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1190 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
880 1191
881 if (cctx->sptr != (void *)-1) 1192 if (cctx->sptr != (void *)-1)
882 { 1193 {
883# if CORO_STACKGUARD 1194 #if CORO_STACKGUARD
884 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1195 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
885# endif 1196 #endif
886 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1197 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
887 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1198 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
888 cctx->flags |= CC_MAPPED; 1199 cctx->flags |= CC_MAPPED;
889 } 1200 }
890 else 1201 else
891#endif 1202#endif
892 { 1203 {
893 cctx->ssize = coro_stacksize * (long)sizeof (long); 1204 cctx->ssize = cctx_stacksize * (long)sizeof (long);
894 New (0, cctx->sptr, coro_stacksize, long); 1205 New (0, cctx->sptr, cctx_stacksize, long);
895 1206
896 if (!cctx->sptr) 1207 if (!cctx->sptr)
897 { 1208 {
898 perror ("FATAL: unable to allocate stack for coroutine"); 1209 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
899 _exit (EXIT_FAILURE); 1210 _exit (EXIT_FAILURE);
900 } 1211 }
901 1212
902 stack_start = cctx->sptr; 1213 stack_start = cctx->sptr;
903 stack_size = cctx->ssize; 1214 stack_size = cctx->ssize;
904 } 1215 }
905 1216
906 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1217 #if CORO_USE_VALGRIND
1218 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1219 #endif
1220
907 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1221 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
908 1222
909 return cctx; 1223 return cctx;
910} 1224}
911 1225
912static void 1226static void
… …
914{ 1228{
915 if (!cctx) 1229 if (!cctx)
916 return; 1230 return;
917 1231
918 --cctx_count; 1232 --cctx_count;
1233 coro_destroy (&cctx->cctx);
919 1234
1235 /* coro_transfer creates new, empty cctx's */
1236 if (cctx->sptr)
1237 {
920#if CORO_USE_VALGRIND 1238 #if CORO_USE_VALGRIND
921 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1239 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
922#endif 1240 #endif
923 1241
924#if HAVE_MMAP 1242#if HAVE_MMAP
925 if (cctx->flags & CC_MAPPED) 1243 if (cctx->flags & CC_MAPPED)
926 munmap (cctx->sptr, cctx->ssize); 1244 munmap (cctx->sptr, cctx->ssize);
927 else 1245 else
928#endif 1246#endif
929 Safefree (cctx->sptr); 1247 Safefree (cctx->sptr);
1248 }
930 1249
931 Safefree (cctx); 1250 Safefree (cctx);
932} 1251}
1252
1253/* wether this cctx should be destructed */
1254#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
933 1255
934static coro_cctx * 1256static coro_cctx *
935cctx_get (pTHX) 1257cctx_get (pTHX)
936{ 1258{
937 while (cctx_first) 1259 while (expect_true (cctx_first))
938 { 1260 {
939 coro_cctx *cctx = cctx_first; 1261 coro_cctx *cctx = cctx_first;
940 cctx_first = cctx->next; 1262 cctx_first = cctx->next;
941 --cctx_idle; 1263 --cctx_idle;
942 1264
943 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1265 if (expect_true (!CCTX_EXPIRED (cctx)))
944 return cctx; 1266 return cctx;
945 1267
946 cctx_destroy (cctx); 1268 cctx_destroy (cctx);
947 } 1269 }
948 1270
949 return cctx_new (); 1271 return cctx_new_run ();
950} 1272}
951 1273
952static void 1274static void
953cctx_put (coro_cctx *cctx) 1275cctx_put (coro_cctx *cctx)
954{ 1276{
1277 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1278
955 /* free another cctx if overlimit */ 1279 /* free another cctx if overlimit */
956 if (cctx_idle >= MAX_IDLE_CCTX) 1280 if (expect_false (cctx_idle >= cctx_max_idle))
957 { 1281 {
958 coro_cctx *first = cctx_first; 1282 coro_cctx *first = cctx_first;
959 cctx_first = first->next; 1283 cctx_first = first->next;
960 --cctx_idle; 1284 --cctx_idle;
961 1285
… …
967 cctx_first = cctx; 1291 cctx_first = cctx;
968} 1292}
969 1293
970/** coroutine switching *****************************************************/ 1294/** coroutine switching *****************************************************/
971 1295
972static void NOINLINE 1296static void
973transfer_check (pTHX_ struct coro *prev, struct coro *next) 1297transfer_check (pTHX_ struct coro *prev, struct coro *next)
974{ 1298{
975 if (prev != next) 1299 if (expect_true (prev != next))
976 { 1300 {
977 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
978 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
979 1303
980 if (next->flags & CF_RUNNING) 1304 if (expect_false (next->flags & CF_RUNNING))
981 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
982 1306
983 if (next->flags & CF_DESTROYED) 1307 if (expect_false (next->flags & CF_DESTROYED))
984 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
985 1309
1310#if !PERL_VERSION_ATLEAST (5,10,0)
986 if (PL_lex_state != LEX_NOTPARSING) 1311 if (expect_false (PL_lex_state != LEX_NOTPARSING))
987 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1313#endif
988 } 1314 }
989} 1315}
990 1316
991/* always use the TRANSFER macro */ 1317/* always use the TRANSFER macro */
992static void NOINLINE 1318static void NOINLINE
993transfer (pTHX_ struct coro *prev, struct coro *next) 1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
994{ 1320{
995 dSTACKLEVEL; 1321 dSTACKLEVEL;
996 1322
997 /* sometimes transfer is only called to set idle_sp */ 1323 /* sometimes transfer is only called to set idle_sp */
998 if (!next) 1324 if (expect_false (!next))
999 { 1325 {
1000 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1001 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1327 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1002 } 1328 }
1003 else if (prev != next) 1329 else if (expect_true (prev != next))
1004 { 1330 {
1005 coro_cctx *prev__cctx; 1331 coro_cctx *prev__cctx;
1006 1332
1007 if (prev->flags & CF_NEW) 1333 if (expect_false (prev->flags & CF_NEW))
1008 { 1334 {
1009 /* create a new empty context */ 1335 /* create a new empty/source context */
1010 Newz (0, prev->cctx, 1, coro_cctx); 1336 prev->cctx = cctx_new_empty ();
1011 prev->flags &= ~CF_NEW; 1337 prev->flags &= ~CF_NEW;
1012 prev->flags |= CF_RUNNING; 1338 prev->flags |= CF_RUNNING;
1013 } 1339 }
1014 1340
1015 prev->flags &= ~CF_RUNNING; 1341 prev->flags &= ~CF_RUNNING;
1016 next->flags |= CF_RUNNING; 1342 next->flags |= CF_RUNNING;
1017 1343
1018 LOCK; 1344 LOCK;
1019 1345
1346 /* first get rid of the old state */
1347 save_perl (aTHX_ prev);
1348
1020 if (next->flags & CF_NEW) 1349 if (expect_false (next->flags & CF_NEW))
1021 { 1350 {
1022 /* need to start coroutine */ 1351 /* need to start coroutine */
1023 next->flags &= ~CF_NEW; 1352 next->flags &= ~CF_NEW;
1024 /* first get rid of the old state */
1025 save_perl (aTHX_ prev);
1026 /* setup coroutine call */ 1353 /* setup coroutine call */
1027 coro_setup (aTHX_ next); 1354 coro_setup (aTHX_ next);
1028 } 1355 }
1029 else 1356 else
1030 {
1031 /* coroutine already started */
1032 save_perl (aTHX_ prev);
1033 load_perl (aTHX_ next); 1357 load_perl (aTHX_ next);
1034 }
1035 1358
1036 prev__cctx = prev->cctx; 1359 prev__cctx = prev->cctx;
1037 1360
1038 /* possibly "free" the cctx */ 1361 /* possibly untie and reuse the cctx */
1039 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)) 1362 if (expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE)
1365 && !force_cctx
1366 ))
1040 { 1367 {
1041 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1368 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1042 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1043 1370
1044 prev->cctx = 0; 1371 prev->cctx = 0;
1372
1373 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1374 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1375 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1376 if (!next->cctx)
1377 next->cctx = cctx_get (aTHX);
1045 1378
1046 cctx_put (prev__cctx); 1379 cctx_put (prev__cctx);
1047 } 1380 }
1048 1381
1049 ++next->usecount; 1382 ++next->usecount;
1050 1383
1051 if (!next->cctx) 1384 if (expect_true (!next->cctx))
1052 next->cctx = cctx_get (aTHX); 1385 next->cctx = cctx_get (aTHX);
1053 1386
1387 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1388 transfer_next = next;
1389
1054 if (prev__cctx != next->cctx) 1390 if (expect_false (prev__cctx != next->cctx))
1055 { 1391 {
1056 prev__cctx->top_env = PL_top_env; 1392 prev__cctx->top_env = PL_top_env;
1057 PL_top_env = next->cctx->top_env; 1393 PL_top_env = next->cctx->top_env;
1058 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1394 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1059 } 1395 }
1060 1396
1061 free_coro_mortal (aTHX); 1397 transfer_tail (aTHX);
1062 UNLOCK;
1063 } 1398 }
1064} 1399}
1065 1400
1066struct transfer_args
1067{
1068 struct coro *prev, *next;
1069};
1070
1071#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1401#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1072#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1402#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1073 1403
1074/** high level stuff ********************************************************/ 1404/** high level stuff ********************************************************/
1075 1405
1076static int 1406static int
… …
1100 croak ("FATAL: tried to destroy currently running coroutine"); 1430 croak ("FATAL: tried to destroy currently running coroutine");
1101 1431
1102 save_perl (aTHX_ &temp); 1432 save_perl (aTHX_ &temp);
1103 load_perl (aTHX_ coro); 1433 load_perl (aTHX_ coro);
1104 1434
1105 coro_destroy (aTHX_ coro); 1435 coro_destruct (aTHX_ coro);
1106 1436
1107 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1437 load_perl (aTHX_ &temp);
1108 1438
1109 coro->mainstack = 0; 1439 coro->slot = 0;
1110 } 1440 }
1111 1441
1112 cctx_destroy (coro->cctx); 1442 cctx_destroy (coro->cctx);
1113 SvREFCNT_dec (coro->args); 1443 SvREFCNT_dec (coro->args);
1114 1444
… …
1170{ 1500{
1171 dTHX; 1501 dTHX;
1172 struct transfer_args ta; 1502 struct transfer_args ta;
1173 1503
1174 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1504 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1175 TRANSFER (ta); 1505 TRANSFER (ta, 1);
1176} 1506}
1177 1507
1178/** Coro ********************************************************************/ 1508/** Coro ********************************************************************/
1179 1509
1180static void 1510static void
… …
1182{ 1512{
1183 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1513 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1184} 1514}
1185 1515
1186static SV * 1516static SV *
1187coro_deq (pTHX_ int min_prio) 1517coro_deq (pTHX)
1188{ 1518{
1189 int prio = PRIO_MAX - PRIO_MIN; 1519 int prio;
1190 1520
1191 min_prio -= PRIO_MIN;
1192 if (min_prio < 0)
1193 min_prio = 0;
1194
1195 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1521 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1196 if (AvFILLp (coro_ready [prio]) >= 0) 1522 if (AvFILLp (coro_ready [prio]) >= 0)
1197 return av_shift (coro_ready [prio]); 1523 return av_shift (coro_ready [prio]);
1198 1524
1199 return 0; 1525 return 0;
1200} 1526}
… …
1202static int 1528static int
1203api_ready (SV *coro_sv) 1529api_ready (SV *coro_sv)
1204{ 1530{
1205 dTHX; 1531 dTHX;
1206 struct coro *coro; 1532 struct coro *coro;
1533 SV *sv_hook;
1534 void (*xs_hook)(void);
1207 1535
1208 if (SvROK (coro_sv)) 1536 if (SvROK (coro_sv))
1209 coro_sv = SvRV (coro_sv); 1537 coro_sv = SvRV (coro_sv);
1210 1538
1211 coro = SvSTATE (coro_sv); 1539 coro = SvSTATE (coro_sv);
… …
1214 return 0; 1542 return 0;
1215 1543
1216 coro->flags |= CF_READY; 1544 coro->flags |= CF_READY;
1217 1545
1218 LOCK; 1546 LOCK;
1547
1548 sv_hook = coro_nready ? 0 : coro_readyhook;
1549 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1550
1219 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1551 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1220 ++coro_nready; 1552 ++coro_nready;
1553
1221 UNLOCK; 1554 UNLOCK;
1555
1556 if (sv_hook)
1557 {
1558 dSP;
1559
1560 ENTER;
1561 SAVETMPS;
1562
1563 PUSHMARK (SP);
1564 PUTBACK;
1565 call_sv (sv_hook, G_DISCARD);
1566 SPAGAIN;
1567
1568 FREETMPS;
1569 LEAVE;
1570 }
1571
1572 if (xs_hook)
1573 xs_hook ();
1222 1574
1223 return 1; 1575 return 1;
1224} 1576}
1225 1577
1226static int 1578static int
1227api_is_ready (SV *coro_sv) 1579api_is_ready (SV *coro_sv)
1228{ 1580{
1229 dTHX; 1581 dTHX;
1582
1230 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1583 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1231} 1584}
1232 1585
1233static void 1586INLINE void
1234prepare_schedule (pTHX_ struct transfer_args *ta) 1587prepare_schedule (pTHX_ struct transfer_args *ta)
1235{ 1588{
1236 SV *prev_sv, *next_sv; 1589 SV *prev_sv, *next_sv;
1237 1590
1238 for (;;) 1591 for (;;)
1239 { 1592 {
1240 LOCK; 1593 LOCK;
1241 next_sv = coro_deq (aTHX_ PRIO_MIN); 1594 next_sv = coro_deq (aTHX);
1242 1595
1243 /* nothing to schedule: call the idle handler */ 1596 /* nothing to schedule: call the idle handler */
1244 if (!next_sv) 1597 if (expect_false (!next_sv))
1245 { 1598 {
1246 dSP; 1599 dSP;
1247 UNLOCK; 1600 UNLOCK;
1248 1601
1249 ENTER; 1602 ENTER;
1250 SAVETMPS; 1603 SAVETMPS;
1251 1604
1252 PUSHMARK (SP); 1605 PUSHMARK (SP);
1253 PUTBACK; 1606 PUTBACK;
1254 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1607 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1608 SPAGAIN;
1255 1609
1256 FREETMPS; 1610 FREETMPS;
1257 LEAVE; 1611 LEAVE;
1258 continue; 1612 continue;
1259 } 1613 }
1260 1614
1261 ta->next = SvSTATE (next_sv); 1615 ta->next = SvSTATE (next_sv);
1262 1616
1263 /* cannot transfer to destroyed coros, skip and look for next */ 1617 /* cannot transfer to destroyed coros, skip and look for next */
1264 if (ta->next->flags & CF_DESTROYED) 1618 if (expect_false (ta->next->flags & CF_DESTROYED))
1265 { 1619 {
1266 UNLOCK; 1620 UNLOCK;
1267 SvREFCNT_dec (next_sv); 1621 SvREFCNT_dec (next_sv);
1268 /* coro_nready is already taken care of by destroy */ 1622 /* coro_nready has already been taken care of by destroy */
1269 continue; 1623 continue;
1270 } 1624 }
1271 1625
1272 --coro_nready; 1626 --coro_nready;
1273 UNLOCK; 1627 UNLOCK;
… …
1276 1630
1277 /* free this only after the transfer */ 1631 /* free this only after the transfer */
1278 prev_sv = SvRV (coro_current); 1632 prev_sv = SvRV (coro_current);
1279 ta->prev = SvSTATE (prev_sv); 1633 ta->prev = SvSTATE (prev_sv);
1280 TRANSFER_CHECK (*ta); 1634 TRANSFER_CHECK (*ta);
1281 assert (ta->next->flags & CF_READY); 1635 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1282 ta->next->flags &= ~CF_READY; 1636 ta->next->flags &= ~CF_READY;
1283 SvRV_set (coro_current, next_sv); 1637 SvRV_set (coro_current, next_sv);
1284 1638
1285 LOCK; 1639 LOCK;
1286 free_coro_mortal (aTHX); 1640 free_coro_mortal (aTHX);
1287 coro_mortal = prev_sv; 1641 coro_mortal = prev_sv;
1288 UNLOCK; 1642 UNLOCK;
1289} 1643}
1290 1644
1291static void 1645INLINE void
1292prepare_cede (pTHX_ struct transfer_args *ta) 1646prepare_cede (pTHX_ struct transfer_args *ta)
1293{ 1647{
1294 api_ready (coro_current); 1648 api_ready (coro_current);
1295 prepare_schedule (aTHX_ ta); 1649 prepare_schedule (aTHX_ ta);
1296} 1650}
… …
1314{ 1668{
1315 dTHX; 1669 dTHX;
1316 struct transfer_args ta; 1670 struct transfer_args ta;
1317 1671
1318 prepare_schedule (aTHX_ &ta); 1672 prepare_schedule (aTHX_ &ta);
1319 TRANSFER (ta); 1673 TRANSFER (ta, 1);
1320} 1674}
1321 1675
1322static int 1676static int
1323api_cede (void) 1677api_cede (void)
1324{ 1678{
1325 dTHX; 1679 dTHX;
1326 struct transfer_args ta; 1680 struct transfer_args ta;
1327 1681
1328 prepare_cede (aTHX_ &ta); 1682 prepare_cede (aTHX_ &ta);
1329 1683
1330 if (ta.prev != ta.next) 1684 if (expect_true (ta.prev != ta.next))
1331 { 1685 {
1332 TRANSFER (ta); 1686 TRANSFER (ta, 1);
1333 return 1; 1687 return 1;
1334 } 1688 }
1335 else 1689 else
1336 return 0; 1690 return 0;
1337} 1691}
… …
1342 dTHX; 1696 dTHX;
1343 struct transfer_args ta; 1697 struct transfer_args ta;
1344 1698
1345 if (prepare_cede_notself (aTHX_ &ta)) 1699 if (prepare_cede_notself (aTHX_ &ta))
1346 { 1700 {
1347 TRANSFER (ta); 1701 TRANSFER (ta, 1);
1348 return 1; 1702 return 1;
1349 } 1703 }
1350 else 1704 else
1351 return 0; 1705 return 0;
1352} 1706}
… …
1358 struct coro *coro = SvSTATE (coro_sv); 1712 struct coro *coro = SvSTATE (coro_sv);
1359 1713
1360 if (flags & CC_TRACE) 1714 if (flags & CC_TRACE)
1361 { 1715 {
1362 if (!coro->cctx) 1716 if (!coro->cctx)
1363 coro->cctx = cctx_new (); 1717 coro->cctx = cctx_new_run ();
1364 else if (!(coro->cctx->flags & CC_TRACE)) 1718 else if (!(coro->cctx->flags & CC_TRACE))
1365 croak ("cannot enable tracing on coroutine with custom stack"); 1719 croak ("cannot enable tracing on coroutine with custom stack");
1366 1720
1367 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1721 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1368 } 1722 }
… …
1371 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1725 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1372 1726
1373 if (coro->flags & CF_RUNNING) 1727 if (coro->flags & CF_RUNNING)
1374 PL_runops = RUNOPS_DEFAULT; 1728 PL_runops = RUNOPS_DEFAULT;
1375 else 1729 else
1376 coro->runops = RUNOPS_DEFAULT; 1730 coro->slot->runops = RUNOPS_DEFAULT;
1731 }
1732}
1733
1734#if 0
1735static int
1736coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1737{
1738 AV *padlist;
1739 AV *av = (AV *)mg->mg_obj;
1740
1741 abort ();
1742
1743 return 0;
1744}
1745
1746static MGVTBL coro_gensub_vtbl = {
1747 0, 0, 0, 0,
1748 coro_gensub_free
1749};
1750#endif
1751
1752/*****************************************************************************/
1753/* PerlIO::cede */
1754
1755typedef struct
1756{
1757 PerlIOBuf base;
1758 NV next, every;
1759} PerlIOCede;
1760
1761static IV
1762PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1763{
1764 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1765
1766 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1767 self->next = nvtime () + self->every;
1768
1769 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1770}
1771
1772static SV *
1773PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1774{
1775 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1776
1777 return newSVnv (self->every);
1778}
1779
1780static IV
1781PerlIOCede_flush (pTHX_ PerlIO *f)
1782{
1783 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1784 double now = nvtime ();
1785
1786 if (now >= self->next)
1377 } 1787 {
1788 api_cede ();
1789 self->next = now + self->every;
1790 }
1791
1792 return PerlIOBuf_flush (aTHX_ f);
1793}
1794
1795static PerlIO_funcs PerlIO_cede =
1796{
1797 sizeof(PerlIO_funcs),
1798 "cede",
1799 sizeof(PerlIOCede),
1800 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1801 PerlIOCede_pushed,
1802 PerlIOBuf_popped,
1803 PerlIOBuf_open,
1804 PerlIOBase_binmode,
1805 PerlIOCede_getarg,
1806 PerlIOBase_fileno,
1807 PerlIOBuf_dup,
1808 PerlIOBuf_read,
1809 PerlIOBuf_unread,
1810 PerlIOBuf_write,
1811 PerlIOBuf_seek,
1812 PerlIOBuf_tell,
1813 PerlIOBuf_close,
1814 PerlIOCede_flush,
1815 PerlIOBuf_fill,
1816 PerlIOBase_eof,
1817 PerlIOBase_error,
1818 PerlIOBase_clearerr,
1819 PerlIOBase_setlinebuf,
1820 PerlIOBuf_get_base,
1821 PerlIOBuf_bufsiz,
1822 PerlIOBuf_get_ptr,
1823 PerlIOBuf_get_cnt,
1824 PerlIOBuf_set_ptrcnt,
1825};
1826
1827/*****************************************************************************/
1828
1829static const CV *ssl_cv; /* for quick consistency check */
1830
1831static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1832static SV *ssl_arg0;
1833static SV *ssl_arg1;
1834
1835/* this restores the stack in the case we patched the entersub, to */
1836/* recreate the stack frame as perl will on following calls */
1837/* since entersub cleared the stack */
1838static OP *
1839pp_restore (pTHX)
1840{
1841 dSP;
1842
1843 PUSHMARK (SP);
1844
1845 EXTEND (SP, 3);
1846 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0;
1847 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1848 PUSHs ((SV *)CvGV (ssl_cv));
1849
1850 RETURNOP (ssl_restore.op_first);
1851}
1852
1853/* declare prototype */
1854XS(XS_Coro__State__set_stacklevel);
1855
1856static OP *
1857pp_set_stacklevel (pTHX)
1858{
1859 dSP;
1860 struct transfer_args ta;
1861 SV **arg = PL_stack_base + TOPMARK + 1;
1862 int items = SP - arg; /* args without function object */
1863
1864 /* do a quick consistency check on the "function" object, and if it isn't */
1865 /* for us, divert to the real entersub */
1866 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1867 return PL_ppaddr[OP_ENTERSUB](aTHX);
1868
1869 /* pop args */
1870 SP = PL_stack_base + POPMARK;
1871
1872 if (!(PL_op->op_flags & OPf_STACKED))
1873 {
1874 /* ampersand-form of call, use @_ instead of stack */
1875 AV *av = GvAV (PL_defgv);
1876 arg = AvARRAY (av);
1877 items = AvFILLp (av) + 1;
1878 }
1879
1880 PUTBACK;
1881 switch (PL_op->op_private & 7)
1882 {
1883 case 0:
1884 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1885 break;
1886
1887 case 1:
1888 if (items != 2)
1889 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1890
1891 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1892 break;
1893
1894 case 2:
1895 prepare_schedule (aTHX_ &ta);
1896 break;
1897
1898 case 3:
1899 prepare_cede (aTHX_ &ta);
1900 break;
1901
1902 case 4:
1903 if (!prepare_cede_notself (aTHX_ &ta))
1904 goto skip;
1905
1906 break;
1907 }
1908
1909 TRANSFER (ta, 0);
1910 SPAGAIN;
1911
1912skip:
1913 PUTBACK;
1914 SSL_TAIL;
1915 SPAGAIN;
1916 RETURN;
1378} 1917}
1379 1918
1380MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 1919MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1381 1920
1382PROTOTYPES: DISABLE 1921PROTOTYPES: DISABLE
1383
1384BOOT:
1385{
1386#ifdef USE_ITHREADS
1387 MUTEX_INIT (&coro_mutex);
1388#endif
1389 BOOT_PAGESIZE;
1390
1391 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1392 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1393
1394 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1395
1396 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1397 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1398 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1399 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1400
1401 main_mainstack = PL_mainstack;
1402 main_top_env = PL_top_env;
1403
1404 while (main_top_env->je_prev)
1405 main_top_env = main_top_env->je_prev;
1406
1407 coroapi.ver = CORO_API_VERSION;
1408 coroapi.transfer = api_transfer;
1409
1410 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1411}
1412
1413SV *
1414new (char *klass, ...)
1415 CODE:
1416{
1417 struct coro *coro;
1418 HV *hv;
1419 int i;
1420
1421 Newz (0, coro, 1, struct coro);
1422 coro->args = newAV ();
1423 coro->flags = CF_NEW;
1424
1425 if (coro_first) coro_first->prev = coro;
1426 coro->next = coro_first;
1427 coro_first = coro;
1428
1429 coro->hv = hv = newHV ();
1430 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1431 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1432
1433 av_extend (coro->args, items - 1);
1434
1435 for (i = 1; i < items; i++)
1436 av_push (coro->args, newSVsv (ST (i)));
1437}
1438 OUTPUT:
1439 RETVAL
1440 1922
1441# these not obviously related functions are all rolled into the same xs 1923# these not obviously related functions are all rolled into the same xs
1442# function to increase chances that they all will call transfer with the same 1924# function to increase chances that they all will call transfer with the same
1443# stack offset 1925# stack offset
1444void 1926void
… …
1448 Coro::schedule = 2 1930 Coro::schedule = 2
1449 Coro::cede = 3 1931 Coro::cede = 3
1450 Coro::cede_notself = 4 1932 Coro::cede_notself = 4
1451 CODE: 1933 CODE:
1452{ 1934{
1453 struct transfer_args ta; 1935 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1454 1936
1455 switch (ix) 1937 /* we patch the op, and then re-run the whole call */
1938 /* we have to put some dummy argument on the stack for this to work */
1939 /* TODO: walk back the opcode chain (but how?), nuke the pp_gv etc. */
1940 ssl_restore.op_next = (OP *)&ssl_restore;
1941 ssl_restore.op_type = OP_NULL;
1942 ssl_restore.op_ppaddr = pp_restore;
1943 ssl_restore.op_first = PL_op;
1944
1945 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1946 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1947
1948 PL_op->op_ppaddr = pp_set_stacklevel;
1949 PL_op->op_private = PL_op->op_private & ~7 | ix; /* we potentially share our private flags with entersub */
1950
1951 PL_op = (OP *)&ssl_restore;
1952}
1953
1954BOOT:
1955{
1956#ifdef USE_ITHREADS
1957 MUTEX_INIT (&coro_lock);
1958# if CORO_PTHREAD
1959 coro_thx = PERL_GET_CONTEXT;
1960# endif
1961#endif
1962 BOOT_PAGESIZE;
1963
1964 ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0);
1965
1966 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1967 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1968
1969 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1970 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1971 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1972
1973 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1974 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1975 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1976
1977 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1978
1979 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1980 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1981 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1982 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1983
1984 main_mainstack = PL_mainstack;
1985 main_top_env = PL_top_env;
1986
1987 while (main_top_env->je_prev)
1988 main_top_env = main_top_env->je_prev;
1989
1990 coroapi.ver = CORO_API_VERSION;
1991 coroapi.rev = CORO_API_REVISION;
1992 coroapi.transfer = api_transfer;
1993
1456 { 1994 {
1457 case 0: 1995 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1458 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1459 ta.next = 0;
1460 break;
1461 1996
1462 case 1: 1997 if (!svp) croak ("Time::HiRes is required");
1463 if (items != 2) 1998 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1464 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1465 1999
1466 prepare_transfer (aTHX_ &ta, ST (0), ST (1)); 2000 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1467 break;
1468
1469 case 2:
1470 prepare_schedule (aTHX_ &ta);
1471 break;
1472
1473 case 3:
1474 prepare_cede (aTHX_ &ta);
1475 break;
1476
1477 case 4:
1478 if (!prepare_cede_notself (aTHX_ &ta))
1479 XSRETURN_EMPTY;
1480
1481 break;
1482 } 2001 }
1483 2002
1484 BARRIER; 2003 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1485 TRANSFER (ta);
1486
1487 if (GIMME_V != G_VOID && ta.next != ta.prev)
1488 XSRETURN_YES;
1489} 2004}
2005
2006SV *
2007new (char *klass, ...)
2008 CODE:
2009{
2010 struct coro *coro;
2011 MAGIC *mg;
2012 HV *hv;
2013 int i;
2014
2015 Newz (0, coro, 1, struct coro);
2016 coro->args = newAV ();
2017 coro->flags = CF_NEW;
2018
2019 if (coro_first) coro_first->prev = coro;
2020 coro->next = coro_first;
2021 coro_first = coro;
2022
2023 coro->hv = hv = newHV ();
2024 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2025 mg->mg_flags |= MGf_DUP;
2026 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2027
2028 av_extend (coro->args, items - 1);
2029 for (i = 1; i < items; i++)
2030 av_push (coro->args, newSVsv (ST (i)));
2031}
2032 OUTPUT:
2033 RETVAL
1490 2034
1491bool 2035bool
1492_destroy (SV *coro_sv) 2036_destroy (SV *coro_sv)
1493 CODE: 2037 CODE:
1494 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2038 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1495 OUTPUT: 2039 OUTPUT:
1496 RETVAL 2040 RETVAL
1497 2041
1498void 2042void
1499_exit (code) 2043_exit (int code)
1500 int code
1501 PROTOTYPE: $ 2044 PROTOTYPE: $
1502 CODE: 2045 CODE:
1503 _exit (code); 2046 _exit (code);
1504 2047
1505int 2048int
1506cctx_stacksize (int new_stacksize = 0) 2049cctx_stacksize (int new_stacksize = 0)
1507 CODE: 2050 CODE:
1508 RETVAL = coro_stacksize; 2051 RETVAL = cctx_stacksize;
1509 if (new_stacksize) 2052 if (new_stacksize)
2053 {
1510 coro_stacksize = new_stacksize; 2054 cctx_stacksize = new_stacksize;
2055 ++cctx_gen;
2056 }
2057 OUTPUT:
2058 RETVAL
2059
2060int
2061cctx_max_idle (int max_idle = 0)
2062 CODE:
2063 RETVAL = cctx_max_idle;
2064 if (max_idle > 1)
2065 cctx_max_idle = max_idle;
1511 OUTPUT: 2066 OUTPUT:
1512 RETVAL 2067 RETVAL
1513 2068
1514int 2069int
1515cctx_count () 2070cctx_count ()
… …
1539call (Coro::State coro, SV *coderef) 2094call (Coro::State coro, SV *coderef)
1540 ALIAS: 2095 ALIAS:
1541 eval = 1 2096 eval = 1
1542 CODE: 2097 CODE:
1543{ 2098{
1544 if (coro->mainstack) 2099 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1545 { 2100 {
1546 struct coro temp; 2101 struct coro temp;
1547 Zero (&temp, 1, struct coro);
1548 2102
1549 if (!(coro->flags & CF_RUNNING)) 2103 if (!(coro->flags & CF_RUNNING))
1550 { 2104 {
2105 PUTBACK;
1551 save_perl (aTHX_ &temp); 2106 save_perl (aTHX_ &temp);
1552 load_perl (aTHX_ coro); 2107 load_perl (aTHX_ coro);
1553 } 2108 }
1554 2109
1555 { 2110 {
1556 dSP; 2111 dSP;
1557 ENTER; 2112 ENTER;
1558 SAVETMPS; 2113 SAVETMPS;
2114 PUTBACK;
2115 PUSHSTACK;
1559 PUSHMARK (SP); 2116 PUSHMARK (SP);
1560 PUTBACK; 2117
1561 if (ix) 2118 if (ix)
1562 eval_sv (coderef, 0); 2119 eval_sv (coderef, 0);
1563 else 2120 else
1564 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2121 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2122
2123 POPSTACK;
1565 SPAGAIN; 2124 SPAGAIN;
1566 FREETMPS; 2125 FREETMPS;
1567 LEAVE; 2126 LEAVE;
1568 PUTBACK; 2127 PUTBACK;
1569 } 2128 }
1570 2129
1571 if (!(coro->flags & CF_RUNNING)) 2130 if (!(coro->flags & CF_RUNNING))
1572 { 2131 {
1573 save_perl (aTHX_ coro); 2132 save_perl (aTHX_ coro);
1574 load_perl (aTHX_ &temp); 2133 load_perl (aTHX_ &temp);
2134 SPAGAIN;
1575 } 2135 }
1576 } 2136 }
1577} 2137}
1578 2138
1579SV * 2139SV *
… …
1588 RETVAL = boolSV (coro->flags & ix); 2148 RETVAL = boolSV (coro->flags & ix);
1589 OUTPUT: 2149 OUTPUT:
1590 RETVAL 2150 RETVAL
1591 2151
1592void 2152void
2153throw (Coro::State self, SV *throw = &PL_sv_undef)
2154 PROTOTYPE: $;$
2155 CODE:
2156 SvREFCNT_dec (self->throw);
2157 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2158
2159void
1593api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2160api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1594 2161
1595SV * 2162SV *
1596has_stack (Coro::State coro) 2163has_cctx (Coro::State coro)
1597 PROTOTYPE: $ 2164 PROTOTYPE: $
1598 CODE: 2165 CODE:
1599 RETVAL = boolSV (!!coro->cctx); 2166 RETVAL = boolSV (!!coro->cctx);
1600 OUTPUT: 2167 OUTPUT:
1601 RETVAL 2168 RETVAL
… …
1606 CODE: 2173 CODE:
1607 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2174 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1608 OUTPUT: 2175 OUTPUT:
1609 RETVAL 2176 RETVAL
1610 2177
1611IV 2178UV
1612rss (Coro::State coro) 2179rss (Coro::State coro)
1613 PROTOTYPE: $ 2180 PROTOTYPE: $
1614 ALIAS: 2181 ALIAS:
1615 usecount = 1 2182 usecount = 1
1616 CODE: 2183 CODE:
… …
1620 case 1: RETVAL = coro->usecount; break; 2187 case 1: RETVAL = coro->usecount; break;
1621 } 2188 }
1622 OUTPUT: 2189 OUTPUT:
1623 RETVAL 2190 RETVAL
1624 2191
2192void
2193force_cctx ()
2194 CODE:
2195 struct coro *coro = SvSTATE (coro_current);
2196 coro->cctx->idle_sp = 0;
2197
2198void
2199swap_defsv (Coro::State self)
2200 PROTOTYPE: $
2201 ALIAS:
2202 swap_defav = 1
2203 CODE:
2204 if (!self->slot)
2205 croak ("cannot swap state with coroutine that has no saved state");
2206 else
2207 {
2208 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2209 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2210
2211 SV *tmp = *src; *src = *dst; *dst = tmp;
2212 }
1625 2213
1626MODULE = Coro::State PACKAGE = Coro 2214MODULE = Coro::State PACKAGE = Coro
1627 2215
1628BOOT: 2216BOOT:
1629{ 2217{
1630 int i; 2218 int i;
1631 2219
1632 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1633 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1634 av_async_pool = get_av ("Coro::async_pool", TRUE); 2220 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2221 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2222 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1635 2223
1636 coro_current = get_sv ("Coro::current", FALSE); 2224 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1637 SvREADONLY_on (coro_current); 2225 SvREADONLY_on (coro_current);
1638 2226
1639 coro_stash = gv_stashpv ("Coro", TRUE); 2227 coro_stash = gv_stashpv ("Coro", TRUE);
1640 2228
1641 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2229 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1642 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2230 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1643 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2231 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1644 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2232 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1647 2235
1648 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2236 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1649 coro_ready[i] = newAV (); 2237 coro_ready[i] = newAV ();
1650 2238
1651 { 2239 {
1652 SV *sv = perl_get_sv("Coro::API", 1); 2240 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1653 2241
1654 coroapi.schedule = api_schedule; 2242 coroapi.schedule = api_schedule;
1655 coroapi.cede = api_cede; 2243 coroapi.cede = api_cede;
1656 coroapi.cede_notself = api_cede_notself; 2244 coroapi.cede_notself = api_cede_notself;
1657 coroapi.ready = api_ready; 2245 coroapi.ready = api_ready;
… …
1668void 2256void
1669_set_current (SV *current) 2257_set_current (SV *current)
1670 PROTOTYPE: $ 2258 PROTOTYPE: $
1671 CODE: 2259 CODE:
1672 SvREFCNT_dec (SvRV (coro_current)); 2260 SvREFCNT_dec (SvRV (coro_current));
1673 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2261 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2262
2263void
2264_set_readyhook (SV *hook)
2265 PROTOTYPE: $
2266 CODE:
2267 LOCK;
2268 SvREFCNT_dec (coro_readyhook);
2269 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2270 UNLOCK;
1674 2271
1675int 2272int
1676prio (Coro::State coro, int newprio = 0) 2273prio (Coro::State coro, int newprio = 0)
1677 ALIAS: 2274 ALIAS:
1678 nice = 1 2275 nice = 1
… …
1721 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2318 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1722 AV *invoke_av; 2319 AV *invoke_av;
1723 int i, len; 2320 int i, len;
1724 2321
1725 if (!invoke) 2322 if (!invoke)
2323 {
2324 SV *old = PL_diehook;
2325 PL_diehook = 0;
2326 SvREFCNT_dec (old);
1726 croak ("\3terminate\2\n"); 2327 croak ("\3async_pool terminate\2\n");
2328 }
1727 2329
1728 SvREFCNT_dec (coro->saved_deffh); 2330 SvREFCNT_dec (coro->saved_deffh);
1729 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2331 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1730 2332
1731 hv_store (hv, "desc", sizeof ("desc") - 1, 2333 hv_store (hv, "desc", sizeof ("desc") - 1,
1732 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2334 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1733 2335
1734 invoke_av = (AV *)SvRV (invoke); 2336 invoke_av = (AV *)SvRV (invoke);
… …
1738 2340
1739 if (len > 0) 2341 if (len > 0)
1740 { 2342 {
1741 av_fill (defav, len - 1); 2343 av_fill (defav, len - 1);
1742 for (i = 0; i < len; ++i) 2344 for (i = 0; i < len; ++i)
1743 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2345 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1744 } 2346 }
1745 2347
1746 SvREFCNT_dec (invoke); 2348 SvREFCNT_dec (invoke);
1747} 2349}
1748 2350
… …
1755 sv_setsv (cb, &PL_sv_undef); 2357 sv_setsv (cb, &PL_sv_undef);
1756 2358
1757 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2359 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1758 coro->saved_deffh = 0; 2360 coro->saved_deffh = 0;
1759 2361
1760 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2362 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1761 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2363 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2364 {
2365 SV *old = PL_diehook;
2366 PL_diehook = 0;
2367 SvREFCNT_dec (old);
1762 croak ("\3terminate\2\n"); 2368 croak ("\3async_pool terminate\2\n");
2369 }
1763 2370
1764 av_clear (GvAV (PL_defgv)); 2371 av_clear (GvAV (PL_defgv));
1765 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2372 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1766 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2373 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1767 2374
… …
1771 api_trace (coro_current, 0); 2378 api_trace (coro_current, 0);
1772 2379
1773 av_push (av_async_pool, newSVsv (coro_current)); 2380 av_push (av_async_pool, newSVsv (coro_current));
1774} 2381}
1775 2382
2383#if 0
2384
2385void
2386_generator_call (...)
2387 PROTOTYPE: @
2388 PPCODE:
2389 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2390 xxxx
2391 abort ();
2392
2393SV *
2394gensub (SV *sub, ...)
2395 PROTOTYPE: &;@
2396 CODE:
2397{
2398 struct coro *coro;
2399 MAGIC *mg;
2400 CV *xcv;
2401 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2402 int i;
2403
2404 CvGV (ncv) = CvGV (cv);
2405 CvFILE (ncv) = CvFILE (cv);
2406
2407 Newz (0, coro, 1, struct coro);
2408 coro->args = newAV ();
2409 coro->flags = CF_NEW;
2410
2411 av_extend (coro->args, items - 1);
2412 for (i = 1; i < items; i++)
2413 av_push (coro->args, newSVsv (ST (i)));
2414
2415 CvISXSUB_on (ncv);
2416 CvXSUBANY (ncv).any_ptr = (void *)coro;
2417
2418 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2419
2420 CvXSUB (ncv) = CvXSUB (xcv);
2421 CvANON_on (ncv);
2422
2423 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2424 RETVAL = newRV_noinc ((SV *)ncv);
2425}
2426 OUTPUT:
2427 RETVAL
2428
2429#endif
2430
1776 2431
1777MODULE = Coro::State PACKAGE = Coro::AIO 2432MODULE = Coro::State PACKAGE = Coro::AIO
1778 2433
1779SV * 2434void
1780_get_state () 2435_get_state (SV *self)
1781 CODE: 2436 PPCODE:
1782{ 2437{
1783 struct io_state *data; 2438 AV *defav = GvAV (PL_defgv);
1784 2439 AV *av = newAV ();
2440 int i;
1785 RETVAL = newSV (sizeof (struct io_state)); 2441 SV *data_sv = newSV (sizeof (struct io_state));
1786 data = (struct io_state *)SvPVX (RETVAL); 2442 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1787 SvCUR_set (RETVAL, sizeof (struct io_state)); 2443 SvCUR_set (data_sv, sizeof (struct io_state));
1788 SvPOK_only (RETVAL); 2444 SvPOK_only (data_sv);
1789 2445
1790 data->errorno = errno; 2446 data->errorno = errno;
1791 data->laststype = PL_laststype; 2447 data->laststype = PL_laststype;
1792 data->laststatval = PL_laststatval; 2448 data->laststatval = PL_laststatval;
1793 data->statcache = PL_statcache; 2449 data->statcache = PL_statcache;
2450
2451 av_extend (av, AvFILLp (defav) + 1 + 1);
2452
2453 for (i = 0; i <= AvFILLp (defav); ++i)
2454 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2455
2456 av_push (av, data_sv);
2457
2458 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2459
2460 api_ready (self);
1794} 2461}
1795 OUTPUT:
1796 RETVAL
1797 2462
1798void 2463void
1799_set_state (char *data_) 2464_set_state (SV *state)
1800 PROTOTYPE: $ 2465 PROTOTYPE: $
1801 CODE: 2466 PPCODE:
1802{ 2467{
1803 struct io_state *data = (void *)data_; 2468 AV *av = (AV *)SvRV (state);
2469 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2470 int i;
1804 2471
1805 errno = data->errorno; 2472 errno = data->errorno;
1806 PL_laststype = data->laststype; 2473 PL_laststype = data->laststype;
1807 PL_laststatval = data->laststatval; 2474 PL_laststatval = data->laststatval;
1808 PL_statcache = data->statcache; 2475 PL_statcache = data->statcache;
1809}
1810 2476
2477 EXTEND (SP, AvFILLp (av));
2478 for (i = 0; i < AvFILLp (av); ++i)
2479 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2480}
2481
2482
2483MODULE = Coro::State PACKAGE = Coro::AnyEvent
2484
2485BOOT:
2486 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2487
2488SV *
2489_schedule (...)
2490 PROTOTYPE: @
2491 CODE:
2492{
2493 static int incede;
2494
2495 api_cede_notself ();
2496
2497 ++incede;
2498 while (coro_nready >= incede && api_cede ())
2499 ;
2500
2501 sv_setsv (sv_activity, &PL_sv_undef);
2502 if (coro_nready >= incede)
2503 {
2504 PUSHMARK (SP);
2505 PUTBACK;
2506 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2507 SPAGAIN;
2508 }
2509
2510 --incede;
2511}
2512
2513
2514MODULE = Coro::State PACKAGE = PerlIO::cede
2515
2516BOOT:
2517 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2518

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