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Comparing Coro/Coro/State.xs (file contents):
Revision 1.74 by root, Mon Oct 23 22:49:09 2006 UTC vs.
Revision 1.80 by root, Thu Nov 2 20:00:00 2006 UTC

… …
28# define IS_PADCONST(v) 0 28# define IS_PADCONST(v) 0
29# endif 29# endif
30#endif 30#endif
31 31
32#include <errno.h> 32#include <errno.h>
33#include <signal.h> 33
34#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35# undef STACKGUARD
36#endif
37
38#ifndef STACKGUARD
39# define STACKGUARD 0
40#endif
34 41
35#ifdef HAVE_MMAP 42#ifdef HAVE_MMAP
36# include <unistd.h> 43# include <unistd.h>
37# include <sys/mman.h> 44# include <sys/mman.h>
38# ifndef MAP_ANONYMOUS 45# ifndef MAP_ANONYMOUS
39# ifdef MAP_ANON 46# ifdef MAP_ANON
40# define MAP_ANONYMOUS MAP_ANON 47# define MAP_ANONYMOUS MAP_ANON
41# else 48# else
42# undef HAVE_MMAP 49# undef HAVE_MMAP
43# endif 50# endif
51# endif
52# include <limits.h>
53# ifndef PAGESIZE
54# define PAGESIZE pagesize
55# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
56static long pagesize;
57# else
58# define BOOT_PAGESIZE
44# endif 59# endif
45#endif 60#endif
46 61
47#define SUB_INIT "Coro::State::initialize" 62#define SUB_INIT "Coro::State::initialize"
48#define UCORO_STATE "_coro_state" 63#define UCORO_STATE "_coro_state"
… …
140}; 155};
141 156
142typedef struct coro *Coro__State; 157typedef struct coro *Coro__State;
143typedef struct coro *Coro__State_or_hashref; 158typedef struct coro *Coro__State_or_hashref;
144 159
145/* mostly copied from op.c:cv_clone2 */ 160static AV *
146STATIC AV * 161coro_clone_padlist (pTHX_ CV *cv)
147clone_padlist (pTHX_ AV *protopadlist)
148{ 162{
149 AV *av; 163 AV *padlist = CvPADLIST (cv);
150 I32 ix;
151 AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE);
152 AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE);
153 SV **pname = AvARRAY (protopad_name);
154 SV **ppad = AvARRAY (protopad);
155 I32 fname = AvFILLp (protopad_name);
156 I32 fpad = AvFILLp (protopad);
157 AV *newpadlist, *newpad_name, *newpad; 164 AV *newpadlist, *newpad;
158 SV **npad;
159
160 newpad_name = newAV ();
161 for (ix = fname; ix >= 0; ix--)
162 av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
163
164 newpad = newAV ();
165 av_fill (newpad, AvFILLp (protopad));
166 npad = AvARRAY (newpad);
167 165
168 newpadlist = newAV (); 166 newpadlist = newAV ();
169 AvREAL_off (newpadlist); 167 AvREAL_off (newpadlist);
170 av_store (newpadlist, 0, (SV *) newpad_name); 168#if PERL_VERSION < 9
169 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
170#else
171 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
172#endif
173 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
174 --AvFILLp (padlist);
175
176 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
171 av_store (newpadlist, 1, (SV *) newpad); 177 av_store (newpadlist, 1, (SV *)newpad);
172
173 av = newAV (); /* will be @_ */
174 av_extend (av, 0);
175 av_store (newpad, 0, (SV *) av);
176 AvREIFY_on (av);
177
178 for (ix = fpad; ix > 0; ix--)
179 {
180 SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
181
182 if (namesv && namesv != &PL_sv_undef)
183 {
184 char *name = SvPVX (namesv); /* XXX */
185
186 if (SvFLAGS (namesv) & SVf_FAKE || *name == '&')
187 { /* lexical from outside? */
188 npad[ix] = SvREFCNT_inc (ppad[ix]);
189 }
190 else
191 { /* our own lexical */
192 SV *sv;
193 if (*name == '&')
194 sv = SvREFCNT_inc (ppad[ix]);
195 else if (*name == '@')
196 sv = (SV *) newAV ();
197 else if (*name == '%')
198 sv = (SV *) newHV ();
199 else
200 sv = NEWSV (0, 0);
201
202#ifdef SvPADBUSY
203 if (!SvPADBUSY (sv))
204#endif
205 SvPADMY_on (sv);
206
207 npad[ix] = sv;
208 }
209 }
210 else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix]))
211 {
212 npad[ix] = SvREFCNT_inc (ppad[ix]);
213 }
214 else
215 {
216 SV *sv = NEWSV (0, 0);
217 SvPADTMP_on (sv);
218 npad[ix] = sv;
219 }
220 }
221
222#if 0 /* return -ENOTUNDERSTOOD */
223 /* Now that vars are all in place, clone nested closures. */
224
225 for (ix = fpad; ix > 0; ix--) {
226 SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
227 if (namesv
228 && namesv != &PL_sv_undef
229 && !(SvFLAGS(namesv) & SVf_FAKE)
230 && *SvPVX(namesv) == '&'
231 && CvCLONE(ppad[ix]))
232 {
233 CV *kid = cv_clone((CV*)ppad[ix]);
234 SvREFCNT_dec(ppad[ix]);
235 CvCLONE_on(kid);
236 SvPADMY_on(kid);
237 npad[ix] = (SV*)kid;
238 }
239 }
240#endif
241 178
242 return newpadlist; 179 return newpadlist;
243} 180}
244 181
245STATIC void 182static void
246free_padlist (pTHX_ AV *padlist) 183free_padlist (pTHX_ AV *padlist)
247{ 184{
248 /* may be during global destruction */ 185 /* may be during global destruction */
249 if (SvREFCNT (padlist)) 186 if (SvREFCNT (padlist))
250 { 187 {
… …
264 201
265 SvREFCNT_dec ((SV*)padlist); 202 SvREFCNT_dec ((SV*)padlist);
266 } 203 }
267} 204}
268 205
269STATIC int 206static int
270coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 207coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
271{ 208{
272 AV *padlist; 209 AV *padlist;
273 AV *av = (AV *)mg->mg_obj; 210 AV *av = (AV *)mg->mg_obj;
274 211
275 /* casting is fun. */ 212 /* casting is fun. */
276 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 213 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
277 free_padlist (aTHX_ padlist); 214 free_padlist (aTHX_ padlist);
278 215
279 SvREFCNT_dec (av); 216 SvREFCNT_dec (av);
217
218 return 0;
280} 219}
281 220
282#define PERL_MAGIC_coro PERL_MAGIC_ext 221#define PERL_MAGIC_coro PERL_MAGIC_ext
283 222
284static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 223static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
285 224
286/* the next two functions merely cache the padlists */ 225/* the next two functions merely cache the padlists */
287STATIC void 226static void
288get_padlist (pTHX_ CV *cv) 227get_padlist (pTHX_ CV *cv)
289{ 228{
290 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 229 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
291 230
292 if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) 231 if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
293 CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); 232 CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj);
294 else 233 else
234 {
235#if 0
236 /* this should work - but it doesn't :( */
237 CV *cp = Perl_cv_clone (aTHX_ cv);
238 CvPADLIST (cv) = CvPADLIST (cp);
239 CvPADLIST (cp) = 0;
240 SvREFCNT_dec (cp);
241#else
295 CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv)); 242 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
243#endif
244 }
296} 245}
297 246
298STATIC void 247static void
299put_padlist (pTHX_ CV *cv) 248put_padlist (pTHX_ CV *cv)
300{ 249{
301 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 250 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
302 251
303 if (!mg) 252 if (!mg)
… …
420 } 369 }
421 370
422 PUSHs ((SV *)CvPADLIST(cv)); 371 PUSHs ((SV *)CvPADLIST(cv));
423 PUSHs ((SV *)cv); 372 PUSHs ((SV *)cv);
424 373
425 get_padlist (aTHX_ cv); /* this is a monster */ 374 get_padlist (aTHX_ cv);
426 } 375 }
427 } 376 }
428#ifdef CXt_FORMAT 377#ifdef CXt_FORMAT
429 else if (CxTYPE(cx) == CXt_FORMAT) 378 else if (CxTYPE(cx) == CXt_FORMAT)
430 { 379 {
… …
490 * allocate various perl stacks. This is an exact copy 439 * allocate various perl stacks. This is an exact copy
491 * of perl.c:init_stacks, except that it uses less memory 440 * of perl.c:init_stacks, except that it uses less memory
492 * on the (sometimes correct) assumption that coroutines do 441 * on the (sometimes correct) assumption that coroutines do
493 * not usually need a lot of stackspace. 442 * not usually need a lot of stackspace.
494 */ 443 */
495STATIC void 444static void
496coro_init_stacks (pTHX) 445coro_init_stacks (pTHX)
497{ 446{
498 LOCK; 447 LOCK;
499 448
500 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); 449 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
… …
537} 486}
538 487
539/* 488/*
540 * destroy the stacks, the callchain etc... 489 * destroy the stacks, the callchain etc...
541 */ 490 */
542STATIC void 491static void
543destroy_stacks(pTHX) 492destroy_stacks(pTHX)
544{ 493{
545 if (!IN_DESTRUCT) 494 if (!IN_DESTRUCT)
546 { 495 {
547 /* is this ugly, I ask? */ 496 /* is this ugly, I ask? */
… …
598 stack->gencnt = ctx->gencnt = 0; 547 stack->gencnt = ctx->gencnt = 0;
599 548
600 if (alloc) 549 if (alloc)
601 { 550 {
602#if HAVE_MMAP 551#if HAVE_MMAP
603 stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */ 552 stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
604 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 553 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
605 if (stack->sptr == (void *)-1) 554 if (stack->sptr != (void *)-1)
606#endif
607 { 555 {
608 /*FIXME*//*D*//* reasonable stack size! */ 556# if STACKGUARD
557 mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
558# endif
559 }
560 else
561#endif
562 {
609 stack->ssize = - (STACKSIZE * sizeof (long)); 563 stack->ssize = - (STACKSIZE * (long)sizeof (long));
610 New (0, stack->sptr, STACKSIZE, long); 564 New (0, stack->sptr, STACKSIZE, long);
611 } 565 }
612 } 566 }
613 else 567 else
614 stack->sptr = 0; 568 stack->sptr = 0;
… …
675 } 629 }
676 else 630 else
677 { 631 {
678 UNOP myop; 632 UNOP myop;
679 633
680 PL_op = (OP *)&myop;
681
682 Zero(&myop, 1, UNOP); 634 Zero(&myop, 1, UNOP);
683 myop.op_next = Nullop; 635 myop.op_next = Nullop;
684 myop.op_flags = OPf_WANT_VOID; 636 myop.op_flags = OPf_WANT_VOID;
637
638 PL_op = (OP *)&myop;
685 639
686 PUSHMARK(SP); 640 PUSHMARK(SP);
687 XPUSHs (sub_init); 641 XPUSHs (sub_init);
688 /* 642 /*
689 * the next line is slightly wrong, as PL_op->op_next 643 * the next line is slightly wrong, as PL_op->op_next
… …
706 /* 660 /*
707 * this is a _very_ stripped down perl interpreter ;) 661 * this is a _very_ stripped down perl interpreter ;)
708 */ 662 */
709 dTHX; 663 dTHX;
710 Coro__State ctx = (Coro__State)arg; 664 Coro__State ctx = (Coro__State)arg;
711 JMPENV coro_start_env;
712 665
713 PL_top_env = &ctx->start_env; 666 PL_top_env = &ctx->start_env;
714 667
715 ctx->cursp = 0; 668 ctx->cursp = 0;
716 PL_op = PL_op->op_next; 669 PL_op = PL_op->op_next;
717 CALLRUNOPS(aTHX); 670 CALLRUNOPS(aTHX);
718 671
719 abort (); 672 abort ();
720} 673}
721 674
722STATIC void 675static void
723transfer (pTHX_ struct coro *prev, struct coro *next, int flags) 676transfer (pTHX_ struct coro *prev, struct coro *next, int flags)
724{ 677{
725 dSTACKLEVEL; 678 dSTACKLEVEL;
726 679
727 if (prev != next) 680 if (prev != next)
… …
839 if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \ 792 if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \
840 croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ 793 croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
841 \ 794 \
842 } while(0) 795 } while(0)
843 796
844#define SvSTATE(sv) (struct coro *)SvIV (sv) 797#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))
845 798
846static void 799static void
847api_transfer(pTHX_ SV *prev, SV *next, int flags) 800api_transfer(pTHX_ SV *prev, SV *next, int flags)
848{ 801{
849 SV_CORO (prev, "Coro::transfer"); 802 SV_CORO (prev, "Coro::transfer");
… …
966BOOT: 919BOOT:
967{ /* {} necessary for stoopid perl-5.6.x */ 920{ /* {} necessary for stoopid perl-5.6.x */
968#ifdef USE_ITHREADS 921#ifdef USE_ITHREADS
969 MUTEX_INIT (&coro_mutex); 922 MUTEX_INIT (&coro_mutex);
970#endif 923#endif
924 BOOT_PAGESIZE;
971 925
972 ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); 926 ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
973 PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); 927 PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
974 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 928 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
975 929
… …
1000 /*coro->mainstack = 0; *//*actual work is done inside transfer */ 954 /*coro->mainstack = 0; *//*actual work is done inside transfer */
1001 /*coro->stack = 0;*/ 955 /*coro->stack = 0;*/
1002 956
1003 /* same as JMPENV_BOOTSTRAP */ 957 /* same as JMPENV_BOOTSTRAP */
1004 /* we might be able to recycle start_env, but safe is safe */ 958 /* we might be able to recycle start_env, but safe is safe */
1005 /*Zero(&coro->start_env, 1, JMPENV);*/ 959 /*Zero (&coro->start_env, 1, JMPENV);*/
1006 coro->start_env.je_ret = -1; 960 coro->start_env.je_ret = -1;
1007 coro->start_env.je_mustcatch = TRUE; 961 coro->start_env.je_mustcatch = TRUE;
1008 962
1009 RETVAL = coro; 963 RETVAL = coro;
1010 OUTPUT: 964 OUTPUT:
… …
1080 av_fill (defav, items - 1); 1034 av_fill (defav, items - 1);
1081 while (items--) 1035 while (items--)
1082 av_store (defav, items, SvREFCNT_inc (ST(items))); 1036 av_store (defav, items, SvREFCNT_inc (ST(items)));
1083 1037
1084 sv = av_pop ((AV *)SvRV (yieldstack)); 1038 sv = av_pop ((AV *)SvRV (yieldstack));
1085 prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); 1039 prev = INT2PTR (struct coro *, SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))));
1086 next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); 1040 next = INT2PTR (struct coro *, SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))));
1087 SvREFCNT_dec (sv); 1041 SvREFCNT_dec (sv);
1088 1042
1089 transfer (aTHX_ prev, next, 0); 1043 transfer (aTHX_ prev, next, 0);
1090 1044
1091MODULE = Coro::State PACKAGE = Coro 1045MODULE = Coro::State PACKAGE = Coro

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