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Comparing Coro/Coro/State.xs (file contents):
Revision 1.76 by root, Thu Oct 26 08:45:56 2006 UTC vs.
Revision 1.81 by root, Fri Nov 3 00:56:03 2006 UTC

… …
29# endif 29# endif
30#endif 30#endif
31 31
32#include <errno.h> 32#include <errno.h>
33 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
41
34#ifdef HAVE_MMAP 42#ifdef HAVE_MMAP
35# include <unistd.h> 43# include <unistd.h>
36# include <sys/mman.h> 44# include <sys/mman.h>
37# ifndef MAP_ANONYMOUS 45# ifndef MAP_ANONYMOUS
38# ifdef MAP_ANON 46# ifdef MAP_ANON
39# define MAP_ANONYMOUS MAP_ANON 47# define MAP_ANONYMOUS MAP_ANON
40# else 48# else
41# undef HAVE_MMAP 49# undef HAVE_MMAP
42# endif 50# endif
43# 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
59# endif
44#endif 60#endif
45 61
46#define SUB_INIT "Coro::State::initialize" 62#define SUB_INIT "Coro::State::initialize"
47#define UCORO_STATE "_coro_state" 63#define UCORO_STATE "_coro_state"
48 64
… …
84 void *sptr; 100 void *sptr;
85 long ssize; /* positive == mmap, otherwise malloc */ 101 long ssize; /* positive == mmap, otherwise malloc */
86} coro_stack; 102} coro_stack;
87 103
88struct coro { 104struct coro {
89 /* the top-level JMPENV for each coroutine, needed to catch dies. */
90 JMPENV start_env;
91
92 /* the optional C context */ 105 /* the optional C context */
93 coro_stack *stack; 106 coro_stack *stack;
94 void *cursp; 107 void *cursp;
95 int gencnt; 108 int gencnt;
96 109
… …
139}; 152};
140 153
141typedef struct coro *Coro__State; 154typedef struct coro *Coro__State;
142typedef struct coro *Coro__State_or_hashref; 155typedef struct coro *Coro__State_or_hashref;
143 156
144/* mostly copied from op.c:cv_clone2 */ 157static AV *
145STATIC AV * 158coro_clone_padlist (pTHX_ CV *cv)
146clone_padlist (pTHX_ AV *protopadlist)
147{ 159{
148 AV *av; 160 AV *padlist = CvPADLIST (cv);
149 I32 ix;
150 AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE);
151 AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE);
152 SV **pname = AvARRAY (protopad_name);
153 SV **ppad = AvARRAY (protopad);
154 I32 fname = AvFILLp (protopad_name);
155 I32 fpad = AvFILLp (protopad);
156 AV *newpadlist, *newpad_name, *newpad; 161 AV *newpadlist, *newpad;
157 SV **npad;
158
159 newpad_name = newAV ();
160 for (ix = fname; ix >= 0; ix--)
161 av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
162
163 newpad = newAV ();
164 av_fill (newpad, AvFILLp (protopad));
165 npad = AvARRAY (newpad);
166 162
167 newpadlist = newAV (); 163 newpadlist = newAV ();
168 AvREAL_off (newpadlist); 164 AvREAL_off (newpadlist);
169 av_store (newpadlist, 0, (SV *) newpad_name); 165#if PERL_VERSION < 9
166 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
167#else
168 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
169#endif
170 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
171 --AvFILLp (padlist);
172
173 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
170 av_store (newpadlist, 1, (SV *) newpad); 174 av_store (newpadlist, 1, (SV *)newpad);
171
172 av = newAV (); /* will be @_ */
173 av_extend (av, 0);
174 av_store (newpad, 0, (SV *) av);
175 AvREIFY_on (av);
176
177 for (ix = fpad; ix > 0; ix--)
178 {
179 SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
180
181 if (namesv && namesv != &PL_sv_undef)
182 {
183 char *name = SvPVX (namesv); /* XXX */
184
185 if (SvFLAGS (namesv) & SVf_FAKE || *name == '&')
186 { /* lexical from outside? */
187 npad[ix] = SvREFCNT_inc (ppad[ix]);
188 }
189 else
190 { /* our own lexical */
191 SV *sv;
192 if (*name == '&')
193 sv = SvREFCNT_inc (ppad[ix]);
194 else if (*name == '@')
195 sv = (SV *) newAV ();
196 else if (*name == '%')
197 sv = (SV *) newHV ();
198 else
199 sv = NEWSV (0, 0);
200
201#ifdef SvPADBUSY
202 if (!SvPADBUSY (sv))
203#endif
204 SvPADMY_on (sv);
205
206 npad[ix] = sv;
207 }
208 }
209 else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix]))
210 {
211 npad[ix] = SvREFCNT_inc (ppad[ix]);
212 }
213 else
214 {
215 SV *sv = NEWSV (0, 0);
216 SvPADTMP_on (sv);
217 npad[ix] = sv;
218 }
219 }
220
221#if 0 /* return -ENOTUNDERSTOOD */
222 /* Now that vars are all in place, clone nested closures. */
223
224 for (ix = fpad; ix > 0; ix--) {
225 SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
226 if (namesv
227 && namesv != &PL_sv_undef
228 && !(SvFLAGS(namesv) & SVf_FAKE)
229 && *SvPVX(namesv) == '&'
230 && CvCLONE(ppad[ix]))
231 {
232 CV *kid = cv_clone((CV*)ppad[ix]);
233 SvREFCNT_dec(ppad[ix]);
234 CvCLONE_on(kid);
235 SvPADMY_on(kid);
236 npad[ix] = (SV*)kid;
237 }
238 }
239#endif
240 175
241 return newpadlist; 176 return newpadlist;
242} 177}
243 178
244STATIC void 179static void
245free_padlist (pTHX_ AV *padlist) 180free_padlist (pTHX_ AV *padlist)
246{ 181{
247 /* may be during global destruction */ 182 /* may be during global destruction */
248 if (SvREFCNT (padlist)) 183 if (SvREFCNT (padlist))
249 { 184 {
… …
263 198
264 SvREFCNT_dec ((SV*)padlist); 199 SvREFCNT_dec ((SV*)padlist);
265 } 200 }
266} 201}
267 202
268STATIC int 203static int
269coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 204coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
270{ 205{
271 AV *padlist; 206 AV *padlist;
272 AV *av = (AV *)mg->mg_obj; 207 AV *av = (AV *)mg->mg_obj;
273 208
… …
283#define PERL_MAGIC_coro PERL_MAGIC_ext 218#define PERL_MAGIC_coro PERL_MAGIC_ext
284 219
285static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 220static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
286 221
287/* the next two functions merely cache the padlists */ 222/* the next two functions merely cache the padlists */
288STATIC void 223static void
289get_padlist (pTHX_ CV *cv) 224get_padlist (pTHX_ CV *cv)
290{ 225{
291 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 226 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
292 227
293 if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) 228 if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)
294 CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); 229 CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj);
295 else 230 else
231 {
232#if 0
233 /* this should work - but it doesn't :( */
234 CV *cp = Perl_cv_clone (aTHX_ cv);
235 CvPADLIST (cv) = CvPADLIST (cp);
236 CvPADLIST (cp) = 0;
237 SvREFCNT_dec (cp);
238#else
296 CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv)); 239 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
240#endif
241 }
297} 242}
298 243
299STATIC void 244static void
300put_padlist (pTHX_ CV *cv) 245put_padlist (pTHX_ CV *cv)
301{ 246{
302 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 247 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
303 248
304 if (!mg) 249 if (!mg)
… …
421 } 366 }
422 367
423 PUSHs ((SV *)CvPADLIST(cv)); 368 PUSHs ((SV *)CvPADLIST(cv));
424 PUSHs ((SV *)cv); 369 PUSHs ((SV *)cv);
425 370
426 get_padlist (aTHX_ cv); /* this is a monster */ 371 get_padlist (aTHX_ cv);
427 } 372 }
428 } 373 }
429#ifdef CXt_FORMAT 374#ifdef CXt_FORMAT
430 else if (CxTYPE(cx) == CXt_FORMAT) 375 else if (CxTYPE(cx) == CXt_FORMAT)
431 { 376 {
… …
491 * allocate various perl stacks. This is an exact copy 436 * allocate various perl stacks. This is an exact copy
492 * of perl.c:init_stacks, except that it uses less memory 437 * of perl.c:init_stacks, except that it uses less memory
493 * on the (sometimes correct) assumption that coroutines do 438 * on the (sometimes correct) assumption that coroutines do
494 * not usually need a lot of stackspace. 439 * not usually need a lot of stackspace.
495 */ 440 */
496STATIC void 441static void
497coro_init_stacks (pTHX) 442coro_init_stacks (pTHX)
498{ 443{
499 LOCK; 444 LOCK;
500 445
501 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); 446 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
… …
538} 483}
539 484
540/* 485/*
541 * destroy the stacks, the callchain etc... 486 * destroy the stacks, the callchain etc...
542 */ 487 */
543STATIC void 488static void
544destroy_stacks(pTHX) 489destroy_stacks(pTHX)
545{ 490{
546 if (!IN_DESTRUCT) 491 if (!IN_DESTRUCT)
547 { 492 {
548 /* is this ugly, I ask? */ 493 /* is this ugly, I ask? */
… …
599 stack->gencnt = ctx->gencnt = 0; 544 stack->gencnt = ctx->gencnt = 0;
600 545
601 if (alloc) 546 if (alloc)
602 { 547 {
603#if HAVE_MMAP 548#if HAVE_MMAP
604 stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */ 549 stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
605 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 550 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
606 if (stack->sptr == (void *)-1) 551 if (stack->sptr != (void *)-1)
552 {
553# if STACKGUARD
554 mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
555# endif
556 }
557 else
607#endif 558#endif
608 { 559 {
609 stack->ssize = - (STACKSIZE * (long)sizeof (long)); 560 stack->ssize = - (STACKSIZE * (long)sizeof (long));
610 New (0, stack->sptr, STACKSIZE, long); 561 New (0, stack->sptr, STACKSIZE, long);
611 } 562 }
… …
675 } 626 }
676 else 627 else
677 { 628 {
678 UNOP myop; 629 UNOP myop;
679 630
680 PL_op = (OP *)&myop;
681
682 Zero(&myop, 1, UNOP); 631 Zero(&myop, 1, UNOP);
683 myop.op_next = Nullop; 632 myop.op_next = Nullop;
684 myop.op_flags = OPf_WANT_VOID; 633 myop.op_flags = OPf_WANT_VOID;
634
635 PL_op = (OP *)&myop;
685 636
686 PUSHMARK(SP); 637 PUSHMARK(SP);
687 XPUSHs (sub_init); 638 XPUSHs (sub_init);
688 /* 639 /*
689 * the next line is slightly wrong, as PL_op->op_next 640 * the next line is slightly wrong, as PL_op->op_next
… …
707 * this is a _very_ stripped down perl interpreter ;) 658 * this is a _very_ stripped down perl interpreter ;)
708 */ 659 */
709 dTHX; 660 dTHX;
710 Coro__State ctx = (Coro__State)arg; 661 Coro__State ctx = (Coro__State)arg;
711 662
712 PL_top_env = &ctx->start_env; 663 PL_top_env = &PL_start_env;
713 664
714 ctx->cursp = 0; 665 ctx->cursp = 0;
715 PL_op = PL_op->op_next; 666 PL_op = PL_op->op_next;
716 CALLRUNOPS(aTHX); 667 CALLRUNOPS(aTHX);
717 668
718 abort (); 669 abort ();
719} 670}
720 671
721STATIC void 672static void
722transfer (pTHX_ struct coro *prev, struct coro *next, int flags) 673transfer (pTHX_ struct coro *prev, struct coro *next, int flags)
723{ 674{
724 dSTACKLEVEL; 675 dSTACKLEVEL;
725 676
726 if (prev != next) 677 if (prev != next)
727 { 678 {
679 /* has this coro been created yet? */
728 if (next->mainstack) 680 if (next->mainstack)
729 { 681 {
730 LOCK; 682 LOCK;
731 SAVE (prev, flags); 683 SAVE (prev, flags);
732 LOAD (next); 684 LOAD (next);
… …
771 { 723 {
772 LOCK; 724 LOCK;
773 SAVE (prev, -1); /* first get rid of the old state */ 725 SAVE (prev, -1); /* first get rid of the old state */
774 UNLOCK; 726 UNLOCK;
775 727
728 /* create the coroutine for the first time */
776 if (flags & TRANSFER_SAVE_CCTXT) 729 if (flags & TRANSFER_SAVE_CCTXT)
777 { 730 {
778 if (!prev->stack) 731 if (!prev->stack)
779 allocate_stack (prev, 0); 732 allocate_stack (prev, 0);
780 733
734 /* the new coroutine starts with start_env again */
735 PL_top_env = &PL_start_env;
736
781 if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) 737 if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
782 { 738 {
783 PL_top_env = &next->start_env;
784
785 setup_coro (next); 739 setup_coro (next);
786 next->cursp = stacklevel; 740 next->cursp = stacklevel;
787 741
788 prev->stack->refcnt++; 742 prev->stack->refcnt++;
789 prev->stack->usecnt++; 743 prev->stack->usecnt++;
… …
965BOOT: 919BOOT:
966{ /* {} necessary for stoopid perl-5.6.x */ 920{ /* {} necessary for stoopid perl-5.6.x */
967#ifdef USE_ITHREADS 921#ifdef USE_ITHREADS
968 MUTEX_INIT (&coro_mutex); 922 MUTEX_INIT (&coro_mutex);
969#endif 923#endif
924 BOOT_PAGESIZE;
970 925
971 ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); 926 ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
972 PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); 927 PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
973 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 928 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
974 929
… …
996 Newz (0, coro, 1, struct coro); 951 Newz (0, coro, 1, struct coro);
997 952
998 coro->args = (AV *)SvREFCNT_inc (SvRV (args)); 953 coro->args = (AV *)SvREFCNT_inc (SvRV (args));
999 /*coro->mainstack = 0; *//*actual work is done inside transfer */ 954 /*coro->mainstack = 0; *//*actual work is done inside transfer */
1000 /*coro->stack = 0;*/ 955 /*coro->stack = 0;*/
1001
1002 /* same as JMPENV_BOOTSTRAP */
1003 /* we might be able to recycle start_env, but safe is safe */
1004 /*Zero(&coro->start_env, 1, JMPENV);*/
1005 coro->start_env.je_ret = -1;
1006 coro->start_env.je_mustcatch = TRUE;
1007 956
1008 RETVAL = coro; 957 RETVAL = coro;
1009 OUTPUT: 958 OUTPUT:
1010 RETVAL 959 RETVAL
1011 960
… …
1055 CODE: 1004 CODE:
1056 _exit (code); 1005 _exit (code);
1057 1006
1058MODULE = Coro::State PACKAGE = Coro::Cont 1007MODULE = Coro::State PACKAGE = Coro::Cont
1059 1008
1060# this is slightly dirty (should expose a c-level api)
1061
1062void 1009void
1063yield(...) 1010yield(...)
1064 PROTOTYPE: @ 1011 PROTOTYPE: @
1065 CODE: 1012 CODE:
1066 SV *yieldstack; 1013 SV *yieldstack;
… …
1087 1034
1088 transfer (aTHX_ prev, next, 0); 1035 transfer (aTHX_ prev, next, 0);
1089 1036
1090MODULE = Coro::State PACKAGE = Coro 1037MODULE = Coro::State PACKAGE = Coro
1091 1038
1092# this is slightly dirty (should expose a c-level api)
1093
1094BOOT: 1039BOOT:
1095{ 1040{
1096 int i; 1041 int i;
1097 HV *stash = gv_stashpv ("Coro", TRUE); 1042 HV *stash = gv_stashpv ("Coro", TRUE);
1098 1043
… …
1117 coroapi.ready = api_ready; 1062 coroapi.ready = api_ready;
1118 coroapi.nready = &coro_nready; 1063 coroapi.nready = &coro_nready;
1119 coroapi.current = coro_current; 1064 coroapi.current = coro_current;
1120 1065
1121 GCoroAPI = &coroapi; 1066 GCoroAPI = &coroapi;
1122 sv_setiv(sv, (IV)&coroapi); 1067 sv_setiv (sv, (IV)&coroapi);
1123 SvREADONLY_on(sv); 1068 SvREADONLY_on (sv);
1124 } 1069 }
1125} 1070}
1126 1071
1127#if !PERL_MICRO 1072#if !PERL_MICRO
1128 1073

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