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Comparing Coro/Coro/State.xs (file contents):
Revision 1.262 by root, Mon Nov 10 20:38:19 2008 UTC vs.
Revision 1.288 by root, Mon Nov 17 07:14:50 2008 UTC

… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
57static int cctx_max_idle = 4; 54static int cctx_max_idle = 4;
58 55
… …
98# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
99#endif 96#endif
100#ifndef newSV 97#ifndef newSV
101# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
102#endif 99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103 103
104/* 5.8.7 */ 104/* 5.8.7 */
105#ifndef SvRV_set 105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif 107#endif
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 120#endif
121 121
122/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 123 * portable way as possible. */
124#define dSTACKLEVEL volatile char stacklevel 124#if __GNUC__ >= 4
125#define STACKLEVEL ((void *)&stacklevel) 125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
126#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
128#endif
126 129
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 130#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 131
129#if __GNUC__ >= 3 132#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 133# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 134# define expect(expr,value) __builtin_expect ((expr),(value))
135# define INLINE static inline
133#else 136#else
134# define attribute(x) 137# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 138# define expect(expr,value) (expr)
139# define INLINE static
137#endif 140#endif
138 141
139#define expect_false(expr) expect ((expr) != 0, 0) 142#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 143#define expect_true(expr) expect ((expr) != 0, 1)
141 144
142#define NOINLINE attribute ((noinline)) 145#define NOINLINE attribute ((noinline))
143 146
144#include "CoroAPI.h" 147#include "CoroAPI.h"
145 148
146#ifdef USE_ITHREADS 149#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 150# if CORO_PTHREAD
152static void *coro_thx; 151static void *coro_thx;
153# endif 152# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 153#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 154
177static double (*nvtime)(); /* so why doesn't it take void? */ 155static double (*nvtime)(); /* so why doesn't it take void? */
178 156
179static U32 cctx_gen; 157static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 158static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 159static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 160static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 161static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 162static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 163static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187
188struct transfer_args
189{
190 struct coro *prev, *next;
191};
192 164
193static GV *irsgv; /* $/ */ 165static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 166static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 167static SV *rv_diehook;
196static SV *rv_warnhook; 168static SV *rv_warnhook;
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 187 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 189};
218 190
219/* this is a structure representing a c-level coroutine */ 191/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 192typedef struct coro_cctx
193{
221 struct coro_cctx *next; 194 struct coro_cctx *next;
222 195
223 /* the stack */ 196 /* the stack */
224 void *sptr; 197 void *sptr;
225 size_t ssize; 198 size_t ssize;
… …
243 CF_NEW = 0x0004, /* has never been switched to */ 216 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 217 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245}; 218};
246 219
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 220/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 221typedef struct
222{
249 SV *defsv; 223 SV *defsv;
250 AV *defav; 224 AV *defav;
251 SV *errsv; 225 SV *errsv;
252 SV *irsgv; 226 SV *irsgv;
253#define VAR(name,type) type name; 227#define VAR(name,type) type name;
… …
257 231
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 232#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 233
260/* this is a structure representing a perl-level coroutine */ 234/* this is a structure representing a perl-level coroutine */
261struct coro { 235struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 236 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 237 coro_cctx *cctx;
264 238
265 /* process data */ 239 /* state data */
240 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 241 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 242 perl_slots *slot; /* basically the saved sp */
268 243
269 AV *args; /* data associated with this coroutine (initial args) */ 244 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 245 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 246 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 247 HV *hv; /* the perl hash associated with this coro, if any */
248 void (*on_destroy)(pTHX_ struct coro *coro);
273 249
274 /* statistics */ 250 /* statistics */
275 int usecount; /* number of transfers to this coro */ 251 int usecount; /* number of transfers to this coro */
276 252
277 /* coro process data */ 253 /* coro process data */
… …
285 struct coro *next, *prev; 261 struct coro *next, *prev;
286}; 262};
287 263
288typedef struct coro *Coro__State; 264typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 265typedef struct coro *Coro__State_or_hashref;
266
267/* the following variables are effectively part of the perl context */
268/* and get copied between struct coro and these variables */
269/* the mainr easonw e don't support windows process emulation */
270static struct CoroSLF slf_frame; /* the current slf frame */
271static SV *coro_throw;
290 272
291/** Coro ********************************************************************/ 273/** Coro ********************************************************************/
292 274
293#define PRIO_MAX 3 275#define PRIO_MAX 3
294#define PRIO_HIGH 1 276#define PRIO_HIGH 1
… …
299 281
300/* for Coro.pm */ 282/* for Coro.pm */
301static SV *coro_current; 283static SV *coro_current;
302static SV *coro_readyhook; 284static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 285static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
304static int coro_nready;
305static struct coro *coro_first; 286static struct coro *coro_first;
287#define coro_nready coroapi.nready
306 288
307/** lowlevel stuff **********************************************************/ 289/** lowlevel stuff **********************************************************/
308 290
309static SV * 291static SV *
310coro_get_sv (pTHX_ const char *name, int create) 292coro_get_sv (pTHX_ const char *name, int create)
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 378
397 return 0; 379 return 0;
398} 380}
399 381
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 382#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 383#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 384
403static MGVTBL coro_cv_vtbl = { 385static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 386 0, 0, 0, 0,
405 coro_cv_free 387 coro_cv_free
406}; 388};
407 389
390#define CORO_MAGIC_NN(sv, type) \
391 (expect_true (SvMAGIC (sv)->mg_type == type) \
392 ? SvMAGIC (sv) \
393 : mg_find (sv, type))
394
408#define CORO_MAGIC(sv, type) \ 395#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 396 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 397 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 398 : 0)
414 399
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 401#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 402
418static struct coro * 403INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 404SvSTATE_ (pTHX_ SV *coro)
420{ 405{
421 HV *stash; 406 HV *stash;
422 MAGIC *mg; 407 MAGIC *mg;
423 408
… …
438 mg = CORO_MAGIC_state (coro); 423 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 424 return (struct coro *)mg->mg_ptr;
440} 425}
441 426
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* faster than SvSTATE, but expects a coroutine hv */
430#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 432
444/* the next two functions merely cache the padlists */ 433/* the next two functions merely cache the padlists */
445static void 434static void
446get_padlist (pTHX_ CV *cv) 435get_padlist (pTHX_ CV *cv)
447{ 436{
… …
514 CvPADLIST (cv) = (AV *)POPs; 503 CvPADLIST (cv) = (AV *)POPs;
515 } 504 }
516 505
517 PUTBACK; 506 PUTBACK;
518 } 507 }
508
509 slf_frame = c->slf_frame;
510 coro_throw = c->throw;
519} 511}
520 512
521static void 513static void
522save_perl (pTHX_ Coro__State c) 514save_perl (pTHX_ Coro__State c)
523{ 515{
516 c->throw = coro_throw;
517 c->slf_frame = slf_frame;
518
524 { 519 {
525 dSP; 520 dSP;
526 I32 cxix = cxstack_ix; 521 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 522 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 523 PERL_SI *top_si = PL_curstackinfo;
… …
595 #undef VAR 590 #undef VAR
596 } 591 }
597} 592}
598 593
599/* 594/*
600 * allocate various perl stacks. This is an exact copy 595 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 596 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 597 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 598 * not usually need a lot of stackspace.
604 */ 599 */
605#if CORO_PREFER_PERL_FUNCTIONS 600#if CORO_PREFER_PERL_FUNCTIONS
… …
807 802
808 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 803 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
809} 804}
810 805
811static void 806static void
807prepare_nop (pTHX_ struct coro_transfer_args *ta)
808{
809 /* kind of mega-hacky, but works */
810 ta->next = ta->prev = (struct coro *)ta;
811}
812
813static int
814slf_check_nop (pTHX_ struct CoroSLF *frame)
815{
816 return 0;
817}
818
819static void NOINLINE /* noinline to keep it out of the transfer fast path */
812coro_setup (pTHX_ struct coro *coro) 820coro_setup (pTHX_ struct coro *coro)
813{ 821{
814 /* 822 /*
815 * emulate part of the perl startup here. 823 * emulate part of the perl startup here.
816 */ 824 */
… …
855 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 863 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
856 SPAGAIN; 864 SPAGAIN;
857 } 865 }
858 866
859 /* this newly created coroutine might be run on an existing cctx which most 867 /* this newly created coroutine might be run on an existing cctx which most
860 * likely was suspended in set_stacklevel, called from entersub. 868 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
861 * set_stacklevel doesn't do anything on return, but entersub does LEAVE,
862 * so we ENTER here for symmetry.
863 */ 869 */
864 ENTER; 870 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
871 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
872
873 coro_throw = coro->throw;
865} 874}
866 875
867static void 876static void
868coro_destruct (pTHX_ struct coro *coro) 877coro_destruct (pTHX_ struct coro *coro)
869{ 878{
… …
893 902
894 SvREFCNT_dec (PL_diehook); 903 SvREFCNT_dec (PL_diehook);
895 SvREFCNT_dec (PL_warnhook); 904 SvREFCNT_dec (PL_warnhook);
896 905
897 SvREFCNT_dec (coro->saved_deffh); 906 SvREFCNT_dec (coro->saved_deffh);
898 SvREFCNT_dec (coro->throw); 907 SvREFCNT_dec (coro_throw);
899 908
900 coro_destruct_stacks (aTHX); 909 coro_destruct_stacks (aTHX);
901} 910}
902 911
903static void 912INLINE void
904free_coro_mortal (pTHX) 913free_coro_mortal (pTHX)
905{ 914{
906 if (expect_true (coro_mortal)) 915 if (expect_true (coro_mortal))
907 { 916 {
908 SvREFCNT_dec (coro_mortal); 917 SvREFCNT_dec (coro_mortal);
… …
913static int 922static int
914runops_trace (pTHX) 923runops_trace (pTHX)
915{ 924{
916 COP *oldcop = 0; 925 COP *oldcop = 0;
917 int oldcxix = -2; 926 int oldcxix = -2;
918 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 927 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
919 coro_cctx *cctx = coro->cctx; 928 coro_cctx *cctx = coro->cctx;
920 929
921 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 930 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
922 { 931 {
923 PERL_ASYNC_CHECK (); 932 PERL_ASYNC_CHECK ();
… …
1033 TAINT_NOT; 1042 TAINT_NOT;
1034 return 0; 1043 return 0;
1035} 1044}
1036 1045
1037static void 1046static void
1038prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1047prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1039{ 1048{
1040 ta->prev = (struct coro *)cctx; 1049 ta->prev = (struct coro *)cctx;
1041 ta->next = 0; 1050 ta->next = 0;
1042} 1051}
1043 1052
… …
1069 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1078 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1070 SPAGAIN; 1079 SPAGAIN;
1071} 1080}
1072 1081
1073/* the tail of transfer: execute stuff we can only do after a transfer */ 1082/* the tail of transfer: execute stuff we can only do after a transfer */
1074static void 1083INLINE void
1075transfer_tail (pTHX) 1084transfer_tail (pTHX)
1076{ 1085{
1077 struct coro *next = (struct coro *)transfer_next;
1078 transfer_next = 0; //D for temporary assertion in transfer
1079 assert (("FATAL ERROR: internal error 1067 in Coro module, please report", next));//D
1080
1081 free_coro_mortal (aTHX); 1086 free_coro_mortal (aTHX);
1082 UNLOCK;
1083
1084 if (expect_false (next->throw))
1085 {
1086 SV *exception = sv_2mortal (next->throw);
1087
1088 next->throw = 0;
1089 sv_setsv (ERRSV, exception);
1090 croak (0);
1091 }
1092} 1087}
1093 1088
1094/* 1089/*
1095 * this is a _very_ stripped down perl interpreter ;) 1090 * this is a _very_ stripped down perl interpreter ;)
1096 */ 1091 */
… …
1103# endif 1098# endif
1104#endif 1099#endif
1105 { 1100 {
1106 dTHX; 1101 dTHX;
1107 1102
1108 /* entersub called ENTER, but we never 'returned', undo that here */ 1103 /* normally we would need to skip the entersub here */
1109 LEAVE; 1104 /* not doing so will re-execute it, which is exactly what we want */
1110
1111 /* we now skip the entersub that did lead to transfer() */
1112 PL_op = PL_op->op_next; 1105 /* PL_nop = PL_nop->op_next */
1113 1106
1114 /* inject a fake subroutine call to cctx_init */ 1107 /* inject a fake subroutine call to cctx_init */
1115 cctx_prepare (aTHX_ (coro_cctx *)arg); 1108 cctx_prepare (aTHX_ (coro_cctx *)arg);
1116 1109
1117 /* cctx_run is the alternative tail of transfer() */ 1110 /* cctx_run is the alternative tail of transfer() */
… …
1173 /* mmap supposedly does allocate-on-write for us */ 1166 /* mmap supposedly does allocate-on-write for us */
1174 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1167 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1175 1168
1176 if (cctx->sptr != (void *)-1) 1169 if (cctx->sptr != (void *)-1)
1177 { 1170 {
1178# if CORO_STACKGUARD 1171 #if CORO_STACKGUARD
1179 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1172 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1180# endif 1173 #endif
1181 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1174 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1182 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1175 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1183 cctx->flags |= CC_MAPPED; 1176 cctx->flags |= CC_MAPPED;
1184 } 1177 }
1185 else 1178 else
1186#endif 1179#endif
1187 { 1180 {
1188 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1181 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1189 New (0, cctx->sptr, cctx_stacksize, long); 1182 New (0, cctx->sptr, cctx_stacksize, long);
1190 1183
1191 if (!cctx->sptr) 1184 if (!cctx->sptr)
1192 { 1185 {
1193 perror ("FATAL: unable to allocate stack for coroutine"); 1186 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1194 _exit (EXIT_FAILURE); 1187 _exit (EXIT_FAILURE);
1195 } 1188 }
1196 1189
1197 stack_start = cctx->sptr; 1190 stack_start = cctx->sptr;
1198 stack_size = cctx->ssize; 1191 stack_size = cctx->ssize;
1199 } 1192 }
1200 1193
1201 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1194 #if CORO_USE_VALGRIND
1195 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1196 #endif
1197
1202 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1198 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1203 1199
1204 return cctx; 1200 return cctx;
1205} 1201}
1206 1202
… …
1214 coro_destroy (&cctx->cctx); 1210 coro_destroy (&cctx->cctx);
1215 1211
1216 /* coro_transfer creates new, empty cctx's */ 1212 /* coro_transfer creates new, empty cctx's */
1217 if (cctx->sptr) 1213 if (cctx->sptr)
1218 { 1214 {
1219#if CORO_USE_VALGRIND 1215 #if CORO_USE_VALGRIND
1220 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1216 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1221#endif 1217 #endif
1222 1218
1223#if HAVE_MMAP 1219#if HAVE_MMAP
1224 if (cctx->flags & CC_MAPPED) 1220 if (cctx->flags & CC_MAPPED)
1225 munmap (cctx->sptr, cctx->ssize); 1221 munmap (cctx->sptr, cctx->ssize);
1226 else 1222 else
… …
1253} 1249}
1254 1250
1255static void 1251static void
1256cctx_put (coro_cctx *cctx) 1252cctx_put (coro_cctx *cctx)
1257{ 1253{
1258 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1254 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1259 1255
1260 /* free another cctx if overlimit */ 1256 /* free another cctx if overlimit */
1261 if (expect_false (cctx_idle >= cctx_max_idle)) 1257 if (expect_false (cctx_idle >= cctx_max_idle))
1262 { 1258 {
1263 coro_cctx *first = cctx_first; 1259 coro_cctx *first = cctx_first;
… …
1275/** coroutine switching *****************************************************/ 1271/** coroutine switching *****************************************************/
1276 1272
1277static void 1273static void
1278transfer_check (pTHX_ struct coro *prev, struct coro *next) 1274transfer_check (pTHX_ struct coro *prev, struct coro *next)
1279{ 1275{
1276 /* TODO: throwing up here is considered harmful */
1277
1280 if (expect_true (prev != next)) 1278 if (expect_true (prev != next))
1281 { 1279 {
1282 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1280 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1283 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1281 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1284 1282
1285 if (expect_false (next->flags & CF_RUNNING)) 1283 if (expect_false (next->flags & CF_RUNNING))
1286 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1284 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1287 1285
1288 if (expect_false (next->flags & CF_DESTROYED)) 1286 if (expect_false (next->flags & CF_DESTROYED))
1289 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1287 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1290 1288
1291#if !PERL_VERSION_ATLEAST (5,10,0) 1289#if !PERL_VERSION_ATLEAST (5,10,0)
1292 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1290 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1293 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1291 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1294#endif 1292#endif
1295 } 1293 }
1296} 1294}
1297 1295
1298/* always use the TRANSFER macro */ 1296/* always use the TRANSFER macro */
1299static void NOINLINE 1297static void NOINLINE /* noinline so we have a fixed stackframe */
1300transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1298transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1301{ 1299{
1302 dSTACKLEVEL; 1300 dSTACKLEVEL;
1303 1301
1304 /* sometimes transfer is only called to set idle_sp */ 1302 /* sometimes transfer is only called to set idle_sp */
1305 if (expect_false (!next)) 1303 if (expect_false (!next))
1306 { 1304 {
1307 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1305 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1308 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1306 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1309 } 1307 }
1310 else if (expect_true (prev != next)) 1308 else if (expect_true (prev != next))
1311 { 1309 {
1312 coro_cctx *prev__cctx; 1310 coro_cctx *prev__cctx;
… …
1319 prev->flags |= CF_RUNNING; 1317 prev->flags |= CF_RUNNING;
1320 } 1318 }
1321 1319
1322 prev->flags &= ~CF_RUNNING; 1320 prev->flags &= ~CF_RUNNING;
1323 next->flags |= CF_RUNNING; 1321 next->flags |= CF_RUNNING;
1324
1325 LOCK;
1326 1322
1327 /* first get rid of the old state */ 1323 /* first get rid of the old state */
1328 save_perl (aTHX_ prev); 1324 save_perl (aTHX_ prev);
1329 1325
1330 if (expect_false (next->flags & CF_NEW)) 1326 if (expect_false (next->flags & CF_NEW))
… …
1339 1335
1340 prev__cctx = prev->cctx; 1336 prev__cctx = prev->cctx;
1341 1337
1342 /* possibly untie and reuse the cctx */ 1338 /* possibly untie and reuse the cctx */
1343 if (expect_true ( 1339 if (expect_true (
1344 prev__cctx->idle_sp == STACKLEVEL 1340 prev__cctx->idle_sp == (void *)stacklevel
1345 && !(prev__cctx->flags & CC_TRACE) 1341 && !(prev__cctx->flags & CC_TRACE)
1346 && !force_cctx 1342 && !force_cctx
1347 )) 1343 ))
1348 { 1344 {
1349 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1345 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1350 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1346 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1351 1347
1352 prev->cctx = 0; 1348 prev->cctx = 0;
1353 1349
1354 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1350 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1355 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1351 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1362 1358
1363 ++next->usecount; 1359 ++next->usecount;
1364 1360
1365 if (expect_true (!next->cctx)) 1361 if (expect_true (!next->cctx))
1366 next->cctx = cctx_get (aTHX); 1362 next->cctx = cctx_get (aTHX);
1367
1368 assert (("FATAL ERROR: internal error 1352 in Coro, please report", !transfer_next));//D
1369 transfer_next = next;
1370 1363
1371 if (expect_false (prev__cctx != next->cctx)) 1364 if (expect_false (prev__cctx != next->cctx))
1372 { 1365 {
1373 prev__cctx->top_env = PL_top_env; 1366 prev__cctx->top_env = PL_top_env;
1374 PL_top_env = next->cctx->top_env; 1367 PL_top_env = next->cctx->top_env;
… …
1388coro_state_destroy (pTHX_ struct coro *coro) 1381coro_state_destroy (pTHX_ struct coro *coro)
1389{ 1382{
1390 if (coro->flags & CF_DESTROYED) 1383 if (coro->flags & CF_DESTROYED)
1391 return 0; 1384 return 0;
1392 1385
1386 if (coro->on_destroy)
1387 coro->on_destroy (aTHX_ coro);
1388
1393 coro->flags |= CF_DESTROYED; 1389 coro->flags |= CF_DESTROYED;
1394 1390
1395 if (coro->flags & CF_READY) 1391 if (coro->flags & CF_READY)
1396 { 1392 {
1397 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1393 /* reduce nready, as destroying a ready coro effectively unreadies it */
1398 /* alternative: look through all ready queues and remove the coro */ 1394 /* alternative: look through all ready queues and remove the coro */
1399 LOCK;
1400 --coro_nready; 1395 --coro_nready;
1401 UNLOCK;
1402 } 1396 }
1403 else 1397 else
1404 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1398 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1405 1399
1406 if (coro->mainstack && coro->mainstack != main_mainstack) 1400 if (coro->mainstack && coro->mainstack != main_mainstack)
1407 { 1401 {
1408 struct coro temp; 1402 struct coro temp;
1409 1403
1410 if (coro->flags & CF_RUNNING) 1404 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1411 croak ("FATAL: tried to destroy currently running coroutine");
1412 1405
1413 save_perl (aTHX_ &temp); 1406 save_perl (aTHX_ &temp);
1414 load_perl (aTHX_ coro); 1407 load_perl (aTHX_ coro);
1415 1408
1416 coro_destruct (aTHX_ coro); 1409 coro_destruct (aTHX_ coro);
… …
1467# define MGf_DUP 0 1460# define MGf_DUP 0
1468#endif 1461#endif
1469}; 1462};
1470 1463
1471static void 1464static void
1472prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1465prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1473{ 1466{
1474 ta->prev = SvSTATE (prev_sv); 1467 ta->prev = SvSTATE (prev_sv);
1475 ta->next = SvSTATE (next_sv); 1468 ta->next = SvSTATE (next_sv);
1476 TRANSFER_CHECK (*ta); 1469 TRANSFER_CHECK (*ta);
1477} 1470}
1478 1471
1479static void 1472static void
1480api_transfer (SV *prev_sv, SV *next_sv) 1473api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1481{ 1474{
1482 dTHX;
1483 struct transfer_args ta; 1475 struct coro_transfer_args ta;
1484 1476
1485 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1477 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1486 TRANSFER (ta, 1); 1478 TRANSFER (ta, 1);
1487} 1479}
1488 1480
1489/** Coro ********************************************************************/ 1481/** Coro ********************************************************************/
1490 1482
1491static void 1483INLINE void
1492coro_enq (pTHX_ SV *coro_sv) 1484coro_enq (pTHX_ struct coro *coro)
1493{ 1485{
1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1486 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1495} 1487}
1496 1488
1497static SV * 1489INLINE SV *
1498coro_deq (pTHX) 1490coro_deq (pTHX)
1499{ 1491{
1500 int prio; 1492 int prio;
1501 1493
1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1494 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1505 1497
1506 return 0; 1498 return 0;
1507} 1499}
1508 1500
1509static int 1501static int
1510api_ready (SV *coro_sv) 1502api_ready (pTHX_ SV *coro_sv)
1511{ 1503{
1512 dTHX;
1513 struct coro *coro; 1504 struct coro *coro;
1514 SV *sv_hook; 1505 SV *sv_hook;
1515 void (*xs_hook)(void); 1506 void (*xs_hook)(void);
1516 1507
1517 if (SvROK (coro_sv)) 1508 if (SvROK (coro_sv))
… …
1522 if (coro->flags & CF_READY) 1513 if (coro->flags & CF_READY)
1523 return 0; 1514 return 0;
1524 1515
1525 coro->flags |= CF_READY; 1516 coro->flags |= CF_READY;
1526 1517
1527 LOCK;
1528
1529 sv_hook = coro_nready ? 0 : coro_readyhook; 1518 sv_hook = coro_nready ? 0 : coro_readyhook;
1530 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1519 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1531 1520
1532 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1521 coro_enq (aTHX_ coro);
1533 ++coro_nready; 1522 ++coro_nready;
1534 1523
1535 UNLOCK;
1536
1537 if (sv_hook) 1524 if (sv_hook)
1538 { 1525 {
1539 dSP; 1526 dSP;
1540 1527
1541 ENTER; 1528 ENTER;
… …
1555 1542
1556 return 1; 1543 return 1;
1557} 1544}
1558 1545
1559static int 1546static int
1560api_is_ready (SV *coro_sv) 1547api_is_ready (pTHX_ SV *coro_sv)
1561{ 1548{
1562 dTHX;
1563 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1549 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1564} 1550}
1565 1551
1566static void 1552INLINE void
1567prepare_schedule (pTHX_ struct transfer_args *ta) 1553prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1568{ 1554{
1569 SV *prev_sv, *next_sv; 1555 SV *prev_sv, *next_sv;
1570 1556
1571 for (;;) 1557 for (;;)
1572 { 1558 {
1573 LOCK;
1574 next_sv = coro_deq (aTHX); 1559 next_sv = coro_deq (aTHX);
1575 1560
1576 /* nothing to schedule: call the idle handler */ 1561 /* nothing to schedule: call the idle handler */
1577 if (expect_false (!next_sv)) 1562 if (expect_false (!next_sv))
1578 { 1563 {
1579 dSP; 1564 dSP;
1580 UNLOCK;
1581 1565
1582 ENTER; 1566 ENTER;
1583 SAVETMPS; 1567 SAVETMPS;
1584 1568
1585 PUSHMARK (SP); 1569 PUSHMARK (SP);
… …
1590 FREETMPS; 1574 FREETMPS;
1591 LEAVE; 1575 LEAVE;
1592 continue; 1576 continue;
1593 } 1577 }
1594 1578
1595 ta->next = SvSTATE (next_sv); 1579 ta->next = SvSTATE_hv (next_sv);
1596 1580
1597 /* cannot transfer to destroyed coros, skip and look for next */ 1581 /* cannot transfer to destroyed coros, skip and look for next */
1598 if (expect_false (ta->next->flags & CF_DESTROYED)) 1582 if (expect_false (ta->next->flags & CF_DESTROYED))
1599 { 1583 {
1600 UNLOCK;
1601 SvREFCNT_dec (next_sv); 1584 SvREFCNT_dec (next_sv);
1602 /* coro_nready has already been taken care of by destroy */ 1585 /* coro_nready has already been taken care of by destroy */
1603 continue; 1586 continue;
1604 } 1587 }
1605 1588
1606 --coro_nready; 1589 --coro_nready;
1607 UNLOCK;
1608 break; 1590 break;
1609 } 1591 }
1610 1592
1611 /* free this only after the transfer */ 1593 /* free this only after the transfer */
1612 prev_sv = SvRV (coro_current); 1594 prev_sv = SvRV (coro_current);
1613 ta->prev = SvSTATE (prev_sv); 1595 ta->prev = SvSTATE_hv (prev_sv);
1614 TRANSFER_CHECK (*ta); 1596 TRANSFER_CHECK (*ta);
1615 assert (ta->next->flags & CF_READY); 1597 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1616 ta->next->flags &= ~CF_READY; 1598 ta->next->flags &= ~CF_READY;
1617 SvRV_set (coro_current, next_sv); 1599 SvRV_set (coro_current, next_sv);
1618 1600
1619 LOCK;
1620 free_coro_mortal (aTHX); 1601 free_coro_mortal (aTHX);
1621 coro_mortal = prev_sv; 1602 coro_mortal = prev_sv;
1622 UNLOCK;
1623} 1603}
1624 1604
1625static void 1605INLINE void
1626prepare_cede (pTHX_ struct transfer_args *ta) 1606prepare_cede (pTHX_ struct coro_transfer_args *ta)
1627{ 1607{
1628 api_ready (coro_current); 1608 api_ready (aTHX_ coro_current);
1629 prepare_schedule (aTHX_ ta); 1609 prepare_schedule (aTHX_ ta);
1630} 1610}
1631 1611
1612INLINE void
1613prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1614{
1615 SV *prev = SvRV (coro_current);
1616
1617 if (coro_nready)
1618 {
1619 prepare_schedule (aTHX_ ta);
1620 api_ready (aTHX_ prev);
1621 }
1622 else
1623 prepare_nop (aTHX_ ta);
1624}
1625
1626static void
1627api_schedule (pTHX)
1628{
1629 struct coro_transfer_args ta;
1630
1631 prepare_schedule (aTHX_ &ta);
1632 TRANSFER (ta, 1);
1633}
1634
1632static int 1635static int
1633prepare_cede_notself (pTHX_ struct transfer_args *ta) 1636api_cede (pTHX)
1634{ 1637{
1635 if (coro_nready) 1638 struct coro_transfer_args ta;
1636 { 1639
1637 SV *prev = SvRV (coro_current);
1638 prepare_schedule (aTHX_ ta); 1640 prepare_cede (aTHX_ &ta);
1639 api_ready (prev); 1641
1642 if (expect_true (ta.prev != ta.next))
1643 {
1644 TRANSFER (ta, 1);
1640 return 1; 1645 return 1;
1641 } 1646 }
1642 else 1647 else
1643 return 0; 1648 return 0;
1644} 1649}
1645 1650
1646static void
1647api_schedule (void)
1648{
1649 dTHX;
1650 struct transfer_args ta;
1651
1652 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1);
1654}
1655
1656static int 1651static int
1657api_cede (void) 1652api_cede_notself (pTHX)
1658{ 1653{
1659 dTHX; 1654 if (coro_nready)
1655 {
1660 struct transfer_args ta; 1656 struct coro_transfer_args ta;
1661 1657
1662 prepare_cede (aTHX_ &ta); 1658 prepare_cede_notself (aTHX_ &ta);
1663
1664 if (expect_true (ta.prev != ta.next))
1665 {
1666 TRANSFER (ta, 1); 1659 TRANSFER (ta, 1);
1667 return 1; 1660 return 1;
1668 } 1661 }
1669 else 1662 else
1670 return 0; 1663 return 0;
1671} 1664}
1672 1665
1673static int 1666static void
1674api_cede_notself (void)
1675{
1676 dTHX;
1677 struct transfer_args ta;
1678
1679 if (prepare_cede_notself (aTHX_ &ta))
1680 {
1681 TRANSFER (ta, 1);
1682 return 1;
1683 }
1684 else
1685 return 0;
1686}
1687
1688static void
1689api_trace (SV *coro_sv, int flags) 1667api_trace (pTHX_ SV *coro_sv, int flags)
1690{ 1668{
1691 dTHX;
1692 struct coro *coro = SvSTATE (coro_sv); 1669 struct coro *coro = SvSTATE (coro_sv);
1693 1670
1694 if (flags & CC_TRACE) 1671 if (flags & CC_TRACE)
1695 { 1672 {
1696 if (!coro->cctx) 1673 if (!coro->cctx)
1697 coro->cctx = cctx_new_run (); 1674 coro->cctx = cctx_new_run ();
1698 else if (!(coro->cctx->flags & CC_TRACE)) 1675 else if (!(coro->cctx->flags & CC_TRACE))
1699 croak ("cannot enable tracing on coroutine with custom stack"); 1676 croak ("cannot enable tracing on coroutine with custom stack,");
1700 1677
1701 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1678 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1702 } 1679 }
1703 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1680 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1704 { 1681 {
… …
1709 else 1686 else
1710 coro->slot->runops = RUNOPS_DEFAULT; 1687 coro->slot->runops = RUNOPS_DEFAULT;
1711 } 1688 }
1712} 1689}
1713 1690
1714#if 0 1691/*****************************************************************************/
1692/* schedule-like-function opcode (SLF) */
1693
1694static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1695static const CV *slf_cv;
1696static SV **slf_argv;
1697static int slf_argc, slf_arga; /* count, allocated */
1698static I32 slf_ax; /* top of stack, for restore */
1699
1700/* this restores the stack in the case we patched the entersub, to */
1701/* recreate the stack frame as perl will on following calls */
1702/* since entersub cleared the stack */
1703static OP *
1704pp_restore (pTHX)
1705{
1706 int i;
1707 SV **SP = PL_stack_base + slf_ax;
1708
1709 PUSHMARK (SP);
1710
1711 EXTEND (SP, slf_argc + 1);
1712
1713 for (i = 0; i < slf_argc; ++i)
1714 PUSHs (sv_2mortal (slf_argv [i]));
1715
1716 PUSHs ((SV *)CvGV (slf_cv));
1717
1718 RETURNOP (slf_restore.op_first);
1719}
1720
1715static int 1721static void
1716coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1722slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1717{ 1723{
1718 AV *padlist; 1724 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1719 AV *av = (AV *)mg->mg_obj;
1720
1721 abort ();
1722
1723 return 0;
1724} 1725}
1725 1726
1726static MGVTBL coro_gensub_vtbl = { 1727static void
1727 0, 0, 0, 0, 1728slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1728 coro_gensub_free 1729{
1729}; 1730 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1730#endif 1731
1732 frame->prepare = slf_prepare_set_stacklevel;
1733 frame->check = slf_check_nop;
1734 frame->data = (void *)SvIV (arg [0]);
1735}
1736
1737static void
1738slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1739{
1740 SV **arg = (SV **)slf_frame.data;
1741
1742 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1743}
1744
1745static void
1746slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1747{
1748 if (items != 2)
1749 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1750
1751 frame->prepare = slf_prepare_transfer;
1752 frame->check = slf_check_nop;
1753 frame->data = (void *)arg; /* let's hope it will stay valid */
1754}
1755
1756static void
1757slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1758{
1759 frame->prepare = prepare_schedule;
1760 frame->check = slf_check_nop;
1761}
1762
1763static void
1764slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1765{
1766 frame->prepare = prepare_cede;
1767 frame->check = slf_check_nop;
1768}
1769
1770static void
1771slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1772{
1773 frame->prepare = prepare_cede_notself;
1774 frame->check = slf_check_nop;
1775}
1776
1777/* we hijack an hopefully unused CV flag for our purposes */
1778#define CVf_SLF 0x4000
1779
1780/*
1781 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same
1783 * stack offset
1784 * SLF stands for "schedule-like-function".
1785 */
1786static OP *
1787pp_slf (pTHX)
1788{
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790
1791 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare))
1795 {
1796 /* first iteration */
1797 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */
1800 SV *gv = *sp;
1801
1802 /* do a quick consistency check on the "function" object, and if it isn't */
1803 /* for us, divert to the real entersub */
1804 if (SvTYPE (gv) != SVt_PVGV
1805 || !GvCV (gv)
1806 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1807 return PL_ppaddr[OP_ENTERSUB](aTHX);
1808
1809 if (!(PL_op->op_flags & OPf_STACKED))
1810 {
1811 /* ampersand-form of call, use @_ instead of stack */
1812 AV *av = GvAV (PL_defgv);
1813 arg = AvARRAY (av);
1814 items = AvFILLp (av) + 1;
1815 }
1816
1817 /* now call the init function, which needs to set up slf_frame */
1818 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1819 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1820
1821 /* pop args */
1822 SP = PL_stack_base + POPMARK;
1823
1824 PUTBACK;
1825 }
1826
1827 /* now that we have a slf_frame, interpret it! */
1828 /* we use a callback system not to make the code needlessly */
1829 /* complicated, but so we can run multiple perl coros from one cctx */
1830
1831 do
1832 {
1833 struct coro_transfer_args ta;
1834
1835 slf_frame.prepare (aTHX_ &ta);
1836 TRANSFER (ta, 0);
1837
1838 checkmark = PL_stack_sp - PL_stack_base;
1839 }
1840 while (slf_frame.check (aTHX_ &slf_frame));
1841
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843
1844 /* return value handling - mostly like entersub */
1845 {
1846 dSP;
1847 SV **bot = PL_stack_base + checkmark;
1848 int gimme = GIMME_V;
1849
1850 /* make sure we put something on the stack in scalar context */
1851 if (gimme == G_SCALAR)
1852 {
1853 if (sp == bot)
1854 XPUSHs (&PL_sv_undef);
1855
1856 SP = bot + 1;
1857 }
1858
1859 PUTBACK;
1860 }
1861
1862 /* exception handling */
1863 if (expect_false (coro_throw))
1864 {
1865 SV *exception = sv_2mortal (coro_throw);
1866
1867 coro_throw = 0;
1868 sv_setsv (ERRSV, exception);
1869 croak (0);
1870 }
1871
1872 return NORMAL;
1873}
1874
1875static void
1876api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1877{
1878 int i;
1879 SV **arg = PL_stack_base + ax;
1880 int items = PL_stack_sp - arg + 1;
1881
1882 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1883
1884 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1885 && PL_op->op_ppaddr != pp_slf)
1886 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1887
1888 CvFLAGS (cv) |= CVf_SLF;
1889 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1890 slf_cv = cv;
1891
1892 /* we patch the op, and then re-run the whole call */
1893 /* we have to put the same argument on the stack for this to work */
1894 /* and this will be done by pp_restore */
1895 slf_restore.op_next = (OP *)&slf_restore;
1896 slf_restore.op_type = OP_CUSTOM;
1897 slf_restore.op_ppaddr = pp_restore;
1898 slf_restore.op_first = PL_op;
1899
1900 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1901
1902 if (PL_op->op_flags & OPf_STACKED)
1903 {
1904 if (items > slf_arga)
1905 {
1906 slf_arga = items;
1907 free (slf_argv);
1908 slf_argv = malloc (slf_arga * sizeof (SV *));
1909 }
1910
1911 slf_argc = items;
1912
1913 for (i = 0; i < items; ++i)
1914 slf_argv [i] = SvREFCNT_inc (arg [i]);
1915 }
1916 else
1917 slf_argc = 0;
1918
1919 PL_op->op_ppaddr = pp_slf;
1920 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1921
1922 PL_op = (OP *)&slf_restore;
1923}
1731 1924
1732/*****************************************************************************/ 1925/*****************************************************************************/
1733/* PerlIO::cede */ 1926/* PerlIO::cede */
1734 1927
1735typedef struct 1928typedef struct
… …
1763 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 1956 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1764 double now = nvtime (); 1957 double now = nvtime ();
1765 1958
1766 if (now >= self->next) 1959 if (now >= self->next)
1767 { 1960 {
1768 api_cede (); 1961 api_cede (aTHX);
1769 self->next = now + self->every; 1962 self->next = now + self->every;
1770 } 1963 }
1771 1964
1772 return PerlIOBuf_flush (aTHX_ f); 1965 return PerlIOBuf_flush (aTHX_ f);
1773} 1966}
… …
1802 PerlIOBuf_get_ptr, 1995 PerlIOBuf_get_ptr,
1803 PerlIOBuf_get_cnt, 1996 PerlIOBuf_get_cnt,
1804 PerlIOBuf_set_ptrcnt, 1997 PerlIOBuf_set_ptrcnt,
1805}; 1998};
1806 1999
2000/*****************************************************************************/
2001/* Coro::Semaphore */
2002
2003static void
2004coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2005{
2006 SV *count_sv = AvARRAY (av)[0];
2007 IV count = SvIVX (count_sv);
2008
2009 count += adjust;
2010 SvIVX (count_sv) = count;
2011
2012 /* now wake up as many waiters as are expected to lock */
2013 while (count > 0 && AvFILLp (av) > 0)
2014 {
2015 SV *cb;
2016
2017 /* swap first two elements so we can shift a waiter */
2018 AvARRAY (av)[0] = AvARRAY (av)[1];
2019 AvARRAY (av)[1] = count_sv;
2020 cb = av_shift (av);
2021
2022 if (SvOBJECT (cb))
2023 api_ready (aTHX_ cb);
2024 else
2025 croak ("callbacks not yet supported");
2026
2027 SvREFCNT_dec (cb);
2028
2029 --count;
2030 }
2031}
2032
2033static void
2034coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2035{
2036 /* call $sem->adjust (0) to possibly wake up some other waiters */
2037 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2038}
2039
2040static int
2041slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2042{
2043 AV *av = (AV *)frame->data;
2044 SV *count_sv = AvARRAY (av)[0];
2045
2046 if (SvIVX (count_sv) > 0)
2047 {
2048 SvSTATE_current->on_destroy = 0;
2049 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2050 return 0;
2051 }
2052 else
2053 {
2054 int i;
2055 /* if we were woken up but can't down, we look through the whole */
2056 /* waiters list and only add us if we aren't in there already */
2057 /* this avoids some degenerate memory usage cases */
2058
2059 for (i = 1; i <= AvFILLp (av); ++i)
2060 if (AvARRAY (av)[i] == SvRV (coro_current))
2061 return 1;
2062
2063 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2064 return 1;
2065 }
2066}
2067
2068static void
2069slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2070{
2071 AV *av = (AV *)SvRV (arg [0]);
2072
2073 if (SvIVX (AvARRAY (av)[0]) > 0)
2074 {
2075 frame->data = (void *)av;
2076 frame->prepare = prepare_nop;
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 }
2079 else
2080 {
2081 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2082
2083 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2084 frame->prepare = prepare_schedule;
2085
2086 /* to avoid race conditions when a woken-up coro gets terminated */
2087 /* we arrange for a temporary on_destroy that calls adjust (0) */
2088 assert (!SvSTATE_current->on_destroy);//D
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2090 }
2091
2092 frame->check = slf_check_semaphore_down;
2093
2094}
2095
2096/*****************************************************************************/
2097/* gensub: simple closure generation utility */
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{
2107 CV *cv = (CV *)newSV (0);
2108
2109 sv_upgrade ((SV *)cv, SVt_PVCV);
2110
2111 CvANON_on (cv);
2112 CvISXSUB_on (cv);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115
2116 return newRV_noinc ((SV *)cv);
2117}
2118
2119/*****************************************************************************/
2120/* Coro::AIO */
2121
2122#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2123
2124/* helper storage struct */
2125struct io_state
2126{
2127 int errorno;
2128 I32 laststype; /* U16 in 5.10.0 */
2129 int laststatval;
2130 Stat_t statcache;
2131};
2132
2133static void
2134coro_aio_callback (pTHX_ CV *cv)
2135{
2136 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG;
2138 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state));
2140
2141 av_extend (state, items);
2142
2143 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv);
2146
2147 {
2148 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2149
2150 data->errorno = errno;
2151 data->laststype = PL_laststype;
2152 data->laststatval = PL_laststatval;
2153 data->statcache = PL_statcache;
2154 }
2155
2156 /* now build the result vector out of all the parameters and the data_sv */
2157 {
2158 int i;
2159
2160 for (i = 0; i < items; ++i)
2161 av_push (state, SvREFCNT_inc_NN (ST (i)));
2162 }
2163
2164 av_push (state, data_sv);
2165
2166 api_ready (aTHX_ coro);
2167 SvREFCNT_dec (coro);
2168 SvREFCNT_dec ((AV *)state);
2169}
2170
2171static int
2172slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2173{
2174 AV *state = (AV *)frame->data;
2175
2176 /* one element that is an RV? repeat! */
2177 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2178 return 1;
2179
2180 /* restore status */
2181 {
2182 SV *data_sv = av_pop (state);
2183 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2184
2185 errno = data->errorno;
2186 PL_laststype = data->laststype;
2187 PL_laststatval = data->laststatval;
2188 PL_statcache = data->statcache;
2189
2190 SvREFCNT_dec (data_sv);
2191 }
2192
2193 /* push result values */
2194 {
2195 dSP;
2196 int i;
2197
2198 EXTEND (SP, AvFILLp (state) + 1);
2199 for (i = 0; i <= AvFILLp (state); ++i)
2200 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2201
2202 PUTBACK;
2203 }
2204
2205 return 0;
2206}
2207
2208static void
2209slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2210{
2211 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2212 SV *coro_hv = SvRV (coro_current);
2213 struct coro *coro = SvSTATE_hv (coro_hv);
2214
2215 /* put our coroutine id on the state arg */
2216 av_push (state, SvREFCNT_inc_NN (coro_hv));
2217
2218 /* first see whether we have a non-zero priority and set it as AIO prio */
2219 if (coro->prio)
2220 {
2221 dSP;
2222
2223 static SV *prio_cv;
2224 static SV *prio_sv;
2225
2226 if (expect_false (!prio_cv))
2227 {
2228 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2229 prio_sv = newSViv (0);
2230 }
2231
2232 PUSHMARK (SP);
2233 sv_setiv (prio_sv, coro->prio);
2234 XPUSHs (prio_sv);
2235
2236 PUTBACK;
2237 call_sv (prio_cv, G_VOID | G_DISCARD);
2238 }
2239
2240 /* now call the original request */
2241 {
2242 dSP;
2243 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2244 int i;
2245
2246 PUSHMARK (SP);
2247
2248 /* first push all args to the stack */
2249 EXTEND (SP, items + 1);
2250
2251 for (i = 0; i < items; ++i)
2252 PUSHs (arg [i]);
2253
2254 /* now push the callback closure */
2255 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2256
2257 /* now call the AIO function - we assume our request is uncancelable */
2258 PUTBACK;
2259 call_sv ((SV *)req, G_VOID | G_DISCARD);
2260 }
2261
2262 /* now that the requets is going, we loop toll we have a result */
2263 frame->data = (void *)state;
2264 frame->prepare = prepare_schedule;
2265 frame->check = slf_check_aio_req;
2266}
2267
2268static void
2269coro_aio_req_xs (pTHX_ CV *cv)
2270{
2271 dXSARGS;
2272
2273 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2274
2275 XSRETURN_EMPTY;
2276}
2277
2278/*****************************************************************************/
1807 2279
1808MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2280MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1809 2281
1810PROTOTYPES: DISABLE 2282PROTOTYPES: DISABLE
1811 2283
1812BOOT: 2284BOOT:
1813{ 2285{
1814#ifdef USE_ITHREADS 2286#ifdef USE_ITHREADS
1815 MUTEX_INIT (&coro_lock);
1816# if CORO_PTHREAD 2287# if CORO_PTHREAD
1817 coro_thx = PERL_GET_CONTEXT; 2288 coro_thx = PERL_GET_CONTEXT;
1818# endif 2289# endif
1819#endif 2290#endif
1820 BOOT_PAGESIZE; 2291 BOOT_PAGESIZE;
… …
1841 main_top_env = PL_top_env; 2312 main_top_env = PL_top_env;
1842 2313
1843 while (main_top_env->je_prev) 2314 while (main_top_env->je_prev)
1844 main_top_env = main_top_env->je_prev; 2315 main_top_env = main_top_env->je_prev;
1845 2316
2317 {
2318 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2319
2320 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2321 hv_store_ent (PL_custom_op_names, slf,
2322 newSVpv ("coro_slf", 0), 0);
2323
2324 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2325 hv_store_ent (PL_custom_op_descs, slf,
2326 newSVpv ("coro schedule like function", 0), 0);
2327 }
2328
1846 coroapi.ver = CORO_API_VERSION; 2329 coroapi.ver = CORO_API_VERSION;
1847 coroapi.rev = CORO_API_REVISION; 2330 coroapi.rev = CORO_API_REVISION;
2331
1848 coroapi.transfer = api_transfer; 2332 coroapi.transfer = api_transfer;
2333
2334 coroapi.sv_state = SvSTATE_;
2335 coroapi.execute_slf = api_execute_slf;
2336 coroapi.prepare_nop = prepare_nop;
2337 coroapi.prepare_schedule = prepare_schedule;
2338 coroapi.prepare_cede = prepare_cede;
2339 coroapi.prepare_cede_notself = prepare_cede_notself;
1849 2340
1850 { 2341 {
1851 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2342 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1852 2343
1853 if (!svp) croak ("Time::HiRes is required"); 2344 if (!svp) croak ("Time::HiRes is required");
… …
1886 av_push (coro->args, newSVsv (ST (i))); 2377 av_push (coro->args, newSVsv (ST (i)));
1887} 2378}
1888 OUTPUT: 2379 OUTPUT:
1889 RETVAL 2380 RETVAL
1890 2381
1891# these not obviously related functions are all rolled into the same xs
1892# function to increase chances that they all will call transfer with the same
1893# stack offset
1894void 2382void
1895_set_stacklevel (...) 2383_set_stacklevel (...)
1896 ALIAS: 2384 CODE:
1897 Coro::State::transfer = 1 2385 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1898 Coro::schedule = 2
1899 Coro::cede = 3
1900 Coro::cede_notself = 4
1901 CODE:
1902{
1903 struct transfer_args ta;
1904 2386
1905 PUTBACK; 2387void
1906 switch (ix) 2388transfer (...)
1907 { 2389 PROTOTYPE: $$
1908 case 0: 2390 CODE:
1909 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (ST (0))); 2391 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1910 break;
1911
1912 case 1:
1913 if (items != 2)
1914 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1915
1916 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1917 break;
1918
1919 case 2:
1920 prepare_schedule (aTHX_ &ta);
1921 break;
1922
1923 case 3:
1924 prepare_cede (aTHX_ &ta);
1925 break;
1926
1927 case 4:
1928 if (!prepare_cede_notself (aTHX_ &ta))
1929 XSRETURN_EMPTY;
1930
1931 break;
1932 }
1933 SPAGAIN;
1934
1935 BARRIER;
1936 PUTBACK;
1937 TRANSFER (ta, 0);
1938 SPAGAIN; /* might be the sp of a different coroutine now */
1939 /* be extra careful not to ever do anything after TRANSFER */
1940}
1941 2392
1942bool 2393bool
1943_destroy (SV *coro_sv) 2394_destroy (SV *coro_sv)
1944 CODE: 2395 CODE:
1945 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2396 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1952 CODE: 2403 CODE:
1953 _exit (code); 2404 _exit (code);
1954 2405
1955int 2406int
1956cctx_stacksize (int new_stacksize = 0) 2407cctx_stacksize (int new_stacksize = 0)
2408 PROTOTYPE: ;$
1957 CODE: 2409 CODE:
1958 RETVAL = cctx_stacksize; 2410 RETVAL = cctx_stacksize;
1959 if (new_stacksize) 2411 if (new_stacksize)
1960 { 2412 {
1961 cctx_stacksize = new_stacksize; 2413 cctx_stacksize = new_stacksize;
… …
1964 OUTPUT: 2416 OUTPUT:
1965 RETVAL 2417 RETVAL
1966 2418
1967int 2419int
1968cctx_max_idle (int max_idle = 0) 2420cctx_max_idle (int max_idle = 0)
2421 PROTOTYPE: ;$
1969 CODE: 2422 CODE:
1970 RETVAL = cctx_max_idle; 2423 RETVAL = cctx_max_idle;
1971 if (max_idle > 1) 2424 if (max_idle > 1)
1972 cctx_max_idle = max_idle; 2425 cctx_max_idle = max_idle;
1973 OUTPUT: 2426 OUTPUT:
1974 RETVAL 2427 RETVAL
1975 2428
1976int 2429int
1977cctx_count () 2430cctx_count ()
2431 PROTOTYPE:
1978 CODE: 2432 CODE:
1979 RETVAL = cctx_count; 2433 RETVAL = cctx_count;
1980 OUTPUT: 2434 OUTPUT:
1981 RETVAL 2435 RETVAL
1982 2436
1983int 2437int
1984cctx_idle () 2438cctx_idle ()
2439 PROTOTYPE:
1985 CODE: 2440 CODE:
1986 RETVAL = cctx_idle; 2441 RETVAL = cctx_idle;
1987 OUTPUT: 2442 OUTPUT:
1988 RETVAL 2443 RETVAL
1989 2444
1990void 2445void
1991list () 2446list ()
2447 PROTOTYPE:
1992 PPCODE: 2448 PPCODE:
1993{ 2449{
1994 struct coro *coro; 2450 struct coro *coro;
1995 for (coro = coro_first; coro; coro = coro->next) 2451 for (coro = coro_first; coro; coro = coro->next)
1996 if (coro->hv) 2452 if (coro->hv)
… …
2058 2514
2059void 2515void
2060throw (Coro::State self, SV *throw = &PL_sv_undef) 2516throw (Coro::State self, SV *throw = &PL_sv_undef)
2061 PROTOTYPE: $;$ 2517 PROTOTYPE: $;$
2062 CODE: 2518 CODE:
2519{
2520 struct coro *current = SvSTATE_current;
2521 SV **throwp = self == current ? &coro_throw : &self->throw;
2063 SvREFCNT_dec (self->throw); 2522 SvREFCNT_dec (*throwp);
2064 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2523 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2524}
2065 2525
2066void 2526void
2067api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2527api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2528 PROTOTYPE: $;$
2529 C_ARGS: aTHX_ coro, flags
2068 2530
2069SV * 2531SV *
2070has_cctx (Coro::State coro) 2532has_cctx (Coro::State coro)
2071 PROTOTYPE: $ 2533 PROTOTYPE: $
2072 CODE: 2534 CODE:
… …
2096 OUTPUT: 2558 OUTPUT:
2097 RETVAL 2559 RETVAL
2098 2560
2099void 2561void
2100force_cctx () 2562force_cctx ()
2563 PROTOTYPE:
2101 CODE: 2564 CODE:
2102 struct coro *coro = SvSTATE (coro_current);
2103 coro->cctx->idle_sp = 0; 2565 SvSTATE_current->cctx->idle_sp = 0;
2104 2566
2105void 2567void
2106swap_defsv (Coro::State self) 2568swap_defsv (Coro::State self)
2107 PROTOTYPE: $ 2569 PROTOTYPE: $
2108 ALIAS: 2570 ALIAS:
2109 swap_defav = 1 2571 swap_defav = 1
2110 CODE: 2572 CODE:
2111 if (!self->slot) 2573 if (!self->slot)
2112 croak ("cannot swap state with coroutine that has no saved state"); 2574 croak ("cannot swap state with coroutine that has no saved state,");
2113 else 2575 else
2114 { 2576 {
2115 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2577 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2116 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2578 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2117 2579
2118 SV *tmp = *src; *src = *dst; *dst = tmp; 2580 SV *tmp = *src; *src = *dst; *dst = tmp;
2119 } 2581 }
2582
2120 2583
2121MODULE = Coro::State PACKAGE = Coro 2584MODULE = Coro::State PACKAGE = Coro
2122 2585
2123BOOT: 2586BOOT:
2124{ 2587{
… …
2142 2605
2143 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2606 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2144 coro_ready[i] = newAV (); 2607 coro_ready[i] = newAV ();
2145 2608
2146 { 2609 {
2147 SV *sv = perl_get_sv ("Coro::API", TRUE); 2610 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2148 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2149 2611
2150 coroapi.schedule = api_schedule; 2612 coroapi.schedule = api_schedule;
2151 coroapi.cede = api_cede; 2613 coroapi.cede = api_cede;
2152 coroapi.cede_notself = api_cede_notself; 2614 coroapi.cede_notself = api_cede_notself;
2153 coroapi.ready = api_ready; 2615 coroapi.ready = api_ready;
2154 coroapi.is_ready = api_is_ready; 2616 coroapi.is_ready = api_is_ready;
2155 coroapi.nready = &coro_nready; 2617 coroapi.nready = coro_nready;
2156 coroapi.current = coro_current; 2618 coroapi.current = coro_current;
2157 2619
2158 GCoroAPI = &coroapi; 2620 GCoroAPI = &coroapi;
2159 sv_setiv (sv, (IV)&coroapi); 2621 sv_setiv (sv, (IV)&coroapi);
2160 SvREADONLY_on (sv); 2622 SvREADONLY_on (sv);
2161 } 2623 }
2162} 2624}
2625
2626void
2627schedule (...)
2628 CODE:
2629 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2630
2631void
2632cede (...)
2633 CODE:
2634 CORO_EXECUTE_SLF_XS (slf_init_cede);
2635
2636void
2637cede_notself (...)
2638 CODE:
2639 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2163 2640
2164void 2641void
2165_set_current (SV *current) 2642_set_current (SV *current)
2166 PROTOTYPE: $ 2643 PROTOTYPE: $
2167 CODE: 2644 CODE:
… …
2170 2647
2171void 2648void
2172_set_readyhook (SV *hook) 2649_set_readyhook (SV *hook)
2173 PROTOTYPE: $ 2650 PROTOTYPE: $
2174 CODE: 2651 CODE:
2175 LOCK;
2176 SvREFCNT_dec (coro_readyhook); 2652 SvREFCNT_dec (coro_readyhook);
2177 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2653 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2178 UNLOCK;
2179 2654
2180int 2655int
2181prio (Coro::State coro, int newprio = 0) 2656prio (Coro::State coro, int newprio = 0)
2657 PROTOTYPE: $;$
2182 ALIAS: 2658 ALIAS:
2183 nice = 1 2659 nice = 1
2184 CODE: 2660 CODE:
2185{ 2661{
2186 RETVAL = coro->prio; 2662 RETVAL = coro->prio;
… …
2201 2677
2202SV * 2678SV *
2203ready (SV *self) 2679ready (SV *self)
2204 PROTOTYPE: $ 2680 PROTOTYPE: $
2205 CODE: 2681 CODE:
2206 RETVAL = boolSV (api_ready (self)); 2682 RETVAL = boolSV (api_ready (aTHX_ self));
2207 OUTPUT: 2683 OUTPUT:
2208 RETVAL 2684 RETVAL
2209 2685
2210int 2686int
2211nready (...) 2687nready (...)
… …
2218# for async_pool speedup 2694# for async_pool speedup
2219void 2695void
2220_pool_1 (SV *cb) 2696_pool_1 (SV *cb)
2221 CODE: 2697 CODE:
2222{ 2698{
2223 struct coro *coro = SvSTATE (coro_current);
2224 HV *hv = (HV *)SvRV (coro_current); 2699 HV *hv = (HV *)SvRV (coro_current);
2700 struct coro *coro = SvSTATE_hv ((SV *)hv);
2225 AV *defav = GvAV (PL_defgv); 2701 AV *defav = GvAV (PL_defgv);
2226 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2702 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2227 AV *invoke_av; 2703 AV *invoke_av;
2228 int i, len; 2704 int i, len;
2229 2705
… …
2250 { 2726 {
2251 av_fill (defav, len - 1); 2727 av_fill (defav, len - 1);
2252 for (i = 0; i < len; ++i) 2728 for (i = 0; i < len; ++i)
2253 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 2729 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2254 } 2730 }
2255
2256 SvREFCNT_dec (invoke);
2257} 2731}
2258 2732
2259void 2733void
2260_pool_2 (SV *cb) 2734_pool_2 (SV *cb)
2261 CODE: 2735 CODE:
2262{ 2736{
2263 struct coro *coro = SvSTATE (coro_current); 2737 HV *hv = (HV *)SvRV (coro_current);
2738 struct coro *coro = SvSTATE_hv ((SV *)hv);
2264 2739
2265 sv_setsv (cb, &PL_sv_undef); 2740 sv_setsv (cb, &PL_sv_undef);
2266 2741
2267 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2742 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2268 coro->saved_deffh = 0; 2743 coro->saved_deffh = 0;
… …
2275 SvREFCNT_dec (old); 2750 SvREFCNT_dec (old);
2276 croak ("\3async_pool terminate\2\n"); 2751 croak ("\3async_pool terminate\2\n");
2277 } 2752 }
2278 2753
2279 av_clear (GvAV (PL_defgv)); 2754 av_clear (GvAV (PL_defgv));
2280 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2755 hv_store (hv, "desc", sizeof ("desc") - 1,
2281 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2756 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2282 2757
2283 coro->prio = 0; 2758 coro->prio = 0;
2284 2759
2285 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2760 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2286 api_trace (coro_current, 0); 2761 api_trace (aTHX_ coro_current, 0);
2287 2762
2288 av_push (av_async_pool, newSVsv (coro_current)); 2763 av_push (av_async_pool, newSVsv (coro_current));
2289} 2764}
2290 2765
2291#if 0
2292 2766
2293void 2767MODULE = Coro::State PACKAGE = PerlIO::cede
2294_generator_call (...) 2768
2295 PROTOTYPE: @ 2769BOOT:
2296 PPCODE: 2770 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2297 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr); 2771
2298 xxxx 2772
2299 abort (); 2773MODULE = Coro::State PACKAGE = Coro::Semaphore
2300 2774
2301SV * 2775SV *
2302gensub (SV *sub, ...) 2776new (SV *klass, SV *count_ = 0)
2303 PROTOTYPE: &;@ 2777 CODE:
2304 CODE:
2305{ 2778{
2306 struct coro *coro; 2779 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2307 MAGIC *mg; 2780 AV *av = newAV ();
2308 CV *xcv; 2781 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2309 CV *ncv = (CV *)newSV_type (SVt_PVCV); 2782 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2310 int i;
2311
2312 CvGV (ncv) = CvGV (cv);
2313 CvFILE (ncv) = CvFILE (cv);
2314
2315 Newz (0, coro, 1, struct coro);
2316 coro->args = newAV ();
2317 coro->flags = CF_NEW;
2318
2319 av_extend (coro->args, items - 1);
2320 for (i = 1; i < items; i++)
2321 av_push (coro->args, newSVsv (ST (i)));
2322
2323 CvISXSUB_on (ncv);
2324 CvXSUBANY (ncv).any_ptr = (void *)coro;
2325
2326 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2327
2328 CvXSUB (ncv) = CvXSUB (xcv);
2329 CvANON_on (ncv);
2330
2331 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2332 RETVAL = newRV_noinc ((SV *)ncv);
2333} 2783}
2334 OUTPUT: 2784 OUTPUT:
2335 RETVAL 2785 RETVAL
2336 2786
2337#endif 2787SV *
2338 2788count (SV *self)
2339 2789 CODE:
2340MODULE = Coro::State PACKAGE = Coro::AIO 2790 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2791 OUTPUT:
2792 RETVAL
2341 2793
2342void 2794void
2343_get_state (SV *self) 2795up (SV *self, int adjust = 1)
2344 PPCODE: 2796 ALIAS:
2345{ 2797 adjust = 1
2346 AV *defav = GvAV (PL_defgv); 2798 CODE:
2347 AV *av = newAV (); 2799 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2348 int i;
2349 SV *data_sv = newSV (sizeof (struct io_state));
2350 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2351 SvCUR_set (data_sv, sizeof (struct io_state));
2352 SvPOK_only (data_sv);
2353
2354 data->errorno = errno;
2355 data->laststype = PL_laststype;
2356 data->laststatval = PL_laststatval;
2357 data->statcache = PL_statcache;
2358
2359 av_extend (av, AvFILLp (defav) + 1 + 1);
2360
2361 for (i = 0; i <= AvFILLp (defav); ++i)
2362 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2363
2364 av_push (av, data_sv);
2365
2366 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2367
2368 api_ready (self);
2369}
2370 2800
2371void 2801void
2372_set_state (SV *state) 2802down (SV *self)
2373 PROTOTYPE: $ 2803 CODE:
2374 PPCODE: 2804 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2805
2806void
2807try (SV *self)
2808 PPCODE:
2375{ 2809{
2376 AV *av = (AV *)SvRV (state); 2810 AV *av = (AV *)SvRV (self);
2377 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 2811 SV *count_sv = AvARRAY (av)[0];
2812 IV count = SvIVX (count_sv);
2813
2814 if (count > 0)
2815 {
2816 --count;
2817 SvIVX (count_sv) = count;
2818 XSRETURN_YES;
2819 }
2820 else
2821 XSRETURN_NO;
2822}
2823
2824void
2825waiters (SV *self)
2826 CODE:
2827{
2828 AV *av = (AV *)SvRV (self);
2829
2830 if (GIMME_V == G_SCALAR)
2831 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2832 else
2833 {
2378 int i; 2834 int i;
2379
2380 errno = data->errorno;
2381 PL_laststype = data->laststype;
2382 PL_laststatval = data->laststatval;
2383 PL_statcache = data->statcache;
2384
2385 EXTEND (SP, AvFILLp (av)); 2835 EXTEND (SP, AvFILLp (av) + 1 - 1);
2386 for (i = 0; i < AvFILLp (av); ++i) 2836 for (i = 1; i <= AvFILLp (av); ++i)
2387 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 2837 PUSHs (newSVsv (AvARRAY (av)[i]));
2838 }
2388} 2839}
2389 2840
2390 2841
2391MODULE = Coro::State PACKAGE = Coro::AnyEvent 2842MODULE = Coro::State PACKAGE = Coro::AnyEvent
2392 2843
2393BOOT: 2844BOOT:
2394 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2845 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2395 2846
2396SV * 2847void
2397_schedule (...) 2848_schedule (...)
2398 PROTOTYPE: @
2399 CODE: 2849 CODE:
2400{ 2850{
2401 static int incede; 2851 static int incede;
2402 2852
2403 api_cede_notself (); 2853 api_cede_notself (aTHX);
2404 2854
2405 ++incede; 2855 ++incede;
2406 while (coro_nready >= incede && api_cede ()) 2856 while (coro_nready >= incede && api_cede (aTHX))
2407 ; 2857 ;
2408 2858
2409 sv_setsv (sv_activity, &PL_sv_undef); 2859 sv_setsv (sv_activity, &PL_sv_undef);
2410 if (coro_nready >= incede) 2860 if (coro_nready >= incede)
2411 { 2861 {
… …
2417 2867
2418 --incede; 2868 --incede;
2419} 2869}
2420 2870
2421 2871
2422MODULE = Coro::State PACKAGE = PerlIO::cede 2872MODULE = Coro::State PACKAGE = Coro::AIO
2423 2873
2424BOOT: 2874void
2425 PerlIO_define_layer (aTHX_ &PerlIO_cede); 2875_register (char *target, char *proto, SV *req)
2876 CODE:
2877{
2878 HV *st;
2879 GV *gvp;
2880 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2881 /* newXSproto doesn't return the CV on 5.8 */
2882 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2883 sv_setpv ((SV *)slf_cv, proto);
2884 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2885}
2886

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