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Comparing Coro/Coro/State.xs (file contents):
Revision 1.261 by root, Mon Nov 10 05:09:30 2008 UTC vs.
Revision 1.302 by root, Wed Nov 19 04:48:24 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
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#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
124#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
125#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
126 131
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
128 133
129#if __GNUC__ >= 3 134#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
133#else 138#else
134# define attribute(x) 139# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 140# define expect(expr,value) (expr)
141# define INLINE static
137#endif 142#endif
138 143
139#define expect_false(expr) expect ((expr) != 0, 0) 144#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
141 146
142#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
143 148
144#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
145 151
146#ifdef USE_ITHREADS 152#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 153# if CORO_PTHREAD
152static void *coro_thx; 154static void *coro_thx;
153# endif 155# endif
154
155#else
156
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 156#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};
176 157
177static double (*nvtime)(); /* so why doesn't it take void? */ 158static double (*nvtime)(); /* so why doesn't it take void? */
159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
178 163
179static U32 cctx_gen; 164static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 168static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 170static 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};
192 171
193static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 174static SV *rv_diehook;
196static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 196};
218 197
219/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 199typedef struct coro_cctx
200{
221 struct coro_cctx *next; 201 struct coro_cctx *next;
222 202
223 /* the stack */ 203 /* the stack */
224 void *sptr; 204 void *sptr;
225 size_t ssize; 205 size_t ssize;
… …
243 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
245}; 225};
246 226
247/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct { 228typedef struct
229{
249 SV *defsv; 230 SV *defsv;
250 AV *defav; 231 AV *defav;
251 SV *errsv; 232 SV *errsv;
252 SV *irsgv; 233 SV *irsgv;
253#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
257 238
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 240
260/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
261struct coro { 242struct coro {
262 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 244 coro_cctx *cctx;
264 245
265 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 248 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
268 250
269 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
273 256
274 /* statistics */ 257 /* statistics */
275 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
276 259
277 /* coro process data */ 260 /* coro process data */
278 int prio; 261 int prio;
279 SV *throw; /* exception to be thrown */ 262 SV *except; /* exception to be thrown */
263 SV *rouse_cb;
280 264
281 /* async_pool */ 265 /* async_pool */
282 SV *saved_deffh; 266 SV *saved_deffh;
283 267
284 /* linked list */ 268 /* linked list */
285 struct coro *next, *prev; 269 struct coro *next, *prev;
286}; 270};
287 271
288typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
274
275/* the following variables are effectively part of the perl context */
276/* and get copied between struct coro and these variables */
277/* the mainr easonw e don't support windows process emulation */
278static struct CoroSLF slf_frame; /* the current slf frame */
290 279
291/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
292 281
293#define PRIO_MAX 3 282#define PRIO_MAX 3
294#define PRIO_HIGH 1 283#define PRIO_HIGH 1
… …
299 288
300/* for Coro.pm */ 289/* for Coro.pm */
301static SV *coro_current; 290static SV *coro_current;
302static SV *coro_readyhook; 291static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
304static int coro_nready;
305static struct coro *coro_first; 293static struct coro *coro_first;
294#define coro_nready coroapi.nready
306 295
307/** lowlevel stuff **********************************************************/ 296/** lowlevel stuff **********************************************************/
308 297
309static SV * 298static SV *
310coro_get_sv (pTHX_ const char *name, int create) 299coro_get_sv (pTHX_ const char *name, int create)
… …
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 385
397 return 0; 386 return 0;
398} 387}
399 388
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext 389#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext 390#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 391
403static MGVTBL coro_cv_vtbl = { 392static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 393 0, 0, 0, 0,
405 coro_cv_free 394 coro_cv_free
406}; 395};
407 396
397#define CORO_MAGIC_NN(sv, type) \
398 (expect_true (SvMAGIC (sv)->mg_type == type) \
399 ? SvMAGIC (sv) \
400 : mg_find (sv, type))
401
408#define CORO_MAGIC(sv, type) \ 402#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \ 403 (expect_true (SvMAGIC (sv)) \
410 ? SvMAGIC (sv)->mg_type == type \ 404 ? CORO_MAGIC_NN (sv, type) \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0 405 : 0)
414 406
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 407#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) 408#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
417 409
418static struct coro * 410INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro) 411SvSTATE_ (pTHX_ SV *coro)
420{ 412{
421 HV *stash; 413 HV *stash;
422 MAGIC *mg; 414 MAGIC *mg;
423 415
… …
438 mg = CORO_MAGIC_state (coro); 430 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr; 431 return (struct coro *)mg->mg_ptr;
440} 432}
441 433
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 434#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
435
436/* faster than SvSTATE, but expects a coroutine hv */
437#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
438#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443 439
444/* the next two functions merely cache the padlists */ 440/* the next two functions merely cache the padlists */
445static void 441static void
446get_padlist (pTHX_ CV *cv) 442get_padlist (pTHX_ CV *cv)
447{ 443{
… …
514 CvPADLIST (cv) = (AV *)POPs; 510 CvPADLIST (cv) = (AV *)POPs;
515 } 511 }
516 512
517 PUTBACK; 513 PUTBACK;
518 } 514 }
515
516 slf_frame = c->slf_frame;
517 CORO_THROW = c->except;
519} 518}
520 519
521static void 520static void
522save_perl (pTHX_ Coro__State c) 521save_perl (pTHX_ Coro__State c)
523{ 522{
523 c->except = CORO_THROW;
524 c->slf_frame = slf_frame;
525
524 { 526 {
525 dSP; 527 dSP;
526 I32 cxix = cxstack_ix; 528 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 529 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 530 PERL_SI *top_si = PL_curstackinfo;
… …
595 #undef VAR 597 #undef VAR
596 } 598 }
597} 599}
598 600
599/* 601/*
600 * allocate various perl stacks. This is an exact copy 602 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 603 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 604 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 605 * not usually need a lot of stackspace.
604 */ 606 */
605#if CORO_PREFER_PERL_FUNCTIONS 607#if CORO_PREFER_PERL_FUNCTIONS
… …
807 809
808 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
809} 811}
810 812
811static void 813static void
814prepare_nop (pTHX_ struct coro_transfer_args *ta)
815{
816 /* kind of mega-hacky, but works */
817 ta->next = ta->prev = (struct coro *)ta;
818}
819
820static int
821slf_check_nop (pTHX_ struct CoroSLF *frame)
822{
823 return 0;
824}
825
826static UNOP coro_setup_op;
827
828static void NOINLINE /* noinline to keep it out of the transfer fast path */
812coro_setup (pTHX_ struct coro *coro) 829coro_setup (pTHX_ struct coro *coro)
813{ 830{
814 /* 831 /*
815 * emulate part of the perl startup here. 832 * emulate part of the perl startup here.
816 */ 833 */
… …
843 { 860 {
844 dSP; 861 dSP;
845 UNOP myop; 862 UNOP myop;
846 863
847 Zero (&myop, 1, UNOP); 864 Zero (&myop, 1, UNOP);
848 myop.op_next = Nullop; 865 myop.op_next = Nullop;
849 myop.op_flags = OPf_WANT_VOID; 866 myop.op_flags = OPf_WANT_VOID;
850 867
851 PUSHMARK (SP); 868 PUSHMARK (SP);
852 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
853 PUTBACK; 870 PUTBACK;
… …
855 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
856 SPAGAIN; 873 SPAGAIN;
857 } 874 }
858 875
859 /* this newly created coroutine might be run on an existing cctx which most 876 /* this newly created coroutine might be run on an existing cctx which most
860 * likely was suspended in set_stacklevel, called from entersub. 877 * 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 */ 878 */
864 ENTER; 879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881
882 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
883 coro_setup_op.op_next = PL_op;
884 coro_setup_op.op_type = OP_CUSTOM;
885 coro_setup_op.op_ppaddr = pp_slf;
886 /* no flags required, as an init function won't be called */
887
888 PL_op = (OP *)&coro_setup_op;
889
890 /* copy throw, in case it was set before coro_setup */
891 CORO_THROW = coro->except;
865} 892}
866 893
867static void 894static void
868coro_destruct (pTHX_ struct coro *coro) 895coro_destruct (pTHX_ struct coro *coro)
869{ 896{
… …
892 SvREFCNT_dec (GvSV (irsgv)); 919 SvREFCNT_dec (GvSV (irsgv));
893 920
894 SvREFCNT_dec (PL_diehook); 921 SvREFCNT_dec (PL_diehook);
895 SvREFCNT_dec (PL_warnhook); 922 SvREFCNT_dec (PL_warnhook);
896 923
924 SvREFCNT_dec (CORO_THROW);
897 SvREFCNT_dec (coro->saved_deffh); 925 SvREFCNT_dec (coro->saved_deffh);
898 SvREFCNT_dec (coro->throw); 926 SvREFCNT_dec (coro->rouse_cb);
899 927
900 coro_destruct_stacks (aTHX); 928 coro_destruct_stacks (aTHX);
901} 929}
902 930
903static void 931INLINE void
904free_coro_mortal (pTHX) 932free_coro_mortal (pTHX)
905{ 933{
906 if (expect_true (coro_mortal)) 934 if (expect_true (coro_mortal))
907 { 935 {
908 SvREFCNT_dec (coro_mortal); 936 SvREFCNT_dec (coro_mortal);
… …
913static int 941static int
914runops_trace (pTHX) 942runops_trace (pTHX)
915{ 943{
916 COP *oldcop = 0; 944 COP *oldcop = 0;
917 int oldcxix = -2; 945 int oldcxix = -2;
918 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 946 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
919 coro_cctx *cctx = coro->cctx; 947 coro_cctx *cctx = coro->cctx;
920 948
921 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
922 { 950 {
923 PERL_ASYNC_CHECK (); 951 PERL_ASYNC_CHECK ();
… …
1032 1060
1033 TAINT_NOT; 1061 TAINT_NOT;
1034 return 0; 1062 return 0;
1035} 1063}
1036 1064
1065static struct coro_cctx *cctx_ssl_cctx;
1066static struct CoroSLF cctx_ssl_frame;
1067
1037static void 1068static void
1038prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1069slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1039{ 1070{
1040 ta->prev = (struct coro *)cctx; 1071 ta->prev = (struct coro *)cctx_ssl_cctx;
1041 ta->next = 0; 1072 ta->next = 0;
1042} 1073}
1043 1074
1044/* inject a fake call to Coro::State::_cctx_init into the execution */ 1075static int
1045/* _cctx_init should be careful, as it could be called at almost any time */ 1076slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1046/* during execution of a perl program */ 1077{
1047/* also initialises PL_top_env */ 1078 *frame = cctx_ssl_frame;
1079
1080 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1081}
1082
1083/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1048static void NOINLINE 1084static void NOINLINE
1049cctx_prepare (pTHX_ coro_cctx *cctx) 1085cctx_prepare (pTHX_ coro_cctx *cctx)
1050{ 1086{
1051 dSP;
1052 UNOP myop;
1053
1054 PL_top_env = &PL_start_env; 1087 PL_top_env = &PL_start_env;
1055 1088
1056 if (cctx->flags & CC_TRACE) 1089 if (cctx->flags & CC_TRACE)
1057 PL_runops = runops_trace; 1090 PL_runops = runops_trace;
1058 1091
1059 Zero (&myop, 1, UNOP); 1092 /* we already must be executing an SLF op, there is no other valid way
1060 myop.op_next = PL_op; 1093 * that can lead to creation of a new cctx */
1061 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1094 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1095 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1062 1096
1063 PUSHMARK (SP); 1097 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1064 EXTEND (SP, 2); 1098 cctx_ssl_cctx = cctx;
1065 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1099 cctx_ssl_frame = slf_frame;
1066 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1067 PUTBACK;
1068 PL_op = (OP *)&myop;
1069 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1070 SPAGAIN;
1071}
1072 1100
1101 slf_frame.prepare = slf_prepare_set_stacklevel;
1102 slf_frame.check = slf_check_set_stacklevel;
1103}
1104
1073/* the tail of transfer: execute stuff we can onyl do afetr a transfer */ 1105/* the tail of transfer: execute stuff we can only do after a transfer */
1074static void 1106INLINE void
1075transfer_tail (void) 1107transfer_tail (pTHX)
1076{ 1108{
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); 1109 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} 1110}
1093 1111
1094/* 1112/*
1095 * this is a _very_ stripped down perl interpreter ;) 1113 * this is a _very_ stripped down perl interpreter ;)
1096 */ 1114 */
… …
1103# endif 1121# endif
1104#endif 1122#endif
1105 { 1123 {
1106 dTHX; 1124 dTHX;
1107 1125
1108 /* entersub called ENTER, but we never 'returned', undo that here */ 1126 /* normally we would need to skip the entersub here */
1109 LEAVE; 1127 /* 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; 1128 /* PL_nop = PL_nop->op_next */
1113 1129
1114 /* inject a fake subroutine call to cctx_init */ 1130 /* inject a fake subroutine call to cctx_init */
1115 cctx_prepare (aTHX_ (coro_cctx *)arg); 1131 cctx_prepare (aTHX_ (coro_cctx *)arg);
1116 1132
1117 /* cctx_run is the alternative tail of transfer() */ 1133 /* cctx_run is the alternative tail of transfer() */
1118 transfer_tail (); 1134 transfer_tail (aTHX);
1119 1135
1120 /* somebody or something will hit me for both perl_run and PL_restartop */ 1136 /* somebody or something will hit me for both perl_run and PL_restartop */
1121 PL_restartop = PL_op; 1137 PL_restartop = PL_op;
1122 perl_run (PL_curinterp); 1138 perl_run (PL_curinterp);
1123 1139
… …
1173 /* mmap supposedly does allocate-on-write for us */ 1189 /* 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); 1190 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1175 1191
1176 if (cctx->sptr != (void *)-1) 1192 if (cctx->sptr != (void *)-1)
1177 { 1193 {
1178# if CORO_STACKGUARD 1194 #if CORO_STACKGUARD
1179 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1195 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1180# endif 1196 #endif
1181 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1197 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1182 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1198 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1183 cctx->flags |= CC_MAPPED; 1199 cctx->flags |= CC_MAPPED;
1184 } 1200 }
1185 else 1201 else
1186#endif 1202#endif
1187 { 1203 {
1188 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1204 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1189 New (0, cctx->sptr, cctx_stacksize, long); 1205 New (0, cctx->sptr, cctx_stacksize, long);
1190 1206
1191 if (!cctx->sptr) 1207 if (!cctx->sptr)
1192 { 1208 {
1193 perror ("FATAL: unable to allocate stack for coroutine"); 1209 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1194 _exit (EXIT_FAILURE); 1210 _exit (EXIT_FAILURE);
1195 } 1211 }
1196 1212
1197 stack_start = cctx->sptr; 1213 stack_start = cctx->sptr;
1198 stack_size = cctx->ssize; 1214 stack_size = cctx->ssize;
1199 } 1215 }
1200 1216
1201 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1217 #if CORO_USE_VALGRIND
1218 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1219 #endif
1220
1202 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1221 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1203 1222
1204 return cctx; 1223 return cctx;
1205} 1224}
1206 1225
… …
1214 coro_destroy (&cctx->cctx); 1233 coro_destroy (&cctx->cctx);
1215 1234
1216 /* coro_transfer creates new, empty cctx's */ 1235 /* coro_transfer creates new, empty cctx's */
1217 if (cctx->sptr) 1236 if (cctx->sptr)
1218 { 1237 {
1219#if CORO_USE_VALGRIND 1238 #if CORO_USE_VALGRIND
1220 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1239 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1221#endif 1240 #endif
1222 1241
1223#if HAVE_MMAP 1242#if HAVE_MMAP
1224 if (cctx->flags & CC_MAPPED) 1243 if (cctx->flags & CC_MAPPED)
1225 munmap (cctx->sptr, cctx->ssize); 1244 munmap (cctx->sptr, cctx->ssize);
1226 else 1245 else
… …
1253} 1272}
1254 1273
1255static void 1274static void
1256cctx_put (coro_cctx *cctx) 1275cctx_put (coro_cctx *cctx)
1257{ 1276{
1258 assert (("cctx_put called on non-initialised cctx", cctx->sptr)); 1277 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1259 1278
1260 /* free another cctx if overlimit */ 1279 /* free another cctx if overlimit */
1261 if (expect_false (cctx_idle >= cctx_max_idle)) 1280 if (expect_false (cctx_idle >= cctx_max_idle))
1262 { 1281 {
1263 coro_cctx *first = cctx_first; 1282 coro_cctx *first = cctx_first;
… …
1275/** coroutine switching *****************************************************/ 1294/** coroutine switching *****************************************************/
1276 1295
1277static void 1296static void
1278transfer_check (pTHX_ struct coro *prev, struct coro *next) 1297transfer_check (pTHX_ struct coro *prev, struct coro *next)
1279{ 1298{
1299 /* TODO: throwing up here is considered harmful */
1300
1280 if (expect_true (prev != next)) 1301 if (expect_true (prev != next))
1281 { 1302 {
1282 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1303 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"); 1304 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1284 1305
1285 if (expect_false (next->flags & CF_RUNNING)) 1306 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"); 1307 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1287 1308
1288 if (expect_false (next->flags & CF_DESTROYED)) 1309 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"); 1310 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1290 1311
1291#if !PERL_VERSION_ATLEAST (5,10,0) 1312#if !PERL_VERSION_ATLEAST (5,10,0)
1292 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1313 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"); 1314 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1294#endif 1315#endif
1295 } 1316 }
1296} 1317}
1297 1318
1298/* always use the TRANSFER macro */ 1319/* always use the TRANSFER macro */
1299static void NOINLINE 1320static void NOINLINE /* noinline so we have a fixed stackframe */
1300transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1321transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1301{ 1322{
1302 dSTACKLEVEL; 1323 dSTACKLEVEL;
1303 1324
1304 /* sometimes transfer is only called to set idle_sp */ 1325 /* sometimes transfer is only called to set idle_sp */
… …
1319 prev->flags |= CF_RUNNING; 1340 prev->flags |= CF_RUNNING;
1320 } 1341 }
1321 1342
1322 prev->flags &= ~CF_RUNNING; 1343 prev->flags &= ~CF_RUNNING;
1323 next->flags |= CF_RUNNING; 1344 next->flags |= CF_RUNNING;
1324
1325 LOCK;
1326 1345
1327 /* first get rid of the old state */ 1346 /* first get rid of the old state */
1328 save_perl (aTHX_ prev); 1347 save_perl (aTHX_ prev);
1329 1348
1330 if (expect_false (next->flags & CF_NEW)) 1349 if (expect_false (next->flags & CF_NEW))
… …
1344 prev__cctx->idle_sp == STACKLEVEL 1363 prev__cctx->idle_sp == STACKLEVEL
1345 && !(prev__cctx->flags & CC_TRACE) 1364 && !(prev__cctx->flags & CC_TRACE)
1346 && !force_cctx 1365 && !force_cctx
1347 )) 1366 ))
1348 { 1367 {
1349 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1368 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1350 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1351 1370
1352 prev->cctx = 0; 1371 prev->cctx = 0;
1353 1372
1354 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1373 /* 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 */ 1374 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1362 1381
1363 ++next->usecount; 1382 ++next->usecount;
1364 1383
1365 if (expect_true (!next->cctx)) 1384 if (expect_true (!next->cctx))
1366 next->cctx = cctx_get (aTHX); 1385 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 1386
1371 if (expect_false (prev__cctx != next->cctx)) 1387 if (expect_false (prev__cctx != next->cctx))
1372 { 1388 {
1373 prev__cctx->top_env = PL_top_env; 1389 prev__cctx->top_env = PL_top_env;
1374 PL_top_env = next->cctx->top_env; 1390 PL_top_env = next->cctx->top_env;
1375 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1391 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1376 } 1392 }
1377 1393
1378 transfer_tail (); 1394 transfer_tail (aTHX);
1379 } 1395 }
1380} 1396}
1381 1397
1382#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1398#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1383#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1399#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
… …
1387static int 1403static int
1388coro_state_destroy (pTHX_ struct coro *coro) 1404coro_state_destroy (pTHX_ struct coro *coro)
1389{ 1405{
1390 if (coro->flags & CF_DESTROYED) 1406 if (coro->flags & CF_DESTROYED)
1391 return 0; 1407 return 0;
1408
1409 if (coro->on_destroy)
1410 coro->on_destroy (aTHX_ coro);
1392 1411
1393 coro->flags |= CF_DESTROYED; 1412 coro->flags |= CF_DESTROYED;
1394 1413
1395 if (coro->flags & CF_READY) 1414 if (coro->flags & CF_READY)
1396 { 1415 {
1397 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1416 /* reduce nready, as destroying a ready coro effectively unreadies it */
1398 /* alternative: look through all ready queues and remove the coro */ 1417 /* alternative: look through all ready queues and remove the coro */
1399 LOCK;
1400 --coro_nready; 1418 --coro_nready;
1401 UNLOCK;
1402 } 1419 }
1403 else 1420 else
1404 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1421 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1405 1422
1406 if (coro->mainstack && coro->mainstack != main_mainstack) 1423 if (coro->mainstack && coro->mainstack != main_mainstack)
1407 { 1424 {
1408 struct coro temp; 1425 struct coro temp;
1409 1426
1410 if (coro->flags & CF_RUNNING) 1427 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1411 croak ("FATAL: tried to destroy currently running coroutine");
1412 1428
1413 save_perl (aTHX_ &temp); 1429 save_perl (aTHX_ &temp);
1414 load_perl (aTHX_ coro); 1430 load_perl (aTHX_ coro);
1415 1431
1416 coro_destruct (aTHX_ coro); 1432 coro_destruct (aTHX_ coro);
… …
1467# define MGf_DUP 0 1483# define MGf_DUP 0
1468#endif 1484#endif
1469}; 1485};
1470 1486
1471static void 1487static void
1472prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1488prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1473{ 1489{
1474 ta->prev = SvSTATE (prev_sv); 1490 ta->prev = SvSTATE (prev_sv);
1475 ta->next = SvSTATE (next_sv); 1491 ta->next = SvSTATE (next_sv);
1476 TRANSFER_CHECK (*ta); 1492 TRANSFER_CHECK (*ta);
1477} 1493}
1478 1494
1479static void 1495static void
1480api_transfer (SV *prev_sv, SV *next_sv) 1496api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1481{ 1497{
1482 dTHX;
1483 struct transfer_args ta; 1498 struct coro_transfer_args ta;
1484 1499
1485 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1500 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1486 TRANSFER (ta, 1); 1501 TRANSFER (ta, 1);
1487} 1502}
1488 1503
1504/*****************************************************************************/
1505/* gensub: simple closure generation utility */
1506
1507#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1508
1509/* create a closure from XS, returns a code reference */
1510/* the arg can be accessed via GENSUB_ARG from the callback */
1511/* the callback must use dXSARGS/XSRETURN */
1512static SV *
1513gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1514{
1515 CV *cv = (CV *)newSV (0);
1516
1517 sv_upgrade ((SV *)cv, SVt_PVCV);
1518
1519 CvANON_on (cv);
1520 CvISXSUB_on (cv);
1521 CvXSUB (cv) = xsub;
1522 GENSUB_ARG = arg;
1523
1524 return newRV_noinc ((SV *)cv);
1525}
1526
1489/** Coro ********************************************************************/ 1527/** Coro ********************************************************************/
1490 1528
1491static void 1529INLINE void
1492coro_enq (pTHX_ SV *coro_sv) 1530coro_enq (pTHX_ struct coro *coro)
1493{ 1531{
1494 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1532 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1495} 1533}
1496 1534
1497static SV * 1535INLINE SV *
1498coro_deq (pTHX) 1536coro_deq (pTHX)
1499{ 1537{
1500 int prio; 1538 int prio;
1501 1539
1502 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1540 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1505 1543
1506 return 0; 1544 return 0;
1507} 1545}
1508 1546
1509static int 1547static int
1510api_ready (SV *coro_sv) 1548api_ready (pTHX_ SV *coro_sv)
1511{ 1549{
1512 dTHX;
1513 struct coro *coro; 1550 struct coro *coro;
1514 SV *sv_hook; 1551 SV *sv_hook;
1515 void (*xs_hook)(void); 1552 void (*xs_hook)(void);
1516 1553
1517 if (SvROK (coro_sv)) 1554 if (SvROK (coro_sv))
… …
1522 if (coro->flags & CF_READY) 1559 if (coro->flags & CF_READY)
1523 return 0; 1560 return 0;
1524 1561
1525 coro->flags |= CF_READY; 1562 coro->flags |= CF_READY;
1526 1563
1527 LOCK;
1528
1529 sv_hook = coro_nready ? 0 : coro_readyhook; 1564 sv_hook = coro_nready ? 0 : coro_readyhook;
1530 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1565 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1531 1566
1532 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1567 coro_enq (aTHX_ coro);
1533 ++coro_nready; 1568 ++coro_nready;
1534 1569
1535 UNLOCK;
1536
1537 if (sv_hook) 1570 if (sv_hook)
1538 { 1571 {
1539 dSP; 1572 dSP;
1540 1573
1541 ENTER; 1574 ENTER;
1542 SAVETMPS; 1575 SAVETMPS;
1543 1576
1544 PUSHMARK (SP); 1577 PUSHMARK (SP);
1545 PUTBACK; 1578 PUTBACK;
1546 call_sv (sv_hook, G_DISCARD); 1579 call_sv (sv_hook, G_VOID | G_DISCARD);
1547 SPAGAIN;
1548 1580
1549 FREETMPS; 1581 FREETMPS;
1550 LEAVE; 1582 LEAVE;
1551 } 1583 }
1552 1584
… …
1555 1587
1556 return 1; 1588 return 1;
1557} 1589}
1558 1590
1559static int 1591static int
1560api_is_ready (SV *coro_sv) 1592api_is_ready (pTHX_ SV *coro_sv)
1561{ 1593{
1562 dTHX;
1563 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1594 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1564} 1595}
1565 1596
1566static void 1597INLINE void
1567prepare_schedule (pTHX_ struct transfer_args *ta) 1598prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1568{ 1599{
1569 SV *prev_sv, *next_sv; 1600 SV *prev_sv, *next_sv;
1570 1601
1571 for (;;) 1602 for (;;)
1572 { 1603 {
1573 LOCK;
1574 next_sv = coro_deq (aTHX); 1604 next_sv = coro_deq (aTHX);
1575 1605
1576 /* nothing to schedule: call the idle handler */ 1606 /* nothing to schedule: call the idle handler */
1577 if (expect_false (!next_sv)) 1607 if (expect_false (!next_sv))
1578 { 1608 {
1579 dSP; 1609 dSP;
1580 UNLOCK;
1581 1610
1582 ENTER; 1611 ENTER;
1583 SAVETMPS; 1612 SAVETMPS;
1584 1613
1585 PUSHMARK (SP); 1614 PUSHMARK (SP);
1586 PUTBACK; 1615 PUTBACK;
1587 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1616 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1588 SPAGAIN;
1589 1617
1590 FREETMPS; 1618 FREETMPS;
1591 LEAVE; 1619 LEAVE;
1592 continue; 1620 continue;
1593 } 1621 }
1594 1622
1595 ta->next = SvSTATE (next_sv); 1623 ta->next = SvSTATE_hv (next_sv);
1596 1624
1597 /* cannot transfer to destroyed coros, skip and look for next */ 1625 /* cannot transfer to destroyed coros, skip and look for next */
1598 if (expect_false (ta->next->flags & CF_DESTROYED)) 1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1599 { 1627 {
1600 UNLOCK;
1601 SvREFCNT_dec (next_sv); 1628 SvREFCNT_dec (next_sv);
1602 /* coro_nready has already been taken care of by destroy */ 1629 /* coro_nready has already been taken care of by destroy */
1603 continue; 1630 continue;
1604 } 1631 }
1605 1632
1606 --coro_nready; 1633 --coro_nready;
1607 UNLOCK;
1608 break; 1634 break;
1609 } 1635 }
1610 1636
1611 /* free this only after the transfer */ 1637 /* free this only after the transfer */
1612 prev_sv = SvRV (coro_current); 1638 prev_sv = SvRV (coro_current);
1613 ta->prev = SvSTATE (prev_sv); 1639 ta->prev = SvSTATE_hv (prev_sv);
1614 TRANSFER_CHECK (*ta); 1640 TRANSFER_CHECK (*ta);
1615 assert (ta->next->flags & CF_READY); 1641 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1616 ta->next->flags &= ~CF_READY; 1642 ta->next->flags &= ~CF_READY;
1617 SvRV_set (coro_current, next_sv); 1643 SvRV_set (coro_current, next_sv);
1618 1644
1619 LOCK;
1620 free_coro_mortal (aTHX); 1645 free_coro_mortal (aTHX);
1621 coro_mortal = prev_sv; 1646 coro_mortal = prev_sv;
1622 UNLOCK;
1623} 1647}
1624 1648
1625static void 1649INLINE void
1626prepare_cede (pTHX_ struct transfer_args *ta) 1650prepare_cede (pTHX_ struct coro_transfer_args *ta)
1627{ 1651{
1628 api_ready (coro_current); 1652 api_ready (aTHX_ coro_current);
1629 prepare_schedule (aTHX_ ta); 1653 prepare_schedule (aTHX_ ta);
1630} 1654}
1631 1655
1656INLINE void
1657prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1658{
1659 SV *prev = SvRV (coro_current);
1660
1661 if (coro_nready)
1662 {
1663 prepare_schedule (aTHX_ ta);
1664 api_ready (aTHX_ prev);
1665 }
1666 else
1667 prepare_nop (aTHX_ ta);
1668}
1669
1670static void
1671api_schedule (pTHX)
1672{
1673 struct coro_transfer_args ta;
1674
1675 prepare_schedule (aTHX_ &ta);
1676 TRANSFER (ta, 1);
1677}
1678
1632static int 1679static int
1633prepare_cede_notself (pTHX_ struct transfer_args *ta) 1680api_cede (pTHX)
1634{ 1681{
1635 if (coro_nready) 1682 struct coro_transfer_args ta;
1636 { 1683
1637 SV *prev = SvRV (coro_current);
1638 prepare_schedule (aTHX_ ta); 1684 prepare_cede (aTHX_ &ta);
1639 api_ready (prev); 1685
1686 if (expect_true (ta.prev != ta.next))
1687 {
1688 TRANSFER (ta, 1);
1640 return 1; 1689 return 1;
1641 } 1690 }
1642 else 1691 else
1643 return 0; 1692 return 0;
1644} 1693}
1645 1694
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 1695static int
1657api_cede (void) 1696api_cede_notself (pTHX)
1658{ 1697{
1659 dTHX; 1698 if (coro_nready)
1699 {
1660 struct transfer_args ta; 1700 struct coro_transfer_args ta;
1661 1701
1662 prepare_cede (aTHX_ &ta); 1702 prepare_cede_notself (aTHX_ &ta);
1663
1664 if (expect_true (ta.prev != ta.next))
1665 {
1666 TRANSFER (ta, 1); 1703 TRANSFER (ta, 1);
1667 return 1; 1704 return 1;
1668 } 1705 }
1669 else 1706 else
1670 return 0; 1707 return 0;
1671} 1708}
1672 1709
1673static int 1710static 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) 1711api_trace (pTHX_ SV *coro_sv, int flags)
1690{ 1712{
1691 dTHX;
1692 struct coro *coro = SvSTATE (coro_sv); 1713 struct coro *coro = SvSTATE (coro_sv);
1693 1714
1694 if (flags & CC_TRACE) 1715 if (flags & CC_TRACE)
1695 { 1716 {
1696 if (!coro->cctx) 1717 if (!coro->cctx)
1697 coro->cctx = cctx_new_run (); 1718 coro->cctx = cctx_new_run ();
1698 else if (!(coro->cctx->flags & CC_TRACE)) 1719 else if (!(coro->cctx->flags & CC_TRACE))
1699 croak ("cannot enable tracing on coroutine with custom stack"); 1720 croak ("cannot enable tracing on coroutine with custom stack,");
1700 1721
1701 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1722 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1702 } 1723 }
1703 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1724 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1704 { 1725 {
… …
1709 else 1730 else
1710 coro->slot->runops = RUNOPS_DEFAULT; 1731 coro->slot->runops = RUNOPS_DEFAULT;
1711 } 1732 }
1712} 1733}
1713 1734
1714#if 0 1735/*****************************************************************************/
1736/* rouse callback */
1737
1738#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1739
1740static void
1741coro_rouse_callback (pTHX_ CV *cv)
1742{
1743 dXSARGS;
1744 SV *data = (SV *)GENSUB_ARG;
1745
1746 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1747 {
1748 /* first call, set args */
1749 int i;
1750 AV *av = newAV ();
1751 SV *coro = SvRV (data);
1752
1753 SvRV_set (data, (SV *)av);
1754 api_ready (aTHX_ coro);
1755 SvREFCNT_dec (coro);
1756
1757 while (items--)
1758 av_store (av, items, SvREFCNT_inc_NN (ST (items)));
1759 }
1760
1761 XSRETURN_EMPTY;
1762}
1763
1715static int 1764static int
1716coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1765slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1717{ 1766{
1718 AV *padlist; 1767 SV *data = (SV *)frame->data;
1719 AV *av = (AV *)mg->mg_obj; 1768
1769 if (CORO_THROW)
1770 return 0;
1720 1771
1721 abort (); 1772 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1773 return 1;
1774
1775 /* now push all results on the stack */
1776 {
1777 dSP;
1778 AV *av = (AV *)SvRV (data);
1779 int i;
1780
1781 EXTEND (SP, AvFILLp (av) + 1);
1782 for (i = 0; i <= AvFILLp (av); ++i)
1783 PUSHs (AvARRAY (av)[i]);
1784
1785 PUTBACK;
1786 }
1722 1787
1723 return 0; 1788 return 0;
1724} 1789}
1725 1790
1726static MGVTBL coro_gensub_vtbl = { 1791static void
1727 0, 0, 0, 0, 1792slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1728 coro_gensub_free 1793{
1729}; 1794 SV *cb;
1730#endif 1795
1796 if (items)
1797 cb = arg [0];
1798 else
1799 {
1800 struct coro *coro = SvSTATE_current;
1801
1802 if (!coro->rouse_cb)
1803 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1804
1805 cb = sv_2mortal (coro->rouse_cb);
1806 coro->rouse_cb = 0;
1807 }
1808
1809 if (!SvROK (cb)
1810 || SvTYPE (SvRV (cb)) != SVt_PVCV
1811 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1812 croak ("Coro::rouse_wait called with illegal callback argument,");
1813
1814 {
1815 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1816 SV *data = (SV *)GENSUB_ARG;
1817
1818 frame->data = (void *)data;
1819 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1820 frame->check = slf_check_rouse_wait;
1821 }
1822}
1823
1824static SV *
1825coro_new_rouse_cb (pTHX)
1826{
1827 HV *hv = (HV *)SvRV (coro_current);
1828 struct coro *coro = SvSTATE_hv (hv);
1829 SV *data = newRV_inc ((SV *)hv);
1830 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1831
1832 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1833
1834 SvREFCNT_dec (coro->rouse_cb);
1835 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1836
1837 return cb;
1838}
1839
1840/*****************************************************************************/
1841/* schedule-like-function opcode (SLF) */
1842
1843static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1844static const CV *slf_cv;
1845static SV **slf_argv;
1846static int slf_argc, slf_arga; /* count, allocated */
1847static I32 slf_ax; /* top of stack, for restore */
1848
1849/* this restores the stack in the case we patched the entersub, to */
1850/* recreate the stack frame as perl will on following calls */
1851/* since entersub cleared the stack */
1852static OP *
1853pp_restore (pTHX)
1854{
1855 int i;
1856 SV **SP = PL_stack_base + slf_ax;
1857
1858 PUSHMARK (SP);
1859
1860 EXTEND (SP, slf_argc + 1);
1861
1862 for (i = 0; i < slf_argc; ++i)
1863 PUSHs (sv_2mortal (slf_argv [i]));
1864
1865 PUSHs ((SV *)CvGV (slf_cv));
1866
1867 RETURNOP (slf_restore.op_first);
1868}
1869
1870static void
1871slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1872{
1873 SV **arg = (SV **)slf_frame.data;
1874
1875 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1876}
1877
1878static void
1879slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1880{
1881 if (items != 2)
1882 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1883
1884 frame->prepare = slf_prepare_transfer;
1885 frame->check = slf_check_nop;
1886 frame->data = (void *)arg; /* let's hope it will stay valid */
1887}
1888
1889static void
1890slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1891{
1892 frame->prepare = prepare_schedule;
1893 frame->check = slf_check_nop;
1894}
1895
1896static void
1897slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1898{
1899 frame->prepare = prepare_cede;
1900 frame->check = slf_check_nop;
1901}
1902
1903static void
1904slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1905{
1906 frame->prepare = prepare_cede_notself;
1907 frame->check = slf_check_nop;
1908}
1909
1910/*
1911 * these not obviously related functions are all rolled into one
1912 * function to increase chances that they all will call transfer with the same
1913 * stack offset
1914 * SLF stands for "schedule-like-function".
1915 */
1916static OP *
1917pp_slf (pTHX)
1918{
1919 I32 checkmark; /* mark SP to see how many elements check has pushed */
1920
1921 /* set up the slf frame, unless it has already been set-up */
1922 /* the latter happens when a new coro has been started */
1923 /* or when a new cctx was attached to an existing coroutine */
1924 if (expect_true (!slf_frame.prepare))
1925 {
1926 /* first iteration */
1927 dSP;
1928 SV **arg = PL_stack_base + TOPMARK + 1;
1929 int items = SP - arg; /* args without function object */
1930 SV *gv = *sp;
1931
1932 /* do a quick consistency check on the "function" object, and if it isn't */
1933 /* for us, divert to the real entersub */
1934 if (SvTYPE (gv) != SVt_PVGV
1935 || !GvCV (gv)
1936 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1937 return PL_ppaddr[OP_ENTERSUB](aTHX);
1938
1939 if (!(PL_op->op_flags & OPf_STACKED))
1940 {
1941 /* ampersand-form of call, use @_ instead of stack */
1942 AV *av = GvAV (PL_defgv);
1943 arg = AvARRAY (av);
1944 items = AvFILLp (av) + 1;
1945 }
1946
1947 /* now call the init function, which needs to set up slf_frame */
1948 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1949 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1950
1951 /* pop args */
1952 SP = PL_stack_base + POPMARK;
1953
1954 PUTBACK;
1955 }
1956
1957 /* now that we have a slf_frame, interpret it! */
1958 /* we use a callback system not to make the code needlessly */
1959 /* complicated, but so we can run multiple perl coros from one cctx */
1960
1961 do
1962 {
1963 struct coro_transfer_args ta;
1964
1965 slf_frame.prepare (aTHX_ &ta);
1966 TRANSFER (ta, 0);
1967
1968 checkmark = PL_stack_sp - PL_stack_base;
1969 }
1970 while (slf_frame.check (aTHX_ &slf_frame));
1971
1972 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1973
1974 /* exception handling */
1975 if (expect_false (CORO_THROW))
1976 {
1977 SV *exception = sv_2mortal (CORO_THROW);
1978
1979 CORO_THROW = 0;
1980 sv_setsv (ERRSV, exception);
1981 croak (0);
1982 }
1983
1984 /* return value handling - mostly like entersub */
1985 /* make sure we put something on the stack in scalar context */
1986 if (GIMME_V == G_SCALAR)
1987 {
1988 dSP;
1989 SV **bot = PL_stack_base + checkmark;
1990
1991 if (sp == bot) /* too few, push undef */
1992 bot [1] = &PL_sv_undef;
1993 else if (sp != bot + 1) /* too many, take last one */
1994 bot [1] = *sp;
1995
1996 SP = bot + 1;
1997
1998 PUTBACK;
1999 }
2000
2001 return NORMAL;
2002}
2003
2004static void
2005api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2006{
2007 int i;
2008 SV **arg = PL_stack_base + ax;
2009 int items = PL_stack_sp - arg + 1;
2010
2011 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2012
2013 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2014 && PL_op->op_ppaddr != pp_slf)
2015 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2016
2017 CvFLAGS (cv) |= CVf_SLF;
2018 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2019 slf_cv = cv;
2020
2021 /* we patch the op, and then re-run the whole call */
2022 /* we have to put the same argument on the stack for this to work */
2023 /* and this will be done by pp_restore */
2024 slf_restore.op_next = (OP *)&slf_restore;
2025 slf_restore.op_type = OP_CUSTOM;
2026 slf_restore.op_ppaddr = pp_restore;
2027 slf_restore.op_first = PL_op;
2028
2029 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2030
2031 if (PL_op->op_flags & OPf_STACKED)
2032 {
2033 if (items > slf_arga)
2034 {
2035 slf_arga = items;
2036 free (slf_argv);
2037 slf_argv = malloc (slf_arga * sizeof (SV *));
2038 }
2039
2040 slf_argc = items;
2041
2042 for (i = 0; i < items; ++i)
2043 slf_argv [i] = SvREFCNT_inc (arg [i]);
2044 }
2045 else
2046 slf_argc = 0;
2047
2048 PL_op->op_ppaddr = pp_slf;
2049 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2050
2051 PL_op = (OP *)&slf_restore;
2052}
1731 2053
1732/*****************************************************************************/ 2054/*****************************************************************************/
1733/* PerlIO::cede */ 2055/* PerlIO::cede */
1734 2056
1735typedef struct 2057typedef struct
… …
1763 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2085 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1764 double now = nvtime (); 2086 double now = nvtime ();
1765 2087
1766 if (now >= self->next) 2088 if (now >= self->next)
1767 { 2089 {
1768 api_cede (); 2090 api_cede (aTHX);
1769 self->next = now + self->every; 2091 self->next = now + self->every;
1770 } 2092 }
1771 2093
1772 return PerlIOBuf_flush (aTHX_ f); 2094 return PerlIOBuf_flush (aTHX_ f);
1773} 2095}
… …
1802 PerlIOBuf_get_ptr, 2124 PerlIOBuf_get_ptr,
1803 PerlIOBuf_get_cnt, 2125 PerlIOBuf_get_cnt,
1804 PerlIOBuf_set_ptrcnt, 2126 PerlIOBuf_set_ptrcnt,
1805}; 2127};
1806 2128
2129/*****************************************************************************/
2130/* Coro::Semaphore & Coro::Signal */
2131
2132static SV *
2133coro_waitarray_new (pTHX_ int count)
2134{
2135 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2136 AV *av = newAV ();
2137 SV **ary;
2138
2139 /* unfortunately, building manually saves memory */
2140 Newx (ary, 2, SV *);
2141 AvALLOC (av) = ary;
2142 AvARRAY (av) = ary;
2143 AvMAX (av) = 1;
2144 AvFILLp (av) = 0;
2145 ary [0] = newSViv (count);
2146
2147 return newRV_noinc ((SV *)av);
2148}
2149
2150/* semaphore */
2151
2152static void
2153coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2154{
2155 SV *count_sv = AvARRAY (av)[0];
2156 IV count = SvIVX (count_sv);
2157
2158 count += adjust;
2159 SvIVX (count_sv) = count;
2160
2161 /* now wake up as many waiters as are expected to lock */
2162 while (count > 0 && AvFILLp (av) > 0)
2163 {
2164 SV *cb;
2165
2166 /* swap first two elements so we can shift a waiter */
2167 AvARRAY (av)[0] = AvARRAY (av)[1];
2168 AvARRAY (av)[1] = count_sv;
2169 cb = av_shift (av);
2170
2171 if (SvOBJECT (cb))
2172 api_ready (aTHX_ cb);
2173 else
2174 croak ("callbacks not yet supported");
2175
2176 SvREFCNT_dec (cb);
2177
2178 --count;
2179 }
2180}
2181
2182static void
2183coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2184{
2185 /* call $sem->adjust (0) to possibly wake up some other waiters */
2186 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2187}
2188
2189static int
2190slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2191{
2192 AV *av = (AV *)frame->data;
2193 SV *count_sv = AvARRAY (av)[0];
2194
2195 /* if we are about to throw, don't actually acquire the lock, just throw */
2196 if (CORO_THROW)
2197 return 0;
2198 else if (SvIVX (count_sv) > 0)
2199 {
2200 SvSTATE_current->on_destroy = 0;
2201
2202 if (acquire)
2203 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2204 else
2205 coro_semaphore_adjust (aTHX_ av, 0);
2206
2207 return 0;
2208 }
2209 else
2210 {
2211 int i;
2212 /* if we were woken up but can't down, we look through the whole */
2213 /* waiters list and only add us if we aren't in there already */
2214 /* this avoids some degenerate memory usage cases */
2215
2216 for (i = 1; i <= AvFILLp (av); ++i)
2217 if (AvARRAY (av)[i] == SvRV (coro_current))
2218 return 1;
2219
2220 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2221 return 1;
2222 }
2223}
2224
2225static int
2226slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2227{
2228 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2229}
2230
2231static int
2232slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2233{
2234 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2235}
2236
2237static void
2238slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2239{
2240 AV *av = (AV *)SvRV (arg [0]);
2241
2242 if (SvIVX (AvARRAY (av)[0]) > 0)
2243 {
2244 frame->data = (void *)av;
2245 frame->prepare = prepare_nop;
2246 }
2247 else
2248 {
2249 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2250
2251 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2252 frame->prepare = prepare_schedule;
2253
2254 /* to avoid race conditions when a woken-up coro gets terminated */
2255 /* we arrange for a temporary on_destroy that calls adjust (0) */
2256 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2257 }
2258}
2259
2260static void
2261slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2262{
2263 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2264 frame->check = slf_check_semaphore_down;
2265}
2266
2267static void
2268slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2269{
2270 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2271 frame->check = slf_check_semaphore_wait;
2272}
2273
2274/* signal */
2275
2276static void
2277coro_signal_wake (pTHX_ AV *av, int count)
2278{
2279 SvIVX (AvARRAY (av)[0]) = 0;
2280
2281 /* now signal count waiters */
2282 while (count > 0 && AvFILLp (av) > 0)
2283 {
2284 SV *cb;
2285
2286 /* swap first two elements so we can shift a waiter */
2287 cb = AvARRAY (av)[0];
2288 AvARRAY (av)[0] = AvARRAY (av)[1];
2289 AvARRAY (av)[1] = cb;
2290
2291 cb = av_shift (av);
2292
2293 api_ready (aTHX_ cb);
2294 sv_setiv (cb, 0); /* signal waiter */
2295 SvREFCNT_dec (cb);
2296
2297 --count;
2298 }
2299}
2300
2301static int
2302slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2303{
2304 /* if we are about to throw, also stop waiting */
2305 return SvROK ((SV *)frame->data) && !CORO_THROW;
2306}
2307
2308static void
2309slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2310{
2311 AV *av = (AV *)SvRV (arg [0]);
2312
2313 if (SvIVX (AvARRAY (av)[0]))
2314 {
2315 SvIVX (AvARRAY (av)[0]) = 0;
2316 frame->prepare = prepare_nop;
2317 frame->check = slf_check_nop;
2318 }
2319 else
2320 {
2321 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2322
2323 av_push (av, waiter);
2324
2325 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2326 frame->prepare = prepare_schedule;
2327 frame->check = slf_check_signal_wait;
2328 }
2329}
2330
2331/*****************************************************************************/
2332/* Coro::AIO */
2333
2334#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2335
2336/* helper storage struct */
2337struct io_state
2338{
2339 int errorno;
2340 I32 laststype; /* U16 in 5.10.0 */
2341 int laststatval;
2342 Stat_t statcache;
2343};
2344
2345static void
2346coro_aio_callback (pTHX_ CV *cv)
2347{
2348 dXSARGS;
2349 AV *state = (AV *)GENSUB_ARG;
2350 SV *coro = av_pop (state);
2351 SV *data_sv = newSV (sizeof (struct io_state));
2352
2353 av_extend (state, items);
2354
2355 sv_upgrade (data_sv, SVt_PV);
2356 SvCUR_set (data_sv, sizeof (struct io_state));
2357 SvPOK_only (data_sv);
2358
2359 {
2360 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2361
2362 data->errorno = errno;
2363 data->laststype = PL_laststype;
2364 data->laststatval = PL_laststatval;
2365 data->statcache = PL_statcache;
2366 }
2367
2368 /* now build the result vector out of all the parameters and the data_sv */
2369 {
2370 int i;
2371
2372 for (i = 0; i < items; ++i)
2373 av_push (state, SvREFCNT_inc_NN (ST (i)));
2374 }
2375
2376 av_push (state, data_sv);
2377
2378 api_ready (aTHX_ coro);
2379 SvREFCNT_dec (coro);
2380 SvREFCNT_dec ((AV *)state);
2381}
2382
2383static int
2384slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2385{
2386 AV *state = (AV *)frame->data;
2387
2388 /* if we are about to throw, return early */
2389 /* this does not cancel the aio request, but at least */
2390 /* it quickly returns */
2391 if (CORO_THROW)
2392 return 0;
2393
2394 /* one element that is an RV? repeat! */
2395 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2396 return 1;
2397
2398 /* restore status */
2399 {
2400 SV *data_sv = av_pop (state);
2401 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2402
2403 errno = data->errorno;
2404 PL_laststype = data->laststype;
2405 PL_laststatval = data->laststatval;
2406 PL_statcache = data->statcache;
2407
2408 SvREFCNT_dec (data_sv);
2409 }
2410
2411 /* push result values */
2412 {
2413 dSP;
2414 int i;
2415
2416 EXTEND (SP, AvFILLp (state) + 1);
2417 for (i = 0; i <= AvFILLp (state); ++i)
2418 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2419
2420 PUTBACK;
2421 }
2422
2423 return 0;
2424}
2425
2426static void
2427slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2428{
2429 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2430 SV *coro_hv = SvRV (coro_current);
2431 struct coro *coro = SvSTATE_hv (coro_hv);
2432
2433 /* put our coroutine id on the state arg */
2434 av_push (state, SvREFCNT_inc_NN (coro_hv));
2435
2436 /* first see whether we have a non-zero priority and set it as AIO prio */
2437 if (coro->prio)
2438 {
2439 dSP;
2440
2441 static SV *prio_cv;
2442 static SV *prio_sv;
2443
2444 if (expect_false (!prio_cv))
2445 {
2446 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2447 prio_sv = newSViv (0);
2448 }
2449
2450 PUSHMARK (SP);
2451 sv_setiv (prio_sv, coro->prio);
2452 XPUSHs (prio_sv);
2453
2454 PUTBACK;
2455 call_sv (prio_cv, G_VOID | G_DISCARD);
2456 }
2457
2458 /* now call the original request */
2459 {
2460 dSP;
2461 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2462 int i;
2463
2464 PUSHMARK (SP);
2465
2466 /* first push all args to the stack */
2467 EXTEND (SP, items + 1);
2468
2469 for (i = 0; i < items; ++i)
2470 PUSHs (arg [i]);
2471
2472 /* now push the callback closure */
2473 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2474
2475 /* now call the AIO function - we assume our request is uncancelable */
2476 PUTBACK;
2477 call_sv ((SV *)req, G_VOID | G_DISCARD);
2478 }
2479
2480 /* now that the requets is going, we loop toll we have a result */
2481 frame->data = (void *)state;
2482 frame->prepare = prepare_schedule;
2483 frame->check = slf_check_aio_req;
2484}
2485
2486static void
2487coro_aio_req_xs (pTHX_ CV *cv)
2488{
2489 dXSARGS;
2490
2491 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2492
2493 XSRETURN_EMPTY;
2494}
2495
2496/*****************************************************************************/
1807 2497
1808MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2498MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1809 2499
1810PROTOTYPES: DISABLE 2500PROTOTYPES: DISABLE
1811 2501
1812BOOT: 2502BOOT:
1813{ 2503{
1814#ifdef USE_ITHREADS 2504#ifdef USE_ITHREADS
1815 MUTEX_INIT (&coro_lock);
1816# if CORO_PTHREAD 2505# if CORO_PTHREAD
1817 coro_thx = PERL_GET_CONTEXT; 2506 coro_thx = PERL_GET_CONTEXT;
1818# endif 2507# endif
1819#endif 2508#endif
1820 BOOT_PAGESIZE; 2509 BOOT_PAGESIZE;
… …
1841 main_top_env = PL_top_env; 2530 main_top_env = PL_top_env;
1842 2531
1843 while (main_top_env->je_prev) 2532 while (main_top_env->je_prev)
1844 main_top_env = main_top_env->je_prev; 2533 main_top_env = main_top_env->je_prev;
1845 2534
2535 {
2536 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2537
2538 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2539 hv_store_ent (PL_custom_op_names, slf,
2540 newSVpv ("coro_slf", 0), 0);
2541
2542 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2543 hv_store_ent (PL_custom_op_descs, slf,
2544 newSVpv ("coro schedule like function", 0), 0);
2545 }
2546
1846 coroapi.ver = CORO_API_VERSION; 2547 coroapi.ver = CORO_API_VERSION;
1847 coroapi.rev = CORO_API_REVISION; 2548 coroapi.rev = CORO_API_REVISION;
2549
1848 coroapi.transfer = api_transfer; 2550 coroapi.transfer = api_transfer;
2551
2552 coroapi.sv_state = SvSTATE_;
2553 coroapi.execute_slf = api_execute_slf;
2554 coroapi.prepare_nop = prepare_nop;
2555 coroapi.prepare_schedule = prepare_schedule;
2556 coroapi.prepare_cede = prepare_cede;
2557 coroapi.prepare_cede_notself = prepare_cede_notself;
1849 2558
1850 { 2559 {
1851 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2560 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1852 2561
1853 if (!svp) croak ("Time::HiRes is required"); 2562 if (!svp) croak ("Time::HiRes is required");
… …
1886 av_push (coro->args, newSVsv (ST (i))); 2595 av_push (coro->args, newSVsv (ST (i)));
1887} 2596}
1888 OUTPUT: 2597 OUTPUT:
1889 RETVAL 2598 RETVAL
1890 2599
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 2600void
1895_set_stacklevel (...) 2601transfer (...)
1896 ALIAS: 2602 PROTOTYPE: $$
1897 Coro::State::transfer = 1 2603 CODE:
1898 Coro::schedule = 2 2604 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1899 Coro::cede = 3
1900 Coro::cede_notself = 4
1901 CODE:
1902{
1903 struct transfer_args ta;
1904
1905 PUTBACK;
1906 switch (ix)
1907 {
1908 case 0:
1909 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (ST (0)));
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 2605
1942bool 2606bool
1943_destroy (SV *coro_sv) 2607_destroy (SV *coro_sv)
1944 CODE: 2608 CODE:
1945 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2609 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1952 CODE: 2616 CODE:
1953 _exit (code); 2617 _exit (code);
1954 2618
1955int 2619int
1956cctx_stacksize (int new_stacksize = 0) 2620cctx_stacksize (int new_stacksize = 0)
2621 PROTOTYPE: ;$
1957 CODE: 2622 CODE:
1958 RETVAL = cctx_stacksize; 2623 RETVAL = cctx_stacksize;
1959 if (new_stacksize) 2624 if (new_stacksize)
1960 { 2625 {
1961 cctx_stacksize = new_stacksize; 2626 cctx_stacksize = new_stacksize;
… …
1964 OUTPUT: 2629 OUTPUT:
1965 RETVAL 2630 RETVAL
1966 2631
1967int 2632int
1968cctx_max_idle (int max_idle = 0) 2633cctx_max_idle (int max_idle = 0)
2634 PROTOTYPE: ;$
1969 CODE: 2635 CODE:
1970 RETVAL = cctx_max_idle; 2636 RETVAL = cctx_max_idle;
1971 if (max_idle > 1) 2637 if (max_idle > 1)
1972 cctx_max_idle = max_idle; 2638 cctx_max_idle = max_idle;
1973 OUTPUT: 2639 OUTPUT:
1974 RETVAL 2640 RETVAL
1975 2641
1976int 2642int
1977cctx_count () 2643cctx_count ()
2644 PROTOTYPE:
1978 CODE: 2645 CODE:
1979 RETVAL = cctx_count; 2646 RETVAL = cctx_count;
1980 OUTPUT: 2647 OUTPUT:
1981 RETVAL 2648 RETVAL
1982 2649
1983int 2650int
1984cctx_idle () 2651cctx_idle ()
2652 PROTOTYPE:
1985 CODE: 2653 CODE:
1986 RETVAL = cctx_idle; 2654 RETVAL = cctx_idle;
1987 OUTPUT: 2655 OUTPUT:
1988 RETVAL 2656 RETVAL
1989 2657
1990void 2658void
1991list () 2659list ()
2660 PROTOTYPE:
1992 PPCODE: 2661 PPCODE:
1993{ 2662{
1994 struct coro *coro; 2663 struct coro *coro;
1995 for (coro = coro_first; coro; coro = coro->next) 2664 for (coro = coro_first; coro; coro = coro->next)
1996 if (coro->hv) 2665 if (coro->hv)
… …
2058 2727
2059void 2728void
2060throw (Coro::State self, SV *throw = &PL_sv_undef) 2729throw (Coro::State self, SV *throw = &PL_sv_undef)
2061 PROTOTYPE: $;$ 2730 PROTOTYPE: $;$
2062 CODE: 2731 CODE:
2732{
2733 struct coro *current = SvSTATE_current;
2734 SV **throwp = self == current ? &CORO_THROW : &self->except;
2063 SvREFCNT_dec (self->throw); 2735 SvREFCNT_dec (*throwp);
2064 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 2736 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2737}
2065 2738
2066void 2739void
2067api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2740api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2741 PROTOTYPE: $;$
2742 C_ARGS: aTHX_ coro, flags
2068 2743
2069SV * 2744SV *
2070has_cctx (Coro::State coro) 2745has_cctx (Coro::State coro)
2071 PROTOTYPE: $ 2746 PROTOTYPE: $
2072 CODE: 2747 CODE:
… …
2096 OUTPUT: 2771 OUTPUT:
2097 RETVAL 2772 RETVAL
2098 2773
2099void 2774void
2100force_cctx () 2775force_cctx ()
2776 PROTOTYPE:
2101 CODE: 2777 CODE:
2102 struct coro *coro = SvSTATE (coro_current);
2103 coro->cctx->idle_sp = 0; 2778 SvSTATE_current->cctx->idle_sp = 0;
2104 2779
2105void 2780void
2106swap_defsv (Coro::State self) 2781swap_defsv (Coro::State self)
2107 PROTOTYPE: $ 2782 PROTOTYPE: $
2108 ALIAS: 2783 ALIAS:
2109 swap_defav = 1 2784 swap_defav = 1
2110 CODE: 2785 CODE:
2111 if (!self->slot) 2786 if (!self->slot)
2112 croak ("cannot swap state with coroutine that has no saved state"); 2787 croak ("cannot swap state with coroutine that has no saved state,");
2113 else 2788 else
2114 { 2789 {
2115 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2790 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2116 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2791 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2117 2792
2118 SV *tmp = *src; *src = *dst; *dst = tmp; 2793 SV *tmp = *src; *src = *dst; *dst = tmp;
2119 } 2794 }
2795
2120 2796
2121MODULE = Coro::State PACKAGE = Coro 2797MODULE = Coro::State PACKAGE = Coro
2122 2798
2123BOOT: 2799BOOT:
2124{ 2800{
… …
2142 2818
2143 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2819 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2144 coro_ready[i] = newAV (); 2820 coro_ready[i] = newAV ();
2145 2821
2146 { 2822 {
2147 SV *sv = perl_get_sv ("Coro::API", TRUE); 2823 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2148 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2149 2824
2150 coroapi.schedule = api_schedule; 2825 coroapi.schedule = api_schedule;
2151 coroapi.cede = api_cede; 2826 coroapi.cede = api_cede;
2152 coroapi.cede_notself = api_cede_notself; 2827 coroapi.cede_notself = api_cede_notself;
2153 coroapi.ready = api_ready; 2828 coroapi.ready = api_ready;
2154 coroapi.is_ready = api_is_ready; 2829 coroapi.is_ready = api_is_ready;
2155 coroapi.nready = &coro_nready; 2830 coroapi.nready = coro_nready;
2156 coroapi.current = coro_current; 2831 coroapi.current = coro_current;
2157 2832
2158 GCoroAPI = &coroapi; 2833 /*GCoroAPI = &coroapi;*/
2159 sv_setiv (sv, (IV)&coroapi); 2834 sv_setiv (sv, (IV)&coroapi);
2160 SvREADONLY_on (sv); 2835 SvREADONLY_on (sv);
2161 } 2836 }
2162} 2837}
2838
2839void
2840schedule (...)
2841 CODE:
2842 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2843
2844void
2845cede (...)
2846 CODE:
2847 CORO_EXECUTE_SLF_XS (slf_init_cede);
2848
2849void
2850cede_notself (...)
2851 CODE:
2852 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2163 2853
2164void 2854void
2165_set_current (SV *current) 2855_set_current (SV *current)
2166 PROTOTYPE: $ 2856 PROTOTYPE: $
2167 CODE: 2857 CODE:
… …
2170 2860
2171void 2861void
2172_set_readyhook (SV *hook) 2862_set_readyhook (SV *hook)
2173 PROTOTYPE: $ 2863 PROTOTYPE: $
2174 CODE: 2864 CODE:
2175 LOCK;
2176 SvREFCNT_dec (coro_readyhook); 2865 SvREFCNT_dec (coro_readyhook);
2177 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2866 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2178 UNLOCK;
2179 2867
2180int 2868int
2181prio (Coro::State coro, int newprio = 0) 2869prio (Coro::State coro, int newprio = 0)
2870 PROTOTYPE: $;$
2182 ALIAS: 2871 ALIAS:
2183 nice = 1 2872 nice = 1
2184 CODE: 2873 CODE:
2185{ 2874{
2186 RETVAL = coro->prio; 2875 RETVAL = coro->prio;
… …
2201 2890
2202SV * 2891SV *
2203ready (SV *self) 2892ready (SV *self)
2204 PROTOTYPE: $ 2893 PROTOTYPE: $
2205 CODE: 2894 CODE:
2206 RETVAL = boolSV (api_ready (self)); 2895 RETVAL = boolSV (api_ready (aTHX_ self));
2207 OUTPUT: 2896 OUTPUT:
2208 RETVAL 2897 RETVAL
2209 2898
2210int 2899int
2211nready (...) 2900nready (...)
… …
2218# for async_pool speedup 2907# for async_pool speedup
2219void 2908void
2220_pool_1 (SV *cb) 2909_pool_1 (SV *cb)
2221 CODE: 2910 CODE:
2222{ 2911{
2223 struct coro *coro = SvSTATE (coro_current);
2224 HV *hv = (HV *)SvRV (coro_current); 2912 HV *hv = (HV *)SvRV (coro_current);
2913 struct coro *coro = SvSTATE_hv ((SV *)hv);
2225 AV *defav = GvAV (PL_defgv); 2914 AV *defav = GvAV (PL_defgv);
2226 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2915 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2227 AV *invoke_av; 2916 AV *invoke_av;
2228 int i, len; 2917 int i, len;
2229 2918
… …
2250 { 2939 {
2251 av_fill (defav, len - 1); 2940 av_fill (defav, len - 1);
2252 for (i = 0; i < len; ++i) 2941 for (i = 0; i < len; ++i)
2253 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 2942 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2254 } 2943 }
2255
2256 SvREFCNT_dec (invoke);
2257} 2944}
2258 2945
2259void 2946void
2260_pool_2 (SV *cb) 2947_pool_2 (SV *cb)
2261 CODE: 2948 CODE:
2262{ 2949{
2263 struct coro *coro = SvSTATE (coro_current); 2950 HV *hv = (HV *)SvRV (coro_current);
2951 struct coro *coro = SvSTATE_hv ((SV *)hv);
2264 2952
2265 sv_setsv (cb, &PL_sv_undef); 2953 sv_setsv (cb, &PL_sv_undef);
2266 2954
2267 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2955 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2268 coro->saved_deffh = 0; 2956 coro->saved_deffh = 0;
… …
2275 SvREFCNT_dec (old); 2963 SvREFCNT_dec (old);
2276 croak ("\3async_pool terminate\2\n"); 2964 croak ("\3async_pool terminate\2\n");
2277 } 2965 }
2278 2966
2279 av_clear (GvAV (PL_defgv)); 2967 av_clear (GvAV (PL_defgv));
2280 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2968 hv_store (hv, "desc", sizeof ("desc") - 1,
2281 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2969 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2282 2970
2283 coro->prio = 0; 2971 coro->prio = 0;
2284 2972
2285 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2973 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2286 api_trace (coro_current, 0); 2974 api_trace (aTHX_ coro_current, 0);
2287 2975
2288 av_push (av_async_pool, newSVsv (coro_current)); 2976 av_push (av_async_pool, newSVsv (coro_current));
2289} 2977}
2290 2978
2291#if 0
2292
2293void
2294_generator_call (...)
2295 PROTOTYPE: @
2296 PPCODE:
2297 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2298 xxxx
2299 abort ();
2300
2301SV * 2979SV *
2302gensub (SV *sub, ...) 2980rouse_cb ()
2303 PROTOTYPE: &;@ 2981 PROTOTYPE:
2304 CODE: 2982 CODE:
2305{ 2983 RETVAL = coro_new_rouse_cb (aTHX);
2306 struct coro *coro;
2307 MAGIC *mg;
2308 CV *xcv;
2309 CV *ncv = (CV *)newSV_type (SVt_PVCV);
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}
2334 OUTPUT: 2984 OUTPUT:
2335 RETVAL 2985 RETVAL
2336 2986
2337#endif
2338
2339
2340MODULE = Coro::State PACKAGE = Coro::AIO
2341
2342void 2987void
2343_get_state (SV *self) 2988rouse_wait (SV *cb = 0)
2989 PROTOTYPE: ;$
2344 PPCODE: 2990 PPCODE:
2345{ 2991 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2346 AV *defav = GvAV (PL_defgv);
2347 AV *av = newAV ();
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 2992
2354 data->errorno = errno;
2355 data->laststype = PL_laststype;
2356 data->laststatval = PL_laststatval;
2357 data->statcache = PL_statcache;
2358 2993
2359 av_extend (av, AvFILLp (defav) + 1 + 1); 2994MODULE = Coro::State PACKAGE = PerlIO::cede
2360 2995
2361 for (i = 0; i <= AvFILLp (defav); ++i) 2996BOOT:
2362 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 2997 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2363 2998
2364 av_push (av, data_sv);
2365 2999
2366 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3000MODULE = Coro::State PACKAGE = Coro::Semaphore
2367 3001
2368 api_ready (self); 3002SV *
2369} 3003new (SV *klass, SV *count = 0)
3004 CODE:
3005 RETVAL = sv_bless (
3006 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3007 GvSTASH (CvGV (cv))
3008 );
3009 OUTPUT:
3010 RETVAL
3011
3012# helper for Coro::Channel
3013SV *
3014_alloc (int count)
3015 CODE:
3016 RETVAL = coro_waitarray_new (aTHX_ count);
3017 OUTPUT:
3018 RETVAL
3019
3020SV *
3021count (SV *self)
3022 CODE:
3023 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3024 OUTPUT:
3025 RETVAL
2370 3026
2371void 3027void
2372_set_state (SV *state) 3028up (SV *self, int adjust = 1)
2373 PROTOTYPE: $ 3029 ALIAS:
3030 adjust = 1
3031 CODE:
3032 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3033
3034void
3035down (SV *self)
3036 CODE:
3037 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3038
3039void
3040wait (SV *self)
3041 CODE:
3042 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3043
3044void
3045try (SV *self)
3046 PPCODE:
3047{
3048 AV *av = (AV *)SvRV (self);
3049 SV *count_sv = AvARRAY (av)[0];
3050 IV count = SvIVX (count_sv);
3051
3052 if (count > 0)
3053 {
3054 --count;
3055 SvIVX (count_sv) = count;
3056 XSRETURN_YES;
3057 }
3058 else
3059 XSRETURN_NO;
3060}
3061
3062void
3063waiters (SV *self)
3064 PPCODE:
3065{
3066 AV *av = (AV *)SvRV (self);
3067 int wcount = AvFILLp (av) + 1 - 1;
3068
3069 if (GIMME_V == G_SCALAR)
3070 XPUSHs (sv_2mortal (newSViv (wcount)));
3071 else
3072 {
3073 int i;
3074 EXTEND (SP, wcount);
3075 for (i = 1; i <= wcount; ++i)
3076 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3077 }
3078}
3079
3080MODULE = Coro::State PACKAGE = Coro::Signal
3081
3082SV *
3083new (SV *klass)
2374 PPCODE: 3084 CODE:
3085 RETVAL = sv_bless (
3086 coro_waitarray_new (aTHX_ 0),
3087 GvSTASH (CvGV (cv))
3088 );
3089 OUTPUT:
3090 RETVAL
3091
3092void
3093wait (SV *self)
3094 CODE:
3095 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3096
3097void
3098broadcast (SV *self)
3099 CODE:
2375{ 3100{
2376 AV *av = (AV *)SvRV (state); 3101 AV *av = (AV *)SvRV (self);
2377 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3102 coro_signal_wake (aTHX_ av, AvFILLp (av));
2378 int i; 3103}
2379 3104
2380 errno = data->errorno; 3105void
2381 PL_laststype = data->laststype; 3106send (SV *self)
2382 PL_laststatval = data->laststatval; 3107 CODE:
2383 PL_statcache = data->statcache; 3108{
3109 AV *av = (AV *)SvRV (self);
2384 3110
2385 EXTEND (SP, AvFILLp (av)); 3111 if (AvFILLp (av))
2386 for (i = 0; i < AvFILLp (av); ++i) 3112 coro_signal_wake (aTHX_ av, 1);
2387 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3113 else
3114 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2388} 3115}
3116
3117IV
3118awaited (SV *self)
3119 CODE:
3120 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3121 OUTPUT:
3122 RETVAL
2389 3123
2390 3124
2391MODULE = Coro::State PACKAGE = Coro::AnyEvent 3125MODULE = Coro::State PACKAGE = Coro::AnyEvent
2392 3126
2393BOOT: 3127BOOT:
2394 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3128 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2395 3129
2396SV * 3130void
2397_schedule (...) 3131_schedule (...)
2398 PROTOTYPE: @
2399 CODE: 3132 CODE:
2400{ 3133{
2401 static int incede; 3134 static int incede;
2402 3135
2403 api_cede_notself (); 3136 api_cede_notself (aTHX);
2404 3137
2405 ++incede; 3138 ++incede;
2406 while (coro_nready >= incede && api_cede ()) 3139 while (coro_nready >= incede && api_cede (aTHX))
2407 ; 3140 ;
2408 3141
2409 sv_setsv (sv_activity, &PL_sv_undef); 3142 sv_setsv (sv_activity, &PL_sv_undef);
2410 if (coro_nready >= incede) 3143 if (coro_nready >= incede)
2411 { 3144 {
2412 PUSHMARK (SP); 3145 PUSHMARK (SP);
2413 PUTBACK; 3146 PUTBACK;
2414 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3147 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2415 SPAGAIN;
2416 } 3148 }
2417 3149
2418 --incede; 3150 --incede;
2419} 3151}
2420 3152
2421 3153
2422MODULE = Coro::State PACKAGE = PerlIO::cede 3154MODULE = Coro::State PACKAGE = Coro::AIO
2423 3155
2424BOOT: 3156void
2425 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3157_register (char *target, char *proto, SV *req)
3158 CODE:
3159{
3160 HV *st;
3161 GV *gvp;
3162 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
3163 /* newXSproto doesn't return the CV on 5.8 */
3164 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3165 sv_setpv ((SV *)slf_cv, proto);
3166 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3167}
3168

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