ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.251 by root, Thu Oct 30 09:44:31 2008 UTC vs.
Revision 1.294 by root, Tue Nov 18 08:31:03 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 */
57#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
58 55
59#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
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"
145 150
146#ifdef USE_ITHREADS 151#ifdef USE_ITHREADS
147static perl_mutex coro_mutex; 152# if CORO_PTHREAD
148# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 153static void *coro_thx;
149# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
150#else
151# define LOCK (void)0
152# define UNLOCK (void)0
153#endif 154# endif
154 155#endif
155/* helper storage struct for Coro::AIO */
156struct io_state
157{
158 AV *res;
159 int errorno;
160 I32 laststype;
161 int laststatval;
162 Stat_t statcache;
163};
164 156
165static double (*nvtime)(); /* so why doesn't it take void? */ 157static double (*nvtime)(); /* so why doesn't it take void? */
166 158
159/* we hijack an hopefully unused CV flag for our purposes */
160#define CVf_SLF 0x4000
161static OP *pp_slf (pTHX);
162
163static U32 cctx_gen;
167static size_t coro_stacksize = CORO_STACKSIZE; 164static size_t cctx_stacksize = CORO_STACKSIZE;
168static struct CoroAPI coroapi; 165static struct CoroAPI coroapi;
169static AV *main_mainstack; /* used to differentiate between $main and others */ 166static AV *main_mainstack; /* used to differentiate between $main and others */
170static JMPENV *main_top_env; 167static JMPENV *main_top_env;
171static HV *coro_state_stash, *coro_stash; 168static HV *coro_state_stash, *coro_stash;
172static volatile SV *coro_mortal; /* will be freed after next transfer */ 169static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
173 170
174static GV *irsgv; /* $/ */ 171static GV *irsgv; /* $/ */
175static GV *stdoutgv; /* *STDOUT */ 172static GV *stdoutgv; /* *STDOUT */
176static SV *rv_diehook; 173static SV *rv_diehook;
177static SV *rv_warnhook; 174static SV *rv_warnhook;
… …
196 CC_TRACE_LINE = 0x10, /* trace each statement */ 193 CC_TRACE_LINE = 0x10, /* trace each statement */
197 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 194 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
198}; 195};
199 196
200/* this is a structure representing a c-level coroutine */ 197/* this is a structure representing a c-level coroutine */
201typedef struct coro_cctx { 198typedef struct coro_cctx
199{
202 struct coro_cctx *next; 200 struct coro_cctx *next;
203 201
204 /* the stack */ 202 /* the stack */
205 void *sptr; 203 void *sptr;
206 size_t ssize; 204 size_t ssize;
… …
209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 207 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 208 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
211 JMPENV *top_env; 209 JMPENV *top_env;
212 coro_context cctx; 210 coro_context cctx;
213 211
212 U32 gen;
214#if CORO_USE_VALGRIND 213#if CORO_USE_VALGRIND
215 int valgrind_id; 214 int valgrind_id;
216#endif 215#endif
217 unsigned char flags; 216 unsigned char flags;
218} coro_cctx; 217} coro_cctx;
… …
223 CF_NEW = 0x0004, /* has never been switched to */ 222 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 223 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
225}; 224};
226 225
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 226/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct { 227typedef struct
228{
229 SV *defsv; 229 SV *defsv;
230 AV *defav; 230 AV *defav;
231 SV *errsv; 231 SV *errsv;
232 SV *irsgv; 232 SV *irsgv;
233#define VAR(name,type) type name; 233#define VAR(name,type) type name;
… …
237 237
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
239 239
240/* this is a structure representing a perl-level coroutine */ 240/* this is a structure representing a perl-level coroutine */
241struct coro { 241struct coro {
242 /* the c coroutine allocated to this perl coroutine, if any */ 242 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx; 243 coro_cctx *cctx;
244 244
245 /* process data */ 245 /* state data */
246 struct CoroSLF slf_frame; /* saved slf frame */
246 AV *mainstack; 247 AV *mainstack;
247 perl_slots *slot; /* basically the saved sp */ 248 perl_slots *slot; /* basically the saved sp */
248 249
249 AV *args; /* data associated with this coroutine (initial args) */ 250 AV *args; /* data associated with this coroutine (initial args) */
250 int refcnt; /* coroutines are refcounted, yes */ 251 int refcnt; /* coroutines are refcounted, yes */
251 int flags; /* CF_ flags */ 252 int flags; /* CF_ flags */
252 HV *hv; /* the perl hash associated with this coro, if any */ 253 HV *hv; /* the perl hash associated with this coro, if any */
254 void (*on_destroy)(pTHX_ struct coro *coro);
253 255
254 /* statistics */ 256 /* statistics */
255 int usecount; /* number of transfers to this coro */ 257 int usecount; /* number of transfers to this coro */
256 258
257 /* coro process data */ 259 /* coro process data */
… …
265 struct coro *next, *prev; 267 struct coro *next, *prev;
266}; 268};
267 269
268typedef struct coro *Coro__State; 270typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 271typedef struct coro *Coro__State_or_hashref;
272
273/* the following variables are effectively part of the perl context */
274/* and get copied between struct coro and these variables */
275/* the mainr easonw e don't support windows process emulation */
276static struct CoroSLF slf_frame; /* the current slf frame */
277static SV *coro_throw;
270 278
271/** Coro ********************************************************************/ 279/** Coro ********************************************************************/
272 280
273#define PRIO_MAX 3 281#define PRIO_MAX 3
274#define PRIO_HIGH 1 282#define PRIO_HIGH 1
… …
278#define PRIO_MIN -4 286#define PRIO_MIN -4
279 287
280/* for Coro.pm */ 288/* for Coro.pm */
281static SV *coro_current; 289static SV *coro_current;
282static SV *coro_readyhook; 290static SV *coro_readyhook;
283static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 291static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
284static int coro_nready;
285static struct coro *coro_first; 292static struct coro *coro_first;
293#define coro_nready coroapi.nready
286 294
287/** lowlevel stuff **********************************************************/ 295/** lowlevel stuff **********************************************************/
288 296
289static SV * 297static SV *
290coro_get_sv (pTHX_ const char *name, int create) 298coro_get_sv (pTHX_ const char *name, int create)
… …
375 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 383 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
376 384
377 return 0; 385 return 0;
378} 386}
379 387
380#define CORO_MAGIC_type_cv PERL_MAGIC_ext 388#define CORO_MAGIC_type_cv 26
381#define CORO_MAGIC_type_state PERL_MAGIC_ext 389#define CORO_MAGIC_type_state PERL_MAGIC_ext
382 390
383static MGVTBL coro_cv_vtbl = { 391static MGVTBL coro_cv_vtbl = {
384 0, 0, 0, 0, 392 0, 0, 0, 0,
385 coro_cv_free 393 coro_cv_free
386}; 394};
387 395
396#define CORO_MAGIC_NN(sv, type) \
397 (expect_true (SvMAGIC (sv)->mg_type == type) \
398 ? SvMAGIC (sv) \
399 : mg_find (sv, type))
400
388#define CORO_MAGIC(sv,type) \ 401#define CORO_MAGIC(sv, type) \
389 SvMAGIC (sv) \ 402 (expect_true (SvMAGIC (sv)) \
390 ? SvMAGIC (sv)->mg_type == type \ 403 ? CORO_MAGIC_NN (sv, type) \
391 ? SvMAGIC (sv) \
392 : mg_find (sv, type) \
393 : 0 404 : 0)
394 405
395#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 406#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
396#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 407#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
397 408
398static struct coro * 409INLINE struct coro *
399SvSTATE_ (pTHX_ SV *coro) 410SvSTATE_ (pTHX_ SV *coro)
400{ 411{
401 HV *stash; 412 HV *stash;
402 MAGIC *mg; 413 MAGIC *mg;
403 414
… …
418 mg = CORO_MAGIC_state (coro); 429 mg = CORO_MAGIC_state (coro);
419 return (struct coro *)mg->mg_ptr; 430 return (struct coro *)mg->mg_ptr;
420} 431}
421 432
422#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 433#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
434
435/* faster than SvSTATE, but expects a coroutine hv */
436#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
437#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
423 438
424/* the next two functions merely cache the padlists */ 439/* the next two functions merely cache the padlists */
425static void 440static void
426get_padlist (pTHX_ CV *cv) 441get_padlist (pTHX_ CV *cv)
427{ 442{
… …
494 CvPADLIST (cv) = (AV *)POPs; 509 CvPADLIST (cv) = (AV *)POPs;
495 } 510 }
496 511
497 PUTBACK; 512 PUTBACK;
498 } 513 }
514
515 slf_frame = c->slf_frame;
516 coro_throw = c->throw;
499} 517}
500 518
501static void 519static void
502save_perl (pTHX_ Coro__State c) 520save_perl (pTHX_ Coro__State c)
503{ 521{
522 c->throw = coro_throw;
523 c->slf_frame = slf_frame;
524
504 { 525 {
505 dSP; 526 dSP;
506 I32 cxix = cxstack_ix; 527 I32 cxix = cxstack_ix;
507 PERL_CONTEXT *ccstk = cxstack; 528 PERL_CONTEXT *ccstk = cxstack;
508 PERL_SI *top_si = PL_curstackinfo; 529 PERL_SI *top_si = PL_curstackinfo;
… …
575 #undef VAR 596 #undef VAR
576 } 597 }
577} 598}
578 599
579/* 600/*
580 * allocate various perl stacks. This is an exact copy 601 * allocate various perl stacks. This is almost an exact copy
581 * of perl.c:init_stacks, except that it uses less memory 602 * of perl.c:init_stacks, except that it uses less memory
582 * on the (sometimes correct) assumption that coroutines do 603 * on the (sometimes correct) assumption that coroutines do
583 * not usually need a lot of stackspace. 604 * not usually need a lot of stackspace.
584 */ 605 */
585#if CORO_PREFER_PERL_FUNCTIONS 606#if CORO_PREFER_PERL_FUNCTIONS
… …
628 649
629/* 650/*
630 * destroy the stacks, the callchain etc... 651 * destroy the stacks, the callchain etc...
631 */ 652 */
632static void 653static void
633coro_destroy_stacks (pTHX) 654coro_destruct_stacks (pTHX)
634{ 655{
635 while (PL_curstackinfo->si_next) 656 while (PL_curstackinfo->si_next)
636 PL_curstackinfo = PL_curstackinfo->si_next; 657 PL_curstackinfo = PL_curstackinfo->si_next;
637 658
638 while (PL_curstackinfo) 659 while (PL_curstackinfo)
… …
787 808
788 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 809 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
789} 810}
790 811
791static void 812static void
813prepare_nop (pTHX_ struct coro_transfer_args *ta)
814{
815 /* kind of mega-hacky, but works */
816 ta->next = ta->prev = (struct coro *)ta;
817}
818
819static int
820slf_check_nop (pTHX_ struct CoroSLF *frame)
821{
822 return 0;
823}
824
825static UNOP coro_setup_op;
826
827static void NOINLINE /* noinline to keep it out of the transfer fast path */
792coro_setup (pTHX_ struct coro *coro) 828coro_setup (pTHX_ struct coro *coro)
793{ 829{
794 /* 830 /*
795 * emulate part of the perl startup here. 831 * emulate part of the perl startup here.
796 */ 832 */
… …
820 PL_rs = newSVsv (GvSV (irsgv)); 856 PL_rs = newSVsv (GvSV (irsgv));
821 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
822 858
823 { 859 {
824 dSP; 860 dSP;
825 LOGOP myop; 861 UNOP myop;
826 862
827 Zero (&myop, 1, LOGOP); 863 Zero (&myop, 1, UNOP);
828 myop.op_next = Nullop; 864 myop.op_next = Nullop;
829 myop.op_flags = OPf_WANT_VOID; 865 myop.op_flags = OPf_WANT_VOID;
830 866
831 PUSHMARK (SP); 867 PUSHMARK (SP);
832 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
833 PUTBACK; 869 PUTBACK;
… …
835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
836 SPAGAIN; 872 SPAGAIN;
837 } 873 }
838 874
839 /* this newly created coroutine might be run on an existing cctx which most 875 /* this newly created coroutine might be run on an existing cctx which most
840 * likely was suspended in set_stacklevel, called from entersub. 876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
841 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
842 * so we ENTER here for symmetry
843 */ 877 */
844 ENTER; 878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
845} 879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
846 880
881 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882 coro_setup_op.op_next = PL_op;
883 coro_setup_op.op_type = OP_CUSTOM;
884 coro_setup_op.op_ppaddr = pp_slf;
885 /* no flags required, as an init function won't be called */
886
887 PL_op = (OP *)&coro_setup_op;
888
889 /* copy throw, in case it was set before coro_setup */
890 coro_throw = coro->throw;
891}
892
847static void 893static void
848coro_destroy (pTHX_ struct coro *coro) 894coro_destruct (pTHX_ struct coro *coro)
849{ 895{
850 if (!IN_DESTRUCT) 896 if (!IN_DESTRUCT)
851 { 897 {
852 /* restore all saved variables and stuff */ 898 /* restore all saved variables and stuff */
853 LEAVE_SCOPE (0); 899 LEAVE_SCOPE (0);
… …
873 919
874 SvREFCNT_dec (PL_diehook); 920 SvREFCNT_dec (PL_diehook);
875 SvREFCNT_dec (PL_warnhook); 921 SvREFCNT_dec (PL_warnhook);
876 922
877 SvREFCNT_dec (coro->saved_deffh); 923 SvREFCNT_dec (coro->saved_deffh);
878 SvREFCNT_dec (coro->throw); 924 SvREFCNT_dec (coro_throw);
879 925
880 coro_destroy_stacks (aTHX); 926 coro_destruct_stacks (aTHX);
881} 927}
882 928
883static void 929INLINE void
884free_coro_mortal (pTHX) 930free_coro_mortal (pTHX)
885{ 931{
886 if (expect_true (coro_mortal)) 932 if (expect_true (coro_mortal))
887 { 933 {
888 SvREFCNT_dec (coro_mortal); 934 SvREFCNT_dec (coro_mortal);
… …
893static int 939static int
894runops_trace (pTHX) 940runops_trace (pTHX)
895{ 941{
896 COP *oldcop = 0; 942 COP *oldcop = 0;
897 int oldcxix = -2; 943 int oldcxix = -2;
898 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 944 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
899 coro_cctx *cctx = coro->cctx; 945 coro_cctx *cctx = coro->cctx;
900 946
901 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
902 { 948 {
903 PERL_ASYNC_CHECK (); 949 PERL_ASYNC_CHECK ();
… …
1012 1058
1013 TAINT_NOT; 1059 TAINT_NOT;
1014 return 0; 1060 return 0;
1015} 1061}
1016 1062
1017/* inject a fake call to Coro::State::_cctx_init into the execution */ 1063static struct coro_cctx *cctx_ssl_cctx;
1018/* _cctx_init should be careful, as it could be called at almost any time */ 1064static struct CoroSLF cctx_ssl_frame;
1019/* during execution of a perl program */ 1065
1066static void
1067slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068{
1069 ta->prev = (struct coro *)cctx_ssl_cctx;
1070 ta->next = 0;
1071}
1072
1073static int
1074slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075{
1076 *frame = cctx_ssl_frame;
1077
1078 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079}
1080
1081/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1020static void NOINLINE 1082static void NOINLINE
1021cctx_prepare (pTHX_ coro_cctx *cctx) 1083cctx_prepare (pTHX_ coro_cctx *cctx)
1022{ 1084{
1023 dSP;
1024 LOGOP myop;
1025
1026 PL_top_env = &PL_start_env; 1085 PL_top_env = &PL_start_env;
1027 1086
1028 if (cctx->flags & CC_TRACE) 1087 if (cctx->flags & CC_TRACE)
1029 PL_runops = runops_trace; 1088 PL_runops = runops_trace;
1030 1089
1031 Zero (&myop, 1, LOGOP); 1090 /* we already must be executing an SLF op, there is no other valid way
1032 myop.op_next = PL_op; 1091 * that can lead to creation of a new cctx */
1033 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1092 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1034 1094
1035 PUSHMARK (SP); 1095 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1036 EXTEND (SP, 2); 1096 cctx_ssl_cctx = cctx;
1037 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1097 cctx_ssl_frame = slf_frame;
1038 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1098
1039 PUTBACK; 1099 slf_frame.prepare = slf_prepare_set_stacklevel;
1040 PL_op = (OP *)&myop; 1100 slf_frame.check = slf_check_set_stacklevel;
1041 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1101}
1042 SPAGAIN; 1102
1103/* the tail of transfer: execute stuff we can only do after a transfer */
1104INLINE void
1105transfer_tail (pTHX)
1106{
1107 free_coro_mortal (aTHX);
1043} 1108}
1044 1109
1045/* 1110/*
1046 * this is a _very_ stripped down perl interpreter ;) 1111 * this is a _very_ stripped down perl interpreter ;)
1047 */ 1112 */
1048static void 1113static void
1049cctx_run (void *arg) 1114cctx_run (void *arg)
1050{ 1115{
1116#ifdef USE_ITHREADS
1117# if CORO_PTHREAD
1118 PERL_SET_CONTEXT (coro_thx);
1119# endif
1120#endif
1121 {
1051 dTHX; 1122 dTHX;
1052 1123
1053 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1124 /* normally we would need to skip the entersub here */
1054 UNLOCK; 1125 /* not doing so will re-execute it, which is exactly what we want */
1055
1056 /* we now skip the entersub that lead to transfer() */
1057 PL_op = PL_op->op_next; 1126 /* PL_nop = PL_nop->op_next */
1058 1127
1059 /* inject a fake subroutine call to cctx_init */ 1128 /* inject a fake subroutine call to cctx_init */
1060 cctx_prepare (aTHX_ (coro_cctx *)arg); 1129 cctx_prepare (aTHX_ (coro_cctx *)arg);
1061 1130
1131 /* cctx_run is the alternative tail of transfer() */
1132 transfer_tail (aTHX);
1133
1062 /* somebody or something will hit me for both perl_run and PL_restartop */ 1134 /* somebody or something will hit me for both perl_run and PL_restartop */
1063 PL_restartop = PL_op; 1135 PL_restartop = PL_op;
1064 perl_run (PL_curinterp); 1136 perl_run (PL_curinterp);
1065 1137
1066 /* 1138 /*
1067 * If perl-run returns we assume exit() was being called or the coro 1139 * If perl-run returns we assume exit() was being called or the coro
1068 * fell off the end, which seems to be the only valid (non-bug) 1140 * fell off the end, which seems to be the only valid (non-bug)
1069 * reason for perl_run to return. We try to exit by jumping to the 1141 * reason for perl_run to return. We try to exit by jumping to the
1070 * bootstrap-time "top" top_env, as we cannot restore the "main" 1142 * bootstrap-time "top" top_env, as we cannot restore the "main"
1071 * coroutine as Coro has no such concept 1143 * coroutine as Coro has no such concept
1072 */ 1144 */
1073 PL_top_env = main_top_env; 1145 PL_top_env = main_top_env;
1074 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1146 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1147 }
1075} 1148}
1076 1149
1077static coro_cctx * 1150static coro_cctx *
1078cctx_new () 1151cctx_new ()
1079{ 1152{
1080 coro_cctx *cctx; 1153 coro_cctx *cctx;
1154
1155 ++cctx_count;
1156 New (0, cctx, 1, coro_cctx);
1157
1158 cctx->gen = cctx_gen;
1159 cctx->flags = 0;
1160 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1161
1162 return cctx;
1163}
1164
1165/* create a new cctx only suitable as source */
1166static coro_cctx *
1167cctx_new_empty ()
1168{
1169 coro_cctx *cctx = cctx_new ();
1170
1171 cctx->sptr = 0;
1172 coro_create (&cctx->cctx, 0, 0, 0, 0);
1173
1174 return cctx;
1175}
1176
1177/* create a new cctx suitable as destination/running a perl interpreter */
1178static coro_cctx *
1179cctx_new_run ()
1180{
1181 coro_cctx *cctx = cctx_new ();
1081 void *stack_start; 1182 void *stack_start;
1082 size_t stack_size; 1183 size_t stack_size;
1083 1184
1084 ++cctx_count;
1085
1086 Newz (0, cctx, 1, coro_cctx);
1087
1088#if HAVE_MMAP 1185#if HAVE_MMAP
1089 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1186 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1090 /* mmap supposedly does allocate-on-write for us */ 1187 /* mmap supposedly does allocate-on-write for us */
1091 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1188 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1092 1189
1093 if (cctx->sptr != (void *)-1) 1190 if (cctx->sptr != (void *)-1)
1094 { 1191 {
1095# if CORO_STACKGUARD 1192 #if CORO_STACKGUARD
1096 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1193 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1097# endif 1194 #endif
1098 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1195 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1099 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1196 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1100 cctx->flags |= CC_MAPPED; 1197 cctx->flags |= CC_MAPPED;
1101 } 1198 }
1102 else 1199 else
1103#endif 1200#endif
1104 { 1201 {
1105 cctx->ssize = coro_stacksize * (long)sizeof (long); 1202 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1106 New (0, cctx->sptr, coro_stacksize, long); 1203 New (0, cctx->sptr, cctx_stacksize, long);
1107 1204
1108 if (!cctx->sptr) 1205 if (!cctx->sptr)
1109 { 1206 {
1110 perror ("FATAL: unable to allocate stack for coroutine"); 1207 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1111 _exit (EXIT_FAILURE); 1208 _exit (EXIT_FAILURE);
1112 } 1209 }
1113 1210
1114 stack_start = cctx->sptr; 1211 stack_start = cctx->sptr;
1115 stack_size = cctx->ssize; 1212 stack_size = cctx->ssize;
1116 } 1213 }
1117 1214
1118 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1215 #if CORO_USE_VALGRIND
1216 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1217 #endif
1218
1119 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1219 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1120 1220
1121 return cctx; 1221 return cctx;
1122} 1222}
1123 1223
… …
1126{ 1226{
1127 if (!cctx) 1227 if (!cctx)
1128 return; 1228 return;
1129 1229
1130 --cctx_count; 1230 --cctx_count;
1231 coro_destroy (&cctx->cctx);
1131 1232
1233 /* coro_transfer creates new, empty cctx's */
1234 if (cctx->sptr)
1235 {
1132#if CORO_USE_VALGRIND 1236 #if CORO_USE_VALGRIND
1133 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1237 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1134#endif 1238 #endif
1135 1239
1136#if HAVE_MMAP 1240#if HAVE_MMAP
1137 if (cctx->flags & CC_MAPPED) 1241 if (cctx->flags & CC_MAPPED)
1138 munmap (cctx->sptr, cctx->ssize); 1242 munmap (cctx->sptr, cctx->ssize);
1139 else 1243 else
1140#endif 1244#endif
1141 Safefree (cctx->sptr); 1245 Safefree (cctx->sptr);
1246 }
1142 1247
1143 Safefree (cctx); 1248 Safefree (cctx);
1144} 1249}
1145 1250
1146/* wether this cctx should be destructed */ 1251/* wether this cctx should be destructed */
1147#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1252#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1148 1253
1149static coro_cctx * 1254static coro_cctx *
1150cctx_get (pTHX) 1255cctx_get (pTHX)
1151{ 1256{
1152 while (expect_true (cctx_first)) 1257 while (expect_true (cctx_first))
… …
1159 return cctx; 1264 return cctx;
1160 1265
1161 cctx_destroy (cctx); 1266 cctx_destroy (cctx);
1162 } 1267 }
1163 1268
1164 return cctx_new (); 1269 return cctx_new_run ();
1165} 1270}
1166 1271
1167static void 1272static void
1168cctx_put (coro_cctx *cctx) 1273cctx_put (coro_cctx *cctx)
1169{ 1274{
1275 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1276
1170 /* free another cctx if overlimit */ 1277 /* free another cctx if overlimit */
1171 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1278 if (expect_false (cctx_idle >= cctx_max_idle))
1172 { 1279 {
1173 coro_cctx *first = cctx_first; 1280 coro_cctx *first = cctx_first;
1174 cctx_first = first->next; 1281 cctx_first = first->next;
1175 --cctx_idle; 1282 --cctx_idle;
1176 1283
… …
1185/** coroutine switching *****************************************************/ 1292/** coroutine switching *****************************************************/
1186 1293
1187static void 1294static void
1188transfer_check (pTHX_ struct coro *prev, struct coro *next) 1295transfer_check (pTHX_ struct coro *prev, struct coro *next)
1189{ 1296{
1297 /* TODO: throwing up here is considered harmful */
1298
1190 if (expect_true (prev != next)) 1299 if (expect_true (prev != next))
1191 { 1300 {
1192 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1193 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1194 1303
1195 if (expect_false (next->flags & CF_RUNNING)) 1304 if (expect_false (next->flags & CF_RUNNING))
1196 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1197 1306
1198 if (expect_false (next->flags & CF_DESTROYED)) 1307 if (expect_false (next->flags & CF_DESTROYED))
1199 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1200 1309
1201#if !PERL_VERSION_ATLEAST (5,10,0) 1310#if !PERL_VERSION_ATLEAST (5,10,0)
1202 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1311 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1203 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1204#endif 1313#endif
1205 } 1314 }
1206} 1315}
1207 1316
1208/* always use the TRANSFER macro */ 1317/* always use the TRANSFER macro */
1209static void NOINLINE 1318static void NOINLINE /* noinline so we have a fixed stackframe */
1210transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1211{ 1320{
1212 dSTACKLEVEL; 1321 dSTACKLEVEL;
1213 static volatile int has_throw;
1214 1322
1215 /* sometimes transfer is only called to set idle_sp */ 1323 /* sometimes transfer is only called to set idle_sp */
1216 if (expect_false (!next)) 1324 if (expect_false (!next))
1217 { 1325 {
1218 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
… …
1222 { 1330 {
1223 coro_cctx *prev__cctx; 1331 coro_cctx *prev__cctx;
1224 1332
1225 if (expect_false (prev->flags & CF_NEW)) 1333 if (expect_false (prev->flags & CF_NEW))
1226 { 1334 {
1227 /* create a new empty context */ 1335 /* create a new empty/source context */
1228 Newz (0, prev->cctx, 1, coro_cctx); 1336 prev->cctx = cctx_new_empty ();
1229 prev->flags &= ~CF_NEW; 1337 prev->flags &= ~CF_NEW;
1230 prev->flags |= CF_RUNNING; 1338 prev->flags |= CF_RUNNING;
1231 } 1339 }
1232 1340
1233 prev->flags &= ~CF_RUNNING; 1341 prev->flags &= ~CF_RUNNING;
1234 next->flags |= CF_RUNNING; 1342 next->flags |= CF_RUNNING;
1235
1236 LOCK;
1237 1343
1238 /* first get rid of the old state */ 1344 /* first get rid of the old state */
1239 save_perl (aTHX_ prev); 1345 save_perl (aTHX_ prev);
1240 1346
1241 if (expect_false (next->flags & CF_NEW)) 1347 if (expect_false (next->flags & CF_NEW))
… …
1248 else 1354 else
1249 load_perl (aTHX_ next); 1355 load_perl (aTHX_ next);
1250 1356
1251 prev__cctx = prev->cctx; 1357 prev__cctx = prev->cctx;
1252 1358
1253 /* possibly "free" the cctx */ 1359 /* possibly untie and reuse the cctx */
1254 if (expect_true ( 1360 if (expect_true (
1255 prev__cctx->idle_sp == STACKLEVEL 1361 prev__cctx->idle_sp == STACKLEVEL
1256 && !(prev__cctx->flags & CC_TRACE) 1362 && !(prev__cctx->flags & CC_TRACE)
1257 && !force_cctx 1363 && !force_cctx
1258 )) 1364 ))
1259 { 1365 {
1260 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1366 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1261 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1367 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1262 1368
1263 prev->cctx = 0; 1369 prev->cctx = 0;
1264 1370
1265 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1371 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1266 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1372 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1273 1379
1274 ++next->usecount; 1380 ++next->usecount;
1275 1381
1276 if (expect_true (!next->cctx)) 1382 if (expect_true (!next->cctx))
1277 next->cctx = cctx_get (aTHX); 1383 next->cctx = cctx_get (aTHX);
1278
1279 has_throw = !!next->throw;
1280 1384
1281 if (expect_false (prev__cctx != next->cctx)) 1385 if (expect_false (prev__cctx != next->cctx))
1282 { 1386 {
1283 prev__cctx->top_env = PL_top_env; 1387 prev__cctx->top_env = PL_top_env;
1284 PL_top_env = next->cctx->top_env; 1388 PL_top_env = next->cctx->top_env;
1285 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1286 } 1390 }
1287 1391
1288 free_coro_mortal (aTHX); 1392 transfer_tail (aTHX);
1289 UNLOCK;
1290
1291 if (expect_false (has_throw))
1292 {
1293 struct coro *coro = SvSTATE (coro_current);
1294
1295 if (coro->throw)
1296 {
1297 SV *exception = coro->throw;
1298 coro->throw = 0;
1299 sv_setsv (ERRSV, exception);
1300 croak (0);
1301 }
1302 }
1303 } 1393 }
1304} 1394}
1305
1306struct transfer_args
1307{
1308 struct coro *prev, *next;
1309};
1310 1395
1311#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1312#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1313 1398
1314/** high level stuff ********************************************************/ 1399/** high level stuff ********************************************************/
… …
1316static int 1401static int
1317coro_state_destroy (pTHX_ struct coro *coro) 1402coro_state_destroy (pTHX_ struct coro *coro)
1318{ 1403{
1319 if (coro->flags & CF_DESTROYED) 1404 if (coro->flags & CF_DESTROYED)
1320 return 0; 1405 return 0;
1406
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro);
1321 1409
1322 coro->flags |= CF_DESTROYED; 1410 coro->flags |= CF_DESTROYED;
1323 1411
1324 if (coro->flags & CF_READY) 1412 if (coro->flags & CF_READY)
1325 { 1413 {
1326 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1414 /* reduce nready, as destroying a ready coro effectively unreadies it */
1327 /* alternative: look through all ready queues and remove the coro */ 1415 /* alternative: look through all ready queues and remove the coro */
1328 LOCK;
1329 --coro_nready; 1416 --coro_nready;
1330 UNLOCK;
1331 } 1417 }
1332 else 1418 else
1333 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1334 1420
1335 if (coro->mainstack && coro->mainstack != main_mainstack) 1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1336 { 1422 {
1337 struct coro temp; 1423 struct coro temp;
1338 1424
1339 if (coro->flags & CF_RUNNING) 1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1340 croak ("FATAL: tried to destroy currently running coroutine");
1341 1426
1342 save_perl (aTHX_ &temp); 1427 save_perl (aTHX_ &temp);
1343 load_perl (aTHX_ coro); 1428 load_perl (aTHX_ coro);
1344 1429
1345 coro_destroy (aTHX_ coro); 1430 coro_destruct (aTHX_ coro);
1346 1431
1347 load_perl (aTHX_ &temp); 1432 load_perl (aTHX_ &temp);
1348 1433
1349 coro->slot = 0; 1434 coro->slot = 0;
1350 } 1435 }
… …
1396# define MGf_DUP 0 1481# define MGf_DUP 0
1397#endif 1482#endif
1398}; 1483};
1399 1484
1400static void 1485static void
1401prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1486prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1402{ 1487{
1403 ta->prev = SvSTATE (prev_sv); 1488 ta->prev = SvSTATE (prev_sv);
1404 ta->next = SvSTATE (next_sv); 1489 ta->next = SvSTATE (next_sv);
1405 TRANSFER_CHECK (*ta); 1490 TRANSFER_CHECK (*ta);
1406} 1491}
1407 1492
1408static void 1493static void
1409api_transfer (SV *prev_sv, SV *next_sv) 1494api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1410{ 1495{
1411 dTHX;
1412 struct transfer_args ta; 1496 struct coro_transfer_args ta;
1413 1497
1414 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1415 TRANSFER (ta, 1); 1499 TRANSFER (ta, 1);
1416} 1500}
1417 1501
1418/** Coro ********************************************************************/ 1502/** Coro ********************************************************************/
1419 1503
1420static void 1504INLINE void
1421coro_enq (pTHX_ SV *coro_sv) 1505coro_enq (pTHX_ struct coro *coro)
1422{ 1506{
1423 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1424} 1508}
1425 1509
1426static SV * 1510INLINE SV *
1427coro_deq (pTHX) 1511coro_deq (pTHX)
1428{ 1512{
1429 int prio; 1513 int prio;
1430 1514
1431 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1434 1518
1435 return 0; 1519 return 0;
1436} 1520}
1437 1521
1438static int 1522static int
1439api_ready (SV *coro_sv) 1523api_ready (pTHX_ SV *coro_sv)
1440{ 1524{
1441 dTHX;
1442 struct coro *coro; 1525 struct coro *coro;
1443 SV *sv_hook; 1526 SV *sv_hook;
1444 void (*xs_hook)(void); 1527 void (*xs_hook)(void);
1445 1528
1446 if (SvROK (coro_sv)) 1529 if (SvROK (coro_sv))
… …
1451 if (coro->flags & CF_READY) 1534 if (coro->flags & CF_READY)
1452 return 0; 1535 return 0;
1453 1536
1454 coro->flags |= CF_READY; 1537 coro->flags |= CF_READY;
1455 1538
1456 LOCK;
1457
1458 sv_hook = coro_nready ? 0 : coro_readyhook; 1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1459 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1460 1541
1461 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1542 coro_enq (aTHX_ coro);
1462 ++coro_nready; 1543 ++coro_nready;
1463 1544
1464 UNLOCK;
1465
1466 if (sv_hook) 1545 if (sv_hook)
1467 { 1546 {
1468 dSP; 1547 dSP;
1469 1548
1470 ENTER; 1549 ENTER;
1471 SAVETMPS; 1550 SAVETMPS;
1472 1551
1473 PUSHMARK (SP); 1552 PUSHMARK (SP);
1474 PUTBACK; 1553 PUTBACK;
1475 call_sv (sv_hook, G_DISCARD); 1554 call_sv (sv_hook, G_VOID | G_DISCARD);
1476 SPAGAIN;
1477 1555
1478 FREETMPS; 1556 FREETMPS;
1479 LEAVE; 1557 LEAVE;
1480 } 1558 }
1481 1559
… …
1484 1562
1485 return 1; 1563 return 1;
1486} 1564}
1487 1565
1488static int 1566static int
1489api_is_ready (SV *coro_sv) 1567api_is_ready (pTHX_ SV *coro_sv)
1490{ 1568{
1491 dTHX;
1492 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1569 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1493} 1570}
1494 1571
1495static void 1572INLINE void
1496prepare_schedule (pTHX_ struct transfer_args *ta) 1573prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1497{ 1574{
1498 SV *prev_sv, *next_sv; 1575 SV *prev_sv, *next_sv;
1499 1576
1500 for (;;) 1577 for (;;)
1501 { 1578 {
1502 LOCK;
1503 next_sv = coro_deq (aTHX); 1579 next_sv = coro_deq (aTHX);
1504 1580
1505 /* nothing to schedule: call the idle handler */ 1581 /* nothing to schedule: call the idle handler */
1506 if (expect_false (!next_sv)) 1582 if (expect_false (!next_sv))
1507 { 1583 {
1508 dSP; 1584 dSP;
1509 UNLOCK;
1510 1585
1511 ENTER; 1586 ENTER;
1512 SAVETMPS; 1587 SAVETMPS;
1513 1588
1514 PUSHMARK (SP); 1589 PUSHMARK (SP);
1515 PUTBACK; 1590 PUTBACK;
1516 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1591 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1517 SPAGAIN;
1518 1592
1519 FREETMPS; 1593 FREETMPS;
1520 LEAVE; 1594 LEAVE;
1521 continue; 1595 continue;
1522 } 1596 }
1523 1597
1524 ta->next = SvSTATE (next_sv); 1598 ta->next = SvSTATE_hv (next_sv);
1525 1599
1526 /* cannot transfer to destroyed coros, skip and look for next */ 1600 /* cannot transfer to destroyed coros, skip and look for next */
1527 if (expect_false (ta->next->flags & CF_DESTROYED)) 1601 if (expect_false (ta->next->flags & CF_DESTROYED))
1528 { 1602 {
1529 UNLOCK;
1530 SvREFCNT_dec (next_sv); 1603 SvREFCNT_dec (next_sv);
1531 /* coro_nready is already taken care of by destroy */ 1604 /* coro_nready has already been taken care of by destroy */
1532 continue; 1605 continue;
1533 } 1606 }
1534 1607
1535 --coro_nready; 1608 --coro_nready;
1536 UNLOCK;
1537 break; 1609 break;
1538 } 1610 }
1539 1611
1540 /* free this only after the transfer */ 1612 /* free this only after the transfer */
1541 prev_sv = SvRV (coro_current); 1613 prev_sv = SvRV (coro_current);
1542 ta->prev = SvSTATE (prev_sv); 1614 ta->prev = SvSTATE_hv (prev_sv);
1543 TRANSFER_CHECK (*ta); 1615 TRANSFER_CHECK (*ta);
1544 assert (ta->next->flags & CF_READY); 1616 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1545 ta->next->flags &= ~CF_READY; 1617 ta->next->flags &= ~CF_READY;
1546 SvRV_set (coro_current, next_sv); 1618 SvRV_set (coro_current, next_sv);
1547 1619
1548 LOCK;
1549 free_coro_mortal (aTHX); 1620 free_coro_mortal (aTHX);
1550 coro_mortal = prev_sv; 1621 coro_mortal = prev_sv;
1551 UNLOCK;
1552} 1622}
1553 1623
1554static void 1624INLINE void
1555prepare_cede (pTHX_ struct transfer_args *ta) 1625prepare_cede (pTHX_ struct coro_transfer_args *ta)
1556{ 1626{
1557 api_ready (coro_current); 1627 api_ready (aTHX_ coro_current);
1558 prepare_schedule (aTHX_ ta); 1628 prepare_schedule (aTHX_ ta);
1559} 1629}
1560 1630
1631INLINE void
1632prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1633{
1634 SV *prev = SvRV (coro_current);
1635
1636 if (coro_nready)
1637 {
1638 prepare_schedule (aTHX_ ta);
1639 api_ready (aTHX_ prev);
1640 }
1641 else
1642 prepare_nop (aTHX_ ta);
1643}
1644
1645static void
1646api_schedule (pTHX)
1647{
1648 struct coro_transfer_args ta;
1649
1650 prepare_schedule (aTHX_ &ta);
1651 TRANSFER (ta, 1);
1652}
1653
1561static int 1654static int
1562prepare_cede_notself (pTHX_ struct transfer_args *ta) 1655api_cede (pTHX)
1563{ 1656{
1564 if (coro_nready) 1657 struct coro_transfer_args ta;
1565 { 1658
1566 SV *prev = SvRV (coro_current);
1567 prepare_schedule (aTHX_ ta); 1659 prepare_cede (aTHX_ &ta);
1568 api_ready (prev); 1660
1661 if (expect_true (ta.prev != ta.next))
1662 {
1663 TRANSFER (ta, 1);
1569 return 1; 1664 return 1;
1570 } 1665 }
1571 else 1666 else
1572 return 0; 1667 return 0;
1573} 1668}
1574 1669
1575static void
1576api_schedule (void)
1577{
1578 dTHX;
1579 struct transfer_args ta;
1580
1581 prepare_schedule (aTHX_ &ta);
1582 TRANSFER (ta, 1);
1583}
1584
1585static int 1670static int
1586api_cede (void) 1671api_cede_notself (pTHX)
1587{ 1672{
1588 dTHX; 1673 if (coro_nready)
1674 {
1589 struct transfer_args ta; 1675 struct coro_transfer_args ta;
1590 1676
1591 prepare_cede (aTHX_ &ta); 1677 prepare_cede_notself (aTHX_ &ta);
1592
1593 if (expect_true (ta.prev != ta.next))
1594 {
1595 TRANSFER (ta, 1); 1678 TRANSFER (ta, 1);
1596 return 1; 1679 return 1;
1597 } 1680 }
1598 else 1681 else
1599 return 0; 1682 return 0;
1600} 1683}
1601 1684
1602static int 1685static void
1603api_cede_notself (void)
1604{
1605 dTHX;
1606 struct transfer_args ta;
1607
1608 if (prepare_cede_notself (aTHX_ &ta))
1609 {
1610 TRANSFER (ta, 1);
1611 return 1;
1612 }
1613 else
1614 return 0;
1615}
1616
1617static void
1618api_trace (SV *coro_sv, int flags) 1686api_trace (pTHX_ SV *coro_sv, int flags)
1619{ 1687{
1620 dTHX;
1621 struct coro *coro = SvSTATE (coro_sv); 1688 struct coro *coro = SvSTATE (coro_sv);
1622 1689
1623 if (flags & CC_TRACE) 1690 if (flags & CC_TRACE)
1624 { 1691 {
1625 if (!coro->cctx) 1692 if (!coro->cctx)
1626 coro->cctx = cctx_new (); 1693 coro->cctx = cctx_new_run ();
1627 else if (!(coro->cctx->flags & CC_TRACE)) 1694 else if (!(coro->cctx->flags & CC_TRACE))
1628 croak ("cannot enable tracing on coroutine with custom stack"); 1695 croak ("cannot enable tracing on coroutine with custom stack,");
1629 1696
1630 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1697 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1631 } 1698 }
1632 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1699 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1633 { 1700 {
… …
1638 else 1705 else
1639 coro->slot->runops = RUNOPS_DEFAULT; 1706 coro->slot->runops = RUNOPS_DEFAULT;
1640 } 1707 }
1641} 1708}
1642 1709
1710/*****************************************************************************/
1711/* schedule-like-function opcode (SLF) */
1712
1713static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1714static const CV *slf_cv;
1715static SV **slf_argv;
1716static int slf_argc, slf_arga; /* count, allocated */
1717static I32 slf_ax; /* top of stack, for restore */
1718
1719/* this restores the stack in the case we patched the entersub, to */
1720/* recreate the stack frame as perl will on following calls */
1721/* since entersub cleared the stack */
1722static OP *
1723pp_restore (pTHX)
1724{
1725 int i;
1726 SV **SP = PL_stack_base + slf_ax;
1727
1728 PUSHMARK (SP);
1729
1730 EXTEND (SP, slf_argc + 1);
1731
1732 for (i = 0; i < slf_argc; ++i)
1733 PUSHs (sv_2mortal (slf_argv [i]));
1734
1735 PUSHs ((SV *)CvGV (slf_cv));
1736
1737 RETURNOP (slf_restore.op_first);
1738}
1739
1643static int 1740static void
1644coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1741slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1645{ 1742{
1646 AV *padlist; 1743 SV **arg = (SV **)slf_frame.data;
1647 AV *av = (AV *)mg->mg_obj;
1648 1744
1649 abort (); 1745 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1650
1651 return 0;
1652} 1746}
1653 1747
1654static MGVTBL coro_gensub_vtbl = { 1748static void
1655 0, 0, 0, 0, 1749slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1656 coro_gensub_free 1750{
1657}; 1751 if (items != 2)
1752 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1753
1754 frame->prepare = slf_prepare_transfer;
1755 frame->check = slf_check_nop;
1756 frame->data = (void *)arg; /* let's hope it will stay valid */
1757}
1758
1759static void
1760slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1761{
1762 frame->prepare = prepare_schedule;
1763 frame->check = slf_check_nop;
1764}
1765
1766static void
1767slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768{
1769 frame->prepare = prepare_cede;
1770 frame->check = slf_check_nop;
1771}
1772
1773static void
1774slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1775{
1776 frame->prepare = prepare_cede_notself;
1777 frame->check = slf_check_nop;
1778}
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 /* make sure we put something on the stack in scalar context */
1846 if (GIMME_V == G_SCALAR)
1847 {
1848 dSP;
1849 SV **bot = PL_stack_base + checkmark;
1850
1851 if (sp == bot) /* too few, push undef */
1852 bot [1] = &PL_sv_undef;
1853 else if (sp != bot + 1) /* too many, take last one */
1854 bot [1] = *sp;
1855
1856 SP = bot + 1;
1857
1858 PUTBACK;
1859 }
1860
1861 /* exception handling */
1862 if (expect_false (coro_throw))
1863 {
1864 SV *exception = sv_2mortal (coro_throw);
1865
1866 coro_throw = 0;
1867 sv_setsv (ERRSV, exception);
1868 croak (0);
1869 }
1870
1871 return NORMAL;
1872}
1873
1874static void
1875api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1876{
1877 int i;
1878 SV **arg = PL_stack_base + ax;
1879 int items = PL_stack_sp - arg + 1;
1880
1881 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1882
1883 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1884 && PL_op->op_ppaddr != pp_slf)
1885 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1886
1887 CvFLAGS (cv) |= CVf_SLF;
1888 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1889 slf_cv = cv;
1890
1891 /* we patch the op, and then re-run the whole call */
1892 /* we have to put the same argument on the stack for this to work */
1893 /* and this will be done by pp_restore */
1894 slf_restore.op_next = (OP *)&slf_restore;
1895 slf_restore.op_type = OP_CUSTOM;
1896 slf_restore.op_ppaddr = pp_restore;
1897 slf_restore.op_first = PL_op;
1898
1899 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1900
1901 if (PL_op->op_flags & OPf_STACKED)
1902 {
1903 if (items > slf_arga)
1904 {
1905 slf_arga = items;
1906 free (slf_argv);
1907 slf_argv = malloc (slf_arga * sizeof (SV *));
1908 }
1909
1910 slf_argc = items;
1911
1912 for (i = 0; i < items; ++i)
1913 slf_argv [i] = SvREFCNT_inc (arg [i]);
1914 }
1915 else
1916 slf_argc = 0;
1917
1918 PL_op->op_ppaddr = pp_slf;
1919 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1920
1921 PL_op = (OP *)&slf_restore;
1922}
1658 1923
1659/*****************************************************************************/ 1924/*****************************************************************************/
1660/* PerlIO::cede */ 1925/* PerlIO::cede */
1661 1926
1662typedef struct 1927typedef struct
… …
1690 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 1955 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1691 double now = nvtime (); 1956 double now = nvtime ();
1692 1957
1693 if (now >= self->next) 1958 if (now >= self->next)
1694 { 1959 {
1695 api_cede (); 1960 api_cede (aTHX);
1696 self->next = now + self->every; 1961 self->next = now + self->every;
1697 } 1962 }
1698 1963
1699 return PerlIOBuf_flush (aTHX_ f); 1964 return PerlIOBuf_flush (aTHX_ f);
1700} 1965}
… …
1729 PerlIOBuf_get_ptr, 1994 PerlIOBuf_get_ptr,
1730 PerlIOBuf_get_cnt, 1995 PerlIOBuf_get_cnt,
1731 PerlIOBuf_set_ptrcnt, 1996 PerlIOBuf_set_ptrcnt,
1732}; 1997};
1733 1998
1999/*****************************************************************************/
2000/* Coro::Semaphore */
2001
2002static void
2003coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2004{
2005 SV *count_sv = AvARRAY (av)[0];
2006 IV count = SvIVX (count_sv);
2007
2008 count += adjust;
2009 SvIVX (count_sv) = count;
2010
2011 /* now wake up as many waiters as are expected to lock */
2012 while (count > 0 && AvFILLp (av) > 0)
2013 {
2014 SV *cb;
2015
2016 /* swap first two elements so we can shift a waiter */
2017 AvARRAY (av)[0] = AvARRAY (av)[1];
2018 AvARRAY (av)[1] = count_sv;
2019 cb = av_shift (av);
2020
2021 if (SvOBJECT (cb))
2022 api_ready (aTHX_ cb);
2023 else
2024 croak ("callbacks not yet supported");
2025
2026 SvREFCNT_dec (cb);
2027
2028 --count;
2029 }
2030}
2031
2032static void
2033coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2034{
2035 /* call $sem->adjust (0) to possibly wake up some other waiters */
2036 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2037}
2038
2039static int
2040slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2041{
2042 AV *av = (AV *)frame->data;
2043 SV *count_sv = AvARRAY (av)[0];
2044
2045 if (SvIVX (count_sv) > 0)
2046 {
2047 SvSTATE_current->on_destroy = 0;
2048 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2049 return 0;
2050 }
2051 else
2052 {
2053 int i;
2054 /* if we were woken up but can't down, we look through the whole */
2055 /* waiters list and only add us if we aren't in there already */
2056 /* this avoids some degenerate memory usage cases */
2057
2058 for (i = 1; i <= AvFILLp (av); ++i)
2059 if (AvARRAY (av)[i] == SvRV (coro_current))
2060 return 1;
2061
2062 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2063 return 1;
2064 }
2065}
2066
2067static void
2068slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2069{
2070 AV *av = (AV *)SvRV (arg [0]);
2071
2072 if (SvIVX (AvARRAY (av)[0]) > 0)
2073 {
2074 frame->data = (void *)av;
2075 frame->prepare = prepare_nop;
2076 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2077 }
2078 else
2079 {
2080 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2081
2082 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2083 frame->prepare = prepare_schedule;
2084
2085 /* to avoid race conditions when a woken-up coro gets terminated */
2086 /* we arrange for a temporary on_destroy that calls adjust (0) */
2087 assert (!SvSTATE_current->on_destroy);//D
2088 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2089 }
2090
2091 frame->check = slf_check_semaphore_down;
2092
2093}
2094
2095/*****************************************************************************/
2096/* gensub: simple closure generation utility */
2097
2098#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2099
2100/* create a closure from XS, returns a code reference */
2101/* the arg can be accessed via GENSUB_ARG from the callback */
2102/* the callback must use dXSARGS/XSRETURN */
2103static SV *
2104gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2105{
2106 CV *cv = (CV *)newSV (0);
2107
2108 sv_upgrade ((SV *)cv, SVt_PVCV);
2109
2110 CvANON_on (cv);
2111 CvISXSUB_on (cv);
2112 CvXSUB (cv) = xsub;
2113 GENSUB_ARG = arg;
2114
2115 return newRV_noinc ((SV *)cv);
2116}
2117
2118/*****************************************************************************/
2119/* Coro::AIO */
2120
2121#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2122
2123/* helper storage struct */
2124struct io_state
2125{
2126 int errorno;
2127 I32 laststype; /* U16 in 5.10.0 */
2128 int laststatval;
2129 Stat_t statcache;
2130};
2131
2132static void
2133coro_aio_callback (pTHX_ CV *cv)
2134{
2135 dXSARGS;
2136 AV *state = (AV *)GENSUB_ARG;
2137 SV *coro = av_pop (state);
2138 SV *data_sv = newSV (sizeof (struct io_state));
2139
2140 av_extend (state, items);
2141
2142 sv_upgrade (data_sv, SVt_PV);
2143 SvCUR_set (data_sv, sizeof (struct io_state));
2144 SvPOK_only (data_sv);
2145
2146 {
2147 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2148
2149 data->errorno = errno;
2150 data->laststype = PL_laststype;
2151 data->laststatval = PL_laststatval;
2152 data->statcache = PL_statcache;
2153 }
2154
2155 /* now build the result vector out of all the parameters and the data_sv */
2156 {
2157 int i;
2158
2159 for (i = 0; i < items; ++i)
2160 av_push (state, SvREFCNT_inc_NN (ST (i)));
2161 }
2162
2163 av_push (state, data_sv);
2164
2165 api_ready (aTHX_ coro);
2166 SvREFCNT_dec (coro);
2167 SvREFCNT_dec ((AV *)state);
2168}
2169
2170static int
2171slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2172{
2173 AV *state = (AV *)frame->data;
2174
2175 /* one element that is an RV? repeat! */
2176 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2177 return 1;
2178
2179 /* restore status */
2180 {
2181 SV *data_sv = av_pop (state);
2182 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2183
2184 errno = data->errorno;
2185 PL_laststype = data->laststype;
2186 PL_laststatval = data->laststatval;
2187 PL_statcache = data->statcache;
2188
2189 SvREFCNT_dec (data_sv);
2190 }
2191
2192 /* push result values */
2193 {
2194 dSP;
2195 int i;
2196
2197 EXTEND (SP, AvFILLp (state) + 1);
2198 for (i = 0; i <= AvFILLp (state); ++i)
2199 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2200
2201 PUTBACK;
2202 }
2203
2204 return 0;
2205}
2206
2207static void
2208slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2209{
2210 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2211 SV *coro_hv = SvRV (coro_current);
2212 struct coro *coro = SvSTATE_hv (coro_hv);
2213
2214 /* put our coroutine id on the state arg */
2215 av_push (state, SvREFCNT_inc_NN (coro_hv));
2216
2217 /* first see whether we have a non-zero priority and set it as AIO prio */
2218 if (coro->prio)
2219 {
2220 dSP;
2221
2222 static SV *prio_cv;
2223 static SV *prio_sv;
2224
2225 if (expect_false (!prio_cv))
2226 {
2227 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2228 prio_sv = newSViv (0);
2229 }
2230
2231 PUSHMARK (SP);
2232 sv_setiv (prio_sv, coro->prio);
2233 XPUSHs (prio_sv);
2234
2235 PUTBACK;
2236 call_sv (prio_cv, G_VOID | G_DISCARD);
2237 }
2238
2239 /* now call the original request */
2240 {
2241 dSP;
2242 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2243 int i;
2244
2245 PUSHMARK (SP);
2246
2247 /* first push all args to the stack */
2248 EXTEND (SP, items + 1);
2249
2250 for (i = 0; i < items; ++i)
2251 PUSHs (arg [i]);
2252
2253 /* now push the callback closure */
2254 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2255
2256 /* now call the AIO function - we assume our request is uncancelable */
2257 PUTBACK;
2258 call_sv ((SV *)req, G_VOID | G_DISCARD);
2259 }
2260
2261 /* now that the requets is going, we loop toll we have a result */
2262 frame->data = (void *)state;
2263 frame->prepare = prepare_schedule;
2264 frame->check = slf_check_aio_req;
2265}
2266
2267static void
2268coro_aio_req_xs (pTHX_ CV *cv)
2269{
2270 dXSARGS;
2271
2272 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2273
2274 XSRETURN_EMPTY;
2275}
2276
2277/*****************************************************************************/
1734 2278
1735MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2279MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1736 2280
1737PROTOTYPES: DISABLE 2281PROTOTYPES: DISABLE
1738 2282
1739BOOT: 2283BOOT:
1740{ 2284{
1741#ifdef USE_ITHREADS 2285#ifdef USE_ITHREADS
1742 MUTEX_INIT (&coro_mutex); 2286# if CORO_PTHREAD
2287 coro_thx = PERL_GET_CONTEXT;
2288# endif
1743#endif 2289#endif
1744 BOOT_PAGESIZE; 2290 BOOT_PAGESIZE;
1745 2291
1746 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2292 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1747 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2293 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1765 main_top_env = PL_top_env; 2311 main_top_env = PL_top_env;
1766 2312
1767 while (main_top_env->je_prev) 2313 while (main_top_env->je_prev)
1768 main_top_env = main_top_env->je_prev; 2314 main_top_env = main_top_env->je_prev;
1769 2315
2316 {
2317 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2318
2319 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2320 hv_store_ent (PL_custom_op_names, slf,
2321 newSVpv ("coro_slf", 0), 0);
2322
2323 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2324 hv_store_ent (PL_custom_op_descs, slf,
2325 newSVpv ("coro schedule like function", 0), 0);
2326 }
2327
1770 coroapi.ver = CORO_API_VERSION; 2328 coroapi.ver = CORO_API_VERSION;
1771 coroapi.rev = CORO_API_REVISION; 2329 coroapi.rev = CORO_API_REVISION;
2330
1772 coroapi.transfer = api_transfer; 2331 coroapi.transfer = api_transfer;
2332
2333 coroapi.sv_state = SvSTATE_;
2334 coroapi.execute_slf = api_execute_slf;
2335 coroapi.prepare_nop = prepare_nop;
2336 coroapi.prepare_schedule = prepare_schedule;
2337 coroapi.prepare_cede = prepare_cede;
2338 coroapi.prepare_cede_notself = prepare_cede_notself;
1773 2339
1774 { 2340 {
1775 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2341 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1776 2342
1777 if (!svp) croak ("Time::HiRes is required"); 2343 if (!svp) croak ("Time::HiRes is required");
… …
1810 av_push (coro->args, newSVsv (ST (i))); 2376 av_push (coro->args, newSVsv (ST (i)));
1811} 2377}
1812 OUTPUT: 2378 OUTPUT:
1813 RETVAL 2379 RETVAL
1814 2380
1815# these not obviously related functions are all rolled into the same xs
1816# function to increase chances that they all will call transfer with the same
1817# stack offset
1818void 2381void
1819_set_stacklevel (...) 2382transfer (...)
1820 ALIAS: 2383 PROTOTYPE: $$
1821 Coro::State::transfer = 1 2384 CODE:
1822 Coro::schedule = 2 2385 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1823 Coro::cede = 3
1824 Coro::cede_notself = 4
1825 CODE:
1826{
1827 struct transfer_args ta;
1828
1829 PUTBACK;
1830 switch (ix)
1831 {
1832 case 0:
1833 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1834 ta.next = 0;
1835 break;
1836
1837 case 1:
1838 if (items != 2)
1839 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1840
1841 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1842 break;
1843
1844 case 2:
1845 prepare_schedule (aTHX_ &ta);
1846 break;
1847
1848 case 3:
1849 prepare_cede (aTHX_ &ta);
1850 break;
1851
1852 case 4:
1853 if (!prepare_cede_notself (aTHX_ &ta))
1854 XSRETURN_EMPTY;
1855
1856 break;
1857 }
1858 SPAGAIN;
1859
1860 BARRIER;
1861 PUTBACK;
1862 TRANSFER (ta, 0);
1863 SPAGAIN; /* might be the sp of a different coroutine now */
1864 /* be extra careful not to ever do anything after TRANSFER */
1865}
1866 2386
1867bool 2387bool
1868_destroy (SV *coro_sv) 2388_destroy (SV *coro_sv)
1869 CODE: 2389 CODE:
1870 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2390 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1877 CODE: 2397 CODE:
1878 _exit (code); 2398 _exit (code);
1879 2399
1880int 2400int
1881cctx_stacksize (int new_stacksize = 0) 2401cctx_stacksize (int new_stacksize = 0)
2402 PROTOTYPE: ;$
1882 CODE: 2403 CODE:
1883 RETVAL = coro_stacksize; 2404 RETVAL = cctx_stacksize;
1884 if (new_stacksize) 2405 if (new_stacksize)
2406 {
1885 coro_stacksize = new_stacksize; 2407 cctx_stacksize = new_stacksize;
2408 ++cctx_gen;
2409 }
1886 OUTPUT: 2410 OUTPUT:
1887 RETVAL 2411 RETVAL
1888 2412
1889int 2413int
2414cctx_max_idle (int max_idle = 0)
2415 PROTOTYPE: ;$
2416 CODE:
2417 RETVAL = cctx_max_idle;
2418 if (max_idle > 1)
2419 cctx_max_idle = max_idle;
2420 OUTPUT:
2421 RETVAL
2422
2423int
1890cctx_count () 2424cctx_count ()
2425 PROTOTYPE:
1891 CODE: 2426 CODE:
1892 RETVAL = cctx_count; 2427 RETVAL = cctx_count;
1893 OUTPUT: 2428 OUTPUT:
1894 RETVAL 2429 RETVAL
1895 2430
1896int 2431int
1897cctx_idle () 2432cctx_idle ()
2433 PROTOTYPE:
1898 CODE: 2434 CODE:
1899 RETVAL = cctx_idle; 2435 RETVAL = cctx_idle;
1900 OUTPUT: 2436 OUTPUT:
1901 RETVAL 2437 RETVAL
1902 2438
1903void 2439void
1904list () 2440list ()
2441 PROTOTYPE:
1905 PPCODE: 2442 PPCODE:
1906{ 2443{
1907 struct coro *coro; 2444 struct coro *coro;
1908 for (coro = coro_first; coro; coro = coro->next) 2445 for (coro = coro_first; coro; coro = coro->next)
1909 if (coro->hv) 2446 if (coro->hv)
… …
1968 RETVAL = boolSV (coro->flags & ix); 2505 RETVAL = boolSV (coro->flags & ix);
1969 OUTPUT: 2506 OUTPUT:
1970 RETVAL 2507 RETVAL
1971 2508
1972void 2509void
2510throw (Coro::State self, SV *throw = &PL_sv_undef)
2511 PROTOTYPE: $;$
2512 CODE:
2513{
2514 struct coro *current = SvSTATE_current;
2515 SV **throwp = self == current ? &coro_throw : &self->throw;
2516 SvREFCNT_dec (*throwp);
2517 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2518}
2519
2520void
1973api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2521api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2522 PROTOTYPE: $;$
2523 C_ARGS: aTHX_ coro, flags
1974 2524
1975SV * 2525SV *
1976has_cctx (Coro::State coro) 2526has_cctx (Coro::State coro)
1977 PROTOTYPE: $ 2527 PROTOTYPE: $
1978 CODE: 2528 CODE:
… …
1986 CODE: 2536 CODE:
1987 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2537 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1988 OUTPUT: 2538 OUTPUT:
1989 RETVAL 2539 RETVAL
1990 2540
1991IV 2541UV
1992rss (Coro::State coro) 2542rss (Coro::State coro)
1993 PROTOTYPE: $ 2543 PROTOTYPE: $
1994 ALIAS: 2544 ALIAS:
1995 usecount = 1 2545 usecount = 1
1996 CODE: 2546 CODE:
… …
2002 OUTPUT: 2552 OUTPUT:
2003 RETVAL 2553 RETVAL
2004 2554
2005void 2555void
2006force_cctx () 2556force_cctx ()
2557 PROTOTYPE:
2007 CODE: 2558 CODE:
2008 struct coro *coro = SvSTATE (coro_current);
2009 coro->cctx->idle_sp = 0; 2559 SvSTATE_current->cctx->idle_sp = 0;
2010
2011void
2012throw (Coro::State self, SV *throw = &PL_sv_undef)
2013 PROTOTYPE: $;$
2014 CODE:
2015 SvREFCNT_dec (self->throw);
2016 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2017 2560
2018void 2561void
2019swap_defsv (Coro::State self) 2562swap_defsv (Coro::State self)
2020 PROTOTYPE: $ 2563 PROTOTYPE: $
2021 ALIAS: 2564 ALIAS:
2022 swap_defav = 1 2565 swap_defav = 1
2023 CODE: 2566 CODE:
2024 if (!self->slot) 2567 if (!self->slot)
2025 croak ("cannot swap state with coroutine that has no saved state"); 2568 croak ("cannot swap state with coroutine that has no saved state,");
2026 else 2569 else
2027 { 2570 {
2028 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2571 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2029 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2572 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2030 2573
2031 SV *tmp = *src; *src = *dst; *dst = tmp; 2574 SV *tmp = *src; *src = *dst; *dst = tmp;
2032 } 2575 }
2576
2033 2577
2034MODULE = Coro::State PACKAGE = Coro 2578MODULE = Coro::State PACKAGE = Coro
2035 2579
2036BOOT: 2580BOOT:
2037{ 2581{
… …
2055 2599
2056 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2600 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2057 coro_ready[i] = newAV (); 2601 coro_ready[i] = newAV ();
2058 2602
2059 { 2603 {
2060 SV *sv = perl_get_sv ("Coro::API", TRUE); 2604 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2061 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2062 2605
2063 coroapi.schedule = api_schedule; 2606 coroapi.schedule = api_schedule;
2064 coroapi.cede = api_cede; 2607 coroapi.cede = api_cede;
2065 coroapi.cede_notself = api_cede_notself; 2608 coroapi.cede_notself = api_cede_notself;
2066 coroapi.ready = api_ready; 2609 coroapi.ready = api_ready;
2067 coroapi.is_ready = api_is_ready; 2610 coroapi.is_ready = api_is_ready;
2068 coroapi.nready = &coro_nready; 2611 coroapi.nready = coro_nready;
2069 coroapi.current = coro_current; 2612 coroapi.current = coro_current;
2070 2613
2071 GCoroAPI = &coroapi; 2614 GCoroAPI = &coroapi;
2072 sv_setiv (sv, (IV)&coroapi); 2615 sv_setiv (sv, (IV)&coroapi);
2073 SvREADONLY_on (sv); 2616 SvREADONLY_on (sv);
2074 } 2617 }
2075} 2618}
2619
2620void
2621schedule (...)
2622 CODE:
2623 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2624
2625void
2626cede (...)
2627 CODE:
2628 CORO_EXECUTE_SLF_XS (slf_init_cede);
2629
2630void
2631cede_notself (...)
2632 CODE:
2633 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2076 2634
2077void 2635void
2078_set_current (SV *current) 2636_set_current (SV *current)
2079 PROTOTYPE: $ 2637 PROTOTYPE: $
2080 CODE: 2638 CODE:
… …
2083 2641
2084void 2642void
2085_set_readyhook (SV *hook) 2643_set_readyhook (SV *hook)
2086 PROTOTYPE: $ 2644 PROTOTYPE: $
2087 CODE: 2645 CODE:
2088 LOCK;
2089 SvREFCNT_dec (coro_readyhook); 2646 SvREFCNT_dec (coro_readyhook);
2090 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2647 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2091 UNLOCK;
2092 2648
2093int 2649int
2094prio (Coro::State coro, int newprio = 0) 2650prio (Coro::State coro, int newprio = 0)
2651 PROTOTYPE: $;$
2095 ALIAS: 2652 ALIAS:
2096 nice = 1 2653 nice = 1
2097 CODE: 2654 CODE:
2098{ 2655{
2099 RETVAL = coro->prio; 2656 RETVAL = coro->prio;
… …
2114 2671
2115SV * 2672SV *
2116ready (SV *self) 2673ready (SV *self)
2117 PROTOTYPE: $ 2674 PROTOTYPE: $
2118 CODE: 2675 CODE:
2119 RETVAL = boolSV (api_ready (self)); 2676 RETVAL = boolSV (api_ready (aTHX_ self));
2120 OUTPUT: 2677 OUTPUT:
2121 RETVAL 2678 RETVAL
2122 2679
2123int 2680int
2124nready (...) 2681nready (...)
… …
2131# for async_pool speedup 2688# for async_pool speedup
2132void 2689void
2133_pool_1 (SV *cb) 2690_pool_1 (SV *cb)
2134 CODE: 2691 CODE:
2135{ 2692{
2136 struct coro *coro = SvSTATE (coro_current);
2137 HV *hv = (HV *)SvRV (coro_current); 2693 HV *hv = (HV *)SvRV (coro_current);
2694 struct coro *coro = SvSTATE_hv ((SV *)hv);
2138 AV *defav = GvAV (PL_defgv); 2695 AV *defav = GvAV (PL_defgv);
2139 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2696 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2140 AV *invoke_av; 2697 AV *invoke_av;
2141 int i, len; 2698 int i, len;
2142 2699
… …
2163 { 2720 {
2164 av_fill (defav, len - 1); 2721 av_fill (defav, len - 1);
2165 for (i = 0; i < len; ++i) 2722 for (i = 0; i < len; ++i)
2166 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 2723 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2167 } 2724 }
2168
2169 SvREFCNT_dec (invoke);
2170} 2725}
2171 2726
2172void 2727void
2173_pool_2 (SV *cb) 2728_pool_2 (SV *cb)
2174 CODE: 2729 CODE:
2175{ 2730{
2176 struct coro *coro = SvSTATE (coro_current); 2731 HV *hv = (HV *)SvRV (coro_current);
2732 struct coro *coro = SvSTATE_hv ((SV *)hv);
2177 2733
2178 sv_setsv (cb, &PL_sv_undef); 2734 sv_setsv (cb, &PL_sv_undef);
2179 2735
2180 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2736 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2181 coro->saved_deffh = 0; 2737 coro->saved_deffh = 0;
2182 2738
2183 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2739 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2184 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2740 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2185 { 2741 {
2186 SV *old = PL_diehook; 2742 SV *old = PL_diehook;
2187 PL_diehook = 0; 2743 PL_diehook = 0;
2188 SvREFCNT_dec (old); 2744 SvREFCNT_dec (old);
2189 croak ("\3async_pool terminate\2\n"); 2745 croak ("\3async_pool terminate\2\n");
2190 } 2746 }
2191 2747
2192 av_clear (GvAV (PL_defgv)); 2748 av_clear (GvAV (PL_defgv));
2193 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2749 hv_store (hv, "desc", sizeof ("desc") - 1,
2194 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2750 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2195 2751
2196 coro->prio = 0; 2752 coro->prio = 0;
2197 2753
2198 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2754 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2199 api_trace (coro_current, 0); 2755 api_trace (aTHX_ coro_current, 0);
2200 2756
2201 av_push (av_async_pool, newSVsv (coro_current)); 2757 av_push (av_async_pool, newSVsv (coro_current));
2202} 2758}
2203 2759
2204#if 0
2205 2760
2206void 2761MODULE = Coro::State PACKAGE = PerlIO::cede
2207_generator_call (...) 2762
2208 PROTOTYPE: @ 2763BOOT:
2209 PPCODE: 2764 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2210 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr); 2765
2211 xxxx 2766
2212 abort (); 2767MODULE = Coro::State PACKAGE = Coro::Semaphore
2213 2768
2214SV * 2769SV *
2215gensub (SV *sub, ...) 2770new (SV *klass, SV *count_ = 0)
2216 PROTOTYPE: &;@ 2771 CODE:
2217 CODE:
2218{ 2772{
2219 struct coro *coro; 2773 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2220 MAGIC *mg; 2774 AV *av = newAV ();
2221 CV *xcv; 2775 SV **ary;
2222 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2223 int i;
2224 2776
2225 CvGV (ncv) = CvGV (cv); 2777 /* unfortunately, building manually saves memory */
2226 CvFILE (ncv) = CvFILE (cv); 2778 Newx (ary, 2, SV *);
2779 AvALLOC (av) = ary;
2780 AvARRAY (av) = ary;
2781 AvMAX (av) = 1;
2782 AvFILLp (av) = 0;
2783 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2227 2784
2228 Newz (0, coro, 1, struct coro); 2785 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2229 coro->args = newAV ();
2230 coro->flags = CF_NEW;
2231
2232 av_extend (coro->args, items - 1);
2233 for (i = 1; i < items; i++)
2234 av_push (coro->args, newSVsv (ST (i)));
2235
2236 CvISXSUB_on (ncv);
2237 CvXSUBANY (ncv).any_ptr = (void *)coro;
2238
2239 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2240
2241 CvXSUB (ncv) = CvXSUB (xcv);
2242 CvANON_on (ncv);
2243
2244 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2245 RETVAL = newRV_noinc ((SV *)ncv);
2246} 2786}
2247 OUTPUT: 2787 OUTPUT:
2248 RETVAL 2788 RETVAL
2249 2789
2250#endif 2790SV *
2251 2791count (SV *self)
2252 2792 CODE:
2253MODULE = Coro::State PACKAGE = Coro::AIO 2793 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2794 OUTPUT:
2795 RETVAL
2254 2796
2255void 2797void
2256_get_state (SV *self) 2798up (SV *self, int adjust = 1)
2257 PPCODE: 2799 ALIAS:
2258{ 2800 adjust = 1
2259 AV *defav = GvAV (PL_defgv); 2801 CODE:
2260 AV *av = newAV (); 2802 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2261 int i;
2262 SV *data_sv = newSV (sizeof (struct io_state));
2263 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2264 SvCUR_set (data_sv, sizeof (struct io_state));
2265 SvPOK_only (data_sv);
2266
2267 data->errorno = errno;
2268 data->laststype = PL_laststype;
2269 data->laststatval = PL_laststatval;
2270 data->statcache = PL_statcache;
2271
2272 av_extend (av, AvFILLp (defav) + 1 + 1);
2273
2274 for (i = 0; i <= AvFILLp (defav); ++i)
2275 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2276
2277 av_push (av, data_sv);
2278
2279 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2280
2281 api_ready (self);
2282}
2283 2803
2284void 2804void
2285_set_state (SV *state) 2805down (SV *self)
2286 PROTOTYPE: $ 2806 CODE:
2287 PPCODE: 2807 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2808
2809void
2810try (SV *self)
2811 PPCODE:
2288{ 2812{
2289 AV *av = (AV *)SvRV (state); 2813 AV *av = (AV *)SvRV (self);
2290 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 2814 SV *count_sv = AvARRAY (av)[0];
2815 IV count = SvIVX (count_sv);
2816
2817 if (count > 0)
2818 {
2819 --count;
2820 SvIVX (count_sv) = count;
2821 XSRETURN_YES;
2822 }
2823 else
2824 XSRETURN_NO;
2825}
2826
2827void
2828waiters (SV *self)
2829 CODE:
2830{
2831 AV *av = (AV *)SvRV (self);
2832
2833 if (GIMME_V == G_SCALAR)
2834 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2835 else
2836 {
2291 int i; 2837 int i;
2292
2293 errno = data->errorno;
2294 PL_laststype = data->laststype;
2295 PL_laststatval = data->laststatval;
2296 PL_statcache = data->statcache;
2297
2298 EXTEND (SP, AvFILLp (av)); 2838 EXTEND (SP, AvFILLp (av) + 1 - 1);
2299 for (i = 0; i < AvFILLp (av); ++i) 2839 for (i = 1; i <= AvFILLp (av); ++i)
2300 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 2840 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2841 }
2301} 2842}
2302 2843
2303 2844
2304MODULE = Coro::State PACKAGE = Coro::AnyEvent 2845MODULE = Coro::State PACKAGE = Coro::AnyEvent
2305 2846
2306BOOT: 2847BOOT:
2307 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2848 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2308 2849
2309SV * 2850void
2310_schedule (...) 2851_schedule (...)
2311 PROTOTYPE: @
2312 CODE: 2852 CODE:
2313{ 2853{
2314 static int incede; 2854 static int incede;
2315 2855
2316 api_cede_notself (); 2856 api_cede_notself (aTHX);
2317 2857
2318 ++incede; 2858 ++incede;
2319 while (coro_nready >= incede && api_cede ()) 2859 while (coro_nready >= incede && api_cede (aTHX))
2320 ; 2860 ;
2321 2861
2322 sv_setsv (sv_activity, &PL_sv_undef); 2862 sv_setsv (sv_activity, &PL_sv_undef);
2323 if (coro_nready >= incede) 2863 if (coro_nready >= incede)
2324 { 2864 {
2325 PUSHMARK (SP); 2865 PUSHMARK (SP);
2326 PUTBACK; 2866 PUTBACK;
2327 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 2867 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2328 SPAGAIN;
2329 } 2868 }
2330 2869
2331 --incede; 2870 --incede;
2332} 2871}
2333 2872
2334 2873
2335MODULE = Coro::State PACKAGE = PerlIO::cede 2874MODULE = Coro::State PACKAGE = Coro::AIO
2336 2875
2337BOOT: 2876void
2338 PerlIO_define_layer (aTHX_ &PerlIO_cede); 2877_register (char *target, char *proto, SV *req)
2878 CODE:
2879{
2880 HV *st;
2881 GV *gvp;
2882 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2883 /* newXSproto doesn't return the CV on 5.8 */
2884 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2885 sv_setpv ((SV *)slf_cv, proto);
2886 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2887}
2888

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines