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Comparing Coro/Coro/State.xs (file contents):
Revision 1.250 by root, Wed Oct 22 16:34:07 2008 UTC vs.
Revision 1.287 by root, Mon Nov 17 07:03:12 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) \
… …
81# ifndef IS_PADCONST 78# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
83# endif 80# endif
84#endif 81#endif
85 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
86/* 5.8.8 */ 93/* 5.8.8 */
87#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
88# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
89#endif 96#endif
90#ifndef newSV 97#ifndef newSV
91# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
92#endif 99#endif
93#ifndef SvREFCNT_inc_NN
94# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
95#endif
96
97/* 5.11 */
98#ifndef CxHASARGS
99# define CxHASARGS(cx) (cx)->blk_sub.hasargs
100#endif
101 100
102/* 5.8.7 */ 101/* 5.8.7 */
103#ifndef SvRV_set 102#ifndef SvRV_set
104# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
105#endif 104#endif
… …
117# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
118#endif 117#endif
119 118
120/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
121 * portable way as possible. */ 120 * portable way as possible. */
122#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
123#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
124 126
125#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
126 128
127#if __GNUC__ >= 3 129#if __GNUC__ >= 3
128# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
129# define BARRIER __asm__ __volatile__ ("" : : : "memory")
130# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
131#else 133#else
132# define attribute(x) 134# define attribute(x)
133# define BARRIER
134# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
135#endif 137#endif
136 138
137#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
138#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
139 141
140#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
141 143
142#include "CoroAPI.h" 144#include "CoroAPI.h"
143 145
144#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
145static perl_mutex coro_mutex; 147# if CORO_PTHREAD
146# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
147# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
148#else
149# define LOCK (void)0
150# define UNLOCK (void)0
151#endif 149# endif
152 150#endif
153/* helper storage struct for Coro::AIO */
154struct io_state
155{
156 AV *res;
157 int errorno;
158 I32 laststype;
159 int laststatval;
160 Stat_t statcache;
161};
162 151
163static double (*nvtime)(); /* so why doesn't it take void? */ 152static double (*nvtime)(); /* so why doesn't it take void? */
164 153
154static U32 cctx_gen;
165static size_t coro_stacksize = CORO_STACKSIZE; 155static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 156static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 157static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 158static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 159static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed after next transfer */ 160static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 161
172static GV *irsgv; /* $/ */ 162static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 163static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 164static SV *rv_diehook;
175static SV *rv_warnhook; 165static SV *rv_warnhook;
… …
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 184 CC_TRACE_LINE = 0x10, /* trace each statement */
195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 185 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
196}; 186};
197 187
198/* this is a structure representing a c-level coroutine */ 188/* this is a structure representing a c-level coroutine */
199typedef struct coro_cctx { 189typedef struct coro_cctx
190{
200 struct coro_cctx *next; 191 struct coro_cctx *next;
201 192
202 /* the stack */ 193 /* the stack */
203 void *sptr; 194 void *sptr;
204 size_t ssize; 195 size_t ssize;
… …
207 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 198 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
208 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 199 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
209 JMPENV *top_env; 200 JMPENV *top_env;
210 coro_context cctx; 201 coro_context cctx;
211 202
203 U32 gen;
212#if CORO_USE_VALGRIND 204#if CORO_USE_VALGRIND
213 int valgrind_id; 205 int valgrind_id;
214#endif 206#endif
215 unsigned char flags; 207 unsigned char flags;
216} coro_cctx; 208} coro_cctx;
… …
221 CF_NEW = 0x0004, /* has never been switched to */ 213 CF_NEW = 0x0004, /* has never been switched to */
222 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 214 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
223}; 215};
224 216
225/* the structure where most of the perl state is stored, overlaid on the cxstack */ 217/* the structure where most of the perl state is stored, overlaid on the cxstack */
226typedef struct { 218typedef struct
219{
227 SV *defsv; 220 SV *defsv;
228 AV *defav; 221 AV *defav;
229 SV *errsv; 222 SV *errsv;
230 SV *irsgv; 223 SV *irsgv;
231#define VAR(name,type) type name; 224#define VAR(name,type) type name;
… …
235 228
236#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
237 230
238/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
239struct coro { 232struct coro {
240 /* the c coroutine allocated to this perl coroutine, if any */ 233 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx; 234 coro_cctx *cctx;
242 235
243 /* process data */ 236 /* state data */
237 struct CoroSLF slf_frame; /* saved slf frame */
244 AV *mainstack; 238 AV *mainstack;
245 perl_slots *slot; /* basically the saved sp */ 239 perl_slots *slot; /* basically the saved sp */
246 240
247 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
248 int refcnt; /* coroutines are refcounted, yes */ 242 int refcnt; /* coroutines are refcounted, yes */
249 int flags; /* CF_ flags */ 243 int flags; /* CF_ flags */
250 HV *hv; /* the perl hash associated with this coro, if any */ 244 HV *hv; /* the perl hash associated with this coro, if any */
245 void (*on_destroy)(pTHX_ struct coro *coro);
251 246
252 /* statistics */ 247 /* statistics */
253 int usecount; /* number of transfers to this coro */ 248 int usecount; /* number of transfers to this coro */
254 249
255 /* coro process data */ 250 /* coro process data */
… …
263 struct coro *next, *prev; 258 struct coro *next, *prev;
264}; 259};
265 260
266typedef struct coro *Coro__State; 261typedef struct coro *Coro__State;
267typedef struct coro *Coro__State_or_hashref; 262typedef struct coro *Coro__State_or_hashref;
263
264/* the following variables are effectively part of the perl context */
265/* and get copied between struct coro and these variables */
266/* the mainr easonw e don't support windows process emulation */
267static struct CoroSLF slf_frame; /* the current slf frame */
268static SV *coro_throw;
268 269
269/** Coro ********************************************************************/ 270/** Coro ********************************************************************/
270 271
271#define PRIO_MAX 3 272#define PRIO_MAX 3
272#define PRIO_HIGH 1 273#define PRIO_HIGH 1
… …
276#define PRIO_MIN -4 277#define PRIO_MIN -4
277 278
278/* for Coro.pm */ 279/* for Coro.pm */
279static SV *coro_current; 280static SV *coro_current;
280static SV *coro_readyhook; 281static SV *coro_readyhook;
281static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 282static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
282static int coro_nready;
283static struct coro *coro_first; 283static struct coro *coro_first;
284#define coro_nready coroapi.nready
284 285
285/** lowlevel stuff **********************************************************/ 286/** lowlevel stuff **********************************************************/
286 287
287static SV * 288static SV *
288coro_get_sv (pTHX_ const char *name, int create) 289coro_get_sv (pTHX_ const char *name, int create)
… …
373 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 374 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
374 375
375 return 0; 376 return 0;
376} 377}
377 378
378#define CORO_MAGIC_type_cv PERL_MAGIC_ext 379#define CORO_MAGIC_type_cv 26
379#define CORO_MAGIC_type_state PERL_MAGIC_ext 380#define CORO_MAGIC_type_state PERL_MAGIC_ext
380 381
381static MGVTBL coro_cv_vtbl = { 382static MGVTBL coro_cv_vtbl = {
382 0, 0, 0, 0, 383 0, 0, 0, 0,
383 coro_cv_free 384 coro_cv_free
384}; 385};
385 386
387#define CORO_MAGIC_NN(sv, type) \
388 (expect_true (SvMAGIC (sv)->mg_type == type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type))
391
386#define CORO_MAGIC(sv,type) \ 392#define CORO_MAGIC(sv, type) \
387 SvMAGIC (sv) \ 393 (expect_true (SvMAGIC (sv)) \
388 ? SvMAGIC (sv)->mg_type == type \ 394 ? CORO_MAGIC_NN (sv, type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type) \
391 : 0 395 : 0)
392 396
393#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
394#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 398#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
395 399
396static struct coro * 400INLINE struct coro *
397SvSTATE_ (pTHX_ SV *coro) 401SvSTATE_ (pTHX_ SV *coro)
398{ 402{
399 HV *stash; 403 HV *stash;
400 MAGIC *mg; 404 MAGIC *mg;
401 405
… …
416 mg = CORO_MAGIC_state (coro); 420 mg = CORO_MAGIC_state (coro);
417 return (struct coro *)mg->mg_ptr; 421 return (struct coro *)mg->mg_ptr;
418} 422}
419 423
420#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
425
426/* faster than SvSTATE, but expects a coroutine hv */
427#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
428#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
421 429
422/* the next two functions merely cache the padlists */ 430/* the next two functions merely cache the padlists */
423static void 431static void
424get_padlist (pTHX_ CV *cv) 432get_padlist (pTHX_ CV *cv)
425{ 433{
… …
492 CvPADLIST (cv) = (AV *)POPs; 500 CvPADLIST (cv) = (AV *)POPs;
493 } 501 }
494 502
495 PUTBACK; 503 PUTBACK;
496 } 504 }
505
506 slf_frame = c->slf_frame;
507 coro_throw = c->throw;
497} 508}
498 509
499static void 510static void
500save_perl (pTHX_ Coro__State c) 511save_perl (pTHX_ Coro__State c)
501{ 512{
513 c->throw = coro_throw;
514 c->slf_frame = slf_frame;
515
502 { 516 {
503 dSP; 517 dSP;
504 I32 cxix = cxstack_ix; 518 I32 cxix = cxstack_ix;
505 PERL_CONTEXT *ccstk = cxstack; 519 PERL_CONTEXT *ccstk = cxstack;
506 PERL_SI *top_si = PL_curstackinfo; 520 PERL_SI *top_si = PL_curstackinfo;
… …
573 #undef VAR 587 #undef VAR
574 } 588 }
575} 589}
576 590
577/* 591/*
578 * allocate various perl stacks. This is an exact copy 592 * allocate various perl stacks. This is almost an exact copy
579 * of perl.c:init_stacks, except that it uses less memory 593 * of perl.c:init_stacks, except that it uses less memory
580 * on the (sometimes correct) assumption that coroutines do 594 * on the (sometimes correct) assumption that coroutines do
581 * not usually need a lot of stackspace. 595 * not usually need a lot of stackspace.
582 */ 596 */
583#if CORO_PREFER_PERL_FUNCTIONS 597#if CORO_PREFER_PERL_FUNCTIONS
… …
626 640
627/* 641/*
628 * destroy the stacks, the callchain etc... 642 * destroy the stacks, the callchain etc...
629 */ 643 */
630static void 644static void
631coro_destroy_stacks (pTHX) 645coro_destruct_stacks (pTHX)
632{ 646{
633 while (PL_curstackinfo->si_next) 647 while (PL_curstackinfo->si_next)
634 PL_curstackinfo = PL_curstackinfo->si_next; 648 PL_curstackinfo = PL_curstackinfo->si_next;
635 649
636 while (PL_curstackinfo) 650 while (PL_curstackinfo)
… …
785 799
786 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 800 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
787} 801}
788 802
789static void 803static void
804prepare_nop (pTHX_ struct coro_transfer_args *ta)
805{
806 /* kind of mega-hacky, but works */
807 ta->next = ta->prev = (struct coro *)ta;
808}
809
810static int
811slf_check_nop (pTHX_ struct CoroSLF *frame)
812{
813 return 0;
814}
815
816static void NOINLINE /* noinline to keep it out of the transfer fast path */
790coro_setup (pTHX_ struct coro *coro) 817coro_setup (pTHX_ struct coro *coro)
791{ 818{
792 /* 819 /*
793 * emulate part of the perl startup here. 820 * emulate part of the perl startup here.
794 */ 821 */
… …
818 PL_rs = newSVsv (GvSV (irsgv)); 845 PL_rs = newSVsv (GvSV (irsgv));
819 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 846 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
820 847
821 { 848 {
822 dSP; 849 dSP;
823 LOGOP myop; 850 UNOP myop;
824 851
825 Zero (&myop, 1, LOGOP); 852 Zero (&myop, 1, UNOP);
826 myop.op_next = Nullop; 853 myop.op_next = Nullop;
827 myop.op_flags = OPf_WANT_VOID; 854 myop.op_flags = OPf_WANT_VOID;
828 855
829 PUSHMARK (SP); 856 PUSHMARK (SP);
830 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 857 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
833 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 860 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
834 SPAGAIN; 861 SPAGAIN;
835 } 862 }
836 863
837 /* this newly created coroutine might be run on an existing cctx which most 864 /* this newly created coroutine might be run on an existing cctx which most
838 * likely was suspended in set_stacklevel, called from entersub. 865 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
839 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
840 * so we ENTER here for symmetry
841 */ 866 */
842 ENTER; 867 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
843} 868 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
844 869
870 coro_throw = coro->throw;
871}
872
845static void 873static void
846coro_destroy (pTHX_ struct coro *coro) 874coro_destruct (pTHX_ struct coro *coro)
847{ 875{
848 if (!IN_DESTRUCT) 876 if (!IN_DESTRUCT)
849 { 877 {
850 /* restore all saved variables and stuff */ 878 /* restore all saved variables and stuff */
851 LEAVE_SCOPE (0); 879 LEAVE_SCOPE (0);
… …
871 899
872 SvREFCNT_dec (PL_diehook); 900 SvREFCNT_dec (PL_diehook);
873 SvREFCNT_dec (PL_warnhook); 901 SvREFCNT_dec (PL_warnhook);
874 902
875 SvREFCNT_dec (coro->saved_deffh); 903 SvREFCNT_dec (coro->saved_deffh);
876 SvREFCNT_dec (coro->throw); 904 SvREFCNT_dec (coro_throw);
877 905
878 coro_destroy_stacks (aTHX); 906 coro_destruct_stacks (aTHX);
879} 907}
880 908
881static void 909INLINE void
882free_coro_mortal (pTHX) 910free_coro_mortal (pTHX)
883{ 911{
884 if (expect_true (coro_mortal)) 912 if (expect_true (coro_mortal))
885 { 913 {
886 SvREFCNT_dec (coro_mortal); 914 SvREFCNT_dec (coro_mortal);
… …
891static int 919static int
892runops_trace (pTHX) 920runops_trace (pTHX)
893{ 921{
894 COP *oldcop = 0; 922 COP *oldcop = 0;
895 int oldcxix = -2; 923 int oldcxix = -2;
896 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 924 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
897 coro_cctx *cctx = coro->cctx; 925 coro_cctx *cctx = coro->cctx;
898 926
899 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 927 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
900 { 928 {
901 PERL_ASYNC_CHECK (); 929 PERL_ASYNC_CHECK ();
… …
1010 1038
1011 TAINT_NOT; 1039 TAINT_NOT;
1012 return 0; 1040 return 0;
1013} 1041}
1014 1042
1043static void
1044prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1045{
1046 ta->prev = (struct coro *)cctx;
1047 ta->next = 0;
1048}
1049
1015/* inject a fake call to Coro::State::_cctx_init into the execution */ 1050/* inject a fake call to Coro::State::_cctx_init into the execution */
1016/* _cctx_init should be careful, as it could be called at almost any time */ 1051/* _cctx_init should be careful, as it could be called at almost any time */
1017/* during execution of a perl program */ 1052/* during execution of a perl program */
1053/* also initialises PL_top_env */
1018static void NOINLINE 1054static void NOINLINE
1019cctx_prepare (pTHX_ coro_cctx *cctx) 1055cctx_prepare (pTHX_ coro_cctx *cctx)
1020{ 1056{
1021 dSP; 1057 dSP;
1022 LOGOP myop; 1058 UNOP myop;
1023 1059
1024 PL_top_env = &PL_start_env; 1060 PL_top_env = &PL_start_env;
1025 1061
1026 if (cctx->flags & CC_TRACE) 1062 if (cctx->flags & CC_TRACE)
1027 PL_runops = runops_trace; 1063 PL_runops = runops_trace;
1028 1064
1029 Zero (&myop, 1, LOGOP); 1065 Zero (&myop, 1, UNOP);
1030 myop.op_next = PL_op; 1066 myop.op_next = PL_op;
1031 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1067 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
1032 1068
1033 PUSHMARK (SP); 1069 PUSHMARK (SP);
1034 EXTEND (SP, 2); 1070 EXTEND (SP, 2);
1035 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1071 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
1036 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1072 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1037 PUTBACK; 1073 PUTBACK;
1038 PL_op = (OP *)&myop; 1074 PL_op = (OP *)&myop;
1039 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1075 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1040 SPAGAIN; 1076 SPAGAIN;
1041} 1077}
1042 1078
1079/* the tail of transfer: execute stuff we can only do after a transfer */
1080INLINE void
1081transfer_tail (pTHX)
1082{
1083 free_coro_mortal (aTHX);
1084}
1085
1043/* 1086/*
1044 * this is a _very_ stripped down perl interpreter ;) 1087 * this is a _very_ stripped down perl interpreter ;)
1045 */ 1088 */
1046static void 1089static void
1047cctx_run (void *arg) 1090cctx_run (void *arg)
1048{ 1091{
1092#ifdef USE_ITHREADS
1093# if CORO_PTHREAD
1094 PERL_SET_CONTEXT (coro_thx);
1095# endif
1096#endif
1097 {
1049 dTHX; 1098 dTHX;
1050 1099
1051 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1100 /* normally we would need to skip the entersub here */
1052 UNLOCK; 1101 /* not doing so will re-execute it, which is exactly what we want */
1053
1054 /* we now skip the entersub that lead to transfer() */
1055 PL_op = PL_op->op_next; 1102 /* PL_nop = PL_nop->op_next */
1056 1103
1057 /* inject a fake subroutine call to cctx_init */ 1104 /* inject a fake subroutine call to cctx_init */
1058 cctx_prepare (aTHX_ (coro_cctx *)arg); 1105 cctx_prepare (aTHX_ (coro_cctx *)arg);
1059 1106
1107 /* cctx_run is the alternative tail of transfer() */
1108 transfer_tail (aTHX);
1109
1060 /* somebody or something will hit me for both perl_run and PL_restartop */ 1110 /* somebody or something will hit me for both perl_run and PL_restartop */
1061 PL_restartop = PL_op; 1111 PL_restartop = PL_op;
1062 perl_run (PL_curinterp); 1112 perl_run (PL_curinterp);
1063 1113
1064 /* 1114 /*
1065 * If perl-run returns we assume exit() was being called or the coro 1115 * If perl-run returns we assume exit() was being called or the coro
1066 * fell off the end, which seems to be the only valid (non-bug) 1116 * fell off the end, which seems to be the only valid (non-bug)
1067 * reason for perl_run to return. We try to exit by jumping to the 1117 * reason for perl_run to return. We try to exit by jumping to the
1068 * bootstrap-time "top" top_env, as we cannot restore the "main" 1118 * bootstrap-time "top" top_env, as we cannot restore the "main"
1069 * coroutine as Coro has no such concept 1119 * coroutine as Coro has no such concept
1070 */ 1120 */
1071 PL_top_env = main_top_env; 1121 PL_top_env = main_top_env;
1072 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1122 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1123 }
1073} 1124}
1074 1125
1075static coro_cctx * 1126static coro_cctx *
1076cctx_new () 1127cctx_new ()
1077{ 1128{
1078 coro_cctx *cctx; 1129 coro_cctx *cctx;
1130
1131 ++cctx_count;
1132 New (0, cctx, 1, coro_cctx);
1133
1134 cctx->gen = cctx_gen;
1135 cctx->flags = 0;
1136 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1137
1138 return cctx;
1139}
1140
1141/* create a new cctx only suitable as source */
1142static coro_cctx *
1143cctx_new_empty ()
1144{
1145 coro_cctx *cctx = cctx_new ();
1146
1147 cctx->sptr = 0;
1148 coro_create (&cctx->cctx, 0, 0, 0, 0);
1149
1150 return cctx;
1151}
1152
1153/* create a new cctx suitable as destination/running a perl interpreter */
1154static coro_cctx *
1155cctx_new_run ()
1156{
1157 coro_cctx *cctx = cctx_new ();
1079 void *stack_start; 1158 void *stack_start;
1080 size_t stack_size; 1159 size_t stack_size;
1081 1160
1082 ++cctx_count;
1083
1084 Newz (0, cctx, 1, coro_cctx);
1085
1086#if HAVE_MMAP 1161#if HAVE_MMAP
1087 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1162 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1088 /* mmap supposedly does allocate-on-write for us */ 1163 /* mmap supposedly does allocate-on-write for us */
1089 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1164 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1090 1165
1091 if (cctx->sptr != (void *)-1) 1166 if (cctx->sptr != (void *)-1)
1092 { 1167 {
1093# if CORO_STACKGUARD 1168 #if CORO_STACKGUARD
1094 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1169 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1095# endif 1170 #endif
1096 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1171 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1097 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1172 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1098 cctx->flags |= CC_MAPPED; 1173 cctx->flags |= CC_MAPPED;
1099 } 1174 }
1100 else 1175 else
1101#endif 1176#endif
1102 { 1177 {
1103 cctx->ssize = coro_stacksize * (long)sizeof (long); 1178 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1104 New (0, cctx->sptr, coro_stacksize, long); 1179 New (0, cctx->sptr, cctx_stacksize, long);
1105 1180
1106 if (!cctx->sptr) 1181 if (!cctx->sptr)
1107 { 1182 {
1108 perror ("FATAL: unable to allocate stack for coroutine"); 1183 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1109 _exit (EXIT_FAILURE); 1184 _exit (EXIT_FAILURE);
1110 } 1185 }
1111 1186
1112 stack_start = cctx->sptr; 1187 stack_start = cctx->sptr;
1113 stack_size = cctx->ssize; 1188 stack_size = cctx->ssize;
1114 } 1189 }
1115 1190
1116 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1191 #if CORO_USE_VALGRIND
1192 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1193 #endif
1194
1117 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1195 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1118 1196
1119 return cctx; 1197 return cctx;
1120} 1198}
1121 1199
… …
1124{ 1202{
1125 if (!cctx) 1203 if (!cctx)
1126 return; 1204 return;
1127 1205
1128 --cctx_count; 1206 --cctx_count;
1207 coro_destroy (&cctx->cctx);
1129 1208
1209 /* coro_transfer creates new, empty cctx's */
1210 if (cctx->sptr)
1211 {
1130#if CORO_USE_VALGRIND 1212 #if CORO_USE_VALGRIND
1131 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1213 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1132#endif 1214 #endif
1133 1215
1134#if HAVE_MMAP 1216#if HAVE_MMAP
1135 if (cctx->flags & CC_MAPPED) 1217 if (cctx->flags & CC_MAPPED)
1136 munmap (cctx->sptr, cctx->ssize); 1218 munmap (cctx->sptr, cctx->ssize);
1137 else 1219 else
1138#endif 1220#endif
1139 Safefree (cctx->sptr); 1221 Safefree (cctx->sptr);
1222 }
1140 1223
1141 Safefree (cctx); 1224 Safefree (cctx);
1142} 1225}
1143 1226
1144/* wether this cctx should be destructed */ 1227/* wether this cctx should be destructed */
1145#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1228#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1146 1229
1147static coro_cctx * 1230static coro_cctx *
1148cctx_get (pTHX) 1231cctx_get (pTHX)
1149{ 1232{
1150 while (expect_true (cctx_first)) 1233 while (expect_true (cctx_first))
… …
1157 return cctx; 1240 return cctx;
1158 1241
1159 cctx_destroy (cctx); 1242 cctx_destroy (cctx);
1160 } 1243 }
1161 1244
1162 return cctx_new (); 1245 return cctx_new_run ();
1163} 1246}
1164 1247
1165static void 1248static void
1166cctx_put (coro_cctx *cctx) 1249cctx_put (coro_cctx *cctx)
1167{ 1250{
1251 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1252
1168 /* free another cctx if overlimit */ 1253 /* free another cctx if overlimit */
1169 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1254 if (expect_false (cctx_idle >= cctx_max_idle))
1170 { 1255 {
1171 coro_cctx *first = cctx_first; 1256 coro_cctx *first = cctx_first;
1172 cctx_first = first->next; 1257 cctx_first = first->next;
1173 --cctx_idle; 1258 --cctx_idle;
1174 1259
… …
1183/** coroutine switching *****************************************************/ 1268/** coroutine switching *****************************************************/
1184 1269
1185static void 1270static void
1186transfer_check (pTHX_ struct coro *prev, struct coro *next) 1271transfer_check (pTHX_ struct coro *prev, struct coro *next)
1187{ 1272{
1273 /* TODO: throwing up here is considered harmful */
1274
1188 if (expect_true (prev != next)) 1275 if (expect_true (prev != next))
1189 { 1276 {
1190 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1277 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1191 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1278 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1192 1279
1193 if (expect_false (next->flags & CF_RUNNING)) 1280 if (expect_false (next->flags & CF_RUNNING))
1194 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1281 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1195 1282
1196 if (expect_false (next->flags & CF_DESTROYED)) 1283 if (expect_false (next->flags & CF_DESTROYED))
1197 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1284 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1198 1285
1199#if !PERL_VERSION_ATLEAST (5,10,0) 1286#if !PERL_VERSION_ATLEAST (5,10,0)
1200 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1287 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1201 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1288 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1202#endif 1289#endif
1203 } 1290 }
1204} 1291}
1205 1292
1206/* always use the TRANSFER macro */ 1293/* always use the TRANSFER macro */
1207static void NOINLINE 1294static void NOINLINE /* noinline so we have a fixed stackframe */
1208transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1295transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1209{ 1296{
1210 dSTACKLEVEL; 1297 dSTACKLEVEL;
1211 static volatile int has_throw;
1212 1298
1213 /* sometimes transfer is only called to set idle_sp */ 1299 /* sometimes transfer is only called to set idle_sp */
1214 if (expect_false (!next)) 1300 if (expect_false (!next))
1215 { 1301 {
1216 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1302 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1217 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1303 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1218 } 1304 }
1219 else if (expect_true (prev != next)) 1305 else if (expect_true (prev != next))
1220 { 1306 {
1221 coro_cctx *prev__cctx; 1307 coro_cctx *prev__cctx;
1222 1308
1223 if (expect_false (prev->flags & CF_NEW)) 1309 if (expect_false (prev->flags & CF_NEW))
1224 { 1310 {
1225 /* create a new empty context */ 1311 /* create a new empty/source context */
1226 Newz (0, prev->cctx, 1, coro_cctx); 1312 prev->cctx = cctx_new_empty ();
1227 prev->flags &= ~CF_NEW; 1313 prev->flags &= ~CF_NEW;
1228 prev->flags |= CF_RUNNING; 1314 prev->flags |= CF_RUNNING;
1229 } 1315 }
1230 1316
1231 prev->flags &= ~CF_RUNNING; 1317 prev->flags &= ~CF_RUNNING;
1232 next->flags |= CF_RUNNING; 1318 next->flags |= CF_RUNNING;
1233
1234 LOCK;
1235 1319
1236 /* first get rid of the old state */ 1320 /* first get rid of the old state */
1237 save_perl (aTHX_ prev); 1321 save_perl (aTHX_ prev);
1238 1322
1239 if (expect_false (next->flags & CF_NEW)) 1323 if (expect_false (next->flags & CF_NEW))
… …
1246 else 1330 else
1247 load_perl (aTHX_ next); 1331 load_perl (aTHX_ next);
1248 1332
1249 prev__cctx = prev->cctx; 1333 prev__cctx = prev->cctx;
1250 1334
1251 /* possibly "free" the cctx */ 1335 /* possibly untie and reuse the cctx */
1252 if (expect_true ( 1336 if (expect_true (
1253 prev__cctx->idle_sp == STACKLEVEL 1337 prev__cctx->idle_sp == (void *)stacklevel
1254 && !(prev__cctx->flags & CC_TRACE) 1338 && !(prev__cctx->flags & CC_TRACE)
1255 && !force_cctx 1339 && !force_cctx
1256 )) 1340 ))
1257 { 1341 {
1258 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1342 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1259 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1343 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1260 1344
1261 prev->cctx = 0; 1345 prev->cctx = 0;
1262 1346
1263 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1347 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1264 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1348 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1271 1355
1272 ++next->usecount; 1356 ++next->usecount;
1273 1357
1274 if (expect_true (!next->cctx)) 1358 if (expect_true (!next->cctx))
1275 next->cctx = cctx_get (aTHX); 1359 next->cctx = cctx_get (aTHX);
1276
1277 has_throw = !!next->throw;
1278 1360
1279 if (expect_false (prev__cctx != next->cctx)) 1361 if (expect_false (prev__cctx != next->cctx))
1280 { 1362 {
1281 prev__cctx->top_env = PL_top_env; 1363 prev__cctx->top_env = PL_top_env;
1282 PL_top_env = next->cctx->top_env; 1364 PL_top_env = next->cctx->top_env;
1283 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1365 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1284 } 1366 }
1285 1367
1286 free_coro_mortal (aTHX); 1368 transfer_tail (aTHX);
1287 UNLOCK;
1288
1289 if (expect_false (has_throw))
1290 {
1291 struct coro *coro = SvSTATE (coro_current);
1292
1293 if (coro->throw)
1294 {
1295 SV *exception = coro->throw;
1296 coro->throw = 0;
1297 sv_setsv (ERRSV, exception);
1298 croak (0);
1299 }
1300 }
1301 } 1369 }
1302} 1370}
1303
1304struct transfer_args
1305{
1306 struct coro *prev, *next;
1307};
1308 1371
1309#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1372#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1310#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1373#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1311 1374
1312/** high level stuff ********************************************************/ 1375/** high level stuff ********************************************************/
… …
1314static int 1377static int
1315coro_state_destroy (pTHX_ struct coro *coro) 1378coro_state_destroy (pTHX_ struct coro *coro)
1316{ 1379{
1317 if (coro->flags & CF_DESTROYED) 1380 if (coro->flags & CF_DESTROYED)
1318 return 0; 1381 return 0;
1382
1383 if (coro->on_destroy)
1384 coro->on_destroy (aTHX_ coro);
1319 1385
1320 coro->flags |= CF_DESTROYED; 1386 coro->flags |= CF_DESTROYED;
1321 1387
1322 if (coro->flags & CF_READY) 1388 if (coro->flags & CF_READY)
1323 { 1389 {
1324 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1390 /* reduce nready, as destroying a ready coro effectively unreadies it */
1325 /* alternative: look through all ready queues and remove the coro */ 1391 /* alternative: look through all ready queues and remove the coro */
1326 LOCK;
1327 --coro_nready; 1392 --coro_nready;
1328 UNLOCK;
1329 } 1393 }
1330 else 1394 else
1331 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1395 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1332 1396
1333 if (coro->mainstack && coro->mainstack != main_mainstack) 1397 if (coro->mainstack && coro->mainstack != main_mainstack)
1334 { 1398 {
1335 struct coro temp; 1399 struct coro temp;
1336 1400
1337 if (coro->flags & CF_RUNNING) 1401 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1338 croak ("FATAL: tried to destroy currently running coroutine");
1339 1402
1340 save_perl (aTHX_ &temp); 1403 save_perl (aTHX_ &temp);
1341 load_perl (aTHX_ coro); 1404 load_perl (aTHX_ coro);
1342 1405
1343 coro_destroy (aTHX_ coro); 1406 coro_destruct (aTHX_ coro);
1344 1407
1345 load_perl (aTHX_ &temp); 1408 load_perl (aTHX_ &temp);
1346 1409
1347 coro->slot = 0; 1410 coro->slot = 0;
1348 } 1411 }
… …
1394# define MGf_DUP 0 1457# define MGf_DUP 0
1395#endif 1458#endif
1396}; 1459};
1397 1460
1398static void 1461static void
1399prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1462prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1400{ 1463{
1401 ta->prev = SvSTATE (prev_sv); 1464 ta->prev = SvSTATE (prev_sv);
1402 ta->next = SvSTATE (next_sv); 1465 ta->next = SvSTATE (next_sv);
1403 TRANSFER_CHECK (*ta); 1466 TRANSFER_CHECK (*ta);
1404} 1467}
1405 1468
1406static void 1469static void
1407api_transfer (SV *prev_sv, SV *next_sv) 1470api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1408{ 1471{
1409 dTHX;
1410 struct transfer_args ta; 1472 struct coro_transfer_args ta;
1411 1473
1412 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1474 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1413 TRANSFER (ta, 1); 1475 TRANSFER (ta, 1);
1414} 1476}
1415 1477
1416/** Coro ********************************************************************/ 1478/** Coro ********************************************************************/
1417 1479
1418static void 1480INLINE void
1419coro_enq (pTHX_ SV *coro_sv) 1481coro_enq (pTHX_ struct coro *coro)
1420{ 1482{
1421 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1483 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1422} 1484}
1423 1485
1424static SV * 1486INLINE SV *
1425coro_deq (pTHX) 1487coro_deq (pTHX)
1426{ 1488{
1427 int prio; 1489 int prio;
1428 1490
1429 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1491 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1432 1494
1433 return 0; 1495 return 0;
1434} 1496}
1435 1497
1436static int 1498static int
1437api_ready (SV *coro_sv) 1499api_ready (pTHX_ SV *coro_sv)
1438{ 1500{
1439 dTHX;
1440 struct coro *coro; 1501 struct coro *coro;
1441 SV *sv_hook; 1502 SV *sv_hook;
1442 void (*xs_hook)(void); 1503 void (*xs_hook)(void);
1443 1504
1444 if (SvROK (coro_sv)) 1505 if (SvROK (coro_sv))
… …
1449 if (coro->flags & CF_READY) 1510 if (coro->flags & CF_READY)
1450 return 0; 1511 return 0;
1451 1512
1452 coro->flags |= CF_READY; 1513 coro->flags |= CF_READY;
1453 1514
1454 LOCK;
1455
1456 sv_hook = coro_nready ? 0 : coro_readyhook; 1515 sv_hook = coro_nready ? 0 : coro_readyhook;
1457 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1516 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1458 1517
1459 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1518 coro_enq (aTHX_ coro);
1460 ++coro_nready; 1519 ++coro_nready;
1461 1520
1462 UNLOCK;
1463
1464 if (sv_hook) 1521 if (sv_hook)
1465 { 1522 {
1466 dSP; 1523 dSP;
1467 1524
1468 ENTER; 1525 ENTER;
… …
1482 1539
1483 return 1; 1540 return 1;
1484} 1541}
1485 1542
1486static int 1543static int
1487api_is_ready (SV *coro_sv) 1544api_is_ready (pTHX_ SV *coro_sv)
1488{ 1545{
1489 dTHX;
1490 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1546 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1491} 1547}
1492 1548
1493static void 1549INLINE void
1494prepare_schedule (pTHX_ struct transfer_args *ta) 1550prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1495{ 1551{
1496 SV *prev_sv, *next_sv; 1552 SV *prev_sv, *next_sv;
1497 1553
1498 for (;;) 1554 for (;;)
1499 { 1555 {
1500 LOCK;
1501 next_sv = coro_deq (aTHX); 1556 next_sv = coro_deq (aTHX);
1502 1557
1503 /* nothing to schedule: call the idle handler */ 1558 /* nothing to schedule: call the idle handler */
1504 if (expect_false (!next_sv)) 1559 if (expect_false (!next_sv))
1505 { 1560 {
1506 dSP; 1561 dSP;
1507 UNLOCK;
1508 1562
1509 ENTER; 1563 ENTER;
1510 SAVETMPS; 1564 SAVETMPS;
1511 1565
1512 PUSHMARK (SP); 1566 PUSHMARK (SP);
… …
1517 FREETMPS; 1571 FREETMPS;
1518 LEAVE; 1572 LEAVE;
1519 continue; 1573 continue;
1520 } 1574 }
1521 1575
1522 ta->next = SvSTATE (next_sv); 1576 ta->next = SvSTATE_hv (next_sv);
1523 1577
1524 /* cannot transfer to destroyed coros, skip and look for next */ 1578 /* cannot transfer to destroyed coros, skip and look for next */
1525 if (expect_false (ta->next->flags & CF_DESTROYED)) 1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1526 { 1580 {
1527 UNLOCK;
1528 SvREFCNT_dec (next_sv); 1581 SvREFCNT_dec (next_sv);
1529 /* coro_nready is already taken care of by destroy */ 1582 /* coro_nready has already been taken care of by destroy */
1530 continue; 1583 continue;
1531 } 1584 }
1532 1585
1533 --coro_nready; 1586 --coro_nready;
1534 UNLOCK;
1535 break; 1587 break;
1536 } 1588 }
1537 1589
1538 /* free this only after the transfer */ 1590 /* free this only after the transfer */
1539 prev_sv = SvRV (coro_current); 1591 prev_sv = SvRV (coro_current);
1540 ta->prev = SvSTATE (prev_sv); 1592 ta->prev = SvSTATE_hv (prev_sv);
1541 TRANSFER_CHECK (*ta); 1593 TRANSFER_CHECK (*ta);
1542 assert (ta->next->flags & CF_READY); 1594 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1543 ta->next->flags &= ~CF_READY; 1595 ta->next->flags &= ~CF_READY;
1544 SvRV_set (coro_current, next_sv); 1596 SvRV_set (coro_current, next_sv);
1545 1597
1546 LOCK;
1547 free_coro_mortal (aTHX); 1598 free_coro_mortal (aTHX);
1548 coro_mortal = prev_sv; 1599 coro_mortal = prev_sv;
1549 UNLOCK;
1550} 1600}
1551 1601
1552static void 1602INLINE void
1553prepare_cede (pTHX_ struct transfer_args *ta) 1603prepare_cede (pTHX_ struct coro_transfer_args *ta)
1554{ 1604{
1555 api_ready (coro_current); 1605 api_ready (aTHX_ coro_current);
1556 prepare_schedule (aTHX_ ta); 1606 prepare_schedule (aTHX_ ta);
1557} 1607}
1558 1608
1609INLINE void
1610prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1611{
1612 SV *prev = SvRV (coro_current);
1613
1614 if (coro_nready)
1615 {
1616 prepare_schedule (aTHX_ ta);
1617 api_ready (aTHX_ prev);
1618 }
1619 else
1620 prepare_nop (aTHX_ ta);
1621}
1622
1623static void
1624api_schedule (pTHX)
1625{
1626 struct coro_transfer_args ta;
1627
1628 prepare_schedule (aTHX_ &ta);
1629 TRANSFER (ta, 1);
1630}
1631
1559static int 1632static int
1560prepare_cede_notself (pTHX_ struct transfer_args *ta) 1633api_cede (pTHX)
1561{ 1634{
1562 if (coro_nready) 1635 struct coro_transfer_args ta;
1563 { 1636
1564 SV *prev = SvRV (coro_current);
1565 prepare_schedule (aTHX_ ta); 1637 prepare_cede (aTHX_ &ta);
1566 api_ready (prev); 1638
1639 if (expect_true (ta.prev != ta.next))
1640 {
1641 TRANSFER (ta, 1);
1567 return 1; 1642 return 1;
1568 } 1643 }
1569 else 1644 else
1570 return 0; 1645 return 0;
1571} 1646}
1572 1647
1573static void
1574api_schedule (void)
1575{
1576 dTHX;
1577 struct transfer_args ta;
1578
1579 prepare_schedule (aTHX_ &ta);
1580 TRANSFER (ta, 1);
1581}
1582
1583static int 1648static int
1584api_cede (void) 1649api_cede_notself (pTHX)
1585{ 1650{
1586 dTHX; 1651 if (coro_nready)
1652 {
1587 struct transfer_args ta; 1653 struct coro_transfer_args ta;
1588 1654
1589 prepare_cede (aTHX_ &ta); 1655 prepare_cede_notself (aTHX_ &ta);
1590
1591 if (expect_true (ta.prev != ta.next))
1592 {
1593 TRANSFER (ta, 1); 1656 TRANSFER (ta, 1);
1594 return 1; 1657 return 1;
1595 } 1658 }
1596 else 1659 else
1597 return 0; 1660 return 0;
1598} 1661}
1599 1662
1600static int 1663static void
1601api_cede_notself (void)
1602{
1603 dTHX;
1604 struct transfer_args ta;
1605
1606 if (prepare_cede_notself (aTHX_ &ta))
1607 {
1608 TRANSFER (ta, 1);
1609 return 1;
1610 }
1611 else
1612 return 0;
1613}
1614
1615static void
1616api_trace (SV *coro_sv, int flags) 1664api_trace (pTHX_ SV *coro_sv, int flags)
1617{ 1665{
1618 dTHX;
1619 struct coro *coro = SvSTATE (coro_sv); 1666 struct coro *coro = SvSTATE (coro_sv);
1620 1667
1621 if (flags & CC_TRACE) 1668 if (flags & CC_TRACE)
1622 { 1669 {
1623 if (!coro->cctx) 1670 if (!coro->cctx)
1624 coro->cctx = cctx_new (); 1671 coro->cctx = cctx_new_run ();
1625 else if (!(coro->cctx->flags & CC_TRACE)) 1672 else if (!(coro->cctx->flags & CC_TRACE))
1626 croak ("cannot enable tracing on coroutine with custom stack"); 1673 croak ("cannot enable tracing on coroutine with custom stack,");
1627 1674
1628 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1675 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1629 } 1676 }
1630 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1677 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1631 { 1678 {
… …
1636 else 1683 else
1637 coro->slot->runops = RUNOPS_DEFAULT; 1684 coro->slot->runops = RUNOPS_DEFAULT;
1638 } 1685 }
1639} 1686}
1640 1687
1688/*****************************************************************************/
1689/* schedule-like-function opcode (SLF) */
1690
1691static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1692static const CV *slf_cv;
1693static SV **slf_argv;
1694static int slf_argc, slf_arga; /* count, allocated */
1695static I32 slf_ax; /* top of stack, for restore */
1696
1697/* this restores the stack in the case we patched the entersub, to */
1698/* recreate the stack frame as perl will on following calls */
1699/* since entersub cleared the stack */
1700static OP *
1701pp_restore (pTHX)
1702{
1703 int i;
1704 SV **SP = PL_stack_base + slf_ax;
1705
1706 PUSHMARK (SP);
1707
1708 EXTEND (SP, slf_argc + 1);
1709
1710 for (i = 0; i < slf_argc; ++i)
1711 PUSHs (sv_2mortal (slf_argv [i]));
1712
1713 PUSHs ((SV *)CvGV (slf_cv));
1714
1715 RETURNOP (slf_restore.op_first);
1716}
1717
1641static int 1718static void
1642coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1719slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1643{ 1720{
1644 AV *padlist; 1721 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1645 AV *av = (AV *)mg->mg_obj;
1646
1647 abort ();
1648
1649 return 0;
1650} 1722}
1651 1723
1652static MGVTBL coro_gensub_vtbl = { 1724static void
1653 0, 0, 0, 0, 1725slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1654 coro_gensub_free 1726{
1655}; 1727 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1728
1729 frame->prepare = slf_prepare_set_stacklevel;
1730 frame->check = slf_check_nop;
1731 frame->data = (void *)SvIV (arg [0]);
1732}
1733
1734static void
1735slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1736{
1737 SV **arg = (SV **)slf_frame.data;
1738
1739 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1740}
1741
1742static void
1743slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1744{
1745 if (items != 2)
1746 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1747
1748 frame->prepare = slf_prepare_transfer;
1749 frame->check = slf_check_nop;
1750 frame->data = (void *)arg; /* let's hope it will stay valid */
1751}
1752
1753static void
1754slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1755{
1756 frame->prepare = prepare_schedule;
1757 frame->check = slf_check_nop;
1758}
1759
1760static void
1761slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1762{
1763 frame->prepare = prepare_cede;
1764 frame->check = slf_check_nop;
1765}
1766
1767static void
1768slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1769{
1770 frame->prepare = prepare_cede_notself;
1771 frame->check = slf_check_nop;
1772}
1773
1774/* we hijack an hopefully unused CV flag for our purposes */
1775#define CVf_SLF 0x4000
1776
1777/*
1778 * these not obviously related functions are all rolled into one
1779 * function to increase chances that they all will call transfer with the same
1780 * stack offset
1781 * SLF stands for "schedule-like-function".
1782 */
1783static OP *
1784pp_slf (pTHX)
1785{
1786 I32 checkmark; /* mark SP to see how many elements check has pushed */
1787
1788 /* set up the slf frame, unless it has already been set-up */
1789 /* the latter happens when a new coro has been started */
1790 /* or when a new cctx was attached to an existing coroutine */
1791 if (expect_true (!slf_frame.prepare))
1792 {
1793 /* first iteration */
1794 dSP;
1795 SV **arg = PL_stack_base + TOPMARK + 1;
1796 int items = SP - arg; /* args without function object */
1797 SV *gv = *sp;
1798
1799 /* do a quick consistency check on the "function" object, and if it isn't */
1800 /* for us, divert to the real entersub */
1801 if (SvTYPE (gv) != SVt_PVGV
1802 || !GvCV (gv)
1803 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1804 return PL_ppaddr[OP_ENTERSUB](aTHX);
1805
1806 if (!(PL_op->op_flags & OPf_STACKED))
1807 {
1808 /* ampersand-form of call, use @_ instead of stack */
1809 AV *av = GvAV (PL_defgv);
1810 arg = AvARRAY (av);
1811 items = AvFILLp (av) + 1;
1812 }
1813
1814 /* now call the init function, which needs to set up slf_frame */
1815 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1816 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1817
1818 /* pop args */
1819 SP = PL_stack_base + POPMARK;
1820
1821 PUTBACK;
1822 }
1823
1824 /* now that we have a slf_frame, interpret it! */
1825 /* we use a callback system not to make the code needlessly */
1826 /* complicated, but so we can run multiple perl coros from one cctx */
1827
1828 do
1829 {
1830 struct coro_transfer_args ta;
1831
1832 slf_frame.prepare (aTHX_ &ta);
1833 TRANSFER (ta, 0);
1834
1835 checkmark = PL_stack_sp - PL_stack_base;
1836 }
1837 while (slf_frame.check (aTHX_ &slf_frame));
1838
1839 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1840
1841 /* return value handling - mostly like entersub */
1842 {
1843 dSP;
1844 SV **bot = PL_stack_base + checkmark;
1845 int gimme = GIMME_V;
1846
1847 /* make sure we put something on the stack in scalar context */
1848 if (gimme == G_SCALAR)
1849 {
1850 if (sp == bot)
1851 XPUSHs (&PL_sv_undef);
1852
1853 SP = bot + 1;
1854 }
1855
1856 PUTBACK;
1857 }
1858
1859 /* exception handling */
1860 if (expect_false (coro_throw))
1861 {
1862 SV *exception = sv_2mortal (coro_throw);
1863
1864 coro_throw = 0;
1865 sv_setsv (ERRSV, exception);
1866 croak (0);
1867 }
1868
1869 return NORMAL;
1870}
1871
1872static void
1873api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1874{
1875 int i;
1876 SV **arg = PL_stack_base + ax;
1877 int items = PL_stack_sp - arg + 1;
1878
1879 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1880
1881 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1882 && PL_op->op_ppaddr != pp_slf)
1883 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1884
1885 CvFLAGS (cv) |= CVf_SLF;
1886 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1887 slf_cv = cv;
1888
1889 /* we patch the op, and then re-run the whole call */
1890 /* we have to put the same argument on the stack for this to work */
1891 /* and this will be done by pp_restore */
1892 slf_restore.op_next = (OP *)&slf_restore;
1893 slf_restore.op_type = OP_CUSTOM;
1894 slf_restore.op_ppaddr = pp_restore;
1895 slf_restore.op_first = PL_op;
1896
1897 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1898
1899 if (PL_op->op_flags & OPf_STACKED)
1900 {
1901 if (items > slf_arga)
1902 {
1903 slf_arga = items;
1904 free (slf_argv);
1905 slf_argv = malloc (slf_arga * sizeof (SV *));
1906 }
1907
1908 slf_argc = items;
1909
1910 for (i = 0; i < items; ++i)
1911 slf_argv [i] = SvREFCNT_inc (arg [i]);
1912 }
1913 else
1914 slf_argc = 0;
1915
1916 PL_op->op_ppaddr = pp_slf;
1917 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1918
1919 PL_op = (OP *)&slf_restore;
1920}
1656 1921
1657/*****************************************************************************/ 1922/*****************************************************************************/
1658/* PerlIO::cede */ 1923/* PerlIO::cede */
1659 1924
1660typedef struct 1925typedef struct
… …
1688 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 1953 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1689 double now = nvtime (); 1954 double now = nvtime ();
1690 1955
1691 if (now >= self->next) 1956 if (now >= self->next)
1692 { 1957 {
1693 api_cede (); 1958 api_cede (aTHX);
1694 self->next = now + self->every; 1959 self->next = now + self->every;
1695 } 1960 }
1696 1961
1697 return PerlIOBuf_flush (aTHX_ f); 1962 return PerlIOBuf_flush (aTHX_ f);
1698} 1963}
… …
1727 PerlIOBuf_get_ptr, 1992 PerlIOBuf_get_ptr,
1728 PerlIOBuf_get_cnt, 1993 PerlIOBuf_get_cnt,
1729 PerlIOBuf_set_ptrcnt, 1994 PerlIOBuf_set_ptrcnt,
1730}; 1995};
1731 1996
1997/*****************************************************************************/
1998/* Coro::Semaphore */
1999
2000static void
2001coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2002{
2003 SV *count_sv = AvARRAY (av)[0];
2004 IV count = SvIVX (count_sv);
2005
2006 count += adjust;
2007 SvIVX (count_sv) = count;
2008
2009 /* now wake up as many waiters as are expected to lock */
2010 while (count > 0 && AvFILLp (av) > 0)
2011 {
2012 SV *cb;
2013
2014 /* swap first two elements so we can shift a waiter */
2015 AvARRAY (av)[0] = AvARRAY (av)[1];
2016 AvARRAY (av)[1] = count_sv;
2017 cb = av_shift (av);
2018
2019 if (SvOBJECT (cb))
2020 api_ready (aTHX_ cb);
2021 else
2022 croak ("callbacks not yet supported");
2023
2024 SvREFCNT_dec (cb);
2025
2026 --count;
2027 }
2028}
2029
2030static void
2031coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2032{
2033 /* call $sem->adjust (0) to possibly wake up some other waiters */
2034 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2035}
2036
2037static int
2038slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2039{
2040 AV *av = (AV *)frame->data;
2041 SV *count_sv = AvARRAY (av)[0];
2042
2043 if (SvIVX (count_sv) > 0)
2044 {
2045 SvSTATE_current->on_destroy = 0;
2046 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2047 return 0;
2048 }
2049 else
2050 {
2051 int i;
2052 /* if we were woken up but can't down, we look through the whole */
2053 /* waiters list and only add us if we aren't in there already */
2054 /* this avoids some degenerate memory usage cases */
2055
2056 for (i = 1; i <= AvFILLp (av); ++i)
2057 if (AvARRAY (av)[i] == SvRV (coro_current))
2058 return 1;
2059
2060 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2061 return 1;
2062 }
2063}
2064
2065static void
2066slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2067{
2068 AV *av = (AV *)SvRV (arg [0]);
2069
2070 if (SvIVX (AvARRAY (av)[0]) > 0)
2071 {
2072 frame->data = (void *)av;
2073 frame->prepare = prepare_nop;
2074 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2075 }
2076 else
2077 {
2078 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2079
2080 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2081 frame->prepare = prepare_schedule;
2082
2083 /* to avoid race conditions when a woken-up coro gets terminated */
2084 /* we arrange for a temporary on_destroy that calls adjust (0) */
2085 assert (!SvSTATE_current->on_destroy);//D
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2087 }
2088
2089 frame->check = slf_check_semaphore_down;
2090
2091}
2092
2093/*****************************************************************************/
2094/* gensub: simple closure generation utility */
2095
2096#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2097
2098/* create a closure from XS, returns a code reference */
2099/* the arg can be accessed via GENSUB_ARG from the callback */
2100/* the callback must use dXSARGS/XSRETURN */
2101static SV *
2102gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2103{
2104 CV *cv = (CV *)newSV (0);
2105
2106 sv_upgrade ((SV *)cv, SVt_PVCV);
2107
2108 CvANON_on (cv);
2109 CvISXSUB_on (cv);
2110 CvXSUB (cv) = xsub;
2111 GENSUB_ARG = arg;
2112
2113 return newRV_noinc ((SV *)cv);
2114}
2115
2116/*****************************************************************************/
2117/* Coro::AIO */
2118
2119#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2120
2121/* helper storage struct */
2122struct io_state
2123{
2124 int errorno;
2125 I32 laststype; /* U16 in 5.10.0 */
2126 int laststatval;
2127 Stat_t statcache;
2128};
2129
2130static void
2131coro_aio_callback (pTHX_ CV *cv)
2132{
2133 dXSARGS;
2134 AV *state = (AV *)GENSUB_ARG;
2135 SV *coro = av_pop (state);
2136 SV *data_sv = newSV (sizeof (struct io_state));
2137
2138 av_extend (state, items);
2139
2140 sv_upgrade (data_sv, SVt_PV);
2141 SvCUR_set (data_sv, sizeof (struct io_state));
2142 SvPOK_only (data_sv);
2143
2144 {
2145 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2146
2147 data->errorno = errno;
2148 data->laststype = PL_laststype;
2149 data->laststatval = PL_laststatval;
2150 data->statcache = PL_statcache;
2151 }
2152
2153 /* now build the result vector out of all the parameters and the data_sv */
2154 {
2155 int i;
2156
2157 for (i = 0; i < items; ++i)
2158 av_push (state, SvREFCNT_inc_NN (ST (i)));
2159 }
2160
2161 av_push (state, data_sv);
2162
2163 api_ready (aTHX_ coro);
2164 SvREFCNT_dec (coro);
2165 SvREFCNT_dec ((AV *)state);
2166}
2167
2168static int
2169slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2170{
2171 AV *state = (AV *)frame->data;
2172
2173 /* one element that is an RV? repeat! */
2174 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2175 return 1;
2176
2177 /* restore status */
2178 {
2179 SV *data_sv = av_pop (state);
2180 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2181
2182 errno = data->errorno;
2183 PL_laststype = data->laststype;
2184 PL_laststatval = data->laststatval;
2185 PL_statcache = data->statcache;
2186
2187 SvREFCNT_dec (data_sv);
2188 }
2189
2190 /* push result values */
2191 {
2192 dSP;
2193 int i;
2194
2195 EXTEND (SP, AvFILLp (state) + 1);
2196 for (i = 0; i <= AvFILLp (state); ++i)
2197 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2198
2199 PUTBACK;
2200 }
2201
2202 return 0;
2203}
2204
2205static void
2206slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2207{
2208 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2209 SV *coro_hv = SvRV (coro_current);
2210 struct coro *coro = SvSTATE_hv (coro_hv);
2211
2212 /* put our coroutine id on the state arg */
2213 av_push (state, SvREFCNT_inc_NN (coro_hv));
2214
2215 /* first see whether we have a non-zero priority and set it as AIO prio */
2216 if (coro->prio)
2217 {
2218 dSP;
2219
2220 static SV *prio_cv;
2221 static SV *prio_sv;
2222
2223 if (expect_false (!prio_cv))
2224 {
2225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2226 prio_sv = newSViv (0);
2227 }
2228
2229 PUSHMARK (SP);
2230 sv_setiv (prio_sv, coro->prio);
2231 XPUSHs (prio_sv);
2232
2233 PUTBACK;
2234 call_sv (prio_cv, G_VOID | G_DISCARD);
2235 }
2236
2237 /* now call the original request */
2238 {
2239 dSP;
2240 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2241 int i;
2242
2243 PUSHMARK (SP);
2244
2245 /* first push all args to the stack */
2246 EXTEND (SP, items + 1);
2247
2248 for (i = 0; i < items; ++i)
2249 PUSHs (arg [i]);
2250
2251 /* now push the callback closure */
2252 PUSHs (sv_2mortal (gensub (coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2253
2254 /* now call the AIO function - we assume our request is uncancelable */
2255 PUTBACK;
2256 call_sv ((SV *)req, G_VOID | G_DISCARD);
2257 }
2258
2259 /* now that the requets is going, we loop toll we have a result */
2260 frame->data = (void *)state;
2261 frame->prepare = prepare_schedule;
2262 frame->check = slf_check_aio_req;
2263}
2264
2265static void
2266coro_aio_req_xs (pTHX_ CV *cv)
2267{
2268 dVAR;
2269 dXSARGS;
2270
2271 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2272
2273 XSRETURN_EMPTY;
2274}
2275
2276/*****************************************************************************/
1732 2277
1733MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2278MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1734 2279
1735PROTOTYPES: DISABLE 2280PROTOTYPES: DISABLE
1736 2281
1737BOOT: 2282BOOT:
1738{ 2283{
1739#ifdef USE_ITHREADS 2284#ifdef USE_ITHREADS
1740 MUTEX_INIT (&coro_mutex); 2285# if CORO_PTHREAD
2286 coro_thx = PERL_GET_CONTEXT;
2287# endif
1741#endif 2288#endif
1742 BOOT_PAGESIZE; 2289 BOOT_PAGESIZE;
1743 2290
1744 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2291 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1745 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2292 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1763 main_top_env = PL_top_env; 2310 main_top_env = PL_top_env;
1764 2311
1765 while (main_top_env->je_prev) 2312 while (main_top_env->je_prev)
1766 main_top_env = main_top_env->je_prev; 2313 main_top_env = main_top_env->je_prev;
1767 2314
2315 {
2316 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2317
2318 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2319 hv_store_ent (PL_custom_op_names, slf,
2320 newSVpv ("coro_slf", 0), 0);
2321
2322 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2323 hv_store_ent (PL_custom_op_descs, slf,
2324 newSVpv ("coro schedule like function", 0), 0);
2325 }
2326
1768 coroapi.ver = CORO_API_VERSION; 2327 coroapi.ver = CORO_API_VERSION;
1769 coroapi.rev = CORO_API_REVISION; 2328 coroapi.rev = CORO_API_REVISION;
2329
1770 coroapi.transfer = api_transfer; 2330 coroapi.transfer = api_transfer;
2331
2332 coroapi.sv_state = SvSTATE_;
2333 coroapi.execute_slf = api_execute_slf;
2334 coroapi.prepare_nop = prepare_nop;
2335 coroapi.prepare_schedule = prepare_schedule;
2336 coroapi.prepare_cede = prepare_cede;
2337 coroapi.prepare_cede_notself = prepare_cede_notself;
1771 2338
1772 { 2339 {
1773 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2340 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1774 2341
1775 if (!svp) croak ("Time::HiRes is required"); 2342 if (!svp) croak ("Time::HiRes is required");
… …
1808 av_push (coro->args, newSVsv (ST (i))); 2375 av_push (coro->args, newSVsv (ST (i)));
1809} 2376}
1810 OUTPUT: 2377 OUTPUT:
1811 RETVAL 2378 RETVAL
1812 2379
1813# these not obviously related functions are all rolled into the same xs
1814# function to increase chances that they all will call transfer with the same
1815# stack offset
1816void 2380void
1817_set_stacklevel (...) 2381_set_stacklevel (...)
1818 ALIAS: 2382 CODE:
1819 Coro::State::transfer = 1 2383 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1820 Coro::schedule = 2
1821 Coro::cede = 3
1822 Coro::cede_notself = 4
1823 CODE:
1824{
1825 struct transfer_args ta;
1826 2384
1827 PUTBACK; 2385void
1828 switch (ix) 2386transfer (...)
1829 { 2387 PROTOTYPE: $$
1830 case 0: 2388 CODE:
1831 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2389 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1832 ta.next = 0;
1833 break;
1834
1835 case 1:
1836 if (items != 2)
1837 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1838
1839 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1840 break;
1841
1842 case 2:
1843 prepare_schedule (aTHX_ &ta);
1844 break;
1845
1846 case 3:
1847 prepare_cede (aTHX_ &ta);
1848 break;
1849
1850 case 4:
1851 if (!prepare_cede_notself (aTHX_ &ta))
1852 XSRETURN_EMPTY;
1853
1854 break;
1855 }
1856 SPAGAIN;
1857
1858 BARRIER;
1859 PUTBACK;
1860 TRANSFER (ta, 0);
1861 SPAGAIN; /* might be the sp of a different coroutine now */
1862 /* be extra careful not to ever do anything after TRANSFER */
1863}
1864 2390
1865bool 2391bool
1866_destroy (SV *coro_sv) 2392_destroy (SV *coro_sv)
1867 CODE: 2393 CODE:
1868 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2394 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1875 CODE: 2401 CODE:
1876 _exit (code); 2402 _exit (code);
1877 2403
1878int 2404int
1879cctx_stacksize (int new_stacksize = 0) 2405cctx_stacksize (int new_stacksize = 0)
2406 PROTOTYPE: ;$
1880 CODE: 2407 CODE:
1881 RETVAL = coro_stacksize; 2408 RETVAL = cctx_stacksize;
1882 if (new_stacksize) 2409 if (new_stacksize)
2410 {
1883 coro_stacksize = new_stacksize; 2411 cctx_stacksize = new_stacksize;
2412 ++cctx_gen;
2413 }
1884 OUTPUT: 2414 OUTPUT:
1885 RETVAL 2415 RETVAL
1886 2416
1887int 2417int
2418cctx_max_idle (int max_idle = 0)
2419 PROTOTYPE: ;$
2420 CODE:
2421 RETVAL = cctx_max_idle;
2422 if (max_idle > 1)
2423 cctx_max_idle = max_idle;
2424 OUTPUT:
2425 RETVAL
2426
2427int
1888cctx_count () 2428cctx_count ()
2429 PROTOTYPE:
1889 CODE: 2430 CODE:
1890 RETVAL = cctx_count; 2431 RETVAL = cctx_count;
1891 OUTPUT: 2432 OUTPUT:
1892 RETVAL 2433 RETVAL
1893 2434
1894int 2435int
1895cctx_idle () 2436cctx_idle ()
2437 PROTOTYPE:
1896 CODE: 2438 CODE:
1897 RETVAL = cctx_idle; 2439 RETVAL = cctx_idle;
1898 OUTPUT: 2440 OUTPUT:
1899 RETVAL 2441 RETVAL
1900 2442
1901void 2443void
1902list () 2444list ()
2445 PROTOTYPE:
1903 PPCODE: 2446 PPCODE:
1904{ 2447{
1905 struct coro *coro; 2448 struct coro *coro;
1906 for (coro = coro_first; coro; coro = coro->next) 2449 for (coro = coro_first; coro; coro = coro->next)
1907 if (coro->hv) 2450 if (coro->hv)
… …
1966 RETVAL = boolSV (coro->flags & ix); 2509 RETVAL = boolSV (coro->flags & ix);
1967 OUTPUT: 2510 OUTPUT:
1968 RETVAL 2511 RETVAL
1969 2512
1970void 2513void
2514throw (Coro::State self, SV *throw = &PL_sv_undef)
2515 PROTOTYPE: $;$
2516 CODE:
2517{
2518 struct coro *current = SvSTATE_current;
2519 SV **throwp = self == current ? &coro_throw : &self->throw;
2520 SvREFCNT_dec (*throwp);
2521 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2522}
2523
2524void
1971api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2525api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2526 PROTOTYPE: $;$
2527 C_ARGS: aTHX_ coro, flags
1972 2528
1973SV * 2529SV *
1974has_cctx (Coro::State coro) 2530has_cctx (Coro::State coro)
1975 PROTOTYPE: $ 2531 PROTOTYPE: $
1976 CODE: 2532 CODE:
… …
1984 CODE: 2540 CODE:
1985 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2541 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1986 OUTPUT: 2542 OUTPUT:
1987 RETVAL 2543 RETVAL
1988 2544
1989IV 2545UV
1990rss (Coro::State coro) 2546rss (Coro::State coro)
1991 PROTOTYPE: $ 2547 PROTOTYPE: $
1992 ALIAS: 2548 ALIAS:
1993 usecount = 1 2549 usecount = 1
1994 CODE: 2550 CODE:
… …
2000 OUTPUT: 2556 OUTPUT:
2001 RETVAL 2557 RETVAL
2002 2558
2003void 2559void
2004force_cctx () 2560force_cctx ()
2561 PROTOTYPE:
2005 CODE: 2562 CODE:
2006 struct coro *coro = SvSTATE (coro_current);
2007 coro->cctx->idle_sp = 0; 2563 SvSTATE_current->cctx->idle_sp = 0;
2008
2009void
2010throw (Coro::State self, SV *throw = &PL_sv_undef)
2011 PROTOTYPE: $;$
2012 CODE:
2013 SvREFCNT_dec (self->throw);
2014 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2015 2564
2016void 2565void
2017swap_defsv (Coro::State self) 2566swap_defsv (Coro::State self)
2018 PROTOTYPE: $ 2567 PROTOTYPE: $
2019 ALIAS: 2568 ALIAS:
2020 swap_defav = 1 2569 swap_defav = 1
2021 CODE: 2570 CODE:
2022 if (!self->slot) 2571 if (!self->slot)
2023 croak ("cannot swap state with coroutine that has no saved state"); 2572 croak ("cannot swap state with coroutine that has no saved state,");
2024 else 2573 else
2025 { 2574 {
2026 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2575 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2027 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2576 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2028 2577
2029 SV *tmp = *src; *src = *dst; *dst = tmp; 2578 SV *tmp = *src; *src = *dst; *dst = tmp;
2030 } 2579 }
2580
2031 2581
2032MODULE = Coro::State PACKAGE = Coro 2582MODULE = Coro::State PACKAGE = Coro
2033 2583
2034BOOT: 2584BOOT:
2035{ 2585{
… …
2053 2603
2054 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2604 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2055 coro_ready[i] = newAV (); 2605 coro_ready[i] = newAV ();
2056 2606
2057 { 2607 {
2058 SV *sv = perl_get_sv ("Coro::API", TRUE); 2608 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2059 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2060 2609
2061 coroapi.schedule = api_schedule; 2610 coroapi.schedule = api_schedule;
2062 coroapi.cede = api_cede; 2611 coroapi.cede = api_cede;
2063 coroapi.cede_notself = api_cede_notself; 2612 coroapi.cede_notself = api_cede_notself;
2064 coroapi.ready = api_ready; 2613 coroapi.ready = api_ready;
2065 coroapi.is_ready = api_is_ready; 2614 coroapi.is_ready = api_is_ready;
2066 coroapi.nready = &coro_nready; 2615 coroapi.nready = coro_nready;
2067 coroapi.current = coro_current; 2616 coroapi.current = coro_current;
2068 2617
2069 GCoroAPI = &coroapi; 2618 GCoroAPI = &coroapi;
2070 sv_setiv (sv, (IV)&coroapi); 2619 sv_setiv (sv, (IV)&coroapi);
2071 SvREADONLY_on (sv); 2620 SvREADONLY_on (sv);
2072 } 2621 }
2073} 2622}
2623
2624void
2625schedule (...)
2626 CODE:
2627 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2628
2629void
2630cede (...)
2631 CODE:
2632 CORO_EXECUTE_SLF_XS (slf_init_cede);
2633
2634void
2635cede_notself (...)
2636 CODE:
2637 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2074 2638
2075void 2639void
2076_set_current (SV *current) 2640_set_current (SV *current)
2077 PROTOTYPE: $ 2641 PROTOTYPE: $
2078 CODE: 2642 CODE:
… …
2081 2645
2082void 2646void
2083_set_readyhook (SV *hook) 2647_set_readyhook (SV *hook)
2084 PROTOTYPE: $ 2648 PROTOTYPE: $
2085 CODE: 2649 CODE:
2086 LOCK;
2087 SvREFCNT_dec (coro_readyhook); 2650 SvREFCNT_dec (coro_readyhook);
2088 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2651 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2089 UNLOCK;
2090 2652
2091int 2653int
2092prio (Coro::State coro, int newprio = 0) 2654prio (Coro::State coro, int newprio = 0)
2655 PROTOTYPE: $;$
2093 ALIAS: 2656 ALIAS:
2094 nice = 1 2657 nice = 1
2095 CODE: 2658 CODE:
2096{ 2659{
2097 RETVAL = coro->prio; 2660 RETVAL = coro->prio;
… …
2112 2675
2113SV * 2676SV *
2114ready (SV *self) 2677ready (SV *self)
2115 PROTOTYPE: $ 2678 PROTOTYPE: $
2116 CODE: 2679 CODE:
2117 RETVAL = boolSV (api_ready (self)); 2680 RETVAL = boolSV (api_ready (aTHX_ self));
2118 OUTPUT: 2681 OUTPUT:
2119 RETVAL 2682 RETVAL
2120 2683
2121int 2684int
2122nready (...) 2685nready (...)
… …
2129# for async_pool speedup 2692# for async_pool speedup
2130void 2693void
2131_pool_1 (SV *cb) 2694_pool_1 (SV *cb)
2132 CODE: 2695 CODE:
2133{ 2696{
2134 struct coro *coro = SvSTATE (coro_current);
2135 HV *hv = (HV *)SvRV (coro_current); 2697 HV *hv = (HV *)SvRV (coro_current);
2698 struct coro *coro = SvSTATE_hv ((SV *)hv);
2136 AV *defav = GvAV (PL_defgv); 2699 AV *defav = GvAV (PL_defgv);
2137 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2700 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2138 AV *invoke_av; 2701 AV *invoke_av;
2139 int i, len; 2702 int i, len;
2140 2703
… …
2161 { 2724 {
2162 av_fill (defav, len - 1); 2725 av_fill (defav, len - 1);
2163 for (i = 0; i < len; ++i) 2726 for (i = 0; i < len; ++i)
2164 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 2727 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2165 } 2728 }
2166
2167 SvREFCNT_dec (invoke);
2168} 2729}
2169 2730
2170void 2731void
2171_pool_2 (SV *cb) 2732_pool_2 (SV *cb)
2172 CODE: 2733 CODE:
2173{ 2734{
2174 struct coro *coro = SvSTATE (coro_current); 2735 HV *hv = (HV *)SvRV (coro_current);
2736 struct coro *coro = SvSTATE_hv ((SV *)hv);
2175 2737
2176 sv_setsv (cb, &PL_sv_undef); 2738 sv_setsv (cb, &PL_sv_undef);
2177 2739
2178 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2740 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2179 coro->saved_deffh = 0; 2741 coro->saved_deffh = 0;
2180 2742
2181 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2743 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2182 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2744 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2183 { 2745 {
2184 SV *old = PL_diehook; 2746 SV *old = PL_diehook;
2185 PL_diehook = 0; 2747 PL_diehook = 0;
2186 SvREFCNT_dec (old); 2748 SvREFCNT_dec (old);
2187 croak ("\3async_pool terminate\2\n"); 2749 croak ("\3async_pool terminate\2\n");
2188 } 2750 }
2189 2751
2190 av_clear (GvAV (PL_defgv)); 2752 av_clear (GvAV (PL_defgv));
2191 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2753 hv_store (hv, "desc", sizeof ("desc") - 1,
2192 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2754 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2193 2755
2194 coro->prio = 0; 2756 coro->prio = 0;
2195 2757
2196 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2758 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2197 api_trace (coro_current, 0); 2759 api_trace (aTHX_ coro_current, 0);
2198 2760
2199 av_push (av_async_pool, newSVsv (coro_current)); 2761 av_push (av_async_pool, newSVsv (coro_current));
2200} 2762}
2201 2763
2202#if 0
2203 2764
2204void 2765MODULE = Coro::State PACKAGE = PerlIO::cede
2205_generator_call (...) 2766
2206 PROTOTYPE: @ 2767BOOT:
2207 PPCODE: 2768 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2208 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr); 2769
2209 xxxx 2770
2210 abort (); 2771MODULE = Coro::State PACKAGE = Coro::Semaphore
2211 2772
2212SV * 2773SV *
2213gensub (SV *sub, ...) 2774new (SV *klass, SV *count_ = 0)
2214 PROTOTYPE: &;@ 2775 CODE:
2215 CODE:
2216{ 2776{
2217 struct coro *coro; 2777 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2218 MAGIC *mg; 2778 AV *av = newAV ();
2219 CV *xcv; 2779 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2220 CV *ncv = (CV *)newSV_type (SVt_PVCV); 2780 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2221 int i;
2222
2223 CvGV (ncv) = CvGV (cv);
2224 CvFILE (ncv) = CvFILE (cv);
2225
2226 Newz (0, coro, 1, struct coro);
2227 coro->args = newAV ();
2228 coro->flags = CF_NEW;
2229
2230 av_extend (coro->args, items - 1);
2231 for (i = 1; i < items; i++)
2232 av_push (coro->args, newSVsv (ST (i)));
2233
2234 CvISXSUB_on (ncv);
2235 CvXSUBANY (ncv).any_ptr = (void *)coro;
2236
2237 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2238
2239 CvXSUB (ncv) = CvXSUB (xcv);
2240 CvANON_on (ncv);
2241
2242 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2243 RETVAL = newRV_noinc ((SV *)ncv);
2244} 2781}
2245 OUTPUT: 2782 OUTPUT:
2246 RETVAL 2783 RETVAL
2247 2784
2248#endif 2785SV *
2249 2786count (SV *self)
2250 2787 CODE:
2251MODULE = Coro::State PACKAGE = Coro::AIO 2788 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2789 OUTPUT:
2790 RETVAL
2252 2791
2253void 2792void
2254_get_state (SV *self) 2793up (SV *self, int adjust = 1)
2255 PPCODE: 2794 ALIAS:
2256{ 2795 adjust = 1
2257 AV *defav = GvAV (PL_defgv); 2796 CODE:
2258 AV *av = newAV (); 2797 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2259 int i;
2260 SV *data_sv = newSV (sizeof (struct io_state));
2261 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2262 SvCUR_set (data_sv, sizeof (struct io_state));
2263 SvPOK_only (data_sv);
2264
2265 data->errorno = errno;
2266 data->laststype = PL_laststype;
2267 data->laststatval = PL_laststatval;
2268 data->statcache = PL_statcache;
2269
2270 av_extend (av, AvFILLp (defav) + 1 + 1);
2271
2272 for (i = 0; i <= AvFILLp (defav); ++i)
2273 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2274
2275 av_push (av, data_sv);
2276
2277 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2278
2279 api_ready (self);
2280}
2281 2798
2282void 2799void
2283_set_state (SV *state) 2800down (SV *self)
2284 PROTOTYPE: $ 2801 CODE:
2285 PPCODE: 2802 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2803
2804void
2805try (SV *self)
2806 PPCODE:
2286{ 2807{
2287 AV *av = (AV *)SvRV (state); 2808 AV *av = (AV *)SvRV (self);
2288 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 2809 SV *count_sv = AvARRAY (av)[0];
2810 IV count = SvIVX (count_sv);
2811
2812 if (count > 0)
2813 {
2814 --count;
2815 SvIVX (count_sv) = count;
2816 XSRETURN_YES;
2817 }
2818 else
2819 XSRETURN_NO;
2820}
2821
2822void
2823waiters (SV *self)
2824 CODE:
2825{
2826 AV *av = (AV *)SvRV (self);
2827
2828 if (GIMME_V == G_SCALAR)
2829 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2830 else
2831 {
2289 int i; 2832 int i;
2290
2291 errno = data->errorno;
2292 PL_laststype = data->laststype;
2293 PL_laststatval = data->laststatval;
2294 PL_statcache = data->statcache;
2295
2296 EXTEND (SP, AvFILLp (av)); 2833 EXTEND (SP, AvFILLp (av) + 1 - 1);
2297 for (i = 0; i < AvFILLp (av); ++i) 2834 for (i = 1; i <= AvFILLp (av); ++i)
2298 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 2835 PUSHs (newSVsv (AvARRAY (av)[i]));
2836 }
2299} 2837}
2300 2838
2301 2839
2302MODULE = Coro::State PACKAGE = Coro::AnyEvent 2840MODULE = Coro::State PACKAGE = Coro::AnyEvent
2303 2841
2304BOOT: 2842BOOT:
2305 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2843 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2306 2844
2307SV * 2845void
2308_schedule (...) 2846_schedule (...)
2309 PROTOTYPE: @
2310 CODE: 2847 CODE:
2311{ 2848{
2312 static int incede; 2849 static int incede;
2313 2850
2314 api_cede_notself (); 2851 api_cede_notself (aTHX);
2315 2852
2316 ++incede; 2853 ++incede;
2317 while (coro_nready >= incede && api_cede ()) 2854 while (coro_nready >= incede && api_cede (aTHX))
2318 ; 2855 ;
2319 2856
2320 sv_setsv (sv_activity, &PL_sv_undef); 2857 sv_setsv (sv_activity, &PL_sv_undef);
2321 if (coro_nready >= incede) 2858 if (coro_nready >= incede)
2322 { 2859 {
… …
2328 2865
2329 --incede; 2866 --incede;
2330} 2867}
2331 2868
2332 2869
2333MODULE = Coro::State PACKAGE = PerlIO::cede 2870MODULE = Coro::State PACKAGE = Coro::AIO
2334 2871
2335BOOT: 2872void
2336 PerlIO_define_layer (aTHX_ &PerlIO_cede); 2873_register (char *target, char *proto, SV *req)
2874 CODE:
2875{
2876 HV *st;
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 CV *slf_cv = newXSproto (target, coro_aio_req_xs, __FILE__, proto);
2880 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2881}
2882

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