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 1.250 by root, Wed Oct 22 16:34:07 2008 UTC vs.
Revision 1.288 by root, Mon Nov 17 07:14:50 2008 UTC

… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
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 100#ifndef CvISXSUB_on
94# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) 101# define CvISXSUB_on(cv) (void)cv
95#endif
96
97/* 5.11 */
98#ifndef CxHASARGS
99# define CxHASARGS(cx) (cx)->blk_sub.hasargs
100#endif 102#endif
101 103
102/* 5.8.7 */ 104/* 5.8.7 */
103#ifndef SvRV_set 105#ifndef SvRV_set
104# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
… …
117# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
118#endif 120#endif
119 121
120/* 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
121 * portable way as possible. */ 123 * portable way as possible. */
122#define dSTACKLEVEL volatile char stacklevel 124#if __GNUC__ >= 4
123#define STACKLEVEL ((void *)&stacklevel) 125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
126#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
128#endif
124 129
125#define IN_DESTRUCT (PL_main_cv == Nullcv) 130#define IN_DESTRUCT (PL_main_cv == Nullcv)
126 131
127#if __GNUC__ >= 3 132#if __GNUC__ >= 3
128# define attribute(x) __attribute__(x) 133# define attribute(x) __attribute__(x)
129# define BARRIER __asm__ __volatile__ ("" : : : "memory")
130# define expect(expr,value) __builtin_expect ((expr),(value)) 134# define expect(expr,value) __builtin_expect ((expr),(value))
135# define INLINE static inline
131#else 136#else
132# define attribute(x) 137# define attribute(x)
133# define BARRIER
134# define expect(expr,value) (expr) 138# define expect(expr,value) (expr)
139# define INLINE static
135#endif 140#endif
136 141
137#define expect_false(expr) expect ((expr) != 0, 0) 142#define expect_false(expr) expect ((expr) != 0, 0)
138#define expect_true(expr) expect ((expr) != 0, 1) 143#define expect_true(expr) expect ((expr) != 0, 1)
139 144
140#define NOINLINE attribute ((noinline)) 145#define NOINLINE attribute ((noinline))
141 146
142#include "CoroAPI.h" 147#include "CoroAPI.h"
143 148
144#ifdef USE_ITHREADS 149#ifdef USE_ITHREADS
145static perl_mutex coro_mutex; 150# if CORO_PTHREAD
146# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 151static 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 152# endif
152 153#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};
162 154
163static double (*nvtime)(); /* so why doesn't it take void? */ 155static double (*nvtime)(); /* so why doesn't it take void? */
164 156
157static U32 cctx_gen;
165static size_t coro_stacksize = CORO_STACKSIZE; 158static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 159static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 160static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 161static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 162static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed after next transfer */ 163static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 164
172static GV *irsgv; /* $/ */ 165static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 166static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 167static SV *rv_diehook;
175static SV *rv_warnhook; 168static SV *rv_warnhook;
… …
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 187 CC_TRACE_LINE = 0x10, /* trace each statement */
195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
196}; 189};
197 190
198/* this is a structure representing a c-level coroutine */ 191/* this is a structure representing a c-level coroutine */
199typedef struct coro_cctx { 192typedef struct coro_cctx
193{
200 struct coro_cctx *next; 194 struct coro_cctx *next;
201 195
202 /* the stack */ 196 /* the stack */
203 void *sptr; 197 void *sptr;
204 size_t ssize; 198 size_t ssize;
… …
207 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 201 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 */ 202 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
209 JMPENV *top_env; 203 JMPENV *top_env;
210 coro_context cctx; 204 coro_context cctx;
211 205
206 U32 gen;
212#if CORO_USE_VALGRIND 207#if CORO_USE_VALGRIND
213 int valgrind_id; 208 int valgrind_id;
214#endif 209#endif
215 unsigned char flags; 210 unsigned char flags;
216} coro_cctx; 211} coro_cctx;
… …
221 CF_NEW = 0x0004, /* has never been switched to */ 216 CF_NEW = 0x0004, /* has never been switched to */
222 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 217 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
223}; 218};
224 219
225/* the structure where most of the perl state is stored, overlaid on the cxstack */ 220/* the structure where most of the perl state is stored, overlaid on the cxstack */
226typedef struct { 221typedef struct
222{
227 SV *defsv; 223 SV *defsv;
228 AV *defav; 224 AV *defav;
229 SV *errsv; 225 SV *errsv;
230 SV *irsgv; 226 SV *irsgv;
231#define VAR(name,type) type name; 227#define VAR(name,type) type name;
… …
235 231
236#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 232#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
237 233
238/* this is a structure representing a perl-level coroutine */ 234/* this is a structure representing a perl-level coroutine */
239struct coro { 235struct coro {
240 /* the c coroutine allocated to this perl coroutine, if any */ 236 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx; 237 coro_cctx *cctx;
242 238
243 /* process data */ 239 /* state data */
240 struct CoroSLF slf_frame; /* saved slf frame */
244 AV *mainstack; 241 AV *mainstack;
245 perl_slots *slot; /* basically the saved sp */ 242 perl_slots *slot; /* basically the saved sp */
246 243
247 AV *args; /* data associated with this coroutine (initial args) */ 244 AV *args; /* data associated with this coroutine (initial args) */
248 int refcnt; /* coroutines are refcounted, yes */ 245 int refcnt; /* coroutines are refcounted, yes */
249 int flags; /* CF_ flags */ 246 int flags; /* CF_ flags */
250 HV *hv; /* the perl hash associated with this coro, if any */ 247 HV *hv; /* the perl hash associated with this coro, if any */
248 void (*on_destroy)(pTHX_ struct coro *coro);
251 249
252 /* statistics */ 250 /* statistics */
253 int usecount; /* number of transfers to this coro */ 251 int usecount; /* number of transfers to this coro */
254 252
255 /* coro process data */ 253 /* coro process data */
… …
263 struct coro *next, *prev; 261 struct coro *next, *prev;
264}; 262};
265 263
266typedef struct coro *Coro__State; 264typedef struct coro *Coro__State;
267typedef struct coro *Coro__State_or_hashref; 265typedef struct coro *Coro__State_or_hashref;
266
267/* the following variables are effectively part of the perl context */
268/* and get copied between struct coro and these variables */
269/* the mainr easonw e don't support windows process emulation */
270static struct CoroSLF slf_frame; /* the current slf frame */
271static SV *coro_throw;
268 272
269/** Coro ********************************************************************/ 273/** Coro ********************************************************************/
270 274
271#define PRIO_MAX 3 275#define PRIO_MAX 3
272#define PRIO_HIGH 1 276#define PRIO_HIGH 1
… …
276#define PRIO_MIN -4 280#define PRIO_MIN -4
277 281
278/* for Coro.pm */ 282/* for Coro.pm */
279static SV *coro_current; 283static SV *coro_current;
280static SV *coro_readyhook; 284static SV *coro_readyhook;
281static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 285static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
282static int coro_nready;
283static struct coro *coro_first; 286static struct coro *coro_first;
287#define coro_nready coroapi.nready
284 288
285/** lowlevel stuff **********************************************************/ 289/** lowlevel stuff **********************************************************/
286 290
287static SV * 291static SV *
288coro_get_sv (pTHX_ const char *name, int create) 292coro_get_sv (pTHX_ const char *name, int create)
… …
373 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 377 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
374 378
375 return 0; 379 return 0;
376} 380}
377 381
378#define CORO_MAGIC_type_cv PERL_MAGIC_ext 382#define CORO_MAGIC_type_cv 26
379#define CORO_MAGIC_type_state PERL_MAGIC_ext 383#define CORO_MAGIC_type_state PERL_MAGIC_ext
380 384
381static MGVTBL coro_cv_vtbl = { 385static MGVTBL coro_cv_vtbl = {
382 0, 0, 0, 0, 386 0, 0, 0, 0,
383 coro_cv_free 387 coro_cv_free
384}; 388};
385 389
390#define CORO_MAGIC_NN(sv, type) \
391 (expect_true (SvMAGIC (sv)->mg_type == type) \
392 ? SvMAGIC (sv) \
393 : mg_find (sv, type))
394
386#define CORO_MAGIC(sv,type) \ 395#define CORO_MAGIC(sv, type) \
387 SvMAGIC (sv) \ 396 (expect_true (SvMAGIC (sv)) \
388 ? SvMAGIC (sv)->mg_type == type \ 397 ? CORO_MAGIC_NN (sv, type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type) \
391 : 0 398 : 0)
392 399
393#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
394#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 401#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
395 402
396static struct coro * 403INLINE struct coro *
397SvSTATE_ (pTHX_ SV *coro) 404SvSTATE_ (pTHX_ SV *coro)
398{ 405{
399 HV *stash; 406 HV *stash;
400 MAGIC *mg; 407 MAGIC *mg;
401 408
… …
416 mg = CORO_MAGIC_state (coro); 423 mg = CORO_MAGIC_state (coro);
417 return (struct coro *)mg->mg_ptr; 424 return (struct coro *)mg->mg_ptr;
418} 425}
419 426
420#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* faster than SvSTATE, but expects a coroutine hv */
430#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
431#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
421 432
422/* the next two functions merely cache the padlists */ 433/* the next two functions merely cache the padlists */
423static void 434static void
424get_padlist (pTHX_ CV *cv) 435get_padlist (pTHX_ CV *cv)
425{ 436{
… …
492 CvPADLIST (cv) = (AV *)POPs; 503 CvPADLIST (cv) = (AV *)POPs;
493 } 504 }
494 505
495 PUTBACK; 506 PUTBACK;
496 } 507 }
508
509 slf_frame = c->slf_frame;
510 coro_throw = c->throw;
497} 511}
498 512
499static void 513static void
500save_perl (pTHX_ Coro__State c) 514save_perl (pTHX_ Coro__State c)
501{ 515{
516 c->throw = coro_throw;
517 c->slf_frame = slf_frame;
518
502 { 519 {
503 dSP; 520 dSP;
504 I32 cxix = cxstack_ix; 521 I32 cxix = cxstack_ix;
505 PERL_CONTEXT *ccstk = cxstack; 522 PERL_CONTEXT *ccstk = cxstack;
506 PERL_SI *top_si = PL_curstackinfo; 523 PERL_SI *top_si = PL_curstackinfo;
… …
573 #undef VAR 590 #undef VAR
574 } 591 }
575} 592}
576 593
577/* 594/*
578 * allocate various perl stacks. This is an exact copy 595 * allocate various perl stacks. This is almost an exact copy
579 * of perl.c:init_stacks, except that it uses less memory 596 * of perl.c:init_stacks, except that it uses less memory
580 * on the (sometimes correct) assumption that coroutines do 597 * on the (sometimes correct) assumption that coroutines do
581 * not usually need a lot of stackspace. 598 * not usually need a lot of stackspace.
582 */ 599 */
583#if CORO_PREFER_PERL_FUNCTIONS 600#if CORO_PREFER_PERL_FUNCTIONS
… …
626 643
627/* 644/*
628 * destroy the stacks, the callchain etc... 645 * destroy the stacks, the callchain etc...
629 */ 646 */
630static void 647static void
631coro_destroy_stacks (pTHX) 648coro_destruct_stacks (pTHX)
632{ 649{
633 while (PL_curstackinfo->si_next) 650 while (PL_curstackinfo->si_next)
634 PL_curstackinfo = PL_curstackinfo->si_next; 651 PL_curstackinfo = PL_curstackinfo->si_next;
635 652
636 while (PL_curstackinfo) 653 while (PL_curstackinfo)
… …
785 802
786 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 803 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
787} 804}
788 805
789static void 806static void
807prepare_nop (pTHX_ struct coro_transfer_args *ta)
808{
809 /* kind of mega-hacky, but works */
810 ta->next = ta->prev = (struct coro *)ta;
811}
812
813static int
814slf_check_nop (pTHX_ struct CoroSLF *frame)
815{
816 return 0;
817}
818
819static void NOINLINE /* noinline to keep it out of the transfer fast path */
790coro_setup (pTHX_ struct coro *coro) 820coro_setup (pTHX_ struct coro *coro)
791{ 821{
792 /* 822 /*
793 * emulate part of the perl startup here. 823 * emulate part of the perl startup here.
794 */ 824 */
… …
818 PL_rs = newSVsv (GvSV (irsgv)); 848 PL_rs = newSVsv (GvSV (irsgv));
819 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 849 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
820 850
821 { 851 {
822 dSP; 852 dSP;
823 LOGOP myop; 853 UNOP myop;
824 854
825 Zero (&myop, 1, LOGOP); 855 Zero (&myop, 1, UNOP);
826 myop.op_next = Nullop; 856 myop.op_next = Nullop;
827 myop.op_flags = OPf_WANT_VOID; 857 myop.op_flags = OPf_WANT_VOID;
828 858
829 PUSHMARK (SP); 859 PUSHMARK (SP);
830 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 860 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
833 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 863 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
834 SPAGAIN; 864 SPAGAIN;
835 } 865 }
836 866
837 /* this newly created coroutine might be run on an existing cctx which most 867 /* this newly created coroutine might be run on an existing cctx which most
838 * likely was suspended in set_stacklevel, called from entersub. 868 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
839 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
840 * so we ENTER here for symmetry
841 */ 869 */
842 ENTER; 870 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
843} 871 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
844 872
873 coro_throw = coro->throw;
874}
875
845static void 876static void
846coro_destroy (pTHX_ struct coro *coro) 877coro_destruct (pTHX_ struct coro *coro)
847{ 878{
848 if (!IN_DESTRUCT) 879 if (!IN_DESTRUCT)
849 { 880 {
850 /* restore all saved variables and stuff */ 881 /* restore all saved variables and stuff */
851 LEAVE_SCOPE (0); 882 LEAVE_SCOPE (0);
… …
871 902
872 SvREFCNT_dec (PL_diehook); 903 SvREFCNT_dec (PL_diehook);
873 SvREFCNT_dec (PL_warnhook); 904 SvREFCNT_dec (PL_warnhook);
874 905
875 SvREFCNT_dec (coro->saved_deffh); 906 SvREFCNT_dec (coro->saved_deffh);
876 SvREFCNT_dec (coro->throw); 907 SvREFCNT_dec (coro_throw);
877 908
878 coro_destroy_stacks (aTHX); 909 coro_destruct_stacks (aTHX);
879} 910}
880 911
881static void 912INLINE void
882free_coro_mortal (pTHX) 913free_coro_mortal (pTHX)
883{ 914{
884 if (expect_true (coro_mortal)) 915 if (expect_true (coro_mortal))
885 { 916 {
886 SvREFCNT_dec (coro_mortal); 917 SvREFCNT_dec (coro_mortal);
… …
891static int 922static int
892runops_trace (pTHX) 923runops_trace (pTHX)
893{ 924{
894 COP *oldcop = 0; 925 COP *oldcop = 0;
895 int oldcxix = -2; 926 int oldcxix = -2;
896 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 927 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
897 coro_cctx *cctx = coro->cctx; 928 coro_cctx *cctx = coro->cctx;
898 929
899 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 930 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
900 { 931 {
901 PERL_ASYNC_CHECK (); 932 PERL_ASYNC_CHECK ();
… …
1010 1041
1011 TAINT_NOT; 1042 TAINT_NOT;
1012 return 0; 1043 return 0;
1013} 1044}
1014 1045
1046static void
1047prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1048{
1049 ta->prev = (struct coro *)cctx;
1050 ta->next = 0;
1051}
1052
1015/* inject a fake call to Coro::State::_cctx_init into the execution */ 1053/* 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 */ 1054/* _cctx_init should be careful, as it could be called at almost any time */
1017/* during execution of a perl program */ 1055/* during execution of a perl program */
1056/* also initialises PL_top_env */
1018static void NOINLINE 1057static void NOINLINE
1019cctx_prepare (pTHX_ coro_cctx *cctx) 1058cctx_prepare (pTHX_ coro_cctx *cctx)
1020{ 1059{
1021 dSP; 1060 dSP;
1022 LOGOP myop; 1061 UNOP myop;
1023 1062
1024 PL_top_env = &PL_start_env; 1063 PL_top_env = &PL_start_env;
1025 1064
1026 if (cctx->flags & CC_TRACE) 1065 if (cctx->flags & CC_TRACE)
1027 PL_runops = runops_trace; 1066 PL_runops = runops_trace;
1028 1067
1029 Zero (&myop, 1, LOGOP); 1068 Zero (&myop, 1, UNOP);
1030 myop.op_next = PL_op; 1069 myop.op_next = PL_op;
1031 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1070 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
1032 1071
1033 PUSHMARK (SP); 1072 PUSHMARK (SP);
1034 EXTEND (SP, 2); 1073 EXTEND (SP, 2);
1035 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1074 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
1036 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1075 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1037 PUTBACK; 1076 PUTBACK;
1038 PL_op = (OP *)&myop; 1077 PL_op = (OP *)&myop;
1039 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1078 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1040 SPAGAIN; 1079 SPAGAIN;
1041} 1080}
1042 1081
1082/* the tail of transfer: execute stuff we can only do after a transfer */
1083INLINE void
1084transfer_tail (pTHX)
1085{
1086 free_coro_mortal (aTHX);
1087}
1088
1043/* 1089/*
1044 * this is a _very_ stripped down perl interpreter ;) 1090 * this is a _very_ stripped down perl interpreter ;)
1045 */ 1091 */
1046static void 1092static void
1047cctx_run (void *arg) 1093cctx_run (void *arg)
1048{ 1094{
1095#ifdef USE_ITHREADS
1096# if CORO_PTHREAD
1097 PERL_SET_CONTEXT (coro_thx);
1098# endif
1099#endif
1100 {
1049 dTHX; 1101 dTHX;
1050 1102
1051 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1103 /* normally we would need to skip the entersub here */
1052 UNLOCK; 1104 /* 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; 1105 /* PL_nop = PL_nop->op_next */
1056 1106
1057 /* inject a fake subroutine call to cctx_init */ 1107 /* inject a fake subroutine call to cctx_init */
1058 cctx_prepare (aTHX_ (coro_cctx *)arg); 1108 cctx_prepare (aTHX_ (coro_cctx *)arg);
1059 1109
1110 /* cctx_run is the alternative tail of transfer() */
1111 transfer_tail (aTHX);
1112
1060 /* somebody or something will hit me for both perl_run and PL_restartop */ 1113 /* somebody or something will hit me for both perl_run and PL_restartop */
1061 PL_restartop = PL_op; 1114 PL_restartop = PL_op;
1062 perl_run (PL_curinterp); 1115 perl_run (PL_curinterp);
1063 1116
1064 /* 1117 /*
1065 * If perl-run returns we assume exit() was being called or the coro 1118 * 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) 1119 * 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 1120 * 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" 1121 * bootstrap-time "top" top_env, as we cannot restore the "main"
1069 * coroutine as Coro has no such concept 1122 * coroutine as Coro has no such concept
1070 */ 1123 */
1071 PL_top_env = main_top_env; 1124 PL_top_env = main_top_env;
1072 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1125 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1126 }
1073} 1127}
1074 1128
1075static coro_cctx * 1129static coro_cctx *
1076cctx_new () 1130cctx_new ()
1077{ 1131{
1078 coro_cctx *cctx; 1132 coro_cctx *cctx;
1133
1134 ++cctx_count;
1135 New (0, cctx, 1, coro_cctx);
1136
1137 cctx->gen = cctx_gen;
1138 cctx->flags = 0;
1139 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1140
1141 return cctx;
1142}
1143
1144/* create a new cctx only suitable as source */
1145static coro_cctx *
1146cctx_new_empty ()
1147{
1148 coro_cctx *cctx = cctx_new ();
1149
1150 cctx->sptr = 0;
1151 coro_create (&cctx->cctx, 0, 0, 0, 0);
1152
1153 return cctx;
1154}
1155
1156/* create a new cctx suitable as destination/running a perl interpreter */
1157static coro_cctx *
1158cctx_new_run ()
1159{
1160 coro_cctx *cctx = cctx_new ();
1079 void *stack_start; 1161 void *stack_start;
1080 size_t stack_size; 1162 size_t stack_size;
1081 1163
1082 ++cctx_count;
1083
1084 Newz (0, cctx, 1, coro_cctx);
1085
1086#if HAVE_MMAP 1164#if HAVE_MMAP
1087 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1165 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1088 /* mmap supposedly does allocate-on-write for us */ 1166 /* 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); 1167 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1090 1168
1091 if (cctx->sptr != (void *)-1) 1169 if (cctx->sptr != (void *)-1)
1092 { 1170 {
1093# if CORO_STACKGUARD 1171 #if CORO_STACKGUARD
1094 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1172 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1095# endif 1173 #endif
1096 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1174 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1097 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1175 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1098 cctx->flags |= CC_MAPPED; 1176 cctx->flags |= CC_MAPPED;
1099 } 1177 }
1100 else 1178 else
1101#endif 1179#endif
1102 { 1180 {
1103 cctx->ssize = coro_stacksize * (long)sizeof (long); 1181 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1104 New (0, cctx->sptr, coro_stacksize, long); 1182 New (0, cctx->sptr, cctx_stacksize, long);
1105 1183
1106 if (!cctx->sptr) 1184 if (!cctx->sptr)
1107 { 1185 {
1108 perror ("FATAL: unable to allocate stack for coroutine"); 1186 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1109 _exit (EXIT_FAILURE); 1187 _exit (EXIT_FAILURE);
1110 } 1188 }
1111 1189
1112 stack_start = cctx->sptr; 1190 stack_start = cctx->sptr;
1113 stack_size = cctx->ssize; 1191 stack_size = cctx->ssize;
1114 } 1192 }
1115 1193
1116 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1194 #if CORO_USE_VALGRIND
1195 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1196 #endif
1197
1117 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1198 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1118 1199
1119 return cctx; 1200 return cctx;
1120} 1201}
1121 1202
… …
1124{ 1205{
1125 if (!cctx) 1206 if (!cctx)
1126 return; 1207 return;
1127 1208
1128 --cctx_count; 1209 --cctx_count;
1210 coro_destroy (&cctx->cctx);
1129 1211
1212 /* coro_transfer creates new, empty cctx's */
1213 if (cctx->sptr)
1214 {
1130#if CORO_USE_VALGRIND 1215 #if CORO_USE_VALGRIND
1131 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1216 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1132#endif 1217 #endif
1133 1218
1134#if HAVE_MMAP 1219#if HAVE_MMAP
1135 if (cctx->flags & CC_MAPPED) 1220 if (cctx->flags & CC_MAPPED)
1136 munmap (cctx->sptr, cctx->ssize); 1221 munmap (cctx->sptr, cctx->ssize);
1137 else 1222 else
1138#endif 1223#endif
1139 Safefree (cctx->sptr); 1224 Safefree (cctx->sptr);
1225 }
1140 1226
1141 Safefree (cctx); 1227 Safefree (cctx);
1142} 1228}
1143 1229
1144/* wether this cctx should be destructed */ 1230/* wether this cctx should be destructed */
1145#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1231#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1146 1232
1147static coro_cctx * 1233static coro_cctx *
1148cctx_get (pTHX) 1234cctx_get (pTHX)
1149{ 1235{
1150 while (expect_true (cctx_first)) 1236 while (expect_true (cctx_first))
… …
1157 return cctx; 1243 return cctx;
1158 1244
1159 cctx_destroy (cctx); 1245 cctx_destroy (cctx);
1160 } 1246 }
1161 1247
1162 return cctx_new (); 1248 return cctx_new_run ();
1163} 1249}
1164 1250
1165static void 1251static void
1166cctx_put (coro_cctx *cctx) 1252cctx_put (coro_cctx *cctx)
1167{ 1253{
1254 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1255
1168 /* free another cctx if overlimit */ 1256 /* free another cctx if overlimit */
1169 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1257 if (expect_false (cctx_idle >= cctx_max_idle))
1170 { 1258 {
1171 coro_cctx *first = cctx_first; 1259 coro_cctx *first = cctx_first;
1172 cctx_first = first->next; 1260 cctx_first = first->next;
1173 --cctx_idle; 1261 --cctx_idle;
1174 1262
… …
1183/** coroutine switching *****************************************************/ 1271/** coroutine switching *****************************************************/
1184 1272
1185static void 1273static void
1186transfer_check (pTHX_ struct coro *prev, struct coro *next) 1274transfer_check (pTHX_ struct coro *prev, struct coro *next)
1187{ 1275{
1276 /* TODO: throwing up here is considered harmful */
1277
1188 if (expect_true (prev != next)) 1278 if (expect_true (prev != next))
1189 { 1279 {
1190 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1280 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"); 1281 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1192 1282
1193 if (expect_false (next->flags & CF_RUNNING)) 1283 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"); 1284 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1195 1285
1196 if (expect_false (next->flags & CF_DESTROYED)) 1286 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"); 1287 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1198 1288
1199#if !PERL_VERSION_ATLEAST (5,10,0) 1289#if !PERL_VERSION_ATLEAST (5,10,0)
1200 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1290 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"); 1291 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1202#endif 1292#endif
1203 } 1293 }
1204} 1294}
1205 1295
1206/* always use the TRANSFER macro */ 1296/* always use the TRANSFER macro */
1207static void NOINLINE 1297static void NOINLINE /* noinline so we have a fixed stackframe */
1208transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1298transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1209{ 1299{
1210 dSTACKLEVEL; 1300 dSTACKLEVEL;
1211 static volatile int has_throw;
1212 1301
1213 /* sometimes transfer is only called to set idle_sp */ 1302 /* sometimes transfer is only called to set idle_sp */
1214 if (expect_false (!next)) 1303 if (expect_false (!next))
1215 { 1304 {
1216 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1305 ((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 */ 1306 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1218 } 1307 }
1219 else if (expect_true (prev != next)) 1308 else if (expect_true (prev != next))
1220 { 1309 {
1221 coro_cctx *prev__cctx; 1310 coro_cctx *prev__cctx;
1222 1311
1223 if (expect_false (prev->flags & CF_NEW)) 1312 if (expect_false (prev->flags & CF_NEW))
1224 { 1313 {
1225 /* create a new empty context */ 1314 /* create a new empty/source context */
1226 Newz (0, prev->cctx, 1, coro_cctx); 1315 prev->cctx = cctx_new_empty ();
1227 prev->flags &= ~CF_NEW; 1316 prev->flags &= ~CF_NEW;
1228 prev->flags |= CF_RUNNING; 1317 prev->flags |= CF_RUNNING;
1229 } 1318 }
1230 1319
1231 prev->flags &= ~CF_RUNNING; 1320 prev->flags &= ~CF_RUNNING;
1232 next->flags |= CF_RUNNING; 1321 next->flags |= CF_RUNNING;
1233
1234 LOCK;
1235 1322
1236 /* first get rid of the old state */ 1323 /* first get rid of the old state */
1237 save_perl (aTHX_ prev); 1324 save_perl (aTHX_ prev);
1238 1325
1239 if (expect_false (next->flags & CF_NEW)) 1326 if (expect_false (next->flags & CF_NEW))
… …
1246 else 1333 else
1247 load_perl (aTHX_ next); 1334 load_perl (aTHX_ next);
1248 1335
1249 prev__cctx = prev->cctx; 1336 prev__cctx = prev->cctx;
1250 1337
1251 /* possibly "free" the cctx */ 1338 /* possibly untie and reuse the cctx */
1252 if (expect_true ( 1339 if (expect_true (
1253 prev__cctx->idle_sp == STACKLEVEL 1340 prev__cctx->idle_sp == (void *)stacklevel
1254 && !(prev__cctx->flags & CC_TRACE) 1341 && !(prev__cctx->flags & CC_TRACE)
1255 && !force_cctx 1342 && !force_cctx
1256 )) 1343 ))
1257 { 1344 {
1258 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1345 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1259 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1346 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1260 1347
1261 prev->cctx = 0; 1348 prev->cctx = 0;
1262 1349
1263 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1350 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1264 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1351 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1271 1358
1272 ++next->usecount; 1359 ++next->usecount;
1273 1360
1274 if (expect_true (!next->cctx)) 1361 if (expect_true (!next->cctx))
1275 next->cctx = cctx_get (aTHX); 1362 next->cctx = cctx_get (aTHX);
1276
1277 has_throw = !!next->throw;
1278 1363
1279 if (expect_false (prev__cctx != next->cctx)) 1364 if (expect_false (prev__cctx != next->cctx))
1280 { 1365 {
1281 prev__cctx->top_env = PL_top_env; 1366 prev__cctx->top_env = PL_top_env;
1282 PL_top_env = next->cctx->top_env; 1367 PL_top_env = next->cctx->top_env;
1283 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1368 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1284 } 1369 }
1285 1370
1286 free_coro_mortal (aTHX); 1371 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 } 1372 }
1302} 1373}
1303
1304struct transfer_args
1305{
1306 struct coro *prev, *next;
1307};
1308 1374
1309#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1375#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) 1376#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1311 1377
1312/** high level stuff ********************************************************/ 1378/** high level stuff ********************************************************/
… …
1314static int 1380static int
1315coro_state_destroy (pTHX_ struct coro *coro) 1381coro_state_destroy (pTHX_ struct coro *coro)
1316{ 1382{
1317 if (coro->flags & CF_DESTROYED) 1383 if (coro->flags & CF_DESTROYED)
1318 return 0; 1384 return 0;
1385
1386 if (coro->on_destroy)
1387 coro->on_destroy (aTHX_ coro);
1319 1388
1320 coro->flags |= CF_DESTROYED; 1389 coro->flags |= CF_DESTROYED;
1321 1390
1322 if (coro->flags & CF_READY) 1391 if (coro->flags & CF_READY)
1323 { 1392 {
1324 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1393 /* reduce nready, as destroying a ready coro effectively unreadies it */
1325 /* alternative: look through all ready queues and remove the coro */ 1394 /* alternative: look through all ready queues and remove the coro */
1326 LOCK;
1327 --coro_nready; 1395 --coro_nready;
1328 UNLOCK;
1329 } 1396 }
1330 else 1397 else
1331 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1398 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1332 1399
1333 if (coro->mainstack && coro->mainstack != main_mainstack) 1400 if (coro->mainstack && coro->mainstack != main_mainstack)
1334 { 1401 {
1335 struct coro temp; 1402 struct coro temp;
1336 1403
1337 if (coro->flags & CF_RUNNING) 1404 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1338 croak ("FATAL: tried to destroy currently running coroutine");
1339 1405
1340 save_perl (aTHX_ &temp); 1406 save_perl (aTHX_ &temp);
1341 load_perl (aTHX_ coro); 1407 load_perl (aTHX_ coro);
1342 1408
1343 coro_destroy (aTHX_ coro); 1409 coro_destruct (aTHX_ coro);
1344 1410
1345 load_perl (aTHX_ &temp); 1411 load_perl (aTHX_ &temp);
1346 1412
1347 coro->slot = 0; 1413 coro->slot = 0;
1348 } 1414 }
… …
1394# define MGf_DUP 0 1460# define MGf_DUP 0
1395#endif 1461#endif
1396}; 1462};
1397 1463
1398static void 1464static void
1399prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1465prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1400{ 1466{
1401 ta->prev = SvSTATE (prev_sv); 1467 ta->prev = SvSTATE (prev_sv);
1402 ta->next = SvSTATE (next_sv); 1468 ta->next = SvSTATE (next_sv);
1403 TRANSFER_CHECK (*ta); 1469 TRANSFER_CHECK (*ta);
1404} 1470}
1405 1471
1406static void 1472static void
1407api_transfer (SV *prev_sv, SV *next_sv) 1473api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1408{ 1474{
1409 dTHX;
1410 struct transfer_args ta; 1475 struct coro_transfer_args ta;
1411 1476
1412 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1477 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1413 TRANSFER (ta, 1); 1478 TRANSFER (ta, 1);
1414} 1479}
1415 1480
1416/** Coro ********************************************************************/ 1481/** Coro ********************************************************************/
1417 1482
1418static void 1483INLINE void
1419coro_enq (pTHX_ SV *coro_sv) 1484coro_enq (pTHX_ struct coro *coro)
1420{ 1485{
1421 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1486 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1422} 1487}
1423 1488
1424static SV * 1489INLINE SV *
1425coro_deq (pTHX) 1490coro_deq (pTHX)
1426{ 1491{
1427 int prio; 1492 int prio;
1428 1493
1429 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1494 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1432 1497
1433 return 0; 1498 return 0;
1434} 1499}
1435 1500
1436static int 1501static int
1437api_ready (SV *coro_sv) 1502api_ready (pTHX_ SV *coro_sv)
1438{ 1503{
1439 dTHX;
1440 struct coro *coro; 1504 struct coro *coro;
1441 SV *sv_hook; 1505 SV *sv_hook;
1442 void (*xs_hook)(void); 1506 void (*xs_hook)(void);
1443 1507
1444 if (SvROK (coro_sv)) 1508 if (SvROK (coro_sv))
… …
1449 if (coro->flags & CF_READY) 1513 if (coro->flags & CF_READY)
1450 return 0; 1514 return 0;
1451 1515
1452 coro->flags |= CF_READY; 1516 coro->flags |= CF_READY;
1453 1517
1454 LOCK;
1455
1456 sv_hook = coro_nready ? 0 : coro_readyhook; 1518 sv_hook = coro_nready ? 0 : coro_readyhook;
1457 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1519 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1458 1520
1459 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1521 coro_enq (aTHX_ coro);
1460 ++coro_nready; 1522 ++coro_nready;
1461 1523
1462 UNLOCK;
1463
1464 if (sv_hook) 1524 if (sv_hook)
1465 { 1525 {
1466 dSP; 1526 dSP;
1467 1527
1468 ENTER; 1528 ENTER;
… …
1482 1542
1483 return 1; 1543 return 1;
1484} 1544}
1485 1545
1486static int 1546static int
1487api_is_ready (SV *coro_sv) 1547api_is_ready (pTHX_ SV *coro_sv)
1488{ 1548{
1489 dTHX;
1490 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1549 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1491} 1550}
1492 1551
1493static void 1552INLINE void
1494prepare_schedule (pTHX_ struct transfer_args *ta) 1553prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1495{ 1554{
1496 SV *prev_sv, *next_sv; 1555 SV *prev_sv, *next_sv;
1497 1556
1498 for (;;) 1557 for (;;)
1499 { 1558 {
1500 LOCK;
1501 next_sv = coro_deq (aTHX); 1559 next_sv = coro_deq (aTHX);
1502 1560
1503 /* nothing to schedule: call the idle handler */ 1561 /* nothing to schedule: call the idle handler */
1504 if (expect_false (!next_sv)) 1562 if (expect_false (!next_sv))
1505 { 1563 {
1506 dSP; 1564 dSP;
1507 UNLOCK;
1508 1565
1509 ENTER; 1566 ENTER;
1510 SAVETMPS; 1567 SAVETMPS;
1511 1568
1512 PUSHMARK (SP); 1569 PUSHMARK (SP);
… …
1517 FREETMPS; 1574 FREETMPS;
1518 LEAVE; 1575 LEAVE;
1519 continue; 1576 continue;
1520 } 1577 }
1521 1578
1522 ta->next = SvSTATE (next_sv); 1579 ta->next = SvSTATE_hv (next_sv);
1523 1580
1524 /* cannot transfer to destroyed coros, skip and look for next */ 1581 /* cannot transfer to destroyed coros, skip and look for next */
1525 if (expect_false (ta->next->flags & CF_DESTROYED)) 1582 if (expect_false (ta->next->flags & CF_DESTROYED))
1526 { 1583 {
1527 UNLOCK;
1528 SvREFCNT_dec (next_sv); 1584 SvREFCNT_dec (next_sv);
1529 /* coro_nready is already taken care of by destroy */ 1585 /* coro_nready has already been taken care of by destroy */
1530 continue; 1586 continue;
1531 } 1587 }
1532 1588
1533 --coro_nready; 1589 --coro_nready;
1534 UNLOCK;
1535 break; 1590 break;
1536 } 1591 }
1537 1592
1538 /* free this only after the transfer */ 1593 /* free this only after the transfer */
1539 prev_sv = SvRV (coro_current); 1594 prev_sv = SvRV (coro_current);
1540 ta->prev = SvSTATE (prev_sv); 1595 ta->prev = SvSTATE_hv (prev_sv);
1541 TRANSFER_CHECK (*ta); 1596 TRANSFER_CHECK (*ta);
1542 assert (ta->next->flags & CF_READY); 1597 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1543 ta->next->flags &= ~CF_READY; 1598 ta->next->flags &= ~CF_READY;
1544 SvRV_set (coro_current, next_sv); 1599 SvRV_set (coro_current, next_sv);
1545 1600
1546 LOCK;
1547 free_coro_mortal (aTHX); 1601 free_coro_mortal (aTHX);
1548 coro_mortal = prev_sv; 1602 coro_mortal = prev_sv;
1549 UNLOCK;
1550} 1603}
1551 1604
1552static void 1605INLINE void
1553prepare_cede (pTHX_ struct transfer_args *ta) 1606prepare_cede (pTHX_ struct coro_transfer_args *ta)
1554{ 1607{
1555 api_ready (coro_current); 1608 api_ready (aTHX_ coro_current);
1556 prepare_schedule (aTHX_ ta); 1609 prepare_schedule (aTHX_ ta);
1557} 1610}
1558 1611
1612INLINE void
1613prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1614{
1615 SV *prev = SvRV (coro_current);
1616
1617 if (coro_nready)
1618 {
1619 prepare_schedule (aTHX_ ta);
1620 api_ready (aTHX_ prev);
1621 }
1622 else
1623 prepare_nop (aTHX_ ta);
1624}
1625
1626static void
1627api_schedule (pTHX)
1628{
1629 struct coro_transfer_args ta;
1630
1631 prepare_schedule (aTHX_ &ta);
1632 TRANSFER (ta, 1);
1633}
1634
1559static int 1635static int
1560prepare_cede_notself (pTHX_ struct transfer_args *ta) 1636api_cede (pTHX)
1561{ 1637{
1562 if (coro_nready) 1638 struct coro_transfer_args ta;
1563 { 1639
1564 SV *prev = SvRV (coro_current);
1565 prepare_schedule (aTHX_ ta); 1640 prepare_cede (aTHX_ &ta);
1566 api_ready (prev); 1641
1642 if (expect_true (ta.prev != ta.next))
1643 {
1644 TRANSFER (ta, 1);
1567 return 1; 1645 return 1;
1568 } 1646 }
1569 else 1647 else
1570 return 0; 1648 return 0;
1571} 1649}
1572 1650
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 1651static int
1584api_cede (void) 1652api_cede_notself (pTHX)
1585{ 1653{
1586 dTHX; 1654 if (coro_nready)
1655 {
1587 struct transfer_args ta; 1656 struct coro_transfer_args ta;
1588 1657
1589 prepare_cede (aTHX_ &ta); 1658 prepare_cede_notself (aTHX_ &ta);
1590
1591 if (expect_true (ta.prev != ta.next))
1592 {
1593 TRANSFER (ta, 1); 1659 TRANSFER (ta, 1);
1594 return 1; 1660 return 1;
1595 } 1661 }
1596 else 1662 else
1597 return 0; 1663 return 0;
1598} 1664}
1599 1665
1600static int 1666static 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) 1667api_trace (pTHX_ SV *coro_sv, int flags)
1617{ 1668{
1618 dTHX;
1619 struct coro *coro = SvSTATE (coro_sv); 1669 struct coro *coro = SvSTATE (coro_sv);
1620 1670
1621 if (flags & CC_TRACE) 1671 if (flags & CC_TRACE)
1622 { 1672 {
1623 if (!coro->cctx) 1673 if (!coro->cctx)
1624 coro->cctx = cctx_new (); 1674 coro->cctx = cctx_new_run ();
1625 else if (!(coro->cctx->flags & CC_TRACE)) 1675 else if (!(coro->cctx->flags & CC_TRACE))
1626 croak ("cannot enable tracing on coroutine with custom stack"); 1676 croak ("cannot enable tracing on coroutine with custom stack,");
1627 1677
1628 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1678 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1629 } 1679 }
1630 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1680 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1631 { 1681 {
… …
1636 else 1686 else
1637 coro->slot->runops = RUNOPS_DEFAULT; 1687 coro->slot->runops = RUNOPS_DEFAULT;
1638 } 1688 }
1639} 1689}
1640 1690
1691/*****************************************************************************/
1692/* schedule-like-function opcode (SLF) */
1693
1694static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1695static const CV *slf_cv;
1696static SV **slf_argv;
1697static int slf_argc, slf_arga; /* count, allocated */
1698static I32 slf_ax; /* top of stack, for restore */
1699
1700/* this restores the stack in the case we patched the entersub, to */
1701/* recreate the stack frame as perl will on following calls */
1702/* since entersub cleared the stack */
1703static OP *
1704pp_restore (pTHX)
1705{
1706 int i;
1707 SV **SP = PL_stack_base + slf_ax;
1708
1709 PUSHMARK (SP);
1710
1711 EXTEND (SP, slf_argc + 1);
1712
1713 for (i = 0; i < slf_argc; ++i)
1714 PUSHs (sv_2mortal (slf_argv [i]));
1715
1716 PUSHs ((SV *)CvGV (slf_cv));
1717
1718 RETURNOP (slf_restore.op_first);
1719}
1720
1641static int 1721static void
1642coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1722slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1643{ 1723{
1644 AV *padlist; 1724 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} 1725}
1651 1726
1652static MGVTBL coro_gensub_vtbl = { 1727static void
1653 0, 0, 0, 0, 1728slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1654 coro_gensub_free 1729{
1655}; 1730 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1731
1732 frame->prepare = slf_prepare_set_stacklevel;
1733 frame->check = slf_check_nop;
1734 frame->data = (void *)SvIV (arg [0]);
1735}
1736
1737static void
1738slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1739{
1740 SV **arg = (SV **)slf_frame.data;
1741
1742 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1743}
1744
1745static void
1746slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1747{
1748 if (items != 2)
1749 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1750
1751 frame->prepare = slf_prepare_transfer;
1752 frame->check = slf_check_nop;
1753 frame->data = (void *)arg; /* let's hope it will stay valid */
1754}
1755
1756static void
1757slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1758{
1759 frame->prepare = prepare_schedule;
1760 frame->check = slf_check_nop;
1761}
1762
1763static void
1764slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1765{
1766 frame->prepare = prepare_cede;
1767 frame->check = slf_check_nop;
1768}
1769
1770static void
1771slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1772{
1773 frame->prepare = prepare_cede_notself;
1774 frame->check = slf_check_nop;
1775}
1776
1777/* we hijack an hopefully unused CV flag for our purposes */
1778#define CVf_SLF 0x4000
1779
1780/*
1781 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same
1783 * stack offset
1784 * SLF stands for "schedule-like-function".
1785 */
1786static OP *
1787pp_slf (pTHX)
1788{
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790
1791 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare))
1795 {
1796 /* first iteration */
1797 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */
1800 SV *gv = *sp;
1801
1802 /* do a quick consistency check on the "function" object, and if it isn't */
1803 /* for us, divert to the real entersub */
1804 if (SvTYPE (gv) != SVt_PVGV
1805 || !GvCV (gv)
1806 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1807 return PL_ppaddr[OP_ENTERSUB](aTHX);
1808
1809 if (!(PL_op->op_flags & OPf_STACKED))
1810 {
1811 /* ampersand-form of call, use @_ instead of stack */
1812 AV *av = GvAV (PL_defgv);
1813 arg = AvARRAY (av);
1814 items = AvFILLp (av) + 1;
1815 }
1816
1817 /* now call the init function, which needs to set up slf_frame */
1818 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1819 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1820
1821 /* pop args */
1822 SP = PL_stack_base + POPMARK;
1823
1824 PUTBACK;
1825 }
1826
1827 /* now that we have a slf_frame, interpret it! */
1828 /* we use a callback system not to make the code needlessly */
1829 /* complicated, but so we can run multiple perl coros from one cctx */
1830
1831 do
1832 {
1833 struct coro_transfer_args ta;
1834
1835 slf_frame.prepare (aTHX_ &ta);
1836 TRANSFER (ta, 0);
1837
1838 checkmark = PL_stack_sp - PL_stack_base;
1839 }
1840 while (slf_frame.check (aTHX_ &slf_frame));
1841
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843
1844 /* return value handling - mostly like entersub */
1845 {
1846 dSP;
1847 SV **bot = PL_stack_base + checkmark;
1848 int gimme = GIMME_V;
1849
1850 /* make sure we put something on the stack in scalar context */
1851 if (gimme == G_SCALAR)
1852 {
1853 if (sp == bot)
1854 XPUSHs (&PL_sv_undef);
1855
1856 SP = bot + 1;
1857 }
1858
1859 PUTBACK;
1860 }
1861
1862 /* exception handling */
1863 if (expect_false (coro_throw))
1864 {
1865 SV *exception = sv_2mortal (coro_throw);
1866
1867 coro_throw = 0;
1868 sv_setsv (ERRSV, exception);
1869 croak (0);
1870 }
1871
1872 return NORMAL;
1873}
1874
1875static void
1876api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1877{
1878 int i;
1879 SV **arg = PL_stack_base + ax;
1880 int items = PL_stack_sp - arg + 1;
1881
1882 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1883
1884 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1885 && PL_op->op_ppaddr != pp_slf)
1886 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1887
1888 CvFLAGS (cv) |= CVf_SLF;
1889 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1890 slf_cv = cv;
1891
1892 /* we patch the op, and then re-run the whole call */
1893 /* we have to put the same argument on the stack for this to work */
1894 /* and this will be done by pp_restore */
1895 slf_restore.op_next = (OP *)&slf_restore;
1896 slf_restore.op_type = OP_CUSTOM;
1897 slf_restore.op_ppaddr = pp_restore;
1898 slf_restore.op_first = PL_op;
1899
1900 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1901
1902 if (PL_op->op_flags & OPf_STACKED)
1903 {
1904 if (items > slf_arga)
1905 {
1906 slf_arga = items;
1907 free (slf_argv);
1908 slf_argv = malloc (slf_arga * sizeof (SV *));
1909 }
1910
1911 slf_argc = items;
1912
1913 for (i = 0; i < items; ++i)
1914 slf_argv [i] = SvREFCNT_inc (arg [i]);
1915 }
1916 else
1917 slf_argc = 0;
1918
1919 PL_op->op_ppaddr = pp_slf;
1920 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1921
1922 PL_op = (OP *)&slf_restore;
1923}
1656 1924
1657/*****************************************************************************/ 1925/*****************************************************************************/
1658/* PerlIO::cede */ 1926/* PerlIO::cede */
1659 1927
1660typedef struct 1928typedef struct
… …
1688 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 1956 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1689 double now = nvtime (); 1957 double now = nvtime ();
1690 1958
1691 if (now >= self->next) 1959 if (now >= self->next)
1692 { 1960 {
1693 api_cede (); 1961 api_cede (aTHX);
1694 self->next = now + self->every; 1962 self->next = now + self->every;
1695 } 1963 }
1696 1964
1697 return PerlIOBuf_flush (aTHX_ f); 1965 return PerlIOBuf_flush (aTHX_ f);
1698} 1966}
… …
1727 PerlIOBuf_get_ptr, 1995 PerlIOBuf_get_ptr,
1728 PerlIOBuf_get_cnt, 1996 PerlIOBuf_get_cnt,
1729 PerlIOBuf_set_ptrcnt, 1997 PerlIOBuf_set_ptrcnt,
1730}; 1998};
1731 1999
2000/*****************************************************************************/
2001/* Coro::Semaphore */
2002
2003static void
2004coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2005{
2006 SV *count_sv = AvARRAY (av)[0];
2007 IV count = SvIVX (count_sv);
2008
2009 count += adjust;
2010 SvIVX (count_sv) = count;
2011
2012 /* now wake up as many waiters as are expected to lock */
2013 while (count > 0 && AvFILLp (av) > 0)
2014 {
2015 SV *cb;
2016
2017 /* swap first two elements so we can shift a waiter */
2018 AvARRAY (av)[0] = AvARRAY (av)[1];
2019 AvARRAY (av)[1] = count_sv;
2020 cb = av_shift (av);
2021
2022 if (SvOBJECT (cb))
2023 api_ready (aTHX_ cb);
2024 else
2025 croak ("callbacks not yet supported");
2026
2027 SvREFCNT_dec (cb);
2028
2029 --count;
2030 }
2031}
2032
2033static void
2034coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2035{
2036 /* call $sem->adjust (0) to possibly wake up some other waiters */
2037 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2038}
2039
2040static int
2041slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2042{
2043 AV *av = (AV *)frame->data;
2044 SV *count_sv = AvARRAY (av)[0];
2045
2046 if (SvIVX (count_sv) > 0)
2047 {
2048 SvSTATE_current->on_destroy = 0;
2049 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2050 return 0;
2051 }
2052 else
2053 {
2054 int i;
2055 /* if we were woken up but can't down, we look through the whole */
2056 /* waiters list and only add us if we aren't in there already */
2057 /* this avoids some degenerate memory usage cases */
2058
2059 for (i = 1; i <= AvFILLp (av); ++i)
2060 if (AvARRAY (av)[i] == SvRV (coro_current))
2061 return 1;
2062
2063 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2064 return 1;
2065 }
2066}
2067
2068static void
2069slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2070{
2071 AV *av = (AV *)SvRV (arg [0]);
2072
2073 if (SvIVX (AvARRAY (av)[0]) > 0)
2074 {
2075 frame->data = (void *)av;
2076 frame->prepare = prepare_nop;
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 }
2079 else
2080 {
2081 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2082
2083 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2084 frame->prepare = prepare_schedule;
2085
2086 /* to avoid race conditions when a woken-up coro gets terminated */
2087 /* we arrange for a temporary on_destroy that calls adjust (0) */
2088 assert (!SvSTATE_current->on_destroy);//D
2089 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2090 }
2091
2092 frame->check = slf_check_semaphore_down;
2093
2094}
2095
2096/*****************************************************************************/
2097/* gensub: simple closure generation utility */
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{
2107 CV *cv = (CV *)newSV (0);
2108
2109 sv_upgrade ((SV *)cv, SVt_PVCV);
2110
2111 CvANON_on (cv);
2112 CvISXSUB_on (cv);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115
2116 return newRV_noinc ((SV *)cv);
2117}
2118
2119/*****************************************************************************/
2120/* Coro::AIO */
2121
2122#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2123
2124/* helper storage struct */
2125struct io_state
2126{
2127 int errorno;
2128 I32 laststype; /* U16 in 5.10.0 */
2129 int laststatval;
2130 Stat_t statcache;
2131};
2132
2133static void
2134coro_aio_callback (pTHX_ CV *cv)
2135{
2136 dXSARGS;
2137 AV *state = (AV *)GENSUB_ARG;
2138 SV *coro = av_pop (state);
2139 SV *data_sv = newSV (sizeof (struct io_state));
2140
2141 av_extend (state, items);
2142
2143 sv_upgrade (data_sv, SVt_PV);
2144 SvCUR_set (data_sv, sizeof (struct io_state));
2145 SvPOK_only (data_sv);
2146
2147 {
2148 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2149
2150 data->errorno = errno;
2151 data->laststype = PL_laststype;
2152 data->laststatval = PL_laststatval;
2153 data->statcache = PL_statcache;
2154 }
2155
2156 /* now build the result vector out of all the parameters and the data_sv */
2157 {
2158 int i;
2159
2160 for (i = 0; i < items; ++i)
2161 av_push (state, SvREFCNT_inc_NN (ST (i)));
2162 }
2163
2164 av_push (state, data_sv);
2165
2166 api_ready (aTHX_ coro);
2167 SvREFCNT_dec (coro);
2168 SvREFCNT_dec ((AV *)state);
2169}
2170
2171static int
2172slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2173{
2174 AV *state = (AV *)frame->data;
2175
2176 /* one element that is an RV? repeat! */
2177 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2178 return 1;
2179
2180 /* restore status */
2181 {
2182 SV *data_sv = av_pop (state);
2183 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2184
2185 errno = data->errorno;
2186 PL_laststype = data->laststype;
2187 PL_laststatval = data->laststatval;
2188 PL_statcache = data->statcache;
2189
2190 SvREFCNT_dec (data_sv);
2191 }
2192
2193 /* push result values */
2194 {
2195 dSP;
2196 int i;
2197
2198 EXTEND (SP, AvFILLp (state) + 1);
2199 for (i = 0; i <= AvFILLp (state); ++i)
2200 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2201
2202 PUTBACK;
2203 }
2204
2205 return 0;
2206}
2207
2208static void
2209slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2210{
2211 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2212 SV *coro_hv = SvRV (coro_current);
2213 struct coro *coro = SvSTATE_hv (coro_hv);
2214
2215 /* put our coroutine id on the state arg */
2216 av_push (state, SvREFCNT_inc_NN (coro_hv));
2217
2218 /* first see whether we have a non-zero priority and set it as AIO prio */
2219 if (coro->prio)
2220 {
2221 dSP;
2222
2223 static SV *prio_cv;
2224 static SV *prio_sv;
2225
2226 if (expect_false (!prio_cv))
2227 {
2228 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2229 prio_sv = newSViv (0);
2230 }
2231
2232 PUSHMARK (SP);
2233 sv_setiv (prio_sv, coro->prio);
2234 XPUSHs (prio_sv);
2235
2236 PUTBACK;
2237 call_sv (prio_cv, G_VOID | G_DISCARD);
2238 }
2239
2240 /* now call the original request */
2241 {
2242 dSP;
2243 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2244 int i;
2245
2246 PUSHMARK (SP);
2247
2248 /* first push all args to the stack */
2249 EXTEND (SP, items + 1);
2250
2251 for (i = 0; i < items; ++i)
2252 PUSHs (arg [i]);
2253
2254 /* now push the callback closure */
2255 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2256
2257 /* now call the AIO function - we assume our request is uncancelable */
2258 PUTBACK;
2259 call_sv ((SV *)req, G_VOID | G_DISCARD);
2260 }
2261
2262 /* now that the requets is going, we loop toll we have a result */
2263 frame->data = (void *)state;
2264 frame->prepare = prepare_schedule;
2265 frame->check = slf_check_aio_req;
2266}
2267
2268static void
2269coro_aio_req_xs (pTHX_ CV *cv)
2270{
2271 dXSARGS;
2272
2273 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2274
2275 XSRETURN_EMPTY;
2276}
2277
2278/*****************************************************************************/
1732 2279
1733MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2280MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1734 2281
1735PROTOTYPES: DISABLE 2282PROTOTYPES: DISABLE
1736 2283
1737BOOT: 2284BOOT:
1738{ 2285{
1739#ifdef USE_ITHREADS 2286#ifdef USE_ITHREADS
1740 MUTEX_INIT (&coro_mutex); 2287# if CORO_PTHREAD
2288 coro_thx = PERL_GET_CONTEXT;
2289# endif
1741#endif 2290#endif
1742 BOOT_PAGESIZE; 2291 BOOT_PAGESIZE;
1743 2292
1744 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2293 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1745 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2294 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1763 main_top_env = PL_top_env; 2312 main_top_env = PL_top_env;
1764 2313
1765 while (main_top_env->je_prev) 2314 while (main_top_env->je_prev)
1766 main_top_env = main_top_env->je_prev; 2315 main_top_env = main_top_env->je_prev;
1767 2316
2317 {
2318 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2319
2320 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2321 hv_store_ent (PL_custom_op_names, slf,
2322 newSVpv ("coro_slf", 0), 0);
2323
2324 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2325 hv_store_ent (PL_custom_op_descs, slf,
2326 newSVpv ("coro schedule like function", 0), 0);
2327 }
2328
1768 coroapi.ver = CORO_API_VERSION; 2329 coroapi.ver = CORO_API_VERSION;
1769 coroapi.rev = CORO_API_REVISION; 2330 coroapi.rev = CORO_API_REVISION;
2331
1770 coroapi.transfer = api_transfer; 2332 coroapi.transfer = api_transfer;
2333
2334 coroapi.sv_state = SvSTATE_;
2335 coroapi.execute_slf = api_execute_slf;
2336 coroapi.prepare_nop = prepare_nop;
2337 coroapi.prepare_schedule = prepare_schedule;
2338 coroapi.prepare_cede = prepare_cede;
2339 coroapi.prepare_cede_notself = prepare_cede_notself;
1771 2340
1772 { 2341 {
1773 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2342 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1774 2343
1775 if (!svp) croak ("Time::HiRes is required"); 2344 if (!svp) croak ("Time::HiRes is required");
… …
1808 av_push (coro->args, newSVsv (ST (i))); 2377 av_push (coro->args, newSVsv (ST (i)));
1809} 2378}
1810 OUTPUT: 2379 OUTPUT:
1811 RETVAL 2380 RETVAL
1812 2381
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 2382void
1817_set_stacklevel (...) 2383_set_stacklevel (...)
1818 ALIAS: 2384 CODE:
1819 Coro::State::transfer = 1 2385 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 2386
1827 PUTBACK; 2387void
1828 switch (ix) 2388transfer (...)
1829 { 2389 PROTOTYPE: $$
1830 case 0: 2390 CODE:
1831 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2391 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 2392
1865bool 2393bool
1866_destroy (SV *coro_sv) 2394_destroy (SV *coro_sv)
1867 CODE: 2395 CODE:
1868 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2396 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1875 CODE: 2403 CODE:
1876 _exit (code); 2404 _exit (code);
1877 2405
1878int 2406int
1879cctx_stacksize (int new_stacksize = 0) 2407cctx_stacksize (int new_stacksize = 0)
2408 PROTOTYPE: ;$
1880 CODE: 2409 CODE:
1881 RETVAL = coro_stacksize; 2410 RETVAL = cctx_stacksize;
1882 if (new_stacksize) 2411 if (new_stacksize)
2412 {
1883 coro_stacksize = new_stacksize; 2413 cctx_stacksize = new_stacksize;
2414 ++cctx_gen;
2415 }
1884 OUTPUT: 2416 OUTPUT:
1885 RETVAL 2417 RETVAL
1886 2418
1887int 2419int
2420cctx_max_idle (int max_idle = 0)
2421 PROTOTYPE: ;$
2422 CODE:
2423 RETVAL = cctx_max_idle;
2424 if (max_idle > 1)
2425 cctx_max_idle = max_idle;
2426 OUTPUT:
2427 RETVAL
2428
2429int
1888cctx_count () 2430cctx_count ()
2431 PROTOTYPE:
1889 CODE: 2432 CODE:
1890 RETVAL = cctx_count; 2433 RETVAL = cctx_count;
1891 OUTPUT: 2434 OUTPUT:
1892 RETVAL 2435 RETVAL
1893 2436
1894int 2437int
1895cctx_idle () 2438cctx_idle ()
2439 PROTOTYPE:
1896 CODE: 2440 CODE:
1897 RETVAL = cctx_idle; 2441 RETVAL = cctx_idle;
1898 OUTPUT: 2442 OUTPUT:
1899 RETVAL 2443 RETVAL
1900 2444
1901void 2445void
1902list () 2446list ()
2447 PROTOTYPE:
1903 PPCODE: 2448 PPCODE:
1904{ 2449{
1905 struct coro *coro; 2450 struct coro *coro;
1906 for (coro = coro_first; coro; coro = coro->next) 2451 for (coro = coro_first; coro; coro = coro->next)
1907 if (coro->hv) 2452 if (coro->hv)
… …
1966 RETVAL = boolSV (coro->flags & ix); 2511 RETVAL = boolSV (coro->flags & ix);
1967 OUTPUT: 2512 OUTPUT:
1968 RETVAL 2513 RETVAL
1969 2514
1970void 2515void
2516throw (Coro::State self, SV *throw = &PL_sv_undef)
2517 PROTOTYPE: $;$
2518 CODE:
2519{
2520 struct coro *current = SvSTATE_current;
2521 SV **throwp = self == current ? &coro_throw : &self->throw;
2522 SvREFCNT_dec (*throwp);
2523 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2524}
2525
2526void
1971api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2527api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2528 PROTOTYPE: $;$
2529 C_ARGS: aTHX_ coro, flags
1972 2530
1973SV * 2531SV *
1974has_cctx (Coro::State coro) 2532has_cctx (Coro::State coro)
1975 PROTOTYPE: $ 2533 PROTOTYPE: $
1976 CODE: 2534 CODE:
… …
1984 CODE: 2542 CODE:
1985 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2543 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1986 OUTPUT: 2544 OUTPUT:
1987 RETVAL 2545 RETVAL
1988 2546
1989IV 2547UV
1990rss (Coro::State coro) 2548rss (Coro::State coro)
1991 PROTOTYPE: $ 2549 PROTOTYPE: $
1992 ALIAS: 2550 ALIAS:
1993 usecount = 1 2551 usecount = 1
1994 CODE: 2552 CODE:
… …
2000 OUTPUT: 2558 OUTPUT:
2001 RETVAL 2559 RETVAL
2002 2560
2003void 2561void
2004force_cctx () 2562force_cctx ()
2563 PROTOTYPE:
2005 CODE: 2564 CODE:
2006 struct coro *coro = SvSTATE (coro_current);
2007 coro->cctx->idle_sp = 0; 2565 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 2566
2016void 2567void
2017swap_defsv (Coro::State self) 2568swap_defsv (Coro::State self)
2018 PROTOTYPE: $ 2569 PROTOTYPE: $
2019 ALIAS: 2570 ALIAS:
2020 swap_defav = 1 2571 swap_defav = 1
2021 CODE: 2572 CODE:
2022 if (!self->slot) 2573 if (!self->slot)
2023 croak ("cannot swap state with coroutine that has no saved state"); 2574 croak ("cannot swap state with coroutine that has no saved state,");
2024 else 2575 else
2025 { 2576 {
2026 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2577 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2027 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2578 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2028 2579
2029 SV *tmp = *src; *src = *dst; *dst = tmp; 2580 SV *tmp = *src; *src = *dst; *dst = tmp;
2030 } 2581 }
2582
2031 2583
2032MODULE = Coro::State PACKAGE = Coro 2584MODULE = Coro::State PACKAGE = Coro
2033 2585
2034BOOT: 2586BOOT:
2035{ 2587{
… …
2053 2605
2054 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2606 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2055 coro_ready[i] = newAV (); 2607 coro_ready[i] = newAV ();
2056 2608
2057 { 2609 {
2058 SV *sv = perl_get_sv ("Coro::API", TRUE); 2610 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2059 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2060 2611
2061 coroapi.schedule = api_schedule; 2612 coroapi.schedule = api_schedule;
2062 coroapi.cede = api_cede; 2613 coroapi.cede = api_cede;
2063 coroapi.cede_notself = api_cede_notself; 2614 coroapi.cede_notself = api_cede_notself;
2064 coroapi.ready = api_ready; 2615 coroapi.ready = api_ready;
2065 coroapi.is_ready = api_is_ready; 2616 coroapi.is_ready = api_is_ready;
2066 coroapi.nready = &coro_nready; 2617 coroapi.nready = coro_nready;
2067 coroapi.current = coro_current; 2618 coroapi.current = coro_current;
2068 2619
2069 GCoroAPI = &coroapi; 2620 GCoroAPI = &coroapi;
2070 sv_setiv (sv, (IV)&coroapi); 2621 sv_setiv (sv, (IV)&coroapi);
2071 SvREADONLY_on (sv); 2622 SvREADONLY_on (sv);
2072 } 2623 }
2073} 2624}
2625
2626void
2627schedule (...)
2628 CODE:
2629 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2630
2631void
2632cede (...)
2633 CODE:
2634 CORO_EXECUTE_SLF_XS (slf_init_cede);
2635
2636void
2637cede_notself (...)
2638 CODE:
2639 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2074 2640
2075void 2641void
2076_set_current (SV *current) 2642_set_current (SV *current)
2077 PROTOTYPE: $ 2643 PROTOTYPE: $
2078 CODE: 2644 CODE:
… …
2081 2647
2082void 2648void
2083_set_readyhook (SV *hook) 2649_set_readyhook (SV *hook)
2084 PROTOTYPE: $ 2650 PROTOTYPE: $
2085 CODE: 2651 CODE:
2086 LOCK;
2087 SvREFCNT_dec (coro_readyhook); 2652 SvREFCNT_dec (coro_readyhook);
2088 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2653 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2089 UNLOCK;
2090 2654
2091int 2655int
2092prio (Coro::State coro, int newprio = 0) 2656prio (Coro::State coro, int newprio = 0)
2657 PROTOTYPE: $;$
2093 ALIAS: 2658 ALIAS:
2094 nice = 1 2659 nice = 1
2095 CODE: 2660 CODE:
2096{ 2661{
2097 RETVAL = coro->prio; 2662 RETVAL = coro->prio;
… …
2112 2677
2113SV * 2678SV *
2114ready (SV *self) 2679ready (SV *self)
2115 PROTOTYPE: $ 2680 PROTOTYPE: $
2116 CODE: 2681 CODE:
2117 RETVAL = boolSV (api_ready (self)); 2682 RETVAL = boolSV (api_ready (aTHX_ self));
2118 OUTPUT: 2683 OUTPUT:
2119 RETVAL 2684 RETVAL
2120 2685
2121int 2686int
2122nready (...) 2687nready (...)
… …
2129# for async_pool speedup 2694# for async_pool speedup
2130void 2695void
2131_pool_1 (SV *cb) 2696_pool_1 (SV *cb)
2132 CODE: 2697 CODE:
2133{ 2698{
2134 struct coro *coro = SvSTATE (coro_current);
2135 HV *hv = (HV *)SvRV (coro_current); 2699 HV *hv = (HV *)SvRV (coro_current);
2700 struct coro *coro = SvSTATE_hv ((SV *)hv);
2136 AV *defav = GvAV (PL_defgv); 2701 AV *defav = GvAV (PL_defgv);
2137 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2702 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2138 AV *invoke_av; 2703 AV *invoke_av;
2139 int i, len; 2704 int i, len;
2140 2705
… …
2161 { 2726 {
2162 av_fill (defav, len - 1); 2727 av_fill (defav, len - 1);
2163 for (i = 0; i < len; ++i) 2728 for (i = 0; i < len; ++i)
2164 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 2729 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2165 } 2730 }
2166
2167 SvREFCNT_dec (invoke);
2168} 2731}
2169 2732
2170void 2733void
2171_pool_2 (SV *cb) 2734_pool_2 (SV *cb)
2172 CODE: 2735 CODE:
2173{ 2736{
2174 struct coro *coro = SvSTATE (coro_current); 2737 HV *hv = (HV *)SvRV (coro_current);
2738 struct coro *coro = SvSTATE_hv ((SV *)hv);
2175 2739
2176 sv_setsv (cb, &PL_sv_undef); 2740 sv_setsv (cb, &PL_sv_undef);
2177 2741
2178 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2742 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2179 coro->saved_deffh = 0; 2743 coro->saved_deffh = 0;
2180 2744
2181 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2745 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2182 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2746 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2183 { 2747 {
2184 SV *old = PL_diehook; 2748 SV *old = PL_diehook;
2185 PL_diehook = 0; 2749 PL_diehook = 0;
2186 SvREFCNT_dec (old); 2750 SvREFCNT_dec (old);
2187 croak ("\3async_pool terminate\2\n"); 2751 croak ("\3async_pool terminate\2\n");
2188 } 2752 }
2189 2753
2190 av_clear (GvAV (PL_defgv)); 2754 av_clear (GvAV (PL_defgv));
2191 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2755 hv_store (hv, "desc", sizeof ("desc") - 1,
2192 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2756 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2193 2757
2194 coro->prio = 0; 2758 coro->prio = 0;
2195 2759
2196 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2760 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2197 api_trace (coro_current, 0); 2761 api_trace (aTHX_ coro_current, 0);
2198 2762
2199 av_push (av_async_pool, newSVsv (coro_current)); 2763 av_push (av_async_pool, newSVsv (coro_current));
2200} 2764}
2201 2765
2202#if 0
2203 2766
2204void 2767MODULE = Coro::State PACKAGE = PerlIO::cede
2205_generator_call (...) 2768
2206 PROTOTYPE: @ 2769BOOT:
2207 PPCODE: 2770 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2208 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr); 2771
2209 xxxx 2772
2210 abort (); 2773MODULE = Coro::State PACKAGE = Coro::Semaphore
2211 2774
2212SV * 2775SV *
2213gensub (SV *sub, ...) 2776new (SV *klass, SV *count_ = 0)
2214 PROTOTYPE: &;@ 2777 CODE:
2215 CODE:
2216{ 2778{
2217 struct coro *coro; 2779 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2218 MAGIC *mg; 2780 AV *av = newAV ();
2219 CV *xcv; 2781 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2220 CV *ncv = (CV *)newSV_type (SVt_PVCV); 2782 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} 2783}
2245 OUTPUT: 2784 OUTPUT:
2246 RETVAL 2785 RETVAL
2247 2786
2248#endif 2787SV *
2249 2788count (SV *self)
2250 2789 CODE:
2251MODULE = Coro::State PACKAGE = Coro::AIO 2790 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2791 OUTPUT:
2792 RETVAL
2252 2793
2253void 2794void
2254_get_state (SV *self) 2795up (SV *self, int adjust = 1)
2255 PPCODE: 2796 ALIAS:
2256{ 2797 adjust = 1
2257 AV *defav = GvAV (PL_defgv); 2798 CODE:
2258 AV *av = newAV (); 2799 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 2800
2282void 2801void
2283_set_state (SV *state) 2802down (SV *self)
2284 PROTOTYPE: $ 2803 CODE:
2285 PPCODE: 2804 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2805
2806void
2807try (SV *self)
2808 PPCODE:
2286{ 2809{
2287 AV *av = (AV *)SvRV (state); 2810 AV *av = (AV *)SvRV (self);
2288 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 2811 SV *count_sv = AvARRAY (av)[0];
2812 IV count = SvIVX (count_sv);
2813
2814 if (count > 0)
2815 {
2816 --count;
2817 SvIVX (count_sv) = count;
2818 XSRETURN_YES;
2819 }
2820 else
2821 XSRETURN_NO;
2822}
2823
2824void
2825waiters (SV *self)
2826 CODE:
2827{
2828 AV *av = (AV *)SvRV (self);
2829
2830 if (GIMME_V == G_SCALAR)
2831 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2832 else
2833 {
2289 int i; 2834 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)); 2835 EXTEND (SP, AvFILLp (av) + 1 - 1);
2297 for (i = 0; i < AvFILLp (av); ++i) 2836 for (i = 1; i <= AvFILLp (av); ++i)
2298 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 2837 PUSHs (newSVsv (AvARRAY (av)[i]));
2838 }
2299} 2839}
2300 2840
2301 2841
2302MODULE = Coro::State PACKAGE = Coro::AnyEvent 2842MODULE = Coro::State PACKAGE = Coro::AnyEvent
2303 2843
2304BOOT: 2844BOOT:
2305 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2845 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2306 2846
2307SV * 2847void
2308_schedule (...) 2848_schedule (...)
2309 PROTOTYPE: @
2310 CODE: 2849 CODE:
2311{ 2850{
2312 static int incede; 2851 static int incede;
2313 2852
2314 api_cede_notself (); 2853 api_cede_notself (aTHX);
2315 2854
2316 ++incede; 2855 ++incede;
2317 while (coro_nready >= incede && api_cede ()) 2856 while (coro_nready >= incede && api_cede (aTHX))
2318 ; 2857 ;
2319 2858
2320 sv_setsv (sv_activity, &PL_sv_undef); 2859 sv_setsv (sv_activity, &PL_sv_undef);
2321 if (coro_nready >= incede) 2860 if (coro_nready >= incede)
2322 { 2861 {
… …
2328 2867
2329 --incede; 2868 --incede;
2330} 2869}
2331 2870
2332 2871
2333MODULE = Coro::State PACKAGE = PerlIO::cede 2872MODULE = Coro::State PACKAGE = Coro::AIO
2334 2873
2335BOOT: 2874void
2336 PerlIO_define_layer (aTHX_ &PerlIO_cede); 2875_register (char *target, char *proto, SV *req)
2876 CODE:
2877{
2878 HV *st;
2879 GV *gvp;
2880 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2881 /* newXSproto doesn't return the CV on 5.8 */
2882 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2883 sv_setpv ((SV *)slf_cv, proto);
2884 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2885}
2886

Diff Legend

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