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Comparing Coro/Coro/State.xs (file contents):
Revision 1.245 by root, Mon Sep 22 05:40:21 2008 UTC vs.
Revision 1.285 by root, Mon Nov 17 04:17:20 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
… …
45# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
46#endif 47#endif
47 48
48#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
49# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
50# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51#else
52# define REGISTER_STACK(cctx,start,end)
53#endif 51#endif
54 52
55/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
56#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
57 55
58#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
59 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
60 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
80# ifndef IS_PADCONST 78# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
82# endif 80# endif
83#endif 81#endif
84 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
85/* 5.8.8 */ 93/* 5.8.8 */
86#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
87# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
88#endif 96#endif
89#ifndef newSV 97#ifndef newSV
90# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
91#endif 99#endif
92 100
93/* 5.11 */
94#ifndef CxHASARGS
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96#endif
97
98/* 5.8.7 */ 101/* 5.8.7 */
99#ifndef SvRV_set 102#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
101#endif 104#endif
102 105
… …
113# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif 117#endif
115 118
116/* 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
117 * portable way as possible. */ 120 * portable way as possible. */
118#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
119#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
120 126
121#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
122 128
123#if __GNUC__ >= 3 129#if __GNUC__ >= 3
124# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
127#else 133#else
128# define attribute(x) 134# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
131#endif 137#endif
132 138
133#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
135 141
136#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
137 143
138#include "CoroAPI.h" 144#include "CoroAPI.h"
139 145
140#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
141static perl_mutex coro_mutex; 147# if CORO_PTHREAD
142# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
143# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# endif
144#else
145# define LOCK (void)0
146# define UNLOCK (void)0
147#endif 150#endif
148 151
149/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
150struct io_state 153struct io_state
151{ 154{
155 AV *res;
152 int errorno; 156 int errorno;
153 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
154 int laststatval; 158 int laststatval;
155 Stat_t statcache; 159 Stat_t statcache;
156}; 160};
157 161
162static double (*nvtime)(); /* so why doesn't it take void? */
163
164static U32 cctx_gen;
158static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 168static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
164 171
165static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 174static SV *rv_diehook;
168static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189}; 196};
190 197
191/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
192typedef struct coro_cctx { 199typedef struct coro_cctx
200{
193 struct coro_cctx *next; 201 struct coro_cctx *next;
194 202
195 /* the stack */ 203 /* the stack */
196 void *sptr; 204 void *sptr;
197 size_t ssize; 205 size_t ssize;
… …
200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202 JMPENV *top_env; 210 JMPENV *top_env;
203 coro_context cctx; 211 coro_context cctx;
204 212
213 U32 gen;
205#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
206 int valgrind_id; 215 int valgrind_id;
207#endif 216#endif
208 unsigned char flags; 217 unsigned char flags;
209} coro_cctx; 218} coro_cctx;
… …
214 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
215 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
216}; 225};
217 226
218/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
219typedef struct { 228typedef struct
229{
220 SV *defsv; 230 SV *defsv;
221 AV *defav; 231 AV *defav;
222 SV *errsv; 232 SV *errsv;
223 SV *irsgv; 233 SV *irsgv;
224#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
228 238
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
230 240
231/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
232struct coro { 242struct coro {
233 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 244 coro_cctx *cctx;
235 245
236 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
237 AV *mainstack; 248 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
239 250
240 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
241 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
242 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
243 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
244 256
245 /* statistics */ 257 /* statistics */
246 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
247 259
248 /* coro process data */ 260 /* coro process data */
… …
256 struct coro *next, *prev; 268 struct coro *next, *prev;
257}; 269};
258 270
259typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
260typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273
274/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */
278static SV *coro_throw;
261 279
262/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
263 281
264#define PRIO_MAX 3 282#define PRIO_MAX 3
265#define PRIO_HIGH 1 283#define PRIO_HIGH 1
… …
269#define PRIO_MIN -4 287#define PRIO_MIN -4
270 288
271/* for Coro.pm */ 289/* for Coro.pm */
272static SV *coro_current; 290static SV *coro_current;
273static SV *coro_readyhook; 291static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
275static int coro_nready;
276static struct coro *coro_first; 293static struct coro *coro_first;
294#define coro_nready coroapi.nready
277 295
278/** lowlevel stuff **********************************************************/ 296/** lowlevel stuff **********************************************************/
279 297
280static SV * 298static SV *
281coro_get_sv (pTHX_ const char *name, int create) 299coro_get_sv (pTHX_ const char *name, int create)
… …
321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322#endif 340#endif
323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324 --AvFILLp (padlist); 342 --AvFILLp (padlist);
325 343
326 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
327 av_store (newpadlist, 1, (SV *)newpad); 345 av_store (newpadlist, 1, (SV *)newpad);
328 346
329 return newpadlist; 347 return newpadlist;
330} 348}
331 349
… …
374static MGVTBL coro_cv_vtbl = { 392static MGVTBL coro_cv_vtbl = {
375 0, 0, 0, 0, 393 0, 0, 0, 0,
376 coro_cv_free 394 coro_cv_free
377}; 395};
378 396
379#define CORO_MAGIC(sv,type) \ 397#define CORO_MAGIC(sv, type) \
380 SvMAGIC (sv) \ 398 expect_true (SvMAGIC (sv)) \
381 ? SvMAGIC (sv)->mg_type == type \ 399 ? expect_true (SvMAGIC (sv)->mg_type == type) \
382 ? SvMAGIC (sv) \ 400 ? SvMAGIC (sv) \
383 : mg_find (sv, type) \ 401 : mg_find (sv, type) \
384 : 0 402 : 0
385 403
386#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
387#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 405#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
388 406
389static struct coro * 407INLINE struct coro *
390SvSTATE_ (pTHX_ SV *coro) 408SvSTATE_ (pTHX_ SV *coro)
391{ 409{
392 HV *stash; 410 HV *stash;
393 MAGIC *mg; 411 MAGIC *mg;
394 412
… …
409 mg = CORO_MAGIC_state (coro); 427 mg = CORO_MAGIC_state (coro);
410 return (struct coro *)mg->mg_ptr; 428 return (struct coro *)mg->mg_ptr;
411} 429}
412 430
413#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* fastert than SvSTATE, but expects a coroutine hv */
434INLINE struct coro *
435SvSTATE_hv (SV *sv)
436{
437 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
438 ? SvMAGIC (sv)
439 : mg_find (sv, CORO_MAGIC_type_state);
440
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
414 445
415/* the next two functions merely cache the padlists */ 446/* the next two functions merely cache the padlists */
416static void 447static void
417get_padlist (pTHX_ CV *cv) 448get_padlist (pTHX_ CV *cv)
418{ 449{
… …
485 CvPADLIST (cv) = (AV *)POPs; 516 CvPADLIST (cv) = (AV *)POPs;
486 } 517 }
487 518
488 PUTBACK; 519 PUTBACK;
489 } 520 }
521
522 slf_frame = c->slf_frame;
523 coro_throw = c->throw;
490} 524}
491 525
492static void 526static void
493save_perl (pTHX_ Coro__State c) 527save_perl (pTHX_ Coro__State c)
494{ 528{
529 c->throw = coro_throw;
530 c->slf_frame = slf_frame;
531
495 { 532 {
496 dSP; 533 dSP;
497 I32 cxix = cxstack_ix; 534 I32 cxix = cxstack_ix;
498 PERL_CONTEXT *ccstk = cxstack; 535 PERL_CONTEXT *ccstk = cxstack;
499 PERL_SI *top_si = PL_curstackinfo; 536 PERL_SI *top_si = PL_curstackinfo;
… …
566 #undef VAR 603 #undef VAR
567 } 604 }
568} 605}
569 606
570/* 607/*
571 * allocate various perl stacks. This is an exact copy 608 * allocate various perl stacks. This is almost an exact copy
572 * of perl.c:init_stacks, except that it uses less memory 609 * of perl.c:init_stacks, except that it uses less memory
573 * on the (sometimes correct) assumption that coroutines do 610 * on the (sometimes correct) assumption that coroutines do
574 * not usually need a lot of stackspace. 611 * not usually need a lot of stackspace.
575 */ 612 */
576#if CORO_PREFER_PERL_FUNCTIONS 613#if CORO_PREFER_PERL_FUNCTIONS
… …
619 656
620/* 657/*
621 * destroy the stacks, the callchain etc... 658 * destroy the stacks, the callchain etc...
622 */ 659 */
623static void 660static void
624coro_destroy_stacks (pTHX) 661coro_destruct_stacks (pTHX)
625{ 662{
626 while (PL_curstackinfo->si_next) 663 while (PL_curstackinfo->si_next)
627 PL_curstackinfo = PL_curstackinfo->si_next; 664 PL_curstackinfo = PL_curstackinfo->si_next;
628 665
629 while (PL_curstackinfo) 666 while (PL_curstackinfo)
… …
778 815
779 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 816 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
780} 817}
781 818
782static void 819static void
820prepare_nop (pTHX_ struct coro_transfer_args *ta)
821{
822 /* kind of mega-hacky, but works */
823 ta->next = ta->prev = (struct coro *)ta;
824}
825
826static int
827slf_check_nop (pTHX_ struct CoroSLF *frame)
828{
829 return 0;
830}
831
832static void NOINLINE /* noinline to keep it out of the transfer fast path */
783coro_setup (pTHX_ struct coro *coro) 833coro_setup (pTHX_ struct coro *coro)
784{ 834{
785 /* 835 /*
786 * emulate part of the perl startup here. 836 * emulate part of the perl startup here.
787 */ 837 */
… …
807 GvSV (PL_defgv) = newSV (0); 857 GvSV (PL_defgv) = newSV (0);
808 GvAV (PL_defgv) = coro->args; coro->args = 0; 858 GvAV (PL_defgv) = coro->args; coro->args = 0;
809 GvSV (PL_errgv) = newSV (0); 859 GvSV (PL_errgv) = newSV (0);
810 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 860 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
811 PL_rs = newSVsv (GvSV (irsgv)); 861 PL_rs = newSVsv (GvSV (irsgv));
812 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 862 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
813 863
814 { 864 {
815 dSP; 865 dSP;
816 LOGOP myop; 866 UNOP myop;
817 867
818 Zero (&myop, 1, LOGOP); 868 Zero (&myop, 1, UNOP);
819 myop.op_next = Nullop; 869 myop.op_next = Nullop;
820 myop.op_flags = OPf_WANT_VOID; 870 myop.op_flags = OPf_WANT_VOID;
821 871
822 PUSHMARK (SP); 872 PUSHMARK (SP);
823 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 873 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
826 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 876 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
827 SPAGAIN; 877 SPAGAIN;
828 } 878 }
829 879
830 /* this newly created coroutine might be run on an existing cctx which most 880 /* this newly created coroutine might be run on an existing cctx which most
831 * likely was suspended in set_stacklevel, called from entersub. 881 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
832 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
833 * so we ENTER here for symmetry
834 */ 882 */
835 ENTER; 883 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
836} 884 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
837 885
886 coro_throw = coro->throw;
887}
888
838static void 889static void
839coro_destroy (pTHX_ struct coro *coro) 890coro_destruct (pTHX_ struct coro *coro)
840{ 891{
841 if (!IN_DESTRUCT) 892 if (!IN_DESTRUCT)
842 { 893 {
843 /* restore all saved variables and stuff */ 894 /* restore all saved variables and stuff */
844 LEAVE_SCOPE (0); 895 LEAVE_SCOPE (0);
… …
864 915
865 SvREFCNT_dec (PL_diehook); 916 SvREFCNT_dec (PL_diehook);
866 SvREFCNT_dec (PL_warnhook); 917 SvREFCNT_dec (PL_warnhook);
867 918
868 SvREFCNT_dec (coro->saved_deffh); 919 SvREFCNT_dec (coro->saved_deffh);
869 SvREFCNT_dec (coro->throw); 920 SvREFCNT_dec (coro_throw);
870 921
871 coro_destroy_stacks (aTHX); 922 coro_destruct_stacks (aTHX);
872} 923}
873 924
874static void 925INLINE void
875free_coro_mortal (pTHX) 926free_coro_mortal (pTHX)
876{ 927{
877 if (expect_true (coro_mortal)) 928 if (expect_true (coro_mortal))
878 { 929 {
879 SvREFCNT_dec (coro_mortal); 930 SvREFCNT_dec (coro_mortal);
… …
884static int 935static int
885runops_trace (pTHX) 936runops_trace (pTHX)
886{ 937{
887 COP *oldcop = 0; 938 COP *oldcop = 0;
888 int oldcxix = -2; 939 int oldcxix = -2;
889 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 940 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
890 coro_cctx *cctx = coro->cctx; 941 coro_cctx *cctx = coro->cctx;
891 942
892 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 943 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
893 { 944 {
894 PERL_ASYNC_CHECK (); 945 PERL_ASYNC_CHECK ();
… …
913 : cx->blk_gimme == G_SCALAR ? bot + 1 964 : cx->blk_gimme == G_SCALAR ? bot + 1
914 : bot; 965 : bot;
915 966
916 av_extend (av, top - bot); 967 av_extend (av, top - bot);
917 while (bot < top) 968 while (bot < top)
918 av_push (av, SvREFCNT_inc (*bot++)); 969 av_push (av, SvREFCNT_inc_NN (*bot++));
919 970
920 PL_runops = RUNOPS_DEFAULT; 971 PL_runops = RUNOPS_DEFAULT;
921 ENTER; 972 ENTER;
922 SAVETMPS; 973 SAVETMPS;
923 EXTEND (SP, 3); 974 EXTEND (SP, 3);
… …
1003 1054
1004 TAINT_NOT; 1055 TAINT_NOT;
1005 return 0; 1056 return 0;
1006} 1057}
1007 1058
1059static void
1060prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1061{
1062 ta->prev = (struct coro *)cctx;
1063 ta->next = 0;
1064}
1065
1008/* inject a fake call to Coro::State::_cctx_init into the execution */ 1066/* inject a fake call to Coro::State::_cctx_init into the execution */
1009/* _cctx_init should be careful, as it could be called at almost any time */ 1067/* _cctx_init should be careful, as it could be called at almost any time */
1010/* during execution of a perl program */ 1068/* during execution of a perl program */
1069/* also initialises PL_top_env */
1011static void NOINLINE 1070static void NOINLINE
1012cctx_prepare (pTHX_ coro_cctx *cctx) 1071cctx_prepare (pTHX_ coro_cctx *cctx)
1013{ 1072{
1014 dSP; 1073 dSP;
1015 LOGOP myop; 1074 UNOP myop;
1016 1075
1017 PL_top_env = &PL_start_env; 1076 PL_top_env = &PL_start_env;
1018 1077
1019 if (cctx->flags & CC_TRACE) 1078 if (cctx->flags & CC_TRACE)
1020 PL_runops = runops_trace; 1079 PL_runops = runops_trace;
1021 1080
1022 Zero (&myop, 1, LOGOP); 1081 Zero (&myop, 1, UNOP);
1023 myop.op_next = PL_op; 1082 myop.op_next = PL_op;
1024 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1083 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
1025 1084
1026 PUSHMARK (SP); 1085 PUSHMARK (SP);
1027 EXTEND (SP, 2); 1086 EXTEND (SP, 2);
1028 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1087 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
1029 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1088 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1030 PUTBACK; 1089 PUTBACK;
1031 PL_op = (OP *)&myop; 1090 PL_op = (OP *)&myop;
1032 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1091 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1033 SPAGAIN; 1092 SPAGAIN;
1034} 1093}
1035 1094
1095/* the tail of transfer: execute stuff we can only do after a transfer */
1096INLINE void
1097transfer_tail (pTHX)
1098{
1099 free_coro_mortal (aTHX);
1100}
1101
1036/* 1102/*
1037 * this is a _very_ stripped down perl interpreter ;) 1103 * this is a _very_ stripped down perl interpreter ;)
1038 */ 1104 */
1039static void 1105static void
1040cctx_run (void *arg) 1106cctx_run (void *arg)
1041{ 1107{
1108#ifdef USE_ITHREADS
1109# if CORO_PTHREAD
1110 PERL_SET_CONTEXT (coro_thx);
1111# endif
1112#endif
1113 {
1042 dTHX; 1114 dTHX;
1043 1115
1044 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1116 /* normally we would need to skip the entersub here */
1045 UNLOCK; 1117 /* not doing so will re-execute it, which is exactly what we want */
1046
1047 /* we now skip the entersub that lead to transfer() */
1048 PL_op = PL_op->op_next; 1118 /* PL_nop = PL_nop->op_next */
1049 1119
1050 /* inject a fake subroutine call to cctx_init */ 1120 /* inject a fake subroutine call to cctx_init */
1051 cctx_prepare (aTHX_ (coro_cctx *)arg); 1121 cctx_prepare (aTHX_ (coro_cctx *)arg);
1052 1122
1123 /* cctx_run is the alternative tail of transfer() */
1124 transfer_tail (aTHX);
1125
1053 /* somebody or something will hit me for both perl_run and PL_restartop */ 1126 /* somebody or something will hit me for both perl_run and PL_restartop */
1054 PL_restartop = PL_op; 1127 PL_restartop = PL_op;
1055 perl_run (PL_curinterp); 1128 perl_run (PL_curinterp);
1056 1129
1057 /* 1130 /*
1058 * If perl-run returns we assume exit() was being called or the coro 1131 * If perl-run returns we assume exit() was being called or the coro
1059 * fell off the end, which seems to be the only valid (non-bug) 1132 * fell off the end, which seems to be the only valid (non-bug)
1060 * reason for perl_run to return. We try to exit by jumping to the 1133 * reason for perl_run to return. We try to exit by jumping to the
1061 * bootstrap-time "top" top_env, as we cannot restore the "main" 1134 * bootstrap-time "top" top_env, as we cannot restore the "main"
1062 * coroutine as Coro has no such concept 1135 * coroutine as Coro has no such concept
1063 */ 1136 */
1064 PL_top_env = main_top_env; 1137 PL_top_env = main_top_env;
1065 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1138 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1139 }
1066} 1140}
1067 1141
1068static coro_cctx * 1142static coro_cctx *
1069cctx_new () 1143cctx_new ()
1070{ 1144{
1071 coro_cctx *cctx; 1145 coro_cctx *cctx;
1146
1147 ++cctx_count;
1148 New (0, cctx, 1, coro_cctx);
1149
1150 cctx->gen = cctx_gen;
1151 cctx->flags = 0;
1152 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1153
1154 return cctx;
1155}
1156
1157/* create a new cctx only suitable as source */
1158static coro_cctx *
1159cctx_new_empty ()
1160{
1161 coro_cctx *cctx = cctx_new ();
1162
1163 cctx->sptr = 0;
1164 coro_create (&cctx->cctx, 0, 0, 0, 0);
1165
1166 return cctx;
1167}
1168
1169/* create a new cctx suitable as destination/running a perl interpreter */
1170static coro_cctx *
1171cctx_new_run ()
1172{
1173 coro_cctx *cctx = cctx_new ();
1072 void *stack_start; 1174 void *stack_start;
1073 size_t stack_size; 1175 size_t stack_size;
1074 1176
1075 ++cctx_count;
1076
1077 Newz (0, cctx, 1, coro_cctx);
1078
1079#if HAVE_MMAP 1177#if HAVE_MMAP
1080 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1178 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1081 /* mmap supposedly does allocate-on-write for us */ 1179 /* mmap supposedly does allocate-on-write for us */
1082 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1180 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1083 1181
1084 if (cctx->sptr != (void *)-1) 1182 if (cctx->sptr != (void *)-1)
1085 { 1183 {
1086# if CORO_STACKGUARD 1184 #if CORO_STACKGUARD
1087 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1185 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1088# endif 1186 #endif
1089 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1187 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1090 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1188 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1091 cctx->flags |= CC_MAPPED; 1189 cctx->flags |= CC_MAPPED;
1092 } 1190 }
1093 else 1191 else
1094#endif 1192#endif
1095 { 1193 {
1096 cctx->ssize = coro_stacksize * (long)sizeof (long); 1194 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1097 New (0, cctx->sptr, coro_stacksize, long); 1195 New (0, cctx->sptr, cctx_stacksize, long);
1098 1196
1099 if (!cctx->sptr) 1197 if (!cctx->sptr)
1100 { 1198 {
1101 perror ("FATAL: unable to allocate stack for coroutine"); 1199 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1102 _exit (EXIT_FAILURE); 1200 _exit (EXIT_FAILURE);
1103 } 1201 }
1104 1202
1105 stack_start = cctx->sptr; 1203 stack_start = cctx->sptr;
1106 stack_size = cctx->ssize; 1204 stack_size = cctx->ssize;
1107 } 1205 }
1108 1206
1109 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1207 #if CORO_USE_VALGRIND
1208 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1209 #endif
1210
1110 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1211 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1111 1212
1112 return cctx; 1213 return cctx;
1113} 1214}
1114 1215
… …
1117{ 1218{
1118 if (!cctx) 1219 if (!cctx)
1119 return; 1220 return;
1120 1221
1121 --cctx_count; 1222 --cctx_count;
1223 coro_destroy (&cctx->cctx);
1122 1224
1225 /* coro_transfer creates new, empty cctx's */
1226 if (cctx->sptr)
1227 {
1123#if CORO_USE_VALGRIND 1228 #if CORO_USE_VALGRIND
1124 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1229 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1125#endif 1230 #endif
1126 1231
1127#if HAVE_MMAP 1232#if HAVE_MMAP
1128 if (cctx->flags & CC_MAPPED) 1233 if (cctx->flags & CC_MAPPED)
1129 munmap (cctx->sptr, cctx->ssize); 1234 munmap (cctx->sptr, cctx->ssize);
1130 else 1235 else
1131#endif 1236#endif
1132 Safefree (cctx->sptr); 1237 Safefree (cctx->sptr);
1238 }
1133 1239
1134 Safefree (cctx); 1240 Safefree (cctx);
1135} 1241}
1136 1242
1137/* wether this cctx should be destructed */ 1243/* wether this cctx should be destructed */
1138#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1244#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1139 1245
1140static coro_cctx * 1246static coro_cctx *
1141cctx_get (pTHX) 1247cctx_get (pTHX)
1142{ 1248{
1143 while (expect_true (cctx_first)) 1249 while (expect_true (cctx_first))
… …
1150 return cctx; 1256 return cctx;
1151 1257
1152 cctx_destroy (cctx); 1258 cctx_destroy (cctx);
1153 } 1259 }
1154 1260
1155 return cctx_new (); 1261 return cctx_new_run ();
1156} 1262}
1157 1263
1158static void 1264static void
1159cctx_put (coro_cctx *cctx) 1265cctx_put (coro_cctx *cctx)
1160{ 1266{
1267 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1268
1161 /* free another cctx if overlimit */ 1269 /* free another cctx if overlimit */
1162 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1270 if (expect_false (cctx_idle >= cctx_max_idle))
1163 { 1271 {
1164 coro_cctx *first = cctx_first; 1272 coro_cctx *first = cctx_first;
1165 cctx_first = first->next; 1273 cctx_first = first->next;
1166 --cctx_idle; 1274 --cctx_idle;
1167 1275
… …
1176/** coroutine switching *****************************************************/ 1284/** coroutine switching *****************************************************/
1177 1285
1178static void 1286static void
1179transfer_check (pTHX_ struct coro *prev, struct coro *next) 1287transfer_check (pTHX_ struct coro *prev, struct coro *next)
1180{ 1288{
1289 /* TODO: throwing up here is considered harmful */
1290
1181 if (expect_true (prev != next)) 1291 if (expect_true (prev != next))
1182 { 1292 {
1183 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1293 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1184 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1294 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1185 1295
1186 if (expect_false (next->flags & CF_RUNNING)) 1296 if (expect_false (next->flags & CF_RUNNING))
1187 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1297 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1188 1298
1189 if (expect_false (next->flags & CF_DESTROYED)) 1299 if (expect_false (next->flags & CF_DESTROYED))
1190 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1300 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1191 1301
1192#if !PERL_VERSION_ATLEAST (5,10,0) 1302#if !PERL_VERSION_ATLEAST (5,10,0)
1193 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1303 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1194 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1304 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1195#endif 1305#endif
1196 } 1306 }
1197} 1307}
1198 1308
1199/* always use the TRANSFER macro */ 1309/* always use the TRANSFER macro */
1200static void NOINLINE 1310static void NOINLINE /* noinline so we have a fixed stackframe */
1201transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1311transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1202{ 1312{
1203 dSTACKLEVEL; 1313 dSTACKLEVEL;
1204 static volatile int has_throw;
1205 1314
1206 /* sometimes transfer is only called to set idle_sp */ 1315 /* sometimes transfer is only called to set idle_sp */
1207 if (expect_false (!next)) 1316 if (expect_false (!next))
1208 { 1317 {
1209 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1318 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1210 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1319 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1211 } 1320 }
1212 else if (expect_true (prev != next)) 1321 else if (expect_true (prev != next))
1213 { 1322 {
1214 coro_cctx *prev__cctx; 1323 coro_cctx *prev__cctx;
1215 1324
1216 if (expect_false (prev->flags & CF_NEW)) 1325 if (expect_false (prev->flags & CF_NEW))
1217 { 1326 {
1218 /* create a new empty context */ 1327 /* create a new empty/source context */
1219 Newz (0, prev->cctx, 1, coro_cctx); 1328 prev->cctx = cctx_new_empty ();
1220 prev->flags &= ~CF_NEW; 1329 prev->flags &= ~CF_NEW;
1221 prev->flags |= CF_RUNNING; 1330 prev->flags |= CF_RUNNING;
1222 } 1331 }
1223 1332
1224 prev->flags &= ~CF_RUNNING; 1333 prev->flags &= ~CF_RUNNING;
1225 next->flags |= CF_RUNNING; 1334 next->flags |= CF_RUNNING;
1226
1227 LOCK;
1228 1335
1229 /* first get rid of the old state */ 1336 /* first get rid of the old state */
1230 save_perl (aTHX_ prev); 1337 save_perl (aTHX_ prev);
1231 1338
1232 if (expect_false (next->flags & CF_NEW)) 1339 if (expect_false (next->flags & CF_NEW))
… …
1239 else 1346 else
1240 load_perl (aTHX_ next); 1347 load_perl (aTHX_ next);
1241 1348
1242 prev__cctx = prev->cctx; 1349 prev__cctx = prev->cctx;
1243 1350
1244 /* possibly "free" the cctx */ 1351 /* possibly untie and reuse the cctx */
1245 if (expect_true ( 1352 if (expect_true (
1246 prev__cctx->idle_sp == STACKLEVEL 1353 prev__cctx->idle_sp == (void *)stacklevel
1247 && !(prev__cctx->flags & CC_TRACE) 1354 && !(prev__cctx->flags & CC_TRACE)
1248 && !force_cctx 1355 && !force_cctx
1249 )) 1356 ))
1250 { 1357 {
1251 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1358 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1252 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1359 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1253 1360
1254 prev->cctx = 0; 1361 prev->cctx = 0;
1255 1362
1256 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1363 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1257 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1364 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1264 1371
1265 ++next->usecount; 1372 ++next->usecount;
1266 1373
1267 if (expect_true (!next->cctx)) 1374 if (expect_true (!next->cctx))
1268 next->cctx = cctx_get (aTHX); 1375 next->cctx = cctx_get (aTHX);
1269
1270 has_throw = !!next->throw;
1271 1376
1272 if (expect_false (prev__cctx != next->cctx)) 1377 if (expect_false (prev__cctx != next->cctx))
1273 { 1378 {
1274 prev__cctx->top_env = PL_top_env; 1379 prev__cctx->top_env = PL_top_env;
1275 PL_top_env = next->cctx->top_env; 1380 PL_top_env = next->cctx->top_env;
1276 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1381 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1277 } 1382 }
1278 1383
1279 free_coro_mortal (aTHX); 1384 transfer_tail (aTHX);
1280 UNLOCK;
1281
1282 if (expect_false (has_throw))
1283 {
1284 struct coro *coro = SvSTATE (coro_current);
1285
1286 if (coro->throw)
1287 {
1288 SV *exception = coro->throw;
1289 coro->throw = 0;
1290 sv_setsv (ERRSV, exception);
1291 croak (0);
1292 }
1293 }
1294 } 1385 }
1295} 1386}
1296
1297struct transfer_args
1298{
1299 struct coro *prev, *next;
1300};
1301 1387
1302#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1388#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1303#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1389#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1304 1390
1305/** high level stuff ********************************************************/ 1391/** high level stuff ********************************************************/
… …
1307static int 1393static int
1308coro_state_destroy (pTHX_ struct coro *coro) 1394coro_state_destroy (pTHX_ struct coro *coro)
1309{ 1395{
1310 if (coro->flags & CF_DESTROYED) 1396 if (coro->flags & CF_DESTROYED)
1311 return 0; 1397 return 0;
1398
1399 if (coro->on_destroy)
1400 coro->on_destroy (aTHX_ coro);
1312 1401
1313 coro->flags |= CF_DESTROYED; 1402 coro->flags |= CF_DESTROYED;
1314 1403
1315 if (coro->flags & CF_READY) 1404 if (coro->flags & CF_READY)
1316 { 1405 {
1317 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1406 /* reduce nready, as destroying a ready coro effectively unreadies it */
1318 /* alternative: look through all ready queues and remove the coro */ 1407 /* alternative: look through all ready queues and remove the coro */
1319 LOCK;
1320 --coro_nready; 1408 --coro_nready;
1321 UNLOCK;
1322 } 1409 }
1323 else 1410 else
1324 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1411 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1325 1412
1326 if (coro->mainstack && coro->mainstack != main_mainstack) 1413 if (coro->mainstack && coro->mainstack != main_mainstack)
1327 { 1414 {
1328 struct coro temp; 1415 struct coro temp;
1329 1416
1330 if (coro->flags & CF_RUNNING) 1417 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1331 croak ("FATAL: tried to destroy currently running coroutine");
1332 1418
1333 save_perl (aTHX_ &temp); 1419 save_perl (aTHX_ &temp);
1334 load_perl (aTHX_ coro); 1420 load_perl (aTHX_ coro);
1335 1421
1336 coro_destroy (aTHX_ coro); 1422 coro_destruct (aTHX_ coro);
1337 1423
1338 load_perl (aTHX_ &temp); 1424 load_perl (aTHX_ &temp);
1339 1425
1340 coro->slot = 0; 1426 coro->slot = 0;
1341 } 1427 }
… …
1387# define MGf_DUP 0 1473# define MGf_DUP 0
1388#endif 1474#endif
1389}; 1475};
1390 1476
1391static void 1477static void
1392prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1478prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1393{ 1479{
1394 ta->prev = SvSTATE (prev_sv); 1480 ta->prev = SvSTATE (prev_sv);
1395 ta->next = SvSTATE (next_sv); 1481 ta->next = SvSTATE (next_sv);
1396 TRANSFER_CHECK (*ta); 1482 TRANSFER_CHECK (*ta);
1397} 1483}
1398 1484
1399static void 1485static void
1400api_transfer (SV *prev_sv, SV *next_sv) 1486api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1401{ 1487{
1402 dTHX;
1403 struct transfer_args ta; 1488 struct coro_transfer_args ta;
1404 1489
1405 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1490 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1406 TRANSFER (ta, 1); 1491 TRANSFER (ta, 1);
1407} 1492}
1408 1493
1409/** Coro ********************************************************************/ 1494/** Coro ********************************************************************/
1410 1495
1411static void 1496INLINE void
1412coro_enq (pTHX_ SV *coro_sv) 1497coro_enq (pTHX_ struct coro *coro)
1413{ 1498{
1414 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1499 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1415} 1500}
1416 1501
1417static SV * 1502INLINE SV *
1418coro_deq (pTHX) 1503coro_deq (pTHX)
1419{ 1504{
1420 int prio; 1505 int prio;
1421 1506
1422 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1507 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1425 1510
1426 return 0; 1511 return 0;
1427} 1512}
1428 1513
1429static int 1514static int
1430api_ready (SV *coro_sv) 1515api_ready (pTHX_ SV *coro_sv)
1431{ 1516{
1432 dTHX;
1433 struct coro *coro; 1517 struct coro *coro;
1434 SV *sv_hook; 1518 SV *sv_hook;
1435 void (*xs_hook)(void); 1519 void (*xs_hook)(void);
1436 1520
1437 if (SvROK (coro_sv)) 1521 if (SvROK (coro_sv))
… …
1442 if (coro->flags & CF_READY) 1526 if (coro->flags & CF_READY)
1443 return 0; 1527 return 0;
1444 1528
1445 coro->flags |= CF_READY; 1529 coro->flags |= CF_READY;
1446 1530
1447 LOCK;
1448
1449 sv_hook = coro_nready ? 0 : coro_readyhook; 1531 sv_hook = coro_nready ? 0 : coro_readyhook;
1450 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1532 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1451 1533
1452 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1534 coro_enq (aTHX_ coro);
1453 ++coro_nready; 1535 ++coro_nready;
1454 1536
1455 UNLOCK;
1456
1457 if (sv_hook) 1537 if (sv_hook)
1458 { 1538 {
1459 dSP; 1539 dSP;
1460 1540
1461 ENTER; 1541 ENTER;
… …
1475 1555
1476 return 1; 1556 return 1;
1477} 1557}
1478 1558
1479static int 1559static int
1480api_is_ready (SV *coro_sv) 1560api_is_ready (pTHX_ SV *coro_sv)
1481{ 1561{
1482 dTHX;
1483 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1562 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1484} 1563}
1485 1564
1486static void 1565INLINE void
1487prepare_schedule (pTHX_ struct transfer_args *ta) 1566prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1488{ 1567{
1489 SV *prev_sv, *next_sv; 1568 SV *prev_sv, *next_sv;
1490 1569
1491 for (;;) 1570 for (;;)
1492 { 1571 {
1493 LOCK;
1494 next_sv = coro_deq (aTHX); 1572 next_sv = coro_deq (aTHX);
1495 1573
1496 /* nothing to schedule: call the idle handler */ 1574 /* nothing to schedule: call the idle handler */
1497 if (expect_false (!next_sv)) 1575 if (expect_false (!next_sv))
1498 { 1576 {
1499 dSP; 1577 dSP;
1500 UNLOCK;
1501 1578
1502 ENTER; 1579 ENTER;
1503 SAVETMPS; 1580 SAVETMPS;
1504 1581
1505 PUSHMARK (SP); 1582 PUSHMARK (SP);
… …
1510 FREETMPS; 1587 FREETMPS;
1511 LEAVE; 1588 LEAVE;
1512 continue; 1589 continue;
1513 } 1590 }
1514 1591
1515 ta->next = SvSTATE (next_sv); 1592 ta->next = SvSTATE_hv (next_sv);
1516 1593
1517 /* cannot transfer to destroyed coros, skip and look for next */ 1594 /* cannot transfer to destroyed coros, skip and look for next */
1518 if (expect_false (ta->next->flags & CF_DESTROYED)) 1595 if (expect_false (ta->next->flags & CF_DESTROYED))
1519 { 1596 {
1520 UNLOCK;
1521 SvREFCNT_dec (next_sv); 1597 SvREFCNT_dec (next_sv);
1522 /* coro_nready is already taken care of by destroy */ 1598 /* coro_nready has already been taken care of by destroy */
1523 continue; 1599 continue;
1524 } 1600 }
1525 1601
1526 --coro_nready; 1602 --coro_nready;
1527 UNLOCK;
1528 break; 1603 break;
1529 } 1604 }
1530 1605
1531 /* free this only after the transfer */ 1606 /* free this only after the transfer */
1532 prev_sv = SvRV (coro_current); 1607 prev_sv = SvRV (coro_current);
1533 ta->prev = SvSTATE (prev_sv); 1608 ta->prev = SvSTATE_hv (prev_sv);
1534 TRANSFER_CHECK (*ta); 1609 TRANSFER_CHECK (*ta);
1535 assert (ta->next->flags & CF_READY); 1610 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1536 ta->next->flags &= ~CF_READY; 1611 ta->next->flags &= ~CF_READY;
1537 SvRV_set (coro_current, next_sv); 1612 SvRV_set (coro_current, next_sv);
1538 1613
1539 LOCK;
1540 free_coro_mortal (aTHX); 1614 free_coro_mortal (aTHX);
1541 coro_mortal = prev_sv; 1615 coro_mortal = prev_sv;
1542 UNLOCK;
1543} 1616}
1544 1617
1545static void 1618INLINE void
1546prepare_cede (pTHX_ struct transfer_args *ta) 1619prepare_cede (pTHX_ struct coro_transfer_args *ta)
1547{ 1620{
1548 api_ready (coro_current); 1621 api_ready (aTHX_ coro_current);
1549 prepare_schedule (aTHX_ ta); 1622 prepare_schedule (aTHX_ ta);
1550} 1623}
1551 1624
1625INLINE void
1626prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1627{
1628 SV *prev = SvRV (coro_current);
1629
1630 if (coro_nready)
1631 {
1632 prepare_schedule (aTHX_ ta);
1633 api_ready (aTHX_ prev);
1634 }
1635 else
1636 prepare_nop (aTHX_ ta);
1637}
1638
1639static void
1640api_schedule (pTHX)
1641{
1642 struct coro_transfer_args ta;
1643
1644 prepare_schedule (aTHX_ &ta);
1645 TRANSFER (ta, 1);
1646}
1647
1552static int 1648static int
1553prepare_cede_notself (pTHX_ struct transfer_args *ta) 1649api_cede (pTHX)
1554{ 1650{
1555 if (coro_nready) 1651 struct coro_transfer_args ta;
1556 { 1652
1557 SV *prev = SvRV (coro_current);
1558 prepare_schedule (aTHX_ ta); 1653 prepare_cede (aTHX_ &ta);
1559 api_ready (prev); 1654
1655 if (expect_true (ta.prev != ta.next))
1656 {
1657 TRANSFER (ta, 1);
1560 return 1; 1658 return 1;
1561 } 1659 }
1562 else 1660 else
1563 return 0; 1661 return 0;
1564} 1662}
1565 1663
1566static void
1567api_schedule (void)
1568{
1569 dTHX;
1570 struct transfer_args ta;
1571
1572 prepare_schedule (aTHX_ &ta);
1573 TRANSFER (ta, 1);
1574}
1575
1576static int 1664static int
1577api_cede (void) 1665api_cede_notself (pTHX)
1578{ 1666{
1579 dTHX; 1667 if (coro_nready)
1668 {
1580 struct transfer_args ta; 1669 struct coro_transfer_args ta;
1581 1670
1582 prepare_cede (aTHX_ &ta); 1671 prepare_cede_notself (aTHX_ &ta);
1583
1584 if (expect_true (ta.prev != ta.next))
1585 {
1586 TRANSFER (ta, 1); 1672 TRANSFER (ta, 1);
1587 return 1; 1673 return 1;
1588 } 1674 }
1589 else 1675 else
1590 return 0; 1676 return 0;
1591} 1677}
1592 1678
1593static int 1679static void
1594api_cede_notself (void)
1595{
1596 dTHX;
1597 struct transfer_args ta;
1598
1599 if (prepare_cede_notself (aTHX_ &ta))
1600 {
1601 TRANSFER (ta, 1);
1602 return 1;
1603 }
1604 else
1605 return 0;
1606}
1607
1608static void
1609api_trace (SV *coro_sv, int flags) 1680api_trace (pTHX_ SV *coro_sv, int flags)
1610{ 1681{
1611 dTHX;
1612 struct coro *coro = SvSTATE (coro_sv); 1682 struct coro *coro = SvSTATE (coro_sv);
1613 1683
1614 if (flags & CC_TRACE) 1684 if (flags & CC_TRACE)
1615 { 1685 {
1616 if (!coro->cctx) 1686 if (!coro->cctx)
1617 coro->cctx = cctx_new (); 1687 coro->cctx = cctx_new_run ();
1618 else if (!(coro->cctx->flags & CC_TRACE)) 1688 else if (!(coro->cctx->flags & CC_TRACE))
1619 croak ("cannot enable tracing on coroutine with custom stack"); 1689 croak ("cannot enable tracing on coroutine with custom stack,");
1620 1690
1621 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1691 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1622 } 1692 }
1623 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1693 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1624 { 1694 {
… …
1629 else 1699 else
1630 coro->slot->runops = RUNOPS_DEFAULT; 1700 coro->slot->runops = RUNOPS_DEFAULT;
1631 } 1701 }
1632} 1702}
1633 1703
1704/*****************************************************************************/
1705/* PerlIO::cede */
1706
1707typedef struct
1708{
1709 PerlIOBuf base;
1710 NV next, every;
1711} PerlIOCede;
1712
1713static IV
1714PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1715{
1716 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1717
1718 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1719 self->next = nvtime () + self->every;
1720
1721 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1722}
1723
1724static SV *
1725PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1726{
1727 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1728
1729 return newSVnv (self->every);
1730}
1731
1732static IV
1733PerlIOCede_flush (pTHX_ PerlIO *f)
1734{
1735 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1736 double now = nvtime ();
1737
1738 if (now >= self->next)
1739 {
1740 api_cede (aTHX);
1741 self->next = now + self->every;
1742 }
1743
1744 return PerlIOBuf_flush (aTHX_ f);
1745}
1746
1747static PerlIO_funcs PerlIO_cede =
1748{
1749 sizeof(PerlIO_funcs),
1750 "cede",
1751 sizeof(PerlIOCede),
1752 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1753 PerlIOCede_pushed,
1754 PerlIOBuf_popped,
1755 PerlIOBuf_open,
1756 PerlIOBase_binmode,
1757 PerlIOCede_getarg,
1758 PerlIOBase_fileno,
1759 PerlIOBuf_dup,
1760 PerlIOBuf_read,
1761 PerlIOBuf_unread,
1762 PerlIOBuf_write,
1763 PerlIOBuf_seek,
1764 PerlIOBuf_tell,
1765 PerlIOBuf_close,
1766 PerlIOCede_flush,
1767 PerlIOBuf_fill,
1768 PerlIOBase_eof,
1769 PerlIOBase_error,
1770 PerlIOBase_clearerr,
1771 PerlIOBase_setlinebuf,
1772 PerlIOBuf_get_base,
1773 PerlIOBuf_bufsiz,
1774 PerlIOBuf_get_ptr,
1775 PerlIOBuf_get_cnt,
1776 PerlIOBuf_set_ptrcnt,
1777};
1778
1779/*****************************************************************************/
1780
1781static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1782static const CV *slf_cv;
1783static SV **slf_argv;
1784static int slf_argc, slf_arga; /* count, allocated */
1785static I32 slf_ax; /* top of stack, for restore */
1786
1787/* this restores the stack in the case we patched the entersub, to */
1788/* recreate the stack frame as perl will on following calls */
1789/* since entersub cleared the stack */
1790static OP *
1791pp_restore (pTHX)
1792{
1793 int i;
1794 SV **SP = PL_stack_base + slf_ax;
1795
1796 PUSHMARK (SP);
1797
1798 EXTEND (SP, slf_argc + 1);
1799
1800 for (i = 0; i < slf_argc; ++i)
1801 PUSHs (sv_2mortal (slf_argv [i]));
1802
1803 PUSHs ((SV *)CvGV (slf_cv));
1804
1805 RETURNOP (slf_restore.op_first);
1806}
1807
1808static void
1809slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1810{
1811 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1812}
1813
1814static void
1815slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1816{
1817 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1818
1819 frame->prepare = slf_prepare_set_stacklevel;
1820 frame->check = slf_check_nop;
1821 frame->data = (void *)SvIV (arg [0]);
1822}
1823
1824static void
1825slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1826{
1827 SV **arg = (SV **)slf_frame.data;
1828
1829 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1928
1929 /* return value handling - mostly like entersub */
1930 {
1931 dSP;
1932 SV **bot = PL_stack_base + checkmark;
1933 int gimme = GIMME_V;
1934
1935 /* make sure we put something on the stack in scalar context */
1936 if (gimme == G_SCALAR)
1937 {
1938 if (sp == bot)
1939 XPUSHs (&PL_sv_undef);
1940
1941 SP = bot + 1;
1942 }
1943
1944 PUTBACK;
1945 }
1946
1947 /* exception handling */
1948 if (expect_false (coro_throw))
1949 {
1950 SV *exception = sv_2mortal (coro_throw);
1951
1952 coro_throw = 0;
1953 sv_setsv (ERRSV, exception);
1954 croak (0);
1955 }
1956
1957 return NORMAL;
1958}
1959
1960static void
1961api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1962{
1963 int i;
1964 SV **arg = PL_stack_base + ax;
1965 int items = PL_stack_sp - arg + 1;
1966
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 CvFLAGS (cv) |= CVf_SLF;
1974 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1975 slf_cv = cv;
1976
1977 /* we patch the op, and then re-run the whole call */
1978 /* we have to put the same argument on the stack for this to work */
1979 /* and this will be done by pp_restore */
1980 slf_restore.op_next = (OP *)&slf_restore;
1981 slf_restore.op_type = OP_CUSTOM;
1982 slf_restore.op_ppaddr = pp_restore;
1983 slf_restore.op_first = PL_op;
1984
1985 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1986
1987 if (items > slf_arga)
1988 {
1989 slf_arga = items;
1990 free (slf_argv);
1991 slf_argv = malloc (slf_arga * sizeof (SV *));
1992 }
1993
1994 slf_argc = items;
1995
1996 for (i = 0; i < items; ++i)
1997 slf_argv [i] = SvREFCNT_inc (arg [i]);
1998
1999 PL_op->op_ppaddr = pp_slf;
2000 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2001
2002 PL_op = (OP *)&slf_restore;
2003}
2004
2005/*****************************************************************************/
2006
2007static void
2008coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2009{
2010 SV *count_sv = AvARRAY (av)[0];
2011 IV count = SvIVX (count_sv);
2012
2013 count += adjust;
2014 SvIVX (count_sv) = count;
2015
2016 /* now wake up as many waiters as are expected to lock */
2017 while (count > 0 && AvFILLp (av) > 0)
2018 {
2019 SV *cb;
2020
2021 /* swap first two elements so we can shift a waiter */
2022 AvARRAY (av)[0] = AvARRAY (av)[1];
2023 AvARRAY (av)[1] = count_sv;
2024 cb = av_shift (av);
2025
2026 if (SvOBJECT (cb))
2027 api_ready (aTHX_ cb);
2028 else
2029 croak ("callbacks not yet supported");
2030
2031 SvREFCNT_dec (cb);
2032
2033 --count;
2034 }
2035}
2036
2037static void
2038coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2039{
2040 /* call $sem->adjust (0) to possibly wake up some other waiters */
2041 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2042}
2043
1634static int 2044static int
1635coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2045slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
1636{ 2046{
1637 AV *padlist; 2047 AV *av = (AV *)frame->data;
1638 AV *av = (AV *)mg->mg_obj; 2048 SV *count_sv = AvARRAY (av)[0];
1639 2049
1640 abort (); 2050 if (SvIVX (count_sv) > 0)
1641 2051 {
2052 SvSTATE_current->on_destroy = 0;
2053 SvIVX (count_sv) = SvIVX (count_sv) - 1;
1642 return 0; 2054 return 0;
1643} 2055 }
2056 else
2057 {
2058 int i;
2059 /* if we were woken up but can't down, we look through the whole */
2060 /* waiters list and only add us if we aren't in there already */
2061 /* this avoids some degenerate memory usage cases */
1644 2062
1645static MGVTBL coro_gensub_vtbl = { 2063 for (i = 1; i <= AvFILLp (av); ++i)
1646 0, 0, 0, 0, 2064 if (AvARRAY (av)[i] == SvRV (coro_current))
1647 coro_gensub_free 2065 return 1;
1648}; 2066
2067 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2068 return 1;
2069 }
2070}
2071
2072static void
2073slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2074{
2075 AV *av = (AV *)SvRV (arg [0]);
2076
2077 if (SvIVX (AvARRAY (av)[0]) > 0)
2078 {
2079 frame->data = (void *)av;
2080 frame->prepare = prepare_nop;
2081 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2082 }
2083 else
2084 {
2085 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2086
2087 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2088 frame->prepare = prepare_schedule;
2089
2090 /* to avoid race conditions when a woken-up coro gets terminated */
2091 /* we arrange for a temporary on_destroy that calls adjust (0) */
2092 assert (!SvSTATE_current->on_destroy);//D
2093 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2094 }
2095
2096 frame->check = slf_check_semaphore_down;
2097
2098}
2099
2100/*****************************************************************************/
2101
2102#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2103
2104/* create a closure from XS, returns a code reference */
2105/* the arg can be accessed via GENSUB_ARG from the callback */
2106/* the callback must use dXSARGS/XSRETURN */
2107static SV *
2108gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2109{
2110 CV *cv = (CV *)NEWSV (0, 0);
2111
2112 sv_upgrade ((SV *)cv, SVt_PVCV);
2113
2114 CvANON_on (cv);
2115 CvISXSUB_on (cv);
2116 CvXSUB (cv) = xsub;
2117 GENSUB_ARG = arg;
2118
2119 return newRV_noinc ((SV *)cv);
2120}
2121
2122/*****************************************************************************/
1649 2123
1650MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2124MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1651 2125
1652PROTOTYPES: DISABLE 2126PROTOTYPES: DISABLE
1653 2127
1654BOOT: 2128BOOT:
1655{ 2129{
1656#ifdef USE_ITHREADS 2130#ifdef USE_ITHREADS
1657 MUTEX_INIT (&coro_mutex); 2131# if CORO_PTHREAD
2132 coro_thx = PERL_GET_CONTEXT;
2133# endif
1658#endif 2134#endif
1659 BOOT_PAGESIZE; 2135 BOOT_PAGESIZE;
1660 2136
1661 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2137 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1662 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2138 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1680 main_top_env = PL_top_env; 2156 main_top_env = PL_top_env;
1681 2157
1682 while (main_top_env->je_prev) 2158 while (main_top_env->je_prev)
1683 main_top_env = main_top_env->je_prev; 2159 main_top_env = main_top_env->je_prev;
1684 2160
2161 {
2162 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2163
2164 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2165 hv_store_ent (PL_custom_op_names, slf,
2166 newSVpv ("coro_slf", 0), 0);
2167
2168 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2169 hv_store_ent (PL_custom_op_descs, slf,
2170 newSVpv ("coro schedule like function", 0), 0);
2171 }
2172
1685 coroapi.ver = CORO_API_VERSION; 2173 coroapi.ver = CORO_API_VERSION;
1686 coroapi.rev = CORO_API_REVISION; 2174 coroapi.rev = CORO_API_REVISION;
2175
1687 coroapi.transfer = api_transfer; 2176 coroapi.transfer = api_transfer;
2177
2178 coroapi.sv_state = SvSTATE_;
2179 coroapi.execute_slf = api_execute_slf;
2180 coroapi.prepare_nop = prepare_nop;
2181 coroapi.prepare_schedule = prepare_schedule;
2182 coroapi.prepare_cede = prepare_cede;
2183 coroapi.prepare_cede_notself = prepare_cede_notself;
2184
2185 {
2186 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2187
2188 if (!svp) croak ("Time::HiRes is required");
2189 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2190
2191 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2192 }
1688 2193
1689 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2194 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1690} 2195}
1691 2196
1692SV * 2197SV *
… …
1716 av_push (coro->args, newSVsv (ST (i))); 2221 av_push (coro->args, newSVsv (ST (i)));
1717} 2222}
1718 OUTPUT: 2223 OUTPUT:
1719 RETVAL 2224 RETVAL
1720 2225
1721# these not obviously related functions are all rolled into the same xs
1722# function to increase chances that they all will call transfer with the same
1723# stack offset
1724void 2226void
1725_set_stacklevel (...) 2227_set_stacklevel (...)
1726 ALIAS: 2228 CODE:
1727 Coro::State::transfer = 1 2229 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1728 Coro::schedule = 2
1729 Coro::cede = 3
1730 Coro::cede_notself = 4
1731 CODE:
1732{
1733 struct transfer_args ta;
1734 2230
1735 PUTBACK; 2231void
1736 switch (ix) 2232transfer (...)
1737 { 2233 PROTOTYPE: $$
1738 case 0: 2234 CODE:
1739 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2235 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1740 ta.next = 0;
1741 break;
1742
1743 case 1:
1744 if (items != 2)
1745 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1746
1747 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1748 break;
1749
1750 case 2:
1751 prepare_schedule (aTHX_ &ta);
1752 break;
1753
1754 case 3:
1755 prepare_cede (aTHX_ &ta);
1756 break;
1757
1758 case 4:
1759 if (!prepare_cede_notself (aTHX_ &ta))
1760 XSRETURN_EMPTY;
1761
1762 break;
1763 }
1764 SPAGAIN;
1765
1766 BARRIER;
1767 PUTBACK;
1768 TRANSFER (ta, 0);
1769 SPAGAIN; /* might be the sp of a different coroutine now */
1770 /* be extra careful not to ever do anything after TRANSFER */
1771}
1772 2236
1773bool 2237bool
1774_destroy (SV *coro_sv) 2238_destroy (SV *coro_sv)
1775 CODE: 2239 CODE:
1776 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2240 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1783 CODE: 2247 CODE:
1784 _exit (code); 2248 _exit (code);
1785 2249
1786int 2250int
1787cctx_stacksize (int new_stacksize = 0) 2251cctx_stacksize (int new_stacksize = 0)
2252 PROTOTYPE: ;$
1788 CODE: 2253 CODE:
1789 RETVAL = coro_stacksize; 2254 RETVAL = cctx_stacksize;
1790 if (new_stacksize) 2255 if (new_stacksize)
2256 {
1791 coro_stacksize = new_stacksize; 2257 cctx_stacksize = new_stacksize;
2258 ++cctx_gen;
2259 }
1792 OUTPUT: 2260 OUTPUT:
1793 RETVAL 2261 RETVAL
1794 2262
1795int 2263int
2264cctx_max_idle (int max_idle = 0)
2265 PROTOTYPE: ;$
2266 CODE:
2267 RETVAL = cctx_max_idle;
2268 if (max_idle > 1)
2269 cctx_max_idle = max_idle;
2270 OUTPUT:
2271 RETVAL
2272
2273int
1796cctx_count () 2274cctx_count ()
2275 PROTOTYPE:
1797 CODE: 2276 CODE:
1798 RETVAL = cctx_count; 2277 RETVAL = cctx_count;
1799 OUTPUT: 2278 OUTPUT:
1800 RETVAL 2279 RETVAL
1801 2280
1802int 2281int
1803cctx_idle () 2282cctx_idle ()
2283 PROTOTYPE:
1804 CODE: 2284 CODE:
1805 RETVAL = cctx_idle; 2285 RETVAL = cctx_idle;
1806 OUTPUT: 2286 OUTPUT:
1807 RETVAL 2287 RETVAL
1808 2288
1809void 2289void
1810list () 2290list ()
2291 PROTOTYPE:
1811 PPCODE: 2292 PPCODE:
1812{ 2293{
1813 struct coro *coro; 2294 struct coro *coro;
1814 for (coro = coro_first; coro; coro = coro->next) 2295 for (coro = coro_first; coro; coro = coro->next)
1815 if (coro->hv) 2296 if (coro->hv)
… …
1874 RETVAL = boolSV (coro->flags & ix); 2355 RETVAL = boolSV (coro->flags & ix);
1875 OUTPUT: 2356 OUTPUT:
1876 RETVAL 2357 RETVAL
1877 2358
1878void 2359void
2360throw (Coro::State self, SV *throw = &PL_sv_undef)
2361 PROTOTYPE: $;$
2362 CODE:
2363{
2364 struct coro *current = SvSTATE_current;
2365 SV **throwp = self == current ? &coro_throw : &self->throw;
2366 SvREFCNT_dec (*throwp);
2367 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2368}
2369
2370void
1879api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2371api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2372 PROTOTYPE: $;$
2373 C_ARGS: aTHX_ coro, flags
1880 2374
1881SV * 2375SV *
1882has_cctx (Coro::State coro) 2376has_cctx (Coro::State coro)
1883 PROTOTYPE: $ 2377 PROTOTYPE: $
1884 CODE: 2378 CODE:
… …
1892 CODE: 2386 CODE:
1893 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2387 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1894 OUTPUT: 2388 OUTPUT:
1895 RETVAL 2389 RETVAL
1896 2390
1897IV 2391UV
1898rss (Coro::State coro) 2392rss (Coro::State coro)
1899 PROTOTYPE: $ 2393 PROTOTYPE: $
1900 ALIAS: 2394 ALIAS:
1901 usecount = 1 2395 usecount = 1
1902 CODE: 2396 CODE:
… …
1908 OUTPUT: 2402 OUTPUT:
1909 RETVAL 2403 RETVAL
1910 2404
1911void 2405void
1912force_cctx () 2406force_cctx ()
2407 PROTOTYPE:
1913 CODE: 2408 CODE:
1914 struct coro *coro = SvSTATE (coro_current);
1915 coro->cctx->idle_sp = 0; 2409 SvSTATE_current->cctx->idle_sp = 0;
1916
1917void
1918throw (Coro::State self, SV *throw = &PL_sv_undef)
1919 PROTOTYPE: $;$
1920 CODE:
1921 SvREFCNT_dec (self->throw);
1922 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1923 2410
1924void 2411void
1925swap_defsv (Coro::State self) 2412swap_defsv (Coro::State self)
1926 PROTOTYPE: $ 2413 PROTOTYPE: $
1927 ALIAS: 2414 ALIAS:
1928 swap_defav = 1 2415 swap_defav = 1
1929 CODE: 2416 CODE:
1930 if (!self->slot) 2417 if (!self->slot)
1931 croak ("cannot swap state with coroutine that has no saved state"); 2418 croak ("cannot swap state with coroutine that has no saved state,");
1932 else 2419 else
1933 { 2420 {
1934 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2421 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1935 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2422 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1936 2423
… …
1961 2448
1962 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2449 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1963 coro_ready[i] = newAV (); 2450 coro_ready[i] = newAV ();
1964 2451
1965 { 2452 {
1966 SV *sv = perl_get_sv ("Coro::API", TRUE); 2453 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1967 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1968 2454
1969 coroapi.schedule = api_schedule; 2455 coroapi.schedule = api_schedule;
1970 coroapi.cede = api_cede; 2456 coroapi.cede = api_cede;
1971 coroapi.cede_notself = api_cede_notself; 2457 coroapi.cede_notself = api_cede_notself;
1972 coroapi.ready = api_ready; 2458 coroapi.ready = api_ready;
1973 coroapi.is_ready = api_is_ready; 2459 coroapi.is_ready = api_is_ready;
1974 coroapi.nready = &coro_nready; 2460 coroapi.nready = coro_nready;
1975 coroapi.current = coro_current; 2461 coroapi.current = coro_current;
1976 2462
1977 GCoroAPI = &coroapi; 2463 GCoroAPI = &coroapi;
1978 sv_setiv (sv, (IV)&coroapi); 2464 sv_setiv (sv, (IV)&coroapi);
1979 SvREADONLY_on (sv); 2465 SvREADONLY_on (sv);
1980 } 2466 }
1981} 2467}
2468
2469void
2470schedule (...)
2471 CODE:
2472 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2473
2474void
2475cede (...)
2476 CODE:
2477 CORO_EXECUTE_SLF_XS (slf_init_cede);
2478
2479void
2480cede_notself (...)
2481 CODE:
2482 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1982 2483
1983void 2484void
1984_set_current (SV *current) 2485_set_current (SV *current)
1985 PROTOTYPE: $ 2486 PROTOTYPE: $
1986 CODE: 2487 CODE:
1987 SvREFCNT_dec (SvRV (coro_current)); 2488 SvREFCNT_dec (SvRV (coro_current));
1988 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2489 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1989 2490
1990void 2491void
1991_set_readyhook (SV *hook) 2492_set_readyhook (SV *hook)
1992 PROTOTYPE: $ 2493 PROTOTYPE: $
1993 CODE: 2494 CODE:
1994 LOCK;
1995 SvREFCNT_dec (coro_readyhook); 2495 SvREFCNT_dec (coro_readyhook);
1996 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2496 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1997 UNLOCK;
1998 2497
1999int 2498int
2000prio (Coro::State coro, int newprio = 0) 2499prio (Coro::State coro, int newprio = 0)
2500 PROTOTYPE: $;$
2001 ALIAS: 2501 ALIAS:
2002 nice = 1 2502 nice = 1
2003 CODE: 2503 CODE:
2004{ 2504{
2005 RETVAL = coro->prio; 2505 RETVAL = coro->prio;
… …
2020 2520
2021SV * 2521SV *
2022ready (SV *self) 2522ready (SV *self)
2023 PROTOTYPE: $ 2523 PROTOTYPE: $
2024 CODE: 2524 CODE:
2025 RETVAL = boolSV (api_ready (self)); 2525 RETVAL = boolSV (api_ready (aTHX_ self));
2026 OUTPUT: 2526 OUTPUT:
2027 RETVAL 2527 RETVAL
2028 2528
2029int 2529int
2030nready (...) 2530nready (...)
… …
2037# for async_pool speedup 2537# for async_pool speedup
2038void 2538void
2039_pool_1 (SV *cb) 2539_pool_1 (SV *cb)
2040 CODE: 2540 CODE:
2041{ 2541{
2042 struct coro *coro = SvSTATE (coro_current);
2043 HV *hv = (HV *)SvRV (coro_current); 2542 HV *hv = (HV *)SvRV (coro_current);
2543 struct coro *coro = SvSTATE_hv ((SV *)hv);
2044 AV *defav = GvAV (PL_defgv); 2544 AV *defav = GvAV (PL_defgv);
2045 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2545 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2046 AV *invoke_av; 2546 AV *invoke_av;
2047 int i, len; 2547 int i, len;
2048 2548
… …
2053 SvREFCNT_dec (old); 2553 SvREFCNT_dec (old);
2054 croak ("\3async_pool terminate\2\n"); 2554 croak ("\3async_pool terminate\2\n");
2055 } 2555 }
2056 2556
2057 SvREFCNT_dec (coro->saved_deffh); 2557 SvREFCNT_dec (coro->saved_deffh);
2058 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2558 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2059 2559
2060 hv_store (hv, "desc", sizeof ("desc") - 1, 2560 hv_store (hv, "desc", sizeof ("desc") - 1,
2061 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2561 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2062 2562
2063 invoke_av = (AV *)SvRV (invoke); 2563 invoke_av = (AV *)SvRV (invoke);
… …
2067 2567
2068 if (len > 0) 2568 if (len > 0)
2069 { 2569 {
2070 av_fill (defav, len - 1); 2570 av_fill (defav, len - 1);
2071 for (i = 0; i < len; ++i) 2571 for (i = 0; i < len; ++i)
2072 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2572 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2073 } 2573 }
2074
2075 SvREFCNT_dec (invoke);
2076} 2574}
2077 2575
2078void 2576void
2079_pool_2 (SV *cb) 2577_pool_2 (SV *cb)
2080 CODE: 2578 CODE:
2081{ 2579{
2082 struct coro *coro = SvSTATE (coro_current); 2580 HV *hv = (HV *)SvRV (coro_current);
2581 struct coro *coro = SvSTATE_hv ((SV *)hv);
2083 2582
2084 sv_setsv (cb, &PL_sv_undef); 2583 sv_setsv (cb, &PL_sv_undef);
2085 2584
2086 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2585 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2087 coro->saved_deffh = 0; 2586 coro->saved_deffh = 0;
2088 2587
2089 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2588 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2090 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2589 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2091 { 2590 {
2092 SV *old = PL_diehook; 2591 SV *old = PL_diehook;
2093 PL_diehook = 0; 2592 PL_diehook = 0;
2094 SvREFCNT_dec (old); 2593 SvREFCNT_dec (old);
2095 croak ("\3async_pool terminate\2\n"); 2594 croak ("\3async_pool terminate\2\n");
2096 } 2595 }
2097 2596
2098 av_clear (GvAV (PL_defgv)); 2597 av_clear (GvAV (PL_defgv));
2099 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2598 hv_store (hv, "desc", sizeof ("desc") - 1,
2100 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2599 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2101 2600
2102 coro->prio = 0; 2601 coro->prio = 0;
2103 2602
2104 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2603 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2105 api_trace (coro_current, 0); 2604 api_trace (aTHX_ coro_current, 0);
2106 2605
2107 av_push (av_async_pool, newSVsv (coro_current)); 2606 av_push (av_async_pool, newSVsv (coro_current));
2108} 2607}
2109 2608
2110#if 0 2609
2610MODULE = Coro::State PACKAGE = Coro::AIO
2111 2611
2112void 2612void
2113_generator_call (...) 2613_get_state (SV *self)
2114 PROTOTYPE: @ 2614 PROTOTYPE: $
2115 PPCODE: 2615 PPCODE:
2116 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2117 xxxx
2118 abort ();
2119
2120SV *
2121gensub (SV *sub, ...)
2122 PROTOTYPE: &;@
2123 CODE:
2124{ 2616{
2125 struct coro *coro; 2617 AV *defav = GvAV (PL_defgv);
2126 MAGIC *mg; 2618 AV *av = newAV ();
2127 CV *xcv;
2128 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2129 int i; 2619 int i;
2130
2131 CvGV (ncv) = CvGV (cv);
2132 CvFILE (ncv) = CvFILE (cv);
2133
2134 Newz (0, coro, 1, struct coro);
2135 coro->args = newAV ();
2136 coro->flags = CF_NEW;
2137
2138 av_extend (coro->args, items - 1);
2139 for (i = 1; i < items; i++)
2140 av_push (coro->args, newSVsv (ST (i)));
2141
2142 CvISXSUB_on (ncv);
2143 CvXSUBANY (ncv).any_ptr = (void *)coro;
2144
2145 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2146
2147 CvXSUB (ncv) = CvXSUB (xcv);
2148 CvANON_on (ncv);
2149
2150 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2151 RETVAL = newRV_noinc ((SV *)ncv);
2152}
2153 OUTPUT:
2154 RETVAL
2155
2156#endif
2157
2158
2159MODULE = Coro::State PACKAGE = Coro::AIO
2160
2161SV *
2162_get_state ()
2163 CODE:
2164{
2165 struct io_state *data;
2166
2167 RETVAL = newSV (sizeof (struct io_state)); 2620 SV *data_sv = newSV (sizeof (struct io_state));
2168 data = (struct io_state *)SvPVX (RETVAL); 2621 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2169 SvCUR_set (RETVAL, sizeof (struct io_state)); 2622 SvCUR_set (data_sv, sizeof (struct io_state));
2170 SvPOK_only (RETVAL); 2623 SvPOK_only (data_sv);
2171 2624
2172 data->errorno = errno; 2625 data->errorno = errno;
2173 data->laststype = PL_laststype; 2626 data->laststype = PL_laststype;
2174 data->laststatval = PL_laststatval; 2627 data->laststatval = PL_laststatval;
2175 data->statcache = PL_statcache; 2628 data->statcache = PL_statcache;
2629
2630 av_extend (av, AvFILLp (defav) + 1 + 1);
2631
2632 for (i = 0; i <= AvFILLp (defav); ++i)
2633 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2634
2635 av_push (av, data_sv);
2636
2637 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2638
2639 api_ready (aTHX_ self);
2176} 2640}
2177 OUTPUT:
2178 RETVAL
2179 2641
2180void 2642void
2181_set_state (char *data_) 2643_set_state (SV *state)
2182 PROTOTYPE: $ 2644 PROTOTYPE: $
2183 CODE: 2645 PPCODE:
2184{ 2646{
2185 struct io_state *data = (void *)data_; 2647 AV *av = (AV *)SvRV (state);
2648 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2649 int i;
2186 2650
2187 errno = data->errorno; 2651 errno = data->errorno;
2188 PL_laststype = data->laststype; 2652 PL_laststype = data->laststype;
2189 PL_laststatval = data->laststatval; 2653 PL_laststatval = data->laststatval;
2190 PL_statcache = data->statcache; 2654 PL_statcache = data->statcache;
2655
2656 EXTEND (SP, AvFILLp (av));
2657 for (i = 0; i < AvFILLp (av); ++i)
2658 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2191} 2659}
2192 2660
2193 2661
2194MODULE = Coro::State PACKAGE = Coro::AnyEvent 2662MODULE = Coro::State PACKAGE = Coro::AnyEvent
2195 2663
2196BOOT: 2664BOOT:
2197 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2665 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2198 2666
2199SV * 2667void
2200_schedule (...) 2668_schedule (...)
2201 PROTOTYPE: @
2202 CODE: 2669 CODE:
2203{ 2670{
2204 static int incede; 2671 static int incede;
2205 2672
2206 api_cede_notself (); 2673 api_cede_notself (aTHX);
2207 2674
2208 ++incede; 2675 ++incede;
2209 while (coro_nready >= incede && api_cede ()) 2676 while (coro_nready >= incede && api_cede (aTHX))
2210 ; 2677 ;
2211 2678
2212 sv_setsv (sv_activity, &PL_sv_undef); 2679 sv_setsv (sv_activity, &PL_sv_undef);
2213 if (coro_nready >= incede) 2680 if (coro_nready >= incede)
2214 { 2681 {
… …
2219 } 2686 }
2220 2687
2221 --incede; 2688 --incede;
2222} 2689}
2223 2690
2691
2692MODULE = Coro::State PACKAGE = PerlIO::cede
2693
2694BOOT:
2695 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2696
2697MODULE = Coro::State PACKAGE = Coro::Semaphore
2698
2699SV *
2700new (SV *klass, SV *count_ = 0)
2701 CODE:
2702{
2703 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2704 AV *av = newAV ();
2705 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2706 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2707}
2708 OUTPUT:
2709 RETVAL
2710
2711SV *
2712count (SV *self)
2713 CODE:
2714 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2715 OUTPUT:
2716 RETVAL
2717
2718void
2719up (SV *self, int adjust = 1)
2720 ALIAS:
2721 adjust = 1
2722 CODE:
2723 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2724
2725void
2726down (SV *self)
2727 CODE:
2728 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2729
2730void
2731try (SV *self)
2732 PPCODE:
2733{
2734 AV *av = (AV *)SvRV (self);
2735 SV *count_sv = AvARRAY (av)[0];
2736 IV count = SvIVX (count_sv);
2737
2738 if (count > 0)
2739 {
2740 --count;
2741 SvIVX (count_sv) = count;
2742 XSRETURN_YES;
2743 }
2744 else
2745 XSRETURN_NO;
2746}
2747
2748void
2749waiters (SV *self)
2750 CODE:
2751{
2752 AV *av = (AV *)SvRV (self);
2753
2754 if (GIMME_V == G_SCALAR)
2755 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2756 else
2757 {
2758 int i;
2759 EXTEND (SP, AvFILLp (av) + 1 - 1);
2760 for (i = 1; i <= AvFILLp (av); ++i)
2761 PUSHs (newSVsv (AvARRAY (av)[i]));
2762 }
2763}
2764

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