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Comparing Coro/Coro/State.xs (file contents):
Revision 1.249 by root, Tue Sep 30 17:12:35 2008 UTC vs.
Revision 1.296 by root, Tue Nov 18 10:39:52 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
93 100#ifndef CvISXSUB_on
94/* 5.11 */ 101# define CvISXSUB_on(cv) (void)cv
95#ifndef CxHASARGS
96# define CxHASARGS(cx) (cx)->blk_sub.hasargs
97#endif 102#endif
98 103
99/* 5.8.7 */ 104/* 5.8.7 */
100#ifndef SvRV_set 105#ifndef SvRV_set
101# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
… …
114# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
115#endif 120#endif
116 121
117/* 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
118 * portable way as possible. */ 123 * portable way as possible. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
119#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
120#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
121 131
122#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
123 133
124#if __GNUC__ >= 3 134#if __GNUC__ >= 3
125# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
126# define BARRIER __asm__ __volatile__ ("" : : : "memory")
127# define expect(expr,value) __builtin_expect ((expr),(value)) 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
128#else 138#else
129# define attribute(x) 139# define attribute(x)
130# define BARRIER
131# define expect(expr,value) (expr) 140# define expect(expr,value) (expr)
141# define INLINE static
132#endif 142#endif
133 143
134#define expect_false(expr) expect ((expr) != 0, 0) 144#define expect_false(expr) expect ((expr) != 0, 0)
135#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
136 146
137#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
138 148
139#include "CoroAPI.h" 149#include "CoroAPI.h"
140 150
141#ifdef USE_ITHREADS 151#ifdef USE_ITHREADS
142static perl_mutex coro_mutex; 152# if CORO_PTHREAD
143# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 153static void *coro_thx;
144# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
145#else
146# define LOCK (void)0
147# define UNLOCK (void)0
148#endif 154# endif
149 155#endif
150/* helper storage struct for Coro::AIO */
151struct io_state
152{
153 AV *res;
154 int errorno;
155 I32 laststype;
156 int laststatval;
157 Stat_t statcache;
158};
159 156
160static double (*nvtime)(); /* so why doesn't it take void? */ 157static double (*nvtime)(); /* so why doesn't it take void? */
161 158
159/* we hijack an hopefully unused CV flag for our purposes */
160#define CVf_SLF 0x4000
161static OP *pp_slf (pTHX);
162
163static U32 cctx_gen;
162static size_t coro_stacksize = CORO_STACKSIZE; 164static size_t cctx_stacksize = CORO_STACKSIZE;
163static struct CoroAPI coroapi; 165static struct CoroAPI coroapi;
164static AV *main_mainstack; /* used to differentiate between $main and others */ 166static AV *main_mainstack; /* used to differentiate between $main and others */
165static JMPENV *main_top_env; 167static JMPENV *main_top_env;
166static HV *coro_state_stash, *coro_stash; 168static HV *coro_state_stash, *coro_stash;
167static volatile SV *coro_mortal; /* will be freed after next transfer */ 169static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
168 170
169static GV *irsgv; /* $/ */ 171static GV *irsgv; /* $/ */
170static GV *stdoutgv; /* *STDOUT */ 172static GV *stdoutgv; /* *STDOUT */
171static SV *rv_diehook; 173static SV *rv_diehook;
172static SV *rv_warnhook; 174static SV *rv_warnhook;
… …
191 CC_TRACE_LINE = 0x10, /* trace each statement */ 193 CC_TRACE_LINE = 0x10, /* trace each statement */
192 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 194 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
193}; 195};
194 196
195/* this is a structure representing a c-level coroutine */ 197/* this is a structure representing a c-level coroutine */
196typedef struct coro_cctx { 198typedef struct coro_cctx
199{
197 struct coro_cctx *next; 200 struct coro_cctx *next;
198 201
199 /* the stack */ 202 /* the stack */
200 void *sptr; 203 void *sptr;
201 size_t ssize; 204 size_t ssize;
… …
204 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 207 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
205 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 208 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
206 JMPENV *top_env; 209 JMPENV *top_env;
207 coro_context cctx; 210 coro_context cctx;
208 211
212 U32 gen;
209#if CORO_USE_VALGRIND 213#if CORO_USE_VALGRIND
210 int valgrind_id; 214 int valgrind_id;
211#endif 215#endif
212 unsigned char flags; 216 unsigned char flags;
213} coro_cctx; 217} coro_cctx;
… …
218 CF_NEW = 0x0004, /* has never been switched to */ 222 CF_NEW = 0x0004, /* has never been switched to */
219 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 223 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
220}; 224};
221 225
222/* the structure where most of the perl state is stored, overlaid on the cxstack */ 226/* the structure where most of the perl state is stored, overlaid on the cxstack */
223typedef struct { 227typedef struct
228{
224 SV *defsv; 229 SV *defsv;
225 AV *defav; 230 AV *defav;
226 SV *errsv; 231 SV *errsv;
227 SV *irsgv; 232 SV *irsgv;
228#define VAR(name,type) type name; 233#define VAR(name,type) type name;
… …
232 237
233#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
234 239
235/* this is a structure representing a perl-level coroutine */ 240/* this is a structure representing a perl-level coroutine */
236struct coro { 241struct coro {
237 /* the c coroutine allocated to this perl coroutine, if any */ 242 /* the C coroutine allocated to this perl coroutine, if any */
238 coro_cctx *cctx; 243 coro_cctx *cctx;
239 244
240 /* process data */ 245 /* state data */
246 struct CoroSLF slf_frame; /* saved slf frame */
241 AV *mainstack; 247 AV *mainstack;
242 perl_slots *slot; /* basically the saved sp */ 248 perl_slots *slot; /* basically the saved sp */
243 249
244 AV *args; /* data associated with this coroutine (initial args) */ 250 AV *args; /* data associated with this coroutine (initial args) */
245 int refcnt; /* coroutines are refcounted, yes */ 251 int refcnt; /* coroutines are refcounted, yes */
246 int flags; /* CF_ flags */ 252 int flags; /* CF_ flags */
247 HV *hv; /* the perl hash associated with this coro, if any */ 253 HV *hv; /* the perl hash associated with this coro, if any */
254 void (*on_destroy)(pTHX_ struct coro *coro);
248 255
249 /* statistics */ 256 /* statistics */
250 int usecount; /* number of transfers to this coro */ 257 int usecount; /* number of transfers to this coro */
251 258
252 /* coro process data */ 259 /* coro process data */
… …
260 struct coro *next, *prev; 267 struct coro *next, *prev;
261}; 268};
262 269
263typedef struct coro *Coro__State; 270typedef struct coro *Coro__State;
264typedef struct coro *Coro__State_or_hashref; 271typedef struct coro *Coro__State_or_hashref;
272
273/* the following variables are effectively part of the perl context */
274/* and get copied between struct coro and these variables */
275/* the mainr easonw e don't support windows process emulation */
276static struct CoroSLF slf_frame; /* the current slf frame */
277static SV *coro_throw;
265 278
266/** Coro ********************************************************************/ 279/** Coro ********************************************************************/
267 280
268#define PRIO_MAX 3 281#define PRIO_MAX 3
269#define PRIO_HIGH 1 282#define PRIO_HIGH 1
… …
273#define PRIO_MIN -4 286#define PRIO_MIN -4
274 287
275/* for Coro.pm */ 288/* for Coro.pm */
276static SV *coro_current; 289static SV *coro_current;
277static SV *coro_readyhook; 290static SV *coro_readyhook;
278static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 291static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
279static int coro_nready;
280static struct coro *coro_first; 292static struct coro *coro_first;
293#define coro_nready coroapi.nready
281 294
282/** lowlevel stuff **********************************************************/ 295/** lowlevel stuff **********************************************************/
283 296
284static SV * 297static SV *
285coro_get_sv (pTHX_ const char *name, int create) 298coro_get_sv (pTHX_ const char *name, int create)
… …
370 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 383 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
371 384
372 return 0; 385 return 0;
373} 386}
374 387
375#define CORO_MAGIC_type_cv PERL_MAGIC_ext 388#define CORO_MAGIC_type_cv 26
376#define CORO_MAGIC_type_state PERL_MAGIC_ext 389#define CORO_MAGIC_type_state PERL_MAGIC_ext
377 390
378static MGVTBL coro_cv_vtbl = { 391static MGVTBL coro_cv_vtbl = {
379 0, 0, 0, 0, 392 0, 0, 0, 0,
380 coro_cv_free 393 coro_cv_free
381}; 394};
382 395
396#define CORO_MAGIC_NN(sv, type) \
397 (expect_true (SvMAGIC (sv)->mg_type == type) \
398 ? SvMAGIC (sv) \
399 : mg_find (sv, type))
400
383#define CORO_MAGIC(sv,type) \ 401#define CORO_MAGIC(sv, type) \
384 SvMAGIC (sv) \ 402 (expect_true (SvMAGIC (sv)) \
385 ? SvMAGIC (sv)->mg_type == type \ 403 ? CORO_MAGIC_NN (sv, type) \
386 ? SvMAGIC (sv) \
387 : mg_find (sv, type) \
388 : 0 404 : 0)
389 405
390#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 406#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
391#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 407#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
392 408
393static struct coro * 409INLINE struct coro *
394SvSTATE_ (pTHX_ SV *coro) 410SvSTATE_ (pTHX_ SV *coro)
395{ 411{
396 HV *stash; 412 HV *stash;
397 MAGIC *mg; 413 MAGIC *mg;
398 414
… …
413 mg = CORO_MAGIC_state (coro); 429 mg = CORO_MAGIC_state (coro);
414 return (struct coro *)mg->mg_ptr; 430 return (struct coro *)mg->mg_ptr;
415} 431}
416 432
417#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 433#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
434
435/* faster than SvSTATE, but expects a coroutine hv */
436#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
437#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
418 438
419/* the next two functions merely cache the padlists */ 439/* the next two functions merely cache the padlists */
420static void 440static void
421get_padlist (pTHX_ CV *cv) 441get_padlist (pTHX_ CV *cv)
422{ 442{
… …
489 CvPADLIST (cv) = (AV *)POPs; 509 CvPADLIST (cv) = (AV *)POPs;
490 } 510 }
491 511
492 PUTBACK; 512 PUTBACK;
493 } 513 }
514
515 slf_frame = c->slf_frame;
516 coro_throw = c->throw;
494} 517}
495 518
496static void 519static void
497save_perl (pTHX_ Coro__State c) 520save_perl (pTHX_ Coro__State c)
498{ 521{
522 c->throw = coro_throw;
523 c->slf_frame = slf_frame;
524
499 { 525 {
500 dSP; 526 dSP;
501 I32 cxix = cxstack_ix; 527 I32 cxix = cxstack_ix;
502 PERL_CONTEXT *ccstk = cxstack; 528 PERL_CONTEXT *ccstk = cxstack;
503 PERL_SI *top_si = PL_curstackinfo; 529 PERL_SI *top_si = PL_curstackinfo;
… …
570 #undef VAR 596 #undef VAR
571 } 597 }
572} 598}
573 599
574/* 600/*
575 * allocate various perl stacks. This is an exact copy 601 * allocate various perl stacks. This is almost an exact copy
576 * of perl.c:init_stacks, except that it uses less memory 602 * of perl.c:init_stacks, except that it uses less memory
577 * on the (sometimes correct) assumption that coroutines do 603 * on the (sometimes correct) assumption that coroutines do
578 * not usually need a lot of stackspace. 604 * not usually need a lot of stackspace.
579 */ 605 */
580#if CORO_PREFER_PERL_FUNCTIONS 606#if CORO_PREFER_PERL_FUNCTIONS
… …
623 649
624/* 650/*
625 * destroy the stacks, the callchain etc... 651 * destroy the stacks, the callchain etc...
626 */ 652 */
627static void 653static void
628coro_destroy_stacks (pTHX) 654coro_destruct_stacks (pTHX)
629{ 655{
630 while (PL_curstackinfo->si_next) 656 while (PL_curstackinfo->si_next)
631 PL_curstackinfo = PL_curstackinfo->si_next; 657 PL_curstackinfo = PL_curstackinfo->si_next;
632 658
633 while (PL_curstackinfo) 659 while (PL_curstackinfo)
… …
782 808
783 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 809 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
784} 810}
785 811
786static void 812static void
813prepare_nop (pTHX_ struct coro_transfer_args *ta)
814{
815 /* kind of mega-hacky, but works */
816 ta->next = ta->prev = (struct coro *)ta;
817}
818
819static int
820slf_check_nop (pTHX_ struct CoroSLF *frame)
821{
822 return 0;
823}
824
825static UNOP coro_setup_op;
826
827static void NOINLINE /* noinline to keep it out of the transfer fast path */
787coro_setup (pTHX_ struct coro *coro) 828coro_setup (pTHX_ struct coro *coro)
788{ 829{
789 /* 830 /*
790 * emulate part of the perl startup here. 831 * emulate part of the perl startup here.
791 */ 832 */
… …
815 PL_rs = newSVsv (GvSV (irsgv)); 856 PL_rs = newSVsv (GvSV (irsgv));
816 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
817 858
818 { 859 {
819 dSP; 860 dSP;
820 LOGOP myop; 861 UNOP myop;
821 862
822 Zero (&myop, 1, LOGOP); 863 Zero (&myop, 1, UNOP);
823 myop.op_next = Nullop; 864 myop.op_next = Nullop;
824 myop.op_flags = OPf_WANT_VOID; 865 myop.op_flags = OPf_WANT_VOID;
825 866
826 PUSHMARK (SP); 867 PUSHMARK (SP);
827 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
828 PUTBACK; 869 PUTBACK;
… …
830 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
831 SPAGAIN; 872 SPAGAIN;
832 } 873 }
833 874
834 /* this newly created coroutine might be run on an existing cctx which most 875 /* this newly created coroutine might be run on an existing cctx which most
835 * likely was suspended in set_stacklevel, called from entersub. 876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
836 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
837 * so we ENTER here for symmetry
838 */ 877 */
839 ENTER; 878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
840} 879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
841 880
881 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882 coro_setup_op.op_next = PL_op;
883 coro_setup_op.op_type = OP_CUSTOM;
884 coro_setup_op.op_ppaddr = pp_slf;
885 /* no flags required, as an init function won't be called */
886
887 PL_op = (OP *)&coro_setup_op;
888
889 /* copy throw, in case it was set before coro_setup */
890 coro_throw = coro->throw;
891}
892
842static void 893static void
843coro_destroy (pTHX_ struct coro *coro) 894coro_destruct (pTHX_ struct coro *coro)
844{ 895{
845 if (!IN_DESTRUCT) 896 if (!IN_DESTRUCT)
846 { 897 {
847 /* restore all saved variables and stuff */ 898 /* restore all saved variables and stuff */
848 LEAVE_SCOPE (0); 899 LEAVE_SCOPE (0);
… …
868 919
869 SvREFCNT_dec (PL_diehook); 920 SvREFCNT_dec (PL_diehook);
870 SvREFCNT_dec (PL_warnhook); 921 SvREFCNT_dec (PL_warnhook);
871 922
872 SvREFCNT_dec (coro->saved_deffh); 923 SvREFCNT_dec (coro->saved_deffh);
873 SvREFCNT_dec (coro->throw); 924 SvREFCNT_dec (coro_throw);
874 925
875 coro_destroy_stacks (aTHX); 926 coro_destruct_stacks (aTHX);
876} 927}
877 928
878static void 929INLINE void
879free_coro_mortal (pTHX) 930free_coro_mortal (pTHX)
880{ 931{
881 if (expect_true (coro_mortal)) 932 if (expect_true (coro_mortal))
882 { 933 {
883 SvREFCNT_dec (coro_mortal); 934 SvREFCNT_dec (coro_mortal);
… …
888static int 939static int
889runops_trace (pTHX) 940runops_trace (pTHX)
890{ 941{
891 COP *oldcop = 0; 942 COP *oldcop = 0;
892 int oldcxix = -2; 943 int oldcxix = -2;
893 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 944 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
894 coro_cctx *cctx = coro->cctx; 945 coro_cctx *cctx = coro->cctx;
895 946
896 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
897 { 948 {
898 PERL_ASYNC_CHECK (); 949 PERL_ASYNC_CHECK ();
… …
1007 1058
1008 TAINT_NOT; 1059 TAINT_NOT;
1009 return 0; 1060 return 0;
1010} 1061}
1011 1062
1012/* inject a fake call to Coro::State::_cctx_init into the execution */ 1063static struct coro_cctx *cctx_ssl_cctx;
1013/* _cctx_init should be careful, as it could be called at almost any time */ 1064static struct CoroSLF cctx_ssl_frame;
1014/* during execution of a perl program */ 1065
1066static void
1067slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068{
1069 ta->prev = (struct coro *)cctx_ssl_cctx;
1070 ta->next = 0;
1071}
1072
1073static int
1074slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075{
1076 *frame = cctx_ssl_frame;
1077
1078 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079}
1080
1081/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1015static void NOINLINE 1082static void NOINLINE
1016cctx_prepare (pTHX_ coro_cctx *cctx) 1083cctx_prepare (pTHX_ coro_cctx *cctx)
1017{ 1084{
1018 dSP;
1019 LOGOP myop;
1020
1021 PL_top_env = &PL_start_env; 1085 PL_top_env = &PL_start_env;
1022 1086
1023 if (cctx->flags & CC_TRACE) 1087 if (cctx->flags & CC_TRACE)
1024 PL_runops = runops_trace; 1088 PL_runops = runops_trace;
1025 1089
1026 Zero (&myop, 1, LOGOP); 1090 /* we already must be executing an SLF op, there is no other valid way
1027 myop.op_next = PL_op; 1091 * that can lead to creation of a new cctx */
1028 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1092 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1029 1094
1030 PUSHMARK (SP); 1095 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1031 EXTEND (SP, 2); 1096 cctx_ssl_cctx = cctx;
1032 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1097 cctx_ssl_frame = slf_frame;
1033 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1098
1034 PUTBACK; 1099 slf_frame.prepare = slf_prepare_set_stacklevel;
1035 PL_op = (OP *)&myop; 1100 slf_frame.check = slf_check_set_stacklevel;
1036 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1101}
1037 SPAGAIN; 1102
1103/* the tail of transfer: execute stuff we can only do after a transfer */
1104INLINE void
1105transfer_tail (pTHX)
1106{
1107 free_coro_mortal (aTHX);
1038} 1108}
1039 1109
1040/* 1110/*
1041 * this is a _very_ stripped down perl interpreter ;) 1111 * this is a _very_ stripped down perl interpreter ;)
1042 */ 1112 */
1043static void 1113static void
1044cctx_run (void *arg) 1114cctx_run (void *arg)
1045{ 1115{
1116#ifdef USE_ITHREADS
1117# if CORO_PTHREAD
1118 PERL_SET_CONTEXT (coro_thx);
1119# endif
1120#endif
1121 {
1046 dTHX; 1122 dTHX;
1047 1123
1048 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1124 /* normally we would need to skip the entersub here */
1049 UNLOCK; 1125 /* not doing so will re-execute it, which is exactly what we want */
1050
1051 /* we now skip the entersub that lead to transfer() */
1052 PL_op = PL_op->op_next; 1126 /* PL_nop = PL_nop->op_next */
1053 1127
1054 /* inject a fake subroutine call to cctx_init */ 1128 /* inject a fake subroutine call to cctx_init */
1055 cctx_prepare (aTHX_ (coro_cctx *)arg); 1129 cctx_prepare (aTHX_ (coro_cctx *)arg);
1056 1130
1131 /* cctx_run is the alternative tail of transfer() */
1132 transfer_tail (aTHX);
1133
1057 /* somebody or something will hit me for both perl_run and PL_restartop */ 1134 /* somebody or something will hit me for both perl_run and PL_restartop */
1058 PL_restartop = PL_op; 1135 PL_restartop = PL_op;
1059 perl_run (PL_curinterp); 1136 perl_run (PL_curinterp);
1060 1137
1061 /* 1138 /*
1062 * If perl-run returns we assume exit() was being called or the coro 1139 * If perl-run returns we assume exit() was being called or the coro
1063 * fell off the end, which seems to be the only valid (non-bug) 1140 * fell off the end, which seems to be the only valid (non-bug)
1064 * reason for perl_run to return. We try to exit by jumping to the 1141 * reason for perl_run to return. We try to exit by jumping to the
1065 * bootstrap-time "top" top_env, as we cannot restore the "main" 1142 * bootstrap-time "top" top_env, as we cannot restore the "main"
1066 * coroutine as Coro has no such concept 1143 * coroutine as Coro has no such concept
1067 */ 1144 */
1068 PL_top_env = main_top_env; 1145 PL_top_env = main_top_env;
1069 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1146 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1147 }
1070} 1148}
1071 1149
1072static coro_cctx * 1150static coro_cctx *
1073cctx_new () 1151cctx_new ()
1074{ 1152{
1075 coro_cctx *cctx; 1153 coro_cctx *cctx;
1154
1155 ++cctx_count;
1156 New (0, cctx, 1, coro_cctx);
1157
1158 cctx->gen = cctx_gen;
1159 cctx->flags = 0;
1160 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1161
1162 return cctx;
1163}
1164
1165/* create a new cctx only suitable as source */
1166static coro_cctx *
1167cctx_new_empty ()
1168{
1169 coro_cctx *cctx = cctx_new ();
1170
1171 cctx->sptr = 0;
1172 coro_create (&cctx->cctx, 0, 0, 0, 0);
1173
1174 return cctx;
1175}
1176
1177/* create a new cctx suitable as destination/running a perl interpreter */
1178static coro_cctx *
1179cctx_new_run ()
1180{
1181 coro_cctx *cctx = cctx_new ();
1076 void *stack_start; 1182 void *stack_start;
1077 size_t stack_size; 1183 size_t stack_size;
1078 1184
1079 ++cctx_count;
1080
1081 Newz (0, cctx, 1, coro_cctx);
1082
1083#if HAVE_MMAP 1185#if HAVE_MMAP
1084 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1186 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1085 /* mmap supposedly does allocate-on-write for us */ 1187 /* mmap supposedly does allocate-on-write for us */
1086 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1188 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1087 1189
1088 if (cctx->sptr != (void *)-1) 1190 if (cctx->sptr != (void *)-1)
1089 { 1191 {
1090# if CORO_STACKGUARD 1192 #if CORO_STACKGUARD
1091 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1193 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1092# endif 1194 #endif
1093 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1195 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1094 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1196 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1095 cctx->flags |= CC_MAPPED; 1197 cctx->flags |= CC_MAPPED;
1096 } 1198 }
1097 else 1199 else
1098#endif 1200#endif
1099 { 1201 {
1100 cctx->ssize = coro_stacksize * (long)sizeof (long); 1202 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1101 New (0, cctx->sptr, coro_stacksize, long); 1203 New (0, cctx->sptr, cctx_stacksize, long);
1102 1204
1103 if (!cctx->sptr) 1205 if (!cctx->sptr)
1104 { 1206 {
1105 perror ("FATAL: unable to allocate stack for coroutine"); 1207 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1106 _exit (EXIT_FAILURE); 1208 _exit (EXIT_FAILURE);
1107 } 1209 }
1108 1210
1109 stack_start = cctx->sptr; 1211 stack_start = cctx->sptr;
1110 stack_size = cctx->ssize; 1212 stack_size = cctx->ssize;
1111 } 1213 }
1112 1214
1113 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1215 #if CORO_USE_VALGRIND
1216 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1217 #endif
1218
1114 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1219 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1115 1220
1116 return cctx; 1221 return cctx;
1117} 1222}
1118 1223
… …
1121{ 1226{
1122 if (!cctx) 1227 if (!cctx)
1123 return; 1228 return;
1124 1229
1125 --cctx_count; 1230 --cctx_count;
1231 coro_destroy (&cctx->cctx);
1126 1232
1233 /* coro_transfer creates new, empty cctx's */
1234 if (cctx->sptr)
1235 {
1127#if CORO_USE_VALGRIND 1236 #if CORO_USE_VALGRIND
1128 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1237 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1129#endif 1238 #endif
1130 1239
1131#if HAVE_MMAP 1240#if HAVE_MMAP
1132 if (cctx->flags & CC_MAPPED) 1241 if (cctx->flags & CC_MAPPED)
1133 munmap (cctx->sptr, cctx->ssize); 1242 munmap (cctx->sptr, cctx->ssize);
1134 else 1243 else
1135#endif 1244#endif
1136 Safefree (cctx->sptr); 1245 Safefree (cctx->sptr);
1246 }
1137 1247
1138 Safefree (cctx); 1248 Safefree (cctx);
1139} 1249}
1140 1250
1141/* wether this cctx should be destructed */ 1251/* wether this cctx should be destructed */
1142#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1252#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1143 1253
1144static coro_cctx * 1254static coro_cctx *
1145cctx_get (pTHX) 1255cctx_get (pTHX)
1146{ 1256{
1147 while (expect_true (cctx_first)) 1257 while (expect_true (cctx_first))
… …
1154 return cctx; 1264 return cctx;
1155 1265
1156 cctx_destroy (cctx); 1266 cctx_destroy (cctx);
1157 } 1267 }
1158 1268
1159 return cctx_new (); 1269 return cctx_new_run ();
1160} 1270}
1161 1271
1162static void 1272static void
1163cctx_put (coro_cctx *cctx) 1273cctx_put (coro_cctx *cctx)
1164{ 1274{
1275 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1276
1165 /* free another cctx if overlimit */ 1277 /* free another cctx if overlimit */
1166 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1278 if (expect_false (cctx_idle >= cctx_max_idle))
1167 { 1279 {
1168 coro_cctx *first = cctx_first; 1280 coro_cctx *first = cctx_first;
1169 cctx_first = first->next; 1281 cctx_first = first->next;
1170 --cctx_idle; 1282 --cctx_idle;
1171 1283
… …
1180/** coroutine switching *****************************************************/ 1292/** coroutine switching *****************************************************/
1181 1293
1182static void 1294static void
1183transfer_check (pTHX_ struct coro *prev, struct coro *next) 1295transfer_check (pTHX_ struct coro *prev, struct coro *next)
1184{ 1296{
1297 /* TODO: throwing up here is considered harmful */
1298
1185 if (expect_true (prev != next)) 1299 if (expect_true (prev != next))
1186 { 1300 {
1187 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1188 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1189 1303
1190 if (expect_false (next->flags & CF_RUNNING)) 1304 if (expect_false (next->flags & CF_RUNNING))
1191 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1192 1306
1193 if (expect_false (next->flags & CF_DESTROYED)) 1307 if (expect_false (next->flags & CF_DESTROYED))
1194 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1195 1309
1196#if !PERL_VERSION_ATLEAST (5,10,0) 1310#if !PERL_VERSION_ATLEAST (5,10,0)
1197 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1311 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1198 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1199#endif 1313#endif
1200 } 1314 }
1201} 1315}
1202 1316
1203/* always use the TRANSFER macro */ 1317/* always use the TRANSFER macro */
1204static void NOINLINE 1318static void NOINLINE /* noinline so we have a fixed stackframe */
1205transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1206{ 1320{
1207 dSTACKLEVEL; 1321 dSTACKLEVEL;
1208 static volatile int has_throw;
1209 1322
1210 /* sometimes transfer is only called to set idle_sp */ 1323 /* sometimes transfer is only called to set idle_sp */
1211 if (expect_false (!next)) 1324 if (expect_false (!next))
1212 { 1325 {
1213 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
… …
1217 { 1330 {
1218 coro_cctx *prev__cctx; 1331 coro_cctx *prev__cctx;
1219 1332
1220 if (expect_false (prev->flags & CF_NEW)) 1333 if (expect_false (prev->flags & CF_NEW))
1221 { 1334 {
1222 /* create a new empty context */ 1335 /* create a new empty/source context */
1223 Newz (0, prev->cctx, 1, coro_cctx); 1336 prev->cctx = cctx_new_empty ();
1224 prev->flags &= ~CF_NEW; 1337 prev->flags &= ~CF_NEW;
1225 prev->flags |= CF_RUNNING; 1338 prev->flags |= CF_RUNNING;
1226 } 1339 }
1227 1340
1228 prev->flags &= ~CF_RUNNING; 1341 prev->flags &= ~CF_RUNNING;
1229 next->flags |= CF_RUNNING; 1342 next->flags |= CF_RUNNING;
1230
1231 LOCK;
1232 1343
1233 /* first get rid of the old state */ 1344 /* first get rid of the old state */
1234 save_perl (aTHX_ prev); 1345 save_perl (aTHX_ prev);
1235 1346
1236 if (expect_false (next->flags & CF_NEW)) 1347 if (expect_false (next->flags & CF_NEW))
… …
1243 else 1354 else
1244 load_perl (aTHX_ next); 1355 load_perl (aTHX_ next);
1245 1356
1246 prev__cctx = prev->cctx; 1357 prev__cctx = prev->cctx;
1247 1358
1248 /* possibly "free" the cctx */ 1359 /* possibly untie and reuse the cctx */
1249 if (expect_true ( 1360 if (expect_true (
1250 prev__cctx->idle_sp == STACKLEVEL 1361 prev__cctx->idle_sp == STACKLEVEL
1251 && !(prev__cctx->flags & CC_TRACE) 1362 && !(prev__cctx->flags & CC_TRACE)
1252 && !force_cctx 1363 && !force_cctx
1253 )) 1364 ))
1254 { 1365 {
1255 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1366 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1256 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1367 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1257 1368
1258 prev->cctx = 0; 1369 prev->cctx = 0;
1259 1370
1260 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1371 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1261 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1372 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1268 1379
1269 ++next->usecount; 1380 ++next->usecount;
1270 1381
1271 if (expect_true (!next->cctx)) 1382 if (expect_true (!next->cctx))
1272 next->cctx = cctx_get (aTHX); 1383 next->cctx = cctx_get (aTHX);
1273
1274 has_throw = !!next->throw;
1275 1384
1276 if (expect_false (prev__cctx != next->cctx)) 1385 if (expect_false (prev__cctx != next->cctx))
1277 { 1386 {
1278 prev__cctx->top_env = PL_top_env; 1387 prev__cctx->top_env = PL_top_env;
1279 PL_top_env = next->cctx->top_env; 1388 PL_top_env = next->cctx->top_env;
1280 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1281 } 1390 }
1282 1391
1283 free_coro_mortal (aTHX); 1392 transfer_tail (aTHX);
1284 UNLOCK;
1285
1286 if (expect_false (has_throw))
1287 {
1288 struct coro *coro = SvSTATE (coro_current);
1289
1290 if (coro->throw)
1291 {
1292 SV *exception = coro->throw;
1293 coro->throw = 0;
1294 sv_setsv (ERRSV, exception);
1295 croak (0);
1296 }
1297 }
1298 } 1393 }
1299} 1394}
1300
1301struct transfer_args
1302{
1303 struct coro *prev, *next;
1304};
1305 1395
1306#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1307#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1308 1398
1309/** high level stuff ********************************************************/ 1399/** high level stuff ********************************************************/
… …
1311static int 1401static int
1312coro_state_destroy (pTHX_ struct coro *coro) 1402coro_state_destroy (pTHX_ struct coro *coro)
1313{ 1403{
1314 if (coro->flags & CF_DESTROYED) 1404 if (coro->flags & CF_DESTROYED)
1315 return 0; 1405 return 0;
1406
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro);
1316 1409
1317 coro->flags |= CF_DESTROYED; 1410 coro->flags |= CF_DESTROYED;
1318 1411
1319 if (coro->flags & CF_READY) 1412 if (coro->flags & CF_READY)
1320 { 1413 {
1321 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1414 /* reduce nready, as destroying a ready coro effectively unreadies it */
1322 /* alternative: look through all ready queues and remove the coro */ 1415 /* alternative: look through all ready queues and remove the coro */
1323 LOCK;
1324 --coro_nready; 1416 --coro_nready;
1325 UNLOCK;
1326 } 1417 }
1327 else 1418 else
1328 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1329 1420
1330 if (coro->mainstack && coro->mainstack != main_mainstack) 1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1331 { 1422 {
1332 struct coro temp; 1423 struct coro temp;
1333 1424
1334 if (coro->flags & CF_RUNNING) 1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1335 croak ("FATAL: tried to destroy currently running coroutine");
1336 1426
1337 save_perl (aTHX_ &temp); 1427 save_perl (aTHX_ &temp);
1338 load_perl (aTHX_ coro); 1428 load_perl (aTHX_ coro);
1339 1429
1340 coro_destroy (aTHX_ coro); 1430 coro_destruct (aTHX_ coro);
1341 1431
1342 load_perl (aTHX_ &temp); 1432 load_perl (aTHX_ &temp);
1343 1433
1344 coro->slot = 0; 1434 coro->slot = 0;
1345 } 1435 }
… …
1391# define MGf_DUP 0 1481# define MGf_DUP 0
1392#endif 1482#endif
1393}; 1483};
1394 1484
1395static void 1485static void
1396prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1486prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1397{ 1487{
1398 ta->prev = SvSTATE (prev_sv); 1488 ta->prev = SvSTATE (prev_sv);
1399 ta->next = SvSTATE (next_sv); 1489 ta->next = SvSTATE (next_sv);
1400 TRANSFER_CHECK (*ta); 1490 TRANSFER_CHECK (*ta);
1401} 1491}
1402 1492
1403static void 1493static void
1404api_transfer (SV *prev_sv, SV *next_sv) 1494api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1405{ 1495{
1406 dTHX;
1407 struct transfer_args ta; 1496 struct coro_transfer_args ta;
1408 1497
1409 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1410 TRANSFER (ta, 1); 1499 TRANSFER (ta, 1);
1411} 1500}
1412 1501
1413/** Coro ********************************************************************/ 1502/** Coro ********************************************************************/
1414 1503
1415static void 1504INLINE void
1416coro_enq (pTHX_ SV *coro_sv) 1505coro_enq (pTHX_ struct coro *coro)
1417{ 1506{
1418 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1419} 1508}
1420 1509
1421static SV * 1510INLINE SV *
1422coro_deq (pTHX) 1511coro_deq (pTHX)
1423{ 1512{
1424 int prio; 1513 int prio;
1425 1514
1426 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1429 1518
1430 return 0; 1519 return 0;
1431} 1520}
1432 1521
1433static int 1522static int
1434api_ready (SV *coro_sv) 1523api_ready (pTHX_ SV *coro_sv)
1435{ 1524{
1436 dTHX;
1437 struct coro *coro; 1525 struct coro *coro;
1438 SV *sv_hook; 1526 SV *sv_hook;
1439 void (*xs_hook)(void); 1527 void (*xs_hook)(void);
1440 1528
1441 if (SvROK (coro_sv)) 1529 if (SvROK (coro_sv))
… …
1446 if (coro->flags & CF_READY) 1534 if (coro->flags & CF_READY)
1447 return 0; 1535 return 0;
1448 1536
1449 coro->flags |= CF_READY; 1537 coro->flags |= CF_READY;
1450 1538
1451 LOCK;
1452
1453 sv_hook = coro_nready ? 0 : coro_readyhook; 1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1454 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1455 1541
1456 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1542 coro_enq (aTHX_ coro);
1457 ++coro_nready; 1543 ++coro_nready;
1458 1544
1459 UNLOCK;
1460
1461 if (sv_hook) 1545 if (sv_hook)
1462 { 1546 {
1463 dSP; 1547 dSP;
1464 1548
1465 ENTER; 1549 ENTER;
1466 SAVETMPS; 1550 SAVETMPS;
1467 1551
1468 PUSHMARK (SP); 1552 PUSHMARK (SP);
1469 PUTBACK; 1553 PUTBACK;
1470 call_sv (sv_hook, G_DISCARD); 1554 call_sv (sv_hook, G_VOID | G_DISCARD);
1471 SPAGAIN;
1472 1555
1473 FREETMPS; 1556 FREETMPS;
1474 LEAVE; 1557 LEAVE;
1475 } 1558 }
1476 1559
… …
1479 1562
1480 return 1; 1563 return 1;
1481} 1564}
1482 1565
1483static int 1566static int
1484api_is_ready (SV *coro_sv) 1567api_is_ready (pTHX_ SV *coro_sv)
1485{ 1568{
1486 dTHX;
1487 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1569 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1488} 1570}
1489 1571
1490static void 1572INLINE void
1491prepare_schedule (pTHX_ struct transfer_args *ta) 1573prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1492{ 1574{
1493 SV *prev_sv, *next_sv; 1575 SV *prev_sv, *next_sv;
1494 1576
1495 for (;;) 1577 for (;;)
1496 { 1578 {
1497 LOCK;
1498 next_sv = coro_deq (aTHX); 1579 next_sv = coro_deq (aTHX);
1499 1580
1500 /* nothing to schedule: call the idle handler */ 1581 /* nothing to schedule: call the idle handler */
1501 if (expect_false (!next_sv)) 1582 if (expect_false (!next_sv))
1502 { 1583 {
1503 dSP; 1584 dSP;
1504 UNLOCK;
1505 1585
1506 ENTER; 1586 ENTER;
1507 SAVETMPS; 1587 SAVETMPS;
1508 1588
1509 PUSHMARK (SP); 1589 PUSHMARK (SP);
1510 PUTBACK; 1590 PUTBACK;
1511 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1591 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1512 SPAGAIN;
1513 1592
1514 FREETMPS; 1593 FREETMPS;
1515 LEAVE; 1594 LEAVE;
1516 continue; 1595 continue;
1517 } 1596 }
1518 1597
1519 ta->next = SvSTATE (next_sv); 1598 ta->next = SvSTATE_hv (next_sv);
1520 1599
1521 /* cannot transfer to destroyed coros, skip and look for next */ 1600 /* cannot transfer to destroyed coros, skip and look for next */
1522 if (expect_false (ta->next->flags & CF_DESTROYED)) 1601 if (expect_false (ta->next->flags & CF_DESTROYED))
1523 { 1602 {
1524 UNLOCK;
1525 SvREFCNT_dec (next_sv); 1603 SvREFCNT_dec (next_sv);
1526 /* coro_nready is already taken care of by destroy */ 1604 /* coro_nready has already been taken care of by destroy */
1527 continue; 1605 continue;
1528 } 1606 }
1529 1607
1530 --coro_nready; 1608 --coro_nready;
1531 UNLOCK;
1532 break; 1609 break;
1533 } 1610 }
1534 1611
1535 /* free this only after the transfer */ 1612 /* free this only after the transfer */
1536 prev_sv = SvRV (coro_current); 1613 prev_sv = SvRV (coro_current);
1537 ta->prev = SvSTATE (prev_sv); 1614 ta->prev = SvSTATE_hv (prev_sv);
1538 TRANSFER_CHECK (*ta); 1615 TRANSFER_CHECK (*ta);
1539 assert (ta->next->flags & CF_READY); 1616 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1540 ta->next->flags &= ~CF_READY; 1617 ta->next->flags &= ~CF_READY;
1541 SvRV_set (coro_current, next_sv); 1618 SvRV_set (coro_current, next_sv);
1542 1619
1543 LOCK;
1544 free_coro_mortal (aTHX); 1620 free_coro_mortal (aTHX);
1545 coro_mortal = prev_sv; 1621 coro_mortal = prev_sv;
1546 UNLOCK;
1547} 1622}
1548 1623
1549static void 1624INLINE void
1550prepare_cede (pTHX_ struct transfer_args *ta) 1625prepare_cede (pTHX_ struct coro_transfer_args *ta)
1551{ 1626{
1552 api_ready (coro_current); 1627 api_ready (aTHX_ coro_current);
1553 prepare_schedule (aTHX_ ta); 1628 prepare_schedule (aTHX_ ta);
1554} 1629}
1555 1630
1631INLINE void
1632prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1633{
1634 SV *prev = SvRV (coro_current);
1635
1636 if (coro_nready)
1637 {
1638 prepare_schedule (aTHX_ ta);
1639 api_ready (aTHX_ prev);
1640 }
1641 else
1642 prepare_nop (aTHX_ ta);
1643}
1644
1645static void
1646api_schedule (pTHX)
1647{
1648 struct coro_transfer_args ta;
1649
1650 prepare_schedule (aTHX_ &ta);
1651 TRANSFER (ta, 1);
1652}
1653
1556static int 1654static int
1557prepare_cede_notself (pTHX_ struct transfer_args *ta) 1655api_cede (pTHX)
1558{ 1656{
1559 if (coro_nready) 1657 struct coro_transfer_args ta;
1560 { 1658
1561 SV *prev = SvRV (coro_current);
1562 prepare_schedule (aTHX_ ta); 1659 prepare_cede (aTHX_ &ta);
1563 api_ready (prev); 1660
1661 if (expect_true (ta.prev != ta.next))
1662 {
1663 TRANSFER (ta, 1);
1564 return 1; 1664 return 1;
1565 } 1665 }
1566 else 1666 else
1567 return 0; 1667 return 0;
1568} 1668}
1569 1669
1570static void
1571api_schedule (void)
1572{
1573 dTHX;
1574 struct transfer_args ta;
1575
1576 prepare_schedule (aTHX_ &ta);
1577 TRANSFER (ta, 1);
1578}
1579
1580static int 1670static int
1581api_cede (void) 1671api_cede_notself (pTHX)
1582{ 1672{
1583 dTHX; 1673 if (coro_nready)
1674 {
1584 struct transfer_args ta; 1675 struct coro_transfer_args ta;
1585 1676
1586 prepare_cede (aTHX_ &ta); 1677 prepare_cede_notself (aTHX_ &ta);
1587
1588 if (expect_true (ta.prev != ta.next))
1589 {
1590 TRANSFER (ta, 1); 1678 TRANSFER (ta, 1);
1591 return 1; 1679 return 1;
1592 } 1680 }
1593 else 1681 else
1594 return 0; 1682 return 0;
1595} 1683}
1596 1684
1597static int 1685static void
1598api_cede_notself (void)
1599{
1600 dTHX;
1601 struct transfer_args ta;
1602
1603 if (prepare_cede_notself (aTHX_ &ta))
1604 {
1605 TRANSFER (ta, 1);
1606 return 1;
1607 }
1608 else
1609 return 0;
1610}
1611
1612static void
1613api_trace (SV *coro_sv, int flags) 1686api_trace (pTHX_ SV *coro_sv, int flags)
1614{ 1687{
1615 dTHX;
1616 struct coro *coro = SvSTATE (coro_sv); 1688 struct coro *coro = SvSTATE (coro_sv);
1617 1689
1618 if (flags & CC_TRACE) 1690 if (flags & CC_TRACE)
1619 { 1691 {
1620 if (!coro->cctx) 1692 if (!coro->cctx)
1621 coro->cctx = cctx_new (); 1693 coro->cctx = cctx_new_run ();
1622 else if (!(coro->cctx->flags & CC_TRACE)) 1694 else if (!(coro->cctx->flags & CC_TRACE))
1623 croak ("cannot enable tracing on coroutine with custom stack"); 1695 croak ("cannot enable tracing on coroutine with custom stack,");
1624 1696
1625 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1697 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1626 } 1698 }
1627 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1699 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1628 { 1700 {
… …
1633 else 1705 else
1634 coro->slot->runops = RUNOPS_DEFAULT; 1706 coro->slot->runops = RUNOPS_DEFAULT;
1635 } 1707 }
1636} 1708}
1637 1709
1710/*****************************************************************************/
1711/* schedule-like-function opcode (SLF) */
1712
1713static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1714static const CV *slf_cv;
1715static SV **slf_argv;
1716static int slf_argc, slf_arga; /* count, allocated */
1717static I32 slf_ax; /* top of stack, for restore */
1718
1719/* this restores the stack in the case we patched the entersub, to */
1720/* recreate the stack frame as perl will on following calls */
1721/* since entersub cleared the stack */
1722static OP *
1723pp_restore (pTHX)
1724{
1725 int i;
1726 SV **SP = PL_stack_base + slf_ax;
1727
1728 PUSHMARK (SP);
1729
1730 EXTEND (SP, slf_argc + 1);
1731
1732 for (i = 0; i < slf_argc; ++i)
1733 PUSHs (sv_2mortal (slf_argv [i]));
1734
1735 PUSHs ((SV *)CvGV (slf_cv));
1736
1737 RETURNOP (slf_restore.op_first);
1738}
1739
1638static int 1740static void
1639coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1741slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1640{ 1742{
1641 AV *padlist; 1743 SV **arg = (SV **)slf_frame.data;
1642 AV *av = (AV *)mg->mg_obj;
1643 1744
1644 abort (); 1745 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1645
1646 return 0;
1647} 1746}
1648 1747
1649static MGVTBL coro_gensub_vtbl = { 1748static void
1650 0, 0, 0, 0, 1749slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1651 coro_gensub_free 1750{
1652}; 1751 if (items != 2)
1752 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1753
1754 frame->prepare = slf_prepare_transfer;
1755 frame->check = slf_check_nop;
1756 frame->data = (void *)arg; /* let's hope it will stay valid */
1757}
1758
1759static void
1760slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1761{
1762 frame->prepare = prepare_schedule;
1763 frame->check = slf_check_nop;
1764}
1765
1766static void
1767slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768{
1769 frame->prepare = prepare_cede;
1770 frame->check = slf_check_nop;
1771}
1772
1773static void
1774slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1775{
1776 frame->prepare = prepare_cede_notself;
1777 frame->check = slf_check_nop;
1778}
1779
1780/*
1781 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same
1783 * stack offset
1784 * SLF stands for "schedule-like-function".
1785 */
1786static OP *
1787pp_slf (pTHX)
1788{
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790
1791 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare))
1795 {
1796 /* first iteration */
1797 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */
1800 SV *gv = *sp;
1801
1802 /* do a quick consistency check on the "function" object, and if it isn't */
1803 /* for us, divert to the real entersub */
1804 if (SvTYPE (gv) != SVt_PVGV
1805 || !GvCV (gv)
1806 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1807 return PL_ppaddr[OP_ENTERSUB](aTHX);
1808
1809 if (!(PL_op->op_flags & OPf_STACKED))
1810 {
1811 /* ampersand-form of call, use @_ instead of stack */
1812 AV *av = GvAV (PL_defgv);
1813 arg = AvARRAY (av);
1814 items = AvFILLp (av) + 1;
1815 }
1816
1817 /* now call the init function, which needs to set up slf_frame */
1818 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1819 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1820
1821 /* pop args */
1822 SP = PL_stack_base + POPMARK;
1823
1824 PUTBACK;
1825 }
1826
1827 /* now that we have a slf_frame, interpret it! */
1828 /* we use a callback system not to make the code needlessly */
1829 /* complicated, but so we can run multiple perl coros from one cctx */
1830
1831 do
1832 {
1833 struct coro_transfer_args ta;
1834
1835 slf_frame.prepare (aTHX_ &ta);
1836 TRANSFER (ta, 0);
1837
1838 checkmark = PL_stack_sp - PL_stack_base;
1839 }
1840 while (slf_frame.check (aTHX_ &slf_frame));
1841
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843
1844 /* exception handling */
1845 if (expect_false (coro_throw))
1846 {
1847 SV *exception = sv_2mortal (coro_throw);
1848
1849 coro_throw = 0;
1850 sv_setsv (ERRSV, exception);
1851 croak (0);
1852 }
1853
1854 /* return value handling - mostly like entersub */
1855 /* make sure we put something on the stack in scalar context */
1856 if (GIMME_V == G_SCALAR)
1857 {
1858 dSP;
1859 SV **bot = PL_stack_base + checkmark;
1860
1861 if (sp == bot) /* too few, push undef */
1862 bot [1] = &PL_sv_undef;
1863 else if (sp != bot + 1) /* too many, take last one */
1864 bot [1] = *sp;
1865
1866 SP = bot + 1;
1867
1868 PUTBACK;
1869 }
1870
1871 return NORMAL;
1872}
1873
1874static void
1875api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1876{
1877 int i;
1878 SV **arg = PL_stack_base + ax;
1879 int items = PL_stack_sp - arg + 1;
1880
1881 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1882
1883 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1884 && PL_op->op_ppaddr != pp_slf)
1885 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1886
1887 CvFLAGS (cv) |= CVf_SLF;
1888 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1889 slf_cv = cv;
1890
1891 /* we patch the op, and then re-run the whole call */
1892 /* we have to put the same argument on the stack for this to work */
1893 /* and this will be done by pp_restore */
1894 slf_restore.op_next = (OP *)&slf_restore;
1895 slf_restore.op_type = OP_CUSTOM;
1896 slf_restore.op_ppaddr = pp_restore;
1897 slf_restore.op_first = PL_op;
1898
1899 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1900
1901 if (PL_op->op_flags & OPf_STACKED)
1902 {
1903 if (items > slf_arga)
1904 {
1905 slf_arga = items;
1906 free (slf_argv);
1907 slf_argv = malloc (slf_arga * sizeof (SV *));
1908 }
1909
1910 slf_argc = items;
1911
1912 for (i = 0; i < items; ++i)
1913 slf_argv [i] = SvREFCNT_inc (arg [i]);
1914 }
1915 else
1916 slf_argc = 0;
1917
1918 PL_op->op_ppaddr = pp_slf;
1919 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1920
1921 PL_op = (OP *)&slf_restore;
1922}
1653 1923
1654/*****************************************************************************/ 1924/*****************************************************************************/
1655/* PerlIO::cede */ 1925/* PerlIO::cede */
1656 1926
1657typedef struct 1927typedef struct
… …
1685 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 1955 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1686 double now = nvtime (); 1956 double now = nvtime ();
1687 1957
1688 if (now >= self->next) 1958 if (now >= self->next)
1689 { 1959 {
1690 api_cede (); 1960 api_cede (aTHX);
1691 self->next = now + self->every; 1961 self->next = now + self->every;
1692 } 1962 }
1693 1963
1694 return PerlIOBuf_flush (aTHX_ f); 1964 return PerlIOBuf_flush (aTHX_ f);
1695} 1965}
… …
1724 PerlIOBuf_get_ptr, 1994 PerlIOBuf_get_ptr,
1725 PerlIOBuf_get_cnt, 1995 PerlIOBuf_get_cnt,
1726 PerlIOBuf_set_ptrcnt, 1996 PerlIOBuf_set_ptrcnt,
1727}; 1997};
1728 1998
1999/*****************************************************************************/
2000/* Coro::Semaphore */
2001
2002static void
2003coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2004{
2005 SV *count_sv = AvARRAY (av)[0];
2006 IV count = SvIVX (count_sv);
2007
2008 count += adjust;
2009 SvIVX (count_sv) = count;
2010
2011 /* now wake up as many waiters as are expected to lock */
2012 while (count > 0 && AvFILLp (av) > 0)
2013 {
2014 SV *cb;
2015
2016 /* swap first two elements so we can shift a waiter */
2017 AvARRAY (av)[0] = AvARRAY (av)[1];
2018 AvARRAY (av)[1] = count_sv;
2019 cb = av_shift (av);
2020
2021 if (SvOBJECT (cb))
2022 api_ready (aTHX_ cb);
2023 else
2024 croak ("callbacks not yet supported");
2025
2026 SvREFCNT_dec (cb);
2027
2028 --count;
2029 }
2030}
2031
2032static void
2033coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2034{
2035 /* call $sem->adjust (0) to possibly wake up some other waiters */
2036 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2037}
2038
2039static int
2040slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2041{
2042 AV *av = (AV *)frame->data;
2043 SV *count_sv = AvARRAY (av)[0];
2044
2045 /* if we are about to throw, don't actually acquire the lock, just throw */
2046 if (coro_throw)
2047 return 0;
2048 else if (SvIVX (count_sv) > 0)
2049 {
2050 SvSTATE_current->on_destroy = 0;
2051 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2052 return 0;
2053 }
2054 else
2055 {
2056 int i;
2057 /* if we were woken up but can't down, we look through the whole */
2058 /* waiters list and only add us if we aren't in there already */
2059 /* this avoids some degenerate memory usage cases */
2060
2061 for (i = 1; i <= AvFILLp (av); ++i)
2062 if (AvARRAY (av)[i] == SvRV (coro_current))
2063 return 1;
2064
2065 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2066 return 1;
2067 }
2068}
2069
2070static void
2071slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2072{
2073 AV *av = (AV *)SvRV (arg [0]);
2074
2075 if (SvIVX (AvARRAY (av)[0]) > 0)
2076 {
2077 frame->data = (void *)av;
2078 frame->prepare = prepare_nop;
2079 }
2080 else
2081 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule;
2086
2087 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */
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 /* if we are about to throw, return early */
2177 /* this does not cancel the aio request, but at least */
2178 /* it quickly returns */
2179 if (coro_throw)
2180 return 0;
2181
2182 /* one element that is an RV? repeat! */
2183 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2184 return 1;
2185
2186 /* restore status */
2187 {
2188 SV *data_sv = av_pop (state);
2189 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2190
2191 errno = data->errorno;
2192 PL_laststype = data->laststype;
2193 PL_laststatval = data->laststatval;
2194 PL_statcache = data->statcache;
2195
2196 SvREFCNT_dec (data_sv);
2197 }
2198
2199 /* push result values */
2200 {
2201 dSP;
2202 int i;
2203
2204 EXTEND (SP, AvFILLp (state) + 1);
2205 for (i = 0; i <= AvFILLp (state); ++i)
2206 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2207
2208 PUTBACK;
2209 }
2210
2211 return 0;
2212}
2213
2214static void
2215slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2216{
2217 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2218 SV *coro_hv = SvRV (coro_current);
2219 struct coro *coro = SvSTATE_hv (coro_hv);
2220
2221 /* put our coroutine id on the state arg */
2222 av_push (state, SvREFCNT_inc_NN (coro_hv));
2223
2224 /* first see whether we have a non-zero priority and set it as AIO prio */
2225 if (coro->prio)
2226 {
2227 dSP;
2228
2229 static SV *prio_cv;
2230 static SV *prio_sv;
2231
2232 if (expect_false (!prio_cv))
2233 {
2234 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2235 prio_sv = newSViv (0);
2236 }
2237
2238 PUSHMARK (SP);
2239 sv_setiv (prio_sv, coro->prio);
2240 XPUSHs (prio_sv);
2241
2242 PUTBACK;
2243 call_sv (prio_cv, G_VOID | G_DISCARD);
2244 }
2245
2246 /* now call the original request */
2247 {
2248 dSP;
2249 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2250 int i;
2251
2252 PUSHMARK (SP);
2253
2254 /* first push all args to the stack */
2255 EXTEND (SP, items + 1);
2256
2257 for (i = 0; i < items; ++i)
2258 PUSHs (arg [i]);
2259
2260 /* now push the callback closure */
2261 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2262
2263 /* now call the AIO function - we assume our request is uncancelable */
2264 PUTBACK;
2265 call_sv ((SV *)req, G_VOID | G_DISCARD);
2266 }
2267
2268 /* now that the requets is going, we loop toll we have a result */
2269 frame->data = (void *)state;
2270 frame->prepare = prepare_schedule;
2271 frame->check = slf_check_aio_req;
2272}
2273
2274static void
2275coro_aio_req_xs (pTHX_ CV *cv)
2276{
2277 dXSARGS;
2278
2279 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2280
2281 XSRETURN_EMPTY;
2282}
2283
2284/*****************************************************************************/
1729 2285
1730MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2286MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1731 2287
1732PROTOTYPES: DISABLE 2288PROTOTYPES: DISABLE
1733 2289
1734BOOT: 2290BOOT:
1735{ 2291{
1736#ifdef USE_ITHREADS 2292#ifdef USE_ITHREADS
1737 MUTEX_INIT (&coro_mutex); 2293# if CORO_PTHREAD
2294 coro_thx = PERL_GET_CONTEXT;
2295# endif
1738#endif 2296#endif
1739 BOOT_PAGESIZE; 2297 BOOT_PAGESIZE;
1740 2298
1741 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2299 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1742 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2300 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1760 main_top_env = PL_top_env; 2318 main_top_env = PL_top_env;
1761 2319
1762 while (main_top_env->je_prev) 2320 while (main_top_env->je_prev)
1763 main_top_env = main_top_env->je_prev; 2321 main_top_env = main_top_env->je_prev;
1764 2322
2323 {
2324 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2325
2326 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2327 hv_store_ent (PL_custom_op_names, slf,
2328 newSVpv ("coro_slf", 0), 0);
2329
2330 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2331 hv_store_ent (PL_custom_op_descs, slf,
2332 newSVpv ("coro schedule like function", 0), 0);
2333 }
2334
1765 coroapi.ver = CORO_API_VERSION; 2335 coroapi.ver = CORO_API_VERSION;
1766 coroapi.rev = CORO_API_REVISION; 2336 coroapi.rev = CORO_API_REVISION;
2337
1767 coroapi.transfer = api_transfer; 2338 coroapi.transfer = api_transfer;
2339
2340 coroapi.sv_state = SvSTATE_;
2341 coroapi.execute_slf = api_execute_slf;
2342 coroapi.prepare_nop = prepare_nop;
2343 coroapi.prepare_schedule = prepare_schedule;
2344 coroapi.prepare_cede = prepare_cede;
2345 coroapi.prepare_cede_notself = prepare_cede_notself;
1768 2346
1769 { 2347 {
1770 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2348 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1771 2349
1772 if (!svp) croak ("Time::HiRes is required"); 2350 if (!svp) croak ("Time::HiRes is required");
… …
1805 av_push (coro->args, newSVsv (ST (i))); 2383 av_push (coro->args, newSVsv (ST (i)));
1806} 2384}
1807 OUTPUT: 2385 OUTPUT:
1808 RETVAL 2386 RETVAL
1809 2387
1810# these not obviously related functions are all rolled into the same xs
1811# function to increase chances that they all will call transfer with the same
1812# stack offset
1813void 2388void
1814_set_stacklevel (...) 2389transfer (...)
1815 ALIAS: 2390 PROTOTYPE: $$
1816 Coro::State::transfer = 1 2391 CODE:
1817 Coro::schedule = 2 2392 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1818 Coro::cede = 3
1819 Coro::cede_notself = 4
1820 CODE:
1821{
1822 struct transfer_args ta;
1823
1824 PUTBACK;
1825 switch (ix)
1826 {
1827 case 0:
1828 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1829 ta.next = 0;
1830 break;
1831
1832 case 1:
1833 if (items != 2)
1834 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1835
1836 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1837 break;
1838
1839 case 2:
1840 prepare_schedule (aTHX_ &ta);
1841 break;
1842
1843 case 3:
1844 prepare_cede (aTHX_ &ta);
1845 break;
1846
1847 case 4:
1848 if (!prepare_cede_notself (aTHX_ &ta))
1849 XSRETURN_EMPTY;
1850
1851 break;
1852 }
1853 SPAGAIN;
1854
1855 BARRIER;
1856 PUTBACK;
1857 TRANSFER (ta, 0);
1858 SPAGAIN; /* might be the sp of a different coroutine now */
1859 /* be extra careful not to ever do anything after TRANSFER */
1860}
1861 2393
1862bool 2394bool
1863_destroy (SV *coro_sv) 2395_destroy (SV *coro_sv)
1864 CODE: 2396 CODE:
1865 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2397 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1872 CODE: 2404 CODE:
1873 _exit (code); 2405 _exit (code);
1874 2406
1875int 2407int
1876cctx_stacksize (int new_stacksize = 0) 2408cctx_stacksize (int new_stacksize = 0)
2409 PROTOTYPE: ;$
1877 CODE: 2410 CODE:
1878 RETVAL = coro_stacksize; 2411 RETVAL = cctx_stacksize;
1879 if (new_stacksize) 2412 if (new_stacksize)
2413 {
1880 coro_stacksize = new_stacksize; 2414 cctx_stacksize = new_stacksize;
2415 ++cctx_gen;
2416 }
1881 OUTPUT: 2417 OUTPUT:
1882 RETVAL 2418 RETVAL
1883 2419
1884int 2420int
2421cctx_max_idle (int max_idle = 0)
2422 PROTOTYPE: ;$
2423 CODE:
2424 RETVAL = cctx_max_idle;
2425 if (max_idle > 1)
2426 cctx_max_idle = max_idle;
2427 OUTPUT:
2428 RETVAL
2429
2430int
1885cctx_count () 2431cctx_count ()
2432 PROTOTYPE:
1886 CODE: 2433 CODE:
1887 RETVAL = cctx_count; 2434 RETVAL = cctx_count;
1888 OUTPUT: 2435 OUTPUT:
1889 RETVAL 2436 RETVAL
1890 2437
1891int 2438int
1892cctx_idle () 2439cctx_idle ()
2440 PROTOTYPE:
1893 CODE: 2441 CODE:
1894 RETVAL = cctx_idle; 2442 RETVAL = cctx_idle;
1895 OUTPUT: 2443 OUTPUT:
1896 RETVAL 2444 RETVAL
1897 2445
1898void 2446void
1899list () 2447list ()
2448 PROTOTYPE:
1900 PPCODE: 2449 PPCODE:
1901{ 2450{
1902 struct coro *coro; 2451 struct coro *coro;
1903 for (coro = coro_first; coro; coro = coro->next) 2452 for (coro = coro_first; coro; coro = coro->next)
1904 if (coro->hv) 2453 if (coro->hv)
… …
1963 RETVAL = boolSV (coro->flags & ix); 2512 RETVAL = boolSV (coro->flags & ix);
1964 OUTPUT: 2513 OUTPUT:
1965 RETVAL 2514 RETVAL
1966 2515
1967void 2516void
2517throw (Coro::State self, SV *throw = &PL_sv_undef)
2518 PROTOTYPE: $;$
2519 CODE:
2520{
2521 struct coro *current = SvSTATE_current;
2522 SV **throwp = self == current ? &coro_throw : &self->throw;
2523 SvREFCNT_dec (*throwp);
2524 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2525}
2526
2527void
1968api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2528api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2529 PROTOTYPE: $;$
2530 C_ARGS: aTHX_ coro, flags
1969 2531
1970SV * 2532SV *
1971has_cctx (Coro::State coro) 2533has_cctx (Coro::State coro)
1972 PROTOTYPE: $ 2534 PROTOTYPE: $
1973 CODE: 2535 CODE:
… …
1981 CODE: 2543 CODE:
1982 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2544 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1983 OUTPUT: 2545 OUTPUT:
1984 RETVAL 2546 RETVAL
1985 2547
1986IV 2548UV
1987rss (Coro::State coro) 2549rss (Coro::State coro)
1988 PROTOTYPE: $ 2550 PROTOTYPE: $
1989 ALIAS: 2551 ALIAS:
1990 usecount = 1 2552 usecount = 1
1991 CODE: 2553 CODE:
… …
1997 OUTPUT: 2559 OUTPUT:
1998 RETVAL 2560 RETVAL
1999 2561
2000void 2562void
2001force_cctx () 2563force_cctx ()
2564 PROTOTYPE:
2002 CODE: 2565 CODE:
2003 struct coro *coro = SvSTATE (coro_current);
2004 coro->cctx->idle_sp = 0; 2566 SvSTATE_current->cctx->idle_sp = 0;
2005
2006void
2007throw (Coro::State self, SV *throw = &PL_sv_undef)
2008 PROTOTYPE: $;$
2009 CODE:
2010 SvREFCNT_dec (self->throw);
2011 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2012 2567
2013void 2568void
2014swap_defsv (Coro::State self) 2569swap_defsv (Coro::State self)
2015 PROTOTYPE: $ 2570 PROTOTYPE: $
2016 ALIAS: 2571 ALIAS:
2017 swap_defav = 1 2572 swap_defav = 1
2018 CODE: 2573 CODE:
2019 if (!self->slot) 2574 if (!self->slot)
2020 croak ("cannot swap state with coroutine that has no saved state"); 2575 croak ("cannot swap state with coroutine that has no saved state,");
2021 else 2576 else
2022 { 2577 {
2023 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2578 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2024 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2579 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2025 2580
2026 SV *tmp = *src; *src = *dst; *dst = tmp; 2581 SV *tmp = *src; *src = *dst; *dst = tmp;
2027 } 2582 }
2583
2028 2584
2029MODULE = Coro::State PACKAGE = Coro 2585MODULE = Coro::State PACKAGE = Coro
2030 2586
2031BOOT: 2587BOOT:
2032{ 2588{
… …
2050 2606
2051 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2607 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2052 coro_ready[i] = newAV (); 2608 coro_ready[i] = newAV ();
2053 2609
2054 { 2610 {
2055 SV *sv = perl_get_sv ("Coro::API", TRUE); 2611 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2056 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2057 2612
2058 coroapi.schedule = api_schedule; 2613 coroapi.schedule = api_schedule;
2059 coroapi.cede = api_cede; 2614 coroapi.cede = api_cede;
2060 coroapi.cede_notself = api_cede_notself; 2615 coroapi.cede_notself = api_cede_notself;
2061 coroapi.ready = api_ready; 2616 coroapi.ready = api_ready;
2062 coroapi.is_ready = api_is_ready; 2617 coroapi.is_ready = api_is_ready;
2063 coroapi.nready = &coro_nready; 2618 coroapi.nready = coro_nready;
2064 coroapi.current = coro_current; 2619 coroapi.current = coro_current;
2065 2620
2066 GCoroAPI = &coroapi; 2621 GCoroAPI = &coroapi;
2067 sv_setiv (sv, (IV)&coroapi); 2622 sv_setiv (sv, (IV)&coroapi);
2068 SvREADONLY_on (sv); 2623 SvREADONLY_on (sv);
2069 } 2624 }
2070} 2625}
2626
2627void
2628schedule (...)
2629 CODE:
2630 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2631
2632void
2633cede (...)
2634 CODE:
2635 CORO_EXECUTE_SLF_XS (slf_init_cede);
2636
2637void
2638cede_notself (...)
2639 CODE:
2640 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2071 2641
2072void 2642void
2073_set_current (SV *current) 2643_set_current (SV *current)
2074 PROTOTYPE: $ 2644 PROTOTYPE: $
2075 CODE: 2645 CODE:
… …
2078 2648
2079void 2649void
2080_set_readyhook (SV *hook) 2650_set_readyhook (SV *hook)
2081 PROTOTYPE: $ 2651 PROTOTYPE: $
2082 CODE: 2652 CODE:
2083 LOCK;
2084 SvREFCNT_dec (coro_readyhook); 2653 SvREFCNT_dec (coro_readyhook);
2085 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2654 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2086 UNLOCK;
2087 2655
2088int 2656int
2089prio (Coro::State coro, int newprio = 0) 2657prio (Coro::State coro, int newprio = 0)
2658 PROTOTYPE: $;$
2090 ALIAS: 2659 ALIAS:
2091 nice = 1 2660 nice = 1
2092 CODE: 2661 CODE:
2093{ 2662{
2094 RETVAL = coro->prio; 2663 RETVAL = coro->prio;
… …
2109 2678
2110SV * 2679SV *
2111ready (SV *self) 2680ready (SV *self)
2112 PROTOTYPE: $ 2681 PROTOTYPE: $
2113 CODE: 2682 CODE:
2114 RETVAL = boolSV (api_ready (self)); 2683 RETVAL = boolSV (api_ready (aTHX_ self));
2115 OUTPUT: 2684 OUTPUT:
2116 RETVAL 2685 RETVAL
2117 2686
2118int 2687int
2119nready (...) 2688nready (...)
… …
2126# for async_pool speedup 2695# for async_pool speedup
2127void 2696void
2128_pool_1 (SV *cb) 2697_pool_1 (SV *cb)
2129 CODE: 2698 CODE:
2130{ 2699{
2131 struct coro *coro = SvSTATE (coro_current);
2132 HV *hv = (HV *)SvRV (coro_current); 2700 HV *hv = (HV *)SvRV (coro_current);
2701 struct coro *coro = SvSTATE_hv ((SV *)hv);
2133 AV *defav = GvAV (PL_defgv); 2702 AV *defav = GvAV (PL_defgv);
2134 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2703 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2135 AV *invoke_av; 2704 AV *invoke_av;
2136 int i, len; 2705 int i, len;
2137 2706
… …
2158 { 2727 {
2159 av_fill (defav, len - 1); 2728 av_fill (defav, len - 1);
2160 for (i = 0; i < len; ++i) 2729 for (i = 0; i < len; ++i)
2161 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 2730 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2162 } 2731 }
2163
2164 SvREFCNT_dec (invoke);
2165} 2732}
2166 2733
2167void 2734void
2168_pool_2 (SV *cb) 2735_pool_2 (SV *cb)
2169 CODE: 2736 CODE:
2170{ 2737{
2171 struct coro *coro = SvSTATE (coro_current); 2738 HV *hv = (HV *)SvRV (coro_current);
2739 struct coro *coro = SvSTATE_hv ((SV *)hv);
2172 2740
2173 sv_setsv (cb, &PL_sv_undef); 2741 sv_setsv (cb, &PL_sv_undef);
2174 2742
2175 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2743 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2176 coro->saved_deffh = 0; 2744 coro->saved_deffh = 0;
2177 2745
2178 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2746 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2179 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2747 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2180 { 2748 {
2181 SV *old = PL_diehook; 2749 SV *old = PL_diehook;
2182 PL_diehook = 0; 2750 PL_diehook = 0;
2183 SvREFCNT_dec (old); 2751 SvREFCNT_dec (old);
2184 croak ("\3async_pool terminate\2\n"); 2752 croak ("\3async_pool terminate\2\n");
2185 } 2753 }
2186 2754
2187 av_clear (GvAV (PL_defgv)); 2755 av_clear (GvAV (PL_defgv));
2188 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2756 hv_store (hv, "desc", sizeof ("desc") - 1,
2189 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2757 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2190 2758
2191 coro->prio = 0; 2759 coro->prio = 0;
2192 2760
2193 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2761 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2194 api_trace (coro_current, 0); 2762 api_trace (aTHX_ coro_current, 0);
2195 2763
2196 av_push (av_async_pool, newSVsv (coro_current)); 2764 av_push (av_async_pool, newSVsv (coro_current));
2197} 2765}
2198 2766
2199#if 0
2200 2767
2201void 2768MODULE = Coro::State PACKAGE = PerlIO::cede
2202_generator_call (...) 2769
2203 PROTOTYPE: @ 2770BOOT:
2204 PPCODE: 2771 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2205 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr); 2772
2206 xxxx 2773
2207 abort (); 2774MODULE = Coro::State PACKAGE = Coro::Semaphore
2208 2775
2209SV * 2776SV *
2210gensub (SV *sub, ...) 2777new (SV *klass, SV *count_ = 0)
2211 PROTOTYPE: &;@ 2778 CODE:
2212 CODE:
2213{ 2779{
2214 struct coro *coro; 2780 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2215 MAGIC *mg; 2781 AV *av = newAV ();
2216 CV *xcv; 2782 SV **ary;
2217 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2218 int i;
2219 2783
2220 CvGV (ncv) = CvGV (cv); 2784 /* unfortunately, building manually saves memory */
2221 CvFILE (ncv) = CvFILE (cv); 2785 Newx (ary, 2, SV *);
2786 AvALLOC (av) = ary;
2787 AvARRAY (av) = ary;
2788 AvMAX (av) = 1;
2789 AvFILLp (av) = 0;
2790 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2222 2791
2223 Newz (0, coro, 1, struct coro); 2792 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2224 coro->args = newAV ();
2225 coro->flags = CF_NEW;
2226
2227 av_extend (coro->args, items - 1);
2228 for (i = 1; i < items; i++)
2229 av_push (coro->args, newSVsv (ST (i)));
2230
2231 CvISXSUB_on (ncv);
2232 CvXSUBANY (ncv).any_ptr = (void *)coro;
2233
2234 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2235
2236 CvXSUB (ncv) = CvXSUB (xcv);
2237 CvANON_on (ncv);
2238
2239 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2240 RETVAL = newRV_noinc ((SV *)ncv);
2241} 2793}
2242 OUTPUT: 2794 OUTPUT:
2243 RETVAL 2795 RETVAL
2244 2796
2245#endif 2797SV *
2246 2798count (SV *self)
2247 2799 CODE:
2248MODULE = Coro::State PACKAGE = Coro::AIO 2800 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2801 OUTPUT:
2802 RETVAL
2249 2803
2250void 2804void
2251_get_state (SV *self) 2805up (SV *self, int adjust = 1)
2252 PPCODE: 2806 ALIAS:
2253{ 2807 adjust = 1
2254 AV *defav = GvAV (PL_defgv); 2808 CODE:
2255 AV *av = newAV (); 2809 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2256 int i;
2257 SV *data_sv = newSV (sizeof (struct io_state));
2258 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2259 SvCUR_set (data_sv, sizeof (struct io_state));
2260 SvPOK_only (data_sv);
2261
2262 data->errorno = errno;
2263 data->laststype = PL_laststype;
2264 data->laststatval = PL_laststatval;
2265 data->statcache = PL_statcache;
2266
2267 av_extend (av, AvFILLp (defav) + 1 + 1);
2268
2269 for (i = 0; i <= AvFILLp (defav); ++i)
2270 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2271
2272 av_push (av, data_sv);
2273
2274 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2275
2276 api_ready (self);
2277}
2278 2810
2279void 2811void
2280_set_state (SV *state) 2812down (SV *self)
2281 PROTOTYPE: $ 2813 CODE:
2282 PPCODE: 2814 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2815
2816void
2817try (SV *self)
2818 PPCODE:
2283{ 2819{
2284 AV *av = (AV *)SvRV (state); 2820 AV *av = (AV *)SvRV (self);
2285 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 2821 SV *count_sv = AvARRAY (av)[0];
2822 IV count = SvIVX (count_sv);
2823
2824 if (count > 0)
2825 {
2826 --count;
2827 SvIVX (count_sv) = count;
2828 XSRETURN_YES;
2829 }
2830 else
2831 XSRETURN_NO;
2832}
2833
2834void
2835waiters (SV *self)
2836 CODE:
2837{
2838 AV *av = (AV *)SvRV (self);
2839
2840 if (GIMME_V == G_SCALAR)
2841 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2842 else
2843 {
2286 int i; 2844 int i;
2287
2288 errno = data->errorno;
2289 PL_laststype = data->laststype;
2290 PL_laststatval = data->laststatval;
2291 PL_statcache = data->statcache;
2292
2293 EXTEND (SP, AvFILLp (av)); 2845 EXTEND (SP, AvFILLp (av) + 1 - 1);
2294 for (i = 0; i < AvFILLp (av); ++i) 2846 for (i = 1; i <= AvFILLp (av); ++i)
2295 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 2847 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2848 }
2296} 2849}
2297 2850
2298 2851
2299MODULE = Coro::State PACKAGE = Coro::AnyEvent 2852MODULE = Coro::State PACKAGE = Coro::AnyEvent
2300 2853
2301BOOT: 2854BOOT:
2302 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2855 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2303 2856
2304SV * 2857void
2305_schedule (...) 2858_schedule (...)
2306 PROTOTYPE: @
2307 CODE: 2859 CODE:
2308{ 2860{
2309 static int incede; 2861 static int incede;
2310 2862
2311 api_cede_notself (); 2863 api_cede_notself (aTHX);
2312 2864
2313 ++incede; 2865 ++incede;
2314 while (coro_nready >= incede && api_cede ()) 2866 while (coro_nready >= incede && api_cede (aTHX))
2315 ; 2867 ;
2316 2868
2317 sv_setsv (sv_activity, &PL_sv_undef); 2869 sv_setsv (sv_activity, &PL_sv_undef);
2318 if (coro_nready >= incede) 2870 if (coro_nready >= incede)
2319 { 2871 {
2320 PUSHMARK (SP); 2872 PUSHMARK (SP);
2321 PUTBACK; 2873 PUTBACK;
2322 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 2874 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2323 SPAGAIN;
2324 } 2875 }
2325 2876
2326 --incede; 2877 --incede;
2327} 2878}
2328 2879
2329 2880
2330MODULE = Coro::State PACKAGE = PerlIO::cede 2881MODULE = Coro::State PACKAGE = Coro::AIO
2331 2882
2332BOOT: 2883void
2333 PerlIO_define_layer (aTHX_ &PerlIO_cede); 2884_register (char *target, char *proto, SV *req)
2885 CODE:
2886{
2887 HV *st;
2888 GV *gvp;
2889 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2890 /* newXSproto doesn't return the CV on 5.8 */
2891 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2892 sv_setpv ((SV *)slf_cv, proto);
2893 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2894}
2895

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