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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 1.284 by root, Mon Nov 17 01:05:47 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
94/* 5.11 */
95#ifndef CxHASARGS
96# define CxHASARGS(cx) (cx)->blk_sub.hasargs
97#endif
98
99/* 5.8.7 */ 101/* 5.8.7 */
100#ifndef SvRV_set 102#ifndef SvRV_set
101# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
102#endif 104#endif
103 105
… …
114# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
115#endif 117#endif
116 118
117/* 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
118 * portable way as possible. */ 120 * portable way as possible. */
119#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
120#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
121 126
122#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
123 128
124#if __GNUC__ >= 3 129#if __GNUC__ >= 3
125# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
126# define BARRIER __asm__ __volatile__ ("" : : : "memory")
127# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
128#else 133#else
129# define attribute(x) 134# define attribute(x)
130# define BARRIER
131# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
132#endif 137#endif
133 138
134#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
135#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
136 141
137#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
138 143
139#include "CoroAPI.h" 144#include "CoroAPI.h"
140 145
141#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
142static perl_mutex coro_mutex; 147# if CORO_PTHREAD
143# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
144# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# endif
145#else
146# define LOCK (void)0
147# define UNLOCK (void)0
148#endif 150#endif
149 151
150/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
151struct io_state 153struct io_state
152{ 154{
153 AV *res; 155 AV *res;
154 int errorno; 156 int errorno;
155 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
156 int laststatval; 158 int laststatval;
157 Stat_t statcache; 159 Stat_t statcache;
158}; 160};
159 161
160static double (*nvtime)(); /* so why doesn't it take void? */ 162static double (*nvtime)(); /* so why doesn't it take void? */
161 163
164static U32 cctx_gen;
162static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
163static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
164static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
165static JMPENV *main_top_env; 168static JMPENV *main_top_env;
166static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
167static volatile SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
168 171
169static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
170static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
171static SV *rv_diehook; 174static SV *rv_diehook;
172static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
191 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
192 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
193}; 196};
194 197
195/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
196typedef struct coro_cctx { 199typedef struct coro_cctx
200{
197 struct coro_cctx *next; 201 struct coro_cctx *next;
198 202
199 /* the stack */ 203 /* the stack */
200 void *sptr; 204 void *sptr;
201 size_t ssize; 205 size_t ssize;
… …
204 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 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 */ 209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
206 JMPENV *top_env; 210 JMPENV *top_env;
207 coro_context cctx; 211 coro_context cctx;
208 212
213 U32 gen;
209#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
210 int valgrind_id; 215 int valgrind_id;
211#endif 216#endif
212 unsigned char flags; 217 unsigned char flags;
213} coro_cctx; 218} coro_cctx;
… …
218 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
219 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
220}; 225};
221 226
222/* 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 */
223typedef struct { 228typedef struct
229{
224 SV *defsv; 230 SV *defsv;
225 AV *defav; 231 AV *defav;
226 SV *errsv; 232 SV *errsv;
227 SV *irsgv; 233 SV *irsgv;
228#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
232 238
233#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))
234 240
235/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
236struct coro { 242struct coro {
237 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
238 coro_cctx *cctx; 244 coro_cctx *cctx;
239 245
240 /* process data */ 246 /* process data */
247 struct CoroSLF slf_frame; /* saved slf frame */
241 AV *mainstack; 248 AV *mainstack;
242 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
243 250
244 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
245 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
246 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
247 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);
248 256
249 /* statistics */ 257 /* statistics */
250 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
251 259
252 /* coro process data */ 260 /* coro process data */
… …
260 struct coro *next, *prev; 268 struct coro *next, *prev;
261}; 269};
262 270
263typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
264typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273
274static struct CoroSLF slf_frame; /* the current slf frame */
265 275
266/** Coro ********************************************************************/ 276/** Coro ********************************************************************/
267 277
268#define PRIO_MAX 3 278#define PRIO_MAX 3
269#define PRIO_HIGH 1 279#define PRIO_HIGH 1
… …
273#define PRIO_MIN -4 283#define PRIO_MIN -4
274 284
275/* for Coro.pm */ 285/* for Coro.pm */
276static SV *coro_current; 286static SV *coro_current;
277static SV *coro_readyhook; 287static SV *coro_readyhook;
278static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
279static int coro_nready;
280static struct coro *coro_first; 289static struct coro *coro_first;
290#define coro_nready coroapi.nready
281 291
282/** lowlevel stuff **********************************************************/ 292/** lowlevel stuff **********************************************************/
283 293
284static SV * 294static SV *
285coro_get_sv (pTHX_ const char *name, int create) 295coro_get_sv (pTHX_ const char *name, int create)
… …
378static MGVTBL coro_cv_vtbl = { 388static MGVTBL coro_cv_vtbl = {
379 0, 0, 0, 0, 389 0, 0, 0, 0,
380 coro_cv_free 390 coro_cv_free
381}; 391};
382 392
383#define CORO_MAGIC(sv,type) \ 393#define CORO_MAGIC(sv, type) \
384 SvMAGIC (sv) \ 394 expect_true (SvMAGIC (sv)) \
385 ? SvMAGIC (sv)->mg_type == type \ 395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
386 ? SvMAGIC (sv) \ 396 ? SvMAGIC (sv) \
387 : mg_find (sv, type) \ 397 : mg_find (sv, type) \
388 : 0 398 : 0
389 399
390#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
391#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
392 402
393static struct coro * 403INLINE struct coro *
394SvSTATE_ (pTHX_ SV *coro) 404SvSTATE_ (pTHX_ SV *coro)
395{ 405{
396 HV *stash; 406 HV *stash;
397 MAGIC *mg; 407 MAGIC *mg;
398 408
… …
413 mg = CORO_MAGIC_state (coro); 423 mg = CORO_MAGIC_state (coro);
414 return (struct coro *)mg->mg_ptr; 424 return (struct coro *)mg->mg_ptr;
415} 425}
416 426
417#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
418 441
419/* the next two functions merely cache the padlists */ 442/* the next two functions merely cache the padlists */
420static void 443static void
421get_padlist (pTHX_ CV *cv) 444get_padlist (pTHX_ CV *cv)
422{ 445{
… …
489 CvPADLIST (cv) = (AV *)POPs; 512 CvPADLIST (cv) = (AV *)POPs;
490 } 513 }
491 514
492 PUTBACK; 515 PUTBACK;
493 } 516 }
517
518 slf_frame = c->slf_frame;
494} 519}
495 520
496static void 521static void
497save_perl (pTHX_ Coro__State c) 522save_perl (pTHX_ Coro__State c)
498{ 523{
524 c->slf_frame = slf_frame;
525
499 { 526 {
500 dSP; 527 dSP;
501 I32 cxix = cxstack_ix; 528 I32 cxix = cxstack_ix;
502 PERL_CONTEXT *ccstk = cxstack; 529 PERL_CONTEXT *ccstk = cxstack;
503 PERL_SI *top_si = PL_curstackinfo; 530 PERL_SI *top_si = PL_curstackinfo;
… …
570 #undef VAR 597 #undef VAR
571 } 598 }
572} 599}
573 600
574/* 601/*
575 * allocate various perl stacks. This is an exact copy 602 * allocate various perl stacks. This is almost an exact copy
576 * of perl.c:init_stacks, except that it uses less memory 603 * of perl.c:init_stacks, except that it uses less memory
577 * on the (sometimes correct) assumption that coroutines do 604 * on the (sometimes correct) assumption that coroutines do
578 * not usually need a lot of stackspace. 605 * not usually need a lot of stackspace.
579 */ 606 */
580#if CORO_PREFER_PERL_FUNCTIONS 607#if CORO_PREFER_PERL_FUNCTIONS
… …
623 650
624/* 651/*
625 * destroy the stacks, the callchain etc... 652 * destroy the stacks, the callchain etc...
626 */ 653 */
627static void 654static void
628coro_destroy_stacks (pTHX) 655coro_destruct_stacks (pTHX)
629{ 656{
630 while (PL_curstackinfo->si_next) 657 while (PL_curstackinfo->si_next)
631 PL_curstackinfo = PL_curstackinfo->si_next; 658 PL_curstackinfo = PL_curstackinfo->si_next;
632 659
633 while (PL_curstackinfo) 660 while (PL_curstackinfo)
… …
782 809
783 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
784} 811}
785 812
786static void 813static void
814prepare_nop (pTHX_ struct coro_transfer_args *ta)
815{
816 /* kind of mega-hacky, but works */
817 ta->next = ta->prev = (struct coro *)ta;
818}
819
820static int
821slf_check_nop (pTHX_ struct CoroSLF *frame)
822{
823 return 0;
824}
825
826static void
787coro_setup (pTHX_ struct coro *coro) 827coro_setup (pTHX_ struct coro *coro)
788{ 828{
789 /* 829 /*
790 * emulate part of the perl startup here. 830 * emulate part of the perl startup here.
791 */ 831 */
… …
815 PL_rs = newSVsv (GvSV (irsgv)); 855 PL_rs = newSVsv (GvSV (irsgv));
816 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
817 857
818 { 858 {
819 dSP; 859 dSP;
820 LOGOP myop; 860 UNOP myop;
821 861
822 Zero (&myop, 1, LOGOP); 862 Zero (&myop, 1, UNOP);
823 myop.op_next = Nullop; 863 myop.op_next = Nullop;
824 myop.op_flags = OPf_WANT_VOID; 864 myop.op_flags = OPf_WANT_VOID;
825 865
826 PUSHMARK (SP); 866 PUSHMARK (SP);
827 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
830 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
831 SPAGAIN; 871 SPAGAIN;
832 } 872 }
833 873
834 /* this newly created coroutine might be run on an existing cctx which most 874 /* this newly created coroutine might be run on an existing cctx which most
835 * likely was suspended in set_stacklevel, called from entersub. 875 * 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 */ 876 */
839 ENTER; 877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
840} 879}
841 880
842static void 881static void
843coro_destroy (pTHX_ struct coro *coro) 882coro_destruct (pTHX_ struct coro *coro)
844{ 883{
845 if (!IN_DESTRUCT) 884 if (!IN_DESTRUCT)
846 { 885 {
847 /* restore all saved variables and stuff */ 886 /* restore all saved variables and stuff */
848 LEAVE_SCOPE (0); 887 LEAVE_SCOPE (0);
… …
870 SvREFCNT_dec (PL_warnhook); 909 SvREFCNT_dec (PL_warnhook);
871 910
872 SvREFCNT_dec (coro->saved_deffh); 911 SvREFCNT_dec (coro->saved_deffh);
873 SvREFCNT_dec (coro->throw); 912 SvREFCNT_dec (coro->throw);
874 913
875 coro_destroy_stacks (aTHX); 914 coro_destruct_stacks (aTHX);
876} 915}
877 916
878static void 917INLINE void
879free_coro_mortal (pTHX) 918free_coro_mortal (pTHX)
880{ 919{
881 if (expect_true (coro_mortal)) 920 if (expect_true (coro_mortal))
882 { 921 {
883 SvREFCNT_dec (coro_mortal); 922 SvREFCNT_dec (coro_mortal);
… …
888static int 927static int
889runops_trace (pTHX) 928runops_trace (pTHX)
890{ 929{
891 COP *oldcop = 0; 930 COP *oldcop = 0;
892 int oldcxix = -2; 931 int oldcxix = -2;
893 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
894 coro_cctx *cctx = coro->cctx; 933 coro_cctx *cctx = coro->cctx;
895 934
896 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
897 { 936 {
898 PERL_ASYNC_CHECK (); 937 PERL_ASYNC_CHECK ();
… …
1007 1046
1008 TAINT_NOT; 1047 TAINT_NOT;
1009 return 0; 1048 return 0;
1010} 1049}
1011 1050
1051static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1053{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0;
1056}
1057
1012/* inject a fake call to Coro::State::_cctx_init into the execution */ 1058/* inject a fake call to Coro::State::_cctx_init into the execution */
1013/* _cctx_init should be careful, as it could be called at almost any time */ 1059/* _cctx_init should be careful, as it could be called at almost any time */
1014/* during execution of a perl program */ 1060/* during execution of a perl program */
1061/* also initialises PL_top_env */
1015static void NOINLINE 1062static void NOINLINE
1016cctx_prepare (pTHX_ coro_cctx *cctx) 1063cctx_prepare (pTHX_ coro_cctx *cctx)
1017{ 1064{
1018 dSP; 1065 dSP;
1019 LOGOP myop; 1066 UNOP myop;
1020 1067
1021 PL_top_env = &PL_start_env; 1068 PL_top_env = &PL_start_env;
1022 1069
1023 if (cctx->flags & CC_TRACE) 1070 if (cctx->flags & CC_TRACE)
1024 PL_runops = runops_trace; 1071 PL_runops = runops_trace;
1025 1072
1026 Zero (&myop, 1, LOGOP); 1073 Zero (&myop, 1, UNOP);
1027 myop.op_next = PL_op; 1074 myop.op_next = PL_op;
1028 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
1029 1076
1030 PUSHMARK (SP); 1077 PUSHMARK (SP);
1031 EXTEND (SP, 2); 1078 EXTEND (SP, 2);
1032 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1079 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
1033 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
1034 PUTBACK; 1081 PUTBACK;
1035 PL_op = (OP *)&myop; 1082 PL_op = (OP *)&myop;
1036 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1037 SPAGAIN; 1084 SPAGAIN;
1038} 1085}
1039 1086
1087/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void
1089transfer_tail (pTHX)
1090{
1091 free_coro_mortal (aTHX);
1092}
1093
1040/* 1094/*
1041 * this is a _very_ stripped down perl interpreter ;) 1095 * this is a _very_ stripped down perl interpreter ;)
1042 */ 1096 */
1043static void 1097static void
1044cctx_run (void *arg) 1098cctx_run (void *arg)
1045{ 1099{
1100#ifdef USE_ITHREADS
1101# if CORO_PTHREAD
1102 PERL_SET_CONTEXT (coro_thx);
1103# endif
1104#endif
1105 {
1046 dTHX; 1106 dTHX;
1047 1107
1048 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1108 /* normally we would need to skip the entersub here */
1049 UNLOCK; 1109 /* 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; 1110 /* PL_nop = PL_nop->op_next */
1053 1111
1054 /* inject a fake subroutine call to cctx_init */ 1112 /* inject a fake subroutine call to cctx_init */
1055 cctx_prepare (aTHX_ (coro_cctx *)arg); 1113 cctx_prepare (aTHX_ (coro_cctx *)arg);
1056 1114
1115 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX);
1117
1057 /* somebody or something will hit me for both perl_run and PL_restartop */ 1118 /* somebody or something will hit me for both perl_run and PL_restartop */
1058 PL_restartop = PL_op; 1119 PL_restartop = PL_op;
1059 perl_run (PL_curinterp); 1120 perl_run (PL_curinterp);
1060 1121
1061 /* 1122 /*
1062 * If perl-run returns we assume exit() was being called or the coro 1123 * 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) 1124 * 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 1125 * 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" 1126 * bootstrap-time "top" top_env, as we cannot restore the "main"
1066 * coroutine as Coro has no such concept 1127 * coroutine as Coro has no such concept
1067 */ 1128 */
1068 PL_top_env = main_top_env; 1129 PL_top_env = main_top_env;
1069 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1130 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1131 }
1070} 1132}
1071 1133
1072static coro_cctx * 1134static coro_cctx *
1073cctx_new () 1135cctx_new ()
1074{ 1136{
1075 coro_cctx *cctx; 1137 coro_cctx *cctx;
1138
1139 ++cctx_count;
1140 New (0, cctx, 1, coro_cctx);
1141
1142 cctx->gen = cctx_gen;
1143 cctx->flags = 0;
1144 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1145
1146 return cctx;
1147}
1148
1149/* create a new cctx only suitable as source */
1150static coro_cctx *
1151cctx_new_empty ()
1152{
1153 coro_cctx *cctx = cctx_new ();
1154
1155 cctx->sptr = 0;
1156 coro_create (&cctx->cctx, 0, 0, 0, 0);
1157
1158 return cctx;
1159}
1160
1161/* create a new cctx suitable as destination/running a perl interpreter */
1162static coro_cctx *
1163cctx_new_run ()
1164{
1165 coro_cctx *cctx = cctx_new ();
1076 void *stack_start; 1166 void *stack_start;
1077 size_t stack_size; 1167 size_t stack_size;
1078 1168
1079 ++cctx_count;
1080
1081 Newz (0, cctx, 1, coro_cctx);
1082
1083#if HAVE_MMAP 1169#if HAVE_MMAP
1084 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1170 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1085 /* mmap supposedly does allocate-on-write for us */ 1171 /* 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); 1172 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1087 1173
1088 if (cctx->sptr != (void *)-1) 1174 if (cctx->sptr != (void *)-1)
1089 { 1175 {
1090# if CORO_STACKGUARD 1176 #if CORO_STACKGUARD
1091 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1177 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1092# endif 1178 #endif
1093 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1179 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1094 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1180 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1095 cctx->flags |= CC_MAPPED; 1181 cctx->flags |= CC_MAPPED;
1096 } 1182 }
1097 else 1183 else
1098#endif 1184#endif
1099 { 1185 {
1100 cctx->ssize = coro_stacksize * (long)sizeof (long); 1186 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1101 New (0, cctx->sptr, coro_stacksize, long); 1187 New (0, cctx->sptr, cctx_stacksize, long);
1102 1188
1103 if (!cctx->sptr) 1189 if (!cctx->sptr)
1104 { 1190 {
1105 perror ("FATAL: unable to allocate stack for coroutine"); 1191 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1106 _exit (EXIT_FAILURE); 1192 _exit (EXIT_FAILURE);
1107 } 1193 }
1108 1194
1109 stack_start = cctx->sptr; 1195 stack_start = cctx->sptr;
1110 stack_size = cctx->ssize; 1196 stack_size = cctx->ssize;
1111 } 1197 }
1112 1198
1113 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1199 #if CORO_USE_VALGRIND
1200 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1201 #endif
1202
1114 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1203 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1115 1204
1116 return cctx; 1205 return cctx;
1117} 1206}
1118 1207
… …
1121{ 1210{
1122 if (!cctx) 1211 if (!cctx)
1123 return; 1212 return;
1124 1213
1125 --cctx_count; 1214 --cctx_count;
1215 coro_destroy (&cctx->cctx);
1126 1216
1217 /* coro_transfer creates new, empty cctx's */
1218 if (cctx->sptr)
1219 {
1127#if CORO_USE_VALGRIND 1220 #if CORO_USE_VALGRIND
1128 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1221 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1129#endif 1222 #endif
1130 1223
1131#if HAVE_MMAP 1224#if HAVE_MMAP
1132 if (cctx->flags & CC_MAPPED) 1225 if (cctx->flags & CC_MAPPED)
1133 munmap (cctx->sptr, cctx->ssize); 1226 munmap (cctx->sptr, cctx->ssize);
1134 else 1227 else
1135#endif 1228#endif
1136 Safefree (cctx->sptr); 1229 Safefree (cctx->sptr);
1230 }
1137 1231
1138 Safefree (cctx); 1232 Safefree (cctx);
1139} 1233}
1140 1234
1141/* wether this cctx should be destructed */ 1235/* wether this cctx should be destructed */
1142#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1236#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1143 1237
1144static coro_cctx * 1238static coro_cctx *
1145cctx_get (pTHX) 1239cctx_get (pTHX)
1146{ 1240{
1147 while (expect_true (cctx_first)) 1241 while (expect_true (cctx_first))
… …
1154 return cctx; 1248 return cctx;
1155 1249
1156 cctx_destroy (cctx); 1250 cctx_destroy (cctx);
1157 } 1251 }
1158 1252
1159 return cctx_new (); 1253 return cctx_new_run ();
1160} 1254}
1161 1255
1162static void 1256static void
1163cctx_put (coro_cctx *cctx) 1257cctx_put (coro_cctx *cctx)
1164{ 1258{
1259 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1260
1165 /* free another cctx if overlimit */ 1261 /* free another cctx if overlimit */
1166 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1262 if (expect_false (cctx_idle >= cctx_max_idle))
1167 { 1263 {
1168 coro_cctx *first = cctx_first; 1264 coro_cctx *first = cctx_first;
1169 cctx_first = first->next; 1265 cctx_first = first->next;
1170 --cctx_idle; 1266 --cctx_idle;
1171 1267
… …
1183transfer_check (pTHX_ struct coro *prev, struct coro *next) 1279transfer_check (pTHX_ struct coro *prev, struct coro *next)
1184{ 1280{
1185 if (expect_true (prev != next)) 1281 if (expect_true (prev != next))
1186 { 1282 {
1187 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1283 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"); 1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1189 1285
1190 if (expect_false (next->flags & CF_RUNNING)) 1286 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"); 1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1192 1288
1193 if (expect_false (next->flags & CF_DESTROYED)) 1289 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"); 1290 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1195 1291
1196#if !PERL_VERSION_ATLEAST (5,10,0) 1292#if !PERL_VERSION_ATLEAST (5,10,0)
1197 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1293 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"); 1294 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1199#endif 1295#endif
1200 } 1296 }
1201} 1297}
1202 1298
1203/* always use the TRANSFER macro */ 1299/* always use the TRANSFER macro */
1204static void NOINLINE 1300static void NOINLINE
1205transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1206{ 1302{
1207 dSTACKLEVEL; 1303 dSTACKLEVEL;
1208 static volatile int has_throw;
1209 1304
1210 /* sometimes transfer is only called to set idle_sp */ 1305 /* sometimes transfer is only called to set idle_sp */
1211 if (expect_false (!next)) 1306 if (expect_false (!next))
1212 { 1307 {
1213 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1214 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1215 } 1310 }
1216 else if (expect_true (prev != next)) 1311 else if (expect_true (prev != next))
1217 { 1312 {
1218 coro_cctx *prev__cctx; 1313 coro_cctx *prev__cctx;
1219 1314
1220 if (expect_false (prev->flags & CF_NEW)) 1315 if (expect_false (prev->flags & CF_NEW))
1221 { 1316 {
1222 /* create a new empty context */ 1317 /* create a new empty/source context */
1223 Newz (0, prev->cctx, 1, coro_cctx); 1318 prev->cctx = cctx_new_empty ();
1224 prev->flags &= ~CF_NEW; 1319 prev->flags &= ~CF_NEW;
1225 prev->flags |= CF_RUNNING; 1320 prev->flags |= CF_RUNNING;
1226 } 1321 }
1227 1322
1228 prev->flags &= ~CF_RUNNING; 1323 prev->flags &= ~CF_RUNNING;
1229 next->flags |= CF_RUNNING; 1324 next->flags |= CF_RUNNING;
1230
1231 LOCK;
1232 1325
1233 /* first get rid of the old state */ 1326 /* first get rid of the old state */
1234 save_perl (aTHX_ prev); 1327 save_perl (aTHX_ prev);
1235 1328
1236 if (expect_false (next->flags & CF_NEW)) 1329 if (expect_false (next->flags & CF_NEW))
… …
1243 else 1336 else
1244 load_perl (aTHX_ next); 1337 load_perl (aTHX_ next);
1245 1338
1246 prev__cctx = prev->cctx; 1339 prev__cctx = prev->cctx;
1247 1340
1248 /* possibly "free" the cctx */ 1341 /* possibly untie and reuse the cctx */
1249 if (expect_true ( 1342 if (expect_true (
1250 prev__cctx->idle_sp == STACKLEVEL 1343 prev__cctx->idle_sp == (void *)stacklevel
1251 && !(prev__cctx->flags & CC_TRACE) 1344 && !(prev__cctx->flags & CC_TRACE)
1252 && !force_cctx 1345 && !force_cctx
1253 )) 1346 ))
1254 { 1347 {
1255 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1348 /* 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)); 1349 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1257 1350
1258 prev->cctx = 0; 1351 prev->cctx = 0;
1259 1352
1260 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1353 /* 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 */ 1354 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1268 1361
1269 ++next->usecount; 1362 ++next->usecount;
1270 1363
1271 if (expect_true (!next->cctx)) 1364 if (expect_true (!next->cctx))
1272 next->cctx = cctx_get (aTHX); 1365 next->cctx = cctx_get (aTHX);
1273
1274 has_throw = !!next->throw;
1275 1366
1276 if (expect_false (prev__cctx != next->cctx)) 1367 if (expect_false (prev__cctx != next->cctx))
1277 { 1368 {
1278 prev__cctx->top_env = PL_top_env; 1369 prev__cctx->top_env = PL_top_env;
1279 PL_top_env = next->cctx->top_env; 1370 PL_top_env = next->cctx->top_env;
1280 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1281 } 1372 }
1282 1373
1283 free_coro_mortal (aTHX); 1374 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 } 1375 }
1299} 1376}
1300
1301struct transfer_args
1302{
1303 struct coro *prev, *next;
1304};
1305 1377
1306#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1378#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) 1379#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1308 1380
1309/** high level stuff ********************************************************/ 1381/** high level stuff ********************************************************/
… …
1311static int 1383static int
1312coro_state_destroy (pTHX_ struct coro *coro) 1384coro_state_destroy (pTHX_ struct coro *coro)
1313{ 1385{
1314 if (coro->flags & CF_DESTROYED) 1386 if (coro->flags & CF_DESTROYED)
1315 return 0; 1387 return 0;
1388
1389 if (coro->on_destroy)
1390 coro->on_destroy (aTHX_ coro);
1316 1391
1317 coro->flags |= CF_DESTROYED; 1392 coro->flags |= CF_DESTROYED;
1318 1393
1319 if (coro->flags & CF_READY) 1394 if (coro->flags & CF_READY)
1320 { 1395 {
1321 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1396 /* reduce nready, as destroying a ready coro effectively unreadies it */
1322 /* alternative: look through all ready queues and remove the coro */ 1397 /* alternative: look through all ready queues and remove the coro */
1323 LOCK;
1324 --coro_nready; 1398 --coro_nready;
1325 UNLOCK;
1326 } 1399 }
1327 else 1400 else
1328 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1329 1402
1330 if (coro->mainstack && coro->mainstack != main_mainstack) 1403 if (coro->mainstack && coro->mainstack != main_mainstack)
1331 { 1404 {
1332 struct coro temp; 1405 struct coro temp;
1333 1406
1334 if (coro->flags & CF_RUNNING) 1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1335 croak ("FATAL: tried to destroy currently running coroutine");
1336 1408
1337 save_perl (aTHX_ &temp); 1409 save_perl (aTHX_ &temp);
1338 load_perl (aTHX_ coro); 1410 load_perl (aTHX_ coro);
1339 1411
1340 coro_destroy (aTHX_ coro); 1412 coro_destruct (aTHX_ coro);
1341 1413
1342 load_perl (aTHX_ &temp); 1414 load_perl (aTHX_ &temp);
1343 1415
1344 coro->slot = 0; 1416 coro->slot = 0;
1345 } 1417 }
… …
1391# define MGf_DUP 0 1463# define MGf_DUP 0
1392#endif 1464#endif
1393}; 1465};
1394 1466
1395static void 1467static void
1396prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1468prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1397{ 1469{
1398 ta->prev = SvSTATE (prev_sv); 1470 ta->prev = SvSTATE (prev_sv);
1399 ta->next = SvSTATE (next_sv); 1471 ta->next = SvSTATE (next_sv);
1400 TRANSFER_CHECK (*ta); 1472 TRANSFER_CHECK (*ta);
1401} 1473}
1402 1474
1403static void 1475static void
1404api_transfer (SV *prev_sv, SV *next_sv) 1476api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1405{ 1477{
1406 dTHX;
1407 struct transfer_args ta; 1478 struct coro_transfer_args ta;
1408 1479
1409 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1480 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1410 TRANSFER (ta, 1); 1481 TRANSFER (ta, 1);
1411} 1482}
1412 1483
1413/** Coro ********************************************************************/ 1484/** Coro ********************************************************************/
1414 1485
1415static void 1486INLINE void
1416coro_enq (pTHX_ SV *coro_sv) 1487coro_enq (pTHX_ struct coro *coro)
1417{ 1488{
1418 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1489 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1419} 1490}
1420 1491
1421static SV * 1492INLINE SV *
1422coro_deq (pTHX) 1493coro_deq (pTHX)
1423{ 1494{
1424 int prio; 1495 int prio;
1425 1496
1426 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1497 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1429 1500
1430 return 0; 1501 return 0;
1431} 1502}
1432 1503
1433static int 1504static int
1434api_ready (SV *coro_sv) 1505api_ready (pTHX_ SV *coro_sv)
1435{ 1506{
1436 dTHX;
1437 struct coro *coro; 1507 struct coro *coro;
1438 SV *sv_hook; 1508 SV *sv_hook;
1439 void (*xs_hook)(void); 1509 void (*xs_hook)(void);
1440 1510
1441 if (SvROK (coro_sv)) 1511 if (SvROK (coro_sv))
… …
1446 if (coro->flags & CF_READY) 1516 if (coro->flags & CF_READY)
1447 return 0; 1517 return 0;
1448 1518
1449 coro->flags |= CF_READY; 1519 coro->flags |= CF_READY;
1450 1520
1451 LOCK;
1452
1453 sv_hook = coro_nready ? 0 : coro_readyhook; 1521 sv_hook = coro_nready ? 0 : coro_readyhook;
1454 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1522 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1455 1523
1456 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1524 coro_enq (aTHX_ coro);
1457 ++coro_nready; 1525 ++coro_nready;
1458 1526
1459 UNLOCK;
1460
1461 if (sv_hook) 1527 if (sv_hook)
1462 { 1528 {
1463 dSP; 1529 dSP;
1464 1530
1465 ENTER; 1531 ENTER;
… …
1479 1545
1480 return 1; 1546 return 1;
1481} 1547}
1482 1548
1483static int 1549static int
1484api_is_ready (SV *coro_sv) 1550api_is_ready (pTHX_ SV *coro_sv)
1485{ 1551{
1486 dTHX;
1487 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1552 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1488} 1553}
1489 1554
1490static void 1555INLINE void
1491prepare_schedule (pTHX_ struct transfer_args *ta) 1556prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1492{ 1557{
1493 SV *prev_sv, *next_sv; 1558 SV *prev_sv, *next_sv;
1494 1559
1495 for (;;) 1560 for (;;)
1496 { 1561 {
1497 LOCK;
1498 next_sv = coro_deq (aTHX); 1562 next_sv = coro_deq (aTHX);
1499 1563
1500 /* nothing to schedule: call the idle handler */ 1564 /* nothing to schedule: call the idle handler */
1501 if (expect_false (!next_sv)) 1565 if (expect_false (!next_sv))
1502 { 1566 {
1503 dSP; 1567 dSP;
1504 UNLOCK;
1505 1568
1506 ENTER; 1569 ENTER;
1507 SAVETMPS; 1570 SAVETMPS;
1508 1571
1509 PUSHMARK (SP); 1572 PUSHMARK (SP);
… …
1514 FREETMPS; 1577 FREETMPS;
1515 LEAVE; 1578 LEAVE;
1516 continue; 1579 continue;
1517 } 1580 }
1518 1581
1519 ta->next = SvSTATE (next_sv); 1582 ta->next = SvSTATE_hv (next_sv);
1520 1583
1521 /* cannot transfer to destroyed coros, skip and look for next */ 1584 /* cannot transfer to destroyed coros, skip and look for next */
1522 if (expect_false (ta->next->flags & CF_DESTROYED)) 1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1523 { 1586 {
1524 UNLOCK;
1525 SvREFCNT_dec (next_sv); 1587 SvREFCNT_dec (next_sv);
1526 /* coro_nready is already taken care of by destroy */ 1588 /* coro_nready has already been taken care of by destroy */
1527 continue; 1589 continue;
1528 } 1590 }
1529 1591
1530 --coro_nready; 1592 --coro_nready;
1531 UNLOCK;
1532 break; 1593 break;
1533 } 1594 }
1534 1595
1535 /* free this only after the transfer */ 1596 /* free this only after the transfer */
1536 prev_sv = SvRV (coro_current); 1597 prev_sv = SvRV (coro_current);
1537 ta->prev = SvSTATE (prev_sv); 1598 ta->prev = SvSTATE_hv (prev_sv);
1538 TRANSFER_CHECK (*ta); 1599 TRANSFER_CHECK (*ta);
1539 assert (ta->next->flags & CF_READY); 1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1540 ta->next->flags &= ~CF_READY; 1601 ta->next->flags &= ~CF_READY;
1541 SvRV_set (coro_current, next_sv); 1602 SvRV_set (coro_current, next_sv);
1542 1603
1543 LOCK;
1544 free_coro_mortal (aTHX); 1604 free_coro_mortal (aTHX);
1545 coro_mortal = prev_sv; 1605 coro_mortal = prev_sv;
1546 UNLOCK;
1547} 1606}
1548 1607
1549static void 1608INLINE void
1550prepare_cede (pTHX_ struct transfer_args *ta) 1609prepare_cede (pTHX_ struct coro_transfer_args *ta)
1551{ 1610{
1552 api_ready (coro_current); 1611 api_ready (aTHX_ coro_current);
1553 prepare_schedule (aTHX_ ta); 1612 prepare_schedule (aTHX_ ta);
1554} 1613}
1555 1614
1615INLINE void
1616prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1617{
1618 SV *prev = SvRV (coro_current);
1619
1620 if (coro_nready)
1621 {
1622 prepare_schedule (aTHX_ ta);
1623 api_ready (aTHX_ prev);
1624 }
1625 else
1626 prepare_nop (aTHX_ ta);
1627}
1628
1629static void
1630api_schedule (pTHX)
1631{
1632 struct coro_transfer_args ta;
1633
1634 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1);
1636}
1637
1556static int 1638static int
1557prepare_cede_notself (pTHX_ struct transfer_args *ta) 1639api_cede (pTHX)
1558{ 1640{
1559 if (coro_nready) 1641 struct coro_transfer_args ta;
1560 { 1642
1561 SV *prev = SvRV (coro_current);
1562 prepare_schedule (aTHX_ ta); 1643 prepare_cede (aTHX_ &ta);
1563 api_ready (prev); 1644
1645 if (expect_true (ta.prev != ta.next))
1646 {
1647 TRANSFER (ta, 1);
1564 return 1; 1648 return 1;
1565 } 1649 }
1566 else 1650 else
1567 return 0; 1651 return 0;
1568} 1652}
1569 1653
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 1654static int
1581api_cede (void) 1655api_cede_notself (pTHX)
1582{ 1656{
1583 dTHX; 1657 if (coro_nready)
1658 {
1584 struct transfer_args ta; 1659 struct coro_transfer_args ta;
1585 1660
1586 prepare_cede (aTHX_ &ta); 1661 prepare_cede_notself (aTHX_ &ta);
1587
1588 if (expect_true (ta.prev != ta.next))
1589 {
1590 TRANSFER (ta, 1); 1662 TRANSFER (ta, 1);
1591 return 1; 1663 return 1;
1592 } 1664 }
1593 else 1665 else
1594 return 0; 1666 return 0;
1595} 1667}
1596 1668
1597static int 1669static 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) 1670api_trace (pTHX_ SV *coro_sv, int flags)
1614{ 1671{
1615 dTHX;
1616 struct coro *coro = SvSTATE (coro_sv); 1672 struct coro *coro = SvSTATE (coro_sv);
1617 1673
1618 if (flags & CC_TRACE) 1674 if (flags & CC_TRACE)
1619 { 1675 {
1620 if (!coro->cctx) 1676 if (!coro->cctx)
1621 coro->cctx = cctx_new (); 1677 coro->cctx = cctx_new_run ();
1622 else if (!(coro->cctx->flags & CC_TRACE)) 1678 else if (!(coro->cctx->flags & CC_TRACE))
1623 croak ("cannot enable tracing on coroutine with custom stack"); 1679 croak ("cannot enable tracing on coroutine with custom stack,");
1624 1680
1625 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1626 } 1682 }
1627 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1628 { 1684 {
… …
1633 else 1689 else
1634 coro->slot->runops = RUNOPS_DEFAULT; 1690 coro->slot->runops = RUNOPS_DEFAULT;
1635 } 1691 }
1636} 1692}
1637 1693
1638static int
1639coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1640{
1641 AV *padlist;
1642 AV *av = (AV *)mg->mg_obj;
1643
1644 abort ();
1645
1646 return 0;
1647}
1648
1649static MGVTBL coro_gensub_vtbl = {
1650 0, 0, 0, 0,
1651 coro_gensub_free
1652};
1653
1654/*****************************************************************************/ 1694/*****************************************************************************/
1655/* PerlIO::cede */ 1695/* PerlIO::cede */
1656 1696
1657typedef struct 1697typedef struct
1658{ 1698{
… …
1685 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 1725 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1686 double now = nvtime (); 1726 double now = nvtime ();
1687 1727
1688 if (now >= self->next) 1728 if (now >= self->next)
1689 { 1729 {
1690 api_cede (); 1730 api_cede (aTHX);
1691 self->next = now + self->every; 1731 self->next = now + self->every;
1692 } 1732 }
1693 1733
1694 return PerlIOBuf_flush (aTHX_ f); 1734 return PerlIOBuf_flush (aTHX_ f);
1695} 1735}
… …
1724 PerlIOBuf_get_ptr, 1764 PerlIOBuf_get_ptr,
1725 PerlIOBuf_get_cnt, 1765 PerlIOBuf_get_cnt,
1726 PerlIOBuf_set_ptrcnt, 1766 PerlIOBuf_set_ptrcnt,
1727}; 1767};
1728 1768
1769/*****************************************************************************/
1770
1771static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1772static const CV *slf_cv;
1773static SV *slf_arg0;
1774static SV *slf_arg1;
1775static SV *slf_arg2;
1776static I32 slf_ax; /* top of stack, for restore */
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP *
1782pp_restore (pTHX)
1783{
1784 SV **SP = PL_stack_base + slf_ax;
1785
1786 PUSHMARK (SP);
1787
1788 EXTEND (SP, 3);
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1792 PUSHs ((SV *)CvGV (slf_cv));
1793
1794 RETURNOP (slf_restore.op_first);
1795}
1796
1797static void
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
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 {
1928 dSP;
1929 SV **bot = PL_stack_base + checkmark;
1930 int gimme = GIMME_V;
1931
1932 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1933
1934 /* make sure we put something on the stack in scalar context */
1935 if (gimme == G_SCALAR)
1936 {
1937 if (sp == bot)
1938 XPUSHs (&PL_sv_undef);
1939
1940 SP = bot + 1;
1941 }
1942
1943 PUTBACK;
1944 }
1945
1946 {
1947 struct coro *coro = SvSTATE_current;
1948
1949 if (expect_false (coro->throw))
1950 {
1951 SV *exception = sv_2mortal (coro->throw);
1952
1953 coro->throw = 0;
1954 sv_setsv (ERRSV, exception);
1955 croak (0);
1956 }
1957 }
1958
1959 return NORMAL;
1960}
1961
1962static void
1963api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1964{
1965 SV **arg = PL_stack_base + ax;
1966 int items = PL_stack_sp - arg + 1;
1967
1968 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1969
1970 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1971 && PL_op->op_ppaddr != pp_slf)
1972 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1973
1974#if 0
1975 if (items > 3)
1976 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1977#endif
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_CUSTOM;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1992 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1993 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1994 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1995
1996 PL_op->op_ppaddr = pp_slf;
1997 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1998
1999 PL_op = (OP *)&slf_restore;
2000}
2001
2002/*****************************************************************************/
2003
2004static void
2005coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2006{
2007 SV *count_sv = AvARRAY (av)[0];
2008 IV count = SvIVX (count_sv);
2009
2010 count += adjust;
2011 SvIVX (count_sv) = count;
2012
2013 /* now wake up as many waiters as are expected to lock */
2014 while (count > 0 && AvFILLp (av) > 0)
2015 {
2016 SV *cb;
2017
2018 /* swap first two elements so we can shift a waiter */
2019 AvARRAY (av)[0] = AvARRAY (av)[1];
2020 AvARRAY (av)[1] = count_sv;
2021 cb = av_shift (av);
2022
2023 if (SvOBJECT (cb))
2024 api_ready (aTHX_ cb);
2025 else
2026 croak ("callbacks not yet supported");
2027
2028 SvREFCNT_dec (cb);
2029
2030 --count;
2031 }
2032}
2033
2034static void
2035coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2036{
2037 /* call $sem->adjust (0) to possibly wake up some other waiters */
2038 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2039}
2040
2041static int
2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2043{
2044 AV *av = (AV *)frame->data;
2045 SV *count_sv = AvARRAY (av)[0];
2046
2047 if (SvIVX (count_sv) > 0)
2048 {
2049 SvSTATE_current->on_destroy = 0;
2050 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2051 return 0;
2052 }
2053 else
2054 {
2055 int i;
2056 /* if we were woken up but can't down, we look through the whole */
2057 /* waiters list and only add us if we aren't in there already */
2058 /* this avoids some degenerate memory usage cases */
2059
2060 for (i = 1; i <= AvFILLp (av); ++i)
2061 if (AvARRAY (av)[i] == SvRV (coro_current))
2062 return 1;
2063
2064 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2065 return 1;
2066 }
2067}
2068
2069static void
2070slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2071{
2072 AV *av = (AV *)SvRV (arg [0]);
2073
2074 if (SvIVX (AvARRAY (av)[0]) > 0)
2075 {
2076 frame->data = (void *)av;
2077 frame->prepare = prepare_nop;
2078 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
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 assert (!SvSTATE_current->on_destroy);//D
2090 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2091 }
2092
2093 frame->check = slf_check_semaphore_down;
2094
2095}
2096
2097/*****************************************************************************/
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, 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/*****************************************************************************/
1729 2120
1730MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1731 2122
1732PROTOTYPES: DISABLE 2123PROTOTYPES: DISABLE
1733 2124
1734BOOT: 2125BOOT:
1735{ 2126{
1736#ifdef USE_ITHREADS 2127#ifdef USE_ITHREADS
1737 MUTEX_INIT (&coro_mutex); 2128# if CORO_PTHREAD
2129 coro_thx = PERL_GET_CONTEXT;
2130# endif
1738#endif 2131#endif
1739 BOOT_PAGESIZE; 2132 BOOT_PAGESIZE;
1740 2133
1741 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2134 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1742 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2135 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1760 main_top_env = PL_top_env; 2153 main_top_env = PL_top_env;
1761 2154
1762 while (main_top_env->je_prev) 2155 while (main_top_env->je_prev)
1763 main_top_env = main_top_env->je_prev; 2156 main_top_env = main_top_env->je_prev;
1764 2157
2158 {
2159 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2160
2161 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2162 hv_store_ent (PL_custom_op_names, slf,
2163 newSVpv ("coro_slf", 0), 0);
2164
2165 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2166 hv_store_ent (PL_custom_op_descs, slf,
2167 newSVpv ("coro schedule like function", 0), 0);
2168 }
2169
1765 coroapi.ver = CORO_API_VERSION; 2170 coroapi.ver = CORO_API_VERSION;
1766 coroapi.rev = CORO_API_REVISION; 2171 coroapi.rev = CORO_API_REVISION;
2172
1767 coroapi.transfer = api_transfer; 2173 coroapi.transfer = api_transfer;
2174
2175 coroapi.sv_state = SvSTATE_;
2176 coroapi.execute_slf = api_execute_slf;
2177 coroapi.prepare_nop = prepare_nop;
2178 coroapi.prepare_schedule = prepare_schedule;
2179 coroapi.prepare_cede = prepare_cede;
2180 coroapi.prepare_cede_notself = prepare_cede_notself;
1768 2181
1769 { 2182 {
1770 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2183 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1771 2184
1772 if (!svp) croak ("Time::HiRes is required"); 2185 if (!svp) croak ("Time::HiRes is required");
… …
1805 av_push (coro->args, newSVsv (ST (i))); 2218 av_push (coro->args, newSVsv (ST (i)));
1806} 2219}
1807 OUTPUT: 2220 OUTPUT:
1808 RETVAL 2221 RETVAL
1809 2222
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 2223void
1814_set_stacklevel (...) 2224_set_stacklevel (...)
1815 ALIAS: 2225 CODE:
1816 Coro::State::transfer = 1 2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1817 Coro::schedule = 2
1818 Coro::cede = 3
1819 Coro::cede_notself = 4
1820 CODE:
1821{
1822 struct transfer_args ta;
1823 2227
1824 PUTBACK; 2228void
1825 switch (ix) 2229transfer (...)
1826 { 2230 PROTOTYPE: $$
1827 case 0: 2231 CODE:
1828 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2232 CORO_EXECUTE_SLF_XS (slf_init_transfer);
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 2233
1862bool 2234bool
1863_destroy (SV *coro_sv) 2235_destroy (SV *coro_sv)
1864 CODE: 2236 CODE:
1865 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2237 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1872 CODE: 2244 CODE:
1873 _exit (code); 2245 _exit (code);
1874 2246
1875int 2247int
1876cctx_stacksize (int new_stacksize = 0) 2248cctx_stacksize (int new_stacksize = 0)
2249 PROTOTYPE: ;$
1877 CODE: 2250 CODE:
1878 RETVAL = coro_stacksize; 2251 RETVAL = cctx_stacksize;
1879 if (new_stacksize) 2252 if (new_stacksize)
2253 {
1880 coro_stacksize = new_stacksize; 2254 cctx_stacksize = new_stacksize;
2255 ++cctx_gen;
2256 }
1881 OUTPUT: 2257 OUTPUT:
1882 RETVAL 2258 RETVAL
1883 2259
1884int 2260int
2261cctx_max_idle (int max_idle = 0)
2262 PROTOTYPE: ;$
2263 CODE:
2264 RETVAL = cctx_max_idle;
2265 if (max_idle > 1)
2266 cctx_max_idle = max_idle;
2267 OUTPUT:
2268 RETVAL
2269
2270int
1885cctx_count () 2271cctx_count ()
2272 PROTOTYPE:
1886 CODE: 2273 CODE:
1887 RETVAL = cctx_count; 2274 RETVAL = cctx_count;
1888 OUTPUT: 2275 OUTPUT:
1889 RETVAL 2276 RETVAL
1890 2277
1891int 2278int
1892cctx_idle () 2279cctx_idle ()
2280 PROTOTYPE:
1893 CODE: 2281 CODE:
1894 RETVAL = cctx_idle; 2282 RETVAL = cctx_idle;
1895 OUTPUT: 2283 OUTPUT:
1896 RETVAL 2284 RETVAL
1897 2285
1898void 2286void
1899list () 2287list ()
2288 PROTOTYPE:
1900 PPCODE: 2289 PPCODE:
1901{ 2290{
1902 struct coro *coro; 2291 struct coro *coro;
1903 for (coro = coro_first; coro; coro = coro->next) 2292 for (coro = coro_first; coro; coro = coro->next)
1904 if (coro->hv) 2293 if (coro->hv)
… …
1963 RETVAL = boolSV (coro->flags & ix); 2352 RETVAL = boolSV (coro->flags & ix);
1964 OUTPUT: 2353 OUTPUT:
1965 RETVAL 2354 RETVAL
1966 2355
1967void 2356void
2357throw (Coro::State self, SV *throw = &PL_sv_undef)
2358 PROTOTYPE: $;$
2359 CODE:
2360 SvREFCNT_dec (self->throw);
2361 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2362
2363void
1968api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2364api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2365 PROTOTYPE: $;$
2366 C_ARGS: aTHX_ coro, flags
1969 2367
1970SV * 2368SV *
1971has_cctx (Coro::State coro) 2369has_cctx (Coro::State coro)
1972 PROTOTYPE: $ 2370 PROTOTYPE: $
1973 CODE: 2371 CODE:
… …
1981 CODE: 2379 CODE:
1982 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2380 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1983 OUTPUT: 2381 OUTPUT:
1984 RETVAL 2382 RETVAL
1985 2383
1986IV 2384UV
1987rss (Coro::State coro) 2385rss (Coro::State coro)
1988 PROTOTYPE: $ 2386 PROTOTYPE: $
1989 ALIAS: 2387 ALIAS:
1990 usecount = 1 2388 usecount = 1
1991 CODE: 2389 CODE:
… …
1997 OUTPUT: 2395 OUTPUT:
1998 RETVAL 2396 RETVAL
1999 2397
2000void 2398void
2001force_cctx () 2399force_cctx ()
2400 PROTOTYPE:
2002 CODE: 2401 CODE:
2003 struct coro *coro = SvSTATE (coro_current);
2004 coro->cctx->idle_sp = 0; 2402 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 2403
2013void 2404void
2014swap_defsv (Coro::State self) 2405swap_defsv (Coro::State self)
2015 PROTOTYPE: $ 2406 PROTOTYPE: $
2016 ALIAS: 2407 ALIAS:
2017 swap_defav = 1 2408 swap_defav = 1
2018 CODE: 2409 CODE:
2019 if (!self->slot) 2410 if (!self->slot)
2020 croak ("cannot swap state with coroutine that has no saved state"); 2411 croak ("cannot swap state with coroutine that has no saved state,");
2021 else 2412 else
2022 { 2413 {
2023 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2414 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2024 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2025 2416
… …
2050 2441
2051 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2442 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2052 coro_ready[i] = newAV (); 2443 coro_ready[i] = newAV ();
2053 2444
2054 { 2445 {
2055 SV *sv = perl_get_sv ("Coro::API", TRUE); 2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2056 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2057 2447
2058 coroapi.schedule = api_schedule; 2448 coroapi.schedule = api_schedule;
2059 coroapi.cede = api_cede; 2449 coroapi.cede = api_cede;
2060 coroapi.cede_notself = api_cede_notself; 2450 coroapi.cede_notself = api_cede_notself;
2061 coroapi.ready = api_ready; 2451 coroapi.ready = api_ready;
2062 coroapi.is_ready = api_is_ready; 2452 coroapi.is_ready = api_is_ready;
2063 coroapi.nready = &coro_nready; 2453 coroapi.nready = coro_nready;
2064 coroapi.current = coro_current; 2454 coroapi.current = coro_current;
2065 2455
2066 GCoroAPI = &coroapi; 2456 GCoroAPI = &coroapi;
2067 sv_setiv (sv, (IV)&coroapi); 2457 sv_setiv (sv, (IV)&coroapi);
2068 SvREADONLY_on (sv); 2458 SvREADONLY_on (sv);
2069 } 2459 }
2070} 2460}
2461
2462void
2463schedule (...)
2464 CODE:
2465 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2466
2467void
2468cede (...)
2469 CODE:
2470 CORO_EXECUTE_SLF_XS (slf_init_cede);
2471
2472void
2473cede_notself (...)
2474 CODE:
2475 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2071 2476
2072void 2477void
2073_set_current (SV *current) 2478_set_current (SV *current)
2074 PROTOTYPE: $ 2479 PROTOTYPE: $
2075 CODE: 2480 CODE:
… …
2078 2483
2079void 2484void
2080_set_readyhook (SV *hook) 2485_set_readyhook (SV *hook)
2081 PROTOTYPE: $ 2486 PROTOTYPE: $
2082 CODE: 2487 CODE:
2083 LOCK;
2084 SvREFCNT_dec (coro_readyhook); 2488 SvREFCNT_dec (coro_readyhook);
2085 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2489 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2086 UNLOCK;
2087 2490
2088int 2491int
2089prio (Coro::State coro, int newprio = 0) 2492prio (Coro::State coro, int newprio = 0)
2493 PROTOTYPE: $;$
2090 ALIAS: 2494 ALIAS:
2091 nice = 1 2495 nice = 1
2092 CODE: 2496 CODE:
2093{ 2497{
2094 RETVAL = coro->prio; 2498 RETVAL = coro->prio;
… …
2109 2513
2110SV * 2514SV *
2111ready (SV *self) 2515ready (SV *self)
2112 PROTOTYPE: $ 2516 PROTOTYPE: $
2113 CODE: 2517 CODE:
2114 RETVAL = boolSV (api_ready (self)); 2518 RETVAL = boolSV (api_ready (aTHX_ self));
2115 OUTPUT: 2519 OUTPUT:
2116 RETVAL 2520 RETVAL
2117 2521
2118int 2522int
2119nready (...) 2523nready (...)
… …
2126# for async_pool speedup 2530# for async_pool speedup
2127void 2531void
2128_pool_1 (SV *cb) 2532_pool_1 (SV *cb)
2129 CODE: 2533 CODE:
2130{ 2534{
2131 struct coro *coro = SvSTATE (coro_current);
2132 HV *hv = (HV *)SvRV (coro_current); 2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv ((SV *)hv);
2133 AV *defav = GvAV (PL_defgv); 2537 AV *defav = GvAV (PL_defgv);
2134 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2135 AV *invoke_av; 2539 AV *invoke_av;
2136 int i, len; 2540 int i, len;
2137 2541
… …
2158 { 2562 {
2159 av_fill (defav, len - 1); 2563 av_fill (defav, len - 1);
2160 for (i = 0; i < len; ++i) 2564 for (i = 0; i < len; ++i)
2161 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 2565 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2162 } 2566 }
2163
2164 SvREFCNT_dec (invoke);
2165} 2567}
2166 2568
2167void 2569void
2168_pool_2 (SV *cb) 2570_pool_2 (SV *cb)
2169 CODE: 2571 CODE:
2170{ 2572{
2171 struct coro *coro = SvSTATE (coro_current); 2573 struct coro *coro = SvSTATE_current;
2172 2574
2173 sv_setsv (cb, &PL_sv_undef); 2575 sv_setsv (cb, &PL_sv_undef);
2174 2576
2175 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2577 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2176 coro->saved_deffh = 0; 2578 coro->saved_deffh = 0;
2177 2579
2178 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2580 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2179 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2581 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2180 { 2582 {
2181 SV *old = PL_diehook; 2583 SV *old = PL_diehook;
2182 PL_diehook = 0; 2584 PL_diehook = 0;
2183 SvREFCNT_dec (old); 2585 SvREFCNT_dec (old);
… …
2189 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2591 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2190 2592
2191 coro->prio = 0; 2593 coro->prio = 0;
2192 2594
2193 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2595 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2194 api_trace (coro_current, 0); 2596 api_trace (aTHX_ coro_current, 0);
2195 2597
2196 av_push (av_async_pool, newSVsv (coro_current)); 2598 av_push (av_async_pool, newSVsv (coro_current));
2197} 2599}
2198
2199#if 0
2200
2201void
2202_generator_call (...)
2203 PROTOTYPE: @
2204 PPCODE:
2205 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2206 xxxx
2207 abort ();
2208
2209SV *
2210gensub (SV *sub, ...)
2211 PROTOTYPE: &;@
2212 CODE:
2213{
2214 struct coro *coro;
2215 MAGIC *mg;
2216 CV *xcv;
2217 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2218 int i;
2219
2220 CvGV (ncv) = CvGV (cv);
2221 CvFILE (ncv) = CvFILE (cv);
2222
2223 Newz (0, coro, 1, struct coro);
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}
2242 OUTPUT:
2243 RETVAL
2244
2245#endif
2246 2600
2247 2601
2248MODULE = Coro::State PACKAGE = Coro::AIO 2602MODULE = Coro::State PACKAGE = Coro::AIO
2249 2603
2250void 2604void
2251_get_state (SV *self) 2605_get_state (SV *self)
2606 PROTOTYPE: $
2252 PPCODE: 2607 PPCODE:
2253{ 2608{
2254 AV *defav = GvAV (PL_defgv); 2609 AV *defav = GvAV (PL_defgv);
2255 AV *av = newAV (); 2610 AV *av = newAV ();
2256 int i; 2611 int i;
… …
2271 2626
2272 av_push (av, data_sv); 2627 av_push (av, data_sv);
2273 2628
2274 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 2629 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2275 2630
2276 api_ready (self); 2631 api_ready (aTHX_ self);
2277} 2632}
2278 2633
2279void 2634void
2280_set_state (SV *state) 2635_set_state (SV *state)
2281 PROTOTYPE: $ 2636 PROTOTYPE: $
… …
2299MODULE = Coro::State PACKAGE = Coro::AnyEvent 2654MODULE = Coro::State PACKAGE = Coro::AnyEvent
2300 2655
2301BOOT: 2656BOOT:
2302 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 2657 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2303 2658
2304SV * 2659void
2305_schedule (...) 2660_schedule (...)
2306 PROTOTYPE: @
2307 CODE: 2661 CODE:
2308{ 2662{
2309 static int incede; 2663 static int incede;
2310 2664
2311 api_cede_notself (); 2665 api_cede_notself (aTHX);
2312 2666
2313 ++incede; 2667 ++incede;
2314 while (coro_nready >= incede && api_cede ()) 2668 while (coro_nready >= incede && api_cede (aTHX))
2315 ; 2669 ;
2316 2670
2317 sv_setsv (sv_activity, &PL_sv_undef); 2671 sv_setsv (sv_activity, &PL_sv_undef);
2318 if (coro_nready >= incede) 2672 if (coro_nready >= incede)
2319 { 2673 {
… …
2329 2683
2330MODULE = Coro::State PACKAGE = PerlIO::cede 2684MODULE = Coro::State PACKAGE = PerlIO::cede
2331 2685
2332BOOT: 2686BOOT:
2333 PerlIO_define_layer (aTHX_ &PerlIO_cede); 2687 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2688
2689MODULE = Coro::State PACKAGE = Coro::Semaphore
2690
2691SV *
2692new (SV *klass, SV *count_ = 0)
2693 CODE:
2694{
2695 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2696 AV *av = newAV ();
2697 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2698 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2699}
2700 OUTPUT:
2701 RETVAL
2702
2703SV *
2704count (SV *self)
2705 CODE:
2706 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2707 OUTPUT:
2708 RETVAL
2709
2710void
2711up (SV *self, int adjust = 1)
2712 ALIAS:
2713 adjust = 1
2714 CODE:
2715 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2716
2717void
2718down (SV *self)
2719 CODE:
2720 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2721
2722void
2723try (SV *self)
2724 PPCODE:
2725{
2726 AV *av = (AV *)SvRV (self);
2727 SV *count_sv = AvARRAY (av)[0];
2728 IV count = SvIVX (count_sv);
2729
2730 if (count > 0)
2731 {
2732 --count;
2733 SvIVX (count_sv) = count;
2734 XSRETURN_YES;
2735 }
2736 else
2737 XSRETURN_NO;
2738}
2739
2740void
2741waiters (SV *self)
2742 CODE:
2743{
2744 AV *av = (AV *)SvRV (self);
2745
2746 if (GIMME_V == G_SCALAR)
2747 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2748 else
2749 {
2750 int i;
2751 EXTEND (SP, AvFILLp (av) + 1 - 1);
2752 for (i = 1; i <= AvFILLp (av); ++i)
2753 PUSHs (newSVsv (AvARRAY (av)[i]));
2754 }
2755}
2756

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