… | |
… | |
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 | static int cctx_max_idle = 4; |
54 | static int cctx_max_idle = 4; |
58 | |
55 | |
… | |
… | |
119 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
116 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
120 | #endif |
117 | #endif |
121 | |
118 | |
122 | /* 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 |
123 | * portable way as possible. */ |
120 | * portable way as possible. */ |
124 | #define dSTACKLEVEL volatile char stacklevel |
121 | #if __GNUC__ >= 4 |
125 | #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 |
126 | |
126 | |
127 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
127 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
128 | |
128 | |
129 | #if __GNUC__ >= 3 |
129 | #if __GNUC__ >= 3 |
130 | # define attribute(x) __attribute__(x) |
130 | # define attribute(x) __attribute__(x) |
131 | # define BARRIER __asm__ __volatile__ ("" : : : "memory") |
|
|
132 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
131 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
132 | # define INLINE static inline |
133 | #else |
133 | #else |
134 | # define attribute(x) |
134 | # define attribute(x) |
135 | # define BARRIER |
|
|
136 | # define expect(expr,value) (expr) |
135 | # define expect(expr,value) (expr) |
|
|
136 | # define INLINE static |
137 | #endif |
137 | #endif |
138 | |
138 | |
139 | #define expect_false(expr) expect ((expr) != 0, 0) |
139 | #define expect_false(expr) expect ((expr) != 0, 0) |
140 | #define expect_true(expr) expect ((expr) != 0, 1) |
140 | #define expect_true(expr) expect ((expr) != 0, 1) |
141 | |
141 | |
142 | #define NOINLINE attribute ((noinline)) |
142 | #define NOINLINE attribute ((noinline)) |
143 | |
143 | |
144 | #include "CoroAPI.h" |
144 | #include "CoroAPI.h" |
145 | |
145 | |
146 | #ifdef USE_ITHREADS |
146 | #ifdef USE_ITHREADS |
147 | static perl_mutex coro_lock; |
147 | # if CORO_PTHREAD |
148 | # define LOCK do { MUTEX_LOCK (&coro_lock); } while (0) |
148 | static void *coro_thx; |
149 | # define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0) |
149 | # endif |
150 | #else |
|
|
151 | # define LOCK (void)0 |
|
|
152 | # define UNLOCK (void)0 |
|
|
153 | #endif |
150 | #endif |
154 | |
151 | |
155 | /* helper storage struct for Coro::AIO */ |
152 | /* helper storage struct for Coro::AIO */ |
156 | struct io_state |
153 | struct io_state |
157 | { |
154 | { |
… | |
… | |
169 | static struct CoroAPI coroapi; |
166 | static struct CoroAPI coroapi; |
170 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
167 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
171 | static JMPENV *main_top_env; |
168 | static JMPENV *main_top_env; |
172 | static HV *coro_state_stash, *coro_stash; |
169 | static HV *coro_state_stash, *coro_stash; |
173 | static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
170 | static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
|
|
171 | static volatile struct coro *transfer_next; |
174 | |
172 | |
175 | static GV *irsgv; /* $/ */ |
173 | static GV *irsgv; /* $/ */ |
176 | static GV *stdoutgv; /* *STDOUT */ |
174 | static GV *stdoutgv; /* *STDOUT */ |
177 | static SV *rv_diehook; |
175 | static SV *rv_diehook; |
178 | static SV *rv_warnhook; |
176 | static SV *rv_warnhook; |
… | |
… | |
197 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
195 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
198 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
196 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
199 | }; |
197 | }; |
200 | |
198 | |
201 | /* this is a structure representing a c-level coroutine */ |
199 | /* this is a structure representing a c-level coroutine */ |
202 | typedef struct coro_cctx { |
200 | typedef struct coro_cctx |
|
|
201 | { |
203 | struct coro_cctx *next; |
202 | struct coro_cctx *next; |
204 | |
203 | |
205 | /* the stack */ |
204 | /* the stack */ |
206 | void *sptr; |
205 | void *sptr; |
207 | size_t ssize; |
206 | size_t ssize; |
… | |
… | |
225 | CF_NEW = 0x0004, /* has never been switched to */ |
224 | CF_NEW = 0x0004, /* has never been switched to */ |
226 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
225 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
227 | }; |
226 | }; |
228 | |
227 | |
229 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
228 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
230 | typedef struct { |
229 | typedef struct |
|
|
230 | { |
231 | SV *defsv; |
231 | SV *defsv; |
232 | AV *defav; |
232 | AV *defav; |
233 | SV *errsv; |
233 | SV *errsv; |
234 | SV *irsgv; |
234 | SV *irsgv; |
235 | #define VAR(name,type) type name; |
235 | #define VAR(name,type) type name; |
… | |
… | |
239 | |
239 | |
240 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
240 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
241 | |
241 | |
242 | /* this is a structure representing a perl-level coroutine */ |
242 | /* this is a structure representing a perl-level coroutine */ |
243 | struct coro { |
243 | struct coro { |
244 | /* the c coroutine allocated to this perl coroutine, if any */ |
244 | /* the C coroutine allocated to this perl coroutine, if any */ |
245 | coro_cctx *cctx; |
245 | coro_cctx *cctx; |
246 | |
246 | |
247 | /* process data */ |
247 | /* process data */ |
|
|
248 | struct CoroSLF slf_frame; /* saved slf frame */ |
248 | AV *mainstack; |
249 | AV *mainstack; |
249 | perl_slots *slot; /* basically the saved sp */ |
250 | perl_slots *slot; /* basically the saved sp */ |
250 | |
251 | |
251 | AV *args; /* data associated with this coroutine (initial args) */ |
252 | AV *args; /* data associated with this coroutine (initial args) */ |
252 | int refcnt; /* coroutines are refcounted, yes */ |
253 | int refcnt; /* coroutines are refcounted, yes */ |
253 | int flags; /* CF_ flags */ |
254 | int flags; /* CF_ flags */ |
254 | HV *hv; /* the perl hash associated with this coro, if any */ |
255 | HV *hv; /* the perl hash associated with this coro, if any */ |
|
|
256 | void (*on_destroy)(pTHX_ struct coro *coro); |
255 | |
257 | |
256 | /* statistics */ |
258 | /* statistics */ |
257 | int usecount; /* number of transfers to this coro */ |
259 | int usecount; /* number of transfers to this coro */ |
258 | |
260 | |
259 | /* coro process data */ |
261 | /* coro process data */ |
… | |
… | |
267 | struct coro *next, *prev; |
269 | struct coro *next, *prev; |
268 | }; |
270 | }; |
269 | |
271 | |
270 | typedef struct coro *Coro__State; |
272 | typedef struct coro *Coro__State; |
271 | typedef struct coro *Coro__State_or_hashref; |
273 | typedef struct coro *Coro__State_or_hashref; |
|
|
274 | |
|
|
275 | static struct CoroSLF slf_frame; /* the current slf frame */ |
272 | |
276 | |
273 | /** Coro ********************************************************************/ |
277 | /** Coro ********************************************************************/ |
274 | |
278 | |
275 | #define PRIO_MAX 3 |
279 | #define PRIO_MAX 3 |
276 | #define PRIO_HIGH 1 |
280 | #define PRIO_HIGH 1 |
… | |
… | |
280 | #define PRIO_MIN -4 |
284 | #define PRIO_MIN -4 |
281 | |
285 | |
282 | /* for Coro.pm */ |
286 | /* for Coro.pm */ |
283 | static SV *coro_current; |
287 | static SV *coro_current; |
284 | static SV *coro_readyhook; |
288 | static SV *coro_readyhook; |
285 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
289 | static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
286 | static int coro_nready; |
|
|
287 | static struct coro *coro_first; |
290 | static struct coro *coro_first; |
|
|
291 | #define coro_nready coroapi.nready |
288 | |
292 | |
289 | /** lowlevel stuff **********************************************************/ |
293 | /** lowlevel stuff **********************************************************/ |
290 | |
294 | |
291 | static SV * |
295 | static SV * |
292 | coro_get_sv (pTHX_ const char *name, int create) |
296 | coro_get_sv (pTHX_ const char *name, int create) |
… | |
… | |
395 | : 0 |
399 | : 0 |
396 | |
400 | |
397 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
401 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
398 | #define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) |
402 | #define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) |
399 | |
403 | |
400 | static struct coro * |
404 | INLINE struct coro * |
401 | SvSTATE_ (pTHX_ SV *coro) |
405 | SvSTATE_ (pTHX_ SV *coro) |
402 | { |
406 | { |
403 | HV *stash; |
407 | HV *stash; |
404 | MAGIC *mg; |
408 | MAGIC *mg; |
405 | |
409 | |
… | |
… | |
496 | CvPADLIST (cv) = (AV *)POPs; |
500 | CvPADLIST (cv) = (AV *)POPs; |
497 | } |
501 | } |
498 | |
502 | |
499 | PUTBACK; |
503 | PUTBACK; |
500 | } |
504 | } |
|
|
505 | |
|
|
506 | slf_frame = c->slf_frame; |
501 | } |
507 | } |
502 | |
508 | |
503 | static void |
509 | static void |
504 | save_perl (pTHX_ Coro__State c) |
510 | save_perl (pTHX_ Coro__State c) |
505 | { |
511 | { |
|
|
512 | c->slf_frame = slf_frame; |
|
|
513 | |
506 | { |
514 | { |
507 | dSP; |
515 | dSP; |
508 | I32 cxix = cxstack_ix; |
516 | I32 cxix = cxstack_ix; |
509 | PERL_CONTEXT *ccstk = cxstack; |
517 | PERL_CONTEXT *ccstk = cxstack; |
510 | PERL_SI *top_si = PL_curstackinfo; |
518 | PERL_SI *top_si = PL_curstackinfo; |
… | |
… | |
577 | #undef VAR |
585 | #undef VAR |
578 | } |
586 | } |
579 | } |
587 | } |
580 | |
588 | |
581 | /* |
589 | /* |
582 | * allocate various perl stacks. This is an exact copy |
590 | * allocate various perl stacks. This is almost an exact copy |
583 | * of perl.c:init_stacks, except that it uses less memory |
591 | * of perl.c:init_stacks, except that it uses less memory |
584 | * on the (sometimes correct) assumption that coroutines do |
592 | * on the (sometimes correct) assumption that coroutines do |
585 | * not usually need a lot of stackspace. |
593 | * not usually need a lot of stackspace. |
586 | */ |
594 | */ |
587 | #if CORO_PREFER_PERL_FUNCTIONS |
595 | #if CORO_PREFER_PERL_FUNCTIONS |
… | |
… | |
789 | |
797 | |
790 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
798 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
791 | } |
799 | } |
792 | |
800 | |
793 | static void |
801 | static void |
|
|
802 | prepare_nop (pTHX_ struct coro_transfer_args *ta) |
|
|
803 | { |
|
|
804 | /* kind of mega-hacky, but works */ |
|
|
805 | ta->next = ta->prev = (struct coro *)ta; |
|
|
806 | } |
|
|
807 | |
|
|
808 | static int |
|
|
809 | slf_check_nop (pTHX_ struct CoroSLF *frame) |
|
|
810 | { |
|
|
811 | return 0; |
|
|
812 | } |
|
|
813 | |
|
|
814 | static void |
794 | coro_setup (pTHX_ struct coro *coro) |
815 | coro_setup (pTHX_ struct coro *coro) |
795 | { |
816 | { |
796 | /* |
817 | /* |
797 | * emulate part of the perl startup here. |
818 | * emulate part of the perl startup here. |
798 | */ |
819 | */ |
… | |
… | |
822 | PL_rs = newSVsv (GvSV (irsgv)); |
843 | PL_rs = newSVsv (GvSV (irsgv)); |
823 | PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
844 | PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
824 | |
845 | |
825 | { |
846 | { |
826 | dSP; |
847 | dSP; |
827 | LOGOP myop; |
848 | UNOP myop; |
828 | |
849 | |
829 | Zero (&myop, 1, LOGOP); |
850 | Zero (&myop, 1, UNOP); |
830 | myop.op_next = Nullop; |
851 | myop.op_next = Nullop; |
831 | myop.op_flags = OPf_WANT_VOID; |
852 | myop.op_flags = OPf_WANT_VOID; |
832 | |
853 | |
833 | PUSHMARK (SP); |
854 | PUSHMARK (SP); |
834 | XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
855 | XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
… | |
… | |
837 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
858 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
838 | SPAGAIN; |
859 | SPAGAIN; |
839 | } |
860 | } |
840 | |
861 | |
841 | /* this newly created coroutine might be run on an existing cctx which most |
862 | /* this newly created coroutine might be run on an existing cctx which most |
842 | * likely was suspended in set_stacklevel, called from entersub. |
863 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
843 | * set_stacklevl doesn't do anything on return, but entersub does LEAVE, |
|
|
844 | * so we ENTER here for symmetry |
|
|
845 | */ |
864 | */ |
846 | ENTER; |
865 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
|
|
866 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
847 | } |
867 | } |
848 | |
868 | |
849 | static void |
869 | static void |
850 | coro_destruct (pTHX_ struct coro *coro) |
870 | coro_destruct (pTHX_ struct coro *coro) |
851 | { |
871 | { |
… | |
… | |
880 | SvREFCNT_dec (coro->throw); |
900 | SvREFCNT_dec (coro->throw); |
881 | |
901 | |
882 | coro_destruct_stacks (aTHX); |
902 | coro_destruct_stacks (aTHX); |
883 | } |
903 | } |
884 | |
904 | |
885 | static void |
905 | INLINE void |
886 | free_coro_mortal (pTHX) |
906 | free_coro_mortal (pTHX) |
887 | { |
907 | { |
888 | if (expect_true (coro_mortal)) |
908 | if (expect_true (coro_mortal)) |
889 | { |
909 | { |
890 | SvREFCNT_dec (coro_mortal); |
910 | SvREFCNT_dec (coro_mortal); |
… | |
… | |
1014 | |
1034 | |
1015 | TAINT_NOT; |
1035 | TAINT_NOT; |
1016 | return 0; |
1036 | return 0; |
1017 | } |
1037 | } |
1018 | |
1038 | |
|
|
1039 | static void |
|
|
1040 | prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) |
|
|
1041 | { |
|
|
1042 | ta->prev = (struct coro *)cctx; |
|
|
1043 | ta->next = 0; |
|
|
1044 | } |
|
|
1045 | |
1019 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
1046 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
1020 | /* _cctx_init should be careful, as it could be called at almost any time */ |
1047 | /* _cctx_init should be careful, as it could be called at almost any time */ |
1021 | /* during execution of a perl program */ |
1048 | /* during execution of a perl program */ |
|
|
1049 | /* also initialises PL_top_env */ |
1022 | static void NOINLINE |
1050 | static void NOINLINE |
1023 | cctx_prepare (pTHX_ coro_cctx *cctx) |
1051 | cctx_prepare (pTHX_ coro_cctx *cctx) |
1024 | { |
1052 | { |
1025 | dSP; |
1053 | dSP; |
1026 | LOGOP myop; |
1054 | UNOP myop; |
1027 | |
1055 | |
1028 | PL_top_env = &PL_start_env; |
1056 | PL_top_env = &PL_start_env; |
1029 | |
1057 | |
1030 | if (cctx->flags & CC_TRACE) |
1058 | if (cctx->flags & CC_TRACE) |
1031 | PL_runops = runops_trace; |
1059 | PL_runops = runops_trace; |
1032 | |
1060 | |
1033 | Zero (&myop, 1, LOGOP); |
1061 | Zero (&myop, 1, UNOP); |
1034 | myop.op_next = PL_op; |
1062 | myop.op_next = PL_op; |
1035 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
1063 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
1036 | |
1064 | |
1037 | PUSHMARK (SP); |
1065 | PUSHMARK (SP); |
1038 | EXTEND (SP, 2); |
1066 | EXTEND (SP, 2); |
1039 | PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
1067 | PUSHs (sv_2mortal (newSViv ((IV)cctx))); |
1040 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
1068 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
1041 | PUTBACK; |
1069 | PUTBACK; |
1042 | PL_op = (OP *)&myop; |
1070 | PL_op = (OP *)&myop; |
1043 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
1071 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
1044 | SPAGAIN; |
1072 | SPAGAIN; |
1045 | } |
1073 | } |
1046 | |
1074 | |
|
|
1075 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
|
|
1076 | INLINE void |
|
|
1077 | transfer_tail (pTHX) |
|
|
1078 | { |
|
|
1079 | struct coro *next = (struct coro *)transfer_next; |
|
|
1080 | assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */ |
|
|
1081 | assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next)); |
|
|
1082 | |
|
|
1083 | free_coro_mortal (aTHX); |
|
|
1084 | |
|
|
1085 | if (expect_false (next->throw)) |
|
|
1086 | { |
|
|
1087 | SV *exception = sv_2mortal (next->throw); |
|
|
1088 | |
|
|
1089 | next->throw = 0; |
|
|
1090 | sv_setsv (ERRSV, exception); |
|
|
1091 | croak (0); |
|
|
1092 | } |
|
|
1093 | } |
|
|
1094 | |
1047 | /* |
1095 | /* |
1048 | * this is a _very_ stripped down perl interpreter ;) |
1096 | * this is a _very_ stripped down perl interpreter ;) |
1049 | */ |
1097 | */ |
1050 | static void |
1098 | static void |
1051 | cctx_run (void *arg) |
1099 | cctx_run (void *arg) |
1052 | { |
1100 | { |
|
|
1101 | #ifdef USE_ITHREADS |
|
|
1102 | # if CORO_PTHREAD |
|
|
1103 | PERL_SET_CONTEXT (coro_thx); |
|
|
1104 | # endif |
|
|
1105 | #endif |
|
|
1106 | { |
1053 | dTHX; |
1107 | dTHX; |
1054 | |
1108 | |
1055 | /* cctx_run is the alternative tail of transfer(), so unlock here. */ |
1109 | /* normally we would need to skip the entersub here */ |
1056 | UNLOCK; |
1110 | /* not doing so will re-execute it, which is exactly what we want */ |
1057 | |
|
|
1058 | /* we now skip the entersub that lead to transfer() */ |
|
|
1059 | PL_op = PL_op->op_next; |
1111 | /* PL_nop = PL_nop->op_next */ |
1060 | |
1112 | |
1061 | /* inject a fake subroutine call to cctx_init */ |
1113 | /* inject a fake subroutine call to cctx_init */ |
1062 | cctx_prepare (aTHX_ (coro_cctx *)arg); |
1114 | cctx_prepare (aTHX_ (coro_cctx *)arg); |
1063 | |
1115 | |
|
|
1116 | /* cctx_run is the alternative tail of transfer() */ |
|
|
1117 | /* TODO: throwing an exception here might be deadly, VERIFY */ |
|
|
1118 | transfer_tail (aTHX); |
|
|
1119 | |
1064 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
1120 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
1065 | PL_restartop = PL_op; |
1121 | PL_restartop = PL_op; |
1066 | perl_run (PL_curinterp); |
1122 | perl_run (PL_curinterp); |
1067 | |
1123 | |
1068 | /* |
1124 | /* |
1069 | * If perl-run returns we assume exit() was being called or the coro |
1125 | * If perl-run returns we assume exit() was being called or the coro |
1070 | * fell off the end, which seems to be the only valid (non-bug) |
1126 | * fell off the end, which seems to be the only valid (non-bug) |
1071 | * reason for perl_run to return. We try to exit by jumping to the |
1127 | * reason for perl_run to return. We try to exit by jumping to the |
1072 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
1128 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
1073 | * coroutine as Coro has no such concept |
1129 | * coroutine as Coro has no such concept |
1074 | */ |
1130 | */ |
1075 | PL_top_env = main_top_env; |
1131 | PL_top_env = main_top_env; |
1076 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
1132 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
|
|
1133 | } |
1077 | } |
1134 | } |
1078 | |
1135 | |
1079 | static coro_cctx * |
1136 | static coro_cctx * |
1080 | cctx_new () |
1137 | cctx_new () |
1081 | { |
1138 | { |
1082 | coro_cctx *cctx; |
1139 | coro_cctx *cctx; |
|
|
1140 | |
|
|
1141 | ++cctx_count; |
|
|
1142 | New (0, cctx, 1, coro_cctx); |
|
|
1143 | |
|
|
1144 | cctx->gen = cctx_gen; |
|
|
1145 | cctx->flags = 0; |
|
|
1146 | cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
|
|
1147 | |
|
|
1148 | return cctx; |
|
|
1149 | } |
|
|
1150 | |
|
|
1151 | /* create a new cctx only suitable as source */ |
|
|
1152 | static coro_cctx * |
|
|
1153 | cctx_new_empty () |
|
|
1154 | { |
|
|
1155 | coro_cctx *cctx = cctx_new (); |
|
|
1156 | |
|
|
1157 | cctx->sptr = 0; |
|
|
1158 | coro_create (&cctx->cctx, 0, 0, 0, 0); |
|
|
1159 | |
|
|
1160 | return cctx; |
|
|
1161 | } |
|
|
1162 | |
|
|
1163 | /* create a new cctx suitable as destination/running a perl interpreter */ |
|
|
1164 | static coro_cctx * |
|
|
1165 | cctx_new_run () |
|
|
1166 | { |
|
|
1167 | coro_cctx *cctx = cctx_new (); |
1083 | void *stack_start; |
1168 | void *stack_start; |
1084 | size_t stack_size; |
1169 | size_t stack_size; |
1085 | |
|
|
1086 | ++cctx_count; |
|
|
1087 | Newz (0, cctx, 1, coro_cctx); |
|
|
1088 | |
|
|
1089 | cctx->gen = cctx_gen; |
|
|
1090 | |
1170 | |
1091 | #if HAVE_MMAP |
1171 | #if HAVE_MMAP |
1092 | cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
1172 | cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
1093 | /* mmap supposedly does allocate-on-write for us */ |
1173 | /* mmap supposedly does allocate-on-write for us */ |
1094 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
1174 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
1095 | |
1175 | |
1096 | if (cctx->sptr != (void *)-1) |
1176 | if (cctx->sptr != (void *)-1) |
1097 | { |
1177 | { |
1098 | # if CORO_STACKGUARD |
1178 | #if CORO_STACKGUARD |
1099 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
1179 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
1100 | # endif |
1180 | #endif |
1101 | stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
1181 | stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
1102 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
1182 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
1103 | cctx->flags |= CC_MAPPED; |
1183 | cctx->flags |= CC_MAPPED; |
1104 | } |
1184 | } |
1105 | else |
1185 | else |
1106 | #endif |
1186 | #endif |
1107 | { |
1187 | { |
1108 | cctx->ssize = cctx_stacksize * (long)sizeof (long); |
1188 | cctx->ssize = cctx_stacksize * (long)sizeof (long); |
1109 | New (0, cctx->sptr, cctx_stacksize, long); |
1189 | New (0, cctx->sptr, cctx_stacksize, long); |
1110 | |
1190 | |
1111 | if (!cctx->sptr) |
1191 | if (!cctx->sptr) |
1112 | { |
1192 | { |
1113 | perror ("FATAL: unable to allocate stack for coroutine"); |
1193 | perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
1114 | _exit (EXIT_FAILURE); |
1194 | _exit (EXIT_FAILURE); |
1115 | } |
1195 | } |
1116 | |
1196 | |
1117 | stack_start = cctx->sptr; |
1197 | stack_start = cctx->sptr; |
1118 | stack_size = cctx->ssize; |
1198 | stack_size = cctx->ssize; |
1119 | } |
1199 | } |
1120 | |
1200 | |
1121 | REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
1201 | #if CORO_USE_VALGRIND |
|
|
1202 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
|
|
1203 | #endif |
|
|
1204 | |
1122 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
1205 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
1123 | |
1206 | |
1124 | return cctx; |
1207 | return cctx; |
1125 | } |
1208 | } |
1126 | |
1209 | |
… | |
… | |
1134 | coro_destroy (&cctx->cctx); |
1217 | coro_destroy (&cctx->cctx); |
1135 | |
1218 | |
1136 | /* coro_transfer creates new, empty cctx's */ |
1219 | /* coro_transfer creates new, empty cctx's */ |
1137 | if (cctx->sptr) |
1220 | if (cctx->sptr) |
1138 | { |
1221 | { |
1139 | #if CORO_USE_VALGRIND |
1222 | #if CORO_USE_VALGRIND |
1140 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
1223 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
1141 | #endif |
1224 | #endif |
1142 | |
1225 | |
1143 | #if HAVE_MMAP |
1226 | #if HAVE_MMAP |
1144 | if (cctx->flags & CC_MAPPED) |
1227 | if (cctx->flags & CC_MAPPED) |
1145 | munmap (cctx->sptr, cctx->ssize); |
1228 | munmap (cctx->sptr, cctx->ssize); |
1146 | else |
1229 | else |
… | |
… | |
1167 | return cctx; |
1250 | return cctx; |
1168 | |
1251 | |
1169 | cctx_destroy (cctx); |
1252 | cctx_destroy (cctx); |
1170 | } |
1253 | } |
1171 | |
1254 | |
1172 | return cctx_new (); |
1255 | return cctx_new_run (); |
1173 | } |
1256 | } |
1174 | |
1257 | |
1175 | static void |
1258 | static void |
1176 | cctx_put (coro_cctx *cctx) |
1259 | cctx_put (coro_cctx *cctx) |
1177 | { |
1260 | { |
1178 | assert (("cctx_put called on non-initialised cctx", cctx->sptr)); |
1261 | assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
1179 | |
1262 | |
1180 | /* free another cctx if overlimit */ |
1263 | /* free another cctx if overlimit */ |
1181 | if (expect_false (cctx_idle >= cctx_max_idle)) |
1264 | if (expect_false (cctx_idle >= cctx_max_idle)) |
1182 | { |
1265 | { |
1183 | coro_cctx *first = cctx_first; |
1266 | coro_cctx *first = cctx_first; |
… | |
… | |
1198 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
1281 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
1199 | { |
1282 | { |
1200 | if (expect_true (prev != next)) |
1283 | if (expect_true (prev != next)) |
1201 | { |
1284 | { |
1202 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
1285 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
1203 | croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); |
1286 | croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); |
1204 | |
1287 | |
1205 | if (expect_false (next->flags & CF_RUNNING)) |
1288 | if (expect_false (next->flags & CF_RUNNING)) |
1206 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
1289 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); |
1207 | |
1290 | |
1208 | if (expect_false (next->flags & CF_DESTROYED)) |
1291 | if (expect_false (next->flags & CF_DESTROYED)) |
1209 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
1292 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); |
1210 | |
1293 | |
1211 | #if !PERL_VERSION_ATLEAST (5,10,0) |
1294 | #if !PERL_VERSION_ATLEAST (5,10,0) |
1212 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
1295 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
1213 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); |
1296 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
1214 | #endif |
1297 | #endif |
1215 | } |
1298 | } |
1216 | } |
1299 | } |
1217 | |
1300 | |
1218 | /* always use the TRANSFER macro */ |
1301 | /* always use the TRANSFER macro */ |
… | |
… | |
1222 | dSTACKLEVEL; |
1305 | dSTACKLEVEL; |
1223 | |
1306 | |
1224 | /* sometimes transfer is only called to set idle_sp */ |
1307 | /* sometimes transfer is only called to set idle_sp */ |
1225 | if (expect_false (!next)) |
1308 | if (expect_false (!next)) |
1226 | { |
1309 | { |
1227 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
1310 | ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; |
1228 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1311 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1229 | } |
1312 | } |
1230 | else if (expect_true (prev != next)) |
1313 | else if (expect_true (prev != next)) |
1231 | { |
1314 | { |
1232 | static volatile int has_throw; |
|
|
1233 | coro_cctx *prev__cctx; |
1315 | coro_cctx *prev__cctx; |
1234 | |
1316 | |
1235 | if (expect_false (prev->flags & CF_NEW)) |
1317 | if (expect_false (prev->flags & CF_NEW)) |
1236 | { |
1318 | { |
1237 | /* create a new empty/source context */ |
1319 | /* create a new empty/source context */ |
1238 | ++cctx_count; |
1320 | prev->cctx = cctx_new_empty (); |
1239 | New (0, prev->cctx, 1, coro_cctx); |
|
|
1240 | prev->cctx->sptr = 0; |
|
|
1241 | coro_create (&prev->cctx->cctx, 0, 0, 0, 0); |
|
|
1242 | |
|
|
1243 | prev->flags &= ~CF_NEW; |
1321 | prev->flags &= ~CF_NEW; |
1244 | prev->flags |= CF_RUNNING; |
1322 | prev->flags |= CF_RUNNING; |
1245 | } |
1323 | } |
1246 | |
1324 | |
1247 | prev->flags &= ~CF_RUNNING; |
1325 | prev->flags &= ~CF_RUNNING; |
1248 | next->flags |= CF_RUNNING; |
1326 | next->flags |= CF_RUNNING; |
1249 | |
|
|
1250 | LOCK; |
|
|
1251 | |
1327 | |
1252 | /* first get rid of the old state */ |
1328 | /* first get rid of the old state */ |
1253 | save_perl (aTHX_ prev); |
1329 | save_perl (aTHX_ prev); |
1254 | |
1330 | |
1255 | if (expect_false (next->flags & CF_NEW)) |
1331 | if (expect_false (next->flags & CF_NEW)) |
… | |
… | |
1262 | else |
1338 | else |
1263 | load_perl (aTHX_ next); |
1339 | load_perl (aTHX_ next); |
1264 | |
1340 | |
1265 | prev__cctx = prev->cctx; |
1341 | prev__cctx = prev->cctx; |
1266 | |
1342 | |
1267 | /* possibly "free" the cctx */ |
1343 | /* possibly untie and reuse the cctx */ |
1268 | if (expect_true ( |
1344 | if (expect_true ( |
1269 | prev__cctx->idle_sp == STACKLEVEL |
1345 | prev__cctx->idle_sp == (void *)stacklevel |
1270 | && !(prev__cctx->flags & CC_TRACE) |
1346 | && !(prev__cctx->flags & CC_TRACE) |
1271 | && !force_cctx |
1347 | && !force_cctx |
1272 | )) |
1348 | )) |
1273 | { |
1349 | { |
1274 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
1350 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
1275 | assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
1351 | assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); |
1276 | |
1352 | |
1277 | prev->cctx = 0; |
1353 | prev->cctx = 0; |
1278 | |
1354 | |
1279 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
1355 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
1280 | /* without this the next cctx_get might destroy the prev__cctx while still in use */ |
1356 | /* without this the next cctx_get might destroy the prev__cctx while still in use */ |
… | |
… | |
1288 | ++next->usecount; |
1364 | ++next->usecount; |
1289 | |
1365 | |
1290 | if (expect_true (!next->cctx)) |
1366 | if (expect_true (!next->cctx)) |
1291 | next->cctx = cctx_get (aTHX); |
1367 | next->cctx = cctx_get (aTHX); |
1292 | |
1368 | |
1293 | has_throw = !!next->throw; |
1369 | assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); |
|
|
1370 | transfer_next = next; |
1294 | |
1371 | |
1295 | if (expect_false (prev__cctx != next->cctx)) |
1372 | if (expect_false (prev__cctx != next->cctx)) |
1296 | { |
1373 | { |
1297 | prev__cctx->top_env = PL_top_env; |
1374 | prev__cctx->top_env = PL_top_env; |
1298 | PL_top_env = next->cctx->top_env; |
1375 | PL_top_env = next->cctx->top_env; |
1299 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
1376 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
1300 | } |
1377 | } |
1301 | |
1378 | |
1302 | free_coro_mortal (aTHX); |
1379 | transfer_tail (aTHX); |
1303 | UNLOCK; |
|
|
1304 | |
|
|
1305 | if (expect_false (has_throw)) |
|
|
1306 | { |
|
|
1307 | struct coro *coro = SvSTATE (coro_current); |
|
|
1308 | |
|
|
1309 | if (coro->throw) |
|
|
1310 | { |
|
|
1311 | SV *exception = coro->throw; |
|
|
1312 | coro->throw = 0; |
|
|
1313 | sv_setsv (ERRSV, exception); |
|
|
1314 | croak (0); |
|
|
1315 | } |
|
|
1316 | } |
|
|
1317 | } |
1380 | } |
1318 | } |
1381 | } |
1319 | |
|
|
1320 | struct transfer_args |
|
|
1321 | { |
|
|
1322 | struct coro *prev, *next; |
|
|
1323 | }; |
|
|
1324 | |
1382 | |
1325 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
1383 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
1326 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
1384 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
1327 | |
1385 | |
1328 | /** high level stuff ********************************************************/ |
1386 | /** high level stuff ********************************************************/ |
… | |
… | |
1330 | static int |
1388 | static int |
1331 | coro_state_destroy (pTHX_ struct coro *coro) |
1389 | coro_state_destroy (pTHX_ struct coro *coro) |
1332 | { |
1390 | { |
1333 | if (coro->flags & CF_DESTROYED) |
1391 | if (coro->flags & CF_DESTROYED) |
1334 | return 0; |
1392 | return 0; |
|
|
1393 | |
|
|
1394 | if (coro->on_destroy) |
|
|
1395 | coro->on_destroy (aTHX_ coro); |
1335 | |
1396 | |
1336 | coro->flags |= CF_DESTROYED; |
1397 | coro->flags |= CF_DESTROYED; |
1337 | |
1398 | |
1338 | if (coro->flags & CF_READY) |
1399 | if (coro->flags & CF_READY) |
1339 | { |
1400 | { |
1340 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
1401 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
1341 | /* alternative: look through all ready queues and remove the coro */ |
1402 | /* alternative: look through all ready queues and remove the coro */ |
1342 | LOCK; |
|
|
1343 | --coro_nready; |
1403 | --coro_nready; |
1344 | UNLOCK; |
|
|
1345 | } |
1404 | } |
1346 | else |
1405 | else |
1347 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
1406 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
1348 | |
1407 | |
1349 | if (coro->mainstack && coro->mainstack != main_mainstack) |
1408 | if (coro->mainstack && coro->mainstack != main_mainstack) |
1350 | { |
1409 | { |
1351 | struct coro temp; |
1410 | struct coro temp; |
1352 | |
1411 | |
1353 | if (coro->flags & CF_RUNNING) |
1412 | assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); |
1354 | croak ("FATAL: tried to destroy currently running coroutine"); |
|
|
1355 | |
1413 | |
1356 | save_perl (aTHX_ &temp); |
1414 | save_perl (aTHX_ &temp); |
1357 | load_perl (aTHX_ coro); |
1415 | load_perl (aTHX_ coro); |
1358 | |
1416 | |
1359 | coro_destruct (aTHX_ coro); |
1417 | coro_destruct (aTHX_ coro); |
… | |
… | |
1410 | # define MGf_DUP 0 |
1468 | # define MGf_DUP 0 |
1411 | #endif |
1469 | #endif |
1412 | }; |
1470 | }; |
1413 | |
1471 | |
1414 | static void |
1472 | static void |
1415 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
1473 | prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
1416 | { |
1474 | { |
1417 | ta->prev = SvSTATE (prev_sv); |
1475 | ta->prev = SvSTATE (prev_sv); |
1418 | ta->next = SvSTATE (next_sv); |
1476 | ta->next = SvSTATE (next_sv); |
1419 | TRANSFER_CHECK (*ta); |
1477 | TRANSFER_CHECK (*ta); |
1420 | } |
1478 | } |
1421 | |
1479 | |
1422 | static void |
1480 | static void |
1423 | api_transfer (SV *prev_sv, SV *next_sv) |
1481 | api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
1424 | { |
1482 | { |
1425 | dTHX; |
|
|
1426 | struct transfer_args ta; |
1483 | struct coro_transfer_args ta; |
1427 | |
1484 | |
1428 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1485 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1429 | TRANSFER (ta, 1); |
1486 | TRANSFER (ta, 1); |
1430 | } |
1487 | } |
1431 | |
1488 | |
… | |
… | |
1448 | |
1505 | |
1449 | return 0; |
1506 | return 0; |
1450 | } |
1507 | } |
1451 | |
1508 | |
1452 | static int |
1509 | static int |
1453 | api_ready (SV *coro_sv) |
1510 | api_ready (pTHX_ SV *coro_sv) |
1454 | { |
1511 | { |
1455 | dTHX; |
|
|
1456 | struct coro *coro; |
1512 | struct coro *coro; |
1457 | SV *sv_hook; |
1513 | SV *sv_hook; |
1458 | void (*xs_hook)(void); |
1514 | void (*xs_hook)(void); |
1459 | |
1515 | |
1460 | if (SvROK (coro_sv)) |
1516 | if (SvROK (coro_sv)) |
… | |
… | |
1465 | if (coro->flags & CF_READY) |
1521 | if (coro->flags & CF_READY) |
1466 | return 0; |
1522 | return 0; |
1467 | |
1523 | |
1468 | coro->flags |= CF_READY; |
1524 | coro->flags |= CF_READY; |
1469 | |
1525 | |
1470 | LOCK; |
|
|
1471 | |
|
|
1472 | sv_hook = coro_nready ? 0 : coro_readyhook; |
1526 | sv_hook = coro_nready ? 0 : coro_readyhook; |
1473 | xs_hook = coro_nready ? 0 : coroapi.readyhook; |
1527 | xs_hook = coro_nready ? 0 : coroapi.readyhook; |
1474 | |
1528 | |
1475 | coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); |
1529 | coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); |
1476 | ++coro_nready; |
1530 | ++coro_nready; |
1477 | |
1531 | |
1478 | UNLOCK; |
|
|
1479 | |
|
|
1480 | if (sv_hook) |
1532 | if (sv_hook) |
1481 | { |
1533 | { |
1482 | dSP; |
1534 | dSP; |
1483 | |
1535 | |
1484 | ENTER; |
1536 | ENTER; |
… | |
… | |
1498 | |
1550 | |
1499 | return 1; |
1551 | return 1; |
1500 | } |
1552 | } |
1501 | |
1553 | |
1502 | static int |
1554 | static int |
1503 | api_is_ready (SV *coro_sv) |
1555 | api_is_ready (pTHX_ SV *coro_sv) |
1504 | { |
1556 | { |
1505 | dTHX; |
|
|
1506 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1557 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1507 | } |
1558 | } |
1508 | |
1559 | |
1509 | static void |
1560 | INLINE void |
1510 | prepare_schedule (pTHX_ struct transfer_args *ta) |
1561 | prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
1511 | { |
1562 | { |
1512 | SV *prev_sv, *next_sv; |
1563 | SV *prev_sv, *next_sv; |
1513 | |
1564 | |
1514 | for (;;) |
1565 | for (;;) |
1515 | { |
1566 | { |
1516 | LOCK; |
|
|
1517 | next_sv = coro_deq (aTHX); |
1567 | next_sv = coro_deq (aTHX); |
1518 | |
1568 | |
1519 | /* nothing to schedule: call the idle handler */ |
1569 | /* nothing to schedule: call the idle handler */ |
1520 | if (expect_false (!next_sv)) |
1570 | if (expect_false (!next_sv)) |
1521 | { |
1571 | { |
1522 | dSP; |
1572 | dSP; |
1523 | UNLOCK; |
|
|
1524 | |
1573 | |
1525 | ENTER; |
1574 | ENTER; |
1526 | SAVETMPS; |
1575 | SAVETMPS; |
1527 | |
1576 | |
1528 | PUSHMARK (SP); |
1577 | PUSHMARK (SP); |
… | |
… | |
1538 | ta->next = SvSTATE (next_sv); |
1587 | ta->next = SvSTATE (next_sv); |
1539 | |
1588 | |
1540 | /* cannot transfer to destroyed coros, skip and look for next */ |
1589 | /* cannot transfer to destroyed coros, skip and look for next */ |
1541 | if (expect_false (ta->next->flags & CF_DESTROYED)) |
1590 | if (expect_false (ta->next->flags & CF_DESTROYED)) |
1542 | { |
1591 | { |
1543 | UNLOCK; |
|
|
1544 | SvREFCNT_dec (next_sv); |
1592 | SvREFCNT_dec (next_sv); |
1545 | /* coro_nready is already taken care of by destroy */ |
1593 | /* coro_nready has already been taken care of by destroy */ |
1546 | continue; |
1594 | continue; |
1547 | } |
1595 | } |
1548 | |
1596 | |
1549 | --coro_nready; |
1597 | --coro_nready; |
1550 | UNLOCK; |
|
|
1551 | break; |
1598 | break; |
1552 | } |
1599 | } |
1553 | |
1600 | |
1554 | /* free this only after the transfer */ |
1601 | /* free this only after the transfer */ |
1555 | prev_sv = SvRV (coro_current); |
1602 | prev_sv = SvRV (coro_current); |
1556 | ta->prev = SvSTATE (prev_sv); |
1603 | ta->prev = SvSTATE (prev_sv); |
1557 | TRANSFER_CHECK (*ta); |
1604 | TRANSFER_CHECK (*ta); |
1558 | assert (ta->next->flags & CF_READY); |
1605 | assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); |
1559 | ta->next->flags &= ~CF_READY; |
1606 | ta->next->flags &= ~CF_READY; |
1560 | SvRV_set (coro_current, next_sv); |
1607 | SvRV_set (coro_current, next_sv); |
1561 | |
1608 | |
1562 | LOCK; |
|
|
1563 | free_coro_mortal (aTHX); |
1609 | free_coro_mortal (aTHX); |
1564 | coro_mortal = prev_sv; |
1610 | coro_mortal = prev_sv; |
1565 | UNLOCK; |
|
|
1566 | } |
1611 | } |
1567 | |
1612 | |
1568 | static void |
1613 | INLINE void |
1569 | prepare_cede (pTHX_ struct transfer_args *ta) |
1614 | prepare_cede (pTHX_ struct coro_transfer_args *ta) |
1570 | { |
1615 | { |
1571 | api_ready (coro_current); |
1616 | api_ready (aTHX_ coro_current); |
1572 | prepare_schedule (aTHX_ ta); |
1617 | prepare_schedule (aTHX_ ta); |
1573 | } |
1618 | } |
1574 | |
1619 | |
|
|
1620 | INLINE void |
|
|
1621 | prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
|
|
1622 | { |
|
|
1623 | SV *prev = SvRV (coro_current); |
|
|
1624 | |
|
|
1625 | if (coro_nready) |
|
|
1626 | { |
|
|
1627 | prepare_schedule (aTHX_ ta); |
|
|
1628 | api_ready (aTHX_ prev); |
|
|
1629 | } |
|
|
1630 | else |
|
|
1631 | prepare_nop (aTHX_ ta); |
|
|
1632 | } |
|
|
1633 | |
|
|
1634 | static void |
|
|
1635 | api_schedule (pTHX) |
|
|
1636 | { |
|
|
1637 | struct coro_transfer_args ta; |
|
|
1638 | |
|
|
1639 | prepare_schedule (aTHX_ &ta); |
|
|
1640 | TRANSFER (ta, 1); |
|
|
1641 | } |
|
|
1642 | |
1575 | static int |
1643 | static int |
1576 | prepare_cede_notself (pTHX_ struct transfer_args *ta) |
1644 | api_cede (pTHX) |
1577 | { |
1645 | { |
1578 | if (coro_nready) |
1646 | struct coro_transfer_args ta; |
1579 | { |
1647 | |
1580 | SV *prev = SvRV (coro_current); |
|
|
1581 | prepare_schedule (aTHX_ ta); |
1648 | prepare_cede (aTHX_ &ta); |
1582 | api_ready (prev); |
1649 | |
|
|
1650 | if (expect_true (ta.prev != ta.next)) |
|
|
1651 | { |
|
|
1652 | TRANSFER (ta, 1); |
1583 | return 1; |
1653 | return 1; |
1584 | } |
1654 | } |
1585 | else |
1655 | else |
1586 | return 0; |
1656 | return 0; |
1587 | } |
1657 | } |
1588 | |
1658 | |
1589 | static void |
|
|
1590 | api_schedule (void) |
|
|
1591 | { |
|
|
1592 | dTHX; |
|
|
1593 | struct transfer_args ta; |
|
|
1594 | |
|
|
1595 | prepare_schedule (aTHX_ &ta); |
|
|
1596 | TRANSFER (ta, 1); |
|
|
1597 | } |
|
|
1598 | |
|
|
1599 | static int |
1659 | static int |
1600 | api_cede (void) |
1660 | api_cede_notself (pTHX) |
1601 | { |
1661 | { |
1602 | dTHX; |
1662 | if (coro_nready) |
|
|
1663 | { |
1603 | struct transfer_args ta; |
1664 | struct coro_transfer_args ta; |
1604 | |
1665 | |
1605 | prepare_cede (aTHX_ &ta); |
1666 | prepare_cede_notself (aTHX_ &ta); |
1606 | |
|
|
1607 | if (expect_true (ta.prev != ta.next)) |
|
|
1608 | { |
|
|
1609 | TRANSFER (ta, 1); |
1667 | TRANSFER (ta, 1); |
1610 | return 1; |
1668 | return 1; |
1611 | } |
1669 | } |
1612 | else |
1670 | else |
1613 | return 0; |
1671 | return 0; |
1614 | } |
1672 | } |
1615 | |
1673 | |
1616 | static int |
1674 | static void |
1617 | api_cede_notself (void) |
|
|
1618 | { |
|
|
1619 | dTHX; |
|
|
1620 | struct transfer_args ta; |
|
|
1621 | |
|
|
1622 | if (prepare_cede_notself (aTHX_ &ta)) |
|
|
1623 | { |
|
|
1624 | TRANSFER (ta, 1); |
|
|
1625 | return 1; |
|
|
1626 | } |
|
|
1627 | else |
|
|
1628 | return 0; |
|
|
1629 | } |
|
|
1630 | |
|
|
1631 | static void |
|
|
1632 | api_trace (SV *coro_sv, int flags) |
1675 | api_trace (pTHX_ SV *coro_sv, int flags) |
1633 | { |
1676 | { |
1634 | dTHX; |
|
|
1635 | struct coro *coro = SvSTATE (coro_sv); |
1677 | struct coro *coro = SvSTATE (coro_sv); |
1636 | |
1678 | |
1637 | if (flags & CC_TRACE) |
1679 | if (flags & CC_TRACE) |
1638 | { |
1680 | { |
1639 | if (!coro->cctx) |
1681 | if (!coro->cctx) |
1640 | coro->cctx = cctx_new (); |
1682 | coro->cctx = cctx_new_run (); |
1641 | else if (!(coro->cctx->flags & CC_TRACE)) |
1683 | else if (!(coro->cctx->flags & CC_TRACE)) |
1642 | croak ("cannot enable tracing on coroutine with custom stack"); |
1684 | croak ("cannot enable tracing on coroutine with custom stack,"); |
1643 | |
1685 | |
1644 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
1686 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
1645 | } |
1687 | } |
1646 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
1688 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
1647 | { |
1689 | { |
… | |
… | |
1652 | else |
1694 | else |
1653 | coro->slot->runops = RUNOPS_DEFAULT; |
1695 | coro->slot->runops = RUNOPS_DEFAULT; |
1654 | } |
1696 | } |
1655 | } |
1697 | } |
1656 | |
1698 | |
1657 | #if 0 |
|
|
1658 | static int |
|
|
1659 | coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
1660 | { |
|
|
1661 | AV *padlist; |
|
|
1662 | AV *av = (AV *)mg->mg_obj; |
|
|
1663 | |
|
|
1664 | abort (); |
|
|
1665 | |
|
|
1666 | return 0; |
|
|
1667 | } |
|
|
1668 | |
|
|
1669 | static MGVTBL coro_gensub_vtbl = { |
|
|
1670 | 0, 0, 0, 0, |
|
|
1671 | coro_gensub_free |
|
|
1672 | }; |
|
|
1673 | #endif |
|
|
1674 | |
|
|
1675 | /*****************************************************************************/ |
1699 | /*****************************************************************************/ |
1676 | /* PerlIO::cede */ |
1700 | /* PerlIO::cede */ |
1677 | |
1701 | |
1678 | typedef struct |
1702 | typedef struct |
1679 | { |
1703 | { |
… | |
… | |
1706 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
1730 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
1707 | double now = nvtime (); |
1731 | double now = nvtime (); |
1708 | |
1732 | |
1709 | if (now >= self->next) |
1733 | if (now >= self->next) |
1710 | { |
1734 | { |
1711 | api_cede (); |
1735 | api_cede (aTHX); |
1712 | self->next = now + self->every; |
1736 | self->next = now + self->every; |
1713 | } |
1737 | } |
1714 | |
1738 | |
1715 | return PerlIOBuf_flush (aTHX_ f); |
1739 | return PerlIOBuf_flush (aTHX_ f); |
1716 | } |
1740 | } |
… | |
… | |
1745 | PerlIOBuf_get_ptr, |
1769 | PerlIOBuf_get_ptr, |
1746 | PerlIOBuf_get_cnt, |
1770 | PerlIOBuf_get_cnt, |
1747 | PerlIOBuf_set_ptrcnt, |
1771 | PerlIOBuf_set_ptrcnt, |
1748 | }; |
1772 | }; |
1749 | |
1773 | |
|
|
1774 | /*****************************************************************************/ |
|
|
1775 | |
|
|
1776 | static const CV *slf_cv; /* for quick consistency check */ |
|
|
1777 | |
|
|
1778 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
1779 | static SV *slf_arg0; |
|
|
1780 | static SV *slf_arg1; |
|
|
1781 | static SV *slf_arg2; |
|
|
1782 | |
|
|
1783 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
1784 | /* recreate the stack frame as perl will on following calls */ |
|
|
1785 | /* since entersub cleared the stack */ |
|
|
1786 | static OP * |
|
|
1787 | pp_restore (pTHX) |
|
|
1788 | { |
|
|
1789 | dSP; |
|
|
1790 | |
|
|
1791 | PUSHMARK (SP); |
|
|
1792 | |
|
|
1793 | EXTEND (SP, 3); |
|
|
1794 | if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); |
|
|
1795 | if (slf_arg1) PUSHs (sv_2mortal (slf_arg1)); |
|
|
1796 | if (slf_arg2) PUSHs (sv_2mortal (slf_arg2)); |
|
|
1797 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
1798 | |
|
|
1799 | RETURNOP (slf_restore.op_first); |
|
|
1800 | } |
|
|
1801 | |
|
|
1802 | static void |
|
|
1803 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
|
|
1804 | { |
|
|
1805 | prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data); |
|
|
1806 | } |
|
|
1807 | |
|
|
1808 | static void |
|
|
1809 | slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1810 | { |
|
|
1811 | assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); |
|
|
1812 | |
|
|
1813 | frame->prepare = slf_prepare_set_stacklevel; |
|
|
1814 | frame->check = slf_check_nop; |
|
|
1815 | frame->data = (void *)SvIV (arg [0]); |
|
|
1816 | } |
|
|
1817 | |
|
|
1818 | static void |
|
|
1819 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
1820 | { |
|
|
1821 | SV **arg = (SV **)slf_frame.data; |
|
|
1822 | |
|
|
1823 | prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
|
|
1824 | } |
|
|
1825 | |
|
|
1826 | static void |
|
|
1827 | slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1828 | { |
|
|
1829 | if (items != 2) |
|
|
1830 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
|
|
1831 | |
|
|
1832 | frame->prepare = slf_prepare_transfer; |
|
|
1833 | frame->check = slf_check_nop; |
|
|
1834 | frame->data = (void *)arg; /* let's hope it will stay valid */ |
|
|
1835 | } |
|
|
1836 | |
|
|
1837 | static void |
|
|
1838 | slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1839 | { |
|
|
1840 | frame->prepare = prepare_schedule; |
|
|
1841 | frame->check = slf_check_nop; |
|
|
1842 | } |
|
|
1843 | |
|
|
1844 | static void |
|
|
1845 | slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1846 | { |
|
|
1847 | frame->prepare = prepare_cede; |
|
|
1848 | frame->check = slf_check_nop; |
|
|
1849 | } |
|
|
1850 | |
|
|
1851 | static void |
|
|
1852 | slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1853 | { |
|
|
1854 | frame->prepare = prepare_cede_notself; |
|
|
1855 | frame->check = slf_check_nop; |
|
|
1856 | } |
|
|
1857 | |
|
|
1858 | /* we hijack an hopefully unused CV flag for our purposes */ |
|
|
1859 | #define CVf_SLF 0x4000 |
|
|
1860 | |
|
|
1861 | /* |
|
|
1862 | * these not obviously related functions are all rolled into one |
|
|
1863 | * function to increase chances that they all will call transfer with the same |
|
|
1864 | * stack offset |
|
|
1865 | * SLF stands for "schedule-like-function". |
|
|
1866 | */ |
|
|
1867 | static OP * |
|
|
1868 | pp_slf (pTHX) |
|
|
1869 | { |
|
|
1870 | I32 checkmark; /* mark SP to see how many elements check has pushed */ |
|
|
1871 | |
|
|
1872 | /* set up the slf frame, unless it has already been set-up */ |
|
|
1873 | /* the latter happens when a new coro has been started */ |
|
|
1874 | /* or when a new cctx was attached to an existing coroutine */ |
|
|
1875 | if (expect_true (!slf_frame.prepare)) |
|
|
1876 | { |
|
|
1877 | /* first iteration */ |
|
|
1878 | dSP; |
|
|
1879 | SV **arg = PL_stack_base + TOPMARK + 1; |
|
|
1880 | int items = SP - arg; /* args without function object */ |
|
|
1881 | SV *gv = *sp; |
|
|
1882 | |
|
|
1883 | /* do a quick consistency check on the "function" object, and if it isn't */ |
|
|
1884 | /* for us, divert to the real entersub */ |
|
|
1885 | if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
|
|
1886 | return PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1887 | |
|
|
1888 | /* pop args */ |
|
|
1889 | SP = PL_stack_base + POPMARK; |
|
|
1890 | |
|
|
1891 | if (!(PL_op->op_flags & OPf_STACKED)) |
|
|
1892 | { |
|
|
1893 | /* ampersand-form of call, use @_ instead of stack */ |
|
|
1894 | AV *av = GvAV (PL_defgv); |
|
|
1895 | arg = AvARRAY (av); |
|
|
1896 | items = AvFILLp (av) + 1; |
|
|
1897 | } |
|
|
1898 | |
|
|
1899 | PUTBACK; |
|
|
1900 | |
|
|
1901 | /* now call the init function, which needs to set up slf_frame */ |
|
|
1902 | ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
|
|
1903 | (aTHX_ &slf_frame, GvCV (gv), arg, items); |
|
|
1904 | } |
|
|
1905 | |
|
|
1906 | /* now that we have a slf_frame, interpret it! */ |
|
|
1907 | /* we use a callback system not to make the code needlessly */ |
|
|
1908 | /* complicated, but so we can run multiple perl coros from one cctx */ |
|
|
1909 | |
|
|
1910 | do |
|
|
1911 | { |
|
|
1912 | struct coro_transfer_args ta; |
|
|
1913 | |
|
|
1914 | slf_frame.prepare (aTHX_ &ta); |
|
|
1915 | TRANSFER (ta, 0); |
|
|
1916 | |
|
|
1917 | checkmark = PL_stack_sp - PL_stack_base; |
|
|
1918 | } |
|
|
1919 | while (slf_frame.check (aTHX_ &slf_frame)); |
|
|
1920 | |
|
|
1921 | { |
|
|
1922 | dSP; |
|
|
1923 | SV **bot = PL_stack_base + checkmark; |
|
|
1924 | int gimme = GIMME_V; |
|
|
1925 | |
|
|
1926 | slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */ |
|
|
1927 | |
|
|
1928 | /* make sure we put something on the stack in scalar context */ |
|
|
1929 | if (gimme == G_SCALAR) |
|
|
1930 | { |
|
|
1931 | if (sp == bot) |
|
|
1932 | XPUSHs (&PL_sv_undef); |
|
|
1933 | |
|
|
1934 | SP = bot + 1; |
|
|
1935 | } |
|
|
1936 | |
|
|
1937 | PUTBACK; |
|
|
1938 | } |
|
|
1939 | |
|
|
1940 | return NORMAL; |
|
|
1941 | } |
|
|
1942 | |
|
|
1943 | static void |
|
|
1944 | api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) |
|
|
1945 | { |
|
|
1946 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
|
|
1947 | |
|
|
1948 | if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
|
|
1949 | && PL_op->op_ppaddr != pp_slf) |
|
|
1950 | croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
|
|
1951 | |
|
|
1952 | if (items > 3) |
|
|
1953 | croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items); |
|
|
1954 | |
|
|
1955 | CvFLAGS (cv) |= CVf_SLF; |
|
|
1956 | CvXSUBANY (cv).any_ptr = (void *)init_cb; |
|
|
1957 | slf_cv = cv; |
|
|
1958 | |
|
|
1959 | /* we patch the op, and then re-run the whole call */ |
|
|
1960 | /* we have to put the same argument on the stack for this to work */ |
|
|
1961 | /* and this will be done by pp_restore */ |
|
|
1962 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
1963 | slf_restore.op_type = OP_CUSTOM; |
|
|
1964 | slf_restore.op_ppaddr = pp_restore; |
|
|
1965 | slf_restore.op_first = PL_op; |
|
|
1966 | |
|
|
1967 | slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; |
|
|
1968 | slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; |
|
|
1969 | slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0; |
|
|
1970 | |
|
|
1971 | PL_op->op_ppaddr = pp_slf; |
|
|
1972 | |
|
|
1973 | PL_op = (OP *)&slf_restore; |
|
|
1974 | } |
|
|
1975 | |
|
|
1976 | /*****************************************************************************/ |
|
|
1977 | |
|
|
1978 | static void |
|
|
1979 | coro_semaphore_adjust (AV *av, int adjust) |
|
|
1980 | { |
|
|
1981 | SV *count_sv = AvARRAY (av)[0]; |
|
|
1982 | IV count = SvIVX (count_sv); |
|
|
1983 | |
|
|
1984 | count += adjust; |
|
|
1985 | SvIVX (count_sv) = count; |
|
|
1986 | |
|
|
1987 | /* now wake up as many waiters as possible */ |
|
|
1988 | while (count > 0 && AvFILLp (av) >= count) |
|
|
1989 | { |
|
|
1990 | SV *cb; |
|
|
1991 | |
|
|
1992 | /* swap first two elements so we can shift a waiter */ |
|
|
1993 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
1994 | AvARRAY (av)[1] = count_sv; |
|
|
1995 | cb = av_shift (av); |
|
|
1996 | |
|
|
1997 | if (SvOBJECT (cb)) |
|
|
1998 | api_ready (aTHX_ cb); |
|
|
1999 | else |
|
|
2000 | croak ("callbacks not yet supported"); |
|
|
2001 | |
|
|
2002 | SvREFCNT_dec (cb); |
|
|
2003 | |
|
|
2004 | --count; |
|
|
2005 | } |
|
|
2006 | } |
|
|
2007 | |
|
|
2008 | static void |
|
|
2009 | coro_semaphore_on_destroy (pTHX_ struct coro *coro) |
|
|
2010 | { |
|
|
2011 | /* call $sem->adjust (0) to possibly wake up some waiters */ |
|
|
2012 | coro_semaphore_adjust ((AV *)coro->slf_frame.data, 0); |
|
|
2013 | } |
|
|
2014 | |
|
|
2015 | static int |
|
|
2016 | slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
|
|
2017 | { |
|
|
2018 | AV *av = (AV *)frame->data; |
|
|
2019 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2020 | |
|
|
2021 | if (SvIVX (count_sv) > 0) |
|
|
2022 | { |
|
|
2023 | SvSTATE (coro_current)->on_destroy = 0; |
|
|
2024 | SvIVX (count_sv) = SvIVX (count_sv) - 1; |
|
|
2025 | return 0; |
|
|
2026 | } |
|
|
2027 | else |
|
|
2028 | { |
|
|
2029 | int i; |
|
|
2030 | /* if we were woken up but can't down, we look through the whole */ |
|
|
2031 | /* waiters list and only add us if we aren't in there already */ |
|
|
2032 | /* this avoids some degenerate memory usage cases */ |
|
|
2033 | |
|
|
2034 | for (i = 1; i <= AvFILLp (av); ++i) |
|
|
2035 | if (AvARRAY (av)[i] == SvRV (coro_current)) |
|
|
2036 | return 1; |
|
|
2037 | |
|
|
2038 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2039 | return 1; |
|
|
2040 | } |
|
|
2041 | } |
|
|
2042 | |
|
|
2043 | static void |
|
|
2044 | slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2045 | { |
|
|
2046 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2047 | |
|
|
2048 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2049 | { |
|
|
2050 | frame->data = (void *)av; |
|
|
2051 | frame->prepare = prepare_nop; |
|
|
2052 | } |
|
|
2053 | else |
|
|
2054 | { |
|
|
2055 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2056 | |
|
|
2057 | frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
|
|
2058 | frame->prepare = prepare_schedule; |
|
|
2059 | |
|
|
2060 | /* to avoid race conditions when a woken-up coro gets terminated */ |
|
|
2061 | /* we arrange for a temporary on_destroy that calls adjust (0) */ |
|
|
2062 | SvSTATE (coro_current)->on_destroy = coro_semaphore_on_destroy; |
|
|
2063 | } |
|
|
2064 | |
|
|
2065 | frame->check = slf_check_semaphore_down; |
|
|
2066 | |
|
|
2067 | } |
|
|
2068 | |
|
|
2069 | /*****************************************************************************/ |
|
|
2070 | |
|
|
2071 | #define GENSUB_ARG CvXSUBANY (cv).any_ptr |
|
|
2072 | |
|
|
2073 | /* create a closure from XS, returns a code reference */ |
|
|
2074 | /* the arg can be accessed via GENSUB_ARG from the callback */ |
|
|
2075 | /* the callback must use dXSARGS/XSRETURN */ |
|
|
2076 | static SV * |
|
|
2077 | gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
|
|
2078 | { |
|
|
2079 | CV *cv = (CV *)NEWSV (0, 0); |
|
|
2080 | |
|
|
2081 | sv_upgrade ((SV *)cv, SVt_PVCV); |
|
|
2082 | |
|
|
2083 | CvANON_on (cv); |
|
|
2084 | CvISXSUB_on (cv); |
|
|
2085 | CvXSUB (cv) = xsub; |
|
|
2086 | GENSUB_ARG = arg; |
|
|
2087 | |
|
|
2088 | return newRV_noinc ((SV *)cv); |
|
|
2089 | } |
|
|
2090 | |
|
|
2091 | /*****************************************************************************/ |
1750 | |
2092 | |
1751 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
2093 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
1752 | |
2094 | |
1753 | PROTOTYPES: DISABLE |
2095 | PROTOTYPES: DISABLE |
1754 | |
2096 | |
1755 | BOOT: |
2097 | BOOT: |
1756 | { |
2098 | { |
1757 | #ifdef USE_ITHREADS |
2099 | #ifdef USE_ITHREADS |
1758 | MUTEX_INIT (&coro_lock); |
2100 | MUTEX_INIT (&coro_lock); |
|
|
2101 | # if CORO_PTHREAD |
|
|
2102 | coro_thx = PERL_GET_CONTEXT; |
|
|
2103 | # endif |
1759 | #endif |
2104 | #endif |
1760 | BOOT_PAGESIZE; |
2105 | BOOT_PAGESIZE; |
1761 | |
2106 | |
1762 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
2107 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
1763 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
2108 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
… | |
… | |
1781 | main_top_env = PL_top_env; |
2126 | main_top_env = PL_top_env; |
1782 | |
2127 | |
1783 | while (main_top_env->je_prev) |
2128 | while (main_top_env->je_prev) |
1784 | main_top_env = main_top_env->je_prev; |
2129 | main_top_env = main_top_env->je_prev; |
1785 | |
2130 | |
|
|
2131 | { |
|
|
2132 | SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); |
|
|
2133 | |
|
|
2134 | if (!PL_custom_op_names) PL_custom_op_names = newHV (); |
|
|
2135 | hv_store_ent (PL_custom_op_names, slf, |
|
|
2136 | newSVpv ("coro_slf", 0), 0); |
|
|
2137 | |
|
|
2138 | if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); |
|
|
2139 | hv_store_ent (PL_custom_op_descs, slf, |
|
|
2140 | newSVpv ("coro schedule like function", 0), 0); |
|
|
2141 | } |
|
|
2142 | |
1786 | coroapi.ver = CORO_API_VERSION; |
2143 | coroapi.ver = CORO_API_VERSION; |
1787 | coroapi.rev = CORO_API_REVISION; |
2144 | coroapi.rev = CORO_API_REVISION; |
|
|
2145 | |
1788 | coroapi.transfer = api_transfer; |
2146 | coroapi.transfer = api_transfer; |
|
|
2147 | |
|
|
2148 | coroapi.sv_state = SvSTATE_; |
|
|
2149 | coroapi.execute_slf = api_execute_slf; |
|
|
2150 | coroapi.prepare_nop = prepare_nop; |
|
|
2151 | coroapi.prepare_schedule = prepare_schedule; |
|
|
2152 | coroapi.prepare_cede = prepare_cede; |
|
|
2153 | coroapi.prepare_cede_notself = prepare_cede_notself; |
1789 | |
2154 | |
1790 | { |
2155 | { |
1791 | SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
2156 | SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
1792 | |
2157 | |
1793 | if (!svp) croak ("Time::HiRes is required"); |
2158 | if (!svp) croak ("Time::HiRes is required"); |
… | |
… | |
1826 | av_push (coro->args, newSVsv (ST (i))); |
2191 | av_push (coro->args, newSVsv (ST (i))); |
1827 | } |
2192 | } |
1828 | OUTPUT: |
2193 | OUTPUT: |
1829 | RETVAL |
2194 | RETVAL |
1830 | |
2195 | |
1831 | # these not obviously related functions are all rolled into the same xs |
|
|
1832 | # function to increase chances that they all will call transfer with the same |
|
|
1833 | # stack offset |
|
|
1834 | void |
2196 | void |
1835 | _set_stacklevel (...) |
2197 | _set_stacklevel (...) |
1836 | ALIAS: |
2198 | CODE: |
1837 | Coro::State::transfer = 1 |
2199 | api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items); |
1838 | Coro::schedule = 2 |
|
|
1839 | Coro::cede = 3 |
|
|
1840 | Coro::cede_notself = 4 |
|
|
1841 | CODE: |
|
|
1842 | { |
|
|
1843 | struct transfer_args ta; |
|
|
1844 | |
2200 | |
1845 | PUTBACK; |
2201 | void |
1846 | switch (ix) |
2202 | transfer (...) |
1847 | { |
2203 | PROTOTYPE: $$ |
1848 | case 0: |
2204 | CODE: |
1849 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
2205 | api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); |
1850 | ta.next = 0; |
|
|
1851 | break; |
|
|
1852 | |
|
|
1853 | case 1: |
|
|
1854 | if (items != 2) |
|
|
1855 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items); |
|
|
1856 | |
|
|
1857 | prepare_transfer (aTHX_ &ta, ST (0), ST (1)); |
|
|
1858 | break; |
|
|
1859 | |
|
|
1860 | case 2: |
|
|
1861 | prepare_schedule (aTHX_ &ta); |
|
|
1862 | break; |
|
|
1863 | |
|
|
1864 | case 3: |
|
|
1865 | prepare_cede (aTHX_ &ta); |
|
|
1866 | break; |
|
|
1867 | |
|
|
1868 | case 4: |
|
|
1869 | if (!prepare_cede_notself (aTHX_ &ta)) |
|
|
1870 | XSRETURN_EMPTY; |
|
|
1871 | |
|
|
1872 | break; |
|
|
1873 | } |
|
|
1874 | SPAGAIN; |
|
|
1875 | |
|
|
1876 | BARRIER; |
|
|
1877 | PUTBACK; |
|
|
1878 | TRANSFER (ta, 0); |
|
|
1879 | SPAGAIN; /* might be the sp of a different coroutine now */ |
|
|
1880 | /* be extra careful not to ever do anything after TRANSFER */ |
|
|
1881 | } |
|
|
1882 | |
2206 | |
1883 | bool |
2207 | bool |
1884 | _destroy (SV *coro_sv) |
2208 | _destroy (SV *coro_sv) |
1885 | CODE: |
2209 | CODE: |
1886 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
2210 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
… | |
… | |
1893 | CODE: |
2217 | CODE: |
1894 | _exit (code); |
2218 | _exit (code); |
1895 | |
2219 | |
1896 | int |
2220 | int |
1897 | cctx_stacksize (int new_stacksize = 0) |
2221 | cctx_stacksize (int new_stacksize = 0) |
|
|
2222 | PROTOTYPE: ;$ |
1898 | CODE: |
2223 | CODE: |
1899 | RETVAL = cctx_stacksize; |
2224 | RETVAL = cctx_stacksize; |
1900 | if (new_stacksize) |
2225 | if (new_stacksize) |
1901 | { |
2226 | { |
1902 | cctx_stacksize = new_stacksize; |
2227 | cctx_stacksize = new_stacksize; |
… | |
… | |
1905 | OUTPUT: |
2230 | OUTPUT: |
1906 | RETVAL |
2231 | RETVAL |
1907 | |
2232 | |
1908 | int |
2233 | int |
1909 | cctx_max_idle (int max_idle = 0) |
2234 | cctx_max_idle (int max_idle = 0) |
|
|
2235 | PROTOTYPE: ;$ |
1910 | CODE: |
2236 | CODE: |
1911 | RETVAL = cctx_max_idle; |
2237 | RETVAL = cctx_max_idle; |
1912 | if (max_idle > 1) |
2238 | if (max_idle > 1) |
1913 | cctx_max_idle = max_idle; |
2239 | cctx_max_idle = max_idle; |
1914 | OUTPUT: |
2240 | OUTPUT: |
1915 | RETVAL |
2241 | RETVAL |
1916 | |
2242 | |
1917 | int |
2243 | int |
1918 | cctx_count () |
2244 | cctx_count () |
|
|
2245 | PROTOTYPE: |
1919 | CODE: |
2246 | CODE: |
1920 | RETVAL = cctx_count; |
2247 | RETVAL = cctx_count; |
1921 | OUTPUT: |
2248 | OUTPUT: |
1922 | RETVAL |
2249 | RETVAL |
1923 | |
2250 | |
1924 | int |
2251 | int |
1925 | cctx_idle () |
2252 | cctx_idle () |
|
|
2253 | PROTOTYPE: |
1926 | CODE: |
2254 | CODE: |
1927 | RETVAL = cctx_idle; |
2255 | RETVAL = cctx_idle; |
1928 | OUTPUT: |
2256 | OUTPUT: |
1929 | RETVAL |
2257 | RETVAL |
1930 | |
2258 | |
1931 | void |
2259 | void |
1932 | list () |
2260 | list () |
|
|
2261 | PROTOTYPE: |
1933 | PPCODE: |
2262 | PPCODE: |
1934 | { |
2263 | { |
1935 | struct coro *coro; |
2264 | struct coro *coro; |
1936 | for (coro = coro_first; coro; coro = coro->next) |
2265 | for (coro = coro_first; coro; coro = coro->next) |
1937 | if (coro->hv) |
2266 | if (coro->hv) |
… | |
… | |
1996 | RETVAL = boolSV (coro->flags & ix); |
2325 | RETVAL = boolSV (coro->flags & ix); |
1997 | OUTPUT: |
2326 | OUTPUT: |
1998 | RETVAL |
2327 | RETVAL |
1999 | |
2328 | |
2000 | void |
2329 | void |
|
|
2330 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
|
|
2331 | PROTOTYPE: $;$ |
|
|
2332 | CODE: |
|
|
2333 | SvREFCNT_dec (self->throw); |
|
|
2334 | self->throw = SvOK (throw) ? newSVsv (throw) : 0; |
|
|
2335 | |
|
|
2336 | void |
2001 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
2337 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
|
|
2338 | PROTOTYPE: $;$ |
|
|
2339 | C_ARGS: aTHX_ coro, flags |
2002 | |
2340 | |
2003 | SV * |
2341 | SV * |
2004 | has_cctx (Coro::State coro) |
2342 | has_cctx (Coro::State coro) |
2005 | PROTOTYPE: $ |
2343 | PROTOTYPE: $ |
2006 | CODE: |
2344 | CODE: |
… | |
… | |
2030 | OUTPUT: |
2368 | OUTPUT: |
2031 | RETVAL |
2369 | RETVAL |
2032 | |
2370 | |
2033 | void |
2371 | void |
2034 | force_cctx () |
2372 | force_cctx () |
|
|
2373 | PROTOTYPE: |
2035 | CODE: |
2374 | CODE: |
2036 | struct coro *coro = SvSTATE (coro_current); |
2375 | struct coro *coro = SvSTATE (coro_current); |
2037 | coro->cctx->idle_sp = 0; |
2376 | coro->cctx->idle_sp = 0; |
2038 | |
2377 | |
2039 | void |
2378 | void |
… | |
… | |
2041 | PROTOTYPE: $ |
2380 | PROTOTYPE: $ |
2042 | ALIAS: |
2381 | ALIAS: |
2043 | swap_defav = 1 |
2382 | swap_defav = 1 |
2044 | CODE: |
2383 | CODE: |
2045 | if (!self->slot) |
2384 | if (!self->slot) |
2046 | croak ("cannot swap state with coroutine that has no saved state"); |
2385 | croak ("cannot swap state with coroutine that has no saved state,"); |
2047 | else |
2386 | else |
2048 | { |
2387 | { |
2049 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
2388 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
2050 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
2389 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
2051 | |
2390 | |
… | |
… | |
2076 | |
2415 | |
2077 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
2416 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
2078 | coro_ready[i] = newAV (); |
2417 | coro_ready[i] = newAV (); |
2079 | |
2418 | |
2080 | { |
2419 | { |
2081 | SV *sv = perl_get_sv ("Coro::API", TRUE); |
2420 | SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
2082 | perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */ |
|
|
2083 | |
2421 | |
2084 | coroapi.schedule = api_schedule; |
2422 | coroapi.schedule = api_schedule; |
2085 | coroapi.cede = api_cede; |
2423 | coroapi.cede = api_cede; |
2086 | coroapi.cede_notself = api_cede_notself; |
2424 | coroapi.cede_notself = api_cede_notself; |
2087 | coroapi.ready = api_ready; |
2425 | coroapi.ready = api_ready; |
2088 | coroapi.is_ready = api_is_ready; |
2426 | coroapi.is_ready = api_is_ready; |
2089 | coroapi.nready = &coro_nready; |
2427 | coroapi.nready = coro_nready; |
2090 | coroapi.current = coro_current; |
2428 | coroapi.current = coro_current; |
2091 | |
2429 | |
2092 | GCoroAPI = &coroapi; |
2430 | GCoroAPI = &coroapi; |
2093 | sv_setiv (sv, (IV)&coroapi); |
2431 | sv_setiv (sv, (IV)&coroapi); |
2094 | SvREADONLY_on (sv); |
2432 | SvREADONLY_on (sv); |
2095 | } |
2433 | } |
2096 | } |
2434 | } |
|
|
2435 | |
|
|
2436 | void |
|
|
2437 | schedule (...) |
|
|
2438 | CODE: |
|
|
2439 | api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); |
|
|
2440 | |
|
|
2441 | void |
|
|
2442 | cede (...) |
|
|
2443 | CODE: |
|
|
2444 | api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); |
|
|
2445 | |
|
|
2446 | void |
|
|
2447 | cede_notself (...) |
|
|
2448 | CODE: |
|
|
2449 | api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); |
2097 | |
2450 | |
2098 | void |
2451 | void |
2099 | _set_current (SV *current) |
2452 | _set_current (SV *current) |
2100 | PROTOTYPE: $ |
2453 | PROTOTYPE: $ |
2101 | CODE: |
2454 | CODE: |
… | |
… | |
2104 | |
2457 | |
2105 | void |
2458 | void |
2106 | _set_readyhook (SV *hook) |
2459 | _set_readyhook (SV *hook) |
2107 | PROTOTYPE: $ |
2460 | PROTOTYPE: $ |
2108 | CODE: |
2461 | CODE: |
2109 | LOCK; |
|
|
2110 | SvREFCNT_dec (coro_readyhook); |
2462 | SvREFCNT_dec (coro_readyhook); |
2111 | coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
2463 | coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
2112 | UNLOCK; |
|
|
2113 | |
2464 | |
2114 | int |
2465 | int |
2115 | prio (Coro::State coro, int newprio = 0) |
2466 | prio (Coro::State coro, int newprio = 0) |
|
|
2467 | PROTOTYPE: $;$ |
2116 | ALIAS: |
2468 | ALIAS: |
2117 | nice = 1 |
2469 | nice = 1 |
2118 | CODE: |
2470 | CODE: |
2119 | { |
2471 | { |
2120 | RETVAL = coro->prio; |
2472 | RETVAL = coro->prio; |
… | |
… | |
2135 | |
2487 | |
2136 | SV * |
2488 | SV * |
2137 | ready (SV *self) |
2489 | ready (SV *self) |
2138 | PROTOTYPE: $ |
2490 | PROTOTYPE: $ |
2139 | CODE: |
2491 | CODE: |
2140 | RETVAL = boolSV (api_ready (self)); |
2492 | RETVAL = boolSV (api_ready (aTHX_ self)); |
2141 | OUTPUT: |
2493 | OUTPUT: |
2142 | RETVAL |
2494 | RETVAL |
2143 | |
2495 | |
2144 | int |
2496 | int |
2145 | nready (...) |
2497 | nready (...) |
… | |
… | |
2147 | CODE: |
2499 | CODE: |
2148 | RETVAL = coro_nready; |
2500 | RETVAL = coro_nready; |
2149 | OUTPUT: |
2501 | OUTPUT: |
2150 | RETVAL |
2502 | RETVAL |
2151 | |
2503 | |
2152 | void |
|
|
2153 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
|
|
2154 | PROTOTYPE: $;$ |
|
|
2155 | CODE: |
|
|
2156 | SvREFCNT_dec (self->throw); |
|
|
2157 | self->throw = SvOK (throw) ? newSVsv (throw) : 0; |
|
|
2158 | |
|
|
2159 | # for async_pool speedup |
2504 | # for async_pool speedup |
2160 | void |
2505 | void |
2161 | _pool_1 (SV *cb) |
2506 | _pool_1 (SV *cb) |
2162 | CODE: |
2507 | CODE: |
2163 | { |
2508 | { |
… | |
… | |
2191 | { |
2536 | { |
2192 | av_fill (defav, len - 1); |
2537 | av_fill (defav, len - 1); |
2193 | for (i = 0; i < len; ++i) |
2538 | for (i = 0; i < len; ++i) |
2194 | av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); |
2539 | av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); |
2195 | } |
2540 | } |
2196 | |
|
|
2197 | SvREFCNT_dec (invoke); |
|
|
2198 | } |
2541 | } |
2199 | |
2542 | |
2200 | void |
2543 | void |
2201 | _pool_2 (SV *cb) |
2544 | _pool_2 (SV *cb) |
2202 | CODE: |
2545 | CODE: |
… | |
… | |
2222 | newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
2565 | newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
2223 | |
2566 | |
2224 | coro->prio = 0; |
2567 | coro->prio = 0; |
2225 | |
2568 | |
2226 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
2569 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
2227 | api_trace (coro_current, 0); |
2570 | api_trace (aTHX_ coro_current, 0); |
2228 | |
2571 | |
2229 | av_push (av_async_pool, newSVsv (coro_current)); |
2572 | av_push (av_async_pool, newSVsv (coro_current)); |
2230 | } |
2573 | } |
2231 | |
|
|
2232 | #if 0 |
|
|
2233 | |
|
|
2234 | void |
|
|
2235 | _generator_call (...) |
|
|
2236 | PROTOTYPE: @ |
|
|
2237 | PPCODE: |
|
|
2238 | fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr); |
|
|
2239 | xxxx |
|
|
2240 | abort (); |
|
|
2241 | |
|
|
2242 | SV * |
|
|
2243 | gensub (SV *sub, ...) |
|
|
2244 | PROTOTYPE: &;@ |
|
|
2245 | CODE: |
|
|
2246 | { |
|
|
2247 | struct coro *coro; |
|
|
2248 | MAGIC *mg; |
|
|
2249 | CV *xcv; |
|
|
2250 | CV *ncv = (CV *)newSV_type (SVt_PVCV); |
|
|
2251 | int i; |
|
|
2252 | |
|
|
2253 | CvGV (ncv) = CvGV (cv); |
|
|
2254 | CvFILE (ncv) = CvFILE (cv); |
|
|
2255 | |
|
|
2256 | Newz (0, coro, 1, struct coro); |
|
|
2257 | coro->args = newAV (); |
|
|
2258 | coro->flags = CF_NEW; |
|
|
2259 | |
|
|
2260 | av_extend (coro->args, items - 1); |
|
|
2261 | for (i = 1; i < items; i++) |
|
|
2262 | av_push (coro->args, newSVsv (ST (i))); |
|
|
2263 | |
|
|
2264 | CvISXSUB_on (ncv); |
|
|
2265 | CvXSUBANY (ncv).any_ptr = (void *)coro; |
|
|
2266 | |
|
|
2267 | xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV)); |
|
|
2268 | |
|
|
2269 | CvXSUB (ncv) = CvXSUB (xcv); |
|
|
2270 | CvANON_on (ncv); |
|
|
2271 | |
|
|
2272 | mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0); |
|
|
2273 | RETVAL = newRV_noinc ((SV *)ncv); |
|
|
2274 | } |
|
|
2275 | OUTPUT: |
|
|
2276 | RETVAL |
|
|
2277 | |
|
|
2278 | #endif |
|
|
2279 | |
2574 | |
2280 | |
2575 | |
2281 | MODULE = Coro::State PACKAGE = Coro::AIO |
2576 | MODULE = Coro::State PACKAGE = Coro::AIO |
2282 | |
2577 | |
2283 | void |
2578 | void |
2284 | _get_state (SV *self) |
2579 | _get_state (SV *self) |
|
|
2580 | PROTOTYPE: $ |
2285 | PPCODE: |
2581 | PPCODE: |
2286 | { |
2582 | { |
2287 | AV *defav = GvAV (PL_defgv); |
2583 | AV *defav = GvAV (PL_defgv); |
2288 | AV *av = newAV (); |
2584 | AV *av = newAV (); |
2289 | int i; |
2585 | int i; |
… | |
… | |
2304 | |
2600 | |
2305 | av_push (av, data_sv); |
2601 | av_push (av, data_sv); |
2306 | |
2602 | |
2307 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
2603 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
2308 | |
2604 | |
2309 | api_ready (self); |
2605 | api_ready (aTHX_ self); |
2310 | } |
2606 | } |
2311 | |
2607 | |
2312 | void |
2608 | void |
2313 | _set_state (SV *state) |
2609 | _set_state (SV *state) |
2314 | PROTOTYPE: $ |
2610 | PROTOTYPE: $ |
… | |
… | |
2332 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
2628 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
2333 | |
2629 | |
2334 | BOOT: |
2630 | BOOT: |
2335 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
2631 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
2336 | |
2632 | |
2337 | SV * |
2633 | void |
2338 | _schedule (...) |
2634 | _schedule (...) |
2339 | PROTOTYPE: @ |
|
|
2340 | CODE: |
2635 | CODE: |
2341 | { |
2636 | { |
2342 | static int incede; |
2637 | static int incede; |
2343 | |
2638 | |
2344 | api_cede_notself (); |
2639 | api_cede_notself (aTHX); |
2345 | |
2640 | |
2346 | ++incede; |
2641 | ++incede; |
2347 | while (coro_nready >= incede && api_cede ()) |
2642 | while (coro_nready >= incede && api_cede (aTHX)) |
2348 | ; |
2643 | ; |
2349 | |
2644 | |
2350 | sv_setsv (sv_activity, &PL_sv_undef); |
2645 | sv_setsv (sv_activity, &PL_sv_undef); |
2351 | if (coro_nready >= incede) |
2646 | if (coro_nready >= incede) |
2352 | { |
2647 | { |
… | |
… | |
2362 | |
2657 | |
2363 | MODULE = Coro::State PACKAGE = PerlIO::cede |
2658 | MODULE = Coro::State PACKAGE = PerlIO::cede |
2364 | |
2659 | |
2365 | BOOT: |
2660 | BOOT: |
2366 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
2661 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
|
|
2662 | |
|
|
2663 | MODULE = Coro::State PACKAGE = Coro::Semaphore |
|
|
2664 | |
|
|
2665 | SV * |
|
|
2666 | new (SV *klass, SV *count_ = 0) |
|
|
2667 | CODE: |
|
|
2668 | { |
|
|
2669 | /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
|
|
2670 | AV *av = newAV (); |
|
|
2671 | av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); |
|
|
2672 | RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); |
|
|
2673 | } |
|
|
2674 | OUTPUT: |
|
|
2675 | RETVAL |
|
|
2676 | |
|
|
2677 | SV * |
|
|
2678 | count (SV *self) |
|
|
2679 | CODE: |
|
|
2680 | RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); |
|
|
2681 | OUTPUT: |
|
|
2682 | RETVAL |
|
|
2683 | |
|
|
2684 | void |
|
|
2685 | up (SV *self, int adjust = 1) |
|
|
2686 | ALIAS: |
|
|
2687 | adjust = 1 |
|
|
2688 | CODE: |
|
|
2689 | coro_semaphore_adjust ((AV *)SvRV (self), ix ? adjust : 1); |
|
|
2690 | |
|
|
2691 | void |
|
|
2692 | down (SV *self) |
|
|
2693 | CODE: |
|
|
2694 | api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); |
|
|
2695 | |
|
|
2696 | void |
|
|
2697 | try (SV *self) |
|
|
2698 | PPCODE: |
|
|
2699 | { |
|
|
2700 | AV *av = (AV *)SvRV (self); |
|
|
2701 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2702 | IV count = SvIVX (count_sv); |
|
|
2703 | |
|
|
2704 | if (count > 0) |
|
|
2705 | { |
|
|
2706 | --count; |
|
|
2707 | SvIVX (count_sv) = count; |
|
|
2708 | XSRETURN_YES; |
|
|
2709 | } |
|
|
2710 | else |
|
|
2711 | XSRETURN_NO; |
|
|
2712 | } |
|
|
2713 | |
|
|
2714 | void |
|
|
2715 | waiters (SV *self) |
|
|
2716 | CODE: |
|
|
2717 | { |
|
|
2718 | AV *av = (AV *)SvRV (self); |
|
|
2719 | |
|
|
2720 | if (GIMME_V == G_SCALAR) |
|
|
2721 | XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); |
|
|
2722 | else |
|
|
2723 | { |
|
|
2724 | int i; |
|
|
2725 | EXTEND (SP, AvFILLp (av) + 1 - 1); |
|
|
2726 | for (i = 1; i <= AvFILLp (av); ++i) |
|
|
2727 | PUSHs (newSVsv (AvARRAY (av)[i])); |
|
|
2728 | } |
|
|
2729 | } |
|
|
2730 | |