… | |
… | |
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 | |
… | |
… | |
183 | static JMPENV *main_top_env; |
183 | static JMPENV *main_top_env; |
184 | static HV *coro_state_stash, *coro_stash; |
184 | static HV *coro_state_stash, *coro_stash; |
185 | static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
185 | static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
186 | static volatile struct coro *transfer_next; |
186 | static volatile struct coro *transfer_next; |
187 | |
187 | |
188 | struct transfer_args |
|
|
189 | { |
|
|
190 | struct coro *prev, *next; |
|
|
191 | }; |
|
|
192 | |
|
|
193 | static GV *irsgv; /* $/ */ |
188 | static GV *irsgv; /* $/ */ |
194 | static GV *stdoutgv; /* *STDOUT */ |
189 | static GV *stdoutgv; /* *STDOUT */ |
195 | static SV *rv_diehook; |
190 | static SV *rv_diehook; |
196 | static SV *rv_warnhook; |
191 | static SV *rv_warnhook; |
197 | static HV *hv_sig; /* %SIG */ |
192 | static HV *hv_sig; /* %SIG */ |
… | |
… | |
215 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
210 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
216 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
211 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
217 | }; |
212 | }; |
218 | |
213 | |
219 | /* this is a structure representing a c-level coroutine */ |
214 | /* this is a structure representing a c-level coroutine */ |
220 | typedef struct coro_cctx { |
215 | typedef struct coro_cctx |
|
|
216 | { |
221 | struct coro_cctx *next; |
217 | struct coro_cctx *next; |
222 | |
218 | |
223 | /* the stack */ |
219 | /* the stack */ |
224 | void *sptr; |
220 | void *sptr; |
225 | size_t ssize; |
221 | size_t ssize; |
… | |
… | |
243 | CF_NEW = 0x0004, /* has never been switched to */ |
239 | CF_NEW = 0x0004, /* has never been switched to */ |
244 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
240 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
245 | }; |
241 | }; |
246 | |
242 | |
247 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
243 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
248 | typedef struct { |
244 | typedef struct |
|
|
245 | { |
249 | SV *defsv; |
246 | SV *defsv; |
250 | AV *defav; |
247 | AV *defav; |
251 | SV *errsv; |
248 | SV *errsv; |
252 | SV *irsgv; |
249 | SV *irsgv; |
253 | #define VAR(name,type) type name; |
250 | #define VAR(name,type) type name; |
… | |
… | |
257 | |
254 | |
258 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
255 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
259 | |
256 | |
260 | /* this is a structure representing a perl-level coroutine */ |
257 | /* this is a structure representing a perl-level coroutine */ |
261 | struct coro { |
258 | struct coro { |
262 | /* the c coroutine allocated to this perl coroutine, if any */ |
259 | /* the C coroutine allocated to this perl coroutine, if any */ |
263 | coro_cctx *cctx; |
260 | coro_cctx *cctx; |
264 | |
261 | |
265 | /* process data */ |
262 | /* process data */ |
|
|
263 | struct CoroSLF slf_frame; /* saved slf frame */ |
266 | AV *mainstack; |
264 | AV *mainstack; |
267 | perl_slots *slot; /* basically the saved sp */ |
265 | perl_slots *slot; /* basically the saved sp */ |
268 | |
266 | |
269 | AV *args; /* data associated with this coroutine (initial args) */ |
267 | AV *args; /* data associated with this coroutine (initial args) */ |
270 | int refcnt; /* coroutines are refcounted, yes */ |
268 | int refcnt; /* coroutines are refcounted, yes */ |
… | |
… | |
285 | struct coro *next, *prev; |
283 | struct coro *next, *prev; |
286 | }; |
284 | }; |
287 | |
285 | |
288 | typedef struct coro *Coro__State; |
286 | typedef struct coro *Coro__State; |
289 | typedef struct coro *Coro__State_or_hashref; |
287 | typedef struct coro *Coro__State_or_hashref; |
|
|
288 | |
|
|
289 | static struct CoroSLF slf_frame; /* the current slf frame */ |
290 | |
290 | |
291 | /** Coro ********************************************************************/ |
291 | /** Coro ********************************************************************/ |
292 | |
292 | |
293 | #define PRIO_MAX 3 |
293 | #define PRIO_MAX 3 |
294 | #define PRIO_HIGH 1 |
294 | #define PRIO_HIGH 1 |
… | |
… | |
299 | |
299 | |
300 | /* for Coro.pm */ |
300 | /* for Coro.pm */ |
301 | static SV *coro_current; |
301 | static SV *coro_current; |
302 | static SV *coro_readyhook; |
302 | static SV *coro_readyhook; |
303 | static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
303 | static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
304 | static int coro_nready; |
|
|
305 | static struct coro *coro_first; |
304 | static struct coro *coro_first; |
|
|
305 | #define coro_nready coroapi.nready |
306 | |
306 | |
307 | /** lowlevel stuff **********************************************************/ |
307 | /** lowlevel stuff **********************************************************/ |
308 | |
308 | |
309 | static SV * |
309 | static SV * |
310 | coro_get_sv (pTHX_ const char *name, int create) |
310 | coro_get_sv (pTHX_ const char *name, int create) |
… | |
… | |
413 | : 0 |
413 | : 0 |
414 | |
414 | |
415 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
415 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
416 | #define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) |
416 | #define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) |
417 | |
417 | |
418 | static struct coro * |
418 | INLINE struct coro * |
419 | SvSTATE_ (pTHX_ SV *coro) |
419 | SvSTATE_ (pTHX_ SV *coro) |
420 | { |
420 | { |
421 | HV *stash; |
421 | HV *stash; |
422 | MAGIC *mg; |
422 | MAGIC *mg; |
423 | |
423 | |
… | |
… | |
514 | CvPADLIST (cv) = (AV *)POPs; |
514 | CvPADLIST (cv) = (AV *)POPs; |
515 | } |
515 | } |
516 | |
516 | |
517 | PUTBACK; |
517 | PUTBACK; |
518 | } |
518 | } |
|
|
519 | |
|
|
520 | slf_frame = c->slf_frame; |
519 | } |
521 | } |
520 | |
522 | |
521 | static void |
523 | static void |
522 | save_perl (pTHX_ Coro__State c) |
524 | save_perl (pTHX_ Coro__State c) |
523 | { |
525 | { |
|
|
526 | c->slf_frame = slf_frame; |
|
|
527 | |
524 | { |
528 | { |
525 | dSP; |
529 | dSP; |
526 | I32 cxix = cxstack_ix; |
530 | I32 cxix = cxstack_ix; |
527 | PERL_CONTEXT *ccstk = cxstack; |
531 | PERL_CONTEXT *ccstk = cxstack; |
528 | PERL_SI *top_si = PL_curstackinfo; |
532 | PERL_SI *top_si = PL_curstackinfo; |
… | |
… | |
595 | #undef VAR |
599 | #undef VAR |
596 | } |
600 | } |
597 | } |
601 | } |
598 | |
602 | |
599 | /* |
603 | /* |
600 | * allocate various perl stacks. This is an exact copy |
604 | * allocate various perl stacks. This is almost an exact copy |
601 | * of perl.c:init_stacks, except that it uses less memory |
605 | * of perl.c:init_stacks, except that it uses less memory |
602 | * on the (sometimes correct) assumption that coroutines do |
606 | * on the (sometimes correct) assumption that coroutines do |
603 | * not usually need a lot of stackspace. |
607 | * not usually need a lot of stackspace. |
604 | */ |
608 | */ |
605 | #if CORO_PREFER_PERL_FUNCTIONS |
609 | #if CORO_PREFER_PERL_FUNCTIONS |
… | |
… | |
807 | |
811 | |
808 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
812 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
809 | } |
813 | } |
810 | |
814 | |
811 | static void |
815 | static void |
|
|
816 | prepare_nop (aTHX_ struct coro_transfer_args *ta) |
|
|
817 | { |
|
|
818 | /* kind of mega-hacky, but works */ |
|
|
819 | ta->next = ta->prev = (struct coro *)ta; |
|
|
820 | } |
|
|
821 | |
|
|
822 | static int |
|
|
823 | slf_check_nop (aTHX) |
|
|
824 | { |
|
|
825 | return 0; |
|
|
826 | } |
|
|
827 | |
|
|
828 | static void |
812 | coro_setup (pTHX_ struct coro *coro) |
829 | coro_setup (pTHX_ struct coro *coro) |
813 | { |
830 | { |
814 | /* |
831 | /* |
815 | * emulate part of the perl startup here. |
832 | * emulate part of the perl startup here. |
816 | */ |
833 | */ |
… | |
… | |
855 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
872 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
856 | SPAGAIN; |
873 | SPAGAIN; |
857 | } |
874 | } |
858 | |
875 | |
859 | /* this newly created coroutine might be run on an existing cctx which most |
876 | /* this newly created coroutine might be run on an existing cctx which most |
860 | * likely was suspended in set_stacklevel, called from entersub. |
877 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
861 | * set_stacklevl doesn't do anything on return, but entersub does LEAVE, |
|
|
862 | * so we ENTER here for symmetry. |
|
|
863 | */ |
878 | */ |
864 | ENTER; |
879 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
|
|
880 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
865 | } |
881 | } |
866 | |
882 | |
867 | static void |
883 | static void |
868 | coro_destruct (pTHX_ struct coro *coro) |
884 | coro_destruct (pTHX_ struct coro *coro) |
869 | { |
885 | { |
… | |
… | |
898 | SvREFCNT_dec (coro->throw); |
914 | SvREFCNT_dec (coro->throw); |
899 | |
915 | |
900 | coro_destruct_stacks (aTHX); |
916 | coro_destruct_stacks (aTHX); |
901 | } |
917 | } |
902 | |
918 | |
903 | static void |
919 | INLINE void |
904 | free_coro_mortal (pTHX) |
920 | free_coro_mortal (pTHX) |
905 | { |
921 | { |
906 | if (expect_true (coro_mortal)) |
922 | if (expect_true (coro_mortal)) |
907 | { |
923 | { |
908 | SvREFCNT_dec (coro_mortal); |
924 | SvREFCNT_dec (coro_mortal); |
… | |
… | |
1033 | TAINT_NOT; |
1049 | TAINT_NOT; |
1034 | return 0; |
1050 | return 0; |
1035 | } |
1051 | } |
1036 | |
1052 | |
1037 | static void |
1053 | static void |
1038 | prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) |
1054 | prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) |
1039 | { |
1055 | { |
1040 | ta->prev = (struct coro *)cctx; |
1056 | ta->prev = (struct coro *)cctx; |
1041 | ta->next = 0; |
1057 | ta->next = 0; |
1042 | } |
1058 | } |
1043 | |
1059 | |
… | |
… | |
1068 | PL_op = (OP *)&myop; |
1084 | PL_op = (OP *)&myop; |
1069 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
1085 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
1070 | SPAGAIN; |
1086 | SPAGAIN; |
1071 | } |
1087 | } |
1072 | |
1088 | |
1073 | /* the tail of transfer: execute stuff we can onyl do afetr a transfer */ |
1089 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
1074 | static void |
1090 | INLINE void |
1075 | transfer_tail (void) |
1091 | transfer_tail (pTHX) |
1076 | { |
1092 | { |
1077 | struct coro *next = (struct coro *)transfer_next; |
1093 | struct coro *next = (struct coro *)transfer_next; |
1078 | transfer_next = 0; //D for temporary assertion in transfer |
1094 | assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */ |
1079 | assert (("FATAL ERROR: internal error 1067 in Coro module, please report", next));//D |
1095 | assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next)); |
1080 | |
1096 | |
1081 | free_coro_mortal (aTHX); |
1097 | free_coro_mortal (aTHX); |
1082 | UNLOCK; |
1098 | UNLOCK; |
1083 | |
1099 | |
1084 | if (expect_false (next->throw)) |
1100 | if (expect_false (next->throw)) |
… | |
… | |
1103 | # endif |
1119 | # endif |
1104 | #endif |
1120 | #endif |
1105 | { |
1121 | { |
1106 | dTHX; |
1122 | dTHX; |
1107 | |
1123 | |
1108 | /* entersub called ENTER, but we never 'returned', undo that here */ |
1124 | /* normally we would need to skip the entersub here */ |
1109 | LEAVE; |
1125 | /* not doing so will re-execute it, which is exactly what we want */ |
1110 | |
|
|
1111 | /* we now skip the entersub that did lead to transfer() */ |
|
|
1112 | PL_op = PL_op->op_next; |
1126 | /* PL_nop = PL_nop->op_next */ |
1113 | |
1127 | |
1114 | /* inject a fake subroutine call to cctx_init */ |
1128 | /* inject a fake subroutine call to cctx_init */ |
1115 | cctx_prepare (aTHX_ (coro_cctx *)arg); |
1129 | cctx_prepare (aTHX_ (coro_cctx *)arg); |
1116 | |
1130 | |
1117 | /* cctx_run is the alternative tail of transfer() */ |
1131 | /* cctx_run is the alternative tail of transfer() */ |
|
|
1132 | /* TODO: throwing an exception here might be deadly, VERIFY */ |
1118 | transfer_tail (); |
1133 | transfer_tail (aTHX); |
1119 | |
1134 | |
1120 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
1135 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
1121 | PL_restartop = PL_op; |
1136 | PL_restartop = PL_op; |
1122 | perl_run (PL_curinterp); |
1137 | perl_run (PL_curinterp); |
1123 | |
1138 | |
… | |
… | |
1173 | /* mmap supposedly does allocate-on-write for us */ |
1188 | /* mmap supposedly does allocate-on-write for us */ |
1174 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
1189 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
1175 | |
1190 | |
1176 | if (cctx->sptr != (void *)-1) |
1191 | if (cctx->sptr != (void *)-1) |
1177 | { |
1192 | { |
1178 | # if CORO_STACKGUARD |
1193 | #if CORO_STACKGUARD |
1179 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
1194 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
1180 | # endif |
1195 | #endif |
1181 | stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
1196 | stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
1182 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
1197 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
1183 | cctx->flags |= CC_MAPPED; |
1198 | cctx->flags |= CC_MAPPED; |
1184 | } |
1199 | } |
1185 | else |
1200 | else |
1186 | #endif |
1201 | #endif |
1187 | { |
1202 | { |
1188 | cctx->ssize = cctx_stacksize * (long)sizeof (long); |
1203 | cctx->ssize = cctx_stacksize * (long)sizeof (long); |
1189 | New (0, cctx->sptr, cctx_stacksize, long); |
1204 | New (0, cctx->sptr, cctx_stacksize, long); |
1190 | |
1205 | |
1191 | if (!cctx->sptr) |
1206 | if (!cctx->sptr) |
1192 | { |
1207 | { |
1193 | perror ("FATAL: unable to allocate stack for coroutine"); |
1208 | perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
1194 | _exit (EXIT_FAILURE); |
1209 | _exit (EXIT_FAILURE); |
1195 | } |
1210 | } |
1196 | |
1211 | |
1197 | stack_start = cctx->sptr; |
1212 | stack_start = cctx->sptr; |
1198 | stack_size = cctx->ssize; |
1213 | stack_size = cctx->ssize; |
1199 | } |
1214 | } |
1200 | |
1215 | |
1201 | REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
1216 | #if CORO_USE_VALGRIND |
|
|
1217 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
|
|
1218 | #endif |
|
|
1219 | |
1202 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
1220 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
1203 | |
1221 | |
1204 | return cctx; |
1222 | return cctx; |
1205 | } |
1223 | } |
1206 | |
1224 | |
… | |
… | |
1214 | coro_destroy (&cctx->cctx); |
1232 | coro_destroy (&cctx->cctx); |
1215 | |
1233 | |
1216 | /* coro_transfer creates new, empty cctx's */ |
1234 | /* coro_transfer creates new, empty cctx's */ |
1217 | if (cctx->sptr) |
1235 | if (cctx->sptr) |
1218 | { |
1236 | { |
1219 | #if CORO_USE_VALGRIND |
1237 | #if CORO_USE_VALGRIND |
1220 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
1238 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
1221 | #endif |
1239 | #endif |
1222 | |
1240 | |
1223 | #if HAVE_MMAP |
1241 | #if HAVE_MMAP |
1224 | if (cctx->flags & CC_MAPPED) |
1242 | if (cctx->flags & CC_MAPPED) |
1225 | munmap (cctx->sptr, cctx->ssize); |
1243 | munmap (cctx->sptr, cctx->ssize); |
1226 | else |
1244 | else |
… | |
… | |
1253 | } |
1271 | } |
1254 | |
1272 | |
1255 | static void |
1273 | static void |
1256 | cctx_put (coro_cctx *cctx) |
1274 | cctx_put (coro_cctx *cctx) |
1257 | { |
1275 | { |
1258 | assert (("cctx_put called on non-initialised cctx", cctx->sptr)); |
1276 | assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
1259 | |
1277 | |
1260 | /* free another cctx if overlimit */ |
1278 | /* free another cctx if overlimit */ |
1261 | if (expect_false (cctx_idle >= cctx_max_idle)) |
1279 | if (expect_false (cctx_idle >= cctx_max_idle)) |
1262 | { |
1280 | { |
1263 | coro_cctx *first = cctx_first; |
1281 | coro_cctx *first = cctx_first; |
… | |
… | |
1278 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
1296 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
1279 | { |
1297 | { |
1280 | if (expect_true (prev != next)) |
1298 | if (expect_true (prev != next)) |
1281 | { |
1299 | { |
1282 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
1300 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
1283 | croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); |
1301 | croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); |
1284 | |
1302 | |
1285 | if (expect_false (next->flags & CF_RUNNING)) |
1303 | if (expect_false (next->flags & CF_RUNNING)) |
1286 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
1304 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); |
1287 | |
1305 | |
1288 | if (expect_false (next->flags & CF_DESTROYED)) |
1306 | if (expect_false (next->flags & CF_DESTROYED)) |
1289 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
1307 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); |
1290 | |
1308 | |
1291 | #if !PERL_VERSION_ATLEAST (5,10,0) |
1309 | #if !PERL_VERSION_ATLEAST (5,10,0) |
1292 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
1310 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
1293 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); |
1311 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
1294 | #endif |
1312 | #endif |
1295 | } |
1313 | } |
1296 | } |
1314 | } |
1297 | |
1315 | |
1298 | /* always use the TRANSFER macro */ |
1316 | /* always use the TRANSFER macro */ |
… | |
… | |
1302 | dSTACKLEVEL; |
1320 | dSTACKLEVEL; |
1303 | |
1321 | |
1304 | /* sometimes transfer is only called to set idle_sp */ |
1322 | /* sometimes transfer is only called to set idle_sp */ |
1305 | if (expect_false (!next)) |
1323 | if (expect_false (!next)) |
1306 | { |
1324 | { |
1307 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
1325 | ((coro_cctx *)prev)->idle_sp = stacklevel; |
1308 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1326 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
1309 | } |
1327 | } |
1310 | else if (expect_true (prev != next)) |
1328 | else if (expect_true (prev != next)) |
1311 | { |
1329 | { |
1312 | coro_cctx *prev__cctx; |
1330 | coro_cctx *prev__cctx; |
… | |
… | |
1337 | else |
1355 | else |
1338 | load_perl (aTHX_ next); |
1356 | load_perl (aTHX_ next); |
1339 | |
1357 | |
1340 | prev__cctx = prev->cctx; |
1358 | prev__cctx = prev->cctx; |
1341 | |
1359 | |
1342 | /* possibly "free" the cctx */ |
1360 | /* possibly untie and reuse the cctx */ |
1343 | if (expect_true ( |
1361 | if (expect_true ( |
1344 | prev__cctx->idle_sp == STACKLEVEL |
1362 | prev__cctx->idle_sp == stacklevel |
1345 | && !(prev__cctx->flags & CC_TRACE) |
1363 | && !(prev__cctx->flags & CC_TRACE) |
1346 | && !force_cctx |
1364 | && !force_cctx |
1347 | )) |
1365 | )) |
1348 | { |
1366 | { |
1349 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
1367 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
1350 | assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
1368 | assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); |
1351 | |
1369 | |
1352 | prev->cctx = 0; |
1370 | prev->cctx = 0; |
1353 | |
1371 | |
1354 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
1372 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
1355 | /* without this the next cctx_get might destroy the prev__cctx while still in use */ |
1373 | /* without this the next cctx_get might destroy the prev__cctx while still in use */ |
… | |
… | |
1363 | ++next->usecount; |
1381 | ++next->usecount; |
1364 | |
1382 | |
1365 | if (expect_true (!next->cctx)) |
1383 | if (expect_true (!next->cctx)) |
1366 | next->cctx = cctx_get (aTHX); |
1384 | next->cctx = cctx_get (aTHX); |
1367 | |
1385 | |
1368 | assert (("FATAL ERROR: internal error 1352 in Coro, please report", !transfer_next));//D |
1386 | assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); |
1369 | transfer_next = next; |
1387 | transfer_next = next; |
1370 | |
1388 | |
1371 | if (expect_false (prev__cctx != next->cctx)) |
1389 | if (expect_false (prev__cctx != next->cctx)) |
1372 | { |
1390 | { |
1373 | prev__cctx->top_env = PL_top_env; |
1391 | prev__cctx->top_env = PL_top_env; |
1374 | PL_top_env = next->cctx->top_env; |
1392 | PL_top_env = next->cctx->top_env; |
1375 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
1393 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
1376 | } |
1394 | } |
1377 | |
1395 | |
1378 | transfer_tail (); |
1396 | transfer_tail (aTHX); |
1379 | } |
1397 | } |
1380 | } |
1398 | } |
1381 | |
1399 | |
1382 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
1400 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
1383 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
1401 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
… | |
… | |
1405 | |
1423 | |
1406 | if (coro->mainstack && coro->mainstack != main_mainstack) |
1424 | if (coro->mainstack && coro->mainstack != main_mainstack) |
1407 | { |
1425 | { |
1408 | struct coro temp; |
1426 | struct coro temp; |
1409 | |
1427 | |
1410 | if (coro->flags & CF_RUNNING) |
1428 | assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); |
1411 | croak ("FATAL: tried to destroy currently running coroutine"); |
|
|
1412 | |
1429 | |
1413 | save_perl (aTHX_ &temp); |
1430 | save_perl (aTHX_ &temp); |
1414 | load_perl (aTHX_ coro); |
1431 | load_perl (aTHX_ coro); |
1415 | |
1432 | |
1416 | coro_destruct (aTHX_ coro); |
1433 | coro_destruct (aTHX_ coro); |
… | |
… | |
1467 | # define MGf_DUP 0 |
1484 | # define MGf_DUP 0 |
1468 | #endif |
1485 | #endif |
1469 | }; |
1486 | }; |
1470 | |
1487 | |
1471 | static void |
1488 | static void |
1472 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
1489 | prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
1473 | { |
1490 | { |
1474 | ta->prev = SvSTATE (prev_sv); |
1491 | ta->prev = SvSTATE (prev_sv); |
1475 | ta->next = SvSTATE (next_sv); |
1492 | ta->next = SvSTATE (next_sv); |
1476 | TRANSFER_CHECK (*ta); |
1493 | TRANSFER_CHECK (*ta); |
1477 | } |
1494 | } |
1478 | |
1495 | |
1479 | static void |
1496 | static void |
1480 | api_transfer (SV *prev_sv, SV *next_sv) |
1497 | api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
1481 | { |
1498 | { |
1482 | dTHX; |
|
|
1483 | struct transfer_args ta; |
1499 | struct coro_transfer_args ta; |
1484 | |
1500 | |
1485 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1501 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1486 | TRANSFER (ta, 1); |
1502 | TRANSFER (ta, 1); |
1487 | } |
1503 | } |
1488 | |
1504 | |
… | |
… | |
1505 | |
1521 | |
1506 | return 0; |
1522 | return 0; |
1507 | } |
1523 | } |
1508 | |
1524 | |
1509 | static int |
1525 | static int |
1510 | api_ready (SV *coro_sv) |
1526 | api_ready (pTHX_ SV *coro_sv) |
1511 | { |
1527 | { |
1512 | dTHX; |
|
|
1513 | struct coro *coro; |
1528 | struct coro *coro; |
1514 | SV *sv_hook; |
1529 | SV *sv_hook; |
1515 | void (*xs_hook)(void); |
1530 | void (*xs_hook)(void); |
1516 | |
1531 | |
1517 | if (SvROK (coro_sv)) |
1532 | if (SvROK (coro_sv)) |
… | |
… | |
1555 | |
1570 | |
1556 | return 1; |
1571 | return 1; |
1557 | } |
1572 | } |
1558 | |
1573 | |
1559 | static int |
1574 | static int |
1560 | api_is_ready (SV *coro_sv) |
1575 | api_is_ready (pTHX_ SV *coro_sv) |
1561 | { |
1576 | { |
1562 | dTHX; |
|
|
1563 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1577 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1564 | } |
1578 | } |
1565 | |
1579 | |
1566 | static void |
1580 | INLINE void |
1567 | prepare_schedule (pTHX_ struct transfer_args *ta) |
1581 | prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
1568 | { |
1582 | { |
1569 | SV *prev_sv, *next_sv; |
1583 | SV *prev_sv, *next_sv; |
1570 | |
1584 | |
1571 | for (;;) |
1585 | for (;;) |
1572 | { |
1586 | { |
… | |
… | |
1610 | |
1624 | |
1611 | /* free this only after the transfer */ |
1625 | /* free this only after the transfer */ |
1612 | prev_sv = SvRV (coro_current); |
1626 | prev_sv = SvRV (coro_current); |
1613 | ta->prev = SvSTATE (prev_sv); |
1627 | ta->prev = SvSTATE (prev_sv); |
1614 | TRANSFER_CHECK (*ta); |
1628 | TRANSFER_CHECK (*ta); |
1615 | assert (ta->next->flags & CF_READY); |
1629 | assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); |
1616 | ta->next->flags &= ~CF_READY; |
1630 | ta->next->flags &= ~CF_READY; |
1617 | SvRV_set (coro_current, next_sv); |
1631 | SvRV_set (coro_current, next_sv); |
1618 | |
1632 | |
1619 | LOCK; |
1633 | LOCK; |
1620 | free_coro_mortal (aTHX); |
1634 | free_coro_mortal (aTHX); |
1621 | coro_mortal = prev_sv; |
1635 | coro_mortal = prev_sv; |
1622 | UNLOCK; |
1636 | UNLOCK; |
1623 | } |
1637 | } |
1624 | |
1638 | |
1625 | static void |
1639 | INLINE void |
1626 | prepare_cede (pTHX_ struct transfer_args *ta) |
1640 | prepare_cede (pTHX_ struct coro_transfer_args *ta) |
1627 | { |
1641 | { |
1628 | api_ready (coro_current); |
1642 | api_ready (aTHX_ coro_current); |
1629 | prepare_schedule (aTHX_ ta); |
1643 | prepare_schedule (aTHX_ ta); |
1630 | } |
1644 | } |
1631 | |
1645 | |
|
|
1646 | INLINE void |
|
|
1647 | prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
|
|
1648 | { |
|
|
1649 | SV *prev = SvRV (coro_current); |
|
|
1650 | |
|
|
1651 | if (coro_nready) |
|
|
1652 | { |
|
|
1653 | prepare_schedule (aTHX_ ta); |
|
|
1654 | api_ready (aTHX_ prev); |
|
|
1655 | } |
|
|
1656 | else |
|
|
1657 | prepare_nop (aTHX_ ta); |
|
|
1658 | } |
|
|
1659 | |
|
|
1660 | static void |
|
|
1661 | api_schedule (pTHX) |
|
|
1662 | { |
|
|
1663 | struct coro_transfer_args ta; |
|
|
1664 | |
|
|
1665 | prepare_schedule (aTHX_ &ta); |
|
|
1666 | TRANSFER (ta, 1); |
|
|
1667 | } |
|
|
1668 | |
1632 | static int |
1669 | static int |
1633 | prepare_cede_notself (pTHX_ struct transfer_args *ta) |
1670 | api_cede (pTHX) |
1634 | { |
1671 | { |
1635 | if (coro_nready) |
1672 | struct coro_transfer_args ta; |
1636 | { |
1673 | |
1637 | SV *prev = SvRV (coro_current); |
|
|
1638 | prepare_schedule (aTHX_ ta); |
1674 | prepare_cede (aTHX_ &ta); |
1639 | api_ready (prev); |
1675 | |
|
|
1676 | if (expect_true (ta.prev != ta.next)) |
|
|
1677 | { |
|
|
1678 | TRANSFER (ta, 1); |
1640 | return 1; |
1679 | return 1; |
1641 | } |
1680 | } |
1642 | else |
1681 | else |
1643 | return 0; |
1682 | return 0; |
1644 | } |
1683 | } |
1645 | |
1684 | |
1646 | static void |
|
|
1647 | api_schedule (void) |
|
|
1648 | { |
|
|
1649 | dTHX; |
|
|
1650 | struct transfer_args ta; |
|
|
1651 | |
|
|
1652 | prepare_schedule (aTHX_ &ta); |
|
|
1653 | TRANSFER (ta, 1); |
|
|
1654 | } |
|
|
1655 | |
|
|
1656 | static int |
1685 | static int |
1657 | api_cede (void) |
1686 | api_cede_notself (pTHX) |
1658 | { |
1687 | { |
1659 | dTHX; |
1688 | if (coro_nready) |
|
|
1689 | { |
1660 | struct transfer_args ta; |
1690 | struct coro_transfer_args ta; |
1661 | |
1691 | |
1662 | prepare_cede (aTHX_ &ta); |
1692 | prepare_cede_notself (aTHX_ &ta); |
1663 | |
|
|
1664 | if (expect_true (ta.prev != ta.next)) |
|
|
1665 | { |
|
|
1666 | TRANSFER (ta, 1); |
1693 | TRANSFER (ta, 1); |
1667 | return 1; |
1694 | return 1; |
1668 | } |
1695 | } |
1669 | else |
1696 | else |
1670 | return 0; |
1697 | return 0; |
1671 | } |
1698 | } |
1672 | |
1699 | |
1673 | static int |
1700 | static void |
1674 | api_cede_notself (void) |
|
|
1675 | { |
|
|
1676 | dTHX; |
|
|
1677 | struct transfer_args ta; |
|
|
1678 | |
|
|
1679 | if (prepare_cede_notself (aTHX_ &ta)) |
|
|
1680 | { |
|
|
1681 | TRANSFER (ta, 1); |
|
|
1682 | return 1; |
|
|
1683 | } |
|
|
1684 | else |
|
|
1685 | return 0; |
|
|
1686 | } |
|
|
1687 | |
|
|
1688 | static void |
|
|
1689 | api_trace (SV *coro_sv, int flags) |
1701 | api_trace (pTHX_ SV *coro_sv, int flags) |
1690 | { |
1702 | { |
1691 | dTHX; |
|
|
1692 | struct coro *coro = SvSTATE (coro_sv); |
1703 | struct coro *coro = SvSTATE (coro_sv); |
1693 | |
1704 | |
1694 | if (flags & CC_TRACE) |
1705 | if (flags & CC_TRACE) |
1695 | { |
1706 | { |
1696 | if (!coro->cctx) |
1707 | if (!coro->cctx) |
1697 | coro->cctx = cctx_new_run (); |
1708 | coro->cctx = cctx_new_run (); |
1698 | else if (!(coro->cctx->flags & CC_TRACE)) |
1709 | else if (!(coro->cctx->flags & CC_TRACE)) |
1699 | croak ("cannot enable tracing on coroutine with custom stack"); |
1710 | croak ("cannot enable tracing on coroutine with custom stack,"); |
1700 | |
1711 | |
1701 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
1712 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
1702 | } |
1713 | } |
1703 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
1714 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
1704 | { |
1715 | { |
… | |
… | |
1763 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
1774 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
1764 | double now = nvtime (); |
1775 | double now = nvtime (); |
1765 | |
1776 | |
1766 | if (now >= self->next) |
1777 | if (now >= self->next) |
1767 | { |
1778 | { |
1768 | api_cede (); |
1779 | api_cede (aTHX); |
1769 | self->next = now + self->every; |
1780 | self->next = now + self->every; |
1770 | } |
1781 | } |
1771 | |
1782 | |
1772 | return PerlIOBuf_flush (aTHX_ f); |
1783 | return PerlIOBuf_flush (aTHX_ f); |
1773 | } |
1784 | } |
… | |
… | |
1802 | PerlIOBuf_get_ptr, |
1813 | PerlIOBuf_get_ptr, |
1803 | PerlIOBuf_get_cnt, |
1814 | PerlIOBuf_get_cnt, |
1804 | PerlIOBuf_set_ptrcnt, |
1815 | PerlIOBuf_set_ptrcnt, |
1805 | }; |
1816 | }; |
1806 | |
1817 | |
|
|
1818 | /*****************************************************************************/ |
|
|
1819 | |
|
|
1820 | static const CV *slf_cv; /* for quick consistency check */ |
|
|
1821 | |
|
|
1822 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
1823 | static SV *slf_arg0; |
|
|
1824 | static SV *slf_arg1; |
|
|
1825 | static SV *slf_arg2; |
|
|
1826 | |
|
|
1827 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
1828 | /* recreate the stack frame as perl will on following calls */ |
|
|
1829 | /* since entersub cleared the stack */ |
|
|
1830 | static OP * |
|
|
1831 | pp_restore (pTHX) |
|
|
1832 | { |
|
|
1833 | dSP; |
|
|
1834 | |
|
|
1835 | PUSHMARK (SP); |
|
|
1836 | |
|
|
1837 | EXTEND (SP, 3); |
|
|
1838 | if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); |
|
|
1839 | if (slf_arg1) PUSHs (sv_2mortal (slf_arg1)); |
|
|
1840 | if (slf_arg2) PUSHs (sv_2mortal (slf_arg2)); |
|
|
1841 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
1842 | |
|
|
1843 | RETURNOP (slf_restore.op_first); |
|
|
1844 | } |
|
|
1845 | |
|
|
1846 | static void |
|
|
1847 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
|
|
1848 | { |
|
|
1849 | prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data); |
|
|
1850 | } |
|
|
1851 | |
|
|
1852 | static void |
|
|
1853 | slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) |
|
|
1854 | { |
|
|
1855 | assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); |
|
|
1856 | |
|
|
1857 | frame->prepare = slf_prepare_set_stacklevel; |
|
|
1858 | frame->check = slf_check_nop; |
|
|
1859 | frame->data = (void *)SvIV (arg [0]); |
|
|
1860 | } |
|
|
1861 | |
|
|
1862 | static void |
|
|
1863 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
1864 | { |
|
|
1865 | SV **arg = (SV **)slf_frame.data; |
|
|
1866 | |
|
|
1867 | prepare_transfer (ta, arg [0], arg [1]); |
|
|
1868 | } |
|
|
1869 | |
|
|
1870 | static void |
|
|
1871 | slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items) |
|
|
1872 | { |
|
|
1873 | if (items != 2) |
|
|
1874 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
|
|
1875 | |
|
|
1876 | frame->prepare = slf_prepare_transfer; |
|
|
1877 | frame->check = slf_check_nop; |
|
|
1878 | frame->data = (void *)arg; /* let's hope it will stay valid */ |
|
|
1879 | } |
|
|
1880 | |
|
|
1881 | static void |
|
|
1882 | slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items) |
|
|
1883 | { |
|
|
1884 | frame->prepare = prepare_schedule; |
|
|
1885 | frame->check = slf_check_nop; |
|
|
1886 | } |
|
|
1887 | |
|
|
1888 | static void |
|
|
1889 | slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items) |
|
|
1890 | { |
|
|
1891 | frame->prepare = prepare_cede; |
|
|
1892 | frame->check = slf_check_nop; |
|
|
1893 | } |
|
|
1894 | |
|
|
1895 | static void |
|
|
1896 | slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items) |
|
|
1897 | { |
|
|
1898 | frame->prepare = prepare_cede_notself; |
|
|
1899 | frame->check = slf_check_nop; |
|
|
1900 | } |
|
|
1901 | |
|
|
1902 | /* we hijack an hopefully unused CV flag for our purposes */ |
|
|
1903 | #define CVf_SLF 0x4000 |
|
|
1904 | |
|
|
1905 | /* |
|
|
1906 | * these not obviously related functions are all rolled into one |
|
|
1907 | * function to increase chances that they all will call transfer with the same |
|
|
1908 | * stack offset |
|
|
1909 | * SLF stands for "schedule-like-function". |
|
|
1910 | */ |
|
|
1911 | static OP * |
|
|
1912 | pp_slf (pTHX) |
|
|
1913 | { |
|
|
1914 | I32 checkmark; /* mark SP to see how many elements check has pushed */ |
|
|
1915 | |
|
|
1916 | /* set up the slf frame, unless it has already been set-up */ |
|
|
1917 | /* the latter happens when a new coro has been started */ |
|
|
1918 | /* or when a new cctx was attached to an existing coroutine */ |
|
|
1919 | if (expect_true (!slf_frame.prepare)) |
|
|
1920 | { |
|
|
1921 | /* first iteration */ |
|
|
1922 | dSP; |
|
|
1923 | SV **arg = PL_stack_base + TOPMARK + 1; |
|
|
1924 | int items = SP - arg; /* args without function object */ |
|
|
1925 | SV *gv = *sp; |
|
|
1926 | |
|
|
1927 | /* do a quick consistency check on the "function" object, and if it isn't */ |
|
|
1928 | /* for us, divert to the real entersub */ |
|
|
1929 | if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
|
|
1930 | return PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1931 | |
|
|
1932 | /* pop args */ |
|
|
1933 | SP = PL_stack_base + POPMARK; |
|
|
1934 | |
|
|
1935 | if (!(PL_op->op_flags & OPf_STACKED)) |
|
|
1936 | { |
|
|
1937 | /* ampersand-form of call, use @_ instead of stack */ |
|
|
1938 | AV *av = GvAV (PL_defgv); |
|
|
1939 | arg = AvARRAY (av); |
|
|
1940 | items = AvFILLp (av) + 1; |
|
|
1941 | } |
|
|
1942 | |
|
|
1943 | PUTBACK; |
|
|
1944 | |
|
|
1945 | ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items); |
|
|
1946 | } |
|
|
1947 | |
|
|
1948 | /* now interpret the slf_frame */ |
|
|
1949 | /* we use a callback system not to make the code needlessly */ |
|
|
1950 | /* complicated, but so we can run multiple perl coros from one cctx */ |
|
|
1951 | |
|
|
1952 | do |
|
|
1953 | { |
|
|
1954 | struct coro_transfer_args ta; |
|
|
1955 | |
|
|
1956 | slf_frame.prepare (aTHX_ &ta); |
|
|
1957 | TRANSFER (ta, 0); |
|
|
1958 | |
|
|
1959 | checkmark = PL_stack_sp - PL_stack_base; |
|
|
1960 | } |
|
|
1961 | while (slf_frame.check (aTHX_ &slf_frame)); |
|
|
1962 | |
|
|
1963 | { |
|
|
1964 | dSP; |
|
|
1965 | SV **bot = PL_stack_base + checkmark; |
|
|
1966 | int gimme = GIMME_V; |
|
|
1967 | |
|
|
1968 | slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */ |
|
|
1969 | |
|
|
1970 | /* make sure we put something on the stack in scalar context */ |
|
|
1971 | if (gimme == G_SCALAR) |
|
|
1972 | { |
|
|
1973 | if (sp == bot) |
|
|
1974 | XPUSHs (&PL_sv_undef); |
|
|
1975 | |
|
|
1976 | SP = bot + 1; |
|
|
1977 | } |
|
|
1978 | |
|
|
1979 | PUTBACK; |
|
|
1980 | } |
|
|
1981 | |
|
|
1982 | return NORMAL; |
|
|
1983 | } |
|
|
1984 | |
|
|
1985 | static void |
|
|
1986 | api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) |
|
|
1987 | { |
|
|
1988 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
|
|
1989 | |
|
|
1990 | if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
|
|
1991 | && PL_op->op_ppaddr != pp_slf) |
|
|
1992 | croak ("FATAL: Coro SLF calls can only be made normally, not via goto or other means, caught"); |
|
|
1993 | |
|
|
1994 | if (items > 3) |
|
|
1995 | croak ("Coro only supports up to three arguments to SLF functions currently, caught"); |
|
|
1996 | |
|
|
1997 | CvFLAGS (cv) |= CVf_SLF; |
|
|
1998 | CvXSUBANY (cv).any_ptr = (void *)init_cb; |
|
|
1999 | slf_cv = cv; |
|
|
2000 | |
|
|
2001 | /* we patch the op, and then re-run the whole call */ |
|
|
2002 | /* we have to put the same argument on the stack for this to work */ |
|
|
2003 | /* and this will be done by pp_restore */ |
|
|
2004 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
2005 | slf_restore.op_type = OP_NULL; |
|
|
2006 | slf_restore.op_ppaddr = pp_restore; |
|
|
2007 | slf_restore.op_first = PL_op; |
|
|
2008 | |
|
|
2009 | slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; |
|
|
2010 | slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; |
|
|
2011 | slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0; |
|
|
2012 | |
|
|
2013 | PL_op->op_ppaddr = pp_slf; |
|
|
2014 | |
|
|
2015 | PL_op = (OP *)&slf_restore; |
|
|
2016 | } |
1807 | |
2017 | |
1808 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
2018 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
1809 | |
2019 | |
1810 | PROTOTYPES: DISABLE |
2020 | PROTOTYPES: DISABLE |
1811 | |
2021 | |
… | |
… | |
1841 | main_top_env = PL_top_env; |
2051 | main_top_env = PL_top_env; |
1842 | |
2052 | |
1843 | while (main_top_env->je_prev) |
2053 | while (main_top_env->je_prev) |
1844 | main_top_env = main_top_env->je_prev; |
2054 | main_top_env = main_top_env->je_prev; |
1845 | |
2055 | |
1846 | coroapi.ver = CORO_API_VERSION; |
2056 | coroapi.ver = CORO_API_VERSION; |
1847 | coroapi.rev = CORO_API_REVISION; |
2057 | coroapi.rev = CORO_API_REVISION; |
|
|
2058 | |
1848 | coroapi.transfer = api_transfer; |
2059 | coroapi.transfer = api_transfer; |
|
|
2060 | |
|
|
2061 | coroapi.sv_state = SvSTATE_; |
|
|
2062 | coroapi.execute_slf = api_execute_slf; |
|
|
2063 | coroapi.prepare_nop = prepare_nop; |
|
|
2064 | coroapi.prepare_schedule = prepare_schedule; |
|
|
2065 | coroapi.prepare_cede = prepare_cede; |
|
|
2066 | coroapi.prepare_cede_notself = prepare_cede_notself; |
1849 | |
2067 | |
1850 | { |
2068 | { |
1851 | SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
2069 | SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
1852 | |
2070 | |
1853 | if (!svp) croak ("Time::HiRes is required"); |
2071 | if (!svp) croak ("Time::HiRes is required"); |
… | |
… | |
1886 | av_push (coro->args, newSVsv (ST (i))); |
2104 | av_push (coro->args, newSVsv (ST (i))); |
1887 | } |
2105 | } |
1888 | OUTPUT: |
2106 | OUTPUT: |
1889 | RETVAL |
2107 | RETVAL |
1890 | |
2108 | |
1891 | # these not obviously related functions are all rolled into the same xs |
|
|
1892 | # function to increase chances that they all will call transfer with the same |
|
|
1893 | # stack offset |
|
|
1894 | void |
2109 | void |
1895 | _set_stacklevel (...) |
2110 | _set_stacklevel (...) |
1896 | ALIAS: |
2111 | CODE: |
1897 | Coro::State::transfer = 1 |
2112 | api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items); |
1898 | Coro::schedule = 2 |
|
|
1899 | Coro::cede = 3 |
|
|
1900 | Coro::cede_notself = 4 |
|
|
1901 | CODE: |
|
|
1902 | { |
|
|
1903 | struct transfer_args ta; |
|
|
1904 | |
2113 | |
1905 | PUTBACK; |
2114 | void |
1906 | switch (ix) |
2115 | transfer (...) |
1907 | { |
2116 | CODE: |
1908 | case 0: |
2117 | api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); |
1909 | prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (ST (0))); |
|
|
1910 | break; |
|
|
1911 | |
|
|
1912 | case 1: |
|
|
1913 | if (items != 2) |
|
|
1914 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items); |
|
|
1915 | |
|
|
1916 | prepare_transfer (aTHX_ &ta, ST (0), ST (1)); |
|
|
1917 | break; |
|
|
1918 | |
|
|
1919 | case 2: |
|
|
1920 | prepare_schedule (aTHX_ &ta); |
|
|
1921 | break; |
|
|
1922 | |
|
|
1923 | case 3: |
|
|
1924 | prepare_cede (aTHX_ &ta); |
|
|
1925 | break; |
|
|
1926 | |
|
|
1927 | case 4: |
|
|
1928 | if (!prepare_cede_notself (aTHX_ &ta)) |
|
|
1929 | XSRETURN_EMPTY; |
|
|
1930 | |
|
|
1931 | break; |
|
|
1932 | } |
|
|
1933 | SPAGAIN; |
|
|
1934 | |
|
|
1935 | BARRIER; |
|
|
1936 | PUTBACK; |
|
|
1937 | TRANSFER (ta, 0); |
|
|
1938 | SPAGAIN; /* might be the sp of a different coroutine now */ |
|
|
1939 | /* be extra careful not to ever do anything after TRANSFER */ |
|
|
1940 | } |
|
|
1941 | |
2118 | |
1942 | bool |
2119 | bool |
1943 | _destroy (SV *coro_sv) |
2120 | _destroy (SV *coro_sv) |
1944 | CODE: |
2121 | CODE: |
1945 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
2122 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
… | |
… | |
2063 | SvREFCNT_dec (self->throw); |
2240 | SvREFCNT_dec (self->throw); |
2064 | self->throw = SvOK (throw) ? newSVsv (throw) : 0; |
2241 | self->throw = SvOK (throw) ? newSVsv (throw) : 0; |
2065 | |
2242 | |
2066 | void |
2243 | void |
2067 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
2244 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
|
|
2245 | C_ARGS: aTHX_ coro, flags |
2068 | |
2246 | |
2069 | SV * |
2247 | SV * |
2070 | has_cctx (Coro::State coro) |
2248 | has_cctx (Coro::State coro) |
2071 | PROTOTYPE: $ |
2249 | PROTOTYPE: $ |
2072 | CODE: |
2250 | CODE: |
… | |
… | |
2107 | PROTOTYPE: $ |
2285 | PROTOTYPE: $ |
2108 | ALIAS: |
2286 | ALIAS: |
2109 | swap_defav = 1 |
2287 | swap_defav = 1 |
2110 | CODE: |
2288 | CODE: |
2111 | if (!self->slot) |
2289 | if (!self->slot) |
2112 | croak ("cannot swap state with coroutine that has no saved state"); |
2290 | croak ("cannot swap state with coroutine that has no saved state,"); |
2113 | else |
2291 | else |
2114 | { |
2292 | { |
2115 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
2293 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
2116 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
2294 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
2117 | |
2295 | |
… | |
… | |
2142 | |
2320 | |
2143 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
2321 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
2144 | coro_ready[i] = newAV (); |
2322 | coro_ready[i] = newAV (); |
2145 | |
2323 | |
2146 | { |
2324 | { |
2147 | SV *sv = perl_get_sv ("Coro::API", TRUE); |
2325 | SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
2148 | perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */ |
|
|
2149 | |
2326 | |
2150 | coroapi.schedule = api_schedule; |
2327 | coroapi.schedule = api_schedule; |
2151 | coroapi.cede = api_cede; |
2328 | coroapi.cede = api_cede; |
2152 | coroapi.cede_notself = api_cede_notself; |
2329 | coroapi.cede_notself = api_cede_notself; |
2153 | coroapi.ready = api_ready; |
2330 | coroapi.ready = api_ready; |
2154 | coroapi.is_ready = api_is_ready; |
2331 | coroapi.is_ready = api_is_ready; |
2155 | coroapi.nready = &coro_nready; |
2332 | coroapi.nready = coro_nready; |
2156 | coroapi.current = coro_current; |
2333 | coroapi.current = coro_current; |
2157 | |
2334 | |
2158 | GCoroAPI = &coroapi; |
2335 | GCoroAPI = &coroapi; |
2159 | sv_setiv (sv, (IV)&coroapi); |
2336 | sv_setiv (sv, (IV)&coroapi); |
2160 | SvREADONLY_on (sv); |
2337 | SvREADONLY_on (sv); |
2161 | } |
2338 | } |
2162 | } |
2339 | } |
|
|
2340 | |
|
|
2341 | void |
|
|
2342 | schedule (...) |
|
|
2343 | CODE: |
|
|
2344 | api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items); |
|
|
2345 | |
|
|
2346 | void |
|
|
2347 | cede (...) |
|
|
2348 | CODE: |
|
|
2349 | api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items); |
|
|
2350 | |
|
|
2351 | void |
|
|
2352 | cede_notself (...) |
|
|
2353 | CODE: |
|
|
2354 | api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items); |
2163 | |
2355 | |
2164 | void |
2356 | void |
2165 | _set_current (SV *current) |
2357 | _set_current (SV *current) |
2166 | PROTOTYPE: $ |
2358 | PROTOTYPE: $ |
2167 | CODE: |
2359 | CODE: |
… | |
… | |
2201 | |
2393 | |
2202 | SV * |
2394 | SV * |
2203 | ready (SV *self) |
2395 | ready (SV *self) |
2204 | PROTOTYPE: $ |
2396 | PROTOTYPE: $ |
2205 | CODE: |
2397 | CODE: |
2206 | RETVAL = boolSV (api_ready (self)); |
2398 | RETVAL = boolSV (api_ready (aTHX_ self)); |
2207 | OUTPUT: |
2399 | OUTPUT: |
2208 | RETVAL |
2400 | RETVAL |
2209 | |
2401 | |
2210 | int |
2402 | int |
2211 | nready (...) |
2403 | nready (...) |
… | |
… | |
2281 | newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
2473 | newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
2282 | |
2474 | |
2283 | coro->prio = 0; |
2475 | coro->prio = 0; |
2284 | |
2476 | |
2285 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
2477 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
2286 | api_trace (coro_current, 0); |
2478 | api_trace (aTHX_ coro_current, 0); |
2287 | |
2479 | |
2288 | av_push (av_async_pool, newSVsv (coro_current)); |
2480 | av_push (av_async_pool, newSVsv (coro_current)); |
2289 | } |
2481 | } |
2290 | |
2482 | |
2291 | #if 0 |
2483 | #if 0 |
… | |
… | |
2363 | |
2555 | |
2364 | av_push (av, data_sv); |
2556 | av_push (av, data_sv); |
2365 | |
2557 | |
2366 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
2558 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
2367 | |
2559 | |
2368 | api_ready (self); |
2560 | api_ready (aTHX_ self); |
2369 | } |
2561 | } |
2370 | |
2562 | |
2371 | void |
2563 | void |
2372 | _set_state (SV *state) |
2564 | _set_state (SV *state) |
2373 | PROTOTYPE: $ |
2565 | PROTOTYPE: $ |
… | |
… | |
2398 | PROTOTYPE: @ |
2590 | PROTOTYPE: @ |
2399 | CODE: |
2591 | CODE: |
2400 | { |
2592 | { |
2401 | static int incede; |
2593 | static int incede; |
2402 | |
2594 | |
2403 | api_cede_notself (); |
2595 | api_cede_notself (aTHX); |
2404 | |
2596 | |
2405 | ++incede; |
2597 | ++incede; |
2406 | while (coro_nready >= incede && api_cede ()) |
2598 | while (coro_nready >= incede && api_cede (aTHX)) |
2407 | ; |
2599 | ; |
2408 | |
2600 | |
2409 | sv_setsv (sv_activity, &PL_sv_undef); |
2601 | sv_setsv (sv_activity, &PL_sv_undef); |
2410 | if (coro_nready >= incede) |
2602 | if (coro_nready >= incede) |
2411 | { |
2603 | { |
… | |
… | |
2421 | |
2613 | |
2422 | MODULE = Coro::State PACKAGE = PerlIO::cede |
2614 | MODULE = Coro::State PACKAGE = PerlIO::cede |
2423 | |
2615 | |
2424 | BOOT: |
2616 | BOOT: |
2425 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
2617 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
|
|
2618 | |