1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
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5 | #include "patchlevel.h" |
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6 | |
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7 | #if PATCHLEVEL < 6 |
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8 | # ifndef PL_ppaddr |
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9 | # define PL_ppaddr ppaddr |
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10 | # endif |
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11 | # ifndef call_sv |
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12 | # define call_sv perl_call_sv |
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13 | # endif |
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14 | # ifndef get_sv |
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15 | # define get_sv perl_get_sv |
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16 | # endif |
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17 | # ifndef get_cv |
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18 | # define get_cv perl_get_cv |
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19 | # endif |
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20 | # ifndef IS_PADGV |
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21 | # define IS_PADGV(v) 0 |
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22 | # endif |
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23 | # ifndef IS_PADCONST |
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24 | # define IS_PADCONST(v) 0 |
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25 | # endif |
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26 | #endif |
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27 | |
5 | #include "libcoro/coro.c" |
28 | #include "libcoro/coro.c" |
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29 | |
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30 | #include <signal.h> |
6 | |
31 | |
7 | #ifdef HAVE_MMAP |
32 | #ifdef HAVE_MMAP |
8 | # include <unistd.h> |
33 | # include <unistd.h> |
9 | # include <sys/mman.h> |
34 | # include <sys/mman.h> |
10 | # ifndef MAP_ANON |
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11 | # ifdef MAP_ANONYMOUS |
35 | # ifndef MAP_ANONYMOUS |
12 | # define MAP_ANON MAP_ANONYMOUS |
36 | # ifdef MAP_ANON |
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37 | # define MAP_ANONYMOUS MAP_ANON |
13 | # else |
38 | # else |
14 | # undef HAVE_MMAP |
39 | # undef HAVE_MMAP |
15 | # endif |
40 | # endif |
16 | # endif |
41 | # endif |
17 | #endif |
42 | #endif |
18 | |
43 | |
19 | #define MAY_FLUSH /* increases codesize */ |
44 | #define MAY_FLUSH /* increases codesize and is rarely used */ |
20 | |
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21 | /* perl-related */ |
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22 | #define TRANSFER_SAVE_DEFAV 0x00000001 |
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23 | #define TRANSFER_SAVE_DEFSV 0x00000002 |
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24 | #define TRANSFER_SAVE_ERRSV 0x00000004 |
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25 | /* c-related */ |
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26 | #define TRANSFER_SAVE_CCTXT 0x00000008 |
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27 | #ifdef CORO_LAZY_STACK |
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28 | # define TRANSFER_LAZY_STACK 0x00000010 |
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29 | #else |
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30 | # define TRANSFER_LAZY_STACK 0x00000000 |
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31 | #endif |
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32 | |
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33 | #define TRANSFER_SAVE_ALL (TRANSFER_SAVE_DEFAV|TRANSFER_SAVE_DEFSV \ |
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34 | |TRANSFER_SAVE_ERRSV|TRANSFER_SAVE_CCTXT) |
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35 | |
45 | |
36 | #define SUB_INIT "Coro::State::initialize" |
46 | #define SUB_INIT "Coro::State::initialize" |
37 | #define UCORO_STATE "_coro_state" |
47 | #define UCORO_STATE "_coro_state" |
38 | |
48 | |
39 | /* The next macro should delcare a variable stacklevel that contains and approximation |
49 | /* The next macro should declare a variable stacklevel that contains and approximation |
40 | * to the current C stack pointer. It's property is that it changes with each call |
50 | * to the current C stack pointer. Its property is that it changes with each call |
41 | * and should be unique. */ |
51 | * and should be unique. */ |
42 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
52 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
43 | |
53 | |
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54 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
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55 | |
44 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
56 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
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57 | |
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58 | #include "CoroAPI.h" |
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59 | |
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60 | static struct CoroAPI coroapi; |
45 | |
61 | |
46 | /* this is actually not only the c stack but also c registers etc... */ |
62 | /* this is actually not only the c stack but also c registers etc... */ |
47 | typedef struct { |
63 | typedef struct { |
48 | int refcnt; /* pointer reference counter */ |
64 | int refcnt; /* pointer reference counter */ |
49 | int usecnt; /* shared by how many coroutines */ |
65 | int usecnt; /* shared by how many coroutines */ |
… | |
… | |
53 | |
69 | |
54 | void *sptr; |
70 | void *sptr; |
55 | long ssize; /* positive == mmap, otherwise malloc */ |
71 | long ssize; /* positive == mmap, otherwise malloc */ |
56 | } coro_stack; |
72 | } coro_stack; |
57 | |
73 | |
58 | static coro_stack main_stack = { 1, 0, 0 }; |
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59 | |
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60 | struct coro { |
74 | struct coro { |
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75 | /* the top-level JMPENV for each coroutine, needed to catch dies. */ |
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76 | JMPENV start_env; |
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77 | |
61 | /* the optional C context */ |
78 | /* the optional C context */ |
62 | coro_stack *stack; |
79 | coro_stack *stack; |
63 | void *cursp; |
80 | void *cursp; |
64 | int gencnt; |
81 | int gencnt; |
65 | |
82 | |
… | |
… | |
68 | SV *defsv; |
85 | SV *defsv; |
69 | SV *errsv; |
86 | SV *errsv; |
70 | |
87 | |
71 | /* saved global state not related to stacks */ |
88 | /* saved global state not related to stacks */ |
72 | U8 dowarn; |
89 | U8 dowarn; |
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90 | I32 in_eval; |
73 | |
91 | |
74 | /* the stacks and related info (callchain etc..) */ |
92 | /* the stacks and related info (callchain etc..) */ |
75 | PERL_SI *curstackinfo; |
93 | PERL_SI *curstackinfo; |
76 | AV *curstack; |
94 | AV *curstack; |
77 | AV *mainstack; |
95 | AV *mainstack; |
78 | SV **stack_sp; |
96 | SV **stack_sp; |
79 | OP *op; |
97 | OP *op; |
80 | SV **curpad; |
98 | SV **curpad; |
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99 | AV *comppad; |
81 | SV **stack_base; |
100 | SV **stack_base; |
82 | SV **stack_max; |
101 | SV **stack_max; |
83 | SV **tmps_stack; |
102 | SV **tmps_stack; |
84 | I32 tmps_floor; |
103 | I32 tmps_floor; |
85 | I32 tmps_ix; |
104 | I32 tmps_ix; |
… | |
… | |
95 | I32 savestack_max; |
114 | I32 savestack_max; |
96 | OP **retstack; |
115 | OP **retstack; |
97 | I32 retstack_ix; |
116 | I32 retstack_ix; |
98 | I32 retstack_max; |
117 | I32 retstack_max; |
99 | COP *curcop; |
118 | COP *curcop; |
100 | JMPENV start_env; |
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101 | JMPENV *top_env; |
119 | JMPENV *top_env; |
102 | |
120 | |
103 | /* data associated with this coroutine (initial args) */ |
121 | /* data associated with this coroutine (initial args) */ |
104 | AV *args; |
122 | AV *args; |
105 | }; |
123 | }; |
… | |
… | |
110 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
128 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
111 | static HV *coro_state_stash; |
129 | static HV *coro_state_stash; |
112 | static SV *ucoro_state_sv; |
130 | static SV *ucoro_state_sv; |
113 | static U32 ucoro_state_hash; |
131 | static U32 ucoro_state_hash; |
114 | static HV *padlist_cache; |
132 | static HV *padlist_cache; |
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133 | static SV *coro_mortal; /* will be freed after next transfer */ |
115 | |
134 | |
116 | /* mostly copied from op.c:cv_clone2 */ |
135 | /* mostly copied from op.c:cv_clone2 */ |
117 | STATIC AV * |
136 | STATIC AV * |
118 | clone_padlist (AV *protopadlist) |
137 | clone_padlist (AV *protopadlist) |
119 | { |
138 | { |
… | |
… | |
165 | sv = (SV *) newAV (); |
184 | sv = (SV *) newAV (); |
166 | else if (*name == '%') |
185 | else if (*name == '%') |
167 | sv = (SV *) newHV (); |
186 | sv = (SV *) newHV (); |
168 | else |
187 | else |
169 | sv = NEWSV (0, 0); |
188 | sv = NEWSV (0, 0); |
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189 | #ifdef SvPADBUSY |
170 | if (!SvPADBUSY (sv)) |
190 | if (!SvPADBUSY (sv)) |
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191 | #endif |
171 | SvPADMY_on (sv); |
192 | SvPADMY_on (sv); |
172 | npad[ix] = sv; |
193 | npad[ix] = sv; |
173 | } |
194 | } |
174 | } |
195 | } |
175 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
196 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
… | |
… | |
206 | |
227 | |
207 | return newpadlist; |
228 | return newpadlist; |
208 | } |
229 | } |
209 | |
230 | |
210 | #ifdef MAY_FLUSH |
231 | #ifdef MAY_FLUSH |
211 | STATIC AV * |
232 | STATIC void |
212 | free_padlist (AV *padlist) |
233 | free_padlist (AV *padlist) |
213 | { |
234 | { |
214 | /* may be during global destruction */ |
235 | /* may be during global destruction */ |
215 | if (SvREFCNT(padlist)) |
236 | if (SvREFCNT(padlist)) |
216 | { |
237 | { |
… | |
… | |
281 | #endif |
302 | #endif |
282 | |
303 | |
283 | #define SB do { |
304 | #define SB do { |
284 | #define SE } while (0) |
305 | #define SE } while (0) |
285 | |
306 | |
286 | #define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE |
307 | #define LOAD(state) load_state(aTHX_ (state)); |
287 | #define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE |
308 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
288 | |
309 | |
289 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
310 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
290 | |
311 | |
291 | static void |
312 | static void |
292 | load_state(pTHX_ Coro__State c) |
313 | load_state(pTHX_ Coro__State c) |
293 | { |
314 | { |
294 | PL_dowarn = c->dowarn; |
315 | PL_dowarn = c->dowarn; |
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316 | PL_in_eval = c->in_eval; |
295 | |
317 | |
296 | PL_curstackinfo = c->curstackinfo; |
318 | PL_curstackinfo = c->curstackinfo; |
297 | PL_curstack = c->curstack; |
319 | PL_curstack = c->curstack; |
298 | PL_mainstack = c->mainstack; |
320 | PL_mainstack = c->mainstack; |
299 | PL_stack_sp = c->stack_sp; |
321 | PL_stack_sp = c->stack_sp; |
300 | PL_op = c->op; |
322 | PL_op = c->op; |
301 | PL_curpad = c->curpad; |
323 | PL_curpad = c->curpad; |
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324 | PL_comppad = c->comppad; |
302 | PL_stack_base = c->stack_base; |
325 | PL_stack_base = c->stack_base; |
303 | PL_stack_max = c->stack_max; |
326 | PL_stack_max = c->stack_max; |
304 | PL_tmps_stack = c->tmps_stack; |
327 | PL_tmps_stack = c->tmps_stack; |
305 | PL_tmps_floor = c->tmps_floor; |
328 | PL_tmps_floor = c->tmps_floor; |
306 | PL_tmps_ix = c->tmps_ix; |
329 | PL_tmps_ix = c->tmps_ix; |
… | |
… | |
316 | PL_savestack_max = c->savestack_max; |
339 | PL_savestack_max = c->savestack_max; |
317 | PL_retstack = c->retstack; |
340 | PL_retstack = c->retstack; |
318 | PL_retstack_ix = c->retstack_ix; |
341 | PL_retstack_ix = c->retstack_ix; |
319 | PL_retstack_max = c->retstack_max; |
342 | PL_retstack_max = c->retstack_max; |
320 | PL_curcop = c->curcop; |
343 | PL_curcop = c->curcop; |
321 | PL_start_env = c->start_env; |
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322 | PL_top_env = c->top_env; |
344 | PL_top_env = c->top_env; |
323 | |
345 | |
324 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
346 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
325 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
347 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
326 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
348 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
… | |
… | |
366 | |
388 | |
367 | PUSHs (Nullsv); |
389 | PUSHs (Nullsv); |
368 | /* this loop was inspired by pp_caller */ |
390 | /* this loop was inspired by pp_caller */ |
369 | for (;;) |
391 | for (;;) |
370 | { |
392 | { |
371 | do |
393 | while (cxix >= 0) |
372 | { |
394 | { |
373 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
395 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
374 | |
396 | |
375 | if (CxTYPE(cx) == CXt_SUB) |
397 | if (CxTYPE(cx) == CXt_SUB) |
376 | { |
398 | { |
… | |
… | |
395 | PUSHs ((SV *)cv); |
417 | PUSHs ((SV *)cv); |
396 | |
418 | |
397 | get_padlist (cv); /* this is a monster */ |
419 | get_padlist (cv); /* this is a monster */ |
398 | } |
420 | } |
399 | } |
421 | } |
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422 | #ifdef CXt_FORMAT |
400 | else if (CxTYPE(cx) == CXt_FORMAT) |
423 | else if (CxTYPE(cx) == CXt_FORMAT) |
401 | { |
424 | { |
402 | /* I never used formats, so how should I know how these are implemented? */ |
425 | /* I never used formats, so how should I know how these are implemented? */ |
403 | /* my bold guess is as a simple, plain sub... */ |
426 | /* my bold guess is as a simple, plain sub... */ |
404 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
427 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
405 | } |
428 | } |
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429 | #endif |
406 | } |
430 | } |
407 | while (cxix >= 0); |
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408 | |
431 | |
409 | if (top_si->si_type == PERLSI_MAIN) |
432 | if (top_si->si_type == PERLSI_MAIN) |
410 | break; |
433 | break; |
411 | |
434 | |
412 | top_si = top_si->si_prev; |
435 | top_si = top_si->si_prev; |
… | |
… | |
419 | |
442 | |
420 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
443 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
421 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
444 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
422 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
445 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
423 | |
446 | |
424 | /* I have not the slightest idea of why av_reify is necessary */ |
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425 | /* but if it's missing the defav contents magically get replaced sometimes */ |
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426 | if (c->defav) |
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427 | av_reify (c->defav); |
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428 | |
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429 | c->dowarn = PL_dowarn; |
447 | c->dowarn = PL_dowarn; |
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448 | c->in_eval = PL_in_eval; |
430 | |
449 | |
431 | c->curstackinfo = PL_curstackinfo; |
450 | c->curstackinfo = PL_curstackinfo; |
432 | c->curstack = PL_curstack; |
451 | c->curstack = PL_curstack; |
433 | c->mainstack = PL_mainstack; |
452 | c->mainstack = PL_mainstack; |
434 | c->stack_sp = PL_stack_sp; |
453 | c->stack_sp = PL_stack_sp; |
435 | c->op = PL_op; |
454 | c->op = PL_op; |
436 | c->curpad = PL_curpad; |
455 | c->curpad = PL_curpad; |
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456 | c->comppad = PL_comppad; |
437 | c->stack_base = PL_stack_base; |
457 | c->stack_base = PL_stack_base; |
438 | c->stack_max = PL_stack_max; |
458 | c->stack_max = PL_stack_max; |
439 | c->tmps_stack = PL_tmps_stack; |
459 | c->tmps_stack = PL_tmps_stack; |
440 | c->tmps_floor = PL_tmps_floor; |
460 | c->tmps_floor = PL_tmps_floor; |
441 | c->tmps_ix = PL_tmps_ix; |
461 | c->tmps_ix = PL_tmps_ix; |
… | |
… | |
451 | c->savestack_max = PL_savestack_max; |
471 | c->savestack_max = PL_savestack_max; |
452 | c->retstack = PL_retstack; |
472 | c->retstack = PL_retstack; |
453 | c->retstack_ix = PL_retstack_ix; |
473 | c->retstack_ix = PL_retstack_ix; |
454 | c->retstack_max = PL_retstack_max; |
474 | c->retstack_max = PL_retstack_max; |
455 | c->curcop = PL_curcop; |
475 | c->curcop = PL_curcop; |
456 | c->start_env = PL_start_env; |
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457 | c->top_env = PL_top_env; |
476 | c->top_env = PL_top_env; |
458 | } |
477 | } |
459 | |
478 | |
460 | /* |
479 | /* |
461 | * allocate various perl stacks. This is an exact copy |
480 | * allocate various perl stacks. This is an exact copy |
… | |
… | |
482 | |
501 | |
483 | New(54,PL_markstack,16,I32); |
502 | New(54,PL_markstack,16,I32); |
484 | PL_markstack_ptr = PL_markstack; |
503 | PL_markstack_ptr = PL_markstack; |
485 | PL_markstack_max = PL_markstack + 16; |
504 | PL_markstack_max = PL_markstack + 16; |
486 | |
505 | |
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506 | #ifdef SET_MARK_OFFSET |
487 | SET_MARK_OFFSET; |
507 | SET_MARK_OFFSET; |
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508 | #endif |
488 | |
509 | |
489 | New(54,PL_scopestack,16,I32); |
510 | New(54,PL_scopestack,16,I32); |
490 | PL_scopestack_ix = 0; |
511 | PL_scopestack_ix = 0; |
491 | PL_scopestack_max = 16; |
512 | PL_scopestack_max = 16; |
492 | |
513 | |
… | |
… | |
499 | PL_retstack_max = 8; |
520 | PL_retstack_max = 8; |
500 | } |
521 | } |
501 | |
522 | |
502 | /* |
523 | /* |
503 | * destroy the stacks, the callchain etc... |
524 | * destroy the stacks, the callchain etc... |
504 | * still there is a memleak of 128 bytes... |
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505 | */ |
525 | */ |
506 | STATIC void |
526 | STATIC void |
507 | destroy_stacks(pTHX) |
527 | destroy_stacks(pTHX) |
508 | { |
528 | { |
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529 | if (!IN_DESTRUCT) |
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530 | { |
509 | /* is this ugly, I ask? */ |
531 | /* is this ugly, I ask? */ |
510 | while (PL_scopestack_ix) |
532 | while (PL_scopestack_ix) |
511 | LEAVE; |
533 | LEAVE; |
512 | |
534 | |
513 | /* sure it is, but more important: is it correct?? :/ */ |
535 | /* sure it is, but more important: is it correct?? :/ */ |
514 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
536 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
515 | FREETMPS; |
537 | FREETMPS; |
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538 | } |
516 | |
539 | |
517 | while (PL_curstackinfo->si_next) |
540 | while (PL_curstackinfo->si_next) |
518 | PL_curstackinfo = PL_curstackinfo->si_next; |
541 | PL_curstackinfo = PL_curstackinfo->si_next; |
519 | |
542 | |
520 | while (PL_curstackinfo) |
543 | while (PL_curstackinfo) |
… | |
… | |
525 | dSP; |
548 | dSP; |
526 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
549 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
527 | PUTBACK; /* possibly superfluous */ |
550 | PUTBACK; /* possibly superfluous */ |
528 | } |
551 | } |
529 | |
552 | |
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553 | if (!IN_DESTRUCT) |
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554 | { |
530 | dounwind(-1); |
555 | dounwind(-1); |
531 | |
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532 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
556 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
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557 | } |
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558 | |
533 | Safefree(PL_curstackinfo->si_cxstack); |
559 | Safefree(PL_curstackinfo->si_cxstack); |
534 | Safefree(PL_curstackinfo); |
560 | Safefree(PL_curstackinfo); |
535 | PL_curstackinfo = p; |
561 | PL_curstackinfo = p; |
536 | } |
562 | } |
537 | |
563 | |
… | |
… | |
552 | stack->refcnt = 1; |
578 | stack->refcnt = 1; |
553 | stack->usecnt = 1; |
579 | stack->usecnt = 1; |
554 | stack->gencnt = ctx->gencnt = 0; |
580 | stack->gencnt = ctx->gencnt = 0; |
555 | if (alloc) |
581 | if (alloc) |
556 | { |
582 | { |
557 | #ifdef HAVE_MMAP |
583 | #if HAVE_MMAP |
558 | stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write */ |
584 | stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ |
559 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0); |
585 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
560 | if (stack->sptr == (void *)-1) |
586 | if (stack->sptr == (void *)-1) |
561 | #endif |
587 | #endif |
562 | { |
588 | { |
563 | /*FIXME*//*D*//* reasonable stack size! */ |
589 | /*FIXME*//*D*//* reasonable stack size! */ |
564 | stack->ssize = -4096 * sizeof (long); |
590 | stack->ssize = -4096 * sizeof (long); |
… | |
… | |
584 | { |
610 | { |
585 | #ifdef HAVE_MMAP |
611 | #ifdef HAVE_MMAP |
586 | if (stack->ssize > 0 && stack->sptr) |
612 | if (stack->ssize > 0 && stack->sptr) |
587 | munmap (stack->sptr, stack->ssize); |
613 | munmap (stack->sptr, stack->ssize); |
588 | else |
614 | else |
589 | #else |
615 | #endif |
590 | Safefree (stack->sptr); |
616 | Safefree (stack->sptr); |
591 | #endif |
617 | |
592 | Safefree (stack); |
618 | Safefree (stack); |
593 | } |
619 | } |
594 | else if (ctx->gencnt == stack->gencnt) |
620 | else if (ctx->gencnt == stack->gencnt) |
595 | --stack->usecnt; |
621 | --stack->usecnt; |
596 | } |
622 | } |
… | |
… | |
605 | dSP; |
631 | dSP; |
606 | Coro__State ctx = (Coro__State)arg; |
632 | Coro__State ctx = (Coro__State)arg; |
607 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
633 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
608 | |
634 | |
609 | coro_init_stacks (aTHX); |
635 | coro_init_stacks (aTHX); |
610 | JMPENV_BOOTSTRAP; |
636 | /*PL_curcop = 0;*/ |
|
|
637 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
|
|
638 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
639 | GvAV (PL_defgv) = ctx->args; ctx->args = 0; |
|
|
640 | |
611 | SPAGAIN; |
641 | SPAGAIN; |
612 | |
|
|
613 | /*PL_curcop = 0;*/ |
|
|
614 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
615 | GvAV (PL_defgv) = ctx->args; |
|
|
616 | |
642 | |
617 | if (ctx->stack) |
643 | if (ctx->stack) |
618 | { |
644 | { |
619 | ctx->cursp = 0; |
645 | ctx->cursp = 0; |
620 | |
646 | |
621 | PUSHMARK(SP); |
647 | PUSHMARK(SP); |
622 | PUTBACK; |
648 | PUTBACK; |
623 | (void) call_sv (sub_init, G_VOID|G_NOARGS); |
649 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
650 | |
|
|
651 | if (SvTRUE (ERRSV)) |
|
|
652 | croak (NULL); |
|
|
653 | else |
624 | croak ("FATAL: CCTXT coroutine returned!"); |
654 | croak ("FATAL: CCTXT coroutine returned!"); |
625 | } |
655 | } |
626 | else |
656 | else |
627 | { |
657 | { |
628 | UNOP myop; |
658 | UNOP myop; |
629 | |
659 | |
… | |
… | |
641 | * that doesn't matter, though, since it is only |
671 | * that doesn't matter, though, since it is only |
642 | * pp_nextstate and we never return... |
672 | * pp_nextstate and we never return... |
643 | * ah yes, and I don't care anyways ;) |
673 | * ah yes, and I don't care anyways ;) |
644 | */ |
674 | */ |
645 | PUTBACK; |
675 | PUTBACK; |
646 | PL_op = pp_entersub(); |
676 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
647 | SPAGAIN; |
677 | SPAGAIN; |
648 | |
678 | |
649 | ENTER; /* necessary e.g. for dounwind */ |
679 | ENTER; /* necessary e.g. for dounwind */ |
650 | } |
680 | } |
651 | } |
681 | } |
… | |
… | |
655 | { |
685 | { |
656 | /* |
686 | /* |
657 | * this is a _very_ stripped down perl interpreter ;) |
687 | * this is a _very_ stripped down perl interpreter ;) |
658 | */ |
688 | */ |
659 | Coro__State ctx = (Coro__State)arg; |
689 | Coro__State ctx = (Coro__State)arg; |
|
|
690 | JMPENV coro_start_env; |
|
|
691 | |
|
|
692 | PL_top_env = &ctx->start_env; |
660 | |
693 | |
661 | ctx->cursp = 0; |
694 | ctx->cursp = 0; |
662 | PL_op = PL_op->op_next; |
695 | PL_op = PL_op->op_next; |
663 | CALLRUNOPS(aTHX); |
696 | CALLRUNOPS(aTHX); |
664 | /*NORETURN*/ |
697 | |
665 | abort (); |
698 | abort (); |
666 | } |
699 | } |
667 | |
700 | |
668 | STATIC void |
701 | STATIC void |
669 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
702 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
670 | { |
703 | { |
671 | dSP; |
|
|
672 | dSTACKLEVEL; |
704 | dSTACKLEVEL; |
|
|
705 | static struct coro *xnext; |
673 | |
706 | |
674 | if (prev != next) |
707 | if (prev != next) |
675 | { |
708 | { |
|
|
709 | xnext = next; |
|
|
710 | |
676 | if (next->mainstack) |
711 | if (next->mainstack) |
677 | { |
712 | { |
678 | SAVE (prev, flags); |
713 | SAVE (prev, flags); |
679 | LOAD (next); |
714 | LOAD (next); |
680 | |
715 | |
… | |
… | |
703 | continue_coro, (void *)next, |
738 | continue_coro, (void *)next, |
704 | next->stack->sptr, labs (next->stack->ssize)); |
739 | next->stack->sptr, labs (next->stack->ssize)); |
705 | } |
740 | } |
706 | |
741 | |
707 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
742 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
743 | /* don't add any code here */ |
708 | } |
744 | } |
709 | |
745 | |
710 | } |
746 | } |
711 | else if (next->tmps_ix == -2) |
747 | else if (next->tmps_ix == -2) |
712 | croak ("tried to transfer to running coroutine"); |
748 | croak ("tried to transfer to running coroutine"); |
… | |
… | |
719 | if (!prev->stack) |
755 | if (!prev->stack) |
720 | allocate_stack (prev, 0); |
756 | allocate_stack (prev, 0); |
721 | |
757 | |
722 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
758 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
723 | { |
759 | { |
|
|
760 | PL_top_env = &next->start_env; |
|
|
761 | |
724 | setup_coro (next); |
762 | setup_coro (next); |
725 | |
763 | |
726 | prev->stack->refcnt++; |
764 | prev->stack->refcnt++; |
727 | prev->stack->usecnt++; |
765 | prev->stack->usecnt++; |
728 | next->stack = prev->stack; |
766 | next->stack = prev->stack; |
729 | next->gencnt = prev->gencnt; |
767 | next->gencnt = prev->gencnt; |
730 | } |
768 | } |
731 | else |
769 | else |
732 | { |
770 | { |
|
|
771 | assert (!next->stack); |
733 | allocate_stack (next, 1); |
772 | allocate_stack (next, 1); |
734 | coro_create (&(next->stack->cctx), |
773 | coro_create (&(next->stack->cctx), |
735 | setup_coro, (void *)next, |
774 | setup_coro, (void *)next, |
736 | next->stack->sptr, labs (next->stack->ssize)); |
775 | next->stack->sptr, labs (next->stack->ssize)); |
737 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
776 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
777 | /* don't add any code here */ |
738 | } |
778 | } |
739 | } |
779 | } |
740 | else |
780 | else |
741 | setup_coro (next); |
781 | setup_coro (next); |
742 | } |
782 | } |
|
|
783 | |
|
|
784 | /* |
|
|
785 | * xnext is now either prev or next, depending on wether |
|
|
786 | * we switched the c stack or not. that's why I use a global |
|
|
787 | * variable, that should become thread-specific at one point. |
|
|
788 | */ |
|
|
789 | xnext->cursp = stacklevel; |
743 | } |
790 | } |
744 | |
791 | |
745 | next->cursp = stacklevel; |
792 | if (coro_mortal) |
|
|
793 | { |
|
|
794 | SvREFCNT_dec (coro_mortal); |
|
|
795 | coro_mortal = 0; |
|
|
796 | } |
|
|
797 | } |
|
|
798 | |
|
|
799 | #define SV_CORO(sv,func) \ |
|
|
800 | do { \ |
|
|
801 | if (SvROK (sv)) \ |
|
|
802 | sv = SvRV (sv); \ |
|
|
803 | \ |
|
|
804 | if (SvTYPE(sv) == SVt_PVHV) \ |
|
|
805 | { \ |
|
|
806 | HE *he = hv_fetch_ent((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
807 | \ |
|
|
808 | if (!he) \ |
|
|
809 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
810 | \ |
|
|
811 | (sv) = SvRV (HeVAL(he)); \ |
|
|
812 | } \ |
|
|
813 | \ |
|
|
814 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
815 | if (!SvOBJECT(sv) || SvSTASH(sv) != coro_state_stash) \ |
|
|
816 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
817 | \ |
|
|
818 | } while(0) |
|
|
819 | |
|
|
820 | #define SvSTATE(sv) (struct coro *)SvIV (sv) |
|
|
821 | |
|
|
822 | static void |
|
|
823 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
|
|
824 | { |
|
|
825 | SV_CORO (prev, "Coro::transfer"); |
|
|
826 | SV_CORO (next, "Coro::transfer"); |
|
|
827 | |
|
|
828 | transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags); |
|
|
829 | } |
|
|
830 | |
|
|
831 | /** Coro ********************************************************************/ |
|
|
832 | |
|
|
833 | #define PRIO_MAX 3 |
|
|
834 | #define PRIO_HIGH 1 |
|
|
835 | #define PRIO_NORMAL 0 |
|
|
836 | #define PRIO_LOW -1 |
|
|
837 | #define PRIO_IDLE -3 |
|
|
838 | #define PRIO_MIN -4 |
|
|
839 | |
|
|
840 | /* for Coro.pm */ |
|
|
841 | static GV *coro_current, *coro_idle; |
|
|
842 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
|
|
843 | static int coro_nready; |
|
|
844 | |
|
|
845 | static void |
|
|
846 | coro_enq (SV *sv) |
|
|
847 | { |
|
|
848 | if (SvTYPE (sv) == SVt_PVHV) |
|
|
849 | { |
|
|
850 | SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
851 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
852 | |
|
|
853 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
854 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
855 | : prio; |
|
|
856 | |
|
|
857 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
858 | coro_nready++; |
|
|
859 | |
|
|
860 | return; |
|
|
861 | } |
|
|
862 | |
|
|
863 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
864 | } |
|
|
865 | |
|
|
866 | static SV * |
|
|
867 | coro_deq (int min_prio) |
|
|
868 | { |
|
|
869 | int prio = PRIO_MAX - PRIO_MIN; |
|
|
870 | |
|
|
871 | min_prio -= PRIO_MIN; |
|
|
872 | if (min_prio < 0) |
|
|
873 | min_prio = 0; |
|
|
874 | |
|
|
875 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
|
|
876 | if (av_len (coro_ready[prio]) >= 0) |
|
|
877 | { |
|
|
878 | coro_nready--; |
|
|
879 | return av_shift (coro_ready[prio]); |
|
|
880 | } |
|
|
881 | |
|
|
882 | return 0; |
|
|
883 | } |
|
|
884 | |
|
|
885 | static void |
|
|
886 | api_ready (SV *coro) |
|
|
887 | { |
|
|
888 | if (SvROK (coro)) |
|
|
889 | coro = SvRV (coro); |
|
|
890 | |
|
|
891 | coro_enq (SvREFCNT_inc (coro)); |
|
|
892 | } |
|
|
893 | |
|
|
894 | static void |
|
|
895 | api_schedule (void) |
|
|
896 | { |
|
|
897 | SV *prev, *next; |
|
|
898 | |
|
|
899 | prev = SvRV (GvSV (coro_current)); |
|
|
900 | next = coro_deq (PRIO_MIN); |
|
|
901 | |
|
|
902 | if (!next) |
|
|
903 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
|
|
904 | |
|
|
905 | /* free this only after the transfer */ |
|
|
906 | coro_mortal = prev; |
|
|
907 | SV_CORO (prev, "Coro::schedule"); |
|
|
908 | |
|
|
909 | SvRV (GvSV (coro_current)) = next; |
|
|
910 | |
|
|
911 | SV_CORO (next, "Coro::schedule"); |
|
|
912 | |
|
|
913 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
|
|
914 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
915 | } |
|
|
916 | |
|
|
917 | static void |
|
|
918 | api_cede (void) |
|
|
919 | { |
|
|
920 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
921 | |
|
|
922 | api_schedule (); |
746 | } |
923 | } |
747 | |
924 | |
748 | MODULE = Coro::State PACKAGE = Coro::State |
925 | MODULE = Coro::State PACKAGE = Coro::State |
749 | |
926 | |
750 | PROTOTYPES: ENABLE |
927 | PROTOTYPES: ENABLE |
… | |
… | |
762 | |
939 | |
763 | if (!padlist_cache) |
940 | if (!padlist_cache) |
764 | padlist_cache = newHV (); |
941 | padlist_cache = newHV (); |
765 | |
942 | |
766 | main_mainstack = PL_mainstack; |
943 | main_mainstack = PL_mainstack; |
|
|
944 | |
|
|
945 | coroapi.ver = CORO_API_VERSION; |
|
|
946 | coroapi.transfer = api_transfer; |
767 | } |
947 | } |
768 | |
948 | |
769 | Coro::State |
949 | Coro::State |
770 | _newprocess(args) |
950 | _newprocess(args) |
771 | SV * args |
951 | SV * args |
… | |
… | |
774 | Coro__State coro; |
954 | Coro__State coro; |
775 | |
955 | |
776 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
956 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
777 | croak ("Coro::State::_newprocess expects an arrayref"); |
957 | croak ("Coro::State::_newprocess expects an arrayref"); |
778 | |
958 | |
779 | New (0, coro, 1, struct coro); |
959 | Newz (0, coro, 1, struct coro); |
780 | |
960 | |
781 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
961 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
782 | coro->mainstack = 0; /* actual work is done inside transfer */ |
962 | coro->mainstack = 0; /* actual work is done inside transfer */ |
783 | coro->stack = 0; |
963 | coro->stack = 0; |
784 | |
964 | |
|
|
965 | /* same as JMPENV_BOOTSTRAP */ |
|
|
966 | /* we might be able to recycle start_env, but safe is safe */ |
|
|
967 | //Zero(&coro->start_env, 1, JMPENV); |
|
|
968 | coro->start_env.je_ret = -1; |
|
|
969 | coro->start_env.je_mustcatch = TRUE; |
|
|
970 | |
785 | RETVAL = coro; |
971 | RETVAL = coro; |
786 | OUTPUT: |
972 | OUTPUT: |
787 | RETVAL |
973 | RETVAL |
788 | |
974 | |
789 | void |
975 | void |
790 | transfer(prev, next, flags = TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK) |
976 | transfer(prev, next, flags) |
791 | Coro::State_or_hashref prev |
977 | SV *prev |
792 | Coro::State_or_hashref next |
978 | SV *next |
793 | int flags |
979 | int flags |
794 | PROTOTYPE: @ |
980 | PROTOTYPE: @ |
795 | CODE: |
981 | CODE: |
|
|
982 | PUTBACK; |
|
|
983 | SV_CORO (next, "Coro::transfer"); |
|
|
984 | SV_CORO (prev, "Coro::transfer"); |
796 | transfer (aTHX_ prev, next, flags); |
985 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
|
|
986 | SPAGAIN; |
797 | |
987 | |
798 | void |
988 | void |
799 | DESTROY(coro) |
989 | DESTROY(coro) |
800 | Coro::State coro |
990 | Coro::State coro |
801 | CODE: |
991 | CODE: |
802 | |
992 | |
803 | if (coro->mainstack && coro->mainstack != main_mainstack) |
993 | if (coro->mainstack && coro->mainstack != main_mainstack) |
804 | { |
994 | { |
805 | struct coro temp; |
995 | struct coro temp; |
806 | |
996 | |
|
|
997 | PUTBACK; |
807 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
998 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
808 | LOAD(aTHX_ coro); |
999 | LOAD(aTHX_ coro); |
|
|
1000 | SPAGAIN; |
809 | |
1001 | |
810 | destroy_stacks (aTHX); |
1002 | destroy_stacks (aTHX); |
811 | |
1003 | |
812 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
1004 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
|
|
1005 | SPAGAIN; |
813 | |
1006 | |
814 | coro->mainstack = 0; |
1007 | coro->mainstack = 0; |
815 | } |
1008 | } |
816 | |
1009 | |
817 | deallocate_stack (coro); |
1010 | deallocate_stack (coro); |
818 | |
1011 | SvREFCNT_dec (coro->args); |
819 | Safefree (coro); |
1012 | Safefree (coro); |
820 | |
1013 | |
821 | void |
1014 | void |
822 | flush() |
1015 | flush() |
823 | CODE: |
1016 | CODE: |
824 | #ifdef MAY_FLUSH |
1017 | #ifdef MAY_FLUSH |
825 | flush_padlist_cache (); |
1018 | flush_padlist_cache (); |
826 | #endif |
1019 | #endif |
827 | |
1020 | |
|
|
1021 | void |
|
|
1022 | _exit(code) |
|
|
1023 | int code |
|
|
1024 | PROTOTYPE: $ |
|
|
1025 | CODE: |
|
|
1026 | #if defined(__GLIBC__) || _POSIX_C_SOURCE |
|
|
1027 | _exit (code); |
|
|
1028 | #else |
|
|
1029 | signal (SIGTERM, SIG_DFL); |
|
|
1030 | raise (SIGTERM); |
|
|
1031 | exit (code); |
|
|
1032 | #endif |
|
|
1033 | |
828 | MODULE = Coro::State PACKAGE = Coro::Cont |
1034 | MODULE = Coro::State PACKAGE = Coro::Cont |
829 | |
1035 | |
830 | # this is slightly dirty |
1036 | # this is slightly dirty (should expose a c-level api) |
831 | |
1037 | |
832 | void |
1038 | void |
833 | yield(...) |
1039 | yield(...) |
834 | PROTOTYPE: @ |
1040 | PROTOTYPE: @ |
835 | CODE: |
1041 | CODE: |
… | |
… | |
837 | SV *sv; |
1043 | SV *sv; |
838 | AV *defav = GvAV (PL_defgv); |
1044 | AV *defav = GvAV (PL_defgv); |
839 | struct coro *prev, *next; |
1045 | struct coro *prev, *next; |
840 | |
1046 | |
841 | if (!returnstk) |
1047 | if (!returnstk) |
842 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
1048 | returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE)); |
843 | |
1049 | |
844 | /* set up @_ -- ugly */ |
1050 | /* set up @_ -- ugly */ |
845 | av_clear (defav); |
1051 | av_clear (defav); |
846 | av_fill (defav, items - 1); |
1052 | av_fill (defav, items - 1); |
847 | while (items--) |
1053 | while (items--) |
… | |
… | |
853 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
1059 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
854 | SvREFCNT_dec (sv); |
1060 | SvREFCNT_dec (sv); |
855 | |
1061 | |
856 | transfer(aTHX_ prev, next, 0); |
1062 | transfer(aTHX_ prev, next, 0); |
857 | |
1063 | |
|
|
1064 | MODULE = Coro::State PACKAGE = Coro |
|
|
1065 | |
|
|
1066 | # this is slightly dirty (should expose a c-level api) |
|
|
1067 | |
|
|
1068 | BOOT: |
|
|
1069 | { |
|
|
1070 | int i; |
|
|
1071 | HV *stash = gv_stashpv ("Coro", TRUE); |
|
|
1072 | |
|
|
1073 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
|
|
1074 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
|
|
1075 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
|
|
1076 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
|
|
1077 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
|
|
1078 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
|
|
1079 | |
|
|
1080 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1081 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1082 | |
|
|
1083 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
|
|
1084 | coro_ready[i] = newAV (); |
|
|
1085 | |
|
|
1086 | { |
|
|
1087 | SV *sv = perl_get_sv("Coro::API", 1); |
|
|
1088 | |
|
|
1089 | coroapi.schedule = api_schedule; |
|
|
1090 | coroapi.cede = api_cede; |
|
|
1091 | coroapi.ready = api_ready; |
|
|
1092 | coroapi.nready = &coro_nready; |
|
|
1093 | coroapi.current = coro_current; |
|
|
1094 | |
|
|
1095 | GCoroAPI = &coroapi; |
|
|
1096 | sv_setiv(sv, (IV)&coroapi); |
|
|
1097 | SvREADONLY_on(sv); |
|
|
1098 | } |
|
|
1099 | } |
|
|
1100 | |
|
|
1101 | void |
|
|
1102 | ready(self) |
|
|
1103 | SV * self |
|
|
1104 | PROTOTYPE: $ |
|
|
1105 | CODE: |
|
|
1106 | api_ready (self); |
|
|
1107 | |
|
|
1108 | int |
|
|
1109 | nready(...) |
|
|
1110 | PROTOTYPE: |
|
|
1111 | CODE: |
|
|
1112 | RETVAL = coro_nready; |
|
|
1113 | OUTPUT: |
|
|
1114 | RETVAL |
|
|
1115 | |
|
|
1116 | void |
|
|
1117 | schedule(...) |
|
|
1118 | PROTOTYPE: |
|
|
1119 | CODE: |
|
|
1120 | api_schedule (); |
|
|
1121 | |
|
|
1122 | void |
|
|
1123 | cede(...) |
|
|
1124 | PROTOTYPE: |
|
|
1125 | CODE: |
|
|
1126 | api_cede (); |
|
|
1127 | |