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 | |
5 | #if 0 |
5 | #include "libcoro/coro.c" |
6 | # define CHK(x) (void *)0 |
6 | |
|
|
7 | #include <signal.h> |
|
|
8 | |
|
|
9 | #ifdef HAVE_MMAP |
|
|
10 | # include <unistd.h> |
|
|
11 | # include <sys/mman.h> |
|
|
12 | # ifndef MAP_ANON |
|
|
13 | # ifdef MAP_ANONYMOUS |
|
|
14 | # define MAP_ANON MAP_ANONYMOUS |
7 | #else |
15 | # else |
8 | # define CHK(x) if (!(x)) croak("FATAL, CHK: " #x) |
16 | # undef HAVE_MMAP |
|
|
17 | # endif |
|
|
18 | # endif |
9 | #endif |
19 | #endif |
10 | |
20 | |
|
|
21 | #define MAY_FLUSH /* increases codesize */ |
|
|
22 | |
|
|
23 | #define SUB_INIT "Coro::State::initialize" |
|
|
24 | #define UCORO_STATE "_coro_state" |
|
|
25 | |
|
|
26 | /* The next macro should delcare a variable stacklevel that contains and approximation |
|
|
27 | * to the current C stack pointer. Its property is that it changes with each call |
|
|
28 | * and should be unique. */ |
|
|
29 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
|
|
30 | |
|
|
31 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
|
|
32 | |
|
|
33 | #include "CoroAPI.h" |
|
|
34 | |
|
|
35 | static struct CoroAPI coroapi; |
|
|
36 | |
|
|
37 | /* this is actually not only the c stack but also c registers etc... */ |
|
|
38 | typedef struct { |
|
|
39 | int refcnt; /* pointer reference counter */ |
|
|
40 | int usecnt; /* shared by how many coroutines */ |
|
|
41 | int gencnt; /* generation counter */ |
|
|
42 | |
|
|
43 | coro_context cctx; |
|
|
44 | |
|
|
45 | void *sptr; |
|
|
46 | long ssize; /* positive == mmap, otherwise malloc */ |
|
|
47 | } coro_stack; |
|
|
48 | |
11 | struct coro { |
49 | struct coro { |
|
|
50 | /* the optional C context */ |
|
|
51 | coro_stack *stack; |
|
|
52 | void *cursp; |
|
|
53 | int gencnt; |
|
|
54 | |
|
|
55 | /* optionally saved, might be zero */ |
|
|
56 | AV *defav; |
|
|
57 | SV *defsv; |
|
|
58 | SV *errsv; |
|
|
59 | |
|
|
60 | /* saved global state not related to stacks */ |
12 | U8 dowarn; |
61 | U8 dowarn; |
13 | AV *defav; |
62 | I32 in_eval; |
14 | |
63 | |
|
|
64 | /* the stacks and related info (callchain etc..) */ |
15 | PERL_SI *curstackinfo; |
65 | PERL_SI *curstackinfo; |
16 | AV *curstack; |
66 | AV *curstack; |
17 | AV *mainstack; |
67 | AV *mainstack; |
18 | SV **stack_sp; |
68 | SV **stack_sp; |
19 | OP *op; |
69 | OP *op; |
… | |
… | |
35 | I32 savestack_max; |
85 | I32 savestack_max; |
36 | OP **retstack; |
86 | OP **retstack; |
37 | I32 retstack_ix; |
87 | I32 retstack_ix; |
38 | I32 retstack_max; |
88 | I32 retstack_max; |
39 | COP *curcop; |
89 | COP *curcop; |
|
|
90 | JMPENV *top_env; |
40 | |
91 | |
|
|
92 | /* data associated with this coroutine (initial args) */ |
41 | AV *args; |
93 | AV *args; |
42 | }; |
94 | }; |
43 | |
95 | |
44 | typedef struct coro *Coro__State; |
96 | typedef struct coro *Coro__State; |
45 | typedef struct coro *Coro__State_or_hashref; |
97 | typedef struct coro *Coro__State_or_hashref; |
46 | |
98 | |
|
|
99 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
|
|
100 | static HV *coro_state_stash; |
|
|
101 | static SV *ucoro_state_sv; |
|
|
102 | static U32 ucoro_state_hash; |
47 | static HV *padlist_cache; |
103 | static HV *padlist_cache; |
48 | |
104 | |
49 | /* mostly copied from op.c:cv_clone2 */ |
105 | /* mostly copied from op.c:cv_clone2 */ |
50 | STATIC AV * |
106 | STATIC AV * |
51 | clone_padlist (AV *protopadlist) |
107 | clone_padlist (AV *protopadlist) |
… | |
… | |
115 | SvPADTMP_on (sv); |
171 | SvPADTMP_on (sv); |
116 | npad[ix] = sv; |
172 | npad[ix] = sv; |
117 | } |
173 | } |
118 | } |
174 | } |
119 | |
175 | |
120 | #if 0 /* NONOTUNDERSTOOD */ |
176 | #if 0 /* return -ENOTUNDERSTOOD */ |
121 | /* Now that vars are all in place, clone nested closures. */ |
177 | /* Now that vars are all in place, clone nested closures. */ |
122 | |
178 | |
123 | for (ix = fpad; ix > 0; ix--) { |
179 | for (ix = fpad; ix > 0; ix--) { |
124 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
180 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
125 | if (namesv |
181 | if (namesv |
… | |
… | |
138 | #endif |
194 | #endif |
139 | |
195 | |
140 | return newpadlist; |
196 | return newpadlist; |
141 | } |
197 | } |
142 | |
198 | |
|
|
199 | #ifdef MAY_FLUSH |
143 | STATIC AV * |
200 | STATIC AV * |
144 | free_padlist (AV *padlist) |
201 | free_padlist (AV *padlist) |
145 | { |
202 | { |
146 | /* may be during global destruction */ |
203 | /* may be during global destruction */ |
147 | if (SvREFCNT(padlist)) |
204 | if (SvREFCNT(padlist)) |
… | |
… | |
156 | } |
213 | } |
157 | |
214 | |
158 | SvREFCNT_dec((SV*)padlist); |
215 | SvREFCNT_dec((SV*)padlist); |
159 | } |
216 | } |
160 | } |
217 | } |
|
|
218 | #endif |
161 | |
219 | |
162 | /* the next tow functions merely cache the padlists */ |
220 | /* the next two functions merely cache the padlists */ |
163 | STATIC void |
221 | STATIC void |
164 | get_padlist (CV *cv) |
222 | get_padlist (CV *cv) |
165 | { |
223 | { |
166 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
224 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
167 | |
225 | |
… | |
… | |
183 | } |
241 | } |
184 | |
242 | |
185 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
243 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
186 | } |
244 | } |
187 | |
245 | |
|
|
246 | #ifdef MAY_FLUSH |
|
|
247 | STATIC void |
|
|
248 | flush_padlist_cache () |
|
|
249 | { |
|
|
250 | HV *hv = padlist_cache; |
|
|
251 | padlist_cache = newHV (); |
|
|
252 | |
|
|
253 | if (hv_iterinit (hv)) |
|
|
254 | { |
|
|
255 | HE *he; |
|
|
256 | AV *padlist; |
|
|
257 | |
|
|
258 | while (!!(he = hv_iternext (hv))) |
|
|
259 | { |
|
|
260 | AV *av = (AV *)HeVAL(he); |
|
|
261 | |
|
|
262 | /* casting is fun. */ |
|
|
263 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
|
|
264 | free_padlist (padlist); |
|
|
265 | } |
|
|
266 | } |
|
|
267 | |
|
|
268 | SvREFCNT_dec (hv); |
|
|
269 | } |
|
|
270 | #endif |
|
|
271 | |
|
|
272 | #define SB do { |
|
|
273 | #define SE } while (0) |
|
|
274 | |
|
|
275 | #define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE |
|
|
276 | #define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE |
|
|
277 | |
|
|
278 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
|
|
279 | |
188 | static void |
280 | static void |
189 | SAVE(pTHX_ Coro__State c) |
281 | load_state(pTHX_ Coro__State c) |
|
|
282 | { |
|
|
283 | PL_dowarn = c->dowarn; |
|
|
284 | PL_in_eval = c->in_eval; |
|
|
285 | |
|
|
286 | PL_curstackinfo = c->curstackinfo; |
|
|
287 | PL_curstack = c->curstack; |
|
|
288 | PL_mainstack = c->mainstack; |
|
|
289 | PL_stack_sp = c->stack_sp; |
|
|
290 | PL_op = c->op; |
|
|
291 | PL_curpad = c->curpad; |
|
|
292 | PL_stack_base = c->stack_base; |
|
|
293 | PL_stack_max = c->stack_max; |
|
|
294 | PL_tmps_stack = c->tmps_stack; |
|
|
295 | PL_tmps_floor = c->tmps_floor; |
|
|
296 | PL_tmps_ix = c->tmps_ix; |
|
|
297 | PL_tmps_max = c->tmps_max; |
|
|
298 | PL_markstack = c->markstack; |
|
|
299 | PL_markstack_ptr = c->markstack_ptr; |
|
|
300 | PL_markstack_max = c->markstack_max; |
|
|
301 | PL_scopestack = c->scopestack; |
|
|
302 | PL_scopestack_ix = c->scopestack_ix; |
|
|
303 | PL_scopestack_max = c->scopestack_max; |
|
|
304 | PL_savestack = c->savestack; |
|
|
305 | PL_savestack_ix = c->savestack_ix; |
|
|
306 | PL_savestack_max = c->savestack_max; |
|
|
307 | PL_retstack = c->retstack; |
|
|
308 | PL_retstack_ix = c->retstack_ix; |
|
|
309 | PL_retstack_max = c->retstack_max; |
|
|
310 | PL_curcop = c->curcop; |
|
|
311 | PL_top_env = c->top_env; |
|
|
312 | |
|
|
313 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
|
|
314 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
|
|
315 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
|
|
316 | |
|
|
317 | { |
|
|
318 | dSP; |
|
|
319 | CV *cv; |
|
|
320 | |
|
|
321 | /* now do the ugly restore mess */ |
|
|
322 | while ((cv = (CV *)POPs)) |
|
|
323 | { |
|
|
324 | AV *padlist = (AV *)POPs; |
|
|
325 | |
|
|
326 | if (padlist) |
|
|
327 | { |
|
|
328 | put_padlist (cv); /* mark this padlist as available */ |
|
|
329 | CvPADLIST(cv) = padlist; |
|
|
330 | #ifdef USE_THREADS |
|
|
331 | /*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
|
|
332 | #endif |
|
|
333 | } |
|
|
334 | |
|
|
335 | ++CvDEPTH(cv); |
|
|
336 | } |
|
|
337 | |
|
|
338 | PUTBACK; |
|
|
339 | } |
|
|
340 | } |
|
|
341 | |
|
|
342 | static void |
|
|
343 | save_state(pTHX_ Coro__State c, int flags) |
190 | { |
344 | { |
191 | { |
345 | { |
192 | dSP; |
346 | dSP; |
193 | I32 cxix = cxstack_ix; |
347 | I32 cxix = cxstack_ix; |
|
|
348 | PERL_CONTEXT *ccstk = cxstack; |
194 | PERL_SI *top_si = PL_curstackinfo; |
349 | PERL_SI *top_si = PL_curstackinfo; |
195 | PERL_CONTEXT *ccstk = cxstack; |
|
|
196 | |
350 | |
197 | /* |
351 | /* |
198 | * the worst thing you can imagine happens first - we have to save |
352 | * the worst thing you can imagine happens first - we have to save |
199 | * (and reinitialize) all cv's in the whole callchain :( |
353 | * (and reinitialize) all cv's in the whole callchain :( |
200 | */ |
354 | */ |
201 | |
355 | |
202 | PUSHs (Nullsv); |
356 | PUSHs (Nullsv); |
203 | /* this loop was inspired by pp_caller */ |
357 | /* this loop was inspired by pp_caller */ |
204 | for (;;) |
358 | for (;;) |
205 | { |
359 | { |
206 | while (cxix >= 0) |
360 | do |
207 | { |
361 | { |
208 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
362 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
209 | |
363 | |
210 | if (CxTYPE(cx) == CXt_SUB) |
364 | if (CxTYPE(cx) == CXt_SUB) |
211 | { |
365 | { |
212 | CV *cv = cx->blk_sub.cv; |
366 | CV *cv = cx->blk_sub.cv; |
213 | if (CvDEPTH(cv)) |
367 | if (CvDEPTH(cv)) |
214 | { |
368 | { |
215 | #ifdef USE_THREADS |
369 | #ifdef USE_THREADS |
216 | XPUSHs ((SV *)CvOWNER(cv)); |
370 | /*XPUSHs ((SV *)CvOWNER(cv));*/ |
|
|
371 | /*CvOWNER(cv) = 0;*/ |
|
|
372 | /*error must unlock this cv etc.. etc...*/ |
217 | #endif |
373 | #endif |
218 | EXTEND (SP, 3); |
374 | EXTEND (SP, CvDEPTH(cv)*2); |
|
|
375 | |
|
|
376 | while (--CvDEPTH(cv)) |
|
|
377 | { |
|
|
378 | /* this tells the restore code to increment CvDEPTH */ |
|
|
379 | PUSHs (Nullsv); |
219 | PUSHs ((SV *)CvDEPTH(cv)); |
380 | PUSHs ((SV *)cv); |
|
|
381 | } |
|
|
382 | |
220 | PUSHs ((SV *)CvPADLIST(cv)); |
383 | PUSHs ((SV *)CvPADLIST(cv)); |
221 | PUSHs ((SV *)cv); |
384 | PUSHs ((SV *)cv); |
222 | |
385 | |
223 | get_padlist (cv); |
386 | get_padlist (cv); /* this is a monster */ |
224 | |
|
|
225 | CvDEPTH(cv) = 0; |
|
|
226 | #ifdef USE_THREADS |
|
|
227 | CvOWNER(cv) = 0; |
|
|
228 | error must unlock this cv etc.. etc... |
|
|
229 | if you are here wondering about this error message then |
|
|
230 | the reason is that it will not work as advertised yet |
|
|
231 | #endif |
|
|
232 | } |
387 | } |
233 | } |
388 | } |
234 | else if (CxTYPE(cx) == CXt_FORMAT) |
389 | else if (CxTYPE(cx) == CXt_FORMAT) |
235 | { |
390 | { |
236 | /* I never used formats, so how should I know how these are implemented? */ |
391 | /* I never used formats, so how should I know how these are implemented? */ |
237 | /* my bold guess is as a simple, plain sub... */ |
392 | /* my bold guess is as a simple, plain sub... */ |
238 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
393 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
239 | } |
394 | } |
240 | } |
395 | } |
|
|
396 | while (cxix >= 0); |
241 | |
397 | |
242 | if (top_si->si_type == PERLSI_MAIN) |
398 | if (top_si->si_type == PERLSI_MAIN) |
243 | break; |
399 | break; |
244 | |
400 | |
245 | top_si = top_si->si_prev; |
401 | top_si = top_si->si_prev; |
… | |
… | |
248 | } |
404 | } |
249 | |
405 | |
250 | PUTBACK; |
406 | PUTBACK; |
251 | } |
407 | } |
252 | |
408 | |
|
|
409 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
|
|
410 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
|
|
411 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
|
|
412 | |
|
|
413 | /* I have not the slightest idea of why av_reify is necessary */ |
|
|
414 | /* but if it's missing the defav contents magically get replaced sometimes */ |
|
|
415 | if (c->defav) |
|
|
416 | av_reify (c->defav); |
|
|
417 | |
253 | c->dowarn = PL_dowarn; |
418 | c->dowarn = PL_dowarn; |
254 | c->defav = GvAV (PL_defgv); |
419 | c->in_eval = PL_in_eval; |
|
|
420 | |
255 | c->curstackinfo = PL_curstackinfo; |
421 | c->curstackinfo = PL_curstackinfo; |
256 | c->curstack = PL_curstack; |
422 | c->curstack = PL_curstack; |
257 | c->mainstack = PL_mainstack; |
423 | c->mainstack = PL_mainstack; |
258 | c->stack_sp = PL_stack_sp; |
424 | c->stack_sp = PL_stack_sp; |
259 | c->op = PL_op; |
425 | c->op = PL_op; |
… | |
… | |
275 | c->savestack_max = PL_savestack_max; |
441 | c->savestack_max = PL_savestack_max; |
276 | c->retstack = PL_retstack; |
442 | c->retstack = PL_retstack; |
277 | c->retstack_ix = PL_retstack_ix; |
443 | c->retstack_ix = PL_retstack_ix; |
278 | c->retstack_max = PL_retstack_max; |
444 | c->retstack_max = PL_retstack_max; |
279 | c->curcop = PL_curcop; |
445 | c->curcop = PL_curcop; |
|
|
446 | c->top_env = PL_top_env; |
280 | } |
447 | } |
281 | |
448 | |
282 | static void |
449 | /* |
283 | LOAD(pTHX_ Coro__State c) |
450 | * allocate various perl stacks. This is an exact copy |
|
|
451 | * of perl.c:init_stacks, except that it uses less memory |
|
|
452 | * on the assumption that coroutines do not usually need |
|
|
453 | * a lot of stackspace. |
|
|
454 | */ |
|
|
455 | STATIC void |
|
|
456 | coro_init_stacks (pTHX) |
284 | { |
457 | { |
285 | PL_dowarn = c->dowarn; |
458 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
286 | GvAV (PL_defgv) = c->defav; |
459 | PL_curstackinfo->si_type = PERLSI_MAIN; |
287 | PL_curstackinfo = c->curstackinfo; |
460 | PL_curstack = PL_curstackinfo->si_stack; |
288 | PL_curstack = c->curstack; |
461 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
289 | PL_mainstack = c->mainstack; |
462 | |
|
|
463 | PL_stack_base = AvARRAY(PL_curstack); |
290 | PL_stack_sp = c->stack_sp; |
464 | PL_stack_sp = PL_stack_base; |
291 | PL_op = c->op; |
465 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
292 | PL_curpad = c->curpad; |
466 | |
293 | PL_stack_base = c->stack_base; |
467 | New(50,PL_tmps_stack,96,SV*); |
294 | PL_stack_max = c->stack_max; |
468 | PL_tmps_floor = -1; |
295 | PL_tmps_stack = c->tmps_stack; |
469 | PL_tmps_ix = -1; |
296 | PL_tmps_floor = c->tmps_floor; |
470 | PL_tmps_max = 96; |
297 | PL_tmps_ix = c->tmps_ix; |
471 | |
298 | PL_tmps_max = c->tmps_max; |
472 | New(54,PL_markstack,16,I32); |
299 | PL_markstack = c->markstack; |
|
|
300 | PL_markstack_ptr = c->markstack_ptr; |
473 | PL_markstack_ptr = PL_markstack; |
301 | PL_markstack_max = c->markstack_max; |
474 | PL_markstack_max = PL_markstack + 16; |
302 | PL_scopestack = c->scopestack; |
|
|
303 | PL_scopestack_ix = c->scopestack_ix; |
|
|
304 | PL_scopestack_max = c->scopestack_max; |
|
|
305 | PL_savestack = c->savestack; |
|
|
306 | PL_savestack_ix = c->savestack_ix; |
|
|
307 | PL_savestack_max = c->savestack_max; |
|
|
308 | PL_retstack = c->retstack; |
|
|
309 | PL_retstack_ix = c->retstack_ix; |
|
|
310 | PL_retstack_max = c->retstack_max; |
|
|
311 | PL_curcop = c->curcop; |
|
|
312 | |
475 | |
313 | { |
476 | SET_MARK_OFFSET; |
314 | dSP; |
|
|
315 | CV *cv; |
|
|
316 | |
477 | |
317 | /* now do the ugly restore mess */ |
478 | New(54,PL_scopestack,16,I32); |
318 | while ((cv = (CV *)POPs)) |
479 | PL_scopestack_ix = 0; |
319 | { |
480 | PL_scopestack_max = 16; |
320 | AV *padlist = (AV *)POPs; |
|
|
321 | |
481 | |
322 | put_padlist (cv); |
482 | New(54,PL_savestack,96,ANY); |
323 | CvPADLIST(cv) = padlist; |
483 | PL_savestack_ix = 0; |
324 | CvDEPTH(cv) = (I32)POPs; |
484 | PL_savestack_max = 96; |
325 | |
485 | |
326 | #ifdef USE_THREADS |
486 | New(54,PL_retstack,8,OP*); |
327 | CvOWNER(cv) = (struct perl_thread *)POPs; |
487 | PL_retstack_ix = 0; |
328 | error does not work either |
488 | PL_retstack_max = 8; |
329 | #endif |
|
|
330 | } |
|
|
331 | |
|
|
332 | PUTBACK; |
|
|
333 | } |
|
|
334 | } |
489 | } |
335 | |
490 | |
336 | /* this is an EXACT copy of S_nuke_stacks in perl.c, which is unfortunately static */ |
491 | /* |
|
|
492 | * destroy the stacks, the callchain etc... |
|
|
493 | * still there is a memleak of 128 bytes... |
|
|
494 | */ |
337 | STATIC void |
495 | STATIC void |
338 | destroy_stacks(pTHX) |
496 | destroy_stacks(pTHX) |
339 | { |
497 | { |
340 | /* die does this while calling POPSTACK, but I just don't see why. */ |
|
|
341 | dounwind(-1); |
|
|
342 | |
|
|
343 | /* is this ugly, I ask? */ |
498 | /* is this ugly, I ask? */ |
344 | while (PL_scopestack_ix) |
499 | while (PL_scopestack_ix) |
345 | LEAVE; |
500 | LEAVE; |
346 | |
501 | |
|
|
502 | /* sure it is, but more important: is it correct?? :/ */ |
|
|
503 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
|
|
504 | FREETMPS; |
|
|
505 | |
347 | while (PL_curstackinfo->si_next) |
506 | while (PL_curstackinfo->si_next) |
348 | PL_curstackinfo = PL_curstackinfo->si_next; |
507 | PL_curstackinfo = PL_curstackinfo->si_next; |
349 | |
508 | |
350 | while (PL_curstackinfo) |
509 | while (PL_curstackinfo) |
351 | { |
510 | { |
352 | PERL_SI *p = PL_curstackinfo->si_prev; |
511 | PERL_SI *p = PL_curstackinfo->si_prev; |
|
|
512 | |
|
|
513 | { |
|
|
514 | dSP; |
|
|
515 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
516 | PUTBACK; /* possibly superfluous */ |
|
|
517 | } |
|
|
518 | |
|
|
519 | dounwind(-1); |
353 | |
520 | |
354 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
521 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
355 | Safefree(PL_curstackinfo->si_cxstack); |
522 | Safefree(PL_curstackinfo->si_cxstack); |
356 | Safefree(PL_curstackinfo); |
523 | Safefree(PL_curstackinfo); |
357 | PL_curstackinfo = p; |
524 | PL_curstackinfo = p; |
358 | } |
525 | } |
359 | |
526 | |
360 | if (PL_scopestack_ix != 0) |
|
|
361 | Perl_warner(aTHX_ WARN_INTERNAL, |
|
|
362 | "Unbalanced scopes: %ld more ENTERs than LEAVEs\n", |
|
|
363 | (long)PL_scopestack_ix); |
|
|
364 | if (PL_savestack_ix != 0) |
|
|
365 | Perl_warner(aTHX_ WARN_INTERNAL, |
|
|
366 | "Unbalanced saves: %ld more saves than restores\n", |
|
|
367 | (long)PL_savestack_ix); |
|
|
368 | if (PL_tmps_floor != -1) |
|
|
369 | Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n", |
|
|
370 | (long)PL_tmps_floor + 1); |
|
|
371 | /* |
|
|
372 | */ |
|
|
373 | Safefree(PL_tmps_stack); |
527 | Safefree(PL_tmps_stack); |
374 | Safefree(PL_markstack); |
528 | Safefree(PL_markstack); |
375 | Safefree(PL_scopestack); |
529 | Safefree(PL_scopestack); |
376 | Safefree(PL_savestack); |
530 | Safefree(PL_savestack); |
377 | Safefree(PL_retstack); |
531 | Safefree(PL_retstack); |
378 | } |
532 | } |
379 | |
533 | |
380 | #define SUB_INIT "Coro::State::_newcoro" |
534 | static void |
|
|
535 | allocate_stack (Coro__State ctx, int alloc) |
|
|
536 | { |
|
|
537 | coro_stack *stack; |
|
|
538 | |
|
|
539 | New (0, stack, 1, coro_stack); |
|
|
540 | |
|
|
541 | stack->refcnt = 1; |
|
|
542 | stack->usecnt = 1; |
|
|
543 | stack->gencnt = ctx->gencnt = 0; |
|
|
544 | if (alloc) |
|
|
545 | { |
|
|
546 | #ifdef HAVE_MMAP |
|
|
547 | stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
548 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0); |
|
|
549 | if (stack->sptr == (void *)-1) |
|
|
550 | #endif |
|
|
551 | { |
|
|
552 | /*FIXME*//*D*//* reasonable stack size! */ |
|
|
553 | stack->ssize = -4096 * sizeof (long); |
|
|
554 | New (0, stack->sptr, 4096, long); |
|
|
555 | } |
|
|
556 | } |
|
|
557 | else |
|
|
558 | stack->sptr = 0; |
|
|
559 | |
|
|
560 | ctx->stack = stack; |
|
|
561 | } |
|
|
562 | |
|
|
563 | static void |
|
|
564 | deallocate_stack (Coro__State ctx) |
|
|
565 | { |
|
|
566 | coro_stack *stack = ctx->stack; |
|
|
567 | |
|
|
568 | ctx->stack = 0; |
|
|
569 | |
|
|
570 | if (stack) |
|
|
571 | { |
|
|
572 | if (!--stack->refcnt) |
|
|
573 | { |
|
|
574 | #ifdef HAVE_MMAP |
|
|
575 | if (stack->ssize > 0 && stack->sptr) |
|
|
576 | munmap (stack->sptr, stack->ssize); |
|
|
577 | else |
|
|
578 | #else |
|
|
579 | Safefree (stack->sptr); |
|
|
580 | #endif |
|
|
581 | Safefree (stack); |
|
|
582 | } |
|
|
583 | else if (ctx->gencnt == stack->gencnt) |
|
|
584 | --stack->usecnt; |
|
|
585 | } |
|
|
586 | } |
|
|
587 | |
|
|
588 | static void |
|
|
589 | setup_coro (void *arg) |
|
|
590 | { |
|
|
591 | /* |
|
|
592 | * emulate part of the perl startup here. |
|
|
593 | */ |
|
|
594 | dSP; |
|
|
595 | Coro__State ctx = (Coro__State)arg; |
|
|
596 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
|
|
597 | |
|
|
598 | coro_init_stacks (aTHX); |
|
|
599 | /*PL_curcop = 0;*/ |
|
|
600 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
|
|
601 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
602 | GvAV (PL_defgv) = ctx->args; |
|
|
603 | |
|
|
604 | SPAGAIN; |
|
|
605 | |
|
|
606 | if (ctx->stack) |
|
|
607 | { |
|
|
608 | ctx->cursp = 0; |
|
|
609 | |
|
|
610 | PUSHMARK(SP); |
|
|
611 | PUTBACK; |
|
|
612 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
613 | |
|
|
614 | if (SvTRUE (ERRSV)) |
|
|
615 | croak (NULL); |
|
|
616 | else |
|
|
617 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
618 | } |
|
|
619 | else |
|
|
620 | { |
|
|
621 | UNOP myop; |
|
|
622 | |
|
|
623 | PL_op = (OP *)&myop; |
|
|
624 | |
|
|
625 | Zero(&myop, 1, UNOP); |
|
|
626 | myop.op_next = Nullop; |
|
|
627 | myop.op_flags = OPf_WANT_VOID; |
|
|
628 | |
|
|
629 | PUSHMARK(SP); |
|
|
630 | XPUSHs (sub_init); |
|
|
631 | /* |
|
|
632 | * the next line is slightly wrong, as PL_op->op_next |
|
|
633 | * is actually being executed so we skip the first op. |
|
|
634 | * that doesn't matter, though, since it is only |
|
|
635 | * pp_nextstate and we never return... |
|
|
636 | * ah yes, and I don't care anyways ;) |
|
|
637 | */ |
|
|
638 | PUTBACK; |
|
|
639 | PL_op = pp_entersub(); |
|
|
640 | SPAGAIN; |
|
|
641 | |
|
|
642 | ENTER; /* necessary e.g. for dounwind */ |
|
|
643 | } |
|
|
644 | } |
|
|
645 | |
|
|
646 | static void |
|
|
647 | continue_coro (void *arg) |
|
|
648 | { |
|
|
649 | /* |
|
|
650 | * this is a _very_ stripped down perl interpreter ;) |
|
|
651 | */ |
|
|
652 | Coro__State ctx = (Coro__State)arg; |
|
|
653 | |
|
|
654 | /*FIXME*//* must set up top_env here */ |
|
|
655 | ctx->cursp = 0; |
|
|
656 | PL_op = PL_op->op_next; |
|
|
657 | CALLRUNOPS(aTHX); |
|
|
658 | |
|
|
659 | abort (); |
|
|
660 | } |
|
|
661 | |
|
|
662 | STATIC void |
|
|
663 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
664 | { |
|
|
665 | dSP; |
|
|
666 | dSTACKLEVEL; |
|
|
667 | |
|
|
668 | if (prev != next) |
|
|
669 | { |
|
|
670 | if (next->mainstack) |
|
|
671 | { |
|
|
672 | SAVE (prev, flags); |
|
|
673 | LOAD (next); |
|
|
674 | |
|
|
675 | /* mark this state as in-use */ |
|
|
676 | next->mainstack = 0; |
|
|
677 | next->tmps_ix = -2; |
|
|
678 | |
|
|
679 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
680 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
681 | { |
|
|
682 | if (!prev->stack) |
|
|
683 | allocate_stack (prev, 0); |
|
|
684 | else if (prev->cursp != stacklevel |
|
|
685 | && prev->stack->usecnt > 1) |
|
|
686 | { |
|
|
687 | prev->gencnt = ++prev->stack->gencnt; |
|
|
688 | prev->stack->usecnt = 1; |
|
|
689 | } |
|
|
690 | |
|
|
691 | /* has our stack been invalidated? */ |
|
|
692 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
693 | { |
|
|
694 | deallocate_stack (next); |
|
|
695 | allocate_stack (next, 1); |
|
|
696 | coro_create (&(next->stack->cctx), |
|
|
697 | continue_coro, (void *)next, |
|
|
698 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
699 | } |
|
|
700 | |
|
|
701 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
702 | } |
|
|
703 | |
|
|
704 | } |
|
|
705 | else if (next->tmps_ix == -2) |
|
|
706 | croak ("tried to transfer to running coroutine"); |
|
|
707 | else |
|
|
708 | { |
|
|
709 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
710 | |
|
|
711 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
712 | { |
|
|
713 | if (!prev->stack) |
|
|
714 | allocate_stack (prev, 0); |
|
|
715 | |
|
|
716 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
717 | { |
|
|
718 | setup_coro (next); |
|
|
719 | |
|
|
720 | prev->stack->refcnt++; |
|
|
721 | prev->stack->usecnt++; |
|
|
722 | next->stack = prev->stack; |
|
|
723 | next->gencnt = prev->gencnt; |
|
|
724 | } |
|
|
725 | else |
|
|
726 | { |
|
|
727 | allocate_stack (next, 1); |
|
|
728 | coro_create (&(next->stack->cctx), |
|
|
729 | setup_coro, (void *)next, |
|
|
730 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
731 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
732 | } |
|
|
733 | } |
|
|
734 | else |
|
|
735 | setup_coro (next); |
|
|
736 | } |
|
|
737 | } |
|
|
738 | |
|
|
739 | next->cursp = stacklevel; |
|
|
740 | } |
|
|
741 | |
|
|
742 | static struct coro * |
|
|
743 | sv_to_coro (SV *arg, const char *funcname, const char *varname) |
|
|
744 | { |
|
|
745 | if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV) |
|
|
746 | { |
|
|
747 | HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash); |
|
|
748 | |
|
|
749 | if (!he) |
|
|
750 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname); |
|
|
751 | |
|
|
752 | arg = HeVAL(he); |
|
|
753 | } |
|
|
754 | |
|
|
755 | /* must also be changed inside Coro::Cont::yield */ |
|
|
756 | if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash) |
|
|
757 | return (struct coro *) SvIV((SV*)SvRV(arg)); |
|
|
758 | else |
|
|
759 | croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname); |
|
|
760 | } |
|
|
761 | |
|
|
762 | static void |
|
|
763 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
|
|
764 | { |
|
|
765 | transfer(aTHX_ sv_to_coro (prev, "Coro::transfer", "prev"), |
|
|
766 | sv_to_coro (next, "Coro::transfer", "next"), |
|
|
767 | flags); |
|
|
768 | } |
|
|
769 | |
|
|
770 | /** Coro ********************************************************************/ |
|
|
771 | |
|
|
772 | #define PRIO_MAX 3 |
|
|
773 | #define PRIO_HIGH 1 |
|
|
774 | #define PRIO_NORMAL 0 |
|
|
775 | #define PRIO_LOW -1 |
|
|
776 | #define PRIO_IDLE -3 |
|
|
777 | #define PRIO_MIN -4 |
|
|
778 | |
|
|
779 | /* for Coro.pm */ |
|
|
780 | static GV *coro_current, *coro_idle; |
|
|
781 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
|
|
782 | |
|
|
783 | static void |
|
|
784 | coro_enq (SV *sv) |
|
|
785 | { |
|
|
786 | if (SvROK (sv)) |
|
|
787 | { |
|
|
788 | SV *hv = SvRV (sv); |
|
|
789 | if (SvTYPE (hv) == SVt_PVHV) |
|
|
790 | { |
|
|
791 | SV **xprio = hv_fetch ((HV *)hv, "prio", 4, 0); |
|
|
792 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
793 | |
|
|
794 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
795 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
796 | : prio; |
|
|
797 | |
|
|
798 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
799 | |
|
|
800 | return; |
|
|
801 | } |
|
|
802 | } |
|
|
803 | |
|
|
804 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
805 | } |
|
|
806 | |
|
|
807 | static SV * |
|
|
808 | coro_deq (int min_prio) |
|
|
809 | { |
|
|
810 | int prio = PRIO_MAX - PRIO_MIN; |
|
|
811 | |
|
|
812 | min_prio -= PRIO_MIN; |
|
|
813 | if (min_prio < 0) |
|
|
814 | min_prio = 0; |
|
|
815 | |
|
|
816 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
|
|
817 | if (av_len (coro_ready[prio]) >= 0) |
|
|
818 | return av_shift (coro_ready[prio]); |
|
|
819 | |
|
|
820 | return 0; |
|
|
821 | } |
|
|
822 | |
|
|
823 | static void |
|
|
824 | api_ready (SV *coro) |
|
|
825 | { |
|
|
826 | coro_enq (SvREFCNT_inc (coro)); |
|
|
827 | } |
|
|
828 | |
|
|
829 | static void |
|
|
830 | api_schedule (int cede) |
|
|
831 | { |
|
|
832 | SV *prev, *next; |
|
|
833 | |
|
|
834 | prev = GvSV (coro_current); |
|
|
835 | |
|
|
836 | if (cede) |
|
|
837 | coro_enq (SvREFCNT_inc (prev)); |
|
|
838 | |
|
|
839 | next = coro_deq (PRIO_MIN); |
|
|
840 | |
|
|
841 | if (!next) |
|
|
842 | next = SvREFCNT_inc (GvSV (coro_idle)); |
|
|
843 | |
|
|
844 | GvSV (coro_current) = SvREFCNT_inc (next); |
|
|
845 | transfer (sv_to_coro (prev, "Coro::schedule", "current coroutine"), |
|
|
846 | sv_to_coro (next, "Coro::schedule", "next coroutine"), |
|
|
847 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
848 | SvREFCNT_dec (next); |
|
|
849 | SvREFCNT_dec (prev); |
|
|
850 | } |
381 | |
851 | |
382 | MODULE = Coro::State PACKAGE = Coro::State |
852 | MODULE = Coro::State PACKAGE = Coro::State |
383 | |
853 | |
384 | PROTOTYPES: ENABLE |
854 | PROTOTYPES: ENABLE |
385 | |
855 | |
386 | BOOT: |
856 | BOOT: |
|
|
857 | { /* {} necessary for stoopid perl-5.6.x */ |
|
|
858 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
|
|
859 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
|
|
860 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
|
|
861 | |
|
|
862 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
|
|
863 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
|
|
864 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
|
|
865 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
|
|
866 | |
387 | if (!padlist_cache) |
867 | if (!padlist_cache) |
388 | padlist_cache = newHV (); |
868 | padlist_cache = newHV (); |
|
|
869 | |
|
|
870 | main_mainstack = PL_mainstack; |
|
|
871 | |
|
|
872 | { |
|
|
873 | SV *sv = perl_get_sv("Coro::API", 1); |
|
|
874 | |
|
|
875 | coroapi.ver = CORO_API_VERSION - 1; |
|
|
876 | coroapi.transfer = api_transfer; |
|
|
877 | coroapi.schedule = api_schedule; |
|
|
878 | coroapi.ready = api_ready; |
|
|
879 | |
|
|
880 | GCoroAPI = &coroapi; |
|
|
881 | sv_setiv(sv, (IV)&coroapi); |
|
|
882 | SvREADONLY_on(sv); |
|
|
883 | } |
|
|
884 | } |
389 | |
885 | |
390 | Coro::State |
886 | Coro::State |
391 | _newprocess(args) |
887 | _newprocess(args) |
392 | SV * args |
888 | SV * args |
393 | PROTOTYPE: $ |
889 | PROTOTYPE: $ |
394 | CODE: |
890 | CODE: |
395 | Coro__State coro; |
891 | Coro__State coro; |
396 | |
892 | |
397 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
893 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
398 | croak ("Coro::State::newprocess expects an arrayref"); |
894 | croak ("Coro::State::_newprocess expects an arrayref"); |
399 | |
895 | |
400 | New (0, coro, 1, struct coro); |
896 | New (0, coro, 1, struct coro); |
401 | |
897 | |
|
|
898 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
402 | coro->mainstack = 0; /* actual work is done inside transfer */ |
899 | coro->mainstack = 0; /* actual work is done inside transfer */ |
403 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
900 | coro->stack = 0; |
404 | |
901 | |
405 | RETVAL = coro; |
902 | RETVAL = coro; |
406 | OUTPUT: |
903 | OUTPUT: |
407 | RETVAL |
904 | RETVAL |
408 | |
905 | |
409 | void |
906 | void |
410 | transfer(prev,next) |
907 | transfer(prev, next, flags) |
411 | Coro::State_or_hashref prev |
908 | Coro::State_or_hashref prev |
412 | Coro::State_or_hashref next |
909 | Coro::State_or_hashref next |
|
|
910 | int flags |
|
|
911 | PROTOTYPE: @ |
413 | CODE: |
912 | CODE: |
414 | |
|
|
415 | if (prev != next) |
|
|
416 | { |
|
|
417 | PUTBACK; |
913 | PUTBACK; |
418 | SAVE (aTHX_ prev); |
914 | transfer (aTHX_ prev, next, flags); |
419 | |
|
|
420 | /* |
|
|
421 | * this could be done in newprocess which would lead to |
|
|
422 | * extremely elegant and fast (just PUTBACK/SAVE/LOAD/SPAGAIN) |
|
|
423 | * code here, but lazy allocation of stacks has also |
|
|
424 | * some virtues and the overhead of the if() is nil. |
|
|
425 | */ |
|
|
426 | if (next->mainstack) |
|
|
427 | { |
|
|
428 | LOAD (aTHX_ next); |
|
|
429 | next->mainstack = 0; /* unnecessary but much cleaner */ |
|
|
430 | SPAGAIN; |
915 | SPAGAIN; |
431 | } |
|
|
432 | else |
|
|
433 | { |
|
|
434 | /* |
|
|
435 | * emulate part of the perl startup here. |
|
|
436 | */ |
|
|
437 | UNOP myop; |
|
|
438 | |
|
|
439 | init_stacks (); /* from perl.c */ |
|
|
440 | PL_op = (OP *)&myop; |
|
|
441 | /*PL_curcop = 0;*/ |
|
|
442 | GvAV (PL_defgv) = (AV *)SvREFCNT_inc ((SV *)next->args); |
|
|
443 | |
|
|
444 | SPAGAIN; |
|
|
445 | Zero(&myop, 1, UNOP); |
|
|
446 | myop.op_next = Nullop; |
|
|
447 | myop.op_flags = OPf_WANT_VOID; |
|
|
448 | |
|
|
449 | PUSHMARK(SP); |
|
|
450 | XPUSHs ((SV*)get_cv(SUB_INIT, TRUE)); |
|
|
451 | PUTBACK; |
|
|
452 | /* |
|
|
453 | * the next line is slightly wrong, as PL_op->op_next |
|
|
454 | * is actually being executed so we skip the first op. |
|
|
455 | * that doesn't matter, though, since it is only |
|
|
456 | * pp_nextstate and we never return... |
|
|
457 | */ |
|
|
458 | PL_op = Perl_pp_entersub(aTHX); |
|
|
459 | SPAGAIN; |
|
|
460 | |
|
|
461 | ENTER; |
|
|
462 | } |
|
|
463 | } |
|
|
464 | |
916 | |
465 | void |
917 | void |
466 | DESTROY(coro) |
918 | DESTROY(coro) |
467 | Coro::State coro |
919 | Coro::State coro |
468 | CODE: |
920 | CODE: |
469 | |
921 | |
470 | if (coro->mainstack) |
922 | if (coro->mainstack && coro->mainstack != main_mainstack) |
471 | { |
923 | { |
472 | struct coro temp; |
924 | struct coro temp; |
473 | |
925 | |
474 | PUTBACK; |
|
|
475 | SAVE(aTHX_ (&temp)); |
926 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
476 | LOAD(aTHX_ coro); |
927 | LOAD(aTHX_ coro); |
477 | |
928 | |
478 | destroy_stacks (); |
929 | destroy_stacks (aTHX); |
479 | SvREFCNT_dec ((SV *)GvAV (PL_defgv)); |
|
|
480 | |
930 | |
481 | LOAD((&temp)); |
931 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
482 | SPAGAIN; |
932 | |
|
|
933 | coro->mainstack = 0; |
483 | } |
934 | } |
484 | |
935 | |
485 | SvREFCNT_dec (coro->args); |
936 | deallocate_stack (coro); |
|
|
937 | |
486 | Safefree (coro); |
938 | Safefree (coro); |
487 | |
939 | |
|
|
940 | void |
|
|
941 | flush() |
|
|
942 | CODE: |
|
|
943 | #ifdef MAY_FLUSH |
|
|
944 | flush_padlist_cache (); |
|
|
945 | #endif |
488 | |
946 | |
|
|
947 | void |
|
|
948 | _exit(code) |
|
|
949 | int code |
|
|
950 | PROTOTYPE: $ |
|
|
951 | CODE: |
|
|
952 | #if defined(__GLIBC__) || _POSIX_C_SOURCE |
|
|
953 | _exit (code); |
|
|
954 | #else |
|
|
955 | signal (SIGTERM, SIG_DFL); |
|
|
956 | raise (SIGTERM); |
|
|
957 | exit (code); |
|
|
958 | #endif |
|
|
959 | |
|
|
960 | MODULE = Coro::State PACKAGE = Coro::Cont |
|
|
961 | |
|
|
962 | # this is slightly dirty (should expose a c-level api) |
|
|
963 | |
|
|
964 | void |
|
|
965 | yield(...) |
|
|
966 | PROTOTYPE: @ |
|
|
967 | CODE: |
|
|
968 | static SV *returnstk; |
|
|
969 | SV *sv; |
|
|
970 | AV *defav = GvAV (PL_defgv); |
|
|
971 | struct coro *prev, *next; |
|
|
972 | |
|
|
973 | if (!returnstk) |
|
|
974 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
|
|
975 | |
|
|
976 | /* set up @_ -- ugly */ |
|
|
977 | av_clear (defav); |
|
|
978 | av_fill (defav, items - 1); |
|
|
979 | while (items--) |
|
|
980 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
981 | |
|
|
982 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
983 | sv = av_pop ((AV *)SvRV (returnstk)); |
|
|
984 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
985 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
986 | SvREFCNT_dec (sv); |
|
|
987 | |
|
|
988 | transfer(aTHX_ prev, next, 0); |
|
|
989 | |
|
|
990 | MODULE = Coro::State PACKAGE = Coro |
|
|
991 | |
|
|
992 | # this is slightly dirty (should expose a c-level api) |
|
|
993 | |
|
|
994 | BOOT: |
|
|
995 | { |
|
|
996 | int i; |
|
|
997 | HV *stash = gv_stashpv ("Coro", TRUE); |
|
|
998 | |
|
|
999 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
|
|
1000 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
|
|
1001 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
|
|
1002 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
|
|
1003 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
|
|
1004 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
|
|
1005 | |
|
|
1006 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1007 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1008 | |
|
|
1009 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
|
|
1010 | coro_ready[i] = newAV (); |
|
|
1011 | } |
|
|
1012 | |
|
|
1013 | void |
|
|
1014 | ready(self) |
|
|
1015 | SV * self |
|
|
1016 | CODE: |
|
|
1017 | api_ready (self); |
|
|
1018 | |
|
|
1019 | void |
|
|
1020 | schedule(...) |
|
|
1021 | ALIAS: |
|
|
1022 | cede = 1 |
|
|
1023 | CODE: |
|
|
1024 | api_schedule (ix); |
|
|
1025 | |