1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
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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 |
4 | |
27 | |
5 | #include "libcoro/coro.c" |
28 | #include "libcoro/coro.c" |
6 | |
29 | |
7 | #include <signal.h> |
30 | #include <signal.h> |
8 | |
31 | |
… | |
… | |
16 | # undef HAVE_MMAP |
39 | # undef HAVE_MMAP |
17 | # endif |
40 | # endif |
18 | # endif |
41 | # endif |
19 | #endif |
42 | #endif |
20 | |
43 | |
21 | #define MAY_FLUSH /* increases codesize and is rarely used */ |
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22 | |
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23 | #define SUB_INIT "Coro::State::initialize" |
44 | #define SUB_INIT "Coro::State::initialize" |
24 | #define UCORO_STATE "_coro_state" |
45 | #define UCORO_STATE "_coro_state" |
25 | |
46 | |
26 | /* The next macro should declare a variable stacklevel that contains and approximation |
47 | /* The next macro should declare a variable stacklevel that contains and approximation |
27 | * to the current C stack pointer. Its property is that it changes with each call |
48 | * to the current C stack pointer. Its property is that it changes with each call |
… | |
… | |
47 | void *sptr; |
68 | void *sptr; |
48 | long ssize; /* positive == mmap, otherwise malloc */ |
69 | long ssize; /* positive == mmap, otherwise malloc */ |
49 | } coro_stack; |
70 | } coro_stack; |
50 | |
71 | |
51 | struct coro { |
72 | struct coro { |
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73 | /* the top-level JMPENV for each coroutine, needed to catch dies. */ |
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74 | JMPENV start_env; |
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75 | |
52 | /* the optional C context */ |
76 | /* the optional C context */ |
53 | coro_stack *stack; |
77 | coro_stack *stack; |
54 | void *cursp; |
78 | void *cursp; |
55 | int gencnt; |
79 | int gencnt; |
56 | |
80 | |
57 | /* optionally saved, might be zero */ |
81 | /* optionally saved, might be zero */ |
58 | AV *defav; |
82 | AV *defav; |
59 | SV *defsv; |
83 | SV *defsv; |
60 | SV *errsv; |
84 | SV *errsv; |
61 | /* TODO: PL_pmop might be nice && effortless to save. */ |
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62 | |
85 | |
63 | /* saved global state not related to stacks */ |
86 | /* saved global state not related to stacks */ |
64 | U8 dowarn; |
87 | U8 dowarn; |
65 | I32 in_eval; |
88 | I32 in_eval; |
66 | |
89 | |
… | |
… | |
69 | AV *curstack; |
92 | AV *curstack; |
70 | AV *mainstack; |
93 | AV *mainstack; |
71 | SV **stack_sp; |
94 | SV **stack_sp; |
72 | OP *op; |
95 | OP *op; |
73 | SV **curpad; |
96 | SV **curpad; |
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97 | AV *comppad; |
74 | SV **stack_base; |
98 | SV **stack_base; |
75 | SV **stack_max; |
99 | SV **stack_max; |
76 | SV **tmps_stack; |
100 | SV **tmps_stack; |
77 | I32 tmps_floor; |
101 | I32 tmps_floor; |
78 | I32 tmps_ix; |
102 | I32 tmps_ix; |
… | |
… | |
102 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
126 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
103 | static HV *coro_state_stash; |
127 | static HV *coro_state_stash; |
104 | static SV *ucoro_state_sv; |
128 | static SV *ucoro_state_sv; |
105 | static U32 ucoro_state_hash; |
129 | static U32 ucoro_state_hash; |
106 | static HV *padlist_cache; |
130 | static HV *padlist_cache; |
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131 | static SV *coro_mortal; /* will be freed after next transfer */ |
107 | |
132 | |
108 | /* mostly copied from op.c:cv_clone2 */ |
133 | /* mostly copied from op.c:cv_clone2 */ |
109 | STATIC AV * |
134 | STATIC AV * |
110 | clone_padlist (AV *protopadlist) |
135 | clone_padlist (AV *protopadlist) |
111 | { |
136 | { |
… | |
… | |
157 | sv = (SV *) newAV (); |
182 | sv = (SV *) newAV (); |
158 | else if (*name == '%') |
183 | else if (*name == '%') |
159 | sv = (SV *) newHV (); |
184 | sv = (SV *) newHV (); |
160 | else |
185 | else |
161 | sv = NEWSV (0, 0); |
186 | sv = NEWSV (0, 0); |
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187 | #ifdef SvPADBUSY |
162 | if (!SvPADBUSY (sv)) |
188 | if (!SvPADBUSY (sv)) |
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189 | #endif |
163 | SvPADMY_on (sv); |
190 | SvPADMY_on (sv); |
164 | npad[ix] = sv; |
191 | npad[ix] = sv; |
165 | } |
192 | } |
166 | } |
193 | } |
167 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
194 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
… | |
… | |
197 | #endif |
224 | #endif |
198 | |
225 | |
199 | return newpadlist; |
226 | return newpadlist; |
200 | } |
227 | } |
201 | |
228 | |
202 | #ifdef MAY_FLUSH |
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203 | STATIC void |
229 | STATIC void |
204 | free_padlist (AV *padlist) |
230 | free_padlist (AV *padlist) |
205 | { |
231 | { |
206 | /* may be during global destruction */ |
232 | /* may be during global destruction */ |
207 | if (SvREFCNT(padlist)) |
233 | if (SvREFCNT (padlist)) |
208 | { |
234 | { |
209 | I32 i = AvFILLp(padlist); |
235 | I32 i = AvFILLp (padlist); |
210 | while (i >= 0) |
236 | while (i >= 0) |
211 | { |
237 | { |
212 | SV **svp = av_fetch(padlist, i--, FALSE); |
238 | SV **svp = av_fetch (padlist, i--, FALSE); |
213 | SV *sv = svp ? *svp : Nullsv; |
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214 | if (sv) |
239 | if (svp) |
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240 | { |
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241 | SV *sv; |
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242 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
215 | SvREFCNT_dec(sv); |
243 | SvREFCNT_dec (sv); |
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244 | |
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245 | SvREFCNT_dec (*svp); |
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246 | } |
216 | } |
247 | } |
217 | |
248 | |
218 | SvREFCNT_dec((SV*)padlist); |
249 | SvREFCNT_dec ((SV*)padlist); |
219 | } |
250 | } |
220 | } |
251 | } |
221 | #endif |
252 | |
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253 | STATIC int |
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254 | coro_cv_free (SV *sv, MAGIC *mg) |
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255 | { |
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256 | AV *padlist; |
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257 | AV *av = (AV *)mg->mg_obj; |
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258 | |
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259 | /* casting is fun. */ |
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260 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
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261 | free_padlist (padlist); |
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262 | } |
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263 | |
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264 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
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265 | |
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266 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
222 | |
267 | |
223 | /* the next two functions merely cache the padlists */ |
268 | /* the next two functions merely cache the padlists */ |
224 | STATIC void |
269 | STATIC void |
225 | get_padlist (CV *cv) |
270 | get_padlist (CV *cv) |
226 | { |
271 | { |
227 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
272 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
228 | |
273 | |
229 | if (he && AvFILLp ((AV *)*he) >= 0) |
274 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
230 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
275 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
231 | else |
276 | else |
232 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
277 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
233 | } |
278 | } |
234 | |
279 | |
235 | STATIC void |
280 | STATIC void |
236 | put_padlist (CV *cv) |
281 | put_padlist (CV *cv) |
237 | { |
282 | { |
238 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
283 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
239 | |
284 | |
240 | if (SvTYPE (*he) != SVt_PVAV) |
285 | if (!mg) |
241 | { |
286 | { |
242 | SvREFCNT_dec (*he); |
287 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
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288 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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289 | mg->mg_virtual = &vtbl_coro; |
243 | *he = (SV *)newAV (); |
290 | mg->mg_obj = (SV *)newAV (); |
244 | } |
291 | } |
245 | |
292 | |
246 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
293 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
247 | } |
294 | } |
248 | |
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249 | #ifdef MAY_FLUSH |
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250 | STATIC void |
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251 | flush_padlist_cache () |
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252 | { |
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253 | HV *hv = padlist_cache; |
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254 | padlist_cache = newHV (); |
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255 | |
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256 | if (hv_iterinit (hv)) |
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257 | { |
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258 | HE *he; |
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259 | AV *padlist; |
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260 | |
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261 | while (!!(he = hv_iternext (hv))) |
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262 | { |
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263 | AV *av = (AV *)HeVAL(he); |
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264 | |
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265 | /* casting is fun. */ |
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266 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
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267 | free_padlist (padlist); |
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268 | } |
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269 | } |
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270 | |
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271 | SvREFCNT_dec (hv); |
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272 | } |
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273 | #endif |
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274 | |
295 | |
275 | #define SB do { |
296 | #define SB do { |
276 | #define SE } while (0) |
297 | #define SE } while (0) |
277 | |
298 | |
278 | #define LOAD(state) load_state(aTHX_ (state)); |
299 | #define LOAD(state) load_state(aTHX_ (state)); |
279 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
300 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
280 | |
301 | |
281 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
302 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
282 | |
303 | |
283 | static void |
304 | static void |
284 | load_state(pTHX_ Coro__State c) |
305 | load_state(pTHX_ Coro__State c) |
285 | { |
306 | { |
286 | PL_dowarn = c->dowarn; |
307 | PL_dowarn = c->dowarn; |
… | |
… | |
290 | PL_curstack = c->curstack; |
311 | PL_curstack = c->curstack; |
291 | PL_mainstack = c->mainstack; |
312 | PL_mainstack = c->mainstack; |
292 | PL_stack_sp = c->stack_sp; |
313 | PL_stack_sp = c->stack_sp; |
293 | PL_op = c->op; |
314 | PL_op = c->op; |
294 | PL_curpad = c->curpad; |
315 | PL_curpad = c->curpad; |
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316 | PL_comppad = c->comppad; |
295 | PL_stack_base = c->stack_base; |
317 | PL_stack_base = c->stack_base; |
296 | PL_stack_max = c->stack_max; |
318 | PL_stack_max = c->stack_max; |
297 | PL_tmps_stack = c->tmps_stack; |
319 | PL_tmps_stack = c->tmps_stack; |
298 | PL_tmps_floor = c->tmps_floor; |
320 | PL_tmps_floor = c->tmps_floor; |
299 | PL_tmps_ix = c->tmps_ix; |
321 | PL_tmps_ix = c->tmps_ix; |
… | |
… | |
387 | PUSHs ((SV *)cv); |
409 | PUSHs ((SV *)cv); |
388 | |
410 | |
389 | get_padlist (cv); /* this is a monster */ |
411 | get_padlist (cv); /* this is a monster */ |
390 | } |
412 | } |
391 | } |
413 | } |
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414 | #ifdef CXt_FORMAT |
392 | else if (CxTYPE(cx) == CXt_FORMAT) |
415 | else if (CxTYPE(cx) == CXt_FORMAT) |
393 | { |
416 | { |
394 | /* I never used formats, so how should I know how these are implemented? */ |
417 | /* I never used formats, so how should I know how these are implemented? */ |
395 | /* my bold guess is as a simple, plain sub... */ |
418 | /* my bold guess is as a simple, plain sub... */ |
396 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
419 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
397 | } |
420 | } |
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421 | #endif |
398 | } |
422 | } |
399 | |
423 | |
400 | if (top_si->si_type == PERLSI_MAIN) |
424 | if (top_si->si_type == PERLSI_MAIN) |
401 | break; |
425 | break; |
402 | |
426 | |
… | |
… | |
419 | c->curstack = PL_curstack; |
443 | c->curstack = PL_curstack; |
420 | c->mainstack = PL_mainstack; |
444 | c->mainstack = PL_mainstack; |
421 | c->stack_sp = PL_stack_sp; |
445 | c->stack_sp = PL_stack_sp; |
422 | c->op = PL_op; |
446 | c->op = PL_op; |
423 | c->curpad = PL_curpad; |
447 | c->curpad = PL_curpad; |
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448 | c->comppad = PL_comppad; |
424 | c->stack_base = PL_stack_base; |
449 | c->stack_base = PL_stack_base; |
425 | c->stack_max = PL_stack_max; |
450 | c->stack_max = PL_stack_max; |
426 | c->tmps_stack = PL_tmps_stack; |
451 | c->tmps_stack = PL_tmps_stack; |
427 | c->tmps_floor = PL_tmps_floor; |
452 | c->tmps_floor = PL_tmps_floor; |
428 | c->tmps_ix = PL_tmps_ix; |
453 | c->tmps_ix = PL_tmps_ix; |
… | |
… | |
444 | } |
469 | } |
445 | |
470 | |
446 | /* |
471 | /* |
447 | * allocate various perl stacks. This is an exact copy |
472 | * allocate various perl stacks. This is an exact copy |
448 | * of perl.c:init_stacks, except that it uses less memory |
473 | * of perl.c:init_stacks, except that it uses less memory |
449 | * on the assumption that coroutines do not usually need |
474 | * on the (sometimes correct) assumption that coroutines do |
450 | * a lot of stackspace. |
475 | * not usually need a lot of stackspace. |
451 | */ |
476 | */ |
452 | STATIC void |
477 | STATIC void |
453 | coro_init_stacks (pTHX) |
478 | coro_init_stacks (pTHX) |
454 | { |
479 | { |
455 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
480 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
… | |
… | |
468 | |
493 | |
469 | New(54,PL_markstack,16,I32); |
494 | New(54,PL_markstack,16,I32); |
470 | PL_markstack_ptr = PL_markstack; |
495 | PL_markstack_ptr = PL_markstack; |
471 | PL_markstack_max = PL_markstack + 16; |
496 | PL_markstack_max = PL_markstack + 16; |
472 | |
497 | |
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498 | #ifdef SET_MARK_OFFSET |
473 | SET_MARK_OFFSET; |
499 | SET_MARK_OFFSET; |
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500 | #endif |
474 | |
501 | |
475 | New(54,PL_scopestack,16,I32); |
502 | New(54,PL_scopestack,16,I32); |
476 | PL_scopestack_ix = 0; |
503 | PL_scopestack_ix = 0; |
477 | PL_scopestack_max = 16; |
504 | PL_scopestack_max = 16; |
478 | |
505 | |
… | |
… | |
485 | PL_retstack_max = 8; |
512 | PL_retstack_max = 8; |
486 | } |
513 | } |
487 | |
514 | |
488 | /* |
515 | /* |
489 | * destroy the stacks, the callchain etc... |
516 | * destroy the stacks, the callchain etc... |
490 | * still there is a memleak of 128 bytes... |
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491 | */ |
517 | */ |
492 | STATIC void |
518 | STATIC void |
493 | destroy_stacks(pTHX) |
519 | destroy_stacks(pTHX) |
494 | { |
520 | { |
495 | if (!IN_DESTRUCT) |
521 | if (!IN_DESTRUCT) |
496 | { |
522 | { |
497 | /* is this ugly, I ask? */ |
523 | /* is this ugly, I ask? */ |
498 | while (PL_scopestack_ix) |
524 | LEAVE_SCOPE (0); |
499 | LEAVE; |
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500 | |
525 | |
501 | /* sure it is, but more important: is it correct?? :/ */ |
526 | /* sure it is, but more important: is it correct?? :/ */ |
502 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
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503 | FREETMPS; |
527 | FREETMPS; |
504 | } |
528 | } |
505 | |
529 | |
506 | while (PL_curstackinfo->si_next) |
530 | while (PL_curstackinfo->si_next) |
507 | PL_curstackinfo = PL_curstackinfo->si_next; |
531 | PL_curstackinfo = PL_curstackinfo->si_next; |
508 | |
532 | |
… | |
… | |
551 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
575 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
552 | if (stack->sptr == (void *)-1) |
576 | if (stack->sptr == (void *)-1) |
553 | #endif |
577 | #endif |
554 | { |
578 | { |
555 | /*FIXME*//*D*//* reasonable stack size! */ |
579 | /*FIXME*//*D*//* reasonable stack size! */ |
556 | stack->ssize = -4096 * sizeof (long); |
580 | stack->ssize = - (16384 * sizeof (long)); |
557 | New (0, stack->sptr, 4096, long); |
581 | New (0, stack->sptr, 16384, long); |
558 | } |
582 | } |
559 | } |
583 | } |
560 | else |
584 | else |
561 | stack->sptr = 0; |
585 | stack->sptr = 0; |
562 | |
586 | |
… | |
… | |
576 | { |
600 | { |
577 | #ifdef HAVE_MMAP |
601 | #ifdef HAVE_MMAP |
578 | if (stack->ssize > 0 && stack->sptr) |
602 | if (stack->ssize > 0 && stack->sptr) |
579 | munmap (stack->sptr, stack->ssize); |
603 | munmap (stack->sptr, stack->ssize); |
580 | else |
604 | else |
581 | #else |
605 | #endif |
582 | Safefree (stack->sptr); |
606 | Safefree (stack->sptr); |
583 | #endif |
607 | |
584 | Safefree (stack); |
608 | Safefree (stack); |
585 | } |
609 | } |
586 | else if (ctx->gencnt == stack->gencnt) |
610 | else if (ctx->gencnt == stack->gencnt) |
587 | --stack->usecnt; |
611 | --stack->usecnt; |
588 | } |
612 | } |
… | |
… | |
594 | /* |
618 | /* |
595 | * emulate part of the perl startup here. |
619 | * emulate part of the perl startup here. |
596 | */ |
620 | */ |
597 | dSP; |
621 | dSP; |
598 | Coro__State ctx = (Coro__State)arg; |
622 | Coro__State ctx = (Coro__State)arg; |
599 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
623 | SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE); |
600 | |
624 | |
601 | coro_init_stacks (aTHX); |
625 | coro_init_stacks (aTHX); |
602 | /*PL_curcop = 0;*/ |
626 | /*PL_curcop = 0;*/ |
603 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
627 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
604 | SvREFCNT_dec (GvAV (PL_defgv)); |
628 | SvREFCNT_dec (GvAV (PL_defgv)); |
605 | GvAV (PL_defgv) = ctx->args; |
629 | GvAV (PL_defgv) = ctx->args; ctx->args = 0; |
606 | |
630 | |
607 | SPAGAIN; |
631 | SPAGAIN; |
608 | |
632 | |
609 | if (ctx->stack) |
633 | if (ctx->stack) |
610 | { |
634 | { |
… | |
… | |
637 | * that doesn't matter, though, since it is only |
661 | * that doesn't matter, though, since it is only |
638 | * pp_nextstate and we never return... |
662 | * pp_nextstate and we never return... |
639 | * ah yes, and I don't care anyways ;) |
663 | * ah yes, and I don't care anyways ;) |
640 | */ |
664 | */ |
641 | PUTBACK; |
665 | PUTBACK; |
642 | PL_op = pp_entersub(); |
666 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
643 | SPAGAIN; |
667 | SPAGAIN; |
644 | |
668 | |
645 | ENTER; /* necessary e.g. for dounwind */ |
669 | ENTER; /* necessary e.g. for dounwind */ |
646 | } |
670 | } |
647 | } |
671 | } |
… | |
… | |
653 | * this is a _very_ stripped down perl interpreter ;) |
677 | * this is a _very_ stripped down perl interpreter ;) |
654 | */ |
678 | */ |
655 | Coro__State ctx = (Coro__State)arg; |
679 | Coro__State ctx = (Coro__State)arg; |
656 | JMPENV coro_start_env; |
680 | JMPENV coro_start_env; |
657 | |
681 | |
658 | /* same as JMPENV_BOOTSTRAP */ |
|
|
659 | Zero(&coro_start_env, 1, JMPENV); |
|
|
660 | coro_start_env.je_ret = -1; |
|
|
661 | coro_start_env.je_mustcatch = TRUE; |
|
|
662 | PL_top_env = &coro_start_env; |
682 | PL_top_env = &ctx->start_env; |
663 | |
683 | |
664 | ctx->cursp = 0; |
684 | ctx->cursp = 0; |
665 | PL_op = PL_op->op_next; |
685 | PL_op = PL_op->op_next; |
666 | CALLRUNOPS(aTHX); |
686 | CALLRUNOPS(aTHX); |
667 | |
687 | |
… | |
… | |
725 | if (!prev->stack) |
745 | if (!prev->stack) |
726 | allocate_stack (prev, 0); |
746 | allocate_stack (prev, 0); |
727 | |
747 | |
728 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
748 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
729 | { |
749 | { |
|
|
750 | PL_top_env = &next->start_env; |
|
|
751 | |
730 | setup_coro (next); |
752 | setup_coro (next); |
731 | |
753 | |
732 | prev->stack->refcnt++; |
754 | prev->stack->refcnt++; |
733 | prev->stack->usecnt++; |
755 | prev->stack->usecnt++; |
734 | next->stack = prev->stack; |
756 | next->stack = prev->stack; |
735 | next->gencnt = prev->gencnt; |
757 | next->gencnt = prev->gencnt; |
736 | } |
758 | } |
737 | else |
759 | else |
738 | { |
760 | { |
|
|
761 | assert (!next->stack); |
739 | allocate_stack (next, 1); |
762 | allocate_stack (next, 1); |
740 | coro_create (&(next->stack->cctx), |
763 | coro_create (&(next->stack->cctx), |
741 | setup_coro, (void *)next, |
764 | setup_coro, (void *)next, |
742 | next->stack->sptr, labs (next->stack->ssize)); |
765 | next->stack->sptr, labs (next->stack->ssize)); |
743 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
766 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
… | |
… | |
748 | setup_coro (next); |
771 | setup_coro (next); |
749 | } |
772 | } |
750 | |
773 | |
751 | /* |
774 | /* |
752 | * xnext is now either prev or next, depending on wether |
775 | * xnext is now either prev or next, depending on wether |
753 | * we switched the c stack or not. that's why i use a global |
776 | * we switched the c stack or not. that's why I use a global |
754 | * variable, that should become thread-specific at one point. |
777 | * variable, that should become thread-specific at one point. |
755 | */ |
778 | */ |
756 | xnext->cursp = stacklevel; |
779 | xnext->cursp = stacklevel; |
757 | } |
780 | } |
758 | } |
|
|
759 | |
781 | |
760 | static struct coro * |
782 | if (coro_mortal) |
761 | sv_to_coro (SV *arg, const char *funcname, const char *varname) |
|
|
762 | { |
|
|
763 | if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV) |
|
|
764 | { |
783 | { |
765 | HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash); |
784 | SvREFCNT_dec (coro_mortal); |
766 | |
785 | coro_mortal = 0; |
767 | if (!he) |
|
|
768 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname); |
|
|
769 | |
|
|
770 | arg = HeVAL(he); |
|
|
771 | } |
786 | } |
772 | |
787 | } |
|
|
788 | |
|
|
789 | #define SV_CORO(sv,func) \ |
|
|
790 | do { \ |
|
|
791 | if (SvROK (sv)) \ |
|
|
792 | sv = SvRV (sv); \ |
|
|
793 | \ |
|
|
794 | if (SvTYPE(sv) == SVt_PVHV) \ |
|
|
795 | { \ |
|
|
796 | HE *he = hv_fetch_ent((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
797 | \ |
|
|
798 | if (!he) \ |
|
|
799 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
800 | \ |
|
|
801 | (sv) = SvRV (HeVAL(he)); \ |
|
|
802 | } \ |
|
|
803 | \ |
773 | /* must also be changed inside Coro::Cont::yield */ |
804 | /* must also be changed inside Coro::Cont::yield */ \ |
774 | if (SvROK(arg) && SvOBJECT(SvRV(arg)) |
805 | if (!SvOBJECT(sv) || SvSTASH(sv) != coro_state_stash) \ |
775 | && SvSTASH(SvRV(arg)) == coro_state_stash) |
|
|
776 | return (struct coro *) SvIV((SV*)SvRV(arg)); |
|
|
777 | |
|
|
778 | croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname); |
806 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
779 | /*NORETURN*/ |
807 | \ |
780 | } |
808 | } while(0) |
|
|
809 | |
|
|
810 | #define SvSTATE(sv) (struct coro *)SvIV (sv) |
781 | |
811 | |
782 | static void |
812 | static void |
783 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
813 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
784 | { |
814 | { |
785 | transfer(aTHX_ |
815 | SV_CORO (prev, "Coro::transfer"); |
786 | sv_to_coro (prev, "Coro::transfer", "prev"), |
816 | SV_CORO (next, "Coro::transfer"); |
787 | sv_to_coro (next, "Coro::transfer", "next"), |
817 | |
788 | flags); |
818 | transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags); |
789 | } |
819 | } |
790 | |
820 | |
791 | /** Coro ********************************************************************/ |
821 | /** Coro ********************************************************************/ |
792 | |
822 | |
793 | #define PRIO_MAX 3 |
823 | #define PRIO_MAX 3 |
… | |
… | |
803 | static int coro_nready; |
833 | static int coro_nready; |
804 | |
834 | |
805 | static void |
835 | static void |
806 | coro_enq (SV *sv) |
836 | coro_enq (SV *sv) |
807 | { |
837 | { |
808 | if (SvROK (sv)) |
838 | if (SvTYPE (sv) == SVt_PVHV) |
809 | { |
839 | { |
810 | SV *hv = SvRV (sv); |
|
|
811 | if (SvTYPE (hv) == SVt_PVHV) |
|
|
812 | { |
|
|
813 | SV **xprio = hv_fetch ((HV *)hv, "prio", 4, 0); |
840 | SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
814 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
841 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
815 | |
842 | |
816 | prio = prio > PRIO_MAX ? PRIO_MAX |
843 | prio = prio > PRIO_MAX ? PRIO_MAX |
817 | : prio < PRIO_MIN ? PRIO_MIN |
844 | : prio < PRIO_MIN ? PRIO_MIN |
818 | : prio; |
845 | : prio; |
819 | |
846 | |
820 | av_push (coro_ready [prio - PRIO_MIN], sv); |
847 | av_push (coro_ready [prio - PRIO_MIN], sv); |
821 | coro_nready++; |
848 | coro_nready++; |
822 | |
849 | |
823 | return; |
850 | return; |
824 | } |
|
|
825 | } |
851 | } |
826 | |
852 | |
827 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
853 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
828 | } |
854 | } |
829 | |
855 | |
… | |
… | |
847 | } |
873 | } |
848 | |
874 | |
849 | static void |
875 | static void |
850 | api_ready (SV *coro) |
876 | api_ready (SV *coro) |
851 | { |
877 | { |
|
|
878 | if (SvROK (coro)) |
|
|
879 | coro = SvRV (coro); |
|
|
880 | |
852 | coro_enq (SvREFCNT_inc (coro)); |
881 | coro_enq (SvREFCNT_inc (coro)); |
853 | } |
882 | } |
854 | |
883 | |
855 | static void |
884 | static void |
856 | api_schedule (int cede) |
885 | api_schedule (void) |
857 | { |
886 | { |
858 | SV *prev, *next; |
887 | SV *prev, *next; |
859 | |
888 | |
860 | prev = GvSV (coro_current); |
889 | prev = SvRV (GvSV (coro_current)); |
861 | |
|
|
862 | if (cede) |
|
|
863 | coro_enq (SvREFCNT_inc (prev)); |
|
|
864 | |
|
|
865 | next = coro_deq (PRIO_MIN); |
890 | next = coro_deq (PRIO_MIN); |
866 | |
891 | |
867 | if (!next) |
892 | if (!next) |
868 | next = SvREFCNT_inc (GvSV (coro_idle)); |
893 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
869 | |
894 | |
870 | GvSV (coro_current) = SvREFCNT_inc (next); |
895 | /* free this only after the transfer */ |
871 | transfer (aTHX_ |
896 | coro_mortal = prev; |
872 | sv_to_coro (prev, "Coro::schedule", "current coroutine"), |
897 | SV_CORO (prev, "Coro::schedule"); |
873 | sv_to_coro (next, "Coro::schedule", "next coroutine"), |
898 | |
|
|
899 | SvRV (GvSV (coro_current)) = next; |
|
|
900 | |
|
|
901 | SV_CORO (next, "Coro::schedule"); |
|
|
902 | |
|
|
903 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
874 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
904 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
875 | SvREFCNT_dec (next); |
905 | } |
876 | SvREFCNT_dec (prev); |
906 | |
|
|
907 | static void |
|
|
908 | api_cede (void) |
|
|
909 | { |
|
|
910 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
911 | |
|
|
912 | api_schedule (); |
877 | } |
913 | } |
878 | |
914 | |
879 | MODULE = Coro::State PACKAGE = Coro::State |
915 | MODULE = Coro::State PACKAGE = Coro::State |
880 | |
916 | |
881 | PROTOTYPES: ENABLE |
917 | PROTOTYPES: ENABLE |
… | |
… | |
908 | Coro__State coro; |
944 | Coro__State coro; |
909 | |
945 | |
910 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
946 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
911 | croak ("Coro::State::_newprocess expects an arrayref"); |
947 | croak ("Coro::State::_newprocess expects an arrayref"); |
912 | |
948 | |
913 | New (0, coro, 1, struct coro); |
949 | Newz (0, coro, 1, struct coro); |
914 | |
950 | |
915 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
951 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
916 | coro->mainstack = 0; /* actual work is done inside transfer */ |
952 | coro->mainstack = 0; /* actual work is done inside transfer */ |
917 | coro->stack = 0; |
953 | coro->stack = 0; |
918 | |
954 | |
|
|
955 | /* same as JMPENV_BOOTSTRAP */ |
|
|
956 | /* we might be able to recycle start_env, but safe is safe */ |
|
|
957 | //Zero(&coro->start_env, 1, JMPENV); |
|
|
958 | coro->start_env.je_ret = -1; |
|
|
959 | coro->start_env.je_mustcatch = TRUE; |
|
|
960 | |
919 | RETVAL = coro; |
961 | RETVAL = coro; |
920 | OUTPUT: |
962 | OUTPUT: |
921 | RETVAL |
963 | RETVAL |
922 | |
964 | |
923 | void |
965 | void |
924 | transfer(prev, next, flags) |
966 | transfer(prev, next, flags) |
925 | Coro::State_or_hashref prev |
967 | SV *prev |
926 | Coro::State_or_hashref next |
968 | SV *next |
927 | int flags |
969 | int flags |
928 | PROTOTYPE: @ |
970 | PROTOTYPE: @ |
929 | CODE: |
971 | CODE: |
930 | PUTBACK; |
972 | PUTBACK; |
|
|
973 | SV_CORO (next, "Coro::transfer"); |
|
|
974 | SV_CORO (prev, "Coro::transfer"); |
931 | transfer (aTHX_ prev, next, flags); |
975 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
932 | SPAGAIN; |
976 | SPAGAIN; |
933 | |
977 | |
934 | void |
978 | void |
935 | DESTROY(coro) |
979 | DESTROY(coro) |
936 | Coro::State coro |
980 | Coro::State coro |
… | |
… | |
952 | |
996 | |
953 | coro->mainstack = 0; |
997 | coro->mainstack = 0; |
954 | } |
998 | } |
955 | |
999 | |
956 | deallocate_stack (coro); |
1000 | deallocate_stack (coro); |
957 | |
1001 | SvREFCNT_dec (coro->args); |
958 | Safefree (coro); |
1002 | Safefree (coro); |
959 | |
|
|
960 | void |
|
|
961 | flush() |
|
|
962 | CODE: |
|
|
963 | #ifdef MAY_FLUSH |
|
|
964 | flush_padlist_cache (); |
|
|
965 | #endif |
|
|
966 | |
1003 | |
967 | void |
1004 | void |
968 | _exit(code) |
1005 | _exit(code) |
969 | int code |
1006 | int code |
970 | PROTOTYPE: $ |
1007 | PROTOTYPE: $ |
971 | CODE: |
1008 | CODE: |
972 | #if defined(__GLIBC__) || _POSIX_C_SOURCE |
|
|
973 | _exit (code); |
1009 | _exit (code); |
974 | #else |
|
|
975 | signal (SIGTERM, SIG_DFL); |
|
|
976 | raise (SIGTERM); |
|
|
977 | exit (code); |
|
|
978 | #endif |
|
|
979 | |
1010 | |
980 | MODULE = Coro::State PACKAGE = Coro::Cont |
1011 | MODULE = Coro::State PACKAGE = Coro::Cont |
981 | |
1012 | |
982 | # this is slightly dirty (should expose a c-level api) |
1013 | # this is slightly dirty (should expose a c-level api) |
983 | |
1014 | |
… | |
… | |
989 | SV *sv; |
1020 | SV *sv; |
990 | AV *defav = GvAV (PL_defgv); |
1021 | AV *defav = GvAV (PL_defgv); |
991 | struct coro *prev, *next; |
1022 | struct coro *prev, *next; |
992 | |
1023 | |
993 | if (!returnstk) |
1024 | if (!returnstk) |
994 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
1025 | returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE)); |
995 | |
1026 | |
996 | /* set up @_ -- ugly */ |
1027 | /* set up @_ -- ugly */ |
997 | av_clear (defav); |
1028 | av_clear (defav); |
998 | av_fill (defav, items - 1); |
1029 | av_fill (defav, items - 1); |
999 | while (items--) |
1030 | while (items--) |
… | |
… | |
1031 | |
1062 | |
1032 | { |
1063 | { |
1033 | SV *sv = perl_get_sv("Coro::API", 1); |
1064 | SV *sv = perl_get_sv("Coro::API", 1); |
1034 | |
1065 | |
1035 | coroapi.schedule = api_schedule; |
1066 | coroapi.schedule = api_schedule; |
|
|
1067 | coroapi.cede = api_cede; |
1036 | coroapi.ready = api_ready; |
1068 | coroapi.ready = api_ready; |
1037 | coroapi.nready = &coro_nready; |
1069 | coroapi.nready = &coro_nready; |
1038 | coroapi.current = coro_current; |
1070 | coroapi.current = coro_current; |
1039 | |
1071 | |
1040 | GCoroAPI = &coroapi; |
1072 | GCoroAPI = &coroapi; |
1041 | sv_setiv(sv, (IV)&coroapi); |
1073 | sv_setiv(sv, (IV)&coroapi); |
1042 | SvREADONLY_on(sv); |
1074 | SvREADONLY_on(sv); |
1043 | } |
1075 | } |
1044 | } |
1076 | } |
|
|
1077 | |
|
|
1078 | #if !PERL_MICRO |
1045 | |
1079 | |
1046 | void |
1080 | void |
1047 | ready(self) |
1081 | ready(self) |
1048 | SV * self |
1082 | SV * self |
1049 | PROTOTYPE: $ |
1083 | PROTOTYPE: $ |
1050 | CODE: |
1084 | CODE: |
1051 | api_ready (self); |
1085 | api_ready (self); |
|
|
1086 | |
|
|
1087 | #endif |
1052 | |
1088 | |
1053 | int |
1089 | int |
1054 | nready(...) |
1090 | nready(...) |
1055 | PROTOTYPE: |
1091 | PROTOTYPE: |
1056 | CODE: |
1092 | CODE: |
… | |
… | |
1059 | RETVAL |
1095 | RETVAL |
1060 | |
1096 | |
1061 | void |
1097 | void |
1062 | schedule(...) |
1098 | schedule(...) |
1063 | PROTOTYPE: |
1099 | PROTOTYPE: |
1064 | ALIAS: |
|
|
1065 | cede = 1 |
|
|
1066 | CODE: |
1100 | CODE: |
1067 | api_schedule (ix); |
1101 | api_schedule (); |
1068 | |
1102 | |
|
|
1103 | void |
|
|
1104 | cede(...) |
|
|
1105 | PROTOTYPE: |
|
|
1106 | CODE: |
|
|
1107 | api_cede (); |
|
|
1108 | |