1 | #include "libcoro/coro.c" |
1 | #include "libcoro/coro.c" |
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2 | |
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3 | #define PERL_NO_GET_CONTEXT |
2 | |
4 | |
3 | #include "EXTERN.h" |
5 | #include "EXTERN.h" |
4 | #include "perl.h" |
6 | #include "perl.h" |
5 | #include "XSUB.h" |
7 | #include "XSUB.h" |
6 | |
8 | |
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31 | #else |
33 | #else |
32 | # define PAGESIZE 0 |
34 | # define PAGESIZE 0 |
33 | # define BOOT_PAGESIZE (void)0 |
35 | # define BOOT_PAGESIZE (void)0 |
34 | #endif |
36 | #endif |
35 | |
37 | |
36 | #if USE_VALGRIND |
38 | #if CORO_USE_VALGRIND |
37 | # include <valgrind/valgrind.h> |
39 | # include <valgrind/valgrind.h> |
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40 | # define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end)) |
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41 | #else |
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42 | # define REGISTER_STACK(cctx,start,end) |
38 | #endif |
43 | #endif |
39 | |
44 | |
40 | /* the maximum number of idle cctx that will be pooled */ |
45 | /* the maximum number of idle cctx that will be pooled */ |
41 | #define MAX_IDLE_CCTX 8 |
46 | #define MAX_IDLE_CCTX 8 |
42 | |
47 | |
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71 | #ifndef SvRV_set |
76 | #ifndef SvRV_set |
72 | # define SvRV_set(s,v) SvRV(s) = (v) |
77 | # define SvRV_set(s,v) SvRV(s) = (v) |
73 | #endif |
78 | #endif |
74 | |
79 | |
75 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
80 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
76 | # undef STACKGUARD |
81 | # undef CORO_STACKGUARD |
77 | #endif |
82 | #endif |
78 | |
83 | |
79 | #ifndef STACKGUARD |
84 | #ifndef CORO_STACKGUARD |
80 | # define STACKGUARD 0 |
85 | # define CORO_STACKGUARD 0 |
81 | #endif |
86 | #endif |
82 | |
87 | |
83 | /* prefer perl internal functions over our own? */ |
88 | /* prefer perl internal functions over our own? */ |
84 | #ifndef PREFER_PERL_FUNCTIONS |
89 | #ifndef CORO_PREFER_PERL_FUNCTIONS |
85 | # define PREFER_PERL_FUNCTIONS 0 |
90 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
86 | #endif |
91 | #endif |
87 | |
92 | |
88 | /* The next macro should declare a variable stacklevel that contains and approximation |
93 | /* The next macro should declare a variable stacklevel that contains and approximation |
89 | * to the current C stack pointer. Its property is that it changes with each call |
94 | * to the current C stack pointer. Its property is that it changes with each call |
90 | * and should be unique. */ |
95 | * and should be unique. */ |
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112 | #else |
117 | #else |
113 | # define LOCK (void)0 |
118 | # define LOCK (void)0 |
114 | # define UNLOCK (void)0 |
119 | # define UNLOCK (void)0 |
115 | #endif |
120 | #endif |
116 | |
121 | |
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122 | /* helper storage struct for Coro::AIO */ |
117 | struct io_state |
123 | struct io_state |
118 | { |
124 | { |
119 | int errorno; |
125 | int errorno; |
120 | I32 laststype; |
126 | I32 laststype; |
121 | int laststatval; |
127 | int laststatval; |
122 | Stat_t statcache; |
128 | Stat_t statcache; |
123 | }; |
129 | }; |
124 | |
130 | |
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131 | static size_t coro_stacksize = CORO_STACKSIZE; |
125 | static struct CoroAPI coroapi; |
132 | static struct CoroAPI coroapi; |
126 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
133 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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134 | static JMPENV *main_top_env; |
127 | static HV *coro_state_stash, *coro_stash; |
135 | static HV *coro_state_stash, *coro_stash; |
128 | static SV *coro_mortal; /* will be freed after next transfer */ |
136 | static SV *coro_mortal; /* will be freed after next transfer */ |
129 | |
137 | |
130 | static struct coro_cctx *cctx_first; |
138 | static struct coro_cctx *cctx_first; |
131 | static int cctx_count, cctx_idle; |
139 | static int cctx_count, cctx_idle; |
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134 | typedef struct coro_cctx { |
142 | typedef struct coro_cctx { |
135 | struct coro_cctx *next; |
143 | struct coro_cctx *next; |
136 | |
144 | |
137 | /* the stack */ |
145 | /* the stack */ |
138 | void *sptr; |
146 | void *sptr; |
139 | long ssize; /* positive == mmap, otherwise malloc */ |
147 | size_t ssize; |
140 | |
148 | |
141 | /* cpu state */ |
149 | /* cpu state */ |
142 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
150 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
143 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
151 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
144 | JMPENV *top_env; |
152 | JMPENV *top_env; |
145 | coro_context cctx; |
153 | coro_context cctx; |
146 | |
154 | |
147 | int inuse; |
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148 | |
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149 | #if USE_VALGRIND |
155 | #if CORO_USE_VALGRIND |
150 | int valgrind_id; |
156 | int valgrind_id; |
151 | #endif |
157 | #endif |
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158 | char inuse, mapped; |
152 | } coro_cctx; |
159 | } coro_cctx; |
153 | |
160 | |
154 | enum { |
161 | enum { |
155 | CF_RUNNING = 0x0001, /* coroutine is running */ |
162 | CF_RUNNING = 0x0001, /* coroutine is running */ |
156 | CF_READY = 0x0002, /* coroutine is ready */ |
163 | CF_READY = 0x0002, /* coroutine is ready */ |
157 | CF_NEW = 0x0004, /* ahs never been switched to */ |
164 | CF_NEW = 0x0004, /* has never been switched to */ |
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165 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
158 | }; |
166 | }; |
159 | |
167 | |
160 | /* this is a structure representing a perl-level coroutine */ |
168 | /* this is a structure representing a perl-level coroutine */ |
161 | struct coro { |
169 | struct coro { |
162 | /* the c coroutine allocated to this perl coroutine, if any */ |
170 | /* the c coroutine allocated to this perl coroutine, if any */ |
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170 | |
178 | |
171 | /* optionally saved, might be zero */ |
179 | /* optionally saved, might be zero */ |
172 | AV *defav; /* @_ */ |
180 | AV *defav; /* @_ */ |
173 | SV *defsv; /* $_ */ |
181 | SV *defsv; /* $_ */ |
174 | SV *errsv; /* $@ */ |
182 | SV *errsv; /* $@ */ |
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183 | GV *deffh; /* default filehandle */ |
175 | SV *irssv; /* $/ */ |
184 | SV *irssv; /* $/ */ |
176 | SV *irssv_sv; /* real $/ cache */ |
185 | SV *irssv_sv; /* real $/ cache */ |
177 | |
186 | |
178 | #define VAR(name,type) type name; |
187 | #define VAR(name,type) type name; |
179 | # include "state.h" |
188 | # include "state.h" |
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184 | }; |
193 | }; |
185 | |
194 | |
186 | typedef struct coro *Coro__State; |
195 | typedef struct coro *Coro__State; |
187 | typedef struct coro *Coro__State_or_hashref; |
196 | typedef struct coro *Coro__State_or_hashref; |
188 | |
197 | |
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198 | /** Coro ********************************************************************/ |
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199 | |
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200 | #define PRIO_MAX 3 |
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201 | #define PRIO_HIGH 1 |
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202 | #define PRIO_NORMAL 0 |
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203 | #define PRIO_LOW -1 |
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204 | #define PRIO_IDLE -3 |
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205 | #define PRIO_MIN -4 |
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206 | |
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207 | /* for Coro.pm */ |
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208 | static SV *coro_current; |
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209 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
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210 | static int coro_nready; |
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211 | |
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212 | /** lowlevel stuff **********************************************************/ |
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213 | |
189 | static AV * |
214 | static AV * |
190 | coro_clone_padlist (CV *cv) |
215 | coro_clone_padlist (pTHX_ CV *cv) |
191 | { |
216 | { |
192 | AV *padlist = CvPADLIST (cv); |
217 | AV *padlist = CvPADLIST (cv); |
193 | AV *newpadlist, *newpad; |
218 | AV *newpadlist, *newpad; |
194 | |
219 | |
195 | newpadlist = newAV (); |
220 | newpadlist = newAV (); |
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207 | |
232 | |
208 | return newpadlist; |
233 | return newpadlist; |
209 | } |
234 | } |
210 | |
235 | |
211 | static void |
236 | static void |
212 | free_padlist (AV *padlist) |
237 | free_padlist (pTHX_ AV *padlist) |
213 | { |
238 | { |
214 | /* may be during global destruction */ |
239 | /* may be during global destruction */ |
215 | if (SvREFCNT (padlist)) |
240 | if (SvREFCNT (padlist)) |
216 | { |
241 | { |
217 | I32 i = AvFILLp (padlist); |
242 | I32 i = AvFILLp (padlist); |
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238 | AV *padlist; |
263 | AV *padlist; |
239 | AV *av = (AV *)mg->mg_obj; |
264 | AV *av = (AV *)mg->mg_obj; |
240 | |
265 | |
241 | /* casting is fun. */ |
266 | /* casting is fun. */ |
242 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
267 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
243 | free_padlist (padlist); |
268 | free_padlist (aTHX_ padlist); |
244 | |
269 | |
245 | SvREFCNT_dec (av); |
270 | SvREFCNT_dec (av); |
246 | |
271 | |
247 | return 0; |
272 | return 0; |
248 | } |
273 | } |
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258 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
283 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
259 | : 0 |
284 | : 0 |
260 | |
285 | |
261 | /* the next two functions merely cache the padlists */ |
286 | /* the next two functions merely cache the padlists */ |
262 | static void |
287 | static void |
263 | get_padlist (CV *cv) |
288 | get_padlist (pTHX_ CV *cv) |
264 | { |
289 | { |
265 | MAGIC *mg = CORO_MAGIC (cv); |
290 | MAGIC *mg = CORO_MAGIC (cv); |
266 | AV *av; |
291 | AV *av; |
267 | |
292 | |
268 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
293 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
269 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
294 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
270 | else |
295 | else |
271 | { |
296 | { |
272 | #if PREFER_PERL_FUNCTIONS |
297 | #if CORO_PREFER_PERL_FUNCTIONS |
273 | /* this is probably cleaner, but also slower? */ |
298 | /* this is probably cleaner, but also slower? */ |
274 | CV *cp = Perl_cv_clone (cv); |
299 | CV *cp = Perl_cv_clone (cv); |
275 | CvPADLIST (cv) = CvPADLIST (cp); |
300 | CvPADLIST (cv) = CvPADLIST (cp); |
276 | CvPADLIST (cp) = 0; |
301 | CvPADLIST (cp) = 0; |
277 | SvREFCNT_dec (cp); |
302 | SvREFCNT_dec (cp); |
278 | #else |
303 | #else |
279 | CvPADLIST (cv) = coro_clone_padlist (cv); |
304 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
280 | #endif |
305 | #endif |
281 | } |
306 | } |
282 | } |
307 | } |
283 | |
308 | |
284 | static void |
309 | static void |
285 | put_padlist (CV *cv) |
310 | put_padlist (pTHX_ CV *cv) |
286 | { |
311 | { |
287 | MAGIC *mg = CORO_MAGIC (cv); |
312 | MAGIC *mg = CORO_MAGIC (cv); |
288 | AV *av; |
313 | AV *av; |
289 | |
314 | |
290 | if (!mg) |
315 | if (!mg) |
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301 | av_extend (av, AvMAX (av) + 1); |
326 | av_extend (av, AvMAX (av) + 1); |
302 | |
327 | |
303 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
328 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
304 | } |
329 | } |
305 | |
330 | |
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331 | /** load & save, init *******************************************************/ |
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332 | |
306 | #define SB do { |
333 | #define SB do { |
307 | #define SE } while (0) |
334 | #define SE } while (0) |
308 | |
335 | |
309 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
336 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
310 | |
337 | |
311 | static void |
338 | static void |
312 | load_perl (Coro__State c) |
339 | load_perl (pTHX_ Coro__State c) |
313 | { |
340 | { |
314 | #define VAR(name,type) PL_ ## name = c->name; |
341 | #define VAR(name,type) PL_ ## name = c->name; |
315 | # include "state.h" |
342 | # include "state.h" |
316 | #undef VAR |
343 | #undef VAR |
317 | |
344 | |
318 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
345 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
319 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
346 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
320 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
347 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
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348 | if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh); |
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349 | |
321 | if (c->irssv) |
350 | if (c->irssv) |
322 | { |
351 | { |
323 | if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv)) |
352 | if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv)) |
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353 | { |
324 | SvREFCNT_dec (c->irssv); |
354 | SvREFCNT_dec (c->irssv); |
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355 | c->irssv = 0; |
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356 | } |
325 | else |
357 | else |
326 | { |
358 | { |
327 | REPLACE_SV (PL_rs, c->irssv); |
359 | REPLACE_SV (PL_rs, c->irssv); |
328 | if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0); |
360 | if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0); |
329 | sv_setsv (c->irssv_sv, PL_rs); |
361 | sv_setsv (c->irssv_sv, PL_rs); |
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335 | CV *cv; |
367 | CV *cv; |
336 | |
368 | |
337 | /* now do the ugly restore mess */ |
369 | /* now do the ugly restore mess */ |
338 | while ((cv = (CV *)POPs)) |
370 | while ((cv = (CV *)POPs)) |
339 | { |
371 | { |
340 | put_padlist (cv); /* mark this padlist as available */ |
372 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
341 | CvDEPTH (cv) = PTR2IV (POPs); |
373 | CvDEPTH (cv) = PTR2IV (POPs); |
342 | CvPADLIST (cv) = (AV *)POPs; |
374 | CvPADLIST (cv) = (AV *)POPs; |
343 | } |
375 | } |
344 | |
376 | |
345 | PUTBACK; |
377 | PUTBACK; |
346 | } |
378 | } |
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379 | assert (!PL_comppad || AvARRAY (PL_comppad));//D |
347 | } |
380 | } |
348 | |
381 | |
349 | static void |
382 | static void |
350 | save_perl (Coro__State c) |
383 | save_perl (pTHX_ Coro__State c) |
351 | { |
384 | { |
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385 | assert (!PL_comppad || AvARRAY (PL_comppad));//D |
352 | { |
386 | { |
353 | dSP; |
387 | dSP; |
354 | I32 cxix = cxstack_ix; |
388 | I32 cxix = cxstack_ix; |
355 | PERL_CONTEXT *ccstk = cxstack; |
389 | PERL_CONTEXT *ccstk = cxstack; |
356 | PERL_SI *top_si = PL_curstackinfo; |
390 | PERL_SI *top_si = PL_curstackinfo; |
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379 | PUSHs ((SV *)CvPADLIST (cv)); |
413 | PUSHs ((SV *)CvPADLIST (cv)); |
380 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
414 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
381 | PUSHs ((SV *)cv); |
415 | PUSHs ((SV *)cv); |
382 | |
416 | |
383 | CvDEPTH (cv) = 0; |
417 | CvDEPTH (cv) = 0; |
384 | get_padlist (cv); |
418 | get_padlist (aTHX_ cv); |
385 | } |
419 | } |
386 | } |
420 | } |
387 | } |
421 | } |
388 | |
422 | |
389 | if (top_si->si_type == PERLSI_MAIN) |
423 | if (top_si->si_type == PERLSI_MAIN) |
… | |
… | |
398 | } |
432 | } |
399 | |
433 | |
400 | c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
434 | c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
401 | c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
435 | c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
402 | c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
436 | c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
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437 | c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; |
403 | c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; |
438 | c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; |
404 | |
439 | |
405 | #define VAR(name,type)c->name = PL_ ## name; |
440 | #define VAR(name,type)c->name = PL_ ## name; |
406 | # include "state.h" |
441 | # include "state.h" |
407 | #undef VAR |
442 | #undef VAR |
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411 | * allocate various perl stacks. This is an exact copy |
446 | * allocate various perl stacks. This is an exact copy |
412 | * of perl.c:init_stacks, except that it uses less memory |
447 | * of perl.c:init_stacks, except that it uses less memory |
413 | * on the (sometimes correct) assumption that coroutines do |
448 | * on the (sometimes correct) assumption that coroutines do |
414 | * not usually need a lot of stackspace. |
449 | * not usually need a lot of stackspace. |
415 | */ |
450 | */ |
416 | #if PREFER_PERL_FUNCTIONS |
451 | #if CORO_PREFER_PERL_FUNCTIONS |
417 | # define coro_init_stacks init_stacks |
452 | # define coro_init_stacks init_stacks |
418 | #else |
453 | #else |
419 | static void |
454 | static void |
420 | coro_init_stacks () |
455 | coro_init_stacks (pTHX) |
421 | { |
456 | { |
422 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
457 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
423 | PL_curstackinfo->si_type = PERLSI_MAIN; |
458 | PL_curstackinfo->si_type = PERLSI_MAIN; |
424 | PL_curstack = PL_curstackinfo->si_stack; |
459 | PL_curstack = PL_curstackinfo->si_stack; |
425 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
460 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
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459 | |
494 | |
460 | /* |
495 | /* |
461 | * destroy the stacks, the callchain etc... |
496 | * destroy the stacks, the callchain etc... |
462 | */ |
497 | */ |
463 | static void |
498 | static void |
464 | coro_destroy_stacks () |
499 | coro_destroy_stacks (pTHX) |
465 | { |
500 | { |
466 | if (!IN_DESTRUCT) |
501 | if (!IN_DESTRUCT) |
467 | { |
502 | { |
468 | /* restore all saved variables and stuff */ |
503 | /* restore all saved variables and stuff */ |
469 | LEAVE_SCOPE (0); |
504 | LEAVE_SCOPE (0); |
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471 | |
506 | |
472 | /* free all temporaries */ |
507 | /* free all temporaries */ |
473 | FREETMPS; |
508 | FREETMPS; |
474 | assert (PL_tmps_ix == -1); |
509 | assert (PL_tmps_ix == -1); |
475 | |
510 | |
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511 | /* unwind all extra stacks */ |
476 | POPSTACK_TO (PL_mainstack); |
512 | POPSTACK_TO (PL_mainstack); |
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513 | |
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514 | /* unwind main stack */ |
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515 | dounwind (-1); |
477 | } |
516 | } |
478 | |
517 | |
479 | while (PL_curstackinfo->si_next) |
518 | while (PL_curstackinfo->si_next) |
480 | PL_curstackinfo = PL_curstackinfo->si_next; |
519 | PL_curstackinfo = PL_curstackinfo->si_next; |
481 | |
520 | |
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498 | #if !PERL_VERSION_ATLEAST (5,9,0) |
537 | #if !PERL_VERSION_ATLEAST (5,9,0) |
499 | Safefree (PL_retstack); |
538 | Safefree (PL_retstack); |
500 | #endif |
539 | #endif |
501 | } |
540 | } |
502 | |
541 | |
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542 | /** coroutine stack handling ************************************************/ |
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543 | |
503 | static void |
544 | static void |
504 | setup_coro (struct coro *coro) |
545 | setup_coro (pTHX_ struct coro *coro) |
505 | { |
546 | { |
506 | /* |
547 | /* |
507 | * emulate part of the perl startup here. |
548 | * emulate part of the perl startup here. |
508 | */ |
549 | */ |
509 | |
|
|
510 | coro_init_stacks (); |
550 | coro_init_stacks (aTHX); |
511 | |
551 | |
512 | PL_curcop = &PL_compiling; |
552 | PL_curcop = &PL_compiling; |
513 | PL_in_eval = EVAL_NULL; |
553 | PL_in_eval = EVAL_NULL; |
|
|
554 | PL_comppad = 0; |
514 | PL_curpm = 0; |
555 | PL_curpm = 0; |
515 | PL_localizing = 0; |
556 | PL_localizing = 0; |
516 | PL_dirty = 0; |
557 | PL_dirty = 0; |
517 | PL_restartop = 0; |
558 | PL_restartop = 0; |
518 | |
559 | |
… | |
… | |
537 | |
578 | |
538 | ENTER; /* necessary e.g. for dounwind */ |
579 | ENTER; /* necessary e.g. for dounwind */ |
539 | } |
580 | } |
540 | |
581 | |
541 | static void |
582 | static void |
542 | free_coro_mortal () |
583 | free_coro_mortal (pTHX) |
543 | { |
584 | { |
544 | if (coro_mortal) |
585 | if (coro_mortal) |
545 | { |
586 | { |
546 | SvREFCNT_dec (coro_mortal); |
587 | SvREFCNT_dec (coro_mortal); |
547 | coro_mortal = 0; |
588 | coro_mortal = 0; |
548 | } |
589 | } |
549 | } |
590 | } |
550 | |
591 | |
551 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
592 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
|
|
593 | /* _cctx_init shoukld be careful, as it could be called at almost any time */ |
|
|
594 | /* during execution of a pelr program */ |
552 | static void NOINLINE |
595 | static void NOINLINE |
553 | prepare_cctx (coro_cctx *cctx) |
596 | prepare_cctx (pTHX_ coro_cctx *cctx) |
554 | { |
597 | { |
555 | dSP; |
598 | dSP; |
556 | LOGOP myop; |
599 | LOGOP myop; |
557 | |
600 | |
558 | Zero (&myop, 1, LOGOP); |
601 | Zero (&myop, 1, LOGOP); |
… | |
… | |
567 | PL_op = (OP *)&myop; |
610 | PL_op = (OP *)&myop; |
568 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
611 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
569 | SPAGAIN; |
612 | SPAGAIN; |
570 | } |
613 | } |
571 | |
614 | |
|
|
615 | /* |
|
|
616 | * this is a _very_ stripped down perl interpreter ;) |
|
|
617 | */ |
572 | static void |
618 | static void |
573 | coro_run (void *arg) |
619 | coro_run (void *arg) |
574 | { |
620 | { |
|
|
621 | dTHX; |
|
|
622 | |
575 | /* coro_run is the alternative tail of transfer(), so unlock here. */ |
623 | /* coro_run is the alternative tail of transfer(), so unlock here. */ |
576 | UNLOCK; |
624 | UNLOCK; |
577 | |
625 | |
578 | /* |
|
|
579 | * this is a _very_ stripped down perl interpreter ;) |
|
|
580 | */ |
|
|
581 | PL_top_env = &PL_start_env; |
626 | PL_top_env = &PL_start_env; |
582 | |
627 | |
583 | /* inject call to cctx_init */ |
628 | /* inject a fake subroutine call to cctx_init */ |
584 | prepare_cctx ((coro_cctx *)arg); |
629 | prepare_cctx (aTHX_ (coro_cctx *)arg); |
585 | |
630 | |
586 | /* somebody will hit me for both perl_run and PL_restartop */ |
631 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
587 | PL_restartop = PL_op; |
632 | PL_restartop = PL_op; |
588 | perl_run (PL_curinterp); |
633 | perl_run (PL_curinterp); |
589 | |
634 | |
590 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
635 | /* If perl-run returns we assume exit() was being called, which */ |
591 | abort (); |
636 | /* seems to be the only valid (non-bug) reason for perl_run to return. */ |
|
|
637 | /* We try to exit by jumping to the bootstrap-time "top" top_env, as */ |
|
|
638 | /* we cannot restore the "main" coroutine as Coro has no such concept */ |
|
|
639 | PL_top_env = main_top_env; |
|
|
640 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
592 | } |
641 | } |
593 | |
642 | |
594 | static coro_cctx * |
643 | static coro_cctx * |
595 | cctx_new () |
644 | cctx_new () |
596 | { |
645 | { |
597 | coro_cctx *cctx; |
646 | coro_cctx *cctx; |
|
|
647 | void *stack_start; |
|
|
648 | size_t stack_size; |
598 | |
649 | |
599 | ++cctx_count; |
650 | ++cctx_count; |
600 | |
651 | |
601 | Newz (0, cctx, 1, coro_cctx); |
652 | Newz (0, cctx, 1, coro_cctx); |
602 | |
653 | |
603 | #if HAVE_MMAP |
654 | #if HAVE_MMAP |
604 | |
655 | |
605 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
656 | cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
606 | /* mmap supposedly does allocate-on-write for us */ |
657 | /* mmap supposedly does allocate-on-write for us */ |
607 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
658 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
608 | |
659 | |
609 | if (cctx->sptr == (void *)-1) |
660 | if (cctx->sptr != (void *)-1) |
610 | { |
|
|
611 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
612 | _exit (EXIT_FAILURE); |
|
|
613 | } |
661 | { |
614 | |
|
|
615 | # if STACKGUARD |
662 | # if CORO_STACKGUARD |
616 | mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
663 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
617 | # endif |
664 | # endif |
|
|
665 | stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
|
|
666 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
|
|
667 | cctx->mapped = 1; |
|
|
668 | } |
|
|
669 | else |
|
|
670 | #endif |
|
|
671 | { |
|
|
672 | cctx->ssize = coro_stacksize * (long)sizeof (long); |
|
|
673 | New (0, cctx->sptr, coro_stacksize, long); |
618 | |
674 | |
619 | #else |
|
|
620 | |
|
|
621 | cctx->ssize = STACKSIZE * (long)sizeof (long); |
|
|
622 | New (0, cctx->sptr, STACKSIZE, long); |
|
|
623 | |
|
|
624 | if (!cctx->sptr) |
675 | if (!cctx->sptr) |
625 | { |
676 | { |
626 | perror ("FATAL: unable to malloc stack for coroutine"); |
677 | perror ("FATAL: unable to allocate stack for coroutine"); |
627 | _exit (EXIT_FAILURE); |
678 | _exit (EXIT_FAILURE); |
628 | } |
679 | } |
629 | |
680 | |
630 | #endif |
681 | stack_start = cctx->sptr; |
|
|
682 | stack_size = cctx->ssize; |
|
|
683 | } |
631 | |
684 | |
632 | #if USE_VALGRIND |
685 | REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
633 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ( |
|
|
634 | STACKGUARD * PAGESIZE + (char *)cctx->sptr, |
|
|
635 | cctx->ssize + (char *)cctx->sptr |
|
|
636 | ); |
|
|
637 | #endif |
|
|
638 | |
|
|
639 | coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize); |
686 | coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); |
640 | |
687 | |
641 | return cctx; |
688 | return cctx; |
642 | } |
689 | } |
643 | |
690 | |
644 | static void |
691 | static void |
… | |
… | |
647 | if (!cctx) |
694 | if (!cctx) |
648 | return; |
695 | return; |
649 | |
696 | |
650 | --cctx_count; |
697 | --cctx_count; |
651 | |
698 | |
652 | #if USE_VALGRIND |
699 | #if CORO_USE_VALGRIND |
653 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
700 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
654 | #endif |
701 | #endif |
655 | |
702 | |
656 | #if HAVE_MMAP |
703 | #if HAVE_MMAP |
|
|
704 | if (cctx->mapped) |
657 | munmap (cctx->sptr, cctx->ssize); |
705 | munmap (cctx->sptr, cctx->ssize); |
658 | #else |
706 | else |
|
|
707 | #endif |
659 | Safefree (cctx->sptr); |
708 | Safefree (cctx->sptr); |
660 | #endif |
|
|
661 | |
709 | |
662 | Safefree (cctx); |
710 | Safefree (cctx); |
663 | } |
711 | } |
664 | |
712 | |
665 | static coro_cctx * |
713 | static coro_cctx * |
666 | cctx_get () |
714 | cctx_get (pTHX) |
667 | { |
715 | { |
668 | coro_cctx *cctx; |
|
|
669 | |
|
|
670 | if (cctx_first) |
716 | while (cctx_first) |
671 | { |
717 | { |
672 | cctx = cctx_first; |
718 | coro_cctx *cctx = cctx_first; |
673 | cctx_first = cctx->next; |
719 | cctx_first = cctx->next; |
674 | --cctx_idle; |
720 | --cctx_idle; |
|
|
721 | |
|
|
722 | if (cctx->ssize >= coro_stacksize) |
|
|
723 | return cctx; |
|
|
724 | |
|
|
725 | cctx_destroy (cctx); |
675 | } |
726 | } |
676 | else |
727 | |
677 | { |
|
|
678 | cctx = cctx_new (); |
|
|
679 | PL_op = PL_op->op_next; |
728 | PL_op = PL_op->op_next; |
680 | } |
|
|
681 | |
|
|
682 | return cctx; |
729 | return cctx_new (); |
683 | } |
730 | } |
684 | |
731 | |
685 | static void |
732 | static void |
686 | cctx_put (coro_cctx *cctx) |
733 | cctx_put (coro_cctx *cctx) |
687 | { |
734 | { |
… | |
… | |
699 | ++cctx_idle; |
746 | ++cctx_idle; |
700 | cctx->next = cctx_first; |
747 | cctx->next = cctx_first; |
701 | cctx_first = cctx; |
748 | cctx_first = cctx; |
702 | } |
749 | } |
703 | |
750 | |
|
|
751 | /** coroutine switching *****************************************************/ |
|
|
752 | |
704 | /* never call directly, always through the coro_state_transfer global variable */ |
753 | /* never call directly, always through the coro_state_transfer global variable */ |
705 | static void NOINLINE |
754 | static void NOINLINE |
706 | transfer (struct coro *prev, struct coro *next) |
755 | transfer (pTHX_ struct coro *prev, struct coro *next) |
707 | { |
756 | { |
708 | dSTACKLEVEL; |
757 | dSTACKLEVEL; |
709 | |
758 | |
710 | /* sometimes transfer is only called to set idle_sp */ |
759 | /* sometimes transfer is only called to set idle_sp */ |
711 | if (!next) |
760 | if (!next) |
… | |
… | |
731 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
780 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
732 | |
781 | |
733 | if (next->flags & CF_RUNNING) |
782 | if (next->flags & CF_RUNNING) |
734 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
783 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
735 | |
784 | |
|
|
785 | if (next->flags & CF_DESTROYED) |
|
|
786 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
|
|
787 | |
736 | prev->flags &= ~CF_RUNNING; |
788 | prev->flags &= ~CF_RUNNING; |
737 | next->flags |= CF_RUNNING; |
789 | next->flags |= CF_RUNNING; |
738 | |
790 | |
739 | LOCK; |
791 | LOCK; |
740 | |
792 | |
741 | if (next->flags & CF_NEW) |
793 | if (next->flags & CF_NEW) |
742 | { |
794 | { |
743 | /* need to start coroutine */ |
795 | /* need to start coroutine */ |
744 | next->flags &= ~CF_NEW; |
796 | next->flags &= ~CF_NEW; |
745 | /* first get rid of the old state */ |
797 | /* first get rid of the old state */ |
746 | save_perl (prev); |
798 | save_perl (aTHX_ prev); |
747 | /* setup coroutine call */ |
799 | /* setup coroutine call */ |
748 | setup_coro (next); |
800 | setup_coro (aTHX_ next); |
749 | /* need a new stack */ |
801 | /* need a new stack */ |
750 | assert (!next->cctx); |
802 | assert (!next->cctx); |
751 | } |
803 | } |
752 | else |
804 | else |
753 | { |
805 | { |
754 | /* coroutine already started */ |
806 | /* coroutine already started */ |
755 | save_perl (prev); |
807 | save_perl (aTHX_ prev); |
756 | load_perl (next); |
808 | load_perl (aTHX_ next); |
757 | } |
809 | } |
758 | |
810 | |
759 | prev__cctx = prev->cctx; |
811 | prev__cctx = prev->cctx; |
760 | |
812 | |
761 | /* possibly "free" the cctx */ |
813 | /* possibly "free" the cctx */ |
… | |
… | |
770 | prev__cctx->inuse = 0; |
822 | prev__cctx->inuse = 0; |
771 | } |
823 | } |
772 | |
824 | |
773 | if (!next->cctx) |
825 | if (!next->cctx) |
774 | { |
826 | { |
775 | next->cctx = cctx_get (); |
827 | next->cctx = cctx_get (aTHX); |
776 | assert (!next->cctx->inuse); |
828 | assert (!next->cctx->inuse); |
777 | next->cctx->inuse = 1; |
829 | next->cctx->inuse = 1; |
778 | } |
830 | } |
779 | |
831 | |
780 | if (prev__cctx != next->cctx) |
832 | if (prev__cctx != next->cctx) |
… | |
… | |
782 | prev__cctx->top_env = PL_top_env; |
834 | prev__cctx->top_env = PL_top_env; |
783 | PL_top_env = next->cctx->top_env; |
835 | PL_top_env = next->cctx->top_env; |
784 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
836 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
785 | } |
837 | } |
786 | |
838 | |
787 | free_coro_mortal (); |
839 | free_coro_mortal (aTHX); |
788 | |
|
|
789 | UNLOCK; |
840 | UNLOCK; |
790 | } |
841 | } |
791 | } |
842 | } |
792 | |
843 | |
793 | struct transfer_args |
844 | struct transfer_args |
794 | { |
845 | { |
795 | struct coro *prev, *next; |
846 | struct coro *prev, *next; |
796 | }; |
847 | }; |
797 | |
848 | |
798 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next) |
849 | #define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) |
799 | |
850 | |
|
|
851 | /** high level stuff ********************************************************/ |
|
|
852 | |
800 | static void |
853 | static int |
801 | coro_state_destroy (struct coro *coro) |
854 | coro_state_destroy (pTHX_ struct coro *coro) |
802 | { |
855 | { |
803 | if (coro->refcnt--) |
856 | if (coro->flags & CF_DESTROYED) |
804 | return; |
857 | return 0; |
|
|
858 | |
|
|
859 | coro->flags |= CF_DESTROYED; |
|
|
860 | |
|
|
861 | if (coro->flags & CF_READY) |
|
|
862 | { |
|
|
863 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
864 | /* alternative: look through all ready queues and remove the coro */ |
|
|
865 | LOCK; |
|
|
866 | --coro_nready; |
|
|
867 | UNLOCK; |
|
|
868 | } |
|
|
869 | else |
|
|
870 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
805 | |
871 | |
806 | if (coro->mainstack && coro->mainstack != main_mainstack) |
872 | if (coro->mainstack && coro->mainstack != main_mainstack) |
807 | { |
873 | { |
808 | struct coro temp; |
874 | struct coro temp; |
|
|
875 | |
|
|
876 | assert (!(coro->flags & CF_RUNNING)); |
|
|
877 | |
809 | Zero (&temp, 1, struct coro); |
878 | Zero (&temp, 1, struct coro); |
810 | temp.save = CORO_SAVE_ALL; |
879 | temp.save = CORO_SAVE_DEF; |
811 | |
880 | |
812 | if (coro->flags & CF_RUNNING) |
881 | if (coro->flags & CF_RUNNING) |
813 | croak ("FATAL: tried to destroy currently running coroutine"); |
882 | croak ("FATAL: tried to destroy currently running coroutine"); |
814 | |
883 | |
815 | save_perl (&temp); |
884 | save_perl (aTHX_ &temp); |
816 | load_perl (coro); |
885 | load_perl (aTHX_ coro); |
817 | |
886 | |
818 | coro_destroy_stacks (); |
887 | coro_destroy_stacks (aTHX); |
819 | |
888 | |
820 | load_perl (&temp); /* this will get rid of defsv etc.. */ |
889 | load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ |
821 | |
890 | |
822 | coro->mainstack = 0; |
891 | coro->mainstack = 0; |
823 | } |
892 | } |
824 | |
893 | |
825 | cctx_destroy (coro->cctx); |
894 | cctx_destroy (coro->cctx); |
826 | SvREFCNT_dec (coro->args); |
895 | SvREFCNT_dec (coro->args); |
827 | Safefree (coro); |
896 | |
|
|
897 | return 1; |
828 | } |
898 | } |
829 | |
899 | |
830 | static int |
900 | static int |
831 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
901 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
832 | { |
902 | { |
833 | struct coro *coro = (struct coro *)mg->mg_ptr; |
903 | struct coro *coro = (struct coro *)mg->mg_ptr; |
834 | mg->mg_ptr = 0; |
904 | mg->mg_ptr = 0; |
835 | |
905 | |
|
|
906 | if (--coro->refcnt < 0) |
|
|
907 | { |
836 | coro_state_destroy (coro); |
908 | coro_state_destroy (aTHX_ coro); |
|
|
909 | Safefree (coro); |
|
|
910 | } |
837 | |
911 | |
838 | return 0; |
912 | return 0; |
839 | } |
913 | } |
840 | |
914 | |
841 | static int |
915 | static int |
… | |
… | |
848 | return 0; |
922 | return 0; |
849 | } |
923 | } |
850 | |
924 | |
851 | static MGVTBL coro_state_vtbl = { |
925 | static MGVTBL coro_state_vtbl = { |
852 | 0, 0, 0, 0, |
926 | 0, 0, 0, 0, |
853 | coro_state_clear, |
927 | coro_state_free, |
854 | 0, |
928 | 0, |
855 | #ifdef MGf_DUP |
929 | #ifdef MGf_DUP |
856 | coro_state_dup, |
930 | coro_state_dup, |
857 | #else |
931 | #else |
858 | # define MGf_DUP 0 |
932 | # define MGf_DUP 0 |
859 | #endif |
933 | #endif |
860 | }; |
934 | }; |
861 | |
935 | |
862 | static struct coro * |
936 | static struct coro * |
863 | SvSTATE (SV *coro) |
937 | SvSTATE_ (pTHX_ SV *coro) |
864 | { |
938 | { |
865 | HV *stash; |
939 | HV *stash; |
866 | MAGIC *mg; |
940 | MAGIC *mg; |
867 | |
941 | |
868 | if (SvROK (coro)) |
942 | if (SvROK (coro)) |
… | |
… | |
874 | /* very slow, but rare, check */ |
948 | /* very slow, but rare, check */ |
875 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
949 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
876 | croak ("Coro::State object required"); |
950 | croak ("Coro::State object required"); |
877 | } |
951 | } |
878 | |
952 | |
879 | mg = SvMAGIC (coro); |
953 | mg = CORO_MAGIC (coro); |
880 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
881 | return (struct coro *)mg->mg_ptr; |
954 | return (struct coro *)mg->mg_ptr; |
882 | } |
955 | } |
883 | |
956 | |
|
|
957 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
|
|
958 | |
884 | static void |
959 | static void |
885 | prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
960 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
886 | { |
961 | { |
887 | ta->prev = SvSTATE (prev_sv); |
962 | ta->prev = SvSTATE (prev_sv); |
888 | ta->next = SvSTATE (next_sv); |
963 | ta->next = SvSTATE (next_sv); |
889 | } |
964 | } |
890 | |
965 | |
891 | static void |
966 | static void |
892 | api_transfer (SV *prev_sv, SV *next_sv) |
967 | api_transfer (SV *prev_sv, SV *next_sv) |
893 | { |
968 | { |
|
|
969 | dTHX; |
894 | struct transfer_args ta; |
970 | struct transfer_args ta; |
895 | |
971 | |
896 | prepare_transfer (&ta, prev_sv, next_sv); |
972 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
897 | TRANSFER (ta); |
973 | TRANSFER (ta); |
898 | } |
974 | } |
899 | |
975 | |
900 | static int |
976 | static int |
901 | api_save (SV *coro_sv, int new_save) |
977 | api_save (SV *coro_sv, int new_save) |
902 | { |
978 | { |
|
|
979 | dTHX; |
903 | struct coro *coro = SvSTATE (coro_sv); |
980 | struct coro *coro = SvSTATE (coro_sv); |
904 | int old_save = coro->save; |
981 | int old_save = coro->save; |
905 | |
982 | |
906 | if (new_save >= 0) |
983 | if (new_save >= 0) |
907 | coro->save = new_save; |
984 | coro->save = new_save; |
… | |
… | |
909 | return old_save; |
986 | return old_save; |
910 | } |
987 | } |
911 | |
988 | |
912 | /** Coro ********************************************************************/ |
989 | /** Coro ********************************************************************/ |
913 | |
990 | |
914 | #define PRIO_MAX 3 |
|
|
915 | #define PRIO_HIGH 1 |
|
|
916 | #define PRIO_NORMAL 0 |
|
|
917 | #define PRIO_LOW -1 |
|
|
918 | #define PRIO_IDLE -3 |
|
|
919 | #define PRIO_MIN -4 |
|
|
920 | |
|
|
921 | /* for Coro.pm */ |
|
|
922 | static SV *coro_current; |
|
|
923 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
|
|
924 | static int coro_nready; |
|
|
925 | |
|
|
926 | static void |
991 | static void |
927 | coro_enq (SV *coro_sv) |
992 | coro_enq (pTHX_ SV *coro_sv) |
928 | { |
993 | { |
929 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
994 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
930 | coro_nready++; |
|
|
931 | } |
995 | } |
932 | |
996 | |
933 | static SV * |
997 | static SV * |
934 | coro_deq (int min_prio) |
998 | coro_deq (pTHX_ int min_prio) |
935 | { |
999 | { |
936 | int prio = PRIO_MAX - PRIO_MIN; |
1000 | int prio = PRIO_MAX - PRIO_MIN; |
937 | |
1001 | |
938 | min_prio -= PRIO_MIN; |
1002 | min_prio -= PRIO_MIN; |
939 | if (min_prio < 0) |
1003 | if (min_prio < 0) |
940 | min_prio = 0; |
1004 | min_prio = 0; |
941 | |
1005 | |
942 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
1006 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
943 | if (AvFILLp (coro_ready [prio]) >= 0) |
1007 | if (AvFILLp (coro_ready [prio]) >= 0) |
944 | { |
|
|
945 | coro_nready--; |
|
|
946 | return av_shift (coro_ready [prio]); |
1008 | return av_shift (coro_ready [prio]); |
947 | } |
|
|
948 | |
1009 | |
949 | return 0; |
1010 | return 0; |
950 | } |
1011 | } |
951 | |
1012 | |
952 | static int |
1013 | static int |
953 | api_ready (SV *coro_sv) |
1014 | api_ready (SV *coro_sv) |
954 | { |
1015 | { |
|
|
1016 | dTHX; |
955 | struct coro *coro; |
1017 | struct coro *coro; |
956 | |
1018 | |
957 | if (SvROK (coro_sv)) |
1019 | if (SvROK (coro_sv)) |
958 | coro_sv = SvRV (coro_sv); |
1020 | coro_sv = SvRV (coro_sv); |
959 | |
1021 | |
… | |
… | |
963 | return 0; |
1025 | return 0; |
964 | |
1026 | |
965 | coro->flags |= CF_READY; |
1027 | coro->flags |= CF_READY; |
966 | |
1028 | |
967 | LOCK; |
1029 | LOCK; |
968 | coro_enq (SvREFCNT_inc (coro_sv)); |
1030 | coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); |
|
|
1031 | ++coro_nready; |
969 | UNLOCK; |
1032 | UNLOCK; |
970 | |
1033 | |
971 | return 1; |
1034 | return 1; |
972 | } |
1035 | } |
973 | |
1036 | |
974 | static int |
1037 | static int |
975 | api_is_ready (SV *coro_sv) |
1038 | api_is_ready (SV *coro_sv) |
976 | { |
1039 | { |
|
|
1040 | dTHX; |
977 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1041 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
978 | } |
1042 | } |
979 | |
1043 | |
980 | static void |
1044 | static void |
981 | prepare_schedule (struct transfer_args *ta) |
1045 | prepare_schedule (pTHX_ struct transfer_args *ta) |
982 | { |
1046 | { |
983 | SV *prev, *next; |
1047 | SV *prev_sv, *next_sv; |
984 | |
1048 | |
985 | for (;;) |
1049 | for (;;) |
986 | { |
1050 | { |
987 | LOCK; |
1051 | LOCK; |
988 | next = coro_deq (PRIO_MIN); |
1052 | next_sv = coro_deq (aTHX_ PRIO_MIN); |
|
|
1053 | |
|
|
1054 | /* nothing to schedule: call the idle handler */ |
|
|
1055 | if (!next_sv) |
|
|
1056 | { |
|
|
1057 | dSP; |
|
|
1058 | UNLOCK; |
|
|
1059 | |
|
|
1060 | ENTER; |
|
|
1061 | SAVETMPS; |
|
|
1062 | |
|
|
1063 | PUSHMARK (SP); |
|
|
1064 | PUTBACK; |
|
|
1065 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
|
|
1066 | |
|
|
1067 | FREETMPS; |
|
|
1068 | LEAVE; |
|
|
1069 | continue; |
|
|
1070 | } |
|
|
1071 | |
|
|
1072 | ta->next = SvSTATE (next_sv); |
|
|
1073 | |
|
|
1074 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1075 | if (ta->next->flags & CF_DESTROYED) |
|
|
1076 | { |
|
|
1077 | UNLOCK; |
|
|
1078 | SvREFCNT_dec (next_sv); |
|
|
1079 | /* coro_nready is already taken care of by destroy */ |
|
|
1080 | continue; |
|
|
1081 | } |
|
|
1082 | |
|
|
1083 | --coro_nready; |
989 | UNLOCK; |
1084 | UNLOCK; |
990 | |
|
|
991 | if (next) |
|
|
992 | break; |
1085 | break; |
993 | |
|
|
994 | { |
|
|
995 | dSP; |
|
|
996 | |
|
|
997 | ENTER; |
|
|
998 | SAVETMPS; |
|
|
999 | |
|
|
1000 | PUSHMARK (SP); |
|
|
1001 | PUTBACK; |
|
|
1002 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
|
|
1003 | |
|
|
1004 | FREETMPS; |
|
|
1005 | LEAVE; |
|
|
1006 | } |
1086 | } |
1007 | } |
|
|
1008 | |
|
|
1009 | prev = SvRV (coro_current); |
|
|
1010 | SvRV_set (coro_current, next); |
|
|
1011 | |
1087 | |
1012 | /* free this only after the transfer */ |
1088 | /* free this only after the transfer */ |
1013 | LOCK; |
1089 | prev_sv = SvRV (coro_current); |
1014 | free_coro_mortal (); |
1090 | SvRV_set (coro_current, next_sv); |
1015 | UNLOCK; |
|
|
1016 | coro_mortal = prev; |
|
|
1017 | |
|
|
1018 | assert (!SvROK(prev));//D |
|
|
1019 | assert (!SvROK(next));//D |
|
|
1020 | |
|
|
1021 | ta->prev = SvSTATE (prev); |
1091 | ta->prev = SvSTATE (prev_sv); |
1022 | ta->next = SvSTATE (next); |
|
|
1023 | |
1092 | |
1024 | assert (ta->next->flags & CF_READY); |
1093 | assert (ta->next->flags & CF_READY); |
1025 | ta->next->flags &= ~CF_READY; |
1094 | ta->next->flags &= ~CF_READY; |
1026 | } |
|
|
1027 | |
1095 | |
|
|
1096 | LOCK; |
|
|
1097 | free_coro_mortal (aTHX); |
|
|
1098 | coro_mortal = prev_sv; |
|
|
1099 | UNLOCK; |
|
|
1100 | } |
|
|
1101 | |
1028 | static void |
1102 | static void |
1029 | prepare_cede (struct transfer_args *ta) |
1103 | prepare_cede (pTHX_ struct transfer_args *ta) |
1030 | { |
1104 | { |
1031 | api_ready (coro_current); |
1105 | api_ready (coro_current); |
1032 | prepare_schedule (ta); |
1106 | prepare_schedule (aTHX_ ta); |
1033 | } |
1107 | } |
1034 | |
1108 | |
1035 | static int |
1109 | static int |
1036 | prepare_cede_notself (struct transfer_args *ta) |
1110 | prepare_cede_notself (pTHX_ struct transfer_args *ta) |
1037 | { |
1111 | { |
1038 | if (coro_nready) |
1112 | if (coro_nready) |
1039 | { |
1113 | { |
1040 | SV *prev = SvRV (coro_current); |
1114 | SV *prev = SvRV (coro_current); |
1041 | prepare_schedule (ta); |
1115 | prepare_schedule (aTHX_ ta); |
1042 | api_ready (prev); |
1116 | api_ready (prev); |
1043 | return 1; |
1117 | return 1; |
1044 | } |
1118 | } |
1045 | else |
1119 | else |
1046 | return 0; |
1120 | return 0; |
1047 | } |
1121 | } |
1048 | |
1122 | |
1049 | static void |
1123 | static void |
1050 | api_schedule (void) |
1124 | api_schedule (void) |
1051 | { |
1125 | { |
|
|
1126 | dTHX; |
1052 | struct transfer_args ta; |
1127 | struct transfer_args ta; |
1053 | |
1128 | |
1054 | prepare_schedule (&ta); |
1129 | prepare_schedule (aTHX_ &ta); |
1055 | TRANSFER (ta); |
1130 | TRANSFER (ta); |
1056 | } |
1131 | } |
1057 | |
1132 | |
1058 | static int |
1133 | static int |
1059 | api_cede (void) |
1134 | api_cede (void) |
1060 | { |
1135 | { |
|
|
1136 | dTHX; |
1061 | struct transfer_args ta; |
1137 | struct transfer_args ta; |
1062 | |
1138 | |
1063 | prepare_cede (&ta); |
1139 | prepare_cede (aTHX_ &ta); |
1064 | |
1140 | |
1065 | if (ta.prev != ta.next) |
1141 | if (ta.prev != ta.next) |
1066 | { |
1142 | { |
1067 | TRANSFER (ta); |
1143 | TRANSFER (ta); |
1068 | return 1; |
1144 | return 1; |
… | |
… | |
1072 | } |
1148 | } |
1073 | |
1149 | |
1074 | static int |
1150 | static int |
1075 | api_cede_notself (void) |
1151 | api_cede_notself (void) |
1076 | { |
1152 | { |
|
|
1153 | dTHX; |
1077 | struct transfer_args ta; |
1154 | struct transfer_args ta; |
1078 | |
1155 | |
1079 | if (prepare_cede_notself (&ta)) |
1156 | if (prepare_cede_notself (aTHX_ &ta)) |
1080 | { |
1157 | { |
1081 | TRANSFER (ta); |
1158 | TRANSFER (ta); |
1082 | return 1; |
1159 | return 1; |
1083 | } |
1160 | } |
1084 | else |
1161 | else |
… | |
… | |
1100 | |
1177 | |
1101 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); |
1178 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); |
1102 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); |
1179 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); |
1103 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV)); |
1180 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV)); |
1104 | newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV)); |
1181 | newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV)); |
|
|
1182 | newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH)); |
|
|
1183 | newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); |
1105 | newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); |
1184 | newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); |
1106 | |
1185 | |
1107 | main_mainstack = PL_mainstack; |
1186 | main_mainstack = PL_mainstack; |
|
|
1187 | main_top_env = PL_top_env; |
|
|
1188 | |
|
|
1189 | while (main_top_env->je_prev) |
|
|
1190 | main_top_env = main_top_env->je_prev; |
1108 | |
1191 | |
1109 | coroapi.ver = CORO_API_VERSION; |
1192 | coroapi.ver = CORO_API_VERSION; |
1110 | coroapi.transfer = api_transfer; |
1193 | coroapi.transfer = api_transfer; |
1111 | |
1194 | |
1112 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1195 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
… | |
… | |
1120 | HV *hv; |
1203 | HV *hv; |
1121 | int i; |
1204 | int i; |
1122 | |
1205 | |
1123 | Newz (0, coro, 1, struct coro); |
1206 | Newz (0, coro, 1, struct coro); |
1124 | coro->args = newAV (); |
1207 | coro->args = newAV (); |
1125 | coro->save = CORO_SAVE_ALL; |
1208 | coro->save = CORO_SAVE_DEF; |
1126 | coro->flags = CF_NEW; |
1209 | coro->flags = CF_NEW; |
1127 | |
1210 | |
1128 | hv = newHV (); |
1211 | hv = newHV (); |
1129 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1212 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1130 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1213 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
… | |
… | |
1137 | |
1220 | |
1138 | int |
1221 | int |
1139 | save (SV *coro, int new_save = -1) |
1222 | save (SV *coro, int new_save = -1) |
1140 | CODE: |
1223 | CODE: |
1141 | RETVAL = api_save (coro, new_save); |
1224 | RETVAL = api_save (coro, new_save); |
|
|
1225 | OUTPUT: |
|
|
1226 | RETVAL |
|
|
1227 | |
|
|
1228 | int |
|
|
1229 | save_also (SV *coro_sv, int save_also) |
|
|
1230 | CODE: |
|
|
1231 | { |
|
|
1232 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1233 | RETVAL = coro->save; |
|
|
1234 | coro->save |= save_also; |
|
|
1235 | } |
1142 | OUTPUT: |
1236 | OUTPUT: |
1143 | RETVAL |
1237 | RETVAL |
1144 | |
1238 | |
1145 | void |
1239 | void |
1146 | _set_stacklevel (...) |
1240 | _set_stacklevel (...) |
… | |
… | |
1162 | |
1256 | |
1163 | case 1: |
1257 | case 1: |
1164 | if (items != 2) |
1258 | if (items != 2) |
1165 | croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
1259 | croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
1166 | |
1260 | |
1167 | prepare_transfer (&ta, ST (0), ST (1)); |
1261 | prepare_transfer (aTHX_ &ta, ST (0), ST (1)); |
1168 | break; |
1262 | break; |
1169 | |
1263 | |
1170 | case 2: |
1264 | case 2: |
1171 | prepare_schedule (&ta); |
1265 | prepare_schedule (aTHX_ &ta); |
1172 | break; |
1266 | break; |
1173 | |
1267 | |
1174 | case 3: |
1268 | case 3: |
1175 | prepare_cede (&ta); |
1269 | prepare_cede (aTHX_ &ta); |
1176 | break; |
1270 | break; |
1177 | |
1271 | |
1178 | case 4: |
1272 | case 4: |
1179 | if (!prepare_cede_notself (&ta)) |
1273 | if (!prepare_cede_notself (aTHX_ &ta)) |
1180 | XSRETURN_EMPTY; |
1274 | XSRETURN_EMPTY; |
1181 | |
1275 | |
1182 | break; |
1276 | break; |
1183 | } |
1277 | } |
1184 | |
1278 | |
1185 | BARRIER; |
1279 | BARRIER; |
1186 | TRANSFER (ta); |
1280 | TRANSFER (ta); |
1187 | } |
|
|
1188 | |
1281 | |
1189 | void |
1282 | if (GIMME_V != G_VOID && ta.next != ta.prev) |
1190 | _clone_state_from (SV *dst, SV *src) |
1283 | XSRETURN_YES; |
|
|
1284 | } |
|
|
1285 | |
|
|
1286 | bool |
|
|
1287 | _destroy (SV *coro_sv) |
1191 | CODE: |
1288 | CODE: |
1192 | { |
1289 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
1193 | struct coro *coro_src = SvSTATE (src); |
1290 | OUTPUT: |
1194 | |
1291 | RETVAL |
1195 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
|
|
1196 | |
|
|
1197 | ++coro_src->refcnt; |
|
|
1198 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
|
|
1199 | } |
|
|
1200 | |
1292 | |
1201 | void |
1293 | void |
1202 | _exit (code) |
1294 | _exit (code) |
1203 | int code |
1295 | int code |
1204 | PROTOTYPE: $ |
1296 | PROTOTYPE: $ |
1205 | CODE: |
1297 | CODE: |
1206 | _exit (code); |
1298 | _exit (code); |
|
|
1299 | |
|
|
1300 | int |
|
|
1301 | cctx_stacksize (int new_stacksize = 0) |
|
|
1302 | CODE: |
|
|
1303 | RETVAL = coro_stacksize; |
|
|
1304 | if (new_stacksize) |
|
|
1305 | coro_stacksize = new_stacksize; |
|
|
1306 | OUTPUT: |
|
|
1307 | RETVAL |
1207 | |
1308 | |
1208 | int |
1309 | int |
1209 | cctx_count () |
1310 | cctx_count () |
1210 | CODE: |
1311 | CODE: |
1211 | RETVAL = cctx_count; |
1312 | RETVAL = cctx_count; |