… | |
… | |
7 | #include "patchlevel.h" |
7 | #include "patchlevel.h" |
8 | |
8 | |
9 | #if USE_VALGRIND |
9 | #if USE_VALGRIND |
10 | # include <valgrind/valgrind.h> |
10 | # include <valgrind/valgrind.h> |
11 | #endif |
11 | #endif |
|
|
12 | |
|
|
13 | /* the maximum number of idle cctx that will be pooled */ |
|
|
14 | #define MAX_IDLE_CCTX 8 |
12 | |
15 | |
13 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
16 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
14 | (PERL_REVISION > (a) \ |
17 | (PERL_REVISION > (a) \ |
15 | || (PERL_REVISION == (a) \ |
18 | || (PERL_REVISION == (a) \ |
16 | && (PERL_VERSION > (b) \ |
19 | && (PERL_VERSION > (b) \ |
… | |
… | |
35 | # ifndef IS_PADCONST |
38 | # ifndef IS_PADCONST |
36 | # define IS_PADCONST(v) 0 |
39 | # define IS_PADCONST(v) 0 |
37 | # endif |
40 | # endif |
38 | #endif |
41 | #endif |
39 | |
42 | |
|
|
43 | /* 5.8.7 */ |
|
|
44 | #ifndef SvRV_set |
|
|
45 | # define SvRV_set(s,v) SvRV(s) = (v) |
|
|
46 | #endif |
|
|
47 | |
40 | #include <stdio.h> |
48 | #include <stdio.h> |
41 | #include <errno.h> |
49 | #include <errno.h> |
|
|
50 | #include <assert.h> |
42 | |
51 | |
43 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
52 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
44 | # undef STACKGUARD |
53 | # undef STACKGUARD |
45 | #endif |
54 | #endif |
46 | |
55 | |
… | |
… | |
87 | |
96 | |
88 | #define NOINLINE attribute ((noinline)) |
97 | #define NOINLINE attribute ((noinline)) |
89 | |
98 | |
90 | #include "CoroAPI.h" |
99 | #include "CoroAPI.h" |
91 | |
100 | |
92 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
|
|
93 | |
|
|
94 | #ifdef USE_ITHREADS |
101 | #ifdef USE_ITHREADS |
95 | static perl_mutex coro_mutex; |
102 | static perl_mutex coro_mutex; |
96 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
103 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
97 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
104 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
98 | #else |
105 | #else |
99 | # define LOCK (void)0 |
106 | # define LOCK (void)0 |
100 | # define UNLOCK (void)0 |
107 | # define UNLOCK (void)0 |
101 | #endif |
108 | #endif |
102 | |
109 | |
|
|
110 | struct io_state |
|
|
111 | { |
|
|
112 | int errorno; |
|
|
113 | I32 laststype; |
|
|
114 | int laststatval; |
|
|
115 | Stat_t statcache; |
|
|
116 | }; |
|
|
117 | |
103 | static struct CoroAPI coroapi; |
118 | static struct CoroAPI coroapi; |
104 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
119 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
105 | static HV *coro_state_stash, *coro_stash; |
120 | static HV *coro_state_stash, *coro_stash; |
106 | static SV *coro_mortal; /* will be freed after next transfer */ |
121 | static SV *coro_mortal; /* will be freed after next transfer */ |
107 | |
122 | |
|
|
123 | static struct coro_cctx *cctx_first; |
|
|
124 | static int cctx_count, cctx_idle; |
|
|
125 | |
108 | /* this is a structure representing a c-level coroutine */ |
126 | /* this is a structure representing a c-level coroutine */ |
109 | typedef struct coro_cctx { |
127 | typedef struct coro_cctx { |
110 | struct coro_cctx *next; |
128 | struct coro_cctx *next; |
111 | |
129 | |
112 | /* the stack */ |
130 | /* the stack */ |
… | |
… | |
116 | /* cpu state */ |
134 | /* cpu state */ |
117 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
135 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
118 | JMPENV *top_env; |
136 | JMPENV *top_env; |
119 | coro_context cctx; |
137 | coro_context cctx; |
120 | |
138 | |
|
|
139 | int inuse; |
|
|
140 | |
121 | #if USE_VALGRIND |
141 | #if USE_VALGRIND |
122 | int valgrind_id; |
142 | int valgrind_id; |
123 | #endif |
143 | #endif |
124 | } coro_cctx; |
144 | } coro_cctx; |
|
|
145 | |
|
|
146 | enum { |
|
|
147 | CF_RUNNING = 0x0001, /* coroutine is running */ |
|
|
148 | CF_READY = 0x0002, /* coroutine is ready */ |
|
|
149 | CF_NEW = 0x0004, /* ahs never been switched to */ |
|
|
150 | }; |
125 | |
151 | |
126 | /* this is a structure representing a perl-level coroutine */ |
152 | /* this is a structure representing a perl-level coroutine */ |
127 | struct coro { |
153 | struct coro { |
128 | /* the c coroutine allocated to this perl coroutine, if any */ |
154 | /* the c coroutine allocated to this perl coroutine, if any */ |
129 | coro_cctx *cctx; |
155 | coro_cctx *cctx; |
130 | |
156 | |
131 | /* data associated with this coroutine (initial args) */ |
157 | /* data associated with this coroutine (initial args) */ |
132 | AV *args; |
158 | AV *args; |
133 | int refcnt; |
159 | int refcnt; |
|
|
160 | int save; /* CORO_SAVE flags */ |
|
|
161 | int flags; /* CF_ flags */ |
134 | |
162 | |
135 | /* optionally saved, might be zero */ |
163 | /* optionally saved, might be zero */ |
136 | AV *defav; |
164 | AV *defav; /* @_ */ |
137 | SV *defsv; |
165 | SV *defsv; /* $_ */ |
138 | SV *errsv; |
166 | SV *errsv; /* $@ */ |
|
|
167 | SV *irssv; /* $/ */ |
|
|
168 | SV *irssv_sv; /* real $/ cache */ |
139 | |
169 | |
140 | /* saved global state not related to stacks */ |
170 | #define VAR(name,type) type name; |
141 | U8 dowarn; |
171 | # include "state.h" |
142 | I32 in_eval; |
172 | #undef VAR |
143 | |
|
|
144 | /* the stacks and related info (callchain etc..) */ |
|
|
145 | PERL_SI *curstackinfo; |
|
|
146 | AV *curstack; |
|
|
147 | AV *mainstack; |
|
|
148 | SV **stack_sp; |
|
|
149 | OP *op; |
|
|
150 | SV **curpad; |
|
|
151 | AV *comppad; |
|
|
152 | CV *compcv; |
|
|
153 | SV **stack_base; |
|
|
154 | SV **stack_max; |
|
|
155 | SV **tmps_stack; |
|
|
156 | I32 tmps_floor; |
|
|
157 | I32 tmps_ix; |
|
|
158 | I32 tmps_max; |
|
|
159 | I32 *markstack; |
|
|
160 | I32 *markstack_ptr; |
|
|
161 | I32 *markstack_max; |
|
|
162 | I32 *scopestack; |
|
|
163 | I32 scopestack_ix; |
|
|
164 | I32 scopestack_max; |
|
|
165 | ANY *savestack; |
|
|
166 | I32 savestack_ix; |
|
|
167 | I32 savestack_max; |
|
|
168 | OP **retstack; |
|
|
169 | I32 retstack_ix; |
|
|
170 | I32 retstack_max; |
|
|
171 | PMOP *curpm; |
|
|
172 | COP *curcop; |
|
|
173 | |
173 | |
174 | /* coro process data */ |
174 | /* coro process data */ |
175 | int prio; |
175 | int prio; |
176 | }; |
176 | }; |
177 | |
177 | |
… | |
… | |
241 | |
241 | |
242 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
242 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
243 | |
243 | |
244 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
244 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
245 | |
245 | |
|
|
246 | #define CORO_MAGIC(cv) \ |
|
|
247 | SvMAGIC (cv) \ |
|
|
248 | ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
|
|
249 | ? SvMAGIC (cv) \ |
|
|
250 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
|
|
251 | : 0 |
|
|
252 | |
246 | /* the next two functions merely cache the padlists */ |
253 | /* the next two functions merely cache the padlists */ |
247 | static void |
254 | static void |
248 | get_padlist (CV *cv) |
255 | get_padlist (CV *cv) |
249 | { |
256 | { |
250 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
257 | MAGIC *mg = CORO_MAGIC (cv); |
|
|
258 | AV *av; |
251 | |
259 | |
252 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
260 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
253 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
261 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
254 | else |
262 | else |
255 | { |
263 | { |
256 | #if 0 |
264 | #if 0 |
257 | /* this is probably cleaner, but also slower? */ |
265 | /* this is probably cleaner, but also slower? */ |
258 | CV *cp = Perl_cv_clone (cv); |
266 | CV *cp = Perl_cv_clone (cv); |
… | |
… | |
266 | } |
274 | } |
267 | |
275 | |
268 | static void |
276 | static void |
269 | put_padlist (CV *cv) |
277 | put_padlist (CV *cv) |
270 | { |
278 | { |
271 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
279 | MAGIC *mg = CORO_MAGIC (cv); |
|
|
280 | AV *av; |
272 | |
281 | |
273 | if (!mg) |
282 | if (!mg) |
274 | { |
283 | { |
275 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
284 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
276 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
285 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
277 | mg->mg_virtual = &vtbl_coro; |
286 | mg->mg_virtual = &vtbl_coro; |
278 | mg->mg_obj = (SV *)newAV (); |
287 | mg->mg_obj = (SV *)newAV (); |
279 | } |
288 | } |
280 | |
289 | |
281 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
290 | av = (AV *)mg->mg_obj; |
|
|
291 | |
|
|
292 | if (AvFILLp (av) >= AvMAX (av)) |
|
|
293 | av_extend (av, AvMAX (av) + 1); |
|
|
294 | |
|
|
295 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
282 | } |
296 | } |
283 | |
297 | |
284 | #define SB do { |
298 | #define SB do { |
285 | #define SE } while (0) |
299 | #define SE } while (0) |
286 | |
300 | |
287 | #define LOAD(state) load_state((state)); |
|
|
288 | #define SAVE(state,flags) save_state((state),(flags)); |
|
|
289 | |
|
|
290 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
301 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
291 | |
302 | |
292 | static void |
303 | static void |
293 | load_state(Coro__State c) |
304 | load_perl (Coro__State c) |
294 | { |
305 | { |
295 | PL_dowarn = c->dowarn; |
306 | #define VAR(name,type) PL_ ## name = c->name; |
296 | PL_in_eval = c->in_eval; |
307 | # include "state.h" |
297 | |
308 | #undef VAR |
298 | PL_curstackinfo = c->curstackinfo; |
|
|
299 | PL_curstack = c->curstack; |
|
|
300 | PL_mainstack = c->mainstack; |
|
|
301 | PL_stack_sp = c->stack_sp; |
|
|
302 | PL_op = c->op; |
|
|
303 | PL_curpad = c->curpad; |
|
|
304 | PL_comppad = c->comppad; |
|
|
305 | PL_compcv = c->compcv; |
|
|
306 | PL_stack_base = c->stack_base; |
|
|
307 | PL_stack_max = c->stack_max; |
|
|
308 | PL_tmps_stack = c->tmps_stack; |
|
|
309 | PL_tmps_floor = c->tmps_floor; |
|
|
310 | PL_tmps_ix = c->tmps_ix; |
|
|
311 | PL_tmps_max = c->tmps_max; |
|
|
312 | PL_markstack = c->markstack; |
|
|
313 | PL_markstack_ptr = c->markstack_ptr; |
|
|
314 | PL_markstack_max = c->markstack_max; |
|
|
315 | PL_scopestack = c->scopestack; |
|
|
316 | PL_scopestack_ix = c->scopestack_ix; |
|
|
317 | PL_scopestack_max = c->scopestack_max; |
|
|
318 | PL_savestack = c->savestack; |
|
|
319 | PL_savestack_ix = c->savestack_ix; |
|
|
320 | PL_savestack_max = c->savestack_max; |
|
|
321 | #if !PERL_VERSION_ATLEAST (5,9,0) |
|
|
322 | PL_retstack = c->retstack; |
|
|
323 | PL_retstack_ix = c->retstack_ix; |
|
|
324 | PL_retstack_max = c->retstack_max; |
|
|
325 | #endif |
|
|
326 | PL_curpm = c->curpm; |
|
|
327 | PL_curcop = c->curcop; |
|
|
328 | |
309 | |
329 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
310 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
330 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
311 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
331 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
312 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
|
|
313 | if (c->irssv) |
|
|
314 | { |
|
|
315 | if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv)) |
|
|
316 | SvREFCNT_dec (c->irssv); |
|
|
317 | else |
|
|
318 | { |
|
|
319 | REPLACE_SV (PL_rs, c->irssv); |
|
|
320 | if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0); |
|
|
321 | sv_setsv (c->irssv_sv, PL_rs); |
|
|
322 | } |
|
|
323 | } |
332 | |
324 | |
333 | { |
325 | { |
334 | dSP; |
326 | dSP; |
335 | CV *cv; |
327 | CV *cv; |
336 | |
328 | |
337 | /* now do the ugly restore mess */ |
329 | /* now do the ugly restore mess */ |
338 | while ((cv = (CV *)POPs)) |
330 | while ((cv = (CV *)POPs)) |
339 | { |
331 | { |
340 | AV *padlist = (AV *)POPs; |
|
|
341 | |
|
|
342 | if (padlist) |
|
|
343 | { |
|
|
344 | put_padlist (cv); /* mark this padlist as available */ |
332 | put_padlist (cv); /* mark this padlist as available */ |
345 | CvPADLIST(cv) = padlist; |
333 | CvDEPTH (cv) = PTR2IV (POPs); |
346 | } |
334 | CvPADLIST (cv) = (AV *)POPs; |
347 | |
|
|
348 | ++CvDEPTH(cv); |
|
|
349 | } |
335 | } |
350 | |
336 | |
351 | PUTBACK; |
337 | PUTBACK; |
352 | } |
338 | } |
353 | } |
339 | } |
354 | |
340 | |
355 | static void |
341 | static void |
356 | save_state(Coro__State c, int flags) |
342 | save_perl (Coro__State c) |
357 | { |
343 | { |
358 | { |
344 | { |
359 | dSP; |
345 | dSP; |
360 | I32 cxix = cxstack_ix; |
346 | I32 cxix = cxstack_ix; |
361 | PERL_CONTEXT *ccstk = cxstack; |
347 | PERL_CONTEXT *ccstk = cxstack; |
… | |
… | |
364 | /* |
350 | /* |
365 | * the worst thing you can imagine happens first - we have to save |
351 | * the worst thing you can imagine happens first - we have to save |
366 | * (and reinitialize) all cv's in the whole callchain :( |
352 | * (and reinitialize) all cv's in the whole callchain :( |
367 | */ |
353 | */ |
368 | |
354 | |
|
|
355 | EXTEND (SP, 3 + 1); |
369 | PUSHs (Nullsv); |
356 | PUSHs (Nullsv); |
370 | /* this loop was inspired by pp_caller */ |
357 | /* this loop was inspired by pp_caller */ |
371 | for (;;) |
358 | for (;;) |
372 | { |
359 | { |
373 | while (cxix >= 0) |
360 | while (cxix >= 0) |
374 | { |
361 | { |
375 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
362 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
376 | |
363 | |
377 | if (CxTYPE(cx) == CXt_SUB) |
364 | if (CxTYPE (cx) == CXt_SUB) |
378 | { |
365 | { |
379 | CV *cv = cx->blk_sub.cv; |
366 | CV *cv = cx->blk_sub.cv; |
|
|
367 | |
380 | if (CvDEPTH(cv)) |
368 | if (CvDEPTH (cv)) |
381 | { |
369 | { |
382 | EXTEND (SP, CvDEPTH(cv)*2); |
370 | EXTEND (SP, 3); |
383 | |
|
|
384 | while (--CvDEPTH(cv)) |
|
|
385 | { |
|
|
386 | /* this tells the restore code to increment CvDEPTH */ |
|
|
387 | PUSHs (Nullsv); |
|
|
388 | PUSHs ((SV *)cv); |
|
|
389 | } |
|
|
390 | |
|
|
391 | PUSHs ((SV *)CvPADLIST(cv)); |
371 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
372 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
392 | PUSHs ((SV *)cv); |
373 | PUSHs ((SV *)cv); |
393 | |
374 | |
|
|
375 | CvDEPTH (cv) = 0; |
394 | get_padlist (cv); |
376 | get_padlist (cv); |
395 | } |
377 | } |
396 | } |
378 | } |
397 | #ifdef CXt_FORMAT |
|
|
398 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
|
399 | { |
|
|
400 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
401 | /* my bold guess is as a simple, plain sub... */ |
|
|
402 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
403 | } |
|
|
404 | #endif |
|
|
405 | } |
379 | } |
406 | |
380 | |
407 | if (top_si->si_type == PERLSI_MAIN) |
381 | if (top_si->si_type == PERLSI_MAIN) |
408 | break; |
382 | break; |
409 | |
383 | |
… | |
… | |
413 | } |
387 | } |
414 | |
388 | |
415 | PUTBACK; |
389 | PUTBACK; |
416 | } |
390 | } |
417 | |
391 | |
418 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
392 | c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
419 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
393 | c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
420 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
394 | c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
|
|
395 | c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; |
421 | |
396 | |
422 | c->dowarn = PL_dowarn; |
397 | #define VAR(name,type)c->name = PL_ ## name; |
423 | c->in_eval = PL_in_eval; |
398 | # include "state.h" |
424 | |
399 | #undef VAR |
425 | c->curstackinfo = PL_curstackinfo; |
|
|
426 | c->curstack = PL_curstack; |
|
|
427 | c->mainstack = PL_mainstack; |
|
|
428 | c->stack_sp = PL_stack_sp; |
|
|
429 | c->op = PL_op; |
|
|
430 | c->curpad = PL_curpad; |
|
|
431 | c->comppad = PL_comppad; |
|
|
432 | c->compcv = PL_compcv; |
|
|
433 | c->stack_base = PL_stack_base; |
|
|
434 | c->stack_max = PL_stack_max; |
|
|
435 | c->tmps_stack = PL_tmps_stack; |
|
|
436 | c->tmps_floor = PL_tmps_floor; |
|
|
437 | c->tmps_ix = PL_tmps_ix; |
|
|
438 | c->tmps_max = PL_tmps_max; |
|
|
439 | c->markstack = PL_markstack; |
|
|
440 | c->markstack_ptr = PL_markstack_ptr; |
|
|
441 | c->markstack_max = PL_markstack_max; |
|
|
442 | c->scopestack = PL_scopestack; |
|
|
443 | c->scopestack_ix = PL_scopestack_ix; |
|
|
444 | c->scopestack_max = PL_scopestack_max; |
|
|
445 | c->savestack = PL_savestack; |
|
|
446 | c->savestack_ix = PL_savestack_ix; |
|
|
447 | c->savestack_max = PL_savestack_max; |
|
|
448 | #if !PERL_VERSION_ATLEAST (5,9,0) |
|
|
449 | c->retstack = PL_retstack; |
|
|
450 | c->retstack_ix = PL_retstack_ix; |
|
|
451 | c->retstack_max = PL_retstack_max; |
|
|
452 | #endif |
|
|
453 | c->curpm = PL_curpm; |
|
|
454 | c->curcop = PL_curcop; |
|
|
455 | } |
400 | } |
456 | |
401 | |
457 | /* |
402 | /* |
458 | * allocate various perl stacks. This is an exact copy |
403 | * allocate various perl stacks. This is an exact copy |
459 | * of perl.c:init_stacks, except that it uses less memory |
404 | * of perl.c:init_stacks, except that it uses less memory |
460 | * on the (sometimes correct) assumption that coroutines do |
405 | * on the (sometimes correct) assumption that coroutines do |
461 | * not usually need a lot of stackspace. |
406 | * not usually need a lot of stackspace. |
462 | */ |
407 | */ |
|
|
408 | #if USE_PERL_INIT_STACKS |
|
|
409 | # define coro_init_stacks init_stacks |
|
|
410 | #else |
|
|
411 | |
463 | static void |
412 | static void |
464 | coro_init_stacks () |
413 | coro_init_stacks () |
465 | { |
414 | { |
466 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
415 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
467 | PL_curstackinfo->si_type = PERLSI_MAIN; |
416 | PL_curstackinfo->si_type = PERLSI_MAIN; |
468 | PL_curstack = PL_curstackinfo->si_stack; |
417 | PL_curstack = PL_curstackinfo->si_stack; |
469 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
418 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
470 | |
419 | |
471 | PL_stack_base = AvARRAY(PL_curstack); |
420 | PL_stack_base = AvARRAY(PL_curstack); |
472 | PL_stack_sp = PL_stack_base; |
421 | PL_stack_sp = PL_stack_base; |
473 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
422 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
474 | |
423 | |
475 | New(50,PL_tmps_stack,96,SV*); |
424 | New(50,PL_tmps_stack,128,SV*); |
476 | PL_tmps_floor = -1; |
425 | PL_tmps_floor = -1; |
477 | PL_tmps_ix = -1; |
426 | PL_tmps_ix = -1; |
478 | PL_tmps_max = 96; |
427 | PL_tmps_max = 128; |
479 | |
428 | |
480 | New(54,PL_markstack,16,I32); |
429 | New(54,PL_markstack,32,I32); |
481 | PL_markstack_ptr = PL_markstack; |
430 | PL_markstack_ptr = PL_markstack; |
482 | PL_markstack_max = PL_markstack + 16; |
431 | PL_markstack_max = PL_markstack + 32; |
483 | |
432 | |
484 | #ifdef SET_MARK_OFFSET |
433 | #ifdef SET_MARK_OFFSET |
485 | SET_MARK_OFFSET; |
434 | SET_MARK_OFFSET; |
486 | #endif |
435 | #endif |
487 | |
436 | |
488 | New(54,PL_scopestack,16,I32); |
437 | New(54,PL_scopestack,32,I32); |
489 | PL_scopestack_ix = 0; |
438 | PL_scopestack_ix = 0; |
490 | PL_scopestack_max = 16; |
439 | PL_scopestack_max = 32; |
491 | |
440 | |
492 | New(54,PL_savestack,96,ANY); |
441 | New(54,PL_savestack,64,ANY); |
493 | PL_savestack_ix = 0; |
442 | PL_savestack_ix = 0; |
494 | PL_savestack_max = 96; |
443 | PL_savestack_max = 64; |
495 | |
444 | |
496 | #if !PERL_VERSION_ATLEAST (5,9,0) |
445 | #if !PERL_VERSION_ATLEAST (5,9,0) |
497 | New(54,PL_retstack,8,OP*); |
446 | New(54,PL_retstack,16,OP*); |
498 | PL_retstack_ix = 0; |
447 | PL_retstack_ix = 0; |
499 | PL_retstack_max = 8; |
448 | PL_retstack_max = 16; |
500 | #endif |
449 | #endif |
501 | } |
450 | } |
502 | |
451 | |
503 | /* |
452 | /* |
504 | * destroy the stacks, the callchain etc... |
453 | * destroy the stacks, the callchain etc... |
… | |
… | |
506 | static void |
455 | static void |
507 | coro_destroy_stacks () |
456 | coro_destroy_stacks () |
508 | { |
457 | { |
509 | if (!IN_DESTRUCT) |
458 | if (!IN_DESTRUCT) |
510 | { |
459 | { |
511 | /* is this ugly, I ask? */ |
460 | /* restore all saved variables and stuff */ |
512 | LEAVE_SCOPE (0); |
461 | LEAVE_SCOPE (0); |
|
|
462 | assert (PL_tmps_floor == -1); |
513 | |
463 | |
514 | /* sure it is, but more important: is it correct?? :/ */ |
464 | /* free all temporaries */ |
515 | FREETMPS; |
465 | FREETMPS; |
|
|
466 | assert (PL_tmps_ix == -1); |
516 | |
467 | |
517 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
468 | POPSTACK_TO (PL_mainstack); |
518 | } |
469 | } |
519 | |
470 | |
520 | while (PL_curstackinfo->si_next) |
471 | while (PL_curstackinfo->si_next) |
521 | PL_curstackinfo = PL_curstackinfo->si_next; |
472 | PL_curstackinfo = PL_curstackinfo->si_next; |
522 | |
473 | |
523 | while (PL_curstackinfo) |
474 | while (PL_curstackinfo) |
524 | { |
475 | { |
525 | PERL_SI *p = PL_curstackinfo->si_prev; |
476 | PERL_SI *p = PL_curstackinfo->si_prev; |
526 | |
477 | |
527 | { /*D*//*remove*/ |
|
|
528 | dSP; |
|
|
529 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
530 | PUTBACK; /* possibly superfluous */ |
|
|
531 | } |
|
|
532 | |
|
|
533 | if (!IN_DESTRUCT) |
478 | if (!IN_DESTRUCT) |
534 | { |
|
|
535 | dounwind (-1);/*D*//*remove*/ |
|
|
536 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
479 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
537 | } |
|
|
538 | |
480 | |
539 | Safefree (PL_curstackinfo->si_cxstack); |
481 | Safefree (PL_curstackinfo->si_cxstack); |
540 | Safefree (PL_curstackinfo); |
482 | Safefree (PL_curstackinfo); |
541 | PL_curstackinfo = p; |
483 | PL_curstackinfo = p; |
542 | } |
484 | } |
… | |
… | |
547 | Safefree (PL_savestack); |
489 | Safefree (PL_savestack); |
548 | #if !PERL_VERSION_ATLEAST (5,9,0) |
490 | #if !PERL_VERSION_ATLEAST (5,9,0) |
549 | Safefree (PL_retstack); |
491 | Safefree (PL_retstack); |
550 | #endif |
492 | #endif |
551 | } |
493 | } |
|
|
494 | #endif |
552 | |
495 | |
553 | static void |
496 | static void |
554 | setup_coro (struct coro *coro) |
497 | setup_coro (struct coro *coro) |
555 | { |
498 | { |
556 | /* |
499 | /* |
557 | * emulate part of the perl startup here. |
500 | * emulate part of the perl startup here. |
558 | */ |
501 | */ |
559 | |
502 | |
560 | coro_init_stacks (); |
503 | coro_init_stacks (); |
561 | |
504 | |
562 | PL_curcop = 0; |
505 | PL_curcop = &PL_compiling; |
563 | PL_in_eval = 0; |
506 | PL_in_eval = EVAL_NULL; |
564 | PL_curpm = 0; |
507 | PL_curpm = 0; |
|
|
508 | PL_localizing = 0; |
|
|
509 | PL_dirty = 0; |
|
|
510 | PL_restartop = 0; |
565 | |
511 | |
566 | { |
512 | { |
567 | dSP; |
513 | dSP; |
568 | LOGOP myop; |
514 | LOGOP myop; |
569 | |
515 | |
570 | /* I have no idea why this is needed, but it is */ |
|
|
571 | PUSHMARK (SP); |
|
|
572 | |
|
|
573 | SvREFCNT_dec (GvAV (PL_defgv)); |
516 | SvREFCNT_dec (GvAV (PL_defgv)); |
574 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
517 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
575 | |
518 | |
576 | Zero (&myop, 1, LOGOP); |
519 | Zero (&myop, 1, LOGOP); |
577 | myop.op_next = Nullop; |
520 | myop.op_next = Nullop; |
578 | myop.op_flags = OPf_WANT_VOID; |
521 | myop.op_flags = OPf_WANT_VOID; |
579 | |
522 | |
|
|
523 | PUSHMARK (SP); |
|
|
524 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
|
|
525 | PUTBACK; |
580 | PL_op = (OP *)&myop; |
526 | PL_op = (OP *)&myop; |
581 | |
|
|
582 | PUSHMARK (SP); |
|
|
583 | XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE)); |
|
|
584 | PUTBACK; |
|
|
585 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
527 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
586 | SPAGAIN; |
528 | SPAGAIN; |
587 | |
|
|
588 | ENTER; /* necessary e.g. for dounwind */ |
|
|
589 | } |
529 | } |
|
|
530 | |
|
|
531 | ENTER; /* necessary e.g. for dounwind */ |
590 | } |
532 | } |
591 | |
533 | |
592 | static void |
534 | static void |
593 | free_coro_mortal () |
535 | free_coro_mortal () |
594 | { |
536 | { |
… | |
… | |
597 | SvREFCNT_dec (coro_mortal); |
539 | SvREFCNT_dec (coro_mortal); |
598 | coro_mortal = 0; |
540 | coro_mortal = 0; |
599 | } |
541 | } |
600 | } |
542 | } |
601 | |
543 | |
|
|
544 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
602 | static void NOINLINE |
545 | static void NOINLINE |
603 | prepare_cctx (coro_cctx *cctx) |
546 | prepare_cctx (coro_cctx *cctx) |
604 | { |
547 | { |
605 | dSP; |
548 | dSP; |
606 | LOGOP myop; |
549 | LOGOP myop; |
607 | |
550 | |
608 | Zero (&myop, 1, LOGOP); |
551 | Zero (&myop, 1, LOGOP); |
609 | myop.op_next = PL_op; |
552 | myop.op_next = PL_op; |
610 | myop.op_flags = OPf_WANT_VOID; |
553 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
611 | |
|
|
612 | sv_setiv (get_sv ("Coro::State::cctx", FALSE), PTR2IV (cctx)); |
|
|
613 | |
554 | |
614 | PUSHMARK (SP); |
555 | PUSHMARK (SP); |
|
|
556 | EXTEND (SP, 2); |
|
|
557 | PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
615 | XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE)); |
558 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
616 | PUTBACK; |
559 | PUTBACK; |
|
|
560 | PL_op = (OP *)&myop; |
617 | PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); |
561 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
618 | SPAGAIN; |
562 | SPAGAIN; |
619 | } |
563 | } |
620 | |
564 | |
621 | static void |
565 | static void |
622 | coro_run (void *arg) |
566 | coro_run (void *arg) |
623 | { |
567 | { |
624 | /* coro_run is the alternative epilogue of transfer() */ |
568 | /* coro_run is the alternative tail of transfer(), so unlock here. */ |
625 | UNLOCK; |
569 | UNLOCK; |
626 | |
570 | |
627 | /* |
571 | /* |
628 | * this is a _very_ stripped down perl interpreter ;) |
572 | * this is a _very_ stripped down perl interpreter ;) |
629 | */ |
573 | */ |
630 | PL_top_env = &PL_start_env; |
574 | PL_top_env = &PL_start_env; |
|
|
575 | |
631 | /* inject call to cctx_init */ |
576 | /* inject call to cctx_init */ |
632 | prepare_cctx ((coro_cctx *)arg); |
577 | prepare_cctx ((coro_cctx *)arg); |
633 | |
578 | |
634 | /* somebody will hit me for both perl_run and PL_restartop */ |
579 | /* somebody will hit me for both perl_run and PL_restartop */ |
|
|
580 | PL_restartop = PL_op; |
635 | perl_run (PL_curinterp); |
581 | perl_run (PL_curinterp); |
636 | |
582 | |
637 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
583 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
638 | abort (); |
584 | abort (); |
639 | } |
585 | } |
… | |
… | |
641 | static coro_cctx * |
587 | static coro_cctx * |
642 | cctx_new () |
588 | cctx_new () |
643 | { |
589 | { |
644 | coro_cctx *cctx; |
590 | coro_cctx *cctx; |
645 | |
591 | |
|
|
592 | ++cctx_count; |
|
|
593 | |
646 | New (0, cctx, 1, coro_cctx); |
594 | Newz (0, cctx, 1, coro_cctx); |
647 | |
595 | |
648 | #if HAVE_MMAP |
596 | #if HAVE_MMAP |
649 | |
597 | |
650 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
598 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
651 | /* mmap suppsedly does allocate-on-write for us */ |
599 | /* mmap supposedly does allocate-on-write for us */ |
652 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
600 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
653 | |
601 | |
654 | if (cctx->sptr == (void *)-1) |
602 | if (cctx->sptr == (void *)-1) |
655 | { |
603 | { |
656 | perror ("FATAL: unable to mmap stack for coroutine"); |
604 | perror ("FATAL: unable to mmap stack for coroutine"); |
… | |
… | |
685 | |
633 | |
686 | return cctx; |
634 | return cctx; |
687 | } |
635 | } |
688 | |
636 | |
689 | static void |
637 | static void |
690 | cctx_free (coro_cctx *cctx) |
638 | cctx_destroy (coro_cctx *cctx) |
691 | { |
639 | { |
692 | if (!cctx) |
640 | if (!cctx) |
693 | return; |
641 | return; |
|
|
642 | |
|
|
643 | --cctx_count; |
694 | |
644 | |
695 | #if USE_VALGRIND |
645 | #if USE_VALGRIND |
696 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
646 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
697 | #endif |
647 | #endif |
698 | |
648 | |
… | |
… | |
703 | #endif |
653 | #endif |
704 | |
654 | |
705 | Safefree (cctx); |
655 | Safefree (cctx); |
706 | } |
656 | } |
707 | |
657 | |
708 | static coro_cctx *cctx_first; |
|
|
709 | static int cctx_count, cctx_idle; |
|
|
710 | |
|
|
711 | static coro_cctx * |
658 | static coro_cctx * |
712 | cctx_get () |
659 | cctx_get () |
713 | { |
660 | { |
714 | coro_cctx *cctx; |
661 | coro_cctx *cctx; |
715 | |
662 | |
716 | if (cctx_first) |
663 | if (cctx_first) |
717 | { |
664 | { |
718 | --cctx_idle; |
|
|
719 | cctx = cctx_first; |
665 | cctx = cctx_first; |
720 | cctx_first = cctx->next; |
666 | cctx_first = cctx->next; |
|
|
667 | --cctx_idle; |
721 | } |
668 | } |
722 | else |
669 | else |
723 | { |
670 | { |
724 | ++cctx_count; |
|
|
725 | cctx = cctx_new (); |
671 | cctx = cctx_new (); |
726 | PL_op = PL_op->op_next; |
672 | PL_op = PL_op->op_next; |
727 | } |
673 | } |
728 | |
674 | |
729 | return cctx; |
675 | return cctx; |
730 | } |
676 | } |
731 | |
677 | |
732 | static void |
678 | static void |
733 | cctx_put (coro_cctx *cctx) |
679 | cctx_put (coro_cctx *cctx) |
734 | { |
680 | { |
|
|
681 | /* free another cctx if overlimit */ |
|
|
682 | if (cctx_idle >= MAX_IDLE_CCTX) |
|
|
683 | { |
|
|
684 | coro_cctx *first = cctx_first; |
|
|
685 | cctx_first = first->next; |
|
|
686 | --cctx_idle; |
|
|
687 | |
|
|
688 | assert (!first->inuse); |
|
|
689 | cctx_destroy (first); |
|
|
690 | } |
|
|
691 | |
735 | ++cctx_idle; |
692 | ++cctx_idle; |
736 | cctx->next = cctx_first; |
693 | cctx->next = cctx_first; |
737 | cctx_first = cctx; |
694 | cctx_first = cctx; |
738 | } |
695 | } |
739 | |
696 | |
740 | /* never call directly, always through the coro_state_transfer global variable */ |
697 | /* never call directly, always through the coro_state_transfer global variable */ |
741 | static void NOINLINE |
698 | static void NOINLINE |
742 | transfer (struct coro *prev, struct coro *next, int flags) |
699 | transfer (struct coro *prev, struct coro *next) |
743 | { |
700 | { |
744 | dSTACKLEVEL; |
701 | dSTACKLEVEL; |
745 | |
702 | |
746 | /* sometimes transfer is only called to set idle_sp */ |
703 | /* sometimes transfer is only called to set idle_sp */ |
747 | if (flags == TRANSFER_SET_STACKLEVEL) |
704 | if (!next) |
|
|
705 | { |
748 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
706 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
707 | assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */ |
|
|
708 | } |
749 | else if (prev != next) |
709 | else if (prev != next) |
750 | { |
710 | { |
751 | coro_cctx *prev__cctx; |
711 | coro_cctx *prev__cctx; |
752 | |
712 | |
|
|
713 | if (prev->flags & CF_NEW) |
|
|
714 | { |
|
|
715 | /* create a new empty context */ |
|
|
716 | Newz (0, prev->cctx, 1, coro_cctx); |
|
|
717 | prev->cctx->inuse = 1; |
|
|
718 | prev->flags &= ~CF_NEW; |
|
|
719 | prev->flags |= CF_RUNNING; |
|
|
720 | } |
|
|
721 | |
|
|
722 | /*TODO: must not croak here */ |
|
|
723 | if (!prev->flags & CF_RUNNING) |
|
|
724 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
|
|
725 | |
|
|
726 | if (next->flags & CF_RUNNING) |
|
|
727 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
|
|
728 | |
|
|
729 | prev->flags &= ~CF_RUNNING; |
|
|
730 | next->flags |= CF_RUNNING; |
|
|
731 | |
753 | LOCK; |
732 | LOCK; |
754 | |
733 | |
755 | if (next->mainstack) |
734 | if (next->flags & CF_NEW) |
756 | { |
735 | { |
757 | /* coroutine already started */ |
736 | /* need to start coroutine */ |
758 | SAVE (prev, flags); |
737 | next->flags &= ~CF_NEW; |
759 | LOAD (next); |
738 | /* first get rid of the old state */ |
|
|
739 | save_perl (prev); |
|
|
740 | /* setup coroutine call */ |
|
|
741 | setup_coro (next); |
|
|
742 | /* need a new stack */ |
|
|
743 | assert (!next->cctx); |
760 | } |
744 | } |
761 | else |
745 | else |
762 | { |
746 | { |
763 | /* need to start coroutine */ |
747 | /* coroutine already started */ |
764 | /* first get rid of the old state */ |
748 | save_perl (prev); |
765 | SAVE (prev, -1); |
749 | load_perl (next); |
766 | /* setup coroutine call */ |
|
|
767 | setup_coro (next); |
|
|
768 | /* need a stack */ |
|
|
769 | next->cctx = 0; |
|
|
770 | } |
750 | } |
771 | |
|
|
772 | if (!prev->cctx) |
|
|
773 | /* create a new empty context */ |
|
|
774 | Newz (0, prev->cctx, 1, coro_cctx); |
|
|
775 | |
751 | |
776 | prev__cctx = prev->cctx; |
752 | prev__cctx = prev->cctx; |
777 | |
753 | |
778 | /* possibly "free" the cctx */ |
754 | /* possibly "free" the cctx */ |
779 | if (prev__cctx->idle_sp == STACKLEVEL) |
755 | if (prev__cctx->idle_sp == STACKLEVEL) |
780 | { |
756 | { |
|
|
757 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
|
|
758 | assert (PL_top_env == prev__cctx->top_env); |
|
|
759 | |
|
|
760 | prev->cctx = 0; |
|
|
761 | |
781 | cctx_put (prev__cctx); |
762 | cctx_put (prev__cctx); |
782 | prev->cctx = 0; |
763 | prev__cctx->inuse = 0; |
783 | } |
764 | } |
784 | |
765 | |
785 | if (!next->cctx) |
766 | if (!next->cctx) |
|
|
767 | { |
786 | next->cctx = cctx_get (); |
768 | next->cctx = cctx_get (); |
|
|
769 | assert (!next->cctx->inuse); |
|
|
770 | next->cctx->inuse = 1; |
|
|
771 | } |
787 | |
772 | |
788 | if (prev__cctx != next->cctx) |
773 | if (prev__cctx != next->cctx) |
789 | { |
774 | { |
790 | prev__cctx->top_env = PL_top_env; |
775 | prev__cctx->top_env = PL_top_env; |
791 | PL_top_env = next->cctx->top_env; |
776 | PL_top_env = next->cctx->top_env; |
… | |
… | |
799 | } |
784 | } |
800 | |
785 | |
801 | struct transfer_args |
786 | struct transfer_args |
802 | { |
787 | { |
803 | struct coro *prev, *next; |
788 | struct coro *prev, *next; |
804 | int flags; |
|
|
805 | }; |
789 | }; |
806 | |
790 | |
807 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) |
791 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next) |
808 | |
792 | |
809 | static void |
793 | static void |
810 | coro_state_destroy (struct coro *coro) |
794 | coro_state_destroy (struct coro *coro) |
811 | { |
795 | { |
812 | if (coro->refcnt--) |
796 | if (coro->refcnt--) |
813 | return; |
797 | return; |
814 | |
798 | |
815 | if (coro->mainstack && coro->mainstack != main_mainstack) |
799 | if (coro->mainstack && coro->mainstack != main_mainstack) |
816 | { |
800 | { |
817 | struct coro temp; |
801 | struct coro temp; |
|
|
802 | Zero (&temp, 1, struct coro); |
|
|
803 | temp.save = CORO_SAVE_ALL; |
818 | |
804 | |
819 | SAVE ((&temp), TRANSFER_SAVE_ALL); |
805 | if (coro->flags & CF_RUNNING) |
820 | LOAD (coro); |
806 | croak ("FATAL: tried to destroy currently running coroutine"); |
|
|
807 | |
|
|
808 | save_perl (&temp); |
|
|
809 | load_perl (coro); |
821 | |
810 | |
822 | coro_destroy_stacks (); |
811 | coro_destroy_stacks (); |
823 | |
812 | |
824 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
813 | load_perl (&temp); /* this will get rid of defsv etc.. */ |
825 | |
814 | |
826 | coro->mainstack = 0; |
815 | coro->mainstack = 0; |
827 | } |
816 | } |
828 | |
817 | |
829 | cctx_free (coro->cctx); |
818 | cctx_destroy (coro->cctx); |
830 | SvREFCNT_dec (coro->args); |
819 | SvREFCNT_dec (coro->args); |
831 | Safefree (coro); |
820 | Safefree (coro); |
832 | } |
821 | } |
833 | |
822 | |
834 | static int |
823 | static int |
… | |
… | |
884 | assert (mg->mg_type == PERL_MAGIC_ext); |
873 | assert (mg->mg_type == PERL_MAGIC_ext); |
885 | return (struct coro *)mg->mg_ptr; |
874 | return (struct coro *)mg->mg_ptr; |
886 | } |
875 | } |
887 | |
876 | |
888 | static void |
877 | static void |
889 | prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
878 | prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
890 | { |
879 | { |
891 | ta->prev = SvSTATE (prev); |
880 | ta->prev = SvSTATE (prev_sv); |
892 | ta->next = SvSTATE (next); |
881 | ta->next = SvSTATE (next_sv); |
893 | ta->flags = flags; |
|
|
894 | } |
882 | } |
895 | |
883 | |
896 | static void |
884 | static void |
897 | api_transfer (SV *prev, SV *next, int flags) |
885 | api_transfer (SV *prev_sv, SV *next_sv) |
898 | { |
886 | { |
899 | dTHX; |
|
|
900 | struct transfer_args ta; |
887 | struct transfer_args ta; |
901 | |
888 | |
902 | prepare_transfer (&ta, prev, next, flags); |
889 | prepare_transfer (&ta, prev_sv, next_sv); |
903 | TRANSFER (ta); |
890 | TRANSFER (ta); |
|
|
891 | } |
|
|
892 | |
|
|
893 | static int |
|
|
894 | api_save (SV *coro_sv, int new_save) |
|
|
895 | { |
|
|
896 | struct coro *coro = SvSTATE (coro_sv); |
|
|
897 | int old_save = coro->save; |
|
|
898 | |
|
|
899 | if (new_save >= 0) |
|
|
900 | coro->save = new_save; |
|
|
901 | |
|
|
902 | return old_save; |
904 | } |
903 | } |
905 | |
904 | |
906 | /** Coro ********************************************************************/ |
905 | /** Coro ********************************************************************/ |
907 | |
906 | |
908 | #define PRIO_MAX 3 |
907 | #define PRIO_MAX 3 |
… | |
… | |
911 | #define PRIO_LOW -1 |
910 | #define PRIO_LOW -1 |
912 | #define PRIO_IDLE -3 |
911 | #define PRIO_IDLE -3 |
913 | #define PRIO_MIN -4 |
912 | #define PRIO_MIN -4 |
914 | |
913 | |
915 | /* for Coro.pm */ |
914 | /* for Coro.pm */ |
916 | static GV *coro_current, *coro_idle; |
915 | static SV *coro_current; |
917 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
916 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
918 | static int coro_nready; |
917 | static int coro_nready; |
919 | |
918 | |
920 | static void |
919 | static void |
921 | coro_enq (SV *sv) |
920 | coro_enq (SV *coro_sv) |
922 | { |
921 | { |
923 | int prio; |
|
|
924 | |
|
|
925 | if (SvTYPE (sv) != SVt_PVHV) |
|
|
926 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
927 | |
|
|
928 | prio = SvSTATE (sv)->prio; |
|
|
929 | |
|
|
930 | av_push (coro_ready [prio - PRIO_MIN], sv); |
922 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
931 | coro_nready++; |
923 | coro_nready++; |
932 | } |
924 | } |
933 | |
925 | |
934 | static SV * |
926 | static SV * |
935 | coro_deq (int min_prio) |
927 | coro_deq (int min_prio) |
… | |
… | |
948 | } |
940 | } |
949 | |
941 | |
950 | return 0; |
942 | return 0; |
951 | } |
943 | } |
952 | |
944 | |
953 | static void |
945 | static int |
954 | api_ready (SV *coro) |
946 | api_ready (SV *coro_sv) |
955 | { |
947 | { |
956 | dTHX; |
948 | struct coro *coro; |
957 | |
949 | |
958 | if (SvROK (coro)) |
950 | if (SvROK (coro_sv)) |
959 | coro = SvRV (coro); |
951 | coro_sv = SvRV (coro_sv); |
|
|
952 | |
|
|
953 | coro = SvSTATE (coro_sv); |
|
|
954 | |
|
|
955 | if (coro->flags & CF_READY) |
|
|
956 | return 0; |
|
|
957 | |
|
|
958 | #if 0 /* this is actually harmless */ |
|
|
959 | if (coro->flags & CF_RUNNING) |
|
|
960 | croak ("Coro::ready called on currently running coroutine"); |
|
|
961 | #endif |
|
|
962 | |
|
|
963 | coro->flags |= CF_READY; |
960 | |
964 | |
961 | LOCK; |
965 | LOCK; |
962 | coro_enq (SvREFCNT_inc (coro)); |
966 | coro_enq (SvREFCNT_inc (coro_sv)); |
963 | UNLOCK; |
967 | UNLOCK; |
|
|
968 | |
|
|
969 | return 1; |
|
|
970 | } |
|
|
971 | |
|
|
972 | static int |
|
|
973 | api_is_ready (SV *coro_sv) |
|
|
974 | { |
|
|
975 | return !!SvSTATE (coro_sv)->flags & CF_READY; |
964 | } |
976 | } |
965 | |
977 | |
966 | static void |
978 | static void |
967 | prepare_schedule (struct transfer_args *ta) |
979 | prepare_schedule (struct transfer_args *ta) |
968 | { |
980 | { |
969 | SV *current, *prev, *next; |
981 | SV *prev, *next; |
970 | |
|
|
971 | current = GvSV (coro_current); |
|
|
972 | |
982 | |
973 | for (;;) |
983 | for (;;) |
974 | { |
984 | { |
975 | LOCK; |
985 | LOCK; |
976 | next = coro_deq (PRIO_MIN); |
986 | next = coro_deq (PRIO_MIN); |
… | |
… | |
985 | ENTER; |
995 | ENTER; |
986 | SAVETMPS; |
996 | SAVETMPS; |
987 | |
997 | |
988 | PUSHMARK (SP); |
998 | PUSHMARK (SP); |
989 | PUTBACK; |
999 | PUTBACK; |
990 | call_sv (GvSV (coro_idle), G_DISCARD); |
1000 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
991 | |
1001 | |
992 | FREETMPS; |
1002 | FREETMPS; |
993 | LEAVE; |
1003 | LEAVE; |
994 | } |
1004 | } |
995 | } |
1005 | } |
996 | |
1006 | |
997 | prev = SvRV (current); |
1007 | prev = SvRV (coro_current); |
998 | SvRV (current) = next; |
1008 | SvRV_set (coro_current, next); |
999 | |
1009 | |
1000 | /* free this only after the transfer */ |
1010 | /* free this only after the transfer */ |
1001 | LOCK; |
1011 | LOCK; |
1002 | free_coro_mortal (); |
1012 | free_coro_mortal (); |
1003 | UNLOCK; |
1013 | UNLOCK; |
1004 | coro_mortal = prev; |
1014 | coro_mortal = prev; |
1005 | |
1015 | |
|
|
1016 | assert (!SvROK(prev));//D |
|
|
1017 | assert (!SvROK(next));//D |
|
|
1018 | |
1006 | ta->prev = SvSTATE (prev); |
1019 | ta->prev = SvSTATE (prev); |
1007 | ta->next = SvSTATE (next); |
1020 | ta->next = SvSTATE (next); |
1008 | ta->flags = TRANSFER_SAVE_ALL; |
1021 | |
|
|
1022 | assert (ta->next->flags & CF_READY); |
|
|
1023 | ta->next->flags &= ~CF_READY; |
1009 | } |
1024 | } |
1010 | |
1025 | |
1011 | static void |
1026 | static void |
1012 | prepare_cede (struct transfer_args *ta) |
1027 | prepare_cede (struct transfer_args *ta) |
1013 | { |
1028 | { |
1014 | LOCK; |
1029 | api_ready (coro_current); |
1015 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
1016 | UNLOCK; |
|
|
1017 | |
1030 | |
1018 | prepare_schedule (ta); |
1031 | prepare_schedule (ta); |
1019 | } |
1032 | } |
1020 | |
1033 | |
1021 | static void |
1034 | static void |
1022 | api_schedule (void) |
1035 | api_schedule (void) |
1023 | { |
1036 | { |
1024 | dTHX; |
|
|
1025 | struct transfer_args ta; |
1037 | struct transfer_args ta; |
1026 | |
1038 | |
1027 | prepare_schedule (&ta); |
1039 | prepare_schedule (&ta); |
1028 | TRANSFER (ta); |
1040 | TRANSFER (ta); |
1029 | } |
1041 | } |
1030 | |
1042 | |
1031 | static void |
1043 | static void |
1032 | api_cede (void) |
1044 | api_cede (void) |
1033 | { |
1045 | { |
1034 | dTHX; |
|
|
1035 | struct transfer_args ta; |
1046 | struct transfer_args ta; |
1036 | |
1047 | |
1037 | prepare_cede (&ta); |
1048 | prepare_cede (&ta); |
1038 | TRANSFER (ta); |
1049 | TRANSFER (ta); |
1039 | } |
1050 | } |
… | |
… | |
1049 | #endif |
1060 | #endif |
1050 | BOOT_PAGESIZE; |
1061 | BOOT_PAGESIZE; |
1051 | |
1062 | |
1052 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1063 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1053 | |
1064 | |
1054 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1065 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); |
1055 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1066 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); |
1056 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1067 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV)); |
|
|
1068 | newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV)); |
|
|
1069 | newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); |
1057 | |
1070 | |
1058 | main_mainstack = PL_mainstack; |
1071 | main_mainstack = PL_mainstack; |
1059 | |
1072 | |
1060 | coroapi.ver = CORO_API_VERSION; |
1073 | coroapi.ver = CORO_API_VERSION; |
1061 | coroapi.transfer = api_transfer; |
1074 | coroapi.transfer = api_transfer; |
… | |
… | |
1071 | HV *hv; |
1084 | HV *hv; |
1072 | int i; |
1085 | int i; |
1073 | |
1086 | |
1074 | Newz (0, coro, 1, struct coro); |
1087 | Newz (0, coro, 1, struct coro); |
1075 | coro->args = newAV (); |
1088 | coro->args = newAV (); |
|
|
1089 | coro->save = CORO_SAVE_ALL; |
|
|
1090 | coro->flags = CF_NEW; |
1076 | |
1091 | |
1077 | hv = newHV (); |
1092 | hv = newHV (); |
1078 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1093 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1079 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1094 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1080 | |
1095 | |
1081 | for (i = 1; i < items; i++) |
1096 | for (i = 1; i < items; i++) |
1082 | av_push (coro->args, newSVsv (ST (i))); |
1097 | av_push (coro->args, newSVsv (ST (i))); |
1083 | } |
1098 | } |
1084 | OUTPUT: |
1099 | OUTPUT: |
|
|
1100 | RETVAL |
|
|
1101 | |
|
|
1102 | int |
|
|
1103 | save (SV *coro, int new_save = -1) |
|
|
1104 | CODE: |
|
|
1105 | RETVAL = api_save (coro, new_save); |
|
|
1106 | OUTPUT: |
1085 | RETVAL |
1107 | RETVAL |
1086 | |
1108 | |
1087 | void |
1109 | void |
1088 | _set_stacklevel (...) |
1110 | _set_stacklevel (...) |
1089 | ALIAS: |
1111 | ALIAS: |
1090 | Coro::State::transfer = 1 |
1112 | Coro::State::transfer = 1 |
1091 | Coro::schedule = 2 |
1113 | Coro::schedule = 2 |
1092 | Coro::cede = 3 |
1114 | Coro::cede = 3 |
1093 | Coro::Cont::yield = 4 |
|
|
1094 | CODE: |
1115 | CODE: |
1095 | { |
1116 | { |
1096 | struct transfer_args ta; |
1117 | struct transfer_args ta; |
1097 | |
1118 | |
1098 | switch (ix) |
1119 | switch (ix) |
1099 | { |
1120 | { |
1100 | case 0: |
1121 | case 0: |
1101 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1122 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1102 | ta.next = 0; |
1123 | ta.next = 0; |
1103 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1104 | break; |
1124 | break; |
1105 | |
1125 | |
1106 | case 1: |
1126 | case 1: |
1107 | if (items != 3) |
1127 | if (items != 2) |
1108 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
1128 | croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
1109 | |
1129 | |
1110 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
1130 | prepare_transfer (&ta, ST (0), ST (1)); |
1111 | break; |
1131 | break; |
1112 | |
1132 | |
1113 | case 2: |
1133 | case 2: |
1114 | prepare_schedule (&ta); |
1134 | prepare_schedule (&ta); |
1115 | break; |
1135 | break; |
1116 | |
1136 | |
1117 | case 3: |
1137 | case 3: |
1118 | prepare_cede (&ta); |
1138 | prepare_cede (&ta); |
1119 | break; |
1139 | break; |
1120 | |
|
|
1121 | case 4: |
|
|
1122 | { |
|
|
1123 | SV *yieldstack; |
|
|
1124 | SV *sv; |
|
|
1125 | AV *defav = GvAV (PL_defgv); |
|
|
1126 | |
|
|
1127 | yieldstack = *hv_fetch ( |
|
|
1128 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1129 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1130 | 0 |
|
|
1131 | ); |
|
|
1132 | |
|
|
1133 | /* set up @_ -- ugly */ |
|
|
1134 | av_clear (defav); |
|
|
1135 | av_fill (defav, items - 1); |
|
|
1136 | while (items--) |
|
|
1137 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1138 | |
|
|
1139 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1140 | ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1141 | ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1142 | ta.flags = 0; |
|
|
1143 | SvREFCNT_dec (sv); |
|
|
1144 | } |
|
|
1145 | break; |
|
|
1146 | |
|
|
1147 | } |
1140 | } |
1148 | |
1141 | |
1149 | TRANSFER (ta); |
1142 | TRANSFER (ta); |
1150 | } |
1143 | } |
1151 | |
1144 | |
… | |
… | |
1195 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1188 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1196 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1189 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1197 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1190 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1198 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1191 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1199 | |
1192 | |
1200 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1193 | coro_current = get_sv ("Coro::current", FALSE); |
1201 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1194 | SvREADONLY_on (coro_current); |
1202 | |
1195 | |
1203 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1196 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1204 | coro_ready[i] = newAV (); |
1197 | coro_ready[i] = newAV (); |
1205 | |
1198 | |
1206 | { |
1199 | { |
1207 | SV *sv = perl_get_sv("Coro::API", 1); |
1200 | SV *sv = perl_get_sv("Coro::API", 1); |
1208 | |
1201 | |
1209 | coroapi.schedule = api_schedule; |
1202 | coroapi.schedule = api_schedule; |
|
|
1203 | coroapi.save = api_save; |
1210 | coroapi.cede = api_cede; |
1204 | coroapi.cede = api_cede; |
1211 | coroapi.ready = api_ready; |
1205 | coroapi.ready = api_ready; |
|
|
1206 | coroapi.is_ready = api_is_ready; |
1212 | coroapi.nready = &coro_nready; |
1207 | coroapi.nready = &coro_nready; |
1213 | coroapi.current = coro_current; |
1208 | coroapi.current = coro_current; |
1214 | |
1209 | |
1215 | GCoroAPI = &coroapi; |
1210 | GCoroAPI = &coroapi; |
1216 | sv_setiv (sv, (IV)&coroapi); |
1211 | sv_setiv (sv, (IV)&coroapi); |
1217 | SvREADONLY_on (sv); |
1212 | SvREADONLY_on (sv); |
1218 | } |
1213 | } |
1219 | } |
1214 | } |
|
|
1215 | |
|
|
1216 | void |
|
|
1217 | _set_current (SV *current) |
|
|
1218 | PROTOTYPE: $ |
|
|
1219 | CODE: |
|
|
1220 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
1221 | SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1220 | |
1222 | |
1221 | int |
1223 | int |
1222 | prio (Coro::State coro, int newprio = 0) |
1224 | prio (Coro::State coro, int newprio = 0) |
1223 | ALIAS: |
1225 | ALIAS: |
1224 | nice = 1 |
1226 | nice = 1 |
… | |
… | |
1236 | |
1238 | |
1237 | coro->prio = newprio; |
1239 | coro->prio = newprio; |
1238 | } |
1240 | } |
1239 | } |
1241 | } |
1240 | |
1242 | |
1241 | void |
1243 | SV * |
1242 | ready (SV *self) |
1244 | ready (SV *self) |
1243 | PROTOTYPE: $ |
1245 | PROTOTYPE: $ |
1244 | CODE: |
1246 | CODE: |
1245 | api_ready (self); |
1247 | RETVAL = boolSV (api_ready (self)); |
|
|
1248 | OUTPUT: |
|
|
1249 | RETVAL |
|
|
1250 | |
|
|
1251 | SV * |
|
|
1252 | is_ready (SV *self) |
|
|
1253 | PROTOTYPE: $ |
|
|
1254 | CODE: |
|
|
1255 | RETVAL = boolSV (api_is_ready (self)); |
|
|
1256 | OUTPUT: |
|
|
1257 | RETVAL |
1246 | |
1258 | |
1247 | int |
1259 | int |
1248 | nready (...) |
1260 | nready (...) |
1249 | PROTOTYPE: |
1261 | PROTOTYPE: |
1250 | CODE: |
1262 | CODE: |
… | |
… | |
1256 | |
1268 | |
1257 | SV * |
1269 | SV * |
1258 | _get_state () |
1270 | _get_state () |
1259 | CODE: |
1271 | CODE: |
1260 | { |
1272 | { |
1261 | struct { |
1273 | struct io_state *data; |
1262 | int errorno; |
|
|
1263 | int laststype; |
|
|
1264 | int laststatval; |
|
|
1265 | Stat_t statcache; |
|
|
1266 | } data; |
|
|
1267 | |
1274 | |
|
|
1275 | RETVAL = newSV (sizeof (struct io_state)); |
|
|
1276 | data = (struct io_state *)SvPVX (RETVAL); |
|
|
1277 | SvCUR_set (RETVAL, sizeof (struct io_state)); |
|
|
1278 | SvPOK_only (RETVAL); |
|
|
1279 | |
1268 | data.errorno = errno; |
1280 | data->errorno = errno; |
1269 | data.laststype = PL_laststype; |
1281 | data->laststype = PL_laststype; |
1270 | data.laststatval = PL_laststatval; |
1282 | data->laststatval = PL_laststatval; |
1271 | data.statcache = PL_statcache; |
1283 | data->statcache = PL_statcache; |
1272 | |
|
|
1273 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1274 | } |
1284 | } |
1275 | OUTPUT: |
1285 | OUTPUT: |
1276 | RETVAL |
1286 | RETVAL |
1277 | |
1287 | |
1278 | void |
1288 | void |
1279 | _set_state (char *data_) |
1289 | _set_state (char *data_) |
1280 | PROTOTYPE: $ |
1290 | PROTOTYPE: $ |
1281 | CODE: |
1291 | CODE: |
1282 | { |
1292 | { |
1283 | struct { |
1293 | struct io_state *data = (void *)data_; |
1284 | int errorno; |
|
|
1285 | int laststype; |
|
|
1286 | int laststatval; |
|
|
1287 | Stat_t statcache; |
|
|
1288 | } *data = (void *)data_; |
|
|
1289 | |
1294 | |
1290 | errno = data->errorno; |
1295 | errno = data->errorno; |
1291 | PL_laststype = data->laststype; |
1296 | PL_laststype = data->laststype; |
1292 | PL_laststatval = data->laststatval; |
1297 | PL_laststatval = data->laststatval; |
1293 | PL_statcache = data->statcache; |
1298 | PL_statcache = data->statcache; |
1294 | } |
1299 | } |
|
|
1300 | |