1 | #define PERL_NO_GET_CONTEXT |
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2 | |
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3 | #include "libcoro/coro.c" |
1 | #include "libcoro/coro.c" |
4 | |
2 | |
5 | #include "EXTERN.h" |
3 | #include "EXTERN.h" |
6 | #include "perl.h" |
4 | #include "perl.h" |
7 | #include "XSUB.h" |
5 | #include "XSUB.h" |
8 | |
6 | |
9 | #include "patchlevel.h" |
7 | #include "patchlevel.h" |
10 | |
8 | |
11 | #if PERL_VERSION < 6 |
9 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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10 | (PERL_REVISION > (a) \ |
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11 | || (PERL_REVISION == (a) \ |
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12 | && (PERL_VERSION > (b) \ |
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13 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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14 | |
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15 | #if !PERL_VERSION_ATLEAST (5,8,0) |
12 | # ifndef PL_ppaddr |
16 | # ifndef PL_ppaddr |
13 | # define PL_ppaddr ppaddr |
17 | # define PL_ppaddr ppaddr |
14 | # endif |
18 | # endif |
15 | # ifndef call_sv |
19 | # ifndef call_sv |
16 | # define call_sv perl_call_sv |
20 | # define call_sv perl_call_sv |
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… | |
27 | # ifndef IS_PADCONST |
31 | # ifndef IS_PADCONST |
28 | # define IS_PADCONST(v) 0 |
32 | # define IS_PADCONST(v) 0 |
29 | # endif |
33 | # endif |
30 | #endif |
34 | #endif |
31 | |
35 | |
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36 | #include <stdio.h> |
32 | #include <errno.h> |
37 | #include <errno.h> |
33 | |
38 | |
34 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
39 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
35 | # undef STACKGUARD |
40 | # undef STACKGUARD |
36 | #endif |
41 | #endif |
… | |
… | |
57 | # else |
62 | # else |
58 | # define BOOT_PAGESIZE |
63 | # define BOOT_PAGESIZE |
59 | # endif |
64 | # endif |
60 | #endif |
65 | #endif |
61 | |
66 | |
62 | #define SUB_INIT "Coro::State::initialize" |
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63 | #define UCORO_STATE "_coro_state" |
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64 | |
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65 | /* The next macro should declare a variable stacklevel that contains and approximation |
67 | /* The next macro should declare a variable stacklevel that contains and approximation |
66 | * to the current C stack pointer. Its property is that it changes with each call |
68 | * to the current C stack pointer. Its property is that it changes with each call |
67 | * and should be unique. */ |
69 | * and should be unique. */ |
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70 | #define dSTACKLEVEL int stacklevel |
68 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
71 | #define STACKLEVEL ((void *)&stacklevel) |
69 | |
72 | |
70 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
73 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
71 | |
74 | |
72 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
75 | #if __GNUC__ >= 3 |
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76 | # define attribute(x) __attribute__(x) |
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77 | #else |
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78 | # define attribute(x) |
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79 | #endif |
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80 | |
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81 | #define NOINLINE attribute ((noinline)) |
73 | |
82 | |
74 | #include "CoroAPI.h" |
83 | #include "CoroAPI.h" |
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84 | |
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85 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
75 | |
86 | |
76 | #ifdef USE_ITHREADS |
87 | #ifdef USE_ITHREADS |
77 | static perl_mutex coro_mutex; |
88 | static perl_mutex coro_mutex; |
78 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
89 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
79 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
90 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
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82 | # define UNLOCK (void)0 |
93 | # define UNLOCK (void)0 |
83 | #endif |
94 | #endif |
84 | |
95 | |
85 | static struct CoroAPI coroapi; |
96 | static struct CoroAPI coroapi; |
86 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
97 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
87 | static HV *coro_state_stash; |
98 | static HV *coro_state_stash, *coro_stash; |
88 | static SV *ucoro_state_sv; |
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89 | static U32 ucoro_state_hash; |
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90 | static SV *coro_mortal; /* will be freed after next transfer */ |
99 | static SV *coro_mortal; /* will be freed after next transfer */ |
91 | |
100 | |
92 | /* this is actually not only the c stack but also c registers etc... */ |
101 | /* this is a structure representing a c-level coroutine */ |
93 | typedef struct { |
102 | typedef struct coro_stack { |
94 | int refcnt; /* pointer reference counter */ |
103 | struct coro_stack *next; |
95 | int usecnt; /* shared by how many coroutines */ |
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96 | int gencnt; /* generation counter */ |
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97 | |
104 | |
98 | coro_context cctx; |
105 | /* the stack */ |
99 | |
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100 | void *sptr; |
106 | void *sptr; |
101 | long ssize; /* positive == mmap, otherwise malloc */ |
107 | long ssize; /* positive == mmap, otherwise malloc */ |
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108 | |
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109 | /* cpu state */ |
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110 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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111 | JMPENV *top_env; |
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112 | coro_context cctx; |
102 | } coro_stack; |
113 | } coro_stack; |
103 | |
114 | |
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115 | /* this is a structure representing a perl-level coroutine */ |
104 | struct coro { |
116 | struct coro { |
105 | /* the optional C context */ |
117 | /* the c coroutine allocated to this perl coroutine, if any */ |
106 | coro_stack *stack; |
118 | coro_stack *stack; |
107 | void *cursp; |
119 | |
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120 | /* data associated with this coroutine (initial args) */ |
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121 | AV *args; |
108 | int gencnt; |
122 | int refcnt; |
109 | |
123 | |
110 | /* optionally saved, might be zero */ |
124 | /* optionally saved, might be zero */ |
111 | AV *defav; |
125 | AV *defav; |
112 | SV *defsv; |
126 | SV *defsv; |
113 | SV *errsv; |
127 | SV *errsv; |
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143 | OP **retstack; |
157 | OP **retstack; |
144 | I32 retstack_ix; |
158 | I32 retstack_ix; |
145 | I32 retstack_max; |
159 | I32 retstack_max; |
146 | PMOP *curpm; |
160 | PMOP *curpm; |
147 | COP *curcop; |
161 | COP *curcop; |
148 | JMPENV *top_env; |
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149 | |
162 | |
150 | /* coro process data */ |
163 | /* coro process data */ |
151 | int prio; |
164 | int prio; |
152 | |
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153 | /* data associated with this coroutine (initial args) */ |
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154 | AV *args; |
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155 | int refcnt; |
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156 | }; |
165 | }; |
157 | |
166 | |
158 | typedef struct coro *Coro__State; |
167 | typedef struct coro *Coro__State; |
159 | typedef struct coro *Coro__State_or_hashref; |
168 | typedef struct coro *Coro__State_or_hashref; |
160 | |
169 | |
161 | static AV * |
170 | static AV * |
162 | coro_clone_padlist (pTHX_ CV *cv) |
171 | coro_clone_padlist (CV *cv) |
163 | { |
172 | { |
164 | AV *padlist = CvPADLIST (cv); |
173 | AV *padlist = CvPADLIST (cv); |
165 | AV *newpadlist, *newpad; |
174 | AV *newpadlist, *newpad; |
166 | |
175 | |
167 | newpadlist = newAV (); |
176 | newpadlist = newAV (); |
168 | AvREAL_off (newpadlist); |
177 | AvREAL_off (newpadlist); |
169 | #if PERL_VERSION < 9 |
178 | #if PERL_VERSION_ATLEAST (5,9,0) |
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179 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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180 | #else |
170 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
181 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
171 | #else |
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172 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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173 | #endif |
182 | #endif |
174 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
183 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
175 | --AvFILLp (padlist); |
184 | --AvFILLp (padlist); |
176 | |
185 | |
177 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
186 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
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179 | |
188 | |
180 | return newpadlist; |
189 | return newpadlist; |
181 | } |
190 | } |
182 | |
191 | |
183 | static void |
192 | static void |
184 | free_padlist (pTHX_ AV *padlist) |
193 | free_padlist (AV *padlist) |
185 | { |
194 | { |
186 | /* may be during global destruction */ |
195 | /* may be during global destruction */ |
187 | if (SvREFCNT (padlist)) |
196 | if (SvREFCNT (padlist)) |
188 | { |
197 | { |
189 | I32 i = AvFILLp (padlist); |
198 | I32 i = AvFILLp (padlist); |
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210 | AV *padlist; |
219 | AV *padlist; |
211 | AV *av = (AV *)mg->mg_obj; |
220 | AV *av = (AV *)mg->mg_obj; |
212 | |
221 | |
213 | /* casting is fun. */ |
222 | /* casting is fun. */ |
214 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
223 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
215 | free_padlist (aTHX_ padlist); |
224 | free_padlist (padlist); |
216 | |
225 | |
217 | SvREFCNT_dec (av); |
226 | SvREFCNT_dec (av); |
218 | |
227 | |
219 | return 0; |
228 | return 0; |
220 | } |
229 | } |
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223 | |
232 | |
224 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
233 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
225 | |
234 | |
226 | /* the next two functions merely cache the padlists */ |
235 | /* the next two functions merely cache the padlists */ |
227 | static void |
236 | static void |
228 | get_padlist (pTHX_ CV *cv) |
237 | get_padlist (CV *cv) |
229 | { |
238 | { |
230 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
239 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
231 | |
240 | |
232 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
241 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
233 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
242 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
234 | else |
243 | else |
235 | { |
244 | { |
236 | #if 0 |
245 | #if 0 |
237 | /* this should work - but it doesn't :( */ |
246 | /* this is probably cleaner, but also slower? */ |
238 | CV *cp = Perl_cv_clone (aTHX_ cv); |
247 | CV *cp = Perl_cv_clone (cv); |
239 | CvPADLIST (cv) = CvPADLIST (cp); |
248 | CvPADLIST (cv) = CvPADLIST (cp); |
240 | CvPADLIST (cp) = 0; |
249 | CvPADLIST (cp) = 0; |
241 | SvREFCNT_dec (cp); |
250 | SvREFCNT_dec (cp); |
242 | #else |
251 | #else |
243 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
252 | CvPADLIST (cv) = coro_clone_padlist (cv); |
244 | #endif |
253 | #endif |
245 | } |
254 | } |
246 | } |
255 | } |
247 | |
256 | |
248 | static void |
257 | static void |
249 | put_padlist (pTHX_ CV *cv) |
258 | put_padlist (CV *cv) |
250 | { |
259 | { |
251 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
260 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
252 | |
261 | |
253 | if (!mg) |
262 | if (!mg) |
254 | { |
263 | { |
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262 | } |
271 | } |
263 | |
272 | |
264 | #define SB do { |
273 | #define SB do { |
265 | #define SE } while (0) |
274 | #define SE } while (0) |
266 | |
275 | |
267 | #define LOAD(state) load_state(aTHX_ (state)); |
276 | #define LOAD(state) load_state((state)); |
268 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
277 | #define SAVE(state,flags) save_state((state),(flags)); |
269 | |
278 | |
270 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
279 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
271 | |
280 | |
272 | static void |
281 | static void |
273 | load_state(pTHX_ Coro__State c) |
282 | load_state(Coro__State c) |
274 | { |
283 | { |
275 | PL_dowarn = c->dowarn; |
284 | PL_dowarn = c->dowarn; |
276 | PL_in_eval = c->in_eval; |
285 | PL_in_eval = c->in_eval; |
277 | |
286 | |
278 | PL_curstackinfo = c->curstackinfo; |
287 | PL_curstackinfo = c->curstackinfo; |
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296 | PL_scopestack_ix = c->scopestack_ix; |
305 | PL_scopestack_ix = c->scopestack_ix; |
297 | PL_scopestack_max = c->scopestack_max; |
306 | PL_scopestack_max = c->scopestack_max; |
298 | PL_savestack = c->savestack; |
307 | PL_savestack = c->savestack; |
299 | PL_savestack_ix = c->savestack_ix; |
308 | PL_savestack_ix = c->savestack_ix; |
300 | PL_savestack_max = c->savestack_max; |
309 | PL_savestack_max = c->savestack_max; |
301 | #if PERL_VERSION < 9 |
310 | #if !PERL_VERSION_ATLEAST (5,9,0) |
302 | PL_retstack = c->retstack; |
311 | PL_retstack = c->retstack; |
303 | PL_retstack_ix = c->retstack_ix; |
312 | PL_retstack_ix = c->retstack_ix; |
304 | PL_retstack_max = c->retstack_max; |
313 | PL_retstack_max = c->retstack_max; |
305 | #endif |
314 | #endif |
306 | PL_curpm = c->curpm; |
315 | PL_curpm = c->curpm; |
307 | PL_curcop = c->curcop; |
316 | PL_curcop = c->curcop; |
308 | PL_top_env = c->top_env; |
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309 | |
317 | |
310 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
318 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
311 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
319 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
312 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
320 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
313 | |
321 | |
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320 | { |
328 | { |
321 | AV *padlist = (AV *)POPs; |
329 | AV *padlist = (AV *)POPs; |
322 | |
330 | |
323 | if (padlist) |
331 | if (padlist) |
324 | { |
332 | { |
325 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
333 | put_padlist (cv); /* mark this padlist as available */ |
326 | CvPADLIST(cv) = padlist; |
334 | CvPADLIST(cv) = padlist; |
327 | } |
335 | } |
328 | |
336 | |
329 | ++CvDEPTH(cv); |
337 | ++CvDEPTH(cv); |
330 | } |
338 | } |
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332 | PUTBACK; |
340 | PUTBACK; |
333 | } |
341 | } |
334 | } |
342 | } |
335 | |
343 | |
336 | static void |
344 | static void |
337 | save_state(pTHX_ Coro__State c, int flags) |
345 | save_state(Coro__State c, int flags) |
338 | { |
346 | { |
339 | { |
347 | { |
340 | dSP; |
348 | dSP; |
341 | I32 cxix = cxstack_ix; |
349 | I32 cxix = cxstack_ix; |
342 | PERL_CONTEXT *ccstk = cxstack; |
350 | PERL_CONTEXT *ccstk = cxstack; |
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370 | } |
378 | } |
371 | |
379 | |
372 | PUSHs ((SV *)CvPADLIST(cv)); |
380 | PUSHs ((SV *)CvPADLIST(cv)); |
373 | PUSHs ((SV *)cv); |
381 | PUSHs ((SV *)cv); |
374 | |
382 | |
375 | get_padlist (aTHX_ cv); |
383 | get_padlist (cv); |
376 | } |
384 | } |
377 | } |
385 | } |
378 | #ifdef CXt_FORMAT |
386 | #ifdef CXt_FORMAT |
379 | else if (CxTYPE(cx) == CXt_FORMAT) |
387 | else if (CxTYPE(cx) == CXt_FORMAT) |
380 | { |
388 | { |
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424 | c->scopestack_ix = PL_scopestack_ix; |
432 | c->scopestack_ix = PL_scopestack_ix; |
425 | c->scopestack_max = PL_scopestack_max; |
433 | c->scopestack_max = PL_scopestack_max; |
426 | c->savestack = PL_savestack; |
434 | c->savestack = PL_savestack; |
427 | c->savestack_ix = PL_savestack_ix; |
435 | c->savestack_ix = PL_savestack_ix; |
428 | c->savestack_max = PL_savestack_max; |
436 | c->savestack_max = PL_savestack_max; |
429 | #if PERL_VERSION < 9 |
437 | #if !PERL_VERSION_ATLEAST (5,9,0) |
430 | c->retstack = PL_retstack; |
438 | c->retstack = PL_retstack; |
431 | c->retstack_ix = PL_retstack_ix; |
439 | c->retstack_ix = PL_retstack_ix; |
432 | c->retstack_max = PL_retstack_max; |
440 | c->retstack_max = PL_retstack_max; |
433 | #endif |
441 | #endif |
434 | c->curpm = PL_curpm; |
442 | c->curpm = PL_curpm; |
435 | c->curcop = PL_curcop; |
443 | c->curcop = PL_curcop; |
436 | c->top_env = PL_top_env; |
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437 | } |
444 | } |
438 | |
445 | |
439 | /* |
446 | /* |
440 | * allocate various perl stacks. This is an exact copy |
447 | * allocate various perl stacks. This is an exact copy |
441 | * of perl.c:init_stacks, except that it uses less memory |
448 | * of perl.c:init_stacks, except that it uses less memory |
442 | * on the (sometimes correct) assumption that coroutines do |
449 | * on the (sometimes correct) assumption that coroutines do |
443 | * not usually need a lot of stackspace. |
450 | * not usually need a lot of stackspace. |
444 | */ |
451 | */ |
445 | static void |
452 | static void |
446 | coro_init_stacks (pTHX) |
453 | coro_init_stacks () |
447 | { |
454 | { |
448 | LOCK; |
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449 | |
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450 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
455 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
451 | PL_curstackinfo->si_type = PERLSI_MAIN; |
456 | PL_curstackinfo->si_type = PERLSI_MAIN; |
452 | PL_curstack = PL_curstackinfo->si_stack; |
457 | PL_curstack = PL_curstackinfo->si_stack; |
453 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
458 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
454 | |
459 | |
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475 | |
480 | |
476 | New(54,PL_savestack,96,ANY); |
481 | New(54,PL_savestack,96,ANY); |
477 | PL_savestack_ix = 0; |
482 | PL_savestack_ix = 0; |
478 | PL_savestack_max = 96; |
483 | PL_savestack_max = 96; |
479 | |
484 | |
480 | #if PERL_VERSION < 9 |
485 | #if !PERL_VERSION_ATLEAST (5,9,0) |
481 | New(54,PL_retstack,8,OP*); |
486 | New(54,PL_retstack,8,OP*); |
482 | PL_retstack_ix = 0; |
487 | PL_retstack_ix = 0; |
483 | PL_retstack_max = 8; |
488 | PL_retstack_max = 8; |
484 | #endif |
489 | #endif |
485 | |
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486 | UNLOCK; |
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487 | } |
490 | } |
488 | |
491 | |
489 | /* |
492 | /* |
490 | * destroy the stacks, the callchain etc... |
493 | * destroy the stacks, the callchain etc... |
491 | */ |
494 | */ |
492 | static void |
495 | static void |
493 | destroy_stacks(pTHX) |
496 | destroy_stacks() |
494 | { |
497 | { |
495 | if (!IN_DESTRUCT) |
498 | if (!IN_DESTRUCT) |
496 | { |
499 | { |
497 | /* is this ugly, I ask? */ |
500 | /* is this ugly, I ask? */ |
498 | LEAVE_SCOPE (0); |
501 | LEAVE_SCOPE (0); |
… | |
… | |
529 | |
532 | |
530 | Safefree (PL_tmps_stack); |
533 | Safefree (PL_tmps_stack); |
531 | Safefree (PL_markstack); |
534 | Safefree (PL_markstack); |
532 | Safefree (PL_scopestack); |
535 | Safefree (PL_scopestack); |
533 | Safefree (PL_savestack); |
536 | Safefree (PL_savestack); |
534 | #if PERL_VERSION < 9 |
537 | #if !PERL_VERSION_ATLEAST (5,9,0) |
535 | Safefree (PL_retstack); |
538 | Safefree (PL_retstack); |
536 | #endif |
539 | #endif |
537 | } |
540 | } |
538 | |
541 | |
539 | static void |
542 | static void |
540 | allocate_stack (Coro__State ctx, int alloc) |
543 | setup_coro (struct coro *coro) |
541 | { |
|
|
542 | coro_stack *stack; |
|
|
543 | |
|
|
544 | New (0, stack, 1, coro_stack); |
|
|
545 | |
|
|
546 | stack->refcnt = 1; |
|
|
547 | stack->usecnt = 1; |
|
|
548 | stack->gencnt = ctx->gencnt = 0; |
|
|
549 | |
|
|
550 | if (alloc) |
|
|
551 | { |
|
|
552 | #if HAVE_MMAP |
|
|
553 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */ |
|
|
554 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
555 | if (stack->sptr != (void *)-1) |
|
|
556 | { |
|
|
557 | # if STACKGUARD |
|
|
558 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
559 | # endif |
|
|
560 | } |
|
|
561 | else |
|
|
562 | #endif |
|
|
563 | { |
|
|
564 | stack->ssize = - (STACKSIZE * (long)sizeof (long)); |
|
|
565 | New (0, stack->sptr, STACKSIZE, long); |
|
|
566 | } |
|
|
567 | } |
|
|
568 | else |
|
|
569 | stack->sptr = 0; |
|
|
570 | |
|
|
571 | ctx->stack = stack; |
|
|
572 | } |
|
|
573 | |
|
|
574 | static void |
|
|
575 | deallocate_stack (Coro__State ctx) |
|
|
576 | { |
|
|
577 | coro_stack *stack = ctx->stack; |
|
|
578 | |
|
|
579 | ctx->stack = 0; |
|
|
580 | |
|
|
581 | if (stack) |
|
|
582 | { |
|
|
583 | if (!--stack->refcnt) |
|
|
584 | { |
|
|
585 | #ifdef HAVE_MMAP |
|
|
586 | if (stack->ssize > 0 && stack->sptr) |
|
|
587 | munmap (stack->sptr, stack->ssize); |
|
|
588 | else |
|
|
589 | #endif |
|
|
590 | Safefree (stack->sptr); |
|
|
591 | |
|
|
592 | Safefree (stack); |
|
|
593 | } |
|
|
594 | else if (ctx->gencnt == stack->gencnt) |
|
|
595 | --stack->usecnt; |
|
|
596 | } |
|
|
597 | } |
|
|
598 | |
|
|
599 | static void |
|
|
600 | setup_coro (void *arg) |
|
|
601 | { |
544 | { |
602 | /* |
545 | /* |
603 | * emulate part of the perl startup here. |
546 | * emulate part of the perl startup here. |
604 | */ |
547 | */ |
605 | dTHX; |
548 | dTHX; |
606 | dSP; |
549 | dSP; |
607 | Coro__State ctx = (Coro__State)arg; |
550 | UNOP myop; |
608 | SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE); |
551 | SV *sub_init = (SV *)get_cv ("Coro::State::coro_init", FALSE); |
609 | |
552 | |
610 | coro_init_stacks (aTHX); |
553 | coro_init_stacks (); |
611 | /*PL_curcop = 0;*/ |
554 | /*PL_curcop = 0;*/ |
612 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
555 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
613 | SvREFCNT_dec (GvAV (PL_defgv)); |
556 | SvREFCNT_dec (GvAV (PL_defgv)); |
614 | GvAV (PL_defgv) = ctx->args; ctx->args = 0; |
557 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
615 | |
558 | |
616 | SPAGAIN; |
559 | SPAGAIN; |
617 | |
560 | |
618 | if (ctx->stack) |
|
|
619 | { |
|
|
620 | ctx->cursp = 0; |
|
|
621 | |
|
|
622 | PUSHMARK(SP); |
|
|
623 | PUTBACK; |
|
|
624 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
625 | |
|
|
626 | if (SvTRUE (ERRSV)) |
|
|
627 | croak (NULL); |
|
|
628 | else |
|
|
629 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
630 | } |
|
|
631 | else |
|
|
632 | { |
|
|
633 | UNOP myop; |
|
|
634 | |
|
|
635 | Zero(&myop, 1, UNOP); |
561 | Zero (&myop, 1, UNOP); |
636 | myop.op_next = Nullop; |
562 | myop.op_next = Nullop; |
637 | myop.op_flags = OPf_WANT_VOID; |
563 | myop.op_flags = OPf_WANT_VOID; |
638 | |
564 | |
639 | PL_op = (OP *)&myop; |
565 | PL_op = (OP *)&myop; |
640 | |
566 | |
641 | PUSHMARK(SP); |
567 | PUSHMARK(SP); |
642 | XPUSHs (sub_init); |
568 | XPUSHs (sub_init); |
643 | /* |
|
|
644 | * the next line is slightly wrong, as PL_op->op_next |
|
|
645 | * is actually being executed so we skip the first op. |
|
|
646 | * that doesn't matter, though, since it is only |
|
|
647 | * pp_nextstate and we never return... |
|
|
648 | * ah yes, and I don't care anyways ;) |
|
|
649 | */ |
|
|
650 | PUTBACK; |
569 | PUTBACK; |
651 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
570 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
652 | SPAGAIN; |
571 | SPAGAIN; |
653 | |
572 | |
654 | ENTER; /* necessary e.g. for dounwind */ |
573 | ENTER; /* necessary e.g. for dounwind */ |
655 | } |
|
|
656 | } |
574 | } |
657 | |
575 | |
658 | static void |
576 | static void |
659 | continue_coro (void *arg) |
577 | free_coro_mortal () |
660 | { |
578 | { |
661 | /* |
|
|
662 | * this is a _very_ stripped down perl interpreter ;) |
|
|
663 | */ |
|
|
664 | dTHX; |
|
|
665 | Coro__State ctx = (Coro__State)arg; |
|
|
666 | |
|
|
667 | PL_top_env = &PL_start_env; |
|
|
668 | |
|
|
669 | ctx->cursp = 0; |
|
|
670 | PL_op = PL_op->op_next; |
|
|
671 | CALLRUNOPS(aTHX); |
|
|
672 | |
|
|
673 | abort (); |
|
|
674 | } |
|
|
675 | |
|
|
676 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
677 | static void |
|
|
678 | transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
679 | { |
|
|
680 | dSTACKLEVEL; |
|
|
681 | |
|
|
682 | if (prev != next) |
|
|
683 | { |
|
|
684 | /* has this coro been created yet? */ |
|
|
685 | if (next->mainstack) |
|
|
686 | { |
|
|
687 | LOCK; |
|
|
688 | SAVE (prev, flags); |
|
|
689 | LOAD (next); |
|
|
690 | UNLOCK; |
|
|
691 | |
|
|
692 | /* mark this state as in-use */ |
|
|
693 | next->mainstack = 0; |
|
|
694 | next->tmps_ix = -2; |
|
|
695 | |
|
|
696 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
697 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
698 | { |
|
|
699 | if (!prev->stack) |
|
|
700 | allocate_stack (prev, 0); |
|
|
701 | else if (prev->cursp != stacklevel |
|
|
702 | && prev->stack->usecnt > 1) |
|
|
703 | { |
|
|
704 | prev->gencnt = ++prev->stack->gencnt; |
|
|
705 | prev->stack->usecnt = 1; |
|
|
706 | } |
|
|
707 | |
|
|
708 | /* has our stack been invalidated? */ |
|
|
709 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
710 | { |
|
|
711 | deallocate_stack (next); |
|
|
712 | allocate_stack (next, 1); |
|
|
713 | coro_create (&(next->stack->cctx), |
|
|
714 | continue_coro, (void *)next, |
|
|
715 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
716 | } |
|
|
717 | |
|
|
718 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
719 | prev->cursp = stacklevel; |
|
|
720 | /* don't add any code here */ |
|
|
721 | } |
|
|
722 | else |
|
|
723 | next->cursp = stacklevel; |
|
|
724 | } |
|
|
725 | else if (next->tmps_ix == -2) |
|
|
726 | croak ("tried to transfer to running coroutine"); |
|
|
727 | else |
|
|
728 | { |
|
|
729 | LOCK; |
|
|
730 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
731 | UNLOCK; |
|
|
732 | |
|
|
733 | /* create the coroutine for the first time */ |
|
|
734 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
735 | { |
|
|
736 | if (!prev->stack) |
|
|
737 | allocate_stack (prev, 0); |
|
|
738 | |
|
|
739 | /* the new coroutine starts with start_env again */ |
|
|
740 | PL_top_env = &PL_start_env; |
|
|
741 | |
|
|
742 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
743 | { |
|
|
744 | setup_coro (next); |
|
|
745 | next->cursp = stacklevel; |
|
|
746 | |
|
|
747 | prev->stack->refcnt++; |
|
|
748 | prev->stack->usecnt++; |
|
|
749 | next->stack = prev->stack; |
|
|
750 | next->gencnt = prev->gencnt; |
|
|
751 | } |
|
|
752 | else |
|
|
753 | { |
|
|
754 | assert (!next->stack); |
|
|
755 | allocate_stack (next, 1); |
|
|
756 | coro_create (&(next->stack->cctx), |
|
|
757 | setup_coro, (void *)next, |
|
|
758 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
759 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
760 | prev->cursp = stacklevel; |
|
|
761 | /* don't add any code here */ |
|
|
762 | } |
|
|
763 | } |
|
|
764 | else |
|
|
765 | { |
|
|
766 | setup_coro (next); |
|
|
767 | next->cursp = stacklevel; |
|
|
768 | } |
|
|
769 | } |
|
|
770 | } |
|
|
771 | |
|
|
772 | LOCK; |
|
|
773 | if (coro_mortal) |
579 | if (coro_mortal) |
774 | { |
580 | { |
775 | SvREFCNT_dec (coro_mortal); |
581 | SvREFCNT_dec (coro_mortal); |
776 | coro_mortal = 0; |
582 | coro_mortal = 0; |
777 | } |
583 | } |
|
|
584 | } |
|
|
585 | |
|
|
586 | static void NOINLINE |
|
|
587 | prepare_cctx (coro_stack *cctx) |
|
|
588 | { |
|
|
589 | dSP; |
|
|
590 | UNOP myop; |
|
|
591 | |
|
|
592 | Zero (&myop, 1, UNOP); |
|
|
593 | myop.op_next = PL_op; |
|
|
594 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
|
|
595 | |
|
|
596 | PUSHMARK(SP); |
|
|
597 | EXTEND (SP, 2); |
|
|
598 | PUSHs (newSViv (PTR2IV (cctx))); |
|
|
599 | PUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE)); |
|
|
600 | PUTBACK; |
|
|
601 | PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
602 | SPAGAIN; |
|
|
603 | } |
|
|
604 | |
|
|
605 | static void |
|
|
606 | coro_run (void *arg) |
|
|
607 | { |
|
|
608 | /* |
|
|
609 | * this is a _very_ stripped down perl interpreter ;) |
|
|
610 | */ |
778 | UNLOCK; |
611 | UNLOCK; |
779 | } |
|
|
780 | |
612 | |
781 | /* use this function pointer to call the above function */ |
613 | PL_top_env = &PL_start_env; |
782 | /* this is done to increase chances of the compiler not inlining the call */ |
614 | prepare_cctx ((coro_stack *)arg); |
783 | void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl; |
|
|
784 | |
615 | |
785 | #define SV_CORO(sv,func) \ |
616 | /* somebody will hit me for both perl_run and PL_restartop */ |
786 | do { \ |
617 | perl_run (PERL_GET_CONTEXT); |
787 | if (SvROK (sv)) \ |
618 | |
788 | sv = SvRV (sv); \ |
619 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr); |
789 | \ |
620 | abort (); |
790 | if (SvTYPE (sv) == SVt_PVHV && SvSTASH (sv) != coro_state_stash) \ |
621 | } |
791 | { \ |
622 | |
792 | HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
623 | static coro_stack * |
793 | \ |
624 | stack_new () |
794 | if (!he) \ |
625 | { |
795 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
626 | coro_stack *stack; |
796 | \ |
627 | |
797 | (sv) = SvRV (HeVAL(he)); \ |
628 | New (0, stack, 1, coro_stack); |
798 | } \ |
629 | |
799 | \ |
630 | #if HAVE_MMAP |
800 | /* must also be changed inside Coro::Cont::yield */ \ |
631 | |
801 | if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \ |
632 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
802 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
633 | /* mmap suppsedly does allocate-on-write for us */ |
803 | \ |
634 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
804 | } while(0) |
635 | |
|
|
636 | if (stack->sptr == (void *)-1) |
|
|
637 | { |
|
|
638 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
639 | _exit (EXIT_FAILURE); |
|
|
640 | } |
|
|
641 | |
|
|
642 | # if STACKGUARD |
|
|
643 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
644 | # endif |
|
|
645 | |
|
|
646 | #else |
|
|
647 | |
|
|
648 | stack->ssize = STACKSIZE * (long)sizeof (long); |
|
|
649 | New (0, stack->sptr, STACKSIZE, long); |
|
|
650 | |
|
|
651 | if (!stack->sptr) |
|
|
652 | { |
|
|
653 | perror (stderr, "FATAL: unable to malloc stack for coroutine"); |
|
|
654 | _exit (EXIT_FAILURE); |
|
|
655 | } |
|
|
656 | |
|
|
657 | #endif |
|
|
658 | |
|
|
659 | coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize); |
|
|
660 | |
|
|
661 | return stack; |
|
|
662 | } |
|
|
663 | |
|
|
664 | static void |
|
|
665 | stack_free (coro_stack *stack) |
|
|
666 | { |
|
|
667 | if (!stack) |
|
|
668 | return; |
|
|
669 | |
|
|
670 | #if HAVE_MMAP |
|
|
671 | munmap (stack->sptr, stack->ssize); |
|
|
672 | #else |
|
|
673 | Safefree (stack->sptr); |
|
|
674 | #endif |
|
|
675 | |
|
|
676 | Safefree (stack); |
|
|
677 | } |
|
|
678 | |
|
|
679 | static coro_stack *stack_first; |
|
|
680 | |
|
|
681 | static coro_stack * |
|
|
682 | stack_get () |
|
|
683 | { |
|
|
684 | coro_stack *stack; |
|
|
685 | |
|
|
686 | if (stack_first) |
|
|
687 | { |
|
|
688 | stack = stack_first; |
|
|
689 | stack_first = stack->next; |
|
|
690 | } |
|
|
691 | else |
|
|
692 | { |
|
|
693 | stack = stack_new (); |
|
|
694 | PL_op = PL_op->op_next; |
|
|
695 | } |
|
|
696 | |
|
|
697 | return stack; |
|
|
698 | } |
|
|
699 | |
|
|
700 | static void |
|
|
701 | stack_put (coro_stack *stack) |
|
|
702 | { |
|
|
703 | stack->next = stack_first; |
|
|
704 | stack_first = stack; |
|
|
705 | } |
|
|
706 | |
|
|
707 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
708 | static void NOINLINE |
|
|
709 | transfer (struct coro *prev, struct coro *next, int flags) |
|
|
710 | { |
|
|
711 | dSTACKLEVEL; |
|
|
712 | |
|
|
713 | /* sometimes transfer is only called to set idle_sp */ |
|
|
714 | if (flags == TRANSFER_SET_STACKLEVEL) |
|
|
715 | ((coro_stack *)prev)->idle_sp = STACKLEVEL; |
|
|
716 | else if (prev != next) |
|
|
717 | { |
|
|
718 | coro_stack *prev__stack; |
|
|
719 | |
|
|
720 | LOCK; |
|
|
721 | |
|
|
722 | if (next->mainstack) |
|
|
723 | { |
|
|
724 | /* coroutine already started */ |
|
|
725 | SAVE (prev, flags); |
|
|
726 | LOAD (next); |
|
|
727 | } |
|
|
728 | else |
|
|
729 | { |
|
|
730 | /* need to start coroutine */ |
|
|
731 | /* first get rid of the old state */ |
|
|
732 | SAVE (prev, -1); |
|
|
733 | /* setup coroutine call */ |
|
|
734 | setup_coro (next); |
|
|
735 | /* need a stack */ |
|
|
736 | next->stack = 0; |
|
|
737 | } |
|
|
738 | |
|
|
739 | if (!prev->stack) |
|
|
740 | /* create a new empty context */ |
|
|
741 | Newz (0, prev->stack, 1, coro_stack); |
|
|
742 | |
|
|
743 | prev__stack = prev->stack; |
|
|
744 | |
|
|
745 | /* possibly "free" the stack */ |
|
|
746 | if (prev__stack->idle_sp == STACKLEVEL) |
|
|
747 | { |
|
|
748 | stack_put (prev__stack); |
|
|
749 | prev->stack = 0; |
|
|
750 | } |
|
|
751 | |
|
|
752 | if (!next->stack) |
|
|
753 | next->stack = stack_get (); |
|
|
754 | |
|
|
755 | if (prev__stack != next->stack) |
|
|
756 | { |
|
|
757 | prev__stack->top_env = PL_top_env; |
|
|
758 | PL_top_env = next->stack->top_env; |
|
|
759 | coro_transfer (&prev__stack->cctx, &next->stack->cctx); |
|
|
760 | } |
|
|
761 | |
|
|
762 | free_coro_mortal (); |
|
|
763 | |
|
|
764 | UNLOCK; |
|
|
765 | } |
|
|
766 | } |
|
|
767 | |
|
|
768 | struct transfer_args |
|
|
769 | { |
|
|
770 | struct coro *prev, *next; |
|
|
771 | int flags; |
|
|
772 | }; |
|
|
773 | |
|
|
774 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) |
805 | |
775 | |
806 | static void |
776 | static void |
807 | coro_state_destroy (struct coro *coro) |
777 | coro_state_destroy (struct coro *coro) |
808 | { |
778 | { |
809 | if (coro->refcnt--) |
779 | if (coro->refcnt--) |
… | |
… | |
811 | |
781 | |
812 | if (coro->mainstack && coro->mainstack != main_mainstack) |
782 | if (coro->mainstack && coro->mainstack != main_mainstack) |
813 | { |
783 | { |
814 | struct coro temp; |
784 | struct coro temp; |
815 | |
785 | |
816 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
786 | SAVE ((&temp), TRANSFER_SAVE_ALL); |
817 | LOAD (aTHX_ coro); |
787 | LOAD (coro); |
818 | |
788 | |
819 | destroy_stacks (aTHX); |
789 | destroy_stacks (); |
820 | |
790 | |
821 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
791 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
822 | |
792 | |
823 | coro->mainstack = 0; |
793 | coro->mainstack = 0; |
824 | } |
794 | } |
825 | |
795 | |
826 | deallocate_stack (coro); |
796 | stack_free (coro->stack); |
827 | SvREFCNT_dec (coro->args); |
797 | SvREFCNT_dec (coro->args); |
828 | Safefree (coro); |
798 | Safefree (coro); |
829 | } |
799 | } |
830 | |
800 | |
831 | static int |
801 | static int |
832 | coro_state_clear (SV *sv, MAGIC *mg) |
802 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
833 | { |
803 | { |
834 | struct coro *coro = (struct coro *)mg->mg_ptr; |
804 | struct coro *coro = (struct coro *)mg->mg_ptr; |
835 | mg->mg_ptr = 0; |
805 | mg->mg_ptr = 0; |
836 | |
806 | |
837 | coro_state_destroy (coro); |
807 | coro_state_destroy (coro); |
838 | |
808 | |
839 | return 0; |
809 | return 0; |
840 | } |
810 | } |
841 | |
811 | |
842 | static int |
812 | static int |
843 | coro_state_dup (MAGIC *mg, CLONE_PARAMS *params) |
813 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
844 | { |
814 | { |
845 | struct coro *coro = (struct coro *)mg->mg_ptr; |
815 | struct coro *coro = (struct coro *)mg->mg_ptr; |
846 | |
816 | |
847 | ++coro->refcnt; |
817 | ++coro->refcnt; |
848 | |
818 | |
849 | return 0; |
819 | return 0; |
850 | } |
820 | } |
851 | |
821 | |
852 | static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 }; |
822 | static MGVTBL coro_state_vtbl = { |
|
|
823 | 0, 0, 0, 0, |
|
|
824 | coro_state_clear, |
|
|
825 | 0, |
|
|
826 | #ifdef MGf_DUP |
|
|
827 | coro_state_dup, |
|
|
828 | #endif |
|
|
829 | }; |
853 | |
830 | |
854 | static struct coro * |
831 | static struct coro * |
855 | SvSTATE (SV *coro) |
832 | SvSTATE (SV *coro) |
856 | { |
833 | { |
857 | MAGIC *mg = SvMAGIC (SvROK (coro) ? SvRV (coro) : coro); |
834 | HV *stash; |
|
|
835 | MAGIC *mg; |
|
|
836 | |
|
|
837 | if (SvROK (coro)) |
|
|
838 | coro = SvRV (coro); |
|
|
839 | |
|
|
840 | stash = SvSTASH (coro); |
|
|
841 | if (stash != coro_stash && stash != coro_state_stash) |
|
|
842 | { |
|
|
843 | /* very slow, but rare, check */ |
|
|
844 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
845 | croak ("Coro::State object required"); |
|
|
846 | } |
|
|
847 | |
|
|
848 | mg = SvMAGIC (coro); |
858 | assert (mg->mg_type == PERL_MAGIC_ext); |
849 | assert (mg->mg_type == PERL_MAGIC_ext); |
859 | return (struct coro *)mg->mg_ptr; |
850 | return (struct coro *)mg->mg_ptr; |
860 | } |
851 | } |
861 | |
852 | |
862 | static void |
853 | static void |
|
|
854 | prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
|
|
855 | { |
|
|
856 | ta->prev = SvSTATE (prev); |
|
|
857 | ta->next = SvSTATE (next); |
|
|
858 | ta->flags = flags; |
|
|
859 | } |
|
|
860 | |
|
|
861 | static void |
863 | api_transfer (pTHX_ SV *prev, SV *next, int flags) |
862 | api_transfer (SV *prev, SV *next, int flags) |
864 | { |
863 | { |
865 | SV_CORO (prev, "Coro::transfer"); |
864 | dTHX; |
866 | SV_CORO (next, "Coro::transfer"); |
865 | struct transfer_args ta; |
867 | |
866 | |
868 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
867 | prepare_transfer (&ta, prev, next, flags); |
|
|
868 | TRANSFER (ta); |
869 | } |
869 | } |
870 | |
870 | |
871 | /** Coro ********************************************************************/ |
871 | /** Coro ********************************************************************/ |
872 | |
872 | |
873 | #define PRIO_MAX 3 |
873 | #define PRIO_MAX 3 |
… | |
… | |
881 | static GV *coro_current, *coro_idle; |
881 | static GV *coro_current, *coro_idle; |
882 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
882 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
883 | static int coro_nready; |
883 | static int coro_nready; |
884 | |
884 | |
885 | static void |
885 | static void |
886 | coro_enq (pTHX_ SV *sv) |
886 | coro_enq (SV *sv) |
887 | { |
887 | { |
888 | int prio; |
888 | int prio; |
889 | |
889 | |
890 | if (SvTYPE (sv) != SVt_PVHV) |
890 | if (SvTYPE (sv) != SVt_PVHV) |
891 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
891 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
892 | |
892 | |
893 | { |
|
|
894 | SV *coro = sv; |
|
|
895 | SV_CORO (coro, "omg"); |
|
|
896 | prio = SvSTATE (coro)->prio; |
893 | prio = SvSTATE (sv)->prio; |
897 | } |
|
|
898 | |
894 | |
899 | av_push (coro_ready [prio - PRIO_MIN], sv); |
895 | av_push (coro_ready [prio - PRIO_MIN], sv); |
900 | coro_nready++; |
896 | coro_nready++; |
901 | } |
897 | } |
902 | |
898 | |
903 | static SV * |
899 | static SV * |
904 | coro_deq (pTHX_ int min_prio) |
900 | coro_deq (int min_prio) |
905 | { |
901 | { |
906 | int prio = PRIO_MAX - PRIO_MIN; |
902 | int prio = PRIO_MAX - PRIO_MIN; |
907 | |
903 | |
908 | min_prio -= PRIO_MIN; |
904 | min_prio -= PRIO_MIN; |
909 | if (min_prio < 0) |
905 | if (min_prio < 0) |
… | |
… | |
926 | |
922 | |
927 | if (SvROK (coro)) |
923 | if (SvROK (coro)) |
928 | coro = SvRV (coro); |
924 | coro = SvRV (coro); |
929 | |
925 | |
930 | LOCK; |
926 | LOCK; |
931 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
927 | coro_enq (SvREFCNT_inc (coro)); |
932 | UNLOCK; |
928 | UNLOCK; |
933 | } |
929 | } |
934 | |
930 | |
935 | static void |
931 | static void |
|
|
932 | prepare_schedule (struct transfer_args *ta) |
|
|
933 | { |
|
|
934 | SV *current, *prev, *next; |
|
|
935 | |
|
|
936 | current = GvSV (coro_current); |
|
|
937 | |
|
|
938 | for (;;) |
|
|
939 | { |
|
|
940 | LOCK; |
|
|
941 | next = coro_deq (PRIO_MIN); |
|
|
942 | UNLOCK; |
|
|
943 | |
|
|
944 | if (next) |
|
|
945 | break; |
|
|
946 | |
|
|
947 | { |
|
|
948 | dSP; |
|
|
949 | |
|
|
950 | ENTER; |
|
|
951 | SAVETMPS; |
|
|
952 | |
|
|
953 | PUSHMARK (SP); |
|
|
954 | PUTBACK; |
|
|
955 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
956 | |
|
|
957 | FREETMPS; |
|
|
958 | LEAVE; |
|
|
959 | } |
|
|
960 | } |
|
|
961 | |
|
|
962 | prev = SvRV (current); |
|
|
963 | SvRV (current) = next; |
|
|
964 | |
|
|
965 | /* free this only after the transfer */ |
|
|
966 | LOCK; |
|
|
967 | free_coro_mortal (); |
|
|
968 | UNLOCK; |
|
|
969 | coro_mortal = prev; |
|
|
970 | |
|
|
971 | ta->prev = SvSTATE (prev); |
|
|
972 | ta->next = SvSTATE (next); |
|
|
973 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
974 | } |
|
|
975 | |
|
|
976 | static void |
|
|
977 | prepare_cede (struct transfer_args *ta) |
|
|
978 | { |
|
|
979 | LOCK; |
|
|
980 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
981 | UNLOCK; |
|
|
982 | |
|
|
983 | prepare_schedule (ta); |
|
|
984 | } |
|
|
985 | |
|
|
986 | static void |
936 | api_schedule (void) |
987 | api_schedule (void) |
937 | { |
988 | { |
938 | dTHX; |
989 | dTHX; |
|
|
990 | struct transfer_args ta; |
939 | |
991 | |
940 | SV *prev, *next; |
992 | prepare_schedule (&ta); |
941 | |
993 | TRANSFER (ta); |
942 | LOCK; |
|
|
943 | |
|
|
944 | prev = SvRV (GvSV (coro_current)); |
|
|
945 | next = coro_deq (aTHX_ PRIO_MIN); |
|
|
946 | |
|
|
947 | if (!next) |
|
|
948 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
|
|
949 | |
|
|
950 | /* free this only after the transfer */ |
|
|
951 | coro_mortal = prev; |
|
|
952 | SV_CORO (prev, "Coro::schedule"); |
|
|
953 | |
|
|
954 | SvRV (GvSV (coro_current)) = next; |
|
|
955 | |
|
|
956 | SV_CORO (next, "Coro::schedule"); |
|
|
957 | |
|
|
958 | UNLOCK; |
|
|
959 | |
|
|
960 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
|
|
961 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
962 | } |
994 | } |
963 | |
995 | |
964 | static void |
996 | static void |
965 | api_cede (void) |
997 | api_cede (void) |
966 | { |
998 | { |
967 | dTHX; |
999 | dTHX; |
|
|
1000 | struct transfer_args ta; |
968 | |
1001 | |
969 | LOCK; |
1002 | prepare_cede (&ta); |
970 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
1003 | TRANSFER (ta); |
971 | UNLOCK; |
|
|
972 | |
|
|
973 | api_schedule (); |
|
|
974 | } |
1004 | } |
975 | |
1005 | |
976 | MODULE = Coro::State PACKAGE = Coro::State |
1006 | MODULE = Coro::State PACKAGE = Coro::State |
977 | |
1007 | |
978 | PROTOTYPES: DISABLE |
1008 | PROTOTYPES: DISABLE |
979 | |
1009 | |
980 | BOOT: |
1010 | BOOT: |
981 | { /* {} necessary for stoopid perl-5.6.x */ |
1011 | { |
982 | #ifdef USE_ITHREADS |
1012 | #ifdef USE_ITHREADS |
983 | MUTEX_INIT (&coro_mutex); |
1013 | MUTEX_INIT (&coro_mutex); |
984 | #endif |
1014 | #endif |
985 | BOOT_PAGESIZE; |
1015 | BOOT_PAGESIZE; |
986 | |
1016 | |
987 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
|
|
988 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
|
|
989 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1017 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
990 | |
1018 | |
991 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1019 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
992 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1020 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
993 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1021 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
994 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
|
|
995 | |
1022 | |
996 | main_mainstack = PL_mainstack; |
1023 | main_mainstack = PL_mainstack; |
997 | |
1024 | |
998 | coroapi.ver = CORO_API_VERSION; |
1025 | coroapi.ver = CORO_API_VERSION; |
999 | coroapi.transfer = api_transfer; |
1026 | coroapi.transfer = api_transfer; |
… | |
… | |
1010 | int i; |
1037 | int i; |
1011 | |
1038 | |
1012 | Newz (0, coro, 1, struct coro); |
1039 | Newz (0, coro, 1, struct coro); |
1013 | coro->args = newAV (); |
1040 | coro->args = newAV (); |
1014 | |
1041 | |
1015 | for (i = 1; i < items; i++) |
|
|
1016 | av_push (coro->args, newSVsv (ST (i))); |
|
|
1017 | |
|
|
1018 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
|
|
1019 | /*coro->stack = 0;*/ |
|
|
1020 | |
|
|
1021 | hv = newHV (); |
1042 | hv = newHV (); |
1022 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1043 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1023 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1044 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
|
|
1045 | |
|
|
1046 | for (i = 1; i < items; i++) |
|
|
1047 | av_push (coro->args, newSVsv (ST (i))); |
|
|
1048 | |
|
|
1049 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
|
|
1050 | /*coro->stack = 0;*/ |
1024 | } |
1051 | } |
1025 | OUTPUT: |
1052 | OUTPUT: |
1026 | RETVAL |
1053 | RETVAL |
1027 | |
1054 | |
1028 | void |
1055 | void |
1029 | transfer(prev, next, flags) |
1056 | _set_stacklevel (...) |
1030 | SV *prev |
1057 | ALIAS: |
1031 | SV *next |
1058 | Coro::State::transfer = 1 |
1032 | int flags |
1059 | Coro::schedule = 2 |
|
|
1060 | Coro::cede = 3 |
|
|
1061 | Coro::Cont::yield = 4 |
1033 | CODE: |
1062 | CODE: |
1034 | PUTBACK; |
|
|
1035 | SV_CORO (next, "Coro::transfer"); |
|
|
1036 | SV_CORO (prev, "Coro::transfer"); |
|
|
1037 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
|
|
1038 | SPAGAIN; |
|
|
1039 | |
|
|
1040 | int |
|
|
1041 | prio (Coro::State coro, int newprio = 0) |
|
|
1042 | ALIAS: |
|
|
1043 | nice = 1 |
|
|
1044 | CODE: |
|
|
1045 | { |
1063 | { |
1046 | RETVAL = coro->prio; |
1064 | struct transfer_args ta; |
1047 | |
1065 | |
1048 | if (items > 1) |
1066 | switch (ix) |
1049 | { |
1067 | { |
|
|
1068 | case 0: |
|
|
1069 | ta.prev = (struct coro *)INT2PTR (coro_stack *, SvIV (ST (0))); |
|
|
1070 | ta.next = 0; |
|
|
1071 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1072 | break; |
|
|
1073 | |
|
|
1074 | case 1: |
1050 | if (ix) |
1075 | if (items != 3) |
1051 | newprio += coro->prio; |
1076 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
1052 | |
1077 | |
1053 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1078 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
1054 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1079 | break; |
1055 | |
1080 | |
1056 | coro->prio = newprio; |
1081 | case 2: |
|
|
1082 | prepare_schedule (&ta); |
|
|
1083 | break; |
|
|
1084 | |
|
|
1085 | case 3: |
|
|
1086 | prepare_cede (&ta); |
|
|
1087 | break; |
|
|
1088 | |
|
|
1089 | case 4: |
|
|
1090 | { |
|
|
1091 | SV *yieldstack; |
|
|
1092 | SV *sv; |
|
|
1093 | AV *defav = GvAV (PL_defgv); |
|
|
1094 | |
|
|
1095 | yieldstack = *hv_fetch ( |
|
|
1096 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1097 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1098 | 0 |
|
|
1099 | ); |
|
|
1100 | |
|
|
1101 | /* set up @_ -- ugly */ |
|
|
1102 | av_clear (defav); |
|
|
1103 | av_fill (defav, items - 1); |
|
|
1104 | while (items--) |
|
|
1105 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1106 | |
|
|
1107 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1108 | ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1109 | ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1110 | ta.flags = 0; |
|
|
1111 | SvREFCNT_dec (sv); |
|
|
1112 | } |
|
|
1113 | break; |
|
|
1114 | |
1057 | } |
1115 | } |
|
|
1116 | |
|
|
1117 | TRANSFER (ta); |
1058 | } |
1118 | } |
1059 | |
1119 | |
1060 | void |
1120 | void |
1061 | _clone_state_from (SV *dst, SV *src) |
1121 | _clone_state_from (SV *dst, SV *src) |
1062 | CODE: |
1122 | CODE: |
… | |
… | |
1074 | int code |
1134 | int code |
1075 | PROTOTYPE: $ |
1135 | PROTOTYPE: $ |
1076 | CODE: |
1136 | CODE: |
1077 | _exit (code); |
1137 | _exit (code); |
1078 | |
1138 | |
1079 | MODULE = Coro::State PACKAGE = Coro::Cont |
|
|
1080 | |
|
|
1081 | void |
|
|
1082 | yield (...) |
|
|
1083 | PROTOTYPE: @ |
|
|
1084 | CODE: |
|
|
1085 | SV *yieldstack; |
|
|
1086 | SV *sv; |
|
|
1087 | AV *defav = GvAV (PL_defgv); |
|
|
1088 | struct coro *prev, *next; |
|
|
1089 | |
|
|
1090 | yieldstack = *hv_fetch ( |
|
|
1091 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1092 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1093 | 0 |
|
|
1094 | ); |
|
|
1095 | |
|
|
1096 | /* set up @_ -- ugly */ |
|
|
1097 | av_clear (defav); |
|
|
1098 | av_fill (defav, items - 1); |
|
|
1099 | while (items--) |
|
|
1100 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1101 | |
|
|
1102 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1103 | prev = SvSTATE ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
1104 | next = SvSTATE ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
1105 | SvREFCNT_dec (sv); |
|
|
1106 | |
|
|
1107 | coro_state_transfer (aTHX_ prev, next, 0); |
|
|
1108 | |
|
|
1109 | MODULE = Coro::State PACKAGE = Coro |
1139 | MODULE = Coro::State PACKAGE = Coro |
1110 | |
1140 | |
1111 | BOOT: |
1141 | BOOT: |
1112 | { |
1142 | { |
1113 | int i; |
1143 | int i; |
|
|
1144 | |
1114 | HV *stash = gv_stashpv ("Coro", TRUE); |
1145 | coro_stash = gv_stashpv ("Coro", TRUE); |
1115 | |
1146 | |
1116 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1147 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1117 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1148 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1118 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1149 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1119 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1150 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1120 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1151 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1121 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1152 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1122 | |
1153 | |
1123 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1154 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1124 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1155 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1125 | |
1156 | |
1126 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1157 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
… | |
… | |
1139 | sv_setiv (sv, (IV)&coroapi); |
1170 | sv_setiv (sv, (IV)&coroapi); |
1140 | SvREADONLY_on (sv); |
1171 | SvREADONLY_on (sv); |
1141 | } |
1172 | } |
1142 | } |
1173 | } |
1143 | |
1174 | |
1144 | #if !PERL_MICRO |
1175 | int |
|
|
1176 | prio (Coro::State coro, int newprio = 0) |
|
|
1177 | ALIAS: |
|
|
1178 | nice = 1 |
|
|
1179 | CODE: |
|
|
1180 | { |
|
|
1181 | RETVAL = coro->prio; |
|
|
1182 | |
|
|
1183 | if (items > 1) |
|
|
1184 | { |
|
|
1185 | if (ix) |
|
|
1186 | newprio += coro->prio; |
|
|
1187 | |
|
|
1188 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
1189 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
1190 | |
|
|
1191 | coro->prio = newprio; |
|
|
1192 | } |
|
|
1193 | } |
1145 | |
1194 | |
1146 | void |
1195 | void |
1147 | ready (self) |
1196 | ready (SV *self) |
1148 | SV * self |
|
|
1149 | PROTOTYPE: $ |
1197 | PROTOTYPE: $ |
1150 | CODE: |
1198 | CODE: |
1151 | api_ready (self); |
1199 | api_ready (self); |
1152 | |
|
|
1153 | #endif |
|
|
1154 | |
1200 | |
1155 | int |
1201 | int |
1156 | nready (...) |
1202 | nready (...) |
1157 | PROTOTYPE: |
1203 | PROTOTYPE: |
1158 | CODE: |
1204 | CODE: |
1159 | RETVAL = coro_nready; |
1205 | RETVAL = coro_nready; |
1160 | OUTPUT: |
1206 | OUTPUT: |
1161 | RETVAL |
1207 | RETVAL |
1162 | |
1208 | |
1163 | void |
1209 | MODULE = Coro::State PACKAGE = Coro::AIO |
1164 | schedule (...) |
|
|
1165 | PROTOTYPE: |
|
|
1166 | CODE: |
|
|
1167 | api_schedule (); |
|
|
1168 | |
1210 | |
1169 | void |
|
|
1170 | cede (...) |
|
|
1171 | PROTOTYPE: |
|
|
1172 | CODE: |
|
|
1173 | api_cede (); |
|
|
1174 | |
|
|
1175 | # and these are hacks |
|
|
1176 | SV * |
1211 | SV * |
1177 | _aio_get_state () |
1212 | _get_state () |
1178 | CODE: |
1213 | CODE: |
1179 | { |
1214 | { |
1180 | struct { |
1215 | struct { |
1181 | int errorno; |
1216 | int errorno; |
1182 | int laststype; |
1217 | int laststype; |
… | |
… | |
1193 | } |
1228 | } |
1194 | OUTPUT: |
1229 | OUTPUT: |
1195 | RETVAL |
1230 | RETVAL |
1196 | |
1231 | |
1197 | void |
1232 | void |
1198 | _aio_set_state (char *data_) |
1233 | _set_state (char *data_) |
1199 | PROTOTYPE: $ |
1234 | PROTOTYPE: $ |
1200 | CODE: |
1235 | CODE: |
1201 | { |
1236 | { |
1202 | struct { |
1237 | struct { |
1203 | int errorno; |
1238 | int errorno; |