… | |
… | |
4 | #include "perl.h" |
4 | #include "perl.h" |
5 | #include "XSUB.h" |
5 | #include "XSUB.h" |
6 | |
6 | |
7 | #include "patchlevel.h" |
7 | #include "patchlevel.h" |
8 | |
8 | |
9 | #if USE_VALGRIND |
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10 | # include <valgrind/valgrind.h> |
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11 | #endif |
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12 | |
|
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13 | /* the maximum number of idle cctx that will be pooled */ |
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14 | #define MAX_IDLE_CCTX 8 |
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15 | |
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16 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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17 | (PERL_REVISION > (a) \ |
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18 | || (PERL_REVISION == (a) \ |
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19 | && (PERL_VERSION > (b) \ |
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20 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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21 | |
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22 | #if !PERL_VERSION_ATLEAST (5,6,0) |
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23 | # ifndef PL_ppaddr |
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24 | # define PL_ppaddr ppaddr |
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25 | # endif |
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26 | # ifndef call_sv |
|
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27 | # define call_sv perl_call_sv |
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28 | # endif |
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29 | # ifndef get_sv |
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30 | # define get_sv perl_get_sv |
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31 | # endif |
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32 | # ifndef get_cv |
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33 | # define get_cv perl_get_cv |
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34 | # endif |
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35 | # ifndef IS_PADGV |
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36 | # define IS_PADGV(v) 0 |
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37 | # endif |
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38 | # ifndef IS_PADCONST |
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39 | # define IS_PADCONST(v) 0 |
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40 | # endif |
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41 | #endif |
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42 | |
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43 | #include <stdio.h> |
9 | #include <stdio.h> |
44 | #include <errno.h> |
10 | #include <errno.h> |
45 | |
11 | #include <assert.h> |
46 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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47 | # undef STACKGUARD |
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48 | #endif |
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49 | |
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50 | #ifndef STACKGUARD |
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51 | # define STACKGUARD 0 |
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52 | #endif |
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53 | |
12 | |
54 | #ifdef HAVE_MMAP |
13 | #ifdef HAVE_MMAP |
55 | # include <unistd.h> |
14 | # include <unistd.h> |
56 | # include <sys/mman.h> |
15 | # include <sys/mman.h> |
57 | # ifndef MAP_ANONYMOUS |
16 | # ifndef MAP_ANONYMOUS |
… | |
… | |
72 | #else |
31 | #else |
73 | # define PAGESIZE 0 |
32 | # define PAGESIZE 0 |
74 | # define BOOT_PAGESIZE (void)0 |
33 | # define BOOT_PAGESIZE (void)0 |
75 | #endif |
34 | #endif |
76 | |
35 | |
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36 | #if USE_VALGRIND |
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37 | # include <valgrind/valgrind.h> |
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38 | #endif |
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39 | |
|
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40 | /* the maximum number of idle cctx that will be pooled */ |
|
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41 | #define MAX_IDLE_CCTX 8 |
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42 | |
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43 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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44 | (PERL_REVISION > (a) \ |
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45 | || (PERL_REVISION == (a) \ |
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46 | && (PERL_VERSION > (b) \ |
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47 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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48 | |
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49 | #if !PERL_VERSION_ATLEAST (5,6,0) |
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50 | # ifndef PL_ppaddr |
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51 | # define PL_ppaddr ppaddr |
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52 | # endif |
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53 | # ifndef call_sv |
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54 | # define call_sv perl_call_sv |
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55 | # endif |
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56 | # ifndef get_sv |
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57 | # define get_sv perl_get_sv |
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58 | # endif |
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59 | # ifndef get_cv |
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60 | # define get_cv perl_get_cv |
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61 | # endif |
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62 | # ifndef IS_PADGV |
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63 | # define IS_PADGV(v) 0 |
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64 | # endif |
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65 | # ifndef IS_PADCONST |
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66 | # define IS_PADCONST(v) 0 |
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67 | # endif |
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68 | #endif |
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69 | |
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70 | /* 5.8.7 */ |
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71 | #ifndef SvRV_set |
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72 | # define SvRV_set(s,v) SvRV(s) = (v) |
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73 | #endif |
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74 | |
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75 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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76 | # undef STACKGUARD |
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77 | #endif |
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78 | |
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79 | #ifndef STACKGUARD |
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80 | # define STACKGUARD 0 |
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81 | #endif |
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82 | |
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83 | /* prefer perl internal functions over our own? */ |
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84 | #ifndef PREFER_PERL_FUNCTIONS |
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85 | # define PREFER_PERL_FUNCTIONS 0 |
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86 | #endif |
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87 | |
77 | /* The next macro should declare a variable stacklevel that contains and approximation |
88 | /* The next macro should declare a variable stacklevel that contains and approximation |
78 | * to the current C stack pointer. Its property is that it changes with each call |
89 | * to the current C stack pointer. Its property is that it changes with each call |
79 | * and should be unique. */ |
90 | * and should be unique. */ |
80 | #define dSTACKLEVEL int stacklevel |
91 | #define dSTACKLEVEL int stacklevel |
81 | #define STACKLEVEL ((void *)&stacklevel) |
92 | #define STACKLEVEL ((void *)&stacklevel) |
… | |
… | |
89 | #endif |
100 | #endif |
90 | |
101 | |
91 | #define NOINLINE attribute ((noinline)) |
102 | #define NOINLINE attribute ((noinline)) |
92 | |
103 | |
93 | #include "CoroAPI.h" |
104 | #include "CoroAPI.h" |
94 | |
|
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95 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
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96 | |
105 | |
97 | #ifdef USE_ITHREADS |
106 | #ifdef USE_ITHREADS |
98 | static perl_mutex coro_mutex; |
107 | static perl_mutex coro_mutex; |
99 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
108 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
100 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
109 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
101 | #else |
110 | #else |
102 | # define LOCK (void)0 |
111 | # define LOCK (void)0 |
103 | # define UNLOCK (void)0 |
112 | # define UNLOCK (void)0 |
104 | #endif |
113 | #endif |
105 | |
114 | |
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115 | struct io_state |
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116 | { |
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117 | int errorno; |
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118 | I32 laststype; |
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119 | int laststatval; |
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120 | Stat_t statcache; |
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121 | }; |
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122 | |
106 | static struct CoroAPI coroapi; |
123 | static struct CoroAPI coroapi; |
107 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
124 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
108 | static HV *coro_state_stash, *coro_stash; |
125 | static HV *coro_state_stash, *coro_stash; |
109 | static SV *coro_mortal; /* will be freed after next transfer */ |
126 | static SV *coro_mortal; /* will be freed after next transfer */ |
110 | |
127 | |
… | |
… | |
143 | coro_cctx *cctx; |
160 | coro_cctx *cctx; |
144 | |
161 | |
145 | /* data associated with this coroutine (initial args) */ |
162 | /* data associated with this coroutine (initial args) */ |
146 | AV *args; |
163 | AV *args; |
147 | int refcnt; |
164 | int refcnt; |
148 | int flags; |
165 | int save; /* CORO_SAVE flags */ |
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166 | int flags; /* CF_ flags */ |
149 | |
167 | |
150 | /* optionally saved, might be zero */ |
168 | /* optionally saved, might be zero */ |
151 | AV *defav; |
169 | AV *defav; /* @_ */ |
152 | SV *defsv; |
170 | SV *defsv; /* $_ */ |
153 | SV *errsv; |
171 | SV *errsv; /* $@ */ |
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172 | SV *irssv; /* $/ */ |
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173 | SV *irssv_sv; /* real $/ cache */ |
154 | |
174 | |
155 | #define VAR(name,type) type name; |
175 | #define VAR(name,type) type name; |
156 | # include "state.h" |
176 | # include "state.h" |
157 | #undef VAR |
177 | #undef VAR |
158 | |
178 | |
… | |
… | |
244 | |
264 | |
245 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
265 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
246 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
266 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
247 | else |
267 | else |
248 | { |
268 | { |
249 | #if 0 |
269 | #if PREFER_PERL_FUNCTIONS |
250 | /* this is probably cleaner, but also slower? */ |
270 | /* this is probably cleaner, but also slower? */ |
251 | CV *cp = Perl_cv_clone (cv); |
271 | CV *cp = Perl_cv_clone (cv); |
252 | CvPADLIST (cv) = CvPADLIST (cp); |
272 | CvPADLIST (cv) = CvPADLIST (cp); |
253 | CvPADLIST (cp) = 0; |
273 | CvPADLIST (cp) = 0; |
254 | SvREFCNT_dec (cp); |
274 | SvREFCNT_dec (cp); |
… | |
… | |
281 | } |
301 | } |
282 | |
302 | |
283 | #define SB do { |
303 | #define SB do { |
284 | #define SE } while (0) |
304 | #define SE } while (0) |
285 | |
305 | |
286 | #define LOAD(state) load_state ((state)) |
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287 | #define SAVE(state,flags) save_state ((state),(flags)) |
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288 | |
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289 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
306 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
290 | |
307 | |
291 | static void |
308 | static void |
292 | load_state (Coro__State c) |
309 | load_perl (Coro__State c) |
293 | { |
310 | { |
294 | #define VAR(name,type) PL_ ## name = c->name; |
311 | #define VAR(name,type) PL_ ## name = c->name; |
295 | # include "state.h" |
312 | # include "state.h" |
296 | #undef VAR |
313 | #undef VAR |
297 | |
314 | |
298 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
315 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
299 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
316 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
300 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
317 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
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318 | if (c->irssv) |
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319 | { |
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320 | if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv)) |
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321 | SvREFCNT_dec (c->irssv); |
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322 | else |
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323 | { |
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324 | REPLACE_SV (PL_rs, c->irssv); |
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325 | if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0); |
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326 | sv_setsv (c->irssv_sv, PL_rs); |
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327 | } |
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328 | } |
301 | |
329 | |
302 | { |
330 | { |
303 | dSP; |
331 | dSP; |
304 | CV *cv; |
332 | CV *cv; |
305 | |
333 | |
… | |
… | |
314 | PUTBACK; |
342 | PUTBACK; |
315 | } |
343 | } |
316 | } |
344 | } |
317 | |
345 | |
318 | static void |
346 | static void |
319 | save_state (Coro__State c, int flags) |
347 | save_perl (Coro__State c) |
320 | { |
348 | { |
321 | { |
349 | { |
322 | dSP; |
350 | dSP; |
323 | I32 cxix = cxstack_ix; |
351 | I32 cxix = cxstack_ix; |
324 | PERL_CONTEXT *ccstk = cxstack; |
352 | PERL_CONTEXT *ccstk = cxstack; |
… | |
… | |
327 | /* |
355 | /* |
328 | * the worst thing you can imagine happens first - we have to save |
356 | * the worst thing you can imagine happens first - we have to save |
329 | * (and reinitialize) all cv's in the whole callchain :( |
357 | * (and reinitialize) all cv's in the whole callchain :( |
330 | */ |
358 | */ |
331 | |
359 | |
|
|
360 | EXTEND (SP, 3 + 1); |
332 | PUSHs (Nullsv); |
361 | PUSHs (Nullsv); |
333 | /* this loop was inspired by pp_caller */ |
362 | /* this loop was inspired by pp_caller */ |
334 | for (;;) |
363 | for (;;) |
335 | { |
364 | { |
336 | while (cxix >= 0) |
365 | while (cxix >= 0) |
… | |
… | |
342 | CV *cv = cx->blk_sub.cv; |
371 | CV *cv = cx->blk_sub.cv; |
343 | |
372 | |
344 | if (CvDEPTH (cv)) |
373 | if (CvDEPTH (cv)) |
345 | { |
374 | { |
346 | EXTEND (SP, 3); |
375 | EXTEND (SP, 3); |
347 | |
|
|
348 | PUSHs ((SV *)CvPADLIST (cv)); |
376 | PUSHs ((SV *)CvPADLIST (cv)); |
349 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
377 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
350 | PUSHs ((SV *)cv); |
378 | PUSHs ((SV *)cv); |
351 | |
379 | |
352 | CvDEPTH (cv) = 0; |
380 | CvDEPTH (cv) = 0; |
353 | get_padlist (cv); |
381 | get_padlist (cv); |
354 | } |
382 | } |
355 | } |
383 | } |
356 | #ifdef CXt_FORMAT |
|
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357 | else if (CxTYPE (cx) == CXt_FORMAT) |
|
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358 | { |
|
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359 | /* I never used formats, so how should I know how these are implemented? */ |
|
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360 | /* my bold guess is as a simple, plain sub... */ |
|
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361 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
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362 | } |
|
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363 | #endif |
|
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364 | } |
384 | } |
365 | |
385 | |
366 | if (top_si->si_type == PERLSI_MAIN) |
386 | if (top_si->si_type == PERLSI_MAIN) |
367 | break; |
387 | break; |
368 | |
388 | |
… | |
… | |
372 | } |
392 | } |
373 | |
393 | |
374 | PUTBACK; |
394 | PUTBACK; |
375 | } |
395 | } |
376 | |
396 | |
377 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
397 | c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
378 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
398 | c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
379 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
399 | c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
|
|
400 | c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; |
380 | |
401 | |
381 | #define VAR(name,type)c->name = PL_ ## name; |
402 | #define VAR(name,type)c->name = PL_ ## name; |
382 | # include "state.h" |
403 | # include "state.h" |
383 | #undef VAR |
404 | #undef VAR |
384 | } |
405 | } |
… | |
… | |
387 | * allocate various perl stacks. This is an exact copy |
408 | * allocate various perl stacks. This is an exact copy |
388 | * of perl.c:init_stacks, except that it uses less memory |
409 | * of perl.c:init_stacks, except that it uses less memory |
389 | * on the (sometimes correct) assumption that coroutines do |
410 | * on the (sometimes correct) assumption that coroutines do |
390 | * not usually need a lot of stackspace. |
411 | * not usually need a lot of stackspace. |
391 | */ |
412 | */ |
|
|
413 | #if PREFER_PERL_FUNCTIONS |
|
|
414 | # define coro_init_stacks init_stacks |
|
|
415 | #else |
392 | static void |
416 | static void |
393 | coro_init_stacks () |
417 | coro_init_stacks () |
394 | { |
418 | { |
395 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
419 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
396 | PL_curstackinfo->si_type = PERLSI_MAIN; |
420 | PL_curstackinfo->si_type = PERLSI_MAIN; |
… | |
… | |
426 | New(54,PL_retstack,16,OP*); |
450 | New(54,PL_retstack,16,OP*); |
427 | PL_retstack_ix = 0; |
451 | PL_retstack_ix = 0; |
428 | PL_retstack_max = 16; |
452 | PL_retstack_max = 16; |
429 | #endif |
453 | #endif |
430 | } |
454 | } |
|
|
455 | #endif |
431 | |
456 | |
432 | /* |
457 | /* |
433 | * destroy the stacks, the callchain etc... |
458 | * destroy the stacks, the callchain etc... |
434 | */ |
459 | */ |
435 | static void |
460 | static void |
436 | coro_destroy_stacks () |
461 | coro_destroy_stacks () |
437 | { |
462 | { |
438 | if (!IN_DESTRUCT) |
463 | if (!IN_DESTRUCT) |
439 | { |
464 | { |
440 | /* is this ugly, I ask? */ |
465 | /* restore all saved variables and stuff */ |
441 | LEAVE_SCOPE (0); |
466 | LEAVE_SCOPE (0); |
|
|
467 | assert (PL_tmps_floor == -1); |
442 | |
468 | |
443 | /* sure it is, but more important: is it correct?? :/ */ |
469 | /* free all temporaries */ |
444 | FREETMPS; |
470 | FREETMPS; |
|
|
471 | assert (PL_tmps_ix == -1); |
445 | |
472 | |
446 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
473 | POPSTACK_TO (PL_mainstack); |
447 | } |
474 | } |
448 | |
475 | |
449 | while (PL_curstackinfo->si_next) |
476 | while (PL_curstackinfo->si_next) |
450 | PL_curstackinfo = PL_curstackinfo->si_next; |
477 | PL_curstackinfo = PL_curstackinfo->si_next; |
451 | |
478 | |
452 | while (PL_curstackinfo) |
479 | while (PL_curstackinfo) |
453 | { |
480 | { |
454 | PERL_SI *p = PL_curstackinfo->si_prev; |
481 | PERL_SI *p = PL_curstackinfo->si_prev; |
455 | |
482 | |
456 | { /*D*//*remove*/ |
|
|
457 | dSP; |
|
|
458 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
459 | PUTBACK; /* possibly superfluous */ |
|
|
460 | } |
|
|
461 | |
|
|
462 | if (!IN_DESTRUCT) |
483 | if (!IN_DESTRUCT) |
463 | { |
|
|
464 | dounwind (-1);/*D*//*remove*/ |
|
|
465 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
484 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
466 | } |
|
|
467 | |
485 | |
468 | Safefree (PL_curstackinfo->si_cxstack); |
486 | Safefree (PL_curstackinfo->si_cxstack); |
469 | Safefree (PL_curstackinfo); |
487 | Safefree (PL_curstackinfo); |
470 | PL_curstackinfo = p; |
488 | PL_curstackinfo = p; |
471 | } |
489 | } |
… | |
… | |
497 | |
515 | |
498 | { |
516 | { |
499 | dSP; |
517 | dSP; |
500 | LOGOP myop; |
518 | LOGOP myop; |
501 | |
519 | |
502 | /* I have no idea why this is needed, but it is */ |
|
|
503 | PUSHMARK (SP); |
|
|
504 | |
|
|
505 | SvREFCNT_dec (GvAV (PL_defgv)); |
520 | SvREFCNT_dec (GvAV (PL_defgv)); |
506 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
521 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
507 | |
522 | |
508 | Zero (&myop, 1, LOGOP); |
523 | Zero (&myop, 1, LOGOP); |
509 | myop.op_next = Nullop; |
524 | myop.op_next = Nullop; |
510 | myop.op_flags = OPf_WANT_VOID; |
525 | myop.op_flags = OPf_WANT_VOID; |
511 | |
526 | |
512 | PL_op = (OP *)&myop; |
|
|
513 | |
|
|
514 | PUSHMARK (SP); |
527 | PUSHMARK (SP); |
515 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
528 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
516 | PUTBACK; |
529 | PUTBACK; |
|
|
530 | PL_op = (OP *)&myop; |
517 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
531 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
518 | SPAGAIN; |
532 | SPAGAIN; |
519 | } |
533 | } |
520 | |
534 | |
521 | ENTER; /* necessary e.g. for dounwind */ |
535 | ENTER; /* necessary e.g. for dounwind */ |
… | |
… | |
529 | SvREFCNT_dec (coro_mortal); |
543 | SvREFCNT_dec (coro_mortal); |
530 | coro_mortal = 0; |
544 | coro_mortal = 0; |
531 | } |
545 | } |
532 | } |
546 | } |
533 | |
547 | |
|
|
548 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
534 | static void NOINLINE |
549 | static void NOINLINE |
535 | prepare_cctx (coro_cctx *cctx) |
550 | prepare_cctx (coro_cctx *cctx) |
536 | { |
551 | { |
537 | dSP; |
552 | dSP; |
538 | LOGOP myop; |
553 | LOGOP myop; |
539 | |
554 | |
540 | Zero (&myop, 1, LOGOP); |
555 | Zero (&myop, 1, LOGOP); |
541 | myop.op_next = PL_op; |
556 | myop.op_next = PL_op; |
542 | myop.op_flags = OPf_WANT_VOID; |
557 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
543 | |
|
|
544 | sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx)); |
|
|
545 | |
558 | |
546 | PUSHMARK (SP); |
559 | PUSHMARK (SP); |
|
|
560 | EXTEND (SP, 2); |
|
|
561 | PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
547 | XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
562 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
548 | PUTBACK; |
563 | PUTBACK; |
|
|
564 | PL_op = (OP *)&myop; |
549 | PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); |
565 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
550 | SPAGAIN; |
566 | SPAGAIN; |
551 | } |
567 | } |
552 | |
568 | |
553 | static void |
569 | static void |
554 | coro_run (void *arg) |
570 | coro_run (void *arg) |
555 | { |
571 | { |
556 | /* coro_run is the alternative epilogue of transfer() */ |
572 | /* coro_run is the alternative tail of transfer(), so unlock here. */ |
557 | UNLOCK; |
573 | UNLOCK; |
558 | |
574 | |
559 | /* |
575 | /* |
560 | * this is a _very_ stripped down perl interpreter ;) |
576 | * this is a _very_ stripped down perl interpreter ;) |
561 | */ |
577 | */ |
… | |
… | |
563 | |
579 | |
564 | /* inject call to cctx_init */ |
580 | /* inject call to cctx_init */ |
565 | prepare_cctx ((coro_cctx *)arg); |
581 | prepare_cctx ((coro_cctx *)arg); |
566 | |
582 | |
567 | /* somebody will hit me for both perl_run and PL_restartop */ |
583 | /* somebody will hit me for both perl_run and PL_restartop */ |
|
|
584 | PL_restartop = PL_op; |
568 | perl_run (PL_curinterp); |
585 | perl_run (PL_curinterp); |
569 | |
586 | |
570 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
587 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
571 | abort (); |
588 | abort (); |
572 | } |
589 | } |
… | |
… | |
576 | { |
593 | { |
577 | coro_cctx *cctx; |
594 | coro_cctx *cctx; |
578 | |
595 | |
579 | ++cctx_count; |
596 | ++cctx_count; |
580 | |
597 | |
581 | New (0, cctx, 1, coro_cctx); |
598 | Newz (0, cctx, 1, coro_cctx); |
582 | |
599 | |
583 | #if HAVE_MMAP |
600 | #if HAVE_MMAP |
584 | |
601 | |
585 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
602 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
586 | /* mmap suppsedly does allocate-on-write for us */ |
603 | /* mmap supposedly does allocate-on-write for us */ |
587 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
604 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
588 | |
605 | |
589 | if (cctx->sptr == (void *)-1) |
606 | if (cctx->sptr == (void *)-1) |
590 | { |
607 | { |
591 | perror ("FATAL: unable to mmap stack for coroutine"); |
608 | perror ("FATAL: unable to mmap stack for coroutine"); |
… | |
… | |
681 | cctx_first = cctx; |
698 | cctx_first = cctx; |
682 | } |
699 | } |
683 | |
700 | |
684 | /* never call directly, always through the coro_state_transfer global variable */ |
701 | /* never call directly, always through the coro_state_transfer global variable */ |
685 | static void NOINLINE |
702 | static void NOINLINE |
686 | transfer (struct coro *prev, struct coro *next, int flags) |
703 | transfer (struct coro *prev, struct coro *next) |
687 | { |
704 | { |
688 | dSTACKLEVEL; |
705 | dSTACKLEVEL; |
689 | |
706 | |
690 | /* sometimes transfer is only called to set idle_sp */ |
707 | /* sometimes transfer is only called to set idle_sp */ |
691 | if (flags == TRANSFER_SET_STACKLEVEL) |
708 | if (!next) |
|
|
709 | { |
692 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
710 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
711 | assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */ |
|
|
712 | } |
693 | else if (prev != next) |
713 | else if (prev != next) |
694 | { |
714 | { |
695 | coro_cctx *prev__cctx; |
715 | coro_cctx *prev__cctx; |
696 | |
716 | |
697 | if (prev->flags & CF_NEW) |
717 | if (prev->flags & CF_NEW) |
… | |
… | |
718 | if (next->flags & CF_NEW) |
738 | if (next->flags & CF_NEW) |
719 | { |
739 | { |
720 | /* need to start coroutine */ |
740 | /* need to start coroutine */ |
721 | next->flags &= ~CF_NEW; |
741 | next->flags &= ~CF_NEW; |
722 | /* first get rid of the old state */ |
742 | /* first get rid of the old state */ |
723 | SAVE (prev, -1); |
743 | save_perl (prev); |
724 | /* setup coroutine call */ |
744 | /* setup coroutine call */ |
725 | setup_coro (next); |
745 | setup_coro (next); |
726 | /* need a new stack */ |
746 | /* need a new stack */ |
727 | assert (!next->stack); |
747 | assert (!next->cctx); |
728 | } |
748 | } |
729 | else |
749 | else |
730 | { |
750 | { |
731 | /* coroutine already started */ |
751 | /* coroutine already started */ |
732 | SAVE (prev, flags); |
752 | save_perl (prev); |
733 | LOAD (next); |
753 | load_perl (next); |
734 | } |
754 | } |
735 | |
755 | |
736 | prev__cctx = prev->cctx; |
756 | prev__cctx = prev->cctx; |
737 | |
757 | |
738 | /* possibly "free" the cctx */ |
758 | /* possibly "free" the cctx */ |
… | |
… | |
768 | } |
788 | } |
769 | |
789 | |
770 | struct transfer_args |
790 | struct transfer_args |
771 | { |
791 | { |
772 | struct coro *prev, *next; |
792 | struct coro *prev, *next; |
773 | int flags; |
|
|
774 | }; |
793 | }; |
775 | |
794 | |
776 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) |
795 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next) |
777 | |
796 | |
778 | static void |
797 | static void |
779 | coro_state_destroy (struct coro *coro) |
798 | coro_state_destroy (struct coro *coro) |
780 | { |
799 | { |
781 | if (coro->refcnt--) |
800 | if (coro->refcnt--) |
782 | return; |
801 | return; |
783 | |
802 | |
784 | if (coro->mainstack && coro->mainstack != main_mainstack) |
803 | if (coro->mainstack && coro->mainstack != main_mainstack) |
785 | { |
804 | { |
786 | struct coro temp; |
805 | struct coro temp; |
|
|
806 | Zero (&temp, 1, struct coro); |
|
|
807 | temp.save = CORO_SAVE_ALL; |
787 | |
808 | |
788 | if (coro->flags & CF_RUNNING) |
809 | if (coro->flags & CF_RUNNING) |
789 | croak ("FATAL: tried to destroy currently running coroutine"); |
810 | croak ("FATAL: tried to destroy currently running coroutine"); |
790 | |
811 | |
791 | SAVE ((&temp), TRANSFER_SAVE_ALL); |
812 | save_perl (&temp); |
792 | LOAD (coro); |
813 | load_perl (coro); |
793 | |
814 | |
794 | coro_destroy_stacks (); |
815 | coro_destroy_stacks (); |
795 | |
816 | |
796 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
817 | load_perl (&temp); /* this will get rid of defsv etc.. */ |
797 | |
818 | |
798 | coro->mainstack = 0; |
819 | coro->mainstack = 0; |
799 | } |
820 | } |
800 | |
821 | |
801 | cctx_destroy (coro->cctx); |
822 | cctx_destroy (coro->cctx); |
… | |
… | |
856 | assert (mg->mg_type == PERL_MAGIC_ext); |
877 | assert (mg->mg_type == PERL_MAGIC_ext); |
857 | return (struct coro *)mg->mg_ptr; |
878 | return (struct coro *)mg->mg_ptr; |
858 | } |
879 | } |
859 | |
880 | |
860 | static void |
881 | static void |
861 | prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
882 | prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
862 | { |
883 | { |
863 | ta->prev = SvSTATE (prev); |
884 | ta->prev = SvSTATE (prev_sv); |
864 | ta->next = SvSTATE (next); |
885 | ta->next = SvSTATE (next_sv); |
865 | ta->flags = flags; |
|
|
866 | } |
886 | } |
867 | |
887 | |
868 | static void |
888 | static void |
869 | api_transfer (SV *prev, SV *next, int flags) |
889 | api_transfer (SV *prev_sv, SV *next_sv) |
870 | { |
890 | { |
871 | struct transfer_args ta; |
891 | struct transfer_args ta; |
872 | |
892 | |
873 | prepare_transfer (&ta, prev, next, flags); |
893 | prepare_transfer (&ta, prev_sv, next_sv); |
874 | TRANSFER (ta); |
894 | TRANSFER (ta); |
|
|
895 | } |
|
|
896 | |
|
|
897 | static int |
|
|
898 | api_save (SV *coro_sv, int new_save) |
|
|
899 | { |
|
|
900 | struct coro *coro = SvSTATE (coro_sv); |
|
|
901 | int old_save = coro->save; |
|
|
902 | |
|
|
903 | if (new_save >= 0) |
|
|
904 | coro->save = new_save; |
|
|
905 | |
|
|
906 | return old_save; |
875 | } |
907 | } |
876 | |
908 | |
877 | /** Coro ********************************************************************/ |
909 | /** Coro ********************************************************************/ |
878 | |
910 | |
879 | #define PRIO_MAX 3 |
911 | #define PRIO_MAX 3 |
… | |
… | |
925 | coro = SvSTATE (coro_sv); |
957 | coro = SvSTATE (coro_sv); |
926 | |
958 | |
927 | if (coro->flags & CF_READY) |
959 | if (coro->flags & CF_READY) |
928 | return 0; |
960 | return 0; |
929 | |
961 | |
930 | #if 0 /* this is actually harmless */ |
|
|
931 | if (coro->flags & CF_RUNNING) |
|
|
932 | croak ("Coro::ready called on currently running coroutine"); |
|
|
933 | #endif |
|
|
934 | |
|
|
935 | coro->flags |= CF_READY; |
962 | coro->flags |= CF_READY; |
936 | |
963 | |
937 | LOCK; |
964 | LOCK; |
938 | coro_enq (SvREFCNT_inc (coro_sv)); |
965 | coro_enq (SvREFCNT_inc (coro_sv)); |
939 | UNLOCK; |
966 | UNLOCK; |
… | |
… | |
942 | } |
969 | } |
943 | |
970 | |
944 | static int |
971 | static int |
945 | api_is_ready (SV *coro_sv) |
972 | api_is_ready (SV *coro_sv) |
946 | { |
973 | { |
947 | return !!SvSTATE (coro_sv)->flags & CF_READY; |
974 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
948 | } |
975 | } |
949 | |
976 | |
950 | static void |
977 | static void |
951 | prepare_schedule (struct transfer_args *ta) |
978 | prepare_schedule (struct transfer_args *ta) |
952 | { |
979 | { |
… | |
… | |
988 | assert (!SvROK(prev));//D |
1015 | assert (!SvROK(prev));//D |
989 | assert (!SvROK(next));//D |
1016 | assert (!SvROK(next));//D |
990 | |
1017 | |
991 | ta->prev = SvSTATE (prev); |
1018 | ta->prev = SvSTATE (prev); |
992 | ta->next = SvSTATE (next); |
1019 | ta->next = SvSTATE (next); |
993 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
994 | |
1020 | |
995 | assert (ta->flags & CF_READY); |
1021 | assert (ta->next->flags & CF_READY); |
996 | ta->next->flags &= ~CF_READY; |
1022 | ta->next->flags &= ~CF_READY; |
997 | } |
1023 | } |
998 | |
1024 | |
999 | static void |
1025 | static void |
1000 | prepare_cede (struct transfer_args *ta) |
1026 | prepare_cede (struct transfer_args *ta) |
… | |
… | |
1033 | #endif |
1059 | #endif |
1034 | BOOT_PAGESIZE; |
1060 | BOOT_PAGESIZE; |
1035 | |
1061 | |
1036 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1062 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1037 | |
1063 | |
1038 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1064 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); |
1039 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1065 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); |
1040 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1066 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV)); |
|
|
1067 | newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV)); |
|
|
1068 | newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); |
1041 | |
1069 | |
1042 | main_mainstack = PL_mainstack; |
1070 | main_mainstack = PL_mainstack; |
1043 | |
1071 | |
1044 | coroapi.ver = CORO_API_VERSION; |
1072 | coroapi.ver = CORO_API_VERSION; |
1045 | coroapi.transfer = api_transfer; |
1073 | coroapi.transfer = api_transfer; |
… | |
… | |
1055 | HV *hv; |
1083 | HV *hv; |
1056 | int i; |
1084 | int i; |
1057 | |
1085 | |
1058 | Newz (0, coro, 1, struct coro); |
1086 | Newz (0, coro, 1, struct coro); |
1059 | coro->args = newAV (); |
1087 | coro->args = newAV (); |
|
|
1088 | coro->save = CORO_SAVE_ALL; |
1060 | coro->flags = CF_NEW; |
1089 | coro->flags = CF_NEW; |
1061 | |
1090 | |
1062 | hv = newHV (); |
1091 | hv = newHV (); |
1063 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1092 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1064 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1093 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1065 | |
1094 | |
1066 | for (i = 1; i < items; i++) |
1095 | for (i = 1; i < items; i++) |
1067 | av_push (coro->args, newSVsv (ST (i))); |
1096 | av_push (coro->args, newSVsv (ST (i))); |
1068 | } |
1097 | } |
1069 | OUTPUT: |
1098 | OUTPUT: |
|
|
1099 | RETVAL |
|
|
1100 | |
|
|
1101 | int |
|
|
1102 | save (SV *coro, int new_save = -1) |
|
|
1103 | CODE: |
|
|
1104 | RETVAL = api_save (coro, new_save); |
|
|
1105 | OUTPUT: |
1070 | RETVAL |
1106 | RETVAL |
1071 | |
1107 | |
1072 | void |
1108 | void |
1073 | _set_stacklevel (...) |
1109 | _set_stacklevel (...) |
1074 | ALIAS: |
1110 | ALIAS: |
… | |
… | |
1082 | switch (ix) |
1118 | switch (ix) |
1083 | { |
1119 | { |
1084 | case 0: |
1120 | case 0: |
1085 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1121 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1086 | ta.next = 0; |
1122 | ta.next = 0; |
1087 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1088 | break; |
1123 | break; |
1089 | |
1124 | |
1090 | case 1: |
1125 | case 1: |
1091 | if (items != 3) |
1126 | if (items != 2) |
1092 | croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items); |
1127 | croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
1093 | |
1128 | |
1094 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
1129 | prepare_transfer (&ta, ST (0), ST (1)); |
1095 | break; |
1130 | break; |
1096 | |
1131 | |
1097 | case 2: |
1132 | case 2: |
1098 | prepare_schedule (&ta); |
1133 | prepare_schedule (&ta); |
1099 | break; |
1134 | break; |
… | |
… | |
1162 | |
1197 | |
1163 | { |
1198 | { |
1164 | SV *sv = perl_get_sv("Coro::API", 1); |
1199 | SV *sv = perl_get_sv("Coro::API", 1); |
1165 | |
1200 | |
1166 | coroapi.schedule = api_schedule; |
1201 | coroapi.schedule = api_schedule; |
|
|
1202 | coroapi.save = api_save; |
1167 | coroapi.cede = api_cede; |
1203 | coroapi.cede = api_cede; |
1168 | coroapi.ready = api_ready; |
1204 | coroapi.ready = api_ready; |
1169 | coroapi.is_ready = api_is_ready; |
1205 | coroapi.is_ready = api_is_ready; |
1170 | coroapi.nready = &coro_nready; |
1206 | coroapi.nready = &coro_nready; |
1171 | coroapi.current = coro_current; |
1207 | coroapi.current = coro_current; |
… | |
… | |
1174 | sv_setiv (sv, (IV)&coroapi); |
1210 | sv_setiv (sv, (IV)&coroapi); |
1175 | SvREADONLY_on (sv); |
1211 | SvREADONLY_on (sv); |
1176 | } |
1212 | } |
1177 | } |
1213 | } |
1178 | |
1214 | |
|
|
1215 | void |
|
|
1216 | _set_current (SV *current) |
|
|
1217 | PROTOTYPE: $ |
|
|
1218 | CODE: |
|
|
1219 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
1220 | SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
|
|
1221 | |
1179 | int |
1222 | int |
1180 | prio (Coro::State coro, int newprio = 0) |
1223 | prio (Coro::State coro, int newprio = 0) |
1181 | ALIAS: |
1224 | ALIAS: |
1182 | nice = 1 |
1225 | nice = 1 |
1183 | CODE: |
1226 | CODE: |
… | |
… | |
1185 | RETVAL = coro->prio; |
1228 | RETVAL = coro->prio; |
1186 | |
1229 | |
1187 | if (items > 1) |
1230 | if (items > 1) |
1188 | { |
1231 | { |
1189 | if (ix) |
1232 | if (ix) |
1190 | newprio += coro->prio; |
1233 | newprio = coro->prio - newprio; |
1191 | |
1234 | |
1192 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1235 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1193 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1236 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1194 | |
1237 | |
1195 | coro->prio = newprio; |
1238 | coro->prio = newprio; |
1196 | } |
1239 | } |
1197 | } |
1240 | } |
|
|
1241 | OUTPUT: |
|
|
1242 | RETVAL |
1198 | |
1243 | |
1199 | SV * |
1244 | SV * |
1200 | ready (SV *self) |
1245 | ready (SV *self) |
1201 | PROTOTYPE: $ |
1246 | PROTOTYPE: $ |
1202 | CODE: |
1247 | CODE: |
… | |
… | |
1218 | CODE: |
1263 | CODE: |
1219 | RETVAL = coro_nready; |
1264 | RETVAL = coro_nready; |
1220 | OUTPUT: |
1265 | OUTPUT: |
1221 | RETVAL |
1266 | RETVAL |
1222 | |
1267 | |
1223 | void |
|
|
1224 | _set_current (SV *current) |
|
|
1225 | PROTOTYPE: $ |
|
|
1226 | CODE: |
|
|
1227 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
1228 | SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
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|
1229 | |
|
|
1230 | MODULE = Coro::State PACKAGE = Coro::AIO |
1268 | MODULE = Coro::State PACKAGE = Coro::AIO |
1231 | |
1269 | |
1232 | SV * |
1270 | SV * |
1233 | _get_state () |
1271 | _get_state () |
1234 | CODE: |
1272 | CODE: |
1235 | { |
1273 | { |
1236 | struct { |
1274 | struct io_state *data; |
1237 | int errorno; |
|
|
1238 | int laststype; |
|
|
1239 | int laststatval; |
|
|
1240 | Stat_t statcache; |
|
|
1241 | } data; |
|
|
1242 | |
1275 | |
|
|
1276 | RETVAL = newSV (sizeof (struct io_state)); |
|
|
1277 | data = (struct io_state *)SvPVX (RETVAL); |
|
|
1278 | SvCUR_set (RETVAL, sizeof (struct io_state)); |
|
|
1279 | SvPOK_only (RETVAL); |
|
|
1280 | |
1243 | data.errorno = errno; |
1281 | data->errorno = errno; |
1244 | data.laststype = PL_laststype; |
1282 | data->laststype = PL_laststype; |
1245 | data.laststatval = PL_laststatval; |
1283 | data->laststatval = PL_laststatval; |
1246 | data.statcache = PL_statcache; |
1284 | data->statcache = PL_statcache; |
1247 | |
|
|
1248 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1249 | } |
1285 | } |
1250 | OUTPUT: |
1286 | OUTPUT: |
1251 | RETVAL |
1287 | RETVAL |
1252 | |
1288 | |
1253 | void |
1289 | void |
1254 | _set_state (char *data_) |
1290 | _set_state (char *data_) |
1255 | PROTOTYPE: $ |
1291 | PROTOTYPE: $ |
1256 | CODE: |
1292 | CODE: |
1257 | { |
1293 | { |
1258 | struct { |
1294 | struct io_state *data = (void *)data_; |
1259 | int errorno; |
|
|
1260 | int laststype; |
|
|
1261 | int laststatval; |
|
|
1262 | Stat_t statcache; |
|
|
1263 | } *data = (void *)data_; |
|
|
1264 | |
1295 | |
1265 | errno = data->errorno; |
1296 | errno = data->errorno; |
1266 | PL_laststype = data->laststype; |
1297 | PL_laststype = data->laststype; |
1267 | PL_laststatval = data->laststatval; |
1298 | PL_laststatval = data->laststatval; |
1268 | PL_statcache = data->statcache; |
1299 | PL_statcache = data->statcache; |
1269 | } |
1300 | } |
|
|
1301 | |