1 | #include "EXTERN.h" |
1 | #include "EXTERN.h" |
2 | #include "perl.h" |
2 | #include "perl.h" |
3 | #include "XSUB.h" |
3 | #include "XSUB.h" |
4 | |
4 | |
5 | #if 1 |
5 | #include "patchlevel.h" |
6 | # define CHK(x) (void *)0 |
6 | |
7 | #else |
7 | #if PATCHLEVEL < 6 |
8 | # define CHK(x) if (!(x)) croak("FATAL, CHK: " #x) |
8 | # ifndef PL_ppaddr |
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9 | # define PL_ppaddr ppaddr |
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10 | # endif |
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11 | # ifndef call_sv |
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12 | # define call_sv perl_call_sv |
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13 | # endif |
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14 | # ifndef get_sv |
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15 | # define get_sv perl_get_sv |
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16 | # endif |
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17 | # ifndef get_cv |
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18 | # define get_cv perl_get_cv |
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19 | # endif |
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20 | # ifndef IS_PADGV |
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21 | # define IS_PADGV(v) 0 |
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22 | # endif |
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23 | # ifndef IS_PADCONST |
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24 | # define IS_PADCONST(v) 0 |
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25 | # endif |
9 | #endif |
26 | #endif |
10 | |
27 | |
11 | #define MAY_FLUSH /* increases codesize */ |
28 | #include "libcoro/coro.c" |
12 | |
29 | |
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30 | #include <signal.h> |
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31 | |
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32 | #ifdef HAVE_MMAP |
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33 | # include <unistd.h> |
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34 | # include <sys/mman.h> |
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35 | # ifndef MAP_ANONYMOUS |
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36 | # ifdef MAP_ANON |
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37 | # define MAP_ANONYMOUS MAP_ANON |
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38 | # else |
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39 | # undef HAVE_MMAP |
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40 | # endif |
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41 | # endif |
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42 | #endif |
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43 | |
13 | #define SUB_INIT "Coro::State::coroutine_initialization" |
44 | #define SUB_INIT "Coro::State::initialize" |
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45 | #define UCORO_STATE "_coro_state" |
14 | |
46 | |
15 | #define SAVE_DEFAV 0x00000001 |
47 | /* The next macro should declare a variable stacklevel that contains and approximation |
16 | #define SAVE_DEFSV 0x00000002 |
48 | * to the current C stack pointer. Its property is that it changes with each call |
17 | #define SAVE_ERRSV 0x00000004 |
49 | * and should be unique. */ |
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50 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
18 | |
51 | |
19 | #define SAVE_ALL -1 |
52 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
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53 | |
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54 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
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55 | |
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56 | #include "CoroAPI.h" |
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57 | |
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58 | static struct CoroAPI coroapi; |
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59 | |
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60 | /* this is actually not only the c stack but also c registers etc... */ |
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61 | typedef struct { |
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62 | int refcnt; /* pointer reference counter */ |
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63 | int usecnt; /* shared by how many coroutines */ |
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64 | int gencnt; /* generation counter */ |
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65 | |
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66 | coro_context cctx; |
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67 | |
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68 | void *sptr; |
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69 | long ssize; /* positive == mmap, otherwise malloc */ |
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70 | } coro_stack; |
20 | |
71 | |
21 | struct coro { |
72 | struct coro { |
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73 | /* the top-level JMPENV for each coroutine, needed to catch dies. */ |
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74 | JMPENV start_env; |
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75 | |
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76 | /* the optional C context */ |
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77 | coro_stack *stack; |
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78 | void *cursp; |
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79 | int gencnt; |
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80 | |
22 | /* optionally saved, might be zero */ |
81 | /* optionally saved, might be zero */ |
23 | AV *defav; |
82 | AV *defav; |
24 | SV *defsv; |
83 | SV *defsv; |
25 | SV *errsv; |
84 | SV *errsv; |
26 | |
85 | |
27 | /* saved global state not related to stacks */ |
86 | /* saved global state not related to stacks */ |
28 | U8 dowarn; |
87 | U8 dowarn; |
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88 | I32 in_eval; |
29 | |
89 | |
30 | /* the stacks and related info (callchain etc..) */ |
90 | /* the stacks and related info (callchain etc..) */ |
31 | PERL_SI *curstackinfo; |
91 | PERL_SI *curstackinfo; |
32 | AV *curstack; |
92 | AV *curstack; |
33 | AV *mainstack; |
93 | AV *mainstack; |
34 | SV **stack_sp; |
94 | SV **stack_sp; |
35 | OP *op; |
95 | OP *op; |
36 | SV **curpad; |
96 | SV **curpad; |
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97 | AV *comppad; |
37 | SV **stack_base; |
98 | SV **stack_base; |
38 | SV **stack_max; |
99 | SV **stack_max; |
39 | SV **tmps_stack; |
100 | SV **tmps_stack; |
40 | I32 tmps_floor; |
101 | I32 tmps_floor; |
41 | I32 tmps_ix; |
102 | I32 tmps_ix; |
… | |
… | |
51 | I32 savestack_max; |
112 | I32 savestack_max; |
52 | OP **retstack; |
113 | OP **retstack; |
53 | I32 retstack_ix; |
114 | I32 retstack_ix; |
54 | I32 retstack_max; |
115 | I32 retstack_max; |
55 | COP *curcop; |
116 | COP *curcop; |
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117 | JMPENV *top_env; |
56 | |
118 | |
57 | /* data associated with this coroutine (initial args) */ |
119 | /* data associated with this coroutine (initial args) */ |
58 | AV *args; |
120 | AV *args; |
59 | }; |
121 | }; |
60 | |
122 | |
61 | typedef struct coro *Coro__State; |
123 | typedef struct coro *Coro__State; |
62 | typedef struct coro *Coro__State_or_hashref; |
124 | typedef struct coro *Coro__State_or_hashref; |
63 | |
125 | |
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126 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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127 | static HV *coro_state_stash; |
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128 | static SV *ucoro_state_sv; |
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129 | static U32 ucoro_state_hash; |
64 | static HV *padlist_cache; |
130 | static HV *padlist_cache; |
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131 | static SV *coro_mortal; /* will be freed after next transfer */ |
65 | |
132 | |
66 | /* mostly copied from op.c:cv_clone2 */ |
133 | /* mostly copied from op.c:cv_clone2 */ |
67 | STATIC AV * |
134 | STATIC AV * |
68 | clone_padlist (AV *protopadlist) |
135 | clone_padlist (AV *protopadlist) |
69 | { |
136 | { |
… | |
… | |
115 | sv = (SV *) newAV (); |
182 | sv = (SV *) newAV (); |
116 | else if (*name == '%') |
183 | else if (*name == '%') |
117 | sv = (SV *) newHV (); |
184 | sv = (SV *) newHV (); |
118 | else |
185 | else |
119 | sv = NEWSV (0, 0); |
186 | sv = NEWSV (0, 0); |
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187 | #ifdef SvPADBUSY |
120 | if (!SvPADBUSY (sv)) |
188 | if (!SvPADBUSY (sv)) |
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189 | #endif |
121 | SvPADMY_on (sv); |
190 | SvPADMY_on (sv); |
122 | npad[ix] = sv; |
191 | npad[ix] = sv; |
123 | } |
192 | } |
124 | } |
193 | } |
125 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
194 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
… | |
… | |
155 | #endif |
224 | #endif |
156 | |
225 | |
157 | return newpadlist; |
226 | return newpadlist; |
158 | } |
227 | } |
159 | |
228 | |
160 | #ifdef MAY_FLUSH |
229 | STATIC void |
161 | STATIC AV * |
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162 | free_padlist (AV *padlist) |
230 | free_padlist (AV *padlist) |
163 | { |
231 | { |
164 | /* may be during global destruction */ |
232 | /* may be during global destruction */ |
165 | if (SvREFCNT(padlist)) |
233 | if (SvREFCNT (padlist)) |
166 | { |
234 | { |
167 | I32 i = AvFILLp(padlist); |
235 | I32 i = AvFILLp (padlist); |
168 | while (i >= 0) |
236 | while (i >= 0) |
169 | { |
237 | { |
170 | SV **svp = av_fetch(padlist, i--, FALSE); |
238 | SV **svp = av_fetch (padlist, i--, FALSE); |
171 | SV *sv = svp ? *svp : Nullsv; |
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172 | if (sv) |
239 | if (svp) |
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240 | { |
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241 | SV *sv; |
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242 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
173 | SvREFCNT_dec(sv); |
243 | SvREFCNT_dec (sv); |
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244 | |
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245 | SvREFCNT_dec (*svp); |
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246 | } |
174 | } |
247 | } |
175 | |
248 | |
176 | SvREFCNT_dec((SV*)padlist); |
249 | SvREFCNT_dec ((SV*)padlist); |
177 | } |
250 | } |
178 | } |
251 | } |
179 | #endif |
252 | |
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253 | STATIC int |
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254 | coro_cv_free (SV *sv, MAGIC *mg) |
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255 | { |
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256 | AV *padlist; |
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257 | AV *av = (AV *)mg->mg_obj; |
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258 | |
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259 | /* casting is fun. */ |
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260 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
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261 | free_padlist (padlist); |
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262 | } |
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263 | |
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264 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
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265 | |
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266 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
180 | |
267 | |
181 | /* the next two functions merely cache the padlists */ |
268 | /* the next two functions merely cache the padlists */ |
182 | STATIC void |
269 | STATIC void |
183 | get_padlist (CV *cv) |
270 | get_padlist (CV *cv) |
184 | { |
271 | { |
185 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
272 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
186 | |
273 | |
187 | if (he && AvFILLp ((AV *)*he) >= 0) |
274 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
188 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
275 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
189 | else |
276 | else |
190 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
277 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
191 | } |
278 | } |
192 | |
279 | |
193 | STATIC void |
280 | STATIC void |
194 | put_padlist (CV *cv) |
281 | put_padlist (CV *cv) |
195 | { |
282 | { |
196 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
283 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
197 | |
284 | |
198 | if (SvTYPE (*he) != SVt_PVAV) |
285 | if (!mg) |
199 | { |
286 | { |
200 | SvREFCNT_dec (*he); |
287 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
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288 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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289 | mg->mg_virtual = &vtbl_coro; |
201 | *he = (SV *)newAV (); |
290 | mg->mg_obj = (SV *)newAV (); |
202 | } |
291 | } |
203 | |
292 | |
204 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
293 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
205 | } |
294 | } |
206 | |
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207 | #ifdef MAY_FLUSH |
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208 | STATIC void |
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209 | flush_padlist_cache () |
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210 | { |
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211 | HV *hv = padlist_cache; |
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212 | padlist_cache = newHV (); |
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213 | |
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214 | if (hv_iterinit (hv)) |
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215 | { |
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216 | HE *he; |
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217 | AV *padlist; |
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218 | |
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219 | while (!!(he = hv_iternext (hv))) |
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220 | { |
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221 | AV *av = (AV *)HeVAL(he); |
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222 | |
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223 | /* casting is fun. */ |
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224 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
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225 | free_padlist (padlist); |
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226 | } |
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227 | } |
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228 | |
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229 | SvREFCNT_dec (hv); |
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230 | } |
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231 | #endif |
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232 | |
295 | |
233 | #define SB do { |
296 | #define SB do { |
234 | #define SE } while (0) |
297 | #define SE } while (0) |
235 | |
298 | |
236 | #define LOAD(state) SB load_state(aTHX_ state); SPAGAIN; SE |
299 | #define LOAD(state) load_state(aTHX_ (state)); |
237 | #define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ state,flags); SE |
300 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
238 | |
301 | |
239 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
302 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
240 | |
303 | |
241 | static void |
304 | static void |
242 | load_state(pTHX_ Coro__State c) |
305 | load_state(pTHX_ Coro__State c) |
243 | { |
306 | { |
244 | PL_dowarn = c->dowarn; |
307 | PL_dowarn = c->dowarn; |
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308 | PL_in_eval = c->in_eval; |
245 | |
309 | |
246 | PL_curstackinfo = c->curstackinfo; |
310 | PL_curstackinfo = c->curstackinfo; |
247 | PL_curstack = c->curstack; |
311 | PL_curstack = c->curstack; |
248 | PL_mainstack = c->mainstack; |
312 | PL_mainstack = c->mainstack; |
249 | PL_stack_sp = c->stack_sp; |
313 | PL_stack_sp = c->stack_sp; |
250 | PL_op = c->op; |
314 | PL_op = c->op; |
251 | PL_curpad = c->curpad; |
315 | PL_curpad = c->curpad; |
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316 | PL_comppad = c->comppad; |
252 | PL_stack_base = c->stack_base; |
317 | PL_stack_base = c->stack_base; |
253 | PL_stack_max = c->stack_max; |
318 | PL_stack_max = c->stack_max; |
254 | PL_tmps_stack = c->tmps_stack; |
319 | PL_tmps_stack = c->tmps_stack; |
255 | PL_tmps_floor = c->tmps_floor; |
320 | PL_tmps_floor = c->tmps_floor; |
256 | PL_tmps_ix = c->tmps_ix; |
321 | PL_tmps_ix = c->tmps_ix; |
… | |
… | |
266 | PL_savestack_max = c->savestack_max; |
331 | PL_savestack_max = c->savestack_max; |
267 | PL_retstack = c->retstack; |
332 | PL_retstack = c->retstack; |
268 | PL_retstack_ix = c->retstack_ix; |
333 | PL_retstack_ix = c->retstack_ix; |
269 | PL_retstack_max = c->retstack_max; |
334 | PL_retstack_max = c->retstack_max; |
270 | PL_curcop = c->curcop; |
335 | PL_curcop = c->curcop; |
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336 | PL_top_env = c->top_env; |
271 | |
337 | |
272 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
338 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
273 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
339 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
274 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
340 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
275 | |
341 | |
… | |
… | |
302 | save_state(pTHX_ Coro__State c, int flags) |
368 | save_state(pTHX_ Coro__State c, int flags) |
303 | { |
369 | { |
304 | { |
370 | { |
305 | dSP; |
371 | dSP; |
306 | I32 cxix = cxstack_ix; |
372 | I32 cxix = cxstack_ix; |
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373 | PERL_CONTEXT *ccstk = cxstack; |
307 | PERL_SI *top_si = PL_curstackinfo; |
374 | PERL_SI *top_si = PL_curstackinfo; |
308 | PERL_CONTEXT *ccstk = cxstack; |
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309 | |
375 | |
310 | /* |
376 | /* |
311 | * the worst thing you can imagine happens first - we have to save |
377 | * the worst thing you can imagine happens first - we have to save |
312 | * (and reinitialize) all cv's in the whole callchain :( |
378 | * (and reinitialize) all cv's in the whole callchain :( |
313 | */ |
379 | */ |
314 | |
380 | |
315 | PUSHs (Nullsv); |
381 | PUSHs (Nullsv); |
316 | /* this loop was inspired by pp_caller */ |
382 | /* this loop was inspired by pp_caller */ |
317 | for (;;) |
383 | for (;;) |
318 | { |
384 | { |
319 | do |
385 | while (cxix >= 0) |
320 | { |
386 | { |
321 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
387 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
322 | |
388 | |
323 | if (CxTYPE(cx) == CXt_SUB) |
389 | if (CxTYPE(cx) == CXt_SUB) |
324 | { |
390 | { |
… | |
… | |
343 | PUSHs ((SV *)cv); |
409 | PUSHs ((SV *)cv); |
344 | |
410 | |
345 | get_padlist (cv); /* this is a monster */ |
411 | get_padlist (cv); /* this is a monster */ |
346 | } |
412 | } |
347 | } |
413 | } |
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414 | #ifdef CXt_FORMAT |
348 | else if (CxTYPE(cx) == CXt_FORMAT) |
415 | else if (CxTYPE(cx) == CXt_FORMAT) |
349 | { |
416 | { |
350 | /* I never used formats, so how should I know how these are implemented? */ |
417 | /* I never used formats, so how should I know how these are implemented? */ |
351 | /* my bold guess is as a simple, plain sub... */ |
418 | /* my bold guess is as a simple, plain sub... */ |
352 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
419 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
353 | } |
420 | } |
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421 | #endif |
354 | } |
422 | } |
355 | while (cxix >= 0); |
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356 | |
423 | |
357 | if (top_si->si_type == PERLSI_MAIN) |
424 | if (top_si->si_type == PERLSI_MAIN) |
358 | break; |
425 | break; |
359 | |
426 | |
360 | top_si = top_si->si_prev; |
427 | top_si = top_si->si_prev; |
… | |
… | |
363 | } |
430 | } |
364 | |
431 | |
365 | PUTBACK; |
432 | PUTBACK; |
366 | } |
433 | } |
367 | |
434 | |
368 | c->defav = flags & SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
435 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
369 | c->defsv = flags & SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
436 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
370 | c->errsv = flags & SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
437 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
371 | |
438 | |
372 | c->dowarn = PL_dowarn; |
439 | c->dowarn = PL_dowarn; |
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440 | c->in_eval = PL_in_eval; |
373 | |
441 | |
374 | c->curstackinfo = PL_curstackinfo; |
442 | c->curstackinfo = PL_curstackinfo; |
375 | c->curstack = PL_curstack; |
443 | c->curstack = PL_curstack; |
376 | c->mainstack = PL_mainstack; |
444 | c->mainstack = PL_mainstack; |
377 | c->stack_sp = PL_stack_sp; |
445 | c->stack_sp = PL_stack_sp; |
378 | c->op = PL_op; |
446 | c->op = PL_op; |
379 | c->curpad = PL_curpad; |
447 | c->curpad = PL_curpad; |
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448 | c->comppad = PL_comppad; |
380 | c->stack_base = PL_stack_base; |
449 | c->stack_base = PL_stack_base; |
381 | c->stack_max = PL_stack_max; |
450 | c->stack_max = PL_stack_max; |
382 | c->tmps_stack = PL_tmps_stack; |
451 | c->tmps_stack = PL_tmps_stack; |
383 | c->tmps_floor = PL_tmps_floor; |
452 | c->tmps_floor = PL_tmps_floor; |
384 | c->tmps_ix = PL_tmps_ix; |
453 | c->tmps_ix = PL_tmps_ix; |
… | |
… | |
394 | c->savestack_max = PL_savestack_max; |
463 | c->savestack_max = PL_savestack_max; |
395 | c->retstack = PL_retstack; |
464 | c->retstack = PL_retstack; |
396 | c->retstack_ix = PL_retstack_ix; |
465 | c->retstack_ix = PL_retstack_ix; |
397 | c->retstack_max = PL_retstack_max; |
466 | c->retstack_max = PL_retstack_max; |
398 | c->curcop = PL_curcop; |
467 | c->curcop = PL_curcop; |
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468 | c->top_env = PL_top_env; |
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469 | } |
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470 | |
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471 | /* |
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472 | * allocate various perl stacks. This is an exact copy |
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473 | * of perl.c:init_stacks, except that it uses less memory |
|
|
474 | * on the assumption that coroutines do not usually need |
|
|
475 | * a lot of stackspace. |
|
|
476 | */ |
|
|
477 | STATIC void |
|
|
478 | coro_init_stacks (pTHX) |
|
|
479 | { |
|
|
480 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
|
|
481 | PL_curstackinfo->si_type = PERLSI_MAIN; |
|
|
482 | PL_curstack = PL_curstackinfo->si_stack; |
|
|
483 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
|
|
484 | |
|
|
485 | PL_stack_base = AvARRAY(PL_curstack); |
|
|
486 | PL_stack_sp = PL_stack_base; |
|
|
487 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
|
|
488 | |
|
|
489 | New(50,PL_tmps_stack,96,SV*); |
|
|
490 | PL_tmps_floor = -1; |
|
|
491 | PL_tmps_ix = -1; |
|
|
492 | PL_tmps_max = 96; |
|
|
493 | |
|
|
494 | New(54,PL_markstack,16,I32); |
|
|
495 | PL_markstack_ptr = PL_markstack; |
|
|
496 | PL_markstack_max = PL_markstack + 16; |
|
|
497 | |
|
|
498 | #ifdef SET_MARK_OFFSET |
|
|
499 | SET_MARK_OFFSET; |
|
|
500 | #endif |
|
|
501 | |
|
|
502 | New(54,PL_scopestack,16,I32); |
|
|
503 | PL_scopestack_ix = 0; |
|
|
504 | PL_scopestack_max = 16; |
|
|
505 | |
|
|
506 | New(54,PL_savestack,96,ANY); |
|
|
507 | PL_savestack_ix = 0; |
|
|
508 | PL_savestack_max = 96; |
|
|
509 | |
|
|
510 | New(54,PL_retstack,8,OP*); |
|
|
511 | PL_retstack_ix = 0; |
|
|
512 | PL_retstack_max = 8; |
399 | } |
513 | } |
400 | |
514 | |
401 | /* |
515 | /* |
402 | * destroy the stacks, the callchain etc... |
516 | * destroy the stacks, the callchain etc... |
403 | * still there is a memleak of 128 bytes... |
|
|
404 | */ |
517 | */ |
405 | STATIC void |
518 | STATIC void |
406 | destroy_stacks(pTHX) |
519 | destroy_stacks(pTHX) |
407 | { |
520 | { |
|
|
521 | if (!IN_DESTRUCT) |
|
|
522 | { |
408 | /* is this ugly, I ask? */ |
523 | /* is this ugly, I ask? */ |
409 | while (PL_scopestack_ix) |
524 | while (PL_scopestack_ix) |
410 | LEAVE; |
525 | LEAVE; |
411 | |
526 | |
412 | /* sure it is, but more important: is it correct?? :/ */ |
527 | /* sure it is, but more important: is it correct?? :/ */ |
413 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
528 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
414 | FREETMPS; |
529 | FREETMPS; |
|
|
530 | } |
415 | |
531 | |
416 | while (PL_curstackinfo->si_next) |
532 | while (PL_curstackinfo->si_next) |
417 | PL_curstackinfo = PL_curstackinfo->si_next; |
533 | PL_curstackinfo = PL_curstackinfo->si_next; |
418 | |
534 | |
419 | while (PL_curstackinfo) |
535 | while (PL_curstackinfo) |
… | |
… | |
424 | dSP; |
540 | dSP; |
425 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
541 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
426 | PUTBACK; /* possibly superfluous */ |
542 | PUTBACK; /* possibly superfluous */ |
427 | } |
543 | } |
428 | |
544 | |
|
|
545 | if (!IN_DESTRUCT) |
|
|
546 | { |
429 | dounwind(-1); |
547 | dounwind(-1); |
430 | |
|
|
431 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
548 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
|
|
549 | } |
|
|
550 | |
432 | Safefree(PL_curstackinfo->si_cxstack); |
551 | Safefree(PL_curstackinfo->si_cxstack); |
433 | Safefree(PL_curstackinfo); |
552 | Safefree(PL_curstackinfo); |
434 | PL_curstackinfo = p; |
553 | PL_curstackinfo = p; |
435 | } |
554 | } |
436 | |
555 | |
… | |
… | |
439 | Safefree(PL_scopestack); |
558 | Safefree(PL_scopestack); |
440 | Safefree(PL_savestack); |
559 | Safefree(PL_savestack); |
441 | Safefree(PL_retstack); |
560 | Safefree(PL_retstack); |
442 | } |
561 | } |
443 | |
562 | |
|
|
563 | static void |
|
|
564 | allocate_stack (Coro__State ctx, int alloc) |
|
|
565 | { |
|
|
566 | coro_stack *stack; |
|
|
567 | |
|
|
568 | New (0, stack, 1, coro_stack); |
|
|
569 | |
|
|
570 | stack->refcnt = 1; |
|
|
571 | stack->usecnt = 1; |
|
|
572 | stack->gencnt = ctx->gencnt = 0; |
|
|
573 | if (alloc) |
|
|
574 | { |
|
|
575 | #if HAVE_MMAP |
|
|
576 | stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
577 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
578 | if (stack->sptr == (void *)-1) |
|
|
579 | #endif |
|
|
580 | { |
|
|
581 | /*FIXME*//*D*//* reasonable stack size! */ |
|
|
582 | stack->ssize = -4096 * sizeof (long); |
|
|
583 | New (0, stack->sptr, 4096, long); |
|
|
584 | } |
|
|
585 | } |
|
|
586 | else |
|
|
587 | stack->sptr = 0; |
|
|
588 | |
|
|
589 | ctx->stack = stack; |
|
|
590 | } |
|
|
591 | |
|
|
592 | static void |
|
|
593 | deallocate_stack (Coro__State ctx) |
|
|
594 | { |
|
|
595 | coro_stack *stack = ctx->stack; |
|
|
596 | |
|
|
597 | ctx->stack = 0; |
|
|
598 | |
|
|
599 | if (stack) |
|
|
600 | { |
|
|
601 | if (!--stack->refcnt) |
|
|
602 | { |
|
|
603 | #ifdef HAVE_MMAP |
|
|
604 | if (stack->ssize > 0 && stack->sptr) |
|
|
605 | munmap (stack->sptr, stack->ssize); |
|
|
606 | else |
|
|
607 | #endif |
|
|
608 | Safefree (stack->sptr); |
|
|
609 | |
|
|
610 | Safefree (stack); |
|
|
611 | } |
|
|
612 | else if (ctx->gencnt == stack->gencnt) |
|
|
613 | --stack->usecnt; |
|
|
614 | } |
|
|
615 | } |
|
|
616 | |
|
|
617 | static void |
|
|
618 | setup_coro (void *arg) |
|
|
619 | { |
|
|
620 | /* |
|
|
621 | * emulate part of the perl startup here. |
|
|
622 | */ |
|
|
623 | dSP; |
|
|
624 | Coro__State ctx = (Coro__State)arg; |
|
|
625 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
|
|
626 | |
|
|
627 | coro_init_stacks (aTHX); |
|
|
628 | /*PL_curcop = 0;*/ |
|
|
629 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
|
|
630 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
631 | GvAV (PL_defgv) = ctx->args; ctx->args = 0; |
|
|
632 | |
|
|
633 | SPAGAIN; |
|
|
634 | |
|
|
635 | if (ctx->stack) |
|
|
636 | { |
|
|
637 | ctx->cursp = 0; |
|
|
638 | |
|
|
639 | PUSHMARK(SP); |
|
|
640 | PUTBACK; |
|
|
641 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
642 | |
|
|
643 | if (SvTRUE (ERRSV)) |
|
|
644 | croak (NULL); |
|
|
645 | else |
|
|
646 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
647 | } |
|
|
648 | else |
|
|
649 | { |
|
|
650 | UNOP myop; |
|
|
651 | |
|
|
652 | PL_op = (OP *)&myop; |
|
|
653 | |
|
|
654 | Zero(&myop, 1, UNOP); |
|
|
655 | myop.op_next = Nullop; |
|
|
656 | myop.op_flags = OPf_WANT_VOID; |
|
|
657 | |
|
|
658 | PUSHMARK(SP); |
|
|
659 | XPUSHs (sub_init); |
|
|
660 | /* |
|
|
661 | * the next line is slightly wrong, as PL_op->op_next |
|
|
662 | * is actually being executed so we skip the first op. |
|
|
663 | * that doesn't matter, though, since it is only |
|
|
664 | * pp_nextstate and we never return... |
|
|
665 | * ah yes, and I don't care anyways ;) |
|
|
666 | */ |
|
|
667 | PUTBACK; |
|
|
668 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
669 | SPAGAIN; |
|
|
670 | |
|
|
671 | ENTER; /* necessary e.g. for dounwind */ |
|
|
672 | } |
|
|
673 | } |
|
|
674 | |
|
|
675 | static void |
|
|
676 | continue_coro (void *arg) |
|
|
677 | { |
|
|
678 | /* |
|
|
679 | * this is a _very_ stripped down perl interpreter ;) |
|
|
680 | */ |
|
|
681 | Coro__State ctx = (Coro__State)arg; |
|
|
682 | JMPENV coro_start_env; |
|
|
683 | |
|
|
684 | PL_top_env = &ctx->start_env; |
|
|
685 | |
|
|
686 | ctx->cursp = 0; |
|
|
687 | PL_op = PL_op->op_next; |
|
|
688 | CALLRUNOPS(aTHX); |
|
|
689 | |
|
|
690 | abort (); |
|
|
691 | } |
|
|
692 | |
444 | STATIC void |
693 | STATIC void |
445 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
694 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
446 | { |
695 | { |
447 | dSP; |
696 | dSTACKLEVEL; |
|
|
697 | static struct coro *xnext; |
448 | |
698 | |
449 | if (prev != next) |
699 | if (prev != next) |
450 | { |
700 | { |
451 | /* |
701 | xnext = next; |
452 | * this could be done in newprocess which would lead to |
702 | |
453 | * extremely elegant and fast (just SAVE/LOAD) |
|
|
454 | * code here, but lazy allocation of stacks has also |
|
|
455 | * some virtues and the overhead of the if() is nil. |
|
|
456 | */ |
|
|
457 | if (next->mainstack) |
703 | if (next->mainstack) |
458 | { |
704 | { |
459 | SAVE (prev, flags); |
705 | SAVE (prev, flags); |
460 | LOAD (next); |
706 | LOAD (next); |
|
|
707 | |
461 | /* mark this state as in-use */ |
708 | /* mark this state as in-use */ |
462 | next->mainstack = 0; |
709 | next->mainstack = 0; |
463 | next->tmps_ix = -2; |
710 | next->tmps_ix = -2; |
|
|
711 | |
|
|
712 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
713 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
714 | { |
|
|
715 | if (!prev->stack) |
|
|
716 | allocate_stack (prev, 0); |
|
|
717 | else if (prev->cursp != stacklevel |
|
|
718 | && prev->stack->usecnt > 1) |
|
|
719 | { |
|
|
720 | prev->gencnt = ++prev->stack->gencnt; |
|
|
721 | prev->stack->usecnt = 1; |
|
|
722 | } |
|
|
723 | |
|
|
724 | /* has our stack been invalidated? */ |
|
|
725 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
726 | { |
|
|
727 | deallocate_stack (next); |
|
|
728 | allocate_stack (next, 1); |
|
|
729 | coro_create (&(next->stack->cctx), |
|
|
730 | continue_coro, (void *)next, |
|
|
731 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
732 | } |
|
|
733 | |
|
|
734 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
735 | /* don't add any code here */ |
|
|
736 | } |
|
|
737 | |
464 | } |
738 | } |
465 | else if (next->tmps_ix == -2) |
739 | else if (next->tmps_ix == -2) |
466 | { |
|
|
467 | croak ("tried to transfer to running coroutine"); |
740 | croak ("tried to transfer to running coroutine"); |
468 | } |
|
|
469 | else |
741 | else |
470 | { |
742 | { |
471 | /* |
|
|
472 | * emulate part of the perl startup here. |
|
|
473 | */ |
|
|
474 | UNOP myop; |
|
|
475 | |
|
|
476 | SAVE (prev, -1); /* first get rid of the old state */ |
743 | SAVE (prev, -1); /* first get rid of the old state */ |
477 | |
744 | |
478 | init_stacks (); /* from perl.c */ |
745 | if (flags & TRANSFER_SAVE_CCTXT) |
479 | SPAGAIN; |
|
|
480 | |
|
|
481 | PL_op = (OP *)&myop; |
|
|
482 | /*PL_curcop = 0;*/ |
|
|
483 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
484 | GvAV (PL_defgv) = next->args; |
|
|
485 | |
|
|
486 | Zero(&myop, 1, UNOP); |
|
|
487 | myop.op_next = Nullop; |
|
|
488 | myop.op_flags = OPf_WANT_VOID; |
|
|
489 | |
|
|
490 | PUSHMARK(SP); |
|
|
491 | XPUSHs ((SV*)get_cv(SUB_INIT, TRUE)); |
|
|
492 | /* |
|
|
493 | * the next line is slightly wrong, as PL_op->op_next |
|
|
494 | * is actually being executed so we skip the first op. |
|
|
495 | * that doesn't matter, though, since it is only |
|
|
496 | * pp_nextstate and we never return... |
|
|
497 | * ah yes, and I don't care anyways ;) |
|
|
498 | */ |
746 | { |
499 | PUTBACK; |
747 | if (!prev->stack) |
500 | PL_op = pp_entersub(aTHX); |
748 | allocate_stack (prev, 0); |
501 | SPAGAIN; |
|
|
502 | |
749 | |
503 | ENTER; /* necessary e.g. for dounwind */ |
750 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
751 | { |
|
|
752 | PL_top_env = &next->start_env; |
|
|
753 | |
|
|
754 | setup_coro (next); |
|
|
755 | |
|
|
756 | prev->stack->refcnt++; |
|
|
757 | prev->stack->usecnt++; |
|
|
758 | next->stack = prev->stack; |
|
|
759 | next->gencnt = prev->gencnt; |
|
|
760 | } |
|
|
761 | else |
|
|
762 | { |
|
|
763 | assert (!next->stack); |
|
|
764 | allocate_stack (next, 1); |
|
|
765 | coro_create (&(next->stack->cctx), |
|
|
766 | setup_coro, (void *)next, |
|
|
767 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
768 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
769 | /* don't add any code here */ |
|
|
770 | } |
|
|
771 | } |
|
|
772 | else |
|
|
773 | setup_coro (next); |
504 | } |
774 | } |
|
|
775 | |
|
|
776 | /* |
|
|
777 | * xnext is now either prev or next, depending on wether |
|
|
778 | * we switched the c stack or not. that's why I use a global |
|
|
779 | * variable, that should become thread-specific at one point. |
|
|
780 | */ |
|
|
781 | xnext->cursp = stacklevel; |
505 | } |
782 | } |
|
|
783 | |
|
|
784 | if (coro_mortal) |
|
|
785 | { |
|
|
786 | SvREFCNT_dec (coro_mortal); |
|
|
787 | coro_mortal = 0; |
|
|
788 | } |
|
|
789 | } |
|
|
790 | |
|
|
791 | #define SV_CORO(sv,func) \ |
|
|
792 | do { \ |
|
|
793 | if (SvROK (sv)) \ |
|
|
794 | sv = SvRV (sv); \ |
|
|
795 | \ |
|
|
796 | if (SvTYPE(sv) == SVt_PVHV) \ |
|
|
797 | { \ |
|
|
798 | HE *he = hv_fetch_ent((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
799 | \ |
|
|
800 | if (!he) \ |
|
|
801 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
802 | \ |
|
|
803 | (sv) = SvRV (HeVAL(he)); \ |
|
|
804 | } \ |
|
|
805 | \ |
|
|
806 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
807 | if (!SvOBJECT(sv) || SvSTASH(sv) != coro_state_stash) \ |
|
|
808 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
809 | \ |
|
|
810 | } while(0) |
|
|
811 | |
|
|
812 | #define SvSTATE(sv) (struct coro *)SvIV (sv) |
|
|
813 | |
|
|
814 | static void |
|
|
815 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
|
|
816 | { |
|
|
817 | SV_CORO (prev, "Coro::transfer"); |
|
|
818 | SV_CORO (next, "Coro::transfer"); |
|
|
819 | |
|
|
820 | transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags); |
|
|
821 | } |
|
|
822 | |
|
|
823 | /** Coro ********************************************************************/ |
|
|
824 | |
|
|
825 | #define PRIO_MAX 3 |
|
|
826 | #define PRIO_HIGH 1 |
|
|
827 | #define PRIO_NORMAL 0 |
|
|
828 | #define PRIO_LOW -1 |
|
|
829 | #define PRIO_IDLE -3 |
|
|
830 | #define PRIO_MIN -4 |
|
|
831 | |
|
|
832 | /* for Coro.pm */ |
|
|
833 | static GV *coro_current, *coro_idle; |
|
|
834 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
|
|
835 | static int coro_nready; |
|
|
836 | |
|
|
837 | static void |
|
|
838 | coro_enq (SV *sv) |
|
|
839 | { |
|
|
840 | if (SvTYPE (sv) == SVt_PVHV) |
|
|
841 | { |
|
|
842 | SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
843 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
844 | |
|
|
845 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
846 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
847 | : prio; |
|
|
848 | |
|
|
849 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
850 | coro_nready++; |
|
|
851 | |
|
|
852 | return; |
|
|
853 | } |
|
|
854 | |
|
|
855 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
856 | } |
|
|
857 | |
|
|
858 | static SV * |
|
|
859 | coro_deq (int min_prio) |
|
|
860 | { |
|
|
861 | int prio = PRIO_MAX - PRIO_MIN; |
|
|
862 | |
|
|
863 | min_prio -= PRIO_MIN; |
|
|
864 | if (min_prio < 0) |
|
|
865 | min_prio = 0; |
|
|
866 | |
|
|
867 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
|
|
868 | if (av_len (coro_ready[prio]) >= 0) |
|
|
869 | { |
|
|
870 | coro_nready--; |
|
|
871 | return av_shift (coro_ready[prio]); |
|
|
872 | } |
|
|
873 | |
|
|
874 | return 0; |
|
|
875 | } |
|
|
876 | |
|
|
877 | static void |
|
|
878 | api_ready (SV *coro) |
|
|
879 | { |
|
|
880 | if (SvROK (coro)) |
|
|
881 | coro = SvRV (coro); |
|
|
882 | |
|
|
883 | coro_enq (SvREFCNT_inc (coro)); |
|
|
884 | } |
|
|
885 | |
|
|
886 | static void |
|
|
887 | api_schedule (void) |
|
|
888 | { |
|
|
889 | SV *prev, *next; |
|
|
890 | |
|
|
891 | prev = SvRV (GvSV (coro_current)); |
|
|
892 | next = coro_deq (PRIO_MIN); |
|
|
893 | |
|
|
894 | if (!next) |
|
|
895 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
|
|
896 | |
|
|
897 | /* free this only after the transfer */ |
|
|
898 | coro_mortal = prev; |
|
|
899 | SV_CORO (prev, "Coro::schedule"); |
|
|
900 | |
|
|
901 | SvRV (GvSV (coro_current)) = next; |
|
|
902 | |
|
|
903 | SV_CORO (next, "Coro::schedule"); |
|
|
904 | |
|
|
905 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
|
|
906 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
907 | } |
|
|
908 | |
|
|
909 | static void |
|
|
910 | api_cede (void) |
|
|
911 | { |
|
|
912 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
913 | |
|
|
914 | api_schedule (); |
506 | } |
915 | } |
507 | |
916 | |
508 | MODULE = Coro::State PACKAGE = Coro::State |
917 | MODULE = Coro::State PACKAGE = Coro::State |
509 | |
918 | |
510 | PROTOTYPES: ENABLE |
919 | PROTOTYPES: ENABLE |
511 | |
920 | |
512 | BOOT: |
921 | BOOT: |
513 | { /* {} necessary for stoopid perl-5.6.x */ |
922 | { /* {} necessary for stoopid perl-5.6.x */ |
|
|
923 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
|
|
924 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
514 | HV * stash = gv_stashpvn("Coro::State", 10, TRUE); |
925 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
515 | |
926 | |
516 | newCONSTSUB (stash, "SAVE_DEFAV", newSViv (SAVE_DEFAV)); |
927 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
517 | newCONSTSUB (stash, "SAVE_DEFSV", newSViv (SAVE_DEFSV)); |
928 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
518 | newCONSTSUB (stash, "SAVE_ERRSV", newSViv (SAVE_ERRSV)); |
929 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
|
|
930 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
519 | |
931 | |
520 | if (!padlist_cache) |
932 | if (!padlist_cache) |
521 | padlist_cache = newHV (); |
933 | padlist_cache = newHV (); |
|
|
934 | |
|
|
935 | main_mainstack = PL_mainstack; |
|
|
936 | |
|
|
937 | coroapi.ver = CORO_API_VERSION; |
|
|
938 | coroapi.transfer = api_transfer; |
522 | } |
939 | } |
523 | |
940 | |
524 | Coro::State |
941 | Coro::State |
525 | _newprocess(args) |
942 | _newprocess(args) |
526 | SV * args |
943 | SV * args |
… | |
… | |
529 | Coro__State coro; |
946 | Coro__State coro; |
530 | |
947 | |
531 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
948 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
532 | croak ("Coro::State::_newprocess expects an arrayref"); |
949 | croak ("Coro::State::_newprocess expects an arrayref"); |
533 | |
950 | |
534 | New (0, coro, 1, struct coro); |
951 | Newz (0, coro, 1, struct coro); |
535 | |
952 | |
|
|
953 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
536 | coro->mainstack = 0; /* actual work is done inside transfer */ |
954 | coro->mainstack = 0; /* actual work is done inside transfer */ |
537 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
955 | coro->stack = 0; |
|
|
956 | |
|
|
957 | /* same as JMPENV_BOOTSTRAP */ |
|
|
958 | /* we might be able to recycle start_env, but safe is safe */ |
|
|
959 | //Zero(&coro->start_env, 1, JMPENV); |
|
|
960 | coro->start_env.je_ret = -1; |
|
|
961 | coro->start_env.je_mustcatch = TRUE; |
538 | |
962 | |
539 | RETVAL = coro; |
963 | RETVAL = coro; |
540 | OUTPUT: |
964 | OUTPUT: |
541 | RETVAL |
965 | RETVAL |
542 | |
966 | |
543 | void |
967 | void |
544 | transfer(prev, next, flags = SAVE_DEFAV) |
968 | transfer(prev, next, flags) |
545 | Coro::State_or_hashref prev |
969 | SV *prev |
546 | Coro::State_or_hashref next |
970 | SV *next |
547 | int flags |
971 | int flags |
548 | PROTOTYPE: @ |
972 | PROTOTYPE: @ |
549 | CODE: |
973 | CODE: |
550 | |
974 | PUTBACK; |
|
|
975 | SV_CORO (next, "Coro::transfer"); |
|
|
976 | SV_CORO (prev, "Coro::transfer"); |
551 | transfer (aTHX_ prev, next, flags); |
977 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
|
|
978 | SPAGAIN; |
552 | |
979 | |
553 | void |
980 | void |
554 | DESTROY(coro) |
981 | DESTROY(coro) |
555 | Coro::State coro |
982 | Coro::State coro |
556 | CODE: |
983 | CODE: |
557 | |
984 | |
558 | if (coro->mainstack) |
985 | if (coro->mainstack && coro->mainstack != main_mainstack) |
559 | { |
986 | { |
560 | struct coro temp; |
987 | struct coro temp; |
561 | |
988 | |
|
|
989 | PUTBACK; |
562 | SAVE(aTHX_ (&temp), SAVE_ALL); |
990 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
563 | LOAD(aTHX_ coro); |
991 | LOAD(aTHX_ coro); |
|
|
992 | SPAGAIN; |
564 | |
993 | |
565 | destroy_stacks (); |
994 | destroy_stacks (aTHX); |
566 | |
995 | |
567 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
996 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
|
|
997 | SPAGAIN; |
|
|
998 | |
|
|
999 | coro->mainstack = 0; |
568 | } |
1000 | } |
569 | |
1001 | |
|
|
1002 | deallocate_stack (coro); |
|
|
1003 | SvREFCNT_dec (coro->args); |
570 | Safefree (coro); |
1004 | Safefree (coro); |
571 | |
1005 | |
572 | void |
1006 | void |
573 | flush() |
1007 | _exit(code) |
|
|
1008 | int code |
|
|
1009 | PROTOTYPE: $ |
574 | CODE: |
1010 | CODE: |
575 | #ifdef MAY_FLUSH |
1011 | #if defined(__GLIBC__) || _POSIX_C_SOURCE |
576 | flush_padlist_cache (); |
1012 | _exit (code); |
|
|
1013 | #else |
|
|
1014 | signal (SIGTERM, SIG_DFL); |
|
|
1015 | raise (SIGTERM); |
|
|
1016 | exit (code); |
577 | #endif |
1017 | #endif |
578 | |
1018 | |
579 | MODULE = Coro::State PACKAGE = Coro::Cont |
1019 | MODULE = Coro::State PACKAGE = Coro::Cont |
580 | |
1020 | |
581 | # this is dirty and should be in it's own .xs |
1021 | # this is slightly dirty (should expose a c-level api) |
582 | |
1022 | |
583 | void |
1023 | void |
584 | result(...) |
1024 | yield(...) |
585 | PROTOTYPE: @ |
1025 | PROTOTYPE: @ |
586 | CODE: |
1026 | CODE: |
587 | static SV *returnstk; |
1027 | static SV *returnstk; |
588 | SV *sv; |
1028 | SV *sv; |
589 | AV *defav = GvAV (PL_defgv); |
1029 | AV *defav = GvAV (PL_defgv); |
590 | struct coro *prev, *next; |
1030 | struct coro *prev, *next; |
591 | |
1031 | |
592 | if (!returnstk) |
1032 | if (!returnstk) |
593 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
1033 | returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE)); |
594 | |
1034 | |
595 | /* set up @_ */ |
1035 | /* set up @_ -- ugly */ |
596 | av_clear (defav); |
1036 | av_clear (defav); |
597 | av_fill (defav, items - 1); |
1037 | av_fill (defav, items - 1); |
598 | while (items--) |
1038 | while (items--) |
599 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
1039 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
600 | |
1040 | |
601 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
1041 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
602 | sv = av_pop ((AV *)SvRV (returnstk)); |
1042 | sv = av_pop ((AV *)SvRV (returnstk)); |
603 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
1043 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
604 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
1044 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
605 | SvREFCNT_dec (sv); |
1045 | SvREFCNT_dec (sv); |
|
|
1046 | |
606 | transfer(prev, next, 0); |
1047 | transfer(aTHX_ prev, next, 0); |
607 | |
1048 | |
|
|
1049 | MODULE = Coro::State PACKAGE = Coro |
|
|
1050 | |
|
|
1051 | # this is slightly dirty (should expose a c-level api) |
|
|
1052 | |
|
|
1053 | BOOT: |
|
|
1054 | { |
|
|
1055 | int i; |
|
|
1056 | HV *stash = gv_stashpv ("Coro", TRUE); |
|
|
1057 | |
|
|
1058 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
|
|
1059 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
|
|
1060 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
|
|
1061 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
|
|
1062 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
|
|
1063 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
|
|
1064 | |
|
|
1065 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1066 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1067 | |
|
|
1068 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
|
|
1069 | coro_ready[i] = newAV (); |
|
|
1070 | |
|
|
1071 | { |
|
|
1072 | SV *sv = perl_get_sv("Coro::API", 1); |
|
|
1073 | |
|
|
1074 | coroapi.schedule = api_schedule; |
|
|
1075 | coroapi.cede = api_cede; |
|
|
1076 | coroapi.ready = api_ready; |
|
|
1077 | coroapi.nready = &coro_nready; |
|
|
1078 | coroapi.current = coro_current; |
|
|
1079 | |
|
|
1080 | GCoroAPI = &coroapi; |
|
|
1081 | sv_setiv(sv, (IV)&coroapi); |
|
|
1082 | SvREADONLY_on(sv); |
|
|
1083 | } |
|
|
1084 | } |
|
|
1085 | |
|
|
1086 | #if !PERL_MICRO |
|
|
1087 | |
|
|
1088 | void |
|
|
1089 | ready(self) |
|
|
1090 | SV * self |
|
|
1091 | PROTOTYPE: $ |
|
|
1092 | CODE: |
|
|
1093 | api_ready (self); |
|
|
1094 | |
|
|
1095 | #endif |
|
|
1096 | |
|
|
1097 | int |
|
|
1098 | nready(...) |
|
|
1099 | PROTOTYPE: |
|
|
1100 | CODE: |
|
|
1101 | RETVAL = coro_nready; |
|
|
1102 | OUTPUT: |
|
|
1103 | RETVAL |
|
|
1104 | |
|
|
1105 | void |
|
|
1106 | schedule(...) |
|
|
1107 | PROTOTYPE: |
|
|
1108 | CODE: |
|
|
1109 | api_schedule (); |
|
|
1110 | |
|
|
1111 | void |
|
|
1112 | cede(...) |
|
|
1113 | PROTOTYPE: |
|
|
1114 | CODE: |
|
|
1115 | api_cede (); |
|
|
1116 | |