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1 | #define PERL_NO_GET_CONTEXT |
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2 | |
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3 | #include "libcoro/coro.c" |
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4 | |
1 | #include "EXTERN.h" |
5 | #include "EXTERN.h" |
2 | #include "perl.h" |
6 | #include "perl.h" |
3 | #include "XSUB.h" |
7 | #include "XSUB.h" |
4 | |
8 | |
5 | #if 1 |
9 | #include "patchlevel.h" |
6 | # define CHK(x) (void *)0 |
10 | |
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11 | #if PERL_VERSION < 6 |
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12 | # ifndef PL_ppaddr |
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13 | # define PL_ppaddr ppaddr |
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14 | # endif |
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15 | # ifndef call_sv |
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16 | # define call_sv perl_call_sv |
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17 | # endif |
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18 | # ifndef get_sv |
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19 | # define get_sv perl_get_sv |
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20 | # endif |
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21 | # ifndef get_cv |
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22 | # define get_cv perl_get_cv |
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23 | # endif |
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24 | # ifndef IS_PADGV |
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25 | # define IS_PADGV(v) 0 |
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26 | # endif |
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27 | # ifndef IS_PADCONST |
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28 | # define IS_PADCONST(v) 0 |
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29 | # endif |
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30 | #endif |
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31 | |
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32 | #include <signal.h> |
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33 | |
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34 | #ifdef HAVE_MMAP |
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35 | # include <unistd.h> |
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36 | # include <sys/mman.h> |
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37 | # ifndef MAP_ANONYMOUS |
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38 | # ifdef MAP_ANON |
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39 | # define MAP_ANONYMOUS MAP_ANON |
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40 | # else |
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41 | # undef HAVE_MMAP |
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42 | # endif |
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43 | # endif |
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44 | #endif |
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45 | |
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46 | #define SUB_INIT "Coro::State::initialize" |
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47 | #define UCORO_STATE "_coro_state" |
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48 | |
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49 | /* The next macro should declare a variable stacklevel that contains and approximation |
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50 | * to the current C stack pointer. Its property is that it changes with each call |
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51 | * and should be unique. */ |
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52 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
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53 | |
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54 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
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55 | |
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56 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
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57 | |
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58 | #include "CoroAPI.h" |
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59 | |
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60 | #ifdef USE_ITHREADS |
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61 | static perl_mutex coro_mutex; |
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62 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
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63 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
7 | #else |
64 | #else |
8 | # define CHK(x) if (!(x)) croak("FATAL, CHK: " #x) |
65 | # define LOCK 0 |
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66 | # define UNLOCK 0 |
9 | #endif |
67 | #endif |
10 | |
68 | |
11 | #define MAY_FLUSH /* increases codesize */ |
69 | static struct CoroAPI coroapi; |
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70 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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71 | static HV *coro_state_stash; |
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72 | static SV *ucoro_state_sv; |
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73 | static U32 ucoro_state_hash; |
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74 | static SV *coro_mortal; /* will be freed after next transfer */ |
12 | |
75 | |
13 | #define SUB_INIT "Coro::State::_newcoro" |
76 | /* this is actually not only the c stack but also c registers etc... */ |
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77 | typedef struct { |
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78 | int refcnt; /* pointer reference counter */ |
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79 | int usecnt; /* shared by how many coroutines */ |
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80 | int gencnt; /* generation counter */ |
14 | |
81 | |
15 | #define SAVE_DEFAV 0x00000001 |
82 | coro_context cctx; |
16 | #define SAVE_DEFSV 0x00000002 |
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17 | #define SAVE_ERRSV 0x00000004 |
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18 | |
83 | |
19 | #define SAVE_ALL -1 |
84 | void *sptr; |
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85 | long ssize; /* positive == mmap, otherwise malloc */ |
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86 | } coro_stack; |
20 | |
87 | |
21 | struct coro { |
88 | struct coro { |
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89 | /* the top-level JMPENV for each coroutine, needed to catch dies. */ |
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90 | JMPENV start_env; |
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91 | |
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92 | /* the optional C context */ |
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93 | coro_stack *stack; |
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94 | void *cursp; |
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95 | int gencnt; |
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96 | |
22 | /* optionally saved, might be zero */ |
97 | /* optionally saved, might be zero */ |
23 | AV *defav; |
98 | AV *defav; |
24 | SV *defsv; |
99 | SV *defsv; |
25 | SV *errsv; |
100 | SV *errsv; |
26 | |
101 | |
27 | /* saved global state not related to stacks */ |
102 | /* saved global state not related to stacks */ |
28 | U8 dowarn; |
103 | U8 dowarn; |
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104 | I32 in_eval; |
29 | |
105 | |
30 | /* the stacks and related info (callchain etc..) */ |
106 | /* the stacks and related info (callchain etc..) */ |
31 | PERL_SI *curstackinfo; |
107 | PERL_SI *curstackinfo; |
32 | AV *curstack; |
108 | AV *curstack; |
33 | AV *mainstack; |
109 | AV *mainstack; |
34 | SV **stack_sp; |
110 | SV **stack_sp; |
35 | OP *op; |
111 | OP *op; |
36 | SV **curpad; |
112 | SV **curpad; |
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113 | AV *comppad; |
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114 | CV *compcv; |
37 | SV **stack_base; |
115 | SV **stack_base; |
38 | SV **stack_max; |
116 | SV **stack_max; |
39 | SV **tmps_stack; |
117 | SV **tmps_stack; |
40 | I32 tmps_floor; |
118 | I32 tmps_floor; |
41 | I32 tmps_ix; |
119 | I32 tmps_ix; |
… | |
… | |
51 | I32 savestack_max; |
129 | I32 savestack_max; |
52 | OP **retstack; |
130 | OP **retstack; |
53 | I32 retstack_ix; |
131 | I32 retstack_ix; |
54 | I32 retstack_max; |
132 | I32 retstack_max; |
55 | COP *curcop; |
133 | COP *curcop; |
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134 | JMPENV *top_env; |
56 | |
135 | |
57 | /* data associated with this coroutine (initial args) */ |
136 | /* data associated with this coroutine (initial args) */ |
58 | AV *args; |
137 | AV *args; |
59 | }; |
138 | }; |
60 | |
139 | |
61 | typedef struct coro *Coro__State; |
140 | typedef struct coro *Coro__State; |
62 | typedef struct coro *Coro__State_or_hashref; |
141 | typedef struct coro *Coro__State_or_hashref; |
63 | |
142 | |
64 | static HV *padlist_cache; |
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65 | |
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66 | /* mostly copied from op.c:cv_clone2 */ |
143 | /* mostly copied from op.c:cv_clone2 */ |
67 | STATIC AV * |
144 | STATIC AV * |
68 | clone_padlist (AV *protopadlist) |
145 | clone_padlist (pTHX_ AV *protopadlist) |
69 | { |
146 | { |
70 | AV *av; |
147 | AV *av; |
71 | I32 ix; |
148 | I32 ix; |
72 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
149 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
73 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
150 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
… | |
… | |
97 | AvFLAGS (av) = AVf_REIFY; |
174 | AvFLAGS (av) = AVf_REIFY; |
98 | |
175 | |
99 | for (ix = fpad; ix > 0; ix--) |
176 | for (ix = fpad; ix > 0; ix--) |
100 | { |
177 | { |
101 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
178 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
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179 | |
102 | if (namesv && namesv != &PL_sv_undef) |
180 | if (namesv && namesv != &PL_sv_undef) |
103 | { |
181 | { |
104 | char *name = SvPVX (namesv); /* XXX */ |
182 | char *name = SvPVX (namesv); /* XXX */ |
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183 | |
105 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
184 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
106 | { /* lexical from outside? */ |
185 | { /* lexical from outside? */ |
107 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
186 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
108 | } |
187 | } |
109 | else |
188 | else |
… | |
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115 | sv = (SV *) newAV (); |
194 | sv = (SV *) newAV (); |
116 | else if (*name == '%') |
195 | else if (*name == '%') |
117 | sv = (SV *) newHV (); |
196 | sv = (SV *) newHV (); |
118 | else |
197 | else |
119 | sv = NEWSV (0, 0); |
198 | sv = NEWSV (0, 0); |
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199 | |
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200 | #ifdef SvPADBUSY |
120 | if (!SvPADBUSY (sv)) |
201 | if (!SvPADBUSY (sv)) |
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202 | #endif |
121 | SvPADMY_on (sv); |
203 | SvPADMY_on (sv); |
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204 | |
122 | npad[ix] = sv; |
205 | npad[ix] = sv; |
123 | } |
206 | } |
124 | } |
207 | } |
125 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
208 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
126 | { |
209 | { |
… | |
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155 | #endif |
238 | #endif |
156 | |
239 | |
157 | return newpadlist; |
240 | return newpadlist; |
158 | } |
241 | } |
159 | |
242 | |
160 | #ifdef MAY_FLUSH |
243 | STATIC void |
161 | STATIC AV * |
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162 | free_padlist (AV *padlist) |
244 | free_padlist (pTHX_ AV *padlist) |
163 | { |
245 | { |
164 | /* may be during global destruction */ |
246 | /* may be during global destruction */ |
165 | if (SvREFCNT(padlist)) |
247 | if (SvREFCNT (padlist)) |
166 | { |
248 | { |
167 | I32 i = AvFILLp(padlist); |
249 | I32 i = AvFILLp (padlist); |
168 | while (i >= 0) |
250 | while (i >= 0) |
169 | { |
251 | { |
170 | SV **svp = av_fetch(padlist, i--, FALSE); |
252 | SV **svp = av_fetch (padlist, i--, FALSE); |
171 | SV *sv = svp ? *svp : Nullsv; |
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172 | if (sv) |
253 | if (svp) |
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254 | { |
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255 | SV *sv; |
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256 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
173 | SvREFCNT_dec(sv); |
257 | SvREFCNT_dec (sv); |
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258 | |
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259 | SvREFCNT_dec (*svp); |
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260 | } |
174 | } |
261 | } |
175 | |
262 | |
176 | SvREFCNT_dec((SV*)padlist); |
263 | SvREFCNT_dec ((SV*)padlist); |
177 | } |
264 | } |
178 | } |
265 | } |
179 | #endif |
266 | |
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267 | STATIC int |
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268 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
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269 | { |
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270 | AV *padlist; |
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271 | AV *av = (AV *)mg->mg_obj; |
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272 | |
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273 | /* casting is fun. */ |
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274 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
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275 | free_padlist (aTHX_ padlist); |
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276 | |
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277 | SvREFCNT_dec (av); |
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278 | } |
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279 | |
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280 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
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281 | |
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282 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
180 | |
283 | |
181 | /* the next two functions merely cache the padlists */ |
284 | /* the next two functions merely cache the padlists */ |
182 | STATIC void |
285 | STATIC void |
183 | get_padlist (CV *cv) |
286 | get_padlist (pTHX_ CV *cv) |
184 | { |
287 | { |
185 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
288 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
186 | |
289 | |
187 | if (he && AvFILLp ((AV *)*he) >= 0) |
290 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
188 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
291 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
189 | else |
292 | else |
190 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
293 | CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv)); |
191 | } |
294 | } |
192 | |
295 | |
193 | STATIC void |
296 | STATIC void |
194 | put_padlist (CV *cv) |
297 | put_padlist (pTHX_ CV *cv) |
195 | { |
298 | { |
196 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
299 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
197 | |
300 | |
198 | if (SvTYPE (*he) != SVt_PVAV) |
301 | if (!mg) |
199 | { |
302 | { |
200 | SvREFCNT_dec (*he); |
303 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
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304 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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305 | mg->mg_virtual = &vtbl_coro; |
201 | *he = (SV *)newAV (); |
306 | mg->mg_obj = (SV *)newAV (); |
202 | } |
307 | } |
203 | |
308 | |
204 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
309 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
205 | } |
310 | } |
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 | |
311 | |
233 | #define SB do { |
312 | #define SB do { |
234 | #define SE } while (0) |
313 | #define SE } while (0) |
235 | |
314 | |
236 | #define LOAD(state) SB load_state(aTHX_ state); SPAGAIN; SE |
315 | #define LOAD(state) load_state(aTHX_ (state)); |
237 | #define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ state,flags); SE |
316 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
238 | |
317 | |
239 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
318 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
240 | |
319 | |
241 | static void |
320 | static void |
242 | load_state(pTHX_ Coro__State c) |
321 | load_state(pTHX_ Coro__State c) |
243 | { |
322 | { |
244 | PL_dowarn = c->dowarn; |
323 | PL_dowarn = c->dowarn; |
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324 | PL_in_eval = c->in_eval; |
245 | |
325 | |
246 | PL_curstackinfo = c->curstackinfo; |
326 | PL_curstackinfo = c->curstackinfo; |
247 | PL_curstack = c->curstack; |
327 | PL_curstack = c->curstack; |
248 | PL_mainstack = c->mainstack; |
328 | PL_mainstack = c->mainstack; |
249 | PL_stack_sp = c->stack_sp; |
329 | PL_stack_sp = c->stack_sp; |
250 | PL_op = c->op; |
330 | PL_op = c->op; |
251 | PL_curpad = c->curpad; |
331 | PL_curpad = c->curpad; |
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332 | PL_comppad = c->comppad; |
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333 | PL_compcv = c->compcv; |
252 | PL_stack_base = c->stack_base; |
334 | PL_stack_base = c->stack_base; |
253 | PL_stack_max = c->stack_max; |
335 | PL_stack_max = c->stack_max; |
254 | PL_tmps_stack = c->tmps_stack; |
336 | PL_tmps_stack = c->tmps_stack; |
255 | PL_tmps_floor = c->tmps_floor; |
337 | PL_tmps_floor = c->tmps_floor; |
256 | PL_tmps_ix = c->tmps_ix; |
338 | PL_tmps_ix = c->tmps_ix; |
… | |
… | |
266 | PL_savestack_max = c->savestack_max; |
348 | PL_savestack_max = c->savestack_max; |
267 | PL_retstack = c->retstack; |
349 | PL_retstack = c->retstack; |
268 | PL_retstack_ix = c->retstack_ix; |
350 | PL_retstack_ix = c->retstack_ix; |
269 | PL_retstack_max = c->retstack_max; |
351 | PL_retstack_max = c->retstack_max; |
270 | PL_curcop = c->curcop; |
352 | PL_curcop = c->curcop; |
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353 | PL_top_env = c->top_env; |
271 | |
354 | |
272 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
355 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
273 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
356 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
274 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
357 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
275 | |
358 | |
… | |
… | |
282 | { |
365 | { |
283 | AV *padlist = (AV *)POPs; |
366 | AV *padlist = (AV *)POPs; |
284 | |
367 | |
285 | if (padlist) |
368 | if (padlist) |
286 | { |
369 | { |
287 | put_padlist (cv); /* mark this padlist as available */ |
370 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
288 | CvPADLIST(cv) = padlist; |
371 | CvPADLIST(cv) = padlist; |
289 | #ifdef USE_THREADS |
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290 | /*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
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291 | #endif |
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292 | } |
372 | } |
293 | |
373 | |
294 | ++CvDEPTH(cv); |
374 | ++CvDEPTH(cv); |
295 | } |
375 | } |
296 | |
376 | |
… | |
… | |
302 | save_state(pTHX_ Coro__State c, int flags) |
382 | save_state(pTHX_ Coro__State c, int flags) |
303 | { |
383 | { |
304 | { |
384 | { |
305 | dSP; |
385 | dSP; |
306 | I32 cxix = cxstack_ix; |
386 | I32 cxix = cxstack_ix; |
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387 | PERL_CONTEXT *ccstk = cxstack; |
307 | PERL_SI *top_si = PL_curstackinfo; |
388 | PERL_SI *top_si = PL_curstackinfo; |
308 | PERL_CONTEXT *ccstk = cxstack; |
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309 | |
389 | |
310 | /* |
390 | /* |
311 | * the worst thing you can imagine happens first - we have to save |
391 | * the worst thing you can imagine happens first - we have to save |
312 | * (and reinitialize) all cv's in the whole callchain :( |
392 | * (and reinitialize) all cv's in the whole callchain :( |
313 | */ |
393 | */ |
314 | |
394 | |
315 | PUSHs (Nullsv); |
395 | PUSHs (Nullsv); |
316 | /* this loop was inspired by pp_caller */ |
396 | /* this loop was inspired by pp_caller */ |
317 | for (;;) |
397 | for (;;) |
318 | { |
398 | { |
319 | do |
399 | while (cxix >= 0) |
320 | { |
400 | { |
321 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
401 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
322 | |
402 | |
323 | if (CxTYPE(cx) == CXt_SUB) |
403 | if (CxTYPE(cx) == CXt_SUB) |
324 | { |
404 | { |
325 | CV *cv = cx->blk_sub.cv; |
405 | CV *cv = cx->blk_sub.cv; |
326 | if (CvDEPTH(cv)) |
406 | if (CvDEPTH(cv)) |
327 | { |
407 | { |
328 | #ifdef USE_THREADS |
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329 | /*XPUSHs ((SV *)CvOWNER(cv));*/ |
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330 | /*CvOWNER(cv) = 0;*/ |
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331 | /*error must unlock this cv etc.. etc...*/ |
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332 | #endif |
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333 | EXTEND (SP, CvDEPTH(cv)*2); |
408 | EXTEND (SP, CvDEPTH(cv)*2); |
334 | |
409 | |
335 | while (--CvDEPTH(cv)) |
410 | while (--CvDEPTH(cv)) |
336 | { |
411 | { |
337 | /* this tells the restore code to increment CvDEPTH */ |
412 | /* this tells the restore code to increment CvDEPTH */ |
… | |
… | |
340 | } |
415 | } |
341 | |
416 | |
342 | PUSHs ((SV *)CvPADLIST(cv)); |
417 | PUSHs ((SV *)CvPADLIST(cv)); |
343 | PUSHs ((SV *)cv); |
418 | PUSHs ((SV *)cv); |
344 | |
419 | |
345 | get_padlist (cv); /* this is a monster */ |
420 | get_padlist (aTHX_ cv); /* this is a monster */ |
346 | } |
421 | } |
347 | } |
422 | } |
|
|
423 | #ifdef CXt_FORMAT |
348 | else if (CxTYPE(cx) == CXt_FORMAT) |
424 | else if (CxTYPE(cx) == CXt_FORMAT) |
349 | { |
425 | { |
350 | /* I never used formats, so how should I know how these are implemented? */ |
426 | /* I never used formats, so how should I know how these are implemented? */ |
351 | /* my bold guess is as a simple, plain sub... */ |
427 | /* my bold guess is as a simple, plain sub... */ |
352 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
428 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
353 | } |
429 | } |
|
|
430 | #endif |
354 | } |
431 | } |
355 | while (cxix >= 0); |
|
|
356 | |
432 | |
357 | if (top_si->si_type == PERLSI_MAIN) |
433 | if (top_si->si_type == PERLSI_MAIN) |
358 | break; |
434 | break; |
359 | |
435 | |
360 | top_si = top_si->si_prev; |
436 | top_si = top_si->si_prev; |
… | |
… | |
363 | } |
439 | } |
364 | |
440 | |
365 | PUTBACK; |
441 | PUTBACK; |
366 | } |
442 | } |
367 | |
443 | |
368 | c->defav = flags & SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
444 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
369 | c->defsv = flags & SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
445 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
370 | c->errsv = flags & SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
446 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
371 | |
447 | |
372 | c->dowarn = PL_dowarn; |
448 | c->dowarn = PL_dowarn; |
|
|
449 | c->in_eval = PL_in_eval; |
373 | |
450 | |
374 | c->curstackinfo = PL_curstackinfo; |
451 | c->curstackinfo = PL_curstackinfo; |
375 | c->curstack = PL_curstack; |
452 | c->curstack = PL_curstack; |
376 | c->mainstack = PL_mainstack; |
453 | c->mainstack = PL_mainstack; |
377 | c->stack_sp = PL_stack_sp; |
454 | c->stack_sp = PL_stack_sp; |
378 | c->op = PL_op; |
455 | c->op = PL_op; |
379 | c->curpad = PL_curpad; |
456 | c->curpad = PL_curpad; |
|
|
457 | c->comppad = PL_comppad; |
|
|
458 | c->compcv = PL_compcv; |
380 | c->stack_base = PL_stack_base; |
459 | c->stack_base = PL_stack_base; |
381 | c->stack_max = PL_stack_max; |
460 | c->stack_max = PL_stack_max; |
382 | c->tmps_stack = PL_tmps_stack; |
461 | c->tmps_stack = PL_tmps_stack; |
383 | c->tmps_floor = PL_tmps_floor; |
462 | c->tmps_floor = PL_tmps_floor; |
384 | c->tmps_ix = PL_tmps_ix; |
463 | c->tmps_ix = PL_tmps_ix; |
… | |
… | |
394 | c->savestack_max = PL_savestack_max; |
473 | c->savestack_max = PL_savestack_max; |
395 | c->retstack = PL_retstack; |
474 | c->retstack = PL_retstack; |
396 | c->retstack_ix = PL_retstack_ix; |
475 | c->retstack_ix = PL_retstack_ix; |
397 | c->retstack_max = PL_retstack_max; |
476 | c->retstack_max = PL_retstack_max; |
398 | c->curcop = PL_curcop; |
477 | c->curcop = PL_curcop; |
|
|
478 | c->top_env = PL_top_env; |
|
|
479 | } |
|
|
480 | |
|
|
481 | /* |
|
|
482 | * allocate various perl stacks. This is an exact copy |
|
|
483 | * of perl.c:init_stacks, except that it uses less memory |
|
|
484 | * on the (sometimes correct) assumption that coroutines do |
|
|
485 | * not usually need a lot of stackspace. |
|
|
486 | */ |
|
|
487 | STATIC void |
|
|
488 | coro_init_stacks (pTHX) |
|
|
489 | { |
|
|
490 | LOCK; |
|
|
491 | |
|
|
492 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
|
|
493 | PL_curstackinfo->si_type = PERLSI_MAIN; |
|
|
494 | PL_curstack = PL_curstackinfo->si_stack; |
|
|
495 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
|
|
496 | |
|
|
497 | PL_stack_base = AvARRAY(PL_curstack); |
|
|
498 | PL_stack_sp = PL_stack_base; |
|
|
499 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
|
|
500 | |
|
|
501 | New(50,PL_tmps_stack,96,SV*); |
|
|
502 | PL_tmps_floor = -1; |
|
|
503 | PL_tmps_ix = -1; |
|
|
504 | PL_tmps_max = 96; |
|
|
505 | |
|
|
506 | New(54,PL_markstack,16,I32); |
|
|
507 | PL_markstack_ptr = PL_markstack; |
|
|
508 | PL_markstack_max = PL_markstack + 16; |
|
|
509 | |
|
|
510 | #ifdef SET_MARK_OFFSET |
|
|
511 | SET_MARK_OFFSET; |
|
|
512 | #endif |
|
|
513 | |
|
|
514 | New(54,PL_scopestack,16,I32); |
|
|
515 | PL_scopestack_ix = 0; |
|
|
516 | PL_scopestack_max = 16; |
|
|
517 | |
|
|
518 | New(54,PL_savestack,96,ANY); |
|
|
519 | PL_savestack_ix = 0; |
|
|
520 | PL_savestack_max = 96; |
|
|
521 | |
|
|
522 | New(54,PL_retstack,8,OP*); |
|
|
523 | PL_retstack_ix = 0; |
|
|
524 | PL_retstack_max = 8; |
|
|
525 | |
|
|
526 | UNLOCK; |
399 | } |
527 | } |
400 | |
528 | |
401 | /* |
529 | /* |
402 | * destroy the stacks, the callchain etc... |
530 | * destroy the stacks, the callchain etc... |
403 | * still there is a memleak of 128 bytes... |
|
|
404 | */ |
531 | */ |
405 | STATIC void |
532 | STATIC void |
406 | destroy_stacks(pTHX) |
533 | destroy_stacks(pTHX) |
407 | { |
534 | { |
|
|
535 | if (!IN_DESTRUCT) |
|
|
536 | { |
408 | /* is this ugly, I ask? */ |
537 | /* is this ugly, I ask? */ |
409 | while (PL_scopestack_ix) |
538 | LEAVE_SCOPE (0); |
410 | LEAVE; |
|
|
411 | |
539 | |
412 | /* sure it is, but more important: is it correct?? :/ */ |
540 | /* sure it is, but more important: is it correct?? :/ */ |
413 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
|
|
414 | FREETMPS; |
541 | FREETMPS; |
|
|
542 | |
|
|
543 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
|
|
544 | } |
415 | |
545 | |
416 | while (PL_curstackinfo->si_next) |
546 | while (PL_curstackinfo->si_next) |
417 | PL_curstackinfo = PL_curstackinfo->si_next; |
547 | PL_curstackinfo = PL_curstackinfo->si_next; |
418 | |
548 | |
419 | while (PL_curstackinfo) |
549 | while (PL_curstackinfo) |
420 | { |
550 | { |
421 | PERL_SI *p = PL_curstackinfo->si_prev; |
551 | PERL_SI *p = PL_curstackinfo->si_prev; |
422 | |
552 | |
423 | { |
553 | { /*D*//*remove*/ |
424 | dSP; |
554 | dSP; |
425 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
555 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
426 | PUTBACK; /* possibly superfluous */ |
556 | PUTBACK; /* possibly superfluous */ |
427 | } |
557 | } |
428 | |
558 | |
429 | dounwind(-1); |
559 | if (!IN_DESTRUCT) |
430 | |
560 | { |
|
|
561 | dounwind (-1);/*D*//*remove*/ |
431 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
562 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
|
|
563 | } |
|
|
564 | |
432 | Safefree(PL_curstackinfo->si_cxstack); |
565 | Safefree (PL_curstackinfo->si_cxstack); |
433 | Safefree(PL_curstackinfo); |
566 | Safefree (PL_curstackinfo); |
434 | PL_curstackinfo = p; |
567 | PL_curstackinfo = p; |
435 | } |
568 | } |
436 | |
569 | |
437 | Safefree(PL_tmps_stack); |
570 | Safefree (PL_tmps_stack); |
438 | Safefree(PL_markstack); |
571 | Safefree (PL_markstack); |
439 | Safefree(PL_scopestack); |
572 | Safefree (PL_scopestack); |
440 | Safefree(PL_savestack); |
573 | Safefree (PL_savestack); |
441 | Safefree(PL_retstack); |
574 | Safefree (PL_retstack); |
|
|
575 | } |
|
|
576 | |
|
|
577 | static void |
|
|
578 | allocate_stack (Coro__State ctx, int alloc) |
|
|
579 | { |
|
|
580 | coro_stack *stack; |
|
|
581 | |
|
|
582 | New (0, stack, 1, coro_stack); |
|
|
583 | |
|
|
584 | stack->refcnt = 1; |
|
|
585 | stack->usecnt = 1; |
|
|
586 | stack->gencnt = ctx->gencnt = 0; |
|
|
587 | |
|
|
588 | if (alloc) |
|
|
589 | { |
|
|
590 | #if HAVE_MMAP |
|
|
591 | stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
592 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
593 | if (stack->sptr == (void *)-1) |
|
|
594 | #endif |
|
|
595 | { |
|
|
596 | /*FIXME*//*D*//* reasonable stack size! */ |
|
|
597 | stack->ssize = - (8192 * sizeof (long)); |
|
|
598 | New (0, stack->sptr, 8192, long); |
|
|
599 | } |
|
|
600 | } |
|
|
601 | else |
|
|
602 | stack->sptr = 0; |
|
|
603 | |
|
|
604 | ctx->stack = stack; |
|
|
605 | } |
|
|
606 | |
|
|
607 | static void |
|
|
608 | deallocate_stack (Coro__State ctx) |
|
|
609 | { |
|
|
610 | coro_stack *stack = ctx->stack; |
|
|
611 | |
|
|
612 | ctx->stack = 0; |
|
|
613 | |
|
|
614 | if (stack) |
|
|
615 | { |
|
|
616 | if (!--stack->refcnt) |
|
|
617 | { |
|
|
618 | #ifdef HAVE_MMAP |
|
|
619 | if (stack->ssize > 0 && stack->sptr) |
|
|
620 | munmap (stack->sptr, stack->ssize); |
|
|
621 | else |
|
|
622 | #endif |
|
|
623 | Safefree (stack->sptr); |
|
|
624 | |
|
|
625 | Safefree (stack); |
|
|
626 | } |
|
|
627 | else if (ctx->gencnt == stack->gencnt) |
|
|
628 | --stack->usecnt; |
|
|
629 | } |
|
|
630 | } |
|
|
631 | |
|
|
632 | static void |
|
|
633 | setup_coro (void *arg) |
|
|
634 | { |
|
|
635 | /* |
|
|
636 | * emulate part of the perl startup here. |
|
|
637 | */ |
|
|
638 | dTHX; |
|
|
639 | dSP; |
|
|
640 | Coro__State ctx = (Coro__State)arg; |
|
|
641 | SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE); |
|
|
642 | |
|
|
643 | coro_init_stacks (aTHX); |
|
|
644 | /*PL_curcop = 0;*/ |
|
|
645 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
|
|
646 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
647 | GvAV (PL_defgv) = ctx->args; ctx->args = 0; |
|
|
648 | |
|
|
649 | SPAGAIN; |
|
|
650 | |
|
|
651 | if (ctx->stack) |
|
|
652 | { |
|
|
653 | ctx->cursp = 0; |
|
|
654 | |
|
|
655 | PUSHMARK(SP); |
|
|
656 | PUTBACK; |
|
|
657 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
658 | |
|
|
659 | if (SvTRUE (ERRSV)) |
|
|
660 | croak (NULL); |
|
|
661 | else |
|
|
662 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
663 | } |
|
|
664 | else |
|
|
665 | { |
|
|
666 | UNOP myop; |
|
|
667 | |
|
|
668 | PL_op = (OP *)&myop; |
|
|
669 | |
|
|
670 | Zero(&myop, 1, UNOP); |
|
|
671 | myop.op_next = Nullop; |
|
|
672 | myop.op_flags = OPf_WANT_VOID; |
|
|
673 | |
|
|
674 | PUSHMARK(SP); |
|
|
675 | XPUSHs (sub_init); |
|
|
676 | /* |
|
|
677 | * the next line is slightly wrong, as PL_op->op_next |
|
|
678 | * is actually being executed so we skip the first op. |
|
|
679 | * that doesn't matter, though, since it is only |
|
|
680 | * pp_nextstate and we never return... |
|
|
681 | * ah yes, and I don't care anyways ;) |
|
|
682 | */ |
|
|
683 | PUTBACK; |
|
|
684 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
685 | SPAGAIN; |
|
|
686 | |
|
|
687 | ENTER; /* necessary e.g. for dounwind */ |
|
|
688 | } |
|
|
689 | } |
|
|
690 | |
|
|
691 | static void |
|
|
692 | continue_coro (void *arg) |
|
|
693 | { |
|
|
694 | /* |
|
|
695 | * this is a _very_ stripped down perl interpreter ;) |
|
|
696 | */ |
|
|
697 | dTHX; |
|
|
698 | Coro__State ctx = (Coro__State)arg; |
|
|
699 | JMPENV coro_start_env; |
|
|
700 | |
|
|
701 | PL_top_env = &ctx->start_env; |
|
|
702 | |
|
|
703 | ctx->cursp = 0; |
|
|
704 | PL_op = PL_op->op_next; |
|
|
705 | CALLRUNOPS(aTHX); |
|
|
706 | |
|
|
707 | abort (); |
442 | } |
708 | } |
443 | |
709 | |
444 | STATIC void |
710 | STATIC void |
445 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
711 | transfer (pTHX_ struct coro *prev, struct coro *next, int flags) |
446 | { |
712 | { |
447 | dSP; |
713 | dSTACKLEVEL; |
448 | |
714 | |
449 | if (prev != next) |
715 | if (prev != next) |
450 | { |
716 | { |
451 | /* |
|
|
452 | * this could be done in newprocess which would lead to |
|
|
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) |
717 | if (next->mainstack) |
458 | { |
718 | { |
|
|
719 | LOCK; |
459 | SAVE (prev, flags); |
720 | SAVE (prev, flags); |
460 | LOAD (next); |
721 | LOAD (next); |
|
|
722 | UNLOCK; |
|
|
723 | |
461 | /* mark this state as in-use */ |
724 | /* mark this state as in-use */ |
462 | next->mainstack = 0; |
725 | next->mainstack = 0; |
463 | next->tmps_ix = -2; |
726 | next->tmps_ix = -2; |
|
|
727 | |
|
|
728 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
729 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
730 | { |
|
|
731 | if (!prev->stack) |
|
|
732 | allocate_stack (prev, 0); |
|
|
733 | else if (prev->cursp != stacklevel |
|
|
734 | && prev->stack->usecnt > 1) |
|
|
735 | { |
|
|
736 | prev->gencnt = ++prev->stack->gencnt; |
|
|
737 | prev->stack->usecnt = 1; |
|
|
738 | } |
|
|
739 | |
|
|
740 | /* has our stack been invalidated? */ |
|
|
741 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
742 | { |
|
|
743 | deallocate_stack (next); |
|
|
744 | allocate_stack (next, 1); |
|
|
745 | coro_create (&(next->stack->cctx), |
|
|
746 | continue_coro, (void *)next, |
|
|
747 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
748 | } |
|
|
749 | |
|
|
750 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
751 | prev->cursp = stacklevel; |
|
|
752 | /* don't add any code here */ |
|
|
753 | } |
|
|
754 | else |
|
|
755 | next->cursp = stacklevel; |
464 | } |
756 | } |
465 | else if (next->tmps_ix == -2) |
757 | else if (next->tmps_ix == -2) |
466 | { |
|
|
467 | croak ("tried to transfer to running coroutine"); |
758 | croak ("tried to transfer to running coroutine"); |
468 | } |
|
|
469 | else |
759 | else |
470 | { |
760 | { |
471 | /* |
761 | LOCK; |
472 | * emulate part of the perl startup here. |
|
|
473 | */ |
|
|
474 | UNOP myop; |
|
|
475 | |
|
|
476 | SAVE (prev, -1); /* first get rid of the old state */ |
762 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
763 | UNLOCK; |
477 | |
764 | |
478 | init_stacks (); /* from perl.c */ |
765 | 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 | */ |
766 | { |
499 | PUTBACK; |
767 | if (!prev->stack) |
500 | PL_op = pp_entersub(aTHX); |
768 | allocate_stack (prev, 0); |
501 | SPAGAIN; |
|
|
502 | |
769 | |
503 | ENTER; /* necessary e.g. for dounwind */ |
770 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
771 | { |
|
|
772 | PL_top_env = &next->start_env; |
|
|
773 | |
|
|
774 | setup_coro (next); |
|
|
775 | next->cursp = stacklevel; |
|
|
776 | |
|
|
777 | prev->stack->refcnt++; |
|
|
778 | prev->stack->usecnt++; |
|
|
779 | next->stack = prev->stack; |
|
|
780 | next->gencnt = prev->gencnt; |
|
|
781 | } |
|
|
782 | else |
|
|
783 | { |
|
|
784 | assert (!next->stack); |
|
|
785 | allocate_stack (next, 1); |
|
|
786 | coro_create (&(next->stack->cctx), |
|
|
787 | setup_coro, (void *)next, |
|
|
788 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
789 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
790 | prev->cursp = stacklevel; |
|
|
791 | /* don't add any code here */ |
|
|
792 | } |
|
|
793 | } |
|
|
794 | else |
|
|
795 | { |
|
|
796 | setup_coro (next); |
|
|
797 | next->cursp = stacklevel; |
|
|
798 | } |
504 | } |
799 | } |
505 | } |
800 | } |
|
|
801 | |
|
|
802 | LOCK; |
|
|
803 | if (coro_mortal) |
|
|
804 | { |
|
|
805 | SvREFCNT_dec (coro_mortal); |
|
|
806 | coro_mortal = 0; |
|
|
807 | } |
|
|
808 | UNLOCK; |
|
|
809 | } |
|
|
810 | |
|
|
811 | #define SV_CORO(sv,func) \ |
|
|
812 | do { \ |
|
|
813 | if (SvROK (sv)) \ |
|
|
814 | sv = SvRV (sv); \ |
|
|
815 | \ |
|
|
816 | if (SvTYPE (sv) == SVt_PVHV) \ |
|
|
817 | { \ |
|
|
818 | HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
819 | \ |
|
|
820 | if (!he) \ |
|
|
821 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
822 | \ |
|
|
823 | (sv) = SvRV (HeVAL(he)); \ |
|
|
824 | } \ |
|
|
825 | \ |
|
|
826 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
827 | if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \ |
|
|
828 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
829 | \ |
|
|
830 | } while(0) |
|
|
831 | |
|
|
832 | #define SvSTATE(sv) (struct coro *)SvIV (sv) |
|
|
833 | |
|
|
834 | static void |
|
|
835 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
|
|
836 | { |
|
|
837 | SV_CORO (prev, "Coro::transfer"); |
|
|
838 | SV_CORO (next, "Coro::transfer"); |
|
|
839 | |
|
|
840 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
|
|
841 | } |
|
|
842 | |
|
|
843 | /** Coro ********************************************************************/ |
|
|
844 | |
|
|
845 | #define PRIO_MAX 3 |
|
|
846 | #define PRIO_HIGH 1 |
|
|
847 | #define PRIO_NORMAL 0 |
|
|
848 | #define PRIO_LOW -1 |
|
|
849 | #define PRIO_IDLE -3 |
|
|
850 | #define PRIO_MIN -4 |
|
|
851 | |
|
|
852 | /* for Coro.pm */ |
|
|
853 | static GV *coro_current, *coro_idle; |
|
|
854 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
|
|
855 | static int coro_nready; |
|
|
856 | |
|
|
857 | static void |
|
|
858 | coro_enq (pTHX_ SV *sv) |
|
|
859 | { |
|
|
860 | if (SvTYPE (sv) == SVt_PVHV) |
|
|
861 | { |
|
|
862 | SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
863 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
864 | |
|
|
865 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
866 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
867 | : prio; |
|
|
868 | |
|
|
869 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
870 | coro_nready++; |
|
|
871 | |
|
|
872 | return; |
|
|
873 | } |
|
|
874 | |
|
|
875 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
876 | } |
|
|
877 | |
|
|
878 | static SV * |
|
|
879 | coro_deq (pTHX_ int min_prio) |
|
|
880 | { |
|
|
881 | int prio = PRIO_MAX - PRIO_MIN; |
|
|
882 | |
|
|
883 | min_prio -= PRIO_MIN; |
|
|
884 | if (min_prio < 0) |
|
|
885 | min_prio = 0; |
|
|
886 | |
|
|
887 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
|
|
888 | if (av_len (coro_ready[prio]) >= 0) |
|
|
889 | { |
|
|
890 | coro_nready--; |
|
|
891 | return av_shift (coro_ready[prio]); |
|
|
892 | } |
|
|
893 | |
|
|
894 | return 0; |
|
|
895 | } |
|
|
896 | |
|
|
897 | static void |
|
|
898 | api_ready (SV *coro) |
|
|
899 | { |
|
|
900 | dTHX; |
|
|
901 | |
|
|
902 | if (SvROK (coro)) |
|
|
903 | coro = SvRV (coro); |
|
|
904 | |
|
|
905 | LOCK; |
|
|
906 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
|
|
907 | UNLOCK; |
|
|
908 | } |
|
|
909 | |
|
|
910 | static void |
|
|
911 | api_schedule (void) |
|
|
912 | { |
|
|
913 | dTHX; |
|
|
914 | |
|
|
915 | SV *prev, *next; |
|
|
916 | |
|
|
917 | LOCK; |
|
|
918 | |
|
|
919 | prev = SvRV (GvSV (coro_current)); |
|
|
920 | next = coro_deq (aTHX_ PRIO_MIN); |
|
|
921 | |
|
|
922 | if (!next) |
|
|
923 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
|
|
924 | |
|
|
925 | /* free this only after the transfer */ |
|
|
926 | coro_mortal = prev; |
|
|
927 | SV_CORO (prev, "Coro::schedule"); |
|
|
928 | |
|
|
929 | SvRV (GvSV (coro_current)) = next; |
|
|
930 | |
|
|
931 | SV_CORO (next, "Coro::schedule"); |
|
|
932 | |
|
|
933 | UNLOCK; |
|
|
934 | |
|
|
935 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
|
|
936 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
937 | } |
|
|
938 | |
|
|
939 | static void |
|
|
940 | api_cede (void) |
|
|
941 | { |
|
|
942 | dTHX; |
|
|
943 | |
|
|
944 | LOCK; |
|
|
945 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
946 | UNLOCK; |
|
|
947 | |
|
|
948 | api_schedule (); |
506 | } |
949 | } |
507 | |
950 | |
508 | MODULE = Coro::State PACKAGE = Coro::State |
951 | MODULE = Coro::State PACKAGE = Coro::State |
509 | |
952 | |
510 | PROTOTYPES: ENABLE |
953 | PROTOTYPES: ENABLE |
511 | |
954 | |
512 | BOOT: |
955 | BOOT: |
|
|
956 | { /* {} necessary for stoopid perl-5.6.x */ |
|
|
957 | #ifdef USE_ITHREADS |
|
|
958 | MUTEX_INIT (&coro_mutex); |
|
|
959 | #endif |
|
|
960 | |
|
|
961 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
|
|
962 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
513 | HV * stash = gv_stashpvn("Coro::State", 10, TRUE); |
963 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
514 | |
964 | |
515 | newCONSTSUB (stash, "SAVE_DEFAV", newSViv (SAVE_DEFAV)); |
965 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
516 | newCONSTSUB (stash, "SAVE_DEFSV", newSViv (SAVE_DEFSV)); |
966 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
517 | newCONSTSUB (stash, "SAVE_ERRSV", newSViv (SAVE_ERRSV)); |
967 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
|
|
968 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
518 | |
969 | |
519 | if (!padlist_cache) |
970 | main_mainstack = PL_mainstack; |
520 | padlist_cache = newHV (); |
971 | |
|
|
972 | coroapi.ver = CORO_API_VERSION; |
|
|
973 | coroapi.transfer = api_transfer; |
|
|
974 | } |
521 | |
975 | |
522 | Coro::State |
976 | Coro::State |
523 | _newprocess(args) |
977 | _newprocess(args) |
524 | SV * args |
978 | SV * args |
525 | PROTOTYPE: $ |
979 | PROTOTYPE: $ |
… | |
… | |
527 | Coro__State coro; |
981 | Coro__State coro; |
528 | |
982 | |
529 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
983 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
530 | croak ("Coro::State::_newprocess expects an arrayref"); |
984 | croak ("Coro::State::_newprocess expects an arrayref"); |
531 | |
985 | |
532 | New (0, coro, 1, struct coro); |
986 | Newz (0, coro, 1, struct coro); |
533 | |
987 | |
534 | coro->mainstack = 0; /* actual work is done inside transfer */ |
|
|
535 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
988 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
|
|
989 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
|
|
990 | /*coro->stack = 0;*/ |
|
|
991 | |
|
|
992 | /* same as JMPENV_BOOTSTRAP */ |
|
|
993 | /* we might be able to recycle start_env, but safe is safe */ |
|
|
994 | /*Zero(&coro->start_env, 1, JMPENV);*/ |
|
|
995 | coro->start_env.je_ret = -1; |
|
|
996 | coro->start_env.je_mustcatch = TRUE; |
536 | |
997 | |
537 | RETVAL = coro; |
998 | RETVAL = coro; |
538 | OUTPUT: |
999 | OUTPUT: |
539 | RETVAL |
1000 | RETVAL |
540 | |
1001 | |
541 | void |
1002 | void |
542 | transfer(prev, next, flags = SAVE_DEFAV) |
1003 | transfer(prev, next, flags) |
543 | Coro::State_or_hashref prev |
1004 | SV *prev |
544 | Coro::State_or_hashref next |
1005 | SV *next |
545 | int flags |
1006 | int flags |
546 | PROTOTYPE: @ |
1007 | PROTOTYPE: @ |
547 | CODE: |
1008 | CODE: |
548 | |
1009 | PUTBACK; |
|
|
1010 | SV_CORO (next, "Coro::transfer"); |
|
|
1011 | SV_CORO (prev, "Coro::transfer"); |
549 | transfer (aTHX_ prev, next, flags); |
1012 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
|
|
1013 | SPAGAIN; |
550 | |
1014 | |
551 | void |
1015 | void |
552 | DESTROY(coro) |
1016 | DESTROY(coro) |
553 | Coro::State coro |
1017 | Coro::State coro |
554 | CODE: |
1018 | CODE: |
555 | |
1019 | |
556 | if (coro->mainstack) |
1020 | if (coro->mainstack && coro->mainstack != main_mainstack) |
557 | { |
1021 | { |
558 | struct coro temp; |
1022 | struct coro temp; |
559 | |
1023 | |
|
|
1024 | PUTBACK; |
560 | SAVE(aTHX_ (&temp), SAVE_ALL); |
1025 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
561 | LOAD(aTHX_ coro); |
1026 | LOAD (aTHX_ coro); |
|
|
1027 | SPAGAIN; |
562 | |
1028 | |
563 | destroy_stacks (); |
1029 | destroy_stacks (aTHX); |
564 | |
1030 | |
565 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
1031 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
1032 | SPAGAIN; |
|
|
1033 | |
|
|
1034 | coro->mainstack = 0; |
566 | } |
1035 | } |
567 | |
1036 | |
|
|
1037 | deallocate_stack (coro); |
|
|
1038 | SvREFCNT_dec (coro->args); |
568 | Safefree (coro); |
1039 | Safefree (coro); |
569 | |
1040 | |
570 | void |
1041 | void |
571 | flush() |
1042 | _exit(code) |
|
|
1043 | int code |
|
|
1044 | PROTOTYPE: $ |
572 | CODE: |
1045 | CODE: |
573 | #ifdef MAY_FLUSH |
1046 | _exit (code); |
574 | flush_padlist_cache (); |
|
|
575 | #endif |
|
|
576 | |
1047 | |
577 | MODULE = Coro::State PACKAGE = Coro::Cont |
1048 | MODULE = Coro::State PACKAGE = Coro::Cont |
578 | |
1049 | |
579 | # this is dirty and should be in it's own .xs |
1050 | # this is slightly dirty (should expose a c-level api) |
580 | |
1051 | |
581 | void |
1052 | void |
582 | result(...) |
1053 | yield(...) |
583 | PROTOTYPE: @ |
1054 | PROTOTYPE: @ |
584 | CODE: |
1055 | CODE: |
585 | static SV *returnstk; |
1056 | SV *yieldstack; |
586 | SV *sv; |
1057 | SV *sv; |
587 | AV *defav = GvAV (PL_defgv); |
1058 | AV *defav = GvAV (PL_defgv); |
588 | struct coro *prev, *next; |
1059 | struct coro *prev, *next; |
589 | |
1060 | |
590 | if (!returnstk) |
1061 | yieldstack = *hv_fetch ( |
591 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
1062 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1063 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1064 | 0 |
|
|
1065 | ); |
592 | |
1066 | |
593 | /* set up @_ */ |
1067 | /* set up @_ -- ugly */ |
594 | av_clear (defav); |
1068 | av_clear (defav); |
595 | av_fill (defav, items - 1); |
1069 | av_fill (defav, items - 1); |
596 | while (items--) |
1070 | while (items--) |
597 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
1071 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
598 | |
1072 | |
599 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
600 | sv = av_pop ((AV *)SvRV (returnstk)); |
1073 | sv = av_pop ((AV *)SvRV (yieldstack)); |
601 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
1074 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
602 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
1075 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
603 | SvREFCNT_dec (sv); |
1076 | SvREFCNT_dec (sv); |
|
|
1077 | |
604 | transfer(prev, next, 0); |
1078 | transfer (aTHX_ prev, next, 0); |
605 | |
1079 | |
|
|
1080 | MODULE = Coro::State PACKAGE = Coro |
|
|
1081 | |
|
|
1082 | # this is slightly dirty (should expose a c-level api) |
|
|
1083 | |
|
|
1084 | BOOT: |
|
|
1085 | { |
|
|
1086 | int i; |
|
|
1087 | HV *stash = gv_stashpv ("Coro", TRUE); |
|
|
1088 | |
|
|
1089 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
|
|
1090 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
|
|
1091 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
|
|
1092 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
|
|
1093 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
|
|
1094 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
|
|
1095 | |
|
|
1096 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1097 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1098 | |
|
|
1099 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
|
|
1100 | coro_ready[i] = newAV (); |
|
|
1101 | |
|
|
1102 | { |
|
|
1103 | SV *sv = perl_get_sv("Coro::API", 1); |
|
|
1104 | |
|
|
1105 | coroapi.schedule = api_schedule; |
|
|
1106 | coroapi.cede = api_cede; |
|
|
1107 | coroapi.ready = api_ready; |
|
|
1108 | coroapi.nready = &coro_nready; |
|
|
1109 | coroapi.current = coro_current; |
|
|
1110 | |
|
|
1111 | GCoroAPI = &coroapi; |
|
|
1112 | sv_setiv(sv, (IV)&coroapi); |
|
|
1113 | SvREADONLY_on(sv); |
|
|
1114 | } |
|
|
1115 | } |
|
|
1116 | |
|
|
1117 | #if !PERL_MICRO |
|
|
1118 | |
|
|
1119 | void |
|
|
1120 | ready(self) |
|
|
1121 | SV * self |
|
|
1122 | PROTOTYPE: $ |
|
|
1123 | CODE: |
|
|
1124 | api_ready (self); |
|
|
1125 | |
|
|
1126 | #endif |
|
|
1127 | |
|
|
1128 | int |
|
|
1129 | nready(...) |
|
|
1130 | PROTOTYPE: |
|
|
1131 | CODE: |
|
|
1132 | RETVAL = coro_nready; |
|
|
1133 | OUTPUT: |
|
|
1134 | RETVAL |
|
|
1135 | |
|
|
1136 | void |
|
|
1137 | schedule(...) |
|
|
1138 | PROTOTYPE: |
|
|
1139 | CODE: |
|
|
1140 | api_schedule (); |
|
|
1141 | |
|
|
1142 | void |
|
|
1143 | cede(...) |
|
|
1144 | PROTOTYPE: |
|
|
1145 | CODE: |
|
|
1146 | api_cede (); |
|
|
1147 | |