|
|
1 | #include "libcoro/coro.c" |
|
|
2 | |
1 | #include "EXTERN.h" |
3 | #include "EXTERN.h" |
2 | #include "perl.h" |
4 | #include "perl.h" |
3 | #include "XSUB.h" |
5 | #include "XSUB.h" |
4 | |
6 | |
5 | #include "libcoro/coro.c" |
7 | #include "patchlevel.h" |
6 | |
8 | |
|
|
9 | #if PERL_VERSION < 6 |
|
|
10 | # ifndef PL_ppaddr |
|
|
11 | # define PL_ppaddr ppaddr |
|
|
12 | # endif |
|
|
13 | # ifndef call_sv |
|
|
14 | # define call_sv perl_call_sv |
|
|
15 | # endif |
|
|
16 | # ifndef get_sv |
|
|
17 | # define get_sv perl_get_sv |
|
|
18 | # endif |
|
|
19 | # ifndef get_cv |
|
|
20 | # define get_cv perl_get_cv |
|
|
21 | # endif |
|
|
22 | # ifndef IS_PADGV |
|
|
23 | # define IS_PADGV(v) 0 |
|
|
24 | # endif |
|
|
25 | # ifndef IS_PADCONST |
|
|
26 | # define IS_PADCONST(v) 0 |
|
|
27 | # endif |
|
|
28 | #endif |
|
|
29 | |
7 | #include <signal.h> |
30 | #include <stdio.h> |
|
|
31 | #include <errno.h> |
|
|
32 | |
|
|
33 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
|
|
34 | # undef STACKGUARD |
|
|
35 | #endif |
|
|
36 | |
|
|
37 | #ifndef STACKGUARD |
|
|
38 | # define STACKGUARD 0 |
|
|
39 | #endif |
8 | |
40 | |
9 | #ifdef HAVE_MMAP |
41 | #ifdef HAVE_MMAP |
10 | # include <unistd.h> |
42 | # include <unistd.h> |
11 | # include <sys/mman.h> |
43 | # include <sys/mman.h> |
12 | # ifndef MAP_ANONYMOUS |
44 | # ifndef MAP_ANONYMOUS |
… | |
… | |
14 | # define MAP_ANONYMOUS MAP_ANON |
46 | # define MAP_ANONYMOUS MAP_ANON |
15 | # else |
47 | # else |
16 | # undef HAVE_MMAP |
48 | # undef HAVE_MMAP |
17 | # endif |
49 | # endif |
18 | # endif |
50 | # endif |
|
|
51 | # include <limits.h> |
|
|
52 | # ifndef PAGESIZE |
|
|
53 | # define PAGESIZE pagesize |
|
|
54 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
|
|
55 | static long pagesize; |
|
|
56 | # else |
|
|
57 | # define BOOT_PAGESIZE |
19 | #endif |
58 | # endif |
20 | |
59 | #endif |
21 | #define MAY_FLUSH /* increases codesize and is rarely used */ |
|
|
22 | |
|
|
23 | #define SUB_INIT "Coro::State::initialize" |
|
|
24 | #define UCORO_STATE "_coro_state" |
|
|
25 | |
60 | |
26 | /* The next macro should declare a variable stacklevel that contains and approximation |
61 | /* The next macro should declare a variable stacklevel that contains and approximation |
27 | * to the current C stack pointer. Its property is that it changes with each call |
62 | * to the current C stack pointer. Its property is that it changes with each call |
28 | * and should be unique. */ |
63 | * and should be unique. */ |
|
|
64 | #define dSTACKLEVEL int stacklevel |
29 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
65 | #define STACKLEVEL ((void *)&stacklevel) |
30 | |
66 | |
31 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
67 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
32 | |
68 | |
33 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
|
|
34 | |
|
|
35 | #include "CoroAPI.h" |
69 | #include "CoroAPI.h" |
36 | |
70 | |
|
|
71 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
|
|
72 | |
|
|
73 | #ifdef USE_ITHREADS |
|
|
74 | static perl_mutex coro_mutex; |
|
|
75 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
|
|
76 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
|
|
77 | #else |
|
|
78 | # define LOCK (void)0 |
|
|
79 | # define UNLOCK (void)0 |
|
|
80 | #endif |
|
|
81 | |
37 | static struct CoroAPI coroapi; |
82 | static struct CoroAPI coroapi; |
|
|
83 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
|
|
84 | static HV *coro_state_stash, *coro_stash; |
|
|
85 | static SV *coro_mortal; /* will be freed after next transfer */ |
38 | |
86 | |
39 | /* this is actually not only the c stack but also c registers etc... */ |
87 | /* this is a structure representing a c-level coroutine */ |
40 | typedef struct { |
88 | typedef struct coro_stack { |
41 | int refcnt; /* pointer reference counter */ |
89 | struct coro_stack *next; |
42 | int usecnt; /* shared by how many coroutines */ |
|
|
43 | int gencnt; /* generation counter */ |
|
|
44 | |
90 | |
45 | coro_context cctx; |
91 | /* the stack */ |
46 | |
|
|
47 | void *sptr; |
92 | void *sptr; |
48 | long ssize; /* positive == mmap, otherwise malloc */ |
93 | long ssize; /* positive == mmap, otherwise malloc */ |
|
|
94 | |
|
|
95 | /* cpu state */ |
|
|
96 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
|
|
97 | JMPENV *top_env; |
|
|
98 | coro_context cctx; |
49 | } coro_stack; |
99 | } coro_stack; |
50 | |
100 | |
|
|
101 | /* this is a structure representing a perl-level coroutine */ |
51 | struct coro { |
102 | struct coro { |
52 | /* the optional C context */ |
103 | /* the c coroutine allocated to this perl coroutine, if any */ |
53 | coro_stack *stack; |
104 | coro_stack *stack; |
54 | void *cursp; |
105 | |
|
|
106 | /* data associated with this coroutine (initial args) */ |
|
|
107 | AV *args; |
55 | int gencnt; |
108 | int refcnt; |
56 | |
109 | |
57 | /* optionally saved, might be zero */ |
110 | /* optionally saved, might be zero */ |
58 | AV *defav; |
111 | AV *defav; |
59 | SV *defsv; |
112 | SV *defsv; |
60 | SV *errsv; |
113 | SV *errsv; |
61 | /* TODO: PL_pmop might be nice && effortless to save. */ |
|
|
62 | |
114 | |
63 | /* saved global state not related to stacks */ |
115 | /* saved global state not related to stacks */ |
64 | U8 dowarn; |
116 | U8 dowarn; |
65 | I32 in_eval; |
117 | I32 in_eval; |
66 | |
118 | |
… | |
… | |
69 | AV *curstack; |
121 | AV *curstack; |
70 | AV *mainstack; |
122 | AV *mainstack; |
71 | SV **stack_sp; |
123 | SV **stack_sp; |
72 | OP *op; |
124 | OP *op; |
73 | SV **curpad; |
125 | SV **curpad; |
|
|
126 | AV *comppad; |
|
|
127 | CV *compcv; |
74 | SV **stack_base; |
128 | SV **stack_base; |
75 | SV **stack_max; |
129 | SV **stack_max; |
76 | SV **tmps_stack; |
130 | SV **tmps_stack; |
77 | I32 tmps_floor; |
131 | I32 tmps_floor; |
78 | I32 tmps_ix; |
132 | I32 tmps_ix; |
… | |
… | |
87 | I32 savestack_ix; |
141 | I32 savestack_ix; |
88 | I32 savestack_max; |
142 | I32 savestack_max; |
89 | OP **retstack; |
143 | OP **retstack; |
90 | I32 retstack_ix; |
144 | I32 retstack_ix; |
91 | I32 retstack_max; |
145 | I32 retstack_max; |
|
|
146 | PMOP *curpm; |
92 | COP *curcop; |
147 | COP *curcop; |
93 | JMPENV *top_env; |
|
|
94 | |
148 | |
95 | /* data associated with this coroutine (initial args) */ |
149 | /* coro process data */ |
96 | AV *args; |
150 | int prio; |
97 | }; |
151 | }; |
98 | |
152 | |
99 | typedef struct coro *Coro__State; |
153 | typedef struct coro *Coro__State; |
100 | typedef struct coro *Coro__State_or_hashref; |
154 | typedef struct coro *Coro__State_or_hashref; |
101 | |
155 | |
102 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
156 | static AV * |
103 | static HV *coro_state_stash; |
157 | coro_clone_padlist (CV *cv) |
104 | static SV *ucoro_state_sv; |
|
|
105 | static U32 ucoro_state_hash; |
|
|
106 | static HV *padlist_cache; |
|
|
107 | |
|
|
108 | /* mostly copied from op.c:cv_clone2 */ |
|
|
109 | STATIC AV * |
|
|
110 | clone_padlist (AV *protopadlist) |
|
|
111 | { |
158 | { |
112 | AV *av; |
159 | AV *padlist = CvPADLIST (cv); |
113 | I32 ix; |
|
|
114 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
|
|
115 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
|
|
116 | SV **pname = AvARRAY (protopad_name); |
|
|
117 | SV **ppad = AvARRAY (protopad); |
|
|
118 | I32 fname = AvFILLp (protopad_name); |
|
|
119 | I32 fpad = AvFILLp (protopad); |
|
|
120 | AV *newpadlist, *newpad_name, *newpad; |
160 | AV *newpadlist, *newpad; |
121 | SV **npad; |
|
|
122 | |
|
|
123 | newpad_name = newAV (); |
|
|
124 | for (ix = fname; ix >= 0; ix--) |
|
|
125 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
|
|
126 | |
|
|
127 | newpad = newAV (); |
|
|
128 | av_fill (newpad, AvFILLp (protopad)); |
|
|
129 | npad = AvARRAY (newpad); |
|
|
130 | |
161 | |
131 | newpadlist = newAV (); |
162 | newpadlist = newAV (); |
132 | AvREAL_off (newpadlist); |
163 | AvREAL_off (newpadlist); |
133 | av_store (newpadlist, 0, (SV *) newpad_name); |
164 | #if PERL_VERSION < 9 |
|
|
165 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
|
|
166 | #else |
|
|
167 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
|
|
168 | #endif |
|
|
169 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
|
|
170 | --AvFILLp (padlist); |
|
|
171 | |
|
|
172 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
134 | av_store (newpadlist, 1, (SV *) newpad); |
173 | av_store (newpadlist, 1, (SV *)newpad); |
135 | |
174 | |
136 | av = newAV (); /* will be @_ */ |
175 | return newpadlist; |
137 | av_extend (av, 0); |
176 | } |
138 | av_store (newpad, 0, (SV *) av); |
|
|
139 | AvFLAGS (av) = AVf_REIFY; |
|
|
140 | |
177 | |
141 | for (ix = fpad; ix > 0; ix--) |
178 | static void |
|
|
179 | free_padlist (AV *padlist) |
|
|
180 | { |
|
|
181 | /* may be during global destruction */ |
|
|
182 | if (SvREFCNT (padlist)) |
142 | { |
183 | { |
143 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
184 | I32 i = AvFILLp (padlist); |
144 | if (namesv && namesv != &PL_sv_undef) |
185 | while (i >= 0) |
145 | { |
186 | { |
146 | char *name = SvPVX (namesv); /* XXX */ |
187 | SV **svp = av_fetch (padlist, i--, FALSE); |
147 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
188 | if (svp) |
148 | { /* lexical from outside? */ |
|
|
149 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
|
|
150 | } |
189 | { |
151 | else |
|
|
152 | { /* our own lexical */ |
|
|
153 | SV *sv; |
190 | SV *sv; |
154 | if (*name == '&') |
191 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
155 | sv = SvREFCNT_inc (ppad[ix]); |
192 | SvREFCNT_dec (sv); |
156 | else if (*name == '@') |
193 | |
157 | sv = (SV *) newAV (); |
194 | SvREFCNT_dec (*svp); |
158 | else if (*name == '%') |
|
|
159 | sv = (SV *) newHV (); |
|
|
160 | else |
|
|
161 | sv = NEWSV (0, 0); |
|
|
162 | if (!SvPADBUSY (sv)) |
|
|
163 | SvPADMY_on (sv); |
|
|
164 | npad[ix] = sv; |
|
|
165 | } |
195 | } |
166 | } |
196 | } |
167 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
197 | |
168 | { |
198 | SvREFCNT_dec ((SV*)padlist); |
169 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
|
|
170 | } |
|
|
171 | else |
|
|
172 | { |
|
|
173 | SV *sv = NEWSV (0, 0); |
|
|
174 | SvPADTMP_on (sv); |
|
|
175 | npad[ix] = sv; |
|
|
176 | } |
|
|
177 | } |
199 | } |
|
|
200 | } |
178 | |
201 | |
179 | #if 0 /* return -ENOTUNDERSTOOD */ |
202 | static int |
180 | /* Now that vars are all in place, clone nested closures. */ |
203 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
204 | { |
|
|
205 | AV *padlist; |
|
|
206 | AV *av = (AV *)mg->mg_obj; |
181 | |
207 | |
182 | for (ix = fpad; ix > 0; ix--) { |
208 | /* casting is fun. */ |
183 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
209 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
184 | if (namesv |
210 | free_padlist (padlist); |
185 | && namesv != &PL_sv_undef |
211 | |
186 | && !(SvFLAGS(namesv) & SVf_FAKE) |
212 | SvREFCNT_dec (av); |
187 | && *SvPVX(namesv) == '&' |
213 | |
188 | && CvCLONE(ppad[ix])) |
214 | return 0; |
189 | { |
215 | } |
190 | CV *kid = cv_clone((CV*)ppad[ix]); |
216 | |
191 | SvREFCNT_dec(ppad[ix]); |
217 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
192 | CvCLONE_on(kid); |
218 | |
193 | SvPADMY_on(kid); |
219 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
194 | npad[ix] = (SV*)kid; |
220 | |
195 | } |
221 | /* the next two functions merely cache the padlists */ |
|
|
222 | static void |
|
|
223 | get_padlist (CV *cv) |
|
|
224 | { |
|
|
225 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
|
|
226 | |
|
|
227 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
|
|
228 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
|
|
229 | else |
|
|
230 | { |
|
|
231 | #if 0 |
|
|
232 | /* this is probably cleaner, but also slower? */ |
|
|
233 | CV *cp = Perl_cv_clone (cv); |
|
|
234 | CvPADLIST (cv) = CvPADLIST (cp); |
|
|
235 | CvPADLIST (cp) = 0; |
|
|
236 | SvREFCNT_dec (cp); |
|
|
237 | #else |
|
|
238 | CvPADLIST (cv) = coro_clone_padlist (cv); |
|
|
239 | #endif |
|
|
240 | } |
|
|
241 | } |
|
|
242 | |
|
|
243 | static void |
|
|
244 | put_padlist (CV *cv) |
|
|
245 | { |
|
|
246 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
|
|
247 | |
|
|
248 | if (!mg) |
|
|
249 | { |
|
|
250 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
|
|
251 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
|
|
252 | mg->mg_virtual = &vtbl_coro; |
|
|
253 | mg->mg_obj = (SV *)newAV (); |
196 | } |
254 | } |
197 | #endif |
|
|
198 | |
255 | |
199 | return newpadlist; |
|
|
200 | } |
|
|
201 | |
|
|
202 | #ifdef MAY_FLUSH |
|
|
203 | STATIC void |
|
|
204 | free_padlist (AV *padlist) |
|
|
205 | { |
|
|
206 | /* may be during global destruction */ |
|
|
207 | if (SvREFCNT(padlist)) |
|
|
208 | { |
|
|
209 | I32 i = AvFILLp(padlist); |
|
|
210 | while (i >= 0) |
|
|
211 | { |
|
|
212 | SV **svp = av_fetch(padlist, i--, FALSE); |
|
|
213 | SV *sv = svp ? *svp : Nullsv; |
|
|
214 | if (sv) |
|
|
215 | SvREFCNT_dec(sv); |
|
|
216 | } |
|
|
217 | |
|
|
218 | SvREFCNT_dec((SV*)padlist); |
|
|
219 | } |
|
|
220 | } |
|
|
221 | #endif |
|
|
222 | |
|
|
223 | /* the next two functions merely cache the padlists */ |
|
|
224 | STATIC void |
|
|
225 | get_padlist (CV *cv) |
|
|
226 | { |
|
|
227 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
|
|
228 | |
|
|
229 | if (he && AvFILLp ((AV *)*he) >= 0) |
|
|
230 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
|
|
231 | else |
|
|
232 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
|
|
233 | } |
|
|
234 | |
|
|
235 | STATIC void |
|
|
236 | put_padlist (CV *cv) |
|
|
237 | { |
|
|
238 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
|
|
239 | |
|
|
240 | if (SvTYPE (*he) != SVt_PVAV) |
|
|
241 | { |
|
|
242 | SvREFCNT_dec (*he); |
|
|
243 | *he = (SV *)newAV (); |
|
|
244 | } |
|
|
245 | |
|
|
246 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
256 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
247 | } |
257 | } |
248 | |
|
|
249 | #ifdef MAY_FLUSH |
|
|
250 | STATIC void |
|
|
251 | flush_padlist_cache () |
|
|
252 | { |
|
|
253 | HV *hv = padlist_cache; |
|
|
254 | padlist_cache = newHV (); |
|
|
255 | |
|
|
256 | if (hv_iterinit (hv)) |
|
|
257 | { |
|
|
258 | HE *he; |
|
|
259 | AV *padlist; |
|
|
260 | |
|
|
261 | while (!!(he = hv_iternext (hv))) |
|
|
262 | { |
|
|
263 | AV *av = (AV *)HeVAL(he); |
|
|
264 | |
|
|
265 | /* casting is fun. */ |
|
|
266 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
|
|
267 | free_padlist (padlist); |
|
|
268 | } |
|
|
269 | } |
|
|
270 | |
|
|
271 | SvREFCNT_dec (hv); |
|
|
272 | } |
|
|
273 | #endif |
|
|
274 | |
258 | |
275 | #define SB do { |
259 | #define SB do { |
276 | #define SE } while (0) |
260 | #define SE } while (0) |
277 | |
261 | |
278 | #define LOAD(state) load_state(aTHX_ (state)); |
262 | #define LOAD(state) load_state((state)); |
279 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
263 | #define SAVE(state,flags) save_state((state),(flags)); |
280 | |
264 | |
281 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
265 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
282 | |
266 | |
283 | static void |
267 | static void |
284 | load_state(pTHX_ Coro__State c) |
268 | load_state(Coro__State c) |
285 | { |
269 | { |
286 | PL_dowarn = c->dowarn; |
270 | PL_dowarn = c->dowarn; |
287 | PL_in_eval = c->in_eval; |
271 | PL_in_eval = c->in_eval; |
288 | |
272 | |
289 | PL_curstackinfo = c->curstackinfo; |
273 | PL_curstackinfo = c->curstackinfo; |
290 | PL_curstack = c->curstack; |
274 | PL_curstack = c->curstack; |
291 | PL_mainstack = c->mainstack; |
275 | PL_mainstack = c->mainstack; |
292 | PL_stack_sp = c->stack_sp; |
276 | PL_stack_sp = c->stack_sp; |
293 | PL_op = c->op; |
277 | PL_op = c->op; |
294 | PL_curpad = c->curpad; |
278 | PL_curpad = c->curpad; |
|
|
279 | PL_comppad = c->comppad; |
|
|
280 | PL_compcv = c->compcv; |
295 | PL_stack_base = c->stack_base; |
281 | PL_stack_base = c->stack_base; |
296 | PL_stack_max = c->stack_max; |
282 | PL_stack_max = c->stack_max; |
297 | PL_tmps_stack = c->tmps_stack; |
283 | PL_tmps_stack = c->tmps_stack; |
298 | PL_tmps_floor = c->tmps_floor; |
284 | PL_tmps_floor = c->tmps_floor; |
299 | PL_tmps_ix = c->tmps_ix; |
285 | PL_tmps_ix = c->tmps_ix; |
… | |
… | |
305 | PL_scopestack_ix = c->scopestack_ix; |
291 | PL_scopestack_ix = c->scopestack_ix; |
306 | PL_scopestack_max = c->scopestack_max; |
292 | PL_scopestack_max = c->scopestack_max; |
307 | PL_savestack = c->savestack; |
293 | PL_savestack = c->savestack; |
308 | PL_savestack_ix = c->savestack_ix; |
294 | PL_savestack_ix = c->savestack_ix; |
309 | PL_savestack_max = c->savestack_max; |
295 | PL_savestack_max = c->savestack_max; |
|
|
296 | #if PERL_VERSION < 9 |
310 | PL_retstack = c->retstack; |
297 | PL_retstack = c->retstack; |
311 | PL_retstack_ix = c->retstack_ix; |
298 | PL_retstack_ix = c->retstack_ix; |
312 | PL_retstack_max = c->retstack_max; |
299 | PL_retstack_max = c->retstack_max; |
|
|
300 | #endif |
|
|
301 | PL_curpm = c->curpm; |
313 | PL_curcop = c->curcop; |
302 | PL_curcop = c->curcop; |
314 | PL_top_env = c->top_env; |
|
|
315 | |
303 | |
316 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
304 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
317 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
305 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
318 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
306 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
319 | |
307 | |
… | |
… | |
328 | |
316 | |
329 | if (padlist) |
317 | if (padlist) |
330 | { |
318 | { |
331 | put_padlist (cv); /* mark this padlist as available */ |
319 | put_padlist (cv); /* mark this padlist as available */ |
332 | CvPADLIST(cv) = padlist; |
320 | CvPADLIST(cv) = padlist; |
333 | #ifdef USE_THREADS |
|
|
334 | /*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
|
|
335 | #endif |
|
|
336 | } |
321 | } |
337 | |
322 | |
338 | ++CvDEPTH(cv); |
323 | ++CvDEPTH(cv); |
339 | } |
324 | } |
340 | |
325 | |
341 | PUTBACK; |
326 | PUTBACK; |
342 | } |
327 | } |
343 | } |
328 | } |
344 | |
329 | |
345 | static void |
330 | static void |
346 | save_state(pTHX_ Coro__State c, int flags) |
331 | save_state(Coro__State c, int flags) |
347 | { |
332 | { |
348 | { |
333 | { |
349 | dSP; |
334 | dSP; |
350 | I32 cxix = cxstack_ix; |
335 | I32 cxix = cxstack_ix; |
351 | PERL_CONTEXT *ccstk = cxstack; |
336 | PERL_CONTEXT *ccstk = cxstack; |
… | |
… | |
367 | if (CxTYPE(cx) == CXt_SUB) |
352 | if (CxTYPE(cx) == CXt_SUB) |
368 | { |
353 | { |
369 | CV *cv = cx->blk_sub.cv; |
354 | CV *cv = cx->blk_sub.cv; |
370 | if (CvDEPTH(cv)) |
355 | if (CvDEPTH(cv)) |
371 | { |
356 | { |
372 | #ifdef USE_THREADS |
|
|
373 | /*XPUSHs ((SV *)CvOWNER(cv));*/ |
|
|
374 | /*CvOWNER(cv) = 0;*/ |
|
|
375 | /*error must unlock this cv etc.. etc...*/ |
|
|
376 | #endif |
|
|
377 | EXTEND (SP, CvDEPTH(cv)*2); |
357 | EXTEND (SP, CvDEPTH(cv)*2); |
378 | |
358 | |
379 | while (--CvDEPTH(cv)) |
359 | while (--CvDEPTH(cv)) |
380 | { |
360 | { |
381 | /* this tells the restore code to increment CvDEPTH */ |
361 | /* this tells the restore code to increment CvDEPTH */ |
… | |
… | |
384 | } |
364 | } |
385 | |
365 | |
386 | PUSHs ((SV *)CvPADLIST(cv)); |
366 | PUSHs ((SV *)CvPADLIST(cv)); |
387 | PUSHs ((SV *)cv); |
367 | PUSHs ((SV *)cv); |
388 | |
368 | |
389 | get_padlist (cv); /* this is a monster */ |
369 | get_padlist (cv); |
390 | } |
370 | } |
391 | } |
371 | } |
|
|
372 | #ifdef CXt_FORMAT |
392 | else if (CxTYPE(cx) == CXt_FORMAT) |
373 | else if (CxTYPE(cx) == CXt_FORMAT) |
393 | { |
374 | { |
394 | /* I never used formats, so how should I know how these are implemented? */ |
375 | /* I never used formats, so how should I know how these are implemented? */ |
395 | /* my bold guess is as a simple, plain sub... */ |
376 | /* my bold guess is as a simple, plain sub... */ |
396 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
377 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
397 | } |
378 | } |
|
|
379 | #endif |
398 | } |
380 | } |
399 | |
381 | |
400 | if (top_si->si_type == PERLSI_MAIN) |
382 | if (top_si->si_type == PERLSI_MAIN) |
401 | break; |
383 | break; |
402 | |
384 | |
… | |
… | |
419 | c->curstack = PL_curstack; |
401 | c->curstack = PL_curstack; |
420 | c->mainstack = PL_mainstack; |
402 | c->mainstack = PL_mainstack; |
421 | c->stack_sp = PL_stack_sp; |
403 | c->stack_sp = PL_stack_sp; |
422 | c->op = PL_op; |
404 | c->op = PL_op; |
423 | c->curpad = PL_curpad; |
405 | c->curpad = PL_curpad; |
|
|
406 | c->comppad = PL_comppad; |
|
|
407 | c->compcv = PL_compcv; |
424 | c->stack_base = PL_stack_base; |
408 | c->stack_base = PL_stack_base; |
425 | c->stack_max = PL_stack_max; |
409 | c->stack_max = PL_stack_max; |
426 | c->tmps_stack = PL_tmps_stack; |
410 | c->tmps_stack = PL_tmps_stack; |
427 | c->tmps_floor = PL_tmps_floor; |
411 | c->tmps_floor = PL_tmps_floor; |
428 | c->tmps_ix = PL_tmps_ix; |
412 | c->tmps_ix = PL_tmps_ix; |
… | |
… | |
434 | c->scopestack_ix = PL_scopestack_ix; |
418 | c->scopestack_ix = PL_scopestack_ix; |
435 | c->scopestack_max = PL_scopestack_max; |
419 | c->scopestack_max = PL_scopestack_max; |
436 | c->savestack = PL_savestack; |
420 | c->savestack = PL_savestack; |
437 | c->savestack_ix = PL_savestack_ix; |
421 | c->savestack_ix = PL_savestack_ix; |
438 | c->savestack_max = PL_savestack_max; |
422 | c->savestack_max = PL_savestack_max; |
|
|
423 | #if PERL_VERSION < 9 |
439 | c->retstack = PL_retstack; |
424 | c->retstack = PL_retstack; |
440 | c->retstack_ix = PL_retstack_ix; |
425 | c->retstack_ix = PL_retstack_ix; |
441 | c->retstack_max = PL_retstack_max; |
426 | c->retstack_max = PL_retstack_max; |
|
|
427 | #endif |
|
|
428 | c->curpm = PL_curpm; |
442 | c->curcop = PL_curcop; |
429 | c->curcop = PL_curcop; |
443 | c->top_env = PL_top_env; |
|
|
444 | } |
430 | } |
445 | |
431 | |
446 | /* |
432 | /* |
447 | * allocate various perl stacks. This is an exact copy |
433 | * allocate various perl stacks. This is an exact copy |
448 | * of perl.c:init_stacks, except that it uses less memory |
434 | * of perl.c:init_stacks, except that it uses less memory |
449 | * on the assumption that coroutines do not usually need |
435 | * on the (sometimes correct) assumption that coroutines do |
450 | * a lot of stackspace. |
436 | * not usually need a lot of stackspace. |
451 | */ |
437 | */ |
452 | STATIC void |
438 | static void |
453 | coro_init_stacks (pTHX) |
439 | coro_init_stacks () |
454 | { |
440 | { |
|
|
441 | LOCK; |
|
|
442 | |
455 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
443 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
456 | PL_curstackinfo->si_type = PERLSI_MAIN; |
444 | PL_curstackinfo->si_type = PERLSI_MAIN; |
457 | PL_curstack = PL_curstackinfo->si_stack; |
445 | PL_curstack = PL_curstackinfo->si_stack; |
458 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
446 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
459 | |
447 | |
… | |
… | |
468 | |
456 | |
469 | New(54,PL_markstack,16,I32); |
457 | New(54,PL_markstack,16,I32); |
470 | PL_markstack_ptr = PL_markstack; |
458 | PL_markstack_ptr = PL_markstack; |
471 | PL_markstack_max = PL_markstack + 16; |
459 | PL_markstack_max = PL_markstack + 16; |
472 | |
460 | |
|
|
461 | #ifdef SET_MARK_OFFSET |
473 | SET_MARK_OFFSET; |
462 | SET_MARK_OFFSET; |
|
|
463 | #endif |
474 | |
464 | |
475 | New(54,PL_scopestack,16,I32); |
465 | New(54,PL_scopestack,16,I32); |
476 | PL_scopestack_ix = 0; |
466 | PL_scopestack_ix = 0; |
477 | PL_scopestack_max = 16; |
467 | PL_scopestack_max = 16; |
478 | |
468 | |
479 | New(54,PL_savestack,96,ANY); |
469 | New(54,PL_savestack,96,ANY); |
480 | PL_savestack_ix = 0; |
470 | PL_savestack_ix = 0; |
481 | PL_savestack_max = 96; |
471 | PL_savestack_max = 96; |
482 | |
472 | |
|
|
473 | #if PERL_VERSION < 9 |
483 | New(54,PL_retstack,8,OP*); |
474 | New(54,PL_retstack,8,OP*); |
484 | PL_retstack_ix = 0; |
475 | PL_retstack_ix = 0; |
485 | PL_retstack_max = 8; |
476 | PL_retstack_max = 8; |
|
|
477 | #endif |
|
|
478 | |
|
|
479 | UNLOCK; |
486 | } |
480 | } |
487 | |
481 | |
488 | /* |
482 | /* |
489 | * destroy the stacks, the callchain etc... |
483 | * destroy the stacks, the callchain etc... |
490 | * still there is a memleak of 128 bytes... |
|
|
491 | */ |
484 | */ |
492 | STATIC void |
485 | static void |
493 | destroy_stacks(pTHX) |
486 | destroy_stacks() |
494 | { |
487 | { |
495 | if (!IN_DESTRUCT) |
488 | if (!IN_DESTRUCT) |
496 | { |
489 | { |
497 | /* is this ugly, I ask? */ |
490 | /* is this ugly, I ask? */ |
498 | while (PL_scopestack_ix) |
491 | LEAVE_SCOPE (0); |
499 | LEAVE; |
|
|
500 | |
492 | |
501 | /* sure it is, but more important: is it correct?? :/ */ |
493 | /* sure it is, but more important: is it correct?? :/ */ |
502 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
|
|
503 | FREETMPS; |
494 | FREETMPS; |
|
|
495 | |
|
|
496 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
504 | } |
497 | } |
505 | |
498 | |
506 | while (PL_curstackinfo->si_next) |
499 | while (PL_curstackinfo->si_next) |
507 | PL_curstackinfo = PL_curstackinfo->si_next; |
500 | PL_curstackinfo = PL_curstackinfo->si_next; |
508 | |
501 | |
509 | while (PL_curstackinfo) |
502 | while (PL_curstackinfo) |
510 | { |
503 | { |
511 | PERL_SI *p = PL_curstackinfo->si_prev; |
504 | PERL_SI *p = PL_curstackinfo->si_prev; |
512 | |
505 | |
513 | { |
506 | { /*D*//*remove*/ |
514 | dSP; |
507 | dSP; |
515 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
508 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
516 | PUTBACK; /* possibly superfluous */ |
509 | PUTBACK; /* possibly superfluous */ |
517 | } |
510 | } |
518 | |
511 | |
519 | if (!IN_DESTRUCT) |
512 | if (!IN_DESTRUCT) |
520 | { |
513 | { |
521 | dounwind(-1); |
514 | dounwind (-1);/*D*//*remove*/ |
522 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
515 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
523 | } |
516 | } |
524 | |
517 | |
525 | Safefree(PL_curstackinfo->si_cxstack); |
518 | Safefree (PL_curstackinfo->si_cxstack); |
526 | Safefree(PL_curstackinfo); |
519 | Safefree (PL_curstackinfo); |
527 | PL_curstackinfo = p; |
520 | PL_curstackinfo = p; |
528 | } |
521 | } |
529 | |
522 | |
530 | Safefree(PL_tmps_stack); |
523 | Safefree (PL_tmps_stack); |
531 | Safefree(PL_markstack); |
524 | Safefree (PL_markstack); |
532 | Safefree(PL_scopestack); |
525 | Safefree (PL_scopestack); |
533 | Safefree(PL_savestack); |
526 | Safefree (PL_savestack); |
|
|
527 | #if PERL_VERSION < 9 |
534 | Safefree(PL_retstack); |
528 | Safefree (PL_retstack); |
535 | } |
|
|
536 | |
|
|
537 | static void |
|
|
538 | allocate_stack (Coro__State ctx, int alloc) |
|
|
539 | { |
|
|
540 | coro_stack *stack; |
|
|
541 | |
|
|
542 | New (0, stack, 1, coro_stack); |
|
|
543 | |
|
|
544 | stack->refcnt = 1; |
|
|
545 | stack->usecnt = 1; |
|
|
546 | stack->gencnt = ctx->gencnt = 0; |
|
|
547 | if (alloc) |
|
|
548 | { |
|
|
549 | #if HAVE_MMAP |
|
|
550 | stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
551 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
552 | if (stack->sptr == (void *)-1) |
|
|
553 | #endif |
529 | #endif |
554 | { |
|
|
555 | /*FIXME*//*D*//* reasonable stack size! */ |
|
|
556 | stack->ssize = -4096 * sizeof (long); |
|
|
557 | New (0, stack->sptr, 4096, long); |
|
|
558 | } |
|
|
559 | } |
|
|
560 | else |
|
|
561 | stack->sptr = 0; |
|
|
562 | |
|
|
563 | ctx->stack = stack; |
|
|
564 | } |
530 | } |
565 | |
531 | |
566 | static void |
532 | static void |
567 | deallocate_stack (Coro__State ctx) |
533 | setup_coro (struct coro *coro) |
568 | { |
|
|
569 | coro_stack *stack = ctx->stack; |
|
|
570 | |
|
|
571 | ctx->stack = 0; |
|
|
572 | |
|
|
573 | if (stack) |
|
|
574 | { |
|
|
575 | if (!--stack->refcnt) |
|
|
576 | { |
|
|
577 | #ifdef HAVE_MMAP |
|
|
578 | if (stack->ssize > 0 && stack->sptr) |
|
|
579 | munmap (stack->sptr, stack->ssize); |
|
|
580 | else |
|
|
581 | #else |
|
|
582 | Safefree (stack->sptr); |
|
|
583 | #endif |
|
|
584 | Safefree (stack); |
|
|
585 | } |
|
|
586 | else if (ctx->gencnt == stack->gencnt) |
|
|
587 | --stack->usecnt; |
|
|
588 | } |
|
|
589 | } |
|
|
590 | |
|
|
591 | static void |
|
|
592 | setup_coro (void *arg) |
|
|
593 | { |
534 | { |
594 | /* |
535 | /* |
595 | * emulate part of the perl startup here. |
536 | * emulate part of the perl startup here. |
596 | */ |
537 | */ |
|
|
538 | dTHX; |
597 | dSP; |
539 | dSP; |
598 | Coro__State ctx = (Coro__State)arg; |
540 | UNOP myop; |
599 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
541 | SV *sub_init = (SV *)get_cv ("Coro::State::coro_init", FALSE); |
600 | |
542 | |
601 | coro_init_stacks (aTHX); |
543 | coro_init_stacks (); |
602 | /*PL_curcop = 0;*/ |
544 | /*PL_curcop = 0;*/ |
603 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
545 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
604 | SvREFCNT_dec (GvAV (PL_defgv)); |
546 | SvREFCNT_dec (GvAV (PL_defgv)); |
605 | GvAV (PL_defgv) = ctx->args; |
547 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
606 | |
548 | |
607 | SPAGAIN; |
549 | SPAGAIN; |
608 | |
550 | |
609 | if (ctx->stack) |
551 | Zero (&myop, 1, UNOP); |
|
|
552 | myop.op_next = Nullop; |
|
|
553 | myop.op_flags = OPf_WANT_VOID; |
|
|
554 | |
|
|
555 | PL_op = (OP *)&myop; |
|
|
556 | |
|
|
557 | PUSHMARK(SP); |
|
|
558 | XPUSHs (sub_init); |
|
|
559 | PUTBACK; |
|
|
560 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
561 | SPAGAIN; |
|
|
562 | |
|
|
563 | ENTER; /* necessary e.g. for dounwind */ |
|
|
564 | } |
|
|
565 | |
|
|
566 | static void |
|
|
567 | free_coro_mortal () |
|
|
568 | { |
|
|
569 | if (coro_mortal) |
610 | { |
570 | { |
611 | ctx->cursp = 0; |
571 | SvREFCNT_dec (coro_mortal); |
612 | |
572 | coro_mortal = 0; |
613 | PUSHMARK(SP); |
|
|
614 | PUTBACK; |
|
|
615 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
616 | |
|
|
617 | if (SvTRUE (ERRSV)) |
|
|
618 | croak (NULL); |
|
|
619 | else |
|
|
620 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
621 | } |
573 | } |
622 | else |
|
|
623 | { |
|
|
624 | UNOP myop; |
|
|
625 | |
|
|
626 | PL_op = (OP *)&myop; |
|
|
627 | |
|
|
628 | Zero(&myop, 1, UNOP); |
|
|
629 | myop.op_next = Nullop; |
|
|
630 | myop.op_flags = OPf_WANT_VOID; |
|
|
631 | |
|
|
632 | PUSHMARK(SP); |
|
|
633 | XPUSHs (sub_init); |
|
|
634 | /* |
|
|
635 | * the next line is slightly wrong, as PL_op->op_next |
|
|
636 | * is actually being executed so we skip the first op. |
|
|
637 | * that doesn't matter, though, since it is only |
|
|
638 | * pp_nextstate and we never return... |
|
|
639 | * ah yes, and I don't care anyways ;) |
|
|
640 | */ |
|
|
641 | PUTBACK; |
|
|
642 | PL_op = pp_entersub(); |
|
|
643 | SPAGAIN; |
|
|
644 | |
|
|
645 | ENTER; /* necessary e.g. for dounwind */ |
|
|
646 | } |
|
|
647 | } |
574 | } |
648 | |
575 | |
649 | static void |
576 | static void |
650 | continue_coro (void *arg) |
577 | coro_run (void *arg) |
651 | { |
578 | { |
652 | /* |
579 | /* |
653 | * this is a _very_ stripped down perl interpreter ;) |
580 | * this is a _very_ stripped down perl interpreter ;) |
654 | */ |
581 | */ |
655 | Coro__State ctx = (Coro__State)arg; |
582 | dTHX; |
656 | JMPENV coro_start_env; |
583 | int ret; |
657 | |
584 | |
658 | /* same as JMPENV_BOOTSTRAP */ |
585 | UNLOCK; |
659 | Zero(&coro_start_env, 1, JMPENV); |
586 | |
660 | coro_start_env.je_ret = -1; |
|
|
661 | coro_start_env.je_mustcatch = TRUE; |
|
|
662 | PL_top_env = &coro_start_env; |
587 | PL_top_env = &PL_start_env; |
663 | |
588 | |
664 | ctx->cursp = 0; |
589 | sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg)); |
665 | PL_op = PL_op->op_next; |
590 | sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op)); |
666 | CALLRUNOPS(aTHX); |
|
|
667 | |
591 | |
|
|
592 | /* continue at cctx_init, without entersub */ |
|
|
593 | PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE)); |
|
|
594 | |
|
|
595 | /* somebody will hit me for both perl_run and PL_restartop */ |
|
|
596 | ret = perl_run (PERL_GET_CONTEXT); |
|
|
597 | printf ("ret %d\n", ret);//D |
|
|
598 | |
|
|
599 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr); |
668 | abort (); |
600 | abort (); |
669 | } |
601 | } |
670 | |
602 | |
671 | STATIC void |
603 | static coro_stack * |
|
|
604 | stack_new () |
|
|
605 | { |
|
|
606 | coro_stack *stack; |
|
|
607 | |
|
|
608 | New (0, stack, 1, coro_stack); |
|
|
609 | |
|
|
610 | #if HAVE_MMAP |
|
|
611 | |
|
|
612 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
|
|
613 | /* mmap suppsedly does allocate-on-write for us */ |
|
|
614 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
615 | |
|
|
616 | if (stack->sptr == (void *)-1) |
|
|
617 | { |
|
|
618 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
619 | _exit (EXIT_FAILURE); |
|
|
620 | } |
|
|
621 | |
|
|
622 | # if STACKGUARD |
|
|
623 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
624 | # endif |
|
|
625 | |
|
|
626 | #else |
|
|
627 | |
|
|
628 | stack->ssize = STACKSIZE * (long)sizeof (long); |
|
|
629 | New (0, stack->sptr, STACKSIZE, long); |
|
|
630 | |
|
|
631 | if (!stack->sptr) |
|
|
632 | { |
|
|
633 | perror (stderr, "FATAL: unable to malloc stack for coroutine"); |
|
|
634 | _exit (EXIT_FAILURE); |
|
|
635 | } |
|
|
636 | |
|
|
637 | #endif |
|
|
638 | |
|
|
639 | coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize); |
|
|
640 | |
|
|
641 | return stack; |
|
|
642 | } |
|
|
643 | |
|
|
644 | static void |
|
|
645 | stack_free (coro_stack *stack) |
|
|
646 | { |
|
|
647 | if (!stack) |
|
|
648 | return; |
|
|
649 | |
|
|
650 | #if HAVE_MMAP |
|
|
651 | munmap (stack->sptr, stack->ssize); |
|
|
652 | #else |
|
|
653 | Safefree (stack->sptr); |
|
|
654 | #endif |
|
|
655 | |
|
|
656 | Safefree (stack); |
|
|
657 | } |
|
|
658 | |
|
|
659 | static coro_stack *stack_first; |
|
|
660 | |
|
|
661 | static coro_stack * |
|
|
662 | stack_get () |
|
|
663 | { |
|
|
664 | coro_stack *stack; |
|
|
665 | |
|
|
666 | if (stack_first) |
|
|
667 | { |
|
|
668 | stack = stack_first; |
|
|
669 | stack_first = stack->next; |
|
|
670 | } |
|
|
671 | else |
|
|
672 | { |
|
|
673 | stack = stack_new (); |
|
|
674 | PL_op = PL_op->op_next; |
|
|
675 | } |
|
|
676 | |
|
|
677 | return stack; |
|
|
678 | } |
|
|
679 | |
|
|
680 | static void |
|
|
681 | stack_put (coro_stack *stack) |
|
|
682 | { |
|
|
683 | stack->next = stack_first; |
|
|
684 | stack_first = stack; |
|
|
685 | } |
|
|
686 | |
|
|
687 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
688 | static void |
672 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
689 | transfer_impl (struct coro *prev, struct coro *next, int flags) |
673 | { |
690 | { |
674 | dSTACKLEVEL; |
691 | dSTACKLEVEL; |
675 | static struct coro *xnext; |
|
|
676 | |
692 | |
|
|
693 | /* sometimes transfer is only called to set idle_sp */ |
|
|
694 | if (flags == TRANSFER_SET_STACKLEVEL) |
|
|
695 | ((coro_stack *)prev)->idle_sp = STACKLEVEL; |
677 | if (prev != next) |
696 | else if (prev != next) |
678 | { |
697 | { |
679 | xnext = next; |
698 | coro_stack *prev__stack; |
|
|
699 | |
|
|
700 | LOCK; |
680 | |
701 | |
681 | if (next->mainstack) |
702 | if (next->mainstack) |
682 | { |
703 | { |
|
|
704 | /* coroutine already started */ |
683 | SAVE (prev, flags); |
705 | SAVE (prev, flags); |
684 | LOAD (next); |
706 | LOAD (next); |
685 | |
|
|
686 | /* mark this state as in-use */ |
|
|
687 | next->mainstack = 0; |
|
|
688 | next->tmps_ix = -2; |
|
|
689 | |
|
|
690 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
691 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
692 | { |
|
|
693 | if (!prev->stack) |
|
|
694 | allocate_stack (prev, 0); |
|
|
695 | else if (prev->cursp != stacklevel |
|
|
696 | && prev->stack->usecnt > 1) |
|
|
697 | { |
|
|
698 | prev->gencnt = ++prev->stack->gencnt; |
|
|
699 | prev->stack->usecnt = 1; |
|
|
700 | } |
|
|
701 | |
|
|
702 | /* has our stack been invalidated? */ |
|
|
703 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
704 | { |
|
|
705 | deallocate_stack (next); |
|
|
706 | allocate_stack (next, 1); |
|
|
707 | coro_create (&(next->stack->cctx), |
|
|
708 | continue_coro, (void *)next, |
|
|
709 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
710 | } |
|
|
711 | |
|
|
712 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
713 | /* don't add any code here */ |
|
|
714 | } |
|
|
715 | |
|
|
716 | } |
707 | } |
717 | else if (next->tmps_ix == -2) |
|
|
718 | croak ("tried to transfer to running coroutine"); |
|
|
719 | else |
708 | else |
720 | { |
709 | { |
|
|
710 | /* need to start coroutine */ |
721 | SAVE (prev, -1); /* first get rid of the old state */ |
711 | /* first get rid of the old state */ |
722 | |
712 | SAVE (prev, -1); |
723 | if (flags & TRANSFER_SAVE_CCTXT) |
713 | /* setup coroutine call */ |
724 | { |
|
|
725 | if (!prev->stack) |
|
|
726 | allocate_stack (prev, 0); |
|
|
727 | |
|
|
728 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
729 | { |
|
|
730 | setup_coro (next); |
|
|
731 | |
|
|
732 | prev->stack->refcnt++; |
|
|
733 | prev->stack->usecnt++; |
|
|
734 | next->stack = prev->stack; |
|
|
735 | next->gencnt = prev->gencnt; |
|
|
736 | } |
|
|
737 | else |
|
|
738 | { |
|
|
739 | allocate_stack (next, 1); |
|
|
740 | coro_create (&(next->stack->cctx), |
|
|
741 | setup_coro, (void *)next, |
|
|
742 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
743 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
744 | /* don't add any code here */ |
|
|
745 | } |
|
|
746 | } |
|
|
747 | else |
|
|
748 | setup_coro (next); |
714 | setup_coro (next); |
|
|
715 | /* need a stack */ |
|
|
716 | next->stack = 0; |
749 | } |
717 | } |
750 | |
718 | |
751 | /* |
719 | if (!prev->stack) |
752 | * xnext is now either prev or next, depending on wether |
720 | /* create a new empty context */ |
753 | * we switched the c stack or not. that's why i use a global |
721 | Newz (0, prev->stack, 1, coro_stack); |
754 | * variable, that should become thread-specific at one point. |
722 | |
|
|
723 | prev__stack = prev->stack; |
|
|
724 | |
|
|
725 | /* possibly "free" the stack */ |
|
|
726 | if (prev__stack->idle_sp == STACKLEVEL) |
755 | */ |
727 | { |
756 | xnext->cursp = stacklevel; |
728 | stack_put (prev__stack); |
|
|
729 | prev->stack = 0; |
|
|
730 | } |
|
|
731 | |
|
|
732 | if (!next->stack) |
|
|
733 | next->stack = stack_get (); |
|
|
734 | |
|
|
735 | if (prev__stack != next->stack) |
|
|
736 | { |
|
|
737 | prev__stack->top_env = PL_top_env; |
|
|
738 | PL_top_env = next->stack->top_env; |
|
|
739 | coro_transfer (&prev__stack->cctx, &next->stack->cctx); |
|
|
740 | } |
|
|
741 | |
|
|
742 | free_coro_mortal (); |
|
|
743 | |
|
|
744 | UNLOCK; |
757 | } |
745 | } |
758 | } |
746 | } |
759 | |
747 | |
|
|
748 | /* use this function pointer to call the above function */ |
|
|
749 | /* this is done to increase chances of the compiler not inlining the call */ |
|
|
750 | /* not static to make it even harder for the compiler (and theoretically impossible in most cases */ |
|
|
751 | void (*coro_state_transfer)(struct coro *prev, struct coro *next, int flags) = transfer_impl; |
|
|
752 | |
|
|
753 | struct transfer_args |
|
|
754 | { |
|
|
755 | struct coro *prev, *next; |
|
|
756 | int flags; |
|
|
757 | }; |
|
|
758 | |
|
|
759 | #define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags) |
|
|
760 | |
|
|
761 | static void |
|
|
762 | coro_state_destroy (struct coro *coro) |
|
|
763 | { |
|
|
764 | if (coro->refcnt--) |
|
|
765 | return; |
|
|
766 | |
|
|
767 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
768 | { |
|
|
769 | struct coro temp; |
|
|
770 | |
|
|
771 | SAVE ((&temp), TRANSFER_SAVE_ALL); |
|
|
772 | LOAD (coro); |
|
|
773 | |
|
|
774 | destroy_stacks (); |
|
|
775 | |
|
|
776 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
777 | |
|
|
778 | coro->mainstack = 0; |
|
|
779 | } |
|
|
780 | |
|
|
781 | stack_free (coro->stack); |
|
|
782 | SvREFCNT_dec (coro->args); |
|
|
783 | Safefree (coro); |
|
|
784 | } |
|
|
785 | |
|
|
786 | static int |
|
|
787 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
|
|
788 | { |
|
|
789 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
790 | mg->mg_ptr = 0; |
|
|
791 | |
|
|
792 | coro_state_destroy (coro); |
|
|
793 | |
|
|
794 | return 0; |
|
|
795 | } |
|
|
796 | |
|
|
797 | static int |
|
|
798 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
799 | { |
|
|
800 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
801 | |
|
|
802 | ++coro->refcnt; |
|
|
803 | |
|
|
804 | return 0; |
|
|
805 | } |
|
|
806 | |
|
|
807 | static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 }; |
|
|
808 | |
760 | static struct coro * |
809 | static struct coro * |
761 | sv_to_coro (SV *arg, const char *funcname, const char *varname) |
810 | SvSTATE (SV *coro) |
762 | { |
811 | { |
763 | if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV) |
812 | HV *stash; |
|
|
813 | MAGIC *mg; |
|
|
814 | |
|
|
815 | if (SvROK (coro)) |
|
|
816 | coro = SvRV (coro); |
|
|
817 | |
|
|
818 | stash = SvSTASH (coro); |
|
|
819 | if (stash != coro_stash && stash != coro_state_stash) |
764 | { |
820 | { |
765 | HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash); |
821 | /* very slow, but rare, check */ |
766 | |
822 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
767 | if (!he) |
823 | croak ("Coro::State object required"); |
768 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname); |
|
|
769 | |
|
|
770 | arg = HeVAL(he); |
|
|
771 | } |
824 | } |
772 | |
|
|
773 | /* must also be changed inside Coro::Cont::yield */ |
|
|
774 | if (SvROK(arg) && SvOBJECT(SvRV(arg)) |
|
|
775 | && SvSTASH(SvRV(arg)) == coro_state_stash) |
|
|
776 | return (struct coro *) SvIV((SV*)SvRV(arg)); |
|
|
777 | |
825 | |
778 | croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname); |
826 | mg = SvMAGIC (coro); |
779 | /*NORETURN*/ |
827 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
828 | return (struct coro *)mg->mg_ptr; |
780 | } |
829 | } |
781 | |
830 | |
782 | static void |
831 | static void |
|
|
832 | prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
|
|
833 | { |
|
|
834 | ta->prev = SvSTATE (prev); |
|
|
835 | ta->next = SvSTATE (next); |
|
|
836 | ta->flags = flags; |
|
|
837 | } |
|
|
838 | |
|
|
839 | static void |
783 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
840 | api_transfer (SV *prev, SV *next, int flags) |
784 | { |
841 | { |
785 | transfer(aTHX_ |
842 | dTHX; |
786 | sv_to_coro (prev, "Coro::transfer", "prev"), |
843 | struct transfer_args ta; |
787 | sv_to_coro (next, "Coro::transfer", "next"), |
844 | |
788 | flags); |
845 | prepare_transfer (&ta, prev, next, flags); |
|
|
846 | TRANSFER (ta); |
789 | } |
847 | } |
790 | |
848 | |
791 | /** Coro ********************************************************************/ |
849 | /** Coro ********************************************************************/ |
792 | |
850 | |
793 | #define PRIO_MAX 3 |
851 | #define PRIO_MAX 3 |
… | |
… | |
797 | #define PRIO_IDLE -3 |
855 | #define PRIO_IDLE -3 |
798 | #define PRIO_MIN -4 |
856 | #define PRIO_MIN -4 |
799 | |
857 | |
800 | /* for Coro.pm */ |
858 | /* for Coro.pm */ |
801 | static GV *coro_current, *coro_idle; |
859 | static GV *coro_current, *coro_idle; |
802 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
860 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
803 | static int coro_nready; |
861 | static int coro_nready; |
804 | |
862 | |
805 | static void |
863 | static void |
806 | coro_enq (SV *sv) |
864 | coro_enq (SV *sv) |
807 | { |
865 | { |
808 | if (SvROK (sv)) |
866 | int prio; |
809 | { |
867 | |
810 | SV *hv = SvRV (sv); |
|
|
811 | if (SvTYPE (hv) == SVt_PVHV) |
868 | if (SvTYPE (sv) != SVt_PVHV) |
812 | { |
|
|
813 | SV **xprio = hv_fetch ((HV *)hv, "prio", 4, 0); |
|
|
814 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
815 | |
|
|
816 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
817 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
818 | : prio; |
|
|
819 | |
|
|
820 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
821 | coro_nready++; |
|
|
822 | |
|
|
823 | return; |
|
|
824 | } |
|
|
825 | } |
|
|
826 | |
|
|
827 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
869 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
870 | |
|
|
871 | prio = SvSTATE (sv)->prio; |
|
|
872 | |
|
|
873 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
874 | coro_nready++; |
828 | } |
875 | } |
829 | |
876 | |
830 | static SV * |
877 | static SV * |
831 | coro_deq (int min_prio) |
878 | coro_deq (int min_prio) |
832 | { |
879 | { |
… | |
… | |
835 | min_prio -= PRIO_MIN; |
882 | min_prio -= PRIO_MIN; |
836 | if (min_prio < 0) |
883 | if (min_prio < 0) |
837 | min_prio = 0; |
884 | min_prio = 0; |
838 | |
885 | |
839 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
886 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
840 | if (av_len (coro_ready[prio]) >= 0) |
887 | if (AvFILLp (coro_ready [prio]) >= 0) |
841 | { |
888 | { |
842 | coro_nready--; |
889 | coro_nready--; |
843 | return av_shift (coro_ready[prio]); |
890 | return av_shift (coro_ready [prio]); |
844 | } |
891 | } |
845 | |
892 | |
846 | return 0; |
893 | return 0; |
847 | } |
894 | } |
848 | |
895 | |
849 | static void |
896 | static void |
850 | api_ready (SV *coro) |
897 | api_ready (SV *coro) |
851 | { |
898 | { |
|
|
899 | dTHX; |
|
|
900 | |
|
|
901 | if (SvROK (coro)) |
|
|
902 | coro = SvRV (coro); |
|
|
903 | |
|
|
904 | LOCK; |
852 | coro_enq (SvREFCNT_inc (coro)); |
905 | coro_enq (SvREFCNT_inc (coro)); |
|
|
906 | UNLOCK; |
853 | } |
907 | } |
854 | |
908 | |
855 | static void |
909 | static void |
856 | api_schedule (int cede) |
910 | prepare_schedule (struct transfer_args *ta) |
857 | { |
911 | { |
858 | SV *prev, *next; |
912 | SV *current, *prev, *next; |
859 | |
913 | |
|
|
914 | LOCK; |
|
|
915 | |
860 | prev = GvSV (coro_current); |
916 | current = GvSV (coro_current); |
861 | |
917 | |
862 | if (cede) |
918 | for (;;) |
863 | coro_enq (SvREFCNT_inc (prev)); |
919 | { |
|
|
920 | LOCK; |
864 | |
921 | |
865 | next = coro_deq (PRIO_MIN); |
922 | next = coro_deq (PRIO_MIN); |
866 | |
923 | |
867 | if (!next) |
924 | if (next) |
868 | next = SvREFCNT_inc (GvSV (coro_idle)); |
925 | break; |
869 | |
926 | |
870 | GvSV (coro_current) = SvREFCNT_inc (next); |
927 | UNLOCK; |
871 | transfer (aTHX_ |
928 | |
872 | sv_to_coro (prev, "Coro::schedule", "current coroutine"), |
929 | { |
873 | sv_to_coro (next, "Coro::schedule", "next coroutine"), |
930 | dSP; |
874 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
931 | |
875 | SvREFCNT_dec (next); |
932 | ENTER; |
876 | SvREFCNT_dec (prev); |
933 | SAVETMPS; |
|
|
934 | |
|
|
935 | PUSHMARK (SP); |
|
|
936 | PUTBACK; |
|
|
937 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
938 | |
|
|
939 | FREETMPS; |
|
|
940 | LEAVE; |
|
|
941 | } |
|
|
942 | } |
|
|
943 | |
|
|
944 | prev = SvRV (current); |
|
|
945 | SvRV (current) = next; |
|
|
946 | |
|
|
947 | /* free this only after the transfer */ |
|
|
948 | free_coro_mortal (); |
|
|
949 | coro_mortal = prev; |
|
|
950 | |
|
|
951 | ta->prev = SvSTATE (prev); |
|
|
952 | ta->next = SvSTATE (next); |
|
|
953 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
954 | |
|
|
955 | UNLOCK; |
|
|
956 | } |
|
|
957 | |
|
|
958 | static void |
|
|
959 | prepare_cede (struct transfer_args *ta) |
|
|
960 | { |
|
|
961 | LOCK; |
|
|
962 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
963 | UNLOCK; |
|
|
964 | |
|
|
965 | prepare_schedule (ta); |
|
|
966 | } |
|
|
967 | |
|
|
968 | static void |
|
|
969 | api_schedule (void) |
|
|
970 | { |
|
|
971 | dTHX; |
|
|
972 | struct transfer_args ta; |
|
|
973 | |
|
|
974 | prepare_schedule (&ta); |
|
|
975 | TRANSFER (ta); |
|
|
976 | } |
|
|
977 | |
|
|
978 | static void |
|
|
979 | api_cede (void) |
|
|
980 | { |
|
|
981 | dTHX; |
|
|
982 | struct transfer_args ta; |
|
|
983 | |
|
|
984 | prepare_cede (&ta); |
|
|
985 | TRANSFER (ta); |
877 | } |
986 | } |
878 | |
987 | |
879 | MODULE = Coro::State PACKAGE = Coro::State |
988 | MODULE = Coro::State PACKAGE = Coro::State |
880 | |
989 | |
881 | PROTOTYPES: ENABLE |
990 | PROTOTYPES: DISABLE |
882 | |
991 | |
883 | BOOT: |
992 | BOOT: |
884 | { /* {} necessary for stoopid perl-5.6.x */ |
993 | { |
885 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
994 | #ifdef USE_ITHREADS |
886 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
995 | MUTEX_INIT (&coro_mutex); |
|
|
996 | #endif |
|
|
997 | BOOT_PAGESIZE; |
|
|
998 | |
887 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
999 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
888 | |
1000 | |
889 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1001 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
890 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1002 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
891 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1003 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
892 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
|
|
893 | |
|
|
894 | if (!padlist_cache) |
|
|
895 | padlist_cache = newHV (); |
|
|
896 | |
1004 | |
897 | main_mainstack = PL_mainstack; |
1005 | main_mainstack = PL_mainstack; |
898 | |
1006 | |
899 | coroapi.ver = CORO_API_VERSION; |
1007 | coroapi.ver = CORO_API_VERSION; |
900 | coroapi.transfer = api_transfer; |
1008 | coroapi.transfer = api_transfer; |
901 | } |
|
|
902 | |
1009 | |
903 | Coro::State |
1010 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
904 | _newprocess(args) |
1011 | } |
905 | SV * args |
1012 | |
906 | PROTOTYPE: $ |
1013 | SV * |
|
|
1014 | new (char *klass, ...) |
907 | CODE: |
1015 | CODE: |
908 | Coro__State coro; |
1016 | { |
|
|
1017 | struct coro *coro; |
|
|
1018 | HV *hv; |
|
|
1019 | int i; |
909 | |
1020 | |
910 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
|
|
911 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
912 | |
|
|
913 | New (0, coro, 1, struct coro); |
1021 | Newz (0, coro, 1, struct coro); |
|
|
1022 | coro->args = newAV (); |
914 | |
1023 | |
915 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
1024 | hv = newHV (); |
|
|
1025 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
|
|
1026 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
|
|
1027 | |
|
|
1028 | for (i = 1; i < items; i++) |
|
|
1029 | av_push (coro->args, newSVsv (ST (i))); |
|
|
1030 | |
916 | coro->mainstack = 0; /* actual work is done inside transfer */ |
1031 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
917 | coro->stack = 0; |
1032 | /*coro->stack = 0;*/ |
918 | |
1033 | } |
919 | RETVAL = coro; |
|
|
920 | OUTPUT: |
1034 | OUTPUT: |
921 | RETVAL |
1035 | RETVAL |
922 | |
1036 | |
923 | void |
1037 | void |
924 | transfer(prev, next, flags) |
1038 | _set_stacklevel (...) |
925 | Coro::State_or_hashref prev |
1039 | ALIAS: |
926 | Coro::State_or_hashref next |
1040 | Coro::State::transfer = 1 |
927 | int flags |
1041 | Coro::schedule = 2 |
928 | PROTOTYPE: @ |
1042 | Coro::cede = 3 |
|
|
1043 | Coro::Cont::yield = 4 |
929 | CODE: |
1044 | CODE: |
930 | PUTBACK; |
1045 | { |
931 | transfer (aTHX_ prev, next, flags); |
1046 | struct transfer_args ta; |
932 | SPAGAIN; |
1047 | |
|
|
1048 | switch (ix) |
|
|
1049 | { |
|
|
1050 | case 0: |
|
|
1051 | ta.prev = (struct coro *)INT2PTR (coro_stack *, SvIV (ST (0))); |
|
|
1052 | ta.next = 0; |
|
|
1053 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1054 | break; |
|
|
1055 | |
|
|
1056 | case 1: |
|
|
1057 | if (items != 3) |
|
|
1058 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
|
|
1059 | |
|
|
1060 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
|
|
1061 | break; |
|
|
1062 | |
|
|
1063 | case 2: |
|
|
1064 | prepare_schedule (&ta); |
|
|
1065 | break; |
|
|
1066 | |
|
|
1067 | case 3: |
|
|
1068 | prepare_cede (&ta); |
|
|
1069 | break; |
|
|
1070 | |
|
|
1071 | case 4: |
|
|
1072 | { |
|
|
1073 | SV *yieldstack; |
|
|
1074 | SV *sv; |
|
|
1075 | AV *defav = GvAV (PL_defgv); |
|
|
1076 | |
|
|
1077 | yieldstack = *hv_fetch ( |
|
|
1078 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1079 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1080 | 0 |
|
|
1081 | ); |
|
|
1082 | |
|
|
1083 | /* set up @_ -- ugly */ |
|
|
1084 | av_clear (defav); |
|
|
1085 | av_fill (defav, items - 1); |
|
|
1086 | while (items--) |
|
|
1087 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1088 | |
|
|
1089 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1090 | ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1091 | ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1092 | ta.flags = 0; |
|
|
1093 | SvREFCNT_dec (sv); |
|
|
1094 | } |
|
|
1095 | break; |
|
|
1096 | |
|
|
1097 | } |
|
|
1098 | |
|
|
1099 | TRANSFER (ta); |
|
|
1100 | } |
933 | |
1101 | |
934 | void |
1102 | void |
935 | DESTROY(coro) |
1103 | _clone_state_from (SV *dst, SV *src) |
936 | Coro::State coro |
1104 | CODE: |
937 | CODE: |
1105 | { |
|
|
1106 | struct coro *coro_src = SvSTATE (src); |
938 | |
1107 | |
939 | if (coro->mainstack && coro->mainstack != main_mainstack) |
1108 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
940 | { |
|
|
941 | struct coro temp; |
|
|
942 | |
1109 | |
943 | PUTBACK; |
1110 | ++coro_src->refcnt; |
944 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
1111 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
945 | LOAD(aTHX_ coro); |
1112 | } |
946 | SPAGAIN; |
|
|
947 | |
|
|
948 | destroy_stacks (aTHX); |
|
|
949 | |
|
|
950 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
|
|
951 | SPAGAIN; |
|
|
952 | |
|
|
953 | coro->mainstack = 0; |
|
|
954 | } |
|
|
955 | |
|
|
956 | deallocate_stack (coro); |
|
|
957 | |
|
|
958 | Safefree (coro); |
|
|
959 | |
1113 | |
960 | void |
1114 | void |
961 | flush() |
1115 | _nonlocal_goto (IV nextop) |
962 | CODE: |
1116 | CODE: |
963 | #ifdef MAY_FLUSH |
1117 | /* uuh, somebody will kill me again for this */ |
964 | flush_padlist_cache (); |
1118 | PL_op->op_next = INT2PTR (OP *, nextop); |
965 | #endif |
|
|
966 | |
1119 | |
967 | void |
1120 | void |
968 | _exit(code) |
1121 | _exit (code) |
969 | int code |
1122 | int code |
970 | PROTOTYPE: $ |
1123 | PROTOTYPE: $ |
971 | CODE: |
1124 | CODE: |
972 | #if defined(__GLIBC__) || _POSIX_C_SOURCE |
|
|
973 | _exit (code); |
1125 | _exit (code); |
974 | #else |
|
|
975 | signal (SIGTERM, SIG_DFL); |
|
|
976 | raise (SIGTERM); |
|
|
977 | exit (code); |
|
|
978 | #endif |
|
|
979 | |
|
|
980 | MODULE = Coro::State PACKAGE = Coro::Cont |
|
|
981 | |
|
|
982 | # this is slightly dirty (should expose a c-level api) |
|
|
983 | |
|
|
984 | void |
|
|
985 | yield(...) |
|
|
986 | PROTOTYPE: @ |
|
|
987 | CODE: |
|
|
988 | static SV *returnstk; |
|
|
989 | SV *sv; |
|
|
990 | AV *defav = GvAV (PL_defgv); |
|
|
991 | struct coro *prev, *next; |
|
|
992 | |
|
|
993 | if (!returnstk) |
|
|
994 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
|
|
995 | |
|
|
996 | /* set up @_ -- ugly */ |
|
|
997 | av_clear (defav); |
|
|
998 | av_fill (defav, items - 1); |
|
|
999 | while (items--) |
|
|
1000 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1001 | |
|
|
1002 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
1003 | sv = av_pop ((AV *)SvRV (returnstk)); |
|
|
1004 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
1005 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
1006 | SvREFCNT_dec (sv); |
|
|
1007 | |
|
|
1008 | transfer(aTHX_ prev, next, 0); |
|
|
1009 | |
1126 | |
1010 | MODULE = Coro::State PACKAGE = Coro |
1127 | MODULE = Coro::State PACKAGE = Coro |
1011 | |
1128 | |
1012 | # this is slightly dirty (should expose a c-level api) |
|
|
1013 | |
|
|
1014 | BOOT: |
1129 | BOOT: |
1015 | { |
1130 | { |
1016 | int i; |
1131 | int i; |
|
|
1132 | |
1017 | HV *stash = gv_stashpv ("Coro", TRUE); |
1133 | coro_stash = gv_stashpv ("Coro", TRUE); |
1018 | |
1134 | |
1019 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1135 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1020 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1136 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1021 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1137 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1022 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1138 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1023 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1139 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1024 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1140 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1025 | |
1141 | |
1026 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1142 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1027 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1143 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1028 | |
1144 | |
1029 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1145 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
… | |
… | |
1031 | |
1147 | |
1032 | { |
1148 | { |
1033 | SV *sv = perl_get_sv("Coro::API", 1); |
1149 | SV *sv = perl_get_sv("Coro::API", 1); |
1034 | |
1150 | |
1035 | coroapi.schedule = api_schedule; |
1151 | coroapi.schedule = api_schedule; |
|
|
1152 | coroapi.cede = api_cede; |
1036 | coroapi.ready = api_ready; |
1153 | coroapi.ready = api_ready; |
1037 | coroapi.nready = &coro_nready; |
1154 | coroapi.nready = &coro_nready; |
1038 | coroapi.current = coro_current; |
1155 | coroapi.current = coro_current; |
1039 | |
1156 | |
1040 | GCoroAPI = &coroapi; |
1157 | GCoroAPI = &coroapi; |
1041 | sv_setiv(sv, (IV)&coroapi); |
1158 | sv_setiv (sv, (IV)&coroapi); |
1042 | SvREADONLY_on(sv); |
1159 | SvREADONLY_on (sv); |
1043 | } |
1160 | } |
1044 | } |
1161 | } |
1045 | |
1162 | |
|
|
1163 | int |
|
|
1164 | prio (Coro::State coro, int newprio = 0) |
|
|
1165 | ALIAS: |
|
|
1166 | nice = 1 |
|
|
1167 | CODE: |
|
|
1168 | { |
|
|
1169 | RETVAL = coro->prio; |
|
|
1170 | |
|
|
1171 | if (items > 1) |
|
|
1172 | { |
|
|
1173 | if (ix) |
|
|
1174 | newprio += coro->prio; |
|
|
1175 | |
|
|
1176 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
1177 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
1178 | |
|
|
1179 | coro->prio = newprio; |
|
|
1180 | } |
|
|
1181 | } |
|
|
1182 | |
1046 | void |
1183 | void |
1047 | ready(self) |
1184 | ready (SV *self) |
1048 | SV * self |
|
|
1049 | PROTOTYPE: $ |
1185 | PROTOTYPE: $ |
1050 | CODE: |
1186 | CODE: |
1051 | api_ready (self); |
1187 | api_ready (self); |
1052 | |
1188 | |
1053 | int |
1189 | int |
1054 | nready(...) |
1190 | nready (...) |
1055 | PROTOTYPE: |
1191 | PROTOTYPE: |
1056 | CODE: |
1192 | CODE: |
1057 | RETVAL = coro_nready; |
1193 | RETVAL = coro_nready; |
1058 | OUTPUT: |
1194 | OUTPUT: |
1059 | RETVAL |
1195 | RETVAL |
1060 | |
1196 | |
|
|
1197 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
1198 | |
|
|
1199 | SV * |
|
|
1200 | _get_state () |
|
|
1201 | CODE: |
|
|
1202 | { |
|
|
1203 | struct { |
|
|
1204 | int errorno; |
|
|
1205 | int laststype; |
|
|
1206 | int laststatval; |
|
|
1207 | Stat_t statcache; |
|
|
1208 | } data; |
|
|
1209 | |
|
|
1210 | data.errorno = errno; |
|
|
1211 | data.laststype = PL_laststype; |
|
|
1212 | data.laststatval = PL_laststatval; |
|
|
1213 | data.statcache = PL_statcache; |
|
|
1214 | |
|
|
1215 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1216 | } |
|
|
1217 | OUTPUT: |
|
|
1218 | RETVAL |
|
|
1219 | |
1061 | void |
1220 | void |
1062 | schedule(...) |
1221 | _set_state (char *data_) |
1063 | PROTOTYPE: |
1222 | PROTOTYPE: $ |
1064 | ALIAS: |
|
|
1065 | cede = 1 |
|
|
1066 | CODE: |
1223 | CODE: |
1067 | api_schedule (ix); |
1224 | { |
|
|
1225 | struct { |
|
|
1226 | int errorno; |
|
|
1227 | int laststype; |
|
|
1228 | int laststatval; |
|
|
1229 | Stat_t statcache; |
|
|
1230 | } *data = (void *)data_; |
1068 | |
1231 | |
|
|
1232 | errno = data->errorno; |
|
|
1233 | PL_laststype = data->laststype; |
|
|
1234 | PL_laststatval = data->laststatval; |
|
|
1235 | PL_statcache = data->statcache; |
|
|
1236 | } |