1 |
root |
1.63 |
#include "libcoro/coro.c" |
2 |
|
|
|
3 |
root |
1.1 |
#include "EXTERN.h" |
4 |
|
|
#include "perl.h" |
5 |
|
|
#include "XSUB.h" |
6 |
|
|
|
7 |
pcg |
1.46 |
#include "patchlevel.h" |
8 |
|
|
|
9 |
root |
1.104 |
#if USE_VALGRIND |
10 |
|
|
# include <valgrind/valgrind.h> |
11 |
|
|
#endif |
12 |
|
|
|
13 |
root |
1.115 |
/* the maximum number of idle cctx that will be pooled */ |
14 |
|
|
#define MAX_IDLE_CCTX 8 |
15 |
|
|
|
16 |
root |
1.100 |
#define PERL_VERSION_ATLEAST(a,b,c) \ |
17 |
|
|
(PERL_REVISION > (a) \ |
18 |
|
|
|| (PERL_REVISION == (a) \ |
19 |
|
|
&& (PERL_VERSION > (b) \ |
20 |
|
|
|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
21 |
|
|
|
22 |
root |
1.102 |
#if !PERL_VERSION_ATLEAST (5,6,0) |
23 |
pcg |
1.46 |
# ifndef PL_ppaddr |
24 |
|
|
# define PL_ppaddr ppaddr |
25 |
|
|
# endif |
26 |
|
|
# ifndef call_sv |
27 |
|
|
# define call_sv perl_call_sv |
28 |
|
|
# endif |
29 |
|
|
# ifndef get_sv |
30 |
|
|
# define get_sv perl_get_sv |
31 |
|
|
# endif |
32 |
|
|
# ifndef get_cv |
33 |
|
|
# define get_cv perl_get_cv |
34 |
|
|
# endif |
35 |
|
|
# ifndef IS_PADGV |
36 |
|
|
# define IS_PADGV(v) 0 |
37 |
|
|
# endif |
38 |
|
|
# ifndef IS_PADCONST |
39 |
|
|
# define IS_PADCONST(v) 0 |
40 |
|
|
# endif |
41 |
|
|
#endif |
42 |
|
|
|
43 |
root |
1.92 |
#include <stdio.h> |
44 |
root |
1.70 |
#include <errno.h> |
45 |
root |
1.20 |
|
46 |
root |
1.78 |
#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
47 |
|
|
# undef STACKGUARD |
48 |
|
|
#endif |
49 |
|
|
|
50 |
|
|
#ifndef STACKGUARD |
51 |
|
|
# define STACKGUARD 0 |
52 |
|
|
#endif |
53 |
|
|
|
54 |
root |
1.13 |
#ifdef HAVE_MMAP |
55 |
|
|
# include <unistd.h> |
56 |
|
|
# include <sys/mman.h> |
57 |
root |
1.36 |
# ifndef MAP_ANONYMOUS |
58 |
|
|
# ifdef MAP_ANON |
59 |
|
|
# define MAP_ANONYMOUS MAP_ANON |
60 |
root |
1.16 |
# else |
61 |
|
|
# undef HAVE_MMAP |
62 |
|
|
# endif |
63 |
|
|
# endif |
64 |
root |
1.78 |
# include <limits.h> |
65 |
|
|
# ifndef PAGESIZE |
66 |
|
|
# define PAGESIZE pagesize |
67 |
|
|
# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
68 |
|
|
static long pagesize; |
69 |
|
|
# else |
70 |
root |
1.106 |
# define BOOT_PAGESIZE (void)0 |
71 |
root |
1.78 |
# endif |
72 |
root |
1.106 |
#else |
73 |
|
|
# define PAGESIZE 0 |
74 |
|
|
# define BOOT_PAGESIZE (void)0 |
75 |
root |
1.3 |
#endif |
76 |
|
|
|
77 |
root |
1.28 |
/* The next macro should declare a variable stacklevel that contains and approximation |
78 |
root |
1.23 |
* to the current C stack pointer. Its property is that it changes with each call |
79 |
root |
1.15 |
* and should be unique. */ |
80 |
root |
1.92 |
#define dSTACKLEVEL int stacklevel |
81 |
|
|
#define STACKLEVEL ((void *)&stacklevel) |
82 |
root |
1.15 |
|
83 |
root |
1.34 |
#define IN_DESTRUCT (PL_main_cv == Nullcv) |
84 |
|
|
|
85 |
root |
1.100 |
#if __GNUC__ >= 3 |
86 |
|
|
# define attribute(x) __attribute__(x) |
87 |
|
|
#else |
88 |
|
|
# define attribute(x) |
89 |
|
|
#endif |
90 |
|
|
|
91 |
|
|
#define NOINLINE attribute ((noinline)) |
92 |
|
|
|
93 |
root |
1.23 |
#include "CoroAPI.h" |
94 |
|
|
|
95 |
root |
1.92 |
#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
96 |
|
|
|
97 |
pcg |
1.55 |
#ifdef USE_ITHREADS |
98 |
|
|
static perl_mutex coro_mutex; |
99 |
root |
1.69 |
# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
100 |
pcg |
1.55 |
# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
101 |
|
|
#else |
102 |
root |
1.69 |
# define LOCK (void)0 |
103 |
|
|
# define UNLOCK (void)0 |
104 |
pcg |
1.55 |
#endif |
105 |
|
|
|
106 |
root |
1.120 |
struct io_state |
107 |
|
|
{ |
108 |
|
|
int errorno; |
109 |
|
|
I32 laststype; |
110 |
|
|
int laststatval; |
111 |
|
|
Stat_t statcache; |
112 |
|
|
}; |
113 |
|
|
|
114 |
root |
1.23 |
static struct CoroAPI coroapi; |
115 |
pcg |
1.56 |
static AV *main_mainstack; /* used to differentiate between $main and others */ |
116 |
root |
1.88 |
static HV *coro_state_stash, *coro_stash; |
117 |
pcg |
1.58 |
static SV *coro_mortal; /* will be freed after next transfer */ |
118 |
root |
1.23 |
|
119 |
root |
1.107 |
static struct coro_cctx *cctx_first; |
120 |
|
|
static int cctx_count, cctx_idle; |
121 |
|
|
|
122 |
root |
1.92 |
/* this is a structure representing a c-level coroutine */ |
123 |
root |
1.106 |
typedef struct coro_cctx { |
124 |
|
|
struct coro_cctx *next; |
125 |
root |
1.15 |
|
126 |
root |
1.93 |
/* the stack */ |
127 |
root |
1.15 |
void *sptr; |
128 |
|
|
long ssize; /* positive == mmap, otherwise malloc */ |
129 |
root |
1.89 |
|
130 |
|
|
/* cpu state */ |
131 |
root |
1.96 |
void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
132 |
root |
1.93 |
JMPENV *top_env; |
133 |
root |
1.89 |
coro_context cctx; |
134 |
root |
1.104 |
|
135 |
root |
1.111 |
int inuse; |
136 |
|
|
|
137 |
root |
1.104 |
#if USE_VALGRIND |
138 |
|
|
int valgrind_id; |
139 |
|
|
#endif |
140 |
root |
1.106 |
} coro_cctx; |
141 |
root |
1.15 |
|
142 |
root |
1.111 |
enum { |
143 |
root |
1.117 |
CF_RUNNING = 0x0001, /* coroutine is running */ |
144 |
|
|
CF_READY = 0x0002, /* coroutine is ready */ |
145 |
|
|
CF_NEW = 0x0004, /* ahs never been switched to */ |
146 |
root |
1.111 |
}; |
147 |
|
|
|
148 |
root |
1.92 |
/* this is a structure representing a perl-level coroutine */ |
149 |
root |
1.1 |
struct coro { |
150 |
root |
1.92 |
/* the c coroutine allocated to this perl coroutine, if any */ |
151 |
root |
1.106 |
coro_cctx *cctx; |
152 |
root |
1.92 |
|
153 |
|
|
/* data associated with this coroutine (initial args) */ |
154 |
|
|
AV *args; |
155 |
|
|
int refcnt; |
156 |
root |
1.111 |
int flags; |
157 |
root |
1.92 |
|
158 |
root |
1.7 |
/* optionally saved, might be zero */ |
159 |
root |
1.3 |
AV *defav; |
160 |
root |
1.7 |
SV *defsv; |
161 |
|
|
SV *errsv; |
162 |
root |
1.1 |
|
163 |
root |
1.108 |
#define VAR(name,type) type name; |
164 |
|
|
# include "state.h" |
165 |
|
|
#undef VAR |
166 |
root |
1.1 |
|
167 |
root |
1.87 |
/* coro process data */ |
168 |
|
|
int prio; |
169 |
root |
1.1 |
}; |
170 |
|
|
|
171 |
|
|
typedef struct coro *Coro__State; |
172 |
|
|
typedef struct coro *Coro__State_or_hashref; |
173 |
|
|
|
174 |
root |
1.77 |
static AV * |
175 |
root |
1.98 |
coro_clone_padlist (CV *cv) |
176 |
root |
1.77 |
{ |
177 |
|
|
AV *padlist = CvPADLIST (cv); |
178 |
|
|
AV *newpadlist, *newpad; |
179 |
root |
1.3 |
|
180 |
|
|
newpadlist = newAV (); |
181 |
|
|
AvREAL_off (newpadlist); |
182 |
root |
1.100 |
#if PERL_VERSION_ATLEAST (5,9,0) |
183 |
|
|
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
184 |
|
|
#else |
185 |
root |
1.77 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
186 |
root |
1.79 |
#endif |
187 |
root |
1.77 |
newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
188 |
|
|
--AvFILLp (padlist); |
189 |
root |
1.3 |
|
190 |
root |
1.77 |
av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
191 |
|
|
av_store (newpadlist, 1, (SV *)newpad); |
192 |
root |
1.3 |
|
193 |
|
|
return newpadlist; |
194 |
|
|
} |
195 |
|
|
|
196 |
root |
1.77 |
static void |
197 |
root |
1.98 |
free_padlist (AV *padlist) |
198 |
root |
1.3 |
{ |
199 |
|
|
/* may be during global destruction */ |
200 |
pcg |
1.50 |
if (SvREFCNT (padlist)) |
201 |
root |
1.3 |
{ |
202 |
pcg |
1.50 |
I32 i = AvFILLp (padlist); |
203 |
root |
1.3 |
while (i >= 0) |
204 |
|
|
{ |
205 |
pcg |
1.50 |
SV **svp = av_fetch (padlist, i--, FALSE); |
206 |
|
|
if (svp) |
207 |
|
|
{ |
208 |
|
|
SV *sv; |
209 |
|
|
while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
210 |
|
|
SvREFCNT_dec (sv); |
211 |
|
|
|
212 |
|
|
SvREFCNT_dec (*svp); |
213 |
|
|
} |
214 |
root |
1.3 |
} |
215 |
|
|
|
216 |
pcg |
1.50 |
SvREFCNT_dec ((SV*)padlist); |
217 |
|
|
} |
218 |
|
|
} |
219 |
|
|
|
220 |
root |
1.77 |
static int |
221 |
pcg |
1.54 |
coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
222 |
pcg |
1.50 |
{ |
223 |
|
|
AV *padlist; |
224 |
|
|
AV *av = (AV *)mg->mg_obj; |
225 |
|
|
|
226 |
|
|
/* casting is fun. */ |
227 |
|
|
while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
228 |
root |
1.98 |
free_padlist (padlist); |
229 |
root |
1.61 |
|
230 |
|
|
SvREFCNT_dec (av); |
231 |
root |
1.76 |
|
232 |
|
|
return 0; |
233 |
root |
1.3 |
} |
234 |
pcg |
1.50 |
|
235 |
|
|
#define PERL_MAGIC_coro PERL_MAGIC_ext |
236 |
|
|
|
237 |
|
|
static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
238 |
root |
1.3 |
|
239 |
root |
1.109 |
#define CORO_MAGIC(cv) \ |
240 |
|
|
SvMAGIC (cv) \ |
241 |
|
|
? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
242 |
|
|
? SvMAGIC (cv) \ |
243 |
|
|
: mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
244 |
|
|
: 0 |
245 |
|
|
|
246 |
root |
1.7 |
/* the next two functions merely cache the padlists */ |
247 |
root |
1.77 |
static void |
248 |
root |
1.98 |
get_padlist (CV *cv) |
249 |
root |
1.3 |
{ |
250 |
root |
1.109 |
MAGIC *mg = CORO_MAGIC (cv); |
251 |
|
|
AV *av; |
252 |
root |
1.4 |
|
253 |
root |
1.109 |
if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
254 |
|
|
CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
255 |
root |
1.4 |
else |
256 |
root |
1.77 |
{ |
257 |
|
|
#if 0 |
258 |
root |
1.96 |
/* this is probably cleaner, but also slower? */ |
259 |
root |
1.98 |
CV *cp = Perl_cv_clone (cv); |
260 |
root |
1.77 |
CvPADLIST (cv) = CvPADLIST (cp); |
261 |
|
|
CvPADLIST (cp) = 0; |
262 |
|
|
SvREFCNT_dec (cp); |
263 |
|
|
#else |
264 |
root |
1.98 |
CvPADLIST (cv) = coro_clone_padlist (cv); |
265 |
root |
1.77 |
#endif |
266 |
|
|
} |
267 |
root |
1.4 |
} |
268 |
|
|
|
269 |
root |
1.77 |
static void |
270 |
root |
1.98 |
put_padlist (CV *cv) |
271 |
root |
1.4 |
{ |
272 |
root |
1.109 |
MAGIC *mg = CORO_MAGIC (cv); |
273 |
|
|
AV *av; |
274 |
root |
1.7 |
|
275 |
pcg |
1.50 |
if (!mg) |
276 |
root |
1.7 |
{ |
277 |
pcg |
1.50 |
sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
278 |
|
|
mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
279 |
|
|
mg->mg_virtual = &vtbl_coro; |
280 |
|
|
mg->mg_obj = (SV *)newAV (); |
281 |
root |
1.7 |
} |
282 |
|
|
|
283 |
root |
1.109 |
av = (AV *)mg->mg_obj; |
284 |
|
|
|
285 |
|
|
if (AvFILLp (av) >= AvMAX (av)) |
286 |
|
|
av_extend (av, AvMAX (av) + 1); |
287 |
|
|
|
288 |
|
|
AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
289 |
root |
1.7 |
} |
290 |
|
|
|
291 |
|
|
#define SB do { |
292 |
|
|
#define SE } while (0) |
293 |
|
|
|
294 |
root |
1.117 |
#define LOAD(state) load_state ((state)) |
295 |
|
|
#define SAVE(state,flags) save_state ((state),(flags)) |
296 |
root |
1.7 |
|
297 |
root |
1.117 |
#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
298 |
root |
1.7 |
|
299 |
|
|
static void |
300 |
root |
1.117 |
load_state (Coro__State c) |
301 |
root |
1.7 |
{ |
302 |
root |
1.108 |
#define VAR(name,type) PL_ ## name = c->name; |
303 |
|
|
# include "state.h" |
304 |
|
|
#undef VAR |
305 |
root |
1.7 |
|
306 |
|
|
if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
307 |
|
|
if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
308 |
|
|
if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
309 |
|
|
|
310 |
|
|
{ |
311 |
|
|
dSP; |
312 |
|
|
CV *cv; |
313 |
|
|
|
314 |
|
|
/* now do the ugly restore mess */ |
315 |
|
|
while ((cv = (CV *)POPs)) |
316 |
|
|
{ |
317 |
root |
1.109 |
put_padlist (cv); /* mark this padlist as available */ |
318 |
|
|
CvDEPTH (cv) = PTR2IV (POPs); |
319 |
|
|
CvPADLIST (cv) = (AV *)POPs; |
320 |
root |
1.7 |
} |
321 |
|
|
|
322 |
|
|
PUTBACK; |
323 |
|
|
} |
324 |
|
|
} |
325 |
|
|
|
326 |
root |
1.3 |
static void |
327 |
root |
1.117 |
save_state (Coro__State c, int flags) |
328 |
root |
1.3 |
{ |
329 |
|
|
{ |
330 |
|
|
dSP; |
331 |
|
|
I32 cxix = cxstack_ix; |
332 |
root |
1.11 |
PERL_CONTEXT *ccstk = cxstack; |
333 |
root |
1.3 |
PERL_SI *top_si = PL_curstackinfo; |
334 |
|
|
|
335 |
|
|
/* |
336 |
|
|
* the worst thing you can imagine happens first - we have to save |
337 |
|
|
* (and reinitialize) all cv's in the whole callchain :( |
338 |
|
|
*/ |
339 |
|
|
|
340 |
|
|
PUSHs (Nullsv); |
341 |
|
|
/* this loop was inspired by pp_caller */ |
342 |
|
|
for (;;) |
343 |
|
|
{ |
344 |
root |
1.30 |
while (cxix >= 0) |
345 |
root |
1.3 |
{ |
346 |
root |
1.4 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
347 |
root |
1.3 |
|
348 |
root |
1.117 |
if (CxTYPE (cx) == CXt_SUB) |
349 |
root |
1.3 |
{ |
350 |
|
|
CV *cv = cx->blk_sub.cv; |
351 |
root |
1.109 |
|
352 |
|
|
if (CvDEPTH (cv)) |
353 |
root |
1.3 |
{ |
354 |
root |
1.109 |
EXTEND (SP, 3); |
355 |
root |
1.7 |
|
356 |
root |
1.117 |
PUSHs ((SV *)CvPADLIST (cv)); |
357 |
root |
1.109 |
PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
358 |
root |
1.3 |
PUSHs ((SV *)cv); |
359 |
|
|
|
360 |
root |
1.109 |
CvDEPTH (cv) = 0; |
361 |
root |
1.98 |
get_padlist (cv); |
362 |
root |
1.3 |
} |
363 |
|
|
} |
364 |
pcg |
1.46 |
#ifdef CXt_FORMAT |
365 |
root |
1.117 |
else if (CxTYPE (cx) == CXt_FORMAT) |
366 |
root |
1.3 |
{ |
367 |
|
|
/* I never used formats, so how should I know how these are implemented? */ |
368 |
|
|
/* my bold guess is as a simple, plain sub... */ |
369 |
|
|
croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
370 |
|
|
} |
371 |
pcg |
1.46 |
#endif |
372 |
root |
1.3 |
} |
373 |
|
|
|
374 |
|
|
if (top_si->si_type == PERLSI_MAIN) |
375 |
|
|
break; |
376 |
|
|
|
377 |
|
|
top_si = top_si->si_prev; |
378 |
|
|
ccstk = top_si->si_cxstack; |
379 |
|
|
cxix = top_si->si_cxix; |
380 |
|
|
} |
381 |
|
|
|
382 |
|
|
PUTBACK; |
383 |
|
|
} |
384 |
|
|
|
385 |
root |
1.12 |
c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
386 |
|
|
c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
387 |
|
|
c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
388 |
root |
1.7 |
|
389 |
root |
1.108 |
#define VAR(name,type)c->name = PL_ ## name; |
390 |
|
|
# include "state.h" |
391 |
|
|
#undef VAR |
392 |
root |
1.13 |
} |
393 |
|
|
|
394 |
|
|
/* |
395 |
|
|
* allocate various perl stacks. This is an exact copy |
396 |
|
|
* of perl.c:init_stacks, except that it uses less memory |
397 |
pcg |
1.52 |
* on the (sometimes correct) assumption that coroutines do |
398 |
|
|
* not usually need a lot of stackspace. |
399 |
root |
1.13 |
*/ |
400 |
root |
1.77 |
static void |
401 |
root |
1.98 |
coro_init_stacks () |
402 |
root |
1.13 |
{ |
403 |
root |
1.116 |
PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
404 |
root |
1.13 |
PL_curstackinfo->si_type = PERLSI_MAIN; |
405 |
|
|
PL_curstack = PL_curstackinfo->si_stack; |
406 |
|
|
PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
407 |
|
|
|
408 |
|
|
PL_stack_base = AvARRAY(PL_curstack); |
409 |
|
|
PL_stack_sp = PL_stack_base; |
410 |
|
|
PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
411 |
|
|
|
412 |
root |
1.116 |
New(50,PL_tmps_stack,128,SV*); |
413 |
root |
1.13 |
PL_tmps_floor = -1; |
414 |
|
|
PL_tmps_ix = -1; |
415 |
root |
1.116 |
PL_tmps_max = 128; |
416 |
root |
1.13 |
|
417 |
root |
1.116 |
New(54,PL_markstack,32,I32); |
418 |
root |
1.13 |
PL_markstack_ptr = PL_markstack; |
419 |
root |
1.116 |
PL_markstack_max = PL_markstack + 32; |
420 |
root |
1.13 |
|
421 |
pcg |
1.46 |
#ifdef SET_MARK_OFFSET |
422 |
root |
1.13 |
SET_MARK_OFFSET; |
423 |
pcg |
1.46 |
#endif |
424 |
root |
1.13 |
|
425 |
root |
1.116 |
New(54,PL_scopestack,32,I32); |
426 |
root |
1.13 |
PL_scopestack_ix = 0; |
427 |
root |
1.116 |
PL_scopestack_max = 32; |
428 |
root |
1.13 |
|
429 |
root |
1.116 |
New(54,PL_savestack,64,ANY); |
430 |
root |
1.13 |
PL_savestack_ix = 0; |
431 |
root |
1.116 |
PL_savestack_max = 64; |
432 |
root |
1.13 |
|
433 |
root |
1.100 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
434 |
root |
1.116 |
New(54,PL_retstack,16,OP*); |
435 |
root |
1.13 |
PL_retstack_ix = 0; |
436 |
root |
1.116 |
PL_retstack_max = 16; |
437 |
root |
1.71 |
#endif |
438 |
root |
1.3 |
} |
439 |
root |
1.1 |
|
440 |
root |
1.7 |
/* |
441 |
|
|
* destroy the stacks, the callchain etc... |
442 |
|
|
*/ |
443 |
root |
1.77 |
static void |
444 |
root |
1.106 |
coro_destroy_stacks () |
445 |
root |
1.1 |
{ |
446 |
root |
1.34 |
if (!IN_DESTRUCT) |
447 |
root |
1.31 |
{ |
448 |
|
|
/* is this ugly, I ask? */ |
449 |
pcg |
1.52 |
LEAVE_SCOPE (0); |
450 |
root |
1.31 |
|
451 |
|
|
/* sure it is, but more important: is it correct?? :/ */ |
452 |
pcg |
1.52 |
FREETMPS; |
453 |
pcg |
1.57 |
|
454 |
|
|
/*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
455 |
root |
1.31 |
} |
456 |
root |
1.7 |
|
457 |
root |
1.4 |
while (PL_curstackinfo->si_next) |
458 |
|
|
PL_curstackinfo = PL_curstackinfo->si_next; |
459 |
|
|
|
460 |
|
|
while (PL_curstackinfo) |
461 |
|
|
{ |
462 |
|
|
PERL_SI *p = PL_curstackinfo->si_prev; |
463 |
|
|
|
464 |
pcg |
1.57 |
{ /*D*//*remove*/ |
465 |
root |
1.7 |
dSP; |
466 |
|
|
SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
467 |
|
|
PUTBACK; /* possibly superfluous */ |
468 |
|
|
} |
469 |
|
|
|
470 |
root |
1.34 |
if (!IN_DESTRUCT) |
471 |
root |
1.31 |
{ |
472 |
pcg |
1.57 |
dounwind (-1);/*D*//*remove*/ |
473 |
|
|
SvREFCNT_dec (PL_curstackinfo->si_stack); |
474 |
root |
1.31 |
} |
475 |
root |
1.7 |
|
476 |
pcg |
1.57 |
Safefree (PL_curstackinfo->si_cxstack); |
477 |
|
|
Safefree (PL_curstackinfo); |
478 |
root |
1.4 |
PL_curstackinfo = p; |
479 |
|
|
} |
480 |
|
|
|
481 |
pcg |
1.57 |
Safefree (PL_tmps_stack); |
482 |
|
|
Safefree (PL_markstack); |
483 |
|
|
Safefree (PL_scopestack); |
484 |
|
|
Safefree (PL_savestack); |
485 |
root |
1.100 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
486 |
pcg |
1.57 |
Safefree (PL_retstack); |
487 |
root |
1.71 |
#endif |
488 |
root |
1.1 |
} |
489 |
|
|
|
490 |
root |
1.13 |
static void |
491 |
root |
1.89 |
setup_coro (struct coro *coro) |
492 |
root |
1.13 |
{ |
493 |
root |
1.89 |
/* |
494 |
|
|
* emulate part of the perl startup here. |
495 |
|
|
*/ |
496 |
root |
1.15 |
|
497 |
root |
1.98 |
coro_init_stacks (); |
498 |
root |
1.15 |
|
499 |
root |
1.117 |
PL_curcop = &PL_compiling; |
500 |
|
|
PL_in_eval = EVAL_NULL; |
501 |
|
|
PL_curpm = 0; |
502 |
|
|
PL_localizing = 0; |
503 |
|
|
PL_dirty = 0; |
504 |
|
|
PL_restartop = 0; |
505 |
root |
1.103 |
|
506 |
root |
1.102 |
{ |
507 |
|
|
dSP; |
508 |
|
|
LOGOP myop; |
509 |
|
|
|
510 |
|
|
SvREFCNT_dec (GvAV (PL_defgv)); |
511 |
|
|
GvAV (PL_defgv) = coro->args; coro->args = 0; |
512 |
|
|
|
513 |
|
|
Zero (&myop, 1, LOGOP); |
514 |
|
|
myop.op_next = Nullop; |
515 |
|
|
myop.op_flags = OPf_WANT_VOID; |
516 |
root |
1.89 |
|
517 |
root |
1.102 |
PUSHMARK (SP); |
518 |
root |
1.107 |
XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
519 |
root |
1.102 |
PUTBACK; |
520 |
root |
1.120 |
PL_op = (OP *)&myop; |
521 |
root |
1.102 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
522 |
|
|
SPAGAIN; |
523 |
root |
1.117 |
} |
524 |
root |
1.15 |
|
525 |
root |
1.117 |
ENTER; /* necessary e.g. for dounwind */ |
526 |
root |
1.13 |
} |
527 |
|
|
|
528 |
|
|
static void |
529 |
root |
1.92 |
free_coro_mortal () |
530 |
root |
1.13 |
{ |
531 |
root |
1.89 |
if (coro_mortal) |
532 |
root |
1.15 |
{ |
533 |
root |
1.89 |
SvREFCNT_dec (coro_mortal); |
534 |
|
|
coro_mortal = 0; |
535 |
|
|
} |
536 |
root |
1.13 |
} |
537 |
|
|
|
538 |
root |
1.120 |
/* inject a fake call to Coro::State::_cctx_init into the execution */ |
539 |
root |
1.100 |
static void NOINLINE |
540 |
root |
1.106 |
prepare_cctx (coro_cctx *cctx) |
541 |
root |
1.99 |
{ |
542 |
|
|
dSP; |
543 |
root |
1.102 |
LOGOP myop; |
544 |
root |
1.99 |
|
545 |
root |
1.102 |
Zero (&myop, 1, LOGOP); |
546 |
root |
1.99 |
myop.op_next = PL_op; |
547 |
root |
1.120 |
myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
548 |
root |
1.102 |
|
549 |
|
|
PUSHMARK (SP); |
550 |
root |
1.120 |
EXTEND (SP, 2); |
551 |
|
|
PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
552 |
|
|
PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
553 |
root |
1.99 |
PUTBACK; |
554 |
root |
1.120 |
PL_op = (OP *)&myop; |
555 |
|
|
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
556 |
root |
1.99 |
SPAGAIN; |
557 |
|
|
} |
558 |
|
|
|
559 |
|
|
static void |
560 |
root |
1.89 |
coro_run (void *arg) |
561 |
root |
1.13 |
{ |
562 |
root |
1.120 |
/* coro_run is the alternative tail of transfer(), so unlock here. */ |
563 |
root |
1.102 |
UNLOCK; |
564 |
|
|
|
565 |
root |
1.13 |
/* |
566 |
root |
1.89 |
* this is a _very_ stripped down perl interpreter ;) |
567 |
root |
1.13 |
*/ |
568 |
root |
1.93 |
PL_top_env = &PL_start_env; |
569 |
root |
1.107 |
|
570 |
root |
1.102 |
/* inject call to cctx_init */ |
571 |
root |
1.106 |
prepare_cctx ((coro_cctx *)arg); |
572 |
root |
1.89 |
|
573 |
root |
1.94 |
/* somebody will hit me for both perl_run and PL_restartop */ |
574 |
root |
1.120 |
PL_restartop = PL_op; |
575 |
root |
1.102 |
perl_run (PL_curinterp); |
576 |
root |
1.89 |
|
577 |
root |
1.105 |
fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
578 |
root |
1.89 |
abort (); |
579 |
|
|
} |
580 |
|
|
|
581 |
root |
1.106 |
static coro_cctx * |
582 |
|
|
cctx_new () |
583 |
root |
1.89 |
{ |
584 |
root |
1.106 |
coro_cctx *cctx; |
585 |
root |
1.89 |
|
586 |
root |
1.107 |
++cctx_count; |
587 |
|
|
|
588 |
root |
1.106 |
New (0, cctx, 1, coro_cctx); |
589 |
root |
1.89 |
|
590 |
|
|
#if HAVE_MMAP |
591 |
root |
1.13 |
|
592 |
root |
1.106 |
cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
593 |
root |
1.120 |
/* mmap supposedly does allocate-on-write for us */ |
594 |
root |
1.106 |
cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
595 |
root |
1.19 |
|
596 |
root |
1.106 |
if (cctx->sptr == (void *)-1) |
597 |
root |
1.13 |
{ |
598 |
root |
1.92 |
perror ("FATAL: unable to mmap stack for coroutine"); |
599 |
root |
1.89 |
_exit (EXIT_FAILURE); |
600 |
|
|
} |
601 |
root |
1.15 |
|
602 |
root |
1.94 |
# if STACKGUARD |
603 |
root |
1.106 |
mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
604 |
root |
1.94 |
# endif |
605 |
root |
1.19 |
|
606 |
root |
1.89 |
#else |
607 |
|
|
|
608 |
root |
1.106 |
cctx->ssize = STACKSIZE * (long)sizeof (long); |
609 |
|
|
New (0, cctx->sptr, STACKSIZE, long); |
610 |
root |
1.89 |
|
611 |
root |
1.106 |
if (!cctx->sptr) |
612 |
root |
1.89 |
{ |
613 |
root |
1.106 |
perror ("FATAL: unable to malloc stack for coroutine"); |
614 |
root |
1.89 |
_exit (EXIT_FAILURE); |
615 |
root |
1.13 |
} |
616 |
|
|
|
617 |
root |
1.89 |
#endif |
618 |
|
|
|
619 |
root |
1.104 |
#if USE_VALGRIND |
620 |
root |
1.106 |
cctx->valgrind_id = VALGRIND_STACK_REGISTER ( |
621 |
|
|
STACKGUARD * PAGESIZE + (char *)cctx->sptr, |
622 |
|
|
cctx->ssize + (char *)cctx->sptr |
623 |
root |
1.104 |
); |
624 |
|
|
#endif |
625 |
|
|
|
626 |
root |
1.106 |
coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize); |
627 |
root |
1.13 |
|
628 |
root |
1.106 |
return cctx; |
629 |
root |
1.13 |
} |
630 |
|
|
|
631 |
root |
1.15 |
static void |
632 |
root |
1.115 |
cctx_destroy (coro_cctx *cctx) |
633 |
root |
1.15 |
{ |
634 |
root |
1.106 |
if (!cctx) |
635 |
root |
1.89 |
return; |
636 |
|
|
|
637 |
root |
1.107 |
--cctx_count; |
638 |
|
|
|
639 |
root |
1.104 |
#if USE_VALGRIND |
640 |
root |
1.106 |
VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
641 |
root |
1.104 |
#endif |
642 |
|
|
|
643 |
root |
1.89 |
#if HAVE_MMAP |
644 |
root |
1.106 |
munmap (cctx->sptr, cctx->ssize); |
645 |
root |
1.89 |
#else |
646 |
root |
1.106 |
Safefree (cctx->sptr); |
647 |
root |
1.89 |
#endif |
648 |
|
|
|
649 |
root |
1.106 |
Safefree (cctx); |
650 |
root |
1.89 |
} |
651 |
root |
1.32 |
|
652 |
root |
1.106 |
static coro_cctx * |
653 |
|
|
cctx_get () |
654 |
root |
1.89 |
{ |
655 |
root |
1.106 |
coro_cctx *cctx; |
656 |
root |
1.91 |
|
657 |
root |
1.106 |
if (cctx_first) |
658 |
root |
1.89 |
{ |
659 |
root |
1.106 |
cctx = cctx_first; |
660 |
|
|
cctx_first = cctx->next; |
661 |
root |
1.115 |
--cctx_idle; |
662 |
root |
1.89 |
} |
663 |
|
|
else |
664 |
root |
1.91 |
{ |
665 |
root |
1.106 |
cctx = cctx_new (); |
666 |
root |
1.91 |
PL_op = PL_op->op_next; |
667 |
|
|
} |
668 |
|
|
|
669 |
root |
1.106 |
return cctx; |
670 |
root |
1.89 |
} |
671 |
root |
1.19 |
|
672 |
root |
1.89 |
static void |
673 |
root |
1.106 |
cctx_put (coro_cctx *cctx) |
674 |
root |
1.89 |
{ |
675 |
root |
1.115 |
/* free another cctx if overlimit */ |
676 |
|
|
if (cctx_idle >= MAX_IDLE_CCTX) |
677 |
|
|
{ |
678 |
|
|
coro_cctx *first = cctx_first; |
679 |
|
|
cctx_first = first->next; |
680 |
|
|
--cctx_idle; |
681 |
|
|
|
682 |
|
|
assert (!first->inuse); |
683 |
|
|
cctx_destroy (first); |
684 |
|
|
} |
685 |
|
|
|
686 |
root |
1.102 |
++cctx_idle; |
687 |
root |
1.106 |
cctx->next = cctx_first; |
688 |
|
|
cctx_first = cctx; |
689 |
root |
1.15 |
} |
690 |
|
|
|
691 |
root |
1.84 |
/* never call directly, always through the coro_state_transfer global variable */ |
692 |
root |
1.100 |
static void NOINLINE |
693 |
|
|
transfer (struct coro *prev, struct coro *next, int flags) |
694 |
root |
1.8 |
{ |
695 |
root |
1.15 |
dSTACKLEVEL; |
696 |
root |
1.8 |
|
697 |
root |
1.89 |
/* sometimes transfer is only called to set idle_sp */ |
698 |
root |
1.92 |
if (flags == TRANSFER_SET_STACKLEVEL) |
699 |
root |
1.106 |
((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
700 |
root |
1.92 |
else if (prev != next) |
701 |
root |
1.8 |
{ |
702 |
root |
1.106 |
coro_cctx *prev__cctx; |
703 |
root |
1.89 |
|
704 |
root |
1.117 |
if (prev->flags & CF_NEW) |
705 |
root |
1.111 |
{ |
706 |
|
|
/* create a new empty context */ |
707 |
|
|
Newz (0, prev->cctx, 1, coro_cctx); |
708 |
|
|
prev->cctx->inuse = 1; |
709 |
root |
1.117 |
prev->flags &= ~CF_NEW; |
710 |
|
|
prev->flags |= CF_RUNNING; |
711 |
root |
1.111 |
} |
712 |
|
|
|
713 |
root |
1.117 |
/*TODO: must not croak here */ |
714 |
root |
1.112 |
if (!prev->flags & CF_RUNNING) |
715 |
|
|
croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
716 |
|
|
|
717 |
|
|
if (next->flags & CF_RUNNING) |
718 |
|
|
croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
719 |
root |
1.111 |
|
720 |
|
|
prev->flags &= ~CF_RUNNING; |
721 |
|
|
next->flags |= CF_RUNNING; |
722 |
|
|
|
723 |
root |
1.92 |
LOCK; |
724 |
root |
1.13 |
|
725 |
root |
1.118 |
if (next->flags & CF_NEW) |
726 |
root |
1.90 |
{ |
727 |
|
|
/* need to start coroutine */ |
728 |
root |
1.117 |
next->flags &= ~CF_NEW; |
729 |
root |
1.89 |
/* first get rid of the old state */ |
730 |
|
|
SAVE (prev, -1); |
731 |
|
|
/* setup coroutine call */ |
732 |
|
|
setup_coro (next); |
733 |
root |
1.112 |
/* need a new stack */ |
734 |
root |
1.111 |
assert (!next->stack); |
735 |
root |
1.8 |
} |
736 |
root |
1.118 |
else |
737 |
|
|
{ |
738 |
|
|
/* coroutine already started */ |
739 |
|
|
SAVE (prev, flags); |
740 |
|
|
LOAD (next); |
741 |
|
|
} |
742 |
root |
1.15 |
|
743 |
root |
1.106 |
prev__cctx = prev->cctx; |
744 |
root |
1.92 |
|
745 |
root |
1.106 |
/* possibly "free" the cctx */ |
746 |
root |
1.119 |
if (prev__cctx->idle_sp == STACKLEVEL) |
747 |
root |
1.92 |
{ |
748 |
root |
1.114 |
/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
749 |
root |
1.112 |
assert (PL_top_env == prev__cctx->top_env); |
750 |
|
|
|
751 |
root |
1.117 |
prev->cctx = 0; |
752 |
|
|
|
753 |
root |
1.106 |
cctx_put (prev__cctx); |
754 |
root |
1.117 |
prev__cctx->inuse = 0; |
755 |
root |
1.92 |
} |
756 |
|
|
|
757 |
root |
1.106 |
if (!next->cctx) |
758 |
root |
1.92 |
{ |
759 |
root |
1.117 |
next->cctx = cctx_get (); |
760 |
root |
1.111 |
assert (!next->cctx->inuse); |
761 |
|
|
next->cctx->inuse = 1; |
762 |
root |
1.117 |
} |
763 |
root |
1.111 |
|
764 |
root |
1.117 |
if (prev__cctx != next->cctx) |
765 |
|
|
{ |
766 |
root |
1.106 |
prev__cctx->top_env = PL_top_env; |
767 |
|
|
PL_top_env = next->cctx->top_env; |
768 |
|
|
coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
769 |
root |
1.92 |
} |
770 |
|
|
|
771 |
|
|
free_coro_mortal (); |
772 |
|
|
|
773 |
|
|
UNLOCK; |
774 |
root |
1.8 |
} |
775 |
root |
1.39 |
} |
776 |
root |
1.23 |
|
777 |
root |
1.92 |
struct transfer_args |
778 |
|
|
{ |
779 |
|
|
struct coro *prev, *next; |
780 |
|
|
int flags; |
781 |
|
|
}; |
782 |
|
|
|
783 |
root |
1.100 |
#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) |
784 |
root |
1.92 |
|
785 |
root |
1.87 |
static void |
786 |
|
|
coro_state_destroy (struct coro *coro) |
787 |
|
|
{ |
788 |
|
|
if (coro->refcnt--) |
789 |
|
|
return; |
790 |
|
|
|
791 |
|
|
if (coro->mainstack && coro->mainstack != main_mainstack) |
792 |
|
|
{ |
793 |
|
|
struct coro temp; |
794 |
|
|
|
795 |
root |
1.117 |
if (coro->flags & CF_RUNNING) |
796 |
|
|
croak ("FATAL: tried to destroy currently running coroutine"); |
797 |
|
|
|
798 |
root |
1.98 |
SAVE ((&temp), TRANSFER_SAVE_ALL); |
799 |
|
|
LOAD (coro); |
800 |
root |
1.87 |
|
801 |
root |
1.102 |
coro_destroy_stacks (); |
802 |
root |
1.87 |
|
803 |
|
|
LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
804 |
|
|
|
805 |
|
|
coro->mainstack = 0; |
806 |
|
|
} |
807 |
|
|
|
808 |
root |
1.115 |
cctx_destroy (coro->cctx); |
809 |
root |
1.87 |
SvREFCNT_dec (coro->args); |
810 |
|
|
Safefree (coro); |
811 |
|
|
} |
812 |
|
|
|
813 |
|
|
static int |
814 |
root |
1.98 |
coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
815 |
root |
1.87 |
{ |
816 |
|
|
struct coro *coro = (struct coro *)mg->mg_ptr; |
817 |
|
|
mg->mg_ptr = 0; |
818 |
|
|
|
819 |
|
|
coro_state_destroy (coro); |
820 |
|
|
|
821 |
|
|
return 0; |
822 |
|
|
} |
823 |
|
|
|
824 |
|
|
static int |
825 |
root |
1.98 |
coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
826 |
root |
1.87 |
{ |
827 |
|
|
struct coro *coro = (struct coro *)mg->mg_ptr; |
828 |
|
|
|
829 |
|
|
++coro->refcnt; |
830 |
|
|
|
831 |
|
|
return 0; |
832 |
|
|
} |
833 |
|
|
|
834 |
root |
1.100 |
static MGVTBL coro_state_vtbl = { |
835 |
|
|
0, 0, 0, 0, |
836 |
|
|
coro_state_clear, |
837 |
|
|
0, |
838 |
|
|
#ifdef MGf_DUP |
839 |
|
|
coro_state_dup, |
840 |
root |
1.102 |
#else |
841 |
|
|
# define MGf_DUP 0 |
842 |
root |
1.100 |
#endif |
843 |
|
|
}; |
844 |
root |
1.87 |
|
845 |
|
|
static struct coro * |
846 |
|
|
SvSTATE (SV *coro) |
847 |
|
|
{ |
848 |
root |
1.88 |
HV *stash; |
849 |
|
|
MAGIC *mg; |
850 |
|
|
|
851 |
|
|
if (SvROK (coro)) |
852 |
|
|
coro = SvRV (coro); |
853 |
|
|
|
854 |
|
|
stash = SvSTASH (coro); |
855 |
|
|
if (stash != coro_stash && stash != coro_state_stash) |
856 |
|
|
{ |
857 |
|
|
/* very slow, but rare, check */ |
858 |
|
|
if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
859 |
|
|
croak ("Coro::State object required"); |
860 |
|
|
} |
861 |
|
|
|
862 |
|
|
mg = SvMAGIC (coro); |
863 |
root |
1.87 |
assert (mg->mg_type == PERL_MAGIC_ext); |
864 |
|
|
return (struct coro *)mg->mg_ptr; |
865 |
|
|
} |
866 |
root |
1.23 |
|
867 |
|
|
static void |
868 |
root |
1.98 |
prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
869 |
root |
1.23 |
{ |
870 |
root |
1.92 |
ta->prev = SvSTATE (prev); |
871 |
|
|
ta->next = SvSTATE (next); |
872 |
|
|
ta->flags = flags; |
873 |
|
|
} |
874 |
|
|
|
875 |
|
|
static void |
876 |
|
|
api_transfer (SV *prev, SV *next, int flags) |
877 |
|
|
{ |
878 |
|
|
struct transfer_args ta; |
879 |
|
|
|
880 |
root |
1.98 |
prepare_transfer (&ta, prev, next, flags); |
881 |
root |
1.92 |
TRANSFER (ta); |
882 |
root |
1.21 |
} |
883 |
|
|
|
884 |
root |
1.22 |
/** Coro ********************************************************************/ |
885 |
|
|
|
886 |
|
|
#define PRIO_MAX 3 |
887 |
|
|
#define PRIO_HIGH 1 |
888 |
|
|
#define PRIO_NORMAL 0 |
889 |
|
|
#define PRIO_LOW -1 |
890 |
|
|
#define PRIO_IDLE -3 |
891 |
|
|
#define PRIO_MIN -4 |
892 |
|
|
|
893 |
|
|
/* for Coro.pm */ |
894 |
root |
1.117 |
static SV *coro_current; |
895 |
root |
1.83 |
static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
896 |
root |
1.25 |
static int coro_nready; |
897 |
root |
1.22 |
|
898 |
|
|
static void |
899 |
root |
1.112 |
coro_enq (SV *coro_sv) |
900 |
root |
1.22 |
{ |
901 |
root |
1.112 |
av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
902 |
root |
1.73 |
coro_nready++; |
903 |
root |
1.22 |
} |
904 |
|
|
|
905 |
|
|
static SV * |
906 |
root |
1.98 |
coro_deq (int min_prio) |
907 |
root |
1.22 |
{ |
908 |
|
|
int prio = PRIO_MAX - PRIO_MIN; |
909 |
|
|
|
910 |
|
|
min_prio -= PRIO_MIN; |
911 |
|
|
if (min_prio < 0) |
912 |
|
|
min_prio = 0; |
913 |
|
|
|
914 |
|
|
for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
915 |
root |
1.83 |
if (AvFILLp (coro_ready [prio]) >= 0) |
916 |
root |
1.25 |
{ |
917 |
|
|
coro_nready--; |
918 |
root |
1.83 |
return av_shift (coro_ready [prio]); |
919 |
root |
1.25 |
} |
920 |
root |
1.22 |
|
921 |
|
|
return 0; |
922 |
|
|
} |
923 |
|
|
|
924 |
root |
1.111 |
static int |
925 |
|
|
api_ready (SV *coro_sv) |
926 |
root |
1.23 |
{ |
927 |
root |
1.111 |
struct coro *coro; |
928 |
|
|
|
929 |
|
|
if (SvROK (coro_sv)) |
930 |
|
|
coro_sv = SvRV (coro_sv); |
931 |
|
|
|
932 |
|
|
coro = SvSTATE (coro_sv); |
933 |
root |
1.112 |
|
934 |
root |
1.111 |
if (coro->flags & CF_READY) |
935 |
|
|
return 0; |
936 |
pcg |
1.56 |
|
937 |
root |
1.117 |
#if 0 /* this is actually harmless */ |
938 |
root |
1.112 |
if (coro->flags & CF_RUNNING) |
939 |
|
|
croak ("Coro::ready called on currently running coroutine"); |
940 |
root |
1.117 |
#endif |
941 |
root |
1.112 |
|
942 |
root |
1.111 |
coro->flags |= CF_READY; |
943 |
root |
1.39 |
|
944 |
pcg |
1.55 |
LOCK; |
945 |
root |
1.111 |
coro_enq (SvREFCNT_inc (coro_sv)); |
946 |
pcg |
1.55 |
UNLOCK; |
947 |
root |
1.111 |
|
948 |
|
|
return 1; |
949 |
|
|
} |
950 |
|
|
|
951 |
|
|
static int |
952 |
|
|
api_is_ready (SV *coro_sv) |
953 |
|
|
{ |
954 |
root |
1.112 |
return !!SvSTATE (coro_sv)->flags & CF_READY; |
955 |
root |
1.23 |
} |
956 |
|
|
|
957 |
|
|
static void |
958 |
root |
1.98 |
prepare_schedule (struct transfer_args *ta) |
959 |
root |
1.23 |
{ |
960 |
root |
1.117 |
SV *prev, *next; |
961 |
root |
1.88 |
|
962 |
|
|
for (;;) |
963 |
|
|
{ |
964 |
|
|
LOCK; |
965 |
root |
1.98 |
next = coro_deq (PRIO_MIN); |
966 |
root |
1.99 |
UNLOCK; |
967 |
root |
1.88 |
|
968 |
|
|
if (next) |
969 |
|
|
break; |
970 |
root |
1.23 |
|
971 |
root |
1.88 |
{ |
972 |
|
|
dSP; |
973 |
|
|
|
974 |
|
|
ENTER; |
975 |
|
|
SAVETMPS; |
976 |
pcg |
1.55 |
|
977 |
root |
1.88 |
PUSHMARK (SP); |
978 |
|
|
PUTBACK; |
979 |
root |
1.117 |
call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
980 |
root |
1.23 |
|
981 |
root |
1.88 |
FREETMPS; |
982 |
|
|
LEAVE; |
983 |
|
|
} |
984 |
|
|
} |
985 |
|
|
|
986 |
root |
1.117 |
prev = SvRV (coro_current); |
987 |
|
|
SvRV_set (coro_current, next); |
988 |
root |
1.23 |
|
989 |
root |
1.40 |
/* free this only after the transfer */ |
990 |
root |
1.99 |
LOCK; |
991 |
root |
1.92 |
free_coro_mortal (); |
992 |
root |
1.99 |
UNLOCK; |
993 |
root |
1.39 |
coro_mortal = prev; |
994 |
root |
1.23 |
|
995 |
root |
1.117 |
assert (!SvROK(prev));//D |
996 |
|
|
assert (!SvROK(next));//D |
997 |
|
|
|
998 |
|
|
ta->prev = SvSTATE (prev); |
999 |
|
|
ta->next = SvSTATE (next); |
1000 |
root |
1.92 |
ta->flags = TRANSFER_SAVE_ALL; |
1001 |
root |
1.111 |
|
1002 |
root |
1.117 |
assert (ta->flags & CF_READY); |
1003 |
root |
1.111 |
ta->next->flags &= ~CF_READY; |
1004 |
root |
1.92 |
} |
1005 |
|
|
|
1006 |
|
|
static void |
1007 |
root |
1.98 |
prepare_cede (struct transfer_args *ta) |
1008 |
root |
1.92 |
{ |
1009 |
root |
1.117 |
api_ready (coro_current); |
1010 |
pcg |
1.55 |
|
1011 |
root |
1.92 |
prepare_schedule (ta); |
1012 |
root |
1.39 |
} |
1013 |
|
|
|
1014 |
root |
1.92 |
static void |
1015 |
|
|
api_schedule (void) |
1016 |
|
|
{ |
1017 |
|
|
struct transfer_args ta; |
1018 |
|
|
|
1019 |
|
|
prepare_schedule (&ta); |
1020 |
|
|
TRANSFER (ta); |
1021 |
|
|
} |
1022 |
root |
1.89 |
|
1023 |
root |
1.39 |
static void |
1024 |
|
|
api_cede (void) |
1025 |
|
|
{ |
1026 |
root |
1.92 |
struct transfer_args ta; |
1027 |
root |
1.89 |
|
1028 |
root |
1.92 |
prepare_cede (&ta); |
1029 |
|
|
TRANSFER (ta); |
1030 |
root |
1.23 |
} |
1031 |
|
|
|
1032 |
root |
1.3 |
MODULE = Coro::State PACKAGE = Coro::State |
1033 |
root |
1.1 |
|
1034 |
root |
1.87 |
PROTOTYPES: DISABLE |
1035 |
root |
1.1 |
|
1036 |
root |
1.3 |
BOOT: |
1037 |
root |
1.88 |
{ |
1038 |
pcg |
1.55 |
#ifdef USE_ITHREADS |
1039 |
|
|
MUTEX_INIT (&coro_mutex); |
1040 |
|
|
#endif |
1041 |
root |
1.78 |
BOOT_PAGESIZE; |
1042 |
pcg |
1.55 |
|
1043 |
root |
1.14 |
coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1044 |
root |
1.7 |
|
1045 |
root |
1.13 |
newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1046 |
|
|
newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1047 |
|
|
newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1048 |
root |
1.7 |
|
1049 |
root |
1.12 |
main_mainstack = PL_mainstack; |
1050 |
root |
1.23 |
|
1051 |
root |
1.26 |
coroapi.ver = CORO_API_VERSION; |
1052 |
|
|
coroapi.transfer = api_transfer; |
1053 |
root |
1.87 |
|
1054 |
|
|
assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1055 |
root |
1.9 |
} |
1056 |
root |
1.3 |
|
1057 |
root |
1.87 |
SV * |
1058 |
root |
1.86 |
new (char *klass, ...) |
1059 |
root |
1.1 |
CODE: |
1060 |
root |
1.86 |
{ |
1061 |
root |
1.87 |
struct coro *coro; |
1062 |
|
|
HV *hv; |
1063 |
root |
1.86 |
int i; |
1064 |
|
|
|
1065 |
pcg |
1.47 |
Newz (0, coro, 1, struct coro); |
1066 |
root |
1.86 |
coro->args = newAV (); |
1067 |
root |
1.117 |
coro->flags = CF_NEW; |
1068 |
root |
1.86 |
|
1069 |
root |
1.89 |
hv = newHV (); |
1070 |
|
|
sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1071 |
|
|
RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1072 |
|
|
|
1073 |
root |
1.86 |
for (i = 1; i < items; i++) |
1074 |
|
|
av_push (coro->args, newSVsv (ST (i))); |
1075 |
|
|
} |
1076 |
root |
1.1 |
OUTPUT: |
1077 |
|
|
RETVAL |
1078 |
|
|
|
1079 |
|
|
void |
1080 |
root |
1.94 |
_set_stacklevel (...) |
1081 |
root |
1.92 |
ALIAS: |
1082 |
root |
1.94 |
Coro::State::transfer = 1 |
1083 |
|
|
Coro::schedule = 2 |
1084 |
|
|
Coro::cede = 3 |
1085 |
root |
1.1 |
CODE: |
1086 |
root |
1.87 |
{ |
1087 |
root |
1.92 |
struct transfer_args ta; |
1088 |
root |
1.1 |
|
1089 |
root |
1.92 |
switch (ix) |
1090 |
root |
1.1 |
{ |
1091 |
root |
1.92 |
case 0: |
1092 |
root |
1.106 |
ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1093 |
root |
1.94 |
ta.next = 0; |
1094 |
|
|
ta.flags = TRANSFER_SET_STACKLEVEL; |
1095 |
|
|
break; |
1096 |
|
|
|
1097 |
|
|
case 1: |
1098 |
root |
1.92 |
if (items != 3) |
1099 |
root |
1.117 |
croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items); |
1100 |
root |
1.92 |
|
1101 |
|
|
prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
1102 |
|
|
break; |
1103 |
|
|
|
1104 |
root |
1.94 |
case 2: |
1105 |
root |
1.92 |
prepare_schedule (&ta); |
1106 |
|
|
break; |
1107 |
|
|
|
1108 |
root |
1.94 |
case 3: |
1109 |
root |
1.92 |
prepare_cede (&ta); |
1110 |
|
|
break; |
1111 |
|
|
} |
1112 |
root |
1.1 |
|
1113 |
root |
1.92 |
TRANSFER (ta); |
1114 |
root |
1.87 |
} |
1115 |
root |
1.1 |
|
1116 |
root |
1.87 |
void |
1117 |
|
|
_clone_state_from (SV *dst, SV *src) |
1118 |
|
|
CODE: |
1119 |
|
|
{ |
1120 |
|
|
struct coro *coro_src = SvSTATE (src); |
1121 |
root |
1.13 |
|
1122 |
root |
1.87 |
sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
1123 |
root |
1.13 |
|
1124 |
root |
1.87 |
++coro_src->refcnt; |
1125 |
|
|
sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
1126 |
|
|
} |
1127 |
root |
1.12 |
|
1128 |
root |
1.7 |
void |
1129 |
root |
1.87 |
_exit (code) |
1130 |
root |
1.20 |
int code |
1131 |
|
|
PROTOTYPE: $ |
1132 |
|
|
CODE: |
1133 |
|
|
_exit (code); |
1134 |
root |
1.1 |
|
1135 |
root |
1.106 |
int |
1136 |
|
|
cctx_count () |
1137 |
|
|
CODE: |
1138 |
|
|
RETVAL = cctx_count; |
1139 |
|
|
OUTPUT: |
1140 |
|
|
RETVAL |
1141 |
|
|
|
1142 |
|
|
int |
1143 |
|
|
cctx_idle () |
1144 |
|
|
CODE: |
1145 |
|
|
RETVAL = cctx_idle; |
1146 |
|
|
OUTPUT: |
1147 |
|
|
RETVAL |
1148 |
|
|
|
1149 |
root |
1.21 |
MODULE = Coro::State PACKAGE = Coro |
1150 |
|
|
|
1151 |
|
|
BOOT: |
1152 |
|
|
{ |
1153 |
root |
1.22 |
int i; |
1154 |
|
|
|
1155 |
root |
1.88 |
coro_stash = gv_stashpv ("Coro", TRUE); |
1156 |
|
|
|
1157 |
|
|
newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1158 |
|
|
newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1159 |
|
|
newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1160 |
|
|
newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1161 |
|
|
newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1162 |
|
|
newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1163 |
root |
1.22 |
|
1164 |
root |
1.117 |
coro_current = get_sv ("Coro::current", FALSE); |
1165 |
|
|
SvREADONLY_on (coro_current); |
1166 |
root |
1.22 |
|
1167 |
|
|
for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1168 |
|
|
coro_ready[i] = newAV (); |
1169 |
root |
1.26 |
|
1170 |
|
|
{ |
1171 |
|
|
SV *sv = perl_get_sv("Coro::API", 1); |
1172 |
|
|
|
1173 |
|
|
coroapi.schedule = api_schedule; |
1174 |
root |
1.39 |
coroapi.cede = api_cede; |
1175 |
root |
1.26 |
coroapi.ready = api_ready; |
1176 |
root |
1.111 |
coroapi.is_ready = api_is_ready; |
1177 |
root |
1.26 |
coroapi.nready = &coro_nready; |
1178 |
|
|
coroapi.current = coro_current; |
1179 |
|
|
|
1180 |
|
|
GCoroAPI = &coroapi; |
1181 |
root |
1.81 |
sv_setiv (sv, (IV)&coroapi); |
1182 |
|
|
SvREADONLY_on (sv); |
1183 |
root |
1.26 |
} |
1184 |
root |
1.21 |
} |
1185 |
|
|
|
1186 |
root |
1.92 |
int |
1187 |
|
|
prio (Coro::State coro, int newprio = 0) |
1188 |
|
|
ALIAS: |
1189 |
|
|
nice = 1 |
1190 |
|
|
CODE: |
1191 |
|
|
{ |
1192 |
|
|
RETVAL = coro->prio; |
1193 |
|
|
|
1194 |
|
|
if (items > 1) |
1195 |
|
|
{ |
1196 |
|
|
if (ix) |
1197 |
|
|
newprio += coro->prio; |
1198 |
|
|
|
1199 |
|
|
if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1200 |
|
|
if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1201 |
|
|
|
1202 |
|
|
coro->prio = newprio; |
1203 |
|
|
} |
1204 |
|
|
} |
1205 |
|
|
|
1206 |
root |
1.111 |
SV * |
1207 |
root |
1.89 |
ready (SV *self) |
1208 |
root |
1.35 |
PROTOTYPE: $ |
1209 |
root |
1.21 |
CODE: |
1210 |
root |
1.111 |
RETVAL = boolSV (api_ready (self)); |
1211 |
|
|
OUTPUT: |
1212 |
|
|
RETVAL |
1213 |
|
|
|
1214 |
|
|
SV * |
1215 |
|
|
is_ready (SV *self) |
1216 |
|
|
PROTOTYPE: $ |
1217 |
|
|
CODE: |
1218 |
|
|
RETVAL = boolSV (api_is_ready (self)); |
1219 |
|
|
OUTPUT: |
1220 |
|
|
RETVAL |
1221 |
pcg |
1.50 |
|
1222 |
root |
1.25 |
int |
1223 |
root |
1.87 |
nready (...) |
1224 |
root |
1.25 |
PROTOTYPE: |
1225 |
|
|
CODE: |
1226 |
|
|
RETVAL = coro_nready; |
1227 |
|
|
OUTPUT: |
1228 |
|
|
RETVAL |
1229 |
|
|
|
1230 |
root |
1.117 |
void |
1231 |
|
|
_set_current (SV *current) |
1232 |
|
|
PROTOTYPE: $ |
1233 |
|
|
CODE: |
1234 |
|
|
SvREFCNT_dec (SvRV (coro_current)); |
1235 |
|
|
SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1236 |
|
|
|
1237 |
root |
1.89 |
MODULE = Coro::State PACKAGE = Coro::AIO |
1238 |
|
|
|
1239 |
root |
1.70 |
SV * |
1240 |
root |
1.89 |
_get_state () |
1241 |
root |
1.70 |
CODE: |
1242 |
|
|
{ |
1243 |
root |
1.120 |
RETVAL = newSV (sizeof (struct io_state)); |
1244 |
|
|
struct io_state *data = (struct io_state *)SvPVX (RETVAL); |
1245 |
|
|
SvCUR_set (RETVAL, sizeof (struct io_state)); |
1246 |
|
|
SvPOK_only (RETVAL); |
1247 |
|
|
|
1248 |
|
|
data->errorno = errno; |
1249 |
|
|
data->laststype = PL_laststype; |
1250 |
|
|
data->laststatval = PL_laststatval; |
1251 |
|
|
data->statcache = PL_statcache; |
1252 |
root |
1.70 |
} |
1253 |
|
|
OUTPUT: |
1254 |
|
|
RETVAL |
1255 |
|
|
|
1256 |
|
|
void |
1257 |
root |
1.89 |
_set_state (char *data_) |
1258 |
root |
1.70 |
PROTOTYPE: $ |
1259 |
|
|
CODE: |
1260 |
|
|
{ |
1261 |
root |
1.120 |
struct io_state *data = (void *)data_; |
1262 |
root |
1.70 |
|
1263 |
root |
1.120 |
errno = data->errorno; |
1264 |
|
|
PL_laststype = data->laststype; |
1265 |
root |
1.70 |
PL_laststatval = data->laststatval; |
1266 |
root |
1.120 |
PL_statcache = data->statcache; |
1267 |
root |
1.70 |
} |
1268 |
root |
1.120 |
|