1 |
root |
1.63 |
#include "libcoro/coro.c" |
2 |
|
|
|
3 |
root |
1.146 |
#define PERL_NO_GET_CONTEXT |
4 |
|
|
|
5 |
root |
1.1 |
#include "EXTERN.h" |
6 |
|
|
#include "perl.h" |
7 |
|
|
#include "XSUB.h" |
8 |
|
|
|
9 |
pcg |
1.46 |
#include "patchlevel.h" |
10 |
|
|
|
11 |
root |
1.127 |
#include <stdio.h> |
12 |
|
|
#include <errno.h> |
13 |
|
|
#include <assert.h> |
14 |
|
|
|
15 |
|
|
#ifdef HAVE_MMAP |
16 |
|
|
# include <unistd.h> |
17 |
|
|
# include <sys/mman.h> |
18 |
|
|
# ifndef MAP_ANONYMOUS |
19 |
|
|
# ifdef MAP_ANON |
20 |
|
|
# define MAP_ANONYMOUS MAP_ANON |
21 |
|
|
# else |
22 |
|
|
# undef HAVE_MMAP |
23 |
|
|
# endif |
24 |
|
|
# endif |
25 |
|
|
# include <limits.h> |
26 |
|
|
# ifndef PAGESIZE |
27 |
|
|
# define PAGESIZE pagesize |
28 |
|
|
# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
29 |
|
|
static long pagesize; |
30 |
|
|
# else |
31 |
|
|
# define BOOT_PAGESIZE (void)0 |
32 |
|
|
# endif |
33 |
|
|
#else |
34 |
|
|
# define PAGESIZE 0 |
35 |
|
|
# define BOOT_PAGESIZE (void)0 |
36 |
|
|
#endif |
37 |
|
|
|
38 |
root |
1.143 |
#if CORO_USE_VALGRIND |
39 |
root |
1.104 |
# include <valgrind/valgrind.h> |
40 |
root |
1.141 |
# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end)) |
41 |
|
|
#else |
42 |
|
|
# define REGISTER_STACK(cctx,start,end) |
43 |
root |
1.104 |
#endif |
44 |
|
|
|
45 |
root |
1.115 |
/* the maximum number of idle cctx that will be pooled */ |
46 |
|
|
#define MAX_IDLE_CCTX 8 |
47 |
|
|
|
48 |
root |
1.100 |
#define PERL_VERSION_ATLEAST(a,b,c) \ |
49 |
|
|
(PERL_REVISION > (a) \ |
50 |
|
|
|| (PERL_REVISION == (a) \ |
51 |
|
|
&& (PERL_VERSION > (b) \ |
52 |
|
|
|| (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
53 |
|
|
|
54 |
root |
1.102 |
#if !PERL_VERSION_ATLEAST (5,6,0) |
55 |
pcg |
1.46 |
# ifndef PL_ppaddr |
56 |
|
|
# define PL_ppaddr ppaddr |
57 |
|
|
# endif |
58 |
|
|
# ifndef call_sv |
59 |
|
|
# define call_sv perl_call_sv |
60 |
|
|
# endif |
61 |
|
|
# ifndef get_sv |
62 |
|
|
# define get_sv perl_get_sv |
63 |
|
|
# endif |
64 |
|
|
# ifndef get_cv |
65 |
|
|
# define get_cv perl_get_cv |
66 |
|
|
# endif |
67 |
|
|
# ifndef IS_PADGV |
68 |
|
|
# define IS_PADGV(v) 0 |
69 |
|
|
# endif |
70 |
|
|
# ifndef IS_PADCONST |
71 |
|
|
# define IS_PADCONST(v) 0 |
72 |
|
|
# endif |
73 |
|
|
#endif |
74 |
|
|
|
75 |
root |
1.125 |
/* 5.8.7 */ |
76 |
|
|
#ifndef SvRV_set |
77 |
|
|
# define SvRV_set(s,v) SvRV(s) = (v) |
78 |
|
|
#endif |
79 |
|
|
|
80 |
root |
1.78 |
#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
81 |
root |
1.143 |
# undef CORO_STACKGUARD |
82 |
root |
1.78 |
#endif |
83 |
|
|
|
84 |
root |
1.143 |
#ifndef CORO_STACKGUARD |
85 |
|
|
# define CORO_STACKGUARD 0 |
86 |
root |
1.78 |
#endif |
87 |
|
|
|
88 |
root |
1.127 |
/* prefer perl internal functions over our own? */ |
89 |
root |
1.143 |
#ifndef CORO_PREFER_PERL_FUNCTIONS |
90 |
|
|
# define CORO_PREFER_PERL_FUNCTIONS 0 |
91 |
root |
1.3 |
#endif |
92 |
|
|
|
93 |
root |
1.158 |
/* The next macros try to return the current stack pointer, in an as |
94 |
|
|
* portable way as possible. */ |
95 |
|
|
#define dSTACKLEVEL volatile char stacklevel |
96 |
root |
1.92 |
#define STACKLEVEL ((void *)&stacklevel) |
97 |
root |
1.15 |
|
98 |
root |
1.34 |
#define IN_DESTRUCT (PL_main_cv == Nullcv) |
99 |
|
|
|
100 |
root |
1.100 |
#if __GNUC__ >= 3 |
101 |
|
|
# define attribute(x) __attribute__(x) |
102 |
root |
1.131 |
# define BARRIER __asm__ __volatile__ ("" : : : "memory") |
103 |
root |
1.100 |
#else |
104 |
|
|
# define attribute(x) |
105 |
root |
1.131 |
# define BARRIER |
106 |
root |
1.100 |
#endif |
107 |
|
|
|
108 |
|
|
#define NOINLINE attribute ((noinline)) |
109 |
|
|
|
110 |
root |
1.23 |
#include "CoroAPI.h" |
111 |
|
|
|
112 |
pcg |
1.55 |
#ifdef USE_ITHREADS |
113 |
|
|
static perl_mutex coro_mutex; |
114 |
root |
1.69 |
# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
115 |
pcg |
1.55 |
# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
116 |
|
|
#else |
117 |
root |
1.69 |
# define LOCK (void)0 |
118 |
|
|
# define UNLOCK (void)0 |
119 |
pcg |
1.55 |
#endif |
120 |
|
|
|
121 |
root |
1.136 |
/* helper storage struct for Coro::AIO */ |
122 |
root |
1.120 |
struct io_state |
123 |
|
|
{ |
124 |
|
|
int errorno; |
125 |
|
|
I32 laststype; |
126 |
|
|
int laststatval; |
127 |
|
|
Stat_t statcache; |
128 |
|
|
}; |
129 |
|
|
|
130 |
root |
1.145 |
static size_t coro_stacksize = CORO_STACKSIZE; |
131 |
root |
1.23 |
static struct CoroAPI coroapi; |
132 |
pcg |
1.56 |
static AV *main_mainstack; /* used to differentiate between $main and others */ |
133 |
root |
1.148 |
static JMPENV *main_top_env; |
134 |
root |
1.88 |
static HV *coro_state_stash, *coro_stash; |
135 |
pcg |
1.58 |
static SV *coro_mortal; /* will be freed after next transfer */ |
136 |
root |
1.23 |
|
137 |
root |
1.178 |
static GV *irsgv; /* $/ */ |
138 |
|
|
|
139 |
root |
1.159 |
/* async_pool helper stuff */ |
140 |
|
|
static SV *sv_pool_rss; |
141 |
|
|
static SV *sv_pool_size; |
142 |
|
|
static AV *av_async_pool; |
143 |
|
|
|
144 |
root |
1.107 |
static struct coro_cctx *cctx_first; |
145 |
|
|
static int cctx_count, cctx_idle; |
146 |
|
|
|
147 |
root |
1.165 |
enum { |
148 |
root |
1.167 |
CC_MAPPED = 0x01, |
149 |
|
|
CC_NOREUSE = 0x02, /* throw this away after tracing */ |
150 |
|
|
CC_TRACE = 0x04, |
151 |
|
|
CC_TRACE_SUB = 0x08, /* trace sub calls */ |
152 |
|
|
CC_TRACE_LINE = 0x10, /* trace each statement */ |
153 |
|
|
CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
154 |
root |
1.165 |
}; |
155 |
|
|
|
156 |
root |
1.92 |
/* this is a structure representing a c-level coroutine */ |
157 |
root |
1.106 |
typedef struct coro_cctx { |
158 |
|
|
struct coro_cctx *next; |
159 |
root |
1.15 |
|
160 |
root |
1.93 |
/* the stack */ |
161 |
root |
1.15 |
void *sptr; |
162 |
root |
1.145 |
size_t ssize; |
163 |
root |
1.89 |
|
164 |
|
|
/* cpu state */ |
165 |
root |
1.132 |
void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
166 |
|
|
JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
167 |
root |
1.93 |
JMPENV *top_env; |
168 |
root |
1.89 |
coro_context cctx; |
169 |
root |
1.104 |
|
170 |
root |
1.143 |
#if CORO_USE_VALGRIND |
171 |
root |
1.104 |
int valgrind_id; |
172 |
|
|
#endif |
173 |
root |
1.165 |
unsigned char flags; |
174 |
root |
1.106 |
} coro_cctx; |
175 |
root |
1.15 |
|
176 |
root |
1.111 |
enum { |
177 |
root |
1.133 |
CF_RUNNING = 0x0001, /* coroutine is running */ |
178 |
|
|
CF_READY = 0x0002, /* coroutine is ready */ |
179 |
|
|
CF_NEW = 0x0004, /* has never been switched to */ |
180 |
|
|
CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
181 |
root |
1.111 |
}; |
182 |
|
|
|
183 |
root |
1.92 |
/* this is a structure representing a perl-level coroutine */ |
184 |
root |
1.1 |
struct coro { |
185 |
root |
1.92 |
/* the c coroutine allocated to this perl coroutine, if any */ |
186 |
root |
1.106 |
coro_cctx *cctx; |
187 |
root |
1.92 |
|
188 |
|
|
/* data associated with this coroutine (initial args) */ |
189 |
|
|
AV *args; |
190 |
|
|
int refcnt; |
191 |
root |
1.122 |
int flags; /* CF_ flags */ |
192 |
root |
1.92 |
|
193 |
root |
1.7 |
/* optionally saved, might be zero */ |
194 |
root |
1.122 |
AV *defav; /* @_ */ |
195 |
|
|
SV *defsv; /* $_ */ |
196 |
|
|
SV *errsv; /* $@ */ |
197 |
root |
1.178 |
IO *deffh; /* default filehandle */ |
198 |
root |
1.122 |
SV *irssv; /* $/ */ |
199 |
root |
1.123 |
SV *irssv_sv; /* real $/ cache */ |
200 |
root |
1.1 |
|
201 |
root |
1.108 |
#define VAR(name,type) type name; |
202 |
|
|
# include "state.h" |
203 |
|
|
#undef VAR |
204 |
root |
1.1 |
|
205 |
root |
1.172 |
/* statistics */ |
206 |
|
|
int usecount; /* number of switches to this coro */ |
207 |
|
|
|
208 |
root |
1.87 |
/* coro process data */ |
209 |
|
|
int prio; |
210 |
root |
1.151 |
|
211 |
|
|
/* linked list */ |
212 |
|
|
struct coro *next, *prev; |
213 |
|
|
HV *hv; /* the perl hash associated with this coro, if any */ |
214 |
root |
1.1 |
}; |
215 |
|
|
|
216 |
|
|
typedef struct coro *Coro__State; |
217 |
|
|
typedef struct coro *Coro__State_or_hashref; |
218 |
|
|
|
219 |
root |
1.137 |
/** Coro ********************************************************************/ |
220 |
|
|
|
221 |
|
|
#define PRIO_MAX 3 |
222 |
|
|
#define PRIO_HIGH 1 |
223 |
|
|
#define PRIO_NORMAL 0 |
224 |
|
|
#define PRIO_LOW -1 |
225 |
|
|
#define PRIO_IDLE -3 |
226 |
|
|
#define PRIO_MIN -4 |
227 |
|
|
|
228 |
|
|
/* for Coro.pm */ |
229 |
|
|
static SV *coro_current; |
230 |
|
|
static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
231 |
|
|
static int coro_nready; |
232 |
root |
1.153 |
static struct coro *coro_first; |
233 |
root |
1.137 |
|
234 |
|
|
/** lowlevel stuff **********************************************************/ |
235 |
|
|
|
236 |
root |
1.77 |
static AV * |
237 |
root |
1.146 |
coro_clone_padlist (pTHX_ CV *cv) |
238 |
root |
1.77 |
{ |
239 |
|
|
AV *padlist = CvPADLIST (cv); |
240 |
|
|
AV *newpadlist, *newpad; |
241 |
root |
1.3 |
|
242 |
|
|
newpadlist = newAV (); |
243 |
|
|
AvREAL_off (newpadlist); |
244 |
root |
1.100 |
#if PERL_VERSION_ATLEAST (5,9,0) |
245 |
|
|
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
246 |
|
|
#else |
247 |
root |
1.77 |
Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
248 |
root |
1.79 |
#endif |
249 |
root |
1.77 |
newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
250 |
|
|
--AvFILLp (padlist); |
251 |
root |
1.3 |
|
252 |
root |
1.77 |
av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
253 |
|
|
av_store (newpadlist, 1, (SV *)newpad); |
254 |
root |
1.3 |
|
255 |
|
|
return newpadlist; |
256 |
|
|
} |
257 |
|
|
|
258 |
root |
1.77 |
static void |
259 |
root |
1.146 |
free_padlist (pTHX_ AV *padlist) |
260 |
root |
1.3 |
{ |
261 |
|
|
/* may be during global destruction */ |
262 |
pcg |
1.50 |
if (SvREFCNT (padlist)) |
263 |
root |
1.3 |
{ |
264 |
pcg |
1.50 |
I32 i = AvFILLp (padlist); |
265 |
root |
1.3 |
while (i >= 0) |
266 |
|
|
{ |
267 |
pcg |
1.50 |
SV **svp = av_fetch (padlist, i--, FALSE); |
268 |
|
|
if (svp) |
269 |
|
|
{ |
270 |
|
|
SV *sv; |
271 |
|
|
while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
272 |
|
|
SvREFCNT_dec (sv); |
273 |
|
|
|
274 |
|
|
SvREFCNT_dec (*svp); |
275 |
|
|
} |
276 |
root |
1.3 |
} |
277 |
|
|
|
278 |
pcg |
1.50 |
SvREFCNT_dec ((SV*)padlist); |
279 |
|
|
} |
280 |
|
|
} |
281 |
|
|
|
282 |
root |
1.77 |
static int |
283 |
pcg |
1.54 |
coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
284 |
pcg |
1.50 |
{ |
285 |
|
|
AV *padlist; |
286 |
|
|
AV *av = (AV *)mg->mg_obj; |
287 |
|
|
|
288 |
|
|
/* casting is fun. */ |
289 |
|
|
while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
290 |
root |
1.146 |
free_padlist (aTHX_ padlist); |
291 |
root |
1.61 |
|
292 |
|
|
SvREFCNT_dec (av); |
293 |
root |
1.76 |
|
294 |
|
|
return 0; |
295 |
root |
1.3 |
} |
296 |
pcg |
1.50 |
|
297 |
|
|
#define PERL_MAGIC_coro PERL_MAGIC_ext |
298 |
|
|
|
299 |
|
|
static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
300 |
root |
1.3 |
|
301 |
root |
1.109 |
#define CORO_MAGIC(cv) \ |
302 |
|
|
SvMAGIC (cv) \ |
303 |
|
|
? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
304 |
|
|
? SvMAGIC (cv) \ |
305 |
|
|
: mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
306 |
|
|
: 0 |
307 |
|
|
|
308 |
root |
1.169 |
static struct coro * |
309 |
|
|
SvSTATE_ (pTHX_ SV *coro) |
310 |
|
|
{ |
311 |
|
|
HV *stash; |
312 |
|
|
MAGIC *mg; |
313 |
|
|
|
314 |
|
|
if (SvROK (coro)) |
315 |
|
|
coro = SvRV (coro); |
316 |
|
|
|
317 |
root |
1.172 |
if (SvTYPE (coro) != SVt_PVHV) |
318 |
|
|
croak ("Coro::State object required"); |
319 |
|
|
|
320 |
root |
1.169 |
stash = SvSTASH (coro); |
321 |
|
|
if (stash != coro_stash && stash != coro_state_stash) |
322 |
|
|
{ |
323 |
|
|
/* very slow, but rare, check */ |
324 |
|
|
if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
325 |
|
|
croak ("Coro::State object required"); |
326 |
|
|
} |
327 |
|
|
|
328 |
|
|
mg = CORO_MAGIC (coro); |
329 |
|
|
return (struct coro *)mg->mg_ptr; |
330 |
|
|
} |
331 |
|
|
|
332 |
|
|
#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
333 |
|
|
|
334 |
root |
1.7 |
/* the next two functions merely cache the padlists */ |
335 |
root |
1.77 |
static void |
336 |
root |
1.146 |
get_padlist (pTHX_ CV *cv) |
337 |
root |
1.3 |
{ |
338 |
root |
1.109 |
MAGIC *mg = CORO_MAGIC (cv); |
339 |
|
|
AV *av; |
340 |
root |
1.4 |
|
341 |
root |
1.109 |
if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
342 |
|
|
CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
343 |
root |
1.4 |
else |
344 |
root |
1.77 |
{ |
345 |
root |
1.143 |
#if CORO_PREFER_PERL_FUNCTIONS |
346 |
root |
1.96 |
/* this is probably cleaner, but also slower? */ |
347 |
root |
1.98 |
CV *cp = Perl_cv_clone (cv); |
348 |
root |
1.77 |
CvPADLIST (cv) = CvPADLIST (cp); |
349 |
|
|
CvPADLIST (cp) = 0; |
350 |
|
|
SvREFCNT_dec (cp); |
351 |
|
|
#else |
352 |
root |
1.146 |
CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
353 |
root |
1.77 |
#endif |
354 |
|
|
} |
355 |
root |
1.4 |
} |
356 |
|
|
|
357 |
root |
1.77 |
static void |
358 |
root |
1.146 |
put_padlist (pTHX_ CV *cv) |
359 |
root |
1.4 |
{ |
360 |
root |
1.109 |
MAGIC *mg = CORO_MAGIC (cv); |
361 |
|
|
AV *av; |
362 |
root |
1.7 |
|
363 |
pcg |
1.50 |
if (!mg) |
364 |
root |
1.7 |
{ |
365 |
pcg |
1.50 |
sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
366 |
|
|
mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
367 |
|
|
mg->mg_virtual = &vtbl_coro; |
368 |
|
|
mg->mg_obj = (SV *)newAV (); |
369 |
root |
1.7 |
} |
370 |
|
|
|
371 |
root |
1.109 |
av = (AV *)mg->mg_obj; |
372 |
|
|
|
373 |
|
|
if (AvFILLp (av) >= AvMAX (av)) |
374 |
|
|
av_extend (av, AvMAX (av) + 1); |
375 |
|
|
|
376 |
|
|
AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
377 |
root |
1.7 |
} |
378 |
|
|
|
379 |
root |
1.137 |
/** load & save, init *******************************************************/ |
380 |
|
|
|
381 |
root |
1.7 |
static void |
382 |
root |
1.146 |
load_perl (pTHX_ Coro__State c) |
383 |
root |
1.7 |
{ |
384 |
root |
1.108 |
#define VAR(name,type) PL_ ## name = c->name; |
385 |
|
|
# include "state.h" |
386 |
|
|
#undef VAR |
387 |
root |
1.7 |
|
388 |
root |
1.178 |
GvSV (PL_defgv) = c->defsv; |
389 |
|
|
GvAV (PL_defgv) = c->defav; |
390 |
|
|
GvSV (PL_errgv) = c->errsv; |
391 |
|
|
GvIOp(PL_defoutgv) = c->deffh; |
392 |
|
|
PL_rs = c->irssv; |
393 |
|
|
GvSV (irsgv) = c->irssv_sv; |
394 |
root |
1.7 |
|
395 |
|
|
{ |
396 |
|
|
dSP; |
397 |
|
|
CV *cv; |
398 |
|
|
|
399 |
|
|
/* now do the ugly restore mess */ |
400 |
|
|
while ((cv = (CV *)POPs)) |
401 |
|
|
{ |
402 |
root |
1.146 |
put_padlist (aTHX_ cv); /* mark this padlist as available */ |
403 |
root |
1.109 |
CvDEPTH (cv) = PTR2IV (POPs); |
404 |
|
|
CvPADLIST (cv) = (AV *)POPs; |
405 |
root |
1.7 |
} |
406 |
|
|
|
407 |
|
|
PUTBACK; |
408 |
|
|
} |
409 |
|
|
} |
410 |
|
|
|
411 |
root |
1.3 |
static void |
412 |
root |
1.146 |
save_perl (pTHX_ Coro__State c) |
413 |
root |
1.3 |
{ |
414 |
|
|
{ |
415 |
|
|
dSP; |
416 |
|
|
I32 cxix = cxstack_ix; |
417 |
root |
1.11 |
PERL_CONTEXT *ccstk = cxstack; |
418 |
root |
1.3 |
PERL_SI *top_si = PL_curstackinfo; |
419 |
|
|
|
420 |
|
|
/* |
421 |
|
|
* the worst thing you can imagine happens first - we have to save |
422 |
|
|
* (and reinitialize) all cv's in the whole callchain :( |
423 |
|
|
*/ |
424 |
|
|
|
425 |
root |
1.157 |
XPUSHs (Nullsv); |
426 |
root |
1.3 |
/* this loop was inspired by pp_caller */ |
427 |
|
|
for (;;) |
428 |
|
|
{ |
429 |
root |
1.30 |
while (cxix >= 0) |
430 |
root |
1.3 |
{ |
431 |
root |
1.4 |
PERL_CONTEXT *cx = &ccstk[cxix--]; |
432 |
root |
1.3 |
|
433 |
root |
1.151 |
if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) |
434 |
root |
1.3 |
{ |
435 |
|
|
CV *cv = cx->blk_sub.cv; |
436 |
root |
1.109 |
|
437 |
|
|
if (CvDEPTH (cv)) |
438 |
root |
1.3 |
{ |
439 |
root |
1.109 |
EXTEND (SP, 3); |
440 |
root |
1.117 |
PUSHs ((SV *)CvPADLIST (cv)); |
441 |
root |
1.109 |
PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
442 |
root |
1.3 |
PUSHs ((SV *)cv); |
443 |
|
|
|
444 |
root |
1.109 |
CvDEPTH (cv) = 0; |
445 |
root |
1.146 |
get_padlist (aTHX_ cv); |
446 |
root |
1.3 |
} |
447 |
|
|
} |
448 |
|
|
} |
449 |
|
|
|
450 |
|
|
if (top_si->si_type == PERLSI_MAIN) |
451 |
|
|
break; |
452 |
|
|
|
453 |
|
|
top_si = top_si->si_prev; |
454 |
root |
1.158 |
ccstk = top_si->si_cxstack; |
455 |
|
|
cxix = top_si->si_cxix; |
456 |
root |
1.3 |
} |
457 |
|
|
|
458 |
|
|
PUTBACK; |
459 |
|
|
} |
460 |
|
|
|
461 |
root |
1.178 |
c->defav = GvAV (PL_defgv); |
462 |
|
|
c->defsv = DEFSV; |
463 |
|
|
c->errsv = ERRSV; |
464 |
|
|
c->deffh = GvIOp (PL_defoutgv); |
465 |
|
|
c->irssv = PL_rs; |
466 |
|
|
c->irssv_sv = GvSV (irsgv); |
467 |
root |
1.7 |
|
468 |
root |
1.108 |
#define VAR(name,type)c->name = PL_ ## name; |
469 |
|
|
# include "state.h" |
470 |
|
|
#undef VAR |
471 |
root |
1.13 |
} |
472 |
|
|
|
473 |
|
|
/* |
474 |
|
|
* allocate various perl stacks. This is an exact copy |
475 |
|
|
* of perl.c:init_stacks, except that it uses less memory |
476 |
pcg |
1.52 |
* on the (sometimes correct) assumption that coroutines do |
477 |
|
|
* not usually need a lot of stackspace. |
478 |
root |
1.13 |
*/ |
479 |
root |
1.143 |
#if CORO_PREFER_PERL_FUNCTIONS |
480 |
root |
1.126 |
# define coro_init_stacks init_stacks |
481 |
|
|
#else |
482 |
root |
1.77 |
static void |
483 |
root |
1.146 |
coro_init_stacks (pTHX) |
484 |
root |
1.13 |
{ |
485 |
root |
1.156 |
PL_curstackinfo = new_stackinfo(64, 6); |
486 |
root |
1.13 |
PL_curstackinfo->si_type = PERLSI_MAIN; |
487 |
|
|
PL_curstack = PL_curstackinfo->si_stack; |
488 |
|
|
PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
489 |
|
|
|
490 |
|
|
PL_stack_base = AvARRAY(PL_curstack); |
491 |
|
|
PL_stack_sp = PL_stack_base; |
492 |
|
|
PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
493 |
|
|
|
494 |
root |
1.154 |
New(50,PL_tmps_stack,64,SV*); |
495 |
root |
1.13 |
PL_tmps_floor = -1; |
496 |
|
|
PL_tmps_ix = -1; |
497 |
root |
1.154 |
PL_tmps_max = 64; |
498 |
root |
1.13 |
|
499 |
root |
1.154 |
New(54,PL_markstack,16,I32); |
500 |
root |
1.13 |
PL_markstack_ptr = PL_markstack; |
501 |
root |
1.154 |
PL_markstack_max = PL_markstack + 16; |
502 |
root |
1.13 |
|
503 |
pcg |
1.46 |
#ifdef SET_MARK_OFFSET |
504 |
root |
1.13 |
SET_MARK_OFFSET; |
505 |
pcg |
1.46 |
#endif |
506 |
root |
1.13 |
|
507 |
root |
1.154 |
New(54,PL_scopestack,16,I32); |
508 |
root |
1.13 |
PL_scopestack_ix = 0; |
509 |
root |
1.154 |
PL_scopestack_max = 16; |
510 |
root |
1.13 |
|
511 |
root |
1.155 |
New(54,PL_savestack,64,ANY); |
512 |
root |
1.13 |
PL_savestack_ix = 0; |
513 |
root |
1.155 |
PL_savestack_max = 64; |
514 |
root |
1.13 |
|
515 |
root |
1.100 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
516 |
root |
1.156 |
New(54,PL_retstack,4,OP*); |
517 |
root |
1.13 |
PL_retstack_ix = 0; |
518 |
root |
1.156 |
PL_retstack_max = 4; |
519 |
root |
1.71 |
#endif |
520 |
root |
1.3 |
} |
521 |
root |
1.127 |
#endif |
522 |
root |
1.1 |
|
523 |
root |
1.7 |
/* |
524 |
|
|
* destroy the stacks, the callchain etc... |
525 |
|
|
*/ |
526 |
root |
1.77 |
static void |
527 |
root |
1.146 |
coro_destroy_stacks (pTHX) |
528 |
root |
1.1 |
{ |
529 |
root |
1.4 |
while (PL_curstackinfo->si_next) |
530 |
|
|
PL_curstackinfo = PL_curstackinfo->si_next; |
531 |
|
|
|
532 |
|
|
while (PL_curstackinfo) |
533 |
|
|
{ |
534 |
|
|
PERL_SI *p = PL_curstackinfo->si_prev; |
535 |
|
|
|
536 |
root |
1.34 |
if (!IN_DESTRUCT) |
537 |
root |
1.126 |
SvREFCNT_dec (PL_curstackinfo->si_stack); |
538 |
root |
1.7 |
|
539 |
pcg |
1.57 |
Safefree (PL_curstackinfo->si_cxstack); |
540 |
|
|
Safefree (PL_curstackinfo); |
541 |
root |
1.4 |
PL_curstackinfo = p; |
542 |
|
|
} |
543 |
|
|
|
544 |
pcg |
1.57 |
Safefree (PL_tmps_stack); |
545 |
|
|
Safefree (PL_markstack); |
546 |
|
|
Safefree (PL_scopestack); |
547 |
|
|
Safefree (PL_savestack); |
548 |
root |
1.100 |
#if !PERL_VERSION_ATLEAST (5,9,0) |
549 |
pcg |
1.57 |
Safefree (PL_retstack); |
550 |
root |
1.71 |
#endif |
551 |
root |
1.1 |
} |
552 |
|
|
|
553 |
root |
1.152 |
static size_t |
554 |
root |
1.171 |
coro_rss (pTHX_ struct coro *coro) |
555 |
root |
1.152 |
{ |
556 |
|
|
size_t rss = sizeof (coro); |
557 |
|
|
|
558 |
|
|
if (coro->mainstack) |
559 |
|
|
{ |
560 |
root |
1.153 |
if (coro->flags & CF_RUNNING) |
561 |
|
|
{ |
562 |
|
|
#define VAR(name,type)coro->name = PL_ ## name; |
563 |
|
|
# include "state.h" |
564 |
|
|
#undef VAR |
565 |
|
|
} |
566 |
|
|
|
567 |
root |
1.152 |
rss += sizeof (coro->curstackinfo); |
568 |
|
|
rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *); |
569 |
|
|
rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); |
570 |
|
|
rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); |
571 |
|
|
rss += coro->tmps_max * sizeof (SV *); |
572 |
|
|
rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); |
573 |
|
|
rss += coro->scopestack_max * sizeof (I32); |
574 |
|
|
rss += coro->savestack_max * sizeof (ANY); |
575 |
|
|
|
576 |
|
|
#if !PERL_VERSION_ATLEAST (5,9,0) |
577 |
|
|
rss += coro->retstack_max * sizeof (OP *); |
578 |
|
|
#endif |
579 |
|
|
} |
580 |
|
|
|
581 |
|
|
return rss; |
582 |
|
|
} |
583 |
|
|
|
584 |
root |
1.137 |
/** coroutine stack handling ************************************************/ |
585 |
|
|
|
586 |
root |
1.13 |
static void |
587 |
root |
1.146 |
setup_coro (pTHX_ struct coro *coro) |
588 |
root |
1.13 |
{ |
589 |
root |
1.89 |
/* |
590 |
|
|
* emulate part of the perl startup here. |
591 |
|
|
*/ |
592 |
root |
1.146 |
coro_init_stacks (aTHX); |
593 |
root |
1.15 |
|
594 |
root |
1.169 |
PL_runops = RUNOPS_DEFAULT; |
595 |
root |
1.117 |
PL_curcop = &PL_compiling; |
596 |
|
|
PL_in_eval = EVAL_NULL; |
597 |
root |
1.142 |
PL_comppad = 0; |
598 |
root |
1.117 |
PL_curpm = 0; |
599 |
|
|
PL_localizing = 0; |
600 |
|
|
PL_dirty = 0; |
601 |
|
|
PL_restartop = 0; |
602 |
root |
1.178 |
|
603 |
|
|
GvSV (PL_defgv) = NEWSV (0, 0); |
604 |
|
|
GvAV (PL_defgv) = coro->args; coro->args = 0; |
605 |
|
|
GvSV (PL_errgv) = NEWSV (0, 0); |
606 |
|
|
GvSV (irsgv) = newSVsv (PL_rs); |
607 |
|
|
PL_rs = newSVpvn ("\n", 1); |
608 |
|
|
|
609 |
|
|
{ |
610 |
|
|
IO *io = newIO (); |
611 |
|
|
GvIOp(PL_defoutgv) = io; |
612 |
|
|
IoTYPE (io) = IoTYPE_WRONLY; |
613 |
|
|
IoOFP (io) = IoIFP (io) = PerlIO_stdout (); |
614 |
|
|
IoFLAGS (io) |= IOf_FLUSH; |
615 |
|
|
} |
616 |
root |
1.103 |
|
617 |
root |
1.102 |
{ |
618 |
|
|
dSP; |
619 |
|
|
LOGOP myop; |
620 |
|
|
|
621 |
|
|
Zero (&myop, 1, LOGOP); |
622 |
|
|
myop.op_next = Nullop; |
623 |
|
|
myop.op_flags = OPf_WANT_VOID; |
624 |
root |
1.89 |
|
625 |
root |
1.102 |
PUSHMARK (SP); |
626 |
root |
1.149 |
XPUSHs (av_shift (GvAV (PL_defgv))); |
627 |
root |
1.102 |
PUTBACK; |
628 |
root |
1.120 |
PL_op = (OP *)&myop; |
629 |
root |
1.102 |
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
630 |
|
|
SPAGAIN; |
631 |
root |
1.117 |
} |
632 |
root |
1.15 |
|
633 |
root |
1.117 |
ENTER; /* necessary e.g. for dounwind */ |
634 |
root |
1.13 |
} |
635 |
|
|
|
636 |
|
|
static void |
637 |
root |
1.178 |
destroy_coro (pTHX_ struct coro *coro) |
638 |
|
|
{ |
639 |
|
|
if (!IN_DESTRUCT) |
640 |
|
|
{ |
641 |
|
|
/* restore all saved variables and stuff */ |
642 |
|
|
LEAVE_SCOPE (0); |
643 |
|
|
assert (PL_tmps_floor == -1); |
644 |
|
|
|
645 |
|
|
/* free all temporaries */ |
646 |
|
|
FREETMPS; |
647 |
|
|
assert (PL_tmps_ix == -1); |
648 |
|
|
|
649 |
|
|
/* unwind all extra stacks */ |
650 |
|
|
POPSTACK_TO (PL_mainstack); |
651 |
|
|
|
652 |
|
|
/* unwind main stack */ |
653 |
|
|
dounwind (-1); |
654 |
|
|
} |
655 |
|
|
|
656 |
|
|
SvREFCNT_dec (GvSV (PL_defgv)); |
657 |
|
|
SvREFCNT_dec (GvAV (PL_defgv)); |
658 |
|
|
SvREFCNT_dec (GvSV (PL_errgv)); |
659 |
|
|
SvREFCNT_dec (GvIOp(PL_defoutgv)); |
660 |
|
|
SvREFCNT_dec (PL_rs); |
661 |
|
|
SvREFCNT_dec (GvSV (irsgv)); |
662 |
|
|
|
663 |
|
|
coro_destroy_stacks (aTHX); |
664 |
|
|
} |
665 |
|
|
|
666 |
|
|
static void |
667 |
root |
1.146 |
free_coro_mortal (pTHX) |
668 |
root |
1.13 |
{ |
669 |
root |
1.89 |
if (coro_mortal) |
670 |
root |
1.15 |
{ |
671 |
root |
1.89 |
SvREFCNT_dec (coro_mortal); |
672 |
|
|
coro_mortal = 0; |
673 |
|
|
} |
674 |
root |
1.13 |
} |
675 |
|
|
|
676 |
root |
1.165 |
static int |
677 |
root |
1.169 |
runops_trace (pTHX) |
678 |
root |
1.165 |
{ |
679 |
|
|
COP *oldcop = 0; |
680 |
root |
1.167 |
int oldcxix = -2; |
681 |
root |
1.169 |
struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ |
682 |
|
|
coro_cctx *cctx = coro->cctx; |
683 |
root |
1.165 |
|
684 |
|
|
while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
685 |
|
|
{ |
686 |
|
|
PERL_ASYNC_CHECK (); |
687 |
|
|
|
688 |
root |
1.173 |
if (cctx->flags & CC_TRACE_ALL) |
689 |
root |
1.167 |
{ |
690 |
root |
1.173 |
if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) |
691 |
|
|
{ |
692 |
|
|
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
693 |
|
|
SV **bot, **top; |
694 |
|
|
AV *av = newAV (); /* return values */ |
695 |
|
|
SV **cb; |
696 |
|
|
dSP; |
697 |
root |
1.167 |
|
698 |
root |
1.173 |
GV *gv = CvGV (cx->blk_sub.cv); |
699 |
|
|
SV *fullname = sv_2mortal (newSV (0)); |
700 |
|
|
if (isGV (gv)) |
701 |
|
|
gv_efullname3 (fullname, gv, 0); |
702 |
|
|
|
703 |
|
|
bot = PL_stack_base + cx->blk_oldsp + 1; |
704 |
|
|
top = cx->blk_gimme == G_ARRAY ? SP + 1 |
705 |
|
|
: cx->blk_gimme == G_SCALAR ? bot + 1 |
706 |
|
|
: bot; |
707 |
root |
1.167 |
|
708 |
root |
1.173 |
while (bot < top) |
709 |
|
|
av_push (av, SvREFCNT_inc (*bot++)); |
710 |
root |
1.167 |
|
711 |
root |
1.173 |
PL_runops = RUNOPS_DEFAULT; |
712 |
root |
1.167 |
ENTER; |
713 |
|
|
SAVETMPS; |
714 |
|
|
EXTEND (SP, 3); |
715 |
root |
1.173 |
PUSHMARK (SP); |
716 |
|
|
PUSHs (&PL_sv_no); |
717 |
|
|
PUSHs (fullname); |
718 |
|
|
PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
719 |
|
|
PUTBACK; |
720 |
|
|
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
721 |
|
|
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
722 |
|
|
SPAGAIN; |
723 |
|
|
FREETMPS; |
724 |
|
|
LEAVE; |
725 |
|
|
PL_runops = runops_trace; |
726 |
|
|
} |
727 |
|
|
|
728 |
|
|
if (oldcop != PL_curcop) |
729 |
|
|
{ |
730 |
|
|
oldcop = PL_curcop; |
731 |
root |
1.167 |
|
732 |
root |
1.173 |
if (PL_curcop != &PL_compiling) |
733 |
root |
1.167 |
{ |
734 |
root |
1.173 |
SV **cb; |
735 |
|
|
|
736 |
|
|
if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) |
737 |
|
|
{ |
738 |
|
|
PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
739 |
|
|
|
740 |
|
|
if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
741 |
|
|
{ |
742 |
|
|
runops_proc_t old_runops = PL_runops; |
743 |
|
|
dSP; |
744 |
|
|
GV *gv = CvGV (cx->blk_sub.cv); |
745 |
|
|
SV *fullname = sv_2mortal (newSV (0)); |
746 |
|
|
|
747 |
|
|
if (isGV (gv)) |
748 |
|
|
gv_efullname3 (fullname, gv, 0); |
749 |
|
|
|
750 |
|
|
PL_runops = RUNOPS_DEFAULT; |
751 |
|
|
ENTER; |
752 |
|
|
SAVETMPS; |
753 |
|
|
EXTEND (SP, 3); |
754 |
|
|
PUSHMARK (SP); |
755 |
|
|
PUSHs (&PL_sv_yes); |
756 |
|
|
PUSHs (fullname); |
757 |
|
|
PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
758 |
|
|
PUTBACK; |
759 |
|
|
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
760 |
|
|
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
761 |
|
|
SPAGAIN; |
762 |
|
|
FREETMPS; |
763 |
|
|
LEAVE; |
764 |
|
|
PL_runops = runops_trace; |
765 |
|
|
} |
766 |
|
|
|
767 |
|
|
oldcxix = cxstack_ix; |
768 |
|
|
} |
769 |
root |
1.167 |
|
770 |
root |
1.173 |
if (cctx->flags & CC_TRACE_LINE) |
771 |
root |
1.167 |
{ |
772 |
root |
1.173 |
dSP; |
773 |
root |
1.167 |
|
774 |
root |
1.173 |
PL_runops = RUNOPS_DEFAULT; |
775 |
|
|
ENTER; |
776 |
|
|
SAVETMPS; |
777 |
|
|
EXTEND (SP, 3); |
778 |
|
|
PL_runops = RUNOPS_DEFAULT; |
779 |
root |
1.167 |
PUSHMARK (SP); |
780 |
root |
1.173 |
PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
781 |
|
|
PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
782 |
root |
1.167 |
PUTBACK; |
783 |
root |
1.173 |
cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
784 |
root |
1.169 |
if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
785 |
root |
1.167 |
SPAGAIN; |
786 |
root |
1.173 |
FREETMPS; |
787 |
|
|
LEAVE; |
788 |
|
|
PL_runops = runops_trace; |
789 |
root |
1.167 |
} |
790 |
root |
1.169 |
} |
791 |
root |
1.167 |
} |
792 |
root |
1.165 |
} |
793 |
|
|
} |
794 |
|
|
|
795 |
|
|
TAINT_NOT; |
796 |
|
|
return 0; |
797 |
|
|
} |
798 |
|
|
|
799 |
root |
1.120 |
/* inject a fake call to Coro::State::_cctx_init into the execution */ |
800 |
root |
1.150 |
/* _cctx_init should be careful, as it could be called at almost any time */ |
801 |
|
|
/* during execution of a perl program */ |
802 |
root |
1.100 |
static void NOINLINE |
803 |
root |
1.146 |
prepare_cctx (pTHX_ coro_cctx *cctx) |
804 |
root |
1.99 |
{ |
805 |
|
|
dSP; |
806 |
root |
1.102 |
LOGOP myop; |
807 |
root |
1.99 |
|
808 |
root |
1.165 |
PL_top_env = &PL_start_env; |
809 |
|
|
|
810 |
|
|
if (cctx->flags & CC_TRACE) |
811 |
root |
1.169 |
PL_runops = runops_trace; |
812 |
root |
1.165 |
|
813 |
root |
1.102 |
Zero (&myop, 1, LOGOP); |
814 |
root |
1.99 |
myop.op_next = PL_op; |
815 |
root |
1.120 |
myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
816 |
root |
1.102 |
|
817 |
|
|
PUSHMARK (SP); |
818 |
root |
1.120 |
EXTEND (SP, 2); |
819 |
|
|
PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
820 |
|
|
PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
821 |
root |
1.99 |
PUTBACK; |
822 |
root |
1.120 |
PL_op = (OP *)&myop; |
823 |
|
|
PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
824 |
root |
1.99 |
SPAGAIN; |
825 |
|
|
} |
826 |
|
|
|
827 |
root |
1.148 |
/* |
828 |
|
|
* this is a _very_ stripped down perl interpreter ;) |
829 |
|
|
*/ |
830 |
root |
1.99 |
static void |
831 |
root |
1.89 |
coro_run (void *arg) |
832 |
root |
1.13 |
{ |
833 |
root |
1.146 |
dTHX; |
834 |
|
|
|
835 |
root |
1.120 |
/* coro_run is the alternative tail of transfer(), so unlock here. */ |
836 |
root |
1.102 |
UNLOCK; |
837 |
|
|
|
838 |
root |
1.165 |
/* we now skip the entersub that lead to transfer() */ |
839 |
|
|
PL_op = PL_op->op_next; |
840 |
root |
1.107 |
|
841 |
root |
1.148 |
/* inject a fake subroutine call to cctx_init */ |
842 |
root |
1.146 |
prepare_cctx (aTHX_ (coro_cctx *)arg); |
843 |
root |
1.89 |
|
844 |
root |
1.148 |
/* somebody or something will hit me for both perl_run and PL_restartop */ |
845 |
root |
1.120 |
PL_restartop = PL_op; |
846 |
root |
1.102 |
perl_run (PL_curinterp); |
847 |
root |
1.89 |
|
848 |
root |
1.149 |
/* |
849 |
|
|
* If perl-run returns we assume exit() was being called or the coro |
850 |
|
|
* fell off the end, which seems to be the only valid (non-bug) |
851 |
|
|
* reason for perl_run to return. We try to exit by jumping to the |
852 |
|
|
* bootstrap-time "top" top_env, as we cannot restore the "main" |
853 |
|
|
* coroutine as Coro has no such concept |
854 |
|
|
*/ |
855 |
root |
1.148 |
PL_top_env = main_top_env; |
856 |
|
|
JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
857 |
root |
1.89 |
} |
858 |
|
|
|
859 |
root |
1.106 |
static coro_cctx * |
860 |
|
|
cctx_new () |
861 |
root |
1.89 |
{ |
862 |
root |
1.106 |
coro_cctx *cctx; |
863 |
root |
1.145 |
void *stack_start; |
864 |
|
|
size_t stack_size; |
865 |
root |
1.89 |
|
866 |
root |
1.107 |
++cctx_count; |
867 |
|
|
|
868 |
root |
1.124 |
Newz (0, cctx, 1, coro_cctx); |
869 |
root |
1.89 |
|
870 |
|
|
#if HAVE_MMAP |
871 |
root |
1.13 |
|
872 |
root |
1.145 |
cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
873 |
root |
1.120 |
/* mmap supposedly does allocate-on-write for us */ |
874 |
root |
1.106 |
cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
875 |
root |
1.19 |
|
876 |
root |
1.141 |
if (cctx->sptr != (void *)-1) |
877 |
root |
1.13 |
{ |
878 |
root |
1.143 |
# if CORO_STACKGUARD |
879 |
|
|
mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
880 |
root |
1.94 |
# endif |
881 |
root |
1.145 |
stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
882 |
|
|
stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
883 |
root |
1.165 |
cctx->flags |= CC_MAPPED; |
884 |
root |
1.141 |
} |
885 |
|
|
else |
886 |
|
|
#endif |
887 |
root |
1.89 |
{ |
888 |
root |
1.145 |
cctx->ssize = coro_stacksize * (long)sizeof (long); |
889 |
|
|
New (0, cctx->sptr, coro_stacksize, long); |
890 |
root |
1.13 |
|
891 |
root |
1.141 |
if (!cctx->sptr) |
892 |
|
|
{ |
893 |
|
|
perror ("FATAL: unable to allocate stack for coroutine"); |
894 |
|
|
_exit (EXIT_FAILURE); |
895 |
|
|
} |
896 |
root |
1.89 |
|
897 |
root |
1.145 |
stack_start = cctx->sptr; |
898 |
|
|
stack_size = cctx->ssize; |
899 |
|
|
} |
900 |
root |
1.104 |
|
901 |
root |
1.145 |
REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
902 |
|
|
coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); |
903 |
root |
1.13 |
|
904 |
root |
1.106 |
return cctx; |
905 |
root |
1.13 |
} |
906 |
|
|
|
907 |
root |
1.15 |
static void |
908 |
root |
1.115 |
cctx_destroy (coro_cctx *cctx) |
909 |
root |
1.15 |
{ |
910 |
root |
1.106 |
if (!cctx) |
911 |
root |
1.89 |
return; |
912 |
|
|
|
913 |
root |
1.107 |
--cctx_count; |
914 |
|
|
|
915 |
root |
1.143 |
#if CORO_USE_VALGRIND |
916 |
root |
1.106 |
VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
917 |
root |
1.104 |
#endif |
918 |
|
|
|
919 |
root |
1.89 |
#if HAVE_MMAP |
920 |
root |
1.165 |
if (cctx->flags & CC_MAPPED) |
921 |
root |
1.141 |
munmap (cctx->sptr, cctx->ssize); |
922 |
|
|
else |
923 |
root |
1.89 |
#endif |
924 |
root |
1.141 |
Safefree (cctx->sptr); |
925 |
root |
1.89 |
|
926 |
root |
1.106 |
Safefree (cctx); |
927 |
root |
1.89 |
} |
928 |
root |
1.32 |
|
929 |
root |
1.106 |
static coro_cctx * |
930 |
root |
1.146 |
cctx_get (pTHX) |
931 |
root |
1.89 |
{ |
932 |
root |
1.145 |
while (cctx_first) |
933 |
root |
1.89 |
{ |
934 |
root |
1.145 |
coro_cctx *cctx = cctx_first; |
935 |
root |
1.106 |
cctx_first = cctx->next; |
936 |
root |
1.115 |
--cctx_idle; |
937 |
root |
1.145 |
|
938 |
root |
1.165 |
if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) |
939 |
root |
1.145 |
return cctx; |
940 |
|
|
|
941 |
|
|
cctx_destroy (cctx); |
942 |
root |
1.89 |
} |
943 |
root |
1.91 |
|
944 |
root |
1.145 |
return cctx_new (); |
945 |
root |
1.89 |
} |
946 |
root |
1.19 |
|
947 |
root |
1.89 |
static void |
948 |
root |
1.106 |
cctx_put (coro_cctx *cctx) |
949 |
root |
1.89 |
{ |
950 |
root |
1.115 |
/* free another cctx if overlimit */ |
951 |
|
|
if (cctx_idle >= MAX_IDLE_CCTX) |
952 |
|
|
{ |
953 |
|
|
coro_cctx *first = cctx_first; |
954 |
|
|
cctx_first = first->next; |
955 |
|
|
--cctx_idle; |
956 |
|
|
|
957 |
|
|
cctx_destroy (first); |
958 |
|
|
} |
959 |
|
|
|
960 |
root |
1.102 |
++cctx_idle; |
961 |
root |
1.106 |
cctx->next = cctx_first; |
962 |
|
|
cctx_first = cctx; |
963 |
root |
1.15 |
} |
964 |
|
|
|
965 |
root |
1.137 |
/** coroutine switching *****************************************************/ |
966 |
|
|
|
967 |
root |
1.170 |
static void NOINLINE |
968 |
|
|
transfer_check (pTHX_ struct coro *prev, struct coro *next) |
969 |
|
|
{ |
970 |
|
|
if (prev != next) |
971 |
|
|
{ |
972 |
|
|
if (!(prev->flags & (CF_RUNNING | CF_NEW))) |
973 |
|
|
croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); |
974 |
|
|
|
975 |
|
|
if (next->flags & CF_RUNNING) |
976 |
|
|
croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
977 |
|
|
|
978 |
|
|
if (next->flags & CF_DESTROYED) |
979 |
|
|
croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
980 |
|
|
|
981 |
|
|
if (PL_lex_state != LEX_NOTPARSING) |
982 |
|
|
croak ("Coro::State::transfer called while parsing, but this is not supported"); |
983 |
|
|
} |
984 |
|
|
} |
985 |
|
|
|
986 |
|
|
/* always use the TRANSFER macro */ |
987 |
root |
1.100 |
static void NOINLINE |
988 |
root |
1.146 |
transfer (pTHX_ struct coro *prev, struct coro *next) |
989 |
root |
1.8 |
{ |
990 |
root |
1.15 |
dSTACKLEVEL; |
991 |
root |
1.8 |
|
992 |
root |
1.89 |
/* sometimes transfer is only called to set idle_sp */ |
993 |
root |
1.122 |
if (!next) |
994 |
root |
1.124 |
{ |
995 |
|
|
((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
996 |
root |
1.132 |
assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
997 |
root |
1.124 |
} |
998 |
root |
1.92 |
else if (prev != next) |
999 |
root |
1.8 |
{ |
1000 |
root |
1.106 |
coro_cctx *prev__cctx; |
1001 |
root |
1.89 |
|
1002 |
root |
1.117 |
if (prev->flags & CF_NEW) |
1003 |
root |
1.111 |
{ |
1004 |
|
|
/* create a new empty context */ |
1005 |
|
|
Newz (0, prev->cctx, 1, coro_cctx); |
1006 |
root |
1.117 |
prev->flags &= ~CF_NEW; |
1007 |
|
|
prev->flags |= CF_RUNNING; |
1008 |
root |
1.111 |
} |
1009 |
|
|
|
1010 |
|
|
prev->flags &= ~CF_RUNNING; |
1011 |
|
|
next->flags |= CF_RUNNING; |
1012 |
|
|
|
1013 |
root |
1.92 |
LOCK; |
1014 |
root |
1.13 |
|
1015 |
root |
1.118 |
if (next->flags & CF_NEW) |
1016 |
root |
1.90 |
{ |
1017 |
|
|
/* need to start coroutine */ |
1018 |
root |
1.117 |
next->flags &= ~CF_NEW; |
1019 |
root |
1.89 |
/* first get rid of the old state */ |
1020 |
root |
1.146 |
save_perl (aTHX_ prev); |
1021 |
root |
1.89 |
/* setup coroutine call */ |
1022 |
root |
1.146 |
setup_coro (aTHX_ next); |
1023 |
root |
1.8 |
} |
1024 |
root |
1.118 |
else |
1025 |
|
|
{ |
1026 |
|
|
/* coroutine already started */ |
1027 |
root |
1.146 |
save_perl (aTHX_ prev); |
1028 |
|
|
load_perl (aTHX_ next); |
1029 |
root |
1.118 |
} |
1030 |
root |
1.15 |
|
1031 |
root |
1.106 |
prev__cctx = prev->cctx; |
1032 |
root |
1.92 |
|
1033 |
root |
1.106 |
/* possibly "free" the cctx */ |
1034 |
root |
1.168 |
if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)) |
1035 |
root |
1.92 |
{ |
1036 |
root |
1.114 |
/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
1037 |
root |
1.132 |
assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
1038 |
root |
1.112 |
|
1039 |
root |
1.117 |
prev->cctx = 0; |
1040 |
|
|
|
1041 |
root |
1.106 |
cctx_put (prev__cctx); |
1042 |
root |
1.92 |
} |
1043 |
|
|
|
1044 |
root |
1.172 |
++next->usecount; |
1045 |
|
|
|
1046 |
root |
1.106 |
if (!next->cctx) |
1047 |
root |
1.165 |
next->cctx = cctx_get (aTHX); |
1048 |
root |
1.111 |
|
1049 |
root |
1.117 |
if (prev__cctx != next->cctx) |
1050 |
|
|
{ |
1051 |
root |
1.106 |
prev__cctx->top_env = PL_top_env; |
1052 |
|
|
PL_top_env = next->cctx->top_env; |
1053 |
|
|
coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
1054 |
root |
1.92 |
} |
1055 |
|
|
|
1056 |
root |
1.146 |
free_coro_mortal (aTHX); |
1057 |
root |
1.92 |
UNLOCK; |
1058 |
root |
1.8 |
} |
1059 |
root |
1.39 |
} |
1060 |
root |
1.23 |
|
1061 |
root |
1.92 |
struct transfer_args |
1062 |
|
|
{ |
1063 |
|
|
struct coro *prev, *next; |
1064 |
|
|
}; |
1065 |
|
|
|
1066 |
root |
1.146 |
#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) |
1067 |
root |
1.170 |
#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
1068 |
root |
1.92 |
|
1069 |
root |
1.137 |
/** high level stuff ********************************************************/ |
1070 |
|
|
|
1071 |
root |
1.133 |
static int |
1072 |
root |
1.146 |
coro_state_destroy (pTHX_ struct coro *coro) |
1073 |
root |
1.87 |
{ |
1074 |
root |
1.133 |
if (coro->flags & CF_DESTROYED) |
1075 |
|
|
return 0; |
1076 |
|
|
|
1077 |
|
|
coro->flags |= CF_DESTROYED; |
1078 |
root |
1.137 |
|
1079 |
|
|
if (coro->flags & CF_READY) |
1080 |
|
|
{ |
1081 |
|
|
/* reduce nready, as destroying a ready coro effectively unreadies it */ |
1082 |
root |
1.139 |
/* alternative: look through all ready queues and remove the coro */ |
1083 |
root |
1.137 |
LOCK; |
1084 |
|
|
--coro_nready; |
1085 |
|
|
UNLOCK; |
1086 |
|
|
} |
1087 |
|
|
else |
1088 |
|
|
coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
1089 |
root |
1.87 |
|
1090 |
|
|
if (coro->mainstack && coro->mainstack != main_mainstack) |
1091 |
|
|
{ |
1092 |
root |
1.140 |
struct coro temp; |
1093 |
|
|
|
1094 |
root |
1.177 |
if (coro->flags & CF_RUNNING) |
1095 |
|
|
croak ("FATAL: tried to destroy currently running coroutine"); |
1096 |
root |
1.133 |
|
1097 |
root |
1.146 |
save_perl (aTHX_ &temp); |
1098 |
|
|
load_perl (aTHX_ coro); |
1099 |
root |
1.87 |
|
1100 |
root |
1.178 |
destroy_coro (aTHX_ coro); |
1101 |
root |
1.87 |
|
1102 |
root |
1.146 |
load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ |
1103 |
root |
1.87 |
|
1104 |
|
|
coro->mainstack = 0; |
1105 |
|
|
} |
1106 |
|
|
|
1107 |
root |
1.115 |
cctx_destroy (coro->cctx); |
1108 |
root |
1.87 |
SvREFCNT_dec (coro->args); |
1109 |
root |
1.133 |
|
1110 |
root |
1.151 |
if (coro->next) coro->next->prev = coro->prev; |
1111 |
|
|
if (coro->prev) coro->prev->next = coro->next; |
1112 |
root |
1.153 |
if (coro == coro_first) coro_first = coro->next; |
1113 |
root |
1.151 |
|
1114 |
root |
1.133 |
return 1; |
1115 |
root |
1.87 |
} |
1116 |
|
|
|
1117 |
|
|
static int |
1118 |
root |
1.134 |
coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
1119 |
root |
1.87 |
{ |
1120 |
|
|
struct coro *coro = (struct coro *)mg->mg_ptr; |
1121 |
|
|
mg->mg_ptr = 0; |
1122 |
|
|
|
1123 |
root |
1.151 |
coro->hv = 0; |
1124 |
|
|
|
1125 |
root |
1.134 |
if (--coro->refcnt < 0) |
1126 |
|
|
{ |
1127 |
root |
1.146 |
coro_state_destroy (aTHX_ coro); |
1128 |
root |
1.134 |
Safefree (coro); |
1129 |
|
|
} |
1130 |
root |
1.133 |
|
1131 |
root |
1.87 |
return 0; |
1132 |
|
|
} |
1133 |
|
|
|
1134 |
|
|
static int |
1135 |
root |
1.98 |
coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
1136 |
root |
1.87 |
{ |
1137 |
|
|
struct coro *coro = (struct coro *)mg->mg_ptr; |
1138 |
|
|
|
1139 |
|
|
++coro->refcnt; |
1140 |
|
|
|
1141 |
|
|
return 0; |
1142 |
|
|
} |
1143 |
|
|
|
1144 |
root |
1.100 |
static MGVTBL coro_state_vtbl = { |
1145 |
|
|
0, 0, 0, 0, |
1146 |
root |
1.134 |
coro_state_free, |
1147 |
root |
1.100 |
0, |
1148 |
|
|
#ifdef MGf_DUP |
1149 |
|
|
coro_state_dup, |
1150 |
root |
1.102 |
#else |
1151 |
|
|
# define MGf_DUP 0 |
1152 |
root |
1.100 |
#endif |
1153 |
|
|
}; |
1154 |
root |
1.87 |
|
1155 |
root |
1.23 |
static void |
1156 |
root |
1.146 |
prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
1157 |
root |
1.23 |
{ |
1158 |
root |
1.122 |
ta->prev = SvSTATE (prev_sv); |
1159 |
|
|
ta->next = SvSTATE (next_sv); |
1160 |
root |
1.170 |
TRANSFER_CHECK (*ta); |
1161 |
root |
1.92 |
} |
1162 |
|
|
|
1163 |
|
|
static void |
1164 |
root |
1.122 |
api_transfer (SV *prev_sv, SV *next_sv) |
1165 |
root |
1.92 |
{ |
1166 |
root |
1.146 |
dTHX; |
1167 |
root |
1.92 |
struct transfer_args ta; |
1168 |
|
|
|
1169 |
root |
1.146 |
prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
1170 |
root |
1.92 |
TRANSFER (ta); |
1171 |
root |
1.21 |
} |
1172 |
|
|
|
1173 |
root |
1.22 |
/** Coro ********************************************************************/ |
1174 |
|
|
|
1175 |
|
|
static void |
1176 |
root |
1.146 |
coro_enq (pTHX_ SV *coro_sv) |
1177 |
root |
1.22 |
{ |
1178 |
root |
1.112 |
av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
1179 |
root |
1.22 |
} |
1180 |
|
|
|
1181 |
|
|
static SV * |
1182 |
root |
1.146 |
coro_deq (pTHX_ int min_prio) |
1183 |
root |
1.22 |
{ |
1184 |
|
|
int prio = PRIO_MAX - PRIO_MIN; |
1185 |
|
|
|
1186 |
|
|
min_prio -= PRIO_MIN; |
1187 |
|
|
if (min_prio < 0) |
1188 |
|
|
min_prio = 0; |
1189 |
|
|
|
1190 |
|
|
for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
1191 |
root |
1.83 |
if (AvFILLp (coro_ready [prio]) >= 0) |
1192 |
root |
1.137 |
return av_shift (coro_ready [prio]); |
1193 |
root |
1.22 |
|
1194 |
|
|
return 0; |
1195 |
|
|
} |
1196 |
|
|
|
1197 |
root |
1.111 |
static int |
1198 |
|
|
api_ready (SV *coro_sv) |
1199 |
root |
1.23 |
{ |
1200 |
root |
1.146 |
dTHX; |
1201 |
root |
1.111 |
struct coro *coro; |
1202 |
|
|
|
1203 |
|
|
if (SvROK (coro_sv)) |
1204 |
|
|
coro_sv = SvRV (coro_sv); |
1205 |
|
|
|
1206 |
|
|
coro = SvSTATE (coro_sv); |
1207 |
root |
1.112 |
|
1208 |
root |
1.111 |
if (coro->flags & CF_READY) |
1209 |
|
|
return 0; |
1210 |
pcg |
1.56 |
|
1211 |
root |
1.111 |
coro->flags |= CF_READY; |
1212 |
root |
1.39 |
|
1213 |
pcg |
1.55 |
LOCK; |
1214 |
root |
1.146 |
coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); |
1215 |
root |
1.137 |
++coro_nready; |
1216 |
pcg |
1.55 |
UNLOCK; |
1217 |
root |
1.111 |
|
1218 |
|
|
return 1; |
1219 |
|
|
} |
1220 |
|
|
|
1221 |
|
|
static int |
1222 |
|
|
api_is_ready (SV *coro_sv) |
1223 |
|
|
{ |
1224 |
root |
1.146 |
dTHX; |
1225 |
root |
1.130 |
return !!(SvSTATE (coro_sv)->flags & CF_READY); |
1226 |
root |
1.23 |
} |
1227 |
|
|
|
1228 |
|
|
static void |
1229 |
root |
1.146 |
prepare_schedule (pTHX_ struct transfer_args *ta) |
1230 |
root |
1.23 |
{ |
1231 |
root |
1.133 |
SV *prev_sv, *next_sv; |
1232 |
root |
1.88 |
|
1233 |
|
|
for (;;) |
1234 |
|
|
{ |
1235 |
|
|
LOCK; |
1236 |
root |
1.146 |
next_sv = coro_deq (aTHX_ PRIO_MIN); |
1237 |
root |
1.88 |
|
1238 |
root |
1.133 |
/* nothing to schedule: call the idle handler */ |
1239 |
|
|
if (!next_sv) |
1240 |
|
|
{ |
1241 |
root |
1.140 |
dSP; |
1242 |
root |
1.138 |
UNLOCK; |
1243 |
root |
1.133 |
|
1244 |
|
|
ENTER; |
1245 |
|
|
SAVETMPS; |
1246 |
root |
1.23 |
|
1247 |
root |
1.133 |
PUSHMARK (SP); |
1248 |
|
|
PUTBACK; |
1249 |
|
|
call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
1250 |
|
|
|
1251 |
|
|
FREETMPS; |
1252 |
|
|
LEAVE; |
1253 |
|
|
continue; |
1254 |
|
|
} |
1255 |
root |
1.88 |
|
1256 |
root |
1.133 |
ta->next = SvSTATE (next_sv); |
1257 |
pcg |
1.55 |
|
1258 |
root |
1.133 |
/* cannot transfer to destroyed coros, skip and look for next */ |
1259 |
|
|
if (ta->next->flags & CF_DESTROYED) |
1260 |
|
|
{ |
1261 |
root |
1.138 |
UNLOCK; |
1262 |
root |
1.133 |
SvREFCNT_dec (next_sv); |
1263 |
root |
1.137 |
/* coro_nready is already taken care of by destroy */ |
1264 |
root |
1.133 |
continue; |
1265 |
|
|
} |
1266 |
root |
1.23 |
|
1267 |
root |
1.137 |
--coro_nready; |
1268 |
|
|
UNLOCK; |
1269 |
root |
1.133 |
break; |
1270 |
root |
1.88 |
} |
1271 |
|
|
|
1272 |
root |
1.133 |
/* free this only after the transfer */ |
1273 |
|
|
prev_sv = SvRV (coro_current); |
1274 |
|
|
ta->prev = SvSTATE (prev_sv); |
1275 |
root |
1.170 |
TRANSFER_CHECK (*ta); |
1276 |
root |
1.133 |
assert (ta->next->flags & CF_READY); |
1277 |
|
|
ta->next->flags &= ~CF_READY; |
1278 |
root |
1.170 |
SvRV_set (coro_current, next_sv); |
1279 |
root |
1.23 |
|
1280 |
root |
1.99 |
LOCK; |
1281 |
root |
1.146 |
free_coro_mortal (aTHX); |
1282 |
root |
1.133 |
coro_mortal = prev_sv; |
1283 |
root |
1.99 |
UNLOCK; |
1284 |
root |
1.92 |
} |
1285 |
|
|
|
1286 |
|
|
static void |
1287 |
root |
1.146 |
prepare_cede (pTHX_ struct transfer_args *ta) |
1288 |
root |
1.92 |
{ |
1289 |
root |
1.117 |
api_ready (coro_current); |
1290 |
root |
1.146 |
prepare_schedule (aTHX_ ta); |
1291 |
root |
1.131 |
} |
1292 |
pcg |
1.55 |
|
1293 |
root |
1.131 |
static int |
1294 |
root |
1.146 |
prepare_cede_notself (pTHX_ struct transfer_args *ta) |
1295 |
root |
1.131 |
{ |
1296 |
|
|
if (coro_nready) |
1297 |
|
|
{ |
1298 |
|
|
SV *prev = SvRV (coro_current); |
1299 |
root |
1.146 |
prepare_schedule (aTHX_ ta); |
1300 |
root |
1.131 |
api_ready (prev); |
1301 |
|
|
return 1; |
1302 |
|
|
} |
1303 |
|
|
else |
1304 |
|
|
return 0; |
1305 |
root |
1.39 |
} |
1306 |
|
|
|
1307 |
root |
1.92 |
static void |
1308 |
|
|
api_schedule (void) |
1309 |
|
|
{ |
1310 |
root |
1.146 |
dTHX; |
1311 |
root |
1.92 |
struct transfer_args ta; |
1312 |
|
|
|
1313 |
root |
1.146 |
prepare_schedule (aTHX_ &ta); |
1314 |
root |
1.92 |
TRANSFER (ta); |
1315 |
|
|
} |
1316 |
root |
1.89 |
|
1317 |
root |
1.131 |
static int |
1318 |
root |
1.39 |
api_cede (void) |
1319 |
|
|
{ |
1320 |
root |
1.146 |
dTHX; |
1321 |
root |
1.92 |
struct transfer_args ta; |
1322 |
root |
1.89 |
|
1323 |
root |
1.146 |
prepare_cede (aTHX_ &ta); |
1324 |
root |
1.131 |
|
1325 |
|
|
if (ta.prev != ta.next) |
1326 |
|
|
{ |
1327 |
|
|
TRANSFER (ta); |
1328 |
|
|
return 1; |
1329 |
|
|
} |
1330 |
|
|
else |
1331 |
|
|
return 0; |
1332 |
|
|
} |
1333 |
|
|
|
1334 |
|
|
static int |
1335 |
|
|
api_cede_notself (void) |
1336 |
|
|
{ |
1337 |
root |
1.146 |
dTHX; |
1338 |
root |
1.131 |
struct transfer_args ta; |
1339 |
|
|
|
1340 |
root |
1.146 |
if (prepare_cede_notself (aTHX_ &ta)) |
1341 |
root |
1.131 |
{ |
1342 |
|
|
TRANSFER (ta); |
1343 |
|
|
return 1; |
1344 |
|
|
} |
1345 |
|
|
else |
1346 |
|
|
return 0; |
1347 |
root |
1.23 |
} |
1348 |
|
|
|
1349 |
root |
1.173 |
static void |
1350 |
root |
1.174 |
api_trace (SV *coro_sv, int flags) |
1351 |
root |
1.173 |
{ |
1352 |
|
|
dTHX; |
1353 |
root |
1.174 |
struct coro *coro = SvSTATE (coro_sv); |
1354 |
root |
1.173 |
|
1355 |
|
|
if (flags & CC_TRACE) |
1356 |
|
|
{ |
1357 |
|
|
if (!coro->cctx) |
1358 |
|
|
coro->cctx = cctx_new (); |
1359 |
|
|
else if (!(coro->cctx->flags & CC_TRACE)) |
1360 |
|
|
croak ("cannot enable tracing on coroutine with custom stack"); |
1361 |
|
|
|
1362 |
|
|
coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
1363 |
|
|
} |
1364 |
|
|
else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
1365 |
|
|
{ |
1366 |
|
|
coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
1367 |
|
|
|
1368 |
|
|
if (coro->flags & CF_RUNNING) |
1369 |
|
|
PL_runops = RUNOPS_DEFAULT; |
1370 |
|
|
else |
1371 |
|
|
coro->runops = RUNOPS_DEFAULT; |
1372 |
|
|
} |
1373 |
|
|
} |
1374 |
|
|
|
1375 |
|
|
MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
1376 |
root |
1.1 |
|
1377 |
root |
1.87 |
PROTOTYPES: DISABLE |
1378 |
root |
1.1 |
|
1379 |
root |
1.3 |
BOOT: |
1380 |
root |
1.88 |
{ |
1381 |
pcg |
1.55 |
#ifdef USE_ITHREADS |
1382 |
|
|
MUTEX_INIT (&coro_mutex); |
1383 |
|
|
#endif |
1384 |
root |
1.78 |
BOOT_PAGESIZE; |
1385 |
pcg |
1.55 |
|
1386 |
root |
1.178 |
irsgv = gv_fetchpv ("/", 1, SVt_PV); |
1387 |
|
|
|
1388 |
root |
1.14 |
coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1389 |
root |
1.7 |
|
1390 |
root |
1.167 |
newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
1391 |
|
|
newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
1392 |
|
|
newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
1393 |
|
|
newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
1394 |
|
|
|
1395 |
root |
1.12 |
main_mainstack = PL_mainstack; |
1396 |
root |
1.148 |
main_top_env = PL_top_env; |
1397 |
|
|
|
1398 |
|
|
while (main_top_env->je_prev) |
1399 |
|
|
main_top_env = main_top_env->je_prev; |
1400 |
root |
1.23 |
|
1401 |
root |
1.26 |
coroapi.ver = CORO_API_VERSION; |
1402 |
|
|
coroapi.transfer = api_transfer; |
1403 |
root |
1.87 |
|
1404 |
|
|
assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1405 |
root |
1.9 |
} |
1406 |
root |
1.3 |
|
1407 |
root |
1.87 |
SV * |
1408 |
root |
1.86 |
new (char *klass, ...) |
1409 |
root |
1.1 |
CODE: |
1410 |
root |
1.86 |
{ |
1411 |
root |
1.87 |
struct coro *coro; |
1412 |
|
|
HV *hv; |
1413 |
root |
1.86 |
int i; |
1414 |
|
|
|
1415 |
pcg |
1.47 |
Newz (0, coro, 1, struct coro); |
1416 |
root |
1.178 |
coro->args = newAV (); |
1417 |
root |
1.117 |
coro->flags = CF_NEW; |
1418 |
root |
1.86 |
|
1419 |
root |
1.153 |
if (coro_first) coro_first->prev = coro; |
1420 |
|
|
coro->next = coro_first; |
1421 |
|
|
coro_first = coro; |
1422 |
root |
1.151 |
|
1423 |
|
|
coro->hv = hv = newHV (); |
1424 |
root |
1.89 |
sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1425 |
|
|
RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1426 |
|
|
|
1427 |
root |
1.86 |
for (i = 1; i < items; i++) |
1428 |
|
|
av_push (coro->args, newSVsv (ST (i))); |
1429 |
|
|
} |
1430 |
root |
1.1 |
OUTPUT: |
1431 |
|
|
RETVAL |
1432 |
|
|
|
1433 |
root |
1.176 |
# these not obviously related functions are all rolled into the same xs |
1434 |
|
|
# function to increase chances that they all will call transfer with the same |
1435 |
|
|
# stack offset |
1436 |
root |
1.1 |
void |
1437 |
root |
1.94 |
_set_stacklevel (...) |
1438 |
root |
1.92 |
ALIAS: |
1439 |
root |
1.94 |
Coro::State::transfer = 1 |
1440 |
|
|
Coro::schedule = 2 |
1441 |
|
|
Coro::cede = 3 |
1442 |
root |
1.131 |
Coro::cede_notself = 4 |
1443 |
root |
1.1 |
CODE: |
1444 |
root |
1.87 |
{ |
1445 |
root |
1.92 |
struct transfer_args ta; |
1446 |
root |
1.1 |
|
1447 |
root |
1.92 |
switch (ix) |
1448 |
root |
1.1 |
{ |
1449 |
root |
1.92 |
case 0: |
1450 |
root |
1.106 |
ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1451 |
root |
1.94 |
ta.next = 0; |
1452 |
|
|
break; |
1453 |
|
|
|
1454 |
|
|
case 1: |
1455 |
root |
1.122 |
if (items != 2) |
1456 |
|
|
croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
1457 |
root |
1.92 |
|
1458 |
root |
1.146 |
prepare_transfer (aTHX_ &ta, ST (0), ST (1)); |
1459 |
root |
1.92 |
break; |
1460 |
|
|
|
1461 |
root |
1.94 |
case 2: |
1462 |
root |
1.146 |
prepare_schedule (aTHX_ &ta); |
1463 |
root |
1.92 |
break; |
1464 |
|
|
|
1465 |
root |
1.94 |
case 3: |
1466 |
root |
1.146 |
prepare_cede (aTHX_ &ta); |
1467 |
root |
1.92 |
break; |
1468 |
root |
1.131 |
|
1469 |
|
|
case 4: |
1470 |
root |
1.146 |
if (!prepare_cede_notself (aTHX_ &ta)) |
1471 |
root |
1.131 |
XSRETURN_EMPTY; |
1472 |
|
|
|
1473 |
|
|
break; |
1474 |
root |
1.92 |
} |
1475 |
root |
1.1 |
|
1476 |
root |
1.131 |
BARRIER; |
1477 |
root |
1.92 |
TRANSFER (ta); |
1478 |
root |
1.135 |
|
1479 |
|
|
if (GIMME_V != G_VOID && ta.next != ta.prev) |
1480 |
|
|
XSRETURN_YES; |
1481 |
root |
1.87 |
} |
1482 |
root |
1.1 |
|
1483 |
root |
1.133 |
bool |
1484 |
|
|
_destroy (SV *coro_sv) |
1485 |
root |
1.87 |
CODE: |
1486 |
root |
1.146 |
RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
1487 |
root |
1.133 |
OUTPUT: |
1488 |
|
|
RETVAL |
1489 |
root |
1.12 |
|
1490 |
root |
1.7 |
void |
1491 |
root |
1.87 |
_exit (code) |
1492 |
root |
1.20 |
int code |
1493 |
|
|
PROTOTYPE: $ |
1494 |
|
|
CODE: |
1495 |
|
|
_exit (code); |
1496 |
root |
1.1 |
|
1497 |
root |
1.106 |
int |
1498 |
root |
1.145 |
cctx_stacksize (int new_stacksize = 0) |
1499 |
|
|
CODE: |
1500 |
|
|
RETVAL = coro_stacksize; |
1501 |
|
|
if (new_stacksize) |
1502 |
|
|
coro_stacksize = new_stacksize; |
1503 |
|
|
OUTPUT: |
1504 |
|
|
RETVAL |
1505 |
|
|
|
1506 |
|
|
int |
1507 |
root |
1.106 |
cctx_count () |
1508 |
|
|
CODE: |
1509 |
|
|
RETVAL = cctx_count; |
1510 |
|
|
OUTPUT: |
1511 |
|
|
RETVAL |
1512 |
|
|
|
1513 |
|
|
int |
1514 |
|
|
cctx_idle () |
1515 |
|
|
CODE: |
1516 |
|
|
RETVAL = cctx_idle; |
1517 |
|
|
OUTPUT: |
1518 |
|
|
RETVAL |
1519 |
|
|
|
1520 |
root |
1.151 |
void |
1521 |
|
|
list () |
1522 |
|
|
PPCODE: |
1523 |
|
|
{ |
1524 |
|
|
struct coro *coro; |
1525 |
root |
1.153 |
for (coro = coro_first; coro; coro = coro->next) |
1526 |
root |
1.151 |
if (coro->hv) |
1527 |
|
|
XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
1528 |
|
|
} |
1529 |
|
|
|
1530 |
|
|
void |
1531 |
root |
1.164 |
call (Coro::State coro, SV *coderef) |
1532 |
|
|
ALIAS: |
1533 |
|
|
eval = 1 |
1534 |
root |
1.151 |
CODE: |
1535 |
|
|
{ |
1536 |
|
|
if (coro->mainstack) |
1537 |
|
|
{ |
1538 |
|
|
struct coro temp; |
1539 |
|
|
Zero (&temp, 1, struct coro); |
1540 |
|
|
|
1541 |
|
|
if (!(coro->flags & CF_RUNNING)) |
1542 |
|
|
{ |
1543 |
|
|
save_perl (aTHX_ &temp); |
1544 |
|
|
load_perl (aTHX_ coro); |
1545 |
|
|
} |
1546 |
|
|
|
1547 |
|
|
{ |
1548 |
|
|
dSP; |
1549 |
|
|
ENTER; |
1550 |
|
|
SAVETMPS; |
1551 |
|
|
PUSHMARK (SP); |
1552 |
|
|
PUTBACK; |
1553 |
root |
1.164 |
if (ix) |
1554 |
|
|
eval_sv (coderef, 0); |
1555 |
|
|
else |
1556 |
|
|
call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
1557 |
root |
1.151 |
SPAGAIN; |
1558 |
|
|
FREETMPS; |
1559 |
|
|
LEAVE; |
1560 |
|
|
PUTBACK; |
1561 |
|
|
} |
1562 |
|
|
|
1563 |
|
|
if (!(coro->flags & CF_RUNNING)) |
1564 |
|
|
{ |
1565 |
|
|
save_perl (aTHX_ coro); |
1566 |
|
|
load_perl (aTHX_ &temp); |
1567 |
|
|
} |
1568 |
|
|
} |
1569 |
|
|
} |
1570 |
root |
1.172 |
|
1571 |
root |
1.151 |
SV * |
1572 |
root |
1.152 |
is_ready (Coro::State coro) |
1573 |
root |
1.151 |
PROTOTYPE: $ |
1574 |
|
|
ALIAS: |
1575 |
|
|
is_ready = CF_READY |
1576 |
|
|
is_running = CF_RUNNING |
1577 |
|
|
is_new = CF_NEW |
1578 |
|
|
is_destroyed = CF_DESTROYED |
1579 |
|
|
CODE: |
1580 |
|
|
RETVAL = boolSV (coro->flags & ix); |
1581 |
|
|
OUTPUT: |
1582 |
|
|
RETVAL |
1583 |
|
|
|
1584 |
root |
1.165 |
void |
1585 |
root |
1.174 |
api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
1586 |
root |
1.165 |
|
1587 |
root |
1.162 |
SV * |
1588 |
|
|
has_stack (Coro::State coro) |
1589 |
|
|
PROTOTYPE: $ |
1590 |
|
|
CODE: |
1591 |
|
|
RETVAL = boolSV (!!coro->cctx); |
1592 |
|
|
OUTPUT: |
1593 |
|
|
RETVAL |
1594 |
|
|
|
1595 |
root |
1.167 |
int |
1596 |
|
|
is_traced (Coro::State coro) |
1597 |
|
|
PROTOTYPE: $ |
1598 |
|
|
CODE: |
1599 |
|
|
RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
1600 |
|
|
OUTPUT: |
1601 |
|
|
RETVAL |
1602 |
|
|
|
1603 |
root |
1.152 |
IV |
1604 |
|
|
rss (Coro::State coro) |
1605 |
|
|
PROTOTYPE: $ |
1606 |
root |
1.172 |
ALIAS: |
1607 |
|
|
usecount = 1 |
1608 |
root |
1.152 |
CODE: |
1609 |
root |
1.172 |
switch (ix) |
1610 |
|
|
{ |
1611 |
|
|
case 0: RETVAL = coro_rss (aTHX_ coro); break; |
1612 |
|
|
case 1: RETVAL = coro->usecount; break; |
1613 |
|
|
} |
1614 |
root |
1.152 |
OUTPUT: |
1615 |
|
|
RETVAL |
1616 |
|
|
|
1617 |
root |
1.151 |
|
1618 |
root |
1.21 |
MODULE = Coro::State PACKAGE = Coro |
1619 |
|
|
|
1620 |
|
|
BOOT: |
1621 |
|
|
{ |
1622 |
root |
1.22 |
int i; |
1623 |
|
|
|
1624 |
root |
1.159 |
sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE); |
1625 |
|
|
sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE); |
1626 |
|
|
av_async_pool = get_av ("Coro::async_pool", TRUE); |
1627 |
|
|
|
1628 |
|
|
coro_current = get_sv ("Coro::current", FALSE); |
1629 |
|
|
SvREADONLY_on (coro_current); |
1630 |
|
|
|
1631 |
root |
1.88 |
coro_stash = gv_stashpv ("Coro", TRUE); |
1632 |
|
|
|
1633 |
|
|
newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1634 |
|
|
newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1635 |
|
|
newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1636 |
|
|
newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1637 |
|
|
newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1638 |
|
|
newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1639 |
root |
1.22 |
|
1640 |
|
|
for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1641 |
|
|
coro_ready[i] = newAV (); |
1642 |
root |
1.26 |
|
1643 |
|
|
{ |
1644 |
|
|
SV *sv = perl_get_sv("Coro::API", 1); |
1645 |
|
|
|
1646 |
root |
1.131 |
coroapi.schedule = api_schedule; |
1647 |
|
|
coroapi.cede = api_cede; |
1648 |
|
|
coroapi.cede_notself = api_cede_notself; |
1649 |
|
|
coroapi.ready = api_ready; |
1650 |
|
|
coroapi.is_ready = api_is_ready; |
1651 |
|
|
coroapi.nready = &coro_nready; |
1652 |
|
|
coroapi.current = coro_current; |
1653 |
root |
1.26 |
|
1654 |
|
|
GCoroAPI = &coroapi; |
1655 |
root |
1.81 |
sv_setiv (sv, (IV)&coroapi); |
1656 |
|
|
SvREADONLY_on (sv); |
1657 |
root |
1.26 |
} |
1658 |
root |
1.21 |
} |
1659 |
|
|
|
1660 |
root |
1.122 |
void |
1661 |
|
|
_set_current (SV *current) |
1662 |
|
|
PROTOTYPE: $ |
1663 |
|
|
CODE: |
1664 |
|
|
SvREFCNT_dec (SvRV (coro_current)); |
1665 |
|
|
SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1666 |
|
|
|
1667 |
root |
1.92 |
int |
1668 |
|
|
prio (Coro::State coro, int newprio = 0) |
1669 |
|
|
ALIAS: |
1670 |
|
|
nice = 1 |
1671 |
|
|
CODE: |
1672 |
|
|
{ |
1673 |
|
|
RETVAL = coro->prio; |
1674 |
|
|
|
1675 |
|
|
if (items > 1) |
1676 |
|
|
{ |
1677 |
|
|
if (ix) |
1678 |
root |
1.129 |
newprio = coro->prio - newprio; |
1679 |
root |
1.92 |
|
1680 |
|
|
if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1681 |
|
|
if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1682 |
|
|
|
1683 |
|
|
coro->prio = newprio; |
1684 |
|
|
} |
1685 |
|
|
} |
1686 |
root |
1.130 |
OUTPUT: |
1687 |
|
|
RETVAL |
1688 |
root |
1.92 |
|
1689 |
root |
1.111 |
SV * |
1690 |
root |
1.89 |
ready (SV *self) |
1691 |
root |
1.35 |
PROTOTYPE: $ |
1692 |
root |
1.21 |
CODE: |
1693 |
root |
1.111 |
RETVAL = boolSV (api_ready (self)); |
1694 |
|
|
OUTPUT: |
1695 |
|
|
RETVAL |
1696 |
|
|
|
1697 |
root |
1.25 |
int |
1698 |
root |
1.87 |
nready (...) |
1699 |
root |
1.25 |
PROTOTYPE: |
1700 |
|
|
CODE: |
1701 |
|
|
RETVAL = coro_nready; |
1702 |
|
|
OUTPUT: |
1703 |
|
|
RETVAL |
1704 |
|
|
|
1705 |
root |
1.159 |
# for async_pool speedup |
1706 |
root |
1.161 |
void |
1707 |
|
|
_pool_1 (SV *cb) |
1708 |
root |
1.159 |
CODE: |
1709 |
|
|
{ |
1710 |
|
|
int i, len; |
1711 |
|
|
HV *hv = (HV *)SvRV (coro_current); |
1712 |
|
|
AV *defav = GvAV (PL_defgv); |
1713 |
|
|
SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); |
1714 |
|
|
AV *invoke_av; |
1715 |
|
|
|
1716 |
|
|
if (!invoke) |
1717 |
root |
1.161 |
croak ("\3terminate\2\n"); |
1718 |
root |
1.159 |
|
1719 |
|
|
hv_store (hv, "desc", sizeof ("desc") - 1, |
1720 |
|
|
newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
1721 |
|
|
|
1722 |
|
|
invoke_av = (AV *)SvRV (invoke); |
1723 |
|
|
len = av_len (invoke_av); |
1724 |
|
|
|
1725 |
root |
1.161 |
sv_setsv (cb, AvARRAY (invoke_av)[0]); |
1726 |
root |
1.159 |
|
1727 |
|
|
if (len > 0) |
1728 |
|
|
{ |
1729 |
root |
1.161 |
av_fill (defav, len - 1); |
1730 |
root |
1.159 |
for (i = 0; i < len; ++i) |
1731 |
|
|
av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); |
1732 |
|
|
} |
1733 |
|
|
|
1734 |
|
|
SvREFCNT_dec (invoke); |
1735 |
|
|
} |
1736 |
|
|
|
1737 |
|
|
void |
1738 |
root |
1.161 |
_pool_2 (SV *cb) |
1739 |
root |
1.159 |
CODE: |
1740 |
|
|
{ |
1741 |
|
|
struct coro *coro = SvSTATE (coro_current); |
1742 |
|
|
|
1743 |
root |
1.161 |
sv_setsv (cb, &PL_sv_undef); |
1744 |
|
|
|
1745 |
root |
1.171 |
if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) |
1746 |
root |
1.159 |
|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
1747 |
root |
1.161 |
croak ("\3terminate\2\n"); |
1748 |
root |
1.159 |
|
1749 |
|
|
av_clear (GvAV (PL_defgv)); |
1750 |
root |
1.163 |
hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, |
1751 |
root |
1.159 |
newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
1752 |
root |
1.175 |
|
1753 |
root |
1.159 |
coro->prio = 0; |
1754 |
root |
1.173 |
|
1755 |
|
|
if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
1756 |
root |
1.174 |
api_trace (coro_current, 0); |
1757 |
root |
1.173 |
|
1758 |
root |
1.159 |
av_push (av_async_pool, newSVsv (coro_current)); |
1759 |
|
|
} |
1760 |
|
|
|
1761 |
|
|
|
1762 |
root |
1.89 |
MODULE = Coro::State PACKAGE = Coro::AIO |
1763 |
|
|
|
1764 |
root |
1.70 |
SV * |
1765 |
root |
1.89 |
_get_state () |
1766 |
root |
1.70 |
CODE: |
1767 |
|
|
{ |
1768 |
root |
1.121 |
struct io_state *data; |
1769 |
|
|
|
1770 |
root |
1.120 |
RETVAL = newSV (sizeof (struct io_state)); |
1771 |
root |
1.121 |
data = (struct io_state *)SvPVX (RETVAL); |
1772 |
root |
1.120 |
SvCUR_set (RETVAL, sizeof (struct io_state)); |
1773 |
|
|
SvPOK_only (RETVAL); |
1774 |
|
|
|
1775 |
|
|
data->errorno = errno; |
1776 |
|
|
data->laststype = PL_laststype; |
1777 |
|
|
data->laststatval = PL_laststatval; |
1778 |
|
|
data->statcache = PL_statcache; |
1779 |
root |
1.70 |
} |
1780 |
|
|
OUTPUT: |
1781 |
|
|
RETVAL |
1782 |
|
|
|
1783 |
|
|
void |
1784 |
root |
1.89 |
_set_state (char *data_) |
1785 |
root |
1.70 |
PROTOTYPE: $ |
1786 |
|
|
CODE: |
1787 |
|
|
{ |
1788 |
root |
1.120 |
struct io_state *data = (void *)data_; |
1789 |
root |
1.70 |
|
1790 |
root |
1.120 |
errno = data->errorno; |
1791 |
|
|
PL_laststype = data->laststype; |
1792 |
root |
1.70 |
PL_laststatval = data->laststatval; |
1793 |
root |
1.120 |
PL_statcache = data->statcache; |
1794 |
root |
1.70 |
} |
1795 |
root |
1.120 |
|