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Comparing Coro/Coro/State.xs (file contents):
Revision 1.144 by root, Sun Mar 4 11:45:23 2007 UTC vs.
Revision 1.313 by root, Thu Nov 20 03:22:59 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2
3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
2 5
3#include "EXTERN.h" 6#include "EXTERN.h"
4#include "perl.h" 7#include "perl.h"
5#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
6 10
7#include "patchlevel.h" 11#include "patchlevel.h"
8 12
9#include <stdio.h> 13#include <stdio.h>
10#include <errno.h> 14#include <errno.h>
11#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
12 25
13#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
14# include <unistd.h> 27# include <unistd.h>
15# include <sys/mman.h> 28# include <sys/mman.h>
16# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
33# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
34#endif 47#endif
35 48
36#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
37# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
38# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
39#else
40# define REGISTER_STACK(cctx,start,end)
41#endif 51#endif
42 52
43/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
44#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
45 55
46#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
47 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
48 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
49 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
50 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) 60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
51 61
52#if !PERL_VERSION_ATLEAST (5,6,0) 62#if !PERL_VERSION_ATLEAST (5,6,0)
53# ifndef PL_ppaddr 63# ifndef PL_ppaddr
54# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
55# endif 65# endif
… …
68# ifndef IS_PADCONST 78# ifndef IS_PADCONST
69# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
70# endif 80# endif
71#endif 81#endif
72 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
73/* 5.8.7 */ 104/* 5.8.7 */
74#ifndef SvRV_set 105#ifndef SvRV_set
75# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
76#endif 107#endif
77 108
… …
86/* prefer perl internal functions over our own? */ 117/* prefer perl internal functions over our own? */
87#ifndef CORO_PREFER_PERL_FUNCTIONS 118#ifndef CORO_PREFER_PERL_FUNCTIONS
88# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
89#endif 120#endif
90 121
91/* The next macro should declare a variable stacklevel that contains and approximation 122/* The next macros try to return the current stack pointer, in an as
92 * to the current C stack pointer. Its property is that it changes with each call 123 * portable way as possible. */
93 * and should be unique. */ 124#if __GNUC__ >= 4
94#define dSTACKLEVEL int stacklevel 125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
128# define dSTACKLEVEL volatile void *stacklevel
95#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
96 131
97#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
98 133
99#if __GNUC__ >= 3 134#if __GNUC__ >= 3
100# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
101# define BARRIER __asm__ __volatile__ ("" : : : "memory") 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
102#else 138#else
103# define attribute(x) 139# define attribute(x)
104# define BARRIER 140# define expect(expr,value) (expr)
141# define INLINE static
105#endif 142#endif
106 143
144#define expect_false(expr) expect ((expr) != 0, 0)
145#define expect_true(expr) expect ((expr) != 0, 1)
146
107#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
108 148
109#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
110 151
111#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
112static perl_mutex coro_mutex; 153# if CORO_PTHREAD
113# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 154static void *coro_thx;
114# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 155# endif
115#else
116# define LOCK (void)0
117# define UNLOCK (void)0
118#endif 156#endif
119 157
120/* helper storage struct for Coro::AIO */ 158static double (*nvtime)(); /* so why doesn't it take void? */
121struct io_state
122{
123 int errorno;
124 I32 laststype;
125 int laststatval;
126 Stat_t statcache;
127};
128 159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
163
164static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE;
129static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
130static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env;
131static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
132static SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171
172static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook;
175static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */
177
178/* async_pool helper stuff */
179static SV *sv_pool_rss;
180static SV *sv_pool_size;
181static SV *sv_async_pool_idle;
182static AV *av_async_pool;
183static SV *sv_Coro;
184static CV *cv_pool_handler;
185static CV *cv_coro_new;
186
187/* Coro::AnyEvent */
188static SV *sv_activity;
133 189
134static struct coro_cctx *cctx_first; 190static struct coro_cctx *cctx_first;
135static int cctx_count, cctx_idle; 191static int cctx_count, cctx_idle;
136 192
193enum {
194 CC_MAPPED = 0x01,
195 CC_NOREUSE = 0x02, /* throw this away after tracing */
196 CC_TRACE = 0x04,
197 CC_TRACE_SUB = 0x08, /* trace sub calls */
198 CC_TRACE_LINE = 0x10, /* trace each statement */
199 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
200};
201
137/* this is a structure representing a c-level coroutine */ 202/* this is a structure representing a c-level coroutine */
138typedef struct coro_cctx { 203typedef struct coro_cctx
204{
139 struct coro_cctx *next; 205 struct coro_cctx *next;
140 206
141 /* the stack */ 207 /* the stack */
142 void *sptr; 208 void *sptr;
143 ssize_t ssize; /* positive == mmap, otherwise malloc */ 209 size_t ssize;
144 210
145 /* cpu state */ 211 /* cpu state */
146 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 212 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
147 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 213 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
148 JMPENV *top_env; 214 JMPENV *top_env;
149 coro_context cctx; 215 coro_context cctx;
150 216
151 int inuse; 217 U32 gen;
152
153#if CORO_USE_VALGRIND 218#if CORO_USE_VALGRIND
154 int valgrind_id; 219 int valgrind_id;
155#endif 220#endif
221 unsigned char flags;
156} coro_cctx; 222} coro_cctx;
157 223
158enum { 224enum {
159 CF_RUNNING = 0x0001, /* coroutine is running */ 225 CF_RUNNING = 0x0001, /* coroutine is running */
160 CF_READY = 0x0002, /* coroutine is ready */ 226 CF_READY = 0x0002, /* coroutine is ready */
161 CF_NEW = 0x0004, /* has never been switched to */ 227 CF_NEW = 0x0004, /* has never been switched to */
162 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 228 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
163}; 229};
164 230
165/* this is a structure representing a perl-level coroutine */ 231/* the structure where most of the perl state is stored, overlaid on the cxstack */
166struct coro { 232typedef struct
167 /* the c coroutine allocated to this perl coroutine, if any */ 233{
168 coro_cctx *cctx; 234 SV *defsv;
169 235 AV *defav;
170 /* data associated with this coroutine (initial args) */ 236 SV *errsv;
171 AV *args; 237 SV *irsgv;
172 int refcnt;
173 int save; /* CORO_SAVE flags */
174 int flags; /* CF_ flags */
175
176 /* optionally saved, might be zero */
177 AV *defav; /* @_ */
178 SV *defsv; /* $_ */
179 SV *errsv; /* $@ */
180 SV *irssv; /* $/ */
181 SV *irssv_sv; /* real $/ cache */
182
183#define VAR(name,type) type name; 238#define VAR(name,type) type name;
184# include "state.h" 239# include "state.h"
185#undef VAR 240#undef VAR
241} perl_slots;
242
243#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
244
245/* this is a structure representing a perl-level coroutine */
246struct coro {
247 /* the C coroutine allocated to this perl coroutine, if any */
248 coro_cctx *cctx;
249
250 /* state data */
251 struct CoroSLF slf_frame; /* saved slf frame */
252 AV *mainstack;
253 perl_slots *slot; /* basically the saved sp */
254
255 CV *startcv; /* the CV to execute */
256 AV *args; /* data associated with this coroutine (initial args) */
257 int refcnt; /* coroutines are refcounted, yes */
258 int flags; /* CF_ flags */
259 HV *hv; /* the perl hash associated with this coro, if any */
260 void (*on_destroy)(pTHX_ struct coro *coro);
261
262 /* statistics */
263 int usecount; /* number of transfers to this coro */
186 264
187 /* coro process data */ 265 /* coro process data */
188 int prio; 266 int prio;
267 SV *except; /* exception to be thrown */
268 SV *rouse_cb;
269
270 /* async_pool */
271 SV *saved_deffh;
272 SV *invoke_cb;
273 AV *invoke_av;
274
275 /* linked list */
276 struct coro *next, *prev;
189}; 277};
190 278
191typedef struct coro *Coro__State; 279typedef struct coro *Coro__State;
192typedef struct coro *Coro__State_or_hashref; 280typedef struct coro *Coro__State_or_hashref;
281
282/* the following variables are effectively part of the perl context */
283/* and get copied between struct coro and these variables */
284/* the mainr easonw e don't support windows process emulation */
285static struct CoroSLF slf_frame; /* the current slf frame */
193 286
194/** Coro ********************************************************************/ 287/** Coro ********************************************************************/
195 288
196#define PRIO_MAX 3 289#define PRIO_MAX 3
197#define PRIO_HIGH 1 290#define PRIO_HIGH 1
… …
200#define PRIO_IDLE -3 293#define PRIO_IDLE -3
201#define PRIO_MIN -4 294#define PRIO_MIN -4
202 295
203/* for Coro.pm */ 296/* for Coro.pm */
204static SV *coro_current; 297static SV *coro_current;
298static SV *coro_readyhook;
205static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 299static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
206static int coro_nready; 300static CV *cv_coro_run, *cv_coro_terminate;
301static struct coro *coro_first;
302#define coro_nready coroapi.nready
207 303
208/** lowlevel stuff **********************************************************/ 304/** lowlevel stuff **********************************************************/
209 305
306static SV *
307coro_get_sv (pTHX_ const char *name, int create)
308{
309#if PERL_VERSION_ATLEAST (5,10,0)
310 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
311 get_sv (name, create);
312#endif
313 return get_sv (name, create);
314}
315
210static AV * 316static AV *
317coro_get_av (pTHX_ const char *name, int create)
318{
319#if PERL_VERSION_ATLEAST (5,10,0)
320 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
321 get_av (name, create);
322#endif
323 return get_av (name, create);
324}
325
326static HV *
327coro_get_hv (pTHX_ const char *name, int create)
328{
329#if PERL_VERSION_ATLEAST (5,10,0)
330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
331 get_hv (name, create);
332#endif
333 return get_hv (name, create);
334}
335
336/* may croak */
337INLINE CV *
338coro_sv_2cv (pTHX_ SV *sv)
339{
340 HV *st;
341 GV *gvp;
342 return sv_2cv (sv, &st, &gvp, 0);
343}
344
345static AV *
211coro_clone_padlist (CV *cv) 346coro_clone_padlist (pTHX_ CV *cv)
212{ 347{
213 AV *padlist = CvPADLIST (cv); 348 AV *padlist = CvPADLIST (cv);
214 AV *newpadlist, *newpad; 349 AV *newpadlist, *newpad;
215 350
216 newpadlist = newAV (); 351 newpadlist = newAV ();
217 AvREAL_off (newpadlist); 352 AvREAL_off (newpadlist);
218#if PERL_VERSION_ATLEAST (5,9,0) 353#if PERL_VERSION_ATLEAST (5,10,0)
219 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 354 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
220#else 355#else
221 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 356 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
222#endif 357#endif
223 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 358 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
224 --AvFILLp (padlist); 359 --AvFILLp (padlist);
225 360
226 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 361 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
227 av_store (newpadlist, 1, (SV *)newpad); 362 av_store (newpadlist, 1, (SV *)newpad);
228 363
229 return newpadlist; 364 return newpadlist;
230} 365}
231 366
232static void 367static void
233free_padlist (AV *padlist) 368free_padlist (pTHX_ AV *padlist)
234{ 369{
235 /* may be during global destruction */ 370 /* may be during global destruction */
236 if (SvREFCNT (padlist)) 371 if (SvREFCNT (padlist))
237 { 372 {
238 I32 i = AvFILLp (padlist); 373 I32 i = AvFILLp (padlist);
… …
259 AV *padlist; 394 AV *padlist;
260 AV *av = (AV *)mg->mg_obj; 395 AV *av = (AV *)mg->mg_obj;
261 396
262 /* casting is fun. */ 397 /* casting is fun. */
263 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 398 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
264 free_padlist (padlist); 399 free_padlist (aTHX_ padlist);
265 400
266 SvREFCNT_dec (av); 401 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
267 402
268 return 0; 403 return 0;
269} 404}
270 405
406#define CORO_MAGIC_type_cv 26
271#define PERL_MAGIC_coro PERL_MAGIC_ext 407#define CORO_MAGIC_type_state PERL_MAGIC_ext
272 408
273static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 409static MGVTBL coro_cv_vtbl = {
410 0, 0, 0, 0,
411 coro_cv_free
412};
274 413
275#define CORO_MAGIC(cv) \ 414#define CORO_MAGIC_NN(sv, type) \
415 (expect_true (SvMAGIC (sv)->mg_type == type) \
276 SvMAGIC (cv) \ 416 ? SvMAGIC (sv) \
277 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 417 : mg_find (sv, type))
278 ? SvMAGIC (cv) \ 418
279 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 419#define CORO_MAGIC(sv, type) \
420 (expect_true (SvMAGIC (sv)) \
421 ? CORO_MAGIC_NN (sv, type) \
280 : 0 422 : 0)
423
424#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
425#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
426
427INLINE struct coro *
428SvSTATE_ (pTHX_ SV *coro)
429{
430 HV *stash;
431 MAGIC *mg;
432
433 if (SvROK (coro))
434 coro = SvRV (coro);
435
436 if (expect_false (SvTYPE (coro) != SVt_PVHV))
437 croak ("Coro::State object required");
438
439 stash = SvSTASH (coro);
440 if (expect_false (stash != coro_stash && stash != coro_state_stash))
441 {
442 /* very slow, but rare, check */
443 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
444 croak ("Coro::State object required");
445 }
446
447 mg = CORO_MAGIC_state (coro);
448 return (struct coro *)mg->mg_ptr;
449}
450
451#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
452
453/* faster than SvSTATE, but expects a coroutine hv */
454#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
455#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
281 456
282/* the next two functions merely cache the padlists */ 457/* the next two functions merely cache the padlists */
283static void 458static void
284get_padlist (CV *cv) 459get_padlist (pTHX_ CV *cv)
285{ 460{
286 MAGIC *mg = CORO_MAGIC (cv); 461 MAGIC *mg = CORO_MAGIC_cv (cv);
287 AV *av; 462 AV *av;
288 463
289 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 464 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
290 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 465 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
291 else 466 else
292 { 467 {
293#if CORO_PREFER_PERL_FUNCTIONS 468#if CORO_PREFER_PERL_FUNCTIONS
294 /* this is probably cleaner, but also slower? */ 469 /* this is probably cleaner? but also slower! */
470 /* in practise, it seems to be less stable */
295 CV *cp = Perl_cv_clone (cv); 471 CV *cp = Perl_cv_clone (aTHX_ cv);
296 CvPADLIST (cv) = CvPADLIST (cp); 472 CvPADLIST (cv) = CvPADLIST (cp);
297 CvPADLIST (cp) = 0; 473 CvPADLIST (cp) = 0;
298 SvREFCNT_dec (cp); 474 SvREFCNT_dec (cp);
299#else 475#else
300 CvPADLIST (cv) = coro_clone_padlist (cv); 476 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
301#endif 477#endif
302 } 478 }
303} 479}
304 480
305static void 481static void
306put_padlist (CV *cv) 482put_padlist (pTHX_ CV *cv)
307{ 483{
308 MAGIC *mg = CORO_MAGIC (cv); 484 MAGIC *mg = CORO_MAGIC_cv (cv);
309 AV *av; 485 AV *av;
310 486
311 if (!mg) 487 if (expect_false (!mg))
312 { 488 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
313 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
314 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
315 mg->mg_virtual = &vtbl_coro;
316 mg->mg_obj = (SV *)newAV ();
317 }
318 489
319 av = (AV *)mg->mg_obj; 490 av = (AV *)mg->mg_obj;
320 491
321 if (AvFILLp (av) >= AvMAX (av)) 492 if (expect_false (AvFILLp (av) >= AvMAX (av)))
322 av_extend (av, AvMAX (av) + 1); 493 av_extend (av, AvMAX (av) + 1);
323 494
324 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 495 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
325} 496}
326 497
327/** load & save, init *******************************************************/ 498/** load & save, init *******************************************************/
328 499
329#define SB do {
330#define SE } while (0)
331
332#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
333
334static void 500static void
335load_perl (Coro__State c) 501load_perl (pTHX_ Coro__State c)
336{ 502{
503 perl_slots *slot = c->slot;
504 c->slot = 0;
505
506 PL_mainstack = c->mainstack;
507
508 GvSV (PL_defgv) = slot->defsv;
509 GvAV (PL_defgv) = slot->defav;
510 GvSV (PL_errgv) = slot->errsv;
511 GvSV (irsgv) = slot->irsgv;
512
337#define VAR(name,type) PL_ ## name = c->name; 513 #define VAR(name,type) PL_ ## name = slot->name;
338# include "state.h" 514 # include "state.h"
339#undef VAR 515 #undef VAR
340
341 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
342 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
343 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
344 if (c->irssv)
345 {
346 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
347 SvREFCNT_dec (c->irssv);
348 else
349 {
350 REPLACE_SV (PL_rs, c->irssv);
351 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
352 sv_setsv (c->irssv_sv, PL_rs);
353 }
354 }
355 516
356 { 517 {
357 dSP; 518 dSP;
519
358 CV *cv; 520 CV *cv;
359 521
360 /* now do the ugly restore mess */ 522 /* now do the ugly restore mess */
361 while ((cv = (CV *)POPs)) 523 while (expect_true (cv = (CV *)POPs))
362 { 524 {
363 put_padlist (cv); /* mark this padlist as available */ 525 put_padlist (aTHX_ cv); /* mark this padlist as available */
364 CvDEPTH (cv) = PTR2IV (POPs); 526 CvDEPTH (cv) = PTR2IV (POPs);
365 CvPADLIST (cv) = (AV *)POPs; 527 CvPADLIST (cv) = (AV *)POPs;
366 } 528 }
367 529
368 PUTBACK; 530 PUTBACK;
369 } 531 }
370 assert (!PL_comppad || AvARRAY (PL_comppad));//D
371}
372 532
533 slf_frame = c->slf_frame;
534 CORO_THROW = c->except;
535}
536
373static void 537static void
374save_perl (Coro__State c) 538save_perl (pTHX_ Coro__State c)
375{ 539{
376 assert (!PL_comppad || AvARRAY (PL_comppad));//D 540 c->except = CORO_THROW;
541 c->slf_frame = slf_frame;
542
377 { 543 {
378 dSP; 544 dSP;
379 I32 cxix = cxstack_ix; 545 I32 cxix = cxstack_ix;
380 PERL_CONTEXT *ccstk = cxstack; 546 PERL_CONTEXT *ccstk = cxstack;
381 PERL_SI *top_si = PL_curstackinfo; 547 PERL_SI *top_si = PL_curstackinfo;
… …
383 /* 549 /*
384 * the worst thing you can imagine happens first - we have to save 550 * the worst thing you can imagine happens first - we have to save
385 * (and reinitialize) all cv's in the whole callchain :( 551 * (and reinitialize) all cv's in the whole callchain :(
386 */ 552 */
387 553
388 EXTEND (SP, 3 + 1);
389 PUSHs (Nullsv); 554 XPUSHs (Nullsv);
390 /* this loop was inspired by pp_caller */ 555 /* this loop was inspired by pp_caller */
391 for (;;) 556 for (;;)
392 { 557 {
393 while (cxix >= 0) 558 while (expect_true (cxix >= 0))
394 { 559 {
395 PERL_CONTEXT *cx = &ccstk[cxix--]; 560 PERL_CONTEXT *cx = &ccstk[cxix--];
396 561
397 if (CxTYPE (cx) == CXt_SUB) 562 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
398 { 563 {
399 CV *cv = cx->blk_sub.cv; 564 CV *cv = cx->blk_sub.cv;
400 565
401 if (CvDEPTH (cv)) 566 if (expect_true (CvDEPTH (cv)))
402 { 567 {
403 EXTEND (SP, 3); 568 EXTEND (SP, 3);
404 PUSHs ((SV *)CvPADLIST (cv)); 569 PUSHs ((SV *)CvPADLIST (cv));
405 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 570 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
406 PUSHs ((SV *)cv); 571 PUSHs ((SV *)cv);
407 572
408 CvDEPTH (cv) = 0; 573 CvDEPTH (cv) = 0;
409 get_padlist (cv); 574 get_padlist (aTHX_ cv);
410 } 575 }
411 } 576 }
412 } 577 }
413 578
414 if (top_si->si_type == PERLSI_MAIN) 579 if (expect_true (top_si->si_type == PERLSI_MAIN))
415 break; 580 break;
416 581
417 top_si = top_si->si_prev; 582 top_si = top_si->si_prev;
418 ccstk = top_si->si_cxstack; 583 ccstk = top_si->si_cxstack;
419 cxix = top_si->si_cxix; 584 cxix = top_si->si_cxix;
420 } 585 }
421 586
422 PUTBACK; 587 PUTBACK;
423 } 588 }
424 589
425 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 590 /* allocate some space on the context stack for our purposes */
426 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 591 /* we manually unroll here, as usually 2 slots is enough */
427 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 592 if (SLOT_COUNT >= 1) CXINC;
428 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 593 if (SLOT_COUNT >= 2) CXINC;
594 if (SLOT_COUNT >= 3) CXINC;
595 {
596 int i;
597 for (i = 3; i < SLOT_COUNT; ++i)
598 CXINC;
599 }
600 cxstack_ix -= SLOT_COUNT; /* undo allocation */
429 601
602 c->mainstack = PL_mainstack;
603
604 {
605 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
606
607 slot->defav = GvAV (PL_defgv);
608 slot->defsv = DEFSV;
609 slot->errsv = ERRSV;
610 slot->irsgv = GvSV (irsgv);
611
430#define VAR(name,type)c->name = PL_ ## name; 612 #define VAR(name,type) slot->name = PL_ ## name;
431# include "state.h" 613 # include "state.h"
432#undef VAR 614 #undef VAR
615 }
433} 616}
434 617
435/* 618/*
436 * allocate various perl stacks. This is an exact copy 619 * allocate various perl stacks. This is almost an exact copy
437 * of perl.c:init_stacks, except that it uses less memory 620 * of perl.c:init_stacks, except that it uses less memory
438 * on the (sometimes correct) assumption that coroutines do 621 * on the (sometimes correct) assumption that coroutines do
439 * not usually need a lot of stackspace. 622 * not usually need a lot of stackspace.
440 */ 623 */
441#if CORO_PREFER_PERL_FUNCTIONS 624#if CORO_PREFER_PERL_FUNCTIONS
442# define coro_init_stacks init_stacks 625# define coro_init_stacks(thx) init_stacks ()
443#else 626#else
444static void 627static void
445coro_init_stacks () 628coro_init_stacks (pTHX)
446{ 629{
447 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 630 PL_curstackinfo = new_stackinfo(32, 8);
448 PL_curstackinfo->si_type = PERLSI_MAIN; 631 PL_curstackinfo->si_type = PERLSI_MAIN;
449 PL_curstack = PL_curstackinfo->si_stack; 632 PL_curstack = PL_curstackinfo->si_stack;
450 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 633 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451 634
452 PL_stack_base = AvARRAY(PL_curstack); 635 PL_stack_base = AvARRAY(PL_curstack);
453 PL_stack_sp = PL_stack_base; 636 PL_stack_sp = PL_stack_base;
454 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 637 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
455 638
456 New(50,PL_tmps_stack,128,SV*); 639 New(50,PL_tmps_stack,32,SV*);
457 PL_tmps_floor = -1; 640 PL_tmps_floor = -1;
458 PL_tmps_ix = -1; 641 PL_tmps_ix = -1;
459 PL_tmps_max = 128; 642 PL_tmps_max = 32;
460 643
461 New(54,PL_markstack,32,I32); 644 New(54,PL_markstack,16,I32);
462 PL_markstack_ptr = PL_markstack; 645 PL_markstack_ptr = PL_markstack;
463 PL_markstack_max = PL_markstack + 32; 646 PL_markstack_max = PL_markstack + 16;
464 647
465#ifdef SET_MARK_OFFSET 648#ifdef SET_MARK_OFFSET
466 SET_MARK_OFFSET; 649 SET_MARK_OFFSET;
467#endif 650#endif
468 651
469 New(54,PL_scopestack,32,I32); 652 New(54,PL_scopestack,8,I32);
470 PL_scopestack_ix = 0; 653 PL_scopestack_ix = 0;
471 PL_scopestack_max = 32; 654 PL_scopestack_max = 8;
472 655
473 New(54,PL_savestack,64,ANY); 656 New(54,PL_savestack,24,ANY);
474 PL_savestack_ix = 0; 657 PL_savestack_ix = 0;
475 PL_savestack_max = 64; 658 PL_savestack_max = 24;
476 659
477#if !PERL_VERSION_ATLEAST (5,9,0) 660#if !PERL_VERSION_ATLEAST (5,10,0)
478 New(54,PL_retstack,16,OP*); 661 New(54,PL_retstack,4,OP*);
479 PL_retstack_ix = 0; 662 PL_retstack_ix = 0;
480 PL_retstack_max = 16; 663 PL_retstack_max = 4;
481#endif 664#endif
482} 665}
483#endif 666#endif
484 667
485/* 668/*
486 * destroy the stacks, the callchain etc... 669 * destroy the stacks, the callchain etc...
487 */ 670 */
488static void 671static void
489coro_destroy_stacks () 672coro_destruct_stacks (pTHX)
490{ 673{
491 if (!IN_DESTRUCT)
492 {
493 /* restore all saved variables and stuff */
494 LEAVE_SCOPE (0);
495 assert (PL_tmps_floor == -1);
496
497 /* free all temporaries */
498 FREETMPS;
499 assert (PL_tmps_ix == -1);
500
501 /* unwind all extra stacks */
502 POPSTACK_TO (PL_mainstack);
503
504 /* unwind main stack */
505 dounwind (-1);
506 }
507
508 while (PL_curstackinfo->si_next) 674 while (PL_curstackinfo->si_next)
509 PL_curstackinfo = PL_curstackinfo->si_next; 675 PL_curstackinfo = PL_curstackinfo->si_next;
510 676
511 while (PL_curstackinfo) 677 while (PL_curstackinfo)
512 { 678 {
… …
522 688
523 Safefree (PL_tmps_stack); 689 Safefree (PL_tmps_stack);
524 Safefree (PL_markstack); 690 Safefree (PL_markstack);
525 Safefree (PL_scopestack); 691 Safefree (PL_scopestack);
526 Safefree (PL_savestack); 692 Safefree (PL_savestack);
527#if !PERL_VERSION_ATLEAST (5,9,0) 693#if !PERL_VERSION_ATLEAST (5,10,0)
528 Safefree (PL_retstack); 694 Safefree (PL_retstack);
529#endif 695#endif
530} 696}
531 697
698#define CORO_RSS \
699 rss += sizeof (SYM (curstackinfo)); \
700 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
702 rss += SYM (tmps_max) * sizeof (SV *); \
703 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
704 rss += SYM (scopestack_max) * sizeof (I32); \
705 rss += SYM (savestack_max) * sizeof (ANY);
706
707static size_t
708coro_rss (pTHX_ struct coro *coro)
709{
710 size_t rss = sizeof (*coro);
711
712 if (coro->mainstack)
713 {
714 if (coro->flags & CF_RUNNING)
715 {
716 #define SYM(sym) PL_ ## sym
717 CORO_RSS;
718 #undef SYM
719 }
720 else
721 {
722 #define SYM(sym) coro->slot->sym
723 CORO_RSS;
724 #undef SYM
725 }
726 }
727
728 return rss;
729}
730
532/** coroutine stack handling ************************************************/ 731/** coroutine stack handling ************************************************/
533 732
733static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
734static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
735static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
736
737/* apparently < 5.8.8 */
738#ifndef MgPV_nolen_const
739#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
740 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
741 (const char*)(mg)->mg_ptr)
742#endif
743
744/*
745 * This overrides the default magic get method of %SIG elements.
746 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
747 * and instead of tryign to save and restore the hash elements, we just provide
748 * readback here.
749 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
750 * not expecting this to actually change the hook. This is a potential problem
751 * when a schedule happens then, but we ignore this.
752 */
534static void 753static int
535setup_coro (struct coro *coro) 754coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
755{
756 const char *s = MgPV_nolen_const (mg);
757
758 if (*s == '_')
759 {
760 SV **svp = 0;
761
762 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
763 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
764
765 if (svp)
766 {
767 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
768 return 0;
769 }
770 }
771
772 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
773}
774
775static int
776coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
777{
778 const char *s = MgPV_nolen_const (mg);
779
780 if (*s == '_')
781 {
782 SV **svp = 0;
783
784 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
785 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
786
787 if (svp)
788 {
789 SV *old = *svp;
790 *svp = 0;
791 SvREFCNT_dec (old);
792 return 0;
793 }
794 }
795
796 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
797}
798
799static int
800coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
801{
802 const char *s = MgPV_nolen_const (mg);
803
804 if (*s == '_')
805 {
806 SV **svp = 0;
807
808 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
809 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
810
811 if (svp)
812 {
813 SV *old = *svp;
814 *svp = newSVsv (sv);
815 SvREFCNT_dec (old);
816 return 0;
817 }
818 }
819
820 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
821}
822
823static void
824prepare_nop (pTHX_ struct coro_transfer_args *ta)
825{
826 /* kind of mega-hacky, but works */
827 ta->next = ta->prev = (struct coro *)ta;
828}
829
830static int
831slf_check_nop (pTHX_ struct CoroSLF *frame)
832{
833 return 0;
834}
835
836static UNOP coro_setup_op;
837
838static void NOINLINE /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro)
536{ 840{
537 /* 841 /*
538 * emulate part of the perl startup here. 842 * emulate part of the perl startup here.
539 */ 843 */
540
541 coro_init_stacks (); 844 coro_init_stacks (aTHX);
542 845
846 PL_runops = RUNOPS_DEFAULT;
543 PL_curcop = &PL_compiling; 847 PL_curcop = &PL_compiling;
544 PL_in_eval = EVAL_NULL; 848 PL_in_eval = EVAL_NULL;
545 PL_comppad = 0; 849 PL_comppad = 0;
546 PL_curpm = 0; 850 PL_curpm = 0;
851 PL_curpad = 0;
547 PL_localizing = 0; 852 PL_localizing = 0;
548 PL_dirty = 0; 853 PL_dirty = 0;
549 PL_restartop = 0; 854 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0;
857#endif
858
859 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
862
863 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
867 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
550 869
551 { 870 {
552 dSP; 871 dSP;
553 LOGOP myop; 872 UNOP myop;
554 873
555 SvREFCNT_dec (GvAV (PL_defgv));
556 GvAV (PL_defgv) = coro->args; coro->args = 0;
557
558 Zero (&myop, 1, LOGOP); 874 Zero (&myop, 1, UNOP);
559 myop.op_next = Nullop; 875 myop.op_next = Nullop;
876 myop.op_type = OP_ENTERSUB;
560 myop.op_flags = OPf_WANT_VOID; 877 myop.op_flags = OPf_WANT_VOID;
561 878
562 PUSHMARK (SP); 879 PUSHMARK (SP);
563 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 880 PUSHs ((SV *)coro->startcv);
564 PUTBACK; 881 PUTBACK;
565 PL_op = (OP *)&myop; 882 PL_op = (OP *)&myop;
566 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 883 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567 SPAGAIN;
568 } 884 }
569 885
570 ENTER; /* necessary e.g. for dounwind */ 886 /* this newly created coroutine might be run on an existing cctx which most
571} 887 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 */
889 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
890 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
572 891
892 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
893 coro_setup_op.op_next = PL_op;
894 coro_setup_op.op_type = OP_CUSTOM;
895 coro_setup_op.op_ppaddr = pp_slf;
896 /* no flags etc. required, as an init function won't be called */
897
898 PL_op = (OP *)&coro_setup_op;
899
900 /* copy throw, in case it was set before coro_setup */
901 CORO_THROW = coro->except;
902}
903
573static void 904static void
905coro_destruct (pTHX_ struct coro *coro)
906{
907 if (!IN_DESTRUCT)
908 {
909 /* restore all saved variables and stuff */
910 LEAVE_SCOPE (0);
911 assert (PL_tmps_floor == -1);
912
913 /* free all temporaries */
914 FREETMPS;
915 assert (PL_tmps_ix == -1);
916
917 /* unwind all extra stacks */
918 POPSTACK_TO (PL_mainstack);
919
920 /* unwind main stack */
921 dounwind (-1);
922 }
923
924 SvREFCNT_dec (GvSV (PL_defgv));
925 SvREFCNT_dec (GvAV (PL_defgv));
926 SvREFCNT_dec (GvSV (PL_errgv));
927 SvREFCNT_dec (PL_defoutgv);
928 SvREFCNT_dec (PL_rs);
929 SvREFCNT_dec (GvSV (irsgv));
930
931 SvREFCNT_dec (PL_diehook);
932 SvREFCNT_dec (PL_warnhook);
933
934 SvREFCNT_dec (coro->saved_deffh);
935 SvREFCNT_dec (coro->rouse_cb);
936 SvREFCNT_dec (coro->invoke_cb);
937 SvREFCNT_dec (coro->invoke_av);
938
939 coro_destruct_stacks (aTHX);
940}
941
942INLINE void
574free_coro_mortal () 943free_coro_mortal (pTHX)
575{ 944{
576 if (coro_mortal) 945 if (expect_true (coro_mortal))
577 { 946 {
578 SvREFCNT_dec (coro_mortal); 947 SvREFCNT_dec (coro_mortal);
579 coro_mortal = 0; 948 coro_mortal = 0;
580 } 949 }
581} 950}
582 951
583/* inject a fake call to Coro::State::_cctx_init into the execution */ 952static int
953runops_trace (pTHX)
954{
955 COP *oldcop = 0;
956 int oldcxix = -2;
957 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
958 coro_cctx *cctx = coro->cctx;
959
960 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
961 {
962 PERL_ASYNC_CHECK ();
963
964 if (cctx->flags & CC_TRACE_ALL)
965 {
966 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
967 {
968 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
969 SV **bot, **top;
970 AV *av = newAV (); /* return values */
971 SV **cb;
972 dSP;
973
974 GV *gv = CvGV (cx->blk_sub.cv);
975 SV *fullname = sv_2mortal (newSV (0));
976 if (isGV (gv))
977 gv_efullname3 (fullname, gv, 0);
978
979 bot = PL_stack_base + cx->blk_oldsp + 1;
980 top = cx->blk_gimme == G_ARRAY ? SP + 1
981 : cx->blk_gimme == G_SCALAR ? bot + 1
982 : bot;
983
984 av_extend (av, top - bot);
985 while (bot < top)
986 av_push (av, SvREFCNT_inc_NN (*bot++));
987
988 PL_runops = RUNOPS_DEFAULT;
989 ENTER;
990 SAVETMPS;
991 EXTEND (SP, 3);
992 PUSHMARK (SP);
993 PUSHs (&PL_sv_no);
994 PUSHs (fullname);
995 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
996 PUTBACK;
997 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
998 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
999 SPAGAIN;
1000 FREETMPS;
1001 LEAVE;
1002 PL_runops = runops_trace;
1003 }
1004
1005 if (oldcop != PL_curcop)
1006 {
1007 oldcop = PL_curcop;
1008
1009 if (PL_curcop != &PL_compiling)
1010 {
1011 SV **cb;
1012
1013 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
1014 {
1015 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1016
1017 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1018 {
1019 runops_proc_t old_runops = PL_runops;
1020 dSP;
1021 GV *gv = CvGV (cx->blk_sub.cv);
1022 SV *fullname = sv_2mortal (newSV (0));
1023
1024 if (isGV (gv))
1025 gv_efullname3 (fullname, gv, 0);
1026
1027 PL_runops = RUNOPS_DEFAULT;
1028 ENTER;
1029 SAVETMPS;
1030 EXTEND (SP, 3);
1031 PUSHMARK (SP);
1032 PUSHs (&PL_sv_yes);
1033 PUSHs (fullname);
1034 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1035 PUTBACK;
1036 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1037 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1038 SPAGAIN;
1039 FREETMPS;
1040 LEAVE;
1041 PL_runops = runops_trace;
1042 }
1043
1044 oldcxix = cxstack_ix;
1045 }
1046
1047 if (cctx->flags & CC_TRACE_LINE)
1048 {
1049 dSP;
1050
1051 PL_runops = RUNOPS_DEFAULT;
1052 ENTER;
1053 SAVETMPS;
1054 EXTEND (SP, 3);
1055 PL_runops = RUNOPS_DEFAULT;
1056 PUSHMARK (SP);
1057 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1058 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1059 PUTBACK;
1060 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1061 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1062 SPAGAIN;
1063 FREETMPS;
1064 LEAVE;
1065 PL_runops = runops_trace;
1066 }
1067 }
1068 }
1069 }
1070 }
1071
1072 TAINT_NOT;
1073 return 0;
1074}
1075
1076static struct coro_cctx *cctx_ssl_cctx;
1077static struct CoroSLF cctx_ssl_frame;
1078
1079static void
1080slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1081{
1082 ta->prev = (struct coro *)cctx_ssl_cctx;
1083 ta->next = 0;
1084}
1085
1086static int
1087slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1088{
1089 *frame = cctx_ssl_frame;
1090
1091 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1092}
1093
1094/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
584static void NOINLINE 1095static void NOINLINE
585prepare_cctx (coro_cctx *cctx) 1096cctx_prepare (pTHX_ coro_cctx *cctx)
586{ 1097{
587 dSP;
588 LOGOP myop;
589
590 Zero (&myop, 1, LOGOP);
591 myop.op_next = PL_op;
592 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
593
594 PUSHMARK (SP);
595 EXTEND (SP, 2);
596 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
597 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
598 PUTBACK;
599 PL_op = (OP *)&myop;
600 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
601 SPAGAIN;
602}
603
604static void
605coro_run (void *arg)
606{
607 /* coro_run is the alternative tail of transfer(), so unlock here. */
608 UNLOCK;
609
610 /*
611 * this is a _very_ stripped down perl interpreter ;)
612 */
613 PL_top_env = &PL_start_env; 1098 PL_top_env = &PL_start_env;
614 1099
1100 if (cctx->flags & CC_TRACE)
1101 PL_runops = runops_trace;
1102
1103 /* we already must be executing an SLF op, there is no other valid way
1104 * that can lead to creation of a new cctx */
1105 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1106 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1107
1108 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1109 cctx_ssl_cctx = cctx;
1110 cctx_ssl_frame = slf_frame;
1111
1112 slf_frame.prepare = slf_prepare_set_stacklevel;
1113 slf_frame.check = slf_check_set_stacklevel;
1114}
1115
1116/* the tail of transfer: execute stuff we can only do after a transfer */
1117INLINE void
1118transfer_tail (pTHX)
1119{
1120 free_coro_mortal (aTHX);
1121}
1122
1123/*
1124 * this is a _very_ stripped down perl interpreter ;)
1125 */
1126static void
1127cctx_run (void *arg)
1128{
1129#ifdef USE_ITHREADS
1130# if CORO_PTHREAD
1131 PERL_SET_CONTEXT (coro_thx);
1132# endif
1133#endif
1134 {
1135 dTHX;
1136
1137 /* normally we would need to skip the entersub here */
1138 /* not doing so will re-execute it, which is exactly what we want */
1139 /* PL_nop = PL_nop->op_next */
1140
615 /* inject call to cctx_init */ 1141 /* inject a fake subroutine call to cctx_init */
616 prepare_cctx ((coro_cctx *)arg); 1142 cctx_prepare (aTHX_ (coro_cctx *)arg);
617 1143
1144 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX);
1146
618 /* somebody will hit me for both perl_run and PL_restartop */ 1147 /* somebody or something will hit me for both perl_run and PL_restartop */
619 PL_restartop = PL_op; 1148 PL_restartop = PL_op;
620 perl_run (PL_curinterp); 1149 perl_run (PL_curinterp);
1150 /*
1151 * Unfortunately, there is no way to get at the return values of the
1152 * coro body here, as perl_run destroys these
1153 */
621 1154
622 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1155 /*
623 abort (); 1156 * If perl-run returns we assume exit() was being called or the coro
1157 * fell off the end, which seems to be the only valid (non-bug)
1158 * reason for perl_run to return. We try to exit by jumping to the
1159 * bootstrap-time "top" top_env, as we cannot restore the "main"
1160 * coroutine as Coro has no such concept
1161 */
1162 PL_top_env = main_top_env;
1163 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1164 }
624} 1165}
625 1166
626static coro_cctx * 1167static coro_cctx *
627cctx_new () 1168cctx_new ()
628{ 1169{
629 coro_cctx *cctx; 1170 coro_cctx *cctx;
630 1171
631 ++cctx_count; 1172 ++cctx_count;
632
633 Newz (0, cctx, 1, coro_cctx); 1173 New (0, cctx, 1, coro_cctx);
1174
1175 cctx->gen = cctx_gen;
1176 cctx->flags = 0;
1177 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1178
1179 return cctx;
1180}
1181
1182/* create a new cctx only suitable as source */
1183static coro_cctx *
1184cctx_new_empty ()
1185{
1186 coro_cctx *cctx = cctx_new ();
1187
1188 cctx->sptr = 0;
1189 coro_create (&cctx->cctx, 0, 0, 0, 0);
1190
1191 return cctx;
1192}
1193
1194/* create a new cctx suitable as destination/running a perl interpreter */
1195static coro_cctx *
1196cctx_new_run ()
1197{
1198 coro_cctx *cctx = cctx_new ();
1199 void *stack_start;
1200 size_t stack_size;
634 1201
635#if HAVE_MMAP 1202#if HAVE_MMAP
636
637 cctx->ssize = ((CORO_STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1203 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
638 /* mmap supposedly does allocate-on-write for us */ 1204 /* mmap supposedly does allocate-on-write for us */
639 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1205 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
640 1206
641 if (cctx->sptr != (void *)-1) 1207 if (cctx->sptr != (void *)-1)
642 { 1208 {
643# if CORO_STACKGUARD 1209 #if CORO_STACKGUARD
644 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1210 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
645# endif 1211 #endif
646 REGISTER_STACK ( 1212 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
647 cctx, 1213 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
648 CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr, 1214 cctx->flags |= CC_MAPPED;
649 cctx->ssize + (char *)cctx->sptr
650 );
651
652 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
653 } 1215 }
654 else 1216 else
655#endif 1217#endif
656 { 1218 {
657 cctx->ssize = -CORO_STACKSIZE * (long)sizeof (long); 1219 cctx->ssize = cctx_stacksize * (long)sizeof (long);
658 New (0, cctx->sptr, CORO_STACKSIZE, long); 1220 New (0, cctx->sptr, cctx_stacksize, long);
659 1221
660 if (!cctx->sptr) 1222 if (!cctx->sptr)
661 { 1223 {
662 perror ("FATAL: unable to allocate stack for coroutine"); 1224 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
663 _exit (EXIT_FAILURE); 1225 _exit (EXIT_FAILURE);
664 } 1226 }
665 1227
666 REGISTER_STACK ( 1228 stack_start = cctx->sptr;
667 cctx, 1229 stack_size = cctx->ssize;
668 (char *)cctx->sptr,
669 (char *)cctx->sptr - cctx->ssize
670 );
671
672 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);
673 } 1230 }
1231
1232 #if CORO_USE_VALGRIND
1233 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1234 #endif
1235
1236 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
674 1237
675 return cctx; 1238 return cctx;
676} 1239}
677 1240
678static void 1241static void
… …
680{ 1243{
681 if (!cctx) 1244 if (!cctx)
682 return; 1245 return;
683 1246
684 --cctx_count; 1247 --cctx_count;
1248 coro_destroy (&cctx->cctx);
685 1249
1250 /* coro_transfer creates new, empty cctx's */
1251 if (cctx->sptr)
1252 {
686#if CORO_USE_VALGRIND 1253 #if CORO_USE_VALGRIND
687 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1254 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1255 #endif
1256
1257#if HAVE_MMAP
1258 if (cctx->flags & CC_MAPPED)
1259 munmap (cctx->sptr, cctx->ssize);
1260 else
688#endif 1261#endif
689
690#if HAVE_MMAP
691 if (cctx->ssize > 0)
692 munmap (cctx->sptr, cctx->ssize);
693 else
694#endif
695 Safefree (cctx->sptr); 1262 Safefree (cctx->sptr);
1263 }
696 1264
697 Safefree (cctx); 1265 Safefree (cctx);
698} 1266}
699 1267
1268/* wether this cctx should be destructed */
1269#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1270
700static coro_cctx * 1271static coro_cctx *
701cctx_get () 1272cctx_get (pTHX)
702{ 1273{
703 coro_cctx *cctx; 1274 while (expect_true (cctx_first))
704
705 if (cctx_first)
706 { 1275 {
707 cctx = cctx_first; 1276 coro_cctx *cctx = cctx_first;
708 cctx_first = cctx->next; 1277 cctx_first = cctx->next;
709 --cctx_idle; 1278 --cctx_idle;
710 } 1279
711 else 1280 if (expect_true (!CCTX_EXPIRED (cctx)))
712 { 1281 return cctx;
713 cctx = cctx_new (); 1282
714 PL_op = PL_op->op_next; 1283 cctx_destroy (cctx);
715 } 1284 }
716 1285
717 return cctx; 1286 return cctx_new_run ();
718} 1287}
719 1288
720static void 1289static void
721cctx_put (coro_cctx *cctx) 1290cctx_put (coro_cctx *cctx)
722{ 1291{
1292 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1293
723 /* free another cctx if overlimit */ 1294 /* free another cctx if overlimit */
724 if (cctx_idle >= MAX_IDLE_CCTX) 1295 if (expect_false (cctx_idle >= cctx_max_idle))
725 { 1296 {
726 coro_cctx *first = cctx_first; 1297 coro_cctx *first = cctx_first;
727 cctx_first = first->next; 1298 cctx_first = first->next;
728 --cctx_idle; 1299 --cctx_idle;
729 1300
730 assert (!first->inuse);
731 cctx_destroy (first); 1301 cctx_destroy (first);
732 } 1302 }
733 1303
734 ++cctx_idle; 1304 ++cctx_idle;
735 cctx->next = cctx_first; 1305 cctx->next = cctx_first;
736 cctx_first = cctx; 1306 cctx_first = cctx;
737} 1307}
738 1308
739/** coroutine switching *****************************************************/ 1309/** coroutine switching *****************************************************/
740 1310
741/* never call directly, always through the coro_state_transfer global variable */ 1311static void
742static void NOINLINE
743transfer (struct coro *prev, struct coro *next) 1312transfer_check (pTHX_ struct coro *prev, struct coro *next)
1313{
1314 /* TODO: throwing up here is considered harmful */
1315
1316 if (expect_true (prev != next))
1317 {
1318 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1319 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1320
1321 if (expect_false (next->flags & CF_RUNNING))
1322 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1323
1324 if (expect_false (next->flags & CF_DESTROYED))
1325 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1326
1327#if !PERL_VERSION_ATLEAST (5,10,0)
1328 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1329 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1330#endif
1331 }
1332}
1333
1334/* always use the TRANSFER macro */
1335static void NOINLINE /* noinline so we have a fixed stackframe */
1336transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
744{ 1337{
745 dSTACKLEVEL; 1338 dSTACKLEVEL;
746 1339
747 /* sometimes transfer is only called to set idle_sp */ 1340 /* sometimes transfer is only called to set idle_sp */
748 if (!next) 1341 if (expect_false (!next))
749 { 1342 {
750 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1343 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
751 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1344 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
752 } 1345 }
753 else if (prev != next) 1346 else if (expect_true (prev != next))
754 { 1347 {
755 coro_cctx *prev__cctx; 1348 coro_cctx *prev__cctx;
756 1349
757 if (prev->flags & CF_NEW) 1350 if (expect_false (prev->flags & CF_NEW))
758 { 1351 {
759 /* create a new empty context */ 1352 /* create a new empty/source context */
760 Newz (0, prev->cctx, 1, coro_cctx); 1353 prev->cctx = cctx_new_empty ();
761 prev->cctx->inuse = 1;
762 prev->flags &= ~CF_NEW; 1354 prev->flags &= ~CF_NEW;
763 prev->flags |= CF_RUNNING; 1355 prev->flags |= CF_RUNNING;
764 } 1356 }
765 1357
766 /*TODO: must not croak here */
767 if (!prev->flags & CF_RUNNING)
768 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
769
770 if (next->flags & CF_RUNNING)
771 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
772
773 if (next->flags & CF_DESTROYED)
774 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
775
776 prev->flags &= ~CF_RUNNING; 1358 prev->flags &= ~CF_RUNNING;
777 next->flags |= CF_RUNNING; 1359 next->flags |= CF_RUNNING;
778 1360
779 LOCK; 1361 /* first get rid of the old state */
1362 save_perl (aTHX_ prev);
780 1363
781 if (next->flags & CF_NEW) 1364 if (expect_false (next->flags & CF_NEW))
782 { 1365 {
783 /* need to start coroutine */ 1366 /* need to start coroutine */
784 next->flags &= ~CF_NEW; 1367 next->flags &= ~CF_NEW;
785 /* first get rid of the old state */
786 save_perl (prev);
787 /* setup coroutine call */ 1368 /* setup coroutine call */
788 setup_coro (next); 1369 coro_setup (aTHX_ next);
789 /* need a new stack */
790 assert (!next->cctx);
791 } 1370 }
792 else 1371 else
1372 load_perl (aTHX_ next);
1373
1374 prev__cctx = prev->cctx;
1375
1376 /* possibly untie and reuse the cctx */
1377 if (expect_true (
1378 prev__cctx->idle_sp == STACKLEVEL
1379 && !(prev__cctx->flags & CC_TRACE)
1380 && !force_cctx
1381 ))
793 { 1382 {
794 /* coroutine already started */ 1383 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
795 save_perl (prev); 1384 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
796 load_perl (next); 1385
1386 prev->cctx = 0;
1387
1388 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1389 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1390 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1391 if (!next->cctx)
1392 next->cctx = cctx_get (aTHX);
1393
1394 cctx_put (prev__cctx);
797 } 1395 }
798 1396
799 prev__cctx = prev->cctx; 1397 ++next->usecount;
800 1398
801 /* possibly "free" the cctx */
802 if (prev__cctx->idle_sp == STACKLEVEL)
803 {
804 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
805 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
806
807 prev->cctx = 0;
808
809 cctx_put (prev__cctx);
810 prev__cctx->inuse = 0;
811 }
812
813 if (!next->cctx) 1399 if (expect_true (!next->cctx))
814 {
815 next->cctx = cctx_get (); 1400 next->cctx = cctx_get (aTHX);
816 assert (!next->cctx->inuse);
817 next->cctx->inuse = 1;
818 }
819 1401
820 if (prev__cctx != next->cctx) 1402 if (expect_false (prev__cctx != next->cctx))
821 { 1403 {
822 prev__cctx->top_env = PL_top_env; 1404 prev__cctx->top_env = PL_top_env;
823 PL_top_env = next->cctx->top_env; 1405 PL_top_env = next->cctx->top_env;
824 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1406 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
825 } 1407 }
826 1408
827 free_coro_mortal (); 1409 transfer_tail (aTHX);
828 UNLOCK;
829 } 1410 }
830} 1411}
831 1412
832struct transfer_args 1413#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
833{
834 struct coro *prev, *next;
835};
836
837#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1414#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
838 1415
839/** high level stuff ********************************************************/ 1416/** high level stuff ********************************************************/
840 1417
841static int 1418static int
842coro_state_destroy (struct coro *coro) 1419coro_state_destroy (pTHX_ struct coro *coro)
843{ 1420{
844 if (coro->flags & CF_DESTROYED) 1421 if (coro->flags & CF_DESTROYED)
845 return 0; 1422 return 0;
1423
1424 if (coro->on_destroy)
1425 coro->on_destroy (aTHX_ coro);
846 1426
847 coro->flags |= CF_DESTROYED; 1427 coro->flags |= CF_DESTROYED;
848 1428
849 if (coro->flags & CF_READY) 1429 if (coro->flags & CF_READY)
850 { 1430 {
851 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1431 /* reduce nready, as destroying a ready coro effectively unreadies it */
852 /* alternative: look through all ready queues and remove the coro */ 1432 /* alternative: look through all ready queues and remove the coro */
853 LOCK;
854 --coro_nready; 1433 --coro_nready;
855 UNLOCK;
856 } 1434 }
857 else 1435 else
858 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1436 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
859 1437
860 if (coro->mainstack && coro->mainstack != main_mainstack) 1438 if (coro->mainstack && coro->mainstack != main_mainstack)
861 { 1439 {
862 struct coro temp; 1440 struct coro temp;
863 1441
864 assert (!(coro->flags & CF_RUNNING)); 1442 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
865 1443
866 Zero (&temp, 1, struct coro);
867 temp.save = CORO_SAVE_ALL;
868
869 if (coro->flags & CF_RUNNING)
870 croak ("FATAL: tried to destroy currently running coroutine");
871
872 save_perl (&temp); 1444 save_perl (aTHX_ &temp);
873 load_perl (coro); 1445 load_perl (aTHX_ coro);
874 1446
875 coro_destroy_stacks (); 1447 coro_destruct (aTHX_ coro);
876 1448
877 load_perl (&temp); /* this will get rid of defsv etc.. */ 1449 load_perl (aTHX_ &temp);
878 1450
879 coro->mainstack = 0; 1451 coro->slot = 0;
880 } 1452 }
881 1453
882 cctx_destroy (coro->cctx); 1454 cctx_destroy (coro->cctx);
1455 SvREFCNT_dec (coro->startcv);
883 SvREFCNT_dec (coro->args); 1456 SvREFCNT_dec (coro->args);
1457 SvREFCNT_dec (CORO_THROW);
1458
1459 if (coro->next) coro->next->prev = coro->prev;
1460 if (coro->prev) coro->prev->next = coro->next;
1461 if (coro == coro_first) coro_first = coro->next;
884 1462
885 return 1; 1463 return 1;
886} 1464}
887 1465
888static int 1466static int
889coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1467coro_state_free (pTHX_ SV *sv, MAGIC *mg)
890{ 1468{
891 struct coro *coro = (struct coro *)mg->mg_ptr; 1469 struct coro *coro = (struct coro *)mg->mg_ptr;
892 mg->mg_ptr = 0; 1470 mg->mg_ptr = 0;
893 1471
1472 coro->hv = 0;
1473
894 if (--coro->refcnt < 0) 1474 if (--coro->refcnt < 0)
895 { 1475 {
896 coro_state_destroy (coro); 1476 coro_state_destroy (aTHX_ coro);
897 Safefree (coro); 1477 Safefree (coro);
898 } 1478 }
899 1479
900 return 0; 1480 return 0;
901} 1481}
… …
919#else 1499#else
920# define MGf_DUP 0 1500# define MGf_DUP 0
921#endif 1501#endif
922}; 1502};
923 1503
924static struct coro *
925SvSTATE (SV *coro)
926{
927 HV *stash;
928 MAGIC *mg;
929
930 if (SvROK (coro))
931 coro = SvRV (coro);
932
933 stash = SvSTASH (coro);
934 if (stash != coro_stash && stash != coro_state_stash)
935 {
936 /* very slow, but rare, check */
937 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
938 croak ("Coro::State object required");
939 }
940
941 mg = CORO_MAGIC (coro);
942 return (struct coro *)mg->mg_ptr;
943}
944
945static void 1504static void
946prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1505prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
947{ 1506{
948 ta->prev = SvSTATE (prev_sv); 1507 ta->prev = SvSTATE (prev_sv);
949 ta->next = SvSTATE (next_sv); 1508 ta->next = SvSTATE (next_sv);
1509 TRANSFER_CHECK (*ta);
950} 1510}
951 1511
952static void 1512static void
953api_transfer (SV *prev_sv, SV *next_sv) 1513api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
954{ 1514{
955 struct transfer_args ta; 1515 struct coro_transfer_args ta;
956 1516
957 prepare_transfer (&ta, prev_sv, next_sv); 1517 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
958 TRANSFER (ta); 1518 TRANSFER (ta, 1);
959} 1519}
960 1520
961static int 1521/*****************************************************************************/
962api_save (SV *coro_sv, int new_save) 1522/* gensub: simple closure generation utility */
963{
964 struct coro *coro = SvSTATE (coro_sv);
965 int old_save = coro->save;
966 1523
967 if (new_save >= 0) 1524#define GENSUB_ARG CvXSUBANY (cv).any_ptr
968 coro->save = new_save;
969 1525
970 return old_save; 1526/* create a closure from XS, returns a code reference */
1527/* the arg can be accessed via GENSUB_ARG from the callback */
1528/* the callback must use dXSARGS/XSRETURN */
1529static SV *
1530gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1531{
1532 CV *cv = (CV *)newSV (0);
1533
1534 sv_upgrade ((SV *)cv, SVt_PVCV);
1535
1536 CvANON_on (cv);
1537 CvISXSUB_on (cv);
1538 CvXSUB (cv) = xsub;
1539 GENSUB_ARG = arg;
1540
1541 return newRV_noinc ((SV *)cv);
971} 1542}
972 1543
973/** Coro ********************************************************************/ 1544/** Coro ********************************************************************/
974 1545
975static void 1546INLINE void
976coro_enq (SV *coro_sv) 1547coro_enq (pTHX_ struct coro *coro)
977{ 1548{
978 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1549 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
979} 1550}
980 1551
981static SV * 1552INLINE SV *
982coro_deq (int min_prio) 1553coro_deq (pTHX)
983{ 1554{
984 int prio = PRIO_MAX - PRIO_MIN; 1555 int prio;
985 1556
986 min_prio -= PRIO_MIN;
987 if (min_prio < 0)
988 min_prio = 0;
989
990 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1557 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
991 if (AvFILLp (coro_ready [prio]) >= 0) 1558 if (AvFILLp (coro_ready [prio]) >= 0)
992 return av_shift (coro_ready [prio]); 1559 return av_shift (coro_ready [prio]);
993 1560
994 return 0; 1561 return 0;
995} 1562}
996 1563
997static int 1564static int
998api_ready (SV *coro_sv) 1565api_ready (pTHX_ SV *coro_sv)
999{ 1566{
1000 struct coro *coro; 1567 struct coro *coro;
1568 SV *sv_hook;
1569 void (*xs_hook)(void);
1001 1570
1002 if (SvROK (coro_sv)) 1571 if (SvROK (coro_sv))
1003 coro_sv = SvRV (coro_sv); 1572 coro_sv = SvRV (coro_sv);
1004 1573
1005 coro = SvSTATE (coro_sv); 1574 coro = SvSTATE (coro_sv);
… …
1007 if (coro->flags & CF_READY) 1576 if (coro->flags & CF_READY)
1008 return 0; 1577 return 0;
1009 1578
1010 coro->flags |= CF_READY; 1579 coro->flags |= CF_READY;
1011 1580
1012 LOCK; 1581 sv_hook = coro_nready ? 0 : coro_readyhook;
1013 coro_enq (SvREFCNT_inc (coro_sv)); 1582 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1583
1584 coro_enq (aTHX_ coro);
1014 ++coro_nready; 1585 ++coro_nready;
1015 UNLOCK; 1586
1587 if (sv_hook)
1588 {
1589 dSP;
1590
1591 ENTER;
1592 SAVETMPS;
1593
1594 PUSHMARK (SP);
1595 PUTBACK;
1596 call_sv (sv_hook, G_VOID | G_DISCARD);
1597
1598 FREETMPS;
1599 LEAVE;
1600 }
1601
1602 if (xs_hook)
1603 xs_hook ();
1016 1604
1017 return 1; 1605 return 1;
1018} 1606}
1019 1607
1020static int 1608static int
1021api_is_ready (SV *coro_sv) 1609api_is_ready (pTHX_ SV *coro_sv)
1022{ 1610{
1023 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1611 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1024} 1612}
1025 1613
1026static void 1614INLINE void
1027prepare_schedule (struct transfer_args *ta) 1615prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1028{ 1616{
1029 SV *prev_sv, *next_sv; 1617 SV *prev_sv, *next_sv;
1030 1618
1031 for (;;) 1619 for (;;)
1032 { 1620 {
1033 LOCK;
1034 next_sv = coro_deq (PRIO_MIN); 1621 next_sv = coro_deq (aTHX);
1035 1622
1036 /* nothing to schedule: call the idle handler */ 1623 /* nothing to schedule: call the idle handler */
1037 if (!next_sv) 1624 if (expect_false (!next_sv))
1038 { 1625 {
1039 dSP; 1626 dSP;
1040 UNLOCK;
1041 1627
1042 ENTER; 1628 ENTER;
1043 SAVETMPS; 1629 SAVETMPS;
1044 1630
1045 PUSHMARK (SP); 1631 PUSHMARK (SP);
1046 PUTBACK; 1632 PUTBACK;
1047 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1633 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1048 1634
1049 FREETMPS; 1635 FREETMPS;
1050 LEAVE; 1636 LEAVE;
1051 continue; 1637 continue;
1052 } 1638 }
1053 1639
1054 ta->next = SvSTATE (next_sv); 1640 ta->next = SvSTATE_hv (next_sv);
1055 1641
1056 /* cannot transfer to destroyed coros, skip and look for next */ 1642 /* cannot transfer to destroyed coros, skip and look for next */
1057 if (ta->next->flags & CF_DESTROYED) 1643 if (expect_false (ta->next->flags & CF_DESTROYED))
1058 { 1644 {
1059 UNLOCK;
1060 SvREFCNT_dec (next_sv); 1645 SvREFCNT_dec (next_sv);
1061 /* coro_nready is already taken care of by destroy */ 1646 /* coro_nready has already been taken care of by destroy */
1062 continue; 1647 continue;
1063 } 1648 }
1064 1649
1065 --coro_nready; 1650 --coro_nready;
1066 UNLOCK;
1067 break; 1651 break;
1068 } 1652 }
1069 1653
1070 /* free this only after the transfer */ 1654 /* free this only after the transfer */
1071 prev_sv = SvRV (coro_current); 1655 prev_sv = SvRV (coro_current);
1656 ta->prev = SvSTATE_hv (prev_sv);
1657 TRANSFER_CHECK (*ta);
1658 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1659 ta->next->flags &= ~CF_READY;
1072 SvRV_set (coro_current, next_sv); 1660 SvRV_set (coro_current, next_sv);
1073 ta->prev = SvSTATE (prev_sv);
1074 1661
1075 assert (ta->next->flags & CF_READY);
1076 ta->next->flags &= ~CF_READY;
1077
1078 LOCK;
1079 free_coro_mortal (); 1662 free_coro_mortal (aTHX);
1080 coro_mortal = prev_sv; 1663 coro_mortal = prev_sv;
1081 UNLOCK;
1082} 1664}
1083 1665
1084static void 1666INLINE void
1085prepare_cede (struct transfer_args *ta) 1667prepare_cede (pTHX_ struct coro_transfer_args *ta)
1086{ 1668{
1087 api_ready (coro_current); 1669 api_ready (aTHX_ coro_current);
1088 prepare_schedule (ta); 1670 prepare_schedule (aTHX_ ta);
1671}
1672
1673INLINE void
1674prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1675{
1676 SV *prev = SvRV (coro_current);
1677
1678 if (coro_nready)
1679 {
1680 prepare_schedule (aTHX_ ta);
1681 api_ready (aTHX_ prev);
1682 }
1683 else
1684 prepare_nop (aTHX_ ta);
1685}
1686
1687static void
1688api_schedule (pTHX)
1689{
1690 struct coro_transfer_args ta;
1691
1692 prepare_schedule (aTHX_ &ta);
1693 TRANSFER (ta, 1);
1089} 1694}
1090 1695
1091static int 1696static int
1092prepare_cede_notself (struct transfer_args *ta) 1697api_cede (pTHX)
1093{ 1698{
1094 if (coro_nready) 1699 struct coro_transfer_args ta;
1700
1701 prepare_cede (aTHX_ &ta);
1702
1703 if (expect_true (ta.prev != ta.next))
1095 { 1704 {
1096 SV *prev = SvRV (coro_current); 1705 TRANSFER (ta, 1);
1097 prepare_schedule (ta);
1098 api_ready (prev);
1099 return 1; 1706 return 1;
1100 } 1707 }
1101 else 1708 else
1102 return 0; 1709 return 0;
1103} 1710}
1104 1711
1105static void
1106api_schedule (void)
1107{
1108 struct transfer_args ta;
1109
1110 prepare_schedule (&ta);
1111 TRANSFER (ta);
1112}
1113
1114static int 1712static int
1115api_cede (void) 1713api_cede_notself (pTHX)
1116{ 1714{
1715 if (coro_nready)
1716 {
1117 struct transfer_args ta; 1717 struct coro_transfer_args ta;
1118 1718
1119 prepare_cede (&ta); 1719 prepare_cede_notself (aTHX_ &ta);
1120
1121 if (ta.prev != ta.next)
1122 {
1123 TRANSFER (ta); 1720 TRANSFER (ta, 1);
1124 return 1; 1721 return 1;
1125 } 1722 }
1126 else 1723 else
1127 return 0; 1724 return 0;
1128} 1725}
1129 1726
1727static void
1728api_trace (pTHX_ SV *coro_sv, int flags)
1729{
1730 struct coro *coro = SvSTATE (coro_sv);
1731
1732 if (flags & CC_TRACE)
1733 {
1734 if (!coro->cctx)
1735 coro->cctx = cctx_new_run ();
1736 else if (!(coro->cctx->flags & CC_TRACE))
1737 croak ("cannot enable tracing on coroutine with custom stack,");
1738
1739 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1740 }
1741 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1742 {
1743 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1744
1745 if (coro->flags & CF_RUNNING)
1746 PL_runops = RUNOPS_DEFAULT;
1747 else
1748 coro->slot->runops = RUNOPS_DEFAULT;
1749 }
1750}
1751
1752/*****************************************************************************/
1753/* async pool handler */
1754
1130static int 1755static int
1131api_cede_notself (void) 1756slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1132{ 1757{
1758 HV *hv = (HV *)SvRV (coro_current);
1759 struct coro *coro = (struct coro *)frame->data;
1760
1761 if (!coro->invoke_cb)
1762 return 1; /* loop till we have invoke */
1763 else
1764 {
1765 hv_store (hv, "desc", sizeof ("desc") - 1,
1766 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1767
1768 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1769
1770 {
1771 dSP;
1772 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1773 PUTBACK;
1774 }
1775
1776 SvREFCNT_dec (GvAV (PL_defgv));
1777 GvAV (PL_defgv) = coro->invoke_av;
1778 coro->invoke_av = 0;
1779
1780 return 0;
1781 }
1782}
1783
1784static void
1785slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1786{
1787 HV *hv = (HV *)SvRV (coro_current);
1788 struct coro *coro = SvSTATE_hv ((SV *)hv);
1789
1790 if (expect_true (coro->saved_deffh))
1791 {
1792 /* subsequent iteration */
1793 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1794 coro->saved_deffh = 0;
1795
1796 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1797 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1798 {
1799 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1800 coro->invoke_av = newAV ();
1801
1802 frame->prepare = prepare_nop;
1803 }
1804 else
1805 {
1806 av_clear (GvAV (PL_defgv));
1807 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1808
1809 coro->prio = 0;
1810
1811 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1812 api_trace (aTHX_ coro_current, 0);
1813
1814 frame->prepare = prepare_schedule;
1815 av_push (av_async_pool, SvREFCNT_inc (hv));
1816 }
1817 }
1818 else
1819 {
1820 /* first iteration, simply fall through */
1821 frame->prepare = prepare_nop;
1822 }
1823
1824 frame->check = slf_check_pool_handler;
1825 frame->data = (void *)coro;
1826}
1827
1828/*****************************************************************************/
1829/* rouse callback */
1830
1831#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1832
1833static void
1834coro_rouse_callback (pTHX_ CV *cv)
1835{
1836 dXSARGS;
1837 SV *data = (SV *)GENSUB_ARG;
1838
1839 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1840 {
1841 /* first call, set args */
1842 AV *av = newAV ();
1843 SV *coro = SvRV (data);
1844
1845 SvRV_set (data, (SV *)av);
1846 api_ready (aTHX_ coro);
1847 SvREFCNT_dec (coro);
1848
1849 /* better take a full copy of the arguments */
1850 while (items--)
1851 av_store (av, items, newSVsv (ST (items)));
1852 }
1853
1854 XSRETURN_EMPTY;
1855}
1856
1857static int
1858slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1859{
1860 SV *data = (SV *)frame->data;
1861
1862 if (CORO_THROW)
1863 return 0;
1864
1865 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1866 return 1;
1867
1868 /* now push all results on the stack */
1869 {
1870 dSP;
1871 AV *av = (AV *)SvRV (data);
1872 int i;
1873
1874 EXTEND (SP, AvFILLp (av) + 1);
1875 for (i = 0; i <= AvFILLp (av); ++i)
1876 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1877
1878 /* we have stolen the elements, so ste length to zero and free */
1879 AvFILLp (av) = -1;
1880 av_undef (av);
1881
1882 PUTBACK;
1883 }
1884
1885 return 0;
1886}
1887
1888static void
1889slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1890{
1891 SV *cb;
1892
1893 if (items)
1894 cb = arg [0];
1895 else
1896 {
1897 struct coro *coro = SvSTATE_current;
1898
1899 if (!coro->rouse_cb)
1900 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1901
1902 cb = sv_2mortal (coro->rouse_cb);
1903 coro->rouse_cb = 0;
1904 }
1905
1906 if (!SvROK (cb)
1907 || SvTYPE (SvRV (cb)) != SVt_PVCV
1908 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1909 croak ("Coro::rouse_wait called with illegal callback argument,");
1910
1911 {
1912 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1913 SV *data = (SV *)GENSUB_ARG;
1914
1915 frame->data = (void *)data;
1916 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1917 frame->check = slf_check_rouse_wait;
1918 }
1919}
1920
1921static SV *
1922coro_new_rouse_cb (pTHX)
1923{
1924 HV *hv = (HV *)SvRV (coro_current);
1925 struct coro *coro = SvSTATE_hv (hv);
1926 SV *data = newRV_inc ((SV *)hv);
1927 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1928
1929 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1930 SvREFCNT_dec (data); /* magicext increases the refcount */
1931
1932 SvREFCNT_dec (coro->rouse_cb);
1933 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1934
1935 return cb;
1936}
1937
1938/*****************************************************************************/
1939/* schedule-like-function opcode (SLF) */
1940
1941static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1942static const CV *slf_cv;
1943static SV **slf_argv;
1944static int slf_argc, slf_arga; /* count, allocated */
1945static I32 slf_ax; /* top of stack, for restore */
1946
1947/* this restores the stack in the case we patched the entersub, to */
1948/* recreate the stack frame as perl will on following calls */
1949/* since entersub cleared the stack */
1950static OP *
1951pp_restore (pTHX)
1952{
1953 int i;
1954 SV **SP = PL_stack_base + slf_ax;
1955
1956 PUSHMARK (SP);
1957
1958 EXTEND (SP, slf_argc + 1);
1959
1960 for (i = 0; i < slf_argc; ++i)
1961 PUSHs (sv_2mortal (slf_argv [i]));
1962
1963 PUSHs ((SV *)CvGV (slf_cv));
1964
1965 RETURNOP (slf_restore.op_first);
1966}
1967
1968static void
1969slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1970{
1971 SV **arg = (SV **)slf_frame.data;
1972
1973 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1974}
1975
1976static void
1977slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1978{
1979 if (items != 2)
1980 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1981
1982 frame->prepare = slf_prepare_transfer;
1983 frame->check = slf_check_nop;
1984 frame->data = (void *)arg; /* let's hope it will stay valid */
1985}
1986
1987static void
1988slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1989{
1990 frame->prepare = prepare_schedule;
1991 frame->check = slf_check_nop;
1992}
1993
1994static void
1995slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1996{
1997 frame->prepare = prepare_cede;
1998 frame->check = slf_check_nop;
1999}
2000
2001static void
2002slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2003{
2004 frame->prepare = prepare_cede_notself;
2005 frame->check = slf_check_nop;
2006}
2007
2008/*
2009 * these not obviously related functions are all rolled into one
2010 * function to increase chances that they all will call transfer with the same
2011 * stack offset
2012 * SLF stands for "schedule-like-function".
2013 */
2014static OP *
2015pp_slf (pTHX)
2016{
2017 I32 checkmark; /* mark SP to see how many elements check has pushed */
2018
2019 /* set up the slf frame, unless it has already been set-up */
2020 /* the latter happens when a new coro has been started */
2021 /* or when a new cctx was attached to an existing coroutine */
2022 if (expect_true (!slf_frame.prepare))
2023 {
2024 /* first iteration */
2025 dSP;
2026 SV **arg = PL_stack_base + TOPMARK + 1;
2027 int items = SP - arg; /* args without function object */
2028 SV *gv = *sp;
2029
2030 /* do a quick consistency check on the "function" object, and if it isn't */
2031 /* for us, divert to the real entersub */
2032 if (SvTYPE (gv) != SVt_PVGV
2033 || !GvCV (gv)
2034 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2035 return PL_ppaddr[OP_ENTERSUB](aTHX);
2036
2037 if (!(PL_op->op_flags & OPf_STACKED))
2038 {
2039 /* ampersand-form of call, use @_ instead of stack */
2040 AV *av = GvAV (PL_defgv);
2041 arg = AvARRAY (av);
2042 items = AvFILLp (av) + 1;
2043 }
2044
2045 /* now call the init function, which needs to set up slf_frame */
2046 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2047 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2048
2049 /* pop args */
2050 SP = PL_stack_base + POPMARK;
2051
2052 PUTBACK;
2053 }
2054
2055 /* now that we have a slf_frame, interpret it! */
2056 /* we use a callback system not to make the code needlessly */
2057 /* complicated, but so we can run multiple perl coros from one cctx */
2058
2059 do
2060 {
1133 struct transfer_args ta; 2061 struct coro_transfer_args ta;
1134 2062
1135 if (prepare_cede_notself (&ta)) 2063 slf_frame.prepare (aTHX_ &ta);
1136 {
1137 TRANSFER (ta); 2064 TRANSFER (ta, 0);
2065
2066 checkmark = PL_stack_sp - PL_stack_base;
2067 }
2068 while (slf_frame.check (aTHX_ &slf_frame));
2069
2070 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2071
2072 /* exception handling */
2073 if (expect_false (CORO_THROW))
2074 {
2075 SV *exception = sv_2mortal (CORO_THROW);
2076
2077 CORO_THROW = 0;
2078 sv_setsv (ERRSV, exception);
2079 croak (0);
2080 }
2081
2082 /* return value handling - mostly like entersub */
2083 /* make sure we put something on the stack in scalar context */
2084 if (GIMME_V == G_SCALAR)
2085 {
2086 dSP;
2087 SV **bot = PL_stack_base + checkmark;
2088
2089 if (sp == bot) /* too few, push undef */
2090 bot [1] = &PL_sv_undef;
2091 else if (sp != bot + 1) /* too many, take last one */
2092 bot [1] = *sp;
2093
2094 SP = bot + 1;
2095
2096 PUTBACK;
2097 }
2098
2099 return NORMAL;
2100}
2101
2102static void
2103api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2104{
2105 int i;
2106 SV **arg = PL_stack_base + ax;
2107 int items = PL_stack_sp - arg + 1;
2108
2109 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2110
2111 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2112 && PL_op->op_ppaddr != pp_slf)
2113 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2114
2115 CvFLAGS (cv) |= CVf_SLF;
2116 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2117 slf_cv = cv;
2118
2119 /* we patch the op, and then re-run the whole call */
2120 /* we have to put the same argument on the stack for this to work */
2121 /* and this will be done by pp_restore */
2122 slf_restore.op_next = (OP *)&slf_restore;
2123 slf_restore.op_type = OP_CUSTOM;
2124 slf_restore.op_ppaddr = pp_restore;
2125 slf_restore.op_first = PL_op;
2126
2127 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2128
2129 if (PL_op->op_flags & OPf_STACKED)
2130 {
2131 if (items > slf_arga)
2132 {
2133 slf_arga = items;
2134 free (slf_argv);
2135 slf_argv = malloc (slf_arga * sizeof (SV *));
2136 }
2137
2138 slf_argc = items;
2139
2140 for (i = 0; i < items; ++i)
2141 slf_argv [i] = SvREFCNT_inc (arg [i]);
2142 }
2143 else
2144 slf_argc = 0;
2145
2146 PL_op->op_ppaddr = pp_slf;
2147 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2148
2149 PL_op = (OP *)&slf_restore;
2150}
2151
2152/*****************************************************************************/
2153/* PerlIO::cede */
2154
2155typedef struct
2156{
2157 PerlIOBuf base;
2158 NV next, every;
2159} PerlIOCede;
2160
2161static IV
2162PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2163{
2164 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2165
2166 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2167 self->next = nvtime () + self->every;
2168
2169 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2170}
2171
2172static SV *
2173PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2174{
2175 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2176
2177 return newSVnv (self->every);
2178}
2179
2180static IV
2181PerlIOCede_flush (pTHX_ PerlIO *f)
2182{
2183 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2184 double now = nvtime ();
2185
2186 if (now >= self->next)
2187 {
2188 api_cede (aTHX);
2189 self->next = now + self->every;
2190 }
2191
2192 return PerlIOBuf_flush (aTHX_ f);
2193}
2194
2195static PerlIO_funcs PerlIO_cede =
2196{
2197 sizeof(PerlIO_funcs),
2198 "cede",
2199 sizeof(PerlIOCede),
2200 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2201 PerlIOCede_pushed,
2202 PerlIOBuf_popped,
2203 PerlIOBuf_open,
2204 PerlIOBase_binmode,
2205 PerlIOCede_getarg,
2206 PerlIOBase_fileno,
2207 PerlIOBuf_dup,
2208 PerlIOBuf_read,
2209 PerlIOBuf_unread,
2210 PerlIOBuf_write,
2211 PerlIOBuf_seek,
2212 PerlIOBuf_tell,
2213 PerlIOBuf_close,
2214 PerlIOCede_flush,
2215 PerlIOBuf_fill,
2216 PerlIOBase_eof,
2217 PerlIOBase_error,
2218 PerlIOBase_clearerr,
2219 PerlIOBase_setlinebuf,
2220 PerlIOBuf_get_base,
2221 PerlIOBuf_bufsiz,
2222 PerlIOBuf_get_ptr,
2223 PerlIOBuf_get_cnt,
2224 PerlIOBuf_set_ptrcnt,
2225};
2226
2227/*****************************************************************************/
2228/* Coro::Semaphore & Coro::Signal */
2229
2230static SV *
2231coro_waitarray_new (pTHX_ int count)
2232{
2233 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2234 AV *av = newAV ();
2235 SV **ary;
2236
2237 /* unfortunately, building manually saves memory */
2238 Newx (ary, 2, SV *);
2239 AvALLOC (av) = ary;
2240 /*AvARRAY (av) = ary;*/
2241 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2242 AvMAX (av) = 1;
2243 AvFILLp (av) = 0;
2244 ary [0] = newSViv (count);
2245
2246 return newRV_noinc ((SV *)av);
2247}
2248
2249/* semaphore */
2250
2251static void
2252coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2253{
2254 SV *count_sv = AvARRAY (av)[0];
2255 IV count = SvIVX (count_sv);
2256
2257 count += adjust;
2258 SvIVX (count_sv) = count;
2259
2260 /* now wake up as many waiters as are expected to lock */
2261 while (count > 0 && AvFILLp (av) > 0)
2262 {
2263 SV *cb;
2264
2265 /* swap first two elements so we can shift a waiter */
2266 AvARRAY (av)[0] = AvARRAY (av)[1];
2267 AvARRAY (av)[1] = count_sv;
2268 cb = av_shift (av);
2269
2270 if (SvOBJECT (cb))
2271 {
2272 api_ready (aTHX_ cb);
2273 --count;
2274 }
2275 else if (SvTYPE (cb) == SVt_PVCV)
2276 {
2277 dSP;
2278 PUSHMARK (SP);
2279 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2280 PUTBACK;
2281 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2282 }
2283
2284 SvREFCNT_dec (cb);
2285 }
2286}
2287
2288static void
2289coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2290{
2291 /* call $sem->adjust (0) to possibly wake up some other waiters */
2292 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2293}
2294
2295static int
2296slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2297{
2298 AV *av = (AV *)frame->data;
2299 SV *count_sv = AvARRAY (av)[0];
2300
2301 /* if we are about to throw, don't actually acquire the lock, just throw */
2302 if (CORO_THROW)
2303 return 0;
2304 else if (SvIVX (count_sv) > 0)
2305 {
2306 SvSTATE_current->on_destroy = 0;
2307
2308 if (acquire)
2309 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2310 else
2311 coro_semaphore_adjust (aTHX_ av, 0);
2312
2313 return 0;
2314 }
2315 else
2316 {
2317 int i;
2318 /* if we were woken up but can't down, we look through the whole */
2319 /* waiters list and only add us if we aren't in there already */
2320 /* this avoids some degenerate memory usage cases */
2321
2322 for (i = 1; i <= AvFILLp (av); ++i)
2323 if (AvARRAY (av)[i] == SvRV (coro_current))
2324 return 1;
2325
2326 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
1138 return 1; 2327 return 1;
1139 } 2328 }
2329}
2330
2331static int
2332slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2333{
2334 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2335}
2336
2337static int
2338slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2339{
2340 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2341}
2342
2343static void
2344slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2345{
2346 AV *av = (AV *)SvRV (arg [0]);
2347
2348 if (SvIVX (AvARRAY (av)[0]) > 0)
2349 {
2350 frame->data = (void *)av;
2351 frame->prepare = prepare_nop;
2352 }
1140 else 2353 else
2354 {
2355 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2356
2357 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2358 frame->prepare = prepare_schedule;
2359
2360 /* to avoid race conditions when a woken-up coro gets terminated */
2361 /* we arrange for a temporary on_destroy that calls adjust (0) */
2362 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2363 }
2364}
2365
2366static void
2367slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2368{
2369 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2370 frame->check = slf_check_semaphore_down;
2371}
2372
2373static void
2374slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2375{
2376 if (items >= 2)
2377 {
2378 /* callback form */
2379 AV *av = (AV *)SvRV (arg [0]);
2380 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2381
2382 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2383
2384 if (SvIVX (AvARRAY (av)[0]) > 0)
2385 coro_semaphore_adjust (aTHX_ av, 0);
2386
2387 frame->prepare = prepare_nop;
2388 frame->check = slf_check_nop;
2389 }
2390 else
2391 {
2392 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2393 frame->check = slf_check_semaphore_wait;
2394 }
2395}
2396
2397/* signal */
2398
2399static void
2400coro_signal_wake (pTHX_ AV *av, int count)
2401{
2402 SvIVX (AvARRAY (av)[0]) = 0;
2403
2404 /* now signal count waiters */
2405 while (count > 0 && AvFILLp (av) > 0)
2406 {
2407 SV *cb;
2408
2409 /* swap first two elements so we can shift a waiter */
2410 cb = AvARRAY (av)[0];
2411 AvARRAY (av)[0] = AvARRAY (av)[1];
2412 AvARRAY (av)[1] = cb;
2413
2414 cb = av_shift (av);
2415
2416 api_ready (aTHX_ cb);
2417 sv_setiv (cb, 0); /* signal waiter */
2418 SvREFCNT_dec (cb);
2419
2420 --count;
2421 }
2422}
2423
2424static int
2425slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2426{
2427 /* if we are about to throw, also stop waiting */
2428 return SvROK ((SV *)frame->data) && !CORO_THROW;
2429}
2430
2431static void
2432slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2433{
2434 AV *av = (AV *)SvRV (arg [0]);
2435
2436 if (SvIVX (AvARRAY (av)[0]))
2437 {
2438 SvIVX (AvARRAY (av)[0]) = 0;
2439 frame->prepare = prepare_nop;
2440 frame->check = slf_check_nop;
2441 }
2442 else
2443 {
2444 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2445
2446 av_push (av, waiter);
2447
2448 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2449 frame->prepare = prepare_schedule;
2450 frame->check = slf_check_signal_wait;
2451 }
2452}
2453
2454/*****************************************************************************/
2455/* Coro::AIO */
2456
2457#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2458
2459/* helper storage struct */
2460struct io_state
2461{
2462 int errorno;
2463 I32 laststype; /* U16 in 5.10.0 */
2464 int laststatval;
2465 Stat_t statcache;
2466};
2467
2468static void
2469coro_aio_callback (pTHX_ CV *cv)
2470{
2471 dXSARGS;
2472 AV *state = (AV *)GENSUB_ARG;
2473 SV *coro = av_pop (state);
2474 SV *data_sv = newSV (sizeof (struct io_state));
2475
2476 av_extend (state, items - 1);
2477
2478 sv_upgrade (data_sv, SVt_PV);
2479 SvCUR_set (data_sv, sizeof (struct io_state));
2480 SvPOK_only (data_sv);
2481
2482 {
2483 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2484
2485 data->errorno = errno;
2486 data->laststype = PL_laststype;
2487 data->laststatval = PL_laststatval;
2488 data->statcache = PL_statcache;
2489 }
2490
2491 /* now build the result vector out of all the parameters and the data_sv */
2492 {
2493 int i;
2494
2495 for (i = 0; i < items; ++i)
2496 av_push (state, SvREFCNT_inc_NN (ST (i)));
2497 }
2498
2499 av_push (state, data_sv);
2500
2501 api_ready (aTHX_ coro);
2502 SvREFCNT_dec (coro);
2503 SvREFCNT_dec ((AV *)state);
2504}
2505
2506static int
2507slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2508{
2509 AV *state = (AV *)frame->data;
2510
2511 /* if we are about to throw, return early */
2512 /* this does not cancel the aio request, but at least */
2513 /* it quickly returns */
2514 if (CORO_THROW)
1141 return 0; 2515 return 0;
1142}
1143 2516
2517 /* one element that is an RV? repeat! */
2518 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2519 return 1;
2520
2521 /* restore status */
2522 {
2523 SV *data_sv = av_pop (state);
2524 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2525
2526 errno = data->errorno;
2527 PL_laststype = data->laststype;
2528 PL_laststatval = data->laststatval;
2529 PL_statcache = data->statcache;
2530
2531 SvREFCNT_dec (data_sv);
2532 }
2533
2534 /* push result values */
2535 {
2536 dSP;
2537 int i;
2538
2539 EXTEND (SP, AvFILLp (state) + 1);
2540 for (i = 0; i <= AvFILLp (state); ++i)
2541 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2542
2543 PUTBACK;
2544 }
2545
2546 return 0;
2547}
2548
2549static void
2550slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2551{
2552 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2553 SV *coro_hv = SvRV (coro_current);
2554 struct coro *coro = SvSTATE_hv (coro_hv);
2555
2556 /* put our coroutine id on the state arg */
2557 av_push (state, SvREFCNT_inc_NN (coro_hv));
2558
2559 /* first see whether we have a non-zero priority and set it as AIO prio */
2560 if (coro->prio)
2561 {
2562 dSP;
2563
2564 static SV *prio_cv;
2565 static SV *prio_sv;
2566
2567 if (expect_false (!prio_cv))
2568 {
2569 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2570 prio_sv = newSViv (0);
2571 }
2572
2573 PUSHMARK (SP);
2574 sv_setiv (prio_sv, coro->prio);
2575 XPUSHs (prio_sv);
2576
2577 PUTBACK;
2578 call_sv (prio_cv, G_VOID | G_DISCARD);
2579 }
2580
2581 /* now call the original request */
2582 {
2583 dSP;
2584 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2585 int i;
2586
2587 PUSHMARK (SP);
2588
2589 /* first push all args to the stack */
2590 EXTEND (SP, items + 1);
2591
2592 for (i = 0; i < items; ++i)
2593 PUSHs (arg [i]);
2594
2595 /* now push the callback closure */
2596 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2597
2598 /* now call the AIO function - we assume our request is uncancelable */
2599 PUTBACK;
2600 call_sv ((SV *)req, G_VOID | G_DISCARD);
2601 }
2602
2603 /* now that the requets is going, we loop toll we have a result */
2604 frame->data = (void *)state;
2605 frame->prepare = prepare_schedule;
2606 frame->check = slf_check_aio_req;
2607}
2608
2609static void
2610coro_aio_req_xs (pTHX_ CV *cv)
2611{
2612 dXSARGS;
2613
2614 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2615
2616 XSRETURN_EMPTY;
2617}
2618
2619/*****************************************************************************/
2620
1144MODULE = Coro::State PACKAGE = Coro::State 2621MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1145 2622
1146PROTOTYPES: DISABLE 2623PROTOTYPES: DISABLE
1147 2624
1148BOOT: 2625BOOT:
1149{ 2626{
1150#ifdef USE_ITHREADS 2627#ifdef USE_ITHREADS
1151 MUTEX_INIT (&coro_mutex); 2628# if CORO_PTHREAD
2629 coro_thx = PERL_GET_CONTEXT;
2630# endif
1152#endif 2631#endif
1153 BOOT_PAGESIZE; 2632 BOOT_PAGESIZE;
1154 2633
2634 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2635 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2636
2637 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2638 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2639 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2640
2641 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2642 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2643 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2644
1155 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2645 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1156 2646
2647 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
2648 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1157 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 2649 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1158 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1159 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1160 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1161 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 2650 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1162 2651
1163 main_mainstack = PL_mainstack; 2652 main_mainstack = PL_mainstack;
2653 main_top_env = PL_top_env;
1164 2654
2655 while (main_top_env->je_prev)
2656 main_top_env = main_top_env->je_prev;
2657
2658 {
2659 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2660
2661 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2662 hv_store_ent (PL_custom_op_names, slf,
2663 newSVpv ("coro_slf", 0), 0);
2664
2665 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2666 hv_store_ent (PL_custom_op_descs, slf,
2667 newSVpv ("coro schedule like function", 0), 0);
2668 }
2669
1165 coroapi.ver = CORO_API_VERSION; 2670 coroapi.ver = CORO_API_VERSION;
2671 coroapi.rev = CORO_API_REVISION;
2672
1166 coroapi.transfer = api_transfer; 2673 coroapi.transfer = api_transfer;
2674
2675 coroapi.sv_state = SvSTATE_;
2676 coroapi.execute_slf = api_execute_slf;
2677 coroapi.prepare_nop = prepare_nop;
2678 coroapi.prepare_schedule = prepare_schedule;
2679 coroapi.prepare_cede = prepare_cede;
2680 coroapi.prepare_cede_notself = prepare_cede_notself;
2681
2682 {
2683 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2684
2685 if (!svp) croak ("Time::HiRes is required");
2686 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2687
2688 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2689 }
1167 2690
1168 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2691 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1169} 2692}
1170 2693
1171SV * 2694SV *
1172new (char *klass, ...) 2695new (char *klass, ...)
2696 ALIAS:
2697 Coro::new = 1
1173 CODE: 2698 CODE:
1174{ 2699{
1175 struct coro *coro; 2700 struct coro *coro;
2701 MAGIC *mg;
1176 HV *hv; 2702 HV *hv;
2703 CV *cb;
1177 int i; 2704 int i;
1178 2705
2706 if (items > 1)
2707 {
2708 cb = coro_sv_2cv (aTHX_ ST (1));
2709
2710 if (!ix)
2711 {
2712 if (CvISXSUB (cb))
2713 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2714
2715 if (!CvROOT (cb))
2716 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2717 }
2718 }
2719
1179 Newz (0, coro, 1, struct coro); 2720 Newz (0, coro, 1, struct coro);
1180 coro->args = newAV (); 2721 coro->args = newAV ();
1181 coro->save = CORO_SAVE_ALL;
1182 coro->flags = CF_NEW; 2722 coro->flags = CF_NEW;
1183 2723
2724 if (coro_first) coro_first->prev = coro;
2725 coro->next = coro_first;
2726 coro_first = coro;
2727
1184 hv = newHV (); 2728 coro->hv = hv = newHV ();
1185 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2729 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2730 mg->mg_flags |= MGf_DUP;
1186 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2731 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1187 2732
2733 if (items > 1)
2734 {
2735 av_extend (coro->args, items - 1 + ix - 1);
2736
2737 if (ix)
2738 {
2739 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2740 cb = cv_coro_run;
2741 }
2742
2743 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2744
1188 for (i = 1; i < items; i++) 2745 for (i = 2; i < items; i++)
1189 av_push (coro->args, newSVsv (ST (i))); 2746 av_push (coro->args, newSVsv (ST (i)));
2747 }
1190} 2748}
1191 OUTPUT: 2749 OUTPUT:
1192 RETVAL 2750 RETVAL
1193 2751
1194int 2752void
1195save (SV *coro, int new_save = -1) 2753transfer (...)
2754 PROTOTYPE: $$
1196 CODE: 2755 CODE:
1197 RETVAL = api_save (coro, new_save); 2756 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1198 OUTPUT:
1199 RETVAL
1200
1201void
1202_set_stacklevel (...)
1203 ALIAS:
1204 Coro::State::transfer = 1
1205 Coro::schedule = 2
1206 Coro::cede = 3
1207 Coro::cede_notself = 4
1208 CODE:
1209{
1210 struct transfer_args ta;
1211
1212 switch (ix)
1213 {
1214 case 0:
1215 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1216 ta.next = 0;
1217 break;
1218
1219 case 1:
1220 if (items != 2)
1221 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1222
1223 prepare_transfer (&ta, ST (0), ST (1));
1224 break;
1225
1226 case 2:
1227 prepare_schedule (&ta);
1228 break;
1229
1230 case 3:
1231 prepare_cede (&ta);
1232 break;
1233
1234 case 4:
1235 if (!prepare_cede_notself (&ta))
1236 XSRETURN_EMPTY;
1237
1238 break;
1239 }
1240
1241 BARRIER;
1242 TRANSFER (ta);
1243
1244 if (GIMME_V != G_VOID && ta.next != ta.prev)
1245 XSRETURN_YES;
1246}
1247 2757
1248bool 2758bool
1249_destroy (SV *coro_sv) 2759_destroy (SV *coro_sv)
1250 CODE: 2760 CODE:
1251 RETVAL = coro_state_destroy (SvSTATE (coro_sv)); 2761 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1252 OUTPUT: 2762 OUTPUT:
1253 RETVAL 2763 RETVAL
1254 2764
1255void 2765void
1256_exit (code) 2766_exit (int code)
1257 int code
1258 PROTOTYPE: $ 2767 PROTOTYPE: $
1259 CODE: 2768 CODE:
1260 _exit (code); 2769 _exit (code);
1261 2770
1262int 2771int
2772cctx_stacksize (int new_stacksize = 0)
2773 PROTOTYPE: ;$
2774 CODE:
2775 RETVAL = cctx_stacksize;
2776 if (new_stacksize)
2777 {
2778 cctx_stacksize = new_stacksize;
2779 ++cctx_gen;
2780 }
2781 OUTPUT:
2782 RETVAL
2783
2784int
2785cctx_max_idle (int max_idle = 0)
2786 PROTOTYPE: ;$
2787 CODE:
2788 RETVAL = cctx_max_idle;
2789 if (max_idle > 1)
2790 cctx_max_idle = max_idle;
2791 OUTPUT:
2792 RETVAL
2793
2794int
1263cctx_count () 2795cctx_count ()
2796 PROTOTYPE:
1264 CODE: 2797 CODE:
1265 RETVAL = cctx_count; 2798 RETVAL = cctx_count;
1266 OUTPUT: 2799 OUTPUT:
1267 RETVAL 2800 RETVAL
1268 2801
1269int 2802int
1270cctx_idle () 2803cctx_idle ()
2804 PROTOTYPE:
1271 CODE: 2805 CODE:
1272 RETVAL = cctx_idle; 2806 RETVAL = cctx_idle;
1273 OUTPUT: 2807 OUTPUT:
1274 RETVAL 2808 RETVAL
1275 2809
2810void
2811list ()
2812 PROTOTYPE:
2813 PPCODE:
2814{
2815 struct coro *coro;
2816 for (coro = coro_first; coro; coro = coro->next)
2817 if (coro->hv)
2818 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2819}
2820
2821void
2822call (Coro::State coro, SV *coderef)
2823 ALIAS:
2824 eval = 1
2825 CODE:
2826{
2827 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2828 {
2829 struct coro temp;
2830
2831 if (!(coro->flags & CF_RUNNING))
2832 {
2833 PUTBACK;
2834 save_perl (aTHX_ &temp);
2835 load_perl (aTHX_ coro);
2836 }
2837
2838 {
2839 dSP;
2840 ENTER;
2841 SAVETMPS;
2842 PUTBACK;
2843 PUSHSTACK;
2844 PUSHMARK (SP);
2845
2846 if (ix)
2847 eval_sv (coderef, 0);
2848 else
2849 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2850
2851 POPSTACK;
2852 SPAGAIN;
2853 FREETMPS;
2854 LEAVE;
2855 PUTBACK;
2856 }
2857
2858 if (!(coro->flags & CF_RUNNING))
2859 {
2860 save_perl (aTHX_ coro);
2861 load_perl (aTHX_ &temp);
2862 SPAGAIN;
2863 }
2864 }
2865}
2866
2867SV *
2868is_ready (Coro::State coro)
2869 PROTOTYPE: $
2870 ALIAS:
2871 is_ready = CF_READY
2872 is_running = CF_RUNNING
2873 is_new = CF_NEW
2874 is_destroyed = CF_DESTROYED
2875 CODE:
2876 RETVAL = boolSV (coro->flags & ix);
2877 OUTPUT:
2878 RETVAL
2879
2880void
2881throw (Coro::State self, SV *throw = &PL_sv_undef)
2882 PROTOTYPE: $;$
2883 CODE:
2884{
2885 struct coro *current = SvSTATE_current;
2886 SV **throwp = self == current ? &CORO_THROW : &self->except;
2887 SvREFCNT_dec (*throwp);
2888 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2889}
2890
2891void
2892api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2893 PROTOTYPE: $;$
2894 C_ARGS: aTHX_ coro, flags
2895
2896SV *
2897has_cctx (Coro::State coro)
2898 PROTOTYPE: $
2899 CODE:
2900 RETVAL = boolSV (!!coro->cctx);
2901 OUTPUT:
2902 RETVAL
2903
2904int
2905is_traced (Coro::State coro)
2906 PROTOTYPE: $
2907 CODE:
2908 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2909 OUTPUT:
2910 RETVAL
2911
2912UV
2913rss (Coro::State coro)
2914 PROTOTYPE: $
2915 ALIAS:
2916 usecount = 1
2917 CODE:
2918 switch (ix)
2919 {
2920 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2921 case 1: RETVAL = coro->usecount; break;
2922 }
2923 OUTPUT:
2924 RETVAL
2925
2926void
2927force_cctx ()
2928 PROTOTYPE:
2929 CODE:
2930 SvSTATE_current->cctx->idle_sp = 0;
2931
2932void
2933swap_defsv (Coro::State self)
2934 PROTOTYPE: $
2935 ALIAS:
2936 swap_defav = 1
2937 CODE:
2938 if (!self->slot)
2939 croak ("cannot swap state with coroutine that has no saved state,");
2940 else
2941 {
2942 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2943 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2944
2945 SV *tmp = *src; *src = *dst; *dst = tmp;
2946 }
2947
2948
1276MODULE = Coro::State PACKAGE = Coro 2949MODULE = Coro::State PACKAGE = Coro
1277 2950
1278BOOT: 2951BOOT:
1279{ 2952{
1280 int i; 2953 int i;
1281 2954
2955 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2956 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2957 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2958 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
2959 cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
2960 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);
2961 SvREADONLY_on (coro_current);
2962
2963 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2964 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2965 cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);
2966 cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);
2967
1282 coro_stash = gv_stashpv ("Coro", TRUE); 2968 coro_stash = gv_stashpv ("Coro", TRUE);
1283 2969
1284 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2970 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1285 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2971 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1286 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2972 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1287 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2973 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1288 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2974 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1289 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2975 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1290 2976
1291 coro_current = get_sv ("Coro::current", FALSE);
1292 SvREADONLY_on (coro_current);
1293
1294 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2977 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1295 coro_ready[i] = newAV (); 2978 coro_ready[i] = newAV ();
1296 2979
1297 { 2980 {
1298 SV *sv = perl_get_sv("Coro::API", 1); 2981 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1299 2982
1300 coroapi.schedule = api_schedule; 2983 coroapi.schedule = api_schedule;
1301 coroapi.save = api_save;
1302 coroapi.cede = api_cede; 2984 coroapi.cede = api_cede;
1303 coroapi.cede_notself = api_cede_notself; 2985 coroapi.cede_notself = api_cede_notself;
1304 coroapi.ready = api_ready; 2986 coroapi.ready = api_ready;
1305 coroapi.is_ready = api_is_ready; 2987 coroapi.is_ready = api_is_ready;
1306 coroapi.nready = &coro_nready; 2988 coroapi.nready = coro_nready;
1307 coroapi.current = coro_current; 2989 coroapi.current = coro_current;
1308 2990
1309 GCoroAPI = &coroapi; 2991 /*GCoroAPI = &coroapi;*/
1310 sv_setiv (sv, (IV)&coroapi); 2992 sv_setiv (sv, (IV)&coroapi);
1311 SvREADONLY_on (sv); 2993 SvREADONLY_on (sv);
1312 } 2994 }
1313} 2995}
2996
2997void
2998schedule (...)
2999 CODE:
3000 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3001
3002void
3003cede (...)
3004 CODE:
3005 CORO_EXECUTE_SLF_XS (slf_init_cede);
3006
3007void
3008cede_notself (...)
3009 CODE:
3010 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1314 3011
1315void 3012void
1316_set_current (SV *current) 3013_set_current (SV *current)
1317 PROTOTYPE: $ 3014 PROTOTYPE: $
1318 CODE: 3015 CODE:
1319 SvREFCNT_dec (SvRV (coro_current)); 3016 SvREFCNT_dec (SvRV (coro_current));
1320 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3017 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3018
3019void
3020_set_readyhook (SV *hook)
3021 PROTOTYPE: $
3022 CODE:
3023 SvREFCNT_dec (coro_readyhook);
3024 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1321 3025
1322int 3026int
1323prio (Coro::State coro, int newprio = 0) 3027prio (Coro::State coro, int newprio = 0)
3028 PROTOTYPE: $;$
1324 ALIAS: 3029 ALIAS:
1325 nice = 1 3030 nice = 1
1326 CODE: 3031 CODE:
1327{ 3032{
1328 RETVAL = coro->prio; 3033 RETVAL = coro->prio;
… …
1343 3048
1344SV * 3049SV *
1345ready (SV *self) 3050ready (SV *self)
1346 PROTOTYPE: $ 3051 PROTOTYPE: $
1347 CODE: 3052 CODE:
1348 RETVAL = boolSV (api_ready (self)); 3053 RETVAL = boolSV (api_ready (aTHX_ self));
1349 OUTPUT:
1350 RETVAL
1351
1352SV *
1353is_ready (SV *self)
1354 PROTOTYPE: $
1355 CODE:
1356 RETVAL = boolSV (api_is_ready (self));
1357 OUTPUT: 3054 OUTPUT:
1358 RETVAL 3055 RETVAL
1359 3056
1360int 3057int
1361nready (...) 3058nready (...)
… …
1363 CODE: 3060 CODE:
1364 RETVAL = coro_nready; 3061 RETVAL = coro_nready;
1365 OUTPUT: 3062 OUTPUT:
1366 RETVAL 3063 RETVAL
1367 3064
1368MODULE = Coro::State PACKAGE = Coro::AIO 3065void
3066_pool_handler (...)
3067 CODE:
3068 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3069
3070void
3071async_pool (SV *cv, ...)
3072 PROTOTYPE: &@
3073 PPCODE:
3074{
3075 HV *hv = (HV *)av_pop (av_async_pool);
3076 AV *av = newAV ();
3077 SV *cb = ST (0);
3078 int i;
3079
3080 av_extend (av, items - 2);
3081 for (i = 1; i < items; ++i)
3082 av_push (av, SvREFCNT_inc_NN (ST (i)));
3083
3084 if ((SV *)hv == &PL_sv_undef)
3085 {
3086 PUSHMARK (SP);
3087 EXTEND (SP, 2);
3088 PUSHs (sv_Coro);
3089 PUSHs ((SV *)cv_pool_handler);
3090 PUTBACK;
3091 call_sv ((SV *)cv_coro_new, G_SCALAR);
3092 SPAGAIN;
3093
3094 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3095 }
3096
3097 {
3098 struct coro *coro = SvSTATE_hv (hv);
3099
3100 assert (!coro->invoke_cb);
3101 assert (!coro->invoke_av);
3102 coro->invoke_cb = SvREFCNT_inc (cb);
3103 coro->invoke_av = av;
3104 }
3105
3106 api_ready (aTHX_ (SV *)hv);
3107
3108 if (GIMME_V != G_VOID)
3109 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3110 else
3111 SvREFCNT_dec (hv);
3112}
1369 3113
1370SV * 3114SV *
1371_get_state () 3115rouse_cb ()
3116 PROTOTYPE:
1372 CODE: 3117 CODE:
1373{ 3118 RETVAL = coro_new_rouse_cb (aTHX);
1374 struct io_state *data;
1375
1376 RETVAL = newSV (sizeof (struct io_state));
1377 data = (struct io_state *)SvPVX (RETVAL);
1378 SvCUR_set (RETVAL, sizeof (struct io_state));
1379 SvPOK_only (RETVAL);
1380
1381 data->errorno = errno;
1382 data->laststype = PL_laststype;
1383 data->laststatval = PL_laststatval;
1384 data->statcache = PL_statcache;
1385}
1386 OUTPUT: 3119 OUTPUT:
1387 RETVAL 3120 RETVAL
1388 3121
1389void 3122void
1390_set_state (char *data_) 3123rouse_wait (...)
1391 PROTOTYPE: $ 3124 PROTOTYPE: ;$
3125 PPCODE:
3126 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3127
3128
3129MODULE = Coro::State PACKAGE = PerlIO::cede
3130
3131BOOT:
3132 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3133
3134
3135MODULE = Coro::State PACKAGE = Coro::Semaphore
3136
3137SV *
3138new (SV *klass, SV *count = 0)
1392 CODE: 3139 CODE:
1393{ 3140 RETVAL = sv_bless (
1394 struct io_state *data = (void *)data_; 3141 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3142 GvSTASH (CvGV (cv))
3143 );
3144 OUTPUT:
3145 RETVAL
1395 3146
1396 errno = data->errorno; 3147# helper for Coro::Channel
1397 PL_laststype = data->laststype; 3148SV *
1398 PL_laststatval = data->laststatval; 3149_alloc (int count)
1399 PL_statcache = data->statcache; 3150 CODE:
1400} 3151 RETVAL = coro_waitarray_new (aTHX_ count);
3152 OUTPUT:
3153 RETVAL
1401 3154
3155SV *
3156count (SV *self)
3157 CODE:
3158 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3159 OUTPUT:
3160 RETVAL
3161
3162void
3163up (SV *self, int adjust = 1)
3164 ALIAS:
3165 adjust = 1
3166 CODE:
3167 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3168
3169void
3170down (...)
3171 CODE:
3172 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3173
3174void
3175wait (...)
3176 CODE:
3177 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3178
3179void
3180try (SV *self)
3181 PPCODE:
3182{
3183 AV *av = (AV *)SvRV (self);
3184 SV *count_sv = AvARRAY (av)[0];
3185 IV count = SvIVX (count_sv);
3186
3187 if (count > 0)
3188 {
3189 --count;
3190 SvIVX (count_sv) = count;
3191 XSRETURN_YES;
3192 }
3193 else
3194 XSRETURN_NO;
3195}
3196
3197void
3198waiters (SV *self)
3199 PPCODE:
3200{
3201 AV *av = (AV *)SvRV (self);
3202 int wcount = AvFILLp (av) + 1 - 1;
3203
3204 if (GIMME_V == G_SCALAR)
3205 XPUSHs (sv_2mortal (newSViv (wcount)));
3206 else
3207 {
3208 int i;
3209 EXTEND (SP, wcount);
3210 for (i = 1; i <= wcount; ++i)
3211 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3212 }
3213}
3214
3215MODULE = Coro::State PACKAGE = Coro::Signal
3216
3217SV *
3218new (SV *klass)
3219 CODE:
3220 RETVAL = sv_bless (
3221 coro_waitarray_new (aTHX_ 0),
3222 GvSTASH (CvGV (cv))
3223 );
3224 OUTPUT:
3225 RETVAL
3226
3227void
3228wait (...)
3229 CODE:
3230 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3231
3232void
3233broadcast (SV *self)
3234 CODE:
3235{
3236 AV *av = (AV *)SvRV (self);
3237 coro_signal_wake (aTHX_ av, AvFILLp (av));
3238}
3239
3240void
3241send (SV *self)
3242 CODE:
3243{
3244 AV *av = (AV *)SvRV (self);
3245
3246 if (AvFILLp (av))
3247 coro_signal_wake (aTHX_ av, 1);
3248 else
3249 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3250}
3251
3252IV
3253awaited (SV *self)
3254 CODE:
3255 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3256 OUTPUT:
3257 RETVAL
3258
3259
3260MODULE = Coro::State PACKAGE = Coro::AnyEvent
3261
3262BOOT:
3263 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3264
3265void
3266_schedule (...)
3267 CODE:
3268{
3269 static int incede;
3270
3271 api_cede_notself (aTHX);
3272
3273 ++incede;
3274 while (coro_nready >= incede && api_cede (aTHX))
3275 ;
3276
3277 sv_setsv (sv_activity, &PL_sv_undef);
3278 if (coro_nready >= incede)
3279 {
3280 PUSHMARK (SP);
3281 PUTBACK;
3282 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3283 }
3284
3285 --incede;
3286}
3287
3288
3289MODULE = Coro::State PACKAGE = Coro::AIO
3290
3291void
3292_register (char *target, char *proto, SV *req)
3293 CODE:
3294{
3295 CV *req_cv = coro_sv_2cv (aTHX_ req);
3296 /* newXSproto doesn't return the CV on 5.8 */
3297 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3298 sv_setpv ((SV *)slf_cv, proto);
3299 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3300}
3301

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