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Comparing Coro/Coro/State.xs (file contents):
Revision 1.200 by root, Sun Oct 7 15:08:23 2007 UTC vs.
Revision 1.282 by root, Sun Nov 16 10:33:08 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#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, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
15 25
16#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
17# include <unistd.h> 27# include <unistd.h>
18# include <sys/mman.h> 28# include <sys/mman.h>
19# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
36# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
37#endif 47#endif
38 48
39#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
40# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
41# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
42#else
43# define REGISTER_STACK(cctx,start,end)
44#endif 51#endif
45 52
46/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
47#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
48 55
49#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
50 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
51 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
52 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
71# ifndef IS_PADCONST 78# ifndef IS_PADCONST
72# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
73# endif 80# endif
74#endif 81#endif
75 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
76/* 5.8.7 */ 101/* 5.8.7 */
77#ifndef SvRV_set 102#ifndef SvRV_set
78# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
79#endif 104#endif
80 105
81/* 5.8.8 */
82#ifndef GV_NOTQUAL
83# define GV_NOTQUAL 0
84#endif
85#ifndef newSV
86# define newSV(l) NEWSV(0,l)
87#endif
88
89#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
90# undef CORO_STACKGUARD 107# undef CORO_STACKGUARD
91#endif 108#endif
92 109
93#ifndef CORO_STACKGUARD 110#ifndef CORO_STACKGUARD
… …
99# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
100#endif 117#endif
101 118
102/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
103 * portable way as possible. */ 120 * portable way as possible. */
104#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
105#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
106 126
107#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
108 128
109#if __GNUC__ >= 3 129#if __GNUC__ >= 3
110# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
111# define BARRIER __asm__ __volatile__ ("" : : : "memory")
112# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
113#else 133#else
114# define attribute(x) 134# define attribute(x)
115# define BARRIER
116# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
117#endif 137#endif
118 138
119#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
120#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
121 141
122#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
123 143
124#include "CoroAPI.h" 144#include "CoroAPI.h"
125 145
126#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
127static perl_mutex coro_mutex; 147# if CORO_PTHREAD
128# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
129# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
130#else
131# define LOCK (void)0
132# define UNLOCK (void)0
133#endif 149# endif
134 150#endif
135#define strpair(const) const, sizeof (const) - 1
136 151
137/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
138struct io_state 153struct io_state
139{ 154{
155 AV *res;
140 int errorno; 156 int errorno;
141 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
142 int laststatval; 158 int laststatval;
143 Stat_t statcache; 159 Stat_t statcache;
144}; 160};
145 161
162static double (*nvtime)(); /* so why doesn't it take void? */
163
164static U32 cctx_gen;
146static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
147static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
148static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
149static JMPENV *main_top_env; 168static JMPENV *main_top_env;
150static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
151static SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next;
152 172
153static GV *irsgv; /* $/ */ 173static GV *irsgv; /* $/ */
154static GV *stdoutgv; /* *STDOUT */ 174static GV *stdoutgv; /* *STDOUT */
155 175static SV *rv_diehook;
176static SV *rv_warnhook;
156static HV *hv_sig; /* %SIG */ 177static HV *hv_sig; /* %SIG */
157static SV *sv_diehook;
158static SV *sv_warnhook;
159 178
160/* async_pool helper stuff */ 179/* async_pool helper stuff */
161static SV *sv_pool_rss; 180static SV *sv_pool_rss;
162static SV *sv_pool_size; 181static SV *sv_pool_size;
163static AV *av_async_pool; 182static AV *av_async_pool;
183
184/* Coro::AnyEvent */
185static SV *sv_activity;
164 186
165static struct coro_cctx *cctx_first; 187static struct coro_cctx *cctx_first;
166static int cctx_count, cctx_idle; 188static int cctx_count, cctx_idle;
167 189
168enum { 190enum {
… …
173 CC_TRACE_LINE = 0x10, /* trace each statement */ 195 CC_TRACE_LINE = 0x10, /* trace each statement */
174 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 196 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
175}; 197};
176 198
177/* this is a structure representing a c-level coroutine */ 199/* this is a structure representing a c-level coroutine */
178typedef struct coro_cctx { 200typedef struct coro_cctx
201{
179 struct coro_cctx *next; 202 struct coro_cctx *next;
180 203
181 /* the stack */ 204 /* the stack */
182 void *sptr; 205 void *sptr;
183 size_t ssize; 206 size_t ssize;
… …
186 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
187 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
188 JMPENV *top_env; 211 JMPENV *top_env;
189 coro_context cctx; 212 coro_context cctx;
190 213
214 U32 gen;
191#if CORO_USE_VALGRIND 215#if CORO_USE_VALGRIND
192 int valgrind_id; 216 int valgrind_id;
193#endif 217#endif
194 unsigned char flags; 218 unsigned char flags;
195} coro_cctx; 219} coro_cctx;
… …
200 CF_NEW = 0x0004, /* has never been switched to */ 224 CF_NEW = 0x0004, /* has never been switched to */
201 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
202}; 226};
203 227
204/* the structure where most of the perl state is stored, overlaid on the cxstack */ 228/* the structure where most of the perl state is stored, overlaid on the cxstack */
205typedef struct { 229typedef struct
230{
206 SV *defsv; 231 SV *defsv;
207 AV *defav; 232 AV *defav;
208 SV *errsv; 233 SV *errsv;
209 SV *irsgv; 234 SV *irsgv;
210#define VAR(name,type) type name; 235#define VAR(name,type) type name;
… …
214 239
215#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
216 241
217/* this is a structure representing a perl-level coroutine */ 242/* this is a structure representing a perl-level coroutine */
218struct coro { 243struct coro {
219 /* the c coroutine allocated to this perl coroutine, if any */ 244 /* the C coroutine allocated to this perl coroutine, if any */
220 coro_cctx *cctx; 245 coro_cctx *cctx;
221 246
222 /* process data */ 247 /* process data */
248 struct CoroSLF slf_frame; /* saved slf frame */
223 AV *mainstack; 249 AV *mainstack;
224 perl_slots *slot; /* basically the saved sp */ 250 perl_slots *slot; /* basically the saved sp */
225 251
226 /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
227 AV *args; 253 int refcnt; /* coroutines are refcounted, yes */
228 int refcnt;
229 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
230 257
231 /* statistics */ 258 /* statistics */
232 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
233 260
234 /* coro process data */ 261 /* coro process data */
235 int prio; 262 int prio;
236 SV *throw; 263 SV *throw; /* exception to be thrown */
237 264
238 /* async_pool */ 265 /* async_pool */
239 SV *saved_deffh; 266 SV *saved_deffh;
240 267
241 /* linked list */ 268 /* linked list */
242 struct coro *next, *prev; 269 struct coro *next, *prev;
243 HV *hv; /* the perl hash associated with this coro, if any */
244}; 270};
245 271
246typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
247typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
274
275static struct CoroSLF slf_frame; /* the current slf frame */
248 276
249/** Coro ********************************************************************/ 277/** Coro ********************************************************************/
250 278
251#define PRIO_MAX 3 279#define PRIO_MAX 3
252#define PRIO_HIGH 1 280#define PRIO_HIGH 1
… …
255#define PRIO_IDLE -3 283#define PRIO_IDLE -3
256#define PRIO_MIN -4 284#define PRIO_MIN -4
257 285
258/* for Coro.pm */ 286/* for Coro.pm */
259static SV *coro_current; 287static SV *coro_current;
288static SV *coro_readyhook;
260static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
261static int coro_nready;
262static struct coro *coro_first; 290static struct coro *coro_first;
291#define coro_nready coroapi.nready
263 292
264/** lowlevel stuff **********************************************************/ 293/** lowlevel stuff **********************************************************/
265 294
266static SV * 295static SV *
267coro_get_sv (const char *name, int create) 296coro_get_sv (pTHX_ const char *name, int create)
268{ 297{
269#if PERL_VERSION_ATLEAST (5,9,0) 298#if PERL_VERSION_ATLEAST (5,10,0)
270 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 299 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
271 get_sv (name, create); 300 get_sv (name, create);
272#endif 301#endif
273 return get_sv (name, create); 302 return get_sv (name, create);
274} 303}
275 304
276static AV * 305static AV *
277coro_get_av (const char *name, int create) 306coro_get_av (pTHX_ const char *name, int create)
278{ 307{
279#if PERL_VERSION_ATLEAST (5,9,0) 308#if PERL_VERSION_ATLEAST (5,10,0)
280 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 309 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
281 get_av (name, create); 310 get_av (name, create);
282#endif 311#endif
283 return get_av (name, create); 312 return get_av (name, create);
284} 313}
285 314
286static HV * 315static HV *
287coro_get_hv (const char *name, int create) 316coro_get_hv (pTHX_ const char *name, int create)
288{ 317{
289#if PERL_VERSION_ATLEAST (5,9,0) 318#if PERL_VERSION_ATLEAST (5,10,0)
290 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
291 get_hv (name, create); 320 get_hv (name, create);
292#endif 321#endif
293 return get_hv (name, create); 322 return get_hv (name, create);
294} 323}
… …
299 AV *padlist = CvPADLIST (cv); 328 AV *padlist = CvPADLIST (cv);
300 AV *newpadlist, *newpad; 329 AV *newpadlist, *newpad;
301 330
302 newpadlist = newAV (); 331 newpadlist = newAV ();
303 AvREAL_off (newpadlist); 332 AvREAL_off (newpadlist);
304#if PERL_VERSION_ATLEAST (5,9,0) 333#if PERL_VERSION_ATLEAST (5,10,0)
305 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 334 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
306#else 335#else
307 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
308#endif 337#endif
309 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
310 --AvFILLp (padlist); 339 --AvFILLp (padlist);
311 340
312 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
313 av_store (newpadlist, 1, (SV *)newpad); 342 av_store (newpadlist, 1, (SV *)newpad);
314 343
315 return newpadlist; 344 return newpadlist;
316} 345}
317 346
… …
347 376
348 /* casting is fun. */ 377 /* casting is fun. */
349 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
350 free_padlist (aTHX_ padlist); 379 free_padlist (aTHX_ padlist);
351 380
352 SvREFCNT_dec (av); 381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
353 382
354 return 0; 383 return 0;
355} 384}
356 385
357#define PERL_MAGIC_coro PERL_MAGIC_ext 386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
358 388
359static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 389static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0,
391 coro_cv_free
392};
360 393
361#define CORO_MAGIC(cv) \ 394#define CORO_MAGIC(sv, type) \
362 SvMAGIC (cv) \ 395 expect_true (SvMAGIC (sv)) \
363 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 396 ? expect_true (SvMAGIC (sv)->mg_type == type) \
364 ? SvMAGIC (cv) \ 397 ? SvMAGIC (sv) \
365 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 398 : mg_find (sv, type) \
366 : 0 399 : 0
367 400
368static struct coro * 401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
369SvSTATE_ (pTHX_ SV *coro) 405SvSTATE_ (pTHX_ SV *coro)
370{ 406{
371 HV *stash; 407 HV *stash;
372 MAGIC *mg; 408 MAGIC *mg;
373 409
… …
383 /* very slow, but rare, check */ 419 /* very slow, but rare, check */
384 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
385 croak ("Coro::State object required"); 421 croak ("Coro::State object required");
386 } 422 }
387 423
388 mg = CORO_MAGIC (coro); 424 mg = CORO_MAGIC_state (coro);
389 return (struct coro *)mg->mg_ptr; 425 return (struct coro *)mg->mg_ptr;
390} 426}
391 427
392#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
393 429
430/* fastert than SvSTATE, but expects a coroutine hv */
431INLINE struct coro *
432SvSTATE_hv (SV *sv)
433{
434 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435 ? SvMAGIC (sv)
436 : mg_find (sv, CORO_MAGIC_type_state);
437
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442
394/* the next two functions merely cache the padlists */ 443/* the next two functions merely cache the padlists */
395static void 444static void
396get_padlist (pTHX_ CV *cv) 445get_padlist (pTHX_ CV *cv)
397{ 446{
398 MAGIC *mg = CORO_MAGIC (cv); 447 MAGIC *mg = CORO_MAGIC_cv (cv);
399 AV *av; 448 AV *av;
400 449
401 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 450 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
402 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 451 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
403 else 452 else
404 { 453 {
405#if CORO_PREFER_PERL_FUNCTIONS 454#if CORO_PREFER_PERL_FUNCTIONS
406 /* this is probably cleaner, but also slower? */ 455 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */
407 CV *cp = Perl_cv_clone (cv); 457 CV *cp = Perl_cv_clone (cv);
408 CvPADLIST (cv) = CvPADLIST (cp); 458 CvPADLIST (cv) = CvPADLIST (cp);
409 CvPADLIST (cp) = 0; 459 CvPADLIST (cp) = 0;
410 SvREFCNT_dec (cp); 460 SvREFCNT_dec (cp);
411#else 461#else
… …
415} 465}
416 466
417static void 467static void
418put_padlist (pTHX_ CV *cv) 468put_padlist (pTHX_ CV *cv)
419{ 469{
420 MAGIC *mg = CORO_MAGIC (cv); 470 MAGIC *mg = CORO_MAGIC_cv (cv);
421 AV *av; 471 AV *av;
422 472
423 if (expect_false (!mg)) 473 if (expect_false (!mg))
424 { 474 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
425 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
426 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
427 mg->mg_virtual = &vtbl_coro;
428 mg->mg_obj = (SV *)newAV ();
429 }
430 475
431 av = (AV *)mg->mg_obj; 476 av = (AV *)mg->mg_obj;
432 477
433 if (expect_false (AvFILLp (av) >= AvMAX (av))) 478 if (expect_false (AvFILLp (av) >= AvMAX (av)))
434 av_extend (av, AvMAX (av) + 1); 479 av_extend (av, AvMAX (av) + 1);
… …
468 CvPADLIST (cv) = (AV *)POPs; 513 CvPADLIST (cv) = (AV *)POPs;
469 } 514 }
470 515
471 PUTBACK; 516 PUTBACK;
472 } 517 }
518
519 slf_frame = c->slf_frame;
473} 520}
474 521
475static void 522static void
476save_perl (pTHX_ Coro__State c) 523save_perl (pTHX_ Coro__State c)
477{ 524{
525 c->slf_frame = slf_frame;
526
478 { 527 {
479 dSP; 528 dSP;
480 I32 cxix = cxstack_ix; 529 I32 cxix = cxstack_ix;
481 PERL_CONTEXT *ccstk = cxstack; 530 PERL_CONTEXT *ccstk = cxstack;
482 PERL_SI *top_si = PL_curstackinfo; 531 PERL_SI *top_si = PL_curstackinfo;
… …
500 549
501 if (expect_true (CvDEPTH (cv))) 550 if (expect_true (CvDEPTH (cv)))
502 { 551 {
503 EXTEND (SP, 3); 552 EXTEND (SP, 3);
504 PUSHs ((SV *)CvPADLIST (cv)); 553 PUSHs ((SV *)CvPADLIST (cv));
505 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 554 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
506 PUSHs ((SV *)cv); 555 PUSHs ((SV *)cv);
507 556
508 CvDEPTH (cv) = 0; 557 CvDEPTH (cv) = 0;
509 get_padlist (aTHX_ cv); 558 get_padlist (aTHX_ cv);
510 } 559 }
… …
521 570
522 PUTBACK; 571 PUTBACK;
523 } 572 }
524 573
525 /* allocate some space on the context stack for our purposes */ 574 /* allocate some space on the context stack for our purposes */
575 /* we manually unroll here, as usually 2 slots is enough */
576 if (SLOT_COUNT >= 1) CXINC;
577 if (SLOT_COUNT >= 2) CXINC;
578 if (SLOT_COUNT >= 3) CXINC;
526 { 579 {
527 /* we manually unroll here, as usually 2 slots is enough */
528 int i; 580 int i;
529 if (SLOT_COUNT >= 1) CXINC;
530 if (SLOT_COUNT >= 2) CXINC;
531 if (SLOT_COUNT >= 3) CXINC;
532 for (i = 3; i < SLOT_COUNT; ++i) 581 for (i = 3; i < SLOT_COUNT; ++i)
533 CXINC; 582 CXINC;
534
535 cxstack_ix -= SLOT_COUNT; /* undo allocation */
536 } 583 }
584 cxstack_ix -= SLOT_COUNT; /* undo allocation */
537 585
538 c->mainstack = PL_mainstack; 586 c->mainstack = PL_mainstack;
539 587
540 { 588 {
541 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 589 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
… …
550 #undef VAR 598 #undef VAR
551 } 599 }
552} 600}
553 601
554/* 602/*
555 * allocate various perl stacks. This is an exact copy 603 * allocate various perl stacks. This is almost an exact copy
556 * of perl.c:init_stacks, except that it uses less memory 604 * of perl.c:init_stacks, except that it uses less memory
557 * on the (sometimes correct) assumption that coroutines do 605 * on the (sometimes correct) assumption that coroutines do
558 * not usually need a lot of stackspace. 606 * not usually need a lot of stackspace.
559 */ 607 */
560#if CORO_PREFER_PERL_FUNCTIONS 608#if CORO_PREFER_PERL_FUNCTIONS
… …
591 639
592 New(54,PL_savestack,24,ANY); 640 New(54,PL_savestack,24,ANY);
593 PL_savestack_ix = 0; 641 PL_savestack_ix = 0;
594 PL_savestack_max = 24; 642 PL_savestack_max = 24;
595 643
596#if !PERL_VERSION_ATLEAST (5,9,0) 644#if !PERL_VERSION_ATLEAST (5,10,0)
597 New(54,PL_retstack,4,OP*); 645 New(54,PL_retstack,4,OP*);
598 PL_retstack_ix = 0; 646 PL_retstack_ix = 0;
599 PL_retstack_max = 4; 647 PL_retstack_max = 4;
600#endif 648#endif
601} 649}
… …
603 651
604/* 652/*
605 * destroy the stacks, the callchain etc... 653 * destroy the stacks, the callchain etc...
606 */ 654 */
607static void 655static void
608coro_destroy_stacks (pTHX) 656coro_destruct_stacks (pTHX)
609{ 657{
610 while (PL_curstackinfo->si_next) 658 while (PL_curstackinfo->si_next)
611 PL_curstackinfo = PL_curstackinfo->si_next; 659 PL_curstackinfo = PL_curstackinfo->si_next;
612 660
613 while (PL_curstackinfo) 661 while (PL_curstackinfo)
… …
624 672
625 Safefree (PL_tmps_stack); 673 Safefree (PL_tmps_stack);
626 Safefree (PL_markstack); 674 Safefree (PL_markstack);
627 Safefree (PL_scopestack); 675 Safefree (PL_scopestack);
628 Safefree (PL_savestack); 676 Safefree (PL_savestack);
629#if !PERL_VERSION_ATLEAST (5,9,0) 677#if !PERL_VERSION_ATLEAST (5,10,0)
630 Safefree (PL_retstack); 678 Safefree (PL_retstack);
631#endif 679#endif
632} 680}
633 681
634static size_t 682static size_t
… …
650 #undef VAR 698 #undef VAR
651 } 699 }
652 else 700 else
653 slot = coro->slot; 701 slot = coro->slot;
654 702
703 if (slot)
704 {
655 rss += sizeof (slot->curstackinfo); 705 rss += sizeof (slot->curstackinfo);
656 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
657 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
658 rss += slot->tmps_max * sizeof (SV *); 708 rss += slot->tmps_max * sizeof (SV *);
659 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 709 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
660 rss += slot->scopestack_max * sizeof (I32); 710 rss += slot->scopestack_max * sizeof (I32);
661 rss += slot->savestack_max * sizeof (ANY); 711 rss += slot->savestack_max * sizeof (ANY);
662 712
663#if !PERL_VERSION_ATLEAST (5,9,0) 713#if !PERL_VERSION_ATLEAST (5,10,0)
664 rss += slot->retstack_max * sizeof (OP *); 714 rss += slot->retstack_max * sizeof (OP *);
665#endif 715#endif
716 }
666 } 717 }
667 718
668 return rss; 719 return rss;
669} 720}
670 721
671/** coroutine stack handling ************************************************/ 722/** coroutine stack handling ************************************************/
723
724static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
725static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
726static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
727
728/* apparently < 5.8.8 */
729#ifndef MgPV_nolen_const
730#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
731 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
732 (const char*)(mg)->mg_ptr)
733#endif
734
735/*
736 * This overrides the default magic get method of %SIG elements.
737 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
738 * and instead of tryign to save and restore the hash elements, we just provide
739 * readback here.
740 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
741 * not expecting this to actually change the hook. This is a potential problem
742 * when a schedule happens then, but we ignore this.
743 */
744static int
745coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
746{
747 const char *s = MgPV_nolen_const (mg);
748
749 if (*s == '_')
750 {
751 SV **svp = 0;
752
753 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
754 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
755
756 if (svp)
757 {
758 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
759 return 0;
760 }
761 }
762
763 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
764}
765
766static int
767coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
768{
769 const char *s = MgPV_nolen_const (mg);
770
771 if (*s == '_')
772 {
773 SV **svp = 0;
774
775 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
776 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
777
778 if (svp)
779 {
780 SV *old = *svp;
781 *svp = 0;
782 SvREFCNT_dec (old);
783 return 0;
784 }
785 }
786
787 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
788}
789
790static int
791coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
792{
793 const char *s = MgPV_nolen_const (mg);
794
795 if (*s == '_')
796 {
797 SV **svp = 0;
798
799 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
800 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
801
802 if (svp)
803 {
804 SV *old = *svp;
805 *svp = newSVsv (sv);
806 SvREFCNT_dec (old);
807 return 0;
808 }
809 }
810
811 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
812}
813
814static void
815prepare_nop (pTHX_ struct coro_transfer_args *ta)
816{
817 /* kind of mega-hacky, but works */
818 ta->next = ta->prev = (struct coro *)ta;
819}
820
821static int
822slf_check_nop (pTHX_ struct CoroSLF *frame)
823{
824 return 0;
825}
672 826
673static void 827static void
674coro_setup (pTHX_ struct coro *coro) 828coro_setup (pTHX_ struct coro *coro)
675{ 829{
676 /* 830 /*
… …
685 PL_curpm = 0; 839 PL_curpm = 0;
686 PL_curpad = 0; 840 PL_curpad = 0;
687 PL_localizing = 0; 841 PL_localizing = 0;
688 PL_dirty = 0; 842 PL_dirty = 0;
689 PL_restartop = 0; 843 PL_restartop = 0;
690 SvREFCNT_inc (PL_diehook ); hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); 844#if PERL_VERSION_ATLEAST (5,10,0)
691 SvREFCNT_inc (PL_warnhook); hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); 845 PL_parser = 0;
846#endif
847
848 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
692 851
693 GvSV (PL_defgv) = newSV (0); 852 GvSV (PL_defgv) = newSV (0);
694 GvAV (PL_defgv) = coro->args; coro->args = 0; 853 GvAV (PL_defgv) = coro->args; coro->args = 0;
695 GvSV (PL_errgv) = newSV (0); 854 GvSV (PL_errgv) = newSV (0);
696 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
697 PL_rs = newSVsv (GvSV (irsgv)); 856 PL_rs = newSVsv (GvSV (irsgv));
698 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
699 858
700 { 859 {
701 dSP; 860 dSP;
702 LOGOP myop; 861 UNOP myop;
703 862
704 Zero (&myop, 1, LOGOP); 863 Zero (&myop, 1, UNOP);
705 myop.op_next = Nullop; 864 myop.op_next = Nullop;
706 myop.op_flags = OPf_WANT_VOID; 865 myop.op_flags = OPf_WANT_VOID;
707 866
708 PUSHMARK (SP); 867 PUSHMARK (SP);
709 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
711 PL_op = (OP *)&myop; 870 PL_op = (OP *)&myop;
712 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
713 SPAGAIN; 872 SPAGAIN;
714 } 873 }
715 874
716 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ 875 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
717} 880}
718 881
719static void 882static void
720coro_destroy (pTHX_ struct coro *coro) 883coro_destruct (pTHX_ struct coro *coro)
721{ 884{
722 if (!IN_DESTRUCT) 885 if (!IN_DESTRUCT)
723 { 886 {
724 /* restore all saved variables and stuff */ 887 /* restore all saved variables and stuff */
725 LEAVE_SCOPE (0); 888 LEAVE_SCOPE (0);
… …
747 SvREFCNT_dec (PL_warnhook); 910 SvREFCNT_dec (PL_warnhook);
748 911
749 SvREFCNT_dec (coro->saved_deffh); 912 SvREFCNT_dec (coro->saved_deffh);
750 SvREFCNT_dec (coro->throw); 913 SvREFCNT_dec (coro->throw);
751 914
752 coro_destroy_stacks (aTHX); 915 coro_destruct_stacks (aTHX);
753} 916}
754 917
755static void 918INLINE void
756free_coro_mortal (pTHX) 919free_coro_mortal (pTHX)
757{ 920{
758 if (expect_true (coro_mortal)) 921 if (expect_true (coro_mortal))
759 { 922 {
760 SvREFCNT_dec (coro_mortal); 923 SvREFCNT_dec (coro_mortal);
… …
765static int 928static int
766runops_trace (pTHX) 929runops_trace (pTHX)
767{ 930{
768 COP *oldcop = 0; 931 COP *oldcop = 0;
769 int oldcxix = -2; 932 int oldcxix = -2;
770 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
771 coro_cctx *cctx = coro->cctx; 934 coro_cctx *cctx = coro->cctx;
772 935
773 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
774 { 937 {
775 PERL_ASYNC_CHECK (); 938 PERL_ASYNC_CHECK ();
… …
794 : cx->blk_gimme == G_SCALAR ? bot + 1 957 : cx->blk_gimme == G_SCALAR ? bot + 1
795 : bot; 958 : bot;
796 959
797 av_extend (av, top - bot); 960 av_extend (av, top - bot);
798 while (bot < top) 961 while (bot < top)
799 av_push (av, SvREFCNT_inc (*bot++)); 962 av_push (av, SvREFCNT_inc_NN (*bot++));
800 963
801 PL_runops = RUNOPS_DEFAULT; 964 PL_runops = RUNOPS_DEFAULT;
802 ENTER; 965 ENTER;
803 SAVETMPS; 966 SAVETMPS;
804 EXTEND (SP, 3); 967 EXTEND (SP, 3);
805 PUSHMARK (SP); 968 PUSHMARK (SP);
806 PUSHs (&PL_sv_no); 969 PUSHs (&PL_sv_no);
807 PUSHs (fullname); 970 PUSHs (fullname);
808 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 971 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
809 PUTBACK; 972 PUTBACK;
810 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 973 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
811 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 974 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
812 SPAGAIN; 975 SPAGAIN;
813 FREETMPS; 976 FREETMPS;
814 LEAVE; 977 LEAVE;
815 PL_runops = runops_trace; 978 PL_runops = runops_trace;
… …
842 SAVETMPS; 1005 SAVETMPS;
843 EXTEND (SP, 3); 1006 EXTEND (SP, 3);
844 PUSHMARK (SP); 1007 PUSHMARK (SP);
845 PUSHs (&PL_sv_yes); 1008 PUSHs (&PL_sv_yes);
846 PUSHs (fullname); 1009 PUSHs (fullname);
847 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
848 PUTBACK; 1011 PUTBACK;
849 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
850 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1013 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
851 SPAGAIN; 1014 SPAGAIN;
852 FREETMPS; 1015 FREETMPS;
853 LEAVE; 1016 LEAVE;
854 PL_runops = runops_trace; 1017 PL_runops = runops_trace;
… …
868 PL_runops = RUNOPS_DEFAULT; 1031 PL_runops = RUNOPS_DEFAULT;
869 PUSHMARK (SP); 1032 PUSHMARK (SP);
870 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1033 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
871 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1034 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
872 PUTBACK; 1035 PUTBACK;
873 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); 1036 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
874 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1037 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
875 SPAGAIN; 1038 SPAGAIN;
876 FREETMPS; 1039 FREETMPS;
877 LEAVE; 1040 LEAVE;
878 PL_runops = runops_trace; 1041 PL_runops = runops_trace;
… …
884 1047
885 TAINT_NOT; 1048 TAINT_NOT;
886 return 0; 1049 return 0;
887} 1050}
888 1051
1052static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1054{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0;
1057}
1058
889/* inject a fake call to Coro::State::_cctx_init into the execution */ 1059/* inject a fake call to Coro::State::_cctx_init into the execution */
890/* _cctx_init should be careful, as it could be called at almost any time */ 1060/* _cctx_init should be careful, as it could be called at almost any time */
891/* during execution of a perl program */ 1061/* during execution of a perl program */
1062/* also initialises PL_top_env */
892static void NOINLINE 1063static void NOINLINE
893prepare_cctx (pTHX_ coro_cctx *cctx) 1064cctx_prepare (pTHX_ coro_cctx *cctx)
894{ 1065{
895 dSP; 1066 dSP;
896 LOGOP myop; 1067 UNOP myop;
897 1068
898 PL_top_env = &PL_start_env; 1069 PL_top_env = &PL_start_env;
899 1070
900 if (cctx->flags & CC_TRACE) 1071 if (cctx->flags & CC_TRACE)
901 PL_runops = runops_trace; 1072 PL_runops = runops_trace;
902 1073
903 Zero (&myop, 1, LOGOP); 1074 Zero (&myop, 1, UNOP);
904 myop.op_next = PL_op; 1075 myop.op_next = PL_op;
905 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
906 1077
907 PUSHMARK (SP); 1078 PUSHMARK (SP);
908 EXTEND (SP, 2); 1079 EXTEND (SP, 2);
909 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1080 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
910 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
911 PUTBACK; 1082 PUTBACK;
912 PL_op = (OP *)&myop; 1083 PL_op = (OP *)&myop;
913 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
914 SPAGAIN; 1085 SPAGAIN;
915} 1086}
916 1087
1088/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void
1090transfer_tail (pTHX)
1091{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX);
1097
1098 if (expect_false (next->throw))
1099 {
1100 SV *exception = sv_2mortal (next->throw);
1101
1102 next->throw = 0;
1103 sv_setsv (ERRSV, exception);
1104 croak (0);
1105 }
1106}
1107
917/* 1108/*
918 * this is a _very_ stripped down perl interpreter ;) 1109 * this is a _very_ stripped down perl interpreter ;)
919 */ 1110 */
920static void 1111static void
921coro_run (void *arg) 1112cctx_run (void *arg)
922{ 1113{
1114#ifdef USE_ITHREADS
1115# if CORO_PTHREAD
1116 PERL_SET_CONTEXT (coro_thx);
1117# endif
1118#endif
1119 {
923 dTHX; 1120 dTHX;
924 1121
925 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1122 /* normally we would need to skip the entersub here */
926 UNLOCK; 1123 /* not doing so will re-execute it, which is exactly what we want */
927
928 /* we now skip the entersub that lead to transfer() */
929 PL_op = PL_op->op_next; 1124 /* PL_nop = PL_nop->op_next */
930 1125
931 /* inject a fake subroutine call to cctx_init */ 1126 /* inject a fake subroutine call to cctx_init */
932 prepare_cctx (aTHX_ (coro_cctx *)arg); 1127 cctx_prepare (aTHX_ (coro_cctx *)arg);
933 1128
1129 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX);
1132
934 /* somebody or something will hit me for both perl_run and PL_restartop */ 1133 /* somebody or something will hit me for both perl_run and PL_restartop */
935 PL_restartop = PL_op; 1134 PL_restartop = PL_op;
936 perl_run (PL_curinterp); 1135 perl_run (PL_curinterp);
937 1136
938 /* 1137 /*
939 * If perl-run returns we assume exit() was being called or the coro 1138 * If perl-run returns we assume exit() was being called or the coro
940 * fell off the end, which seems to be the only valid (non-bug) 1139 * fell off the end, which seems to be the only valid (non-bug)
941 * reason for perl_run to return. We try to exit by jumping to the 1140 * reason for perl_run to return. We try to exit by jumping to the
942 * bootstrap-time "top" top_env, as we cannot restore the "main" 1141 * bootstrap-time "top" top_env, as we cannot restore the "main"
943 * coroutine as Coro has no such concept 1142 * coroutine as Coro has no such concept
944 */ 1143 */
945 PL_top_env = main_top_env; 1144 PL_top_env = main_top_env;
946 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1145 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1146 }
947} 1147}
948 1148
949static coro_cctx * 1149static coro_cctx *
950cctx_new () 1150cctx_new ()
951{ 1151{
952 coro_cctx *cctx; 1152 coro_cctx *cctx;
1153
1154 ++cctx_count;
1155 New (0, cctx, 1, coro_cctx);
1156
1157 cctx->gen = cctx_gen;
1158 cctx->flags = 0;
1159 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1160
1161 return cctx;
1162}
1163
1164/* create a new cctx only suitable as source */
1165static coro_cctx *
1166cctx_new_empty ()
1167{
1168 coro_cctx *cctx = cctx_new ();
1169
1170 cctx->sptr = 0;
1171 coro_create (&cctx->cctx, 0, 0, 0, 0);
1172
1173 return cctx;
1174}
1175
1176/* create a new cctx suitable as destination/running a perl interpreter */
1177static coro_cctx *
1178cctx_new_run ()
1179{
1180 coro_cctx *cctx = cctx_new ();
953 void *stack_start; 1181 void *stack_start;
954 size_t stack_size; 1182 size_t stack_size;
955 1183
956 ++cctx_count;
957
958 Newz (0, cctx, 1, coro_cctx);
959
960#if HAVE_MMAP 1184#if HAVE_MMAP
961
962 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1185 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
963 /* mmap supposedly does allocate-on-write for us */ 1186 /* mmap supposedly does allocate-on-write for us */
964 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1187 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
965 1188
966 if (cctx->sptr != (void *)-1) 1189 if (cctx->sptr != (void *)-1)
967 { 1190 {
968# if CORO_STACKGUARD 1191 #if CORO_STACKGUARD
969 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1192 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
970# endif 1193 #endif
971 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1194 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
972 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1195 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
973 cctx->flags |= CC_MAPPED; 1196 cctx->flags |= CC_MAPPED;
974 } 1197 }
975 else 1198 else
976#endif 1199#endif
977 { 1200 {
978 cctx->ssize = coro_stacksize * (long)sizeof (long); 1201 cctx->ssize = cctx_stacksize * (long)sizeof (long);
979 New (0, cctx->sptr, coro_stacksize, long); 1202 New (0, cctx->sptr, cctx_stacksize, long);
980 1203
981 if (!cctx->sptr) 1204 if (!cctx->sptr)
982 { 1205 {
983 perror ("FATAL: unable to allocate stack for coroutine"); 1206 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
984 _exit (EXIT_FAILURE); 1207 _exit (EXIT_FAILURE);
985 } 1208 }
986 1209
987 stack_start = cctx->sptr; 1210 stack_start = cctx->sptr;
988 stack_size = cctx->ssize; 1211 stack_size = cctx->ssize;
989 } 1212 }
990 1213
991 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1214 #if CORO_USE_VALGRIND
1215 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1216 #endif
1217
992 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1218 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
993 1219
994 return cctx; 1220 return cctx;
995} 1221}
996 1222
997static void 1223static void
… …
999{ 1225{
1000 if (!cctx) 1226 if (!cctx)
1001 return; 1227 return;
1002 1228
1003 --cctx_count; 1229 --cctx_count;
1230 coro_destroy (&cctx->cctx);
1004 1231
1232 /* coro_transfer creates new, empty cctx's */
1233 if (cctx->sptr)
1234 {
1005#if CORO_USE_VALGRIND 1235 #if CORO_USE_VALGRIND
1006 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1236 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1007#endif 1237 #endif
1008 1238
1009#if HAVE_MMAP 1239#if HAVE_MMAP
1010 if (cctx->flags & CC_MAPPED) 1240 if (cctx->flags & CC_MAPPED)
1011 munmap (cctx->sptr, cctx->ssize); 1241 munmap (cctx->sptr, cctx->ssize);
1012 else 1242 else
1013#endif 1243#endif
1014 Safefree (cctx->sptr); 1244 Safefree (cctx->sptr);
1245 }
1015 1246
1016 Safefree (cctx); 1247 Safefree (cctx);
1017} 1248}
1018 1249
1019/* wether this cctx should be destructed */ 1250/* wether this cctx should be destructed */
1020#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1251#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1021 1252
1022static coro_cctx * 1253static coro_cctx *
1023cctx_get (pTHX) 1254cctx_get (pTHX)
1024{ 1255{
1025 while (expect_true (cctx_first)) 1256 while (expect_true (cctx_first))
… …
1032 return cctx; 1263 return cctx;
1033 1264
1034 cctx_destroy (cctx); 1265 cctx_destroy (cctx);
1035 } 1266 }
1036 1267
1037 return cctx_new (); 1268 return cctx_new_run ();
1038} 1269}
1039 1270
1040static void 1271static void
1041cctx_put (coro_cctx *cctx) 1272cctx_put (coro_cctx *cctx)
1042{ 1273{
1274 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1275
1043 /* free another cctx if overlimit */ 1276 /* free another cctx if overlimit */
1044 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1277 if (expect_false (cctx_idle >= cctx_max_idle))
1045 { 1278 {
1046 coro_cctx *first = cctx_first; 1279 coro_cctx *first = cctx_first;
1047 cctx_first = first->next; 1280 cctx_first = first->next;
1048 --cctx_idle; 1281 --cctx_idle;
1049 1282
… …
1061transfer_check (pTHX_ struct coro *prev, struct coro *next) 1294transfer_check (pTHX_ struct coro *prev, struct coro *next)
1062{ 1295{
1063 if (expect_true (prev != next)) 1296 if (expect_true (prev != next))
1064 { 1297 {
1065 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1066 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1299 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1067 1300
1068 if (expect_false (next->flags & CF_RUNNING)) 1301 if (expect_false (next->flags & CF_RUNNING))
1069 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1302 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1070 1303
1071 if (expect_false (next->flags & CF_DESTROYED)) 1304 if (expect_false (next->flags & CF_DESTROYED))
1072 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1305 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1073 1306
1074 if (
1075#if PERL_VERSION_ATLEAST (5,9,0) 1307#if !PERL_VERSION_ATLEAST (5,10,0)
1076 expect_false (PL_parser)
1077#else
1078 expect_false (PL_lex_state != LEX_NOTPARSING) 1308 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1079#endif
1080 )
1081 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1309 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1310#endif
1082 } 1311 }
1083} 1312}
1084 1313
1085/* always use the TRANSFER macro */ 1314/* always use the TRANSFER macro */
1086static void NOINLINE 1315static void NOINLINE
1087transfer (pTHX_ struct coro *prev, struct coro *next) 1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1088{ 1317{
1089 dSTACKLEVEL; 1318 dSTACKLEVEL;
1090 1319
1091 /* sometimes transfer is only called to set idle_sp */ 1320 /* sometimes transfer is only called to set idle_sp */
1092 if (expect_false (!next)) 1321 if (expect_false (!next))
1093 { 1322 {
1094 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1095 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1324 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1096 } 1325 }
1097 else if (expect_true (prev != next)) 1326 else if (expect_true (prev != next))
1098 { 1327 {
1099 coro_cctx *prev__cctx; 1328 coro_cctx *prev__cctx;
1100 1329
1101 if (expect_false (prev->flags & CF_NEW)) 1330 if (expect_false (prev->flags & CF_NEW))
1102 { 1331 {
1103 /* create a new empty context */ 1332 /* create a new empty/source context */
1104 Newz (0, prev->cctx, 1, coro_cctx); 1333 prev->cctx = cctx_new_empty ();
1105 prev->flags &= ~CF_NEW; 1334 prev->flags &= ~CF_NEW;
1106 prev->flags |= CF_RUNNING; 1335 prev->flags |= CF_RUNNING;
1107 } 1336 }
1108 1337
1109 prev->flags &= ~CF_RUNNING; 1338 prev->flags &= ~CF_RUNNING;
1110 next->flags |= CF_RUNNING; 1339 next->flags |= CF_RUNNING;
1111 1340
1112 LOCK; 1341 /* first get rid of the old state */
1342 save_perl (aTHX_ prev);
1113 1343
1114 if (expect_false (next->flags & CF_NEW)) 1344 if (expect_false (next->flags & CF_NEW))
1115 { 1345 {
1116 /* need to start coroutine */ 1346 /* need to start coroutine */
1117 next->flags &= ~CF_NEW; 1347 next->flags &= ~CF_NEW;
1118 /* first get rid of the old state */
1119 save_perl (aTHX_ prev);
1120 /* setup coroutine call */ 1348 /* setup coroutine call */
1121 coro_setup (aTHX_ next); 1349 coro_setup (aTHX_ next);
1122 } 1350 }
1123 else 1351 else
1352 load_perl (aTHX_ next);
1353
1354 prev__cctx = prev->cctx;
1355
1356 /* possibly untie and reuse the cctx */
1357 if (expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel
1359 && !(prev__cctx->flags & CC_TRACE)
1360 && !force_cctx
1361 ))
1124 { 1362 {
1125 /* coroutine already started */
1126 save_perl (aTHX_ prev);
1127 load_perl (aTHX_ next);
1128 }
1129
1130 prev__cctx = prev->cctx;
1131
1132 /* possibly "free" the cctx */
1133 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
1134 {
1135 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1363 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1136 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1364 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1137 1365
1138 prev->cctx = 0; 1366 prev->cctx = 0;
1139 1367
1140 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1368 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1141 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1369 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1142 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1370 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1371 if (!next->cctx)
1143 next->cctx = cctx_get (aTHX); 1372 next->cctx = cctx_get (aTHX);
1144 1373
1145 cctx_put (prev__cctx); 1374 cctx_put (prev__cctx);
1146 } 1375 }
1147 1376
1148 ++next->usecount; 1377 ++next->usecount;
1149 1378
1150 if (expect_true (!next->cctx)) 1379 if (expect_true (!next->cctx))
1151 next->cctx = cctx_get (aTHX); 1380 next->cctx = cctx_get (aTHX);
1381
1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1383 transfer_next = next;
1152 1384
1153 if (expect_false (prev__cctx != next->cctx)) 1385 if (expect_false (prev__cctx != next->cctx))
1154 { 1386 {
1155 prev__cctx->top_env = PL_top_env; 1387 prev__cctx->top_env = PL_top_env;
1156 PL_top_env = next->cctx->top_env; 1388 PL_top_env = next->cctx->top_env;
1157 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1158 } 1390 }
1159 1391
1160 free_coro_mortal (aTHX); 1392 transfer_tail (aTHX);
1161 UNLOCK;
1162
1163 if (expect_false (prev->throw || next->throw))
1164 {
1165 struct coro *coro = SvSTATE (coro_current);
1166
1167 if (coro->throw)
1168 {
1169 SV *exception = coro->throw;
1170 coro->throw = 0;
1171 sv_setsv (ERRSV, exception);
1172 croak (0);
1173 }
1174 }
1175 } 1393 }
1176} 1394}
1177 1395
1178struct transfer_args
1179{
1180 struct coro *prev, *next;
1181};
1182
1183#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1184#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1185 1398
1186/** high level stuff ********************************************************/ 1399/** high level stuff ********************************************************/
1187 1400
1188static int 1401static int
1189coro_state_destroy (pTHX_ struct coro *coro) 1402coro_state_destroy (pTHX_ struct coro *coro)
1190{ 1403{
1191 if (coro->flags & CF_DESTROYED) 1404 if (coro->flags & CF_DESTROYED)
1192 return 0; 1405 return 0;
1406
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro);
1193 1409
1194 coro->flags |= CF_DESTROYED; 1410 coro->flags |= CF_DESTROYED;
1195 1411
1196 if (coro->flags & CF_READY) 1412 if (coro->flags & CF_READY)
1197 { 1413 {
1198 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1414 /* reduce nready, as destroying a ready coro effectively unreadies it */
1199 /* alternative: look through all ready queues and remove the coro */ 1415 /* alternative: look through all ready queues and remove the coro */
1200 LOCK;
1201 --coro_nready; 1416 --coro_nready;
1202 UNLOCK;
1203 } 1417 }
1204 else 1418 else
1205 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1206 1420
1207 if (coro->mainstack && coro->mainstack != main_mainstack) 1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1208 { 1422 {
1209 struct coro temp; 1423 struct coro temp;
1210 1424
1211 if (coro->flags & CF_RUNNING) 1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1212 croak ("FATAL: tried to destroy currently running coroutine");
1213 1426
1214 save_perl (aTHX_ &temp); 1427 save_perl (aTHX_ &temp);
1215 load_perl (aTHX_ coro); 1428 load_perl (aTHX_ coro);
1216 1429
1217 coro_destroy (aTHX_ coro); 1430 coro_destruct (aTHX_ coro);
1218 1431
1219 load_perl (aTHX_ &temp); 1432 load_perl (aTHX_ &temp);
1220 1433
1221 coro->slot = 0; 1434 coro->slot = 0;
1222 } 1435 }
… …
1268# define MGf_DUP 0 1481# define MGf_DUP 0
1269#endif 1482#endif
1270}; 1483};
1271 1484
1272static void 1485static void
1273prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1486prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1274{ 1487{
1275 ta->prev = SvSTATE (prev_sv); 1488 ta->prev = SvSTATE (prev_sv);
1276 ta->next = SvSTATE (next_sv); 1489 ta->next = SvSTATE (next_sv);
1277 TRANSFER_CHECK (*ta); 1490 TRANSFER_CHECK (*ta);
1278} 1491}
1279 1492
1280static void 1493static void
1281api_transfer (SV *prev_sv, SV *next_sv) 1494api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1282{ 1495{
1283 dTHX;
1284 struct transfer_args ta; 1496 struct coro_transfer_args ta;
1285 1497
1286 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1287 TRANSFER (ta); 1499 TRANSFER (ta, 1);
1288} 1500}
1289 1501
1290/** Coro ********************************************************************/ 1502/** Coro ********************************************************************/
1291 1503
1292static void 1504INLINE void
1293coro_enq (pTHX_ SV *coro_sv) 1505coro_enq (pTHX_ struct coro *coro)
1294{ 1506{
1295 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1296} 1508}
1297 1509
1298static SV * 1510INLINE SV *
1299coro_deq (pTHX_ int min_prio) 1511coro_deq (pTHX)
1300{ 1512{
1301 int prio = PRIO_MAX - PRIO_MIN; 1513 int prio;
1302 1514
1303 min_prio -= PRIO_MIN;
1304 if (min_prio < 0)
1305 min_prio = 0;
1306
1307 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1308 if (AvFILLp (coro_ready [prio]) >= 0) 1516 if (AvFILLp (coro_ready [prio]) >= 0)
1309 return av_shift (coro_ready [prio]); 1517 return av_shift (coro_ready [prio]);
1310 1518
1311 return 0; 1519 return 0;
1312} 1520}
1313 1521
1314static int 1522static int
1315api_ready (SV *coro_sv) 1523api_ready (pTHX_ SV *coro_sv)
1316{ 1524{
1317 dTHX;
1318 struct coro *coro; 1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1319 1528
1320 if (SvROK (coro_sv)) 1529 if (SvROK (coro_sv))
1321 coro_sv = SvRV (coro_sv); 1530 coro_sv = SvRV (coro_sv);
1322 1531
1323 coro = SvSTATE (coro_sv); 1532 coro = SvSTATE (coro_sv);
… …
1325 if (coro->flags & CF_READY) 1534 if (coro->flags & CF_READY)
1326 return 0; 1535 return 0;
1327 1536
1328 coro->flags |= CF_READY; 1537 coro->flags |= CF_READY;
1329 1538
1330 LOCK; 1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1331 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro);
1332 ++coro_nready; 1543 ++coro_nready;
1333 UNLOCK; 1544
1545 if (sv_hook)
1546 {
1547 dSP;
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD);
1555 SPAGAIN;
1556
1557 FREETMPS;
1558 LEAVE;
1559 }
1560
1561 if (xs_hook)
1562 xs_hook ();
1334 1563
1335 return 1; 1564 return 1;
1336} 1565}
1337 1566
1338static int 1567static int
1339api_is_ready (SV *coro_sv) 1568api_is_ready (pTHX_ SV *coro_sv)
1340{ 1569{
1341 dTHX;
1342 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1570 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1343} 1571}
1344 1572
1345static void 1573INLINE void
1346prepare_schedule (pTHX_ struct transfer_args *ta) 1574prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1347{ 1575{
1348 SV *prev_sv, *next_sv; 1576 SV *prev_sv, *next_sv;
1349 1577
1350 for (;;) 1578 for (;;)
1351 { 1579 {
1352 LOCK;
1353 next_sv = coro_deq (aTHX_ PRIO_MIN); 1580 next_sv = coro_deq (aTHX);
1354 1581
1355 /* nothing to schedule: call the idle handler */ 1582 /* nothing to schedule: call the idle handler */
1356 if (expect_false (!next_sv)) 1583 if (expect_false (!next_sv))
1357 { 1584 {
1358 dSP; 1585 dSP;
1359 UNLOCK;
1360 1586
1361 ENTER; 1587 ENTER;
1362 SAVETMPS; 1588 SAVETMPS;
1363 1589
1364 PUSHMARK (SP); 1590 PUSHMARK (SP);
1365 PUTBACK; 1591 PUTBACK;
1366 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1592 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1593 SPAGAIN;
1367 1594
1368 FREETMPS; 1595 FREETMPS;
1369 LEAVE; 1596 LEAVE;
1370 continue; 1597 continue;
1371 } 1598 }
1372 1599
1373 ta->next = SvSTATE (next_sv); 1600 ta->next = SvSTATE_hv (next_sv);
1374 1601
1375 /* cannot transfer to destroyed coros, skip and look for next */ 1602 /* cannot transfer to destroyed coros, skip and look for next */
1376 if (expect_false (ta->next->flags & CF_DESTROYED)) 1603 if (expect_false (ta->next->flags & CF_DESTROYED))
1377 { 1604 {
1378 UNLOCK;
1379 SvREFCNT_dec (next_sv); 1605 SvREFCNT_dec (next_sv);
1380 /* coro_nready is already taken care of by destroy */ 1606 /* coro_nready has already been taken care of by destroy */
1381 continue; 1607 continue;
1382 } 1608 }
1383 1609
1384 --coro_nready; 1610 --coro_nready;
1385 UNLOCK;
1386 break; 1611 break;
1387 } 1612 }
1388 1613
1389 /* free this only after the transfer */ 1614 /* free this only after the transfer */
1390 prev_sv = SvRV (coro_current); 1615 prev_sv = SvRV (coro_current);
1391 ta->prev = SvSTATE (prev_sv); 1616 ta->prev = SvSTATE_hv (prev_sv);
1392 TRANSFER_CHECK (*ta); 1617 TRANSFER_CHECK (*ta);
1393 assert (ta->next->flags & CF_READY); 1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1394 ta->next->flags &= ~CF_READY; 1619 ta->next->flags &= ~CF_READY;
1395 SvRV_set (coro_current, next_sv); 1620 SvRV_set (coro_current, next_sv);
1396 1621
1397 LOCK;
1398 free_coro_mortal (aTHX); 1622 free_coro_mortal (aTHX);
1399 coro_mortal = prev_sv; 1623 coro_mortal = prev_sv;
1400 UNLOCK;
1401} 1624}
1402 1625
1403static void 1626INLINE void
1404prepare_cede (pTHX_ struct transfer_args *ta) 1627prepare_cede (pTHX_ struct coro_transfer_args *ta)
1405{ 1628{
1406 api_ready (coro_current); 1629 api_ready (aTHX_ coro_current);
1407 prepare_schedule (aTHX_ ta); 1630 prepare_schedule (aTHX_ ta);
1408} 1631}
1409 1632
1633INLINE void
1634prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1635{
1636 SV *prev = SvRV (coro_current);
1637
1638 if (coro_nready)
1639 {
1640 prepare_schedule (aTHX_ ta);
1641 api_ready (aTHX_ prev);
1642 }
1643 else
1644 prepare_nop (aTHX_ ta);
1645}
1646
1647static void
1648api_schedule (pTHX)
1649{
1650 struct coro_transfer_args ta;
1651
1652 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1);
1654}
1655
1410static int 1656static int
1411prepare_cede_notself (pTHX_ struct transfer_args *ta) 1657api_cede (pTHX)
1412{ 1658{
1413 if (coro_nready) 1659 struct coro_transfer_args ta;
1414 { 1660
1415 SV *prev = SvRV (coro_current);
1416 prepare_schedule (aTHX_ ta); 1661 prepare_cede (aTHX_ &ta);
1417 api_ready (prev); 1662
1663 if (expect_true (ta.prev != ta.next))
1664 {
1665 TRANSFER (ta, 1);
1418 return 1; 1666 return 1;
1419 } 1667 }
1420 else 1668 else
1421 return 0; 1669 return 0;
1422} 1670}
1423 1671
1424static void
1425api_schedule (void)
1426{
1427 dTHX;
1428 struct transfer_args ta;
1429
1430 prepare_schedule (aTHX_ &ta);
1431 TRANSFER (ta);
1432}
1433
1434static int 1672static int
1435api_cede (void) 1673api_cede_notself (pTHX)
1436{ 1674{
1437 dTHX; 1675 if (coro_nready)
1676 {
1438 struct transfer_args ta; 1677 struct coro_transfer_args ta;
1439 1678
1440 prepare_cede (aTHX_ &ta); 1679 prepare_cede_notself (aTHX_ &ta);
1441
1442 if (expect_true (ta.prev != ta.next))
1443 {
1444 TRANSFER (ta); 1680 TRANSFER (ta, 1);
1445 return 1; 1681 return 1;
1446 } 1682 }
1447 else 1683 else
1448 return 0; 1684 return 0;
1449} 1685}
1450 1686
1451static int 1687static void
1452api_cede_notself (void)
1453{
1454 dTHX;
1455 struct transfer_args ta;
1456
1457 if (prepare_cede_notself (aTHX_ &ta))
1458 {
1459 TRANSFER (ta);
1460 return 1;
1461 }
1462 else
1463 return 0;
1464}
1465
1466static void
1467api_trace (SV *coro_sv, int flags) 1688api_trace (pTHX_ SV *coro_sv, int flags)
1468{ 1689{
1469 dTHX;
1470 struct coro *coro = SvSTATE (coro_sv); 1690 struct coro *coro = SvSTATE (coro_sv);
1471 1691
1472 if (flags & CC_TRACE) 1692 if (flags & CC_TRACE)
1473 { 1693 {
1474 if (!coro->cctx) 1694 if (!coro->cctx)
1475 coro->cctx = cctx_new (); 1695 coro->cctx = cctx_new_run ();
1476 else if (!(coro->cctx->flags & CC_TRACE)) 1696 else if (!(coro->cctx->flags & CC_TRACE))
1477 croak ("cannot enable tracing on coroutine with custom stack"); 1697 croak ("cannot enable tracing on coroutine with custom stack,");
1478 1698
1479 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1480 } 1700 }
1481 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1482 { 1702 {
… …
1487 else 1707 else
1488 coro->slot->runops = RUNOPS_DEFAULT; 1708 coro->slot->runops = RUNOPS_DEFAULT;
1489 } 1709 }
1490} 1710}
1491 1711
1712/*****************************************************************************/
1713/* PerlIO::cede */
1714
1715typedef struct
1716{
1717 PerlIOBuf base;
1718 NV next, every;
1719} PerlIOCede;
1720
1721static IV
1722PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1723{
1724 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1725
1726 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1727 self->next = nvtime () + self->every;
1728
1729 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1730}
1731
1732static SV *
1733PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1734{
1735 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1736
1737 return newSVnv (self->every);
1738}
1739
1740static IV
1741PerlIOCede_flush (pTHX_ PerlIO *f)
1742{
1743 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1744 double now = nvtime ();
1745
1746 if (now >= self->next)
1747 {
1748 api_cede (aTHX);
1749 self->next = now + self->every;
1750 }
1751
1752 return PerlIOBuf_flush (aTHX_ f);
1753}
1754
1755static PerlIO_funcs PerlIO_cede =
1756{
1757 sizeof(PerlIO_funcs),
1758 "cede",
1759 sizeof(PerlIOCede),
1760 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1761 PerlIOCede_pushed,
1762 PerlIOBuf_popped,
1763 PerlIOBuf_open,
1764 PerlIOBase_binmode,
1765 PerlIOCede_getarg,
1766 PerlIOBase_fileno,
1767 PerlIOBuf_dup,
1768 PerlIOBuf_read,
1769 PerlIOBuf_unread,
1770 PerlIOBuf_write,
1771 PerlIOBuf_seek,
1772 PerlIOBuf_tell,
1773 PerlIOBuf_close,
1774 PerlIOCede_flush,
1775 PerlIOBuf_fill,
1776 PerlIOBase_eof,
1777 PerlIOBase_error,
1778 PerlIOBase_clearerr,
1779 PerlIOBase_setlinebuf,
1780 PerlIOBuf_get_base,
1781 PerlIOBuf_bufsiz,
1782 PerlIOBuf_get_ptr,
1783 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt,
1785};
1786
1787/*****************************************************************************/
1788
1789static const CV *slf_cv; /* for quick consistency check */
1790
1791static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1792static SV *slf_arg0;
1793static SV *slf_arg1;
1794static SV *slf_arg2;
1795
1796/* this restores the stack in the case we patched the entersub, to */
1797/* recreate the stack frame as perl will on following calls */
1798/* since entersub cleared the stack */
1799static OP *
1800pp_restore (pTHX)
1801{
1802 dSP;
1803
1804 PUSHMARK (SP);
1805
1806 EXTEND (SP, 3);
1807 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1808 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1809 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1810 PUSHs ((SV *)CvGV (slf_cv));
1811
1812 RETURNOP (slf_restore.op_first);
1813}
1814
1815static void
1816slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817{
1818 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819}
1820
1821static void
1822slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823{
1824 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826 frame->prepare = slf_prepare_set_stacklevel;
1827 frame->check = slf_check_nop;
1828 frame->data = (void *)SvIV (arg [0]);
1829}
1830
1831static void
1832slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833{
1834 SV **arg = (SV **)slf_frame.data;
1835
1836 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837}
1838
1839static void
1840slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 if (items != 2)
1843 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845 frame->prepare = slf_prepare_transfer;
1846 frame->check = slf_check_nop;
1847 frame->data = (void *)arg; /* let's hope it will stay valid */
1848}
1849
1850static void
1851slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede;
1861 frame->check = slf_check_nop;
1862}
1863
1864static void
1865slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 frame->prepare = prepare_cede_notself;
1868 frame->check = slf_check_nop;
1869}
1870
1871/* we hijack an hopefully unused CV flag for our purposes */
1872#define CVf_SLF 0x4000
1873
1874/*
1875 * these not obviously related functions are all rolled into one
1876 * function to increase chances that they all will call transfer with the same
1877 * stack offset
1878 * SLF stands for "schedule-like-function".
1879 */
1880static OP *
1881pp_slf (pTHX)
1882{
1883 I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885 /* set up the slf frame, unless it has already been set-up */
1886 /* the latter happens when a new coro has been started */
1887 /* or when a new cctx was attached to an existing coroutine */
1888 if (expect_true (!slf_frame.prepare))
1889 {
1890 /* first iteration */
1891 dSP;
1892 SV **arg = PL_stack_base + TOPMARK + 1;
1893 int items = SP - arg; /* args without function object */
1894 SV *gv = *sp;
1895
1896 /* do a quick consistency check on the "function" object, and if it isn't */
1897 /* for us, divert to the real entersub */
1898 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899 return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901 /* pop args */
1902 SP = PL_stack_base + POPMARK;
1903
1904 if (!(PL_op->op_flags & OPf_STACKED))
1905 {
1906 /* ampersand-form of call, use @_ instead of stack */
1907 AV *av = GvAV (PL_defgv);
1908 arg = AvARRAY (av);
1909 items = AvFILLp (av) + 1;
1910 }
1911
1912 PUTBACK;
1913
1914 /* now call the init function, which needs to set up slf_frame */
1915 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1917 }
1918
1919 /* now that we have a slf_frame, interpret it! */
1920 /* we use a callback system not to make the code needlessly */
1921 /* complicated, but so we can run multiple perl coros from one cctx */
1922
1923 do
1924 {
1925 struct coro_transfer_args ta;
1926
1927 slf_frame.prepare (aTHX_ &ta);
1928 TRANSFER (ta, 0);
1929
1930 checkmark = PL_stack_sp - PL_stack_base;
1931 }
1932 while (slf_frame.check (aTHX_ &slf_frame));
1933
1934 {
1935 dSP;
1936 SV **bot = PL_stack_base + checkmark;
1937 int gimme = GIMME_V;
1938
1939 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941 /* make sure we put something on the stack in scalar context */
1942 if (gimme == G_SCALAR)
1943 {
1944 if (sp == bot)
1945 XPUSHs (&PL_sv_undef);
1946
1947 SP = bot + 1;
1948 }
1949
1950 PUTBACK;
1951 }
1952
1953 return NORMAL;
1954}
1955
1956static void
1957api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958{
1959 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962 && PL_op->op_ppaddr != pp_slf)
1963 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965 if (items > 3)
1966 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968 CvFLAGS (cv) |= CVf_SLF;
1969 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970 slf_cv = cv;
1971
1972 /* we patch the op, and then re-run the whole call */
1973 /* we have to put the same argument on the stack for this to work */
1974 /* and this will be done by pp_restore */
1975 slf_restore.op_next = (OP *)&slf_restore;
1976 slf_restore.op_type = OP_CUSTOM;
1977 slf_restore.op_ppaddr = pp_restore;
1978 slf_restore.op_first = PL_op;
1979
1980 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984 PL_op->op_ppaddr = pp_slf;
1985
1986 PL_op = (OP *)&slf_restore;
1987}
1988
1989/*****************************************************************************/
1990
1991static void
1992coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993{
1994 SV *count_sv = AvARRAY (av)[0];
1995 IV count = SvIVX (count_sv);
1996
1997 count += adjust;
1998 SvIVX (count_sv) = count;
1999
2000 /* now wake up as many waiters as are expected to lock */
2001 while (count > 0 && AvFILLp (av) > 0)
2002 {
2003 SV *cb;
2004
2005 /* swap first two elements so we can shift a waiter */
2006 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av);
2009
2010 if (SvOBJECT (cb))
2011 api_ready (aTHX_ cb);
2012 else
2013 croak ("callbacks not yet supported");
2014
2015 SvREFCNT_dec (cb);
2016
2017 --count;
2018 }
2019}
2020
2021static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2023{
2024 /* call $sem->adjust (0) to possibly wake up some other waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2026}
2027
2028static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2030{
2031 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0];
2033
2034 if (SvIVX (count_sv) > 0)
2035 {
2036 SvSTATE_current->on_destroy = 0;
2037 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2038 return 0;
2039 }
2040 else
2041 {
2042 int i;
2043 /* if we were woken up but can't down, we look through the whole */
2044 /* waiters list and only add us if we aren't in there already */
2045 /* this avoids some degenerate memory usage cases */
2046
2047 for (i = 1; i <= AvFILLp (av); ++i)
2048 if (AvARRAY (av)[i] == SvRV (coro_current))
2049 return 1;
2050
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2052 return 1;
2053 }
2054}
2055
2056static void
2057slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{
2059 AV *av = (AV *)SvRV (arg [0]);
2060
2061 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 {
2063 frame->data = (void *)av;
2064 frame->prepare = prepare_nop;
2065 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2066 }
2067 else
2068 {
2069 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2070
2071 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2072 frame->prepare = prepare_schedule;
2073
2074 /* to avoid race conditions when a woken-up coro gets terminated */
2075 /* we arrange for a temporary on_destroy that calls adjust (0) */
2076 assert (!SvSTATE_current->on_destroy);//D
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 }
2079
2080 frame->check = slf_check_semaphore_down;
2081
2082}
2083
2084/*****************************************************************************/
2085
2086#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2087
2088/* create a closure from XS, returns a code reference */
2089/* the arg can be accessed via GENSUB_ARG from the callback */
2090/* the callback must use dXSARGS/XSRETURN */
2091static SV *
2092gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2093{
2094 CV *cv = (CV *)NEWSV (0, 0);
2095
2096 sv_upgrade ((SV *)cv, SVt_PVCV);
2097
2098 CvANON_on (cv);
2099 CvISXSUB_on (cv);
2100 CvXSUB (cv) = xsub;
2101 GENSUB_ARG = arg;
2102
2103 return newRV_noinc ((SV *)cv);
2104}
2105
2106/*****************************************************************************/
2107
1492MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2108MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1493 2109
1494PROTOTYPES: DISABLE 2110PROTOTYPES: DISABLE
1495 2111
1496BOOT: 2112BOOT:
1497{ 2113{
1498#ifdef USE_ITHREADS 2114#ifdef USE_ITHREADS
1499 MUTEX_INIT (&coro_mutex); 2115# if CORO_PTHREAD
2116 coro_thx = PERL_GET_CONTEXT;
2117# endif
1500#endif 2118#endif
1501 BOOT_PAGESIZE; 2119 BOOT_PAGESIZE;
1502 2120
1503 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2121 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1504 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2122 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1505 2123
2124 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2125 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2126 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2127
1506 hv_sig = coro_get_hv ("SIG", TRUE); 2128 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1507 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 2129 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1508 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 2130 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1509
1510 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1511 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1512 2131
1513 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2132 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1514 2133
1515 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2134 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1516 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2135 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1521 main_top_env = PL_top_env; 2140 main_top_env = PL_top_env;
1522 2141
1523 while (main_top_env->je_prev) 2142 while (main_top_env->je_prev)
1524 main_top_env = main_top_env->je_prev; 2143 main_top_env = main_top_env->je_prev;
1525 2144
2145 {
2146 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2147
2148 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2149 hv_store_ent (PL_custom_op_names, slf,
2150 newSVpv ("coro_slf", 0), 0);
2151
2152 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2153 hv_store_ent (PL_custom_op_descs, slf,
2154 newSVpv ("coro schedule like function", 0), 0);
2155 }
2156
1526 coroapi.ver = CORO_API_VERSION; 2157 coroapi.ver = CORO_API_VERSION;
2158 coroapi.rev = CORO_API_REVISION;
2159
1527 coroapi.transfer = api_transfer; 2160 coroapi.transfer = api_transfer;
2161
2162 coroapi.sv_state = SvSTATE_;
2163 coroapi.execute_slf = api_execute_slf;
2164 coroapi.prepare_nop = prepare_nop;
2165 coroapi.prepare_schedule = prepare_schedule;
2166 coroapi.prepare_cede = prepare_cede;
2167 coroapi.prepare_cede_notself = prepare_cede_notself;
2168
2169 {
2170 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2171
2172 if (!svp) croak ("Time::HiRes is required");
2173 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2174
2175 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2176 }
1528 2177
1529 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2178 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1530} 2179}
1531 2180
1532SV * 2181SV *
1533new (char *klass, ...) 2182new (char *klass, ...)
1534 CODE: 2183 CODE:
1535{ 2184{
1536 struct coro *coro; 2185 struct coro *coro;
2186 MAGIC *mg;
1537 HV *hv; 2187 HV *hv;
1538 int i; 2188 int i;
1539 2189
1540 Newz (0, coro, 1, struct coro); 2190 Newz (0, coro, 1, struct coro);
1541 coro->args = newAV (); 2191 coro->args = newAV ();
… …
1544 if (coro_first) coro_first->prev = coro; 2194 if (coro_first) coro_first->prev = coro;
1545 coro->next = coro_first; 2195 coro->next = coro_first;
1546 coro_first = coro; 2196 coro_first = coro;
1547 2197
1548 coro->hv = hv = newHV (); 2198 coro->hv = hv = newHV ();
1549 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2199 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2200 mg->mg_flags |= MGf_DUP;
1550 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2201 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1551 2202
1552 av_extend (coro->args, items - 1); 2203 av_extend (coro->args, items - 1);
1553 for (i = 1; i < items; i++) 2204 for (i = 1; i < items; i++)
1554 av_push (coro->args, newSVsv (ST (i))); 2205 av_push (coro->args, newSVsv (ST (i)));
1555} 2206}
1556 OUTPUT: 2207 OUTPUT:
1557 RETVAL 2208 RETVAL
1558 2209
1559# these not obviously related functions are all rolled into the same xs
1560# function to increase chances that they all will call transfer with the same
1561# stack offset
1562void 2210void
1563_set_stacklevel (...) 2211_set_stacklevel (...)
1564 ALIAS: 2212 CODE:
1565 Coro::State::transfer = 1 2213 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1566 Coro::schedule = 2
1567 Coro::cede = 3
1568 Coro::cede_notself = 4
1569 CODE:
1570{
1571 struct transfer_args ta;
1572 2214
1573 switch (ix) 2215void
1574 { 2216transfer (...)
1575 case 0: 2217 PROTOTYPE: $$
1576 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2218 CODE:
1577 ta.next = 0; 2219 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1578 break;
1579
1580 case 1:
1581 if (items != 2)
1582 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1583
1584 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1585 break;
1586
1587 case 2:
1588 prepare_schedule (aTHX_ &ta);
1589 break;
1590
1591 case 3:
1592 prepare_cede (aTHX_ &ta);
1593 break;
1594
1595 case 4:
1596 if (!prepare_cede_notself (aTHX_ &ta))
1597 XSRETURN_EMPTY;
1598
1599 break;
1600 }
1601
1602 BARRIER;
1603 TRANSFER (ta);
1604
1605 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1606 XSRETURN_YES;
1607}
1608 2220
1609bool 2221bool
1610_destroy (SV *coro_sv) 2222_destroy (SV *coro_sv)
1611 CODE: 2223 CODE:
1612 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2224 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1613 OUTPUT: 2225 OUTPUT:
1614 RETVAL 2226 RETVAL
1615 2227
1616void 2228void
1617_exit (code) 2229_exit (int code)
1618 int code
1619 PROTOTYPE: $ 2230 PROTOTYPE: $
1620 CODE: 2231 CODE:
1621 _exit (code); 2232 _exit (code);
1622 2233
1623int 2234int
1624cctx_stacksize (int new_stacksize = 0) 2235cctx_stacksize (int new_stacksize = 0)
2236 PROTOTYPE: ;$
1625 CODE: 2237 CODE:
1626 RETVAL = coro_stacksize; 2238 RETVAL = cctx_stacksize;
1627 if (new_stacksize) 2239 if (new_stacksize)
2240 {
1628 coro_stacksize = new_stacksize; 2241 cctx_stacksize = new_stacksize;
2242 ++cctx_gen;
2243 }
1629 OUTPUT: 2244 OUTPUT:
1630 RETVAL 2245 RETVAL
1631 2246
1632int 2247int
2248cctx_max_idle (int max_idle = 0)
2249 PROTOTYPE: ;$
2250 CODE:
2251 RETVAL = cctx_max_idle;
2252 if (max_idle > 1)
2253 cctx_max_idle = max_idle;
2254 OUTPUT:
2255 RETVAL
2256
2257int
1633cctx_count () 2258cctx_count ()
2259 PROTOTYPE:
1634 CODE: 2260 CODE:
1635 RETVAL = cctx_count; 2261 RETVAL = cctx_count;
1636 OUTPUT: 2262 OUTPUT:
1637 RETVAL 2263 RETVAL
1638 2264
1639int 2265int
1640cctx_idle () 2266cctx_idle ()
2267 PROTOTYPE:
1641 CODE: 2268 CODE:
1642 RETVAL = cctx_idle; 2269 RETVAL = cctx_idle;
1643 OUTPUT: 2270 OUTPUT:
1644 RETVAL 2271 RETVAL
1645 2272
1646void 2273void
1647list () 2274list ()
2275 PROTOTYPE:
1648 PPCODE: 2276 PPCODE:
1649{ 2277{
1650 struct coro *coro; 2278 struct coro *coro;
1651 for (coro = coro_first; coro; coro = coro->next) 2279 for (coro = coro_first; coro; coro = coro->next)
1652 if (coro->hv) 2280 if (coro->hv)
… …
1657call (Coro::State coro, SV *coderef) 2285call (Coro::State coro, SV *coderef)
1658 ALIAS: 2286 ALIAS:
1659 eval = 1 2287 eval = 1
1660 CODE: 2288 CODE:
1661{ 2289{
1662 if (coro->mainstack) 2290 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1663 { 2291 {
1664 struct coro temp; 2292 struct coro temp;
1665 2293
1666 if (!(coro->flags & CF_RUNNING)) 2294 if (!(coro->flags & CF_RUNNING))
1667 { 2295 {
2296 PUTBACK;
1668 save_perl (aTHX_ &temp); 2297 save_perl (aTHX_ &temp);
1669 load_perl (aTHX_ coro); 2298 load_perl (aTHX_ coro);
1670 } 2299 }
1671 2300
1672 { 2301 {
1673 dSP; 2302 dSP;
1674 ENTER; 2303 ENTER;
1675 SAVETMPS; 2304 SAVETMPS;
2305 PUTBACK;
2306 PUSHSTACK;
1676 PUSHMARK (SP); 2307 PUSHMARK (SP);
1677 PUTBACK;
1678 2308
1679 if (ix) 2309 if (ix)
1680 eval_sv (coderef, 0); 2310 eval_sv (coderef, 0);
1681 else 2311 else
1682 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2312 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1683 2313
2314 POPSTACK;
1684 SPAGAIN; 2315 SPAGAIN;
1685 FREETMPS; 2316 FREETMPS;
1686 LEAVE; 2317 LEAVE;
1687 PUTBACK; 2318 PUTBACK;
1688 } 2319 }
1689 2320
1690 if (!(coro->flags & CF_RUNNING)) 2321 if (!(coro->flags & CF_RUNNING))
1691 { 2322 {
1692 save_perl (aTHX_ coro); 2323 save_perl (aTHX_ coro);
1693 load_perl (aTHX_ &temp); 2324 load_perl (aTHX_ &temp);
2325 SPAGAIN;
1694 } 2326 }
1695 } 2327 }
1696} 2328}
1697 2329
1698SV * 2330SV *
… …
1707 RETVAL = boolSV (coro->flags & ix); 2339 RETVAL = boolSV (coro->flags & ix);
1708 OUTPUT: 2340 OUTPUT:
1709 RETVAL 2341 RETVAL
1710 2342
1711void 2343void
2344throw (Coro::State self, SV *throw = &PL_sv_undef)
2345 PROTOTYPE: $;$
2346 CODE:
2347 SvREFCNT_dec (self->throw);
2348 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2349
2350void
1712api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2351api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2352 PROTOTYPE: $;$
2353 C_ARGS: aTHX_ coro, flags
1713 2354
1714SV * 2355SV *
1715has_stack (Coro::State coro) 2356has_cctx (Coro::State coro)
1716 PROTOTYPE: $ 2357 PROTOTYPE: $
1717 CODE: 2358 CODE:
1718 RETVAL = boolSV (!!coro->cctx); 2359 RETVAL = boolSV (!!coro->cctx);
1719 OUTPUT: 2360 OUTPUT:
1720 RETVAL 2361 RETVAL
… …
1725 CODE: 2366 CODE:
1726 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2367 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1727 OUTPUT: 2368 OUTPUT:
1728 RETVAL 2369 RETVAL
1729 2370
1730IV 2371UV
1731rss (Coro::State coro) 2372rss (Coro::State coro)
1732 PROTOTYPE: $ 2373 PROTOTYPE: $
1733 ALIAS: 2374 ALIAS:
1734 usecount = 1 2375 usecount = 1
1735 CODE: 2376 CODE:
… …
1739 case 1: RETVAL = coro->usecount; break; 2380 case 1: RETVAL = coro->usecount; break;
1740 } 2381 }
1741 OUTPUT: 2382 OUTPUT:
1742 RETVAL 2383 RETVAL
1743 2384
2385void
2386force_cctx ()
2387 PROTOTYPE:
2388 CODE:
2389 SvSTATE_current->cctx->idle_sp = 0;
2390
2391void
2392swap_defsv (Coro::State self)
2393 PROTOTYPE: $
2394 ALIAS:
2395 swap_defav = 1
2396 CODE:
2397 if (!self->slot)
2398 croak ("cannot swap state with coroutine that has no saved state,");
2399 else
2400 {
2401 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2402 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2403
2404 SV *tmp = *src; *src = *dst; *dst = tmp;
2405 }
1744 2406
1745MODULE = Coro::State PACKAGE = Coro 2407MODULE = Coro::State PACKAGE = Coro
1746 2408
1747BOOT: 2409BOOT:
1748{ 2410{
1749 int i; 2411 int i;
1750 2412
1751 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1752 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1753 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 2413 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2414 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2415 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1754 2416
1755 coro_current = coro_get_sv ("Coro::current", FALSE); 2417 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1756 SvREADONLY_on (coro_current); 2418 SvREADONLY_on (coro_current);
1757 2419
1758 coro_stash = gv_stashpv ("Coro", TRUE); 2420 coro_stash = gv_stashpv ("Coro", TRUE);
1759 2421
1760 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2422 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
1766 2428
1767 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2429 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1768 coro_ready[i] = newAV (); 2430 coro_ready[i] = newAV ();
1769 2431
1770 { 2432 {
1771 SV *sv = perl_get_sv ("Coro::API", TRUE); 2433 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1772 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1773 2434
1774 coroapi.schedule = api_schedule; 2435 coroapi.schedule = api_schedule;
1775 coroapi.cede = api_cede; 2436 coroapi.cede = api_cede;
1776 coroapi.cede_notself = api_cede_notself; 2437 coroapi.cede_notself = api_cede_notself;
1777 coroapi.ready = api_ready; 2438 coroapi.ready = api_ready;
1778 coroapi.is_ready = api_is_ready; 2439 coroapi.is_ready = api_is_ready;
1779 coroapi.nready = &coro_nready; 2440 coroapi.nready = coro_nready;
1780 coroapi.current = coro_current; 2441 coroapi.current = coro_current;
1781 2442
1782 GCoroAPI = &coroapi; 2443 GCoroAPI = &coroapi;
1783 sv_setiv (sv, (IV)&coroapi); 2444 sv_setiv (sv, (IV)&coroapi);
1784 SvREADONLY_on (sv); 2445 SvREADONLY_on (sv);
1785 } 2446 }
1786} 2447}
2448
2449void
2450schedule (...)
2451 CODE:
2452 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
2453
2454void
2455cede (...)
2456 CODE:
2457 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
2458
2459void
2460cede_notself (...)
2461 CODE:
2462 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
1787 2463
1788void 2464void
1789_set_current (SV *current) 2465_set_current (SV *current)
1790 PROTOTYPE: $ 2466 PROTOTYPE: $
1791 CODE: 2467 CODE:
1792 SvREFCNT_dec (SvRV (coro_current)); 2468 SvREFCNT_dec (SvRV (coro_current));
1793 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2469 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2470
2471void
2472_set_readyhook (SV *hook)
2473 PROTOTYPE: $
2474 CODE:
2475 SvREFCNT_dec (coro_readyhook);
2476 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1794 2477
1795int 2478int
1796prio (Coro::State coro, int newprio = 0) 2479prio (Coro::State coro, int newprio = 0)
2480 PROTOTYPE: $;$
1797 ALIAS: 2481 ALIAS:
1798 nice = 1 2482 nice = 1
1799 CODE: 2483 CODE:
1800{ 2484{
1801 RETVAL = coro->prio; 2485 RETVAL = coro->prio;
… …
1816 2500
1817SV * 2501SV *
1818ready (SV *self) 2502ready (SV *self)
1819 PROTOTYPE: $ 2503 PROTOTYPE: $
1820 CODE: 2504 CODE:
1821 RETVAL = boolSV (api_ready (self)); 2505 RETVAL = boolSV (api_ready (aTHX_ self));
1822 OUTPUT: 2506 OUTPUT:
1823 RETVAL 2507 RETVAL
1824 2508
1825int 2509int
1826nready (...) 2510nready (...)
… …
1828 CODE: 2512 CODE:
1829 RETVAL = coro_nready; 2513 RETVAL = coro_nready;
1830 OUTPUT: 2514 OUTPUT:
1831 RETVAL 2515 RETVAL
1832 2516
1833void
1834throw (Coro::State self, SV *throw = &PL_sv_undef)
1835 PROTOTYPE: $;$
1836 CODE:
1837 SvREFCNT_dec (self->throw);
1838 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1839
1840# for async_pool speedup 2517# for async_pool speedup
1841void 2518void
1842_pool_1 (SV *cb) 2519_pool_1 (SV *cb)
1843 CODE: 2520 CODE:
1844{ 2521{
1845 struct coro *coro = SvSTATE (coro_current);
1846 HV *hv = (HV *)SvRV (coro_current); 2522 HV *hv = (HV *)SvRV (coro_current);
2523 struct coro *coro = SvSTATE_hv ((SV *)hv);
1847 AV *defav = GvAV (PL_defgv); 2524 AV *defav = GvAV (PL_defgv);
1848 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0); 2525 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1849 AV *invoke_av; 2526 AV *invoke_av;
1850 int i, len; 2527 int i, len;
1851 2528
1852 if (!invoke) 2529 if (!invoke)
2530 {
2531 SV *old = PL_diehook;
2532 PL_diehook = 0;
2533 SvREFCNT_dec (old);
1853 croak ("\3async_pool terminate\2\n"); 2534 croak ("\3async_pool terminate\2\n");
2535 }
1854 2536
1855 SvREFCNT_dec (coro->saved_deffh); 2537 SvREFCNT_dec (coro->saved_deffh);
1856 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2538 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1857 2539
1858 hv_store (hv, "desc", sizeof ("desc") - 1, 2540 hv_store (hv, "desc", sizeof ("desc") - 1,
1859 newSVpvn (strpair ("[async_pool]")), 0); 2541 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1860 2542
1861 invoke_av = (AV *)SvRV (invoke); 2543 invoke_av = (AV *)SvRV (invoke);
1862 len = av_len (invoke_av); 2544 len = av_len (invoke_av);
1863 2545
1864 sv_setsv (cb, AvARRAY (invoke_av)[0]); 2546 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1865 2547
1866 if (len > 0) 2548 if (len > 0)
1867 { 2549 {
1868 av_fill (defav, len - 1); 2550 av_fill (defav, len - 1);
1869 for (i = 0; i < len; ++i) 2551 for (i = 0; i < len; ++i)
1870 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2552 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1871 } 2553 }
1872
1873 SvREFCNT_dec (invoke);
1874} 2554}
1875 2555
1876void 2556void
1877_pool_2 (SV *cb) 2557_pool_2 (SV *cb)
1878 CODE: 2558 CODE:
1879{ 2559{
1880 struct coro *coro = SvSTATE (coro_current); 2560 struct coro *coro = SvSTATE_current;
1881 2561
1882 sv_setsv (cb, &PL_sv_undef); 2562 sv_setsv (cb, &PL_sv_undef);
1883 2563
1884 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2564 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1885 coro->saved_deffh = 0; 2565 coro->saved_deffh = 0;
1886 2566
1887 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2567 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1888 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2568 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2569 {
2570 SV *old = PL_diehook;
2571 PL_diehook = 0;
2572 SvREFCNT_dec (old);
1889 croak ("\3async_pool terminate\2\n"); 2573 croak ("\3async_pool terminate\2\n");
2574 }
1890 2575
1891 av_clear (GvAV (PL_defgv)); 2576 av_clear (GvAV (PL_defgv));
1892 hv_store ((HV *)SvRV (coro_current), strpair ("desc"), 2577 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1893 newSVpvn (strpair ("[async_pool idle]")), 0); 2578 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1894 2579
1895 coro->prio = 0; 2580 coro->prio = 0;
1896 2581
1897 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2582 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1898 api_trace (coro_current, 0); 2583 api_trace (aTHX_ coro_current, 0);
1899 2584
1900 av_push (av_async_pool, newSVsv (coro_current)); 2585 av_push (av_async_pool, newSVsv (coro_current));
1901} 2586}
1902 2587
1903 2588
1904MODULE = Coro::State PACKAGE = Coro::AIO 2589MODULE = Coro::State PACKAGE = Coro::AIO
1905 2590
1906SV * 2591void
1907_get_state () 2592_get_state (SV *self)
2593 PROTOTYPE: $
1908 CODE: 2594 PPCODE:
1909{ 2595{
1910 struct io_state *data; 2596 AV *defav = GvAV (PL_defgv);
1911 2597 AV *av = newAV ();
2598 int i;
1912 RETVAL = newSV (sizeof (struct io_state)); 2599 SV *data_sv = newSV (sizeof (struct io_state));
1913 data = (struct io_state *)SvPVX (RETVAL); 2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1914 SvCUR_set (RETVAL, sizeof (struct io_state)); 2601 SvCUR_set (data_sv, sizeof (struct io_state));
1915 SvPOK_only (RETVAL); 2602 SvPOK_only (data_sv);
1916 2603
1917 data->errorno = errno; 2604 data->errorno = errno;
1918 data->laststype = PL_laststype; 2605 data->laststype = PL_laststype;
1919 data->laststatval = PL_laststatval; 2606 data->laststatval = PL_laststatval;
1920 data->statcache = PL_statcache; 2607 data->statcache = PL_statcache;
2608
2609 av_extend (av, AvFILLp (defav) + 1 + 1);
2610
2611 for (i = 0; i <= AvFILLp (defav); ++i)
2612 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2613
2614 av_push (av, data_sv);
2615
2616 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2617
2618 api_ready (aTHX_ self);
1921} 2619}
1922 OUTPUT:
1923 RETVAL
1924 2620
1925void 2621void
1926_set_state (char *data_) 2622_set_state (SV *state)
1927 PROTOTYPE: $ 2623 PROTOTYPE: $
1928 CODE: 2624 PPCODE:
1929{ 2625{
1930 struct io_state *data = (void *)data_; 2626 AV *av = (AV *)SvRV (state);
2627 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2628 int i;
1931 2629
1932 errno = data->errorno; 2630 errno = data->errorno;
1933 PL_laststype = data->laststype; 2631 PL_laststype = data->laststype;
1934 PL_laststatval = data->laststatval; 2632 PL_laststatval = data->laststatval;
1935 PL_statcache = data->statcache; 2633 PL_statcache = data->statcache;
1936}
1937 2634
2635 EXTEND (SP, AvFILLp (av));
2636 for (i = 0; i < AvFILLp (av); ++i)
2637 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2638}
2639
2640
2641MODULE = Coro::State PACKAGE = Coro::AnyEvent
2642
2643BOOT:
2644 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2645
2646void
2647_schedule (...)
2648 CODE:
2649{
2650 static int incede;
2651
2652 api_cede_notself (aTHX);
2653
2654 ++incede;
2655 while (coro_nready >= incede && api_cede (aTHX))
2656 ;
2657
2658 sv_setsv (sv_activity, &PL_sv_undef);
2659 if (coro_nready >= incede)
2660 {
2661 PUSHMARK (SP);
2662 PUTBACK;
2663 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2664 SPAGAIN;
2665 }
2666
2667 --incede;
2668}
2669
2670
2671MODULE = Coro::State PACKAGE = PerlIO::cede
2672
2673BOOT:
2674 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2675
2676MODULE = Coro::State PACKAGE = Coro::Semaphore
2677
2678SV *
2679new (SV *klass, SV *count_ = 0)
2680 CODE:
2681{
2682 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2683 AV *av = newAV ();
2684 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2685 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2686}
2687 OUTPUT:
2688 RETVAL
2689
2690SV *
2691count (SV *self)
2692 CODE:
2693 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2694 OUTPUT:
2695 RETVAL
2696
2697void
2698up (SV *self, int adjust = 1)
2699 ALIAS:
2700 adjust = 1
2701 CODE:
2702 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2703
2704void
2705down (SV *self)
2706 CODE:
2707 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
2708
2709void
2710try (SV *self)
2711 PPCODE:
2712{
2713 AV *av = (AV *)SvRV (self);
2714 SV *count_sv = AvARRAY (av)[0];
2715 IV count = SvIVX (count_sv);
2716
2717 if (count > 0)
2718 {
2719 --count;
2720 SvIVX (count_sv) = count;
2721 XSRETURN_YES;
2722 }
2723 else
2724 XSRETURN_NO;
2725}
2726
2727void
2728waiters (SV *self)
2729 CODE:
2730{
2731 AV *av = (AV *)SvRV (self);
2732
2733 if (GIMME_V == G_SCALAR)
2734 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2735 else
2736 {
2737 int i;
2738 EXTEND (SP, AvFILLp (av) + 1 - 1);
2739 for (i = 1; i <= AvFILLp (av); ++i)
2740 PUSHs (newSVsv (AvARRAY (av)[i]));
2741 }
2742}
2743

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