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Comparing Coro/Coro/State.xs (file contents):
Revision 1.209 by root, Wed Oct 10 02:58:17 2007 UTC vs.
Revision 1.275 by root, Sat Nov 15 06:26:52 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
15#include <inttypes.h> /* portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif
16 25
17#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
18# include <unistd.h> 27# include <unistd.h>
19# include <sys/mman.h> 28# include <sys/mman.h>
20# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
37# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
38#endif 47#endif
39 48
40#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
41# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
42# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43#else
44# define REGISTER_STACK(cctx,start,end)
45#endif 51#endif
46 52
47/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
48#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
49 55
50#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
51 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
52 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
53 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
72# ifndef IS_PADCONST 78# ifndef IS_PADCONST
73# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
74# endif 80# endif
75#endif 81#endif
76 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
77/* 5.8.7 */ 101/* 5.8.7 */
78#ifndef SvRV_set 102#ifndef SvRV_set
79# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
80#endif 104#endif
81 105
82/* 5.8.8 */
83#ifndef GV_NOTQUAL
84# define GV_NOTQUAL 0
85#endif
86#ifndef newSV
87# define newSV(l) NEWSV(0,l)
88#endif
89
90#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
91# undef CORO_STACKGUARD 107# undef CORO_STACKGUARD
92#endif 108#endif
93 109
94#ifndef CORO_STACKGUARD 110#ifndef CORO_STACKGUARD
… …
100# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
101#endif 117#endif
102 118
103/* 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
104 * portable way as possible. */ 120 * portable way as possible. */
105#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
106#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
107 126
108#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
109 128
110#if __GNUC__ >= 3 129#if __GNUC__ >= 3
111# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
112# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
114#else 133#else
115# define attribute(x) 134# define attribute(x)
116# define BARRIER
117# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
118#endif 137#endif
119 138
120#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
121#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
122 141
123#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
124 143
125#include "CoroAPI.h" 144#include "CoroAPI.h"
126 145
127#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
147
128static perl_mutex coro_mutex; 148static perl_mutex coro_lock;
129# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
130# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD
152static void *coro_thx;
153# endif
154
131#else 155#else
156
132# define LOCK (void)0 157# define LOCK (void)0
133# define UNLOCK (void)0 158# define UNLOCK (void)0
134#endif
135 159
136#define strpair(const) const, sizeof (const) - 1 160#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
137 166
138/* helper storage struct for Coro::AIO */ 167/* helper storage struct for Coro::AIO */
139struct io_state 168struct io_state
140{ 169{
170 AV *res;
141 int errorno; 171 int errorno;
142 I32 laststype; 172 I32 laststype; /* U16 in 5.10.0 */
143 int laststatval; 173 int laststatval;
144 Stat_t statcache; 174 Stat_t statcache;
145}; 175};
146 176
177static double (*nvtime)(); /* so why doesn't it take void? */
178
179static U32 cctx_gen;
147static size_t coro_stacksize = CORO_STACKSIZE; 180static size_t cctx_stacksize = CORO_STACKSIZE;
148static struct CoroAPI coroapi; 181static struct CoroAPI coroapi;
149static AV *main_mainstack; /* used to differentiate between $main and others */ 182static AV *main_mainstack; /* used to differentiate between $main and others */
150static JMPENV *main_top_env; 183static JMPENV *main_top_env;
151static HV *coro_state_stash, *coro_stash; 184static HV *coro_state_stash, *coro_stash;
152static SV *coro_mortal; /* will be freed after next transfer */ 185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
153 187
154static GV *irsgv; /* $/ */ 188static GV *irsgv; /* $/ */
155static GV *stdoutgv; /* *STDOUT */ 189static GV *stdoutgv; /* *STDOUT */
156 190static SV *rv_diehook;
191static SV *rv_warnhook;
157static HV *hv_sig; /* %SIG */ 192static HV *hv_sig; /* %SIG */
158static SV *sv_diehook;
159static SV *sv_warnhook;
160 193
161/* async_pool helper stuff */ 194/* async_pool helper stuff */
162static SV *sv_pool_rss; 195static SV *sv_pool_rss;
163static SV *sv_pool_size; 196static SV *sv_pool_size;
164static AV *av_async_pool; 197static AV *av_async_pool;
165 198
166static struct coro_cctx *cctx_first[3]; /* index by GIMME_V type, void, scalar, array */ 199/* Coro::AnyEvent */
200static SV *sv_activity;
201
202static struct coro_cctx *cctx_first;
167static int cctx_count, cctx_idle[3]; 203static int cctx_count, cctx_idle;
168 204
169enum { 205enum {
170 CC_MAPPED = 0x01, 206 CC_MAPPED = 0x01,
171 CC_NOREUSE = 0x02, /* throw this away after tracing */ 207 CC_NOREUSE = 0x02, /* throw this away after tracing */
172 CC_TRACE = 0x04, 208 CC_TRACE = 0x04,
… …
174 CC_TRACE_LINE = 0x10, /* trace each statement */ 210 CC_TRACE_LINE = 0x10, /* trace each statement */
175 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 211 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
176}; 212};
177 213
178/* this is a structure representing a c-level coroutine */ 214/* this is a structure representing a c-level coroutine */
179typedef struct coro_cctx { 215typedef struct coro_cctx
216{
180 struct coro_cctx *next; 217 struct coro_cctx *next;
181 218
182 /* the stack */ 219 /* the stack */
183 void *sptr; 220 void *sptr;
184 size_t ssize; 221 size_t ssize;
… …
187 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 224 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
188 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 225 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
189 JMPENV *top_env; 226 JMPENV *top_env;
190 coro_context cctx; 227 coro_context cctx;
191 228
229 U32 gen;
192#if CORO_USE_VALGRIND 230#if CORO_USE_VALGRIND
193 int valgrind_id; 231 int valgrind_id;
194#endif 232#endif
195 unsigned char flags; 233 unsigned char flags;
196} coro_cctx; 234} coro_cctx;
… …
201 CF_NEW = 0x0004, /* has never been switched to */ 239 CF_NEW = 0x0004, /* has never been switched to */
202 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
203}; 241};
204 242
205/* the structure where most of the perl state is stored, overlaid on the cxstack */ 243/* the structure where most of the perl state is stored, overlaid on the cxstack */
206typedef struct { 244typedef struct
245{
207 SV *defsv; 246 SV *defsv;
208 AV *defav; 247 AV *defav;
209 SV *errsv; 248 SV *errsv;
210 SV *irsgv; 249 SV *irsgv;
211#define VAR(name,type) type name; 250#define VAR(name,type) type name;
… …
215 254
216#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
217 256
218/* this is a structure representing a perl-level coroutine */ 257/* this is a structure representing a perl-level coroutine */
219struct coro { 258struct coro {
220 /* the c coroutine allocated to this perl coroutine, if any */ 259 /* the C coroutine allocated to this perl coroutine, if any */
221 coro_cctx *cctx; 260 coro_cctx *cctx;
222 int gimme;
223 261
224 /* process data */ 262 /* process data */
263 struct CoroSLF slf_frame; /* saved slf frame */
225 AV *mainstack; 264 AV *mainstack;
226 perl_slots *slot; /* basically the saved sp */ 265 perl_slots *slot; /* basically the saved sp */
227 266
228 AV *args; /* data associated with this coroutine (initial args) */ 267 AV *args; /* data associated with this coroutine (initial args) */
229 int refcnt; /* coroutines are refcounted, yes */ 268 int refcnt; /* coroutines are refcounted, yes */
… …
244 struct coro *next, *prev; 283 struct coro *next, *prev;
245}; 284};
246 285
247typedef struct coro *Coro__State; 286typedef struct coro *Coro__State;
248typedef struct coro *Coro__State_or_hashref; 287typedef struct coro *Coro__State_or_hashref;
288
289static struct CoroSLF slf_frame; /* the current slf frame */
249 290
250/** Coro ********************************************************************/ 291/** Coro ********************************************************************/
251 292
252#define PRIO_MAX 3 293#define PRIO_MAX 3
253#define PRIO_HIGH 1 294#define PRIO_HIGH 1
… …
256#define PRIO_IDLE -3 297#define PRIO_IDLE -3
257#define PRIO_MIN -4 298#define PRIO_MIN -4
258 299
259/* for Coro.pm */ 300/* for Coro.pm */
260static SV *coro_current; 301static SV *coro_current;
302static SV *coro_readyhook;
261static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
262static int coro_nready;
263static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
264 306
265/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
266 308
267static SV * 309static SV *
268coro_get_sv (const char *name, int create) 310coro_get_sv (pTHX_ const char *name, int create)
269{ 311{
270#if PERL_VERSION_ATLEAST (5,9,0) 312#if PERL_VERSION_ATLEAST (5,10,0)
271 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
272 get_sv (name, create); 314 get_sv (name, create);
273#endif 315#endif
274 return get_sv (name, create); 316 return get_sv (name, create);
275} 317}
276 318
277static AV * 319static AV *
278coro_get_av (const char *name, int create) 320coro_get_av (pTHX_ const char *name, int create)
279{ 321{
280#if PERL_VERSION_ATLEAST (5,9,0) 322#if PERL_VERSION_ATLEAST (5,10,0)
281 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
282 get_av (name, create); 324 get_av (name, create);
283#endif 325#endif
284 return get_av (name, create); 326 return get_av (name, create);
285} 327}
286 328
287static HV * 329static HV *
288coro_get_hv (const char *name, int create) 330coro_get_hv (pTHX_ const char *name, int create)
289{ 331{
290#if PERL_VERSION_ATLEAST (5,9,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
291 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
292 get_hv (name, create); 334 get_hv (name, create);
293#endif 335#endif
294 return get_hv (name, create); 336 return get_hv (name, create);
295} 337}
… …
300 AV *padlist = CvPADLIST (cv); 342 AV *padlist = CvPADLIST (cv);
301 AV *newpadlist, *newpad; 343 AV *newpadlist, *newpad;
302 344
303 newpadlist = newAV (); 345 newpadlist = newAV ();
304 AvREAL_off (newpadlist); 346 AvREAL_off (newpadlist);
305#if PERL_VERSION_ATLEAST (5,9,0) 347#if PERL_VERSION_ATLEAST (5,10,0)
306 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
307#else 349#else
308 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
309#endif 351#endif
310 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
311 --AvFILLp (padlist); 353 --AvFILLp (padlist);
312 354
313 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
314 av_store (newpadlist, 1, (SV *)newpad); 356 av_store (newpadlist, 1, (SV *)newpad);
315 357
316 return newpadlist; 358 return newpadlist;
317} 359}
318 360
… …
348 390
349 /* casting is fun. */ 391 /* casting is fun. */
350 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
351 free_padlist (aTHX_ padlist); 393 free_padlist (aTHX_ padlist);
352 394
353 SvREFCNT_dec (av); 395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
354 396
355 return 0; 397 return 0;
356} 398}
357 399
358#define PERL_MAGIC_coro PERL_MAGIC_ext 400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
359 402
360static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 403static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0,
405 coro_cv_free
406};
361 407
362#define CORO_MAGIC(cv) \ 408#define CORO_MAGIC(sv, type) \
363 SvMAGIC (cv) \ 409 SvMAGIC (sv) \
364 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 410 ? SvMAGIC (sv)->mg_type == type \
365 ? SvMAGIC (cv) \ 411 ? SvMAGIC (sv) \
366 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 412 : mg_find (sv, type) \
367 : 0 413 : 0
368 414
369static struct coro * 415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
370SvSTATE_ (pTHX_ SV *coro) 419SvSTATE_ (pTHX_ SV *coro)
371{ 420{
372 HV *stash; 421 HV *stash;
373 MAGIC *mg; 422 MAGIC *mg;
374 423
… …
384 /* very slow, but rare, check */ 433 /* very slow, but rare, check */
385 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
386 croak ("Coro::State object required"); 435 croak ("Coro::State object required");
387 } 436 }
388 437
389 mg = CORO_MAGIC (coro); 438 mg = CORO_MAGIC_state (coro);
390 return (struct coro *)mg->mg_ptr; 439 return (struct coro *)mg->mg_ptr;
391} 440}
392 441
393#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
394 443
395/* the next two functions merely cache the padlists */ 444/* the next two functions merely cache the padlists */
396static void 445static void
397get_padlist (pTHX_ CV *cv) 446get_padlist (pTHX_ CV *cv)
398{ 447{
399 MAGIC *mg = CORO_MAGIC (cv); 448 MAGIC *mg = CORO_MAGIC_cv (cv);
400 AV *av; 449 AV *av;
401 450
402 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
403 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
404 else 453 else
405 { 454 {
406#if CORO_PREFER_PERL_FUNCTIONS 455#if CORO_PREFER_PERL_FUNCTIONS
407 /* this is probably cleaner, but also slower? */ 456 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */
408 CV *cp = Perl_cv_clone (cv); 458 CV *cp = Perl_cv_clone (cv);
409 CvPADLIST (cv) = CvPADLIST (cp); 459 CvPADLIST (cv) = CvPADLIST (cp);
410 CvPADLIST (cp) = 0; 460 CvPADLIST (cp) = 0;
411 SvREFCNT_dec (cp); 461 SvREFCNT_dec (cp);
412#else 462#else
… …
416} 466}
417 467
418static void 468static void
419put_padlist (pTHX_ CV *cv) 469put_padlist (pTHX_ CV *cv)
420{ 470{
421 MAGIC *mg = CORO_MAGIC (cv); 471 MAGIC *mg = CORO_MAGIC_cv (cv);
422 AV *av; 472 AV *av;
423 473
424 if (expect_false (!mg)) 474 if (expect_false (!mg))
425 { 475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
426 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
427 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
428 mg->mg_virtual = &vtbl_coro;
429 mg->mg_obj = (SV *)newAV ();
430 }
431 476
432 av = (AV *)mg->mg_obj; 477 av = (AV *)mg->mg_obj;
433 478
434 if (expect_false (AvFILLp (av) >= AvMAX (av))) 479 if (expect_false (AvFILLp (av) >= AvMAX (av)))
435 av_extend (av, AvMAX (av) + 1); 480 av_extend (av, AvMAX (av) + 1);
… …
453 GvSV (irsgv) = slot->irsgv; 498 GvSV (irsgv) = slot->irsgv;
454 499
455 #define VAR(name,type) PL_ ## name = slot->name; 500 #define VAR(name,type) PL_ ## name = slot->name;
456 # include "state.h" 501 # include "state.h"
457 #undef VAR 502 #undef VAR
458
459 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
460 /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
461 503
462 { 504 {
463 dSP; 505 dSP;
464 506
465 CV *cv; 507 CV *cv;
… …
472 CvPADLIST (cv) = (AV *)POPs; 514 CvPADLIST (cv) = (AV *)POPs;
473 } 515 }
474 516
475 PUTBACK; 517 PUTBACK;
476 } 518 }
519
520 slf_frame = c->slf_frame;
477} 521}
478 522
479static void 523static void
480save_perl (pTHX_ Coro__State c) 524save_perl (pTHX_ Coro__State c)
481{ 525{
526 c->slf_frame = slf_frame;
527
482 { 528 {
483 dSP; 529 dSP;
484 I32 cxix = cxstack_ix; 530 I32 cxix = cxstack_ix;
485 PERL_CONTEXT *ccstk = cxstack; 531 PERL_CONTEXT *ccstk = cxstack;
486 PERL_SI *top_si = PL_curstackinfo; 532 PERL_SI *top_si = PL_curstackinfo;
… …
504 550
505 if (expect_true (CvDEPTH (cv))) 551 if (expect_true (CvDEPTH (cv)))
506 { 552 {
507 EXTEND (SP, 3); 553 EXTEND (SP, 3);
508 PUSHs ((SV *)CvPADLIST (cv)); 554 PUSHs ((SV *)CvPADLIST (cv));
509 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 555 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
510 PUSHs ((SV *)cv); 556 PUSHs ((SV *)cv);
511 557
512 CvDEPTH (cv) = 0; 558 CvDEPTH (cv) = 0;
513 get_padlist (aTHX_ cv); 559 get_padlist (aTHX_ cv);
514 } 560 }
… …
553 #undef VAR 599 #undef VAR
554 } 600 }
555} 601}
556 602
557/* 603/*
558 * allocate various perl stacks. This is an exact copy 604 * allocate various perl stacks. This is almost an exact copy
559 * of perl.c:init_stacks, except that it uses less memory 605 * of perl.c:init_stacks, except that it uses less memory
560 * on the (sometimes correct) assumption that coroutines do 606 * on the (sometimes correct) assumption that coroutines do
561 * not usually need a lot of stackspace. 607 * not usually need a lot of stackspace.
562 */ 608 */
563#if CORO_PREFER_PERL_FUNCTIONS 609#if CORO_PREFER_PERL_FUNCTIONS
… …
594 640
595 New(54,PL_savestack,24,ANY); 641 New(54,PL_savestack,24,ANY);
596 PL_savestack_ix = 0; 642 PL_savestack_ix = 0;
597 PL_savestack_max = 24; 643 PL_savestack_max = 24;
598 644
599#if !PERL_VERSION_ATLEAST (5,9,0) 645#if !PERL_VERSION_ATLEAST (5,10,0)
600 New(54,PL_retstack,4,OP*); 646 New(54,PL_retstack,4,OP*);
601 PL_retstack_ix = 0; 647 PL_retstack_ix = 0;
602 PL_retstack_max = 4; 648 PL_retstack_max = 4;
603#endif 649#endif
604} 650}
… …
606 652
607/* 653/*
608 * destroy the stacks, the callchain etc... 654 * destroy the stacks, the callchain etc...
609 */ 655 */
610static void 656static void
611coro_destroy_stacks (pTHX) 657coro_destruct_stacks (pTHX)
612{ 658{
613 while (PL_curstackinfo->si_next) 659 while (PL_curstackinfo->si_next)
614 PL_curstackinfo = PL_curstackinfo->si_next; 660 PL_curstackinfo = PL_curstackinfo->si_next;
615 661
616 while (PL_curstackinfo) 662 while (PL_curstackinfo)
… …
627 673
628 Safefree (PL_tmps_stack); 674 Safefree (PL_tmps_stack);
629 Safefree (PL_markstack); 675 Safefree (PL_markstack);
630 Safefree (PL_scopestack); 676 Safefree (PL_scopestack);
631 Safefree (PL_savestack); 677 Safefree (PL_savestack);
632#if !PERL_VERSION_ATLEAST (5,9,0) 678#if !PERL_VERSION_ATLEAST (5,10,0)
633 Safefree (PL_retstack); 679 Safefree (PL_retstack);
634#endif 680#endif
635} 681}
636 682
637static size_t 683static size_t
… …
653 #undef VAR 699 #undef VAR
654 } 700 }
655 else 701 else
656 slot = coro->slot; 702 slot = coro->slot;
657 703
704 if (slot)
705 {
658 rss += sizeof (slot->curstackinfo); 706 rss += sizeof (slot->curstackinfo);
659 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
660 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
661 rss += slot->tmps_max * sizeof (SV *); 709 rss += slot->tmps_max * sizeof (SV *);
662 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
663 rss += slot->scopestack_max * sizeof (I32); 711 rss += slot->scopestack_max * sizeof (I32);
664 rss += slot->savestack_max * sizeof (ANY); 712 rss += slot->savestack_max * sizeof (ANY);
665 713
666#if !PERL_VERSION_ATLEAST (5,9,0) 714#if !PERL_VERSION_ATLEAST (5,10,0)
667 rss += slot->retstack_max * sizeof (OP *); 715 rss += slot->retstack_max * sizeof (OP *);
668#endif 716#endif
717 }
669 } 718 }
670 719
671 return rss; 720 return rss;
672} 721}
673 722
674/** coroutine stack handling ************************************************/ 723/** coroutine stack handling ************************************************/
724
725static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
726static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
727static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
728
729/* apparently < 5.8.8 */
730#ifndef MgPV_nolen_const
731#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
732 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
733 (const char*)(mg)->mg_ptr)
734#endif
735
736/*
737 * This overrides the default magic get method of %SIG elements.
738 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
739 * and instead of tryign to save and restore the hash elements, we just provide
740 * readback here.
741 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
742 * not expecting this to actually change the hook. This is a potential problem
743 * when a schedule happens then, but we ignore this.
744 */
745static int
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{
748 const char *s = MgPV_nolen_const (mg);
749
750 if (*s == '_')
751 {
752 SV **svp = 0;
753
754 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
755 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
756
757 if (svp)
758 {
759 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
760 return 0;
761 }
762 }
763
764 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
765}
766
767static int
768coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
769{
770 const char *s = MgPV_nolen_const (mg);
771
772 if (*s == '_')
773 {
774 SV **svp = 0;
775
776 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
777 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
778
779 if (svp)
780 {
781 SV *old = *svp;
782 *svp = 0;
783 SvREFCNT_dec (old);
784 return 0;
785 }
786 }
787
788 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
789}
790
791static int
792coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
793{
794 const char *s = MgPV_nolen_const (mg);
795
796 if (*s == '_')
797 {
798 SV **svp = 0;
799
800 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802
803 if (svp)
804 {
805 SV *old = *svp;
806 *svp = newSVsv (sv);
807 SvREFCNT_dec (old);
808 return 0;
809 }
810 }
811
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813}
814
815static void
816prepare_nop (aTHX_ struct coro_transfer_args *ta)
817{
818 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta;
820}
821
822static int
823slf_check_nop (aTHX)
824{
825 return 0;
826}
675 827
676static void 828static void
677coro_setup (pTHX_ struct coro *coro) 829coro_setup (pTHX_ struct coro *coro)
678{ 830{
679 /* 831 /*
… …
688 PL_curpm = 0; 840 PL_curpm = 0;
689 PL_curpad = 0; 841 PL_curpad = 0;
690 PL_localizing = 0; 842 PL_localizing = 0;
691 PL_dirty = 0; 843 PL_dirty = 0;
692 PL_restartop = 0; 844 PL_restartop = 0;
693 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); 845#if PERL_VERSION_ATLEAST (5,10,0)
694 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); 846 PL_parser = 0;
847#endif
848
849 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
695 852
696 GvSV (PL_defgv) = newSV (0); 853 GvSV (PL_defgv) = newSV (0);
697 GvAV (PL_defgv) = coro->args; coro->args = 0; 854 GvAV (PL_defgv) = coro->args; coro->args = 0;
698 GvSV (PL_errgv) = newSV (0); 855 GvSV (PL_errgv) = newSV (0);
699 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
700 PL_rs = newSVsv (GvSV (irsgv)); 857 PL_rs = newSVsv (GvSV (irsgv));
701 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
702 859
703 { 860 {
704 dSP; 861 dSP;
705 LOGOP myop; 862 UNOP myop;
706 863
707 Zero (&myop, 1, LOGOP); 864 Zero (&myop, 1, UNOP);
708 myop.op_next = Nullop; 865 myop.op_next = Nullop;
709 myop.op_flags = OPf_WANT_VOID; 866 myop.op_flags = OPf_WANT_VOID;
710 867
711 PUSHMARK (SP); 868 PUSHMARK (SP);
712 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
713 PUTBACK; 870 PUTBACK;
714 PL_op = (OP *)&myop; 871 PL_op = (OP *)&myop;
715 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
716 SPAGAIN; 873 SPAGAIN;
717
718 /*
719 * now its very tricky. the "tail" of the next transfer might end up
720 * either in a new cctx, or an existing one.
721 * in case of an existing one we have to take care of whatever
722 * entersub and transfer do to the perl stack.
723 */
724 ENTER;
725 EXTEND (SP, 4);
726 PUSHs ((SV *)0); /* items */
727 PUSHs ((SV *)0); /* ix, set_stacklevel */
728 PUSHs ((SV *)(sp - PL_stack_base + 1)); /* ax */
729 PUSHs ((SV *)0); /* again */
730 PUTBACK;
731 } 874 }
732}
733 875
876 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881}
882
734static void 883static void
735coro_destroy (pTHX_ struct coro *coro) 884coro_destruct (pTHX_ struct coro *coro)
736{ 885{
737 if (!IN_DESTRUCT) 886 if (!IN_DESTRUCT)
738 { 887 {
739 /* restore all saved variables and stuff */ 888 /* restore all saved variables and stuff */
740 LEAVE_SCOPE (0); 889 LEAVE_SCOPE (0);
… …
762 SvREFCNT_dec (PL_warnhook); 911 SvREFCNT_dec (PL_warnhook);
763 912
764 SvREFCNT_dec (coro->saved_deffh); 913 SvREFCNT_dec (coro->saved_deffh);
765 SvREFCNT_dec (coro->throw); 914 SvREFCNT_dec (coro->throw);
766 915
767 coro_destroy_stacks (aTHX); 916 coro_destruct_stacks (aTHX);
768} 917}
769 918
770static void 919INLINE void
771free_coro_mortal (pTHX) 920free_coro_mortal (pTHX)
772{ 921{
773 if (expect_true (coro_mortal)) 922 if (expect_true (coro_mortal))
774 { 923 {
775 SvREFCNT_dec (coro_mortal); 924 SvREFCNT_dec (coro_mortal);
… …
809 : cx->blk_gimme == G_SCALAR ? bot + 1 958 : cx->blk_gimme == G_SCALAR ? bot + 1
810 : bot; 959 : bot;
811 960
812 av_extend (av, top - bot); 961 av_extend (av, top - bot);
813 while (bot < top) 962 while (bot < top)
814 av_push (av, SvREFCNT_inc (*bot++)); 963 av_push (av, SvREFCNT_inc_NN (*bot++));
815 964
816 PL_runops = RUNOPS_DEFAULT; 965 PL_runops = RUNOPS_DEFAULT;
817 ENTER; 966 ENTER;
818 SAVETMPS; 967 SAVETMPS;
819 EXTEND (SP, 3); 968 EXTEND (SP, 3);
820 PUSHMARK (SP); 969 PUSHMARK (SP);
821 PUSHs (&PL_sv_no); 970 PUSHs (&PL_sv_no);
822 PUSHs (fullname); 971 PUSHs (fullname);
823 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 972 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
824 PUTBACK; 973 PUTBACK;
825 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 974 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
826 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 975 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
827 SPAGAIN; 976 SPAGAIN;
828 FREETMPS; 977 FREETMPS;
829 LEAVE; 978 LEAVE;
830 PL_runops = runops_trace; 979 PL_runops = runops_trace;
… …
857 SAVETMPS; 1006 SAVETMPS;
858 EXTEND (SP, 3); 1007 EXTEND (SP, 3);
859 PUSHMARK (SP); 1008 PUSHMARK (SP);
860 PUSHs (&PL_sv_yes); 1009 PUSHs (&PL_sv_yes);
861 PUSHs (fullname); 1010 PUSHs (fullname);
862 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
863 PUTBACK; 1012 PUTBACK;
864 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
865 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1014 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
866 SPAGAIN; 1015 SPAGAIN;
867 FREETMPS; 1016 FREETMPS;
868 LEAVE; 1017 LEAVE;
869 PL_runops = runops_trace; 1018 PL_runops = runops_trace;
… …
883 PL_runops = RUNOPS_DEFAULT; 1032 PL_runops = RUNOPS_DEFAULT;
884 PUSHMARK (SP); 1033 PUSHMARK (SP);
885 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1034 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
886 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1035 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
887 PUTBACK; 1036 PUTBACK;
888 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); 1037 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
889 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1038 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
890 SPAGAIN; 1039 SPAGAIN;
891 FREETMPS; 1040 FREETMPS;
892 LEAVE; 1041 LEAVE;
893 PL_runops = runops_trace; 1042 PL_runops = runops_trace;
… …
899 1048
900 TAINT_NOT; 1049 TAINT_NOT;
901 return 0; 1050 return 0;
902} 1051}
903 1052
1053static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1055{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0;
1058}
1059
904/* inject a fake call to Coro::State::_cctx_init into the execution */ 1060/* inject a fake call to Coro::State::_cctx_init into the execution */
905/* _cctx_init should be careful, as it could be called at almost any time */ 1061/* _cctx_init should be careful, as it could be called at almost any time */
906/* during execution of a perl program */ 1062/* during execution of a perl program */
1063/* also initialises PL_top_env */
907static void NOINLINE 1064static void NOINLINE
908cctx_prepare (pTHX_ coro_cctx *cctx) 1065cctx_prepare (pTHX_ coro_cctx *cctx)
909{ 1066{
910 dSP; 1067 dSP;
911 LOGOP myop; 1068 UNOP myop;
912 1069
913 PL_top_env = &PL_start_env; 1070 PL_top_env = &PL_start_env;
914 1071
915 if (cctx->flags & CC_TRACE) 1072 if (cctx->flags & CC_TRACE)
916 PL_runops = runops_trace; 1073 PL_runops = runops_trace;
917 1074
918 Zero (&myop, 1, LOGOP); 1075 Zero (&myop, 1, UNOP);
919 myop.op_next = PL_op; 1076 myop.op_next = PL_op;
920 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
921 1078
922 PUSHMARK (SP); 1079 PUSHMARK (SP);
923 EXTEND (SP, 2); 1080 EXTEND (SP, 2);
924 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1081 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
925 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
926 PUTBACK; 1083 PUTBACK;
927 PL_op = (OP *)&myop; 1084 PL_op = (OP *)&myop;
928 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
929 SPAGAIN; 1086 SPAGAIN;
930} 1087}
931 1088
1089/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void
1091transfer_tail (pTHX)
1092{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX);
1098 UNLOCK;
1099
1100 if (expect_false (next->throw))
1101 {
1102 SV *exception = sv_2mortal (next->throw);
1103
1104 next->throw = 0;
1105 sv_setsv (ERRSV, exception);
1106 croak (0);
1107 }
1108}
1109
932/* 1110/*
933 * this is a _very_ stripped down perl interpreter ;) 1111 * this is a _very_ stripped down perl interpreter ;)
934 */ 1112 */
935static void 1113static void
936cctx_run (void *arg) 1114cctx_run (void *arg)
937{ 1115{
1116#ifdef USE_ITHREADS
1117# if CORO_PTHREAD
1118 PERL_SET_CONTEXT (coro_thx);
1119# endif
1120#endif
1121 {
938 dTHX; 1122 dTHX;
939 1123
940 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1124 /* normally we would need to skip the entersub here */
941 UNLOCK; 1125 /* not doing so will re-execute it, which is exactly what we want */
942
943 /* we now skip the entersub that lead to transfer() */
944 PL_op = PL_op->op_next; 1126 /* PL_nop = PL_nop->op_next */
945 1127
946 /* inject a fake subroutine call to cctx_init */ 1128 /* inject a fake subroutine call to cctx_init */
947 cctx_prepare (aTHX_ (coro_cctx *)arg); 1129 cctx_prepare (aTHX_ (coro_cctx *)arg);
948 1130
1131 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX);
1134
949 /* somebody or something will hit me for both perl_run and PL_restartop */ 1135 /* somebody or something will hit me for both perl_run and PL_restartop */
950 PL_restartop = PL_op; 1136 PL_restartop = PL_op;
951 perl_run (PL_curinterp); 1137 perl_run (PL_curinterp);
952 1138
953 /* 1139 /*
954 * If perl-run returns we assume exit() was being called or the coro 1140 * If perl-run returns we assume exit() was being called or the coro
955 * fell off the end, which seems to be the only valid (non-bug) 1141 * fell off the end, which seems to be the only valid (non-bug)
956 * reason for perl_run to return. We try to exit by jumping to the 1142 * reason for perl_run to return. We try to exit by jumping to the
957 * bootstrap-time "top" top_env, as we cannot restore the "main" 1143 * bootstrap-time "top" top_env, as we cannot restore the "main"
958 * coroutine as Coro has no such concept 1144 * coroutine as Coro has no such concept
959 */ 1145 */
960 PL_top_env = main_top_env; 1146 PL_top_env = main_top_env;
961 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 }
962} 1149}
963 1150
964static coro_cctx * 1151static coro_cctx *
965cctx_new () 1152cctx_new ()
966{ 1153{
967 coro_cctx *cctx; 1154 coro_cctx *cctx;
1155
1156 ++cctx_count;
1157 New (0, cctx, 1, coro_cctx);
1158
1159 cctx->gen = cctx_gen;
1160 cctx->flags = 0;
1161 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1162
1163 return cctx;
1164}
1165
1166/* create a new cctx only suitable as source */
1167static coro_cctx *
1168cctx_new_empty ()
1169{
1170 coro_cctx *cctx = cctx_new ();
1171
1172 cctx->sptr = 0;
1173 coro_create (&cctx->cctx, 0, 0, 0, 0);
1174
1175 return cctx;
1176}
1177
1178/* create a new cctx suitable as destination/running a perl interpreter */
1179static coro_cctx *
1180cctx_new_run ()
1181{
1182 coro_cctx *cctx = cctx_new ();
968 void *stack_start; 1183 void *stack_start;
969 size_t stack_size; 1184 size_t stack_size;
970 1185
971 ++cctx_count;
972
973 Newz (0, cctx, 1, coro_cctx);
974
975#if HAVE_MMAP 1186#if HAVE_MMAP
976 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1187 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
977 /* mmap supposedly does allocate-on-write for us */ 1188 /* mmap supposedly does allocate-on-write for us */
978 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1189 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
979 1190
980 if (cctx->sptr != (void *)-1) 1191 if (cctx->sptr != (void *)-1)
981 { 1192 {
982# if CORO_STACKGUARD 1193 #if CORO_STACKGUARD
983 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1194 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
984# endif 1195 #endif
985 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1196 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
986 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1197 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
987 cctx->flags |= CC_MAPPED; 1198 cctx->flags |= CC_MAPPED;
988 } 1199 }
989 else 1200 else
990#endif 1201#endif
991 { 1202 {
992 cctx->ssize = coro_stacksize * (long)sizeof (long); 1203 cctx->ssize = cctx_stacksize * (long)sizeof (long);
993 New (0, cctx->sptr, coro_stacksize, long); 1204 New (0, cctx->sptr, cctx_stacksize, long);
994 1205
995 if (!cctx->sptr) 1206 if (!cctx->sptr)
996 { 1207 {
997 perror ("FATAL: unable to allocate stack for coroutine"); 1208 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
998 _exit (EXIT_FAILURE); 1209 _exit (EXIT_FAILURE);
999 } 1210 }
1000 1211
1001 stack_start = cctx->sptr; 1212 stack_start = cctx->sptr;
1002 stack_size = cctx->ssize; 1213 stack_size = cctx->ssize;
1003 } 1214 }
1004 1215
1005 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1216 #if CORO_USE_VALGRIND
1217 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1218 #endif
1219
1006 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1220 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1007 1221
1008 return cctx; 1222 return cctx;
1009} 1223}
1010 1224
… …
1013{ 1227{
1014 if (!cctx) 1228 if (!cctx)
1015 return; 1229 return;
1016 1230
1017 --cctx_count; 1231 --cctx_count;
1232 coro_destroy (&cctx->cctx);
1018 1233
1234 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr)
1236 {
1019#if CORO_USE_VALGRIND 1237 #if CORO_USE_VALGRIND
1020 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1238 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1021#endif 1239 #endif
1022 1240
1023#if HAVE_MMAP 1241#if HAVE_MMAP
1024 if (cctx->flags & CC_MAPPED) 1242 if (cctx->flags & CC_MAPPED)
1025 munmap (cctx->sptr, cctx->ssize); 1243 munmap (cctx->sptr, cctx->ssize);
1026 else 1244 else
1027#endif 1245#endif
1028 Safefree (cctx->sptr); 1246 Safefree (cctx->sptr);
1247 }
1029 1248
1030 Safefree (cctx); 1249 Safefree (cctx);
1031} 1250}
1032 1251
1033/* wether this cctx should be destructed */ 1252/* wether this cctx should be destructed */
1034#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1253#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1035 1254
1036static coro_cctx * 1255static coro_cctx *
1037cctx_get (pTHX_ int gimme) 1256cctx_get (pTHX)
1038{ 1257{
1039 while (expect_true (cctx_first[gimme])) 1258 while (expect_true (cctx_first))
1040 { 1259 {
1041 coro_cctx *cctx = cctx_first[gimme]; 1260 coro_cctx *cctx = cctx_first;
1042 cctx_first[gimme] = cctx->next; 1261 cctx_first = cctx->next;
1043 --cctx_idle[gimme]; 1262 --cctx_idle;
1044 1263
1045 if (expect_true (!CCTX_EXPIRED (cctx))) 1264 if (expect_true (!CCTX_EXPIRED (cctx)))
1046 return cctx; 1265 return cctx;
1047 1266
1048 cctx_destroy (cctx); 1267 cctx_destroy (cctx);
1049 } 1268 }
1050 1269
1051 assert (!gimme);
1052 return cctx_new (); 1270 return cctx_new_run ();
1053} 1271}
1054 1272
1055static void 1273static void
1056cctx_put (coro_cctx *cctx, int gimme) 1274cctx_put (coro_cctx *cctx)
1057{ 1275{
1276 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1277
1058 /* free another cctx if overlimit */ 1278 /* free another cctx if overlimit */
1059 if (expect_false (cctx_idle[gimme] >= MAX_IDLE_CCTX)) 1279 if (expect_false (cctx_idle >= cctx_max_idle))
1060 { 1280 {
1061 coro_cctx *first = cctx_first[gimme]; 1281 coro_cctx *first = cctx_first;
1062 cctx_first[gimme] = first->next; 1282 cctx_first = first->next;
1063 --cctx_idle[gimme]; 1283 --cctx_idle;
1064 1284
1065 cctx_destroy (first); 1285 cctx_destroy (first);
1066 } 1286 }
1067 1287
1068 ++cctx_idle[gimme]; 1288 ++cctx_idle;
1069 cctx->next = cctx_first[gimme]; 1289 cctx->next = cctx_first;
1070 cctx_first[gimme] = cctx; 1290 cctx_first = cctx;
1071} 1291}
1072 1292
1073/** coroutine switching *****************************************************/ 1293/** coroutine switching *****************************************************/
1074 1294
1075static void 1295static void
1076transfer_check (pTHX_ struct coro *prev, struct coro *next) 1296transfer_check (pTHX_ struct coro *prev, struct coro *next)
1077{ 1297{
1078 if (expect_true (prev != next)) 1298 if (expect_true (prev != next))
1079 { 1299 {
1080 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1081 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1301 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1082 1302
1083 if (expect_false (next->flags & CF_RUNNING)) 1303 if (expect_false (next->flags & CF_RUNNING))
1084 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1304 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1085 1305
1086 if (expect_false (next->flags & CF_DESTROYED)) 1306 if (expect_false (next->flags & CF_DESTROYED))
1087 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1307 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1088 1308
1089 if (
1090#if PERL_VERSION_ATLEAST (5,9,0) 1309#if !PERL_VERSION_ATLEAST (5,10,0)
1091 expect_false (PL_parser)
1092#else
1093 expect_false (PL_lex_state != LEX_NOTPARSING) 1310 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1094#endif
1095 )
1096 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1311 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1312#endif
1097 } 1313 }
1098} 1314}
1099 1315
1100/* always use the TRANSFER macro */ 1316/* always use the TRANSFER macro */
1101static void NOINLINE 1317static void NOINLINE
1102transfer (pTHX_ struct coro *prev, struct coro *next) 1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1103{ 1319{
1104 dSTACKLEVEL; 1320 dSTACKLEVEL;
1105 1321
1106 /* sometimes transfer is only called to set idle_sp */ 1322 /* sometimes transfer is only called to set idle_sp */
1107 if (expect_false (!next)) 1323 if (expect_false (!next))
1108 { 1324 {
1109 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1325 ((coro_cctx *)prev)->idle_sp = stacklevel;
1110 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1111 } 1327 }
1112 else if (expect_true (prev != next)) 1328 else if (expect_true (prev != next))
1113 { 1329 {
1114 coro_cctx *prev__cctx; 1330 coro_cctx *prev__cctx;
1115 1331
1116 if (expect_false (prev->flags & CF_NEW)) 1332 if (expect_false (prev->flags & CF_NEW))
1117 { 1333 {
1118 /* create a new empty context */ 1334 /* create a new empty/source context */
1119 Newz (0, prev->cctx, 1, coro_cctx); 1335 prev->cctx = cctx_new_empty ();
1120 prev->flags &= ~CF_NEW; 1336 prev->flags &= ~CF_NEW;
1121 prev->flags |= CF_RUNNING; 1337 prev->flags |= CF_RUNNING;
1122 } 1338 }
1123 1339
1124 prev->flags &= ~CF_RUNNING; 1340 prev->flags &= ~CF_RUNNING;
1125 next->flags |= CF_RUNNING; 1341 next->flags |= CF_RUNNING;
1126 1342
1127 LOCK; 1343 LOCK;
1344
1345 /* first get rid of the old state */
1346 save_perl (aTHX_ prev);
1128 1347
1129 if (expect_false (next->flags & CF_NEW)) 1348 if (expect_false (next->flags & CF_NEW))
1130 { 1349 {
1131 /* need to start coroutine */ 1350 /* need to start coroutine */
1132 next->flags &= ~CF_NEW; 1351 next->flags &= ~CF_NEW;
1133 /* first get rid of the old state */
1134 save_perl (aTHX_ prev);
1135 /* setup coroutine call */ 1352 /* setup coroutine call */
1136 coro_setup (aTHX_ next); 1353 coro_setup (aTHX_ next);
1137 } 1354 }
1138 else 1355 else
1356 load_perl (aTHX_ next);
1357
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */
1361 if (expect_true (
1362 prev__cctx->idle_sp == stacklevel
1363 && !(prev__cctx->flags & CC_TRACE)
1364 && !force_cctx
1365 ))
1139 { 1366 {
1140 /* coroutine already started */
1141 save_perl (aTHX_ prev);
1142 load_perl (aTHX_ next);
1143 }
1144
1145 prev__cctx = prev->cctx;
1146
1147 /* possibly "free" the cctx */
1148 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
1149 {
1150 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1151 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1368 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1152 1369
1153 prev->cctx = 0; 1370 prev->cctx = 0;
1154 1371
1155 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1372 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1156 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1373 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1157 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1374 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1158 if (!next->cctx) 1375 if (!next->cctx)
1159 next->cctx = cctx_get (aTHX_ next->gimme); 1376 next->cctx = cctx_get (aTHX);
1160 1377
1161 cctx_put (prev__cctx, prev->gimme); 1378 cctx_put (prev__cctx);
1162 } 1379 }
1163 1380
1164 ++next->usecount; 1381 ++next->usecount;
1165 1382
1166 if (expect_true (!next->cctx)) 1383 if (expect_true (!next->cctx))
1167 next->cctx = cctx_get (aTHX_ next->gimme); 1384 next->cctx = cctx_get (aTHX);
1385
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1387 transfer_next = next;
1168 1388
1169 if (expect_false (prev__cctx != next->cctx)) 1389 if (expect_false (prev__cctx != next->cctx))
1170 { 1390 {
1171 prev__cctx->top_env = PL_top_env; 1391 prev__cctx->top_env = PL_top_env;
1172 PL_top_env = next->cctx->top_env; 1392 PL_top_env = next->cctx->top_env;
1173 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1174 } 1394 }
1175 1395
1176 free_coro_mortal (aTHX); 1396 transfer_tail (aTHX);
1177 UNLOCK;
1178
1179 if (expect_false (prev->throw || next->throw))
1180 {
1181 struct coro *coro = SvSTATE (coro_current);
1182
1183 if (coro->throw)
1184 {
1185 SV *exception = coro->throw;
1186 coro->throw = 0;
1187 sv_setsv (ERRSV, exception);
1188 croak (0);
1189 }
1190 }
1191 } 1397 }
1192} 1398}
1193 1399
1194struct transfer_args
1195{
1196 struct coro *prev, *next;
1197};
1198
1199#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1400#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1200#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1401#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1201 1402
1202/** high level stuff ********************************************************/ 1403/** high level stuff ********************************************************/
1203 1404
1204static int 1405static int
… …
1222 1423
1223 if (coro->mainstack && coro->mainstack != main_mainstack) 1424 if (coro->mainstack && coro->mainstack != main_mainstack)
1224 { 1425 {
1225 struct coro temp; 1426 struct coro temp;
1226 1427
1227 if (coro->flags & CF_RUNNING) 1428 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1228 croak ("FATAL: tried to destroy currently running coroutine");
1229 1429
1230 save_perl (aTHX_ &temp); 1430 save_perl (aTHX_ &temp);
1231 load_perl (aTHX_ coro); 1431 load_perl (aTHX_ coro);
1232 1432
1233 coro_destroy (aTHX_ coro); 1433 coro_destruct (aTHX_ coro);
1234 1434
1235 load_perl (aTHX_ &temp); 1435 load_perl (aTHX_ &temp);
1236 1436
1237 coro->slot = 0; 1437 coro->slot = 0;
1238 } 1438 }
… …
1284# define MGf_DUP 0 1484# define MGf_DUP 0
1285#endif 1485#endif
1286}; 1486};
1287 1487
1288static void 1488static void
1289prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1489prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1290{ 1490{
1291 ta->prev = SvSTATE (prev_sv); 1491 ta->prev = SvSTATE (prev_sv);
1292 ta->next = SvSTATE (next_sv); 1492 ta->next = SvSTATE (next_sv);
1293 TRANSFER_CHECK (*ta); 1493 TRANSFER_CHECK (*ta);
1294} 1494}
1295 1495
1296static void 1496static void
1297api_transfer (SV *prev_sv, SV *next_sv) 1497api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1298{ 1498{
1299 dTHX;
1300 struct transfer_args ta; 1499 struct coro_transfer_args ta;
1301 1500
1302 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1303 TRANSFER (ta); 1502 TRANSFER (ta, 1);
1304} 1503}
1305 1504
1306/** Coro ********************************************************************/ 1505/** Coro ********************************************************************/
1307 1506
1308static void 1507static void
… …
1310{ 1509{
1311 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1312} 1511}
1313 1512
1314static SV * 1513static SV *
1315coro_deq (pTHX_ int min_prio) 1514coro_deq (pTHX)
1316{ 1515{
1317 int prio = PRIO_MAX - PRIO_MIN; 1516 int prio;
1318 1517
1319 min_prio -= PRIO_MIN;
1320 if (min_prio < 0)
1321 min_prio = 0;
1322
1323 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1324 if (AvFILLp (coro_ready [prio]) >= 0) 1519 if (AvFILLp (coro_ready [prio]) >= 0)
1325 return av_shift (coro_ready [prio]); 1520 return av_shift (coro_ready [prio]);
1326 1521
1327 return 0; 1522 return 0;
1328} 1523}
1329 1524
1330static int 1525static int
1331api_ready (SV *coro_sv) 1526api_ready (pTHX_ SV *coro_sv)
1332{ 1527{
1333 dTHX;
1334 struct coro *coro; 1528 struct coro *coro;
1529 SV *sv_hook;
1530 void (*xs_hook)(void);
1335 1531
1336 if (SvROK (coro_sv)) 1532 if (SvROK (coro_sv))
1337 coro_sv = SvRV (coro_sv); 1533 coro_sv = SvRV (coro_sv);
1338 1534
1339 coro = SvSTATE (coro_sv); 1535 coro = SvSTATE (coro_sv);
… …
1342 return 0; 1538 return 0;
1343 1539
1344 coro->flags |= CF_READY; 1540 coro->flags |= CF_READY;
1345 1541
1346 LOCK; 1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546
1347 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1348 ++coro_nready; 1548 ++coro_nready;
1549
1349 UNLOCK; 1550 UNLOCK;
1551
1552 if (sv_hook)
1553 {
1554 dSP;
1555
1556 ENTER;
1557 SAVETMPS;
1558
1559 PUSHMARK (SP);
1560 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD);
1562 SPAGAIN;
1563
1564 FREETMPS;
1565 LEAVE;
1566 }
1567
1568 if (xs_hook)
1569 xs_hook ();
1350 1570
1351 return 1; 1571 return 1;
1352} 1572}
1353 1573
1354static int 1574static int
1355api_is_ready (SV *coro_sv) 1575api_is_ready (pTHX_ SV *coro_sv)
1356{ 1576{
1357 dTHX;
1358 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1577 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1359} 1578}
1360 1579
1361static void 1580INLINE void
1362prepare_schedule (pTHX_ struct transfer_args *ta) 1581prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1363{ 1582{
1364 SV *prev_sv, *next_sv; 1583 SV *prev_sv, *next_sv;
1365 1584
1366 for (;;) 1585 for (;;)
1367 { 1586 {
1368 LOCK; 1587 LOCK;
1369 next_sv = coro_deq (aTHX_ PRIO_MIN); 1588 next_sv = coro_deq (aTHX);
1370 1589
1371 /* nothing to schedule: call the idle handler */ 1590 /* nothing to schedule: call the idle handler */
1372 if (expect_false (!next_sv)) 1591 if (expect_false (!next_sv))
1373 { 1592 {
1374 dSP; 1593 dSP;
… …
1378 SAVETMPS; 1597 SAVETMPS;
1379 1598
1380 PUSHMARK (SP); 1599 PUSHMARK (SP);
1381 PUTBACK; 1600 PUTBACK;
1382 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1602 SPAGAIN;
1383 1603
1384 FREETMPS; 1604 FREETMPS;
1385 LEAVE; 1605 LEAVE;
1386 continue; 1606 continue;
1387 } 1607 }
… …
1391 /* cannot transfer to destroyed coros, skip and look for next */ 1611 /* cannot transfer to destroyed coros, skip and look for next */
1392 if (expect_false (ta->next->flags & CF_DESTROYED)) 1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1393 { 1613 {
1394 UNLOCK; 1614 UNLOCK;
1395 SvREFCNT_dec (next_sv); 1615 SvREFCNT_dec (next_sv);
1396 /* coro_nready is already taken care of by destroy */ 1616 /* coro_nready has already been taken care of by destroy */
1397 continue; 1617 continue;
1398 } 1618 }
1399 1619
1400 --coro_nready; 1620 --coro_nready;
1401 UNLOCK; 1621 UNLOCK;
… …
1404 1624
1405 /* free this only after the transfer */ 1625 /* free this only after the transfer */
1406 prev_sv = SvRV (coro_current); 1626 prev_sv = SvRV (coro_current);
1407 ta->prev = SvSTATE (prev_sv); 1627 ta->prev = SvSTATE (prev_sv);
1408 TRANSFER_CHECK (*ta); 1628 TRANSFER_CHECK (*ta);
1409 assert (ta->next->flags & CF_READY); 1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1410 ta->next->flags &= ~CF_READY; 1630 ta->next->flags &= ~CF_READY;
1411 SvRV_set (coro_current, next_sv); 1631 SvRV_set (coro_current, next_sv);
1412 1632
1413 LOCK; 1633 LOCK;
1414 free_coro_mortal (aTHX); 1634 free_coro_mortal (aTHX);
1415 coro_mortal = prev_sv; 1635 coro_mortal = prev_sv;
1416 UNLOCK; 1636 UNLOCK;
1417} 1637}
1418 1638
1419static void 1639INLINE void
1420prepare_cede (pTHX_ struct transfer_args *ta) 1640prepare_cede (pTHX_ struct coro_transfer_args *ta)
1421{ 1641{
1422 api_ready (coro_current); 1642 api_ready (aTHX_ coro_current);
1423 prepare_schedule (aTHX_ ta); 1643 prepare_schedule (aTHX_ ta);
1424} 1644}
1425 1645
1646INLINE void
1647prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1648{
1649 SV *prev = SvRV (coro_current);
1650
1651 if (coro_nready)
1652 {
1653 prepare_schedule (aTHX_ ta);
1654 api_ready (aTHX_ prev);
1655 }
1656 else
1657 prepare_nop (aTHX_ ta);
1658}
1659
1660static void
1661api_schedule (pTHX)
1662{
1663 struct coro_transfer_args ta;
1664
1665 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1);
1667}
1668
1426static int 1669static int
1427prepare_cede_notself (pTHX_ struct transfer_args *ta) 1670api_cede (pTHX)
1428{ 1671{
1429 if (coro_nready) 1672 struct coro_transfer_args ta;
1430 { 1673
1431 SV *prev = SvRV (coro_current);
1432 prepare_schedule (aTHX_ ta); 1674 prepare_cede (aTHX_ &ta);
1433 api_ready (prev); 1675
1676 if (expect_true (ta.prev != ta.next))
1677 {
1678 TRANSFER (ta, 1);
1434 return 1; 1679 return 1;
1435 } 1680 }
1436 else 1681 else
1437 return 0; 1682 return 0;
1438} 1683}
1439 1684
1440static void
1441api_schedule (void)
1442{
1443 dTHX;
1444 struct transfer_args ta;
1445
1446 prepare_schedule (aTHX_ &ta);
1447 TRANSFER (ta);
1448}
1449
1450static int 1685static int
1451api_cede (void) 1686api_cede_notself (pTHX)
1452{ 1687{
1453 dTHX; 1688 if (coro_nready)
1689 {
1454 struct transfer_args ta; 1690 struct coro_transfer_args ta;
1455 1691
1456 prepare_cede (aTHX_ &ta); 1692 prepare_cede_notself (aTHX_ &ta);
1457
1458 if (expect_true (ta.prev != ta.next))
1459 {
1460 TRANSFER (ta); 1693 TRANSFER (ta, 1);
1461 return 1; 1694 return 1;
1462 } 1695 }
1463 else 1696 else
1464 return 0; 1697 return 0;
1465} 1698}
1466 1699
1467static int 1700static void
1468api_cede_notself (void)
1469{
1470 dTHX;
1471 struct transfer_args ta;
1472
1473 if (prepare_cede_notself (aTHX_ &ta))
1474 {
1475 TRANSFER (ta);
1476 return 1;
1477 }
1478 else
1479 return 0;
1480}
1481
1482static void
1483api_trace (SV *coro_sv, int flags) 1701api_trace (pTHX_ SV *coro_sv, int flags)
1484{ 1702{
1485 dTHX;
1486 struct coro *coro = SvSTATE (coro_sv); 1703 struct coro *coro = SvSTATE (coro_sv);
1487 1704
1488 if (flags & CC_TRACE) 1705 if (flags & CC_TRACE)
1489 { 1706 {
1490 if (!coro->cctx) 1707 if (!coro->cctx)
1491 coro->cctx = cctx_new (); 1708 coro->cctx = cctx_new_run ();
1492 else if (!(coro->cctx->flags & CC_TRACE)) 1709 else if (!(coro->cctx->flags & CC_TRACE))
1493 croak ("cannot enable tracing on coroutine with custom stack"); 1710 croak ("cannot enable tracing on coroutine with custom stack,");
1494 1711
1495 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1496 } 1713 }
1497 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1498 { 1715 {
… …
1503 else 1720 else
1504 coro->slot->runops = RUNOPS_DEFAULT; 1721 coro->slot->runops = RUNOPS_DEFAULT;
1505 } 1722 }
1506} 1723}
1507 1724
1725#if 0
1726static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1728{
1729 AV *padlist;
1730 AV *av = (AV *)mg->mg_obj;
1731
1732 abort ();
1733
1734 return 0;
1735}
1736
1737static MGVTBL coro_gensub_vtbl = {
1738 0, 0, 0, 0,
1739 coro_gensub_free
1740};
1741#endif
1742
1743/*****************************************************************************/
1744/* PerlIO::cede */
1745
1746typedef struct
1747{
1748 PerlIOBuf base;
1749 NV next, every;
1750} PerlIOCede;
1751
1752static IV
1753PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1754{
1755 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1756
1757 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1758 self->next = nvtime () + self->every;
1759
1760 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1761}
1762
1763static SV *
1764PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1765{
1766 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1767
1768 return newSVnv (self->every);
1769}
1770
1771static IV
1772PerlIOCede_flush (pTHX_ PerlIO *f)
1773{
1774 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1775 double now = nvtime ();
1776
1777 if (now >= self->next)
1778 {
1779 api_cede (aTHX);
1780 self->next = now + self->every;
1781 }
1782
1783 return PerlIOBuf_flush (aTHX_ f);
1784}
1785
1786static PerlIO_funcs PerlIO_cede =
1787{
1788 sizeof(PerlIO_funcs),
1789 "cede",
1790 sizeof(PerlIOCede),
1791 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1792 PerlIOCede_pushed,
1793 PerlIOBuf_popped,
1794 PerlIOBuf_open,
1795 PerlIOBase_binmode,
1796 PerlIOCede_getarg,
1797 PerlIOBase_fileno,
1798 PerlIOBuf_dup,
1799 PerlIOBuf_read,
1800 PerlIOBuf_unread,
1801 PerlIOBuf_write,
1802 PerlIOBuf_seek,
1803 PerlIOBuf_tell,
1804 PerlIOBuf_close,
1805 PerlIOCede_flush,
1806 PerlIOBuf_fill,
1807 PerlIOBase_eof,
1808 PerlIOBase_error,
1809 PerlIOBase_clearerr,
1810 PerlIOBase_setlinebuf,
1811 PerlIOBuf_get_base,
1812 PerlIOBuf_bufsiz,
1813 PerlIOBuf_get_ptr,
1814 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt,
1816};
1817
1818/*****************************************************************************/
1819
1820static const CV *slf_cv; /* for quick consistency check */
1821
1822static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1823static SV *slf_arg0;
1824static SV *slf_arg1;
1825static SV *slf_arg2;
1826
1827/* this restores the stack in the case we patched the entersub, to */
1828/* recreate the stack frame as perl will on following calls */
1829/* since entersub cleared the stack */
1830static OP *
1831pp_restore (pTHX)
1832{
1833 dSP;
1834
1835 PUSHMARK (SP);
1836
1837 EXTEND (SP, 3);
1838 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1839 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1840 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1841 PUSHs ((SV *)CvGV (slf_cv));
1842
1843 RETURNOP (slf_restore.op_first);
1844}
1845
1846static void
1847slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1848{
1849 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1850}
1851
1852static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1854{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1856
1857 frame->prepare = slf_prepare_set_stacklevel;
1858 frame->check = slf_check_nop;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861
1862static void
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1864{
1865 SV **arg = (SV **)slf_frame.data;
1866
1867 prepare_transfer (ta, arg [0], arg [1]);
1868}
1869
1870static void
1871slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875
1876 frame->prepare = slf_prepare_transfer;
1877 frame->check = slf_check_nop;
1878 frame->data = (void *)arg; /* let's hope it will stay valid */
1879}
1880
1881static void
1882slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1883{
1884 frame->prepare = prepare_schedule;
1885 frame->check = slf_check_nop;
1886}
1887
1888static void
1889slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1890{
1891 frame->prepare = prepare_cede;
1892 frame->check = slf_check_nop;
1893}
1894
1895static void
1896slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1897{
1898 frame->prepare = prepare_cede_notself;
1899 frame->check = slf_check_nop;
1900}
1901
1902/* we hijack an hopefully unused CV flag for our purposes */
1903#define CVf_SLF 0x4000
1904
1905/*
1906 * these not obviously related functions are all rolled into one
1907 * function to increase chances that they all will call transfer with the same
1908 * stack offset
1909 * SLF stands for "schedule-like-function".
1910 */
1911static OP *
1912pp_slf (pTHX)
1913{
1914 I32 checkmark; /* mark SP to see how many elements check has pushed */
1915
1916 /* set up the slf frame, unless it has already been set-up */
1917 /* the latter happens when a new coro has been started */
1918 /* or when a new cctx was attached to an existing coroutine */
1919 if (expect_true (!slf_frame.prepare))
1920 {
1921 /* first iteration */
1922 dSP;
1923 SV **arg = PL_stack_base + TOPMARK + 1;
1924 int items = SP - arg; /* args without function object */
1925 SV *gv = *sp;
1926
1927 /* do a quick consistency check on the "function" object, and if it isn't */
1928 /* for us, divert to the real entersub */
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1930 return PL_ppaddr[OP_ENTERSUB](aTHX);
1931
1932 /* pop args */
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 {
1937 /* ampersand-form of call, use @_ instead of stack */
1938 AV *av = GvAV (PL_defgv);
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 }
1942
1943 PUTBACK;
1944
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1946 }
1947
1948 /* now interpret the slf_frame */
1949 /* we use a callback system not to make the code needlessly */
1950 /* complicated, but so we can run multiple perl coros from one cctx */
1951
1952 do
1953 {
1954 struct coro_transfer_args ta;
1955
1956 slf_frame.prepare (aTHX_ &ta);
1957 TRANSFER (ta, 0);
1958
1959 checkmark = PL_stack_sp - PL_stack_base;
1960 }
1961 while (slf_frame.check (aTHX_ &slf_frame));
1962
1963 {
1964 dSP;
1965 SV **bot = PL_stack_base + checkmark;
1966 int gimme = GIMME_V;
1967
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1969
1970 /* make sure we put something on the stack in scalar context */
1971 if (gimme == G_SCALAR)
1972 {
1973 if (sp == bot)
1974 XPUSHs (&PL_sv_undef);
1975
1976 SP = bot + 1;
1977 }
1978
1979 PUTBACK;
1980 }
1981
1982 return NORMAL;
1983}
1984
1985static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1987{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1989
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1991 && PL_op->op_ppaddr != pp_slf)
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1993
1994 if (items > 3)
1995 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1996
1997 CvFLAGS (cv) |= CVf_SLF;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1999 slf_cv = cv;
2000
2001 /* we patch the op, and then re-run the whole call */
2002 /* we have to put the same argument on the stack for this to work */
2003 /* and this will be done by pp_restore */
2004 slf_restore.op_next = (OP *)&slf_restore;
2005 slf_restore.op_type = OP_NULL;
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
2012
2013 PL_op->op_ppaddr = pp_slf;
2014
2015 PL_op = (OP *)&slf_restore;
2016}
2017
2018/*****************************************************************************/
2019
2020static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2022{
2023 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0];
2025
2026 if (SvIVX (count_sv) > 0)
2027 {
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2029 return 0;
2030 }
2031 else
2032 {
2033 int i;
2034 /* if we were woken up but can't down, we look through the whole */
2035 /* waiters list and only add us if we aren't in there already */
2036 /* this avoids some degenerate memory usage cases */
2037
2038 for (i = 1; i <= AvFILLp (av); ++i)
2039 if (AvARRAY (av)[i] == SvRV (coro_current))
2040 return 1;
2041
2042 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2043 return 1;
2044 }
2045}
2046
2047static void
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items)
2049{
2050 AV *av = (AV *)SvRV (arg [0]);
2051
2052 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 {
2054 frame->data = (void *)av;
2055 frame->prepare = prepare_nop;
2056 }
2057 else
2058 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule;
2063 }
2064
2065 frame->check = slf_check_semaphore_down;
2066
2067}
2068
1508MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1509 2070
1510PROTOTYPES: DISABLE 2071PROTOTYPES: DISABLE
1511 2072
1512BOOT: 2073BOOT:
1513{ 2074{
1514#ifdef USE_ITHREADS 2075#ifdef USE_ITHREADS
1515 MUTEX_INIT (&coro_mutex); 2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT;
2079# endif
1516#endif 2080#endif
1517 BOOT_PAGESIZE; 2081 BOOT_PAGESIZE;
1518 2082
1519 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2083 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1520 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2084 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1521 2085
2086 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2087 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2088 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2089
1522 hv_sig = coro_get_hv ("SIG", TRUE); 2090 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1523 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 2091 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1524 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 2092 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1525
1526 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1527 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1528 2093
1529 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2094 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1530 2095
1531 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2096 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1532 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2097 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1537 main_top_env = PL_top_env; 2102 main_top_env = PL_top_env;
1538 2103
1539 while (main_top_env->je_prev) 2104 while (main_top_env->je_prev)
1540 main_top_env = main_top_env->je_prev; 2105 main_top_env = main_top_env->je_prev;
1541 2106
1542 coroapi.ver = CORO_API_VERSION; 2107 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION;
2109
1543 coroapi.transfer = api_transfer; 2110 coroapi.transfer = api_transfer;
2111
2112 coroapi.sv_state = SvSTATE_;
2113 coroapi.execute_slf = api_execute_slf;
2114 coroapi.prepare_nop = prepare_nop;
2115 coroapi.prepare_schedule = prepare_schedule;
2116 coroapi.prepare_cede = prepare_cede;
2117 coroapi.prepare_cede_notself = prepare_cede_notself;
2118
2119 {
2120 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2121
2122 if (!svp) croak ("Time::HiRes is required");
2123 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2124
2125 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2126 }
1544 2127
1545 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2128 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1546} 2129}
1547 2130
1548SV * 2131SV *
1549new (char *klass, ...) 2132new (char *klass, ...)
1550 CODE: 2133 CODE:
1551{ 2134{
1552 struct coro *coro; 2135 struct coro *coro;
2136 MAGIC *mg;
1553 HV *hv; 2137 HV *hv;
1554 int i; 2138 int i;
1555 2139
1556 Newz (0, coro, 1, struct coro); 2140 Newz (0, coro, 1, struct coro);
1557 coro->args = newAV (); 2141 coro->args = newAV ();
… …
1560 if (coro_first) coro_first->prev = coro; 2144 if (coro_first) coro_first->prev = coro;
1561 coro->next = coro_first; 2145 coro->next = coro_first;
1562 coro_first = coro; 2146 coro_first = coro;
1563 2147
1564 coro->hv = hv = newHV (); 2148 coro->hv = hv = newHV ();
1565 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2149 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2150 mg->mg_flags |= MGf_DUP;
1566 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1567 2152
1568 av_extend (coro->args, items - 1); 2153 av_extend (coro->args, items - 1);
1569 for (i = 1; i < items; i++) 2154 for (i = 1; i < items; i++)
1570 av_push (coro->args, newSVsv (ST (i))); 2155 av_push (coro->args, newSVsv (ST (i)));
1571} 2156}
1572 OUTPUT: 2157 OUTPUT:
1573 RETVAL 2158 RETVAL
1574 2159
1575# these not obviously related functions are all rolled into the same xs
1576# function to increase chances that they all will call transfer with the same
1577# stack offset
1578void 2160void
1579_set_stacklevel (...) 2161_set_stacklevel (...)
1580 ALIAS: 2162 CODE:
1581 Coro::State::transfer = 1 2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1582 Coro::schedule = 2
1583 Coro::cede = 3
1584 Coro::cede_notself = 4
1585 Coro::Event::next = 5
1586 Coro::Event::next_cancel = 6
1587 PPCODE:
1588{
1589 struct transfer_args ta;
1590 int again = 0;
1591 2164
1592 do 2165void
1593 { 2166transfer (...)
1594 switch (ix) 2167 CODE:
1595 { 2168 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1596 case 0:
1597 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1598 ta.next = 0;
1599 break;
1600
1601 case 1:
1602 if (items != 2)
1603 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1604
1605 prepare_transfer (aTHX_ &ta, ST(0), ST(1));
1606 break;
1607
1608 case 2:
1609 prepare_schedule (aTHX_ &ta);
1610 break;
1611
1612 case 3:
1613 prepare_cede (aTHX_ &ta);
1614 break;
1615
1616 case 4:
1617 if (!prepare_cede_notself (aTHX_ &ta))
1618 XSRETURN_EMPTY;
1619
1620 break;
1621
1622 case 5:
1623 case 6:
1624 if (items != 1)
1625 croak ("Coro::Event::next (watcher) expects one argument, not %d", items);
1626
1627 {
1628 SV *ev = coroapi.coro_event_next (ST (0), ix == 6, GIMME_V != G_VOID);
1629
1630 if (ev)
1631 {
1632 if (GIMME_V != G_VOID)
1633 {
1634 XPUSHs (ev);
1635 XSRETURN (1);
1636 }
1637 else
1638 XSRETURN_EMPTY;
1639 }
1640 }
1641
1642 prepare_schedule (aTHX_ &ta);
1643 again = 1;
1644 break;
1645 }
1646
1647 /* our caller, entersub, caches *only* this value */
1648 ta.prev->gimme = GIMME_V == G_VOID ? 0
1649 : GIMME_V == G_SCALAR ? 1
1650 : 2;
1651
1652 /* we need to save all local variables, as we might execute a different coroutine when transfer returns */
1653 sp += 2; /* save args */
1654 EXTEND (SP, 4);
1655 PUSHs ((SV *)(intptr_t)items);
1656 PUSHs ((SV *)(intptr_t)ix);
1657 PUSHs ((SV *)(intptr_t)ax);
1658 PUSHs ((SV *)(intptr_t)again);
1659 PUTBACK;
1660 BARRIER;
1661 TRANSFER (ta);
1662 BARRIER;
1663 SPAGAIN;
1664 again = (intptr_t)POPs;
1665 ax = (intptr_t)POPs;
1666 ix = (intptr_t)POPs;
1667 items = (intptr_t)POPs;
1668 sp -= 2; /* restore args */
1669 }
1670 while (again);
1671
1672 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1673 XSRETURN_YES;
1674
1675 XSRETURN_EMPTY; /* not understood why this is necessary, likely some stack handling bug */
1676}
1677 2169
1678bool 2170bool
1679_destroy (SV *coro_sv) 2171_destroy (SV *coro_sv)
1680 CODE: 2172 CODE:
1681 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2173 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1682 OUTPUT: 2174 OUTPUT:
1683 RETVAL 2175 RETVAL
1684 2176
1685void 2177void
1686_exit (code) 2178_exit (int code)
1687 int code
1688 PROTOTYPE: $ 2179 PROTOTYPE: $
1689 CODE: 2180 CODE:
1690 _exit (code); 2181 _exit (code);
1691 2182
1692int 2183int
1693cctx_stacksize (int new_stacksize = 0) 2184cctx_stacksize (int new_stacksize = 0)
2185 PROTOTYPE: ;$
1694 CODE: 2186 CODE:
1695 RETVAL = coro_stacksize; 2187 RETVAL = cctx_stacksize;
1696 if (new_stacksize) 2188 if (new_stacksize)
2189 {
1697 coro_stacksize = new_stacksize; 2190 cctx_stacksize = new_stacksize;
2191 ++cctx_gen;
2192 }
1698 OUTPUT: 2193 OUTPUT:
1699 RETVAL 2194 RETVAL
1700 2195
1701int 2196int
2197cctx_max_idle (int max_idle = 0)
2198 PROTOTYPE: ;$
2199 CODE:
2200 RETVAL = cctx_max_idle;
2201 if (max_idle > 1)
2202 cctx_max_idle = max_idle;
2203 OUTPUT:
2204 RETVAL
2205
2206int
1702cctx_count () 2207cctx_count ()
2208 PROTOTYPE:
1703 CODE: 2209 CODE:
1704 RETVAL = cctx_count; 2210 RETVAL = cctx_count;
1705 OUTPUT: 2211 OUTPUT:
1706 RETVAL 2212 RETVAL
1707 2213
1708int 2214int
1709cctx_idle () 2215cctx_idle ()
2216 PROTOTYPE:
1710 CODE: 2217 CODE:
1711 RETVAL = cctx_idle[0] + cctx_idle[1] + cctx_idle[2]; 2218 RETVAL = cctx_idle;
1712 OUTPUT: 2219 OUTPUT:
1713 RETVAL 2220 RETVAL
1714 2221
1715void 2222void
1716list () 2223list ()
2224 PROTOTYPE:
1717 PPCODE: 2225 PPCODE:
1718{ 2226{
1719 struct coro *coro; 2227 struct coro *coro;
1720 for (coro = coro_first; coro; coro = coro->next) 2228 for (coro = coro_first; coro; coro = coro->next)
1721 if (coro->hv) 2229 if (coro->hv)
… …
1726call (Coro::State coro, SV *coderef) 2234call (Coro::State coro, SV *coderef)
1727 ALIAS: 2235 ALIAS:
1728 eval = 1 2236 eval = 1
1729 CODE: 2237 CODE:
1730{ 2238{
1731 if (coro->mainstack) 2239 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1732 { 2240 {
1733 struct coro temp; 2241 struct coro temp;
1734 2242
1735 if (!(coro->flags & CF_RUNNING)) 2243 if (!(coro->flags & CF_RUNNING))
1736 { 2244 {
2245 PUTBACK;
1737 save_perl (aTHX_ &temp); 2246 save_perl (aTHX_ &temp);
1738 load_perl (aTHX_ coro); 2247 load_perl (aTHX_ coro);
1739 } 2248 }
1740 2249
1741 { 2250 {
… …
1750 eval_sv (coderef, 0); 2259 eval_sv (coderef, 0);
1751 else 2260 else
1752 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2261 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1753 2262
1754 POPSTACK; 2263 POPSTACK;
2264 SPAGAIN;
1755 FREETMPS; 2265 FREETMPS;
1756 LEAVE; 2266 LEAVE;
2267 PUTBACK;
1757 } 2268 }
1758 2269
1759 if (!(coro->flags & CF_RUNNING)) 2270 if (!(coro->flags & CF_RUNNING))
1760 { 2271 {
1761 save_perl (aTHX_ coro); 2272 save_perl (aTHX_ coro);
1762 load_perl (aTHX_ &temp); 2273 load_perl (aTHX_ &temp);
2274 SPAGAIN;
1763 } 2275 }
1764 } 2276 }
1765} 2277}
1766 2278
1767SV * 2279SV *
… …
1776 RETVAL = boolSV (coro->flags & ix); 2288 RETVAL = boolSV (coro->flags & ix);
1777 OUTPUT: 2289 OUTPUT:
1778 RETVAL 2290 RETVAL
1779 2291
1780void 2292void
2293throw (Coro::State self, SV *throw = &PL_sv_undef)
2294 PROTOTYPE: $;$
2295 CODE:
2296 SvREFCNT_dec (self->throw);
2297 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2298
2299void
1781api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2300api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2301 PROTOTYPE: $;$
2302 C_ARGS: aTHX_ coro, flags
1782 2303
1783SV * 2304SV *
1784has_stack (Coro::State coro) 2305has_cctx (Coro::State coro)
1785 PROTOTYPE: $ 2306 PROTOTYPE: $
1786 CODE: 2307 CODE:
1787 RETVAL = boolSV (!!coro->cctx); 2308 RETVAL = boolSV (!!coro->cctx);
1788 OUTPUT: 2309 OUTPUT:
1789 RETVAL 2310 RETVAL
… …
1794 CODE: 2315 CODE:
1795 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2316 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1796 OUTPUT: 2317 OUTPUT:
1797 RETVAL 2318 RETVAL
1798 2319
1799IV 2320UV
1800rss (Coro::State coro) 2321rss (Coro::State coro)
1801 PROTOTYPE: $ 2322 PROTOTYPE: $
1802 ALIAS: 2323 ALIAS:
1803 usecount = 1 2324 usecount = 1
1804 CODE: 2325 CODE:
… …
1808 case 1: RETVAL = coro->usecount; break; 2329 case 1: RETVAL = coro->usecount; break;
1809 } 2330 }
1810 OUTPUT: 2331 OUTPUT:
1811 RETVAL 2332 RETVAL
1812 2333
2334void
2335force_cctx ()
2336 PROTOTYPE:
2337 CODE:
2338 struct coro *coro = SvSTATE (coro_current);
2339 coro->cctx->idle_sp = 0;
2340
2341void
2342swap_defsv (Coro::State self)
2343 PROTOTYPE: $
2344 ALIAS:
2345 swap_defav = 1
2346 CODE:
2347 if (!self->slot)
2348 croak ("cannot swap state with coroutine that has no saved state,");
2349 else
2350 {
2351 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2352 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2353
2354 SV *tmp = *src; *src = *dst; *dst = tmp;
2355 }
1813 2356
1814MODULE = Coro::State PACKAGE = Coro 2357MODULE = Coro::State PACKAGE = Coro
1815 2358
1816BOOT: 2359BOOT:
1817{ 2360{
1818 int i; 2361 int i;
1819 2362
1820 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1821 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1822 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 2363 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2364 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2365 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1823 2366
1824 coro_current = coro_get_sv ("Coro::current", FALSE); 2367 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1825 SvREADONLY_on (coro_current); 2368 SvREADONLY_on (coro_current);
1826 2369
1827 coro_stash = gv_stashpv ("Coro", TRUE); 2370 coro_stash = gv_stashpv ("Coro", TRUE);
1828 2371
1829 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2372 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
1835 2378
1836 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2379 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1837 coro_ready[i] = newAV (); 2380 coro_ready[i] = newAV ();
1838 2381
1839 { 2382 {
1840 SV *sv = perl_get_sv ("Coro::API", TRUE); 2383 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1841 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1842 2384
1843 coroapi.schedule = api_schedule; 2385 coroapi.schedule = api_schedule;
1844 coroapi.cede = api_cede; 2386 coroapi.cede = api_cede;
1845 coroapi.cede_notself = api_cede_notself; 2387 coroapi.cede_notself = api_cede_notself;
1846 coroapi.ready = api_ready; 2388 coroapi.ready = api_ready;
1847 coroapi.is_ready = api_is_ready; 2389 coroapi.is_ready = api_is_ready;
1848 coroapi.nready = &coro_nready; 2390 coroapi.nready = coro_nready;
1849 coroapi.current = coro_current; 2391 coroapi.current = coro_current;
1850 2392
1851 GCoroAPI = &coroapi; 2393 GCoroAPI = &coroapi;
1852 sv_setiv (sv, (IV)&coroapi); 2394 sv_setiv (sv, (IV)&coroapi);
1853 SvREADONLY_on (sv); 2395 SvREADONLY_on (sv);
1854 } 2396 }
1855} 2397}
2398
2399void
2400schedule (...)
2401 CODE:
2402 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items);
2403
2404void
2405cede (...)
2406 CODE:
2407 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items);
2408
2409void
2410cede_notself (...)
2411 CODE:
2412 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items);
1856 2413
1857void 2414void
1858_set_current (SV *current) 2415_set_current (SV *current)
1859 PROTOTYPE: $ 2416 PROTOTYPE: $
1860 CODE: 2417 CODE:
1861 SvREFCNT_dec (SvRV (coro_current)); 2418 SvREFCNT_dec (SvRV (coro_current));
1862 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2419 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2420
2421void
2422_set_readyhook (SV *hook)
2423 PROTOTYPE: $
2424 CODE:
2425 LOCK;
2426 SvREFCNT_dec (coro_readyhook);
2427 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2428 UNLOCK;
1863 2429
1864int 2430int
1865prio (Coro::State coro, int newprio = 0) 2431prio (Coro::State coro, int newprio = 0)
2432 PROTOTYPE: $;$
1866 ALIAS: 2433 ALIAS:
1867 nice = 1 2434 nice = 1
1868 CODE: 2435 CODE:
1869{ 2436{
1870 RETVAL = coro->prio; 2437 RETVAL = coro->prio;
… …
1885 2452
1886SV * 2453SV *
1887ready (SV *self) 2454ready (SV *self)
1888 PROTOTYPE: $ 2455 PROTOTYPE: $
1889 CODE: 2456 CODE:
1890 RETVAL = boolSV (api_ready (self)); 2457 RETVAL = boolSV (api_ready (aTHX_ self));
1891 OUTPUT: 2458 OUTPUT:
1892 RETVAL 2459 RETVAL
1893 2460
1894int 2461int
1895nready (...) 2462nready (...)
… …
1897 CODE: 2464 CODE:
1898 RETVAL = coro_nready; 2465 RETVAL = coro_nready;
1899 OUTPUT: 2466 OUTPUT:
1900 RETVAL 2467 RETVAL
1901 2468
1902void
1903throw (Coro::State self, SV *throw = &PL_sv_undef)
1904 PROTOTYPE: $;$
1905 CODE:
1906 SvREFCNT_dec (self->throw);
1907 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1908
1909# for async_pool speedup 2469# for async_pool speedup
1910void 2470void
1911_pool_1 (SV *cb) 2471_pool_1 (SV *cb)
1912 CODE: 2472 CODE:
1913{ 2473{
1914 struct coro *coro = SvSTATE (coro_current); 2474 struct coro *coro = SvSTATE (coro_current);
1915 HV *hv = (HV *)SvRV (coro_current); 2475 HV *hv = (HV *)SvRV (coro_current);
1916 AV *defav = GvAV (PL_defgv); 2476 AV *defav = GvAV (PL_defgv);
1917 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0); 2477 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1918 AV *invoke_av; 2478 AV *invoke_av;
1919 int i, len; 2479 int i, len;
1920 2480
1921 if (!invoke) 2481 if (!invoke)
2482 {
2483 SV *old = PL_diehook;
2484 PL_diehook = 0;
2485 SvREFCNT_dec (old);
1922 croak ("\3async_pool terminate\2\n"); 2486 croak ("\3async_pool terminate\2\n");
2487 }
1923 2488
1924 SvREFCNT_dec (coro->saved_deffh); 2489 SvREFCNT_dec (coro->saved_deffh);
1925 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2490 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1926 2491
1927 hv_store (hv, "desc", sizeof ("desc") - 1, 2492 hv_store (hv, "desc", sizeof ("desc") - 1,
1928 newSVpvn (strpair ("[async_pool]")), 0); 2493 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1929 2494
1930 invoke_av = (AV *)SvRV (invoke); 2495 invoke_av = (AV *)SvRV (invoke);
1931 len = av_len (invoke_av); 2496 len = av_len (invoke_av);
1932 2497
1933 sv_setsv (cb, AvARRAY (invoke_av)[0]); 2498 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1934 2499
1935 if (len > 0) 2500 if (len > 0)
1936 { 2501 {
1937 av_fill (defav, len - 1); 2502 av_fill (defav, len - 1);
1938 for (i = 0; i < len; ++i) 2503 for (i = 0; i < len; ++i)
1939 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2504 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1940 } 2505 }
1941
1942 SvREFCNT_dec (invoke);
1943} 2506}
1944 2507
1945void 2508void
1946_pool_2 (SV *cb) 2509_pool_2 (SV *cb)
1947 CODE: 2510 CODE:
… …
1951 sv_setsv (cb, &PL_sv_undef); 2514 sv_setsv (cb, &PL_sv_undef);
1952 2515
1953 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2516 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1954 coro->saved_deffh = 0; 2517 coro->saved_deffh = 0;
1955 2518
1956 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2519 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1957 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2520 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2521 {
2522 SV *old = PL_diehook;
2523 PL_diehook = 0;
2524 SvREFCNT_dec (old);
1958 croak ("\3async_pool terminate\2\n"); 2525 croak ("\3async_pool terminate\2\n");
2526 }
1959 2527
1960 av_clear (GvAV (PL_defgv)); 2528 av_clear (GvAV (PL_defgv));
1961 hv_store ((HV *)SvRV (coro_current), strpair ("desc"), 2529 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1962 newSVpvn (strpair ("[async_pool idle]")), 0); 2530 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1963 2531
1964 coro->prio = 0; 2532 coro->prio = 0;
1965 2533
1966 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2534 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1967 api_trace (coro_current, 0); 2535 api_trace (aTHX_ coro_current, 0);
1968 2536
1969 av_push (av_async_pool, newSVsv (coro_current)); 2537 av_push (av_async_pool, newSVsv (coro_current));
1970} 2538}
1971 2539
2540#if 0
2541
2542void
2543_generator_call (...)
2544 PROTOTYPE: @
2545 PPCODE:
2546 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2547 xxxx
2548 abort ();
2549
2550SV *
2551gensub (SV *sub, ...)
2552 PROTOTYPE: &;@
2553 CODE:
2554{
2555 struct coro *coro;
2556 MAGIC *mg;
2557 CV *xcv;
2558 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2559 int i;
2560
2561 CvGV (ncv) = CvGV (cv);
2562 CvFILE (ncv) = CvFILE (cv);
2563
2564 Newz (0, coro, 1, struct coro);
2565 coro->args = newAV ();
2566 coro->flags = CF_NEW;
2567
2568 av_extend (coro->args, items - 1);
2569 for (i = 1; i < items; i++)
2570 av_push (coro->args, newSVsv (ST (i)));
2571
2572 CvISXSUB_on (ncv);
2573 CvXSUBANY (ncv).any_ptr = (void *)coro;
2574
2575 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2576
2577 CvXSUB (ncv) = CvXSUB (xcv);
2578 CvANON_on (ncv);
2579
2580 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2581 RETVAL = newRV_noinc ((SV *)ncv);
2582}
2583 OUTPUT:
2584 RETVAL
2585
2586#endif
2587
1972 2588
1973MODULE = Coro::State PACKAGE = Coro::AIO 2589MODULE = Coro::State PACKAGE = Coro::AIO
1974 2590
1975SV * 2591void
1976_get_state () 2592_get_state (SV *self)
2593 PROTOTYPE: $
1977 CODE: 2594 PPCODE:
1978{ 2595{
1979 struct io_state *data; 2596 AV *defav = GvAV (PL_defgv);
1980 2597 AV *av = newAV ();
2598 int i;
1981 RETVAL = newSV (sizeof (struct io_state)); 2599 SV *data_sv = newSV (sizeof (struct io_state));
1982 data = (struct io_state *)SvPVX (RETVAL); 2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1983 SvCUR_set (RETVAL, sizeof (struct io_state)); 2601 SvCUR_set (data_sv, sizeof (struct io_state));
1984 SvPOK_only (RETVAL); 2602 SvPOK_only (data_sv);
1985 2603
1986 data->errorno = errno; 2604 data->errorno = errno;
1987 data->laststype = PL_laststype; 2605 data->laststype = PL_laststype;
1988 data->laststatval = PL_laststatval; 2606 data->laststatval = PL_laststatval;
1989 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);
1990} 2619}
1991 OUTPUT:
1992 RETVAL
1993 2620
1994void 2621void
1995_set_state (char *data_) 2622_set_state (SV *state)
1996 PROTOTYPE: $ 2623 PROTOTYPE: $
1997 CODE: 2624 PPCODE:
1998{ 2625{
1999 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;
2000 2629
2001 errno = data->errorno; 2630 errno = data->errorno;
2002 PL_laststype = data->laststype; 2631 PL_laststype = data->laststype;
2003 PL_laststatval = data->laststatval; 2632 PL_laststatval = data->laststatval;
2004 PL_statcache = data->statcache; 2633 PL_statcache = data->statcache;
2005}
2006 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
2646SV *
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{
2703 AV *av = (AV *)SvRV (self);
2704 SV *count_sv = AvARRAY (av)[0];
2705 IV count = SvIVX (count_sv);
2706
2707 count += ix ? adjust : 1;
2708 SvIVX (count_sv) = count;
2709
2710 /* now wake up as many waiters as possible */
2711 while (count > 0 && AvFILLp (av) >= count)
2712 {
2713 SV *cb;
2714
2715 /* swap first two elements so we can shift a waiter */
2716 AvARRAY (av)[0] = AvARRAY (av)[1];
2717 AvARRAY (av)[1] = count_sv;
2718 cb = av_shift (av);
2719
2720 if (SvOBJECT (cb))
2721 api_ready (cb);
2722 else
2723 croak ("callbacks not yet supported");
2724
2725 SvREFCNT_dec (cb);
2726 }
2727}
2728
2729void
2730down (SV *self)
2731 CODE:
2732 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), items);
2733
2734void
2735try (SV *self)
2736 PPCODE:
2737{
2738 AV *av = (AV *)SvRV (self);
2739 SV *count_sv = AvARRAY (av)[0];
2740 IV count = SvIVX (count_sv);
2741
2742 if (count > 0)
2743 {
2744 --count;
2745 SvIVX (count_sv) = count;
2746 XSRETURN_YES;
2747 }
2748 else
2749 XSRETURN_NO;
2750}
2751
2752void
2753waiters (SV *self)
2754 CODE:
2755{
2756 AV *av = (AV *)SvRV (self);
2757
2758 if (GIMME_V == G_SCALAR)
2759 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2760 else
2761 {
2762 int i;
2763 EXTEND (SP, AvFILLp (av) + 1 - 1);
2764 for (i = 1; i <= AvFILLp (av); ++i)
2765 PUSHs (newSVsv (AvARRAY (av)[i]));
2766 }
2767}
2768

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