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Comparing Coro/Coro/State.xs (file contents):
Revision 1.198 by root, Sun Oct 7 03:58:37 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
23# include <inttypes.h> /* most portable stdint.h */
24#endif
15 25
16#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
17# include <unistd.h> 27# include <unistd.h>
18# include <sys/mman.h> 28# include <sys/mman.h>
19# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
36# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
37#endif 47#endif
38 48
39#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
40# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
41# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
42#else
43# define REGISTER_STACK(cctx,start,end)
44#endif 51#endif
45 52
46/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
47#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
48 55
49#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
50 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
51 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
52 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
71# ifndef IS_PADCONST 78# ifndef IS_PADCONST
72# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
73# endif 80# endif
74#endif 81#endif
75 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
76/* 5.8.7 */ 101/* 5.8.7 */
77#ifndef SvRV_set 102#ifndef SvRV_set
78# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
79#endif 104#endif
80 105
81/* 5.8.8 */
82#ifndef GV_NOTQUAL
83# define GV_NOTQUAL 0
84#endif
85#ifndef newSV
86# define newSV(l) NEWSV(0,l)
87#endif
88
89#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
90# undef CORO_STACKGUARD 107# undef CORO_STACKGUARD
91#endif 108#endif
92 109
93#ifndef CORO_STACKGUARD 110#ifndef CORO_STACKGUARD
… …
99# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
100#endif 117#endif
101 118
102/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
103 * portable way as possible. */ 120 * portable way as possible. */
104#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
105#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
106 126
107#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
108 128
109#if __GNUC__ >= 3 129#if __GNUC__ >= 3
110# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
111# define BARRIER __asm__ __volatile__ ("" : : : "memory")
112# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
113#else 133#else
114# define attribute(x) 134# define attribute(x)
115# define BARRIER
116# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
117#endif 137#endif
118 138
119#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
120#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
121 141
122#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
123 143
124#include "CoroAPI.h" 144#include "CoroAPI.h"
125 145
126#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
147
127static perl_mutex coro_mutex; 148static perl_mutex coro_lock;
128# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
129# 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
130#else 155#else
156
131# define LOCK (void)0 157# define LOCK (void)0
132# define UNLOCK (void)0 158# define UNLOCK (void)0
159
133#endif 160#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
134 166
135/* helper storage struct for Coro::AIO */ 167/* helper storage struct for Coro::AIO */
136struct io_state 168struct io_state
137{ 169{
170 AV *res;
138 int errorno; 171 int errorno;
139 I32 laststype; 172 I32 laststype; /* U16 in 5.10.0 */
140 int laststatval; 173 int laststatval;
141 Stat_t statcache; 174 Stat_t statcache;
142}; 175};
143 176
177static double (*nvtime)(); /* so why doesn't it take void? */
178
179static U32 cctx_gen;
144static size_t coro_stacksize = CORO_STACKSIZE; 180static size_t cctx_stacksize = CORO_STACKSIZE;
145static struct CoroAPI coroapi; 181static struct CoroAPI coroapi;
146static AV *main_mainstack; /* used to differentiate between $main and others */ 182static AV *main_mainstack; /* used to differentiate between $main and others */
147static JMPENV *main_top_env; 183static JMPENV *main_top_env;
148static HV *coro_state_stash, *coro_stash; 184static HV *coro_state_stash, *coro_stash;
149static 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;
150 187
151static GV *irsgv; /* $/ */ 188static GV *irsgv; /* $/ */
152static GV *stdoutgv; /* *STDOUT */ 189static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook;
191static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */
153 193
154/* async_pool helper stuff */ 194/* async_pool helper stuff */
155static SV *sv_pool_rss; 195static SV *sv_pool_rss;
156static SV *sv_pool_size; 196static SV *sv_pool_size;
157static AV *av_async_pool; 197static AV *av_async_pool;
198
199/* Coro::AnyEvent */
200static SV *sv_activity;
158 201
159static struct coro_cctx *cctx_first; 202static struct coro_cctx *cctx_first;
160static int cctx_count, cctx_idle; 203static int cctx_count, cctx_idle;
161 204
162enum { 205enum {
… …
167 CC_TRACE_LINE = 0x10, /* trace each statement */ 210 CC_TRACE_LINE = 0x10, /* trace each statement */
168 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 211 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
169}; 212};
170 213
171/* this is a structure representing a c-level coroutine */ 214/* this is a structure representing a c-level coroutine */
172typedef struct coro_cctx { 215typedef struct coro_cctx
216{
173 struct coro_cctx *next; 217 struct coro_cctx *next;
174 218
175 /* the stack */ 219 /* the stack */
176 void *sptr; 220 void *sptr;
177 size_t ssize; 221 size_t ssize;
… …
180 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 224 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
181 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 */
182 JMPENV *top_env; 226 JMPENV *top_env;
183 coro_context cctx; 227 coro_context cctx;
184 228
229 U32 gen;
185#if CORO_USE_VALGRIND 230#if CORO_USE_VALGRIND
186 int valgrind_id; 231 int valgrind_id;
187#endif 232#endif
188 unsigned char flags; 233 unsigned char flags;
189} coro_cctx; 234} coro_cctx;
… …
194 CF_NEW = 0x0004, /* has never been switched to */ 239 CF_NEW = 0x0004, /* has never been switched to */
195 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
196}; 241};
197 242
198/* 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 */
199typedef struct { 244typedef struct
245{
200 SV *defsv; 246 SV *defsv;
201 AV *defav; 247 AV *defav;
202 SV *errsv; 248 SV *errsv;
203 SV *irsgv; 249 SV *irsgv;
204#define VAR(name,type) type name; 250#define VAR(name,type) type name;
… …
208 254
209#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))
210 256
211/* this is a structure representing a perl-level coroutine */ 257/* this is a structure representing a perl-level coroutine */
212struct coro { 258struct coro {
213 /* the c coroutine allocated to this perl coroutine, if any */ 259 /* the C coroutine allocated to this perl coroutine, if any */
214 coro_cctx *cctx; 260 coro_cctx *cctx;
215 261
216 /* process data */ 262 /* process data */
263 struct CoroSLF slf_frame; /* saved slf frame */
217 AV *mainstack; 264 AV *mainstack;
218 perl_slots *slot; /* basically the saved sp */ 265 perl_slots *slot; /* basically the saved sp */
219 266
220 /* data associated with this coroutine (initial args) */ 267 AV *args; /* data associated with this coroutine (initial args) */
221 AV *args; 268 int refcnt; /* coroutines are refcounted, yes */
222 int refcnt;
223 int flags; /* CF_ flags */ 269 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */
224 271
225 /* statistics */ 272 /* statistics */
226 int usecount; /* number of transfers to this coro */ 273 int usecount; /* number of transfers to this coro */
227 274
228 /* coro process data */ 275 /* coro process data */
229 int prio; 276 int prio;
230 SV *throw; 277 SV *throw; /* exception to be thrown */
231 278
232 /* async_pool */ 279 /* async_pool */
233 SV *saved_deffh; 280 SV *saved_deffh;
234 281
235 /* linked list */ 282 /* linked list */
236 struct coro *next, *prev; 283 struct coro *next, *prev;
237 HV *hv; /* the perl hash associated with this coro, if any */
238}; 284};
239 285
240typedef struct coro *Coro__State; 286typedef struct coro *Coro__State;
241typedef struct coro *Coro__State_or_hashref; 287typedef struct coro *Coro__State_or_hashref;
288
289static struct CoroSLF slf_frame; /* the current slf frame */
242 290
243/** Coro ********************************************************************/ 291/** Coro ********************************************************************/
244 292
245#define PRIO_MAX 3 293#define PRIO_MAX 3
246#define PRIO_HIGH 1 294#define PRIO_HIGH 1
… …
249#define PRIO_IDLE -3 297#define PRIO_IDLE -3
250#define PRIO_MIN -4 298#define PRIO_MIN -4
251 299
252/* for Coro.pm */ 300/* for Coro.pm */
253static SV *coro_current; 301static SV *coro_current;
302static SV *coro_readyhook;
254static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
255static int coro_nready;
256static struct coro *coro_first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
257 306
258/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
308
309static SV *
310coro_get_sv (pTHX_ const char *name, int create)
311{
312#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_sv (name, create);
315#endif
316 return get_sv (name, create);
317}
318
319static AV *
320coro_get_av (pTHX_ const char *name, int create)
321{
322#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_av (name, create);
325#endif
326 return get_av (name, create);
327}
328
329static HV *
330coro_get_hv (pTHX_ const char *name, int create)
331{
332#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create);
335#endif
336 return get_hv (name, create);
337}
259 338
260static AV * 339static AV *
261coro_clone_padlist (pTHX_ CV *cv) 340coro_clone_padlist (pTHX_ CV *cv)
262{ 341{
263 AV *padlist = CvPADLIST (cv); 342 AV *padlist = CvPADLIST (cv);
264 AV *newpadlist, *newpad; 343 AV *newpadlist, *newpad;
265 344
266 newpadlist = newAV (); 345 newpadlist = newAV ();
267 AvREAL_off (newpadlist); 346 AvREAL_off (newpadlist);
268#if PERL_VERSION_ATLEAST (5,9,0) 347#if PERL_VERSION_ATLEAST (5,10,0)
269 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
270#else 349#else
271 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
272#endif 351#endif
273 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
274 --AvFILLp (padlist); 353 --AvFILLp (padlist);
275 354
276 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
277 av_store (newpadlist, 1, (SV *)newpad); 356 av_store (newpadlist, 1, (SV *)newpad);
278 357
279 return newpadlist; 358 return newpadlist;
280} 359}
281 360
… …
311 390
312 /* casting is fun. */ 391 /* casting is fun. */
313 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
314 free_padlist (aTHX_ padlist); 393 free_padlist (aTHX_ padlist);
315 394
316 SvREFCNT_dec (av); 395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
317 396
318 return 0; 397 return 0;
319} 398}
320 399
321#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
322 402
323static 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};
324 407
325#define CORO_MAGIC(cv) \ 408#define CORO_MAGIC(sv, type) \
326 SvMAGIC (cv) \ 409 SvMAGIC (sv) \
327 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 410 ? SvMAGIC (sv)->mg_type == type \
328 ? SvMAGIC (cv) \ 411 ? SvMAGIC (sv) \
329 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 412 : mg_find (sv, type) \
330 : 0 413 : 0
331 414
332static 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 *
333SvSTATE_ (pTHX_ SV *coro) 419SvSTATE_ (pTHX_ SV *coro)
334{ 420{
335 HV *stash; 421 HV *stash;
336 MAGIC *mg; 422 MAGIC *mg;
337 423
… …
347 /* very slow, but rare, check */ 433 /* very slow, but rare, check */
348 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
349 croak ("Coro::State object required"); 435 croak ("Coro::State object required");
350 } 436 }
351 437
352 mg = CORO_MAGIC (coro); 438 mg = CORO_MAGIC_state (coro);
353 return (struct coro *)mg->mg_ptr; 439 return (struct coro *)mg->mg_ptr;
354} 440}
355 441
356#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
357 443
358/* the next two functions merely cache the padlists */ 444/* the next two functions merely cache the padlists */
359static void 445static void
360get_padlist (pTHX_ CV *cv) 446get_padlist (pTHX_ CV *cv)
361{ 447{
362 MAGIC *mg = CORO_MAGIC (cv); 448 MAGIC *mg = CORO_MAGIC_cv (cv);
363 AV *av; 449 AV *av;
364 450
365 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
366 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
367 else 453 else
368 { 454 {
369#if CORO_PREFER_PERL_FUNCTIONS 455#if CORO_PREFER_PERL_FUNCTIONS
370 /* this is probably cleaner, but also slower? */ 456 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */
371 CV *cp = Perl_cv_clone (cv); 458 CV *cp = Perl_cv_clone (cv);
372 CvPADLIST (cv) = CvPADLIST (cp); 459 CvPADLIST (cv) = CvPADLIST (cp);
373 CvPADLIST (cp) = 0; 460 CvPADLIST (cp) = 0;
374 SvREFCNT_dec (cp); 461 SvREFCNT_dec (cp);
375#else 462#else
… …
379} 466}
380 467
381static void 468static void
382put_padlist (pTHX_ CV *cv) 469put_padlist (pTHX_ CV *cv)
383{ 470{
384 MAGIC *mg = CORO_MAGIC (cv); 471 MAGIC *mg = CORO_MAGIC_cv (cv);
385 AV *av; 472 AV *av;
386 473
387 if (expect_false (!mg)) 474 if (expect_false (!mg))
388 { 475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
389 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
390 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
391 mg->mg_virtual = &vtbl_coro;
392 mg->mg_obj = (SV *)newAV ();
393 }
394 476
395 av = (AV *)mg->mg_obj; 477 av = (AV *)mg->mg_obj;
396 478
397 if (expect_false (AvFILLp (av) >= AvMAX (av))) 479 if (expect_false (AvFILLp (av) >= AvMAX (av)))
398 av_extend (av, AvMAX (av) + 1); 480 av_extend (av, AvMAX (av) + 1);
… …
432 CvPADLIST (cv) = (AV *)POPs; 514 CvPADLIST (cv) = (AV *)POPs;
433 } 515 }
434 516
435 PUTBACK; 517 PUTBACK;
436 } 518 }
519
520 slf_frame = c->slf_frame;
437} 521}
438 522
439static void 523static void
440save_perl (pTHX_ Coro__State c) 524save_perl (pTHX_ Coro__State c)
441{ 525{
526 c->slf_frame = slf_frame;
527
442 { 528 {
443 dSP; 529 dSP;
444 I32 cxix = cxstack_ix; 530 I32 cxix = cxstack_ix;
445 PERL_CONTEXT *ccstk = cxstack; 531 PERL_CONTEXT *ccstk = cxstack;
446 PERL_SI *top_si = PL_curstackinfo; 532 PERL_SI *top_si = PL_curstackinfo;
… …
464 550
465 if (expect_true (CvDEPTH (cv))) 551 if (expect_true (CvDEPTH (cv)))
466 { 552 {
467 EXTEND (SP, 3); 553 EXTEND (SP, 3);
468 PUSHs ((SV *)CvPADLIST (cv)); 554 PUSHs ((SV *)CvPADLIST (cv));
469 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 555 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
470 PUSHs ((SV *)cv); 556 PUSHs ((SV *)cv);
471 557
472 CvDEPTH (cv) = 0; 558 CvDEPTH (cv) = 0;
473 get_padlist (aTHX_ cv); 559 get_padlist (aTHX_ cv);
474 } 560 }
… …
485 571
486 PUTBACK; 572 PUTBACK;
487 } 573 }
488 574
489 /* allocate some space on the context stack for our purposes */ 575 /* allocate some space on the context stack for our purposes */
576 /* we manually unroll here, as usually 2 slots is enough */
577 if (SLOT_COUNT >= 1) CXINC;
578 if (SLOT_COUNT >= 2) CXINC;
579 if (SLOT_COUNT >= 3) CXINC;
490 { 580 {
491 /* we manually unroll here, as usually 2 slots is enough */
492 int i; 581 int i;
493 if (SLOT_COUNT >= 1) CXINC;
494 if (SLOT_COUNT >= 2) CXINC;
495 if (SLOT_COUNT >= 3) CXINC;
496 for (i = 3; i < SLOT_COUNT; ++i) 582 for (i = 3; i < SLOT_COUNT; ++i)
497 CXINC; 583 CXINC;
498
499 cxstack_ix -= SLOT_COUNT; /* undo allocation */
500 } 584 }
585 cxstack_ix -= SLOT_COUNT; /* undo allocation */
501 586
502 c->mainstack = PL_mainstack; 587 c->mainstack = PL_mainstack;
503 588
504 { 589 {
505 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
… …
514 #undef VAR 599 #undef VAR
515 } 600 }
516} 601}
517 602
518/* 603/*
519 * allocate various perl stacks. This is an exact copy 604 * allocate various perl stacks. This is almost an exact copy
520 * of perl.c:init_stacks, except that it uses less memory 605 * of perl.c:init_stacks, except that it uses less memory
521 * on the (sometimes correct) assumption that coroutines do 606 * on the (sometimes correct) assumption that coroutines do
522 * not usually need a lot of stackspace. 607 * not usually need a lot of stackspace.
523 */ 608 */
524#if CORO_PREFER_PERL_FUNCTIONS 609#if CORO_PREFER_PERL_FUNCTIONS
… …
555 640
556 New(54,PL_savestack,24,ANY); 641 New(54,PL_savestack,24,ANY);
557 PL_savestack_ix = 0; 642 PL_savestack_ix = 0;
558 PL_savestack_max = 24; 643 PL_savestack_max = 24;
559 644
560#if !PERL_VERSION_ATLEAST (5,9,0) 645#if !PERL_VERSION_ATLEAST (5,10,0)
561 New(54,PL_retstack,4,OP*); 646 New(54,PL_retstack,4,OP*);
562 PL_retstack_ix = 0; 647 PL_retstack_ix = 0;
563 PL_retstack_max = 4; 648 PL_retstack_max = 4;
564#endif 649#endif
565} 650}
… …
567 652
568/* 653/*
569 * destroy the stacks, the callchain etc... 654 * destroy the stacks, the callchain etc...
570 */ 655 */
571static void 656static void
572coro_destroy_stacks (pTHX) 657coro_destruct_stacks (pTHX)
573{ 658{
574 while (PL_curstackinfo->si_next) 659 while (PL_curstackinfo->si_next)
575 PL_curstackinfo = PL_curstackinfo->si_next; 660 PL_curstackinfo = PL_curstackinfo->si_next;
576 661
577 while (PL_curstackinfo) 662 while (PL_curstackinfo)
… …
588 673
589 Safefree (PL_tmps_stack); 674 Safefree (PL_tmps_stack);
590 Safefree (PL_markstack); 675 Safefree (PL_markstack);
591 Safefree (PL_scopestack); 676 Safefree (PL_scopestack);
592 Safefree (PL_savestack); 677 Safefree (PL_savestack);
593#if !PERL_VERSION_ATLEAST (5,9,0) 678#if !PERL_VERSION_ATLEAST (5,10,0)
594 Safefree (PL_retstack); 679 Safefree (PL_retstack);
595#endif 680#endif
596} 681}
597 682
598static size_t 683static size_t
… …
614 #undef VAR 699 #undef VAR
615 } 700 }
616 else 701 else
617 slot = coro->slot; 702 slot = coro->slot;
618 703
704 if (slot)
705 {
619 rss += sizeof (slot->curstackinfo); 706 rss += sizeof (slot->curstackinfo);
620 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
621 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 *);
622 rss += slot->tmps_max * sizeof (SV *); 709 rss += slot->tmps_max * sizeof (SV *);
623 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
624 rss += slot->scopestack_max * sizeof (I32); 711 rss += slot->scopestack_max * sizeof (I32);
625 rss += slot->savestack_max * sizeof (ANY); 712 rss += slot->savestack_max * sizeof (ANY);
626 713
627#if !PERL_VERSION_ATLEAST (5,9,0) 714#if !PERL_VERSION_ATLEAST (5,10,0)
628 rss += slot->retstack_max * sizeof (OP *); 715 rss += slot->retstack_max * sizeof (OP *);
629#endif 716#endif
717 }
630 } 718 }
631 719
632 return rss; 720 return rss;
633} 721}
634 722
635/** 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}
636 827
637static void 828static void
638coro_setup (pTHX_ struct coro *coro) 829coro_setup (pTHX_ struct coro *coro)
639{ 830{
640 /* 831 /*
… …
649 PL_curpm = 0; 840 PL_curpm = 0;
650 PL_curpad = 0; 841 PL_curpad = 0;
651 PL_localizing = 0; 842 PL_localizing = 0;
652 PL_dirty = 0; 843 PL_dirty = 0;
653 PL_restartop = 0; 844 PL_restartop = 0;
654 PL_diehook = 0; 845#if PERL_VERSION_ATLEAST (5,10,0)
655 PL_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);
656 852
657 GvSV (PL_defgv) = newSV (0); 853 GvSV (PL_defgv) = newSV (0);
658 GvAV (PL_defgv) = coro->args; coro->args = 0; 854 GvAV (PL_defgv) = coro->args; coro->args = 0;
659 GvSV (PL_errgv) = newSV (0); 855 GvSV (PL_errgv) = newSV (0);
660 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);
661 PL_rs = newSVsv (GvSV (irsgv)); 857 PL_rs = newSVsv (GvSV (irsgv));
662 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
663 859
664 { 860 {
665 dSP; 861 dSP;
666 LOGOP myop; 862 UNOP myop;
667 863
668 Zero (&myop, 1, LOGOP); 864 Zero (&myop, 1, UNOP);
669 myop.op_next = Nullop; 865 myop.op_next = Nullop;
670 myop.op_flags = OPf_WANT_VOID; 866 myop.op_flags = OPf_WANT_VOID;
671 867
672 PUSHMARK (SP); 868 PUSHMARK (SP);
673 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
… …
675 PL_op = (OP *)&myop; 871 PL_op = (OP *)&myop;
676 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
677 SPAGAIN; 873 SPAGAIN;
678 } 874 }
679 875
680 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ 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 */
681} 881}
682 882
683static void 883static void
684coro_destroy (pTHX_ struct coro *coro) 884coro_destruct (pTHX_ struct coro *coro)
685{ 885{
686 if (!IN_DESTRUCT) 886 if (!IN_DESTRUCT)
687 { 887 {
688 /* restore all saved variables and stuff */ 888 /* restore all saved variables and stuff */
689 LEAVE_SCOPE (0); 889 LEAVE_SCOPE (0);
… …
711 SvREFCNT_dec (PL_warnhook); 911 SvREFCNT_dec (PL_warnhook);
712 912
713 SvREFCNT_dec (coro->saved_deffh); 913 SvREFCNT_dec (coro->saved_deffh);
714 SvREFCNT_dec (coro->throw); 914 SvREFCNT_dec (coro->throw);
715 915
716 coro_destroy_stacks (aTHX); 916 coro_destruct_stacks (aTHX);
717} 917}
718 918
719static void 919INLINE void
720free_coro_mortal (pTHX) 920free_coro_mortal (pTHX)
721{ 921{
722 if (expect_true (coro_mortal)) 922 if (expect_true (coro_mortal))
723 { 923 {
724 SvREFCNT_dec (coro_mortal); 924 SvREFCNT_dec (coro_mortal);
… …
758 : cx->blk_gimme == G_SCALAR ? bot + 1 958 : cx->blk_gimme == G_SCALAR ? bot + 1
759 : bot; 959 : bot;
760 960
761 av_extend (av, top - bot); 961 av_extend (av, top - bot);
762 while (bot < top) 962 while (bot < top)
763 av_push (av, SvREFCNT_inc (*bot++)); 963 av_push (av, SvREFCNT_inc_NN (*bot++));
764 964
765 PL_runops = RUNOPS_DEFAULT; 965 PL_runops = RUNOPS_DEFAULT;
766 ENTER; 966 ENTER;
767 SAVETMPS; 967 SAVETMPS;
768 EXTEND (SP, 3); 968 EXTEND (SP, 3);
… …
806 SAVETMPS; 1006 SAVETMPS;
807 EXTEND (SP, 3); 1007 EXTEND (SP, 3);
808 PUSHMARK (SP); 1008 PUSHMARK (SP);
809 PUSHs (&PL_sv_yes); 1009 PUSHs (&PL_sv_yes);
810 PUSHs (fullname); 1010 PUSHs (fullname);
811 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);
812 PUTBACK; 1012 PUTBACK;
813 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
814 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);
815 SPAGAIN; 1015 SPAGAIN;
816 FREETMPS; 1016 FREETMPS;
… …
848 1048
849 TAINT_NOT; 1049 TAINT_NOT;
850 return 0; 1050 return 0;
851} 1051}
852 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
853/* 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 */
854/* _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 */
855/* during execution of a perl program */ 1062/* during execution of a perl program */
1063/* also initialises PL_top_env */
856static void NOINLINE 1064static void NOINLINE
857prepare_cctx (pTHX_ coro_cctx *cctx) 1065cctx_prepare (pTHX_ coro_cctx *cctx)
858{ 1066{
859 dSP; 1067 dSP;
860 LOGOP myop; 1068 UNOP myop;
861 1069
862 PL_top_env = &PL_start_env; 1070 PL_top_env = &PL_start_env;
863 1071
864 if (cctx->flags & CC_TRACE) 1072 if (cctx->flags & CC_TRACE)
865 PL_runops = runops_trace; 1073 PL_runops = runops_trace;
866 1074
867 Zero (&myop, 1, LOGOP); 1075 Zero (&myop, 1, UNOP);
868 myop.op_next = PL_op; 1076 myop.op_next = PL_op;
869 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
870 1078
871 PUSHMARK (SP); 1079 PUSHMARK (SP);
872 EXTEND (SP, 2); 1080 EXTEND (SP, 2);
873 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1081 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
874 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
875 PUTBACK; 1083 PUTBACK;
876 PL_op = (OP *)&myop; 1084 PL_op = (OP *)&myop;
877 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
878 SPAGAIN; 1086 SPAGAIN;
879} 1087}
880 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
881/* 1110/*
882 * this is a _very_ stripped down perl interpreter ;) 1111 * this is a _very_ stripped down perl interpreter ;)
883 */ 1112 */
884static void 1113static void
885coro_run (void *arg) 1114cctx_run (void *arg)
886{ 1115{
1116#ifdef USE_ITHREADS
1117# if CORO_PTHREAD
1118 PERL_SET_CONTEXT (coro_thx);
1119# endif
1120#endif
1121 {
887 dTHX; 1122 dTHX;
888 1123
889 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1124 /* normally we would need to skip the entersub here */
890 UNLOCK; 1125 /* not doing so will re-execute it, which is exactly what we want */
891
892 /* we now skip the entersub that lead to transfer() */
893 PL_op = PL_op->op_next; 1126 /* PL_nop = PL_nop->op_next */
894 1127
895 /* inject a fake subroutine call to cctx_init */ 1128 /* inject a fake subroutine call to cctx_init */
896 prepare_cctx (aTHX_ (coro_cctx *)arg); 1129 cctx_prepare (aTHX_ (coro_cctx *)arg);
897 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
898 /* 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 */
899 PL_restartop = PL_op; 1136 PL_restartop = PL_op;
900 perl_run (PL_curinterp); 1137 perl_run (PL_curinterp);
901 1138
902 /* 1139 /*
903 * 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
904 * 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)
905 * 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
906 * bootstrap-time "top" top_env, as we cannot restore the "main" 1143 * bootstrap-time "top" top_env, as we cannot restore the "main"
907 * coroutine as Coro has no such concept 1144 * coroutine as Coro has no such concept
908 */ 1145 */
909 PL_top_env = main_top_env; 1146 PL_top_env = main_top_env;
910 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 }
911} 1149}
912 1150
913static coro_cctx * 1151static coro_cctx *
914cctx_new () 1152cctx_new ()
915{ 1153{
916 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 ();
917 void *stack_start; 1183 void *stack_start;
918 size_t stack_size; 1184 size_t stack_size;
919 1185
920 ++cctx_count;
921
922 Newz (0, cctx, 1, coro_cctx);
923
924#if HAVE_MMAP 1186#if HAVE_MMAP
925
926 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;
927 /* mmap supposedly does allocate-on-write for us */ 1188 /* mmap supposedly does allocate-on-write for us */
928 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);
929 1190
930 if (cctx->sptr != (void *)-1) 1191 if (cctx->sptr != (void *)-1)
931 { 1192 {
932# if CORO_STACKGUARD 1193 #if CORO_STACKGUARD
933 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1194 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
934# endif 1195 #endif
935 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1196 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
936 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1197 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
937 cctx->flags |= CC_MAPPED; 1198 cctx->flags |= CC_MAPPED;
938 } 1199 }
939 else 1200 else
940#endif 1201#endif
941 { 1202 {
942 cctx->ssize = coro_stacksize * (long)sizeof (long); 1203 cctx->ssize = cctx_stacksize * (long)sizeof (long);
943 New (0, cctx->sptr, coro_stacksize, long); 1204 New (0, cctx->sptr, cctx_stacksize, long);
944 1205
945 if (!cctx->sptr) 1206 if (!cctx->sptr)
946 { 1207 {
947 perror ("FATAL: unable to allocate stack for coroutine"); 1208 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
948 _exit (EXIT_FAILURE); 1209 _exit (EXIT_FAILURE);
949 } 1210 }
950 1211
951 stack_start = cctx->sptr; 1212 stack_start = cctx->sptr;
952 stack_size = cctx->ssize; 1213 stack_size = cctx->ssize;
953 } 1214 }
954 1215
955 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
956 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1220 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
957 1221
958 return cctx; 1222 return cctx;
959} 1223}
960 1224
961static void 1225static void
… …
963{ 1227{
964 if (!cctx) 1228 if (!cctx)
965 return; 1229 return;
966 1230
967 --cctx_count; 1231 --cctx_count;
1232 coro_destroy (&cctx->cctx);
968 1233
1234 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr)
1236 {
969#if CORO_USE_VALGRIND 1237 #if CORO_USE_VALGRIND
970 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1238 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
971#endif 1239 #endif
972 1240
973#if HAVE_MMAP 1241#if HAVE_MMAP
974 if (cctx->flags & CC_MAPPED) 1242 if (cctx->flags & CC_MAPPED)
975 munmap (cctx->sptr, cctx->ssize); 1243 munmap (cctx->sptr, cctx->ssize);
976 else 1244 else
977#endif 1245#endif
978 Safefree (cctx->sptr); 1246 Safefree (cctx->sptr);
1247 }
979 1248
980 Safefree (cctx); 1249 Safefree (cctx);
981} 1250}
982 1251
983/* wether this cctx should be destructed */ 1252/* wether this cctx should be destructed */
984#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))
985 1254
986static coro_cctx * 1255static coro_cctx *
987cctx_get (pTHX) 1256cctx_get (pTHX)
988{ 1257{
989 while (expect_true (cctx_first)) 1258 while (expect_true (cctx_first))
… …
996 return cctx; 1265 return cctx;
997 1266
998 cctx_destroy (cctx); 1267 cctx_destroy (cctx);
999 } 1268 }
1000 1269
1001 return cctx_new (); 1270 return cctx_new_run ();
1002} 1271}
1003 1272
1004static void 1273static void
1005cctx_put (coro_cctx *cctx) 1274cctx_put (coro_cctx *cctx)
1006{ 1275{
1276 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1277
1007 /* free another cctx if overlimit */ 1278 /* free another cctx if overlimit */
1008 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1279 if (expect_false (cctx_idle >= cctx_max_idle))
1009 { 1280 {
1010 coro_cctx *first = cctx_first; 1281 coro_cctx *first = cctx_first;
1011 cctx_first = first->next; 1282 cctx_first = first->next;
1012 --cctx_idle; 1283 --cctx_idle;
1013 1284
… …
1025transfer_check (pTHX_ struct coro *prev, struct coro *next) 1296transfer_check (pTHX_ struct coro *prev, struct coro *next)
1026{ 1297{
1027 if (expect_true (prev != next)) 1298 if (expect_true (prev != next))
1028 { 1299 {
1029 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1030 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,");
1031 1302
1032 if (expect_false (next->flags & CF_RUNNING)) 1303 if (expect_false (next->flags & CF_RUNNING))
1033 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,");
1034 1305
1035 if (expect_false (next->flags & CF_DESTROYED)) 1306 if (expect_false (next->flags & CF_DESTROYED))
1036 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,");
1037 1308
1038 if (
1039#if PERL_VERSION_ATLEAST (5,9,0) 1309#if !PERL_VERSION_ATLEAST (5,10,0)
1040 expect_false (PL_parser)
1041#else
1042 expect_false (PL_lex_state != LEX_NOTPARSING) 1310 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1043#endif
1044 )
1045 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
1046 } 1313 }
1047} 1314}
1048 1315
1049/* always use the TRANSFER macro */ 1316/* always use the TRANSFER macro */
1050static void NOINLINE 1317static void NOINLINE
1051transfer (pTHX_ struct coro *prev, struct coro *next) 1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1052{ 1319{
1053 dSTACKLEVEL; 1320 dSTACKLEVEL;
1054 1321
1055 /* sometimes transfer is only called to set idle_sp */ 1322 /* sometimes transfer is only called to set idle_sp */
1056 if (expect_false (!next)) 1323 if (expect_false (!next))
1057 { 1324 {
1058 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1325 ((coro_cctx *)prev)->idle_sp = stacklevel;
1059 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 */
1060 } 1327 }
1061 else if (expect_true (prev != next)) 1328 else if (expect_true (prev != next))
1062 { 1329 {
1063 coro_cctx *prev__cctx; 1330 coro_cctx *prev__cctx;
1064 1331
1065 if (expect_false (prev->flags & CF_NEW)) 1332 if (expect_false (prev->flags & CF_NEW))
1066 { 1333 {
1067 /* create a new empty context */ 1334 /* create a new empty/source context */
1068 Newz (0, prev->cctx, 1, coro_cctx); 1335 prev->cctx = cctx_new_empty ();
1069 prev->flags &= ~CF_NEW; 1336 prev->flags &= ~CF_NEW;
1070 prev->flags |= CF_RUNNING; 1337 prev->flags |= CF_RUNNING;
1071 } 1338 }
1072 1339
1073 prev->flags &= ~CF_RUNNING; 1340 prev->flags &= ~CF_RUNNING;
1074 next->flags |= CF_RUNNING; 1341 next->flags |= CF_RUNNING;
1075 1342
1076 LOCK; 1343 LOCK;
1344
1345 /* first get rid of the old state */
1346 save_perl (aTHX_ prev);
1077 1347
1078 if (expect_false (next->flags & CF_NEW)) 1348 if (expect_false (next->flags & CF_NEW))
1079 { 1349 {
1080 /* need to start coroutine */ 1350 /* need to start coroutine */
1081 next->flags &= ~CF_NEW; 1351 next->flags &= ~CF_NEW;
1082 /* first get rid of the old state */
1083 save_perl (aTHX_ prev);
1084 /* setup coroutine call */ 1352 /* setup coroutine call */
1085 coro_setup (aTHX_ next); 1353 coro_setup (aTHX_ next);
1086 } 1354 }
1087 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 ))
1088 { 1366 {
1089 /* coroutine already started */
1090 save_perl (aTHX_ prev);
1091 load_perl (aTHX_ next);
1092 }
1093
1094 prev__cctx = prev->cctx;
1095
1096 /* possibly "free" the cctx */
1097 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
1098 {
1099 /* 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 */
1100 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));
1101 1369
1102 prev->cctx = 0; 1370 prev->cctx = 0;
1103 1371
1104 /* 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 */
1105 /* 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 */
1106 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1374 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1375 if (!next->cctx)
1107 next->cctx = cctx_get (aTHX); 1376 next->cctx = cctx_get (aTHX);
1108 1377
1109 cctx_put (prev__cctx); 1378 cctx_put (prev__cctx);
1110 } 1379 }
1111 1380
1112 ++next->usecount; 1381 ++next->usecount;
1113 1382
1114 if (expect_true (!next->cctx)) 1383 if (expect_true (!next->cctx))
1115 next->cctx = cctx_get (aTHX); 1384 next->cctx = cctx_get (aTHX);
1385
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1387 transfer_next = next;
1116 1388
1117 if (expect_false (prev__cctx != next->cctx)) 1389 if (expect_false (prev__cctx != next->cctx))
1118 { 1390 {
1119 prev__cctx->top_env = PL_top_env; 1391 prev__cctx->top_env = PL_top_env;
1120 PL_top_env = next->cctx->top_env; 1392 PL_top_env = next->cctx->top_env;
1121 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1122 } 1394 }
1123 1395
1124 free_coro_mortal (aTHX); 1396 transfer_tail (aTHX);
1125 UNLOCK;
1126
1127 if (expect_false (prev->throw || next->throw))
1128 {
1129 struct coro *coro = SvSTATE (coro_current);
1130
1131 if (coro->throw)
1132 {
1133 SV *exception = coro->throw;
1134 coro->throw = 0;
1135 sv_setsv (ERRSV, exception);
1136 croak (0);
1137 }
1138 }
1139 } 1397 }
1140} 1398}
1141 1399
1142struct transfer_args
1143{
1144 struct coro *prev, *next;
1145};
1146
1147#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1400#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1148#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1401#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1149 1402
1150/** high level stuff ********************************************************/ 1403/** high level stuff ********************************************************/
1151 1404
1152static int 1405static int
… …
1170 1423
1171 if (coro->mainstack && coro->mainstack != main_mainstack) 1424 if (coro->mainstack && coro->mainstack != main_mainstack)
1172 { 1425 {
1173 struct coro temp; 1426 struct coro temp;
1174 1427
1175 if (coro->flags & CF_RUNNING) 1428 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1176 croak ("FATAL: tried to destroy currently running coroutine");
1177 1429
1178 save_perl (aTHX_ &temp); 1430 save_perl (aTHX_ &temp);
1179 load_perl (aTHX_ coro); 1431 load_perl (aTHX_ coro);
1180 1432
1181 coro_destroy (aTHX_ coro); 1433 coro_destruct (aTHX_ coro);
1182 1434
1183 load_perl (aTHX_ &temp); 1435 load_perl (aTHX_ &temp);
1184 1436
1185 coro->slot = 0; 1437 coro->slot = 0;
1186 } 1438 }
… …
1232# define MGf_DUP 0 1484# define MGf_DUP 0
1233#endif 1485#endif
1234}; 1486};
1235 1487
1236static void 1488static void
1237prepare_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)
1238{ 1490{
1239 ta->prev = SvSTATE (prev_sv); 1491 ta->prev = SvSTATE (prev_sv);
1240 ta->next = SvSTATE (next_sv); 1492 ta->next = SvSTATE (next_sv);
1241 TRANSFER_CHECK (*ta); 1493 TRANSFER_CHECK (*ta);
1242} 1494}
1243 1495
1244static void 1496static void
1245api_transfer (SV *prev_sv, SV *next_sv) 1497api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1246{ 1498{
1247 dTHX;
1248 struct transfer_args ta; 1499 struct coro_transfer_args ta;
1249 1500
1250 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1501 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1251 TRANSFER (ta); 1502 TRANSFER (ta, 1);
1252} 1503}
1253 1504
1254/** Coro ********************************************************************/ 1505/** Coro ********************************************************************/
1255 1506
1256static void 1507static void
… …
1258{ 1509{
1259 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);
1260} 1511}
1261 1512
1262static SV * 1513static SV *
1263coro_deq (pTHX_ int min_prio) 1514coro_deq (pTHX)
1264{ 1515{
1265 int prio = PRIO_MAX - PRIO_MIN; 1516 int prio;
1266 1517
1267 min_prio -= PRIO_MIN;
1268 if (min_prio < 0)
1269 min_prio = 0;
1270
1271 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1272 if (AvFILLp (coro_ready [prio]) >= 0) 1519 if (AvFILLp (coro_ready [prio]) >= 0)
1273 return av_shift (coro_ready [prio]); 1520 return av_shift (coro_ready [prio]);
1274 1521
1275 return 0; 1522 return 0;
1276} 1523}
1277 1524
1278static int 1525static int
1279api_ready (SV *coro_sv) 1526api_ready (pTHX_ SV *coro_sv)
1280{ 1527{
1281 dTHX;
1282 struct coro *coro; 1528 struct coro *coro;
1529 SV *sv_hook;
1530 void (*xs_hook)(void);
1283 1531
1284 if (SvROK (coro_sv)) 1532 if (SvROK (coro_sv))
1285 coro_sv = SvRV (coro_sv); 1533 coro_sv = SvRV (coro_sv);
1286 1534
1287 coro = SvSTATE (coro_sv); 1535 coro = SvSTATE (coro_sv);
… …
1290 return 0; 1538 return 0;
1291 1539
1292 coro->flags |= CF_READY; 1540 coro->flags |= CF_READY;
1293 1541
1294 LOCK; 1542 LOCK;
1543
1544 sv_hook = coro_nready ? 0 : coro_readyhook;
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1546
1295 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1296 ++coro_nready; 1548 ++coro_nready;
1549
1297 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 ();
1298 1570
1299 return 1; 1571 return 1;
1300} 1572}
1301 1573
1302static int 1574static int
1303api_is_ready (SV *coro_sv) 1575api_is_ready (pTHX_ SV *coro_sv)
1304{ 1576{
1305 dTHX;
1306 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1577 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1307} 1578}
1308 1579
1309static void 1580INLINE void
1310prepare_schedule (pTHX_ struct transfer_args *ta) 1581prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1311{ 1582{
1312 SV *prev_sv, *next_sv; 1583 SV *prev_sv, *next_sv;
1313 1584
1314 for (;;) 1585 for (;;)
1315 { 1586 {
1316 LOCK; 1587 LOCK;
1317 next_sv = coro_deq (aTHX_ PRIO_MIN); 1588 next_sv = coro_deq (aTHX);
1318 1589
1319 /* nothing to schedule: call the idle handler */ 1590 /* nothing to schedule: call the idle handler */
1320 if (expect_false (!next_sv)) 1591 if (expect_false (!next_sv))
1321 { 1592 {
1322 dSP; 1593 dSP;
… …
1326 SAVETMPS; 1597 SAVETMPS;
1327 1598
1328 PUSHMARK (SP); 1599 PUSHMARK (SP);
1329 PUTBACK; 1600 PUTBACK;
1330 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1602 SPAGAIN;
1331 1603
1332 FREETMPS; 1604 FREETMPS;
1333 LEAVE; 1605 LEAVE;
1334 continue; 1606 continue;
1335 } 1607 }
… …
1339 /* cannot transfer to destroyed coros, skip and look for next */ 1611 /* cannot transfer to destroyed coros, skip and look for next */
1340 if (expect_false (ta->next->flags & CF_DESTROYED)) 1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1341 { 1613 {
1342 UNLOCK; 1614 UNLOCK;
1343 SvREFCNT_dec (next_sv); 1615 SvREFCNT_dec (next_sv);
1344 /* coro_nready is already taken care of by destroy */ 1616 /* coro_nready has already been taken care of by destroy */
1345 continue; 1617 continue;
1346 } 1618 }
1347 1619
1348 --coro_nready; 1620 --coro_nready;
1349 UNLOCK; 1621 UNLOCK;
… …
1352 1624
1353 /* free this only after the transfer */ 1625 /* free this only after the transfer */
1354 prev_sv = SvRV (coro_current); 1626 prev_sv = SvRV (coro_current);
1355 ta->prev = SvSTATE (prev_sv); 1627 ta->prev = SvSTATE (prev_sv);
1356 TRANSFER_CHECK (*ta); 1628 TRANSFER_CHECK (*ta);
1357 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));
1358 ta->next->flags &= ~CF_READY; 1630 ta->next->flags &= ~CF_READY;
1359 SvRV_set (coro_current, next_sv); 1631 SvRV_set (coro_current, next_sv);
1360 1632
1361 LOCK; 1633 LOCK;
1362 free_coro_mortal (aTHX); 1634 free_coro_mortal (aTHX);
1363 coro_mortal = prev_sv; 1635 coro_mortal = prev_sv;
1364 UNLOCK; 1636 UNLOCK;
1365} 1637}
1366 1638
1367static void 1639INLINE void
1368prepare_cede (pTHX_ struct transfer_args *ta) 1640prepare_cede (pTHX_ struct coro_transfer_args *ta)
1369{ 1641{
1370 api_ready (coro_current); 1642 api_ready (aTHX_ coro_current);
1371 prepare_schedule (aTHX_ ta); 1643 prepare_schedule (aTHX_ ta);
1372} 1644}
1373 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
1374static int 1669static int
1375prepare_cede_notself (pTHX_ struct transfer_args *ta) 1670api_cede (pTHX)
1376{ 1671{
1377 if (coro_nready) 1672 struct coro_transfer_args ta;
1378 { 1673
1379 SV *prev = SvRV (coro_current);
1380 prepare_schedule (aTHX_ ta); 1674 prepare_cede (aTHX_ &ta);
1381 api_ready (prev); 1675
1676 if (expect_true (ta.prev != ta.next))
1677 {
1678 TRANSFER (ta, 1);
1382 return 1; 1679 return 1;
1383 } 1680 }
1384 else 1681 else
1385 return 0; 1682 return 0;
1386} 1683}
1387 1684
1388static void
1389api_schedule (void)
1390{
1391 dTHX;
1392 struct transfer_args ta;
1393
1394 prepare_schedule (aTHX_ &ta);
1395 TRANSFER (ta);
1396}
1397
1398static int 1685static int
1399api_cede (void) 1686api_cede_notself (pTHX)
1400{ 1687{
1401 dTHX; 1688 if (coro_nready)
1689 {
1402 struct transfer_args ta; 1690 struct coro_transfer_args ta;
1403 1691
1404 prepare_cede (aTHX_ &ta); 1692 prepare_cede_notself (aTHX_ &ta);
1405
1406 if (expect_true (ta.prev != ta.next))
1407 {
1408 TRANSFER (ta); 1693 TRANSFER (ta, 1);
1409 return 1; 1694 return 1;
1410 } 1695 }
1411 else 1696 else
1412 return 0; 1697 return 0;
1413} 1698}
1414 1699
1415static int 1700static void
1416api_cede_notself (void)
1417{
1418 dTHX;
1419 struct transfer_args ta;
1420
1421 if (prepare_cede_notself (aTHX_ &ta))
1422 {
1423 TRANSFER (ta);
1424 return 1;
1425 }
1426 else
1427 return 0;
1428}
1429
1430static void
1431api_trace (SV *coro_sv, int flags) 1701api_trace (pTHX_ SV *coro_sv, int flags)
1432{ 1702{
1433 dTHX;
1434 struct coro *coro = SvSTATE (coro_sv); 1703 struct coro *coro = SvSTATE (coro_sv);
1435 1704
1436 if (flags & CC_TRACE) 1705 if (flags & CC_TRACE)
1437 { 1706 {
1438 if (!coro->cctx) 1707 if (!coro->cctx)
1439 coro->cctx = cctx_new (); 1708 coro->cctx = cctx_new_run ();
1440 else if (!(coro->cctx->flags & CC_TRACE)) 1709 else if (!(coro->cctx->flags & CC_TRACE))
1441 croak ("cannot enable tracing on coroutine with custom stack"); 1710 croak ("cannot enable tracing on coroutine with custom stack,");
1442 1711
1443 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1444 } 1713 }
1445 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1446 { 1715 {
… …
1451 else 1720 else
1452 coro->slot->runops = RUNOPS_DEFAULT; 1721 coro->slot->runops = RUNOPS_DEFAULT;
1453 } 1722 }
1454} 1723}
1455 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
1456MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1457 2070
1458PROTOTYPES: DISABLE 2071PROTOTYPES: DISABLE
1459 2072
1460BOOT: 2073BOOT:
1461{ 2074{
1462#ifdef USE_ITHREADS 2075#ifdef USE_ITHREADS
1463 MUTEX_INIT (&coro_mutex); 2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT;
2079# endif
1464#endif 2080#endif
1465 BOOT_PAGESIZE; 2081 BOOT_PAGESIZE;
1466 2082
1467 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2083 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1468 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2084 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
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
2090 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2091 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2092 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1469 2093
1470 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2094 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1471 2095
1472 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2096 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1473 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2097 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1478 main_top_env = PL_top_env; 2102 main_top_env = PL_top_env;
1479 2103
1480 while (main_top_env->je_prev) 2104 while (main_top_env->je_prev)
1481 main_top_env = main_top_env->je_prev; 2105 main_top_env = main_top_env->je_prev;
1482 2106
1483 coroapi.ver = CORO_API_VERSION; 2107 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION;
2109
1484 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 }
1485 2127
1486 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2128 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1487} 2129}
1488 2130
1489SV * 2131SV *
1490new (char *klass, ...) 2132new (char *klass, ...)
1491 CODE: 2133 CODE:
1492{ 2134{
1493 struct coro *coro; 2135 struct coro *coro;
2136 MAGIC *mg;
1494 HV *hv; 2137 HV *hv;
1495 int i; 2138 int i;
1496 2139
1497 Newz (0, coro, 1, struct coro); 2140 Newz (0, coro, 1, struct coro);
1498 coro->args = newAV (); 2141 coro->args = newAV ();
… …
1501 if (coro_first) coro_first->prev = coro; 2144 if (coro_first) coro_first->prev = coro;
1502 coro->next = coro_first; 2145 coro->next = coro_first;
1503 coro_first = coro; 2146 coro_first = coro;
1504 2147
1505 coro->hv = hv = newHV (); 2148 coro->hv = hv = newHV ();
1506 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;
1507 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1508 2152
1509 av_extend (coro->args, items - 1); 2153 av_extend (coro->args, items - 1);
1510 for (i = 1; i < items; i++) 2154 for (i = 1; i < items; i++)
1511 av_push (coro->args, newSVsv (ST (i))); 2155 av_push (coro->args, newSVsv (ST (i)));
1512} 2156}
1513 OUTPUT: 2157 OUTPUT:
1514 RETVAL 2158 RETVAL
1515 2159
1516# these not obviously related functions are all rolled into the same xs
1517# function to increase chances that they all will call transfer with the same
1518# stack offset
1519void 2160void
1520_set_stacklevel (...) 2161_set_stacklevel (...)
1521 ALIAS: 2162 CODE:
1522 Coro::State::transfer = 1 2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1523 Coro::schedule = 2
1524 Coro::cede = 3
1525 Coro::cede_notself = 4
1526 CODE:
1527{
1528 struct transfer_args ta;
1529 2164
1530 switch (ix) 2165void
1531 { 2166transfer (...)
1532 case 0: 2167 CODE:
1533 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2168 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1534 ta.next = 0;
1535 break;
1536
1537 case 1:
1538 if (items != 2)
1539 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1540
1541 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1542 break;
1543
1544 case 2:
1545 prepare_schedule (aTHX_ &ta);
1546 break;
1547
1548 case 3:
1549 prepare_cede (aTHX_ &ta);
1550 break;
1551
1552 case 4:
1553 if (!prepare_cede_notself (aTHX_ &ta))
1554 XSRETURN_EMPTY;
1555
1556 break;
1557 }
1558
1559 BARRIER;
1560 TRANSFER (ta);
1561
1562 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1563 XSRETURN_YES;
1564}
1565 2169
1566bool 2170bool
1567_destroy (SV *coro_sv) 2171_destroy (SV *coro_sv)
1568 CODE: 2172 CODE:
1569 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2173 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1570 OUTPUT: 2174 OUTPUT:
1571 RETVAL 2175 RETVAL
1572 2176
1573void 2177void
1574_exit (code) 2178_exit (int code)
1575 int code
1576 PROTOTYPE: $ 2179 PROTOTYPE: $
1577 CODE: 2180 CODE:
1578 _exit (code); 2181 _exit (code);
1579 2182
1580int 2183int
1581cctx_stacksize (int new_stacksize = 0) 2184cctx_stacksize (int new_stacksize = 0)
2185 PROTOTYPE: ;$
1582 CODE: 2186 CODE:
1583 RETVAL = coro_stacksize; 2187 RETVAL = cctx_stacksize;
1584 if (new_stacksize) 2188 if (new_stacksize)
2189 {
1585 coro_stacksize = new_stacksize; 2190 cctx_stacksize = new_stacksize;
2191 ++cctx_gen;
2192 }
1586 OUTPUT: 2193 OUTPUT:
1587 RETVAL 2194 RETVAL
1588 2195
1589int 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
1590cctx_count () 2207cctx_count ()
2208 PROTOTYPE:
1591 CODE: 2209 CODE:
1592 RETVAL = cctx_count; 2210 RETVAL = cctx_count;
1593 OUTPUT: 2211 OUTPUT:
1594 RETVAL 2212 RETVAL
1595 2213
1596int 2214int
1597cctx_idle () 2215cctx_idle ()
2216 PROTOTYPE:
1598 CODE: 2217 CODE:
1599 RETVAL = cctx_idle; 2218 RETVAL = cctx_idle;
1600 OUTPUT: 2219 OUTPUT:
1601 RETVAL 2220 RETVAL
1602 2221
1603void 2222void
1604list () 2223list ()
2224 PROTOTYPE:
1605 PPCODE: 2225 PPCODE:
1606{ 2226{
1607 struct coro *coro; 2227 struct coro *coro;
1608 for (coro = coro_first; coro; coro = coro->next) 2228 for (coro = coro_first; coro; coro = coro->next)
1609 if (coro->hv) 2229 if (coro->hv)
… …
1614call (Coro::State coro, SV *coderef) 2234call (Coro::State coro, SV *coderef)
1615 ALIAS: 2235 ALIAS:
1616 eval = 1 2236 eval = 1
1617 CODE: 2237 CODE:
1618{ 2238{
1619 if (coro->mainstack) 2239 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1620 { 2240 {
1621 struct coro temp; 2241 struct coro temp;
1622 2242
1623 if (!(coro->flags & CF_RUNNING)) 2243 if (!(coro->flags & CF_RUNNING))
1624 { 2244 {
2245 PUTBACK;
1625 save_perl (aTHX_ &temp); 2246 save_perl (aTHX_ &temp);
1626 load_perl (aTHX_ coro); 2247 load_perl (aTHX_ coro);
1627 } 2248 }
1628 2249
1629 { 2250 {
1630 dSP; 2251 dSP;
1631 ENTER; 2252 ENTER;
1632 SAVETMPS; 2253 SAVETMPS;
2254 PUTBACK;
2255 PUSHSTACK;
1633 PUSHMARK (SP); 2256 PUSHMARK (SP);
1634 PUTBACK;
1635 2257
1636 if (ix) 2258 if (ix)
1637 eval_sv (coderef, 0); 2259 eval_sv (coderef, 0);
1638 else 2260 else
1639 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2261 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1640 2262
2263 POPSTACK;
1641 SPAGAIN; 2264 SPAGAIN;
1642 FREETMPS; 2265 FREETMPS;
1643 LEAVE; 2266 LEAVE;
1644 PUTBACK; 2267 PUTBACK;
1645 } 2268 }
1646 2269
1647 if (!(coro->flags & CF_RUNNING)) 2270 if (!(coro->flags & CF_RUNNING))
1648 { 2271 {
1649 save_perl (aTHX_ coro); 2272 save_perl (aTHX_ coro);
1650 load_perl (aTHX_ &temp); 2273 load_perl (aTHX_ &temp);
2274 SPAGAIN;
1651 } 2275 }
1652 } 2276 }
1653} 2277}
1654 2278
1655SV * 2279SV *
… …
1664 RETVAL = boolSV (coro->flags & ix); 2288 RETVAL = boolSV (coro->flags & ix);
1665 OUTPUT: 2289 OUTPUT:
1666 RETVAL 2290 RETVAL
1667 2291
1668void 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
1669api_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
1670 2303
1671SV * 2304SV *
1672has_stack (Coro::State coro) 2305has_cctx (Coro::State coro)
1673 PROTOTYPE: $ 2306 PROTOTYPE: $
1674 CODE: 2307 CODE:
1675 RETVAL = boolSV (!!coro->cctx); 2308 RETVAL = boolSV (!!coro->cctx);
1676 OUTPUT: 2309 OUTPUT:
1677 RETVAL 2310 RETVAL
… …
1682 CODE: 2315 CODE:
1683 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2316 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1684 OUTPUT: 2317 OUTPUT:
1685 RETVAL 2318 RETVAL
1686 2319
1687IV 2320UV
1688rss (Coro::State coro) 2321rss (Coro::State coro)
1689 PROTOTYPE: $ 2322 PROTOTYPE: $
1690 ALIAS: 2323 ALIAS:
1691 usecount = 1 2324 usecount = 1
1692 CODE: 2325 CODE:
… …
1696 case 1: RETVAL = coro->usecount; break; 2329 case 1: RETVAL = coro->usecount; break;
1697 } 2330 }
1698 OUTPUT: 2331 OUTPUT:
1699 RETVAL 2332 RETVAL
1700 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 }
1701 2356
1702MODULE = Coro::State PACKAGE = Coro 2357MODULE = Coro::State PACKAGE = Coro
1703 2358
1704BOOT: 2359BOOT:
1705{ 2360{
1706 int i; 2361 int i;
1707 2362
1708 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1709 get_sv ("Coro::POOL_RSS" , TRUE); /* silence stupid 5.10 warning */
1710 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1711 get_sv ("Coro::POOL_SIZE" , TRUE); /* silence stupid 5.10 warning */
1712 av_async_pool = get_av ("Coro::async_pool", TRUE); 2363 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1713 get_av ("Coro::async_pool", TRUE); /* silence stupid 5.10 warning */ 2364 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2365 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1714 2366
1715 coro_current = get_sv ("Coro::current", FALSE); 2367 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1716 SvREADONLY_on (coro_current); 2368 SvREADONLY_on (coro_current);
1717 2369
1718 coro_stash = gv_stashpv ("Coro", TRUE); 2370 coro_stash = gv_stashpv ("Coro", TRUE);
1719 2371
1720 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2372 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
1726 2378
1727 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2379 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1728 coro_ready[i] = newAV (); 2380 coro_ready[i] = newAV ();
1729 2381
1730 { 2382 {
1731 SV *sv = perl_get_sv ("Coro::API", TRUE); 2383 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1732 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1733 2384
1734 coroapi.schedule = api_schedule; 2385 coroapi.schedule = api_schedule;
1735 coroapi.cede = api_cede; 2386 coroapi.cede = api_cede;
1736 coroapi.cede_notself = api_cede_notself; 2387 coroapi.cede_notself = api_cede_notself;
1737 coroapi.ready = api_ready; 2388 coroapi.ready = api_ready;
1738 coroapi.is_ready = api_is_ready; 2389 coroapi.is_ready = api_is_ready;
1739 coroapi.nready = &coro_nready; 2390 coroapi.nready = coro_nready;
1740 coroapi.current = coro_current; 2391 coroapi.current = coro_current;
1741 2392
1742 GCoroAPI = &coroapi; 2393 GCoroAPI = &coroapi;
1743 sv_setiv (sv, (IV)&coroapi); 2394 sv_setiv (sv, (IV)&coroapi);
1744 SvREADONLY_on (sv); 2395 SvREADONLY_on (sv);
1745 } 2396 }
1746} 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);
1747 2413
1748void 2414void
1749_set_current (SV *current) 2415_set_current (SV *current)
1750 PROTOTYPE: $ 2416 PROTOTYPE: $
1751 CODE: 2417 CODE:
1752 SvREFCNT_dec (SvRV (coro_current)); 2418 SvREFCNT_dec (SvRV (coro_current));
1753 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;
1754 2429
1755int 2430int
1756prio (Coro::State coro, int newprio = 0) 2431prio (Coro::State coro, int newprio = 0)
2432 PROTOTYPE: $;$
1757 ALIAS: 2433 ALIAS:
1758 nice = 1 2434 nice = 1
1759 CODE: 2435 CODE:
1760{ 2436{
1761 RETVAL = coro->prio; 2437 RETVAL = coro->prio;
… …
1776 2452
1777SV * 2453SV *
1778ready (SV *self) 2454ready (SV *self)
1779 PROTOTYPE: $ 2455 PROTOTYPE: $
1780 CODE: 2456 CODE:
1781 RETVAL = boolSV (api_ready (self)); 2457 RETVAL = boolSV (api_ready (aTHX_ self));
1782 OUTPUT: 2458 OUTPUT:
1783 RETVAL 2459 RETVAL
1784 2460
1785int 2461int
1786nready (...) 2462nready (...)
… …
1788 CODE: 2464 CODE:
1789 RETVAL = coro_nready; 2465 RETVAL = coro_nready;
1790 OUTPUT: 2466 OUTPUT:
1791 RETVAL 2467 RETVAL
1792 2468
1793void
1794throw (Coro::State self, SV *throw = &PL_sv_undef)
1795 PROTOTYPE: $;$
1796 CODE:
1797 SvREFCNT_dec (self->throw);
1798 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1799
1800# for async_pool speedup 2469# for async_pool speedup
1801void 2470void
1802_pool_1 (SV *cb) 2471_pool_1 (SV *cb)
1803 CODE: 2472 CODE:
1804{ 2473{
… …
1808 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2477 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1809 AV *invoke_av; 2478 AV *invoke_av;
1810 int i, len; 2479 int i, len;
1811 2480
1812 if (!invoke) 2481 if (!invoke)
2482 {
2483 SV *old = PL_diehook;
2484 PL_diehook = 0;
2485 SvREFCNT_dec (old);
1813 croak ("\3async_pool terminate\2\n"); 2486 croak ("\3async_pool terminate\2\n");
2487 }
1814 2488
1815 SvREFCNT_dec (coro->saved_deffh); 2489 SvREFCNT_dec (coro->saved_deffh);
1816 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2490 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1817 2491
1818 hv_store (hv, "desc", sizeof ("desc") - 1, 2492 hv_store (hv, "desc", sizeof ("desc") - 1,
1819 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2493 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1820 2494
1821 invoke_av = (AV *)SvRV (invoke); 2495 invoke_av = (AV *)SvRV (invoke);
… …
1825 2499
1826 if (len > 0) 2500 if (len > 0)
1827 { 2501 {
1828 av_fill (defav, len - 1); 2502 av_fill (defav, len - 1);
1829 for (i = 0; i < len; ++i) 2503 for (i = 0; i < len; ++i)
1830 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2504 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1831 } 2505 }
1832
1833 SvREFCNT_dec (invoke);
1834} 2506}
1835 2507
1836void 2508void
1837_pool_2 (SV *cb) 2509_pool_2 (SV *cb)
1838 CODE: 2510 CODE:
… …
1842 sv_setsv (cb, &PL_sv_undef); 2514 sv_setsv (cb, &PL_sv_undef);
1843 2515
1844 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2516 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1845 coro->saved_deffh = 0; 2517 coro->saved_deffh = 0;
1846 2518
1847 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2519 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1848 || 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);
1849 croak ("\3async_pool terminate\2\n"); 2525 croak ("\3async_pool terminate\2\n");
2526 }
1850 2527
1851 av_clear (GvAV (PL_defgv)); 2528 av_clear (GvAV (PL_defgv));
1852 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2529 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1853 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2530 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1854 2531
1855 coro->prio = 0; 2532 coro->prio = 0;
1856 2533
1857 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2534 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1858 api_trace (coro_current, 0); 2535 api_trace (aTHX_ coro_current, 0);
1859 2536
1860 av_push (av_async_pool, newSVsv (coro_current)); 2537 av_push (av_async_pool, newSVsv (coro_current));
1861} 2538}
1862 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
1863 2588
1864MODULE = Coro::State PACKAGE = Coro::AIO 2589MODULE = Coro::State PACKAGE = Coro::AIO
1865 2590
1866SV * 2591void
1867_get_state () 2592_get_state (SV *self)
2593 PROTOTYPE: $
1868 CODE: 2594 PPCODE:
1869{ 2595{
1870 struct io_state *data; 2596 AV *defav = GvAV (PL_defgv);
1871 2597 AV *av = newAV ();
2598 int i;
1872 RETVAL = newSV (sizeof (struct io_state)); 2599 SV *data_sv = newSV (sizeof (struct io_state));
1873 data = (struct io_state *)SvPVX (RETVAL); 2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1874 SvCUR_set (RETVAL, sizeof (struct io_state)); 2601 SvCUR_set (data_sv, sizeof (struct io_state));
1875 SvPOK_only (RETVAL); 2602 SvPOK_only (data_sv);
1876 2603
1877 data->errorno = errno; 2604 data->errorno = errno;
1878 data->laststype = PL_laststype; 2605 data->laststype = PL_laststype;
1879 data->laststatval = PL_laststatval; 2606 data->laststatval = PL_laststatval;
1880 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);
1881} 2619}
1882 OUTPUT:
1883 RETVAL
1884 2620
1885void 2621void
1886_set_state (char *data_) 2622_set_state (SV *state)
1887 PROTOTYPE: $ 2623 PROTOTYPE: $
1888 CODE: 2624 PPCODE:
1889{ 2625{
1890 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;
1891 2629
1892 errno = data->errorno; 2630 errno = data->errorno;
1893 PL_laststype = data->laststype; 2631 PL_laststype = data->laststype;
1894 PL_laststatval = data->laststatval; 2632 PL_laststatval = data->laststatval;
1895 PL_statcache = data->statcache; 2633 PL_statcache = data->statcache;
1896}
1897 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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