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Comparing Coro/Coro/State.xs (file contents):
Revision 1.190 by root, Fri Oct 5 20:39:39 2007 UTC vs.
Revision 1.284 by root, Mon Nov 17 01:05:47 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#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
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 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
75/* 5.8.7 */ 101/* 5.8.7 */
76#ifndef SvRV_set 102#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 104#endif
79 105
80/* 5.8.8 */
81#ifndef GV_NOTQUAL
82# define GV_NOTQUAL 0
83#endif
84
85#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
86# undef CORO_STACKGUARD 107# undef CORO_STACKGUARD
87#endif 108#endif
88 109
89#ifndef CORO_STACKGUARD 110#ifndef CORO_STACKGUARD
… …
95# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
96#endif 117#endif
97 118
98/* 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
99 * portable way as possible. */ 120 * portable way as possible. */
100#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
101#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
102 126
103#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
104 128
105#if __GNUC__ >= 3 129#if __GNUC__ >= 3
106# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
107# define BARRIER __asm__ __volatile__ ("" : : : "memory") 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
108#else 133#else
109# define attribute(x) 134# define attribute(x)
110# define BARRIER 135# define expect(expr,value) (expr)
136# define INLINE static
111#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
112 141
113#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
114 143
115#include "CoroAPI.h" 144#include "CoroAPI.h"
116 145
117#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
118static perl_mutex coro_mutex; 147# if CORO_PTHREAD
119# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
120# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# endif
121#else
122# define LOCK (void)0
123# define UNLOCK (void)0
124#endif 150#endif
125 151
126/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
127struct io_state 153struct io_state
128{ 154{
155 AV *res;
129 int errorno; 156 int errorno;
130 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
131 int laststatval; 158 int laststatval;
132 Stat_t statcache; 159 Stat_t statcache;
133}; 160};
134 161
162static double (*nvtime)(); /* so why doesn't it take void? */
163
164static U32 cctx_gen;
135static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
136static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
137static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
138static JMPENV *main_top_env; 168static JMPENV *main_top_env;
139static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
140static SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
141 171
142static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
143static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook;
175static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */
144 177
145/* async_pool helper stuff */ 178/* async_pool helper stuff */
146static SV *sv_pool_rss; 179static SV *sv_pool_rss;
147static SV *sv_pool_size; 180static SV *sv_pool_size;
148static AV *av_async_pool; 181static AV *av_async_pool;
182
183/* Coro::AnyEvent */
184static SV *sv_activity;
149 185
150static struct coro_cctx *cctx_first; 186static struct coro_cctx *cctx_first;
151static int cctx_count, cctx_idle; 187static int cctx_count, cctx_idle;
152 188
153enum { 189enum {
… …
158 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
159 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
160}; 196};
161 197
162/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
163typedef struct coro_cctx { 199typedef struct coro_cctx
200{
164 struct coro_cctx *next; 201 struct coro_cctx *next;
165 202
166 /* the stack */ 203 /* the stack */
167 void *sptr; 204 void *sptr;
168 size_t ssize; 205 size_t ssize;
… …
171 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
172 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
173 JMPENV *top_env; 210 JMPENV *top_env;
174 coro_context cctx; 211 coro_context cctx;
175 212
213 U32 gen;
176#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
177 int valgrind_id; 215 int valgrind_id;
178#endif 216#endif
179 unsigned char flags; 217 unsigned char flags;
180} coro_cctx; 218} coro_cctx;
… …
184 CF_READY = 0x0002, /* coroutine is ready */ 222 CF_READY = 0x0002, /* coroutine is ready */
185 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
186 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
187}; 225};
188 226
189/* this is a structure representing a perl-level coroutine */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
190struct coro { 228typedef struct
191 /* the c coroutine allocated to this perl coroutine, if any */ 229{
192 coro_cctx *cctx; 230 SV *defsv;
193 231 AV *defav;
194 /* data associated with this coroutine (initial args) */ 232 SV *errsv;
195 AV *args; 233 SV *irsgv;
196 int refcnt;
197 int flags; /* CF_ flags */
198
199 /* optionally saved, might be zero */
200 AV *defav; /* @_ */
201 SV *defsv; /* $_ */
202 SV *errsv; /* $@ */
203 SV *deffh; /* default filehandle */
204 SV *irssv; /* $/ */
205 SV *irssv_sv; /* real $/ cache */
206
207#define VAR(name,type) type name; 234#define VAR(name,type) type name;
208# include "state.h" 235# include "state.h"
209#undef VAR 236#undef VAR
237} perl_slots;
238
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240
241/* this is a structure representing a perl-level coroutine */
242struct coro {
243 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx;
245
246 /* process data */
247 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */
250
251 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
210 256
211 /* statistics */ 257 /* statistics */
212 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
213 259
214 /* coro process data */ 260 /* coro process data */
215 int prio; 261 int prio;
216 //SV *throw; 262 SV *throw; /* exception to be thrown */
217 263
218 /* async_pool */ 264 /* async_pool */
219 SV *saved_deffh; 265 SV *saved_deffh;
220 266
221 /* linked list */ 267 /* linked list */
222 struct coro *next, *prev; 268 struct coro *next, *prev;
223 HV *hv; /* the perl hash associated with this coro, if any */
224}; 269};
225 270
226typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
227typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
273
274static struct CoroSLF slf_frame; /* the current slf frame */
228 275
229/** Coro ********************************************************************/ 276/** Coro ********************************************************************/
230 277
231#define PRIO_MAX 3 278#define PRIO_MAX 3
232#define PRIO_HIGH 1 279#define PRIO_HIGH 1
… …
235#define PRIO_IDLE -3 282#define PRIO_IDLE -3
236#define PRIO_MIN -4 283#define PRIO_MIN -4
237 284
238/* for Coro.pm */ 285/* for Coro.pm */
239static SV *coro_current; 286static SV *coro_current;
287static SV *coro_readyhook;
240static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
241static int coro_nready;
242static struct coro *coro_first; 289static struct coro *coro_first;
290#define coro_nready coroapi.nready
243 291
244/** lowlevel stuff **********************************************************/ 292/** lowlevel stuff **********************************************************/
293
294static SV *
295coro_get_sv (pTHX_ const char *name, int create)
296{
297#if PERL_VERSION_ATLEAST (5,10,0)
298 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
299 get_sv (name, create);
300#endif
301 return get_sv (name, create);
302}
303
304static AV *
305coro_get_av (pTHX_ const char *name, int create)
306{
307#if PERL_VERSION_ATLEAST (5,10,0)
308 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
309 get_av (name, create);
310#endif
311 return get_av (name, create);
312}
313
314static HV *
315coro_get_hv (pTHX_ const char *name, int create)
316{
317#if PERL_VERSION_ATLEAST (5,10,0)
318 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
319 get_hv (name, create);
320#endif
321 return get_hv (name, create);
322}
245 323
246static AV * 324static AV *
247coro_clone_padlist (pTHX_ CV *cv) 325coro_clone_padlist (pTHX_ CV *cv)
248{ 326{
249 AV *padlist = CvPADLIST (cv); 327 AV *padlist = CvPADLIST (cv);
250 AV *newpadlist, *newpad; 328 AV *newpadlist, *newpad;
251 329
252 newpadlist = newAV (); 330 newpadlist = newAV ();
253 AvREAL_off (newpadlist); 331 AvREAL_off (newpadlist);
254#if PERL_VERSION_ATLEAST (5,9,0) 332#if PERL_VERSION_ATLEAST (5,10,0)
255 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 333 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
256#else 334#else
257 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 335 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
258#endif 336#endif
259 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 337 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
260 --AvFILLp (padlist); 338 --AvFILLp (padlist);
261 339
262 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 340 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
263 av_store (newpadlist, 1, (SV *)newpad); 341 av_store (newpadlist, 1, (SV *)newpad);
264 342
265 return newpadlist; 343 return newpadlist;
266} 344}
267 345
… …
297 375
298 /* casting is fun. */ 376 /* casting is fun. */
299 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 377 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
300 free_padlist (aTHX_ padlist); 378 free_padlist (aTHX_ padlist);
301 379
302 SvREFCNT_dec (av); 380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
303 381
304 return 0; 382 return 0;
305} 383}
306 384
307#define PERL_MAGIC_coro PERL_MAGIC_ext 385#define CORO_MAGIC_type_cv PERL_MAGIC_ext
386#define CORO_MAGIC_type_state PERL_MAGIC_ext
308 387
309static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 388static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0,
390 coro_cv_free
391};
310 392
311#define CORO_MAGIC(cv) \ 393#define CORO_MAGIC(sv, type) \
312 SvMAGIC (cv) \ 394 expect_true (SvMAGIC (sv)) \
313 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
314 ? SvMAGIC (cv) \ 396 ? SvMAGIC (sv) \
315 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 397 : mg_find (sv, type) \
316 : 0 398 : 0
317 399
318static struct coro * 400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
319SvSTATE_ (pTHX_ SV *coro) 404SvSTATE_ (pTHX_ SV *coro)
320{ 405{
321 HV *stash; 406 HV *stash;
322 MAGIC *mg; 407 MAGIC *mg;
323 408
324 if (SvROK (coro)) 409 if (SvROK (coro))
325 coro = SvRV (coro); 410 coro = SvRV (coro);
326 411
327 if (SvTYPE (coro) != SVt_PVHV) 412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
328 croak ("Coro::State object required"); 413 croak ("Coro::State object required");
329 414
330 stash = SvSTASH (coro); 415 stash = SvSTASH (coro);
331 if (stash != coro_stash && stash != coro_state_stash) 416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
332 { 417 {
333 /* very slow, but rare, check */ 418 /* very slow, but rare, check */
334 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
335 croak ("Coro::State object required"); 420 croak ("Coro::State object required");
336 } 421 }
337 422
338 mg = CORO_MAGIC (coro); 423 mg = CORO_MAGIC_state (coro);
339 return (struct coro *)mg->mg_ptr; 424 return (struct coro *)mg->mg_ptr;
340} 425}
341 426
342#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
343 428
429/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441
344/* the next two functions merely cache the padlists */ 442/* the next two functions merely cache the padlists */
345static void 443static void
346get_padlist (pTHX_ CV *cv) 444get_padlist (pTHX_ CV *cv)
347{ 445{
348 MAGIC *mg = CORO_MAGIC (cv); 446 MAGIC *mg = CORO_MAGIC_cv (cv);
349 AV *av; 447 AV *av;
350 448
351 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 449 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
352 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 450 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
353 else 451 else
354 { 452 {
355#if CORO_PREFER_PERL_FUNCTIONS 453#if CORO_PREFER_PERL_FUNCTIONS
356 /* this is probably cleaner, but also slower? */ 454 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */
357 CV *cp = Perl_cv_clone (cv); 456 CV *cp = Perl_cv_clone (cv);
358 CvPADLIST (cv) = CvPADLIST (cp); 457 CvPADLIST (cv) = CvPADLIST (cp);
359 CvPADLIST (cp) = 0; 458 CvPADLIST (cp) = 0;
360 SvREFCNT_dec (cp); 459 SvREFCNT_dec (cp);
361#else 460#else
… …
365} 464}
366 465
367static void 466static void
368put_padlist (pTHX_ CV *cv) 467put_padlist (pTHX_ CV *cv)
369{ 468{
370 MAGIC *mg = CORO_MAGIC (cv); 469 MAGIC *mg = CORO_MAGIC_cv (cv);
371 AV *av; 470 AV *av;
372 471
373 if (!mg) 472 if (expect_false (!mg))
374 { 473 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
375 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
376 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
377 mg->mg_virtual = &vtbl_coro;
378 mg->mg_obj = (SV *)newAV ();
379 }
380 474
381 av = (AV *)mg->mg_obj; 475 av = (AV *)mg->mg_obj;
382 476
383 if (AvFILLp (av) >= AvMAX (av)) 477 if (expect_false (AvFILLp (av) >= AvMAX (av)))
384 av_extend (av, AvMAX (av) + 1); 478 av_extend (av, AvMAX (av) + 1);
385 479
386 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 480 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
387} 481}
388 482
389/** load & save, init *******************************************************/ 483/** load & save, init *******************************************************/
390 484
391static void 485static void
392load_perl (pTHX_ Coro__State c) 486load_perl (pTHX_ Coro__State c)
393{ 487{
488 perl_slots *slot = c->slot;
489 c->slot = 0;
490
491 PL_mainstack = c->mainstack;
492
493 GvSV (PL_defgv) = slot->defsv;
494 GvAV (PL_defgv) = slot->defav;
495 GvSV (PL_errgv) = slot->errsv;
496 GvSV (irsgv) = slot->irsgv;
497
394#define VAR(name,type) PL_ ## name = c->name; 498 #define VAR(name,type) PL_ ## name = slot->name;
395# include "state.h" 499 # include "state.h"
396#undef VAR 500 #undef VAR
397
398 GvSV (PL_defgv) = c->defsv;
399 GvAV (PL_defgv) = c->defav;
400 GvSV (PL_errgv) = c->errsv;
401 GvSV (irsgv) = c->irssv_sv;
402 501
403 { 502 {
404 dSP; 503 dSP;
504
405 CV *cv; 505 CV *cv;
406 506
407 /* now do the ugly restore mess */ 507 /* now do the ugly restore mess */
408 while ((cv = (CV *)POPs)) 508 while (expect_true (cv = (CV *)POPs))
409 { 509 {
410 put_padlist (aTHX_ cv); /* mark this padlist as available */ 510 put_padlist (aTHX_ cv); /* mark this padlist as available */
411 CvDEPTH (cv) = PTR2IV (POPs); 511 CvDEPTH (cv) = PTR2IV (POPs);
412 CvPADLIST (cv) = (AV *)POPs; 512 CvPADLIST (cv) = (AV *)POPs;
413 } 513 }
414 514
415 PUTBACK; 515 PUTBACK;
416 } 516 }
517
518 slf_frame = c->slf_frame;
417} 519}
418 520
419static void 521static void
420save_perl (pTHX_ Coro__State c) 522save_perl (pTHX_ Coro__State c)
421{ 523{
524 c->slf_frame = slf_frame;
525
422 { 526 {
423 dSP; 527 dSP;
424 I32 cxix = cxstack_ix; 528 I32 cxix = cxstack_ix;
425 PERL_CONTEXT *ccstk = cxstack; 529 PERL_CONTEXT *ccstk = cxstack;
426 PERL_SI *top_si = PL_curstackinfo; 530 PERL_SI *top_si = PL_curstackinfo;
… …
432 536
433 XPUSHs (Nullsv); 537 XPUSHs (Nullsv);
434 /* this loop was inspired by pp_caller */ 538 /* this loop was inspired by pp_caller */
435 for (;;) 539 for (;;)
436 { 540 {
437 while (cxix >= 0) 541 while (expect_true (cxix >= 0))
438 { 542 {
439 PERL_CONTEXT *cx = &ccstk[cxix--]; 543 PERL_CONTEXT *cx = &ccstk[cxix--];
440 544
441 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 545 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
442 { 546 {
443 CV *cv = cx->blk_sub.cv; 547 CV *cv = cx->blk_sub.cv;
444 548
445 if (CvDEPTH (cv)) 549 if (expect_true (CvDEPTH (cv)))
446 { 550 {
447 EXTEND (SP, 3); 551 EXTEND (SP, 3);
448 PUSHs ((SV *)CvPADLIST (cv)); 552 PUSHs ((SV *)CvPADLIST (cv));
449 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
450 PUSHs ((SV *)cv); 554 PUSHs ((SV *)cv);
451 555
452 CvDEPTH (cv) = 0; 556 CvDEPTH (cv) = 0;
453 get_padlist (aTHX_ cv); 557 get_padlist (aTHX_ cv);
454 } 558 }
455 } 559 }
456 } 560 }
457 561
458 if (top_si->si_type == PERLSI_MAIN) 562 if (expect_true (top_si->si_type == PERLSI_MAIN))
459 break; 563 break;
460 564
461 top_si = top_si->si_prev; 565 top_si = top_si->si_prev;
462 ccstk = top_si->si_cxstack; 566 ccstk = top_si->si_cxstack;
463 cxix = top_si->si_cxix; 567 cxix = top_si->si_cxix;
464 } 568 }
465 569
466 PUTBACK; 570 PUTBACK;
467 } 571 }
468 572
573 /* allocate some space on the context stack for our purposes */
574 /* we manually unroll here, as usually 2 slots is enough */
575 if (SLOT_COUNT >= 1) CXINC;
576 if (SLOT_COUNT >= 2) CXINC;
577 if (SLOT_COUNT >= 3) CXINC;
578 {
579 int i;
580 for (i = 3; i < SLOT_COUNT; ++i)
581 CXINC;
582 }
583 cxstack_ix -= SLOT_COUNT; /* undo allocation */
584
585 c->mainstack = PL_mainstack;
586
587 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589
469 c->defav = GvAV (PL_defgv); 590 slot->defav = GvAV (PL_defgv);
470 c->defsv = DEFSV; 591 slot->defsv = DEFSV;
471 c->errsv = ERRSV; 592 slot->errsv = ERRSV;
472 c->irssv_sv = GvSV (irsgv); 593 slot->irsgv = GvSV (irsgv);
473 594
474#define VAR(name,type)c->name = PL_ ## name; 595 #define VAR(name,type) slot->name = PL_ ## name;
475# include "state.h" 596 # include "state.h"
476#undef VAR 597 #undef VAR
598 }
477} 599}
478 600
479/* 601/*
480 * allocate various perl stacks. This is an exact copy 602 * allocate various perl stacks. This is almost an exact copy
481 * of perl.c:init_stacks, except that it uses less memory 603 * of perl.c:init_stacks, except that it uses less memory
482 * on the (sometimes correct) assumption that coroutines do 604 * on the (sometimes correct) assumption that coroutines do
483 * not usually need a lot of stackspace. 605 * not usually need a lot of stackspace.
484 */ 606 */
485#if CORO_PREFER_PERL_FUNCTIONS 607#if CORO_PREFER_PERL_FUNCTIONS
486# define coro_init_stacks init_stacks 608# define coro_init_stacks init_stacks
487#else 609#else
488static void 610static void
489coro_init_stacks (pTHX) 611coro_init_stacks (pTHX)
490{ 612{
491 PL_curstackinfo = new_stackinfo(64, 6); 613 PL_curstackinfo = new_stackinfo(32, 8);
492 PL_curstackinfo->si_type = PERLSI_MAIN; 614 PL_curstackinfo->si_type = PERLSI_MAIN;
493 PL_curstack = PL_curstackinfo->si_stack; 615 PL_curstack = PL_curstackinfo->si_stack;
494 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 616 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
495 617
496 PL_stack_base = AvARRAY(PL_curstack); 618 PL_stack_base = AvARRAY(PL_curstack);
497 PL_stack_sp = PL_stack_base; 619 PL_stack_sp = PL_stack_base;
498 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 620 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
499 621
500 New(50,PL_tmps_stack,64,SV*); 622 New(50,PL_tmps_stack,32,SV*);
501 PL_tmps_floor = -1; 623 PL_tmps_floor = -1;
502 PL_tmps_ix = -1; 624 PL_tmps_ix = -1;
503 PL_tmps_max = 64; 625 PL_tmps_max = 32;
504 626
505 New(54,PL_markstack,16,I32); 627 New(54,PL_markstack,16,I32);
506 PL_markstack_ptr = PL_markstack; 628 PL_markstack_ptr = PL_markstack;
507 PL_markstack_max = PL_markstack + 16; 629 PL_markstack_max = PL_markstack + 16;
508 630
509#ifdef SET_MARK_OFFSET 631#ifdef SET_MARK_OFFSET
510 SET_MARK_OFFSET; 632 SET_MARK_OFFSET;
511#endif 633#endif
512 634
513 New(54,PL_scopestack,16,I32); 635 New(54,PL_scopestack,8,I32);
514 PL_scopestack_ix = 0; 636 PL_scopestack_ix = 0;
515 PL_scopestack_max = 16; 637 PL_scopestack_max = 8;
516 638
517 New(54,PL_savestack,64,ANY); 639 New(54,PL_savestack,24,ANY);
518 PL_savestack_ix = 0; 640 PL_savestack_ix = 0;
519 PL_savestack_max = 64; 641 PL_savestack_max = 24;
520 642
521#if !PERL_VERSION_ATLEAST (5,9,0) 643#if !PERL_VERSION_ATLEAST (5,10,0)
522 New(54,PL_retstack,4,OP*); 644 New(54,PL_retstack,4,OP*);
523 PL_retstack_ix = 0; 645 PL_retstack_ix = 0;
524 PL_retstack_max = 4; 646 PL_retstack_max = 4;
525#endif 647#endif
526} 648}
… …
528 650
529/* 651/*
530 * destroy the stacks, the callchain etc... 652 * destroy the stacks, the callchain etc...
531 */ 653 */
532static void 654static void
533coro_destroy_stacks (pTHX) 655coro_destruct_stacks (pTHX)
534{ 656{
535 while (PL_curstackinfo->si_next) 657 while (PL_curstackinfo->si_next)
536 PL_curstackinfo = PL_curstackinfo->si_next; 658 PL_curstackinfo = PL_curstackinfo->si_next;
537 659
538 while (PL_curstackinfo) 660 while (PL_curstackinfo)
… …
549 671
550 Safefree (PL_tmps_stack); 672 Safefree (PL_tmps_stack);
551 Safefree (PL_markstack); 673 Safefree (PL_markstack);
552 Safefree (PL_scopestack); 674 Safefree (PL_scopestack);
553 Safefree (PL_savestack); 675 Safefree (PL_savestack);
554#if !PERL_VERSION_ATLEAST (5,9,0) 676#if !PERL_VERSION_ATLEAST (5,10,0)
555 Safefree (PL_retstack); 677 Safefree (PL_retstack);
556#endif 678#endif
557} 679}
558 680
559static size_t 681static size_t
… …
561{ 683{
562 size_t rss = sizeof (*coro); 684 size_t rss = sizeof (*coro);
563 685
564 if (coro->mainstack) 686 if (coro->mainstack)
565 { 687 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
566 if (coro->flags & CF_RUNNING) 691 if (coro->flags & CF_RUNNING)
567 { 692 {
693 slot = &tmp_slot;
694
568 #define VAR(name,type)coro->name = PL_ ## name; 695 #define VAR(name,type) slot->name = PL_ ## name;
569 # include "state.h" 696 # include "state.h"
570 #undef VAR 697 #undef VAR
571 } 698 }
699 else
700 slot = coro->slot;
572 701
702 if (slot)
703 {
573 rss += sizeof (coro->curstackinfo); 704 rss += sizeof (slot->curstackinfo);
574 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
575 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
576 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
577 rss += coro->tmps_max * sizeof (SV *); 707 rss += slot->tmps_max * sizeof (SV *);
578 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); 708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
579 rss += coro->scopestack_max * sizeof (I32); 709 rss += slot->scopestack_max * sizeof (I32);
580 rss += coro->savestack_max * sizeof (ANY); 710 rss += slot->savestack_max * sizeof (ANY);
581 711
582#if !PERL_VERSION_ATLEAST (5,9,0) 712#if !PERL_VERSION_ATLEAST (5,10,0)
583 rss += coro->retstack_max * sizeof (OP *); 713 rss += slot->retstack_max * sizeof (OP *);
584#endif 714#endif
715 }
585 } 716 }
586 717
587 return rss; 718 return rss;
588} 719}
589 720
590/** coroutine stack handling ************************************************/ 721/** coroutine stack handling ************************************************/
722
723static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
724static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
725static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
726
727/* apparently < 5.8.8 */
728#ifndef MgPV_nolen_const
729#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
730 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
731 (const char*)(mg)->mg_ptr)
732#endif
733
734/*
735 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide
738 * readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */
743static int
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{
746 const char *s = MgPV_nolen_const (mg);
747
748 if (*s == '_')
749 {
750 SV **svp = 0;
751
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754
755 if (svp)
756 {
757 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
758 return 0;
759 }
760 }
761
762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
763}
764
765static int
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{
768 const char *s = MgPV_nolen_const (mg);
769
770 if (*s == '_')
771 {
772 SV **svp = 0;
773
774 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
775 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
776
777 if (svp)
778 {
779 SV *old = *svp;
780 *svp = 0;
781 SvREFCNT_dec (old);
782 return 0;
783 }
784 }
785
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
787}
788
789static int
790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
791{
792 const char *s = MgPV_nolen_const (mg);
793
794 if (*s == '_')
795 {
796 SV **svp = 0;
797
798 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800
801 if (svp)
802 {
803 SV *old = *svp;
804 *svp = newSVsv (sv);
805 SvREFCNT_dec (old);
806 return 0;
807 }
808 }
809
810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
811}
812
813static void
814prepare_nop (pTHX_ struct coro_transfer_args *ta)
815{
816 /* kind of mega-hacky, but works */
817 ta->next = ta->prev = (struct coro *)ta;
818}
819
820static int
821slf_check_nop (pTHX_ struct CoroSLF *frame)
822{
823 return 0;
824}
591 825
592static void 826static void
593coro_setup (pTHX_ struct coro *coro) 827coro_setup (pTHX_ struct coro *coro)
594{ 828{
595 /* 829 /*
… …
600 PL_runops = RUNOPS_DEFAULT; 834 PL_runops = RUNOPS_DEFAULT;
601 PL_curcop = &PL_compiling; 835 PL_curcop = &PL_compiling;
602 PL_in_eval = EVAL_NULL; 836 PL_in_eval = EVAL_NULL;
603 PL_comppad = 0; 837 PL_comppad = 0;
604 PL_curpm = 0; 838 PL_curpm = 0;
839 PL_curpad = 0;
605 PL_localizing = 0; 840 PL_localizing = 0;
606 PL_dirty = 0; 841 PL_dirty = 0;
607 PL_restartop = 0; 842 PL_restartop = 0;
843#if PERL_VERSION_ATLEAST (5,10,0)
844 PL_parser = 0;
845#endif
846
847 /* recreate the die/warn hooks */
848 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
849 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
608 850
609 GvSV (PL_defgv) = NEWSV (0, 0); 851 GvSV (PL_defgv) = newSV (0);
610 GvAV (PL_defgv) = coro->args; coro->args = 0; 852 GvAV (PL_defgv) = coro->args; coro->args = 0;
611 GvSV (PL_errgv) = NEWSV (0, 0); 853 GvSV (PL_errgv) = newSV (0);
612 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 854 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
613 PL_rs = newSVsv (GvSV (irsgv)); 855 PL_rs = newSVsv (GvSV (irsgv));
614 PL_defoutgv = SvREFCNT_inc (stdoutgv); 856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
615 857
616 { 858 {
617 dSP; 859 dSP;
618 LOGOP myop; 860 UNOP myop;
619 861
620 Zero (&myop, 1, LOGOP); 862 Zero (&myop, 1, UNOP);
621 myop.op_next = Nullop; 863 myop.op_next = Nullop;
622 myop.op_flags = OPf_WANT_VOID; 864 myop.op_flags = OPf_WANT_VOID;
623 865
624 PUSHMARK (SP); 866 PUSHMARK (SP);
625 XPUSHs (av_shift (GvAV (PL_defgv))); 867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
626 PUTBACK; 868 PUTBACK;
627 PL_op = (OP *)&myop; 869 PL_op = (OP *)&myop;
628 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
629 SPAGAIN; 871 SPAGAIN;
630 } 872 }
631 873
632 ENTER; /* necessary e.g. for dounwind */ 874 /* this newly created coroutine might be run on an existing cctx which most
875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876 */
877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
633} 879}
634 880
635static void 881static void
636coro_destroy (pTHX_ struct coro *coro) 882coro_destruct (pTHX_ struct coro *coro)
637{ 883{
638 if (!IN_DESTRUCT) 884 if (!IN_DESTRUCT)
639 { 885 {
640 /* restore all saved variables and stuff */ 886 /* restore all saved variables and stuff */
641 LEAVE_SCOPE (0); 887 LEAVE_SCOPE (0);
… …
657 SvREFCNT_dec (GvSV (PL_errgv)); 903 SvREFCNT_dec (GvSV (PL_errgv));
658 SvREFCNT_dec (PL_defoutgv); 904 SvREFCNT_dec (PL_defoutgv);
659 SvREFCNT_dec (PL_rs); 905 SvREFCNT_dec (PL_rs);
660 SvREFCNT_dec (GvSV (irsgv)); 906 SvREFCNT_dec (GvSV (irsgv));
661 907
908 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook);
910
662 SvREFCNT_dec (coro->saved_deffh); 911 SvREFCNT_dec (coro->saved_deffh);
663 //SvREFCNT_dec (coro->throw); 912 SvREFCNT_dec (coro->throw);
664 913
665 coro_destroy_stacks (aTHX); 914 coro_destruct_stacks (aTHX);
666} 915}
667 916
668static void 917INLINE void
669free_coro_mortal (pTHX) 918free_coro_mortal (pTHX)
670{ 919{
671 if (coro_mortal) 920 if (expect_true (coro_mortal))
672 { 921 {
673 SvREFCNT_dec (coro_mortal); 922 SvREFCNT_dec (coro_mortal);
674 coro_mortal = 0; 923 coro_mortal = 0;
675 } 924 }
676} 925}
… …
678static int 927static int
679runops_trace (pTHX) 928runops_trace (pTHX)
680{ 929{
681 COP *oldcop = 0; 930 COP *oldcop = 0;
682 int oldcxix = -2; 931 int oldcxix = -2;
683 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
684 coro_cctx *cctx = coro->cctx; 933 coro_cctx *cctx = coro->cctx;
685 934
686 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
687 { 936 {
688 PERL_ASYNC_CHECK (); 937 PERL_ASYNC_CHECK ();
… …
705 bot = PL_stack_base + cx->blk_oldsp + 1; 954 bot = PL_stack_base + cx->blk_oldsp + 1;
706 top = cx->blk_gimme == G_ARRAY ? SP + 1 955 top = cx->blk_gimme == G_ARRAY ? SP + 1
707 : cx->blk_gimme == G_SCALAR ? bot + 1 956 : cx->blk_gimme == G_SCALAR ? bot + 1
708 : bot; 957 : bot;
709 958
959 av_extend (av, top - bot);
710 while (bot < top) 960 while (bot < top)
711 av_push (av, SvREFCNT_inc (*bot++)); 961 av_push (av, SvREFCNT_inc_NN (*bot++));
712 962
713 PL_runops = RUNOPS_DEFAULT; 963 PL_runops = RUNOPS_DEFAULT;
714 ENTER; 964 ENTER;
715 SAVETMPS; 965 SAVETMPS;
716 EXTEND (SP, 3); 966 EXTEND (SP, 3);
… …
754 SAVETMPS; 1004 SAVETMPS;
755 EXTEND (SP, 3); 1005 EXTEND (SP, 3);
756 PUSHMARK (SP); 1006 PUSHMARK (SP);
757 PUSHs (&PL_sv_yes); 1007 PUSHs (&PL_sv_yes);
758 PUSHs (fullname); 1008 PUSHs (fullname);
759 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1009 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
760 PUTBACK; 1010 PUTBACK;
761 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1011 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
762 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1012 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
763 SPAGAIN; 1013 SPAGAIN;
764 FREETMPS; 1014 FREETMPS;
… …
796 1046
797 TAINT_NOT; 1047 TAINT_NOT;
798 return 0; 1048 return 0;
799} 1049}
800 1050
1051static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1053{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0;
1056}
1057
801/* inject a fake call to Coro::State::_cctx_init into the execution */ 1058/* inject a fake call to Coro::State::_cctx_init into the execution */
802/* _cctx_init should be careful, as it could be called at almost any time */ 1059/* _cctx_init should be careful, as it could be called at almost any time */
803/* during execution of a perl program */ 1060/* during execution of a perl program */
1061/* also initialises PL_top_env */
804static void NOINLINE 1062static void NOINLINE
805prepare_cctx (pTHX_ coro_cctx *cctx) 1063cctx_prepare (pTHX_ coro_cctx *cctx)
806{ 1064{
807 dSP; 1065 dSP;
808 LOGOP myop; 1066 UNOP myop;
809 1067
810 PL_top_env = &PL_start_env; 1068 PL_top_env = &PL_start_env;
811 1069
812 if (cctx->flags & CC_TRACE) 1070 if (cctx->flags & CC_TRACE)
813 PL_runops = runops_trace; 1071 PL_runops = runops_trace;
814 1072
815 Zero (&myop, 1, LOGOP); 1073 Zero (&myop, 1, UNOP);
816 myop.op_next = PL_op; 1074 myop.op_next = PL_op;
817 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
818 1076
819 PUSHMARK (SP); 1077 PUSHMARK (SP);
820 EXTEND (SP, 2); 1078 EXTEND (SP, 2);
821 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1079 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
822 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
823 PUTBACK; 1081 PUTBACK;
824 PL_op = (OP *)&myop; 1082 PL_op = (OP *)&myop;
825 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
826 SPAGAIN; 1084 SPAGAIN;
827} 1085}
828 1086
1087/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void
1089transfer_tail (pTHX)
1090{
1091 free_coro_mortal (aTHX);
1092}
1093
829/* 1094/*
830 * this is a _very_ stripped down perl interpreter ;) 1095 * this is a _very_ stripped down perl interpreter ;)
831 */ 1096 */
832static void 1097static void
833coro_run (void *arg) 1098cctx_run (void *arg)
834{ 1099{
1100#ifdef USE_ITHREADS
1101# if CORO_PTHREAD
1102 PERL_SET_CONTEXT (coro_thx);
1103# endif
1104#endif
1105 {
835 dTHX; 1106 dTHX;
836 1107
837 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1108 /* normally we would need to skip the entersub here */
838 UNLOCK; 1109 /* not doing so will re-execute it, which is exactly what we want */
839
840 /* we now skip the entersub that lead to transfer() */
841 PL_op = PL_op->op_next; 1110 /* PL_nop = PL_nop->op_next */
842 1111
843 /* inject a fake subroutine call to cctx_init */ 1112 /* inject a fake subroutine call to cctx_init */
844 prepare_cctx (aTHX_ (coro_cctx *)arg); 1113 cctx_prepare (aTHX_ (coro_cctx *)arg);
845 1114
1115 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX);
1117
846 /* somebody or something will hit me for both perl_run and PL_restartop */ 1118 /* somebody or something will hit me for both perl_run and PL_restartop */
847 PL_restartop = PL_op; 1119 PL_restartop = PL_op;
848 perl_run (PL_curinterp); 1120 perl_run (PL_curinterp);
849 1121
850 /* 1122 /*
851 * If perl-run returns we assume exit() was being called or the coro 1123 * If perl-run returns we assume exit() was being called or the coro
852 * fell off the end, which seems to be the only valid (non-bug) 1124 * fell off the end, which seems to be the only valid (non-bug)
853 * reason for perl_run to return. We try to exit by jumping to the 1125 * reason for perl_run to return. We try to exit by jumping to the
854 * bootstrap-time "top" top_env, as we cannot restore the "main" 1126 * bootstrap-time "top" top_env, as we cannot restore the "main"
855 * coroutine as Coro has no such concept 1127 * coroutine as Coro has no such concept
856 */ 1128 */
857 PL_top_env = main_top_env; 1129 PL_top_env = main_top_env;
858 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1130 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1131 }
859} 1132}
860 1133
861static coro_cctx * 1134static coro_cctx *
862cctx_new () 1135cctx_new ()
863{ 1136{
864 coro_cctx *cctx; 1137 coro_cctx *cctx;
1138
1139 ++cctx_count;
1140 New (0, cctx, 1, coro_cctx);
1141
1142 cctx->gen = cctx_gen;
1143 cctx->flags = 0;
1144 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1145
1146 return cctx;
1147}
1148
1149/* create a new cctx only suitable as source */
1150static coro_cctx *
1151cctx_new_empty ()
1152{
1153 coro_cctx *cctx = cctx_new ();
1154
1155 cctx->sptr = 0;
1156 coro_create (&cctx->cctx, 0, 0, 0, 0);
1157
1158 return cctx;
1159}
1160
1161/* create a new cctx suitable as destination/running a perl interpreter */
1162static coro_cctx *
1163cctx_new_run ()
1164{
1165 coro_cctx *cctx = cctx_new ();
865 void *stack_start; 1166 void *stack_start;
866 size_t stack_size; 1167 size_t stack_size;
867 1168
868 ++cctx_count;
869
870 Newz (0, cctx, 1, coro_cctx);
871
872#if HAVE_MMAP 1169#if HAVE_MMAP
873
874 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1170 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
875 /* mmap supposedly does allocate-on-write for us */ 1171 /* mmap supposedly does allocate-on-write for us */
876 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1172 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
877 1173
878 if (cctx->sptr != (void *)-1) 1174 if (cctx->sptr != (void *)-1)
879 { 1175 {
880# if CORO_STACKGUARD 1176 #if CORO_STACKGUARD
881 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1177 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
882# endif 1178 #endif
883 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1179 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
884 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1180 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
885 cctx->flags |= CC_MAPPED; 1181 cctx->flags |= CC_MAPPED;
886 } 1182 }
887 else 1183 else
888#endif 1184#endif
889 { 1185 {
890 cctx->ssize = coro_stacksize * (long)sizeof (long); 1186 cctx->ssize = cctx_stacksize * (long)sizeof (long);
891 New (0, cctx->sptr, coro_stacksize, long); 1187 New (0, cctx->sptr, cctx_stacksize, long);
892 1188
893 if (!cctx->sptr) 1189 if (!cctx->sptr)
894 { 1190 {
895 perror ("FATAL: unable to allocate stack for coroutine"); 1191 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
896 _exit (EXIT_FAILURE); 1192 _exit (EXIT_FAILURE);
897 } 1193 }
898 1194
899 stack_start = cctx->sptr; 1195 stack_start = cctx->sptr;
900 stack_size = cctx->ssize; 1196 stack_size = cctx->ssize;
901 } 1197 }
902 1198
903 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1199 #if CORO_USE_VALGRIND
1200 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1201 #endif
1202
904 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1203 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
905 1204
906 return cctx; 1205 return cctx;
907} 1206}
908 1207
909static void 1208static void
… …
911{ 1210{
912 if (!cctx) 1211 if (!cctx)
913 return; 1212 return;
914 1213
915 --cctx_count; 1214 --cctx_count;
1215 coro_destroy (&cctx->cctx);
916 1216
1217 /* coro_transfer creates new, empty cctx's */
1218 if (cctx->sptr)
1219 {
917#if CORO_USE_VALGRIND 1220 #if CORO_USE_VALGRIND
918 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1221 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
919#endif 1222 #endif
920 1223
921#if HAVE_MMAP 1224#if HAVE_MMAP
922 if (cctx->flags & CC_MAPPED) 1225 if (cctx->flags & CC_MAPPED)
923 munmap (cctx->sptr, cctx->ssize); 1226 munmap (cctx->sptr, cctx->ssize);
924 else 1227 else
925#endif 1228#endif
926 Safefree (cctx->sptr); 1229 Safefree (cctx->sptr);
1230 }
927 1231
928 Safefree (cctx); 1232 Safefree (cctx);
929} 1233}
1234
1235/* wether this cctx should be destructed */
1236#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
930 1237
931static coro_cctx * 1238static coro_cctx *
932cctx_get (pTHX) 1239cctx_get (pTHX)
933{ 1240{
934 while (cctx_first) 1241 while (expect_true (cctx_first))
935 { 1242 {
936 coro_cctx *cctx = cctx_first; 1243 coro_cctx *cctx = cctx_first;
937 cctx_first = cctx->next; 1244 cctx_first = cctx->next;
938 --cctx_idle; 1245 --cctx_idle;
939 1246
940 if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE)) 1247 if (expect_true (!CCTX_EXPIRED (cctx)))
941 return cctx; 1248 return cctx;
942 1249
943 cctx_destroy (cctx); 1250 cctx_destroy (cctx);
944 } 1251 }
945 1252
946 return cctx_new (); 1253 return cctx_new_run ();
947} 1254}
948 1255
949static void 1256static void
950cctx_put (coro_cctx *cctx) 1257cctx_put (coro_cctx *cctx)
951{ 1258{
1259 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1260
952 /* free another cctx if overlimit */ 1261 /* free another cctx if overlimit */
953 if (cctx_idle >= MAX_IDLE_CCTX) 1262 if (expect_false (cctx_idle >= cctx_max_idle))
954 { 1263 {
955 coro_cctx *first = cctx_first; 1264 coro_cctx *first = cctx_first;
956 cctx_first = first->next; 1265 cctx_first = first->next;
957 --cctx_idle; 1266 --cctx_idle;
958 1267
… …
964 cctx_first = cctx; 1273 cctx_first = cctx;
965} 1274}
966 1275
967/** coroutine switching *****************************************************/ 1276/** coroutine switching *****************************************************/
968 1277
969static void NOINLINE 1278static void
970transfer_check (pTHX_ struct coro *prev, struct coro *next) 1279transfer_check (pTHX_ struct coro *prev, struct coro *next)
971{ 1280{
972 if (prev != next) 1281 if (expect_true (prev != next))
973 { 1282 {
974 if (!(prev->flags & (CF_RUNNING | CF_NEW))) 1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
975 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
976 1285
977 if (next->flags & CF_RUNNING) 1286 if (expect_false (next->flags & CF_RUNNING))
978 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
979 1288
980 if (next->flags & CF_DESTROYED) 1289 if (expect_false (next->flags & CF_DESTROYED))
981 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1290 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
982 1291
1292#if !PERL_VERSION_ATLEAST (5,10,0)
983 if (PL_lex_state != LEX_NOTPARSING) 1293 if (expect_false (PL_lex_state != LEX_NOTPARSING))
984 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1294 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1295#endif
985 } 1296 }
986} 1297}
987 1298
988/* always use the TRANSFER macro */ 1299/* always use the TRANSFER macro */
989static void NOINLINE 1300static void NOINLINE
990transfer (pTHX_ struct coro *prev, struct coro *next) 1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
991{ 1302{
992 dSTACKLEVEL; 1303 dSTACKLEVEL;
993 1304
994 /* sometimes transfer is only called to set idle_sp */ 1305 /* sometimes transfer is only called to set idle_sp */
995 if (!next) 1306 if (expect_false (!next))
996 { 1307 {
997 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
998 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
999 } 1310 }
1000 else if (prev != next) 1311 else if (expect_true (prev != next))
1001 { 1312 {
1002 coro_cctx *prev__cctx; 1313 coro_cctx *prev__cctx;
1003 1314
1004 if (prev->flags & CF_NEW) 1315 if (expect_false (prev->flags & CF_NEW))
1005 { 1316 {
1006 /* create a new empty context */ 1317 /* create a new empty/source context */
1007 Newz (0, prev->cctx, 1, coro_cctx); 1318 prev->cctx = cctx_new_empty ();
1008 prev->flags &= ~CF_NEW; 1319 prev->flags &= ~CF_NEW;
1009 prev->flags |= CF_RUNNING; 1320 prev->flags |= CF_RUNNING;
1010 } 1321 }
1011 1322
1012 prev->flags &= ~CF_RUNNING; 1323 prev->flags &= ~CF_RUNNING;
1013 next->flags |= CF_RUNNING; 1324 next->flags |= CF_RUNNING;
1014 1325
1015 LOCK; 1326 /* first get rid of the old state */
1327 save_perl (aTHX_ prev);
1016 1328
1017 if (next->flags & CF_NEW) 1329 if (expect_false (next->flags & CF_NEW))
1018 { 1330 {
1019 /* need to start coroutine */ 1331 /* need to start coroutine */
1020 next->flags &= ~CF_NEW; 1332 next->flags &= ~CF_NEW;
1021 /* first get rid of the old state */
1022 save_perl (aTHX_ prev);
1023 /* setup coroutine call */ 1333 /* setup coroutine call */
1024 coro_setup (aTHX_ next); 1334 coro_setup (aTHX_ next);
1025 } 1335 }
1026 else 1336 else
1337 load_perl (aTHX_ next);
1338
1339 prev__cctx = prev->cctx;
1340
1341 /* possibly untie and reuse the cctx */
1342 if (expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel
1344 && !(prev__cctx->flags & CC_TRACE)
1345 && !force_cctx
1346 ))
1027 { 1347 {
1028 /* coroutine already started */
1029 save_perl (aTHX_ prev);
1030 load_perl (aTHX_ next);
1031 }
1032
1033 prev__cctx = prev->cctx;
1034
1035 /* possibly "free" the cctx */
1036 if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
1037 {
1038 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1039 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1349 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1040 1350
1041 prev->cctx = 0; 1351 prev->cctx = 0;
1352
1353 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1354 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1355 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1356 if (!next->cctx)
1357 next->cctx = cctx_get (aTHX);
1042 1358
1043 cctx_put (prev__cctx); 1359 cctx_put (prev__cctx);
1044 } 1360 }
1045 1361
1046 ++next->usecount; 1362 ++next->usecount;
1047 1363
1048 if (!next->cctx) 1364 if (expect_true (!next->cctx))
1049 next->cctx = cctx_get (aTHX); 1365 next->cctx = cctx_get (aTHX);
1050 1366
1051 if (prev__cctx != next->cctx) 1367 if (expect_false (prev__cctx != next->cctx))
1052 { 1368 {
1053 prev__cctx->top_env = PL_top_env; 1369 prev__cctx->top_env = PL_top_env;
1054 PL_top_env = next->cctx->top_env; 1370 PL_top_env = next->cctx->top_env;
1055 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1056 } 1372 }
1057 1373
1058 free_coro_mortal (aTHX); 1374 transfer_tail (aTHX);
1059 UNLOCK;
1060 } 1375 }
1061} 1376}
1062 1377
1063struct transfer_args
1064{
1065 struct coro *prev, *next;
1066};
1067
1068#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1378#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1069#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1379#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1070 1380
1071/** high level stuff ********************************************************/ 1381/** high level stuff ********************************************************/
1072 1382
1073static int 1383static int
1074coro_state_destroy (pTHX_ struct coro *coro) 1384coro_state_destroy (pTHX_ struct coro *coro)
1075{ 1385{
1076 if (coro->flags & CF_DESTROYED) 1386 if (coro->flags & CF_DESTROYED)
1077 return 0; 1387 return 0;
1388
1389 if (coro->on_destroy)
1390 coro->on_destroy (aTHX_ coro);
1078 1391
1079 coro->flags |= CF_DESTROYED; 1392 coro->flags |= CF_DESTROYED;
1080 1393
1081 if (coro->flags & CF_READY) 1394 if (coro->flags & CF_READY)
1082 { 1395 {
1083 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1396 /* reduce nready, as destroying a ready coro effectively unreadies it */
1084 /* alternative: look through all ready queues and remove the coro */ 1397 /* alternative: look through all ready queues and remove the coro */
1085 LOCK;
1086 --coro_nready; 1398 --coro_nready;
1087 UNLOCK;
1088 } 1399 }
1089 else 1400 else
1090 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1091 1402
1092 if (coro->mainstack && coro->mainstack != main_mainstack) 1403 if (coro->mainstack && coro->mainstack != main_mainstack)
1093 { 1404 {
1094 struct coro temp; 1405 struct coro temp;
1095 1406
1096 if (coro->flags & CF_RUNNING) 1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1097 croak ("FATAL: tried to destroy currently running coroutine");
1098 1408
1099 save_perl (aTHX_ &temp); 1409 save_perl (aTHX_ &temp);
1100 load_perl (aTHX_ coro); 1410 load_perl (aTHX_ coro);
1101 1411
1102 coro_destroy (aTHX_ coro); 1412 coro_destruct (aTHX_ coro);
1103 1413
1104 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1414 load_perl (aTHX_ &temp);
1105 1415
1106 coro->mainstack = 0; 1416 coro->slot = 0;
1107 } 1417 }
1108 1418
1109 cctx_destroy (coro->cctx); 1419 cctx_destroy (coro->cctx);
1110 SvREFCNT_dec (coro->args); 1420 SvREFCNT_dec (coro->args);
1111 1421
… …
1153# define MGf_DUP 0 1463# define MGf_DUP 0
1154#endif 1464#endif
1155}; 1465};
1156 1466
1157static void 1467static void
1158prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1468prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1159{ 1469{
1160 ta->prev = SvSTATE (prev_sv); 1470 ta->prev = SvSTATE (prev_sv);
1161 ta->next = SvSTATE (next_sv); 1471 ta->next = SvSTATE (next_sv);
1162 TRANSFER_CHECK (*ta); 1472 TRANSFER_CHECK (*ta);
1163} 1473}
1164 1474
1165static void 1475static void
1166api_transfer (SV *prev_sv, SV *next_sv) 1476api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1167{ 1477{
1168 dTHX;
1169 struct transfer_args ta; 1478 struct coro_transfer_args ta;
1170 1479
1171 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1480 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1172 TRANSFER (ta); 1481 TRANSFER (ta, 1);
1173} 1482}
1174 1483
1175/** Coro ********************************************************************/ 1484/** Coro ********************************************************************/
1176 1485
1177static void 1486INLINE void
1178coro_enq (pTHX_ SV *coro_sv) 1487coro_enq (pTHX_ struct coro *coro)
1179{ 1488{
1180 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1489 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1181} 1490}
1182 1491
1183static SV * 1492INLINE SV *
1184coro_deq (pTHX_ int min_prio) 1493coro_deq (pTHX)
1185{ 1494{
1186 int prio = PRIO_MAX - PRIO_MIN; 1495 int prio;
1187 1496
1188 min_prio -= PRIO_MIN;
1189 if (min_prio < 0)
1190 min_prio = 0;
1191
1192 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1497 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1193 if (AvFILLp (coro_ready [prio]) >= 0) 1498 if (AvFILLp (coro_ready [prio]) >= 0)
1194 return av_shift (coro_ready [prio]); 1499 return av_shift (coro_ready [prio]);
1195 1500
1196 return 0; 1501 return 0;
1197} 1502}
1198 1503
1199static int 1504static int
1200api_ready (SV *coro_sv) 1505api_ready (pTHX_ SV *coro_sv)
1201{ 1506{
1202 dTHX;
1203 struct coro *coro; 1507 struct coro *coro;
1508 SV *sv_hook;
1509 void (*xs_hook)(void);
1204 1510
1205 if (SvROK (coro_sv)) 1511 if (SvROK (coro_sv))
1206 coro_sv = SvRV (coro_sv); 1512 coro_sv = SvRV (coro_sv);
1207 1513
1208 coro = SvSTATE (coro_sv); 1514 coro = SvSTATE (coro_sv);
… …
1210 if (coro->flags & CF_READY) 1516 if (coro->flags & CF_READY)
1211 return 0; 1517 return 0;
1212 1518
1213 coro->flags |= CF_READY; 1519 coro->flags |= CF_READY;
1214 1520
1215 LOCK; 1521 sv_hook = coro_nready ? 0 : coro_readyhook;
1216 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1522 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1523
1524 coro_enq (aTHX_ coro);
1217 ++coro_nready; 1525 ++coro_nready;
1218 UNLOCK; 1526
1527 if (sv_hook)
1528 {
1529 dSP;
1530
1531 ENTER;
1532 SAVETMPS;
1533
1534 PUSHMARK (SP);
1535 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD);
1537 SPAGAIN;
1538
1539 FREETMPS;
1540 LEAVE;
1541 }
1542
1543 if (xs_hook)
1544 xs_hook ();
1219 1545
1220 return 1; 1546 return 1;
1221} 1547}
1222 1548
1223static int 1549static int
1224api_is_ready (SV *coro_sv) 1550api_is_ready (pTHX_ SV *coro_sv)
1225{ 1551{
1226 dTHX;
1227 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1552 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1228} 1553}
1229 1554
1230static void 1555INLINE void
1231prepare_schedule (pTHX_ struct transfer_args *ta) 1556prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1232{ 1557{
1233 SV *prev_sv, *next_sv; 1558 SV *prev_sv, *next_sv;
1234 1559
1235 for (;;) 1560 for (;;)
1236 { 1561 {
1237 LOCK;
1238 next_sv = coro_deq (aTHX_ PRIO_MIN); 1562 next_sv = coro_deq (aTHX);
1239 1563
1240 /* nothing to schedule: call the idle handler */ 1564 /* nothing to schedule: call the idle handler */
1241 if (!next_sv) 1565 if (expect_false (!next_sv))
1242 { 1566 {
1243 dSP; 1567 dSP;
1244 UNLOCK;
1245 1568
1246 ENTER; 1569 ENTER;
1247 SAVETMPS; 1570 SAVETMPS;
1248 1571
1249 PUSHMARK (SP); 1572 PUSHMARK (SP);
1250 PUTBACK; 1573 PUTBACK;
1251 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1575 SPAGAIN;
1252 1576
1253 FREETMPS; 1577 FREETMPS;
1254 LEAVE; 1578 LEAVE;
1255 continue; 1579 continue;
1256 } 1580 }
1257 1581
1258 ta->next = SvSTATE (next_sv); 1582 ta->next = SvSTATE_hv (next_sv);
1259 1583
1260 /* cannot transfer to destroyed coros, skip and look for next */ 1584 /* cannot transfer to destroyed coros, skip and look for next */
1261 if (ta->next->flags & CF_DESTROYED) 1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1262 { 1586 {
1263 UNLOCK;
1264 SvREFCNT_dec (next_sv); 1587 SvREFCNT_dec (next_sv);
1265 /* coro_nready is already taken care of by destroy */ 1588 /* coro_nready has already been taken care of by destroy */
1266 continue; 1589 continue;
1267 } 1590 }
1268 1591
1269 --coro_nready; 1592 --coro_nready;
1270 UNLOCK;
1271 break; 1593 break;
1272 } 1594 }
1273 1595
1274 /* free this only after the transfer */ 1596 /* free this only after the transfer */
1275 prev_sv = SvRV (coro_current); 1597 prev_sv = SvRV (coro_current);
1276 ta->prev = SvSTATE (prev_sv); 1598 ta->prev = SvSTATE_hv (prev_sv);
1277 TRANSFER_CHECK (*ta); 1599 TRANSFER_CHECK (*ta);
1278 assert (ta->next->flags & CF_READY); 1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1279 ta->next->flags &= ~CF_READY; 1601 ta->next->flags &= ~CF_READY;
1280 SvRV_set (coro_current, next_sv); 1602 SvRV_set (coro_current, next_sv);
1281 1603
1282 LOCK;
1283 free_coro_mortal (aTHX); 1604 free_coro_mortal (aTHX);
1284 coro_mortal = prev_sv; 1605 coro_mortal = prev_sv;
1285 UNLOCK;
1286} 1606}
1287 1607
1288static void 1608INLINE void
1289prepare_cede (pTHX_ struct transfer_args *ta) 1609prepare_cede (pTHX_ struct coro_transfer_args *ta)
1290{ 1610{
1291 api_ready (coro_current); 1611 api_ready (aTHX_ coro_current);
1292 prepare_schedule (aTHX_ ta); 1612 prepare_schedule (aTHX_ ta);
1293} 1613}
1294 1614
1615INLINE void
1616prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1617{
1618 SV *prev = SvRV (coro_current);
1619
1620 if (coro_nready)
1621 {
1622 prepare_schedule (aTHX_ ta);
1623 api_ready (aTHX_ prev);
1624 }
1625 else
1626 prepare_nop (aTHX_ ta);
1627}
1628
1629static void
1630api_schedule (pTHX)
1631{
1632 struct coro_transfer_args ta;
1633
1634 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1);
1636}
1637
1295static int 1638static int
1296prepare_cede_notself (pTHX_ struct transfer_args *ta) 1639api_cede (pTHX)
1297{ 1640{
1298 if (coro_nready) 1641 struct coro_transfer_args ta;
1299 { 1642
1300 SV *prev = SvRV (coro_current);
1301 prepare_schedule (aTHX_ ta); 1643 prepare_cede (aTHX_ &ta);
1302 api_ready (prev); 1644
1645 if (expect_true (ta.prev != ta.next))
1646 {
1647 TRANSFER (ta, 1);
1303 return 1; 1648 return 1;
1304 } 1649 }
1305 else 1650 else
1306 return 0; 1651 return 0;
1307} 1652}
1308 1653
1309static void
1310api_schedule (void)
1311{
1312 dTHX;
1313 struct transfer_args ta;
1314
1315 prepare_schedule (aTHX_ &ta);
1316 TRANSFER (ta);
1317}
1318
1319static int 1654static int
1320api_cede (void) 1655api_cede_notself (pTHX)
1321{ 1656{
1322 dTHX; 1657 if (coro_nready)
1658 {
1323 struct transfer_args ta; 1659 struct coro_transfer_args ta;
1324 1660
1325 prepare_cede (aTHX_ &ta); 1661 prepare_cede_notself (aTHX_ &ta);
1326
1327 if (ta.prev != ta.next)
1328 {
1329 TRANSFER (ta); 1662 TRANSFER (ta, 1);
1330 return 1; 1663 return 1;
1331 } 1664 }
1332 else 1665 else
1333 return 0; 1666 return 0;
1334} 1667}
1335 1668
1336static int 1669static void
1337api_cede_notself (void)
1338{
1339 dTHX;
1340 struct transfer_args ta;
1341
1342 if (prepare_cede_notself (aTHX_ &ta))
1343 {
1344 TRANSFER (ta);
1345 return 1;
1346 }
1347 else
1348 return 0;
1349}
1350
1351static void
1352api_trace (SV *coro_sv, int flags) 1670api_trace (pTHX_ SV *coro_sv, int flags)
1353{ 1671{
1354 dTHX;
1355 struct coro *coro = SvSTATE (coro_sv); 1672 struct coro *coro = SvSTATE (coro_sv);
1356 1673
1357 if (flags & CC_TRACE) 1674 if (flags & CC_TRACE)
1358 { 1675 {
1359 if (!coro->cctx) 1676 if (!coro->cctx)
1360 coro->cctx = cctx_new (); 1677 coro->cctx = cctx_new_run ();
1361 else if (!(coro->cctx->flags & CC_TRACE)) 1678 else if (!(coro->cctx->flags & CC_TRACE))
1362 croak ("cannot enable tracing on coroutine with custom stack"); 1679 croak ("cannot enable tracing on coroutine with custom stack,");
1363 1680
1364 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1365 } 1682 }
1366 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1367 { 1684 {
1368 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); 1685 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1369 1686
1370 if (coro->flags & CF_RUNNING) 1687 if (coro->flags & CF_RUNNING)
1371 PL_runops = RUNOPS_DEFAULT; 1688 PL_runops = RUNOPS_DEFAULT;
1372 else 1689 else
1373 coro->runops = RUNOPS_DEFAULT; 1690 coro->slot->runops = RUNOPS_DEFAULT;
1691 }
1692}
1693
1694/*****************************************************************************/
1695/* PerlIO::cede */
1696
1697typedef struct
1698{
1699 PerlIOBuf base;
1700 NV next, every;
1701} PerlIOCede;
1702
1703static IV
1704PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1705{
1706 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1707
1708 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1709 self->next = nvtime () + self->every;
1710
1711 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1712}
1713
1714static SV *
1715PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1716{
1717 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1718
1719 return newSVnv (self->every);
1720}
1721
1722static IV
1723PerlIOCede_flush (pTHX_ PerlIO *f)
1724{
1725 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1726 double now = nvtime ();
1727
1728 if (now >= self->next)
1729 {
1730 api_cede (aTHX);
1731 self->next = now + self->every;
1732 }
1733
1734 return PerlIOBuf_flush (aTHX_ f);
1735}
1736
1737static PerlIO_funcs PerlIO_cede =
1738{
1739 sizeof(PerlIO_funcs),
1740 "cede",
1741 sizeof(PerlIOCede),
1742 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1743 PerlIOCede_pushed,
1744 PerlIOBuf_popped,
1745 PerlIOBuf_open,
1746 PerlIOBase_binmode,
1747 PerlIOCede_getarg,
1748 PerlIOBase_fileno,
1749 PerlIOBuf_dup,
1750 PerlIOBuf_read,
1751 PerlIOBuf_unread,
1752 PerlIOBuf_write,
1753 PerlIOBuf_seek,
1754 PerlIOBuf_tell,
1755 PerlIOBuf_close,
1756 PerlIOCede_flush,
1757 PerlIOBuf_fill,
1758 PerlIOBase_eof,
1759 PerlIOBase_error,
1760 PerlIOBase_clearerr,
1761 PerlIOBase_setlinebuf,
1762 PerlIOBuf_get_base,
1763 PerlIOBuf_bufsiz,
1764 PerlIOBuf_get_ptr,
1765 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt,
1767};
1768
1769/*****************************************************************************/
1770
1771static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1772static const CV *slf_cv;
1773static SV *slf_arg0;
1774static SV *slf_arg1;
1775static SV *slf_arg2;
1776static I32 slf_ax; /* top of stack, for restore */
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP *
1782pp_restore (pTHX)
1783{
1784 SV **SP = PL_stack_base + slf_ax;
1785
1786 PUSHMARK (SP);
1787
1788 EXTEND (SP, 3);
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1792 PUSHs ((SV *)CvGV (slf_cv));
1793
1794 RETURNOP (slf_restore.op_first);
1795}
1796
1797static void
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 {
1928 dSP;
1929 SV **bot = PL_stack_base + checkmark;
1930 int gimme = GIMME_V;
1931
1932 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1933
1934 /* make sure we put something on the stack in scalar context */
1935 if (gimme == G_SCALAR)
1936 {
1937 if (sp == bot)
1938 XPUSHs (&PL_sv_undef);
1939
1940 SP = bot + 1;
1374 } 1941 }
1942
1943 PUTBACK;
1944 }
1945
1946 {
1947 struct coro *coro = SvSTATE_current;
1948
1949 if (expect_false (coro->throw))
1950 {
1951 SV *exception = sv_2mortal (coro->throw);
1952
1953 coro->throw = 0;
1954 sv_setsv (ERRSV, exception);
1955 croak (0);
1956 }
1957 }
1958
1959 return NORMAL;
1375} 1960}
1961
1962static void
1963api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1964{
1965 SV **arg = PL_stack_base + ax;
1966 int items = PL_stack_sp - arg + 1;
1967
1968 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1969
1970 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1971 && PL_op->op_ppaddr != pp_slf)
1972 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1973
1974#if 0
1975 if (items > 3)
1976 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1977#endif
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_CUSTOM;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1992 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1993 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1994 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1995
1996 PL_op->op_ppaddr = pp_slf;
1997 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1998
1999 PL_op = (OP *)&slf_restore;
2000}
2001
2002/*****************************************************************************/
2003
2004static void
2005coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2006{
2007 SV *count_sv = AvARRAY (av)[0];
2008 IV count = SvIVX (count_sv);
2009
2010 count += adjust;
2011 SvIVX (count_sv) = count;
2012
2013 /* now wake up as many waiters as are expected to lock */
2014 while (count > 0 && AvFILLp (av) > 0)
2015 {
2016 SV *cb;
2017
2018 /* swap first two elements so we can shift a waiter */
2019 AvARRAY (av)[0] = AvARRAY (av)[1];
2020 AvARRAY (av)[1] = count_sv;
2021 cb = av_shift (av);
2022
2023 if (SvOBJECT (cb))
2024 api_ready (aTHX_ cb);
2025 else
2026 croak ("callbacks not yet supported");
2027
2028 SvREFCNT_dec (cb);
2029
2030 --count;
2031 }
2032}
2033
2034static void
2035coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2036{
2037 /* call $sem->adjust (0) to possibly wake up some other waiters */
2038 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2039}
2040
2041static int
2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2043{
2044 AV *av = (AV *)frame->data;
2045 SV *count_sv = AvARRAY (av)[0];
2046
2047 if (SvIVX (count_sv) > 0)
2048 {
2049 SvSTATE_current->on_destroy = 0;
2050 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2051 return 0;
2052 }
2053 else
2054 {
2055 int i;
2056 /* if we were woken up but can't down, we look through the whole */
2057 /* waiters list and only add us if we aren't in there already */
2058 /* this avoids some degenerate memory usage cases */
2059
2060 for (i = 1; i <= AvFILLp (av); ++i)
2061 if (AvARRAY (av)[i] == SvRV (coro_current))
2062 return 1;
2063
2064 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2065 return 1;
2066 }
2067}
2068
2069static void
2070slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2071{
2072 AV *av = (AV *)SvRV (arg [0]);
2073
2074 if (SvIVX (AvARRAY (av)[0]) > 0)
2075 {
2076 frame->data = (void *)av;
2077 frame->prepare = prepare_nop;
2078 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2079 }
2080 else
2081 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule;
2086
2087 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 assert (!SvSTATE_current->on_destroy);//D
2090 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2091 }
2092
2093 frame->check = slf_check_semaphore_down;
2094
2095}
2096
2097/*****************************************************************************/
2098
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2100
2101/* create a closure from XS, returns a code reference */
2102/* the arg can be accessed via GENSUB_ARG from the callback */
2103/* the callback must use dXSARGS/XSRETURN */
2104static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2106{
2107 CV *cv = (CV *)NEWSV (0, 0);
2108
2109 sv_upgrade ((SV *)cv, SVt_PVCV);
2110
2111 CvANON_on (cv);
2112 CvISXSUB_on (cv);
2113 CvXSUB (cv) = xsub;
2114 GENSUB_ARG = arg;
2115
2116 return newRV_noinc ((SV *)cv);
2117}
2118
2119/*****************************************************************************/
1376 2120
1377MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1378 2122
1379PROTOTYPES: DISABLE 2123PROTOTYPES: DISABLE
1380 2124
1381BOOT: 2125BOOT:
1382{ 2126{
1383#ifdef USE_ITHREADS 2127#ifdef USE_ITHREADS
1384 MUTEX_INIT (&coro_mutex); 2128# if CORO_PTHREAD
2129 coro_thx = PERL_GET_CONTEXT;
2130# endif
1385#endif 2131#endif
1386 BOOT_PAGESIZE; 2132 BOOT_PAGESIZE;
1387 2133
1388 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2134 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1389 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2135 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2136
2137 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2138 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2139 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2140
2141 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2142 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2143 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1390 2144
1391 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2145 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1392 2146
1393 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2147 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1394 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2148 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1399 main_top_env = PL_top_env; 2153 main_top_env = PL_top_env;
1400 2154
1401 while (main_top_env->je_prev) 2155 while (main_top_env->je_prev)
1402 main_top_env = main_top_env->je_prev; 2156 main_top_env = main_top_env->je_prev;
1403 2157
2158 {
2159 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2160
2161 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2162 hv_store_ent (PL_custom_op_names, slf,
2163 newSVpv ("coro_slf", 0), 0);
2164
2165 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2166 hv_store_ent (PL_custom_op_descs, slf,
2167 newSVpv ("coro schedule like function", 0), 0);
2168 }
2169
1404 coroapi.ver = CORO_API_VERSION; 2170 coroapi.ver = CORO_API_VERSION;
2171 coroapi.rev = CORO_API_REVISION;
2172
1405 coroapi.transfer = api_transfer; 2173 coroapi.transfer = api_transfer;
2174
2175 coroapi.sv_state = SvSTATE_;
2176 coroapi.execute_slf = api_execute_slf;
2177 coroapi.prepare_nop = prepare_nop;
2178 coroapi.prepare_schedule = prepare_schedule;
2179 coroapi.prepare_cede = prepare_cede;
2180 coroapi.prepare_cede_notself = prepare_cede_notself;
2181
2182 {
2183 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2184
2185 if (!svp) croak ("Time::HiRes is required");
2186 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2187
2188 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2189 }
1406 2190
1407 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2191 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1408} 2192}
1409 2193
1410SV * 2194SV *
1411new (char *klass, ...) 2195new (char *klass, ...)
1412 CODE: 2196 CODE:
1413{ 2197{
1414 struct coro *coro; 2198 struct coro *coro;
2199 MAGIC *mg;
1415 HV *hv; 2200 HV *hv;
1416 int i; 2201 int i;
1417 2202
1418 Newz (0, coro, 1, struct coro); 2203 Newz (0, coro, 1, struct coro);
1419 coro->args = newAV (); 2204 coro->args = newAV ();
… …
1422 if (coro_first) coro_first->prev = coro; 2207 if (coro_first) coro_first->prev = coro;
1423 coro->next = coro_first; 2208 coro->next = coro_first;
1424 coro_first = coro; 2209 coro_first = coro;
1425 2210
1426 coro->hv = hv = newHV (); 2211 coro->hv = hv = newHV ();
1427 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2212 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2213 mg->mg_flags |= MGf_DUP;
1428 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2214 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1429 2215
2216 av_extend (coro->args, items - 1);
1430 for (i = 1; i < items; i++) 2217 for (i = 1; i < items; i++)
1431 av_push (coro->args, newSVsv (ST (i))); 2218 av_push (coro->args, newSVsv (ST (i)));
1432} 2219}
1433 OUTPUT: 2220 OUTPUT:
1434 RETVAL 2221 RETVAL
1435 2222
1436# these not obviously related functions are all rolled into the same xs
1437# function to increase chances that they all will call transfer with the same
1438# stack offset
1439void 2223void
1440_set_stacklevel (...) 2224_set_stacklevel (...)
1441 ALIAS: 2225 CODE:
1442 Coro::State::transfer = 1 2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
1443 Coro::schedule = 2
1444 Coro::cede = 3
1445 Coro::cede_notself = 4
1446 CODE:
1447{
1448 struct transfer_args ta;
1449 2227
1450 switch (ix) 2228void
1451 { 2229transfer (...)
1452 case 0: 2230 PROTOTYPE: $$
1453 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2231 CODE:
1454 ta.next = 0; 2232 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1455 break;
1456
1457 case 1:
1458 if (items != 2)
1459 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1460
1461 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1462 break;
1463
1464 case 2:
1465 prepare_schedule (aTHX_ &ta);
1466 break;
1467
1468 case 3:
1469 prepare_cede (aTHX_ &ta);
1470 break;
1471
1472 case 4:
1473 if (!prepare_cede_notself (aTHX_ &ta))
1474 XSRETURN_EMPTY;
1475
1476 break;
1477 }
1478
1479 BARRIER;
1480 TRANSFER (ta);
1481
1482 if (GIMME_V != G_VOID && ta.next != ta.prev)
1483 XSRETURN_YES;
1484}
1485 2233
1486bool 2234bool
1487_destroy (SV *coro_sv) 2235_destroy (SV *coro_sv)
1488 CODE: 2236 CODE:
1489 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2237 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1490 OUTPUT: 2238 OUTPUT:
1491 RETVAL 2239 RETVAL
1492 2240
1493void 2241void
1494_exit (code) 2242_exit (int code)
1495 int code
1496 PROTOTYPE: $ 2243 PROTOTYPE: $
1497 CODE: 2244 CODE:
1498 _exit (code); 2245 _exit (code);
1499 2246
1500int 2247int
1501cctx_stacksize (int new_stacksize = 0) 2248cctx_stacksize (int new_stacksize = 0)
2249 PROTOTYPE: ;$
1502 CODE: 2250 CODE:
1503 RETVAL = coro_stacksize; 2251 RETVAL = cctx_stacksize;
1504 if (new_stacksize) 2252 if (new_stacksize)
2253 {
1505 coro_stacksize = new_stacksize; 2254 cctx_stacksize = new_stacksize;
2255 ++cctx_gen;
2256 }
1506 OUTPUT: 2257 OUTPUT:
1507 RETVAL 2258 RETVAL
1508 2259
1509int 2260int
2261cctx_max_idle (int max_idle = 0)
2262 PROTOTYPE: ;$
2263 CODE:
2264 RETVAL = cctx_max_idle;
2265 if (max_idle > 1)
2266 cctx_max_idle = max_idle;
2267 OUTPUT:
2268 RETVAL
2269
2270int
1510cctx_count () 2271cctx_count ()
2272 PROTOTYPE:
1511 CODE: 2273 CODE:
1512 RETVAL = cctx_count; 2274 RETVAL = cctx_count;
1513 OUTPUT: 2275 OUTPUT:
1514 RETVAL 2276 RETVAL
1515 2277
1516int 2278int
1517cctx_idle () 2279cctx_idle ()
2280 PROTOTYPE:
1518 CODE: 2281 CODE:
1519 RETVAL = cctx_idle; 2282 RETVAL = cctx_idle;
1520 OUTPUT: 2283 OUTPUT:
1521 RETVAL 2284 RETVAL
1522 2285
1523void 2286void
1524list () 2287list ()
2288 PROTOTYPE:
1525 PPCODE: 2289 PPCODE:
1526{ 2290{
1527 struct coro *coro; 2291 struct coro *coro;
1528 for (coro = coro_first; coro; coro = coro->next) 2292 for (coro = coro_first; coro; coro = coro->next)
1529 if (coro->hv) 2293 if (coro->hv)
… …
1534call (Coro::State coro, SV *coderef) 2298call (Coro::State coro, SV *coderef)
1535 ALIAS: 2299 ALIAS:
1536 eval = 1 2300 eval = 1
1537 CODE: 2301 CODE:
1538{ 2302{
1539 if (coro->mainstack) 2303 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1540 { 2304 {
1541 struct coro temp; 2305 struct coro temp;
1542 Zero (&temp, 1, struct coro);
1543 2306
1544 if (!(coro->flags & CF_RUNNING)) 2307 if (!(coro->flags & CF_RUNNING))
1545 { 2308 {
2309 PUTBACK;
1546 save_perl (aTHX_ &temp); 2310 save_perl (aTHX_ &temp);
1547 load_perl (aTHX_ coro); 2311 load_perl (aTHX_ coro);
1548 } 2312 }
1549 2313
1550 { 2314 {
1551 dSP; 2315 dSP;
1552 ENTER; 2316 ENTER;
1553 SAVETMPS; 2317 SAVETMPS;
2318 PUTBACK;
2319 PUSHSTACK;
1554 PUSHMARK (SP); 2320 PUSHMARK (SP);
1555 PUTBACK; 2321
1556 if (ix) 2322 if (ix)
1557 eval_sv (coderef, 0); 2323 eval_sv (coderef, 0);
1558 else 2324 else
1559 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2325 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2326
2327 POPSTACK;
1560 SPAGAIN; 2328 SPAGAIN;
1561 FREETMPS; 2329 FREETMPS;
1562 LEAVE; 2330 LEAVE;
1563 PUTBACK; 2331 PUTBACK;
1564 } 2332 }
1565 2333
1566 if (!(coro->flags & CF_RUNNING)) 2334 if (!(coro->flags & CF_RUNNING))
1567 { 2335 {
1568 save_perl (aTHX_ coro); 2336 save_perl (aTHX_ coro);
1569 load_perl (aTHX_ &temp); 2337 load_perl (aTHX_ &temp);
2338 SPAGAIN;
1570 } 2339 }
1571 } 2340 }
1572} 2341}
1573 2342
1574SV * 2343SV *
… …
1583 RETVAL = boolSV (coro->flags & ix); 2352 RETVAL = boolSV (coro->flags & ix);
1584 OUTPUT: 2353 OUTPUT:
1585 RETVAL 2354 RETVAL
1586 2355
1587void 2356void
2357throw (Coro::State self, SV *throw = &PL_sv_undef)
2358 PROTOTYPE: $;$
2359 CODE:
2360 SvREFCNT_dec (self->throw);
2361 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2362
2363void
1588api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2364api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2365 PROTOTYPE: $;$
2366 C_ARGS: aTHX_ coro, flags
1589 2367
1590SV * 2368SV *
1591has_stack (Coro::State coro) 2369has_cctx (Coro::State coro)
1592 PROTOTYPE: $ 2370 PROTOTYPE: $
1593 CODE: 2371 CODE:
1594 RETVAL = boolSV (!!coro->cctx); 2372 RETVAL = boolSV (!!coro->cctx);
1595 OUTPUT: 2373 OUTPUT:
1596 RETVAL 2374 RETVAL
… …
1601 CODE: 2379 CODE:
1602 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2380 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1603 OUTPUT: 2381 OUTPUT:
1604 RETVAL 2382 RETVAL
1605 2383
1606IV 2384UV
1607rss (Coro::State coro) 2385rss (Coro::State coro)
1608 PROTOTYPE: $ 2386 PROTOTYPE: $
1609 ALIAS: 2387 ALIAS:
1610 usecount = 1 2388 usecount = 1
1611 CODE: 2389 CODE:
… …
1615 case 1: RETVAL = coro->usecount; break; 2393 case 1: RETVAL = coro->usecount; break;
1616 } 2394 }
1617 OUTPUT: 2395 OUTPUT:
1618 RETVAL 2396 RETVAL
1619 2397
2398void
2399force_cctx ()
2400 PROTOTYPE:
2401 CODE:
2402 SvSTATE_current->cctx->idle_sp = 0;
2403
2404void
2405swap_defsv (Coro::State self)
2406 PROTOTYPE: $
2407 ALIAS:
2408 swap_defav = 1
2409 CODE:
2410 if (!self->slot)
2411 croak ("cannot swap state with coroutine that has no saved state,");
2412 else
2413 {
2414 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2416
2417 SV *tmp = *src; *src = *dst; *dst = tmp;
2418 }
1620 2419
1621MODULE = Coro::State PACKAGE = Coro 2420MODULE = Coro::State PACKAGE = Coro
1622 2421
1623BOOT: 2422BOOT:
1624{ 2423{
1625 int i; 2424 int i;
1626 2425
1627 sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1628 sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1629 av_async_pool = get_av ("Coro::async_pool", TRUE); 2426 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2427 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2428 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1630 2429
1631 coro_current = get_sv ("Coro::current", FALSE); 2430 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1632 SvREADONLY_on (coro_current); 2431 SvREADONLY_on (coro_current);
1633 2432
1634 coro_stash = gv_stashpv ("Coro", TRUE); 2433 coro_stash = gv_stashpv ("Coro", TRUE);
1635 2434
1636 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2435 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1637 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2436 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1638 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2437 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1639 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2438 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
… …
1642 2441
1643 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2442 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1644 coro_ready[i] = newAV (); 2443 coro_ready[i] = newAV ();
1645 2444
1646 { 2445 {
1647 SV *sv = perl_get_sv("Coro::API", 1); 2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1648 2447
1649 coroapi.schedule = api_schedule; 2448 coroapi.schedule = api_schedule;
1650 coroapi.cede = api_cede; 2449 coroapi.cede = api_cede;
1651 coroapi.cede_notself = api_cede_notself; 2450 coroapi.cede_notself = api_cede_notself;
1652 coroapi.ready = api_ready; 2451 coroapi.ready = api_ready;
1653 coroapi.is_ready = api_is_ready; 2452 coroapi.is_ready = api_is_ready;
1654 coroapi.nready = &coro_nready; 2453 coroapi.nready = coro_nready;
1655 coroapi.current = coro_current; 2454 coroapi.current = coro_current;
1656 2455
1657 GCoroAPI = &coroapi; 2456 GCoroAPI = &coroapi;
1658 sv_setiv (sv, (IV)&coroapi); 2457 sv_setiv (sv, (IV)&coroapi);
1659 SvREADONLY_on (sv); 2458 SvREADONLY_on (sv);
1660 } 2459 }
1661} 2460}
2461
2462void
2463schedule (...)
2464 CODE:
2465 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2466
2467void
2468cede (...)
2469 CODE:
2470 CORO_EXECUTE_SLF_XS (slf_init_cede);
2471
2472void
2473cede_notself (...)
2474 CODE:
2475 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1662 2476
1663void 2477void
1664_set_current (SV *current) 2478_set_current (SV *current)
1665 PROTOTYPE: $ 2479 PROTOTYPE: $
1666 CODE: 2480 CODE:
1667 SvREFCNT_dec (SvRV (coro_current)); 2481 SvREFCNT_dec (SvRV (coro_current));
1668 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2482 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2483
2484void
2485_set_readyhook (SV *hook)
2486 PROTOTYPE: $
2487 CODE:
2488 SvREFCNT_dec (coro_readyhook);
2489 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1669 2490
1670int 2491int
1671prio (Coro::State coro, int newprio = 0) 2492prio (Coro::State coro, int newprio = 0)
2493 PROTOTYPE: $;$
1672 ALIAS: 2494 ALIAS:
1673 nice = 1 2495 nice = 1
1674 CODE: 2496 CODE:
1675{ 2497{
1676 RETVAL = coro->prio; 2498 RETVAL = coro->prio;
… …
1691 2513
1692SV * 2514SV *
1693ready (SV *self) 2515ready (SV *self)
1694 PROTOTYPE: $ 2516 PROTOTYPE: $
1695 CODE: 2517 CODE:
1696 RETVAL = boolSV (api_ready (self)); 2518 RETVAL = boolSV (api_ready (aTHX_ self));
1697 OUTPUT: 2519 OUTPUT:
1698 RETVAL 2520 RETVAL
1699 2521
1700int 2522int
1701nready (...) 2523nready (...)
… …
1708# for async_pool speedup 2530# for async_pool speedup
1709void 2531void
1710_pool_1 (SV *cb) 2532_pool_1 (SV *cb)
1711 CODE: 2533 CODE:
1712{ 2534{
1713 struct coro *coro = SvSTATE (coro_current);
1714 HV *hv = (HV *)SvRV (coro_current); 2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv ((SV *)hv);
1715 AV *defav = GvAV (PL_defgv); 2537 AV *defav = GvAV (PL_defgv);
1716 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1717 AV *invoke_av; 2539 AV *invoke_av;
1718 int i, len; 2540 int i, len;
1719 2541
1720 if (!invoke) 2542 if (!invoke)
2543 {
2544 SV *old = PL_diehook;
2545 PL_diehook = 0;
2546 SvREFCNT_dec (old);
1721 croak ("\3terminate\2\n"); 2547 croak ("\3async_pool terminate\2\n");
2548 }
1722 2549
1723 SvREFCNT_dec (coro->saved_deffh); 2550 SvREFCNT_dec (coro->saved_deffh);
1724 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2551 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1725 2552
1726 hv_store (hv, "desc", sizeof ("desc") - 1, 2553 hv_store (hv, "desc", sizeof ("desc") - 1,
1727 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); 2554 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1728 2555
1729 invoke_av = (AV *)SvRV (invoke); 2556 invoke_av = (AV *)SvRV (invoke);
… …
1733 2560
1734 if (len > 0) 2561 if (len > 0)
1735 { 2562 {
1736 av_fill (defav, len - 1); 2563 av_fill (defav, len - 1);
1737 for (i = 0; i < len; ++i) 2564 for (i = 0; i < len; ++i)
1738 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2565 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1739 } 2566 }
1740
1741 SvREFCNT_dec (invoke);
1742} 2567}
1743 2568
1744void 2569void
1745_pool_2 (SV *cb) 2570_pool_2 (SV *cb)
1746 CODE: 2571 CODE:
1747{ 2572{
1748 struct coro *coro = SvSTATE (coro_current); 2573 struct coro *coro = SvSTATE_current;
1749 2574
1750 sv_setsv (cb, &PL_sv_undef); 2575 sv_setsv (cb, &PL_sv_undef);
1751 2576
1752 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2577 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1753 coro->saved_deffh = 0; 2578 coro->saved_deffh = 0;
1754 2579
1755 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2580 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1756 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2581 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2582 {
2583 SV *old = PL_diehook;
2584 PL_diehook = 0;
2585 SvREFCNT_dec (old);
1757 croak ("\3terminate\2\n"); 2586 croak ("\3async_pool terminate\2\n");
2587 }
1758 2588
1759 av_clear (GvAV (PL_defgv)); 2589 av_clear (GvAV (PL_defgv));
1760 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 2590 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1761 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 2591 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1762 2592
1763 coro->prio = 0; 2593 coro->prio = 0;
1764 2594
1765 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2595 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1766 api_trace (coro_current, 0); 2596 api_trace (aTHX_ coro_current, 0);
1767 2597
1768 av_push (av_async_pool, newSVsv (coro_current)); 2598 av_push (av_async_pool, newSVsv (coro_current));
1769} 2599}
1770 2600
1771 2601
1772MODULE = Coro::State PACKAGE = Coro::AIO 2602MODULE = Coro::State PACKAGE = Coro::AIO
1773 2603
1774SV * 2604void
1775_get_state () 2605_get_state (SV *self)
2606 PROTOTYPE: $
1776 CODE: 2607 PPCODE:
1777{ 2608{
1778 struct io_state *data; 2609 AV *defav = GvAV (PL_defgv);
1779 2610 AV *av = newAV ();
2611 int i;
1780 RETVAL = newSV (sizeof (struct io_state)); 2612 SV *data_sv = newSV (sizeof (struct io_state));
1781 data = (struct io_state *)SvPVX (RETVAL); 2613 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1782 SvCUR_set (RETVAL, sizeof (struct io_state)); 2614 SvCUR_set (data_sv, sizeof (struct io_state));
1783 SvPOK_only (RETVAL); 2615 SvPOK_only (data_sv);
1784 2616
1785 data->errorno = errno; 2617 data->errorno = errno;
1786 data->laststype = PL_laststype; 2618 data->laststype = PL_laststype;
1787 data->laststatval = PL_laststatval; 2619 data->laststatval = PL_laststatval;
1788 data->statcache = PL_statcache; 2620 data->statcache = PL_statcache;
2621
2622 av_extend (av, AvFILLp (defav) + 1 + 1);
2623
2624 for (i = 0; i <= AvFILLp (defav); ++i)
2625 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2626
2627 av_push (av, data_sv);
2628
2629 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2630
2631 api_ready (aTHX_ self);
1789} 2632}
1790 OUTPUT:
1791 RETVAL
1792 2633
1793void 2634void
1794_set_state (char *data_) 2635_set_state (SV *state)
1795 PROTOTYPE: $ 2636 PROTOTYPE: $
1796 CODE: 2637 PPCODE:
1797{ 2638{
1798 struct io_state *data = (void *)data_; 2639 AV *av = (AV *)SvRV (state);
2640 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2641 int i;
1799 2642
1800 errno = data->errorno; 2643 errno = data->errorno;
1801 PL_laststype = data->laststype; 2644 PL_laststype = data->laststype;
1802 PL_laststatval = data->laststatval; 2645 PL_laststatval = data->laststatval;
1803 PL_statcache = data->statcache; 2646 PL_statcache = data->statcache;
1804}
1805 2647
2648 EXTEND (SP, AvFILLp (av));
2649 for (i = 0; i < AvFILLp (av); ++i)
2650 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2651}
2652
2653
2654MODULE = Coro::State PACKAGE = Coro::AnyEvent
2655
2656BOOT:
2657 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2658
2659void
2660_schedule (...)
2661 CODE:
2662{
2663 static int incede;
2664
2665 api_cede_notself (aTHX);
2666
2667 ++incede;
2668 while (coro_nready >= incede && api_cede (aTHX))
2669 ;
2670
2671 sv_setsv (sv_activity, &PL_sv_undef);
2672 if (coro_nready >= incede)
2673 {
2674 PUSHMARK (SP);
2675 PUTBACK;
2676 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2677 SPAGAIN;
2678 }
2679
2680 --incede;
2681}
2682
2683
2684MODULE = Coro::State PACKAGE = PerlIO::cede
2685
2686BOOT:
2687 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2688
2689MODULE = Coro::State PACKAGE = Coro::Semaphore
2690
2691SV *
2692new (SV *klass, SV *count_ = 0)
2693 CODE:
2694{
2695 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2696 AV *av = newAV ();
2697 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2698 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2699}
2700 OUTPUT:
2701 RETVAL
2702
2703SV *
2704count (SV *self)
2705 CODE:
2706 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2707 OUTPUT:
2708 RETVAL
2709
2710void
2711up (SV *self, int adjust = 1)
2712 ALIAS:
2713 adjust = 1
2714 CODE:
2715 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2716
2717void
2718down (SV *self)
2719 CODE:
2720 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2721
2722void
2723try (SV *self)
2724 PPCODE:
2725{
2726 AV *av = (AV *)SvRV (self);
2727 SV *count_sv = AvARRAY (av)[0];
2728 IV count = SvIVX (count_sv);
2729
2730 if (count > 0)
2731 {
2732 --count;
2733 SvIVX (count_sv) = count;
2734 XSRETURN_YES;
2735 }
2736 else
2737 XSRETURN_NO;
2738}
2739
2740void
2741waiters (SV *self)
2742 CODE:
2743{
2744 AV *av = (AV *)SvRV (self);
2745
2746 if (GIMME_V == G_SCALAR)
2747 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2748 else
2749 {
2750 int i;
2751 EXTEND (SP, AvFILLp (av) + 1 - 1);
2752 for (i = 1; i <= AvFILLp (av); ++i)
2753 PUSHs (newSVsv (AvARRAY (av)[i]));
2754 }
2755}
2756

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