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Comparing Coro/Coro/State.xs (file contents):
Revision 1.210 by root, Wed Oct 10 03:24:40 2007 UTC vs.
Revision 1.282 by root, Sun Nov 16 10:33:08 2008 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "patchlevel.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
15#include <inttypes.h> /* portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif
16 25
17#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
18# include <unistd.h> 27# include <unistd.h>
19# include <sys/mman.h> 28# include <sys/mman.h>
20# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
37# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
38#endif 47#endif
39 48
40#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
41# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
42# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43#else
44# define REGISTER_STACK(cctx,start,end)
45#endif 51#endif
46 52
47/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
48#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
49 55
50#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
51 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
52 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
53 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
72# ifndef IS_PADCONST 78# ifndef IS_PADCONST
73# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
74# endif 80# endif
75#endif 81#endif
76 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
77/* 5.8.7 */ 101/* 5.8.7 */
78#ifndef SvRV_set 102#ifndef SvRV_set
79# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
80#endif 104#endif
81 105
82/* 5.8.8 */
83#ifndef GV_NOTQUAL
84# define GV_NOTQUAL 0
85#endif
86#ifndef newSV
87# define newSV(l) NEWSV(0,l)
88#endif
89
90#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
91# undef CORO_STACKGUARD 107# undef CORO_STACKGUARD
92#endif 108#endif
93 109
94#ifndef CORO_STACKGUARD 110#ifndef CORO_STACKGUARD
… …
100# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
101#endif 117#endif
102 118
103/* The next macros try to return the current stack pointer, in an as 119/* The next macros try to return the current stack pointer, in an as
104 * portable way as possible. */ 120 * portable way as possible. */
105#define dSTACKLEVEL volatile char stacklevel 121#if __GNUC__ >= 4
106#define STACKLEVEL ((void *)&stacklevel) 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
107 126
108#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
109 128
110#if __GNUC__ >= 3 129#if __GNUC__ >= 3
111# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
112# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113# define expect(expr,value) __builtin_expect ((expr),(value)) 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
114#else 133#else
115# define attribute(x) 134# define attribute(x)
116# define BARRIER
117# define expect(expr,value) (expr) 135# define expect(expr,value) (expr)
136# define INLINE static
118#endif 137#endif
119 138
120#define expect_false(expr) expect ((expr) != 0, 0) 139#define expect_false(expr) expect ((expr) != 0, 0)
121#define expect_true(expr) expect ((expr) != 0, 1) 140#define expect_true(expr) expect ((expr) != 0, 1)
122 141
123#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
124 143
125#include "CoroAPI.h" 144#include "CoroAPI.h"
126 145
127#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
128static perl_mutex coro_mutex; 147# if CORO_PTHREAD
129# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148static void *coro_thx;
130# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
131#else
132# define LOCK (void)0
133# define UNLOCK (void)0
134#endif 149# endif
135 150#endif
136#define strpair(const) const, sizeof (const) - 1
137 151
138/* helper storage struct for Coro::AIO */ 152/* helper storage struct for Coro::AIO */
139struct io_state 153struct io_state
140{ 154{
155 AV *res;
141 int errorno; 156 int errorno;
142 I32 laststype; 157 I32 laststype; /* U16 in 5.10.0 */
143 int laststatval; 158 int laststatval;
144 Stat_t statcache; 159 Stat_t statcache;
145}; 160};
146 161
162static double (*nvtime)(); /* so why doesn't it take void? */
163
164static U32 cctx_gen;
147static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
148static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
149static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
150static JMPENV *main_top_env; 168static JMPENV *main_top_env;
151static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
152static SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next;
153 172
154static GV *irsgv; /* $/ */ 173static GV *irsgv; /* $/ */
155static GV *stdoutgv; /* *STDOUT */ 174static GV *stdoutgv; /* *STDOUT */
156 175static SV *rv_diehook;
176static SV *rv_warnhook;
157static HV *hv_sig; /* %SIG */ 177static HV *hv_sig; /* %SIG */
158static SV *sv_diehook;
159static SV *sv_warnhook;
160 178
161/* async_pool helper stuff */ 179/* async_pool helper stuff */
162static SV *sv_pool_rss; 180static SV *sv_pool_rss;
163static SV *sv_pool_size; 181static SV *sv_pool_size;
164static AV *av_async_pool; 182static AV *av_async_pool;
165 183
166static struct coro_cctx *cctx_first[3]; /* index by GIMME_V type, void, scalar, array */ 184/* Coro::AnyEvent */
185static SV *sv_activity;
186
187static struct coro_cctx *cctx_first;
167static int cctx_count, cctx_idle[3]; 188static int cctx_count, cctx_idle;
168 189
169enum { 190enum {
170 CC_MAPPED = 0x01, 191 CC_MAPPED = 0x01,
171 CC_NOREUSE = 0x02, /* throw this away after tracing */ 192 CC_NOREUSE = 0x02, /* throw this away after tracing */
172 CC_TRACE = 0x04, 193 CC_TRACE = 0x04,
… …
174 CC_TRACE_LINE = 0x10, /* trace each statement */ 195 CC_TRACE_LINE = 0x10, /* trace each statement */
175 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 196 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
176}; 197};
177 198
178/* this is a structure representing a c-level coroutine */ 199/* this is a structure representing a c-level coroutine */
179typedef struct coro_cctx { 200typedef struct coro_cctx
201{
180 struct coro_cctx *next; 202 struct coro_cctx *next;
181 203
182 /* the stack */ 204 /* the stack */
183 void *sptr; 205 void *sptr;
184 size_t ssize; 206 size_t ssize;
… …
187 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
188 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
189 JMPENV *top_env; 211 JMPENV *top_env;
190 coro_context cctx; 212 coro_context cctx;
191 213
214 U32 gen;
192#if CORO_USE_VALGRIND 215#if CORO_USE_VALGRIND
193 int valgrind_id; 216 int valgrind_id;
194#endif 217#endif
195 unsigned char flags; 218 unsigned char flags;
196} coro_cctx; 219} coro_cctx;
… …
201 CF_NEW = 0x0004, /* has never been switched to */ 224 CF_NEW = 0x0004, /* has never been switched to */
202 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
203}; 226};
204 227
205/* the structure where most of the perl state is stored, overlaid on the cxstack */ 228/* the structure where most of the perl state is stored, overlaid on the cxstack */
206typedef struct { 229typedef struct
230{
207 SV *defsv; 231 SV *defsv;
208 AV *defav; 232 AV *defav;
209 SV *errsv; 233 SV *errsv;
210 SV *irsgv; 234 SV *irsgv;
211#define VAR(name,type) type name; 235#define VAR(name,type) type name;
… …
215 239
216#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
217 241
218/* this is a structure representing a perl-level coroutine */ 242/* this is a structure representing a perl-level coroutine */
219struct coro { 243struct coro {
220 /* the c coroutine allocated to this perl coroutine, if any */ 244 /* the C coroutine allocated to this perl coroutine, if any */
221 coro_cctx *cctx; 245 coro_cctx *cctx;
222 int gimme;
223 246
224 /* process data */ 247 /* process data */
248 struct CoroSLF slf_frame; /* saved slf frame */
225 AV *mainstack; 249 AV *mainstack;
226 perl_slots *slot; /* basically the saved sp */ 250 perl_slots *slot; /* basically the saved sp */
227 251
228 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
229 int refcnt; /* coroutines are refcounted, yes */ 253 int refcnt; /* coroutines are refcounted, yes */
230 int flags; /* CF_ flags */ 254 int flags; /* CF_ flags */
231 HV *hv; /* the perl hash associated with this coro, if any */ 255 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
232 257
233 /* statistics */ 258 /* statistics */
234 int usecount; /* number of transfers to this coro */ 259 int usecount; /* number of transfers to this coro */
235 260
236 /* coro process data */ 261 /* coro process data */
… …
244 struct coro *next, *prev; 269 struct coro *next, *prev;
245}; 270};
246 271
247typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
248typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
274
275static struct CoroSLF slf_frame; /* the current slf frame */
249 276
250/** Coro ********************************************************************/ 277/** Coro ********************************************************************/
251 278
252#define PRIO_MAX 3 279#define PRIO_MAX 3
253#define PRIO_HIGH 1 280#define PRIO_HIGH 1
… …
256#define PRIO_IDLE -3 283#define PRIO_IDLE -3
257#define PRIO_MIN -4 284#define PRIO_MIN -4
258 285
259/* for Coro.pm */ 286/* for Coro.pm */
260static SV *coro_current; 287static SV *coro_current;
288static SV *coro_readyhook;
261static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
262static int coro_nready;
263static struct coro *coro_first; 290static struct coro *coro_first;
291#define coro_nready coroapi.nready
264 292
265/** lowlevel stuff **********************************************************/ 293/** lowlevel stuff **********************************************************/
266 294
267static SV * 295static SV *
268coro_get_sv (const char *name, int create) 296coro_get_sv (pTHX_ const char *name, int create)
269{ 297{
270#if PERL_VERSION_ATLEAST (5,9,0) 298#if PERL_VERSION_ATLEAST (5,10,0)
271 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 299 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
272 get_sv (name, create); 300 get_sv (name, create);
273#endif 301#endif
274 return get_sv (name, create); 302 return get_sv (name, create);
275} 303}
276 304
277static AV * 305static AV *
278coro_get_av (const char *name, int create) 306coro_get_av (pTHX_ const char *name, int create)
279{ 307{
280#if PERL_VERSION_ATLEAST (5,9,0) 308#if PERL_VERSION_ATLEAST (5,10,0)
281 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 309 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
282 get_av (name, create); 310 get_av (name, create);
283#endif 311#endif
284 return get_av (name, create); 312 return get_av (name, create);
285} 313}
286 314
287static HV * 315static HV *
288coro_get_hv (const char *name, int create) 316coro_get_hv (pTHX_ const char *name, int create)
289{ 317{
290#if PERL_VERSION_ATLEAST (5,9,0) 318#if PERL_VERSION_ATLEAST (5,10,0)
291 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
292 get_hv (name, create); 320 get_hv (name, create);
293#endif 321#endif
294 return get_hv (name, create); 322 return get_hv (name, create);
295} 323}
… …
300 AV *padlist = CvPADLIST (cv); 328 AV *padlist = CvPADLIST (cv);
301 AV *newpadlist, *newpad; 329 AV *newpadlist, *newpad;
302 330
303 newpadlist = newAV (); 331 newpadlist = newAV ();
304 AvREAL_off (newpadlist); 332 AvREAL_off (newpadlist);
305#if PERL_VERSION_ATLEAST (5,9,0) 333#if PERL_VERSION_ATLEAST (5,10,0)
306 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 334 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
307#else 335#else
308 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
309#endif 337#endif
310 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
311 --AvFILLp (padlist); 339 --AvFILLp (padlist);
312 340
313 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
314 av_store (newpadlist, 1, (SV *)newpad); 342 av_store (newpadlist, 1, (SV *)newpad);
315 343
316 return newpadlist; 344 return newpadlist;
317} 345}
318 346
… …
348 376
349 /* casting is fun. */ 377 /* casting is fun. */
350 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
351 free_padlist (aTHX_ padlist); 379 free_padlist (aTHX_ padlist);
352 380
353 SvREFCNT_dec (av); 381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
354 382
355 return 0; 383 return 0;
356} 384}
357 385
358#define PERL_MAGIC_coro PERL_MAGIC_ext 386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
359 388
360static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 389static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0,
391 coro_cv_free
392};
361 393
362#define CORO_MAGIC(cv) \ 394#define CORO_MAGIC(sv, type) \
363 SvMAGIC (cv) \ 395 expect_true (SvMAGIC (sv)) \
364 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 396 ? expect_true (SvMAGIC (sv)->mg_type == type) \
365 ? SvMAGIC (cv) \ 397 ? SvMAGIC (sv) \
366 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 398 : mg_find (sv, type) \
367 : 0 399 : 0
368 400
369static struct coro * 401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
370SvSTATE_ (pTHX_ SV *coro) 405SvSTATE_ (pTHX_ SV *coro)
371{ 406{
372 HV *stash; 407 HV *stash;
373 MAGIC *mg; 408 MAGIC *mg;
374 409
… …
384 /* very slow, but rare, check */ 419 /* very slow, but rare, check */
385 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) 420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
386 croak ("Coro::State object required"); 421 croak ("Coro::State object required");
387 } 422 }
388 423
389 mg = CORO_MAGIC (coro); 424 mg = CORO_MAGIC_state (coro);
390 return (struct coro *)mg->mg_ptr; 425 return (struct coro *)mg->mg_ptr;
391} 426}
392 427
393#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
394 429
430/* fastert than SvSTATE, but expects a coroutine hv */
431INLINE struct coro *
432SvSTATE_hv (SV *sv)
433{
434 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435 ? SvMAGIC (sv)
436 : mg_find (sv, CORO_MAGIC_type_state);
437
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442
395/* the next two functions merely cache the padlists */ 443/* the next two functions merely cache the padlists */
396static void 444static void
397get_padlist (pTHX_ CV *cv) 445get_padlist (pTHX_ CV *cv)
398{ 446{
399 MAGIC *mg = CORO_MAGIC (cv); 447 MAGIC *mg = CORO_MAGIC_cv (cv);
400 AV *av; 448 AV *av;
401 449
402 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 450 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
403 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 451 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
404 else 452 else
405 { 453 {
406#if CORO_PREFER_PERL_FUNCTIONS 454#if CORO_PREFER_PERL_FUNCTIONS
407 /* this is probably cleaner, but also slower? */ 455 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */
408 CV *cp = Perl_cv_clone (cv); 457 CV *cp = Perl_cv_clone (cv);
409 CvPADLIST (cv) = CvPADLIST (cp); 458 CvPADLIST (cv) = CvPADLIST (cp);
410 CvPADLIST (cp) = 0; 459 CvPADLIST (cp) = 0;
411 SvREFCNT_dec (cp); 460 SvREFCNT_dec (cp);
412#else 461#else
… …
416} 465}
417 466
418static void 467static void
419put_padlist (pTHX_ CV *cv) 468put_padlist (pTHX_ CV *cv)
420{ 469{
421 MAGIC *mg = CORO_MAGIC (cv); 470 MAGIC *mg = CORO_MAGIC_cv (cv);
422 AV *av; 471 AV *av;
423 472
424 if (expect_false (!mg)) 473 if (expect_false (!mg))
425 { 474 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
426 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
427 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
428 mg->mg_virtual = &vtbl_coro;
429 mg->mg_obj = (SV *)newAV ();
430 }
431 475
432 av = (AV *)mg->mg_obj; 476 av = (AV *)mg->mg_obj;
433 477
434 if (expect_false (AvFILLp (av) >= AvMAX (av))) 478 if (expect_false (AvFILLp (av) >= AvMAX (av)))
435 av_extend (av, AvMAX (av) + 1); 479 av_extend (av, AvMAX (av) + 1);
… …
453 GvSV (irsgv) = slot->irsgv; 497 GvSV (irsgv) = slot->irsgv;
454 498
455 #define VAR(name,type) PL_ ## name = slot->name; 499 #define VAR(name,type) PL_ ## name = slot->name;
456 # include "state.h" 500 # include "state.h"
457 #undef VAR 501 #undef VAR
458
459 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
460 /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
461 502
462 { 503 {
463 dSP; 504 dSP;
464 505
465 CV *cv; 506 CV *cv;
… …
472 CvPADLIST (cv) = (AV *)POPs; 513 CvPADLIST (cv) = (AV *)POPs;
473 } 514 }
474 515
475 PUTBACK; 516 PUTBACK;
476 } 517 }
518
519 slf_frame = c->slf_frame;
477} 520}
478 521
479static void 522static void
480save_perl (pTHX_ Coro__State c) 523save_perl (pTHX_ Coro__State c)
481{ 524{
525 c->slf_frame = slf_frame;
526
482 { 527 {
483 dSP; 528 dSP;
484 I32 cxix = cxstack_ix; 529 I32 cxix = cxstack_ix;
485 PERL_CONTEXT *ccstk = cxstack; 530 PERL_CONTEXT *ccstk = cxstack;
486 PERL_SI *top_si = PL_curstackinfo; 531 PERL_SI *top_si = PL_curstackinfo;
… …
504 549
505 if (expect_true (CvDEPTH (cv))) 550 if (expect_true (CvDEPTH (cv)))
506 { 551 {
507 EXTEND (SP, 3); 552 EXTEND (SP, 3);
508 PUSHs ((SV *)CvPADLIST (cv)); 553 PUSHs ((SV *)CvPADLIST (cv));
509 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 554 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
510 PUSHs ((SV *)cv); 555 PUSHs ((SV *)cv);
511 556
512 CvDEPTH (cv) = 0; 557 CvDEPTH (cv) = 0;
513 get_padlist (aTHX_ cv); 558 get_padlist (aTHX_ cv);
514 } 559 }
… …
553 #undef VAR 598 #undef VAR
554 } 599 }
555} 600}
556 601
557/* 602/*
558 * allocate various perl stacks. This is an exact copy 603 * allocate various perl stacks. This is almost an exact copy
559 * of perl.c:init_stacks, except that it uses less memory 604 * of perl.c:init_stacks, except that it uses less memory
560 * on the (sometimes correct) assumption that coroutines do 605 * on the (sometimes correct) assumption that coroutines do
561 * not usually need a lot of stackspace. 606 * not usually need a lot of stackspace.
562 */ 607 */
563#if CORO_PREFER_PERL_FUNCTIONS 608#if CORO_PREFER_PERL_FUNCTIONS
… …
594 639
595 New(54,PL_savestack,24,ANY); 640 New(54,PL_savestack,24,ANY);
596 PL_savestack_ix = 0; 641 PL_savestack_ix = 0;
597 PL_savestack_max = 24; 642 PL_savestack_max = 24;
598 643
599#if !PERL_VERSION_ATLEAST (5,9,0) 644#if !PERL_VERSION_ATLEAST (5,10,0)
600 New(54,PL_retstack,4,OP*); 645 New(54,PL_retstack,4,OP*);
601 PL_retstack_ix = 0; 646 PL_retstack_ix = 0;
602 PL_retstack_max = 4; 647 PL_retstack_max = 4;
603#endif 648#endif
604} 649}
… …
606 651
607/* 652/*
608 * destroy the stacks, the callchain etc... 653 * destroy the stacks, the callchain etc...
609 */ 654 */
610static void 655static void
611coro_destroy_stacks (pTHX) 656coro_destruct_stacks (pTHX)
612{ 657{
613 while (PL_curstackinfo->si_next) 658 while (PL_curstackinfo->si_next)
614 PL_curstackinfo = PL_curstackinfo->si_next; 659 PL_curstackinfo = PL_curstackinfo->si_next;
615 660
616 while (PL_curstackinfo) 661 while (PL_curstackinfo)
… …
627 672
628 Safefree (PL_tmps_stack); 673 Safefree (PL_tmps_stack);
629 Safefree (PL_markstack); 674 Safefree (PL_markstack);
630 Safefree (PL_scopestack); 675 Safefree (PL_scopestack);
631 Safefree (PL_savestack); 676 Safefree (PL_savestack);
632#if !PERL_VERSION_ATLEAST (5,9,0) 677#if !PERL_VERSION_ATLEAST (5,10,0)
633 Safefree (PL_retstack); 678 Safefree (PL_retstack);
634#endif 679#endif
635} 680}
636 681
637static size_t 682static size_t
… …
653 #undef VAR 698 #undef VAR
654 } 699 }
655 else 700 else
656 slot = coro->slot; 701 slot = coro->slot;
657 702
703 if (slot)
704 {
658 rss += sizeof (slot->curstackinfo); 705 rss += sizeof (slot->curstackinfo);
659 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
660 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
661 rss += slot->tmps_max * sizeof (SV *); 708 rss += slot->tmps_max * sizeof (SV *);
662 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); 709 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
663 rss += slot->scopestack_max * sizeof (I32); 710 rss += slot->scopestack_max * sizeof (I32);
664 rss += slot->savestack_max * sizeof (ANY); 711 rss += slot->savestack_max * sizeof (ANY);
665 712
666#if !PERL_VERSION_ATLEAST (5,9,0) 713#if !PERL_VERSION_ATLEAST (5,10,0)
667 rss += slot->retstack_max * sizeof (OP *); 714 rss += slot->retstack_max * sizeof (OP *);
668#endif 715#endif
716 }
669 } 717 }
670 718
671 return rss; 719 return rss;
672} 720}
673 721
674/** coroutine stack handling ************************************************/ 722/** coroutine stack handling ************************************************/
723
724static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
725static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
726static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
727
728/* apparently < 5.8.8 */
729#ifndef MgPV_nolen_const
730#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
731 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
732 (const char*)(mg)->mg_ptr)
733#endif
734
735/*
736 * This overrides the default magic get method of %SIG elements.
737 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
738 * and instead of tryign to save and restore the hash elements, we just provide
739 * readback here.
740 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
741 * not expecting this to actually change the hook. This is a potential problem
742 * when a schedule happens then, but we ignore this.
743 */
744static int
745coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
746{
747 const char *s = MgPV_nolen_const (mg);
748
749 if (*s == '_')
750 {
751 SV **svp = 0;
752
753 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
754 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
755
756 if (svp)
757 {
758 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
759 return 0;
760 }
761 }
762
763 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
764}
765
766static int
767coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
768{
769 const char *s = MgPV_nolen_const (mg);
770
771 if (*s == '_')
772 {
773 SV **svp = 0;
774
775 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
776 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
777
778 if (svp)
779 {
780 SV *old = *svp;
781 *svp = 0;
782 SvREFCNT_dec (old);
783 return 0;
784 }
785 }
786
787 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
788}
789
790static int
791coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
792{
793 const char *s = MgPV_nolen_const (mg);
794
795 if (*s == '_')
796 {
797 SV **svp = 0;
798
799 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
800 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
801
802 if (svp)
803 {
804 SV *old = *svp;
805 *svp = newSVsv (sv);
806 SvREFCNT_dec (old);
807 return 0;
808 }
809 }
810
811 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
812}
813
814static void
815prepare_nop (pTHX_ struct coro_transfer_args *ta)
816{
817 /* kind of mega-hacky, but works */
818 ta->next = ta->prev = (struct coro *)ta;
819}
820
821static int
822slf_check_nop (pTHX_ struct CoroSLF *frame)
823{
824 return 0;
825}
675 826
676static void 827static void
677coro_setup (pTHX_ struct coro *coro) 828coro_setup (pTHX_ struct coro *coro)
678{ 829{
679 /* 830 /*
… …
688 PL_curpm = 0; 839 PL_curpm = 0;
689 PL_curpad = 0; 840 PL_curpad = 0;
690 PL_localizing = 0; 841 PL_localizing = 0;
691 PL_dirty = 0; 842 PL_dirty = 0;
692 PL_restartop = 0; 843 PL_restartop = 0;
693 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); 844#if PERL_VERSION_ATLEAST (5,10,0)
694 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); 845 PL_parser = 0;
846#endif
847
848 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
695 851
696 GvSV (PL_defgv) = newSV (0); 852 GvSV (PL_defgv) = newSV (0);
697 GvAV (PL_defgv) = coro->args; coro->args = 0; 853 GvAV (PL_defgv) = coro->args; coro->args = 0;
698 GvSV (PL_errgv) = newSV (0); 854 GvSV (PL_errgv) = newSV (0);
699 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
700 PL_rs = newSVsv (GvSV (irsgv)); 856 PL_rs = newSVsv (GvSV (irsgv));
701 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
702 858
703 { 859 {
704 dSP; 860 dSP;
705 LOGOP myop; 861 UNOP myop;
706 862
707 Zero (&myop, 1, LOGOP); 863 Zero (&myop, 1, UNOP);
708 myop.op_next = Nullop; 864 myop.op_next = Nullop;
709 myop.op_flags = OPf_WANT_VOID; 865 myop.op_flags = OPf_WANT_VOID;
710 866
711 PUSHMARK (SP); 867 PUSHMARK (SP);
712 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
713 PUTBACK; 869 PUTBACK;
714 PL_op = (OP *)&myop; 870 PL_op = (OP *)&myop;
715 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
716 SPAGAIN; 872 SPAGAIN;
717
718 /*
719 * now its very tricky. the "tail" of the next transfer might end up
720 * either in a new cctx, or an existing one.
721 * in case of an existing one we have to take care of whatever
722 * entersub and transfer do to the perl stack.
723 */
724 ENTER;
725 EXTEND (SP, 4);
726 PUSHs ((SV *)0); /* items */
727 PUSHs ((SV *)0); /* ix, set_stacklevel */
728 PUSHs ((SV *)(sp - PL_stack_base + 1)); /* ax */
729 PUSHs ((SV *)0); /* again */
730 PUTBACK;
731 } 873 }
732 874
733 /* this newly created coroutine might be run on an existing cctx which most 875 /* this newly created coroutine might be run on an existing cctx which most
734 * likely was suspended in set_stacklevel, called from entersub. 876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
735 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
736 * so we ENTER here for symmetry
737 */ 877 */
738 ENTER; 878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
739} 880}
740 881
741static void 882static void
742coro_destroy (pTHX_ struct coro *coro) 883coro_destruct (pTHX_ struct coro *coro)
743{ 884{
744 if (!IN_DESTRUCT) 885 if (!IN_DESTRUCT)
745 { 886 {
746 /* restore all saved variables and stuff */ 887 /* restore all saved variables and stuff */
747 LEAVE_SCOPE (0); 888 LEAVE_SCOPE (0);
… …
769 SvREFCNT_dec (PL_warnhook); 910 SvREFCNT_dec (PL_warnhook);
770 911
771 SvREFCNT_dec (coro->saved_deffh); 912 SvREFCNT_dec (coro->saved_deffh);
772 SvREFCNT_dec (coro->throw); 913 SvREFCNT_dec (coro->throw);
773 914
774 coro_destroy_stacks (aTHX); 915 coro_destruct_stacks (aTHX);
775} 916}
776 917
777static void 918INLINE void
778free_coro_mortal (pTHX) 919free_coro_mortal (pTHX)
779{ 920{
780 if (expect_true (coro_mortal)) 921 if (expect_true (coro_mortal))
781 { 922 {
782 SvREFCNT_dec (coro_mortal); 923 SvREFCNT_dec (coro_mortal);
… …
787static int 928static int
788runops_trace (pTHX) 929runops_trace (pTHX)
789{ 930{
790 COP *oldcop = 0; 931 COP *oldcop = 0;
791 int oldcxix = -2; 932 int oldcxix = -2;
792 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
793 coro_cctx *cctx = coro->cctx; 934 coro_cctx *cctx = coro->cctx;
794 935
795 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
796 { 937 {
797 PERL_ASYNC_CHECK (); 938 PERL_ASYNC_CHECK ();
… …
816 : cx->blk_gimme == G_SCALAR ? bot + 1 957 : cx->blk_gimme == G_SCALAR ? bot + 1
817 : bot; 958 : bot;
818 959
819 av_extend (av, top - bot); 960 av_extend (av, top - bot);
820 while (bot < top) 961 while (bot < top)
821 av_push (av, SvREFCNT_inc (*bot++)); 962 av_push (av, SvREFCNT_inc_NN (*bot++));
822 963
823 PL_runops = RUNOPS_DEFAULT; 964 PL_runops = RUNOPS_DEFAULT;
824 ENTER; 965 ENTER;
825 SAVETMPS; 966 SAVETMPS;
826 EXTEND (SP, 3); 967 EXTEND (SP, 3);
827 PUSHMARK (SP); 968 PUSHMARK (SP);
828 PUSHs (&PL_sv_no); 969 PUSHs (&PL_sv_no);
829 PUSHs (fullname); 970 PUSHs (fullname);
830 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 971 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
831 PUTBACK; 972 PUTBACK;
832 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 973 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
833 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 974 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
834 SPAGAIN; 975 SPAGAIN;
835 FREETMPS; 976 FREETMPS;
836 LEAVE; 977 LEAVE;
837 PL_runops = runops_trace; 978 PL_runops = runops_trace;
… …
864 SAVETMPS; 1005 SAVETMPS;
865 EXTEND (SP, 3); 1006 EXTEND (SP, 3);
866 PUSHMARK (SP); 1007 PUSHMARK (SP);
867 PUSHs (&PL_sv_yes); 1008 PUSHs (&PL_sv_yes);
868 PUSHs (fullname); 1009 PUSHs (fullname);
869 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
870 PUTBACK; 1011 PUTBACK;
871 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
872 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1013 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
873 SPAGAIN; 1014 SPAGAIN;
874 FREETMPS; 1015 FREETMPS;
875 LEAVE; 1016 LEAVE;
876 PL_runops = runops_trace; 1017 PL_runops = runops_trace;
… …
890 PL_runops = RUNOPS_DEFAULT; 1031 PL_runops = RUNOPS_DEFAULT;
891 PUSHMARK (SP); 1032 PUSHMARK (SP);
892 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1033 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
893 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1034 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
894 PUTBACK; 1035 PUTBACK;
895 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); 1036 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
896 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1037 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
897 SPAGAIN; 1038 SPAGAIN;
898 FREETMPS; 1039 FREETMPS;
899 LEAVE; 1040 LEAVE;
900 PL_runops = runops_trace; 1041 PL_runops = runops_trace;
… …
906 1047
907 TAINT_NOT; 1048 TAINT_NOT;
908 return 0; 1049 return 0;
909} 1050}
910 1051
1052static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx)
1054{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0;
1057}
1058
911/* inject a fake call to Coro::State::_cctx_init into the execution */ 1059/* inject a fake call to Coro::State::_cctx_init into the execution */
912/* _cctx_init should be careful, as it could be called at almost any time */ 1060/* _cctx_init should be careful, as it could be called at almost any time */
913/* during execution of a perl program */ 1061/* during execution of a perl program */
1062/* also initialises PL_top_env */
914static void NOINLINE 1063static void NOINLINE
915cctx_prepare (pTHX_ coro_cctx *cctx) 1064cctx_prepare (pTHX_ coro_cctx *cctx)
916{ 1065{
917 dSP; 1066 dSP;
918 LOGOP myop; 1067 UNOP myop;
919 1068
920 PL_top_env = &PL_start_env; 1069 PL_top_env = &PL_start_env;
921 1070
922 if (cctx->flags & CC_TRACE) 1071 if (cctx->flags & CC_TRACE)
923 PL_runops = runops_trace; 1072 PL_runops = runops_trace;
924 1073
925 Zero (&myop, 1, LOGOP); 1074 Zero (&myop, 1, UNOP);
926 myop.op_next = PL_op; 1075 myop.op_next = PL_op;
927 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
928 1077
929 PUSHMARK (SP); 1078 PUSHMARK (SP);
930 EXTEND (SP, 2); 1079 EXTEND (SP, 2);
931 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1080 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
932 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
933 PUTBACK; 1082 PUTBACK;
934 PL_op = (OP *)&myop; 1083 PL_op = (OP *)&myop;
935 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
936 SPAGAIN; 1085 SPAGAIN;
937} 1086}
938 1087
1088/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void
1090transfer_tail (pTHX)
1091{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX);
1097
1098 if (expect_false (next->throw))
1099 {
1100 SV *exception = sv_2mortal (next->throw);
1101
1102 next->throw = 0;
1103 sv_setsv (ERRSV, exception);
1104 croak (0);
1105 }
1106}
1107
939/* 1108/*
940 * this is a _very_ stripped down perl interpreter ;) 1109 * this is a _very_ stripped down perl interpreter ;)
941 */ 1110 */
942static void 1111static void
943cctx_run (void *arg) 1112cctx_run (void *arg)
944{ 1113{
1114#ifdef USE_ITHREADS
1115# if CORO_PTHREAD
1116 PERL_SET_CONTEXT (coro_thx);
1117# endif
1118#endif
1119 {
945 dTHX; 1120 dTHX;
946 1121
947 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1122 /* normally we would need to skip the entersub here */
948 UNLOCK; 1123 /* not doing so will re-execute it, which is exactly what we want */
949
950 /* we now skip the entersub that lead to transfer() */
951 PL_op = PL_op->op_next; 1124 /* PL_nop = PL_nop->op_next */
952 1125
953 /* inject a fake subroutine call to cctx_init */ 1126 /* inject a fake subroutine call to cctx_init */
954 cctx_prepare (aTHX_ (coro_cctx *)arg); 1127 cctx_prepare (aTHX_ (coro_cctx *)arg);
955 1128
1129 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX);
1132
956 /* somebody or something will hit me for both perl_run and PL_restartop */ 1133 /* somebody or something will hit me for both perl_run and PL_restartop */
957 PL_restartop = PL_op; 1134 PL_restartop = PL_op;
958 perl_run (PL_curinterp); 1135 perl_run (PL_curinterp);
959 1136
960 /* 1137 /*
961 * If perl-run returns we assume exit() was being called or the coro 1138 * If perl-run returns we assume exit() was being called or the coro
962 * fell off the end, which seems to be the only valid (non-bug) 1139 * fell off the end, which seems to be the only valid (non-bug)
963 * reason for perl_run to return. We try to exit by jumping to the 1140 * reason for perl_run to return. We try to exit by jumping to the
964 * bootstrap-time "top" top_env, as we cannot restore the "main" 1141 * bootstrap-time "top" top_env, as we cannot restore the "main"
965 * coroutine as Coro has no such concept 1142 * coroutine as Coro has no such concept
966 */ 1143 */
967 PL_top_env = main_top_env; 1144 PL_top_env = main_top_env;
968 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1145 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1146 }
969} 1147}
970 1148
971static coro_cctx * 1149static coro_cctx *
972cctx_new () 1150cctx_new ()
973{ 1151{
974 coro_cctx *cctx; 1152 coro_cctx *cctx;
1153
1154 ++cctx_count;
1155 New (0, cctx, 1, coro_cctx);
1156
1157 cctx->gen = cctx_gen;
1158 cctx->flags = 0;
1159 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1160
1161 return cctx;
1162}
1163
1164/* create a new cctx only suitable as source */
1165static coro_cctx *
1166cctx_new_empty ()
1167{
1168 coro_cctx *cctx = cctx_new ();
1169
1170 cctx->sptr = 0;
1171 coro_create (&cctx->cctx, 0, 0, 0, 0);
1172
1173 return cctx;
1174}
1175
1176/* create a new cctx suitable as destination/running a perl interpreter */
1177static coro_cctx *
1178cctx_new_run ()
1179{
1180 coro_cctx *cctx = cctx_new ();
975 void *stack_start; 1181 void *stack_start;
976 size_t stack_size; 1182 size_t stack_size;
977 1183
978 ++cctx_count;
979
980 Newz (0, cctx, 1, coro_cctx);
981
982#if HAVE_MMAP 1184#if HAVE_MMAP
983 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1185 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
984 /* mmap supposedly does allocate-on-write for us */ 1186 /* mmap supposedly does allocate-on-write for us */
985 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1187 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
986 1188
987 if (cctx->sptr != (void *)-1) 1189 if (cctx->sptr != (void *)-1)
988 { 1190 {
989# if CORO_STACKGUARD 1191 #if CORO_STACKGUARD
990 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1192 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
991# endif 1193 #endif
992 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1194 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
993 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1195 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
994 cctx->flags |= CC_MAPPED; 1196 cctx->flags |= CC_MAPPED;
995 } 1197 }
996 else 1198 else
997#endif 1199#endif
998 { 1200 {
999 cctx->ssize = coro_stacksize * (long)sizeof (long); 1201 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1000 New (0, cctx->sptr, coro_stacksize, long); 1202 New (0, cctx->sptr, cctx_stacksize, long);
1001 1203
1002 if (!cctx->sptr) 1204 if (!cctx->sptr)
1003 { 1205 {
1004 perror ("FATAL: unable to allocate stack for coroutine"); 1206 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1005 _exit (EXIT_FAILURE); 1207 _exit (EXIT_FAILURE);
1006 } 1208 }
1007 1209
1008 stack_start = cctx->sptr; 1210 stack_start = cctx->sptr;
1009 stack_size = cctx->ssize; 1211 stack_size = cctx->ssize;
1010 } 1212 }
1011 1213
1012 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1214 #if CORO_USE_VALGRIND
1215 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1216 #endif
1217
1013 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1218 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1014 1219
1015 return cctx; 1220 return cctx;
1016} 1221}
1017 1222
… …
1020{ 1225{
1021 if (!cctx) 1226 if (!cctx)
1022 return; 1227 return;
1023 1228
1024 --cctx_count; 1229 --cctx_count;
1230 coro_destroy (&cctx->cctx);
1025 1231
1232 /* coro_transfer creates new, empty cctx's */
1233 if (cctx->sptr)
1234 {
1026#if CORO_USE_VALGRIND 1235 #if CORO_USE_VALGRIND
1027 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1236 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1028#endif 1237 #endif
1029 1238
1030#if HAVE_MMAP 1239#if HAVE_MMAP
1031 if (cctx->flags & CC_MAPPED) 1240 if (cctx->flags & CC_MAPPED)
1032 munmap (cctx->sptr, cctx->ssize); 1241 munmap (cctx->sptr, cctx->ssize);
1033 else 1242 else
1034#endif 1243#endif
1035 Safefree (cctx->sptr); 1244 Safefree (cctx->sptr);
1245 }
1036 1246
1037 Safefree (cctx); 1247 Safefree (cctx);
1038} 1248}
1039 1249
1040/* wether this cctx should be destructed */ 1250/* wether this cctx should be destructed */
1041#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1251#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1042 1252
1043static coro_cctx * 1253static coro_cctx *
1044cctx_get (pTHX_ int gimme) 1254cctx_get (pTHX)
1045{ 1255{
1046 while (expect_true (cctx_first[gimme])) 1256 while (expect_true (cctx_first))
1047 { 1257 {
1048 coro_cctx *cctx = cctx_first[gimme]; 1258 coro_cctx *cctx = cctx_first;
1049 cctx_first[gimme] = cctx->next; 1259 cctx_first = cctx->next;
1050 --cctx_idle[gimme]; 1260 --cctx_idle;
1051 1261
1052 if (expect_true (!CCTX_EXPIRED (cctx))) 1262 if (expect_true (!CCTX_EXPIRED (cctx)))
1053 return cctx; 1263 return cctx;
1054 1264
1055 cctx_destroy (cctx); 1265 cctx_destroy (cctx);
1056 } 1266 }
1057 1267
1058 assert (!gimme);
1059 return cctx_new (); 1268 return cctx_new_run ();
1060} 1269}
1061 1270
1062static void 1271static void
1063cctx_put (coro_cctx *cctx, int gimme) 1272cctx_put (coro_cctx *cctx)
1064{ 1273{
1274 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1275
1065 /* free another cctx if overlimit */ 1276 /* free another cctx if overlimit */
1066 if (expect_false (cctx_idle[gimme] >= MAX_IDLE_CCTX)) 1277 if (expect_false (cctx_idle >= cctx_max_idle))
1067 { 1278 {
1068 coro_cctx *first = cctx_first[gimme]; 1279 coro_cctx *first = cctx_first;
1069 cctx_first[gimme] = first->next; 1280 cctx_first = first->next;
1070 --cctx_idle[gimme]; 1281 --cctx_idle;
1071 1282
1072 cctx_destroy (first); 1283 cctx_destroy (first);
1073 } 1284 }
1074 1285
1075 ++cctx_idle[gimme]; 1286 ++cctx_idle;
1076 cctx->next = cctx_first[gimme]; 1287 cctx->next = cctx_first;
1077 cctx_first[gimme] = cctx; 1288 cctx_first = cctx;
1078} 1289}
1079 1290
1080/** coroutine switching *****************************************************/ 1291/** coroutine switching *****************************************************/
1081 1292
1082static void 1293static void
1083transfer_check (pTHX_ struct coro *prev, struct coro *next) 1294transfer_check (pTHX_ struct coro *prev, struct coro *next)
1084{ 1295{
1085 if (expect_true (prev != next)) 1296 if (expect_true (prev != next))
1086 { 1297 {
1087 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1088 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1299 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1089 1300
1090 if (expect_false (next->flags & CF_RUNNING)) 1301 if (expect_false (next->flags & CF_RUNNING))
1091 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1302 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1092 1303
1093 if (expect_false (next->flags & CF_DESTROYED)) 1304 if (expect_false (next->flags & CF_DESTROYED))
1094 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1305 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1095 1306
1096 if (
1097#if PERL_VERSION_ATLEAST (5,9,0) 1307#if !PERL_VERSION_ATLEAST (5,10,0)
1098 expect_false (PL_parser)
1099#else
1100 expect_false (PL_lex_state != LEX_NOTPARSING) 1308 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1101#endif
1102 )
1103 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1309 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1310#endif
1104 } 1311 }
1105} 1312}
1106 1313
1107/* always use the TRANSFER macro */ 1314/* always use the TRANSFER macro */
1108static void NOINLINE 1315static void NOINLINE
1109transfer (pTHX_ struct coro *prev, struct coro *next) 1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1110{ 1317{
1111 dSTACKLEVEL; 1318 dSTACKLEVEL;
1112 1319
1113 /* sometimes transfer is only called to set idle_sp */ 1320 /* sometimes transfer is only called to set idle_sp */
1114 if (expect_false (!next)) 1321 if (expect_false (!next))
1115 { 1322 {
1116 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel;
1117 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1324 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1118 } 1325 }
1119 else if (expect_true (prev != next)) 1326 else if (expect_true (prev != next))
1120 { 1327 {
1121 coro_cctx *prev__cctx; 1328 coro_cctx *prev__cctx;
1122 1329
1123 if (expect_false (prev->flags & CF_NEW)) 1330 if (expect_false (prev->flags & CF_NEW))
1124 { 1331 {
1125 /* create a new empty context */ 1332 /* create a new empty/source context */
1126 Newz (0, prev->cctx, 1, coro_cctx); 1333 prev->cctx = cctx_new_empty ();
1127 prev->flags &= ~CF_NEW; 1334 prev->flags &= ~CF_NEW;
1128 prev->flags |= CF_RUNNING; 1335 prev->flags |= CF_RUNNING;
1129 } 1336 }
1130 1337
1131 prev->flags &= ~CF_RUNNING; 1338 prev->flags &= ~CF_RUNNING;
1132 next->flags |= CF_RUNNING; 1339 next->flags |= CF_RUNNING;
1133 1340
1134 LOCK; 1341 /* first get rid of the old state */
1342 save_perl (aTHX_ prev);
1135 1343
1136 if (expect_false (next->flags & CF_NEW)) 1344 if (expect_false (next->flags & CF_NEW))
1137 { 1345 {
1138 /* need to start coroutine */ 1346 /* need to start coroutine */
1139 next->flags &= ~CF_NEW; 1347 next->flags &= ~CF_NEW;
1140 /* first get rid of the old state */
1141 save_perl (aTHX_ prev);
1142 /* setup coroutine call */ 1348 /* setup coroutine call */
1143 coro_setup (aTHX_ next); 1349 coro_setup (aTHX_ next);
1144 } 1350 }
1145 else 1351 else
1352 load_perl (aTHX_ next);
1353
1354 prev__cctx = prev->cctx;
1355
1356 /* possibly untie and reuse the cctx */
1357 if (expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel
1359 && !(prev__cctx->flags & CC_TRACE)
1360 && !force_cctx
1361 ))
1146 { 1362 {
1147 /* coroutine already started */
1148 save_perl (aTHX_ prev);
1149 load_perl (aTHX_ next);
1150 }
1151
1152 prev__cctx = prev->cctx;
1153
1154 /* possibly "free" the cctx */
1155 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
1156 {
1157 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1363 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1158 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1364 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1159 1365
1160 prev->cctx = 0; 1366 prev->cctx = 0;
1161 1367
1162 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1368 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1163 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1369 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1164 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1370 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1165 if (!next->cctx) 1371 if (!next->cctx)
1166 next->cctx = cctx_get (aTHX_ next->gimme); 1372 next->cctx = cctx_get (aTHX);
1167 1373
1168 cctx_put (prev__cctx, prev->gimme); 1374 cctx_put (prev__cctx);
1169 } 1375 }
1170 1376
1171 ++next->usecount; 1377 ++next->usecount;
1172 1378
1173 if (expect_true (!next->cctx)) 1379 if (expect_true (!next->cctx))
1174 next->cctx = cctx_get (aTHX_ next->gimme); 1380 next->cctx = cctx_get (aTHX);
1381
1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1383 transfer_next = next;
1175 1384
1176 if (expect_false (prev__cctx != next->cctx)) 1385 if (expect_false (prev__cctx != next->cctx))
1177 { 1386 {
1178 prev__cctx->top_env = PL_top_env; 1387 prev__cctx->top_env = PL_top_env;
1179 PL_top_env = next->cctx->top_env; 1388 PL_top_env = next->cctx->top_env;
1180 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1181 } 1390 }
1182 1391
1183 free_coro_mortal (aTHX); 1392 transfer_tail (aTHX);
1184 UNLOCK;
1185
1186 if (expect_false (prev->throw || next->throw))
1187 {
1188 struct coro *coro = SvSTATE (coro_current);
1189
1190 if (coro->throw)
1191 {
1192 SV *exception = coro->throw;
1193 coro->throw = 0;
1194 sv_setsv (ERRSV, exception);
1195 croak (0);
1196 }
1197 }
1198 } 1393 }
1199} 1394}
1200 1395
1201struct transfer_args
1202{
1203 struct coro *prev, *next;
1204};
1205
1206#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1207#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1208 1398
1209/** high level stuff ********************************************************/ 1399/** high level stuff ********************************************************/
1210 1400
1211static int 1401static int
1212coro_state_destroy (pTHX_ struct coro *coro) 1402coro_state_destroy (pTHX_ struct coro *coro)
1213{ 1403{
1214 if (coro->flags & CF_DESTROYED) 1404 if (coro->flags & CF_DESTROYED)
1215 return 0; 1405 return 0;
1406
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro);
1216 1409
1217 coro->flags |= CF_DESTROYED; 1410 coro->flags |= CF_DESTROYED;
1218 1411
1219 if (coro->flags & CF_READY) 1412 if (coro->flags & CF_READY)
1220 { 1413 {
1221 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1414 /* reduce nready, as destroying a ready coro effectively unreadies it */
1222 /* alternative: look through all ready queues and remove the coro */ 1415 /* alternative: look through all ready queues and remove the coro */
1223 LOCK;
1224 --coro_nready; 1416 --coro_nready;
1225 UNLOCK;
1226 } 1417 }
1227 else 1418 else
1228 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1229 1420
1230 if (coro->mainstack && coro->mainstack != main_mainstack) 1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1231 { 1422 {
1232 struct coro temp; 1423 struct coro temp;
1233 1424
1234 if (coro->flags & CF_RUNNING) 1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1235 croak ("FATAL: tried to destroy currently running coroutine");
1236 1426
1237 save_perl (aTHX_ &temp); 1427 save_perl (aTHX_ &temp);
1238 load_perl (aTHX_ coro); 1428 load_perl (aTHX_ coro);
1239 1429
1240 coro_destroy (aTHX_ coro); 1430 coro_destruct (aTHX_ coro);
1241 1431
1242 load_perl (aTHX_ &temp); 1432 load_perl (aTHX_ &temp);
1243 1433
1244 coro->slot = 0; 1434 coro->slot = 0;
1245 } 1435 }
… …
1291# define MGf_DUP 0 1481# define MGf_DUP 0
1292#endif 1482#endif
1293}; 1483};
1294 1484
1295static void 1485static void
1296prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1486prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1297{ 1487{
1298 ta->prev = SvSTATE (prev_sv); 1488 ta->prev = SvSTATE (prev_sv);
1299 ta->next = SvSTATE (next_sv); 1489 ta->next = SvSTATE (next_sv);
1300 TRANSFER_CHECK (*ta); 1490 TRANSFER_CHECK (*ta);
1301} 1491}
1302 1492
1303static void 1493static void
1304api_transfer (SV *prev_sv, SV *next_sv) 1494api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1305{ 1495{
1306 dTHX;
1307 struct transfer_args ta; 1496 struct coro_transfer_args ta;
1308 1497
1309 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1498 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1310 TRANSFER (ta); 1499 TRANSFER (ta, 1);
1311} 1500}
1312 1501
1313/** Coro ********************************************************************/ 1502/** Coro ********************************************************************/
1314 1503
1315static void 1504INLINE void
1316coro_enq (pTHX_ SV *coro_sv) 1505coro_enq (pTHX_ struct coro *coro)
1317{ 1506{
1318 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1319} 1508}
1320 1509
1321static SV * 1510INLINE SV *
1322coro_deq (pTHX_ int min_prio) 1511coro_deq (pTHX)
1323{ 1512{
1324 int prio = PRIO_MAX - PRIO_MIN; 1513 int prio;
1325 1514
1326 min_prio -= PRIO_MIN;
1327 if (min_prio < 0)
1328 min_prio = 0;
1329
1330 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1331 if (AvFILLp (coro_ready [prio]) >= 0) 1516 if (AvFILLp (coro_ready [prio]) >= 0)
1332 return av_shift (coro_ready [prio]); 1517 return av_shift (coro_ready [prio]);
1333 1518
1334 return 0; 1519 return 0;
1335} 1520}
1336 1521
1337static int 1522static int
1338api_ready (SV *coro_sv) 1523api_ready (pTHX_ SV *coro_sv)
1339{ 1524{
1340 dTHX;
1341 struct coro *coro; 1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1342 1528
1343 if (SvROK (coro_sv)) 1529 if (SvROK (coro_sv))
1344 coro_sv = SvRV (coro_sv); 1530 coro_sv = SvRV (coro_sv);
1345 1531
1346 coro = SvSTATE (coro_sv); 1532 coro = SvSTATE (coro_sv);
… …
1348 if (coro->flags & CF_READY) 1534 if (coro->flags & CF_READY)
1349 return 0; 1535 return 0;
1350 1536
1351 coro->flags |= CF_READY; 1537 coro->flags |= CF_READY;
1352 1538
1353 LOCK; 1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1354 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro);
1355 ++coro_nready; 1543 ++coro_nready;
1356 UNLOCK; 1544
1545 if (sv_hook)
1546 {
1547 dSP;
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD);
1555 SPAGAIN;
1556
1557 FREETMPS;
1558 LEAVE;
1559 }
1560
1561 if (xs_hook)
1562 xs_hook ();
1357 1563
1358 return 1; 1564 return 1;
1359} 1565}
1360 1566
1361static int 1567static int
1362api_is_ready (SV *coro_sv) 1568api_is_ready (pTHX_ SV *coro_sv)
1363{ 1569{
1364 dTHX;
1365 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1570 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1366} 1571}
1367 1572
1368static void 1573INLINE void
1369prepare_schedule (pTHX_ struct transfer_args *ta) 1574prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1370{ 1575{
1371 SV *prev_sv, *next_sv; 1576 SV *prev_sv, *next_sv;
1372 1577
1373 for (;;) 1578 for (;;)
1374 { 1579 {
1375 LOCK;
1376 next_sv = coro_deq (aTHX_ PRIO_MIN); 1580 next_sv = coro_deq (aTHX);
1377 1581
1378 /* nothing to schedule: call the idle handler */ 1582 /* nothing to schedule: call the idle handler */
1379 if (expect_false (!next_sv)) 1583 if (expect_false (!next_sv))
1380 { 1584 {
1381 dSP; 1585 dSP;
1382 UNLOCK;
1383 1586
1384 ENTER; 1587 ENTER;
1385 SAVETMPS; 1588 SAVETMPS;
1386 1589
1387 PUSHMARK (SP); 1590 PUSHMARK (SP);
1388 PUTBACK; 1591 PUTBACK;
1389 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1592 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1593 SPAGAIN;
1390 1594
1391 FREETMPS; 1595 FREETMPS;
1392 LEAVE; 1596 LEAVE;
1393 continue; 1597 continue;
1394 } 1598 }
1395 1599
1396 ta->next = SvSTATE (next_sv); 1600 ta->next = SvSTATE_hv (next_sv);
1397 1601
1398 /* cannot transfer to destroyed coros, skip and look for next */ 1602 /* cannot transfer to destroyed coros, skip and look for next */
1399 if (expect_false (ta->next->flags & CF_DESTROYED)) 1603 if (expect_false (ta->next->flags & CF_DESTROYED))
1400 { 1604 {
1401 UNLOCK;
1402 SvREFCNT_dec (next_sv); 1605 SvREFCNT_dec (next_sv);
1403 /* coro_nready is already taken care of by destroy */ 1606 /* coro_nready has already been taken care of by destroy */
1404 continue; 1607 continue;
1405 } 1608 }
1406 1609
1407 --coro_nready; 1610 --coro_nready;
1408 UNLOCK;
1409 break; 1611 break;
1410 } 1612 }
1411 1613
1412 /* free this only after the transfer */ 1614 /* free this only after the transfer */
1413 prev_sv = SvRV (coro_current); 1615 prev_sv = SvRV (coro_current);
1414 ta->prev = SvSTATE (prev_sv); 1616 ta->prev = SvSTATE_hv (prev_sv);
1415 TRANSFER_CHECK (*ta); 1617 TRANSFER_CHECK (*ta);
1416 assert (ta->next->flags & CF_READY); 1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1417 ta->next->flags &= ~CF_READY; 1619 ta->next->flags &= ~CF_READY;
1418 SvRV_set (coro_current, next_sv); 1620 SvRV_set (coro_current, next_sv);
1419 1621
1420 LOCK;
1421 free_coro_mortal (aTHX); 1622 free_coro_mortal (aTHX);
1422 coro_mortal = prev_sv; 1623 coro_mortal = prev_sv;
1423 UNLOCK;
1424} 1624}
1425 1625
1426static void 1626INLINE void
1427prepare_cede (pTHX_ struct transfer_args *ta) 1627prepare_cede (pTHX_ struct coro_transfer_args *ta)
1428{ 1628{
1429 api_ready (coro_current); 1629 api_ready (aTHX_ coro_current);
1430 prepare_schedule (aTHX_ ta); 1630 prepare_schedule (aTHX_ ta);
1431} 1631}
1432 1632
1633INLINE void
1634prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1635{
1636 SV *prev = SvRV (coro_current);
1637
1638 if (coro_nready)
1639 {
1640 prepare_schedule (aTHX_ ta);
1641 api_ready (aTHX_ prev);
1642 }
1643 else
1644 prepare_nop (aTHX_ ta);
1645}
1646
1647static void
1648api_schedule (pTHX)
1649{
1650 struct coro_transfer_args ta;
1651
1652 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1);
1654}
1655
1433static int 1656static int
1434prepare_cede_notself (pTHX_ struct transfer_args *ta) 1657api_cede (pTHX)
1435{ 1658{
1436 if (coro_nready) 1659 struct coro_transfer_args ta;
1437 { 1660
1438 SV *prev = SvRV (coro_current);
1439 prepare_schedule (aTHX_ ta); 1661 prepare_cede (aTHX_ &ta);
1440 api_ready (prev); 1662
1663 if (expect_true (ta.prev != ta.next))
1664 {
1665 TRANSFER (ta, 1);
1441 return 1; 1666 return 1;
1442 } 1667 }
1443 else 1668 else
1444 return 0; 1669 return 0;
1445} 1670}
1446 1671
1447static void
1448api_schedule (void)
1449{
1450 dTHX;
1451 struct transfer_args ta;
1452
1453 prepare_schedule (aTHX_ &ta);
1454 TRANSFER (ta);
1455}
1456
1457static int 1672static int
1458api_cede (void) 1673api_cede_notself (pTHX)
1459{ 1674{
1460 dTHX; 1675 if (coro_nready)
1676 {
1461 struct transfer_args ta; 1677 struct coro_transfer_args ta;
1462 1678
1463 prepare_cede (aTHX_ &ta); 1679 prepare_cede_notself (aTHX_ &ta);
1464
1465 if (expect_true (ta.prev != ta.next))
1466 {
1467 TRANSFER (ta); 1680 TRANSFER (ta, 1);
1468 return 1; 1681 return 1;
1469 } 1682 }
1470 else 1683 else
1471 return 0; 1684 return 0;
1472} 1685}
1473 1686
1474static int 1687static void
1475api_cede_notself (void)
1476{
1477 dTHX;
1478 struct transfer_args ta;
1479
1480 if (prepare_cede_notself (aTHX_ &ta))
1481 {
1482 TRANSFER (ta);
1483 return 1;
1484 }
1485 else
1486 return 0;
1487}
1488
1489static void
1490api_trace (SV *coro_sv, int flags) 1688api_trace (pTHX_ SV *coro_sv, int flags)
1491{ 1689{
1492 dTHX;
1493 struct coro *coro = SvSTATE (coro_sv); 1690 struct coro *coro = SvSTATE (coro_sv);
1494 1691
1495 if (flags & CC_TRACE) 1692 if (flags & CC_TRACE)
1496 { 1693 {
1497 if (!coro->cctx) 1694 if (!coro->cctx)
1498 coro->cctx = cctx_new (); 1695 coro->cctx = cctx_new_run ();
1499 else if (!(coro->cctx->flags & CC_TRACE)) 1696 else if (!(coro->cctx->flags & CC_TRACE))
1500 croak ("cannot enable tracing on coroutine with custom stack"); 1697 croak ("cannot enable tracing on coroutine with custom stack,");
1501 1698
1502 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1503 } 1700 }
1504 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1505 { 1702 {
… …
1510 else 1707 else
1511 coro->slot->runops = RUNOPS_DEFAULT; 1708 coro->slot->runops = RUNOPS_DEFAULT;
1512 } 1709 }
1513} 1710}
1514 1711
1712/*****************************************************************************/
1713/* PerlIO::cede */
1714
1715typedef struct
1716{
1717 PerlIOBuf base;
1718 NV next, every;
1719} PerlIOCede;
1720
1721static IV
1722PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1723{
1724 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1725
1726 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1727 self->next = nvtime () + self->every;
1728
1729 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1730}
1731
1732static SV *
1733PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1734{
1735 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1736
1737 return newSVnv (self->every);
1738}
1739
1740static IV
1741PerlIOCede_flush (pTHX_ PerlIO *f)
1742{
1743 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1744 double now = nvtime ();
1745
1746 if (now >= self->next)
1747 {
1748 api_cede (aTHX);
1749 self->next = now + self->every;
1750 }
1751
1752 return PerlIOBuf_flush (aTHX_ f);
1753}
1754
1755static PerlIO_funcs PerlIO_cede =
1756{
1757 sizeof(PerlIO_funcs),
1758 "cede",
1759 sizeof(PerlIOCede),
1760 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1761 PerlIOCede_pushed,
1762 PerlIOBuf_popped,
1763 PerlIOBuf_open,
1764 PerlIOBase_binmode,
1765 PerlIOCede_getarg,
1766 PerlIOBase_fileno,
1767 PerlIOBuf_dup,
1768 PerlIOBuf_read,
1769 PerlIOBuf_unread,
1770 PerlIOBuf_write,
1771 PerlIOBuf_seek,
1772 PerlIOBuf_tell,
1773 PerlIOBuf_close,
1774 PerlIOCede_flush,
1775 PerlIOBuf_fill,
1776 PerlIOBase_eof,
1777 PerlIOBase_error,
1778 PerlIOBase_clearerr,
1779 PerlIOBase_setlinebuf,
1780 PerlIOBuf_get_base,
1781 PerlIOBuf_bufsiz,
1782 PerlIOBuf_get_ptr,
1783 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt,
1785};
1786
1787/*****************************************************************************/
1788
1789static const CV *slf_cv; /* for quick consistency check */
1790
1791static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1792static SV *slf_arg0;
1793static SV *slf_arg1;
1794static SV *slf_arg2;
1795
1796/* this restores the stack in the case we patched the entersub, to */
1797/* recreate the stack frame as perl will on following calls */
1798/* since entersub cleared the stack */
1799static OP *
1800pp_restore (pTHX)
1801{
1802 dSP;
1803
1804 PUSHMARK (SP);
1805
1806 EXTEND (SP, 3);
1807 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1808 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1809 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1810 PUSHs ((SV *)CvGV (slf_cv));
1811
1812 RETURNOP (slf_restore.op_first);
1813}
1814
1815static void
1816slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817{
1818 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819}
1820
1821static void
1822slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823{
1824 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826 frame->prepare = slf_prepare_set_stacklevel;
1827 frame->check = slf_check_nop;
1828 frame->data = (void *)SvIV (arg [0]);
1829}
1830
1831static void
1832slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833{
1834 SV **arg = (SV **)slf_frame.data;
1835
1836 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837}
1838
1839static void
1840slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 if (items != 2)
1843 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845 frame->prepare = slf_prepare_transfer;
1846 frame->check = slf_check_nop;
1847 frame->data = (void *)arg; /* let's hope it will stay valid */
1848}
1849
1850static void
1851slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede;
1861 frame->check = slf_check_nop;
1862}
1863
1864static void
1865slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 frame->prepare = prepare_cede_notself;
1868 frame->check = slf_check_nop;
1869}
1870
1871/* we hijack an hopefully unused CV flag for our purposes */
1872#define CVf_SLF 0x4000
1873
1874/*
1875 * these not obviously related functions are all rolled into one
1876 * function to increase chances that they all will call transfer with the same
1877 * stack offset
1878 * SLF stands for "schedule-like-function".
1879 */
1880static OP *
1881pp_slf (pTHX)
1882{
1883 I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885 /* set up the slf frame, unless it has already been set-up */
1886 /* the latter happens when a new coro has been started */
1887 /* or when a new cctx was attached to an existing coroutine */
1888 if (expect_true (!slf_frame.prepare))
1889 {
1890 /* first iteration */
1891 dSP;
1892 SV **arg = PL_stack_base + TOPMARK + 1;
1893 int items = SP - arg; /* args without function object */
1894 SV *gv = *sp;
1895
1896 /* do a quick consistency check on the "function" object, and if it isn't */
1897 /* for us, divert to the real entersub */
1898 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899 return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901 /* pop args */
1902 SP = PL_stack_base + POPMARK;
1903
1904 if (!(PL_op->op_flags & OPf_STACKED))
1905 {
1906 /* ampersand-form of call, use @_ instead of stack */
1907 AV *av = GvAV (PL_defgv);
1908 arg = AvARRAY (av);
1909 items = AvFILLp (av) + 1;
1910 }
1911
1912 PUTBACK;
1913
1914 /* now call the init function, which needs to set up slf_frame */
1915 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1917 }
1918
1919 /* now that we have a slf_frame, interpret it! */
1920 /* we use a callback system not to make the code needlessly */
1921 /* complicated, but so we can run multiple perl coros from one cctx */
1922
1923 do
1924 {
1925 struct coro_transfer_args ta;
1926
1927 slf_frame.prepare (aTHX_ &ta);
1928 TRANSFER (ta, 0);
1929
1930 checkmark = PL_stack_sp - PL_stack_base;
1931 }
1932 while (slf_frame.check (aTHX_ &slf_frame));
1933
1934 {
1935 dSP;
1936 SV **bot = PL_stack_base + checkmark;
1937 int gimme = GIMME_V;
1938
1939 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941 /* make sure we put something on the stack in scalar context */
1942 if (gimme == G_SCALAR)
1943 {
1944 if (sp == bot)
1945 XPUSHs (&PL_sv_undef);
1946
1947 SP = bot + 1;
1948 }
1949
1950 PUTBACK;
1951 }
1952
1953 return NORMAL;
1954}
1955
1956static void
1957api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958{
1959 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962 && PL_op->op_ppaddr != pp_slf)
1963 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965 if (items > 3)
1966 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968 CvFLAGS (cv) |= CVf_SLF;
1969 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970 slf_cv = cv;
1971
1972 /* we patch the op, and then re-run the whole call */
1973 /* we have to put the same argument on the stack for this to work */
1974 /* and this will be done by pp_restore */
1975 slf_restore.op_next = (OP *)&slf_restore;
1976 slf_restore.op_type = OP_CUSTOM;
1977 slf_restore.op_ppaddr = pp_restore;
1978 slf_restore.op_first = PL_op;
1979
1980 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984 PL_op->op_ppaddr = pp_slf;
1985
1986 PL_op = (OP *)&slf_restore;
1987}
1988
1989/*****************************************************************************/
1990
1991static void
1992coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993{
1994 SV *count_sv = AvARRAY (av)[0];
1995 IV count = SvIVX (count_sv);
1996
1997 count += adjust;
1998 SvIVX (count_sv) = count;
1999
2000 /* now wake up as many waiters as are expected to lock */
2001 while (count > 0 && AvFILLp (av) > 0)
2002 {
2003 SV *cb;
2004
2005 /* swap first two elements so we can shift a waiter */
2006 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av);
2009
2010 if (SvOBJECT (cb))
2011 api_ready (aTHX_ cb);
2012 else
2013 croak ("callbacks not yet supported");
2014
2015 SvREFCNT_dec (cb);
2016
2017 --count;
2018 }
2019}
2020
2021static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2023{
2024 /* call $sem->adjust (0) to possibly wake up some other waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2026}
2027
2028static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2030{
2031 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0];
2033
2034 if (SvIVX (count_sv) > 0)
2035 {
2036 SvSTATE_current->on_destroy = 0;
2037 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2038 return 0;
2039 }
2040 else
2041 {
2042 int i;
2043 /* if we were woken up but can't down, we look through the whole */
2044 /* waiters list and only add us if we aren't in there already */
2045 /* this avoids some degenerate memory usage cases */
2046
2047 for (i = 1; i <= AvFILLp (av); ++i)
2048 if (AvARRAY (av)[i] == SvRV (coro_current))
2049 return 1;
2050
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2052 return 1;
2053 }
2054}
2055
2056static void
2057slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{
2059 AV *av = (AV *)SvRV (arg [0]);
2060
2061 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 {
2063 frame->data = (void *)av;
2064 frame->prepare = prepare_nop;
2065 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2066 }
2067 else
2068 {
2069 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2070
2071 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2072 frame->prepare = prepare_schedule;
2073
2074 /* to avoid race conditions when a woken-up coro gets terminated */
2075 /* we arrange for a temporary on_destroy that calls adjust (0) */
2076 assert (!SvSTATE_current->on_destroy);//D
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2078 }
2079
2080 frame->check = slf_check_semaphore_down;
2081
2082}
2083
2084/*****************************************************************************/
2085
2086#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2087
2088/* create a closure from XS, returns a code reference */
2089/* the arg can be accessed via GENSUB_ARG from the callback */
2090/* the callback must use dXSARGS/XSRETURN */
2091static SV *
2092gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2093{
2094 CV *cv = (CV *)NEWSV (0, 0);
2095
2096 sv_upgrade ((SV *)cv, SVt_PVCV);
2097
2098 CvANON_on (cv);
2099 CvISXSUB_on (cv);
2100 CvXSUB (cv) = xsub;
2101 GENSUB_ARG = arg;
2102
2103 return newRV_noinc ((SV *)cv);
2104}
2105
2106/*****************************************************************************/
2107
1515MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2108MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1516 2109
1517PROTOTYPES: DISABLE 2110PROTOTYPES: DISABLE
1518 2111
1519BOOT: 2112BOOT:
1520{ 2113{
1521#ifdef USE_ITHREADS 2114#ifdef USE_ITHREADS
1522 MUTEX_INIT (&coro_mutex); 2115# if CORO_PTHREAD
2116 coro_thx = PERL_GET_CONTEXT;
2117# endif
1523#endif 2118#endif
1524 BOOT_PAGESIZE; 2119 BOOT_PAGESIZE;
1525 2120
1526 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2121 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1527 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2122 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1528 2123
2124 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2125 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2126 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2127
1529 hv_sig = coro_get_hv ("SIG", TRUE); 2128 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1530 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 2129 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1531 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 2130 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1532
1533 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1534 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1535 2131
1536 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2132 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1537 2133
1538 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2134 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1539 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2135 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1544 main_top_env = PL_top_env; 2140 main_top_env = PL_top_env;
1545 2141
1546 while (main_top_env->je_prev) 2142 while (main_top_env->je_prev)
1547 main_top_env = main_top_env->je_prev; 2143 main_top_env = main_top_env->je_prev;
1548 2144
2145 {
2146 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2147
2148 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2149 hv_store_ent (PL_custom_op_names, slf,
2150 newSVpv ("coro_slf", 0), 0);
2151
2152 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2153 hv_store_ent (PL_custom_op_descs, slf,
2154 newSVpv ("coro schedule like function", 0), 0);
2155 }
2156
1549 coroapi.ver = CORO_API_VERSION; 2157 coroapi.ver = CORO_API_VERSION;
1550 coroapi.rev = CORO_API_REVISION; 2158 coroapi.rev = CORO_API_REVISION;
2159
1551 coroapi.transfer = api_transfer; 2160 coroapi.transfer = api_transfer;
2161
2162 coroapi.sv_state = SvSTATE_;
2163 coroapi.execute_slf = api_execute_slf;
2164 coroapi.prepare_nop = prepare_nop;
2165 coroapi.prepare_schedule = prepare_schedule;
2166 coroapi.prepare_cede = prepare_cede;
2167 coroapi.prepare_cede_notself = prepare_cede_notself;
2168
2169 {
2170 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2171
2172 if (!svp) croak ("Time::HiRes is required");
2173 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2174
2175 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2176 }
1552 2177
1553 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2178 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1554} 2179}
1555 2180
1556SV * 2181SV *
1557new (char *klass, ...) 2182new (char *klass, ...)
1558 CODE: 2183 CODE:
1559{ 2184{
1560 struct coro *coro; 2185 struct coro *coro;
2186 MAGIC *mg;
1561 HV *hv; 2187 HV *hv;
1562 int i; 2188 int i;
1563 2189
1564 Newz (0, coro, 1, struct coro); 2190 Newz (0, coro, 1, struct coro);
1565 coro->args = newAV (); 2191 coro->args = newAV ();
… …
1568 if (coro_first) coro_first->prev = coro; 2194 if (coro_first) coro_first->prev = coro;
1569 coro->next = coro_first; 2195 coro->next = coro_first;
1570 coro_first = coro; 2196 coro_first = coro;
1571 2197
1572 coro->hv = hv = newHV (); 2198 coro->hv = hv = newHV ();
1573 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2199 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2200 mg->mg_flags |= MGf_DUP;
1574 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2201 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1575 2202
1576 av_extend (coro->args, items - 1); 2203 av_extend (coro->args, items - 1);
1577 for (i = 1; i < items; i++) 2204 for (i = 1; i < items; i++)
1578 av_push (coro->args, newSVsv (ST (i))); 2205 av_push (coro->args, newSVsv (ST (i)));
1579} 2206}
1580 OUTPUT: 2207 OUTPUT:
1581 RETVAL 2208 RETVAL
1582 2209
1583# these not obviously related functions are all rolled into the same xs
1584# function to increase chances that they all will call transfer with the same
1585# stack offset
1586void 2210void
1587_set_stacklevel (...) 2211_set_stacklevel (...)
1588 ALIAS: 2212 CODE:
1589 Coro::State::transfer = 1 2213 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
1590 Coro::schedule = 2
1591 Coro::cede = 3
1592 Coro::cede_notself = 4
1593 CODE:
1594{
1595 struct transfer_args ta;
1596 2214
1597 switch (ix) 2215void
1598 { 2216transfer (...)
1599 case 0: 2217 PROTOTYPE: $$
1600 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2218 CODE:
1601 ta.next = 0; 2219 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items);
1602 break;
1603
1604 case 1:
1605 if (items != 2)
1606 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1607
1608 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1609 break;
1610
1611 case 2:
1612 prepare_schedule (aTHX_ &ta);
1613 break;
1614
1615 case 3:
1616 prepare_cede (aTHX_ &ta);
1617 break;
1618
1619 case 4:
1620 if (!prepare_cede_notself (aTHX_ &ta))
1621 XSRETURN_EMPTY;
1622
1623 break;
1624 }
1625
1626 BARRIER;
1627 PUTBACK;
1628 TRANSFER (ta);
1629 SPAGAIN; /* might be the sp of a different coroutine now */
1630 /* be extra careful not to ever do anything after TRANSFER */
1631}
1632 2220
1633bool 2221bool
1634_destroy (SV *coro_sv) 2222_destroy (SV *coro_sv)
1635 CODE: 2223 CODE:
1636 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2224 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1637 OUTPUT: 2225 OUTPUT:
1638 RETVAL 2226 RETVAL
1639 2227
1640void 2228void
1641_exit (code) 2229_exit (int code)
1642 int code
1643 PROTOTYPE: $ 2230 PROTOTYPE: $
1644 CODE: 2231 CODE:
1645 _exit (code); 2232 _exit (code);
1646 2233
1647int 2234int
1648cctx_stacksize (int new_stacksize = 0) 2235cctx_stacksize (int new_stacksize = 0)
2236 PROTOTYPE: ;$
1649 CODE: 2237 CODE:
1650 RETVAL = coro_stacksize; 2238 RETVAL = cctx_stacksize;
1651 if (new_stacksize) 2239 if (new_stacksize)
2240 {
1652 coro_stacksize = new_stacksize; 2241 cctx_stacksize = new_stacksize;
2242 ++cctx_gen;
2243 }
1653 OUTPUT: 2244 OUTPUT:
1654 RETVAL 2245 RETVAL
1655 2246
1656int 2247int
2248cctx_max_idle (int max_idle = 0)
2249 PROTOTYPE: ;$
2250 CODE:
2251 RETVAL = cctx_max_idle;
2252 if (max_idle > 1)
2253 cctx_max_idle = max_idle;
2254 OUTPUT:
2255 RETVAL
2256
2257int
1657cctx_count () 2258cctx_count ()
2259 PROTOTYPE:
1658 CODE: 2260 CODE:
1659 RETVAL = cctx_count; 2261 RETVAL = cctx_count;
1660 OUTPUT: 2262 OUTPUT:
1661 RETVAL 2263 RETVAL
1662 2264
1663int 2265int
1664cctx_idle () 2266cctx_idle ()
2267 PROTOTYPE:
1665 CODE: 2268 CODE:
1666 RETVAL = cctx_idle[0] + cctx_idle[1] + cctx_idle[2]; 2269 RETVAL = cctx_idle;
1667 OUTPUT: 2270 OUTPUT:
1668 RETVAL 2271 RETVAL
1669 2272
1670void 2273void
1671list () 2274list ()
2275 PROTOTYPE:
1672 PPCODE: 2276 PPCODE:
1673{ 2277{
1674 struct coro *coro; 2278 struct coro *coro;
1675 for (coro = coro_first; coro; coro = coro->next) 2279 for (coro = coro_first; coro; coro = coro->next)
1676 if (coro->hv) 2280 if (coro->hv)
… …
1681call (Coro::State coro, SV *coderef) 2285call (Coro::State coro, SV *coderef)
1682 ALIAS: 2286 ALIAS:
1683 eval = 1 2287 eval = 1
1684 CODE: 2288 CODE:
1685{ 2289{
1686 if (coro->mainstack) 2290 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1687 { 2291 {
1688 struct coro temp; 2292 struct coro temp;
1689 2293
1690 if (!(coro->flags & CF_RUNNING)) 2294 if (!(coro->flags & CF_RUNNING))
1691 { 2295 {
2296 PUTBACK;
1692 save_perl (aTHX_ &temp); 2297 save_perl (aTHX_ &temp);
1693 load_perl (aTHX_ coro); 2298 load_perl (aTHX_ coro);
1694 } 2299 }
1695 2300
1696 { 2301 {
… …
1705 eval_sv (coderef, 0); 2310 eval_sv (coderef, 0);
1706 else 2311 else
1707 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2312 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1708 2313
1709 POPSTACK; 2314 POPSTACK;
2315 SPAGAIN;
1710 FREETMPS; 2316 FREETMPS;
1711 LEAVE; 2317 LEAVE;
1712 PUTBACK; 2318 PUTBACK;
1713 } 2319 }
1714 2320
1715 if (!(coro->flags & CF_RUNNING)) 2321 if (!(coro->flags & CF_RUNNING))
1716 { 2322 {
1717 save_perl (aTHX_ coro); 2323 save_perl (aTHX_ coro);
1718 load_perl (aTHX_ &temp); 2324 load_perl (aTHX_ &temp);
2325 SPAGAIN;
1719 } 2326 }
1720 } 2327 }
1721} 2328}
1722 2329
1723SV * 2330SV *
… …
1732 RETVAL = boolSV (coro->flags & ix); 2339 RETVAL = boolSV (coro->flags & ix);
1733 OUTPUT: 2340 OUTPUT:
1734 RETVAL 2341 RETVAL
1735 2342
1736void 2343void
2344throw (Coro::State self, SV *throw = &PL_sv_undef)
2345 PROTOTYPE: $;$
2346 CODE:
2347 SvREFCNT_dec (self->throw);
2348 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2349
2350void
1737api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2351api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2352 PROTOTYPE: $;$
2353 C_ARGS: aTHX_ coro, flags
1738 2354
1739SV * 2355SV *
1740has_stack (Coro::State coro) 2356has_cctx (Coro::State coro)
1741 PROTOTYPE: $ 2357 PROTOTYPE: $
1742 CODE: 2358 CODE:
1743 RETVAL = boolSV (!!coro->cctx); 2359 RETVAL = boolSV (!!coro->cctx);
1744 OUTPUT: 2360 OUTPUT:
1745 RETVAL 2361 RETVAL
… …
1750 CODE: 2366 CODE:
1751 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2367 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1752 OUTPUT: 2368 OUTPUT:
1753 RETVAL 2369 RETVAL
1754 2370
1755IV 2371UV
1756rss (Coro::State coro) 2372rss (Coro::State coro)
1757 PROTOTYPE: $ 2373 PROTOTYPE: $
1758 ALIAS: 2374 ALIAS:
1759 usecount = 1 2375 usecount = 1
1760 CODE: 2376 CODE:
… …
1764 case 1: RETVAL = coro->usecount; break; 2380 case 1: RETVAL = coro->usecount; break;
1765 } 2381 }
1766 OUTPUT: 2382 OUTPUT:
1767 RETVAL 2383 RETVAL
1768 2384
2385void
2386force_cctx ()
2387 PROTOTYPE:
2388 CODE:
2389 SvSTATE_current->cctx->idle_sp = 0;
2390
2391void
2392swap_defsv (Coro::State self)
2393 PROTOTYPE: $
2394 ALIAS:
2395 swap_defav = 1
2396 CODE:
2397 if (!self->slot)
2398 croak ("cannot swap state with coroutine that has no saved state,");
2399 else
2400 {
2401 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2402 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2403
2404 SV *tmp = *src; *src = *dst; *dst = tmp;
2405 }
1769 2406
1770MODULE = Coro::State PACKAGE = Coro 2407MODULE = Coro::State PACKAGE = Coro
1771 2408
1772BOOT: 2409BOOT:
1773{ 2410{
1774 int i; 2411 int i;
1775 2412
1776 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1777 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1778 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 2413 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2414 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2415 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1779 2416
1780 coro_current = coro_get_sv ("Coro::current", FALSE); 2417 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1781 SvREADONLY_on (coro_current); 2418 SvREADONLY_on (coro_current);
1782 2419
1783 coro_stash = gv_stashpv ("Coro", TRUE); 2420 coro_stash = gv_stashpv ("Coro", TRUE);
1784 2421
1785 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2422 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
… …
1791 2428
1792 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2429 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1793 coro_ready[i] = newAV (); 2430 coro_ready[i] = newAV ();
1794 2431
1795 { 2432 {
1796 SV *sv = perl_get_sv ("Coro::API", TRUE); 2433 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1797 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1798 2434
1799 coroapi.schedule = api_schedule; 2435 coroapi.schedule = api_schedule;
1800 coroapi.cede = api_cede; 2436 coroapi.cede = api_cede;
1801 coroapi.cede_notself = api_cede_notself; 2437 coroapi.cede_notself = api_cede_notself;
1802 coroapi.ready = api_ready; 2438 coroapi.ready = api_ready;
1803 coroapi.is_ready = api_is_ready; 2439 coroapi.is_ready = api_is_ready;
1804 coroapi.nready = &coro_nready; 2440 coroapi.nready = coro_nready;
1805 coroapi.current = coro_current; 2441 coroapi.current = coro_current;
1806 2442
1807 GCoroAPI = &coroapi; 2443 GCoroAPI = &coroapi;
1808 sv_setiv (sv, (IV)&coroapi); 2444 sv_setiv (sv, (IV)&coroapi);
1809 SvREADONLY_on (sv); 2445 SvREADONLY_on (sv);
1810 } 2446 }
1811} 2447}
2448
2449void
2450schedule (...)
2451 CODE:
2452 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0);
2453
2454void
2455cede (...)
2456 CODE:
2457 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0);
2458
2459void
2460cede_notself (...)
2461 CODE:
2462 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0);
1812 2463
1813void 2464void
1814_set_current (SV *current) 2465_set_current (SV *current)
1815 PROTOTYPE: $ 2466 PROTOTYPE: $
1816 CODE: 2467 CODE:
1817 SvREFCNT_dec (SvRV (coro_current)); 2468 SvREFCNT_dec (SvRV (coro_current));
1818 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2469 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2470
2471void
2472_set_readyhook (SV *hook)
2473 PROTOTYPE: $
2474 CODE:
2475 SvREFCNT_dec (coro_readyhook);
2476 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1819 2477
1820int 2478int
1821prio (Coro::State coro, int newprio = 0) 2479prio (Coro::State coro, int newprio = 0)
2480 PROTOTYPE: $;$
1822 ALIAS: 2481 ALIAS:
1823 nice = 1 2482 nice = 1
1824 CODE: 2483 CODE:
1825{ 2484{
1826 RETVAL = coro->prio; 2485 RETVAL = coro->prio;
… …
1841 2500
1842SV * 2501SV *
1843ready (SV *self) 2502ready (SV *self)
1844 PROTOTYPE: $ 2503 PROTOTYPE: $
1845 CODE: 2504 CODE:
1846 RETVAL = boolSV (api_ready (self)); 2505 RETVAL = boolSV (api_ready (aTHX_ self));
1847 OUTPUT: 2506 OUTPUT:
1848 RETVAL 2507 RETVAL
1849 2508
1850int 2509int
1851nready (...) 2510nready (...)
… …
1853 CODE: 2512 CODE:
1854 RETVAL = coro_nready; 2513 RETVAL = coro_nready;
1855 OUTPUT: 2514 OUTPUT:
1856 RETVAL 2515 RETVAL
1857 2516
1858void
1859throw (Coro::State self, SV *throw = &PL_sv_undef)
1860 PROTOTYPE: $;$
1861 CODE:
1862 SvREFCNT_dec (self->throw);
1863 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1864
1865# for async_pool speedup 2517# for async_pool speedup
1866void 2518void
1867_pool_1 (SV *cb) 2519_pool_1 (SV *cb)
1868 CODE: 2520 CODE:
1869{ 2521{
1870 struct coro *coro = SvSTATE (coro_current);
1871 HV *hv = (HV *)SvRV (coro_current); 2522 HV *hv = (HV *)SvRV (coro_current);
2523 struct coro *coro = SvSTATE_hv ((SV *)hv);
1872 AV *defav = GvAV (PL_defgv); 2524 AV *defav = GvAV (PL_defgv);
1873 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0); 2525 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1874 AV *invoke_av; 2526 AV *invoke_av;
1875 int i, len; 2527 int i, len;
1876 2528
1877 if (!invoke) 2529 if (!invoke)
2530 {
2531 SV *old = PL_diehook;
2532 PL_diehook = 0;
2533 SvREFCNT_dec (old);
1878 croak ("\3async_pool terminate\2\n"); 2534 croak ("\3async_pool terminate\2\n");
2535 }
1879 2536
1880 SvREFCNT_dec (coro->saved_deffh); 2537 SvREFCNT_dec (coro->saved_deffh);
1881 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 2538 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1882 2539
1883 hv_store (hv, "desc", sizeof ("desc") - 1, 2540 hv_store (hv, "desc", sizeof ("desc") - 1,
1884 newSVpvn (strpair ("[async_pool]")), 0); 2541 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1885 2542
1886 invoke_av = (AV *)SvRV (invoke); 2543 invoke_av = (AV *)SvRV (invoke);
1887 len = av_len (invoke_av); 2544 len = av_len (invoke_av);
1888 2545
1889 sv_setsv (cb, AvARRAY (invoke_av)[0]); 2546 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1890 2547
1891 if (len > 0) 2548 if (len > 0)
1892 { 2549 {
1893 av_fill (defav, len - 1); 2550 av_fill (defav, len - 1);
1894 for (i = 0; i < len; ++i) 2551 for (i = 0; i < len; ++i)
1895 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 2552 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1896 } 2553 }
1897
1898 SvREFCNT_dec (invoke);
1899} 2554}
1900 2555
1901void 2556void
1902_pool_2 (SV *cb) 2557_pool_2 (SV *cb)
1903 CODE: 2558 CODE:
1904{ 2559{
1905 struct coro *coro = SvSTATE (coro_current); 2560 struct coro *coro = SvSTATE_current;
1906 2561
1907 sv_setsv (cb, &PL_sv_undef); 2562 sv_setsv (cb, &PL_sv_undef);
1908 2563
1909 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2564 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1910 coro->saved_deffh = 0; 2565 coro->saved_deffh = 0;
1911 2566
1912 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2567 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1913 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2568 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2569 {
2570 SV *old = PL_diehook;
2571 PL_diehook = 0;
2572 SvREFCNT_dec (old);
1914 croak ("\3async_pool terminate\2\n"); 2573 croak ("\3async_pool terminate\2\n");
2574 }
1915 2575
1916 av_clear (GvAV (PL_defgv)); 2576 av_clear (GvAV (PL_defgv));
1917 hv_store ((HV *)SvRV (coro_current), strpair ("desc"), 2577 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1918 newSVpvn (strpair ("[async_pool idle]")), 0); 2578 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1919 2579
1920 coro->prio = 0; 2580 coro->prio = 0;
1921 2581
1922 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2582 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1923 api_trace (coro_current, 0); 2583 api_trace (aTHX_ coro_current, 0);
1924 2584
1925 av_push (av_async_pool, newSVsv (coro_current)); 2585 av_push (av_async_pool, newSVsv (coro_current));
1926} 2586}
1927 2587
1928 2588
1929MODULE = Coro::State PACKAGE = Coro::AIO 2589MODULE = Coro::State PACKAGE = Coro::AIO
1930 2590
1931SV * 2591void
1932_get_state () 2592_get_state (SV *self)
2593 PROTOTYPE: $
1933 CODE: 2594 PPCODE:
1934{ 2595{
1935 struct io_state *data; 2596 AV *defav = GvAV (PL_defgv);
1936 2597 AV *av = newAV ();
2598 int i;
1937 RETVAL = newSV (sizeof (struct io_state)); 2599 SV *data_sv = newSV (sizeof (struct io_state));
1938 data = (struct io_state *)SvPVX (RETVAL); 2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1939 SvCUR_set (RETVAL, sizeof (struct io_state)); 2601 SvCUR_set (data_sv, sizeof (struct io_state));
1940 SvPOK_only (RETVAL); 2602 SvPOK_only (data_sv);
1941 2603
1942 data->errorno = errno; 2604 data->errorno = errno;
1943 data->laststype = PL_laststype; 2605 data->laststype = PL_laststype;
1944 data->laststatval = PL_laststatval; 2606 data->laststatval = PL_laststatval;
1945 data->statcache = PL_statcache; 2607 data->statcache = PL_statcache;
2608
2609 av_extend (av, AvFILLp (defav) + 1 + 1);
2610
2611 for (i = 0; i <= AvFILLp (defav); ++i)
2612 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2613
2614 av_push (av, data_sv);
2615
2616 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2617
2618 api_ready (aTHX_ self);
1946} 2619}
1947 OUTPUT:
1948 RETVAL
1949 2620
1950void 2621void
1951_set_state (char *data_) 2622_set_state (SV *state)
1952 PROTOTYPE: $ 2623 PROTOTYPE: $
1953 CODE: 2624 PPCODE:
1954{ 2625{
1955 struct io_state *data = (void *)data_; 2626 AV *av = (AV *)SvRV (state);
2627 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2628 int i;
1956 2629
1957 errno = data->errorno; 2630 errno = data->errorno;
1958 PL_laststype = data->laststype; 2631 PL_laststype = data->laststype;
1959 PL_laststatval = data->laststatval; 2632 PL_laststatval = data->laststatval;
1960 PL_statcache = data->statcache; 2633 PL_statcache = data->statcache;
1961}
1962 2634
2635 EXTEND (SP, AvFILLp (av));
2636 for (i = 0; i < AvFILLp (av); ++i)
2637 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2638}
2639
2640
2641MODULE = Coro::State PACKAGE = Coro::AnyEvent
2642
2643BOOT:
2644 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2645
2646void
2647_schedule (...)
2648 CODE:
2649{
2650 static int incede;
2651
2652 api_cede_notself (aTHX);
2653
2654 ++incede;
2655 while (coro_nready >= incede && api_cede (aTHX))
2656 ;
2657
2658 sv_setsv (sv_activity, &PL_sv_undef);
2659 if (coro_nready >= incede)
2660 {
2661 PUSHMARK (SP);
2662 PUTBACK;
2663 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2664 SPAGAIN;
2665 }
2666
2667 --incede;
2668}
2669
2670
2671MODULE = Coro::State PACKAGE = PerlIO::cede
2672
2673BOOT:
2674 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2675
2676MODULE = Coro::State PACKAGE = Coro::Semaphore
2677
2678SV *
2679new (SV *klass, SV *count_ = 0)
2680 CODE:
2681{
2682 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2683 AV *av = newAV ();
2684 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1));
2685 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv)));
2686}
2687 OUTPUT:
2688 RETVAL
2689
2690SV *
2691count (SV *self)
2692 CODE:
2693 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2694 OUTPUT:
2695 RETVAL
2696
2697void
2698up (SV *self, int adjust = 1)
2699 ALIAS:
2700 adjust = 1
2701 CODE:
2702 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2703
2704void
2705down (SV *self)
2706 CODE:
2707 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1);
2708
2709void
2710try (SV *self)
2711 PPCODE:
2712{
2713 AV *av = (AV *)SvRV (self);
2714 SV *count_sv = AvARRAY (av)[0];
2715 IV count = SvIVX (count_sv);
2716
2717 if (count > 0)
2718 {
2719 --count;
2720 SvIVX (count_sv) = count;
2721 XSRETURN_YES;
2722 }
2723 else
2724 XSRETURN_NO;
2725}
2726
2727void
2728waiters (SV *self)
2729 CODE:
2730{
2731 AV *av = (AV *)SvRV (self);
2732
2733 if (GIMME_V == G_SCALAR)
2734 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0])));
2735 else
2736 {
2737 int i;
2738 EXTEND (SP, AvFILLp (av) + 1 - 1);
2739 for (i = 1; i <= AvFILLp (av); ++i)
2740 PUSHs (newSVsv (AvARRAY (av)[i]));
2741 }
2742}
2743

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