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Comparing Coro/Coro/State.xs (file contents):
Revision 1.152 by root, Thu Sep 20 12:02:25 2007 UTC vs.
Revision 1.271 by root, Fri Nov 14 07:35:32 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2 2
3#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
4 5
5#include "EXTERN.h" 6#include "EXTERN.h"
6#include "perl.h" 7#include "perl.h"
7#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
8 10
9#include "patchlevel.h" 11#include "patchlevel.h"
10 12
11#include <stdio.h> 13#include <stdio.h>
12#include <errno.h> 14#include <errno.h>
13#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
14 25
15#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
16# include <unistd.h> 27# include <unistd.h>
17# include <sys/mman.h> 28# include <sys/mman.h>
18# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
35# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
36#endif 47#endif
37 48
38#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
39# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
40# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
41#else
42# define REGISTER_STACK(cctx,start,end)
43#endif 51#endif
44 52
45/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
46#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
47 55
48#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
49 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
50 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
51 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
70# ifndef IS_PADCONST 78# ifndef IS_PADCONST
71# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
72# endif 80# endif
73#endif 81#endif
74 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
75/* 5.8.7 */ 101/* 5.8.7 */
76#ifndef SvRV_set 102#ifndef SvRV_set
77# define SvRV_set(s,v) SvRV(s) = (v) 103# define SvRV_set(s,v) SvRV(s) = (v)
78#endif 104#endif
79 105
… …
88/* prefer perl internal functions over our own? */ 114/* prefer perl internal functions over our own? */
89#ifndef CORO_PREFER_PERL_FUNCTIONS 115#ifndef CORO_PREFER_PERL_FUNCTIONS
90# define CORO_PREFER_PERL_FUNCTIONS 0 116# define CORO_PREFER_PERL_FUNCTIONS 0
91#endif 117#endif
92 118
93/* The next macro should declare a variable stacklevel that contains and approximation 119/* The next macros try to return the current stack pointer, in an as
94 * to the current C stack pointer. Its property is that it changes with each call 120 * portable way as possible. */
95 * and should be unique. */ 121#if __GNUC__ >= 4
96#define dSTACKLEVEL int stacklevel 122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
97#define STACKLEVEL ((void *)&stacklevel) 123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
98 126
99#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
100 128
101#if __GNUC__ >= 3 129#if __GNUC__ >= 3
102# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
103# define BARRIER __asm__ __volatile__ ("" : : : "memory") 131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
104#else 133#else
105# define attribute(x) 134# define attribute(x)
106# define BARRIER 135# define expect(expr,value) (expr)
136# define INLINE static
107#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
108 141
109#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
110 143
111#include "CoroAPI.h" 144#include "CoroAPI.h"
112 145
113#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
147
114static perl_mutex coro_mutex; 148static perl_mutex coro_lock;
115# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
116# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD
152static void *coro_thx;
153# endif
154
117#else 155#else
156
118# define LOCK (void)0 157# define LOCK (void)0
119# define UNLOCK (void)0 158# define UNLOCK (void)0
159
120#endif 160#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
121 166
122/* helper storage struct for Coro::AIO */ 167/* helper storage struct for Coro::AIO */
123struct io_state 168struct io_state
124{ 169{
170 AV *res;
125 int errorno; 171 int errorno;
126 I32 laststype; 172 I32 laststype; /* U16 in 5.10.0 */
127 int laststatval; 173 int laststatval;
128 Stat_t statcache; 174 Stat_t statcache;
129}; 175};
130 176
177static double (*nvtime)(); /* so why doesn't it take void? */
178
179static U32 cctx_gen;
131static size_t coro_stacksize = CORO_STACKSIZE; 180static size_t cctx_stacksize = CORO_STACKSIZE;
132static struct CoroAPI coroapi; 181static struct CoroAPI coroapi;
133static AV *main_mainstack; /* used to differentiate between $main and others */ 182static AV *main_mainstack; /* used to differentiate between $main and others */
134static JMPENV *main_top_env; 183static JMPENV *main_top_env;
135static HV *coro_state_stash, *coro_stash; 184static HV *coro_state_stash, *coro_stash;
136static SV *coro_mortal; /* will be freed after next transfer */ 185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187
188struct transfer_args
189{
190 struct coro *prev, *next;
191};
192
193static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook;
196static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */
198
199/* async_pool helper stuff */
200static SV *sv_pool_rss;
201static SV *sv_pool_size;
202static AV *av_async_pool;
203
204/* Coro::AnyEvent */
205static SV *sv_activity;
137 206
138static struct coro_cctx *cctx_first; 207static struct coro_cctx *cctx_first;
139static int cctx_count, cctx_idle; 208static int cctx_count, cctx_idle;
209
210enum {
211 CC_MAPPED = 0x01,
212 CC_NOREUSE = 0x02, /* throw this away after tracing */
213 CC_TRACE = 0x04,
214 CC_TRACE_SUB = 0x08, /* trace sub calls */
215 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217};
140 218
141/* this is a structure representing a c-level coroutine */ 219/* this is a structure representing a c-level coroutine */
142typedef struct coro_cctx { 220typedef struct coro_cctx {
143 struct coro_cctx *next; 221 struct coro_cctx *next;
144 222
… …
150 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 228 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
151 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 229 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
152 JMPENV *top_env; 230 JMPENV *top_env;
153 coro_context cctx; 231 coro_context cctx;
154 232
233 U32 gen;
155#if CORO_USE_VALGRIND 234#if CORO_USE_VALGRIND
156 int valgrind_id; 235 int valgrind_id;
157#endif 236#endif
158 char inuse, mapped; 237 unsigned char flags;
159} coro_cctx; 238} coro_cctx;
160 239
161enum { 240enum {
162 CF_RUNNING = 0x0001, /* coroutine is running */ 241 CF_RUNNING = 0x0001, /* coroutine is running */
163 CF_READY = 0x0002, /* coroutine is ready */ 242 CF_READY = 0x0002, /* coroutine is ready */
164 CF_NEW = 0x0004, /* has never been switched to */ 243 CF_NEW = 0x0004, /* has never been switched to */
165 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166}; 245};
167 246
247/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct {
249 SV *defsv;
250 AV *defav;
251 SV *errsv;
252 SV *irsgv;
253#define VAR(name,type) type name;
254# include "state.h"
255#undef VAR
256} perl_slots;
257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259
168/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
169struct coro { 261struct coro {
170 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the c coroutine allocated to this perl coroutine, if any */
171 coro_cctx *cctx; 263 coro_cctx *cctx;
172 264
265 /* process data */
266 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */
268
173 /* data associated with this coroutine (initial args) */ 269 AV *args; /* data associated with this coroutine (initial args) */
174 AV *args; 270 int refcnt; /* coroutines are refcounted, yes */
175 int refcnt;
176 int save; /* CORO_SAVE flags */
177 int flags; /* CF_ flags */ 271 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */
178 273
179 /* optionally saved, might be zero */ 274 /* statistics */
180 AV *defav; /* @_ */ 275 int usecount; /* number of transfers to this coro */
181 SV *defsv; /* $_ */
182 SV *errsv; /* $@ */
183 GV *deffh; /* default filehandle */
184 SV *irssv; /* $/ */
185 SV *irssv_sv; /* real $/ cache */
186
187#define VAR(name,type) type name;
188# include "state.h"
189#undef VAR
190 276
191 /* coro process data */ 277 /* coro process data */
192 int prio; 278 int prio;
279 SV *throw; /* exception to be thrown */
280
281 /* async_pool */
282 SV *saved_deffh;
193 283
194 /* linked list */ 284 /* linked list */
195 struct coro *next, *prev; 285 struct coro *next, *prev;
196 HV *hv; /* the perl hash associated with this coro, if any */
197}; 286};
198 287
199typedef struct coro *Coro__State; 288typedef struct coro *Coro__State;
200typedef struct coro *Coro__State_or_hashref; 289typedef struct coro *Coro__State_or_hashref;
201 290
… …
208#define PRIO_IDLE -3 297#define PRIO_IDLE -3
209#define PRIO_MIN -4 298#define PRIO_MIN -4
210 299
211/* for Coro.pm */ 300/* for Coro.pm */
212static SV *coro_current; 301static SV *coro_current;
302static SV *coro_readyhook;
213static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
214static int coro_nready;
215static struct coro *first; 304static struct coro *coro_first;
305#define coro_nready coroapi.nready
216 306
217/** lowlevel stuff **********************************************************/ 307/** lowlevel stuff **********************************************************/
308
309static SV *
310coro_get_sv (pTHX_ const char *name, int create)
311{
312#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_sv (name, create);
315#endif
316 return get_sv (name, create);
317}
318
319static AV *
320coro_get_av (pTHX_ const char *name, int create)
321{
322#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_av (name, create);
325#endif
326 return get_av (name, create);
327}
328
329static HV *
330coro_get_hv (pTHX_ const char *name, int create)
331{
332#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create);
335#endif
336 return get_hv (name, create);
337}
218 338
219static AV * 339static AV *
220coro_clone_padlist (pTHX_ CV *cv) 340coro_clone_padlist (pTHX_ CV *cv)
221{ 341{
222 AV *padlist = CvPADLIST (cv); 342 AV *padlist = CvPADLIST (cv);
223 AV *newpadlist, *newpad; 343 AV *newpadlist, *newpad;
224 344
225 newpadlist = newAV (); 345 newpadlist = newAV ();
226 AvREAL_off (newpadlist); 346 AvREAL_off (newpadlist);
227#if PERL_VERSION_ATLEAST (5,9,0) 347#if PERL_VERSION_ATLEAST (5,10,0)
228 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
229#else 349#else
230 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
231#endif 351#endif
232 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
233 --AvFILLp (padlist); 353 --AvFILLp (padlist);
234 354
235 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
236 av_store (newpadlist, 1, (SV *)newpad); 356 av_store (newpadlist, 1, (SV *)newpad);
237 357
238 return newpadlist; 358 return newpadlist;
239} 359}
240 360
… …
270 390
271 /* casting is fun. */ 391 /* casting is fun. */
272 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
273 free_padlist (aTHX_ padlist); 393 free_padlist (aTHX_ padlist);
274 394
275 SvREFCNT_dec (av); 395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
276 396
277 return 0; 397 return 0;
278} 398}
279 399
280#define PERL_MAGIC_coro PERL_MAGIC_ext 400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
281 402
282static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 403static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0,
405 coro_cv_free
406};
283 407
284#define CORO_MAGIC(cv) \ 408#define CORO_MAGIC(sv, type) \
285 SvMAGIC (cv) \ 409 SvMAGIC (sv) \
286 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 410 ? SvMAGIC (sv)->mg_type == type \
287 ? SvMAGIC (cv) \ 411 ? SvMAGIC (sv) \
288 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 412 : mg_find (sv, type) \
289 : 0 413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
290 443
291/* the next two functions merely cache the padlists */ 444/* the next two functions merely cache the padlists */
292static void 445static void
293get_padlist (pTHX_ CV *cv) 446get_padlist (pTHX_ CV *cv)
294{ 447{
295 MAGIC *mg = CORO_MAGIC (cv); 448 MAGIC *mg = CORO_MAGIC_cv (cv);
296 AV *av; 449 AV *av;
297 450
298 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
299 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
300 else 453 else
301 { 454 {
302#if CORO_PREFER_PERL_FUNCTIONS 455#if CORO_PREFER_PERL_FUNCTIONS
303 /* this is probably cleaner, but also slower? */ 456 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */
304 CV *cp = Perl_cv_clone (cv); 458 CV *cp = Perl_cv_clone (cv);
305 CvPADLIST (cv) = CvPADLIST (cp); 459 CvPADLIST (cv) = CvPADLIST (cp);
306 CvPADLIST (cp) = 0; 460 CvPADLIST (cp) = 0;
307 SvREFCNT_dec (cp); 461 SvREFCNT_dec (cp);
308#else 462#else
… …
312} 466}
313 467
314static void 468static void
315put_padlist (pTHX_ CV *cv) 469put_padlist (pTHX_ CV *cv)
316{ 470{
317 MAGIC *mg = CORO_MAGIC (cv); 471 MAGIC *mg = CORO_MAGIC_cv (cv);
318 AV *av; 472 AV *av;
319 473
320 if (!mg) 474 if (expect_false (!mg))
321 { 475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
322 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
323 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
324 mg->mg_virtual = &vtbl_coro;
325 mg->mg_obj = (SV *)newAV ();
326 }
327 476
328 av = (AV *)mg->mg_obj; 477 av = (AV *)mg->mg_obj;
329 478
330 if (AvFILLp (av) >= AvMAX (av)) 479 if (expect_false (AvFILLp (av) >= AvMAX (av)))
331 av_extend (av, AvMAX (av) + 1); 480 av_extend (av, AvMAX (av) + 1);
332 481
333 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
334} 483}
335 484
336/** load & save, init *******************************************************/ 485/** load & save, init *******************************************************/
337
338#define SB do {
339#define SE } while (0)
340
341#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
342 486
343static void 487static void
344load_perl (pTHX_ Coro__State c) 488load_perl (pTHX_ Coro__State c)
345{ 489{
490 perl_slots *slot = c->slot;
491 c->slot = 0;
492
493 PL_mainstack = c->mainstack;
494
495 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv;
499
346#define VAR(name,type) PL_ ## name = c->name; 500 #define VAR(name,type) PL_ ## name = slot->name;
347# include "state.h" 501 # include "state.h"
348#undef VAR 502 #undef VAR
349
350 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
351 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
352 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
353 if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
354
355 if (c->irssv)
356 {
357 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
358 {
359 SvREFCNT_dec (c->irssv);
360 c->irssv = 0;
361 }
362 else
363 {
364 REPLACE_SV (PL_rs, c->irssv);
365 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
366 sv_setsv (c->irssv_sv, PL_rs);
367 }
368 }
369 503
370 { 504 {
371 dSP; 505 dSP;
506
372 CV *cv; 507 CV *cv;
373 508
374 /* now do the ugly restore mess */ 509 /* now do the ugly restore mess */
375 while ((cv = (CV *)POPs)) 510 while (expect_true (cv = (CV *)POPs))
376 { 511 {
377 put_padlist (aTHX_ cv); /* mark this padlist as available */ 512 put_padlist (aTHX_ cv); /* mark this padlist as available */
378 CvDEPTH (cv) = PTR2IV (POPs); 513 CvDEPTH (cv) = PTR2IV (POPs);
379 CvPADLIST (cv) = (AV *)POPs; 514 CvPADLIST (cv) = (AV *)POPs;
380 } 515 }
… …
395 /* 530 /*
396 * the worst thing you can imagine happens first - we have to save 531 * the worst thing you can imagine happens first - we have to save
397 * (and reinitialize) all cv's in the whole callchain :( 532 * (and reinitialize) all cv's in the whole callchain :(
398 */ 533 */
399 534
400 EXTEND (SP, 3 + 1);
401 PUSHs (Nullsv); 535 XPUSHs (Nullsv);
402 /* this loop was inspired by pp_caller */ 536 /* this loop was inspired by pp_caller */
403 for (;;) 537 for (;;)
404 { 538 {
405 while (cxix >= 0) 539 while (expect_true (cxix >= 0))
406 { 540 {
407 PERL_CONTEXT *cx = &ccstk[cxix--]; 541 PERL_CONTEXT *cx = &ccstk[cxix--];
408 542
409 if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT) 543 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
410 { 544 {
411 CV *cv = cx->blk_sub.cv; 545 CV *cv = cx->blk_sub.cv;
412 546
413 if (CvDEPTH (cv)) 547 if (expect_true (CvDEPTH (cv)))
414 { 548 {
415 EXTEND (SP, 3); 549 EXTEND (SP, 3);
416 PUSHs ((SV *)CvPADLIST (cv)); 550 PUSHs ((SV *)CvPADLIST (cv));
417 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 551 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
418 PUSHs ((SV *)cv); 552 PUSHs ((SV *)cv);
419 553
420 CvDEPTH (cv) = 0; 554 CvDEPTH (cv) = 0;
421 get_padlist (aTHX_ cv); 555 get_padlist (aTHX_ cv);
422 } 556 }
423 } 557 }
424 } 558 }
425 559
426 if (top_si->si_type == PERLSI_MAIN) 560 if (expect_true (top_si->si_type == PERLSI_MAIN))
427 break; 561 break;
428 562
429 top_si = top_si->si_prev; 563 top_si = top_si->si_prev;
430 ccstk = top_si->si_cxstack; 564 ccstk = top_si->si_cxstack;
431 cxix = top_si->si_cxix; 565 cxix = top_si->si_cxix;
432 } 566 }
433 567
434 PUTBACK; 568 PUTBACK;
435 } 569 }
436 570
437 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 571 /* allocate some space on the context stack for our purposes */
438 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 572 /* we manually unroll here, as usually 2 slots is enough */
439 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 573 if (SLOT_COUNT >= 1) CXINC;
440 c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0; 574 if (SLOT_COUNT >= 2) CXINC;
441 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 575 if (SLOT_COUNT >= 3) CXINC;
576 {
577 int i;
578 for (i = 3; i < SLOT_COUNT; ++i)
579 CXINC;
580 }
581 cxstack_ix -= SLOT_COUNT; /* undo allocation */
442 582
583 c->mainstack = PL_mainstack;
584
585 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587
588 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV;
590 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv);
592
443#define VAR(name,type)c->name = PL_ ## name; 593 #define VAR(name,type) slot->name = PL_ ## name;
444# include "state.h" 594 # include "state.h"
445#undef VAR 595 #undef VAR
596 }
446} 597}
447 598
448/* 599/*
449 * allocate various perl stacks. This is an exact copy 600 * allocate various perl stacks. This is an exact copy
450 * of perl.c:init_stacks, except that it uses less memory 601 * of perl.c:init_stacks, except that it uses less memory
… …
455# define coro_init_stacks init_stacks 606# define coro_init_stacks init_stacks
456#else 607#else
457static void 608static void
458coro_init_stacks (pTHX) 609coro_init_stacks (pTHX)
459{ 610{
460 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 611 PL_curstackinfo = new_stackinfo(32, 8);
461 PL_curstackinfo->si_type = PERLSI_MAIN; 612 PL_curstackinfo->si_type = PERLSI_MAIN;
462 PL_curstack = PL_curstackinfo->si_stack; 613 PL_curstack = PL_curstackinfo->si_stack;
463 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 614 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
464 615
465 PL_stack_base = AvARRAY(PL_curstack); 616 PL_stack_base = AvARRAY(PL_curstack);
466 PL_stack_sp = PL_stack_base; 617 PL_stack_sp = PL_stack_base;
467 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 618 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
468 619
469 New(50,PL_tmps_stack,128,SV*); 620 New(50,PL_tmps_stack,32,SV*);
470 PL_tmps_floor = -1; 621 PL_tmps_floor = -1;
471 PL_tmps_ix = -1; 622 PL_tmps_ix = -1;
472 PL_tmps_max = 128; 623 PL_tmps_max = 32;
473 624
474 New(54,PL_markstack,32,I32); 625 New(54,PL_markstack,16,I32);
475 PL_markstack_ptr = PL_markstack; 626 PL_markstack_ptr = PL_markstack;
476 PL_markstack_max = PL_markstack + 32; 627 PL_markstack_max = PL_markstack + 16;
477 628
478#ifdef SET_MARK_OFFSET 629#ifdef SET_MARK_OFFSET
479 SET_MARK_OFFSET; 630 SET_MARK_OFFSET;
480#endif 631#endif
481 632
482 New(54,PL_scopestack,32,I32); 633 New(54,PL_scopestack,8,I32);
483 PL_scopestack_ix = 0; 634 PL_scopestack_ix = 0;
484 PL_scopestack_max = 32; 635 PL_scopestack_max = 8;
485 636
486 New(54,PL_savestack,64,ANY); 637 New(54,PL_savestack,24,ANY);
487 PL_savestack_ix = 0; 638 PL_savestack_ix = 0;
488 PL_savestack_max = 64; 639 PL_savestack_max = 24;
489 640
490#if !PERL_VERSION_ATLEAST (5,9,0) 641#if !PERL_VERSION_ATLEAST (5,10,0)
491 New(54,PL_retstack,16,OP*); 642 New(54,PL_retstack,4,OP*);
492 PL_retstack_ix = 0; 643 PL_retstack_ix = 0;
493 PL_retstack_max = 16; 644 PL_retstack_max = 4;
494#endif 645#endif
495} 646}
496#endif 647#endif
497 648
498/* 649/*
499 * destroy the stacks, the callchain etc... 650 * destroy the stacks, the callchain etc...
500 */ 651 */
501static void 652static void
502coro_destroy_stacks (pTHX) 653coro_destruct_stacks (pTHX)
503{ 654{
504 if (!IN_DESTRUCT)
505 {
506 /* restore all saved variables and stuff */
507 LEAVE_SCOPE (0);
508 assert (PL_tmps_floor == -1);
509
510 /* free all temporaries */
511 FREETMPS;
512 assert (PL_tmps_ix == -1);
513
514 /* unwind all extra stacks */
515 POPSTACK_TO (PL_mainstack);
516
517 /* unwind main stack */
518 dounwind (-1);
519 }
520
521 while (PL_curstackinfo->si_next) 655 while (PL_curstackinfo->si_next)
522 PL_curstackinfo = PL_curstackinfo->si_next; 656 PL_curstackinfo = PL_curstackinfo->si_next;
523 657
524 while (PL_curstackinfo) 658 while (PL_curstackinfo)
525 { 659 {
… …
535 669
536 Safefree (PL_tmps_stack); 670 Safefree (PL_tmps_stack);
537 Safefree (PL_markstack); 671 Safefree (PL_markstack);
538 Safefree (PL_scopestack); 672 Safefree (PL_scopestack);
539 Safefree (PL_savestack); 673 Safefree (PL_savestack);
540#if !PERL_VERSION_ATLEAST (5,9,0) 674#if !PERL_VERSION_ATLEAST (5,10,0)
541 Safefree (PL_retstack); 675 Safefree (PL_retstack);
542#endif 676#endif
543} 677}
544 678
545static size_t 679static size_t
546coro_rss (struct coro *coro) 680coro_rss (pTHX_ struct coro *coro)
547{ 681{
548 size_t rss = sizeof (coro); 682 size_t rss = sizeof (*coro);
549 683
550 if (coro->mainstack) 684 if (coro->mainstack)
551 { 685 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING)
690 {
691 slot = &tmp_slot;
692
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR
696 }
697 else
698 slot = coro->slot;
699
700 if (slot)
701 {
552 rss += sizeof (coro->curstackinfo); 702 rss += sizeof (slot->curstackinfo);
553 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
554 rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
555
556 rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *); 704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
557
558 rss += coro->tmps_max * sizeof (SV *); 705 rss += slot->tmps_max * sizeof (SV *);
559
560 rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32); 706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
561
562 rss += coro->scopestack_max * sizeof (I32); 707 rss += slot->scopestack_max * sizeof (I32);
563
564 rss += coro->savestack_max * sizeof (ANY); 708 rss += slot->savestack_max * sizeof (ANY);
565 709
566#if !PERL_VERSION_ATLEAST (5,9,0) 710#if !PERL_VERSION_ATLEAST (5,10,0)
567 rss += coro->retstack_max * sizeof (OP *); 711 rss += slot->retstack_max * sizeof (OP *);
568#endif 712#endif
713 }
569 } 714 }
570 715
571 return rss; 716 return rss;
572} 717}
573 718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_slf calling us */
722#define SLF_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_slf */
724#define SLF_TAIL slf_tail (aTHX)
725
726INLINE void
727slf_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744}
745
574/** coroutine stack handling ************************************************/ 746/** coroutine stack handling ************************************************/
575 747
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
749static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
750static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
751
752/* apparently < 5.8.8 */
753#ifndef MgPV_nolen_const
754#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
755 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
756 (const char*)(mg)->mg_ptr)
757#endif
758
759/*
760 * This overrides the default magic get method of %SIG elements.
761 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
762 * and instead of tryign to save and restore the hash elements, we just provide
763 * readback here.
764 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
765 * not expecting this to actually change the hook. This is a potential problem
766 * when a schedule happens then, but we ignore this.
767 */
768static int
769coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
770{
771 const char *s = MgPV_nolen_const (mg);
772
773 if (*s == '_')
774 {
775 SV **svp = 0;
776
777 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
778 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
779
780 if (svp)
781 {
782 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
783 return 0;
784 }
785 }
786
787 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
788}
789
790static int
791coro_sigelem_clr (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 = 0;
806 SvREFCNT_dec (old);
807 return 0;
808 }
809 }
810
811 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
812}
813
814static int
815coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
816{
817 const char *s = MgPV_nolen_const (mg);
818
819 if (*s == '_')
820 {
821 SV **svp = 0;
822
823 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
824 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
825
826 if (svp)
827 {
828 SV *old = *svp;
829 *svp = newSVsv (sv);
830 SvREFCNT_dec (old);
831 return 0;
832 }
833 }
834
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836}
837
576static void 838static void
577setup_coro (pTHX_ struct coro *coro) 839coro_setup (pTHX_ struct coro *coro)
578{ 840{
579 /* 841 /*
580 * emulate part of the perl startup here. 842 * emulate part of the perl startup here.
581 */ 843 */
582 coro_init_stacks (aTHX); 844 coro_init_stacks (aTHX);
583 845
846 PL_runops = RUNOPS_DEFAULT;
584 PL_curcop = &PL_compiling; 847 PL_curcop = &PL_compiling;
585 PL_in_eval = EVAL_NULL; 848 PL_in_eval = EVAL_NULL;
586 PL_comppad = 0; 849 PL_comppad = 0;
587 PL_curpm = 0; 850 PL_curpm = 0;
851 PL_curpad = 0;
588 PL_localizing = 0; 852 PL_localizing = 0;
589 PL_dirty = 0; 853 PL_dirty = 0;
590 PL_restartop = 0; 854 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0;
857#endif
858
859 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
862
863 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
867 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
591 869
592 { 870 {
593 dSP; 871 dSP;
594 LOGOP myop; 872 UNOP myop;
595 873
596 SvREFCNT_dec (GvAV (PL_defgv));
597 GvAV (PL_defgv) = coro->args; coro->args = 0;
598
599 Zero (&myop, 1, LOGOP); 874 Zero (&myop, 1, UNOP);
600 myop.op_next = Nullop; 875 myop.op_next = Nullop;
601 myop.op_flags = OPf_WANT_VOID; 876 myop.op_flags = OPf_WANT_VOID;
602 877
603 PUSHMARK (SP); 878 PUSHMARK (SP);
604 XPUSHs (av_shift (GvAV (PL_defgv))); 879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
605 PUTBACK; 880 PUTBACK;
606 PL_op = (OP *)&myop; 881 PL_op = (OP *)&myop;
607 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
608 SPAGAIN; 883 SPAGAIN;
609 } 884 }
610 885
611 ENTER; /* necessary e.g. for dounwind */ 886 /* this newly created coroutine might be run on an existing cctx which most
887 * likely was suspended in set_stacklevel, called from pp_set_stacklevel,
888 * so we have to emulate entering pp_set_stacklevel here.
889 */
890 SLF_HEAD;
612} 891}
613 892
614static void 893static void
894coro_destruct (pTHX_ struct coro *coro)
895{
896 if (!IN_DESTRUCT)
897 {
898 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0);
900 assert (PL_tmps_floor == -1);
901
902 /* free all temporaries */
903 FREETMPS;
904 assert (PL_tmps_ix == -1);
905
906 /* unwind all extra stacks */
907 POPSTACK_TO (PL_mainstack);
908
909 /* unwind main stack */
910 dounwind (-1);
911 }
912
913 SvREFCNT_dec (GvSV (PL_defgv));
914 SvREFCNT_dec (GvAV (PL_defgv));
915 SvREFCNT_dec (GvSV (PL_errgv));
916 SvREFCNT_dec (PL_defoutgv);
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922
923 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw);
925
926 coro_destruct_stacks (aTHX);
927}
928
929INLINE void
615free_coro_mortal (pTHX) 930free_coro_mortal (pTHX)
616{ 931{
617 if (coro_mortal) 932 if (expect_true (coro_mortal))
618 { 933 {
619 SvREFCNT_dec (coro_mortal); 934 SvREFCNT_dec (coro_mortal);
620 coro_mortal = 0; 935 coro_mortal = 0;
621 } 936 }
937}
938
939static int
940runops_trace (pTHX)
941{
942 COP *oldcop = 0;
943 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 {
949 PERL_ASYNC_CHECK ();
950
951 if (cctx->flags & CC_TRACE_ALL)
952 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
954 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top;
957 AV *av = newAV (); /* return values */
958 SV **cb;
959 dSP;
960
961 GV *gv = CvGV (cx->blk_sub.cv);
962 SV *fullname = sv_2mortal (newSV (0));
963 if (isGV (gv))
964 gv_efullname3 (fullname, gv, 0);
965
966 bot = PL_stack_base + cx->blk_oldsp + 1;
967 top = cx->blk_gimme == G_ARRAY ? SP + 1
968 : cx->blk_gimme == G_SCALAR ? bot + 1
969 : bot;
970
971 av_extend (av, top - bot);
972 while (bot < top)
973 av_push (av, SvREFCNT_inc_NN (*bot++));
974
975 PL_runops = RUNOPS_DEFAULT;
976 ENTER;
977 SAVETMPS;
978 EXTEND (SP, 3);
979 PUSHMARK (SP);
980 PUSHs (&PL_sv_no);
981 PUSHs (fullname);
982 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
983 PUTBACK;
984 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
985 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
986 SPAGAIN;
987 FREETMPS;
988 LEAVE;
989 PL_runops = runops_trace;
990 }
991
992 if (oldcop != PL_curcop)
993 {
994 oldcop = PL_curcop;
995
996 if (PL_curcop != &PL_compiling)
997 {
998 SV **cb;
999
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
1001 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0));
1010
1011 if (isGV (gv))
1012 gv_efullname3 (fullname, gv, 0);
1013
1014 PL_runops = RUNOPS_DEFAULT;
1015 ENTER;
1016 SAVETMPS;
1017 EXTEND (SP, 3);
1018 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN;
1026 FREETMPS;
1027 LEAVE;
1028 PL_runops = runops_trace;
1029 }
1030
1031 oldcxix = cxstack_ix;
1032 }
1033
1034 if (cctx->flags & CC_TRACE_LINE)
1035 {
1036 dSP;
1037
1038 PL_runops = RUNOPS_DEFAULT;
1039 ENTER;
1040 SAVETMPS;
1041 EXTEND (SP, 3);
1042 PL_runops = RUNOPS_DEFAULT;
1043 PUSHMARK (SP);
1044 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1045 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1046 PUTBACK;
1047 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1048 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1049 SPAGAIN;
1050 FREETMPS;
1051 LEAVE;
1052 PL_runops = runops_trace;
1053 }
1054 }
1055 }
1056 }
1057 }
1058
1059 TAINT_NOT;
1060 return 0;
1061}
1062
1063static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
1065{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0;
622} 1068}
623 1069
624/* inject a fake call to Coro::State::_cctx_init into the execution */ 1070/* inject a fake call to Coro::State::_cctx_init into the execution */
625/* _cctx_init should be careful, as it could be called at almost any time */ 1071/* _cctx_init should be careful, as it could be called at almost any time */
626/* during execution of a perl program */ 1072/* during execution of a perl program */
1073/* also initialises PL_top_env */
627static void NOINLINE 1074static void NOINLINE
628prepare_cctx (pTHX_ coro_cctx *cctx) 1075cctx_prepare (pTHX_ coro_cctx *cctx)
629{ 1076{
630 dSP; 1077 dSP;
631 LOGOP myop; 1078 UNOP myop;
632 1079
1080 PL_top_env = &PL_start_env;
1081
1082 if (cctx->flags & CC_TRACE)
1083 PL_runops = runops_trace;
1084
633 Zero (&myop, 1, LOGOP); 1085 Zero (&myop, 1, UNOP);
634 myop.op_next = PL_op; 1086 myop.op_next = PL_op;
635 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
636 1088
637 PUSHMARK (SP); 1089 PUSHMARK (SP);
638 EXTEND (SP, 2); 1090 EXTEND (SP, 2);
639 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1091 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
640 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
641 PUTBACK; 1093 PUTBACK;
642 PL_op = (OP *)&myop; 1094 PL_op = (OP *)&myop;
643 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
644 SPAGAIN; 1096 SPAGAIN;
645} 1097}
646 1098
1099/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void
1101transfer_tail (pTHX)
1102{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118}
1119
647/* 1120/*
648 * this is a _very_ stripped down perl interpreter ;) 1121 * this is a _very_ stripped down perl interpreter ;)
649 */ 1122 */
650static void 1123static void
651coro_run (void *arg) 1124cctx_run (void *arg)
652{ 1125{
1126#ifdef USE_ITHREADS
1127# if CORO_PTHREAD
1128 PERL_SET_CONTEXT (coro_thx);
1129# endif
1130#endif
1131 {
653 dTHX; 1132 dTHX;
654 1133
655 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1134 /* we are the alternative tail to pp_set_stacklevel */
656 UNLOCK; 1135 /* so do the same things here */
1136 SLF_TAIL;
657 1137
658 PL_top_env = &PL_start_env; 1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next;
659 1140
660 /* inject a fake subroutine call to cctx_init */ 1141 /* inject a fake subroutine call to cctx_init */
661 prepare_cctx (aTHX_ (coro_cctx *)arg); 1142 cctx_prepare (aTHX_ (coro_cctx *)arg);
662 1143
1144 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX);
1146
663 /* somebody or something will hit me for both perl_run and PL_restartop */ 1147 /* somebody or something will hit me for both perl_run and PL_restartop */
664 PL_restartop = PL_op; 1148 PL_restartop = PL_op;
665 perl_run (PL_curinterp); 1149 perl_run (PL_curinterp);
666 1150
667 /* 1151 /*
668 * If perl-run returns we assume exit() was being called or the coro 1152 * If perl-run returns we assume exit() was being called or the coro
669 * fell off the end, which seems to be the only valid (non-bug) 1153 * fell off the end, which seems to be the only valid (non-bug)
670 * reason for perl_run to return. We try to exit by jumping to the 1154 * reason for perl_run to return. We try to exit by jumping to the
671 * bootstrap-time "top" top_env, as we cannot restore the "main" 1155 * bootstrap-time "top" top_env, as we cannot restore the "main"
672 * coroutine as Coro has no such concept 1156 * coroutine as Coro has no such concept
673 */ 1157 */
674 PL_top_env = main_top_env; 1158 PL_top_env = main_top_env;
675 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 }
676} 1161}
677 1162
678static coro_cctx * 1163static coro_cctx *
679cctx_new () 1164cctx_new ()
680{ 1165{
681 coro_cctx *cctx; 1166 coro_cctx *cctx;
1167
1168 ++cctx_count;
1169 New (0, cctx, 1, coro_cctx);
1170
1171 cctx->gen = cctx_gen;
1172 cctx->flags = 0;
1173 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1174
1175 return cctx;
1176}
1177
1178/* create a new cctx only suitable as source */
1179static coro_cctx *
1180cctx_new_empty ()
1181{
1182 coro_cctx *cctx = cctx_new ();
1183
1184 cctx->sptr = 0;
1185 coro_create (&cctx->cctx, 0, 0, 0, 0);
1186
1187 return cctx;
1188}
1189
1190/* create a new cctx suitable as destination/running a perl interpreter */
1191static coro_cctx *
1192cctx_new_run ()
1193{
1194 coro_cctx *cctx = cctx_new ();
682 void *stack_start; 1195 void *stack_start;
683 size_t stack_size; 1196 size_t stack_size;
684 1197
685 ++cctx_count;
686
687 Newz (0, cctx, 1, coro_cctx);
688
689#if HAVE_MMAP 1198#if HAVE_MMAP
690
691 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1199 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
692 /* mmap supposedly does allocate-on-write for us */ 1200 /* mmap supposedly does allocate-on-write for us */
693 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1201 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
694 1202
695 if (cctx->sptr != (void *)-1) 1203 if (cctx->sptr != (void *)-1)
696 { 1204 {
697# if CORO_STACKGUARD 1205 #if CORO_STACKGUARD
698 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1206 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
699# endif 1207 #endif
700 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1208 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
701 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1209 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
702 cctx->mapped = 1; 1210 cctx->flags |= CC_MAPPED;
703 } 1211 }
704 else 1212 else
705#endif 1213#endif
706 { 1214 {
707 cctx->ssize = coro_stacksize * (long)sizeof (long); 1215 cctx->ssize = cctx_stacksize * (long)sizeof (long);
708 New (0, cctx->sptr, coro_stacksize, long); 1216 New (0, cctx->sptr, cctx_stacksize, long);
709 1217
710 if (!cctx->sptr) 1218 if (!cctx->sptr)
711 { 1219 {
712 perror ("FATAL: unable to allocate stack for coroutine"); 1220 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
713 _exit (EXIT_FAILURE); 1221 _exit (EXIT_FAILURE);
714 } 1222 }
715 1223
716 stack_start = cctx->sptr; 1224 stack_start = cctx->sptr;
717 stack_size = cctx->ssize; 1225 stack_size = cctx->ssize;
718 } 1226 }
719 1227
720 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1228 #if CORO_USE_VALGRIND
1229 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1230 #endif
1231
721 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1232 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
722 1233
723 return cctx; 1234 return cctx;
724} 1235}
725 1236
726static void 1237static void
… …
728{ 1239{
729 if (!cctx) 1240 if (!cctx)
730 return; 1241 return;
731 1242
732 --cctx_count; 1243 --cctx_count;
1244 coro_destroy (&cctx->cctx);
733 1245
1246 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr)
1248 {
734#if CORO_USE_VALGRIND 1249 #if CORO_USE_VALGRIND
735 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1250 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
736#endif 1251 #endif
737 1252
738#if HAVE_MMAP 1253#if HAVE_MMAP
739 if (cctx->mapped) 1254 if (cctx->flags & CC_MAPPED)
740 munmap (cctx->sptr, cctx->ssize); 1255 munmap (cctx->sptr, cctx->ssize);
741 else 1256 else
742#endif 1257#endif
743 Safefree (cctx->sptr); 1258 Safefree (cctx->sptr);
1259 }
744 1260
745 Safefree (cctx); 1261 Safefree (cctx);
746} 1262}
1263
1264/* wether this cctx should be destructed */
1265#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
747 1266
748static coro_cctx * 1267static coro_cctx *
749cctx_get (pTHX) 1268cctx_get (pTHX)
750{ 1269{
751 while (cctx_first) 1270 while (expect_true (cctx_first))
752 { 1271 {
753 coro_cctx *cctx = cctx_first; 1272 coro_cctx *cctx = cctx_first;
754 cctx_first = cctx->next; 1273 cctx_first = cctx->next;
755 --cctx_idle; 1274 --cctx_idle;
756 1275
757 if (cctx->ssize >= coro_stacksize) 1276 if (expect_true (!CCTX_EXPIRED (cctx)))
758 return cctx; 1277 return cctx;
759 1278
760 cctx_destroy (cctx); 1279 cctx_destroy (cctx);
761 } 1280 }
762 1281
763 PL_op = PL_op->op_next;
764 return cctx_new (); 1282 return cctx_new_run ();
765} 1283}
766 1284
767static void 1285static void
768cctx_put (coro_cctx *cctx) 1286cctx_put (coro_cctx *cctx)
769{ 1287{
1288 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1289
770 /* free another cctx if overlimit */ 1290 /* free another cctx if overlimit */
771 if (cctx_idle >= MAX_IDLE_CCTX) 1291 if (expect_false (cctx_idle >= cctx_max_idle))
772 { 1292 {
773 coro_cctx *first = cctx_first; 1293 coro_cctx *first = cctx_first;
774 cctx_first = first->next; 1294 cctx_first = first->next;
775 --cctx_idle; 1295 --cctx_idle;
776 1296
777 assert (!first->inuse);
778 cctx_destroy (first); 1297 cctx_destroy (first);
779 } 1298 }
780 1299
781 ++cctx_idle; 1300 ++cctx_idle;
782 cctx->next = cctx_first; 1301 cctx->next = cctx_first;
783 cctx_first = cctx; 1302 cctx_first = cctx;
784} 1303}
785 1304
786/** coroutine switching *****************************************************/ 1305/** coroutine switching *****************************************************/
787 1306
788/* never call directly, always through the coro_state_transfer global variable */ 1307static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{
1310 if (expect_true (prev != next))
1311 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1314
1315 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1317
1318 if (expect_false (next->flags & CF_DESTROYED))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1320
1321#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1324#endif
1325 }
1326}
1327
1328/* always use the TRANSFER macro */
789static void NOINLINE 1329static void NOINLINE
790transfer (pTHX_ struct coro *prev, struct coro *next) 1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
791{ 1331{
792 dSTACKLEVEL; 1332 dSTACKLEVEL;
793 1333
794 /* sometimes transfer is only called to set idle_sp */ 1334 /* sometimes transfer is only called to set idle_sp */
795 if (!next) 1335 if (expect_false (!next))
796 { 1336 {
797 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1337 ((coro_cctx *)prev)->idle_sp = stacklevel;
798 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
799 } 1339 }
800 else if (prev != next) 1340 else if (expect_true (prev != next))
801 { 1341 {
802 coro_cctx *prev__cctx; 1342 coro_cctx *prev__cctx;
803 1343
804 if (prev->flags & CF_NEW) 1344 if (expect_false (prev->flags & CF_NEW))
805 { 1345 {
806 /* create a new empty context */ 1346 /* create a new empty/source context */
807 Newz (0, prev->cctx, 1, coro_cctx); 1347 prev->cctx = cctx_new_empty ();
808 prev->cctx->inuse = 1;
809 prev->flags &= ~CF_NEW; 1348 prev->flags &= ~CF_NEW;
810 prev->flags |= CF_RUNNING; 1349 prev->flags |= CF_RUNNING;
811 } 1350 }
812 1351
813 /*TODO: must not croak here */
814 if (!prev->flags & CF_RUNNING)
815 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
816
817 if (next->flags & CF_RUNNING)
818 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
819
820 if (next->flags & CF_DESTROYED)
821 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
822
823 prev->flags &= ~CF_RUNNING; 1352 prev->flags &= ~CF_RUNNING;
824 next->flags |= CF_RUNNING; 1353 next->flags |= CF_RUNNING;
825 1354
826 LOCK; 1355 LOCK;
827 1356
1357 /* first get rid of the old state */
1358 save_perl (aTHX_ prev);
1359
828 if (next->flags & CF_NEW) 1360 if (expect_false (next->flags & CF_NEW))
829 { 1361 {
830 /* need to start coroutine */ 1362 /* need to start coroutine */
831 next->flags &= ~CF_NEW; 1363 next->flags &= ~CF_NEW;
832 /* first get rid of the old state */
833 save_perl (aTHX_ prev);
834 /* setup coroutine call */ 1364 /* setup coroutine call */
835 setup_coro (aTHX_ next); 1365 coro_setup (aTHX_ next);
836 /* need a new stack */
837 assert (!next->cctx);
838 } 1366 }
839 else 1367 else
1368 load_perl (aTHX_ next);
1369
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */
1373 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel
1375 && !(prev__cctx->flags & CC_TRACE)
1376 && !force_cctx
1377 ))
840 { 1378 {
841 /* coroutine already started */ 1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
842 save_perl (aTHX_ prev); 1380 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
843 load_perl (aTHX_ next); 1381
1382 prev->cctx = 0;
1383
1384 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1385 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1387 if (!next->cctx)
1388 next->cctx = cctx_get (aTHX);
1389
1390 cctx_put (prev__cctx);
844 } 1391 }
845 1392
846 prev__cctx = prev->cctx; 1393 ++next->usecount;
847 1394
848 /* possibly "free" the cctx */
849 if (prev__cctx->idle_sp == STACKLEVEL)
850 {
851 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
852 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
853
854 prev->cctx = 0;
855
856 cctx_put (prev__cctx);
857 prev__cctx->inuse = 0;
858 }
859
860 if (!next->cctx) 1395 if (expect_true (!next->cctx))
861 {
862 next->cctx = cctx_get (aTHX); 1396 next->cctx = cctx_get (aTHX);
863 assert (!next->cctx->inuse);
864 next->cctx->inuse = 1;
865 }
866 1397
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1399 transfer_next = next;
1400
867 if (prev__cctx != next->cctx) 1401 if (expect_false (prev__cctx != next->cctx))
868 { 1402 {
869 prev__cctx->top_env = PL_top_env; 1403 prev__cctx->top_env = PL_top_env;
870 PL_top_env = next->cctx->top_env; 1404 PL_top_env = next->cctx->top_env;
871 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
872 } 1406 }
873 1407
874 free_coro_mortal (aTHX); 1408 transfer_tail (aTHX);
875 UNLOCK;
876 } 1409 }
877} 1410}
878 1411
879struct transfer_args 1412#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
880{
881 struct coro *prev, *next;
882};
883
884#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1413#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
885 1414
886/** high level stuff ********************************************************/ 1415/** high level stuff ********************************************************/
887 1416
888static int 1417static int
889coro_state_destroy (pTHX_ struct coro *coro) 1418coro_state_destroy (pTHX_ struct coro *coro)
… …
906 1435
907 if (coro->mainstack && coro->mainstack != main_mainstack) 1436 if (coro->mainstack && coro->mainstack != main_mainstack)
908 { 1437 {
909 struct coro temp; 1438 struct coro temp;
910 1439
911 assert (!(coro->flags & CF_RUNNING));
912
913 Zero (&temp, 1, struct coro);
914 temp.save = CORO_SAVE_ALL;
915
916 if (coro->flags & CF_RUNNING) 1440 if (coro->flags & CF_RUNNING)
917 croak ("FATAL: tried to destroy currently running coroutine"); 1441 croak ("FATAL: tried to destroy currently running coroutine");
918 1442
919 save_perl (aTHX_ &temp); 1443 save_perl (aTHX_ &temp);
920 load_perl (aTHX_ coro); 1444 load_perl (aTHX_ coro);
921 1445
922 coro_destroy_stacks (aTHX); 1446 coro_destruct (aTHX_ coro);
923 1447
924 load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */ 1448 load_perl (aTHX_ &temp);
925 1449
926 coro->mainstack = 0; 1450 coro->slot = 0;
927 } 1451 }
928 1452
929 cctx_destroy (coro->cctx); 1453 cctx_destroy (coro->cctx);
930 SvREFCNT_dec (coro->args); 1454 SvREFCNT_dec (coro->args);
931 1455
932 if (coro->next) coro->next->prev = coro->prev; 1456 if (coro->next) coro->next->prev = coro->prev;
933 if (coro->prev) coro->prev->next = coro->next; 1457 if (coro->prev) coro->prev->next = coro->next;
934 if (coro == first) first = coro->next; 1458 if (coro == coro_first) coro_first = coro->next;
935 1459
936 return 1; 1460 return 1;
937} 1461}
938 1462
939static int 1463static int
… …
972#else 1496#else
973# define MGf_DUP 0 1497# define MGf_DUP 0
974#endif 1498#endif
975}; 1499};
976 1500
977static struct coro *
978SvSTATE_ (pTHX_ SV *coro)
979{
980 HV *stash;
981 MAGIC *mg;
982
983 if (SvROK (coro))
984 coro = SvRV (coro);
985
986 stash = SvSTASH (coro);
987 if (stash != coro_stash && stash != coro_state_stash)
988 {
989 /* very slow, but rare, check */
990 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
991 croak ("Coro::State object required");
992 }
993
994 mg = CORO_MAGIC (coro);
995 return (struct coro *)mg->mg_ptr;
996}
997
998#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
999
1000static void 1501static void
1001prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
1002{ 1503{
1003 ta->prev = SvSTATE (prev_sv); 1504 ta->prev = SvSTATE (prev_sv);
1004 ta->next = SvSTATE (next_sv); 1505 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta);
1005} 1507}
1006 1508
1007static void 1509static void
1008api_transfer (SV *prev_sv, SV *next_sv) 1510api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1009{ 1511{
1010 dTHX;
1011 struct transfer_args ta; 1512 struct transfer_args ta;
1012 1513
1013 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1514 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1014 TRANSFER (ta); 1515 TRANSFER (ta, 1);
1015}
1016
1017static int
1018api_save (SV *coro_sv, int new_save)
1019{
1020 dTHX;
1021 struct coro *coro = SvSTATE (coro_sv);
1022 int old_save = coro->save;
1023
1024 if (new_save >= 0)
1025 coro->save = new_save;
1026
1027 return old_save;
1028} 1516}
1029 1517
1030/** Coro ********************************************************************/ 1518/** Coro ********************************************************************/
1031 1519
1032static void 1520static void
… …
1034{ 1522{
1035 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1523 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1036} 1524}
1037 1525
1038static SV * 1526static SV *
1039coro_deq (pTHX_ int min_prio) 1527coro_deq (pTHX)
1040{ 1528{
1041 int prio = PRIO_MAX - PRIO_MIN; 1529 int prio;
1042 1530
1043 min_prio -= PRIO_MIN;
1044 if (min_prio < 0)
1045 min_prio = 0;
1046
1047 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1531 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1048 if (AvFILLp (coro_ready [prio]) >= 0) 1532 if (AvFILLp (coro_ready [prio]) >= 0)
1049 return av_shift (coro_ready [prio]); 1533 return av_shift (coro_ready [prio]);
1050 1534
1051 return 0; 1535 return 0;
1052} 1536}
1053 1537
1054static int 1538static int
1055api_ready (SV *coro_sv) 1539api_ready (pTHX_ SV *coro_sv)
1056{ 1540{
1057 dTHX;
1058 struct coro *coro; 1541 struct coro *coro;
1542 SV *sv_hook;
1543 void (*xs_hook)(void);
1059 1544
1060 if (SvROK (coro_sv)) 1545 if (SvROK (coro_sv))
1061 coro_sv = SvRV (coro_sv); 1546 coro_sv = SvRV (coro_sv);
1062 1547
1063 coro = SvSTATE (coro_sv); 1548 coro = SvSTATE (coro_sv);
… …
1066 return 0; 1551 return 0;
1067 1552
1068 coro->flags |= CF_READY; 1553 coro->flags |= CF_READY;
1069 1554
1070 LOCK; 1555 LOCK;
1556
1557 sv_hook = coro_nready ? 0 : coro_readyhook;
1558 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1559
1071 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1560 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1072 ++coro_nready; 1561 ++coro_nready;
1562
1073 UNLOCK; 1563 UNLOCK;
1564
1565 if (sv_hook)
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (sv_hook, G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 }
1580
1581 if (xs_hook)
1582 xs_hook ();
1074 1583
1075 return 1; 1584 return 1;
1076} 1585}
1077 1586
1078static int 1587static int
1079api_is_ready (SV *coro_sv) 1588api_is_ready (pTHX_ SV *coro_sv)
1080{ 1589{
1081 dTHX;
1082 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1590 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1083} 1591}
1084 1592
1085static void 1593INLINE void
1086prepare_schedule (pTHX_ struct transfer_args *ta) 1594prepare_schedule (pTHX_ struct transfer_args *ta)
1087{ 1595{
1088 SV *prev_sv, *next_sv; 1596 SV *prev_sv, *next_sv;
1089 1597
1090 for (;;) 1598 for (;;)
1091 { 1599 {
1092 LOCK; 1600 LOCK;
1093 next_sv = coro_deq (aTHX_ PRIO_MIN); 1601 next_sv = coro_deq (aTHX);
1094 1602
1095 /* nothing to schedule: call the idle handler */ 1603 /* nothing to schedule: call the idle handler */
1096 if (!next_sv) 1604 if (expect_false (!next_sv))
1097 { 1605 {
1098 dSP; 1606 dSP;
1099 UNLOCK; 1607 UNLOCK;
1100 1608
1101 ENTER; 1609 ENTER;
1102 SAVETMPS; 1610 SAVETMPS;
1103 1611
1104 PUSHMARK (SP); 1612 PUSHMARK (SP);
1105 PUTBACK; 1613 PUTBACK;
1106 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1614 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1615 SPAGAIN;
1107 1616
1108 FREETMPS; 1617 FREETMPS;
1109 LEAVE; 1618 LEAVE;
1110 continue; 1619 continue;
1111 } 1620 }
1112 1621
1113 ta->next = SvSTATE (next_sv); 1622 ta->next = SvSTATE (next_sv);
1114 1623
1115 /* cannot transfer to destroyed coros, skip and look for next */ 1624 /* cannot transfer to destroyed coros, skip and look for next */
1116 if (ta->next->flags & CF_DESTROYED) 1625 if (expect_false (ta->next->flags & CF_DESTROYED))
1117 { 1626 {
1118 UNLOCK; 1627 UNLOCK;
1119 SvREFCNT_dec (next_sv); 1628 SvREFCNT_dec (next_sv);
1120 /* coro_nready is already taken care of by destroy */ 1629 /* coro_nready has already been taken care of by destroy */
1121 continue; 1630 continue;
1122 } 1631 }
1123 1632
1124 --coro_nready; 1633 --coro_nready;
1125 UNLOCK; 1634 UNLOCK;
1126 break; 1635 break;
1127 } 1636 }
1128 1637
1129 /* free this only after the transfer */ 1638 /* free this only after the transfer */
1130 prev_sv = SvRV (coro_current); 1639 prev_sv = SvRV (coro_current);
1640 ta->prev = SvSTATE (prev_sv);
1641 TRANSFER_CHECK (*ta);
1642 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1643 ta->next->flags &= ~CF_READY;
1131 SvRV_set (coro_current, next_sv); 1644 SvRV_set (coro_current, next_sv);
1132 ta->prev = SvSTATE (prev_sv);
1133
1134 assert (ta->next->flags & CF_READY);
1135 ta->next->flags &= ~CF_READY;
1136 1645
1137 LOCK; 1646 LOCK;
1138 free_coro_mortal (aTHX); 1647 free_coro_mortal (aTHX);
1139 coro_mortal = prev_sv; 1648 coro_mortal = prev_sv;
1140 UNLOCK; 1649 UNLOCK;
1141} 1650}
1142 1651
1652INLINE void
1653prepare_cede (pTHX_ struct transfer_args *ta)
1654{
1655 api_ready (aTHX_ coro_current);
1656 prepare_schedule (aTHX_ ta);
1657}
1658
1143static void 1659static void
1144prepare_cede (pTHX_ struct transfer_args *ta) 1660prepare_cede_notself (pTHX_ struct transfer_args *ta)
1145{ 1661{
1146 api_ready (coro_current); 1662 SV *prev = SvRV (coro_current);
1663
1664 if (coro_nready)
1665 {
1666 prepare_schedule (aTHX_ ta);
1667 api_ready (aTHX_ prev);
1668 }
1669 else
1670 ta->prev = ta->next = SvSTATE (prev);
1671}
1672
1673static void
1674api_schedule (pTHX)
1675{
1676 struct transfer_args ta;
1677
1147 prepare_schedule (aTHX_ ta); 1678 prepare_schedule (aTHX_ &ta);
1679 TRANSFER (ta, 1);
1148} 1680}
1149 1681
1150static int 1682static int
1151prepare_cede_notself (pTHX_ struct transfer_args *ta) 1683api_cede (pTHX)
1152{ 1684{
1153 if (coro_nready) 1685 struct transfer_args ta;
1154 { 1686
1155 SV *prev = SvRV (coro_current);
1156 prepare_schedule (aTHX_ ta); 1687 prepare_cede (aTHX_ &ta);
1157 api_ready (prev); 1688
1689 if (expect_true (ta.prev != ta.next))
1690 {
1691 TRANSFER (ta, 1);
1158 return 1; 1692 return 1;
1159 } 1693 }
1160 else 1694 else
1161 return 0; 1695 return 0;
1162} 1696}
1163 1697
1164static void
1165api_schedule (void)
1166{
1167 dTHX;
1168 struct transfer_args ta;
1169
1170 prepare_schedule (aTHX_ &ta);
1171 TRANSFER (ta);
1172}
1173
1174static int 1698static int
1175api_cede (void) 1699api_cede_notself (pTHX)
1176{ 1700{
1177 dTHX; 1701 if (coro_nready)
1702 {
1178 struct transfer_args ta; 1703 struct transfer_args ta;
1179 1704
1180 prepare_cede (aTHX_ &ta); 1705 prepare_cede_notself (aTHX_ &ta);
1181
1182 if (ta.prev != ta.next)
1183 {
1184 TRANSFER (ta); 1706 TRANSFER (ta, 1);
1185 return 1; 1707 return 1;
1186 } 1708 }
1187 else 1709 else
1188 return 0; 1710 return 0;
1189} 1711}
1190 1712
1713static void
1714api_trace (pTHX_ SV *coro_sv, int flags)
1715{
1716 struct coro *coro = SvSTATE (coro_sv);
1717
1718 if (flags & CC_TRACE)
1719 {
1720 if (!coro->cctx)
1721 coro->cctx = cctx_new_run ();
1722 else if (!(coro->cctx->flags & CC_TRACE))
1723 croak ("cannot enable tracing on coroutine with custom stack");
1724
1725 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1726 }
1727 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1728 {
1729 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1730
1731 if (coro->flags & CF_RUNNING)
1732 PL_runops = RUNOPS_DEFAULT;
1733 else
1734 coro->slot->runops = RUNOPS_DEFAULT;
1735 }
1736}
1737
1738#if 0
1191static int 1739static int
1192api_cede_notself (void) 1740coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1193{ 1741{
1194 dTHX; 1742 AV *padlist;
1743 AV *av = (AV *)mg->mg_obj;
1744
1745 abort ();
1746
1747 return 0;
1748}
1749
1750static MGVTBL coro_gensub_vtbl = {
1751 0, 0, 0, 0,
1752 coro_gensub_free
1753};
1754#endif
1755
1756/*****************************************************************************/
1757/* PerlIO::cede */
1758
1759typedef struct
1760{
1761 PerlIOBuf base;
1762 NV next, every;
1763} PerlIOCede;
1764
1765static IV
1766PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1767{
1768 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1769
1770 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1771 self->next = nvtime () + self->every;
1772
1773 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1774}
1775
1776static SV *
1777PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1778{
1779 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1780
1781 return newSVnv (self->every);
1782}
1783
1784static IV
1785PerlIOCede_flush (pTHX_ PerlIO *f)
1786{
1787 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1788 double now = nvtime ();
1789
1790 if (now >= self->next)
1791 {
1792 api_cede (aTHX);
1793 self->next = now + self->every;
1794 }
1795
1796 return PerlIOBuf_flush (aTHX_ f);
1797}
1798
1799static PerlIO_funcs PerlIO_cede =
1800{
1801 sizeof(PerlIO_funcs),
1802 "cede",
1803 sizeof(PerlIOCede),
1804 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1805 PerlIOCede_pushed,
1806 PerlIOBuf_popped,
1807 PerlIOBuf_open,
1808 PerlIOBase_binmode,
1809 PerlIOCede_getarg,
1810 PerlIOBase_fileno,
1811 PerlIOBuf_dup,
1812 PerlIOBuf_read,
1813 PerlIOBuf_unread,
1814 PerlIOBuf_write,
1815 PerlIOBuf_seek,
1816 PerlIOBuf_tell,
1817 PerlIOBuf_close,
1818 PerlIOCede_flush,
1819 PerlIOBuf_fill,
1820 PerlIOBase_eof,
1821 PerlIOBase_error,
1822 PerlIOBase_clearerr,
1823 PerlIOBase_setlinebuf,
1824 PerlIOBuf_get_base,
1825 PerlIOBuf_bufsiz,
1826 PerlIOBuf_get_ptr,
1827 PerlIOBuf_get_cnt,
1828 PerlIOBuf_set_ptrcnt,
1829};
1830
1831/*****************************************************************************/
1832
1833static const CV *slf_cv; /* for quick consistency check */
1834
1835static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1836static SV *slf_arg0;
1837static SV *slf_arg1;
1838
1839/* this restores the stack in the case we patched the entersub, to */
1840/* recreate the stack frame as perl will on following calls */
1841/* since entersub cleared the stack */
1842static OP *
1843pp_restore (pTHX)
1844{
1845 dSP;
1846
1847 PUSHMARK (SP);
1848
1849 EXTEND (SP, 3);
1850 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1851 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1852 PUSHs ((SV *)CvGV (slf_cv));
1853
1854 RETURNOP (slf_restore.op_first);
1855}
1856
1857#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */
1858
1859enum {
1860 CORO_SLF_CUSTOM = 0,
1861 CORO_SLF_SET_STACKLEVEL = 1,
1862 CORO_SLF_TRANSFER = 2
1863};
1864
1865/* declare prototype */
1866XS(XS_Coro__State__set_stacklevel);
1867
1868/*
1869 * these not obviously related functions are all rolled into one
1870 * function to increase chances that they all will call transfer with the same
1871 * stack offset
1872 * SLF stands for "schedule-like-function".
1873 */
1874static OP *
1875pp_slf (pTHX)
1876{
1877 dSP;
1195 struct transfer_args ta; 1878 struct transfer_args ta;
1879 SV **arg = PL_stack_base + TOPMARK + 1;
1880 int items = SP - arg; /* args without function object */
1881 int ix = PL_op->op_private & OPpENTERSUB_SLF;
1882 struct CoroSLF *slf = 0;
1883 SV *gv = *sp;
1196 1884
1885 /* do a quick consistency check on the "function" object, and if it isn't */
1886 /* for us, divert to the real entersub */
1887 if (SvTYPE (gv) != SVt_PVGV || CvXSUB (GvCV (gv)) != XS_Coro__State__set_stacklevel)
1888 return PL_ppaddr[OP_ENTERSUB](aTHX);
1889
1890 /* pop args */
1891 SP = PL_stack_base + POPMARK;
1892
1893 if (!(PL_op->op_flags & OPf_STACKED))
1894 {
1895 /* ampersand-form of call, use @_ instead of stack */
1896 AV *av = GvAV (PL_defgv);
1897 arg = AvARRAY (av);
1898 items = AvFILLp (av) + 1;
1899 }
1900
1901 PUTBACK;
1902
1903 if (!ix)
1904 {
1905 slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr;
1906 ix = slf->prepare (aTHX_ arg, items);
1907 }
1908
1909 switch (ix)
1910 {
1911 case CORO_SLF_SET_STACKLEVEL:
1912 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1913 break;
1914
1915 case CORO_SLF_TRANSFER:
1916 if (items != 2)
1917 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1918
1919 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1920 break;
1921
1922 case CORO_SLF_SCHEDULE:
1923 prepare_schedule (aTHX_ &ta);
1924 break;
1925
1926 case CORO_SLF_CEDE:
1927 prepare_cede (aTHX_ &ta);
1928 break;
1929
1930 case CORO_SLF_CEDE_NOTSELF:
1197 if (prepare_cede_notself (aTHX_ &ta)) 1931 prepare_cede_notself (aTHX_ &ta);
1932 break;
1933
1934 default:
1935 abort ();
1198 { 1936 }
1937
1938 do
1199 TRANSFER (ta); 1939 TRANSFER (ta, 0);
1200 return 1; 1940 while (slf && slf->check (aTHX));
1201 }
1202 else
1203 return 0;
1204}
1205 1941
1942 SPAGAIN;
1943
1944 PUTBACK;
1945 SLF_TAIL;
1946 SPAGAIN;
1947 RETURN;
1948}
1949
1950static void
1951coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items)
1952{
1953 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));
1954
1955 assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
1956 slf_cv = cv;
1957
1958 /* we patch the op, and then re-run the whole call */
1959 /* we have to put the same argument on the stack for this to work */
1960 /* and this will be done by pp_restore */
1961 slf_restore.op_next = (OP *)&slf_restore;
1962 slf_restore.op_type = OP_NULL;
1963 slf_restore.op_ppaddr = pp_restore;
1964 slf_restore.op_first = PL_op;
1965
1966 slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1967 slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1968
1969 PL_op->op_ppaddr = pp_slf;
1970 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1971
1972 PL_op = (OP *)&slf_restore;
1973}
1974
1975static void
1976api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items)
1977{
1978 CvXSUBANY (cv).any_ptr = (void *)slf;
1979 coro_slf_patch (aTHX_ cv, CORO_SLF_CUSTOM, arg, items);
1980}
1981
1206MODULE = Coro::State PACKAGE = Coro::State 1982MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1207 1983
1208PROTOTYPES: DISABLE 1984PROTOTYPES: DISABLE
1209 1985
1210BOOT: 1986BOOT:
1211{ 1987{
1212#ifdef USE_ITHREADS 1988#ifdef USE_ITHREADS
1213 MUTEX_INIT (&coro_mutex); 1989 MUTEX_INIT (&coro_lock);
1990# if CORO_PTHREAD
1991 coro_thx = PERL_GET_CONTEXT;
1992# endif
1214#endif 1993#endif
1215 BOOT_PAGESIZE; 1994 BOOT_PAGESIZE;
1216 1995
1996 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1997 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1998
1999 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2000 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2001 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2002
2003 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2004 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2005 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2006
1217 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2007 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1218 2008
1219 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 2009 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1220 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); 2010 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1221 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1222 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1223 newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1224 newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF)); 2011 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1225 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 2012 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1226 2013
1227 main_mainstack = PL_mainstack; 2014 main_mainstack = PL_mainstack;
1228 main_top_env = PL_top_env; 2015 main_top_env = PL_top_env;
1229 2016
1230 while (main_top_env->je_prev) 2017 while (main_top_env->je_prev)
1231 main_top_env = main_top_env->je_prev; 2018 main_top_env = main_top_env->je_prev;
1232 2019
1233 coroapi.ver = CORO_API_VERSION; 2020 coroapi.ver = CORO_API_VERSION;
2021 coroapi.rev = CORO_API_REVISION;
1234 coroapi.transfer = api_transfer; 2022 coroapi.transfer = api_transfer;
2023 coroapi.execute_slf = api_execute_slf;
2024
2025 {
2026 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2027
2028 if (!svp) croak ("Time::HiRes is required");
2029 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2030
2031 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2032 }
1235 2033
1236 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2034 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1237} 2035}
1238 2036
1239SV * 2037SV *
1240new (char *klass, ...) 2038new (char *klass, ...)
1241 CODE: 2039 CODE:
1242{ 2040{
1243 struct coro *coro; 2041 struct coro *coro;
2042 MAGIC *mg;
1244 HV *hv; 2043 HV *hv;
1245 int i; 2044 int i;
1246 2045
1247 Newz (0, coro, 1, struct coro); 2046 Newz (0, coro, 1, struct coro);
1248 coro->args = newAV (); 2047 coro->args = newAV ();
1249 coro->save = CORO_SAVE_DEF;
1250 coro->flags = CF_NEW; 2048 coro->flags = CF_NEW;
1251 2049
1252 if (first) first->prev = coro; 2050 if (coro_first) coro_first->prev = coro;
1253 coro->next = first; 2051 coro->next = coro_first;
1254 first = coro; 2052 coro_first = coro;
1255 2053
1256 coro->hv = hv = newHV (); 2054 coro->hv = hv = newHV ();
1257 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2055 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2056 mg->mg_flags |= MGf_DUP;
1258 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2057 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1259 2058
2059 av_extend (coro->args, items - 1);
1260 for (i = 1; i < items; i++) 2060 for (i = 1; i < items; i++)
1261 av_push (coro->args, newSVsv (ST (i))); 2061 av_push (coro->args, newSVsv (ST (i)));
1262} 2062}
1263 OUTPUT: 2063 OUTPUT:
1264 RETVAL
1265
1266int
1267save (SV *coro, int new_save = -1)
1268 CODE:
1269 RETVAL = api_save (coro, new_save);
1270 OUTPUT:
1271 RETVAL
1272
1273int
1274save_also (SV *coro_sv, int save_also)
1275 CODE:
1276{
1277 struct coro *coro = SvSTATE (coro_sv);
1278 RETVAL = coro->save;
1279 coro->save |= save_also;
1280}
1281 OUTPUT:
1282 RETVAL 2064 RETVAL
1283 2065
1284void 2066void
1285_set_stacklevel (...) 2067_set_stacklevel (...)
1286 ALIAS: 2068 ALIAS:
2069 _set_stacklevel = CORO_SLF_SET_STACKLEVEL
1287 Coro::State::transfer = 1 2070 Coro::State::transfer = CORO_SLF_TRANSFER
1288 Coro::schedule = 2 2071 Coro::schedule = CORO_SLF_SCHEDULE
1289 Coro::cede = 3 2072 Coro::cede = CORO_SLF_CEDE
1290 Coro::cede_notself = 4 2073 Coro::cede_notself = CORO_SLF_CEDE_NOTSELF
1291 CODE: 2074 CODE:
1292{ 2075 coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
1293 struct transfer_args ta;
1294
1295 switch (ix)
1296 {
1297 case 0:
1298 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1299 ta.next = 0;
1300 break;
1301
1302 case 1:
1303 if (items != 2)
1304 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1305
1306 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1307 break;
1308
1309 case 2:
1310 prepare_schedule (aTHX_ &ta);
1311 break;
1312
1313 case 3:
1314 prepare_cede (aTHX_ &ta);
1315 break;
1316
1317 case 4:
1318 if (!prepare_cede_notself (aTHX_ &ta))
1319 XSRETURN_EMPTY;
1320
1321 break;
1322 }
1323
1324 BARRIER;
1325 TRANSFER (ta);
1326
1327 if (GIMME_V != G_VOID && ta.next != ta.prev)
1328 XSRETURN_YES;
1329}
1330 2076
1331bool 2077bool
1332_destroy (SV *coro_sv) 2078_destroy (SV *coro_sv)
1333 CODE: 2079 CODE:
1334 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2080 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1335 OUTPUT: 2081 OUTPUT:
1336 RETVAL 2082 RETVAL
1337 2083
1338void 2084void
1339_exit (code) 2085_exit (int code)
1340 int code
1341 PROTOTYPE: $ 2086 PROTOTYPE: $
1342 CODE: 2087 CODE:
1343 _exit (code); 2088 _exit (code);
1344 2089
1345int 2090int
1346cctx_stacksize (int new_stacksize = 0) 2091cctx_stacksize (int new_stacksize = 0)
1347 CODE: 2092 CODE:
1348 RETVAL = coro_stacksize; 2093 RETVAL = cctx_stacksize;
1349 if (new_stacksize) 2094 if (new_stacksize)
2095 {
1350 coro_stacksize = new_stacksize; 2096 cctx_stacksize = new_stacksize;
2097 ++cctx_gen;
2098 }
2099 OUTPUT:
2100 RETVAL
2101
2102int
2103cctx_max_idle (int max_idle = 0)
2104 CODE:
2105 RETVAL = cctx_max_idle;
2106 if (max_idle > 1)
2107 cctx_max_idle = max_idle;
1351 OUTPUT: 2108 OUTPUT:
1352 RETVAL 2109 RETVAL
1353 2110
1354int 2111int
1355cctx_count () 2112cctx_count ()
… …
1368void 2125void
1369list () 2126list ()
1370 PPCODE: 2127 PPCODE:
1371{ 2128{
1372 struct coro *coro; 2129 struct coro *coro;
1373 for (coro = first; coro; coro = coro->next) 2130 for (coro = coro_first; coro; coro = coro->next)
1374 if (coro->hv) 2131 if (coro->hv)
1375 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 2132 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1376} 2133}
1377 2134
1378void 2135void
1379_eval (Coro::State coro, SV *coderef) 2136call (Coro::State coro, SV *coderef)
2137 ALIAS:
2138 eval = 1
1380 CODE: 2139 CODE:
1381{ 2140{
1382 if (coro->mainstack) 2141 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1383 { 2142 {
1384 struct coro temp; 2143 struct coro temp;
1385 Zero (&temp, 1, struct coro);
1386 temp.save = CORO_SAVE_ALL;
1387 2144
1388 if (!(coro->flags & CF_RUNNING)) 2145 if (!(coro->flags & CF_RUNNING))
1389 { 2146 {
2147 PUTBACK;
1390 save_perl (aTHX_ &temp); 2148 save_perl (aTHX_ &temp);
1391 load_perl (aTHX_ coro); 2149 load_perl (aTHX_ coro);
1392 } 2150 }
1393 2151
1394 { 2152 {
1395 dSP; 2153 dSP;
1396 ENTER; 2154 ENTER;
1397 SAVETMPS; 2155 SAVETMPS;
2156 PUTBACK;
2157 PUSHSTACK;
1398 PUSHMARK (SP); 2158 PUSHMARK (SP);
1399 PUTBACK; 2159
2160 if (ix)
2161 eval_sv (coderef, 0);
2162 else
1400 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 2163 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2164
2165 POPSTACK;
1401 SPAGAIN; 2166 SPAGAIN;
1402 FREETMPS; 2167 FREETMPS;
1403 LEAVE; 2168 LEAVE;
1404 PUTBACK; 2169 PUTBACK;
1405 } 2170 }
1406 2171
1407 if (!(coro->flags & CF_RUNNING)) 2172 if (!(coro->flags & CF_RUNNING))
1408 { 2173 {
1409 save_perl (aTHX_ coro); 2174 save_perl (aTHX_ coro);
1410 load_perl (aTHX_ &temp); 2175 load_perl (aTHX_ &temp);
2176 SPAGAIN;
1411 } 2177 }
1412 } 2178 }
1413} 2179}
1414 2180
1415SV * 2181SV *
1416is_ready (Coro::State coro) 2182is_ready (Coro::State coro)
1417 PROTOTYPE: $ 2183 PROTOTYPE: $
1418 ALIAS: 2184 ALIAS:
1419 is_ready = CF_READY 2185 is_ready = CF_READY
… …
1423 CODE: 2189 CODE:
1424 RETVAL = boolSV (coro->flags & ix); 2190 RETVAL = boolSV (coro->flags & ix);
1425 OUTPUT: 2191 OUTPUT:
1426 RETVAL 2192 RETVAL
1427 2193
1428IV 2194void
2195throw (Coro::State self, SV *throw = &PL_sv_undef)
2196 PROTOTYPE: $;$
2197 CODE:
2198 SvREFCNT_dec (self->throw);
2199 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2200
2201void
2202api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2203 C_ARGS: aTHX_ coro, flags
2204
2205SV *
2206has_cctx (Coro::State coro)
2207 PROTOTYPE: $
2208 CODE:
2209 RETVAL = boolSV (!!coro->cctx);
2210 OUTPUT:
2211 RETVAL
2212
2213int
2214is_traced (Coro::State coro)
2215 PROTOTYPE: $
2216 CODE:
2217 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2218 OUTPUT:
2219 RETVAL
2220
2221UV
1429rss (Coro::State coro) 2222rss (Coro::State coro)
1430 PROTOTYPE: $ 2223 PROTOTYPE: $
2224 ALIAS:
2225 usecount = 1
1431 CODE: 2226 CODE:
1432 RETVAL = coro_rss (coro); 2227 switch (ix)
2228 {
2229 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2230 case 1: RETVAL = coro->usecount; break;
2231 }
1433 OUTPUT: 2232 OUTPUT:
1434 RETVAL 2233 RETVAL
1435 2234
2235void
2236force_cctx ()
2237 CODE:
2238 struct coro *coro = SvSTATE (coro_current);
2239 coro->cctx->idle_sp = 0;
2240
2241void
2242swap_defsv (Coro::State self)
2243 PROTOTYPE: $
2244 ALIAS:
2245 swap_defav = 1
2246 CODE:
2247 if (!self->slot)
2248 croak ("cannot swap state with coroutine that has no saved state");
2249 else
2250 {
2251 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2252 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2253
2254 SV *tmp = *src; *src = *dst; *dst = tmp;
2255 }
1436 2256
1437MODULE = Coro::State PACKAGE = Coro 2257MODULE = Coro::State PACKAGE = Coro
1438 2258
1439BOOT: 2259BOOT:
1440{ 2260{
1441 int i; 2261 int i;
1442 2262
2263 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2264 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2265 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2266
2267 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2268 SvREADONLY_on (coro_current);
2269
1443 coro_stash = gv_stashpv ("Coro", TRUE); 2270 coro_stash = gv_stashpv ("Coro", TRUE);
1444 2271
1445 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2272 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1446 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2273 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1447 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2274 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1448 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2275 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1449 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2276 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1450 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2277 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1451 2278
1452 coro_current = get_sv ("Coro::current", FALSE);
1453 SvREADONLY_on (coro_current);
1454
1455 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2279 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1456 coro_ready[i] = newAV (); 2280 coro_ready[i] = newAV ();
1457 2281
1458 { 2282 {
1459 SV *sv = perl_get_sv("Coro::API", 1); 2283 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1460 2284
1461 coroapi.schedule = api_schedule; 2285 coroapi.schedule = api_schedule;
1462 coroapi.save = api_save;
1463 coroapi.cede = api_cede; 2286 coroapi.cede = api_cede;
1464 coroapi.cede_notself = api_cede_notself; 2287 coroapi.cede_notself = api_cede_notself;
1465 coroapi.ready = api_ready; 2288 coroapi.ready = api_ready;
1466 coroapi.is_ready = api_is_ready; 2289 coroapi.is_ready = api_is_ready;
1467 coroapi.nready = &coro_nready; 2290 coroapi.nready = coro_nready;
1468 coroapi.current = coro_current; 2291 coroapi.current = coro_current;
1469 2292
1470 GCoroAPI = &coroapi; 2293 GCoroAPI = &coroapi;
1471 sv_setiv (sv, (IV)&coroapi); 2294 sv_setiv (sv, (IV)&coroapi);
1472 SvREADONLY_on (sv); 2295 SvREADONLY_on (sv);
… …
1476void 2299void
1477_set_current (SV *current) 2300_set_current (SV *current)
1478 PROTOTYPE: $ 2301 PROTOTYPE: $
1479 CODE: 2302 CODE:
1480 SvREFCNT_dec (SvRV (coro_current)); 2303 SvREFCNT_dec (SvRV (coro_current));
1481 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2304 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2305
2306void
2307_set_readyhook (SV *hook)
2308 PROTOTYPE: $
2309 CODE:
2310 LOCK;
2311 SvREFCNT_dec (coro_readyhook);
2312 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2313 UNLOCK;
1482 2314
1483int 2315int
1484prio (Coro::State coro, int newprio = 0) 2316prio (Coro::State coro, int newprio = 0)
1485 ALIAS: 2317 ALIAS:
1486 nice = 1 2318 nice = 1
… …
1504 2336
1505SV * 2337SV *
1506ready (SV *self) 2338ready (SV *self)
1507 PROTOTYPE: $ 2339 PROTOTYPE: $
1508 CODE: 2340 CODE:
1509 RETVAL = boolSV (api_ready (self)); 2341 RETVAL = boolSV (api_ready (aTHX_ self));
1510 OUTPUT: 2342 OUTPUT:
1511 RETVAL 2343 RETVAL
1512 2344
1513int 2345int
1514nready (...) 2346nready (...)
… …
1516 CODE: 2348 CODE:
1517 RETVAL = coro_nready; 2349 RETVAL = coro_nready;
1518 OUTPUT: 2350 OUTPUT:
1519 RETVAL 2351 RETVAL
1520 2352
2353# for async_pool speedup
2354void
2355_pool_1 (SV *cb)
2356 CODE:
2357{
2358 struct coro *coro = SvSTATE (coro_current);
2359 HV *hv = (HV *)SvRV (coro_current);
2360 AV *defav = GvAV (PL_defgv);
2361 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2362 AV *invoke_av;
2363 int i, len;
2364
2365 if (!invoke)
2366 {
2367 SV *old = PL_diehook;
2368 PL_diehook = 0;
2369 SvREFCNT_dec (old);
2370 croak ("\3async_pool terminate\2\n");
2371 }
2372
2373 SvREFCNT_dec (coro->saved_deffh);
2374 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2375
2376 hv_store (hv, "desc", sizeof ("desc") - 1,
2377 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2378
2379 invoke_av = (AV *)SvRV (invoke);
2380 len = av_len (invoke_av);
2381
2382 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2383
2384 if (len > 0)
2385 {
2386 av_fill (defav, len - 1);
2387 for (i = 0; i < len; ++i)
2388 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2389 }
2390
2391 SvREFCNT_dec (invoke);
2392}
2393
2394void
2395_pool_2 (SV *cb)
2396 CODE:
2397{
2398 struct coro *coro = SvSTATE (coro_current);
2399
2400 sv_setsv (cb, &PL_sv_undef);
2401
2402 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2403 coro->saved_deffh = 0;
2404
2405 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2406 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2407 {
2408 SV *old = PL_diehook;
2409 PL_diehook = 0;
2410 SvREFCNT_dec (old);
2411 croak ("\3async_pool terminate\2\n");
2412 }
2413
2414 av_clear (GvAV (PL_defgv));
2415 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2416 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2417
2418 coro->prio = 0;
2419
2420 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2421 api_trace (aTHX_ coro_current, 0);
2422
2423 av_push (av_async_pool, newSVsv (coro_current));
2424}
2425
2426#if 0
2427
2428void
2429_generator_call (...)
2430 PROTOTYPE: @
2431 PPCODE:
2432 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2433 xxxx
2434 abort ();
2435
2436SV *
2437gensub (SV *sub, ...)
2438 PROTOTYPE: &;@
2439 CODE:
2440{
2441 struct coro *coro;
2442 MAGIC *mg;
2443 CV *xcv;
2444 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2445 int i;
2446
2447 CvGV (ncv) = CvGV (cv);
2448 CvFILE (ncv) = CvFILE (cv);
2449
2450 Newz (0, coro, 1, struct coro);
2451 coro->args = newAV ();
2452 coro->flags = CF_NEW;
2453
2454 av_extend (coro->args, items - 1);
2455 for (i = 1; i < items; i++)
2456 av_push (coro->args, newSVsv (ST (i)));
2457
2458 CvISXSUB_on (ncv);
2459 CvXSUBANY (ncv).any_ptr = (void *)coro;
2460
2461 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2462
2463 CvXSUB (ncv) = CvXSUB (xcv);
2464 CvANON_on (ncv);
2465
2466 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2467 RETVAL = newRV_noinc ((SV *)ncv);
2468}
2469 OUTPUT:
2470 RETVAL
2471
2472#endif
2473
2474
1521MODULE = Coro::State PACKAGE = Coro::AIO 2475MODULE = Coro::State PACKAGE = Coro::AIO
1522 2476
1523SV * 2477void
1524_get_state () 2478_get_state (SV *self)
1525 CODE: 2479 PPCODE:
1526{ 2480{
1527 struct io_state *data; 2481 AV *defav = GvAV (PL_defgv);
1528 2482 AV *av = newAV ();
2483 int i;
1529 RETVAL = newSV (sizeof (struct io_state)); 2484 SV *data_sv = newSV (sizeof (struct io_state));
1530 data = (struct io_state *)SvPVX (RETVAL); 2485 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1531 SvCUR_set (RETVAL, sizeof (struct io_state)); 2486 SvCUR_set (data_sv, sizeof (struct io_state));
1532 SvPOK_only (RETVAL); 2487 SvPOK_only (data_sv);
1533 2488
1534 data->errorno = errno; 2489 data->errorno = errno;
1535 data->laststype = PL_laststype; 2490 data->laststype = PL_laststype;
1536 data->laststatval = PL_laststatval; 2491 data->laststatval = PL_laststatval;
1537 data->statcache = PL_statcache; 2492 data->statcache = PL_statcache;
2493
2494 av_extend (av, AvFILLp (defav) + 1 + 1);
2495
2496 for (i = 0; i <= AvFILLp (defav); ++i)
2497 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2498
2499 av_push (av, data_sv);
2500
2501 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2502
2503 api_ready (aTHX_ self);
1538} 2504}
1539 OUTPUT:
1540 RETVAL
1541 2505
1542void 2506void
1543_set_state (char *data_) 2507_set_state (SV *state)
1544 PROTOTYPE: $ 2508 PROTOTYPE: $
1545 CODE: 2509 PPCODE:
1546{ 2510{
1547 struct io_state *data = (void *)data_; 2511 AV *av = (AV *)SvRV (state);
2512 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2513 int i;
1548 2514
1549 errno = data->errorno; 2515 errno = data->errorno;
1550 PL_laststype = data->laststype; 2516 PL_laststype = data->laststype;
1551 PL_laststatval = data->laststatval; 2517 PL_laststatval = data->laststatval;
1552 PL_statcache = data->statcache; 2518 PL_statcache = data->statcache;
1553}
1554 2519
2520 EXTEND (SP, AvFILLp (av));
2521 for (i = 0; i < AvFILLp (av); ++i)
2522 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2523}
2524
2525
2526MODULE = Coro::State PACKAGE = Coro::AnyEvent
2527
2528BOOT:
2529 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2530
2531SV *
2532_schedule (...)
2533 PROTOTYPE: @
2534 CODE:
2535{
2536 static int incede;
2537
2538 api_cede_notself (aTHX);
2539
2540 ++incede;
2541 while (coro_nready >= incede && api_cede (aTHX))
2542 ;
2543
2544 sv_setsv (sv_activity, &PL_sv_undef);
2545 if (coro_nready >= incede)
2546 {
2547 PUSHMARK (SP);
2548 PUTBACK;
2549 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2550 SPAGAIN;
2551 }
2552
2553 --incede;
2554}
2555
2556
2557MODULE = Coro::State PACKAGE = PerlIO::cede
2558
2559BOOT:
2560 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2561

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