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Comparing Coro/Coro/State.xs (file contents):
Revision 1.134 by root, Thu Jan 4 23:49:27 2007 UTC vs.
Revision 1.210 by root, Wed Oct 10 03:24:40 2007 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2
3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
2 5
3#include "EXTERN.h" 6#include "EXTERN.h"
4#include "perl.h" 7#include "perl.h"
5#include "XSUB.h" 8#include "XSUB.h"
6 9
7#include "patchlevel.h" 10#include "patchlevel.h"
8 11
9#include <stdio.h> 12#include <stdio.h>
10#include <errno.h> 13#include <errno.h>
11#include <assert.h> 14#include <assert.h>
15#include <inttypes.h> /* portable stdint.h */
12 16
13#ifdef HAVE_MMAP 17#ifdef HAVE_MMAP
14# include <unistd.h> 18# include <unistd.h>
15# include <sys/mman.h> 19# include <sys/mman.h>
16# ifndef MAP_ANONYMOUS 20# ifndef MAP_ANONYMOUS
… …
31#else 35#else
32# define PAGESIZE 0 36# define PAGESIZE 0
33# define BOOT_PAGESIZE (void)0 37# define BOOT_PAGESIZE (void)0
34#endif 38#endif
35 39
36#if USE_VALGRIND 40#if CORO_USE_VALGRIND
37# include <valgrind/valgrind.h> 41# 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)
38#endif 45#endif
39 46
40/* the maximum number of idle cctx that will be pooled */ 47/* the maximum number of idle cctx that will be pooled */
41#define MAX_IDLE_CCTX 8 48#define MAX_IDLE_CCTX 8
42 49
… …
70/* 5.8.7 */ 77/* 5.8.7 */
71#ifndef SvRV_set 78#ifndef SvRV_set
72# define SvRV_set(s,v) SvRV(s) = (v) 79# define SvRV_set(s,v) SvRV(s) = (v)
73#endif 80#endif
74 81
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
75#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 90#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76# undef STACKGUARD 91# undef CORO_STACKGUARD
77#endif 92#endif
78 93
79#ifndef STACKGUARD 94#ifndef CORO_STACKGUARD
80# define STACKGUARD 0 95# define CORO_STACKGUARD 0
81#endif 96#endif
82 97
83/* prefer perl internal functions over our own? */ 98/* prefer perl internal functions over our own? */
84#ifndef PREFER_PERL_FUNCTIONS 99#ifndef CORO_PREFER_PERL_FUNCTIONS
85# define PREFER_PERL_FUNCTIONS 0 100# define CORO_PREFER_PERL_FUNCTIONS 0
86#endif 101#endif
87 102
88/* The next macro should declare a variable stacklevel that contains and approximation 103/* The next macros try to return the current stack pointer, in an as
89 * to the current C stack pointer. Its property is that it changes with each call 104 * portable way as possible. */
90 * and should be unique. */
91#define dSTACKLEVEL int stacklevel 105#define dSTACKLEVEL volatile char stacklevel
92#define STACKLEVEL ((void *)&stacklevel) 106#define STACKLEVEL ((void *)&stacklevel)
93 107
94#define IN_DESTRUCT (PL_main_cv == Nullcv) 108#define IN_DESTRUCT (PL_main_cv == Nullcv)
95 109
96#if __GNUC__ >= 3 110#if __GNUC__ >= 3
97# define attribute(x) __attribute__(x) 111# define attribute(x) __attribute__(x)
98# define BARRIER __asm__ __volatile__ ("" : : : "memory") 112# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113# define expect(expr,value) __builtin_expect ((expr),(value))
99#else 114#else
100# define attribute(x) 115# define attribute(x)
101# define BARRIER 116# define BARRIER
117# define expect(expr,value) (expr)
102#endif 118#endif
119
120#define expect_false(expr) expect ((expr) != 0, 0)
121#define expect_true(expr) expect ((expr) != 0, 1)
103 122
104#define NOINLINE attribute ((noinline)) 123#define NOINLINE attribute ((noinline))
105 124
106#include "CoroAPI.h" 125#include "CoroAPI.h"
107 126
… …
112#else 131#else
113# define LOCK (void)0 132# define LOCK (void)0
114# define UNLOCK (void)0 133# define UNLOCK (void)0
115#endif 134#endif
116 135
136#define strpair(const) const, sizeof (const) - 1
137
138/* helper storage struct for Coro::AIO */
117struct io_state 139struct io_state
118{ 140{
119 int errorno; 141 int errorno;
120 I32 laststype; 142 I32 laststype;
121 int laststatval; 143 int laststatval;
122 Stat_t statcache; 144 Stat_t statcache;
123}; 145};
124 146
147static size_t coro_stacksize = CORO_STACKSIZE;
125static struct CoroAPI coroapi; 148static struct CoroAPI coroapi;
126static AV *main_mainstack; /* used to differentiate between $main and others */ 149static AV *main_mainstack; /* used to differentiate between $main and others */
150static JMPENV *main_top_env;
127static HV *coro_state_stash, *coro_stash; 151static HV *coro_state_stash, *coro_stash;
128static SV *coro_mortal; /* will be freed after next transfer */ 152static SV *coro_mortal; /* will be freed after next transfer */
129 153
130static struct coro_cctx *cctx_first; 154static GV *irsgv; /* $/ */
155static GV *stdoutgv; /* *STDOUT */
156
157static HV *hv_sig; /* %SIG */
158static SV *sv_diehook;
159static SV *sv_warnhook;
160
161/* async_pool helper stuff */
162static SV *sv_pool_rss;
163static SV *sv_pool_size;
164static AV *av_async_pool;
165
166static struct coro_cctx *cctx_first[3]; /* index by GIMME_V type, void, scalar, array */
131static int cctx_count, cctx_idle; 167static int cctx_count, cctx_idle[3];
168
169enum {
170 CC_MAPPED = 0x01,
171 CC_NOREUSE = 0x02, /* throw this away after tracing */
172 CC_TRACE = 0x04,
173 CC_TRACE_SUB = 0x08, /* trace sub calls */
174 CC_TRACE_LINE = 0x10, /* trace each statement */
175 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
176};
132 177
133/* this is a structure representing a c-level coroutine */ 178/* this is a structure representing a c-level coroutine */
134typedef struct coro_cctx { 179typedef struct coro_cctx {
135 struct coro_cctx *next; 180 struct coro_cctx *next;
136 181
137 /* the stack */ 182 /* the stack */
138 void *sptr; 183 void *sptr;
139 long ssize; /* positive == mmap, otherwise malloc */ 184 size_t ssize;
140 185
141 /* cpu state */ 186 /* cpu state */
142 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 187 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
143 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 188 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
144 JMPENV *top_env; 189 JMPENV *top_env;
145 coro_context cctx; 190 coro_context cctx;
146 191
147 int inuse;
148
149#if USE_VALGRIND 192#if CORO_USE_VALGRIND
150 int valgrind_id; 193 int valgrind_id;
151#endif 194#endif
195 unsigned char flags;
152} coro_cctx; 196} coro_cctx;
153 197
154enum { 198enum {
155 CF_RUNNING = 0x0001, /* coroutine is running */ 199 CF_RUNNING = 0x0001, /* coroutine is running */
156 CF_READY = 0x0002, /* coroutine is ready */ 200 CF_READY = 0x0002, /* coroutine is ready */
157 CF_NEW = 0x0004, /* has never been switched to */ 201 CF_NEW = 0x0004, /* has never been switched to */
158 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 202 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
159}; 203};
160 204
205/* the structure where most of the perl state is stored, overlaid on the cxstack */
206typedef struct {
207 SV *defsv;
208 AV *defav;
209 SV *errsv;
210 SV *irsgv;
211#define VAR(name,type) type name;
212# include "state.h"
213#undef VAR
214} perl_slots;
215
216#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
217
161/* this is a structure representing a perl-level coroutine */ 218/* this is a structure representing a perl-level coroutine */
162struct coro { 219struct coro {
163 /* the c coroutine allocated to this perl coroutine, if any */ 220 /* the c coroutine allocated to this perl coroutine, if any */
164 coro_cctx *cctx; 221 coro_cctx *cctx;
222 int gimme;
165 223
224 /* process data */
225 AV *mainstack;
226 perl_slots *slot; /* basically the saved sp */
227
166 /* data associated with this coroutine (initial args) */ 228 AV *args; /* data associated with this coroutine (initial args) */
167 AV *args; 229 int refcnt; /* coroutines are refcounted, yes */
168 int refcnt;
169 int save; /* CORO_SAVE flags */
170 int flags; /* CF_ flags */ 230 int flags; /* CF_ flags */
231 HV *hv; /* the perl hash associated with this coro, if any */
171 232
172 /* optionally saved, might be zero */ 233 /* statistics */
173 AV *defav; /* @_ */ 234 int usecount; /* number of transfers to this coro */
174 SV *defsv; /* $_ */
175 SV *errsv; /* $@ */
176 SV *irssv; /* $/ */
177 SV *irssv_sv; /* real $/ cache */
178
179#define VAR(name,type) type name;
180# include "state.h"
181#undef VAR
182 235
183 /* coro process data */ 236 /* coro process data */
184 int prio; 237 int prio;
238 SV *throw; /* exception to be thrown */
239
240 /* async_pool */
241 SV *saved_deffh;
242
243 /* linked list */
244 struct coro *next, *prev;
185}; 245};
186 246
187typedef struct coro *Coro__State; 247typedef struct coro *Coro__State;
188typedef struct coro *Coro__State_or_hashref; 248typedef struct coro *Coro__State_or_hashref;
189 249
250/** Coro ********************************************************************/
251
252#define PRIO_MAX 3
253#define PRIO_HIGH 1
254#define PRIO_NORMAL 0
255#define PRIO_LOW -1
256#define PRIO_IDLE -3
257#define PRIO_MIN -4
258
259/* for Coro.pm */
260static SV *coro_current;
261static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
262static int coro_nready;
263static struct coro *coro_first;
264
265/** lowlevel stuff **********************************************************/
266
267static SV *
268coro_get_sv (const char *name, int create)
269{
270#if PERL_VERSION_ATLEAST (5,9,0)
271 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
272 get_sv (name, create);
273#endif
274 return get_sv (name, create);
275}
276
190static AV * 277static AV *
278coro_get_av (const char *name, int create)
279{
280#if PERL_VERSION_ATLEAST (5,9,0)
281 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
282 get_av (name, create);
283#endif
284 return get_av (name, create);
285}
286
287static HV *
288coro_get_hv (const char *name, int create)
289{
290#if PERL_VERSION_ATLEAST (5,9,0)
291 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
292 get_hv (name, create);
293#endif
294 return get_hv (name, create);
295}
296
297static AV *
191coro_clone_padlist (CV *cv) 298coro_clone_padlist (pTHX_ CV *cv)
192{ 299{
193 AV *padlist = CvPADLIST (cv); 300 AV *padlist = CvPADLIST (cv);
194 AV *newpadlist, *newpad; 301 AV *newpadlist, *newpad;
195 302
196 newpadlist = newAV (); 303 newpadlist = newAV ();
… …
208 315
209 return newpadlist; 316 return newpadlist;
210} 317}
211 318
212static void 319static void
213free_padlist (AV *padlist) 320free_padlist (pTHX_ AV *padlist)
214{ 321{
215 /* may be during global destruction */ 322 /* may be during global destruction */
216 if (SvREFCNT (padlist)) 323 if (SvREFCNT (padlist))
217 { 324 {
218 I32 i = AvFILLp (padlist); 325 I32 i = AvFILLp (padlist);
… …
239 AV *padlist; 346 AV *padlist;
240 AV *av = (AV *)mg->mg_obj; 347 AV *av = (AV *)mg->mg_obj;
241 348
242 /* casting is fun. */ 349 /* casting is fun. */
243 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 350 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
244 free_padlist (padlist); 351 free_padlist (aTHX_ padlist);
245 352
246 SvREFCNT_dec (av); 353 SvREFCNT_dec (av);
247 354
248 return 0; 355 return 0;
249} 356}
… …
257 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 364 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
258 ? SvMAGIC (cv) \ 365 ? SvMAGIC (cv) \
259 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 366 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
260 : 0 367 : 0
261 368
369static struct coro *
370SvSTATE_ (pTHX_ SV *coro)
371{
372 HV *stash;
373 MAGIC *mg;
374
375 if (SvROK (coro))
376 coro = SvRV (coro);
377
378 if (expect_false (SvTYPE (coro) != SVt_PVHV))
379 croak ("Coro::State object required");
380
381 stash = SvSTASH (coro);
382 if (expect_false (stash != coro_stash && stash != coro_state_stash))
383 {
384 /* very slow, but rare, check */
385 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
386 croak ("Coro::State object required");
387 }
388
389 mg = CORO_MAGIC (coro);
390 return (struct coro *)mg->mg_ptr;
391}
392
393#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
394
262/* the next two functions merely cache the padlists */ 395/* the next two functions merely cache the padlists */
263static void 396static void
264get_padlist (CV *cv) 397get_padlist (pTHX_ CV *cv)
265{ 398{
266 MAGIC *mg = CORO_MAGIC (cv); 399 MAGIC *mg = CORO_MAGIC (cv);
267 AV *av; 400 AV *av;
268 401
269 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 402 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
270 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 403 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
271 else 404 else
272 { 405 {
273#if PREFER_PERL_FUNCTIONS 406#if CORO_PREFER_PERL_FUNCTIONS
274 /* this is probably cleaner, but also slower? */ 407 /* this is probably cleaner, but also slower? */
275 CV *cp = Perl_cv_clone (cv); 408 CV *cp = Perl_cv_clone (cv);
276 CvPADLIST (cv) = CvPADLIST (cp); 409 CvPADLIST (cv) = CvPADLIST (cp);
277 CvPADLIST (cp) = 0; 410 CvPADLIST (cp) = 0;
278 SvREFCNT_dec (cp); 411 SvREFCNT_dec (cp);
279#else 412#else
280 CvPADLIST (cv) = coro_clone_padlist (cv); 413 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
281#endif 414#endif
282 } 415 }
283} 416}
284 417
285static void 418static void
286put_padlist (CV *cv) 419put_padlist (pTHX_ CV *cv)
287{ 420{
288 MAGIC *mg = CORO_MAGIC (cv); 421 MAGIC *mg = CORO_MAGIC (cv);
289 AV *av; 422 AV *av;
290 423
291 if (!mg) 424 if (expect_false (!mg))
292 { 425 {
293 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); 426 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
294 mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 427 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
295 mg->mg_virtual = &vtbl_coro; 428 mg->mg_virtual = &vtbl_coro;
296 mg->mg_obj = (SV *)newAV (); 429 mg->mg_obj = (SV *)newAV ();
297 } 430 }
298 431
299 av = (AV *)mg->mg_obj; 432 av = (AV *)mg->mg_obj;
300 433
301 if (AvFILLp (av) >= AvMAX (av)) 434 if (expect_false (AvFILLp (av) >= AvMAX (av)))
302 av_extend (av, AvMAX (av) + 1); 435 av_extend (av, AvMAX (av) + 1);
303 436
304 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 437 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
305} 438}
306 439
307#define SB do { 440/** load & save, init *******************************************************/
308#define SE } while (0)
309 441
310#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
311
312static void 442static void
313load_perl (Coro__State c) 443load_perl (pTHX_ Coro__State c)
314{ 444{
445 perl_slots *slot = c->slot;
446 c->slot = 0;
447
448 PL_mainstack = c->mainstack;
449
450 GvSV (PL_defgv) = slot->defsv;
451 GvAV (PL_defgv) = slot->defav;
452 GvSV (PL_errgv) = slot->errsv;
453 GvSV (irsgv) = slot->irsgv;
454
315#define VAR(name,type) PL_ ## name = c->name; 455 #define VAR(name,type) PL_ ## name = slot->name;
316# include "state.h" 456 # include "state.h"
317#undef VAR 457 #undef VAR
318 458
319 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 459 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
320 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 460 /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
321 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
322 if (c->irssv)
323 {
324 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
325 SvREFCNT_dec (c->irssv);
326 else
327 {
328 REPLACE_SV (PL_rs, c->irssv);
329 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
330 sv_setsv (c->irssv_sv, PL_rs);
331 }
332 }
333 461
334 { 462 {
335 dSP; 463 dSP;
464
336 CV *cv; 465 CV *cv;
337 466
338 /* now do the ugly restore mess */ 467 /* now do the ugly restore mess */
339 while ((cv = (CV *)POPs)) 468 while (expect_true (cv = (CV *)POPs))
340 { 469 {
341 put_padlist (cv); /* mark this padlist as available */ 470 put_padlist (aTHX_ cv); /* mark this padlist as available */
342 CvDEPTH (cv) = PTR2IV (POPs); 471 CvDEPTH (cv) = PTR2IV (POPs);
343 CvPADLIST (cv) = (AV *)POPs; 472 CvPADLIST (cv) = (AV *)POPs;
344 } 473 }
345 474
346 PUTBACK; 475 PUTBACK;
347 } 476 }
348} 477}
349 478
350static void 479static void
351save_perl (Coro__State c) 480save_perl (pTHX_ Coro__State c)
352{ 481{
353 { 482 {
354 dSP; 483 dSP;
355 I32 cxix = cxstack_ix; 484 I32 cxix = cxstack_ix;
356 PERL_CONTEXT *ccstk = cxstack; 485 PERL_CONTEXT *ccstk = cxstack;
… …
359 /* 488 /*
360 * the worst thing you can imagine happens first - we have to save 489 * the worst thing you can imagine happens first - we have to save
361 * (and reinitialize) all cv's in the whole callchain :( 490 * (and reinitialize) all cv's in the whole callchain :(
362 */ 491 */
363 492
364 EXTEND (SP, 3 + 1);
365 PUSHs (Nullsv); 493 XPUSHs (Nullsv);
366 /* this loop was inspired by pp_caller */ 494 /* this loop was inspired by pp_caller */
367 for (;;) 495 for (;;)
368 { 496 {
369 while (cxix >= 0) 497 while (expect_true (cxix >= 0))
370 { 498 {
371 PERL_CONTEXT *cx = &ccstk[cxix--]; 499 PERL_CONTEXT *cx = &ccstk[cxix--];
372 500
373 if (CxTYPE (cx) == CXt_SUB) 501 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
374 { 502 {
375 CV *cv = cx->blk_sub.cv; 503 CV *cv = cx->blk_sub.cv;
376 504
377 if (CvDEPTH (cv)) 505 if (expect_true (CvDEPTH (cv)))
378 { 506 {
379 EXTEND (SP, 3); 507 EXTEND (SP, 3);
380 PUSHs ((SV *)CvPADLIST (cv)); 508 PUSHs ((SV *)CvPADLIST (cv));
381 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 509 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
382 PUSHs ((SV *)cv); 510 PUSHs ((SV *)cv);
383 511
384 CvDEPTH (cv) = 0; 512 CvDEPTH (cv) = 0;
385 get_padlist (cv); 513 get_padlist (aTHX_ cv);
386 } 514 }
387 } 515 }
388 } 516 }
389 517
390 if (top_si->si_type == PERLSI_MAIN) 518 if (expect_true (top_si->si_type == PERLSI_MAIN))
391 break; 519 break;
392 520
393 top_si = top_si->si_prev; 521 top_si = top_si->si_prev;
394 ccstk = top_si->si_cxstack; 522 ccstk = top_si->si_cxstack;
395 cxix = top_si->si_cxix; 523 cxix = top_si->si_cxix;
396 } 524 }
397 525
398 PUTBACK; 526 PUTBACK;
399 } 527 }
400 528
401 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 529 /* allocate some space on the context stack for our purposes */
402 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 530 /* we manually unroll here, as usually 2 slots is enough */
403 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 531 if (SLOT_COUNT >= 1) CXINC;
404 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 532 if (SLOT_COUNT >= 2) CXINC;
533 if (SLOT_COUNT >= 3) CXINC;
534 {
535 int i;
536 for (i = 3; i < SLOT_COUNT; ++i)
537 CXINC;
538 }
539 cxstack_ix -= SLOT_COUNT; /* undo allocation */
405 540
541 c->mainstack = PL_mainstack;
542
543 {
544 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
545
546 slot->defav = GvAV (PL_defgv);
547 slot->defsv = DEFSV;
548 slot->errsv = ERRSV;
549 slot->irsgv = GvSV (irsgv);
550
406#define VAR(name,type)c->name = PL_ ## name; 551 #define VAR(name,type) slot->name = PL_ ## name;
407# include "state.h" 552 # include "state.h"
408#undef VAR 553 #undef VAR
554 }
409} 555}
410 556
411/* 557/*
412 * allocate various perl stacks. This is an exact copy 558 * allocate various perl stacks. This is an exact copy
413 * of perl.c:init_stacks, except that it uses less memory 559 * of perl.c:init_stacks, except that it uses less memory
414 * on the (sometimes correct) assumption that coroutines do 560 * on the (sometimes correct) assumption that coroutines do
415 * not usually need a lot of stackspace. 561 * not usually need a lot of stackspace.
416 */ 562 */
417#if PREFER_PERL_FUNCTIONS 563#if CORO_PREFER_PERL_FUNCTIONS
418# define coro_init_stacks init_stacks 564# define coro_init_stacks init_stacks
419#else 565#else
420static void 566static void
421coro_init_stacks () 567coro_init_stacks (pTHX)
422{ 568{
423 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 569 PL_curstackinfo = new_stackinfo(32, 8);
424 PL_curstackinfo->si_type = PERLSI_MAIN; 570 PL_curstackinfo->si_type = PERLSI_MAIN;
425 PL_curstack = PL_curstackinfo->si_stack; 571 PL_curstack = PL_curstackinfo->si_stack;
426 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 572 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
427 573
428 PL_stack_base = AvARRAY(PL_curstack); 574 PL_stack_base = AvARRAY(PL_curstack);
429 PL_stack_sp = PL_stack_base; 575 PL_stack_sp = PL_stack_base;
430 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 576 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
431 577
432 New(50,PL_tmps_stack,128,SV*); 578 New(50,PL_tmps_stack,32,SV*);
433 PL_tmps_floor = -1; 579 PL_tmps_floor = -1;
434 PL_tmps_ix = -1; 580 PL_tmps_ix = -1;
435 PL_tmps_max = 128; 581 PL_tmps_max = 32;
436 582
437 New(54,PL_markstack,32,I32); 583 New(54,PL_markstack,16,I32);
438 PL_markstack_ptr = PL_markstack; 584 PL_markstack_ptr = PL_markstack;
439 PL_markstack_max = PL_markstack + 32; 585 PL_markstack_max = PL_markstack + 16;
440 586
441#ifdef SET_MARK_OFFSET 587#ifdef SET_MARK_OFFSET
442 SET_MARK_OFFSET; 588 SET_MARK_OFFSET;
443#endif 589#endif
444 590
445 New(54,PL_scopestack,32,I32); 591 New(54,PL_scopestack,8,I32);
446 PL_scopestack_ix = 0; 592 PL_scopestack_ix = 0;
447 PL_scopestack_max = 32; 593 PL_scopestack_max = 8;
448 594
449 New(54,PL_savestack,64,ANY); 595 New(54,PL_savestack,24,ANY);
450 PL_savestack_ix = 0; 596 PL_savestack_ix = 0;
451 PL_savestack_max = 64; 597 PL_savestack_max = 24;
452 598
453#if !PERL_VERSION_ATLEAST (5,9,0) 599#if !PERL_VERSION_ATLEAST (5,9,0)
454 New(54,PL_retstack,16,OP*); 600 New(54,PL_retstack,4,OP*);
455 PL_retstack_ix = 0; 601 PL_retstack_ix = 0;
456 PL_retstack_max = 16; 602 PL_retstack_max = 4;
457#endif 603#endif
458} 604}
459#endif 605#endif
460 606
461/* 607/*
462 * destroy the stacks, the callchain etc... 608 * destroy the stacks, the callchain etc...
463 */ 609 */
464static void 610static void
465coro_destroy_stacks () 611coro_destroy_stacks (pTHX)
466{ 612{
467 if (!IN_DESTRUCT)
468 {
469 /* restore all saved variables and stuff */
470 LEAVE_SCOPE (0);
471 assert (PL_tmps_floor == -1);
472
473 /* free all temporaries */
474 FREETMPS;
475 assert (PL_tmps_ix == -1);
476
477 /* unwind all extra stacks */
478 POPSTACK_TO (PL_mainstack);
479
480 /* unwind main stack */
481 dounwind (-1);
482 }
483
484 while (PL_curstackinfo->si_next) 613 while (PL_curstackinfo->si_next)
485 PL_curstackinfo = PL_curstackinfo->si_next; 614 PL_curstackinfo = PL_curstackinfo->si_next;
486 615
487 while (PL_curstackinfo) 616 while (PL_curstackinfo)
488 { 617 {
… …
503#if !PERL_VERSION_ATLEAST (5,9,0) 632#if !PERL_VERSION_ATLEAST (5,9,0)
504 Safefree (PL_retstack); 633 Safefree (PL_retstack);
505#endif 634#endif
506} 635}
507 636
508static void 637static size_t
509setup_coro (struct coro *coro) 638coro_rss (pTHX_ struct coro *coro)
639{
640 size_t rss = sizeof (*coro);
641
642 if (coro->mainstack)
643 {
644 perl_slots tmp_slot;
645 perl_slots *slot;
646
647 if (coro->flags & CF_RUNNING)
648 {
649 slot = &tmp_slot;
650
651 #define VAR(name,type) slot->name = PL_ ## name;
652 # include "state.h"
653 #undef VAR
654 }
655 else
656 slot = coro->slot;
657
658 rss += sizeof (slot->curstackinfo);
659 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
660 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
661 rss += slot->tmps_max * sizeof (SV *);
662 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
663 rss += slot->scopestack_max * sizeof (I32);
664 rss += slot->savestack_max * sizeof (ANY);
665
666#if !PERL_VERSION_ATLEAST (5,9,0)
667 rss += slot->retstack_max * sizeof (OP *);
668#endif
669 }
670
671 return rss;
672}
673
674/** coroutine stack handling ************************************************/
675
676static void
677coro_setup (pTHX_ struct coro *coro)
510{ 678{
511 /* 679 /*
512 * emulate part of the perl startup here. 680 * emulate part of the perl startup here.
513 */ 681 */
514
515 coro_init_stacks (); 682 coro_init_stacks (aTHX);
516 683
684 PL_runops = RUNOPS_DEFAULT;
517 PL_curcop = &PL_compiling; 685 PL_curcop = &PL_compiling;
518 PL_in_eval = EVAL_NULL; 686 PL_in_eval = EVAL_NULL;
687 PL_comppad = 0;
519 PL_curpm = 0; 688 PL_curpm = 0;
689 PL_curpad = 0;
520 PL_localizing = 0; 690 PL_localizing = 0;
521 PL_dirty = 0; 691 PL_dirty = 0;
522 PL_restartop = 0; 692 PL_restartop = 0;
693 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
694 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
695
696 GvSV (PL_defgv) = newSV (0);
697 GvAV (PL_defgv) = coro->args; coro->args = 0;
698 GvSV (PL_errgv) = newSV (0);
699 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
700 PL_rs = newSVsv (GvSV (irsgv));
701 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
523 702
524 { 703 {
525 dSP; 704 dSP;
526 LOGOP myop; 705 LOGOP myop;
527 706
528 SvREFCNT_dec (GvAV (PL_defgv));
529 GvAV (PL_defgv) = coro->args; coro->args = 0;
530
531 Zero (&myop, 1, LOGOP); 707 Zero (&myop, 1, LOGOP);
532 myop.op_next = Nullop; 708 myop.op_next = Nullop;
533 myop.op_flags = OPf_WANT_VOID; 709 myop.op_flags = OPf_WANT_VOID;
534 710
535 PUSHMARK (SP); 711 PUSHMARK (SP);
536 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 712 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
537 PUTBACK; 713 PUTBACK;
538 PL_op = (OP *)&myop; 714 PL_op = (OP *)&myop;
539 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 715 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
540 SPAGAIN; 716 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;
541 } 731 }
542 732
543 ENTER; /* necessary e.g. for dounwind */ 733 /* this newly created coroutine might be run on an existing cctx which most
734 * likely was suspended in set_stacklevel, called from entersub.
735 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
736 * so we ENTER here for symmetry
737 */
738 ENTER;
544} 739}
545 740
546static void 741static void
742coro_destroy (pTHX_ struct coro *coro)
743{
744 if (!IN_DESTRUCT)
745 {
746 /* restore all saved variables and stuff */
747 LEAVE_SCOPE (0);
748 assert (PL_tmps_floor == -1);
749
750 /* free all temporaries */
751 FREETMPS;
752 assert (PL_tmps_ix == -1);
753
754 /* unwind all extra stacks */
755 POPSTACK_TO (PL_mainstack);
756
757 /* unwind main stack */
758 dounwind (-1);
759 }
760
761 SvREFCNT_dec (GvSV (PL_defgv));
762 SvREFCNT_dec (GvAV (PL_defgv));
763 SvREFCNT_dec (GvSV (PL_errgv));
764 SvREFCNT_dec (PL_defoutgv);
765 SvREFCNT_dec (PL_rs);
766 SvREFCNT_dec (GvSV (irsgv));
767
768 SvREFCNT_dec (PL_diehook);
769 SvREFCNT_dec (PL_warnhook);
770
771 SvREFCNT_dec (coro->saved_deffh);
772 SvREFCNT_dec (coro->throw);
773
774 coro_destroy_stacks (aTHX);
775}
776
777static void
547free_coro_mortal () 778free_coro_mortal (pTHX)
548{ 779{
549 if (coro_mortal) 780 if (expect_true (coro_mortal))
550 { 781 {
551 SvREFCNT_dec (coro_mortal); 782 SvREFCNT_dec (coro_mortal);
552 coro_mortal = 0; 783 coro_mortal = 0;
553 } 784 }
554} 785}
555 786
787static int
788runops_trace (pTHX)
789{
790 COP *oldcop = 0;
791 int oldcxix = -2;
792 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
793 coro_cctx *cctx = coro->cctx;
794
795 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
796 {
797 PERL_ASYNC_CHECK ();
798
799 if (cctx->flags & CC_TRACE_ALL)
800 {
801 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
802 {
803 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
804 SV **bot, **top;
805 AV *av = newAV (); /* return values */
806 SV **cb;
807 dSP;
808
809 GV *gv = CvGV (cx->blk_sub.cv);
810 SV *fullname = sv_2mortal (newSV (0));
811 if (isGV (gv))
812 gv_efullname3 (fullname, gv, 0);
813
814 bot = PL_stack_base + cx->blk_oldsp + 1;
815 top = cx->blk_gimme == G_ARRAY ? SP + 1
816 : cx->blk_gimme == G_SCALAR ? bot + 1
817 : bot;
818
819 av_extend (av, top - bot);
820 while (bot < top)
821 av_push (av, SvREFCNT_inc (*bot++));
822
823 PL_runops = RUNOPS_DEFAULT;
824 ENTER;
825 SAVETMPS;
826 EXTEND (SP, 3);
827 PUSHMARK (SP);
828 PUSHs (&PL_sv_no);
829 PUSHs (fullname);
830 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
831 PUTBACK;
832 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
833 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
834 SPAGAIN;
835 FREETMPS;
836 LEAVE;
837 PL_runops = runops_trace;
838 }
839
840 if (oldcop != PL_curcop)
841 {
842 oldcop = PL_curcop;
843
844 if (PL_curcop != &PL_compiling)
845 {
846 SV **cb;
847
848 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
849 {
850 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
851
852 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
853 {
854 runops_proc_t old_runops = PL_runops;
855 dSP;
856 GV *gv = CvGV (cx->blk_sub.cv);
857 SV *fullname = sv_2mortal (newSV (0));
858
859 if (isGV (gv))
860 gv_efullname3 (fullname, gv, 0);
861
862 PL_runops = RUNOPS_DEFAULT;
863 ENTER;
864 SAVETMPS;
865 EXTEND (SP, 3);
866 PUSHMARK (SP);
867 PUSHs (&PL_sv_yes);
868 PUSHs (fullname);
869 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
870 PUTBACK;
871 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
872 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
873 SPAGAIN;
874 FREETMPS;
875 LEAVE;
876 PL_runops = runops_trace;
877 }
878
879 oldcxix = cxstack_ix;
880 }
881
882 if (cctx->flags & CC_TRACE_LINE)
883 {
884 dSP;
885
886 PL_runops = RUNOPS_DEFAULT;
887 ENTER;
888 SAVETMPS;
889 EXTEND (SP, 3);
890 PL_runops = RUNOPS_DEFAULT;
891 PUSHMARK (SP);
892 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
893 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
894 PUTBACK;
895 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
896 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
897 SPAGAIN;
898 FREETMPS;
899 LEAVE;
900 PL_runops = runops_trace;
901 }
902 }
903 }
904 }
905 }
906
907 TAINT_NOT;
908 return 0;
909}
910
556/* inject a fake call to Coro::State::_cctx_init into the execution */ 911/* 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 */
913/* during execution of a perl program */
557static void NOINLINE 914static void NOINLINE
558prepare_cctx (coro_cctx *cctx) 915cctx_prepare (pTHX_ coro_cctx *cctx)
559{ 916{
560 dSP; 917 dSP;
561 LOGOP myop; 918 LOGOP myop;
919
920 PL_top_env = &PL_start_env;
921
922 if (cctx->flags & CC_TRACE)
923 PL_runops = runops_trace;
562 924
563 Zero (&myop, 1, LOGOP); 925 Zero (&myop, 1, LOGOP);
564 myop.op_next = PL_op; 926 myop.op_next = PL_op;
565 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 927 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
566 928
… …
572 PL_op = (OP *)&myop; 934 PL_op = (OP *)&myop;
573 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 935 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
574 SPAGAIN; 936 SPAGAIN;
575} 937}
576 938
939/*
940 * this is a _very_ stripped down perl interpreter ;)
941 */
577static void 942static void
578coro_run (void *arg) 943cctx_run (void *arg)
579{ 944{
945 dTHX;
946
580 /* coro_run is the alternative tail of transfer(), so unlock here. */ 947 /* cctx_run is the alternative tail of transfer(), so unlock here. */
581 UNLOCK; 948 UNLOCK;
582 949
583 /* 950 /* we now skip the entersub that lead to transfer() */
584 * this is a _very_ stripped down perl interpreter ;) 951 PL_op = PL_op->op_next;
585 */
586 PL_top_env = &PL_start_env;
587 952
588 /* inject call to cctx_init */ 953 /* inject a fake subroutine call to cctx_init */
589 prepare_cctx ((coro_cctx *)arg); 954 cctx_prepare (aTHX_ (coro_cctx *)arg);
590 955
591 /* somebody will hit me for both perl_run and PL_restartop */ 956 /* somebody or something will hit me for both perl_run and PL_restartop */
592 PL_restartop = PL_op; 957 PL_restartop = PL_op;
593 perl_run (PL_curinterp); 958 perl_run (PL_curinterp);
594 959
595 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 960 /*
596 abort (); 961 * 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)
963 * 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"
965 * coroutine as Coro has no such concept
966 */
967 PL_top_env = main_top_env;
968 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
597} 969}
598 970
599static coro_cctx * 971static coro_cctx *
600cctx_new () 972cctx_new ()
601{ 973{
602 coro_cctx *cctx; 974 coro_cctx *cctx;
975 void *stack_start;
976 size_t stack_size;
603 977
604 ++cctx_count; 978 ++cctx_count;
605 979
606 Newz (0, cctx, 1, coro_cctx); 980 Newz (0, cctx, 1, coro_cctx);
607 981
608#if HAVE_MMAP 982#if HAVE_MMAP
609
610 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 983 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
611 /* mmap supposedly does allocate-on-write for us */ 984 /* mmap supposedly does allocate-on-write for us */
612 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 985 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
613 986
614 if (cctx->sptr == (void *)-1) 987 if (cctx->sptr != (void *)-1)
615 {
616 perror ("FATAL: unable to mmap stack for coroutine");
617 _exit (EXIT_FAILURE);
618 } 988 {
619
620# if STACKGUARD 989# if CORO_STACKGUARD
621 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 990 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
622# endif 991# endif
992 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
993 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
994 cctx->flags |= CC_MAPPED;
995 }
996 else
997#endif
998 {
999 cctx->ssize = coro_stacksize * (long)sizeof (long);
1000 New (0, cctx->sptr, coro_stacksize, long);
623 1001
624#else
625
626 cctx->ssize = STACKSIZE * (long)sizeof (long);
627 New (0, cctx->sptr, STACKSIZE, long);
628
629 if (!cctx->sptr) 1002 if (!cctx->sptr)
630 { 1003 {
631 perror ("FATAL: unable to malloc stack for coroutine"); 1004 perror ("FATAL: unable to allocate stack for coroutine");
632 _exit (EXIT_FAILURE); 1005 _exit (EXIT_FAILURE);
633 } 1006 }
634 1007
635#endif 1008 stack_start = cctx->sptr;
1009 stack_size = cctx->ssize;
1010 }
636 1011
637#if USE_VALGRIND 1012 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
638 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1013 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
639 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
640 cctx->ssize + (char *)cctx->sptr
641 );
642#endif
643
644 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
645 1014
646 return cctx; 1015 return cctx;
647} 1016}
648 1017
649static void 1018static void
… …
652 if (!cctx) 1021 if (!cctx)
653 return; 1022 return;
654 1023
655 --cctx_count; 1024 --cctx_count;
656 1025
657#if USE_VALGRIND 1026#if CORO_USE_VALGRIND
658 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1027 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
659#endif 1028#endif
660 1029
661#if HAVE_MMAP 1030#if HAVE_MMAP
1031 if (cctx->flags & CC_MAPPED)
662 munmap (cctx->sptr, cctx->ssize); 1032 munmap (cctx->sptr, cctx->ssize);
1033 else
1034#endif
1035 Safefree (cctx->sptr);
1036
1037 Safefree (cctx);
1038}
1039
1040/* wether this cctx should be destructed */
1041#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1042
1043static coro_cctx *
1044cctx_get (pTHX_ int gimme)
1045{
1046 while (expect_true (cctx_first[gimme]))
1047 {
1048 coro_cctx *cctx = cctx_first[gimme];
1049 cctx_first[gimme] = cctx->next;
1050 --cctx_idle[gimme];
1051
1052 if (expect_true (!CCTX_EXPIRED (cctx)))
1053 return cctx;
1054
1055 cctx_destroy (cctx);
1056 }
1057
1058 assert (!gimme);
1059 return cctx_new ();
1060}
1061
1062static void
1063cctx_put (coro_cctx *cctx, int gimme)
1064{
1065 /* free another cctx if overlimit */
1066 if (expect_false (cctx_idle[gimme] >= MAX_IDLE_CCTX))
1067 {
1068 coro_cctx *first = cctx_first[gimme];
1069 cctx_first[gimme] = first->next;
1070 --cctx_idle[gimme];
1071
1072 cctx_destroy (first);
1073 }
1074
1075 ++cctx_idle[gimme];
1076 cctx->next = cctx_first[gimme];
1077 cctx_first[gimme] = cctx;
1078}
1079
1080/** coroutine switching *****************************************************/
1081
1082static void
1083transfer_check (pTHX_ struct coro *prev, struct coro *next)
1084{
1085 if (expect_true (prev != next))
1086 {
1087 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");
1089
1090 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");
1092
1093 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");
1095
1096 if (
1097#if PERL_VERSION_ATLEAST (5,9,0)
1098 expect_false (PL_parser)
663#else 1099#else
664 Safefree (cctx->sptr); 1100 expect_false (PL_lex_state != LEX_NOTPARSING)
665#endif 1101#endif
666 1102 )
667 Safefree (cctx); 1103 croak ("Coro::State::transfer called while parsing, but this is not supported");
668}
669
670static coro_cctx *
671cctx_get ()
672{
673 coro_cctx *cctx;
674
675 if (cctx_first)
676 {
677 cctx = cctx_first;
678 cctx_first = cctx->next;
679 --cctx_idle;
680 }
681 else
682 {
683 cctx = cctx_new ();
684 PL_op = PL_op->op_next;
685 } 1104 }
686
687 return cctx;
688} 1105}
689 1106
690static void 1107/* always use the TRANSFER macro */
691cctx_put (coro_cctx *cctx)
692{
693 /* free another cctx if overlimit */
694 if (cctx_idle >= MAX_IDLE_CCTX)
695 {
696 coro_cctx *first = cctx_first;
697 cctx_first = first->next;
698 --cctx_idle;
699
700 assert (!first->inuse);
701 cctx_destroy (first);
702 }
703
704 ++cctx_idle;
705 cctx->next = cctx_first;
706 cctx_first = cctx;
707}
708
709/* never call directly, always through the coro_state_transfer global variable */
710static void NOINLINE 1108static void NOINLINE
711transfer (struct coro *prev, struct coro *next) 1109transfer (pTHX_ struct coro *prev, struct coro *next)
712{ 1110{
713 dSTACKLEVEL; 1111 dSTACKLEVEL;
714 1112
715 /* sometimes transfer is only called to set idle_sp */ 1113 /* sometimes transfer is only called to set idle_sp */
716 if (!next) 1114 if (expect_false (!next))
717 { 1115 {
718 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1116 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
719 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1117 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
720 } 1118 }
721 else if (prev != next) 1119 else if (expect_true (prev != next))
722 { 1120 {
723 coro_cctx *prev__cctx; 1121 coro_cctx *prev__cctx;
724 1122
725 if (prev->flags & CF_NEW) 1123 if (expect_false (prev->flags & CF_NEW))
726 { 1124 {
727 /* create a new empty context */ 1125 /* create a new empty context */
728 Newz (0, prev->cctx, 1, coro_cctx); 1126 Newz (0, prev->cctx, 1, coro_cctx);
729 prev->cctx->inuse = 1;
730 prev->flags &= ~CF_NEW; 1127 prev->flags &= ~CF_NEW;
731 prev->flags |= CF_RUNNING; 1128 prev->flags |= CF_RUNNING;
732 } 1129 }
733 1130
734 /*TODO: must not croak here */
735 if (!prev->flags & CF_RUNNING)
736 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
737
738 if (next->flags & CF_RUNNING)
739 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
740
741 if (next->flags & CF_DESTROYED)
742 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
743
744 prev->flags &= ~CF_RUNNING; 1131 prev->flags &= ~CF_RUNNING;
745 next->flags |= CF_RUNNING; 1132 next->flags |= CF_RUNNING;
746 1133
747 LOCK; 1134 LOCK;
748 1135
749 if (next->flags & CF_NEW) 1136 if (expect_false (next->flags & CF_NEW))
750 { 1137 {
751 /* need to start coroutine */ 1138 /* need to start coroutine */
752 next->flags &= ~CF_NEW; 1139 next->flags &= ~CF_NEW;
753 /* first get rid of the old state */ 1140 /* first get rid of the old state */
754 save_perl (prev); 1141 save_perl (aTHX_ prev);
755 /* setup coroutine call */ 1142 /* setup coroutine call */
756 setup_coro (next); 1143 coro_setup (aTHX_ next);
757 /* need a new stack */
758 assert (!next->cctx);
759 } 1144 }
760 else 1145 else
761 { 1146 {
762 /* coroutine already started */ 1147 /* coroutine already started */
763 save_perl (prev); 1148 save_perl (aTHX_ prev);
764 load_perl (next); 1149 load_perl (aTHX_ next);
765 } 1150 }
766 1151
767 prev__cctx = prev->cctx; 1152 prev__cctx = prev->cctx;
768 1153
769 /* possibly "free" the cctx */ 1154 /* possibly "free" the cctx */
770 if (prev__cctx->idle_sp == STACKLEVEL) 1155 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
771 { 1156 {
772 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1157 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
773 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1158 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
774 1159
775 prev->cctx = 0; 1160 prev->cctx = 0;
776 1161
1162 /* 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 */
1164 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1165 if (!next->cctx)
1166 next->cctx = cctx_get (aTHX_ next->gimme);
1167
777 cctx_put (prev__cctx); 1168 cctx_put (prev__cctx, prev->gimme);
778 prev__cctx->inuse = 0;
779 } 1169 }
780 1170
1171 ++next->usecount;
1172
781 if (!next->cctx) 1173 if (expect_true (!next->cctx))
782 {
783 next->cctx = cctx_get (); 1174 next->cctx = cctx_get (aTHX_ next->gimme);
784 assert (!next->cctx->inuse);
785 next->cctx->inuse = 1;
786 }
787 1175
788 if (prev__cctx != next->cctx) 1176 if (expect_false (prev__cctx != next->cctx))
789 { 1177 {
790 prev__cctx->top_env = PL_top_env; 1178 prev__cctx->top_env = PL_top_env;
791 PL_top_env = next->cctx->top_env; 1179 PL_top_env = next->cctx->top_env;
792 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1180 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
793 } 1181 }
794 1182
795 free_coro_mortal (); 1183 free_coro_mortal (aTHX);
796 UNLOCK; 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 }
797 } 1198 }
798} 1199}
799 1200
800struct transfer_args 1201struct transfer_args
801{ 1202{
802 struct coro *prev, *next; 1203 struct coro *prev, *next;
803}; 1204};
804 1205
805#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1206#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
1207#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1208
1209/** high level stuff ********************************************************/
806 1210
807static int 1211static int
808coro_state_destroy (struct coro *coro) 1212coro_state_destroy (pTHX_ struct coro *coro)
809{ 1213{
810 if (coro->flags & CF_DESTROYED) 1214 if (coro->flags & CF_DESTROYED)
811 return 0; 1215 return 0;
812 1216
813 coro->flags |= CF_DESTROYED; 1217 coro->flags |= CF_DESTROYED;
1218
1219 if (coro->flags & CF_READY)
1220 {
1221 /* reduce nready, as destroying a ready coro effectively unreadies it */
1222 /* alternative: look through all ready queues and remove the coro */
1223 LOCK;
1224 --coro_nready;
1225 UNLOCK;
1226 }
1227 else
1228 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
814 1229
815 if (coro->mainstack && coro->mainstack != main_mainstack) 1230 if (coro->mainstack && coro->mainstack != main_mainstack)
816 { 1231 {
817 assert (!(coro->flags & CF_RUNNING));
818
819 struct coro temp; 1232 struct coro temp;
820 Zero (&temp, 1, struct coro);
821 temp.save = CORO_SAVE_ALL;
822 1233
823 if (coro->flags & CF_RUNNING) 1234 if (coro->flags & CF_RUNNING)
824 croak ("FATAL: tried to destroy currently running coroutine"); 1235 croak ("FATAL: tried to destroy currently running coroutine");
825 1236
826 save_perl (&temp); 1237 save_perl (aTHX_ &temp);
827 load_perl (coro); 1238 load_perl (aTHX_ coro);
828 1239
829 coro_destroy_stacks (); 1240 coro_destroy (aTHX_ coro);
830 1241
831 load_perl (&temp); /* this will get rid of defsv etc.. */ 1242 load_perl (aTHX_ &temp);
832 1243
833 coro->mainstack = 0; 1244 coro->slot = 0;
834 } 1245 }
835 1246
836 cctx_destroy (coro->cctx); 1247 cctx_destroy (coro->cctx);
837 SvREFCNT_dec (coro->args); 1248 SvREFCNT_dec (coro->args);
838 1249
1250 if (coro->next) coro->next->prev = coro->prev;
1251 if (coro->prev) coro->prev->next = coro->next;
1252 if (coro == coro_first) coro_first = coro->next;
1253
839 return 1; 1254 return 1;
840} 1255}
841 1256
842static int 1257static int
843coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1258coro_state_free (pTHX_ SV *sv, MAGIC *mg)
844{ 1259{
845 struct coro *coro = (struct coro *)mg->mg_ptr; 1260 struct coro *coro = (struct coro *)mg->mg_ptr;
846 mg->mg_ptr = 0; 1261 mg->mg_ptr = 0;
847 1262
1263 coro->hv = 0;
1264
848 if (--coro->refcnt < 0) 1265 if (--coro->refcnt < 0)
849 { 1266 {
850 coro_state_destroy (coro); 1267 coro_state_destroy (aTHX_ coro);
851 Safefree (coro); 1268 Safefree (coro);
852 } 1269 }
853 1270
854 return 0; 1271 return 0;
855} 1272}
… …
873#else 1290#else
874# define MGf_DUP 0 1291# define MGf_DUP 0
875#endif 1292#endif
876}; 1293};
877 1294
878static struct coro *
879SvSTATE (SV *coro)
880{
881 HV *stash;
882 MAGIC *mg;
883
884 if (SvROK (coro))
885 coro = SvRV (coro);
886
887 stash = SvSTASH (coro);
888 if (stash != coro_stash && stash != coro_state_stash)
889 {
890 /* very slow, but rare, check */
891 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
892 croak ("Coro::State object required");
893 }
894
895 mg = SvMAGIC (coro);
896 assert (mg->mg_type == PERL_MAGIC_ext);
897 return (struct coro *)mg->mg_ptr;
898}
899
900static void 1295static void
901prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1296prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
902{ 1297{
903 ta->prev = SvSTATE (prev_sv); 1298 ta->prev = SvSTATE (prev_sv);
904 ta->next = SvSTATE (next_sv); 1299 ta->next = SvSTATE (next_sv);
1300 TRANSFER_CHECK (*ta);
905} 1301}
906 1302
907static void 1303static void
908api_transfer (SV *prev_sv, SV *next_sv) 1304api_transfer (SV *prev_sv, SV *next_sv)
909{ 1305{
1306 dTHX;
910 struct transfer_args ta; 1307 struct transfer_args ta;
911 1308
912 prepare_transfer (&ta, prev_sv, next_sv); 1309 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
913 TRANSFER (ta); 1310 TRANSFER (ta);
914} 1311}
915 1312
916static int
917api_save (SV *coro_sv, int new_save)
918{
919 struct coro *coro = SvSTATE (coro_sv);
920 int old_save = coro->save;
921
922 if (new_save >= 0)
923 coro->save = new_save;
924
925 return old_save;
926}
927
928/** Coro ********************************************************************/ 1313/** Coro ********************************************************************/
929 1314
930#define PRIO_MAX 3
931#define PRIO_HIGH 1
932#define PRIO_NORMAL 0
933#define PRIO_LOW -1
934#define PRIO_IDLE -3
935#define PRIO_MIN -4
936
937/* for Coro.pm */
938static SV *coro_current;
939static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
940static int coro_nready;
941
942static void 1315static void
943coro_enq (SV *coro_sv) 1316coro_enq (pTHX_ SV *coro_sv)
944{ 1317{
945 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1318 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
946 coro_nready++;
947} 1319}
948 1320
949static SV * 1321static SV *
950coro_deq (int min_prio) 1322coro_deq (pTHX_ int min_prio)
951{ 1323{
952 int prio = PRIO_MAX - PRIO_MIN; 1324 int prio = PRIO_MAX - PRIO_MIN;
953 1325
954 min_prio -= PRIO_MIN; 1326 min_prio -= PRIO_MIN;
955 if (min_prio < 0) 1327 if (min_prio < 0)
956 min_prio = 0; 1328 min_prio = 0;
957 1329
958 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1330 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
959 if (AvFILLp (coro_ready [prio]) >= 0) 1331 if (AvFILLp (coro_ready [prio]) >= 0)
960 {
961 coro_nready--;
962 return av_shift (coro_ready [prio]); 1332 return av_shift (coro_ready [prio]);
963 }
964 1333
965 return 0; 1334 return 0;
966} 1335}
967 1336
968static int 1337static int
969api_ready (SV *coro_sv) 1338api_ready (SV *coro_sv)
970{ 1339{
1340 dTHX;
971 struct coro *coro; 1341 struct coro *coro;
972 1342
973 if (SvROK (coro_sv)) 1343 if (SvROK (coro_sv))
974 coro_sv = SvRV (coro_sv); 1344 coro_sv = SvRV (coro_sv);
975 1345
… …
979 return 0; 1349 return 0;
980 1350
981 coro->flags |= CF_READY; 1351 coro->flags |= CF_READY;
982 1352
983 LOCK; 1353 LOCK;
984 coro_enq (SvREFCNT_inc (coro_sv)); 1354 coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1355 ++coro_nready;
985 UNLOCK; 1356 UNLOCK;
986 1357
987 return 1; 1358 return 1;
988} 1359}
989 1360
990static int 1361static int
991api_is_ready (SV *coro_sv) 1362api_is_ready (SV *coro_sv)
992{ 1363{
1364 dTHX;
993 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1365 return !!(SvSTATE (coro_sv)->flags & CF_READY);
994} 1366}
995 1367
996static void 1368static void
997prepare_schedule (struct transfer_args *ta) 1369prepare_schedule (pTHX_ struct transfer_args *ta)
998{ 1370{
999 SV *prev_sv, *next_sv; 1371 SV *prev_sv, *next_sv;
1000 1372
1001 for (;;) 1373 for (;;)
1002 { 1374 {
1003 LOCK; 1375 LOCK;
1004 next_sv = coro_deq (PRIO_MIN); 1376 next_sv = coro_deq (aTHX_ PRIO_MIN);
1005 UNLOCK;
1006 1377
1007 /* nothing to schedule: call the idle handler */ 1378 /* nothing to schedule: call the idle handler */
1008 if (!next_sv) 1379 if (expect_false (!next_sv))
1009 { 1380 {
1010 dSP; 1381 dSP;
1382 UNLOCK;
1011 1383
1012 ENTER; 1384 ENTER;
1013 SAVETMPS; 1385 SAVETMPS;
1014 1386
1015 PUSHMARK (SP); 1387 PUSHMARK (SP);
… …
1022 } 1394 }
1023 1395
1024 ta->next = SvSTATE (next_sv); 1396 ta->next = SvSTATE (next_sv);
1025 1397
1026 /* cannot transfer to destroyed coros, skip and look for next */ 1398 /* cannot transfer to destroyed coros, skip and look for next */
1027 if (ta->next->flags & CF_DESTROYED) 1399 if (expect_false (ta->next->flags & CF_DESTROYED))
1028 { 1400 {
1401 UNLOCK;
1029 SvREFCNT_dec (next_sv); 1402 SvREFCNT_dec (next_sv);
1403 /* coro_nready is already taken care of by destroy */
1030 continue; 1404 continue;
1031 } 1405 }
1032 1406
1407 --coro_nready;
1408 UNLOCK;
1033 break; 1409 break;
1034 } 1410 }
1035 1411
1036 /* free this only after the transfer */ 1412 /* free this only after the transfer */
1037 prev_sv = SvRV (coro_current); 1413 prev_sv = SvRV (coro_current);
1038 SvRV_set (coro_current, next_sv);
1039 ta->prev = SvSTATE (prev_sv); 1414 ta->prev = SvSTATE (prev_sv);
1040 1415 TRANSFER_CHECK (*ta);
1041 assert (ta->next->flags & CF_READY); 1416 assert (ta->next->flags & CF_READY);
1042 ta->next->flags &= ~CF_READY; 1417 ta->next->flags &= ~CF_READY;
1418 SvRV_set (coro_current, next_sv);
1043 1419
1044 LOCK; 1420 LOCK;
1045 free_coro_mortal (); 1421 free_coro_mortal (aTHX);
1046 coro_mortal = prev_sv; 1422 coro_mortal = prev_sv;
1047 UNLOCK; 1423 UNLOCK;
1048} 1424}
1049 1425
1050static void 1426static void
1051prepare_cede (struct transfer_args *ta) 1427prepare_cede (pTHX_ struct transfer_args *ta)
1052{ 1428{
1053 api_ready (coro_current); 1429 api_ready (coro_current);
1054 prepare_schedule (ta); 1430 prepare_schedule (aTHX_ ta);
1055} 1431}
1056 1432
1057static int 1433static int
1058prepare_cede_notself (struct transfer_args *ta) 1434prepare_cede_notself (pTHX_ struct transfer_args *ta)
1059{ 1435{
1060 if (coro_nready) 1436 if (coro_nready)
1061 { 1437 {
1062 SV *prev = SvRV (coro_current); 1438 SV *prev = SvRV (coro_current);
1063 prepare_schedule (ta); 1439 prepare_schedule (aTHX_ ta);
1064 api_ready (prev); 1440 api_ready (prev);
1065 return 1; 1441 return 1;
1066 } 1442 }
1067 else 1443 else
1068 return 0; 1444 return 0;
1069} 1445}
1070 1446
1071static void 1447static void
1072api_schedule (void) 1448api_schedule (void)
1073{ 1449{
1450 dTHX;
1074 struct transfer_args ta; 1451 struct transfer_args ta;
1075 1452
1076 prepare_schedule (&ta); 1453 prepare_schedule (aTHX_ &ta);
1077 TRANSFER (ta); 1454 TRANSFER (ta);
1078} 1455}
1079 1456
1080static int 1457static int
1081api_cede (void) 1458api_cede (void)
1082{ 1459{
1460 dTHX;
1083 struct transfer_args ta; 1461 struct transfer_args ta;
1084 1462
1085 prepare_cede (&ta); 1463 prepare_cede (aTHX_ &ta);
1086 1464
1087 if (ta.prev != ta.next) 1465 if (expect_true (ta.prev != ta.next))
1088 { 1466 {
1089 TRANSFER (ta); 1467 TRANSFER (ta);
1090 return 1; 1468 return 1;
1091 } 1469 }
1092 else 1470 else
… …
1094} 1472}
1095 1473
1096static int 1474static int
1097api_cede_notself (void) 1475api_cede_notself (void)
1098{ 1476{
1477 dTHX;
1099 struct transfer_args ta; 1478 struct transfer_args ta;
1100 1479
1101 if (prepare_cede_notself (&ta)) 1480 if (prepare_cede_notself (aTHX_ &ta))
1102 { 1481 {
1103 TRANSFER (ta); 1482 TRANSFER (ta);
1104 return 1; 1483 return 1;
1105 } 1484 }
1106 else 1485 else
1107 return 0; 1486 return 0;
1108} 1487}
1109 1488
1489static void
1490api_trace (SV *coro_sv, int flags)
1491{
1492 dTHX;
1493 struct coro *coro = SvSTATE (coro_sv);
1494
1495 if (flags & CC_TRACE)
1496 {
1497 if (!coro->cctx)
1498 coro->cctx = cctx_new ();
1499 else if (!(coro->cctx->flags & CC_TRACE))
1500 croak ("cannot enable tracing on coroutine with custom stack");
1501
1502 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1503 }
1504 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1505 {
1506 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1507
1508 if (coro->flags & CF_RUNNING)
1509 PL_runops = RUNOPS_DEFAULT;
1510 else
1511 coro->slot->runops = RUNOPS_DEFAULT;
1512 }
1513}
1514
1110MODULE = Coro::State PACKAGE = Coro::State 1515MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1111 1516
1112PROTOTYPES: DISABLE 1517PROTOTYPES: DISABLE
1113 1518
1114BOOT: 1519BOOT:
1115{ 1520{
1116#ifdef USE_ITHREADS 1521#ifdef USE_ITHREADS
1117 MUTEX_INIT (&coro_mutex); 1522 MUTEX_INIT (&coro_mutex);
1118#endif 1523#endif
1119 BOOT_PAGESIZE; 1524 BOOT_PAGESIZE;
1120 1525
1526 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1527 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1528
1529 hv_sig = coro_get_hv ("SIG", TRUE);
1530 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
1531 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
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
1121 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1536 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1122 1537
1538 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1539 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1123 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1540 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1124 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1125 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1126 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1127 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1541 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1128 1542
1129 main_mainstack = PL_mainstack; 1543 main_mainstack = PL_mainstack;
1544 main_top_env = PL_top_env;
1545
1546 while (main_top_env->je_prev)
1547 main_top_env = main_top_env->je_prev;
1130 1548
1131 coroapi.ver = CORO_API_VERSION; 1549 coroapi.ver = CORO_API_VERSION;
1550 coroapi.rev = CORO_API_REVISION;
1132 coroapi.transfer = api_transfer; 1551 coroapi.transfer = api_transfer;
1133 1552
1134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1553 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1135} 1554}
1136 1555
… …
1141 struct coro *coro; 1560 struct coro *coro;
1142 HV *hv; 1561 HV *hv;
1143 int i; 1562 int i;
1144 1563
1145 Newz (0, coro, 1, struct coro); 1564 Newz (0, coro, 1, struct coro);
1146 coro->args = newAV (); 1565 coro->args = newAV ();
1147 coro->save = CORO_SAVE_ALL;
1148 coro->flags = CF_NEW; 1566 coro->flags = CF_NEW;
1149 1567
1568 if (coro_first) coro_first->prev = coro;
1569 coro->next = coro_first;
1570 coro_first = coro;
1571
1150 hv = newHV (); 1572 coro->hv = hv = newHV ();
1151 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1573 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1152 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1574 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1153 1575
1576 av_extend (coro->args, items - 1);
1154 for (i = 1; i < items; i++) 1577 for (i = 1; i < items; i++)
1155 av_push (coro->args, newSVsv (ST (i))); 1578 av_push (coro->args, newSVsv (ST (i)));
1156} 1579}
1157 OUTPUT: 1580 OUTPUT:
1158 RETVAL 1581 RETVAL
1159 1582
1160int 1583# these not obviously related functions are all rolled into the same xs
1161save (SV *coro, int new_save = -1) 1584# function to increase chances that they all will call transfer with the same
1162 CODE: 1585# stack offset
1163 RETVAL = api_save (coro, new_save);
1164 OUTPUT:
1165 RETVAL
1166
1167void 1586void
1168_set_stacklevel (...) 1587_set_stacklevel (...)
1169 ALIAS: 1588 ALIAS:
1170 Coro::State::transfer = 1 1589 Coro::State::transfer = 1
1171 Coro::schedule = 2 1590 Coro::schedule = 2
… …
1184 1603
1185 case 1: 1604 case 1:
1186 if (items != 2) 1605 if (items != 2)
1187 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1606 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1188 1607
1189 prepare_transfer (&ta, ST (0), ST (1)); 1608 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1190 break; 1609 break;
1191 1610
1192 case 2: 1611 case 2:
1193 prepare_schedule (&ta); 1612 prepare_schedule (aTHX_ &ta);
1194 break; 1613 break;
1195 1614
1196 case 3: 1615 case 3:
1197 prepare_cede (&ta); 1616 prepare_cede (aTHX_ &ta);
1198 break; 1617 break;
1199 1618
1200 case 4: 1619 case 4:
1201 if (!prepare_cede_notself (&ta)) 1620 if (!prepare_cede_notself (aTHX_ &ta))
1202 XSRETURN_EMPTY; 1621 XSRETURN_EMPTY;
1203 1622
1204 break; 1623 break;
1205 } 1624 }
1206 1625
1207 BARRIER; 1626 BARRIER;
1627 PUTBACK;
1208 TRANSFER (ta); 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 */
1209} 1631}
1210 1632
1211bool 1633bool
1212_destroy (SV *coro_sv) 1634_destroy (SV *coro_sv)
1213 CODE: 1635 CODE:
1214 RETVAL = coro_state_destroy (SvSTATE (coro_sv)); 1636 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1215 OUTPUT: 1637 OUTPUT:
1216 RETVAL 1638 RETVAL
1217 1639
1218void 1640void
1219_exit (code) 1641_exit (code)
… …
1221 PROTOTYPE: $ 1643 PROTOTYPE: $
1222 CODE: 1644 CODE:
1223 _exit (code); 1645 _exit (code);
1224 1646
1225int 1647int
1648cctx_stacksize (int new_stacksize = 0)
1649 CODE:
1650 RETVAL = coro_stacksize;
1651 if (new_stacksize)
1652 coro_stacksize = new_stacksize;
1653 OUTPUT:
1654 RETVAL
1655
1656int
1226cctx_count () 1657cctx_count ()
1227 CODE: 1658 CODE:
1228 RETVAL = cctx_count; 1659 RETVAL = cctx_count;
1229 OUTPUT: 1660 OUTPUT:
1230 RETVAL 1661 RETVAL
1231 1662
1232int 1663int
1233cctx_idle () 1664cctx_idle ()
1234 CODE: 1665 CODE:
1235 RETVAL = cctx_idle; 1666 RETVAL = cctx_idle[0] + cctx_idle[1] + cctx_idle[2];
1236 OUTPUT: 1667 OUTPUT:
1237 RETVAL 1668 RETVAL
1238 1669
1670void
1671list ()
1672 PPCODE:
1673{
1674 struct coro *coro;
1675 for (coro = coro_first; coro; coro = coro->next)
1676 if (coro->hv)
1677 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1678}
1679
1680void
1681call (Coro::State coro, SV *coderef)
1682 ALIAS:
1683 eval = 1
1684 CODE:
1685{
1686 if (coro->mainstack)
1687 {
1688 struct coro temp;
1689
1690 if (!(coro->flags & CF_RUNNING))
1691 {
1692 save_perl (aTHX_ &temp);
1693 load_perl (aTHX_ coro);
1694 }
1695
1696 {
1697 dSP;
1698 ENTER;
1699 SAVETMPS;
1700 PUTBACK;
1701 PUSHSTACK;
1702 PUSHMARK (SP);
1703
1704 if (ix)
1705 eval_sv (coderef, 0);
1706 else
1707 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1708
1709 POPSTACK;
1710 FREETMPS;
1711 LEAVE;
1712 PUTBACK;
1713 }
1714
1715 if (!(coro->flags & CF_RUNNING))
1716 {
1717 save_perl (aTHX_ coro);
1718 load_perl (aTHX_ &temp);
1719 }
1720 }
1721}
1722
1723SV *
1724is_ready (Coro::State coro)
1725 PROTOTYPE: $
1726 ALIAS:
1727 is_ready = CF_READY
1728 is_running = CF_RUNNING
1729 is_new = CF_NEW
1730 is_destroyed = CF_DESTROYED
1731 CODE:
1732 RETVAL = boolSV (coro->flags & ix);
1733 OUTPUT:
1734 RETVAL
1735
1736void
1737api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1738
1739SV *
1740has_stack (Coro::State coro)
1741 PROTOTYPE: $
1742 CODE:
1743 RETVAL = boolSV (!!coro->cctx);
1744 OUTPUT:
1745 RETVAL
1746
1747int
1748is_traced (Coro::State coro)
1749 PROTOTYPE: $
1750 CODE:
1751 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1752 OUTPUT:
1753 RETVAL
1754
1755IV
1756rss (Coro::State coro)
1757 PROTOTYPE: $
1758 ALIAS:
1759 usecount = 1
1760 CODE:
1761 switch (ix)
1762 {
1763 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1764 case 1: RETVAL = coro->usecount; break;
1765 }
1766 OUTPUT:
1767 RETVAL
1768
1769
1239MODULE = Coro::State PACKAGE = Coro 1770MODULE = Coro::State PACKAGE = Coro
1240 1771
1241BOOT: 1772BOOT:
1242{ 1773{
1243 int i; 1774 int i;
1244 1775
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);
1779
1780 coro_current = coro_get_sv ("Coro::current", FALSE);
1781 SvREADONLY_on (coro_current);
1782
1245 coro_stash = gv_stashpv ("Coro", TRUE); 1783 coro_stash = gv_stashpv ("Coro", TRUE);
1246 1784
1247 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1785 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1248 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1786 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1249 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1787 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1250 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1788 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1251 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1789 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1252 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1790 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1253 1791
1254 coro_current = get_sv ("Coro::current", FALSE);
1255 SvREADONLY_on (coro_current);
1256
1257 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1792 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1258 coro_ready[i] = newAV (); 1793 coro_ready[i] = newAV ();
1259 1794
1260 { 1795 {
1261 SV *sv = perl_get_sv("Coro::API", 1); 1796 SV *sv = perl_get_sv ("Coro::API", TRUE);
1797 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1262 1798
1263 coroapi.schedule = api_schedule; 1799 coroapi.schedule = api_schedule;
1264 coroapi.save = api_save;
1265 coroapi.cede = api_cede; 1800 coroapi.cede = api_cede;
1266 coroapi.cede_notself = api_cede_notself; 1801 coroapi.cede_notself = api_cede_notself;
1267 coroapi.ready = api_ready; 1802 coroapi.ready = api_ready;
1268 coroapi.is_ready = api_is_ready; 1803 coroapi.is_ready = api_is_ready;
1269 coroapi.nready = &coro_nready; 1804 coroapi.nready = &coro_nready;
… …
1310 CODE: 1845 CODE:
1311 RETVAL = boolSV (api_ready (self)); 1846 RETVAL = boolSV (api_ready (self));
1312 OUTPUT: 1847 OUTPUT:
1313 RETVAL 1848 RETVAL
1314 1849
1315SV *
1316is_ready (SV *self)
1317 PROTOTYPE: $
1318 CODE:
1319 RETVAL = boolSV (api_is_ready (self));
1320 OUTPUT:
1321 RETVAL
1322
1323int 1850int
1324nready (...) 1851nready (...)
1325 PROTOTYPE: 1852 PROTOTYPE:
1326 CODE: 1853 CODE:
1327 RETVAL = coro_nready; 1854 RETVAL = coro_nready;
1328 OUTPUT: 1855 OUTPUT:
1329 RETVAL 1856 RETVAL
1330 1857
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
1866void
1867_pool_1 (SV *cb)
1868 CODE:
1869{
1870 struct coro *coro = SvSTATE (coro_current);
1871 HV *hv = (HV *)SvRV (coro_current);
1872 AV *defav = GvAV (PL_defgv);
1873 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
1874 AV *invoke_av;
1875 int i, len;
1876
1877 if (!invoke)
1878 croak ("\3async_pool terminate\2\n");
1879
1880 SvREFCNT_dec (coro->saved_deffh);
1881 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1882
1883 hv_store (hv, "desc", sizeof ("desc") - 1,
1884 newSVpvn (strpair ("[async_pool]")), 0);
1885
1886 invoke_av = (AV *)SvRV (invoke);
1887 len = av_len (invoke_av);
1888
1889 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1890
1891 if (len > 0)
1892 {
1893 av_fill (defav, len - 1);
1894 for (i = 0; i < len; ++i)
1895 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1896 }
1897
1898 SvREFCNT_dec (invoke);
1899}
1900
1901void
1902_pool_2 (SV *cb)
1903 CODE:
1904{
1905 struct coro *coro = SvSTATE (coro_current);
1906
1907 sv_setsv (cb, &PL_sv_undef);
1908
1909 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1910 coro->saved_deffh = 0;
1911
1912 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1913 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1914 croak ("\3async_pool terminate\2\n");
1915
1916 av_clear (GvAV (PL_defgv));
1917 hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
1918 newSVpvn (strpair ("[async_pool idle]")), 0);
1919
1920 coro->prio = 0;
1921
1922 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1923 api_trace (coro_current, 0);
1924
1925 av_push (av_async_pool, newSVsv (coro_current));
1926}
1927
1928
1331MODULE = Coro::State PACKAGE = Coro::AIO 1929MODULE = Coro::State PACKAGE = Coro::AIO
1332 1930
1333SV * 1931SV *
1334_get_state () 1932_get_state ()
1335 CODE: 1933 CODE:

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