ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.133 by root, Thu Jan 4 20:14:19 2007 UTC vs.
Revision 1.211 by root, Wed Oct 10 03:37:58 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
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
130static struct coro_cctx *cctx_first; 166static struct coro_cctx *cctx_first;
131static int cctx_count, cctx_idle; 167static int cctx_count, cctx_idle;
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;
165 222
223 /* process data */
224 AV *mainstack;
225 perl_slots *slot; /* basically the saved sp */
226
166 /* data associated with this coroutine (initial args) */ 227 AV *args; /* data associated with this coroutine (initial args) */
167 AV *args; 228 int refcnt; /* coroutines are refcounted, yes */
168 int refcnt;
169 int save; /* CORO_SAVE flags */
170 int flags; /* CF_ flags */ 229 int flags; /* CF_ flags */
230 HV *hv; /* the perl hash associated with this coro, if any */
171 231
172 /* optionally saved, might be zero */ 232 /* statistics */
173 AV *defav; /* @_ */ 233 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
182 234
183 /* coro process data */ 235 /* coro process data */
184 int prio; 236 int prio;
237 SV *throw; /* exception to be thrown */
238
239 /* async_pool */
240 SV *saved_deffh;
241
242 /* linked list */
243 struct coro *next, *prev;
185}; 244};
186 245
187typedef struct coro *Coro__State; 246typedef struct coro *Coro__State;
188typedef struct coro *Coro__State_or_hashref; 247typedef struct coro *Coro__State_or_hashref;
189 248
249/** Coro ********************************************************************/
250
251#define PRIO_MAX 3
252#define PRIO_HIGH 1
253#define PRIO_NORMAL 0
254#define PRIO_LOW -1
255#define PRIO_IDLE -3
256#define PRIO_MIN -4
257
258/* for Coro.pm */
259static SV *coro_current;
260static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
261static int coro_nready;
262static struct coro *coro_first;
263
264/** lowlevel stuff **********************************************************/
265
266static SV *
267coro_get_sv (const char *name, int create)
268{
269#if PERL_VERSION_ATLEAST (5,9,0)
270 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
271 get_sv (name, create);
272#endif
273 return get_sv (name, create);
274}
275
190static AV * 276static AV *
277coro_get_av (const char *name, int create)
278{
279#if PERL_VERSION_ATLEAST (5,9,0)
280 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
281 get_av (name, create);
282#endif
283 return get_av (name, create);
284}
285
286static HV *
287coro_get_hv (const char *name, int create)
288{
289#if PERL_VERSION_ATLEAST (5,9,0)
290 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
291 get_hv (name, create);
292#endif
293 return get_hv (name, create);
294}
295
296static AV *
191coro_clone_padlist (CV *cv) 297coro_clone_padlist (pTHX_ CV *cv)
192{ 298{
193 AV *padlist = CvPADLIST (cv); 299 AV *padlist = CvPADLIST (cv);
194 AV *newpadlist, *newpad; 300 AV *newpadlist, *newpad;
195 301
196 newpadlist = newAV (); 302 newpadlist = newAV ();
… …
208 314
209 return newpadlist; 315 return newpadlist;
210} 316}
211 317
212static void 318static void
213free_padlist (AV *padlist) 319free_padlist (pTHX_ AV *padlist)
214{ 320{
215 /* may be during global destruction */ 321 /* may be during global destruction */
216 if (SvREFCNT (padlist)) 322 if (SvREFCNT (padlist))
217 { 323 {
218 I32 i = AvFILLp (padlist); 324 I32 i = AvFILLp (padlist);
… …
239 AV *padlist; 345 AV *padlist;
240 AV *av = (AV *)mg->mg_obj; 346 AV *av = (AV *)mg->mg_obj;
241 347
242 /* casting is fun. */ 348 /* casting is fun. */
243 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 349 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
244 free_padlist (padlist); 350 free_padlist (aTHX_ padlist);
245 351
246 SvREFCNT_dec (av); 352 SvREFCNT_dec (av);
247 353
248 return 0; 354 return 0;
249} 355}
… …
257 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 363 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
258 ? SvMAGIC (cv) \ 364 ? SvMAGIC (cv) \
259 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 365 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
260 : 0 366 : 0
261 367
368static struct coro *
369SvSTATE_ (pTHX_ SV *coro)
370{
371 HV *stash;
372 MAGIC *mg;
373
374 if (SvROK (coro))
375 coro = SvRV (coro);
376
377 if (expect_false (SvTYPE (coro) != SVt_PVHV))
378 croak ("Coro::State object required");
379
380 stash = SvSTASH (coro);
381 if (expect_false (stash != coro_stash && stash != coro_state_stash))
382 {
383 /* very slow, but rare, check */
384 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
385 croak ("Coro::State object required");
386 }
387
388 mg = CORO_MAGIC (coro);
389 return (struct coro *)mg->mg_ptr;
390}
391
392#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
393
262/* the next two functions merely cache the padlists */ 394/* the next two functions merely cache the padlists */
263static void 395static void
264get_padlist (CV *cv) 396get_padlist (pTHX_ CV *cv)
265{ 397{
266 MAGIC *mg = CORO_MAGIC (cv); 398 MAGIC *mg = CORO_MAGIC (cv);
267 AV *av; 399 AV *av;
268 400
269 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 401 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
270 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 402 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
271 else 403 else
272 { 404 {
273#if PREFER_PERL_FUNCTIONS 405#if CORO_PREFER_PERL_FUNCTIONS
274 /* this is probably cleaner, but also slower? */ 406 /* this is probably cleaner, but also slower? */
275 CV *cp = Perl_cv_clone (cv); 407 CV *cp = Perl_cv_clone (cv);
276 CvPADLIST (cv) = CvPADLIST (cp); 408 CvPADLIST (cv) = CvPADLIST (cp);
277 CvPADLIST (cp) = 0; 409 CvPADLIST (cp) = 0;
278 SvREFCNT_dec (cp); 410 SvREFCNT_dec (cp);
279#else 411#else
280 CvPADLIST (cv) = coro_clone_padlist (cv); 412 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
281#endif 413#endif
282 } 414 }
283} 415}
284 416
285static void 417static void
286put_padlist (CV *cv) 418put_padlist (pTHX_ CV *cv)
287{ 419{
288 MAGIC *mg = CORO_MAGIC (cv); 420 MAGIC *mg = CORO_MAGIC (cv);
289 AV *av; 421 AV *av;
290 422
291 if (!mg) 423 if (expect_false (!mg))
292 { 424 {
293 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); 425 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
294 mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 426 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
295 mg->mg_virtual = &vtbl_coro; 427 mg->mg_virtual = &vtbl_coro;
296 mg->mg_obj = (SV *)newAV (); 428 mg->mg_obj = (SV *)newAV ();
297 } 429 }
298 430
299 av = (AV *)mg->mg_obj; 431 av = (AV *)mg->mg_obj;
300 432
301 if (AvFILLp (av) >= AvMAX (av)) 433 if (expect_false (AvFILLp (av) >= AvMAX (av)))
302 av_extend (av, AvMAX (av) + 1); 434 av_extend (av, AvMAX (av) + 1);
303 435
304 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 436 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
305} 437}
306 438
307#define SB do { 439/** load & save, init *******************************************************/
308#define SE } while (0)
309 440
310#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
311
312static void 441static void
313load_perl (Coro__State c) 442load_perl (pTHX_ Coro__State c)
314{ 443{
444 perl_slots *slot = c->slot;
445 c->slot = 0;
446
447 PL_mainstack = c->mainstack;
448
449 GvSV (PL_defgv) = slot->defsv;
450 GvAV (PL_defgv) = slot->defav;
451 GvSV (PL_errgv) = slot->errsv;
452 GvSV (irsgv) = slot->irsgv;
453
315#define VAR(name,type) PL_ ## name = c->name; 454 #define VAR(name,type) PL_ ## name = slot->name;
316# include "state.h" 455 # include "state.h"
317#undef VAR 456 #undef VAR
318 457
319 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 458 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
320 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 459 /*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 }
333 460
334 { 461 {
335 dSP; 462 dSP;
463
336 CV *cv; 464 CV *cv;
337 465
338 /* now do the ugly restore mess */ 466 /* now do the ugly restore mess */
339 while ((cv = (CV *)POPs)) 467 while (expect_true (cv = (CV *)POPs))
340 { 468 {
341 put_padlist (cv); /* mark this padlist as available */ 469 put_padlist (aTHX_ cv); /* mark this padlist as available */
342 CvDEPTH (cv) = PTR2IV (POPs); 470 CvDEPTH (cv) = PTR2IV (POPs);
343 CvPADLIST (cv) = (AV *)POPs; 471 CvPADLIST (cv) = (AV *)POPs;
344 } 472 }
345 473
346 PUTBACK; 474 PUTBACK;
347 } 475 }
348} 476}
349 477
350static void 478static void
351save_perl (Coro__State c) 479save_perl (pTHX_ Coro__State c)
352{ 480{
353 { 481 {
354 dSP; 482 dSP;
355 I32 cxix = cxstack_ix; 483 I32 cxix = cxstack_ix;
356 PERL_CONTEXT *ccstk = cxstack; 484 PERL_CONTEXT *ccstk = cxstack;
… …
359 /* 487 /*
360 * the worst thing you can imagine happens first - we have to save 488 * the worst thing you can imagine happens first - we have to save
361 * (and reinitialize) all cv's in the whole callchain :( 489 * (and reinitialize) all cv's in the whole callchain :(
362 */ 490 */
363 491
364 EXTEND (SP, 3 + 1);
365 PUSHs (Nullsv); 492 XPUSHs (Nullsv);
366 /* this loop was inspired by pp_caller */ 493 /* this loop was inspired by pp_caller */
367 for (;;) 494 for (;;)
368 { 495 {
369 while (cxix >= 0) 496 while (expect_true (cxix >= 0))
370 { 497 {
371 PERL_CONTEXT *cx = &ccstk[cxix--]; 498 PERL_CONTEXT *cx = &ccstk[cxix--];
372 499
373 if (CxTYPE (cx) == CXt_SUB) 500 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
374 { 501 {
375 CV *cv = cx->blk_sub.cv; 502 CV *cv = cx->blk_sub.cv;
376 503
377 if (CvDEPTH (cv)) 504 if (expect_true (CvDEPTH (cv)))
378 { 505 {
379 EXTEND (SP, 3); 506 EXTEND (SP, 3);
380 PUSHs ((SV *)CvPADLIST (cv)); 507 PUSHs ((SV *)CvPADLIST (cv));
381 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 508 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
382 PUSHs ((SV *)cv); 509 PUSHs ((SV *)cv);
383 510
384 CvDEPTH (cv) = 0; 511 CvDEPTH (cv) = 0;
385 get_padlist (cv); 512 get_padlist (aTHX_ cv);
386 } 513 }
387 } 514 }
388 } 515 }
389 516
390 if (top_si->si_type == PERLSI_MAIN) 517 if (expect_true (top_si->si_type == PERLSI_MAIN))
391 break; 518 break;
392 519
393 top_si = top_si->si_prev; 520 top_si = top_si->si_prev;
394 ccstk = top_si->si_cxstack; 521 ccstk = top_si->si_cxstack;
395 cxix = top_si->si_cxix; 522 cxix = top_si->si_cxix;
396 } 523 }
397 524
398 PUTBACK; 525 PUTBACK;
399 } 526 }
400 527
401 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 528 /* allocate some space on the context stack for our purposes */
402 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 529 /* we manually unroll here, as usually 2 slots is enough */
403 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 530 if (SLOT_COUNT >= 1) CXINC;
404 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 531 if (SLOT_COUNT >= 2) CXINC;
532 if (SLOT_COUNT >= 3) CXINC;
533 {
534 int i;
535 for (i = 3; i < SLOT_COUNT; ++i)
536 CXINC;
537 }
538 cxstack_ix -= SLOT_COUNT; /* undo allocation */
405 539
540 c->mainstack = PL_mainstack;
541
542 {
543 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
544
545 slot->defav = GvAV (PL_defgv);
546 slot->defsv = DEFSV;
547 slot->errsv = ERRSV;
548 slot->irsgv = GvSV (irsgv);
549
406#define VAR(name,type)c->name = PL_ ## name; 550 #define VAR(name,type) slot->name = PL_ ## name;
407# include "state.h" 551 # include "state.h"
408#undef VAR 552 #undef VAR
553 }
409} 554}
410 555
411/* 556/*
412 * allocate various perl stacks. This is an exact copy 557 * allocate various perl stacks. This is an exact copy
413 * of perl.c:init_stacks, except that it uses less memory 558 * of perl.c:init_stacks, except that it uses less memory
414 * on the (sometimes correct) assumption that coroutines do 559 * on the (sometimes correct) assumption that coroutines do
415 * not usually need a lot of stackspace. 560 * not usually need a lot of stackspace.
416 */ 561 */
417#if PREFER_PERL_FUNCTIONS 562#if CORO_PREFER_PERL_FUNCTIONS
418# define coro_init_stacks init_stacks 563# define coro_init_stacks init_stacks
419#else 564#else
420static void 565static void
421coro_init_stacks () 566coro_init_stacks (pTHX)
422{ 567{
423 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 568 PL_curstackinfo = new_stackinfo(32, 8);
424 PL_curstackinfo->si_type = PERLSI_MAIN; 569 PL_curstackinfo->si_type = PERLSI_MAIN;
425 PL_curstack = PL_curstackinfo->si_stack; 570 PL_curstack = PL_curstackinfo->si_stack;
426 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 571 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
427 572
428 PL_stack_base = AvARRAY(PL_curstack); 573 PL_stack_base = AvARRAY(PL_curstack);
429 PL_stack_sp = PL_stack_base; 574 PL_stack_sp = PL_stack_base;
430 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 575 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
431 576
432 New(50,PL_tmps_stack,128,SV*); 577 New(50,PL_tmps_stack,32,SV*);
433 PL_tmps_floor = -1; 578 PL_tmps_floor = -1;
434 PL_tmps_ix = -1; 579 PL_tmps_ix = -1;
435 PL_tmps_max = 128; 580 PL_tmps_max = 32;
436 581
437 New(54,PL_markstack,32,I32); 582 New(54,PL_markstack,16,I32);
438 PL_markstack_ptr = PL_markstack; 583 PL_markstack_ptr = PL_markstack;
439 PL_markstack_max = PL_markstack + 32; 584 PL_markstack_max = PL_markstack + 16;
440 585
441#ifdef SET_MARK_OFFSET 586#ifdef SET_MARK_OFFSET
442 SET_MARK_OFFSET; 587 SET_MARK_OFFSET;
443#endif 588#endif
444 589
445 New(54,PL_scopestack,32,I32); 590 New(54,PL_scopestack,8,I32);
446 PL_scopestack_ix = 0; 591 PL_scopestack_ix = 0;
447 PL_scopestack_max = 32; 592 PL_scopestack_max = 8;
448 593
449 New(54,PL_savestack,64,ANY); 594 New(54,PL_savestack,24,ANY);
450 PL_savestack_ix = 0; 595 PL_savestack_ix = 0;
451 PL_savestack_max = 64; 596 PL_savestack_max = 24;
452 597
453#if !PERL_VERSION_ATLEAST (5,9,0) 598#if !PERL_VERSION_ATLEAST (5,9,0)
454 New(54,PL_retstack,16,OP*); 599 New(54,PL_retstack,4,OP*);
455 PL_retstack_ix = 0; 600 PL_retstack_ix = 0;
456 PL_retstack_max = 16; 601 PL_retstack_max = 4;
457#endif 602#endif
458} 603}
459#endif 604#endif
460 605
461/* 606/*
462 * destroy the stacks, the callchain etc... 607 * destroy the stacks, the callchain etc...
463 */ 608 */
464static void 609static void
465coro_destroy_stacks () 610coro_destroy_stacks (pTHX)
466{ 611{
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 POPSTACK_TO (PL_mainstack);
478 }
479
480 while (PL_curstackinfo->si_next) 612 while (PL_curstackinfo->si_next)
481 PL_curstackinfo = PL_curstackinfo->si_next; 613 PL_curstackinfo = PL_curstackinfo->si_next;
482 614
483 while (PL_curstackinfo) 615 while (PL_curstackinfo)
484 { 616 {
… …
499#if !PERL_VERSION_ATLEAST (5,9,0) 631#if !PERL_VERSION_ATLEAST (5,9,0)
500 Safefree (PL_retstack); 632 Safefree (PL_retstack);
501#endif 633#endif
502} 634}
503 635
504static void 636static size_t
505setup_coro (struct coro *coro) 637coro_rss (pTHX_ struct coro *coro)
638{
639 size_t rss = sizeof (*coro);
640
641 if (coro->mainstack)
642 {
643 perl_slots tmp_slot;
644 perl_slots *slot;
645
646 if (coro->flags & CF_RUNNING)
647 {
648 slot = &tmp_slot;
649
650 #define VAR(name,type) slot->name = PL_ ## name;
651 # include "state.h"
652 #undef VAR
653 }
654 else
655 slot = coro->slot;
656
657 rss += sizeof (slot->curstackinfo);
658 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
659 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
660 rss += slot->tmps_max * sizeof (SV *);
661 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
662 rss += slot->scopestack_max * sizeof (I32);
663 rss += slot->savestack_max * sizeof (ANY);
664
665#if !PERL_VERSION_ATLEAST (5,9,0)
666 rss += slot->retstack_max * sizeof (OP *);
667#endif
668 }
669
670 return rss;
671}
672
673/** coroutine stack handling ************************************************/
674
675static void
676coro_setup (pTHX_ struct coro *coro)
506{ 677{
507 /* 678 /*
508 * emulate part of the perl startup here. 679 * emulate part of the perl startup here.
509 */ 680 */
510
511 coro_init_stacks (); 681 coro_init_stacks (aTHX);
512 682
683 PL_runops = RUNOPS_DEFAULT;
513 PL_curcop = &PL_compiling; 684 PL_curcop = &PL_compiling;
514 PL_in_eval = EVAL_NULL; 685 PL_in_eval = EVAL_NULL;
686 PL_comppad = 0;
515 PL_curpm = 0; 687 PL_curpm = 0;
688 PL_curpad = 0;
516 PL_localizing = 0; 689 PL_localizing = 0;
517 PL_dirty = 0; 690 PL_dirty = 0;
518 PL_restartop = 0; 691 PL_restartop = 0;
692 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
693 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
694
695 GvSV (PL_defgv) = newSV (0);
696 GvAV (PL_defgv) = coro->args; coro->args = 0;
697 GvSV (PL_errgv) = newSV (0);
698 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
699 PL_rs = newSVsv (GvSV (irsgv));
700 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
519 701
520 { 702 {
521 dSP; 703 dSP;
522 LOGOP myop; 704 LOGOP myop;
523 705
524 SvREFCNT_dec (GvAV (PL_defgv));
525 GvAV (PL_defgv) = coro->args; coro->args = 0;
526
527 Zero (&myop, 1, LOGOP); 706 Zero (&myop, 1, LOGOP);
528 myop.op_next = Nullop; 707 myop.op_next = Nullop;
529 myop.op_flags = OPf_WANT_VOID; 708 myop.op_flags = OPf_WANT_VOID;
530 709
531 PUSHMARK (SP); 710 PUSHMARK (SP);
532 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 711 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
533 PUTBACK; 712 PUTBACK;
534 PL_op = (OP *)&myop; 713 PL_op = (OP *)&myop;
535 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 714 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
536 SPAGAIN; 715 SPAGAIN;
537 } 716 }
538 717
539 ENTER; /* necessary e.g. for dounwind */ 718 /* this newly created coroutine might be run on an existing cctx which most
719 * likely was suspended in set_stacklevel, called from entersub.
720 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
721 * so we ENTER here for symmetry
722 */
723 ENTER;
540} 724}
541 725
542static void 726static void
727coro_destroy (pTHX_ struct coro *coro)
728{
729 if (!IN_DESTRUCT)
730 {
731 /* restore all saved variables and stuff */
732 LEAVE_SCOPE (0);
733 assert (PL_tmps_floor == -1);
734
735 /* free all temporaries */
736 FREETMPS;
737 assert (PL_tmps_ix == -1);
738
739 /* unwind all extra stacks */
740 POPSTACK_TO (PL_mainstack);
741
742 /* unwind main stack */
743 dounwind (-1);
744 }
745
746 SvREFCNT_dec (GvSV (PL_defgv));
747 SvREFCNT_dec (GvAV (PL_defgv));
748 SvREFCNT_dec (GvSV (PL_errgv));
749 SvREFCNT_dec (PL_defoutgv);
750 SvREFCNT_dec (PL_rs);
751 SvREFCNT_dec (GvSV (irsgv));
752
753 SvREFCNT_dec (PL_diehook);
754 SvREFCNT_dec (PL_warnhook);
755
756 SvREFCNT_dec (coro->saved_deffh);
757 SvREFCNT_dec (coro->throw);
758
759 coro_destroy_stacks (aTHX);
760}
761
762static void
543free_coro_mortal () 763free_coro_mortal (pTHX)
544{ 764{
545 if (coro_mortal) 765 if (expect_true (coro_mortal))
546 { 766 {
547 SvREFCNT_dec (coro_mortal); 767 SvREFCNT_dec (coro_mortal);
548 coro_mortal = 0; 768 coro_mortal = 0;
549 } 769 }
550} 770}
551 771
772static int
773runops_trace (pTHX)
774{
775 COP *oldcop = 0;
776 int oldcxix = -2;
777 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
778 coro_cctx *cctx = coro->cctx;
779
780 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
781 {
782 PERL_ASYNC_CHECK ();
783
784 if (cctx->flags & CC_TRACE_ALL)
785 {
786 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
787 {
788 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
789 SV **bot, **top;
790 AV *av = newAV (); /* return values */
791 SV **cb;
792 dSP;
793
794 GV *gv = CvGV (cx->blk_sub.cv);
795 SV *fullname = sv_2mortal (newSV (0));
796 if (isGV (gv))
797 gv_efullname3 (fullname, gv, 0);
798
799 bot = PL_stack_base + cx->blk_oldsp + 1;
800 top = cx->blk_gimme == G_ARRAY ? SP + 1
801 : cx->blk_gimme == G_SCALAR ? bot + 1
802 : bot;
803
804 av_extend (av, top - bot);
805 while (bot < top)
806 av_push (av, SvREFCNT_inc (*bot++));
807
808 PL_runops = RUNOPS_DEFAULT;
809 ENTER;
810 SAVETMPS;
811 EXTEND (SP, 3);
812 PUSHMARK (SP);
813 PUSHs (&PL_sv_no);
814 PUSHs (fullname);
815 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
816 PUTBACK;
817 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
818 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
819 SPAGAIN;
820 FREETMPS;
821 LEAVE;
822 PL_runops = runops_trace;
823 }
824
825 if (oldcop != PL_curcop)
826 {
827 oldcop = PL_curcop;
828
829 if (PL_curcop != &PL_compiling)
830 {
831 SV **cb;
832
833 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
834 {
835 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
836
837 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
838 {
839 runops_proc_t old_runops = PL_runops;
840 dSP;
841 GV *gv = CvGV (cx->blk_sub.cv);
842 SV *fullname = sv_2mortal (newSV (0));
843
844 if (isGV (gv))
845 gv_efullname3 (fullname, gv, 0);
846
847 PL_runops = RUNOPS_DEFAULT;
848 ENTER;
849 SAVETMPS;
850 EXTEND (SP, 3);
851 PUSHMARK (SP);
852 PUSHs (&PL_sv_yes);
853 PUSHs (fullname);
854 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
855 PUTBACK;
856 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
857 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
858 SPAGAIN;
859 FREETMPS;
860 LEAVE;
861 PL_runops = runops_trace;
862 }
863
864 oldcxix = cxstack_ix;
865 }
866
867 if (cctx->flags & CC_TRACE_LINE)
868 {
869 dSP;
870
871 PL_runops = RUNOPS_DEFAULT;
872 ENTER;
873 SAVETMPS;
874 EXTEND (SP, 3);
875 PL_runops = RUNOPS_DEFAULT;
876 PUSHMARK (SP);
877 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
878 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
879 PUTBACK;
880 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
881 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
882 SPAGAIN;
883 FREETMPS;
884 LEAVE;
885 PL_runops = runops_trace;
886 }
887 }
888 }
889 }
890 }
891
892 TAINT_NOT;
893 return 0;
894}
895
552/* inject a fake call to Coro::State::_cctx_init into the execution */ 896/* inject a fake call to Coro::State::_cctx_init into the execution */
897/* _cctx_init should be careful, as it could be called at almost any time */
898/* during execution of a perl program */
553static void NOINLINE 899static void NOINLINE
554prepare_cctx (coro_cctx *cctx) 900cctx_prepare (pTHX_ coro_cctx *cctx)
555{ 901{
556 dSP; 902 dSP;
557 LOGOP myop; 903 LOGOP myop;
904
905 PL_top_env = &PL_start_env;
906
907 if (cctx->flags & CC_TRACE)
908 PL_runops = runops_trace;
558 909
559 Zero (&myop, 1, LOGOP); 910 Zero (&myop, 1, LOGOP);
560 myop.op_next = PL_op; 911 myop.op_next = PL_op;
561 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 912 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
562 913
… …
568 PL_op = (OP *)&myop; 919 PL_op = (OP *)&myop;
569 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 920 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
570 SPAGAIN; 921 SPAGAIN;
571} 922}
572 923
924/*
925 * this is a _very_ stripped down perl interpreter ;)
926 */
573static void 927static void
574coro_run (void *arg) 928cctx_run (void *arg)
575{ 929{
930 dTHX;
931
576 /* coro_run is the alternative tail of transfer(), so unlock here. */ 932 /* cctx_run is the alternative tail of transfer(), so unlock here. */
577 UNLOCK; 933 UNLOCK;
578 934
579 /* 935 /* we now skip the entersub that lead to transfer() */
580 * this is a _very_ stripped down perl interpreter ;) 936 PL_op = PL_op->op_next;
581 */
582 PL_top_env = &PL_start_env;
583 937
584 /* inject call to cctx_init */ 938 /* inject a fake subroutine call to cctx_init */
585 prepare_cctx ((coro_cctx *)arg); 939 cctx_prepare (aTHX_ (coro_cctx *)arg);
586 940
587 /* somebody will hit me for both perl_run and PL_restartop */ 941 /* somebody or something will hit me for both perl_run and PL_restartop */
588 PL_restartop = PL_op; 942 PL_restartop = PL_op;
589 perl_run (PL_curinterp); 943 perl_run (PL_curinterp);
590 944
591 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 945 /*
592 abort (); 946 * If perl-run returns we assume exit() was being called or the coro
947 * fell off the end, which seems to be the only valid (non-bug)
948 * reason for perl_run to return. We try to exit by jumping to the
949 * bootstrap-time "top" top_env, as we cannot restore the "main"
950 * coroutine as Coro has no such concept
951 */
952 PL_top_env = main_top_env;
953 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
593} 954}
594 955
595static coro_cctx * 956static coro_cctx *
596cctx_new () 957cctx_new ()
597{ 958{
598 coro_cctx *cctx; 959 coro_cctx *cctx;
960 void *stack_start;
961 size_t stack_size;
599 962
600 ++cctx_count; 963 ++cctx_count;
601 964
602 Newz (0, cctx, 1, coro_cctx); 965 Newz (0, cctx, 1, coro_cctx);
603 966
604#if HAVE_MMAP 967#if HAVE_MMAP
605
606 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 968 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
607 /* mmap supposedly does allocate-on-write for us */ 969 /* mmap supposedly does allocate-on-write for us */
608 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 970 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
609 971
610 if (cctx->sptr == (void *)-1) 972 if (cctx->sptr != (void *)-1)
611 {
612 perror ("FATAL: unable to mmap stack for coroutine");
613 _exit (EXIT_FAILURE);
614 } 973 {
615
616# if STACKGUARD 974# if CORO_STACKGUARD
617 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 975 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
618# endif 976# endif
977 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
978 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
979 cctx->flags |= CC_MAPPED;
980 }
981 else
982#endif
983 {
984 cctx->ssize = coro_stacksize * (long)sizeof (long);
985 New (0, cctx->sptr, coro_stacksize, long);
619 986
620#else
621
622 cctx->ssize = STACKSIZE * (long)sizeof (long);
623 New (0, cctx->sptr, STACKSIZE, long);
624
625 if (!cctx->sptr) 987 if (!cctx->sptr)
626 { 988 {
627 perror ("FATAL: unable to malloc stack for coroutine"); 989 perror ("FATAL: unable to allocate stack for coroutine");
628 _exit (EXIT_FAILURE); 990 _exit (EXIT_FAILURE);
629 } 991 }
630 992
631#endif 993 stack_start = cctx->sptr;
994 stack_size = cctx->ssize;
995 }
632 996
633#if USE_VALGRIND 997 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
634 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 998 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
635 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
636 cctx->ssize + (char *)cctx->sptr
637 );
638#endif
639
640 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
641 999
642 return cctx; 1000 return cctx;
643} 1001}
644 1002
645static void 1003static void
… …
648 if (!cctx) 1006 if (!cctx)
649 return; 1007 return;
650 1008
651 --cctx_count; 1009 --cctx_count;
652 1010
653#if USE_VALGRIND 1011#if CORO_USE_VALGRIND
654 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1012 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
655#endif 1013#endif
656 1014
657#if HAVE_MMAP 1015#if HAVE_MMAP
1016 if (cctx->flags & CC_MAPPED)
658 munmap (cctx->sptr, cctx->ssize); 1017 munmap (cctx->sptr, cctx->ssize);
659#else 1018 else
1019#endif
660 Safefree (cctx->sptr); 1020 Safefree (cctx->sptr);
661#endif
662 1021
663 Safefree (cctx); 1022 Safefree (cctx);
664} 1023}
665 1024
1025/* wether this cctx should be destructed */
1026#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1027
666static coro_cctx * 1028static coro_cctx *
667cctx_get () 1029cctx_get (pTHX)
668{ 1030{
669 coro_cctx *cctx; 1031 while (expect_true (cctx_first))
670
671 if (cctx_first)
672 { 1032 {
673 cctx = cctx_first; 1033 coro_cctx *cctx = cctx_first;
674 cctx_first = cctx->next; 1034 cctx_first = cctx->next;
675 --cctx_idle; 1035 --cctx_idle;
676 } 1036
677 else 1037 if (expect_true (!CCTX_EXPIRED (cctx)))
678 { 1038 return cctx;
679 cctx = cctx_new (); 1039
680 PL_op = PL_op->op_next; 1040 cctx_destroy (cctx);
681 } 1041 }
682 1042
683 return cctx; 1043 return cctx_new ();
684} 1044}
685 1045
686static void 1046static void
687cctx_put (coro_cctx *cctx) 1047cctx_put (coro_cctx *cctx)
688{ 1048{
689 /* free another cctx if overlimit */ 1049 /* free another cctx if overlimit */
690 if (cctx_idle >= MAX_IDLE_CCTX) 1050 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
691 { 1051 {
692 coro_cctx *first = cctx_first; 1052 coro_cctx *first = cctx_first;
693 cctx_first = first->next; 1053 cctx_first = first->next;
694 --cctx_idle; 1054 --cctx_idle;
695 1055
696 assert (!first->inuse);
697 cctx_destroy (first); 1056 cctx_destroy (first);
698 } 1057 }
699 1058
700 ++cctx_idle; 1059 ++cctx_idle;
701 cctx->next = cctx_first; 1060 cctx->next = cctx_first;
702 cctx_first = cctx; 1061 cctx_first = cctx;
703} 1062}
704 1063
705/* never call directly, always through the coro_state_transfer global variable */ 1064/** coroutine switching *****************************************************/
1065
1066static void
1067transfer_check (pTHX_ struct coro *prev, struct coro *next)
1068{
1069 if (expect_true (prev != next))
1070 {
1071 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1072 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1073
1074 if (expect_false (next->flags & CF_RUNNING))
1075 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1076
1077 if (expect_false (next->flags & CF_DESTROYED))
1078 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1079
1080 if (
1081#if PERL_VERSION_ATLEAST (5,9,0)
1082 expect_false (PL_parser)
1083#else
1084 expect_false (PL_lex_state != LEX_NOTPARSING)
1085#endif
1086 )
1087 croak ("Coro::State::transfer called while parsing, but this is not supported");
1088 }
1089}
1090
1091/* always use the TRANSFER macro */
706static void NOINLINE 1092static void NOINLINE
707transfer (struct coro *prev, struct coro *next) 1093transfer (pTHX_ struct coro *prev, struct coro *next)
708{ 1094{
709 dSTACKLEVEL; 1095 dSTACKLEVEL;
710 1096
711 /* sometimes transfer is only called to set idle_sp */ 1097 /* sometimes transfer is only called to set idle_sp */
712 if (!next) 1098 if (expect_false (!next))
713 { 1099 {
714 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1100 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
715 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1101 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
716 } 1102 }
717 else if (prev != next) 1103 else if (expect_true (prev != next))
718 { 1104 {
719 coro_cctx *prev__cctx; 1105 coro_cctx *prev__cctx;
720 1106
721 if (prev->flags & CF_NEW) 1107 if (expect_false (prev->flags & CF_NEW))
722 { 1108 {
723 /* create a new empty context */ 1109 /* create a new empty context */
724 Newz (0, prev->cctx, 1, coro_cctx); 1110 Newz (0, prev->cctx, 1, coro_cctx);
725 prev->cctx->inuse = 1;
726 prev->flags &= ~CF_NEW; 1111 prev->flags &= ~CF_NEW;
727 prev->flags |= CF_RUNNING; 1112 prev->flags |= CF_RUNNING;
728 } 1113 }
729 1114
730 /*TODO: must not croak here */
731 if (!prev->flags & CF_RUNNING)
732 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
733
734 if (next->flags & CF_RUNNING)
735 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
736
737 if (next->flags & CF_DESTROYED)
738 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
739
740 prev->flags &= ~CF_RUNNING; 1115 prev->flags &= ~CF_RUNNING;
741 next->flags |= CF_RUNNING; 1116 next->flags |= CF_RUNNING;
742 1117
743 LOCK; 1118 LOCK;
744 1119
745 if (next->flags & CF_NEW) 1120 if (expect_false (next->flags & CF_NEW))
746 { 1121 {
747 /* need to start coroutine */ 1122 /* need to start coroutine */
748 next->flags &= ~CF_NEW; 1123 next->flags &= ~CF_NEW;
749 /* first get rid of the old state */ 1124 /* first get rid of the old state */
750 save_perl (prev); 1125 save_perl (aTHX_ prev);
751 /* setup coroutine call */ 1126 /* setup coroutine call */
752 setup_coro (next); 1127 coro_setup (aTHX_ next);
753 /* need a new stack */
754 assert (!next->cctx);
755 } 1128 }
756 else 1129 else
757 { 1130 {
758 /* coroutine already started */ 1131 /* coroutine already started */
759 save_perl (prev); 1132 save_perl (aTHX_ prev);
760 load_perl (next); 1133 load_perl (aTHX_ next);
761 } 1134 }
762 1135
763 prev__cctx = prev->cctx; 1136 prev__cctx = prev->cctx;
764 1137
765 /* possibly "free" the cctx */ 1138 /* possibly "free" the cctx */
766 if (prev__cctx->idle_sp == STACKLEVEL) 1139 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
767 { 1140 {
768 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1141 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
769 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1142 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
770 1143
771 prev->cctx = 0; 1144 prev->cctx = 0;
772 1145
1146 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1147 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1148 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1149 if (!next->cctx)
1150 next->cctx = cctx_get (aTHX);
1151
773 cctx_put (prev__cctx); 1152 cctx_put (prev__cctx);
774 prev__cctx->inuse = 0;
775 } 1153 }
776 1154
1155 ++next->usecount;
1156
777 if (!next->cctx) 1157 if (expect_true (!next->cctx))
778 {
779 next->cctx = cctx_get (); 1158 next->cctx = cctx_get (aTHX);
780 assert (!next->cctx->inuse);
781 next->cctx->inuse = 1;
782 }
783 1159
784 if (prev__cctx != next->cctx) 1160 if (expect_false (prev__cctx != next->cctx))
785 { 1161 {
786 prev__cctx->top_env = PL_top_env; 1162 prev__cctx->top_env = PL_top_env;
787 PL_top_env = next->cctx->top_env; 1163 PL_top_env = next->cctx->top_env;
788 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1164 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
789 } 1165 }
790 1166
791 free_coro_mortal (); 1167 free_coro_mortal (aTHX);
792 UNLOCK; 1168 UNLOCK;
1169
1170 if (expect_false (prev->throw || next->throw))
1171 {
1172 struct coro *coro = SvSTATE (coro_current);
1173
1174 if (coro->throw)
1175 {
1176 SV *exception = coro->throw;
1177 coro->throw = 0;
1178 sv_setsv (ERRSV, exception);
1179 croak (0);
1180 }
1181 }
793 } 1182 }
794} 1183}
795 1184
796struct transfer_args 1185struct transfer_args
797{ 1186{
798 struct coro *prev, *next; 1187 struct coro *prev, *next;
799}; 1188};
800 1189
801#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1190#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
1191#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1192
1193/** high level stuff ********************************************************/
802 1194
803static int 1195static int
804coro_state_destroy (struct coro *coro) 1196coro_state_destroy (pTHX_ struct coro *coro)
805{ 1197{
806 if (coro->refcnt--)
807 return 0;
808
809 if (coro->flags & CF_DESTROYED) 1198 if (coro->flags & CF_DESTROYED)
810 return 0; 1199 return 0;
811 1200
812 coro->flags |= CF_DESTROYED; 1201 coro->flags |= CF_DESTROYED;
1202
1203 if (coro->flags & CF_READY)
1204 {
1205 /* reduce nready, as destroying a ready coro effectively unreadies it */
1206 /* alternative: look through all ready queues and remove the coro */
1207 LOCK;
1208 --coro_nready;
1209 UNLOCK;
1210 }
1211 else
1212 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
813 1213
814 if (coro->mainstack && coro->mainstack != main_mainstack) 1214 if (coro->mainstack && coro->mainstack != main_mainstack)
815 { 1215 {
816 assert (!(coro->flags & CF_RUNNING));
817
818 struct coro temp; 1216 struct coro temp;
819 Zero (&temp, 1, struct coro);
820 temp.save = CORO_SAVE_ALL;
821 1217
822 if (coro->flags & CF_RUNNING) 1218 if (coro->flags & CF_RUNNING)
823 croak ("FATAL: tried to destroy currently running coroutine"); 1219 croak ("FATAL: tried to destroy currently running coroutine");
824 1220
825 save_perl (&temp); 1221 save_perl (aTHX_ &temp);
826 load_perl (coro); 1222 load_perl (aTHX_ coro);
827 1223
828 coro_destroy_stacks (); 1224 coro_destroy (aTHX_ coro);
829 1225
830 load_perl (&temp); /* this will get rid of defsv etc.. */ 1226 load_perl (aTHX_ &temp);
831 1227
832 coro->mainstack = 0; 1228 coro->slot = 0;
833 } 1229 }
834 1230
835 cctx_destroy (coro->cctx); 1231 cctx_destroy (coro->cctx);
836 SvREFCNT_dec (coro->args); 1232 SvREFCNT_dec (coro->args);
837 1233
1234 if (coro->next) coro->next->prev = coro->prev;
1235 if (coro->prev) coro->prev->next = coro->next;
1236 if (coro == coro_first) coro_first = coro->next;
1237
838 return 1; 1238 return 1;
839} 1239}
840 1240
841static int 1241static int
842coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1242coro_state_free (pTHX_ SV *sv, MAGIC *mg)
843{ 1243{
844 struct coro *coro = (struct coro *)mg->mg_ptr; 1244 struct coro *coro = (struct coro *)mg->mg_ptr;
845 mg->mg_ptr = 0; 1245 mg->mg_ptr = 0;
846 1246
1247 coro->hv = 0;
1248
1249 if (--coro->refcnt < 0)
1250 {
847 coro_state_destroy (coro); 1251 coro_state_destroy (aTHX_ coro);
848
849 if (!coro->refcnt)
850 Safefree (coro); 1252 Safefree (coro);
1253 }
851 1254
852 return 0; 1255 return 0;
853} 1256}
854 1257
855static int 1258static int
… …
862 return 0; 1265 return 0;
863} 1266}
864 1267
865static MGVTBL coro_state_vtbl = { 1268static MGVTBL coro_state_vtbl = {
866 0, 0, 0, 0, 1269 0, 0, 0, 0,
867 coro_state_clear, 1270 coro_state_free,
868 0, 1271 0,
869#ifdef MGf_DUP 1272#ifdef MGf_DUP
870 coro_state_dup, 1273 coro_state_dup,
871#else 1274#else
872# define MGf_DUP 0 1275# define MGf_DUP 0
873#endif 1276#endif
874}; 1277};
875 1278
876static struct coro *
877SvSTATE (SV *coro)
878{
879 HV *stash;
880 MAGIC *mg;
881
882 if (SvROK (coro))
883 coro = SvRV (coro);
884
885 stash = SvSTASH (coro);
886 if (stash != coro_stash && stash != coro_state_stash)
887 {
888 /* very slow, but rare, check */
889 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
890 croak ("Coro::State object required");
891 }
892
893 mg = SvMAGIC (coro);
894 assert (mg->mg_type == PERL_MAGIC_ext);
895 return (struct coro *)mg->mg_ptr;
896}
897
898static void 1279static void
899prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1280prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
900{ 1281{
901 ta->prev = SvSTATE (prev_sv); 1282 ta->prev = SvSTATE (prev_sv);
902 ta->next = SvSTATE (next_sv); 1283 ta->next = SvSTATE (next_sv);
1284 TRANSFER_CHECK (*ta);
903} 1285}
904 1286
905static void 1287static void
906api_transfer (SV *prev_sv, SV *next_sv) 1288api_transfer (SV *prev_sv, SV *next_sv)
907{ 1289{
1290 dTHX;
908 struct transfer_args ta; 1291 struct transfer_args ta;
909 1292
910 prepare_transfer (&ta, prev_sv, next_sv); 1293 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
911 TRANSFER (ta); 1294 TRANSFER (ta);
912} 1295}
913 1296
914static int
915api_save (SV *coro_sv, int new_save)
916{
917 struct coro *coro = SvSTATE (coro_sv);
918 int old_save = coro->save;
919
920 if (new_save >= 0)
921 coro->save = new_save;
922
923 return old_save;
924}
925
926/** Coro ********************************************************************/ 1297/** Coro ********************************************************************/
927 1298
928#define PRIO_MAX 3
929#define PRIO_HIGH 1
930#define PRIO_NORMAL 0
931#define PRIO_LOW -1
932#define PRIO_IDLE -3
933#define PRIO_MIN -4
934
935/* for Coro.pm */
936static SV *coro_current;
937static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
938static int coro_nready;
939
940static void 1299static void
941coro_enq (SV *coro_sv) 1300coro_enq (pTHX_ SV *coro_sv)
942{ 1301{
943 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1302 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
944 coro_nready++;
945} 1303}
946 1304
947static SV * 1305static SV *
948coro_deq (int min_prio) 1306coro_deq (pTHX_ int min_prio)
949{ 1307{
950 int prio = PRIO_MAX - PRIO_MIN; 1308 int prio = PRIO_MAX - PRIO_MIN;
951 1309
952 min_prio -= PRIO_MIN; 1310 min_prio -= PRIO_MIN;
953 if (min_prio < 0) 1311 if (min_prio < 0)
954 min_prio = 0; 1312 min_prio = 0;
955 1313
956 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1314 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
957 if (AvFILLp (coro_ready [prio]) >= 0) 1315 if (AvFILLp (coro_ready [prio]) >= 0)
958 {
959 coro_nready--;
960 return av_shift (coro_ready [prio]); 1316 return av_shift (coro_ready [prio]);
961 }
962 1317
963 return 0; 1318 return 0;
964} 1319}
965 1320
966static int 1321static int
967api_ready (SV *coro_sv) 1322api_ready (SV *coro_sv)
968{ 1323{
1324 dTHX;
969 struct coro *coro; 1325 struct coro *coro;
970 1326
971 if (SvROK (coro_sv)) 1327 if (SvROK (coro_sv))
972 coro_sv = SvRV (coro_sv); 1328 coro_sv = SvRV (coro_sv);
973 1329
… …
977 return 0; 1333 return 0;
978 1334
979 coro->flags |= CF_READY; 1335 coro->flags |= CF_READY;
980 1336
981 LOCK; 1337 LOCK;
982 coro_enq (SvREFCNT_inc (coro_sv)); 1338 coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1339 ++coro_nready;
983 UNLOCK; 1340 UNLOCK;
984 1341
985 return 1; 1342 return 1;
986} 1343}
987 1344
988static int 1345static int
989api_is_ready (SV *coro_sv) 1346api_is_ready (SV *coro_sv)
990{ 1347{
1348 dTHX;
991 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1349 return !!(SvSTATE (coro_sv)->flags & CF_READY);
992} 1350}
993 1351
994static void 1352static void
995prepare_schedule (struct transfer_args *ta) 1353prepare_schedule (pTHX_ struct transfer_args *ta)
996{ 1354{
997 SV *prev_sv, *next_sv; 1355 SV *prev_sv, *next_sv;
998 1356
999 for (;;) 1357 for (;;)
1000 { 1358 {
1001 LOCK; 1359 LOCK;
1002 next_sv = coro_deq (PRIO_MIN); 1360 next_sv = coro_deq (aTHX_ PRIO_MIN);
1003 UNLOCK;
1004 1361
1005 /* nothing to schedule: call the idle handler */ 1362 /* nothing to schedule: call the idle handler */
1006 if (!next_sv) 1363 if (expect_false (!next_sv))
1007 { 1364 {
1008 dSP; 1365 dSP;
1366 UNLOCK;
1009 1367
1010 ENTER; 1368 ENTER;
1011 SAVETMPS; 1369 SAVETMPS;
1012 1370
1013 PUSHMARK (SP); 1371 PUSHMARK (SP);
… …
1020 } 1378 }
1021 1379
1022 ta->next = SvSTATE (next_sv); 1380 ta->next = SvSTATE (next_sv);
1023 1381
1024 /* cannot transfer to destroyed coros, skip and look for next */ 1382 /* cannot transfer to destroyed coros, skip and look for next */
1025 if (ta->next->flags & CF_DESTROYED) 1383 if (expect_false (ta->next->flags & CF_DESTROYED))
1026 { 1384 {
1385 UNLOCK;
1027 SvREFCNT_dec (next_sv); 1386 SvREFCNT_dec (next_sv);
1387 /* coro_nready is already taken care of by destroy */
1028 continue; 1388 continue;
1029 } 1389 }
1030 1390
1391 --coro_nready;
1392 UNLOCK;
1031 break; 1393 break;
1032 } 1394 }
1033 1395
1034 /* free this only after the transfer */ 1396 /* free this only after the transfer */
1035 prev_sv = SvRV (coro_current); 1397 prev_sv = SvRV (coro_current);
1036 SvRV_set (coro_current, next_sv);
1037 ta->prev = SvSTATE (prev_sv); 1398 ta->prev = SvSTATE (prev_sv);
1038 1399 TRANSFER_CHECK (*ta);
1039 assert (ta->next->flags & CF_READY); 1400 assert (ta->next->flags & CF_READY);
1040 ta->next->flags &= ~CF_READY; 1401 ta->next->flags &= ~CF_READY;
1402 SvRV_set (coro_current, next_sv);
1041 1403
1042 LOCK; 1404 LOCK;
1043 free_coro_mortal (); 1405 free_coro_mortal (aTHX);
1044 coro_mortal = prev_sv; 1406 coro_mortal = prev_sv;
1045 UNLOCK; 1407 UNLOCK;
1046} 1408}
1047 1409
1048static void 1410static void
1049prepare_cede (struct transfer_args *ta) 1411prepare_cede (pTHX_ struct transfer_args *ta)
1050{ 1412{
1051 api_ready (coro_current); 1413 api_ready (coro_current);
1052 prepare_schedule (ta); 1414 prepare_schedule (aTHX_ ta);
1053} 1415}
1054 1416
1055static int 1417static int
1056prepare_cede_notself (struct transfer_args *ta) 1418prepare_cede_notself (pTHX_ struct transfer_args *ta)
1057{ 1419{
1058 if (coro_nready) 1420 if (coro_nready)
1059 { 1421 {
1060 SV *prev = SvRV (coro_current); 1422 SV *prev = SvRV (coro_current);
1061 prepare_schedule (ta); 1423 prepare_schedule (aTHX_ ta);
1062 api_ready (prev); 1424 api_ready (prev);
1063 return 1; 1425 return 1;
1064 } 1426 }
1065 else 1427 else
1066 return 0; 1428 return 0;
1067} 1429}
1068 1430
1069static void 1431static void
1070api_schedule (void) 1432api_schedule (void)
1071{ 1433{
1434 dTHX;
1072 struct transfer_args ta; 1435 struct transfer_args ta;
1073 1436
1074 prepare_schedule (&ta); 1437 prepare_schedule (aTHX_ &ta);
1075 TRANSFER (ta); 1438 TRANSFER (ta);
1076} 1439}
1077 1440
1078static int 1441static int
1079api_cede (void) 1442api_cede (void)
1080{ 1443{
1444 dTHX;
1081 struct transfer_args ta; 1445 struct transfer_args ta;
1082 1446
1083 prepare_cede (&ta); 1447 prepare_cede (aTHX_ &ta);
1084 1448
1085 if (ta.prev != ta.next) 1449 if (expect_true (ta.prev != ta.next))
1086 { 1450 {
1087 TRANSFER (ta); 1451 TRANSFER (ta);
1088 return 1; 1452 return 1;
1089 } 1453 }
1090 else 1454 else
… …
1092} 1456}
1093 1457
1094static int 1458static int
1095api_cede_notself (void) 1459api_cede_notself (void)
1096{ 1460{
1461 dTHX;
1097 struct transfer_args ta; 1462 struct transfer_args ta;
1098 1463
1099 if (prepare_cede_notself (&ta)) 1464 if (prepare_cede_notself (aTHX_ &ta))
1100 { 1465 {
1101 TRANSFER (ta); 1466 TRANSFER (ta);
1102 return 1; 1467 return 1;
1103 } 1468 }
1104 else 1469 else
1105 return 0; 1470 return 0;
1106} 1471}
1107 1472
1473static void
1474api_trace (SV *coro_sv, int flags)
1475{
1476 dTHX;
1477 struct coro *coro = SvSTATE (coro_sv);
1478
1479 if (flags & CC_TRACE)
1480 {
1481 if (!coro->cctx)
1482 coro->cctx = cctx_new ();
1483 else if (!(coro->cctx->flags & CC_TRACE))
1484 croak ("cannot enable tracing on coroutine with custom stack");
1485
1486 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1487 }
1488 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1489 {
1490 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1491
1492 if (coro->flags & CF_RUNNING)
1493 PL_runops = RUNOPS_DEFAULT;
1494 else
1495 coro->slot->runops = RUNOPS_DEFAULT;
1496 }
1497}
1498
1108MODULE = Coro::State PACKAGE = Coro::State 1499MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1109 1500
1110PROTOTYPES: DISABLE 1501PROTOTYPES: DISABLE
1111 1502
1112BOOT: 1503BOOT:
1113{ 1504{
1114#ifdef USE_ITHREADS 1505#ifdef USE_ITHREADS
1115 MUTEX_INIT (&coro_mutex); 1506 MUTEX_INIT (&coro_mutex);
1116#endif 1507#endif
1117 BOOT_PAGESIZE; 1508 BOOT_PAGESIZE;
1118 1509
1510 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1511 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1512
1513 hv_sig = coro_get_hv ("SIG", TRUE);
1514 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
1515 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
1516
1517 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1518 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1519
1119 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1520 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1120 1521
1522 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1523 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1121 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1524 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1122 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1123 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1124 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1125 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1525 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1126 1526
1127 main_mainstack = PL_mainstack; 1527 main_mainstack = PL_mainstack;
1528 main_top_env = PL_top_env;
1529
1530 while (main_top_env->je_prev)
1531 main_top_env = main_top_env->je_prev;
1128 1532
1129 coroapi.ver = CORO_API_VERSION; 1533 coroapi.ver = CORO_API_VERSION;
1534 coroapi.rev = CORO_API_REVISION;
1130 coroapi.transfer = api_transfer; 1535 coroapi.transfer = api_transfer;
1131 1536
1132 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1537 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1133} 1538}
1134 1539
… …
1139 struct coro *coro; 1544 struct coro *coro;
1140 HV *hv; 1545 HV *hv;
1141 int i; 1546 int i;
1142 1547
1143 Newz (0, coro, 1, struct coro); 1548 Newz (0, coro, 1, struct coro);
1144 coro->args = newAV (); 1549 coro->args = newAV ();
1145 coro->save = CORO_SAVE_ALL;
1146 coro->flags = CF_NEW; 1550 coro->flags = CF_NEW;
1147 1551
1552 if (coro_first) coro_first->prev = coro;
1553 coro->next = coro_first;
1554 coro_first = coro;
1555
1148 hv = newHV (); 1556 coro->hv = hv = newHV ();
1149 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1557 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1150 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1558 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1151 1559
1560 av_extend (coro->args, items - 1);
1152 for (i = 1; i < items; i++) 1561 for (i = 1; i < items; i++)
1153 av_push (coro->args, newSVsv (ST (i))); 1562 av_push (coro->args, newSVsv (ST (i)));
1154} 1563}
1155 OUTPUT: 1564 OUTPUT:
1156 RETVAL 1565 RETVAL
1157 1566
1158int 1567# these not obviously related functions are all rolled into the same xs
1159save (SV *coro, int new_save = -1) 1568# function to increase chances that they all will call transfer with the same
1160 CODE: 1569# stack offset
1161 RETVAL = api_save (coro, new_save);
1162 OUTPUT:
1163 RETVAL
1164
1165void 1570void
1166_set_stacklevel (...) 1571_set_stacklevel (...)
1167 ALIAS: 1572 ALIAS:
1168 Coro::State::transfer = 1 1573 Coro::State::transfer = 1
1169 Coro::schedule = 2 1574 Coro::schedule = 2
… …
1182 1587
1183 case 1: 1588 case 1:
1184 if (items != 2) 1589 if (items != 2)
1185 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1590 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1186 1591
1187 prepare_transfer (&ta, ST (0), ST (1)); 1592 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1188 break; 1593 break;
1189 1594
1190 case 2: 1595 case 2:
1191 prepare_schedule (&ta); 1596 prepare_schedule (aTHX_ &ta);
1192 break; 1597 break;
1193 1598
1194 case 3: 1599 case 3:
1195 prepare_cede (&ta); 1600 prepare_cede (aTHX_ &ta);
1196 break; 1601 break;
1197 1602
1198 case 4: 1603 case 4:
1199 if (!prepare_cede_notself (&ta)) 1604 if (!prepare_cede_notself (aTHX_ &ta))
1200 XSRETURN_EMPTY; 1605 XSRETURN_EMPTY;
1201 1606
1202 break; 1607 break;
1203 } 1608 }
1204 1609
1205 BARRIER; 1610 BARRIER;
1611 PUTBACK;
1206 TRANSFER (ta); 1612 TRANSFER (ta);
1613 SPAGAIN; /* might be the sp of a different coroutine now */
1614 /* be extra careful not to ever do anything after TRANSFER */
1207} 1615}
1208 1616
1209bool 1617bool
1210_destroy (SV *coro_sv) 1618_destroy (SV *coro_sv)
1211 CODE: 1619 CODE:
1212 RETVAL = coro_state_destroy (SvSTATE (coro_sv)); 1620 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1213 OUTPUT: 1621 OUTPUT:
1214 RETVAL 1622 RETVAL
1215 1623
1216void 1624void
1217_exit (code) 1625_exit (code)
… …
1219 PROTOTYPE: $ 1627 PROTOTYPE: $
1220 CODE: 1628 CODE:
1221 _exit (code); 1629 _exit (code);
1222 1630
1223int 1631int
1632cctx_stacksize (int new_stacksize = 0)
1633 CODE:
1634 RETVAL = coro_stacksize;
1635 if (new_stacksize)
1636 coro_stacksize = new_stacksize;
1637 OUTPUT:
1638 RETVAL
1639
1640int
1224cctx_count () 1641cctx_count ()
1225 CODE: 1642 CODE:
1226 RETVAL = cctx_count; 1643 RETVAL = cctx_count;
1227 OUTPUT: 1644 OUTPUT:
1228 RETVAL 1645 RETVAL
… …
1232 CODE: 1649 CODE:
1233 RETVAL = cctx_idle; 1650 RETVAL = cctx_idle;
1234 OUTPUT: 1651 OUTPUT:
1235 RETVAL 1652 RETVAL
1236 1653
1654void
1655list ()
1656 PPCODE:
1657{
1658 struct coro *coro;
1659 for (coro = coro_first; coro; coro = coro->next)
1660 if (coro->hv)
1661 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1662}
1663
1664void
1665call (Coro::State coro, SV *coderef)
1666 ALIAS:
1667 eval = 1
1668 CODE:
1669{
1670 if (coro->mainstack)
1671 {
1672 struct coro temp;
1673
1674 if (!(coro->flags & CF_RUNNING))
1675 {
1676 save_perl (aTHX_ &temp);
1677 load_perl (aTHX_ coro);
1678 }
1679
1680 {
1681 dSP;
1682 ENTER;
1683 SAVETMPS;
1684 PUTBACK;
1685 PUSHSTACK;
1686 PUSHMARK (SP);
1687
1688 if (ix)
1689 eval_sv (coderef, 0);
1690 else
1691 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1692
1693 POPSTACK;
1694 SPAGAIN;
1695 FREETMPS;
1696 LEAVE;
1697 PUTBACK;
1698 }
1699
1700 if (!(coro->flags & CF_RUNNING))
1701 {
1702 save_perl (aTHX_ coro);
1703 load_perl (aTHX_ &temp);
1704 }
1705 }
1706}
1707
1708SV *
1709is_ready (Coro::State coro)
1710 PROTOTYPE: $
1711 ALIAS:
1712 is_ready = CF_READY
1713 is_running = CF_RUNNING
1714 is_new = CF_NEW
1715 is_destroyed = CF_DESTROYED
1716 CODE:
1717 RETVAL = boolSV (coro->flags & ix);
1718 OUTPUT:
1719 RETVAL
1720
1721void
1722api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1723
1724SV *
1725has_stack (Coro::State coro)
1726 PROTOTYPE: $
1727 CODE:
1728 RETVAL = boolSV (!!coro->cctx);
1729 OUTPUT:
1730 RETVAL
1731
1732int
1733is_traced (Coro::State coro)
1734 PROTOTYPE: $
1735 CODE:
1736 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1737 OUTPUT:
1738 RETVAL
1739
1740IV
1741rss (Coro::State coro)
1742 PROTOTYPE: $
1743 ALIAS:
1744 usecount = 1
1745 CODE:
1746 switch (ix)
1747 {
1748 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1749 case 1: RETVAL = coro->usecount; break;
1750 }
1751 OUTPUT:
1752 RETVAL
1753
1754
1237MODULE = Coro::State PACKAGE = Coro 1755MODULE = Coro::State PACKAGE = Coro
1238 1756
1239BOOT: 1757BOOT:
1240{ 1758{
1241 int i; 1759 int i;
1242 1760
1761 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1762 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1763 av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
1764
1765 coro_current = coro_get_sv ("Coro::current", FALSE);
1766 SvREADONLY_on (coro_current);
1767
1243 coro_stash = gv_stashpv ("Coro", TRUE); 1768 coro_stash = gv_stashpv ("Coro", TRUE);
1244 1769
1245 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1770 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1246 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1771 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1247 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1772 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1248 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1773 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1249 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1774 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1250 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1775 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1251 1776
1252 coro_current = get_sv ("Coro::current", FALSE);
1253 SvREADONLY_on (coro_current);
1254
1255 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1777 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1256 coro_ready[i] = newAV (); 1778 coro_ready[i] = newAV ();
1257 1779
1258 { 1780 {
1259 SV *sv = perl_get_sv("Coro::API", 1); 1781 SV *sv = perl_get_sv ("Coro::API", TRUE);
1782 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1260 1783
1261 coroapi.schedule = api_schedule; 1784 coroapi.schedule = api_schedule;
1262 coroapi.save = api_save;
1263 coroapi.cede = api_cede; 1785 coroapi.cede = api_cede;
1264 coroapi.cede_notself = api_cede_notself; 1786 coroapi.cede_notself = api_cede_notself;
1265 coroapi.ready = api_ready; 1787 coroapi.ready = api_ready;
1266 coroapi.is_ready = api_is_ready; 1788 coroapi.is_ready = api_is_ready;
1267 coroapi.nready = &coro_nready; 1789 coroapi.nready = &coro_nready;
… …
1308 CODE: 1830 CODE:
1309 RETVAL = boolSV (api_ready (self)); 1831 RETVAL = boolSV (api_ready (self));
1310 OUTPUT: 1832 OUTPUT:
1311 RETVAL 1833 RETVAL
1312 1834
1313SV *
1314is_ready (SV *self)
1315 PROTOTYPE: $
1316 CODE:
1317 RETVAL = boolSV (api_is_ready (self));
1318 OUTPUT:
1319 RETVAL
1320
1321int 1835int
1322nready (...) 1836nready (...)
1323 PROTOTYPE: 1837 PROTOTYPE:
1324 CODE: 1838 CODE:
1325 RETVAL = coro_nready; 1839 RETVAL = coro_nready;
1326 OUTPUT: 1840 OUTPUT:
1327 RETVAL 1841 RETVAL
1328 1842
1843void
1844throw (Coro::State self, SV *throw = &PL_sv_undef)
1845 PROTOTYPE: $;$
1846 CODE:
1847 SvREFCNT_dec (self->throw);
1848 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1849
1850# for async_pool speedup
1851void
1852_pool_1 (SV *cb)
1853 CODE:
1854{
1855 struct coro *coro = SvSTATE (coro_current);
1856 HV *hv = (HV *)SvRV (coro_current);
1857 AV *defav = GvAV (PL_defgv);
1858 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
1859 AV *invoke_av;
1860 int i, len;
1861
1862 if (!invoke)
1863 croak ("\3async_pool terminate\2\n");
1864
1865 SvREFCNT_dec (coro->saved_deffh);
1866 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1867
1868 hv_store (hv, "desc", sizeof ("desc") - 1,
1869 newSVpvn (strpair ("[async_pool]")), 0);
1870
1871 invoke_av = (AV *)SvRV (invoke);
1872 len = av_len (invoke_av);
1873
1874 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1875
1876 if (len > 0)
1877 {
1878 av_fill (defav, len - 1);
1879 for (i = 0; i < len; ++i)
1880 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1881 }
1882
1883 SvREFCNT_dec (invoke);
1884}
1885
1886void
1887_pool_2 (SV *cb)
1888 CODE:
1889{
1890 struct coro *coro = SvSTATE (coro_current);
1891
1892 sv_setsv (cb, &PL_sv_undef);
1893
1894 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1895 coro->saved_deffh = 0;
1896
1897 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1898 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1899 croak ("\3async_pool terminate\2\n");
1900
1901 av_clear (GvAV (PL_defgv));
1902 hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
1903 newSVpvn (strpair ("[async_pool idle]")), 0);
1904
1905 coro->prio = 0;
1906
1907 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1908 api_trace (coro_current, 0);
1909
1910 av_push (av_async_pool, newSVsv (coro_current));
1911}
1912
1913
1329MODULE = Coro::State PACKAGE = Coro::AIO 1914MODULE = Coro::State PACKAGE = Coro::AIO
1330 1915
1331SV * 1916SV *
1332_get_state () 1917_get_state ()
1333 CODE: 1918 CODE:

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines