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Comparing Coro/Coro/State.xs (file contents):
Revision 1.137 by root, Sun Jan 14 20:47:53 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
117/* helper storage struct for Coro::AIO */ 138/* helper storage struct for Coro::AIO */
118struct io_state 139struct io_state
119{ 140{
120 int errorno; 141 int errorno;
121 I32 laststype; 142 I32 laststype;
122 int laststatval; 143 int laststatval;
123 Stat_t statcache; 144 Stat_t statcache;
124}; 145};
125 146
147static size_t coro_stacksize = CORO_STACKSIZE;
126static struct CoroAPI coroapi; 148static struct CoroAPI coroapi;
127static 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;
128static HV *coro_state_stash, *coro_stash; 151static HV *coro_state_stash, *coro_stash;
129static SV *coro_mortal; /* will be freed after next transfer */ 152static SV *coro_mortal; /* will be freed after next transfer */
130 153
131static 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 */
132static 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};
133 177
134/* this is a structure representing a c-level coroutine */ 178/* this is a structure representing a c-level coroutine */
135typedef struct coro_cctx { 179typedef struct coro_cctx {
136 struct coro_cctx *next; 180 struct coro_cctx *next;
137 181
138 /* the stack */ 182 /* the stack */
139 void *sptr; 183 void *sptr;
140 long ssize; /* positive == mmap, otherwise malloc */ 184 size_t ssize;
141 185
142 /* cpu state */ 186 /* cpu state */
143 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 187 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
144 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 */
145 JMPENV *top_env; 189 JMPENV *top_env;
146 coro_context cctx; 190 coro_context cctx;
147 191
148 int inuse;
149
150#if USE_VALGRIND 192#if CORO_USE_VALGRIND
151 int valgrind_id; 193 int valgrind_id;
152#endif 194#endif
195 unsigned char flags;
153} coro_cctx; 196} coro_cctx;
154 197
155enum { 198enum {
156 CF_RUNNING = 0x0001, /* coroutine is running */ 199 CF_RUNNING = 0x0001, /* coroutine is running */
157 CF_READY = 0x0002, /* coroutine is ready */ 200 CF_READY = 0x0002, /* coroutine is ready */
158 CF_NEW = 0x0004, /* has never been switched to */ 201 CF_NEW = 0x0004, /* has never been switched to */
159 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 202 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
160}; 203};
161 204
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
162/* this is a structure representing a perl-level coroutine */ 218/* this is a structure representing a perl-level coroutine */
163struct coro { 219struct coro {
164 /* the c coroutine allocated to this perl coroutine, if any */ 220 /* the c coroutine allocated to this perl coroutine, if any */
165 coro_cctx *cctx; 221 coro_cctx *cctx;
222 int gimme;
166 223
224 /* process data */
225 AV *mainstack;
226 perl_slots *slot; /* basically the saved sp */
227
167 /* data associated with this coroutine (initial args) */ 228 AV *args; /* data associated with this coroutine (initial args) */
168 AV *args; 229 int refcnt; /* coroutines are refcounted, yes */
169 int refcnt;
170 int save; /* CORO_SAVE flags */
171 int flags; /* CF_ flags */ 230 int flags; /* CF_ flags */
231 HV *hv; /* the perl hash associated with this coro, if any */
172 232
173 /* optionally saved, might be zero */ 233 /* statistics */
174 AV *defav; /* @_ */ 234 int usecount; /* number of transfers to this coro */
175 SV *defsv; /* $_ */
176 SV *errsv; /* $@ */
177 SV *irssv; /* $/ */
178 SV *irssv_sv; /* real $/ cache */
179
180#define VAR(name,type) type name;
181# include "state.h"
182#undef VAR
183 235
184 /* coro process data */ 236 /* coro process data */
185 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;
186}; 245};
187 246
188typedef struct coro *Coro__State; 247typedef struct coro *Coro__State;
189typedef struct coro *Coro__State_or_hashref; 248typedef struct coro *Coro__State_or_hashref;
190 249
… …
199 258
200/* for Coro.pm */ 259/* for Coro.pm */
201static SV *coro_current; 260static SV *coro_current;
202static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 261static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
203static int coro_nready; 262static int coro_nready;
263static struct coro *coro_first;
204 264
205/** lowlevel stuff **********************************************************/ 265/** lowlevel stuff **********************************************************/
206 266
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
207static 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 *
208coro_clone_padlist (CV *cv) 298coro_clone_padlist (pTHX_ CV *cv)
209{ 299{
210 AV *padlist = CvPADLIST (cv); 300 AV *padlist = CvPADLIST (cv);
211 AV *newpadlist, *newpad; 301 AV *newpadlist, *newpad;
212 302
213 newpadlist = newAV (); 303 newpadlist = newAV ();
… …
225 315
226 return newpadlist; 316 return newpadlist;
227} 317}
228 318
229static void 319static void
230free_padlist (AV *padlist) 320free_padlist (pTHX_ AV *padlist)
231{ 321{
232 /* may be during global destruction */ 322 /* may be during global destruction */
233 if (SvREFCNT (padlist)) 323 if (SvREFCNT (padlist))
234 { 324 {
235 I32 i = AvFILLp (padlist); 325 I32 i = AvFILLp (padlist);
… …
256 AV *padlist; 346 AV *padlist;
257 AV *av = (AV *)mg->mg_obj; 347 AV *av = (AV *)mg->mg_obj;
258 348
259 /* casting is fun. */ 349 /* casting is fun. */
260 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 350 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
261 free_padlist (padlist); 351 free_padlist (aTHX_ padlist);
262 352
263 SvREFCNT_dec (av); 353 SvREFCNT_dec (av);
264 354
265 return 0; 355 return 0;
266} 356}
… …
274 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 364 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
275 ? SvMAGIC (cv) \ 365 ? SvMAGIC (cv) \
276 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 366 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
277 : 0 367 : 0
278 368
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
279/* the next two functions merely cache the padlists */ 395/* the next two functions merely cache the padlists */
280static void 396static void
281get_padlist (CV *cv) 397get_padlist (pTHX_ CV *cv)
282{ 398{
283 MAGIC *mg = CORO_MAGIC (cv); 399 MAGIC *mg = CORO_MAGIC (cv);
284 AV *av; 400 AV *av;
285 401
286 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 402 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
287 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 403 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
288 else 404 else
289 { 405 {
290#if PREFER_PERL_FUNCTIONS 406#if CORO_PREFER_PERL_FUNCTIONS
291 /* this is probably cleaner, but also slower? */ 407 /* this is probably cleaner, but also slower? */
292 CV *cp = Perl_cv_clone (cv); 408 CV *cp = Perl_cv_clone (cv);
293 CvPADLIST (cv) = CvPADLIST (cp); 409 CvPADLIST (cv) = CvPADLIST (cp);
294 CvPADLIST (cp) = 0; 410 CvPADLIST (cp) = 0;
295 SvREFCNT_dec (cp); 411 SvREFCNT_dec (cp);
296#else 412#else
297 CvPADLIST (cv) = coro_clone_padlist (cv); 413 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
298#endif 414#endif
299 } 415 }
300} 416}
301 417
302static void 418static void
303put_padlist (CV *cv) 419put_padlist (pTHX_ CV *cv)
304{ 420{
305 MAGIC *mg = CORO_MAGIC (cv); 421 MAGIC *mg = CORO_MAGIC (cv);
306 AV *av; 422 AV *av;
307 423
308 if (!mg) 424 if (expect_false (!mg))
309 { 425 {
310 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); 426 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
311 mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 427 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
312 mg->mg_virtual = &vtbl_coro; 428 mg->mg_virtual = &vtbl_coro;
313 mg->mg_obj = (SV *)newAV (); 429 mg->mg_obj = (SV *)newAV ();
314 } 430 }
315 431
316 av = (AV *)mg->mg_obj; 432 av = (AV *)mg->mg_obj;
317 433
318 if (AvFILLp (av) >= AvMAX (av)) 434 if (expect_false (AvFILLp (av) >= AvMAX (av)))
319 av_extend (av, AvMAX (av) + 1); 435 av_extend (av, AvMAX (av) + 1);
320 436
321 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 437 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
322} 438}
323 439
324/** load & save, init *******************************************************/ 440/** load & save, init *******************************************************/
325 441
326#define SB do {
327#define SE } while (0)
328
329#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
330
331static void 442static void
332load_perl (Coro__State c) 443load_perl (pTHX_ Coro__State c)
333{ 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
334#define VAR(name,type) PL_ ## name = c->name; 455 #define VAR(name,type) PL_ ## name = slot->name;
335# include "state.h" 456 # include "state.h"
336#undef VAR 457 #undef VAR
337 458
338 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 459 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
339 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 460 /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
340 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
341 if (c->irssv)
342 {
343 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
344 SvREFCNT_dec (c->irssv);
345 else
346 {
347 REPLACE_SV (PL_rs, c->irssv);
348 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
349 sv_setsv (c->irssv_sv, PL_rs);
350 }
351 }
352 461
353 { 462 {
354 dSP; 463 dSP;
464
355 CV *cv; 465 CV *cv;
356 466
357 /* now do the ugly restore mess */ 467 /* now do the ugly restore mess */
358 while ((cv = (CV *)POPs)) 468 while (expect_true (cv = (CV *)POPs))
359 { 469 {
360 put_padlist (cv); /* mark this padlist as available */ 470 put_padlist (aTHX_ cv); /* mark this padlist as available */
361 CvDEPTH (cv) = PTR2IV (POPs); 471 CvDEPTH (cv) = PTR2IV (POPs);
362 CvPADLIST (cv) = (AV *)POPs; 472 CvPADLIST (cv) = (AV *)POPs;
363 } 473 }
364 474
365 PUTBACK; 475 PUTBACK;
366 } 476 }
367} 477}
368 478
369static void 479static void
370save_perl (Coro__State c) 480save_perl (pTHX_ Coro__State c)
371{ 481{
372 { 482 {
373 dSP; 483 dSP;
374 I32 cxix = cxstack_ix; 484 I32 cxix = cxstack_ix;
375 PERL_CONTEXT *ccstk = cxstack; 485 PERL_CONTEXT *ccstk = cxstack;
… …
378 /* 488 /*
379 * 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
380 * (and reinitialize) all cv's in the whole callchain :( 490 * (and reinitialize) all cv's in the whole callchain :(
381 */ 491 */
382 492
383 EXTEND (SP, 3 + 1);
384 PUSHs (Nullsv); 493 XPUSHs (Nullsv);
385 /* this loop was inspired by pp_caller */ 494 /* this loop was inspired by pp_caller */
386 for (;;) 495 for (;;)
387 { 496 {
388 while (cxix >= 0) 497 while (expect_true (cxix >= 0))
389 { 498 {
390 PERL_CONTEXT *cx = &ccstk[cxix--]; 499 PERL_CONTEXT *cx = &ccstk[cxix--];
391 500
392 if (CxTYPE (cx) == CXt_SUB) 501 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
393 { 502 {
394 CV *cv = cx->blk_sub.cv; 503 CV *cv = cx->blk_sub.cv;
395 504
396 if (CvDEPTH (cv)) 505 if (expect_true (CvDEPTH (cv)))
397 { 506 {
398 EXTEND (SP, 3); 507 EXTEND (SP, 3);
399 PUSHs ((SV *)CvPADLIST (cv)); 508 PUSHs ((SV *)CvPADLIST (cv));
400 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 509 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
401 PUSHs ((SV *)cv); 510 PUSHs ((SV *)cv);
402 511
403 CvDEPTH (cv) = 0; 512 CvDEPTH (cv) = 0;
404 get_padlist (cv); 513 get_padlist (aTHX_ cv);
405 } 514 }
406 } 515 }
407 } 516 }
408 517
409 if (top_si->si_type == PERLSI_MAIN) 518 if (expect_true (top_si->si_type == PERLSI_MAIN))
410 break; 519 break;
411 520
412 top_si = top_si->si_prev; 521 top_si = top_si->si_prev;
413 ccstk = top_si->si_cxstack; 522 ccstk = top_si->si_cxstack;
414 cxix = top_si->si_cxix; 523 cxix = top_si->si_cxix;
415 } 524 }
416 525
417 PUTBACK; 526 PUTBACK;
418 } 527 }
419 528
420 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 */
421 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 530 /* we manually unroll here, as usually 2 slots is enough */
422 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 531 if (SLOT_COUNT >= 1) CXINC;
423 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 */
424 540
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
425#define VAR(name,type)c->name = PL_ ## name; 551 #define VAR(name,type) slot->name = PL_ ## name;
426# include "state.h" 552 # include "state.h"
427#undef VAR 553 #undef VAR
554 }
428} 555}
429 556
430/* 557/*
431 * allocate various perl stacks. This is an exact copy 558 * allocate various perl stacks. This is an exact copy
432 * of perl.c:init_stacks, except that it uses less memory 559 * of perl.c:init_stacks, except that it uses less memory
433 * on the (sometimes correct) assumption that coroutines do 560 * on the (sometimes correct) assumption that coroutines do
434 * not usually need a lot of stackspace. 561 * not usually need a lot of stackspace.
435 */ 562 */
436#if PREFER_PERL_FUNCTIONS 563#if CORO_PREFER_PERL_FUNCTIONS
437# define coro_init_stacks init_stacks 564# define coro_init_stacks init_stacks
438#else 565#else
439static void 566static void
440coro_init_stacks () 567coro_init_stacks (pTHX)
441{ 568{
442 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 569 PL_curstackinfo = new_stackinfo(32, 8);
443 PL_curstackinfo->si_type = PERLSI_MAIN; 570 PL_curstackinfo->si_type = PERLSI_MAIN;
444 PL_curstack = PL_curstackinfo->si_stack; 571 PL_curstack = PL_curstackinfo->si_stack;
445 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 572 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
446 573
447 PL_stack_base = AvARRAY(PL_curstack); 574 PL_stack_base = AvARRAY(PL_curstack);
448 PL_stack_sp = PL_stack_base; 575 PL_stack_sp = PL_stack_base;
449 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 576 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
450 577
451 New(50,PL_tmps_stack,128,SV*); 578 New(50,PL_tmps_stack,32,SV*);
452 PL_tmps_floor = -1; 579 PL_tmps_floor = -1;
453 PL_tmps_ix = -1; 580 PL_tmps_ix = -1;
454 PL_tmps_max = 128; 581 PL_tmps_max = 32;
455 582
456 New(54,PL_markstack,32,I32); 583 New(54,PL_markstack,16,I32);
457 PL_markstack_ptr = PL_markstack; 584 PL_markstack_ptr = PL_markstack;
458 PL_markstack_max = PL_markstack + 32; 585 PL_markstack_max = PL_markstack + 16;
459 586
460#ifdef SET_MARK_OFFSET 587#ifdef SET_MARK_OFFSET
461 SET_MARK_OFFSET; 588 SET_MARK_OFFSET;
462#endif 589#endif
463 590
464 New(54,PL_scopestack,32,I32); 591 New(54,PL_scopestack,8,I32);
465 PL_scopestack_ix = 0; 592 PL_scopestack_ix = 0;
466 PL_scopestack_max = 32; 593 PL_scopestack_max = 8;
467 594
468 New(54,PL_savestack,64,ANY); 595 New(54,PL_savestack,24,ANY);
469 PL_savestack_ix = 0; 596 PL_savestack_ix = 0;
470 PL_savestack_max = 64; 597 PL_savestack_max = 24;
471 598
472#if !PERL_VERSION_ATLEAST (5,9,0) 599#if !PERL_VERSION_ATLEAST (5,9,0)
473 New(54,PL_retstack,16,OP*); 600 New(54,PL_retstack,4,OP*);
474 PL_retstack_ix = 0; 601 PL_retstack_ix = 0;
475 PL_retstack_max = 16; 602 PL_retstack_max = 4;
476#endif 603#endif
477} 604}
478#endif 605#endif
479 606
480/* 607/*
481 * destroy the stacks, the callchain etc... 608 * destroy the stacks, the callchain etc...
482 */ 609 */
483static void 610static void
484coro_destroy_stacks () 611coro_destroy_stacks (pTHX)
485{ 612{
486 if (!IN_DESTRUCT)
487 {
488 /* restore all saved variables and stuff */
489 LEAVE_SCOPE (0);
490 assert (PL_tmps_floor == -1);
491
492 /* free all temporaries */
493 FREETMPS;
494 assert (PL_tmps_ix == -1);
495
496 /* unwind all extra stacks */
497 POPSTACK_TO (PL_mainstack);
498
499 /* unwind main stack */
500 dounwind (-1);
501 }
502
503 while (PL_curstackinfo->si_next) 613 while (PL_curstackinfo->si_next)
504 PL_curstackinfo = PL_curstackinfo->si_next; 614 PL_curstackinfo = PL_curstackinfo->si_next;
505 615
506 while (PL_curstackinfo) 616 while (PL_curstackinfo)
507 { 617 {
… …
522#if !PERL_VERSION_ATLEAST (5,9,0) 632#if !PERL_VERSION_ATLEAST (5,9,0)
523 Safefree (PL_retstack); 633 Safefree (PL_retstack);
524#endif 634#endif
525} 635}
526 636
637static size_t
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
527/** coroutine stack handling ************************************************/ 674/** coroutine stack handling ************************************************/
528 675
529static void 676static void
530setup_coro (struct coro *coro) 677coro_setup (pTHX_ struct coro *coro)
531{ 678{
532 /* 679 /*
533 * emulate part of the perl startup here. 680 * emulate part of the perl startup here.
534 */ 681 */
535
536 coro_init_stacks (); 682 coro_init_stacks (aTHX);
537 683
684 PL_runops = RUNOPS_DEFAULT;
538 PL_curcop = &PL_compiling; 685 PL_curcop = &PL_compiling;
539 PL_in_eval = EVAL_NULL; 686 PL_in_eval = EVAL_NULL;
687 PL_comppad = 0;
540 PL_curpm = 0; 688 PL_curpm = 0;
689 PL_curpad = 0;
541 PL_localizing = 0; 690 PL_localizing = 0;
542 PL_dirty = 0; 691 PL_dirty = 0;
543 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);
544 702
545 { 703 {
546 dSP; 704 dSP;
547 LOGOP myop; 705 LOGOP myop;
548 706
549 SvREFCNT_dec (GvAV (PL_defgv));
550 GvAV (PL_defgv) = coro->args; coro->args = 0;
551
552 Zero (&myop, 1, LOGOP); 707 Zero (&myop, 1, LOGOP);
553 myop.op_next = Nullop; 708 myop.op_next = Nullop;
554 myop.op_flags = OPf_WANT_VOID; 709 myop.op_flags = OPf_WANT_VOID;
555 710
556 PUSHMARK (SP); 711 PUSHMARK (SP);
557 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 712 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
558 PUTBACK; 713 PUTBACK;
559 PL_op = (OP *)&myop; 714 PL_op = (OP *)&myop;
560 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 715 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
561 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;
562 } 731 }
563 732
564 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;
565} 739}
566 740
567static 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
568free_coro_mortal () 778free_coro_mortal (pTHX)
569{ 779{
570 if (coro_mortal) 780 if (expect_true (coro_mortal))
571 { 781 {
572 SvREFCNT_dec (coro_mortal); 782 SvREFCNT_dec (coro_mortal);
573 coro_mortal = 0; 783 coro_mortal = 0;
574 } 784 }
575} 785}
576 786
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
577/* 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 */
578static void NOINLINE 914static void NOINLINE
579prepare_cctx (coro_cctx *cctx) 915cctx_prepare (pTHX_ coro_cctx *cctx)
580{ 916{
581 dSP; 917 dSP;
582 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;
583 924
584 Zero (&myop, 1, LOGOP); 925 Zero (&myop, 1, LOGOP);
585 myop.op_next = PL_op; 926 myop.op_next = PL_op;
586 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 927 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
587 928
… …
593 PL_op = (OP *)&myop; 934 PL_op = (OP *)&myop;
594 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 935 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
595 SPAGAIN; 936 SPAGAIN;
596} 937}
597 938
939/*
940 * this is a _very_ stripped down perl interpreter ;)
941 */
598static void 942static void
599coro_run (void *arg) 943cctx_run (void *arg)
600{ 944{
945 dTHX;
946
601 /* coro_run is the alternative tail of transfer(), so unlock here. */ 947 /* cctx_run is the alternative tail of transfer(), so unlock here. */
602 UNLOCK; 948 UNLOCK;
603 949
604 /* 950 /* we now skip the entersub that lead to transfer() */
605 * this is a _very_ stripped down perl interpreter ;) 951 PL_op = PL_op->op_next;
606 */
607 PL_top_env = &PL_start_env;
608 952
609 /* inject call to cctx_init */ 953 /* inject a fake subroutine call to cctx_init */
610 prepare_cctx ((coro_cctx *)arg); 954 cctx_prepare (aTHX_ (coro_cctx *)arg);
611 955
612 /* 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 */
613 PL_restartop = PL_op; 957 PL_restartop = PL_op;
614 perl_run (PL_curinterp); 958 perl_run (PL_curinterp);
615 959
616 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 960 /*
617 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 */
618} 969}
619 970
620static coro_cctx * 971static coro_cctx *
621cctx_new () 972cctx_new ()
622{ 973{
623 coro_cctx *cctx; 974 coro_cctx *cctx;
975 void *stack_start;
976 size_t stack_size;
624 977
625 ++cctx_count; 978 ++cctx_count;
626 979
627 Newz (0, cctx, 1, coro_cctx); 980 Newz (0, cctx, 1, coro_cctx);
628 981
629#if HAVE_MMAP 982#if HAVE_MMAP
630
631 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 983 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
632 /* mmap supposedly does allocate-on-write for us */ 984 /* mmap supposedly does allocate-on-write for us */
633 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);
634 986
635 if (cctx->sptr == (void *)-1) 987 if (cctx->sptr != (void *)-1)
636 {
637 perror ("FATAL: unable to mmap stack for coroutine");
638 _exit (EXIT_FAILURE);
639 } 988 {
640
641# if STACKGUARD 989# if CORO_STACKGUARD
642 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 990 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
643# 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);
644 1001
645#else
646
647 cctx->ssize = STACKSIZE * (long)sizeof (long);
648 New (0, cctx->sptr, STACKSIZE, long);
649
650 if (!cctx->sptr) 1002 if (!cctx->sptr)
651 { 1003 {
652 perror ("FATAL: unable to malloc stack for coroutine"); 1004 perror ("FATAL: unable to allocate stack for coroutine");
653 _exit (EXIT_FAILURE); 1005 _exit (EXIT_FAILURE);
654 } 1006 }
655 1007
656#endif 1008 stack_start = cctx->sptr;
1009 stack_size = cctx->ssize;
1010 }
657 1011
658#if USE_VALGRIND 1012 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
659 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1013 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
660 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
661 cctx->ssize + (char *)cctx->sptr
662 );
663#endif
664
665 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
666 1014
667 return cctx; 1015 return cctx;
668} 1016}
669 1017
670static void 1018static void
… …
673 if (!cctx) 1021 if (!cctx)
674 return; 1022 return;
675 1023
676 --cctx_count; 1024 --cctx_count;
677 1025
678#if USE_VALGRIND 1026#if CORO_USE_VALGRIND
679 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1027 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
680#endif 1028#endif
681 1029
682#if HAVE_MMAP 1030#if HAVE_MMAP
1031 if (cctx->flags & CC_MAPPED)
683 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)
684#else 1099#else
685 Safefree (cctx->sptr); 1100 expect_false (PL_lex_state != LEX_NOTPARSING)
686#endif 1101#endif
687 1102 )
688 Safefree (cctx); 1103 croak ("Coro::State::transfer called while parsing, but this is not supported");
689}
690
691static coro_cctx *
692cctx_get ()
693{
694 coro_cctx *cctx;
695
696 if (cctx_first)
697 {
698 cctx = cctx_first;
699 cctx_first = cctx->next;
700 --cctx_idle;
701 }
702 else
703 {
704 cctx = cctx_new ();
705 PL_op = PL_op->op_next;
706 } 1104 }
707
708 return cctx;
709} 1105}
710 1106
711static void 1107/* always use the TRANSFER macro */
712cctx_put (coro_cctx *cctx)
713{
714 /* free another cctx if overlimit */
715 if (cctx_idle >= MAX_IDLE_CCTX)
716 {
717 coro_cctx *first = cctx_first;
718 cctx_first = first->next;
719 --cctx_idle;
720
721 assert (!first->inuse);
722 cctx_destroy (first);
723 }
724
725 ++cctx_idle;
726 cctx->next = cctx_first;
727 cctx_first = cctx;
728}
729
730/** coroutine switching *****************************************************/
731
732/* never call directly, always through the coro_state_transfer global variable */
733static void NOINLINE 1108static void NOINLINE
734transfer (struct coro *prev, struct coro *next) 1109transfer (pTHX_ struct coro *prev, struct coro *next)
735{ 1110{
736 dSTACKLEVEL; 1111 dSTACKLEVEL;
737 1112
738 /* sometimes transfer is only called to set idle_sp */ 1113 /* sometimes transfer is only called to set idle_sp */
739 if (!next) 1114 if (expect_false (!next))
740 { 1115 {
741 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1116 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
742 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 */
743 } 1118 }
744 else if (prev != next) 1119 else if (expect_true (prev != next))
745 { 1120 {
746 coro_cctx *prev__cctx; 1121 coro_cctx *prev__cctx;
747 1122
748 if (prev->flags & CF_NEW) 1123 if (expect_false (prev->flags & CF_NEW))
749 { 1124 {
750 /* create a new empty context */ 1125 /* create a new empty context */
751 Newz (0, prev->cctx, 1, coro_cctx); 1126 Newz (0, prev->cctx, 1, coro_cctx);
752 prev->cctx->inuse = 1;
753 prev->flags &= ~CF_NEW; 1127 prev->flags &= ~CF_NEW;
754 prev->flags |= CF_RUNNING; 1128 prev->flags |= CF_RUNNING;
755 } 1129 }
756 1130
757 /*TODO: must not croak here */
758 if (!prev->flags & CF_RUNNING)
759 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
760
761 if (next->flags & CF_RUNNING)
762 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
763
764 if (next->flags & CF_DESTROYED)
765 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
766
767 prev->flags &= ~CF_RUNNING; 1131 prev->flags &= ~CF_RUNNING;
768 next->flags |= CF_RUNNING; 1132 next->flags |= CF_RUNNING;
769 1133
770 LOCK; 1134 LOCK;
771 1135
772 if (next->flags & CF_NEW) 1136 if (expect_false (next->flags & CF_NEW))
773 { 1137 {
774 /* need to start coroutine */ 1138 /* need to start coroutine */
775 next->flags &= ~CF_NEW; 1139 next->flags &= ~CF_NEW;
776 /* first get rid of the old state */ 1140 /* first get rid of the old state */
777 save_perl (prev); 1141 save_perl (aTHX_ prev);
778 /* setup coroutine call */ 1142 /* setup coroutine call */
779 setup_coro (next); 1143 coro_setup (aTHX_ next);
780 /* need a new stack */
781 assert (!next->cctx);
782 } 1144 }
783 else 1145 else
784 { 1146 {
785 /* coroutine already started */ 1147 /* coroutine already started */
786 save_perl (prev); 1148 save_perl (aTHX_ prev);
787 load_perl (next); 1149 load_perl (aTHX_ next);
788 } 1150 }
789 1151
790 prev__cctx = prev->cctx; 1152 prev__cctx = prev->cctx;
791 1153
792 /* possibly "free" the cctx */ 1154 /* possibly "free" the cctx */
793 if (prev__cctx->idle_sp == STACKLEVEL) 1155 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
794 { 1156 {
795 /* 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 */
796 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));
797 1159
798 prev->cctx = 0; 1160 prev->cctx = 0;
799 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
800 cctx_put (prev__cctx); 1168 cctx_put (prev__cctx, prev->gimme);
801 prev__cctx->inuse = 0;
802 } 1169 }
803 1170
1171 ++next->usecount;
1172
804 if (!next->cctx) 1173 if (expect_true (!next->cctx))
805 {
806 next->cctx = cctx_get (); 1174 next->cctx = cctx_get (aTHX_ next->gimme);
807 assert (!next->cctx->inuse);
808 next->cctx->inuse = 1;
809 }
810 1175
811 if (prev__cctx != next->cctx) 1176 if (expect_false (prev__cctx != next->cctx))
812 { 1177 {
813 prev__cctx->top_env = PL_top_env; 1178 prev__cctx->top_env = PL_top_env;
814 PL_top_env = next->cctx->top_env; 1179 PL_top_env = next->cctx->top_env;
815 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1180 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
816 } 1181 }
817 1182
818 free_coro_mortal (); 1183 free_coro_mortal (aTHX);
819 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 }
820 } 1198 }
821} 1199}
822 1200
823struct transfer_args 1201struct transfer_args
824{ 1202{
825 struct coro *prev, *next; 1203 struct coro *prev, *next;
826}; 1204};
827 1205
828#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)
829 1208
830/** high level stuff ********************************************************/ 1209/** high level stuff ********************************************************/
831 1210
832static int 1211static int
833coro_state_destroy (struct coro *coro) 1212coro_state_destroy (pTHX_ struct coro *coro)
834{ 1213{
835 if (coro->flags & CF_DESTROYED) 1214 if (coro->flags & CF_DESTROYED)
836 return 0; 1215 return 0;
837 1216
838 coro->flags |= CF_DESTROYED; 1217 coro->flags |= CF_DESTROYED;
839 1218
840 if (coro->flags & CF_READY) 1219 if (coro->flags & CF_READY)
841 { 1220 {
842 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1221 /* reduce nready, as destroying a ready coro effectively unreadies it */
843 /* alternative: look through all ready queues and remove it */ 1222 /* alternative: look through all ready queues and remove the coro */
844 LOCK; 1223 LOCK;
845 --coro_nready; 1224 --coro_nready;
846 UNLOCK; 1225 UNLOCK;
847 } 1226 }
848 else 1227 else
849 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1228 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
850 1229
851 if (coro->mainstack && coro->mainstack != main_mainstack) 1230 if (coro->mainstack && coro->mainstack != main_mainstack)
852 { 1231 {
853 assert (!(coro->flags & CF_RUNNING));
854
855 struct coro temp; 1232 struct coro temp;
856 Zero (&temp, 1, struct coro);
857 temp.save = CORO_SAVE_ALL;
858 1233
859 if (coro->flags & CF_RUNNING) 1234 if (coro->flags & CF_RUNNING)
860 croak ("FATAL: tried to destroy currently running coroutine"); 1235 croak ("FATAL: tried to destroy currently running coroutine");
861 1236
862 save_perl (&temp); 1237 save_perl (aTHX_ &temp);
863 load_perl (coro); 1238 load_perl (aTHX_ coro);
864 1239
865 coro_destroy_stacks (); 1240 coro_destroy (aTHX_ coro);
866 1241
867 load_perl (&temp); /* this will get rid of defsv etc.. */ 1242 load_perl (aTHX_ &temp);
868 1243
869 coro->mainstack = 0; 1244 coro->slot = 0;
870 } 1245 }
871 1246
872 cctx_destroy (coro->cctx); 1247 cctx_destroy (coro->cctx);
873 SvREFCNT_dec (coro->args); 1248 SvREFCNT_dec (coro->args);
874 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
875 return 1; 1254 return 1;
876} 1255}
877 1256
878static int 1257static int
879coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1258coro_state_free (pTHX_ SV *sv, MAGIC *mg)
880{ 1259{
881 struct coro *coro = (struct coro *)mg->mg_ptr; 1260 struct coro *coro = (struct coro *)mg->mg_ptr;
882 mg->mg_ptr = 0; 1261 mg->mg_ptr = 0;
883 1262
1263 coro->hv = 0;
1264
884 if (--coro->refcnt < 0) 1265 if (--coro->refcnt < 0)
885 { 1266 {
886 coro_state_destroy (coro); 1267 coro_state_destroy (aTHX_ coro);
887 Safefree (coro); 1268 Safefree (coro);
888 } 1269 }
889 1270
890 return 0; 1271 return 0;
891} 1272}
… …
909#else 1290#else
910# define MGf_DUP 0 1291# define MGf_DUP 0
911#endif 1292#endif
912}; 1293};
913 1294
914static struct coro *
915SvSTATE (SV *coro)
916{
917 HV *stash;
918 MAGIC *mg;
919
920 if (SvROK (coro))
921 coro = SvRV (coro);
922
923 stash = SvSTASH (coro);
924 if (stash != coro_stash && stash != coro_state_stash)
925 {
926 /* very slow, but rare, check */
927 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
928 croak ("Coro::State object required");
929 }
930
931 mg = SvMAGIC (coro);
932 assert (mg->mg_type == PERL_MAGIC_ext);
933 return (struct coro *)mg->mg_ptr;
934}
935
936static void 1295static void
937prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1296prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
938{ 1297{
939 ta->prev = SvSTATE (prev_sv); 1298 ta->prev = SvSTATE (prev_sv);
940 ta->next = SvSTATE (next_sv); 1299 ta->next = SvSTATE (next_sv);
1300 TRANSFER_CHECK (*ta);
941} 1301}
942 1302
943static void 1303static void
944api_transfer (SV *prev_sv, SV *next_sv) 1304api_transfer (SV *prev_sv, SV *next_sv)
945{ 1305{
1306 dTHX;
946 struct transfer_args ta; 1307 struct transfer_args ta;
947 1308
948 prepare_transfer (&ta, prev_sv, next_sv); 1309 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
949 TRANSFER (ta); 1310 TRANSFER (ta);
950} 1311}
951 1312
952static int
953api_save (SV *coro_sv, int new_save)
954{
955 struct coro *coro = SvSTATE (coro_sv);
956 int old_save = coro->save;
957
958 if (new_save >= 0)
959 coro->save = new_save;
960
961 return old_save;
962}
963
964/** Coro ********************************************************************/ 1313/** Coro ********************************************************************/
965 1314
966static void 1315static void
967coro_enq (SV *coro_sv) 1316coro_enq (pTHX_ SV *coro_sv)
968{ 1317{
969 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);
970} 1319}
971 1320
972static SV * 1321static SV *
973coro_deq (int min_prio) 1322coro_deq (pTHX_ int min_prio)
974{ 1323{
975 int prio = PRIO_MAX - PRIO_MIN; 1324 int prio = PRIO_MAX - PRIO_MIN;
976 1325
977 min_prio -= PRIO_MIN; 1326 min_prio -= PRIO_MIN;
978 if (min_prio < 0) 1327 if (min_prio < 0)
… …
986} 1335}
987 1336
988static int 1337static int
989api_ready (SV *coro_sv) 1338api_ready (SV *coro_sv)
990{ 1339{
1340 dTHX;
991 struct coro *coro; 1341 struct coro *coro;
992 1342
993 if (SvROK (coro_sv)) 1343 if (SvROK (coro_sv))
994 coro_sv = SvRV (coro_sv); 1344 coro_sv = SvRV (coro_sv);
995 1345
… …
999 return 0; 1349 return 0;
1000 1350
1001 coro->flags |= CF_READY; 1351 coro->flags |= CF_READY;
1002 1352
1003 LOCK; 1353 LOCK;
1004 coro_enq (SvREFCNT_inc (coro_sv)); 1354 coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1005 ++coro_nready; 1355 ++coro_nready;
1006 UNLOCK; 1356 UNLOCK;
1007 1357
1008 return 1; 1358 return 1;
1009} 1359}
1010 1360
1011static int 1361static int
1012api_is_ready (SV *coro_sv) 1362api_is_ready (SV *coro_sv)
1013{ 1363{
1364 dTHX;
1014 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1365 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1015} 1366}
1016 1367
1017static void 1368static void
1018prepare_schedule (struct transfer_args *ta) 1369prepare_schedule (pTHX_ struct transfer_args *ta)
1019{ 1370{
1020 SV *prev_sv, *next_sv; 1371 SV *prev_sv, *next_sv;
1021 1372
1022 for (;;) 1373 for (;;)
1023 { 1374 {
1024 LOCK; 1375 LOCK;
1025 next_sv = coro_deq (PRIO_MIN); 1376 next_sv = coro_deq (aTHX_ PRIO_MIN);
1026 UNLOCK;
1027 1377
1028 /* nothing to schedule: call the idle handler */ 1378 /* nothing to schedule: call the idle handler */
1029 if (!next_sv) 1379 if (expect_false (!next_sv))
1030 { 1380 {
1031 dSP; 1381 dSP;
1382 UNLOCK;
1032 1383
1033 ENTER; 1384 ENTER;
1034 SAVETMPS; 1385 SAVETMPS;
1035 1386
1036 PUSHMARK (SP); 1387 PUSHMARK (SP);
… …
1043 } 1394 }
1044 1395
1045 ta->next = SvSTATE (next_sv); 1396 ta->next = SvSTATE (next_sv);
1046 1397
1047 /* cannot transfer to destroyed coros, skip and look for next */ 1398 /* cannot transfer to destroyed coros, skip and look for next */
1048 if (ta->next->flags & CF_DESTROYED) 1399 if (expect_false (ta->next->flags & CF_DESTROYED))
1049 { 1400 {
1401 UNLOCK;
1050 SvREFCNT_dec (next_sv); 1402 SvREFCNT_dec (next_sv);
1051 /* coro_nready is already taken care of by destroy */ 1403 /* coro_nready is already taken care of by destroy */
1052 continue; 1404 continue;
1053 } 1405 }
1054 1406
1055 LOCK;
1056 --coro_nready; 1407 --coro_nready;
1057 UNLOCK; 1408 UNLOCK;
1058 break; 1409 break;
1059 } 1410 }
1060 1411
1061 /* free this only after the transfer */ 1412 /* free this only after the transfer */
1062 prev_sv = SvRV (coro_current); 1413 prev_sv = SvRV (coro_current);
1063 SvRV_set (coro_current, next_sv);
1064 ta->prev = SvSTATE (prev_sv); 1414 ta->prev = SvSTATE (prev_sv);
1065 1415 TRANSFER_CHECK (*ta);
1066 assert (ta->next->flags & CF_READY); 1416 assert (ta->next->flags & CF_READY);
1067 ta->next->flags &= ~CF_READY; 1417 ta->next->flags &= ~CF_READY;
1418 SvRV_set (coro_current, next_sv);
1068 1419
1069 LOCK; 1420 LOCK;
1070 free_coro_mortal (); 1421 free_coro_mortal (aTHX);
1071 coro_mortal = prev_sv; 1422 coro_mortal = prev_sv;
1072 UNLOCK; 1423 UNLOCK;
1073} 1424}
1074 1425
1075static void 1426static void
1076prepare_cede (struct transfer_args *ta) 1427prepare_cede (pTHX_ struct transfer_args *ta)
1077{ 1428{
1078 api_ready (coro_current); 1429 api_ready (coro_current);
1079 prepare_schedule (ta); 1430 prepare_schedule (aTHX_ ta);
1080} 1431}
1081 1432
1082static int 1433static int
1083prepare_cede_notself (struct transfer_args *ta) 1434prepare_cede_notself (pTHX_ struct transfer_args *ta)
1084{ 1435{
1085 if (coro_nready) 1436 if (coro_nready)
1086 { 1437 {
1087 SV *prev = SvRV (coro_current); 1438 SV *prev = SvRV (coro_current);
1088 prepare_schedule (ta); 1439 prepare_schedule (aTHX_ ta);
1089 api_ready (prev); 1440 api_ready (prev);
1090 return 1; 1441 return 1;
1091 } 1442 }
1092 else 1443 else
1093 return 0; 1444 return 0;
1094} 1445}
1095 1446
1096static void 1447static void
1097api_schedule (void) 1448api_schedule (void)
1098{ 1449{
1450 dTHX;
1099 struct transfer_args ta; 1451 struct transfer_args ta;
1100 1452
1101 prepare_schedule (&ta); 1453 prepare_schedule (aTHX_ &ta);
1102 TRANSFER (ta); 1454 TRANSFER (ta);
1103} 1455}
1104 1456
1105static int 1457static int
1106api_cede (void) 1458api_cede (void)
1107{ 1459{
1460 dTHX;
1108 struct transfer_args ta; 1461 struct transfer_args ta;
1109 1462
1110 prepare_cede (&ta); 1463 prepare_cede (aTHX_ &ta);
1111 1464
1112 if (ta.prev != ta.next) 1465 if (expect_true (ta.prev != ta.next))
1113 { 1466 {
1114 TRANSFER (ta); 1467 TRANSFER (ta);
1115 return 1; 1468 return 1;
1116 } 1469 }
1117 else 1470 else
… …
1119} 1472}
1120 1473
1121static int 1474static int
1122api_cede_notself (void) 1475api_cede_notself (void)
1123{ 1476{
1477 dTHX;
1124 struct transfer_args ta; 1478 struct transfer_args ta;
1125 1479
1126 if (prepare_cede_notself (&ta)) 1480 if (prepare_cede_notself (aTHX_ &ta))
1127 { 1481 {
1128 TRANSFER (ta); 1482 TRANSFER (ta);
1129 return 1; 1483 return 1;
1130 } 1484 }
1131 else 1485 else
1132 return 0; 1486 return 0;
1133} 1487}
1134 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
1135MODULE = Coro::State PACKAGE = Coro::State 1515MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1136 1516
1137PROTOTYPES: DISABLE 1517PROTOTYPES: DISABLE
1138 1518
1139BOOT: 1519BOOT:
1140{ 1520{
1141#ifdef USE_ITHREADS 1521#ifdef USE_ITHREADS
1142 MUTEX_INIT (&coro_mutex); 1522 MUTEX_INIT (&coro_mutex);
1143#endif 1523#endif
1144 BOOT_PAGESIZE; 1524 BOOT_PAGESIZE;
1145 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
1146 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1536 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1147 1537
1538 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1539 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1148 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1540 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1149 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1150 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1151 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1152 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1541 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1153 1542
1154 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;
1155 1548
1156 coroapi.ver = CORO_API_VERSION; 1549 coroapi.ver = CORO_API_VERSION;
1550 coroapi.rev = CORO_API_REVISION;
1157 coroapi.transfer = api_transfer; 1551 coroapi.transfer = api_transfer;
1158 1552
1159 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1553 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1160} 1554}
1161 1555
… …
1166 struct coro *coro; 1560 struct coro *coro;
1167 HV *hv; 1561 HV *hv;
1168 int i; 1562 int i;
1169 1563
1170 Newz (0, coro, 1, struct coro); 1564 Newz (0, coro, 1, struct coro);
1171 coro->args = newAV (); 1565 coro->args = newAV ();
1172 coro->save = CORO_SAVE_ALL;
1173 coro->flags = CF_NEW; 1566 coro->flags = CF_NEW;
1174 1567
1568 if (coro_first) coro_first->prev = coro;
1569 coro->next = coro_first;
1570 coro_first = coro;
1571
1175 hv = newHV (); 1572 coro->hv = hv = newHV ();
1176 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;
1177 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1574 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1178 1575
1576 av_extend (coro->args, items - 1);
1179 for (i = 1; i < items; i++) 1577 for (i = 1; i < items; i++)
1180 av_push (coro->args, newSVsv (ST (i))); 1578 av_push (coro->args, newSVsv (ST (i)));
1181} 1579}
1182 OUTPUT: 1580 OUTPUT:
1183 RETVAL 1581 RETVAL
1184 1582
1185int 1583# these not obviously related functions are all rolled into the same xs
1186save (SV *coro, int new_save = -1) 1584# function to increase chances that they all will call transfer with the same
1187 CODE: 1585# stack offset
1188 RETVAL = api_save (coro, new_save);
1189 OUTPUT:
1190 RETVAL
1191
1192void 1586void
1193_set_stacklevel (...) 1587_set_stacklevel (...)
1194 ALIAS: 1588 ALIAS:
1195 Coro::State::transfer = 1 1589 Coro::State::transfer = 1
1196 Coro::schedule = 2 1590 Coro::schedule = 2
… …
1209 1603
1210 case 1: 1604 case 1:
1211 if (items != 2) 1605 if (items != 2)
1212 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);
1213 1607
1214 prepare_transfer (&ta, ST (0), ST (1)); 1608 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1215 break; 1609 break;
1216 1610
1217 case 2: 1611 case 2:
1218 prepare_schedule (&ta); 1612 prepare_schedule (aTHX_ &ta);
1219 break; 1613 break;
1220 1614
1221 case 3: 1615 case 3:
1222 prepare_cede (&ta); 1616 prepare_cede (aTHX_ &ta);
1223 break; 1617 break;
1224 1618
1225 case 4: 1619 case 4:
1226 if (!prepare_cede_notself (&ta)) 1620 if (!prepare_cede_notself (aTHX_ &ta))
1227 XSRETURN_EMPTY; 1621 XSRETURN_EMPTY;
1228 1622
1229 break; 1623 break;
1230 } 1624 }
1231 1625
1232 BARRIER; 1626 BARRIER;
1627 PUTBACK;
1233 TRANSFER (ta); 1628 TRANSFER (ta);
1234 1629 SPAGAIN; /* might be the sp of a different coroutine now */
1235 if (GIMME_V != G_VOID && ta.next != ta.prev) 1630 /* be extra careful not to ever do anything after TRANSFER */
1236 XSRETURN_YES;
1237} 1631}
1238 1632
1239bool 1633bool
1240_destroy (SV *coro_sv) 1634_destroy (SV *coro_sv)
1241 CODE: 1635 CODE:
1242 RETVAL = coro_state_destroy (SvSTATE (coro_sv)); 1636 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1243 OUTPUT: 1637 OUTPUT:
1244 RETVAL 1638 RETVAL
1245 1639
1246void 1640void
1247_exit (code) 1641_exit (code)
… …
1249 PROTOTYPE: $ 1643 PROTOTYPE: $
1250 CODE: 1644 CODE:
1251 _exit (code); 1645 _exit (code);
1252 1646
1253int 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
1254cctx_count () 1657cctx_count ()
1255 CODE: 1658 CODE:
1256 RETVAL = cctx_count; 1659 RETVAL = cctx_count;
1257 OUTPUT: 1660 OUTPUT:
1258 RETVAL 1661 RETVAL
1259 1662
1260int 1663int
1261cctx_idle () 1664cctx_idle ()
1262 CODE: 1665 CODE:
1263 RETVAL = cctx_idle; 1666 RETVAL = cctx_idle[0] + cctx_idle[1] + cctx_idle[2];
1264 OUTPUT: 1667 OUTPUT:
1265 RETVAL 1668 RETVAL
1266 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
1267MODULE = Coro::State PACKAGE = Coro 1770MODULE = Coro::State PACKAGE = Coro
1268 1771
1269BOOT: 1772BOOT:
1270{ 1773{
1271 int i; 1774 int i;
1272 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
1273 coro_stash = gv_stashpv ("Coro", TRUE); 1783 coro_stash = gv_stashpv ("Coro", TRUE);
1274 1784
1275 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1785 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1276 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1786 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1277 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1787 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1278 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1788 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1279 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1789 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1280 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1790 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1281 1791
1282 coro_current = get_sv ("Coro::current", FALSE);
1283 SvREADONLY_on (coro_current);
1284
1285 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1792 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1286 coro_ready[i] = newAV (); 1793 coro_ready[i] = newAV ();
1287 1794
1288 { 1795 {
1289 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 */
1290 1798
1291 coroapi.schedule = api_schedule; 1799 coroapi.schedule = api_schedule;
1292 coroapi.save = api_save;
1293 coroapi.cede = api_cede; 1800 coroapi.cede = api_cede;
1294 coroapi.cede_notself = api_cede_notself; 1801 coroapi.cede_notself = api_cede_notself;
1295 coroapi.ready = api_ready; 1802 coroapi.ready = api_ready;
1296 coroapi.is_ready = api_is_ready; 1803 coroapi.is_ready = api_is_ready;
1297 coroapi.nready = &coro_nready; 1804 coroapi.nready = &coro_nready;
… …
1338 CODE: 1845 CODE:
1339 RETVAL = boolSV (api_ready (self)); 1846 RETVAL = boolSV (api_ready (self));
1340 OUTPUT: 1847 OUTPUT:
1341 RETVAL 1848 RETVAL
1342 1849
1343SV *
1344is_ready (SV *self)
1345 PROTOTYPE: $
1346 CODE:
1347 RETVAL = boolSV (api_is_ready (self));
1348 OUTPUT:
1349 RETVAL
1350
1351int 1850int
1352nready (...) 1851nready (...)
1353 PROTOTYPE: 1852 PROTOTYPE:
1354 CODE: 1853 CODE:
1355 RETVAL = coro_nready; 1854 RETVAL = coro_nready;
1356 OUTPUT: 1855 OUTPUT:
1357 RETVAL 1856 RETVAL
1358 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
1359MODULE = Coro::State PACKAGE = Coro::AIO 1929MODULE = Coro::State PACKAGE = Coro::AIO
1360 1930
1361SV * 1931SV *
1362_get_state () 1932_get_state ()
1363 CODE: 1933 CODE:

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