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 1.139 by root, Sun Jan 14 21:13:41 2007 UTC vs.
Revision 1.209 by root, Wed Oct 10 02:58:17 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
564 ENTER; /* necessary e.g. for dounwind */
565} 732}
566 733
567static void 734static void
735coro_destroy (pTHX_ struct coro *coro)
736{
737 if (!IN_DESTRUCT)
738 {
739 /* restore all saved variables and stuff */
740 LEAVE_SCOPE (0);
741 assert (PL_tmps_floor == -1);
742
743 /* free all temporaries */
744 FREETMPS;
745 assert (PL_tmps_ix == -1);
746
747 /* unwind all extra stacks */
748 POPSTACK_TO (PL_mainstack);
749
750 /* unwind main stack */
751 dounwind (-1);
752 }
753
754 SvREFCNT_dec (GvSV (PL_defgv));
755 SvREFCNT_dec (GvAV (PL_defgv));
756 SvREFCNT_dec (GvSV (PL_errgv));
757 SvREFCNT_dec (PL_defoutgv);
758 SvREFCNT_dec (PL_rs);
759 SvREFCNT_dec (GvSV (irsgv));
760
761 SvREFCNT_dec (PL_diehook);
762 SvREFCNT_dec (PL_warnhook);
763
764 SvREFCNT_dec (coro->saved_deffh);
765 SvREFCNT_dec (coro->throw);
766
767 coro_destroy_stacks (aTHX);
768}
769
770static void
568free_coro_mortal () 771free_coro_mortal (pTHX)
569{ 772{
570 if (coro_mortal) 773 if (expect_true (coro_mortal))
571 { 774 {
572 SvREFCNT_dec (coro_mortal); 775 SvREFCNT_dec (coro_mortal);
573 coro_mortal = 0; 776 coro_mortal = 0;
574 } 777 }
575} 778}
576 779
780static int
781runops_trace (pTHX)
782{
783 COP *oldcop = 0;
784 int oldcxix = -2;
785 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
786 coro_cctx *cctx = coro->cctx;
787
788 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
789 {
790 PERL_ASYNC_CHECK ();
791
792 if (cctx->flags & CC_TRACE_ALL)
793 {
794 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
795 {
796 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
797 SV **bot, **top;
798 AV *av = newAV (); /* return values */
799 SV **cb;
800 dSP;
801
802 GV *gv = CvGV (cx->blk_sub.cv);
803 SV *fullname = sv_2mortal (newSV (0));
804 if (isGV (gv))
805 gv_efullname3 (fullname, gv, 0);
806
807 bot = PL_stack_base + cx->blk_oldsp + 1;
808 top = cx->blk_gimme == G_ARRAY ? SP + 1
809 : cx->blk_gimme == G_SCALAR ? bot + 1
810 : bot;
811
812 av_extend (av, top - bot);
813 while (bot < top)
814 av_push (av, SvREFCNT_inc (*bot++));
815
816 PL_runops = RUNOPS_DEFAULT;
817 ENTER;
818 SAVETMPS;
819 EXTEND (SP, 3);
820 PUSHMARK (SP);
821 PUSHs (&PL_sv_no);
822 PUSHs (fullname);
823 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
824 PUTBACK;
825 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
826 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
827 SPAGAIN;
828 FREETMPS;
829 LEAVE;
830 PL_runops = runops_trace;
831 }
832
833 if (oldcop != PL_curcop)
834 {
835 oldcop = PL_curcop;
836
837 if (PL_curcop != &PL_compiling)
838 {
839 SV **cb;
840
841 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
842 {
843 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
844
845 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
846 {
847 runops_proc_t old_runops = PL_runops;
848 dSP;
849 GV *gv = CvGV (cx->blk_sub.cv);
850 SV *fullname = sv_2mortal (newSV (0));
851
852 if (isGV (gv))
853 gv_efullname3 (fullname, gv, 0);
854
855 PL_runops = RUNOPS_DEFAULT;
856 ENTER;
857 SAVETMPS;
858 EXTEND (SP, 3);
859 PUSHMARK (SP);
860 PUSHs (&PL_sv_yes);
861 PUSHs (fullname);
862 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
863 PUTBACK;
864 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
865 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
866 SPAGAIN;
867 FREETMPS;
868 LEAVE;
869 PL_runops = runops_trace;
870 }
871
872 oldcxix = cxstack_ix;
873 }
874
875 if (cctx->flags & CC_TRACE_LINE)
876 {
877 dSP;
878
879 PL_runops = RUNOPS_DEFAULT;
880 ENTER;
881 SAVETMPS;
882 EXTEND (SP, 3);
883 PL_runops = RUNOPS_DEFAULT;
884 PUSHMARK (SP);
885 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
886 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
887 PUTBACK;
888 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
889 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
890 SPAGAIN;
891 FREETMPS;
892 LEAVE;
893 PL_runops = runops_trace;
894 }
895 }
896 }
897 }
898 }
899
900 TAINT_NOT;
901 return 0;
902}
903
577/* inject a fake call to Coro::State::_cctx_init into the execution */ 904/* inject a fake call to Coro::State::_cctx_init into the execution */
905/* _cctx_init should be careful, as it could be called at almost any time */
906/* during execution of a perl program */
578static void NOINLINE 907static void NOINLINE
579prepare_cctx (coro_cctx *cctx) 908cctx_prepare (pTHX_ coro_cctx *cctx)
580{ 909{
581 dSP; 910 dSP;
582 LOGOP myop; 911 LOGOP myop;
912
913 PL_top_env = &PL_start_env;
914
915 if (cctx->flags & CC_TRACE)
916 PL_runops = runops_trace;
583 917
584 Zero (&myop, 1, LOGOP); 918 Zero (&myop, 1, LOGOP);
585 myop.op_next = PL_op; 919 myop.op_next = PL_op;
586 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 920 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
587 921
… …
593 PL_op = (OP *)&myop; 927 PL_op = (OP *)&myop;
594 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 928 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
595 SPAGAIN; 929 SPAGAIN;
596} 930}
597 931
932/*
933 * this is a _very_ stripped down perl interpreter ;)
934 */
598static void 935static void
599coro_run (void *arg) 936cctx_run (void *arg)
600{ 937{
938 dTHX;
939
601 /* coro_run is the alternative tail of transfer(), so unlock here. */ 940 /* cctx_run is the alternative tail of transfer(), so unlock here. */
602 UNLOCK; 941 UNLOCK;
603 942
604 /* 943 /* we now skip the entersub that lead to transfer() */
605 * this is a _very_ stripped down perl interpreter ;) 944 PL_op = PL_op->op_next;
606 */
607 PL_top_env = &PL_start_env;
608 945
609 /* inject call to cctx_init */ 946 /* inject a fake subroutine call to cctx_init */
610 prepare_cctx ((coro_cctx *)arg); 947 cctx_prepare (aTHX_ (coro_cctx *)arg);
611 948
612 /* somebody will hit me for both perl_run and PL_restartop */ 949 /* somebody or something will hit me for both perl_run and PL_restartop */
613 PL_restartop = PL_op; 950 PL_restartop = PL_op;
614 perl_run (PL_curinterp); 951 perl_run (PL_curinterp);
615 952
616 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 953 /*
617 abort (); 954 * If perl-run returns we assume exit() was being called or the coro
955 * fell off the end, which seems to be the only valid (non-bug)
956 * reason for perl_run to return. We try to exit by jumping to the
957 * bootstrap-time "top" top_env, as we cannot restore the "main"
958 * coroutine as Coro has no such concept
959 */
960 PL_top_env = main_top_env;
961 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
618} 962}
619 963
620static coro_cctx * 964static coro_cctx *
621cctx_new () 965cctx_new ()
622{ 966{
623 coro_cctx *cctx; 967 coro_cctx *cctx;
968 void *stack_start;
969 size_t stack_size;
624 970
625 ++cctx_count; 971 ++cctx_count;
626 972
627 Newz (0, cctx, 1, coro_cctx); 973 Newz (0, cctx, 1, coro_cctx);
628 974
629#if HAVE_MMAP 975#if HAVE_MMAP
630
631 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 976 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
632 /* mmap supposedly does allocate-on-write for us */ 977 /* 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); 978 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
634 979
635 if (cctx->sptr == (void *)-1) 980 if (cctx->sptr != (void *)-1)
636 {
637 perror ("FATAL: unable to mmap stack for coroutine");
638 _exit (EXIT_FAILURE);
639 } 981 {
640
641# if STACKGUARD 982# if CORO_STACKGUARD
642 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 983 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
643# endif 984# endif
985 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
986 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
987 cctx->flags |= CC_MAPPED;
988 }
989 else
990#endif
991 {
992 cctx->ssize = coro_stacksize * (long)sizeof (long);
993 New (0, cctx->sptr, coro_stacksize, long);
644 994
645#else
646
647 cctx->ssize = STACKSIZE * (long)sizeof (long);
648 New (0, cctx->sptr, STACKSIZE, long);
649
650 if (!cctx->sptr) 995 if (!cctx->sptr)
651 { 996 {
652 perror ("FATAL: unable to malloc stack for coroutine"); 997 perror ("FATAL: unable to allocate stack for coroutine");
653 _exit (EXIT_FAILURE); 998 _exit (EXIT_FAILURE);
654 } 999 }
655 1000
656#endif 1001 stack_start = cctx->sptr;
1002 stack_size = cctx->ssize;
1003 }
657 1004
658#if USE_VALGRIND 1005 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
659 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1006 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 1007
667 return cctx; 1008 return cctx;
668} 1009}
669 1010
670static void 1011static void
… …
673 if (!cctx) 1014 if (!cctx)
674 return; 1015 return;
675 1016
676 --cctx_count; 1017 --cctx_count;
677 1018
678#if USE_VALGRIND 1019#if CORO_USE_VALGRIND
679 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1020 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
680#endif 1021#endif
681 1022
682#if HAVE_MMAP 1023#if HAVE_MMAP
1024 if (cctx->flags & CC_MAPPED)
683 munmap (cctx->sptr, cctx->ssize); 1025 munmap (cctx->sptr, cctx->ssize);
1026 else
1027#endif
1028 Safefree (cctx->sptr);
1029
1030 Safefree (cctx);
1031}
1032
1033/* wether this cctx should be destructed */
1034#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1035
1036static coro_cctx *
1037cctx_get (pTHX_ int gimme)
1038{
1039 while (expect_true (cctx_first[gimme]))
1040 {
1041 coro_cctx *cctx = cctx_first[gimme];
1042 cctx_first[gimme] = cctx->next;
1043 --cctx_idle[gimme];
1044
1045 if (expect_true (!CCTX_EXPIRED (cctx)))
1046 return cctx;
1047
1048 cctx_destroy (cctx);
1049 }
1050
1051 assert (!gimme);
1052 return cctx_new ();
1053}
1054
1055static void
1056cctx_put (coro_cctx *cctx, int gimme)
1057{
1058 /* free another cctx if overlimit */
1059 if (expect_false (cctx_idle[gimme] >= MAX_IDLE_CCTX))
1060 {
1061 coro_cctx *first = cctx_first[gimme];
1062 cctx_first[gimme] = first->next;
1063 --cctx_idle[gimme];
1064
1065 cctx_destroy (first);
1066 }
1067
1068 ++cctx_idle[gimme];
1069 cctx->next = cctx_first[gimme];
1070 cctx_first[gimme] = cctx;
1071}
1072
1073/** coroutine switching *****************************************************/
1074
1075static void
1076transfer_check (pTHX_ struct coro *prev, struct coro *next)
1077{
1078 if (expect_true (prev != next))
1079 {
1080 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1081 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1082
1083 if (expect_false (next->flags & CF_RUNNING))
1084 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1085
1086 if (expect_false (next->flags & CF_DESTROYED))
1087 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1088
1089 if (
1090#if PERL_VERSION_ATLEAST (5,9,0)
1091 expect_false (PL_parser)
684#else 1092#else
685 Safefree (cctx->sptr); 1093 expect_false (PL_lex_state != LEX_NOTPARSING)
686#endif 1094#endif
687 1095 )
688 Safefree (cctx); 1096 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 } 1097 }
707
708 return cctx;
709} 1098}
710 1099
711static void 1100/* 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 1101static void NOINLINE
734transfer (struct coro *prev, struct coro *next) 1102transfer (pTHX_ struct coro *prev, struct coro *next)
735{ 1103{
736 dSTACKLEVEL; 1104 dSTACKLEVEL;
737 1105
738 /* sometimes transfer is only called to set idle_sp */ 1106 /* sometimes transfer is only called to set idle_sp */
739 if (!next) 1107 if (expect_false (!next))
740 { 1108 {
741 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1109 ((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 */ 1110 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
743 } 1111 }
744 else if (prev != next) 1112 else if (expect_true (prev != next))
745 { 1113 {
746 coro_cctx *prev__cctx; 1114 coro_cctx *prev__cctx;
747 1115
748 if (prev->flags & CF_NEW) 1116 if (expect_false (prev->flags & CF_NEW))
749 { 1117 {
750 /* create a new empty context */ 1118 /* create a new empty context */
751 Newz (0, prev->cctx, 1, coro_cctx); 1119 Newz (0, prev->cctx, 1, coro_cctx);
752 prev->cctx->inuse = 1;
753 prev->flags &= ~CF_NEW; 1120 prev->flags &= ~CF_NEW;
754 prev->flags |= CF_RUNNING; 1121 prev->flags |= CF_RUNNING;
755 } 1122 }
756 1123
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; 1124 prev->flags &= ~CF_RUNNING;
768 next->flags |= CF_RUNNING; 1125 next->flags |= CF_RUNNING;
769 1126
770 LOCK; 1127 LOCK;
771 1128
772 if (next->flags & CF_NEW) 1129 if (expect_false (next->flags & CF_NEW))
773 { 1130 {
774 /* need to start coroutine */ 1131 /* need to start coroutine */
775 next->flags &= ~CF_NEW; 1132 next->flags &= ~CF_NEW;
776 /* first get rid of the old state */ 1133 /* first get rid of the old state */
777 save_perl (prev); 1134 save_perl (aTHX_ prev);
778 /* setup coroutine call */ 1135 /* setup coroutine call */
779 setup_coro (next); 1136 coro_setup (aTHX_ next);
780 /* need a new stack */
781 assert (!next->cctx);
782 } 1137 }
783 else 1138 else
784 { 1139 {
785 /* coroutine already started */ 1140 /* coroutine already started */
786 save_perl (prev); 1141 save_perl (aTHX_ prev);
787 load_perl (next); 1142 load_perl (aTHX_ next);
788 } 1143 }
789 1144
790 prev__cctx = prev->cctx; 1145 prev__cctx = prev->cctx;
791 1146
792 /* possibly "free" the cctx */ 1147 /* possibly "free" the cctx */
793 if (prev__cctx->idle_sp == STACKLEVEL) 1148 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
794 { 1149 {
795 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1150 /* 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)); 1151 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
797 1152
798 prev->cctx = 0; 1153 prev->cctx = 0;
799 1154
1155 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1156 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1157 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1158 if (!next->cctx)
1159 next->cctx = cctx_get (aTHX_ next->gimme);
1160
800 cctx_put (prev__cctx); 1161 cctx_put (prev__cctx, prev->gimme);
801 prev__cctx->inuse = 0;
802 } 1162 }
803 1163
1164 ++next->usecount;
1165
804 if (!next->cctx) 1166 if (expect_true (!next->cctx))
805 {
806 next->cctx = cctx_get (); 1167 next->cctx = cctx_get (aTHX_ next->gimme);
807 assert (!next->cctx->inuse);
808 next->cctx->inuse = 1;
809 }
810 1168
811 if (prev__cctx != next->cctx) 1169 if (expect_false (prev__cctx != next->cctx))
812 { 1170 {
813 prev__cctx->top_env = PL_top_env; 1171 prev__cctx->top_env = PL_top_env;
814 PL_top_env = next->cctx->top_env; 1172 PL_top_env = next->cctx->top_env;
815 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1173 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
816 } 1174 }
817 1175
818 free_coro_mortal (); 1176 free_coro_mortal (aTHX);
819 UNLOCK; 1177 UNLOCK;
1178
1179 if (expect_false (prev->throw || next->throw))
1180 {
1181 struct coro *coro = SvSTATE (coro_current);
1182
1183 if (coro->throw)
1184 {
1185 SV *exception = coro->throw;
1186 coro->throw = 0;
1187 sv_setsv (ERRSV, exception);
1188 croak (0);
1189 }
1190 }
820 } 1191 }
821} 1192}
822 1193
823struct transfer_args 1194struct transfer_args
824{ 1195{
825 struct coro *prev, *next; 1196 struct coro *prev, *next;
826}; 1197};
827 1198
828#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1199#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
1200#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
829 1201
830/** high level stuff ********************************************************/ 1202/** high level stuff ********************************************************/
831 1203
832static int 1204static int
833coro_state_destroy (struct coro *coro) 1205coro_state_destroy (pTHX_ struct coro *coro)
834{ 1206{
835 if (coro->flags & CF_DESTROYED) 1207 if (coro->flags & CF_DESTROYED)
836 return 0; 1208 return 0;
837 1209
838 coro->flags |= CF_DESTROYED; 1210 coro->flags |= CF_DESTROYED;
… …
848 else 1220 else
849 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1221 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
850 1222
851 if (coro->mainstack && coro->mainstack != main_mainstack) 1223 if (coro->mainstack && coro->mainstack != main_mainstack)
852 { 1224 {
853 assert (!(coro->flags & CF_RUNNING));
854
855 struct coro temp; 1225 struct coro temp;
856 Zero (&temp, 1, struct coro);
857 temp.save = CORO_SAVE_ALL;
858 1226
859 if (coro->flags & CF_RUNNING) 1227 if (coro->flags & CF_RUNNING)
860 croak ("FATAL: tried to destroy currently running coroutine"); 1228 croak ("FATAL: tried to destroy currently running coroutine");
861 1229
862 save_perl (&temp); 1230 save_perl (aTHX_ &temp);
863 load_perl (coro); 1231 load_perl (aTHX_ coro);
864 1232
865 coro_destroy_stacks (); 1233 coro_destroy (aTHX_ coro);
866 1234
867 load_perl (&temp); /* this will get rid of defsv etc.. */ 1235 load_perl (aTHX_ &temp);
868 1236
869 coro->mainstack = 0; 1237 coro->slot = 0;
870 } 1238 }
871 1239
872 cctx_destroy (coro->cctx); 1240 cctx_destroy (coro->cctx);
873 SvREFCNT_dec (coro->args); 1241 SvREFCNT_dec (coro->args);
874 1242
1243 if (coro->next) coro->next->prev = coro->prev;
1244 if (coro->prev) coro->prev->next = coro->next;
1245 if (coro == coro_first) coro_first = coro->next;
1246
875 return 1; 1247 return 1;
876} 1248}
877 1249
878static int 1250static int
879coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1251coro_state_free (pTHX_ SV *sv, MAGIC *mg)
880{ 1252{
881 struct coro *coro = (struct coro *)mg->mg_ptr; 1253 struct coro *coro = (struct coro *)mg->mg_ptr;
882 mg->mg_ptr = 0; 1254 mg->mg_ptr = 0;
883 1255
1256 coro->hv = 0;
1257
884 if (--coro->refcnt < 0) 1258 if (--coro->refcnt < 0)
885 { 1259 {
886 coro_state_destroy (coro); 1260 coro_state_destroy (aTHX_ coro);
887 Safefree (coro); 1261 Safefree (coro);
888 } 1262 }
889 1263
890 return 0; 1264 return 0;
891} 1265}
… …
909#else 1283#else
910# define MGf_DUP 0 1284# define MGf_DUP 0
911#endif 1285#endif
912}; 1286};
913 1287
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 1288static void
937prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1289prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
938{ 1290{
939 ta->prev = SvSTATE (prev_sv); 1291 ta->prev = SvSTATE (prev_sv);
940 ta->next = SvSTATE (next_sv); 1292 ta->next = SvSTATE (next_sv);
1293 TRANSFER_CHECK (*ta);
941} 1294}
942 1295
943static void 1296static void
944api_transfer (SV *prev_sv, SV *next_sv) 1297api_transfer (SV *prev_sv, SV *next_sv)
945{ 1298{
1299 dTHX;
946 struct transfer_args ta; 1300 struct transfer_args ta;
947 1301
948 prepare_transfer (&ta, prev_sv, next_sv); 1302 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
949 TRANSFER (ta); 1303 TRANSFER (ta);
950} 1304}
951 1305
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 ********************************************************************/ 1306/** Coro ********************************************************************/
965 1307
966static void 1308static void
967coro_enq (SV *coro_sv) 1309coro_enq (pTHX_ SV *coro_sv)
968{ 1310{
969 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1311 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
970} 1312}
971 1313
972static SV * 1314static SV *
973coro_deq (int min_prio) 1315coro_deq (pTHX_ int min_prio)
974{ 1316{
975 int prio = PRIO_MAX - PRIO_MIN; 1317 int prio = PRIO_MAX - PRIO_MIN;
976 1318
977 min_prio -= PRIO_MIN; 1319 min_prio -= PRIO_MIN;
978 if (min_prio < 0) 1320 if (min_prio < 0)
… …
986} 1328}
987 1329
988static int 1330static int
989api_ready (SV *coro_sv) 1331api_ready (SV *coro_sv)
990{ 1332{
1333 dTHX;
991 struct coro *coro; 1334 struct coro *coro;
992 1335
993 if (SvROK (coro_sv)) 1336 if (SvROK (coro_sv))
994 coro_sv = SvRV (coro_sv); 1337 coro_sv = SvRV (coro_sv);
995 1338
… …
999 return 0; 1342 return 0;
1000 1343
1001 coro->flags |= CF_READY; 1344 coro->flags |= CF_READY;
1002 1345
1003 LOCK; 1346 LOCK;
1004 coro_enq (SvREFCNT_inc (coro_sv)); 1347 coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1005 ++coro_nready; 1348 ++coro_nready;
1006 UNLOCK; 1349 UNLOCK;
1007 1350
1008 return 1; 1351 return 1;
1009} 1352}
1010 1353
1011static int 1354static int
1012api_is_ready (SV *coro_sv) 1355api_is_ready (SV *coro_sv)
1013{ 1356{
1357 dTHX;
1014 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1358 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1015} 1359}
1016 1360
1017static void 1361static void
1018prepare_schedule (struct transfer_args *ta) 1362prepare_schedule (pTHX_ struct transfer_args *ta)
1019{ 1363{
1020 SV *prev_sv, *next_sv; 1364 SV *prev_sv, *next_sv;
1021 1365
1022 for (;;) 1366 for (;;)
1023 { 1367 {
1024 LOCK; 1368 LOCK;
1025 next_sv = coro_deq (PRIO_MIN); 1369 next_sv = coro_deq (aTHX_ PRIO_MIN);
1026 1370
1027 /* nothing to schedule: call the idle handler */ 1371 /* nothing to schedule: call the idle handler */
1028 if (!next_sv) 1372 if (expect_false (!next_sv))
1029 { 1373 {
1374 dSP;
1030 UNLOCK; 1375 UNLOCK;
1031 dSP;
1032 1376
1033 ENTER; 1377 ENTER;
1034 SAVETMPS; 1378 SAVETMPS;
1035 1379
1036 PUSHMARK (SP); 1380 PUSHMARK (SP);
… …
1043 } 1387 }
1044 1388
1045 ta->next = SvSTATE (next_sv); 1389 ta->next = SvSTATE (next_sv);
1046 1390
1047 /* cannot transfer to destroyed coros, skip and look for next */ 1391 /* cannot transfer to destroyed coros, skip and look for next */
1048 if (ta->next->flags & CF_DESTROYED) 1392 if (expect_false (ta->next->flags & CF_DESTROYED))
1049 { 1393 {
1050 UNLOCK; 1394 UNLOCK;
1051 SvREFCNT_dec (next_sv); 1395 SvREFCNT_dec (next_sv);
1052 /* coro_nready is already taken care of by destroy */ 1396 /* coro_nready is already taken care of by destroy */
1053 continue; 1397 continue;
… …
1058 break; 1402 break;
1059 } 1403 }
1060 1404
1061 /* free this only after the transfer */ 1405 /* free this only after the transfer */
1062 prev_sv = SvRV (coro_current); 1406 prev_sv = SvRV (coro_current);
1063 SvRV_set (coro_current, next_sv);
1064 ta->prev = SvSTATE (prev_sv); 1407 ta->prev = SvSTATE (prev_sv);
1065 1408 TRANSFER_CHECK (*ta);
1066 assert (ta->next->flags & CF_READY); 1409 assert (ta->next->flags & CF_READY);
1067 ta->next->flags &= ~CF_READY; 1410 ta->next->flags &= ~CF_READY;
1411 SvRV_set (coro_current, next_sv);
1068 1412
1069 LOCK; 1413 LOCK;
1070 free_coro_mortal (); 1414 free_coro_mortal (aTHX);
1071 coro_mortal = prev_sv; 1415 coro_mortal = prev_sv;
1072 UNLOCK; 1416 UNLOCK;
1073} 1417}
1074 1418
1075static void 1419static void
1076prepare_cede (struct transfer_args *ta) 1420prepare_cede (pTHX_ struct transfer_args *ta)
1077{ 1421{
1078 api_ready (coro_current); 1422 api_ready (coro_current);
1079 prepare_schedule (ta); 1423 prepare_schedule (aTHX_ ta);
1080} 1424}
1081 1425
1082static int 1426static int
1083prepare_cede_notself (struct transfer_args *ta) 1427prepare_cede_notself (pTHX_ struct transfer_args *ta)
1084{ 1428{
1085 if (coro_nready) 1429 if (coro_nready)
1086 { 1430 {
1087 SV *prev = SvRV (coro_current); 1431 SV *prev = SvRV (coro_current);
1088 prepare_schedule (ta); 1432 prepare_schedule (aTHX_ ta);
1089 api_ready (prev); 1433 api_ready (prev);
1090 return 1; 1434 return 1;
1091 } 1435 }
1092 else 1436 else
1093 return 0; 1437 return 0;
1094} 1438}
1095 1439
1096static void 1440static void
1097api_schedule (void) 1441api_schedule (void)
1098{ 1442{
1443 dTHX;
1099 struct transfer_args ta; 1444 struct transfer_args ta;
1100 1445
1101 prepare_schedule (&ta); 1446 prepare_schedule (aTHX_ &ta);
1102 TRANSFER (ta); 1447 TRANSFER (ta);
1103} 1448}
1104 1449
1105static int 1450static int
1106api_cede (void) 1451api_cede (void)
1107{ 1452{
1453 dTHX;
1108 struct transfer_args ta; 1454 struct transfer_args ta;
1109 1455
1110 prepare_cede (&ta); 1456 prepare_cede (aTHX_ &ta);
1111 1457
1112 if (ta.prev != ta.next) 1458 if (expect_true (ta.prev != ta.next))
1113 { 1459 {
1114 TRANSFER (ta); 1460 TRANSFER (ta);
1115 return 1; 1461 return 1;
1116 } 1462 }
1117 else 1463 else
… …
1119} 1465}
1120 1466
1121static int 1467static int
1122api_cede_notself (void) 1468api_cede_notself (void)
1123{ 1469{
1470 dTHX;
1124 struct transfer_args ta; 1471 struct transfer_args ta;
1125 1472
1126 if (prepare_cede_notself (&ta)) 1473 if (prepare_cede_notself (aTHX_ &ta))
1127 { 1474 {
1128 TRANSFER (ta); 1475 TRANSFER (ta);
1129 return 1; 1476 return 1;
1130 } 1477 }
1131 else 1478 else
1132 return 0; 1479 return 0;
1133} 1480}
1134 1481
1482static void
1483api_trace (SV *coro_sv, int flags)
1484{
1485 dTHX;
1486 struct coro *coro = SvSTATE (coro_sv);
1487
1488 if (flags & CC_TRACE)
1489 {
1490 if (!coro->cctx)
1491 coro->cctx = cctx_new ();
1492 else if (!(coro->cctx->flags & CC_TRACE))
1493 croak ("cannot enable tracing on coroutine with custom stack");
1494
1495 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1496 }
1497 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1498 {
1499 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1500
1501 if (coro->flags & CF_RUNNING)
1502 PL_runops = RUNOPS_DEFAULT;
1503 else
1504 coro->slot->runops = RUNOPS_DEFAULT;
1505 }
1506}
1507
1135MODULE = Coro::State PACKAGE = Coro::State 1508MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1136 1509
1137PROTOTYPES: DISABLE 1510PROTOTYPES: DISABLE
1138 1511
1139BOOT: 1512BOOT:
1140{ 1513{
1141#ifdef USE_ITHREADS 1514#ifdef USE_ITHREADS
1142 MUTEX_INIT (&coro_mutex); 1515 MUTEX_INIT (&coro_mutex);
1143#endif 1516#endif
1144 BOOT_PAGESIZE; 1517 BOOT_PAGESIZE;
1145 1518
1519 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1520 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1521
1522 hv_sig = coro_get_hv ("SIG", TRUE);
1523 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
1524 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
1525
1526 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1527 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1528
1146 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1529 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1147 1530
1531 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1532 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1148 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1533 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)); 1534 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1153 1535
1154 main_mainstack = PL_mainstack; 1536 main_mainstack = PL_mainstack;
1537 main_top_env = PL_top_env;
1538
1539 while (main_top_env->je_prev)
1540 main_top_env = main_top_env->je_prev;
1155 1541
1156 coroapi.ver = CORO_API_VERSION; 1542 coroapi.ver = CORO_API_VERSION;
1157 coroapi.transfer = api_transfer; 1543 coroapi.transfer = api_transfer;
1158 1544
1159 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1545 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
… …
1166 struct coro *coro; 1552 struct coro *coro;
1167 HV *hv; 1553 HV *hv;
1168 int i; 1554 int i;
1169 1555
1170 Newz (0, coro, 1, struct coro); 1556 Newz (0, coro, 1, struct coro);
1171 coro->args = newAV (); 1557 coro->args = newAV ();
1172 coro->save = CORO_SAVE_ALL;
1173 coro->flags = CF_NEW; 1558 coro->flags = CF_NEW;
1174 1559
1560 if (coro_first) coro_first->prev = coro;
1561 coro->next = coro_first;
1562 coro_first = coro;
1563
1175 hv = newHV (); 1564 coro->hv = hv = newHV ();
1176 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1565 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)); 1566 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1178 1567
1568 av_extend (coro->args, items - 1);
1179 for (i = 1; i < items; i++) 1569 for (i = 1; i < items; i++)
1180 av_push (coro->args, newSVsv (ST (i))); 1570 av_push (coro->args, newSVsv (ST (i)));
1181} 1571}
1182 OUTPUT: 1572 OUTPUT:
1183 RETVAL 1573 RETVAL
1184 1574
1185int 1575# these not obviously related functions are all rolled into the same xs
1186save (SV *coro, int new_save = -1) 1576# function to increase chances that they all will call transfer with the same
1187 CODE: 1577# stack offset
1188 RETVAL = api_save (coro, new_save);
1189 OUTPUT:
1190 RETVAL
1191
1192void 1578void
1193_set_stacklevel (...) 1579_set_stacklevel (...)
1194 ALIAS: 1580 ALIAS:
1195 Coro::State::transfer = 1 1581 Coro::State::transfer = 1
1196 Coro::schedule = 2 1582 Coro::schedule = 2
1197 Coro::cede = 3 1583 Coro::cede = 3
1198 Coro::cede_notself = 4 1584 Coro::cede_notself = 4
1585 Coro::Event::next = 5
1586 Coro::Event::next_cancel = 6
1199 CODE: 1587 PPCODE:
1200{ 1588{
1201 struct transfer_args ta; 1589 struct transfer_args ta;
1590 int again = 0;
1202 1591
1203 switch (ix) 1592 do
1204 { 1593 {
1594 switch (ix)
1595 {
1205 case 0: 1596 case 0:
1206 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1597 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1207 ta.next = 0; 1598 ta.next = 0;
1208 break; 1599 break;
1209 1600
1210 case 1: 1601 case 1:
1211 if (items != 2) 1602 if (items != 2)
1212 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1603 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1213 1604
1214 prepare_transfer (&ta, ST (0), ST (1)); 1605 prepare_transfer (aTHX_ &ta, ST(0), ST(1));
1215 break; 1606 break;
1216 1607
1217 case 2: 1608 case 2:
1218 prepare_schedule (&ta); 1609 prepare_schedule (aTHX_ &ta);
1219 break; 1610 break;
1220 1611
1221 case 3: 1612 case 3:
1222 prepare_cede (&ta); 1613 prepare_cede (aTHX_ &ta);
1223 break; 1614 break;
1224 1615
1225 case 4: 1616 case 4:
1226 if (!prepare_cede_notself (&ta)) 1617 if (!prepare_cede_notself (aTHX_ &ta))
1227 XSRETURN_EMPTY; 1618 XSRETURN_EMPTY;
1228 1619
1229 break; 1620 break;
1621
1622 case 5:
1623 case 6:
1624 if (items != 1)
1625 croak ("Coro::Event::next (watcher) expects one argument, not %d", items);
1626
1627 {
1628 SV *ev = coroapi.coro_event_next (ST (0), ix == 6, GIMME_V != G_VOID);
1629
1630 if (ev)
1631 {
1632 if (GIMME_V != G_VOID)
1633 {
1634 XPUSHs (ev);
1635 XSRETURN (1);
1636 }
1637 else
1638 XSRETURN_EMPTY;
1639 }
1640 }
1641
1642 prepare_schedule (aTHX_ &ta);
1643 again = 1;
1644 break;
1645 }
1646
1647 /* our caller, entersub, caches *only* this value */
1648 ta.prev->gimme = GIMME_V == G_VOID ? 0
1649 : GIMME_V == G_SCALAR ? 1
1650 : 2;
1651
1652 /* we need to save all local variables, as we might execute a different coroutine when transfer returns */
1653 sp += 2; /* save args */
1654 EXTEND (SP, 4);
1655 PUSHs ((SV *)(intptr_t)items);
1656 PUSHs ((SV *)(intptr_t)ix);
1657 PUSHs ((SV *)(intptr_t)ax);
1658 PUSHs ((SV *)(intptr_t)again);
1659 PUTBACK;
1660 BARRIER;
1661 TRANSFER (ta);
1662 BARRIER;
1663 SPAGAIN;
1664 again = (intptr_t)POPs;
1665 ax = (intptr_t)POPs;
1666 ix = (intptr_t)POPs;
1667 items = (intptr_t)POPs;
1668 sp -= 2; /* restore args */
1230 } 1669 }
1670 while (again);
1231 1671
1232 BARRIER;
1233 TRANSFER (ta);
1234
1235 if (GIMME_V != G_VOID && ta.next != ta.prev) 1672 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1236 XSRETURN_YES; 1673 XSRETURN_YES;
1674
1675 XSRETURN_EMPTY; /* not understood why this is necessary, likely some stack handling bug */
1237} 1676}
1238 1677
1239bool 1678bool
1240_destroy (SV *coro_sv) 1679_destroy (SV *coro_sv)
1241 CODE: 1680 CODE:
1242 RETVAL = coro_state_destroy (SvSTATE (coro_sv)); 1681 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1243 OUTPUT: 1682 OUTPUT:
1244 RETVAL 1683 RETVAL
1245 1684
1246void 1685void
1247_exit (code) 1686_exit (code)
… …
1249 PROTOTYPE: $ 1688 PROTOTYPE: $
1250 CODE: 1689 CODE:
1251 _exit (code); 1690 _exit (code);
1252 1691
1253int 1692int
1693cctx_stacksize (int new_stacksize = 0)
1694 CODE:
1695 RETVAL = coro_stacksize;
1696 if (new_stacksize)
1697 coro_stacksize = new_stacksize;
1698 OUTPUT:
1699 RETVAL
1700
1701int
1254cctx_count () 1702cctx_count ()
1255 CODE: 1703 CODE:
1256 RETVAL = cctx_count; 1704 RETVAL = cctx_count;
1257 OUTPUT: 1705 OUTPUT:
1258 RETVAL 1706 RETVAL
1259 1707
1260int 1708int
1261cctx_idle () 1709cctx_idle ()
1262 CODE: 1710 CODE:
1263 RETVAL = cctx_idle; 1711 RETVAL = cctx_idle[0] + cctx_idle[1] + cctx_idle[2];
1264 OUTPUT: 1712 OUTPUT:
1265 RETVAL 1713 RETVAL
1266 1714
1715void
1716list ()
1717 PPCODE:
1718{
1719 struct coro *coro;
1720 for (coro = coro_first; coro; coro = coro->next)
1721 if (coro->hv)
1722 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1723}
1724
1725void
1726call (Coro::State coro, SV *coderef)
1727 ALIAS:
1728 eval = 1
1729 CODE:
1730{
1731 if (coro->mainstack)
1732 {
1733 struct coro temp;
1734
1735 if (!(coro->flags & CF_RUNNING))
1736 {
1737 save_perl (aTHX_ &temp);
1738 load_perl (aTHX_ coro);
1739 }
1740
1741 {
1742 dSP;
1743 ENTER;
1744 SAVETMPS;
1745 PUTBACK;
1746 PUSHSTACK;
1747 PUSHMARK (SP);
1748
1749 if (ix)
1750 eval_sv (coderef, 0);
1751 else
1752 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1753
1754 POPSTACK;
1755 FREETMPS;
1756 LEAVE;
1757 }
1758
1759 if (!(coro->flags & CF_RUNNING))
1760 {
1761 save_perl (aTHX_ coro);
1762 load_perl (aTHX_ &temp);
1763 }
1764 }
1765}
1766
1767SV *
1768is_ready (Coro::State coro)
1769 PROTOTYPE: $
1770 ALIAS:
1771 is_ready = CF_READY
1772 is_running = CF_RUNNING
1773 is_new = CF_NEW
1774 is_destroyed = CF_DESTROYED
1775 CODE:
1776 RETVAL = boolSV (coro->flags & ix);
1777 OUTPUT:
1778 RETVAL
1779
1780void
1781api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1782
1783SV *
1784has_stack (Coro::State coro)
1785 PROTOTYPE: $
1786 CODE:
1787 RETVAL = boolSV (!!coro->cctx);
1788 OUTPUT:
1789 RETVAL
1790
1791int
1792is_traced (Coro::State coro)
1793 PROTOTYPE: $
1794 CODE:
1795 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1796 OUTPUT:
1797 RETVAL
1798
1799IV
1800rss (Coro::State coro)
1801 PROTOTYPE: $
1802 ALIAS:
1803 usecount = 1
1804 CODE:
1805 switch (ix)
1806 {
1807 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1808 case 1: RETVAL = coro->usecount; break;
1809 }
1810 OUTPUT:
1811 RETVAL
1812
1813
1267MODULE = Coro::State PACKAGE = Coro 1814MODULE = Coro::State PACKAGE = Coro
1268 1815
1269BOOT: 1816BOOT:
1270{ 1817{
1271 int i; 1818 int i;
1272 1819
1820 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1821 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1822 av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
1823
1824 coro_current = coro_get_sv ("Coro::current", FALSE);
1825 SvREADONLY_on (coro_current);
1826
1273 coro_stash = gv_stashpv ("Coro", TRUE); 1827 coro_stash = gv_stashpv ("Coro", TRUE);
1274 1828
1275 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1829 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1276 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1830 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1277 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1831 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1278 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1832 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1279 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1833 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1280 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1834 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1281 1835
1282 coro_current = get_sv ("Coro::current", FALSE);
1283 SvREADONLY_on (coro_current);
1284
1285 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1836 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1286 coro_ready[i] = newAV (); 1837 coro_ready[i] = newAV ();
1287 1838
1288 { 1839 {
1289 SV *sv = perl_get_sv("Coro::API", 1); 1840 SV *sv = perl_get_sv ("Coro::API", TRUE);
1841 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1290 1842
1291 coroapi.schedule = api_schedule; 1843 coroapi.schedule = api_schedule;
1292 coroapi.save = api_save;
1293 coroapi.cede = api_cede; 1844 coroapi.cede = api_cede;
1294 coroapi.cede_notself = api_cede_notself; 1845 coroapi.cede_notself = api_cede_notself;
1295 coroapi.ready = api_ready; 1846 coroapi.ready = api_ready;
1296 coroapi.is_ready = api_is_ready; 1847 coroapi.is_ready = api_is_ready;
1297 coroapi.nready = &coro_nready; 1848 coroapi.nready = &coro_nready;
… …
1338 CODE: 1889 CODE:
1339 RETVAL = boolSV (api_ready (self)); 1890 RETVAL = boolSV (api_ready (self));
1340 OUTPUT: 1891 OUTPUT:
1341 RETVAL 1892 RETVAL
1342 1893
1343SV *
1344is_ready (SV *self)
1345 PROTOTYPE: $
1346 CODE:
1347 RETVAL = boolSV (api_is_ready (self));
1348 OUTPUT:
1349 RETVAL
1350
1351int 1894int
1352nready (...) 1895nready (...)
1353 PROTOTYPE: 1896 PROTOTYPE:
1354 CODE: 1897 CODE:
1355 RETVAL = coro_nready; 1898 RETVAL = coro_nready;
1356 OUTPUT: 1899 OUTPUT:
1357 RETVAL 1900 RETVAL
1358 1901
1902void
1903throw (Coro::State self, SV *throw = &PL_sv_undef)
1904 PROTOTYPE: $;$
1905 CODE:
1906 SvREFCNT_dec (self->throw);
1907 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1908
1909# for async_pool speedup
1910void
1911_pool_1 (SV *cb)
1912 CODE:
1913{
1914 struct coro *coro = SvSTATE (coro_current);
1915 HV *hv = (HV *)SvRV (coro_current);
1916 AV *defav = GvAV (PL_defgv);
1917 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
1918 AV *invoke_av;
1919 int i, len;
1920
1921 if (!invoke)
1922 croak ("\3async_pool terminate\2\n");
1923
1924 SvREFCNT_dec (coro->saved_deffh);
1925 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1926
1927 hv_store (hv, "desc", sizeof ("desc") - 1,
1928 newSVpvn (strpair ("[async_pool]")), 0);
1929
1930 invoke_av = (AV *)SvRV (invoke);
1931 len = av_len (invoke_av);
1932
1933 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1934
1935 if (len > 0)
1936 {
1937 av_fill (defav, len - 1);
1938 for (i = 0; i < len; ++i)
1939 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1940 }
1941
1942 SvREFCNT_dec (invoke);
1943}
1944
1945void
1946_pool_2 (SV *cb)
1947 CODE:
1948{
1949 struct coro *coro = SvSTATE (coro_current);
1950
1951 sv_setsv (cb, &PL_sv_undef);
1952
1953 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1954 coro->saved_deffh = 0;
1955
1956 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1957 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1958 croak ("\3async_pool terminate\2\n");
1959
1960 av_clear (GvAV (PL_defgv));
1961 hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
1962 newSVpvn (strpair ("[async_pool idle]")), 0);
1963
1964 coro->prio = 0;
1965
1966 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1967 api_trace (coro_current, 0);
1968
1969 av_push (av_async_pool, newSVsv (coro_current));
1970}
1971
1972
1359MODULE = Coro::State PACKAGE = Coro::AIO 1973MODULE = Coro::State PACKAGE = Coro::AIO
1360 1974
1361SV * 1975SV *
1362_get_state () 1976_get_state ()
1363 CODE: 1977 CODE:

Diff Legend

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