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Comparing Coro/Coro/State.xs (file contents):
Revision 1.135 by root, Fri Jan 5 18:25:51 2007 UTC vs.
Revision 1.213 by root, Thu Oct 11 00:40:48 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/* helper storage struct for Coro::AIO */
117struct io_state 137struct io_state
118{ 138{
119 int errorno; 139 int errorno;
120 I32 laststype; 140 I32 laststype;
121 int laststatval; 141 int laststatval;
122 Stat_t statcache; 142 Stat_t statcache;
123}; 143};
124 144
145static size_t coro_stacksize = CORO_STACKSIZE;
125static struct CoroAPI coroapi; 146static struct CoroAPI coroapi;
126static AV *main_mainstack; /* used to differentiate between $main and others */ 147static AV *main_mainstack; /* used to differentiate between $main and others */
148static JMPENV *main_top_env;
127static HV *coro_state_stash, *coro_stash; 149static HV *coro_state_stash, *coro_stash;
128static SV *coro_mortal; /* will be freed after next transfer */ 150static SV *coro_mortal; /* will be freed after next transfer */
129 151
152static GV *irsgv; /* $/ */
153static GV *stdoutgv; /* *STDOUT */
154
155static HV *hv_sig; /* %SIG */
156static SV *sv_diehook;
157static SV *sv_warnhook;
158
159/* async_pool helper stuff */
160static SV *sv_pool_rss;
161static SV *sv_pool_size;
162static AV *av_async_pool;
163
130static struct coro_cctx *cctx_first; 164static struct coro_cctx *cctx_first;
131static int cctx_count, cctx_idle; 165static int cctx_count, cctx_idle;
166
167enum {
168 CC_MAPPED = 0x01,
169 CC_NOREUSE = 0x02, /* throw this away after tracing */
170 CC_TRACE = 0x04,
171 CC_TRACE_SUB = 0x08, /* trace sub calls */
172 CC_TRACE_LINE = 0x10, /* trace each statement */
173 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
174};
132 175
133/* this is a structure representing a c-level coroutine */ 176/* this is a structure representing a c-level coroutine */
134typedef struct coro_cctx { 177typedef struct coro_cctx {
135 struct coro_cctx *next; 178 struct coro_cctx *next;
136 179
137 /* the stack */ 180 /* the stack */
138 void *sptr; 181 void *sptr;
139 long ssize; /* positive == mmap, otherwise malloc */ 182 size_t ssize;
140 183
141 /* cpu state */ 184 /* cpu state */
142 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 185 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
143 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 186 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
144 JMPENV *top_env; 187 JMPENV *top_env;
145 coro_context cctx; 188 coro_context cctx;
146 189
147 int inuse;
148
149#if USE_VALGRIND 190#if CORO_USE_VALGRIND
150 int valgrind_id; 191 int valgrind_id;
151#endif 192#endif
193 unsigned char flags;
152} coro_cctx; 194} coro_cctx;
153 195
154enum { 196enum {
155 CF_RUNNING = 0x0001, /* coroutine is running */ 197 CF_RUNNING = 0x0001, /* coroutine is running */
156 CF_READY = 0x0002, /* coroutine is ready */ 198 CF_READY = 0x0002, /* coroutine is ready */
157 CF_NEW = 0x0004, /* has never been switched to */ 199 CF_NEW = 0x0004, /* has never been switched to */
158 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 200 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
159}; 201};
160 202
203/* the structure where most of the perl state is stored, overlaid on the cxstack */
204typedef struct {
205 SV *defsv;
206 AV *defav;
207 SV *errsv;
208 SV *irsgv;
209#define VAR(name,type) type name;
210# include "state.h"
211#undef VAR
212} perl_slots;
213
214#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
215
161/* this is a structure representing a perl-level coroutine */ 216/* this is a structure representing a perl-level coroutine */
162struct coro { 217struct coro {
163 /* the c coroutine allocated to this perl coroutine, if any */ 218 /* the c coroutine allocated to this perl coroutine, if any */
164 coro_cctx *cctx; 219 coro_cctx *cctx;
165 220
221 /* process data */
222 AV *mainstack;
223 perl_slots *slot; /* basically the saved sp */
224
166 /* data associated with this coroutine (initial args) */ 225 AV *args; /* data associated with this coroutine (initial args) */
167 AV *args; 226 int refcnt; /* coroutines are refcounted, yes */
168 int refcnt;
169 int save; /* CORO_SAVE flags */
170 int flags; /* CF_ flags */ 227 int flags; /* CF_ flags */
228 HV *hv; /* the perl hash associated with this coro, if any */
171 229
172 /* optionally saved, might be zero */ 230 /* statistics */
173 AV *defav; /* @_ */ 231 int usecount; /* number of transfers to this coro */
174 SV *defsv; /* $_ */
175 SV *errsv; /* $@ */
176 SV *irssv; /* $/ */
177 SV *irssv_sv; /* real $/ cache */
178
179#define VAR(name,type) type name;
180# include "state.h"
181#undef VAR
182 232
183 /* coro process data */ 233 /* coro process data */
184 int prio; 234 int prio;
235 SV *throw; /* exception to be thrown */
236
237 /* async_pool */
238 SV *saved_deffh;
239
240 /* linked list */
241 struct coro *next, *prev;
185}; 242};
186 243
187typedef struct coro *Coro__State; 244typedef struct coro *Coro__State;
188typedef struct coro *Coro__State_or_hashref; 245typedef struct coro *Coro__State_or_hashref;
189 246
247/** Coro ********************************************************************/
248
249#define PRIO_MAX 3
250#define PRIO_HIGH 1
251#define PRIO_NORMAL 0
252#define PRIO_LOW -1
253#define PRIO_IDLE -3
254#define PRIO_MIN -4
255
256/* for Coro.pm */
257static SV *coro_current;
258static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
259static int coro_nready;
260static struct coro *coro_first;
261
262/** lowlevel stuff **********************************************************/
263
264static SV *
265coro_get_sv (pTHX_ const char *name, int create)
266{
267#if PERL_VERSION_ATLEAST (5,9,0)
268 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
269 get_sv (name, create);
270#endif
271 return get_sv (name, create);
272}
273
190static AV * 274static AV *
275coro_get_av (pTHX_ const char *name, int create)
276{
277#if PERL_VERSION_ATLEAST (5,9,0)
278 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
279 get_av (name, create);
280#endif
281 return get_av (name, create);
282}
283
284static HV *
285coro_get_hv (pTHX_ const char *name, int create)
286{
287#if PERL_VERSION_ATLEAST (5,9,0)
288 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
289 get_hv (name, create);
290#endif
291 return get_hv (name, create);
292}
293
294static AV *
191coro_clone_padlist (CV *cv) 295coro_clone_padlist (pTHX_ CV *cv)
192{ 296{
193 AV *padlist = CvPADLIST (cv); 297 AV *padlist = CvPADLIST (cv);
194 AV *newpadlist, *newpad; 298 AV *newpadlist, *newpad;
195 299
196 newpadlist = newAV (); 300 newpadlist = newAV ();
… …
208 312
209 return newpadlist; 313 return newpadlist;
210} 314}
211 315
212static void 316static void
213free_padlist (AV *padlist) 317free_padlist (pTHX_ AV *padlist)
214{ 318{
215 /* may be during global destruction */ 319 /* may be during global destruction */
216 if (SvREFCNT (padlist)) 320 if (SvREFCNT (padlist))
217 { 321 {
218 I32 i = AvFILLp (padlist); 322 I32 i = AvFILLp (padlist);
… …
239 AV *padlist; 343 AV *padlist;
240 AV *av = (AV *)mg->mg_obj; 344 AV *av = (AV *)mg->mg_obj;
241 345
242 /* casting is fun. */ 346 /* casting is fun. */
243 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 347 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
244 free_padlist (padlist); 348 free_padlist (aTHX_ padlist);
245 349
246 SvREFCNT_dec (av); 350 SvREFCNT_dec (av);
247 351
248 return 0; 352 return 0;
249} 353}
… …
257 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 361 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
258 ? SvMAGIC (cv) \ 362 ? SvMAGIC (cv) \
259 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 363 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
260 : 0 364 : 0
261 365
366static struct coro *
367SvSTATE_ (pTHX_ SV *coro)
368{
369 HV *stash;
370 MAGIC *mg;
371
372 if (SvROK (coro))
373 coro = SvRV (coro);
374
375 if (expect_false (SvTYPE (coro) != SVt_PVHV))
376 croak ("Coro::State object required");
377
378 stash = SvSTASH (coro);
379 if (expect_false (stash != coro_stash && stash != coro_state_stash))
380 {
381 /* very slow, but rare, check */
382 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
383 croak ("Coro::State object required");
384 }
385
386 mg = CORO_MAGIC (coro);
387 return (struct coro *)mg->mg_ptr;
388}
389
390#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
391
262/* the next two functions merely cache the padlists */ 392/* the next two functions merely cache the padlists */
263static void 393static void
264get_padlist (CV *cv) 394get_padlist (pTHX_ CV *cv)
265{ 395{
266 MAGIC *mg = CORO_MAGIC (cv); 396 MAGIC *mg = CORO_MAGIC (cv);
267 AV *av; 397 AV *av;
268 398
269 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 399 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
270 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 400 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
271 else 401 else
272 { 402 {
273#if PREFER_PERL_FUNCTIONS 403#if CORO_PREFER_PERL_FUNCTIONS
274 /* this is probably cleaner, but also slower? */ 404 /* this is probably cleaner, but also slower? */
275 CV *cp = Perl_cv_clone (cv); 405 CV *cp = Perl_cv_clone (cv);
276 CvPADLIST (cv) = CvPADLIST (cp); 406 CvPADLIST (cv) = CvPADLIST (cp);
277 CvPADLIST (cp) = 0; 407 CvPADLIST (cp) = 0;
278 SvREFCNT_dec (cp); 408 SvREFCNT_dec (cp);
279#else 409#else
280 CvPADLIST (cv) = coro_clone_padlist (cv); 410 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
281#endif 411#endif
282 } 412 }
283} 413}
284 414
285static void 415static void
286put_padlist (CV *cv) 416put_padlist (pTHX_ CV *cv)
287{ 417{
288 MAGIC *mg = CORO_MAGIC (cv); 418 MAGIC *mg = CORO_MAGIC (cv);
289 AV *av; 419 AV *av;
290 420
291 if (!mg) 421 if (expect_false (!mg))
292 { 422 {
293 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); 423 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
294 mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 424 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
295 mg->mg_virtual = &vtbl_coro; 425 mg->mg_virtual = &vtbl_coro;
296 mg->mg_obj = (SV *)newAV (); 426 mg->mg_obj = (SV *)newAV ();
297 } 427 }
298 428
299 av = (AV *)mg->mg_obj; 429 av = (AV *)mg->mg_obj;
300 430
301 if (AvFILLp (av) >= AvMAX (av)) 431 if (expect_false (AvFILLp (av) >= AvMAX (av)))
302 av_extend (av, AvMAX (av) + 1); 432 av_extend (av, AvMAX (av) + 1);
303 433
304 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 434 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
305} 435}
306 436
307#define SB do { 437/** load & save, init *******************************************************/
308#define SE } while (0)
309 438
310#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
311
312static void 439static void
313load_perl (Coro__State c) 440load_perl (pTHX_ Coro__State c)
314{ 441{
442 perl_slots *slot = c->slot;
443 c->slot = 0;
444
445 PL_mainstack = c->mainstack;
446
447 GvSV (PL_defgv) = slot->defsv;
448 GvAV (PL_defgv) = slot->defav;
449 GvSV (PL_errgv) = slot->errsv;
450 GvSV (irsgv) = slot->irsgv;
451
315#define VAR(name,type) PL_ ## name = c->name; 452 #define VAR(name,type) PL_ ## name = slot->name;
316# include "state.h" 453 # include "state.h"
317#undef VAR 454 #undef VAR
318 455
319 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 456 /*hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);*/
320 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 457 /*hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);*/
321 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
322 if (c->irssv)
323 {
324 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
325 SvREFCNT_dec (c->irssv);
326 else
327 {
328 REPLACE_SV (PL_rs, c->irssv);
329 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
330 sv_setsv (c->irssv_sv, PL_rs);
331 }
332 }
333 458
334 { 459 {
335 dSP; 460 dSP;
461
336 CV *cv; 462 CV *cv;
337 463
338 /* now do the ugly restore mess */ 464 /* now do the ugly restore mess */
339 while ((cv = (CV *)POPs)) 465 while (expect_true (cv = (CV *)POPs))
340 { 466 {
341 put_padlist (cv); /* mark this padlist as available */ 467 put_padlist (aTHX_ cv); /* mark this padlist as available */
342 CvDEPTH (cv) = PTR2IV (POPs); 468 CvDEPTH (cv) = PTR2IV (POPs);
343 CvPADLIST (cv) = (AV *)POPs; 469 CvPADLIST (cv) = (AV *)POPs;
344 } 470 }
345 471
346 PUTBACK; 472 PUTBACK;
347 } 473 }
348} 474}
349 475
350static void 476static void
351save_perl (Coro__State c) 477save_perl (pTHX_ Coro__State c)
352{ 478{
353 { 479 {
354 dSP; 480 dSP;
355 I32 cxix = cxstack_ix; 481 I32 cxix = cxstack_ix;
356 PERL_CONTEXT *ccstk = cxstack; 482 PERL_CONTEXT *ccstk = cxstack;
… …
359 /* 485 /*
360 * the worst thing you can imagine happens first - we have to save 486 * the worst thing you can imagine happens first - we have to save
361 * (and reinitialize) all cv's in the whole callchain :( 487 * (and reinitialize) all cv's in the whole callchain :(
362 */ 488 */
363 489
364 EXTEND (SP, 3 + 1);
365 PUSHs (Nullsv); 490 XPUSHs (Nullsv);
366 /* this loop was inspired by pp_caller */ 491 /* this loop was inspired by pp_caller */
367 for (;;) 492 for (;;)
368 { 493 {
369 while (cxix >= 0) 494 while (expect_true (cxix >= 0))
370 { 495 {
371 PERL_CONTEXT *cx = &ccstk[cxix--]; 496 PERL_CONTEXT *cx = &ccstk[cxix--];
372 497
373 if (CxTYPE (cx) == CXt_SUB) 498 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
374 { 499 {
375 CV *cv = cx->blk_sub.cv; 500 CV *cv = cx->blk_sub.cv;
376 501
377 if (CvDEPTH (cv)) 502 if (expect_true (CvDEPTH (cv)))
378 { 503 {
379 EXTEND (SP, 3); 504 EXTEND (SP, 3);
380 PUSHs ((SV *)CvPADLIST (cv)); 505 PUSHs ((SV *)CvPADLIST (cv));
381 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 506 PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
382 PUSHs ((SV *)cv); 507 PUSHs ((SV *)cv);
383 508
384 CvDEPTH (cv) = 0; 509 CvDEPTH (cv) = 0;
385 get_padlist (cv); 510 get_padlist (aTHX_ cv);
386 } 511 }
387 } 512 }
388 } 513 }
389 514
390 if (top_si->si_type == PERLSI_MAIN) 515 if (expect_true (top_si->si_type == PERLSI_MAIN))
391 break; 516 break;
392 517
393 top_si = top_si->si_prev; 518 top_si = top_si->si_prev;
394 ccstk = top_si->si_cxstack; 519 ccstk = top_si->si_cxstack;
395 cxix = top_si->si_cxix; 520 cxix = top_si->si_cxix;
396 } 521 }
397 522
398 PUTBACK; 523 PUTBACK;
399 } 524 }
400 525
401 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 526 /* allocate some space on the context stack for our purposes */
402 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 527 /* we manually unroll here, as usually 2 slots is enough */
403 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 528 if (SLOT_COUNT >= 1) CXINC;
404 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 529 if (SLOT_COUNT >= 2) CXINC;
530 if (SLOT_COUNT >= 3) CXINC;
531 {
532 int i;
533 for (i = 3; i < SLOT_COUNT; ++i)
534 CXINC;
535 }
536 cxstack_ix -= SLOT_COUNT; /* undo allocation */
405 537
538 c->mainstack = PL_mainstack;
539
540 {
541 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
542
543 slot->defav = GvAV (PL_defgv);
544 slot->defsv = DEFSV;
545 slot->errsv = ERRSV;
546 slot->irsgv = GvSV (irsgv);
547
406#define VAR(name,type)c->name = PL_ ## name; 548 #define VAR(name,type) slot->name = PL_ ## name;
407# include "state.h" 549 # include "state.h"
408#undef VAR 550 #undef VAR
551 }
409} 552}
410 553
411/* 554/*
412 * allocate various perl stacks. This is an exact copy 555 * allocate various perl stacks. This is an exact copy
413 * of perl.c:init_stacks, except that it uses less memory 556 * of perl.c:init_stacks, except that it uses less memory
414 * on the (sometimes correct) assumption that coroutines do 557 * on the (sometimes correct) assumption that coroutines do
415 * not usually need a lot of stackspace. 558 * not usually need a lot of stackspace.
416 */ 559 */
417#if PREFER_PERL_FUNCTIONS 560#if CORO_PREFER_PERL_FUNCTIONS
418# define coro_init_stacks init_stacks 561# define coro_init_stacks init_stacks
419#else 562#else
420static void 563static void
421coro_init_stacks () 564coro_init_stacks (pTHX)
422{ 565{
423 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 566 PL_curstackinfo = new_stackinfo(32, 8);
424 PL_curstackinfo->si_type = PERLSI_MAIN; 567 PL_curstackinfo->si_type = PERLSI_MAIN;
425 PL_curstack = PL_curstackinfo->si_stack; 568 PL_curstack = PL_curstackinfo->si_stack;
426 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 569 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
427 570
428 PL_stack_base = AvARRAY(PL_curstack); 571 PL_stack_base = AvARRAY(PL_curstack);
429 PL_stack_sp = PL_stack_base; 572 PL_stack_sp = PL_stack_base;
430 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 573 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
431 574
432 New(50,PL_tmps_stack,128,SV*); 575 New(50,PL_tmps_stack,32,SV*);
433 PL_tmps_floor = -1; 576 PL_tmps_floor = -1;
434 PL_tmps_ix = -1; 577 PL_tmps_ix = -1;
435 PL_tmps_max = 128; 578 PL_tmps_max = 32;
436 579
437 New(54,PL_markstack,32,I32); 580 New(54,PL_markstack,16,I32);
438 PL_markstack_ptr = PL_markstack; 581 PL_markstack_ptr = PL_markstack;
439 PL_markstack_max = PL_markstack + 32; 582 PL_markstack_max = PL_markstack + 16;
440 583
441#ifdef SET_MARK_OFFSET 584#ifdef SET_MARK_OFFSET
442 SET_MARK_OFFSET; 585 SET_MARK_OFFSET;
443#endif 586#endif
444 587
445 New(54,PL_scopestack,32,I32); 588 New(54,PL_scopestack,8,I32);
446 PL_scopestack_ix = 0; 589 PL_scopestack_ix = 0;
447 PL_scopestack_max = 32; 590 PL_scopestack_max = 8;
448 591
449 New(54,PL_savestack,64,ANY); 592 New(54,PL_savestack,24,ANY);
450 PL_savestack_ix = 0; 593 PL_savestack_ix = 0;
451 PL_savestack_max = 64; 594 PL_savestack_max = 24;
452 595
453#if !PERL_VERSION_ATLEAST (5,9,0) 596#if !PERL_VERSION_ATLEAST (5,9,0)
454 New(54,PL_retstack,16,OP*); 597 New(54,PL_retstack,4,OP*);
455 PL_retstack_ix = 0; 598 PL_retstack_ix = 0;
456 PL_retstack_max = 16; 599 PL_retstack_max = 4;
457#endif 600#endif
458} 601}
459#endif 602#endif
460 603
461/* 604/*
462 * destroy the stacks, the callchain etc... 605 * destroy the stacks, the callchain etc...
463 */ 606 */
464static void 607static void
465coro_destroy_stacks () 608coro_destroy_stacks (pTHX)
466{ 609{
467 if (!IN_DESTRUCT)
468 {
469 /* restore all saved variables and stuff */
470 LEAVE_SCOPE (0);
471 assert (PL_tmps_floor == -1);
472
473 /* free all temporaries */
474 FREETMPS;
475 assert (PL_tmps_ix == -1);
476
477 /* unwind all extra stacks */
478 POPSTACK_TO (PL_mainstack);
479
480 /* unwind main stack */
481 dounwind (-1);
482 }
483
484 while (PL_curstackinfo->si_next) 610 while (PL_curstackinfo->si_next)
485 PL_curstackinfo = PL_curstackinfo->si_next; 611 PL_curstackinfo = PL_curstackinfo->si_next;
486 612
487 while (PL_curstackinfo) 613 while (PL_curstackinfo)
488 { 614 {
… …
503#if !PERL_VERSION_ATLEAST (5,9,0) 629#if !PERL_VERSION_ATLEAST (5,9,0)
504 Safefree (PL_retstack); 630 Safefree (PL_retstack);
505#endif 631#endif
506} 632}
507 633
508static void 634static size_t
509setup_coro (struct coro *coro) 635coro_rss (pTHX_ struct coro *coro)
636{
637 size_t rss = sizeof (*coro);
638
639 if (coro->mainstack)
640 {
641 perl_slots tmp_slot;
642 perl_slots *slot;
643
644 if (coro->flags & CF_RUNNING)
645 {
646 slot = &tmp_slot;
647
648 #define VAR(name,type) slot->name = PL_ ## name;
649 # include "state.h"
650 #undef VAR
651 }
652 else
653 slot = coro->slot;
654
655 rss += sizeof (slot->curstackinfo);
656 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
657 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
658 rss += slot->tmps_max * sizeof (SV *);
659 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
660 rss += slot->scopestack_max * sizeof (I32);
661 rss += slot->savestack_max * sizeof (ANY);
662
663#if !PERL_VERSION_ATLEAST (5,9,0)
664 rss += slot->retstack_max * sizeof (OP *);
665#endif
666 }
667
668 return rss;
669}
670
671/** coroutine stack handling ************************************************/
672
673static void
674coro_setup (pTHX_ struct coro *coro)
510{ 675{
511 /* 676 /*
512 * emulate part of the perl startup here. 677 * emulate part of the perl startup here.
513 */ 678 */
514
515 coro_init_stacks (); 679 coro_init_stacks (aTHX);
516 680
681 PL_runops = RUNOPS_DEFAULT;
517 PL_curcop = &PL_compiling; 682 PL_curcop = &PL_compiling;
518 PL_in_eval = EVAL_NULL; 683 PL_in_eval = EVAL_NULL;
684 PL_comppad = 0;
519 PL_curpm = 0; 685 PL_curpm = 0;
686 PL_curpad = 0;
520 PL_localizing = 0; 687 PL_localizing = 0;
521 PL_dirty = 0; 688 PL_dirty = 0;
522 PL_restartop = 0; 689 PL_restartop = 0;
690 PL_diehook = 0; hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);
691 PL_warnhook = 0; hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);
692
693 GvSV (PL_defgv) = newSV (0);
694 GvAV (PL_defgv) = coro->args; coro->args = 0;
695 GvSV (PL_errgv) = newSV (0);
696 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
697 PL_rs = newSVsv (GvSV (irsgv));
698 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
523 699
524 { 700 {
525 dSP; 701 dSP;
526 LOGOP myop; 702 LOGOP myop;
527 703
528 SvREFCNT_dec (GvAV (PL_defgv));
529 GvAV (PL_defgv) = coro->args; coro->args = 0;
530
531 Zero (&myop, 1, LOGOP); 704 Zero (&myop, 1, LOGOP);
532 myop.op_next = Nullop; 705 myop.op_next = Nullop;
533 myop.op_flags = OPf_WANT_VOID; 706 myop.op_flags = OPf_WANT_VOID;
534 707
535 PUSHMARK (SP); 708 PUSHMARK (SP);
536 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 709 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
537 PUTBACK; 710 PUTBACK;
538 PL_op = (OP *)&myop; 711 PL_op = (OP *)&myop;
539 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 712 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
540 SPAGAIN; 713 SPAGAIN;
541 } 714 }
542 715
543 ENTER; /* necessary e.g. for dounwind */ 716 /* this newly created coroutine might be run on an existing cctx which most
717 * likely was suspended in set_stacklevel, called from entersub.
718 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
719 * so we ENTER here for symmetry
720 */
721 ENTER;
544} 722}
545 723
546static void 724static void
725coro_destroy (pTHX_ struct coro *coro)
726{
727 if (!IN_DESTRUCT)
728 {
729 /* restore all saved variables and stuff */
730 LEAVE_SCOPE (0);
731 assert (PL_tmps_floor == -1);
732
733 /* free all temporaries */
734 FREETMPS;
735 assert (PL_tmps_ix == -1);
736
737 /* unwind all extra stacks */
738 POPSTACK_TO (PL_mainstack);
739
740 /* unwind main stack */
741 dounwind (-1);
742 }
743
744 SvREFCNT_dec (GvSV (PL_defgv));
745 SvREFCNT_dec (GvAV (PL_defgv));
746 SvREFCNT_dec (GvSV (PL_errgv));
747 SvREFCNT_dec (PL_defoutgv);
748 SvREFCNT_dec (PL_rs);
749 SvREFCNT_dec (GvSV (irsgv));
750
751 SvREFCNT_dec (PL_diehook);
752 SvREFCNT_dec (PL_warnhook);
753
754 SvREFCNT_dec (coro->saved_deffh);
755 SvREFCNT_dec (coro->throw);
756
757 coro_destroy_stacks (aTHX);
758}
759
760static void
547free_coro_mortal () 761free_coro_mortal (pTHX)
548{ 762{
549 if (coro_mortal) 763 if (expect_true (coro_mortal))
550 { 764 {
551 SvREFCNT_dec (coro_mortal); 765 SvREFCNT_dec (coro_mortal);
552 coro_mortal = 0; 766 coro_mortal = 0;
553 } 767 }
554} 768}
555 769
770static int
771runops_trace (pTHX)
772{
773 COP *oldcop = 0;
774 int oldcxix = -2;
775 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
776 coro_cctx *cctx = coro->cctx;
777
778 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
779 {
780 PERL_ASYNC_CHECK ();
781
782 if (cctx->flags & CC_TRACE_ALL)
783 {
784 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
785 {
786 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
787 SV **bot, **top;
788 AV *av = newAV (); /* return values */
789 SV **cb;
790 dSP;
791
792 GV *gv = CvGV (cx->blk_sub.cv);
793 SV *fullname = sv_2mortal (newSV (0));
794 if (isGV (gv))
795 gv_efullname3 (fullname, gv, 0);
796
797 bot = PL_stack_base + cx->blk_oldsp + 1;
798 top = cx->blk_gimme == G_ARRAY ? SP + 1
799 : cx->blk_gimme == G_SCALAR ? bot + 1
800 : bot;
801
802 av_extend (av, top - bot);
803 while (bot < top)
804 av_push (av, SvREFCNT_inc (*bot++));
805
806 PL_runops = RUNOPS_DEFAULT;
807 ENTER;
808 SAVETMPS;
809 EXTEND (SP, 3);
810 PUSHMARK (SP);
811 PUSHs (&PL_sv_no);
812 PUSHs (fullname);
813 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
814 PUTBACK;
815 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
816 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
817 SPAGAIN;
818 FREETMPS;
819 LEAVE;
820 PL_runops = runops_trace;
821 }
822
823 if (oldcop != PL_curcop)
824 {
825 oldcop = PL_curcop;
826
827 if (PL_curcop != &PL_compiling)
828 {
829 SV **cb;
830
831 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
832 {
833 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
834
835 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
836 {
837 runops_proc_t old_runops = PL_runops;
838 dSP;
839 GV *gv = CvGV (cx->blk_sub.cv);
840 SV *fullname = sv_2mortal (newSV (0));
841
842 if (isGV (gv))
843 gv_efullname3 (fullname, gv, 0);
844
845 PL_runops = RUNOPS_DEFAULT;
846 ENTER;
847 SAVETMPS;
848 EXTEND (SP, 3);
849 PUSHMARK (SP);
850 PUSHs (&PL_sv_yes);
851 PUSHs (fullname);
852 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
853 PUTBACK;
854 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
855 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
856 SPAGAIN;
857 FREETMPS;
858 LEAVE;
859 PL_runops = runops_trace;
860 }
861
862 oldcxix = cxstack_ix;
863 }
864
865 if (cctx->flags & CC_TRACE_LINE)
866 {
867 dSP;
868
869 PL_runops = RUNOPS_DEFAULT;
870 ENTER;
871 SAVETMPS;
872 EXTEND (SP, 3);
873 PL_runops = RUNOPS_DEFAULT;
874 PUSHMARK (SP);
875 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
876 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
877 PUTBACK;
878 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
879 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
880 SPAGAIN;
881 FREETMPS;
882 LEAVE;
883 PL_runops = runops_trace;
884 }
885 }
886 }
887 }
888 }
889
890 TAINT_NOT;
891 return 0;
892}
893
556/* inject a fake call to Coro::State::_cctx_init into the execution */ 894/* inject a fake call to Coro::State::_cctx_init into the execution */
895/* _cctx_init should be careful, as it could be called at almost any time */
896/* during execution of a perl program */
557static void NOINLINE 897static void NOINLINE
558prepare_cctx (coro_cctx *cctx) 898cctx_prepare (pTHX_ coro_cctx *cctx)
559{ 899{
560 dSP; 900 dSP;
561 LOGOP myop; 901 LOGOP myop;
902
903 PL_top_env = &PL_start_env;
904
905 if (cctx->flags & CC_TRACE)
906 PL_runops = runops_trace;
562 907
563 Zero (&myop, 1, LOGOP); 908 Zero (&myop, 1, LOGOP);
564 myop.op_next = PL_op; 909 myop.op_next = PL_op;
565 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 910 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
566 911
… …
572 PL_op = (OP *)&myop; 917 PL_op = (OP *)&myop;
573 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 918 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
574 SPAGAIN; 919 SPAGAIN;
575} 920}
576 921
922/*
923 * this is a _very_ stripped down perl interpreter ;)
924 */
577static void 925static void
578coro_run (void *arg) 926cctx_run (void *arg)
579{ 927{
928 dTHX;
929
580 /* coro_run is the alternative tail of transfer(), so unlock here. */ 930 /* cctx_run is the alternative tail of transfer(), so unlock here. */
581 UNLOCK; 931 UNLOCK;
582 932
583 /* 933 /* we now skip the entersub that lead to transfer() */
584 * this is a _very_ stripped down perl interpreter ;) 934 PL_op = PL_op->op_next;
585 */
586 PL_top_env = &PL_start_env;
587 935
588 /* inject call to cctx_init */ 936 /* inject a fake subroutine call to cctx_init */
589 prepare_cctx ((coro_cctx *)arg); 937 cctx_prepare (aTHX_ (coro_cctx *)arg);
590 938
591 /* somebody will hit me for both perl_run and PL_restartop */ 939 /* somebody or something will hit me for both perl_run and PL_restartop */
592 PL_restartop = PL_op; 940 PL_restartop = PL_op;
593 perl_run (PL_curinterp); 941 perl_run (PL_curinterp);
594 942
595 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 943 /*
596 abort (); 944 * If perl-run returns we assume exit() was being called or the coro
945 * fell off the end, which seems to be the only valid (non-bug)
946 * reason for perl_run to return. We try to exit by jumping to the
947 * bootstrap-time "top" top_env, as we cannot restore the "main"
948 * coroutine as Coro has no such concept
949 */
950 PL_top_env = main_top_env;
951 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
597} 952}
598 953
599static coro_cctx * 954static coro_cctx *
600cctx_new () 955cctx_new ()
601{ 956{
602 coro_cctx *cctx; 957 coro_cctx *cctx;
958 void *stack_start;
959 size_t stack_size;
603 960
604 ++cctx_count; 961 ++cctx_count;
605 962
606 Newz (0, cctx, 1, coro_cctx); 963 Newz (0, cctx, 1, coro_cctx);
607 964
608#if HAVE_MMAP 965#if HAVE_MMAP
609
610 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 966 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
611 /* mmap supposedly does allocate-on-write for us */ 967 /* mmap supposedly does allocate-on-write for us */
612 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 968 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
613 969
614 if (cctx->sptr == (void *)-1) 970 if (cctx->sptr != (void *)-1)
615 {
616 perror ("FATAL: unable to mmap stack for coroutine");
617 _exit (EXIT_FAILURE);
618 } 971 {
619
620# if STACKGUARD 972# if CORO_STACKGUARD
621 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 973 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
622# endif 974# endif
975 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
976 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
977 cctx->flags |= CC_MAPPED;
978 }
979 else
980#endif
981 {
982 cctx->ssize = coro_stacksize * (long)sizeof (long);
983 New (0, cctx->sptr, coro_stacksize, long);
623 984
624#else
625
626 cctx->ssize = STACKSIZE * (long)sizeof (long);
627 New (0, cctx->sptr, STACKSIZE, long);
628
629 if (!cctx->sptr) 985 if (!cctx->sptr)
630 { 986 {
631 perror ("FATAL: unable to malloc stack for coroutine"); 987 perror ("FATAL: unable to allocate stack for coroutine");
632 _exit (EXIT_FAILURE); 988 _exit (EXIT_FAILURE);
633 } 989 }
634 990
635#endif 991 stack_start = cctx->sptr;
992 stack_size = cctx->ssize;
993 }
636 994
637#if USE_VALGRIND 995 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
638 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 996 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
639 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
640 cctx->ssize + (char *)cctx->sptr
641 );
642#endif
643
644 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
645 997
646 return cctx; 998 return cctx;
647} 999}
648 1000
649static void 1001static void
… …
652 if (!cctx) 1004 if (!cctx)
653 return; 1005 return;
654 1006
655 --cctx_count; 1007 --cctx_count;
656 1008
657#if USE_VALGRIND 1009#if CORO_USE_VALGRIND
658 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1010 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
659#endif 1011#endif
660 1012
661#if HAVE_MMAP 1013#if HAVE_MMAP
1014 if (cctx->flags & CC_MAPPED)
662 munmap (cctx->sptr, cctx->ssize); 1015 munmap (cctx->sptr, cctx->ssize);
663#else 1016 else
1017#endif
664 Safefree (cctx->sptr); 1018 Safefree (cctx->sptr);
665#endif
666 1019
667 Safefree (cctx); 1020 Safefree (cctx);
668} 1021}
669 1022
1023/* wether this cctx should be destructed */
1024#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1025
670static coro_cctx * 1026static coro_cctx *
671cctx_get () 1027cctx_get (pTHX)
672{ 1028{
673 coro_cctx *cctx; 1029 while (expect_true (cctx_first))
674
675 if (cctx_first)
676 { 1030 {
677 cctx = cctx_first; 1031 coro_cctx *cctx = cctx_first;
678 cctx_first = cctx->next; 1032 cctx_first = cctx->next;
679 --cctx_idle; 1033 --cctx_idle;
680 } 1034
681 else 1035 if (expect_true (!CCTX_EXPIRED (cctx)))
682 { 1036 return cctx;
683 cctx = cctx_new (); 1037
684 PL_op = PL_op->op_next; 1038 cctx_destroy (cctx);
685 } 1039 }
686 1040
687 return cctx; 1041 return cctx_new ();
688} 1042}
689 1043
690static void 1044static void
691cctx_put (coro_cctx *cctx) 1045cctx_put (coro_cctx *cctx)
692{ 1046{
693 /* free another cctx if overlimit */ 1047 /* free another cctx if overlimit */
694 if (cctx_idle >= MAX_IDLE_CCTX) 1048 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
695 { 1049 {
696 coro_cctx *first = cctx_first; 1050 coro_cctx *first = cctx_first;
697 cctx_first = first->next; 1051 cctx_first = first->next;
698 --cctx_idle; 1052 --cctx_idle;
699 1053
700 assert (!first->inuse);
701 cctx_destroy (first); 1054 cctx_destroy (first);
702 } 1055 }
703 1056
704 ++cctx_idle; 1057 ++cctx_idle;
705 cctx->next = cctx_first; 1058 cctx->next = cctx_first;
706 cctx_first = cctx; 1059 cctx_first = cctx;
707} 1060}
708 1061
709/* never call directly, always through the coro_state_transfer global variable */ 1062/** coroutine switching *****************************************************/
1063
1064static void
1065transfer_check (pTHX_ struct coro *prev, struct coro *next)
1066{
1067 if (expect_true (prev != next))
1068 {
1069 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1070 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1071
1072 if (expect_false (next->flags & CF_RUNNING))
1073 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1074
1075 if (expect_false (next->flags & CF_DESTROYED))
1076 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1077
1078 if (
1079#if PERL_VERSION_ATLEAST (5,9,0)
1080 expect_false (PL_parser)
1081#else
1082 expect_false (PL_lex_state != LEX_NOTPARSING)
1083#endif
1084 )
1085 croak ("Coro::State::transfer called while parsing, but this is not supported");
1086 }
1087}
1088
1089/* always use the TRANSFER macro */
710static void NOINLINE 1090static void NOINLINE
711transfer (struct coro *prev, struct coro *next) 1091transfer (pTHX_ struct coro *prev, struct coro *next)
712{ 1092{
713 dSTACKLEVEL; 1093 dSTACKLEVEL;
714 1094
715 /* sometimes transfer is only called to set idle_sp */ 1095 /* sometimes transfer is only called to set idle_sp */
716 if (!next) 1096 if (expect_false (!next))
717 { 1097 {
718 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1098 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
719 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1099 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
720 } 1100 }
721 else if (prev != next) 1101 else if (expect_true (prev != next))
722 { 1102 {
723 coro_cctx *prev__cctx; 1103 coro_cctx *prev__cctx;
724 1104
725 if (prev->flags & CF_NEW) 1105 if (expect_false (prev->flags & CF_NEW))
726 { 1106 {
727 /* create a new empty context */ 1107 /* create a new empty context */
728 Newz (0, prev->cctx, 1, coro_cctx); 1108 Newz (0, prev->cctx, 1, coro_cctx);
729 prev->cctx->inuse = 1;
730 prev->flags &= ~CF_NEW; 1109 prev->flags &= ~CF_NEW;
731 prev->flags |= CF_RUNNING; 1110 prev->flags |= CF_RUNNING;
732 } 1111 }
733 1112
734 /*TODO: must not croak here */
735 if (!prev->flags & CF_RUNNING)
736 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
737
738 if (next->flags & CF_RUNNING)
739 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
740
741 if (next->flags & CF_DESTROYED)
742 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
743
744 prev->flags &= ~CF_RUNNING; 1113 prev->flags &= ~CF_RUNNING;
745 next->flags |= CF_RUNNING; 1114 next->flags |= CF_RUNNING;
746 1115
747 LOCK; 1116 LOCK;
748 1117
749 if (next->flags & CF_NEW) 1118 if (expect_false (next->flags & CF_NEW))
750 { 1119 {
751 /* need to start coroutine */ 1120 /* need to start coroutine */
752 next->flags &= ~CF_NEW; 1121 next->flags &= ~CF_NEW;
753 /* first get rid of the old state */ 1122 /* first get rid of the old state */
754 save_perl (prev); 1123 save_perl (aTHX_ prev);
755 /* setup coroutine call */ 1124 /* setup coroutine call */
756 setup_coro (next); 1125 coro_setup (aTHX_ next);
757 /* need a new stack */
758 assert (!next->cctx);
759 } 1126 }
760 else 1127 else
761 { 1128 {
762 /* coroutine already started */ 1129 /* coroutine already started */
763 save_perl (prev); 1130 save_perl (aTHX_ prev);
764 load_perl (next); 1131 load_perl (aTHX_ next);
765 } 1132 }
766 1133
767 prev__cctx = prev->cctx; 1134 prev__cctx = prev->cctx;
768 1135
769 /* possibly "free" the cctx */ 1136 /* possibly "free" the cctx */
770 if (prev__cctx->idle_sp == STACKLEVEL) 1137 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
771 { 1138 {
772 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1139 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
773 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1140 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
774 1141
775 prev->cctx = 0; 1142 prev->cctx = 0;
776 1143
1144 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1145 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1146 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1147 if (!next->cctx)
1148 next->cctx = cctx_get (aTHX);
1149
777 cctx_put (prev__cctx); 1150 cctx_put (prev__cctx);
778 prev__cctx->inuse = 0;
779 } 1151 }
780 1152
1153 ++next->usecount;
1154
781 if (!next->cctx) 1155 if (expect_true (!next->cctx))
782 {
783 next->cctx = cctx_get (); 1156 next->cctx = cctx_get (aTHX);
784 assert (!next->cctx->inuse);
785 next->cctx->inuse = 1;
786 }
787 1157
788 if (prev__cctx != next->cctx) 1158 if (expect_false (prev__cctx != next->cctx))
789 { 1159 {
790 prev__cctx->top_env = PL_top_env; 1160 prev__cctx->top_env = PL_top_env;
791 PL_top_env = next->cctx->top_env; 1161 PL_top_env = next->cctx->top_env;
792 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1162 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
793 } 1163 }
794 1164
795 free_coro_mortal (); 1165 free_coro_mortal (aTHX);
796 UNLOCK; 1166 UNLOCK;
1167
1168 if (expect_false (prev->throw || next->throw))
1169 {
1170 struct coro *coro = SvSTATE (coro_current);
1171
1172 if (coro->throw)
1173 {
1174 SV *exception = coro->throw;
1175 coro->throw = 0;
1176 sv_setsv (ERRSV, exception);
1177 croak (0);
1178 }
1179 }
797 } 1180 }
798} 1181}
799 1182
800struct transfer_args 1183struct transfer_args
801{ 1184{
802 struct coro *prev, *next; 1185 struct coro *prev, *next;
803}; 1186};
804 1187
805#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1188#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
1189#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1190
1191/** high level stuff ********************************************************/
806 1192
807static int 1193static int
808coro_state_destroy (struct coro *coro) 1194coro_state_destroy (pTHX_ struct coro *coro)
809{ 1195{
810 if (coro->flags & CF_DESTROYED) 1196 if (coro->flags & CF_DESTROYED)
811 return 0; 1197 return 0;
812 1198
813 coro->flags |= CF_DESTROYED; 1199 coro->flags |= CF_DESTROYED;
1200
1201 if (coro->flags & CF_READY)
1202 {
1203 /* reduce nready, as destroying a ready coro effectively unreadies it */
1204 /* alternative: look through all ready queues and remove the coro */
1205 LOCK;
1206 --coro_nready;
1207 UNLOCK;
1208 }
1209 else
1210 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
814 1211
815 if (coro->mainstack && coro->mainstack != main_mainstack) 1212 if (coro->mainstack && coro->mainstack != main_mainstack)
816 { 1213 {
817 assert (!(coro->flags & CF_RUNNING));
818
819 struct coro temp; 1214 struct coro temp;
820 Zero (&temp, 1, struct coro);
821 temp.save = CORO_SAVE_ALL;
822 1215
823 if (coro->flags & CF_RUNNING) 1216 if (coro->flags & CF_RUNNING)
824 croak ("FATAL: tried to destroy currently running coroutine"); 1217 croak ("FATAL: tried to destroy currently running coroutine");
825 1218
826 save_perl (&temp); 1219 save_perl (aTHX_ &temp);
827 load_perl (coro); 1220 load_perl (aTHX_ coro);
828 1221
829 coro_destroy_stacks (); 1222 coro_destroy (aTHX_ coro);
830 1223
831 load_perl (&temp); /* this will get rid of defsv etc.. */ 1224 load_perl (aTHX_ &temp);
832 1225
833 coro->mainstack = 0; 1226 coro->slot = 0;
834 } 1227 }
835 1228
836 cctx_destroy (coro->cctx); 1229 cctx_destroy (coro->cctx);
837 SvREFCNT_dec (coro->args); 1230 SvREFCNT_dec (coro->args);
838 1231
1232 if (coro->next) coro->next->prev = coro->prev;
1233 if (coro->prev) coro->prev->next = coro->next;
1234 if (coro == coro_first) coro_first = coro->next;
1235
839 return 1; 1236 return 1;
840} 1237}
841 1238
842static int 1239static int
843coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1240coro_state_free (pTHX_ SV *sv, MAGIC *mg)
844{ 1241{
845 struct coro *coro = (struct coro *)mg->mg_ptr; 1242 struct coro *coro = (struct coro *)mg->mg_ptr;
846 mg->mg_ptr = 0; 1243 mg->mg_ptr = 0;
847 1244
1245 coro->hv = 0;
1246
848 if (--coro->refcnt < 0) 1247 if (--coro->refcnt < 0)
849 { 1248 {
850 coro_state_destroy (coro); 1249 coro_state_destroy (aTHX_ coro);
851 Safefree (coro); 1250 Safefree (coro);
852 } 1251 }
853 1252
854 return 0; 1253 return 0;
855} 1254}
… …
873#else 1272#else
874# define MGf_DUP 0 1273# define MGf_DUP 0
875#endif 1274#endif
876}; 1275};
877 1276
878static struct coro *
879SvSTATE (SV *coro)
880{
881 HV *stash;
882 MAGIC *mg;
883
884 if (SvROK (coro))
885 coro = SvRV (coro);
886
887 stash = SvSTASH (coro);
888 if (stash != coro_stash && stash != coro_state_stash)
889 {
890 /* very slow, but rare, check */
891 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
892 croak ("Coro::State object required");
893 }
894
895 mg = SvMAGIC (coro);
896 assert (mg->mg_type == PERL_MAGIC_ext);
897 return (struct coro *)mg->mg_ptr;
898}
899
900static void 1277static void
901prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1278prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
902{ 1279{
903 ta->prev = SvSTATE (prev_sv); 1280 ta->prev = SvSTATE (prev_sv);
904 ta->next = SvSTATE (next_sv); 1281 ta->next = SvSTATE (next_sv);
1282 TRANSFER_CHECK (*ta);
905} 1283}
906 1284
907static void 1285static void
908api_transfer (SV *prev_sv, SV *next_sv) 1286api_transfer (SV *prev_sv, SV *next_sv)
909{ 1287{
1288 dTHX;
910 struct transfer_args ta; 1289 struct transfer_args ta;
911 1290
912 prepare_transfer (&ta, prev_sv, next_sv); 1291 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
913 TRANSFER (ta); 1292 TRANSFER (ta);
914} 1293}
915 1294
916static int
917api_save (SV *coro_sv, int new_save)
918{
919 struct coro *coro = SvSTATE (coro_sv);
920 int old_save = coro->save;
921
922 if (new_save >= 0)
923 coro->save = new_save;
924
925 return old_save;
926}
927
928/** Coro ********************************************************************/ 1295/** Coro ********************************************************************/
929 1296
930#define PRIO_MAX 3
931#define PRIO_HIGH 1
932#define PRIO_NORMAL 0
933#define PRIO_LOW -1
934#define PRIO_IDLE -3
935#define PRIO_MIN -4
936
937/* for Coro.pm */
938static SV *coro_current;
939static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
940static int coro_nready;
941
942static void 1297static void
943coro_enq (SV *coro_sv) 1298coro_enq (pTHX_ SV *coro_sv)
944{ 1299{
945 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1300 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
946 coro_nready++;
947} 1301}
948 1302
949static SV * 1303static SV *
950coro_deq (int min_prio) 1304coro_deq (pTHX_ int min_prio)
951{ 1305{
952 int prio = PRIO_MAX - PRIO_MIN; 1306 int prio = PRIO_MAX - PRIO_MIN;
953 1307
954 min_prio -= PRIO_MIN; 1308 min_prio -= PRIO_MIN;
955 if (min_prio < 0) 1309 if (min_prio < 0)
956 min_prio = 0; 1310 min_prio = 0;
957 1311
958 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1312 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
959 if (AvFILLp (coro_ready [prio]) >= 0) 1313 if (AvFILLp (coro_ready [prio]) >= 0)
960 {
961 coro_nready--;
962 return av_shift (coro_ready [prio]); 1314 return av_shift (coro_ready [prio]);
963 }
964 1315
965 return 0; 1316 return 0;
966} 1317}
967 1318
968static int 1319static int
969api_ready (SV *coro_sv) 1320api_ready (SV *coro_sv)
970{ 1321{
1322 dTHX;
971 struct coro *coro; 1323 struct coro *coro;
972 1324
973 if (SvROK (coro_sv)) 1325 if (SvROK (coro_sv))
974 coro_sv = SvRV (coro_sv); 1326 coro_sv = SvRV (coro_sv);
975 1327
… …
979 return 0; 1331 return 0;
980 1332
981 coro->flags |= CF_READY; 1333 coro->flags |= CF_READY;
982 1334
983 LOCK; 1335 LOCK;
984 coro_enq (SvREFCNT_inc (coro_sv)); 1336 coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1337 ++coro_nready;
985 UNLOCK; 1338 UNLOCK;
986 1339
987 return 1; 1340 return 1;
988} 1341}
989 1342
990static int 1343static int
991api_is_ready (SV *coro_sv) 1344api_is_ready (SV *coro_sv)
992{ 1345{
1346 dTHX;
993 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1347 return !!(SvSTATE (coro_sv)->flags & CF_READY);
994} 1348}
995 1349
996static void 1350static void
997prepare_schedule (struct transfer_args *ta) 1351prepare_schedule (pTHX_ struct transfer_args *ta)
998{ 1352{
999 SV *prev_sv, *next_sv; 1353 SV *prev_sv, *next_sv;
1000 1354
1001 for (;;) 1355 for (;;)
1002 { 1356 {
1003 LOCK; 1357 LOCK;
1004 next_sv = coro_deq (PRIO_MIN); 1358 next_sv = coro_deq (aTHX_ PRIO_MIN);
1005 UNLOCK;
1006 1359
1007 /* nothing to schedule: call the idle handler */ 1360 /* nothing to schedule: call the idle handler */
1008 if (!next_sv) 1361 if (expect_false (!next_sv))
1009 { 1362 {
1010 dSP; 1363 dSP;
1364 UNLOCK;
1011 1365
1012 ENTER; 1366 ENTER;
1013 SAVETMPS; 1367 SAVETMPS;
1014 1368
1015 PUSHMARK (SP); 1369 PUSHMARK (SP);
… …
1022 } 1376 }
1023 1377
1024 ta->next = SvSTATE (next_sv); 1378 ta->next = SvSTATE (next_sv);
1025 1379
1026 /* cannot transfer to destroyed coros, skip and look for next */ 1380 /* cannot transfer to destroyed coros, skip and look for next */
1027 if (ta->next->flags & CF_DESTROYED) 1381 if (expect_false (ta->next->flags & CF_DESTROYED))
1028 { 1382 {
1383 UNLOCK;
1029 SvREFCNT_dec (next_sv); 1384 SvREFCNT_dec (next_sv);
1385 /* coro_nready is already taken care of by destroy */
1030 continue; 1386 continue;
1031 } 1387 }
1032 1388
1389 --coro_nready;
1390 UNLOCK;
1033 break; 1391 break;
1034 } 1392 }
1035 1393
1036 /* free this only after the transfer */ 1394 /* free this only after the transfer */
1037 prev_sv = SvRV (coro_current); 1395 prev_sv = SvRV (coro_current);
1038 SvRV_set (coro_current, next_sv);
1039 ta->prev = SvSTATE (prev_sv); 1396 ta->prev = SvSTATE (prev_sv);
1040 1397 TRANSFER_CHECK (*ta);
1041 assert (ta->next->flags & CF_READY); 1398 assert (ta->next->flags & CF_READY);
1042 ta->next->flags &= ~CF_READY; 1399 ta->next->flags &= ~CF_READY;
1400 SvRV_set (coro_current, next_sv);
1043 1401
1044 LOCK; 1402 LOCK;
1045 free_coro_mortal (); 1403 free_coro_mortal (aTHX);
1046 coro_mortal = prev_sv; 1404 coro_mortal = prev_sv;
1047 UNLOCK; 1405 UNLOCK;
1048} 1406}
1049 1407
1050static void 1408static void
1051prepare_cede (struct transfer_args *ta) 1409prepare_cede (pTHX_ struct transfer_args *ta)
1052{ 1410{
1053 api_ready (coro_current); 1411 api_ready (coro_current);
1054 prepare_schedule (ta); 1412 prepare_schedule (aTHX_ ta);
1055} 1413}
1056 1414
1057static int 1415static int
1058prepare_cede_notself (struct transfer_args *ta) 1416prepare_cede_notself (pTHX_ struct transfer_args *ta)
1059{ 1417{
1060 if (coro_nready) 1418 if (coro_nready)
1061 { 1419 {
1062 SV *prev = SvRV (coro_current); 1420 SV *prev = SvRV (coro_current);
1063 prepare_schedule (ta); 1421 prepare_schedule (aTHX_ ta);
1064 api_ready (prev); 1422 api_ready (prev);
1065 return 1; 1423 return 1;
1066 } 1424 }
1067 else 1425 else
1068 return 0; 1426 return 0;
1069} 1427}
1070 1428
1071static void 1429static void
1072api_schedule (void) 1430api_schedule (void)
1073{ 1431{
1432 dTHX;
1074 struct transfer_args ta; 1433 struct transfer_args ta;
1075 1434
1076 prepare_schedule (&ta); 1435 prepare_schedule (aTHX_ &ta);
1077 TRANSFER (ta); 1436 TRANSFER (ta);
1078} 1437}
1079 1438
1080static int 1439static int
1081api_cede (void) 1440api_cede (void)
1082{ 1441{
1442 dTHX;
1083 struct transfer_args ta; 1443 struct transfer_args ta;
1084 1444
1085 prepare_cede (&ta); 1445 prepare_cede (aTHX_ &ta);
1086 1446
1087 if (ta.prev != ta.next) 1447 if (expect_true (ta.prev != ta.next))
1088 { 1448 {
1089 TRANSFER (ta); 1449 TRANSFER (ta);
1090 return 1; 1450 return 1;
1091 } 1451 }
1092 else 1452 else
… …
1094} 1454}
1095 1455
1096static int 1456static int
1097api_cede_notself (void) 1457api_cede_notself (void)
1098{ 1458{
1459 dTHX;
1099 struct transfer_args ta; 1460 struct transfer_args ta;
1100 1461
1101 if (prepare_cede_notself (&ta)) 1462 if (prepare_cede_notself (aTHX_ &ta))
1102 { 1463 {
1103 TRANSFER (ta); 1464 TRANSFER (ta);
1104 return 1; 1465 return 1;
1105 } 1466 }
1106 else 1467 else
1107 return 0; 1468 return 0;
1108} 1469}
1109 1470
1471static void
1472api_trace (SV *coro_sv, int flags)
1473{
1474 dTHX;
1475 struct coro *coro = SvSTATE (coro_sv);
1476
1477 if (flags & CC_TRACE)
1478 {
1479 if (!coro->cctx)
1480 coro->cctx = cctx_new ();
1481 else if (!(coro->cctx->flags & CC_TRACE))
1482 croak ("cannot enable tracing on coroutine with custom stack");
1483
1484 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1485 }
1486 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1487 {
1488 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1489
1490 if (coro->flags & CF_RUNNING)
1491 PL_runops = RUNOPS_DEFAULT;
1492 else
1493 coro->slot->runops = RUNOPS_DEFAULT;
1494 }
1495}
1496
1110MODULE = Coro::State PACKAGE = Coro::State 1497MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1111 1498
1112PROTOTYPES: DISABLE 1499PROTOTYPES: DISABLE
1113 1500
1114BOOT: 1501BOOT:
1115{ 1502{
1116#ifdef USE_ITHREADS 1503#ifdef USE_ITHREADS
1117 MUTEX_INIT (&coro_mutex); 1504 MUTEX_INIT (&coro_mutex);
1118#endif 1505#endif
1119 BOOT_PAGESIZE; 1506 BOOT_PAGESIZE;
1120 1507
1508 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1509 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1510
1511 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1512 sv_diehook = coro_get_sv (aTHX_ "Coro::State::DIEHOOK" , TRUE);
1513 sv_warnhook = coro_get_sv (aTHX_ "Coro::State::WARNHOOK", TRUE);
1514
1515 if (!PL_diehook ) hv_store (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, SvREFCNT_inc (sv_diehook ), 0);
1516 if (!PL_warnhook) hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, SvREFCNT_inc (sv_warnhook), 0);
1517
1121 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1518 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1122 1519
1520 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1521 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1123 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1522 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1124 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1125 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1126 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1127 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1523 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1128 1524
1129 main_mainstack = PL_mainstack; 1525 main_mainstack = PL_mainstack;
1526 main_top_env = PL_top_env;
1527
1528 while (main_top_env->je_prev)
1529 main_top_env = main_top_env->je_prev;
1130 1530
1131 coroapi.ver = CORO_API_VERSION; 1531 coroapi.ver = CORO_API_VERSION;
1532 coroapi.rev = CORO_API_REVISION;
1132 coroapi.transfer = api_transfer; 1533 coroapi.transfer = api_transfer;
1133 1534
1134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1535 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1135} 1536}
1136 1537
… …
1141 struct coro *coro; 1542 struct coro *coro;
1142 HV *hv; 1543 HV *hv;
1143 int i; 1544 int i;
1144 1545
1145 Newz (0, coro, 1, struct coro); 1546 Newz (0, coro, 1, struct coro);
1146 coro->args = newAV (); 1547 coro->args = newAV ();
1147 coro->save = CORO_SAVE_ALL;
1148 coro->flags = CF_NEW; 1548 coro->flags = CF_NEW;
1149 1549
1550 if (coro_first) coro_first->prev = coro;
1551 coro->next = coro_first;
1552 coro_first = coro;
1553
1150 hv = newHV (); 1554 coro->hv = hv = newHV ();
1151 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1555 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1152 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1556 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1153 1557
1558 av_extend (coro->args, items - 1);
1154 for (i = 1; i < items; i++) 1559 for (i = 1; i < items; i++)
1155 av_push (coro->args, newSVsv (ST (i))); 1560 av_push (coro->args, newSVsv (ST (i)));
1156} 1561}
1157 OUTPUT: 1562 OUTPUT:
1158 RETVAL 1563 RETVAL
1159 1564
1160int 1565# these not obviously related functions are all rolled into the same xs
1161save (SV *coro, int new_save = -1) 1566# function to increase chances that they all will call transfer with the same
1162 CODE: 1567# stack offset
1163 RETVAL = api_save (coro, new_save);
1164 OUTPUT:
1165 RETVAL
1166
1167void 1568void
1168_set_stacklevel (...) 1569_set_stacklevel (...)
1169 ALIAS: 1570 ALIAS:
1170 Coro::State::transfer = 1 1571 Coro::State::transfer = 1
1171 Coro::schedule = 2 1572 Coro::schedule = 2
… …
1184 1585
1185 case 1: 1586 case 1:
1186 if (items != 2) 1587 if (items != 2)
1187 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1588 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1188 1589
1189 prepare_transfer (&ta, ST (0), ST (1)); 1590 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1190 break; 1591 break;
1191 1592
1192 case 2: 1593 case 2:
1193 prepare_schedule (&ta); 1594 prepare_schedule (aTHX_ &ta);
1194 break; 1595 break;
1195 1596
1196 case 3: 1597 case 3:
1197 prepare_cede (&ta); 1598 prepare_cede (aTHX_ &ta);
1198 break; 1599 break;
1199 1600
1200 case 4: 1601 case 4:
1201 if (!prepare_cede_notself (&ta)) 1602 if (!prepare_cede_notself (aTHX_ &ta))
1202 XSRETURN_EMPTY; 1603 XSRETURN_EMPTY;
1203 1604
1204 break; 1605 break;
1205 } 1606 }
1206 1607
1207 BARRIER; 1608 BARRIER;
1609 PUTBACK;
1208 TRANSFER (ta); 1610 TRANSFER (ta);
1209 1611 SPAGAIN; /* might be the sp of a different coroutine now */
1210 if (GIMME_V != G_VOID && ta.next != ta.prev) 1612 /* be extra careful not to ever do anything after TRANSFER */
1211 XSRETURN_YES;
1212} 1613}
1213 1614
1214bool 1615bool
1215_destroy (SV *coro_sv) 1616_destroy (SV *coro_sv)
1216 CODE: 1617 CODE:
1217 RETVAL = coro_state_destroy (SvSTATE (coro_sv)); 1618 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1218 OUTPUT: 1619 OUTPUT:
1219 RETVAL 1620 RETVAL
1220 1621
1221void 1622void
1222_exit (code) 1623_exit (code)
… …
1224 PROTOTYPE: $ 1625 PROTOTYPE: $
1225 CODE: 1626 CODE:
1226 _exit (code); 1627 _exit (code);
1227 1628
1228int 1629int
1630cctx_stacksize (int new_stacksize = 0)
1631 CODE:
1632 RETVAL = coro_stacksize;
1633 if (new_stacksize)
1634 coro_stacksize = new_stacksize;
1635 OUTPUT:
1636 RETVAL
1637
1638int
1229cctx_count () 1639cctx_count ()
1230 CODE: 1640 CODE:
1231 RETVAL = cctx_count; 1641 RETVAL = cctx_count;
1232 OUTPUT: 1642 OUTPUT:
1233 RETVAL 1643 RETVAL
… …
1237 CODE: 1647 CODE:
1238 RETVAL = cctx_idle; 1648 RETVAL = cctx_idle;
1239 OUTPUT: 1649 OUTPUT:
1240 RETVAL 1650 RETVAL
1241 1651
1652void
1653list ()
1654 PPCODE:
1655{
1656 struct coro *coro;
1657 for (coro = coro_first; coro; coro = coro->next)
1658 if (coro->hv)
1659 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1660}
1661
1662void
1663call (Coro::State coro, SV *coderef)
1664 ALIAS:
1665 eval = 1
1666 CODE:
1667{
1668 if (coro->mainstack)
1669 {
1670 struct coro temp;
1671
1672 if (!(coro->flags & CF_RUNNING))
1673 {
1674 save_perl (aTHX_ &temp);
1675 load_perl (aTHX_ coro);
1676 }
1677
1678 {
1679 dSP;
1680 ENTER;
1681 SAVETMPS;
1682 PUTBACK;
1683 PUSHSTACK;
1684 PUSHMARK (SP);
1685
1686 if (ix)
1687 eval_sv (coderef, 0);
1688 else
1689 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1690
1691 POPSTACK;
1692 SPAGAIN;
1693 FREETMPS;
1694 LEAVE;
1695 PUTBACK;
1696 }
1697
1698 if (!(coro->flags & CF_RUNNING))
1699 {
1700 save_perl (aTHX_ coro);
1701 load_perl (aTHX_ &temp);
1702 }
1703 }
1704}
1705
1706SV *
1707is_ready (Coro::State coro)
1708 PROTOTYPE: $
1709 ALIAS:
1710 is_ready = CF_READY
1711 is_running = CF_RUNNING
1712 is_new = CF_NEW
1713 is_destroyed = CF_DESTROYED
1714 CODE:
1715 RETVAL = boolSV (coro->flags & ix);
1716 OUTPUT:
1717 RETVAL
1718
1719void
1720api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1721
1722SV *
1723has_stack (Coro::State coro)
1724 PROTOTYPE: $
1725 CODE:
1726 RETVAL = boolSV (!!coro->cctx);
1727 OUTPUT:
1728 RETVAL
1729
1730int
1731is_traced (Coro::State coro)
1732 PROTOTYPE: $
1733 CODE:
1734 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1735 OUTPUT:
1736 RETVAL
1737
1738IV
1739rss (Coro::State coro)
1740 PROTOTYPE: $
1741 ALIAS:
1742 usecount = 1
1743 CODE:
1744 switch (ix)
1745 {
1746 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1747 case 1: RETVAL = coro->usecount; break;
1748 }
1749 OUTPUT:
1750 RETVAL
1751
1752
1242MODULE = Coro::State PACKAGE = Coro 1753MODULE = Coro::State PACKAGE = Coro
1243 1754
1244BOOT: 1755BOOT:
1245{ 1756{
1246 int i; 1757 int i;
1247 1758
1759 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1760 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1761 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1762
1763 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1764 SvREADONLY_on (coro_current);
1765
1248 coro_stash = gv_stashpv ("Coro", TRUE); 1766 coro_stash = gv_stashpv ("Coro", TRUE);
1249 1767
1250 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1768 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1251 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1769 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1252 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1770 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1253 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1771 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1254 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1772 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1255 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1773 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1256 1774
1257 coro_current = get_sv ("Coro::current", FALSE);
1258 SvREADONLY_on (coro_current);
1259
1260 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1775 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1261 coro_ready[i] = newAV (); 1776 coro_ready[i] = newAV ();
1262 1777
1263 { 1778 {
1264 SV *sv = perl_get_sv("Coro::API", 1); 1779 SV *sv = perl_get_sv ("Coro::API", TRUE);
1780 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1265 1781
1266 coroapi.schedule = api_schedule; 1782 coroapi.schedule = api_schedule;
1267 coroapi.save = api_save;
1268 coroapi.cede = api_cede; 1783 coroapi.cede = api_cede;
1269 coroapi.cede_notself = api_cede_notself; 1784 coroapi.cede_notself = api_cede_notself;
1270 coroapi.ready = api_ready; 1785 coroapi.ready = api_ready;
1271 coroapi.is_ready = api_is_ready; 1786 coroapi.is_ready = api_is_ready;
1272 coroapi.nready = &coro_nready; 1787 coroapi.nready = &coro_nready;
… …
1313 CODE: 1828 CODE:
1314 RETVAL = boolSV (api_ready (self)); 1829 RETVAL = boolSV (api_ready (self));
1315 OUTPUT: 1830 OUTPUT:
1316 RETVAL 1831 RETVAL
1317 1832
1318SV *
1319is_ready (SV *self)
1320 PROTOTYPE: $
1321 CODE:
1322 RETVAL = boolSV (api_is_ready (self));
1323 OUTPUT:
1324 RETVAL
1325
1326int 1833int
1327nready (...) 1834nready (...)
1328 PROTOTYPE: 1835 PROTOTYPE:
1329 CODE: 1836 CODE:
1330 RETVAL = coro_nready; 1837 RETVAL = coro_nready;
1331 OUTPUT: 1838 OUTPUT:
1332 RETVAL 1839 RETVAL
1333 1840
1841void
1842throw (Coro::State self, SV *throw = &PL_sv_undef)
1843 PROTOTYPE: $;$
1844 CODE:
1845 SvREFCNT_dec (self->throw);
1846 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1847
1848# for async_pool speedup
1849void
1850_pool_1 (SV *cb)
1851 CODE:
1852{
1853 struct coro *coro = SvSTATE (coro_current);
1854 HV *hv = (HV *)SvRV (coro_current);
1855 AV *defav = GvAV (PL_defgv);
1856 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1857 AV *invoke_av;
1858 int i, len;
1859
1860 if (!invoke)
1861 croak ("\3async_pool terminate\2\n");
1862
1863 SvREFCNT_dec (coro->saved_deffh);
1864 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1865
1866 hv_store (hv, "desc", sizeof ("desc") - 1,
1867 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1868
1869 invoke_av = (AV *)SvRV (invoke);
1870 len = av_len (invoke_av);
1871
1872 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1873
1874 if (len > 0)
1875 {
1876 av_fill (defav, len - 1);
1877 for (i = 0; i < len; ++i)
1878 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
1879 }
1880
1881 SvREFCNT_dec (invoke);
1882}
1883
1884void
1885_pool_2 (SV *cb)
1886 CODE:
1887{
1888 struct coro *coro = SvSTATE (coro_current);
1889
1890 sv_setsv (cb, &PL_sv_undef);
1891
1892 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1893 coro->saved_deffh = 0;
1894
1895 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1896 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1897 croak ("\3async_pool terminate\2\n");
1898
1899 av_clear (GvAV (PL_defgv));
1900 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1901 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1902
1903 coro->prio = 0;
1904
1905 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1906 api_trace (coro_current, 0);
1907
1908 av_push (av_async_pool, newSVsv (coro_current));
1909}
1910
1911
1334MODULE = Coro::State PACKAGE = Coro::AIO 1912MODULE = Coro::State PACKAGE = Coro::AIO
1335 1913
1336SV * 1914SV *
1337_get_state () 1915_get_state ()
1338 CODE: 1916 CODE:

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