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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 1.251 by root, Thu Oct 30 09:44:31 2008 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"
9#include "perliol.h"
6 10
7#include "patchlevel.h" 11#include "patchlevel.h"
8 12
9#include <stdio.h> 13#include <stdio.h>
10#include <errno.h> 14#include <errno.h>
11#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
12 25
13#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
14# include <unistd.h> 27# include <unistd.h>
15# include <sys/mman.h> 28# include <sys/mman.h>
16# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
31#else 44#else
32# define PAGESIZE 0 45# define PAGESIZE 0
33# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
34#endif 47#endif
35 48
36#if USE_VALGRIND 49#if CORO_USE_VALGRIND
37# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
38#endif 54#endif
39 55
40/* the maximum number of idle cctx that will be pooled */ 56/* the maximum number of idle cctx that will be pooled */
41#define MAX_IDLE_CCTX 8 57#define MAX_IDLE_CCTX 8
42 58
… …
65# ifndef IS_PADCONST 81# ifndef IS_PADCONST
66# define IS_PADCONST(v) 0 82# define IS_PADCONST(v) 0
67# endif 83# endif
68#endif 84#endif
69 85
86/* 5.11 */
87#ifndef CxHASARGS
88# define CxHASARGS(cx) (cx)->blk_sub.hasargs
89#endif
90
91/* 5.10.0 */
92#ifndef SvREFCNT_inc_NN
93# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
94#endif
95
96/* 5.8.8 */
97#ifndef GV_NOTQUAL
98# define GV_NOTQUAL 0
99#endif
100#ifndef newSV
101# define newSV(l) NEWSV(0,l)
102#endif
103
70/* 5.8.7 */ 104/* 5.8.7 */
71#ifndef SvRV_set 105#ifndef SvRV_set
72# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
73#endif 107#endif
74 108
75#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76# undef STACKGUARD 110# undef CORO_STACKGUARD
77#endif 111#endif
78 112
79#ifndef STACKGUARD 113#ifndef CORO_STACKGUARD
80# define STACKGUARD 0 114# define CORO_STACKGUARD 0
81#endif 115#endif
82 116
83/* prefer perl internal functions over our own? */ 117/* prefer perl internal functions over our own? */
84#ifndef PREFER_PERL_FUNCTIONS 118#ifndef CORO_PREFER_PERL_FUNCTIONS
85# define PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
86#endif 120#endif
87 121
88/* The next macro should declare a variable stacklevel that contains and approximation 122/* 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 123 * portable way as possible. */
90 * and should be unique. */
91#define dSTACKLEVEL int stacklevel 124#define dSTACKLEVEL volatile char stacklevel
92#define STACKLEVEL ((void *)&stacklevel) 125#define STACKLEVEL ((void *)&stacklevel)
93 126
94#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
95 128
96#if __GNUC__ >= 3 129#if __GNUC__ >= 3
97# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
98# define BARRIER __asm__ __volatile__ ("" : : : "memory") 131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value))
99#else 133#else
100# define attribute(x) 134# define attribute(x)
101# define BARRIER 135# define BARRIER
136# define expect(expr,value) (expr)
102#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
103 141
104#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
105 143
106#include "CoroAPI.h" 144#include "CoroAPI.h"
107 145
… …
112#else 150#else
113# define LOCK (void)0 151# define LOCK (void)0
114# define UNLOCK (void)0 152# define UNLOCK (void)0
115#endif 153#endif
116 154
155/* helper storage struct for Coro::AIO */
117struct io_state 156struct io_state
118{ 157{
158 AV *res;
119 int errorno; 159 int errorno;
120 I32 laststype; 160 I32 laststype;
121 int laststatval; 161 int laststatval;
122 Stat_t statcache; 162 Stat_t statcache;
123}; 163};
124 164
165static double (*nvtime)(); /* so why doesn't it take void? */
166
167static size_t coro_stacksize = CORO_STACKSIZE;
125static struct CoroAPI coroapi; 168static struct CoroAPI coroapi;
126static AV *main_mainstack; /* used to differentiate between $main and others */ 169static AV *main_mainstack; /* used to differentiate between $main and others */
170static JMPENV *main_top_env;
127static HV *coro_state_stash, *coro_stash; 171static HV *coro_state_stash, *coro_stash;
128static SV *coro_mortal; /* will be freed after next transfer */ 172static volatile SV *coro_mortal; /* will be freed after next transfer */
173
174static GV *irsgv; /* $/ */
175static GV *stdoutgv; /* *STDOUT */
176static SV *rv_diehook;
177static SV *rv_warnhook;
178static HV *hv_sig; /* %SIG */
179
180/* async_pool helper stuff */
181static SV *sv_pool_rss;
182static SV *sv_pool_size;
183static AV *av_async_pool;
184
185/* Coro::AnyEvent */
186static SV *sv_activity;
129 187
130static struct coro_cctx *cctx_first; 188static struct coro_cctx *cctx_first;
131static int cctx_count, cctx_idle; 189static int cctx_count, cctx_idle;
190
191enum {
192 CC_MAPPED = 0x01,
193 CC_NOREUSE = 0x02, /* throw this away after tracing */
194 CC_TRACE = 0x04,
195 CC_TRACE_SUB = 0x08, /* trace sub calls */
196 CC_TRACE_LINE = 0x10, /* trace each statement */
197 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
198};
132 199
133/* this is a structure representing a c-level coroutine */ 200/* this is a structure representing a c-level coroutine */
134typedef struct coro_cctx { 201typedef struct coro_cctx {
135 struct coro_cctx *next; 202 struct coro_cctx *next;
136 203
137 /* the stack */ 204 /* the stack */
138 void *sptr; 205 void *sptr;
139 long ssize; /* positive == mmap, otherwise malloc */ 206 size_t ssize;
140 207
141 /* cpu state */ 208 /* cpu state */
142 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 209 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 */ 210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
144 JMPENV *top_env; 211 JMPENV *top_env;
145 coro_context cctx; 212 coro_context cctx;
146 213
147 int inuse;
148
149#if USE_VALGRIND 214#if CORO_USE_VALGRIND
150 int valgrind_id; 215 int valgrind_id;
151#endif 216#endif
217 unsigned char flags;
152} coro_cctx; 218} coro_cctx;
153 219
154enum { 220enum {
155 CF_RUNNING = 0x0001, /* coroutine is running */ 221 CF_RUNNING = 0x0001, /* coroutine is running */
156 CF_READY = 0x0002, /* coroutine is ready */ 222 CF_READY = 0x0002, /* coroutine is ready */
157 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
158 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
159}; 225};
160 226
227/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct {
229 SV *defsv;
230 AV *defav;
231 SV *errsv;
232 SV *irsgv;
233#define VAR(name,type) type name;
234# include "state.h"
235#undef VAR
236} perl_slots;
237
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
239
161/* this is a structure representing a perl-level coroutine */ 240/* this is a structure representing a perl-level coroutine */
162struct coro { 241struct coro {
163 /* the c coroutine allocated to this perl coroutine, if any */ 242 /* the c coroutine allocated to this perl coroutine, if any */
164 coro_cctx *cctx; 243 coro_cctx *cctx;
165 244
245 /* process data */
246 AV *mainstack;
247 perl_slots *slot; /* basically the saved sp */
248
166 /* data associated with this coroutine (initial args) */ 249 AV *args; /* data associated with this coroutine (initial args) */
167 AV *args; 250 int refcnt; /* coroutines are refcounted, yes */
168 int refcnt;
169 int save; /* CORO_SAVE flags */
170 int flags; /* CF_ flags */ 251 int flags; /* CF_ flags */
252 HV *hv; /* the perl hash associated with this coro, if any */
171 253
172 /* optionally saved, might be zero */ 254 /* statistics */
173 AV *defav; /* @_ */ 255 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
182 256
183 /* coro process data */ 257 /* coro process data */
184 int prio; 258 int prio;
259 SV *throw; /* exception to be thrown */
260
261 /* async_pool */
262 SV *saved_deffh;
263
264 /* linked list */
265 struct coro *next, *prev;
185}; 266};
186 267
187typedef struct coro *Coro__State; 268typedef struct coro *Coro__State;
188typedef struct coro *Coro__State_or_hashref; 269typedef struct coro *Coro__State_or_hashref;
189 270
271/** Coro ********************************************************************/
272
273#define PRIO_MAX 3
274#define PRIO_HIGH 1
275#define PRIO_NORMAL 0
276#define PRIO_LOW -1
277#define PRIO_IDLE -3
278#define PRIO_MIN -4
279
280/* for Coro.pm */
281static SV *coro_current;
282static SV *coro_readyhook;
283static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
284static int coro_nready;
285static struct coro *coro_first;
286
287/** lowlevel stuff **********************************************************/
288
289static SV *
290coro_get_sv (pTHX_ const char *name, int create)
291{
292#if PERL_VERSION_ATLEAST (5,10,0)
293 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
294 get_sv (name, create);
295#endif
296 return get_sv (name, create);
297}
298
190static AV * 299static AV *
300coro_get_av (pTHX_ const char *name, int create)
301{
302#if PERL_VERSION_ATLEAST (5,10,0)
303 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
304 get_av (name, create);
305#endif
306 return get_av (name, create);
307}
308
309static HV *
310coro_get_hv (pTHX_ const char *name, int create)
311{
312#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_hv (name, create);
315#endif
316 return get_hv (name, create);
317}
318
319static AV *
191coro_clone_padlist (CV *cv) 320coro_clone_padlist (pTHX_ CV *cv)
192{ 321{
193 AV *padlist = CvPADLIST (cv); 322 AV *padlist = CvPADLIST (cv);
194 AV *newpadlist, *newpad; 323 AV *newpadlist, *newpad;
195 324
196 newpadlist = newAV (); 325 newpadlist = newAV ();
197 AvREAL_off (newpadlist); 326 AvREAL_off (newpadlist);
198#if PERL_VERSION_ATLEAST (5,9,0) 327#if PERL_VERSION_ATLEAST (5,10,0)
199 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 328 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
200#else 329#else
201 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 330 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
202#endif 331#endif
203 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 332 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
204 --AvFILLp (padlist); 333 --AvFILLp (padlist);
205 334
206 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 335 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
207 av_store (newpadlist, 1, (SV *)newpad); 336 av_store (newpadlist, 1, (SV *)newpad);
208 337
209 return newpadlist; 338 return newpadlist;
210} 339}
211 340
212static void 341static void
213free_padlist (AV *padlist) 342free_padlist (pTHX_ AV *padlist)
214{ 343{
215 /* may be during global destruction */ 344 /* may be during global destruction */
216 if (SvREFCNT (padlist)) 345 if (SvREFCNT (padlist))
217 { 346 {
218 I32 i = AvFILLp (padlist); 347 I32 i = AvFILLp (padlist);
… …
239 AV *padlist; 368 AV *padlist;
240 AV *av = (AV *)mg->mg_obj; 369 AV *av = (AV *)mg->mg_obj;
241 370
242 /* casting is fun. */ 371 /* casting is fun. */
243 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 372 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
244 free_padlist (padlist); 373 free_padlist (aTHX_ padlist);
245 374
246 SvREFCNT_dec (av); 375 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
247 376
248 return 0; 377 return 0;
249} 378}
250 379
251#define PERL_MAGIC_coro PERL_MAGIC_ext 380#define CORO_MAGIC_type_cv PERL_MAGIC_ext
381#define CORO_MAGIC_type_state PERL_MAGIC_ext
252 382
253static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 383static MGVTBL coro_cv_vtbl = {
384 0, 0, 0, 0,
385 coro_cv_free
386};
254 387
255#define CORO_MAGIC(cv) \ 388#define CORO_MAGIC(sv,type) \
256 SvMAGIC (cv) \ 389 SvMAGIC (sv) \
257 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 390 ? SvMAGIC (sv)->mg_type == type \
258 ? SvMAGIC (cv) \ 391 ? SvMAGIC (sv) \
259 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 392 : mg_find (sv, type) \
260 : 0 393 : 0
394
395#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
396#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
397
398static struct coro *
399SvSTATE_ (pTHX_ SV *coro)
400{
401 HV *stash;
402 MAGIC *mg;
403
404 if (SvROK (coro))
405 coro = SvRV (coro);
406
407 if (expect_false (SvTYPE (coro) != SVt_PVHV))
408 croak ("Coro::State object required");
409
410 stash = SvSTASH (coro);
411 if (expect_false (stash != coro_stash && stash != coro_state_stash))
412 {
413 /* very slow, but rare, check */
414 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
415 croak ("Coro::State object required");
416 }
417
418 mg = CORO_MAGIC_state (coro);
419 return (struct coro *)mg->mg_ptr;
420}
421
422#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
261 423
262/* the next two functions merely cache the padlists */ 424/* the next two functions merely cache the padlists */
263static void 425static void
264get_padlist (CV *cv) 426get_padlist (pTHX_ CV *cv)
265{ 427{
266 MAGIC *mg = CORO_MAGIC (cv); 428 MAGIC *mg = CORO_MAGIC_cv (cv);
267 AV *av; 429 AV *av;
268 430
269 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 431 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
270 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 432 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
271 else 433 else
272 { 434 {
273#if PREFER_PERL_FUNCTIONS 435#if CORO_PREFER_PERL_FUNCTIONS
274 /* this is probably cleaner, but also slower? */ 436 /* this is probably cleaner? but also slower! */
437 /* in practise, it seems to be less stable */
275 CV *cp = Perl_cv_clone (cv); 438 CV *cp = Perl_cv_clone (cv);
276 CvPADLIST (cv) = CvPADLIST (cp); 439 CvPADLIST (cv) = CvPADLIST (cp);
277 CvPADLIST (cp) = 0; 440 CvPADLIST (cp) = 0;
278 SvREFCNT_dec (cp); 441 SvREFCNT_dec (cp);
279#else 442#else
280 CvPADLIST (cv) = coro_clone_padlist (cv); 443 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
281#endif 444#endif
282 } 445 }
283} 446}
284 447
285static void 448static void
286put_padlist (CV *cv) 449put_padlist (pTHX_ CV *cv)
287{ 450{
288 MAGIC *mg = CORO_MAGIC (cv); 451 MAGIC *mg = CORO_MAGIC_cv (cv);
289 AV *av; 452 AV *av;
290 453
291 if (!mg) 454 if (expect_false (!mg))
292 { 455 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
293 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
294 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
295 mg->mg_virtual = &vtbl_coro;
296 mg->mg_obj = (SV *)newAV ();
297 }
298 456
299 av = (AV *)mg->mg_obj; 457 av = (AV *)mg->mg_obj;
300 458
301 if (AvFILLp (av) >= AvMAX (av)) 459 if (expect_false (AvFILLp (av) >= AvMAX (av)))
302 av_extend (av, AvMAX (av) + 1); 460 av_extend (av, AvMAX (av) + 1);
303 461
304 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 462 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
305} 463}
306 464
307#define SB do { 465/** load & save, init *******************************************************/
308#define SE } while (0)
309
310#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
311 466
312static void 467static void
313load_perl (Coro__State c) 468load_perl (pTHX_ Coro__State c)
314{ 469{
470 perl_slots *slot = c->slot;
471 c->slot = 0;
472
473 PL_mainstack = c->mainstack;
474
475 GvSV (PL_defgv) = slot->defsv;
476 GvAV (PL_defgv) = slot->defav;
477 GvSV (PL_errgv) = slot->errsv;
478 GvSV (irsgv) = slot->irsgv;
479
315#define VAR(name,type) PL_ ## name = c->name; 480 #define VAR(name,type) PL_ ## name = slot->name;
316# include "state.h" 481 # include "state.h"
317#undef VAR 482 #undef VAR
318
319 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
320 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
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 }
333 483
334 { 484 {
335 dSP; 485 dSP;
486
336 CV *cv; 487 CV *cv;
337 488
338 /* now do the ugly restore mess */ 489 /* now do the ugly restore mess */
339 while ((cv = (CV *)POPs)) 490 while (expect_true (cv = (CV *)POPs))
340 { 491 {
341 put_padlist (cv); /* mark this padlist as available */ 492 put_padlist (aTHX_ cv); /* mark this padlist as available */
342 CvDEPTH (cv) = PTR2IV (POPs); 493 CvDEPTH (cv) = PTR2IV (POPs);
343 CvPADLIST (cv) = (AV *)POPs; 494 CvPADLIST (cv) = (AV *)POPs;
344 } 495 }
345 496
346 PUTBACK; 497 PUTBACK;
347 } 498 }
348} 499}
349 500
350static void 501static void
351save_perl (Coro__State c) 502save_perl (pTHX_ Coro__State c)
352{ 503{
353 { 504 {
354 dSP; 505 dSP;
355 I32 cxix = cxstack_ix; 506 I32 cxix = cxstack_ix;
356 PERL_CONTEXT *ccstk = cxstack; 507 PERL_CONTEXT *ccstk = cxstack;
… …
359 /* 510 /*
360 * the worst thing you can imagine happens first - we have to save 511 * the worst thing you can imagine happens first - we have to save
361 * (and reinitialize) all cv's in the whole callchain :( 512 * (and reinitialize) all cv's in the whole callchain :(
362 */ 513 */
363 514
364 EXTEND (SP, 3 + 1);
365 PUSHs (Nullsv); 515 XPUSHs (Nullsv);
366 /* this loop was inspired by pp_caller */ 516 /* this loop was inspired by pp_caller */
367 for (;;) 517 for (;;)
368 { 518 {
369 while (cxix >= 0) 519 while (expect_true (cxix >= 0))
370 { 520 {
371 PERL_CONTEXT *cx = &ccstk[cxix--]; 521 PERL_CONTEXT *cx = &ccstk[cxix--];
372 522
373 if (CxTYPE (cx) == CXt_SUB) 523 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
374 { 524 {
375 CV *cv = cx->blk_sub.cv; 525 CV *cv = cx->blk_sub.cv;
376 526
377 if (CvDEPTH (cv)) 527 if (expect_true (CvDEPTH (cv)))
378 { 528 {
379 EXTEND (SP, 3); 529 EXTEND (SP, 3);
380 PUSHs ((SV *)CvPADLIST (cv)); 530 PUSHs ((SV *)CvPADLIST (cv));
381 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 531 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
382 PUSHs ((SV *)cv); 532 PUSHs ((SV *)cv);
383 533
384 CvDEPTH (cv) = 0; 534 CvDEPTH (cv) = 0;
385 get_padlist (cv); 535 get_padlist (aTHX_ cv);
386 } 536 }
387 } 537 }
388 } 538 }
389 539
390 if (top_si->si_type == PERLSI_MAIN) 540 if (expect_true (top_si->si_type == PERLSI_MAIN))
391 break; 541 break;
392 542
393 top_si = top_si->si_prev; 543 top_si = top_si->si_prev;
394 ccstk = top_si->si_cxstack; 544 ccstk = top_si->si_cxstack;
395 cxix = top_si->si_cxix; 545 cxix = top_si->si_cxix;
396 } 546 }
397 547
398 PUTBACK; 548 PUTBACK;
399 } 549 }
400 550
401 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 551 /* allocate some space on the context stack for our purposes */
402 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 552 /* we manually unroll here, as usually 2 slots is enough */
403 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 553 if (SLOT_COUNT >= 1) CXINC;
404 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 554 if (SLOT_COUNT >= 2) CXINC;
555 if (SLOT_COUNT >= 3) CXINC;
556 {
557 int i;
558 for (i = 3; i < SLOT_COUNT; ++i)
559 CXINC;
560 }
561 cxstack_ix -= SLOT_COUNT; /* undo allocation */
405 562
563 c->mainstack = PL_mainstack;
564
565 {
566 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
567
568 slot->defav = GvAV (PL_defgv);
569 slot->defsv = DEFSV;
570 slot->errsv = ERRSV;
571 slot->irsgv = GvSV (irsgv);
572
406#define VAR(name,type)c->name = PL_ ## name; 573 #define VAR(name,type) slot->name = PL_ ## name;
407# include "state.h" 574 # include "state.h"
408#undef VAR 575 #undef VAR
576 }
409} 577}
410 578
411/* 579/*
412 * allocate various perl stacks. This is an exact copy 580 * allocate various perl stacks. This is an exact copy
413 * of perl.c:init_stacks, except that it uses less memory 581 * of perl.c:init_stacks, except that it uses less memory
414 * on the (sometimes correct) assumption that coroutines do 582 * on the (sometimes correct) assumption that coroutines do
415 * not usually need a lot of stackspace. 583 * not usually need a lot of stackspace.
416 */ 584 */
417#if PREFER_PERL_FUNCTIONS 585#if CORO_PREFER_PERL_FUNCTIONS
418# define coro_init_stacks init_stacks 586# define coro_init_stacks init_stacks
419#else 587#else
420static void 588static void
421coro_init_stacks () 589coro_init_stacks (pTHX)
422{ 590{
423 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 591 PL_curstackinfo = new_stackinfo(32, 8);
424 PL_curstackinfo->si_type = PERLSI_MAIN; 592 PL_curstackinfo->si_type = PERLSI_MAIN;
425 PL_curstack = PL_curstackinfo->si_stack; 593 PL_curstack = PL_curstackinfo->si_stack;
426 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 594 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
427 595
428 PL_stack_base = AvARRAY(PL_curstack); 596 PL_stack_base = AvARRAY(PL_curstack);
429 PL_stack_sp = PL_stack_base; 597 PL_stack_sp = PL_stack_base;
430 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 598 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
431 599
432 New(50,PL_tmps_stack,128,SV*); 600 New(50,PL_tmps_stack,32,SV*);
433 PL_tmps_floor = -1; 601 PL_tmps_floor = -1;
434 PL_tmps_ix = -1; 602 PL_tmps_ix = -1;
435 PL_tmps_max = 128; 603 PL_tmps_max = 32;
436 604
437 New(54,PL_markstack,32,I32); 605 New(54,PL_markstack,16,I32);
438 PL_markstack_ptr = PL_markstack; 606 PL_markstack_ptr = PL_markstack;
439 PL_markstack_max = PL_markstack + 32; 607 PL_markstack_max = PL_markstack + 16;
440 608
441#ifdef SET_MARK_OFFSET 609#ifdef SET_MARK_OFFSET
442 SET_MARK_OFFSET; 610 SET_MARK_OFFSET;
443#endif 611#endif
444 612
445 New(54,PL_scopestack,32,I32); 613 New(54,PL_scopestack,8,I32);
446 PL_scopestack_ix = 0; 614 PL_scopestack_ix = 0;
447 PL_scopestack_max = 32; 615 PL_scopestack_max = 8;
448 616
449 New(54,PL_savestack,64,ANY); 617 New(54,PL_savestack,24,ANY);
450 PL_savestack_ix = 0; 618 PL_savestack_ix = 0;
451 PL_savestack_max = 64; 619 PL_savestack_max = 24;
452 620
453#if !PERL_VERSION_ATLEAST (5,9,0) 621#if !PERL_VERSION_ATLEAST (5,10,0)
454 New(54,PL_retstack,16,OP*); 622 New(54,PL_retstack,4,OP*);
455 PL_retstack_ix = 0; 623 PL_retstack_ix = 0;
456 PL_retstack_max = 16; 624 PL_retstack_max = 4;
457#endif 625#endif
458} 626}
459#endif 627#endif
460 628
461/* 629/*
462 * destroy the stacks, the callchain etc... 630 * destroy the stacks, the callchain etc...
463 */ 631 */
464static void 632static void
465coro_destroy_stacks () 633coro_destroy_stacks (pTHX)
466{ 634{
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) 635 while (PL_curstackinfo->si_next)
485 PL_curstackinfo = PL_curstackinfo->si_next; 636 PL_curstackinfo = PL_curstackinfo->si_next;
486 637
487 while (PL_curstackinfo) 638 while (PL_curstackinfo)
488 { 639 {
… …
498 649
499 Safefree (PL_tmps_stack); 650 Safefree (PL_tmps_stack);
500 Safefree (PL_markstack); 651 Safefree (PL_markstack);
501 Safefree (PL_scopestack); 652 Safefree (PL_scopestack);
502 Safefree (PL_savestack); 653 Safefree (PL_savestack);
503#if !PERL_VERSION_ATLEAST (5,9,0) 654#if !PERL_VERSION_ATLEAST (5,10,0)
504 Safefree (PL_retstack); 655 Safefree (PL_retstack);
505#endif 656#endif
506} 657}
507 658
659static size_t
660coro_rss (pTHX_ struct coro *coro)
661{
662 size_t rss = sizeof (*coro);
663
664 if (coro->mainstack)
665 {
666 perl_slots tmp_slot;
667 perl_slots *slot;
668
669 if (coro->flags & CF_RUNNING)
670 {
671 slot = &tmp_slot;
672
673 #define VAR(name,type) slot->name = PL_ ## name;
674 # include "state.h"
675 #undef VAR
676 }
677 else
678 slot = coro->slot;
679
680 if (slot)
681 {
682 rss += sizeof (slot->curstackinfo);
683 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
684 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
685 rss += slot->tmps_max * sizeof (SV *);
686 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
687 rss += slot->scopestack_max * sizeof (I32);
688 rss += slot->savestack_max * sizeof (ANY);
689
690#if !PERL_VERSION_ATLEAST (5,10,0)
691 rss += slot->retstack_max * sizeof (OP *);
692#endif
693 }
694 }
695
696 return rss;
697}
698
699/** coroutine stack handling ************************************************/
700
701static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
702static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
703static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
704
705/* apparently < 5.8.8 */
706#ifndef MgPV_nolen_const
707#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
708 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
709 (const char*)(mg)->mg_ptr)
710#endif
711
712/*
713 * This overrides the default magic get method of %SIG elements.
714 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
715 * and instead of tryign to save and restore the hash elements, we just provide
716 * readback here.
717 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
718 * not expecting this to actually change the hook. This is a potential problem
719 * when a schedule happens then, but we ignore this.
720 */
721static int
722coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
723{
724 const char *s = MgPV_nolen_const (mg);
725
726 if (*s == '_')
727 {
728 SV **svp = 0;
729
730 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
731 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
732
733 if (svp)
734 {
735 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
736 return 0;
737 }
738 }
739
740 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
741}
742
743static int
744coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
745{
746 const char *s = MgPV_nolen_const (mg);
747
748 if (*s == '_')
749 {
750 SV **svp = 0;
751
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754
755 if (svp)
756 {
757 SV *old = *svp;
758 *svp = 0;
759 SvREFCNT_dec (old);
760 return 0;
761 }
762 }
763
764 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
765}
766
767static int
768coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
769{
770 const char *s = MgPV_nolen_const (mg);
771
772 if (*s == '_')
773 {
774 SV **svp = 0;
775
776 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
777 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
778
779 if (svp)
780 {
781 SV *old = *svp;
782 *svp = newSVsv (sv);
783 SvREFCNT_dec (old);
784 return 0;
785 }
786 }
787
788 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
789}
790
508static void 791static void
509setup_coro (struct coro *coro) 792coro_setup (pTHX_ struct coro *coro)
510{ 793{
511 /* 794 /*
512 * emulate part of the perl startup here. 795 * emulate part of the perl startup here.
513 */ 796 */
514
515 coro_init_stacks (); 797 coro_init_stacks (aTHX);
516 798
799 PL_runops = RUNOPS_DEFAULT;
517 PL_curcop = &PL_compiling; 800 PL_curcop = &PL_compiling;
518 PL_in_eval = EVAL_NULL; 801 PL_in_eval = EVAL_NULL;
802 PL_comppad = 0;
519 PL_curpm = 0; 803 PL_curpm = 0;
804 PL_curpad = 0;
520 PL_localizing = 0; 805 PL_localizing = 0;
521 PL_dirty = 0; 806 PL_dirty = 0;
522 PL_restartop = 0; 807 PL_restartop = 0;
808#if PERL_VERSION_ATLEAST (5,10,0)
809 PL_parser = 0;
810#endif
811
812 /* recreate the die/warn hooks */
813 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
814 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
815
816 GvSV (PL_defgv) = newSV (0);
817 GvAV (PL_defgv) = coro->args; coro->args = 0;
818 GvSV (PL_errgv) = newSV (0);
819 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
820 PL_rs = newSVsv (GvSV (irsgv));
821 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
523 822
524 { 823 {
525 dSP; 824 dSP;
526 LOGOP myop; 825 LOGOP myop;
527 826
528 SvREFCNT_dec (GvAV (PL_defgv));
529 GvAV (PL_defgv) = coro->args; coro->args = 0;
530
531 Zero (&myop, 1, LOGOP); 827 Zero (&myop, 1, LOGOP);
532 myop.op_next = Nullop; 828 myop.op_next = Nullop;
533 myop.op_flags = OPf_WANT_VOID; 829 myop.op_flags = OPf_WANT_VOID;
534 830
535 PUSHMARK (SP); 831 PUSHMARK (SP);
536 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 832 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
537 PUTBACK; 833 PUTBACK;
538 PL_op = (OP *)&myop; 834 PL_op = (OP *)&myop;
539 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
540 SPAGAIN; 836 SPAGAIN;
541 } 837 }
542 838
543 ENTER; /* necessary e.g. for dounwind */ 839 /* this newly created coroutine might be run on an existing cctx which most
840 * likely was suspended in set_stacklevel, called from entersub.
841 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
842 * so we ENTER here for symmetry
843 */
844 ENTER;
544} 845}
545 846
546static void 847static void
848coro_destroy (pTHX_ struct coro *coro)
849{
850 if (!IN_DESTRUCT)
851 {
852 /* restore all saved variables and stuff */
853 LEAVE_SCOPE (0);
854 assert (PL_tmps_floor == -1);
855
856 /* free all temporaries */
857 FREETMPS;
858 assert (PL_tmps_ix == -1);
859
860 /* unwind all extra stacks */
861 POPSTACK_TO (PL_mainstack);
862
863 /* unwind main stack */
864 dounwind (-1);
865 }
866
867 SvREFCNT_dec (GvSV (PL_defgv));
868 SvREFCNT_dec (GvAV (PL_defgv));
869 SvREFCNT_dec (GvSV (PL_errgv));
870 SvREFCNT_dec (PL_defoutgv);
871 SvREFCNT_dec (PL_rs);
872 SvREFCNT_dec (GvSV (irsgv));
873
874 SvREFCNT_dec (PL_diehook);
875 SvREFCNT_dec (PL_warnhook);
876
877 SvREFCNT_dec (coro->saved_deffh);
878 SvREFCNT_dec (coro->throw);
879
880 coro_destroy_stacks (aTHX);
881}
882
883static void
547free_coro_mortal () 884free_coro_mortal (pTHX)
548{ 885{
549 if (coro_mortal) 886 if (expect_true (coro_mortal))
550 { 887 {
551 SvREFCNT_dec (coro_mortal); 888 SvREFCNT_dec (coro_mortal);
552 coro_mortal = 0; 889 coro_mortal = 0;
553 } 890 }
554} 891}
555 892
893static int
894runops_trace (pTHX)
895{
896 COP *oldcop = 0;
897 int oldcxix = -2;
898 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
899 coro_cctx *cctx = coro->cctx;
900
901 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
902 {
903 PERL_ASYNC_CHECK ();
904
905 if (cctx->flags & CC_TRACE_ALL)
906 {
907 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
908 {
909 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
910 SV **bot, **top;
911 AV *av = newAV (); /* return values */
912 SV **cb;
913 dSP;
914
915 GV *gv = CvGV (cx->blk_sub.cv);
916 SV *fullname = sv_2mortal (newSV (0));
917 if (isGV (gv))
918 gv_efullname3 (fullname, gv, 0);
919
920 bot = PL_stack_base + cx->blk_oldsp + 1;
921 top = cx->blk_gimme == G_ARRAY ? SP + 1
922 : cx->blk_gimme == G_SCALAR ? bot + 1
923 : bot;
924
925 av_extend (av, top - bot);
926 while (bot < top)
927 av_push (av, SvREFCNT_inc_NN (*bot++));
928
929 PL_runops = RUNOPS_DEFAULT;
930 ENTER;
931 SAVETMPS;
932 EXTEND (SP, 3);
933 PUSHMARK (SP);
934 PUSHs (&PL_sv_no);
935 PUSHs (fullname);
936 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
937 PUTBACK;
938 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
939 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
940 SPAGAIN;
941 FREETMPS;
942 LEAVE;
943 PL_runops = runops_trace;
944 }
945
946 if (oldcop != PL_curcop)
947 {
948 oldcop = PL_curcop;
949
950 if (PL_curcop != &PL_compiling)
951 {
952 SV **cb;
953
954 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
955 {
956 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
957
958 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
959 {
960 runops_proc_t old_runops = PL_runops;
961 dSP;
962 GV *gv = CvGV (cx->blk_sub.cv);
963 SV *fullname = sv_2mortal (newSV (0));
964
965 if (isGV (gv))
966 gv_efullname3 (fullname, gv, 0);
967
968 PL_runops = RUNOPS_DEFAULT;
969 ENTER;
970 SAVETMPS;
971 EXTEND (SP, 3);
972 PUSHMARK (SP);
973 PUSHs (&PL_sv_yes);
974 PUSHs (fullname);
975 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
976 PUTBACK;
977 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
978 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
979 SPAGAIN;
980 FREETMPS;
981 LEAVE;
982 PL_runops = runops_trace;
983 }
984
985 oldcxix = cxstack_ix;
986 }
987
988 if (cctx->flags & CC_TRACE_LINE)
989 {
990 dSP;
991
992 PL_runops = RUNOPS_DEFAULT;
993 ENTER;
994 SAVETMPS;
995 EXTEND (SP, 3);
996 PL_runops = RUNOPS_DEFAULT;
997 PUSHMARK (SP);
998 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
999 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1000 PUTBACK;
1001 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1002 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1003 SPAGAIN;
1004 FREETMPS;
1005 LEAVE;
1006 PL_runops = runops_trace;
1007 }
1008 }
1009 }
1010 }
1011 }
1012
1013 TAINT_NOT;
1014 return 0;
1015}
1016
556/* inject a fake call to Coro::State::_cctx_init into the execution */ 1017/* inject a fake call to Coro::State::_cctx_init into the execution */
1018/* _cctx_init should be careful, as it could be called at almost any time */
1019/* during execution of a perl program */
557static void NOINLINE 1020static void NOINLINE
558prepare_cctx (coro_cctx *cctx) 1021cctx_prepare (pTHX_ coro_cctx *cctx)
559{ 1022{
560 dSP; 1023 dSP;
561 LOGOP myop; 1024 LOGOP myop;
1025
1026 PL_top_env = &PL_start_env;
1027
1028 if (cctx->flags & CC_TRACE)
1029 PL_runops = runops_trace;
562 1030
563 Zero (&myop, 1, LOGOP); 1031 Zero (&myop, 1, LOGOP);
564 myop.op_next = PL_op; 1032 myop.op_next = PL_op;
565 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1033 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
566 1034
… …
572 PL_op = (OP *)&myop; 1040 PL_op = (OP *)&myop;
573 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1041 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
574 SPAGAIN; 1042 SPAGAIN;
575} 1043}
576 1044
1045/*
1046 * this is a _very_ stripped down perl interpreter ;)
1047 */
577static void 1048static void
578coro_run (void *arg) 1049cctx_run (void *arg)
579{ 1050{
1051 dTHX;
1052
580 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1053 /* cctx_run is the alternative tail of transfer(), so unlock here. */
581 UNLOCK; 1054 UNLOCK;
582 1055
583 /* 1056 /* we now skip the entersub that lead to transfer() */
584 * this is a _very_ stripped down perl interpreter ;) 1057 PL_op = PL_op->op_next;
585 */
586 PL_top_env = &PL_start_env;
587 1058
588 /* inject call to cctx_init */ 1059 /* inject a fake subroutine call to cctx_init */
589 prepare_cctx ((coro_cctx *)arg); 1060 cctx_prepare (aTHX_ (coro_cctx *)arg);
590 1061
591 /* somebody will hit me for both perl_run and PL_restartop */ 1062 /* somebody or something will hit me for both perl_run and PL_restartop */
592 PL_restartop = PL_op; 1063 PL_restartop = PL_op;
593 perl_run (PL_curinterp); 1064 perl_run (PL_curinterp);
594 1065
595 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1066 /*
596 abort (); 1067 * If perl-run returns we assume exit() was being called or the coro
1068 * fell off the end, which seems to be the only valid (non-bug)
1069 * reason for perl_run to return. We try to exit by jumping to the
1070 * bootstrap-time "top" top_env, as we cannot restore the "main"
1071 * coroutine as Coro has no such concept
1072 */
1073 PL_top_env = main_top_env;
1074 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
597} 1075}
598 1076
599static coro_cctx * 1077static coro_cctx *
600cctx_new () 1078cctx_new ()
601{ 1079{
602 coro_cctx *cctx; 1080 coro_cctx *cctx;
1081 void *stack_start;
1082 size_t stack_size;
603 1083
604 ++cctx_count; 1084 ++cctx_count;
605 1085
606 Newz (0, cctx, 1, coro_cctx); 1086 Newz (0, cctx, 1, coro_cctx);
607 1087
608#if HAVE_MMAP 1088#if HAVE_MMAP
609
610 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1089 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
611 /* mmap supposedly does allocate-on-write for us */ 1090 /* 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); 1091 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
613 1092
614 if (cctx->sptr == (void *)-1) 1093 if (cctx->sptr != (void *)-1)
615 {
616 perror ("FATAL: unable to mmap stack for coroutine");
617 _exit (EXIT_FAILURE);
618 } 1094 {
619
620# if STACKGUARD 1095# if CORO_STACKGUARD
621 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1096 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
622# endif 1097# endif
1098 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
1099 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1100 cctx->flags |= CC_MAPPED;
1101 }
1102 else
1103#endif
1104 {
1105 cctx->ssize = coro_stacksize * (long)sizeof (long);
1106 New (0, cctx->sptr, coro_stacksize, long);
623 1107
624#else
625
626 cctx->ssize = STACKSIZE * (long)sizeof (long);
627 New (0, cctx->sptr, STACKSIZE, long);
628
629 if (!cctx->sptr) 1108 if (!cctx->sptr)
630 { 1109 {
631 perror ("FATAL: unable to malloc stack for coroutine"); 1110 perror ("FATAL: unable to allocate stack for coroutine");
632 _exit (EXIT_FAILURE); 1111 _exit (EXIT_FAILURE);
633 } 1112 }
634 1113
635#endif 1114 stack_start = cctx->sptr;
1115 stack_size = cctx->ssize;
1116 }
636 1117
637#if USE_VALGRIND 1118 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
638 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1119 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 1120
646 return cctx; 1121 return cctx;
647} 1122}
648 1123
649static void 1124static void
… …
652 if (!cctx) 1127 if (!cctx)
653 return; 1128 return;
654 1129
655 --cctx_count; 1130 --cctx_count;
656 1131
657#if USE_VALGRIND 1132#if CORO_USE_VALGRIND
658 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1133 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
659#endif 1134#endif
660 1135
661#if HAVE_MMAP 1136#if HAVE_MMAP
1137 if (cctx->flags & CC_MAPPED)
662 munmap (cctx->sptr, cctx->ssize); 1138 munmap (cctx->sptr, cctx->ssize);
663#else 1139 else
1140#endif
664 Safefree (cctx->sptr); 1141 Safefree (cctx->sptr);
665#endif
666 1142
667 Safefree (cctx); 1143 Safefree (cctx);
668} 1144}
669 1145
1146/* wether this cctx should be destructed */
1147#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1148
670static coro_cctx * 1149static coro_cctx *
671cctx_get () 1150cctx_get (pTHX)
672{ 1151{
673 coro_cctx *cctx; 1152 while (expect_true (cctx_first))
674
675 if (cctx_first)
676 { 1153 {
677 cctx = cctx_first; 1154 coro_cctx *cctx = cctx_first;
678 cctx_first = cctx->next; 1155 cctx_first = cctx->next;
679 --cctx_idle; 1156 --cctx_idle;
680 } 1157
681 else 1158 if (expect_true (!CCTX_EXPIRED (cctx)))
682 { 1159 return cctx;
683 cctx = cctx_new (); 1160
684 PL_op = PL_op->op_next; 1161 cctx_destroy (cctx);
685 } 1162 }
686 1163
687 return cctx; 1164 return cctx_new ();
688} 1165}
689 1166
690static void 1167static void
691cctx_put (coro_cctx *cctx) 1168cctx_put (coro_cctx *cctx)
692{ 1169{
693 /* free another cctx if overlimit */ 1170 /* free another cctx if overlimit */
694 if (cctx_idle >= MAX_IDLE_CCTX) 1171 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
695 { 1172 {
696 coro_cctx *first = cctx_first; 1173 coro_cctx *first = cctx_first;
697 cctx_first = first->next; 1174 cctx_first = first->next;
698 --cctx_idle; 1175 --cctx_idle;
699 1176
700 assert (!first->inuse);
701 cctx_destroy (first); 1177 cctx_destroy (first);
702 } 1178 }
703 1179
704 ++cctx_idle; 1180 ++cctx_idle;
705 cctx->next = cctx_first; 1181 cctx->next = cctx_first;
706 cctx_first = cctx; 1182 cctx_first = cctx;
707} 1183}
708 1184
709/* never call directly, always through the coro_state_transfer global variable */ 1185/** coroutine switching *****************************************************/
1186
1187static void
1188transfer_check (pTHX_ struct coro *prev, struct coro *next)
1189{
1190 if (expect_true (prev != next))
1191 {
1192 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1193 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1194
1195 if (expect_false (next->flags & CF_RUNNING))
1196 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1197
1198 if (expect_false (next->flags & CF_DESTROYED))
1199 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1200
1201#if !PERL_VERSION_ATLEAST (5,10,0)
1202 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1203 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1204#endif
1205 }
1206}
1207
1208/* always use the TRANSFER macro */
710static void NOINLINE 1209static void NOINLINE
711transfer (struct coro *prev, struct coro *next) 1210transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
712{ 1211{
713 dSTACKLEVEL; 1212 dSTACKLEVEL;
1213 static volatile int has_throw;
714 1214
715 /* sometimes transfer is only called to set idle_sp */ 1215 /* sometimes transfer is only called to set idle_sp */
716 if (!next) 1216 if (expect_false (!next))
717 { 1217 {
718 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1218 ((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 */ 1219 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
720 } 1220 }
721 else if (prev != next) 1221 else if (expect_true (prev != next))
722 { 1222 {
723 coro_cctx *prev__cctx; 1223 coro_cctx *prev__cctx;
724 1224
725 if (prev->flags & CF_NEW) 1225 if (expect_false (prev->flags & CF_NEW))
726 { 1226 {
727 /* create a new empty context */ 1227 /* create a new empty context */
728 Newz (0, prev->cctx, 1, coro_cctx); 1228 Newz (0, prev->cctx, 1, coro_cctx);
729 prev->cctx->inuse = 1;
730 prev->flags &= ~CF_NEW; 1229 prev->flags &= ~CF_NEW;
731 prev->flags |= CF_RUNNING; 1230 prev->flags |= CF_RUNNING;
732 } 1231 }
733 1232
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; 1233 prev->flags &= ~CF_RUNNING;
745 next->flags |= CF_RUNNING; 1234 next->flags |= CF_RUNNING;
746 1235
747 LOCK; 1236 LOCK;
748 1237
1238 /* first get rid of the old state */
1239 save_perl (aTHX_ prev);
1240
749 if (next->flags & CF_NEW) 1241 if (expect_false (next->flags & CF_NEW))
750 { 1242 {
751 /* need to start coroutine */ 1243 /* need to start coroutine */
752 next->flags &= ~CF_NEW; 1244 next->flags &= ~CF_NEW;
753 /* first get rid of the old state */
754 save_perl (prev);
755 /* setup coroutine call */ 1245 /* setup coroutine call */
756 setup_coro (next); 1246 coro_setup (aTHX_ next);
757 /* need a new stack */
758 assert (!next->cctx);
759 } 1247 }
760 else 1248 else
761 {
762 /* coroutine already started */
763 save_perl (prev);
764 load_perl (next); 1249 load_perl (aTHX_ next);
765 }
766 1250
767 prev__cctx = prev->cctx; 1251 prev__cctx = prev->cctx;
768 1252
769 /* possibly "free" the cctx */ 1253 /* possibly "free" the cctx */
1254 if (expect_true (
770 if (prev__cctx->idle_sp == STACKLEVEL) 1255 prev__cctx->idle_sp == STACKLEVEL
1256 && !(prev__cctx->flags & CC_TRACE)
1257 && !force_cctx
1258 ))
771 { 1259 {
772 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1260 /* 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)); 1261 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
774 1262
775 prev->cctx = 0; 1263 prev->cctx = 0;
776 1264
1265 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1266 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1267 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1268 if (!next->cctx)
1269 next->cctx = cctx_get (aTHX);
1270
777 cctx_put (prev__cctx); 1271 cctx_put (prev__cctx);
778 prev__cctx->inuse = 0;
779 } 1272 }
780 1273
1274 ++next->usecount;
1275
781 if (!next->cctx) 1276 if (expect_true (!next->cctx))
782 {
783 next->cctx = cctx_get (); 1277 next->cctx = cctx_get (aTHX);
784 assert (!next->cctx->inuse);
785 next->cctx->inuse = 1;
786 }
787 1278
1279 has_throw = !!next->throw;
1280
788 if (prev__cctx != next->cctx) 1281 if (expect_false (prev__cctx != next->cctx))
789 { 1282 {
790 prev__cctx->top_env = PL_top_env; 1283 prev__cctx->top_env = PL_top_env;
791 PL_top_env = next->cctx->top_env; 1284 PL_top_env = next->cctx->top_env;
792 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1285 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
793 } 1286 }
794 1287
795 free_coro_mortal (); 1288 free_coro_mortal (aTHX);
796 UNLOCK; 1289 UNLOCK;
1290
1291 if (expect_false (has_throw))
1292 {
1293 struct coro *coro = SvSTATE (coro_current);
1294
1295 if (coro->throw)
1296 {
1297 SV *exception = coro->throw;
1298 coro->throw = 0;
1299 sv_setsv (ERRSV, exception);
1300 croak (0);
1301 }
1302 }
797 } 1303 }
798} 1304}
799 1305
800struct transfer_args 1306struct transfer_args
801{ 1307{
802 struct coro *prev, *next; 1308 struct coro *prev, *next;
803}; 1309};
804 1310
1311#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
805#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1312#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1313
1314/** high level stuff ********************************************************/
806 1315
807static int 1316static int
808coro_state_destroy (struct coro *coro) 1317coro_state_destroy (pTHX_ struct coro *coro)
809{ 1318{
810 if (coro->flags & CF_DESTROYED) 1319 if (coro->flags & CF_DESTROYED)
811 return 0; 1320 return 0;
812 1321
813 coro->flags |= CF_DESTROYED; 1322 coro->flags |= CF_DESTROYED;
1323
1324 if (coro->flags & CF_READY)
1325 {
1326 /* reduce nready, as destroying a ready coro effectively unreadies it */
1327 /* alternative: look through all ready queues and remove the coro */
1328 LOCK;
1329 --coro_nready;
1330 UNLOCK;
1331 }
1332 else
1333 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
814 1334
815 if (coro->mainstack && coro->mainstack != main_mainstack) 1335 if (coro->mainstack && coro->mainstack != main_mainstack)
816 { 1336 {
817 assert (!(coro->flags & CF_RUNNING));
818
819 struct coro temp; 1337 struct coro temp;
820 Zero (&temp, 1, struct coro);
821 temp.save = CORO_SAVE_ALL;
822 1338
823 if (coro->flags & CF_RUNNING) 1339 if (coro->flags & CF_RUNNING)
824 croak ("FATAL: tried to destroy currently running coroutine"); 1340 croak ("FATAL: tried to destroy currently running coroutine");
825 1341
826 save_perl (&temp); 1342 save_perl (aTHX_ &temp);
827 load_perl (coro); 1343 load_perl (aTHX_ coro);
828 1344
829 coro_destroy_stacks (); 1345 coro_destroy (aTHX_ coro);
830 1346
831 load_perl (&temp); /* this will get rid of defsv etc.. */ 1347 load_perl (aTHX_ &temp);
832 1348
833 coro->mainstack = 0; 1349 coro->slot = 0;
834 } 1350 }
835 1351
836 cctx_destroy (coro->cctx); 1352 cctx_destroy (coro->cctx);
837 SvREFCNT_dec (coro->args); 1353 SvREFCNT_dec (coro->args);
838 1354
1355 if (coro->next) coro->next->prev = coro->prev;
1356 if (coro->prev) coro->prev->next = coro->next;
1357 if (coro == coro_first) coro_first = coro->next;
1358
839 return 1; 1359 return 1;
840} 1360}
841 1361
842static int 1362static int
843coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1363coro_state_free (pTHX_ SV *sv, MAGIC *mg)
844{ 1364{
845 struct coro *coro = (struct coro *)mg->mg_ptr; 1365 struct coro *coro = (struct coro *)mg->mg_ptr;
846 mg->mg_ptr = 0; 1366 mg->mg_ptr = 0;
847 1367
1368 coro->hv = 0;
1369
848 if (--coro->refcnt < 0) 1370 if (--coro->refcnt < 0)
849 { 1371 {
850 coro_state_destroy (coro); 1372 coro_state_destroy (aTHX_ coro);
851 Safefree (coro); 1373 Safefree (coro);
852 } 1374 }
853 1375
854 return 0; 1376 return 0;
855} 1377}
… …
873#else 1395#else
874# define MGf_DUP 0 1396# define MGf_DUP 0
875#endif 1397#endif
876}; 1398};
877 1399
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 1400static void
901prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1401prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
902{ 1402{
903 ta->prev = SvSTATE (prev_sv); 1403 ta->prev = SvSTATE (prev_sv);
904 ta->next = SvSTATE (next_sv); 1404 ta->next = SvSTATE (next_sv);
1405 TRANSFER_CHECK (*ta);
905} 1406}
906 1407
907static void 1408static void
908api_transfer (SV *prev_sv, SV *next_sv) 1409api_transfer (SV *prev_sv, SV *next_sv)
909{ 1410{
1411 dTHX;
910 struct transfer_args ta; 1412 struct transfer_args ta;
911 1413
912 prepare_transfer (&ta, prev_sv, next_sv); 1414 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
913 TRANSFER (ta); 1415 TRANSFER (ta, 1);
914}
915
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} 1416}
927 1417
928/** Coro ********************************************************************/ 1418/** Coro ********************************************************************/
929 1419
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 1420static void
943coro_enq (SV *coro_sv) 1421coro_enq (pTHX_ SV *coro_sv)
944{ 1422{
945 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1423 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
946 coro_nready++;
947} 1424}
948 1425
949static SV * 1426static SV *
950coro_deq (int min_prio) 1427coro_deq (pTHX)
951{ 1428{
952 int prio = PRIO_MAX - PRIO_MIN; 1429 int prio;
953 1430
954 min_prio -= PRIO_MIN;
955 if (min_prio < 0)
956 min_prio = 0;
957
958 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1431 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
959 if (AvFILLp (coro_ready [prio]) >= 0) 1432 if (AvFILLp (coro_ready [prio]) >= 0)
960 {
961 coro_nready--;
962 return av_shift (coro_ready [prio]); 1433 return av_shift (coro_ready [prio]);
963 }
964 1434
965 return 0; 1435 return 0;
966} 1436}
967 1437
968static int 1438static int
969api_ready (SV *coro_sv) 1439api_ready (SV *coro_sv)
970{ 1440{
1441 dTHX;
971 struct coro *coro; 1442 struct coro *coro;
1443 SV *sv_hook;
1444 void (*xs_hook)(void);
972 1445
973 if (SvROK (coro_sv)) 1446 if (SvROK (coro_sv))
974 coro_sv = SvRV (coro_sv); 1447 coro_sv = SvRV (coro_sv);
975 1448
976 coro = SvSTATE (coro_sv); 1449 coro = SvSTATE (coro_sv);
… …
979 return 0; 1452 return 0;
980 1453
981 coro->flags |= CF_READY; 1454 coro->flags |= CF_READY;
982 1455
983 LOCK; 1456 LOCK;
1457
1458 sv_hook = coro_nready ? 0 : coro_readyhook;
1459 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1460
984 coro_enq (SvREFCNT_inc (coro_sv)); 1461 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1462 ++coro_nready;
1463
985 UNLOCK; 1464 UNLOCK;
1465
1466 if (sv_hook)
1467 {
1468 dSP;
1469
1470 ENTER;
1471 SAVETMPS;
1472
1473 PUSHMARK (SP);
1474 PUTBACK;
1475 call_sv (sv_hook, G_DISCARD);
1476 SPAGAIN;
1477
1478 FREETMPS;
1479 LEAVE;
1480 }
1481
1482 if (xs_hook)
1483 xs_hook ();
986 1484
987 return 1; 1485 return 1;
988} 1486}
989 1487
990static int 1488static int
991api_is_ready (SV *coro_sv) 1489api_is_ready (SV *coro_sv)
992{ 1490{
1491 dTHX;
993 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1492 return !!(SvSTATE (coro_sv)->flags & CF_READY);
994} 1493}
995 1494
996static void 1495static void
997prepare_schedule (struct transfer_args *ta) 1496prepare_schedule (pTHX_ struct transfer_args *ta)
998{ 1497{
999 SV *prev_sv, *next_sv; 1498 SV *prev_sv, *next_sv;
1000 1499
1001 for (;;) 1500 for (;;)
1002 { 1501 {
1003 LOCK; 1502 LOCK;
1004 next_sv = coro_deq (PRIO_MIN); 1503 next_sv = coro_deq (aTHX);
1005 UNLOCK;
1006 1504
1007 /* nothing to schedule: call the idle handler */ 1505 /* nothing to schedule: call the idle handler */
1008 if (!next_sv) 1506 if (expect_false (!next_sv))
1009 { 1507 {
1010 dSP; 1508 dSP;
1509 UNLOCK;
1011 1510
1012 ENTER; 1511 ENTER;
1013 SAVETMPS; 1512 SAVETMPS;
1014 1513
1015 PUSHMARK (SP); 1514 PUSHMARK (SP);
1016 PUTBACK; 1515 PUTBACK;
1017 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1516 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1517 SPAGAIN;
1018 1518
1019 FREETMPS; 1519 FREETMPS;
1020 LEAVE; 1520 LEAVE;
1021 continue; 1521 continue;
1022 } 1522 }
1023 1523
1024 ta->next = SvSTATE (next_sv); 1524 ta->next = SvSTATE (next_sv);
1025 1525
1026 /* cannot transfer to destroyed coros, skip and look for next */ 1526 /* cannot transfer to destroyed coros, skip and look for next */
1027 if (ta->next->flags & CF_DESTROYED) 1527 if (expect_false (ta->next->flags & CF_DESTROYED))
1028 { 1528 {
1529 UNLOCK;
1029 SvREFCNT_dec (next_sv); 1530 SvREFCNT_dec (next_sv);
1531 /* coro_nready is already taken care of by destroy */
1030 continue; 1532 continue;
1031 } 1533 }
1032 1534
1535 --coro_nready;
1536 UNLOCK;
1033 break; 1537 break;
1034 } 1538 }
1035 1539
1036 /* free this only after the transfer */ 1540 /* free this only after the transfer */
1037 prev_sv = SvRV (coro_current); 1541 prev_sv = SvRV (coro_current);
1038 SvRV_set (coro_current, next_sv);
1039 ta->prev = SvSTATE (prev_sv); 1542 ta->prev = SvSTATE (prev_sv);
1040 1543 TRANSFER_CHECK (*ta);
1041 assert (ta->next->flags & CF_READY); 1544 assert (ta->next->flags & CF_READY);
1042 ta->next->flags &= ~CF_READY; 1545 ta->next->flags &= ~CF_READY;
1546 SvRV_set (coro_current, next_sv);
1043 1547
1044 LOCK; 1548 LOCK;
1045 free_coro_mortal (); 1549 free_coro_mortal (aTHX);
1046 coro_mortal = prev_sv; 1550 coro_mortal = prev_sv;
1047 UNLOCK; 1551 UNLOCK;
1048} 1552}
1049 1553
1050static void 1554static void
1051prepare_cede (struct transfer_args *ta) 1555prepare_cede (pTHX_ struct transfer_args *ta)
1052{ 1556{
1053 api_ready (coro_current); 1557 api_ready (coro_current);
1054 prepare_schedule (ta); 1558 prepare_schedule (aTHX_ ta);
1055} 1559}
1056 1560
1057static int 1561static int
1058prepare_cede_notself (struct transfer_args *ta) 1562prepare_cede_notself (pTHX_ struct transfer_args *ta)
1059{ 1563{
1060 if (coro_nready) 1564 if (coro_nready)
1061 { 1565 {
1062 SV *prev = SvRV (coro_current); 1566 SV *prev = SvRV (coro_current);
1063 prepare_schedule (ta); 1567 prepare_schedule (aTHX_ ta);
1064 api_ready (prev); 1568 api_ready (prev);
1065 return 1; 1569 return 1;
1066 } 1570 }
1067 else 1571 else
1068 return 0; 1572 return 0;
1069} 1573}
1070 1574
1071static void 1575static void
1072api_schedule (void) 1576api_schedule (void)
1073{ 1577{
1578 dTHX;
1074 struct transfer_args ta; 1579 struct transfer_args ta;
1075 1580
1076 prepare_schedule (&ta); 1581 prepare_schedule (aTHX_ &ta);
1077 TRANSFER (ta); 1582 TRANSFER (ta, 1);
1078} 1583}
1079 1584
1080static int 1585static int
1081api_cede (void) 1586api_cede (void)
1082{ 1587{
1588 dTHX;
1083 struct transfer_args ta; 1589 struct transfer_args ta;
1084 1590
1085 prepare_cede (&ta); 1591 prepare_cede (aTHX_ &ta);
1086 1592
1087 if (ta.prev != ta.next) 1593 if (expect_true (ta.prev != ta.next))
1088 { 1594 {
1089 TRANSFER (ta); 1595 TRANSFER (ta, 1);
1090 return 1; 1596 return 1;
1091 } 1597 }
1092 else 1598 else
1093 return 0; 1599 return 0;
1094} 1600}
1095 1601
1096static int 1602static int
1097api_cede_notself (void) 1603api_cede_notself (void)
1098{ 1604{
1605 dTHX;
1099 struct transfer_args ta; 1606 struct transfer_args ta;
1100 1607
1101 if (prepare_cede_notself (&ta)) 1608 if (prepare_cede_notself (aTHX_ &ta))
1102 { 1609 {
1103 TRANSFER (ta); 1610 TRANSFER (ta, 1);
1104 return 1; 1611 return 1;
1105 } 1612 }
1106 else 1613 else
1107 return 0; 1614 return 0;
1108} 1615}
1109 1616
1617static void
1618api_trace (SV *coro_sv, int flags)
1619{
1620 dTHX;
1621 struct coro *coro = SvSTATE (coro_sv);
1622
1623 if (flags & CC_TRACE)
1624 {
1625 if (!coro->cctx)
1626 coro->cctx = cctx_new ();
1627 else if (!(coro->cctx->flags & CC_TRACE))
1628 croak ("cannot enable tracing on coroutine with custom stack");
1629
1630 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1631 }
1632 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1633 {
1634 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1635
1636 if (coro->flags & CF_RUNNING)
1637 PL_runops = RUNOPS_DEFAULT;
1638 else
1639 coro->slot->runops = RUNOPS_DEFAULT;
1640 }
1641}
1642
1643static int
1644coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1645{
1646 AV *padlist;
1647 AV *av = (AV *)mg->mg_obj;
1648
1649 abort ();
1650
1651 return 0;
1652}
1653
1654static MGVTBL coro_gensub_vtbl = {
1655 0, 0, 0, 0,
1656 coro_gensub_free
1657};
1658
1659/*****************************************************************************/
1660/* PerlIO::cede */
1661
1662typedef struct
1663{
1664 PerlIOBuf base;
1665 NV next, every;
1666} PerlIOCede;
1667
1668static IV
1669PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1670{
1671 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1672
1673 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1674 self->next = nvtime () + self->every;
1675
1676 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1677}
1678
1679static SV *
1680PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1681{
1682 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1683
1684 return newSVnv (self->every);
1685}
1686
1687static IV
1688PerlIOCede_flush (pTHX_ PerlIO *f)
1689{
1690 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1691 double now = nvtime ();
1692
1693 if (now >= self->next)
1694 {
1695 api_cede ();
1696 self->next = now + self->every;
1697 }
1698
1699 return PerlIOBuf_flush (aTHX_ f);
1700}
1701
1702static PerlIO_funcs PerlIO_cede =
1703{
1704 sizeof(PerlIO_funcs),
1705 "cede",
1706 sizeof(PerlIOCede),
1707 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1708 PerlIOCede_pushed,
1709 PerlIOBuf_popped,
1710 PerlIOBuf_open,
1711 PerlIOBase_binmode,
1712 PerlIOCede_getarg,
1713 PerlIOBase_fileno,
1714 PerlIOBuf_dup,
1715 PerlIOBuf_read,
1716 PerlIOBuf_unread,
1717 PerlIOBuf_write,
1718 PerlIOBuf_seek,
1719 PerlIOBuf_tell,
1720 PerlIOBuf_close,
1721 PerlIOCede_flush,
1722 PerlIOBuf_fill,
1723 PerlIOBase_eof,
1724 PerlIOBase_error,
1725 PerlIOBase_clearerr,
1726 PerlIOBase_setlinebuf,
1727 PerlIOBuf_get_base,
1728 PerlIOBuf_bufsiz,
1729 PerlIOBuf_get_ptr,
1730 PerlIOBuf_get_cnt,
1731 PerlIOBuf_set_ptrcnt,
1732};
1733
1734
1110MODULE = Coro::State PACKAGE = Coro::State 1735MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1111 1736
1112PROTOTYPES: DISABLE 1737PROTOTYPES: DISABLE
1113 1738
1114BOOT: 1739BOOT:
1115{ 1740{
1116#ifdef USE_ITHREADS 1741#ifdef USE_ITHREADS
1117 MUTEX_INIT (&coro_mutex); 1742 MUTEX_INIT (&coro_mutex);
1118#endif 1743#endif
1119 BOOT_PAGESIZE; 1744 BOOT_PAGESIZE;
1120 1745
1746 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1747 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1748
1749 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1750 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1751 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1752
1753 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1754 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1755 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1756
1121 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1757 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1122 1758
1759 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1760 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1123 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1761 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)); 1762 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1128 1763
1129 main_mainstack = PL_mainstack; 1764 main_mainstack = PL_mainstack;
1765 main_top_env = PL_top_env;
1130 1766
1767 while (main_top_env->je_prev)
1768 main_top_env = main_top_env->je_prev;
1769
1131 coroapi.ver = CORO_API_VERSION; 1770 coroapi.ver = CORO_API_VERSION;
1771 coroapi.rev = CORO_API_REVISION;
1132 coroapi.transfer = api_transfer; 1772 coroapi.transfer = api_transfer;
1773
1774 {
1775 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1776
1777 if (!svp) croak ("Time::HiRes is required");
1778 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1779
1780 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1781 }
1133 1782
1134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1783 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1135} 1784}
1136 1785
1137SV * 1786SV *
1138new (char *klass, ...) 1787new (char *klass, ...)
1139 CODE: 1788 CODE:
1140{ 1789{
1141 struct coro *coro; 1790 struct coro *coro;
1791 MAGIC *mg;
1142 HV *hv; 1792 HV *hv;
1143 int i; 1793 int i;
1144 1794
1145 Newz (0, coro, 1, struct coro); 1795 Newz (0, coro, 1, struct coro);
1146 coro->args = newAV (); 1796 coro->args = newAV ();
1147 coro->save = CORO_SAVE_ALL;
1148 coro->flags = CF_NEW; 1797 coro->flags = CF_NEW;
1149 1798
1799 if (coro_first) coro_first->prev = coro;
1800 coro->next = coro_first;
1801 coro_first = coro;
1802
1150 hv = newHV (); 1803 coro->hv = hv = newHV ();
1151 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1804 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1805 mg->mg_flags |= MGf_DUP;
1152 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1806 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1153 1807
1808 av_extend (coro->args, items - 1);
1154 for (i = 1; i < items; i++) 1809 for (i = 1; i < items; i++)
1155 av_push (coro->args, newSVsv (ST (i))); 1810 av_push (coro->args, newSVsv (ST (i)));
1156} 1811}
1157 OUTPUT: 1812 OUTPUT:
1158 RETVAL 1813 RETVAL
1159 1814
1160int 1815# these not obviously related functions are all rolled into the same xs
1161save (SV *coro, int new_save = -1) 1816# function to increase chances that they all will call transfer with the same
1162 CODE: 1817# stack offset
1163 RETVAL = api_save (coro, new_save);
1164 OUTPUT:
1165 RETVAL
1166
1167void 1818void
1168_set_stacklevel (...) 1819_set_stacklevel (...)
1169 ALIAS: 1820 ALIAS:
1170 Coro::State::transfer = 1 1821 Coro::State::transfer = 1
1171 Coro::schedule = 2 1822 Coro::schedule = 2
… …
1173 Coro::cede_notself = 4 1824 Coro::cede_notself = 4
1174 CODE: 1825 CODE:
1175{ 1826{
1176 struct transfer_args ta; 1827 struct transfer_args ta;
1177 1828
1829 PUTBACK;
1178 switch (ix) 1830 switch (ix)
1179 { 1831 {
1180 case 0: 1832 case 0:
1181 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1833 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1182 ta.next = 0; 1834 ta.next = 0;
… …
1184 1836
1185 case 1: 1837 case 1:
1186 if (items != 2) 1838 if (items != 2)
1187 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1839 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1188 1840
1189 prepare_transfer (&ta, ST (0), ST (1)); 1841 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1190 break; 1842 break;
1191 1843
1192 case 2: 1844 case 2:
1193 prepare_schedule (&ta); 1845 prepare_schedule (aTHX_ &ta);
1194 break; 1846 break;
1195 1847
1196 case 3: 1848 case 3:
1197 prepare_cede (&ta); 1849 prepare_cede (aTHX_ &ta);
1198 break; 1850 break;
1199 1851
1200 case 4: 1852 case 4:
1201 if (!prepare_cede_notself (&ta)) 1853 if (!prepare_cede_notself (aTHX_ &ta))
1202 XSRETURN_EMPTY; 1854 XSRETURN_EMPTY;
1203 1855
1204 break; 1856 break;
1205 } 1857 }
1858 SPAGAIN;
1206 1859
1207 BARRIER; 1860 BARRIER;
1861 PUTBACK;
1208 TRANSFER (ta); 1862 TRANSFER (ta, 0);
1209 1863 SPAGAIN; /* might be the sp of a different coroutine now */
1210 if (GIMME_V != G_VOID && ta.next != ta.prev) 1864 /* be extra careful not to ever do anything after TRANSFER */
1211 XSRETURN_YES;
1212} 1865}
1213 1866
1214bool 1867bool
1215_destroy (SV *coro_sv) 1868_destroy (SV *coro_sv)
1216 CODE: 1869 CODE:
1217 RETVAL = coro_state_destroy (SvSTATE (coro_sv)); 1870 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1218 OUTPUT: 1871 OUTPUT:
1219 RETVAL 1872 RETVAL
1220 1873
1221void 1874void
1222_exit (code) 1875_exit (int code)
1223 int code
1224 PROTOTYPE: $ 1876 PROTOTYPE: $
1225 CODE: 1877 CODE:
1226 _exit (code); 1878 _exit (code);
1879
1880int
1881cctx_stacksize (int new_stacksize = 0)
1882 CODE:
1883 RETVAL = coro_stacksize;
1884 if (new_stacksize)
1885 coro_stacksize = new_stacksize;
1886 OUTPUT:
1887 RETVAL
1227 1888
1228int 1889int
1229cctx_count () 1890cctx_count ()
1230 CODE: 1891 CODE:
1231 RETVAL = cctx_count; 1892 RETVAL = cctx_count;
… …
1237 CODE: 1898 CODE:
1238 RETVAL = cctx_idle; 1899 RETVAL = cctx_idle;
1239 OUTPUT: 1900 OUTPUT:
1240 RETVAL 1901 RETVAL
1241 1902
1903void
1904list ()
1905 PPCODE:
1906{
1907 struct coro *coro;
1908 for (coro = coro_first; coro; coro = coro->next)
1909 if (coro->hv)
1910 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1911}
1912
1913void
1914call (Coro::State coro, SV *coderef)
1915 ALIAS:
1916 eval = 1
1917 CODE:
1918{
1919 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1920 {
1921 struct coro temp;
1922
1923 if (!(coro->flags & CF_RUNNING))
1924 {
1925 PUTBACK;
1926 save_perl (aTHX_ &temp);
1927 load_perl (aTHX_ coro);
1928 }
1929
1930 {
1931 dSP;
1932 ENTER;
1933 SAVETMPS;
1934 PUTBACK;
1935 PUSHSTACK;
1936 PUSHMARK (SP);
1937
1938 if (ix)
1939 eval_sv (coderef, 0);
1940 else
1941 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1942
1943 POPSTACK;
1944 SPAGAIN;
1945 FREETMPS;
1946 LEAVE;
1947 PUTBACK;
1948 }
1949
1950 if (!(coro->flags & CF_RUNNING))
1951 {
1952 save_perl (aTHX_ coro);
1953 load_perl (aTHX_ &temp);
1954 SPAGAIN;
1955 }
1956 }
1957}
1958
1959SV *
1960is_ready (Coro::State coro)
1961 PROTOTYPE: $
1962 ALIAS:
1963 is_ready = CF_READY
1964 is_running = CF_RUNNING
1965 is_new = CF_NEW
1966 is_destroyed = CF_DESTROYED
1967 CODE:
1968 RETVAL = boolSV (coro->flags & ix);
1969 OUTPUT:
1970 RETVAL
1971
1972void
1973api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1974
1975SV *
1976has_cctx (Coro::State coro)
1977 PROTOTYPE: $
1978 CODE:
1979 RETVAL = boolSV (!!coro->cctx);
1980 OUTPUT:
1981 RETVAL
1982
1983int
1984is_traced (Coro::State coro)
1985 PROTOTYPE: $
1986 CODE:
1987 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1988 OUTPUT:
1989 RETVAL
1990
1991IV
1992rss (Coro::State coro)
1993 PROTOTYPE: $
1994 ALIAS:
1995 usecount = 1
1996 CODE:
1997 switch (ix)
1998 {
1999 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2000 case 1: RETVAL = coro->usecount; break;
2001 }
2002 OUTPUT:
2003 RETVAL
2004
2005void
2006force_cctx ()
2007 CODE:
2008 struct coro *coro = SvSTATE (coro_current);
2009 coro->cctx->idle_sp = 0;
2010
2011void
2012throw (Coro::State self, SV *throw = &PL_sv_undef)
2013 PROTOTYPE: $;$
2014 CODE:
2015 SvREFCNT_dec (self->throw);
2016 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2017
2018void
2019swap_defsv (Coro::State self)
2020 PROTOTYPE: $
2021 ALIAS:
2022 swap_defav = 1
2023 CODE:
2024 if (!self->slot)
2025 croak ("cannot swap state with coroutine that has no saved state");
2026 else
2027 {
2028 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2029 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2030
2031 SV *tmp = *src; *src = *dst; *dst = tmp;
2032 }
2033
1242MODULE = Coro::State PACKAGE = Coro 2034MODULE = Coro::State PACKAGE = Coro
1243 2035
1244BOOT: 2036BOOT:
1245{ 2037{
1246 int i; 2038 int i;
1247 2039
2040 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2041 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2042 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2043
2044 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2045 SvREADONLY_on (coro_current);
2046
1248 coro_stash = gv_stashpv ("Coro", TRUE); 2047 coro_stash = gv_stashpv ("Coro", TRUE);
1249 2048
1250 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2049 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1251 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2050 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1252 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2051 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1253 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2052 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1254 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2053 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1255 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2054 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1256 2055
1257 coro_current = get_sv ("Coro::current", FALSE);
1258 SvREADONLY_on (coro_current);
1259
1260 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2056 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1261 coro_ready[i] = newAV (); 2057 coro_ready[i] = newAV ();
1262 2058
1263 { 2059 {
1264 SV *sv = perl_get_sv("Coro::API", 1); 2060 SV *sv = perl_get_sv ("Coro::API", TRUE);
2061 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1265 2062
1266 coroapi.schedule = api_schedule; 2063 coroapi.schedule = api_schedule;
1267 coroapi.save = api_save;
1268 coroapi.cede = api_cede; 2064 coroapi.cede = api_cede;
1269 coroapi.cede_notself = api_cede_notself; 2065 coroapi.cede_notself = api_cede_notself;
1270 coroapi.ready = api_ready; 2066 coroapi.ready = api_ready;
1271 coroapi.is_ready = api_is_ready; 2067 coroapi.is_ready = api_is_ready;
1272 coroapi.nready = &coro_nready; 2068 coroapi.nready = &coro_nready;
… …
1281void 2077void
1282_set_current (SV *current) 2078_set_current (SV *current)
1283 PROTOTYPE: $ 2079 PROTOTYPE: $
1284 CODE: 2080 CODE:
1285 SvREFCNT_dec (SvRV (coro_current)); 2081 SvREFCNT_dec (SvRV (coro_current));
1286 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2082 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2083
2084void
2085_set_readyhook (SV *hook)
2086 PROTOTYPE: $
2087 CODE:
2088 LOCK;
2089 SvREFCNT_dec (coro_readyhook);
2090 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2091 UNLOCK;
1287 2092
1288int 2093int
1289prio (Coro::State coro, int newprio = 0) 2094prio (Coro::State coro, int newprio = 0)
1290 ALIAS: 2095 ALIAS:
1291 nice = 1 2096 nice = 1
… …
1313 CODE: 2118 CODE:
1314 RETVAL = boolSV (api_ready (self)); 2119 RETVAL = boolSV (api_ready (self));
1315 OUTPUT: 2120 OUTPUT:
1316 RETVAL 2121 RETVAL
1317 2122
1318SV *
1319is_ready (SV *self)
1320 PROTOTYPE: $
1321 CODE:
1322 RETVAL = boolSV (api_is_ready (self));
1323 OUTPUT:
1324 RETVAL
1325
1326int 2123int
1327nready (...) 2124nready (...)
1328 PROTOTYPE: 2125 PROTOTYPE:
1329 CODE: 2126 CODE:
1330 RETVAL = coro_nready; 2127 RETVAL = coro_nready;
1331 OUTPUT: 2128 OUTPUT:
1332 RETVAL 2129 RETVAL
1333 2130
2131# for async_pool speedup
2132void
2133_pool_1 (SV *cb)
2134 CODE:
2135{
2136 struct coro *coro = SvSTATE (coro_current);
2137 HV *hv = (HV *)SvRV (coro_current);
2138 AV *defav = GvAV (PL_defgv);
2139 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2140 AV *invoke_av;
2141 int i, len;
2142
2143 if (!invoke)
2144 {
2145 SV *old = PL_diehook;
2146 PL_diehook = 0;
2147 SvREFCNT_dec (old);
2148 croak ("\3async_pool terminate\2\n");
2149 }
2150
2151 SvREFCNT_dec (coro->saved_deffh);
2152 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2153
2154 hv_store (hv, "desc", sizeof ("desc") - 1,
2155 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2156
2157 invoke_av = (AV *)SvRV (invoke);
2158 len = av_len (invoke_av);
2159
2160 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2161
2162 if (len > 0)
2163 {
2164 av_fill (defav, len - 1);
2165 for (i = 0; i < len; ++i)
2166 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2167 }
2168
2169 SvREFCNT_dec (invoke);
2170}
2171
2172void
2173_pool_2 (SV *cb)
2174 CODE:
2175{
2176 struct coro *coro = SvSTATE (coro_current);
2177
2178 sv_setsv (cb, &PL_sv_undef);
2179
2180 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2181 coro->saved_deffh = 0;
2182
2183 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2184 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2185 {
2186 SV *old = PL_diehook;
2187 PL_diehook = 0;
2188 SvREFCNT_dec (old);
2189 croak ("\3async_pool terminate\2\n");
2190 }
2191
2192 av_clear (GvAV (PL_defgv));
2193 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2194 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2195
2196 coro->prio = 0;
2197
2198 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2199 api_trace (coro_current, 0);
2200
2201 av_push (av_async_pool, newSVsv (coro_current));
2202}
2203
2204#if 0
2205
2206void
2207_generator_call (...)
2208 PROTOTYPE: @
2209 PPCODE:
2210 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2211 xxxx
2212 abort ();
2213
2214SV *
2215gensub (SV *sub, ...)
2216 PROTOTYPE: &;@
2217 CODE:
2218{
2219 struct coro *coro;
2220 MAGIC *mg;
2221 CV *xcv;
2222 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2223 int i;
2224
2225 CvGV (ncv) = CvGV (cv);
2226 CvFILE (ncv) = CvFILE (cv);
2227
2228 Newz (0, coro, 1, struct coro);
2229 coro->args = newAV ();
2230 coro->flags = CF_NEW;
2231
2232 av_extend (coro->args, items - 1);
2233 for (i = 1; i < items; i++)
2234 av_push (coro->args, newSVsv (ST (i)));
2235
2236 CvISXSUB_on (ncv);
2237 CvXSUBANY (ncv).any_ptr = (void *)coro;
2238
2239 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2240
2241 CvXSUB (ncv) = CvXSUB (xcv);
2242 CvANON_on (ncv);
2243
2244 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2245 RETVAL = newRV_noinc ((SV *)ncv);
2246}
2247 OUTPUT:
2248 RETVAL
2249
2250#endif
2251
2252
1334MODULE = Coro::State PACKAGE = Coro::AIO 2253MODULE = Coro::State PACKAGE = Coro::AIO
1335 2254
1336SV * 2255void
1337_get_state () 2256_get_state (SV *self)
1338 CODE: 2257 PPCODE:
1339{ 2258{
1340 struct io_state *data; 2259 AV *defav = GvAV (PL_defgv);
1341 2260 AV *av = newAV ();
2261 int i;
1342 RETVAL = newSV (sizeof (struct io_state)); 2262 SV *data_sv = newSV (sizeof (struct io_state));
1343 data = (struct io_state *)SvPVX (RETVAL); 2263 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1344 SvCUR_set (RETVAL, sizeof (struct io_state)); 2264 SvCUR_set (data_sv, sizeof (struct io_state));
1345 SvPOK_only (RETVAL); 2265 SvPOK_only (data_sv);
1346 2266
1347 data->errorno = errno; 2267 data->errorno = errno;
1348 data->laststype = PL_laststype; 2268 data->laststype = PL_laststype;
1349 data->laststatval = PL_laststatval; 2269 data->laststatval = PL_laststatval;
1350 data->statcache = PL_statcache; 2270 data->statcache = PL_statcache;
2271
2272 av_extend (av, AvFILLp (defav) + 1 + 1);
2273
2274 for (i = 0; i <= AvFILLp (defav); ++i)
2275 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2276
2277 av_push (av, data_sv);
2278
2279 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2280
2281 api_ready (self);
1351} 2282}
1352 OUTPUT:
1353 RETVAL
1354 2283
1355void 2284void
1356_set_state (char *data_) 2285_set_state (SV *state)
1357 PROTOTYPE: $ 2286 PROTOTYPE: $
1358 CODE: 2287 PPCODE:
1359{ 2288{
1360 struct io_state *data = (void *)data_; 2289 AV *av = (AV *)SvRV (state);
2290 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2291 int i;
1361 2292
1362 errno = data->errorno; 2293 errno = data->errorno;
1363 PL_laststype = data->laststype; 2294 PL_laststype = data->laststype;
1364 PL_laststatval = data->laststatval; 2295 PL_laststatval = data->laststatval;
1365 PL_statcache = data->statcache; 2296 PL_statcache = data->statcache;
1366}
1367 2297
2298 EXTEND (SP, AvFILLp (av));
2299 for (i = 0; i < AvFILLp (av); ++i)
2300 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2301}
2302
2303
2304MODULE = Coro::State PACKAGE = Coro::AnyEvent
2305
2306BOOT:
2307 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2308
2309SV *
2310_schedule (...)
2311 PROTOTYPE: @
2312 CODE:
2313{
2314 static int incede;
2315
2316 api_cede_notself ();
2317
2318 ++incede;
2319 while (coro_nready >= incede && api_cede ())
2320 ;
2321
2322 sv_setsv (sv_activity, &PL_sv_undef);
2323 if (coro_nready >= incede)
2324 {
2325 PUSHMARK (SP);
2326 PUTBACK;
2327 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2328 SPAGAIN;
2329 }
2330
2331 --incede;
2332}
2333
2334
2335MODULE = Coro::State PACKAGE = PerlIO::cede
2336
2337BOOT:
2338 PerlIO_define_layer (aTHX_ &PerlIO_cede);

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