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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs.
Revision 1.244 by root, Sun Sep 21 18:29:39 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"
6 9
7#include "patchlevel.h" 10#include "patchlevel.h"
8 11
9#if USE_VALGRIND
10# include <valgrind/valgrind.h>
11#endif
12
13/* the maximum number of idle cctx that will be pooled */
14#define MAX_IDLE_CCTX 8
15
16#define PERL_VERSION_ATLEAST(a,b,c) \
17 (PERL_REVISION > (a) \
18 || (PERL_REVISION == (a) \
19 && (PERL_VERSION > (b) \
20 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22#if !PERL_VERSION_ATLEAST (5,6,0)
23# ifndef PL_ppaddr
24# define PL_ppaddr ppaddr
25# endif
26# ifndef call_sv
27# define call_sv perl_call_sv
28# endif
29# ifndef get_sv
30# define get_sv perl_get_sv
31# endif
32# ifndef get_cv
33# define get_cv perl_get_cv
34# endif
35# ifndef IS_PADGV
36# define IS_PADGV(v) 0
37# endif
38# ifndef IS_PADCONST
39# define IS_PADCONST(v) 0
40# endif
41#endif
42
43/* 5.8.7 */
44#ifndef SvRV_set
45# define SvRV_set(s,v) SvRV(s) = (v)
46#endif
47
48#include <stdio.h> 12#include <stdio.h>
49#include <errno.h> 13#include <errno.h>
50#include <assert.h> 14#include <assert.h>
51 15
52#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 16#ifdef WIN32
53# undef STACKGUARD 17# undef setjmp
54#endif 18# undef longjmp
55 19# undef _exit
56#ifndef STACKGUARD 20# define setjmp _setjmp // deep magic, don't ask
57# define STACKGUARD 0 21#else
22# include <inttypes.h> /* most portable stdint.h */
58#endif 23#endif
59 24
60#ifdef HAVE_MMAP 25#ifdef HAVE_MMAP
61# include <unistd.h> 26# include <unistd.h>
62# include <sys/mman.h> 27# include <sys/mman.h>
… …
78#else 43#else
79# define PAGESIZE 0 44# define PAGESIZE 0
80# define BOOT_PAGESIZE (void)0 45# define BOOT_PAGESIZE (void)0
81#endif 46#endif
82 47
83/* The next macro should declare a variable stacklevel that contains and approximation 48#if CORO_USE_VALGRIND
84 * to the current C stack pointer. Its property is that it changes with each call 49# include <valgrind/valgrind.h>
85 * and should be unique. */ 50# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51#else
52# define REGISTER_STACK(cctx,start,end)
53#endif
54
55/* the maximum number of idle cctx that will be pooled */
56#define MAX_IDLE_CCTX 8
57
58#define PERL_VERSION_ATLEAST(a,b,c) \
59 (PERL_REVISION > (a) \
60 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \
62 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
63
64#if !PERL_VERSION_ATLEAST (5,6,0)
65# ifndef PL_ppaddr
66# define PL_ppaddr ppaddr
67# endif
68# ifndef call_sv
69# define call_sv perl_call_sv
70# endif
71# ifndef get_sv
72# define get_sv perl_get_sv
73# endif
74# ifndef get_cv
75# define get_cv perl_get_cv
76# endif
77# ifndef IS_PADGV
78# define IS_PADGV(v) 0
79# endif
80# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0
82# endif
83#endif
84
85/* 5.8.8 */
86#ifndef GV_NOTQUAL
87# define GV_NOTQUAL 0
88#endif
89#ifndef newSV
90# define newSV(l) NEWSV(0,l)
91#endif
92
93/* 5.11 */
94#ifndef CxHASARGS
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96#endif
97
98/* 5.8.7 */
99#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v)
101#endif
102
103#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
104# undef CORO_STACKGUARD
105#endif
106
107#ifndef CORO_STACKGUARD
108# define CORO_STACKGUARD 0
109#endif
110
111/* prefer perl internal functions over our own? */
112#ifndef CORO_PREFER_PERL_FUNCTIONS
113# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif
115
116/* The next macros try to return the current stack pointer, in an as
117 * portable way as possible. */
86#define dSTACKLEVEL int stacklevel 118#define dSTACKLEVEL volatile char stacklevel
87#define STACKLEVEL ((void *)&stacklevel) 119#define STACKLEVEL ((void *)&stacklevel)
88 120
89#define IN_DESTRUCT (PL_main_cv == Nullcv) 121#define IN_DESTRUCT (PL_main_cv == Nullcv)
90 122
91#if __GNUC__ >= 3 123#if __GNUC__ >= 3
92# define attribute(x) __attribute__(x) 124# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value))
93#else 127#else
94# define attribute(x) 128# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr)
95#endif 131#endif
132
133#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1)
96 135
97#define NOINLINE attribute ((noinline)) 136#define NOINLINE attribute ((noinline))
98 137
99#include "CoroAPI.h" 138#include "CoroAPI.h"
100 139
… …
105#else 144#else
106# define LOCK (void)0 145# define LOCK (void)0
107# define UNLOCK (void)0 146# define UNLOCK (void)0
108#endif 147#endif
109 148
149/* helper storage struct for Coro::AIO */
110struct io_state 150struct io_state
111{ 151{
112 int errorno; 152 int errorno;
113 I32 laststype; 153 I32 laststype;
114 int laststatval; 154 int laststatval;
115 Stat_t statcache; 155 Stat_t statcache;
116}; 156};
117 157
158static size_t coro_stacksize = CORO_STACKSIZE;
118static struct CoroAPI coroapi; 159static struct CoroAPI coroapi;
119static AV *main_mainstack; /* used to differentiate between $main and others */ 160static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env;
120static HV *coro_state_stash, *coro_stash; 162static HV *coro_state_stash, *coro_stash;
121static SV *coro_mortal; /* will be freed after next transfer */ 163static volatile SV *coro_mortal; /* will be freed after next transfer */
164
165static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook;
168static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */
170
171/* async_pool helper stuff */
172static SV *sv_pool_rss;
173static SV *sv_pool_size;
174static AV *av_async_pool;
175
176/* Coro::AnyEvent */
177static SV *sv_activity;
122 178
123static struct coro_cctx *cctx_first; 179static struct coro_cctx *cctx_first;
124static int cctx_count, cctx_idle; 180static int cctx_count, cctx_idle;
181
182enum {
183 CC_MAPPED = 0x01,
184 CC_NOREUSE = 0x02, /* throw this away after tracing */
185 CC_TRACE = 0x04,
186 CC_TRACE_SUB = 0x08, /* trace sub calls */
187 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189};
125 190
126/* this is a structure representing a c-level coroutine */ 191/* this is a structure representing a c-level coroutine */
127typedef struct coro_cctx { 192typedef struct coro_cctx {
128 struct coro_cctx *next; 193 struct coro_cctx *next;
129 194
130 /* the stack */ 195 /* the stack */
131 void *sptr; 196 void *sptr;
132 long ssize; /* positive == mmap, otherwise malloc */ 197 size_t ssize;
133 198
134 /* cpu state */ 199 /* cpu state */
135 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
136 JMPENV *top_env; 202 JMPENV *top_env;
137 coro_context cctx; 203 coro_context cctx;
138 204
139 int inuse;
140
141#if USE_VALGRIND 205#if CORO_USE_VALGRIND
142 int valgrind_id; 206 int valgrind_id;
143#endif 207#endif
208 unsigned char flags;
144} coro_cctx; 209} coro_cctx;
145 210
146enum { 211enum {
147 CF_RUNNING = 0x0001, /* coroutine is running */ 212 CF_RUNNING = 0x0001, /* coroutine is running */
148 CF_READY = 0x0002, /* coroutine is ready */ 213 CF_READY = 0x0002, /* coroutine is ready */
149 CF_NEW = 0x0004, /* ahs never been switched to */ 214 CF_NEW = 0x0004, /* has never been switched to */
215 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
150}; 216};
217
218/* the structure where most of the perl state is stored, overlaid on the cxstack */
219typedef struct {
220 SV *defsv;
221 AV *defav;
222 SV *errsv;
223 SV *irsgv;
224#define VAR(name,type) type name;
225# include "state.h"
226#undef VAR
227} perl_slots;
228
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
151 230
152/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
153struct coro { 232struct coro {
154 /* the c coroutine allocated to this perl coroutine, if any */ 233 /* the c coroutine allocated to this perl coroutine, if any */
155 coro_cctx *cctx; 234 coro_cctx *cctx;
156 235
236 /* process data */
237 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */
239
157 /* data associated with this coroutine (initial args) */ 240 AV *args; /* data associated with this coroutine (initial args) */
158 AV *args; 241 int refcnt; /* coroutines are refcounted, yes */
159 int refcnt;
160 int save; /* CORO_SAVE flags */
161 int flags; /* CF_ flags */ 242 int flags; /* CF_ flags */
243 HV *hv; /* the perl hash associated with this coro, if any */
162 244
163 /* optionally saved, might be zero */ 245 /* statistics */
164 AV *defav; /* @_ */ 246 int usecount; /* number of transfers to this coro */
165 SV *defsv; /* $_ */
166 SV *errsv; /* $@ */
167 SV *irssv; /* $/ */
168 SV *irssv_sv; /* real $/ cache */
169
170#define VAR(name,type) type name;
171# include "state.h"
172#undef VAR
173 247
174 /* coro process data */ 248 /* coro process data */
175 int prio; 249 int prio;
250 SV *throw; /* exception to be thrown */
251
252 /* async_pool */
253 SV *saved_deffh;
254
255 /* linked list */
256 struct coro *next, *prev;
176}; 257};
177 258
178typedef struct coro *Coro__State; 259typedef struct coro *Coro__State;
179typedef struct coro *Coro__State_or_hashref; 260typedef struct coro *Coro__State_or_hashref;
180 261
262/** Coro ********************************************************************/
263
264#define PRIO_MAX 3
265#define PRIO_HIGH 1
266#define PRIO_NORMAL 0
267#define PRIO_LOW -1
268#define PRIO_IDLE -3
269#define PRIO_MIN -4
270
271/* for Coro.pm */
272static SV *coro_current;
273static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
275static int coro_nready;
276static struct coro *coro_first;
277
278/** lowlevel stuff **********************************************************/
279
280static SV *
281coro_get_sv (pTHX_ const char *name, int create)
282{
283#if PERL_VERSION_ATLEAST (5,10,0)
284 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
285 get_sv (name, create);
286#endif
287 return get_sv (name, create);
288}
289
181static AV * 290static AV *
291coro_get_av (pTHX_ const char *name, int create)
292{
293#if PERL_VERSION_ATLEAST (5,10,0)
294 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
295 get_av (name, create);
296#endif
297 return get_av (name, create);
298}
299
300static HV *
301coro_get_hv (pTHX_ const char *name, int create)
302{
303#if PERL_VERSION_ATLEAST (5,10,0)
304 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
305 get_hv (name, create);
306#endif
307 return get_hv (name, create);
308}
309
310static AV *
182coro_clone_padlist (CV *cv) 311coro_clone_padlist (pTHX_ CV *cv)
183{ 312{
184 AV *padlist = CvPADLIST (cv); 313 AV *padlist = CvPADLIST (cv);
185 AV *newpadlist, *newpad; 314 AV *newpadlist, *newpad;
186 315
187 newpadlist = newAV (); 316 newpadlist = newAV ();
188 AvREAL_off (newpadlist); 317 AvREAL_off (newpadlist);
189#if PERL_VERSION_ATLEAST (5,9,0) 318#if PERL_VERSION_ATLEAST (5,10,0)
190 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 319 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
191#else 320#else
192 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
193#endif 322#endif
194 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
… …
199 328
200 return newpadlist; 329 return newpadlist;
201} 330}
202 331
203static void 332static void
204free_padlist (AV *padlist) 333free_padlist (pTHX_ AV *padlist)
205{ 334{
206 /* may be during global destruction */ 335 /* may be during global destruction */
207 if (SvREFCNT (padlist)) 336 if (SvREFCNT (padlist))
208 { 337 {
209 I32 i = AvFILLp (padlist); 338 I32 i = AvFILLp (padlist);
… …
230 AV *padlist; 359 AV *padlist;
231 AV *av = (AV *)mg->mg_obj; 360 AV *av = (AV *)mg->mg_obj;
232 361
233 /* casting is fun. */ 362 /* casting is fun. */
234 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 363 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
235 free_padlist (padlist); 364 free_padlist (aTHX_ padlist);
236 365
237 SvREFCNT_dec (av); 366 SvREFCNT_dec (av);
238 367
239 return 0; 368 return 0;
240} 369}
241 370
242#define PERL_MAGIC_coro PERL_MAGIC_ext 371#define CORO_MAGIC_type_cv PERL_MAGIC_ext
372#define CORO_MAGIC_type_state PERL_MAGIC_ext
243 373
244static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 374static MGVTBL coro_cv_vtbl = {
375 0, 0, 0, 0,
376 coro_cv_free
377};
245 378
246#define CORO_MAGIC(cv) \ 379#define CORO_MAGIC(sv,type) \
247 SvMAGIC (cv) \ 380 SvMAGIC (sv) \
248 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 381 ? SvMAGIC (sv)->mg_type == type \
249 ? SvMAGIC (cv) \ 382 ? SvMAGIC (sv) \
250 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 383 : mg_find (sv, type) \
251 : 0 384 : 0
385
386#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
387#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
388
389static struct coro *
390SvSTATE_ (pTHX_ SV *coro)
391{
392 HV *stash;
393 MAGIC *mg;
394
395 if (SvROK (coro))
396 coro = SvRV (coro);
397
398 if (expect_false (SvTYPE (coro) != SVt_PVHV))
399 croak ("Coro::State object required");
400
401 stash = SvSTASH (coro);
402 if (expect_false (stash != coro_stash && stash != coro_state_stash))
403 {
404 /* very slow, but rare, check */
405 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
406 croak ("Coro::State object required");
407 }
408
409 mg = CORO_MAGIC_state (coro);
410 return (struct coro *)mg->mg_ptr;
411}
412
413#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
252 414
253/* the next two functions merely cache the padlists */ 415/* the next two functions merely cache the padlists */
254static void 416static void
255get_padlist (CV *cv) 417get_padlist (pTHX_ CV *cv)
256{ 418{
257 MAGIC *mg = CORO_MAGIC (cv); 419 MAGIC *mg = CORO_MAGIC_cv (cv);
258 AV *av; 420 AV *av;
259 421
260 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 422 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
261 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 423 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
262 else 424 else
263 { 425 {
264#if 0 426#if CORO_PREFER_PERL_FUNCTIONS
265 /* this is probably cleaner, but also slower? */ 427 /* this is probably cleaner? but also slower! */
428 /* in practise, it seems to be less stable */
266 CV *cp = Perl_cv_clone (cv); 429 CV *cp = Perl_cv_clone (cv);
267 CvPADLIST (cv) = CvPADLIST (cp); 430 CvPADLIST (cv) = CvPADLIST (cp);
268 CvPADLIST (cp) = 0; 431 CvPADLIST (cp) = 0;
269 SvREFCNT_dec (cp); 432 SvREFCNT_dec (cp);
270#else 433#else
271 CvPADLIST (cv) = coro_clone_padlist (cv); 434 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
272#endif 435#endif
273 } 436 }
274} 437}
275 438
276static void 439static void
277put_padlist (CV *cv) 440put_padlist (pTHX_ CV *cv)
278{ 441{
279 MAGIC *mg = CORO_MAGIC (cv); 442 MAGIC *mg = CORO_MAGIC_cv (cv);
280 AV *av; 443 AV *av;
281 444
282 if (!mg) 445 if (expect_false (!mg))
283 { 446 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
284 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
285 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
286 mg->mg_virtual = &vtbl_coro;
287 mg->mg_obj = (SV *)newAV ();
288 }
289 447
290 av = (AV *)mg->mg_obj; 448 av = (AV *)mg->mg_obj;
291 449
292 if (AvFILLp (av) >= AvMAX (av)) 450 if (expect_false (AvFILLp (av) >= AvMAX (av)))
293 av_extend (av, AvMAX (av) + 1); 451 av_extend (av, AvMAX (av) + 1);
294 452
295 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 453 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
296} 454}
297 455
298#define SB do { 456/** load & save, init *******************************************************/
299#define SE } while (0)
300
301#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
302 457
303static void 458static void
304load_perl (Coro__State c) 459load_perl (pTHX_ Coro__State c)
305{ 460{
461 perl_slots *slot = c->slot;
462 c->slot = 0;
463
464 PL_mainstack = c->mainstack;
465
466 GvSV (PL_defgv) = slot->defsv;
467 GvAV (PL_defgv) = slot->defav;
468 GvSV (PL_errgv) = slot->errsv;
469 GvSV (irsgv) = slot->irsgv;
470
306#define VAR(name,type) PL_ ## name = c->name; 471 #define VAR(name,type) PL_ ## name = slot->name;
307# include "state.h" 472 # include "state.h"
308#undef VAR 473 #undef VAR
309
310 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
311 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
312 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
313 if (c->irssv)
314 {
315 if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
316 SvREFCNT_dec (c->irssv);
317 else
318 {
319 REPLACE_SV (PL_rs, c->irssv);
320 if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
321 sv_setsv (c->irssv_sv, PL_rs);
322 }
323 }
324 474
325 { 475 {
326 dSP; 476 dSP;
477
327 CV *cv; 478 CV *cv;
328 479
329 /* now do the ugly restore mess */ 480 /* now do the ugly restore mess */
330 while ((cv = (CV *)POPs)) 481 while (expect_true (cv = (CV *)POPs))
331 { 482 {
332 put_padlist (cv); /* mark this padlist as available */ 483 put_padlist (aTHX_ cv); /* mark this padlist as available */
333 CvDEPTH (cv) = PTR2IV (POPs); 484 CvDEPTH (cv) = PTR2IV (POPs);
334 CvPADLIST (cv) = (AV *)POPs; 485 CvPADLIST (cv) = (AV *)POPs;
335 } 486 }
336 487
337 PUTBACK; 488 PUTBACK;
338 } 489 }
339} 490}
340 491
341static void 492static void
342save_perl (Coro__State c) 493save_perl (pTHX_ Coro__State c)
343{ 494{
344 { 495 {
345 dSP; 496 dSP;
346 I32 cxix = cxstack_ix; 497 I32 cxix = cxstack_ix;
347 PERL_CONTEXT *ccstk = cxstack; 498 PERL_CONTEXT *ccstk = cxstack;
… …
350 /* 501 /*
351 * the worst thing you can imagine happens first - we have to save 502 * the worst thing you can imagine happens first - we have to save
352 * (and reinitialize) all cv's in the whole callchain :( 503 * (and reinitialize) all cv's in the whole callchain :(
353 */ 504 */
354 505
355 EXTEND (SP, 3 + 1);
356 PUSHs (Nullsv); 506 XPUSHs (Nullsv);
357 /* this loop was inspired by pp_caller */ 507 /* this loop was inspired by pp_caller */
358 for (;;) 508 for (;;)
359 { 509 {
360 while (cxix >= 0) 510 while (expect_true (cxix >= 0))
361 { 511 {
362 PERL_CONTEXT *cx = &ccstk[cxix--]; 512 PERL_CONTEXT *cx = &ccstk[cxix--];
363 513
364 if (CxTYPE (cx) == CXt_SUB) 514 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
365 { 515 {
366 CV *cv = cx->blk_sub.cv; 516 CV *cv = cx->blk_sub.cv;
367 517
368 if (CvDEPTH (cv)) 518 if (expect_true (CvDEPTH (cv)))
369 { 519 {
370 EXTEND (SP, 3); 520 EXTEND (SP, 3);
371 PUSHs ((SV *)CvPADLIST (cv)); 521 PUSHs ((SV *)CvPADLIST (cv));
372 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 522 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
373 PUSHs ((SV *)cv); 523 PUSHs ((SV *)cv);
374 524
375 CvDEPTH (cv) = 0; 525 CvDEPTH (cv) = 0;
376 get_padlist (cv); 526 get_padlist (aTHX_ cv);
377 } 527 }
378 } 528 }
379 } 529 }
380 530
381 if (top_si->si_type == PERLSI_MAIN) 531 if (expect_true (top_si->si_type == PERLSI_MAIN))
382 break; 532 break;
383 533
384 top_si = top_si->si_prev; 534 top_si = top_si->si_prev;
385 ccstk = top_si->si_cxstack; 535 ccstk = top_si->si_cxstack;
386 cxix = top_si->si_cxix; 536 cxix = top_si->si_cxix;
387 } 537 }
388 538
389 PUTBACK; 539 PUTBACK;
390 } 540 }
391 541
392 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 542 /* allocate some space on the context stack for our purposes */
393 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 543 /* we manually unroll here, as usually 2 slots is enough */
394 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 544 if (SLOT_COUNT >= 1) CXINC;
395 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 545 if (SLOT_COUNT >= 2) CXINC;
546 if (SLOT_COUNT >= 3) CXINC;
547 {
548 int i;
549 for (i = 3; i < SLOT_COUNT; ++i)
550 CXINC;
551 }
552 cxstack_ix -= SLOT_COUNT; /* undo allocation */
396 553
554 c->mainstack = PL_mainstack;
555
556 {
557 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
558
559 slot->defav = GvAV (PL_defgv);
560 slot->defsv = DEFSV;
561 slot->errsv = ERRSV;
562 slot->irsgv = GvSV (irsgv);
563
397#define VAR(name,type)c->name = PL_ ## name; 564 #define VAR(name,type) slot->name = PL_ ## name;
398# include "state.h" 565 # include "state.h"
399#undef VAR 566 #undef VAR
567 }
400} 568}
401 569
402/* 570/*
403 * allocate various perl stacks. This is an exact copy 571 * allocate various perl stacks. This is an exact copy
404 * of perl.c:init_stacks, except that it uses less memory 572 * of perl.c:init_stacks, except that it uses less memory
405 * on the (sometimes correct) assumption that coroutines do 573 * on the (sometimes correct) assumption that coroutines do
406 * not usually need a lot of stackspace. 574 * not usually need a lot of stackspace.
407 */ 575 */
408#if USE_PERL_INIT_STACKS 576#if CORO_PREFER_PERL_FUNCTIONS
409# define coro_init_stacks init_stacks 577# define coro_init_stacks init_stacks
410#else 578#else
411
412static void 579static void
413coro_init_stacks () 580coro_init_stacks (pTHX)
414{ 581{
415 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 582 PL_curstackinfo = new_stackinfo(32, 8);
416 PL_curstackinfo->si_type = PERLSI_MAIN; 583 PL_curstackinfo->si_type = PERLSI_MAIN;
417 PL_curstack = PL_curstackinfo->si_stack; 584 PL_curstack = PL_curstackinfo->si_stack;
418 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 585 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
419 586
420 PL_stack_base = AvARRAY(PL_curstack); 587 PL_stack_base = AvARRAY(PL_curstack);
421 PL_stack_sp = PL_stack_base; 588 PL_stack_sp = PL_stack_base;
422 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 589 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
423 590
424 New(50,PL_tmps_stack,128,SV*); 591 New(50,PL_tmps_stack,32,SV*);
425 PL_tmps_floor = -1; 592 PL_tmps_floor = -1;
426 PL_tmps_ix = -1; 593 PL_tmps_ix = -1;
427 PL_tmps_max = 128; 594 PL_tmps_max = 32;
428 595
429 New(54,PL_markstack,32,I32); 596 New(54,PL_markstack,16,I32);
430 PL_markstack_ptr = PL_markstack; 597 PL_markstack_ptr = PL_markstack;
431 PL_markstack_max = PL_markstack + 32; 598 PL_markstack_max = PL_markstack + 16;
432 599
433#ifdef SET_MARK_OFFSET 600#ifdef SET_MARK_OFFSET
434 SET_MARK_OFFSET; 601 SET_MARK_OFFSET;
435#endif 602#endif
436 603
437 New(54,PL_scopestack,32,I32); 604 New(54,PL_scopestack,8,I32);
438 PL_scopestack_ix = 0; 605 PL_scopestack_ix = 0;
439 PL_scopestack_max = 32; 606 PL_scopestack_max = 8;
440 607
441 New(54,PL_savestack,64,ANY); 608 New(54,PL_savestack,24,ANY);
442 PL_savestack_ix = 0; 609 PL_savestack_ix = 0;
443 PL_savestack_max = 64; 610 PL_savestack_max = 24;
444 611
445#if !PERL_VERSION_ATLEAST (5,9,0) 612#if !PERL_VERSION_ATLEAST (5,10,0)
446 New(54,PL_retstack,16,OP*); 613 New(54,PL_retstack,4,OP*);
447 PL_retstack_ix = 0; 614 PL_retstack_ix = 0;
448 PL_retstack_max = 16; 615 PL_retstack_max = 4;
449#endif 616#endif
450} 617}
618#endif
451 619
452/* 620/*
453 * destroy the stacks, the callchain etc... 621 * destroy the stacks, the callchain etc...
454 */ 622 */
455static void 623static void
456coro_destroy_stacks () 624coro_destroy_stacks (pTHX)
457{ 625{
458 if (!IN_DESTRUCT)
459 {
460 /* restore all saved variables and stuff */
461 LEAVE_SCOPE (0);
462 assert (PL_tmps_floor == -1);
463
464 /* free all temporaries */
465 FREETMPS;
466 assert (PL_tmps_ix == -1);
467
468 POPSTACK_TO (PL_mainstack);
469 }
470
471 while (PL_curstackinfo->si_next) 626 while (PL_curstackinfo->si_next)
472 PL_curstackinfo = PL_curstackinfo->si_next; 627 PL_curstackinfo = PL_curstackinfo->si_next;
473 628
474 while (PL_curstackinfo) 629 while (PL_curstackinfo)
475 { 630 {
… …
485 640
486 Safefree (PL_tmps_stack); 641 Safefree (PL_tmps_stack);
487 Safefree (PL_markstack); 642 Safefree (PL_markstack);
488 Safefree (PL_scopestack); 643 Safefree (PL_scopestack);
489 Safefree (PL_savestack); 644 Safefree (PL_savestack);
490#if !PERL_VERSION_ATLEAST (5,9,0) 645#if !PERL_VERSION_ATLEAST (5,10,0)
491 Safefree (PL_retstack); 646 Safefree (PL_retstack);
492#endif 647#endif
493} 648}
649
650static size_t
651coro_rss (pTHX_ struct coro *coro)
652{
653 size_t rss = sizeof (*coro);
654
655 if (coro->mainstack)
656 {
657 perl_slots tmp_slot;
658 perl_slots *slot;
659
660 if (coro->flags & CF_RUNNING)
661 {
662 slot = &tmp_slot;
663
664 #define VAR(name,type) slot->name = PL_ ## name;
665 # include "state.h"
666 #undef VAR
667 }
668 else
669 slot = coro->slot;
670
671 rss += sizeof (slot->curstackinfo);
672 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
673 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
674 rss += slot->tmps_max * sizeof (SV *);
675 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
676 rss += slot->scopestack_max * sizeof (I32);
677 rss += slot->savestack_max * sizeof (ANY);
678
679#if !PERL_VERSION_ATLEAST (5,10,0)
680 rss += slot->retstack_max * sizeof (OP *);
494#endif 681#endif
682 }
683
684 return rss;
685}
686
687/** coroutine stack handling ************************************************/
688
689static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
690static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
691static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
692
693/* apparently < 5.8.8 */
694#ifndef MgPV_nolen_const
695#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
696 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
697 (const char*)(mg)->mg_ptr)
698#endif
699
700/*
701 * This overrides the default magic get method of %SIG elements.
702 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
703 * and instead of tryign to save and restore the hash elements, we just provide
704 * readback here.
705 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
706 * not expecting this to actually change the hook. This is a potential problem
707 * when a schedule happens then, but we ignore this.
708 */
709static int
710coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
711{
712 const char *s = MgPV_nolen_const (mg);
713
714 if (*s == '_')
715 {
716 SV **svp = 0;
717
718 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
719 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
720
721 if (svp)
722 {
723 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
724 return 0;
725 }
726 }
727
728 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
729}
730
731static int
732coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
733{
734 const char *s = MgPV_nolen_const (mg);
735
736 if (*s == '_')
737 {
738 SV **svp = 0;
739
740 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
741 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
742
743 if (svp)
744 {
745 SV *old = *svp;
746 *svp = 0;
747 SvREFCNT_dec (old);
748 return 0;
749 }
750 }
751
752 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
753}
754
755static int
756coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
757{
758 const char *s = MgPV_nolen_const (mg);
759
760 if (*s == '_')
761 {
762 SV **svp = 0;
763
764 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
765 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
766
767 if (svp)
768 {
769 SV *old = *svp;
770 *svp = newSVsv (sv);
771 SvREFCNT_dec (old);
772 return 0;
773 }
774 }
775
776 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
777}
495 778
496static void 779static void
497setup_coro (struct coro *coro) 780coro_setup (pTHX_ struct coro *coro)
498{ 781{
499 /* 782 /*
500 * emulate part of the perl startup here. 783 * emulate part of the perl startup here.
501 */ 784 */
502
503 coro_init_stacks (); 785 coro_init_stacks (aTHX);
504 786
787 PL_runops = RUNOPS_DEFAULT;
505 PL_curcop = &PL_compiling; 788 PL_curcop = &PL_compiling;
506 PL_in_eval = EVAL_NULL; 789 PL_in_eval = EVAL_NULL;
790 PL_comppad = 0;
507 PL_curpm = 0; 791 PL_curpm = 0;
792 PL_curpad = 0;
508 PL_localizing = 0; 793 PL_localizing = 0;
509 PL_dirty = 0; 794 PL_dirty = 0;
510 PL_restartop = 0; 795 PL_restartop = 0;
796#if PERL_VERSION_ATLEAST (5,10,0)
797 PL_parser = 0;
798#endif
799
800 /* recreate the die/warn hooks */
801 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
802 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
803
804 GvSV (PL_defgv) = newSV (0);
805 GvAV (PL_defgv) = coro->args; coro->args = 0;
806 GvSV (PL_errgv) = newSV (0);
807 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
808 PL_rs = newSVsv (GvSV (irsgv));
809 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
511 810
512 { 811 {
513 dSP; 812 dSP;
514 LOGOP myop; 813 LOGOP myop;
515 814
516 SvREFCNT_dec (GvAV (PL_defgv));
517 GvAV (PL_defgv) = coro->args; coro->args = 0;
518
519 Zero (&myop, 1, LOGOP); 815 Zero (&myop, 1, LOGOP);
520 myop.op_next = Nullop; 816 myop.op_next = Nullop;
521 myop.op_flags = OPf_WANT_VOID; 817 myop.op_flags = OPf_WANT_VOID;
522 818
523 PUSHMARK (SP); 819 PUSHMARK (SP);
524 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 820 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
525 PUTBACK; 821 PUTBACK;
526 PL_op = (OP *)&myop; 822 PL_op = (OP *)&myop;
527 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 823 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
528 SPAGAIN; 824 SPAGAIN;
529 } 825 }
530 826
531 ENTER; /* necessary e.g. for dounwind */ 827 /* this newly created coroutine might be run on an existing cctx which most
828 * likely was suspended in set_stacklevel, called from entersub.
829 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
830 * so we ENTER here for symmetry
831 */
832 ENTER;
532} 833}
533 834
534static void 835static void
836coro_destroy (pTHX_ struct coro *coro)
837{
838 if (!IN_DESTRUCT)
839 {
840 /* restore all saved variables and stuff */
841 LEAVE_SCOPE (0);
842 assert (PL_tmps_floor == -1);
843
844 /* free all temporaries */
845 FREETMPS;
846 assert (PL_tmps_ix == -1);
847
848 /* unwind all extra stacks */
849 POPSTACK_TO (PL_mainstack);
850
851 /* unwind main stack */
852 dounwind (-1);
853 }
854
855 SvREFCNT_dec (GvSV (PL_defgv));
856 SvREFCNT_dec (GvAV (PL_defgv));
857 SvREFCNT_dec (GvSV (PL_errgv));
858 SvREFCNT_dec (PL_defoutgv);
859 SvREFCNT_dec (PL_rs);
860 SvREFCNT_dec (GvSV (irsgv));
861
862 SvREFCNT_dec (PL_diehook);
863 SvREFCNT_dec (PL_warnhook);
864
865 SvREFCNT_dec (coro->saved_deffh);
866 SvREFCNT_dec (coro->throw);
867
868 coro_destroy_stacks (aTHX);
869}
870
871static void
535free_coro_mortal () 872free_coro_mortal (pTHX)
536{ 873{
537 if (coro_mortal) 874 if (expect_true (coro_mortal))
538 { 875 {
539 SvREFCNT_dec (coro_mortal); 876 SvREFCNT_dec (coro_mortal);
540 coro_mortal = 0; 877 coro_mortal = 0;
541 } 878 }
542} 879}
543 880
881static int
882runops_trace (pTHX)
883{
884 COP *oldcop = 0;
885 int oldcxix = -2;
886 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
887 coro_cctx *cctx = coro->cctx;
888
889 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
890 {
891 PERL_ASYNC_CHECK ();
892
893 if (cctx->flags & CC_TRACE_ALL)
894 {
895 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
896 {
897 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
898 SV **bot, **top;
899 AV *av = newAV (); /* return values */
900 SV **cb;
901 dSP;
902
903 GV *gv = CvGV (cx->blk_sub.cv);
904 SV *fullname = sv_2mortal (newSV (0));
905 if (isGV (gv))
906 gv_efullname3 (fullname, gv, 0);
907
908 bot = PL_stack_base + cx->blk_oldsp + 1;
909 top = cx->blk_gimme == G_ARRAY ? SP + 1
910 : cx->blk_gimme == G_SCALAR ? bot + 1
911 : bot;
912
913 av_extend (av, top - bot);
914 while (bot < top)
915 av_push (av, SvREFCNT_inc (*bot++));
916
917 PL_runops = RUNOPS_DEFAULT;
918 ENTER;
919 SAVETMPS;
920 EXTEND (SP, 3);
921 PUSHMARK (SP);
922 PUSHs (&PL_sv_no);
923 PUSHs (fullname);
924 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
925 PUTBACK;
926 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
927 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
928 SPAGAIN;
929 FREETMPS;
930 LEAVE;
931 PL_runops = runops_trace;
932 }
933
934 if (oldcop != PL_curcop)
935 {
936 oldcop = PL_curcop;
937
938 if (PL_curcop != &PL_compiling)
939 {
940 SV **cb;
941
942 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
943 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945
946 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
947 {
948 runops_proc_t old_runops = PL_runops;
949 dSP;
950 GV *gv = CvGV (cx->blk_sub.cv);
951 SV *fullname = sv_2mortal (newSV (0));
952
953 if (isGV (gv))
954 gv_efullname3 (fullname, gv, 0);
955
956 PL_runops = RUNOPS_DEFAULT;
957 ENTER;
958 SAVETMPS;
959 EXTEND (SP, 3);
960 PUSHMARK (SP);
961 PUSHs (&PL_sv_yes);
962 PUSHs (fullname);
963 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
964 PUTBACK;
965 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
966 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
967 SPAGAIN;
968 FREETMPS;
969 LEAVE;
970 PL_runops = runops_trace;
971 }
972
973 oldcxix = cxstack_ix;
974 }
975
976 if (cctx->flags & CC_TRACE_LINE)
977 {
978 dSP;
979
980 PL_runops = RUNOPS_DEFAULT;
981 ENTER;
982 SAVETMPS;
983 EXTEND (SP, 3);
984 PL_runops = RUNOPS_DEFAULT;
985 PUSHMARK (SP);
986 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
987 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
988 PUTBACK;
989 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
990 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
991 SPAGAIN;
992 FREETMPS;
993 LEAVE;
994 PL_runops = runops_trace;
995 }
996 }
997 }
998 }
999 }
1000
1001 TAINT_NOT;
1002 return 0;
1003}
1004
544/* inject a fake call to Coro::State::_cctx_init into the execution */ 1005/* inject a fake call to Coro::State::_cctx_init into the execution */
1006/* _cctx_init should be careful, as it could be called at almost any time */
1007/* during execution of a perl program */
545static void NOINLINE 1008static void NOINLINE
546prepare_cctx (coro_cctx *cctx) 1009cctx_prepare (pTHX_ coro_cctx *cctx)
547{ 1010{
548 dSP; 1011 dSP;
549 LOGOP myop; 1012 LOGOP myop;
1013
1014 PL_top_env = &PL_start_env;
1015
1016 if (cctx->flags & CC_TRACE)
1017 PL_runops = runops_trace;
550 1018
551 Zero (&myop, 1, LOGOP); 1019 Zero (&myop, 1, LOGOP);
552 myop.op_next = PL_op; 1020 myop.op_next = PL_op;
553 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1021 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
554 1022
… …
560 PL_op = (OP *)&myop; 1028 PL_op = (OP *)&myop;
561 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1029 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
562 SPAGAIN; 1030 SPAGAIN;
563} 1031}
564 1032
1033/*
1034 * this is a _very_ stripped down perl interpreter ;)
1035 */
565static void 1036static void
566coro_run (void *arg) 1037cctx_run (void *arg)
567{ 1038{
1039 dTHX;
1040
568 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1041 /* cctx_run is the alternative tail of transfer(), so unlock here. */
569 UNLOCK; 1042 UNLOCK;
570 1043
571 /* 1044 /* we now skip the entersub that lead to transfer() */
572 * this is a _very_ stripped down perl interpreter ;) 1045 PL_op = PL_op->op_next;
573 */
574 PL_top_env = &PL_start_env;
575 1046
576 /* inject call to cctx_init */ 1047 /* inject a fake subroutine call to cctx_init */
577 prepare_cctx ((coro_cctx *)arg); 1048 cctx_prepare (aTHX_ (coro_cctx *)arg);
578 1049
579 /* somebody will hit me for both perl_run and PL_restartop */ 1050 /* somebody or something will hit me for both perl_run and PL_restartop */
580 PL_restartop = PL_op; 1051 PL_restartop = PL_op;
581 perl_run (PL_curinterp); 1052 perl_run (PL_curinterp);
582 1053
583 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1054 /*
584 abort (); 1055 * If perl-run returns we assume exit() was being called or the coro
1056 * fell off the end, which seems to be the only valid (non-bug)
1057 * reason for perl_run to return. We try to exit by jumping to the
1058 * bootstrap-time "top" top_env, as we cannot restore the "main"
1059 * coroutine as Coro has no such concept
1060 */
1061 PL_top_env = main_top_env;
1062 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
585} 1063}
586 1064
587static coro_cctx * 1065static coro_cctx *
588cctx_new () 1066cctx_new ()
589{ 1067{
590 coro_cctx *cctx; 1068 coro_cctx *cctx;
1069 void *stack_start;
1070 size_t stack_size;
591 1071
592 ++cctx_count; 1072 ++cctx_count;
593 1073
594 Newz (0, cctx, 1, coro_cctx); 1074 Newz (0, cctx, 1, coro_cctx);
595 1075
596#if HAVE_MMAP 1076#if HAVE_MMAP
597
598 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1077 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
599 /* mmap supposedly does allocate-on-write for us */ 1078 /* mmap supposedly does allocate-on-write for us */
600 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1079 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
601 1080
602 if (cctx->sptr == (void *)-1) 1081 if (cctx->sptr != (void *)-1)
603 {
604 perror ("FATAL: unable to mmap stack for coroutine");
605 _exit (EXIT_FAILURE);
606 } 1082 {
607
608# if STACKGUARD 1083# if CORO_STACKGUARD
609 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1084 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
610# endif 1085# endif
1086 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
1087 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1088 cctx->flags |= CC_MAPPED;
1089 }
1090 else
1091#endif
1092 {
1093 cctx->ssize = coro_stacksize * (long)sizeof (long);
1094 New (0, cctx->sptr, coro_stacksize, long);
611 1095
612#else
613
614 cctx->ssize = STACKSIZE * (long)sizeof (long);
615 New (0, cctx->sptr, STACKSIZE, long);
616
617 if (!cctx->sptr) 1096 if (!cctx->sptr)
618 { 1097 {
619 perror ("FATAL: unable to malloc stack for coroutine"); 1098 perror ("FATAL: unable to allocate stack for coroutine");
620 _exit (EXIT_FAILURE); 1099 _exit (EXIT_FAILURE);
621 } 1100 }
622 1101
623#endif 1102 stack_start = cctx->sptr;
1103 stack_size = cctx->ssize;
1104 }
624 1105
625#if USE_VALGRIND 1106 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
626 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1107 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
627 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
628 cctx->ssize + (char *)cctx->sptr
629 );
630#endif
631
632 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
633 1108
634 return cctx; 1109 return cctx;
635} 1110}
636 1111
637static void 1112static void
… …
640 if (!cctx) 1115 if (!cctx)
641 return; 1116 return;
642 1117
643 --cctx_count; 1118 --cctx_count;
644 1119
645#if USE_VALGRIND 1120#if CORO_USE_VALGRIND
646 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1121 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
647#endif 1122#endif
648 1123
649#if HAVE_MMAP 1124#if HAVE_MMAP
1125 if (cctx->flags & CC_MAPPED)
650 munmap (cctx->sptr, cctx->ssize); 1126 munmap (cctx->sptr, cctx->ssize);
651#else 1127 else
1128#endif
652 Safefree (cctx->sptr); 1129 Safefree (cctx->sptr);
653#endif
654 1130
655 Safefree (cctx); 1131 Safefree (cctx);
656} 1132}
657 1133
1134/* wether this cctx should be destructed */
1135#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1136
658static coro_cctx * 1137static coro_cctx *
659cctx_get () 1138cctx_get (pTHX)
660{ 1139{
661 coro_cctx *cctx; 1140 while (expect_true (cctx_first))
662
663 if (cctx_first)
664 { 1141 {
665 cctx = cctx_first; 1142 coro_cctx *cctx = cctx_first;
666 cctx_first = cctx->next; 1143 cctx_first = cctx->next;
667 --cctx_idle; 1144 --cctx_idle;
668 } 1145
669 else 1146 if (expect_true (!CCTX_EXPIRED (cctx)))
670 { 1147 return cctx;
671 cctx = cctx_new (); 1148
672 PL_op = PL_op->op_next; 1149 cctx_destroy (cctx);
673 } 1150 }
674 1151
675 return cctx; 1152 return cctx_new ();
676} 1153}
677 1154
678static void 1155static void
679cctx_put (coro_cctx *cctx) 1156cctx_put (coro_cctx *cctx)
680{ 1157{
681 /* free another cctx if overlimit */ 1158 /* free another cctx if overlimit */
682 if (cctx_idle >= MAX_IDLE_CCTX) 1159 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
683 { 1160 {
684 coro_cctx *first = cctx_first; 1161 coro_cctx *first = cctx_first;
685 cctx_first = first->next; 1162 cctx_first = first->next;
686 --cctx_idle; 1163 --cctx_idle;
687 1164
688 assert (!first->inuse);
689 cctx_destroy (first); 1165 cctx_destroy (first);
690 } 1166 }
691 1167
692 ++cctx_idle; 1168 ++cctx_idle;
693 cctx->next = cctx_first; 1169 cctx->next = cctx_first;
694 cctx_first = cctx; 1170 cctx_first = cctx;
695} 1171}
696 1172
697/* never call directly, always through the coro_state_transfer global variable */ 1173/** coroutine switching *****************************************************/
1174
1175static void
1176transfer_check (pTHX_ struct coro *prev, struct coro *next)
1177{
1178 if (expect_true (prev != next))
1179 {
1180 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1181 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1182
1183 if (expect_false (next->flags & CF_RUNNING))
1184 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1185
1186 if (expect_false (next->flags & CF_DESTROYED))
1187 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1188
1189#if !PERL_VERSION_ATLEAST (5,10,0)
1190 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1191 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1192#endif
1193 }
1194}
1195
1196/* always use the TRANSFER macro */
698static void NOINLINE 1197static void NOINLINE
699transfer (struct coro *prev, struct coro *next) 1198transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
700{ 1199{
701 dSTACKLEVEL; 1200 dSTACKLEVEL;
1201 static volatile int has_throw;
702 1202
703 /* sometimes transfer is only called to set idle_sp */ 1203 /* sometimes transfer is only called to set idle_sp */
704 if (!next) 1204 if (expect_false (!next))
705 { 1205 {
706 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1206 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
707 assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */ 1207 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
708 } 1208 }
709 else if (prev != next) 1209 else if (expect_true (prev != next))
710 { 1210 {
711 coro_cctx *prev__cctx; 1211 coro_cctx *prev__cctx;
712 1212
713 if (prev->flags & CF_NEW) 1213 if (expect_false (prev->flags & CF_NEW))
714 { 1214 {
715 /* create a new empty context */ 1215 /* create a new empty context */
716 Newz (0, prev->cctx, 1, coro_cctx); 1216 Newz (0, prev->cctx, 1, coro_cctx);
717 prev->cctx->inuse = 1;
718 prev->flags &= ~CF_NEW; 1217 prev->flags &= ~CF_NEW;
719 prev->flags |= CF_RUNNING; 1218 prev->flags |= CF_RUNNING;
720 } 1219 }
721 1220
722 /*TODO: must not croak here */
723 if (!prev->flags & CF_RUNNING)
724 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
725
726 if (next->flags & CF_RUNNING)
727 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
728
729 prev->flags &= ~CF_RUNNING; 1221 prev->flags &= ~CF_RUNNING;
730 next->flags |= CF_RUNNING; 1222 next->flags |= CF_RUNNING;
731 1223
732 LOCK; 1224 LOCK;
733 1225
1226 /* first get rid of the old state */
1227 save_perl (aTHX_ prev);
1228
734 if (next->flags & CF_NEW) 1229 if (expect_false (next->flags & CF_NEW))
735 { 1230 {
736 /* need to start coroutine */ 1231 /* need to start coroutine */
737 next->flags &= ~CF_NEW; 1232 next->flags &= ~CF_NEW;
738 /* first get rid of the old state */
739 save_perl (prev);
740 /* setup coroutine call */ 1233 /* setup coroutine call */
741 setup_coro (next); 1234 coro_setup (aTHX_ next);
742 /* need a new stack */
743 assert (!next->cctx);
744 } 1235 }
745 else 1236 else
746 {
747 /* coroutine already started */
748 save_perl (prev);
749 load_perl (next); 1237 load_perl (aTHX_ next);
750 }
751 1238
752 prev__cctx = prev->cctx; 1239 prev__cctx = prev->cctx;
753 1240
754 /* possibly "free" the cctx */ 1241 /* possibly "free" the cctx */
1242 if (expect_true (
755 if (prev__cctx->idle_sp == STACKLEVEL) 1243 prev__cctx->idle_sp == STACKLEVEL
1244 && !(prev__cctx->flags & CC_TRACE)
1245 && !force_cctx
1246 ))
756 { 1247 {
757 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1248 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
758 assert (PL_top_env == prev__cctx->top_env); 1249 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
759 1250
760 prev->cctx = 0; 1251 prev->cctx = 0;
761 1252
1253 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1254 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1255 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1256 if (!next->cctx)
1257 next->cctx = cctx_get (aTHX);
1258
762 cctx_put (prev__cctx); 1259 cctx_put (prev__cctx);
763 prev__cctx->inuse = 0;
764 } 1260 }
765 1261
1262 ++next->usecount;
1263
766 if (!next->cctx) 1264 if (expect_true (!next->cctx))
767 {
768 next->cctx = cctx_get (); 1265 next->cctx = cctx_get (aTHX);
769 assert (!next->cctx->inuse);
770 next->cctx->inuse = 1;
771 }
772 1266
1267 has_throw = !!next->throw;
1268
773 if (prev__cctx != next->cctx) 1269 if (expect_false (prev__cctx != next->cctx))
774 { 1270 {
775 prev__cctx->top_env = PL_top_env; 1271 prev__cctx->top_env = PL_top_env;
776 PL_top_env = next->cctx->top_env; 1272 PL_top_env = next->cctx->top_env;
777 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1273 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
778 } 1274 }
779 1275
780 free_coro_mortal (); 1276 free_coro_mortal (aTHX);
781
782 UNLOCK; 1277 UNLOCK;
1278
1279 if (expect_false (has_throw))
1280 {
1281 struct coro *coro = SvSTATE (coro_current);
1282
1283 if (coro->throw)
1284 {
1285 SV *exception = coro->throw;
1286 coro->throw = 0;
1287 sv_setsv (ERRSV, exception);
1288 croak (0);
1289 }
1290 }
783 } 1291 }
784} 1292}
785 1293
786struct transfer_args 1294struct transfer_args
787{ 1295{
788 struct coro *prev, *next; 1296 struct coro *prev, *next;
789}; 1297};
790 1298
1299#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
791#define TRANSFER(ta) transfer ((ta).prev, (ta).next) 1300#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
792 1301
1302/** high level stuff ********************************************************/
1303
793static void 1304static int
794coro_state_destroy (struct coro *coro) 1305coro_state_destroy (pTHX_ struct coro *coro)
795{ 1306{
796 if (coro->refcnt--) 1307 if (coro->flags & CF_DESTROYED)
797 return; 1308 return 0;
1309
1310 coro->flags |= CF_DESTROYED;
1311
1312 if (coro->flags & CF_READY)
1313 {
1314 /* reduce nready, as destroying a ready coro effectively unreadies it */
1315 /* alternative: look through all ready queues and remove the coro */
1316 LOCK;
1317 --coro_nready;
1318 UNLOCK;
1319 }
1320 else
1321 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
798 1322
799 if (coro->mainstack && coro->mainstack != main_mainstack) 1323 if (coro->mainstack && coro->mainstack != main_mainstack)
800 { 1324 {
801 struct coro temp; 1325 struct coro temp;
802 Zero (&temp, 1, struct coro);
803 temp.save = CORO_SAVE_ALL;
804 1326
805 if (coro->flags & CF_RUNNING) 1327 if (coro->flags & CF_RUNNING)
806 croak ("FATAL: tried to destroy currently running coroutine"); 1328 croak ("FATAL: tried to destroy currently running coroutine");
807 1329
808 save_perl (&temp); 1330 save_perl (aTHX_ &temp);
809 load_perl (coro); 1331 load_perl (aTHX_ coro);
810 1332
811 coro_destroy_stacks (); 1333 coro_destroy (aTHX_ coro);
812 1334
813 load_perl (&temp); /* this will get rid of defsv etc.. */ 1335 load_perl (aTHX_ &temp);
814 1336
815 coro->mainstack = 0; 1337 coro->slot = 0;
816 } 1338 }
817 1339
818 cctx_destroy (coro->cctx); 1340 cctx_destroy (coro->cctx);
819 SvREFCNT_dec (coro->args); 1341 SvREFCNT_dec (coro->args);
820 Safefree (coro); 1342
1343 if (coro->next) coro->next->prev = coro->prev;
1344 if (coro->prev) coro->prev->next = coro->next;
1345 if (coro == coro_first) coro_first = coro->next;
1346
1347 return 1;
821} 1348}
822 1349
823static int 1350static int
824coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1351coro_state_free (pTHX_ SV *sv, MAGIC *mg)
825{ 1352{
826 struct coro *coro = (struct coro *)mg->mg_ptr; 1353 struct coro *coro = (struct coro *)mg->mg_ptr;
827 mg->mg_ptr = 0; 1354 mg->mg_ptr = 0;
828 1355
1356 coro->hv = 0;
1357
1358 if (--coro->refcnt < 0)
1359 {
829 coro_state_destroy (coro); 1360 coro_state_destroy (aTHX_ coro);
1361 Safefree (coro);
1362 }
830 1363
831 return 0; 1364 return 0;
832} 1365}
833 1366
834static int 1367static int
… …
841 return 0; 1374 return 0;
842} 1375}
843 1376
844static MGVTBL coro_state_vtbl = { 1377static MGVTBL coro_state_vtbl = {
845 0, 0, 0, 0, 1378 0, 0, 0, 0,
846 coro_state_clear, 1379 coro_state_free,
847 0, 1380 0,
848#ifdef MGf_DUP 1381#ifdef MGf_DUP
849 coro_state_dup, 1382 coro_state_dup,
850#else 1383#else
851# define MGf_DUP 0 1384# define MGf_DUP 0
852#endif 1385#endif
853}; 1386};
854 1387
855static struct coro *
856SvSTATE (SV *coro)
857{
858 HV *stash;
859 MAGIC *mg;
860
861 if (SvROK (coro))
862 coro = SvRV (coro);
863
864 stash = SvSTASH (coro);
865 if (stash != coro_stash && stash != coro_state_stash)
866 {
867 /* very slow, but rare, check */
868 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
869 croak ("Coro::State object required");
870 }
871
872 mg = SvMAGIC (coro);
873 assert (mg->mg_type == PERL_MAGIC_ext);
874 return (struct coro *)mg->mg_ptr;
875}
876
877static void 1388static void
878prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1389prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
879{ 1390{
880 ta->prev = SvSTATE (prev_sv); 1391 ta->prev = SvSTATE (prev_sv);
881 ta->next = SvSTATE (next_sv); 1392 ta->next = SvSTATE (next_sv);
1393 TRANSFER_CHECK (*ta);
882} 1394}
883 1395
884static void 1396static void
885api_transfer (SV *prev_sv, SV *next_sv) 1397api_transfer (SV *prev_sv, SV *next_sv)
886{ 1398{
1399 dTHX;
887 struct transfer_args ta; 1400 struct transfer_args ta;
888 1401
889 prepare_transfer (&ta, prev_sv, next_sv); 1402 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
890 TRANSFER (ta); 1403 TRANSFER (ta, 1);
891}
892
893static int
894api_save (SV *coro_sv, int new_save)
895{
896 struct coro *coro = SvSTATE (coro_sv);
897 int old_save = coro->save;
898
899 if (new_save >= 0)
900 coro->save = new_save;
901
902 return old_save;
903} 1404}
904 1405
905/** Coro ********************************************************************/ 1406/** Coro ********************************************************************/
906 1407
907#define PRIO_MAX 3
908#define PRIO_HIGH 1
909#define PRIO_NORMAL 0
910#define PRIO_LOW -1
911#define PRIO_IDLE -3
912#define PRIO_MIN -4
913
914/* for Coro.pm */
915static SV *coro_current;
916static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
917static int coro_nready;
918
919static void 1408static void
920coro_enq (SV *coro_sv) 1409coro_enq (pTHX_ SV *coro_sv)
921{ 1410{
922 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1411 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
923 coro_nready++;
924} 1412}
925 1413
926static SV * 1414static SV *
927coro_deq (int min_prio) 1415coro_deq (pTHX)
928{ 1416{
929 int prio = PRIO_MAX - PRIO_MIN; 1417 int prio;
930 1418
931 min_prio -= PRIO_MIN;
932 if (min_prio < 0)
933 min_prio = 0;
934
935 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1419 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
936 if (AvFILLp (coro_ready [prio]) >= 0) 1420 if (AvFILLp (coro_ready [prio]) >= 0)
937 {
938 coro_nready--;
939 return av_shift (coro_ready [prio]); 1421 return av_shift (coro_ready [prio]);
940 }
941 1422
942 return 0; 1423 return 0;
943} 1424}
944 1425
945static int 1426static int
946api_ready (SV *coro_sv) 1427api_ready (SV *coro_sv)
947{ 1428{
1429 dTHX;
948 struct coro *coro; 1430 struct coro *coro;
1431 SV *sv_hook;
1432 void (*xs_hook)(void);
949 1433
950 if (SvROK (coro_sv)) 1434 if (SvROK (coro_sv))
951 coro_sv = SvRV (coro_sv); 1435 coro_sv = SvRV (coro_sv);
952 1436
953 coro = SvSTATE (coro_sv); 1437 coro = SvSTATE (coro_sv);
954 1438
955 if (coro->flags & CF_READY) 1439 if (coro->flags & CF_READY)
956 return 0; 1440 return 0;
957 1441
958#if 0 /* this is actually harmless */
959 if (coro->flags & CF_RUNNING)
960 croak ("Coro::ready called on currently running coroutine");
961#endif
962
963 coro->flags |= CF_READY; 1442 coro->flags |= CF_READY;
964 1443
965 LOCK; 1444 LOCK;
1445
1446 sv_hook = coro_nready ? 0 : coro_readyhook;
1447 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1448
966 coro_enq (SvREFCNT_inc (coro_sv)); 1449 coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1450 ++coro_nready;
1451
967 UNLOCK; 1452 UNLOCK;
1453
1454 if (sv_hook)
1455 {
1456 dSP;
1457
1458 ENTER;
1459 SAVETMPS;
1460
1461 PUSHMARK (SP);
1462 PUTBACK;
1463 call_sv (sv_hook, G_DISCARD);
1464 SPAGAIN;
1465
1466 FREETMPS;
1467 LEAVE;
1468 }
1469
1470 if (xs_hook)
1471 xs_hook ();
968 1472
969 return 1; 1473 return 1;
970} 1474}
971 1475
972static int 1476static int
973api_is_ready (SV *coro_sv) 1477api_is_ready (SV *coro_sv)
974{ 1478{
1479 dTHX;
975 return !!SvSTATE (coro_sv)->flags & CF_READY; 1480 return !!(SvSTATE (coro_sv)->flags & CF_READY);
976} 1481}
977 1482
978static void 1483static void
979prepare_schedule (struct transfer_args *ta) 1484prepare_schedule (pTHX_ struct transfer_args *ta)
980{ 1485{
981 SV *prev, *next; 1486 SV *prev_sv, *next_sv;
982 1487
983 for (;;) 1488 for (;;)
984 { 1489 {
985 LOCK; 1490 LOCK;
986 next = coro_deq (PRIO_MIN); 1491 next_sv = coro_deq (aTHX);
1492
1493 /* nothing to schedule: call the idle handler */
1494 if (expect_false (!next_sv))
1495 {
1496 dSP;
1497 UNLOCK;
1498
1499 ENTER;
1500 SAVETMPS;
1501
1502 PUSHMARK (SP);
1503 PUTBACK;
1504 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1505 SPAGAIN;
1506
1507 FREETMPS;
1508 LEAVE;
1509 continue;
1510 }
1511
1512 ta->next = SvSTATE (next_sv);
1513
1514 /* cannot transfer to destroyed coros, skip and look for next */
1515 if (expect_false (ta->next->flags & CF_DESTROYED))
1516 {
1517 UNLOCK;
1518 SvREFCNT_dec (next_sv);
1519 /* coro_nready is already taken care of by destroy */
1520 continue;
1521 }
1522
1523 --coro_nready;
987 UNLOCK; 1524 UNLOCK;
988
989 if (next)
990 break; 1525 break;
991
992 {
993 dSP;
994
995 ENTER;
996 SAVETMPS;
997
998 PUSHMARK (SP);
999 PUTBACK;
1000 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1001
1002 FREETMPS;
1003 LEAVE;
1004 } 1526 }
1005 }
1006
1007 prev = SvRV (coro_current);
1008 SvRV_set (coro_current, next);
1009 1527
1010 /* free this only after the transfer */ 1528 /* free this only after the transfer */
1011 LOCK; 1529 prev_sv = SvRV (coro_current);
1012 free_coro_mortal ();
1013 UNLOCK;
1014 coro_mortal = prev;
1015
1016 assert (!SvROK(prev));//D
1017 assert (!SvROK(next));//D
1018
1019 ta->prev = SvSTATE (prev); 1530 ta->prev = SvSTATE (prev_sv);
1020 ta->next = SvSTATE (next); 1531 TRANSFER_CHECK (*ta);
1021
1022 assert (ta->next->flags & CF_READY); 1532 assert (ta->next->flags & CF_READY);
1023 ta->next->flags &= ~CF_READY; 1533 ta->next->flags &= ~CF_READY;
1534 SvRV_set (coro_current, next_sv);
1535
1536 LOCK;
1537 free_coro_mortal (aTHX);
1538 coro_mortal = prev_sv;
1539 UNLOCK;
1024} 1540}
1025 1541
1026static void 1542static void
1027prepare_cede (struct transfer_args *ta) 1543prepare_cede (pTHX_ struct transfer_args *ta)
1028{ 1544{
1029 api_ready (coro_current); 1545 api_ready (coro_current);
1030
1031 prepare_schedule (ta); 1546 prepare_schedule (aTHX_ ta);
1547}
1548
1549static int
1550prepare_cede_notself (pTHX_ struct transfer_args *ta)
1551{
1552 if (coro_nready)
1553 {
1554 SV *prev = SvRV (coro_current);
1555 prepare_schedule (aTHX_ ta);
1556 api_ready (prev);
1557 return 1;
1558 }
1559 else
1560 return 0;
1032} 1561}
1033 1562
1034static void 1563static void
1035api_schedule (void) 1564api_schedule (void)
1036{ 1565{
1566 dTHX;
1037 struct transfer_args ta; 1567 struct transfer_args ta;
1038 1568
1039 prepare_schedule (&ta); 1569 prepare_schedule (aTHX_ &ta);
1040 TRANSFER (ta); 1570 TRANSFER (ta, 1);
1571}
1572
1573static int
1574api_cede (void)
1575{
1576 dTHX;
1577 struct transfer_args ta;
1578
1579 prepare_cede (aTHX_ &ta);
1580
1581 if (expect_true (ta.prev != ta.next))
1582 {
1583 TRANSFER (ta, 1);
1584 return 1;
1585 }
1586 else
1587 return 0;
1588}
1589
1590static int
1591api_cede_notself (void)
1592{
1593 dTHX;
1594 struct transfer_args ta;
1595
1596 if (prepare_cede_notself (aTHX_ &ta))
1597 {
1598 TRANSFER (ta, 1);
1599 return 1;
1600 }
1601 else
1602 return 0;
1041} 1603}
1042 1604
1043static void 1605static void
1044api_cede (void) 1606api_trace (SV *coro_sv, int flags)
1045{ 1607{
1046 struct transfer_args ta; 1608 dTHX;
1609 struct coro *coro = SvSTATE (coro_sv);
1047 1610
1048 prepare_cede (&ta); 1611 if (flags & CC_TRACE)
1049 TRANSFER (ta); 1612 {
1050} 1613 if (!coro->cctx)
1614 coro->cctx = cctx_new ();
1615 else if (!(coro->cctx->flags & CC_TRACE))
1616 croak ("cannot enable tracing on coroutine with custom stack");
1051 1617
1618 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1619 }
1620 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1621 {
1622 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1623
1624 if (coro->flags & CF_RUNNING)
1625 PL_runops = RUNOPS_DEFAULT;
1626 else
1627 coro->slot->runops = RUNOPS_DEFAULT;
1628 }
1629}
1630
1631static int
1632coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1633{
1634 AV *padlist;
1635 AV *av = (AV *)mg->mg_obj;
1636
1637 abort ();
1638
1639 return 0;
1640}
1641
1642static MGVTBL coro_gensub_vtbl = {
1643 0, 0, 0, 0,
1644 coro_gensub_free
1645};
1646
1052MODULE = Coro::State PACKAGE = Coro::State 1647MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1053 1648
1054PROTOTYPES: DISABLE 1649PROTOTYPES: DISABLE
1055 1650
1056BOOT: 1651BOOT:
1057{ 1652{
1058#ifdef USE_ITHREADS 1653#ifdef USE_ITHREADS
1059 MUTEX_INIT (&coro_mutex); 1654 MUTEX_INIT (&coro_mutex);
1060#endif 1655#endif
1061 BOOT_PAGESIZE; 1656 BOOT_PAGESIZE;
1062 1657
1658 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1659 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1660
1661 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1662 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1663 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1664
1665 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1666 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1667 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1668
1063 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1669 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1064 1670
1671 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1672 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1065 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1673 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1066 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1067 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1068 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1069 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1674 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1070 1675
1071 main_mainstack = PL_mainstack; 1676 main_mainstack = PL_mainstack;
1677 main_top_env = PL_top_env;
1072 1678
1679 while (main_top_env->je_prev)
1680 main_top_env = main_top_env->je_prev;
1681
1073 coroapi.ver = CORO_API_VERSION; 1682 coroapi.ver = CORO_API_VERSION;
1683 coroapi.rev = CORO_API_REVISION;
1074 coroapi.transfer = api_transfer; 1684 coroapi.transfer = api_transfer;
1075 1685
1076 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1686 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1077} 1687}
1078 1688
1079SV * 1689SV *
1080new (char *klass, ...) 1690new (char *klass, ...)
1081 CODE: 1691 CODE:
1082{ 1692{
1083 struct coro *coro; 1693 struct coro *coro;
1694 MAGIC *mg;
1084 HV *hv; 1695 HV *hv;
1085 int i; 1696 int i;
1086 1697
1087 Newz (0, coro, 1, struct coro); 1698 Newz (0, coro, 1, struct coro);
1088 coro->args = newAV (); 1699 coro->args = newAV ();
1089 coro->save = CORO_SAVE_ALL;
1090 coro->flags = CF_NEW; 1700 coro->flags = CF_NEW;
1091 1701
1702 if (coro_first) coro_first->prev = coro;
1703 coro->next = coro_first;
1704 coro_first = coro;
1705
1092 hv = newHV (); 1706 coro->hv = hv = newHV ();
1093 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1707 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1708 mg->mg_flags |= MGf_DUP;
1094 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1709 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1095 1710
1711 av_extend (coro->args, items - 1);
1096 for (i = 1; i < items; i++) 1712 for (i = 1; i < items; i++)
1097 av_push (coro->args, newSVsv (ST (i))); 1713 av_push (coro->args, newSVsv (ST (i)));
1098} 1714}
1099 OUTPUT: 1715 OUTPUT:
1100 RETVAL 1716 RETVAL
1101 1717
1102int 1718# these not obviously related functions are all rolled into the same xs
1103save (SV *coro, int new_save = -1) 1719# function to increase chances that they all will call transfer with the same
1104 CODE: 1720# stack offset
1105 RETVAL = api_save (coro, new_save);
1106 OUTPUT:
1107 RETVAL
1108
1109void 1721void
1110_set_stacklevel (...) 1722_set_stacklevel (...)
1111 ALIAS: 1723 ALIAS:
1112 Coro::State::transfer = 1 1724 Coro::State::transfer = 1
1113 Coro::schedule = 2 1725 Coro::schedule = 2
1114 Coro::cede = 3 1726 Coro::cede = 3
1727 Coro::cede_notself = 4
1115 CODE: 1728 CODE:
1116{ 1729{
1117 struct transfer_args ta; 1730 struct transfer_args ta;
1118 1731
1732 PUTBACK;
1119 switch (ix) 1733 switch (ix)
1120 { 1734 {
1121 case 0: 1735 case 0:
1122 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1736 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1123 ta.next = 0; 1737 ta.next = 0;
… …
1125 1739
1126 case 1: 1740 case 1:
1127 if (items != 2) 1741 if (items != 2)
1128 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); 1742 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1129 1743
1130 prepare_transfer (&ta, ST (0), ST (1)); 1744 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1131 break; 1745 break;
1132 1746
1133 case 2: 1747 case 2:
1134 prepare_schedule (&ta); 1748 prepare_schedule (aTHX_ &ta);
1135 break; 1749 break;
1136 1750
1137 case 3: 1751 case 3:
1138 prepare_cede (&ta); 1752 prepare_cede (aTHX_ &ta);
1753 break;
1754
1755 case 4:
1756 if (!prepare_cede_notself (aTHX_ &ta))
1757 XSRETURN_EMPTY;
1758
1139 break; 1759 break;
1140 } 1760 }
1761 SPAGAIN;
1141 1762
1763 BARRIER;
1764 PUTBACK;
1142 TRANSFER (ta); 1765 TRANSFER (ta, 0);
1766 SPAGAIN; /* might be the sp of a different coroutine now */
1767 /* be extra careful not to ever do anything after TRANSFER */
1143} 1768}
1769
1770bool
1771_destroy (SV *coro_sv)
1772 CODE:
1773 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1774 OUTPUT:
1775 RETVAL
1144 1776
1145void 1777void
1146_clone_state_from (SV *dst, SV *src)
1147 CODE:
1148{
1149 struct coro *coro_src = SvSTATE (src);
1150
1151 sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1152
1153 ++coro_src->refcnt;
1154 sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1155}
1156
1157void
1158_exit (code) 1778_exit (int code)
1159 int code
1160 PROTOTYPE: $ 1779 PROTOTYPE: $
1161 CODE: 1780 CODE:
1162 _exit (code); 1781 _exit (code);
1782
1783int
1784cctx_stacksize (int new_stacksize = 0)
1785 CODE:
1786 RETVAL = coro_stacksize;
1787 if (new_stacksize)
1788 coro_stacksize = new_stacksize;
1789 OUTPUT:
1790 RETVAL
1163 1791
1164int 1792int
1165cctx_count () 1793cctx_count ()
1166 CODE: 1794 CODE:
1167 RETVAL = cctx_count; 1795 RETVAL = cctx_count;
… …
1173 CODE: 1801 CODE:
1174 RETVAL = cctx_idle; 1802 RETVAL = cctx_idle;
1175 OUTPUT: 1803 OUTPUT:
1176 RETVAL 1804 RETVAL
1177 1805
1806void
1807list ()
1808 PPCODE:
1809{
1810 struct coro *coro;
1811 for (coro = coro_first; coro; coro = coro->next)
1812 if (coro->hv)
1813 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1814}
1815
1816void
1817call (Coro::State coro, SV *coderef)
1818 ALIAS:
1819 eval = 1
1820 CODE:
1821{
1822 if (coro->mainstack)
1823 {
1824 struct coro temp;
1825
1826 if (!(coro->flags & CF_RUNNING))
1827 {
1828 PUTBACK;
1829 save_perl (aTHX_ &temp);
1830 load_perl (aTHX_ coro);
1831 }
1832
1833 {
1834 dSP;
1835 ENTER;
1836 SAVETMPS;
1837 PUTBACK;
1838 PUSHSTACK;
1839 PUSHMARK (SP);
1840
1841 if (ix)
1842 eval_sv (coderef, 0);
1843 else
1844 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1845
1846 POPSTACK;
1847 SPAGAIN;
1848 FREETMPS;
1849 LEAVE;
1850 PUTBACK;
1851 }
1852
1853 if (!(coro->flags & CF_RUNNING))
1854 {
1855 save_perl (aTHX_ coro);
1856 load_perl (aTHX_ &temp);
1857 SPAGAIN;
1858 }
1859 }
1860}
1861
1862SV *
1863is_ready (Coro::State coro)
1864 PROTOTYPE: $
1865 ALIAS:
1866 is_ready = CF_READY
1867 is_running = CF_RUNNING
1868 is_new = CF_NEW
1869 is_destroyed = CF_DESTROYED
1870 CODE:
1871 RETVAL = boolSV (coro->flags & ix);
1872 OUTPUT:
1873 RETVAL
1874
1875void
1876api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1877
1878SV *
1879has_cctx (Coro::State coro)
1880 PROTOTYPE: $
1881 CODE:
1882 RETVAL = boolSV (!!coro->cctx);
1883 OUTPUT:
1884 RETVAL
1885
1886int
1887is_traced (Coro::State coro)
1888 PROTOTYPE: $
1889 CODE:
1890 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1891 OUTPUT:
1892 RETVAL
1893
1894IV
1895rss (Coro::State coro)
1896 PROTOTYPE: $
1897 ALIAS:
1898 usecount = 1
1899 CODE:
1900 switch (ix)
1901 {
1902 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1903 case 1: RETVAL = coro->usecount; break;
1904 }
1905 OUTPUT:
1906 RETVAL
1907
1908void
1909force_cctx ()
1910 CODE:
1911 struct coro *coro = SvSTATE (coro_current);
1912 coro->cctx->idle_sp = 0;
1913
1914void
1915throw (Coro::State self, SV *throw = &PL_sv_undef)
1916 PROTOTYPE: $;$
1917 CODE:
1918 SvREFCNT_dec (self->throw);
1919 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1920
1921void
1922swap_defsv (Coro::State self)
1923 PROTOTYPE: $
1924 ALIAS:
1925 swap_defav = 1
1926 CODE:
1927 if (!self->slot)
1928 croak ("cannot swap state with coroutine that has no saved state");
1929 else
1930 {
1931 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1932 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1933
1934 SV *tmp = *src; *src = *dst; *dst = tmp;
1935 }
1936
1178MODULE = Coro::State PACKAGE = Coro 1937MODULE = Coro::State PACKAGE = Coro
1179 1938
1180BOOT: 1939BOOT:
1181{ 1940{
1182 int i; 1941 int i;
1183 1942
1943 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1944 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1945 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1946
1947 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1948 SvREADONLY_on (coro_current);
1949
1184 coro_stash = gv_stashpv ("Coro", TRUE); 1950 coro_stash = gv_stashpv ("Coro", TRUE);
1185 1951
1186 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1952 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1187 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1953 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1188 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1954 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1189 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1955 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1190 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1956 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1191 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1957 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1192 1958
1193 coro_current = get_sv ("Coro::current", FALSE);
1194 SvREADONLY_on (coro_current);
1195
1196 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1959 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1197 coro_ready[i] = newAV (); 1960 coro_ready[i] = newAV ();
1198 1961
1199 { 1962 {
1200 SV *sv = perl_get_sv("Coro::API", 1); 1963 SV *sv = perl_get_sv ("Coro::API", TRUE);
1964 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1201 1965
1202 coroapi.schedule = api_schedule; 1966 coroapi.schedule = api_schedule;
1203 coroapi.save = api_save;
1204 coroapi.cede = api_cede; 1967 coroapi.cede = api_cede;
1968 coroapi.cede_notself = api_cede_notself;
1205 coroapi.ready = api_ready; 1969 coroapi.ready = api_ready;
1206 coroapi.is_ready = api_is_ready; 1970 coroapi.is_ready = api_is_ready;
1207 coroapi.nready = &coro_nready; 1971 coroapi.nready = &coro_nready;
1208 coroapi.current = coro_current; 1972 coroapi.current = coro_current;
1209 1973
1210 GCoroAPI = &coroapi; 1974 GCoroAPI = &coroapi;
1211 sv_setiv (sv, (IV)&coroapi); 1975 sv_setiv (sv, (IV)&coroapi);
1212 SvREADONLY_on (sv); 1976 SvREADONLY_on (sv);
1213 } 1977 }
… …
1218 PROTOTYPE: $ 1982 PROTOTYPE: $
1219 CODE: 1983 CODE:
1220 SvREFCNT_dec (SvRV (coro_current)); 1984 SvREFCNT_dec (SvRV (coro_current));
1221 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 1985 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1222 1986
1987void
1988_set_readyhook (SV *hook)
1989 PROTOTYPE: $
1990 CODE:
1991 LOCK;
1992 SvREFCNT_dec (coro_readyhook);
1993 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1994 UNLOCK;
1995
1223int 1996int
1224prio (Coro::State coro, int newprio = 0) 1997prio (Coro::State coro, int newprio = 0)
1225 ALIAS: 1998 ALIAS:
1226 nice = 1 1999 nice = 1
1227 CODE: 2000 CODE:
… …
1229 RETVAL = coro->prio; 2002 RETVAL = coro->prio;
1230 2003
1231 if (items > 1) 2004 if (items > 1)
1232 { 2005 {
1233 if (ix) 2006 if (ix)
1234 newprio += coro->prio; 2007 newprio = coro->prio - newprio;
1235 2008
1236 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 2009 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1237 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 2010 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1238 2011
1239 coro->prio = newprio; 2012 coro->prio = newprio;
1240 } 2013 }
1241} 2014}
2015 OUTPUT:
2016 RETVAL
1242 2017
1243SV * 2018SV *
1244ready (SV *self) 2019ready (SV *self)
1245 PROTOTYPE: $ 2020 PROTOTYPE: $
1246 CODE: 2021 CODE:
1247 RETVAL = boolSV (api_ready (self)); 2022 RETVAL = boolSV (api_ready (self));
1248 OUTPUT: 2023 OUTPUT:
1249 RETVAL 2024 RETVAL
1250 2025
1251SV *
1252is_ready (SV *self)
1253 PROTOTYPE: $
1254 CODE:
1255 RETVAL = boolSV (api_is_ready (self));
1256 OUTPUT:
1257 RETVAL
1258
1259int 2026int
1260nready (...) 2027nready (...)
1261 PROTOTYPE: 2028 PROTOTYPE:
1262 CODE: 2029 CODE:
1263 RETVAL = coro_nready; 2030 RETVAL = coro_nready;
1264 OUTPUT: 2031 OUTPUT:
1265 RETVAL 2032 RETVAL
1266 2033
2034# for async_pool speedup
2035void
2036_pool_1 (SV *cb)
2037 CODE:
2038{
2039 struct coro *coro = SvSTATE (coro_current);
2040 HV *hv = (HV *)SvRV (coro_current);
2041 AV *defav = GvAV (PL_defgv);
2042 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2043 AV *invoke_av;
2044 int i, len;
2045
2046 if (!invoke)
2047 {
2048 SV *old = PL_diehook;
2049 PL_diehook = 0;
2050 SvREFCNT_dec (old);
2051 croak ("\3async_pool terminate\2\n");
2052 }
2053
2054 SvREFCNT_dec (coro->saved_deffh);
2055 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
2056
2057 hv_store (hv, "desc", sizeof ("desc") - 1,
2058 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2059
2060 invoke_av = (AV *)SvRV (invoke);
2061 len = av_len (invoke_av);
2062
2063 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2064
2065 if (len > 0)
2066 {
2067 av_fill (defav, len - 1);
2068 for (i = 0; i < len; ++i)
2069 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
2070 }
2071
2072 SvREFCNT_dec (invoke);
2073}
2074
2075void
2076_pool_2 (SV *cb)
2077 CODE:
2078{
2079 struct coro *coro = SvSTATE (coro_current);
2080
2081 sv_setsv (cb, &PL_sv_undef);
2082
2083 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2084 coro->saved_deffh = 0;
2085
2086 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2087 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2088 {
2089 SV *old = PL_diehook;
2090 PL_diehook = 0;
2091 SvREFCNT_dec (old);
2092 croak ("\3async_pool terminate\2\n");
2093 }
2094
2095 av_clear (GvAV (PL_defgv));
2096 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2097 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2098
2099 coro->prio = 0;
2100
2101 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2102 api_trace (coro_current, 0);
2103
2104 av_push (av_async_pool, newSVsv (coro_current));
2105}
2106
2107#if 0
2108
2109void
2110_generator_call (...)
2111 PROTOTYPE: @
2112 PPCODE:
2113 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2114 xxxx
2115 abort ();
2116
2117SV *
2118gensub (SV *sub, ...)
2119 PROTOTYPE: &;@
2120 CODE:
2121{
2122 struct coro *coro;
2123 MAGIC *mg;
2124 CV *xcv;
2125 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2126 int i;
2127
2128 CvGV (ncv) = CvGV (cv);
2129 CvFILE (ncv) = CvFILE (cv);
2130
2131 Newz (0, coro, 1, struct coro);
2132 coro->args = newAV ();
2133 coro->flags = CF_NEW;
2134
2135 av_extend (coro->args, items - 1);
2136 for (i = 1; i < items; i++)
2137 av_push (coro->args, newSVsv (ST (i)));
2138
2139 CvISXSUB_on (ncv);
2140 CvXSUBANY (ncv).any_ptr = (void *)coro;
2141
2142 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2143
2144 CvXSUB (ncv) = CvXSUB (xcv);
2145 CvANON_on (ncv);
2146
2147 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2148 RETVAL = newRV_noinc ((SV *)ncv);
2149}
2150 OUTPUT:
2151 RETVAL
2152
2153#endif
2154
2155
1267MODULE = Coro::State PACKAGE = Coro::AIO 2156MODULE = Coro::State PACKAGE = Coro::AIO
1268 2157
1269SV * 2158SV *
1270_get_state () 2159_get_state ()
1271 CODE: 2160 CODE:
… …
1296 PL_laststype = data->laststype; 2185 PL_laststype = data->laststype;
1297 PL_laststatval = data->laststatval; 2186 PL_laststatval = data->laststatval;
1298 PL_statcache = data->statcache; 2187 PL_statcache = data->statcache;
1299} 2188}
1300 2189
2190
2191MODULE = Coro::State PACKAGE = Coro::AnyEvent
2192
2193BOOT:
2194 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2195
2196SV *
2197_schedule (...)
2198 PROTOTYPE: @
2199 CODE:
2200{
2201 static int incede;
2202
2203 api_cede_notself ();
2204
2205 ++incede;
2206 while (coro_nready >= incede && api_cede ())
2207 ;
2208
2209 sv_setsv (sv_activity, &PL_sv_undef);
2210 if (coro_nready >= incede)
2211 {
2212 PUSHMARK (SP);
2213 PUTBACK;
2214 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2215 SPAGAIN;
2216 }
2217
2218 --incede;
2219}
2220

Diff Legend

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