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Comparing Coro/Coro/State.xs (file contents):
Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC vs.
Revision 1.268 by root, Fri Nov 14 06:41:41 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
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 12
48#include <stdio.h> 13#include <stdio.h>
49#include <errno.h> 14#include <errno.h>
50#include <assert.h> 15#include <assert.h>
51 16
52#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 17#ifdef WIN32
53# undef STACKGUARD 18# undef setjmp
54#endif 19# undef longjmp
55 20# undef _exit
56#ifndef STACKGUARD 21# define setjmp _setjmp // deep magic, don't ask
57# define STACKGUARD 0 22#else
23# include <inttypes.h> /* most portable stdint.h */
58#endif 24#endif
59 25
60#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
61# include <unistd.h> 27# include <unistd.h>
62# include <sys/mman.h> 28# include <sys/mman.h>
… …
78#else 44#else
79# define PAGESIZE 0 45# define PAGESIZE 0
80# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
81#endif 47#endif
82 48
83/* The next macro should declare a variable stacklevel that contains and approximation 49#if CORO_USE_VALGRIND
84 * to the current C stack pointer. Its property is that it changes with each call 50# include <valgrind/valgrind.h>
85 * and should be unique. */ 51#endif
86#define dSTACKLEVEL int stacklevel 52
87#define STACKLEVEL ((void *)&stacklevel) 53/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4;
55
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD
108#endif
109
110#ifndef CORO_STACKGUARD
111# define CORO_STACKGUARD 0
112#endif
113
114/* prefer perl internal functions over our own? */
115#ifndef CORO_PREFER_PERL_FUNCTIONS
116# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif
118
119/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */
121#if __GNUC__ >= 4
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0)
123#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel
125#endif
88 126
89#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
90 128
91#if __GNUC__ >= 3 129#if __GNUC__ >= 3
92# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
93#else 133#else
94# define attribute(x) 134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
95#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
96 141
97#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
98 143
99#include "CoroAPI.h" 144#include "CoroAPI.h"
100 145
101#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
147
102static perl_mutex coro_mutex; 148static perl_mutex coro_lock;
103# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
104# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD
152static void *coro_thx;
153# endif
154
105#else 155#else
156
106# define LOCK (void)0 157# define LOCK (void)0
107# define UNLOCK (void)0 158# define UNLOCK (void)0
108#endif
109 159
160#endif
161
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
110struct io_state 168struct io_state
111{ 169{
170 AV *res;
112 int errorno; 171 int errorno;
113 I32 laststype; 172 I32 laststype; /* U16 in 5.10.0 */
114 int laststatval; 173 int laststatval;
115 Stat_t statcache; 174 Stat_t statcache;
116}; 175};
117 176
177static double (*nvtime)(); /* so why doesn't it take void? */
178
179static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE;
118static struct CoroAPI coroapi; 181static struct CoroAPI coroapi;
119static AV *main_mainstack; /* used to differentiate between $main and others */ 182static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env;
120static HV *coro_state_stash, *coro_stash; 184static HV *coro_state_stash, *coro_stash;
121static SV *coro_mortal; /* will be freed after next transfer */ 185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187
188struct transfer_args
189{
190 struct coro *prev, *next;
191};
192
193static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook;
196static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */
198
199/* async_pool helper stuff */
200static SV *sv_pool_rss;
201static SV *sv_pool_size;
202static AV *av_async_pool;
203
204/* Coro::AnyEvent */
205static SV *sv_activity;
122 206
123static struct coro_cctx *cctx_first; 207static struct coro_cctx *cctx_first;
124static int cctx_count, cctx_idle; 208static int cctx_count, cctx_idle;
209
210enum {
211 CC_MAPPED = 0x01,
212 CC_NOREUSE = 0x02, /* throw this away after tracing */
213 CC_TRACE = 0x04,
214 CC_TRACE_SUB = 0x08, /* trace sub calls */
215 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217};
125 218
126/* this is a structure representing a c-level coroutine */ 219/* this is a structure representing a c-level coroutine */
127typedef struct coro_cctx { 220typedef struct coro_cctx {
128 struct coro_cctx *next; 221 struct coro_cctx *next;
129 222
130 /* the stack */ 223 /* the stack */
131 void *sptr; 224 void *sptr;
132 long ssize; /* positive == mmap, otherwise malloc */ 225 size_t ssize;
133 226
134 /* cpu state */ 227 /* cpu state */
135 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 228 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
229 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
136 JMPENV *top_env; 230 JMPENV *top_env;
137 coro_context cctx; 231 coro_context cctx;
138 232
139 int inuse; 233 U32 gen;
140
141#if USE_VALGRIND 234#if CORO_USE_VALGRIND
142 int valgrind_id; 235 int valgrind_id;
143#endif 236#endif
237 unsigned char flags;
144} coro_cctx; 238} coro_cctx;
145 239
146enum { 240enum {
147 CF_RUNNING = 0x0001, /* coroutine is running */ 241 CF_RUNNING = 0x0001, /* coroutine is running */
148 CF_READY = 0x0002, /* coroutine is ready */ 242 CF_READY = 0x0002, /* coroutine is ready */
149 CF_NEW = 0x0004, /* ahs never been switched to */ 243 CF_NEW = 0x0004, /* has never been switched to */
244 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
150}; 245};
246
247/* the structure where most of the perl state is stored, overlaid on the cxstack */
248typedef struct {
249 SV *defsv;
250 AV *defav;
251 SV *errsv;
252 SV *irsgv;
253#define VAR(name,type) type name;
254# include "state.h"
255#undef VAR
256} perl_slots;
257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
151 259
152/* this is a structure representing a perl-level coroutine */ 260/* this is a structure representing a perl-level coroutine */
153struct coro { 261struct coro {
154 /* the c coroutine allocated to this perl coroutine, if any */ 262 /* the c coroutine allocated to this perl coroutine, if any */
155 coro_cctx *cctx; 263 coro_cctx *cctx;
156 264
265 /* process data */
266 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */
268
157 /* data associated with this coroutine (initial args) */ 269 AV *args; /* data associated with this coroutine (initial args) */
158 AV *args; 270 int refcnt; /* coroutines are refcounted, yes */
159 int refcnt;
160 int save; /* CORO_SAVE flags */
161 int flags; /* CF_ flags */ 271 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */
162 273
163 /* optionally saved, might be zero */ 274 /* statistics */
164 AV *defav; /* @_ */ 275 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
173 276
174 /* coro process data */ 277 /* coro process data */
175 int prio; 278 int prio;
279 SV *throw; /* exception to be thrown */
280
281 /* async_pool */
282 SV *saved_deffh;
283
284 /* linked list */
285 struct coro *next, *prev;
176}; 286};
177 287
178typedef struct coro *Coro__State; 288typedef struct coro *Coro__State;
179typedef struct coro *Coro__State_or_hashref; 289typedef struct coro *Coro__State_or_hashref;
180 290
291/** Coro ********************************************************************/
292
293#define PRIO_MAX 3
294#define PRIO_HIGH 1
295#define PRIO_NORMAL 0
296#define PRIO_LOW -1
297#define PRIO_IDLE -3
298#define PRIO_MIN -4
299
300/* for Coro.pm */
301static SV *coro_current;
302static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
304static int coro_nready;
305static struct coro *coro_first;
306
307/** lowlevel stuff **********************************************************/
308
309static SV *
310coro_get_sv (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_sv (name, create);
315#endif
316 return get_sv (name, create);
317}
318
181static AV * 319static AV *
320coro_get_av (pTHX_ const char *name, int create)
321{
322#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_av (name, create);
325#endif
326 return get_av (name, create);
327}
328
329static HV *
330coro_get_hv (pTHX_ const char *name, int create)
331{
332#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create);
335#endif
336 return get_hv (name, create);
337}
338
339static AV *
182coro_clone_padlist (CV *cv) 340coro_clone_padlist (pTHX_ CV *cv)
183{ 341{
184 AV *padlist = CvPADLIST (cv); 342 AV *padlist = CvPADLIST (cv);
185 AV *newpadlist, *newpad; 343 AV *newpadlist, *newpad;
186 344
187 newpadlist = newAV (); 345 newpadlist = newAV ();
188 AvREAL_off (newpadlist); 346 AvREAL_off (newpadlist);
189#if PERL_VERSION_ATLEAST (5,9,0) 347#if PERL_VERSION_ATLEAST (5,10,0)
190 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
191#else 349#else
192 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
193#endif 351#endif
194 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
195 --AvFILLp (padlist); 353 --AvFILLp (padlist);
196 354
197 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
198 av_store (newpadlist, 1, (SV *)newpad); 356 av_store (newpadlist, 1, (SV *)newpad);
199 357
200 return newpadlist; 358 return newpadlist;
201} 359}
202 360
203static void 361static void
204free_padlist (AV *padlist) 362free_padlist (pTHX_ AV *padlist)
205{ 363{
206 /* may be during global destruction */ 364 /* may be during global destruction */
207 if (SvREFCNT (padlist)) 365 if (SvREFCNT (padlist))
208 { 366 {
209 I32 i = AvFILLp (padlist); 367 I32 i = AvFILLp (padlist);
… …
230 AV *padlist; 388 AV *padlist;
231 AV *av = (AV *)mg->mg_obj; 389 AV *av = (AV *)mg->mg_obj;
232 390
233 /* casting is fun. */ 391 /* casting is fun. */
234 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
235 free_padlist (padlist); 393 free_padlist (aTHX_ padlist);
236 394
237 SvREFCNT_dec (av); 395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
238 396
239 return 0; 397 return 0;
240} 398}
241 399
242#define PERL_MAGIC_coro PERL_MAGIC_ext 400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
243 402
244static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 403static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0,
405 coro_cv_free
406};
245 407
246#define CORO_MAGIC(cv) \ 408#define CORO_MAGIC(sv, type) \
247 SvMAGIC (cv) \ 409 SvMAGIC (sv) \
248 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 410 ? SvMAGIC (sv)->mg_type == type \
249 ? SvMAGIC (cv) \ 411 ? SvMAGIC (sv) \
250 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 412 : mg_find (sv, type) \
251 : 0 413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
252 443
253/* the next two functions merely cache the padlists */ 444/* the next two functions merely cache the padlists */
254static void 445static void
255get_padlist (CV *cv) 446get_padlist (pTHX_ CV *cv)
256{ 447{
257 MAGIC *mg = CORO_MAGIC (cv); 448 MAGIC *mg = CORO_MAGIC_cv (cv);
258 AV *av; 449 AV *av;
259 450
260 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
261 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
262 else 453 else
263 { 454 {
264#if 0 455#if CORO_PREFER_PERL_FUNCTIONS
265 /* this is probably cleaner, but also slower? */ 456 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */
266 CV *cp = Perl_cv_clone (cv); 458 CV *cp = Perl_cv_clone (cv);
267 CvPADLIST (cv) = CvPADLIST (cp); 459 CvPADLIST (cv) = CvPADLIST (cp);
268 CvPADLIST (cp) = 0; 460 CvPADLIST (cp) = 0;
269 SvREFCNT_dec (cp); 461 SvREFCNT_dec (cp);
270#else 462#else
271 CvPADLIST (cv) = coro_clone_padlist (cv); 463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
272#endif 464#endif
273 } 465 }
274} 466}
275 467
276static void 468static void
277put_padlist (CV *cv) 469put_padlist (pTHX_ CV *cv)
278{ 470{
279 MAGIC *mg = CORO_MAGIC (cv); 471 MAGIC *mg = CORO_MAGIC_cv (cv);
280 AV *av; 472 AV *av;
281 473
282 if (!mg) 474 if (expect_false (!mg))
283 { 475 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 }
289 476
290 av = (AV *)mg->mg_obj; 477 av = (AV *)mg->mg_obj;
291 478
292 if (AvFILLp (av) >= AvMAX (av)) 479 if (expect_false (AvFILLp (av) >= AvMAX (av)))
293 av_extend (av, AvMAX (av) + 1); 480 av_extend (av, AvMAX (av) + 1);
294 481
295 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
296} 483}
297 484
298#define SB do { 485/** load & save, init *******************************************************/
299#define SE } while (0)
300
301#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
302 486
303static void 487static void
304load_perl (Coro__State c) 488load_perl (pTHX_ Coro__State c)
305{ 489{
490 perl_slots *slot = c->slot;
491 c->slot = 0;
492
493 PL_mainstack = c->mainstack;
494
495 GvSV (PL_defgv) = slot->defsv;
496 GvAV (PL_defgv) = slot->defav;
497 GvSV (PL_errgv) = slot->errsv;
498 GvSV (irsgv) = slot->irsgv;
499
306#define VAR(name,type) PL_ ## name = c->name; 500 #define VAR(name,type) PL_ ## name = slot->name;
307# include "state.h" 501 # include "state.h"
308#undef VAR 502 #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 }
324 503
325 { 504 {
326 dSP; 505 dSP;
506
327 CV *cv; 507 CV *cv;
328 508
329 /* now do the ugly restore mess */ 509 /* now do the ugly restore mess */
330 while ((cv = (CV *)POPs)) 510 while (expect_true (cv = (CV *)POPs))
331 { 511 {
332 put_padlist (cv); /* mark this padlist as available */ 512 put_padlist (aTHX_ cv); /* mark this padlist as available */
333 CvDEPTH (cv) = PTR2IV (POPs); 513 CvDEPTH (cv) = PTR2IV (POPs);
334 CvPADLIST (cv) = (AV *)POPs; 514 CvPADLIST (cv) = (AV *)POPs;
335 } 515 }
336 516
337 PUTBACK; 517 PUTBACK;
338 } 518 }
339} 519}
340 520
341static void 521static void
342save_perl (Coro__State c) 522save_perl (pTHX_ Coro__State c)
343{ 523{
344 { 524 {
345 dSP; 525 dSP;
346 I32 cxix = cxstack_ix; 526 I32 cxix = cxstack_ix;
347 PERL_CONTEXT *ccstk = cxstack; 527 PERL_CONTEXT *ccstk = cxstack;
… …
350 /* 530 /*
351 * the worst thing you can imagine happens first - we have to save 531 * the worst thing you can imagine happens first - we have to save
352 * (and reinitialize) all cv's in the whole callchain :( 532 * (and reinitialize) all cv's in the whole callchain :(
353 */ 533 */
354 534
355 PUSHs (Nullsv); 535 XPUSHs (Nullsv);
356 /* this loop was inspired by pp_caller */ 536 /* this loop was inspired by pp_caller */
357 for (;;) 537 for (;;)
358 { 538 {
359 while (cxix >= 0) 539 while (expect_true (cxix >= 0))
360 { 540 {
361 PERL_CONTEXT *cx = &ccstk[cxix--]; 541 PERL_CONTEXT *cx = &ccstk[cxix--];
362 542
363 if (CxTYPE (cx) == CXt_SUB) 543 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
364 { 544 {
365 CV *cv = cx->blk_sub.cv; 545 CV *cv = cx->blk_sub.cv;
366 546
367 if (CvDEPTH (cv)) 547 if (expect_true (CvDEPTH (cv)))
368 { 548 {
369 EXTEND (SP, 3); 549 EXTEND (SP, 3);
370
371 PUSHs ((SV *)CvPADLIST (cv)); 550 PUSHs ((SV *)CvPADLIST (cv));
372 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 551 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
373 PUSHs ((SV *)cv); 552 PUSHs ((SV *)cv);
374 553
375 CvDEPTH (cv) = 0; 554 CvDEPTH (cv) = 0;
376 get_padlist (cv); 555 get_padlist (aTHX_ cv);
377 } 556 }
378 } 557 }
379#ifdef CXt_FORMAT
380 else if (CxTYPE (cx) == CXt_FORMAT)
381 {
382 /* I never used formats, so how should I know how these are implemented? */
383 /* my bold guess is as a simple, plain sub... */
384 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
385 }
386#endif
387 } 558 }
388 559
389 if (top_si->si_type == PERLSI_MAIN) 560 if (expect_true (top_si->si_type == PERLSI_MAIN))
390 break; 561 break;
391 562
392 top_si = top_si->si_prev; 563 top_si = top_si->si_prev;
393 ccstk = top_si->si_cxstack; 564 ccstk = top_si->si_cxstack;
394 cxix = top_si->si_cxix; 565 cxix = top_si->si_cxix;
395 } 566 }
396 567
397 PUTBACK; 568 PUTBACK;
398 } 569 }
399 570
400 c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 571 /* allocate some space on the context stack for our purposes */
401 c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 572 /* we manually unroll here, as usually 2 slots is enough */
402 c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 573 if (SLOT_COUNT >= 1) CXINC;
403 c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; 574 if (SLOT_COUNT >= 2) CXINC;
575 if (SLOT_COUNT >= 3) CXINC;
576 {
577 int i;
578 for (i = 3; i < SLOT_COUNT; ++i)
579 CXINC;
580 }
581 cxstack_ix -= SLOT_COUNT; /* undo allocation */
404 582
583 c->mainstack = PL_mainstack;
584
585 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587
588 slot->defav = GvAV (PL_defgv);
589 slot->defsv = DEFSV;
590 slot->errsv = ERRSV;
591 slot->irsgv = GvSV (irsgv);
592
405#define VAR(name,type)c->name = PL_ ## name; 593 #define VAR(name,type) slot->name = PL_ ## name;
406# include "state.h" 594 # include "state.h"
407#undef VAR 595 #undef VAR
596 }
408} 597}
409 598
410/* 599/*
411 * allocate various perl stacks. This is an exact copy 600 * allocate various perl stacks. This is an exact copy
412 * of perl.c:init_stacks, except that it uses less memory 601 * of perl.c:init_stacks, except that it uses less memory
413 * on the (sometimes correct) assumption that coroutines do 602 * on the (sometimes correct) assumption that coroutines do
414 * not usually need a lot of stackspace. 603 * not usually need a lot of stackspace.
415 */ 604 */
605#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks
607#else
416static void 608static void
417coro_init_stacks () 609coro_init_stacks (pTHX)
418{ 610{
419 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 611 PL_curstackinfo = new_stackinfo(32, 8);
420 PL_curstackinfo->si_type = PERLSI_MAIN; 612 PL_curstackinfo->si_type = PERLSI_MAIN;
421 PL_curstack = PL_curstackinfo->si_stack; 613 PL_curstack = PL_curstackinfo->si_stack;
422 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 614 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
423 615
424 PL_stack_base = AvARRAY(PL_curstack); 616 PL_stack_base = AvARRAY(PL_curstack);
425 PL_stack_sp = PL_stack_base; 617 PL_stack_sp = PL_stack_base;
426 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 618 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
427 619
428 New(50,PL_tmps_stack,128,SV*); 620 New(50,PL_tmps_stack,32,SV*);
429 PL_tmps_floor = -1; 621 PL_tmps_floor = -1;
430 PL_tmps_ix = -1; 622 PL_tmps_ix = -1;
431 PL_tmps_max = 128; 623 PL_tmps_max = 32;
432 624
433 New(54,PL_markstack,32,I32); 625 New(54,PL_markstack,16,I32);
434 PL_markstack_ptr = PL_markstack; 626 PL_markstack_ptr = PL_markstack;
435 PL_markstack_max = PL_markstack + 32; 627 PL_markstack_max = PL_markstack + 16;
436 628
437#ifdef SET_MARK_OFFSET 629#ifdef SET_MARK_OFFSET
438 SET_MARK_OFFSET; 630 SET_MARK_OFFSET;
439#endif 631#endif
440 632
441 New(54,PL_scopestack,32,I32); 633 New(54,PL_scopestack,8,I32);
442 PL_scopestack_ix = 0; 634 PL_scopestack_ix = 0;
443 PL_scopestack_max = 32; 635 PL_scopestack_max = 8;
444 636
445 New(54,PL_savestack,64,ANY); 637 New(54,PL_savestack,24,ANY);
446 PL_savestack_ix = 0; 638 PL_savestack_ix = 0;
447 PL_savestack_max = 64; 639 PL_savestack_max = 24;
448 640
449#if !PERL_VERSION_ATLEAST (5,9,0) 641#if !PERL_VERSION_ATLEAST (5,10,0)
450 New(54,PL_retstack,16,OP*); 642 New(54,PL_retstack,4,OP*);
451 PL_retstack_ix = 0; 643 PL_retstack_ix = 0;
452 PL_retstack_max = 16; 644 PL_retstack_max = 4;
453#endif 645#endif
454} 646}
647#endif
455 648
456/* 649/*
457 * destroy the stacks, the callchain etc... 650 * destroy the stacks, the callchain etc...
458 */ 651 */
459static void 652static void
460coro_destroy_stacks () 653coro_destruct_stacks (pTHX)
461{ 654{
462 if (!IN_DESTRUCT)
463 {
464 /* is this ugly, I ask? */
465 LEAVE_SCOPE (0);
466
467 /* sure it is, but more important: is it correct?? :/ */
468 FREETMPS;
469
470 /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
471 }
472
473 while (PL_curstackinfo->si_next) 655 while (PL_curstackinfo->si_next)
474 PL_curstackinfo = PL_curstackinfo->si_next; 656 PL_curstackinfo = PL_curstackinfo->si_next;
475 657
476 while (PL_curstackinfo) 658 while (PL_curstackinfo)
477 { 659 {
478 PERL_SI *p = PL_curstackinfo->si_prev; 660 PERL_SI *p = PL_curstackinfo->si_prev;
479 661
480 { /*D*//*remove*/
481 dSP;
482 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
483 PUTBACK; /* possibly superfluous */
484 }
485
486 if (!IN_DESTRUCT) 662 if (!IN_DESTRUCT)
487 {
488 dounwind (-1);/*D*//*remove*/
489 SvREFCNT_dec (PL_curstackinfo->si_stack); 663 SvREFCNT_dec (PL_curstackinfo->si_stack);
490 }
491 664
492 Safefree (PL_curstackinfo->si_cxstack); 665 Safefree (PL_curstackinfo->si_cxstack);
493 Safefree (PL_curstackinfo); 666 Safefree (PL_curstackinfo);
494 PL_curstackinfo = p; 667 PL_curstackinfo = p;
495 } 668 }
496 669
497 Safefree (PL_tmps_stack); 670 Safefree (PL_tmps_stack);
498 Safefree (PL_markstack); 671 Safefree (PL_markstack);
499 Safefree (PL_scopestack); 672 Safefree (PL_scopestack);
500 Safefree (PL_savestack); 673 Safefree (PL_savestack);
501#if !PERL_VERSION_ATLEAST (5,9,0) 674#if !PERL_VERSION_ATLEAST (5,10,0)
502 Safefree (PL_retstack); 675 Safefree (PL_retstack);
503#endif 676#endif
504} 677}
505 678
679static size_t
680coro_rss (pTHX_ struct coro *coro)
681{
682 size_t rss = sizeof (*coro);
683
684 if (coro->mainstack)
685 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING)
690 {
691 slot = &tmp_slot;
692
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR
696 }
697 else
698 slot = coro->slot;
699
700 if (slot)
701 {
702 rss += sizeof (slot->curstackinfo);
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 }
714 }
715
716 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_set_stacklevel calling us */
722#define SSL_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_set_stacklevel */
724#define SSL_TAIL set_stacklevel_tail (aTHX)
725
726INLINE void
727set_stacklevel_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744}
745
746/** coroutine stack handling ************************************************/
747
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
749static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
750static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
751
752/* apparently < 5.8.8 */
753#ifndef MgPV_nolen_const
754#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
755 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
756 (const char*)(mg)->mg_ptr)
757#endif
758
759/*
760 * This overrides the default magic get method of %SIG elements.
761 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
762 * and instead of tryign to save and restore the hash elements, we just provide
763 * readback here.
764 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
765 * not expecting this to actually change the hook. This is a potential problem
766 * when a schedule happens then, but we ignore this.
767 */
768static int
769coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
770{
771 const char *s = MgPV_nolen_const (mg);
772
773 if (*s == '_')
774 {
775 SV **svp = 0;
776
777 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
778 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
779
780 if (svp)
781 {
782 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
783 return 0;
784 }
785 }
786
787 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
788}
789
790static int
791coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
792{
793 const char *s = MgPV_nolen_const (mg);
794
795 if (*s == '_')
796 {
797 SV **svp = 0;
798
799 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
800 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
801
802 if (svp)
803 {
804 SV *old = *svp;
805 *svp = 0;
806 SvREFCNT_dec (old);
807 return 0;
808 }
809 }
810
811 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
812}
813
814static int
815coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
816{
817 const char *s = MgPV_nolen_const (mg);
818
819 if (*s == '_')
820 {
821 SV **svp = 0;
822
823 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
824 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
825
826 if (svp)
827 {
828 SV *old = *svp;
829 *svp = newSVsv (sv);
830 SvREFCNT_dec (old);
831 return 0;
832 }
833 }
834
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836}
837
506static void 838static void
507setup_coro (struct coro *coro) 839coro_setup (pTHX_ struct coro *coro)
508{ 840{
509 /* 841 /*
510 * emulate part of the perl startup here. 842 * emulate part of the perl startup here.
511 */ 843 */
512
513 coro_init_stacks (); 844 coro_init_stacks (aTHX);
514 845
846 PL_runops = RUNOPS_DEFAULT;
515 PL_curcop = &PL_compiling; 847 PL_curcop = &PL_compiling;
516 PL_in_eval = EVAL_NULL; 848 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0;
517 PL_curpm = 0; 850 PL_curpm = 0;
851 PL_curpad = 0;
518 PL_localizing = 0; 852 PL_localizing = 0;
519 PL_dirty = 0; 853 PL_dirty = 0;
520 PL_restartop = 0; 854 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0;
857#endif
858
859 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
862
863 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
867 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
521 869
522 { 870 {
523 dSP; 871 dSP;
524 LOGOP myop; 872 UNOP myop;
525 873
526 SvREFCNT_dec (GvAV (PL_defgv));
527 GvAV (PL_defgv) = coro->args; coro->args = 0;
528
529 Zero (&myop, 1, LOGOP); 874 Zero (&myop, 1, UNOP);
530 myop.op_next = Nullop; 875 myop.op_next = Nullop;
531 myop.op_flags = OPf_WANT_VOID; 876 myop.op_flags = OPf_WANT_VOID;
532 877
533 PUSHMARK (SP); 878 PUSHMARK (SP);
534 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); 879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
535 PUTBACK; 880 PUTBACK;
536 PL_op = (OP *)&myop; 881 PL_op = (OP *)&myop;
537 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
538 SPAGAIN; 883 SPAGAIN;
539 } 884 }
540 885
541 ENTER; /* necessary e.g. for dounwind */ 886 /* this newly created coroutine might be run on an existing cctx which most
887 * likely was suspended in set_stacklevel, called from pp_set_stacklevel,
888 * so we have to emulate entering pp_set_stacklevel here.
889 */
890 SSL_HEAD;
542} 891}
543 892
544static void 893static void
894coro_destruct (pTHX_ struct coro *coro)
895{
896 if (!IN_DESTRUCT)
897 {
898 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0);
900 assert (PL_tmps_floor == -1);
901
902 /* free all temporaries */
903 FREETMPS;
904 assert (PL_tmps_ix == -1);
905
906 /* unwind all extra stacks */
907 POPSTACK_TO (PL_mainstack);
908
909 /* unwind main stack */
910 dounwind (-1);
911 }
912
913 SvREFCNT_dec (GvSV (PL_defgv));
914 SvREFCNT_dec (GvAV (PL_defgv));
915 SvREFCNT_dec (GvSV (PL_errgv));
916 SvREFCNT_dec (PL_defoutgv);
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922
923 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw);
925
926 coro_destruct_stacks (aTHX);
927}
928
929INLINE void
545free_coro_mortal () 930free_coro_mortal (pTHX)
546{ 931{
547 if (coro_mortal) 932 if (expect_true (coro_mortal))
548 { 933 {
549 SvREFCNT_dec (coro_mortal); 934 SvREFCNT_dec (coro_mortal);
550 coro_mortal = 0; 935 coro_mortal = 0;
551 } 936 }
552} 937}
553 938
939static int
940runops_trace (pTHX)
941{
942 COP *oldcop = 0;
943 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 {
949 PERL_ASYNC_CHECK ();
950
951 if (cctx->flags & CC_TRACE_ALL)
952 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
954 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top;
957 AV *av = newAV (); /* return values */
958 SV **cb;
959 dSP;
960
961 GV *gv = CvGV (cx->blk_sub.cv);
962 SV *fullname = sv_2mortal (newSV (0));
963 if (isGV (gv))
964 gv_efullname3 (fullname, gv, 0);
965
966 bot = PL_stack_base + cx->blk_oldsp + 1;
967 top = cx->blk_gimme == G_ARRAY ? SP + 1
968 : cx->blk_gimme == G_SCALAR ? bot + 1
969 : bot;
970
971 av_extend (av, top - bot);
972 while (bot < top)
973 av_push (av, SvREFCNT_inc_NN (*bot++));
974
975 PL_runops = RUNOPS_DEFAULT;
976 ENTER;
977 SAVETMPS;
978 EXTEND (SP, 3);
979 PUSHMARK (SP);
980 PUSHs (&PL_sv_no);
981 PUSHs (fullname);
982 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
983 PUTBACK;
984 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
985 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
986 SPAGAIN;
987 FREETMPS;
988 LEAVE;
989 PL_runops = runops_trace;
990 }
991
992 if (oldcop != PL_curcop)
993 {
994 oldcop = PL_curcop;
995
996 if (PL_curcop != &PL_compiling)
997 {
998 SV **cb;
999
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
1001 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0));
1010
1011 if (isGV (gv))
1012 gv_efullname3 (fullname, gv, 0);
1013
1014 PL_runops = RUNOPS_DEFAULT;
1015 ENTER;
1016 SAVETMPS;
1017 EXTEND (SP, 3);
1018 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN;
1026 FREETMPS;
1027 LEAVE;
1028 PL_runops = runops_trace;
1029 }
1030
1031 oldcxix = cxstack_ix;
1032 }
1033
1034 if (cctx->flags & CC_TRACE_LINE)
1035 {
1036 dSP;
1037
1038 PL_runops = RUNOPS_DEFAULT;
1039 ENTER;
1040 SAVETMPS;
1041 EXTEND (SP, 3);
1042 PL_runops = RUNOPS_DEFAULT;
1043 PUSHMARK (SP);
1044 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1045 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1046 PUTBACK;
1047 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1048 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1049 SPAGAIN;
1050 FREETMPS;
1051 LEAVE;
1052 PL_runops = runops_trace;
1053 }
1054 }
1055 }
1056 }
1057 }
1058
1059 TAINT_NOT;
1060 return 0;
1061}
1062
1063static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
1065{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0;
1068}
1069
554/* inject a fake call to Coro::State::_cctx_init into the execution */ 1070/* inject a fake call to Coro::State::_cctx_init into the execution */
1071/* _cctx_init should be careful, as it could be called at almost any time */
1072/* during execution of a perl program */
1073/* also initialises PL_top_env */
555static void NOINLINE 1074static void NOINLINE
556prepare_cctx (coro_cctx *cctx) 1075cctx_prepare (pTHX_ coro_cctx *cctx)
557{ 1076{
558 dSP; 1077 dSP;
559 LOGOP myop; 1078 UNOP myop;
560 1079
1080 PL_top_env = &PL_start_env;
1081
1082 if (cctx->flags & CC_TRACE)
1083 PL_runops = runops_trace;
1084
561 Zero (&myop, 1, LOGOP); 1085 Zero (&myop, 1, UNOP);
562 myop.op_next = PL_op; 1086 myop.op_next = PL_op;
563 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
564 1088
565 PUSHMARK (SP); 1089 PUSHMARK (SP);
566 EXTEND (SP, 2); 1090 EXTEND (SP, 2);
567 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1091 PUSHs (sv_2mortal (newSViv ((IV)cctx)));
568 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
569 PUTBACK; 1093 PUTBACK;
570 PL_op = (OP *)&myop; 1094 PL_op = (OP *)&myop;
571 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
572 SPAGAIN; 1096 SPAGAIN;
573} 1097}
574 1098
1099/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void
1101transfer_tail (pTHX)
1102{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118}
1119
1120/*
1121 * this is a _very_ stripped down perl interpreter ;)
1122 */
575static void 1123static void
576coro_run (void *arg) 1124cctx_run (void *arg)
577{ 1125{
1126#ifdef USE_ITHREADS
1127# if CORO_PTHREAD
1128 PERL_SET_CONTEXT (coro_thx);
1129# endif
1130#endif
1131 {
1132 dTHX;
1133
1134 /* we are the alternative tail to pp_set_stacklevel */
1135 /* so do the same things here */
1136 SSL_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next;
1140
1141 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg);
1143
578 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1144 /* cctx_run is the alternative tail of transfer() */
579 UNLOCK; 1145 transfer_tail (aTHX);
580 1146
581 /*
582 * this is a _very_ stripped down perl interpreter ;)
583 */
584 PL_top_env = &PL_start_env;
585
586 /* inject call to cctx_init */
587 prepare_cctx ((coro_cctx *)arg);
588
589 /* somebody will hit me for both perl_run and PL_restartop */ 1147 /* somebody or something will hit me for both perl_run and PL_restartop */
590 PL_restartop = PL_op; 1148 PL_restartop = PL_op;
591 perl_run (PL_curinterp); 1149 perl_run (PL_curinterp);
592 1150
593 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); 1151 /*
594 abort (); 1152 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the
1155 * bootstrap-time "top" top_env, as we cannot restore the "main"
1156 * coroutine as Coro has no such concept
1157 */
1158 PL_top_env = main_top_env;
1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 }
595} 1161}
596 1162
597static coro_cctx * 1163static coro_cctx *
598cctx_new () 1164cctx_new ()
599{ 1165{
600 coro_cctx *cctx; 1166 coro_cctx *cctx;
601 1167
602 ++cctx_count; 1168 ++cctx_count;
603
604 Newz (0, cctx, 1, coro_cctx); 1169 New (0, cctx, 1, coro_cctx);
1170
1171 cctx->gen = cctx_gen;
1172 cctx->flags = 0;
1173 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1174
1175 return cctx;
1176}
1177
1178/* create a new cctx only suitable as source */
1179static coro_cctx *
1180cctx_new_empty ()
1181{
1182 coro_cctx *cctx = cctx_new ();
1183
1184 cctx->sptr = 0;
1185 coro_create (&cctx->cctx, 0, 0, 0, 0);
1186
1187 return cctx;
1188}
1189
1190/* create a new cctx suitable as destination/running a perl interpreter */
1191static coro_cctx *
1192cctx_new_run ()
1193{
1194 coro_cctx *cctx = cctx_new ();
1195 void *stack_start;
1196 size_t stack_size;
605 1197
606#if HAVE_MMAP 1198#if HAVE_MMAP
607
608 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1199 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
609 /* mmap supposedly does allocate-on-write for us */ 1200 /* mmap supposedly does allocate-on-write for us */
610 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1201 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
611 1202
612 if (cctx->sptr == (void *)-1) 1203 if (cctx->sptr != (void *)-1)
1204 {
1205 #if CORO_STACKGUARD
1206 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1207 #endif
1208 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1209 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1210 cctx->flags |= CC_MAPPED;
613 { 1211 }
1212 else
1213#endif
1214 {
1215 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1216 New (0, cctx->sptr, cctx_stacksize, long);
1217
1218 if (!cctx->sptr)
1219 {
614 perror ("FATAL: unable to mmap stack for coroutine"); 1220 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
615 _exit (EXIT_FAILURE); 1221 _exit (EXIT_FAILURE);
616 } 1222 }
617 1223
618# if STACKGUARD 1224 stack_start = cctx->sptr;
619 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1225 stack_size = cctx->ssize;
620# endif
621
622#else
623
624 cctx->ssize = STACKSIZE * (long)sizeof (long);
625 New (0, cctx->sptr, STACKSIZE, long);
626
627 if (!cctx->sptr)
628 { 1226 }
629 perror ("FATAL: unable to malloc stack for coroutine");
630 _exit (EXIT_FAILURE);
631 }
632 1227
1228 #if CORO_USE_VALGRIND
1229 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
633#endif 1230 #endif
634 1231
635#if USE_VALGRIND 1232 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
636 cctx->valgrind_id = VALGRIND_STACK_REGISTER (
637 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
638 cctx->ssize + (char *)cctx->sptr
639 );
640#endif
641
642 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
643 1233
644 return cctx; 1234 return cctx;
645} 1235}
646 1236
647static void 1237static void
… …
649{ 1239{
650 if (!cctx) 1240 if (!cctx)
651 return; 1241 return;
652 1242
653 --cctx_count; 1243 --cctx_count;
1244 coro_destroy (&cctx->cctx);
654 1245
655#if USE_VALGRIND 1246 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr)
1248 {
1249 #if CORO_USE_VALGRIND
656 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1250 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
657#endif 1251 #endif
658 1252
659#if HAVE_MMAP 1253#if HAVE_MMAP
1254 if (cctx->flags & CC_MAPPED)
660 munmap (cctx->sptr, cctx->ssize); 1255 munmap (cctx->sptr, cctx->ssize);
661#else 1256 else
1257#endif
662 Safefree (cctx->sptr); 1258 Safefree (cctx->sptr);
663#endif 1259 }
664 1260
665 Safefree (cctx); 1261 Safefree (cctx);
666} 1262}
667 1263
1264/* wether this cctx should be destructed */
1265#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1266
668static coro_cctx * 1267static coro_cctx *
669cctx_get () 1268cctx_get (pTHX)
670{ 1269{
671 coro_cctx *cctx; 1270 while (expect_true (cctx_first))
672
673 if (cctx_first)
674 { 1271 {
675 cctx = cctx_first; 1272 coro_cctx *cctx = cctx_first;
676 cctx_first = cctx->next; 1273 cctx_first = cctx->next;
677 --cctx_idle; 1274 --cctx_idle;
678 } 1275
679 else 1276 if (expect_true (!CCTX_EXPIRED (cctx)))
680 { 1277 return cctx;
681 cctx = cctx_new (); 1278
682 PL_op = PL_op->op_next; 1279 cctx_destroy (cctx);
683 } 1280 }
684 1281
685 return cctx; 1282 return cctx_new_run ();
686} 1283}
687 1284
688static void 1285static void
689cctx_put (coro_cctx *cctx) 1286cctx_put (coro_cctx *cctx)
690{ 1287{
1288 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1289
691 /* free another cctx if overlimit */ 1290 /* free another cctx if overlimit */
692 if (cctx_idle >= MAX_IDLE_CCTX) 1291 if (expect_false (cctx_idle >= cctx_max_idle))
693 { 1292 {
694 coro_cctx *first = cctx_first; 1293 coro_cctx *first = cctx_first;
695 cctx_first = first->next; 1294 cctx_first = first->next;
696 --cctx_idle; 1295 --cctx_idle;
697 1296
698 assert (!first->inuse);
699 cctx_destroy (first); 1297 cctx_destroy (first);
700 } 1298 }
701 1299
702 ++cctx_idle; 1300 ++cctx_idle;
703 cctx->next = cctx_first; 1301 cctx->next = cctx_first;
704 cctx_first = cctx; 1302 cctx_first = cctx;
705} 1303}
706 1304
707/* never call directly, always through the coro_state_transfer global variable */ 1305/** coroutine switching *****************************************************/
1306
1307static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{
1310 if (expect_true (prev != next))
1311 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1314
1315 if (expect_false (next->flags & CF_RUNNING))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1317
1318 if (expect_false (next->flags & CF_DESTROYED))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1320
1321#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1324#endif
1325 }
1326}
1327
1328/* always use the TRANSFER macro */
708static void NOINLINE 1329static void NOINLINE
709transfer (struct coro *prev, struct coro *next) 1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
710{ 1331{
711 dSTACKLEVEL; 1332 dSTACKLEVEL;
712 1333
713 /* sometimes transfer is only called to set idle_sp */ 1334 /* sometimes transfer is only called to set idle_sp */
714 if (!next) 1335 if (expect_false (!next))
715 { 1336 {
716 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1337 ((coro_cctx *)prev)->idle_sp = stacklevel;
717 assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */ 1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
718 } 1339 }
719 else if (prev != next) 1340 else if (expect_true (prev != next))
720 { 1341 {
721 coro_cctx *prev__cctx; 1342 coro_cctx *prev__cctx;
722 1343
723 if (prev->flags & CF_NEW) 1344 if (expect_false (prev->flags & CF_NEW))
724 { 1345 {
725 /* create a new empty context */ 1346 /* create a new empty/source context */
726 Newz (0, prev->cctx, 1, coro_cctx); 1347 prev->cctx = cctx_new_empty ();
727 prev->cctx->inuse = 1;
728 prev->flags &= ~CF_NEW; 1348 prev->flags &= ~CF_NEW;
729 prev->flags |= CF_RUNNING; 1349 prev->flags |= CF_RUNNING;
730 } 1350 }
731 1351
732 /*TODO: must not croak here */
733 if (!prev->flags & CF_RUNNING)
734 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
735
736 if (next->flags & CF_RUNNING)
737 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
738
739 prev->flags &= ~CF_RUNNING; 1352 prev->flags &= ~CF_RUNNING;
740 next->flags |= CF_RUNNING; 1353 next->flags |= CF_RUNNING;
741 1354
742 LOCK; 1355 LOCK;
743 1356
1357 /* first get rid of the old state */
1358 save_perl (aTHX_ prev);
1359
744 if (next->flags & CF_NEW) 1360 if (expect_false (next->flags & CF_NEW))
745 { 1361 {
746 /* need to start coroutine */ 1362 /* need to start coroutine */
747 next->flags &= ~CF_NEW; 1363 next->flags &= ~CF_NEW;
748 /* first get rid of the old state */
749 save_perl (prev);
750 /* setup coroutine call */ 1364 /* setup coroutine call */
751 setup_coro (next); 1365 coro_setup (aTHX_ next);
752 /* need a new stack */
753 assert (!next->cctx);
754 } 1366 }
755 else 1367 else
1368 load_perl (aTHX_ next);
1369
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */
1373 if (expect_true (
1374 prev__cctx->idle_sp == stacklevel
1375 && !(prev__cctx->flags & CC_TRACE)
1376 && !force_cctx
1377 ))
756 { 1378 {
757 /* coroutine already started */ 1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
758 save_perl (prev); 1380 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
759 load_perl (next); 1381
1382 prev->cctx = 0;
1383
1384 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1385 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1387 if (!next->cctx)
1388 next->cctx = cctx_get (aTHX);
1389
1390 cctx_put (prev__cctx);
760 } 1391 }
761 1392
762 prev__cctx = prev->cctx; 1393 ++next->usecount;
763 1394
764 /* possibly "free" the cctx */
765 if (prev__cctx->idle_sp == STACKLEVEL)
766 {
767 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
768 assert (PL_top_env == prev__cctx->top_env);
769
770 prev->cctx = 0;
771
772 cctx_put (prev__cctx);
773 prev__cctx->inuse = 0;
774 }
775
776 if (!next->cctx) 1395 if (expect_true (!next->cctx))
777 {
778 next->cctx = cctx_get (); 1396 next->cctx = cctx_get (aTHX);
779 assert (!next->cctx->inuse);
780 next->cctx->inuse = 1;
781 }
782 1397
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
1399 transfer_next = next;
1400
783 if (prev__cctx != next->cctx) 1401 if (expect_false (prev__cctx != next->cctx))
784 { 1402 {
785 prev__cctx->top_env = PL_top_env; 1403 prev__cctx->top_env = PL_top_env;
786 PL_top_env = next->cctx->top_env; 1404 PL_top_env = next->cctx->top_env;
787 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
788 } 1406 }
789 1407
790 free_coro_mortal (); 1408 transfer_tail (aTHX);
1409 }
1410}
791 1411
1412#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1413#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1414
1415/** high level stuff ********************************************************/
1416
1417static int
1418coro_state_destroy (pTHX_ struct coro *coro)
1419{
1420 if (coro->flags & CF_DESTROYED)
1421 return 0;
1422
1423 coro->flags |= CF_DESTROYED;
1424
1425 if (coro->flags & CF_READY)
1426 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready;
792 UNLOCK; 1431 UNLOCK;
793 } 1432 }
794} 1433 else
795 1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
796struct transfer_args
797{
798 struct coro *prev, *next;
799};
800
801#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
802
803static void
804coro_state_destroy (struct coro *coro)
805{
806 if (coro->refcnt--)
807 return;
808 1435
809 if (coro->mainstack && coro->mainstack != main_mainstack) 1436 if (coro->mainstack && coro->mainstack != main_mainstack)
810 { 1437 {
811 struct coro temp; 1438 struct coro temp;
812 Zero (&temp, 1, struct coro);
813 temp.save = CORO_SAVE_ALL;
814 1439
815 if (coro->flags & CF_RUNNING) 1440 if (coro->flags & CF_RUNNING)
816 croak ("FATAL: tried to destroy currently running coroutine"); 1441 croak ("FATAL: tried to destroy currently running coroutine");
817 1442
818 save_perl (&temp); 1443 save_perl (aTHX_ &temp);
819 load_perl (coro); 1444 load_perl (aTHX_ coro);
820 1445
821 coro_destroy_stacks (); 1446 coro_destruct (aTHX_ coro);
822 1447
823 load_perl (&temp); /* this will get rid of defsv etc.. */ 1448 load_perl (aTHX_ &temp);
824 1449
825 coro->mainstack = 0; 1450 coro->slot = 0;
826 } 1451 }
827 1452
828 cctx_destroy (coro->cctx); 1453 cctx_destroy (coro->cctx);
829 SvREFCNT_dec (coro->args); 1454 SvREFCNT_dec (coro->args);
830 Safefree (coro); 1455
1456 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next;
1459
1460 return 1;
831} 1461}
832 1462
833static int 1463static int
834coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1464coro_state_free (pTHX_ SV *sv, MAGIC *mg)
835{ 1465{
836 struct coro *coro = (struct coro *)mg->mg_ptr; 1466 struct coro *coro = (struct coro *)mg->mg_ptr;
837 mg->mg_ptr = 0; 1467 mg->mg_ptr = 0;
838 1468
1469 coro->hv = 0;
1470
1471 if (--coro->refcnt < 0)
1472 {
839 coro_state_destroy (coro); 1473 coro_state_destroy (aTHX_ coro);
1474 Safefree (coro);
1475 }
840 1476
841 return 0; 1477 return 0;
842} 1478}
843 1479
844static int 1480static int
… …
851 return 0; 1487 return 0;
852} 1488}
853 1489
854static MGVTBL coro_state_vtbl = { 1490static MGVTBL coro_state_vtbl = {
855 0, 0, 0, 0, 1491 0, 0, 0, 0,
856 coro_state_clear, 1492 coro_state_free,
857 0, 1493 0,
858#ifdef MGf_DUP 1494#ifdef MGf_DUP
859 coro_state_dup, 1495 coro_state_dup,
860#else 1496#else
861# define MGf_DUP 0 1497# define MGf_DUP 0
862#endif 1498#endif
863}; 1499};
864 1500
865static struct coro *
866SvSTATE (SV *coro)
867{
868 HV *stash;
869 MAGIC *mg;
870
871 if (SvROK (coro))
872 coro = SvRV (coro);
873
874 stash = SvSTASH (coro);
875 if (stash != coro_stash && stash != coro_state_stash)
876 {
877 /* very slow, but rare, check */
878 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
879 croak ("Coro::State object required");
880 }
881
882 mg = SvMAGIC (coro);
883 assert (mg->mg_type == PERL_MAGIC_ext);
884 return (struct coro *)mg->mg_ptr;
885}
886
887static void 1501static void
888prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
889{ 1503{
890 ta->prev = SvSTATE (prev_sv); 1504 ta->prev = SvSTATE (prev_sv);
891 ta->next = SvSTATE (next_sv); 1505 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta);
892} 1507}
893 1508
894static void 1509static void
895api_transfer (SV *prev_sv, SV *next_sv) 1510api_transfer (SV *prev_sv, SV *next_sv)
896{ 1511{
1512 dTHX;
897 struct transfer_args ta; 1513 struct transfer_args ta;
898 1514
899 prepare_transfer (&ta, prev_sv, next_sv); 1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
900 TRANSFER (ta); 1516 TRANSFER (ta, 1);
901}
902
903static int
904api_save (SV *coro_sv, int new_save)
905{
906 struct coro *coro = SvSTATE (coro_sv);
907 int old_save = coro->save;
908
909 if (new_save >= 0)
910 coro->save = new_save;
911
912 return old_save;
913} 1517}
914 1518
915/** Coro ********************************************************************/ 1519/** Coro ********************************************************************/
916 1520
917#define PRIO_MAX 3
918#define PRIO_HIGH 1
919#define PRIO_NORMAL 0
920#define PRIO_LOW -1
921#define PRIO_IDLE -3
922#define PRIO_MIN -4
923
924/* for Coro.pm */
925static SV *coro_current;
926static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
927static int coro_nready;
928
929static void 1521static void
930coro_enq (SV *coro_sv) 1522coro_enq (pTHX_ SV *coro_sv)
931{ 1523{
932 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1524 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
933 coro_nready++;
934} 1525}
935 1526
936static SV * 1527static SV *
937coro_deq (int min_prio) 1528coro_deq (pTHX)
938{ 1529{
939 int prio = PRIO_MAX - PRIO_MIN; 1530 int prio;
940 1531
941 min_prio -= PRIO_MIN;
942 if (min_prio < 0)
943 min_prio = 0;
944
945 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1532 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
946 if (AvFILLp (coro_ready [prio]) >= 0) 1533 if (AvFILLp (coro_ready [prio]) >= 0)
947 {
948 coro_nready--;
949 return av_shift (coro_ready [prio]); 1534 return av_shift (coro_ready [prio]);
950 }
951 1535
952 return 0; 1536 return 0;
953} 1537}
954 1538
955static int 1539static int
956api_ready (SV *coro_sv) 1540api_ready (SV *coro_sv)
957{ 1541{
1542 dTHX;
958 struct coro *coro; 1543 struct coro *coro;
1544 SV *sv_hook;
1545 void (*xs_hook)(void);
959 1546
960 if (SvROK (coro_sv)) 1547 if (SvROK (coro_sv))
961 coro_sv = SvRV (coro_sv); 1548 coro_sv = SvRV (coro_sv);
962 1549
963 coro = SvSTATE (coro_sv); 1550 coro = SvSTATE (coro_sv);
964 1551
965 if (coro->flags & CF_READY) 1552 if (coro->flags & CF_READY)
966 return 0; 1553 return 0;
967 1554
968#if 0 /* this is actually harmless */
969 if (coro->flags & CF_RUNNING)
970 croak ("Coro::ready called on currently running coroutine");
971#endif
972
973 coro->flags |= CF_READY; 1555 coro->flags |= CF_READY;
974 1556
975 LOCK; 1557 LOCK;
1558
1559 sv_hook = coro_nready ? 0 : coro_readyhook;
1560 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1561
976 coro_enq (SvREFCNT_inc (coro_sv)); 1562 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1563 ++coro_nready;
1564
977 UNLOCK; 1565 UNLOCK;
1566
1567 if (sv_hook)
1568 {
1569 dSP;
1570
1571 ENTER;
1572 SAVETMPS;
1573
1574 PUSHMARK (SP);
1575 PUTBACK;
1576 call_sv (sv_hook, G_DISCARD);
1577 SPAGAIN;
1578
1579 FREETMPS;
1580 LEAVE;
1581 }
1582
1583 if (xs_hook)
1584 xs_hook ();
978 1585
979 return 1; 1586 return 1;
980} 1587}
981 1588
982static int 1589static int
983api_is_ready (SV *coro_sv) 1590api_is_ready (SV *coro_sv)
984{ 1591{
1592 dTHX;
1593
985 return !!SvSTATE (coro_sv)->flags & CF_READY; 1594 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595}
1596
1597INLINE void
1598prepare_schedule (pTHX_ struct transfer_args *ta)
1599{
1600 SV *prev_sv, *next_sv;
1601
1602 for (;;)
1603 {
1604 LOCK;
1605 next_sv = coro_deq (aTHX);
1606
1607 /* nothing to schedule: call the idle handler */
1608 if (expect_false (!next_sv))
1609 {
1610 dSP;
1611 UNLOCK;
1612
1613 ENTER;
1614 SAVETMPS;
1615
1616 PUSHMARK (SP);
1617 PUTBACK;
1618 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1619 SPAGAIN;
1620
1621 FREETMPS;
1622 LEAVE;
1623 continue;
1624 }
1625
1626 ta->next = SvSTATE (next_sv);
1627
1628 /* cannot transfer to destroyed coros, skip and look for next */
1629 if (expect_false (ta->next->flags & CF_DESTROYED))
1630 {
1631 UNLOCK;
1632 SvREFCNT_dec (next_sv);
1633 /* coro_nready has already been taken care of by destroy */
1634 continue;
1635 }
1636
1637 --coro_nready;
1638 UNLOCK;
1639 break;
1640 }
1641
1642 /* free this only after the transfer */
1643 prev_sv = SvRV (coro_current);
1644 ta->prev = SvSTATE (prev_sv);
1645 TRANSFER_CHECK (*ta);
1646 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1647 ta->next->flags &= ~CF_READY;
1648 SvRV_set (coro_current, next_sv);
1649
1650 LOCK;
1651 free_coro_mortal (aTHX);
1652 coro_mortal = prev_sv;
1653 UNLOCK;
1654}
1655
1656INLINE void
1657prepare_cede (pTHX_ struct transfer_args *ta)
1658{
1659 api_ready (coro_current);
1660 prepare_schedule (aTHX_ ta);
986} 1661}
987 1662
988static void 1663static void
989prepare_schedule (struct transfer_args *ta) 1664prepare_cede_notself (pTHX_ struct transfer_args *ta)
990{ 1665{
991 SV *prev, *next;
992
993 for (;;)
994 {
995 LOCK;
996 next = coro_deq (PRIO_MIN);
997 UNLOCK;
998
999 if (next)
1000 break;
1001
1002 {
1003 dSP;
1004
1005 ENTER;
1006 SAVETMPS;
1007
1008 PUSHMARK (SP);
1009 PUTBACK;
1010 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1011
1012 FREETMPS;
1013 LEAVE;
1014 }
1015 }
1016
1017 prev = SvRV (coro_current); 1666 SV *prev = SvRV (coro_current);
1018 SvRV_set (coro_current, next);
1019 1667
1020 /* free this only after the transfer */ 1668 if (coro_nready)
1021 LOCK; 1669 {
1022 free_coro_mortal ();
1023 UNLOCK;
1024 coro_mortal = prev;
1025
1026 assert (!SvROK(prev));//D
1027 assert (!SvROK(next));//D
1028
1029 ta->prev = SvSTATE (prev);
1030 ta->next = SvSTATE (next);
1031
1032 assert (ta->next->flags & CF_READY);
1033 ta->next->flags &= ~CF_READY;
1034}
1035
1036static void
1037prepare_cede (struct transfer_args *ta)
1038{
1039 api_ready (coro_current);
1040
1041 prepare_schedule (ta); 1670 prepare_schedule (aTHX_ ta);
1671 api_ready (prev);
1672 }
1673 else
1674 ta->prev = ta->next = SvSTATE (prev);
1042} 1675}
1043 1676
1044static void 1677static void
1045api_schedule (void) 1678api_schedule (void)
1046{ 1679{
1680 dTHX;
1047 struct transfer_args ta; 1681 struct transfer_args ta;
1048 1682
1049 prepare_schedule (&ta); 1683 prepare_schedule (aTHX_ &ta);
1050 TRANSFER (ta); 1684 TRANSFER (ta, 1);
1685}
1686
1687static int
1688api_cede (void)
1689{
1690 dTHX;
1691 struct transfer_args ta;
1692
1693 prepare_cede (aTHX_ &ta);
1694
1695 if (expect_true (ta.prev != ta.next))
1696 {
1697 TRANSFER (ta, 1);
1698 return 1;
1699 }
1700 else
1701 return 0;
1702}
1703
1704static int
1705api_cede_notself (void)
1706{
1707 if (coro_nready)
1708 {
1709 dTHX;
1710 struct transfer_args ta;
1711
1712 prepare_cede_notself (aTHX_ &ta);
1713 TRANSFER (ta, 1);
1714 return 1;
1715 }
1716 else
1717 return 0;
1051} 1718}
1052 1719
1053static void 1720static void
1054api_cede (void) 1721api_trace (SV *coro_sv, int flags)
1055{ 1722{
1723 dTHX;
1724 struct coro *coro = SvSTATE (coro_sv);
1725
1726 if (flags & CC_TRACE)
1727 {
1728 if (!coro->cctx)
1729 coro->cctx = cctx_new_run ();
1730 else if (!(coro->cctx->flags & CC_TRACE))
1731 croak ("cannot enable tracing on coroutine with custom stack");
1732
1733 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1734 }
1735 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1736 {
1737 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1738
1739 if (coro->flags & CF_RUNNING)
1740 PL_runops = RUNOPS_DEFAULT;
1741 else
1742 coro->slot->runops = RUNOPS_DEFAULT;
1743 }
1744}
1745
1746#if 0
1747static int
1748coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1749{
1750 AV *padlist;
1751 AV *av = (AV *)mg->mg_obj;
1752
1753 abort ();
1754
1755 return 0;
1756}
1757
1758static MGVTBL coro_gensub_vtbl = {
1759 0, 0, 0, 0,
1760 coro_gensub_free
1761};
1762#endif
1763
1764/*****************************************************************************/
1765/* PerlIO::cede */
1766
1767typedef struct
1768{
1769 PerlIOBuf base;
1770 NV next, every;
1771} PerlIOCede;
1772
1773static IV
1774PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1775{
1776 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1777
1778 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1779 self->next = nvtime () + self->every;
1780
1781 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1782}
1783
1784static SV *
1785PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1786{
1787 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1788
1789 return newSVnv (self->every);
1790}
1791
1792static IV
1793PerlIOCede_flush (pTHX_ PerlIO *f)
1794{
1795 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1796 double now = nvtime ();
1797
1798 if (now >= self->next)
1799 {
1800 api_cede ();
1801 self->next = now + self->every;
1802 }
1803
1804 return PerlIOBuf_flush (aTHX_ f);
1805}
1806
1807static PerlIO_funcs PerlIO_cede =
1808{
1809 sizeof(PerlIO_funcs),
1810 "cede",
1811 sizeof(PerlIOCede),
1812 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1813 PerlIOCede_pushed,
1814 PerlIOBuf_popped,
1815 PerlIOBuf_open,
1816 PerlIOBase_binmode,
1817 PerlIOCede_getarg,
1818 PerlIOBase_fileno,
1819 PerlIOBuf_dup,
1820 PerlIOBuf_read,
1821 PerlIOBuf_unread,
1822 PerlIOBuf_write,
1823 PerlIOBuf_seek,
1824 PerlIOBuf_tell,
1825 PerlIOBuf_close,
1826 PerlIOCede_flush,
1827 PerlIOBuf_fill,
1828 PerlIOBase_eof,
1829 PerlIOBase_error,
1830 PerlIOBase_clearerr,
1831 PerlIOBase_setlinebuf,
1832 PerlIOBuf_get_base,
1833 PerlIOBuf_bufsiz,
1834 PerlIOBuf_get_ptr,
1835 PerlIOBuf_get_cnt,
1836 PerlIOBuf_set_ptrcnt,
1837};
1838
1839/*****************************************************************************/
1840
1841static const CV *ssl_cv; /* for quick consistency check */
1842
1843static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1844static SV *ssl_arg0;
1845static SV *ssl_arg1;
1846
1847/* this restores the stack in the case we patched the entersub, to */
1848/* recreate the stack frame as perl will on following calls */
1849/* since entersub cleared the stack */
1850static OP *
1851pp_restore (pTHX)
1852{
1853 dSP;
1854
1855 PUSHMARK (SP);
1856
1857 EXTEND (SP, 3);
1858 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0;
1859 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1860 PUSHs ((SV *)CvGV (ssl_cv));
1861
1862 RETURNOP (ssl_restore.op_first);
1863}
1864
1865#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */
1866
1867/* declare prototype */
1868XS(XS_Coro__State__set_stacklevel);
1869
1870/*
1871 * these not obviously related functions are all rolled into one
1872 * function to increase chances that they all will call transfer with the same
1873 * stack offset
1874 */
1875static OP *
1876pp_set_stacklevel (pTHX)
1877{
1878 dSP;
1056 struct transfer_args ta; 1879 struct transfer_args ta;
1880 SV **arg = PL_stack_base + TOPMARK + 1;
1881 int items = SP - arg; /* args without function object */
1057 1882
1883 /* do a quick consistency check on the "function" object, and if it isn't */
1884 /* for us, divert to the real entersub */
1885 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1886 return PL_ppaddr[OP_ENTERSUB](aTHX);
1887
1888 /* pop args */
1889 SP = PL_stack_base + POPMARK;
1890
1891 if (!(PL_op->op_flags & OPf_STACKED))
1892 {
1893 /* ampersand-form of call, use @_ instead of stack */
1894 AV *av = GvAV (PL_defgv);
1895 arg = AvARRAY (av);
1896 items = AvFILLp (av) + 1;
1897 }
1898
1899 PUTBACK;
1900 switch (PL_op->op_private & OPpENTERSUB_SSL)
1901 {
1902 case 0:
1903 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1904 break;
1905
1906 case 1:
1907 if (items != 2)
1908 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1909
1910 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1911 break;
1912
1913 case 2:
1914 prepare_schedule (aTHX_ &ta);
1915 break;
1916
1917 case 3:
1058 prepare_cede (&ta); 1918 prepare_cede (aTHX_ &ta);
1919 break;
1920
1921 case 4:
1922 prepare_cede_notself (aTHX_ &ta);
1923 break;
1924 }
1925
1059 TRANSFER (ta); 1926 TRANSFER (ta, 0);
1060} 1927 SPAGAIN;
1061 1928
1929skip:
1930 PUTBACK;
1931 SSL_TAIL;
1932 SPAGAIN;
1933 RETURN;
1934}
1935
1936static void
1937coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items)
1938{
1939 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1940
1941 assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
1942 ssl_cv = cv;
1943
1944 /* we patch the op, and then re-run the whole call */
1945 /* we have to put some dummy argument on the stack for this to work */
1946 ssl_restore.op_next = (OP *)&ssl_restore;
1947 ssl_restore.op_type = OP_NULL;
1948 ssl_restore.op_ppaddr = pp_restore;
1949 ssl_restore.op_first = PL_op;
1950
1951 ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1952 ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1953
1954 PL_op->op_ppaddr = pp_set_stacklevel;
1955 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
1956
1957 PL_op = (OP *)&ssl_restore;
1958}
1959
1062MODULE = Coro::State PACKAGE = Coro::State 1960MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1063 1961
1064PROTOTYPES: DISABLE 1962PROTOTYPES: DISABLE
1065 1963
1066BOOT: 1964BOOT:
1067{ 1965{
1068#ifdef USE_ITHREADS 1966#ifdef USE_ITHREADS
1069 MUTEX_INIT (&coro_mutex); 1967 MUTEX_INIT (&coro_lock);
1968# if CORO_PTHREAD
1969 coro_thx = PERL_GET_CONTEXT;
1970# endif
1070#endif 1971#endif
1071 BOOT_PAGESIZE; 1972 BOOT_PAGESIZE;
1072 1973
1974 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1975 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1976
1977 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1978 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1979 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1980
1981 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1982 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1983 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1984
1073 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1985 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1074 1986
1987 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1988 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1075 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); 1989 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1076 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1077 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1078 newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1079 newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); 1990 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1080 1991
1081 main_mainstack = PL_mainstack; 1992 main_mainstack = PL_mainstack;
1993 main_top_env = PL_top_env;
1082 1994
1995 while (main_top_env->je_prev)
1996 main_top_env = main_top_env->je_prev;
1997
1083 coroapi.ver = CORO_API_VERSION; 1998 coroapi.ver = CORO_API_VERSION;
1999 coroapi.rev = CORO_API_REVISION;
1084 coroapi.transfer = api_transfer; 2000 coroapi.transfer = api_transfer;
2001
2002 {
2003 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2004
2005 if (!svp) croak ("Time::HiRes is required");
2006 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2007
2008 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2009 }
1085 2010
1086 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2011 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1087} 2012}
1088 2013
1089SV * 2014SV *
1090new (char *klass, ...) 2015new (char *klass, ...)
1091 CODE: 2016 CODE:
1092{ 2017{
1093 struct coro *coro; 2018 struct coro *coro;
2019 MAGIC *mg;
1094 HV *hv; 2020 HV *hv;
1095 int i; 2021 int i;
1096 2022
1097 Newz (0, coro, 1, struct coro); 2023 Newz (0, coro, 1, struct coro);
1098 coro->args = newAV (); 2024 coro->args = newAV ();
1099 coro->save = CORO_SAVE_ALL;
1100 coro->flags = CF_NEW; 2025 coro->flags = CF_NEW;
1101 2026
2027 if (coro_first) coro_first->prev = coro;
2028 coro->next = coro_first;
2029 coro_first = coro;
2030
1102 hv = newHV (); 2031 coro->hv = hv = newHV ();
1103 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 2032 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2033 mg->mg_flags |= MGf_DUP;
1104 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 2034 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1105 2035
2036 av_extend (coro->args, items - 1);
1106 for (i = 1; i < items; i++) 2037 for (i = 1; i < items; i++)
1107 av_push (coro->args, newSVsv (ST (i))); 2038 av_push (coro->args, newSVsv (ST (i)));
1108} 2039}
1109 OUTPUT: 2040 OUTPUT:
1110 RETVAL
1111
1112int
1113save (SV *coro, int new_save = -1)
1114 CODE:
1115 RETVAL = api_save (coro, new_save);
1116 OUTPUT:
1117 RETVAL 2041 RETVAL
1118 2042
1119void 2043void
1120_set_stacklevel (...) 2044_set_stacklevel (...)
1121 ALIAS: 2045 ALIAS:
1122 Coro::State::transfer = 1 2046 Coro::State::transfer = 1
1123 Coro::schedule = 2 2047 Coro::schedule = 2
1124 Coro::cede = 3 2048 Coro::cede = 3
2049 Coro::cede_notself = 4
1125 CODE: 2050 CODE:
1126{ 2051 coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);
1127 struct transfer_args ta;
1128 2052
1129 switch (ix) 2053bool
1130 { 2054_destroy (SV *coro_sv)
1131 case 0: 2055 CODE:
1132 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 2056 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1133 ta.next = 0; 2057 OUTPUT:
1134 break; 2058 RETVAL
1135
1136 case 1:
1137 if (items != 2)
1138 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1139
1140 prepare_transfer (&ta, ST (0), ST (1));
1141 break;
1142
1143 case 2:
1144 prepare_schedule (&ta);
1145 break;
1146
1147 case 3:
1148 prepare_cede (&ta);
1149 break;
1150 }
1151
1152 TRANSFER (ta);
1153}
1154 2059
1155void 2060void
1156_clone_state_from (SV *dst, SV *src)
1157 CODE:
1158{
1159 struct coro *coro_src = SvSTATE (src);
1160
1161 sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1162
1163 ++coro_src->refcnt;
1164 sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1165}
1166
1167void
1168_exit (code) 2061_exit (int code)
1169 int code
1170 PROTOTYPE: $ 2062 PROTOTYPE: $
1171 CODE: 2063 CODE:
1172 _exit (code); 2064 _exit (code);
2065
2066int
2067cctx_stacksize (int new_stacksize = 0)
2068 CODE:
2069 RETVAL = cctx_stacksize;
2070 if (new_stacksize)
2071 {
2072 cctx_stacksize = new_stacksize;
2073 ++cctx_gen;
2074 }
2075 OUTPUT:
2076 RETVAL
2077
2078int
2079cctx_max_idle (int max_idle = 0)
2080 CODE:
2081 RETVAL = cctx_max_idle;
2082 if (max_idle > 1)
2083 cctx_max_idle = max_idle;
2084 OUTPUT:
2085 RETVAL
1173 2086
1174int 2087int
1175cctx_count () 2088cctx_count ()
1176 CODE: 2089 CODE:
1177 RETVAL = cctx_count; 2090 RETVAL = cctx_count;
… …
1183 CODE: 2096 CODE:
1184 RETVAL = cctx_idle; 2097 RETVAL = cctx_idle;
1185 OUTPUT: 2098 OUTPUT:
1186 RETVAL 2099 RETVAL
1187 2100
2101void
2102list ()
2103 PPCODE:
2104{
2105 struct coro *coro;
2106 for (coro = coro_first; coro; coro = coro->next)
2107 if (coro->hv)
2108 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2109}
2110
2111void
2112call (Coro::State coro, SV *coderef)
2113 ALIAS:
2114 eval = 1
2115 CODE:
2116{
2117 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2118 {
2119 struct coro temp;
2120
2121 if (!(coro->flags & CF_RUNNING))
2122 {
2123 PUTBACK;
2124 save_perl (aTHX_ &temp);
2125 load_perl (aTHX_ coro);
2126 }
2127
2128 {
2129 dSP;
2130 ENTER;
2131 SAVETMPS;
2132 PUTBACK;
2133 PUSHSTACK;
2134 PUSHMARK (SP);
2135
2136 if (ix)
2137 eval_sv (coderef, 0);
2138 else
2139 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2140
2141 POPSTACK;
2142 SPAGAIN;
2143 FREETMPS;
2144 LEAVE;
2145 PUTBACK;
2146 }
2147
2148 if (!(coro->flags & CF_RUNNING))
2149 {
2150 save_perl (aTHX_ coro);
2151 load_perl (aTHX_ &temp);
2152 SPAGAIN;
2153 }
2154 }
2155}
2156
2157SV *
2158is_ready (Coro::State coro)
2159 PROTOTYPE: $
2160 ALIAS:
2161 is_ready = CF_READY
2162 is_running = CF_RUNNING
2163 is_new = CF_NEW
2164 is_destroyed = CF_DESTROYED
2165 CODE:
2166 RETVAL = boolSV (coro->flags & ix);
2167 OUTPUT:
2168 RETVAL
2169
2170void
2171throw (Coro::State self, SV *throw = &PL_sv_undef)
2172 PROTOTYPE: $;$
2173 CODE:
2174 SvREFCNT_dec (self->throw);
2175 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2176
2177void
2178api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2179
2180SV *
2181has_cctx (Coro::State coro)
2182 PROTOTYPE: $
2183 CODE:
2184 RETVAL = boolSV (!!coro->cctx);
2185 OUTPUT:
2186 RETVAL
2187
2188int
2189is_traced (Coro::State coro)
2190 PROTOTYPE: $
2191 CODE:
2192 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
2193 OUTPUT:
2194 RETVAL
2195
2196UV
2197rss (Coro::State coro)
2198 PROTOTYPE: $
2199 ALIAS:
2200 usecount = 1
2201 CODE:
2202 switch (ix)
2203 {
2204 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2205 case 1: RETVAL = coro->usecount; break;
2206 }
2207 OUTPUT:
2208 RETVAL
2209
2210void
2211force_cctx ()
2212 CODE:
2213 struct coro *coro = SvSTATE (coro_current);
2214 coro->cctx->idle_sp = 0;
2215
2216void
2217swap_defsv (Coro::State self)
2218 PROTOTYPE: $
2219 ALIAS:
2220 swap_defav = 1
2221 CODE:
2222 if (!self->slot)
2223 croak ("cannot swap state with coroutine that has no saved state");
2224 else
2225 {
2226 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2227 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2228
2229 SV *tmp = *src; *src = *dst; *dst = tmp;
2230 }
2231
1188MODULE = Coro::State PACKAGE = Coro 2232MODULE = Coro::State PACKAGE = Coro
1189 2233
1190BOOT: 2234BOOT:
1191{ 2235{
1192 int i; 2236 int i;
1193 2237
2238 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2239 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2240 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2241
2242 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2243 SvREADONLY_on (coro_current);
2244
1194 coro_stash = gv_stashpv ("Coro", TRUE); 2245 coro_stash = gv_stashpv ("Coro", TRUE);
1195 2246
1196 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2247 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1197 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2248 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1198 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2249 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1199 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2250 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1200 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2251 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1201 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2252 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1202 2253
1203 coro_current = get_sv ("Coro::current", FALSE);
1204 SvREADONLY_on (coro_current);
1205
1206 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2254 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1207 coro_ready[i] = newAV (); 2255 coro_ready[i] = newAV ();
1208 2256
1209 { 2257 {
1210 SV *sv = perl_get_sv("Coro::API", 1); 2258 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1211 2259
1212 coroapi.schedule = api_schedule; 2260 coroapi.schedule = api_schedule;
1213 coroapi.save = api_save;
1214 coroapi.cede = api_cede; 2261 coroapi.cede = api_cede;
2262 coroapi.cede_notself = api_cede_notself;
1215 coroapi.ready = api_ready; 2263 coroapi.ready = api_ready;
1216 coroapi.is_ready = api_is_ready; 2264 coroapi.is_ready = api_is_ready;
1217 coroapi.nready = &coro_nready; 2265 coroapi.nready = &coro_nready;
1218 coroapi.current = coro_current; 2266 coroapi.current = coro_current;
1219 2267
1220 GCoroAPI = &coroapi; 2268 GCoroAPI = &coroapi;
1221 sv_setiv (sv, (IV)&coroapi); 2269 sv_setiv (sv, (IV)&coroapi);
1222 SvREADONLY_on (sv); 2270 SvREADONLY_on (sv);
1223 } 2271 }
… …
1226void 2274void
1227_set_current (SV *current) 2275_set_current (SV *current)
1228 PROTOTYPE: $ 2276 PROTOTYPE: $
1229 CODE: 2277 CODE:
1230 SvREFCNT_dec (SvRV (coro_current)); 2278 SvREFCNT_dec (SvRV (coro_current));
1231 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2279 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2280
2281void
2282_set_readyhook (SV *hook)
2283 PROTOTYPE: $
2284 CODE:
2285 LOCK;
2286 SvREFCNT_dec (coro_readyhook);
2287 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2288 UNLOCK;
1232 2289
1233int 2290int
1234prio (Coro::State coro, int newprio = 0) 2291prio (Coro::State coro, int newprio = 0)
1235 ALIAS: 2292 ALIAS:
1236 nice = 1 2293 nice = 1
… …
1239 RETVAL = coro->prio; 2296 RETVAL = coro->prio;
1240 2297
1241 if (items > 1) 2298 if (items > 1)
1242 { 2299 {
1243 if (ix) 2300 if (ix)
1244 newprio += coro->prio; 2301 newprio = coro->prio - newprio;
1245 2302
1246 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 2303 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1247 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 2304 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1248 2305
1249 coro->prio = newprio; 2306 coro->prio = newprio;
1250 } 2307 }
1251} 2308}
2309 OUTPUT:
2310 RETVAL
1252 2311
1253SV * 2312SV *
1254ready (SV *self) 2313ready (SV *self)
1255 PROTOTYPE: $ 2314 PROTOTYPE: $
1256 CODE: 2315 CODE:
1257 RETVAL = boolSV (api_ready (self)); 2316 RETVAL = boolSV (api_ready (self));
1258 OUTPUT: 2317 OUTPUT:
1259 RETVAL 2318 RETVAL
1260 2319
1261SV *
1262is_ready (SV *self)
1263 PROTOTYPE: $
1264 CODE:
1265 RETVAL = boolSV (api_is_ready (self));
1266 OUTPUT:
1267 RETVAL
1268
1269int 2320int
1270nready (...) 2321nready (...)
1271 PROTOTYPE: 2322 PROTOTYPE:
1272 CODE: 2323 CODE:
1273 RETVAL = coro_nready; 2324 RETVAL = coro_nready;
1274 OUTPUT: 2325 OUTPUT:
1275 RETVAL 2326 RETVAL
1276 2327
2328# for async_pool speedup
2329void
2330_pool_1 (SV *cb)
2331 CODE:
2332{
2333 struct coro *coro = SvSTATE (coro_current);
2334 HV *hv = (HV *)SvRV (coro_current);
2335 AV *defav = GvAV (PL_defgv);
2336 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2337 AV *invoke_av;
2338 int i, len;
2339
2340 if (!invoke)
2341 {
2342 SV *old = PL_diehook;
2343 PL_diehook = 0;
2344 SvREFCNT_dec (old);
2345 croak ("\3async_pool terminate\2\n");
2346 }
2347
2348 SvREFCNT_dec (coro->saved_deffh);
2349 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2350
2351 hv_store (hv, "desc", sizeof ("desc") - 1,
2352 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2353
2354 invoke_av = (AV *)SvRV (invoke);
2355 len = av_len (invoke_av);
2356
2357 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2358
2359 if (len > 0)
2360 {
2361 av_fill (defav, len - 1);
2362 for (i = 0; i < len; ++i)
2363 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2364 }
2365
2366 SvREFCNT_dec (invoke);
2367}
2368
2369void
2370_pool_2 (SV *cb)
2371 CODE:
2372{
2373 struct coro *coro = SvSTATE (coro_current);
2374
2375 sv_setsv (cb, &PL_sv_undef);
2376
2377 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2378 coro->saved_deffh = 0;
2379
2380 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2381 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2382 {
2383 SV *old = PL_diehook;
2384 PL_diehook = 0;
2385 SvREFCNT_dec (old);
2386 croak ("\3async_pool terminate\2\n");
2387 }
2388
2389 av_clear (GvAV (PL_defgv));
2390 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2391 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2392
2393 coro->prio = 0;
2394
2395 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2396 api_trace (coro_current, 0);
2397
2398 av_push (av_async_pool, newSVsv (coro_current));
2399}
2400
2401#if 0
2402
2403void
2404_generator_call (...)
2405 PROTOTYPE: @
2406 PPCODE:
2407 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2408 xxxx
2409 abort ();
2410
2411SV *
2412gensub (SV *sub, ...)
2413 PROTOTYPE: &;@
2414 CODE:
2415{
2416 struct coro *coro;
2417 MAGIC *mg;
2418 CV *xcv;
2419 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2420 int i;
2421
2422 CvGV (ncv) = CvGV (cv);
2423 CvFILE (ncv) = CvFILE (cv);
2424
2425 Newz (0, coro, 1, struct coro);
2426 coro->args = newAV ();
2427 coro->flags = CF_NEW;
2428
2429 av_extend (coro->args, items - 1);
2430 for (i = 1; i < items; i++)
2431 av_push (coro->args, newSVsv (ST (i)));
2432
2433 CvISXSUB_on (ncv);
2434 CvXSUBANY (ncv).any_ptr = (void *)coro;
2435
2436 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2437
2438 CvXSUB (ncv) = CvXSUB (xcv);
2439 CvANON_on (ncv);
2440
2441 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2442 RETVAL = newRV_noinc ((SV *)ncv);
2443}
2444 OUTPUT:
2445 RETVAL
2446
2447#endif
2448
2449
1277MODULE = Coro::State PACKAGE = Coro::AIO 2450MODULE = Coro::State PACKAGE = Coro::AIO
1278 2451
1279SV * 2452void
1280_get_state () 2453_get_state (SV *self)
1281 CODE: 2454 PPCODE:
1282{ 2455{
1283 struct io_state *data; 2456 AV *defav = GvAV (PL_defgv);
1284 2457 AV *av = newAV ();
2458 int i;
1285 RETVAL = newSV (sizeof (struct io_state)); 2459 SV *data_sv = newSV (sizeof (struct io_state));
1286 data = (struct io_state *)SvPVX (RETVAL); 2460 struct io_state *data = (struct io_state *)SvPVX (data_sv);
1287 SvCUR_set (RETVAL, sizeof (struct io_state)); 2461 SvCUR_set (data_sv, sizeof (struct io_state));
1288 SvPOK_only (RETVAL); 2462 SvPOK_only (data_sv);
1289 2463
1290 data->errorno = errno; 2464 data->errorno = errno;
1291 data->laststype = PL_laststype; 2465 data->laststype = PL_laststype;
1292 data->laststatval = PL_laststatval; 2466 data->laststatval = PL_laststatval;
1293 data->statcache = PL_statcache; 2467 data->statcache = PL_statcache;
2468
2469 av_extend (av, AvFILLp (defav) + 1 + 1);
2470
2471 for (i = 0; i <= AvFILLp (defav); ++i)
2472 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2473
2474 av_push (av, data_sv);
2475
2476 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2477
2478 api_ready (self);
1294} 2479}
1295 OUTPUT:
1296 RETVAL
1297 2480
1298void 2481void
1299_set_state (char *data_) 2482_set_state (SV *state)
1300 PROTOTYPE: $ 2483 PROTOTYPE: $
1301 CODE: 2484 PPCODE:
1302{ 2485{
1303 struct io_state *data = (void *)data_; 2486 AV *av = (AV *)SvRV (state);
2487 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2488 int i;
1304 2489
1305 errno = data->errorno; 2490 errno = data->errorno;
1306 PL_laststype = data->laststype; 2491 PL_laststype = data->laststype;
1307 PL_laststatval = data->laststatval; 2492 PL_laststatval = data->laststatval;
1308 PL_statcache = data->statcache; 2493 PL_statcache = data->statcache;
1309}
1310 2494
2495 EXTEND (SP, AvFILLp (av));
2496 for (i = 0; i < AvFILLp (av); ++i)
2497 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2498}
2499
2500
2501MODULE = Coro::State PACKAGE = Coro::AnyEvent
2502
2503BOOT:
2504 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2505
2506SV *
2507_schedule (...)
2508 PROTOTYPE: @
2509 CODE:
2510{
2511 static int incede;
2512
2513 api_cede_notself ();
2514
2515 ++incede;
2516 while (coro_nready >= incede && api_cede ())
2517 ;
2518
2519 sv_setsv (sv_activity, &PL_sv_undef);
2520 if (coro_nready >= incede)
2521 {
2522 PUSHMARK (SP);
2523 PUTBACK;
2524 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2525 SPAGAIN;
2526 }
2527
2528 --incede;
2529}
2530
2531
2532MODULE = Coro::State PACKAGE = PerlIO::cede
2533
2534BOOT:
2535 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2536

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