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Comparing Coro/Coro/State.xs (file contents):
Revision 1.113 by root, Thu Nov 30 20:54:24 2006 UTC vs.
Revision 1.251 by root, Thu Oct 30 09:44:31 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2
3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
2 5
3#include "EXTERN.h" 6#include "EXTERN.h"
4#include "perl.h" 7#include "perl.h"
5#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
6 10
7#include "patchlevel.h" 11#include "patchlevel.h"
8
9#if USE_VALGRIND
10# include <valgrind/valgrind.h>
11#endif
12
13#define PERL_VERSION_ATLEAST(a,b,c) \
14 (PERL_REVISION > (a) \
15 || (PERL_REVISION == (a) \
16 && (PERL_VERSION > (b) \
17 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
18
19#if !PERL_VERSION_ATLEAST (5,6,0)
20# ifndef PL_ppaddr
21# define PL_ppaddr ppaddr
22# endif
23# ifndef call_sv
24# define call_sv perl_call_sv
25# endif
26# ifndef get_sv
27# define get_sv perl_get_sv
28# endif
29# ifndef get_cv
30# define get_cv perl_get_cv
31# endif
32# ifndef IS_PADGV
33# define IS_PADGV(v) 0
34# endif
35# ifndef IS_PADCONST
36# define IS_PADCONST(v) 0
37# endif
38#endif
39 12
40#include <stdio.h> 13#include <stdio.h>
41#include <errno.h> 14#include <errno.h>
15#include <assert.h>
42 16
43#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 17#ifdef WIN32
44# undef STACKGUARD 18# undef setjmp
45#endif 19# undef longjmp
46 20# undef _exit
47#ifndef STACKGUARD 21# define setjmp _setjmp // deep magic, don't ask
48# define STACKGUARD 0 22#else
23# include <inttypes.h> /* most portable stdint.h */
49#endif 24#endif
50 25
51#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
52# include <unistd.h> 27# include <unistd.h>
53# include <sys/mman.h> 28# include <sys/mman.h>
… …
69#else 44#else
70# define PAGESIZE 0 45# define PAGESIZE 0
71# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
72#endif 47#endif
73 48
74/* The next macro should declare a variable stacklevel that contains and approximation 49#if CORO_USE_VALGRIND
75 * to the current C stack pointer. Its property is that it changes with each call 50# include <valgrind/valgrind.h>
76 * and should be unique. */ 51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif
55
56/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8
58
59#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
64
65#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr
68# endif
69# ifndef call_sv
70# define call_sv perl_call_sv
71# endif
72# ifndef get_sv
73# define get_sv perl_get_sv
74# endif
75# ifndef get_cv
76# define get_cv perl_get_cv
77# endif
78# ifndef IS_PADGV
79# define IS_PADGV(v) 0
80# endif
81# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0
83# endif
84#endif
85
86/* 5.11 */
87#ifndef CxHASARGS
88# define CxHASARGS(cx) (cx)->blk_sub.hasargs
89#endif
90
91/* 5.10.0 */
92#ifndef SvREFCNT_inc_NN
93# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
94#endif
95
96/* 5.8.8 */
97#ifndef GV_NOTQUAL
98# define GV_NOTQUAL 0
99#endif
100#ifndef newSV
101# define newSV(l) NEWSV(0,l)
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD
111#endif
112
113#ifndef CORO_STACKGUARD
114# define CORO_STACKGUARD 0
115#endif
116
117/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif
121
122/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */
77#define dSTACKLEVEL int stacklevel 124#define dSTACKLEVEL volatile char stacklevel
78#define STACKLEVEL ((void *)&stacklevel) 125#define STACKLEVEL ((void *)&stacklevel)
79 126
80#define IN_DESTRUCT (PL_main_cv == Nullcv) 127#define IN_DESTRUCT (PL_main_cv == Nullcv)
81 128
82#if __GNUC__ >= 3 129#if __GNUC__ >= 3
83# define attribute(x) __attribute__(x) 130# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value))
84#else 133#else
85# define attribute(x) 134# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr)
86#endif 137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
87 141
88#define NOINLINE attribute ((noinline)) 142#define NOINLINE attribute ((noinline))
89 143
90#include "CoroAPI.h" 144#include "CoroAPI.h"
91
92#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
93 145
94#ifdef USE_ITHREADS 146#ifdef USE_ITHREADS
95static perl_mutex coro_mutex; 147static perl_mutex coro_mutex;
96# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 148# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
97# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 149# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
98#else 150#else
99# define LOCK (void)0 151# define LOCK (void)0
100# define UNLOCK (void)0 152# define UNLOCK (void)0
101#endif 153#endif
102 154
155/* helper storage struct for Coro::AIO */
156struct io_state
157{
158 AV *res;
159 int errorno;
160 I32 laststype;
161 int laststatval;
162 Stat_t statcache;
163};
164
165static double (*nvtime)(); /* so why doesn't it take void? */
166
167static size_t coro_stacksize = CORO_STACKSIZE;
103static struct CoroAPI coroapi; 168static struct CoroAPI coroapi;
104static AV *main_mainstack; /* used to differentiate between $main and others */ 169static AV *main_mainstack; /* used to differentiate between $main and others */
170static JMPENV *main_top_env;
105static HV *coro_state_stash, *coro_stash; 171static HV *coro_state_stash, *coro_stash;
106static SV *coro_mortal; /* will be freed after next transfer */ 172static volatile SV *coro_mortal; /* will be freed after next transfer */
173
174static GV *irsgv; /* $/ */
175static GV *stdoutgv; /* *STDOUT */
176static SV *rv_diehook;
177static SV *rv_warnhook;
178static HV *hv_sig; /* %SIG */
179
180/* async_pool helper stuff */
181static SV *sv_pool_rss;
182static SV *sv_pool_size;
183static AV *av_async_pool;
184
185/* Coro::AnyEvent */
186static SV *sv_activity;
107 187
108static struct coro_cctx *cctx_first; 188static struct coro_cctx *cctx_first;
109static int cctx_count, cctx_idle; 189static int cctx_count, cctx_idle;
190
191enum {
192 CC_MAPPED = 0x01,
193 CC_NOREUSE = 0x02, /* throw this away after tracing */
194 CC_TRACE = 0x04,
195 CC_TRACE_SUB = 0x08, /* trace sub calls */
196 CC_TRACE_LINE = 0x10, /* trace each statement */
197 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
198};
110 199
111/* this is a structure representing a c-level coroutine */ 200/* this is a structure representing a c-level coroutine */
112typedef struct coro_cctx { 201typedef struct coro_cctx {
113 struct coro_cctx *next; 202 struct coro_cctx *next;
114 203
115 /* the stack */ 204 /* the stack */
116 void *sptr; 205 void *sptr;
117 long ssize; /* positive == mmap, otherwise malloc */ 206 size_t ssize;
118 207
119 /* cpu state */ 208 /* cpu state */
120 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
121 JMPENV *top_env; 211 JMPENV *top_env;
122 coro_context cctx; 212 coro_context cctx;
123 213
124 int inuse;
125
126#if USE_VALGRIND 214#if CORO_USE_VALGRIND
127 int valgrind_id; 215 int valgrind_id;
128#endif 216#endif
217 unsigned char flags;
129} coro_cctx; 218} coro_cctx;
130 219
131enum { 220enum {
132 CF_RUNNING, /* coroutine is running */ 221 CF_RUNNING = 0x0001, /* coroutine is running */
133 CF_READY, /* coroutine is ready */ 222 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
134}; 225};
226
227/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct {
229 SV *defsv;
230 AV *defav;
231 SV *errsv;
232 SV *irsgv;
233#define VAR(name,type) type name;
234# include "state.h"
235#undef VAR
236} perl_slots;
237
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
135 239
136/* this is a structure representing a perl-level coroutine */ 240/* this is a structure representing a perl-level coroutine */
137struct coro { 241struct coro {
138 /* the c coroutine allocated to this perl coroutine, if any */ 242 /* the c coroutine allocated to this perl coroutine, if any */
139 coro_cctx *cctx; 243 coro_cctx *cctx;
140 244
245 /* process data */
246 AV *mainstack;
247 perl_slots *slot; /* basically the saved sp */
248
141 /* data associated with this coroutine (initial args) */ 249 AV *args; /* data associated with this coroutine (initial args) */
142 AV *args; 250 int refcnt; /* coroutines are refcounted, yes */
143 int refcnt; 251 int flags; /* CF_ flags */
144 int flags; 252 HV *hv; /* the perl hash associated with this coro, if any */
145 253
146 /* optionally saved, might be zero */ 254 /* statistics */
147 AV *defav; 255 int usecount; /* number of transfers to this coro */
148 SV *defsv;
149 SV *errsv;
150
151#define VAR(name,type) type name;
152# include "state.h"
153#undef VAR
154 256
155 /* coro process data */ 257 /* coro process data */
156 int prio; 258 int prio;
259 SV *throw; /* exception to be thrown */
260
261 /* async_pool */
262 SV *saved_deffh;
263
264 /* linked list */
265 struct coro *next, *prev;
157}; 266};
158 267
159typedef struct coro *Coro__State; 268typedef struct coro *Coro__State;
160typedef struct coro *Coro__State_or_hashref; 269typedef struct coro *Coro__State_or_hashref;
161 270
271/** Coro ********************************************************************/
272
273#define PRIO_MAX 3
274#define PRIO_HIGH 1
275#define PRIO_NORMAL 0
276#define PRIO_LOW -1
277#define PRIO_IDLE -3
278#define PRIO_MIN -4
279
280/* for Coro.pm */
281static SV *coro_current;
282static SV *coro_readyhook;
283static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
284static int coro_nready;
285static struct coro *coro_first;
286
287/** lowlevel stuff **********************************************************/
288
289static SV *
290coro_get_sv (pTHX_ const char *name, int create)
291{
292#if PERL_VERSION_ATLEAST (5,10,0)
293 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
294 get_sv (name, create);
295#endif
296 return get_sv (name, create);
297}
298
162static AV * 299static AV *
300coro_get_av (pTHX_ const char *name, int create)
301{
302#if PERL_VERSION_ATLEAST (5,10,0)
303 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
304 get_av (name, create);
305#endif
306 return get_av (name, create);
307}
308
309static HV *
310coro_get_hv (pTHX_ const char *name, int create)
311{
312#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_hv (name, create);
315#endif
316 return get_hv (name, create);
317}
318
319static AV *
163coro_clone_padlist (CV *cv) 320coro_clone_padlist (pTHX_ CV *cv)
164{ 321{
165 AV *padlist = CvPADLIST (cv); 322 AV *padlist = CvPADLIST (cv);
166 AV *newpadlist, *newpad; 323 AV *newpadlist, *newpad;
167 324
168 newpadlist = newAV (); 325 newpadlist = newAV ();
169 AvREAL_off (newpadlist); 326 AvREAL_off (newpadlist);
170#if PERL_VERSION_ATLEAST (5,9,0) 327#if PERL_VERSION_ATLEAST (5,10,0)
171 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 328 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
172#else 329#else
173 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 330 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
174#endif 331#endif
175 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 332 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
176 --AvFILLp (padlist); 333 --AvFILLp (padlist);
177 334
178 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 335 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
179 av_store (newpadlist, 1, (SV *)newpad); 336 av_store (newpadlist, 1, (SV *)newpad);
180 337
181 return newpadlist; 338 return newpadlist;
182} 339}
183 340
184static void 341static void
185free_padlist (AV *padlist) 342free_padlist (pTHX_ AV *padlist)
186{ 343{
187 /* may be during global destruction */ 344 /* may be during global destruction */
188 if (SvREFCNT (padlist)) 345 if (SvREFCNT (padlist))
189 { 346 {
190 I32 i = AvFILLp (padlist); 347 I32 i = AvFILLp (padlist);
… …
211 AV *padlist; 368 AV *padlist;
212 AV *av = (AV *)mg->mg_obj; 369 AV *av = (AV *)mg->mg_obj;
213 370
214 /* casting is fun. */ 371 /* casting is fun. */
215 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 372 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
216 free_padlist (padlist); 373 free_padlist (aTHX_ padlist);
217 374
218 SvREFCNT_dec (av); 375 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
219 376
220 return 0; 377 return 0;
221} 378}
222 379
223#define PERL_MAGIC_coro PERL_MAGIC_ext 380#define CORO_MAGIC_type_cv PERL_MAGIC_ext
381#define CORO_MAGIC_type_state PERL_MAGIC_ext
224 382
225static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 383static MGVTBL coro_cv_vtbl = {
384 0, 0, 0, 0,
385 coro_cv_free
386};
226 387
227#define CORO_MAGIC(cv) \ 388#define CORO_MAGIC(sv,type) \
228 SvMAGIC (cv) \ 389 SvMAGIC (sv) \
229 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 390 ? SvMAGIC (sv)->mg_type == type \
230 ? SvMAGIC (cv) \ 391 ? SvMAGIC (sv) \
231 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 392 : mg_find (sv, type) \
232 : 0 393 : 0
394
395#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
396#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
397
398static struct coro *
399SvSTATE_ (pTHX_ SV *coro)
400{
401 HV *stash;
402 MAGIC *mg;
403
404 if (SvROK (coro))
405 coro = SvRV (coro);
406
407 if (expect_false (SvTYPE (coro) != SVt_PVHV))
408 croak ("Coro::State object required");
409
410 stash = SvSTASH (coro);
411 if (expect_false (stash != coro_stash && stash != coro_state_stash))
412 {
413 /* very slow, but rare, check */
414 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
415 croak ("Coro::State object required");
416 }
417
418 mg = CORO_MAGIC_state (coro);
419 return (struct coro *)mg->mg_ptr;
420}
421
422#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
233 423
234/* the next two functions merely cache the padlists */ 424/* the next two functions merely cache the padlists */
235static void 425static void
236get_padlist (CV *cv) 426get_padlist (pTHX_ CV *cv)
237{ 427{
238 MAGIC *mg = CORO_MAGIC (cv); 428 MAGIC *mg = CORO_MAGIC_cv (cv);
239 AV *av; 429 AV *av;
240 430
241 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 431 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
242 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 432 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
243 else 433 else
244 { 434 {
245#if 0 435#if CORO_PREFER_PERL_FUNCTIONS
246 /* this is probably cleaner, but also slower? */ 436 /* this is probably cleaner? but also slower! */
437 /* in practise, it seems to be less stable */
247 CV *cp = Perl_cv_clone (cv); 438 CV *cp = Perl_cv_clone (cv);
248 CvPADLIST (cv) = CvPADLIST (cp); 439 CvPADLIST (cv) = CvPADLIST (cp);
249 CvPADLIST (cp) = 0; 440 CvPADLIST (cp) = 0;
250 SvREFCNT_dec (cp); 441 SvREFCNT_dec (cp);
251#else 442#else
252 CvPADLIST (cv) = coro_clone_padlist (cv); 443 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
253#endif 444#endif
254 } 445 }
255} 446}
256 447
257static void 448static void
258put_padlist (CV *cv) 449put_padlist (pTHX_ CV *cv)
259{ 450{
260 MAGIC *mg = CORO_MAGIC (cv); 451 MAGIC *mg = CORO_MAGIC_cv (cv);
261 AV *av; 452 AV *av;
262 453
263 if (!mg) 454 if (expect_false (!mg))
264 { 455 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
265 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
266 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
267 mg->mg_virtual = &vtbl_coro;
268 mg->mg_obj = (SV *)newAV ();
269 }
270 456
271 av = (AV *)mg->mg_obj; 457 av = (AV *)mg->mg_obj;
272 458
273 if (AvFILLp (av) >= AvMAX (av)) 459 if (expect_false (AvFILLp (av) >= AvMAX (av)))
274 av_extend (av, AvMAX (av) + 1); 460 av_extend (av, AvMAX (av) + 1);
275 461
276 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 462 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
277} 463}
278 464
279#define SB do { 465/** load & save, init *******************************************************/
280#define SE } while (0)
281
282#define LOAD(state) load_state((state));
283#define SAVE(state,flags) save_state((state),(flags));
284
285#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
286 466
287static void 467static void
288load_state(Coro__State c) 468load_perl (pTHX_ Coro__State c)
289{ 469{
470 perl_slots *slot = c->slot;
471 c->slot = 0;
472
473 PL_mainstack = c->mainstack;
474
475 GvSV (PL_defgv) = slot->defsv;
476 GvAV (PL_defgv) = slot->defav;
477 GvSV (PL_errgv) = slot->errsv;
478 GvSV (irsgv) = slot->irsgv;
479
290#define VAR(name,type) PL_ ## name = c->name; 480 #define VAR(name,type) PL_ ## name = slot->name;
291# include "state.h" 481 # include "state.h"
292#undef VAR 482 #undef VAR
293
294 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
295 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
296 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
297 483
298 { 484 {
299 dSP; 485 dSP;
486
300 CV *cv; 487 CV *cv;
301 488
302 /* now do the ugly restore mess */ 489 /* now do the ugly restore mess */
303 while ((cv = (CV *)POPs)) 490 while (expect_true (cv = (CV *)POPs))
304 { 491 {
305 put_padlist (cv); /* mark this padlist as available */ 492 put_padlist (aTHX_ cv); /* mark this padlist as available */
306 CvDEPTH (cv) = PTR2IV (POPs); 493 CvDEPTH (cv) = PTR2IV (POPs);
307 CvPADLIST (cv) = (AV *)POPs; 494 CvPADLIST (cv) = (AV *)POPs;
308 } 495 }
309 496
310 PUTBACK; 497 PUTBACK;
311 } 498 }
312} 499}
313 500
314static void 501static void
315save_state(Coro__State c, int flags) 502save_perl (pTHX_ Coro__State c)
316{ 503{
317 { 504 {
318 dSP; 505 dSP;
319 I32 cxix = cxstack_ix; 506 I32 cxix = cxstack_ix;
320 PERL_CONTEXT *ccstk = cxstack; 507 PERL_CONTEXT *ccstk = cxstack;
… …
323 /* 510 /*
324 * the worst thing you can imagine happens first - we have to save 511 * the worst thing you can imagine happens first - we have to save
325 * (and reinitialize) all cv's in the whole callchain :( 512 * (and reinitialize) all cv's in the whole callchain :(
326 */ 513 */
327 514
328 PUSHs (Nullsv); 515 XPUSHs (Nullsv);
329 /* this loop was inspired by pp_caller */ 516 /* this loop was inspired by pp_caller */
330 for (;;) 517 for (;;)
331 { 518 {
332 while (cxix >= 0) 519 while (expect_true (cxix >= 0))
333 { 520 {
334 PERL_CONTEXT *cx = &ccstk[cxix--]; 521 PERL_CONTEXT *cx = &ccstk[cxix--];
335 522
336 if (CxTYPE(cx) == CXt_SUB) 523 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
337 { 524 {
338 CV *cv = cx->blk_sub.cv; 525 CV *cv = cx->blk_sub.cv;
339 526
340 if (CvDEPTH (cv)) 527 if (expect_true (CvDEPTH (cv)))
341 { 528 {
342 EXTEND (SP, 3); 529 EXTEND (SP, 3);
343
344 PUSHs ((SV *)CvPADLIST(cv)); 530 PUSHs ((SV *)CvPADLIST (cv));
345 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 531 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
346 PUSHs ((SV *)cv); 532 PUSHs ((SV *)cv);
347 533
348 CvDEPTH (cv) = 0; 534 CvDEPTH (cv) = 0;
349 get_padlist (cv); 535 get_padlist (aTHX_ cv);
350 } 536 }
351 } 537 }
352#ifdef CXt_FORMAT
353 else if (CxTYPE(cx) == CXt_FORMAT)
354 {
355 /* I never used formats, so how should I know how these are implemented? */
356 /* my bold guess is as a simple, plain sub... */
357 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
358 }
359#endif
360 } 538 }
361 539
362 if (top_si->si_type == PERLSI_MAIN) 540 if (expect_true (top_si->si_type == PERLSI_MAIN))
363 break; 541 break;
364 542
365 top_si = top_si->si_prev; 543 top_si = top_si->si_prev;
366 ccstk = top_si->si_cxstack; 544 ccstk = top_si->si_cxstack;
367 cxix = top_si->si_cxix; 545 cxix = top_si->si_cxix;
368 } 546 }
369 547
370 PUTBACK; 548 PUTBACK;
371 } 549 }
372 550
373 c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 551 /* allocate some space on the context stack for our purposes */
374 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 552 /* we manually unroll here, as usually 2 slots is enough */
375 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 553 if (SLOT_COUNT >= 1) CXINC;
554 if (SLOT_COUNT >= 2) CXINC;
555 if (SLOT_COUNT >= 3) CXINC;
556 {
557 int i;
558 for (i = 3; i < SLOT_COUNT; ++i)
559 CXINC;
560 }
561 cxstack_ix -= SLOT_COUNT; /* undo allocation */
376 562
563 c->mainstack = PL_mainstack;
564
565 {
566 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
567
568 slot->defav = GvAV (PL_defgv);
569 slot->defsv = DEFSV;
570 slot->errsv = ERRSV;
571 slot->irsgv = GvSV (irsgv);
572
377#define VAR(name,type)c->name = PL_ ## name; 573 #define VAR(name,type) slot->name = PL_ ## name;
378# include "state.h" 574 # include "state.h"
379#undef VAR 575 #undef VAR
576 }
380} 577}
381 578
382/* 579/*
383 * allocate various perl stacks. This is an exact copy 580 * allocate various perl stacks. This is an exact copy
384 * of perl.c:init_stacks, except that it uses less memory 581 * of perl.c:init_stacks, except that it uses less memory
385 * on the (sometimes correct) assumption that coroutines do 582 * on the (sometimes correct) assumption that coroutines do
386 * not usually need a lot of stackspace. 583 * not usually need a lot of stackspace.
387 */ 584 */
585#if CORO_PREFER_PERL_FUNCTIONS
586# define coro_init_stacks init_stacks
587#else
388static void 588static void
389coro_init_stacks () 589coro_init_stacks (pTHX)
390{ 590{
391 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); 591 PL_curstackinfo = new_stackinfo(32, 8);
392 PL_curstackinfo->si_type = PERLSI_MAIN; 592 PL_curstackinfo->si_type = PERLSI_MAIN;
393 PL_curstack = PL_curstackinfo->si_stack; 593 PL_curstack = PL_curstackinfo->si_stack;
394 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 594 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
395 595
396 PL_stack_base = AvARRAY(PL_curstack); 596 PL_stack_base = AvARRAY(PL_curstack);
397 PL_stack_sp = PL_stack_base; 597 PL_stack_sp = PL_stack_base;
398 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 598 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
399 599
400 New(50,PL_tmps_stack,96,SV*); 600 New(50,PL_tmps_stack,32,SV*);
401 PL_tmps_floor = -1; 601 PL_tmps_floor = -1;
402 PL_tmps_ix = -1; 602 PL_tmps_ix = -1;
403 PL_tmps_max = 96; 603 PL_tmps_max = 32;
404 604
405 New(54,PL_markstack,16,I32); 605 New(54,PL_markstack,16,I32);
406 PL_markstack_ptr = PL_markstack; 606 PL_markstack_ptr = PL_markstack;
407 PL_markstack_max = PL_markstack + 16; 607 PL_markstack_max = PL_markstack + 16;
408 608
409#ifdef SET_MARK_OFFSET 609#ifdef SET_MARK_OFFSET
410 SET_MARK_OFFSET; 610 SET_MARK_OFFSET;
411#endif 611#endif
412 612
413 New(54,PL_scopestack,16,I32); 613 New(54,PL_scopestack,8,I32);
414 PL_scopestack_ix = 0; 614 PL_scopestack_ix = 0;
415 PL_scopestack_max = 16; 615 PL_scopestack_max = 8;
416 616
417 New(54,PL_savestack,96,ANY); 617 New(54,PL_savestack,24,ANY);
418 PL_savestack_ix = 0; 618 PL_savestack_ix = 0;
419 PL_savestack_max = 96; 619 PL_savestack_max = 24;
420 620
421#if !PERL_VERSION_ATLEAST (5,9,0) 621#if !PERL_VERSION_ATLEAST (5,10,0)
422 New(54,PL_retstack,8,OP*); 622 New(54,PL_retstack,4,OP*);
423 PL_retstack_ix = 0; 623 PL_retstack_ix = 0;
424 PL_retstack_max = 8; 624 PL_retstack_max = 4;
425#endif 625#endif
426} 626}
627#endif
427 628
428/* 629/*
429 * destroy the stacks, the callchain etc... 630 * destroy the stacks, the callchain etc...
430 */ 631 */
431static void 632static void
432coro_destroy_stacks () 633coro_destroy_stacks (pTHX)
433{ 634{
434 if (!IN_DESTRUCT)
435 {
436 /* is this ugly, I ask? */
437 LEAVE_SCOPE (0);
438
439 /* sure it is, but more important: is it correct?? :/ */
440 FREETMPS;
441
442 /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
443 }
444
445 while (PL_curstackinfo->si_next) 635 while (PL_curstackinfo->si_next)
446 PL_curstackinfo = PL_curstackinfo->si_next; 636 PL_curstackinfo = PL_curstackinfo->si_next;
447 637
448 while (PL_curstackinfo) 638 while (PL_curstackinfo)
449 { 639 {
450 PERL_SI *p = PL_curstackinfo->si_prev; 640 PERL_SI *p = PL_curstackinfo->si_prev;
451 641
452 { /*D*//*remove*/
453 dSP;
454 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
455 PUTBACK; /* possibly superfluous */
456 }
457
458 if (!IN_DESTRUCT) 642 if (!IN_DESTRUCT)
459 {
460 dounwind (-1);/*D*//*remove*/
461 SvREFCNT_dec (PL_curstackinfo->si_stack); 643 SvREFCNT_dec (PL_curstackinfo->si_stack);
462 }
463 644
464 Safefree (PL_curstackinfo->si_cxstack); 645 Safefree (PL_curstackinfo->si_cxstack);
465 Safefree (PL_curstackinfo); 646 Safefree (PL_curstackinfo);
466 PL_curstackinfo = p; 647 PL_curstackinfo = p;
467 } 648 }
468 649
469 Safefree (PL_tmps_stack); 650 Safefree (PL_tmps_stack);
470 Safefree (PL_markstack); 651 Safefree (PL_markstack);
471 Safefree (PL_scopestack); 652 Safefree (PL_scopestack);
472 Safefree (PL_savestack); 653 Safefree (PL_savestack);
473#if !PERL_VERSION_ATLEAST (5,9,0) 654#if !PERL_VERSION_ATLEAST (5,10,0)
474 Safefree (PL_retstack); 655 Safefree (PL_retstack);
475#endif 656#endif
476} 657}
477 658
659static size_t
660coro_rss (pTHX_ struct coro *coro)
661{
662 size_t rss = sizeof (*coro);
663
664 if (coro->mainstack)
665 {
666 perl_slots tmp_slot;
667 perl_slots *slot;
668
669 if (coro->flags & CF_RUNNING)
670 {
671 slot = &tmp_slot;
672
673 #define VAR(name,type) slot->name = PL_ ## name;
674 # include "state.h"
675 #undef VAR
676 }
677 else
678 slot = coro->slot;
679
680 if (slot)
681 {
682 rss += sizeof (slot->curstackinfo);
683 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
684 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
685 rss += slot->tmps_max * sizeof (SV *);
686 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
687 rss += slot->scopestack_max * sizeof (I32);
688 rss += slot->savestack_max * sizeof (ANY);
689
690#if !PERL_VERSION_ATLEAST (5,10,0)
691 rss += slot->retstack_max * sizeof (OP *);
692#endif
693 }
694 }
695
696 return rss;
697}
698
699/** coroutine stack handling ************************************************/
700
701static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
702static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
703static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
704
705/* apparently < 5.8.8 */
706#ifndef MgPV_nolen_const
707#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
708 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
709 (const char*)(mg)->mg_ptr)
710#endif
711
712/*
713 * This overrides the default magic get method of %SIG elements.
714 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
715 * and instead of tryign to save and restore the hash elements, we just provide
716 * readback here.
717 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
718 * not expecting this to actually change the hook. This is a potential problem
719 * when a schedule happens then, but we ignore this.
720 */
721static int
722coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
723{
724 const char *s = MgPV_nolen_const (mg);
725
726 if (*s == '_')
727 {
728 SV **svp = 0;
729
730 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
731 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
732
733 if (svp)
734 {
735 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
736 return 0;
737 }
738 }
739
740 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
741}
742
743static int
744coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
745{
746 const char *s = MgPV_nolen_const (mg);
747
748 if (*s == '_')
749 {
750 SV **svp = 0;
751
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754
755 if (svp)
756 {
757 SV *old = *svp;
758 *svp = 0;
759 SvREFCNT_dec (old);
760 return 0;
761 }
762 }
763
764 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
765}
766
767static int
768coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
769{
770 const char *s = MgPV_nolen_const (mg);
771
772 if (*s == '_')
773 {
774 SV **svp = 0;
775
776 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
777 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
778
779 if (svp)
780 {
781 SV *old = *svp;
782 *svp = newSVsv (sv);
783 SvREFCNT_dec (old);
784 return 0;
785 }
786 }
787
788 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
789}
790
478static void 791static void
479setup_coro (struct coro *coro) 792coro_setup (pTHX_ struct coro *coro)
480{ 793{
481 /* 794 /*
482 * emulate part of the perl startup here. 795 * emulate part of the perl startup here.
483 */ 796 */
484
485 coro_init_stacks (); 797 coro_init_stacks (aTHX);
486 798
799 PL_runops = RUNOPS_DEFAULT;
800 PL_curcop = &PL_compiling;
801 PL_in_eval = EVAL_NULL;
487 PL_curcop = 0; 802 PL_comppad = 0;
488 PL_in_eval = 0;
489 PL_curpm = 0; 803 PL_curpm = 0;
804 PL_curpad = 0;
805 PL_localizing = 0;
806 PL_dirty = 0;
807 PL_restartop = 0;
808#if PERL_VERSION_ATLEAST (5,10,0)
809 PL_parser = 0;
810#endif
811
812 /* recreate the die/warn hooks */
813 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
814 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
815
816 GvSV (PL_defgv) = newSV (0);
817 GvAV (PL_defgv) = coro->args; coro->args = 0;
818 GvSV (PL_errgv) = newSV (0);
819 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
820 PL_rs = newSVsv (GvSV (irsgv));
821 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
490 822
491 { 823 {
492 dSP; 824 dSP;
493 LOGOP myop; 825 LOGOP myop;
494 826
495 /* I have no idea why this is needed, but it is */
496 PUSHMARK (SP);
497
498 SvREFCNT_dec (GvAV (PL_defgv));
499 GvAV (PL_defgv) = coro->args; coro->args = 0;
500
501 Zero (&myop, 1, LOGOP); 827 Zero (&myop, 1, LOGOP);
502 myop.op_next = Nullop; 828 myop.op_next = Nullop;
503 myop.op_flags = OPf_WANT_VOID; 829 myop.op_flags = OPf_WANT_VOID;
504 830
831 PUSHMARK (SP);
832 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
833 PUTBACK;
505 PL_op = (OP *)&myop; 834 PL_op = (OP *)&myop;
506
507 PUSHMARK (SP);
508 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
509 PUTBACK;
510 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
511 SPAGAIN; 836 SPAGAIN;
512
513 ENTER; /* necessary e.g. for dounwind */
514 } 837 }
838
839 /* this newly created coroutine might be run on an existing cctx which most
840 * likely was suspended in set_stacklevel, called from entersub.
841 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
842 * so we ENTER here for symmetry
843 */
844 ENTER;
515} 845}
516 846
517static void 847static void
848coro_destroy (pTHX_ struct coro *coro)
849{
850 if (!IN_DESTRUCT)
851 {
852 /* restore all saved variables and stuff */
853 LEAVE_SCOPE (0);
854 assert (PL_tmps_floor == -1);
855
856 /* free all temporaries */
857 FREETMPS;
858 assert (PL_tmps_ix == -1);
859
860 /* unwind all extra stacks */
861 POPSTACK_TO (PL_mainstack);
862
863 /* unwind main stack */
864 dounwind (-1);
865 }
866
867 SvREFCNT_dec (GvSV (PL_defgv));
868 SvREFCNT_dec (GvAV (PL_defgv));
869 SvREFCNT_dec (GvSV (PL_errgv));
870 SvREFCNT_dec (PL_defoutgv);
871 SvREFCNT_dec (PL_rs);
872 SvREFCNT_dec (GvSV (irsgv));
873
874 SvREFCNT_dec (PL_diehook);
875 SvREFCNT_dec (PL_warnhook);
876
877 SvREFCNT_dec (coro->saved_deffh);
878 SvREFCNT_dec (coro->throw);
879
880 coro_destroy_stacks (aTHX);
881}
882
883static void
518free_coro_mortal () 884free_coro_mortal (pTHX)
519{ 885{
520 if (coro_mortal) 886 if (expect_true (coro_mortal))
521 { 887 {
522 SvREFCNT_dec (coro_mortal); 888 SvREFCNT_dec (coro_mortal);
523 coro_mortal = 0; 889 coro_mortal = 0;
524 } 890 }
525} 891}
526 892
893static int
894runops_trace (pTHX)
895{
896 COP *oldcop = 0;
897 int oldcxix = -2;
898 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
899 coro_cctx *cctx = coro->cctx;
900
901 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
902 {
903 PERL_ASYNC_CHECK ();
904
905 if (cctx->flags & CC_TRACE_ALL)
906 {
907 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
908 {
909 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
910 SV **bot, **top;
911 AV *av = newAV (); /* return values */
912 SV **cb;
913 dSP;
914
915 GV *gv = CvGV (cx->blk_sub.cv);
916 SV *fullname = sv_2mortal (newSV (0));
917 if (isGV (gv))
918 gv_efullname3 (fullname, gv, 0);
919
920 bot = PL_stack_base + cx->blk_oldsp + 1;
921 top = cx->blk_gimme == G_ARRAY ? SP + 1
922 : cx->blk_gimme == G_SCALAR ? bot + 1
923 : bot;
924
925 av_extend (av, top - bot);
926 while (bot < top)
927 av_push (av, SvREFCNT_inc_NN (*bot++));
928
929 PL_runops = RUNOPS_DEFAULT;
930 ENTER;
931 SAVETMPS;
932 EXTEND (SP, 3);
933 PUSHMARK (SP);
934 PUSHs (&PL_sv_no);
935 PUSHs (fullname);
936 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
937 PUTBACK;
938 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
939 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
940 SPAGAIN;
941 FREETMPS;
942 LEAVE;
943 PL_runops = runops_trace;
944 }
945
946 if (oldcop != PL_curcop)
947 {
948 oldcop = PL_curcop;
949
950 if (PL_curcop != &PL_compiling)
951 {
952 SV **cb;
953
954 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
955 {
956 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
957
958 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
959 {
960 runops_proc_t old_runops = PL_runops;
961 dSP;
962 GV *gv = CvGV (cx->blk_sub.cv);
963 SV *fullname = sv_2mortal (newSV (0));
964
965 if (isGV (gv))
966 gv_efullname3 (fullname, gv, 0);
967
968 PL_runops = RUNOPS_DEFAULT;
969 ENTER;
970 SAVETMPS;
971 EXTEND (SP, 3);
972 PUSHMARK (SP);
973 PUSHs (&PL_sv_yes);
974 PUSHs (fullname);
975 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
976 PUTBACK;
977 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
978 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
979 SPAGAIN;
980 FREETMPS;
981 LEAVE;
982 PL_runops = runops_trace;
983 }
984
985 oldcxix = cxstack_ix;
986 }
987
988 if (cctx->flags & CC_TRACE_LINE)
989 {
990 dSP;
991
992 PL_runops = RUNOPS_DEFAULT;
993 ENTER;
994 SAVETMPS;
995 EXTEND (SP, 3);
996 PL_runops = RUNOPS_DEFAULT;
997 PUSHMARK (SP);
998 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
999 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1000 PUTBACK;
1001 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1002 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1003 SPAGAIN;
1004 FREETMPS;
1005 LEAVE;
1006 PL_runops = runops_trace;
1007 }
1008 }
1009 }
1010 }
1011 }
1012
1013 TAINT_NOT;
1014 return 0;
1015}
1016
1017/* inject a fake call to Coro::State::_cctx_init into the execution */
1018/* _cctx_init should be careful, as it could be called at almost any time */
1019/* during execution of a perl program */
527static void NOINLINE 1020static void NOINLINE
528prepare_cctx (coro_cctx *cctx) 1021cctx_prepare (pTHX_ coro_cctx *cctx)
529{ 1022{
530 dSP; 1023 dSP;
531 LOGOP myop; 1024 LOGOP myop;
532 1025
1026 PL_top_env = &PL_start_env;
1027
1028 if (cctx->flags & CC_TRACE)
1029 PL_runops = runops_trace;
1030
533 Zero (&myop, 1, LOGOP); 1031 Zero (&myop, 1, LOGOP);
534 myop.op_next = PL_op; 1032 myop.op_next = PL_op;
535 myop.op_flags = OPf_WANT_VOID; 1033 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
536
537 sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
538 1034
539 PUSHMARK (SP); 1035 PUSHMARK (SP);
1036 EXTEND (SP, 2);
1037 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
540 XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1038 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
541 PUTBACK; 1039 PUTBACK;
1040 PL_op = (OP *)&myop;
542 PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); 1041 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
543 SPAGAIN; 1042 SPAGAIN;
544} 1043}
545 1044
1045/*
1046 * this is a _very_ stripped down perl interpreter ;)
1047 */
546static void 1048static void
547coro_run (void *arg) 1049cctx_run (void *arg)
548{ 1050{
1051 dTHX;
1052
549 /* coro_run is the alternative epilogue of transfer() */ 1053 /* cctx_run is the alternative tail of transfer(), so unlock here. */
550 UNLOCK; 1054 UNLOCK;
551 1055
1056 /* we now skip the entersub that lead to transfer() */
1057 PL_op = PL_op->op_next;
1058
1059 /* inject a fake subroutine call to cctx_init */
1060 cctx_prepare (aTHX_ (coro_cctx *)arg);
1061
1062 /* somebody or something will hit me for both perl_run and PL_restartop */
1063 PL_restartop = PL_op;
1064 perl_run (PL_curinterp);
1065
552 /* 1066 /*
553 * this is a _very_ stripped down perl interpreter ;) 1067 * If perl-run returns we assume exit() was being called or the coro
1068 * fell off the end, which seems to be the only valid (non-bug)
1069 * reason for perl_run to return. We try to exit by jumping to the
1070 * bootstrap-time "top" top_env, as we cannot restore the "main"
1071 * coroutine as Coro has no such concept
554 */ 1072 */
555 PL_top_env = &PL_start_env; 1073 PL_top_env = main_top_env;
556 1074 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
557 /* inject call to cctx_init */
558 prepare_cctx ((coro_cctx *)arg);
559
560 /* somebody will hit me for both perl_run and PL_restartop */
561 perl_run (PL_curinterp);
562
563 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
564 abort ();
565} 1075}
566 1076
567static coro_cctx * 1077static coro_cctx *
568cctx_new () 1078cctx_new ()
569{ 1079{
570 coro_cctx *cctx; 1080 coro_cctx *cctx;
1081 void *stack_start;
1082 size_t stack_size;
571 1083
572 ++cctx_count; 1084 ++cctx_count;
573 1085
574 New (0, cctx, 1, coro_cctx); 1086 Newz (0, cctx, 1, coro_cctx);
575 1087
576#if HAVE_MMAP 1088#if HAVE_MMAP
577
578 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1089 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
579 /* mmap suppsedly does allocate-on-write for us */ 1090 /* mmap supposedly does allocate-on-write for us */
580 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1091 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
581 1092
582 if (cctx->sptr == (void *)-1) 1093 if (cctx->sptr != (void *)-1)
583 {
584 perror ("FATAL: unable to mmap stack for coroutine");
585 _exit (EXIT_FAILURE);
586 } 1094 {
587
588# if STACKGUARD 1095# if CORO_STACKGUARD
589 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1096 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
590# endif 1097# endif
1098 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
1099 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1100 cctx->flags |= CC_MAPPED;
1101 }
1102 else
1103#endif
1104 {
1105 cctx->ssize = coro_stacksize * (long)sizeof (long);
1106 New (0, cctx->sptr, coro_stacksize, long);
591 1107
592#else
593
594 cctx->ssize = STACKSIZE * (long)sizeof (long);
595 New (0, cctx->sptr, STACKSIZE, long);
596
597 if (!cctx->sptr) 1108 if (!cctx->sptr)
598 { 1109 {
599 perror ("FATAL: unable to malloc stack for coroutine"); 1110 perror ("FATAL: unable to allocate stack for coroutine");
600 _exit (EXIT_FAILURE); 1111 _exit (EXIT_FAILURE);
601 } 1112 }
602 1113
603#endif 1114 stack_start = cctx->sptr;
1115 stack_size = cctx->ssize;
1116 }
604 1117
605#if USE_VALGRIND 1118 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
606 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1119 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
607 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
608 cctx->ssize + (char *)cctx->sptr
609 );
610#endif
611
612 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
613 1120
614 return cctx; 1121 return cctx;
615} 1122}
616 1123
617static void 1124static void
618cctx_free (coro_cctx *cctx) 1125cctx_destroy (coro_cctx *cctx)
619{ 1126{
620 if (!cctx) 1127 if (!cctx)
621 return; 1128 return;
622 1129
623 --cctx_count; 1130 --cctx_count;
624 1131
625#if USE_VALGRIND 1132#if CORO_USE_VALGRIND
626 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1133 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
627#endif 1134#endif
628 1135
629#if HAVE_MMAP 1136#if HAVE_MMAP
1137 if (cctx->flags & CC_MAPPED)
630 munmap (cctx->sptr, cctx->ssize); 1138 munmap (cctx->sptr, cctx->ssize);
631#else 1139 else
1140#endif
632 Safefree (cctx->sptr); 1141 Safefree (cctx->sptr);
633#endif
634 1142
635 Safefree (cctx); 1143 Safefree (cctx);
636} 1144}
637 1145
1146/* wether this cctx should be destructed */
1147#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1148
638static coro_cctx * 1149static coro_cctx *
639cctx_get () 1150cctx_get (pTHX)
640{ 1151{
641 coro_cctx *cctx; 1152 while (expect_true (cctx_first))
642
643 if (cctx_first)
644 { 1153 {
1154 coro_cctx *cctx = cctx_first;
1155 cctx_first = cctx->next;
645 --cctx_idle; 1156 --cctx_idle;
646 cctx = cctx_first; 1157
647 cctx_first = cctx->next; 1158 if (expect_true (!CCTX_EXPIRED (cctx)))
648 } 1159 return cctx;
649 else 1160
650 { 1161 cctx_destroy (cctx);
651 cctx = cctx_new ();
652 PL_op = PL_op->op_next;
653 } 1162 }
654 1163
655 return cctx; 1164 return cctx_new ();
656} 1165}
657 1166
658static void 1167static void
659cctx_put (coro_cctx *cctx) 1168cctx_put (coro_cctx *cctx)
660{ 1169{
1170 /* free another cctx if overlimit */
1171 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
1172 {
1173 coro_cctx *first = cctx_first;
1174 cctx_first = first->next;
1175 --cctx_idle;
1176
1177 cctx_destroy (first);
1178 }
1179
661 ++cctx_idle; 1180 ++cctx_idle;
662 cctx->next = cctx_first; 1181 cctx->next = cctx_first;
663 cctx_first = cctx; 1182 cctx_first = cctx;
664} 1183}
665 1184
666/* never call directly, always through the coro_state_transfer global variable */ 1185/** coroutine switching *****************************************************/
1186
1187static void
1188transfer_check (pTHX_ struct coro *prev, struct coro *next)
1189{
1190 if (expect_true (prev != next))
1191 {
1192 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1193 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1194
1195 if (expect_false (next->flags & CF_RUNNING))
1196 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1197
1198 if (expect_false (next->flags & CF_DESTROYED))
1199 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1200
1201#if !PERL_VERSION_ATLEAST (5,10,0)
1202 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1203 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1204#endif
1205 }
1206}
1207
1208/* always use the TRANSFER macro */
667static void NOINLINE 1209static void NOINLINE
668transfer (struct coro *prev, struct coro *next, int flags) 1210transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
669{ 1211{
670 dSTACKLEVEL; 1212 dSTACKLEVEL;
1213 static volatile int has_throw;
671 1214
672 /* sometimes transfer is only called to set idle_sp */ 1215 /* sometimes transfer is only called to set idle_sp */
673 if (flags == TRANSFER_SET_STACKLEVEL) 1216 if (expect_false (!next))
1217 {
674 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1218 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1219 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1220 }
675 else if (prev != next) 1221 else if (expect_true (prev != next))
676 { 1222 {
677 coro_cctx *prev__cctx; 1223 coro_cctx *prev__cctx;
678 1224
679 if (!prev->cctx) 1225 if (expect_false (prev->flags & CF_NEW))
680 { 1226 {
681 /* create a new empty context */ 1227 /* create a new empty context */
682 Newz (0, prev->cctx, 1, coro_cctx); 1228 Newz (0, prev->cctx, 1, coro_cctx);
683 prev->cctx->inuse = 1; 1229 prev->flags &= ~CF_NEW;
684 prev->flags |= CF_RUNNING; 1230 prev->flags |= CF_RUNNING;
685 } 1231 }
686
687 if (!prev->flags & CF_RUNNING)
688 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
689
690 if (next->flags & CF_RUNNING)
691 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
692 1232
693 prev->flags &= ~CF_RUNNING; 1233 prev->flags &= ~CF_RUNNING;
694 next->flags |= CF_RUNNING; 1234 next->flags |= CF_RUNNING;
695 1235
696 LOCK; 1236 LOCK;
697 1237
698 if (next->mainstack) 1238 /* first get rid of the old state */
1239 save_perl (aTHX_ prev);
1240
1241 if (expect_false (next->flags & CF_NEW))
699 { 1242 {
700 /* coroutine already started */ 1243 /* need to start coroutine */
701 SAVE (prev, flags); 1244 next->flags &= ~CF_NEW;
702 LOAD (next); 1245 /* setup coroutine call */
1246 coro_setup (aTHX_ next);
703 } 1247 }
704 else 1248 else
1249 load_perl (aTHX_ next);
1250
1251 prev__cctx = prev->cctx;
1252
1253 /* possibly "free" the cctx */
1254 if (expect_true (
1255 prev__cctx->idle_sp == STACKLEVEL
1256 && !(prev__cctx->flags & CC_TRACE)
1257 && !force_cctx
1258 ))
705 { 1259 {
706 /* need to start coroutine */ 1260 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
707 /* first get rid of the old state */ 1261 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
708 SAVE (prev, -1); 1262
709 /* setup coroutine call */ 1263 prev->cctx = 0;
710 setup_coro (next); 1264
711 /* need a new stack */ 1265 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
712 assert (!next->stack); 1266 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1267 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1268 if (!next->cctx)
1269 next->cctx = cctx_get (aTHX);
1270
1271 cctx_put (prev__cctx);
713 } 1272 }
714 1273
715 prev__cctx = prev->cctx; 1274 ++next->usecount;
716 1275
717 /* possibly "free" the cctx */ 1276 if (expect_true (!next->cctx))
718 if (prev__cctx->idle_sp == STACKLEVEL) 1277 next->cctx = cctx_get (aTHX);
1278
1279 has_throw = !!next->throw;
1280
1281 if (expect_false (prev__cctx != next->cctx))
719 { 1282 {
720 assert (PL_top_env == prev__cctx->top_env);
721
722 cctx_put (prev__cctx);
723 prev->cctx = 0;
724 }
725 else if (prev__cctx->idle_sp) //D
726 fprintf (stderr, "coro %p has own stack %p-%p\n", prev__cctx, prev__cctx->idle_sp, STACKLEVEL);//D
727
728 if (!next->cctx)
729 next->cctx = cctx_get ();
730
731 if (prev__cctx != next->cctx)
732 {
733 assert ( prev__cctx->inuse);
734 assert (!next->cctx->inuse);
735
736 prev__cctx->inuse = 0;
737 next->cctx->inuse = 1;
738
739 prev__cctx->top_env = PL_top_env; 1283 prev__cctx->top_env = PL_top_env;
740 PL_top_env = next->cctx->top_env; 1284 PL_top_env = next->cctx->top_env;
741 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1285 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
742 } 1286 }
743 1287
744 free_coro_mortal (); 1288 free_coro_mortal (aTHX);
745
746 UNLOCK; 1289 UNLOCK;
1290
1291 if (expect_false (has_throw))
1292 {
1293 struct coro *coro = SvSTATE (coro_current);
1294
1295 if (coro->throw)
1296 {
1297 SV *exception = coro->throw;
1298 coro->throw = 0;
1299 sv_setsv (ERRSV, exception);
1300 croak (0);
1301 }
1302 }
747 } 1303 }
748} 1304}
749 1305
750struct transfer_args 1306struct transfer_args
751{ 1307{
752 struct coro *prev, *next; 1308 struct coro *prev, *next;
753 int flags;
754}; 1309};
755 1310
1311#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
756#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) 1312#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
757 1313
1314/** high level stuff ********************************************************/
1315
758static void 1316static int
759coro_state_destroy (struct coro *coro) 1317coro_state_destroy (pTHX_ struct coro *coro)
760{ 1318{
761 if (coro->refcnt--) 1319 if (coro->flags & CF_DESTROYED)
762 return; 1320 return 0;
763 1321
1322 coro->flags |= CF_DESTROYED;
1323
764 if (coro->flags & CF_RUNNING) 1324 if (coro->flags & CF_READY)
765 croak ("FATAL: tried to destroy currently running coroutine"); 1325 {
1326 /* reduce nready, as destroying a ready coro effectively unreadies it */
1327 /* alternative: look through all ready queues and remove the coro */
1328 LOCK;
1329 --coro_nready;
1330 UNLOCK;
1331 }
1332 else
1333 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
766 1334
767 if (coro->mainstack && coro->mainstack != main_mainstack) 1335 if (coro->mainstack && coro->mainstack != main_mainstack)
768 { 1336 {
769 struct coro temp; 1337 struct coro temp;
770 1338
771 SAVE ((&temp), TRANSFER_SAVE_ALL); 1339 if (coro->flags & CF_RUNNING)
772 LOAD (coro); 1340 croak ("FATAL: tried to destroy currently running coroutine");
773 1341
774 coro_destroy_stacks (); 1342 save_perl (aTHX_ &temp);
1343 load_perl (aTHX_ coro);
775 1344
776 LOAD ((&temp)); /* this will get rid of defsv etc.. */ 1345 coro_destroy (aTHX_ coro);
777 1346
1347 load_perl (aTHX_ &temp);
1348
778 coro->mainstack = 0; 1349 coro->slot = 0;
779 } 1350 }
780 1351
781 cctx_free (coro->cctx); 1352 cctx_destroy (coro->cctx);
782 SvREFCNT_dec (coro->args); 1353 SvREFCNT_dec (coro->args);
783 Safefree (coro); 1354
1355 if (coro->next) coro->next->prev = coro->prev;
1356 if (coro->prev) coro->prev->next = coro->next;
1357 if (coro == coro_first) coro_first = coro->next;
1358
1359 return 1;
784} 1360}
785 1361
786static int 1362static int
787coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1363coro_state_free (pTHX_ SV *sv, MAGIC *mg)
788{ 1364{
789 struct coro *coro = (struct coro *)mg->mg_ptr; 1365 struct coro *coro = (struct coro *)mg->mg_ptr;
790 mg->mg_ptr = 0; 1366 mg->mg_ptr = 0;
791 1367
1368 coro->hv = 0;
1369
1370 if (--coro->refcnt < 0)
1371 {
792 coro_state_destroy (coro); 1372 coro_state_destroy (aTHX_ coro);
1373 Safefree (coro);
1374 }
793 1375
794 return 0; 1376 return 0;
795} 1377}
796 1378
797static int 1379static int
… …
804 return 0; 1386 return 0;
805} 1387}
806 1388
807static MGVTBL coro_state_vtbl = { 1389static MGVTBL coro_state_vtbl = {
808 0, 0, 0, 0, 1390 0, 0, 0, 0,
809 coro_state_clear, 1391 coro_state_free,
810 0, 1392 0,
811#ifdef MGf_DUP 1393#ifdef MGf_DUP
812 coro_state_dup, 1394 coro_state_dup,
813#else 1395#else
814# define MGf_DUP 0 1396# define MGf_DUP 0
815#endif 1397#endif
816}; 1398};
817 1399
818static struct coro *
819SvSTATE (SV *coro)
820{
821 HV *stash;
822 MAGIC *mg;
823
824 if (SvROK (coro))
825 coro = SvRV (coro);
826
827 stash = SvSTASH (coro);
828 if (stash != coro_stash && stash != coro_state_stash)
829 {
830 /* very slow, but rare, check */
831 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
832 croak ("Coro::State object required");
833 }
834
835 mg = SvMAGIC (coro);
836 assert (mg->mg_type == PERL_MAGIC_ext);
837 return (struct coro *)mg->mg_ptr;
838}
839
840static void 1400static void
841prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) 1401prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
842{ 1402{
843 ta->prev = SvSTATE (prev); 1403 ta->prev = SvSTATE (prev_sv);
844 ta->next = SvSTATE (next); 1404 ta->next = SvSTATE (next_sv);
845 ta->flags = flags; 1405 TRANSFER_CHECK (*ta);
846} 1406}
847 1407
848static void 1408static void
849api_transfer (SV *prev, SV *next, int flags) 1409api_transfer (SV *prev_sv, SV *next_sv)
850{ 1410{
851 dTHX; 1411 dTHX;
852 struct transfer_args ta; 1412 struct transfer_args ta;
853 1413
854 prepare_transfer (&ta, prev, next, flags); 1414 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
855 TRANSFER (ta); 1415 TRANSFER (ta, 1);
856} 1416}
857 1417
858/** Coro ********************************************************************/ 1418/** Coro ********************************************************************/
859 1419
860#define PRIO_MAX 3
861#define PRIO_HIGH 1
862#define PRIO_NORMAL 0
863#define PRIO_LOW -1
864#define PRIO_IDLE -3
865#define PRIO_MIN -4
866
867/* for Coro.pm */
868static GV *coro_current, *coro_idle;
869static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
870static int coro_nready;
871
872static void 1420static void
873coro_enq (SV *coro_sv) 1421coro_enq (pTHX_ SV *coro_sv)
874{ 1422{
875 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1423 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
876 coro_nready++;
877} 1424}
878 1425
879static SV * 1426static SV *
880coro_deq (int min_prio) 1427coro_deq (pTHX)
881{ 1428{
882 int prio = PRIO_MAX - PRIO_MIN; 1429 int prio;
883 1430
884 min_prio -= PRIO_MIN;
885 if (min_prio < 0)
886 min_prio = 0;
887
888 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1431 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
889 if (AvFILLp (coro_ready [prio]) >= 0) 1432 if (AvFILLp (coro_ready [prio]) >= 0)
890 {
891 coro_nready--;
892 return av_shift (coro_ready [prio]); 1433 return av_shift (coro_ready [prio]);
893 }
894 1434
895 return 0; 1435 return 0;
896} 1436}
897 1437
898static int 1438static int
899api_ready (SV *coro_sv) 1439api_ready (SV *coro_sv)
900{ 1440{
1441 dTHX;
901 struct coro *coro; 1442 struct coro *coro;
1443 SV *sv_hook;
1444 void (*xs_hook)(void);
902 1445
903 if (SvROK (coro_sv)) 1446 if (SvROK (coro_sv))
904 coro_sv = SvRV (coro_sv); 1447 coro_sv = SvRV (coro_sv);
905 1448
906 coro = SvSTATE (coro_sv); 1449 coro = SvSTATE (coro_sv);
907 1450
908 if (coro->flags & CF_READY) 1451 if (coro->flags & CF_READY)
909 return 0; 1452 return 0;
910 1453
911 if (coro->flags & CF_RUNNING)
912 croak ("Coro::ready called on currently running coroutine");
913
914 coro->flags |= CF_READY; 1454 coro->flags |= CF_READY;
915 1455
916 LOCK; 1456 LOCK;
1457
1458 sv_hook = coro_nready ? 0 : coro_readyhook;
1459 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1460
917 coro_enq (SvREFCNT_inc (coro_sv)); 1461 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1462 ++coro_nready;
1463
918 UNLOCK; 1464 UNLOCK;
1465
1466 if (sv_hook)
1467 {
1468 dSP;
1469
1470 ENTER;
1471 SAVETMPS;
1472
1473 PUSHMARK (SP);
1474 PUTBACK;
1475 call_sv (sv_hook, G_DISCARD);
1476 SPAGAIN;
1477
1478 FREETMPS;
1479 LEAVE;
1480 }
1481
1482 if (xs_hook)
1483 xs_hook ();
919 1484
920 return 1; 1485 return 1;
921} 1486}
922 1487
923static int 1488static int
924api_is_ready (SV *coro_sv) 1489api_is_ready (SV *coro_sv)
925{ 1490{
1491 dTHX;
926 return !!SvSTATE (coro_sv)->flags & CF_READY; 1492 return !!(SvSTATE (coro_sv)->flags & CF_READY);
927} 1493}
928 1494
929static void 1495static void
930prepare_schedule (struct transfer_args *ta) 1496prepare_schedule (pTHX_ struct transfer_args *ta)
931{ 1497{
932 SV *current, *prev, *next; 1498 SV *prev_sv, *next_sv;
933
934 current = GvSV (coro_current);
935 1499
936 for (;;) 1500 for (;;)
937 { 1501 {
938 LOCK; 1502 LOCK;
939 next = coro_deq (PRIO_MIN); 1503 next_sv = coro_deq (aTHX);
1504
1505 /* nothing to schedule: call the idle handler */
1506 if (expect_false (!next_sv))
1507 {
1508 dSP;
1509 UNLOCK;
1510
1511 ENTER;
1512 SAVETMPS;
1513
1514 PUSHMARK (SP);
1515 PUTBACK;
1516 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1517 SPAGAIN;
1518
1519 FREETMPS;
1520 LEAVE;
1521 continue;
1522 }
1523
1524 ta->next = SvSTATE (next_sv);
1525
1526 /* cannot transfer to destroyed coros, skip and look for next */
1527 if (expect_false (ta->next->flags & CF_DESTROYED))
1528 {
1529 UNLOCK;
1530 SvREFCNT_dec (next_sv);
1531 /* coro_nready is already taken care of by destroy */
1532 continue;
1533 }
1534
1535 --coro_nready;
940 UNLOCK; 1536 UNLOCK;
941
942 if (next)
943 break; 1537 break;
944
945 {
946 dSP;
947
948 ENTER;
949 SAVETMPS;
950
951 PUSHMARK (SP);
952 PUTBACK;
953 call_sv (GvSV (coro_idle), G_DISCARD);
954
955 FREETMPS;
956 LEAVE;
957 } 1538 }
958 }
959
960 prev = SvRV (current);
961 SvRV (current) = next;
962 1539
963 /* free this only after the transfer */ 1540 /* free this only after the transfer */
1541 prev_sv = SvRV (coro_current);
1542 ta->prev = SvSTATE (prev_sv);
1543 TRANSFER_CHECK (*ta);
1544 assert (ta->next->flags & CF_READY);
1545 ta->next->flags &= ~CF_READY;
1546 SvRV_set (coro_current, next_sv);
1547
964 LOCK; 1548 LOCK;
965 free_coro_mortal (); 1549 free_coro_mortal (aTHX);
1550 coro_mortal = prev_sv;
966 UNLOCK; 1551 UNLOCK;
967 coro_mortal = prev;
968
969 ta->prev = SvSTATE (prev);
970 ta->next = SvSTATE (next);
971 ta->flags = TRANSFER_SAVE_ALL;
972
973 ta->next->flags &= ~CF_READY;
974} 1552}
975 1553
976static void 1554static void
977prepare_cede (struct transfer_args *ta) 1555prepare_cede (pTHX_ struct transfer_args *ta)
978{ 1556{
979 api_ready (GvSV (coro_current)); 1557 api_ready (coro_current);
980
981 prepare_schedule (ta); 1558 prepare_schedule (aTHX_ ta);
1559}
1560
1561static int
1562prepare_cede_notself (pTHX_ struct transfer_args *ta)
1563{
1564 if (coro_nready)
1565 {
1566 SV *prev = SvRV (coro_current);
1567 prepare_schedule (aTHX_ ta);
1568 api_ready (prev);
1569 return 1;
1570 }
1571 else
1572 return 0;
982} 1573}
983 1574
984static void 1575static void
985api_schedule (void) 1576api_schedule (void)
986{ 1577{
987 dTHX; 1578 dTHX;
988 struct transfer_args ta; 1579 struct transfer_args ta;
989 1580
990 prepare_schedule (&ta); 1581 prepare_schedule (aTHX_ &ta);
991 TRANSFER (ta); 1582 TRANSFER (ta, 1);
992} 1583}
993 1584
994static void 1585static int
995api_cede (void) 1586api_cede (void)
996{ 1587{
997 dTHX; 1588 dTHX;
998 struct transfer_args ta; 1589 struct transfer_args ta;
999 1590
1000 prepare_cede (&ta); 1591 prepare_cede (aTHX_ &ta);
1592
1593 if (expect_true (ta.prev != ta.next))
1594 {
1001 TRANSFER (ta); 1595 TRANSFER (ta, 1);
1596 return 1;
1597 }
1598 else
1599 return 0;
1002} 1600}
1003 1601
1602static int
1603api_cede_notself (void)
1604{
1605 dTHX;
1606 struct transfer_args ta;
1607
1608 if (prepare_cede_notself (aTHX_ &ta))
1609 {
1610 TRANSFER (ta, 1);
1611 return 1;
1612 }
1613 else
1614 return 0;
1615}
1616
1617static void
1618api_trace (SV *coro_sv, int flags)
1619{
1620 dTHX;
1621 struct coro *coro = SvSTATE (coro_sv);
1622
1623 if (flags & CC_TRACE)
1624 {
1625 if (!coro->cctx)
1626 coro->cctx = cctx_new ();
1627 else if (!(coro->cctx->flags & CC_TRACE))
1628 croak ("cannot enable tracing on coroutine with custom stack");
1629
1630 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1631 }
1632 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1633 {
1634 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1635
1636 if (coro->flags & CF_RUNNING)
1637 PL_runops = RUNOPS_DEFAULT;
1638 else
1639 coro->slot->runops = RUNOPS_DEFAULT;
1640 }
1641}
1642
1643static int
1644coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1645{
1646 AV *padlist;
1647 AV *av = (AV *)mg->mg_obj;
1648
1649 abort ();
1650
1651 return 0;
1652}
1653
1654static MGVTBL coro_gensub_vtbl = {
1655 0, 0, 0, 0,
1656 coro_gensub_free
1657};
1658
1659/*****************************************************************************/
1660/* PerlIO::cede */
1661
1662typedef struct
1663{
1664 PerlIOBuf base;
1665 NV next, every;
1666} PerlIOCede;
1667
1668static IV
1669PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1670{
1671 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1672
1673 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1674 self->next = nvtime () + self->every;
1675
1676 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1677}
1678
1679static SV *
1680PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1681{
1682 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1683
1684 return newSVnv (self->every);
1685}
1686
1687static IV
1688PerlIOCede_flush (pTHX_ PerlIO *f)
1689{
1690 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1691 double now = nvtime ();
1692
1693 if (now >= self->next)
1694 {
1695 api_cede ();
1696 self->next = now + self->every;
1697 }
1698
1699 return PerlIOBuf_flush (aTHX_ f);
1700}
1701
1702static PerlIO_funcs PerlIO_cede =
1703{
1704 sizeof(PerlIO_funcs),
1705 "cede",
1706 sizeof(PerlIOCede),
1707 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
1708 PerlIOCede_pushed,
1709 PerlIOBuf_popped,
1710 PerlIOBuf_open,
1711 PerlIOBase_binmode,
1712 PerlIOCede_getarg,
1713 PerlIOBase_fileno,
1714 PerlIOBuf_dup,
1715 PerlIOBuf_read,
1716 PerlIOBuf_unread,
1717 PerlIOBuf_write,
1718 PerlIOBuf_seek,
1719 PerlIOBuf_tell,
1720 PerlIOBuf_close,
1721 PerlIOCede_flush,
1722 PerlIOBuf_fill,
1723 PerlIOBase_eof,
1724 PerlIOBase_error,
1725 PerlIOBase_clearerr,
1726 PerlIOBase_setlinebuf,
1727 PerlIOBuf_get_base,
1728 PerlIOBuf_bufsiz,
1729 PerlIOBuf_get_ptr,
1730 PerlIOBuf_get_cnt,
1731 PerlIOBuf_set_ptrcnt,
1732};
1733
1734
1004MODULE = Coro::State PACKAGE = Coro::State 1735MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1005 1736
1006PROTOTYPES: DISABLE 1737PROTOTYPES: DISABLE
1007 1738
1008BOOT: 1739BOOT:
1009{ 1740{
1010#ifdef USE_ITHREADS 1741#ifdef USE_ITHREADS
1011 MUTEX_INIT (&coro_mutex); 1742 MUTEX_INIT (&coro_mutex);
1012#endif 1743#endif
1013 BOOT_PAGESIZE; 1744 BOOT_PAGESIZE;
1014 1745
1746 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1747 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1748
1749 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1750 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1751 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1752
1753 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1754 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1755 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1756
1015 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1757 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1016 1758
1017 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 1759 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1018 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 1760 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1019 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 1761 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1762 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1020 1763
1021 main_mainstack = PL_mainstack; 1764 main_mainstack = PL_mainstack;
1765 main_top_env = PL_top_env;
1022 1766
1767 while (main_top_env->je_prev)
1768 main_top_env = main_top_env->je_prev;
1769
1023 coroapi.ver = CORO_API_VERSION; 1770 coroapi.ver = CORO_API_VERSION;
1771 coroapi.rev = CORO_API_REVISION;
1024 coroapi.transfer = api_transfer; 1772 coroapi.transfer = api_transfer;
1773
1774 {
1775 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1776
1777 if (!svp) croak ("Time::HiRes is required");
1778 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1779
1780 nvtime = INT2PTR (double (*)(), SvIV (*svp));
1781 }
1025 1782
1026 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1783 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1027} 1784}
1028 1785
1029SV * 1786SV *
1030new (char *klass, ...) 1787new (char *klass, ...)
1031 CODE: 1788 CODE:
1032{ 1789{
1033 struct coro *coro; 1790 struct coro *coro;
1791 MAGIC *mg;
1034 HV *hv; 1792 HV *hv;
1035 int i; 1793 int i;
1036 1794
1037 Newz (0, coro, 1, struct coro); 1795 Newz (0, coro, 1, struct coro);
1038 coro->args = newAV (); 1796 coro->args = newAV ();
1797 coro->flags = CF_NEW;
1039 1798
1799 if (coro_first) coro_first->prev = coro;
1800 coro->next = coro_first;
1801 coro_first = coro;
1802
1040 hv = newHV (); 1803 coro->hv = hv = newHV ();
1041 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1804 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1805 mg->mg_flags |= MGf_DUP;
1042 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1806 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1043 1807
1808 av_extend (coro->args, items - 1);
1044 for (i = 1; i < items; i++) 1809 for (i = 1; i < items; i++)
1045 av_push (coro->args, newSVsv (ST (i))); 1810 av_push (coro->args, newSVsv (ST (i)));
1046} 1811}
1047 OUTPUT: 1812 OUTPUT:
1048 RETVAL 1813 RETVAL
1049 1814
1815# these not obviously related functions are all rolled into the same xs
1816# function to increase chances that they all will call transfer with the same
1817# stack offset
1050void 1818void
1051_set_stacklevel (...) 1819_set_stacklevel (...)
1052 ALIAS: 1820 ALIAS:
1053 Coro::State::transfer = 1 1821 Coro::State::transfer = 1
1054 Coro::schedule = 2 1822 Coro::schedule = 2
1055 Coro::cede = 3 1823 Coro::cede = 3
1056 Coro::Cont::yield = 4 1824 Coro::cede_notself = 4
1057 CODE: 1825 CODE:
1058{ 1826{
1059 struct transfer_args ta; 1827 struct transfer_args ta;
1060 1828
1829 PUTBACK;
1061 switch (ix) 1830 switch (ix)
1062 { 1831 {
1063 case 0: 1832 case 0:
1064 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1833 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1065 ta.next = 0; 1834 ta.next = 0;
1066 ta.flags = TRANSFER_SET_STACKLEVEL;
1067 break; 1835 break;
1068 1836
1069 case 1: 1837 case 1:
1070 if (items != 3) 1838 if (items != 2)
1071 croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); 1839 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1072 1840
1073 prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); 1841 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1074 break; 1842 break;
1075 1843
1076 case 2: 1844 case 2:
1077 prepare_schedule (&ta); 1845 prepare_schedule (aTHX_ &ta);
1078 break; 1846 break;
1079 1847
1080 case 3: 1848 case 3:
1081 prepare_cede (&ta); 1849 prepare_cede (aTHX_ &ta);
1082 break; 1850 break;
1083 1851
1084 case 4: 1852 case 4:
1085 { 1853 if (!prepare_cede_notself (aTHX_ &ta))
1086 SV *yieldstack; 1854 XSRETURN_EMPTY;
1087 SV *sv;
1088 AV *defav = GvAV (PL_defgv);
1089 1855
1090 yieldstack = *hv_fetch (
1091 (HV *)SvRV (GvSV (coro_current)),
1092 "yieldstack", sizeof ("yieldstack") - 1,
1093 0
1094 );
1095
1096 /* set up @_ -- ugly */
1097 av_clear (defav);
1098 av_fill (defav, items - 1);
1099 while (items--)
1100 av_store (defav, items, SvREFCNT_inc (ST(items)));
1101
1102 sv = av_pop ((AV *)SvRV (yieldstack));
1103 ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0));
1104 ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0));
1105 ta.flags = 0;
1106 SvREFCNT_dec (sv);
1107 }
1108 break; 1856 break;
1109
1110 } 1857 }
1858 SPAGAIN;
1111 1859
1860 BARRIER;
1861 PUTBACK;
1112 TRANSFER (ta); 1862 TRANSFER (ta, 0);
1863 SPAGAIN; /* might be the sp of a different coroutine now */
1864 /* be extra careful not to ever do anything after TRANSFER */
1113} 1865}
1866
1867bool
1868_destroy (SV *coro_sv)
1869 CODE:
1870 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1871 OUTPUT:
1872 RETVAL
1114 1873
1115void 1874void
1116_clone_state_from (SV *dst, SV *src)
1117 CODE:
1118{
1119 struct coro *coro_src = SvSTATE (src);
1120
1121 sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1122
1123 ++coro_src->refcnt;
1124 sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1125}
1126
1127void
1128_exit (code) 1875_exit (int code)
1129 int code
1130 PROTOTYPE: $ 1876 PROTOTYPE: $
1131 CODE: 1877 CODE:
1132 _exit (code); 1878 _exit (code);
1879
1880int
1881cctx_stacksize (int new_stacksize = 0)
1882 CODE:
1883 RETVAL = coro_stacksize;
1884 if (new_stacksize)
1885 coro_stacksize = new_stacksize;
1886 OUTPUT:
1887 RETVAL
1133 1888
1134int 1889int
1135cctx_count () 1890cctx_count ()
1136 CODE: 1891 CODE:
1137 RETVAL = cctx_count; 1892 RETVAL = cctx_count;
… …
1143 CODE: 1898 CODE:
1144 RETVAL = cctx_idle; 1899 RETVAL = cctx_idle;
1145 OUTPUT: 1900 OUTPUT:
1146 RETVAL 1901 RETVAL
1147 1902
1903void
1904list ()
1905 PPCODE:
1906{
1907 struct coro *coro;
1908 for (coro = coro_first; coro; coro = coro->next)
1909 if (coro->hv)
1910 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1911}
1912
1913void
1914call (Coro::State coro, SV *coderef)
1915 ALIAS:
1916 eval = 1
1917 CODE:
1918{
1919 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1920 {
1921 struct coro temp;
1922
1923 if (!(coro->flags & CF_RUNNING))
1924 {
1925 PUTBACK;
1926 save_perl (aTHX_ &temp);
1927 load_perl (aTHX_ coro);
1928 }
1929
1930 {
1931 dSP;
1932 ENTER;
1933 SAVETMPS;
1934 PUTBACK;
1935 PUSHSTACK;
1936 PUSHMARK (SP);
1937
1938 if (ix)
1939 eval_sv (coderef, 0);
1940 else
1941 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1942
1943 POPSTACK;
1944 SPAGAIN;
1945 FREETMPS;
1946 LEAVE;
1947 PUTBACK;
1948 }
1949
1950 if (!(coro->flags & CF_RUNNING))
1951 {
1952 save_perl (aTHX_ coro);
1953 load_perl (aTHX_ &temp);
1954 SPAGAIN;
1955 }
1956 }
1957}
1958
1959SV *
1960is_ready (Coro::State coro)
1961 PROTOTYPE: $
1962 ALIAS:
1963 is_ready = CF_READY
1964 is_running = CF_RUNNING
1965 is_new = CF_NEW
1966 is_destroyed = CF_DESTROYED
1967 CODE:
1968 RETVAL = boolSV (coro->flags & ix);
1969 OUTPUT:
1970 RETVAL
1971
1972void
1973api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1974
1975SV *
1976has_cctx (Coro::State coro)
1977 PROTOTYPE: $
1978 CODE:
1979 RETVAL = boolSV (!!coro->cctx);
1980 OUTPUT:
1981 RETVAL
1982
1983int
1984is_traced (Coro::State coro)
1985 PROTOTYPE: $
1986 CODE:
1987 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1988 OUTPUT:
1989 RETVAL
1990
1991IV
1992rss (Coro::State coro)
1993 PROTOTYPE: $
1994 ALIAS:
1995 usecount = 1
1996 CODE:
1997 switch (ix)
1998 {
1999 case 0: RETVAL = coro_rss (aTHX_ coro); break;
2000 case 1: RETVAL = coro->usecount; break;
2001 }
2002 OUTPUT:
2003 RETVAL
2004
2005void
2006force_cctx ()
2007 CODE:
2008 struct coro *coro = SvSTATE (coro_current);
2009 coro->cctx->idle_sp = 0;
2010
2011void
2012throw (Coro::State self, SV *throw = &PL_sv_undef)
2013 PROTOTYPE: $;$
2014 CODE:
2015 SvREFCNT_dec (self->throw);
2016 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2017
2018void
2019swap_defsv (Coro::State self)
2020 PROTOTYPE: $
2021 ALIAS:
2022 swap_defav = 1
2023 CODE:
2024 if (!self->slot)
2025 croak ("cannot swap state with coroutine that has no saved state");
2026 else
2027 {
2028 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2029 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2030
2031 SV *tmp = *src; *src = *dst; *dst = tmp;
2032 }
2033
1148MODULE = Coro::State PACKAGE = Coro 2034MODULE = Coro::State PACKAGE = Coro
1149 2035
1150BOOT: 2036BOOT:
1151{ 2037{
1152 int i; 2038 int i;
1153 2039
2040 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2041 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2042 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2043
2044 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
2045 SvREADONLY_on (coro_current);
2046
1154 coro_stash = gv_stashpv ("Coro", TRUE); 2047 coro_stash = gv_stashpv ("Coro", TRUE);
1155 2048
1156 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 2049 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1157 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 2050 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1158 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 2051 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1159 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 2052 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1160 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 2053 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1161 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 2054 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1162 2055
1163 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1164 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1165
1166 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2056 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1167 coro_ready[i] = newAV (); 2057 coro_ready[i] = newAV ();
1168 2058
1169 { 2059 {
1170 SV *sv = perl_get_sv("Coro::API", 1); 2060 SV *sv = perl_get_sv ("Coro::API", TRUE);
2061 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1171 2062
1172 coroapi.schedule = api_schedule; 2063 coroapi.schedule = api_schedule;
1173 coroapi.cede = api_cede; 2064 coroapi.cede = api_cede;
2065 coroapi.cede_notself = api_cede_notself;
1174 coroapi.ready = api_ready; 2066 coroapi.ready = api_ready;
1175 coroapi.is_ready = api_is_ready; 2067 coroapi.is_ready = api_is_ready;
1176 coroapi.nready = &coro_nready; 2068 coroapi.nready = &coro_nready;
1177 coroapi.current = coro_current; 2069 coroapi.current = coro_current;
1178 2070
1179 GCoroAPI = &coroapi; 2071 GCoroAPI = &coroapi;
1180 sv_setiv (sv, (IV)&coroapi); 2072 sv_setiv (sv, (IV)&coroapi);
1181 SvREADONLY_on (sv); 2073 SvREADONLY_on (sv);
1182 } 2074 }
1183} 2075}
2076
2077void
2078_set_current (SV *current)
2079 PROTOTYPE: $
2080 CODE:
2081 SvREFCNT_dec (SvRV (coro_current));
2082 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2083
2084void
2085_set_readyhook (SV *hook)
2086 PROTOTYPE: $
2087 CODE:
2088 LOCK;
2089 SvREFCNT_dec (coro_readyhook);
2090 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2091 UNLOCK;
1184 2092
1185int 2093int
1186prio (Coro::State coro, int newprio = 0) 2094prio (Coro::State coro, int newprio = 0)
1187 ALIAS: 2095 ALIAS:
1188 nice = 1 2096 nice = 1
… …
1191 RETVAL = coro->prio; 2099 RETVAL = coro->prio;
1192 2100
1193 if (items > 1) 2101 if (items > 1)
1194 { 2102 {
1195 if (ix) 2103 if (ix)
1196 newprio += coro->prio; 2104 newprio = coro->prio - newprio;
1197 2105
1198 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 2106 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1199 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 2107 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1200 2108
1201 coro->prio = newprio; 2109 coro->prio = newprio;
1202 } 2110 }
1203} 2111}
2112 OUTPUT:
2113 RETVAL
1204 2114
1205SV * 2115SV *
1206ready (SV *self) 2116ready (SV *self)
1207 PROTOTYPE: $ 2117 PROTOTYPE: $
1208 CODE: 2118 CODE:
1209 RETVAL = boolSV (api_ready (self)); 2119 RETVAL = boolSV (api_ready (self));
1210 OUTPUT: 2120 OUTPUT:
1211 RETVAL 2121 RETVAL
1212 2122
1213SV *
1214is_ready (SV *self)
1215 PROTOTYPE: $
1216 CODE:
1217 RETVAL = boolSV (api_is_ready (self));
1218 OUTPUT:
1219 RETVAL
1220
1221int 2123int
1222nready (...) 2124nready (...)
1223 PROTOTYPE: 2125 PROTOTYPE:
1224 CODE: 2126 CODE:
1225 RETVAL = coro_nready; 2127 RETVAL = coro_nready;
1226 OUTPUT: 2128 OUTPUT:
1227 RETVAL 2129 RETVAL
1228 2130
1229MODULE = Coro::State PACKAGE = Coro::AIO 2131# for async_pool speedup
2132void
2133_pool_1 (SV *cb)
2134 CODE:
2135{
2136 struct coro *coro = SvSTATE (coro_current);
2137 HV *hv = (HV *)SvRV (coro_current);
2138 AV *defav = GvAV (PL_defgv);
2139 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2140 AV *invoke_av;
2141 int i, len;
2142
2143 if (!invoke)
2144 {
2145 SV *old = PL_diehook;
2146 PL_diehook = 0;
2147 SvREFCNT_dec (old);
2148 croak ("\3async_pool terminate\2\n");
2149 }
2150
2151 SvREFCNT_dec (coro->saved_deffh);
2152 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2153
2154 hv_store (hv, "desc", sizeof ("desc") - 1,
2155 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2156
2157 invoke_av = (AV *)SvRV (invoke);
2158 len = av_len (invoke_av);
2159
2160 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2161
2162 if (len > 0)
2163 {
2164 av_fill (defav, len - 1);
2165 for (i = 0; i < len; ++i)
2166 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2167 }
2168
2169 SvREFCNT_dec (invoke);
2170}
2171
2172void
2173_pool_2 (SV *cb)
2174 CODE:
2175{
2176 struct coro *coro = SvSTATE (coro_current);
2177
2178 sv_setsv (cb, &PL_sv_undef);
2179
2180 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2181 coro->saved_deffh = 0;
2182
2183 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2184 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2185 {
2186 SV *old = PL_diehook;
2187 PL_diehook = 0;
2188 SvREFCNT_dec (old);
2189 croak ("\3async_pool terminate\2\n");
2190 }
2191
2192 av_clear (GvAV (PL_defgv));
2193 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2194 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2195
2196 coro->prio = 0;
2197
2198 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2199 api_trace (coro_current, 0);
2200
2201 av_push (av_async_pool, newSVsv (coro_current));
2202}
2203
2204#if 0
2205
2206void
2207_generator_call (...)
2208 PROTOTYPE: @
2209 PPCODE:
2210 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2211 xxxx
2212 abort ();
1230 2213
1231SV * 2214SV *
1232_get_state () 2215gensub (SV *sub, ...)
1233 CODE: 2216 PROTOTYPE: &;@
2217 CODE:
1234{ 2218{
1235 struct { 2219 struct coro *coro;
1236 int errorno; 2220 MAGIC *mg;
1237 int laststype; 2221 CV *xcv;
1238 int laststatval; 2222 CV *ncv = (CV *)newSV_type (SVt_PVCV);
1239 Stat_t statcache; 2223 int i;
1240 } data;
1241 2224
1242 data.errorno = errno; 2225 CvGV (ncv) = CvGV (cv);
1243 data.laststype = PL_laststype; 2226 CvFILE (ncv) = CvFILE (cv);
1244 data.laststatval = PL_laststatval;
1245 data.statcache = PL_statcache;
1246 2227
1247 RETVAL = newSVpvn ((char *)&data, sizeof data); 2228 Newz (0, coro, 1, struct coro);
2229 coro->args = newAV ();
2230 coro->flags = CF_NEW;
2231
2232 av_extend (coro->args, items - 1);
2233 for (i = 1; i < items; i++)
2234 av_push (coro->args, newSVsv (ST (i)));
2235
2236 CvISXSUB_on (ncv);
2237 CvXSUBANY (ncv).any_ptr = (void *)coro;
2238
2239 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2240
2241 CvXSUB (ncv) = CvXSUB (xcv);
2242 CvANON_on (ncv);
2243
2244 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2245 RETVAL = newRV_noinc ((SV *)ncv);
1248} 2246}
1249 OUTPUT: 2247 OUTPUT:
1250 RETVAL 2248 RETVAL
1251 2249
2250#endif
2251
2252
2253MODULE = Coro::State PACKAGE = Coro::AIO
2254
1252void 2255void
1253_set_state (char *data_) 2256_get_state (SV *self)
2257 PPCODE:
2258{
2259 AV *defav = GvAV (PL_defgv);
2260 AV *av = newAV ();
2261 int i;
2262 SV *data_sv = newSV (sizeof (struct io_state));
2263 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2264 SvCUR_set (data_sv, sizeof (struct io_state));
2265 SvPOK_only (data_sv);
2266
2267 data->errorno = errno;
2268 data->laststype = PL_laststype;
2269 data->laststatval = PL_laststatval;
2270 data->statcache = PL_statcache;
2271
2272 av_extend (av, AvFILLp (defav) + 1 + 1);
2273
2274 for (i = 0; i <= AvFILLp (defav); ++i)
2275 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2276
2277 av_push (av, data_sv);
2278
2279 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2280
2281 api_ready (self);
2282}
2283
2284void
2285_set_state (SV *state)
1254 PROTOTYPE: $ 2286 PROTOTYPE: $
2287 PPCODE:
2288{
2289 AV *av = (AV *)SvRV (state);
2290 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2291 int i;
2292
2293 errno = data->errorno;
2294 PL_laststype = data->laststype;
2295 PL_laststatval = data->laststatval;
2296 PL_statcache = data->statcache;
2297
2298 EXTEND (SP, AvFILLp (av));
2299 for (i = 0; i < AvFILLp (av); ++i)
2300 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2301}
2302
2303
2304MODULE = Coro::State PACKAGE = Coro::AnyEvent
2305
2306BOOT:
2307 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2308
2309SV *
2310_schedule (...)
2311 PROTOTYPE: @
1255 CODE: 2312 CODE:
1256{ 2313{
1257 struct { 2314 static int incede;
1258 int errorno;
1259 int laststype;
1260 int laststatval;
1261 Stat_t statcache;
1262 } *data = (void *)data_;
1263 2315
1264 errno = data->errorno; 2316 api_cede_notself ();
1265 PL_laststype = data->laststype; 2317
1266 PL_laststatval = data->laststatval; 2318 ++incede;
1267 PL_statcache = data->statcache; 2319 while (coro_nready >= incede && api_cede ())
2320 ;
2321
2322 sv_setsv (sv_activity, &PL_sv_undef);
2323 if (coro_nready >= incede)
2324 {
2325 PUSHMARK (SP);
2326 PUTBACK;
2327 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2328 SPAGAIN;
2329 }
2330
2331 --incede;
1268} 2332}
2333
2334
2335MODULE = Coro::State PACKAGE = PerlIO::cede
2336
2337BOOT:
2338 PerlIO_define_layer (aTHX_ &PerlIO_cede);

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