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Comparing Coro/Coro/State.xs (file contents):
Revision 1.118 by root, Fri Dec 1 19:58:53 2006 UTC vs.
Revision 1.245 by root, Mon Sep 22 05:40:21 2008 UTC

1#include "libcoro/coro.c" 1#include "libcoro/coro.c"
2
3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
2 5
3#include "EXTERN.h" 6#include "EXTERN.h"
4#include "perl.h" 7#include "perl.h"
5#include "XSUB.h" 8#include "XSUB.h"
6 9
7#include "patchlevel.h" 10#include "patchlevel.h"
8 11
9#if USE_VALGRIND
10# include <valgrind/valgrind.h>
11#endif
12
13/* the maximum number of idle cctx that will be pooled */
14#define MAX_IDLE_CCTX 8
15
16#define PERL_VERSION_ATLEAST(a,b,c) \
17 (PERL_REVISION > (a) \
18 || (PERL_REVISION == (a) \
19 && (PERL_VERSION > (b) \
20 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22#if !PERL_VERSION_ATLEAST (5,6,0)
23# ifndef PL_ppaddr
24# define PL_ppaddr ppaddr
25# endif
26# ifndef call_sv
27# define call_sv perl_call_sv
28# endif
29# ifndef get_sv
30# define get_sv perl_get_sv
31# endif
32# ifndef get_cv
33# define get_cv perl_get_cv
34# endif
35# ifndef IS_PADGV
36# define IS_PADGV(v) 0
37# endif
38# ifndef IS_PADCONST
39# define IS_PADCONST(v) 0
40# endif
41#endif
42
43#include <stdio.h> 12#include <stdio.h>
44#include <errno.h> 13#include <errno.h>
14#include <assert.h>
45 15
46#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 16#ifdef WIN32
47# undef STACKGUARD 17# undef setjmp
48#endif 18# undef longjmp
49 19# undef _exit
50#ifndef STACKGUARD 20# define setjmp _setjmp // deep magic, don't ask
51# define STACKGUARD 0 21#else
22# include <inttypes.h> /* most portable stdint.h */
52#endif 23#endif
53 24
54#ifdef HAVE_MMAP 25#ifdef HAVE_MMAP
55# include <unistd.h> 26# include <unistd.h>
56# include <sys/mman.h> 27# include <sys/mman.h>
… …
72#else 43#else
73# define PAGESIZE 0 44# define PAGESIZE 0
74# define BOOT_PAGESIZE (void)0 45# define BOOT_PAGESIZE (void)0
75#endif 46#endif
76 47
77/* The next macro should declare a variable stacklevel that contains and approximation 48#if CORO_USE_VALGRIND
78 * to the current C stack pointer. Its property is that it changes with each call 49# include <valgrind/valgrind.h>
79 * and should be unique. */ 50# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51#else
52# define REGISTER_STACK(cctx,start,end)
53#endif
54
55/* the maximum number of idle cctx that will be pooled */
56#define MAX_IDLE_CCTX 8
57
58#define PERL_VERSION_ATLEAST(a,b,c) \
59 (PERL_REVISION > (a) \
60 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \
62 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
63
64#if !PERL_VERSION_ATLEAST (5,6,0)
65# ifndef PL_ppaddr
66# define PL_ppaddr ppaddr
67# endif
68# ifndef call_sv
69# define call_sv perl_call_sv
70# endif
71# ifndef get_sv
72# define get_sv perl_get_sv
73# endif
74# ifndef get_cv
75# define get_cv perl_get_cv
76# endif
77# ifndef IS_PADGV
78# define IS_PADGV(v) 0
79# endif
80# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0
82# endif
83#endif
84
85/* 5.8.8 */
86#ifndef GV_NOTQUAL
87# define GV_NOTQUAL 0
88#endif
89#ifndef newSV
90# define newSV(l) NEWSV(0,l)
91#endif
92
93/* 5.11 */
94#ifndef CxHASARGS
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96#endif
97
98/* 5.8.7 */
99#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v)
101#endif
102
103#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
104# undef CORO_STACKGUARD
105#endif
106
107#ifndef CORO_STACKGUARD
108# define CORO_STACKGUARD 0
109#endif
110
111/* prefer perl internal functions over our own? */
112#ifndef CORO_PREFER_PERL_FUNCTIONS
113# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif
115
116/* The next macros try to return the current stack pointer, in an as
117 * portable way as possible. */
80#define dSTACKLEVEL int stacklevel 118#define dSTACKLEVEL volatile char stacklevel
81#define STACKLEVEL ((void *)&stacklevel) 119#define STACKLEVEL ((void *)&stacklevel)
82 120
83#define IN_DESTRUCT (PL_main_cv == Nullcv) 121#define IN_DESTRUCT (PL_main_cv == Nullcv)
84 122
85#if __GNUC__ >= 3 123#if __GNUC__ >= 3
86# define attribute(x) __attribute__(x) 124# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value))
87#else 127#else
88# define attribute(x) 128# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr)
89#endif 131#endif
132
133#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1)
90 135
91#define NOINLINE attribute ((noinline)) 136#define NOINLINE attribute ((noinline))
92 137
93#include "CoroAPI.h" 138#include "CoroAPI.h"
94
95#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96 139
97#ifdef USE_ITHREADS 140#ifdef USE_ITHREADS
98static perl_mutex coro_mutex; 141static perl_mutex coro_mutex;
99# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 142# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 143# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101#else 144#else
102# define LOCK (void)0 145# define LOCK (void)0
103# define UNLOCK (void)0 146# define UNLOCK (void)0
104#endif 147#endif
105 148
149/* helper storage struct for Coro::AIO */
150struct io_state
151{
152 int errorno;
153 I32 laststype;
154 int laststatval;
155 Stat_t statcache;
156};
157
158static size_t coro_stacksize = CORO_STACKSIZE;
106static struct CoroAPI coroapi; 159static struct CoroAPI coroapi;
107static AV *main_mainstack; /* used to differentiate between $main and others */ 160static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env;
108static HV *coro_state_stash, *coro_stash; 162static HV *coro_state_stash, *coro_stash;
109static SV *coro_mortal; /* will be freed after next transfer */ 163static volatile SV *coro_mortal; /* will be freed after next transfer */
164
165static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook;
168static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */
170
171/* async_pool helper stuff */
172static SV *sv_pool_rss;
173static SV *sv_pool_size;
174static AV *av_async_pool;
175
176/* Coro::AnyEvent */
177static SV *sv_activity;
110 178
111static struct coro_cctx *cctx_first; 179static struct coro_cctx *cctx_first;
112static int cctx_count, cctx_idle; 180static int cctx_count, cctx_idle;
181
182enum {
183 CC_MAPPED = 0x01,
184 CC_NOREUSE = 0x02, /* throw this away after tracing */
185 CC_TRACE = 0x04,
186 CC_TRACE_SUB = 0x08, /* trace sub calls */
187 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189};
113 190
114/* this is a structure representing a c-level coroutine */ 191/* this is a structure representing a c-level coroutine */
115typedef struct coro_cctx { 192typedef struct coro_cctx {
116 struct coro_cctx *next; 193 struct coro_cctx *next;
117 194
118 /* the stack */ 195 /* the stack */
119 void *sptr; 196 void *sptr;
120 long ssize; /* positive == mmap, otherwise malloc */ 197 size_t ssize;
121 198
122 /* cpu state */ 199 /* cpu state */
123 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
124 JMPENV *top_env; 202 JMPENV *top_env;
125 coro_context cctx; 203 coro_context cctx;
126 204
127 int inuse;
128
129#if USE_VALGRIND 205#if CORO_USE_VALGRIND
130 int valgrind_id; 206 int valgrind_id;
131#endif 207#endif
208 unsigned char flags;
132} coro_cctx; 209} coro_cctx;
133 210
134enum { 211enum {
135 CF_RUNNING = 0x0001, /* coroutine is running */ 212 CF_RUNNING = 0x0001, /* coroutine is running */
136 CF_READY = 0x0002, /* coroutine is ready */ 213 CF_READY = 0x0002, /* coroutine is ready */
137 CF_NEW = 0x0004, /* ahs never been switched to */ 214 CF_NEW = 0x0004, /* has never been switched to */
215 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
138}; 216};
217
218/* the structure where most of the perl state is stored, overlaid on the cxstack */
219typedef struct {
220 SV *defsv;
221 AV *defav;
222 SV *errsv;
223 SV *irsgv;
224#define VAR(name,type) type name;
225# include "state.h"
226#undef VAR
227} perl_slots;
228
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
139 230
140/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
141struct coro { 232struct coro {
142 /* the c coroutine allocated to this perl coroutine, if any */ 233 /* the c coroutine allocated to this perl coroutine, if any */
143 coro_cctx *cctx; 234 coro_cctx *cctx;
144 235
236 /* process data */
237 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */
239
145 /* data associated with this coroutine (initial args) */ 240 AV *args; /* data associated with this coroutine (initial args) */
146 AV *args; 241 int refcnt; /* coroutines are refcounted, yes */
147 int refcnt; 242 int flags; /* CF_ flags */
148 int flags; 243 HV *hv; /* the perl hash associated with this coro, if any */
149 244
150 /* optionally saved, might be zero */ 245 /* statistics */
151 AV *defav; 246 int usecount; /* number of transfers to this coro */
152 SV *defsv;
153 SV *errsv;
154
155#define VAR(name,type) type name;
156# include "state.h"
157#undef VAR
158 247
159 /* coro process data */ 248 /* coro process data */
160 int prio; 249 int prio;
250 SV *throw; /* exception to be thrown */
251
252 /* async_pool */
253 SV *saved_deffh;
254
255 /* linked list */
256 struct coro *next, *prev;
161}; 257};
162 258
163typedef struct coro *Coro__State; 259typedef struct coro *Coro__State;
164typedef struct coro *Coro__State_or_hashref; 260typedef struct coro *Coro__State_or_hashref;
165 261
262/** Coro ********************************************************************/
263
264#define PRIO_MAX 3
265#define PRIO_HIGH 1
266#define PRIO_NORMAL 0
267#define PRIO_LOW -1
268#define PRIO_IDLE -3
269#define PRIO_MIN -4
270
271/* for Coro.pm */
272static SV *coro_current;
273static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
275static int coro_nready;
276static struct coro *coro_first;
277
278/** lowlevel stuff **********************************************************/
279
280static SV *
281coro_get_sv (pTHX_ const char *name, int create)
282{
283#if PERL_VERSION_ATLEAST (5,10,0)
284 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
285 get_sv (name, create);
286#endif
287 return get_sv (name, create);
288}
289
166static AV * 290static AV *
291coro_get_av (pTHX_ const char *name, int create)
292{
293#if PERL_VERSION_ATLEAST (5,10,0)
294 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
295 get_av (name, create);
296#endif
297 return get_av (name, create);
298}
299
300static HV *
301coro_get_hv (pTHX_ const char *name, int create)
302{
303#if PERL_VERSION_ATLEAST (5,10,0)
304 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
305 get_hv (name, create);
306#endif
307 return get_hv (name, create);
308}
309
310static AV *
167coro_clone_padlist (CV *cv) 311coro_clone_padlist (pTHX_ CV *cv)
168{ 312{
169 AV *padlist = CvPADLIST (cv); 313 AV *padlist = CvPADLIST (cv);
170 AV *newpadlist, *newpad; 314 AV *newpadlist, *newpad;
171 315
172 newpadlist = newAV (); 316 newpadlist = newAV ();
173 AvREAL_off (newpadlist); 317 AvREAL_off (newpadlist);
174#if PERL_VERSION_ATLEAST (5,9,0) 318#if PERL_VERSION_ATLEAST (5,10,0)
175 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 319 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
176#else 320#else
177 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
178#endif 322#endif
179 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
… …
184 328
185 return newpadlist; 329 return newpadlist;
186} 330}
187 331
188static void 332static void
189free_padlist (AV *padlist) 333free_padlist (pTHX_ AV *padlist)
190{ 334{
191 /* may be during global destruction */ 335 /* may be during global destruction */
192 if (SvREFCNT (padlist)) 336 if (SvREFCNT (padlist))
193 { 337 {
194 I32 i = AvFILLp (padlist); 338 I32 i = AvFILLp (padlist);
… …
215 AV *padlist; 359 AV *padlist;
216 AV *av = (AV *)mg->mg_obj; 360 AV *av = (AV *)mg->mg_obj;
217 361
218 /* casting is fun. */ 362 /* casting is fun. */
219 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 363 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
220 free_padlist (padlist); 364 free_padlist (aTHX_ padlist);
221 365
222 SvREFCNT_dec (av); 366 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
223 367
224 return 0; 368 return 0;
225} 369}
226 370
227#define PERL_MAGIC_coro PERL_MAGIC_ext 371#define CORO_MAGIC_type_cv PERL_MAGIC_ext
372#define CORO_MAGIC_type_state PERL_MAGIC_ext
228 373
229static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 374static MGVTBL coro_cv_vtbl = {
375 0, 0, 0, 0,
376 coro_cv_free
377};
230 378
231#define CORO_MAGIC(cv) \ 379#define CORO_MAGIC(sv,type) \
232 SvMAGIC (cv) \ 380 SvMAGIC (sv) \
233 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ 381 ? SvMAGIC (sv)->mg_type == type \
234 ? SvMAGIC (cv) \ 382 ? SvMAGIC (sv) \
235 : mg_find ((SV *)cv, PERL_MAGIC_coro) \ 383 : mg_find (sv, type) \
236 : 0 384 : 0
385
386#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
387#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
388
389static struct coro *
390SvSTATE_ (pTHX_ SV *coro)
391{
392 HV *stash;
393 MAGIC *mg;
394
395 if (SvROK (coro))
396 coro = SvRV (coro);
397
398 if (expect_false (SvTYPE (coro) != SVt_PVHV))
399 croak ("Coro::State object required");
400
401 stash = SvSTASH (coro);
402 if (expect_false (stash != coro_stash && stash != coro_state_stash))
403 {
404 /* very slow, but rare, check */
405 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
406 croak ("Coro::State object required");
407 }
408
409 mg = CORO_MAGIC_state (coro);
410 return (struct coro *)mg->mg_ptr;
411}
412
413#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
237 414
238/* the next two functions merely cache the padlists */ 415/* the next two functions merely cache the padlists */
239static void 416static void
240get_padlist (CV *cv) 417get_padlist (pTHX_ CV *cv)
241{ 418{
242 MAGIC *mg = CORO_MAGIC (cv); 419 MAGIC *mg = CORO_MAGIC_cv (cv);
243 AV *av; 420 AV *av;
244 421
245 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 422 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
246 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 423 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
247 else 424 else
248 { 425 {
249#if 0 426#if CORO_PREFER_PERL_FUNCTIONS
250 /* this is probably cleaner, but also slower? */ 427 /* this is probably cleaner? but also slower! */
428 /* in practise, it seems to be less stable */
251 CV *cp = Perl_cv_clone (cv); 429 CV *cp = Perl_cv_clone (cv);
252 CvPADLIST (cv) = CvPADLIST (cp); 430 CvPADLIST (cv) = CvPADLIST (cp);
253 CvPADLIST (cp) = 0; 431 CvPADLIST (cp) = 0;
254 SvREFCNT_dec (cp); 432 SvREFCNT_dec (cp);
255#else 433#else
256 CvPADLIST (cv) = coro_clone_padlist (cv); 434 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
257#endif 435#endif
258 } 436 }
259} 437}
260 438
261static void 439static void
262put_padlist (CV *cv) 440put_padlist (pTHX_ CV *cv)
263{ 441{
264 MAGIC *mg = CORO_MAGIC (cv); 442 MAGIC *mg = CORO_MAGIC_cv (cv);
265 AV *av; 443 AV *av;
266 444
267 if (!mg) 445 if (expect_false (!mg))
268 { 446 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
269 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
270 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
271 mg->mg_virtual = &vtbl_coro;
272 mg->mg_obj = (SV *)newAV ();
273 }
274 447
275 av = (AV *)mg->mg_obj; 448 av = (AV *)mg->mg_obj;
276 449
277 if (AvFILLp (av) >= AvMAX (av)) 450 if (expect_false (AvFILLp (av) >= AvMAX (av)))
278 av_extend (av, AvMAX (av) + 1); 451 av_extend (av, AvMAX (av) + 1);
279 452
280 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 453 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
281} 454}
282 455
283#define SB do { 456/** load & save, init *******************************************************/
284#define SE } while (0)
285
286#define LOAD(state) load_state ((state))
287#define SAVE(state,flags) save_state ((state),(flags))
288
289#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
290 457
291static void 458static void
292load_state (Coro__State c) 459load_perl (pTHX_ Coro__State c)
293{ 460{
461 perl_slots *slot = c->slot;
462 c->slot = 0;
463
464 PL_mainstack = c->mainstack;
465
466 GvSV (PL_defgv) = slot->defsv;
467 GvAV (PL_defgv) = slot->defav;
468 GvSV (PL_errgv) = slot->errsv;
469 GvSV (irsgv) = slot->irsgv;
470
294#define VAR(name,type) PL_ ## name = c->name; 471 #define VAR(name,type) PL_ ## name = slot->name;
295# include "state.h" 472 # include "state.h"
296#undef VAR 473 #undef VAR
297
298 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
299 if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
300 if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
301 474
302 { 475 {
303 dSP; 476 dSP;
477
304 CV *cv; 478 CV *cv;
305 479
306 /* now do the ugly restore mess */ 480 /* now do the ugly restore mess */
307 while ((cv = (CV *)POPs)) 481 while (expect_true (cv = (CV *)POPs))
308 { 482 {
309 put_padlist (cv); /* mark this padlist as available */ 483 put_padlist (aTHX_ cv); /* mark this padlist as available */
310 CvDEPTH (cv) = PTR2IV (POPs); 484 CvDEPTH (cv) = PTR2IV (POPs);
311 CvPADLIST (cv) = (AV *)POPs; 485 CvPADLIST (cv) = (AV *)POPs;
312 } 486 }
313 487
314 PUTBACK; 488 PUTBACK;
315 } 489 }
316} 490}
317 491
318static void 492static void
319save_state (Coro__State c, int flags) 493save_perl (pTHX_ Coro__State c)
320{ 494{
321 { 495 {
322 dSP; 496 dSP;
323 I32 cxix = cxstack_ix; 497 I32 cxix = cxstack_ix;
324 PERL_CONTEXT *ccstk = cxstack; 498 PERL_CONTEXT *ccstk = cxstack;
… …
327 /* 501 /*
328 * the worst thing you can imagine happens first - we have to save 502 * the worst thing you can imagine happens first - we have to save
329 * (and reinitialize) all cv's in the whole callchain :( 503 * (and reinitialize) all cv's in the whole callchain :(
330 */ 504 */
331 505
332 PUSHs (Nullsv); 506 XPUSHs (Nullsv);
333 /* this loop was inspired by pp_caller */ 507 /* this loop was inspired by pp_caller */
334 for (;;) 508 for (;;)
335 { 509 {
336 while (cxix >= 0) 510 while (expect_true (cxix >= 0))
337 { 511 {
338 PERL_CONTEXT *cx = &ccstk[cxix--]; 512 PERL_CONTEXT *cx = &ccstk[cxix--];
339 513
340 if (CxTYPE (cx) == CXt_SUB) 514 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
341 { 515 {
342 CV *cv = cx->blk_sub.cv; 516 CV *cv = cx->blk_sub.cv;
343 517
344 if (CvDEPTH (cv)) 518 if (expect_true (CvDEPTH (cv)))
345 { 519 {
346 EXTEND (SP, 3); 520 EXTEND (SP, 3);
347
348 PUSHs ((SV *)CvPADLIST (cv)); 521 PUSHs ((SV *)CvPADLIST (cv));
349 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 522 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
350 PUSHs ((SV *)cv); 523 PUSHs ((SV *)cv);
351 524
352 CvDEPTH (cv) = 0; 525 CvDEPTH (cv) = 0;
353 get_padlist (cv); 526 get_padlist (aTHX_ cv);
354 } 527 }
355 } 528 }
356#ifdef CXt_FORMAT
357 else if (CxTYPE (cx) == CXt_FORMAT)
358 {
359 /* I never used formats, so how should I know how these are implemented? */
360 /* my bold guess is as a simple, plain sub... */
361 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
362 }
363#endif
364 } 529 }
365 530
366 if (top_si->si_type == PERLSI_MAIN) 531 if (expect_true (top_si->si_type == PERLSI_MAIN))
367 break; 532 break;
368 533
369 top_si = top_si->si_prev; 534 top_si = top_si->si_prev;
370 ccstk = top_si->si_cxstack; 535 ccstk = top_si->si_cxstack;
371 cxix = top_si->si_cxix; 536 cxix = top_si->si_cxix;
372 } 537 }
373 538
374 PUTBACK; 539 PUTBACK;
375 } 540 }
376 541
377 c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 542 /* allocate some space on the context stack for our purposes */
378 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 543 /* we manually unroll here, as usually 2 slots is enough */
379 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 544 if (SLOT_COUNT >= 1) CXINC;
545 if (SLOT_COUNT >= 2) CXINC;
546 if (SLOT_COUNT >= 3) CXINC;
547 {
548 int i;
549 for (i = 3; i < SLOT_COUNT; ++i)
550 CXINC;
551 }
552 cxstack_ix -= SLOT_COUNT; /* undo allocation */
380 553
554 c->mainstack = PL_mainstack;
555
556 {
557 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
558
559 slot->defav = GvAV (PL_defgv);
560 slot->defsv = DEFSV;
561 slot->errsv = ERRSV;
562 slot->irsgv = GvSV (irsgv);
563
381#define VAR(name,type)c->name = PL_ ## name; 564 #define VAR(name,type) slot->name = PL_ ## name;
382# include "state.h" 565 # include "state.h"
383#undef VAR 566 #undef VAR
567 }
384} 568}
385 569
386/* 570/*
387 * allocate various perl stacks. This is an exact copy 571 * allocate various perl stacks. This is an exact copy
388 * of perl.c:init_stacks, except that it uses less memory 572 * of perl.c:init_stacks, except that it uses less memory
389 * on the (sometimes correct) assumption that coroutines do 573 * on the (sometimes correct) assumption that coroutines do
390 * not usually need a lot of stackspace. 574 * not usually need a lot of stackspace.
391 */ 575 */
576#if CORO_PREFER_PERL_FUNCTIONS
577# define coro_init_stacks init_stacks
578#else
392static void 579static void
393coro_init_stacks () 580coro_init_stacks (pTHX)
394{ 581{
395 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 582 PL_curstackinfo = new_stackinfo(32, 8);
396 PL_curstackinfo->si_type = PERLSI_MAIN; 583 PL_curstackinfo->si_type = PERLSI_MAIN;
397 PL_curstack = PL_curstackinfo->si_stack; 584 PL_curstack = PL_curstackinfo->si_stack;
398 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 585 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
399 586
400 PL_stack_base = AvARRAY(PL_curstack); 587 PL_stack_base = AvARRAY(PL_curstack);
401 PL_stack_sp = PL_stack_base; 588 PL_stack_sp = PL_stack_base;
402 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 589 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
403 590
404 New(50,PL_tmps_stack,128,SV*); 591 New(50,PL_tmps_stack,32,SV*);
405 PL_tmps_floor = -1; 592 PL_tmps_floor = -1;
406 PL_tmps_ix = -1; 593 PL_tmps_ix = -1;
407 PL_tmps_max = 128; 594 PL_tmps_max = 32;
408 595
409 New(54,PL_markstack,32,I32); 596 New(54,PL_markstack,16,I32);
410 PL_markstack_ptr = PL_markstack; 597 PL_markstack_ptr = PL_markstack;
411 PL_markstack_max = PL_markstack + 32; 598 PL_markstack_max = PL_markstack + 16;
412 599
413#ifdef SET_MARK_OFFSET 600#ifdef SET_MARK_OFFSET
414 SET_MARK_OFFSET; 601 SET_MARK_OFFSET;
415#endif 602#endif
416 603
417 New(54,PL_scopestack,32,I32); 604 New(54,PL_scopestack,8,I32);
418 PL_scopestack_ix = 0; 605 PL_scopestack_ix = 0;
419 PL_scopestack_max = 32; 606 PL_scopestack_max = 8;
420 607
421 New(54,PL_savestack,64,ANY); 608 New(54,PL_savestack,24,ANY);
422 PL_savestack_ix = 0; 609 PL_savestack_ix = 0;
423 PL_savestack_max = 64; 610 PL_savestack_max = 24;
424 611
425#if !PERL_VERSION_ATLEAST (5,9,0) 612#if !PERL_VERSION_ATLEAST (5,10,0)
426 New(54,PL_retstack,16,OP*); 613 New(54,PL_retstack,4,OP*);
427 PL_retstack_ix = 0; 614 PL_retstack_ix = 0;
428 PL_retstack_max = 16; 615 PL_retstack_max = 4;
429#endif 616#endif
430} 617}
618#endif
431 619
432/* 620/*
433 * destroy the stacks, the callchain etc... 621 * destroy the stacks, the callchain etc...
434 */ 622 */
435static void 623static void
436coro_destroy_stacks () 624coro_destroy_stacks (pTHX)
437{ 625{
438 if (!IN_DESTRUCT)
439 {
440 /* is this ugly, I ask? */
441 LEAVE_SCOPE (0);
442
443 /* sure it is, but more important: is it correct?? :/ */
444 FREETMPS;
445
446 /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
447 }
448
449 while (PL_curstackinfo->si_next) 626 while (PL_curstackinfo->si_next)
450 PL_curstackinfo = PL_curstackinfo->si_next; 627 PL_curstackinfo = PL_curstackinfo->si_next;
451 628
452 while (PL_curstackinfo) 629 while (PL_curstackinfo)
453 { 630 {
454 PERL_SI *p = PL_curstackinfo->si_prev; 631 PERL_SI *p = PL_curstackinfo->si_prev;
455 632
456 { /*D*//*remove*/
457 dSP;
458 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
459 PUTBACK; /* possibly superfluous */
460 }
461
462 if (!IN_DESTRUCT) 633 if (!IN_DESTRUCT)
463 {
464 dounwind (-1);/*D*//*remove*/
465 SvREFCNT_dec (PL_curstackinfo->si_stack); 634 SvREFCNT_dec (PL_curstackinfo->si_stack);
466 }
467 635
468 Safefree (PL_curstackinfo->si_cxstack); 636 Safefree (PL_curstackinfo->si_cxstack);
469 Safefree (PL_curstackinfo); 637 Safefree (PL_curstackinfo);
470 PL_curstackinfo = p; 638 PL_curstackinfo = p;
471 } 639 }
472 640
473 Safefree (PL_tmps_stack); 641 Safefree (PL_tmps_stack);
474 Safefree (PL_markstack); 642 Safefree (PL_markstack);
475 Safefree (PL_scopestack); 643 Safefree (PL_scopestack);
476 Safefree (PL_savestack); 644 Safefree (PL_savestack);
477#if !PERL_VERSION_ATLEAST (5,9,0) 645#if !PERL_VERSION_ATLEAST (5,10,0)
478 Safefree (PL_retstack); 646 Safefree (PL_retstack);
479#endif 647#endif
480} 648}
481 649
650static size_t
651coro_rss (pTHX_ struct coro *coro)
652{
653 size_t rss = sizeof (*coro);
654
655 if (coro->mainstack)
656 {
657 perl_slots tmp_slot;
658 perl_slots *slot;
659
660 if (coro->flags & CF_RUNNING)
661 {
662 slot = &tmp_slot;
663
664 #define VAR(name,type) slot->name = PL_ ## name;
665 # include "state.h"
666 #undef VAR
667 }
668 else
669 slot = coro->slot;
670
671 if (slot)
672 {
673 rss += sizeof (slot->curstackinfo);
674 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
675 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
676 rss += slot->tmps_max * sizeof (SV *);
677 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
678 rss += slot->scopestack_max * sizeof (I32);
679 rss += slot->savestack_max * sizeof (ANY);
680
681#if !PERL_VERSION_ATLEAST (5,10,0)
682 rss += slot->retstack_max * sizeof (OP *);
683#endif
684 }
685 }
686
687 return rss;
688}
689
690/** coroutine stack handling ************************************************/
691
692static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
693static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
694static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
695
696/* apparently < 5.8.8 */
697#ifndef MgPV_nolen_const
698#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
699 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
700 (const char*)(mg)->mg_ptr)
701#endif
702
703/*
704 * This overrides the default magic get method of %SIG elements.
705 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
706 * and instead of tryign to save and restore the hash elements, we just provide
707 * readback here.
708 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
709 * not expecting this to actually change the hook. This is a potential problem
710 * when a schedule happens then, but we ignore this.
711 */
712static int
713coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
714{
715 const char *s = MgPV_nolen_const (mg);
716
717 if (*s == '_')
718 {
719 SV **svp = 0;
720
721 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
722 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
723
724 if (svp)
725 {
726 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
727 return 0;
728 }
729 }
730
731 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
732}
733
734static int
735coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
736{
737 const char *s = MgPV_nolen_const (mg);
738
739 if (*s == '_')
740 {
741 SV **svp = 0;
742
743 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
744 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
745
746 if (svp)
747 {
748 SV *old = *svp;
749 *svp = 0;
750 SvREFCNT_dec (old);
751 return 0;
752 }
753 }
754
755 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
756}
757
758static int
759coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
760{
761 const char *s = MgPV_nolen_const (mg);
762
763 if (*s == '_')
764 {
765 SV **svp = 0;
766
767 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
768 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
769
770 if (svp)
771 {
772 SV *old = *svp;
773 *svp = newSVsv (sv);
774 SvREFCNT_dec (old);
775 return 0;
776 }
777 }
778
779 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
780}
781
482static void 782static void
483setup_coro (struct coro *coro) 783coro_setup (pTHX_ struct coro *coro)
484{ 784{
485 /* 785 /*
486 * emulate part of the perl startup here. 786 * emulate part of the perl startup here.
487 */ 787 */
488
489 coro_init_stacks (); 788 coro_init_stacks (aTHX);
490 789
790 PL_runops = RUNOPS_DEFAULT;
491 PL_curcop = &PL_compiling; 791 PL_curcop = &PL_compiling;
492 PL_in_eval = EVAL_NULL; 792 PL_in_eval = EVAL_NULL;
793 PL_comppad = 0;
493 PL_curpm = 0; 794 PL_curpm = 0;
795 PL_curpad = 0;
494 PL_localizing = 0; 796 PL_localizing = 0;
495 PL_dirty = 0; 797 PL_dirty = 0;
496 PL_restartop = 0; 798 PL_restartop = 0;
799#if PERL_VERSION_ATLEAST (5,10,0)
800 PL_parser = 0;
801#endif
802
803 /* recreate the die/warn hooks */
804 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
805 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
806
807 GvSV (PL_defgv) = newSV (0);
808 GvAV (PL_defgv) = coro->args; coro->args = 0;
809 GvSV (PL_errgv) = newSV (0);
810 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
811 PL_rs = newSVsv (GvSV (irsgv));
812 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
497 813
498 { 814 {
499 dSP; 815 dSP;
500 LOGOP myop; 816 LOGOP myop;
501 817
502 /* I have no idea why this is needed, but it is */
503 PUSHMARK (SP);
504
505 SvREFCNT_dec (GvAV (PL_defgv));
506 GvAV (PL_defgv) = coro->args; coro->args = 0;
507
508 Zero (&myop, 1, LOGOP); 818 Zero (&myop, 1, LOGOP);
509 myop.op_next = Nullop; 819 myop.op_next = Nullop;
510 myop.op_flags = OPf_WANT_VOID; 820 myop.op_flags = OPf_WANT_VOID;
511 821
822 PUSHMARK (SP);
823 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
824 PUTBACK;
512 PL_op = (OP *)&myop; 825 PL_op = (OP *)&myop;
513
514 PUSHMARK (SP);
515 XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
516 PUTBACK;
517 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 826 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
518 SPAGAIN; 827 SPAGAIN;
519 } 828 }
520 829
521 ENTER; /* necessary e.g. for dounwind */ 830 /* this newly created coroutine might be run on an existing cctx which most
831 * likely was suspended in set_stacklevel, called from entersub.
832 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
833 * so we ENTER here for symmetry
834 */
835 ENTER;
522} 836}
523 837
524static void 838static void
839coro_destroy (pTHX_ struct coro *coro)
840{
841 if (!IN_DESTRUCT)
842 {
843 /* restore all saved variables and stuff */
844 LEAVE_SCOPE (0);
845 assert (PL_tmps_floor == -1);
846
847 /* free all temporaries */
848 FREETMPS;
849 assert (PL_tmps_ix == -1);
850
851 /* unwind all extra stacks */
852 POPSTACK_TO (PL_mainstack);
853
854 /* unwind main stack */
855 dounwind (-1);
856 }
857
858 SvREFCNT_dec (GvSV (PL_defgv));
859 SvREFCNT_dec (GvAV (PL_defgv));
860 SvREFCNT_dec (GvSV (PL_errgv));
861 SvREFCNT_dec (PL_defoutgv);
862 SvREFCNT_dec (PL_rs);
863 SvREFCNT_dec (GvSV (irsgv));
864
865 SvREFCNT_dec (PL_diehook);
866 SvREFCNT_dec (PL_warnhook);
867
868 SvREFCNT_dec (coro->saved_deffh);
869 SvREFCNT_dec (coro->throw);
870
871 coro_destroy_stacks (aTHX);
872}
873
874static void
525free_coro_mortal () 875free_coro_mortal (pTHX)
526{ 876{
527 if (coro_mortal) 877 if (expect_true (coro_mortal))
528 { 878 {
529 SvREFCNT_dec (coro_mortal); 879 SvREFCNT_dec (coro_mortal);
530 coro_mortal = 0; 880 coro_mortal = 0;
531 } 881 }
532} 882}
533 883
884static int
885runops_trace (pTHX)
886{
887 COP *oldcop = 0;
888 int oldcxix = -2;
889 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
890 coro_cctx *cctx = coro->cctx;
891
892 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
893 {
894 PERL_ASYNC_CHECK ();
895
896 if (cctx->flags & CC_TRACE_ALL)
897 {
898 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
899 {
900 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
901 SV **bot, **top;
902 AV *av = newAV (); /* return values */
903 SV **cb;
904 dSP;
905
906 GV *gv = CvGV (cx->blk_sub.cv);
907 SV *fullname = sv_2mortal (newSV (0));
908 if (isGV (gv))
909 gv_efullname3 (fullname, gv, 0);
910
911 bot = PL_stack_base + cx->blk_oldsp + 1;
912 top = cx->blk_gimme == G_ARRAY ? SP + 1
913 : cx->blk_gimme == G_SCALAR ? bot + 1
914 : bot;
915
916 av_extend (av, top - bot);
917 while (bot < top)
918 av_push (av, SvREFCNT_inc (*bot++));
919
920 PL_runops = RUNOPS_DEFAULT;
921 ENTER;
922 SAVETMPS;
923 EXTEND (SP, 3);
924 PUSHMARK (SP);
925 PUSHs (&PL_sv_no);
926 PUSHs (fullname);
927 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
928 PUTBACK;
929 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
930 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
931 SPAGAIN;
932 FREETMPS;
933 LEAVE;
934 PL_runops = runops_trace;
935 }
936
937 if (oldcop != PL_curcop)
938 {
939 oldcop = PL_curcop;
940
941 if (PL_curcop != &PL_compiling)
942 {
943 SV **cb;
944
945 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
946 {
947 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
948
949 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
950 {
951 runops_proc_t old_runops = PL_runops;
952 dSP;
953 GV *gv = CvGV (cx->blk_sub.cv);
954 SV *fullname = sv_2mortal (newSV (0));
955
956 if (isGV (gv))
957 gv_efullname3 (fullname, gv, 0);
958
959 PL_runops = RUNOPS_DEFAULT;
960 ENTER;
961 SAVETMPS;
962 EXTEND (SP, 3);
963 PUSHMARK (SP);
964 PUSHs (&PL_sv_yes);
965 PUSHs (fullname);
966 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
967 PUTBACK;
968 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
969 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
970 SPAGAIN;
971 FREETMPS;
972 LEAVE;
973 PL_runops = runops_trace;
974 }
975
976 oldcxix = cxstack_ix;
977 }
978
979 if (cctx->flags & CC_TRACE_LINE)
980 {
981 dSP;
982
983 PL_runops = RUNOPS_DEFAULT;
984 ENTER;
985 SAVETMPS;
986 EXTEND (SP, 3);
987 PL_runops = RUNOPS_DEFAULT;
988 PUSHMARK (SP);
989 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
990 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
991 PUTBACK;
992 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
993 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
994 SPAGAIN;
995 FREETMPS;
996 LEAVE;
997 PL_runops = runops_trace;
998 }
999 }
1000 }
1001 }
1002 }
1003
1004 TAINT_NOT;
1005 return 0;
1006}
1007
1008/* inject a fake call to Coro::State::_cctx_init into the execution */
1009/* _cctx_init should be careful, as it could be called at almost any time */
1010/* during execution of a perl program */
534static void NOINLINE 1011static void NOINLINE
535prepare_cctx (coro_cctx *cctx) 1012cctx_prepare (pTHX_ coro_cctx *cctx)
536{ 1013{
537 dSP; 1014 dSP;
538 LOGOP myop; 1015 LOGOP myop;
539 1016
1017 PL_top_env = &PL_start_env;
1018
1019 if (cctx->flags & CC_TRACE)
1020 PL_runops = runops_trace;
1021
540 Zero (&myop, 1, LOGOP); 1022 Zero (&myop, 1, LOGOP);
541 myop.op_next = PL_op; 1023 myop.op_next = PL_op;
542 myop.op_flags = OPf_WANT_VOID; 1024 myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
543
544 sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
545 1025
546 PUSHMARK (SP); 1026 PUSHMARK (SP);
1027 EXTEND (SP, 2);
1028 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
547 XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1029 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
548 PUTBACK; 1030 PUTBACK;
1031 PL_op = (OP *)&myop;
549 PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); 1032 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
550 SPAGAIN; 1033 SPAGAIN;
551} 1034}
552 1035
1036/*
1037 * this is a _very_ stripped down perl interpreter ;)
1038 */
553static void 1039static void
554coro_run (void *arg) 1040cctx_run (void *arg)
555{ 1041{
1042 dTHX;
1043
556 /* coro_run is the alternative epilogue of transfer() */ 1044 /* cctx_run is the alternative tail of transfer(), so unlock here. */
557 UNLOCK; 1045 UNLOCK;
558 1046
1047 /* we now skip the entersub that lead to transfer() */
1048 PL_op = PL_op->op_next;
1049
1050 /* inject a fake subroutine call to cctx_init */
1051 cctx_prepare (aTHX_ (coro_cctx *)arg);
1052
1053 /* somebody or something will hit me for both perl_run and PL_restartop */
1054 PL_restartop = PL_op;
1055 perl_run (PL_curinterp);
1056
559 /* 1057 /*
560 * this is a _very_ stripped down perl interpreter ;) 1058 * If perl-run returns we assume exit() was being called or the coro
1059 * fell off the end, which seems to be the only valid (non-bug)
1060 * reason for perl_run to return. We try to exit by jumping to the
1061 * bootstrap-time "top" top_env, as we cannot restore the "main"
1062 * coroutine as Coro has no such concept
561 */ 1063 */
562 PL_top_env = &PL_start_env; 1064 PL_top_env = main_top_env;
563 1065 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
564 /* inject call to cctx_init */
565 prepare_cctx ((coro_cctx *)arg);
566
567 /* somebody will hit me for both perl_run and PL_restartop */
568 perl_run (PL_curinterp);
569
570 fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
571 abort ();
572} 1066}
573 1067
574static coro_cctx * 1068static coro_cctx *
575cctx_new () 1069cctx_new ()
576{ 1070{
577 coro_cctx *cctx; 1071 coro_cctx *cctx;
1072 void *stack_start;
1073 size_t stack_size;
578 1074
579 ++cctx_count; 1075 ++cctx_count;
580 1076
581 New (0, cctx, 1, coro_cctx); 1077 Newz (0, cctx, 1, coro_cctx);
582 1078
583#if HAVE_MMAP 1079#if HAVE_MMAP
584
585 cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; 1080 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
586 /* mmap suppsedly does allocate-on-write for us */ 1081 /* mmap supposedly does allocate-on-write for us */
587 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1082 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
588 1083
589 if (cctx->sptr == (void *)-1) 1084 if (cctx->sptr != (void *)-1)
590 {
591 perror ("FATAL: unable to mmap stack for coroutine");
592 _exit (EXIT_FAILURE);
593 } 1085 {
594
595# if STACKGUARD 1086# if CORO_STACKGUARD
596 mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); 1087 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
597# endif 1088# endif
1089 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
1090 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1091 cctx->flags |= CC_MAPPED;
1092 }
1093 else
1094#endif
1095 {
1096 cctx->ssize = coro_stacksize * (long)sizeof (long);
1097 New (0, cctx->sptr, coro_stacksize, long);
598 1098
599#else
600
601 cctx->ssize = STACKSIZE * (long)sizeof (long);
602 New (0, cctx->sptr, STACKSIZE, long);
603
604 if (!cctx->sptr) 1099 if (!cctx->sptr)
605 { 1100 {
606 perror ("FATAL: unable to malloc stack for coroutine"); 1101 perror ("FATAL: unable to allocate stack for coroutine");
607 _exit (EXIT_FAILURE); 1102 _exit (EXIT_FAILURE);
608 } 1103 }
609 1104
610#endif 1105 stack_start = cctx->sptr;
1106 stack_size = cctx->ssize;
1107 }
611 1108
612#if USE_VALGRIND 1109 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
613 cctx->valgrind_id = VALGRIND_STACK_REGISTER ( 1110 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
614 STACKGUARD * PAGESIZE + (char *)cctx->sptr,
615 cctx->ssize + (char *)cctx->sptr
616 );
617#endif
618
619 coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
620 1111
621 return cctx; 1112 return cctx;
622} 1113}
623 1114
624static void 1115static void
… …
627 if (!cctx) 1118 if (!cctx)
628 return; 1119 return;
629 1120
630 --cctx_count; 1121 --cctx_count;
631 1122
632#if USE_VALGRIND 1123#if CORO_USE_VALGRIND
633 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1124 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
634#endif 1125#endif
635 1126
636#if HAVE_MMAP 1127#if HAVE_MMAP
1128 if (cctx->flags & CC_MAPPED)
637 munmap (cctx->sptr, cctx->ssize); 1129 munmap (cctx->sptr, cctx->ssize);
638#else 1130 else
1131#endif
639 Safefree (cctx->sptr); 1132 Safefree (cctx->sptr);
640#endif
641 1133
642 Safefree (cctx); 1134 Safefree (cctx);
643} 1135}
644 1136
1137/* wether this cctx should be destructed */
1138#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
1139
645static coro_cctx * 1140static coro_cctx *
646cctx_get () 1141cctx_get (pTHX)
647{ 1142{
648 coro_cctx *cctx; 1143 while (expect_true (cctx_first))
649
650 if (cctx_first)
651 { 1144 {
652 cctx = cctx_first; 1145 coro_cctx *cctx = cctx_first;
653 cctx_first = cctx->next; 1146 cctx_first = cctx->next;
654 --cctx_idle; 1147 --cctx_idle;
655 } 1148
656 else 1149 if (expect_true (!CCTX_EXPIRED (cctx)))
657 { 1150 return cctx;
658 cctx = cctx_new (); 1151
659 PL_op = PL_op->op_next; 1152 cctx_destroy (cctx);
660 } 1153 }
661 1154
662 return cctx; 1155 return cctx_new ();
663} 1156}
664 1157
665static void 1158static void
666cctx_put (coro_cctx *cctx) 1159cctx_put (coro_cctx *cctx)
667{ 1160{
668 /* free another cctx if overlimit */ 1161 /* free another cctx if overlimit */
669 if (cctx_idle >= MAX_IDLE_CCTX) 1162 if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
670 { 1163 {
671 coro_cctx *first = cctx_first; 1164 coro_cctx *first = cctx_first;
672 cctx_first = first->next; 1165 cctx_first = first->next;
673 --cctx_idle; 1166 --cctx_idle;
674 1167
675 assert (!first->inuse);
676 cctx_destroy (first); 1168 cctx_destroy (first);
677 } 1169 }
678 1170
679 ++cctx_idle; 1171 ++cctx_idle;
680 cctx->next = cctx_first; 1172 cctx->next = cctx_first;
681 cctx_first = cctx; 1173 cctx_first = cctx;
682} 1174}
683 1175
684/* never call directly, always through the coro_state_transfer global variable */ 1176/** coroutine switching *****************************************************/
1177
1178static void
1179transfer_check (pTHX_ struct coro *prev, struct coro *next)
1180{
1181 if (expect_true (prev != next))
1182 {
1183 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1184 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
1185
1186 if (expect_false (next->flags & CF_RUNNING))
1187 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1188
1189 if (expect_false (next->flags & CF_DESTROYED))
1190 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1191
1192#if !PERL_VERSION_ATLEAST (5,10,0)
1193 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1194 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
1195#endif
1196 }
1197}
1198
1199/* always use the TRANSFER macro */
685static void NOINLINE 1200static void NOINLINE
686transfer (struct coro *prev, struct coro *next, int flags) 1201transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
687{ 1202{
688 dSTACKLEVEL; 1203 dSTACKLEVEL;
1204 static volatile int has_throw;
689 1205
690 /* sometimes transfer is only called to set idle_sp */ 1206 /* sometimes transfer is only called to set idle_sp */
691 if (flags == TRANSFER_SET_STACKLEVEL) 1207 if (expect_false (!next))
1208 {
692 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1209 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1210 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1211 }
693 else if (prev != next) 1212 else if (expect_true (prev != next))
694 { 1213 {
695 coro_cctx *prev__cctx; 1214 coro_cctx *prev__cctx;
696 1215
697 if (prev->flags & CF_NEW) 1216 if (expect_false (prev->flags & CF_NEW))
698 { 1217 {
699 /* create a new empty context */ 1218 /* create a new empty context */
700 Newz (0, prev->cctx, 1, coro_cctx); 1219 Newz (0, prev->cctx, 1, coro_cctx);
701 prev->cctx->inuse = 1;
702 prev->flags &= ~CF_NEW; 1220 prev->flags &= ~CF_NEW;
703 prev->flags |= CF_RUNNING; 1221 prev->flags |= CF_RUNNING;
704 } 1222 }
705 1223
706 /*TODO: must not croak here */
707 if (!prev->flags & CF_RUNNING)
708 croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
709
710 if (next->flags & CF_RUNNING)
711 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
712
713 prev->flags &= ~CF_RUNNING; 1224 prev->flags &= ~CF_RUNNING;
714 next->flags |= CF_RUNNING; 1225 next->flags |= CF_RUNNING;
715 1226
716 LOCK; 1227 LOCK;
717 1228
1229 /* first get rid of the old state */
1230 save_perl (aTHX_ prev);
1231
718 if (next->flags & CF_NEW) 1232 if (expect_false (next->flags & CF_NEW))
719 { 1233 {
720 /* need to start coroutine */ 1234 /* need to start coroutine */
721 next->flags &= ~CF_NEW; 1235 next->flags &= ~CF_NEW;
722 /* first get rid of the old state */
723 SAVE (prev, -1);
724 /* setup coroutine call */ 1236 /* setup coroutine call */
725 setup_coro (next); 1237 coro_setup (aTHX_ next);
726 /* need a new stack */
727 assert (!next->stack);
728 } 1238 }
729 else 1239 else
730 { 1240 load_perl (aTHX_ next);
731 /* coroutine already started */
732 SAVE (prev, flags);
733 LOAD (next);
734 }
735 1241
736 prev__cctx = prev->cctx; 1242 prev__cctx = prev->cctx;
737 1243
738 /* possibly "free" the cctx */ 1244 /* possibly "free" the cctx */
1245 if (expect_true (
739 if (prev__cctx->idle_sp == STACKLEVEL && 0) 1246 prev__cctx->idle_sp == STACKLEVEL
1247 && !(prev__cctx->flags & CC_TRACE)
1248 && !force_cctx
1249 ))
740 { 1250 {
741 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1251 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
742 assert (PL_top_env == prev__cctx->top_env); 1252 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
743 1253
744 prev->cctx = 0; 1254 prev->cctx = 0;
745 1255
1256 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1257 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1258 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1259 if (!next->cctx)
1260 next->cctx = cctx_get (aTHX);
1261
746 cctx_put (prev__cctx); 1262 cctx_put (prev__cctx);
747 prev__cctx->inuse = 0;
748 } 1263 }
749 1264
1265 ++next->usecount;
1266
750 if (!next->cctx) 1267 if (expect_true (!next->cctx))
751 {
752 next->cctx = cctx_get (); 1268 next->cctx = cctx_get (aTHX);
753 assert (!next->cctx->inuse);
754 next->cctx->inuse = 1;
755 }
756 1269
1270 has_throw = !!next->throw;
1271
757 if (prev__cctx != next->cctx) 1272 if (expect_false (prev__cctx != next->cctx))
758 { 1273 {
759 prev__cctx->top_env = PL_top_env; 1274 prev__cctx->top_env = PL_top_env;
760 PL_top_env = next->cctx->top_env; 1275 PL_top_env = next->cctx->top_env;
761 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1276 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
762 } 1277 }
763 1278
764 free_coro_mortal (); 1279 free_coro_mortal (aTHX);
765
766 UNLOCK; 1280 UNLOCK;
1281
1282 if (expect_false (has_throw))
1283 {
1284 struct coro *coro = SvSTATE (coro_current);
1285
1286 if (coro->throw)
1287 {
1288 SV *exception = coro->throw;
1289 coro->throw = 0;
1290 sv_setsv (ERRSV, exception);
1291 croak (0);
1292 }
1293 }
767 } 1294 }
768} 1295}
769 1296
770struct transfer_args 1297struct transfer_args
771{ 1298{
772 struct coro *prev, *next; 1299 struct coro *prev, *next;
773 int flags;
774}; 1300};
775 1301
1302#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
776#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) 1303#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
777 1304
1305/** high level stuff ********************************************************/
1306
778static void 1307static int
779coro_state_destroy (struct coro *coro) 1308coro_state_destroy (pTHX_ struct coro *coro)
780{ 1309{
781 if (coro->refcnt--) 1310 if (coro->flags & CF_DESTROYED)
782 return; 1311 return 0;
1312
1313 coro->flags |= CF_DESTROYED;
1314
1315 if (coro->flags & CF_READY)
1316 {
1317 /* reduce nready, as destroying a ready coro effectively unreadies it */
1318 /* alternative: look through all ready queues and remove the coro */
1319 LOCK;
1320 --coro_nready;
1321 UNLOCK;
1322 }
1323 else
1324 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
783 1325
784 if (coro->mainstack && coro->mainstack != main_mainstack) 1326 if (coro->mainstack && coro->mainstack != main_mainstack)
785 { 1327 {
786 struct coro temp; 1328 struct coro temp;
787 1329
788 if (coro->flags & CF_RUNNING) 1330 if (coro->flags & CF_RUNNING)
789 croak ("FATAL: tried to destroy currently running coroutine"); 1331 croak ("FATAL: tried to destroy currently running coroutine");
790 1332
791 SAVE ((&temp), TRANSFER_SAVE_ALL); 1333 save_perl (aTHX_ &temp);
792 LOAD (coro); 1334 load_perl (aTHX_ coro);
793 1335
794 coro_destroy_stacks (); 1336 coro_destroy (aTHX_ coro);
795 1337
796 LOAD ((&temp)); /* this will get rid of defsv etc.. */ 1338 load_perl (aTHX_ &temp);
797 1339
798 coro->mainstack = 0; 1340 coro->slot = 0;
799 } 1341 }
800 1342
801 cctx_destroy (coro->cctx); 1343 cctx_destroy (coro->cctx);
802 SvREFCNT_dec (coro->args); 1344 SvREFCNT_dec (coro->args);
803 Safefree (coro); 1345
1346 if (coro->next) coro->next->prev = coro->prev;
1347 if (coro->prev) coro->prev->next = coro->next;
1348 if (coro == coro_first) coro_first = coro->next;
1349
1350 return 1;
804} 1351}
805 1352
806static int 1353static int
807coro_state_clear (pTHX_ SV *sv, MAGIC *mg) 1354coro_state_free (pTHX_ SV *sv, MAGIC *mg)
808{ 1355{
809 struct coro *coro = (struct coro *)mg->mg_ptr; 1356 struct coro *coro = (struct coro *)mg->mg_ptr;
810 mg->mg_ptr = 0; 1357 mg->mg_ptr = 0;
811 1358
1359 coro->hv = 0;
1360
1361 if (--coro->refcnt < 0)
1362 {
812 coro_state_destroy (coro); 1363 coro_state_destroy (aTHX_ coro);
1364 Safefree (coro);
1365 }
813 1366
814 return 0; 1367 return 0;
815} 1368}
816 1369
817static int 1370static int
… …
824 return 0; 1377 return 0;
825} 1378}
826 1379
827static MGVTBL coro_state_vtbl = { 1380static MGVTBL coro_state_vtbl = {
828 0, 0, 0, 0, 1381 0, 0, 0, 0,
829 coro_state_clear, 1382 coro_state_free,
830 0, 1383 0,
831#ifdef MGf_DUP 1384#ifdef MGf_DUP
832 coro_state_dup, 1385 coro_state_dup,
833#else 1386#else
834# define MGf_DUP 0 1387# define MGf_DUP 0
835#endif 1388#endif
836}; 1389};
837 1390
838static struct coro *
839SvSTATE (SV *coro)
840{
841 HV *stash;
842 MAGIC *mg;
843
844 if (SvROK (coro))
845 coro = SvRV (coro);
846
847 stash = SvSTASH (coro);
848 if (stash != coro_stash && stash != coro_state_stash)
849 {
850 /* very slow, but rare, check */
851 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
852 croak ("Coro::State object required");
853 }
854
855 mg = SvMAGIC (coro);
856 assert (mg->mg_type == PERL_MAGIC_ext);
857 return (struct coro *)mg->mg_ptr;
858}
859
860static void 1391static void
861prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) 1392prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
862{ 1393{
863 ta->prev = SvSTATE (prev); 1394 ta->prev = SvSTATE (prev_sv);
864 ta->next = SvSTATE (next); 1395 ta->next = SvSTATE (next_sv);
865 ta->flags = flags; 1396 TRANSFER_CHECK (*ta);
866} 1397}
867 1398
868static void 1399static void
869api_transfer (SV *prev, SV *next, int flags) 1400api_transfer (SV *prev_sv, SV *next_sv)
870{ 1401{
1402 dTHX;
871 struct transfer_args ta; 1403 struct transfer_args ta;
872 1404
873 prepare_transfer (&ta, prev, next, flags); 1405 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
874 TRANSFER (ta); 1406 TRANSFER (ta, 1);
875} 1407}
876 1408
877/** Coro ********************************************************************/ 1409/** Coro ********************************************************************/
878 1410
879#define PRIO_MAX 3
880#define PRIO_HIGH 1
881#define PRIO_NORMAL 0
882#define PRIO_LOW -1
883#define PRIO_IDLE -3
884#define PRIO_MIN -4
885
886/* for Coro.pm */
887static SV *coro_current;
888static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
889static int coro_nready;
890
891static void 1411static void
892coro_enq (SV *coro_sv) 1412coro_enq (pTHX_ SV *coro_sv)
893{ 1413{
894 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1414 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
895 coro_nready++;
896} 1415}
897 1416
898static SV * 1417static SV *
899coro_deq (int min_prio) 1418coro_deq (pTHX)
900{ 1419{
901 int prio = PRIO_MAX - PRIO_MIN; 1420 int prio;
902 1421
903 min_prio -= PRIO_MIN;
904 if (min_prio < 0)
905 min_prio = 0;
906
907 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 1422 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
908 if (AvFILLp (coro_ready [prio]) >= 0) 1423 if (AvFILLp (coro_ready [prio]) >= 0)
909 {
910 coro_nready--;
911 return av_shift (coro_ready [prio]); 1424 return av_shift (coro_ready [prio]);
912 }
913 1425
914 return 0; 1426 return 0;
915} 1427}
916 1428
917static int 1429static int
918api_ready (SV *coro_sv) 1430api_ready (SV *coro_sv)
919{ 1431{
1432 dTHX;
920 struct coro *coro; 1433 struct coro *coro;
1434 SV *sv_hook;
1435 void (*xs_hook)(void);
921 1436
922 if (SvROK (coro_sv)) 1437 if (SvROK (coro_sv))
923 coro_sv = SvRV (coro_sv); 1438 coro_sv = SvRV (coro_sv);
924 1439
925 coro = SvSTATE (coro_sv); 1440 coro = SvSTATE (coro_sv);
926 1441
927 if (coro->flags & CF_READY) 1442 if (coro->flags & CF_READY)
928 return 0; 1443 return 0;
929 1444
930#if 0 /* this is actually harmless */
931 if (coro->flags & CF_RUNNING)
932 croak ("Coro::ready called on currently running coroutine");
933#endif
934
935 coro->flags |= CF_READY; 1445 coro->flags |= CF_READY;
936 1446
937 LOCK; 1447 LOCK;
1448
1449 sv_hook = coro_nready ? 0 : coro_readyhook;
1450 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1451
938 coro_enq (SvREFCNT_inc (coro_sv)); 1452 coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1453 ++coro_nready;
1454
939 UNLOCK; 1455 UNLOCK;
1456
1457 if (sv_hook)
1458 {
1459 dSP;
1460
1461 ENTER;
1462 SAVETMPS;
1463
1464 PUSHMARK (SP);
1465 PUTBACK;
1466 call_sv (sv_hook, G_DISCARD);
1467 SPAGAIN;
1468
1469 FREETMPS;
1470 LEAVE;
1471 }
1472
1473 if (xs_hook)
1474 xs_hook ();
940 1475
941 return 1; 1476 return 1;
942} 1477}
943 1478
944static int 1479static int
945api_is_ready (SV *coro_sv) 1480api_is_ready (SV *coro_sv)
946{ 1481{
1482 dTHX;
947 return !!SvSTATE (coro_sv)->flags & CF_READY; 1483 return !!(SvSTATE (coro_sv)->flags & CF_READY);
948} 1484}
949 1485
950static void 1486static void
951prepare_schedule (struct transfer_args *ta) 1487prepare_schedule (pTHX_ struct transfer_args *ta)
952{ 1488{
953 SV *prev, *next; 1489 SV *prev_sv, *next_sv;
954 1490
955 for (;;) 1491 for (;;)
956 { 1492 {
957 LOCK; 1493 LOCK;
958 next = coro_deq (PRIO_MIN); 1494 next_sv = coro_deq (aTHX);
1495
1496 /* nothing to schedule: call the idle handler */
1497 if (expect_false (!next_sv))
1498 {
1499 dSP;
1500 UNLOCK;
1501
1502 ENTER;
1503 SAVETMPS;
1504
1505 PUSHMARK (SP);
1506 PUTBACK;
1507 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1508 SPAGAIN;
1509
1510 FREETMPS;
1511 LEAVE;
1512 continue;
1513 }
1514
1515 ta->next = SvSTATE (next_sv);
1516
1517 /* cannot transfer to destroyed coros, skip and look for next */
1518 if (expect_false (ta->next->flags & CF_DESTROYED))
1519 {
1520 UNLOCK;
1521 SvREFCNT_dec (next_sv);
1522 /* coro_nready is already taken care of by destroy */
1523 continue;
1524 }
1525
1526 --coro_nready;
959 UNLOCK; 1527 UNLOCK;
960
961 if (next)
962 break; 1528 break;
963
964 {
965 dSP;
966
967 ENTER;
968 SAVETMPS;
969
970 PUSHMARK (SP);
971 PUTBACK;
972 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
973
974 FREETMPS;
975 LEAVE;
976 } 1529 }
977 }
978
979 prev = SvRV (coro_current);
980 SvRV_set (coro_current, next);
981 1530
982 /* free this only after the transfer */ 1531 /* free this only after the transfer */
1532 prev_sv = SvRV (coro_current);
1533 ta->prev = SvSTATE (prev_sv);
1534 TRANSFER_CHECK (*ta);
1535 assert (ta->next->flags & CF_READY);
1536 ta->next->flags &= ~CF_READY;
1537 SvRV_set (coro_current, next_sv);
1538
983 LOCK; 1539 LOCK;
984 free_coro_mortal (); 1540 free_coro_mortal (aTHX);
1541 coro_mortal = prev_sv;
985 UNLOCK; 1542 UNLOCK;
986 coro_mortal = prev;
987
988 assert (!SvROK(prev));//D
989 assert (!SvROK(next));//D
990
991 ta->prev = SvSTATE (prev);
992 ta->next = SvSTATE (next);
993 ta->flags = TRANSFER_SAVE_ALL;
994
995 assert (ta->flags & CF_READY);
996 ta->next->flags &= ~CF_READY;
997} 1543}
998 1544
999static void 1545static void
1000prepare_cede (struct transfer_args *ta) 1546prepare_cede (pTHX_ struct transfer_args *ta)
1001{ 1547{
1002 api_ready (coro_current); 1548 api_ready (coro_current);
1003
1004 prepare_schedule (ta); 1549 prepare_schedule (aTHX_ ta);
1550}
1551
1552static int
1553prepare_cede_notself (pTHX_ struct transfer_args *ta)
1554{
1555 if (coro_nready)
1556 {
1557 SV *prev = SvRV (coro_current);
1558 prepare_schedule (aTHX_ ta);
1559 api_ready (prev);
1560 return 1;
1561 }
1562 else
1563 return 0;
1005} 1564}
1006 1565
1007static void 1566static void
1008api_schedule (void) 1567api_schedule (void)
1009{ 1568{
1569 dTHX;
1010 struct transfer_args ta; 1570 struct transfer_args ta;
1011 1571
1012 prepare_schedule (&ta); 1572 prepare_schedule (aTHX_ &ta);
1013 TRANSFER (ta); 1573 TRANSFER (ta, 1);
1574}
1575
1576static int
1577api_cede (void)
1578{
1579 dTHX;
1580 struct transfer_args ta;
1581
1582 prepare_cede (aTHX_ &ta);
1583
1584 if (expect_true (ta.prev != ta.next))
1585 {
1586 TRANSFER (ta, 1);
1587 return 1;
1588 }
1589 else
1590 return 0;
1591}
1592
1593static int
1594api_cede_notself (void)
1595{
1596 dTHX;
1597 struct transfer_args ta;
1598
1599 if (prepare_cede_notself (aTHX_ &ta))
1600 {
1601 TRANSFER (ta, 1);
1602 return 1;
1603 }
1604 else
1605 return 0;
1014} 1606}
1015 1607
1016static void 1608static void
1017api_cede (void) 1609api_trace (SV *coro_sv, int flags)
1018{ 1610{
1019 struct transfer_args ta; 1611 dTHX;
1612 struct coro *coro = SvSTATE (coro_sv);
1020 1613
1021 prepare_cede (&ta); 1614 if (flags & CC_TRACE)
1022 TRANSFER (ta); 1615 {
1023} 1616 if (!coro->cctx)
1617 coro->cctx = cctx_new ();
1618 else if (!(coro->cctx->flags & CC_TRACE))
1619 croak ("cannot enable tracing on coroutine with custom stack");
1024 1620
1621 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1622 }
1623 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1624 {
1625 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1626
1627 if (coro->flags & CF_RUNNING)
1628 PL_runops = RUNOPS_DEFAULT;
1629 else
1630 coro->slot->runops = RUNOPS_DEFAULT;
1631 }
1632}
1633
1634static int
1635coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
1636{
1637 AV *padlist;
1638 AV *av = (AV *)mg->mg_obj;
1639
1640 abort ();
1641
1642 return 0;
1643}
1644
1645static MGVTBL coro_gensub_vtbl = {
1646 0, 0, 0, 0,
1647 coro_gensub_free
1648};
1649
1025MODULE = Coro::State PACKAGE = Coro::State 1650MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1026 1651
1027PROTOTYPES: DISABLE 1652PROTOTYPES: DISABLE
1028 1653
1029BOOT: 1654BOOT:
1030{ 1655{
1031#ifdef USE_ITHREADS 1656#ifdef USE_ITHREADS
1032 MUTEX_INIT (&coro_mutex); 1657 MUTEX_INIT (&coro_mutex);
1033#endif 1658#endif
1034 BOOT_PAGESIZE; 1659 BOOT_PAGESIZE;
1035 1660
1661 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1662 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1663
1664 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1665 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1666 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1667
1668 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1669 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1670 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1671
1036 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 1672 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1037 1673
1038 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 1674 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1039 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 1675 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1040 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 1676 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1677 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1041 1678
1042 main_mainstack = PL_mainstack; 1679 main_mainstack = PL_mainstack;
1680 main_top_env = PL_top_env;
1043 1681
1682 while (main_top_env->je_prev)
1683 main_top_env = main_top_env->je_prev;
1684
1044 coroapi.ver = CORO_API_VERSION; 1685 coroapi.ver = CORO_API_VERSION;
1686 coroapi.rev = CORO_API_REVISION;
1045 coroapi.transfer = api_transfer; 1687 coroapi.transfer = api_transfer;
1046 1688
1047 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 1689 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1048} 1690}
1049 1691
1050SV * 1692SV *
1051new (char *klass, ...) 1693new (char *klass, ...)
1052 CODE: 1694 CODE:
1053{ 1695{
1054 struct coro *coro; 1696 struct coro *coro;
1697 MAGIC *mg;
1055 HV *hv; 1698 HV *hv;
1056 int i; 1699 int i;
1057 1700
1058 Newz (0, coro, 1, struct coro); 1701 Newz (0, coro, 1, struct coro);
1059 coro->args = newAV (); 1702 coro->args = newAV ();
1060 coro->flags = CF_NEW; 1703 coro->flags = CF_NEW;
1061 1704
1705 if (coro_first) coro_first->prev = coro;
1706 coro->next = coro_first;
1707 coro_first = coro;
1708
1062 hv = newHV (); 1709 coro->hv = hv = newHV ();
1063 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 1710 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1711 mg->mg_flags |= MGf_DUP;
1064 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 1712 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1065 1713
1714 av_extend (coro->args, items - 1);
1066 for (i = 1; i < items; i++) 1715 for (i = 1; i < items; i++)
1067 av_push (coro->args, newSVsv (ST (i))); 1716 av_push (coro->args, newSVsv (ST (i)));
1068} 1717}
1069 OUTPUT: 1718 OUTPUT:
1070 RETVAL 1719 RETVAL
1071 1720
1721# these not obviously related functions are all rolled into the same xs
1722# function to increase chances that they all will call transfer with the same
1723# stack offset
1072void 1724void
1073_set_stacklevel (...) 1725_set_stacklevel (...)
1074 ALIAS: 1726 ALIAS:
1075 Coro::State::transfer = 1 1727 Coro::State::transfer = 1
1076 Coro::schedule = 2 1728 Coro::schedule = 2
1077 Coro::cede = 3 1729 Coro::cede = 3
1730 Coro::cede_notself = 4
1078 CODE: 1731 CODE:
1079{ 1732{
1080 struct transfer_args ta; 1733 struct transfer_args ta;
1081 1734
1735 PUTBACK;
1082 switch (ix) 1736 switch (ix)
1083 { 1737 {
1084 case 0: 1738 case 0:
1085 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); 1739 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1086 ta.next = 0; 1740 ta.next = 0;
1087 ta.flags = TRANSFER_SET_STACKLEVEL;
1088 break; 1741 break;
1089 1742
1090 case 1: 1743 case 1:
1091 if (items != 3) 1744 if (items != 2)
1092 croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items); 1745 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1093 1746
1094 prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); 1747 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1095 break; 1748 break;
1096 1749
1097 case 2: 1750 case 2:
1098 prepare_schedule (&ta); 1751 prepare_schedule (aTHX_ &ta);
1099 break; 1752 break;
1100 1753
1101 case 3: 1754 case 3:
1102 prepare_cede (&ta); 1755 prepare_cede (aTHX_ &ta);
1756 break;
1757
1758 case 4:
1759 if (!prepare_cede_notself (aTHX_ &ta))
1760 XSRETURN_EMPTY;
1761
1103 break; 1762 break;
1104 } 1763 }
1764 SPAGAIN;
1105 1765
1766 BARRIER;
1767 PUTBACK;
1106 TRANSFER (ta); 1768 TRANSFER (ta, 0);
1769 SPAGAIN; /* might be the sp of a different coroutine now */
1770 /* be extra careful not to ever do anything after TRANSFER */
1107} 1771}
1772
1773bool
1774_destroy (SV *coro_sv)
1775 CODE:
1776 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1777 OUTPUT:
1778 RETVAL
1108 1779
1109void 1780void
1110_clone_state_from (SV *dst, SV *src)
1111 CODE:
1112{
1113 struct coro *coro_src = SvSTATE (src);
1114
1115 sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1116
1117 ++coro_src->refcnt;
1118 sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1119}
1120
1121void
1122_exit (code) 1781_exit (int code)
1123 int code
1124 PROTOTYPE: $ 1782 PROTOTYPE: $
1125 CODE: 1783 CODE:
1126 _exit (code); 1784 _exit (code);
1785
1786int
1787cctx_stacksize (int new_stacksize = 0)
1788 CODE:
1789 RETVAL = coro_stacksize;
1790 if (new_stacksize)
1791 coro_stacksize = new_stacksize;
1792 OUTPUT:
1793 RETVAL
1127 1794
1128int 1795int
1129cctx_count () 1796cctx_count ()
1130 CODE: 1797 CODE:
1131 RETVAL = cctx_count; 1798 RETVAL = cctx_count;
… …
1137 CODE: 1804 CODE:
1138 RETVAL = cctx_idle; 1805 RETVAL = cctx_idle;
1139 OUTPUT: 1806 OUTPUT:
1140 RETVAL 1807 RETVAL
1141 1808
1809void
1810list ()
1811 PPCODE:
1812{
1813 struct coro *coro;
1814 for (coro = coro_first; coro; coro = coro->next)
1815 if (coro->hv)
1816 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
1817}
1818
1819void
1820call (Coro::State coro, SV *coderef)
1821 ALIAS:
1822 eval = 1
1823 CODE:
1824{
1825 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1826 {
1827 struct coro temp;
1828
1829 if (!(coro->flags & CF_RUNNING))
1830 {
1831 PUTBACK;
1832 save_perl (aTHX_ &temp);
1833 load_perl (aTHX_ coro);
1834 }
1835
1836 {
1837 dSP;
1838 ENTER;
1839 SAVETMPS;
1840 PUTBACK;
1841 PUSHSTACK;
1842 PUSHMARK (SP);
1843
1844 if (ix)
1845 eval_sv (coderef, 0);
1846 else
1847 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1848
1849 POPSTACK;
1850 SPAGAIN;
1851 FREETMPS;
1852 LEAVE;
1853 PUTBACK;
1854 }
1855
1856 if (!(coro->flags & CF_RUNNING))
1857 {
1858 save_perl (aTHX_ coro);
1859 load_perl (aTHX_ &temp);
1860 SPAGAIN;
1861 }
1862 }
1863}
1864
1865SV *
1866is_ready (Coro::State coro)
1867 PROTOTYPE: $
1868 ALIAS:
1869 is_ready = CF_READY
1870 is_running = CF_RUNNING
1871 is_new = CF_NEW
1872 is_destroyed = CF_DESTROYED
1873 CODE:
1874 RETVAL = boolSV (coro->flags & ix);
1875 OUTPUT:
1876 RETVAL
1877
1878void
1879api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1880
1881SV *
1882has_cctx (Coro::State coro)
1883 PROTOTYPE: $
1884 CODE:
1885 RETVAL = boolSV (!!coro->cctx);
1886 OUTPUT:
1887 RETVAL
1888
1889int
1890is_traced (Coro::State coro)
1891 PROTOTYPE: $
1892 CODE:
1893 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1894 OUTPUT:
1895 RETVAL
1896
1897IV
1898rss (Coro::State coro)
1899 PROTOTYPE: $
1900 ALIAS:
1901 usecount = 1
1902 CODE:
1903 switch (ix)
1904 {
1905 case 0: RETVAL = coro_rss (aTHX_ coro); break;
1906 case 1: RETVAL = coro->usecount; break;
1907 }
1908 OUTPUT:
1909 RETVAL
1910
1911void
1912force_cctx ()
1913 CODE:
1914 struct coro *coro = SvSTATE (coro_current);
1915 coro->cctx->idle_sp = 0;
1916
1917void
1918throw (Coro::State self, SV *throw = &PL_sv_undef)
1919 PROTOTYPE: $;$
1920 CODE:
1921 SvREFCNT_dec (self->throw);
1922 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1923
1924void
1925swap_defsv (Coro::State self)
1926 PROTOTYPE: $
1927 ALIAS:
1928 swap_defav = 1
1929 CODE:
1930 if (!self->slot)
1931 croak ("cannot swap state with coroutine that has no saved state");
1932 else
1933 {
1934 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1935 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1936
1937 SV *tmp = *src; *src = *dst; *dst = tmp;
1938 }
1939
1142MODULE = Coro::State PACKAGE = Coro 1940MODULE = Coro::State PACKAGE = Coro
1143 1941
1144BOOT: 1942BOOT:
1145{ 1943{
1146 int i; 1944 int i;
1147 1945
1946 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1947 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1948 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1949
1950 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1951 SvREADONLY_on (coro_current);
1952
1148 coro_stash = gv_stashpv ("Coro", TRUE); 1953 coro_stash = gv_stashpv ("Coro", TRUE);
1149 1954
1150 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 1955 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1151 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 1956 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1152 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 1957 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1153 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 1958 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1154 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 1959 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1155 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 1960 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1156 1961
1157 coro_current = get_sv ("Coro::current", FALSE);
1158 SvREADONLY_on (coro_current);
1159
1160 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 1962 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1161 coro_ready[i] = newAV (); 1963 coro_ready[i] = newAV ();
1162 1964
1163 { 1965 {
1164 SV *sv = perl_get_sv("Coro::API", 1); 1966 SV *sv = perl_get_sv ("Coro::API", TRUE);
1967 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1165 1968
1166 coroapi.schedule = api_schedule; 1969 coroapi.schedule = api_schedule;
1167 coroapi.cede = api_cede; 1970 coroapi.cede = api_cede;
1971 coroapi.cede_notself = api_cede_notself;
1168 coroapi.ready = api_ready; 1972 coroapi.ready = api_ready;
1169 coroapi.is_ready = api_is_ready; 1973 coroapi.is_ready = api_is_ready;
1170 coroapi.nready = &coro_nready; 1974 coroapi.nready = &coro_nready;
1171 coroapi.current = coro_current; 1975 coroapi.current = coro_current;
1172 1976
1173 GCoroAPI = &coroapi; 1977 GCoroAPI = &coroapi;
1174 sv_setiv (sv, (IV)&coroapi); 1978 sv_setiv (sv, (IV)&coroapi);
1175 SvREADONLY_on (sv); 1979 SvREADONLY_on (sv);
1176 } 1980 }
1177} 1981}
1982
1983void
1984_set_current (SV *current)
1985 PROTOTYPE: $
1986 CODE:
1987 SvREFCNT_dec (SvRV (coro_current));
1988 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1989
1990void
1991_set_readyhook (SV *hook)
1992 PROTOTYPE: $
1993 CODE:
1994 LOCK;
1995 SvREFCNT_dec (coro_readyhook);
1996 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1997 UNLOCK;
1178 1998
1179int 1999int
1180prio (Coro::State coro, int newprio = 0) 2000prio (Coro::State coro, int newprio = 0)
1181 ALIAS: 2001 ALIAS:
1182 nice = 1 2002 nice = 1
… …
1185 RETVAL = coro->prio; 2005 RETVAL = coro->prio;
1186 2006
1187 if (items > 1) 2007 if (items > 1)
1188 { 2008 {
1189 if (ix) 2009 if (ix)
1190 newprio += coro->prio; 2010 newprio = coro->prio - newprio;
1191 2011
1192 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 2012 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1193 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 2013 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1194 2014
1195 coro->prio = newprio; 2015 coro->prio = newprio;
1196 } 2016 }
1197} 2017}
2018 OUTPUT:
2019 RETVAL
1198 2020
1199SV * 2021SV *
1200ready (SV *self) 2022ready (SV *self)
1201 PROTOTYPE: $ 2023 PROTOTYPE: $
1202 CODE: 2024 CODE:
1203 RETVAL = boolSV (api_ready (self)); 2025 RETVAL = boolSV (api_ready (self));
1204 OUTPUT: 2026 OUTPUT:
1205 RETVAL 2027 RETVAL
1206 2028
1207SV *
1208is_ready (SV *self)
1209 PROTOTYPE: $
1210 CODE:
1211 RETVAL = boolSV (api_is_ready (self));
1212 OUTPUT:
1213 RETVAL
1214
1215int 2029int
1216nready (...) 2030nready (...)
1217 PROTOTYPE: 2031 PROTOTYPE:
1218 CODE: 2032 CODE:
1219 RETVAL = coro_nready; 2033 RETVAL = coro_nready;
1220 OUTPUT: 2034 OUTPUT:
1221 RETVAL 2035 RETVAL
1222 2036
2037# for async_pool speedup
1223void 2038void
1224_set_current (SV *current) 2039_pool_1 (SV *cb)
1225 PROTOTYPE: $
1226 CODE: 2040 CODE:
1227 SvREFCNT_dec (SvRV (coro_current)); 2041{
1228 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 2042 struct coro *coro = SvSTATE (coro_current);
2043 HV *hv = (HV *)SvRV (coro_current);
2044 AV *defav = GvAV (PL_defgv);
2045 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2046 AV *invoke_av;
2047 int i, len;
2048
2049 if (!invoke)
2050 {
2051 SV *old = PL_diehook;
2052 PL_diehook = 0;
2053 SvREFCNT_dec (old);
2054 croak ("\3async_pool terminate\2\n");
2055 }
2056
2057 SvREFCNT_dec (coro->saved_deffh);
2058 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
2059
2060 hv_store (hv, "desc", sizeof ("desc") - 1,
2061 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2062
2063 invoke_av = (AV *)SvRV (invoke);
2064 len = av_len (invoke_av);
2065
2066 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2067
2068 if (len > 0)
2069 {
2070 av_fill (defav, len - 1);
2071 for (i = 0; i < len; ++i)
2072 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
2073 }
2074
2075 SvREFCNT_dec (invoke);
2076}
2077
2078void
2079_pool_2 (SV *cb)
2080 CODE:
2081{
2082 struct coro *coro = SvSTATE (coro_current);
2083
2084 sv_setsv (cb, &PL_sv_undef);
2085
2086 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2087 coro->saved_deffh = 0;
2088
2089 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2090 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2091 {
2092 SV *old = PL_diehook;
2093 PL_diehook = 0;
2094 SvREFCNT_dec (old);
2095 croak ("\3async_pool terminate\2\n");
2096 }
2097
2098 av_clear (GvAV (PL_defgv));
2099 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2100 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2101
2102 coro->prio = 0;
2103
2104 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2105 api_trace (coro_current, 0);
2106
2107 av_push (av_async_pool, newSVsv (coro_current));
2108}
2109
2110#if 0
2111
2112void
2113_generator_call (...)
2114 PROTOTYPE: @
2115 PPCODE:
2116 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2117 xxxx
2118 abort ();
2119
2120SV *
2121gensub (SV *sub, ...)
2122 PROTOTYPE: &;@
2123 CODE:
2124{
2125 struct coro *coro;
2126 MAGIC *mg;
2127 CV *xcv;
2128 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2129 int i;
2130
2131 CvGV (ncv) = CvGV (cv);
2132 CvFILE (ncv) = CvFILE (cv);
2133
2134 Newz (0, coro, 1, struct coro);
2135 coro->args = newAV ();
2136 coro->flags = CF_NEW;
2137
2138 av_extend (coro->args, items - 1);
2139 for (i = 1; i < items; i++)
2140 av_push (coro->args, newSVsv (ST (i)));
2141
2142 CvISXSUB_on (ncv);
2143 CvXSUBANY (ncv).any_ptr = (void *)coro;
2144
2145 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2146
2147 CvXSUB (ncv) = CvXSUB (xcv);
2148 CvANON_on (ncv);
2149
2150 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2151 RETVAL = newRV_noinc ((SV *)ncv);
2152}
2153 OUTPUT:
2154 RETVAL
2155
2156#endif
2157
1229 2158
1230MODULE = Coro::State PACKAGE = Coro::AIO 2159MODULE = Coro::State PACKAGE = Coro::AIO
1231 2160
1232SV * 2161SV *
1233_get_state () 2162_get_state ()
1234 CODE: 2163 CODE:
1235{ 2164{
1236 struct { 2165 struct io_state *data;
1237 int errorno;
1238 int laststype;
1239 int laststatval;
1240 Stat_t statcache;
1241 } data;
1242 2166
2167 RETVAL = newSV (sizeof (struct io_state));
2168 data = (struct io_state *)SvPVX (RETVAL);
2169 SvCUR_set (RETVAL, sizeof (struct io_state));
2170 SvPOK_only (RETVAL);
2171
1243 data.errorno = errno; 2172 data->errorno = errno;
1244 data.laststype = PL_laststype; 2173 data->laststype = PL_laststype;
1245 data.laststatval = PL_laststatval; 2174 data->laststatval = PL_laststatval;
1246 data.statcache = PL_statcache; 2175 data->statcache = PL_statcache;
1247
1248 RETVAL = newSVpvn ((char *)&data, sizeof data);
1249} 2176}
1250 OUTPUT: 2177 OUTPUT:
1251 RETVAL 2178 RETVAL
1252 2179
1253void 2180void
1254_set_state (char *data_) 2181_set_state (char *data_)
1255 PROTOTYPE: $ 2182 PROTOTYPE: $
1256 CODE: 2183 CODE:
1257{ 2184{
1258 struct { 2185 struct io_state *data = (void *)data_;
1259 int errorno;
1260 int laststype;
1261 int laststatval;
1262 Stat_t statcache;
1263 } *data = (void *)data_;
1264 2186
1265 errno = data->errorno; 2187 errno = data->errorno;
1266 PL_laststype = data->laststype; 2188 PL_laststype = data->laststype;
1267 PL_laststatval = data->laststatval; 2189 PL_laststatval = data->laststatval;
1268 PL_statcache = data->statcache; 2190 PL_statcache = data->statcache;
1269} 2191}
2192
2193
2194MODULE = Coro::State PACKAGE = Coro::AnyEvent
2195
2196BOOT:
2197 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2198
2199SV *
2200_schedule (...)
2201 PROTOTYPE: @
2202 CODE:
2203{
2204 static int incede;
2205
2206 api_cede_notself ();
2207
2208 ++incede;
2209 while (coro_nready >= incede && api_cede ())
2210 ;
2211
2212 sv_setsv (sv_activity, &PL_sv_undef);
2213 if (coro_nready >= incede)
2214 {
2215 PUSHMARK (SP);
2216 PUTBACK;
2217 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2218 SPAGAIN;
2219 }
2220
2221 --incede;
2222}
2223

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